WO2024179224A1 - 电池组件 - Google Patents

电池组件 Download PDF

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Publication number
WO2024179224A1
WO2024179224A1 PCT/CN2024/073448 CN2024073448W WO2024179224A1 WO 2024179224 A1 WO2024179224 A1 WO 2024179224A1 CN 2024073448 W CN2024073448 W CN 2024073448W WO 2024179224 A1 WO2024179224 A1 WO 2024179224A1
Authority
WO
WIPO (PCT)
Prior art keywords
shunt
pin
battery
battery assembly
bms board
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/CN2024/073448
Other languages
English (en)
French (fr)
Inventor
易国高
黄肇淇
吴佳凡
李劳聪
马安
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.)
Zhuhai Cosmx Power Supply Co ltd
Original Assignee
Zhuhai Cosmx Power Supply 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 Zhuhai Cosmx Power Supply Co ltd filed Critical Zhuhai Cosmx Power Supply Co ltd
Publication of WO2024179224A1 publication Critical patent/WO2024179224A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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, and in particular to a battery assembly.
  • Battery Energy Storage System is the most widely used energy storage system.
  • the advantages of battery energy storage system are low cost, mature technology, high charge and discharge multiples, and good modularity, which can be used as a distributed energy storage device.
  • Battery energy storage system is usually equipped with a battery management system (BMS) to manage and maintain battery cells, and shunts need to be integrated in the battery management system.
  • BMS battery management system
  • an embodiment of the present application provides a battery assembly to solve the technical problems that the current shunt setting method in the battery energy storage system leads to low BMS space utilization, complex wiring harness connection and high cost.
  • the present application provides a battery assembly, which includes a housing, a battery module and a BMS board, wherein the housing has a receiving cavity, the battery module is arranged in the receiving cavity, and the BMS board Installed on top of the battery module.
  • the battery module includes a battery cell body, a pole lug bracket and a shunt.
  • the end of the battery cell body is provided with a pole lug, the pole lug bracket is connected to the pole lug, the shunt is connected to the pole lug bracket, and the shunt is connected to the BMS board.
  • the shunt is located between the BMS board and the pole lug bracket.
  • the battery assembly provided in the present application improves the space utilization on the BMS board by separating the shunt from the BMS board and integrating the shunt into the pole ear bracket. On the premise of ensuring reliability and safety, it improves the assembly method of the battery assembly, simplifies the circuit structure, improves production efficiency, and reduces production costs.
  • the shunt may have pins
  • the BMS board has a socket
  • the pins may be plugged into the socket
  • the pins and the socket are connected by soldering.
  • the pin may include a first pin and a second pin
  • the jack may include a first jack and a second jack
  • the first pin and the second pin are plugged into the first jack and the second jack respectively.
  • Such a setting through the double-pin setting mode, reduces the use of wiring harnesses and reduces the wiring harness cost of the battery assembly.
  • the shunt may include a shunt body and a connector, the connector is connected to the shunt body, pins may be set on the shunt body, and the pins extend toward the BMS board, and the connector may be electrically connected to the battery cell body.
  • the shunt can be directly electrically connected to the battery body, playing the role of a copper busbar.
  • a welding portion may be provided at the end of the connecting piece, and the welding portion is welded to the end of the diverter body.
  • the connecting piece may be staggered relative to the diverter body along the width direction of the diverter body.
  • the split-type arrangement structure of the flow splitter can improve the material utilization rate of the flow splitter and reduce the production cost.
  • the gap size is between 0.2 mm and 0.4 mm.
  • the height dimension of the pin protruding from the jack after passing through the jack can be 1.5mm-2mm.
  • Such an arrangement can ensure the reliability of the pin and jack welding and avoid the occurrence of cold soldering, thereby ensuring good signal acquisition accuracy.
  • the tab bracket may have a positioning hole, and the pin may be inserted into the positioning hole.
  • Such an arrangement can ensure the accuracy of the integrated position of the shunt on the pole lug bracket and the accuracy of the assembly position of the shunt and the BMS board.
  • the thickness of the diverter body may be 1.8 mm-2.2 mm; and/or the thickness of the connector may be 1 mm-1.4 mm.
  • Such an arrangement can improve the space utilization of the diverter, increase assembly accuracy, and reduce production costs.
  • the diverter and the tab support may be an integrally formed part.
  • Such an arrangement can reduce the assembly steps of the shunt, ensure that the pin connection has good precision, and improve reliability.
  • the battery assembly provided in the present application includes a shell, a battery module and a BMS board.
  • the shell has a accommodating cavity, the battery module is arranged in the accommodating cavity, the BMS board is arranged on the top of the battery module, the battery module includes a battery cell body, a pole lug bracket and a shunt, the end of the battery cell body is provided with a pole lug, the pole lug bracket is connected to the pole lug, the shunt is connected to the pole lug bracket, and the shunt is connected to the BMS board.
  • the shunt is located between the BMS board and the pole lug bracket, thereby improving the space utilization on the BMS board, improving the production efficiency and reducing the production cost while ensuring reliability and safety.
  • FIG1 is an exploded view of a battery assembly provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of a battery module in a battery assembly provided in an embodiment of the present application
  • FIG3 is an assembly diagram of a tab support and a shunt in a battery assembly provided in an embodiment of the present application
  • FIG4 is an exploded view of a tab support and a shunt in a battery assembly provided in an embodiment of the present application
  • FIG5 is a schematic diagram of the cooperation between the shunt and the BMS board in the battery assembly provided in an embodiment of the present application;
  • FIG6 is a top view of a shunt and a BMS board in a battery assembly provided in an embodiment of the present application
  • FIG7 is a side view of a shunt and a BMS board in a battery assembly provided in an embodiment of the present application;
  • FIG8 is a schematic diagram of the structure of a shunt in a battery assembly provided in an embodiment of the present application.
  • FIG9 is an exploded schematic diagram of a shunt in a battery assembly provided in an embodiment of the present application.
  • FIG10 is a top view of a shunt in a battery assembly provided in an embodiment of the present application.
  • FIG. 11 is a side view of a shunt in a battery assembly provided in an embodiment of the present application.
  • reference numerals 100-housing; 101-accommodating cavity; 110-upper housing; 120-lower housing; 130-second fastener; 200-battery module; 210-battery body; 220-ear bracket; 221-positioning hole; 230-shunt; 231-pin; 231a-first pin; 231b-second pin; 232-shunt body; 233-connector; 2331-welding portion; 300 - BMS board; 301 - socket; 301a - first socket; 301b - second socket; 310 - logic control board; 320 - power board; 330 - first fastener.
  • the peak-to-valley difference of load curve is getting bigger and bigger, which also causes the imbalance of supply and demand in power system. Since the power generation, transmission, transformation, distribution and consumption of power system are carried out continuously, the electric energy is always balanced.
  • the peak power shortage has a serious impact on the normal life of local residents and the development of local economic industries, and restricts the development of social economy.
  • the valley load has a negative impact on the stability of power system. On the one hand, it brings difficulties to control, and on the other hand, it also creates a waste of resources.
  • Battery Energy Storage System is the most widely used energy storage system.
  • the advantages of battery energy storage system are: first, low cost, mature technology, high charge and discharge multiples, and second, good modularity, which can be used as a distributed energy storage device.
  • Battery energy storage system is usually equipped with a battery management system (BMS) to manage and maintain battery cells, and shunts need to be integrated in the battery management system.
  • BMS battery management system
  • the current setting of shunts in battery energy storage systems leads to low BMS space utilization, complex wiring harness connection, and high cost.
  • the present application provides a battery assembly, which reduces the space occupied by the BMS board through the arrangement of the shunt in the battery assembly and the structural design of the shunt, improves the BMS space utilization, simplifies the wiring harness connection method of the shunt, reduces the use of wiring harnesses, and reduces production costs.
  • the battery assembly of the embodiment of the present application is described below with reference to the accompanying drawings. It should be noted that the battery assembly provided in the embodiment of the present application can be charged and discharged and recycled, and the specific types of the battery assembly may include but are not limited to storage batteries, lithium batteries, etc., and the battery assembly and battery pack can be used in scenarios including but not limited to electronic products, energy storage equipment, transportation vehicles, such as new energy vehicles, etc., and the present application This embodiment does not specifically limit this.
  • Figure 1 is an exploded view of a battery assembly provided in an embodiment of the present application
  • Figure 2 is a structural schematic diagram of a battery module in a battery assembly provided in an embodiment of the present application
  • Figure 3 is an assembly diagram of a tab bracket and a shunt in a battery assembly provided in an embodiment of the present application
  • Figure 4 is an exploded view of a tab bracket and a shunt in a battery assembly provided in an embodiment of the present application
  • Figure 5 is a schematic diagram of the coordination between a shunt and a BMS board in a battery assembly provided in an embodiment of the present application.
  • An embodiment of the present application provides a battery assembly, which includes a shell 100, a battery module 200 and a BMS board 300.
  • the shell 100 is used to protect the battery module 200.
  • the battery module 200 is used to store electrical energy, and the battery module 200 can input and output electrical energy.
  • the BMS board 300 is used to manage and maintain the battery module 200, monitor the status of the battery module 200, and extend the service life of the battery assembly.
  • the shell 100 has a accommodating cavity 101
  • the battery module 200 can be arranged in the accommodating cavity 101
  • the BMS board 300 is arranged on the top of the battery module 200.
  • the packaging, encapsulation and assembly of the battery assembly, the BMS board 300 and the battery module 200 can be connected.
  • the battery module 200 includes a battery cell body 210, a tab support 220, and a shunt 230.
  • the end of the battery cell body 210 is provided with a tab, and the tab support 220 is connected to the tab.
  • a bus bar such as an aluminum bus bar, may be provided in the tab support 220 for welding with the tab, so that multiple cells of the battery cell body 210 form a loop.
  • the shunt 230 may be connected to the tab support 220, and the shunt 230 is connected to the BMS board 300. In addition, the shunt 230 may be located between the BMS board 300 and the tab support 220.
  • the shunt 230 acts as a small resistance in the battery assembly. When current passes through, a voltage drop can be formed at both ends of the shunt 230. The current can be calculated by measuring the value of the voltage drop.
  • the shunt 230 can provide power to the BMS board 300 and collect the cell voltage. Since the shunt 230 can be directly connected to the BMS board 300, the use of wiring harnesses is reduced, and the space utilization rate in the BMS board 300 is improved.
  • the battery assembly provided in the embodiment of the present application improves the space utilization on the BMS board 300 by separately setting the shunt 230 and the BMS board 300, and integrates the shunt 230 into the pole ear bracket 220.
  • the assembly method of the battery assembly is improved, the circuit structure is simplified, the production efficiency is improved, and the production cost is reduced.
  • the BMS board 300 in the embodiment of the present application may include a logic control board 310 and a power board 320.
  • the logic control board 310 and the power board 320 may be in a double-layer structure.
  • the BMS board 300 may be disposed above the power board 320 , and plays the role of a battery management system (BMS), that is, the BMS board 300 may be equivalent to a BMS.
  • BMS battery management system
  • Figure 6 is a top view of the shunt and the BMS board in the battery assembly provided in an embodiment of the present application
  • Figure 7 is a side view of the shunt and the BMS board in the battery assembly provided in an embodiment of the present application
  • Figure 8 is a structural schematic diagram of the shunt in the battery assembly provided in an embodiment of the present application.
  • a pin 231 may be provided on the shunt 230, and the BMS board 300 has a socket 301.
  • the pin 231 may be plugged into the socket 301, and the pin 231 and the socket 301 are soldered.
  • the use of wiring harnesses can be reduced and the wiring harness cost of the battery assembly can be reduced.
  • the pin 231 can be vertically arranged on the surface edge of the shunt 230, and the pin 231 extends toward the BMS board 300. During assembly, the pin 231 can be passed through the hole 301, that is, the pin 231 can extend from one side of the hole 301 to the other side of the hole 301.
  • the BMS board 300 may include a logic control board 310 and a power board 320, and the jack 301 may be provided on the power board 320.
  • the power board 320 When the power board 320 is assembled, the power board 320 may be provided on the side of the tab support 220 away from the battery body 210, and the pin 231 is opposite to the jack 301.
  • the shunt 230 is provided as a structural component independently of the BMS board 300, the area of the BMS board 300 can be reduced to form a double-layer board structure of the logic control board 310 and the power board 320, thereby reducing the material cost of the BMS board 300.
  • the shunt 230 and the BMS board 300 are connected by soldering the pins 231 and the sockets 301, the reliability of the electrical connection between the shunt 230 and the BMS board 300 can be ensured.
  • the pin 231 may include a first pin 231a and a second pin 231b
  • the jack 301 may include a first jack 301a and a second jack 301b
  • the first pin 231a and the second pin 231b are respectively plugged into the first jack 301a and the second jack 301b.
  • the first pin 231a can be used for collecting the current of the entire battery pack
  • the second pin 231b can be used to collect the voltage of the battery cell in the battery body 210
  • the second pin 231b can also be used to supply power to the BMS board
  • the second pin 231b can also be used for collecting the current of the entire battery pack, thereby reducing the use of wiring harnesses and reducing the wiring harness cost of the battery assembly.
  • first pin 231a and the second pin 231b may be arranged in parallel, and the first pin Both the first pin 231a and the second pin 231b extend vertically toward the BMS board 300.
  • first pin 231a and the second pin 231b can be synchronously inserted into the first jack 301a and the second jack 301b, respectively.
  • Figure 9 is a schematic diagram of the decomposition of the shunt in the battery assembly provided in an embodiment of the present application
  • Figure 10 is a top view of the shunt in the battery assembly provided in an embodiment of the present application
  • Figure 11 is a side view of the shunt in the battery assembly provided in an embodiment of the present application.
  • the shunt 230 may include a shunt body 232 and a connector 233, the connector 233 is connected to the shunt body 232, the pin 231 may be set on the shunt body 232, and the pin 231 extends toward the BMS board 300, and the connector 233 may be electrically connected to the battery cell body 210.
  • the pin 231 can be set at the edge of the shunt body 232, and the pin 231 can be formed by bending, the shunt body 232 can be opposite to the BMS board 300, and the connector 233 can be electrically connected to the negative electrode ear on the battery cell body 210, so that by setting the connector 233, the shunt 230 can be directly electrically connected to the battery cell body 210, playing the role of a copper bus.
  • the connector 233 can be connected to the shunt body 232 by welding, and the connector 233 can be connected to the negative electrode ear of the battery cell body 210 by welding.
  • the material of the shunt body 232 and the connector 233 can be copper, aluminum or other conductive metals or alloys. The embodiment of the present application does not specifically limit the material of the connector 233 and the shunt body 232.
  • the end of the connecting piece 233 may be provided with a welding portion 2331, and the welding portion 2331 is welded to the end of the diverter body 232.
  • the connecting piece 233 may be staggered relative to the diverter body 232 along the width direction of the diverter body 232.
  • connecting piece 233 and the diverter body 232 need to be staggered in the width direction, if the connecting piece 233 and the diverter body 232 are integrally formed as shown in FIG10 , during the processing, it will cause waste of material in the area within the dotted box in FIG10 .
  • the connecting piece 233 and the diverter body 232 by forming the connecting piece 233 and the diverter body 232 separately and welding the two together, waste in the processing process can be reduced and production costs can be reduced.
  • the specific values of the gap size between the pin 231 and the socket 301 may include but are not limited to 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, etc., and the embodiments of the present application do not specifically limit this.
  • the BMS board 300 can be disposed above the pole lug bracket 220 , and the shunt 230 can be integrated with the pole lug bracket 220 , and the pin 231 can extend from the bottom side of the power board 320 of the BMS board 300 through the socket 301 to the upper side of the power board 320 .
  • the height dimension of the pin 231 protruding from the jack 301 can be 1.5mm-2mm, thereby ensuring the reliability of welding between the pin 231 and the jack 301, avoiding the occurrence of cold solder joints, and ensuring good signal collection accuracy.
  • the height dimension of the pin 231 protruding from the jack 301 can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, etc., which is not specifically limited in the embodiments of the present application.
  • first pin 231a and the first socket 301a can adopt similar sizes and matching methods as the above-mentioned pin 231 and the socket 301, which will not be elaborated here.
  • the tab bracket 220 may have a positioning hole 221 , and the pin 231 may be inserted into the positioning hole 221 , which can ensure the accuracy of the integrated position of the shunt 230 on the tab bracket 220 and the accuracy of the assembly position of the shunt 230 and the BMS board 300 .
  • the shunt 230 is integrated with the pole ear bracket 220, during the assembly process, the relative position of the shunt 230 can be determined by completing the installation of the pole ear bracket 220 and the battery cell body 210, so that the position of the pin 231 can be determined, and then the accuracy of the docking between the pin 231 and the jack 301 can be guaranteed by assembling the BMS board 300.
  • the BMS board 300 can be connected to the pole ear bracket 220 through a first fastener 330.
  • the first fastener 330 can be a threaded fastener such as a screw or a bolt.
  • the diverter body 232 and the connecting member 233 may both be plate-shaped structures, and
  • the board surface of the shunt body 232 and the board surface of the connecting member 233 can be parallel to each other, and the pin 231 can extend upward perpendicular to the board surface of the shunt body 232, thereby improving the space utilization of the shunt 230, improving the assembly accuracy, and reducing the production cost.
  • the thickness of the diverter body 232 can be 1.8mm-2.2mm.
  • the specific thickness of the diverter body 232 can include but is not limited to 1.8mm, 1.85mm, 1.9mm, 2.0mm, 2.1mm, 2.15mm, 2.2mm, etc., and the embodiment of the present application does not specifically limit this.
  • the thickness of the connector 233 can be 1mm-1.4mm.
  • the specific thickness of the connector 233 can include but is not limited to 1mm, 1.05mm, 1.1mm, 1.2mm, 1.3mm, 1.35mm, 1.4mm, etc., and the embodiment of the present application does not specifically limit this.
  • the shunt 230 and the tab support 220 may be an integrally formed part, thereby reducing the assembly steps of the shunt 230 , ensuring that the connection of the pin 231 has good precision, and improving reliability.
  • the shunt 230 can be integrally formed with the tab support 220 by injection molding, that is, the shunt 230 is first processed and molded, and when the tab support 220 is injection molded, the shunt 230 is simultaneously injection molded and wrapped around the tab support 220 .
  • the shell 100 may include a lower shell 120 and an upper shell 110, the lower shell 120 is used to form a accommodating cavity 101, the BMS board 300 may be arranged at one end of the battery module 200 facing the upper shell 110, the upper shell 110 is covered on top of the BMS board 300, and the upper shell 110 may be connected to the lower shell 120, thereby improving the space utilization of the shell 100 and improving the efficiency of the assembly process of the battery component.
  • the second fastener 130 can be a threaded fastener such as a screw or a bolt, and the edge where the upper shell 110 and the lower shell 120 are connected can be coated with sealant to ensure good sealing when the upper shell 110 and the lower shell 120 are packaged.
  • the second fastener 130 can be connected to the corner position where the upper shell 110 and the lower shell 120 are connected.
  • the stacking of the battery cell body 210 can be completed first, and the assembly of the pole ear bracket 220 can be completed on the battery cell body 210. Since the shunt 230 is integrated with the pole ear bracket 220, the assembly of the shunt 230 is also completed at this time. Thereafter, the negative pole ear is bent and welded, and the battery module 200 is loaded into the accommodating cavity 101 of the shell 100. Then, the BMS board 300 is assembled, the BMS board 300 is welded to the positive pole ear, and the pin 231 is matched with the jack 301 and soldered, and finally the packaging and sealing of the shell 100 are completed.
  • the battery assembly provided in the present application includes a shell, a battery module and a BMS board.
  • the shell has a accommodating cavity, the battery module is arranged in the accommodating cavity, the BMS board is arranged on the top of the battery module, the battery module includes a battery cell body, a pole lug bracket and a shunt, the end of the battery cell body is provided with a pole lug, the pole lug bracket is connected to the pole lug, the shunt is connected to the pole lug bracket, and the shunt is connected to the BMS board.
  • the shunt is located between the BMS board and the pole lug bracket, thereby improving the space utilization on the BMS board, improving the production efficiency and reducing the production cost while ensuring reliability and safety.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请提供一种电池组件，包括壳体、电池模组和BMS板，壳体具有容置腔，电池模组设置于容置腔中，BMS板设置于电池模组的顶部，电池模组包括电芯主体、极耳支架和分流器，电芯主体的端部设有极耳，极耳支架与极耳连接，分流器与极耳支架连接，且分流器与BMS板连接，分流器位于BMS板和极耳支架之间，从而提高了BMS板上的空间利用率，在保证可靠性和安全性的前提下，提高了生产效率，降低了生产成本。

Description

电池组件
本申请要求于2023年2月28日提交中国专利局、申请号为202320363358.5、申请名称为“电池组件”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，尤其涉及一种电池组件。
背景技术
随着经济的发展和社会的进步，以及人民生活水平的不断提高，负荷曲线呈现的峰谷差越来越大，这也造成了电力系统供需不平衡现象。此外，随着全球能源供应的紧张和全球气候的变化以及环境的污染，越来越多的国家认识到新能源的重要性，都在大力发展新能源。
相关技术中，化学储能主要指蓄电池储能，蓄电池储能系统(Battery Energy Storage System，BESS)是用的范围最广的储能系统，蓄电池储能系统的优势在于一是成本较低，技术成熟，充放电倍数高，二是模块性好，可作为分布式能量储存装置。蓄电池储能系统中通常设置有电池管理系统(Battery Management System，BMS)用于管理和维护电池单元，并且在电池管理系统中需要集成分流器。
然而，目前的蓄电池储能系统中分流器的设置方式导致BMS空间利用率低，线束连接复杂，成本较高。
实用新型内容
鉴于上述问题，本申请实施例提供一种电池组件，以解决目前蓄电池储能系统中分流器的设置方式导致BMS空间利用率低，线束连接复杂，成本较高的技术问题。
为了实现上述目的，本申请提供一种电池组件，该电池组件包括壳体、电池模组和BMS板，壳体具有容置腔，电池模组设置于容置腔中，BMS板 设置于电池模组的顶部。
其中，电池模组包括电芯主体、极耳支架和分流器，电芯主体的端部设有极耳，极耳支架与极耳连接，分流器与极耳支架连接，且分流器与BMS板连接，分流器位于BMS板和极耳支架之间。
本申请提供的电池组件通过将分流器与BMS板分开设置，将分流器集成至极耳支架上，提高了BMS板上的空间利用率，在保证可靠性和安全性的前提下，改良了电池组件的装配方式，简化了电路结构，提高了生产效率，降低了生产成本。
作为一种可选的实施方式，分流器上可以具有引脚，BMS板具有插孔，引脚可以与插孔插接，且引脚与插孔锡焊连接。
如此设置，通过引脚和插孔的插接锡焊，可以减少线束使用，降低电池组件的线束成本。
作为一种可选的实施方式，引脚可以包括第一引脚和第二引脚，插孔可以包括第一插孔和第二插孔，第一引脚和第二引脚分别与第一插孔和第二插孔插接。
如此设置，通过双引脚的设置方式，减少线束使用，降低电池组件的线束成本。
作为一种可选的实施方式，分流器可以包括分流器主体和连接件，连接件与分流器主体连接，引脚可以设置于分流器主体，且引脚朝向BMS板延伸，连接件可以与电芯主体电连接。
如此设置，通过设置连接件，可以使得分流器直接与电芯主体电连接，起到铜排的作用。
作为一种可选的实施方式，连接件的端部可以设有焊接部，焊接部与分流器主体的端部焊接，连接件相对于分流器主体可以沿分流器主体的宽度方向错位设置。
如此设置，通过分流器的分体式设置结构，提高分流器的材料利用率，降低生产成本。
作为一种可选的实施方式，引脚与插孔的内缘具有间隙，间隙尺寸在0.2mm-0.4mm之间。
如此设置，在引脚和插孔进行锡焊时，可以避免锡焊过程中的锡渣掉落。
作为一种可选的实施方式，引脚从插孔穿过后凸出的高度尺寸可以为 1.5mm-2mm。
如此设置，可以保证引脚和插孔焊接的可靠性，避免产生虚焊，从而保证信号良好的采集精度。
作为一种可选的实施方式，极耳支架上可以有定位孔，引脚可以穿设于定位孔。
如此设置，可以保证分流器在极耳支架上集成位置的准确性，保证分流器与BMS板装配位置的精确性。
作为一种可选的实施方式，分流器主体的厚度尺寸可以为1.8mm-2.2mm；和/或，连接件的厚度尺寸可以为1mm-1.4mm。
如此设置，可以提高分流器的空间利用率，提高装配精度，降低生产成本。
作为一种可选的实施方式，分流器与所述极耳支架可以为一体成型件。
如此设置，可以减少分流器的装配步骤，保证引脚连接具有良好的精度，提高了可靠性。
本申请提供的电池组件包括壳体、电池模组和BMS板，壳体具有容置腔，电池模组设置于容置腔中，BMS板设置于电池模组的顶部，电池模组包括电芯主体、极耳支架和分流器，电芯主体的端部设有极耳，极耳支架与极耳连接，分流器与极耳支架连接，且分流器与BMS板连接，分流器位于BMS板和极耳支架之间，从而提高了BMS板上的空间利用率，在保证可靠性和安全性的前提下，提高了生产效率，降低了生产成本。
除了上面所描述的本申请解决的技术问题、构成技术方案的技术特征以及由这些技术方案的技术特征所带来的有益效果外，本申请提供的电池组件所能解决的其他技术问题、技术方案中包含的其他技术特征以及这些技术特征带来的有益效果，将在具体实施方式中作出进一步详细的说明。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的电池组件的爆炸图；
图2为本申请实施例提供的电池组件中电池模组的结构示意图；
图3为本申请实施例提供的电池组件中极耳支架与分流器的装配图；
图4为本申请实施例提供的电池组件中极耳支架与分流器的爆炸图；
图5为本申请实施例提供的电池组件中分流器与BMS板的配合示意图；
图6为本申请实施例提供的电池组件中分流器与BMS板的俯视图；
图7为本申请实施例提供的电池组件中分流器与BMS板的侧视图；
图8为本申请实施例提供的电池组件中分流器的结构示意图；
图9为本申请实施例提供的电池组件中分流器的分解示意图；
图10为本申请实施例提供的电池组件中分流器的俯视图；
图11为本申请实施例提供的电池组件中分流器的侧视图。
附图标记说明：
100-壳体；101-容置腔；110-上壳体；120-下壳体；130-第二紧固件；
200-电池模组；210-电芯主体；220-极耳支架；221-定位孔；230-分流器；
231-引脚；231a-第一引脚；231b-第二引脚；232-分流器主体；233-连接件；2331-焊接部；
300-BMS板；301-插孔；301a-第一插孔；301b-第二插孔；310-逻辑控制
板；320-电源板；330-第一紧固件。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
随着经济的发展和社会的进步，以及人民生活水平的不断提高，负荷曲线呈现的峰谷差越来越大，这也造成了电力系统供需不平衡现象。由于电力系统的发电、输电、变电、配电和用电是连续进行的，电能时刻都保持着平衡。高峰电力短缺给当地居民的正常生活和当地经济产业的发展造成了严重的影响，制约了社会经济的发展。相反，低谷负荷一方面给电力系统稳定性 控制带来了困难，另一方面也造就了资源的浪费，系统中有大批的电力设备等闲置，没有对这些设备的容量进行充分的利用，导致了系统运行的经济性下降。当然，系统中的也建有一些大型的调峰电厂和抽水蓄能电站，但此类调峰成本都比较高，设备利用率低，资源浪费，同样也造成了发电成本的进一步提高。
此外，随着全球能源供应的紧张和全球气候的变化以及环境的污染，越来越多的国家认识到新能源的重要性，都在大力发展新能源发电，尤其是风力发电、光伏发电等。由于太阳能发电和风力发电等清洁能源发电由于其在开发利用中对环境污染小和取之不竭的优势，受到了极大的关注。但是，可再生能源发电的功率输出具有波动性和随机性的特点，风能和太阳能受天气条件和地理环境影响比较大，因此风电大规模并网也带来不少缺陷。大规模的分布式发电并网，其输出功率的波动性严重威胁到了电力系统的稳定性和安全性，随着风电比重的增大，给电力调度部门加重工作，增加调频调峰压力，同时由于功率和频率的波动性，导致电网电压质量下降。另外，风力发电的地区都相当集中，风能资源主要分布在沿海和高原地区，由此也造成了因长距离输电带来的运行成本的增加。
化学储能主要指蓄电池储能，蓄电池储能系统(Battery Energy Storage System，BESS)是用的范围最广的储能系统，蓄电池储能系统的优势在于一是成本较低，技术成熟，充放电倍数高，二是模块性好，可作为分布式能量储存装置。蓄电池储能系统中通常设置有电池管理系统(Battery Management System，BMS)用于管理和维护电池单元，并且在电池管理系统中需要集成分流器。然而，目前的蓄电池储能系统中分流器的设置方式导致BMS空间利用率低，线束连接复杂，成本较高。
本申请提供一种电池组件，通过对分流器在电池组件中的布置方式以及对分流器的结构设计，减小对BMS的板上空间的占用，提高了BMS空间利用率，简化了分流器的线束连接方式，减少了线束使用，降低了生产制造成本。
下面结合附图说明本申请实施例的电池组件。需要说明的是，本申请实施例提供的电池组件可以进行充放电并循环使用，电池组件的具体类型可以包括但不限于蓄电池、锂电池等，而电池组件和电池组可以使用的场景，包括但不限于电子产品、储能设备、交通工具等，例如新能源汽车等，本申请 实施例对此不做具体限定。
图1为本申请实施例提供的电池组件的爆炸图，图2为本申请实施例提供的电池组件中电池模组的结构示意图，图3为本申请实施例提供的电池组件中极耳支架与分流器的装配图，图4为本申请实施例提供的电池组件中极耳支架与分流器的爆炸图，图5为本申请实施例提供的电池组件中分流器与BMS板的配合示意图。
请参照图1至图5，本申请实施例一种电池组件，该电池组件包括壳体100、电池模组200和BMS板300，壳体100用于保护电池模组200，电池模组200用于储存电能，且电池模组200可以输入和输出电能，BMS板300用于管理和维护电池模组200，监控电池模组200状态，延长电池组件的使用寿命。
其中，壳体100具有容置腔101，电池模组200可以设置于容置腔101中，BMS板300设置于电池模组200的顶部，在对电池组件进行包装、封装和装配过程中，可以将BMS板300和电池模组200进行连接。
在一些实施例中，电池模组200包括电芯主体210、极耳支架220和分流器230，电芯主体210的端部设有极耳，极耳支架220与极耳连接，极耳支架220中可以设有汇流排，例如铝排等，用于和极耳焊接，以使电芯主体210的多个电芯形成回路，分流器230可以与极耳支架220连接，且分流器230与BMS板300连接。此外，分流器230可以位于BMS板300和极耳支架220之间。
可以理解的是，分流器230在电池组件中起到小阻值电阻的作用，当电流通过时，在分流器230的两端可以形成一个压降，通过测量该压降的数值可以计算出电流的大小。此外，分流器230可以起到为BMS板300供电，以及采集电芯电压的作用，并且由于分流器230可以直接与BMS板300进行连接，从而减少线束的使用，提高了BMS板300中的空间利用率。
需要说明的是，本申请实施例提供的电池组件通过将分流器230与BMS板300分开设置，将分流器230集成至极耳支架220上，提高了BMS板300上的空间利用率，在保证可靠性和安全性的前提下，改良了电池组件的装配方式，简化了电路结构，提高了生产效率，降低了生产成本。
此外，本申请实施例中的BMS板300可以包括逻辑控制板310和电源板320，逻辑控制板310和电源板320可以呈双层结构，其中，逻辑控制板310 可以设置在电源板320的上方，BMS板300起到电池管理系统(Battery Management System，BMS)的作用，即BMS板300可以等效为BMS。
下面首先对分流器230与BMS板300的具体连接方式进行详细说明。
图6为本申请实施例提供的电池组件中分流器与BMS板的俯视图，图7为本申请实施例提供的电池组件中分流器与BMS板的侧视图，图8为本申请实施例提供的电池组件中分流器的结构示意图。
请参照图1至图8，在一种可能的实现方式中，分流器230上可以设置有引脚231，BMS板300具有插孔301，引脚231可以与插孔301插接，且引脚231与插孔301锡焊连接，通过引脚231和插孔301的插接锡焊，可以减少线束使用，降低电池组件的线束成本。
可以理解的是，引脚231可以在分流器230的表面边缘竖直设置，且引脚231朝向BMS板300延伸，在装配时，可以将引脚231穿过插孔301，即引脚231可以从插孔301的一侧伸至插孔301的另一侧。
在一些实施例中，BMS板300可以包括逻辑控制板310和电源板320，插孔301可以开设在电源板320上，在装配电源板320时，电源板320可以设置在极耳支架220背离电芯主体210的一侧，且引脚231与插孔301相对。通过将分流器230和BMS板300分开设置，可以避免分流器230占用电源板320的板上空间，增大了BMS板300的空间利用率。
需要说明的是，由于分流器230作为结构件独立于BMS板300设置，BMS板300的面积可以减小，以形成逻辑控制板310和电源板320的双层板结构，从而可以降低BMS板300的材料成本，此外，由于分流器230与BMS板300通过引脚231和插孔301锡焊的方式进行连接，可以保证分流器230和BMS板300之间电连接的可靠性。
在一种可能的实现方式中，引脚231可以包括第一引脚231a和第二引脚231b，插孔301可以包括第一插孔301a和第二插孔301b，第一引脚231a和第二引脚231b分别与第一插孔301a和第二插孔301b插接。
可以理解的是，第一引脚231a可以用于电池的整包电流采集，第二引脚231b可以用于采集电芯主体210中电芯单体的电压，第二引脚231b也可以用于向BMS板供电，第二引脚231b还可以用于电池整包电流采集，从而减少线束使用，降低电池组件的线束成本。
示例性的，第一引脚231a和第二引脚231b可以平行设置，且第一引脚 231a和第二引脚231b均向BMS板300竖直延伸，在装配BMS板300时，第一引脚231a和第二引脚231b可以分别同步插入第一插孔301a和第二插孔301b内。
下面对分流器230的具体结构进行说明。
图9为本申请实施例提供的电池组件中分流器的分解示意图，图10为本申请实施例提供的电池组件中分流器的俯视图，图11为本申请实施例提供的电池组件中分流器的侧视图。
请参照图1至图11，在一种可能的实现方式中，分流器230可以包括分流器主体232和连接件233，连接件233与分流器主体232连接，引脚231可以设置于分流器主体232，且引脚231朝向BMS板300延伸，连接件233可以与电芯主体210电连接。
可以理解的是，引脚231可以设置在分流器主体232的边缘，且引脚231可以通过折弯的方式成型，分流器主体232可以与BMS板300相对，而连接件233可以与电芯主体210上的负极耳进行电连接，从而通过设置连接件233，可以使得分流器230直接与电芯主体210电连接，起到铜排的作用。
需要说明的是，连接件233可以通过焊接的方式与分流器主体232进行连接，且连接件233可以通过焊接的方式与电芯主体210的负极耳进行连接，分流器主体232和连接件233的材质可以铜、铝或其他导电金属或合金，本申请实施例对连接件233以及分流器主体232的材质不做具体限定。
示例性的，连接件233的端部可以设有焊接部2331，焊接部2331与分流器主体232的端部焊接，连接件233相对于分流器主体232可以沿分流器主体232的宽度方向错位设置，通过分流器230的分体式设置结构，提高分流器230的材料利用率，降低生产成本。
本领域技术人员可以理解的是，由于连接件233和分流器主体232在宽度方向上需要错位设置，因此，如果连接件233与分流器主体232一体成型，如图10所示，在加工过程中，将会造成图10中虚线框中区域的材料的浪费，本申请实施例中，通过将连接件233和分流器主体232单独成型，并将两者进行焊接连接，可以减少加工过程中的废料，降低生产成本。
在一些实施例中，引脚231与插孔301的内缘之间可以有间隙，即在引脚231与插孔301插接时采用间隙配合的方式，引脚231和插孔301之间的间隙尺寸在0.2mm-0.4mm之间。
可以理解的是，在引脚231和插孔301插接并进行锡焊时，由于引脚231与插孔301的内缘之间具有一定的间隙，可以保证引脚231与插孔301插接的便利性，避免因尺寸误差造成引脚231无法插入插孔301。此外，将引脚231与插孔301之间的间隙维持在较小的范围内，在引脚231和插孔301进行锡焊时，可以避免锡焊过程中的锡渣掉落，保证电池组件的工作可靠性。
示例性的，引脚231和插孔301之间的间隙尺寸可采用的具体数值可以包括但不限于0.2mm、0.25mm、0.3mm、0.35mm、0.4mm等，本申请实施例对此不做具体限定。
在一种可能的实现方式中，BMS板300可以设置在极耳支架220的上方，而分流器230可以与极耳支架220集成在一起，引脚231可以从BMS板300的电源板320的底侧穿过插孔301伸至电源板320的上侧。
可以理解的是，引脚231从插孔301穿过后凸出的高度尺寸可以为1.5mm-2mm，从而可以保证引脚231和插孔301焊接的可靠性，避免产生虚焊，从而保证信号良好的采集精度。
示例性的，引脚231从插孔301穿过后凸出的高度尺寸具体可以为1.5mm、1.6mm、1.7mm、1.8mm、1.9mm、2.0mm等，本申请实施例对此不做具体限定。
需要说明的是，第一引脚231a与第一插孔301a，以及第二引脚231b和第二插孔301b可以采用上述引脚231与插孔301类似的尺寸和配合方式，此处不再展开赘述。
在一些实施例中，极耳支架220上可以有定位孔221，引脚231可以穿设于定位孔221，可以保证分流器230在极耳支架220上集成位置的准确性，保证分流器230与BMS板300装配位置的精确性。
可以理解的是，由于分流器230与极耳支架220集成设置，在装配过程中，完成极耳支架220与电芯主体210的安装便可以确定分流器230的相对位置，从而引脚231的位置便可以确定，从而再装配BMS板300便可以保证引脚231与插孔301对接的准确性。
需要说明的是，BMS板300可以通过第一紧固件330与极耳支架220进行连接，第一紧固件330可以为螺钉或螺栓等螺纹紧固件，第一紧固件330可以为多个，多个第一紧固件330可以连接在第一电源板320的边角位置。
在一些实施例中，分流器主体232和连接件233均可以呈板状结构，且 分流器主体232的板面和连接件233的板面可以相互平行，而引脚231可以垂直于分流器主体232的板面向上延伸，从而可以提高分流器230的空间利用率，提高装配精度，降低生产成本。
示例性的，分流器主体232的厚度尺寸可以为1.8mm-2.2mm，本申请实施例中，分流器主体232可采用的具体厚度尺寸可以包括但不限于1.8mm、1.85mm、1.9mm、2.0mm、2.1mm、2.15mm、2.2mm等，本申请实施例对此不做具体限定。连接件233的厚度尺寸可以为1mm-1.4mm，本申请实施例中，连接件233可采用的具体厚度尺寸可以包括但不限于1mm、1.05mm、1.1mm、1.2mm、1.3mm、1.35mm、1.4mm等，本申请实施例对此亦不做具体限定。
在一些实施例中，分流器230与极耳支架220可以为一体成型件，从而可以减少分流器230的装配步骤，保证引脚231连接具有良好的精度，提高了可靠性。
示例性的，分流器230可以与极耳支架220采用注塑的方式一体成型，即先完成分流器230的加工成型，在极耳支架220注塑成型时，将分流器230同时注塑包裹在极耳支架220上。
在一种可能的实现方式中，壳体100可以包括下壳体120和上壳体110，下壳体120用于形成容置腔101，BMS板300可以设置于电池模组200面向上壳体110的一端，上壳体110盖设于BMS板300的上方，且上壳体110可以与下壳体120连接，从而可以挺高壳体100的空间利用率，提高电池组件的装配工艺的效率。
可以理解的是，上壳体110与下壳体120在进行装配时，可以通过第二紧固件130进行固定，第二紧固件130可以为螺钉或螺栓等螺纹紧固件，并且在上壳体110和下壳体120对接的边缘可以涂覆有密封胶，从而保证上壳体110与下壳体120封装时具有良好的密封性，第二紧固件130可以连接在上壳体110与下壳体120对接的边角位置。
需要说明的是，在本申请实施例提供的电池组件装配时，可以先完成电芯主体210的堆叠，并在电芯主体210上完成极耳支架220的装配，由于分流器230与极耳支架220集成，此时也完成了分流器230的装配，其后进行负极耳的折弯和焊接，并将电池模组200装入壳体100的容置腔101中，然后，进行BMS板300的装配，将BMS板300与正极耳进行焊接，且将引脚231与插孔301进行配合并进行锡焊，最后完成壳体100的封装和密封紧固。
本申请提供的电池组件包括壳体、电池模组和BMS板，壳体具有容置腔，电池模组设置于容置腔中，BMS板设置于电池模组的顶部，电池模组包括电芯主体、极耳支架和分流器，电芯主体的端部设有极耳，极耳支架与极耳连接，分流器与极耳支架连接，且分流器与BMS板连接，分流器位于BMS板和极耳支架之间，从而提高了BMS板上的空间利用率，在保证可靠性和安全性的前提下，提高了生产效率，降低了生产成本。
在本申请的描述中，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”应作广义理解，例如，可以使固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或者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申请和简化描述，而不是指示或者暗示所指的装置或者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申请的限制。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。
此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (10)

  1. 一种电池组件，其特征在于，包括壳体、电池模组和BMS板，所述壳体具有容置腔，所述电池模组设置于所述容置腔中；
    所述电池模组包括电芯主体、极耳支架和分流器，所述电芯主体的端部设有极耳，所述极耳支架与所述极耳连接，所述分流器与所述极耳支架连接，且所述分流器与所述BMS板连接；所述分流器位于所述BMS板和所述极耳支架之间。
  2. 根据权利要求1所述的电池组件，其特征在于，所述分流器具有引脚，所述BMS板具有插孔，所述引脚与所述插孔插接，且所述引脚与所述插孔锡焊连接。
  3. 根据权利要求2所述的电池组件，其特征在于，所述引脚包括第一引脚和第二引脚，所述插孔包括第一插孔和第二插孔，所述第一引脚和所述第二引脚分别与所述第一插孔和所述第二插孔插接。
  4. 根据权利要求2所述的电池组件，其特征在于，所述分流器包括分流器主体和连接件，所述连接件与所述分流器主体连接；所述引脚设置于所述分流器主体，且所述引脚朝向所述BMS板延伸，所述连接件与所述电芯主体电连接。
  5. 根据权利要求4所述的电池组件，其特征在于，所述连接件的端部具有焊接部，所述焊接部与所述分流器主体的端部焊接，所述连接件相对于所述分流器主体沿所述分流器主体的宽度方向错位设置。
  6. 根据权利要求2-5任一项所述的电池组件，其特征在于，所述引脚与所述插孔的内缘具有间隙，所述间隙尺寸在0.2mm-0.4mm之间。
  7. 根据权利要求2-5任一项所述的电池组件，其特征在于，所述引脚从所述插孔穿过后凸出的高度尺寸为1.5mm-2mm。
  8. 根据权利要求2-5任一项所述的电池组件，其特征在于，所述极耳支架具有定位孔，所述引脚穿设于所述定位孔。
  9. 根据权利要求4或5所述的电池组件，其特征在于，所述分流器主体的厚度尺寸为1.8mm-2.2mm；和/或，所述连接件的厚度尺寸为1mm-1.4mm。
  10. 根据权利要求1-5任一项所述的电池组件，其特征在于，所述分流器与所述极耳支架为一体成型件。
PCT/CN2024/073448 2023-02-28 2024-01-22 电池组件 Ceased WO2024179224A1 (zh)

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