WO2024055802A1 - 极柱、上盖组件、电性转接件、单体电池及电池组 - Google Patents

极柱、上盖组件、电性转接件、单体电池及电池组 Download PDF

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Publication number
WO2024055802A1
WO2024055802A1 PCT/CN2023/113497 CN2023113497W WO2024055802A1 WO 2024055802 A1 WO2024055802 A1 WO 2024055802A1 CN 2023113497 W CN2023113497 W CN 2023113497W WO 2024055802 A1 WO2024055802 A1 WO 2024055802A1
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WO
WIPO (PCT)
Prior art keywords
pole
slot
battery
plate
square
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/CN2023/113497
Other languages
English (en)
French (fr)
Inventor
雷政军
陈孟奇
韩晓宇
袁少伟
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.)
D Aus Energy Storage Technology Xian Co Ltd
Original Assignee
D Aus Energy Storage Technology Xian 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
Priority claimed from CN202222422763.8U external-priority patent/CN219144407U/zh
Priority claimed from CN202211112824.9A external-priority patent/CN115603002A/zh
Priority claimed from CN202211112800.3A external-priority patent/CN116130892A/zh
Priority claimed from CN202211112820.0A external-priority patent/CN115603008A/zh
Priority claimed from CN202223068408.1U external-priority patent/CN219144404U/zh
Application filed by D Aus Energy Storage Technology Xian Co Ltd filed Critical D Aus Energy Storage Technology Xian Co Ltd
Priority to EP23864535.2A priority Critical patent/EP4589758A1/en
Priority to US19/112,059 priority patent/US20260018756A1/en
Priority to AU2023340203A priority patent/AU2023340203A1/en
Publication of WO2024055802A1 publication Critical patent/WO2024055802A1/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
    • H01M50/204—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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape 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
    • H01M50/209—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
    • H01M50/50—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
    • H01M50/507—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
    • H01M50/517—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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 pole, an upper cover assembly, an electrical adapter, a single cell and a battery pack.
  • the power of the power battery industry or energy storage system ranges from hundreds of watt hours to thousands of watt hours, and large energy storage systems can even reach megawatt hours.
  • the battery capacity continues to increase, and the corresponding battery loop current is also getting larger and larger.
  • the pole of the battery is the main part of the battery that generates heat.
  • the current method of dissipating heat for the battery mainly focuses on installing a heat dissipation device for the battery case, while ignoring the heat dissipation capacity and needs of the pole itself.
  • the patent with publication number CN114865151A introduces a high heat dissipation battery pack that utilizes aerodynamic energy.
  • the high heat dissipation battery pack includes an integrated housing, a sealed top cover, two electrode columns and multiple heat dissipation pipes.
  • the integrated housing has There are multiple battery chambers inside, and the interior of the battery chambers are equipped with electrode plate groups; the sealing top cover is fixed on the upper end of the integrated housing; the two electrode posts are fixed on the upper end of the sealing top cover, and the The electrode column and the electrode plate group are connected; a plurality of the heat dissipation tubes are fixed inside the integrated housing, and both ends of the heat dissipation tubes extend to the outside of the integrated housing.
  • This solution places the heat pipe inside the battery case and improves the heat dissipation design of the battery case.
  • the problem of easy heating of the poles is still not solved, and the temperature control of the battery cannot be effectively controlled.
  • this application provides a pole post, an upper cover assembly, an electrical adapter, a single cell, and a battery pack.
  • the present application provides a pole, which is arranged on the cover plate of a square shell battery.
  • the pole is a columnar body.
  • the columnar body includes a side wall, a first end surface and a second end surface.
  • the side wall or the first end surface At least one through-slot is provided on the first end surface for installing the heat transfer tube, and the first end surface is also provided with an electrical connection area.
  • the second end surface of the pole is provided with a conductive connection portion to electrically connect with the electrode assembly in the square shell battery.
  • the conductive connection part is welded or snap-connected to the pole.
  • the height of the pole is 20 mm to 25 mm.
  • the distance between the lowest point of the through groove and the second end surface is 7 to 12 mm.
  • the ratio of the diameter of the heat transfer tube to the widest part of the slot is 1:1.05 ⁇ 1:1.1.
  • the through groove divides the first end surface into a first area and a second area, the first area is the electrical connection area, and the area ratio of the first area to the first end surface is Not less than 50%.
  • the cross section of the through groove is C-shaped or U-shaped, and the depth of the through groove is smaller than the diameter of the heat transfer tube.
  • an insulating layer is provided on the surface of the through groove.
  • the present application provides an upper cover assembly, which includes a cover plate and two poles as described in any one of the above, and the poles are insulated on the cover plate.
  • the through groove extends along the width direction of the cover plate, and the ratio of the length of the through groove to the width of the cover plate is 0.7:1 ⁇ 0.9:1.
  • the present application provides a single cell, including the upper cover assembly described in any one of the above.
  • the present application provides an electrical adapter, which is arranged on the pole of a square shell battery.
  • the electrical adapter is a columnar body, and the columnar body includes a side wall, a first end face and a second end face. At least one through-slot is provided on the side wall or the first end face to install the heat transfer tube.
  • cross section of the through groove is C-shaped or U-shaped.
  • an insulating layer is provided on the surface of the through groove.
  • the distance between the lowest point of the through groove and the second end surface is 2 to 4 mm.
  • the ratio of the diameter of the heat transfer tube to the widest part of the through groove is 1:1.05 ⁇ 1:1.1.
  • the height of the electrical adapter is 11 mm to 18 mm.
  • the electrical adapter is provided with a fixing hole or a fixing groove at the lowest part of the through slot to fix the electrical adapter on the pole.
  • the electrical adapter is also provided with a welding groove and a relief groove, the welding groove extends axially along the lowest part of the through groove, and the relief groove is along the circumferential direction of the fixing hole or the fixing groove. set up.
  • the electrical adapter is further provided with an extension area extending horizontally along the second end surface.
  • the present application provides a single battery, including a pole, on which any one of the electrical adapters described above is fixed.
  • the second end surface at least covers the pole, the electrical adapter and the pole are fixed by welding or screwing, and the through groove extends along the thickness direction of the single cell. .
  • the present application provides a battery pack, which includes a plurality of single cells as described in any one of the above, and also includes a heat transfer tube.
  • the heat transfer tube is fixedly arranged on the through slot.
  • the heat transfer tube is a heat pipe or a liquid. Cold pipe.
  • the present application provides an electrical adapter for a single battery with a plurality of soft-packed cells.
  • the electrical adapter includes a base and a through slot.
  • the base includes a first electrical connection area and a third Two electrical connection areas, the through slot is provided on the first electrical connection area, the through slot is used to fix the heat transfer tube, and the first electrical connection area is used to electrically connect with the tabs of the soft-packed battery core , the second electrical connection area is used to electrically connect with the plates of the battery pack.
  • the through groove is protruding on the first electrical connection area, and the tabs of the soft-packed battery core are fixed on a side facing away from the through groove.
  • the through groove includes a pair of latching teeth, an opening is provided between the latching teeth, and the cross section of the through groove is C-shaped.
  • the latch is provided with a platform at the opening, so that the cross section of the through groove is ⁇ -shaped.
  • the through groove includes a pair of clamping pieces, one end of the clamping piece close to the base is a clamping area, and the clamping piece is away from One end of the base is a locking area, the clamping area is used to clamp the heat transfer tube, and the locking area is used to lock and fix the clamping piece.
  • an insulating layer is provided in the through groove.
  • the present application provides a single battery.
  • the single battery includes a plurality of soft-packed battery cores. Each tab of each soft-packed battery core is electrically connected to a battery according to any one of the above. Sex adapter.
  • the present application provides a battery pack.
  • the battery pack includes a plurality of the above-mentioned single cells, and also includes a temperature control component, a positive plate and a negative plate.
  • the tabs are connected to the first electrical connector of the electrical adapter.
  • the connection area is electrically connected;
  • the temperature control component includes a heat transfer tube, and the heat transfer tube is fixed on the through slot;
  • the positive plate and the negative plate are fixedly arranged on both sides of the battery pack, and the electrical switch
  • the second electrical connection area of the connector is electrically connected to the positive plate or the negative plate, and the heat transfer tube is a heat pipe or a liquid cooling tube.
  • the present application provides an electrical adapter, including a conductive block; the top of the conductive block is provided with at least one through slot, the through slot is used to install a heat transfer tube, the heat transfer tube is a heat pipe, and the conductive block is A slot is provided on the top or side of the block, and the slot is used to install the explosion vent plate.
  • the bottom end of the conductive block is provided with a pole mounting groove, the pole mounting groove is used to cooperate with the pole of the square shell battery, and the top end of the conductive block is also provided with a welding groove, and the welding groove is Used for welding with the poles of square case batteries.
  • the through groove is an arc-shaped groove or an arcuate groove, which is used to achieve close contact between the conductive block and the heat pipe.
  • a mounting block is provided at one end of the conductive block away from the slot, and the mounting block is used to facilitate the electrical connection of the conductive block.
  • the application provides an upper cover assembly, which includes a cover plate, a positive electrode column and a negative electrode column.
  • the cover plate is provided with an explosion vent, and an explosion vent film is provided in the explosion vent. It also includes 2 of any of the above items.
  • the above-mentioned electrical adapter is provided integrally with the positive pole and the negative pole respectively.
  • This application provides a battery pack, including an explosion vent plate, two conductive plates, N square-shell batteries and 2N electrical adapters as described in any one of the above, where N is an integer greater than or equal to 2; N square-shell batteries
  • the shell batteries are arranged in sequence, and the positive pole of the square shell battery is located on the first side of the square shell battery, and the negative pole is located on the second side of the square shell battery; N conductive blocks are arranged on the first side of the N square shell batteries in sequence.
  • the conductive blocks are electrically connected to the positive poles of the square-shell batteries respectively, and the other N conductive blocks are arranged on the second sides of the N square-shell batteries in turn, and the conductive blocks are electrically connected to the negative poles of the square-shell batteries respectively;
  • 2 conductive plates Electrically connected to the N conductive blocks on the first and second sides of the square-shell battery respectively, so that the N square-shell batteries are connected in parallel through the two conductive plates;
  • the slots of the N conductive blocks are connected in sequence, and at least one heat pipe is provided ;
  • the explosion vent plate is inserted into the slots of 2N conductive blocks, forming an explosion vent channel with the side walls of the conductive blocks and the cover plate of the square case battery, and the explosion vent channel is connected with the explosion vent of the square case battery.
  • the conductive block is electrically connected to the positive pole and the negative pole of the square shell battery through welding, and the conductive plate is electrically connected to the conductive block or the mounting block through bolts.
  • This application provides a battery pack, including an explosion vent plate, N-1 conductive plates, N square-shell batteries and 2N electrical adapters as described above, where N is an integer greater than or equal to 2; multiple The square-shell batteries are arranged in order, and the positive pole of the i-th square-shell battery is on the first side and the negative pole is on the second side. The negative pole of the i+1-th square-shell battery is on the first side and the positive pole is on the second side. side, i is a positive integer less than N; N conductive blocks The conductive blocks are arranged on the first side of the N square-shell batteries in sequence, and the conductive blocks are electrically connected to the positive poles or negative poles of the square-shell batteries.
  • the other N conductive blocks are arranged on the second sides of the N square-shell batteries in sequence, and are conductive
  • the blocks are electrically connected to the negative pole or positive pole of the square-shell battery respectively; the contact surfaces of adjacent conductive blocks are insulated, and N-1 conductive plates are used between the 2N conductive blocks to enable N square-shell batteries to be connected in series; N
  • the slots of the conductive blocks are connected in sequence and are provided with at least one heat pipe.
  • the outer wall of the heat pipe is provided with an insulating layer; the explosion venting plate is inserted into the slots of the 2N conductive blocks and is connected with the side walls and squares of the conductive blocks.
  • the cover plate of the shell battery forms an explosion vent channel, and the explosion vent channel is connected with the explosion vent of the square shell battery.
  • the explosion venting plate is a U-shaped explosion venting plate or a flat explosion venting plate.
  • the side walls of the U-shaped explosion venting plate are respectively embedded in the top slots of the first and second side conductive blocks to form explosion venting.
  • channel, or the flat-type explosion relief plates are respectively embedded in the side wall slots of the first and second side conductive blocks to form an explosion relief channel.
  • the conductive blocks and the positive and negative poles of the square shell battery are welded to achieve electrical conductivity. Connection, the conductive plate and the conductive block or the installation block are electrically connected through bolts.
  • the present application provides an electrical adapter, which includes a bus plate and a pole; the bus board is provided with a plurality of first slots for passing the pole tabs of each soft-packed cell in the battery pack. And after contacting the bus plate, it is electrically connected; the pole is arranged on the end face of the bus plate (the end face is the surface of the bus plate away from the battery pack), and is integrated with the bus plate. Due to the above-mentioned electrical adapter The bus plate and the pole are an integrated structure, so that multiple soft-packed cells can be connected in parallel through one component, which solves the problems of low reliability and high contact resistance when existing battery packs are connected in parallel through multiple components. At the same time, a through-slot is provided on the above-mentioned pole.
  • the through-slot can be located on the side or top surface of the pole, and its penetration direction is parallel to the direction in which the plurality of first slots are arranged.
  • a heat transfer tube can be provided in the through-slot. (The heat transfer tube is a heat pipe or a liquid cooling tube). The heat generated by the battery pack and the manifold is promptly transferred to the heat transfer tube in the slot through the pole, and is exported through the heat pipe to avoid the concentration of heat in the battery and the softness of the soft tube. The temperature of the soft-packed battery core is too high, which affects the normal operation of the soft-packed battery core.
  • the above-mentioned first slot is an open slot, that is, one side of the first slot passes through the bus plate, so that when the tab is installed, it can be inserted from one side of the bus board.
  • the side Insertion is more convenient and faster, improving installation and removal efficiency.
  • first slots are arranged in parallel in the first area of the busbar, and the poles are arranged in the second area of the busbar.
  • the first area and the second area are two areas distributed along the length direction of the busboard.
  • the first area and the second area are two areas distributed along the width direction of the bus plate. Partitioning the first slots and poles not only allows the busbar to have more first slots in a limited area, but also enables more soft-packed cells to be connected in parallel to meet the demand for increasing battery capacity. At the same time, it can also achieve the purpose of saving space, and at the same time, it can also efficiently transfer the heat generated by the battery pack and the manifold to the pole for centralized processing.
  • This application also provides an upper cover assembly, including a cover plate and two electrical adapters for a battery pack; at least two through holes are provided on the cover; and the poles of the electrical adapters are The post passes through the through hole, and the cover plate and the electrical adapter are insulated.
  • the above-mentioned upper cover assembly also includes an insulating support disposed between the bus plate and the battery pack.
  • the insulating support is provided with a plurality of second plugs for the tabs of each soft-packed cell in the battery pack to pass through. groove.
  • This insulating support can reliably support the electrical connection between the tabs and the bus plate, prevent the bus plate from contacting the soft-packed battery core shell, and further restrict the movement and deformation of the tabs, thereby avoiding the risk of damage due to vibration and deformation.
  • the pole lug welding is cracked and desoldered.
  • an insulating splint is provided between the cover plate and the bus plate, a positioning post is provided on the insulating plywood, a positioning hole is provided on the insulating support that matches the positioning post, and the insulating support and the insulating splint pass through the positioning post. Cooperating with the positioning holes makes the assembly of the entire cover more accurate and reliable.
  • a sealing rubber ring is provided in the through hole of the cover plate for sealing the connection between the pole and the cover plate.
  • the pole is also equipped with a welding ring on the outside of the cover plate.
  • the welding ring is welded to the pole and at the same time, the sealing rubber ring is pressed.
  • This application also provides a battery pack, including a plurality of soft-packed battery cells and the above-mentioned upper cover assembly.
  • the positive and negative electrode lugs of the soft-packed battery cells pass through the first slots of the two busbars respectively and then are bent, and Solder with manifold.
  • an electrical adapter with a through slot is provided on the pole, and a heat transfer tube is placed in the slot, so that the temperature of the pole and the battery can be effectively controlled after being transmitted through the heat transfer tube, and further
  • An electrical connection area is provided on the first end face or the extension area of the electrical adapter, so that the series or parallel connection of multiple single cells can be realized by installing the pole plates of the battery pack on the electrical connection area. It has a simple structure, strong practicability and easy operation, can balance the heat of the battery pack, has good heat transfer and heat dissipation effect, and has low cost.
  • an electrical adapter with a through slot and a base is provided, and a first electrical connection area and a second electrical connection area are provided on the base, so that the busbar can be connected to soft-packed batteries at the same time
  • the pole tabs and the pole plates of the battery pack are provided with a through slot on the first electrical connection area.
  • the first electrical connection area is directly fixed with the pole tabs of the battery core, so that the heat emitted by the pole tabs is directly transferred to the heat pipe on the through slot.
  • the heat pipe further transfers the heat to an external temperature control device to balance and control the heat of the battery pack.
  • the device has a simple structure, good heat dissipation effect and low cost.
  • the electrical adapter of this application includes a conductive block; the top of the conductive block is provided with at least one through slot, which is used to install the heat pipe; the top or side of the conductive block is provided with a slot, which is used to install the explosion vent plate .
  • the electrical adapter has a simple structure, and multiple square-shell batteries can be connected in series or in parallel by simply setting the electrical adapter. At the same time, during the charging and discharging process of the square-shell battery, the temperature at the pole connection is the highest. Based on this, a through slot is set on the conductive block.
  • the heat pipe can be installed in the slot, which can take away the heat from the battery pole and reduce the temperature of the battery. Within the optimal range.
  • the electrical adapter is also provided with a slot, which can form an explosion vent channel with the explosion vent plate to achieve directional discharge of thermal runaway smoke.
  • the above structure enables the electrical adapter to have multiple functions such as conduction, heat transfer and directional smoke exhaust, making it more widely used.
  • the bus plate and the pole in the electrical adapter of this application are integrated, so that multiple soft-packed cells can achieve the convergence and extraction of current through one electrical adapter.
  • This method not only improves the efficiency of multiple
  • the reliability of the electrical connection of soft-packed cells also reduces the risk of electrical connection of multiple components.
  • the contact resistance improves the performance of the battery; in addition, the electrical connection is achieved through an electrical adapter, which also reduces the installation components of the battery pack and simplifies the installation process.
  • a through-slot is provided on the above-mentioned pole.
  • the through-slot can be located on the side or top surface of the pole, and its penetration direction is parallel to the direction in which the plurality of first slots are arranged.
  • a heat transfer tube can be provided in the through-slot.
  • the heat transfer tube is a heat pipe or a liquid cooling tube.
  • the heat generated by the battery pack and the manifold is promptly transferred to the heat transfer tube in the slot through the pole, and is exported through the heat pipe to avoid the concentration of heat in the battery and the softness of the soft tube.
  • the temperature of the soft-packed battery core is too high, which affects the normal operation of the soft-packed battery core.
  • Figure 1 is a schematic structural diagram of the pole in Embodiment 1;
  • Figure 2 is a schematic structural diagram of various poles and conductive connections after being fixed in Embodiment 1;
  • Figure 3 is a schematic diagram of the size definition of the pole in Embodiment 1;
  • Figure 4 is a schematic structural diagram of the upper cover assembly in Embodiment 2.
  • Figure 5 is a schematic diagram of the size definition of the upper cover assembly in Embodiment 2;
  • Figure 6 is a schematic structural diagram of a single cell in Embodiment 3.
  • FIG. 7 is a schematic structural diagram of the battery pack in Embodiment 4.
  • Figure 8 is a schematic structural diagram of the electrical adapter and the battery pole assembled in Embodiment 5;
  • Figure 9 is a schematic structural diagram of various electrical adapters in Embodiment 5.
  • Figure 10 is a schematic diagram of the size definition of the electrical adapter in Embodiment 5.
  • Figure 11 is a schematic structural diagram of the electrical adapter and its extension area in Embodiment 5;
  • Figure 12 is a top view of the electrical adapter and its extension area in Embodiment 5;
  • Figure 13 is a schematic diagram 2 of the structure of the electrical adapter and its extension area in Embodiment 5;
  • Figure 14 is a schematic structural diagram of the upper cover assembly in Embodiment 6;
  • Figure 15 is a schematic diagram of the size definition of the upper cover assembly in Embodiment 7;
  • Figure 16 is a schematic structural diagram of a single cell in Example 7.
  • FIG 17 is a schematic structural diagram of the battery pack in Embodiment 8.
  • Figure 18 is a schematic structural diagram of the electrical adapter in Embodiment 9;
  • Figure 19 is a schematic structural diagram of the electrical adapter in Embodiment 9;
  • Figure 20 is a schematic structural diagram of the electrical adapter in Embodiment 9;
  • Figure 21 is a schematic structural diagram of the electrical adapter in Embodiment 10.
  • Figure 22 is a schematic structural diagram of the electrical adapter in Embodiment 10.
  • Figure 23 is a schematic structural diagram of a single cell in Embodiment 11.
  • Figure 24 is a schematic structural diagram of a single cell in Embodiment 11;
  • Figure 25 is a schematic structural diagram of the battery pack in Embodiment 12.
  • Figure 26 is a schematic structural diagram of the battery pack in Embodiment 12.
  • Figure 27 is a schematic structural diagram of the electrical adapter in Embodiment 13 of the present application.
  • Figure 28 is a schematic structural diagram 2 of the electrical adapter in Embodiment 13 of the present application.
  • Figure 29 is a schematic diagram three of the structure of the electrical adapter in Embodiment 13 of the present application.
  • Figure 30 is a schematic diagram 4 of the structure of the electrical adapter in Embodiment 13 of the present application.
  • Figure 31 is a schematic structural diagram of an existing square case battery
  • Figure 32 is a schematic structural diagram of the upper cover assembly in Embodiment 14 of the present application.
  • Figure 33 is a schematic structural diagram of the battery pack in Embodiment 15 of the present application.
  • Figure 34 is a schematic structural diagram 2 of the battery pack in Embodiment 15 of the present application.
  • Figure 35 is a schematic structural diagram of the battery pack in Embodiment 16 of the present application.
  • Figure 36 is a schematic structural diagram of the electrical adapter in Embodiment 17 of the present application.
  • Figure 37 is a schematic structural diagram of the electrical adapter in Embodiment 18 of the present application.
  • Figure 38 is a schematic structural diagram of the upper cover assembly in Embodiment 19 of the present application.
  • Figure 39 is a schematic structural diagram of the battery pack in Embodiment 20 of the present application.
  • Figure 40 is a schematic diagram 2 of the structure of the battery pack in Embodiment 20 of the present application.
  • FIG. 1 it is a schematic structural diagram of a pole provided in this embodiment.
  • the pole 11 in this embodiment is a columnar body, and the columnar body includes a first end surface 111, a second end surface 112 and a side wall 113.
  • At least one through-slot 12 is provided on one end surface 111 or side wall 113 for installing the heat transfer tube, that is, the opening of the through-slot 12 is located on the first end surface 111 or side wall 113 .
  • the first end surface 111 is provided with an electrical connection area, and the second end surface 112 is used to provide a conductive connection portion to electrically connect with the electrode assembly in the battery case.
  • FIG. 2 it is a schematic structural diagram of the poles of various structures connected to the conductive connection parts in this embodiment.
  • the height of the pole is h1
  • the distance from the lowest part of the slot to the second end face 112 is h2
  • the widest part of the slot is h3
  • the depth of the slot is h4.
  • the cross section of the through groove 12 is C-shaped or U-shaped.
  • it is a C-shaped through groove with a cross-section, and its opening width is smaller than the widest part h3 of the through groove. This design is conducive to transmission.
  • the heat pipe is interference-fitted in the through slot 12.
  • the curvature formed by the two ends of the C-shaped slot has natural tension, which is conducive to tightly clamping the heat transfer pipe in the through slot.
  • it is a U-shaped through slot. Its opening width is slightly smaller than the widest part h3 of the through slot, which is convenient for placing heat transfer tubes and can provide sufficient operating space. Use special tooling to flatten the heat transfer tube or fit the heat transfer tube more closely to the slot.
  • the conductive connection part 13 is specifically a conductive connection piece with a thickness of 2-3 mm and a rectangular shape. Different shapes can also be provided according to different needs.
  • the conductive connection parts of the positive pole and the negative pole are made of different materials.
  • the positive pole is made of aluminum sheet
  • the negative pole is made of copper sheet. If the pole is made of aluminum, the conductive connection part 13 and the positive pole can be integrally formed with the negative pole.
  • the poles are fixed by welding or clamping, and the specific fixing methods vary according to the materials selected for the poles or conductive connecting pieces. It is also possible to add a layer of copper sheet as the conductive connecting piece of the negative electrode post to the integrally formed pole and conductive connecting piece made of aluminum.
  • the through slot 12 can be placed on the first end face 111 of the pole. At this time, the first end face 111 except for the vacancy at the opening of the through slot is entirely used as an electrical connection area. , used to connect the plates. As shown in a, c, f and m in Figure 2, the through slot 12 can be placed on the side wall 113 of the pole. At this time, the entire first end surface 111 is used as an electrical connection area to connect the pole plates.
  • two through slots can be set on opposite sides of the pole at the same time to increase the number of heat transfer tubes and improve the heat transfer of the pole. Thermal efficiency.
  • the through slot 12 is set eccentrically. As shown in r in Figure 2, the through groove 12 divides the first end surface into a first area 1111 and a second area 1112.
  • the first area 1111 is an electrical connection area, and the area of the first area 1111 accounts for a small proportion of the first end surface. Below 50%.
  • Such a design can effectively increase the area of the electrical connection area and improve the current carrying area.
  • the area of the first end face includes part of the area missing due to the opening of the through slot, that is, the area of the first end face is equal to the area of the second end face.
  • the horizontal section of the pole 11 can be circular, rectangular, or racetrack-shaped. Different shapes of poles are selected according to different battery models, or other different shapes. The examples are not exhaustive.
  • the second end face 112 of the pole is close to the electrode assembly, so the second end face 112 is closer to the internal electrode assembly of the battery, and the heat transfer tube should be placed as close to the second end face 112 as possible.
  • the height h1 of the pole in this embodiment is 20mm-25mm, and the distance h2 between the lowest part of the slot and the second end face 112 of the pole is 7-12mm, like this The setting enables the heat transfer tube to be as close as possible to the inside of the battery for heat transfer. When the diameter of the heat transfer tube is too smaller than the through slot, the contact will not be tight.
  • the ratio of the diameter of the heat transfer tube to the widest point h3 of the through slot is 1: 1.05-1:1.1.
  • the diameter of the heat transfer tube is ⁇ 10, its diameter size is 10mm, and the widest part h3 of the slot is 10.5mm-11mm, so that the heat transfer tube can be easily placed in the barrel groove, and then pressed and tightly Fitted to the slot to improve heat transfer efficiency.
  • the depth h4 of the groove is smaller than the diameter of the heat transfer tube, so that the heat transfer tube slightly protrudes from the surface of the pole, which is beneficial to compressing the heat transfer tube. Level it so that it is in close contact with the channel.
  • the surface of the through slot 12 is provided with an insulating layer, which can be coated with an insulating material or attached with a silicone layer, a rubber layer, etc., or an insulating layer can be provided on the heat transfer tube so that the metal heat transfer tube is in contact with the pole. Post insulation installation.
  • a through slot is provided on the pole to place a heat transfer tube in the slot, so that the temperature inside the pole and the battery can be effectively controlled, and an electrical connection area is further provided on the first end face of the pole to make it
  • the electrode plates can be installed on the electrical connection area to realize the series or parallel connection of multiple single cells.
  • the upper cover assembly includes a cover 141, a first insulator 142, a second insulator 143 and two poles 11, namely the positive pole and the negative pole.
  • the first insulator 142 is placed on the cover 141, and the second insulator 143 is placed on the cover 141.
  • 143 is placed under the cover 141, and the pole 11 passes through the second insulating member 143, the cover 141, and the first insulating member 142 in sequence and is then fixed on the cover 141 to place the heat pipe in the slot of the pole.
  • the cover 141 is also provided with an explosion vent 145 and a liquid injection port 146.
  • the pole 11 in this embodiment is a columnar body.
  • the columnar body includes a first end surface 111, a second end surface 112 and a side wall 113. At least one through groove is provided on the first end surface 111 or the side wall 113. 12, to install the heat transfer tube, that is, the opening of the through groove 12 is located on the first end surface 111 or the side wall 113.
  • the first end surface 111 is provided with an electrical connection area
  • the second end surface 112 is used to provide a conductive connection portion to electrically connect with the electrode assembly in the battery case.
  • FIG. 2 it is a structural schematic diagram of the poles of various structures connected to the conductive connection parts in this embodiment. The specific structure of the poles and the specific limitations of the through slots are detailed in Embodiment 1.
  • the ratio of the length h5 of the through slot to the width h6 of the cover plate is 0.7:1-0.9:1.
  • the width direction of the cover plate 141 is the extension direction of the through slot 12, which is advantageous for fixing a heat transfer tube to a group of poles 11 when multiple single cells are connected in parallel.
  • the ratio of the length of the through slot 12 to the width of the cover plate is 0.7:1-0.9:1, which is beneficial to increasing the contact area between the heat transfer tube and the through slot 12 and strengthening the Heat transfer effect.
  • FIG. 6 it is a schematic structural diagram of a single battery, including the upper cover assembly 1101 described in Embodiment 2, the battery barrel 1102 and the electrode assembly (not shown in the figure).
  • FIG. 7 it is a schematic structural diagram of a battery pack, including several single cells 110 described in Embodiment 3, a positive plate 151 and a negative plate 152 fixed on the pole 11, and also includes a battery pack fixed on the pole 11.
  • the battery packs can also be connected in series, but the positive and negative plates need to be modified accordingly so that the single cells are connected in series and the grooves or heat transfer tubes are insulated.
  • the heat transfer pipe 16 in this embodiment is a heat pipe or a liquid cooling pipe.
  • a temperature control component is added to the battery pack so that the heat of the heat pipe is conducted to the temperature control component.
  • When using liquid cooling tubes add an external chiller and use the chiller to control the temperature of the battery pack.
  • the part marked h2 is the combined plastic sealing area between the pole and the cover plate
  • the part marked h4 is the placement position of the heat transfer tube.
  • the temperature of the pole is no higher than 34°C, and the temperature measured on the surface of the battery case is also around 36°C.
  • the overall temperature control is compared to that without using the pole of this application.
  • the temperature of the poles is reduced by at least 18.9%, and the surface temperature of the battery case is reduced by at least 4.7%. This effectively reduces the overall temperature of the battery, significantly reduces the temperature of the poles, and improves safety performance. Big improvement.
  • the ratio of the length h5 of the slot to the width h6 of the cover has a great influence on the temperature of the battery pole.
  • h2 When fixed at 7mm, the larger the fitting area between the heat transfer tube and the pole, the better the heat transfer and heat dissipation effect, but the maximum length cannot exceed the width of the cover plate.
  • the surface temperature of the poles After testing the temperature of the poles of through-slots of different lengths when charging and discharging the battery at 1C, compared with the poles of conventional batteries on the market that do not use the poles of this application, it can be seen that the surface temperature of the poles has decreased by at least 20.2%. The pole temperature is significantly reduced, and the safety performance is greatly improved.
  • the ratio of the length h5 of the slot to the width h6 of the cover plate is preferably 0.7:1 to 0.9:1, which has a good cooling effect and is energy-saving and environmentally friendly.
  • FIG. 8 it is a schematic structural diagram of an electrical adapter provided in this embodiment after being assembled with a battery pole.
  • the electrical adapter 21 in this embodiment is a columnar body.
  • the columnar body includes a first end surface 211, a second end surface 212 and a side wall 213. At least one through groove 22 is provided on the first end surface 211 or the side wall 213.
  • the heat transfer tube is installed such that the opening of the through groove 22 is located on the first end face 211 or the side wall 213 .
  • the second end surface 212 is used for fixed connection with the pole 210.
  • the pole 210 is also provided with a conductive connection portion 2101 for electrical connection with the electrode assembly in the battery case.
  • FIG. 9 it is a schematic structural diagram of the electrical adapter 21 of various structures in this embodiment.
  • the height of the electrical adapter is h1
  • the distance from the lowest part of the through slot 22 to the second end face 212 is h2
  • the widest part of the through slot is h3
  • the depth of the through slot is h4.
  • the cross section of the through groove 22 is C-shaped or U-shaped.
  • the cross-section is a C-shaped through groove, and its opening width is smaller than the widest part h3 of the through groove, which is conducive to the interference of the heat transfer tube in the through groove 22 inside, and the curvature formed by the C-shaped slot at both ends of the opening has natural tension, which is conducive to tightly clamping the heat transfer tube in the slot.
  • the opening of the U-shaped slot is slightly smaller than the widest point h3, which is convenient for placing the heat transfer tube and can provide enough operating space for special tooling to level the heat transfer tube or move the heat transfer tube.
  • the heat pipe is snap-fitted with the through-slot to make it fit tightly.
  • the depth h4 of the C-shaped channel and the U-shaped channel are different and can be selected or adjusted according to actual needs.
  • the through slot 22 is placed on the first end face 211 of the pole. At this time, the first end face 211 except for the vacancy at the opening of the through slot is entirely used as an electrical connection area. , used to connect the plates. As shown in d and e in Figure 9 , the through slot 22 can be placed on the side wall 213 of the pole. At this time, the entire first end surface 211 is used as an electrical connection area to connect the pole plates. As shown in g and m in Figure 9, when the opening of the through slot 22 is located on the side wall 213, two through slots can be provided on opposite sides of the electrical adapter at the same time to increase the number of heat transfer tubes and improve the efficiency. The heat transfer efficiency of the column.
  • the through slot 22 is arranged eccentrically. As shown in c in Figure 9, the through groove 22 divides the first end surface into a first area 2111 and a second area 2112.
  • the first area 2111 is an electrical connection area, and the area of the first area 2111 accounts for a small proportion of the first end surface. Below 50%.
  • Such a design can effectively increase the area of the electrical connection area and improve the current carrying area.
  • the area of the first end face includes part of the area missing due to the opening of the through slot, that is, the area of the first end face is equal to the area of the second end face.
  • the horizontal section (cross section) of the electrical adapter 21 can be circular, rectangular or racetrack-shaped, and different shapes of electrical adapters are selected according to different battery models. , and can also be in other different shapes, which are not exhaustive in this embodiment.
  • the second end face 212 of the electrical connector is close to the electrode assembly, and the heat transfer tube should be placed as close to the second end face 212 as possible to improve heat transfer efficiency and reduce the internal temperature of the battery.
  • the height h1 of the electrical adapter in this embodiment is 11mm-18mm, and the distance h2 between the lowest point of the slot and the second end face 212 of the pole is 2-4mm. , such a setting can It is enough to make the heat transfer tube as close as possible to the highest temperature point of the pole for heat transfer. When the diameter of the heat transfer tube is too smaller than the through slot, the contact will not be tight.
  • the ratio of the diameter of the heat transfer tube to the widest point h3 of the through slot is 1:1.05. -1:1.1.
  • the diameter of the heat transfer tube is ⁇ 10, its diameter size is 10mm, and the widest part h3 of the slot is 10.5mm-11mm, so that the heat transfer tube can be easily placed in the slot, and then pressed to make it tight Fitted to the slot to improve heat transfer efficiency.
  • the depth h4 of the through groove is smaller than the diameter of the heat transfer tube, so that the heat transfer tube slightly protrudes from the surface of the pole, which is beneficial to leveling the heat transfer tube so that it is consistent with the surface of the pole.
  • the slots are in close contact.
  • an insulating layer is provided on the surface of the slot, which can be coated with an insulating material or a silicone layer, a rubber layer, etc., or an insulating layer can be provided on the heat transfer tube to make the metal heat transfer tube electrically insulated.
  • the adapter is insulated and installed so that the battery packs can use the electrical adapter of this application when they are connected in series.
  • a fixing hole 221 is provided at the bottom of the through slot of the electrical connector, and the electrical connection is connected through the fixing hole 221.
  • the parts are fixed to the battery poles. Specifically, they can be fixed using screw connection technology.
  • the fixing hole can also be a fixing groove, which is fixed by welding.
  • a welding groove 222 and a relief groove 223 are provided in the through groove.
  • the welding groove 222 extends radially along the bottom of the through groove, and the relief groove 223 extends along the periphery of the fixing hole 221.
  • the welding groove 222 is arranged so that the overflowing solder after welding can be filled into the welding groove without affecting the flatness of the clamping surface between the heat transfer tube and the through groove, ensuring the tightness between the heat transfer tube and the inner wall of the through groove. touch.
  • the setting of the relief groove 223 allows space for the nut to be accommodated when the bolt is connected to the electrical adapter and the pole.
  • An extension area 224 is also provided on the second end face 212 of the electrical adapter. After the single cells form a battery pack, the extension area 224 is fixedly connected to the plates of the battery pack to realize series or parallel connection between several batteries. . Specifically, the extension area 224 and the pole plate are connected by welding, riveting, bolting, etc. The extension area 224 can also be provided with a raised fixed edge 225 to adapt to different forms of assembly. The fixed edge 225 is used for electrical connection with the battery plate, and the two are connected by welding, riveting, bolting, etc.
  • a receiving groove 226 is provided on the side of the second end surface 212 facing the pole for snap-fitting with the battery pole.
  • the shape of the receiving groove 226 matches the contour of the pole, so that the pole is snapped into the receiving groove 226 .
  • FIG. 14 it is a schematic structural diagram of an upper cover assembly provided in this embodiment.
  • the upper cover assembly includes a cover plate 241, a first insulating member 242, a second insulating member 243, a positive pole 2441, and a negative pole 2442.
  • An insulating member 242 is placed on the cover 241, and a second insulating member 243 is placed under the cover 241.
  • the positive pole 2441 and the negative pole 2442 pass through the second insulating member 243, the cover 241, and the first insulating member 242 in sequence and then are fixed.
  • electrical adapters 21 are respectively fixed on the positive pole 2441 and the negative pole 2442 , so that the heat transfer tubes can be placed in the slots of the electrical adapter 21 .
  • the cover 241 is also provided with an explosion vent 245 and a liquid injection port 246.
  • FIG 15 it is a schematic diagram defining the dimensions of the upper cover assembly of the electrical adapter.
  • the length h5 of the slot 22 is not less than the pole
  • the width of the column is h6.
  • h7 is the width of the cover plate 241
  • the thickness of the cover plate 241 and the single cell are the same
  • the electrical adapter and the pole are fixed by welding or screwing
  • the through slot 22 extends along the thickness direction of the single cell, that is The through groove 22 extends along the extending direction of the cover plate h7 of the single cell.
  • an electrical adapter with a through slot is provided on the pole to place a heat transfer tube in the slot, so that the temperature of the pole can be effectively controlled after being transmitted through the heat transfer tube.
  • the structure is simple and practical. It is strong and easy to operate, can balance the heat of the battery pack, has good heat transfer and heat dissipation effect, and has low cost.
  • the single battery 200 includes the upper cover assembly 220 described in Embodiment 6, a battery cylinder and an electrode assembly placed in the battery cylinder (not shown in the figure).
  • an electrical adapter with a through slot is provided on the pole to place a heat transfer tube in the slot, so that the temperature of the pole can be effectively controlled after being transmitted through the heat transfer tube.
  • the structure is simple and practical. It is strong and easy to operate, can balance the heat of the battery pack, has good heat transfer and heat dissipation effect, and has low cost.
  • FIG. 17 it is a schematic structural diagram of a battery pack in this embodiment.
  • the battery pack includes several single cells 200 described in Embodiment 5, and the single cells 200 are connected in parallel.
  • the electrical adapter 21 is provided on both the positive pole and the negative pole of the single cell 200 .
  • the battery pack also includes a temperature control component 27, a positive plate 251 and a negative plate 252.
  • the positive plate 251 is electrically connected to the positive poles of all single cells
  • the negative plate 252 is electrically connected to the negative poles of all single cells.
  • the battery pack also includes two heat transfer tubes 26, which are respectively fixed on the electrical adapters 21 of the positive and negative poles of the battery pack.
  • the battery pack also includes a temperature control component 27 , which includes pipelines and external devices for exchanging heat with the heat transfer tube 26 .
  • the heat transfer tube 26 can be a heat pipe or a liquid cooling tube.
  • the temperature control component is a semiconductor refrigerator.
  • the temperature control component is a water cooler.
  • An electrical adapter with a through slot is provided on the pole to place a heat transfer tube in the slot so that the temperature of the pole can be effectively controlled after being transmitted through the heat transfer tube.
  • the electrical adapter is An electrical connection area is provided on the first end face, so that multiple single cells can be connected in series or in parallel by installing the plates of the battery pack on the electrical connection area.
  • the positive plates need to be aligned. Make corresponding improvements to the negative plate to form a series circuit between the single cells and insulate the grooves or heat transfer tubes.
  • the application has a simple structure, strong practicability, and easy operation, can balance the heat of the battery pack, has good heat transfer and heat dissipation effects, and has low cost.
  • the part with a height of h2 is the combined plastic sealing area between the electrical adapter and the pole
  • the part with a height of h4 is the placement position of the heat transfer tube.
  • the temperature of the pole is no higher than 34°C, and the temperature of the battery case surface is also below 35°C.
  • the overall temperature control is compared with that without using this method.
  • the temperature of the poles is reduced by at least 16.4%, and the surface temperature of the battery case is reduced by at least 16.8%, effectively reducing the overall temperature of the battery and the poles. temperature, safety performance has been greatly improved.
  • the second end surface covers the pole.
  • the ratio of the length h5 of the slot to the width h6 of the pole has a great influence on the temperature of the battery pole.
  • h2 is fixed at 3mm, The larger the joint area between the heat transfer tube and the pole, the better the heat transfer and heat dissipation effect, but the longest length cannot exceed the width of the cover plate.
  • the temperature of the poles of the through-slots of different lengths when the battery was charged and discharged at 1C was tested. Compared with the poles of conventional batteries on the market that do not use the electrical adapter and heat transfer tube of this application, the temperature of the poles was The temperature is reduced by at least 17.9%, which significantly reduces the temperature of the pole and greatly improves the safety performance.
  • FIG 18 and Figure 19 it is a schematic structural diagram of an electrical adapter.
  • the electrical adapter in this embodiment is applied to a single battery with several soft-packed cells built in.
  • the poles of the soft-packed cells are The lugs extend out of the single cell shell, and a plurality of pole lugs are connected to the electrical adapters one by one.
  • all the electrical adapters are electrically connected to the positive and negative plates of the battery pack. , to realize the series or parallel connection of several single cells.
  • the electrical adapter includes a base 31 and a through-slot 32.
  • the base includes a first electrical connection area 311 and a second electrical connection area 312.
  • the through-slot 32 is provided in the first electrical connection area. 311, the through groove 32 is used to fix the heat transfer tube, the first electrical connection area 311 is used to electrically connect with the tabs of the single cell, and the second electrical connection area 312 is used to electrically connect with the plates of the battery pack.
  • the through groove 32 is protruding on the first electrical connection area 311.
  • the length of the through groove 32 in the axial direction is close to or the same as the width of the base. After several tabs of the single battery are bent, their folded surfaces are fixed on the first electrical connection area 311.
  • the side of the electrical connection area 311 facing away from the slot can be fixed by welding.
  • the temperature of the tabs is the highest.
  • the length of the first electrical connection area of the base should be the same as the length of the tabs.
  • the through slot is a clamping slot
  • the clamping slot includes a pair of clamping teeth, and an opening is provided between the clamping teeth, so that the cross section of the through slot is C-shaped.
  • the heat transfer tube is inserted between the teeth through the opening and fixed.
  • the thickness is thicker at the connection between the latch teeth and the base, and gradually becomes thinner at the opening.
  • an insulating layer is provided on the inner wall of the slot for use in an insulating environment.
  • the latch 321 is provided with a platform 3211 at the opening.
  • the platform 3211 is turned outwards along the latch opening and protrudes from the edge of the latch.
  • the surface of the platform 3211 is in contact with the base. 31 is nearly parallel, making the cross section of the through slot ⁇ -shaped.
  • the stress plane of the heat transfer tube increases the stress area of the clamping teeth so that the clamping teeth are evenly stressed, ensuring that the clamping teeth will not deform or break due to excessive local pressure during the extrusion process, and at the same time ensuring that the heat transfer tube remains in place It is flattened and deformed to a certain extent, tightly fitting the inner wall of the channel.
  • the second electrical connection area 312 is fixedly connected to the plates of the battery pack to achieve series or parallel connection between several batteries. Specifically, the second electrical connection area 312 and the electrode plate are connected by welding, riveting, bolting, etc.
  • FIG 18 and Figure 19 it is a schematic structural diagram of an electrical adapter.
  • the electrical adapter in this embodiment is applied to a single battery with several soft-packed cells built in.
  • the poles of the soft-packed cells are The lugs extend out of the single cell shell, and a plurality of pole lugs are connected to the electrical adapters one by one.
  • all the electrical adapters are electrically connected to the positive and negative plates of the battery pack. , to realize the series or parallel connection of several single cells.
  • the electrical adapter includes a base 31 and a through-slot 32.
  • the base includes a first electrical connection area 311 and a second electrical connection area 312.
  • the through-slot 32 is provided on the first electrical connection area 311.
  • the through-slot 32 is used for fixation.
  • the first electrical connection area 311 is used for electrical connection with the tabs of the single cells
  • the second electrical connection area 312 is used for electrical connection with the plates of the battery pack composed of single cells.
  • the through groove 32 is protruding on the first electrical connection area 311.
  • the length of the through groove 32 in the axial direction is close to or the same as the width of the base. After several tabs of the single battery are bent, their folded surfaces are fixed on the first electrical connection area 311.
  • the side of the electrical connection area 311 facing away from the slot can be fixed by welding.
  • the temperature of the tabs is the highest. In order to improve the safety of the battery and extend the service life of the battery, it is very important to cool down the battery. Therefore, the length of the first electrical connection area of the base should be as consistent as possible with the tabs.
  • the heat of the tab is fully conducted to the electrical adapter, and the heat transfer tube is fully contacted with the electrical adapter to achieve the effect of using the heat transfer tube to cool the tab.
  • the device has a simple structure and a good cooling effect. .
  • an insulating layer is provided on the inner wall of the slot for use in an insulating environment.
  • the through slot 32 includes a pair of clamping pieces 322.
  • One end of the clamping piece 322 close to the base 31 is a clamping area 3221, and one end of the clamping piece 322 away from the base 31 is a locking area 3222.
  • the clamping area 3221 is used to clamp the heat transfer tube
  • the locking area 3222 is used to lock and fix the clamping piece.
  • the locking area of the clamping piece 322 is fixed by riveting.
  • the clamping pieces are fixed by riveting, which is beneficial to the close contact between the clamping pieces and the heat transfer tube. It is convenient to tightly fix the heat transfer tube and the through slot, so that the heat transfer effect of the heat transfer tube is better, and the operation is simple and efficient.
  • the single battery includes a battery case 320.
  • the battery case 320 has several soft-packed cells built in. Each tab of each soft-packed cell is
  • the electrical adapter 310 described in Embodiment 9 or 2 is fixedly provided on the upper body.
  • the battery case 320 is made of metal.
  • An insulating gasket 3201 is provided between the electrical adapter 310 and the battery case 320 to prevent electrical leakage. Electricity is conductive between the adapter and the battery case.
  • the battery pack includes a temperature control component, a positive plate and a negative plate.
  • the battery pack is composed of several single cells provided in Embodiment 11.
  • the tabs of the single cells and the electrical adapter are The first electrical connection area of 310 is electrically connected;
  • the temperature control component includes a number of heat transfer tubes, which are fixed on the slot;
  • the plate 301 is divided into a positive plate and a negative plate, and the positive plate and the negative plate are fixedly arranged on both sides of the battery pack.
  • the second electrical connection area of the electrical adapter is electrically connected to the positive plate or the negative plate respectively.
  • the heat transfer tube is a heat pipe or a liquid cooling tube.
  • the single cell includes an upper cover, a cylinder and a lower cover.
  • the electrode plate 301 is L-shaped, and the electrode plate is electrically connected on the parallel surface of the upper cover.
  • the adapter 310 is electrically connected, and the L-shaped pole plate is provided with a connecting portion on the parallel surface of the cylinder for connecting in series or parallel with adjacent batteries to form a battery pack.
  • the battery case is provided with a first installation position 3202 and a second installation position 3203.
  • the first installation position 3202 is protruding on both sides of the battery case 320 along the height direction of the battery case, and the second installation position 3203 is along the thickness of the case.
  • the direction is raised on the lower cover plate.
  • the battery pack includes a first mounting member 302.
  • the first mounting member 302 is L-shaped and includes two mutually perpendicular mounting surfaces. The parallel and vertical surfaces of the lower cover of the battery case fit and cover the lower part of the battery case.
  • the cover plate and the battery cylinder are fixedly installed on the first installation surface of the first installation member 302 and the first installation position 3202, and the second installation surface and the second installation position 3203 are fixedly installed.
  • the battery is provided with a second mounting part 303.
  • the second mounting part 303 extends along the direction of the battery stack and is fixed on the first mounting positions 3202 on both sides of the battery case.
  • the battery is also provided with a support member 304, which is fixedly provided on one side of the lower cover of the first battery housing and is used for installing the battery on the battery bracket.
  • the heat transfer tube is not provided with an insulating layer.
  • the heat transfer pipe is provided with an insulating layer, or in the slot. An insulating layer is provided to prevent the heat transfer tube from contacting the slot and conducting electricity.
  • the electrical adapter includes a conductive block 41; a pole mounting slot 411 is provided at the bottom of the conductive block 41.
  • the pole mounting slot 411 Used to cooperate with the poles 421 of the square shell battery 42, the top of the conductive block 41 is provided with at least one through slot 412, the through slot 412 is used to install a heat transfer pipe, the heat transfer pipe is a heat pipe 44, the top of the conductive block 41 or A slot 413 is provided on the side, and the slot 413 is used to install the explosion vent plate 45 .
  • the electrical adapter has a simple structure, and multiple square-shell batteries 42 can be connected in series or in parallel by simply setting the electrical adapter.
  • multiple square-shell batteries 42 can be connected in series or parallel. At the same time, during the charging and discharging process of the square-shell batteries 42, the temperature at the pole connection is the highest. Based on this, a pass is set on the conductive block 41. Slot 412, a heat pipe 44 can be installed in the through slot 412 to take away the heat from the battery pole 421, so that the temperature of the battery is within the optimal range.
  • the electrical adapter is also provided with a card slot 413, and the card slot 413 can An explosion vent channel 46 is formed with the explosion vent plate 45 to achieve directional discharge of thermal runaway smoke.
  • the above structure enables the electrical adapter to have multiple functions such as conduction, heat dissipation and smoke exhaust, and is more widely used.
  • a mounting block 414 can be provided on the side of the conductive block 41 away from the slot 413, and electrical connection between adjacent conductive blocks 41 can be achieved through the mounting block 414.
  • the mounting block 414 can also be provided with a mounting hole 415, and reliable electrical connection can be achieved by arranging bolts in the mounting hole 415.
  • the top of the above-mentioned conductive block 41 is also provided with a welding groove 416. The formation of the welding groove 416 allows the conductive block 41 to be electrically connected to the pole 421 of the square case battery through welding, with the wall thickness of the welding part reduced and the welding more reliable.
  • the above-mentioned through groove 412 may be an arc-shaped groove or an arcuate groove.
  • the arc-shaped groove or the arcuate groove can enable the heat pipe 44 to be embedded more closely when embedded in the through groove 412, so that the conductive block 41 is in close contact with the heat pipe 44, thereby achieving better implementation. Transfer heat and improve heat transfer effect.
  • the electrical adapter in this embodiment is a connector that facilitates the series-parallel connection of existing square-shell batteries.
  • the connector is an extruded piece and is fixed on the positive pole 4211 or the negative pole 4212 of the single square-shell battery. It can be welded Or it can be fixed by drilling screws, or it can be designed to be integrated with the cover plate 422 and the poles 421.
  • the heat pipe 44 can be inserted into the battery through the slot 412 on the electrical adapter.
  • the explosion vent plate 45 is embedded in the slot 413 of the electrical adapter, and forms an explosion vent channel 46 with the side wall and cover 422 of the electrical adapter.
  • the explosion vent channel 46 realizes the escape of thermal runaway smoke.
  • the explosion vent plate 45 is made of insulating materials, such as plastic, insulating rubber, etc.
  • colloid can be injected between multiple square case batteries 42 and solidified to form an overall pack with good heat dissipation.
  • the existing square-shell battery includes an upper cover assembly, a battery casing and an electrode assembly.
  • the electrode assembly is disposed in a closed cavity formed by the upper cover assembly and the battery casing.
  • the upper cover assembly provided in this embodiment includes a cover plate 422, a pole 421 and two electrical adapters.
  • the pole 421 includes a positive pole 4211 and a negative pole 4212.
  • the positive pole 4211 and the negative pole 4212 are arranged through the cover 422.
  • the cover 422 is provided with an explosion vent
  • an explosion vent 423 is provided in the explosion vent.
  • the bottom end of the conductive block 41 is provided with a pole mounting slot 411.
  • the pole mounting slot 411 is used to cooperate with the positive pole 4211 and the negative pole 4212 of the square case battery 42, so that the electrical adapter is respectively connected to the positive pole and the negative pole. All-in-one setup.
  • the top of the conductive block 41 is provided with at least one through slot 412.
  • the through slot 412 is used to install the heat pipe 44.
  • the top or side of the conductive block 41 is provided with a slot 413.
  • the slot 413 is used to install the explosion vent plate 45.
  • multiple square-shell batteries 42 can be connected in series or parallel.
  • a heat pipe 44 can be installed in the slot 412 to take away the heat from the battery poles 421 to keep the battery temperature within an optimal range.
  • the electrical adapter is also provided with a slot 413, which can form an explosion vent channel 46 with the explosion vent plate 45 to achieve directional discharge of thermal runaway smoke, so that the electrical adapter has It has multiple functions such as conduction, heat dissipation and smoke exhaust.
  • the battery pack is a battery pack formed by connecting multiple square-shell batteries in parallel.
  • the battery pack includes an explosion vent plate, 2 conductive plates, N square-shell batteries and 2N electrical adapters.
  • N is an integer greater than or equal to 2;
  • N square-shell batteries are arranged in sequence, and the positive pole of the square-shell battery is located on the first side of the square-shell battery, and the negative pole is located on the second side of the square-shell battery;
  • N conductive blocks are arranged in sequence On the first side of the N square-shell batteries, the pole mounting slots of the conductive blocks are embedded with the positive poles of the square-shell batteries, and the other N conductive blocks are sequentially arranged on the N square shells.
  • the pole mounting slots of the conductive blocks are embedded with the negative poles of the square case battery respectively; the two conductive plates are electrically connected to the N conductive blocks on the first and second sides of the square case battery, respectively.
  • N square-shell batteries are connected in parallel through two conductive plates; the slots of the N electrical adapters are connected in sequence, and at least one heat pipe is provided; the explosion vent plate is inserted into the slots of the 2N conductive blocks and connected with the conductive blocks
  • the side wall and the cover plate of the square case battery form an explosion vent channel, and the explosion vent channel is connected with the explosion vent of the square case battery.
  • the battery pack includes an explosion vent plate 45, two conductive plates 43, 10 square-shell batteries 42 and 20 electrical adapters.
  • the ten square case batteries 42 are arranged in sequence, and the positive pole 4211 of the square case battery 42 is located on the first side of the square case battery 42, and the negative pole 4212 is located on the second side of the square case battery 42; the ten conductive blocks 41 are arranged in sequence.
  • the pole mounting slots 411 of the conductive blocks 41 are respectively embedded with the positive poles 4211 of the square case batteries 42, and the other 10 conductive blocks 41 are sequentially arranged on the 10 square case batteries 42 on the second side, and the pole mounting slots 411 of the conductive block 41 are embedded with the negative poles 4212 of the square case battery 42 respectively.
  • the single conductive plate 43 is electrically connected to the 10 conductive blocks 41 on the first side, that is, the conductive block 41 connected to the positive pole is electrically connected, and the other conductive plate 43 is electrically connected to the 10 conductive blocks 41 on the second side.
  • the through slots 412 of the ten conductive blocks 41 on the first side of the square case battery 42 are connected in sequence, and the heat pipes 44 are embedded in the through slots 412.
  • the through slots 412 of the ten conductive blocks 41 on the second side of the square case battery 42 The slots 412 are connected in sequence, and a heat pipe 44 is embedded in the slot 412.
  • the heat pipe takes away the heat from the positive pole and the negative pole, so that the square case battery operates in a better temperature range.
  • 10 conductive blocks 41 are arranged on the first side of the 10 square case batteries 42 in sequence, and the other 10 conductive blocks 41 are arranged on the second side of the 10 square case batteries 42 in sequence. At this time, the 10 conductive blocks 41 are arranged on the first side of the 10 square case batteries 42.
  • the slots 413 of the conductive blocks 41 on one side and the second side are arranged oppositely.
  • the explosion vent plate 45 is inserted into the slots 413 of the 2N conductive blocks 41 to form a leakage vent with the side walls of the conductive blocks 41 and the cover of the square case battery 42.
  • Explosion channel 46, the above-mentioned explosion venting plate 45 is a U-shaped explosion venting plate or a flat type explosion venting plate.
  • the side walls of the U-shaped explosion venting plate are respectively embedded in the top slot 413 of the conductive block 41 to form an explosion venting channel 46, or a flat type explosion venting panel.
  • the explosion vent plates are respectively embedded in the side wall slots 413 of the conductive block 41 to form an explosion vent channel 46.
  • the explosion vent channel 46 is connected with the explosion vent of the square case battery 42. When the battery is thermally out of control, the thermal runaway smoke will escape from the square case battery 42. It is discharged from the explosion vent, and then directed to the outside of the battery through the explosion channel 46 to avoid secondary impact of thermal runaway smoke on the battery.
  • This application provides a battery pack, which is a battery pack formed by square-shell batteries connected in series, including an explosion vent plate, N-1 conductive plates, N square-shell batteries and 2N electrical adapters, where N is greater than An integer equal to 2; multiple square-shell batteries are arranged in sequence, and the positive pole of the i-th square-shell battery is located on the first side, the negative pole is located on the second side, and the negative pole of the i+1-th square-shell battery is located on the first side.
  • N conductive blocks are arranged on the first side of N square case batteries in sequence, and the pole installation slots of the conductive blocks are respectively embedded with the positive pole or negative pole of the square case battery, and the other N conductive blocks are arranged on the second side of N square-shell batteries in sequence, and the pole mounting slots of the conductive blocks are embedded with the negative poles or positive poles of the square-shell batteries respectively; the contact surfaces of adjacent conductive blocks are insulated. , and N-1 conductive plates are used between the 2N conductive blocks.
  • N square-shell batteries are connected in series; the slots of the N electrical adapters are connected in sequence, and at least one heat pipe is provided, and an insulation layer is provided on the outer wall of the heat pipe; the explosion venting plate is inserted into the slots of the 2N conductive blocks , forming an explosion vent channel with the side wall of the conductive block and the cover plate of the square case battery, and the explosion vent channel is connected with the explosion vent of the square case battery.
  • the battery pack includes an explosion vent plate 45, 9 conductive plates 43, 20 square-shell batteries 42 and 20 electrical adapters; multiple square-shell batteries 42 are arranged in sequence, and the i-th square
  • the positive pole 4211 of the shell battery 42 is located on the first side, and the negative pole 4212 is located on the second side.
  • the negative pole 4212 of the (i+1)th square shell battery 42 is located on the first side, and the positive pole 4211 is located on the second side; 10 conductive blocks 41 is arranged on the first side of the 10 square-shell batteries 42 in sequence, and the pole mounting slots 411 of the conductive block 41 are respectively embedded with the positive pole 4211 or the negative pole 4212 of the square-shell battery 42, and the other 10 conductive blocks 41 are sequentially It is provided on the second side of the ten square-shell batteries 42, and the pole mounting slots 411 of the conductive blocks 41 are respectively embedded with the negative poles 4212 or the positive poles 4211 of the square-shell batteries 42; the contact surfaces of adjacent conductive blocks 41 are Insulation is achieved through an insulating layer or insulating pad, and nine conductive plates 43 are used between adjacent conductive blocks 41 to enable 10 square-shell batteries 42 to be connected in series. During specific connection, the conductive block 41 and the positive pole 4211 and the negative pole 4212 of the square shell battery 42 are electrically connected through welding, and the conductive
  • the through slots 412 of the ten conductive blocks 41 on the first side of the square case battery 42 are connected in sequence, and the heat pipes 44 are embedded in the through slots 412.
  • the through slots of the ten conductive blocks 41 on the second side of the square case battery 42 412 are connected in sequence, and a heat pipe 44 is embedded in the slot 412.
  • the outer walls of the above-mentioned heat pipes are provided with an insulating layer to prevent multiple battery packs from being electrically connected through the heat pipe.
  • the heat pipe takes away the heat of the positive pole and the negative pole, thereby This allows the square case battery to operate within a better temperature range.
  • 10 conductive blocks 41 are arranged on the first side of the 10 square case batteries 42 in sequence, and the other 10 conductive blocks 41 are arranged on the second side of the 10 square case batteries 42 in sequence. At this time, the 10 conductive blocks 41 are arranged on the first side of the 10 square case batteries 42.
  • the slots 413 of the conductive blocks 41 on one side and the second side are arranged oppositely.
  • the explosion vent plate 45 is inserted into the slots 413 of the 20 conductive blocks 41 to form a leakage vent with the side walls of the conductive blocks 41 and the cover of the square case battery 42.
  • Explosion channel 46, the above-mentioned explosion venting plate 45 is a U-shaped explosion venting plate or a flat type explosion venting plate.
  • the side walls of the U-shaped explosion venting plate are respectively embedded in the top slot 413 of the conductive block 41 to form an explosion venting channel 46, or a flat type explosion venting panel.
  • the explosion vent plates are respectively embedded in the side wall slots 413 of the conductive block 41 to form an explosion vent channel 46.
  • the explosion vent channel 46 is connected with the explosion vent of the square case battery 42. When the battery is thermally out of control, the thermal runaway smoke will escape from the square case battery 42. It is discharged from the explosion vent, and then directed to the outside of the battery through the explosion channel 46 to avoid secondary impact on the battery.
  • this embodiment provides an electrical adapter for a battery pack.
  • the electrical adapter 51 includes a bus plate 511 and a pole 512; the bus plate 511 is provided with a plurality of
  • the first slot 513 is used for the tabs 571 of each soft-packed battery cell 57 in the battery pack to pass through, and is electrically connected to the bus plate 511 after contact.
  • the first slot 513 The shape matches the cross-section shape of the tab 571. Since the cross-section of the tab 571 of the existing soft-packed battery core 57 is rectangular, the first slot 513 is preferably a rectangular slot with a slightly smaller size.
  • the above-mentioned pole 512 is disposed on the end surface of the bus plate 511 facing away from the soft-packed battery core, and is integrally arranged with the bus plate 511 , that is, the pole 512 can be integrated with the bus plate 511 Extrusion or casting, the pole 512 can be a columnar structure, specifically a cylinder or a rectangular column. Preferably, the pole 512 is a rectangular column, and the rectangular column can increase the connection area with the manifold 511 , thereby increasing the current flow area.
  • bus plate 511 and pole posts 512 can be made of metals with good conductivity, such as copper and aluminum. Copper and aluminum have good conductivity and are more reliable when electrically connected to the tabs 571 of the soft-packed battery core. .
  • this embodiment provides an electrical adapter for a battery pack.
  • the electrical adapter 51 includes a bus plate 511 and a pole 512; different from Embodiment 17,
  • the first slot 513 and the pole 512 are arranged in zones, and the first slot 513 and the pole 512 do not affect each other during installation.
  • a plurality of first slots 513 are arranged in parallel in the first area 515 of the bus plate 511, and the poles 512 are arranged in the second area 516 of the bus plate 511.
  • the first area 515 and the second area 516 are along the length of the bus plate 511.
  • the two areas distributed in the direction, or the first area 515 and the second area 516 are two areas distributed along the width direction of the bus plate 511 . Partitioning the first slots 513 and pole posts 512 not only enables the bus plate 511 to be provided with more first slots 513 in a limited area, thereby allowing more soft-packed batteries to be connected in parallel, but also allows The heat generated by the battery pack and the manifold 511 is well transferred to the poles 512, and then the heat generated by the multiple soft-packed cells and the manifold is concentrated and processed through the poles 512.
  • this embodiment is provided with a through slot 14 on the pole 512.
  • the through slot 14 can be provided with a heat transfer pipe (heat pipe or liquid cooling pipe).
  • the heat generated by the battery pack and the manifold 511 passes through the pole.
  • the column 512 is exported in time and transferred to the heat transfer tube in the slot 14 to avoid the concentration of heat in the battery and to prevent the soft-packed battery core from being too hot and affecting the normal operation of the soft-packed battery core.
  • the above-mentioned first slot 513 is an open slot, that is, the first slot 513 penetrates the manifold 511 on the side away from the pole 512, so that when the pole lug 571 is installed, it can be installed from one side of the manifold 511. Side insertion is more convenient and faster than the bottom-up insertion method, which improves the efficiency of installation and removal.
  • this embodiment provides an upper cover assembly, which includes a cover plate 52 and the electrical adapter 51 in Embodiment 17 or Embodiment 18.
  • the cover 52 is provided with at least two through holes 521. If the number of through holes 521 exceeds two, there will be two through holes 521 for the pole 512 to pass through, and the remaining through holes serve as liquid injection holes or pressure relief ports; as mentioned above
  • the poles 512 of the electrical adapter 51 pass through the through holes 521, and the cover 52 and the electrical adapter 51 are insulated. This insulation can be achieved in a variety of ways, such as providing insulating pads, coating Insulating glue, etc., in this embodiment, an insulating splint 54 is provided between the cover plate 52 and the bus plate 511.
  • the insulating splint 54 is a plate-like structure with a certain hardness, and can be made of polytetrafluoroethylene. Not only Insulation can be achieved, and the cover plate 52 can also be supported.
  • a heat transfer pipe 58 heat pipe or liquid cooling pipe
  • the above-mentioned upper cover assembly also includes an insulating support 53 disposed between the bus plate 511 and the battery pack.
  • the insulating support 53 is provided with tabs 571 for each soft-packed cell 57 in the battery pack to pass through.
  • a plurality of second slots 531, the second slots 531 are convenient for soft-packed batteries
  • the positions of the plurality of strip slits through which the tabs 571 pass correspond to the positions of the first slots.
  • the insulating support 53 can support the electrical adapter 51 when it is connected to the tab 571 , so that the electrical connection between the tab 571 and the bus plate 511 is more consistent and facilitates subsequent installation.
  • the insulating support 53 can also position the welding position of the tab 571 and the bus plate 511, and can pad the gap at the root of the soft-packed battery core to facilitate the pressing and welding of the tab and pole.
  • positioning posts 541 can also be provided on the insulating splint 54 , and positioning holes 532 matching the positioning posts 541 can be provided on the insulating support 53 .
  • the insulating support 53 and the insulating splint 54 are accurately positioned through the positioning posts 541 and the positioning holes 532 .
  • the above-mentioned insulating splint 54 is used to insulate the bus plate 511 and the cover plate 52.
  • Positioning posts 541 and positioning holes 532 are provided, firstly, to position the insulating splint 54, and secondly, by positioning the insulating splint 54 to limit the position of the pole 512.
  • a sealing rubber ring 55 can be provided in the through hole 521 of the cover plate 52.
  • the functions of the sealing rubber ring 55 are: first, to ensure the insulation between the pole post 512 and the cover plate 52, and secondly to ensure the insulation between the pole post 512 and the cover plate 52. Reliable sealing of the connection of cover plate 52.
  • the pole 512 is also equipped with a welding ring 56 on the outside of the cover 52, and the welding ring 56 is welded to the pole 512.
  • the welding ring 56 is provided to firstly position the height of the pole 512, and secondly to use the welding ring for sealing.
  • the rubber ring 55 presses and seals, further ensuring reliable sealing and insulation of the sealing rubber ring 55.
  • this embodiment provides a battery pack, which includes a plurality of soft-packed battery cells 57 and the upper cover assembly in Embodiment 19.
  • the tabs 571 of the multiple soft-packed battery cells 57 respectively pass through the slots of the two busbars 511 and then are bent and welded to the busbars 511 .
  • the installation process of the battery pack in this embodiment is as follows: the insulating support 53 is inserted into the tab of the battery pack from top to bottom, and the tab 571 of the soft-packed battery core is passed through the second slot 531 of the insulating support 53, and then , place the electrical adapter 51 above the insulating support 53 , and in the same manner, remove the positive and negative electrode ears 571 of all soft-packed batteries 57 from the first slots 513 of the two electrical adapters 51 . After inserting, bend the tab 571 of the soft-packed battery core and ensure it is flat, and then weld the tab 571 of the soft-packed battery core to the manifold 511 through laser welding.
  • the insulating splint 54 is installed and positioned through the positioning hole 532 and the positioning post 541.
  • the cover plate 52 is installed from top to bottom. Due to the matching position of the cover plate 52 and the pole post 512, a sealing rubber ring 55 is provided , apply force to press the cover plate 52 in place, so that the sealing rubber ring 55 and the pole post 512 are tightly combined.
  • the cover plate 52 is installed in place, install the welding ring 56. After compressing the sealing rubber ring 55, weld the welding ring 56 and the pole 512 to ensure sealing.

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  • Electrochemistry (AREA)
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Abstract

提供一种极柱、上盖组件、电性转接件、单体电池及电池组，主要解决电池的散热问题。在极柱和电性转接件上设置通槽，以安装传热管，使极柱、电性转接件和电池的温度能够通过传热管传递后得到有效控制。

Description

极柱、上盖组件、电性转接件、单体电池及电池组 技术领域
本申请涉及电池技术领域，特别是涉及一种极柱、上盖组件、电性转接件、单体电池及电池组。
背景技术
目前，动力电池行业或者储能系统的电量从数百瓦时到数千瓦时不等，大型储能系统甚至会达到兆瓦时，电池容量不断提高，相应的电池回路电流也越来越大。电池的极柱是电池发热的主要部位，而目前为电池散热的方式主要集中在为电池壳体安装散热装置，而忽略了极柱本身的散热能力和需求。
公开号为CN114865151A的专利介绍了一种利用空气动力能的高散热电池组，该高散热电池组包括集成壳体、密封顶盖、两个电极柱和多个散热管，所述集成壳体的内部开设有多个电池腔，所述电池腔的内部均装配有电极板组；所述密封顶盖固定于集成壳体的上端；两个所述电极柱固定于密封顶盖的上端，且所述电极柱和电极板组相连接；多个所述散热管均固定于集成壳体的内部，且所述散热管的两端均延伸至集成壳体的外侧。该方案将散热管置于电池壳体内，为电池壳体的散热进行了改进设计，但是极柱易发热的问题依然没有得到解决，电池的温控依次无法得到有效控制。
发明内容
为解决电池极柱以及电池的散热问题，本申请提供一种极柱、上盖组件、电性转接件、单体电池及电池组。
为达到上述目的，本申请的技术方案是：
本申请提供一种极柱，设置在方壳电池的盖板上，所述极柱为柱状体，所述柱状体包括侧壁、第一端面和第二端面，所述侧壁或第一端面上至少设置有一个通槽，以安装传热管，所述第一端面还设置有电连接区。
进一步地，所述极柱第二端面设置有导电连接部，以与方壳电池内的电极组件电连接。
进一步地，所述导电连接部与所述极柱焊接或卡接。
进一步地，所述极柱的高度为20mm～25mm。
进一步地，所述通槽的最低处与所述第二端面之间的距离为7～12mm。
进一步地，所述传热管直径与所述通槽最宽处的比为1:1.05～1:1.1。
进一步地，所述通槽将所述第一端面分为第一区域和第二区域，所述第一区域为所述电连接区，所述第一区域面积与所述第一端面的面积比不低于50％。
进一步地，所述通槽的断面呈C字形或U字形，通槽的深度小于所述传热管的直径。
进一步地，所述通槽表面设置有绝缘层。
本申请提供一种上盖组件，所述上盖组件包括盖板，还包括两个上述任一项所述的极柱，所述极柱绝缘设置在所述盖板上。
进一步地，所述通槽沿所述盖板的宽度方向延伸，所述通槽的长度与所述盖板的宽度比为0.7:1～0.9:1。
本申请提供一种单体电池，包括上述任一项所述的上盖组件。
本申请提供一种电性转接件，设置在方壳电池的极柱上，所述电性转接件为柱状体，所述柱状体包括侧壁、第一端面和第二端面，所述侧壁或第一端面上至少设置有一个通槽，以安装传热管。
进一步地，所述通槽的断面呈C字形或U字形。
进一步地，所述通槽表面设置有绝缘层。
进一步地，所述通槽的最低处与所述第二端面之间的距离为2～4mm。
进一步地，所述传热管直径与所述通槽的最宽处的比为1:1.05～1:1.1。
进一步地，所述电性转接件的高度为11mm～18mm。
进一步地，所述电性转接件在所述通槽最低处设置有固定孔或固定槽，以将所述电性转接件固定在所述极柱上。
进一步地，所述电性转接件还设置有焊接槽和让位槽，所述焊接槽沿所述通槽最低处轴向延伸，所述让位槽沿所述固定孔或固定槽周向设置。
进一步地，所述电性转接件还设置有延长区，沿所述第二端面水平延展。
本申请提供一种单体电池，包括极柱，所述极柱上固定设置有上述任一项所述的电性转接件。
进一步地，所述第二端面至少覆盖所述极柱，所述电性转接件与所述极柱的固定方式为焊接或螺接，所述通槽沿所述单体电池的厚度方向延伸。
本申请提供一种电池组，包括若干上述任一项所述的单体电池，还包括传热管，所述传热管固定设置在所述通槽上，所述传热管为热管或液冷管。
本申请提供一种电性转接件，用于内置若干软包电芯的单体电池，所述电性转接件包括基座、通槽，所述基座包括第一电连接区和第二电连接区，所述通槽设置在所述第一电连接区上，所述通槽用于固定传热管，所述第一电连接区用于与软包电芯的极耳电连接，所述第二电连接区用于与电池组的极板电连接。
进一步地，所述通槽凸设在所述第一电连接区上，所述软包电芯的极耳固定在背向所述通槽的一面。
进一步地，所述通槽包括一对卡齿，所述卡齿之间设置有开口，所述通槽的断面呈C字形。
进一步地，所述卡齿在开口处设置有平台，使所述通槽的断面呈Ω形。
进一步地，所述通槽包括一对卡接片，所述卡接片靠近所述基座的一端为卡接区，所述卡接片远离 所述基座的一端为锁紧区，所述卡接区用于卡接传热管，所述锁紧区用于锁紧固定所述卡接片。
进一步地，所述卡接片的锁紧区之间铆接固定。
进一步地，所述通槽内设置有绝缘层。
本申请提供一种单体电池，所述单体电池包括若干软包电芯，每个所述软包电芯的每一个极耳上均对应电性连接一个根据上述任一项所述的电性转接件。
本申请提供一种电池组，所述电池组包括若干上述的单体电池，还包括温控组件、正极板和负极板，所述极耳与所述电性转接件的所述第一电连接区电连接；所述温控组件包括传热管，所述传热管固定在所述通槽上；所述正极板和负极板固定设置在所述电池组两侧，所述电性转接件的所述第二电连接区与所述正极板或负极板电连接，所述传热管为热管或液冷管。
本申请提供一种电性转接件，包括导电块；所述导电块的顶端设置有至少一个通槽，所述通槽用于安装传热管，所述传热管为热管，所述导电块的顶端或侧面设置有卡槽，所述卡槽用于安装泄爆板。
进一步地，所述导电块的底端设置有极柱安装槽，所述极柱安装槽用于与方壳电池的极柱配合，所述导电块的顶端还设置有焊接槽，所述焊接槽用于与方壳电池的极柱实现焊接。
进一步地，所述通槽为弧形槽或弓形槽，用于实现导电块与热管的紧密接触。
进一步地，所述导电块远离卡槽的一端设置有安装块，所述安装块用于方便实现导电块的电连接。
本申请提供一种上盖组件，包括盖板、正极柱和负极柱，所述盖板上设置有泄爆口，所述泄爆口内设置有泄爆膜，还包括2个上述任一项所述的电性转接件，所述电性转接件分别与正极柱、负极柱一体设置。
本申请提供一种电池组，包括泄爆板、2个导电板、N个方壳电池和2N个上述任一项所述的电性转接件，N为大于等于2的整数；N个方壳电池依次排布，且方壳电池的正极柱位于方壳电池的第一侧，负极柱位于方壳电池的第二侧；N个导电块依次设置在N个方壳电池的第一侧，且导电块分别与方壳电池的正极柱电连接，其它N个导电块依次设置在N个方壳电池的第二侧，且导电块分别与方壳电池的负极柱电连接；2个导电板分别与方壳电池第一侧、第二侧的N个导电块电连接，使得N个方壳电池通过2个导电板实现并联；N个导电块的通槽依次连通，且设置有至少一个热管；所述泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，所述泄爆通道与方壳电池的泄爆口连通。
进一步地，所述导电块与方壳电池的正极柱、负极柱通过焊接实现电连接，所述导电板与导电块或安装块通过螺栓实现电连接。
本申请提供一种电池组，包括泄爆板、N-1个导电板、N个方壳电池和2N个上述任一所述的电性转接件，N为大于等于2的整数；多个方壳电池依次排布，且第i个方壳电池的正极柱位于第一侧，负极柱位于第二侧，第i+1个方壳电池的负极柱位于第一侧，正极柱位于第二侧，i为小于N的正整数；N个导电块 依次设置在N个方壳电池的第一侧，且导电块分别与方壳电池的正极柱或负极柱电连接，其它N个导电块依次设置在N个方壳电池的第二侧，且导电块分别与方壳电池的负极柱或正极柱电连接；相邻导电块的接触面之间绝缘，且2N个导电块之间通过N-1个导电板使得N个方壳电池实现串联；N个导电块的通槽依次连通，且设置有至少一个热管，所述热管的外壁上设置有绝缘层；所述泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，所述泄爆通道与方壳电池的泄爆口连通。
进一步地，所述泄爆板为U型泄爆板或平板型泄爆板，所述U型泄爆板的侧壁分别嵌入第一侧和第二侧导电块的顶端卡槽内形成泄爆通道，或者所述平板型泄爆板分别嵌入第一侧和第二侧导电块的侧壁卡槽内形成泄爆通道，所述导电块与方壳电池的正极柱、负极柱通过焊接实现电连接，所述导电板与导电块或安装块通过螺栓实现电连接。
本申请提供一种电性转接件，包括汇流板和极柱；所述汇流板上设置有多个第一插槽，用于供电池组中每个软包电芯的极耳穿过，并与所述汇流板接触后电连接；所述极柱设置在汇流板的端面上(该端面为汇流板远离电池组的表面)，且与汇流板一体设置，由于上述电性转接件的汇流板和极柱为一体结构，使得多个软包电芯通过一个部件即可实现并联，解决了现有电池组通过多个部件实现并联时的可靠性低以及接触电阻大的问题。同时，上述极柱上设置有通槽，该通槽可位于极柱的侧面或顶面，其贯通的方向与多个第一插槽排布的方向平行，通槽内可设置有传热管(传热管为热管或液冷管)，电池组与汇流板产生的热量通过极柱及时传递至通槽内的传热管内，并通过热管导出，避免电池的热量集中，同时也避免了软包电芯温度过高，对软包电芯的正常工作产生影响。
进一步地，上述第一插槽为开口槽，即第一插槽的一侧贯通于汇流板，使得极耳安装时，可从汇流板的一侧插入，相对于从下向上的插入方式，侧面插入更加方便和快捷，提高了安装和拆卸效率。
进一步地，多个第一插槽平行设置在汇流板的第一区域，极柱设置在汇流板的第二区域，上述第一区域和第二区域为沿汇流板长度方向上分布的两个区域，或者第一区域和第二区域为沿汇流板宽度方向上分布两个区域。将第一插槽和极柱进行分区设置，不仅使汇流板在有限区域内，能够设置较多的第一插槽，进而能够并联更多的软包电芯，以达到提升电池容量的需求，同时还可达到节省空间的目的，同时还能够高效的将电池组与汇流板产生的热量传递至极柱上，从而进行集中处理。
本申请还提供了一种上盖组件，包括盖板和两个用于电池组的电性转接件；所述盖板上设置有至少两个通孔；所述电性转接件的极柱穿过通孔，且盖板与电性转接件之间绝缘设置。
进一步地，上述上盖组件还包括设置在汇流板与电池组之间的绝缘支撑，所述绝缘支撑上设置有供电池组中每个软包电芯的极耳穿过的多个第二插槽。该绝缘支撑能够对极耳与汇流板电连接时进行可靠支撑，防止汇流板与软包电芯壳体接触，也对极耳的移动和变形进行进一步限制，从而能够避免因振动、形变而导致的极耳焊接开裂脱焊。
进一步地，所述盖板和汇流板之间设置有绝缘夹板，所述绝缘夹板上设置有定位柱，所述绝缘支撑上设置有与定位柱配合的定位孔，绝缘支撑和绝缘夹板通过定位柱和定位孔的配合，使得整个盖板的装配更加准确和可靠。
进一步地，所述盖板的通孔内设置有密封橡胶环，用于对极柱与盖板的连接处进行密封。
进一步地，所述极柱位于盖板的外侧还套装有焊接环，所述焊接环与极柱焊接，同时对密封橡胶环进行压紧。
本申请还提供一种电池组，包括多个软包电芯和上述的上盖组件，软包电芯的正极耳和负极耳分别穿过两个汇流板的第一插槽后折弯，并与汇流板焊接。
与现有技术相比，本申请的有益效果：
1.本申请通过在极柱上设置通槽，以在通槽内放置传热管，使极柱的温度能够得到有效控制，极柱又与电池的正、负极的铜箔、铝箔通过金属导电连接片连接，极柱温度得到控制的同时，电池内部的温度也得到有效的控制。进一步在极柱的第一端面上设置电连接区，使其能够通过该电连接区上安装极板以实现多个单体电池的串联或并联，本申请的结构简单、实用性强、易操作，能够使电池组的热量均衡，散热效果好，成本低。
2.本申请通过在极柱上设置带有通槽的电性转接件，以在通槽内放置传热管，使极柱和电池的温度能够通过传热管传递后得到有效控制，进一步在电性转接件的第一端面上或延长区设置电连接区，使其能够通过在该电连接区上安装电池组的极板以实现多个单体电池的串联或并联，本申请的结构简单、实用性强、易操作，能够使电池组的热量均衡，传热散热效果好，成本低。
3.本申请通过设置带有通槽和基座的电性转接件，在基座上设置有第一电连接区和第二电连接区，以使该汇流件能够同时连接软包电芯的极耳和电池组的极板，通槽设在第一电连接区上，第一电连接区直接与电芯的极耳固定，使极耳散发的热量直接传递到通槽上的热管，进一步由热管将热量传递到外接的温控装置上，使电池组的热量均衡并得到控制，该装置结构简单，散热效果好，成本低。
4.本申请电性转接件包括导电块；导电块的顶端设置有至少一个通槽，通槽用于安装热管，导电块的顶端或侧面设置有卡槽，卡槽用于安装泄爆板。该电性转接件结构简单，只需设置电性转接件即可实现多个方壳电池的串联或并联。同时，方壳电池在充放电过程中，极柱连接处的温度最高，基于此，在导电块上设置通槽，通槽可安装热管，可将电池极柱的热量带走，使电池的温度在最佳范围内。此外，该电性转接件上还设置有卡槽，该卡槽可与泄爆板形成泄爆通道，实现对热失控烟气的定向排放。以上结构使得电性转接件具有导电、传热和定向排烟等多种功能，使其应用更加广泛。
5.本申请电性转接件中的汇流板和极柱一体设置，使多个软包电芯通过一个电性转接件即可实现电流的汇聚和引出，该种方式不仅提高了多个软包电芯电连接时的可靠性，还减少了多个部件电连接时的 接触电阻，从而提高了电池的性能；此外，通过一个电性转接件实现电连接，还减少了电池组的安装部件，简化了安装过程。同时，上述极柱上设置有通槽，该通槽可位于极柱的侧面或顶面，其贯通的方向与多个第一插槽排布的方向平行，通槽内可设置有传热管(传热管为热管或液冷管)，电池组与汇流板产生的热量通过极柱及时传递至通槽内的传热管内，并通过热管导出，避免电池的热量集中，同时也避免了软包电芯温度过高，对软包电芯的正常工作产生影响。
附图说明
图1为实施例1中极柱的结构示意图；
图2为实施例1中多种极柱与导电连接部固定后的结构示意图；
图3为实施例1中极柱的尺寸定义示意图；
图4为实施例2中上盖组件的结构示意图；
图5为实施例2中上盖组件的尺寸定义示意图；
图6为实施例3中单体电池的结构示意图；
图7为实施例4中电池组的结构示意图；
图8为实施例5中电性转接件与电池极柱装配后的结构示意图；
图9为实施例5中多种电性转接件的结构示意图；
图10为实施例5中电性转接件尺寸定义示意图；
图11为实施例5中电性转接件及其延长区的结构示意图一；
图12为实施例5中电性转接件及其延长区的俯视图；
图13为实施例5中电性转接件及其延长区的结构示意图二；
图14为实施例6中上盖组件的结构示意图；
图15为实施例7中上盖组件尺寸定义示意图；
图16为实施例7中单体电池的结构示意图；
图17为实施例8中电池组的结构示意图；
图18为实施例9中电性转接件的结构示意图；
图19为实施例9中电性转接件的结构示意图；
图20为实施例9中电性转接件的结构示意图；
图21为实施例10中电性转接件的结构示意图；
图22为实施例10中电性转接件的结构示意图；
图23为实施例11中单体电池的结构示意图；
图24为实施例11中单体电池的结构示意图；
图25为实施例12中电池组的结构示意图；
图26为实施例12中电池组的结构示意图；
图27为本申请实施例13中电性转接件的结构示意图一；
图28为本申请实施例13中电性转接件的结构示意图二；
图29为本申请实施例13中电性转接件的结构示意图三；
图30为本申请实施例13中电性转接件的结构示意图四；
图31为现有方壳电池的结构示意图；
图32为本申请实施例14中上盖组件的结构示意图；
图33为本申请实施例15中电池组的结构示意图一；
图34为本申请实施例15中电池组的结构示意图二；
图35为本申请实施例16中电池组的结构示意图；
图36为本申请实施例17中电性转接件的结构示意图；
图37为本申请实施例18中电性转接件的结构示意图；
图38为本申请实施例19中上盖组件的结构示意图；
图39为本申请实施例20中电池组的结构示意图一；
图40为本申请实施例20中电池组的结构示意图二。
附图标记：11-极柱，110-单体电池，111-第一端面，112-第二端面，113-侧壁，12-通槽，13-导电连接部，141-盖板，142-第一绝缘件，143-第二绝缘件，145-泄爆口，146-注液口，151-正极板，152-负极板，16-传热管，1101-上盖组件，1102-电池筒体，1111-第一区域，1112-第二区域，21-电性转接件，22-通槽，26-传热管，27-温控组件，220-上盖组件，200-单体电池，210-极柱，211-第一端面，212-第二端面，213-侧壁，2101-导电连接部，2111-第一区域，2112-第二区域，221-固定孔，222-焊接槽，223-让位槽，224-延长区，225-固定边，226-容纳槽，241-盖板，242-第一绝缘件，243-第二绝缘件，2441-正极柱，2442-负极柱，245-泄爆口，246-注液口，251-正极板，252-负极板，31-基座，310-电性转接件，311-第一电连接区，312-第二电连接区，32-通槽，321-卡齿，3211-平台，322-卡接片，3221-卡接区，3222-锁紧区，320-电池壳体，3201-绝缘垫片，3202-第一安装位，3203-第二安装位，301-极板，302-第一安装件，303-第二安装件，304-支撑件，41-导电块，42-方壳电池，43-导电板，44-热管，45-泄爆板，46-泄爆通道，411-极柱安装槽，412-通槽，413-卡槽，414-安装块，415-安装孔，416-焊接槽，421-极柱，422-盖板，423-泄爆膜，4211-正极柱，4212-负极柱，51-电性转接件，52-盖板，53-绝缘支撑，54-绝缘夹板，55-密封橡胶环，56-焊接环，57-软包电芯，58-传热管，511-汇流板，512-极柱，513-第一插槽，514-通槽，515-第一区域，516-第二区域，521-通孔，531- 第二插槽，532-定位孔，541-定位柱，571-极耳。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
实施例1
如图1所示，为本实施例提供的一种极柱的结构示意图，本实施例中的极柱11为柱状体，柱状体包括第一端面111、第二端面112和侧壁113，第一端面111或侧壁113上至少设置有一个通槽12，以安装传热管，即通槽12的开口位于第一端面111或侧壁113上。第一端面111设置有电连接区，第二端面112用于设置导电连接部，以与电池壳体内的电极组件电连接。
如图2所示，为本实施例中多种结构的极柱与导电连接部连接后的结构示意图。如图3中的a和b所示，极柱的高度为h1，通槽最低处至第二端面112的距离为h2，通槽最宽处为h3，通槽深度为h4。在不同的实施方式中，通槽12的断面呈C字形或U字形。如图2中的a、b、c、d、n、p、q、r所示，为断面呈C字形的通槽，其开口宽度小于通槽的最宽处h3，这样的设计有利于传热管过盈卡接在通槽12内，C字形通槽其两端形成的弧度具有自然张力，有利于将传热管紧密卡接在通槽内。如图2中的e、f、g、m所示，为断面呈U字形的通槽，其开口宽度略小于通槽的最宽处h3，便于放置传热管，且能够提供足够的操作空间使专用工装将传热管整平或将传热管与通槽贴合的更加紧密。
在本实施例中，如图3中的a和b所示，导电连接部13具体为导电连接片，厚度为2-3mm，形状为矩形，也可以根据不同需求设置不同的形状。正极柱和负极柱的导电连接部选择不同的材质，例如正极柱选择为铝片，负极柱选择为铜片，如果极柱选择铝材，则导电连接部13与正极柱可一体成型，与负极柱则为焊接或卡接固定，具体固定方式根据极柱或导电连接片选择的材质不同而不同。亦与可在铝材制成的一体成型的极柱与导电连接片上增加一层铜片作为负极柱的导电连接片。
如图2中的b d、e、g、q所示，通槽12可置于极柱的第一端面111上，此时第一端面111除通槽开口处的空缺外全部作为电连接区，用以连接极板。如图2中的a、c、f、m所示，通槽12可置于极柱的侧壁113上，此时第一端面111全部作为电连接区，用以连接极板。如图2中的n、p所示，当通槽12的开口位于侧壁113时，可同时在极柱相对两侧设置两个通槽，以增加传热管放置数量，提高极柱的传热效率。
电连接区的面积过小，使得极柱的载流面积变小，会提升极柱的温度，在一些实施方式中，为了增大电连接区的面积，将通槽12偏心设置。如图2中的r所示，通槽12将第一端面分为第一区域1111和第二区域1112，第一区域1111为电连接区，第一区域1111面积占第一端面的面积比不低于50％。这样的设计可有效的使电连接区面积增大，提高载流面积。需要说明的是，第一端面的面积中包含了因通槽开口而缺失的部分面积，即第一端面的面积等同于第二端面的面积。
如图2中的a、c、q、r所示，极柱11水平截面可为圆形、矩形或跑道形，依据不同的电池型号选择不同形状的极柱，亦可为其他不同形状，本实施例中不再穷举。
如如图3中的a和b所示极柱第二端面112靠近电极组件，因此第二端面112距离电池内部电极组件更近，传热管的设置应尽量贴近第二端面112。为适应大部分市面上常用的方壳电池，本实施例中极柱的高度h1为20mm-25mm，通槽的最低处与极柱第二端面112之间的距离h2为7-12mm，这样的设置能够使传热管尽量贴近电池内部以进行传热。传热管的直径过小于通槽时接触不紧密，传热管的直径过大于通槽时导致传热管变形，因此，传热管的直径与通槽的最宽处h3的比为1:1.05-1:1.1。例如，传热管的直径为φ10，则其直径的尺寸为10mm，通槽的最宽处h3则为10.5mm-11mm，使传热管便于放置在桶槽内，再行将其压紧并紧密贴合通槽，提高传热效率。
在一些实施方式中，如如图3中的b所示，通槽的深度h4小于传热管的直径，以使传热管略突出于极柱的表面，有利于将传热管压紧、整平使其与通槽紧密接触。
在一些实施方式中，通槽12表面设置有绝缘层，可以涂覆绝缘材料或者贴硅胶层、橡胶层等，也可以在传热管上设置绝缘层，以使金属材质的传热管与极柱绝缘安装。
本申请通过在极柱上设置通槽，以在通槽内放置传热管，使极柱和电池内部的温度能够得到有效控制，进一步在极柱的第一端面上设置电连接区，使其能够通过该电连接区上安装极板以实现多个单体电池的串联或并联，本申请的结构简单、实用性强、易操作，能够使电池组的热量均衡，散热效果好，成本低。
实施例2
如图4所示，为一种上盖组件的结构示意图。上盖组件包括盖板141、第一绝缘件142、第二绝缘件143和两个极柱11，分别为正极柱和负极柱，第一绝缘件142置于盖板141上，第二绝缘件143置于盖板141下，极柱11依次穿过第二绝缘件143、盖板141、第一绝缘件142后固定在盖板141上，以在极柱的通槽内放置热管。盖板141上还设置有泄爆口145和注液口146。
如图1所示，本实施例中的极柱11为柱状体，柱状体包括第一端面111、第二端面112和侧壁113，第一端面111或侧壁113上至少设置有一个通槽12，以安装传热管，即通槽12的开口位于第一端面111或侧壁113上。第一端面111设置有电连接区，第二端面112用于设置导电连接部，以与电池壳体内的电极组件电连接。如图2所示，为本实施例中多种结构的极柱与导电连接部连接后的结构示意图，其中，极柱的具体结构以及通槽的具体限定详见实施例1。
如图5所示，为盖板和极柱的俯视图，其中通槽的长度h5与盖板的宽度h6之比为0.7:1-0.9:1。盖板141的宽度方向为通槽12的延伸方向，有利于在多个单体电池并联连接时，将一根传热管固定在一组极柱11上。通槽12的长度与盖板的宽度比为0.7:1-0.9:1，有利于增加传热管与通槽12的接触面积，加强 传热效果。
实施例3
如图6所示，为一种单体电池的结构示意图，包括实施例2中描述的上盖组件1101、电池筒体1102和电极组件(图中未示出)。
实施例4
如图7所示，为一种电池组的结构示意图，包括若干实施例3中描述的单体电池110，固定在极柱11上的正极板151和负极板152，还包括固定在极柱11上的传热管16，本实施例中，若干单体电池并联连接。电池组也可以串联连接，但是需要对正极板和负极板进行相应的改进，使单体电池之间串联，并对凹槽或传热管进行绝缘。本实施例中的传热管16为热管或液冷管，使用热管时，在电池组上增加温控组件，使热管的热量传导至温控组件上。使用液冷管时，增加外接的冷水机，利用冷水机实现对电池组的温度控制。
以下对电池组使用本申请提供的极柱，在20±5℃，在电池充放电过程中，利用热管和TEC制冷器降温后，对其各项性能参数进行了汇总分析：
如表1所示，结合如图3中的a和b，标注h2的部分为极柱与盖板的结合塑封区，标注h4的部分为传热管的放置位置。放置传热管后，利用测温仪对电池和极柱的温度进行了测试，发现随着h2和h4数值的改变，电池的极柱和壳体温度发生了相应的变化。当h2小于7mm时，极柱与上盖组件装配完成后，安装传热管的空间不足故不予考虑，而h2大于13mm时，极柱的温度虽然与未使用本申请的极柱时相比所有下降，但电池自身的温度不再持续降低。随着h2的数值增加，在7-12mm的区间内，极柱的温度不高于34℃，电池壳体表面上测量的温度也在36℃左右，整体温度控制相比未使用本申请极柱的市面常规极柱的电池而言，极柱温度最少降低了18.9％，电池壳体表面温度最少降低了4.7％，有效降低了电池整体的温度，显著降低了极柱的温度，安全性能得到了较大提升。
表1不同尺寸通槽下电池极柱和电池壳体表面温度
表2不同尺寸通槽下电池极柱表面温度
如表2所示，结合图5，通槽的长度h5与盖板的宽度h6之比对于电池极柱的温度有较大影响，当h2 固定为7mm时，传热管与极柱的贴合面积越大，传热和散热效果越好，但最长不可超过盖板的宽度。在测试了不同长度的通槽在电池1C充放时极柱的温度后，对比未使用本申请极柱的市面常规电池的极柱，可知极柱表面温度最少降低了20.2％，本申请中的极柱温度显著降低，安全性能得到了较大提升，通槽的长度h5与盖板的宽度h6之比优选0.7:1到0.9:1，降温效果好且节能环保。
实施例5
如图8所示，为本实施例提供的一种电性转接件与电池极柱装配后的结构示意图。本实施例中的电性转接件21为柱状体，柱状体包括第一端面211、第二端面212和侧壁213，第一端面211或侧壁213上至少设置有一个通槽22，以安装传热管，即通槽22的开口位于第一端面211或侧壁213上。第二端面212用于与极柱210固定连接，极柱210还设置有导电连接部2101，以与电池壳体内的电极组件电连接。
如图9所示，为本实施例中多种结构的电性转接件21的结构示意图。如图10所示，电性转接件的高度为h1，通槽22最低处至第二端面212的距离为h2，通槽最宽处为h3，通槽深度为h4。在不同的实施方式中，通槽22的断面呈C字形或U字形。如图9中的a、c、d、f、n所示，断面为C字形的通槽，其开口宽度小于通槽的最宽处h3，有利于传热管过盈卡接在通槽22内，且C字形通槽在开口两端形成的弧度具有自然张力，有利于将传热管紧密卡接在通槽内。如图9的b、e所示，断面为U字形通槽的开口略小于最宽处h3，便于放置传热管，且能够提供足够的操作空间使专用工装将传热管整平或将传热管与通槽卡接使其紧密贴合。C字形通槽和U字形通槽的深度h4不同，根据实际需求可进行选择或调整。
如图9中的a、b、c、f、n所示，通槽22置于极柱的第一端面211上，此时第一端面211除通槽开口处的空缺外全部作为电连接区，用以连接极板。如图9中的d、e所示，通槽22可置于极柱的侧壁213上，此时第一端面211全部作为电连接区，用以连接极板。如图9中的g、m所示，当通槽22的开口位于侧壁213时，可同时在电性转接件相对两侧设置两个通槽，以增加传热管放置数量，提高极柱的传热效率。
电连接区的面积过小，使其载流面积变小，会提升电性连接件的温度，在一些实施方式中，为了增大电连接区的面积，将通槽22偏心设置。如图9中的c所示，通槽22将第一端面分为第一区域2111和第二区域2112，第一区域2111为电连接区，第一区域2111面积占第一端面的面积比不低于50％。这样的设计可有效的使电连接区面积增大，提高载流面积。需要说明的是，第一端面的面积中包含了因通槽开口而缺失的部分面积，即第一端面的面积等同于第二端面的面积。
如图9中的a、d、n所示，电性转接件21的水平截面(横切面)可为圆形、矩形或跑道形，依据不同的电池型号选择不同形状的电性转接件，亦可为其他不同形状，本实施例中不再穷举。
如图10中的a和b所示，电性连接件的第二端面212靠近电极组件，传热管的设置应尽量贴近第二端面212，以提高传热效率，降低电池内部温度。为适应大部分市面上常用的方壳电池，本实施例中电性转接件的高度h1为11mm-18mm，通槽的最低处与极柱第二端面212之间的距离h2为2-4mm，这样的设置能 够使传热管尽量贴近极柱温度最高点以进行传热。传热管的直径过小于通槽时接触不紧密，传热管的直径过大于通槽时导致传热管变形，因此传热管的直径与通槽的最宽处h3的比为1:1.05-1:1.1。例如，传热管的直径为φ10，则其直径的尺寸为10mm，通槽的最宽处h3则为10.5mm-11mm，以使传热管可轻松置于槽内，再压紧使其紧密贴合通槽，提高传热效率。
在一些实施方式中，如图10中的所示，通槽的深度h4小于传热管的直径，以使传热管略突出于极柱的表面，有利于将传热管整平使其与通槽紧密接触。
在一些实施方式中，通槽表面设置有绝缘层，可以涂覆绝缘材料或者贴硅胶层、橡胶层等，也可以在传热管上设置绝缘层，以使金属材质的传热管与电性转接件绝缘安装，以供电池组在串联时使用本申请的电性转接件。
如图9中的b、c、f、n所示，在电性连接件与极柱固定连接时，在电性连接件的通槽底部设置固定孔221，通过该固定孔221将电性连接件与电池极柱固定，具体的，可以采用螺接工艺固定。固定孔也可以为固定槽，通过焊接固定。
如图11和图12所示，为电性连接件设置固定孔和让位槽后的结构示意图。为了在焊接后不影响传热管与通槽的紧密固定，通槽内设置了焊接槽222和让位槽223，焊接槽222沿通槽底部径向延伸，让位槽223沿固定孔221周向设置，焊接槽222的设置使焊接后的溢出焊接料能够填补到焊接槽内但又不至于影响传热管与通槽的卡接面的平整性，保证传热管与通槽内壁的紧密接触。让位槽223的设置使螺栓连接电性转接件和极柱时使螺帽有容纳空间。
电性转接件第二端面212的位置上还设置有延长区224，在单体电池组成电池组后，延长区224与电池组的极板固定连接，以实现若干电池之间的串联或并联。具体的，延长区224与极板之间采用焊接或铆接、螺栓固定等方式连接。延长区224还可以设置翻起的固定边225，以适应不同形式的组装方式。固定边225用于与电池极板电连接，二者采用焊接或铆接、螺栓固定等方式连接。
如图13所示，为了使电性转接件与极柱210固定的更加稳定，第二端面212面向极柱的一面设置有容纳槽226，用以与电池极柱卡接固定。容纳槽226的形状与极柱轮廓匹配，使极柱卡接到容纳槽226内。
实施例6
如图14所示，为本实施例提供的一种上盖组件的结构示意图，上盖组件包括盖板241、第一绝缘件242、第二绝缘件243和正极柱2441、负极柱2442，第一绝缘件242置于盖板241上，第二绝缘件243置于盖板241下，正极柱2441、负极柱2442依次穿过第二绝缘件243、盖板241、第一绝缘件242后固定在盖板241上，正极柱2441和负极柱2442上分别固定设置有电性转接件21，以在电性转接件21的通槽内放置传热管。盖板241上还设置有泄爆口245和注液口246。
如图15所示，为电性转接件上盖组件各尺寸的定义示意图。本实施例中，通槽22的长度h5不低于极 柱的宽度h6。在一定范围内，通槽的长度越长，传热管与电性转接件的接触面积越大，传热效率越好。h7为盖板241的宽度，盖板241与单体电池的厚度相同，电性转接件与极柱的固定方式为焊接或螺接，且通槽22沿单体电池的厚度方向延伸，即通槽22沿单体电池的盖板h7的延伸方向延伸。本实施例提供的上盖组件中，电性转接件、极柱的具体结构以及两者之间的关系具体详见实施例5中的描述。
本实施例在极柱上设置带有通槽的电性转接件，以在通槽内放置传热管，使极柱的温度能够通过传热管传递后得到有效控制，结构简单、实用性强、易操作，能够使电池组的热量均衡，传热散热效果好，成本低。
实施例7
如图16所示，为本实施例一种单体电池的结构示意图，单体电池200包括实施例6中描述的上盖组件220，还包括电池筒体和置于电池筒体内的电极组件(图中未示出)。
本实施例在极柱上设置带有通槽的电性转接件，以在通槽内放置传热管，使极柱的温度能够通过传热管传递后得到有效控制，结构简单、实用性强、易操作，能够使电池组的热量均衡，传热散热效果好，成本低。
实施例8
如图17所示，为本实施例一种电池组的结构示意图，电池组包括若干实施例5中描述的单体电池200，单体电池200之间并联连接。单体电池200正极柱和负极柱上均上设置电性转接件21。电池组还包括温控组件27、正极板251和负极板252，正极板251与所有单体电池的正极柱电连接，负极板252与所有单体电池的负极柱电连接。电池组还包括两根传热管26，分别固定在电池组的正极柱和负极柱的电性转接件21上。电池组还包括温控组件27，温控组件27包括与传热管26进行热量交换的管路和外接设备。传热管26可以为热管或液冷管，当传热管为热管时，温控组件为半导体制冷器，当传热管为液冷管时，温控组件为水冷机。在极柱上设置带有通槽的电性转接件，以在通槽内放置传热管，使极柱的温度能够通过传热管传递后得到有效控制，进一步在电性转接件的第一端面上设置电连接区，使其能够通过在该电连接区上安装电池组的极板以实现多个单体电池的串联或并联，多个单体电池串联连接时，需要对正极板和负极板进行相应的改进，使单体电池之间形成串联电路，并对凹槽或传热管进行绝缘。本申请的结构简单、实用性强、易操作，能够使电池组的热量均衡，传热散热效果好，成本低。
以下对电池组使用本申请提供的极柱后，对其各项性能参数进行了汇总分析：
如图10中的a和b所示，高度为h2部分为电性转接件与极柱的结合塑封区，高度为h4的部分为传热管的放置位置。放置传热管后，利用测温仪对电池壳体表面温度和极柱的温度进行了测试，发现随着h2和h4数值的改变，电池壳体表面温度和极柱的温度发生了相应的变化。当h2小于2mm时，电性转接件与极柱之间固定工艺受限制，而h2大于4mm时，极柱的温度虽然相比未加装电性转接件和传热管时有所下 降，但电池自身的温度下降程度不再明显，因此，h2最佳的选择范围为2-4mm。
表1不同尺寸通槽下电池极柱和电池壳体表面温度
从上表可知，随着h2数值的增加，在2-4mm的区间内，极柱的温度不高于34℃，电池壳体表面的温度也在35℃以下，整体温度控制相比未使用本申请电性转接件和传热管的市面常规极柱的电池而言，极柱温度最少降低了16.4％，电池壳体表面温度最少降低了16.8％，有效降低了电池整体的温度和极柱的温度，安全性能得到了较大提升。
表2不同尺寸通槽下电池极柱表面温度
如表2所示，第二端面覆盖所述极柱，结合图15，通槽的长度h5与极柱的宽度h6之比对于电池极柱的温度有较大影响，当h2固定为3mm时，传热管与极柱的贴合面积越大，传热和散热效果越好，但最长不可超过盖板的宽度。如表2所示，测试了不同长度的通槽在电池1C充放电时极柱的温度，对比未使用本申请电性转接件和传热管的市面常规电池的极柱而言，极柱温度最少降低了17.9％，显著降低了极柱的温度，安全性能得到了较大提升。
如图9中的c所示，当第一端面被通槽分为第一区域2111和第二区域2112后，第一区域2111与第一端面211之间的占比越大，固定电池组的极板的面积则越大，载流面积也就越大。
实施例9
如图18和图19所示，为一种电性转接件的结构示意图，本实施例中的电性转接件应用于内置若干软包电芯的单体电池，软包电芯的极耳伸出单体电池壳体，若干极耳一一连接电性转接件，利用该单体电池组成电池组后，所有电性转接件再电连接至电池组的正极板和负极板上，以实现若干单体电池的串联或并联。
如图18和图19所示，电性转接件包括基座31、通槽32，基座包括第一电连接区311和第二电连接区312，通槽32设置在第一电连接区311上，通槽32用于固定传热管，第一电连接区311用于与单体电池的极耳电连接，第二电连接区312用于与电池组的极板电连接。通槽32凸设在第一电连接区311上，通槽32在轴向上的长度与基座的宽度接近或相同，单体电池的若干极耳弯折后，其折面固定在第一电连接区311背向通槽的一面，具体可采用焊接固定。电池在使用过程中，极耳的温度最高，为了提高电池的安全性、延长电池的使用寿命，对电池进行降温非常重要，因此基座第一电连接区的长度应当尽量与极耳相同， 以使极耳的热量全面传导至电性转接件上，并进一步使传热管与电性转接件充分接触，达到利用传热管对极耳降温的效果，该装置结构简单，降温效果好。
具体的，通槽为卡槽，卡槽包括一对卡齿，卡齿之间设置有开口，使通槽的断面呈C字形。传热管通过开口卡入卡齿之间固定。卡齿与基座的连接处的厚度较厚，至开口处逐渐变薄。在一些实施方式中，通槽内壁设置有绝缘层，以供绝缘环境下使用。
在一些实施方式中，如图20所示，卡齿321在开口处设置有平台3211，平台3211沿卡齿开口处向外翻起并凸出于卡齿的边沿，平台3211的表面与基座31近于平行，使通槽的断面呈Ω形。传热管置入通槽32后，为了增加传热管与通槽32的接触面积，需要将传热管挤压至与卡齿紧密贴合的程度，平台3211的设置则是为了提供挤压传热管时的受力平面，加大卡齿的受力面积，使卡齿受力均匀，保证卡齿不在挤压过程中因局部压力过大而发生形变或断裂，同时保证传热管在一定程度内压扁变形，紧密贴合通槽内壁。
在单体电池组成电池组后，第二电连接区312与电池组的极板固定连接，以实现若干电池之间的串联或并联。具体的，第二电连接区312与极板之间采用焊接或铆接、螺栓固定等方式连接。
实施例10
如图18和图19所示，为一种电性转接件的结构示意图，本实施例中的电性转接件应用于内置若干软包电芯的单体电池，软包电芯的极耳伸出单体电池壳体，若干极耳一一连接电性转接件，利用该单体电池组成电池组后，所有电性转接件再电连接至电池组的正极板和负极板上，以实现若干单体电池的串联或并联。
电性转接件包括基座31、通槽32，基座包括第一电连接区311和第二电连接区312，通槽32设置在第一电连接区311上，通槽32用于固定传热管，第一电连接区311用于与单体电池的极耳电连接，第二电连接区312用于与单体电池组成的电池组的极板电连接。
通槽32凸设在第一电连接区311上，通槽32在轴向上的长度与基座的宽度接近或相同，单体电池的若干极耳弯折后，其折面固定在第一电连接区311背向通槽的一面，具体可采用焊接固定。电池在使用过程中，极耳的温度最高，为了提高电池的安全性、延长电池的使用寿命，对电池进行降温非常重要，因此基座第一电连接区的长度应当尽量与极耳相同，以使极耳的热量全面传导至电性转接件上，并进一步使传热管与电性转接件充分接触，达到利用传热管对极耳降温的效果，该装置结构简单，降温效果好。
在一些实施方式中，通槽内壁设置有绝缘层，以供绝缘环境下使用。
如图21和图22所示，通槽32包括一对卡接片322，卡接片322靠近基座31一端为卡接区3221，卡接片322远离基座31的一端为锁紧区3222,卡接区3221用于卡接传热管，锁紧区3222用于锁紧固定卡接片。优选的，卡接片322的锁紧区通过铆接固定。卡接片之间通过铆接固定有利于卡接片与传热管的紧密接触， 便于传热管与通槽的紧密固定，以使传热管的传热效果更好，且操作简便，效率高。
实施例11
如图23和图24所示，为一种单体电池的结构示意图，单体电池包括电池壳体320，电池壳体320内置若干软包电芯，每一个软包电芯的每一个极耳上固定设置有实施例9或2中描述的电性转接件310，电池壳体320为金属材质，电性转接件310与电池壳体320之间设置有绝缘垫片3201，避免电性转接件与电池壳体之间导电。
实施例12
本实施例提供一种电池组，该电池组包括温控组件、正极板和负极板，电池组由若干实施例11中提供的单体电池组成，单体电池的极耳与电性转接件310的第一电连接区电连接；温控组件包括若干传热管，传热管固定在通槽上；极板301分为正极板和负极板，正极板和负极板固定设置在电池组两侧，电性转接件的第二电连接区分别与正极板或负极板电性连接。本实施例中，传热管为热管或液冷管。
如图23、图24、图25和图26所示，单体电池包括上盖板、筒体和下盖板，极板301为L形，极板在上盖板的平行面上与电性转接件310电连接，L形极板在筒体的平行面上设置有连接部，用以与相邻的电池串联或并联形成电池组。电池壳体上设置有第一安装位3202、第二安装位3203，第一安装位3202沿电池壳体的高度方向凸设在电池壳体320两侧，第二安装位3203沿壳体的厚度方向凸设在下盖板上。电池组包括第一安装件302，第一组安件302为L形，包括两个互相垂直的安装面，在电池壳体下盖板平行面和垂直面上贴合包覆电池壳体的下盖板与电池筒体，第一安装件302的第一安装面与第一安装位3202固定安装，第二安装面与第二安装位3203固定安装。电池设置有第二安装件303，第二安装件303沿电池堆叠的方向延伸，固定在电池壳体两侧的第一安装位3202上。电池还设置有支撑件304，固定设置在第一电池壳体下盖板的一面，用于将电池安装在电池支架上。
若干单体电池组成电池组时，单体电池之间为并联连接的情况下，传热管不设置绝缘层，单体电池之间串联连接情况下，传热管设置绝缘层，或者通槽内设置绝缘层，以避免传热管与通槽接触导电。
实施例13
如图27至图30所示，本实施例提供一种电性转接件，电性转接件包括导电块41；导电块41的底端设置有极柱安装槽411，极柱安装槽411用于与方壳电池42的极柱421配合，导电块41的顶端设置有至少一个通槽412，通槽412用于安装传热管，该传热管为热管44，导电块41的顶端或侧面设置有卡槽413，卡槽413用于安装泄爆板45。该电性转接件结构简单，只需设置电性转接件即可实现多个方壳电池42的串联或并联。通过该电性转接件可实现多个方壳电池42的串联或并联，同时，方壳电池42在充放电过程中，极柱连接处的温度最高，基于此，在导电块41上设置通槽412，在通槽412内可安装热管44，将电池极柱421的热量带走，使电池的温度在最佳范围内。此外，该电性转接件上还设置有卡槽413，该卡槽413可 与泄爆板45形成泄爆通道46，实现对热失控烟气的定向排放，以上结构使得该电性转接件具有导电、散热和排烟等多种功能，应用更加广泛。
为使得多个或相邻导电块41方便实现电连接，可在导电块41远离卡槽413的侧面设置有安装块414，通过安装块414实现相邻导电块41的电连接。此外，还可安装块414上设置有安装孔415，通过在安装孔415内设置螺栓的方式实现可靠电连接。上述导电块41的顶端还设置有焊接槽416，该焊接槽416的形成，使得导电块41与方壳电池的极柱421通过焊接实现电连接时，焊接部分壁厚减少，焊接更加可靠。上述通槽412具体可为弧形槽或弓形槽，弧形槽或弓形槽可使得热管44嵌入通槽412时，嵌入的更加紧密，使得导电块41与热管44紧密接触，从而更好的实现传热，提高传热效果。
本实施例电性转接件是一种方便现有方壳电池串并联的连接件，该连接件为挤压件，固定在单体方壳电池正极柱4211或负极柱4212上，可以采用焊接或者打孔螺钉固定，也可将其与盖板422极柱421设计成一体，当多个方壳电池42并联或串联时，可以通过电性转接件上的通槽412插入热管44给电池散热，同时，泄爆板45嵌入电性转接件的卡槽413内，与电性转接件的侧壁、盖板422形成一个泄爆通道46，泄爆通道46实现热失控烟气的定向排放，该泄爆板45采用绝缘材料制作，例如，塑料、绝缘橡胶等。此外，根据需要可以在多个方壳电池42之间注入胶体并固化，形成良好散热的整体pack组。
实施例14
如图31和图32所示，现有方壳电池包括上盖组件、电池壳体和电极组件，电极组件设置在上盖组件和电池壳体形成的封闭腔体内。本实施例提供的上盖组件包括盖板422、极柱421和2个电性转接件，极柱421包括正极柱4211和负极柱4212，正极柱4211和负极柱4212穿过盖板422设置，该盖板422上设置有泄爆口，泄爆口内设置有泄爆膜423。导电块41的底端设置有极柱安装槽411，极柱安装槽411用于与方壳电池42的正极柱4211、负极柱4212配合，使得，电性转接件分别与正极柱、负极柱一体设置。导电块41的顶端设置有至少一个通槽412，通槽412用于安装热管44，导电块41的顶端或侧面设置有卡槽413，卡槽413用于安装泄爆板45。通过该电性转接件可实现多个方壳电池42的串联或并联，同时，在通槽412可安装热管44，将电池极柱421的热量带走，使电池温度在最佳范围内。此外，该电性转接件上还设置有卡槽413，该卡槽413可与泄爆板45形成泄爆通道46，实现对热失控烟气的定向排放，使得该电性转接件具有导电、散热和排烟等多种功能。
实施例15
本申请提供一种电池组，该电池组为多个方壳电池并联形成的电池组，该电池组包括泄爆板、2个导电板、N个方壳电池和2N个电性转接件，N为大于等于2的整数；N个方壳电池依次排布，且方壳电池的正极柱位于方壳电池的第一侧，负极柱位于方壳电池的第二侧；N个导电块依次设置在N个方壳电池的第一侧，且导电块的极柱安装槽分别与方壳电池的正极柱嵌入式配合，其它N个导电块依次设置在N个方壳 电池的第二侧，且导电块的极柱安装槽分别与方壳电池的负极柱嵌入式配合；2个导电板分别与方壳电池第一侧、第二侧的N个导电块电连接，使得N个方壳电池通过2个导电板实现并联；N个电性转接件的通槽依次连通，且设置有至少一个热管；泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，泄爆通道与方壳电池的泄爆口连通。
如图33和图34所示，该电池组包括泄爆板45、2个导电板43、10个方壳电池42和20个电性转接件。10个方壳电池42依次排布，且方壳电池42的正极柱4211位于方壳电池42的第一侧，负极柱4212位于方壳电池42的第二侧；10个导电块41依次设置在10个方壳电池42的第一侧，且导电块41的极柱安装槽411分别与方壳电池42的正极柱4211嵌入式配合，其它10个导电块41依次设置在10个方壳电池42的第二侧，且导电块41的极柱安装槽411分别与方壳电池42的负极柱4212嵌入式配合。与此同时，单个导电板43与第一侧的10个导电块41均电连接，即与正极柱连接的导电块41电连接，另一个导电板43与第二侧的10个导电块41均电连接，即与负极柱连接的导电块41电连接，从而使得N个方壳电池42通过2个导电板43实现并联。具体连接时，导电块与方壳电池42的正极柱4211、负极柱4212通过焊接实现电连接，导电板43与导电块41通过螺栓实现电连接。
本实施例中，方壳电池42第一侧的10个导电块41的通槽412依次连通，且通槽412内嵌入有热管44，方壳电池42第二侧的10个导电块41的通槽412依次连通，且通槽412内嵌入有热管44，热管将正极柱和负极柱的热量带走，从而使得方壳电池运行在较佳的温度范围内。
本实施例中，10个导电块41依次设置在10个方壳电池42的第一侧，其它10个导电块41依次设置在10个方壳电池42的第二侧，此时，设置在第一侧和第二侧的导电块41的卡槽413相对设置，泄爆板45插入2N个导电块41的卡槽413内，与导电块41的侧壁、方壳电池42的盖板形成泄爆通道46，上述泄爆板45为U型泄爆板或平板型泄爆板，U型泄爆板的侧壁分别嵌入导电块41的顶端卡槽413内形成泄爆通道46，或者平板型泄爆板分别嵌入导电块41的侧壁卡槽413内形成泄爆通道46，泄爆通道46与方壳电池42的泄爆口连通，电池热失控时，热失控烟气从方壳电池42的泄爆口排出，进而通过泄爆通道46将其定向排放至电池外侧，避免热失控烟气对电池产生二次影响。
实施例16
本申请提供一种电池组，该电池组为方壳电池串联形成的电池组，包括泄爆板、N-1个导电板、N个方壳电池和2N个电性转接件，N为大于等于2的整数；多个方壳电池依次排布，且第i个方壳电池的正极柱位于第一侧，负极柱位于第二侧，第i+1个方壳电池的负极柱位于第一侧，正极柱位于第二侧；N个导电块依次设置在N个方壳电池的第一侧，且导电块的极柱安装槽分别与方壳电池的正极柱或负极柱嵌入式配合，其它N个导电块依次设置在N个方壳电池的第二侧，且导电块的极柱安装槽分别与方壳电池的负极柱或正极柱嵌入式配合；相邻导电块的接触面之间绝缘，且2N个导电块之间通过N-1个导电板使 得N个方壳电池实现串联；N个电性转接件的通槽依次连通，且设置有至少一个热管，热管的外壁上设置有绝缘层；泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，所述泄爆通道与方壳电池的泄爆口连通。
如图35所示，电池组包括泄爆板45、9个导电板43、20个方壳电池42和20个电性转接件；多个方壳电池42依次排布，且第i个方壳电池42的正极柱4211位于第一侧，负极柱4212位于第二侧，第i+1个方壳电池42的负极柱4212位于第一侧，正极柱4211位于第二侧；10个导电块41依次设置在10个方壳电池42的第一侧，且导电块41的极柱安装槽411分别与方壳电池42的正极柱4211或负极柱4212嵌入式配合，其它10个导电块41依次设置在10个方壳电池42的第二侧，且导电块41的极柱安装槽411分别与方壳电池42的负极柱4212或正极柱4211嵌入式配合；相邻导电块41的接触面之间通过绝缘层或绝缘垫实现绝缘，且相邻导电块41之间通过9个导电板43使得10个方壳电池42实现串联。具体连接时，导电块41与方壳电池42的正极柱4211、负极柱4212通过焊接实现电连接，导电板43与导电块41通过螺栓实现电连接。
本实施例中，方壳电池42第一侧的10个导电块41的通槽412依次连通，且通槽412内嵌入有热管44，方壳电池42第二侧的10导电块41的通槽412依次连通，且通槽412内嵌入有热管44，上述热管的外壁上均设置有绝缘层，防止多个电池组通过热管实现电连接，该热管将正极柱和负极柱的热量带走，从而使得方壳电池运行在较佳的温度范围内。
本实施例中，10个导电块41依次设置在10个方壳电池42的第一侧，其它10个导电块41依次设置在10个方壳电池42的第二侧，此时，设置在第一侧和第二侧的导电块41的卡槽413相对设置，泄爆板45插入20个导电块41的卡槽413内，与导电块41的侧壁、方壳电池42的盖板形成泄爆通道46，上述泄爆板45为U型泄爆板或平板型泄爆板，U型泄爆板的侧壁分别嵌入导电块41的顶端卡槽413内形成泄爆通道46，或者平板型泄爆板分别嵌入导电块41的侧壁卡槽413内形成泄爆通道46，泄爆通道46与方壳电池42的泄爆口连通，电池热失控时，热失控烟气从方壳电池42的泄爆口排出，进而通过泄爆通道46将其定向排放至电池外侧，避免对电池产生二次影响。
实施例17
如图36和图40所示，本实施例提供一种用于电池组的电性转接件，该电性转接件51包括汇流板511和极柱512；汇流板511上设置有多个第一插槽513，用于供电池组中每个软包电芯57的极耳571穿过，并与汇流板511接触后电连接，为方便极耳571穿过，上述第一插槽513的形状与极耳571横截面的形状相匹配，由于现有软包电芯57的极耳571横截面为矩形，所以上述第一插槽513优选为矩形插槽，该矩形插槽的尺寸稍大于极耳571的尺寸，确保极耳571能够穿过插槽即可，若矩形插槽的尺寸相比极耳571横截面的尺寸来说过大，则极耳571在第一插槽513内的定位准确性较差，使得后续的焊接质量较差。上述极柱512设置在汇流板511背向软包电芯的端面上，且与汇流板511一体设置，即极柱512可与汇流板511一体 挤压或铸造成型，该极柱512可为柱状结构，其具体可为圆柱体、矩形柱体，优选的，该极柱512为矩形柱体，矩形柱体可增加与汇流板511的连接面积，进而增加电流的过流面积。
此外，上述汇流板511与极柱512具体可采用导电性较好的金属制作，例如，铜和铝，铜和铝的导电性良好，与软包电芯的极耳571电连接时，更加可靠。
实施例18
如图37和图39所示，本实施例提供一种用于电池组的电性转接件，该电性转接件51包括汇流板511和极柱512；与实施例17不同的是，本实施例对第一插槽513和极柱512进行分区设置，第一插槽513和极柱512在安装时互不影响。例如，多个第一插槽513平行设置在汇流板511的第一区域515，极柱512设置在汇流板511的第二区域516，第一区域515和第二区域516为沿汇流板511长度方向上分布的两个区域，或者第一区域515和第二区域516为沿汇流板511宽度方向上分布两个区域。将第一插槽513和极柱512进行分区设置，不仅使汇流板511在有限区域内，能够设置更多的第一插槽513，进而能够并联更多的软包电芯，而且还可将电池组与汇流板511产生的热量均很好的传递至极柱512上，进而通过极柱512对多个软包电芯与汇流板处产生的热量集中进行处理。
为了对上述热量集中处理，本实施例在极柱512上设置有通槽14，该通槽14可设置有传热管(热管或液冷管)，电池组、汇流板511产生的热量通过极柱512及时导出，并传递至通槽14内的传热管，避免电池的热量集中，同时也避免软包电芯温度过高，对软包电芯的正常工作产生影响。
在本实施例中，上述第一插槽513为开口槽，即第一插槽513在远离极柱512的一侧贯穿于汇流板511，使得极耳571安装时，可从汇流板511的一侧插入，相对于从下向上的插入方式，侧面插入更加方便和快捷，提高了安装和拆卸效率。
实施例19
如图38所示，本实施例提供一种上盖组件，该上盖组件包括盖板52和实施例17或实施例18中电性转接件51。盖板52上设置有至少两个通孔521，若通孔521数量超过两个，则有两个通孔521供极柱512穿过，其余的通孔作为注液孔或泄压口；上述电性转接件51的极柱512穿过通孔521，且盖板52与电性转接件51之间绝缘设置，该绝缘设置可通过多种方式实现，例如，设置绝缘垫、涂覆绝缘胶等等，在本实施例中，在盖板52和汇流板511之间设置有绝缘夹板54，该绝缘夹板54为具有一定硬度的板状结构，具体可采用聚四氟乙烯制作，不仅能够实现绝缘，还能够实现对盖板52的支撑。此外，上述电性转接件51的通槽14内还能够设置有传热管58(热管或液冷管)，将电池组、汇流板511产生的热量通过极柱512进行及时导出。
在本实施例中，上述上盖组件还包括设置在汇流板511与电池组之间的绝缘支撑53，绝缘支撑53上设置有供电池组中每个软包电芯57的极耳571穿过的多个第二插槽531,该第二插槽531为方便软包电芯 极耳571穿过的多个条形缝，其位置与第一插槽的位置相对应。该绝缘支撑53可对电性转接件51与极耳571连接时进行支撑，使得极耳571与汇流板511电连接的一致性较好，便于后续的安装。此外，该绝缘支撑53还能够对极耳571和汇流板511焊接位置进行定位，以及能够将软包电芯根部空挡处进行垫实，方便极耳和极柱能压紧焊接。
此外，还可在上述绝缘夹板54上设置定位柱541，绝缘支撑53上设置与定位柱541配合的定位孔532。绝缘支撑53和绝缘夹板54通过定位柱541和定位孔532实现准确的定位。上述绝缘夹板54用于对汇流板511和盖板52进行绝缘，设置定位柱541和定位孔532，一是为了对绝缘夹板54进行定位，二是通过对绝缘夹板54的定位限定极柱512的位置，保证极柱512的位置准确，确保极柱512和盖板52的安装和配合，同时确保极柱汇流板511左右与外壳体的间隙绝缘，使得整个盖板52的装配更加准确和可靠。
在本实施例中，可在盖板52的通孔521内设置密封橡胶环55，密封橡胶环55的作用：一是保证极柱512与盖板52之间的绝缘，二保证极柱512与盖板52的连接处的可靠密封。此外，极柱512位于盖板52的外侧还套装有焊接环56，焊接环56与极柱512焊接，设置焊接环56，一是可对极柱512高度的位置定位，二采用焊接环对密封橡胶环55压紧密封，进一步保证密封橡胶环55的可靠密封和绝缘。
实施例20
如图39和图40所示，本实施例提供一种电池组，该电池组包括多个软包电芯57和实施例19中的上盖组件，多个软包电芯57的极耳571(包括正极耳和负极耳)分别穿过两个汇流板511的插槽后折弯，并与汇流板511焊接。
本实施例电池组的安装过程如下：绝缘支撑53从上往下插入电池组的极耳中，并将软包电芯的极耳571从绝缘支撑53的第二插槽531中穿出，随后，将电性转接件51放置在绝缘支撑53的上方，以同样的方式将全部软包电芯57的正、负极耳571分别从两个电性转接件51的第一插槽513内穿出，将软包电芯的极耳571折弯并保证平整后，通过激光焊接将软包电芯的极耳571和汇流板511焊接。随后安装绝缘夹板54并通过定位孔532和定位柱541进行配合定位，绝缘夹板54安装到位后，从上往下安装盖板52，由于盖板52和极柱512的配合位置设置密封橡胶环55，施力将盖板52压到位，使密封橡胶环55和极柱512紧密结合。盖板52安装到位后，安装焊接环56，压缩密封橡胶环55后将焊接环56和极柱512焊接，保证密封。

Claims (50)

  1. 一种极柱，设置在方壳电池的盖板上，其特征在于，所述极柱为柱状体，所述柱状体包括侧壁、第一端面和第二端面，所述侧壁或第一端面上至少设置有一个通槽，以安装传热管，所述第一端面还设置有电连接区。
  2. 根据权利要求1所述的极柱，其特征在于，所述极柱第二端面设置有导电连接部，以与方壳电池内的电极组件电连接。
  3. 根据权利要求2所述的极柱，其特征在于，所述导电连接部与所述极柱焊接或卡接。
  4. 根据权利要求1所述的极柱，其特征在于，所述极柱的高度为20mm～25mm。
  5. 根据权利要求1所述的极柱，其特征在于，所述通槽的最低处与所述第二端面之间的距离为7～12mm。
  6. 根据权利要求1所述的极柱，其特征在于，所述传热管直径与所述通槽最宽处的比为1:1.05～1:1.1。
  7. 根据权利要求1所述的极柱，其特征在于，所述通槽将所述第一端面分为第一区域和第二区域，所述第一区域为所述电连接区，所述第一区域面积与所述第一端面的面积比不低于50％。
  8. 根据权利要求1所述的极柱，其特征在于，所述通槽的断面呈C字形或U字形，所述通槽的深度小于所述传热管的直径。
  9. 根据权利要求1所述的极柱，其特征在于，所述通槽表面设置有绝缘层。
  10. 一种上盖组件，其特征在于，所述上盖组件包括盖板，还包括两个权利要求1至9任一项所述的极柱，所述极柱绝缘设置在所述盖板上。
  11. 根据权利要求10所述的上盖组件，其特征在于，所述通槽沿所述盖板的宽度方向延伸，所述通槽的长度与所述盖板的宽度比为0.7:1～0.9:1。
  12. 一种单体电池，其特征在于，包括权利要求10至11任一项所述的上盖组件。
  13. 一种电性转接件，设置在方壳电池的极柱上，其特征在于，所述电性转接件为柱状体，所述柱状体包括侧壁、第一端面和第二端面，所述侧壁或第一端面上至少设置有一个通槽，以安装传热管。
  14. 根据权利要求13所述的电性转接件，其特征在于，所述通槽的断面呈C字形或U字形。
  15. 根据权利要求13所述的电性转接件，其特征在于，所述通槽表面设置有绝缘层。
  16. 根据权利要求13所述的电性转接件，其特征在于，所述通槽的最低处与所述第二端面之间的距离为2～4mm。
  17. 根据权利要求13所述的电性转接件，其特征在于，所述传热管直径与所述通槽的最宽处的比为1:1.05～1:1.1。
  18. 根据权利要求13所述的电性转接件，其特征在于，所述电性转接件的高度为11mm～18mm。
  19. 根据权利要求13所述的电性转接件，其特征在于，所述电性转接件在所述通槽最低处设置有固定孔或固定槽，以将所述电性转接件固定在所述极柱上。
  20. 根据权利要求19所述的电性转接件，其特征在于，所述电性转接件还设置有焊接槽和让位槽，所述焊接槽沿所述通槽最低处轴向延伸，所述让位槽沿所述固定孔或固定槽周向设置。
  21. 根据权利要求13所述的电性转接件，其特征在于，所述电性转接件还设置有延长区，沿所述第二端面水平延展。
  22. 一种单体电池，其特征在于，包括极柱，所述极柱上固定设置有权利要求13至21任一项所述的电性转接件。
  23. 根据权利要求22所述的单体电池，其特征在于，所述第二端面至少覆盖所述极柱，所述电性转接件与所述极柱的固定方式为焊接或螺接，所述通槽沿所述单体电池的厚度方向延伸。
  24. 一种电池组，其特征在于，包括若干权利要求12、权利要求22至23任一项所述的单体电池，还包括传热管，所述传热管固定设置在所述通槽上，所述传热管为热管或液冷管。
  25. 一种电性转接件，用于内置若干软包电芯的单体电池，其特征在于，所述电性转接件包括基座、通槽，所述基座包括第一电连接区和第二电连接区，所述通槽设置在所述第一电连接区上，所述通槽用于固定传热管，所述第一电连接区用于与软包电芯的极耳电连接，所述第二电连接区用于与电池组的极板电连接。
  26. 根据权利要求25所述的电性转接件，其特征在于，所述通槽凸设在所述第一电连接区上，所述软包电芯的极耳固定在背向所述通槽的一面。
  27. 根据权利要求25或26所述的电性转接件，其特征在于，所述通槽包括一对卡齿，所述卡齿之间设置有开口，所述通槽的断面呈C字形。
  28. 根据权利要求27所述的电性转接件，其特征在于，所述卡齿在开口处设置有平台，使所述通槽的断面呈Ω形。
  29. 根据权利要求25所述的电性转接件，其特征在于，所述通槽包括一对卡接片，所述卡接片靠近所述基座的一端为卡接区，所述卡接片远离所述基座的一端为锁紧区，所述卡接区用于卡接传热管，所述锁紧区用于锁紧固定所述卡接片。
  30. 根据权利要求29所述的电性转接件，其特征在于，所述卡接片的锁紧区之间铆接固定。
  31. 根据权利要求25所述的电性转接件，其特征在于，所述通槽内设置有绝缘层。
  32. 一种单体电池，其特征在于，所述单体电池包括若干软包电芯，每个所述软包电芯的每一个极耳上均对应电性连接一个权利要求25至31任一项所述的电性转接件。
  33. 一种电池组，其特征在于，所述电池组包括若干权利要求32所述的单体电池，还包括温控组件、正极板和负极板，所述极耳与所述电性转接件的所述第一电连接区电连接；所述温控组件包括传热管，所述传热管固定在所述通槽上；所述正极板和负极板固定设置在所述电池组两侧，所述电性转接件的所述第二电连接区与所述正极板或负极板电连接，所述传热管为热管或液冷管。
  34. 一种电性转接件，其特征在于，包括导电块；所述导电块的顶端设置有至少一个通槽，所述通槽用于安装传热管，所述传热管为热管，所述导电块的顶端或侧面设置有卡槽，所述卡槽用于安装泄爆板。
  35. 根据权利要求34所述的电性转接件，其特征在于，所述导电块的底端设置有极柱安装槽，所述极柱安装槽用于与方壳电池的极柱配合，所述导电块的顶端还设置有焊接槽，所述焊接槽用于与方壳电池的极柱实现焊接。
  36. 根据权利要求34所述的电性转接件，其特征在于，所述通槽为弧形槽或弓形槽，用于实现导电块与热管的紧密接触。
  37. 根据权利要求34所述的电性转接件，其特征在于，所述导电块远离卡槽的一端设置有安装块，所述安装块用于方便实现导电块的电连接。
  38. 一种上盖组件，包括盖板、正极柱和负极柱，所述盖板上设置有泄爆口，所述泄爆口内设置有泄爆膜，其特征在于，还包括2个权利要求34至37任一项所述的电性转接件，所述电性转接件分别与正极柱、负极柱一体设置。
  39. 一种电池组，其特征在于，包括泄爆板、2个导电板、N个方壳电池和2N个权利要求34至37任一项所述的电性转接件，N为大于等于2的整数；N个方壳电池依次排布，且方壳电池的正极柱位于方壳电池的第一侧，负极柱位于方壳电池的第二侧；N个导电块依次设置在N个方壳电池的第一侧，且导电块分别与方壳电池的正极柱电连接，其它N个导电块依次设置在N个方壳电池的第二侧，且导电块分别与方壳电池的负极柱电连接；2个导电板分别与方壳电池第一侧、第二侧的N个导电块电连接，使得N个方壳电池通过2个导电板实现并联；N个导电块的通槽依次连通，且设置有至少一个热管；所述泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，所述泄爆通道与方壳电池的泄爆口连通。
  40. 根据权利要求39所述的电池组，其特征在于，所述泄爆板为U型泄爆板或平板型泄爆板，所述U型泄爆板的侧壁分别嵌入第一侧和第二侧导电块的顶端卡槽内形成泄爆通道，或者所述平板型泄爆板分别嵌入第一侧和第二侧导电块的侧壁卡槽内形成泄爆通道。
  41. 根据权利要求40所述的电池组，其特征在于，所述导电块与方壳电池的正极柱、负极柱通过焊接实现电连接，所述导电板与导电块或安装块通过螺栓实现电连接。
  42. 一种电池组，其特征在于，包括泄爆板、N-1个导电板、N个方壳电池和2N个权利要求34至37任一所述的电性转接件，N为大于等于2的整数；多个方壳电池依次排布，且第i个方壳电池的正极柱位于第一侧，负极柱位于第二侧，第i+1个方壳电池的负极柱位于第一侧，正极柱位于第二侧，i为小于N的正整数；N个导电块依次设置在N个方壳电池的第一侧，且导电块分别与方壳电池的正极柱或负极柱电连接，其它N个导电块依次设置在N个方壳电池的第二侧，且导电块分别与方壳电池的负极柱或正极柱电连接；相邻导电块的接触面之间绝缘，且2N个导电块之间通过N-1个导电板使得N个方壳电池实现串联；N个导电块的通槽依次连通，且设置有至少一个热管，所述热管的外壁上设置有绝缘层；所述泄爆板插入2N个导电块的卡槽内，与导电块的侧壁、方壳电池的盖板形成泄爆通道，所述泄爆通道与方壳电池的泄爆口连通。
  43. 根据权利要求42所述的电池组，其特征在于，所述泄爆板为U型泄爆板或平板型泄爆板，所述U型泄爆板的侧壁分别嵌入第一侧和第二侧导电块的顶端卡槽内形成泄爆通道，或者所述平板型泄爆板分别嵌入第一侧和第二侧导电块的侧壁卡槽内形成泄爆通道，所述导电块与方壳电池的正极柱、负极柱通过焊接实现电连接，所述导电板与导电块或安装块通过螺栓实现电连接。
  44. 一种电性转接件，其特征在于,包括汇流板和极柱；所述汇流板上设置有多个第一插槽，用于供电池组中每个软包电芯的极耳穿过，并与所述汇流板接触后电连接；所述极柱设置在汇流板的端面上，且与汇流板一体设置，所述极柱上设置有用于安装传热管的通槽。
  45. 根据权利要求44所述的电性转接件，其特征在于,所述第一插槽为开口槽。
  46. 根据权利要求45所述的电性转接件，其特征在于,多个第一插槽平行设置在汇流板的第一区域，所述极柱设置在汇流板的第二区域，所述第一区域和第二区域为沿汇流板长度方向上分布的两个区域，或者所述第一区域和第二区域为沿汇流板宽度方向上分布两个区域。
  47. 一种上盖组件，其特征在于，包括盖板和两个权利要求44至46任一项所述的电性转接件；所述盖板上设置有至少两个通孔；所述电性转接件的极柱穿过通孔，且盖板与电性转接件之间绝缘设置。
  48. 根据权利要求47所述的上盖组件，其特征在于,还包括设置在汇流板与电池组之间的绝缘支撑，所述绝缘支撑上设置有供电池组中每个软包电芯的极耳穿过的多个第二插槽。
  49. 根据权利要求48所述的上盖组件，其特征在于,所述盖板和汇流板之间设置有绝缘夹板，所述绝缘夹板上设置有定位柱，所述绝缘支撑上设置有与定位柱配合的定位孔，所述盖板的通孔内设置有密封橡胶环，用于对极柱与盖板的连接处进行密封，所述极柱位于盖板的外侧还套装有焊接环，所述焊接环与极柱焊接，同时对密封橡胶环进行压紧。
  50. 一种电池组，其特征在于,包括多个软包电芯和权利要求47至49任一项所述的上盖组件，所述软包电芯的正极耳和负极耳分别穿过两个汇流板的第一插槽后折弯，并与两个汇流板分别焊接。
PCT/CN2023/113497 2022-09-14 2023-08-17 极柱、上盖组件、电性转接件、单体电池及电池组 Ceased WO2024055802A1 (zh)

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