WO2024255926A1 - 导电件、汇流排及电池模组 - Google Patents

导电件、汇流排及电池模组 Download PDF

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Publication number
WO2024255926A1
WO2024255926A1 PCT/CN2024/111008 CN2024111008W WO2024255926A1 WO 2024255926 A1 WO2024255926 A1 WO 2024255926A1 CN 2024111008 W CN2024111008 W CN 2024111008W WO 2024255926 A1 WO2024255926 A1 WO 2024255926A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
conductive
groove
battery cell
battery
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.)
Pending
Application number
PCT/CN2024/111008
Other languages
English (en)
French (fr)
Inventor
李放
王海旭
李幸融
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 Energy Co Ltd
Original Assignee
Eve Energy 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 Energy Co Ltd filed Critical Eve Energy Co Ltd
Priority to US18/927,430 priority Critical patent/US20250141057A1/en
Priority to EP24208846.6A priority patent/EP4546524A1/en
Publication of WO2024255926A1 publication Critical patent/WO2024255926A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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
    • H01M50/50—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
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • 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 conductive member, a busbar including the conductive member, and a battery module including the busbar.
  • a cylindrical battery module usually includes two groups of integrated busbar (Cells Contact System, CCS) components and multiple battery cells.
  • the multiple battery cells are arranged between two CCS components.
  • Each group of CCS components includes a bus, and the batteries in the battery module are connected in series and parallel through the bus.
  • the cylindrical battery module bus in the related art is usually connected to the battery cell by resistance welding or laser welding.
  • hundreds or even thousands of battery cells are usually required to be used in series and parallel in the battery module.
  • the positive and negative electrodes of each battery cell are welded to the conductive parts on the bus, which is a large workload and leads to low production efficiency of the battery module.
  • the greater the number of welds the greater the risk of welding failure, which is not conducive to improving the production quality of the battery module.
  • the present application provides a conductive member, comprising a first connector and a second connector connected to the first connector, wherein the first connector is configured to be clamped to the outer peripheral side of one of two adjacent battery cells in a first direction, and the second connector is configured to be in contact with the pole of the other of the two adjacent battery cells in the first direction.
  • the first connector is provided with a first clamping hole, which runs through both sides of the first connector in the thickness direction, and the first clamping hole is configured to clamp the battery cell
  • the second connector is provided with a second clamping hole, and the second clamping hole is configured to clamp the pole.
  • a plurality of first elastic claws are arranged around the periphery of the first clamping hole, the plurality of first elastic claws surround the center of the first clamping hole, two adjacent first elastic claws are spaced apart, and the plurality of first elastic claws are clamped with the outer peripheral side of the battery core.
  • a plurality of second elastic claws are arranged around the periphery of the second clamping hole, the second elastic claws surround the center of the second clamping hole, two adjacent second elastic claws are spaced apart, and the plurality of second elastic claws are clamped with the pole.
  • all of the second elastic claws are protrudingly arranged on the side of the second connector facing the battery cell, and all of the second elastic claws are provided with abutment ends at the ends facing away from the second connector, and the abutment ends abut against the pole adapter plate located at one end of the battery cell.
  • the second connector is welded to the pole.
  • the first connector and the second connector are spaced apart and distributed in parallel in a second direction, the second direction is perpendicular to the first direction, and the conductive member further includes a third connector, and the first connector and the second connector are respectively connected to the third connector at an angle.
  • the present application provides a busbar, comprising a plurality of rows of conductive bars distributed sequentially along a first direction, each row of the conductive bars comprising at least one of the above-mentioned conductive members, a first connecting member of the conductive member being configured to be connected to one of two adjacent battery cells in the first direction, and a second connecting member of the conductive member being configured to be in contact with the other of the two adjacent battery cells in the first direction.
  • the conductive bar has at least two conductive parts
  • all the conductive parts in the same row of the conductive bar are distributed in sequence along a third direction
  • the third direction is perpendicular to the second direction
  • the third direction forms an angle with the first direction
  • the first connectors in two adjacent conductive parts in the same row of the conductive bar are connected
  • the second connectors in two adjacent conductive parts in the same row of the conductive bar are spaced apart.
  • the present application provides a battery module, comprising an insulating bracket, a plurality of battery cells and the above-mentioned bus, wherein the insulating bracket is arranged on one side of the battery cell in the second direction, an FPC board is arranged on the insulating bracket, a plurality of the conductive bars in the bus are respectively electrically connected to the FPC board, and a first limiting groove is arranged on the side of the insulating bracket facing the battery cell, and the conductive bar is limited in the first limiting groove.
  • a second limiting groove is further provided on the insulating bracket, and the second limiting groove is located on the side of the insulating bracket away from the first limiting groove.
  • the FPC board is limited in the second limiting groove.
  • the FPC board has a plurality of collecting terminals, and each row of the conductive rows corresponds to one collecting terminal.
  • the insulating bracket is penetrated by a through hole, and the through hole is respectively connected to the first limiting groove and the second limiting groove, and the collecting terminal passes through the through hole to be connected to the corresponding conductive row.
  • the first limiting groove includes multiple groups of groove groups, and the multiple groups of groove groups are distributed in sequence along the first direction, and the groove groups correspond one-to-one to the conductive bars, each group of the groove groups includes a first groove and a second groove, and the first groove and the second groove in each group of the groove groups correspond one-to-one, each of the first connectors of the conductive bar corresponds to a first groove, and each of the second connectors of the conductive bar corresponds to a second groove, the first connector is limited in the first groove, and the second connector is limited in the second groove, and a first connecting port is arranged between the first groove and the corresponding second groove.
  • the slot group has at least two of the first slots and at least two of the second slots
  • all of the first slots in each group of the slot groups are distributed sequentially along the third direction
  • all of the second slots in each group of the slot groups are distributed sequentially along the third direction
  • two adjacent first slots in the same group of the slot groups are connected by a second connecting port
  • two adjacent second slots in the same group of the slot groups are spaced apart.
  • the first slot of one group of slot groups partially extends into the second slot of the other group of slot groups.
  • the insulating bracket is further provided with a plurality of third clamping holes, the third clamping holes correspond one-to-one to the plurality of battery cells, and the third clamping holes are configured to be clamped with the poles.
  • the battery module also includes a negative output component and a positive output component, the negative output component is clamped with the negative output terminal of the battery module, the positive output component is clamped with the positive output terminal of the battery module, and the negative output component and the positive output component are respectively arranged at opposite ends of the insulating bracket in the first direction.
  • the battery module also includes a box body, and the sides of the multiple battery cells facing away from the insulating bracket are fixed to the box body through a structural adhesive layer.
  • the conductive member provided in the present application is clamped with the outer peripheral side of the battery cell through the first connector, which reduces the welding parts between the conductive member and the battery cell, facilitates the connection between the conductive member and the battery cell, is beneficial to improving the connection efficiency between the conductive member and the battery cell, and reduces the possibility of welding failure between the conductive member and the battery cell.
  • the busbar clamps the conductive member to the outer peripheral side of the battery cell through the first connector, which can also reduce the welding parts between the busbar and the battery cell, which is conducive to improving the assembly efficiency of the busbar and the battery cell, and facilitates the assembly of the busbar and the battery cell.
  • the welding parts between the busbar and the battery cell are reduced, the risk of welding failure between the busbar and the battery cell is reduced, and the production quality of the battery module is improved.
  • FIG1 is a perspective view of a battery module according to an embodiment (the box is not shown in the figure);
  • FIG2 is an assembly diagram of the busbar, the positive output member, the negative output member and the battery cell according to the embodiment
  • Figure 3 is an enlarged view of point A in Figure 2;
  • FIG4 is an exploded view of the insulating bracket, the FPC board, the positive output component and the negative output component according to the embodiment;
  • FIG5 is an enlarged view of point B in FIG4;
  • FIG6 is a perspective view of a conductive bar according to an embodiment
  • FIG7 is a three-dimensional view of the conductive bar according to the embodiment from another angle
  • FIG8 is a perspective view of the insulating bracket according to the embodiment.
  • FIG9 is an enlarged view of point C in FIG8 ;
  • FIG10 is an enlarged view of point D in FIG8 ;
  • FIG11 is a perspective view of the positive electrode output member according to the embodiment.
  • FIG. 12 is a three-dimensional view of the negative electrode output member according to the embodiment.
  • Conductive bar 11. Conductive member; 111. First connector; 1111. First clamping hole; 1112. First elastic clamping claw; 112. Second connector; 1121. Second clamping hole; 1122. Second elastic clamping claw; 11221. Abutment end; 113. Third connector; 2. Insulating bracket; 21. Slot group; 211. First slot; 212. Second slot; 22. Through hole; 23. First avoidance hole; 24. Third clamping hole; 25. First communication port; 26. Second communication port; 27.
  • 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 the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact.
  • a first feature being “above”, “above”, and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or 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 the first feature being directly below and obliquely below the second feature, or indicates that the first feature is lower in level than the second feature.
  • the present application provides a busbar 100, which is used in a battery module.
  • the battery module includes a plurality of battery cells 200
  • the battery cell 200 is a columnar battery cell 200
  • the battery cell 200 includes a packaging shell, a core body and a pole 201 protruding from one end of the packaging shell
  • the core body is encapsulated inside the packaging shell
  • the packaging shell is a conductor
  • the first pole ear of the core body is electrically connected to the packaging shell
  • the second pole ear of the core body is electrically connected to the pole 201.
  • the negative pole ear of the core body is electrically connected to the packaging shell, that is, the first pole ear is the negative pole ear
  • the packaging shell serves as the negative electrode of the battery cell 200
  • the positive pole ear of the core body is electrically connected to the pole 201, that is, the second pole ear is the positive pole ear, so that the pole 201 is the positive electrode of the battery cell 200.
  • the busbar 100 includes a plurality of rows of conductive bars 1 distributed in sequence along a first direction.
  • the first direction is the length direction of the battery module, i.e., the X direction in the figure.
  • Each row of conductive bars 1 includes at least one conductive member 11.
  • the conductive member 11 is combined in the busbar 100 to describe the structure of the conductive member 11.
  • Each conductive member 11 includes a first connector 111 and a second connector 112 connected to the first connector 111.
  • the first connector 111 is configured to be clamped with the outer peripheral side of one of the two adjacent battery cells 200 in the first direction, that is, the first connector 111 is clamped with the package shell of one of the two adjacent battery cells 200 in the first direction, and the second connector 112 is configured to contact the pole 201 of the other of the two adjacent battery cells 200 in the first direction.
  • the first connectors 111 in two adjacent rows of conductive bars 1 are spaced apart.
  • the conductive member 11 is clamped with the outer peripheral side of the battery cell 200 through the first connector 111, which reduces the welding parts of the conductive member 11 and the battery cell 200, facilitates the connection of the conductive member 11 and the battery cell 200, is conducive to improving the connection efficiency of the conductive member 11 and the battery cell 200, and reduces the possibility of welding failure between the conductive member 11 and the battery cell 200.
  • the conductive bar 1 in the busbar 100 includes at least one conductive member 11, in this embodiment, the conductive member 11 is clamped to the outer peripheral side of the battery cell 200 through the first connector 111, which can also reduce the welding parts between the busbar 100 and the battery cell 200, which is beneficial to improving the assembly efficiency of the busbar 100 and the battery cell 200 and facilitating the assembly of the busbar 100 and the battery cell 200.
  • the welding parts between the busbar 100 and the battery cell 200 are reduced, the risk of welding failure between the busbar 100 and the battery cell 200 is reduced, thereby improving the production quality of the battery module.
  • the first connector 111 is provided with a first clamping hole 1111, which is configured to clamp the battery cell 200.
  • the first clamping hole 1111 penetrates both sides of the first connector 111 in the thickness direction, and the second connector 112 is provided with a second clamping hole 1121, which is configured to clamp the pole 201.
  • the first clamping hole 1111 on the first connector 111 By providing the first clamping hole 1111 on the first connector 111, the first clamping hole 1111 is clamped with the outer peripheral side of the battery cell 200, thereby reducing the difficulty of clamping the battery cell 200 with the first connector 111; by providing the second clamping hole 1121 on the second connector 112, the second clamping hole 1121 is clamped with the pole 201 of the battery cell 200, and the second connector 112 is clamped with the pole 201 through the second clamping hole 1121, thereby achieving electrical connection between the second connector 112 and the battery cell 200.
  • the first connector 111 and the second connector 112 are connected to the battery cell 200 by snap-fitting, so that the electrical connection between the bus 100 and the battery cell 200 does not require welding at all, further improving the assembly efficiency of the bus 100 and the battery cell 200.
  • no welding equipment is required during the assembly process of the bus 100 and the battery cell 200.
  • the battery cell 200 is a cylindrical battery cell, and the first clamping holes 1111 are all round holes.
  • the battery cell 200 may also be a square column battery cell.
  • the first clamping holes 1111 are square holes.
  • the shape of the first clamping holes 1111 is flexibly adjusted according to the shape of the battery cell 200.
  • a plurality of first elastic claws 1112 are arranged around the periphery of the first clamping hole 1111.
  • the plurality of first elastic claws 1112 surround the center of the first clamping hole 1111 in a circle. Two adjacent first elastic claws 1112 are spaced apart.
  • the plurality of first elastic claws 1112 are clamped with the outer peripheral side of the battery cell 200.
  • the first elastic claws 1112 are conductors, and the first elastic claws 1112 and the first connector 111 are made of the same material.
  • the first elastic claws 1112 When the first clamping hole 1111 is clamped with the outer peripheral side of the battery cell 200, the first elastic claws 1112 are clamped with the outer peripheral side of the battery cell 200.
  • the first elastic claws 1112 apply a certain clamping force to the battery cell 200, so that the first connector 111 is more firmly connected to the battery cell 200, and the risk of the first connector 111 falling off from the battery cell 200 is reduced.
  • a plurality of second elastic claws 1122 are arranged around the periphery of the second clamping hole 1121.
  • the second elastic claws 1122 surround the center of the second clamping hole 1121 in one circle. Two adjacent second elastic claws 1122 are spaced apart.
  • the plurality of second elastic claws 1122 are clamped with the pole 201.
  • the second elastic claws 1122 are conductive bodies, and the second elastic claws 1122 and the second connector 112 are made of the same material.
  • the second elastic claws 1122 are clamped with the outer peripheral side of the pole 201. Under the action of the second elastic claws 1122, the pole 201 is not easy to come out of the second connector 112, and the contact area between the busbar 100 and the pole 201 can also be increased by the second elastic claws 1122.
  • a pole adapter plate 202 is provided at one end of the pole 201 close to the inner part of the core, and the positive pole ear of the core is connected to the pole 201 through the pole adapter plate 202, and the pole adapter plate 202 is partially exposed at the axial end of the battery cell 200.
  • All the second elastic claws 1122 are protrudingly arranged on the side of the second connector 112 facing the battery cell 200, and all the second elastic claws 1122 are provided with abutment ends 11221 at the ends facing away from the second connector 112, and the abutment ends 11221 abut on the pole adapter plate 202 located at one end of the battery cell 200.
  • the abutting end 11221 is abutted against the pole adapter plate 202.
  • the pole adapter plate 202 is used to provide support for the second elastic claw 1122, which is conducive to snapping the second connector 112 into place; on the other hand, the abutting end 11221 can increase the electrical connection area between the bus 100 and the battery cell 200, thereby improving the connection reliability between the bus 100 and the battery cell 200.
  • the second connector 112 is welded to the pole 201 . This design does not require the second clamping hole 1121 to be provided on the second connector 112 , and reduces the internal connection resistance.
  • the first connector 111 and the second connector 112 are spaced apart and distributed in parallel in the second direction, and the second direction is perpendicular to the first direction.
  • the second direction is the height direction of the battery module (the axial direction of the battery cell 200), that is, the second direction is the Z direction in the figure
  • the conductive member also includes a third connector 113, and the first connector 111 and the second connector 112 are respectively connected to the third connector 113 at an angle.
  • two battery cells 200 adjacent to each other in the first direction are generally arranged on the same horizontal plane, and the first connector 111 and the second connector 112 are spaced apart and distributed in parallel in the second direction, so that it is easy to clamp the first connector 111 and the second connector 112 with the battery cell 200, and prevent the position interference of the two first connectors 111 and the second connector 112 adjacent to each other in the first direction.
  • the third connector 113 is perpendicular to the first connector 111 and the second connector 112, respectively, which is conducive to reducing the size of the busbar 100.
  • the angle between the third connector 113 and the first connector 111 and the second connector 112 can also be flexibly adjusted as needed, and the angle between the third connector 113 and the first connector 111 and the second connector 112 is not limited here.
  • the third direction is perpendicular to the second direction, and the third direction is at an angle to the first direction
  • the third direction is the width direction of the battery module, that is, the third direction is the Y direction in the figure
  • the first connectors 111 in two adjacent conductive members 11 in the same row of conductive bars 1 are connected, and the second connectors 112 in two adjacent conductive members 11 in the same row of conductive bars 1 are spaced apart.
  • the third direction is perpendicular to the first direction.
  • the first connectors 111 in two adjacent conductive members 11 in the same row of conductive bars 1 are connected, so that all conductive members 11 in the same row of conductive bars 1 are connected in parallel to meet the use requirements.
  • the battery module includes an insulating support 2, a plurality of battery cells 200, and a busbar 100 of any of the above structures.
  • the insulating support 2 is arranged on one side of the battery cell 200 in the second direction (i.e., the Z direction in the figure).
  • a flexible printed circuit (FPC) board 3 is arranged on the insulating support 2.
  • the FPC board 3 is a flexible circuit board.
  • a plurality of conductive bars 1 in the busbar 100 are electrically connected to the FPC board 3 respectively.
  • a first limiting groove is arranged on the side of the insulating support 2 facing the battery cell 200, and the conductive bar 1 is limited in the first limiting groove.
  • the busbar 100 is limited by the first limiting groove on the insulating support 2 to facilitate the assembly of the battery module.
  • the busbar 100 of any of the above structures is connected to the battery cell 200, it is beneficial to improve the assembly efficiency of the battery module, and there are fewer welding points in the battery module, and the probability of welding failure is small, so the quality of the battery module is good.
  • the busbar 100 and the FPC board 3 are respectively limited in the first limiting groove and the second limiting groove 28, so that the busbar 100 and the FPC board 3 are respectively located on the opposite sides of the insulating support 2 in the second direction, which makes full use of the space on the insulating support 2 and is conducive to the arrangement of the busbar 100 and the insulating support 2.
  • the third connector 113 is located at the first connecting port 25, and the third connector 113 is avoided through the first connecting port 25.
  • the first groove 211 limits the first connector 111 in the conductive member 11
  • the second groove 212 limits the second connector 112 of the conductive member 11 , which is beneficial for positioning each conductive member 11 and reducing the risk of displacement of the busbar 100 on the insulating bracket 2 .
  • a through hole 22 is provided through the bottom of each second slot 212 , so that the collecting end 31 can pass through the through hole 22 to connect with each row of conductive bars 1 .
  • the slot group 21 has at least two first slots 211 and at least two second slots 212
  • all the first slots 211 in each slot group 21 are sequentially distributed along the third direction
  • all the second slots 212 in each slot group 21 are sequentially distributed along the third direction.
  • Two adjacent first slots 211 in the same slot group 21 are connected through the second connecting port 26, and two adjacent second slots 212 in the same slot group 21 are spaced apart.
  • the second connecting port 26 can be set to avoid the portion where two adjacent first connectors 111 in the same row of conductive bars 1 are connected.
  • the first connectors 111 and the second connectors 112 of two adjacent rows of conductive members 11 in the first direction are distributed one above the other, and in two adjacent groups of slot groups 21, the first slots 211 of one group of slot groups 21 partially extend into the second slots 212 of the other group of slot groups 21, and the two adjacent first slots 211 and second slots 212 in the first direction partially overlap, so that the insulating bracket 2 can make the first connectors 111 and the second connectors 112 of two adjacent rows of conductive members 11 in the first direction partially overlap at the same position, which is beneficial to improving the compactness of the internal structure of the battery module.
  • the second clamping hole 1121 passes through both sides of the second connector 112 in the thickness direction.
  • the insulating bracket 2 is also provided with a plurality of third clamping holes 24.
  • the third clamping holes 24 correspond to the plurality of battery cells 200 one by one.
  • the third clamping holes 24 are configured to be clamped with the pole 201.
  • the top of the pole 201 can be clamped in the third clamping hole 24 to prevent the battery cell 200 from moving relative to the insulating bracket 2 and causing the bus 100 to fall off the insulating bracket 2.
  • the battery module further comprises a negative output member 5 and a positive output member 4, the negative output member 5 is clamped with the negative output terminal of the battery module, the positive output member 4 is clamped with the positive output terminal of the battery module, and the negative output member 5 and the positive output member 4 are respectively arranged at opposite ends of the insulating bracket 2 in the first direction.
  • the positive output member 4 and the negative output member 5 are respectively arranged to be connected to the electrical equipment outside the battery module to realize the power output of the battery module.
  • the positive output member 4 comprises a first main body 41 and at least one fourth connector 42 protruding from one side of the first main body 41, the fourth connector 42 is arranged to be clamped with the battery cell 200 at one end of the battery module in the first direction
  • the negative output member 5 comprises a second main body 51 and at least one fifth connector 52 protruding from one side of the second main body 51, the fifth connector 52 is arranged to be clamped with the outer peripheral side of the battery cell 200 at the other end of the battery module in the first direction.
  • the fourth connector 42 is provided with a fourth clamping hole 421 at one end away from the first main body 41, and the fourth clamping hole 421 is clamped with the pole 201 of the battery cell 200;
  • the fifth connector 52 is provided with a fifth clamping hole 521 at one end away from the second main body 51, and the fifth clamping hole 521 is clamped with the outer peripheral side of the battery cell 200.
  • a plurality of third elastic claws 422 are arranged around the periphery of the fourth clamping hole 421, and the third elastic claws 422 are configured to clamp the pole 201 of the battery cell 200; a plurality of fourth elastic claws 522 are arranged around the periphery of the fifth clamping hole 521, and the fourth elastic claws 522 are configured to clamp the outer peripheral side of the battery cell 200.
  • a groove 27 is recessed on the side of the insulating bracket 2 facing away from the battery cell 200, the first main body 41 is installed in the groove 27, and a first avoidance hole 23 is provided on the side wall of the groove 27.
  • the groove 27 is connected to the side of the insulating bracket 2 facing the battery cell 200 through the first avoidance hole 23, and the fourth connector 42 is connected to the pole 201 of the battery cell 200 through the first avoidance hole 23 from the side of the insulating bracket 2 facing away from the battery cell 200;
  • the second main body 51 is respectively connected to multiple fifth connectors 52 through the connecting section 53, and the second main body 51 is all installed on the side of the insulating bracket 2 facing away from the battery cell 200, and the fifth connector 52 is located on the side of the insulating bracket 2 facing the battery cell 200.
  • a second avoidance hole 29 is also provided on the insulating bracket 2, and the fifth connector 52 is connected to the outer peripheral side of the battery cell 200 through the second avoidance hole 29 from the side of the insulating bracket 2 facing away from the battery cell 200.
  • a second groove 212 is provided on the side of the insulating bracket 2 facing the battery cell 200 corresponding to the fourth connector 42, and the fourth connector 42 is limited in the second groove 212.
  • a first groove 211 is provided on the side of the insulating bracket 2 facing the battery cell 200 corresponding to the fifth connector 52, and the fifth connector 52 is limited in the first groove 211.
  • the bottoms of the second grooves 212 are penetrated by through holes 22 , the collecting ends 31 correspond to the second grooves 212 one by one, and the collecting ends 31 pass through the through holes 22 to connect with the second connector 112 or the fourth connector 42 .
  • each second groove 212 has a third locking hole 24 at its bottom.
  • the battery module further includes a box (not shown in the figure), and the side of the multiple battery cells 200 facing away from the insulating bracket 2 is fixed to the box through a structural adhesive layer 6.
  • the multiple battery cells 200 and the box are connected as a whole through the structural adhesive layer 6 to prevent the battery cells 200 from vibrating and being scratched inside the box.
  • the structural adhesive layer 6 is a thermally conductive structural adhesive, which has thermal conductivity and is conducive to heat dissipation of the battery cells 200.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请提供一种导电件、汇流排及电池模组。其中，导电件包括第一连接体和与第一连接体连接的第二连接体，第一连接体设置为与相邻两个电芯的其中一者的外周侧卡接，第二连接体设置为与相邻两个电芯的另一者的极柱接触。导电件通过第一连接体与电芯的外周侧卡接，减少了导电件与电芯的焊接部位，便于将导电件与电芯连接，有利于提高导电件与电芯的连接效率，减小导电件与电芯焊接失效可能性。汇流排将导电件通过第一连接体与电芯的外周侧卡接，也能减少汇流排与电芯的焊接部位，有利于提高汇流排与电芯组装效率，此外，由于减少了汇流排与电芯的焊接部位，因此降低了汇流排与电芯之间焊接失效的风险，提高电池模组的生产质量。

Description

导电件、汇流排及电池模组
本申请要求在2023年10月26日提交中国专利局、申请号为202322889751.0的中国专利申请的优先权，以上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，例如涉及一种导电件，包含此导电件的汇流排，及包括此汇流排的电池模组。
背景技术
圆柱型电池模组通常包括两组集成母排（Cells Contact System，CCS）组件和多个电芯，多个电芯设置在两个CCS组件之间，每组CCS组件包括汇流排，电池模组中的电池通过汇流排实现串并联。
技术问题
相关技术中的圆柱型电池模组汇流排通常通过电阻焊接或激光焊接与电芯连接，然而，由于圆柱型的电芯容量较小，在电池模组中通常需要几百甚至上千个电芯串并联使用，在电芯数量如此多的电池模组中，每个电芯的正、负极均与汇流排上导电件焊接，工作量较大，导致电池模组的生产效率低，并且焊点数量越大焊接失效的风险越大，不利于提高电池模组的生产质量。
技术解决方案
第一方面，本申请提供一种导电件，包括第一连接体和与所述第一连接体连接的第二连接体，所述第一连接体设置为与在第一方向上相邻两个电芯的其中一者的外周侧卡接，所述第二连接体设置为与在第一方向上相邻两个电芯的另一者的极柱接触。
作为所述的导电件的一种可选的技术方案，所述第一连接体设置有第一卡孔，所述第一卡孔贯穿所述第一连接体的厚度方向两侧，所述第一卡孔设置为卡接所述电芯，所述第二连接体设置有第二卡孔，所述第二卡孔设置为卡接所述极柱。
作为所述的导电件的一种可选的技术方案，所述第一卡孔的周部设置有多个第一弹性卡爪，多个所述第一弹性卡爪绕所述第一卡孔的中心环绕一圈，相邻两个所述第一弹性卡爪间隔分布，多个所述第一弹性卡爪与所述电芯的外周侧卡接。
作为所述的导电件的一种可选的技术方案，所述第二卡孔的周部设置有多个第二弹性卡爪，所述第二弹性卡爪绕所述第二卡孔的中心环绕一圈，相邻的两个所述第二弹性卡爪间隔分布，多个所述第二弹性卡爪与所述极柱卡接。
作为所述的导电件的一种可选的技术方案，所有的所述第二弹性卡爪均凸出设置在所述第二连接体朝向所述电芯的一侧，且所有的所述第二弹性卡爪背离所述第二连接体的一端均设置有抵接端，所述抵接端抵接在位于所述电芯的一端部的极柱转接板上。
作为所述的导电件的一种可选的技术方案，所述第二连接体与所述极柱焊接。
作为所述的导电件的一种可选的技术方案，所述第一连接体与所述第二连接体在第二方向上间隔且平行分布，所述第二方向与所述第一方向垂直，所述导电件还包括第三连接体，所述第一连接体和所述第二连接体分别与所述第三连接体呈夹角连接。
第二方面，本申请提供一种汇流排，包括多排沿着第一方向依次分布的导电排，每排所述导电排均包括至少一个上述的导电件，所述导电件的第一连接件设置为与在所述第一方向上相邻两个电芯的其中一者连接，所述导电件的第二连接件设置为与在所述第一方向上相邻两个电芯的另一者接触。
作为所述的汇流排的一种可选的技术方案，当所述导电排具有至少两个所述导电件时，同一排所述导电排的所有所述导电件沿着第三方向依次分布，所述第三方向与所述第二方向垂直，且所述第三方向与所述第一方向呈夹角，同一排所述导电排相邻两个所述导电件中的所述第一连接体相连接，同一排所述导电排相邻两个所述导电件中的所述第二连接体相间隔。
第三方面，本申请提供一种电池模组，包括绝缘支架、多个电芯和上述的汇流排，所述绝缘支架设置在所述电芯在第二方向的一侧，所述绝缘支架上设置有FPC板，所述汇流排中多个所述导电排分别与所述FPC板电连接，所述绝缘支架朝向所述电芯的一侧设置有第一限位槽，所述导电排限位在所述第一限位槽中。
作为所述的电池模组的一种可选的技术方案，所述绝缘支架上还设置有第二限位槽，所述第二限位槽位于所述绝缘支架背离所述第一限位槽的一侧，所述FPC板限位在所述第二限位槽中，所述FPC板具有多个采集端，每排所述导电排对应有一个所述采集端，所述绝缘支架贯穿设置有通孔，所述通孔与所述第一限位槽和所述第二限位槽分别连通，所述采集端穿过所述通孔与所对应的所述导电排连接。
作为所述的电池模组的一种可选的技术方案，所述第一限位槽包括多组槽组，多组所述槽组沿着第一方向依次分布，且所述槽组与所述导电排一一对应，每组所述槽组包括有第一槽和第二槽，每组所述槽组中的所述第一槽和所述第二槽一一对应，每个所述导电排的所述第一连接体均对应有一个所述第一槽，每个所述导电排的所述第二连接体均对应有一个所述第二槽，所述第一连接体限位在所述第一槽中，所述第二连接体限位在所述第二槽中，所述第一槽与相对应的所述第二槽之间设置有第一连通口。
作为所述的电池模组的一种可选的技术方案，当所述槽组具有至少两个所述第一槽和至少两个所述第二槽时，每组所述槽组中所有所述第一槽沿着第三方向依次分布，每组所述槽组中所有所述第二槽沿着所述第三方向依次分布，同一组所述槽组相邻两个所述第一槽通过第二连通口连通，同一组所述槽组相邻两个所述第二槽间隔。
作为所述的电池模组的一种可选的技术方案，相邻两组所述槽组中，其中一组所述槽组的所述第一槽部分延伸至另一组所述槽组的所述第二槽内。
作为所述的电池模组的一种可选的技术方案，所述绝缘支架还设置有多个第三卡孔，所述第三卡孔与多个所述电芯一一对应，所述第三卡孔设置为与所述极柱卡接。
作为所述的电池模组的一种可选的技术方案，还包括负极输出件和正极输出件，所述负极输出件与所述电池模组的负极输出端卡接，所述正极输出件与所述电池模组的正极输出端卡接，所述负极输出件和所述正极输出件分别设置在所述绝缘支架在所述第一方向的相对两端。
作为所述的电池模组的一种可选的技术方案，还包括箱体，多个所述电芯背离所述绝缘支架的一侧通过结构胶层与所述箱体固定。
有益效果
本申请的有益效果为：
本申请提供的导电件通过第一连接体与电芯的外周侧卡接，减少了导电件与电芯的焊接部位，便于将导电件与电芯连接，有利于提高导电件与电芯的连接效率，减小导电件与电芯焊接失效可能性。
由于汇流排中的导电排包括至少一个导电件，汇流排将导电件通过第一连接体与电芯的外周侧卡接，也能减少汇流排与电芯的焊接部位，有利于提高汇流排与电芯组装效率，并且方便了汇流排与电芯的组装。此外，由于减少了汇流排与电芯的焊接部位，因此降低了汇流排与电芯之间焊接失效的风险，提高电池模组的生产质量。
附图说明
图1为实施例所述电池模组的立体图（图中未示出箱体）；
图2为实施例所述汇流排、正极输出件、负极输出件与电芯的组装图；
图3为图2中A处放大图；
图4为实施例所述绝缘支架、FPC板、正极输出件和负极输出件的分解图；
图5为图4中B处放大图；
图6为实施例所述导电排的一角度立体图；
图7为实施例所述导电排的另一角度立体图；
图8为实施例所述绝缘支架的立体图；
图9为图8中C处放大图；
图10为图8中D处放大图；
图11为实施例所述正极输出件的立体图；
图12为实施例所述负极输出件的立体图。
图中：
1、导电排；11、导电件；111、第一连接体；1111、第一卡孔；1112、第一弹性卡爪；112、第二连接体；1121、第二卡孔；1122、第二弹性卡爪；11221、抵接端；113、第三连接体；2、绝缘支架；21、槽组；211、第一槽；212、第二槽；22、通孔；23、第一避让孔；24、第三卡孔；25、第一连通口；26、第二连通口；27、凹槽；28、第二限位槽；29、第二避让孔；3、FPC板；31、采集端；4、正极输出件；41、第一主体；42、第四连接体；421、第四卡孔；422、第三弹性卡爪；5、负极输出件；51、第二主体；52、第五连接体；521、第五卡孔；522、第四弹性卡爪；53、连接段；6、结构胶层；100、汇流排；200、电芯；201、极柱；202、极柱转接板。
本发明的实施方式
下面将结合附图对本申请实施例的技术方案进行描述，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。
在本申请的描述中，除非另有规定和限定，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，除非另有规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征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，或表示第一特征水平高度小于第二特征。
如图1至图6所示，本申请提供一种汇流排100，该汇流排100应用在电池模组中。其中，电池模组包括多个电芯200，电芯200为柱状电芯200，电芯200包括封装壳、芯体和凸出设置在封装壳一端部的极柱201，芯体封装在封装壳的内部，封装壳为导电体，芯体的第一极耳与封装壳电连接，芯体的第二极耳与极柱201电连接。本示例中，芯体的负极耳与封装壳电连接，即，第一极耳为负极耳，封装壳作为电芯200的负极，芯体的正极耳与极柱201电连接，即，第二极耳为正极耳，这样极柱201为电芯200的正极。
其中，汇流排100包括多排沿第一方向依次分布的导电排1，本实施例中，第一方向为电池模组的长度方向，即图中X方向。每排导电排1包括至少一个导电件11。以下将导电件11结合在汇流排100中，描述导电件11的结构。
每个导电件11包括第一连接体111和与第一连接体111连接的第二连接体112，第一连接体111设置为与在第一方向相邻两个电芯200的其中一者的外周侧卡接，即，第一连接体111与在第一方向相邻两个电芯200的其中一者的封装壳卡接，第二连接体112设置为与在第一方向相邻两个电芯200的另一者的极柱201接触，相邻两排导电排1中的第一连接体111间隔。导电件11通过第一连接体111与电芯200的外周侧卡接，减少了导电件11与电芯200的焊接部位，便于将导电件11与电芯200连接，有利于提高导电件11与电芯200的连接效率，减小导电件11与电芯200的焊接失效可能性。
由于汇流排100中的导电排1包括至少一个导电件11，本实施例中将导电件11通过第一连接体111与电芯200的外周侧卡接，也能减少汇流排100与电芯200的焊接部位，有利于提高汇流排100与电芯200的组装效率，并且方便了汇流排100与电芯200的组装，此外，由于减少了汇流排100与电芯200的焊接部位，因此降低了汇流排100与电芯200之间焊接失效的风险，提高电池模组的生产质量。
一实施例中，第一连接体111贯穿设置有第一卡孔1111，第一卡孔1111设置为卡接电芯200，第一卡孔1111贯穿第一连接体111的厚度方向两侧，第二连接体112设置有第二卡孔1121，第二卡孔1121设置为卡接极柱201。通过在第一连接体111上设置第一卡孔1111，利用第一卡孔1111与电芯200的外周侧卡接，降低了电芯200与第一连接体111的卡接难度；通过在第二连接体112上设置第二卡孔1121，利用第二卡孔1121与电芯200的极柱201卡接，第二连接体112通过第二卡孔1121与极柱201卡接，实现第二连接体112与电芯200的电连接。将第一连接体111和第二连接体112均通过卡接的方式与电芯200连接，使得汇流排100与电芯200的电连接完全不需要焊接，进一步提高了汇流排100与电芯200的组装效率，并且汇流排100与电芯200的组装过程中，不需要投入焊接设备，此外，汇流排100与电芯200之间连接部位无焊点，避免汇流排100与电芯200出现焊接失效，保证电池模组的质量。
本示例中，电芯200为圆柱电芯，第一卡孔1111均为圆孔。在其他的示例中，电芯200也可以为方柱电芯，当电芯200为方柱电芯时，第一卡孔1111为方孔。实际实施时，第一卡孔1111的形状根据电芯200的形状灵活调整。
第一卡孔1111的周部设置有多个第一弹性卡爪1112，多个第一弹性卡爪1112绕第一卡孔1111的中心环绕一圈，相邻两个第一弹性卡爪1112间隔分布，多个第一弹性卡爪1112与电芯200的外周侧卡接。第一弹性卡爪1112为导体，而且第一弹性卡爪1112与第一连接体111为同种材质，当第一卡孔1111卡接在电芯200的外周侧时，第一弹性卡爪1112卡接在电芯200的外周侧，通过第一弹性卡爪1112对电芯200施加一定的卡紧力，使得第一连接体111与电芯200连接更加牢固，降低第一连接体111从电芯200上脱落的风险。
第二卡孔1121的周部设置有多个第二弹性卡爪1122，第二弹性卡爪1122绕第二卡孔1121的中心环绕一圈，相邻的两个第二弹性卡爪1122间隔分布，多个第二弹性卡爪1122与极柱201卡接。第二弹性卡爪1122为导电体，而且第二弹性卡爪1122与第二连接体112为同种材质，第二弹性卡爪1122卡接在极柱201的外周侧，在第二弹性卡爪1122的作用下，使得极柱201不易从第二连接体112中脱出，并且也可以通过第二弹性卡爪1122增大汇流排100与极柱201的接触面积。
参照图3，极柱201靠近芯体内部一端设置有极柱转接板202，芯体的正极耳通过极柱转接板202与极柱201连接，极柱转接板202部分外露在电芯200的轴向端部。所有的第二弹性卡爪1122均凸出设置在第二连接体112朝向电芯200的一侧，且所有的第二弹性卡爪1122背离第二连接体112一端均设置有抵接端11221，抵接端11221抵接在位于电芯200一端部的极柱转接板202上。将抵接端11221抵接在极柱转接板202上，一方面，利用极柱转接板202对第二弹性卡爪1122提供支撑，有利于将第二连接体112卡接到位；另一方面，可以通过抵接端11221增加汇流排100与电芯200的电性连接面积，提高汇流排100与电芯200的连接可靠性。
另一实施例中，将第二连接体112与极柱201焊接，此设计，不需要在第二连接体112上设置第二卡孔1121，并且降低连接内阻。
其中，第一连接体111与第二连接体112在第二方向上间隔且平行分布，第二方向与第一方向垂直。本实施例中，第二方向为电池模组的高度方向（电芯200的轴向），即第二方向为图中Z方向，导电件还包括第三连接体113，第一连接体111和第二连接体112分别与第三连接体113呈夹角连接。在实际实施时，在第一方向上相邻的两个电芯200一般是设置在同一水平面上的，设置第一连接体111和第二连接体112在第二方向上间隔且平行分布，这样便于将第一连接体111和第二连接体112与电芯200卡接，防止在第一方向上相邻的两个第一连接体111和第二连接体112发生位置干涉。
本示例中，第三连接体113分别与第一连接体111和第二连接体112垂直，有利于缩小汇流排100的尺寸。在其他的示例中，也可以根据需要灵活调整第三连接体113与第一连接体111和第二连接体112之间的夹角大小，在此不对第三连接体113与第一连接体111和第二连接体112之间的夹角大小做限制。
本实施例中，当导电排1具有至少两个导电件11时，同一排导电排1的所有导电件11沿着第三方向依次分布，第三方向与第二方向垂直，且第三方向与第一方向呈夹角，第三方向为电池模组的宽度方向，即第三方向图中为Y方向，同一排导电排1相邻两个导电件11中的第一连接体111相连接，同一排导电排1相邻两个导电件11中的第二连接体112相间隔。本示例中，第三方向与第一方向垂直。设置同一排导电排1相邻两个导电件11中的第一连接体111相连接，使得同一排导电排1所有的导电件11并联，满足使用需求。
参照图1至图3，电池模组包括绝缘支架2、多个电芯200和上述任一种结构的汇流排100，绝缘支架2设置在电芯200在第二方向（即图中Z方向）的一侧，绝缘支架2上设置有柔性电路（Flexible Printed Circuit，FPC）板3，FPC板3即柔性电路板，汇流排100中多个导电排1分别与FPC板3电连接，绝缘支架2朝向电芯200的一侧设置有第一限位槽，导电排1限位在第一限位槽中。在绝缘支架2上通过第一限位槽对汇流排100进行限位，便于电池模组的组装。此种电池模组中，由于是采用上述任一种结构的汇流排100与电芯200连接，有利于提高电池模组的组装效率，并且电池模组中的焊点少，出现焊接失效的概率小，进而电池模组的质量好。
参照图4，绝缘支架2上还设置有第二限位槽28，第二限位槽28位于绝缘支架2背离第一限位槽的一侧，FPC板3限位在第二限位槽28中，FPC板3具有多个采集端31，每个导电排1均对应有一个采集端31，绝缘支架2贯穿设置有通孔22，通孔22与第一限位槽和第二限位槽28分别连通，采集端31穿过通孔22与所对应的导电排1连接。由于第一限位槽和第二限位槽28分别位于绝缘支架2位于在第二方向的相对两侧，将汇流排100和FPC板3分别限位在第一限位槽和第二限位槽28内，使得汇流排100和FPC板3分别位于绝缘支架2在第二方向上的相对两侧，充分利用了绝缘支架2上的空间，有利于布置汇流排100和绝缘支架2。
参照图8至图10，第一限位槽包括多组槽组21，多组槽组21沿着第一方向依次分布，且槽组21与导电排1一一对应，每组槽组21均包括有第一槽211和第二槽212，每组槽组21中的第一槽211和第二槽212一一对应，每个导电排1的第一连接体111均对应有一个第一槽211，每个导电排1的第二连接体112均对应有一个第二槽212，第一连接体111限位在第一槽211中，第二连接体112限位在第二槽212中，第一槽211与相对应的第二槽212之间设置有第一连通口。实际实施时，第三连接体113位于第一连通口25处，通过第一连通口25避让第三连接体113。通过第一槽211限位导电件11中的第一连接体111，第二槽212限位导电件11的第二连接体112，有利于对每个导电件11进行定位，降低汇流排100在绝缘支架2上移位的风险。
每个第二槽212的槽底均贯穿设置有一个通孔22，这样采集端31可以穿过通孔22与每排导电排1连接。
一实施例中，当槽组21具有至少两个第一槽211和至少两个第二槽212时，每组槽组21中所有第一槽211沿着第三方向依次分布，每组槽组21中所有第二槽212沿着第三方向依次分布，同一组槽组21相邻两个第一槽211通过第二连通口26连通，同一组槽组21相邻两个第二槽212间隔，通过第二连通口26可以设置为避让同一排导电排1中相邻两个第一连接体111相连接的部位。
将多排导电件11沿着第一方向与电芯200组装后，在第一方向上相邻的两排导电件11的第一连接体111和第二连接体112呈一上一下分布，相邻两组槽组21中，其中一组槽组21的第一槽211部分延伸至另一组槽组21的第二槽212内，在第一方向上相邻的两个第一槽211和第二槽212部分重合，从而使绝缘支架2在同一部位上可以使在第一方向上相邻两排导电件11的第一连接体111和第二连接体112部分重叠，有利于提高电池模组内部结构的紧凑性。
第二卡孔1121贯穿第二连接体112厚度方向的两侧，第二连接体112与极柱201卡接时，极柱201的顶部可以穿过第二卡孔1121并凸出于第二连接体112，为了将电芯200限位在绝缘支架2上，绝缘支架2还设置有多个第三卡孔24，第三卡孔24与多个电芯200一一对应，第三卡孔24设置为与极柱201卡接，第二连接体112与极柱201卡接后，极柱201的顶部可以卡接在第三卡孔24中，避免电芯200相对于绝缘支架2移动而导致汇流排100从绝缘支架2上脱落。
本实施例中，参照图1至图4、图11和图12，电池模组还包括负极输出件5和正极输出件4，负极输出件5与电池模组的负极输出端卡接，正极输出件4与电池模组的正极输出端卡接，负极输出件5和正极输出件4分别设置在绝缘支架2在第一方向的相对两端。正极输出件4和负极输出件5分别设置为与电池模组外部的用电设备连接，实现电池模组的电能输出。示例性地，正极输出件4包括第一主体41和至少一个凸出于第一主体41一侧的第四连接体42，第四连接体42设置为与电池模组在第一方向一端上的电芯200卡接，负极输出件5包括第二主体51和至少一个凸出于第二主体51一侧的第五连接体52，第五连接体52设置为与电池模组在第一方向另一端上的电芯200的外周侧卡接。第四连接体42远离第一主体41的一端设置有第四卡孔421，第四卡孔421与电芯200的极柱201卡接；第五连接体52远离第二主体51的一端设置有第五卡孔521，第五卡孔521与电芯200的外周侧卡接。通过在正极输出件4上设置第四卡孔421以及在负极输出件5上设置第五卡孔521，实现伸正极输出件4、负极输出件5与电芯200卡接，这样组装电池模组时，可以完全避免焊接作业，保证电池模组组装的高效性以及电池模组的生产质量。
第四卡孔421的外周部环绕设置有多个第三弹性卡爪422，第三弹性卡爪422设置为卡紧电芯200的极柱201；第五卡孔521的外周环绕设置有多个第四弹性卡爪522，第四弹性卡爪522设置为卡紧电芯200的外周侧。
示例性地，参照图1、图9、图10和图12，绝缘支架2背离电芯200的一侧凹陷设置有凹槽27，第一主体41安装在凹槽27中，凹槽27的侧壁设置有第一避让孔23，凹槽27通过第一避让孔23与绝缘支架2朝向电芯200的一侧连通，第四连接体42由绝缘支架2背离电芯200的一侧穿过第一避让孔23与电芯200的极柱201连接；第二主体51通过连接段53分别与多个第五连接体52连接，第二主体51均安装在绝缘支架2背离电芯200的一侧，第五连接体52位于绝缘支架2朝向电芯200的一侧，绝缘支架2上还设有第二避让孔29，第五连接体52由绝缘支架2背离电芯200的一侧穿过第二避让孔29与电芯200的外周侧连接。
绝缘支架2朝向电芯200的一侧对应第四连接体42设置有第二槽212，第四连接体42限位在第二槽212中，绝缘支架2朝向电芯200的一侧对应第五连接体52设置有第一槽211，第五连接体52限位在第一槽211中。
示例性地，多个第二槽212的槽底均贯穿有通孔22，采集端31与多个第二槽212一一对应，多个采集端31穿过通孔22与第二连接体112或第四连接体42连接。
本示例中，每个第二槽212的槽底均具有一个第三卡孔24。
参照图1，电池模组上还包括箱体（图中未示出），多个电芯200背离绝缘支架2的一侧通过结构胶层6与箱体固定。通过结构胶层6将多个电芯200和箱体连接为一体，防止电芯200在箱体内部振动而擦伤。示例性地，结构胶层6为导热结构胶，导热结构胶具有导热性能，有利于电芯200散热。
实际实施时，将正极输出件4和负极输出件5预先安装在绝缘支架2上，以及将每个汇流排100与每个FPC板3上的采集端31预先连接，使得正极输出件4、负极输出件5、汇流排100和绝缘支架2形成一组合体，将多个电芯200排列好后，将组合体扣合在多个电芯200上，通过结构胶将多个电芯200与箱体固定，这样就完成了电池模组的组装，此种电池模组的组装效率高，且生产质量好。
于本文的描述中，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，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”用于在描述上加以区分，并没有特殊的含义。
在本说明书的描述中，参考术语“一实施例”、“示例”等的描述意指结合该实施例或示例描述的特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
此外，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式是为清楚起见，本领域技术人员应当将说明书作为一个整体，多个实施例中的技术方案也可以适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (17)

  1. 一种导电件，包括第一连接体和与所述第一连接体连接的第二连接体，所述第一连接体设置为与在第一方向上相邻两个电芯的其中一者的外周侧卡接，所述第二连接体设置为与在第一方向上所述相邻两个电芯的另一者的极柱接触。
  2. 根据权利要求1所述的导电件，其中，所述第一连接体设置有第一卡孔，所述第一卡孔贯穿所述第一连接体的厚度方向两侧，所述第一卡孔设置为卡接所述电芯，所述第二连接体设置有第二卡孔，所述第二卡孔设置为卡接所述极柱。
  3. 根据权利要求2所述的导电件，其中，所述第一卡孔的周部设置有多个第一弹性卡爪，多个所述第一弹性卡爪绕所述第一卡孔的中心环绕一圈，相邻两个所述第一弹性卡爪间隔分布，多个所述第一弹性卡爪与所述电芯的外周侧卡接。
  4. 根据权利要求2所述的导电件，其中，所述第二卡孔的周部设置有多个第二弹性卡爪，所述多个第二弹性卡爪绕所述第二卡孔的中心环绕一圈，相邻的两个所述第二弹性卡爪间隔分布，多个所述第二弹性卡爪与所述极柱卡接。
  5. 根据权利要求4所述的导电件，其中，所有的所述第二弹性卡爪均凸出设置在所述第二连接体朝向所述电芯的一侧，且所有的所述第二弹性卡爪背离所述第二连接体的一端均设置有抵接端，所述抵接端抵接在位于所述电芯的一端部的极柱转接板上。
  6. 根据权利要求1所述的导电件，其中，所述第二连接体与所述极柱焊接。
  7. 根据权利要求1至6中任一项所述的导电件，其中，所述第一连接体与所述第二连接体沿第二方向间隔且平行分布，所述导电件还包括第三连接体，所述第一连接体和所述第二连接体分别与所述第三连接体呈夹角连接，其中，所述第二方向与所述第一方向垂直。
  8. 一种汇流排，包括多排沿着第一方向依次分布的导电排，每排所述导电排包括至少一个权利要求1至7中任一项所述的导电件，所述导电件的第一连接件设置为与在所述第一方向上相邻两个电芯的其中一者连接，所述导电件的第二连接件设置为与在所述第一方向上相邻两个电芯的另一者接触。
  9. 根据权利要求8所述的汇流排，其中，在所述导电排具有至少两个所述导电件的情况下，同一排所述导电排的所有所述导电件沿着第三方向依次分布，所述第三方向与所述第一方向呈夹角，同一排所述导电排相邻两个所述导电件中的所述第一连接体相连接，同一排所述导电排相邻两个所述导电件中的所述第二连接体相间隔。
  10. 一种电池模组，包括绝缘支架、多个电芯和权利要求8或9所述的汇流排，所述绝缘支架设置在所述电芯在第二方向的一侧，所述绝缘支架上设置有柔性电路FPC板，所述汇流排中多个所述导电排分别与所述FPC板电连接，所述绝缘支架朝向所述电芯的一侧设置有第一限位槽，所述导电排限位在所述第一限位槽中。
  11. 根据权利要求10所述的电池模组，其中，所述绝缘支架上还设置有第二限位槽，所述第二限位槽位于所述绝缘支架背离所述第一限位槽的一侧，所述FPC板限位在所述第二限位槽中，所述FPC板具有多个采集端，每排所述导电排对应有一个所述采集端，所述绝缘支架贯穿设置有通孔，所述通孔与所述第一限位槽和所述第二限位槽分别连通，所述采集端穿过所述通孔与所对应的所述导电排连接。
  12. 根据权利要求11所述的电池模组，其中，所述第一限位槽包括多组槽组，多组所述槽组沿着第一方向依次分布，且所述槽组与所述导电排一一对应，每组所述槽组包括有第一槽和第二槽，每组所述槽组中的所述第一槽和所述第二槽一一对应，每个所述导电排的第一连接体均对应有一个所述第一槽，每个所述导电排的第二连接体均对应有一个所述第二槽，所述第一连接体限位在所述第一槽中，所述第二连接体限位在所述第二槽中，所述第一槽与相对应的所述第二槽之间设置有第一连通口。
  13. 根据权利要求12所述的电池模组，其中，在所述槽组具有至少两个所述第一槽和至少两个所述第二槽的情况下，每组所述槽组中所有所述第一槽沿着第三方向依次分布，每组所述槽组中所有所述第二槽沿着所述第三方向依次分布，同一组所述槽组相邻两个所述第一槽通过第二连通口连通，同一组所述槽组相邻两个所述第二槽间隔。
  14. 根据权利要求13所述的电池模组，其中，相邻两组所述槽组中，其中一组所述槽组的所述第一槽部分延伸至另一组所述槽组的所述第二槽内。
  15. 根据权利要求10所述的电池模组，其中，所述绝缘支架还设置有多个第三卡孔，所述第三卡孔与多个所述电芯一一对应，所述第三卡孔设置为与极柱卡接。
  16. 根据权利要求10所述的电池模组，还包括负极输出件和正极输出件，所述负极输出件与所述电池模组的负极输出端卡接，所述正极输出件与所述电池模组的正极输出端卡接，所述负极输出件和所述正极输出件分别设置在所述绝缘支架在第一方向的相对两端。
  17. 根据权利要求10至16中任一项所述的电池模组，其中，还包括箱体，多个所述电芯背离所述绝缘支架的一侧通过结构胶层与所述箱体固定。
PCT/CN2024/111008 2023-10-26 2024-08-09 导电件、汇流排及电池模组 Pending WO2024255926A1 (zh)

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