Battery top cover and battery

Abstract

The utility model relates to a battery top cover and a battery. The battery top cover at least comprises a cover plate and a conduction assembly, wherein the cover plate is provided with a mounting hole penetrating through the thickness direction of the cover plate from the inner side to the outer side, and a first positioning part is arranged on the outer side face of the cover plate. The conduction assembly comprises a pole piece, a pressing plate and a first gasket piece; the pole piece comprises a pole body and an inner connecting part; the pole body is arranged in the mounting hole in a penetrating manner, the inner connecting part is fixedly arranged on the inner side of the pole body, and the cross section of the inner connecting part is larger than that of the pole body; the pressing plate is fixedly arranged on the outer side of the pole body; the first gasket piece is arranged between the pressing plate and the cover plate so as to separate the cover plate from the pressing plate; a first through hole penetrating through the thickness direction of the first gasket piece from the inner side to the outer side is formed in the first gasket piece, and the pole body penetrates through the first through hole; a first positioning groove is formed in the inner side face of the first gasket piece, and the first positioning groove is configured to be matched with the first positioning part so that the first gasket piece can be tightly pressed on the cover plate through the pressing plate.

Description

Technical Field

[0001] The present disclosure relates to the field of power batteries. More precisely, the present disclosure relates to a battery top cover; the present disclosure also relates to a power battery. Background Art

[0002] With the development of the new energy industry, the market demand for various batteries such as lithium-ion batteries is increasing day by day. The battery top cover, which seals the battery pack and provides electrical connection terminals such as pole columns, is an important part of the battery.

[0003] In the existing battery top cover structures, the assembly is generally rather cumbersome, and situations such as misalignment of component installation are likely to occur, resulting in a low yield rate of the assembled batteries, which is not conducive to reducing production costs and improving battery production efficiency. Utility Model Content

[0004] The present disclosure provides a battery top cover and a battery to solve the problems existing in the prior art.

[0005] According to a first aspect of the present disclosure, there is provided a battery top cover, comprising:

[0006] A cover plate, the cover plate is provided with a mounting hole penetrating through its thickness direction from the inside to the outside, and a first positioning portion is provided on the outer side surface of the cover plate;

[0007] A conduction assembly, the conduction assembly includes a pole column member, a pressing plate and a first gasket member;

[0008] The pole column member includes a pole column body and an inner connection portion; the pole column body penetrates through the mounting hole, the inner connection portion is fixedly arranged on the inner side of the pole column body, and the inner connection portion is configured such that its cross-section is larger than that of the pole column body;

[0009] The pressing plate is fixedly arranged on the outer side of the pole column body;

[0010] The first gasket member is arranged between the pressing plate and the cover plate to separate the cover plate and the pressing plate; the first gasket member is provided with a first through hole penetrating through its thickness direction from the inside to the outside, and the pole column body penetrates through the first through hole; a first positioning groove is provided on the inner side surface of the first gasket member, and the first positioning groove is configured to cooperate with the first positioning portion so that the pressing plate presses the first gasket member against the cover plate.

[0011] In an embodiment of the present disclosure, the first positioning portion is a strip-shaped flange extending along a straight line; the first positioning groove is a strip-shaped positioning groove matching the strip-shaped flange.

[0012] In an embodiment of the present disclosure, a second positioning groove is provided on the outer side surface of the cover plate;

[0013] The inner side surface of the first gasket member is provided with a second positioning portion, and the second positioning portion is configured to cooperate with the second positioning groove so that the pressing plate presses the first gasket member against the cover plate.

[0014] In an embodiment of the present disclosure, at least two first positioning portions and / or second positioning grooves are provided, and each of the first positioning portions and / or second positioning grooves is configured to be provided on the outer side of the circumferential direction of the mounting hole; at least two first positioning grooves and / or second positioning portions are provided, and each of the first positioning grooves and / or second positioning portions is configured to be distributed along the circumferential direction of the first gasket member.

[0015] In an embodiment of the present disclosure, four groups of first positioning portions and / or second positioning grooves are provided, and each group of the first positioning portions and / or second positioning grooves is configured to be evenly distributed on the outer side of the circumferential direction of the mounting hole; four groups of first positioning grooves and / or second positioning portions are provided, and each of the first positioning grooves and / or second positioning portions is configured to be evenly distributed along the circumferential direction of the first gasket member.

[0016] In an embodiment of the present disclosure, the conduction assembly further includes a second gasket member, and the second gasket member is clamped between the cover plate and the inner connection portion.

[0017] In an embodiment of the present disclosure, two conduction assemblies are provided, one of the conduction assemblies is configured to be used as a positive conduction assembly, and the other conduction assembly is configured to be used as a negative conduction assembly; the extending direction from one conduction assembly to the other conduction assembly is the conduction direction;

[0018] The two side walls of the second gasket member in the conduction direction are configured to be located on the outer sides of the two sides of the inner connection portion in the conduction direction; flow channels penetrating along the conduction direction are provided on both side walls of the second gasket member in the conduction direction.

[0019] In an embodiment of the present disclosure, the conduction assembly further includes a sealing ring;

[0020] A setting hole is provided in the second gasket member. In the cross-section of the battery top cover, the sealing ring is configured to be clamped between the cover plate and the first gasket member, and the inner peripheral edge of the sealing ring is configured to extend into the mounting hole.

[0021] In an embodiment of the present disclosure, the pressing plate is in a rounded arc shape, and the extending dimension in any direction is greater than a set dimension.

[0022] According to a second aspect of the present disclosure, a battery is provided, including the battery top cover.

[0023] The present disclosure provides a battery top cover, which can be installed on a battery cell. Specifically, the battery cell includes a housing and a core package. An accommodation cavity for accommodating the core package and electrolyte is provided inside the housing. The core package is installed in the accommodation cavity. The battery top cover is installed at the opening position of the housing and seals the core package and electrolyte inside the accommodation cavity of the housing.

[0024] Specifically, the battery top cover at least includes a cover plate and a conduction component; wherein, the cover plate is provided with a mounting hole penetrating through its thickness direction from the inner side to the outer side, and a first positioning portion is provided on the outer side surface of the cover plate.

[0025] The conduction component includes a pole piece, a pressing plate and a first gasket; the pole piece includes a pole body and an inner connection portion; the pole body passes through the mounting hole, the inner connection portion is fixedly arranged on the inner side of the pole body, and the inner connection portion is configured to have a cross-section larger than that of the pole body; the pressing plate is fixedly arranged on the outer side of the pole body; the first gasket is arranged between the pressing plate and the cover plate to separate the cover plate and the pressing plate; the first gasket is provided with a first through hole penetrating through its thickness direction from the inner side to the outer side, and the pole body passes through the first through hole; a first positioning groove is arranged on the inner side surface of the first gasket, and the first positioning groove is configured to cooperate with the first positioning portion so that the pressing plate presses the first gasket against the cover plate.

[0026] During the assembly process of the battery top cover of the present disclosure, the pole piece can be installed from the inner side of the cover plate, and the pole body passes through the mounting hole on the cover plate. Then, the first gasket is sleeved on the pole body, and after the first positioning portion on the cover plate corresponds to the first positioning groove on the first gasket, the pressing plate is placed above the pole body and fixedly connected to the pole body to complete the assembly of the battery top cover of the present disclosure.

[0027] Compared with the existing battery top cover, the battery top cover of the present disclosure can effectively improve the assembly efficiency, and the cover plate and the first gasket cooperate with each other through the first positioning groove and the first positioning portion, and are not easily misaligned during the assembly process, so that the production yield of the battery top cover of the present disclosure can be effectively improved, the production efficiency of the battery can be improved, and the production cost can be saved; in addition, since the first positioning portion is provided on the cover plate and the first positioning groove is provided corresponding to the first gasket, the torsional strength of the cover plate can be effectively improved, and further the overall structural strength of the battery top cover of the present disclosure can be improved.

[0028] Other features and advantages of the present disclosure will become clear through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.

[0030] Figure 1 It is a perspective view of the battery top cover provided by an embodiment of the present disclosure;

[0031] Figure 2 It is an exploded view of the battery top cover provided by an embodiment of the present disclosure;

[0032] Figure 3 It is a perspective view of the first gasket provided by an embodiment of the present disclosure;

[0033] Figure 4 It is a side view of the battery top cover provided by an embodiment of the present disclosure;

[0034] Figure 5 It is a bottom view of the battery top cover provided by an embodiment of the present disclosure.

[0035] Figures 1 to 5 The corresponding relationship between the names of the components and the reference numerals in is as follows:

[0036] 10. Cover plate; 11. Mounting hole; 12. First positioning portion; 13. Second positioning groove; 20. Conductive component; 21. Pole piece; 211. Pole body; 212. Inner connection portion; 22. Pressure plate; 23. First gasket; 231. First positioning groove; 232. Second positioning portion; 24. Second gasket; 241. Flow channel. 25. Sealing ring. Detailed implementation manners

[0037] Otherwise, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present disclosure. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present disclosure. Therefore, the present disclosure is not limited by the specific implementations disclosed below. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0039] The terms used in one or more embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present disclosure. The singular forms "a", "the", and "said" used in one or more embodiments of the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present disclosure refers to and encompasses any or all possible combinations of one or more of the associated listed items.

[0040] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than defining the absolute positions of these relevant parts. In this document, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc. Unless otherwise specified, the numerical ranges in this document include not only the entire range within its two endpoints, but also several sub-ranges included therein.

[0041] The present disclosure provides a battery top cover, which can be installed on a battery cell. Specifically, the battery cell includes a housing and a core package. A receiving cavity for receiving the core package and electrolyte is provided in the housing. The core package is installed in the receiving cavity, and the battery top cover is installed at the opening position of the housing and seals the core package and electrolyte inside the receiving cavity of the housing.

[0042] Specifically, the battery top cover at least includes a cover plate and a conduction component; wherein, the cover plate is provided with a mounting hole penetrating its thickness direction from the inside to the outside, and a first positioning portion is provided on the outer side surface of the cover plate.

[0043] The conduction component includes a pole piece, a pressing plate, and a first gasket piece; the pole piece includes a pole body and an inner connection part; the pole body passes through the mounting hole, the inner connection part is fixedly arranged inside the pole body, and the inner connection part is configured with a cross-section larger than that of the pole body; the pressing plate is fixedly arranged outside the pole body; the first gasket piece is arranged between the pressing plate and the cover plate to separate the cover plate and the pressing plate; a first through hole penetrating through its thickness direction from the inside to the outside is arranged on the first gasket piece, and the pole body passes through the first through hole; a first positioning groove is arranged on the inner side surface of the first gasket piece, and the first positioning groove is configured to cooperate with the first positioning part so that the pressing plate presses the first gasket piece against the cover plate.

[0044] During the assembly process of the battery top cover of the present disclosure, the pole piece can be installed from the inside of the cover plate, and the pole body passes through the mounting hole on the cover plate. Then, the first gasket piece is sleeved on the pole body, and after the first positioning part on the cover plate corresponds to the first positioning groove on the first gasket piece, the pressing plate is placed above the pole body, and the pressing plate is fixedly connected to the pole body to complete the assembly of the battery top cover of the present disclosure.

[0045] Compared with the existing battery top cover, the battery top cover of the present disclosure can effectively improve the assembly efficiency, and the cover plate and the first gasket piece cooperate with each other through the first positioning groove and the first positioning part, and are not easily misaligned during the assembly process, so that the production yield of the battery top cover of the present disclosure can be effectively improved, the production efficiency of the battery can be improved, and the production cost can be saved; in addition, since the first positioning part is arranged on the cover plate and the first positioning groove is arranged corresponding to the first gasket piece, the torsional strength of the cover plate can be effectively improved, and further the overall structural strength of the battery top cover of the present disclosure can be improved.

[0046] For the sake of easy understanding, hereinafter, with reference to Figures 1 to 5 and in combination with an embodiment, the specific structure and working principle of the battery top cover of the present disclosure will be described in detail. It should be noted that the present disclosure also provides a battery. For the sake of keeping the text concise, the battery will be introduced together when describing the battery top cover in this article.

[0047] As Figures 1 to 5 shown, the present disclosure provides a battery top cover which can be installed on a battery cell. Specifically, the battery cell includes a housing and a core package. An accommodation cavity for accommodating the core package and electrolyte is arranged inside the housing. The core package is installed in the accommodation cavity. The battery top cover is installed at the opening position of the housing and seals the core package and the electrolyte inside the accommodation cavity of the housing.

[0048] Specifically, the battery top cover at least includes a cover plate 10 and a conduction component 20; wherein, the cover plate 10 is provided with a mounting hole 11 penetrating through its thickness direction from the inside to the outside, and a first positioning part 12 is arranged on the outer side surface of the cover plate 10.

[0049] The conduction component 20 includes a pole piece 21, a pressing plate 22, and a first gasket piece 23; the pole piece 21 includes a pole body 211 and an inner connection part 212; the pole body 211 passes through the mounting hole 11, and the inner connection part 212 is fixedly arranged on the inner side of the pole body 211, and the inner connection part 212 is configured to have a cross-section larger than that of the pole body 211. Specifically, the inner connection part 212 is used for electrically connecting with the core package inside the battery; the inner connection part 212 can be fixedly connected with the pole body 211 in advance, or can be integrally formed.

[0050] The pressing plate 22 is fixedly arranged on the outer side of the pole body 211, the pressing plate 22 is electrically conductive with the pole body 211, and the pressing plate 22 can be used for welding components such as wires, so as to facilitate the electrical connection between the battery and the outside.

[0051] The first gasket piece 23 is arranged between the pressing plate 22 and the cover plate 10. Specifically, the first gasket piece 23 can be an insulating piece to separate the cover plate 10 and the pressing plate 22, preventing electrical conduction between the pole piece 21 and the cover plate 10; it can also be a conductive piece, so as to be electrically conductive with the cover plate 10; specifically, in an embodiment of the present disclosure, the first gasket piece 23 is a conductive piece when applied to the positive electrode and an insulating piece when applied to the negative electrode. In another embodiment of the present disclosure, the first gasket piece 23 is an insulating piece when applied to both the positive electrode and the negative electrode.

[0052] As Figures 1 to 3 shown, the first gasket piece 23 is provided with a first through hole penetrating its thickness direction from the inside to the outside, and the pole body 211 passes through the first through hole; the inner side surface of the first gasket piece 23 is provided with a first positioning groove 231, and the first positioning groove 231 is configured to cooperate with the first positioning part 12, so that the pressing plate 22 presses the first gasket piece 23 on the cover plate 10.

[0053] During the assembly process of the battery top cover of the present disclosure, the pole piece 21 can be installed from the inside of the cover plate 10, and the pole body 211 passes through the mounting hole 11 on the cover plate 10. Then, the first gasket piece 23 is sleeved on the pole body 211, and after the first positioning part 12 on the cover plate 10 corresponds to the first positioning groove 231 on the first gasket piece 23, the pressing plate 22 is placed above the pole body 211, and the pressing plate 22 is fixedly connected with the pole body 211 to complete the assembly of the battery top cover of the present disclosure.

[0054] Compared with the existing battery top cover, the battery top cover of the present disclosure can effectively improve the assembly efficiency. Moreover, the cover plate 10 and the first gasket member 23 cooperate with each other through the first positioning groove 231 and the first positioning portion 12, and are not easily displaced during the assembly process. Thus, the production yield of the battery top cover of the present disclosure can be effectively improved, the production efficiency of the battery can be increased, and the production cost can be saved. In addition, since the first positioning portion 12 is provided on the cover plate 10 and the first positioning groove 231 is provided corresponding to the first gasket member 23, the torsional strength of the cover plate 10 can be effectively enhanced, and further the overall structural strength of the battery top cover of the present disclosure can be improved.

[0055] Specifically, as Figure 2 and Figure 3 shown, in an embodiment of the present disclosure, the first positioning portion 12 is a strip-shaped flange extending along a straight line; the first positioning groove 231 is a strip-shaped positioning groove matching the strip-shaped flange. Since the first positioning portion 12 is a strip-shaped flange extending along a straight line and the first positioning groove 231 is a strip-shaped positioning groove matching the strip-shaped flange, the processing difficulty of the first positioning portion 12 and the first positioning groove 231 can be effectively reduced, and the torsional strength of the cover plate 10 and the first gasket member 23 can be improved.

[0056] As Figure 2 and Figure 3 shown, in an embodiment of the present disclosure, a second positioning groove 13 is provided on the outer side surface of the cover plate 10; a second positioning portion 232 is provided on the inner side surface of the first gasket member 23, and the second positioning portion 232 is configured to cooperate with the second positioning groove 13 so that the pressing plate 22 presses the first gasket member 23 against the cover plate 10. As Figure 3 shown, the second positioning portion 232 can be cylindrical or square-shaped, and is not limited herein.

[0057] In this way, during the assembly process of the battery top cover of the present disclosure, the pole piece 21 can be installed from the inner side of the cover plate 10, and the pole body 211 passes through the mounting hole 11 on the cover plate 10. Then, the first gasket member 23 is sleeved on the pole body 211, and the first positioning portion 12 on the cover plate 10 corresponds to the first positioning groove 231 on the first gasket member 23, and the second positioning groove 13 on the cover plate 10 corresponds to the second positioning portion 232 on the first gasket member 23. After that, the pressing plate 22 is placed above the pole body 211, and the pressing plate 22 is fixedly connected to the pole body 211 to complete the assembly of the battery top cover of the present disclosure.

[0058] Since the cover plate 10 and the first gasket member 23 are simultaneously and mutually engaged through the first positioning groove 231 and the first positioning portion 12, and the second positioning groove 13 and the second positioning portion 232, it is less likely to be misaligned during the assembly process, which can further effectively improve the production yield of the battery top cover of the present disclosure. It can also further improve the torsional strength of the cover plate 10 and the first gasket member 23, thereby improving the overall structural strength of the battery top cover of the present disclosure.

[0059] Specifically, as Figure 2 and Figure 3 shown, in an embodiment of the present disclosure, at least two first positioning portions 12 and / or second positioning grooves 13 are provided, and each of the first positioning portions 12 and / or second positioning grooves 13 is configured to be disposed on the outer circumference of the mounting hole 11; at least two first positioning grooves 231 and / or second positioning portions 232 are provided, and each of the first positioning grooves 231 and / or second positioning portions 232 is configured to be distributed along the circumference of the first gasket member 23.

[0060] In this way, it can be ensured that all circumferential portions of the first gasket member 23 can be engaged with the first positioning portions 12 and / or second positioning grooves 13 on the cover plate 10 through the first positioning grooves 231 and / or second positioning portions 232, thereby preventing any circumferential portion of the first positioning groove 231 from being misaligned relative to the cover plate 10. In addition, since each of the first positioning portions 12 and / or second positioning grooves 13 is disposed on the outer circumference of the mounting hole 11 of the cover plate 10 and the first positioning grooves 231 and / or second positioning portions 232 are distributed along the circumference of the first gasket member 23, the torsional strength of all circumferential portions of the cover plate 10 and the first gasket member 23 can also be improved.

[0061] Specifically, as Figure 2 and Figure 3 shown, in an embodiment of the present disclosure, four sets of first positioning portions 12 and / or second positioning grooves 13 are provided, and each set of first positioning portions 12 and / or second positioning grooves 13 is configured to be evenly distributed on the outer circumference of the mounting hole 11; four sets of first positioning grooves 231 and / or second positioning portions 232 are provided, and each of the first positioning grooves 231 and / or second positioning portions 232 is configured to be evenly distributed along the circumference of the first gasket member 23.

[0062] Since there are four sets of both the first positioning portion 12 and / or the second positioning groove 13, and the first positioning groove 231 and / or the second positioning portion 232, and each set of the first positioning portion 12 and / or the second positioning groove 13 is evenly distributed on the outer circumference of the mounting hole 11, and each of the first positioning grooves 231 and / or the second positioning portion 232 is configured to be evenly distributed along the circumference of the first gasket member 23, that is, the first positioning portion 12 and / or the second positioning groove 13, and the first positioning groove 231 and / or the second positioning portion 232 as a whole are in a cross-shaped distribution, which can effectively reduce the processing difficulty of the first positioning portion 12 and / or the second positioning groove 13, and the first positioning groove 231 and / or the second positioning portion 232.

[0063] As Figure 4 and Figure 5 shown, in an embodiment of the present disclosure, the conduction assembly 20 further includes a second gasket member 24, and the second gasket member 24 is clamped between the cover plate 10 and the inner connection portion 212. The second gasket member 24 is clamped between the cover plate 10 and the inner connection portion 212. When the second gasket member 24 is an insulating member, it can separate the cover plate 10 and the inner connection portion 212 to prevent electrical conduction between the pole column member 21 and the cover plate 10.

[0064] Specifically, as Figure 1 shown, in an embodiment of the present disclosure, there are two conduction assemblies 20, one of the conduction assemblies 20 is configured to be the positive conduction assembly 20, and the other conduction assembly 20 is configured to be the negative conduction assembly 20; the extension direction from one conduction assembly 20 to the other conduction assembly 20 is the conduction direction. That is, after the battery top cover of the present disclosure is applied to the battery, one of the conduction assemblies 20 serves as the positive conduction assembly 20, the inner connection portion 212 is electrically connected to the positive electrode portion of the core package, and the pressing plate 22 is electrically connected to the relevant structure for connecting the positive electrode to the outside. One of the conduction assemblies 20 serves as the negative conduction assembly 20, the inner connection portion 212 is electrically connected to the negative electrode portion of the core package, and the pressing plate 22 is electrically connected to the relevant structure for connecting the negative electrode to the outside.

[0065] As Figure 2 shown, in an embodiment of the present disclosure, the two side walls of the second gasket member 24 in the conduction direction are configured to be located on the outer sides of the two sides of the inner connection portion 212 in the conduction direction; flow channels 241 penetrating along the conduction direction are provided on both side walls of the second gasket member 24 in the conduction direction. Since the flow channels 241 penetrating along the conduction direction are provided on both side walls of the second gasket member 24 in the conduction direction, it is convenient for the substances in the electrolyte to move along the flow channels 241, thereby improving the working efficiency of the battery of the present disclosure and reducing the internal loss.

[0066] As Figure 2As shown, in one embodiment of the present disclosure, the conduction component 20 further includes a sealing ring 25; a setting hole is provided in the second gasket member 24. In the cross-section of the battery top cover, the sealing ring 25 is configured to be clamped between the cover plate 10 and the first gasket member 23, and the inner peripheral edge of the sealing ring 25 is configured to extend into the mounting hole 11. Since the sealing ring 25 is clamped between the cover plate 10 and the first gasket member 23, passes through the setting hole of the second gasket member 24, and the inner peripheral edge of the sealing ring 25 extends into the mounting hole 11, the cover plate 10 and the pole column body 211 can be effectively separated. When the sealing ring 25 is an insulating member, electrical conduction between the pole column member 21 and the cover plate 10 can be prevented.

[0067] As Figure 1 shown, in one embodiment of the present disclosure, the pressing plate 22 is in a rounded arc shape, and the extension dimension in any direction is greater than the set dimension. Since the pressing plate 22 is in a rounded arc shape and the extension dimension in any direction is greater than the set dimension, that is, after the battery top cover of the present disclosure is applied to the battery, it is convenient to weld the pressing plate 22 with other devices on the pressing plate 22 to reduce the welding difficulty of the above devices.

[0068] The present disclosure also provides a battery, which includes the aforementioned battery top cover. Compared with the existing batteries, the battery top cover in the battery of the present disclosure can effectively improve the assembly efficiency, and the first positioning groove 231 and the first positioning portion 12 on the cover plate 10 and the first gasket member 23 cooperate with each other, and are not easily misaligned during the assembly process, so that the production yield of the battery top cover of the present disclosure can be effectively improved, the production efficiency of the battery can be improved, and the production cost can be saved; in addition, since the first positioning portion 12 is provided on the cover plate 10 and the first positioning groove 231 is provided corresponding to the first gasket member 23, the torsional strength of the cover plate 10 can be effectively improved, and further the overall structural strength of the battery of the present disclosure can be improved.

[0069] The above has described the embodiments of the present disclosure. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A battery top cover, characterized in that: include: A cover plate (10), wherein the cover plate (10) is provided with a mounting hole (11) penetrating the cover plate in a thickness direction from the inside to the outside, and a first positioning portion (12) is provided on the outer side surface of the cover plate (10); A conduction component (20), the conduction component (20) comprising a pole piece (21), a pressure plate (22) and a first gasket piece (23); The pole piece (21) comprises a pole body (211) and an inner connecting portion (212); the pole body (211) is inserted into the mounting hole (11), the inner connecting portion (212) is fixedly arranged on the inner side of the pole body (211), and the inner connecting portion (212) is configured to have a cross section larger than that of the pole body (211); The pressing plate (22) is fixedly arranged on the outer side of the pole body (211); The first gasket (23) is arranged between the pressure plate (22) and the cover plate (10) to separate the cover plate (10) and the pressure plate (22); the first gasket (23) is provided with a first through hole that penetrates the thickness direction from the inside to the outside, and the pole body (211) penetrates the first through hole; the inner side surface of the first gasket (23) is provided with a first positioning groove (231), and the first positioning groove (231) is constructed to cooperate with the first positioning portion (12) so that the pressure plate (22) presses the first gasket (23) onto the cover plate (10).

2. The battery top cover according to claim 1, characterized in that: The first positioning portion (12) is a strip-shaped flange extending in a straight line; the first positioning groove (231) is a strip-shaped positioning groove matching the strip-shaped flange.

3. The battery top cover according to claim 1, characterized in that: A second positioning groove (13) is provided on the outer side surface of the cover plate (10); A second positioning portion (232) is provided on the inner side surface of the first gasket member (23), and the second positioning portion (232) is configured to cooperate with the second positioning groove (13) so that the pressing plate (22) presses the first gasket member (23) onto the cover plate (10).

4. The battery top cover according to claim 3, characterized in that: At least two of the first positioning portions (12) and / or the second positioning grooves (13) are provided, and each of the first positioning portions (12) and / or the second positioning grooves (13) is configured to be arranged on the circumferential outer side of the mounting hole (11); at least two of the first positioning grooves (231) and / or the second positioning portions (232) are provided, and each of the first positioning grooves (231) and / or the second positioning portions (232) is configured to be distributed along the circumference of the first gasket member (23).

5. The battery top cover according to claim 4, characterized in that: Four groups of the first positioning portions (12) and / or the second positioning grooves (13) are provided, and each group of the first positioning portions (12) and / or the second positioning grooves (13) is constructed to be evenly distributed on the circumferential outer side of the mounting hole (11); four groups of the first positioning grooves (231) and / or the second positioning portions (232) are provided, and each of the first positioning grooves (231) and / or the second positioning portions (232) is constructed to be evenly distributed along the circumference of the first gasket member (23).

6. The battery top cover according to any one of claims 1 to 5, characterized in that: The conduction component (20) further comprises a second gasket component (24), wherein the second gasket component (24) is sandwiched between the cover plate (10) and the inner connecting portion (212).

7. The battery top cover according to claim 6, characterized in that: Two conducting components (20) are provided, one of the conducting components (20) is configured as a positive conducting component (20), and the other conducting component (20) is configured as a negative conducting component (20); the extending direction from one conducting component (20) to the other conducting component (20) is the conducting direction; The two side walls of the second gasket member (24) in the conduction direction are constructed to be located on the outer sides of the inner connecting portion (212) in the conduction direction; and flow channels (241) penetrating along the conduction direction are provided on both side walls of the second gasket member (24) in the conduction direction.

8. The battery top cover according to claim 6, characterized in that: The conduction component (20) further comprises a sealing ring (25); The second gasket member (24) is provided with a setting hole, and in the cross section of the battery top cover, the sealing ring (25) is constructed so that the sealing ring (25) is sandwiched between the cover plate (10) and the first gasket member (23), and the inner peripheral edge of the sealing ring (25) is constructed so as to extend into the mounting hole (11).

9. The battery top cover according to any one of claims 1 to 5, characterized in that: The pressing plate (22) is in a rounded arc shape, and the extension dimension in any direction is greater than the set dimension.

10. A battery, characterized in that: Comprising a battery top cover according to any one of claims 1 to 9.

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