WO2022019565A1 - 전류 측정 장치 - Google Patents
전류 측정 장치 Download PDFInfo
- Publication number
- WO2022019565A1 WO2022019565A1 PCT/KR2021/009064 KR2021009064W WO2022019565A1 WO 2022019565 A1 WO2022019565 A1 WO 2022019565A1 KR 2021009064 W KR2021009064 W KR 2021009064W WO 2022019565 A1 WO2022019565 A1 WO 2022019565A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- resistor
- circuit board
- extension
- cutting unit
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Measuring current only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/14—Measuring resistance by measuring current or voltage obtained from a reference source
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R3/00—Apparatus or processes specially adapted for the manufacture or maintenance of measuring instruments, e.g. of probe tips
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/364—Battery terminal connectors with integrated measuring arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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 current measuring device, and more particularly, to a current measuring device configured to quickly cut off current by itself when an abnormal current flows, and to a battery pack and a vehicle including the same.
- lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, so charging and discharging are free, The self-discharge rate is very low and the energy density is high, attracting attention.
- Such a lithium secondary battery mainly uses a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate to which the positive electrode active material and the negative electrode active material are applied, respectively, are disposed with a separator interposed therebetween, and a casing for sealing and housing the electrode assembly together with an electrolyte, that is, a battery case.
- the safety of the battery pack is emerging as a very important issue.
- the use of the population is rapidly increasing, and the failure to secure battery safety may lead to damage to the vehicle as well as casualties of occupants.
- the battery pack is generally provided with various management means for managing the charging and discharging of the battery pack and securing safety.
- the means for securing the safety of such a battery pack may include various configurations.
- a control device such as a current sensor provided in a path through which the charging/discharging current flows and a battery management system (BMS) that blocks the charging/discharging path in case of overcurrent are used.
- BMS battery management system
- current sensing information measured by the current sensor is transmitted to a control device, and the control device may operate a current blocking element such as a fuse, a switch, or a relay according to the current sensing information.
- current sensing information is transmitted to a control device such as the BMS, and a control signal for cutting the current has to go through a process of being transmitted from a device such as the BMS to the current blocking device, so that the current is cut off quickly The action may not be performed.
- the present invention has been devised to solve the above problems, and a current measuring device capable of quickly performing a current blocking function by itself without using a separate control device such as a BMS, a battery pack including the same, and The purpose is to provide automobiles, etc.
- a first terminal made of an electrically conductive material; a second terminal made of an electrically conductive material and spaced apart from the first terminal by a predetermined distance; a resistor interposed in a space between the first terminal and the second terminal and made of an electrically conductive material having a specific resistance greater than that of the first terminal and the second terminal; a circuit board on which an electrical path is formed, located on sides of the first terminal and the second terminal, and electrically connected to the first terminal and the second terminal, respectively; a control unit mounted on the circuit board and configured to measure a current flowing through the resistor using a voltage value between the first terminal and the second terminal and a resistance value of the resistor; and a cutting unit positioned above or below the resistor and configured to cut the resistor according to a control signal from the control unit.
- the first terminal and the second terminal may be formed in a plate shape, and may be configured to be positioned on the same plane as the circuit board.
- the circuit board may include a main body positioned on the side of the first terminal and the second terminal, a first extension extending from the main body in a horizontal direction and configured to be seated on a surface of the first terminal; It may be configured to include a second extension configured to be seated on the surface of the second terminal.
- the cutting unit at least a portion may be configured to be seated on both the surface of the first extension and the second extension.
- the cutting unit may be configured to protrude more in the outer horizontal direction than the first extension part and the second extension part.
- circuit board may be configured to be detachable from the first terminal and the second terminal.
- the cutting unit may be configured to hold the gunpowder therein, and to explode the gunpowder to cut the resistor.
- the cutting unit is located above or below the resistor and includes an explosive part configured to apply a cutting force by explosion to the resistor, a pressing part configured to press the resistor by the explosive force of the explosive part, and the resistor based on To be positioned on the opposite side of the pressing portion may be provided with a cover portion configured to prevent the resistance body cut by the pressing force of the pressing portion from scattering.
- the circuit board may be configured such that a heat dissipation member is provided on a surface thereof, and a heat transfer material is interposed between at least one of the first terminal, the resistor, and the second terminal and the heat dissipation member.
- the battery pack according to the present invention for achieving the above object includes a current measuring device according to the present invention.
- the vehicle according to the present invention for achieving the above object includes the current measuring device according to the present invention.
- the overcurrent when an abnormal situation such as an overcurrent occurs, the overcurrent can be quickly cut off.
- the overcurrent when the overcurrent is measured by the current measuring device, there is no need to communicate with a control device such as a BMS to cut off the overcurrent.
- FIG. 1 is an exploded perspective view schematically showing the configuration of a current measuring device according to an embodiment of the present invention.
- FIG. 2 is a combined perspective view of FIG. 1 .
- FIG. 3 is an exploded perspective view schematically illustrating a configuration of a current measuring device according to an embodiment of the present invention.
- FIG. 4 is an exploded perspective view schematically illustrating the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 5 is a combined perspective view of FIG. 4 .
- FIG. 6 is a cross-sectional view taken along line A1-A1' of FIG. 5 .
- FIG. 7 is a perspective view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 8 is an enlarged cross-sectional view of a portion A2 of FIG. 7 .
- FIG. 9 is a front cross-sectional view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 10 is a perspective view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 11 is a cross-sectional view taken along line A5-A5' of FIG. 10 .
- FIG. 12 is a perspective view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 13 is a cross-sectional view taken along line A6-A6' of FIG. 12 .
- FIG. 14 is an exploded perspective view schematically illustrating a partial configuration of a current measuring device according to another embodiment of the present invention.
- 15 is a side cross-sectional view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- 16 is a side cross-sectional view schematically showing the configuration of a current measuring apparatus according to another embodiment of the present invention.
- FIG. 1 is an exploded perspective view schematically illustrating a configuration of a current measuring device according to an embodiment of the present invention
- FIG. 2 is a combined perspective view of FIG. 1 .
- the current measuring device includes a first terminal 100 , a second terminal 200 , a resistor 300 , a circuit board 400 , a control unit 500 , and cutting unit 600 .
- the first terminal 100 and the second terminal 200 may be made of an electrically conductive material.
- the first terminal 100 and the second terminal 200 may be made of a metal material such as copper.
- the first terminal 100 and the second terminal 200 may be respectively connected to one side and the other side on a path through which a current flows.
- the ends of the first terminal 100 and the second terminal 200 may be in the same charging/discharging path of the battery pack. It may be configured to be respectively connected to different charging/discharging busbars constituting the .
- the first terminal 100 and the second terminal 200 may have terminal holes formed therein, as indicated by H1 in the drawing, and these terminal holes are formed from a hole in a charge/discharge bus bar of a battery pack and a hole in the battery pack. It may be configured to be bolted together.
- the first terminal 100 and the second terminal 200 may be disposed to be spaced apart from each other by a predetermined distance.
- the first terminal 100 and the second terminal 200 may be configured to be spaced apart by a predetermined distance in the left-right direction (the x-axis direction of the drawing).
- the resistor 300 may be configured to be interposed in a space between the first terminal 100 and the second terminal 200 .
- the resistor 300 may be configured to be fixedly coupled to the first terminal 100 and the second terminal 200 .
- the resistor 300 may have one end (left end) coupled and fixed to the first terminal 100 , and the other end (right end) coupled and fixed with the second terminal 200 .
- the coupling between the resistor 300 and the first terminal 100 and/or the second terminal 200 may be configured in the form of welding or the like, but various other coupling types may be employed.
- the resistor 300 may be made of an electrically conductive material having a higher resistance value, particularly a specific resistance, than that of the first terminal 100 and the second terminal 200 .
- the resistor 300 may be made of an alloy material containing at least two or more of manganese (Mn), nickel (Ni), and copper (Cu).
- the material, configuration, and shape of the first terminal 100 , the second terminal 200 , and the resistor 300 a configuration of a current sensor having a shunt resistor known at the time of filing of the present invention may be employed.
- the circuit board 400 like a printed circuit board (PCB), is configured in a plate shape, and may be configured to form an electrical path on the surface or inside.
- the circuit board 400 may be positioned on the side of the first terminal 100 and the second terminal 200 .
- the circuit board 400 may be configured to be positioned on a side in a direction orthogonal to the coupling direction between the first terminal 100 and the second terminal 200 .
- the first terminal 100 and the second terminal 200 are coupled in the left-right direction (the x-axis direction of the drawing) with the resistor 300 interposed therebetween.
- the circuit board 400 may be configured to be coupled in the front-rear direction (the y-axis direction in the drawing).
- the circuit board 400 may be configured to be positioned at the front end of the first terminal 100 , the second terminal 200 , and the resistor 300 .
- the circuit board 400 may be configured to be electrically connected to the first terminal 100 and the second terminal 200 , respectively.
- the circuit board 400 may include a plurality of measurement wires 401 made of a material through which an electrical signal can be transmitted. And, the circuit board 400 is electrically connected to the first terminal 100 through one of the measuring wires 401 and electrically connected to the second terminal 200 through the other measuring wire 401 . can be connected to Also, the measurement wire 401 may be connected and fixed to a conductor pattern formed on the circuit board 400 .
- the bonding and fixing form between the measuring wire 401 and the terminals 100 and 200 and/or between the measuring wire 401 and the circuit board 400 may be implemented in a form such as soldering, but various other bonding and fixing methods are provided. It may be implemented in the form.
- the control unit 500 may be mounted on the circuit board 400 and configured to measure the magnitude of the current flowing through the resistor 300 . More specifically, the control unit 500 may acquire a potential between the first terminal 100 and the second terminal 200 through the measurement wire 401 . Also, the control unit 500 may store the resistance value of the resistor 300 in advance in a memory or the like. Accordingly, the control unit 500 uses the obtained voltage value between the first terminal 100 and the second terminal 200 and the resistance value of the resistor 300 stored in advance, and the current flowing through the resistor 300 . You can measure how big a value is.
- the control unit 500 executes various control logics for measuring current, and may be mounted on the circuit board 400 and may be implemented in various forms such as a processor or chipset known in the art. .
- the cutting unit 600 may be located above or below the resistor 300 .
- the cutting unit 600 may be configured to be seated on the upper surface of the resistor 300 as shown in FIGS. 1 and 2 .
- the cutting unit 600 may be configured to be seated on the upper or lower portions of the first terminal 100 and the second terminal 200 together with the resistor 300 .
- a lower portion of the cutting unit 600 is seated in contact with the upper surface of the first terminal 100
- the other portion of the lower portion is on the upper surface of the resistor 300 . It is seated in contact, and another part of the lower part may be implemented in a form in which it is seated in contact with the upper surface of the second terminal 200 .
- the cutting unit 600 may be configured to cut the resistor 300 according to a control signal of the control unit 500 .
- the control unit 500 may cause the cutting unit 600 to cut the resistor 300 .
- the control unit 500 and the cutting unit 600 may be configured to send and receive electrical signals to each other.
- the control unit 500 and the cutting unit 600 may be configured to be electrically connected to each other through a configuration such as a flexible printed circuit board (FPCB) or a wire.
- FPCB flexible printed circuit board
- the contact point between the control unit 500 and/or the cutting unit 600 such as the FPCB may be coated with a waterproof material.
- the control unit 500 and the cutting unit 600 may be configured to exchange signals with each other via an electrical path of the circuit board 400 , that is, a conductor pattern.
- the control unit 500 may be configured to transmit a control signal for cutting to the cutting unit 600 when the current flowing through the resistor 300 is equal to or greater than a reference current.
- the reference current may be previously stored in a memory element of the control unit 500 or the like.
- the cutting unit 600 may be configured to cut the resistor 300 .
- the cutting unit 600 may be configured to cut the resistor 300 by applying a physical force to the resistor 300 . And, by physically separating the resistor 300 , the flow of current passing through the first terminal 100 , the resistor 300 , and the second terminal 200 may be blocked. That is, when the resistor 300 is separated from the first terminal 100 and the second terminal 200 , the electrical connection state between the first terminal 100 and the second terminal 200 is broken, and the The flow of current passing through the first terminal 100 , the resistor 300 , and the second terminal 200 may be prevented from being formed.
- the cutting unit 600 is configured to press only the resistor 300 against the combination of the first terminal 100 , the resistor 300 , and the second terminal 200 .
- the combination between the first terminal 100 , the resistor 300 , and the second terminal 200 may be more easily separated. That is, the resistor 300 may be coupled and fixed with the first terminal 100 and the second terminal 200 by welding or the like. By applying a physical force to the resistor 300 , the resistor 300 and The coupled and fixed portions between the first terminal 100 and between the resistor 300 and the second terminal 200 may be separated at once. Accordingly, in this case, more rapid current cut-off may be possible.
- the current blocking performance can be stably secured while having a simple structure.
- the circuit board 400 is located on the side of the first terminal 100 , the resistor 300 , and the second terminal 200 , and the cutting unit 600 is the first terminal 100 . ), the resistor 300 and the second terminal 200 by being located on the upper or lower side, due to the cutting unit 600, the connection between the first terminal 100 and the second terminal 200 and the circuit board 400
- the configuration, such as the measuring connecting pin or the measuring wire 401 may be unobstructed.
- the measuring wire 401 and the like do not need to be provided long. Accordingly, accuracy and structural coupling force for current measurement between the circuit board 400 and the first terminal 100 and the second terminal 200 may be further improved.
- the current measuring device of the present invention may have both the current measuring performance and the current blocking performance, and the volume may not be excessively increased. Accordingly, when mounted on a battery pack or the like, the design of the battery pack or the like can be facilitated and the volume of the battery pack or the like can be prevented from increasing.
- the cutting unit 600 may be disposed on the upper portion of the resistor (300).
- the upper portion of the resistor 300 may be covered by the cutting unit 600 , thereby more effectively preventing moisture or moisture existing inside the current measuring device from flowing into the resistor 300 .
- the accuracy of current measurement may be reduced.
- the cutting unit 600 is moved to the upper portion of the resistor 300 by moisture or water droplets. By preventing inflow, it is possible to prevent a decrease in the accuracy of current measurement.
- the circuit board 400 may include a connector 402 for communication with an external device.
- the BMS included in the battery pack may be connected to the current measuring device through the connector 402 .
- the BMS may receive current measurement information of the current measurement device through the connector 402 .
- the circuit board 400 may further include various other components in addition to the connector 402 and the control unit 500 .
- the first terminal 100 and the second terminal 200 may be formed in a plate shape.
- the first terminal 100 and the second terminal 200 may be formed in the form of a copper plate.
- the circuit board 400 may also be configured in a plate shape.
- the first terminal 100 and the second terminal 200 may be configured to be positioned on the same plane as the circuit board 400 . have. More specifically, the first terminal 100 and the second terminal 200 may be configured in a shape in which two large surfaces are laid down to face an upper and a lower portion.
- the circuit board 400 may also be configured in a form in which two wide surfaces are laid to face the upper and lower portions.
- the first terminal 100 , the second terminal 200 , and the circuit board 400 may be configured to be positioned on the same plane.
- the first terminal 100 , the second terminal 200 , and the circuit board 400 may all have a lower surface parallel to the x-y plane.
- the first terminal 100 , the second terminal 200 , and the circuit board 400 may be stably mounted on the bottom surface of the current measuring device.
- FIG. 3 is an exploded perspective view schematically illustrating a configuration of a current measuring device according to an embodiment of the present invention.
- FIG. 3 portions having differences from the previous embodiments of FIGS. 1 and 2 will be mainly described.
- the current measuring device may further include a case 700 .
- the case 700 as an exterior material of the current measuring device, has an internal space to include other components of the current measuring device, such as the first terminal 100, the second terminal 200, the resistor 300, and the circuit board. 400 , the control unit 500 and the cutting unit 600 may be configured to receive at least a portion.
- the case 700 may be configured to include a lower case 701 and an upper case 702 .
- an inner space is formed in the lower case 701 to accommodate other components of the current measuring device, but an open portion is formed at the upper end, and the upper case 702 is coupled to the upper open portion of the lower case 701.
- the case 700 may protect various components provided therein from external physical and chemical factors.
- the case 700 for example, the lower case 701, may be configured such that a portion of the first terminal 100 and the second terminal 200 is exposed to the outside for electrical connection to a charge/discharge bus bar, etc. have.
- the case 700, the connector 402 and the like are also exposed to the outside, so that an external device such as a BMS can be easily connected to the connector 402 or the like.
- FIG. 4 is an exploded perspective view schematically illustrating a configuration of a current measuring device according to another embodiment of the present invention
- FIG. 5 is a combined perspective view of FIG. 4
- FIG. 6 is a cross-sectional view taken along line A1-A1' of FIG. 5 .
- the circuit board 400 may include a body portion 410 and an extension portion.
- the extension portion may include a first extension portion 421 and a second extension portion 422 .
- the main body 410 is a configuration located on the side of the first terminal 100 and the second terminal 200, and can be said to have a configuration corresponding to the circuit board 400 of FIGS. 1 and 2 above. Accordingly, a conductor pattern may be formed on the body portion 410 , and the control unit 500 may be mounted thereon.
- the first extension 421 may be formed to extend from the main body 410 in a horizontal direction.
- the first extension portion 421 may be configured to extend in a y-axis direction, in particular, a -y-axis direction on an x-y plane.
- the first extension part 421 may be configured to be seated on the surface of the first terminal 100 , for example, the upper surface of the first terminal 100 .
- the second extension 422 may be configured to extend in a horizontal direction from the main body 410 , in particular, to extend in a direction parallel to the extension direction of the first extension 421 .
- the second extension part 422 may be configured to extend in the -y-axis direction, like the first extension part 421 .
- the second extension part 422 may be configured to be seated on the surface of the second terminal 200 , for example, the upper surface of the second terminal 200 .
- the coupling property between the circuit board 400 and the resistor coupler which is a combination of the first terminal 100 , the resistor 300 , and the second terminal 200 , may be improved.
- the first extension 421 and the second extension 422 are disposed above or below the first terminal 100 and the second terminal 200 , so that the first terminal 100 and the second terminal ( 200) may limit the movement in the downward or upward direction. Accordingly, mechanical coupling between the resistor coupler and the circuit board 400 may be improved.
- an electrical connection between the circuit board 400 and each terminal may be made through the first extension part 421 and the second extension part 422 .
- the conductive pattern formed on the body portion 410 may extend to the first extension portion 421 and the second extension portion 422 .
- the conductive pattern formed on the first extension part 421 and the second extension part 422 may be connected to the first terminal 100 and the second terminal 200 .
- the conductive patterns of the first and second extensions 421 and 422 are embedded in the polymer layer, at least a portion of the conductive pattern may be exposed to the outside of the polymer layer. have.
- the exposed portion of the conductor pattern may be in contact with the first terminal 100 and the second terminal 200 to be electrically connected to the first terminal 100 and the second terminal 200 .
- the electrical connection between the circuit board 400 and each terminal can be made more easily.
- the electrical connection element such as the measurement wire 401 shown in FIGS. 1 and 2 may not be included outside the circuit board 400 .
- the thickness of the circuit board 400 may be thicker than the thickness of the first terminal 100 and the second terminal 200 .
- t1 and t2 can be constructed so that the following relationship is established.
- t1 may be configured to be equal to the sum of t2 and t3.
- the thickness of the stack of the second extension portion 422 and the second terminal 200 is the same as the thickness of the body portion 410 . Accordingly, the lower surface of the main body 410 is positioned on the same plane as the lower surface of the second terminal 200 , and the upper surface of the main body 410 is positioned on the same plane as the upper surface of the second extension part 422 .
- such a configuration may be equally applied between the first extension part 421 and the first terminal 100 . Accordingly, the coupling state between the circuit board 400 , the terminal, and the cutting unit 600 may be more stably maintained.
- the cutting unit 600 is at least a portion of the first extension 421 and It may be configured to be all seated on the surface of the second extension 422 .
- a lower portion of one side of the cutting unit 600 is seated on the upper portion of the first extension 421 , and the lower portion of the other side of the cutting unit 600 .
- the lower right portion may be configured to be seated on the upper portion of the second extension portion 422 .
- the coupling between the cutting unit 600 and the circuit board 400 can be improved.
- the cutting unit 600 since the first extension portion 421 and the second extension portion 422 of the circuit board 400 have a flat outer surface, that is, the upper surface, the cutting unit 600 may be stably seated on this flat surface.
- an empty space is formed between the first extension part 421 and the second extension part 422 in the upper part of the resistor 300 , the cutting unit 600 for cutting the resistor 300 . ), a space can be secured where the cutting configuration can be located.
- the first extension 421 and the second extension 422 serve to block the fragments of the resistor 300 . , it is possible to prevent fragments from scattering to the outside.
- the cutting unit 600 and the resistance coupler may not be in direct contact with each other, the problem of decreasing the accuracy of current measurement due to current leakage or contact resistance, etc. can be prevented.
- FIG. 7 is a perspective view schematically illustrating a configuration of a current measuring apparatus according to another embodiment of the present invention
- FIG. 8 is an enlarged cross-sectional view of a portion A2 of FIG. 7 .
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the cutting unit 600 may be configured to protrude more in the outer horizontal direction than the first extension part 421 and the second extension part 422 . That is, the cutting unit 600 may include a lower protrusion 601 protruding outward than the first extension 421 and the second extension 421 .
- the right lower end of the cutting unit 600 is seated on the upper portion of the second extension 422 , and the right end of the cutting unit 600 is seated in the right direction (+x in the drawing) than the second extension 422 . axial direction) to further protrude to form the lower protrusion 601 .
- the lower protrusion 601 is bent in the lower direction (the -z-axis direction in the drawing) in a form surrounding the outside of the second extension 422 in a state extending to the right of the second extension 422 .
- FIG. 8 is shown with respect to the configuration between the lower right end and the second extension 422 of the cutting unit 600 , but this lower protrusion 601 is the lower left end of the cutting unit 600 and the first extension Between the parts 421 may be configured in a similar form. That is, at the lower left side of the cutting unit 600, the lower protrusion 601 configured to be bent in a shape surrounding the outside, that is, the left side of the first extension portion 421 may be provided.
- the resistor 300 since the first extension 421 and the second extension 422 of the circuit board 400 are surrounded by the lower protrusion 601 of the cutting unit 600, the resistor 300 ), it is possible to more effectively prevent foreign substances, especially moisture, from entering. That is, according to the configuration, the gap between the lower surface of the cutting unit 600 and the upper surface of the first extension part 421 or the second extension part 421 by the lower protrusion 601 may not be exposed to the outside. . Accordingly, it is possible to more reliably prevent foreign substances, such as moisture, from entering the resistor 300 positioned between the first extension part 421 and the second extension part 422 in the horizontal direction.
- water droplets may flow in a downward direction along the surface of the cutting unit 600.
- the water droplets are moved toward the lower protrusion 601 and the water droplets are directed toward the resistor 300. penetration can be prevented.
- the lower protrusion 601 covers the side surfaces of the first extension part 421 and the second extension part 422 to protect the first extension part 421 and the second extension part 422 from external impact. may play a role in protecting
- FIG. 9 is a front cross-sectional view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- FIG. 9 can be said to be another modified example of a cross-sectional configuration taken along line A4-A4' of FIG. 5 .
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the outer upper portions of the first and second extensions 421 and 422 may be chamfered.
- the first extension portion 421 may be configured in a form in which the upper left corner portion is inclined, like the portion indicated by A3 in FIG. 9 .
- the second extension 422 may be configured in a form in which an upper right corner of the second extension portion 422 is inclined, as in the portion indicated by A3 ′ in FIG. 9 .
- such a chamfer may be configured in a curved shape.
- the chamfered portion may be formed in a portion located outside the cutting unit 600 in the horizontal direction.
- this configuration of the present invention it is possible to more reliably prevent moisture, etc. from penetrating into the resistor 300 side.
- the water droplet flows along the outer surface of the cutting unit 600, the water droplet falling to the first extension part 421 or the second extension part 422 is opposite to the resistor 300 side through the chamfered part. can flow more easily. Accordingly, a problem of a decrease in accuracy of current measurement due to penetration of moisture or the like into the resistor 300 can be more reliably prevented.
- FIG. 10 is a perspective view schematically showing the configuration of a current measuring device according to another embodiment of the present invention
- FIG. 11 is a cross-sectional view taken along line A5-A5' of FIG. 10 .
- the cutting unit 600 is not shown.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the circuit board 400 of the current measuring device may include a third extension part 423 .
- the third extension 423 may be configured to connect an end of the first extension 421 and an end of the second extension 422 to each other.
- the left end of the third extension 423 may be connected to the rear end of the first extension 421
- the right end of the third extension 423 may be connected to the rear end of the second extension 422 .
- the cutting unit 600 may be seated on the upper portion of the third extension 423 . That is, as shown in FIG. 11 , the rear end of the cutting unit 600 may be seated on the upper portion of the third extension 423 .
- the cutting unit 600 may be said to be seated on all of the first extension 421 , the second extension 422 , and the third extension 423 . Moreover, the cutting unit 600 may be partially seated on the upper portion of the main body 410 as shown in FIG. 11 .
- the circuit board 400 is positioned in the horizontal direction, ie, in the front, rear, left, and right directions, based on the resistor 300 .
- the cutting unit 600 is positioned above the resistor 300 . Accordingly, it is possible to more completely block the penetration of foreign substances such as moisture into the resistor 300 .
- a part of the cutting unit 600 may be configured to be seated on the upper surface of the main body 410 .
- the upper portion of the resistor 300 may be more reliably sealed by the cutting unit 600 .
- the third extension portion 423 may be bent to surround the outer portion (the rear end side) of the resistor 300 . That is, the third extension portion 423 may be configured to be bent downward in a shape surrounding the rear end side of the resistor 300 .
- the circuit board 400 may be configured to have a thickness that can block the opposite outer side (front side) of the resistor 300 . In this case, the resistor 300 is more securely sealed from the outside by the main body 410 and the third extension 423 , so that the water penetration blocking effect to the resistor 300 may be further improved.
- FIG. 12 is a perspective view schematically showing the configuration of a current measuring apparatus according to another embodiment of the present invention
- FIG. 13 is a cross-sectional view taken along line A6-A6' of FIG. 12 .
- other components such as the cutting unit 600 are not shown in FIGS. 12 and 13 for convenience of description.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the first extension part 421 and the second extension part 422 may be configured to be positioned at different portions in the vertical direction with respect to the resistor 300 .
- the first extension part 421 is seated in contact with the upper surface of the first terminal 100
- the second extension part 422 is seated on the second terminal 200 . It can be seated in contact with the lower surface of the
- the coupling force between the circuit board 400 and the resistor coupler composed of the first terminal 100 , the resistor 300 , and the second terminal 200 may be further increased.
- the resistance coupler is limited in movement in the upper direction by the first extension portion 421 and moves downward by the second extension portion 422 . Movement may be restricted. That is, the movement of the resistance coupler in both the upper direction and the lower direction may be restricted by the circuit board 400 .
- the first extension 421 or the second extension 422 moves in a direction opposite to the pressing direction of the resistor assembly.
- the cutting of the resistor 300 by the cutting unit 600 can be made more smoothly and quickly.
- the bonding force between the circuit board 400 and the resistance coupler is improved, so that the mechanical stability of the current measuring device may be further improved.
- the circuit board 400 may be configured to be detachable from the resistance coupler, in particular, the first terminal 100 and the second terminal 200 . This will be described in more detail with reference to FIG. 14 .
- FIG. 14 is an exploded perspective view schematically illustrating a partial configuration of a current measuring device according to another embodiment of the present invention.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the circuit board 400 may be coupled to the first terminal 100 and the second terminal 200 by fastening members such as bolts. More specifically, in the first extension portion 421 of the circuit board 400 , as indicated by H21, a first coupling hole may be formed to penetrate in the vertical direction. In addition, a first through hole may be formed in the first terminal 100 in a position and shape corresponding to the first coupling hole H21 . In addition, in the second extension portion 422 of the circuit board 400 , as indicated by H22 , a second coupling hole may be formed to penetrate in the vertical direction. In addition, a second through hole may be formed in the second terminal 200 in a position and shape corresponding to the second coupling hole H22 .
- first bolt B1 may be inserted between the first coupling hole H21 and the first through hole to connect the first extension part 421 and the first terminal 100 to each other.
- second bolt B2 may be inserted between the second coupling hole H22 and the second through hole to connect the second extension part 422 and the second terminal 200 to each other.
- the circuit board 400 and each terminal may be separated from each other.
- the resistance coupling body and the circuit board 400 can be easily detached.
- the resistor 300 may be cut by the cutting unit 600 . And, when the resistor 300 is cut in this way, the resistor combination needs to be replaced with a new one.
- the resistor coupler can be easily separated from the circuit board 400 and replaced with another new resistor coupler. Accordingly, the circuit board 400 and the like may continue to be available.
- the bolts B1 and B2 are not only between the resistance couplers 100 , 200 , 300 and the circuit board 400 , but also the cutting unit 600 can be fastened. have.
- a fastening hole is also formed in the cutting unit 600, and also in these fastening holes, the bolts B1 and B2 ) can be inserted.
- the resistance coupling bodies 100 , 200 , 300 , the circuit board 400 , and the cutting unit 600 may be coupled and fixed at a time.
- an electrical connection between the circuit board 400 and the terminals 100 and 200 may be made by the bolts B1 and B2 .
- the first bolt B1 may be made of a conductive material, and may be configured to electrically connect the conductive pattern of the first extension 421 and the first terminal 100 .
- the second bolt B2 may also be made of a conductive material, and may be configured to electrically connect the conductive pattern of the second extension part 422 and the second terminal 200 .
- the electrical connection and the mechanical connection between the extension parts 421 and 422 of the circuit board 400 and the terminals 100 and 200 of the resistance coupler can be made at once by fastening the bolts.
- the electrical connection between the circuit board 400 and the terminal may be implemented by a ring terminal wire or the like.
- one end of the ring terminal wire is coupled to the first coupling hole H21 and the first coupling hole by the first bolt B1 to be mechanically and electrically connected to the first terminal 100
- the ring terminal wire The other end may be mechanically and electrically connected to the main body 410 of the circuit board 400 by other bolts or the like.
- one end and the other end of the other ring terminal wire may be mechanically and electrically connected to the second coupling hole H22 and the second coupling hole and the body portion 410 of the circuit board 400 , respectively.
- the cutting unit 600 may be configured to hold the gunpowder therein. And, the cutting unit 600 may be configured to explode the held gunpowder, and cut the resistor 300 by the explosion of this gunpowder. In addition, the cutting unit 600, based on the control signal of the control unit 500, may explode the gunpowder. To this end, the cutting unit 600 may be electrically connected to the control unit 500 to receive a control signal from the control unit (500). For example, the cutting unit 600 may be connected through the control unit 500 and the FPCB.
- FIG. 15 is a side cross-sectional view schematically showing the configuration of a current measuring device according to another embodiment of the present invention.
- the configuration of the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- FIG. 15 it is shown with a focus on the configuration of the cutting unit 600 , and for other configurations, it is shown in a simplified form.
- the cutting unit 600 may include an explosive unit 610 , a pressurizing unit 620 , and a cover unit 630 .
- the explosive part 610 may be positioned above or below the resistor 300 to apply a cutting force due to the explosion to the resistor 300 . More specifically, in FIG. 15 , the explosive unit 610 is located on the upper portion of the resistor 300 , and may include gunpowder 611 , an ignition switch 612 , a cylinder 613 , and a piston 614 . .
- the ignition switch 612 may be connected to the control unit 500 through an electrical connection element, as indicated by F in the drawing.
- the electrical connection element may be an FPCB, but various other connection elements may be used.
- the ignition switch 612 when a signal for cutting is received from the control unit 500, by igniting the flame, the gunpowder 612 held in the cylinder 613 can be exploded. And, due to the explosion of the gunpowder 611, the pressure inside the cylinder 613 is increased, and the piston 614 can be moved quickly and strongly in the lower direction.
- the pressing unit 620 may be connected to the piston 614 .
- the pressing unit 620 may be configured to directly press the resistor 300 by receiving a force by the explosive force of the explosive unit 610 . More specifically, when the piston 614 moves rapidly and strongly in the lower direction, eventually, as indicated by an arrow in the figure, the pressing part 620 connected to the piston 614 can also move quickly and strongly in the lower direction.
- the movement of the pressing part 620 applies pressure to the resistor 300 to cut the resistor 300 itself, or between the resistor 300 and the first terminal 100 and/or the resistor 300 . It is possible to separate the coupling between the and the second terminal 200 . Accordingly, current may no longer flow through the resistor couplers 100 , 200 , and 300 .
- the cutting unit 600 may include a cover portion 630 .
- the cover part 630 may be located on the opposite side of the pressing part 620 with respect to the resistor 300 .
- the pressing part 620 may be positioned above the resistor 300
- the cover part 630 may be positioned below the resistor 300 .
- the cover part 630 may be configured to prevent the fragments of the resistor 300 cut by the pressing force of the pressing part 620 from scattering.
- the cover part 630 may have an empty space therein, but the side where the resistor 300 is located is open, and all other parts are closed. For example, as illustrated in FIG.
- the cover portion 630 may have an open upper portion and a closed lower portion and side portion of the cover portion 630 .
- the separated or damaged resistor 300 or a fragment thereof is removed from the cutting unit 600 . can be prevented from scattering. Accordingly, due to the cutting configuration of the resistor 300 of the cutting unit 600, other components of the current measuring device, etc. can be prevented from being damaged.
- FIG. 16 is a side cross-sectional view schematically showing the configuration of a current measuring apparatus according to another embodiment of the present invention.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the circuit board 400 may include a heat dissipation member 430 .
- most of the heat dissipation member 430 may be attached to the surface of the circuit board 400 , for example, the upper surface of the main body 410 .
- the heat dissipating member 430 may include a heat dissipating part 431 emitting heat and a heat absorbing part 432 absorbing heat.
- the heat dissipation member 430 may be configured to absorb heat generated from the resistive body, in particular, the first terminal 100 and the second terminal 200 .
- the heat absorbing portion 432 of the heat dissipation member 430 is directly or indirectly insulated from at least one of the first terminal 100 , the resistor 300 , and the second terminal 200 while maintaining electrical insulation. may be configured to contact. And, as indicated by the arrow, the heat absorbed from the resistance coupler through the heat absorbing unit 432 may be discharged to the outside through the heat dissipating unit 431 .
- the heat dissipation member 430 may be implemented in various types of heat dissipation configuration types known at the time of filing of the present invention, such as a heat sink.
- a heat transfer material T may be interposed between at least one of the first terminal 100 , the resistor 300 , and the second terminal 200 and the heat dissipation member 430 .
- a gel-like heat transfer material T may be interposed between the first terminal 100 and the heat absorbing portion 432 of the heat dissipation member 430 .
- the heat transfer material T may also be interposed between the resistor 300 and/or the second terminal 200 and the heat absorbing portion 432 of the heat dissipating member 430 .
- the heat transfer material T may be made of a material having high thermal conductivity and electrical insulation. Since such a heat transfer material (T) is widely known at the time of filing of the present invention, a detailed description thereof will be omitted.
- the heat of the resistor assembly in particular, the resistor 300 can be more smoothly discharged to the outside.
- the resistor 300 it is necessary to make corrections in consideration of the effect of temperature when measuring current due to a temperature coefficient of resistance (TCR) characteristic.
- TCR temperature coefficient of resistance
- the heat absorbing portion 432 is configured to protrude downward from the lower portion of the heat dissipating portion 431 , and may be contact-coupled to the inside of the body portion 410 of the circuit board 400 .
- the heat absorbing part 432 is in contact with the main body 410
- the other surface (the right side of the drawing) of the heat absorbing part 432 is the first terminal 100 and the resistor 300 .
- the second terminal 200 may be in contact with at least one. That is, when looking at the y-axis direction of FIG.
- the heat absorbing part 432 may be fixed in a state interposed between the body part 410 and the resistance couplers 100 , 200 , and 300 .
- the heat absorbing part 432 may be interposed between the first extension part 421 and the second extension part 422 when viewed in the x-axis direction of FIG. 14 and the like.
- the heat dissipation member 430 may be more stably fixed on the surface of the body portion 410 . That is, in the heat dissipation member 430 , the movement of the heat absorbing part 432 in the left and right directions (x-axis direction in the drawing) is restricted by the first extension part 421 and the second extension part 422 , and the body part 410 . ) and the resistance combination, the movement of the heat absorbing part 432 in the front-back direction (the y-axis direction in the drawing) may be restricted.
- the current measuring apparatus may be applied to a battery pack.
- the battery pack according to the present invention may include the above-described current measuring device.
- the battery pack according to the present invention further includes, in addition to the current measuring device, general components included in the battery pack, such as a battery cell, a pack case, a BMS, a charge/discharge bus bar, and a voltage sensing assembly. can do.
- the current measuring device according to the present invention can be applied to a vehicle.
- the vehicle according to the present invention may include the above-described current measuring device.
- the vehicle according to the present invention may further include general components included in the vehicle, such as a vehicle body, a motor, and a drive shaft, in addition to the current measuring device.
- 611 gunpowder
- 612 ignition switch
- 613 cylinder
- 614 piston
- 701 lower case
- 702 upper case
- H1 terminal hole
- B1 first bolt
- B2 second bolt
- H21 first coupling hole
- H22 second coupling hole
- F electrical connection element
- T heat transfer material
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Description
Claims (11)
- 전기 전도성 재질로 구성된 제1 단자;전기 전도성 재질로 구성되며 상기 제1 단자와 소정 거리 이격되게 배치된 제2 단자;상기 제1 단자와 상기 제2 단자 사이의 이격 공간에 개재되며 상기 제1 단자 및 상기 제2 단자보다 비저항이 큰 전기 전도성 재질로 구성된 저항체;전기적 경로가 형성되고, 상기 제1 단자 및 상기 제2 단자의 측부에 위치하며, 상기 제1 단자 및 상기 제2 단자와 각각 전기적으로 연결된 회로 기판;상기 회로 기판 상에 실장되며, 상기 제1 단자 및 상기 제2 단자 사이의 전압값과 상기 저항체의 저항값을 이용하여 상기 저항체에 흐르는 전류를 측정하도록 구성된 제어 유닛; 및상기 저항체의 상부 또는 하부에 위치하며, 상기 제어 유닛의 제어 신호에 따라 상기 저항체를 절단하도록 구성된 절단 유닛을 포함하는 것을 특징으로 하는 전류 측정 장치.
- 제1항에 있어서,상기 제1 단자 및 상기 제2 단자는 판상으로 구성되며, 상기 회로 기판과 동일 평면 상에 위치하도록 구성된 것을 특징으로 하는 전류 측정 장치.
- 제1항에 있어서,상기 회로 기판은, 상기 제1 단자 및 상기 제2 단자의 측부에 위치하는 본체부, 상기 본체부로부터 수평 방향으로 연장되게 형성되어 상기 제1 단자의 표면에 안착되도록 구성된 제1 연장부 및 상기 제2 단자의 표면에 안착되도록 구성된 제2 연장부를 구비하는 것을 특징으로 하는 전류 측정 장치.
- 제3항에 있어서,상기 절단 유닛은, 적어도 일부분이 상기 제1 연장부 및 상기 제2 연장부의 표면에 모두 안착되도록 구성된 것을 특징으로 하는 전류 측정 장치.
- 제4항에 있어서,상기 절단 유닛은, 상기 제1 연장부 및 상기 제2 연장부보다 외측 수평 방향으로 더 돌출되게 구성된 것을 특징으로 하는 전류 측정 장치.
- 제1항에 있어서,상기 회로 기판은, 상기 제1 단자 및 상기 제2 단자와 탈착 가능하도록 구성된 것을 특징으로 하는 전류 측정 장치.
- 제1항에 있어서,상기 절단 유닛은, 내부에 화약을 보유하고, 상기 화약을 폭발시켜 상기 저항체를 절단시키도록 구성된 것을 특징으로 하는 전류 측정 장치.
- 제7항에 있어서,상기 절단 유닛은, 상기 저항체의 상부 또는 하부에 위치하여 상기 저항체로 폭발에 의한 절단력을 인가하도록 구성된 폭발부, 상기 폭발부의 폭발력에 의해 상기 저항체를 가압하도록 구성된 가압부, 및 상기 저항체를 기준으로 상기 가압부의 반대편에 위치하여 상기 가압부의 가압력에 의해 절단된 상기 저항체가 비산되는 것을 방지하도록 구성된 커버부를 구비하는 것을 특징으로 하는 전류 측정 장치.
- 제1항에 있어서,상기 회로 기판은 표면에 방열 부재가 구비되고, 상기 제1 단자, 상기 저항체 및 상기 제2 단자 중 적어도 하나와 상기 방열 부재 사이에 열전달물질이 개재되도록 구성된 것을 특징으로 하는 전류 측정 장치.
- 제1항 내지 제9항 중 어느 한 항에 따른 전류 측정 장치를 포함하는 배터리 팩.
- 제1항 내지 제9항 중 어느 한 항에 따른 전류 측정 장치를 포함하는 자동차.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022538918A JP2023509874A (ja) | 2020-07-20 | 2021-07-14 | 電流測定装置 |
| EP21847084.7A EP4148433B1 (en) | 2020-07-20 | 2021-07-14 | Current measurement device |
| ES21847084T ES3010506T3 (en) | 2020-07-20 | 2021-07-14 | Current measurement device |
| CN202180010046.XA CN114981669B (zh) | 2020-07-20 | 2021-07-14 | 电流测量装置 |
| US17/798,183 US12113346B2 (en) | 2020-07-20 | 2021-07-14 | Current measurement device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200089756A KR102747401B1 (ko) | 2020-07-20 | 2020-07-20 | 전류 측정 장치 |
| KR10-2020-0089756 | 2020-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022019565A1 true WO2022019565A1 (ko) | 2022-01-27 |
Family
ID=79728824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2021/009064 Ceased WO2022019565A1 (ko) | 2020-07-20 | 2021-07-14 | 전류 측정 장치 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US12113346B2 (ko) |
| EP (1) | EP4148433B1 (ko) |
| JP (1) | JP2023509874A (ko) |
| KR (1) | KR102747401B1 (ko) |
| CN (1) | CN114981669B (ko) |
| ES (1) | ES3010506T3 (ko) |
| HU (1) | HUE069707T2 (ko) |
| WO (1) | WO2022019565A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024047775A (ja) * | 2022-09-27 | 2024-04-08 | 矢崎総業株式会社 | 電流検出装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110002707A (ko) * | 2009-07-02 | 2011-01-10 | 주식회사 하이닉스반도체 | 반도체 장치의 퓨즈 및 그 제조방법 |
| JP2012059815A (ja) * | 2010-09-07 | 2012-03-22 | Elpida Memory Inc | 半導体装置 |
| JP6034710B2 (ja) * | 2013-01-31 | 2016-11-30 | 矢崎総業株式会社 | 電線ヒューズ及び電線ヒューズの製造方法 |
| CN205984481U (zh) * | 2016-08-26 | 2017-02-22 | 中国振华集团云科电子有限公司 | 芯片电阻器 |
| KR101720931B1 (ko) * | 2015-07-01 | 2017-04-10 | (주)청앤생 | 전기 자동차용 회로 차단 장치 |
| KR20200089756A (ko) | 2018-05-10 | 2020-07-27 | 이버 테크놀로지스 인크. | 전력 생산 환경에서 사용되는 유체 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2701590B1 (fr) * | 1993-02-15 | 1995-04-21 | Sagem | Eléments résistifs de mesure de courant et modules de raccordement et de mesure en comportant application. |
| JP4069219B2 (ja) | 1997-10-17 | 2008-04-02 | 太平洋精工株式会社 | センサー付きヒューズ |
| US20040041682A1 (en) * | 2002-08-29 | 2004-03-04 | Pasha Brian D. | Battery circuit disconnect device |
| US7123124B2 (en) | 2003-10-17 | 2006-10-17 | Special Devices, Inc. | Pyrotechnic circuit breaker |
| JP2005127832A (ja) * | 2003-10-23 | 2005-05-19 | Auto Network Gijutsu Kenkyusho:Kk | 電圧降下式電流計測装置 |
| JP4272044B2 (ja) | 2003-12-08 | 2009-06-03 | 太平洋精工株式会社 | 電流センサ内蔵ヒューズ装置 |
| JP2008039571A (ja) | 2006-08-04 | 2008-02-21 | Denso Corp | 電流センサ |
| JP2009052898A (ja) * | 2007-08-23 | 2009-03-12 | Mitsubishi Electric Corp | 電流検出基板 |
| KR101614202B1 (ko) | 2013-08-28 | 2016-04-21 | 주식회사 엘지화학 | 전류 측정 릴레이 장치 |
| JP5928430B2 (ja) | 2013-10-03 | 2016-06-01 | トヨタ自動車株式会社 | 電流センサ、電力変換装置 |
| KR101461829B1 (ko) | 2013-11-26 | 2014-11-13 | 스마트전자 주식회사 | 전류측정소자 및 전류측정소자 어셈블리의 제조방법 |
| KR20160112417A (ko) * | 2015-03-19 | 2016-09-28 | 주식회사 엘지화학 | 과충전 방지용 안전구조를 포함하는 전지팩 |
| US10598703B2 (en) | 2015-07-20 | 2020-03-24 | Eaton Intelligent Power Limited | Electric fuse current sensing systems and monitoring methods |
| DE102016216829A1 (de) | 2016-09-06 | 2018-03-08 | Bayerische Motoren Werke Aktiengesellschaft | Trenneinrichtung zum Trennen einer elektrischen Verbindung zwischen zwei Komponenten eines Kraftfahrzeugs, sowie Vorrichtung mit einer solchen Trenneinrichtung |
| JP2018189384A (ja) * | 2017-04-28 | 2018-11-29 | 株式会社Gsユアサ | 電流検出装置、管理装置、エンジン始動用のバッテリ |
| DE102017118416A1 (de) | 2017-08-11 | 2019-02-14 | Ruag Ammotec Gmbh | Pyrotechnische Trenneinrichtung, System zum elektrischen Laden einer elektrischen Energiezelle, Mobilgerät und Ladegerät |
| KR102264409B1 (ko) * | 2018-03-16 | 2021-06-21 | 주식회사 엘지에너지솔루션 | 통합형 스위칭 장치 |
| KR102258813B1 (ko) * | 2018-11-20 | 2021-05-31 | 주식회사 엘지에너지솔루션 | 복합형 전류 측정장치 |
| KR102312332B1 (ko) | 2018-12-18 | 2021-10-12 | 주식회사 엘지에너지솔루션 | 나사 체결 구조를 갖는 션트 저항 모듈 |
| JP2020106330A (ja) | 2018-12-26 | 2020-07-09 | デクセリアルズ株式会社 | 電流検知素子、電流検知素子複合体および保護回路 |
| CN210404710U (zh) * | 2019-08-28 | 2020-04-24 | 比亚迪股份有限公司 | 用于熔断装置的控制电路及车辆 |
| CN110797835A (zh) | 2019-10-16 | 2020-02-14 | 上海西埃新能源科技有限公司 | 烟火式安全开关 |
-
2020
- 2020-07-20 KR KR1020200089756A patent/KR102747401B1/ko active Active
-
2021
- 2021-07-14 JP JP2022538918A patent/JP2023509874A/ja active Pending
- 2021-07-14 EP EP21847084.7A patent/EP4148433B1/en active Active
- 2021-07-14 HU HUE21847084A patent/HUE069707T2/hu unknown
- 2021-07-14 CN CN202180010046.XA patent/CN114981669B/zh active Active
- 2021-07-14 US US17/798,183 patent/US12113346B2/en active Active
- 2021-07-14 ES ES21847084T patent/ES3010506T3/es active Active
- 2021-07-14 WO PCT/KR2021/009064 patent/WO2022019565A1/ko not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110002707A (ko) * | 2009-07-02 | 2011-01-10 | 주식회사 하이닉스반도체 | 반도체 장치의 퓨즈 및 그 제조방법 |
| JP2012059815A (ja) * | 2010-09-07 | 2012-03-22 | Elpida Memory Inc | 半導体装置 |
| JP6034710B2 (ja) * | 2013-01-31 | 2016-11-30 | 矢崎総業株式会社 | 電線ヒューズ及び電線ヒューズの製造方法 |
| KR101720931B1 (ko) * | 2015-07-01 | 2017-04-10 | (주)청앤생 | 전기 자동차용 회로 차단 장치 |
| CN205984481U (zh) * | 2016-08-26 | 2017-02-22 | 中国振华集团云科电子有限公司 | 芯片电阻器 |
| KR20200089756A (ko) | 2018-05-10 | 2020-07-27 | 이버 테크놀로지스 인크. | 전력 생산 환경에서 사용되는 유체 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4148433A4 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024047775A (ja) * | 2022-09-27 | 2024-04-08 | 矢崎総業株式会社 | 電流検出装置 |
| JP7633976B2 (ja) | 2022-09-27 | 2025-02-20 | 矢崎総業株式会社 | 電流検出装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023509874A (ja) | 2023-03-10 |
| ES3010506T3 (en) | 2025-04-03 |
| CN114981669A (zh) | 2022-08-30 |
| EP4148433A1 (en) | 2023-03-15 |
| CN114981669B (zh) | 2025-08-12 |
| EP4148433B1 (en) | 2024-12-18 |
| KR102747401B1 (ko) | 2024-12-26 |
| KR20220010962A (ko) | 2022-01-27 |
| EP4148433A4 (en) | 2023-11-08 |
| US12113346B2 (en) | 2024-10-08 |
| HUE069707T2 (hu) | 2025-04-28 |
| US20230070670A1 (en) | 2023-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019117514A1 (ko) | 버스바 어셈블리를 포함하는 배터리 모듈 | |
| WO2021060704A1 (ko) | 버스바 플레이트를 포함하는 배터리 모듈, 그것을 포함하는 배터리 팩, 및 전자 디바이스 | |
| WO2021141345A1 (ko) | 안전성이 향상된 배터리 팩 | |
| WO2019156390A1 (ko) | 전류 차단부를 구비한 버스바 및 그것을 포함한 배터리 모듈 | |
| WO2019098588A1 (ko) | 센싱 어셈블리 및 버스바 어셈블리를 포함하는 배터리 모듈 | |
| WO2019124876A1 (ko) | 버스바 어셈블리를 구비한 배터리 모듈 | |
| WO2021107429A1 (ko) | 배터리 모듈 및 배터리 팩 | |
| WO2015167046A1 (ko) | 이차 전지용 회로 기판 및 이를 포함하는 배터리 팩 | |
| WO2021096034A1 (ko) | 배터리 랙 및 전력 저장 장치 | |
| WO2021071113A1 (ko) | 버스바 플레이트를 포함하는 배터리 모듈, 그것을 포함하는 배터리 팩, 및 전자 디바이스 | |
| WO2022260407A1 (ko) | 배터리 모듈, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
| WO2019066441A1 (ko) | 보호회로모듈을 구비한 파우치형 이차전지 팩 | |
| WO2021107517A1 (ko) | 배터리 팩, 전자 디바이스, 및 자동차 | |
| WO2014185662A1 (ko) | 과전류 차단 장치 및 이를 포함하는 이차전지 시스템 | |
| WO2019240494A1 (ko) | 배터리 온도 측정 장치 및 방법 | |
| WO2020101209A1 (ko) | 모듈 하우징을 포함한 배터리 모듈 | |
| WO2020022678A1 (ko) | 도포 방지부가 구비된 셀 프레임을 포함하는 이차전지 팩 | |
| WO2022182136A1 (ko) | 전지 모듈 및 이의 제조 방법 | |
| WO2021206426A1 (ko) | 모듈 버스바를 포함하는 배터리 모듈, 및 그것을 포함한 배터리 팩, 및 전자 디바이스 | |
| WO2021002710A1 (ko) | 접속 플레이트를 구비한 배터리 팩 및 전자 디바이스 및 자동차 | |
| WO2023287201A1 (ko) | 배터리 팩 | |
| WO2023058927A1 (ko) | 안전성이 향상된 배터리 팩 | |
| WO2021112655A1 (ko) | 배터리 모듈, 배터리 팩, 및 자동차 | |
| WO2023234733A1 (ko) | 배터리 팩 | |
| WO2022270949A1 (ko) | 셀 모듈 어셈블리 및 이를 포함하는 배터리 팩 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21847084 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2022538918 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202217064555 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 2021847084 Country of ref document: EP Effective date: 20221205 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWG | Wipo information: grant in national office |
Ref document number: 202180010046.X Country of ref document: CN |