Battery cell and battery

Abstract

The utility model provides a battery cell and battery, the battery cell comprises a shell, a battery cell body and a gasket assembly, the battery cell body is arranged in the shell, the gasket assembly at least comprises a bottom gasket, the bottom gasket is arranged between the battery cell body and the bottom surface of the shell, the bottom gasket is arranged in an area between two ends of the battery cell body along a first direction, and the bottom gasket is arranged in a second direction. And an isolation space is formed between the two end parts of the battery cell body and the bottom surface of the shell. According to the battery cell and the battery provided by the utility model, the bottom gasket is arranged between the battery cell body and the bottom surface of the shell, and the two end parts, which face the bottom surface of the shell and are arranged along the first direction, of the battery cell body are isolated from the shell through the bottom gasket, so that the battery cell is prevented from falling off in a battery falling process; when the battery falls off, the end part of the battery cell body collides with the shell, so that the problem of angular deformation of the battery cell body caused by collision between the battery cell body and the shell in the falling process of the battery in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to batteries, and in particular to a battery cell and a battery. Background Art

[0002] There is a gap between the cell body and the shell of a lithium-ion battery. Therefore, when the lithium-ion battery is dropped, vibrated, or subjected to other forms of mechanical shock, relative sliding will occur between the cell body and the shell, causing the corners of the cell body to deform, which can easily lead to safety problems such as short circuits, breakage, and even combustion.

[0003] At present, the lithium-ion battery industry's method of improving the drop failure of steel-shell batteries is mainly to fix the battery cell by wrapping the battery cell diaphragm with hot melt adhesive to prevent the diaphragm from folding, the positive and negative poles from moving and contacting, and the corners from deforming during the drop process, causing short circuit failure.

[0004] However, the method of fixing the diaphragm with glue after outsourcing still cannot completely avoid the problem of corner deformation during falling. In addition, the gluing process takes a long time, the thickness of the battery cell increases, and the liquid injection space is reduced after the core and the steel shell are adhered.

[0005] As can be seen from the above, when a conventional battery is dropped, the battery cell body and the battery shell are prone to collision, resulting in corner deformation of the battery cell body. Utility Model Content

[0006] The main purpose of the utility model is to provide a battery cell and a battery to solve the problem in the prior art that when the battery falls, the battery cell body and the shell are easily collided, resulting in angular deformation of the battery cell body.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a battery cell is provided, which includes a shell, a battery cell body and a gasket assembly. The battery cell body is arranged inside the shell, and the gasket assembly includes at least a bottom gasket. The bottom gasket is arranged between the battery cell body and the bottom surface of the shell. The extension length of the bottom gasket along the first direction is less than the extension length of the battery cell body. The two ends of the bottom gasket along the first direction are respectively spaced from the two side surfaces of the battery cell body to avoid the two ends of the battery cell body. An isolation space is formed between the two ends of the battery cell body and the bottom surface of the shell.

[0008] Furthermore, along the height direction of the housing, the projection of the bottom gasket on the surface of the battery cell body is located inside the surface of the battery cell body.

[0009] Furthermore, along the first direction, the distances between the two ends of the bottom gasket and the two ends of the battery cell body are equal.

[0010] Furthermore, along the first direction, an extension length of the bottom gasket is 50%-70% of an extension length of the battery cell body.

[0011] Furthermore, along a second direction perpendicular to the first direction, an extension length of the bottom gasket is 60%-80% of an extension length of the battery cell body.

[0012] Furthermore, the bottom gasket is fixedly connected to the bottom surface of the shell, and the battery cell body is supported on the bottom gasket; or the bottom gasket is fixedly connected to the battery cell body, and the bottom gasket abuts against the bottom surface of the shell.

[0013] Furthermore, when the bottom gasket abuts against the bottom surface of the shell, the battery cell also includes a colloid, which is arranged between the bottom gasket and the battery cell body to form an adhesive layer; and / or the battery cell also includes a tape, and the bottom gasket and the battery cell body are fixedly connected by the tape.

[0014] Furthermore, the gasket assembly also includes a side gasket, which is arranged between the battery cell body and the inner side of the shell, and the projection of the side gasket on the battery cell body is formed inside the area of the side of the battery cell body.

[0015] Furthermore, the housing includes a bottom shell and a cover plate, the bottom shell and the cover plate are arranged along a second direction perpendicular to the first direction, the bottom shell and the cover plate cooperate to form an installation cavity, and the battery cell body and the gasket assembly are arranged inside the installation cavity.

[0016] Furthermore, a liquid injection hole is provided on the top surface of the bottom shell; and / or the bottom shell and the cover plate are fixed by welding or by fasteners.

[0017] Furthermore, the first direction is the length direction of the bottom gasket; and / or the shell is a cubic structure; and / or the bottom gasket of the gasket assembly and the side gasket of the gasket assembly are made of PET or silicone material that can undergo elastic deformation.

[0018] According to another aspect of the present invention, a battery is provided. The battery includes at least one battery cell and a shell. The battery cell is the battery cell described above, and the battery cell is arranged inside the shell.

[0019] Applying the technical solution of the present utility model, the battery cell adopted in this application includes a shell, a battery cell body and a gasket assembly, wherein the gasket assembly includes a bottom gasket, and the bottom gasket is supported between the bottom surface of the shell and the battery cell body along the height direction of the shell. The bottom gasket isolates the two ends of the battery cell body facing the bottom surface of the shell arranged along the first direction and the bottom surface of the shell, so as to avoid collision between the ends of the battery cell body and the shell during the battery falling process, thereby solving the problem in the prior art that the battery cell body is prone to collision with the shell during the battery falling process, resulting in angular deformation of the corners of the end area of the battery cell body facing the bottom surface of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 Shows a schematic diagram of the three-dimensional structure of the battery cell of the present utility model;

[0022] Figure 2 Shows a side view of the battery cell of the present invention;

[0023] Figure 3 Shown Figure 2 Middle AA section view;

[0024] Figure 4 Shown Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 An exploded view of the battery cell of the present invention is shown;

[0026] Figure 6 A side view of the installation structure of the battery cell body of the present invention inside the housing is shown;

[0027] Figure 7 Shows a schematic diagram of the three-dimensional structure of the battery cell body of the present utility model;

[0028] Figure 8 The bottom surface structure diagram of the battery cell body of the present invention is shown;

[0029] Figure 9 Shows a schematic diagram of the three-dimensional structure of the bottom gasket of the utility model;

[0030] Figure 10 The figure shows a three-dimensional structural diagram of the adhesive tape of the present invention.

[0031] The above drawings include the following reference numerals:

[0032] 10. Outer shell; 101. Bottom shell; 102. Cover plate; 110. Mounting cavity; 111. Mounting slot; 120. Liquid injection hole; 20. Battery cell body; 30. Bottom gasket; 40. Adhesive tape. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0036] In order to solve the problem in the prior art that the battery cell body and the shell are prone to collision during battery falling, resulting in angular deformation of the battery cell body, the present application provides a battery cell and a battery, wherein the battery includes a battery cell and a shell, and the battery cell is arranged inside the shell.

[0037] Among them, the battery cell can be set as one or multiple, and can be adaptively set according to actual needs.

[0038] In this embodiment, the battery is a lithium battery.

[0039] like Figures 1 to 5 As shown, the battery cell includes a shell 10, a battery cell body 20 and a gasket assembly. The battery cell body 20 is arranged inside the shell 10. The gasket assembly includes at least a bottom gasket 30. The bottom gasket 30 is arranged between the battery cell body 20 and the bottom surface of the shell 10. The extension length of the bottom gasket 30 along the first direction is less than the extension length of the battery cell body 20, and the two ends of the bottom gasket 30 along the first direction are respectively spaced from the two side surfaces of the battery cell body 20, so that the bottom gasket 30 is arranged in the area between the two ends of the battery cell body 20 along the first direction to avoid the two ends of the battery cell body 20, and an isolation space is formed between the two ends of the battery cell body 20 and the bottom surface of the shell 10.

[0040] Specifically, the battery cell used in the present application includes a shell 10, a battery cell body 20 and a gasket assembly, wherein the gasket assembly includes a bottom gasket 30, and the bottom gasket 30 is supported between the bottom surface of the shell 10 and the battery cell body 20 along the height direction of the shell 10. The bottom gasket 30 isolates the two ends of the battery cell body 20 facing the bottom surface of the shell 10 arranged along the first direction and the bottom surface of the shell 10 to form an isolation space. The setting of the isolation space can avoid collision between the ends of the battery cell body 20 and the shell 10 during the battery falling process, thereby solving the problem in the prior art that the battery cell body 20 is prone to collision between the shell and the shell during the battery falling process, resulting in angular deformation of the corners of the end area of the battery cell body 20 facing the bottom surface of the shell 10, thereby improving the safety of the battery cell.

[0041] The present application adopts a method of setting a bottom gasket 30 inside the installation cavity 110 of the shell 10 to realize that the bottom gasket 30 is supported between the battery cell body 20 and the bottom surface of the shell 10. The overall operation is simple, and the reasonable use of the internal space of the shell 10 for setting will not cause the problem of increasing the overall thickness of the battery cell. At the same time, it also avoids the problem of reduced liquid injection space after the core and the shell are adhered together due to the use of hot melt adhesive after the diaphragm is outwrapped in the prior art.

[0042] It is understandable that both ends of the battery cell body 20 along the first direction have corners. The present application provides gaskets to prevent the corners of the end areas from colliding with the housing 10 and causing corner deformation when impacted.

[0043] In this embodiment, the first direction is the length direction of the bottom gasket 30, and the first direction is also the width direction of the battery cell body 20. Figure 1 and Figure 5 The second direction is perpendicular to the first direction, the second direction is the width direction of the bottom gasket 30, the first direction is also the thickness direction of the battery body 20, the second direction is Figure 1 and Figure 5 The third direction is perpendicular to the first direction and the second direction, the third direction is the height direction of the housing 10, the third direction is Figure 1 and Figure 5 The Z direction is shown.

[0044] In this embodiment, the positive electrode sheet, the separator, and the negative electrode sheet are wound or stacked to form the battery cell body 20 of this embodiment.

[0045] In this embodiment, the gasket component is made of PET or silicone material that can undergo elastic deformation. It is not limited to the above structure, and the gasket component can also be made of other materials that can undergo elastic deformation.

[0046] like Figures 1 to 6 As shown, the housing 10 is a cubic structure, that is, a square housing, and the structure of the battery cell body 20 matches the shape of the housing 10 .

[0047] Specifically, the housing 10 is made of metal and has a certain strength to protect the cell body 20 and prevent the cell body 20 from being easily damaged. Preferably, the housing 10 is made of copper or aluminum to facilitate welding and assembly and have good heat dissipation.

[0048] Furthermore, the housing 10 includes a bottom shell 101 and a cover plate 102, which are arranged along a second direction perpendicular to the first direction. The bottom shell 101 and the cover plate 102 cooperate to form an installation cavity 110, and the battery cell body 20 and the gasket assembly are arranged inside the installation cavity 110.

[0049] The bottom shell 101 has a mounting groove 111 opened along the second direction, and the cover plate 102 is covered at the notch of the mounting groove 111 to form a mounting cavity 110 .

[0050] Specifically, during installation, the cell body 20 is placed inside the installation groove 111 of the bottom shell 101 , and then the cover plate 102 is placed on the bottom shell 101 along the second direction, so that the bottom shell 101 and the cover plate 102 cooperate to complete the installation of the cell body 20 .

[0051] Furthermore, the bottom shell 101 and the cover plate 102 are fixed by welding, which helps to increase the strength and stability of the connection between the bottom shell 101 and the cover plate 102. Preferably, laser welding is used to achieve the welding of the bottom shell 101 and the cover plate 102, which is easy to operate and has good welding effect.

[0052] Of course, the bottom shell 101 and the cover plate 102 may also be connected by fixed connection via fasteners, where the fasteners are structural parts such as screws.

[0053] In this embodiment, a liquid injection hole 120 is provided on the top surface of the bottom shell 101 along the height direction of the outer shell 10. The liquid injection hole 120 is located in the central region of the top surface of the bottom shell 101, that is, the liquid injection hole 120 is located in the middle region of the bottom shell 101 along both the first and second directions. Structural components such as poles and insulating pads are also provided on the top surface of the bottom shell 101. It should be noted that the arrangement of the poles and insulating pads is similar to that of existing battery cells.

[0054] like Figures 1 to 10 As shown, along the height direction of the housing 10 , the projection of the bottom gasket 30 on the cell body 20 is located inside the surface of the cell body 20 facing the bottom surface of the housing 10 .

[0055] Specifically, there is a gap between the surface of the bottom gasket 30 in contact with the battery cell body 20 and the outer contour of the surface of the battery cell body 20 facing the bottom surface of the shell 10, and then the bottom gasket 30 is supported between the battery cell body 20 and the shell 10 to achieve the formation of an isolation space between the outer contour of the surface of the battery cell body 20 facing the bottom surface of the shell 10 and the bottom surface of the shell 10. When the battery falls and is impacted by external force, the outer contour area of the surface of the battery cell body 20 facing the bottom surface of the shell 10 can avoid deformation or damage caused by collision with the shell 10, thereby improving the safety of the battery cell.

[0056] In one preferred implementation of this embodiment, along the first direction, the distances between the two ends of the bottom gasket 30 and the two ends of the battery cell body 20 are equal.

[0057] Among them, along the first direction, such as Figure 8 As shown, the bottom gasket 30 is disposed in the central area of the side of the battery cell body 20 facing the bottom surface of the housing 10. In this embodiment, along the first direction, the distance between the end of the battery cell body 20 and the end of the bottom gasket 30 on the same side is H1, and the distance between the end of the battery cell body 20 and the end of the bottom gasket 30 on the other side is H2, where H1 is equal to H2.

[0058] The distances between the two ends of the bottom gasket 30 and the two ends of the battery cell body 20 are equal, so that the surface force of the battery cell body 20 facing the bottom surface of the shell 10 is uniform, thereby better preventing the battery cell from being deformed at the corners during the battery falling process.

[0059] Along the first direction, such as Figure 8 As shown, the extension length of the bottom gasket 30 is H3, the extension length of the battery cell body 20 is H4, and the extension length H3 of the bottom gasket 30 is 50%-70% of the extension length H4 of the battery cell body 20.

[0060] Specifically, the extension length H3 of the bottom gasket 30 and the extension length H4 of the battery cell body 20 can be adaptively set in length, where H3 is equal to 50% of H4, H3 is equal to 55% of H4, H3 is equal to 60% of H4, H3 is equal to 65% of H4, and H3 is equal to 70% of H4.

[0061] Along the second direction, such as Figure 8 As shown, the extension length of the bottom gasket 30 is H5, the extension length of the battery cell body 20 is H6, and the extension length H5 of the bottom gasket 30 is 60%-80% of the extension length H6 of the battery cell body 20.

[0062] Specifically, the extension length H5 of the bottom gasket 30 and the extension length H6 of the battery cell body 20 can be adaptively set in length, where H5 is equal to 50% of H6, H5 is equal to 55% of H6, H5 is equal to 60% of H6, H5 is equal to 65% of H66, and H5 is equal to 70% of H6.

[0063] Along the height direction of the housing 10 , the thickness of the bottom gasket 30 can be adaptively set according to the space between the battery cell body 20 and the bottom surface of the housing 10 , so that the bottom gasket 30 is supported between the battery cell body 20 and the bottom surface of the housing 10 .

[0064] In this embodiment, the following two implementations are provided according to different fixing structures of the bottom gasket 30 .

[0065] like Figures 1 to 10 In a specific embodiment shown, the bottom gasket 30 is fixedly connected to the battery cell body 20 , and the bottom gasket 30 abuts against the bottom surface of the housing 10 .

[0066] During the assembly process, the bottom gasket 30 and the cell body 20 are first installed and fixed, and then the cell body 20 and the bottom gasket 30 are installed inside the housing 10 by a clamp.

[0067] Specifically, the battery cell further includes a colloid, which is disposed between the bottom gasket 30 and the battery cell body 20 to form an adhesive layer, and the bottom gasket 30 and the battery cell body 20 are bonded and fixed via the adhesive layer.

[0068] The colloid is a heat-conducting colloid with heat dissipation effect.

[0069] It should be noted that the connection structure between the bottom gasket 30 and the battery cell body 20 is not limited to the above-mentioned adhesive layer setting. The battery cell can also include a tape 40, and the bottom gasket 30 and the battery cell body 20 are fixedly connected by the tape 40, and the bottom gasket 30 is fixed by a structure wrapped with the tape 40.

[0070] Furthermore, one or more tapes 40 may be provided. When multiple tapes 40 are provided, the multiple tapes 40 are spaced apart along the first direction. Providing multiple tapes 40 helps to improve the secure connection between the bottom gasket 30 and the cell body 20. One end of each tape 40 is attached to one of the opposing side surfaces of the cell body 20 along the first direction, while the other end of the tape 40 is wrapped around the bottom gasket 30 and attached to the other side surface of the cell body 20.

[0071] In a specific embodiment not shown in the figure, the bottom gasket 30 is fixedly connected to the bottom surface of the housing 10 , and the battery cell body 20 is supported on the bottom gasket 30 .

[0072] Specifically, the structure in which the bottom gasket 30 is fixedly connected to the bottom surface of the housing 10 may be bonded using an adhesive layer or an adhesive tape 40 .

[0073] In this embodiment, in order to further improve the stability of the installation of the bottom gasket 30, a groove with an opening facing the battery cell body 20 can be set on the bottom surface of the shell 10, and the depth of the groove along the height direction of the shell 10 is less than the thickness of the bottom gasket 30, so that a part of the bottom gasket 30 is aligned with the inside of the groove to achieve a limited installation of the bottom gasket 30, and the other part of the bottom gasket 30 protrudes from the groove to abut against the battery cell body 20, so as to support the battery cell body 20, so as to protect the corners of the battery cell body 20 during the battery falling off process, and avoid the occurrence of angular deformation of the battery cell body 20.

[0074] In this embodiment, the gasket assembly further includes a side gasket, which is disposed between the cell body 20 and the inner side of the housing 10 , and the projection of the side gasket on the cell body 20 is formed inside the side area of the cell body 20 .

[0075] Specifically, in order to further improve the installation stability of the battery cell body 20 inside the shell 10, a side gasket can be set between the side of the battery cell body 20 and the inner wall of the shell 10. The side gasket abuts between the battery cell body 20 and the shell 10 to prevent the battery cell body 20 from shaking inside the shell 10 and colliding with the shell 10 during the battery falling process, causing the battery cell body 20 to shift.

[0076] In this embodiment, the side gasket can be arranged between the side surface of the battery cell body 20 and the inner wall surface of the shell 10 along the first direction, or it can be arranged between the side surface of the battery cell body 20 and the inner wall surface of the shell 10 along the second direction. Of course, side gaskets can also be arranged between the side surface and the inner wall surface of the shell 10 along both the first direction and the second direction.

[0077] In this embodiment, the side gasket is bonded and fixed to the cell body 20 . Specifically, this can be achieved by applying colloid to form an adhesive layer between the cell body 20 and the side gasket, or by using an adhesive tape 40 .

[0078] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0079] The battery cell used in the present application includes a shell 10, a battery cell body 20 and a gasket assembly, wherein the gasket assembly includes a bottom gasket 30, and the bottom gasket 30 is supported between the bottom surface of the shell 10 and the battery cell body 20 along the height direction of the shell 10. The bottom gasket 30 isolates the two ends of the battery cell body 20 facing the bottom surface of the shell 10 arranged along the first direction from the bottom surface of the shell 10, so as to avoid collision between the ends of the battery cell body 20 and the shell 10 during the battery falling process, thereby solving the problem in the prior art that the battery cell body 20 is prone to collision between the shell and the shell during the battery falling process, resulting in angular deformation of the corners of the end area of the battery cell body 20 facing the bottom surface of the shell 10.

[0080] The present application adopts a method of setting a bottom gasket 30 inside the installation cavity 110 of the shell 10 to realize that the bottom gasket 30 is supported between the battery cell body 20 and the bottom surface of the shell 10. The overall operation is simple, and the reasonable use of the internal space of the shell 10 for setting will not cause the problem of increasing the overall thickness of the battery cell. At the same time, it also avoids the problem of reduced liquid injection space after the core and the shell are adhered together due to the use of hot melt adhesive after the diaphragm is outwrapped in the prior art.

[0081] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0082] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0083] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery cell, characterized in that: The battery cell comprises: Housing (10); A battery cell body (20), the battery cell body (20) being arranged inside the housing (10); A gasket assembly, wherein the gasket assembly at least comprises a bottom gasket (30), wherein the bottom gasket (30) is arranged between the battery cell body (20) and the bottom surface of the shell (10), wherein the extension length of the bottom gasket (30) along a first direction is less than the extension length of the battery cell body (20), and wherein the two ends of the bottom gasket (30) along the first direction are spaced from the two side surfaces of the battery cell body (20) respectively to avoid the two ends of the battery cell body (20), and an isolation space is formed between the two ends of the battery cell body (20) and the bottom surface of the shell (10).

2. The battery cell according to claim 1, characterized in that Along the height direction of the housing (10), the projection of the bottom gasket (30) on the surface of the battery cell body (20) is located inside the surface of the battery cell body (20).

3. The battery cell according to claim 1, characterized in that Along the first direction, the distances between the two ends of the bottom gasket (30) and the two ends of the battery cell body (20) are equal.

4. The battery cell according to claim 1, characterized in that Along the first direction, the extension length of the bottom gasket (30) is 50%-70% of the extension length of the battery cell body (20).

5. The battery cell according to claim 1, characterized in that Along a second direction perpendicular to the first direction, the extension length of the bottom gasket (30) is 60%-80% of the extension length of the battery cell body (20).

6. The battery cell according to claim 1, characterized in that The bottom gasket (30) is fixedly connected to the bottom surface of the housing (10), and the battery cell body (20) is supported on the bottom gasket (30); or The bottom gasket (30) is fixedly connected to the battery cell body (20), and the bottom gasket (30) abuts against the bottom surface of the housing (10).

7. The battery cell according to claim 6, characterized in that When the bottom gasket (30) abuts against the bottom surface of the housing (10), The battery core further comprises a colloid, wherein the colloid is arranged between the bottom gasket (30) and the battery core body (20) to form an adhesive layer; and / or The battery cell further comprises an adhesive tape (40), and the bottom gasket (30) and the battery cell body (20) are fixedly connected via the adhesive tape (40).

8. The battery cell according to claim 1, characterized in that The gasket assembly further comprises a side gasket, which is arranged between the battery cell body (20) and the inner side surface of the housing (10), and the projection of the side gasket on the battery cell body (20) is formed inside the area of the side surface of the battery cell body (20).

9. The battery cell according to claim 1, characterized in that: The housing (10) comprises a bottom shell (101) and a cover plate (102); the bottom shell (101) and the cover plate (102) are arranged along a second direction perpendicular to the first direction; the bottom shell (101) and the cover plate (102) cooperate to form a mounting cavity (110); the battery cell body (20) and the gasket assembly are arranged inside the mounting cavity (110).

10. The battery cell according to claim 9, characterized in that: The top surface of the bottom shell (101) is provided with a liquid injection hole (120); and / or The bottom shell (101) and the cover plate (102) are fixed by welding or by fasteners.

11. The battery cell according to claim 1, characterized in that The first direction is the length direction of the bottom gasket (30); and / or The housing (10) is a cubic structure; and / or The bottom gasket (30) of the gasket assembly and the side gaskets of the gasket assembly are made of PET or silicone material that can undergo elastic deformation.

12. A battery, characterized in that: The battery comprises: At least one battery cell, wherein the battery cell is the battery cell according to any one of claims 1 to 11; The battery cell is arranged inside the shell.

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