WO2023103408A1 - Appareil d'acquisition d'informations pour module de batterie, et module de batterie - Google Patents

Appareil d'acquisition d'informations pour module de batterie, et module de batterie Download PDF

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Publication number
WO2023103408A1
WO2023103408A1 PCT/CN2022/108463 CN2022108463W WO2023103408A1 WO 2023103408 A1 WO2023103408 A1 WO 2023103408A1 CN 2022108463 W CN2022108463 W CN 2022108463W WO 2023103408 A1 WO2023103408 A1 WO 2023103408A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery module
circuit board
flexible circuit
section
collection device
Prior art date
Application number
PCT/CN2022/108463
Other languages
English (en)
Chinese (zh)
Inventor
马进司
Original Assignee
湖北亿纬动力有限公司
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 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2023103408A1 publication Critical patent/WO2023103408A1/fr

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    • 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
    • H01M50/20—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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 application relates to the field of battery technology, for example, to a battery module information collection device and a battery module.
  • Flexible Printed Circuit is a highly reliable flexible printed circuit board made of polyimide or polyester film as the base material.
  • most of the voltage and temperature signals of the battery module are collected in the form of arranging multiple flexible circuit boards or wiring in the middle of the battery module. Using the above method makes the space utilization rate of the wiring in the middle of the battery module not high, and at the same time It will increase the raw material cost of the flexible circuit board.
  • the application provides a battery module information collection device and a battery module, which are simple in structure, easy to produce, reduce waste of raw material costs, and have a high space utilization rate of the battery module.
  • the present application provides a battery module information collection device, which includes an insulating support and a flexible circuit board, the flexible circuit board is folded into a U-shaped strip, and the two extension sections of the U-shaped strip are arranged along the first direction and set up on the On the insulating support, the flexible circuit board is strip-shaped when unfolded, and the flexible circuit board is configured to collect battery information.
  • the present application provides a battery module, including a plurality of battery cells and the battery module information collection device described in any one of the above technical solutions.
  • FIG. 1 is a schematic structural diagram of a battery module information collection device provided in an embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a flexible circuit board provided by an embodiment of the present application.
  • Fig. 3 is an enlarged view of part A in Fig. 1;
  • Fig. 4 is a schematic structural diagram of a battery module provided by an embodiment of the present application.
  • Insulation bracket 10. Avoidance hole; 11. First hot riveting post; 12. Second hot riveting post; 2. Flexible circuit board; 21. First section; 22. Second section; 23. Transition section; 24 , the first folding part; 25, the second folding part; 26, the connecting section; 27, the waist hole;
  • connection should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or a Electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or a Electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but pass between them. additional feature contacts.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • this embodiment provides a battery module information collection device
  • the battery module information collection device includes an insulating support 1 and a flexible circuit board 2
  • the flexible circuit board 2 is folded into a U-shaped strip, and the U-shaped
  • the two extensions of the shaped strip are arranged along the first direction and are erected on the insulating support 1
  • the flexible circuit board 2 is strip-shaped when unfolded.
  • a complete flexible circuit board 2 raw material can be completely divided into multiple flexible circuit boards 2, so that the utilization rate of raw materials is maximized; folded into a U-shaped strip so that the flexible circuit board 2 mounted on the insulating support 1 has two interconnected
  • the conductive circuit is convenient for subsequent assembly into the battery module, and realizes the function of the battery module information collection device in the battery module.
  • a plurality of avoidance holes 10 are provided on the insulating support 1 to meet the internal structure of the battery module, so that the applicability of the battery module information collection device is high; at the same time, it can also play a role
  • a plurality of escape holes 10 are arranged at intervals along the first direction.
  • the number, distribution position, shape and size of the avoidance holes 10 can be designed according to actual conditions.
  • the insulating support 1 is a plastic support, which is low in cost, good in insulating effect, light in weight, and improves the energy density of the battery module.
  • the flexible circuit board 2 includes a first section 21, a second section 22 and a transition section 23, the first section 21 and the second section 22 are connected through the transition section 23, and the first section 21 Extended along the first direction and form a first folded portion 24 at the connection with the first end of the transition section 23, the second section 22 is arranged along the first direction and formed at the connection with the second end of the transition section 23
  • the second folding part 25 . That is, the strip-shaped flexible circuit board 2 is U-shaped after being folded twice, and a first folded portion 24 and a second folded portion 25 are formed at the place of the folded twice.
  • the first folded portion 24 includes a stacked first plane and a second plane, the two ends of the first plane are respectively connected to the first segment 21 and the first end of the second plane, and the second end of the second plane is Connect the first end of transition section 23; The second end is connected to the second end of the transition section 23 .
  • the angle between the transition section 23 and the first section 21 is 90°, and the angle between the transition section 23 and the second section 22 is also 90°. That is, the U-shaped flexible circuit board 2 has a regular structure, making the battery module information collection device compact and regular, improving the aesthetics of the appearance and reducing the occupied space.
  • the angle between the transition section 23 and the first section 21 and the angle between the transition section 23 and the second section 22 can be set according to actual conditions, for example, avoidance settings can be made according to the internal structure of the battery module.
  • the insulating bracket 1 is provided with a first heat rivet post 11
  • the flexible circuit board 2 is provided with a waist-shaped hole 27
  • the flexible circuit board 2 is connected with the first heat rivet post 11 through the waist-shaped hole.
  • the first segment 21 and the second segment 22 are provided with a plurality of waist-shaped holes 27, and the waist-shaped holes 27 are connected with a plurality of first heat riveting posts 11 on the insulating support 1 one by one to realize the first
  • the fixing of the first section 21 and the second section 22; the setting of the waist-shaped hole 27 can effectively absorb the expansion force of the battery module during the collection process of the battery module, reduce the force on the body of the flexible circuit board 2, thereby improving the flexibility of the flexible circuit board 2.
  • the hot riveting connection can enhance the connection stability of the first section 21 and the second section 22, facilitate the positioning during connection, improve the accuracy of position connection, and the operation convenience is high, which is conducive to industrial batch production Production.
  • the battery module information collection device further includes a reinforcing plate 3, the reinforcing plate 3 is arranged at one end of the insulating support 1, the transition section 23 is located on the reinforcing plate 3, the first Both the folded portion 24 and the second folded portion 25 are connected to the reinforcing plate 3 .
  • the reinforcing plate 3 is set to fixedly support the first folding part 24 and the second folding part 25 and the transition section 23 between them, so that the connection of the flexible circuit board 2 is stable, and it is convenient for the subsequent battery module information collection device to be assembled on the battery. in the mod.
  • the relative position between the reinforcing plate 3 and the insulation can be set according to the internal space of the battery module, so as to adapt to the internal structure of the battery module and improve the energy density of the battery module.
  • the flexible circuit board 2 is also provided with a low-voltage connector 6, which is located in the transition section 23 and is configured to collect the voltage of the battery module.
  • first folded portion 24 and the second folded portion 25 are respectively connected to the reinforcing plate 3 through rivet buckles, so as to enhance the connection stability of the first folded portion 24 and the second folded portion 25 and provide high operational convenience.
  • the battery module information collection device further includes a plurality of busbars 4 and a plurality of collection pieces 5, and the plurality of busbars 4 are arranged in two rows on the insulating support 1, each row of busbars 4 is arranged along the first direction, the flexible circuit board 2 is located between two rows of busbars 4, and the busbars 4 are set as at least one of series and parallel batteries; each collection piece 5 The two ends are respectively connected to a bus 4 and a flexible circuit board 2 .
  • the battery cells can be connected in series through the busbar 4, or connected in parallel through the busbar 4, and the connection between the flexible circuit board 2 and the busbar 4 can be realized through the collection piece 5, that is, the cell information can be collected through the collection piece 5 and Delivered to the flexible circuit board 2.
  • the first segment 21, the second segment 22, the first row of bus bars 4 and the second row of bus bars 4 are arranged side by side at intervals, and the first segment 21 and the second segment 22 are located between the two rows of bus bars 4, It facilitates the connection of the collection sheet 5 with the first section 21 and the bus sheet 4 on the corresponding side, shortens the size of the collection sheet 5, thereby reducing the risk of fracture and saving materials.
  • the collection sheet 5 and the bus sheet 4 are connected by soldering, which is easy to operate and low in cost; the collection sheet 5 and the flexible circuit board 2 are welded by laser, and laser welding can improve the connection between the collection sheet 5 and the flexible circuit board 2 Accuracy, improve collection accuracy.
  • the collection sheet 5 is a nickel sheet, which has good electrical performance and better corrosion resistance.
  • a second thermal rivet post 12 is further arranged on the insulating support 1 , and each busbar 4 is connected to at least one second thermal rivet post 12 by thermal rivet.
  • the connection stability of the busbar 4 is enhanced. After the busbar 4 is welded, the movable gap of the insulating support 1 can be effectively eliminated, and the force deformation of the plastic upper cover can be reduced.
  • the bus bar 4 is an aluminum bar, which is light in weight and has good electrical performance.
  • the first section 21 and the second section 22 are respectively provided with a plurality of recesses on the side close to the bus bar 4 of the corresponding row.
  • the first side wall of the groove protrudes toward the second side wall, and a connecting section 26 is provided, and the two ends of the collection sheet 5 are respectively connected to the bus sheet 4 and the connecting section 26 .
  • the connecting section 26 is in a Z shape, so as to avoid the internal structure of the battery module and improve the utilization rate of the area.
  • the shape of the connecting section 26 can be set according to actual conditions.
  • the flexible circuit board 2 is further provided with a temperature sensor 9 , and the part of the flexible circuit board 2 provided with the temperature sensor 9 is bent downwards and extends below the insulating support 1 .
  • the temperature detection accuracy and sensitivity are improved.
  • this embodiment also provides a battery module, which includes a plurality of battery cells 100 and the above-mentioned battery module information collection device.
  • the multiple battery cells 100 are arranged side by side along the first direction, and the positive poles and negative poles on the multiple battery cells 100 are distributed in two rows.
  • the insulating support 1 is arranged on the pole end 101 of the battery cell 100, and the distribution of the positive pole and the negative pole of the battery cell 100 protrudes from the insulating support 1 to connect with the bus bar 4, and the reinforcing plate 3 is arranged on the One end plate of the battery module.
  • two batteries form a group
  • the positive poles of one group of batteries are located in the same row
  • the negative poles are located in the same row
  • the positive poles of two adjacent groups of batteries are located in two different rows, that is, the first battery cell
  • the positive poles of the second cell are on the same side
  • the positive poles of the third cell and the fourth cell are on the other side, and so on.
  • the positive poles of the first group of batteries are connected in parallel through a busbar 4, the negative poles of the first group and the positive poles of the second group are connected in series through a busbar 4, the negative poles of the second group and the positive poles of the third group Connect in series through a busbar 4 until the negative poles of the last group of cells are connected in parallel through a busbar 4 .
  • a temperature sensor 9 is respectively provided on the flexible circuit board 2 located at the positive pole and the negative pole of the battery module, and at least one temperature sensor 9 is also provided on the flexible circuit board 2 located between the positive pole and the negative pole of the battery module.
  • the temperature of the positive pole, the negative pole and the middle part of the battery module can be detected in time, the detection accuracy is high, and the temperature can be fed back in time, so as to deal with the abnormal situation in time.
  • the battery module is not only easy to assemble, but also reduces manufacturing costs and waste of raw materials; at the same time, it has high space utilization, light overall weight, strong internal structure stability, and vibration resistance Better, can realize industrialized batch production.

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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)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente demande concerne un appareil d'acquisition d'informations pour un module de batterie, et un module de batterie. L'appareil d'acquisition d'informations pour un module de batterie comprend un support isolant et une carte de circuit imprimé flexible, la carte de circuit imprimé flexible étant pliée en une bande en forme de U ; deux extensions de la bande en forme de U sont disposées dans une première direction et sont montées sur le support isolant ; la carte de circuit imprimé flexible a la forme d'une bande pendant le déploiement, et est conçue pour acquérir des informations sur les cellules. Le module de batterie comprend l'appareil d'acquisition d'informations pour un module de batterie.
PCT/CN2022/108463 2021-12-09 2022-07-28 Appareil d'acquisition d'informations pour module de batterie, et module de batterie WO2023103408A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202123079404.9 2021-12-09
CN202123079404.9U CN217589078U (zh) 2021-12-09 2021-12-09 一种电池模组信息采集装置及电池模组

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WO2023103408A1 true WO2023103408A1 (fr) 2023-06-15

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CN (1) CN217589078U (fr)
WO (1) WO2023103408A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632465A (zh) * 2023-07-19 2023-08-22 中国第一汽车股份有限公司 直连式电池模组及其设计方法、电池包及车辆

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Publication number Priority date Publication date Assignee Title
JP2011210711A (ja) * 2010-03-12 2011-10-20 Autonetworks Technologies Ltd 電池モジュール
JP2013097894A (ja) * 2011-10-28 2013-05-20 Auto Network Gijutsu Kenkyusho:Kk 電池用配線モジュール
CN107004821A (zh) * 2014-12-09 2017-08-01 爱尔铃克铃尔股份公司 用于电化学装置的电池接触系统
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CN209947993U (zh) * 2019-06-28 2020-01-14 东软睿驰汽车技术（沈阳）有限公司 一种电池包的电芯信息采集结构
CN111384347A (zh) * 2018-12-29 2020-07-07 东莞莫仕连接器有限公司 电池连接模块
CN111952490A (zh) * 2019-05-17 2020-11-17 莫仕连接器(成都)有限公司 电池连接模块及电池装置
CN212195160U (zh) * 2020-04-02 2020-12-22 湖北亿纬动力有限公司 电池模组热失控采集装置、电池模组及车辆
CN212874705U (zh) * 2020-08-14 2021-04-02 湖北亿纬动力有限公司 一种电池模组信息采集装置及电池模组

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011210711A (ja) * 2010-03-12 2011-10-20 Autonetworks Technologies Ltd 電池モジュール
JP2013097894A (ja) * 2011-10-28 2013-05-20 Auto Network Gijutsu Kenkyusho:Kk 電池用配線モジュール
CN107004821A (zh) * 2014-12-09 2017-08-01 爱尔铃克铃尔股份公司 用于电化学装置的电池接触系统
CN206878083U (zh) * 2017-06-23 2018-01-12 宁德时代新能源科技股份有限公司 电池模组
CN111384347A (zh) * 2018-12-29 2020-07-07 东莞莫仕连接器有限公司 电池连接模块
CN111952490A (zh) * 2019-05-17 2020-11-17 莫仕连接器(成都)有限公司 电池连接模块及电池装置
CN209947993U (zh) * 2019-06-28 2020-01-14 东软睿驰汽车技术（沈阳）有限公司 一种电池包的电芯信息采集结构
CN212195160U (zh) * 2020-04-02 2020-12-22 湖北亿纬动力有限公司 电池模组热失控采集装置、电池模组及车辆
CN212874705U (zh) * 2020-08-14 2021-04-02 湖北亿纬动力有限公司 一种电池模组信息采集装置及电池模组

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632465A (zh) * 2023-07-19 2023-08-22 中国第一汽车股份有限公司 直连式电池模组及其设计方法、电池包及车辆
CN116632465B (zh) * 2023-07-19 2023-10-27 中国第一汽车股份有限公司 直连式电池模组及其设计方法、电池包及车辆

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