Battery pack

Abstract

The embodiment of the utility model relates to the technical field of energy storage devices, and particularly discloses a battery pack, the battery pack comprises a shell, a battery cell assembly and a first end plate, the shell is provided with an accommodating cavity, the battery cell assembly is arranged in the accommodating cavity, the battery cell assembly comprises a plurality of battery cell monomers, the plurality of battery cell monomers are arranged along a first direction, and the first end plate is arranged in the accommodating cavity. The first end plate is detachably arranged on the inner wall of the shell, and the first end plate is pressed against the battery cell assembly so as to fix the battery cell assembly in the shell. When the battery cell assembly needs to be replaced or maintained, the battery cell assembly can be taken out after the connection between the first end plate and the shell is removed, and compared with the mode that the battery cell assembly and the shell are fixed through mucilage glue, the maintenance difficulty and cost are reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of energy storage devices, in particular to a battery pack. BACKGROUND

[0002] With the rapid development of new energy technology, the performance and safety of battery packs, as core components in application fields such as electric vehicles and energy storage systems, are increasingly valued. Compared with traditional modular battery packs, non-modular battery packs eliminate the module frame, and multiple cell monomers are directly integrated in the battery pack shell, which not only greatly reduces the overall weight and size of the battery pack, making the battery pack have higher energy density, but also simplifies the production process, reduces the assembly process, and effectively reduces the production cost.

[0003] In a non-modular battery pack, the cell monomers are usually fixed in the shell by injection molding. However, after injection molding, the glue is bonded to the cell monomers and the shell, which is not conducive to the replacement and maintenance of the cell monomers, increasing the cost and complexity of later maintenance. UTILITY MODEL CONTENT

[0004] In view of the above problems, embodiments of the present application provide a battery pack which overcomes the above problems or at least partially solves the above problems.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a battery pack, comprising a shell, a cell assembly and a first end plate, the shell is provided with a receiving cavity, the cell assembly is arranged in the receiving cavity, the cell assembly comprises a plurality of cell monomers, the plurality of cell monomers are arranged along a first direction, the first end plate is detachably arranged on the inner wall of the shell, and the first end plate is pressed against the cell assembly to fix the cell assembly in the shell.

[0006] In some embodiments, the first end plate comprises a first limiting portion and a first fixing portion, one end of the first limiting portion is fixed to the first fixing portion, the first limiting portion is pressed against one end of the cell assembly along the first direction, the first fixing portion is provided with a first fixing through hole, and the battery pack further comprises a first threaded member and a first nut, one end of the first threaded member is arranged on the inner wall of the shell, the other end of the first threaded member passes through the first fixing through hole and is screwed with the first nut to fix the first end plate to the shell.

[0007] In some embodiments, the first fixing through hole is a waist-shaped hole, and the first fixing through hole extends along the first direction.

[0008] In some embodiments, the shell is provided with a pressing through hole corresponding to the first limiting portion along the first direction, the pressing through hole being used for an external tool to pass through and press against the first limiting portion of the first end plate to drive the first end plate to move towards the battery cell assembly when the first threaded element and the first nut release the fixation between the first end plate and the shell.

[0009] In some embodiments, the battery pack further comprises a cover plate arranged on the shell, and the cover plate is used to detachably close the pressing through hole.

[0010] In some embodiments, the battery pack further comprises a second end plate detachably arranged on the inner wall of the shell, the first end plate and the second end plate being respectively located at two ends of the battery cell assembly along the first direction, and the first end plate and the second end plate clamping the battery cell assembly.

[0011] In some embodiments, the battery cell assembly further comprises a plurality of pad connectors and a plurality of connecting elements, one pad connector being fixed to a polar terminal of one battery cell monomer, and one connecting element being detachably connected with pad connectors of two adjacent battery cell monomers respectively to electrically connect the plurality of battery cell monomers.

[0012] In some embodiments, the pad connector comprises a bottom plate fixed to the polar terminal of the battery cell monomer and a guide column, one end of the guide column being connected to the bottom plate, and the other end of the guide column extending in a direction away from the bottom plate, the connecting element being provided with a first through hole for inserting the guide column of one pad connector and a second through hole for inserting the guide column of another pad connector.

[0013] In some embodiments, the shell comprises a cover body and a box body, the cover body and the box body being detachably connected, the cover body and the box body jointly forming the accommodation cavity, the battery pack further comprising an electrical assembly and a separation plate, the cover body, the separation plate and the battery cell assembly being arranged in sequence along a direction in which the cover body covers the box body, the separation plate being used to carry the electrical assembly, and the electrical assembly being electrically connected with the battery cell assembly.

[0014] In some embodiments, the battery pack comprises a plurality of first buffer elements, one first buffer element being arranged between two adjacent battery cell monomers, and / or the battery pack comprises a second buffer element arranged between the battery cell assembly and the inner wall of the shell.

[0015] The beneficial effects of the embodiments of the present application are: different from the prior art, the embodiments of the present application provide a battery pack, the battery pack comprises a shell, a battery cell assembly and a first end plate, the shell is provided with a receiving cavity, the battery cell assembly is arranged in the receiving cavity, the battery cell assembly comprises a plurality of battery cell monomers, the plurality of battery cell monomers are arranged along a first direction, the first end plate is detachably arranged on the inner wall of the shell, and the first end plate abuts against the battery cell assembly to fix the battery cell assembly in the shell. When the battery cell assembly needs to be replaced or repaired, the battery cell assembly can be taken out after the connection between the first end plate and the shell is released, compared with the adhesive fixing between the battery cell assembly and the shell, the maintenance difficulty and cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by the drawings without creative labor for those skilled in the art.

[0017] Figure 1 is a perspective view of the battery pack provided by the embodiments of the present application;

[0018] Figure 2 is an exploded view of the battery pack provided by the embodiments of the present application;

[0019] Figure 3 is Figure 1 is a sectional view after being cut along the cutting line AA;

[0020] Figure 4 is a partial exploded view of the battery cell assembly provided by the embodiments of the present application;

[0021] Figure 5 is a perspective enlarged view of the first end plate, the first screw element and the first nut provided by the embodiments of the present application;

[0022] Figure 6 is Figure 3 is a local enlarged view of the B area in FIG. 8;

[0023] Figure 7 is an exploded view of the shell provided by the embodiments of the present application;

[0024] Figure 8 is a perspective enlarged view of the second end plate, the second screw element and the second nut provided by the embodiments of the present application;

[0025] Figure 9 is Figure 3 is a local enlarged view of the C area in FIG. 12. DETAILED DESCRIPTION

[0026] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the present specification is for the purpose of describing specific embodiments only and is not intended to be limiting of the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.

[0028] Please refer to Figure 1 and Figure 2 The battery pack 100 includes a shell 1, a battery cell assembly 2, and a first end plate 3, the battery cell assembly 2 and the first end plate 3 are both arranged in the shell 1, and the first end plate 3 is detachably arranged on the inner wall of the shell 1. The first end plate 3 abuts against one end of the battery cell assembly 2, and the other end of the battery cell assembly 2 abuts against the side wall of the shell 1 or other support structure arranged in the shell 1, so as to fix the battery cell assembly 2 in the shell 1.

[0029] In some embodiments, please refer to Figure 2 and Figure 3 The shell 1 includes a cover 11 and a box 12, the cover 11 and the box 12 are detachably connected, and the cover 11 and the box 12 jointly form a receiving cavity 10. The battery cell assembly 2 and the first end plate 3 are both arranged in the receiving cavity 10, and the first end plate 3 is detachably connected with the box 12. In the example as Figure 2 , the first end plate 3 is detachably connected with the bottom plate 221 of the box 12. In other examples, the first end plate 3 is detachably connected with the side plate of the box 12.

[0030] In some embodiments, please refer to Figure 4 The battery cell assembly 2 includes a plurality of battery cell monomers 21, the plurality of battery cell monomers 21 are arranged along a first direction x and are electrically connected in sequence, and the first end plate 3 abuts against one end of the battery cell assembly 2 along the first direction x. Wherein, the first direction x refers to the direction of parallel arrangement of the plurality of battery cell monomers 21, and the first direction x is perpendicular to the direction in which the cover 11 covers the box 12.

[0031] In some embodiments, please continue to refer to Figure 4The plurality of battery monomers 21 each include two polarity terminals 211 of different polarities, the polarity terminals 211 on the battery monomers 21 are provided with the plurality of pad connectors 22, one pad connector 22 is fixed to one polarity terminal 211 of one battery monomer 21, and one connecting piece 23 is separately connected to the pad connectors 22 of two adjacent battery monomers 21. The two pad connectors 22 connected by one connecting piece 23 can be fixed to the polarity terminals 211 of the same polarity respectively or the polarity terminals 211 of different polarities respectively, so that the plurality of battery monomers 21 in the battery assembly 2 can be configured in series, parallel, or series-parallel hybrid mode. The adjacent battery monomers 21 are electrically connected by the connecting piece 23 and the pad connector 22 on the respective one polarity terminal 211, and the separable connection between the connecting piece 23 and the pad connector 22 improves the flexibility and maintainability of the battery assembly 2. When facing different application scenarios and energy demands, the battery pack 100 can be upgraded or modified by increasing or reducing the battery monomers 21 and reconfiguring the connecting pieces 23; and when one or more battery monomers 21 fail or performance declines, the defective battery monomers 21 can be removed for repair or replacement after disconnecting the corresponding connecting pieces 23.

[0032] In some embodiments, the pad connector 22 includes a bottom plate 221 and a guide column 222, the bottom plate 221 is fixed to the polarity terminal 211 of the battery monomer 21, one end of the guide column 222 is connected to the bottom plate 221, and the other end of the guide column 222 extends away from the bottom plate 221. The connecting piece 23 is provided with a first through hole 231 and a second through hole 232, and the first through hole 231 and the second through hole 232 are respectively located at two ends of the connecting piece 23 along the first direction x. When the connecting piece 23 connects two pad connectors 22, the guide column 222 of one pad connector 22 is inserted into the first through hole 231, and the guide column 222 of the other pad connector 22 is inserted into the second through hole 232. The cooperation of the guide column 222 and the through hole not only ensures the stability of the connection between the connecting piece 23 and the pad connector 22, but also makes the connection process more convenient and reduces the operation difficulty.

[0033] In some embodiments, one connecting piece 23 includes two first through holes 231 and two second through holes 232, and correspondingly, one pad connector 22 includes two guide columns 222.

[0034] In some embodiments, at least one of the first through hole 231 and the second through hole 232 is a waist-shaped hole and extends along the first direction x, so that the connecting piece 23 has a certain adjustment space when cooperating with the pad connector 22, which can adapt to the slight positional deviation between the battery monomers 21 due to manufacturing tolerances or installation errors, thereby ensuring the flexibility and fault tolerance of the battery assembly 2 during assembly.

[0035] In some embodiments, the guide post 222 of the pad connector 22 is screwed and fixed after passing through the first through hole 231 or the second through hole 232 of the connecting piece 23.

[0036] In some embodiments, referring to Figure 5 and Figure 6 , the first end plate 3 comprises a first limiting part 31 and a first fixing part 32, one end of the first limiting part 31 is fixed to the first fixing part 32, the first limiting part 31 is connected to the first fixing part 32 vertically or obliquely, and the first fixing part 32 is detachably fixed to the inner wall of the shell 1. The first limiting part 31 abuts against one end of the battery cell assembly 2 along the first direction x, and the first fixing part 32 is provided with a first fixing through hole 320. The battery pack 100 further comprises a first screw connector 33 and a first nut 34. One end of the first screw connector 33 is arranged on the inner wall of the shell 1, and the other end of the first screw connector 33 is screwed with the first nut 34 after passing through the first fixing through hole 320, so as to fix the first end plate 3 to the shell 1. In the example as shown in Figure 6 , the first fixing part 32 is detachably connected to the bottom plate of the box body 12, and one end of the first screw connector 33 abuts against the bottom plate of the box body 12. In other examples, the first fixing part 32 is detachably connected to the side plate of the box body 12, and one end of the first screw connector 33 abuts against the side plate of the box body 12.

[0037] In some embodiments, the first fixing through hole 320 is a waist-shaped hole, and the first fixing through hole 320 extends along the first direction x, thereby providing a certain adjustment space for the connection between the first end plate 3 and the shell 1, allowing fine adjustment according to the actual size and position of the battery cell assembly 2, and enhancing the flexibility and adaptability of the assembly of the battery pack 100.

[0038] In some embodiments, referring to Figure 7 , the shell 1 is provided with an abutting through hole 120, which is located on the side plate of one end of the box body 12 along the first direction x. Along the first direction x, the abutting through hole 120 corresponds to the first limiting part 31. When the first screw connector 33 and the first nut 34 are disengaged from the fixing between the first end plate 3 and the shell 1, the abutting through hole 120 is used for the external tool to pass through and abut against the first limiting part 31 of the first end plate 3, so as to drive the first end plate 3 to move towards the battery cell assembly 2, thereby facilitating the installation or adjustment of the position of the battery cell assembly 2, and ensuring that the first end plate 3 can abut against the battery cell assembly 2 tightly, maintaining the stability and safety of the battery cell assembly 2 in the shell 1.

[0039] It should be noted that the external tool can be any tool capable of entering and exiting the abutting through hole 120 and applying pressure to the first end plate 3, such as an abutting rod or a screwdriver, etc.

[0040] In some embodiments, referring to Figure 7The battery pack 100 further comprises a cover plate 13 arranged on the shell 1, and the cover plate 13 is used to detachably close the through hole 120, so as to protect the cell assembly 2 from external dust, moisture or other contaminants when the first end plate 3 is not needed to be operated through the through hole 120, and improve the sealing performance and protection level of the battery pack 100.

[0041] In some embodiments, referring to Figure 8 and Figure 9 , the battery pack 100 further comprises a second end plate 4 which is detachably arranged on the inner wall of the shell 1. The first end plate 3 and the second end plate 4 are respectively located at two ends of the cell assembly 2 along the first direction x, and the first end plate 3 and the second end plate 4 clamp the cell assembly 2, so as to stably define the cell assembly 2 in the accommodation cavity 10. Compared with the other end of the cell assembly 2 directly abutting against the side wall of the shell 1, the second end plate 4 abuts against the other end of the cell assembly 2, which further disperses the pressure received by the cell assembly 2 and reduces the risk of deformation or damage of the shell 1. In examples as shown in Figure 9 , the second end plate 4 is detachably connected with the bottom plate of the box body 12. In other examples, the second end plate 4 is detachably connected with the side plate of the box body 12.

[0042] In some embodiments, the second end plate 4 comprises a second limiting portion 41 and a second fixing portion 42, the second limiting portion 41 is connected with the second fixing portion 42 perpendicularly or obliquely, the second limiting portion 41 abuts against the other end of the cell assembly 2 along the first direction x, and the second fixing portion 42 is provided with a second fixing through hole 420. The shell 1 is provided with a mounting hole 121, and the battery pack 100 further comprises a second screw joint 43 and a second nut 44. The second screw joint 43 is screwed with the second nut 44 after sequentially penetrating through the second fixing through hole 420 and the mounting hole 121, so as to fix the second end plate 4 to the shell 1. In examples as shown in Figure 9 , the second fixing portion 42 is detachably fixed to the bottom plate of the box body 12, and the second mounting hole 121 is located on the bottom plate of the box body 12. In other examples, the second fixing portion 42 is detachably fixed to the side plate of the box body 12, and the second mounting hole 121 is located on the side plate of the box body 12.

[0043] In some embodiments, the second fixing through hole 420 can be a waist-shaped hole, and the second fixing through hole 420 extends along the first direction x to provide an adjustment space for the connection between the second end plate 4 and the shell 1, thereby further improving the flexibility of assembly of the battery pack 100.

[0044] In some embodiments, referring to Figure 2 , the battery pack 100 further comprises an insulating plate 5 arranged between the cell assembly 2 and the first end plate 3 and between the cell assembly 2 and the second end plate 4.

[0045] In some embodiments, referring toFigure 2 and Figure 3 The battery pack 100 further comprises an electrical assembly 6 and a partition plate 7, and the cover 11, the partition plate 7 and the cell assembly 2 are arranged in sequence in the direction of covering the box body 12 by the cover 11. The partition plate 7 is used to carry the electrical assembly 6, and the electrical assembly 6 is electrically connected with the cell assembly 2. The electrical assembly 6 comprises a connector 61, electronic devices (not shown in the figure) and a connection harness (not shown in the figure). The connector 61 is arranged in the box body 12, and is used to connect the battery pack 100 and an external circuit. The electronic devices can comprise a battery management system (BMS) unit, a voltage detector, a temperature sensor, a protection circuit and the like. The connection harness is used to connect the electronic devices and the connector 61, the electronic devices and the cell assembly 2, so as to realize the functions of management, monitoring and protection of the electric energy of the battery pack 100. The partition plate 7 divides the receiving cavity 10 into a cell area and an electrical area, reduces the risk caused by the direct contact between the cell assembly 2 and the electrical assembly 6, improves the safety performance of the battery pack 100, optimizes the internal space layout, and makes the structure more compact.

[0046] In some embodiments, referring to Figure 4 The cell assembly 2 further comprises a collection terminal 24 arranged in the connecting piece 23. The collection terminal 24 is used to collect the voltage, temperature and other state information of the cell monomer 21, and transmit the information to the electronic devices through the connection harness.

[0047] In some embodiments, referring to Figure 2 and Figure 3 The cell monomer 21 is provided with a burst valve towards the top of the cover 11. The battery pack 100 further comprises a protective cover 8 arranged between the partition plate 7 and the cell assembly 2. The protective cover 8 is provided with a plurality of gas vent holes 81. When the internal pressure of the cell monomer 21 abnormally rises, the burst valve will open to release the high-pressure gas inside. At this time, the gas is discharged through the gas vent holes 81 on the protective cover 8, which reduces the risk of explosion or fire caused by the sharp increase of the internal pressure of the battery pack 100, and further improves the safety of the battery pack 100.

[0048] In some embodiments, referring to Figure 4 The battery pack 100 comprises a plurality of first buffer pieces 9. A first buffer piece 9 is arranged between two adjacent cell monomers 21. The first buffer piece 9 plays a role of physical buffering and heat conduction between the cell monomers 21, reduces the risk of damage of the cell monomers 21 caused by mutual collision during transportation or use, and promotes the heat transfer between the cell monomers 21 to improve the heat dissipation efficiency. A first buffer piece 9 is fixed to a cell monomer 21 by adhesive or other means. When a single cell monomer 21 is replaced or maintained, the first buffer piece 9 can be taken out or reinstalled together with the cell monomer 21, which simplifies the maintenance process of the battery pack 100.

[0049] In some embodiments, the battery pack 100 further comprises a second buffer (not shown) arranged between the cell assembly 2 and the inner wall of the shell 1, specifically, arranged between the cell assembly 2 and the side plate and the bottom plate 221 of the box body 12. The second buffer is used to reduce the mechanical impact of the shell 1 on the cell assembly 2, while enhancing the heat exchange between the cell assembly 2 and the shell 1, improving the mechanical stability and heat dissipation performance of the battery pack 100.

[0050] It should be noted that the first buffer 9 and the second buffer are both elastic materials with good thermal conductivity, such as foam, rubber, etc.

[0051] In some embodiments, referring to Figure 7 , the shell 1 further comprises a handle 14 arranged at both ends of the box body 12 along the first direction x, so as to facilitate the installation and carrying of the battery pack 100.

[0052] In some embodiments, the number of cell assemblies 2 is two or more, one cell assembly 2 comprises a plurality of cell monomers 21 connected in sequence along the first direction x, and the cell assemblies 2 are arranged along the first direction x or perpendicular to the first direction x and connected in sequence.

[0053] In the embodiments of the present application, the battery pack 100 comprises a shell 1, a cell assembly 2 and a first end plate 3, the shell 1 is provided with a receiving cavity 10, the cell assembly 2 and the first end plate 3 are arranged in the receiving cavity 10, the cell assembly 2 comprises a plurality of cell monomers 21 arranged along the first direction x, and the first end plate 3 is detachably arranged on the inner wall of the shell 1. The first end plate 3 is pressed against one end of the cell assembly 2 along the first direction x to fix the cell assembly 2 in the shell 1. When it is necessary to replace or repair the cell assembly 2, the cell assembly 2 can be taken out after the connection between the first end plate 3 and the shell 1 is released, which reduces the difficulty and cost of maintenance compared with the adhesive fixing between the cell assembly 2 and the shell 1.

[0054] It should be noted that the present application provides a preferred embodiment of the present application in the specification and drawings thereof, but the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, each of the above technical features continues to be combined, forming various embodiments not listed above, which are considered to be within the scope of the present application. Furthermore, those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes shall fall within the scope of the claims of the present application.

Claims

1. A battery pack, characterized in that: include: The housing is provided with a receiving cavity; A battery cell assembly is disposed in the receiving cavity, wherein the battery cell assembly includes a plurality of battery cell units, and the plurality of battery cell units are arranged along a first direction; The first end plate is detachably arranged on the inner wall of the shell, and the first end plate presses against the battery core assembly to fix the battery core assembly in the shell.

2. The battery pack according to claim 1, wherein: The first end plate includes a first limiting portion and a first fixing portion, one end of the first limiting portion is fixed to the first fixing portion, the first limiting portion presses against one end of the battery cell assembly along the first direction, and the first fixing portion is provided with a first fixing through hole; The battery pack also includes a first screw connector and a first nut. One end of the first screw connector is arranged on the inner wall of the shell, and the other end of the first screw connector passes through the first fixing through hole and is screwed to the first nut to fix the first end plate to the shell.

3. The battery pack according to claim 2, characterized in that , The first fixing through hole is a waist-shaped hole, and the first fixing through hole extends along the first direction.

4. The battery pack according to claim 3, wherein: The shell is provided with a pressing through hole, and along the first direction, the pressing through hole corresponds to the first limiting portion. The pressing through hole is used for allowing an external tool to pass through and press against the first limiting portion of the first end plate when the first screw connector and the first nut release the fixation between the first end plate and the shell, so as to drive the first end plate to move toward the battery cell assembly.

5. The battery pack according to claim 4, characterized in that: The battery pack further includes a cover plate, which is disposed on the shell and is used to detachably close the pressing through hole.

6. The battery pack according to any one of claims 1 to 5, characterized in that: The battery pack also includes a second end plate, which is detachably arranged on the inner wall of the shell. The first end plate and the second end plate are respectively located at both ends of the battery cell assembly along the first direction, and the first end plate and the second end plate clamp the battery cell assembly.

7. The battery pack according to claim 1, wherein: The battery cell assembly further includes a plurality of pads and a plurality of connectors, wherein one pad is fixed to a polarity terminal of a battery cell, and one connector is detachably connected to the pads of two adjacent battery cells to electrically connect the plurality of battery cells.

8. The battery pack according to claim 7, characterized in that: The pad includes a bottom plate and a guide post, wherein the bottom plate is fixed to the polarity terminal of the battery cell, one end of the guide post is connected to the bottom plate, and the other end of the guide post extends in a direction away from the bottom plate; The connecting member is provided with a first through hole and a second through hole. The first through hole is used for inserting the guide post of one of the pad connectors, and the second through hole is used for inserting the guide post of the other pad connector.

9. The battery pack according to claim 1, wherein: The housing comprises a cover and a box body, the cover and the box body are detachably connected, and the cover and the box body together form the receiving cavity; The battery pack also includes an electrical component and an isolation plate. Along the direction in which the cover covers the box body, the cover, isolation plate and battery cell assembly are arranged in sequence. The isolation plate is used to support the electrical component, and the electrical component is electrically connected to the battery cell assembly.

10. The battery pack according to claim 1, wherein: The battery pack includes a plurality of first buffer members, wherein a first buffer member is disposed between two adjacent battery cells; and / or, The battery pack includes a second buffer member, which is arranged between the battery cell assembly and the inner wall of the shell.

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