Battery and electric device

Abstract

This application relates to the field of battery structure, and more particularly to a battery and an electrical device. The battery includes a cell assembly, a housing, and a mounting bracket; the mounting bracket is located within the housing and includes a bracket body and an abutment member. The bracket body is used to fix the cell assembly; the abutment member is circumferentially arranged on the bracket body, and the abutment member elastically abuts against the inner wall of the housing. The battery provided in this application, by setting the abutment member to elastically abut against the inner wall of the housing, allows the mounting bracket and the housing to be tightly assembled together, thereby ensuring that the cell assembly does not shake within the housing, thus improving the overall mechanical reliability of the product. When the battery is subjected to severe impact or tumbling / drop impact, the elastic force generated by the abutment member can effectively absorb external vibrations, thus playing a cushioning role.

Description

Technical Field

[0001] This application relates to the field of battery structure, and in particular to a battery and an electrical device. Background Technology

[0002] With the increasing popularity of smart mobility, the requirements for the safety performance of battery products are becoming more and more stringent. Existing batteries, when subjected to severe impacts or tumble drops, are prone to cell module movement within the casing, which can easily lead to safety accidents and seriously endanger consumer safety. Utility Model Content

[0003] The purpose of this application is to provide a battery and electrical device that can, to a certain extent, prevent the movement of the battery cell module within the casing, thereby improving the safety performance of the battery product.

[0004] This application provides a battery, including a cell assembly, a housing, and a mounting bracket;

[0005] The fixing bracket is located inside the housing, and the fixing bracket includes a bracket body and an abutment member. The bracket body is used to fix the battery cell assembly.

[0006] The support body is provided with an abutment in the circumferential direction, and the abutment elastically abuts against the inner wall of the shell.

[0007] In the above technical solution, one end of the abutment is connected to the support body, the other end of the abutment approaches the inner wall of the housing, and a spring-loaded gap is formed between the abutment and the support body.

[0008] In the above technical solution, the number of fixing brackets is multiple; two opposing fixing brackets are provided at both ends of any one of the battery cell assemblies along its length, and the two fixing brackets fixing the same battery cell assembly are connected to each other.

[0009] In the above technical solution, the bracket body further includes an installation part and a connecting part;

[0010] The mounting part is provided with multiple insertion slots arranged at intervals to fix multiple cells of the cell assembly;

[0011] The connecting part is connected to the side of the mounting part near the cell assembly, and the connecting part is disposed between the plurality of the plug slots;

[0012] The connecting portions of the two fixed brackets that are positioned opposite each other are connected to each other.

[0013] The above technical solution further includes a positioning rod;

[0014] The number of battery cell assemblies is multiple, and the multiple battery cell assemblies are arranged sequentially along their own length direction;

[0015] The positioning rod passes through the fixing brackets corresponding to the multiple battery cell assemblies.

[0016] The above technical solution further includes a circuit board;

[0017] The fixing bracket is provided with an embedding groove, and the circuit board is embedded in the embedding groove;

[0018] The bracket body has a mounting groove on the side opposite to the battery cell assembly that is fixed to it. The mounting groove is used to install conductive components. The conductive components can be connected to at least two of the battery cells in the battery cell assembly, and the conductive components are connected to the circuit board.

[0019] In the above technical solution, the conductive element further includes a first connecting portion and a second connecting portion;

[0020] The first connecting part is connected to the plurality of said battery cells, one end of the second connecting part is connected to the first connecting part, and the other end of the second connecting part is connected to the circuit board;

[0021] The second connecting portion is provided with a bent section to make the second connecting portion elastic.

[0022] In the above technical solution, the housing further includes a main body, an upper cover, and a lower cover;

[0023] The main body is cylindrical and surrounds the circumference of the battery cell assembly and the fixing bracket; the abutment member elastically abuts against the main body;

[0024] The upper cover is installed at one end opening of the main body; the lower cover is installed at the other end opening of the main body; a buffer is provided between the upper cover and the battery cell assembly; and / or a buffer is provided between the lower cover and the battery cell assembly.

[0025] In the above technical solution, when the buffer is provided between the top cover and the battery cell assembly, a limiting structure is provided between the top cover and the corresponding fixed bracket to limit the buffer.

[0026] When the buffer is provided between the lower cover and the battery cell assembly, a limiting structure is provided between the lower cover and the corresponding fixed bracket to limit the buffer.

[0027] In the above technical solution, both the upper cover and the lower cover are provided with mounting holes to connect the whole machine;

[0028] The top cover is provided with a wire harness hole, through which the wire harness connecting the battery cell assembly passes;

[0029] The lower cover is provided with a vent to release pressure from the battery cell assembly.

[0030] This application also provides an electrical device, including the battery described in the above-described solution.

[0031] Compared with the prior art, the beneficial effects of this application are as follows:

[0032] The battery provided in this application, by setting an abutment member that elastically abuts against the inner wall of the casing, allows the fixing bracket and the casing to be tightly assembled together, thereby ensuring that the cell assembly does not shake within the casing and thus improving the overall mechanical reliability of the product. When the battery is subjected to severe impact or tumbling and drop impact, the elastic force generated by the abutment member can effectively absorb external vibrations, thus playing a cushioning role.

[0033] This application also provides an electrical device, including the battery described in the above solution. Based on the above analysis, it is clear that the electrical device also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the exploded structure of the battery provided in this application;

[0036] Figure 2 A schematic diagram of the external structure of the battery provided in this application;

[0037] Figure 3 This is a structural schematic diagram of the fixing bracket provided in this application;

[0038] Figure 4 A schematic diagram of the assembly structure of the fixed bracket provided in this application;

[0039] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0040] Figure 6 A schematic diagram of the internal structure of the battery provided in this application;

[0041] Figure 7A schematic diagram of the inner structure of the top cover provided in this application;

[0042] Figure 8 A schematic diagram of the outer structure of the cover provided in this application;

[0043] Figure 9 A schematic diagram of the inner structure of the lower cover provided in this application;

[0044] Figure 10 A schematic diagram of the outer structure of the lower cover provided in this application.

[0045] In the diagram: 101-Battery cell assembly; 102-Housing shell; 103-Fixing bracket; 104-Bracket body; 105-Abutting part; 106-Spring gap; 107-Protruding structure; 108-Mounting part; 109-Connecting part; 110-Plug-in slot; 111-Connecting post; 112-Protrusion; 113-Slot; 114-Positioning rod; 115-Through hole; 116-Circuit board; 117-Embedding groove; 118-Mounting groove; 119-Conductive component; 120-First connecting part; 121-Second connecting part; 122-Main body; 123-Upper cover; 124-Lower cover; 125-Sealing ring; 126-Spring; 127-Limiting groove; 128-Connecting ear; 129-Mounting hole; 130-Wire harness hole; 131-Wire harness; 132-Ventilation hole; 133-Ventilating membrane. Detailed Implementation

[0046] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] Example 1

[0050] See Figures 1 to 10 As shown, the battery provided in this application includes a cell assembly 101, a housing 102, and a fixing bracket 103. The fixing bracket 103 is located inside the housing 102 and is used to fix the cell assembly 101. Specifically, the fixing bracket 103 includes a bracket body 104 and an abutment member 105, wherein the bracket body 104 serves as a main support structure for fixing the cell assembly 101. At least one abutment member 105 is circumferentially disposed on the bracket body 104, and the abutment member 105 elastically abuts against the inner wall of the housing 102.

[0051] Optionally, the bracket body 104 is provided with a plurality of abutment members 105 in the circumferential direction. The plurality of abutment members 105 are provided in a corresponding manner to the plurality of side walls of the housing 102, which can improve the effect of fixing the battery cell assembly 101 from multiple directions.

[0052] When the battery cell assembly 101 is assembled into the housing 102, the inner wall of the housing 102 presses against the abutment member 105 to ensure an interference fit between the fixing bracket 103 and the housing 102. Because the abutment member 105 has tension in the direction of the housing 102, it ensures that the fixing bracket 103 and the housing 102 are tightly assembled together, thus preventing the battery cell assembly 101 from shaking within the housing 102 and improving the overall mechanical reliability of the product. When the battery is subjected to severe impacts or tumbling drops, the elastic force generated by the abutment member 105 effectively absorbs external vibrations, providing a cushioning effect.

[0053] In this embodiment, one end of the abutment 105 is connected to the support body 104, the other end of the abutment 105 approaches the inner wall of the housing 102, and a spring gap 106 is formed between the abutment 105 and the support body 104.

[0054] In this embodiment, such as Figure 5As shown, the fixing bracket 103 is made of plastic, and the abutment 105 is a spring piece provided on the bracket body 104. The fixed end of the spring piece is connected to the bracket body 104, and the movable end of the spring piece is close to the inner wall of the housing 102. In its natural state, the movable end of the spring piece is away from the bracket body 104, and the spring gap 106 between the spring piece and the bracket body 104 is relatively large. When the battery cell assembly 101 is assembled into the housing 102, the spring piece is pressed by the housing 102 to make the spring piece move closer to the bracket body 104, thereby reducing the spring gap 106 between the spring piece and the bracket body 104; while the tension generated by the spring piece is applied to the inner wall of the housing 102, which can increase the friction between the two. Figure 5 The dashed line indicates that the spring is under pressure by the housing 102.

[0055] Preferably, the movable end of the spring is provided with a protruding structure 107 that bends toward the housing 102, so that the spring applies a greater force to the housing 102, thereby further improving the effect of fixing the battery cell assembly 101.

[0056] Alternatively, the abutment 105 can also be configured as a spring 126, a rubber pad, or other structures. However, compared to spring 126, rubber pads, or other structures, the spring sheet offers better compactness and stability. Spring 126 typically requires a certain amount of compression and extension space, which increases the size of the housing 102. Furthermore, spring 126 is prone to bending and skewing during extension and retraction, making it difficult to accurately position the support body 104. Rubber pads can also generate a certain amount of elasticity, but this elasticity is generated by the compression of the rubber material itself, resulting in relatively small elasticity. When assembling the battery cell assembly 101 into the housing 102, high friction will occur between the rubber pad and the housing 102, increasing the assembly difficulty.

[0057] In this embodiment, the number of fixing brackets 103 is multiple; two opposing fixing brackets 103 are provided at both ends of any battery cell assembly 101 along its length, and the two fixing brackets 103 fixing the same battery cell assembly 101 are connected to each other. That is, for the same battery cell assembly 101, the two fixing brackets 103 can fix the battery cell assembly 101 from both ends, which can improve the fixing effect on the battery cell assembly 101. Moreover, the two fixing brackets 103 are connected to each other to form an integral structure, which increases the rigidity of the entire bracket system and improves the stability of the battery cell assembly 101.

[0058] In the optional solutions of this embodiment, such as Figure 3As shown, the bracket body 104 includes a mounting portion 108 and a connecting portion 109. The mounting portion 108 is provided with a plurality of spaced-apart insertion slots 110 to individually fix the plurality of battery cells of the battery cell assembly 101, preventing the plurality of battery cells from squeezing and colliding with each other. Moreover, the shape of the insertion slots 110 is adapted to the shape of the battery cell. The battery cell shown in the figure is a cylindrical battery cell, and the insertion slots 110 are also set to be circular accordingly; when the battery cell is other shapes, the insertion slots 110 can also be set accordingly.

[0059] Furthermore, such as Figure 4 As shown, the connecting portion 109 is connected to the mounting portion 108 on the side near the cell assembly 101, and the connecting portion 109 is disposed among a plurality of insertion slots 110; the connecting portions 109 of the two opposing fixing brackets 103 are connected to each other. Specifically, the connecting portion 109 includes two connecting posts 111, which are arranged at intervals along the length direction of the mounting portion 108, and are symmetrically arranged with the axis of symmetry being the center line perpendicular to the length direction of the mounting portion 108. At this time, the two fixing brackets 103 fixing the same cell assembly 101 have identical structures, and the fixing bracket 103 located at one end of the cell assembly 101 is rotated 180 degrees relative to the fixing bracket 103 at the other end. When manufacturing the fixing bracket 103, only one type of fixing bracket 103 needs to be produced, which can reduce production costs and improve production efficiency.

[0060] More specifically, of the two connecting posts 111, one connecting post 111 is provided with a protrusion 112 and the other connecting post 111 is provided with a slot 113. In the two fixing brackets 103 that fix the same battery cell assembly 101, the protrusion 112 of one fixing bracket 103 can be inserted into the slot 113 of the other fixing bracket 103, thereby achieving mutual insertion and fixing.

[0061] In an optional embodiment, the battery further includes a positioning rod 114; there are multiple battery cell assemblies 101, and the multiple battery cell assemblies 101 are arranged sequentially along their own length direction; the positioning rod 114 passes through the fixing bracket 103 corresponding to the multiple battery cell assemblies 101.

[0062] In this embodiment, such as Figure 6 As shown, multiple battery cell assemblies 101 are disposed within the housing 102 to increase battery capacity. The multiple battery cell assemblies 101 are arranged sequentially along their length, thus forming a cuboid structure. To illustrate the internal positioning rod 114 structure, Figure 6Concealing one of the battery cell components 101 and its corresponding mounting bracket 103 is a central feature. A positioning rod 114 passes through the mounting brackets 103 of multiple battery cell components 101, providing additional fixing points, reducing relative movement between the battery cell components 101, and enhancing the structural stability of the entire battery pack. To improve the insulation performance of the multiple battery cell components 101, an insulating sheet is provided between adjacent mounting brackets 103 in adjacent battery cell components 101.

[0063] Specifically, two positioning rods 114 are also provided. The mounting part 108 of the fixed bracket 103 and the two connecting columns 111 are respectively provided with through holes 115. The two positioning rods 114 pass through the through holes 115 of the multiple fixed brackets 103, so that the mounting part 108 and the connecting columns 111 surround the positioning rods 114, which can hide the positioning rods 114 and reduce the space occupation.

[0064] In an optional embodiment, the battery further includes a circuit board 116; the fixing bracket 103 is provided with an embedding groove 117, and the circuit board 116 is embedded in the embedding groove 117; the bracket body 104 is provided with an installation groove 118 on the side away from the cell assembly 101 fixed by itself, and the installation groove 118 is used to install the conductive component 119; the installation groove 118 communicates with the plug-in groove 110 so that the conductive component 119 can be connected to at least two cells in the cell assembly 101, and the conductive component 119 is connected to the circuit board 116.

[0065] In this embodiment, a mounting groove 118 is provided on the side of the support body 104 away from the battery cell assembly 101 fixed by itself. A conductive element 119, specifically a nickel sheet, is disposed in the mounting groove 118. The mounting groove 118 communicates with the insertion groove 110 so that the battery cells in the battery cell assembly 101 can be connected to the conductive element 119, and the conductive element 119 is connected to the circuit board 116, which can realize the series and parallel connection of the battery cells.

[0066] like Figure 6As shown, the battery cell assembly 101 includes eight battery cells. Two conductive elements 119 are provided; one conductive element 119 is connected to four of the battery cells, and the other conductive element 119 is connected to the remaining four. Two circuit boards 116 are provided (one circuit board 116 is hidden in the figure to show the internal structure), and each circuit board 116 is connected to one of the two conductive elements 119. The circuit board 116 is elongated, and its length direction is consistent with the arrangement direction of the multiple battery cell assemblies 101, allowing the circuit board 116 to be electrically connected to the multiple battery cell assemblies 101 through the conductive elements 119. An insulating pad is provided between the circuit board 116 and the housing 102. Multiple fixing brackets 103 are provided with embedding slots 117, which can fix the circuit board 116 at multiple points, reducing the problem of loosening of the connection between the conductive elements 119 and the circuit board 116 due to vibration, and improving the stability of the connection. Furthermore, embedding the circuit board 116 into the fixing brackets 103 also reduces the space occupied by the circuit board 116, making the overall structure more compact.

[0067] In an optional embodiment, the conductive component 119 includes a first connecting portion 120 and a second connecting portion 121. The first connecting portion 120 is connected to multiple battery cells, one end of the second connecting portion 121 is connected to the first connecting portion 120, and the other end of the second connecting portion 121 is connected to the circuit board 116. The second connecting portion 121 is provided with a bending section to make it elastic. The bending section of the second connecting portion 121 provides elasticity, allowing the casing to absorb some energy when the battery is subjected to external force or vibration, reducing the risk of loosening. Furthermore, the bending section has deformability, reducing the risk of breakage due to rigid connections.

[0068] Example 2

[0069] The battery in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0070] See Figure 1As shown, in an optional embodiment, the housing 102 includes a main body 122, an upper cover 123, and a lower cover 124. The main body 122 is an integrally formed aluminum cylinder, and it surrounds the battery cell assembly 101 and the fixing bracket 103 circumferentially. The abutment member 105 elastically abuts against the main body 122, so that the main body 122 can fix and protect the battery cell assembly 101. The upper cover 123 is bolted to one end opening of the main body 122 to close that end opening; the lower cover 124 is bolted to the other end opening of the main body 122 to close that end opening. Sealing rings 125 are provided between the upper cover 123, the lower cover 124, and the main body 122 to improve the sealing performance of the housing 102 and enhance the battery's splash resistance. An insulating sheet is provided between the upper cover 123 and the corresponding fixing bracket 103, and an insulating sheet is provided between the lower cover 124 and the corresponding fixing bracket 103.

[0071] A buffer element penetrating the insulating sheet is provided between the upper cover 123 and the cell assembly 101; and / or a buffer element penetrating the insulating sheet is provided between the lower cover 124 and the cell assembly 101. The buffer element provides cushioning to the cell assembly 101 from the length direction of the cell assembly 101, and the abutment member 105 provides cushioning to the cell assembly 101 from the length direction perpendicular to the cell assembly 101. The combined effect of the two provides better drop and impact cushioning protection for the product, thereby further improving the mechanical and safety performance of the product.

[0072] In an optional embodiment, when a buffer is provided between the upper cover 123 and the battery cell assembly 101, a limiting structure is provided between the upper cover 123 and the corresponding fixed bracket 103 to limit the buffer; when a buffer is provided between the lower cover 124 and the battery cell assembly 101, a limiting structure is provided between the lower cover 124 and the corresponding fixed bracket 103 to limit the buffer.

[0073] In this embodiment, such as Figure 1 , Figure 7 and Figure 8 As shown, the buffer component located inside the upper cover 123 includes two springs 126 spaced apart. The inner side of the upper cover 123 is provided with two limiting grooves 127 and / or a corresponding fixing bracket 103 is provided with two limiting grooves 127. The springs 126 are placed within the limiting grooves 127 to fix them, ensuring that the springs 126 can be compressed to provide a buffering effect. Figure 1 , Figure 9 and Figure 10As shown, the buffer component located inside the lower cover 124 includes two springs 126 arranged at intervals. The inner side of the lower cover 124 is provided with two limiting grooves 127 and / or the corresponding fixing bracket 103 is provided with two limiting grooves 127. The springs 126 are placed in the limiting grooves 127 to fix the springs 126 and ensure that the springs 126 can be compressed to play a buffering role.

[0074] In this embodiment, both the upper cover 123 and the lower cover 124 are provided with mounting holes 129 to connect the whole device. Specifically, both the upper cover 123 and the lower cover 124 include a cover body and two connecting ears 128. The two connecting ears 128 are connected to the cover body, and both connecting ears 128 are provided with mounting holes 129 to connect the whole device, thereby assembling and fixing the battery with the whole device.

[0075] The upper cover 123 has a wiring harness hole 130, through which the wiring harness 131 connecting the battery cell assembly 101 passes to electrically connect the battery cell assembly 101 to the whole machine. The wiring harness 131 and the wiring harness hole 130 are sealed and fixed with glue. The lower cover 124 has a vent hole 132, and a breathable membrane 133 is provided at the vent hole 132 to relieve pressure on the battery cell assembly 101, which helps to improve the product's safety performance.

[0076] Example 3

[0077] Embodiment 3 of this application provides an electrical device that includes the battery of any of the above embodiments, and thus has all the beneficial technical effects of the battery of any of the above embodiments, which will not be repeated here.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A battery, characterized in that, Includes cell assembly, housing, and mounting bracket; The fixing bracket is located inside the housing, and the fixing bracket includes a bracket body and an abutment member. The bracket body is used to fix the battery cell assembly. The support body is provided with an abutment in the circumferential direction, and the abutment elastically abuts against the inner wall of the shell.

2. The battery according to claim 1, characterized in that, One end of the abutment is connected to the support body, and the other end of the abutment approaches the inner wall of the housing, with a spring-loaded gap formed between the abutment and the support body.

3. The battery according to claim 1, characterized in that, The number of fixing brackets is multiple; each of the battery cell components has two opposing fixing brackets at both ends along its length, and the two fixing brackets that fix the same battery cell component are connected to each other.

4. The battery according to claim 3, characterized in that, The main body of the bracket includes a mounting part and a connecting part; The mounting part is provided with multiple insertion slots arranged at intervals to fix multiple cells of the cell assembly; The connecting part is connected to the side of the mounting part near the cell assembly, and the connecting part is disposed between the plurality of the plug slots; The connecting portions of the two fixed brackets that are positioned opposite each other are connected to each other.

5. The battery according to claim 3, characterized in that, It also includes a positioning rod; The number of battery cell assemblies is multiple, and the multiple battery cell assemblies are arranged sequentially along their own length direction; The positioning rod passes through the fixing brackets corresponding to the multiple battery cell assemblies.

6. The battery according to claim 1, characterized in that, It also includes circuit boards; The fixing bracket is provided with an embedding groove, and the circuit board is embedded in the embedding groove; The bracket body has a mounting groove on the side opposite to the battery cell assembly that is fixed to it. The mounting groove is used to install conductive components. The conductive components can be connected to at least two of the battery cells in the battery cell assembly, and the conductive components are connected to the circuit board.

7. The battery according to claim 6, characterized in that, The conductive component includes a first connecting portion and a second connecting portion; The first connecting part is connected to the plurality of said battery cells, one end of the second connecting part is connected to the first connecting part, and the other end of the second connecting part is connected to the circuit board; The second connecting portion is provided with a bent section to make the second connecting portion elastic.

8. The battery according to claim 1, characterized in that, The housing includes a main body, an upper cover, and a lower cover; The main body is cylindrical and surrounds the circumference of the battery cell assembly and the fixing bracket; the abutment member elastically abuts against the main body; The upper cover is installed at one end opening of the main body; the lower cover is installed at the other end opening of the main body; a buffer is provided between the upper cover and the battery cell assembly; and / or a buffer is provided between the lower cover and the battery cell assembly.

9. The battery according to claim 8, characterized in that, When the buffer is provided between the top cover and the battery cell assembly, a limiting structure is provided between the top cover and the corresponding fixing bracket to limit the buffer. When the buffer is provided between the lower cover and the battery cell assembly, a limiting structure is provided between the lower cover and the corresponding fixed bracket to limit the buffer.

10. The battery according to claim 8, characterized in that, Both the upper cover and the lower cover are provided with mounting holes for connecting the whole machine; The top cover is provided with a wire harness hole, through which the wire harness connecting the battery cell assembly passes; The lower cover is provided with a vent to release pressure from the battery cell assembly.

11. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1 to 10.

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