WO2024098478A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2024098478A1
WO2024098478A1 PCT/CN2022/135749 CN2022135749W WO2024098478A1 WO 2024098478 A1 WO2024098478 A1 WO 2024098478A1 CN 2022135749 W CN2022135749 W CN 2022135749W WO 2024098478 A1 WO2024098478 A1 WO 2024098478A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery module
mounting surface
battery
mounting bracket
fpc 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/CN2022/135749
Other languages
English (en)
French (fr)
Inventor
任朝举
陆君高
张国江
徐宇虹
江吉兵
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.)
EVE Power Co Ltd
Original Assignee
EVE Power 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 EVE Power Co Ltd filed Critical EVE Power Co Ltd
Priority to EP22932493.4A priority Critical patent/EP4391203A4/en
Priority to US18/284,370 priority patent/US20240322327A1/en
Publication of WO2024098478A1 publication Critical patent/WO2024098478A1/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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/258—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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • 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]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of flexible or folded printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H05K1/0281—Reinforcement details thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10037—Printed or non-printed battery
    • 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.
  • a power battery consists of hundreds or thousands of cells.
  • a group of cells forms a battery module, and multiple battery modules can form a power battery.
  • the battery module is generally provided with a mounting bracket.
  • the assembly of the battery module includes fixing the cells, flexible printed circuit (FPC) boards, wiring harnesses, connectors, buses and other structural parts on the mounting bracket. If these structural parts are separately supplied, for the assembly station of the battery module, it will lead to an increase in the types of materials, increase the difficulty of material control, and affect the assembly efficiency and product quality.
  • FPC flexible printed circuit
  • the battery module in the related art generally uses a snap-on connection method for the installation of the connector.
  • the connector is fixed to the mounting bracket by the snap-on structure, and the snap-on structure is easy to loosen.
  • the vibration during the use of the battery module will cause the connector to shake, which will lead to poor collection contact and affect the reliability of the battery module.
  • the present application provides a battery module that can realize integrated incoming materials at a battery cell assembly station, and the connector and the mounting bracket are reliably riveted, thereby improving assembly efficiency and assembly quality and ensuring working reliability.
  • the present application provides a battery module, comprising:
  • the mounting bracket comprises a first mounting surface and a second mounting surface which are arranged opposite to each other, wherein a plurality of fixing plates are arranged on the first mounting surface;
  • a busbar assembly detachably connected to the mounting bracket and disposed on the second mounting surface
  • a plurality of battery cells are arranged on the first mounting surface and connected to the busbar assembly;
  • the FPC board assembly comprises a plurality of FPC boards and a plurality of connectors.
  • the FPC boards are vertically arranged on a first mounting surface.
  • the connecting ends of the FPC boards are fixedly connected to the connectors and riveted to the fixing boards.
  • the FPC board assembly further includes a reinforcing plate, the reinforcing plate is connected to a side of the connecting end facing away from the connector, and the reinforcing plate is riveted to the fixing plate.
  • a plurality of rivet posts are provided on the fixing plate, and a plurality of positioning holes are provided on the reinforcing plate and the connecting end.
  • the rivet posts can pass through the positioning holes and rivet the reinforcing plate and the connecting end.
  • the mounting bracket further includes a plurality of reinforcing ribs, and the reinforcing ribs are connected to a side of the fixing plate away from the connecting end.
  • the busbar assembly includes a negative output busbar, the negative output busbar includes a bent output end, the bent output end is parallel to the axial direction of the battery cell, and the bent output end is configured to connect adjacent battery modules.
  • the bent output end is affixed to the mounting bracket, and a connecting bolt is provided on the bent output end.
  • the axial direction of the connecting bolt is perpendicular to the side of the mounting bracket, and the connecting bolt is configured to connect the adjacent battery modules.
  • the connecting bolt is screwed into the mounting hole of the bent output end.
  • the plurality of FPC boards include a first FPC board and a second FPC board, the first FPC board is embedded between the plurality of battery cells, and the second FPC board is disposed around the periphery of the battery cells.
  • the first FPC board includes a bent extension portion, and the bent extension portion can be attached to the side surfaces of the plurality of battery cells.
  • the mounting bracket includes a plurality of first limiting members, the first limiting members are protrudingly disposed on the first mounting surface, and the first limiting members are configured to clamp the battery core.
  • the mounting bracket includes a plurality of second position-limiting members, the second position-limiting members are protrudingly disposed on the second mounting surface, and the second position-limiting members are configured to clamp the busbar assembly.
  • the FPC board is uprightly arranged on the first mounting surface. Therefore, the FPC board will not affect the assembly of the battery cells, and the bus assembly, the mounting bracket and the FPC board assembly can be pre-assembled in advance.
  • the bus assembly, the mounting bracket and the FPC board assembly are assembled in the previous process to achieve integrated incoming materials, reduce the types of materials, reduce the difficulty of material management, and also reduce the occupation of equipment and site, thereby improving assembly efficiency and product quality; at the same time, the connecting end of the FPC board is fixedly connected to the connector, and the connecting end is riveted to the fixing plate to achieve the installation of the connector.
  • the manufacturing process is simple and the processing cost is low.
  • the fixation is reliable and there is no looseness. Even if the battery module vibrates during use, it is difficult to cause the connector to shake, thereby avoiding poor contact and ensuring the working reliability of the battery module.
  • FIG1 is a structural schematic diagram of a battery module provided in an embodiment of the present application.
  • FIG2 is a second structural schematic diagram of a battery module provided in an embodiment of the present application.
  • FIG3 is a partial enlarged schematic diagram of part A in FIG1 ;
  • FIG4 is a partial enlarged schematic diagram of portion B in FIG2 ;
  • FIG5 is a schematic diagram of the structure of a negative output bus provided in an embodiment of the present application.
  • FIG6 is a first structural diagram of a mounting bracket provided in an embodiment of the present application.
  • FIG7 is a partial enlarged schematic diagram of portion C in FIG6 ;
  • FIG8 is a second structural schematic diagram of the mounting bracket provided in an embodiment of the present application.
  • FIG. 9 is a partial enlarged schematic diagram of portion D in FIG. 8 .
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them.
  • a first feature being “above”, “above” and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
  • the terms “upper”, “lower”, “left”, “right” and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction.
  • the terms “first” and “second” are only used to distinguish in the description and have no special meaning.
  • a power battery consists of hundreds or thousands of cells.
  • a group of cells forms a battery module, and multiple battery modules can form a power battery.
  • the assembly of a battery module includes fixing the cells, FPC boards, wiring harnesses, connectors, buses and other structural parts on the mounting bracket; if these structural parts are supplied separately, for the assembly station of the battery module, the types of materials will increase, the difficulty of material control will increase, and the assembly efficiency and product quality will be affected. If the FPC board, connector, bus and other structural parts are integrated with the mounting bracket at the front station and supplied together, the FPC board and bus occupy a large area of space, which is easy to interfere with the fixed installation of the cell. The FPC board also needs to be disassembled and assembled on the mounting bracket after the cell is installed, which adds additional processes and seriously affects the installation efficiency.
  • the battery module in the related art generally uses a snap-on connection method for the installation of the connector.
  • the connector is fixed to the mounting bracket by the snap-on.
  • the snap-on structure is easy to loosen. The vibration during the use of the battery module will cause the connector to shake, which will lead to poor collection contact and affect the reliability of the battery module.
  • this embodiment provides a battery module.
  • the embodiment of the present application provides a battery module, which includes a mounting bracket 1, a busbar assembly 2, a plurality of battery cells 3 and an FPC board assembly 4.
  • the mounting bracket 1 includes a first mounting surface 11 and a second mounting surface 12 disposed opposite to each other, and a plurality of fixing plates 13 are disposed on the first mounting surface 11.
  • the busbar assembly 2 is detachably connected to the mounting bracket 1 and is disposed on the second mounting surface 12; the plurality of battery cells 3 are arranged on the first mounting surface 11 and connected to the busbar assembly 2.
  • the FPC board assembly 4 includes a plurality of FPC boards 41 and a plurality of connectors 42, and the FPC board 41 is uprightly disposed on the first mounting surface 11.
  • the FPC board 41 will not affect the assembly of the battery cells 3, and the busbar assembly 2, the mounting bracket 1 and the FPC board assembly 4 can be pre-assembled in advance.
  • the busbar assembly 2, the mounting bracket 1 and the FPC board assembly 4 are assembled in the front process, and the integrated incoming materials are realized at the assembly station of the battery cells 3, which reduces the types of materials, reduces the difficulty of material control, and also reduces the occupation of equipment and site, thereby improving assembly efficiency and product quality.
  • connection end 411 of the FPC board 41 is fixedly connected to the connector 42, and the connection end 411 is riveted to the fixing plate 13, thereby realizing the installation of the connector 42.
  • the mounting bracket 1 is processed by plastic, and it is easy to realize the riveting with the connection end 411 by hot riveting.
  • the manufacturing process is simple and the processing cost is low.
  • the fixation is reliable and will not be loose. Even if the battery module vibrates during use, it is difficult to cause the shaking of the connector 42, avoiding poor contact and ensuring the working reliability of the battery module.
  • the FPC board assembly 4 further includes a reinforcing plate 43, as shown in FIGS. 3 and 4, the reinforcing plate 43 is connected to the side of the connection end 411 away from the connector 42, and the reinforcing plate 43 is riveted to the fixing plate 13.
  • the reinforcing plate 43 can increase the strength of the connection end 411, and the connector 42 is more firmly fixed.
  • a plurality of rivet studs 131 are provided on the fixing plate 13, and a plurality of positioning holes 40 are provided on the reinforcing plate 43 and the connection end 411, and the rivet studs 131 can pass through the positioning holes 40 and rivet the reinforcing plate 43 and the connection end 411.
  • the mounting bracket 1 further includes a plurality of reinforcing ribs 14, as shown in FIG3, the reinforcing ribs 14 are connected to the side of the fixing plate 13 away from the connection end 411.
  • the mounting bracket 1 of this embodiment is provided with four reinforcing ribs 14, the four reinforcing ribs 14 are parallel to each other and arranged at intervals, one end is connected to the side of the fixing plate 13 away from the connection end 411, and the other end is connected to the first mounting surface 11.
  • the reinforcing ribs 14 can increase the strength of the mounting bracket 1 to prevent the FPC board assembly 4 from being installed insufficiently firmly.
  • the busbar assembly 2 includes a negative output busbar 21, as shown in FIG5, the negative output busbar 21 includes a bent output terminal 211, the bent output terminal 211 is parallel to the axial direction of the battery cell 3, and the bent output terminal 211 is configured to connect adjacent battery modules.
  • the bent output terminal 211 is attached to the mounting bracket 1, and a connecting bolt 212 is provided on the bent output terminal 211, the axial direction of the connecting bolt 212 is perpendicular to the side of the mounting bracket 1, and the connecting bolt 212 is configured to connect adjacent battery modules, and the connecting bolt 212 is threadedly connected to the mounting hole 2111 of the bent output terminal 211.
  • the bent output terminal 211 is processed by a sheet metal bending process, and the length of the bent output terminal 211 extends along the axial direction of the battery cell 3. Therefore, the bent output terminal 211 will not increase the length of the battery cell 3 in the horizontal direction, thereby reducing the space occupied.
  • the connecting bolt 212 When the battery module is connected to the adjacent battery module, it can be tightened in the horizontal direction by the connecting bolt 212, which greatly increases the space utilization.
  • the plurality of FPC boards 41 include a first FPC board 412 and a second FPC board 413, the first FPC board 412 is embedded between the plurality of battery cells 3, and the second FPC board 413 is arranged around the outer periphery of the battery cell 3.
  • the battery module of this embodiment includes two first FPC boards 412 and one second FPC board 413, the two first FPC boards 412 are arranged between the plurality of battery cells 3, the space occupied is reduced, the first mounting surface 11 or the second mounting surface 12 is not blocked, and the welding connection between the battery cell 3 and the busbar assembly 2 is not affected, so as to facilitate the realization of integrated incoming materials.
  • the first FPC board 412 includes a bent extension portion, which can fit the side surfaces of the plurality of battery cells 3.
  • the cross section of the bent extension portion is wavy, which is easy to fit the outer surface of the cylindrical battery cell 3; the first FPC board 412 extends straight at both ends of the bent extension portion, which is easy to fix.
  • the mounting bracket 1 includes a plurality of first stoppers 15, as shown in FIG6 and FIG7, the first stoppers 15 are protrudingly arranged on the first mounting surface 11, and the first stoppers 15 are configured to clamp the battery cell 3.
  • the mounting bracket 1 also includes a plurality of second stoppers 16, as shown in FIG8 and FIG9, the second stoppers 16 are protrudingly arranged on the second mounting surface 12, and the second stoppers 16 are configured to clamp the busbar assembly 2.
  • the battery cell 3 is cylindrical
  • the first stopper 15 is composed of 6 convex blocks with arc surfaces, which are protrudingly arranged on the first mounting surface 11, and the arc surfaces of the 6 convex blocks are concentrically arranged, which can fit the clamped battery cell 3, increase the positioning accuracy of the battery cell 3, and improve the assembly efficiency of the battery cell 3.
  • the second stopper 16 is designed according to the shape of the busbar assembly 2, and is composed of a plurality of convex blocks including curved surfaces and flat surfaces.
  • the structures of the first limiting member 15 and the second limiting member 16 may also be different.

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

Abstract

本申请公开了电池模组，包括安装支架、汇流排组件、多个电芯和FPC板组件，安装支架包括相背设置的第一安装面和第二安装面，第一安装面上设置有多个固定板；汇流排组件可拆卸连接于安装支架，且设置于第二安装面上；多个电芯排布于第一安装面上，且连接于汇流排组件；FPC板组件包括多个FPC板和多个连接器，FPC板直立设置于第一安装面上，FPC板的连接端固定连接连接器，连接端铆接于固定板。

Description

电池模组
本申请要求在2022年11月07日提交中国专利局、申请号为202222956571.5的中国专利申请的优先权，该申请的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，例如涉及一种电池模组。
背景技术
动力电池的最小单元是电芯，一个动力电池包括成百上千的单颗电芯组成，一组电芯形成一个电池模组，多个电池模组可以组成动力电池。为实现电芯的位置固定，电池模组一般设置有安装支架，电池模组的组装包括将电芯、柔性电路(Flexible Printed Circuit，FPC)板、采集线束、连接器、汇流排等结构件固定于安装支架上；如果这些结构件都是分开来料，对于电池模组的组装工位而言，将会导致物料种类增加，物料管控难度增加，影响组装效率和产品质量。
除此之外，相关技术中的电池模组对于连接器的安装一般是采用卡扣连接的方式，连接器通过卡扣固定在安装支架上，卡扣结构容易松动，电池模组使用过程中的振动会造成连接器晃动，进而导致采集接触不良，影响电池模组的可靠性。
发明内容
本申请提供一种电池模组，能够在电芯组装工位实现一体化来料，且连接器和安装支架之间铆接可靠，提高组装效率和组装质量，保证工作可靠性。
本申请提供一种电池模组，包括：
安装支架，包括相背设置的第一安装面和第二安装面，所述第一安装面上设置有多个固定板；
汇流排组件，可拆卸连接于所述安装支架，且设置于所述第二安装面上；
多个电芯，排布于所述第一安装面上，且连接于所述汇流排组件；
FPC板组件，包括多个FPC板和多个连接器，所述FPC板直立设置于第一安装面上，所述FPC板的连接端固定连接所述连接器，所述连接端铆接于所述固定板。
在一实施例中，所述FPC板组件还包括补强板，所述补强板连接于所述连接端上背离所述连接器的一侧，所述补强板铆接于所述固定板。
在一实施例中，所述固定板上设置有多个铆柱，所述补强板和所述连接端上均设置有多个定位孔，所述铆柱能够穿过所述定位孔并铆接所述补强板和所述连接端。
在一实施例中，所述安装支架还包括多个加强筋，所述加强筋连接于所述固定板上背离所述连接端的一侧。
在一实施例中，所述汇流排组件包括负极输出汇流排，所述负极输出汇流排包括折弯输出端，所述折弯输出端平行于所述电芯的轴向，所述折弯输出端设置为连接相邻电池模组。
在一实施例中，所述折弯输出端贴合于所述安装支架，所述折弯输出端上设置有连接螺栓，所述连接螺栓的轴向垂直于所述安装支架的侧面，所述连接螺栓设置为连接所述相邻电池模组，所述连接螺栓螺接于所述折弯输出端的安装孔。
在一实施例中，多个所述FPC板包括第一FPC板和第二FPC板，所述第一FPC板嵌设于多个所述电芯之间，所述第二FPC板围设于所述电芯的外周。
在一实施例中，所述第一FPC板包括弯折延伸部，所述弯折延伸部能够贴合多个所述电芯的侧面。
在一实施例中，所述安装支架包括多个第一限位件，所述第一限位件凸出设置于所述第一安装面上，所述第一限位件设置为卡装所述电芯。
在一实施例中，所述安装支架包括多个第二限位件，所述第二限位件凸出设置于所述第二安装面上，所述第二限位件设置为卡装汇流排组件。
本申请的有益效果：
本申请所提供的电池模组，FPC板直立设置于第一安装面上，因此，FPC板不会影响电芯的组装，可以实现汇流排组件、安装支架和FPC板组件的提前预组装，汇流排组件、安装支架和FPC板组件在前道工序进行组装，实现一体来料，减少物料种类，降低物料管控难度，也减少了设备和场地的占用，进而提升组装效率和产品质量；同时，FPC板的连接端固定连接连接器，连接端铆 接于固定板，进而实现连接器的安装，制成工艺简单且加工成本低，固定可靠，不会产生松动，即使电池模组在使用过程中的振动也难以造成连接器的晃动，避免采集接触不良，保证电池模组的工作可靠性。
附图说明
图1是本申请实施例提供的电池模组的结构示意图一；
图2是本申请实施例提供的电池模组的结构示意图二；
图3是图1中A部分的局部放大示意图；
图4是图2中B部分的局部放大示意图；
图5是本申请实施例提供的负极输出汇流排的结构示意图；
图6是本申请实施例提供的安装支架的结构示意图一；
图7是图6中C部分的局部放大示意图；
图8是本申请实施例提供的安装支架的结构示意图二；
图9是图8中D部分的局部放大示意图。
图中：
1、安装支架；11、第一安装面；12、第二安装面；13、固定板；131、铆柱；14、加强筋；15、第一限位件；16、第二限位件；2、汇流排组件；21、负极输出汇流排；211、折弯输出端；2111、安装孔；212、连接螺栓；3、电芯；4、FPC板组件；40、定位孔；41、FPC板；411、连接端；412、第一FPC板；413、第二FPC板；42、连接器；43、补强板。
具体实施方式
在本申请的描述中，除非另有明确的规定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；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或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，可以根据实际情况理解上述术语在本申请中的含义。
在本申请中，除非另有明确的规定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第 一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
动力电池的最小单元是电芯，动力电池包括成百上千的单颗电芯组成，一组电芯形成一个电池模组，多个电池模组可以组成动力电池。电池模组的组装包括将电芯、FPC板、采集线束、连接器、汇流排等结构件固定于安装支架上；如果这些结构件都是分开来料，对于电池模组的组装工位而言，将会导致物料种类增加，物料管控难度增加，影响组装效率和产品质量。如果将FPC板、连接器和汇流排等结构件与安装支架在前道工位上进行一体化组装并一起来料，FPC板和汇流排所占空间面积较大，容易对电芯的固定安装产生干涉，还需要将FPC板拆卸，在电芯安装之后再将FPC板组装到安装支架上，额外增加了工序，严重影响安装效率。
除此之外，相关技术中的电池模组对于连接器的安装一般是采用卡扣连接的方式，连接器通过卡扣固定在安装支架上，卡扣结构容易松动，电池模组使用过程中的振动会造成连接器晃动，进而导致采集接触不良，影响电池模组的可靠性。为解决上述问题，本实施例提供一种电池模组。
如图1-图9所示，本申请实施例提供一种电池模组，电池模组包括安装支架1、汇流排组件2、多个电芯3和FPC板组件4。安装支架1包括相背设置的第一安装面11和第二安装面12，第一安装面11上设置有多个固定板13。汇流排组件2可拆卸连接于安装支架1，且设置于第二安装面12上；多个电芯3排布于第一安装面11上，且连接于汇流排组件2。FPC板组件4包括多个FPC板41和多个连接器42，FPC板41直立设置于第一安装面11上，因此，FPC板41不会影响电芯3的组装，可以实现汇流排组件2、安装支架1和FPC板组件4的提前预组装，汇流排组件2、安装支架1和FPC板组件4在前道工序进行组装，在电芯3的组装工位实现一体来料，减少物料种类，降低物料管控难度，也减少了设备和场地的占用，进而提升组装效率和产品质量。
FPC板41的连接端411固定连接连接器42，连接端411铆接于固定板13，进而实现连接器42的安装。可选地，安装支架1采用塑料进行加工，易于通过热铆的固定方式实现与连接端411的铆接，制成工艺简单且加工成本低，固定 可靠，不会产生松动，即使电池模组在使用过程中的振动也难以造成连接器42的晃动，避免采集接触不良，保证电池模组的工作可靠性。
在一实施例中，FPC板组件4还包括补强板43，如图3和图4所示，补强板43连接于连接端411上背离连接器42的一侧，补强板43铆接于固定板13。补强板43能够增加连接端411的强度，对连接器42的固定更为牢固。示例性地，固定板13上设置有多个铆柱131，补强板43和连接端411上均设置有多个定位孔40，铆柱131能够穿过定位孔40并铆接补强板43和连接端411。
在一实施例中，安装支架1还包括多个加强筋14，如图3所示，加强筋14连接于固定板13上背离连接端411的一侧。本实施例的安装支架1设置有4个加强筋14，4个加强筋14相互平行且间隔排布，一端连接于固定板13上背离连接端411的一侧，另一端连接于第一安装面11。加强筋14能够增加安装支架1的强度，避免FPC板组件4的安装不够牢固。
在一实施例中，汇流排组件2包括负极输出汇流排21，如图5所示，负极输出汇流排21包括折弯输出端211，折弯输出端211平行于电芯3的轴向，折弯输出端211设置为连接相邻电池模组。示例性地，折弯输出端211贴合于安装支架1，折弯输出端211上设置有连接螺栓212，连接螺栓212的轴向垂直于安装支架1的侧面，连接螺栓212设置为连接相邻电池模组，连接螺栓212螺纹连接于折弯输出端211的安装孔2111。折弯输出端211通过钣金折弯工艺加工而成，折弯输出端211的长度沿电芯3的轴向延伸，因此，折弯输出端211不会增加电芯3水平方向的长度，减少对空间的占用。当电池模组与相邻电池模组进行连接时，通过连接螺栓212沿水平方向拧紧即可，极大增加空间利用率。
在一实施例中，多个FPC板41包括第一FPC板412和第二FPC板413，第一FPC板412嵌设于多个电芯3之间，第二FPC板413围设于电芯3的外周。本实施例的电池模组包括两个第一FPC板412和一个第二FPC板413，两个第一FPC板412穿设于多个电芯3之间，减少对空间面积的占用，不会遮挡第一安装面11或者第二安装面12，不会影响电芯3和汇流排组件2之间的焊接连接，便于实现一体化来料。
在一实施例中，第一FPC板412包括弯折延伸部，弯折延伸部能够贴合多个电芯3的侧面。弯折延伸部的截面呈波浪形，易于贴合圆柱型的电芯3的外表面；第一FPC板412在弯折延伸部的两端呈直线延伸，便于进行固定。
在一实施例中，安装支架1包括多个第一限位件15，如图6和图7所示，第一限位件15凸出设置于第一安装面11上，第一限位件15设置为卡装电芯3。示例性地，安装支架1还包括多个第二限位件16，如图8和图9所示，第二限 位件16凸出设置于第二安装面12上，第二限位件16设置为卡装汇流排组件2。在本实施例中，电芯3为圆柱型，第一限位件15为6个带有弧面的凸块围设组成，凸块凸出设置于第一安装面11上，6个凸块的弧面同心设置，能够贴合卡接电芯3，增加对电芯3的定位精度，提高电芯3的组装效率。第二限位件16根据汇流排组件2的外形进行设计，由包括曲面和平面的多个凸块组成。当然，在其它实施例中，根据电芯3和汇流排组件2的外形不同，第一限位件15和第二限位件16的结构也可以有所不同。

Claims (10)

  1. 电池模组，包括：
    安装支架(1)，包括相背设置的第一安装面(11)和第二安装面(12)，所述第一安装面(11)上设置有多个固定板(13)；
    汇流排组件(2)，可拆卸连接于所述安装支架(1)，且设置于所述第二安装面(12)上；
    多个电芯(3)，排布于所述第一安装面(11)上，且连接于所述汇流排组件(2)；
    柔性电路FPC板组件(4)，包括多个FPC板(41)和多个连接器(42)，所述FPC板(41)直立设置于第一安装面(11)上，所述FPC板(41)的连接端(411)固定连接所述连接器(42)，所述连接端(411)铆接于所述固定板(13)。
  2. 根据权利要求1所述的电池模组，其中，所述FPC板组件(4)还包括补强板(43)，所述补强板(43)连接于所述连接端(411)上背离所述连接器(42)的一侧，所述补强板(43)铆接于所述固定板(13)。
  3. 根据权利要求2所述的电池模组，其中，所述固定板(13)上设置有多个铆柱(131)，所述补强板(43)和所述连接端(411)上均设置有多个定位孔(40)，所述铆柱(131)能够穿过所述定位孔(40)并铆接所述补强板(43)和所述连接端(411)。
  4. 根据权利要求1所述的电池模组，其中，所述安装支架(1)还包括多个加强筋(14)，所述加强筋(14)连接于所述固定板(13)上背离所述连接端(411)的一侧。
  5. 根据权利要求1所述的电池模组，其中，所述汇流排组件(2)包括负极输出汇流排(21)，所述负极输出汇流排(21)包括折弯输出端(211)，所述折弯输出端(211)平行于所述电芯(3)的轴向，所述折弯输出端(211)设置为连接相邻电池模组。
  6. 根据权利要求5所述的电池模组，其中，所述折弯输出端(211)贴合于所述安装支架(1)，所述折弯输出端(211)上设置有连接螺栓(212)，所述连接螺栓(212)的轴向垂直于所述安装支架(1)的侧面，所述连接螺栓(212)设置为连接所述相邻电池模组，所述连接螺栓(212)螺接于所述折弯输出端(211)的安装孔(2111)。
  7. 根据权利要求1所述的电池模组，其中，多个所述FPC板(41)包括第一FPC板(412)和第二FPC板(413)，所述第一FPC板(412)嵌设于多个 所述电芯(3)之间，所述第二FPC板(413)围设于所述电芯(3)的外周。
  8. 根据权利要求7所述的电池模组，其中，所述第一FPC板(412)包括弯折延伸部，所述弯折延伸部能够贴合多个所述电芯(3)的侧面。
  9. 根据权利要求1-8任一项所述的电池模组，其中，所述安装支架(1)包括多个第一限位件(15)，所述第一限位件(15)凸出设置于所述第一安装面(11)上，所述第一限位件(15)设置为卡装所述电芯(3)。
  10. 根据权利要求1-8任一项所述的电池模组，其中，所述安装支架(1)包括多个第二限位件(16)，所述第二限位件(16)凸出设置于所述第二安装面(12)上，所述第二限位件(16)设置为卡装所述汇流排组件(2)。
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