WO2023130262A1 - 电池组以及制备电池组的方法 - Google Patents

电池组以及制备电池组的方法 Download PDF

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Publication number
WO2023130262A1
WO2023130262A1 PCT/CN2022/070321 CN2022070321W WO2023130262A1 WO 2023130262 A1 WO2023130262 A1 WO 2023130262A1 CN 2022070321 W CN2022070321 W CN 2022070321W WO 2023130262 A1 WO2023130262 A1 WO 2023130262A1
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WO
WIPO (PCT)
Prior art keywords
structural member
cell
battery
battery pack
along
Prior art date
Application number
PCT/CN2022/070321
Other languages
English (en)
French (fr)
Inventor
王鑫
吴明杰
Original Assignee
东莞新能安科技有限公司
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Publication date
Application filed by 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Priority to PCT/CN2022/070321 priority Critical patent/WO2023130262A1/zh
Publication of WO2023130262A1 publication Critical patent/WO2023130262A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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 embodiments of the present application relate to the technical field of energy storage, and in particular to a battery pack and a method for preparing the battery pack.
  • a battery cell is a device that converts external energy into electrical energy and stores it inside, so as to supply power to external electrical equipment (such as portable electronic equipment, etc.) when needed.
  • batteries are widely used in electrical equipment such as drones, mobile phones, tablets, and laptops.
  • a plurality of battery cells are stacked to form a battery pack, and circuit boards, brackets, etc. are added to form a battery pack for use by electrical equipment.
  • the applicant of the present application found that when multiple battery cells are stacked to form a battery pack, when the battery pack is subjected to external force, there will be collisions between the circuit board, bracket, etc., and the battery cells, so that the circuit board , brackets or batteries are damaged.
  • the embodiment of the present application aims to provide a battery pack and a method for preparing the battery pack, so as to solve or partially solve the collision between the first structural member and the battery cell in the battery pack in the prior art, so that the first structural member Or the problem of battery damage.
  • a battery pack including a battery assembly, a first structural member, and a second structural member.
  • the battery assembly includes several cells stacked along the first direction, each cell includes an electrode assembly, a cell casing and an electrode terminal, the electrode terminal is connected to the electrode assembly and extends out of the cell casing from the inside of the cell casing body, and the electrode assembly is set in the cell casing.
  • the first structural member overlaps with the cell housing, and the second direction is perpendicular to the first direction.
  • several cells include the first cell and the second cell.
  • the first structural member is oppositely provided with a first surface and a second surface, the first surface faces the battery case, and the second structural member at least satisfies one of the following conditions: (a1), the second structural member is arranged on the first The first surface of a structural member, (b1), the second structural member is arranged on the battery case of the first electric core, (c1), the second structural member is arranged on the second electric core battery case.
  • the second structural member buffers the battery pack, reducing the force on the battery assembly or the first structural member, and reducing the damage of the battery assembly or the first structural member due to collision.
  • the second structural member includes an insulating material, and the Shore hardness C of the second structural member is between 65-90.
  • the second structural member includes an insulating material, and the modulus of elasticity of the second structural member is in the range of 0.5-10Mpa.
  • the second structural member includes foam.
  • the foam includes ethylene vinyl acetate copolymer.
  • the expansion ratio of the foam is 2-8 times, and/or, the density of the foam is 0.1-0.5 g/m 3 .
  • the second structural member includes insulating material, and the second structural member is in a compressed state.
  • the second structural member is located between the electrode terminal of the first battery cell and the electrode terminal of the second battery cell.
  • the electrode terminals of each cell include a positive terminal and a negative terminal.
  • the positive terminal is connected to the electrode assembly and extends out of the cell casing from the inside of the cell casing
  • the negative terminal is connected to the electrode assembly and extends out of the cell casing from the inside of the cell casing, along the third direction
  • the positive electrode The terminal and the negative terminal are arranged separately, wherein the third direction is perpendicular to the first direction and the second direction, and in addition, along the first direction, the second structural member is located at the first positive terminal of the first cell and the second cell of the second cell. between the two negative terminals.
  • the first negative terminal of the first cell is connected to the second positive terminal of the second cell, and along the third direction, the second structural member is separated from the second positive terminal of the second cell It is provided that the second structural member is separated from the first negative terminal of the first cell.
  • the width of the first cell is w
  • the width of the second structure is w1
  • the ratio of w1 to w is between 1/3 and 3/5.
  • the distance between the second structural member and the second positive terminal of the second cell is 3-5 mm.
  • the first positive terminal of the first cell is separated from the second structural member
  • the second negative terminal of the second cell is separated from the second structural member Separate settings.
  • the battery pack further includes a first conductive part, one end of the first conductive part is connected to the first structural part, and the other end of the first conductive part is connected to the first At least one of the negative terminal and the second positive terminal of the second cell.
  • the first positive terminal of the first cell includes a first positive connection portion extending out of the cell case of the first cell, and along the first direction, the second structural member is connected to the first positive terminal.
  • the connection part is arranged separately, the second negative terminal of the second cell includes a second negative connection part extending out of the cell casing of the second cell, and along the first direction, the second structural member is separated from the second negative connection part .
  • each cell also includes an internal electrode terminal located in the cell casing, one end of the internal electrode terminal is connected to the electrode terminal, the other end of the internal electrode terminal is connected to the electrode assembly, and the other end of the internal electrode terminal is connected to the second electrode assembly.
  • the second structural member covers the connection area where the inner electrode terminal is connected to the electrode terminal.
  • the battery case includes a first part that overlaps with the electrode assembly when viewed along a first direction, and a second part extending from the first part, and the electrode terminals extend out of the second part from the second part.
  • the core housing, along the second direction, the second part is at least partly located between the first structural member and the first part, and along the first direction, the second structural member is located between the second part of the first electric core and the second electric core between the second part of .
  • the distance between the second structural member and the second portion of the first cell ranges from 0.5 to 2 millimeters.
  • the second structural member is disposed separately from the second part of the first battery cell.
  • the second structural member is configured on the first part of the first battery cell.
  • the second structural member is fixed to the first part of the first battery core.
  • the second structural component is bonded to the first surface of the first structural component.
  • a recess is provided on the first surface of the first structural member, and the second structural member is partially fixed to the recess.
  • the battery cells further include a third battery cell, the third battery cell is adjacent to the first battery cell, the third battery cell is located on the side of the first battery cell away from the second battery cell, and the battery The group also includes a third structural member. Viewed along the second direction, the first structural member overlaps with the battery case of the third battery cell.
  • the third structural member at least satisfies one of the following conditions: (a2), the third The structural member is arranged on the first surface of the first structural member, (b2), the third structural member is arranged on the battery case of the first battery cell, (c2), the second structural member is arranged on the battery cell of the third battery cell case.
  • the third structural member is located between the electrode terminal of the first battery cell and the electrode terminal of the third battery cell.
  • the second part of each cell case is connected to the first surface of the first part of the cell case, and along the second direction, the first surface of the first structural member is connected to the first surface of the first cell
  • the first surface of the core is oppositely arranged.
  • the second structural member is arranged on the cell casing, the second structural member is arranged on the first surface.
  • the third structural member is arranged on the electric core casing, the third structural member is arranged on the first surface. surface.
  • the first surface includes a first area and a second area, the first area and the second area are located on both sides of the second part along the first direction, the first area of the first cell
  • the two cells are adjacent, the second area of the first cell is adjacent to the third cell, along the direction opposite to the second direction, the projected part of the second structure is located in the first area of the first cell, and the second The projected portion of the structural member is located in the second area of the second cell, the projected portion of the third structural member is located in the second area of the first cell, and the projected portion of the third structural member is located in the first area of the third cell.
  • the third structural member is located between the second portion of the first cell and the second portion of the third cell.
  • the third structural component is disposed separately from the second structural component.
  • the battery pack includes a battery casing, the battery casing is provided with a first space, the battery assembly and the first structural member are arranged in the first space, and the battery casing extends toward the first space with a first protrusion. part and the second protruding part, the first protruding part and the second protruding part are arranged oppositely, one end of the first structural part is set on the surface of the first protruding part far away from the battery case, and the other end of the first structural part is set on the second protruding part The two protrusions are far away from a surface of the battery case.
  • a method for preparing a battery pack includes: providing a battery assembly, the battery assembly includes a plurality of battery cells stacked in sequence along a first direction, each of the battery cells
  • the core includes an electrode assembly, a cell casing and an electrode terminal, the electrode terminal is connected to the electrode assembly and extends out of the cell casing from the inside of the cell casing, and the electrode assembly is arranged on the cell
  • the plurality of battery cells include a first battery cell and a second battery cell, wherein the first battery cell and the second battery cell are adjacent to each other.
  • a first structural member and a second structural member are provided.
  • the first structural member is oppositely provided with a first surface and a second surface, and the first surface is used to face the cell case.
  • the second structural component is fixed to the first surface of the first structural component. Moving the first structural member in a direction opposite to the second direction until the first structural member is connected to the electrode assembly.
  • the embodiment of the present application is provided with a battery assembly, a first structural member and a second structural member.
  • the battery assembly includes several battery cells stacked along the first direction, and each battery cell includes an electrode assembly, a battery cell casing, and an electrode terminal, and the electrode terminal is connected to the electrode assembly and extends out of the battery cell from the inside of the battery cell casing.
  • the core casing, the electrode assembly is arranged in the cell casing, viewed along the second direction, the first structural member overlaps with the cell casing, the second direction is perpendicular to the first direction, and several cells include adjacently arranged
  • the first structural member is provided with a first surface and a second surface opposite to each other, the first surface faces the battery cell casing, and the second structural member at least meets one of the following conditions: (a1), the second structural member is arranged on the first surface of the first structural member, (b1), the second structural member is arranged on the battery case of the first battery cell, (c1) .
  • the second structural member is configured in the battery case of the second battery cell. In this way, when the battery pack is subjected to an external force, the second structural member can act as a buffer to the battery pack, reducing the stress on the battery assembly or the first structural member, and reducing damage to the battery assembly or the first structural member due to collision.
  • FIG. 1 is a schematic diagram of one direction of the overall structure of the battery pack provided in Embodiment 1 of the present application;
  • Fig. 2 is a schematic diagram of one direction of the partial structure of the battery pack provided in Embodiment 1 of the present application;
  • Fig. 3 is a schematic diagram of an implementation of connecting the battery assembly to the second structural member provided in Embodiment 1 of the present application;
  • Fig. 4 is a schematic diagram of another direction of the battery pack provided in Embodiment 1 of the present application.
  • Fig. 5 is a schematic diagram of a cell provided in an embodiment of the present application.
  • Fig. 6 is a schematic diagram of the explosion of the battery cell provided by the embodiment of the present application.
  • Fig. 7 is an indication form of the enlarged view of part A2 in Fig. 3 provided by the embodiment of the present application;
  • Fig. 8 is a schematic diagram of another direction of the battery pack provided in Embodiment 1 of the present application.
  • Fig. 9 is a kind of marking form of the enlarged view of the structure at A place in Fig. 8;
  • Fig. 10 is a schematic structural view of the first structural member of the battery pack provided in Embodiment 1 of the present application;
  • Fig. 11 is an enlarged view of part A1 in Fig. 2 provided by the embodiment of the present application;
  • Fig. 12 is another labeling form of the enlarged view of part A2 in Fig. 3 provided by the embodiment of the present application;
  • Fig. 13 is a schematic diagram of another implementation of connecting the battery assembly to the second structural member provided in Embodiment 1 of the present application;
  • Fig. 14 is a partial schematic diagram of the cell of the present application.
  • Fig. 15 is a schematic diagram of an implementation of connecting the battery assembly to the second structural member provided in Embodiment 2 of the present application;
  • Fig. 16 is a schematic diagram of a battery pack provided in Embodiment 2 of the present application.
  • Fig. 17 is a marked form of the enlarged view of part A3 in Fig. 15 provided by the embodiment of the present application;
  • Fig. 18 is another labeling form of the enlarged view of part A3 in Fig. 15 provided by the embodiment of the present application;
  • Fig. 19 is a schematic diagram of another implementation of connecting the battery assembly to the second structural member provided in Embodiment 2 of the present application;
  • Fig. 20 is a schematic diagram of yet another implementation of connecting the battery assembly to the second structural member provided in Embodiment 2 of the present application;
  • Fig. 21 is a schematic diagram of a battery pack provided by an embodiment of the present application.
  • Fig. 22 is an exploded schematic diagram of the battery pack provided by the embodiment of the present application.
  • Fig. 23 is a cross-sectional view along the line P-P in Fig. 21 provided by the embodiment of the present application;
  • Fig. 24 is a schematic flow chart for preparing a battery pack provided in Embodiment 3 of the present application.
  • Fig. 25 is a schematic diagram of a process stage for preparing a battery pack provided in Embodiment 3 of the present application.
  • Fig. 26 is a schematic diagram of yet another process stage for preparing a battery pack provided in Embodiment 3 of the present application.
  • Fig. 27 is a schematic diagram of another process stage for preparing a battery pack provided in Example 3 of the present application.
  • Fig. 28 is a schematic flow chart for preparing a battery pack provided in Example 4 of the present application.
  • Fig. 29 is a schematic diagram of a process stage for preparing a battery pack provided in Example 4 of the present application.
  • Fig. 30 is a schematic diagram of yet another process stage for preparing a battery pack provided in Example 4 of the present application.
  • Fig. 31 is a schematic diagram of another process stage for preparing a battery pack provided in Example 4 of the present application.
  • Fig. 32 is a schematic flow chart for preparing a battery pack provided in Example 5 of the present application.
  • Embodiment 1 provides an implementation of a battery pack 1000 , referring to FIGS. 1-4 , the battery pack 1000 includes a battery assembly 100 , a first structural member 200 and a second structural member 300 .
  • the second structural member 300 is disposed between the battery assembly 100 and the first structural member 200 .
  • the second structural member 300 buffers the battery pack 1000, reducing the size of the battery pack 100 or the first structural member 200. force, and reduce damage to the battery assembly 100 or the first structural member 200 due to collision.
  • the second structural member 300 is opposite to the first structural member 200 .
  • the first structural member 200 overlaps with the battery assembly 100, wherein the second direction L2 is the direction in which the second structural member 300 and the first structural member 200 are arranged oppositely, and the second direction L2 is perpendicular to the first structure 200 pieces.
  • the first structural member 200 includes a first surface 201 and a second surface 202 oppositely disposed along the second direction L2 , and the first surface 201 faces the battery assembly 100 .
  • the second structural member 300 includes insulating material, and the Shore hardness C of the second structural member 300 is between 65-90. In some embodiments, the second structural member 300 includes an insulating material, and the second structural member 300 is in a compressed state. The second structural member 300 includes insulating material, and the elastic modulus of the second structural member 300 is in the range of 0.5-10Mpa. In some embodiments, the second structural member 300 includes foam. Optionally, the foam includes ethylene vinyl acetate copolymer. Optionally, the expansion ratio of the foam is 2-8 times. Optionally, the density of the foam is 0.1-0.5g/m 3 .
  • the battery assembly 100 includes a plurality of battery cells 10 stacked along the first direction L1 .
  • the first direction L1 is perpendicular to the second direction L2.
  • Each cell 10 includes an electrode assembly 101, a cell casing 102, and an electrode terminal 103.
  • the electrode terminal 103 includes two terminals 1031 and 1032 with opposite polarities.
  • 1031 is a positive terminal and 1032 is a negative terminal.
  • 1031 may be a negative terminal
  • 1032 may be a positive terminal.
  • the material of the positive terminal may be but not limited to aluminum
  • the material of the negative terminal may be but not limited to nickel.
  • the electrode assembly 101 is accommodated in the cell casing 102, the positive terminal 1031 is connected to the electrode assembly 101 and extends out of the cell casing 102 from the inside of the cell casing 102, and the negative terminal 1032 is connected to the electrode assembly 101 and extends from the cell casing 102.
  • the inside of 102 extends out of the battery case 102 .
  • the battery case 102 includes a first portion 1021 overlapping with the electrode assembly when viewed along the first direction L1, and a second portion 1022 extending from the first portion 1021.
  • the first part 1021 is used for accommodating the electrode assembly 101 .
  • Both the positive terminal 1031 and the negative terminal 1032 extend from the second portion 1022 out of the battery case 102 .
  • the electrode assembly 101 includes a wound or stacked structure formed by a positive electrode sheet, a negative electrode sheet and a separator.
  • the cell casing 102 includes a first casing 102a and a second casing 102b.
  • the first shell 102a is connected to the second shell 102b, and the first shell 102a and the second shell 102b can be folded along the joint position, so that the first shell 102a and the second shell 102b overlap to form the first part 1021.
  • the peripheral side of the first housing 102a extends outward to form a first zone 102a1
  • the peripheral side of the second housing 102b extends outward to form a second zone 102b1.
  • the first shell 102 a and the second shell 102 b are folded along their connection positions, the first area 102 a 1 and the second area 102 b 1 are overlapped and sealed to form the second part 1022 .
  • Both the positive terminal 1031 and the negative terminal 1032 protrude from the battery case 102 from the side of the second part 1022 opposite to the connection position.
  • the positive terminal 1031 and the negative terminal 1032 extend out of the battery case 102 from the same end of the battery 10 .
  • the positive terminal 1031 and the negative terminal 1032 are arranged separately along the third direction L3, wherein the third direction L3 is perpendicular to the first direction L1, and the third direction L3 is perpendicular to the second direction L2.
  • the positive terminal 1031 and the negative terminal 1032 can respectively extend out of the battery case 102 from opposite ends of the battery 10, for example, along the second direction L2, the positive terminal 1031 and the negative terminal 1032 extend from the battery The two opposite ends of 10 respectively extend out of the battery case 102 .
  • the battery case 102 includes an aluminum-plastic film.
  • the battery cell 10 includes a pouch battery cell.
  • the first housing 102a and the second housing 102b may be two separate housings. Viewed along the second direction L2 , the first structural member 200 overlaps with the battery case 102 .
  • the battery cells 10 include a first battery cell 11 and a second battery cell 12 arranged adjacently.
  • the first battery cell 11 and the second battery cell 12 are any two battery cells arranged adjacently among the several battery cells 10 .
  • the first cell 11 includes a first positive terminal 1031a and a first negative terminal 1032a
  • the second cell 12 includes a second positive terminal 1031b and a second negative terminal 1032b.
  • the first positive terminal 1031a includes a first positive connecting portion 10311 located outside the battery case 102 of the first battery 11
  • the first negative terminal 1032a includes a The first negative connection part 10411 outside the battery case 102
  • the second positive terminal 1031b includes a second positive connection portion 10321 located outside the cell casing 102 of the second cell 12
  • the second negative terminal 1032b includes a second negative electrode positioned outside the cell casing 102 of the second cell 12 Connection part 10421.
  • the first positive connection part 10311 and the second negative connection part 10421 are disposed separately, and the second structural member 300 is disposed between the first positive connection part 10311 and the second negative connection part 10421 .
  • the first positive connection part 10311 is connected to the second negative connection part 10421
  • the first negative connection part 10411 is connected to the second positive connection part 10321
  • a series connection is formed between adjacent cells.
  • the first negative connection portion 10411 of the first cell 11 overlaps with the second positive connection portion 10321 of the second cell 12 .
  • the first structural member 200 includes a circuit board, which may be a Battery Management System (BMS) board, and the BMS board may be used to manage charging and discharging of the battery cells. At least one of the first negative terminal 1032 a of the first cell 11 and the second positive terminal 1031 b of the second cell 12 is electrically connected to the first structural member 200 .
  • BMS Battery Management System
  • the first positive connection portion 10311 of the first positive terminal 1031a and the first negative connection portion 10411 of the first negative terminal 1032a are located between the first structural member 200 and the battery case 10, and the second positive terminal
  • the second positive connection portion 10321 of 1031 b and the second negative connection portion 10421 of the second negative terminal 1032 b are located between the first structural member 200 and the battery case 10 .
  • At least one of the first positive terminal 1031 a of the first battery cell 11 and the second negative terminal 1032 b of another second battery cell 12 is electrically connected to the first structural component 200 .
  • the first positive terminal 1031a is welded to the first structural member 200 .
  • the second negative terminal 1032b is welded to the first structural member 200 .
  • the battery pack 1000 includes a first conductive member 400, one end of the first conductive member 400 is connected to the first structural member 200, and the other end of the first conductive member 400 is connected to At least one of the first negative terminal 1032 a of the first cell 11 and the second positive terminal 1031 b of the second cell 12 are connected to each other.
  • the first negative terminal 1032a of the first cell 11 and the second positive terminal 1031b of the second cell 12 include a joint 103a connected to each other, optional.
  • the other end of the first conductive member 400 is connected to the connecting portion 103a.
  • the second structural member 300 satisfies at least one of the following conditions: (a1), the second structural member 300 is arranged on the first surface 201 of the first structural member 200; (b1), the second structural member 300 is arranged on the first electric core 11 (c1), the second structure 300 is arranged on the battery case 102 of the second battery 12, which is beneficial for the second structure 300 to transmit the external force received by the battery case 102 to the second structure
  • a structural member 200 enhances the protection of the battery case 102 .
  • the second structural member 300 is arranged on the first surface 201 of the first structural member 200 , optionally, the second structural member 300 is fixed on the first surface 201 of the first structural member 200 .
  • the first surface 201 of the first structural member 200 is provided with a recess 200a, and part of the second structural member 300 is fixed to the recess 200a.
  • the second structural member 300 is bonded to the first surface 201 of the first structural member 200 by using the adhesive layer 700 .
  • the adhesive layer 700 can be firstly arranged on the second structural member 300, and then the second structural member 300 is bonded to the first surface 201 of the first structural member 200, and the adhesive layer 700 can also be first arranged on the On the first surface 201 of the first structural member 200 , the second structural member 300 is bonded to the adhesive layer 700 afterwards, and the specific sequence of steps in the manufacturing process of the adhesive layer 700 is not specifically limited in this application.
  • the second structural member 300 When the second structural member 300 is disposed on the battery cell casing 102 of the first battery cell 11 , optionally, the second structural member 300 is bonded to the battery cell casing 102 of the first battery cell 11 .
  • the battery case 102 includes the first part 1021 and the second part 1022
  • the second structure 300 is fixed to the first part 1021 of the first battery 11, further, the second structure 300 is fixed to the The direction L2 observes the overlapping portion of the first portion 1021 and the first structural member 200 .
  • the second structural member 300 when the second structural member 300 is disposed on the battery case 102 of the second battery cell 12 , optionally, the second structural member 300 is bonded to the battery case 102 of the second battery cell 12 .
  • the cell casing 102 includes a first portion 1021 and a second portion 1022 , the second structural member 300 is fixed to the first portion 1021 of the second cell 12 . Further, the second structural member 300 is fixed on the overlapping portion of the first portion 1021 and the first structural member 200 viewed along the second direction L2.
  • the second structural member 300 is bonded to the first surface 201 of the first structural member 200 , and the second structural member 300 is also bonded to the battery case 102 of the first battery cell 11 at the same time.
  • the connection stability between the second structural member 300 and the first surface 201 and the battery case 102 of the first battery is further enhanced, which can simplify the process production and facilitate automatic production.
  • the second structural member 300 is fixed to the first surface 201 of the first structural member 200 , and the second structural member 300 is also fixed to the battery case 102 of the second battery cell 12 at the same time.
  • the cell casing 102 includes the first part 1021 and the second part 1022
  • the second structural member 300 is fixed to the first part 1021 of the second cell 12
  • the second structural member 300 is fixed to the second part along the second The direction L2 observes the overlapping portion of the first portion 1021 and the first structural component 200 .
  • Further strengthening the connection stability between the second structural member 300 and the battery case 102 of the second battery 12 can simplify the process and production, and is beneficial to automatic production.
  • the battery case 102 When the battery case 102 includes a first part 1021 and a second part 1022 , the second part 1022 is connected to the first surface 102 c of the first part 1021 .
  • the first surface 201 of the first structural member 200 is arranged with the first surface pair 102c.
  • the second structural component 300 When the second structural component 300 is disposed on the battery case 102 , the second structural component 300 is disposed on the first surface 102c.
  • the second structural member 300 is configured on the first surface 102c of the first cell 11 .
  • the second structural member 300 is configured on the first surface 102c of the second battery cell 12 .
  • the first surface 102c of the battery case 102 includes a first region 102c1 and a second region 102c2, and along the first direction L1, the first region 102c1 and the second region 102c2 are located on both sides of the second portion 1022,
  • the first region 102c1 of the first cell 11 is adjacent to the second region 102c2 of the second cell 12, and along the direction L2 ' opposite to the second direction L2, the projected portion of the second structural member 300 is located on the first cell 11
  • the projected part of the second structural member 300 is located in the second area 102c2 of the second cell 12 .
  • the second structural member 300 is located between the electrode terminal 103 of the first cell 11 and the electrode terminal 103 of the second cell 12 . Further, along the first direction L1 , the second structural member 300 is located between the first positive terminal 1031 a of the first cell 11 and the second negative terminal 1032 b of the second cell 12 .
  • the first positive terminal 1031 a of the first cell 11 is separated from the second structural member 300 .
  • the second negative terminal 1032 b of the second battery cell 12 is disposed separately from the second structural member 300 .
  • the second structural member 300 does not press the first positive terminal 1031a of the first cell 11, and the second structural member 300 does not press the second negative terminal 1032b of the second cell 12, which is beneficial to protect the electrode terminal 103 .
  • the first positive terminal 1031a of the first cell 11 includes a first positive connection portion 10311 extending out of the cell housing 102 of the first cell 11
  • the second terminal of the second cell 12 The negative terminal 1032b includes a second negative connection portion 10421 extending out of the cell case 102 of the second cell 12.
  • the second structural member 300 is separated from the first positive connection portion 10311.
  • the second structural member 300 is provided separately from the second negative connection part 10421.
  • the battery case 102 includes the first part 1021 and the second part 1022, along the second direction L2
  • the second part 1022 is at least partially located between the first structural member 200 and the first part 1021, along the first direction L1
  • the second structural member 300 is located between the second portion 1022 of the first cell 11 and the second portion 1022 of the second cell 12 .
  • the second structure 300 is separated from the second part 1022 of the first battery 11, and the second structure 300 is separated from the second part 1022 of the first battery 11.
  • the distance d1 between them ranges from 0.5 mm to 2 mm. It is beneficial to protect the electrode terminals 103 of the first electric core 11 and facilitates the assembly of the second structural member 300 .
  • the distance d1 between the second structural member 300 and the second portion 1022 of the first cell 11 ranges from 0.8 mm to 1.5 mm. It is beneficial to further protect the electrode terminals 103 of the first battery cell 11 and facilitate assembly.
  • the second structural member 300 is separated from the second part 1022 of the second electric core 12, and the second structural member 300 and the second part 1022 of the second electric core 12
  • the distance d2 between them ranges from 0.5 to 2 mm. It is beneficial to protect the electrode terminals 103 of the second electric core 12 and facilitates the assembly of the second structural member 300 .
  • the distance d1 between the second structural member 300 and the second portion 1022 of the second cell 12 ranges from 0.8 mm to 1.5 mm. It is beneficial to further protect the electrode terminals 103 of the second electric core 12 and facilitate assembly.
  • the connection 103a between the first positive terminal 1031a of the first cell 11 and the second negative terminal 1032b of another second cell 12 is There is a gap 103s between the first structural members 200, and when the second structural member 300 is arranged in the battery case 102 of the first battery cell 11 and/or the second battery cell 12, along the second direction L2, the second structural member 300 It can extend to the gap 103s, and when the first structural member 200 is subjected to an external force, the second structural member 300 can bear the external force, reducing damage to the battery cell 10 .
  • the first cell The first positive electrode connection portion 10311 of 11 is located between the first structural member 200 and the first portion 1021 of the first cell 11 .
  • the second structural member 300 is separated from the first negative connection part 10411.
  • the second structural member 300 does not press the first negative connection part 10411.
  • the first structural member 200 can be reduced.
  • the member 200 or the second structural member 300 is in contact with the first negative connection part 10411 to reduce damage to the battery cell 10 .
  • the width of the first cell 11 when viewed along the direction L2' opposite to the second direction L2, along the third direction L3, the width of the first cell 11 is w, and the width of the second structural member 300 is w1, w1 and w.
  • the ratio is between 1/3 and 3/5. It is beneficial to improve the protection of the battery cell 10 .
  • the ratio of w1 to w is between 2/5 and 1/2.
  • FIG. 12-FIG. 14 When viewed along the direction L2' opposite to the second direction L2, along the third direction L3, the second structural member 300 and the second part of the second cell 12
  • the distance d3 between the positive connecting parts 10321 is 2-6 mm. It is beneficial to further improve the protection of the battery cell 10 .
  • d3 is 3-5 mm.
  • the distance d4 between the second structural member 300 and the first negative connection portion 10411 of the first cell 11 is: 3-5mm. It is beneficial to further improve the protection of the battery cell 10 .
  • d4 is 3-5mm.
  • the cell 10 further includes an internal electrode terminal 105 located in the cell casing 102 , one end of the internal electrode terminal 105 is connected to the electrode terminal 103 , and the other end of the internal electrode terminal 105 is connected to the electrode assembly 101 .
  • the second structure member 300 covers the connection region 1041 where the internal electrode terminal 105 is connected to the electrode terminal 103 .
  • the internal electrode terminal 105 includes a first internal electrode terminal (not shown in the figure) and a second internal electrode terminal.
  • One end of the first internal electrode terminal is connected to the electrode terminal 103 , and the other end of the first internal electrode terminal is connected to the electrode assembly 101 .
  • One end of the second internal electrode terminal is connected to the electrode terminal 103, and the other end of the second internal electrode terminal is connected to the electrode assembly 101.
  • the first internal electrode terminal is connected to the positive terminal 1031 .
  • the second internal electrode terminal is connected to the negative terminal 1032 .
  • the second structural member 300 when the battery pack 1000 is subjected to an external force, the second structural member 300 can undergo elastic deformation, and the connection area 1041 where the internal electrode terminal 105 is connected to the electrode terminal 103 can transmit the external force received by the battery cell 10 to the second structure.
  • the component 300 reduces damage to the battery cell 10 .
  • the battery pack 1000 includes a battery assembly 100 , the battery assembly 100 includes a plurality of battery cells 10 stacked along the first direction L1 , and the number of battery cells 10 also includes a third battery cell 13 .
  • the third cell 13 is adjacent to the first cell 11, the third cell 13 is located on the side of the first cell 11 away from the second cell 12, the first cell 11, the second cell 12 and the third cell
  • the cores 13 are stacked in the first direction L1.
  • the third battery cell 13 , the first battery cell 11 and the second battery cell 12 are any three adjacent battery cells among the plurality of battery cells 10 .
  • the third battery cell 13 is one of several battery cells 10 , and the structure and function of the third battery cell 13 can refer to the battery cell 10 in Embodiment 1, which will not be repeated here.
  • the battery pack 1000 also includes a third structural member 500 .
  • the third structural member 500 may have the same structure, function and material as the second structural member 300.
  • the first battery cell 11 and the second battery cell 12 are used as adjacent battery cells,
  • the first cell 11 and the third cell 13 are described as adjacent cells, wherein the structure, function and material of the third structural member 500 can refer to the structure of the second structural member 300 in the first embodiment, function and material.
  • the second structural member 300 includes foam
  • the third structural member 500 includes foam
  • the modulus of elasticity of the third structural member 500 may be different from that of the second structural member 300 .
  • the third structural member 500 is located between the electrode terminal 103 of the first cell 11 and the electrode terminal 103 of the third cell 13 .
  • the third structural component 500 is located between the first negative terminal 1032 a of the first cell 11 and the positive terminal 1031 of the third cell 13 .
  • the first negative terminal 1032a of the first cell 11 is separated from the third structural member 500 .
  • the positive terminal 1031 of the third cell 13 is separated from the third structural member 500 .
  • the third structural member 500 does not press the first negative terminal 1032a of the first cell 11, and the third structural member 500 does not press the positive terminal 1031 of the third cell 13, which is beneficial to protect the electrode terminal 103.
  • the third structural member 500 is separated from the second portion 1022 of the first cell 11, and the distance d5 between the third structural member 500 and the second portion 1022 of the first cell 11
  • the range is 0.5 to 2 mm. It is beneficial to further protect the electrode terminals 103 and facilitate the assembly of the third structural member 500 .
  • the distance d1 between the third structure member 500 and the second portion 1022 of the first cell 11 ranges from 0.8 mm to 1.5 mm.
  • the third structural component 500 overlaps with the battery case 102 of the third battery 13 .
  • the third structural member 500 satisfies at least one of the following conditions: (a2), the third structural member 500 is arranged on the first surface 201 of the first structural member 200; (b2), the third structural member 500 is arranged on the first cell 11 The cell case 102 of the cell; (c2), the second structural member 300 is arranged on the cell case 102 of the third cell 13 . It is beneficial for the third structural member 500 to transmit the external force received by the battery case 102 to the first structural member 200 , so as to improve the protection of the battery case 102 .
  • the third structural member 500 when the third structural member 500 is arranged on the first surface 201 of the first structural member 200 , optionally, the third structural member 500 is fixed on the first surface 201 of the first structural member 200 .
  • the first surface 201 of the first structural member 200 is provided with a recess 200a, and part of the third structural member 500 is fixed to the recess.
  • the third structural member 500 is bonded to the first surface 201 of the first structural member 200 by using an adhesive layer 700 . It should be noted that: during the processing, the adhesive layer 700 can be firstly disposed on the third structural member 500, and then the third structural member 500 is bonded to the first surface 201 of the first structural member 200.
  • the adhesive layer 700 It can also be arranged on the first surface 201 of the first structural member 200 first, and then the third structural member 500 is bonded to the adhesive layer 700. As for the specific sequence of steps in the process of the adhesive layer 700, this application does not make specific details. limited.
  • the third structural member 500 when the third structural member 500 is arranged on the battery cell casing 102 of the first battery cell 11 , optionally, the third structural member 500 is bonded to the battery cell casing 102 of the first battery cell 11 .
  • the battery case 102 includes the first part 1021 and the second part 1022
  • the third structural member 500 is fixed to the first part 1021 of the first battery 11
  • the third structural member 500 is fixed to the The overlapping portion of the first portion 1021 and the first structural member 200 is viewed from the two directions L2.
  • the third structural member 500 when the third structural member 500 is disposed on the battery cell casing 102 of the third battery cell 13 , optionally, the third structural member 500 is bonded to the battery cell casing 102 of the third battery cell 13 .
  • the battery case 102 includes the first part 1021 and the second part 1022
  • the third structure 500 is fixed to the first part 1021 of the third battery 13
  • the third structure 500 is fixed to the The direction L2 observes the overlapping portion of the first portion 1021 and the first structural component 200 .
  • the third structural member 500 can be arranged on the first surface 201 of the first structural member 200 , and the third structural member 500 can also be arranged on the battery case 102 of the first battery cell 11 . This setting further improves the stability of the connection between the third structural member 500 , the first surface 201 and the first battery cell 11 .
  • the third structural member 500 can be arranged on the first surface 201 of the first structural member 200 , and the third structural member 500 can also be arranged on the battery case 102 of the third battery cell 13 . This setting further improves the stability of the connection between the third structural member 500 , the first surface 201 and the third battery cell 13 .
  • the second structural member 300 is arranged on the first surface 102c of the first electric core 11, the second structural member 300 is arranged on the first surface 102c of the second electric core 12, and the third structural member 500 is arranged on the third On the first surface 102c of the battery cell 13 , the third structural component 500 is disposed on the first surface 102c of the first battery cell 11 .
  • the first region 102c1 of the first cell 11 is adjacent to the second region 102c2 of the second cell 12, and the second region 102c2 of the first cell 11 is adjacent to the first region of the third cell 13.
  • 102c1 adjacent to, along the direction opposite to the second direction L2 the projected part of the second structural member 300 is located in the first region 102c1 of the first cell 11, and the projected part of the second structural member 300 is located in the second region of the second cell 12.
  • the projected part of the third structural member 500 is located in the second area 102c2 of the first battery cell 11
  • the projected part of the third structural member 500 is located in the first area 102c1 of the third battery cell 13 .
  • the third structural member 500 and the second structural member 300 are disposed separately.
  • FIG. 15 viewed along the first direction L1 , there is an overlapping area 501 between the third structural member 500 and the second structural member 300 , which further improves the protection of the battery case 102 .
  • the third structural member 500 and the second structural member 300 are disposed separately.
  • a second structural member 300 is not arranged between every two adjacent battery cells 10 in the battery pack 1000 as shown in FIG. 11 .
  • one or two second structural members 300 are provided at one end of the battery assembly 100 along the first direction L1
  • one or two third structural members 500 are provided at one end of the battery assembly 100 along the first direction L1
  • the battery assembly 100 One or two second structural members 300 are disposed at the other end along the first direction L1
  • one or two third structural members 500 are disposed at the other end of the battery assembly 100 along the first direction L1.
  • the force of the first structural member 200 acting on the battery assembly 100 can be buffered by the second structural member 300 and the third structural member 500 at both ends of the battery assembly 100 along the first direction L1, so that the interaction between the first structural member 200 and the battery can be reduced.
  • the damage caused by the collision of the assembly 100 can reduce the number of the second structural member 300 and the third structural member 500 and reduce the production cost of the battery pack 1000 .
  • different numbers of second structural members 300 and third structural members 500 may be provided.
  • the battery pack 1000 also includes a battery case 600, and the battery case 600 is provided with a first space 600s.
  • the battery assembly 100, the first structural member 200 and the second structural member 300 are arranged A space 600s.
  • the battery assembly 100, the first structural component 200, the second structural component 300, and the third structural component 500 are disposed in the first space 600s.
  • the battery case 600 has a first convex portion 601 and a second convex portion 602 extending toward the first space 600s, and the first convex portion 601 and the second convex portion 602 are disposed opposite to each other.
  • first structural member 200 One end of the first structural member 200 is disposed on a surface of the first protrusion 601 away from the battery case 102 , and the other end of the first structural member 200 is disposed on a surface of the second protrusion 602 away from the battery case 102 .
  • the first protrusion 601 and the second protrusion 602 provide support for the first structural member 200 .
  • the first structural component 200 is bonded to the first protrusion 601 .
  • the first structural component 200 is bonded to the second protrusion 602 .
  • the connection between the first structural member 200 and the battery case 600 is strengthened.
  • the force received by the battery assembly 100 is transmitted to the battery case 600 through the first structural member 200 , further improving the protection of the cell case 102 .
  • the battery case 600 is also provided with several recessed parts 603, the number of the recessed parts 603 is the same as the number of the battery cells 10, and one battery cell 10 is arranged in a recessed part 603, passing through the recessed parts 603 can reduce the movement of the battery cell 10 in the battery case 600 .
  • Embodiment 3 provides a method for preparing a battery pack.
  • the method for preparing a battery pack provided in this embodiment includes the following steps:
  • Step S10a providing a battery assembly 100 .
  • the battery assembly 100 includes a plurality of battery cells 10 stacked along the first direction L1.
  • Each cell 10 includes an electrode assembly 101 , a cell casing 102 and an electrode terminal 103 .
  • the electrode assembly 101 is accommodated in the cell case 102
  • the electrode terminal 103 is connected to the electrode assembly 101 and extends out of the cell case 102 from the inside of the cell case 102 .
  • the plurality of battery cells 10 includes a first battery cell 11 and a second battery cell 12 arranged adjacently.
  • the first battery cell 11 and the second battery cell 12 are any two battery cells 10 arranged adjacently among the several battery cells 10 .
  • the specific structure and functions of the battery assembly 100 can refer to the first embodiment, and will not be repeated here.
  • Step S20a providing the first structural member 200 and the second structural member 300 .
  • the first structural member 200 includes a first surface 201 and a second surface 202 oppositely disposed along the second direction L2.
  • the first surface 201 faces the battery case 102.
  • the second direction L2 is perpendicular to the first direction L1.
  • the second direction L2 is perpendicular to the first structure member 200 .
  • Step S30 a fixing the second structural member 300 to the first surface 201 of the first structural member 200 .
  • the second structural member 300 is fixed to the first surface 201 of the first structural member 200 by bonding.
  • Step S40 a moving the first structural member 200 in a direction opposite to the second direction L2 until the first structural member 200 is connected to the battery assembly 100 .
  • the first structural member 200 is moved to the second structural member in the direction opposite to the second direction L2 300 is connected to the battery pack 10 .
  • the first structural member 200 is moved in the direction opposite to the second direction L2 until the first structural member 200 is connected to the battery case 102 of the first battery cell 11, and the first structural member 200 is connected to the second Moving in a direction opposite to the direction L2 until the first structural member 200 is connected to the cell case 102 of the second cell 12 .
  • the method for preparing a battery pack further includes coating the first structural member 200 with an adhesive on the side close to the battery assembly 100, and the first structural member 200 is bonded to the side of the first battery cell 11
  • the battery case 102 and/or the first structural member 200 are bonded to the battery case 102 of the second battery 12 .
  • an optional manner for connecting the first structural member 200 to the battery assembly 100 is to connect through the first conductive member 400 .
  • one end of the first conductive member 400 is connected to the second surface of the first structural member 200, and the other end of the first conductive member 400 is bent toward the battery case 102 and then connected to the interconnected first battery cells.
  • At least one of the negative terminal of 11 and the positive terminal of the second cell 12 forms the connection 103a of the positive terminal and/or the negative terminal.
  • an optional way of connecting the first structural member 200 to the battery assembly 100 is through a second conductive member.
  • one end of the second conductive member is connected to the second surface of the first structural member 200, and the other end of the second conductive member is bent toward the cell casing 102 and then connected to the interconnected first cell 11.
  • At least one of the first positive terminal 1031 a and the second negative terminal 1032 b of the second cell 12 forms a connection 103 a of the positive terminal and/or the negative terminal.
  • Step S50a disposing the battery assembly 100 and the first structural member 200 in the first space 600s.
  • step S50a further includes disposing one end of the first structural member 200 on a surface of the first protrusion 601 away from the battery case 102 , and disposing the other end of the first structural member 200 on the second protrusion 602 A surface away from the battery case 102 .
  • the first protrusion 601 and the second protrusion 602 provide support for the first structural member 200 .
  • step S50a further includes coating the first protrusion 601 with an adhesive, and one end of the first structural member 200 is bonded to the first protrusion 601 .
  • step S50 a further includes coating the second protrusion 602 with an adhesive, and one end of the first structural member 200 is bonded to the second protrusion 602 .
  • step S50 a an adhesive is coated on the first structural member 200 , and one end of the first structural member 200 is bonded to the first protrusion 601 .
  • step S50 a an adhesive is coated on the first structural member 200 , and one end of the first structural member 200 is bonded to the second protrusion 602 .
  • the method for preparing the battery pack provided in Example 3 is suitable for preparing any battery pack provided in Example 1 above, and the technical solution constituted is also within the protection scope of the present application.
  • step S10a further includes providing a third battery cell 13
  • step S20a further includes providing a third structural member 500
  • step S30a includes fixing the third structural member 500 to the first surface 201 of the first structural member 200 .
  • the assembly method of the third structural member 500 , the first structural member 200 and the battery assembly 100 can refer to the assembly method of the second structural member 300 , the first structural member 200 and the battery assembly 100 in the second embodiment, and will not be repeated here.
  • the first structural member 200 is placed along the direction L2 opposite to the second direction.
  • the manufacturing process of the battery pack method provided in this application is relatively simple.
  • the size restriction on the second structure member 300 is reduced.
  • Embodiment 4 provides a method for preparing a battery pack.
  • the method for preparing a battery pack provided in this embodiment includes the following steps:
  • Step S10b providing a battery assembly.
  • the battery assembly 100 includes a plurality of battery cells 10 stacked along the first direction L1.
  • the plurality of battery cells 10 includes a first battery cell 11 and a second battery cell 12 arranged adjacently.
  • the first battery cell 11 and the second battery cell 12 are any two battery cells 10 arranged adjacently among the several battery cells 10 .
  • Step S20b providing the first structural member 200 and the second structural member 300 .
  • step S10b reference may be made to step S10a in Embodiment 3, which will not be repeated here.
  • step S20b reference may be made to step S20a in Embodiment 3, which will not be repeated here.
  • Step S30b fixing the second structural member 300 to the casing of the battery cell 10 of the first battery cell 11 .
  • the second structural member 300 is fixed to the battery case 102 of the first battery 11 by bonding.
  • Step S40b moving the first structural member 200 along the direction L2' opposite to the second direction L2 until the first structural member 200 is connected with the battery assembly 100.
  • the method for preparing the battery pack provided in the present application is suitable for preparing any battery pack provided in the first embodiment above, and the technical solutions thereof are also within the protection scope of the present application.
  • step S40b includes moving the second structural member 300 to the concave portion 200a of the first structural member 200 .
  • step S50b the battery assembly 100 and the first structural member 200 are disposed in the first space 600s.
  • step S50b further includes disposing one end of the first structural member 200 on a surface of the first convex portion 601 away from the battery case 102, and disposing the other end of the first structural member 200 on a surface of the second convex portion 602 away from the electrical core case 102.
  • the core shell 102 has a surface.
  • the first protrusion 601 and the second protrusion 602 provide support for the first structural member 200 .
  • step S50b further includes coating the first protrusion 601 with an adhesive, and one end of the first structural member 200 is bonded to the first protrusion 601 .
  • step S50b further includes coating the second protruding portion 602 with an adhesive, and one end of the first structural member 200 is bonded to the second protruding portion 602 .
  • step S50b an adhesive is coated on the first structural member 200 , and one end of the first structural member 200 is bonded to the first protrusion 601 .
  • step S50b adhesive is coated on the first structural member 200 , and one end of a structural member 200 is bonded to the second protrusion 602 .
  • step S10b further includes providing a third battery cell 13
  • step S20b further includes a third structural member 500
  • step S30b includes fixing the third structural member 500 to the casing of the first battery cell 11 .
  • the assembly method of the third structural member 500, the first structural member 200 and the battery assembly 100 in the embodiment can refer to the assembly method of the second structural member 300, the first structural member 200 and the battery assembly 100 in the third embodiment, I won't repeat them here.
  • the first structural member 200 is placed in the direction opposite to the second direction.
  • the manufacturing process of the battery pack method provided in the present application is relatively simple.
  • the size restriction on the second structure member 300 is reduced.
  • Embodiment 5 provides a method for preparing a battery pack.
  • the method for preparing a battery pack provided in Embodiment 5 includes the following steps:
  • Step S10c providing a battery assembly 100 .
  • the battery assembly 100 includes a plurality of battery cells 10 stacked along the first direction L1.
  • the plurality of battery cells 10 includes a first battery cell 11 and a second battery cell 12 arranged adjacently.
  • the first battery cell 11 and the second battery cell 12 are any two battery cells 10 arranged adjacently among the several battery cells 10 .
  • Step S20c providing the first structural member 200 and the second structural member 300 .
  • step S10c reference may be made to step S10a in Embodiment 3, which will not be repeated here.
  • step S20c reference may be made to step S20a in Embodiment 3, which will not be repeated here.
  • Step S30c fixing the second structural member 300 to the cell case 102 of the second cell 12 .
  • step S30c please refer to Embodiment 6 and FIG. 29 , and details will not be repeated here.
  • the second structural component 300 is fixed to the battery case 102 of the second battery 12 by bonding.
  • Step S40c moving the first structural member 200 along the direction L2' opposite to the second direction L2 until the first structural member 200 is connected with the battery assembly 100.
  • the method for preparing the battery pack provided in Example 5 is applicable to the preparation of any battery pack provided in Example 1 above, and its technical solution is also within the protection scope of the present application.
  • step S40b includes moving the second structural member 300 to the concave portion 200a of the first structural member 200 .
  • step S50c the battery assembly 100 and the first structural member 200 are disposed in the first space 600s.
  • step S50c For the steps and embodiments of step S50c, reference may be made to Embodiment 4, which will not be repeated here.
  • the assembly method of the third structural member 500, the first structural member 200 and the battery assembly 100 in the embodiment can refer to the assembly method of the second structural member 300, the first structural member 200 and the battery assembly 100 in the fourth embodiment, I won't repeat them here.
  • the first structural member 200 is placed along the direction opposite to the second direction L2.
  • the manufacturing process of the battery pack method provided in the present application is relatively simple.
  • the size restriction on the second structure member 300 is reduced.

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Abstract

一种电池组（1000）以及制备电池组（1000）的方法，包括电池组件（100）、第一结构件（200）和第二结构件（300）。电池组件（100）包括若干沿第一方向（L1）叠置的电芯（10），每一电芯（10）均包括电芯壳体（102）、设于电芯壳体（102）内的电极组件（101）、电芯壳体（102）和电极端子（103），电极端子（103）连接于电极组件（101）且自电芯壳体（102）的内部延伸出，若干电芯（13）包括相邻设置的第一电芯（11）和第二电芯（12），第一结构件（200）沿第二方向（L2）相对设置有第一面（201）和第二面（202），第一面（201）面向电芯壳体（100），第二结构件（300）至少满足以下条件之一：第二结构件（300）配置于第一结构件（200）的第一面（201）、第二结构件（300）配置于第一电芯（11）的电芯壳体（102）、第二结构件（300）配置于第二电芯（12）的电芯壳体（102）。通过上述方式，能够减少电池组件（100）或第一结构件（200）因碰撞损坏。

Description

电池组以及制备电池组的方法 技术领域
本申请实施例涉及储能技术领域，尤其涉及一种电池组以及制备电池组的方法。
背景技术
电芯是一种将外界的能量转化为电能并储存于其内部，以在需要的时刻对外部用电设备(例如便携式电子设备等)进行供电的装置。目前，电芯广泛地运用于无人机、手机、平板、笔记本电脑等用电设备中。一般的，为了提高电芯的供电能力，将多个电芯堆叠，然后形成电池组并增加电路板、支架等形成电池组以供用电设备使用。
本申请的申请人在实现本申请的过程中，发现目前多个电芯堆叠形成电池组时，在电池组受到外力时，电路板、支架等与电芯之间会产生碰撞，从而使得电路板、支架或者电芯受损。
申请内容
本申请实施例旨在提供一种电池组以及制备电池组的方法，以解决或者部分地解决现有技术中电池组中的第一结构件与电芯之间产生碰撞，从而使得第一结构件或者电芯受损的问题。
根据本申请实施例的一个方面，提供了一种电池组，包括电池组件、第一结构件和第二结构件。电池组件包括若干沿第一方向叠置的电芯，每一电芯均包括电极组件、电芯壳体和电极端子，电极端子连接于电极组件且自电芯壳体的内部延伸出电芯壳体，电极组件设于电芯壳体内。其中，沿第二方向观察，第一结构件与电芯壳体存在重叠，第二方向与第一方向垂直，此外，若干电芯包括第一电芯和第二电芯，沿第二方向，第一结构件相对设置有第一面和第二面，第一面面向电芯壳体，第二结构件至少满足以下条件之一：(a1)、所述第二结构件配置于所述第一结构件的第一面，(b1)、所述第二结构件配置于所述第一电芯的电芯壳体，(c1)、所述第二结构件配置于所述第二电芯的电芯壳体。电池组受外力时，第二结构件对电池组进行缓冲，减小电池组件或者第一结构件受力，减少电池组件或者第一结构件因碰 撞受损。
在一种可选的方式中，所述第二结构件包括绝缘材料，所述第二结构件的邵氏硬度C在65-90之间。
在一种可选的方式中，所述第二结构件包括绝缘材料，所述第二结构件的弹性模量的范围为0.5-10Mpa。
在一种可选的方式中，所述第二结构件包括泡棉。
在一种可选的方式中，所述泡棉包括乙烯醋酸乙烯共聚物。
在一种可选的方式中，所述泡棉的发泡倍率为2-8倍，和/或，所述泡棉的密度为0.1-0.5g/m 3。
在一种可选的方式中，所述第二结构件包括绝缘材料，所述第二结构件处于被压缩状态。
在一种可选的方式中，沿第一方向，第二结构件位于第一电芯的电极端子和第二电芯的电极端子之间。
在一种可选的方式中，每一电芯的电极端子包括正极端子和负极端子。其中，正极端子连接于电极组件且自电芯壳体的内部延伸出电芯壳体，负极端子连接于电极组件且自电芯壳体的内部延伸出电芯壳体，沿第三方向，正极端子和负极端子分离设置，其中，第三方向垂直于第一方向和第二方向，此外，沿第一方向，第二结构件位于第一电芯的第一正极端子和第二电芯的第二负极端子之间。
在一种可选的方式中，第一电芯的第一负极端子与第二电芯的第二正极端子连接，沿第三方向，第二结构件与第二电芯的第二正极端子分离设置，所述第二结构件与所述第一电芯的第一负极端子分离设置。
在一种可选的方式中，沿第三方向，第一电芯的宽度为w，第二结构件的宽度为w1，w1和w的比值在1/3至3/5之间。
在一种可选的方式中，沿第三方向，第二结构件与第二电芯的第二正极端子之间的间距为3-5毫米。
在一种可选的方式中，沿第一方向，第一电芯的第一正极端子与第二结构件分离设置，沿第一方向，第二电芯的第二负极端子与第二结构件分离设置。
在一种可选的方式中，电池组还包括第一导电件，第一导电件的一端连接于第一结构件，第一导电件的另一端连接于相互连接的第一电芯的第一负极端子和第二电芯的第二正极端子中的至少一个。
在一种可选的方式中，第一电芯的第一正极端子包括延伸出第一电芯的电芯壳体的第一正极连接部，沿第一方向，第二结构件与第一正极连接部分离设置，第二电芯的第二负极端子包括延伸出第二电芯的电芯壳体的第二负极连接部，沿第一方向，第二结构件与第二负极连接部分离设置。
在一种可选的方式中，每一电芯还包括位于电芯壳体的内电极端子，内电极端子的一端与电极端子连接，内电极端子的另一端与电极组件连接，沿与第二方向相反的方向观察，第二结构件覆盖内电极端子与电极端子连接的连接区域。
在一种可选的方式中，电芯壳体包括，沿第一方向观察时与电极组件有重叠部分的第一部分以及自第一部分延伸形成的第二部分，电极端子自第二部分延伸出电芯壳体，沿所述第二方向，第二部分至少部分位于第一结构件与第一部分之间，沿第一方向，第二结构件位于第一电芯的第二部分和第二电芯的第二部分之间。
在一种可选的方式中，沿所述第一方向，第二结构件与第一电芯的第二部分之间的距离的范围为0.5至2毫米。
在一种可选的方式中，沿所述第一方向，所述第二结构件与所述第一电芯的第二部分分离设置。
在一种可选的方式中，所述第二结构件配置于所述第一电芯的第一部分。
在一种可选的方式中，第二结构件固定于第一电芯的第一部分。
在一种可选的方式中，第二结构件粘接于第一结构件的第一面。
在一种可选的方式中，第一结构件的第一面设有凹部，第二结构件部分固定于凹部。
在一种可选的方式中，若干电芯还包括第三电芯，第三电芯与第一电芯相邻，第三电芯位于第一电芯远离第二电芯的一侧，电池组还包括第三结构件，沿第二方向观察，第一结构件与第三电芯的电芯壳体存在重叠，此外，第三结构件至少满足以下条件之一:(a2)、第三结构件配置于第一结构件的第一面，(b2)、第三结构件配置于第一电芯的电芯壳体，(c2)、第二结构件配置于第三电芯的电芯壳体。
在一种可选的方式中，沿第一方向，第三结构件位于第一电芯的电极端子和第三电芯的电极端子之间。
在一种可选的方式中，每一电芯壳体的第二部分与电芯壳体的第一部分的第一表面连接，沿第二方向，第一结构件的第一面与第一电芯的第一表面相对设置，第二结构件配置于电芯壳体时，第二结构件配置于第一表面，第三结构件配置于电芯 壳体时，第三结构件配置于第一表面。
在一种可选的方式中，第一表面包括第一区域和第二区域，沿第一方向，第一区域和第二区域位于第二部分两侧，第一电芯的第一区域与第二电芯相邻，第一电芯的第二区域与第三电芯相邻，沿与第二方向相反的方向，第二结构件的投影部分位于第一电芯的第一区域，第二结构件的投影部分位于第二电芯的第二区域，第三结构件的投影部分位于第一电芯的第二区域，第三结构件的投影部分位于第三电芯的第一区域。
在一种可选的方式中，沿第一方向，第三结构件位于第一电芯的第二部分和第三电芯的第二部分之间。
在一种可选的方式中，沿第三方向观察，第三结构件和第二结构件分离设置。
在一种可选的方式中，沿第一方向观察，第三结构件和第二结构件存在重叠区域。
在一种可选的方式中，电池组包括电池壳体，电池壳体设有第一空间，电池组件和第一结构件设于第一空间，电池壳体朝第一空间延伸有第一凸部和第二凸部，第一凸部和第二凸部相对设置，第一结构件的一端设于第一凸部远离电芯壳体的一表面，第一结构件的另一端设于第二凸部远离电芯壳体一表面。
根据本申请实施例的另一个方面，提供了一种制备电池组的方法，该方法包括：提供电池组件，所述电池组件包括若干沿第一方向依次叠置的电芯，每一所述电芯包括电极组件、电芯壳体和电极端子，所述电极端子连接于所述电极组件且自所述电芯壳体的内部延伸出所述电芯壳体，电极组件设于所述电芯壳体内，所述若干电芯包括第一电芯和第二电芯，其中，所述第一电芯和第二电芯相邻。提供第一结构件和第二结构件，沿第二方向，所述第一结构件相对设置有第一面和第二面，所述第一面用于面向所述电芯壳体。将所述第二结构件固定于所述第一结构件的第一面。将所述第一结构件沿与所述第二方向相反的方向移动至所述第一结构件与电极组件连接。
本申请实施例的有益效果是：区别于现有技术的情况，本申请实施例通过设置有电池组件、第一结构件和第二结构件。其中，电池组件包括若干沿第一方向叠置的电芯，每一电芯均包括电极组件、电芯壳体和电极端子，电极端子连接于电极组件且自电芯壳体的内部延伸出电芯壳体，电极组件设于电芯壳体内，沿第二方向观察，第一结构件与电芯壳体存在重叠，第二方向与第一方向垂直，此外，若干电芯 包括相邻设置的第一电芯和第二电芯，沿第二方向，第一结构件相对设置有第一面和第二面，第一面面向电芯壳体，第二结构件至少满足以下条件之一：(a1)、所述第二结构件配置于所述第一结构件的第一面，(b1)、所述第二结构件配置于所述第一电芯的电芯壳体，(c1)、所述第二结构件配置于所述第二电芯的电芯壳体。这样设置，在电池组受外力时，第二结构件对电池组可起到缓冲作用，减小电池组件或者第一结构件受力，减小电池组件或者第一结构件因碰撞受损。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请实施例一提供的电池组整体结构的一个方向的示意图；
图2是本申请实施例一提供的电池组部分结构的一个方向的示意图；
图3是本申请实施例一提供的电池组件连接第二结构件的一种实现方式的示意图；
图4是本申请实施例一提供的电池组的另一个方向的示意图；
图5是本申请实施例提供的电芯的示意图；
图6是本申请实施例提供的电芯的***示意图；
图7是本申请实施例提供的图3中A2部的放大图的一种标示形式；
图8是本申请实施例一提供的电池组的另一个方向的示意图；
图9是图8中A处结构放大图的一种标示形式；
图10是本申请实施例一提供的电池组的第一结构件的结构示意图；
图11是本申请实施例提供的图2中A1部的放大图；
图12是本申请实施例提供的图3中A2部的放大图的另一种标示形式；
图13是本申请实施例一提供的电池组件连接第二结构件的另一种实现方式的示意图；
图14是是本申请电芯的局部示意图；
图15是本申请实施例二提供的电池组件连接第二结构件的一种实现方式的示意图；
图16是本申请实施例二提供的电池组的示意图；
图17是本申请实施例提供的图15中A3部的放大图的一种标示形式；
图18是本申请实施例提供的图15中A3部的放大图的另一种标示形式；
图19是本申请实施例二提供的电池组件连接第二结构件的另一种实现方式的示意图；
图20是本申请实施例二提供的电池组件连接第二结构件的又一种实现方式的示意图；
图21是本申请实施例提供的电池组的示意图；
图22是本申请实施例提供的电池组的***示意图；
图23是本申请实施例提供的沿图21中P-P线的剖视图；
图24是本申请实施例三提供的制备电池组的流程示意图；
图25是本申请实施例三提供的制备电池组的一个工艺阶段的示意图；
图26是本申请实施例三提供的制备电池组的又一个工艺阶段的示意图；
图27是本申请实施例三提供的制备电池组的另一个工艺阶段的示意图；
图28是本申请实施例四提供的制备电池组的流程示意图；
图29是本申请实施例四提供的制备电池组的一个工艺阶段的示意图；
图30是本申请实施例四提供的制备电池组的又一个工艺阶段的示意图；
图31是本申请实施例四提供的制备电池组的另一个工艺阶段的示意图；
图32是本申请实施例五提供的制备电池组的流程示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
下面所描述的本申请各个实施例中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
实施例一
实施例一提供了电池组1000的一种实现方式，请参阅图1-图4，电池组1000包括电池组件100、第一结构件200和第二结构件300。第二结构件300设置于电池组件100和第一结构件200之间。通过在电池组件100和第一结构件200之间设置第二结构件300，电池组1000受外力时，第二结构件300对电池组1000进行缓冲，减小电池组件100或者第一结构件200受力，减少电池组件100或者第一结构件200因碰撞受损。
在一些实施例中，第二结构件300和第一结构件200相对设置。沿第二方向L2观察，第一结构件200与电池组件100存在重叠，其中第二方向L2为第二结构件300和第一结构件200相对设置的方向，第二方向L2垂直于第一结构件200。第一结构件200包括沿第二方向L2相对设置的第一面201和第二面202，第一面201面向电池组件100。
在一些实施例中，第二结构件300包括绝缘材料，第二结构件300的邵氏硬度C在65-90之间。在一些实施例中，第二结构件300包括绝缘材料，第二结构件300处于被压缩状态。第二结构件300包括绝缘材料，第二结构件300的弹性模量的范围为0.5-10Mpa。在一些实施例中，第二结构件300包括泡棉。可选的，泡棉包括乙烯醋酸乙烯共聚物。可选的，泡棉的发泡倍率为2-8倍。可选的，泡棉的密度为0.1-0.5g/m 3。
对于上述电池组件100，请参阅图3-图6，电池组件100包括若干沿第一方向L1叠置的电芯10。第一方向L1与第二方向L2垂直。
每个电芯10包括电极组件101、电芯壳体102和电极端子103，电极端子103包括极性相反的两个端子1031和1032，本实施例中，以1031是正极端子、1032是负极端子为例进行说明，在其他实施中，也可以是1031是负极端子、1032是正极端子。可以理解的是：正极端子的材料可为但不限于铝材料，负极端子的材料可为但不限于镍材料。电极组件101收容在电芯壳体102，正极端子1031连接于电极组件101且自电芯壳体102的内部延伸出电芯壳体102，负极端子1032连接于电极组件101且自电芯壳体102的内部延伸出电芯壳体102。电芯壳体102包括沿所述 第一方向L1观察时与所述电极组件有重叠部分第一部分1021,以及自第一部分1021延伸形成的第二部分1022。第一部分1021用于收容电极组件101。正极端子1031和负极端子1032均自第二部分1022延伸出电芯壳体102。可选的，电极组件101包括由正极片、负极片以及隔离膜形成的卷绕式或叠片式结构。
在一些实施例中，电芯壳体102包括第一壳体102a和第二壳体102b。第一壳体102a连接第二壳体102b，第一壳体102a和第二壳体102b沿其连接位置可以进行折叠，使第一壳体102a和第二壳体102b重合，形成第一部分1021以包覆电极组件101。第一壳体102a周侧向外延伸形成第一区102a1，第二壳体102b周侧向外延伸形成第二区102b1。第一壳体102a和第二壳体102b沿其连接位置进行折叠后，第一区102a1与第二区102b1重合并密封连接，形成第二部分1022。正极端子1031和负极端子1032均自第二部分1022相对连接位置的一侧伸出电芯壳体102。
正极端子1031和负极端子1032自电芯10的同一端延伸出电芯壳体102。沿第三方向L3，正极端子1031和负极端子1032分离设置，其中，第三方向L3与第一方向L1垂直，第三方向L3与第二方向L2垂直。在其他实施例中，正极端子1031和负极端子1032可自电芯10的相对的两端分别延伸出电芯壳体102，比如，沿第二方向L2，正极端子1031和负极端子1032自电芯10的相对的两端分别延伸出电芯壳体102。可选的，电芯壳体102包括铝塑膜。可选的，电芯10包括软包电芯。在其他的实施例中，第一壳体102a和第二壳体102b可为2个相离的壳体。沿第二方向L2观察，第一结构件200与电芯壳体102存在重叠。
请参阅图7，若干电芯10包括相邻设置的第一电芯11和第二电芯12。第一电芯11和第二电芯12为若干电芯10中任意相邻设置的两个电芯。第一电芯11包括第一正极端子1031a和第一负极端子1032a，第二电芯12包括第二正极端子1031b和第二负极端子1032b。
请一并参阅图5-图7，第一正极端子1031a包括位于第一电芯11的电芯壳体102外的第一正极连接部10311，第一负极端子1032a包括位于第一电芯11的电芯壳体102外的第一负极连接部10411。第二正极端子1031b包括位于第二电芯12的电芯壳体102外的第二正极连接部10321，第二负极端子1032b包括位于第二电芯12的电芯壳体102外的第二负极连接部10421。沿第一方向L1，第一正极连接部10311和第二负极连接部10421分离设置，第二结构件300设于第一正极连接部10311和第二负极连接部10421之间。第一正极连接部10311与第二负极连接部 10421连接，第一负极连接部10411与第二正极连接部10321连接，相邻电芯之间形成串联连接。在一些实施例中，沿第二方向L2，第一电芯11的第一负极连接部10411与第二电芯12的第二正极连接部10321有重叠。
在一些实施例中，第一结构件200包括电路板，该电路板可为Battery Management System(BMS)板，BMS板可用于对电芯进行充电和放电管理。第一电芯11的第一负极端子1032a与第二电芯12的第二正极端子1031b之中的至少一个与第一结构件200电连接。沿第二方向L2，第一正极端子1031a的第一正极连接部10311和第一负极端子1032a的第一负极连接部10411位于第一结构件200与电芯壳体10之间，第二正极端子1031b的第二正极连接部10321和第二负极端子1032b的第二负极连接部10421位于第一结构件200与电芯壳体10之间。
在一些实施例中，第一电芯11的第一正极端子1031a与另一第二电芯12的第二负极端子1032b之中的至少一个与第一结构件200电连接。可选的，第一正极端子1031a焊接于第一结构件200。可选的，第二负极端子1032b焊接于第一结构件200。
在一些实施例中，如图8和图9所示，电池组1000包括第一导电件400，第一导电件400的一端连接于第一结构件200，第一导电件400的另一端连接于相互连接的第一电芯11的第一负极端子1032a和第二电芯12的第二正极端子1031b中的至少一个。可选的，第一电芯11的第一负极端子1032a和第二电芯12的第二正极端子1031b包括相互连接的连接处103a，可选的。第一导电件400的另一端连接于连接处103a。
第二结构件300至少满足以下条件之一:(a1)、第二结构件300配置于第一结构件200的第一面201；(b1)、第二结构件300配置于第一电芯11的电芯壳体102；(c1)、第二结构件300配置于第二电芯12的电芯壳体102，有利于第二结构件300将电芯壳体102受到的外部力传递给第一结构件200，提升对电芯壳体102的保护。
请一并参阅图10和图11，第二结构件300配置于第一结构件200的第一面201时，可选的，第二结构件300固定于第一结构件200的第一面201。可选的，第一结构件200的第一面201设有凹部200a，第二结构件300的部分固定于凹部200a。可选的，第二结构件300利用粘接层700粘接于第一结构件200的第一面201。在制造过程中，粘接层700可先设置于第二结构件300上，之后第二结构件300再粘接于第一结构件200的第一面201，粘接层700也可以先设置于第一结构件200的 第一面201上，之后第二结构件300再与粘接层700粘接，对于粘接层700在制造过程中的具体步骤顺序，本申请不作具体限定。
第二结构件300配置于第一电芯11的电芯壳体102时，可选的，第二结构件300粘接于第一电芯11的电芯壳体102。可选的，电芯壳体102包括第一部分1021和第二部分1022时，第二结构300件固定于第一电芯11的第一部分1021，进一步的，第二结构件300固定于沿第二方向L2观察第一部分1021与第一结构件200重叠的部分。
其中，第二结构件300配置于第二电芯12的电芯壳体102时，可选的，第二结构件300粘接于第二电芯12的电芯壳体102。可选的，电芯壳体102包括第一部分1021和第二部分1022时，第二结构件300固定于第二电芯12的第一部分1021。进一步的，第二结构件300固定于沿第二方向L2观察第一部分1021与第一结构件200重叠的部分。
可选的，第二结构件300粘接于第一结构件200的第一面201，第二结构件300还同时粘结于第一电芯11的电芯壳体102。通过粘接的连接方式，进一步加强第二结构件300与第一面201以及第一电芯的电芯壳体102之间的连接稳定性，可简化工艺生产，有利于自动化生产。
可选的，第二结构件300固定于第一结构件200的第一面201，第二结构件300还同时固定于第二电芯12的电芯壳体102。可选的，电芯壳体102包括第一部分1021和第二部分1022时，第二结构件300固定于第二电芯12的第一部分1021，具体的，第二结构件300固定于沿第二方向L2观察第一部分1021与第一结构件200重叠的部分。进一步加强第二结构件300与第二电芯12的电芯壳体102之间的连接稳定性，可简化工艺生产，有利于自动化生产。
当电芯壳体102包括第一部分1021和第二部分1022时，第二部分1022与第一部分1021的第一表面102c连接。沿第二方向L2,所述第一结构件200的第一面201与第一表面对102c相设置。
第二结构件300配置于电芯壳体102时，第二结构件300配置于第一表面102c。可选的，第二结构件300配置于第一电芯11的第一表面102c。可选的，第二结构件300配置于第二电芯12的第一表面102c。
在一些实施例中，电芯壳体102的第一表面102c包括第一区域102c1和第二区域102c2，沿第一方向L1，第一区域102c1和第二区域102c2位于第二部分1022 两侧，第一电芯11的第一区域102c1与第二电芯12的第二区域102c2相邻，沿与第二方向L2相反的方向L2 ’，第二结构件300的投影部分位于第一电芯11的第一区域102c1，第二结构件300的投影部分位于第二电芯12的第二区域102c2。
请参阅图7，沿第一方向L1，在一些实施例中，第二结构件300位于第一电芯11的电极端子103和第二电芯12的电极端子103之间。进一步的，沿第一方向L1，第二结构件300位于第一电芯11的第一正极端子1031a和第二电芯12的第二负极端子1032b之间。
请参阅图7，沿第一方向L1，第一电芯11的第一正极端子1031a与第二结构件300分离设置。第二电芯12的第二负极端子1032b与第二结构件300分离设置。沿第一方向L1，第二结构件300不压第一电芯11的第一正极端子1031a，第二结构件300不压第二电芯12的第二负极端子1032b，有利于保护电极端子103。
可选的，请参阅图7，第一电芯11的第一正极端子1031a包括延伸出第一电芯11的电芯壳体102的第一正极连接部10311，第二电芯12的第二负极端子1032b包括延伸出第二电芯12的电芯壳体102的第二负极连接部10421，沿第一方向L1，第二结构件300与第一正极连接部10311分离设置，第二结构件300与第二负极连接部10421分离设置。
可选的，电芯壳体102包括第一部分1021和第二部分1022时，沿第二方向L2，第二部分1022至少部分位于第一结构件200与第一部分1021之间，沿第一方向L1，第二结构件300位于第一电芯11的第二部分1022和第二电芯12的第二部分1022之间。
可选的，请参图7，沿第一方向L1，第二结构件300与第一电芯11的第二部分1022分离设置，第二结构件300与第一电芯11的第二部分1022之间的距离d1的范围为0.5毫米至2毫米。有利于保护第一电芯11的电极端子103，有利于第二结构件300的组装。可选的，第二结构件300与第一电芯11的第二部分1022之间的距离d1的范围为0.8毫米至1.5毫米。有利于进一步保护第一电芯11的电极端子103，方便组装。
可选的，请参图7，沿第一方向L1，第二结构件300与第二电芯12的第二部分1022分离设置，第二结构件300与第二电芯12的第二部分1022之间的距离d2的范围为0.5至2毫米。有利于保护第二电芯12电极端子103，有利于第二结构件300的组装。可选的，第二结构件300与第二电芯12的第二部分1022之间的距离d1 的范围为0.8毫米至1.5毫米。有利于进一步保护第二电芯12电极端子103，方便组装。
在一些实施例中，请参阅图9-图11，沿第二方向L2，第一电芯11的第一正极端子1031a与另一第二电芯12的第二负极端子1032b的连接处103a与第一结构件200之间具有间隙103s，第二结构件300配置于第一电芯11和/或第二电芯12的电芯壳体102时，沿第二方向L2，第二结构件300可延伸至间隙103s，在第一结构件200受外力时，第二结构件300可承载该外力，减小电芯10受损。
第二结构件300配置于第一结构件200的第一面201，电芯壳体102包括第一部分1021和第二部分1022时，在一些实施例中，沿第二方向L2，第一电芯11的第一正极连接部10311位于第一结构件200与第一电芯11的第一部分1021之间。沿第二方向L2，第二结构件300与第一负极连接部10411分离设置，第二结构件300不压第一负极连接部10411，在第一结构件200受到外力时，可减少第一结构件200或者第二结构件300与第一负极连接部10411接触，减少电芯10受损。
在一些实施例中，沿与第二方向L2相反的方向L2’观察时，沿第三方向L3，第一电芯11的宽度为w，第二结构件300的宽度为w1，w1和w的比值在1/3至3/5之间。有利于提升电芯10的保护。可选的，w1和w的比值在2/5至1/2之间。
在一些实施例中，请一并参阅图12-图14，沿与第二方向L2相反的方向L2’观察时，沿第三方向L3，第二结构件300与第二电芯12的第二正极连接部10321之间的间距d3为2-6毫米。有利于进一步提升电芯10的保护。可选的，d3为3-5毫米。
在一些实施例中，沿与第二方向L2相反的方向L2’观察时，沿第三方向L3，第二结构件300与第一电芯11的第一负极连接部10411之间的间距d4为3-5毫米。有利于进一步提升电芯10的保护。可选的，d4为3-5毫米。
在一些实施例中，电芯10还包括位于电芯壳体102的内电极端子105，内电极端子105的一端与电极端子103连接，内电极端子105的另一端与电极组件101连接。沿与第二方向L2相反的方向观察，第二结构件300覆盖内电极端子105与电极端子103连接的连接区域1041。
在一些实施例中，如图14所示，内电极端子105包括第一内电极端子(图未示)和第二内电极端子。第一内电极端子的一端与电极端子103连接，第一内电极端子的另一端与电极组件101连接。第二内电极端子的一端与电极端子103连接，第二 内电极端子的另一端与电极组件101连接。可选的，第一内电极端子与正极端子1031连接。第二内电极端子与负极端子1032连接。
在一些实施例中，当电池组1000受到外力时，第二结构件300可发生弹性变形，内电极端子105与电极端子103连接的连接区域1041可将电芯10受到的外力传递至第二结构件300，减少电芯10受损。
实施例二
在本实施例中，与第一实施例相同的结构以相同的标号示出，本实施例不再一一解释。请参阅图15-图17，电池组1000包括电池组件100，电池组件100包括若干沿第一方向L1叠置的电芯10，若干电芯10还包括第三电芯13。第三电芯13与第一电芯11相邻，第三电芯13位于第一电芯11远离第二电芯12的一侧，第一电芯11、第二电芯12和第三电芯13沿第一方向L1叠置。
其中，第三电芯13、第一电芯11和第二电芯12为若干电芯10中任意相邻的三个电芯。
其中，第三电芯13为若干电芯10中的一个，第三电芯13的结构和功能可参考实施例一中的电芯10，此处不再赘述。
电池组1000还包括第三结构件500。可选的，第三结构件500可与第二结构件300具有相同的结构、功能和材质，具体的，实施例一中以第一电芯11和第二电芯12作为相邻电芯，本实施例以第一电芯11和第三电芯13作为相邻电芯描述，其中，第三结构件500的结构、功能和材质可参阅实施例一中的第二结构件300的结构、功能和材质。
在一些实施例中，第二结构件300包括泡棉，第三结构件500包括泡棉，第三结构件500的弹性模量可与第二结构件300的弹性模量不同。
请参阅图17，沿第一方向L1，在一些实施例中，第三结构件500位于第一电芯11的电极端子103和第三电芯13的电极端子103之间。沿第一方向L1，第三结构件500位于第一电芯11的第一负极端子1032a和第三电芯13的正极端子1031之间。
沿第一方向L1，第一电芯11的第一负极端子1032a与第三结构件500分离设置。第三电芯13的正极端子1031与第三结构件500分离设置。沿第一方向L1，第三结构件500不压第一电芯11的第一负极端子1032a，第三结构件500不压第三电芯13的正极端子1031，有利于保护电极端子103。
可选的，沿第一方向L1，第三结构件500与第一电芯11的第二部分1022分离设置，第三结构件500与第一电芯11的第二部分1022之间的距离d5的范围为0.5至2毫米。有利于进一步保护电极端子103，有利于第三结构件500的组装。可选的，第三结构件500与第一电芯11的第二部分1022之间的距离d1的范围为0.8毫米至1.5毫米。
沿第二方向L2观察，第三结构件500与第三电芯13的电芯壳体102存在重叠。
第三结构件500至少满足以下条件之一:(a2)、第三结构件500配置于第一结构件200的第一面201；(b2)、第三结构件500配置于第一电芯11的电芯壳体102；(c2)、第二结构件300配置于第三电芯13的电芯壳体102。有利于第三结构件500将电芯壳体102受到的外部力传递给第一结构件200，提升对电芯壳体102的保护。
其中，第三结构件500配置于第一结构件200的第一面201时，可选的，第三结构件500固定于第一结构件200的第一面201。可选的，第一结构件200的第一面201设有凹部200a，第三结构件500的部分固定于凹部。可选的，第三结构件500利用粘接层700粘接于第一结构件200的第一面201。需要说明的是：在加工过程中，粘接层700可先设置于第三结构件500上，之后第三结构件500再粘接于第一结构件200的第一面201，粘接层700也可以先设置于第一结构件200的第一面201上，之后第三结构件500再与粘接层700粘接，对于粘接层700在加工过程中的具体步骤顺序，本申请不作具体限定。
其中，第三结构件500配置于第一电芯11的电芯壳体102时，可选的，第三结构件500粘接于第一电芯11的电芯壳体102。可选的，电芯壳体102包括第一部分1021和第二部分1022时，第三结构件500件固定于第一电芯11的第一部分1021，进一步的，第三结构件500固定于沿第二方向L2观察第一部分1021与第一结构件200重叠的部分。
其中，第三结构件500配置于第三电芯13的电芯壳体102时，可选的，第三结构件500粘接于第三电芯13的电芯壳体102。可选的，电芯壳体102包括第一部分1021和第二部分1022时，第三结构件500固定于第三电芯13的第一部分1021，进一步的，第三结构件500固定于沿第二方向L2观察第一部分1021与第一结构件200重叠的部分。
其中，第三结构件500可配置于第一结构件200的第一面201，第三结构件500同时还可配置于第一电芯11的电芯壳体102。这样设置，进一步提升第三结构件500、 第一面201和第一电芯11连接的稳定性。
其中，第三结构件500可配置于第一结构件200的第一面201，第三结构件500同时还可配置于第三电芯13的电芯壳体102。这样设置，进一步提升第三结构件500、第一面201和第三电芯13之间连接的稳定性。
请参阅图18，第二结构件300配置于第一电芯11的第一表面102c，第二结构件300配置于第二电芯12的第一表面102c，第三结构件500配置于第三电芯13的第一表面102c，第三结构件500配置于第一电芯11的第一表面102c。
在一些实施例中，第一电芯11的第一区域102c1与第二电芯12的第二区域102c2相邻，第一电芯11的第二区域102c2与第三电芯13的第一区域102c1相邻，沿与第二方向L2相反的方向，第二结构件300的投影部分位于第一电芯11的第一区域102c1，第二结构件300的投影部分位于第二电芯12的第二区域102c2，第三结构件500的投影部分位于第一电芯11的第二区域102c2，第三结构件500的投影部分位于第三电芯13的第一区域102c1。
在一些实施例中，沿第三方向L3观察，第三结构件500和第二结构件300分离设置。
在一些实施例中，请参阅图15，沿第一方向L1观察，第三结构件500和第二结构件300存在重叠区域501，进一提升对电芯壳体102的保护。
在一些实施例中，请参阅图19，沿第一方向L1观察，第三结构件500和第二结构件300分离设置。
在一些实施例中，电池组1000中并不是如图11所示的每相邻的两个电芯10之间设置一个第二结构件300。请参阅图20，电池组件100沿第一方向L1的一端设置一个或者两个第二结构件300，电池组件100沿第一方向L1的一端设置一个或者两个第三结构件500，电池组件100沿第一方向L1的另一端的设置一个或者两个第二结构件300，电池组件100沿第一方向L1的另一端的设置一个或者两个第三结构件500。通过电池组件100沿第一方向L1的两端的第二结构件300和第三结构件500对第一结构件200作用在电池组件100上的作用力进行缓冲，可减少第一结构件200与电池组件100碰撞引起的损坏，可减少第二结构件300和第三结构件500的使用数量，减少电池组1000的生产成本。其他的实施例中，可设置不同数量的第二结构件300和第三结构件500。
请参阅图21-图23，电池组1000还包括电池壳体600，电池壳体600设第一空间600s，可选的，电池组件100、第一结构件200、第二结构件300设于第一空间600s，可选的，电池组件100、第一结构件200、第二结构件300、第三结构件500设于第一空间600s。
请参阅图23，电池壳体600朝第一空间600s延伸有第一凸部601和第二凸部602，第一凸部601和第二凸部602相对设置。
第一结构件200的一端设于第一凸部601远离电芯壳体102的一表面，第一结构件200的另一端设于第二凸部602远离电芯壳体102一表面。第一凸部601和第二凸部602对第一结构件200提供支撑。可选的，第一结构件200粘接于第一凸部601。可选的，第一结构件200粘接于第二凸部602。加强第一结构件200和电池壳体600之间的连接。
在本申请实施例中，电池组1000受外力时，电池组件100的受到的力通过第一结构件200传导到电池壳体600，进一步提升对电芯壳体102的保护。
在一些实施例中，请参阅图22，电池壳体600还设有若干凹陷部603，凹陷部603的数量与电芯10的数量相同，一电芯10设于一凹陷部603，通过凹陷部603可减少电芯10在电池壳体600内移动。
实施例三
实施例三提供了一种制备电池组的方法。请参阅图24，本实施例提供的制备电池组的方法包括以下步骤：
步骤S10a，提供电池组件100。
其中，电池组件100包括若干沿第一方向L1叠置的电芯10。每一电芯10包括电极组件101、电芯壳体102和电极端子103。电极组件101收容在电芯壳体102，电极端子103连接于电极组件101且自电芯壳体102的内部延伸出电芯壳体102。若干电芯10包括相邻设置的第一电芯11和第二电芯12。第一电芯11和第二电芯12为若干电芯10中任意相邻设置的两个电芯10。电池组件100的具体结构和功能可参阅实施例一，此处不再赘述。
步骤S20a，提供第一结构件200和第二结构件300。
第一结构件200包括沿第二方向L2相对设置的第一面201和第二面202。第一 面201面向电芯壳体102。其中，第二方向L2与第一方向L1垂直。第二方向L2与第一结构件200垂直。
第一结构件200和第二结构件300的具体结构和功能可参阅实施例一，此处不再赘述。
步骤S30a，将第二结构件300固定于第一结构件200的第一面201。
可选的，通过粘接的方式将第二结构件300固定于第一结构件200的第一面201。
步骤S40a，将第一结构件200沿与第二方向L2相反的方向移动至第一结构件200与电池组件100连接。
请参阅图26和图27，在将第二结构件300固定于第一结构件200的第一面201后，将第一结构件200沿与第二方向L2相反的方向移动至第二结构件300与电池组件10连接。
可选的，将第一结构件200沿与第二方向L2相反的方向移动至第一结构件200与第一电芯11的电芯壳体102连接，将第一结构件200沿与第二方向L2相反的方向移动至第一结构件200与第二电芯12的电芯壳体102连接。
可选的，本实施例提供的制备电池组的方法还包括在将第一结构件200靠近电池组件100的一侧涂有粘接剂，第一结构件200粘接于第一电芯11的电芯壳体102，和/或第一结构件200粘接于第二电芯12的电芯壳体102。
可选的，第一结构件200与电池组件100连接的一种可选的方式为通过第一导电件400连接。具体的，将第一导电件400的一端连接于第一结构件200的第二面，将第一导电件400的另一端朝向电芯壳体102弯折后连接于相互连接的第一电芯11的负极端子和第二电芯12的正极端子中的至少一个从而形成正极端子和/或负极端子的连接处103a。
可选的，第一结构件200与电池组件100连接的一种可选的方式为通过第二导电件连接。具体的，将第二导电件的一端连接于第一结构件200的第二面，将第二导电件的另一端朝向电芯壳体102弯折后连接于相互连接的第一电芯11的第一正极端子1031a和第二电芯12的第二负极端子1032b中的至少一个从而形成正极端子和/或负极端子的连接处103a。
步骤S50a，将电池组件100和第一结构件200设于第一空间600s。
在一些实施例中，步骤S50a还包括将第一结构件200的一端设于第一凸部601远离电芯壳体102的一表面，第一结构件200的另一端设于第二凸部602远离电芯 壳体102一表面。第一凸部601和第二凸部602对第一结构件200提供支撑。
在一些实施例中，步骤S50a还包括在第一凸部601涂覆有粘接剂，第一结构件200的一端粘接于第一凸部601。
在一些实施例中，步骤S50a还包括在第二凸部602涂覆有粘接剂，第一结构件200的一端粘接于第二凸部602。
在一些实施例中，步骤S50a在第一结构件200涂覆有粘接剂，第一结构件200的一端粘接于第一凸部601。
在一些实施例中，步骤S50a在第一结构件200涂覆有粘接剂，第一结构件200的一端粘接于第二凸部602。
实施例三提供的电池组的制备方法适用于制备上述实施例一中提供的任意一种电池组，其构成的技术方案也在本申请的保护范围内。
在一些实施例中，步骤S10a还包括提供第三电芯13，步骤S20a还包括提供第三结构件500，步骤S30a包括将第三结构件500固定于第一结构件200的第一面201。
第三结构件500、第一结构件200与电池组件100的装配方式可参考本实施例二中第二结构件300、第一结构件200与电池组件100的装配方式，此处不再赘述。
在本申请实施例中，通过上述电池组的制备方法，在将第二结构件300固定于第一结构件200的第一面之后，将第一结构件200沿与第二方向相反的方向L2’移动至第二结构件300与电芯壳体102连接，本申请提供的电池组的制备方法的制备工艺相对简单。另外，在第二方向L2上，减少对第二结构件300的尺寸限制。
实施例四
实施例四提供了一种制备电池组的方法。请参阅图28，本实施例提供的制备电池组的方法包括以下步骤：
步骤S10b，提供电池组件。
其中，电池组件100包括若干沿第一方向L1叠置的电芯10。若干电芯10包括相邻设置的第一电芯11和第二电芯12。第一电芯11和第二电芯12为若干电芯10中任意相邻设置的两个电芯10。
步骤S20b，提供第一结构件200和第二结构件300。
上述步骤S10b可参阅实施例三中的步骤S10a，此处不再赘述。
上述步骤S20b可参阅实施例三中的步骤S20a，此处不再赘述。
步骤S30b，将第二结构件300固定于第一电芯11的电芯10壳体。
可选的，通过粘接的方式将第二结构件300固定于第一电芯11的电芯壳体102。
步骤S40b，将第一结构件200沿与第二方向L2相反的方向L2’移动至第一结构件200与电池组件100连接。
本申请提供的电池组的制备方法适用于制备上述实施例一提供的任意一种电池组，其构成的技术方案也在本申请的保护范围内。
例如，对于实施例一中提供的电池组，步骤S40b包括将第二结构件300移动至第一结构件200的凹部200a。
步骤S50b，电池组件100和第一结构件200设于第一空间600s。
可选的，步骤S50b还包括将第一结构件200的一端设于第一凸部601远离电芯壳体102的一表面，第一结构件200的另一端设于第二凸部602远离电芯壳体102一表面。第一凸部601和第二凸部602对第一结构件200提供支撑。
在一些实施例中，步骤S50b还包括在第一凸部601涂覆有粘接剂，第一结构件200的一端粘接于第一凸部601。
在一些实施例中，步骤S50b还包括在第二凸部602涂覆有粘接剂，第一结构件200的一端粘接于第二凸部602。
在一些实施例中，步骤S50b在第一结构件200涂覆有粘接剂，第一结构件200的一端粘接于第一凸部601。
在一些实施例中，步骤S50b在第一结构件200涂覆有粘接剂，一结构件200的一端粘接于第二凸部602。
在一些实施例中，步骤S10b还包括提供第三电芯13，步骤S20b还包括第三结构件500，步骤S30b包括将第三结构件500固定于第一电芯11的电芯10壳体。
例如，实施例中对于第三结构件500、第一结构件200与电池组件100的装配方式可参考该实施例三中第二结构件300、第一结构件200与电池组件100的装配方式，此处不再赘述。
在本申请实施例中，通过上述电池组的制备方法，在将第二结构件300固定于第一电芯11的电芯壳体102之后，将第一结构件200沿与第二方向相反的方向移动至第一结构件200与电池组件100连接，本申请提供的电池组的制备方法的制备工艺相对简单。另外，在第二方向L2上，减少对第二结构件300的尺寸限制。
实施例五
实施例五提供了一种制备电池组的方法。实施例五提供的制备电池组的方法包括以下步骤：
步骤S10c，提供电池组件100。
其中，电池组件100包括若干沿第一方向L1叠置的电芯10。若干电芯10包括相邻设置的第一电芯11和第二电芯12。第一电芯11和第二电芯12为若干电芯10中任意相邻设置的两个电芯10。
步骤S20c，提供第一结构件200和第二结构件300。
上述步骤S10c可参阅实施例三中的步骤S10a，此处不再赘述。
上述步骤S20c可参阅实施例三中的步骤S20a，此处不再赘述。
步骤S30c，将第二结构件300固定于第二电芯12的电芯壳体102。
步骤S30c的工艺制程可参阅实施例六以及附图29，此处不再赘述。
可选的，通过粘接的方式将第二结构件300固定于第二电芯12的电芯壳体102。
步骤S40c，将第一结构件200沿与第二方向L2相反的方向L2’移动至第一结构件200与电池组件100连接。
实施例五提供的电池组的制备方法适用于制备上述实施例一中提供的任意一种电池组，其构成的技术方案也在本申请的保护范围内。
例如，对于实施例一中提供的电池组，步骤S40b包括将第二结构件300移动至第一结构件200的凹部200a。
步骤S50c，电池组件100和第一结构件200设于第一空间600s。
步骤S50c的的步骤和实施例可参阅实施例四，此处不再赘述。
例如，实施例中对于第三结构件500、第一结构件200与电池组件100的装配方式可参考该实施例四中第二结构件300、第一结构件200与电池组件100的装配方式，此处不再赘述。
在本申请实施例中，通过上述电池组的制备方法，在将第二结构件300固定于第二电芯12的电芯壳体之后，将第一结构件200沿与第二方向L2相反的方向移动至第一结构件200与电池组件100连接，本申请提供的电池组的制备方法的制备工艺相对简单。另外，在第二方向L2上，减少对第二结构件300的尺寸限制。
需要说明的是，本申请的说明书及其附图中给出了本申请的较佳的实施例，但是，本申请可以通过许多不同的形式来实现，并不限于本说明书所描述的实施例，这些实施例不作为对本申请内容的额外限制，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。并且，上述各技术特征继续相互组合，形成未在上面列举的各种实施例，均视为本申请说明书记载的范围；进一步地，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (31)

  1. 一种电池组，包括电池组件，所述电池组件包括若干沿第一方向叠置的电芯，每一所述电芯均包括电极组件、电芯壳体和电极端子，所述电极端子连接于所述电极组件且自所述电芯壳体的内部延伸出所述电芯壳体，所述电极组件设于所述电芯壳体内；
    其特征在于，
    所述若干电芯包括相邻设置的第一电芯和第二电芯；
    所述电池组还包括第一结构件和第二结构件，沿第二方向观察，所述第一结构件与所述电芯壳体存在重叠，其中，所述第二方向与所述第一方向垂直；
    沿所述第二方向，所述第一结构件相对设置有第一面和第二面，所述第一面面向所述电芯壳体；
    所述第二结构件至少满足以下条件之一:
    (a1)、所述第二结构件配置于所述第一结构件的第一面；
    (b1)、所述第二结构件配置于所述第一电芯的电芯壳体；
    (c1)、所述第二结构件配置于所述第二电芯的电芯壳体。
  2. 根据权利要求1所述的电池组，其特征在于，
    所述第二结构件包括绝缘材料，所述第二结构件的邵氏硬度C在65-90之间。
  3. 根据权利要求1所述的电池组，其特征在于，
    所述第二结构件包括绝缘材料，所述第二结构件的弹性模量的范围为0.5-10Mpa。
  4. 根据权利要求1所述的电池组，其特征在于，所述第二结构件包括泡棉。
  5. 根据权利要求4所述的电池组，其特征在于，所述泡棉包括乙烯醋酸乙烯共聚物。
  6. 根据权利要求4所述的电池组，其特征在于，
    所述泡棉的发泡倍率为2-8倍；
    和/或，所述泡棉的密度为0.1-0.5g/m3。
  7. 根据权利要求1所述的电池组，其特征在于，所述第二结构件包括绝缘材料，所述第二结构件处于被压缩状态。
  8. 根据权利要求1-7任一项所述的电池组，其特征在于，沿所述第一方向，所述第二结构件位于所述第一电芯的电极端子和所述第二电芯的电极端子之间。
  9. 根据权利要求8所述的电池组，其特征在于，
    每一所述电芯的电极端子包括正极端子和负极端子，所述正极端子连接于所述电极组件且自所述电芯壳体的内部延伸出所述电芯壳体，所述负极端子连接于所述电极组件且自所述电芯壳体的内部延伸出所述电芯壳体；
    沿第三方向，所述正极端子和负极端子分离设置，其中，所述第三方向与所述第一方向垂直，所述第三方向与所述第二方向垂直；
    沿所述第一方向，所述第二结构件位于所述第一电芯的第一正极端子和第二电芯的第二负极端子之间。
  10. 根据权利要求9所述的电池组，其特征在于，
    所述第一电芯的第一负极端子与所述第二电芯的第二正极端子连接；
    沿所述第三方向，所述第二结构件与所述第二电芯的第二正极端子分离设置，所述第二结构件与所述第一电芯的第一负极端子分离设置。
  11. 根据权利要求9所述的电池组，其特征在于，沿所述第三方向，所述第一电芯的宽度为w，所述第二结构件的宽度为w1，所述w1和所述w的比值在1/3至3/5之间。
  12. 根据权利要求9所述的电池组，其特征在于，沿所述第三方向，所述第二结构件与所述第二电芯的第二正极端子之间的间距为3-5毫米。
  13. 根据权利要求9所述的电池组，其特征在于，
    沿所述第一方向，所述第一电芯的第一正极端子与所述第二结构件分离设置；
    沿所述第一方向，所述第二电芯的第二负极端子与所述第二结构件分离设置。
  14. 根据权利要求10所述的电池组，其特征在于，所述电池组还包括第一导电件，所述第一导电件的一端连接于所述第一结构件，所述第一导电件的另一端连接于相互连接的所述第一电芯的第一负极端子和所述第二电芯的第二正极端子中的至少一个。
  15. 根据权利要求10所述的电池组，其特征在于，
    所述第一电芯的第一正极端子包括延伸出所述第一电芯的电芯壳体的第一正极连接部，沿所述第一方向，所述第二结构件与所述第一正极连接部分离设置；
    所述第二电芯的第二负极端子包括延伸出所述第二电芯的电芯壳体的第二负极连接部，沿所述第一方向，所述第二结构件与所述第二负极连接部分离设置。
  16. 根据权利要求10所述的电池组，其特征在于，
    每一所述电芯还包括位于电芯壳体的内电极端子，所述内电极端子的一端与所述电极端子连接，所述内电极端子的另一端与所述电极组件连接；
    沿与所述第二方向相反的方向观察，所述第二结构件覆盖所述内电极端子与所述电极端子连接的连接区域。
  17. 根据权利要求1所述的电池组，其特征在于，所述电芯壳体包括沿所述第一方向观察时与所述电极组件有重叠部分的第一部分以及自第一部分延伸形成的第二部分，所述电极端子自第二部分延伸出所述电芯壳体，沿所述第二方向，所述第二部分至少部分位于所述第一结构件与所述第一部分之间，沿所述第一方向，所述第二结构件位于所述第一电芯的第二部分和所述第二电芯的第二部分之间。
  18. 根据权利要求17所述的电池组，其特征在于，沿所述第一方向，所述第二结构件与所述第一电芯的第二部分之间的距离的范围为0.5至2毫米。
  19. 根据权利要求17所述的电池组，其特征在于，沿所述第一方向，所述第二结构件与所述第一电芯的第二部分分离设置。
  20. 根据权利要求17所述的电池组，其特征在于，所述第二结构件配置于所述第一电芯的第一部分。
  21. 根据权利要求1-7任意一项所述的电池组，其特征在于，所述第二结构件粘接于所述第一结构件的第一面。
  22. 根据权利要求1-7任意一项所述的电池组，其特征在于，所述第一结构件的第一面设有凹部，所述第二结构件部分配置于所述凹部。
  23. 根据权利要求1-7任意一项所述的电池组，其特征在于
    所述若干电芯还包括第三电芯，所述第三电芯与所述第一电芯相邻，所述第三电芯位于所述第一电芯远离所述第二电芯的一侧；
    所述电池组还包括第三结构件，沿所述第二方向观察，所述第三结构件与所述第三电芯的电芯壳体存在重叠；
    所述第三结构件至少满足以下条件之一:
    (a2)、所述第三结构件配置于所述第一结构件的第一面；
    (b2)、所述第三结构件配置于所述第一电芯的电芯壳体；
    (c2)、所述第二结构件配置于所述第三电芯的电芯壳体。
  24. 根据权利要求23所述的电池组，其特征在于，
    沿所述第一方向，所述第三结构件位于所述第一电芯的电极端子和所述第三电芯的电极端子之间。
  25. 根据权利要求23所述的电池组，其特征在于，
    所述第一电芯、所述第二电芯和所述第三电芯均包括第一表面，沿所述第二方向，所述第一结构件的第一面与所述第一表面相对设置，所述第一表面包括第一区域和第二区域，沿所述第一方向，所述第一区域和第二区域位于所述第二部分两侧。
  26. 根据权利要求25所述的电池组，其特征在于，
    所述第一电芯的第一区域与所述第二电芯相邻，所述第一电芯的第二区域与所述第三电芯相邻，沿与所述第二方向相反的方向，所述第二结构件的投影部分位于所述第一电芯的第一区域，所述第二结构件的投影部分位于所述第二电芯的第二区域，所述第三结构件的投影部分位于所述第一电芯的第二区域，所述第三结构件的投影部分位于所述第三电芯的第一区域。
  27. 根据权利要求25所述的电池组，其特征在于，沿所述第一方向，所述第三结构件位于所述第一电芯的第二部分和所述第三电芯的第二部分之间。
  28. 根据权利要求25所述的电池组，其特征在于，沿所述第三方向观察，所述第三结构件和第二结构件分离设置。
  29. 根据权利要求25所述的电池组，其特征在于，沿所述第一方向观察，所述第三结构件和第二结构件存在重叠区域。
  30. 根据权利要求1-7任意一项所述的电池组，其特征在于，所述电池组包括电池壳体，所述电池壳体设有第一空间，所述电池组件和第一结构件设于所述第一空间；
    所述电池壳体朝所述第一空间延伸有第一凸部和第二凸部，所述第一凸部和第二凸部相对设置；
    所述第一结构件的一端设于所述第一凸部远离所述电芯壳体的一表面，所述第一结构件的另一端设于所述第二凸部远离所述电芯壳体一表面。
  31. 一种制备电池组的方法，其特征在于，所述方法包括：
    提供电池组件，所述电池组件包括若干沿第一方向依次叠置的电芯，每一所述电芯包括电极组件、电芯壳体和电极端子，所述电极端子连接于所述电极组件且自所述电芯壳体的内部延伸出所述电芯壳体，电极组件设于所述电芯壳体内，所述若干电芯包括第一电芯和第二电芯，其中，所述第一电芯和第二电芯相邻；
    提供第一结构件和第二结构件，沿第二方向，所述第一结构件相对设置有第一面和第二面，所述第一面用于面向所述电芯壳体；
    将所述第二结构件配置于所述第一结构件的第一面；
    将所述第一结构件沿与所述第二方向相反的方向移动至所述第一结构件与电极组件连接。
PCT/CN2022/070321 2022-01-05 2022-01-05 电池组以及制备电池组的方法 WO2023130262A1 (zh)

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US20190386263A1 (en) * 2018-06-14 2019-12-19 Contemporary Amperex Technology Co., Limited Cap assembly and secondary battery
CN212783640U (zh) * 2020-09-29 2021-03-23 珠海冠宇动力电池有限公司 一种电池模组
CN113328189A (zh) * 2021-05-25 2021-08-31 东莞新能安科技有限公司 一种电池组以及用电设备
CN113517510A (zh) * 2021-08-16 2021-10-19 东莞新能安科技有限公司 电池组及用电设备
CN113594618A (zh) * 2021-08-16 2021-11-02 东莞新能安科技有限公司 电池组及用电设备

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US20190386263A1 (en) * 2018-06-14 2019-12-19 Contemporary Amperex Technology Co., Limited Cap assembly and secondary battery
CN212783640U (zh) * 2020-09-29 2021-03-23 珠海冠宇动力电池有限公司 一种电池模组
CN113328189A (zh) * 2021-05-25 2021-08-31 东莞新能安科技有限公司 一种电池组以及用电设备
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