Battery cover plate and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate and a battery. The battery cover plate comprises a top cover plate, an insulating part and a conductive part, the insulating part is mounted on the top cover plate, and the conductive part is connected to one side, deviating from the top cover plate, of the insulating part. The top cover piece, the insulating piece and the conductive piece are all provided with avoiding structures allowing the tabs of the battery cell to penetrate through, and the tabs are configured to sequentially penetrate through the top cover piece, the insulating piece and the conductive piece and are connected to the side, away from the top cover piece, of the conductive piece after being bent. The battery cover plate is simple in structure and beneficial to improving the energy density of the battery, the connecting area of the tabs of the battery cell is located on the outer side of the top cover piece, when the tabs and the top cover piece are connected in a welded mode, the phenomenon that welding slag falls to pierce a battery cell diaphragm can be avoided, and the risk of internal short circuit of the battery cell is reduced.

Description

Technical Field

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

[0002] During the assembly process of the battery, it is usually necessary to weld the pole ear of the battery cell to the lead-out structure such as the pole on the cover plate. Specifically, the cover plate is provided with a through pole hole. During the assembly process, the sealing insulating member is sleeved on the pole and installed in the pole hole, and then one end of the pole is welded to the pole ear by welding. Finally, the cover plate and the battery cell are loaded into the shell. When the battery cell is loaded into the shell, the welding area between the pole ear and the pole is in the internal space of the shell. If the welding slag in the welding area falls, it will directly contact the battery cell, increasing the risk of the battery cell diaphragm being pierced, thereby increasing the risk of internal short circuit in the battery cell. At the same time, the sealing insulating member sleeved on the pole needs to ensure the insulation between the pole and the cover plate, and is used to seal the connection gap between the pole and the cover plate. This requires that multiple sealing ridges be set on the sealing insulating member, and the sealing insulating member needs to be squeezed during the assembly process to ensure the sealing, which will not only make the structure of the entire battery cover plate more complicated, which is not conducive to improving the energy density of the battery, but also make the assembly operation of the entire top cover assembly more complicated, reducing the battery processing efficiency. Utility Model Content

[0003] The first purpose of the utility model is to provide a battery cover plate, which has a relatively simple structure and is conducive to improving the energy density of the battery. The connection area of ​​the pole ear of the battery cell is located on the outside of the top cover sheet. When the pole ear and the top cover sheet are connected by welding, it can avoid the phenomenon of welding slag falling and piercing the battery cell diaphragm, thereby reducing the risk of internal short circuit in the battery cell.

[0004] The second object of the utility model is to provide a battery with a relatively simple structure, high energy density, high reliability and less prone to internal short circuit.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a battery cover plate, comprising: a top cover sheet; an insulating member, the insulating member is installed on the top cover sheet; a conductive member, the conductive member is connected to a side of the insulating member away from the top cover sheet; wherein: the top cover sheet, the insulating member and the conductive member are all provided with an avoidance structure for a pole ear of a power supply core to pass through, and the pole ear is configured to pass through the top cover sheet, the insulating member and the conductive member in sequence and be connected to a side of the conductive member away from the top cover sheet after being bent.

[0007] In some embodiments, the conductive member has a first receiving groove, and the pole ear is configured to pass through the top cover sheet, the insulating member and the conductive member and be connected to the inner wall of the first receiving groove after bending; the battery cover plate also includes a packaging member, which is conductively connected to the conductive member and is used to seal the first receiving groove.

[0008] In some specific embodiments, the first accommodating groove is a stepped groove and includes a first groove body and a second groove body, the first groove body is arranged close to the top cover sheet and the avoidance structure is arranged in the second groove body; wherein:

[0009] The first slot body is used to accommodate the portion of the pole tab extending out of the conductive member, and the packaging member is mounted on a first step surface formed by the first slot body and the second slot body.

[0010] In some embodiments, the insulating member has a second receiving groove, and the conductive member is installed in the second receiving groove.

[0011] In some specific embodiments, the second accommodating groove is a step groove and includes a third groove body and a fourth groove body; the third groove body is arranged close to the top cover sheet, and the avoidance structure is arranged in the fourth groove body; wherein: the conductive part has a first matching portion and a first stop protrusion arranged around the first matching portion, the first matching portion is accommodated in the third groove body, and the first stop protrusion stops on the second step surface formed by the third groove body and the fourth groove body.

[0012] In some embodiments, a mounting groove is provided on the top cover sheet, and the avoidance structure is arranged in the mounting groove; the insulating member includes a second matching portion and a second stop protrusion arranged around the second matching portion, the second matching portion is accommodated in the mounting groove, and the second stop protrusion stops at the top cover sheet.

[0013] In some embodiments, the avoidance structure includes a first strip-shaped hole provided on the top cover sheet, a second strip-shaped hole provided on the insulating member, and a third strip-shaped hole provided on the conductive member.

[0014] In some specific implementations, the width of the first strip-shaped hole is greater than the width of the second strip-shaped hole, and the width of the second strip-shaped hole is greater than the width of the third strip-shaped hole.

[0015] In some embodiments, the conductive part is provided with an injection hole, the insulating part is provided with a first circulation hole connected to the injection hole, the top cover sheet is provided with a second circulation hole connected to the first circulation hole, and the battery cover plate also includes a sealing nail fitted in the injection hole.

[0016] The utility model also discloses a battery, comprising a battery cell and the battery cover as described above, wherein the pole lug of the battery cell passes through the top cover, the insulating member and the conductive member in sequence and is connected to a side of the conductive member away from the top cover after being bent.

[0017] The beneficial effects of the battery cover of the utility model are as follows: since the top cover sheet, the insulating member and the conductive member are all provided with an avoidance structure for the pole ear to pass through, in the actual assembly process, the pole ear of the battery cell is passed through the top cover sheet, the insulating member and the conductive member and is bent and connected to the side of the conductive member away from the top cover sheet, so that when the pole ear of the battery cell is connected to the conductive member by welding and the battery is assembled, the welding area of ​​the conductive member and the pole ear is located in the outer area of ​​the battery shell, avoiding the phenomenon that the welding slag in the welding area falls and pierces the diaphragm of the battery cell. Since the battery cover of the present application only includes the structure of the top cover sheet, the insulating member and the conductive member, there is no need for the sealing member in the prior art, which simplifies the structure of the battery cover, is conducive to improving the energy density of the battery, facilitates the assembly of the battery cover, and is conducive to improving the production efficiency of the battery.

[0018] The beneficial effects of the battery of the embodiment of the utility model are as follows: due to the battery cover mentioned above, the battery has a simple structure, high energy density, high reliability, and is not prone to internal short circuit.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a battery cover plate of an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the battery cover of an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the battery of the embodiment of the utility model with the shell removed;

[0023] Figure 4 yes Figure 3 a schematic diagram of the exploded structure of the structure shown;

[0024] Figure 5 is a cross-sectional view of a battery according to an embodiment of the utility model;

[0025] Figure 6 yes Figure 5 A partial enlarged view of the structure shown.

[0026] Reference numerals:

[0027] 100, top cover sheet; 101, mounting groove; 102, first strip hole; 103, second flow hole;

[0028] 200, insulating member; 201, second receiving groove; 2011, third groove body; 2012, fourth groove body; 202, second strip hole; 203, first flow hole; 210, second matching portion; 220, second stop convex edge;

[0029] 300, conductive member; 301, first receiving groove; 3011, first groove body; 3012, second groove body; 302, third strip hole; 303, injection hole; 310, first matching portion; 320, first stop convex edge;

[0030] 400, packaging;

[0031] 500, Sealing nails;

[0032] 600, battery cell; 610, tab. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] The battery cover and the battery of a specific embodiment of the utility model are described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 and Figure 2 As shown, the battery cover of this embodiment includes a top cover sheet 100, an insulating member 200 and a conductive member 300. The insulating member 200 is installed on the top cover sheet 100, and the conductive member 300 is connected to the side of the insulating member 200 away from the top cover sheet 100. The top cover sheet 100, the insulating member 200 and the conductive member 300 are all provided with an avoidance structure for the tab 610 of the power supply core 600 to pass through. Figure 6 As shown, the tab 610 of the battery cell 600 passes through the top cover sheet 100, the insulating member 200 and the conductive member 300 in sequence and is connected to the side of the conductive member 300 away from the top cover sheet 100 after being bent. It can be understood that since the top cover sheet 100, the insulating member 200 and the conductive member 300 of this embodiment are all provided with an avoidance structure for the tab 610 to pass through, in the actual assembly process, the tab 610 of the battery cell 600 passes through the top cover sheet 100, the insulating member 200 and the conductive member 300 and is connected to the side of the conductive member 300 away from the top cover sheet 100 after being bent, so that when the tab 610 is connected to the conductive member 300 by welding, and after the battery is assembled, the welding area of ​​the conductive member 300 and the tab 610 is located in the outer area of ​​the battery shell, which prevents the welding slag in the welding area from falling and piercing the diaphragm of the battery cell 600. Since the battery cover of the present application only includes the structure of the top cover sheet 100, the insulating member 200 and the conductive member 300, there is no need for the sealing member in the prior art, which simplifies the structure of the battery cover, helps to improve the energy density of the battery, facilitates the assembly of the battery cover, and helps to improve the processing efficiency of the battery.

[0039] Of course, in other embodiments of the present invention, the tab 610 of the battery cell 600 can be connected to the conductive member 300 by other connection methods such as conductive adhesive bonding after being bent, and is not limited to welding.

[0040] Optional, reference Figure 2As shown, the avoidance structure of this embodiment includes a first strip hole 102 provided on the top cover sheet 100, a second strip hole 202 provided on the insulating member 200, and a third strip hole 302 provided on the conductive member 300. It can be understood that, under normal circumstances, the tabs 610 of the battery cell 600 are all sheet structures, and the avoidance structure includes the first strip hole 102, the second strip hole 202, and the third strip hole 302, which can not only ensure that the tab 610 can stably pass through the top cover sheet 100, the insulating member 200, and the conductive member 300, but also reduce the gap between the tab 610 and the first strip hole 102, the second strip hole 202, and the third strip hole 302, thereby preventing welding slag from falling from the gap between the tab 610 and the first strip hole 102, the second strip hole 202, and the third strip hole 302 to the battery cell 600 during welding, thereby further protecting the battery cell 600.

[0041] Of course, in other embodiments of the present invention, the specific shape of the avoidance structure can be adaptively selected according to the shape of the tab, and it is only necessary to ensure that the tab can pass through the avoidance structure.

[0042] For further reference, Figure 4 As shown, in this embodiment, there are two battery cells 600 connected to the battery top cover, and each battery cell 600 has a tab 610 connected to the battery top cover. One tab 610 is provided corresponding to one first strip hole 102, one second strip hole 202, and one third strip hole 302. Thus, it is convenient to realize the series connection or parallel connection between the two battery cells 600.

[0043] Preferably, the width of the first strip hole 102 is greater than the width of the second strip hole 202, and the width of the second strip hole 202 is greater than the width of the third strip hole 302. It is understandable that the widths of the first strip hole 102, the second strip hole 202 and the third strip hole 302 decrease in sequence, so that a plurality of steps can be formed on the path through which the tab 610 passes, and the formed steps are conducive to preventing welding slag from falling from the gaps between the tab 610 and the first strip hole 102, the second strip hole 202 and the third strip hole 302 to the battery cell 600 during welding, thereby further protecting the battery cell 600.

[0044] It should be noted that, in other embodiments of the present invention, there are multiple cells 600 connected to the battery top cover, there are also multiple tabs 610, there are one or more first strip holes 102, second strip holes 202 and third strip holes 302, in some embodiments, one tab 610 is provided corresponding to one first strip hole 102, one second strip hole 202 and one third strip hole 302, in some embodiments, multiple tabs 610 pass through the battery top cover from the same first strip hole 102, second strip hole 202 and third strip hole 302. That is to say, in other embodiments of the present invention, the specific number of the first strip hole 102, the second strip hole 202 and the third strip hole 302 can be adjusted according to the number of cells 600 and the connection method of the tabs 610. In addition, when there are multiple cells 600 connected to the battery top cover, the connection between the multiple cells 600 can be in any manner such as parallel, series or mixed connection.

[0045] refer to Figure 2 As shown, the conductive member 300 of this embodiment has a first receiving groove 301, and the tab 610 is configured to pass through the top cover sheet 100, the insulating member 200 and the conductive member 300 and is connected to the inner wall of the first receiving groove 301 after being bent. The battery cover also includes a packaging member 400, which is conductively connected to the conductive member 300 and is used to seal the first receiving groove 301. It can be understood that in the actual assembly process, the tab 610 is bent and welded to the bottom wall of the first receiving groove 301, which can hide the connection area of ​​the tab 610 inside the conductive member 300, which is conducive to protecting the tab 610 and avoiding the welding area from being subjected to external force and causing the welding to be unreliable. The additional packaging member 400 can close the first receiving groove 301, which is convenient for electrical connection with the external structure on the one hand, and prevents foreign matter from falling into the first receiving groove 301 and contaminating the welding area on the other hand.

[0046] It should be noted that the tab 610 can be connected to the bottom wall of the first receiving groove 301 or to the side wall of the first receiving groove 301 after being bent, and the specific method can be selected according to actual needs. In a preferred solution, the tab 610 can be connected to the bottom wall of the first receiving groove 301 after being bent.

[0047] Further, the first receiving groove 301 of the present embodiment is a stepped groove, and includes a first groove body 3011 and a second groove body 3012. The first groove body 3011 is arranged close to the top cover sheet 100 and the avoidance structure is arranged in the second groove body 3012. The first groove body 3011 is used to accommodate the portion of the pole ear 610 extending out of the conductive member 300. The pole ear 610 is accommodated in the first groove body 3011, and the package 400 is installed on the first step surface formed by the first groove body 3011 and the second groove body 3012. It can be understood that the first receiving groove 301 is a stepped groove, and the package 400 is installed on the first step surface, which is conducive to improving the connection stability of the package 400 relative to the conductive member 300. Specifically, the package 400 can be installed on the first step surface first, and then fixed by welding or bonding. At the same time, the pole ear 610 is accommodated in the first groove body 3011, which is also convenient for welding the pole ear 610 and the conductive member 300 in the actual assembly process, avoiding the influence of the welding process on other parts of the battery cover.

[0048] Preferably, the outer peripheral wall of the package 400 and the inner peripheral wall of the first slot body 3011 are arranged in parallel and spaced apart. More preferably, the outer peripheral wall of the package 400 stops at the inner peripheral wall of the first slot body 3011. Thus, the shapes of the package 400 and the first slot body 3011 match, which is conducive to improving the connection stability of the package 400.

[0049] refer to Figure 2 As shown, the insulating member 200 has a second receiving groove 201, and the conductive member 300 is installed in the second receiving groove 201. It can be understood that the insulating member 200 is a device for ensuring the insulation between the conductive member 300 and the top cover sheet 100. The conductive member 300 is installed in the second receiving groove 201 of the insulating member 200. On the one hand, the conductive member 300 can be restricted to ensure the installation stability of the conductive member 300. On the other hand, it ensures that the insulating member 200 can achieve complete insulation between the conductive member 300 and the top cover sheet 100 to avoid the short circuit between the conductive member 300 and the top cover sheet 100.

[0050] Further, the second receiving groove 201 is a step groove, and includes a third groove body 2011 and a fourth groove body 2012. The conductive member 300 has a first matching portion 310 and a first stop convex edge 320 arranged around the first matching portion 310. The third groove body 2011 is arranged close to the top cover sheet 100, and the avoidance structure is arranged in the fourth groove body 2012. The first matching portion 310 is accommodated in the third groove body 2011, and the first stop convex edge 320 stops on the second step surface formed by the third groove body 2011 and the fourth groove body 2012. It can be understood that the second accommodating groove 201 forms a step sleeve, and the conductive part 300 is also formed into a step structure. The first stop flange 320 stops on the second step surface formed by the third groove body 2011 and the fourth groove body 2012. On the one hand, it can increase the contact area between the conductive part 300 and the insulating part 200, ensuring that the insulating part 200 can stably support the conductive part 300. On the other hand, it can enable the insulating part 200 to completely wrap the lower part of the conductive part 300, ensuring complete insulation between the conductive part 300 and the top cover sheet 100, and avoiding short circuit between the conductive part 300 and the top cover sheet 100.

[0051] Preferably, the outer peripheral wall of the first matching portion 310 and the inner peripheral wall of the third slot body 2011 are arranged in parallel and spaced apart, and the outer peripheral wall of the first stop convex edge 320 and the inner peripheral wall of the fourth slot body 2012 are arranged in parallel and spaced apart. More preferably, the outer peripheral wall of the first matching portion 310 stops at the inner peripheral wall of the third slot body 2011, and the outer peripheral wall of the first stop convex edge 320 stops at the inner peripheral wall of the fourth slot body 2012. Thus, the shape of the conductive member 300 matches that of the second receiving slot 201, which is conducive to improving the connection stability of the conductive member 300.

[0052] refer to Figure 2 As shown, the top cover sheet 100 of this embodiment is provided with a mounting groove 101, the avoidance structure is provided in the mounting groove 101, the insulating member 200 includes a second matching portion 210 and a second stop convex edge 220 arranged around the second matching portion 210, the second matching portion 210 is accommodated in the mounting groove 101, and the second stop convex edge 220 is stopped against the top cover sheet 100. It can be understood that the insulating member 200 is formed as a step structure, the second matching portion 210 is accommodated in the mounting groove 101, and the second stop convex edge 220 is stopped against the top cover sheet 100, which can increase the contact area between the insulating member 200 and the top cover sheet 100 on the one hand, ensure the stability of the insulating member 200, and on the other hand, enable the insulating member 200 to cover the portion of the top cover sheet 100 surrounding the mounting groove 101 and the inner side wall of the mounting groove 101, ensure complete insulation between the conductive member 300 and the top cover sheet 100, and avoid the short circuit between the conductive member 300 and the top cover sheet 100.

[0053] Preferably, the outer wall of the second matching portion 210 is parallel to the inner wall of the mounting groove 101 and is spaced apart from each other. More preferably, the outer wall of the second matching portion 210 abuts against the inner wall of the mounting groove 101. Thus, the connection stability between the insulating member 200 and the top cover sheet 100 can be further improved.

[0054] refer to Figure 2 As shown, the conductive member 300 is provided with a liquid injection hole 303, the insulating member 200 is provided with a first flow hole 203 connected to the liquid injection hole 303, the top cover sheet 100 is provided with a second flow hole 103 connected to the liquid injection hole 303, and the battery cover plate further includes a sealing nail 500 fitted in the liquid injection hole 303. It can be understood that the electrolyte can be injected into the battery shell through the liquid injection hole 303, and the sealing nail 500 can seal the liquid injection hole 303 after the liquid injection is completed.

[0055] Preferably, the injection holes 303 are arranged in pairs and are arranged on both sides of the connection area between the tab 610 and the mounting groove 101 .

[0056] The utility model also discloses a battery, such as Figure 3-Figure 5 As shown, the battery includes a battery cell 600 and the battery cover as described above, and the tab 610 of the battery cell 600 passes through the top cover sheet 100, the insulating member 200 and the conductive member 300 in sequence and is connected to the side of the conductive member 300 away from the top cover sheet 100 after being bent. Due to the battery cover described above, the battery has a simple structure, high energy density, high reliability, and is not prone to internal short circuit.

[0057] It should be noted that, in a specific embodiment, when the positive and negative tabs 610 of a single battery cell 600 are located on the same side of the battery cell 600, two mounting grooves 101 are provided on the top cover sheet 100, two insulating members 200 and two conductive members 300 are also provided accordingly, and the positive and negative tabs are welded to one conductive member 300 respectively. The battery shell is a structure with one end open and the other end closed, the positive and negative tabs of the battery cell 600 are both provided toward the open end of the shell, and the top cover sheet 100 is matched with the open end of the battery shell. In another specific embodiment, when the positive and negative tabs of the battery cell 600 are located on both sides of the battery cell 600, a mounting groove 101 is provided on the top cover sheet 100, one insulating member 200 and one conductive member 300 are also provided accordingly, the battery shell is a structure with two ends open, the positive and negative tabs of the battery cell 600 are respectively provided corresponding to one open end, and each open end is matched with a battery top cover.

[0058] In addition, in the present embodiment, one battery top cover connects two battery cells 600. In other embodiments of the present invention, one battery top cover can connect multiple battery cells 600. Each battery cell 600 has a positive electrode ear and a negative electrode ear, and the connection relationship between the multiple battery cells 600 can be any one of parallel, series, and mixed.

[0059] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery cover, It is characterized in that include: Top cover sheet (100); An insulating member (200), the insulating member (200) being mounted on the top cover sheet (100); A conductive member (300), the conductive member (300) being connected to a side of the insulating member (200) facing away from the top cover sheet (100); Wherein: the top cover sheet (100), the insulating component (200) and the conductive component (300) are all provided with an avoidance structure for the pole ear (610) of the power supply core (600) to pass through, and the pole ear (610) is configured to pass through the top cover sheet (100), the insulating component (200) and the conductive component (300) in sequence and be connected to a side of the conductive component (300) facing away from the top cover sheet (100) after being bent.

2. The battery cover according to claim 1, It is characterized in that The conductive member (300) has a first receiving groove (301), and the tab (610) is configured to pass through the top cover sheet (100), the insulating member (200) and the conductive member (300) and be connected to the inner wall of the first receiving groove (301) after being bent; The battery cover plate further comprises a packaging component (400), wherein the packaging component (400) is conductively connected to the conductive component (300) and is used to seal the first receiving groove (301).

3. The battery cover according to claim 2, It is characterized in that The first accommodating groove (301) is a stepped groove and comprises a first groove body (3011) and a second groove body (3012), wherein the first groove body (3011) is arranged close to the top cover sheet (100) and the avoidance structure is arranged in the second groove body (3012); wherein: The first slot body (3011) is used to accommodate the portion of the pole ear (610) extending out of the conductive member (300), and the packaging member (400) is mounted on a first step surface formed by the first slot body (3011) and the second slot body (3012).

4. The battery cover according to claim 1, It is characterized in that The insulating member (200) has a second accommodating groove (201), and the conductive member (300) is installed in the second accommodating groove (201).

5. The battery cover according to claim 4, It is characterized in that The second accommodating groove (201) is a step groove and comprises a third groove body (2011) and a fourth groove body (2012); the third groove body (2011) is arranged close to the top cover sheet (100), and the avoidance structure is arranged in the fourth groove body (2012); wherein: The conductive member (300) comprises a first matching portion (310) and a first stop convex edge (320) arranged around the first matching portion (310); the first matching portion (310) is accommodated in the third slot body (2011); and the first stop convex edge (320) stops on a second step surface formed by the third slot body (2011) and the fourth slot body (2012).

6. The battery cover according to claim 1, It is characterized in that The top cover sheet (100) is provided with a mounting groove (101), and the avoidance structure is arranged in the mounting groove (101); the insulating member (200) comprises a second matching portion (210) and a second stop convex edge (220) arranged around the second matching portion (210); the second matching portion (210) is accommodated in the mounting groove (101), and the second stop convex edge (220) stops at the top cover sheet (100).

7. The battery cover according to claim 1, It is characterized in that The avoidance structure comprises a first strip-shaped hole (102) provided on the top cover sheet (100), a second strip-shaped hole (202) provided on the insulating member (200), and a third strip-shaped hole (302) provided on the conductive member (300).

8. The battery cover according to claim 7, It is characterized in that The width of the first strip-shaped hole (102) is greater than the width of the second strip-shaped hole (202), and the width of the second strip-shaped hole (202) is greater than the width of the third strip-shaped hole (302).

9. The battery cover according to claim 1, It is characterized in that The conductive member (300) is provided with a liquid injection hole (303), the insulating member (200) is provided with a first circulation hole (203) connected to the liquid injection hole (303), the top cover sheet (100) is provided with a second circulation hole (103) connected to the first circulation hole (203), and the battery cover plate further includes a sealing nail (500) fitted in the liquid injection hole (303).

10. A battery, It is characterized in that It comprises a battery cell (600) and a battery cover plate as described in any one of claims 1 to 9, wherein the pole ear (610) of the battery cell (600) passes through the top cover sheet (100), the insulating member (200) and the conductive member (300) in sequence and is connected to a side of the conductive member (300) facing away from the top cover sheet (100) after being bent.

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