WO2014123139A1 - Élément de court-circuit et circuit qui utilise ce dernier - Google Patents

Élément de court-circuit et circuit qui utilise ce dernier Download PDF

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Publication number
WO2014123139A1
WO2014123139A1 PCT/JP2014/052634 JP2014052634W WO2014123139A1 WO 2014123139 A1 WO2014123139 A1 WO 2014123139A1 JP 2014052634 W JP2014052634 W JP 2014052634W WO 2014123139 A1 WO2014123139 A1 WO 2014123139A1
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WO
WIPO (PCT)
Prior art keywords
short
electrode
circuit element
switch
fuse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/052634
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English (en)
Japanese (ja)
Inventor
吉弘 米田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dexerials Corp
Original Assignee
Dexerials Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013125079A external-priority patent/JP6161967B2/ja
Priority claimed from JP2013125078A external-priority patent/JP6246503B2/ja
Priority claimed from JP2013125077A external-priority patent/JP6254777B2/ja
Application filed by Dexerials Corp filed Critical Dexerials Corp
Priority to CN201480007625.9A priority Critical patent/CN105027252B/zh
Priority to KR1020157024285A priority patent/KR102115999B1/ko
Publication of WO2014123139A1 publication Critical patent/WO2014123139A1/fr
Priority to US14/819,328 priority patent/US9953793B2/en
Priority to US14/818,862 priority patent/US9899179B2/en
Priority to US14/819,061 priority patent/US9953792B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/767—Normally open
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/103—Fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/108—Normal resistors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a short-circuit element that eliminates only abnormal parts in an electronic device using a short-circuit element provided with a heating resistor and a fuse element on a substrate, and a circuit using the same.
  • a battery pack incorporates a number of protection circuits such as overcharge protection and overdischarge protection, It has a function of shutting off the output of the battery pack in a predetermined case.
  • Some types of protection elements perform overcharge protection or overdischarge protection operation of the battery pack by turning on / off the output using an FET switch built in the battery pack.
  • FET switch When the FET switch is short-circuited for some reason, a lightning surge or the like is applied and an instantaneous large current flows, or the output voltage drops abnormally due to the life of the battery cell, or excessively abnormal Even when the voltage is output, the battery pack and the electronic device must be protected from accidents such as ignition. Therefore, in order to safely shut off the output of the battery cell in any possible abnormal state, a protection element made of a fuse element having a function of cutting off the current path by an external signal is used. .
  • a protection element of a protection circuit for such a lithium ion secondary battery or the like As a protection element of a protection circuit for such a lithium ion secondary battery or the like, as described in Patent Document 1, a first electrode on a current path, a conductor layer connected to a heating element, a second electrode Some fusible conductors are connected to form part of the current path, and the fusible conductor on the current path is melted by self-heating due to overcurrent or by a heating element provided inside the protective element. . In such a protection element, the molten liquid soluble conductor is collected on the conductor layer connected to the heating element, thereby interrupting the current path.
  • a configuration has been proposed in which a short-circuit element is connected in parallel to each of the LED elements connected in series, and when the LED is abnormal, the short-circuit element is short-circuited at a predetermined voltage to emit a normal LED.
  • Patent Document 2 a plurality of elements each having a predetermined thickness of an insulating barrier layer sandwiched between metals are connected in series.
  • HEV Hybrid Electric Vehicle
  • EV Electric Vehicle
  • a lithium ion secondary battery has been used from the viewpoint of energy density and output characteristics.
  • a high voltage and a large current are required.
  • dedicated cells that can withstand high voltages and large currents have been developed, but in many cases due to manufacturing cost problems, it is necessary to connect multiple battery cells in series and in parallel to use general-purpose cells. Secures the correct voltage and current.
  • the resistance value when 10 V is applied is as high as about 17 K ⁇ , and the resistance value is further increased in order to bypass the open LED element efficiently. Lowering is desired.
  • the present invention eliminates only abnormal battery cells in a battery pack composed of a plurality of cells, and in a protective element that can effectively use normal battery cells, a short-circuit element that can form a bypass path, and the same
  • An object of the present invention is to provide a circuit using this.
  • a short-circuit element includes an insulating substrate, a heating resistor provided on the insulating substrate, and first and second electrodes provided adjacent to each other on the insulating substrate. Between the first electrode and the third electrode, the third electrode provided on the insulating substrate adjacent to the first electrode, and electrically connected to the heating resistor. Provided with a first soluble conductor that melts the current path between the first and third electrodes by heating from the heating resistor, and the heating resistor. The first electrode and the second electrode are short-circuited by the first soluble conductor that is melted by heating from the first electrode and aggregated on the first and second electrodes. is there.
  • the short-circuit element circuit includes a fuse, a heating resistor connected to one end of the fuse, and a switch connected to the other end of the fuse to which the heating resistor is not connected.
  • the switch is short-circuited in conjunction with the fusing of the fuse.
  • the compensation circuit includes a fuse, a heating resistor connected to one end of the fuse, and a switch connected to the other end of the fuse to which the heating resistor is not connected.
  • the switch includes a short-circuit element that is short-circuited in conjunction with the fusing of the fuse and an electronic component, and the switch has both terminals connected in parallel to the electronic component, and the open terminal of the heating resistor is the The switch terminal is connected to a terminal to which the fuse is not connected, and when the electronic component is abnormal, the fuse is melted to short-circuit the switch, thereby forming a bypass current path that bypasses the electronic component. It is.
  • the compensation circuit includes a fuse, a heating resistor connected to one end of the fuse, and a switch connected to the other end of the fuse to which the heating resistor is not connected.
  • the switch is connected to a short-circuit element that is short-circuited in conjunction with the melting of the fuse, an electronic component, and a current path of the electronic component, and interrupts energization of the electronic component with an electrical signal when the electronic component is abnormal
  • a protection element that detects an abnormality of the electronic component and outputs an abnormality signal
  • a control element that operates in response to the abnormality signal of the protection component, and includes both ends of the electronic component and the protection element.
  • Both terminals of the switch are connected in parallel, the open terminal of the heating resistor and the input terminal of the electrical signal of the protection element are connected to the control element, and when the electronic component is abnormal, the protection unit
  • the control element operates in response to an abnormal signal from the protective element, the current path of the electronic component is cut off by the protection element, and the switch is short-circuited in conjunction with the fusing of the fuse to form a bypass current path It is.
  • the short-circuit element circuit includes a fuse, a heating resistor connected to one end of the fuse, a switch connected to the other end of the fuse to which the heating resistor is not connected, and the switch And a protective resistor connected to at least one of the terminals, and the switch is short-circuited in conjunction with the fusing of the fuse.
  • the compensation circuit according to the present invention includes a fuse, a heating resistor connected to one end of the fuse, a switch connected to the other end of the fuse not connected to the heating resistor, A protection resistor connected to a terminal to which the fuse is not connected, and the switch includes a short-circuit element that is short-circuited in conjunction with the melting of the fuse, and an electronic component, The terminal to which the fuse is connected and the open terminal of the protective resistor and the electronic component are connected in parallel, and the heating resistor is connected to the protective resistor, and when the electronic component is abnormal, the fuse is By melting, the switch is turned on, and a bypass current path is formed.
  • the compensation circuit includes a fuse, a heating resistor connected to one end of the fuse, a switch connected to the other end of the fuse not connected to the heating resistor, A protection resistor connected to a terminal to which the fuse is not connected, and the switch includes a short-circuit element that is short-circuited in conjunction with the melting of the fuse, an electronic component, and a current of the electronic component A protection element that is connected on the path and that interrupts energization of the electronic component with an electric signal when the electronic component is abnormal; a protective component that detects an abnormality of the electronic component and outputs an abnormal signal; and A control element that operates in response to an abnormal signal, and connects both ends of the electronic component and the protection element, a connection terminal to the fuse of the switch, and the protection resistor in parallel, and An open terminal of a resistor and an input terminal of the electrical signal of the protective element are connected to the control element, and when the electronic component is abnormal, the control element is operated in response to an abnormal signal from the protective component, By interrupt
  • the mounting body according to the present invention is a mounting body in which the short-circuit element is mounted on the mounting target, and the short-circuit element is formed on the insulating substrate, the heating resistor provided on the insulating substrate, and the insulating substrate.
  • First and second electrodes provided adjacent to each other; and a third electrode provided on the insulating substrate adjacent to the first electrode and electrically connected to the heating resistor;
  • a first current path is formed between the first and third electrodes to form a current path, and the current path between the first and third electrodes is fused by heating from the heating resistor.
  • a first external connection electrode that is formed on the same surface as the surface on which the first and second electrodes of the insulating substrate are formed, and is continuous with the first electrode, and the second electrode.
  • a second external connection electrode that is continuous with the first electrode.
  • a second external connection terminal connected to the mounting object via a first external connection terminal connected on the external connection electrode, and the second electrode connected to the second external connection electrode.
  • the first electrode and the first electrode are connected by the first soluble conductor that is connected to the mounting object through the heating resistor, melted by heating from the heating resistor, and aggregated on the first and second electrodes.
  • the combined resistance of the first external connection terminal and the second external connection terminal is lower than the conduction resistance between the first and second external connection electrodes when the second electrode is short-circuited. It is characterized by.
  • a short-circuit element according to the present invention is provided adjacent to each other on an insulating substrate, first and second heating resistors formed on the insulating substrate, and the insulating substrate.
  • the first and second electrodes, the third electrode provided on the insulating substrate adjacent to the first electrode, and electrically connected to the first heating resistor, and the insulation Provided adjacent to the second electrode on the substrate, and provided between the fourth electrode electrically connected to the second heating resistor and the first and third electrodes.
  • a first fusible conductor that cuts off the current path between the first and third electrodes by heating from the first heating resistor, and the second and fourth Current path is formed by being provided between the electrodes, and the second heating resistor is formed.
  • a second fusible conductor that melts the current path between the second and fourth electrodes, and melts by heating from the first and second heating resistors. 1.
  • the first electrode and the second electrode are short-circuited by the first and second soluble conductors aggregated on the second electrode.
  • the short-circuit element circuit includes a switch, a first fuse connected to one end of the switch, a second fuse connected to the other end of the switch, and the first fuse.
  • a first heating resistor connected to the other end opposite to the one end connected to the switch; and a second heating resistor connected to the other end opposite to the one end connected to the switch of the second fuse.
  • the switch has a heating resistor, and the switch is short-circuited by the molten conductor of the first and second fuses when the first and second fuses are blown.
  • the compensation circuit includes a switch, a first fuse connected to one end of the switch, a second fuse connected to the other end of the switch, and the switch of the first fuse.
  • a first heating resistor connected to the other end opposite to the one end connected to the second end, and a second heat generation connected to the other end opposite to the one end connected to the switch of the second fuse.
  • the switch includes a short-circuit element that is short-circuited by the molten conductor of the first and second fuses when the first and second fuses are blown, an electronic component, and the above-described switch
  • a protection element that is connected on the current path of the electronic component and that cuts off the energization of the electronic component with an electric signal when the electronic component is abnormal; a protective component that detects an abnormality of the electronic component and outputs an abnormal signal; Abnormal signal of the above protection parts First to third control elements that operate in parallel, both ends of the electronic component and the protection element, and both terminals of the switch are connected in parallel, and the first and second heating resistors, And the electrical signal input terminal of the protection element are connected to the first to third control elements, respectively, and when the electronic component is abnormal, the abnormality signal from the protection component is received and the first to third control elements are received.
  • the control element operates, the current path of the electronic component is cut off by the protection element, and the switch is short-circuited in conjunction with the fusing
  • the compensation circuit includes a switch, a first fuse connected to one end of the switch, a second fuse connected to the other end of the switch, and the switch of the first fuse.
  • a first heating resistor connected to the other end opposite to the one end connected to the second end, and a second heat generation connected to the other end opposite to the one end connected to the switch of the second fuse.
  • the switch includes a short-circuit element that is short-circuited by the molten conductor of the first and second fuses when the first and second fuses are blown, an electronic component, and the above-described switch
  • a protection element that is connected on the current path of the electronic component and that cuts off the energization of the electronic component with an electric signal when the electronic component is abnormal; a protective component that detects an abnormality of the electronic component and outputs an abnormal signal; Abnormal signal of the above protection parts
  • First and second control elements operating in parallel, both ends of the electronic component and the protection element, and both terminals of the switch are connected in parallel, and the terminal of the first heating resistor is connected to the terminal Connected to the first control element, and connected to the second control element are electrical signal input terminals of the second heating resistor and the protection element.
  • the first and second control elements operate to interrupt the current path of the electronic component by the protection element and to short-circuit the switch in conjunction with the fusing of the first and second fuses.
  • the short-circuit element circuit includes a switch, a first fuse connected to one end of the switch, a second fuse connected to the other end of the switch, and the first fuse.
  • a first heating resistor connected to the other end opposite to the one end connected to the switch; and a second heating resistor connected to the other end opposite to the one end connected to the switch of the second fuse.
  • a heating resistor and a protective resistor connected to the switch, the switch being short-circuited by the molten conductor of the first and second fuses when the first and second fuses are blown; It is what is done.
  • the compensation circuit according to the present invention is connected to the first fuse connected to one end of the switch, the second fuse connected to the other end of the switch, and the switch of the first fuse.
  • a first heating resistor connected to the other end opposite to the other end, and a second heating resistor connected to the other end opposite to the one end connected to the switch of the second fuse.
  • a protective resistor connected to the switch, the switch being short-circuited by the molten conductor of the first and second fuses when the first and second fuses are blown.
  • an electronic component a protection element that is connected on the current path of the electronic component, and that interrupts energization of the electronic component with an electric signal when the electronic component is abnormal, and detects an abnormality of the electronic component
  • Protective parts that output First to third control elements that operate in response to an abnormality signal of the protective component, and connect both ends of the electronic component and the protective element to both terminals of the switch and the protective resistor in parallel.
  • the first and second heating resistors and the electrical signal input terminal of the protection element are connected to the first to third control elements, respectively.
  • the first to third control elements operate to interrupt the current path of the electronic component by the protection element and to short-circuit the switch in conjunction with the fusing of the first and second fuses. And a bypass current path is formed.
  • the compensation circuit includes a switch, a first fuse connected to one end of the switch, a second fuse connected to the other end of the switch, and the switch of the first fuse.
  • a first heating resistor connected to the other end opposite to the one end connected to the second end, and a second heat generation connected to the other end opposite to the one end connected to the switch of the second fuse.
  • a first control element and a second control element that operate in response to an abnormality signal of the protection part, and both ends of the electronic part and the protection element, both terminals of the switch, and the protection resistor are arranged in parallel.
  • the terminal of the first heating resistor is connected to the first control element, and the input terminals of the electrical signals of the second heating resistor and the protection element are connected to the second control element.
  • the first and second control elements are operated in response to an abnormal signal from the protective component, and the current path of the electronic component is blocked by the protective element, and the first The switch is short-circuited in conjunction with the fusing of the second fuse, thereby forming a bypass current path.
  • the mounting body according to the present invention is a mounting body in which the short-circuit element is mounted on the mounting target, wherein the short-circuit element includes an insulating substrate, and first and second heating resistors formed on the insulating substrate.
  • the first and second electrodes provided adjacent to each other on the insulating substrate, and provided on the insulating substrate adjacent to the first electrode and electrically connected to the first heating resistor.
  • a first current path is formed between the first and third electrodes to form a current path, and the current path between the first and third electrodes is blown by heating from the first heating resistor.
  • a second fusible conductor that forms a flow path and blows off the current path between the second and fourth electrodes by heating from the second heating resistor; and A first external connection electrode that is formed on the same surface as the surface on which the second electrode is formed and that is continuous with the first electrode; and a second external connection electrode that is continuous with the second electrode, and The first electrode is connected to the mounting object via a first external connection terminal connected to the first external connection electrode, and the second electrode is connected to the second external connection electrode. The second object is connected to the mounting object via the second external connection terminal, melted by heating from the first and second heating resistors, and aggregated on the first and second electrodes. 1.
  • the first electrode and the second electrode are short-circuited by the second soluble conductor, 1, than the conduction resistance between the second electrode for external connection, and is characterized in that the combined resistance between the first external connection terminal and the second external connection terminals is low.
  • a short-circuit element according to the present invention is provided adjacent to each other on an insulating substrate, first and second heating resistors formed on the insulating substrate, and the insulating substrate.
  • the first soluble conductor for fusing the path, and the second to the fourth electrodes, and the above 5 is provided across the five electrodes to form a current path, and by heating from the second heating resistor, between the second electrode and the fourth electrode, and the fourth electrode, A second fusible conductor that melts each current path between the first electrode and the fifth electrode, and is melted by heating from the first and second heating resistors.
  • the first and second soluble conductors agglomerated on the electrode short-circuit the first electrode and the second electrode.
  • the short-circuit element circuit includes a switch, a first fuse connected to one end of the switch, a first heating resistor connected to an open end of the first fuse, and the switch Second and third fuses connected in series to the open end of the first and second heating resistors connected to the connection point of the second and third fuses, and the second heating resistor
  • the second and third fuses are blown by the heat generation of the first fuse, and the first fuse is blown by the heat generation of the first heating resistor, whereby the switch is short-circuited by the molten conductor of the first fuse. It is what is done.
  • the compensation circuit includes a switch, a first fuse connected to one end of the switch, a first heating resistor connected to the open end of the first fuse, and the switch.
  • a second and third fuse connected in series with the open end; and a second heating resistor connected to a connection point of the second and third fuses;
  • the second and third fuses are blown by heat generation, and the first fuse is blown by heat generation of the first heating resistor, whereby the switch is short-circuited by the molten conductor of the first fuse.
  • a short circuit element an electronic component, a protective component that detects an abnormality of the electronic component and outputs an abnormal signal, and first and second control elements that operate in response to the abnormal signal of the protective component,
  • the second and third fuses and the electrons Are connected in series to form a current path, the connection point between the switch and the first fuse is bypassed to the open end of the electronic component, and the first heating resistor is opened.
  • the first control element is connected to the end, the second control element is connected to the open end of the second heating resistor, and when the electronic component is abnormal, an abnormal signal is received from the protective component.
  • the first and second control elements operate to cut off the current path of the electronic component and short the switch in conjunction with the fusing of the first fuse, thereby forming a bypass current path. .
  • the short-circuit element circuit includes a switch, a first fuse connected to one end of the switch, a first heating resistor connected to an open end of the first fuse, and the switch And a protective resistor connected to a connection point of the first fuse, a second and third fuse connected in series with the open end of the switch, and a connection point of the second and third fuses.
  • a second heat generating resistor connected, the second and third fuses are blown by heat generated by the second heat generating resistor, and the first fuse is generated by heat generated by the first heat generating resistor. Is blown, the switch is short-circuited by the molten conductor of the first fuse.
  • the compensation circuit includes a switch, a first fuse connected to one end of the switch, a first heating resistor connected to an open end of the first fuse, and the switch.
  • a protective resistor connected to the connection point with the first fuse, a second and third fuse connected in series with the open end of the switch, and a connection point between the second and third fuses.
  • the second heat generating resistor, the second and third fuses are blown by the heat generated by the second heat generating resistor, and the first fuse is heated by the heat generated by the first heat generating resistor.
  • First and second control elements, the second and third fuses and the electronic component are connected in series to form a current path, and the open end of the protective resistor is the open end of the electronic component Connecting the first control element to the open end of the first heating resistor, connecting the second control element to the open end of the second heating resistor,
  • the first and second control elements operate in response to an abnormal signal from the protective component, and are linked to the interruption of the current path of the electronic component and the fusing of the first fuse.
  • the switch is short-circuited to form a bypass current path.
  • the mounting body according to the present invention is a mounting body in which the short-circuit element is mounted on the mounting target, wherein the short-circuit element includes an insulating substrate, and first and second heating resistors formed on the insulating substrate.
  • the first and second electrodes provided adjacent to each other on the insulating substrate, and provided on the insulating substrate adjacent to the first electrode and electrically connected to the first heating resistor.
  • a third electrode connected to the second substrate; a fourth electrode provided on the insulating substrate adjacent to the second electrode; and electrically connected to the second heating resistor;
  • a current path is formed by being provided between the first electrode and the third electrode, and by heating from the first heating resistor, A first soluble conductor for fusing the current path between the first and third electrodes;
  • a current path is formed by being provided across the fifth electrode from the second through the fourth electrode, and the second electrode and the second electrode are heated by the second heating resistor.
  • a second soluble conductor that blows off each of the current paths between the fourth electrode and between the fourth electrode and the fifth electrode, and the first and second electrodes of the insulating substrate.
  • the combined resistance of the first external connection terminal and the second external connection terminal is lower than the conduction resistance between the second external connection electrodes.
  • the insulated first electrode and the second electrode are short-circuited by the molten conductor that is melted by heating from the heating resistor and aggregated on the first and second electrodes.
  • a new bypass current path can be formed.
  • the first electrode and the second electrode which are melted by heating from the first and second heating resistors and are insulated by the molten conductor aggregated on the first and second electrodes.
  • a new bypass current path can be formed.
  • FIG. 1 It is a figure which shows the short circuit element to which this invention was applied, (A) is a top view, (B) is sectional drawing. It is a circuit diagram of a short circuiting element, (A) shows a state where the switch is turned off, and (B) shows a state where the switch is short-circuited. It is a figure which shows the state by which the 1st, 2nd electrode which was insulated was short-circuited by the molten conductor, (A) is a top view, (B) is sectional drawing. It is a top view which shows the state which the 2nd soluble conductor melt
  • FIG. 1 It is a figure which shows the other short circuit element to which this invention was applied, (A) shows the state after melt
  • FIG. 1 It is a figure which shows a protection element, (A) is sectional drawing, (B) is a top view. It is a circuit diagram of a protection element. It is a top view which shows the short circuit element which incorporated the protective resistance. It is a circuit diagram of a short circuit element incorporating a protective resistor. It is a circuit diagram of the LED illuminating device using the short circuit element which incorporated the protective resistance. It is a circuit diagram of a battery pack using a short-circuit element incorporating a protective resistor. It is a figure which shows the short circuit element to which this invention was applied, (A) is a top view, (B) is sectional drawing.
  • FIG. 1 It is a circuit diagram of a short circuiting element, (A) shows a state where the switch is turned off, and (B) shows a state where the switch is short-circuited. It is a figure which shows a short circuit element, (A) is a top view which shows the state by which the insulated 1st, 2nd electrode was short-circuited by the molten conductor, (B) is sectional drawing. In a short circuiting element, it is a top view showing the state where the 2nd soluble conductor has melted previously. It is sectional drawing which shows the modification of a short circuit element. It is sectional drawing which shows the modification of a short circuit element. It is sectional drawing which shows the modification of a short circuit element. It is sectional drawing which shows the modification of a short circuit element.
  • FIG. 4 is a circuit diagram of a battery pack using a short-circuit element, where (A) is normal, (B) is a state in which a protection element is operated, and (C) and (D) are operating a short-circuit element to form a bypass current path Indicates the state. It is a figure which shows a protection element, (A) is sectional drawing, (B) is a top view.
  • a short circuiting element it is a top view showing the state where the 2nd soluble conductor melted first. It is a figure which shows a short circuit element, (A) is a top view which shows the state by which the insulated 1st, 2nd electrode was short-circuited by the molten conductor, (B) is sectional drawing. It is sectional drawing which shows the modification of a short circuit element. It is sectional drawing which shows the modification of a short circuit element. It is sectional drawing which shows the modification of a short circuit element.
  • FIG. 1 It is sectional drawing which shows the other short circuit element to which this invention was applied, (A) shows the state after melt
  • FIG. 1A shows a plan view of the short-circuit element 1
  • FIG. 1B shows a cross-sectional view of the short-circuit element 1.
  • the short-circuit element 1 includes an insulating substrate 2, a heating resistor 3 provided on the insulating substrate 2, a first electrode 4 and a second electrode 5 provided adjacent to each other on the insulating substrate 2, and a first element A third electrode 6 provided adjacent to the first electrode 4 and electrically connected to the heating resistor 3; a fourth electrode 7 provided adjacent to the second electrode 5;
  • the first current path is formed between the third electrodes 4 and 6 and the current path between the first and third electrodes 4 and 6 is blown by heating from the heating resistor 3.
  • the second conductor 4 is provided between the fusible conductor 8 and the second and fourth electrodes 5 and 7, and melts the current path between the second and fourth electrodes 5 and 7 by heating from the heating resistor 3. 2 soluble conductors 9.
  • a cover member 10 that protects the inside is attached on the insulating substrate 2.
  • the insulating substrate 2 is formed in a substantially square shape using an insulating member such as alumina, glass ceramics, mullite, zirconia, and the like.
  • the insulating substrate 2 may be made of a material used for a printed wiring board such as a glass epoxy board or a phenol board, but it is necessary to pay attention to the temperature at which the fuse is blown.
  • the insulating substrate 2 has external terminals 12 formed on the back surface.
  • the heating resistor 3 is a conductive member that has a relatively high resistance value and generates heat when energized, and is made of, for example, W, Mo, Ru, or the like. These alloys, compositions, or compound powders are mixed with a resin binder or the like to form a paste on the insulating substrate 2 by patterning using a screen printing technique and firing.
  • the heating resistor 3 is covered with an insulating layer 11 on the insulating substrate 2.
  • the insulating layer 11 is provided to efficiently transmit the heat of the heating resistor 3 to the first to fourth electrodes 4 to 7, and is made of, for example, a glass layer.
  • the heating resistor 3 can easily aggregate the molten conductor by heating the first to fourth electrodes 4 to 7.
  • first to fourth electrodes 4, 5, 6, and 7 are formed on the insulating layer 11 covering the heating resistor 3.
  • the first electrode 4 is formed adjacent to the second electrode 5 on one side and insulated.
  • a third electrode 6 is formed on the other side of the first electrode 4.
  • the first electrode 4 and the third electrode 6 are electrically connected by connecting a first soluble conductor 8 to be described later, and constitute a current path of the short-circuit element 1.
  • the first electrode 4 is formed with a first electrode terminal portion 4 a that faces the side surface of the insulating substrate 2.
  • the first electrode terminal portion 4a is connected to an external terminal 12 provided on the back surface of the insulating substrate 2 through a through hole.
  • the third electrode 6 is connected to the heating resistor 3 through the heating element lead electrode 13 provided on the insulating substrate 2 or the insulating layer 11. Further, the heating resistor 3 is formed with a resistor terminal portion 3 a that faces the side edge of the insulating substrate 2 through the heating element lead-out electrode 13. The resistor terminal portion 3a is connected to an external terminal 12 provided on the back surface of the insulating substrate 2 through a through hole.
  • a fourth electrode 7 is formed on the other side of the second electrode 5 opposite to the one side adjacent to the first electrode 4.
  • a second soluble conductor 9 described later is connected to the second electrode 5 and the fourth electrode 7.
  • the second electrode 5 is formed with a second electrode terminal portion 5 a facing the side surface of the insulating substrate 2.
  • the second electrode terminal portion 5a is connected to an external terminal 12 provided on the back surface of the insulating substrate 2 through a through hole.
  • the first to fourth electrodes 4, 5, 6, and 7 can be formed using a general electrode material such as Cu or Ag, but at least the first and second electrodes 4, 5 are formed.
  • a coating such as Ni / Au plating, Ni / Pd plating, or Ni / Pd / Au plating is preferably formed on the surface by a known plating process. Thereby, oxidation of the 1st, 2nd electrodes 4 and 5 can be prevented, and a molten conductor can be hold
  • a solder that connects the first and second soluble conductors 8 and 9 or a low melting point metal that forms an outer layer of the first and second soluble conductors 8 and 9 is used. By melting, the first and second electrodes 4 and 5 can be prevented from being melted (soldered) and cut.
  • the first and second fusible conductors 8 and 9 are made of a low melting point metal that is quickly melted by the heat generated by the heating resistor 3, and, for example, Pb-free solder containing Sn as a main component can be suitably used.
  • the first and second soluble conductors 8 and 9 may contain a low melting point metal and a high melting point metal.
  • the low melting point metal it is preferable to use solder such as Pb-free solder, and as the high melting point metal, it is preferable to use Ag, Cu or an alloy containing these as a main component.
  • the first and second fusible conductors 8 and 9 may be formed by depositing a low melting point metal on a high melting point metal using a plating technique, and other well-known lamination techniques and film forming techniques may be used. You may form by using.
  • the first and second soluble conductors 8 and 9 are connected to the first and third electrodes 4 and 6 or the second and fourth electrodes 5 and 7 by using a low melting point metal constituting the outer layer. Can be soldered.
  • the first and second fusible conductors 8 and 9 may have an inner layer made of a low melting point metal and an outer layer made of a high melting point metal.
  • a soluble conductor in which the entire surface of the inner low melting point metal layer is covered with the outer high melting point metal layer, even when using a low melting point metal having a melting point lower than the reflow temperature, the inner layer has a low Outflow of the melting point metal to the outside can be suppressed. Further, when the inner layer low melting point metal melts, the outer layer high melting point metal is also eroded (soldered) and can be quickly melted.
  • first and second soluble conductors 8 and 9 may have a covering structure in which the inner layer is made of a high melting point metal and the outer layer is made of a low melting point metal.
  • the inner layer is made of a high melting point metal
  • the outer layer is made of a low melting point metal.
  • the first and second soluble conductors 8 and 9 may have a laminated structure in which a low melting point metal layer and a high melting point metal layer are laminated. Moreover, it is good also as a multilayered structure of four or more layers by which the low melting metal layer and the high melting metal layer were laminated
  • the first and second soluble conductors 8 and 9 may be composed of a high melting point metal having a large number of openings and a low melting point metal inserted into the openings.
  • the area of the refractory metal layer in contact with the molten low melting point metal layer increases, so that the low melting point metal layer can erode the refractory metal layer in a shorter time. Therefore, the soluble conductor can be blown out more quickly and reliably.
  • the first and second soluble conductors 8 and 9 have a volume of the low melting point metal larger than that of the high melting point metal. Thereby, the 1st, 2nd soluble conductors 8 and 9 can perform fusing in a short time by the corrosion of a refractory metal layer effectively.
  • the first and second possible conductors 8 and 9 are used.
  • a flux 15 is applied on the molten conductors 8 and 9.
  • the inside of the short-circuit element 1 is protected by covering the insulating substrate 2 with the cover member 10.
  • the cover member 10 has a side wall 16 that constitutes a side surface of the short-circuit element 1 and a top surface portion 17 that constitutes an upper surface of the short-circuit element 1, and the short-circuit element 1 is connected to the side wall 16 on the insulating substrate 2. It becomes a lid that closes the inside of the.
  • the cover member 10 is formed using an insulating member such as a thermoplastic, ceramic, glass epoxy substrate, etc., as with the insulating substrate 2.
  • the cover member 10 may have a cover electrode 18 formed on the inner surface side of the top surface portion 17.
  • the cover part electrode 18 is formed at a position overlapping the first and second electrodes 4 and 5.
  • the cover electrode 18 has a molten conductor aggregated on the first and second electrodes 4 and 5.
  • the short-circuit element 1 as described above has a circuit configuration as shown in FIGS. That is, in the short-circuit element 1, the first electrode 4 a and the second electrode 5 a are normally insulated (FIG. 2A), and the first and second soluble conductors 8 are generated by the heat generated by the heating resistor 3. , 9 constitutes a switch 20 that is short-circuited through the molten conductor (FIG. 2B). The first electrode terminal portion 4a and the second electrode terminal portion 5a constitute both terminals of the switch 20. The first fusible conductor 8 is connected to the heating resistor 3 via the third electrode 6 and the heating element lead electrode 13.
  • the short-circuit element 1 is incorporated in an electronic device or the like, whereby both terminals 4a and 5a of the switch 20 are connected in parallel with the current path of the electronic device, and the electronic component on the current path When an abnormality occurs, the switch 20 is short-circuited to form a bypass current path that bypasses the electronic component.
  • the short-circuit element 1 when an abnormality occurs in the electronic components connected in parallel, the short-circuit element 1 is supplied with electric power from the resistor terminal portion 3a side, and generates heat when the heating resistor 3 is energized. When the first and second fusible conductors 8 and 9 are melted by this heat, the molten conductors aggregate on the first and second electrodes 4 and 5 as shown in FIGS. . Since the first and second electrodes 4 and 5 are formed adjacent to each other, the agglomerated molten conductors are coupled to each other on the first and second electrodes 4 and 5, thereby the first and second electrodes 4. , 5 are short-circuited. That is, the short-circuit element 1 is short-circuited between both terminals of the switch 20 (FIG. 2B).
  • the short-circuit element 1 has a heating resistor 3 in which the overlapping area with the second soluble conductor 9 is larger than the overlapping area with the first soluble conductor 8. It is formed on the second soluble conductor 9 side so as to be wide. Thereby, although the heating resistor 3 can be heated over almost the entire surface of the second soluble conductor 9, the heating area of the first soluble conductor 8 is reduced, and as shown in FIG. The soluble conductor 9 can be melted prior to the first soluble conductor 8.
  • the short-circuit element 1 forms the second fusible conductor 9 by forming the second fusible conductor 9 narrower than the first fusible conductor 8.
  • the fusible conductor may be melted before the fusible conductor. Since the fusing time can be shortened by forming the second fusible conductor 9 narrow, the second fusible conductor 9 can be melted ahead of the first fusible conductor 8. it can.
  • the area of the first electrode 4 is preferably larger than that of the third electrode 6, and the area of the second electrode 5 is preferably larger than that of the fourth electrode 7. Since the holding amount of the molten conductor increases in proportion to the electrode area, the area of the first and second electrodes 4 and 5 is made larger than that of the third and fourth electrodes 6 and 7, thereby increasing the amount of the molten conductor.
  • the molten conductor can be agglomerated on the first and second electrodes 4 and 5, and the first and second electrodes 4 and 5 can be reliably short-circuited (FIG. 1B, FIG. 3). (B)).
  • the short-circuit element 1 does not necessarily need to cover the heating resistor 3 with the insulating layer 11, and the heating resistor 3 may be installed inside the insulating substrate 2 as shown in FIG. 6.
  • the heating resistor 3 can be heated in the same manner as when the insulating layer 11 such as a glass layer is interposed.
  • the short-circuit element 1 is shown in FIG.
  • the heating resistor 3 may be disposed on the surface of the insulating substrate 2 opposite to the surface on which the first to fourth electrodes 4, 5, 6, 7 are formed.
  • the heating resistor 3 By forming the heating resistor 3 on the back surface of the insulating substrate 2, it can be formed by a simpler process than in the insulating substrate 2.
  • the insulating layer 11 is formed on the heating resistor 3 in terms of protecting the resistor and ensuring insulation during mounting.
  • the heating resistor 3 may be disposed on the formation surface of the first to fourth electrodes 4, 5, 6, 7 of the insulating substrate 2 as shown in FIG.
  • the heating resistor 3 By forming the heating resistor 3 on the surface of the insulating substrate 2, it can be formed by a simpler process than in the insulating substrate 2.
  • the insulating layer 11 is formed on the heating resistor 3.
  • the short-circuit element according to the present invention may be formed by omitting the fourth electrode 7 and the second soluble conductor 9 of the short-circuit element 1 as shown in FIGS.
  • the first soluble conductor 8 connected between the first and third electrodes 4 and 6 is melted, so that the molten conductor wets and spreads to the second electrode 5.
  • the short-circuit element 1 is the same as that described above except that the fourth electrode 7 and the second fusible conductor 9 are omitted.
  • the first and second electrodes 4 and 5 preferably have a larger area than the third electrode 6.
  • the short-circuit element 1 can agglomerate more molten conductors on the first and second electrodes 4 and 5, and without the second soluble conductor 9, The first and second electrodes 4 and 5 can be reliably short-circuited.
  • the second electrode 5 may be provided with a second soluble conductor.
  • the second soluble conductor on the second electrode 5 is melted together with the first soluble conductor 8 by heating from the heating resistor 3, and draws the first soluble conductor 8. Thereby, the 1st electrode 4 and the 2nd electrode 5 can be short-circuited.
  • the protective resistance is a resistance value corresponding to the internal resistance of the electronic component connected to the short-circuit element.
  • the short-circuit element to which the present invention is applied is not limited to the provision of the external terminal 12 that is continuous with the first and second electrodes through the through-holes on the back surface of the insulating substrate 2, as shown in FIGS.
  • the first external connection electrode 21 that is continuous with the first electrode 4 on the surface of the insulating substrate 2 on which the first and second electrodes 4 and 5 are formed, as shown in FIG.
  • One or a plurality of first external connection terminals 22 provided on the connection electrode 21, a second external connection electrode 23 continuous with the second electrode 5, and a second external connection electrode 23 are provided.
  • one or a plurality of second external connection terminals 24 may be formed.
  • the first and second external connection electrodes 21 and 23 are electrodes that connect the short-circuit element 25 and a circuit of an electronic device in which the short-circuit element 25 is incorporated, and the first external connection electrode 21 is the same as the first electrode 4.
  • the second external connection electrode 23 is continuous with the second electrode 5.
  • the first and second external connection electrodes 21 and 23 are formed using a general electrode material such as Cu or Ag, and are the same surface as the formation surfaces of the first and second electrodes 4 and 5 of the insulating substrate 2. Is formed. That is, as for the short circuit element 25 shown in FIG. 11, the surface in which the soluble conductor 13 is provided becomes a mounting surface.
  • the first and second external connection electrodes 21 and 23 can be formed simultaneously with the first and second electrodes 4 and 5.
  • a first external connection terminal 22 is provided on the first external connection electrode 21.
  • a second external connection terminal 24 is provided on the second external connection electrode 23.
  • These first and second external connection terminals 22 and 24 are connection terminals for mounting on an electronic device, and are formed using, for example, metal bumps or metal posts. Further, as shown in FIG. 11A, the first and second external connection terminals 22 and 24 have a height protruding from the cover member 10 provided on the insulating substrate 2, and the short-circuit element 25. It can be mounted on the side of the board that is the mounting target.
  • the heating resistor 3 of the short-circuit element 25 is formed with a resistor connecting terminal 3b via the heating element lead-out electrode 13 and the resistor terminal portion 3a.
  • the resistor connection terminal 3 b is formed using a metal bump or a metal post, and protrudes upward through the insulating layer 11.
  • the short circuit element 25 is provided with the external terminal 12 on the back surface of the insulating substrate 2 like the short circuit element 1 and connects the first and second electrodes 4 and 5 and the external terminal 12 through a through hole.
  • the external connection terminals 22 and 24 are formed on the same surface as the first and second electrodes 4 and 5 via the external connection electrodes 21 and 23. Then, as shown in FIG. 11B, the short-circuit element 25 is connected between the first and second external connection electrodes 21 and 23 when the first electrode 4 and the second electrode 5 are short-circuited.
  • the combined resistance of the first external connection terminal 22 and the second external connection terminal 24 is configured to be lower than the resistance.
  • the short-circuit element 25 can improve the rating when the first and second electrodes 4 and 5 are short-circuited to form a bypass current path, and can cope with a large current. That is, in high current applications such as lithium ion secondary batteries used as power sources such as HEV and EV, further improvement of the rating of the short-circuit element is required. Then, the conduction resistance between the first and second external connection electrodes 21 and 23 short-circuited by the fusible conductor can be sufficiently lowered (for example, less than 0.4 m ⁇ ) to meet the rating improvement.
  • the first and second electrodes 4 , 5 and the external terminal 12 have a high conduction resistance (for example, 0.5 to 1.0 m ⁇ ), and even if a conductor is filled in the through hole, there is a limit to lowering the conduction resistance of the entire short-circuit element.
  • heat generated by flowing a large current between the high resistance first and second electrodes 4 and 5 and the external terminal 12 may cause damage to the bypass current path and thermal effects on other peripheral devices.
  • the short-circuit element 25 is provided with external connection terminals 22 and 24 on the same surface as the first and second electrodes 4 and 5.
  • the external connection terminals 22 and 24 are provided on the external connection electrodes 21 and 23, and a terminal having a high degree of freedom in shape and size and a low conduction resistance can be easily provided.
  • the short-circuit element 25 has a first external connection rather than a conduction resistance between the first and second external connection electrodes 21 and 23 when the first electrode 4 and the second electrode 5 are short-circuited.
  • the combined resistance of the terminal 22 and the second external connection terminal 24 is configured to be low.
  • the conduction resistance ahead of the first and second external connection electrodes 21 and 23, which are high in the configuration of the short-circuit element 1, can be easily lowered, and the rating is dramatically improved. Can be achieved.
  • first and second external connection terminals 22 and 24 for example, metal bumps or metal posts made of Pb-free solder whose main component is Sn can be used.
  • the shape of the metal bump or the metal post is not limited.
  • the resistance values of the first and second external connection terminals 22 and 24 can be obtained from the material, shape, and size. As an example, when a rectangular parallelepiped metal post (Cu core: 0.6 mm ⁇ 0.6 mm, cross-sectional area 0.36 mm 2, height 1 mm, specific resistance 17.2 ⁇ m ⁇ ⁇ mm) is used.
  • the resistance value of the Cu core of one terminal is about 0.048 m ⁇ , and the resistance value obtained by connecting the first and second external connection terminals 22 and 24 in series is as low as less than 0.096 m ⁇ in consideration of the solder coating. It can be seen that the overall rating of the short-circuit element 25 can be improved.
  • the short-circuit element 25 obtains the total resistance value of the entire element from the resistance value between the first and second external connection terminals 22 and 24 at the time of the short-circuit, and this total resistance value is known as the first and second values. From the difference with the combined resistance of the external connection terminals 22 and 24, the conduction resistance between the first and second external connection electrodes 21 and 23 at the time of short circuit can be obtained.
  • the short-circuit element 25 measures the resistance between the first and second external connection electrodes 21 and 23 at the time of short-circuit, and the first and second external elements are calculated from the difference from the total resistance value of the entire element at the time of short-circuit. The combined resistance of the connection terminals 22 and 24 can be obtained.
  • the short-circuit element 25 is widely provided by forming the first and second external connection electrodes 21 and 23 in a rectangular shape, and the first and second external connection terminals 22 and 24 are provided.
  • the conduction resistance may be lowered by providing a plurality.
  • the short-circuit element 25 reduces the conduction resistance by providing the first and second external connection terminals 22 and 24 having large diameters on the first and second external connection electrodes 21 and 23 that are widely provided. May be.
  • the first and second external connection terminals 22 and 24 may be formed by providing low melting point metal layers 22b and 24b on the surfaces of the high melting point metals 22a and 24a serving as cores.
  • the metal constituting the low melting point metal layers 22b and 24b solder such as Pb free solder containing Sn as a main component can be preferably used.
  • the high melting point metals 22a and 24a Cu or Ag is used as a main component. An alloy to be used can be preferably used.
  • the reflow temperature exceeds the melting temperature of the low melting point metal layers 22b and 24b when the short circuit element 25 is reflow mounted. Even if the metal is melted, it can be prevented from melting as the first and second external connection terminals 22 and 24.
  • the first and second external connection terminals 22 and 24 can be connected to the first and second external connection electrodes 21 and 23 using a low melting point metal constituting the outer layer.
  • the first and second external connection terminals 22 and 24 can be formed by forming a low melting point metal on the high melting point metal 22a and 24a by using a plating technique, and other known lamination techniques and films. It can also be formed by using a forming technique.
  • the first and second external connection terminals 22 and 24 are formed by a conductive plating layer or a conductive layer formed by applying a conductive paste, in addition to using metal bumps or metal posts. May be.
  • first and second external connection terminals 22 and 24 are provided in advance on the mounting object side such as a substrate on which the short-circuit element 25 is mounted, and in the mounting body on which the short-circuit element is mounted, You may make it connect with the external connection electrodes 21 and 23.
  • FIG. 13 is a diagram illustrating a circuit configuration of the LED lighting device 30 as an example of the electronic apparatus.
  • the LED lighting device 30 has a plurality of light emitting diodes 31 connected in series on the current path. Further, in the LED lighting device 30, each light emitting diode 31 and both terminals 4 a and 5 a of the switch 20 of the short-circuit element 1 are connected in parallel via the protective resistor 34, and the resistor terminal portion 3 a of the short-circuit element 1. Are connected on the current path, thereby forming the LED unit 32.
  • the LED lighting device 30 is configured by connecting a plurality of LED units 32 in series.
  • the protective resistor 34 has a resistance value corresponding to the internal resistance of the light emitting diode 31. Further, the resistance value of the heating resistor 3 is larger than the internal resistance of the light emitting diode 31. Therefore, when the light emitting diode 31 is operating normally, the LED lighting device 30 does not flow to the short-circuit element 1 side but flows to the light emitting diode 31 side as shown in FIG. 13B.
  • the LED lighting device 30 causes the current E to flow to the resistor terminal portion 3a side of the short-circuit element 1. Flowing. As a result, in the short-circuit element 1, the heating resistor 3 generates heat, the first and second soluble conductors 8 and 9 are melted, and the molten conductor is aggregated on the first and second electrodes 4 and 5. . Therefore, as shown in FIG. 13D, the short-circuit element 1 can form a bypass current path by short-circuiting both terminals 4a and 5a of the switch 20. The first and second fusible conductors 8 and 9 are fused to stop the power supply to the heating resistor 3.
  • a bypass current path that bypasses the light emitting diode 31 can be formed.
  • the lighting function can be maintained.
  • the protection resistor 34 has substantially the same resistance value as the internal resistance of the light emitting diode 31, the LED lighting device 30 can have substantially the same current value as in the normal state on the bypass current path.
  • FIG. 14 is a diagram illustrating a circuit configuration of a battery pack 40 in which a lithium ion battery used in various electronic devices such as a car and an electric tool is built.
  • the battery pack 40 ensures a high voltage and a large current by connecting a plurality of battery cells 41 in series on the current path.
  • a protection element 42 that interrupts the current path when an abnormality such as overcharge or overdischarge of the battery cell 41 is connected to each battery cell 41.
  • the protection element 42 is formed on the insulating substrate 44, the heating resistor 46 laminated on the insulating substrate 44 and covered with the insulating member 45, and both ends of the insulating substrate 44. Electrodes 47 (A 1) and 47 (A 2), a heating element extraction electrode 48 laminated on the insulating member 45 so as to overlap the heating resistor 46, and electrodes 47 (A 1) and 47 (A 2) at both ends. And a fusible conductor 49 having a central portion connected to the heating element extraction electrode 48.
  • the insulating substrate 44 is formed in a substantially rectangular shape using the same material as that of the insulating substrate 2 described above.
  • the heating resistor 46 is formed by the same manufacturing method using the same material as the heating resistor 3 described above.
  • an insulating member 45 is disposed so as to cover the heating resistor 46, and a heating element extraction electrode 48 is disposed so as to face the heating resistor 46 through the insulating member 45.
  • an insulating member 45 may be laminated between the heating resistor 46 and the insulating substrate 44.
  • One end of the heating element extraction electrode 48 is connected to the heating element electrode 50 (P1).
  • the other end of the heating resistor 46 is connected to the other heating element electrode 50 (P2).
  • the soluble conductor 49 can be the same as the first and second soluble conductors 8 and 9 described above.
  • the flux may be applied to almost the entire surface of the soluble conductor 49 in order to prevent the soluble conductor 49 from being oxidized, as in the case of the short-circuit element 1.
  • the protection element 42 may place a cover member on the insulating substrate 44 in order to protect the inside.
  • the protective element 42 as described above has a circuit configuration as shown in FIG. That is, the protection element 42 generates heat by melting the soluble conductor 49 by energizing the soluble conductor 49 connected in series via the heating element extraction electrode 48 and the connection point of the soluble conductor 49 to generate heat.
  • the circuit configuration includes a resistor 46. Of the two electrodes 47 of the protection element 42, one is connected to A1, and the other is connected to A2. Further, the heating element extraction electrode 48 and the heating element electrode 50 connected thereto are connected to P1, and the other heating element electrode 50 is connected to P2.
  • the protection element 42 is used for the circuit in the battery pack 40 of a lithium ion secondary battery, as shown to FIG. 14 (A).
  • the battery pack 40 includes a battery cell 41, a protection element 42, a short-circuit element 1, a first current control element 52 that controls the operation of the protection element 42, and a second current control that controls the operation of the short-circuit element 1.
  • a plurality of battery units 51 each including an element 53 and a protective resistor 54 are provided, and the plurality of battery units 51 are connected in series.
  • the battery pack 40 detects the voltage of the battery unit 51, the charge / discharge control circuit 55 that controls charging / discharging of the battery unit 51, and the battery cell 41 of each battery unit 51, and the protection element 42 and the short-circuit element 1. And a detection circuit 56 for outputting an abnormal signal to the first and second current control elements 52 and 53 for controlling the operation.
  • the electrode 47 (A1) of the protection element 42 is connected in series with the battery cell 41, and the electrode 47 (A2) is connected to the charge / discharge current path of the battery pack 40.
  • the second electrode terminal portion 5 a of the short-circuit element 1 is connected to the open end of the protective element 42 via the protective resistor 54, and the first electrode terminal portion 4 a is open to the battery cell 41.
  • the protection element 42 and the battery cell 41 and the short-circuit element 1 are connected in parallel.
  • the heating element electrode 50 (P2) of the protection element 42 is connected to the first current control element 52, and the resistor terminal portion 3a of the short circuit element 1 is connected to the second current control element 53. ing.
  • the detection circuit 56 is connected to each battery cell 41, detects the voltage value of each battery cell 41, and supplies each voltage value to the control unit 59 of the charge / discharge control circuit 55. Further, when the battery cell 41 becomes an overcharge voltage or an overdischarge voltage, the detection circuit 56 sends an abnormal signal to the first and second current control elements 52 and 53 of the battery unit 51 having the battery cell 41. Output.
  • the first and second current control elements 52 and 53 are constituted by, for example, field effect transistors (hereinafter referred to as FETs), and the voltage value of the battery cell 41 is set to a predetermined value by a detection signal output from the detection circuit 56.
  • FETs field effect transistors
  • the protection element 42 and the short-circuit element 1 are operated to switch the charge / discharge current path of the battery unit 51 through the third and fourth current control elements 57 and 58. Regardless of whether it is cut off, the switch 20 of the short-circuit element 1 is short-circuited, and control is performed so as to form a bypass current path that bypasses the battery unit 51.
  • the battery pack 40 is detachably connected to the charging device via the positive terminal 40a and a negative terminal (not shown), and the charging voltage from the charging device is applied to each battery cell 41.
  • the battery pack 40 charged by the charging device can operate the electronic device by connecting the positive electrode terminal 40a and the negative electrode terminal to the electronic device operated by the battery.
  • the charge / discharge control circuit 55 controls the operations of the third and fourth current control elements 57 and 58 connected in series to the current path flowing from the battery unit 51 to the charging device, and the operations of these current control elements 57 and 58.
  • the third and fourth current control elements 57 and 58 are configured by, for example, FETs, and control the gate voltage by the control unit 59 to control conduction and interruption of the current path of the battery unit 51.
  • the control unit 59 operates by receiving power supply from the charging device, and according to the detection result by the detection circuit 56, when the battery unit 51 is overdischarged or overcharged, the current control element is cut off.
  • the operations of 57 and 58 are controlled.
  • the battery pack 40 when a voltage abnormality or the like is detected in the battery cell 41, an abnormality signal is output from the detection circuit 56 to the first current control element 52, and the heating resistor 46 of the protection element 42 generates heat. . As shown in FIG. 14C, the protection element 42 heats and melts the fusible conductor 49 by the heating resistor 46, thereby blocking between the electrodes 47 (A1) and 47 (A2). Thereby, the battery unit 51 having the abnormal battery cell 41 can be shut off from the charge / discharge current path of the battery pack 40. Note that power supply to the heating resistor 46 is stopped when the fusible conductor 49 is melted.
  • the short-circuit element 1 has the first and second electrodes 4, 5 by heating and melting the first and second soluble conductors 8, 9 by the heating resistor 3.
  • the molten conductor agglomerates on the top, and the first electrode terminal portion 4a and the second electrode terminal portion 5a of the switch 20 are short-circuited.
  • the short circuit element 1 can form a bypass current path that bypasses the battery unit 51.
  • the first and second fusible conductors 8 and 9 are fused to stop the power supply to the heating resistor 3.
  • the protective resistor 54 has substantially the same resistance value as the internal resistance of the battery cell 41, so that it can have the same capacity as normal even on the bypass current path.
  • a bypass current path that bypasses the battery unit 51 can be formed and is charged by the remaining normal battery units 51.
  • the discharge function can be maintained.
  • the protection element of the present invention is not limited to use in a battery pack of a lithium ion secondary battery, and can of course be applied to various uses that require interruption of a current path and bypass by an electric signal.
  • the operating conditions of the first and second current control elements 52 and 53 and the third and fourth current control elements 57 and 58 are not limited to the case where the voltage of the battery cell 41 is abnormal. It can be activated by detecting any accident such as a sudden rise or submersion.
  • the short-circuit element may be formed by incorporating a protective resistor in advance.
  • symbol is attached
  • FIG. 17 is a plan view of the short-circuit element 60 in which the protective resistor 61 is formed on the insulating substrate 2.
  • the short-circuit element 60 includes a protective resistor 61 connected to the second electrode 5, and a second electrode terminal portion 5 a is formed via the protective resistor 61.
  • the protective resistor 61 can be formed simultaneously by the same process using the same material as the heating resistor 3 described above.
  • FIG. 18 is a diagram illustrating a circuit configuration of the short-circuit element 60.
  • the first electrode terminal portion 4 a and the second electrode terminal portion 5 a are connected via the protective resistor 61 when the switch 20 is short-circuited. That is, the circuit configuration of the short-circuit element 60 is connected to the fuses 8 and 9, the heating resistor 3 connected to one end of the fuses 8 and 9, and the other end of the fuses 8 and 9 to which the heating resistor 3 is not connected.
  • the switch 20 and a protective resistor 61 connected to at least one of the terminals of the switch 20 are provided, and the switch 20 is short-circuited in conjunction with the fusing of the fuses 8 and 9.
  • FIG. 19 is a diagram illustrating a circuit configuration of the LED lighting device 62 in which the short-circuit element 60 is incorporated.
  • the circuit configuration of the LED lighting device 62 has the same configuration as the LED lighting device 30 described above except that the short-circuit element 60 is used instead of the short-circuit element 1. That is, the circuit configuration of the LED lighting device 62 includes the short-circuit element 60 and the light-emitting diode 31 described above, the terminal 4a to which the switch 20 and the fuses 8 and 9 are connected, the open terminal 5a of the protective resistor 61, and the light-emitting diode. 31 are connected in parallel, and the heating resistor 3 is connected to the protective resistor 61.
  • the protective resistor 61 of the short-circuit element 60 has substantially the same resistance value as the internal resistance of the light emitting diode 31 of each LED unit 32.
  • a bypass current path that bypasses the light emitting diode 31 can be formed.
  • the lighting function can be maintained.
  • the protection resistor 61 has substantially the same resistance value as the internal resistance of the light emitting diode 31
  • the LED illumination device 62 can have the same current value as that in the normal state on the bypass current path.
  • FIG. 20 is a diagram illustrating a circuit configuration of the battery pack 65 in which the short-circuit element 60 is incorporated.
  • the circuit configuration of the battery pack 65 is the same as the circuit configuration of the battery pack 40 described above except that the short-circuit element 60 is used instead of the short-circuit element 1. That is, the circuit configuration of the battery pack 65 is connected to the above-described short-circuit element 60, the battery cell 41, and the current path of the battery cell 41, and the battery cell 41 is energized by an electrical signal when the battery cell 41 is abnormal.
  • a protection element 42 that shuts off, a detection circuit 56 that detects an abnormality of the battery cell 41 and outputs an abnormality signal, and first and second current control elements 52 and 53 that operate in response to the abnormality signal of the detection circuit 56; And connecting both ends of the battery cell 41 and the protection element 42 to the connection terminal 4a of the fuse 8.9 of the switch 20 and the open terminal 5a of the protection resistor 61 in parallel, and a resistor terminal portion of the heating resistor 3 3a and the input terminal P2 of the electric signal of the protection element 42 are connected to the first and second current control elements 52 and 53, and when the battery cell 41 is abnormal, an abnormal signal from the detection circuit 56 In response, the first and second current control elements 52 and 53 operate, the protection element 42 cuts off the current path of the battery cell 41, and the switch 20 is short-circuited in conjunction with the fusing of the fuses 8 and 9. A path is formed.
  • the protective resistance 61 of the short-circuit element 60 provided in each battery unit 51 has substantially the
  • a bypass current path that bypasses the battery unit 51 can be formed and charged by the remaining normal battery units 51.
  • the discharge function can be maintained.
  • the battery pack 65 can have the same current value as that in the normal state on the bypass current path because the protective resistance 61 has substantially the same resistance value as the internal resistance of the battery cell 41.
  • the external terminal 12 is provided on the back surface of the insulating substrate 2, and the first electrode terminal portion 4a and the second electrode terminal portion 5a are connected to the external terminal 12 through a through hole.
  • the first external connection electrode 21 that is continuous with the first electrode 4 the first electrode 4 is formed on the surface of the insulating substrate 2 on which the first and second electrodes 4 and 5 are formed. You may make it form the 2nd external connection electrode 23 and the 2nd external connection terminal 24 which follow the 2nd electrode 5 via the external connection terminal 22, the protective resistance 61, and.
  • FIG. 21A is a plan view of the short-circuit element 101
  • FIG. 21B is a cross-sectional view of the short-circuit element 101.
  • the short circuit element 101 includes an insulating substrate 102, a first heating resistor 121 and a second heating resistor 122 provided on the insulating substrate 102, and a first electrode provided adjacent to the insulating substrate 102.
  • 104, the second electrode 105, and the third electrode 106 provided adjacent to the first electrode 104 and electrically connected to the first heating resistor 121, and adjacent to the second electrode 105.
  • a current path configured by being provided between the fourth electrode 107 electrically connected to the second heating resistor 122 and the first and third electrodes 104 and 106, Between the first fusible conductor 108 and the second and fourth electrodes 105 and 107, which melt the current path between the first and third electrodes 104 and 106 by heating from the first heating resistor 121.
  • a second exothermic resistor By heating from the body 122, and a second, second fusible conductor 109 to fuse the current path between the fourth electrode 105 and 107.
  • the short-circuit element 101 has a cover member 110 that protects the inside on the insulating substrate 102.
  • the insulating substrate 102 is formed in a substantially square shape using an insulating member such as alumina, glass ceramics, mullite, zirconia, and the like.
  • the insulating substrate 102 may be made of a material used for a printed wiring board such as a glass epoxy board or a phenol board, but it is necessary to pay attention to the temperature at which the fuse is blown.
  • the insulating substrate 102 has an external terminal 112 formed on the back surface.
  • the first and second heating resistors 121 and 122 are conductive members that have a relatively high resistance value and generate heat when energized, and are made of, for example, W, Mo, Ru, or the like. These alloys, compositions, or compound powders are mixed with a resin binder or the like to form a paste on the insulating substrate 102 using a screen printing technique and then fired.
  • the first and second heating resistors 121 and 122 are covered with the insulating layer 111 on the insulating substrate 102.
  • First and third electrodes 104 and 106 are formed on the insulating layer 111 covering the first heating resistor 121, and the second electrode 104, 106 is formed on the insulating layer 111 covering the second heating resistor 122.
  • the fourth electrodes 105 and 107 are formed.
  • the first electrode 104 is formed adjacent to the second electrode 105 on one side and is insulated.
  • a third electrode 106 is formed on the other side of the first electrode 104.
  • the first electrode 104 and the third electrode 106 are electrically connected when the first fusible conductor 108 is connected to form a current path of the short-circuit element 101.
  • the first electrode 104 is connected to the first electrode terminal portion 104 a facing the side surface of the insulating substrate 102.
  • the first electrode terminal portion 104a is connected to an external terminal 112 provided on the back surface of the insulating substrate 102 through a through hole.
  • the third electrode 106 is connected to the first heating resistor 121 through the first heating element lead electrode 123 provided on the insulating substrate 102 or the insulating layer 111.
  • the first heating resistor 121 is connected to the first resistor terminal portion 121 a facing the side edge of the insulating substrate 102 via the first heating element lead-out electrode 123.
  • the first resistor terminal portion 121a is connected to an external terminal 112 provided on the back surface of the insulating substrate 102 through a through hole.
  • a fourth electrode 107 is formed on the other side of the second electrode 105 opposite to the one side adjacent to the first electrode 104.
  • a second soluble conductor 109 is connected to the second electrode 105 and the fourth electrode 107.
  • the second electrode 105 is connected to the second electrode terminal portion 105 a facing the side surface of the insulating substrate 102.
  • the second electrode terminal portion 105a is connected to an external terminal 112 provided on the back surface of the insulating substrate 102 through a through hole.
  • the fourth electrode 107 is connected to the second heating resistor 122 through the second heating element lead electrode 124 provided on the insulating substrate 102 or the insulating layer 111.
  • the second heating resistor 122 is connected to the second resistor terminal portion 122a facing the side edge of the insulating substrate 102 through the second heating element lead-out electrode 124.
  • the second resistor terminal portion 122a is connected to an external terminal 112 provided on the back surface of the insulating substrate 102 through a through hole.
  • the first to fourth electrodes 104, 105, 106, and 107 can be formed using a general electrode material such as Cu or Ag, but at least the first and second electrodes 104 and 105 are formed.
  • a coating such as Ni / Au plating, Ni / Pd plating, or Ni / Pd / Au plating is preferably formed on the surface by a known plating process. Thereby, the oxidation of the first and second electrodes 104 and 105 can be prevented, and the molten conductor can be reliably held.
  • the short-circuit element 101 when the short-circuit element 101 is mounted by reflow soldering, a solder that connects the first and second soluble conductors 108 and 109 or a low melting point metal that forms an outer layer of the first and second soluble conductors 108 and 109 is used. By melting, the first and second electrodes 104 and 105 can be prevented from being eroded (soldered) and cut.
  • the first and second fusible conductors 108 and 109 are made of a low melting point metal that is quickly melted by the heat generated by the first and second heat generating resistors 121 and 122, for example, Pb-free solder containing Sn as a main component. Can be suitably used.
  • the first and second soluble conductors 108 and 109 may contain a low melting point metal and a high melting point metal.
  • the low melting point metal it is preferable to use solder such as Pb-free solder, and as the high melting point metal, it is preferable to use Ag, Cu or an alloy containing these as a main component.
  • the high melting point metal and the low melting point metal even when the reflow temperature exceeds the melting temperature of the low melting point metal layer and the low melting point metal is melted when the short circuit element 101 is reflow mounted, the first, The second soluble conductors 108 and 109 do not blow out.
  • the first and second fusible conductors 108 and 109 may be formed by depositing a low melting point metal on a high melting point metal using a plating technique, and other well-known lamination techniques and film forming techniques may be used. You may form by using.
  • the first and second fusible conductors 108 and 109 are connected to the first and third electrodes 104 and 106 or the second and fourth electrodes 105 and 107 using a low melting point metal constituting the outer layer. Can be soldered.
  • the first and second soluble conductors 108 and 109 may have a low melting point metal for the inner layer and a high melting point metal for the outer layer.
  • a soluble conductor in which the entire surface of the inner low melting point metal layer is covered with the outer high melting point metal layer even when using a low melting point metal having a melting point lower than the reflow temperature, the inner layer has a low Outflow of the melting point metal to the outside can be suppressed. Further, when the inner layer low melting point metal melts, the outer layer high melting point metal is also eroded (soldered) and can be quickly melted.
  • the first and second fusible conductors 108 and 109 may have a coating structure in which the inner layer is made of a high melting point metal and the outer layer is made of a low melting point metal.
  • the inner layer is made of a high melting point metal
  • the outer layer is made of a low melting point metal.
  • first and second soluble conductors 108 and 109 may have a laminated structure in which a low melting point metal layer and a high melting point metal layer are laminated. Moreover, it is good also as a multilayered structure of four or more layers by which the low melting metal layer and the high melting metal layer were laminated
  • the first and second fusible conductors 108 and 109 may be composed of a high melting point metal having a large number of openings and a low melting point metal inserted into the openings.
  • a high melting point metal having a large number of openings
  • a low melting point metal inserted into the openings.
  • the first and second soluble conductors 108 and 109 have a low melting point metal volume larger than the high melting point metal volume. Thereby, the 1st, 2nd soluble conductors 108 and 109 can perform fusing in a short time by the corrosion of a refractory metal layer effectively.
  • the first and second soluble conductors 108 and 109 can be improved.
  • a flux 115 is applied on the molten conductors 108 and 109.
  • the inside of the short circuit element 101 is protected by covering the insulating substrate 102 with the cover member 110.
  • the cover member 110 has a side wall 116 that constitutes a side surface of the short-circuit element 101 and a top surface portion 117 that constitutes an upper surface of the short-circuit element 101, and the short-circuit element 101 is connected to the side wall 116 on the insulating substrate 102. It becomes a lid that closes the inside of the.
  • the cover member 110 is formed using an insulating member such as a thermoplastic, ceramic, or glass epoxy substrate.
  • the cover member 110 may be formed with a cover portion electrode 118 on the inner surface side of the top surface portion 117.
  • the cover part electrode 118 is formed at a position overlapping the first and second electrodes 104 and 105.
  • the cover electrode 118 has the first and second electrodes 104, When the molten conductor aggregated on 105 comes into contact and spreads wet, the allowable amount for holding the molten conductor can be increased.
  • the short circuit element 101 as described above has a circuit configuration as shown in FIGS. That is, in the short-circuit element 101, the first electrode 104 and the second electrode 105 are insulated during normal operation, and the first and second fusible conductors are generated by the heat generated by the first and second heating resistors 121 and 122. When the fuses 108 and 109 are melted, the switch 120 is configured to be short-circuited through the molten conductor (FIG. 22B).
  • the first electrode terminal portion 104a and the second electrode terminal portion 105a constitute both terminals of the switch 120.
  • the first fusible conductor 108 is connected to the first heating resistor 121 through the third electrode 106 and the first heating element extraction electrode 123.
  • the second fusible conductor 109 is connected to the second heating resistor 122 via the fourth electrode 107 and the second heating element extraction electrode 124.
  • the short-circuit element 101 is incorporated in an electronic device or the like, whereby both terminals 104a and 105a of the switch 120 are connected in parallel with the current path of the electronic device, and the electronic component on the current path is connected.
  • the switch 120 is short-circuited to form a bypass current path that bypasses the electronic component.
  • the short-circuit element 101 when an abnormality occurs in the electronic components connected in parallel, the short-circuit element 101 is supplied with power from the first and second resistor terminal portions 121a and 122a, and the first and second heating resistors.
  • the body 121, 122 generates heat when energized.
  • the first and second fusible conductors 108 and 109 are melted by this heat, the molten conductor aggregates on the first and second electrodes 104 and 105. Since the first and second electrodes 104 and 105 are formed adjacent to each other, the agglomerated molten conductors are coupled to each other on the first and second electrodes 104 and 105, thereby the first and second electrodes 104. , 105 are short-circuited. That is, the shorting element 101 is short-circuited between both terminals of the switch 120 (FIG. 22B).
  • first heating resistor 121 is stopped because the first fusible conductor 108 is cut off and the first and third electrodes 104 and 106 are cut off, and the second heating element 121 is stopped.
  • the energization of the resistor 122 is stopped because the second fusible conductor 109 is melted and the second and fourth electrodes 105 and 107 are cut off.
  • the second soluble conductor 109 is preferably melted before the first soluble conductor 108. Since the first heating resistor 121 and the second heating resistor 122 are separately heated in the short-circuit element 101, the second heating resistor 122 is first heated as the energization timing, and thereafter By causing the first heating resistor 121 to generate heat, as shown in FIG. 24, the second soluble conductor 109 is easily melted ahead of the first soluble conductor 108, and FIG.
  • the molten conductors of the first and second fusible conductors 108 and 109 are surely agglomerated and bonded onto the first and second electrodes 104 and 105, so that the first and second The electrodes 104 and 105 can be short-circuited.
  • the short-circuit element 101 forms the second fusible conductor 109 narrower than the first fusible conductor 108 by forming the second fusible conductor 109 more narrowly than the first fusible conductor 108. It may be melted first.
  • the fusing time can be shortened, so that the second soluble conductor 109 can be melted ahead of the first soluble conductor 108. it can.
  • the area of the first electrode 104 is preferably larger than that of the third electrode 106 and the area of the second electrode 105 is preferably larger than that of the fourth electrode 107. Since the holding amount of the molten conductor increases in proportion to the electrode area, the area of the first and second electrodes 104 and 105 is made larger than that of the third and fourth electrodes 106 and 107. These molten conductors can be agglomerated on the first and second electrodes 104 and 105, and the first and second electrodes 104 and 105 can be reliably short-circuited.
  • the short-circuit element 101 does not necessarily need to cover the first and second heat generating resistors 121 and 122 with the insulating layer 111.
  • the first and second heating resistors 121 and 122 can be heated in the same manner as when the insulating layer 111 such as a glass layer is interposed. it can.
  • the short-circuit element 101 has the first and second heating resistors 121 and 122 opposite to the formation surfaces of the first to fourth electrodes 104, 105, 106, and 107 of the insulating substrate 102. It may be installed on the back side of.
  • the first and second heat generating resistors 121 and 122 can be formed by a simpler process than in the insulating substrate 102.
  • the insulating layer 111 is formed on the first and second heating resistors 121 and 122 in terms of protecting the resistor and ensuring insulation during mounting.
  • the short-circuit element 101 has the first and second heating resistors 121 and 122 on the formation surface of the first to fourth electrodes 104, 105, 106, and 107 of the insulating substrate 2. It may be installed.
  • the first and second heat generating resistors 121 and 122 can be formed by a simpler process than that in the insulating substrate 102.
  • the insulating layer 111 is formed on the first and second heating resistors 121 and 122.
  • the protective resistance is a resistance value corresponding to the internal resistance of the electronic component connected to the short-circuit element, and is smaller than the resistance values of the heating resistors 121 and 122. That is, when the electronic component is operating normally, current does not flow to the short-circuit element side but flows to the electronic component side.
  • the short-circuit element 101 to which the present invention is applied is not limited to the provision of the external terminal 112 continuous with the first and second electrodes 104 and 105 through the through-holes on the back surface of the insulating substrate 102 as shown in FIG. )
  • a first external connection electrode 131 continuous with the first electrode 104 is formed on the surface of the insulating substrate 102 on which the first and second electrodes 104 and 105 are formed, like a short-circuit element 130 shown in FIG.
  • first external connection terminals 132 provided on the first external connection electrode 131, a second external connection electrode 133 continuous with the second electrode 105, and a second external connection electrode 133 You may make it form the 2nd external connection terminal 134 which consists of one or more provided on the top.
  • the first and second external connection electrodes 131 and 133 are electrodes that connect the short-circuit element 130 and a circuit of an electronic device in which the short-circuit element 130 is incorporated, and the first external connection electrode 131 is connected to the first electrode 104.
  • the second external connection electrode 133 is continuous with the second electrode 105.
  • the first and second external connection electrodes 131 and 133 are formed using a general electrode material such as Cu or Ag, and are the same as the formation surfaces of the first and second electrodes 104 and 105 of the insulating substrate 102. Is formed. In other words, in the short-circuit element 130 shown in FIG. Note that the first and second external connection electrodes 131 and 133 can be formed simultaneously with the first and second electrodes 104 and 105.
  • the first external connection terminal 132 is provided on the first external connection electrode 131.
  • a second external connection terminal 134 is provided on the second external connection electrode 133.
  • These first and second external connection terminals 132 and 134 are connection terminals for mounting on an electronic device, and are formed using, for example, metal bumps or metal posts. Further, as shown in FIG. 28A, the first and second external connection terminals 132 and 134 have a height protruding from the cover member 110 provided on the insulating substrate 102, and the short-circuit element 130. It can be mounted on the side of the board that is the mounting target.
  • the first heating resistor 121 of the short-circuit element 130 is formed with a first resistor connection terminal 121b via the first heating element lead-out electrode 123 and the first resistor terminal portion 121a.
  • the second heating resistor 122 of the short-circuit element 130 has a second resistor connection terminal 122b formed through the second heating element lead electrode 124 and the second resistor terminal portion 122a.
  • the first and second resistor connection terminals 121b and 122b are formed by using metal bumps or metal posts, and upward through the insulating layer 111. It is protruding.
  • the short-circuit element 130 is provided with the external terminal 112 on the back surface of the insulating substrate 102 like the short-circuit element 101 and connects the first and second electrodes 104 and 105 and the external terminal 112 through a through hole.
  • external connection terminals 132 and 134 are formed on the same surface as the first and second electrodes 104 and 105 via external connection electrodes 131 and 133.
  • the short-circuit element 130 is connected between the first and second external connection electrodes 131 and 133 when the first electrode 104 and the second electrode 105 are short-circuited.
  • the combined resistance of the first external connection terminal 132 and the second external connection terminal 134 is configured to be lower than the resistance.
  • the short-circuit element 130 can improve the rating when the first and second electrodes 104 and 105 are short-circuited to form a bypass current path, and can cope with a large current. That is, in high current applications such as lithium ion secondary batteries used as power sources such as HEV and EV, further improvement of the rating of the short-circuit element is required. Then, the conduction resistance between the first and second external connection electrodes 131 and 133 short-circuited by the fusible conductor can be lowered sufficiently to meet the rating improvement (for example, less than 0.4 m ⁇ ).
  • the first and second electrodes 104 are provided.
  • 105 and the external terminal 112 have high conduction resistance (for example, 0.5 to 1.0 m ⁇ ), and there is a limit to lowering the conduction resistance of the entire short-circuit element even if a conductor is filled in the through hole.
  • heat generated by flowing a large current between the high resistance first and second electrodes 104 and 105 and the external terminal 112 may cause damage to the bypass current path and heat effects on other peripheral devices.
  • the short-circuit element 130 has external connection terminals 132 and 134 on the same surface as the first and second electrodes 104 and 105.
  • the external connection terminals 132 and 134 are provided on the external connection electrodes 131 and 133, and a terminal having a high degree of freedom in shape and size and a low conduction resistance can be easily provided.
  • the short-circuit element 130 is connected to the first external connection rather than the conduction resistance between the first and second external connection electrodes 131 and 133 when the first electrode 104 and the second electrode 105 are short-circuited.
  • the combined resistance of the terminal 132 and the second external connection terminal 134 is configured to be low.
  • the conduction resistance ahead of the first and second external connection electrodes 131 and 133 which are high in the configuration of the short-circuit element 101, can be easily lowered, and the rating is dramatically improved. Can be achieved.
  • the first and second external connection terminals 132 and 134 can be configured using, for example, metal bumps or metal posts made of Pb-free solder whose main component is Sn.
  • the shape of the metal bump or the metal post is not limited.
  • the resistance values of the first and second external connection terminals 132 and 134 can be obtained from the material, shape, and size. As an example, when a rectangular parallelepiped metal post (Cu core: 0.6 mm ⁇ 0.6 mm, cross-sectional area 0.36 mm 2, height 1 mm, specific resistance 17.2 ⁇ ⁇ mm) is used.
  • the resistance value of the Cu core of one terminal is about 0.048 m ⁇ , and considering the solder coating, the resistance value obtained by connecting the first and second external connection terminals 132 and 134 in series is as low as less than 0.096 m ⁇ . It can be seen that the overall rating of the short-circuit element 130 can be improved.
  • the short-circuit element 130 obtains the total resistance value of the entire element from the resistance value between the first and second external connection terminals 132 and 134 at the time of the short circuit, and the total resistance value and the known first and second values. From the difference from the combined resistance of the external connection terminals 132 and 134, the conduction resistance between the first and second external connection electrodes 131 and 133 at the time of a short circuit can be obtained. In addition, the short-circuit element 130 measures the resistance between the first and second external connection electrodes 131 and 133 at the time of the short-circuit, and the first and second external elements are calculated based on the difference from the total resistance value of the entire element at the time of the short-circuit. The combined resistance of the connection terminals 132 and 134 can be obtained.
  • the short-circuit element 130 is widely provided by forming the first and second external connection electrodes 131 and 133 in a rectangular shape or the like, and the first and second external connection terminals 132 and 134 are provided.
  • the conduction resistance may be lowered by providing a plurality.
  • the short-circuit element 130 reduces the conduction resistance by providing the first and second external connection terminals 132 and 134 having large diameters on the widely provided first and second external connection electrodes 131 and 133. May be.
  • first and second external connection terminals 132 and 134 may be formed by providing the low melting point metal layers 132b and 134b on the surfaces of the high melting point metals 132a and 134a serving as the core.
  • the metal constituting the low melting point metal layers 132b and 134b solder such as Pb-free solder containing Sn as a main component can be preferably used.
  • the high melting point metals 132a and 134a Cu or Ag is used as a main component.
  • An alloy to be used can be preferably used.
  • the reflow temperature exceeds the melting temperature of the low melting point metal layers 132b and 134b when the short circuit element 130 is reflow mounted. Even if the metal is melted, it can be prevented from melting as the first and second external connection terminals 132 and 134.
  • the first and second external connection terminals 132 and 134 can be connected to the first and second external connection electrodes 131 and 133 using a low melting point metal constituting the outer layer.
  • the first and second external connection terminals 132 and 134 can be formed by forming a low melting point metal on the high melting point metals 132a and 134a by using a plating technique, and other well-known lamination techniques and films. It can also be formed by using a forming technique.
  • the first and second external connection terminals 132 and 134 are formed by using a conductive plating layer or a conductive layer formed by applying a conductive paste, in addition to using metal bumps or metal posts. May be.
  • first and second external connection terminals 132 and 134 are provided in advance on the mounting object side such as a substrate on which the short-circuit element 130 is mounted, and in the mounting body on which the short-circuit element is mounted,
  • the external connection electrodes 131 and 133 or the first and second electrodes 104 and 105 may be connected.
  • FIG. 30 is a diagram showing a circuit configuration of a battery pack 140 in which a lithium ion battery used in various electronic devices such as cars and electric tools is built.
  • the battery pack 140 ensures a high voltage and a large current by connecting a plurality of battery cells 141 in series on the current path.
  • each battery cell 141 is connected to a protection element 142 that interrupts the current path when an abnormality such as overcharge or overdischarge of the battery cell 141 occurs.
  • the protective element 142 is formed on the insulating substrate 144, the heating resistor 146 laminated on the insulating substrate 144 and covered with the insulating member 145, and both ends of the insulating substrate 144. Electrodes 147 (A1) and 147 (A2), a heating element extraction electrode 148 laminated on the insulating member 145 so as to overlap the heating resistor 146, and electrodes 147 (A1) and 147 (A2) at both ends. And a soluble conductor 149 having a central portion connected to the heating element extraction electrode 148.
  • the insulating substrate 144 is formed in a substantially rectangular shape using the same material as the insulating substrate 102 described above.
  • the heating resistor 146 is formed by the same manufacturing method using the same material as the first and second heating resistors 121 and 122 described above.
  • an insulating member 145 is disposed so as to cover the heating resistor 146, and a heating element extraction electrode 148 is disposed so as to face the heating resistor 146 through the insulating member 145.
  • an insulating member 145 may be laminated between the heating resistor 146 and the insulating substrate 144.
  • the soluble conductor 149 may be the same as the first and second soluble conductors 108 and 109 described above.
  • the protective element 142 similarly to the short-circuit element 101, flux may be applied to almost the entire surface of the soluble conductor 149 in order to prevent the soluble conductor 149 from being oxidized. Further, the protective element 142 may have a cover member placed on the insulating substrate 144 in order to protect the inside.
  • the protective element 142 as described above has a circuit configuration as shown in FIG. That is, the protection element 142 generates heat by melting the soluble conductor 149 by energizing the soluble conductor 149 connected in series via the heating element extraction electrode 148 and the connection point of the soluble conductor 149 to generate heat.
  • the circuit configuration includes a resistor 146. Of the two electrodes 147 of the protective element 142, one is connected to A1, and the other is connected to A2. Further, the heating element extraction electrode 148 and the heating element electrode 150 connected thereto are connected to P1, and the other heating element electrode 150 is connected to P2.
  • Battery pack 140 has a plurality of battery units 184 connected in series.
  • Each battery unit 184 includes a battery cell 141, a protection element 142, a short-circuit element 101, a first current control element 181 that controls the operation of the protection element 142, and a second and second control that controls the operation of the short-circuit element 101.
  • the battery pack 140 detects the voltage of the battery unit 184, the charge / discharge control circuit 155 that controls the charge / discharge of the battery unit 184, and the battery cell 141 of each battery unit 184, and the protection element 142 and the short-circuit element 101. And a detection circuit 156 that outputs an abnormal signal to the first to third current control elements 181 to 183 that control the operation of the first current control element.
  • the electrode 147 (A1) of the protection element 142 is connected in series with the battery cell 141, and the electrode 147 (A2) is connected to the charge / discharge current path of the battery pack 140.
  • the second electrode terminal portion 105a of the short-circuit element 101 is connected to the open end of the protective element 142 via the protective resistor 154, and the first electrode terminal portion 104a is connected to the open end of the battery cell 141.
  • the protection element 142 and the battery cell 141 and the short-circuit element 101 are connected in parallel.
  • the heating element electrode 150 (P2) of the protection element 142 is connected to the first current control element 181, and the first resistor terminal portion 121a of the short-circuit element 101 is the second current control element 182. And the second resistor terminal portion 122a of the short-circuit element 101 is connected to the third current control element 183.
  • the detection circuit 156 is connected to each battery cell 141, detects the voltage value of each battery cell 141, and supplies each voltage value to the control unit 159 of the charge / discharge control circuit 155. Further, when the battery cell 141 becomes an overcharge voltage or an overdischarge voltage, the detection circuit 156 sends an abnormal signal to the first to third current control elements 181 to 183 of the battery unit 184 having the battery cell 141. Output.
  • the first to third current control elements 181 to 183 are constituted by, for example, FETs, and the voltage value of the battery cell 141 is set to a voltage exceeding a predetermined overdischarge or overcharge state by a detection signal output from the detection circuit 156. Then, the protection element 142 and the short-circuit element 101 are operated to cut off the charging / discharging current path of the battery unit 184 regardless of the switching operation of the third and fourth current control elements 157 and 158 and the short-circuit element 101. Is controlled to form a bypass current path that bypasses the battery unit 184.
  • an abnormality signal is output from the detection circuit 156 to the first current control element 181, and the heating resistor 146 of the protection element 142 is heated.
  • the protection element 142 heats and melts the fusible conductor 149 with the heating resistor 146, thereby blocking between the electrodes 147 (A1) and 147 (A2).
  • the battery unit 184 having the abnormal battery cell 141 can be cut off from the charge / discharge current path of the battery pack 140.
  • power supply to the heating resistor 146 is stopped when the fusible conductor 149 is melted.
  • the detection circuit 156 outputs an abnormal signal to the second current control element 182 of the battery unit 184, and the first heating resistor 121 of the short-circuit element 101 also generates heat.
  • the molten conductor aggregates on the first electrode 104 by heating and melting the first soluble conductor 108 by the first heating resistor 121.
  • the battery pack 140 outputs an abnormal signal to the third current control element 183 following the output to the second current control element 182 to cause the second heating resistor 122 to generate heat.
  • the molten conductor aggregates on the second electrode 104 by heating and melting the second soluble conductor 109 by the second heating resistor 122.
  • the battery pack 140 has a bypass current path in which the first electrode terminal portion 104a and the second electrode terminal portion 105a of the switch 120 are short-circuited to bypass the battery unit 184. Can be formed.
  • the first and second fusible conductors 108 and 109 are blown, whereby the power supply to the first and second heating resistors 121 and 122 is stopped.
  • the protective resistor 154 has substantially the same resistance value as the internal resistance of the battery cell 141, and thus can have the same capacity as that in the normal state on the bypass current path.
  • FIG. 33 is a plan view of the short-circuit element 160 in which the protective resistor 161 is formed on the insulating substrate 102.
  • the short-circuit element 160 includes a protective resistor 161 connected to the second electrode 105, and a second electrode terminal portion 105 a is formed via the protective resistor 161.
  • the protective resistor 161 can be formed simultaneously by the same process using the same material as the first and second heating resistors 121 and 122 described above.
  • FIG. 34A and 34B are diagrams showing the circuit configuration of the short-circuit element 160.
  • FIG. The circuit configuration of the short-circuit element 160 is such that the first electrode terminal portion 104a and the second electrode terminal portion 105a are connected via the protective resistor 161 when the switch 120 is short-circuited.
  • the circuit configuration of the short-circuit element 160 is such that the first and second fusible conductors (fuses) 108 and 109 and the first and second fusible conductors 108 and 109 connected to one end of the first and second fusible conductors 108 and 109.
  • the switch 120 connected to the other end to which the first and second heat generating resistors 121 and 122 are not connected, and the switch And a protective resistor 161 connected to at least one of the 120 terminals, and the switch 120 is short-circuited in conjunction with the fusing of the first and second fusible conductors 108 and 109.
  • the external terminal 112 is provided on the back surface of the insulating substrate 102 and the first electrode terminal portion 104a and the second electrode terminal portion 105a are connected to the external terminal 112 through a through hole.
  • the first external connection electrode 131 that is continuous with the first electrode 104, the first electrode on the surface of the insulating substrate 102 on which the first and second electrodes 104 and 105 are formed.
  • a second external connection electrode 133 continuous with the second electrode 105 and a second external connection terminal 134 may be formed via the external connection terminal 132, the protective resistor 161.
  • FIG. 35 is a diagram showing a circuit configuration of a battery pack 170 in which the short-circuit element 160 is incorporated.
  • the battery pack 170 has the same configuration as the battery pack 140 described above except that the short-circuit element 160 is used. That is, the circuit configuration of the battery pack 170 is connected to the above-described short-circuit element 160, the battery cell 141, and the current path of the battery cell 141, and the electric current is supplied to the battery cell 141 by an electric signal when the battery cell 141 is abnormal.
  • a protection element 142 that shuts off, a detection circuit 156 that detects abnormality of the battery cell 141 and outputs an abnormality signal, and first to third current control elements 181 and 182 that operate in response to the abnormality signal of the detection circuit 156, 183, and both ends of the battery cell 141 and the protection element 142 are connected in parallel with the connection terminal 104 a of the first and second fusible conductors 108 and 109 of the switch 120 and the open terminal 105 a of the protection resistor 161.
  • the first and second resistor terminal portions 121a and 122a of the first and second heating resistors 121 and 122 are connected to the second and third current control elements.
  • the heating element electrode 150 (P2) which is connected to 182 and 183 and serves as an input terminal for the electrical signal of the protection element 142 is connected to the first control element 181.
  • an abnormal signal is output from the detection circuit 156.
  • the first to third current control elements 181, 182, and 183 operate to interrupt the current path of the battery cell 141 by the protection element 142 and to blow the first and second fusible conductors 108 and 109.
  • the interlocked switch 120 is short-circuited to form a bypass current path.
  • the protective resistance 161 of the short-circuit element 160 provided in each battery unit 184 has substantially the same resistance value as the internal resistance of the battery cell 141 of the battery unit 184.
  • a bypass current path that bypasses the battery unit 184 can be formed and charged by the remaining normal battery units 184.
  • the discharge function can be maintained.
  • the battery pack 170 can have the same capacity as that in the normal state on the bypass current path because the protective resistor 161 has substantially the same resistance value as the internal resistance of the battery cell 141.
  • the battery pack 190 incorporating the short-circuit element 160 shown in FIG. 36 is connected to the current control element connected to the protection element 142 and the first resistor terminal portion 121a among the first to third current control elements.
  • the current control element to be shared is shared. That is, as shown in FIG. 36, in the battery pack 190, the heating element electrode 150 (P2) of the protection element 142 and the first resistor terminal portion 121a of the short-circuit element 160 are connected to the first current control element 191.
  • the second resistor terminal portion 122a of the short-circuit element 160 is connected to the second current control element 192.
  • the first and second current control elements 191 and 192 are connected to the detection circuit 156, and when the overcharge voltage or overdischarge voltage of the battery cell 141 is detected by the detection circuit 156, an abnormal signal is output.
  • the first and second current control elements 191 and 192 are constituted by, for example, FETs, and the voltage value of the battery cell 141 exceeds a predetermined overdischarge or overcharge state by an abnormal signal output from the detection circuit 156. When this happens, the protection element 142 and the short-circuit element 160 are operated.
  • the detection circuit 156 first outputs an abnormal signal to the first current control element 191, and then outputs an abnormal signal to the second current control element 192.
  • the heating resistor 146 of the protection element 142 and the first heating resistor 121 of the short circuit element 160 are energized to generate heat.
  • the battery pack 190 cuts off the charging / discharging current path of the battery unit 184 when the soluble conductor 149 of the protection element 142 is melted, and the first soluble conductor 108 of the short-circuit element 160 is melted.
  • the second current control element 192 receives an abnormal signal
  • the second heating resistor 122 of the short-circuit element 160 is energized to generate heat.
  • the battery pack 190 is melted in the second fusible conductor 109 of the short-circuiting element 160 and is coupled to the first fusible conductor 108 that has been melted first. Aggregate on 105. Accordingly, the short-circuit element 160 short-circuits the switch 120 and forms a bypass current path that bypasses the battery unit 184. According to such a battery pack 190, the number of current control elements can be reduced, and the circuit configuration can be simplified.
  • FIG. 37A is a plan view of the short-circuit element 201
  • FIG. 37B is a cross-sectional view of the short-circuit element 201.
  • the short-circuit element 201 includes an insulating substrate 202, a first heating resistor 221 and a second heating resistor 222 provided on the insulating substrate 202, and a first electrode provided adjacent to the insulating substrate 202.
  • a current path is formed by being provided between the fifth electrode 231 (A2) and the first and third electrodes 204 and 206, and the first and second electrodes are heated by the first heating resistor 221.
  • Current flow between the three electrodes 204 and 206 A first fusible conductor 208, a second electrode 205 (A 1), a fourth electrode 207 (P 1), and a fifth electrode 231 (A 2).
  • the short-circuit element 201 is provided with a cover member 210 that protects the inside on the insulating substrate 202.
  • the insulating substrate 202 is formed in a substantially square shape using an insulating member such as alumina, glass ceramics, mullite, zirconia, and the like.
  • the insulating substrate 202 may be made of a material used for a printed wiring board such as a glass epoxy board or a phenol board, but it is necessary to pay attention to the temperature at the time of blowing the fuse.
  • the insulating substrate 202 has an external terminal 212 formed on the back surface.
  • the first and second heat generating resistors 221 and 222 are conductive members that have a relatively high resistance value and generate heat when energized, and are made of, for example, W, Mo, Ru, or the like. These alloys, compositions, or compound powders are mixed with a resin binder or the like to form a paste on the insulating substrate 2 by patterning using a screen printing technique and firing.
  • first and second heating resistors 221 and 222 are covered with the insulating layer 211 on the insulating substrate 202.
  • First and third electrodes 204 and 206 are formed on the insulating layer 211 covering the first heating resistor 221, and the second electrode 204 and 206 are formed on the insulating layer 211 covering the second heating resistor 222.
  • Fourth and fifth electrodes 205, 207, and 231 are formed.
  • the first electrode 204 is formed adjacent to the second electrode 205 on one side and insulated.
  • a third electrode 206 is formed on the other side of the first electrode 204.
  • the first electrode 204 and the third electrode 206 are brought into conduction when the first fusible conductor 208 is connected to form a current path of the short-circuit element 201.
  • the first electrode 204 is connected to the first electrode terminal portion 204 a facing the side surface of the insulating substrate 202.
  • the first electrode terminal portion 204a is connected to an external terminal 212 provided on the back surface of the insulating substrate 202 through a through hole.
  • the third electrode 206 is connected to the first heating resistor 221 via the first heating element lead-out electrode 223 provided on the insulating substrate 202 or the insulating layer 211.
  • the first heating resistor 221 is connected to the first resistor terminal portion 221 a facing the side edge of the insulating substrate 202 via the first heating element lead-out electrode 223.
  • the first resistor terminal portion 221a is connected to an external terminal 212 provided on the back surface of the insulating substrate 202 through a through hole.
  • the fourth electrode 207 (P1) is formed on the other side opposite to the one side adjacent to the first electrode 204 of the second electrode 205 (A1).
  • a fifth electrode 231 (A2) is formed on the other side of the fourth electrode 207 (P1) opposite to the one side adjacent to the second electrode 205 (A1).
  • the second electrode 205 (A1), the fourth electrode 207 (P1), and the fifth electrode 231 (A2) are connected to the second soluble conductor 209.
  • the second electrode 205 (A1) is connected to the second electrode terminal portion 205a facing the side surface of the insulating substrate 202.
  • the second electrode terminal portion 205a is connected to an external terminal 212 provided on the back surface of the insulating substrate 202 through a through hole.
  • the fourth electrode 207 (P1) is connected to the second heating resistor 222 via the second heating element extraction electrode 224 provided on the insulating substrate 202 or the insulating layer 211.
  • the second heating resistor 222 is connected to the second resistor terminal portion 222a (P2) facing the side edge of the insulating substrate 202 via the second heating element lead-out electrode 224.
  • the second resistor terminal portion 222a (P2) is connected to an external terminal 212 provided on the back surface of the insulating substrate 202 through a through hole.
  • the fifth electrode 231 (A2) is connected to the fifth electrode terminal portion 231a facing the side surface of the insulating substrate 202.
  • the fifth electrode terminal portion 231a is connected to an external terminal 212 provided on the back surface of the insulating substrate 202 through a through hole.
  • the first to fifth electrodes 204, 205, 206, 207, 231 can be formed using a general electrode material such as Cu or Ag, but at least the first and second electrodes 204, A coating such as Ni / Au plating, Ni / Pd plating, or Ni / Pd / Au plating is preferably formed on the surface of 205 by a known plating process. Thereby, the oxidation of the first and second electrodes 204 and 205 can be prevented, and the molten conductor can be reliably held.
  • the short-circuit element 201 when the short-circuit element 201 is mounted by reflow soldering, a solder that connects the first and second soluble conductors 208 and 209 or a low melting point metal that forms an outer layer of the first and second soluble conductors 208 and 209 is used. By melting, the first and second electrodes 204 and 205 can be prevented from being melted (soldered) and cut.
  • the first and second fusible conductors 208 and 209 are made of a low melting point metal that is quickly melted by the heat generated by the first and second heating resistors 221 and 222, for example, Pb-free solder mainly composed of Sn. Can be suitably used.
  • first and second soluble conductors 208 and 209 may contain a low melting point metal and a high melting point metal.
  • the low melting point metal it is preferable to use solder such as Pb-free solder, and as the high melting point metal, it is preferable to use Ag, Cu or an alloy containing these as a main component.
  • the high melting point metal and the low melting point metal even when the reflow temperature exceeds the melting temperature of the low melting point metal layer and the low melting point metal melts, The second soluble conductors 208 and 209 do not melt.
  • the first and second fusible conductors 208 and 209 may be formed by depositing a low melting point metal on a high melting point metal using a plating technique, and other well-known lamination techniques and film forming techniques may be used. You may form by using.
  • the first and second fusible conductors 208 and 209 are made of a low melting point metal constituting the outer layer, and the first and third electrodes 204 and 206 or the second, fourth and fifth electrodes 205 are used. , 207, 231 can be soldered.
  • the first and second soluble conductors 208 and 209 may have an inner layer made of a low melting point metal and an outer layer made of a high melting point metal.
  • an inner layer made of a low melting point metal By using a soluble conductor in which the entire surface of the inner low melting point metal layer is covered with the outer high melting point metal layer, even when using a low melting point metal having a melting point lower than the reflow temperature, the inner layer has a low Outflow of the melting point metal to the outside can be suppressed. Further, when the inner layer low melting point metal melts, the outer layer high melting point metal is also eroded (soldered) and can be quickly melted.
  • first and second soluble conductors 208 and 209 may have a covering structure in which the inner layer is made of a high melting point metal and the outer layer is made of a low melting point metal.
  • the inner layer is made of a high melting point metal
  • the outer layer is made of a low melting point metal.
  • first and second soluble conductors 208 and 209 may have a laminated structure in which a low melting point metal layer and a high melting point metal layer are laminated. Moreover, it is good also as a multilayered structure of four or more layers by which the low melting metal layer and the high melting metal layer were laminated
  • the first and second soluble conductors 208 and 209 may be composed of a high melting point metal having a large number of openings and a low melting point metal inserted into the openings.
  • the area of the refractory metal layer in contact with the molten low melting point metal layer increases, so that the low melting point metal layer can erode the refractory metal layer in a shorter time. Therefore, the soluble conductor can be blown out more quickly and reliably.
  • the first and second soluble conductors 208 and 209 have a volume of the low melting point metal larger than that of the high melting point metal. Thereby, the 1st, 2nd soluble conductors 208 and 209 can perform fusing in a short time by the corrosion of a refractory metal layer effectively.
  • the first and second soluble conductors 208 and 209 are improved.
  • a flux 215 is applied on the molten conductors 208 and 209.
  • the inside of the short-circuit element 201 is protected by covering the insulating substrate 202 with the cover member 210.
  • the cover member 210 has a side wall 216 that forms the side surface of the short-circuit element 201 and a top surface portion 217 that forms the upper surface of the short-circuit element 201, and the short-circuit element 201 is connected to the side wall 216 on the insulating substrate 202. It becomes a lid that closes the inside of the.
  • the cover member 210 is formed using an insulating member such as a thermoplastic, ceramic, glass epoxy substrate, or the like.
  • the cover member 210 may have a cover portion electrode 218 formed on the inner surface side of the top surface portion 217.
  • the cover part electrode 218 is formed at a position overlapping the first and second electrodes 204 and 205.
  • the cover electrode 218 has the first and second electrodes 204, When the molten conductor agglomerated on 205 contacts and spreads wet, the allowable amount for holding the molten conductor can be increased.
  • the short circuit element 201 as described above has a circuit configuration as shown in FIG. That is, in the short-circuit element 201, the first electrode 204 and the second electrode 205 are normally insulated, and the first and second fusible conductors are generated by the heat generated by the first and second heating resistors 221 and 222. When 208 and 209 are melted, the switch 220 is configured to be short-circuited through the molten conductor.
  • the first electrode terminal portion 204a and the second electrode terminal portion 205a constitute both terminals of the switch 220.
  • the first soluble conductor 208 is connected to the first heating resistor 221 via the third electrode 206 and the first heating element lead-out electrode 223.
  • the second soluble conductor 209 is connected to the second heating resistor 222 and the second resistor terminal portion 222a (P2) through the fourth electrode 207 (P1) and the second heating element lead-out electrode 224.
  • the second electrode 205 (A1), the fourth electrode 207 (P1), and the fifth electrode 231 (A2) to which the second soluble conductor 209 is connected function as a protective element.
  • the short-circuit element 201 When the short-circuit element 201 is energized from the second resistor terminal portion 222a (P2), as shown in FIG. 39, the second heating resistor 222 generates heat, and the second soluble conductor 209 is connected. By melting, the current path extending between the second electrode 205 (A1) and the fifth electrode 231 (A2) connected via the fourth electrode 207 (P1) is cut off. Further, when the short-circuit element 201 is energized from the first resistor terminal portion 221a, the first heating resistor 221 generates heat and melts the first soluble conductor 208. As a result, as shown in FIG.
  • the short-circuit element 201 is formed by combining the molten conductors of the first and second soluble conductors 208 and 209 that are aggregated into the first electrode 204 and the second electrode 205.
  • the insulated first electrode 204 and second electrode 205 can be short-circuited, that is, the switch 220 can be short-circuited.
  • the energization of the first heating resistor 221 is stopped because the first fusible conductor 208 is cut off and the first and third electrodes 204 and 206 are cut off, and the second heat generation is stopped. Since the current to the resistor 222 is cut off between the second and fourth electrodes 205 and 207 and between the fourth and fifth electrodes 207 and 231 when the second soluble conductor 209 is melted, Stopped.
  • the second soluble conductor 209 is melted prior to the first soluble conductor 208.
  • the first heating resistor 221 and the second heating resistor 222 are separately heated, so that the second heating resistor 222 is first heated as the energization timing, and thereafter
  • the first heating resistor 221 By causing the first heating resistor 221 to generate heat, as shown in FIG. 39, the second soluble conductor 209 is easily melted ahead of the first soluble conductor 208, as shown in FIG.
  • the molten conductors of the first and second fusible conductors 208 and 209 are surely aggregated and bonded onto the first and second electrodes 204 and 205, and the first and second electrodes 204 and 205 are short-circuited. Can be made.
  • the short-circuit element 201 forms the second fusible conductor 209 narrower than the first fusible conductor 208 by forming the second fusible conductor 209 narrower than the first fusible conductor 208. It may be melted first.
  • the fusing time can be shortened, so that the second soluble conductor 209 can be melted prior to the first soluble conductor 208. it can.
  • the area of the first electrode 204 is preferably larger than that of the third electrode 206, and the area of the second electrode 205 is preferably larger than those of the fourth and fifth electrodes 207 and 231. . Since the holding amount of the molten conductor increases in proportion to the electrode area, the areas of the first and second electrodes 204 and 205 are formed wider than those of the third, fourth, and fifth electrodes 206, 207, and 231. As a result, more molten conductors can be aggregated on the first and second electrodes 204 and 205, and the first and second electrodes 204 and 205 can be short-circuited reliably.
  • the short-circuit element 201 does not necessarily have to cover the first and second heating resistors 221 and 222 with the insulating layer 211.
  • the first and second heating resistors 221 and 221 222 may be installed inside the insulating substrate 202.
  • the first and second heating resistors 221 and 222 can be heated in the same manner as when the insulating layer 211 such as a glass layer is interposed. it can.
  • the first and second heating resistors 221 and 222 are formed on the surface on which the first to fifth electrodes 204, 205, 206, 207, and 231 of the insulating substrate 202 are formed. It may be installed on the back side opposite to.
  • the first and second heat generating resistors 221 and 222 can be formed by a simpler process than forming in the insulating substrate 202.
  • the insulating layer 211 is formed on the first and second heating resistors 221 and 222 in terms of protecting the resistor and ensuring insulation during mounting.
  • the first and second heating resistors 221 and 222 are formed on the surface on which the first to fifth electrodes 204, 205, 206, 207, and 231 of the insulating substrate 2 are formed. It may be installed on top.
  • the first and second heat generating resistors 221 and 222 can be formed by a simpler process than forming in the insulating substrate 202. In this case as well, it is desirable to form the insulating layer 211 on the first and second heating resistors 221 and 222.
  • a configuration may be employed in which a protective resistor connected to either the first electrode 204 or the second electrode 205 is provided.
  • the protective resistance is a resistance value corresponding to the internal resistance of the electronic component connected to the short circuit element, and is smaller than the resistance value of the first or second heating resistor 221, 222. That is, when the electronic component is operating normally, current does not flow to the short-circuit element side but flows to the electronic component side.
  • the short-circuit element to which the present invention is applied is not limited to the provision of the external terminal 212 continuous with the first and second electrodes 204 and 205 through the through-holes on the back surface of the insulating substrate 202, as shown in FIG.
  • the first external connection electrode 234 continuous with the first electrode 204, the first electrode 204, 205 are formed on the surface of the insulating substrate 202 where the first and second electrodes 204, 205 are formed.
  • One or a plurality of second external connection terminals 237 may be formed.
  • the first and second external connection electrodes 234 and 236 are electrodes that connect the short-circuit element 233 and the circuit of the electronic device in which the short-circuit element 233 is incorporated, and the first external connection electrode 234 is the same as the first electrode 204.
  • the second external connection electrode 236 is continuous with the second electrode 205.
  • the first and second external connection electrodes 234 and 236 are formed using a general electrode material such as Cu or Ag, and are the same surface as the formation surface of the first and second electrodes 204 and 205 of the insulating substrate 202. Is formed. That is, in the short-circuit element 233 shown in FIG. 44, the surface on which the first and second fusible conductors 208 and 209 are provided is the mounting surface. Note that the first and second external connection electrodes 234 and 236 can be formed simultaneously with the first and second electrodes 204 and 205.
  • the first external connection terminal 235 is provided on the first external connection electrode 234.
  • a second external connection terminal 237 is provided on the second external connection electrode 236.
  • the first and second external connection terminals 235 and 237 are connection terminals for mounting on an electronic device, and are formed using, for example, metal bumps or metal posts. Further, as shown in FIG. 44A, the first and second external connection terminals 235 and 237 have a height protruding from the cover member 210 provided on the insulating substrate 202, and the short-circuit element 233. It can be mounted on the substrate side that is the mounting object.
  • the first heating resistor 221 of the short-circuit element 233 is formed with a first resistor connection terminal 221b via the first heating element lead-out electrode 223 and the first resistor terminal portion 221a.
  • the second heating resistor 222 of the short-circuit element 233 has a second resistor connection terminal 222b formed via the second heating element lead-out electrode 224 and the second resistor terminal portion 222a.
  • the fifth electrode 231 has a third external connection terminal 231b formed on the fifth electrode terminal portion 231a.
  • the first and second resistor connection terminals 221b and 222b and the third external connection terminal 231b are formed using metal bumps or metal posts, similarly to the first and second external connection terminals 235 and 237. It protrudes upward through the insulating layer 211.
  • the short-circuit element 233 is provided with the external terminal 212 on the back surface of the insulating substrate 202 like the short-circuit element 201 and connects the first and second electrodes 204 and 205 and the external terminal 212 through a through hole.
  • the first and second external connection terminals 235 and 237 are formed on the same surface as the first and second electrodes 204 and 205 via the first and second external connection electrodes 234 and 236. Yes.
  • the short-circuit element 233 is connected between the first and second external connection electrodes 234 and 236 when the first electrode 204 and the second electrode 205 are short-circuited.
  • the combined resistance of the first external connection terminal 235 and the second external connection terminal 237 is configured to be lower than the resistance.
  • the short-circuit element 233 can improve the rating when the first and second electrodes 204 and 205 are short-circuited to form a bypass current path, and can cope with a large current. That is, in high current applications such as lithium ion secondary batteries used as power sources such as HEV and EV, further improvement of the rating of the short-circuit element is required.
  • the conduction resistance between the first and second external connection electrodes 234 and 236 short-circuited by the fusible conductor can be sufficiently lowered to meet the rating improvement (for example, less than 0.4 m ⁇ ).
  • the first and second electrodes 204 are provided.
  • the first and second electrodes 204 have a high conduction resistance (for example, 0.5 to 1.0 m ⁇ ), and even if a conductor is filled in the through hole, there is a limit to lowering the conduction resistance of the entire short-circuit element.
  • the short-circuit element 233 is provided with external connection terminals 235 and 237 on the same surface as the first and second electrodes 204 and 205.
  • the external connection terminals 235 and 237 are provided on the external connection electrodes 234 and 236, and a terminal having a high degree of freedom in shape and size and having a low conduction resistance can be easily provided.
  • the short-circuit element 233 has a first external connection rather than a conduction resistance between the first and second external connection electrodes 234 and 236 when the first electrode 204 and the second electrode 205 are short-circuited.
  • the combined resistance of the terminal 235 and the second external connection terminal 237 is configured to be low.
  • the conduction resistance ahead of the first and second external connection electrodes 234 and 236, which is high in the configuration of the short-circuit element 201, can be easily lowered, and the rating is dramatically improved. Can be achieved.
  • the first and second external connection terminals 232 and 234 can be configured using, for example, metal bumps or metal posts made of Pb-free solder whose main component is Sn.
  • the shape of the metal bump or the metal post is not limited.
  • the resistance values of the first and second external connection terminals 235 and 237 can be obtained from the material, shape, and size. As an example, when a rectangular parallelepiped metal post (Cu core: 0.6 mm ⁇ 0.6 mm, cross-sectional area 0.36 mm 2, height 1 mm, specific resistance 17.2 ⁇ ⁇ mm) is used.
  • the resistance value of the Cu core of one terminal is about 0.048 m ⁇ , and the resistance value obtained by connecting the first and second external connection terminals 235 and 237 in series is as low as less than 0.096 m ⁇ in consideration of the solder coating. It can be seen that the overall rating of the short-circuit element 233 can be improved.
  • the short-circuit element 233 obtains the total resistance value of the entire element from the resistance value between the first and second external connection terminals 235 and 237 at the time of the short-circuit, and the total resistance value and the known first and second values. From the difference between the combined resistance of the external connection terminals 235 and 237, the conduction resistance between the first and second external connection electrodes 234 and 236 at the time of short circuit can be obtained. The short-circuit element 233 measures the resistance between the first and second external connection electrodes 234 and 236 at the time of short-circuit, and the first and second external elements are calculated from the difference from the total resistance value of the entire element at the time of short-circuit. The combined resistance of the connection terminals 235 and 237 can be obtained.
  • the short-circuit element 233 is provided wider by forming the first and second external connection electrodes 234 and 236 in a rectangular shape, and the first and second external connection terminals 235 and 237 are provided.
  • the conduction resistance may be lowered by providing a plurality.
  • the short-circuit element 233 reduces the conduction resistance by providing the first and second external connection terminals 235 and 237 having large diameters on the first and second external connection electrodes 234 and 236 that are widely provided. May be.
  • first and second external connection terminals 235 and 237 may be formed by providing low melting point metal layers 235b and 237b on the surfaces of the high melting point metals 235a and 237a serving as cores.
  • solder such as Pb-free solder containing Sn as a main component can be suitably used.
  • An alloy to be used can be preferably used.
  • the reflow temperature exceeds the melting temperature of the low melting point metal layers 235b and 237b, Even when the metal is melted, it can be prevented that the first and second external connection terminals 235 and 237 are melted.
  • the first and second external connection terminals 235 and 237 can be connected to the first and second external connection electrodes 234 and 236 using a low melting point metal constituting the outer layer.
  • the first and second external connection terminals 235 and 237 can be formed by forming a low melting point metal on the high melting point metal 235a and 237a by using a plating technique, and other well-known lamination techniques and films. It can also be formed by using a forming technique.
  • the first and second external connection terminals 235 and 237 are formed by using a conductive plating layer or a conductive layer formed by applying a conductive paste, in addition to using metal bumps or metal posts. May be.
  • first and second external connection terminals 235 and 237 are provided in advance on the mounting object side such as a substrate on which the short-circuit element 233 is mounted.
  • the external connection electrodes 234 and 236 or the first and second electrodes 204 and 205 may be connected.
  • FIG. 46 is a diagram showing a circuit configuration of a battery pack 240 in which a lithium ion battery used in various electronic devices such as cars and electric tools is built.
  • the battery pack 240 includes a battery cell 241, a short-circuit element 201, first and second current control elements 261 and 262 that control the operation of the short-circuit element 201, and a protective resistor 254. And a plurality of battery units 263 connected in series.
  • the battery pack 240 detects the voltage of the battery unit 263, the charge / discharge control circuit 255 that controls the charge / discharge of the battery unit 263, and the battery cell 241 of each battery unit 263, and the operation of the short-circuit element 201. And a detection circuit 256 that outputs an abnormal signal to the first and second current control elements 261 and 262 to be controlled.
  • the charge / discharge control circuit 255 controls the operation of the third and fourth current control elements 257 and 258 connected in series to the current path flowing from the battery unit 263 to the charging device, and the operation of these current control elements 257 and 258. Part 259.
  • the second electrode terminal portion 205a of the second electrode 205 (A1) of the short-circuit element 201 is connected to the charge / discharge current path of the battery pack 240, and the fifth electrode 231 (A2) By connecting the electrode terminal portion 231 a to the battery cell 41, the short-circuit element 201 is connected in series with the battery cell 241.
  • the second heating resistor 222 is connected to the first current control element 261 via the second resistor terminal portion 222a (P2).
  • the first electrode terminal portion 204a of the first electrode 204 is connected to the open end of the battery cell 241 via the protective resistor 254, so that the switch 220 is charged / discharged by the battery cell 241. Bypassed from the route.
  • the first heating resistor 221 is connected to the second current control element 262 via the first resistor terminal portion 221a.
  • the detection circuit 256 is connected to each battery cell 241, detects the voltage value of each battery cell 241, and when the battery cell 241 becomes an overcharge voltage or an overdischarge voltage, the battery unit having the battery cell 241. An abnormal signal is output to the first and second current control elements 261 and 262 of H.263.
  • the first and second current control elements 261 and 262 are configured by, for example, FETs, and the voltage value of the battery cell 241 exceeds a predetermined overdischarge or overcharge state by a detection signal output from the detection circuit 256.
  • the short-circuit element 201 is operated to cut off the charging / discharging current path of the battery unit 263 regardless of the switching operation of the third and fourth current control elements 257 and 258, and the switch 220 of the short-circuit element 201 is turned off. Control is performed so as to form a bypass current path that short-circuits and bypasses the battery unit 263.
  • the short-circuit element 201 is formed by heating and melting the second fusible conductor 209 with the second heating resistor 222 to thereby form the second electrode 205 (A1) and the fourth electrode. Between the first electrode 207 (P1) and between the fourth electrode 207 (P1) and the fifth electrode 231 (A2). Thus, as shown in FIG. 46B, the battery unit 263 having the abnormal battery cell 241 can be blocked from the charge / discharge current path of the battery pack 240. Note that power supply to the second heating resistor 222 is stopped when the second fusible conductor 209 is melted.
  • the battery pack 240 causes the detection circuit 256 to output an abnormal signal to the second current control element 262 of the battery unit 263 with a slight delay from the first current control element 261, and the first heat generation of the short-circuit element 201.
  • the resistor 221 also generates heat.
  • the short-circuit element 201 is configured to heat and melt the first fusible conductor 208 by the first heating resistor 221, so that the first and second possible electrodes aggregated into the first electrode 204 and the second electrode 205.
  • the molten conductors 208 and 209 are joined together.
  • the short-circuit element 201 can form a bypass current path that bypasses the battery unit 263 as shown in FIG. Note that power supply to the first heating resistor 221 is stopped when the first fusible conductor 208 is melted.
  • the protective resistor 254 has almost the same resistance value as the internal resistance of the battery cell 241, so that it can have the same capacity as that in the normal state even on the bypass current path.
  • a bypass current path that bypasses the battery unit 263 can be formed and is charged by the remaining normal battery units 263.
  • the discharge function can be maintained.
  • FIG. 47 is a plan view of the short-circuit element 270 in which the protective resistor 271 is formed on the insulating substrate 202.
  • the short-circuit element 270 includes a protective resistor 271 connected to the first electrode 204, and a first electrode terminal portion 204a is formed via the protective resistor 271.
  • the protective resistor 271 can be formed simultaneously by the same process using the same material as the first and second heating resistors 221 and 222 described above.
  • FIG. 48 is a diagram showing a circuit configuration of the short-circuit element 270.
  • the circuit configuration of the short-circuit element 270 includes a first fusible conductor (fuse) 208, a first heating resistor 221 connected to one end of the first fusible conductor 208, and a first fusible conductor. 208, a switch 220 connected to the other end to which the first heating resistor 221 is not connected, and a protective resistor 271 connected to at least one of the terminals of the switch 220. This is a short circuit in conjunction with the melting of the fusible conductor 208.
  • an external terminal 212 is provided on the back surface of the insulating substrate 202 and the first electrode terminal portion 204a and the second electrode terminal portion 205a are connected to the external terminal 212 through a through hole.
  • a first external connection that is continuous with the first electrode 204 through the protective resistor 271 is formed on the surface of the insulating substrate 202 on which the first and second electrodes 204 and 205 are formed.
  • the electrode 234, the first external connection terminal 235, the second external connection electrode 236 continuous with the second electrode 205, and the second external connection terminal 237 may be formed.
  • FIG. 49 is a diagram showing a circuit configuration of a battery pack 280 in which the short-circuit element 270 is incorporated.
  • Battery pack 280 has the same configuration as battery pack 240 described above except that short-circuit element 270 is used instead of short-circuit element 201. That is, the battery pack 280 includes a plurality of battery units 273 including battery cells 241, short-circuit elements 270, and first and second current control elements 261 and 262 that control the operation of the short-circuit elements 270. A plurality of battery units 273 are connected in series.
  • the protective resistance 271 of the short-circuit element 270 provided in each battery unit has substantially the same resistance value as the internal resistance of the battery cell 241 of the battery unit 273.
  • a bypass current path that bypasses the battery unit 273 can be formed, and the remaining normal battery unit 273 can be charged.
  • the discharge function can be maintained.
  • the battery pack 280 can have the same current capacity as that in the normal state on the bypass current path because the protective resistance 271 has substantially the same resistance value as the internal resistance of the battery cell 241.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuses (AREA)

Abstract

Selon la présente invention, seules des cellules anormales ou seuls des composants électroniques anormaux agencés dans un dispositif électronique sont exclus et la résistance est réduite par formation d'un canal de déviation tout en conservant la fonctionnalité. Le dispositif électronique est composé de multiples cellules de batterie ou de composants électroniques. Un substrat isolant (2), une résistance (3) générant de la chaleur, une première (4) et une deuxième électrode (5), une troisième électrode (6) et un premier conducteur soluble (8) sont agencés. La résistance générant de la chaleur est agencée sur le substrat isolant (2). Les première et deuxième électrodes sont agencées de sorte à être adjacentes l'une par rapport à l'autre sur le substrat isolant (2). La troisième électrode est agencée de sorte à être adjacente à la première électrode (4) sur le substrat isolant (2) et est raccordée électriquement à la résistance générant de la chaleur. Le premier conducteur soluble est agencé entre la première électrode (4) et la troisième électrode (6) de sorte à configurer un canal de courant, et est chauffé par la résistance (3) générant de la chaleur de sorte à faire fondre le canal de courant entre la première électrode (4) et la troisième électrode (6). La première électrode (4) et la deuxième électrode (5) sont court-circuitées par le premier conducteur soluble (8). Le premier conducteur soluble est chauffé par la résistance (3) générant de la chaleur de sorte à être fondu et est aggloméré sur les première et deuxième électrodes (4, 5).
PCT/JP2014/052634 2013-02-05 2014-02-05 Élément de court-circuit et circuit qui utilise ce dernier Ceased WO2014123139A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201480007625.9A CN105027252B (zh) 2013-02-05 2014-02-05 短路元件及利用该短路元件的电路
KR1020157024285A KR102115999B1 (ko) 2013-02-05 2014-02-05 단락 소자, 및 이것을 사용한 회로
US14/819,328 US9953793B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same
US14/818,862 US9899179B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same
US14/819,061 US9953792B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP2013020756 2013-02-05
JP2013-020756 2013-02-05
JP2013-023171 2013-02-08
JP2013023171 2013-02-08
JP2013024643 2013-02-12
JP2013-024643 2013-02-12
JP2013-125077 2013-06-13
JP2013-125079 2013-06-13
JP2013125079A JP6161967B2 (ja) 2013-02-12 2013-06-13 短絡素子、およびこれを用いた回路
JP2013-125078 2013-06-13
JP2013125078A JP6246503B2 (ja) 2013-02-08 2013-06-13 短絡素子、およびこれを用いた回路
JP2013125077A JP6254777B2 (ja) 2013-02-05 2013-06-13 短絡素子、およびこれを用いた回路

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US14/818,862 Continuation US9899179B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same
US14/819,061 Continuation US9953792B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same
US14/819,328 Continuation US9953793B2 (en) 2013-02-05 2015-08-05 Short-circuit element and a circuit using the same

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WO2016098854A1 (fr) * 2014-12-18 2016-06-23 デクセリアルズ株式会社 Élément de commutation
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CN109103521A (zh) * 2018-08-23 2018-12-28 江门市钧崴电子科技有限公司苏州分公司 电池保护装置及其加热结构、电子设备
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TWI736443B (zh) * 2019-11-07 2021-08-11 日商日立全球先端科技股份有限公司 燃料電池陣列、燃料電池檢查方法
JP2024022172A (ja) * 2022-08-05 2024-02-16 トヨタ自動車株式会社 電子部品
CN117912915A (zh) * 2024-03-15 2024-04-19 嘉兴模度新能源有限公司 复合熔断电连接结构及电池组

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Cited By (19)

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Publication number Priority date Publication date Assignee Title
WO2015037210A1 (fr) * 2013-09-11 2015-03-19 デクセリアルズ株式会社 Circuit de commutation
CN106663567B (zh) * 2014-08-26 2018-11-06 迪睿合株式会社 电路基板及电子部件的安装方法
WO2016031502A1 (fr) * 2014-08-26 2016-03-03 デクセリアルズ株式会社 Carte de circuit imprimé et procédé de montage de composant électronique
JP2016046208A (ja) * 2014-08-26 2016-04-04 デクセリアルズ株式会社 回路基板及び電子部品の実装方法
TWI672984B (zh) * 2014-08-26 2019-09-21 日商迪睿合股份有限公司 電路基板及電子零件之安裝方法
CN106663567A (zh) * 2014-08-26 2017-05-10 迪睿合株式会社 电路基板及电子部件的安装方法
TWI697022B (zh) * 2014-11-11 2020-06-21 日商迪睿合股份有限公司 熔絲單元、熔絲元件、保護元件、短路元件、切換元件
CN107735849A (zh) * 2014-11-11 2018-02-23 迪睿合株式会社 熔丝单元、熔丝元件、保护元件、短路元件、切换元件
CN107408474A (zh) * 2014-12-18 2017-11-28 迪睿合株式会社 开关元件
JP2016119172A (ja) * 2014-12-18 2016-06-30 デクセリアルズ株式会社 スイッチ素子
WO2016098854A1 (fr) * 2014-12-18 2016-06-23 デクセリアルズ株式会社 Élément de commutation
TWI705468B (zh) * 2014-12-18 2020-09-21 日商迪睿合股份有限公司 開關元件
CN109103521A (zh) * 2018-08-23 2018-12-28 江门市钧崴电子科技有限公司苏州分公司 电池保护装置及其加热结构、电子设备
CN109103521B (zh) * 2018-08-23 2024-05-03 钧崴电子科技股份有限公司 电池保护装置及其加热结构、电子设备
CN109239438A (zh) * 2018-10-12 2019-01-18 四川大学 多股绝缘自制热导线的制热控制检测设备与检测控制方法
CN109239438B (zh) * 2018-10-12 2023-09-12 四川大学 多股绝缘自制热导线的制热控制检测设备与检测控制方法
TWI736443B (zh) * 2019-11-07 2021-08-11 日商日立全球先端科技股份有限公司 燃料電池陣列、燃料電池檢查方法
JP2024022172A (ja) * 2022-08-05 2024-02-16 トヨタ自動車株式会社 電子部品
CN117912915A (zh) * 2024-03-15 2024-04-19 嘉兴模度新能源有限公司 复合熔断电连接结构及电池组

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