Battery box body, battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery box body, a battery pack and electric equipment, the battery box body comprises a box body, a mounting part, a first support and a second support, the mounting part is positioned in the box body and is fixedly connected with the box body, and the first support and the second support are both arranged in the box body; the first bracket and the second bracket are oppositely arranged along a first direction, a mounting space for accommodating a battery cell is formed between the first bracket and the second bracket, and two ends of the battery cell respectively abut against the first bracket and the second bracket when the battery cell is accommodated in the mounting space; at least one of the first support and the second support is detachably connected with the installation part, and when only one of the first support and the second support is detachably connected with the installation part, the first support and the second support are detachably connected. According to the battery box body, the battery pack and the electric equipment disclosed by the utility model, the risk of part failure caused by foaming can be reduced, the maintenance is easy, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box, a battery pack and electrical equipment. Background Art

[0002] Lithium-ion batteries have been widely used due to their advantages such as high energy density, low self-discharge, and wide operating temperature range. For example, some electric vehicles are equipped with a battery pack. The battery pack is equipped with multiple cells, which are connected in series and parallel to provide power for the entire vehicle.

[0003] Taking cylindrical cells as an example, due to the unique cylindrical structure of cylindrical cells, in order to ensure the stability of cylindrical cells in the battery pack and avoid problems such as shaking and displacement, potting glue is usually used to fix them. The potting glue is liquid and has a certain fluidity before curing, and after curing, it can well fix the cylindrical cells and the battery pack box. However, there are not only cylindrical cells in the battery pack, but also high-voltage copper busbars, collection welding points, etc. First, during the foaming process of the potting glue, the potting glue will exert force on these structural components, and there is a risk of failure. Secondly, after curing, it is difficult to disassemble the components, which affects after-sales maintenance. Finally, after curing, the weight of the components in the pack basically acts on the bottom plate of the battery pack box, affecting the connection effect and flatness of the bottom plate of the box. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problems that the potting glue in the existing battery box easily causes components to fail and is difficult to disassemble, and the connection effect and flatness of the box bottom plate cannot meet the requirements. A battery box, battery pack and electrical equipment are provided, which can reduce the risk of component failure caused by foaming, are easy to repair and extend the service life.

[0005] The utility model provides a battery box, including a box body; a mounting piece, the mounting piece is located in the box body and fixedly connected thereto; a first bracket, the first bracket is arranged in the box body; a second bracket, the second bracket is arranged in the box body; wherein the first bracket and the second bracket are arranged opposite to each other along a first direction, and an installation space for accommodating a battery cell is formed therebetween, and when the battery cell is accommodated in the installation space, the two ends of the battery cell respectively abut the first bracket and the second bracket; at least one of the first bracket and the second bracket is detachably connected to the mounting piece, and when only one of the first bracket and the second bracket is detachably connected to the mounting piece, the first bracket and the second bracket are detachably connected.

[0006] In one embodiment of the utility model, the box body includes a first cavity wall; the mounting member includes a first mounting component, the first mounting component is connected to the first cavity wall; the first bracket is provided with a first connecting member; the second bracket is provided with a second connecting member corresponding to the first connecting member, the second connecting member respectively connects the first connecting member and the first mounting member.

[0007] In one embodiment of the utility model, the box body includes a bottom wall, and a second cavity wall and a third cavity wall that are relatively arranged; the mounting member includes a mounting beam, and the mounting beam is respectively connected to the bottom wall, the second cavity wall and the third cavity wall; a third connecting member is provided on the first bracket, and the third connecting member is connected to the mounting beam.

[0008] In one embodiment of the utility model, the mounting member further includes a second mounting component, and the second mounting component is connected to the mounting crossbeam; a fourth connecting member is provided on the second bracket, and the fourth connecting member is connected to the second mounting component.

[0009] In an embodiment of the present utility model, a first connecting adhesive is provided on the second bracket, and the first connecting adhesive is used to connect the second bracket and the box body.

[0010] In one embodiment of the utility model, two groups of the first connecting adhesive are provided, and each group of the first connecting adhesive is provided with a strip structure; along the width extension direction of the box body, the two groups of the first connecting adhesive are sequentially arranged on both sides of the second bracket, and the extension direction of each group of the first connecting adhesive is parallel to the length extension direction of the box body.

[0011] The utility model also provides a battery pack, comprising a battery cell and the battery box body described in any one of the above items, wherein the battery cell is arranged in the installation space.

[0012] In an embodiment of the present invention, a receiving groove is provided on the second bracket, a second connecting glue is provided in the receiving groove, and the second connecting glue connects the battery cell and the second bracket respectively.

[0013] In one embodiment of the utility model, the first bracket is provided with a plurality of first mounting grooves distributed in an array; the second bracket is provided with a plurality of second mounting grooves distributed in an array, the second mounting grooves correspond to the first mounting grooves one by one, and the two ends of the battery cell are respectively arranged in the second mounting grooves and the first mounting grooves and are fastened.

[0014] The utility model also provides an electrical device, comprising any one of the battery packs described above.

[0015] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0016] The battery box described in the utility model replaces the potting glue to fix the battery cell by setting a mounting part, a first bracket and a second bracket. Firstly, the stress effect on other components in the box body during the foaming process of the potting glue is eliminated, and the risk of component failure is reduced. Secondly, the detachable connection method improves the maintainability after sales, and is convenient for the staff to inspect, maintain and replace the corresponding components. Finally, the mounting part can share the force exerted by the battery cell on the bottom guard plate of the box body, reducing the occurrence of problems such as deformation of the bottom guard plate due to stress and connection failure, and extending the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the explosion structure of the battery box in the preferred embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the box body from a first viewing angle in a preferred embodiment of the utility model;

[0020] Figure 3 This is a second perspective structural diagram of the box body in the preferred embodiment of the utility model;

[0021] Figure 4 This is one of the cross-sectional structural schematic diagrams of the battery box in the preferred embodiment of the utility model;

[0022] Figure 5 This is one of the partial cross-sectional structural schematic diagrams of the battery box in the preferred embodiment of the utility model;

[0023] Figure 6 This is the second schematic diagram of the partial cross-sectional structure of the battery box in the preferred embodiment of the utility model;

[0024] Figure 7 This is the second schematic cross-sectional structure diagram of the battery box in the preferred embodiment of the utility model;

[0025] Figure 8 This is the third schematic diagram of the partial cross-sectional structure of the battery box in the preferred embodiment of the utility model;

[0026] Fig. 9 This is the third schematic diagram of the cross-sectional structure of the battery box in the preferred embodiment of the utility model.

[0027] Explanation of the figure marks in the specification: D1, first direction; 10, box body; 11, first cavity wall; 12, bottom wall; 13, second cavity wall; 14, third cavity wall; 20, mounting member; 21, first mounting component; 22, mounting beam; 23, second mounting component; 30, first bracket; 31, first connecting member; 32, third connecting member; 33, first mounting groove; 40, second bracket; 41, second connecting member; 42, fourth connecting member; 43, accommodating groove; 44, second mounting groove; 50, mounting space; 61, first fastener; 62, second fastener; 63, third fastener; 71, first connecting glue; 72, second connecting glue. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1 and Figure 4 As shown, the utility model discloses a battery box, including a box body 10, a mounting member 20, a first bracket 30 and a second bracket 40.

[0030] The box body 10 is used to accommodate various components; preferably, the box body 10 is set to a rectangular parallelepiped structure, and a rectangular parallelepiped cavity is provided in the box body 10. The mounting member 20 is located in the box body 10 and is fixedly connected to the box body 10. The mounting member 20 is used to cooperate with the first bracket 30 and the second bracket 40 to replace the potting glue to install the battery cell. Those skilled in the art can set the specific shape, quantity, position, etc. of the mounting member 20 according to actual needs, as long as the mounting member 20 can be used to cooperate with the first bracket 30 and the second bracket 40 to replace the potting glue to install the battery cell.

[0031] The first bracket 30 and the second bracket 40 are used to install the battery cells, and the first bracket 30 and the second bracket 40 are both arranged in the box body 10. Specifically, the first bracket 30 and the second bracket 40 are arranged opposite to each other along the first direction D1, and an installation space 50 for accommodating the battery cells is formed between the first bracket 30 and the second bracket 40. Figure 4In the figure, the installation space 50 is indicated by a dotted line. Those skilled in the art can set the first direction D1 according to actual needs. Preferably, the first direction D1 is parallel to the height direction of the box body 10. When the battery cell is accommodated in the installation space 50, the two ends of the battery cell respectively abut the first bracket 30 and the second bracket 40 to fix and protect the battery cell. Those skilled in the art can set the specific structure of the first bracket 30 and the second bracket 40 according to actual needs, and the method of fixing the battery cell, such as clamping, bonding, etc. By setting this structure, the potting glue can be replaced to fix the battery cell. The first bracket 30 and the second bracket 40 are solid structures and will not foam, which avoids the problem that the potting glue is prone to exerting force on other components in the box body 10 during foaming, causing them to fail.

[0032] At least one of the first bracket 30 and the second bracket 40 is detachably connected to the mounting member 20. A person skilled in the art can, according to actual needs, detachably connect only the first bracket 30 to the mounting member 20, detachably connect only the second bracket 40 to the mounting member 20, or detachably connect both the first bracket 30 and the second bracket 40 to the mounting member 20. A person skilled in the art can set a specific detachable connection method according to actual needs, such as a snap connection, a threaded connection, etc. When only one of the first bracket 30 and the second bracket 40 is detachably connected to the mounting member 20, the first bracket 30 and the second bracket 40 are detachably connected to ensure that the battery cell can be assembled and repaired. When both the first bracket 30 and the second bracket 40 are detachably connected to the mounting member 20, a person skilled in the art can detachably connect the first bracket 30 and the second bracket 40, or not connect them.

[0033] By setting up this structure, while replacing the potting glue to fix the battery core, it is possible to transfer part of the force applied by the battery core, such as gravity, from the bottom guard plate of the original box body 10 to other components, sharing the force that the bottom guard plate needs to bear, effectively avoiding the occurrence of problems such as deformation of the bottom guard plate due to force and connection failure, and extending the overall service life. The detachable connection method can ensure that each component can be easily disassembled and replaced, and is easy to carry out after-sales maintenance.

[0034] In actual use, the battery cell is placed in the installation space 50 between the first bracket 30 and the second bracket 40, so that the two ends of the battery cell respectively abut the first bracket 30 and the second bracket 40. Then, the corresponding bracket is detachably connected to the mounting member 20 to complete the assembly.

[0035] The battery box described in the utility model replaces the potting glue to fix the battery cell by providing a mounting part 20, a first bracket 30 and a second bracket 40. Firstly, the stress effect on other components in the box body 10 during the foaming process of the potting glue is eliminated, and the risk of component failure is reduced. Secondly, the detachable connection method improves the maintainability after sales, and facilitates the staff to inspect, maintain and replace the corresponding components. Finally, the mounting part 20 can share the force exerted by the battery cell on the bottom guard plate of the box body 10, reducing the occurrence of problems such as deformation of the bottom guard plate due to stress and connection failure, and extending the overall service life.

[0036] Reference Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of the battery box described in the utility model, the box body 10 includes a first cavity wall 11; preferably, the first cavity wall 11 is set as one of the side walls on both sides of the box body 10 along the direction of its own length extension. The mounting member 20 includes a first mounting component 21, and the first mounting component 21 is connected to the first cavity wall 11. The first bracket 30 is provided with a first connecting member 31; the second bracket 40 is provided with a second connecting member 41 corresponding to the first connecting member 31, and the second connecting member 41 is respectively connected to the first connecting member 31 and the first mounting component 21. By setting up this structure, on the premise of ensuring that the second bracket 40 can be detachably connected to the first mounting component 21 through the second connecting member 41, the first bracket 30 is also detachably connected to the second bracket 40, which is convenient for after-sales maintenance. The mechanical fixing structure can effectively ensure the connection effect between the bracket and the box body 10, realize the fixation of the battery cell, and reduce the risk of component failure caused by the stress of the potting glue. When in use, a part of the force applied by the battery cell to the bottom guard plate of the box body can be shared to other parts of the box body 10, reducing the occurrence of problems such as deformation of the bottom guard plate due to force and connection failure, and extending the overall service life. Preferably, the first connecting member 31, the second connecting member 41 and the first mounting component 21 are detachably connected through the first fastener 61, and the first fastener 61 includes a bolt. Those skilled in the art can set the specific shape, installation position and number of the first mounting component 21, the first connecting member 31 and the second connecting member 41 according to actual needs, and will not be repeated here.

[0037] Reference Figure 3 , Figure 4 and Figure 6As shown, in some embodiments of the battery box of the utility model, the box body 10 includes a bottom wall surface 12, and a second cavity wall surface 13 and a third cavity wall surface 14 arranged opposite to each other. Preferably, the bottom wall surface 12 is set as the wall surface corresponding to the bottom guard plate of the box body 10, and the second cavity wall surface 13 and the third cavity wall surface 14 are set as two side walls on both sides of the box body 10 along the extension direction of its own width, and the second cavity wall surface 13 and the third cavity wall surface 14 are both connected to the first cavity wall surface 11. The mounting member 20 includes a mounting crossbeam 22, and the mounting crossbeam 22 is respectively connected to the bottom wall surface 12, the second cavity wall surface 13 and the third cavity wall surface 14. The first bracket 30 is provided with a third connecting member 32, and the third connecting member 32 is connected to the mounting crossbeam 22. By setting this structure, a part of the force applied by the battery cell to the bottom guard plate of the box body can be shared to other parts of the box body 10, reducing the occurrence of problems such as deformation of the bottom guard plate under stress and connection failure, and extending the overall service life. On the basis of setting the first connecting member 31, the second connecting member 41 and the first mounting component 21, setting the third connecting member 32 and the mounting crossbeam 22 can further strengthen the connection effect between the first bracket 30 and the box body 10, realize the fixation of the battery cell, and reduce the risk of component failure caused by the stress of the potting glue. Preferably, the third connecting member 32 and the mounting crossbeam 22 are detachably connected through the second fastener 62, which is convenient for after-sales maintenance; the second fastener 62 includes a bolt. Those skilled in the art can set the specific shape, installation position and quantity of the third connecting member 32 according to actual needs, which will not be repeated.

[0038] Further, see Figure 3 , Figure 7 and Figure 8 As shown, in some embodiments of the battery box of the utility model, the mounting member 20 further includes a second mounting member 23, and the second mounting member 23 is connected to the mounting crossbeam 22. A fourth connecting member 42 is provided on the second bracket 40, and the fourth connecting member 42 is connected to the second mounting member 23. By setting this structure, a part of the force applied by the battery cell to the bottom guard plate of the box body can be shared to other parts of the box body 10, reducing the occurrence of problems such as deformation of the bottom guard plate under stress and connection failure, and extending the overall service life. On the basis of setting the first connecting member 31, the second connecting member 41 and the first mounting member 21, the fourth connecting member 42 and the mounting crossbeam 22 are set to further strengthen the connection effect between the second bracket 40 and the box body 10, realize the fixation of the battery cell, and reduce the risk of component failure caused by the stress of the potting glue. Preferably, the fourth connecting member 42 and the second mounting member 23 are detachably connected by the third fastener 63, which is convenient for after-sales maintenance; the third fastener 63 includes a bolt. Those skilled in the art can set the specific shape, installation position and number of the fourth connecting member 42 and the second mounting member 23 according to actual needs, and will not be repeated.

[0039] Reference Fig. 9As shown, in some embodiments of the battery box of the utility model, a first connecting glue 71 is provided on the second bracket 40, and the first connecting glue 71 is used to connect the second bracket 40 and the box body 10. Considering that the second bracket 40 is arranged on the side of the bottom guard plate close to the box body 10, the possibility of disassembly is small. Therefore, by setting the first connecting glue 71 to connect the second bracket 40 and the box body 10 respectively, the connection effect is enhanced, the occurrence of problems such as bracket shaking is effectively avoided, and the overall safety and stability are improved. Those skilled in the art can set the amount and position of the first connecting glue 71 according to actual needs.

[0040] Preferably, two groups of first connecting adhesives 71 are provided, and each group of first connecting adhesives 71 is provided as a strip structure. Along the width extension direction of the box body 10, two groups of first connecting adhesives 71 are sequentially provided on both sides of the second bracket 40, and the extension direction of each group of first connecting adhesives 71 is parallel to the length extension direction of the box body 10. By providing the first connecting adhesive 71 of this structure, the amount of the first connecting adhesive 71 can be reduced while ensuring a good connection effect between the second bracket 40 and the box body 10, thereby improving assembly efficiency and reducing overall weight. Preferably, the first connecting adhesive 71 is provided as a structural adhesive.

[0041] The utility model discloses a battery pack, including a battery cell and a battery box as described in any one of the above embodiments, wherein the battery cell is arranged in an installation space 50. Since the battery pack of the utility model includes the battery box as described in the above embodiments, the battery pack also has all the beneficial effects, which will not be described in detail.

[0042] Reference Figure 1 and Figure 4 As shown, in some embodiments of the battery pack described in the utility model, a receiving groove 43 is provided on the second bracket 40, and a second connecting glue 72 is provided in the receiving groove 43, and the second connecting glue 72 connects the battery cell and the second bracket 40 respectively. By providing the second connecting glue 72, the battery cell and the second bracket 40 can be effectively connected to prevent the battery cell from shaking, displacement and other problems, thereby improving safety and stability. The second connecting glue 72 is provided in the receiving groove 43, which is convenient for gluing and can prevent the second connecting glue 72 from overflowing and affecting other components in the box body 10, thereby reducing the risk of failure of other components. Preferably, the second connecting glue 72 is configured as a structural glue.

[0043] Reference Figure 1 and Figure 4As shown, in some embodiments of the battery pack described in the utility model, a plurality of first mounting grooves 33 distributed in an array are provided on the first bracket 30; a plurality of second mounting grooves 44 distributed in an array are provided on the second bracket 40, and the second mounting grooves 44 correspond to the first mounting grooves 33 one by one, and the two ends of the battery cell are respectively arranged in the second mounting grooves 44 and the first mounting grooves 33 and fastened. By setting this structure, it is possible to facilitate the rapid assembly and fixation of the battery cell, and improve the assembly efficiency and fixing effect. Those skilled in the art can set the specific shape, size, number and arrangement of the mounting grooves according to actual needs, and will not be repeated. Preferably, the first mounting groove 33 is correspondingly provided with a through hole that passes through the first bracket 30, so as to facilitate the connection of the battery cell with other components. Preferably, the mounting groove is set at the same time on the basis of setting the accommodating groove 43 to achieve the best fixing effect.

[0044] The utility model discloses an electric device, including the battery pack described in any one of the above embodiments. Since the electric device described in the utility model includes the battery pack described in the above embodiments, the electric device also has all the beneficial effects, which will not be described in detail. Since the main design point of the utility model is the battery box, other structures of the electric device, such as the electrical connection part and the mechanical structure part of the electric device, will not be described in detail.

[0045] Electrical equipment may be automobiles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, etc. Automobiles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present invention do not impose any special restrictions on the above-mentioned electrical equipment.

[0046] Working principle:

[0047] First, the second bracket 40 and the box body 10 are connected by the first connecting member 31, and at the same time, the fourth connecting member 42 of the second bracket 40 and the mounting crossbeam 22 of the box body 10 are connected by the third fastener 63. After the assembly is completed, the battery cells are placed in the second mounting groove 44 in sequence, and the second connecting glue 72 is injected into the accommodating groove 43 to connect the battery cells and the second bracket 40. Finally, the first bracket 30 is installed. The first connecting member 31, the second connecting member 41 and the first mounting member 21 are connected by the first fastener 61, and the third connecting member 32 and the mounting crossbeam 22 are connected by the second fastener 62. It can eliminate the stress effect on other components in the box body 10 during the foaming process of the potting glue, and reduce the risk of component failure. The detachable connection method improves the maintainability of after-sales service and facilitates the staff to inspect, maintain and replace the corresponding components. The mounting member 20 shares the force exerted by the battery cell on the bottom guard plate of the box body 10, reduces the occurrence of problems such as deformation of the bottom guard plate under stress and connection failure, and extends the overall service life.

[0048] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A battery box, characterized in that: include: Box body(10); A mounting member (20), the mounting member (20) being located inside the box body (10) and fixedly connected thereto; A first bracket (30), the first bracket (30) being arranged in the box body (10); A second bracket (40), the second bracket (40) being arranged in the box body (10); The first bracket (30) and the second bracket (40) are arranged opposite to each other along a first direction (D1), and an installation space (50) for accommodating a battery cell is formed therebetween; when the battery cell is accommodated in the installation space (50), two ends of the battery cell abut against the first bracket (30) and the second bracket (40) respectively; At least one of the first bracket (30) and the second bracket (40) is detachably connected to the mounting member (20), and when only one of the first bracket (30) and the second bracket (40) is detachably connected to the mounting member (20), the first bracket (30) and the second bracket (40) are detachably connected.

2. The battery box according to claim 1, characterized in that: The box body (10) comprises a first cavity wall surface (11); The mounting member (20) comprises a first mounting component (21), wherein the first mounting component (21) is connected to the first cavity wall surface (11); The first bracket (30) is provided with a first connecting member (31); The second bracket (40) is provided with a second connecting piece (41) corresponding to the first connecting piece (31), and the second connecting piece (41) is respectively connected to the first connecting piece (31) and the first mounting component (21).

3. The battery case according to claim 1 or 2, characterized in that: The box body (10) comprises a bottom wall surface (12), and a second cavity wall surface (13) and a third cavity wall surface (14) arranged opposite to each other; The mounting member (20) comprises a mounting crossbeam (22), and the mounting crossbeam (22) respectively connects the bottom wall surface (12), the second cavity wall surface (13), and the third cavity wall surface (14); A third connecting member (32) is provided on the first bracket (30), and the third connecting member (32) is connected to the mounting crossbeam (22).

4. The battery case according to claim 3, characterized in that: The mounting member (20) further comprises a second mounting component (23), wherein the second mounting component (23) is connected to the mounting crossbeam (22); The second bracket (40) is provided with a fourth connecting member (42), and the fourth connecting member (42) is connected to the second mounting component (23).

5. The battery case according to claim 1, characterized in that: The second bracket (40) is provided with a first connecting adhesive (71), and the first connecting adhesive (71) is used to connect the second bracket (40) and the box body (10).

6. The battery case according to claim 5, characterized in that: The first connecting adhesive (71) is provided with two groups, and each group of the first connecting adhesive (71) is provided with a strip structure; along the width extension direction of the box body (10), the two groups of the first connecting adhesive (71) are sequentially arranged on both sides of the second bracket (40), and the extension direction of each group of the first connecting adhesive (71) is parallel to the length extension direction of the box body (10).

7. A battery pack, characterized in that: It comprises a battery cell and a battery box according to any one of claims 1 to 6, wherein the battery cell is arranged in the installation space (50).

8. The battery pack according to claim 7, characterized in that: The second bracket (40) is provided with a receiving groove (43), and a second connecting glue (72) is provided in the receiving groove (43), and the second connecting glue (72) respectively connects the battery cell and the second bracket (40).

9. The battery pack according to claim 7 or 8, characterized in that: The first bracket (30) is provided with a plurality of first mounting grooves (33) distributed in an array; The second bracket (40) is provided with a plurality of second mounting grooves (44) distributed in an array, the second mounting grooves (44) and the first mounting grooves (33) correspond one to one, and the two ends of the battery cell are respectively arranged in the second mounting groove (44) and the first mounting groove (33) and fastened.

10. An electrical device, characterized in that: Comprising a battery pack as claimed in any one of claims 7 to 9.

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