Battery top cover and battery

Abstract

The utility model relates to a battery top cover and a battery. The battery top cover comprises a pole, upper plastic, a fixing piece, a supporting piece and a top cover piece, a pole hole is formed in the top cover piece, the first end of the pole is fixedly connected with the top cover piece, the second end of the pole penetrates through the pole hole and the supporting piece to be fixedly connected with the fixing piece, the upper plastic is arranged on the outer side of the supporting piece and the fixing piece, and the supporting piece is arranged between the fixing piece and the top cover piece. The projection of the supporting piece in the vertical direction at least partially coincides with the top cover piece; a first clamping part is formed on the supporting piece, a second clamping part is formed on the upper plastic, and the first clamping part and the second clamping part are matched in a clamping manner; the second clamping part abuts against the fixing piece, or the second clamping part abuts against the top cover piece. According to the battery top cover and the battery provided by the utility model, the pole can be firmly fixed, and the safety and the reliability are relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery top cover and battery. BACKGROUND

[0002] The battery is usually composed of the electric core, the shell and the battery top cover, wherein the battery top cover is usually installed at the upper part of the battery, has the functions such as sealing, electrical connection and protection of internal electric core, and the positive and negative pole columns of the battery are the key components of the internal and external circuit connection of the battery, the lower end of the pole column is connected with the positive and negative lead-out sheet of the electric core, forms internal electrical connection, and the upper end extends out of the top cover and is used for connecting the external circuit.

[0003] The existing top cover structure includes a top cover sheet, a pole column, a support piece and an upper plastic, after the pole column passes through the top cover sheet, the pole column is welded with a fixing piece, the upper plastic is covered on the outer side of the fixing piece and the pole column, and the connection structure of the pole column towards the outer side of the battery can be covered and protected. SUMMARY

[0004] Therefore, it is necessary to provide a battery top cover and battery with better fixing effect for the above problems.

[0005] In a first aspect, a battery top cover is provided, which includes a pole column, an upper plastic, a fixing piece, a support piece and a top cover sheet, wherein the top cover sheet is provided with a pole column hole, the first end of the pole column is fixedly connected with the top cover sheet, the second end passes through the pole column hole and the support piece, and is fixedly connected with the fixing piece, the upper plastic is arranged on the outer side of the support piece and the fixing piece, and the support piece is arranged between the fixing piece and the top cover sheet.

[0006] The support piece is formed with a first clamping part, the upper plastic is formed with a second clamping part, the second clamping part and the first clamping part are clamped and matched, and form an integral whole with the first clamping part.

[0007] In one of the embodiments, the first clamping part is arranged on the end face of the support piece, the second clamping part is arranged on the upper plastic, one of the first clamping part and the second clamping part includes a groove structure, and the other includes a protruding structure, the protruding structure is clamped and matched with the groove.

[0008] In one of the embodiments, the support is annular, the groove structure comprises a first groove arranged on the upper surface of the support, the first groove penetrates the outer sidewall of the support along the radial direction of the support, the upper surface of the second clamping part abuts against the fixing part, and the lower surface of the second clamping part abuts against the bottom surface of the first groove; and / or the groove structure comprises a second groove arranged on the lower surface of the support, the second groove penetrates the outer sidewall of the support along the radial direction of the support, the upper surface of the second clamping part abuts against the bottom surface of the second groove, and the lower surface of the second clamping part abuts against the top cover sheet.

[0009] In one of the embodiments, the groove structure comprises a second groove arranged on the lower surface of the support, the second groove penetrates the outer sidewall of the support along the radial direction of the support, the upper surface of the second clamping part abuts against the bottom surface of the second groove, and the lower surface of the second clamping part abuts against the top cover sheet.

[0010] In one of the embodiments, the projections of the first groove and the second groove in the vertical direction do not coincide.

[0011] In one of the embodiments,

[0012] The first clamping part is arranged on the outer sidewall of the support, and the second clamping part is arranged on the inner sidewall of the upper plastic; wherein,

[0013] One of the first clamping part and the second clamping part comprises a groove structure, and the other comprises a protruding structure, the protruding structure is clamped and matched with the groove; and / or,

[0014] The first clamping part comprises a first cutting surface arranged on the outer sidewall of the support, and the second clamping part comprises a second cutting surface arranged on the inner sidewall of the upper plastic, the first cutting surface is clamped and matched with the second cutting surface.

[0015] In one of the embodiments, the upper plastic and the second clamping part are integrally formed, and the upper plastic can be integrated with the support.

[0016] In one of the embodiments, the top cover sheet is provided with an explosion-proof hole, the explosion-proof hole is provided with an explosion-proof valve, the explosion-proof valve comprises an explosion-proof sheet covering the explosion-proof hole, the explosion-proof sheet is provided with a weak area, the thickness of the weak area is less than the thickness of a non-weak area of the explosion-proof sheet, and at least part of the non-weak area is connected with the top cover sheet.

[0017] In one of the embodiments, the explosion-proof valve further comprises an explosion-proof valve protection film, the protection film is arranged on the explosion-proof hole of the explosion-proof valve, and an exhaust hole is formed in the explosion-proof valve protection film.

[0018] In a second aspect, a battery is provided, comprising a housing, an electric core and the battery top cover as described in the first aspect or any one of the embodiments of the first aspect, the housing is used for accommodating the electric core, the housing has an opening, and the battery top cover is used for closing the opening.

[0019] The battery top cover and the battery described above, the two ends of the pole are fixedly connected with the top cover sheet and the fixing piece respectively, and are supported by the support piece, so that the pole is more stable in the fixed position, thereby reducing the risk of loosening or deviation of the pole caused by external force, and improving the overall structural strength of the battery top cover; the upper plastic covers the outer side of the support piece and the fixing piece, which can effectively prevent the penetration of external liquid or gas, thereby enhancing the waterproof and sealing performance of the battery top cover, protecting the internal battery components, and the support piece and the upper plastic form the first clamping part and the second clamping part respectively, and the stable connection is realized through the clamping cooperation, the second clamping part can abut against the fixing piece or the top cover sheet, so that the connection with the fixing piece and the top cover sheet is more stable, and the structure has flexibility, different contact positions can be selected according to requirements, and different battery design requirements can be adapted. The above battery top cover and battery can firmly fix the pole, and have high safety and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A top view of the battery top cover provided by an embodiment of the present application;

[0022] Figure 2 A cross-sectional structure schematic view of the A-A plane of the battery top cover provided by an embodiment of the present application;

[0023] Figure 3 A local enlarged view of the battery top cover provided by an embodiment of the present application;

[0024] Figure 4 A cross-sectional structure schematic view of the A-A plane of the battery top cover provided by an embodiment of the present application;

[0025] Figure 5 A local enlarged view of the battery top cover provided by an embodiment of the present application;

[0026] Figure 6 The structural explosion map of the battery top cover provided by an embodiment of the utility model;

[0027] Figure 7 The structural schematic diagram of the supporting piece of the battery top cover provided by an embodiment of the utility model.

[0028] In order to make the above and other objects, features, advantages and embodiments of the utility model more obvious and easy to understand, the following description of the symbols is as follows:

[0029] 100, battery top cover; 110, pole; 111, fixed part; 112, welding blind hole; 120, upper plastic; 130, fixed piece; 140, supporting piece; 141, first groove; 142, second groove; 143, first tangent plane; 150, top cover sheet; 151, pole hole; 152, explosion-proof hole; 160, L-shaped sealing ring; 161, horizontal part; 162, vertical part; 170, lower plastic; 180, explosion-proof valve; 181, explosion-proof sheet; 182, weak area; 183, pressure-sensitive adhesive; 184, explosion-proof valve protection film; 191, liquid injection hole; 192, liquid blocking plate; 193, through hole. DETAILED DESCRIPTION

[0030] In order to make the above and other objects, features, advantages and embodiments of the utility model more obvious and easy to understand, the following description of the symbols is as follows:

[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0032] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0035] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not the only embodiment.

[0036] Figure 1 A top view of a battery top cover provided by an embodiment of the present application is provided. Figure 2 A cross-sectional structure schematic view of the A-A plane of the battery top cover provided by an embodiment of the present application is provided. Figure 3 A local enlarged view of the battery top cover provided by an embodiment of the present application is provided. Figure 4 A cross-sectional structure schematic view of the A-A plane of the battery top cover provided by an embodiment of the present application is provided. Figure 5 A local enlarged view of the battery top cover provided by an embodiment of the present application is provided.Figure 6 The utility model discloses an explosion map of the structure of the battery top cover provided by an embodiment of the utility model, Figure 7 The utility model discloses a structure schematic drawing of the support piece of the battery top cover provided by an embodiment of the utility model. Figure 1 The utility model discloses a battery top cover 100, the battery top cover 100 includes pole 110, upper plastic 120, fixed part 130, support piece 140 and top cover sheet 150, wherein, top cover sheet 150 is set up with pole hole 151, and the first end of pole 110 is fixedly connected with top cover sheet 150, and the second end passes through pole hole 151 and support piece 140 and is fixedly connected with fixed part 130, and upper plastic 120 is arranged on the outside of support piece 140 and fixed part 130, and support piece 140 is arranged between fixed part 130 and top cover sheet 150, and the first clamping part is formed on support piece 140, and the second clamping part is formed on upper plastic 120, and the first clamping part and the second clamping part are clamped and cooperate, and form the whole with the first clamping part.

[0037] By fixing the bottom end of pole 110 on the bottom surface of top cover sheet 150, and fixing the top end of pole 110 through fixedly connected fixed part 130, support piece 140 can support fixed part 130, and then realize the fixing of the relative position of pole 110, fixed part 130 and top cover sheet 150 in the vertical direction. The second end of pole 110 can be fixed with fixed part 130 through welding, and the projection on the plan view of fixed part 130 can fall on top cover sheet 150. Since fixed part 130 abuts with top cover sheet 150 and support piece 140, through the above setting, not only the connection strength of fixed part 130 and pole 110 can be ensured, but also the uneven stress of fixed part 130 caused by the misalignment of the abutting position of fixed part 130 on support piece 140 and the abutting position of top cover sheet 150 on support piece 140 can be avoided, and then the connection strength between pole 110, fixed part 130, support piece 140 and top cover sheet 150 can be ensured. By setting the first clamping part and the second clamping part on support piece 140 and upper plastic 120 respectively, and clamping and cooperating the second clamping part and the second clamping part, the relative rotation of support piece 140 and upper plastic 120 can be avoided, the second clamping part abuts with fixed part 130 and top cover sheet 150, and the relative displacement between fixed part 130 and top cover sheet 150 and upper plastic 120 can also be reduced, so that upper plastic 120 can better fix fixed part 130, support piece 140 and top cover sheet 150, and since fixed part 130 is fixedly connected with pole 110, pole 110 can also be more firm.

[0038] The two ends of the pole 110 are fixedly connected with the top cover sheet 150 and the fixing member 130 respectively, and are supported by the support member 140, so that the pole 110 is more stable at the fixed position, thereby reducing the risk of loosening or deviation of the pole 110 caused by external force, and improving the overall structural strength of the battery top cover 100; the upper plastic 120 covers the outer side of the support member 140 and the fixing member 130, which can effectively prevent external liquid or gas from penetrating, thereby enhancing the waterproof and sealing performance of the battery top cover 100, protecting the internal battery components, and the support member 140 and the upper plastic 120 form a first clamping portion and a second clamping portion respectively, which are stably connected through clamping cooperation, the second clamping portion can abut against the fixing member 130 or the top cover sheet 150, so that the connection with the fixing member 130 and the top cover sheet 150 is more stable, and the structure has flexibility, different contact positions can be selected according to requirements, and different battery design requirements can be adapted. The above battery top cover 100 can firmly fix the pole 110, and has high safety and reliability.

[0039] In an exemplary embodiment, the end surface of the support member 140 is provided with a first clamping portion, and the upper plastic 120 is provided with a second clamping portion, one of the first clamping portion and the second clamping portion includes a groove structure, and the other includes a protrusion structure, and the protrusion structure is clamped with the groove.

[0040] In an exemplary embodiment, the support member 140 is annular, the groove structure includes a first groove 141 provided on the upper surface of the support member 140, the first groove 141 penetrates the outer side wall of the support member 140 along the radial direction of the support member 140, the upper surface of the second clamping portion abuts against the fixing member 130, and the lower surface of the second clamping portion abuts against the bottom surface of the first groove 141.

[0041] In an exemplary embodiment, the groove structure includes a second groove provided on the lower surface of the support member 140, the second groove penetrates the outer side wall of the support member 140 along the radial direction of the support member 140, the upper surface of the second clamping portion abuts against the bottom surface of the second groove, and the lower surface of the second clamping portion abuts against the top cover sheet 150.

[0042] In an exemplary embodiment, the projections of the first groove 141 and the second groove 142 in the vertical direction do not coincide. Since the opening of the groove on the support member 140 will affect the structural strength and stress distribution of the groove portion, in order to make the stress distribution on the support member 140 more uniform, the projections of the first groove 141 and the second groove 142 in the vertical direction do not coincide, so as to avoid the coincidence of the positions of the first groove 141 and the second groove 142, which may cause the support member 140 to be locally too thin or insufficient in strength, and prone to local failure.

[0043] In an exemplary embodiment, the outer sidewall of the support 140 is provided with a first clamping part, and the inner sidewall of the upper plastic 120 is provided with a second clamping part; wherein one of the first clamping part and the second clamping part comprises a groove structure, and the other comprises a protrusion structure, the protrusion structure being clamped and matched with the groove; and / or the first clamping part comprises a first cutting surface 143 provided on the outer sidewall of the support 140, and the second clamping part comprises a second cutting surface provided on the inner sidewall of the upper plastic 120, the first cutting surface 143 being clamped and matched with the second cutting surface.

[0044] Providing a plurality of first grooves 141 or a plurality of second grooves 142 can limit the upper plastic 120 and the support 140 from different directions, so that even if one second clamping part fails, the other second clamping parts still have the limiting function, which can further improve the stability of the connection.

[0045] In an exemplary embodiment, the plurality of first grooves 141 are uniformly distributed along the circumference of the support 140, and / or the plurality of second grooves 142 are uniformly distributed along the circumference of the support 140. The uniform distribution of the first grooves 141 and the second grooves 142 along the circumference of the support 140 can make the support 140 have a regular outer shape, thereby facilitating the uniform distribution of the load.

[0046] In an exemplary embodiment, the plurality of first grooves 141 and the plurality of second grooves 142 are staggered along the circumference of the support 140.

[0047] In an exemplary embodiment, the upper plastic 120 and the second clamping part are integrally formed, and the upper plastic 120 can be integrated with the support 140. The upper plastic 120 can be made by an injection molding process, and the upper plastic 120 and the second clamping part can be formed at one time in the injection molding process, thereby avoiding the use of additional connecting parts or processes to connect the two, improving the processing efficiency, and the integrally formed structure has high structural strength.

[0048] In an exemplary embodiment, the top cover sheet 150 is provided with an explosion-proof hole, and the explosion-proof hole is provided with an explosion-proof valve, the explosion-proof valve comprising an explosion-proof sheet covering the explosion-proof hole, the explosion-proof sheet being provided with a weak area, the thickness of the weak area being less than the thickness of a non-weak area of the explosion-proof sheet, and at least part of the non-weak area being connected with the top cover sheet 150.

[0049] In an exemplary embodiment, the first end of the pole column 110 is provided with a fixed part 111, the outer diameter of the fixed part 111 is larger than the size of the pole column 110 and the size of the pole hole 151, an L-shaped sealing ring 160 is arranged between the pole column 110 and the top cover sheet 150, the L-shaped sealing ring 160 includes a horizontal part 161 and a vertical part 162 connected to each other, the horizontal part 161 is arranged between the fixed part 111 and the top cover sheet 150, and the vertical part 162 is arranged between the side wall of the pole column 110 and the pole hole 151. The L-shaped sealing ring 160 is arranged between the pole column 110 and the top cover sheet 150, and is in interference fit with the pole column 110 and the top cover sheet 150, and plays a sealing role. The horizontal part 161 thereof is abutted between the bottom end of the pole column 110 and the bottom surface of the top cover sheet 150, and is in a compressed state. The rebounding force of the sealing ring has a downward thrust on the bottom of the pole column 110, so that the abutment between the fixed part 130, the support part 140 and the top surface of the top cover sheet 150 is more compact. The vertical part 162 extends into the space between the top cover sheet 150 and the pole column 110, and the top end thereof abuts against the support part 140. The rebounding force of the vertical part 162 can make the abutment between the support part 140 and the fixed part 130 more compact; at the same time, it can also achieve good sealing protection for the side wall of the pole column 110, so as to avoid the entry of liquid outside the battery cell into the top cover structure and contact with the pole column 110, thereby causing corrosion of the pole column 110. In some exemplary embodiments, the compression amount of the sealing ring is 35% to 60%.

[0050] In an exemplary embodiment, the top cover sheet 150 is provided with an explosion-proof hole 153, and the explosion-proof hole 153 is provided with an explosion-proof valve 180. The explosion-proof valve 180 includes an explosion-proof sheet 181 covering the explosion-proof hole 153, and the explosion-proof sheet 181 is provided with a weak area 182. The thickness of the weak area 182 is smaller than the thickness of the non-weak area 182 of the explosion-proof sheet 181, and at least part of the non-weak area 182 is connected with the top cover sheet 150. The top cover sheet 150 is provided with an explosion-proof hole 153, and the top cover structure further includes an explosion-proof valve 180 arranged in the explosion-proof hole 153. The explosion-proof valve 180 includes an explosion-proof sheet 181, and the explosion-proof sheet 181 is provided with a weak area 182. The thickness of the weak area 182 is thinner than the thickness of other positions of the explosion-proof sheet 181. The explosion-proof sheet 181 has a length of 1 / 5 to 1 / 4 of the circumference without the weak area 182, so as to avoid the explosion-proof sheet 181 from being completely blown off and flowing to other positions to cause secondary accidents, and improve the safety of the battery. The explosion-proof valve 180 further includes an explosion-proof valve protection film 184, which covers the explosion-proof hole 153, and the explosion-proof valve protection film 184 is provided with an exhaust hole for facilitating exhaust. The explosion-proof valve protection film 184 can be bonded to the edge of the explosion-proof hole 153 by pressure-sensitive adhesive 183, and part of the edge of the explosion-proof valve protection film 184 is not fixed on the explosion-proof hole 153 by the pressure-sensitive adhesive 183, so as to facilitate exhaust.

[0051] In an exemplary embodiment, the top end of the pole 110 is used for electrical connection with external equipment, and the top surface of the pole 110 is provided with a welding blind hole 112, facilitating welding with external equipment. The bottom end of the pole 110 is used for connection with the battery cell inside the battery. The welding blind hole 112 can be a conical hole or a counterbore blind hole.

[0052] In an exemplary embodiment, the top cover sheet 150 is further provided with a liquid injection hole 191, and the lower plastic 170 is provided with a corresponding through hole 193, and the lower plastic 170 is further provided with a liquid blocking plate 192, which is arranged at the through hole 193 and leaves a gap with the through hole 193, so as to facilitate the input of electrolyte, and the projection of the liquid blocking plate 192 on the top cover sheet 150 can completely cover the through hole 193.

[0053] In an exemplary embodiment, a battery is also provided, which comprises a shell, a battery cell and a top cover as described in the above embodiments, the shell is used for accommodating the battery cell and the top cover, and the shell has an opening, and the top cover is used for closing the opening.

[0054] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0055] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A battery top cover characterized by, The battery top cover comprises a pole, an upper plastic, a fixing part, a support part and a top cover sheet, wherein a pole hole is formed on the top cover sheet, the first end of the pole is fixedly connected with the top cover sheet, the second end of the pole passes through the pole hole and the support part, and is fixedly connected with the fixing part, the upper plastic is arranged outside the support part and the fixing part, and the support part is arranged between the fixing part and the top cover sheet. A first clamping part is formed on the support part, and a second clamping part is formed on the upper plastic, and the second clamping part and the first clamping part are clamped and matched.

2. The battery header of claim 1, wherein, The first clamping part is arranged on the end face of the support part, the second clamping part is arranged on the upper plastic, one of the first clamping part and the second clamping part comprises a groove structure, and the other comprises a protruding structure, the protruding structure is clamped and matched with the groove.

3. The battery header of claim 2, wherein, The support part is annular, the groove structure comprises a first groove arranged on the upper surface of the support part, the first groove penetrates the outer side wall of the support part along the radial direction of the support part, the upper surface of the second clamping part abuts against the fixing part, and the lower surface of the second clamping part abuts against the bottom surface of the first groove.

4. The battery header of claim 3, wherein, The groove structure comprises a second groove arranged on the lower surface of the support part, the second groove penetrates the outer side wall of the support part along the radial direction of the support part, the upper surface of the second clamping part abuts against the bottom surface of the second groove, and the lower surface of the second clamping part abuts against the top cover sheet.

5. The battery header of claim 4, wherein, The projections of the first groove and the second groove in the vertical direction do not coincide.

6. The battery header of claim 1, wherein, The first clamping part is arranged on the outer side wall of the support part, and the second clamping part is arranged on the inner side wall of the upper plastic. One of the first clamping part and the second clamping part comprises a groove structure, and the other comprises a protruding structure, the protruding structure is clamped and matched with the groove; and / or, The first clamping part comprises a first cutting surface arranged on the outer side wall of the support part, and the second clamping part comprises a second cutting surface arranged on the inner side wall of the upper plastic, the first cutting surface is clamped and matched with the second cutting surface.

7. The battery cover of claim 1, wherein, The upper plastic and the second clamping part are integrally formed, and the upper plastic can be integrated with the support part.

8. The battery cup of claim 1, wherein: An explosion-proof hole is formed on the top cover sheet, an explosion-proof valve is arranged on the explosion-proof hole, the explosion-proof valve comprises an explosion-proof sheet covering the explosion-proof hole, a weak area is arranged on the explosion-proof sheet, the thickness of the weak area is smaller than that of a non-weak area on the explosion-proof sheet, and at least part of the non-weak area is connected with the top cover sheet.

9. The battery header of claim 8, wherein, The explosion-proof valve further comprises an explosion-proof valve protection film, the protection film covers the explosion-proof hole of the explosion-proof valve, and an exhaust hole is formed on the explosion-proof valve protection film.

10. A battery, characterized by The battery top cover comprises a pole, an upper plastic, a fixing part, a support part and a top cover sheet, wherein a pole hole is formed on the top cover sheet, the first end of the pole is fixedly connected with the top cover sheet, the second end of the pole passes through the pole hole and the support part, and is fixedly connected with the fixing part, the upper plastic is arranged outside the support part and the fixing part, and the support part is arranged between the fixing part and the top cover sheet.

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