Battery cover plate and battery

Abstract

The utility model relates to the technical field of batteries, and discloses a battery cover plate and a battery, and the battery cover plate comprises a top cover sheet, a pole, a power connection block and a first sealing ring. The top cover plate is provided with a through hole, the first end of the pole is connected with the electrode assembly, and the second end extends into the through hole. The power connection block is connected with the second end of the pole, one face of the first sealing ring abuts against the power connection block, the other face of the first sealing ring abuts against the top cover piece and is provided with an annular groove, the face, abutting against the first sealing ring, of the top cover piece is provided with an annular protrusion, and the annular protrusion is inserted into the annular groove and matched with the annular groove. According to the battery cover plate disclosed by the invention, after the pole penetrates through the through hole and is connected with the power connection block, the power connection block is propped against the second surface of the first sealing ring, so that the first surface of the first sealing ring is tightly attached to the first surface of the battery cover plate, and the inner wall surface of the annular groove is attached to the outer wall surface of the annular bulge, so that the sealing effect is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery cover plate and a battery. BACKGROUND

[0002] The battery cover plate is an important component of the battery, which is used to cover the battery shell. Its role is to seal the electrolyte, electrode assembly and other substances inside the battery shell, and to provide support and connection for the pole and other components. The existing battery cover plate usually includes a top cover sheet and a pole, the first end of the pole is connected with the electrode assembly on the battery cell, the second end of the pole passes through the through hole provided on the top cover sheet and is welded with the metal block (upper pole) for connecting electricity, and the sealing element is arranged between the metal block for connecting electricity and the top cover sheet.

[0003] The common sealing element is a common sealing washer, the bottom surface of the sealing washer abuts against the top surface of the top cover sheet, and the top surface of the sealing washer abuts against the bottom surface of the metal block for connecting electricity. The sealing washer and the top cover sheet can only be sealed in a single-sided manner, and the sealing effect is poor.

[0004] Therefore, how to solve or improve the problem of poor sealing effect between the top cover sheet and the sealing washer of the battery cover plate in the related art has become an important technical problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENT

[0005] Therefore, the present application provides a battery cover plate and a battery to solve or improve the problem of poor sealing effect between the top cover sheet and the sealing washer of the battery cover plate.

[0006] In a first aspect, the present application provides a battery cover plate comprising:

[0007] a top cover sheet provided with a through hole;

[0008] a pole, a first end of which is used to connect with an electrode assembly, and a second end of which extends into the through hole;

[0009] a metal block for connecting electricity connected with the second end of the pole;

[0010] a first sealing ring, one surface of which abuts against the metal block for connecting electricity, and the other surface of which abuts against the top cover sheet and is provided with an annular groove, and the top cover sheet is provided with an annular protrusion on the surface abutting against the first sealing ring, the annular protrusion is inserted into the annular groove and matches the annular groove.

[0011] Optionally, a first annular strip is provided on the first sealing ring, the first annular strip is inserted into the through hole and abuts against the inner wall of the through hole.

[0012] Optionally, an extension is provided on the sidewall of the first end of the pole, and the side of the first annular strip away from the metal block for connecting electricity abuts against the extension.

[0013] Optionally, an inner wall of the annular groove is provided with a first inclined surface, and an outer wall of the annular protrusion is provided with a second inclined surface matching the first inclined surface.

[0014] Optionally, the battery cover plate further comprises:

[0015] The insulating member is provided with a groove in a top surface, at least part of the current collecting block is inserted into the groove, a first through hole is formed in a groove bottom of the groove, a bottom surface of the insulating member is connected to a top surface of the top cover sheet, the first through hole is coaxial with the through hole, and a portion of the groove bottom close to the first through hole forms the annular protrusion.

[0016] Optionally, the battery cover plate further comprises:

[0017] The insulating plate is provided with a second through hole, a top surface of the insulating plate is connected to a bottom surface of the top cover sheet, and the second through hole is coaxial with the through hole.

[0018] The second sealing ring is in abutment with the bottom surface of the top cover sheet, the extension portion, and the second through hole, respectively.

[0019] Optionally, a third inclined surface is formed on a side wall of the second through hole, and a fourth inclined surface matching the third inclined surface is formed on a side wall of the second sealing ring.

[0020] Optionally, a second annular strip is formed on the second sealing ring, the second annular strip is inserted into the through hole, and an inner wall of the through hole is in abutment with the second annular strip.

[0021] Optionally, a side of the second annular strip away from the extension portion is in abutment with the current collecting block.

[0022] In a second aspect, the application further provides a battery comprising any of the battery cover plates described above.

[0023] The application further provides a battery cover plate comprising a top cover sheet, a pole, a current collecting block, and a first sealing ring. A through hole is formed in the top cover sheet. An annular groove is formed in the first sealing ring. An annular protrusion is formed on a top surface of the top cover sheet. The annular protrusion has a shape consistent with that of the annular groove, so that the annular protrusion matches the annular groove. A first end of the pole is configured to be connected to a busbar of an electrode assembly, and a second end of the pole passes through the through hole and is connected to the current collecting block.

[0024] In this way, the top cover sheet is connected to the current collecting block through the first sealing ring, two surfaces of the first sealing ring are in abutment with the top cover sheet and the current collecting block, respectively, and because the annular protrusion matches the annular groove, an inner wall surface of the annular groove is in abutment with an outer wall surface of the annular protrusion, so that the sealing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments or the related art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0026] Figure 1 It is a first perspective exploded view of a battery cover plate of an embodiment of the present application.

[0027] Figure 2 It is a second perspective exploded view of a battery cover plate of an embodiment of the present application.

[0028] Figure 3 It is a first perspective structural schematic view of a battery cover plate of an embodiment of the present application.

[0029] Figure 4 It is an enlarged view of A of Figure 3

[0030] Figure 5 It is a second perspective structural schematic view of a battery cover plate of an embodiment of the present application.

[0031] Figure 6 It is an enlarged view of B of Figure 5

[0032] Figure 7 It is a first sealing ring structural schematic view of a battery cover plate of an embodiment of the present application.

[0033] Figure 8 It is a cross-sectional view of a first sealing ring of a battery cover plate of an embodiment of the present application.

[0034] Figure 9 It is a second sealing ring structural schematic view of a battery cover plate of an embodiment of the present application.

[0035] Figure 10 It is a cross-sectional view of a second sealing ring of a battery cover plate of an embodiment of the present application.

[0036] Figure 11 It is a partial schematic view of a cross-sectional view of a battery cover plate of an embodiment of the present application.

[0037] Figure 12 It is an enlarged view of C of Figure 11

[0038] Figure 13 It is a partial schematic view of a cross-sectional view of another battery cover plate of an embodiment of the present application.

[0039] Figure 14 ​​​Fig. 1 is a perspective view of a battery cover plate according to an embodiment of the present application; Figure 13 Fig. 9 is an enlarged view of D of Fig. 8;

[0040] Figure 15 Fig. 10 is a partial schematic view of a cross-sectional view of another battery cover plate according to an embodiment of the present application;

[0041] Figure 16 Fig. 11 is a perspective view of a battery cover plate according to another embodiment of the present application; Figure 15 Fig. 12 is an enlarged view of E of Fig. 11.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1, contact block; 2, first sealing ring; 21, annular groove; 211, first inclined surface; 22, first annular strip; 3, top cover piece; 31, through hole; 32, annular protrusion; 321, second inclined surface; 4, second sealing ring; 41, fourth inclined surface; 42, second annular strip; 5, rupture disc protection patch; 6, rupture disc; 7, pole; 71, extension; 8, insulating piece; 81, groove; 82, first through hole; 9, insulating plate; 91, second through hole; 911, third inclined surface. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0045] In the present application, unless specifically defined and limited otherwise, a first feature is "on", "above", or "under", or "below" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature "below", "under", and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0046] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0048] In the description of the application, it should be understood that 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 indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0049] The embodiments of the application will be described below in conjunction with Figures 1 to 16 .

[0050] According to the embodiments of the application, in one aspect, a battery cover plate is provided, as shown in Figure 1 and Figure 2 , comprising a top cover sheet 3, a pole 7, an electrical connection block 1 and a first sealing ring 2. The top cover sheet 3 has opposite top and bottom surfaces, and a through hole 31 is formed through the top and bottom surfaces. The electrical connection block 1 can be an aluminum block or other conductive block.

[0051] The first sealing ring 2 is annular and has opposite first and second surfaces. An annular groove 21 is formed on the first surface of the first sealing ring 2, and an annular protrusion 32 is provided on the top surface of the top cover sheet 3. The shape of the annular protrusion 32 is consistent with the shape of the annular groove 21, so that the annular protrusion 32 matches the annular groove 21.

[0052] In the process of assembling the battery cover plate, the first sealing ring 2 is coaxial with the through hole 31, and the first surface of the first sealing ring 2 is attached to the top surface of the top cover sheet 3, so that the annular protrusion 32 is inserted into the annular groove 21. Due to the matching of the annular protrusion 32 and the annular groove 21, the outer wall of the annular protrusion 32 is attached to the inner wall of the annular groove 21.

[0053] The pole 7 has a first end and a second end. The first end of the pole 7 is connected to the electrode assembly in the battery shell, and then the second end of the pole 7 is inserted into the through hole 31 from the bottom surface of the top cover sheet 3. The current collecting block 1 is attached to the second surface of the first sealing ring 2, and the current collecting block 1 is welded to the part of the pole 7 inserted into the through hole 31, so that the two surfaces of the first sealing ring 2 are tightly attached to the top cover sheet 3 and the current collecting block 1 respectively, and the inner wall surface of the annular groove 21 is tightly attached to the outer wall surface of the annular protrusion 32, and the sealing effect is better.

[0054] Moreover, there may be a creeping phenomenon between the first sealing ring 2 and the top cover sheet 3, which refers to the phenomenon that the current flows along an irregular path on the surface of the insulating material. If only the first surface of the first sealing ring 2 is attached to the top surface of the top cover sheet 3 for sealing, the creeping distance when the creeping phenomenon occurs between the first sealing ring 2 and the top cover sheet 3 is the shortest line segment on the attached surface between the first surface of the first sealing ring 2 and the top surface of the top cover sheet 3.

[0055] In the case where the annular groove 21 is provided on the first surface of the first sealing ring 2 and the annular protrusion 32 is provided on the top surface of the top cover sheet 3, the inner wall of the annular groove 21 is attached to the outer wall of the annular protrusion 32. At this time, the creeping distance is further increased by the shortest line segment on the attached surface between the inner wall of the annular groove 21 and the outer wall of the annular protrusion 32. Thus, the creeping distance is increased, the possibility of the occurrence of the creeping phenomenon is reduced, and the insulation performance of the battery cover plate is enhanced.

[0056] As an optional embodiment, as shown in Figure 7 and Figure 8 a first annular strip 22 is vertically provided on the first surface of the first sealing ring 2, and the inner circle of the first annular strip 22 is aligned with the inner circle of the first sealing ring 2. The first annular strip 22 is integrally provided with the first sealing ring 2 and is made of the same material.

[0057] In this way, when the first surface of the first sealing ring 2 is attached to the top surface of the top cover sheet 3, as shown in Figure 11 and Figure 12 the first annular strip 22 is inserted into the through hole 31, and the first annular strip 22 is tightly attached to the inner wall of the through hole 31, thereby playing an additional sealing role. Thus, the sealing property between the first sealing ring 2 and the top cover sheet 3 is further enhanced.

[0058] As an optional embodiment, the second end of the pole 7 is inserted into the first annular strip 22 from the bottom surface of the top cover sheet 3.

[0059] Furthermore, when the creeping phenomenon occurs between the first sealing ring 2 and the top cover sheet 3 after the first annular strip 22 is attached to the inner wall surface of the through hole 31, the shortest line segment on the attached surface between the first annular strip 22 and the inner wall surface of the through hole 31 is increased. Thus, the creeping distance is increased, the possibility of the creeping phenomenon is reduced, and the insulation performance of the battery cover plate is enhanced.

[0060] In a further embodiment, as shown in Figure 15 and Figure 16 , an extension 71 is arranged on the side wall of the first end of the pole 7. The side of the first annular strip 22 away from the contact block abuts against the extension 71. That is, the part of the first annular strip 22 extending into the through hole 31 abuts against the extension 71. Thus, the first annular strip 22 plays a sealing role between the contact block 1 and the extension 71, further enhancing the sealing performance of the battery cover plate.

[0061] The extension 71 can be a ring-shaped baffle.

[0062] In an optional embodiment, as shown in Figure 3 and Figure 4 , a first inclined surface 211 is arranged on the inner wall of the annular groove 21. Correspondingly, a second inclined surface 321 is arranged on the outer peripheral wall of the annular protrusion 32. As shown in Figure 11 and Figure 12 , after the first surface of the first sealing ring 2 is attached and abuts tightly against the top surface of the top cover sheet 3, the annular protrusion 32 is inserted into the annular groove 21, and at this time, the first inclined surface 211 and the second inclined surface 321 are matched and abut tightly.

[0063] In this way, in the direction in which the contact block 1 presses the first sealing ring 2, the attachment area between the first sealing ring 2 and the annular protrusion 32 is larger, and thus the sealing performance is better.

[0064] As an optional embodiment, as shown in Figure 3 and Figure 4 , the battery cover plate further comprises an insulating piece 8, and a recess 81 is arranged on the top surface of the insulating piece 8. A first through hole 82 is arranged on the groove bottom of the recess 81. After the bottom surface of the insulating piece 8 is attached and connected to the top surface of the top cover sheet 3, the first through hole 82 is coaxial with the through hole 31, and the hole diameter of the first through hole 82 is larger than that of the through hole 31. At this time, the part of the groove bottom of the recess 81 close to the first through hole cooperates with the first through hole 82 to form the annular protrusion 32 arranged on the top cover sheet 3.

[0065] Specifically, the insulating piece 8 comprises a bottom wall and a side wall located on the side of the bottom wall, and the bottom wall and the side wall enclose the recess 81. A through hole is arranged on the bottom wall, so as to form the first through hole 82 on the groove bottom of the recess 81. At this time, the part of the bottom wall close to the first through hole 82 can form the annular protrusion 32.

[0066] The electrical contact block 1 is partially or wholly inserted into the groove 81, the pole 7 extends into the through hole 31, and is welded with the electrical contact block, so that the insulating member 8 plays an insulating role between the electrical contact block 1 and the top cover sheet 3.

[0067] The insulating member 8 can be a concave shell made of plastic.

[0068] In some embodiments, the top surface of the top cover sheet 3 is provided with a mounting groove, and the insulating member 8 is arranged in the mounting groove, so that the installation is more convenient, and the fixing effect of the insulating member 8 is better.

[0069] As an optional embodiment, as shown in Figure 5 and Figure 6 , the battery cover plate further comprises an insulating plate 9 and a second sealing ring 4. The insulating plate 9 has a top surface and a bottom surface, and the insulating plate 9 is provided with a second through hole 91. The top surface of the insulating plate 9 is connected with the bottom surface of the top cover sheet 3 in a fit manner, so that the second through hole 91 is coaxial with the through hole 31, and the pole 7 can extend into the through hole 31 through the second through hole 91.

[0070] The diameter of the second through hole 91 is larger than that of the through hole 31, and after the top surface of the insulating plate 9 is fit with the bottom surface of the top cover sheet 3, the second through hole 91 cooperates with the through hole 31 in the bottom surface of the top cover sheet 3 to form an annular sealing groove 92.

[0071] As shown in the side wall of the first end of the pole 7 is provided with an extension 71, the second sealing ring 4 is arranged in the annular sealing groove 92, so that the top surface of the second sealing ring 4 abuts against the bottom surface of the top cover sheet 3, and the outer peripheral wall of the second sealing ring 4 abuts against the side wall of the second through hole 91. Then the pole 7 is welded with the electrical contact block 1 after extending through the through hole 31, at this time the bottom surface of the second sealing ring 4 abuts against the extension 71, so that the second sealing ring 4 plays a sealing role between the extension 71 and the top cover sheet 3.

[0072] The insulating plate 9 can be made of plastic and play an insulating role. The extension 71 can be an annular baffle.

[0073] In an optional embodiment, as shown in Figure 9 and Figure 10 , the inner wall of the second through hole 91 is provided with a third inclined surface 911, and correspondingly, the outer peripheral wall of the second sealing ring 4 is provided with a fourth inclined surface 41. When the second sealing ring 4 is arranged in the annular sealing groove 92, the third inclined surface 911 and the fourth inclined surface 41 are matched and abutted tightly.

[0074] In this way, the abutting area between the second sealing ring 4 and the inner wall of the annular sealing groove 92 in the direction in which the extension 71 of the pole 7 presses the second sealing ring 4 is larger, so that the sealing performance is better.

[0075] In an optional embodiment, as shown in Figure 9 andFigure 10 As shown, a second annular strip 42 is provided on the second sealing ring 4. The second annular strip 42 is vertically connected to the top surface of the second sealing ring 4, and the inner ring of the second annular strip 42 is aligned with the inner ring of the second sealing ring 4. The second sealing ring 4 and the second annular strip 42 are integrally formed and made of the same material.

[0076] Thus, after the second sealing ring 4 is installed into the annular sealing groove 92, as... Figure 13 and Figure 14 As shown, the second annular strip 42 is inserted into the perforation 31, and the second annular strip 42 fits tightly against the inner wall of the perforation 31, providing an additional sealing effect. This further enhances the sealing performance between the first sealing ring 2 and the top cover plate 3.

[0077] Specifically, the pole post 7 can be inserted into the inner ring of the second sealing ring 4.

[0078] In some embodiments, after the second sealing ring 4 is inserted into the annular sealing groove 92, the second annular strip 42 is inserted into the through hole 31, and its side facing away from the extension 71 on the terminal post 7 abuts against the contact block 1. Thus, the second annular strip 42 plays a sealing role between the contact block 1 and the extension 71, further increasing the sealing performance of the battery cover.

[0079] As an optional implementation method, such as Figure 11 and Figure 12 As shown, a first annular strip 22 is vertically arranged on the first surface of the first sealing ring 2, and the inner ring of the first annular strip 22 is aligned with the inner ring of the first sealing ring 2. A second annular strip 42 is arranged on the second sealing ring 4, and the second annular strip 42 is vertically connected to the top surface of the second sealing ring 4, and the inner ring of the second annular strip 42 is aligned with the inner ring of the second sealing ring 4.

[0080] After the first sealing ring 2 and the second sealing ring 4 are installed, the first annular strip 22 and the second annular strip 42 extend into the through hole 31 from the upper and lower sides respectively, and the sides of the first annular strip 22 and the second annular strip 42 that are close to each other are pressed together, so that a seal is formed between the first annular strip 22 and the second annular strip 42, which further enhances the sealing effect.

[0081] It is worth noting that since the battery has a positive and a negative electrode, two terminals 7 are provided, one for the positive electrode and one for the negative electrode. Two connecting blocks 1 are also provided, one for the positive electrode and one for the negative electrode. Two through holes 31 are made on the top cover plate 3. The positive electrode passes through one through hole 31 and is then welded to the positive connecting block, and the negative electrode passes through one through hole 31 and is then welded to the negative connecting block.

[0082] In some embodiments, such as Figures 1 to 3As shown, the top cover sheet 3 is also provided with an explosion-proof opening, and an explosion-proof sheet 6 is arranged in the explosion-proof opening. An explosion-proof sheet protection patch 5 is arranged outside the explosion-proof sheet 6. The explosion-proof sheet 6 is a pressure relief device using the rupture of the diaphragm. When the internal pressure of the equipment or container exceeds the set value, the explosion-proof sheet 6 will break or fall off, thereby releasing the pressure and protecting the equipment from damage.

[0083] According to the embodiments of the present application, in another aspect, a battery including any of the battery cover plates described above is also provided. The battery has the same technical effects as the battery cover plate, and thus will not be described again.

[0084] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the present application.

Claims

1. A battery cover plate, characterized by, The battery cover plate comprises a top cover sheet (3) provided with a through hole (31); a pole column (7) having a first end for connecting with an electrode assembly and a second end extending into the through hole (31); an electricity receiving block (1) connected with the second end of the pole column (7); a first sealing ring (2) abutting against one side of the electricity receiving block (1) and the other side of the first sealing ring (2) abutting against the top cover sheet (3) and provided with an annular groove (21), and the top cover sheet (3) is provided with an annular protrusion (32) on the side abutting against the first sealing ring (2), the annular protrusion (32) is inserted into the annular groove (21) and matched with the annular groove (21). The first sealing ring (2) is provided with a first annular strip (22) inserted into the through hole (31) and abutting against the inner wall of the through hole (31). The first end of the pole column (7) is provided with an extension (71), and the side of the first annular strip (22) away from the electricity receiving block (1) abuts against the extension (71). The inner wall of the annular groove (21) is provided with a first inclined surface (211), and the outer wall of the annular protrusion (32) is provided with a second inclined surface (321) matched with the first inclined surface (211). Further comprising:

2. The battery cover plate of claim 1, wherein, an insulating piece (8) provided with a groove (81) on the top surface, at least part of the electricity receiving block (1) is inserted into the groove (81), a first through hole (82) is formed on the groove bottom of the groove (81), the bottom surface of the insulating piece (8) is connected with the top surface of the top cover sheet (3), the first through hole (82) is coaxial with the through hole (31), and the part of the groove bottom of the groove (81) close to the first through hole (82) forms the annular protrusion (32).

3. The battery cover plate of claim 2, wherein, Further comprising:

4. The battery cover plate of claim 1, wherein, an insulating plate (9) provided with a second through hole (91), the top surface of the insulating plate is connected with the bottom surface of the top cover sheet (3), and the second through hole (91) is coaxial with the through hole (31); 5. The battery cover plate of claim 1, wherein, a second sealing ring (4) abutting against the bottom surface of the top cover sheet (3), the extension (71) and the side wall of the second through hole (91) respectively. The side wall of the second through hole (91) is provided with a third inclined surface (911), and the side wall of the second sealing ring (4) is provided with a fourth inclined surface (41) matched with the third inclined surface (911).

6. The battery cover plate of claim 1, wherein, The second sealing ring (4) is provided with a second annular strip (42) inserted into the through hole (31) and abutting against the inner wall of the through hole (31). The side of the second annular strip (42) away from the extension (71) abuts against the electricity receiving block (1). The battery cover plate comprises the battery cover plate according to any one of claims 1-9.

7. The battery cover plate of claim 6, wherein, ​ 8. The battery cover plate of claim 6, wherein, ​ 9. The battery cover plate of claim 8, wherein, ​ 10. A battery, characterized by ​

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