Battery cover plate and battery

Abstract

The utility model relates to a battery cover plate and a battery. The battery cover plate comprises a first metal plate, a second metal plate and an insulating plate, the first metal plate is provided with a first surface and a second surface which are arranged oppositely, a first through hole is formed in the first metal plate and penetrates through the first surface and the second surface, a mounting groove is formed in the side, where the first surface is located, of the first metal plate, and the first through hole is communicated with the mounting groove; the insulating plate is stacked on the bottom wall of the mounting groove; the second metal plate is stacked on the side, opposite to the first metal plate, of the insulating plate, part of the structure of the second metal plate is exposed out of the first through hole, the second metal plate is electrically insulated from the first metal plate through the insulating plate, the side wall of the second metal plate and the inner side wall of the mounting groove are spaced to form a glue overflowing opening, and the edge of the insulating plate corresponds to the glue overflowing opening. And the interval between the side wall of the second metal plate and the inner side wall of the mounting groove forms the glue overflowing opening, so that when the battery cover plate is heated and connected, the sol of the insulating part moves towards the glue overflowing opening and does not overflow.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cover and a battery. Background Art

[0002] Metal-cased batteries have become a mainstream battery type for portable electronic products due to their consistent dimensions, reliable appearance, safety, and high capacity. Metal-cased batteries are primarily enclosed by a metal cover and metal casing.

[0003] In the prior art, a battery's metal cover typically consists of two metal sheets with an insulating sheet placed between them. The insulating sheet is then heated to form a molten adhesive, integrating it with the two metal sheets. During the bonding process, adhesive overflows from the edges of the insulating sheet, making it difficult to control the edge dimensions of the metal cover. Utility Model Content

[0004] Based on this, it is necessary to provide a battery cover and a battery to address the problem of glue overflow easily occurring at the edge of the insulating sheet of the battery cover.

[0005] In one aspect, the present application provides a battery cover and a battery, comprising:

[0006] A first metal plate having a first surface and a second surface disposed opposite to each other, the first metal plate being provided with a first through hole extending through the first surface and the second surface, and a mounting groove being formed on a side of the first metal plate where the first surface is located, the first through hole being in communication with the mounting groove;

[0007] an insulating plate, stacked on the bottom wall of the mounting groove;

[0008] A second metal plate is stacked on the side of the insulating plate facing away from the first metal plate, and a portion of the structure of the second metal plate is exposed from the first through hole. The second metal plate is electrically insulated from the first metal plate via the insulating plate. The side wall of the second metal plate is spaced from the inner side wall of the mounting groove to form a glue overflow port, and the edge of the insulating plate corresponds to the glue overflow port.

[0009] In one embodiment, the first metal plate includes a first flat portion, a second flat portion and an annular connecting portion, the first flat portion is in the shape of a ring with an opening, the first flat portion and the second flat portion are staggered in the thickness direction of the first metal plate, and the second flat portion corresponds to the opening; the outer edge of the second flat portion is connected to the opening edge formed by the first flat portion through the annular connecting portion, and the second flat portion and the annular connecting portion enclose to form the mounting groove.

[0010] In one embodiment, the insulating plate is provided with a second through hole, and the second through hole corresponds to the first through hole.

[0011] Furthermore, the aperture of the second through hole is smaller than the aperture of the first through hole; the second metal plate includes a supporting portion and a conductive portion, the supporting portion is stacked on the insulating plate, and the conductive portion protrudes from the supporting portion and passes through the second through hole to be exposed from the first through hole.

[0012] Furthermore, the sidewall of the conductive portion is spaced apart from the sidewall of the first through hole, and the gaps at any positions around the conductive portion are equal.

[0013] On the other hand, the present application provides a battery, which includes a battery cover as described above, and the battery also includes a battery shell and a battery cell arranged in the battery shell, and the battery cover is arranged on the battery shell; the positive electrode of the battery cell is electrically connected to the first metal plate or the second metal plate, and the negative electrode of the battery cell is electrically connected to the second metal plate or the first metal plate.

[0014] In one embodiment, a mounting portion is provided on the outer edge of the first metal plate, a limiting notch is provided on the battery housing, and the mounting portion cooperates with the limiting notch.

[0015] In one embodiment, the battery further includes a first conductive sheet and a second conductive sheet, one end of the first conductive sheet is connected to the first metal plate, and one end of the second conductive sheet is connected to a position of the second metal plate corresponding to the first through hole.

[0016] Furthermore, the second conductive sheet includes a connecting section, a bending section and an extension section, the connecting section is connected to the portion of the second metal plate exposed from the first through hole; one end of the bending section is connected to the connecting section, the bending section extends along the axial direction of the first through hole to the plane where the second surface of the first metal plate is away from the battery shell, and the other end is connected to the extension section; the extension section extends along the radial direction of the first through hole toward the edge of the first metal plate.

[0017] Furthermore, an insulating structure is provided on the second surface, and the insulating structure is located between the extension section and the first metal plate.

[0018] In the battery cover and battery described above, a mounting groove is provided on the first surface of the first metal plate, and the insulating member and the second component are both installed in the mounting groove. The insulating plate is positioned between the first and second metal plates to electrically insulate the first and second metal plates. A first through-hole is provided on the first metal plate, extending through the first and second surfaces, and the second metal plate is exposed through the first through-hole, facilitating connection of the second metal plate to other components via the first through-hole. The gap between the sidewall of the second metal plate and the inner sidewall of the mounting groove forms a glue overflow opening. Thus, in the structure of the battery cover, the insulating plate is entirely located within the mounting groove. Even if glue overflow occurs, the glue will flow into the glue overflow opening and will not overflow from the edge of the battery cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a cross-sectional view of a battery cover plate according to an embodiment of a battery cover plate and a battery of the present invention, taken along a center thereof.

[0020] Figure 2 This is a structural schematic diagram of the first metal plate of an embodiment of a battery cover and a battery of the present application.

[0021] Figure 3 This is a visual diagram of the battery structure of an embodiment of the battery cover and battery of the present application.

[0022] Figure 4 This is a schematic diagram of the disassembled battery structure of an embodiment of the battery cover and battery of the present application.

[0023] Figure 5 A cross-sectional view of a battery according to an embodiment of a battery cover and a battery of the present application.

[0024] Figure 6 An embodiment of the battery cover and battery of this application Figure 4 A partial enlarged view of point A in the middle.

[0025] Figure 7 A cross-sectional view of a battery according to another embodiment of the battery cover and battery of the present application.

[0026] In the figure, 100, battery cover; 110, first metal plate; 111, mounting groove; 112, first flat plate portion; 113, second flat plate portion; 114, annular connecting portion; 115, first through hole; 116, mounting portion; 120, insulating plate; 121, second through hole; 130, second metal plate; 131, supporting portion; 132, conductive portion; 140, glue overflow port; 200, battery case; 201, limiting notch; 300, battery cell; 400, first conductive sheet; 500, second conductive sheet; 501, connecting section; 502, bending section; 503, extending section; 600, insulating structure. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if the terms "upper", "lower", "vertical", "horizontal", "axial", "radial", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0030] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] See Figure 1A battery cover 100 provided in one embodiment of the present application includes a first metal plate 110 , an insulating plate 120 and a second metal plate 130 .

[0033] The first metal plate 110 has a first surface and a second surface disposed opposite to each other. A first through-hole 115 is formed in the first metal plate 110, extending through the first and second surfaces. A mounting groove 111 is formed on one side of the first metal plate 110 where the first surface resides, and the first through-hole 115 communicates with the mounting groove 111.

[0034] The insulating plate 120 is stacked on the bottom wall of the mounting groove 111. The second metal plate 130 is stacked on the side of the insulating plate 120 facing away from the first metal plate 110, with a portion of the second metal plate 130 exposed through the first through-hole 115. The second metal plate 130 is electrically insulated from the first metal plate 110 by the insulating plate 120. The sidewall of the second metal plate 130 and the inner sidewall of the mounting groove 111 form a glue overflow port 140, and the edge of the insulating plate 120 corresponds to the glue overflow port 140.

[0035] It should be noted that the first metal plate 110, the second metal plate 130, and the insulating plate 120 are selected based on the overall shape of the battery. For example, these plates can be rectangular or circular. Under high temperature conditions, molten adhesive is generated on the surface of the insulating plate 120. After the molten adhesive cools, the insulating plate 120 can be bonded to the first metal plate 110 and the second metal plate 130 to form a whole. Because the insulating plate 120 is tightly connected to the first metal plate 110 and the second metal plate 130, some molten adhesive can overflow from the edge of the insulating plate 120 at high temperatures. Due to the above-mentioned arrangement, by positioning the edge of the insulating plate 120 at the location of the glue overflow port 140, the molten adhesive overflowing from the edge of the insulating plate 120 flows into the glue overflow port 140. Based on this, the amount of glue overflow can be calculated based on the heating temperature and the material properties of the glue, and the size of the glue overflow port 140 can be adjusted to ensure that the glue overflow is fully accommodated. This prevents the glue from flowing to other locations of the battery cover 100 and cooling and forming, thereby preventing the battery cover 100 from being mismatched with other battery components.

[0036] In the battery cover 100 of the present embodiment, the first metal plate 110 and the second metal plate 130 are respectively used to electrically connect to the two electrodes of the battery. Because the first metal plate 110 is provided with a first through-hole 115, and the first through-hole 115 is connected to the mounting groove 111, when part of the second metal plate 130 is exposed through the first through-hole 115, the second metal plate 130 can be exposed through the first through-hole 115 to lead out the electrodes, facilitating installation and use of the battery cover 100.

[0037] Combine Figure 2As shown, in some embodiments, the first metal plate 110 includes a first flat portion 112, a second flat portion 113, and an annular connecting portion 114. The first flat portion 112 is annular with an opening. The first flat portion 112 and the second flat portion 113 are staggered in the thickness direction of the first metal plate 110, with the second flat portion 113 corresponding to the opening. The outer edge of the second flat portion 113 is connected to the edge of the opening of the first flat portion 112 via the annular connecting portion 114. The second flat portion 113 and the annular connecting portion 114 enclose a mounting groove 111.

[0038] By arranging the first flat plate portion 112 and the second flat plate portion 113 in parallel, with the opening located in the middle of the first flat plate portion 112, and the opening of the second flat plate portion 113 corresponding to the first flat plate portion 112 being located on one side of the first flat plate portion 112, the annular connecting portion 114 and the second flat plate portion 114 enclose a mounting groove 111 for accommodating the insulating plate 120 and the second metal plate 130. The insulating plate 120 is stacked on the side of the second flat plate portion 113 facing the first flat plate portion 112. As a result, the first and second surfaces of the first metal plate 110 are both stepped; the first metal plate 110 can be obtained by stamping a flat metal plate, which can improve the structural strength of the first metal plate 110 and prevent deformation.

[0039] Preferably, the insulating plate 120 defines a second through hole 121 , and the second through hole 121 corresponds to the first through hole 115 .

[0040] In some embodiments, the second through hole 121 is opened in the middle of the insulating plate 120, and the second through hole 121 is arranged corresponding to the first through hole 115, so that the second metal plate 130 can be exposed in the middle of the first through hole 115 and the second through hole 121. The second metal plate 130 can easily lead out the electrode through the first through hole 115 and the second through hole 121 or connect with other components, which facilitates the installation and use of the battery cover 100.

[0041] Preferably, the aperture of the second through hole 121 is smaller than the aperture of the first through hole 115; the second metal plate 130 includes a supporting portion 131 and a conductive portion 132, the supporting portion 131 is stacked on the insulating plate 120, and the conductive portion 132 protrudes from the supporting portion 131 and passes through the second through hole 121 to be exposed in the first through hole 115.

[0042] In some embodiments, the support portion 131 is stacked on the insulating plate 120, and the conductive portion 132 is disposed on the side of the support portion 131 facing the insulating plate 120. The shape of the conductive portion 132 corresponds to the second through-hole 121. That is, when the second through-hole 121 is a circular hole, the conductive portion 132 is a cylindrical structure, allowing the conductive portion 132 to pass through the second through-hole 121. The surface of the conductive portion 132 is visible on the second surface of the first metal plate 110, that is, the conductive portion 132 is exposed in the first through-hole 115. In the aforementioned embodiment, the portion of the second metal plate 130 exposed in the first through-hole 115 is the conductive portion 132, and the electrodes of the second metal plate 130 are extracted through the conductive portion 132. In addition, the inner sidewalls of the second through-hole 121 abut against the sidewalls of the conductive portion 132, which can limit the position of the second metal plate 130, prevent it from shifting during operation, and facilitate installation of the second metal plate 130.

[0043] Furthermore, the sidewall of the conductive portion 132 is spaced apart from the sidewall of the first through hole 115 , and the gaps between the sidewalls of the first through hole 115 at any positions around the conductive portion 132 are equal.

[0044] In some embodiments, the conductive portion 132 may extend to the middle of the first through hole 115. At this time, the conductive portion 132 does not contact the side wall of the first through hole 115, ensuring electrical insulation between the first metal plate 110 and the second metal plate 130; the conductive portion 132 is limited by the second through hole 121, so that the shortest distance from the conductive portion 132 to the side wall of the first through hole 115 is equal, making the structure more stable. When the conductive portion 132 is displaced by force, it is not easy to contact the side wall of the first through hole 115 and cause an electrode short circuit.

[0045] In addition, the end surface of the conductive portion 132 does not exceed the plane of the second surface, ensuring that the conductive portion 132 is located in the first through hole 115 and the second through hole 121, thereby preventing the second metal sheet 130 from being exposed and increasing the risk of short circuit, thereby improving safety in use.

[0046] Combine Figure 3 and Figure 4 As shown, based on the battery cover 100 of any of the above embodiments, the present application also provides a battery. In addition to the battery cover 100 as described above, the battery also includes a battery housing 200 and a battery cell 300 disposed in the battery housing 200. The battery cover 100 is covered on the battery housing 200; the positive electrode of the battery cell 300 is electrically connected to the first metal plate 110 or the second metal plate 130, and the negative electrode of the battery cell 300 is electrically connected to the second metal plate 130 or the first metal plate 110.

[0047] In some embodiments, a mounting opening is provided on one side of the battery housing 200, and the aforementioned battery cover 100 is mounted on the mounting opening of the battery housing 200. The battery cover 100 and the battery housing 200 together form a closed battery compartment, and the battery cell 300 is disposed within the enclosed battery compartment to form a closed and reliable battery structure. Since the first metal plate 110 and the second metal plate 130 are electrically connected to the positive and negative electrodes of the battery cell 300, respectively, the first metal plate 110 and the second metal plate 130 can serve as the positive and negative electrodes of the battery for external connection to achieve current transmission; similarly, the positive electrode of the battery cell 300 can also be electrically connected to the second metal plate 130, and the negative electrode of the battery cell 300 can be electrically connected to the first metal plate 110. It is only necessary to lead out the electrodes for connection to external electrical appliances, thereby facilitating the use of the battery.

[0048] Combine Figure 5 and Figure 6 As shown, preferably, a mounting portion 116 is provided on the outer edge of the first metal plate 110 , and a limiting notch 201 is provided on the battery housing 200 , and the mounting portion 116 matches the limiting notch 201 .

[0049] In some embodiments, the mounting portion 116 is provided along the outer edge of the first metal plate 110, and the limiting notch 201 is provided along the mounting opening of the battery housing 200. The limiting notch 201 is provided as a stepped structure, and the mounting portion 116 is installed in conjunction with the limiting notch 201 so that the battery cover 100 can be covered on the battery housing 200. When assembling the battery, the limiting notch 201 and the mounting portion 116 are fixedly connected by welding or the like, so that the battery cover 100 and the battery housing 200 are enclosed and sealed. The limiting notch 201 can also be provided as a limiting groove structure, so that the mounting portion 116 can be installed and limited in conjunction with each other to ensure the installation stability of the overall battery structure.

[0050] Preferably, the battery further includes a first conductive sheet 400 and a second conductive sheet 500 , one end of the first conductive sheet 400 is connected to the first metal plate 110 , and one end of the second conductive sheet 500 is connected to the position of the second metal plate 130 corresponding to the first through hole.

[0051] like Figure 5 and Figure 6 As shown, in some embodiments, one end of the first conductive sheet 400 is connected to the second surface of the first metal plate 110, and the other end is led out to serve as an electrode of the battery; similarly, one end of the second conductive sheet 400 is connected to the conductive portion 132 of the second metal plate 130, and the other end is led out to serve as another electrode of the battery. The other ends of the first conductive sheet 400 and the second conductive sheet 500 are used to connect to external electrical appliances to facilitate the connection and use of the battery.

[0052] like Figure 7As shown, in other embodiments, due to the different installation directions of the battery cover 100, one end of the first conductive sheet 400 is connected to the first surface of the first metal plate 110; one end of the second conductive sheet 500 is connected to the support portion 131 of the second metal plate 130. At this time, the conductive portion of the second metal plate 130 is used to connect to the electrode of the battery cell 300.

[0053] Furthermore, the second conductive sheet 500 includes a connecting section 501, a bent section 502, and an extension section 503. The connecting section 501 is connected to the portion of the conductive portion 132 exposed outside the first through-hole. One end of the bent section 502 is connected to the connecting section 501. The bent section 502 extends axially along the first through-hole 115 to a plane on the second surface of the first metal plate 110 away from the battery housing 200. The other end is connected to the extension section 503. The extension section 503 extends radially along the first through-hole 115 toward the edge of the first metal plate 110.

[0054] like Figure 5 and Figure 6 As shown, in some embodiments, the connecting section 501 is horizontally stacked in the middle of the end surface of the conductive portion 132. The bending section 502 is vertically arranged and extends along the axial direction of the first through hole 115 to the outside of the first through hole 115. The extension section 503 extends horizontally toward the edge of the first metal plate 110 and exceeds the edge of the first metal plate 110 by a certain distance, so as to facilitate the connection of the second conductive sheet 500 with the external electrical appliance. The first conductive sheet 400 is horizontally arranged and arranged in the same direction as the second conductive sheet 500. By overlapping the first conductive sheet 400 and the second conductive sheet 500 with the battery cover 100, the space occupied by the first conductive sheet 400 and the second conductive sheet 500 can be reduced, and the battery connection is facilitated.

[0055] Furthermore, an insulating structure 600 is provided on the second surface, and the insulating structure 600 is located between the extending section 503 and the first metal plate 110 .

[0056] In some embodiments, the insulating structure 600 is made of an insulating coating or insulating tape, and the insulating structure 600 is disposed on the upper surface of the second flat portion 113. Since the extension portion 503 of the second conductive sheet 500 extends along the upper surface of the second flat portion 113, when the second conductive sheet 500 is forced to deflect toward the first metal plate 110, the second conductive sheet 500 will eventually abut against the insulating structure 600, ensuring that the second conductive sheet 500 and the first metal plate 110 remain electrically insulated, thereby improving the safety of the battery.

[0057] In addition, refer to Figure 7 In other embodiments, an insulating material may be laid on the upper surface of the second metal plate 130 to improve safety of use; further, a third through hole for the second conductive sheet 500 to pass through may be opened in the middle of the insulating material to facilitate the extraction of the second conductive sheet 500.

[0058] The specific implementation process of the present application is as follows: the insulating plate 120 is stacked on the bottom wall of the mounting groove 111 of the first metal plate 110, and the second metal plate 130 is stacked on the insulating plate 120, and the first metal plate 110 and the second metal plate 130 are not in contact to achieve electrical insulation; a glue overflow port 140 is formed between the side wall of the second metal plate 130 and the inner wall of the mounting groove 111, and the outer edge of the insulating plate 120 is located at the glue overflow port 140, so that the molten glue generated by the insulating plate 120 at high temperature can directly enter the glue overflow port 140 to avoid glue overflow, thereby ensuring that the connection between the battery cover 100 and the battery shell 200 is intact and not affected by glue overflow, thereby improving the closing efficiency and connection quality of the battery cover 100 and the battery shell 200 when they are compounded.

[0059] A first through hole 115 communicating with the mounting groove 111 is defined on the first metal plate 110, and a second through hole 121 corresponding to the first through hole 115 is defined on the insulating plate 120, so that the second metal plate 130 is exposed in the first through hole 115; the conductive portion 132 of the second metal plate 130 is passed through the second through hole 121, and the inner side wall of the second through hole 121 abuts against the side wall of the conductive portion 132, limiting the position of the second metal plate 130, facilitating the installation of the second metal plate 130, and preventing the conductive portion 132 from deviating and contacting the inner side wall of the first through hole 115, causing a short circuit; the end surface of the conductive portion 132 is connected to the second conductive sheet 500, which passes through the first through hole 115 and leads to the positive and negative poles of the battery respectively with the first conductive sheet 400.

[0060] The beneficial technical effects that can be achieved through the above-mentioned embodiment include: by setting the glue overflow port 140 at the edge of the insulating plate 120, the insulating plate 120 can be prevented from overflowing glue during high-temperature processing, thereby improving the quality and efficiency of battery cover closing; the first metal plate 110 is manufactured through sheet metal processing to enhance the structure and make the battery less likely to deform; and through the insulating plate 120, the glue overflow port 140, the second through hole 121 and the insulating structure 600, the first metal plate 110 and the second metal plate 130 are electrically insulated, thereby improving the safety of the battery.

[0061] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery cover (100), characterized in that: include: A first metal plate (110) has a first surface and a second surface disposed opposite to each other, the first metal plate (110) is provided with a first through hole (115), the first through hole (115) passes through the first surface and the second surface, the first metal plate (110) is formed with a mounting groove (111) on one side where the first surface is located, the first through hole (115) is in communication with the mounting groove (111); an insulating plate (120) stacked on the bottom wall of the mounting groove (111); A second metal plate (130) is stacked on the side of the insulating plate (120) facing away from the first metal plate (110), and a portion of the structure of the second metal plate (130) is exposed in the first through hole (115). The second metal plate (130) is electrically insulated from the first metal plate (110) via the insulating plate (120). A side wall of the second metal plate (130) is spaced apart from an inner side wall of the mounting groove (111) to form a glue overflow port (140), and an edge of the insulating plate (120) corresponds to the glue overflow port (140).

2. The battery cover (100) according to claim 1, characterized in that: The first metal plate (110) includes a first flat portion (112), a second flat portion (113) and an annular connecting portion (114), wherein the first flat portion (112) is in the shape of a ring with an opening, the first flat portion (112) and the second flat portion (113) are staggered in the thickness direction of the first metal plate (110), and the second flat portion (113) corresponds to the opening; the outer edge of the second flat portion (113) is connected to the edge of the opening formed by the first flat portion (112) through the annular connecting portion (114), and the second flat portion (113) and the annular connecting portion (114) enclose the mounting groove (111).

3. The battery cover (100) according to claim 1, characterized in that: The insulating plate (120) is provided with a second through hole (121), and the second through hole (121) corresponds to the first through hole (115).

4. The battery cover (100) according to claim 3, characterized in that: The aperture of the second through hole (121) is smaller than the aperture of the first through hole (115); the second metal plate (130) comprises a supporting portion (131) and a conductive portion (132), the supporting portion (131) being stacked on the insulating plate (120), and the conductive portion (132) protruding from the supporting portion (131) and penetrating the second through hole (121) to be exposed in the first through hole (115).

5. The battery cover (100) according to claim 4, characterized in that: The side wall of the conductive portion (132) is spaced apart from the side wall of the first through hole (115), and the gaps at any positions around the conductive portion (132) are equal.

6. A battery, characterized in that: The battery comprises a battery cover (100) as claimed in any one of claims 1 to 5, wherein the battery further comprises a battery housing (200) and a battery cell (300) disposed in the battery housing (200), wherein the battery cover (100) is disposed on the battery housing (200); the positive electrode of the battery cell (300) is electrically connected to the first metal plate (110) or the second metal plate (130), and the negative electrode of the battery cell (300) is electrically connected to the second metal plate (130) or the first metal plate (110).

7. The battery according to claim 6, characterized in that The outer edge of the first metal plate (110) is provided with a mounting portion (116), the battery housing (200) is provided with a limiting notch (201), and the mounting portion (116) cooperates with the limiting notch (201).

8. The battery according to claim 6, characterized in that It also includes a first conductive sheet (400) and a second conductive sheet (500), wherein one end of the first conductive sheet (400) is connected to the first metal plate (110), and one end of the second conductive sheet (500) is connected to a position of the second metal plate (130) corresponding to the first through hole (115).

9. The battery according to claim 8, characterized in that The second conductive sheet (500) includes a connecting section (501), a bending section (502) and an extension section (503), wherein the connecting section (501) is connected to the portion of the second metal plate (130) exposed from the first through hole (115); one end of the bending section (502) is connected to the connecting section (501), and the bending section (502) extends along the axial direction of the first through hole (115) to the plane where the second surface of the first metal plate (110) away from the battery housing (200) is located, and the other end is connected to the extension section (503); the extension section (503) extends along the radial direction of the first through hole (115) toward the edge of the first metal plate (110).

10. The battery according to claim 9, characterized in that An insulating structure (600) is provided on the second surface, and the insulating structure (600) is located between the extension section (503) and the first metal plate (110).

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