WO2022206840A1 - 电池包和电动车 - Google Patents

电池包和电动车 Download PDF

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Publication number
WO2022206840A1
WO2022206840A1 PCT/CN2022/084078 CN2022084078W WO2022206840A1 WO 2022206840 A1 WO2022206840 A1 WO 2022206840A1 CN 2022084078 W CN2022084078 W CN 2022084078W WO 2022206840 A1 WO2022206840 A1 WO 2022206840A1
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WO
WIPO (PCT)
Prior art keywords
battery
sampling
battery pack
information collector
box
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/CN2022/084078
Other languages
English (en)
French (fr)
Inventor
高健
彭青波
鄂从吉
熊柏钧
姜勇军
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.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
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
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to KR1020237022130A priority Critical patent/KR102940338B1/ko
Priority to CA3208419A priority patent/CA3208419A1/en
Priority to JP2023540647A priority patent/JP7693003B2/ja
Priority to EP22779022.7A priority patent/EP4254628A4/en
Publication of WO2022206840A1 publication Critical patent/WO2022206840A1/zh
Priority to US18/343,041 priority patent/US20230335813A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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
    • 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
    • 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
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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
    • 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 disclosure relates to the field of batteries, and in particular, to a battery pack and an electric vehicle.
  • the sampling structure is used to collect information such as the voltage and/or temperature of the battery, and transmit the collected information to the battery information collector, which is converted and sent to the battery management system by the battery information collector.
  • the battery information collector is generally arranged outside the casing of the battery pack. This arrangement not only increases the overall structural size of the battery pack, but also needs to seal the battery information collector separately, which increases the cost of the battery pack.
  • a battery pack includes a case, a sealing cover, a battery string, a sampling structure, and a battery information collector for connecting with a battery management system;
  • the battery string and the sampling structure are arranged in the box, the battery string includes a plurality of electrically connected batteries, the sampling structure includes a plurality of sampling lines, the first ends of the sampling lines are connected to the corresponding the battery is connected, and the second end of the sampling line is connected to the battery information collector;
  • the box body is provided with an opening, the battery information collector is arranged at the opening of the box body, the sealing cover is located outside the battery information collector, and the sealing cover is used to seal the box body. Open your mouth.
  • a partition is provided in the box, and the partition divides the internal space of the box into a plurality of accommodating cavities, and the battery strings and the battery strings are arranged in the accommodating cavities.
  • the first end of the sampling line in the same accommodating cavity is connected to the corresponding battery, and at least part of the second end of the sampling line in the accommodating cavity is connected to the battery for information collection device connection.
  • the second end of the sampling line is provided with a connection terminal
  • the battery information collector is provided with a plurality of pads
  • the connection terminals are welded with the pads in a one-to-one correspondence.
  • the battery pack further includes a plurality of fuses, the second end of the sampling line is provided with a connection terminal, the battery information collector is provided with a plurality of pads, and the fuses are The first end is welded to the corresponding connection terminal, and the second end of the fuse is welded to the corresponding pad.
  • the pads on the battery information collector correspondingly connected to the sampling lines in the same accommodation cavity are distributed in multiple rows along a first direction, and the first direction is the width of the box. height direction;
  • the pads on the battery information collector corresponding to the plurality of sampling lines in the accommodating cavity are arranged along a second direction, and the second direction is the length direction of the box body or the width direction of the box body.
  • the second end of the sampling line is provided with a first bent portion
  • the connection terminal is provided on the first bent portion
  • the battery information collector is provided on the one side of the first bent portion
  • a plurality of the accommodating cavities are arranged in sequence along a second direction, and a plurality of the batteries constituting the battery string are arranged in sequence along a third direction and connected in series, and the second direction is the length direction of the box body, and the third direction is the width direction of the box body; or, the second direction is the width direction of the box body, and the third direction is the width direction of the box body Longitudinal direction.
  • the battery includes a first electrode and a second electrode, the first electrode and the second electrode are distributed on opposite sides of the battery along the third direction, and are connected in series The first electrode of one of the two batteries and the second electrode of the other battery are directly connected or connected through a conductive sheet;
  • the first end of the sampling line is provided with a sampling terminal, and the sampling line is connected to the corresponding first electrode of the battery through the corresponding sampling terminal; or,
  • the first end of the sampling line is provided with a sampling terminal, and the sampling line is connected to the corresponding second electrode of the battery through the corresponding sampling terminal; or,
  • the first end of the sampling line is provided with a sampling terminal, and the sampling line is connected to the corresponding conductive sheet through the corresponding sampling terminal.
  • the first end of the sampling line is provided with a second bending portion
  • the second bending portion of the sampling line is located between two batteries connected in series
  • the sampling terminal is provided with a second bending portion. on the second bending portion.
  • the opening is provided at the end of the box along the third direction
  • the length of the battery information collector extends along the second direction
  • the width of the battery information collector extends along the third direction.
  • the first direction is the height direction of the box body
  • one of the second direction and the third direction is the length direction of the box body
  • the other is the width of the box body direction.
  • the sampling structure further includes a protective layer covering a plurality of the sampling lines, and the protective layer and the plurality of the sampling lines are configured as FPC or FFC.
  • the battery pack further includes a battery management system and a connection harness
  • the sealing cover includes a base and a cover
  • the base is used to seal the opening of the box
  • the cover is connected to
  • the base is connected to form a sealed accommodating space
  • the battery management system is located in the accommodating space
  • the connecting wire harness runs through the base and connects the battery management system and the battery information collector.
  • the battery is a pouch battery.
  • the present disclosure also provides an electric vehicle, including a body and the battery pack according to any of the above embodiments, the battery pack is fixed on the body, or the box of the battery pack is configured as the part of the body.
  • the casing of the battery pack of the present disclosure is provided with an opening, and the battery information collector is arranged at the opening of the casing, so that the internal space of the casing is not occupied, so it is beneficial to improve the space of the battery pack Utilization rate;
  • the sealing cover is arranged on the outside of the battery information collector, and the sealing cover is used to seal the opening of the box body, so that the sealing cover can be used to seal the box body and the battery information collector. It is beneficial to reduce the number of sealing structural parts and the production cost of the battery pack, and at the same time, the compactness of the structure design of the battery pack can be improved, and the overall size of the battery pack can be reduced.
  • the relevant information of the battery can be collected through the sampling line, and the sampling information can be transmitted to the battery information collector. After being processed by the battery information collector, it is transmitted to the battery management system. Security of package usage.
  • FIG. 1 is a schematic structural diagram of a battery pack provided by an embodiment of the present disclosure
  • FIG. 2 is an exploded view of a battery pack provided by an embodiment of the present disclosure
  • FIG. 3 is another exploded view of the battery pack provided by an embodiment of the present disclosure.
  • Fig. 4 is the partial enlarged view of A place in Fig. 3;
  • FIG. 5 is a schematic diagram of the connection between a sampling line and a battery provided by an embodiment of the present disclosure
  • Fig. 6 is the exploded view of Fig. 5;
  • Fig. 7 is a partial enlarged view at B in Fig. 6;
  • FIG. 8 is a schematic diagram of a connection between a sampling line and a battery information collector provided by an embodiment of the present disclosure
  • Fig. 9 is a partial enlarged view at C in Fig. 8;
  • FIG. 10 is a schematic diagram of a connection between a sampling line and a battery information collector provided by another embodiment of the present disclosure.
  • Fig. 11 is a partial enlarged view at D in Fig. 10;
  • FIG. 12 is a schematic diagram of an electric vehicle provided by an embodiment of the present disclosure.
  • sampling structure 401, sampling line; 402, connecting terminal; 403, sampling terminal; 404, first bending part; 405, second bending part; 406, protective layer; 407, through hole; 4011, first end; 4012, the second end;
  • the present disclosure provides a battery pack 100 , which includes a box body 10 , a sealing cover 20 , a battery string 30 , a sampling structure 40 and a battery information collector 50 for connecting with a battery management system .
  • the battery string 30 and the sampling structure 40 are arranged in the box 10, the battery string 30 includes a plurality of batteries 301 that are electrically connected, and the sampling structure 40 includes a plurality of sampling lines 401.
  • the first end 4011 of the sampling line 401 is connected to the corresponding battery 301 , and the second end 4012 of the sampling line 401 is connected to the battery information collector 50 .
  • the box body 10 is provided with an opening 101 , the battery information collector 50 is arranged at the opening 101 of the box body 10 , the sealing cover 20 is located outside the battery information collector 50 , and the sealing cover 20 is used to seal the opening 101 of the box body 10 .
  • the outer side of the battery information collector 50 refers to the side of the battery information collector 50 away from the inner space of the box body 10 .
  • One end of the sampling line 401 is connected to the corresponding battery 301, and the second end 4012 of the sampling line 401 is connected to the battery information collector 50, so that the sampling line 401 can collect relevant information of the battery 301 and transmit the information to the battery information collector 50.
  • the information After being converted and processed by the battery information collector 50, the information is transmitted to the battery management system, so that the working state of the battery 301 can be monitored, and the safety of the battery pack 100 can be improved.
  • the box body 10 is provided with an opening 101, and the battery information collector 50 is arranged at the opening 101 of the box body 10, so that the internal space of the box body 10 is not occupied, so it is beneficial to improve the battery pack.
  • the sealing of the battery information collector 50 is beneficial to reduce the number of sealing structural parts and the production cost of the battery pack 100 , and at the same time, the compactness of the structural design of the battery pack 100 can be improved, and the overall size of the battery pack 100 can be reduced. .
  • the box body 10 is provided with a partition 60 , and the partition plate 60 divides the internal space of the box body 10 into a plurality of accommodating cavities 70 , and the battery strings 30 are arranged in the accommodating cavities 70
  • the sampling structure 40 With the sampling structure 40 , the first end 4011 of the sampling line 401 in the same accommodating cavity 70 is connected to the corresponding battery 301 , and the second end 4012 of the sampling line 401 in at least part of the accommodating cavity 70 is connected to the battery information collector 50 .
  • one battery information collector 50 can perform conversion processing on the information collected by the sampling lines 401 in the multiple accommodating cavities 70 , thereby reducing the number of battery information collectors 50 in the battery pack 100 , which is beneficial for reducing the cost of the battery pack 100 .
  • the sampling lines 401 in the five accommodating chambers 70 are connected to one battery information collector 50 .
  • the sampling lines 401 in all the accommodating chambers 70 may also be connected to one battery information collector 50 .
  • the second end 4012 of the sampling line 401 is provided with a connection terminal 402
  • the battery information collector 50 is provided with a plurality of pads 501
  • the connection terminal 402 and the pad 501 are provided One-to-one correspondence welding.
  • the reliability of the connection between the sampling line 401 and the battery information collector 50 can be ensured by the welding method, and this method is simple and beneficial to reduce costs.
  • the sampling line 401 is also connected to the battery information collector 50 by plugging.
  • the battery pack 100 further includes a plurality of fuses 90 , the second end 4012 of the sampling line 401 is provided with a connection terminal 402 , and the battery information collector 50 is provided with a plurality of pads 501 , the first end of the fuse 90 is welded to the corresponding connection terminal 402 , and the second end of the fuse 90 is welded to the corresponding pad 501 .
  • the fuse 90 can not only realize the connection between the sampling line 401 and the battery information collector 50, but also play the role of overcurrent protection, which can reduce the number of structural parts, which is beneficial to reduce the cost of the battery pack 100, and also ensures that the Safety of the entire sampling loop.
  • the battery information collector 50 is disposed on one side of the sampling structure 40 , the side of the battery information collector 50 facing the sampling structure 40 is provided with a plurality of pads 501 , and the sampling structure 40 is provided with a plurality of through holes 407 , the connection terminal 402 is disposed on the side of the sampling structure 40 away from the battery information collector 50 , and the fuse 90 is disposed through the through hole 407 to be welded to the pad 501 .
  • the pads 501 on the battery information collector 50 correspondingly connected to the sampling lines 401 in the same accommodating cavity 70 are distributed in multiple rows along the first direction.
  • the direction is the height direction of the box body 10 .
  • the pads 501 on the battery information collector 50 correspondingly connected to the sampling lines 401 in the plurality of accommodating cavities 70 are arranged along the second direction, and the second direction is the length direction of the case 10 or the width direction of the case 10 .
  • the pads 501 on the battery information collector 50 can be arranged more compactly, thereby reducing the size of the battery information collector 50 and saving costs.
  • the first direction is the Z direction in FIG. 3 , and the width direction of the battery information collector 50 may be consistent with the first direction.
  • the second direction is the X direction in FIG. 3 , and the length direction of the battery information collector 50 may be consistent with the second direction.
  • the height direction of the box body 10 may be consistent with the height direction of the electric vehicle 1000
  • the length direction of the box body 10 may be consistent with the length direction of the electric vehicle 1000
  • the width direction of the box 10 may be consistent with the length direction of the electric vehicle 1000
  • the longitudinal direction of the box body 10 may be consistent with the width direction of the electric vehicle 1000
  • the width direction of the box body 10 may be consistent with the longitudinal direction of the electric vehicle 1000 .
  • the plurality of accommodating cavities 70 are arranged in sequence along the second direction, and the plurality of batteries 301 constituting the battery string 30 are arranged in sequence along the third direction and connected in series , the second direction is the length direction of the case 10 , and the third direction is the width direction of the case 10 ; or, the second direction is the width direction of the case 10 , and the third direction is the length direction of the case 10 .
  • the second direction is the X direction in FIG. 3
  • the third direction is the Y direction in FIG. 3 .
  • the battery 301 includes a first electrode 302 and a second electrode 303.
  • the first electrode 302 and the second electrode 303 are distributed on opposite sides of the battery 301 along a third direction.
  • the two batteries are connected in series.
  • the first electrode 302 of one cell 301 and the second electrode 303 of the other cell 301 in 301 are directly connected or connected through a conductive sheet.
  • the first end 4011 of the sampling line 401 is provided with a sampling terminal 403 , and the sampling line 401 is connected to the first electrode 302 of the corresponding battery 301 through the corresponding sampling terminal 403 .
  • the difference from the above embodiments is that the sampling line 401 is connected to the second electrode 303 of the corresponding battery 301 through the corresponding sampling terminal 403 .
  • the difference from the above-mentioned embodiments is that the sampling line 401 is connected to the corresponding conductive sheet through the corresponding sampling terminal 403 .
  • the sampling structures 40 in the plurality of accommodating cavities 70 are arranged along the second direction, and the sampling structures 40 in the same accommodating cavity 70 are arranged on the battery string 30 along the first direction
  • the first direction is the height direction of the box body 10
  • the second direction is the length direction or the width direction of the box body 10 .
  • the second end 4012 of the sampling line 401 is provided with a first bending portion 404
  • the connecting terminal 402 is provided on the first bending portion 404
  • the battery information collector 50 It is arranged on one side of the first bending portion 404 .
  • the sampling line 401 adopts this bending structure design, which is beneficial to the welding with the battery information collector 50 .
  • the first end 4011 of the sampling line 401 is provided with a second bending portion 405 , and the second bending portion 405 of the sampling line 401 is located between the two batteries 301 connected in series In between, the sampling terminal 403 is provided on the second bending portion 405 . Adopting this structure design facilitates the connection between the sampling line 401 and the first electrode 302 or the second electrode 303 or the conductive sheet.
  • the protective layer 406 is provided with a plurality of escape openings, and the portion of the sampling wire 401 exposed to the corresponding escape opening constitutes the connection terminal 402 .
  • the sampling structure 40 further includes a protective layer 406 covering the plurality of sampling lines 401 , and the first part of the sampling lines 401 extends out of the protective layer 406 to form the connection terminals 402 .
  • the sampling line 401 is a metal conductor.
  • the sampling structure 40 further includes a protective layer 406 covering the plurality of sampling lines 401 , and the second part of the sampling lines 401 extends out of the protective layer 406 to form the sampling terminal 403 ;
  • the second part of the sampling wire 401 is exposed to the protective layer 406 and welded with the sampling terminal 403 .
  • the sampling line 401 is a metal conductor, and the connecting terminal 402 is a metal sheet.
  • the sampling line 401 may be formed by etching or die cutting of metal foil.
  • the sampling structure 40 further includes a protective layer 406 covering the plurality of sampling lines 401, and the protective layer 406 and the plurality of sampling lines 401 are configured as FPC (Flexible Printed Circuit, flexible circuit board) or FFC (Flexible Flat Cable, flexible flat cable).
  • FPC Flexible Printed Circuit, flexible circuit board
  • FFC Flexible Flat Cable, flexible flat cable
  • the FPC includes a metal foil and a protective film covering both sides of the metal foil.
  • the metal foil is etched to form a plurality of sampling lines 401 , and the protective film constitutes a protective layer 406 .
  • the FFC includes a plurality of metal conductors and insulating films covering both sides of the metal conductors, the metal conductors are bonded between the two insulating films, the metal conductors form the sampling line 401 , and the insulating films form the protective layer 406 .
  • a sampling structure 40 and a plurality of electrically connected battery strings 30 are arranged in the accommodating cavity 70 , and the sampling lines 401 in the same accommodating cavity 70 are correspondingly connected to the batteries 301 constituting the plurality of battery strings 30 .
  • the batteries 301 in the same accommodating cavity 70 can be sampled through the sampling lines 401 in the same accommodating cavity 70 , thereby facilitating the simplification of the arrangement of the sampling lines 401 in each accommodating cavity 70 .
  • the plurality of battery strings 30 in the same accommodating cavity 70 are sequentially arranged along the second direction and connected in series.
  • connection of the two batteries 301 connected in series with the two battery strings 30 is similar to the connection of the two batteries 301 connected in series in the battery string 30.
  • the sampling line 401 and the two batteries 30 connected in series with the two batteries 30 The connection between the batteries 301 is similar to the connection between the sampling line 401 and the two batteries 301 connected in series in the battery string 30 , and details are not repeated here.
  • two battery strings 30 are arranged in the same accommodating cavity 70 , and the two battery strings 30 in the same accommodating cavity 70 are arranged in sequence along the first direction and connected in series.
  • the plurality of battery strings 30 in the same accommodating cavity 70 may also be arranged in sequence along the second direction and connected in parallel.
  • an opening 101 is provided at the end of the box body 10 along the third direction, the length of the battery information collector 50 extends along the second direction, and the width of the battery information collector 50 extends along the second direction.
  • the first direction is the height direction of the box body 10
  • one of the second direction and the third direction is the length direction of the box body 10
  • the other is the width direction of the box body 10 .
  • the battery pack 100 further includes a battery management system and a connecting wire harness
  • the sealing cover 20 includes a base 201 and a cover 202
  • the base 201 is used to seal the opening 101 of the case 10
  • the cover 202 It is connected with the base 201 to form a sealed accommodating space
  • the battery management system is located in the accommodating space
  • the connecting wire harness runs through the base 201 and connects the battery management system and the battery information collector 50 .
  • the sealing cover 20 can realize the sealing of the box body 10 and the sealing of the battery management system, so that the number of structural parts can be sealed, which is beneficial to reduce the cost.
  • the battery pack 100 further includes an insulating support 80 disposed at the opening 101 of the box body 10 , and the battery information collector 50 is fixed to the outside of the insulating support 80 .
  • the outer side of the insulating support 80 refers to the side of the insulating support 80 away from the inner space of the box body 10 .
  • the battery 301 is a pouch battery.
  • the battery 301 can also be a cylindrical battery.
  • the casing of the battery 301 can also be a metal casing.
  • the present disclosure also provides an electric vehicle 1000 , which includes a body 200 and the above-mentioned battery pack 100 , where the battery pack 100 is fixed on the body 200 , or the case 10 of the battery pack 100 It is constituted as a part of the vehicle body 200 .
  • the box body 10 of the battery pack 100 is provided with an opening 101, and the battery information collector 50 is arranged at the opening 101 of the box body 10, so that the internal space of the box body 10 is not occupied, so there are It is beneficial to improve the space utilization rate of the battery pack 100; the sealing cover 20 is arranged on the outer side of the battery information collector 50, and the sealing cover 20 is used to seal the opening 101 of the box body 10, so that the sealing cover 20 can realize the sealing of the box body 10.
  • the battery information collector 50 can also seal the battery information collector 50, which is beneficial to reduce the number of sealing structural parts, reduce the production cost of the battery pack 100, and at the same time can improve the compactness of the structure design of the battery pack 100, which is conducive to reducing the battery pack. 100 overall size.
  • the relevant information of the battery 301 can be collected through the sampling line 401, and the sampling information can be transmitted to the battery information collector 50. After being processed by the battery information collector 50, it can be transmitted to the battery management system, and then the working status of the battery 301 can be checked. Monitoring can improve the safety of using the battery pack 100 .
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

提供了一种电池包(100)和电动车(1000)，电池包(100)包括箱体(10)、密封盖(20)、电池串(30)、采样结构(40)和用于与电池管理系统连接的电池信息采集器(50)；电池串(30)和采样结构(40)设于箱体(10)内，电池串(30)包括多个电连接的电池(301)，采样结构(40)包括多个采样线(401)，采样线(401)的第一端(4011)与对应的电池(301)连接，采样线(401)的第二端(4012)与电池信息采集器(50)连接；箱体(10)设有开口(101)，电池信息采集器(50)设于箱体(10)的开口(101)处，密封盖(20)位于电池信息采集器(50)的外侧，密封盖(20)用于密封箱体(10)的开口(101)。电池信息采集器(50)设置在箱体(10)的开口(101)处，不会占用箱体(10)的内部空间，通过密封盖(20)既可以实现对箱体(10)的密封，又可以实现对电池信息采集器(50)的密封，有利于降低生产成本。

Description

电池包和电动车
本公开要求于2021年03月30日提交中国专利局，申请号为202120653607.5，申请名称为“电池包和电动车”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及电池领域，尤其涉及一种电池包和电动车。
背景技术
相关技术中，采样结构用于采集电池的电压和/温度等信息，并将采集信息传送给电池信息采集器，经电池信息采集器进行转换处理后发送给电池管理系统。
目前，电池信息采集器一般布置在电池包的壳体外，这种布置方式不仅会导致电池包的整体结构尺寸增大，而且还需要对电池信息采集器单独进行密封，导致电池包的成本增加。
发明内容
本公开内容旨在至少解决现有技术中存在的问题之一。为此，在本公开的第一个方面，提供一种电池包，所述电池包包括箱体、密封盖、电池串、采样结构和用于与电池管理系统连接的电池信息采集器；
所述电池串和所述采样结构设于所述箱体内，所述电池串包括多个电连接的电池，所述采样结构包括多个采样线，所述采样线的第一端与对应的所述电池连接，所述采样线的第二端与所述电池信息采集器连接；
所述箱体设有开口，所述电池信息采集器设于所述箱体的开口处，所述密封盖位于所述电池信息采集器的外侧，所述密封盖用于密封所述箱体的开口。
在本公开的一些实施例中，所述箱体内设有隔板，所述隔板将所述箱体的内部空间分隔成多个容纳腔，所述容纳腔内设有所述电池串和所述采样结构，同一所述容纳腔内的所述采样线的第一端和对应的所述电池连接，至少部分所述容纳腔内的所述采样线的第二端与所述电池信息采集器连接。
在本公开的一些实施例中，所述采样线的第二端设有连接端子，所述电池信息采集器上设有多个焊盘，所述连接端子与所述焊盘一一对应焊接。
在本公开的一些实施例中，所述电池包还包括多个保险丝，所述采样线的第二端设有连接端子，所述电池信息采集器上设有多个焊盘，所述保险丝的第一端和对应的所述连接端子焊接，所述保险丝的第二端和对应的所述焊盘焊接。
在本公开的一些实施例中，所述电池信息采集器上与同一所述容纳腔内采样线对应连接的焊盘沿第一方向呈多排分布，所述第一方向为所述箱体的高度方向；
所述电池信息采集器上与多个容纳腔内采样线对应连接的焊盘沿第二方向排布，所述第二方向为所述箱体的长度方向或所述箱体的宽度方向。
在本公开的一些实施例中，所述采样线的第二端设有第一弯折部，所述连接端子设于所述第一弯折部上，所述电池信息采集器设于所述第一弯折部的一 侧。
在本公开的一些实施例中，多个所述容纳腔沿第二方向依次排布，构成所述电池串的多个所述电池沿第三方向依次排布且串联连接，所述第二方向为所述箱体的长度方向，所述第三方向为所述箱体的宽度方向；或者，所述第二方向为所述箱体的宽度方向，所述第三方向为所述箱体的长度方向。
在本公开的一些实施例中，所述电池包括第一电极和第二电极，所述第一电极和所述第二电极沿所述第三方向分布于所述电池相对的两侧，串联连接的两个电池中的一个电池的第一电极和另一个电池的第二电极直接连接或通过导电片连接；
所述采样线的第一端设有采样端子，所述采样线通过对应的所述采样端子与对应的所述电池的第一电极连接；或者，
所述采样线的第一端设有采样端子，所述采样线通过对应的所述采样端子与对应的所述电池的第二电极连接；或者，
所述采样线的第一端设有采样端子，所述采样线通过对应的所述采样端子与对应的所述导电片连接。
在本公开的一些实施例中，所述采样线的第一端设有第二弯折部，所述采样线的第二弯折部位于串联连接的两个电池之间，所述采样端子设于所述第二弯折部上。
在本公开的一些实施例中，所述箱体沿第三方向的端部设有所述开口，所述电池信息采集器的长度沿第二方向延伸，所述电池信息采集器的宽度沿第一方向延伸，所述第一方向为所述箱体的高度方向，所述第二方向和所述第三方向中的一个为所述箱体的长度方向，另一个为所述箱体的宽度方向。
在本公开的一些实施例中，所述采样结构还包括包覆于多个所述采样线的防护层，所述防护层和多个所述采样线构造为FPC或FFC。
在本公开的一些实施例中，所述电池包还包括电池管理系统和连接线束，所述密封盖包括底座和盖体，所述底座用于密封所述箱体的开口，所述盖体与所述底座连接以形成密封的容纳空间，所述电池管理系统位于所述容纳空间内，所述连接线束贯穿于所述底座且连接所述电池管理系统和所述电池信息采集器。
在本公开的一些实施例中，所述电池为软包电池。
另一方面，本公开还提供一种电动车，包括车身和上述任意实施例所述的电池包，所述电池包固定于所述车身上，或者，所述电池包的箱体构成为所述车身的一部分。
本公开的有益效果为：本公开的电池包的箱体上设有开口，电池信息采集器设置在箱体的开口处，这样不会占用箱体的内部空间，因此有利于提高电池包的空间利用率；密封盖设于电池信息采集器的外侧，密封盖用于密封箱体的开口，这样通过密封盖既可以实现对箱体的密封，又可以实现对电池信息采集器的密封，从而有利于减少密封结构件的数量，降低电池包的生产成本，同时还可以提升电池包结构设计的紧凑性，有利于减小电池包的整体尺寸。此外，通过采样线可以采集电池的相关信息，并将该采样信息传输给电池信息采集器，经过电池信息采集器处理后传输给电池管理系统，进而可对电池的工作状态进行监控，可提高电池包使用的安全性。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
图1是本公开实施例提供电池包的结构示意图；
图2是本公开实施例提供的电池包的爆炸图；
图3是本公开实施例提供的电池包的另一爆炸图；
图4是图3中A处的局部放大图；
图5是本公开实施例提供的采样线与电池连接的示意图；
图6是图5的爆炸图；
图7是图6中B处的局部放大图；
图8是本公开一实施例提供的采样线与电池信息采集器连接的示意图；
图9是图8中C处的局部放大图；
图10本公开另一实施例提供的采样线与电池信息采集器连接的示意图；
图11是图10中D处的局部放大图；
图12是本公开实施例提供的电动车的示意图。
附图标记：
1000、电动车；
100、电池包；200、车身；
10、箱体；101、开口；
20、密封盖；201、底座；202、盖体；
30、电池串；301、电池；302、第一电极；303、第二电极；
40、采样结构；401、采样线；402、连接端子；403、采样端子；404、第 一弯折部；405、第二弯折部；406、防护层；407、贯通孔；4011、第一端；4012、第二端；
50、电池信息采集器；501、焊盘；
60、隔板；
70、容纳腔；
80、绝缘支架；
90、保险丝。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
如图1至图7所示，本公开提供了一种电池包100，其包括箱体10、密封盖20、电池串30、采样结构40和用于与电池管理系统连接的电池信息采集器50。电池串30和采样结构40设于箱体10内，电池串30包括多个电连接的电 池301，采样结构40包括多个采样线401。采样线401的第一端4011与对应的电池301连接，采样线401的第二端4012与电池信息采集器50连接。箱体10设有开口101，电池信息采集器50设于箱体10的开口101处，密封盖20位于电池信息采集器50的外侧，密封盖20用于密封箱体10的开口101。
其中，电池信息采集器50的外侧是指电池信息采集器50背离箱体10的内部空间的一侧。采样线401的一端与对应的电池301连接，采样线401的第二端4012与电池信息采集器50连接，这样采样线401可以采集电池301的相关信息，并将该信息传输给电池信息采集器50，经电池信息采集器50转换处理后传输给电池管理系统，进而可监控电池301的工作状态，提高电池包100使用的安全性。
本公开提供的电池包100，其箱体10上设有开口101，电池信息采集器50设置在箱体10的开口101处，这样不会占用箱体10的内部空间，因此有利于提高电池包100的空间利用率；密封盖20设于电池信息采集器50的外侧，密封盖20用于密封箱体10的开口101，这样通过密封盖20既可以实现对箱体10的密封，又可以实现对电池信息采集器50的密封，从而有利于减少密封结构件的数量，降低电池包100的生产成本，同时还可以提升电池包100结构设计的紧凑性，有利于减小电池包100的整体尺寸。
在一些实施例中，如图3至图6，箱体10内设有隔板60，隔板60将箱体10的内部空间分隔成多个容纳腔70，容纳腔70内设有电池串30和采样结构40，同一容纳腔70内的采样线401的第一端4011和对应的电池301连接，至少部分容纳腔70内的采样线401的第二端4012与电池信息采集器50连接。这样，通过一个电池信息采集器50可以对多个容纳腔70内采样线401采集的 信息进行转换处理，从而可以减少电池包100中电池信息采集器50的数量，有利于降低电池包100的成本。如图3所示，五个容纳腔70内的采样线401与一个电池信息采集器50连接。当然，在其他实施例中，也可以是所有容纳腔70内采样线401与一个电池信息采集器50连接。
在一些实施例中，如图10和图11所示，采样线401的第二端4012设有连接端子402，电池信息采集器50上设有多个焊盘501，连接端子402与焊盘501一一对应焊接。通过焊接方式可以保证采样线401与电池信息采集器50连接的可靠性，并且这种方式简便，有利于降低成本。当然，在其他实施例中，采样线401也通过插接的方式与电池信息采集器50连接。
在另一些实施例中，如图9所示，电池包100还包括多个保险丝90，采样线401的第二端4012设有连接端子402，电池信息采集器50上设有多个焊盘501，保险丝90的第一端和对应的连接端子402焊接，保险丝90的第二端和对应的焊盘501焊接。通过保险丝90不仅可以实现采样线401与电池信息采集器50的连接，还可以起到过流保护的作用，这样可以减小结构件的数量，有利于降低电池包100的成本，同时还可保证整个采样回路的安全性。
如图9所示，电池信息采集器50设于采样结构40的一侧，电池信息采集器50面向采样结构40的一侧设有多个焊盘501，采样结构40上设有多个贯通孔407，连接端子402设于采样结构40背离电池信息采集器50的一侧，保险丝90穿设于贯通孔407与焊盘501焊接。
在一些实施例中，如图3、图4和图9所示，电池信息采集器50上与同一容纳腔70内采样线401对应连接的焊盘501沿第一方向呈多排分布，第一方向为箱体10的高度方向。电池信息采集器50上与多个容纳腔70内采样线 401对应连接的焊盘501沿第二方向排布，第二方向为箱体10的长度方向或箱体10的宽度方向。如此设置，可使电池信息采集器50上的焊盘501排布更加紧凑，从而有利于减小电池信息采集器50的尺寸，节约成本。
其中，第一方向为图3中Z方向，电池信息采集器50的宽度方向可以与第一方向一致。第二方向为图3中X方向，电池信息采集器50的长度方向可以与第二方向一致。
可以理解的，当电池包100安装于电动车1000的车身200上时，箱体10的高度方向可以与电动车1000的高度方向一致，箱体10的长度方向可以与电动车1000的长度方向一致，箱体10的宽度方向可以与电动车1000的长度方向一致。或者，箱体10的长度方向可以与电动车1000的宽度方向一致，箱体10的宽度方向可以与电动车1000的长度方向一致。
在一些实施例中，如图3、图4和图5所示，多个容纳腔70沿第二方向依次排布，构成电池串30的多个电池301沿第三方向依次排布且串联连接，第二方向为箱体10的长度方向，第三方向为箱体10的宽度方向；或者，第二方向为箱体10的宽度方向，第三方向为箱体10的长度方向。其中，第二方向为图3中X方向，第三方向为图3中Y方向。
如图5和图7所示，电池301包括第一电极302和第二电极303，第一电极302和第二电极303沿第三方向分布于电池301相对的两侧，串联连接的两个电池301中的一个电池301的第一电极302和另一个电池301的第二电极303直接连接或通过导电片连接。
在一些实施例中，采样线401的第一端4011设有采样端子403，采样线401通过对应的采样端子403与对应的电池301的第一电极302连接。
在另一些实施例中，与上述实施例不同之处在于：采样线401通过对应的采样端子403与对应的电池301的第二电极303连接。
在另一些实施例中，与上述实施例不同之处在于：采样线401通过对应的采样端子403与对应的导电片连接。
在一些实施例中，如图3和图5所示，多个容纳腔70内的采样结构40沿第二方向排布，同一容纳腔70内的采样结构40设于电池串30沿第一方向的一侧，第一方向为箱体10的高度方向，第二方向为箱体10的长度方向或宽度方向。
在一些实施例中，如图6至图9所示，采样线401的第二端4012设有第一弯折部404，连接端子402设于第一弯折部404上，电池信息采集器50设于第一弯折部404的一侧。采样线401采用这种弯折结构设计，有利于其与电池信息采集器50的焊接。
在一些实施例中，如图6和图7所示，采样线401的第一端4011设有第二弯折部405，采样线401的第二弯折部405位于串联连接的两个电池301之间，采样端子403设于第二弯折部405上。采用这种结构设计便于采样线401与第一电极302或第二电极303或导电片的连接。
在一些实施例中，如图9所示，防护层406上设有多个避让口，采样线401暴露于对应的避让口中的部分构成连接端子402。
在另一些实施例中，如图11所示，采样结构40还包括包覆于多个采样线401的防护层406，采样线401的第一部分延伸出防护层406以形成连接端子402。其中，采样线401为金属导体。
在一些实施例中，如图6和图7所示，采样结构40还包括包覆于多个采 样线401的防护层406，采样线401的第二部分延伸出防护层406以形成采样端子403；
在另一些实施例中，采样线401的第二部分外露于防护层406并与采样端子403焊接。
其中，采样线401为金属导体，连接端子402为金属片。另外，采样线401可以由金属箔蚀刻或模切形成。
在一些实施例中，采样结构40还包括包覆于多个采样线401的防护层406，防护层406和多个采样线401构造为FPC(Flexible Printed Circuit，柔性电路板)或FFC(Flexible Flat Cable，柔性扁平电缆)。
其中，FPC包括金属箔和覆盖在金属箔两侧的防护膜，金属箔通过蚀刻形成多个采样线401，防护膜构成防护层406。
FFC包括多个金属导体和覆盖在金属导体两侧的绝缘膜，金属导体粘接在两绝缘膜之间，金属导体构成采样线401，绝缘膜构成防护层406。
在一些实施例中，容纳腔70内设有一个采样结构40和多个电连接的电池串30，同一容纳腔70内的采样线401和构成多个电池串30的电池301对应连接。这样，通过同一容纳腔70内的采样线401就可对该容纳腔70内的电池301进行采样，从而有利于简化各个容纳腔70内采样线401的布置。
在一些实施例中，同一容纳腔70内的多个电池串30沿第二方向依次排布且串联连接。
需要说明的是，串联连接两个电池串30的两个电池301的连接与电池串30中串联连接的两个电池301的连接方式类似，采样线401和串联连接两个电池串30的两个电池301之间的连接方式与采样线401和电池串30中串联连 接的两个电池301的连接方式类似，在此不再赘述。例如，同一容纳腔70内设有两个电池串30，同一容纳腔70内的两个电池串30沿第一方向依次排布且串联连接。
当然，同一容纳腔70内的多个电池串30也可以是沿第二方向依次排布且并联连接。
在一些实施例中，如图2至图4所示，箱体10沿第三方向的端部设有开口101，电池信息采集器50的长度沿第二方向延伸，电池信息采集器50的宽度沿第一方向延伸，第一方向为箱体10的高度方向，第二方向和第三方向中的一个为箱体10的长度方向，另一个为箱体10的宽度方向。
在一些实施例中，如图2所示，电池包100还包括电池管理系统和连接线束，密封盖20包括底座201和盖体202，底座201用于密封箱体10的开口101，盖体202与底座201连接以形成密封的容纳空间，电池管理系统位于容纳空间内，连接线束贯穿于底座201且连接电池管理系统和电池信息采集器50。这样通过密封盖20既可以实现对箱体10的密封，又可以实现对电池管理系统的密封，从而可以密封结构件的数量，有利于降低成本。
在一些实施例中，如图2至图4所示，电池包100还包括设于箱体10的开口101处的绝缘支架80，电池信息采集器50固定于绝缘支架80的外侧。其中，绝缘支架80的外侧是指绝缘支架80背离箱体10的内部空间的一侧。
在一些实施例中，电池301为软包电池。当然，在其他实施例中，电池301也可为圆柱电池。或者，电池301的壳体也可为金属壳体。
另一方面，如图12所示，本公开还提供了一种电动车1000，其包括车身200和上述的电池包100，电池包100固定于车身200上，或者，电池包100 的箱体10构成为车身200的一部分。本公开提供的电动车1000，其电池包100的箱体10上设有开口101，电池信息采集器50设置在箱体10的开口101处，这样不会占用箱体10的内部空间，因此有利于提高电池包100的空间利用率；密封盖20设于电池信息采集器50的外侧，密封盖20用于密封箱体10的开口101，这样通过密封盖20既可以实现对箱体10的密封，又可以实现对电池信息采集器50的密封，从而有利于减少密封结构件的数量，降低电池包100的生产成本，同时还可以提升电池包100结构设计的紧凑性，有利于减小电池包100的整体尺寸。此外，通过采样线401可以采集电池301的相关信息，并将该采样信息传输给电池信息采集器50，经过电池信息采集器50处理后传输给电池管理系统，进而可对电池301的工作状态进行监控，可提高电池包100使用的安全性。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
在本说明书的描述中，参考术语“实施例”、“具体实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理 解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (14)

  1. 一种电池包(100)，其特征在于，所述电池包(100)包括箱体(10)、密封盖(20)、电池串(30)、采样结构(40)和用于与电池管理系统连接的电池信息采集器(50)；
    所述电池串(30)和所述采样结构(40)设于所述箱体(10)内，所述电池串(30)包括多个电连接的电池(301)，所述采样结构(40)包括多个采样线(401)，所述采样线(401)的第一端(4011)与对应的所述电池(301)连接，所述采样线(401)的第二端(4012)与所述电池信息采集器(50)连接；
    所述箱体(10)设有开口(101)，所述电池信息采集器(50)设于所述箱体(10)的开口(101)处，所述密封盖(20)位于所述电池信息采集器(50)的外侧，所述密封盖(20)用于密封所述箱体(10)的开口(101)。
  2. 根据权利要求1所述的电池包(100)，其特征在于，所述箱体(10)内设有隔板(60)，所述隔板(60)将所述箱体(10)的内部空间分隔成多个容纳腔(70)，所述容纳腔(70)内设有所述电池串(30)和所述采样结构(40)，同一所述容纳腔(70)内的所述采样线(401)的第一端(4011)和对应的所述电池(301)连接，至少部分所述容纳腔(70)内的所述采样线(401)的第二端(4012)与所述电池信息采集器(50)连接。
  3. 根据权利要求2所述的电池包(100)，其特征在于，所述采样线(401)的第二端(4012)设有连接端子(402)，所述电池信息采集器(50)上设有多个焊盘(501)，所述连接端子(402)与所述焊盘(501)一一对应焊接。
  4. 根据权利要求2所述的电池包(100)，其特征在于，所述电池包(100)还包括多个保险丝(90)，所述采样线(401)的第二端(4012)设有连接端子(402)，所述电池信息采集器(50)上设有多个焊盘(501)，所述保险丝(90)的第一端和对应的所述连接端子(402)焊接，所述保险丝(90)的第二端和对应的所述焊盘(501)焊接。
  5. 根据权利要求3或4所述的电池包(100)，其特征在于,所述电池信息采集器(50)上与同一所述容纳腔(70)内采样线(401)对应连接的焊盘(501)沿第一方向呈多排分布，所述第一方向为所述箱体(10)的高度方向；
    所述电池信息采集器(50)上与多个容纳腔(70)内采样线(401)对应连接的焊盘(501)沿第二方向排布，所述第二方向为所述箱体(10)的长度方向或所述箱体(10)的宽度方向。
  6. 根据权利要求3或4所述的电池包(100)，其特征在于，所述采样线(401)的第二端(4012)设有第一弯折部(404)，所述连接端子(402)设于所述第一弯折部(404)上，所述电池信息采集器(50)设于所述第一弯折部(404)的一侧。
  7. 根据权利要求2所述的电池包(100)，其特征在于，多个所述容纳腔(70)沿第二方向依次排布，构成所述电池串(30)的多个所述电池(301)沿第三方向依次排布且串联连接，所述第二方向为所述箱体(10)的长度方向， 所述第三方向为所述箱体(10)的宽度方向；或者，所述第二方向为所述箱体(10)的宽度方向，所述第三方向为所述箱体(10)的长度方向。
  8. 根据权利要求7所述的电池包(100)，其特征在于，所述电池(301)包括第一电极(302)和第二电极(303)，所述第一电极(302)和所述第二电极(303)沿所述第三方向分布于所述电池(301)相对的两侧，串联连接的两个电池(301)中的一个电池(301)的第一电极(302)和另一个电池(301)的第二电极(303)直接连接或通过导电片连接；
    所述采样线(401)的第一端(4011)设有采样端子(403)，所述采样线(401)通过对应的所述采样端子(403)与对应的所述电池(301)的第一电极(302)连接；或者，
    所述采样线(401)的第一端(4011)设有采样端子(403)，所述采样线(401)通过对应的所述采样端子(403)与对应的所述电池(301)的第二电极(303)连接；或者，
    所述采样线(401)的第一端(4011)设有采样端子(403)，所述采样线(401)通过对应的所述采样端子(403)与对应的所述导电片连接。
  9. 根据权利要求8所述的电池包(100)，其特征在于，所述采样线(401)的第一端(4011)设有第二弯折部(405)，所述采样线(401)的第二弯折部(405)位于串联连接的两个电池之间，所述采样端子(403)设于所述第二弯折部(405)上。
  10. 根据权利要求1-9任一项所述的电池包(100)，其特征在于，所述箱体(10)沿第三方向的端部设有所述开口(101)，所述电池信息采集器(50)的长度沿第二方向延伸，所述电池信息采集器(50)的宽度沿第一方向延伸，所述第一方向为所述箱体(10)的高度方向，所述第二方向和所述第三方向中的一个为所述箱体(10)的长度方向，另一个为所述箱体(10)的宽度方向。
  11. 根据权利要求1-9任一项所述的电池包(100)，其特征在于，所述采样结构(40)还包括包覆于多个所述采样线(401)的防护层(406)，所述防护层(406)和多个所述采样线(401)构造为FPC或FFC。
  12. 根据权利要求1-9任一项所述的电池包(100)，其特征在于，所述电池包(100)还包括电池管理系统和连接线束，所述密封盖(20)包括底座(201)和盖体(202)，所述底座(201)用于密封所述箱体(10)的开口(101)，所述盖体(202)与所述底座(201)连接以形成密封的容纳空间，所述电池管理系统位于所述容纳空间内，所述连接线束贯穿于所述底座(201)且连接所述电池管理系统和所述电池信息采集器(50)。
  13. 根据权利要求1-9任一项所述的电池包(100)，其特征在于，所述电池为软包电池。
  14. 一种电动车(1000)，其特征在于，包括车身(200)和如权利要求1-13任一项所述的电池包(100)，所述电池包(100)固定于所述车身上，或 者，所述电池包(100)的箱体(10)构成为所述车身的一部分。
PCT/CN2022/084078 2021-03-30 2022-03-30 电池包和电动车 Ceased WO2022206840A1 (zh)

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214706124U (zh) * 2021-03-30 2021-11-12 比亚迪股份有限公司 电池包和电动车
CN116742290A (zh) * 2022-03-04 2023-09-12 比亚迪股份有限公司 一种电芯组件、电池包及车辆
CN115621678B (zh) * 2022-12-19 2024-07-16 比亚迪股份有限公司 采样防护结构、电池和车辆
US20250141013A1 (en) * 2023-10-30 2025-05-01 Kubota Corporation Electric work vehicle
US12570162B2 (en) * 2023-10-30 2026-03-10 Kubota Corporation Electric work vehicle
US20250141019A1 (en) * 2023-10-30 2025-05-01 Kubota Corporation Electric work vehicle
US20250135917A1 (en) * 2023-10-30 2025-05-01 Kubota Corporation Electric work vehicle
CN222927740U (zh) * 2024-03-21 2025-05-30 宁德时代新能源科技股份有限公司 电池、电池单体及用电装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208298881U (zh) * 2018-02-08 2018-12-28 比亚迪股份有限公司 动力电池包及车辆
CN109994798A (zh) * 2017-12-26 2019-07-09 Sk新技术株式会社 电池模块及其制造方法
WO2020063738A1 (zh) * 2018-09-30 2020-04-02 宁德时代新能源科技股份有限公司 一种电池模组、电池箱及汽车
CN210607406U (zh) * 2019-11-28 2020-05-22 北京普莱德新能源电池科技有限公司 一种车辆电池pack结构以及车辆
CN111312964A (zh) * 2020-04-24 2020-06-19 比亚迪股份有限公司 电池包及电动车
CN214706024U (zh) * 2021-03-30 2021-11-12 比亚迪股份有限公司 采样结构、电池包和电动车
CN214706124U (zh) * 2021-03-30 2021-11-12 比亚迪股份有限公司 电池包和电动车

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5508923B2 (ja) 2010-04-09 2014-06-04 日立ビークルエナジー株式会社 蓄電モジュール
WO2012157094A1 (ja) * 2011-05-18 2012-11-22 日立ビークルエナジー株式会社 蓄電装置
KR101469518B1 (ko) 2011-08-01 2014-12-05 주식회사 엘지화학 안전성이 향상된 전지모듈
KR102140311B1 (ko) 2017-04-07 2020-07-31 주식회사 엘지화학 배터리 모듈과 이를 포함하는 배터리 팩 및 자동차
KR102354401B1 (ko) 2018-04-25 2022-01-20 주식회사 엘지에너지솔루션 배터리 모듈 및 이를 포함하는 배터리 팩
CN113994534B (zh) * 2019-07-10 2024-04-02 本田技研工业株式会社 蓄电模块及蓄电模块的制造方法
CN114744374B (zh) * 2021-01-07 2023-05-05 比亚迪股份有限公司 电池及电池包
CN214848917U (zh) * 2021-03-31 2021-11-23 力神动力电池系统有限公司 一种电池模组

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109994798A (zh) * 2017-12-26 2019-07-09 Sk新技术株式会社 电池模块及其制造方法
CN208298881U (zh) * 2018-02-08 2018-12-28 比亚迪股份有限公司 动力电池包及车辆
WO2020063738A1 (zh) * 2018-09-30 2020-04-02 宁德时代新能源科技股份有限公司 一种电池模组、电池箱及汽车
CN210607406U (zh) * 2019-11-28 2020-05-22 北京普莱德新能源电池科技有限公司 一种车辆电池pack结构以及车辆
CN111312964A (zh) * 2020-04-24 2020-06-19 比亚迪股份有限公司 电池包及电动车
CN214706024U (zh) * 2021-03-30 2021-11-12 比亚迪股份有限公司 采样结构、电池包和电动车
CN214706124U (zh) * 2021-03-30 2021-11-12 比亚迪股份有限公司 电池包和电动车

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4254628A4

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