Battery cover plate and battery

Abstract

The utility model discloses to the technical problem of prior art battery cover plate, provide battery cover plate and battery. On the structure of battery cover plate, the cover plate body is equipped with a through hole, the pole has two parts arranged in different directions, the second part of the pole is below the cover plate body, and the first part of the pole passes through the through hole. The connecting piece also has two parts, the second part of which is inserted into the sink groove of the second part of the pole. The pole and the connecting piece are connected through a two-stage welding structure, increasing the contact area and improving the current transmission efficiency. In other embodiments, the first and second accommodating grooves are provided and nested with the patch, which can avoid the protrusion of the welding mark and block the welding slag, and improve the welding slag protection performance. The utility model also provides a battery containing the battery cover plate, which has efficient current transmission, stable structure connection, reliable electrical insulation and good welding slag protection effect, and performs well in performance, safety and reliability, etc., improving the overall quality and service life.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery covers and batteries. Background Technology

[0002] In the field of battery technology, the battery cover, as a key component of a battery, undertakes multiple functions, including current transmission, encapsulating the internal structure of the battery, and realizing electrical connections. However, existing battery covers still face many technical challenges in design and practical application.

[0003] In terms of current transfer efficiency, traditional battery covers have unreasonable structural design, resulting in complex current transfer paths, increased resistance, and severe current loss, which cannot meet the high-efficiency current transfer requirements of high-power batteries.

[0004] In the manufacturing process of battery covers, the issue of weld slag protection urgently needs to be addressed. If weld slag falls onto the surface of critical components, it not only affects the connection effect but may also cause safety hazards such as short circuits. Therefore, how to design a battery cover with efficient current transmission capability, stable structural connection, reliable electrical insulation performance, and good weld slag protection has become a pressing technical problem to be solved in the current battery technology field. Utility Model Content

[0005] Therefore, it is necessary to provide battery covers and batteries to address the technical problems of existing battery covers, such as low current transfer efficiency, poor weld slag protection, and unstable electrical insulation performance. This would enable the battery to have high-efficiency current transfer capability, stable structural connection, reliable electrical insulation performance, and good weld slag protection, thereby improving the battery's performance, safety, and reliability.

[0006] The first aspect of this utility model provides a battery cover plate, including a cover plate body, a terminal post, and a connector; the cover plate body has a through hole arranged along a first direction; the connector has a first connector portion located above the cover plate body, a second connector portion penetrating the through hole, and a welding hole penetrating the first connector portion and the second connector portion in the first direction; the terminal post includes a first terminal post portion extending to the welding hole and a second terminal post portion located below the cover plate body; the outer contour dimensions of the projections of the first connector portion and the second terminal post portion onto the cover plate body along the first direction are larger than the size of the through hole; the first terminal post portion extends into the welding hole and... The second part of the pole post is connected to the connector. A groove is provided on the end face of the first direction for the second part of the connector to be inserted. The second part of the connector is inserted into the groove and connected to the second part of the pole post. The connection effect is further improved by multi-point welding of the pole post and the connector. At the same time, the nesting fit between the pole post and the connector can improve the connection effect of the two. The contact surface between the pole post and the connector is a standard smooth cylindrical surface. In addition, the groove and the second part of the connector form a tenon and mortise structure, which increases the contact area between the two, thereby improving the current carrying effect. In addition, the two are made of the same material and form an integral structure, which greatly improves the current transmission efficiency.

[0007] In other embodiments, in the first direction, a first receiving groove is provided on the end face of the first part of the connector away from the second part of the connector to expand the welding hole, and a first patch covering the welding hole is nested in the first receiving groove. The first receiving groove expands the outer diameter of the welding hole on the plane in the second direction. The expansion depth is greater than the height of the welding mark during welding, so as to avoid the welding mark protruding from the end face of the connector away from the cover plate body and affecting the connection effect with other mating parts. The first patch is nested into the welding hole in an interference fit manner to cover the welding hole, block the welding mark, and prevent the welding slag at the welding mark from falling off and affecting the subsequent mating effect between the connector and the mating part.

[0008] In other embodiments, in the first direction, a second receiving groove is formed on the end face of the second part of the electrode post away from the first part of the electrode post, and a second patch is nested in the second receiving groove. Along the first direction, the second patch covers the connection area between the second part of the electrode post and the second part of the connector. The second receiving groove serves two purposes: firstly, to thin the thickness of the second part of the electrode post, thereby improving the penetration effect on the second part of the connector; secondly, the second receiving groove also serves to cover the solder marks left by the penetration welding in the first direction, preventing the solder marks from protruding and affecting the connection effect between the second part of the electrode post and the electrode tab; and thirdly, the second patch can also block the solder slag, preventing the solder slag from falling between the second part of the electrode post and the electrode tab and affecting the connection effect.

[0009] In other embodiments, after the first patch is installed, in the first direction, the end face of the first patch away from the pole is on the same plane as the end face of the first part of the connector away from the pole; after the second patch is installed, in the first direction, the end face of the second patch away from the pole is on the same plane as the end face of the second part of the pole away from the first part of the pole. When the connector is electrically connected to other mating parts, the pole can also contact the corresponding mating part through the first patch. Since the material of the first patch is the same as that of the pole, the current can be quickly discharged, and the connector and mating part can be fully soldered without avoiding the first receiving groove, thus improving the connection effect and current transmission efficiency. When the second part of the pole is connected to the corresponding tab, due to the presence of the second patch, the second part of the pole and the corresponding tab can also be fully soldered. At the same time, since the material of the second patch is the same as that of the pole, the current transmission efficiency between the pole and the tab is improved.

[0010] In other embodiments, the side wall of the first part of the pole away from the second part of the pole is welded and fixed to the welding hole; the second part of the connector is inserted into the groove and welded through the second part of the pole. The first part of the pole is welded to the welding hole, and the second part of the connector is then welded through the second part of the pole, thereby forming a two-stage weld, which greatly improves the connection effect, reduces internal resistance, and improves current carrying efficiency.

[0011] In other embodiments, the first and second patches are made of conductive metal, including copper or aluminum, depending on the location of the electrode. When the electrode is positive, the first and second patches are made of aluminum, and vice versa. After installation, the first patch and one end of the first part of the connector are on the same plane, and the second patch and one end of the second part of the electrode are on the same plane. This increases the contact area between the first part of the connector and the mating part, improving the current conduction efficiency. It also increases the contact area between the second part of the electrode and the tab, further improving the current conduction efficiency.

[0012] In other embodiments, a sealing element is also included. The sealing element is press-fitted into the through hole and sleeved on the outer periphery of a portion of the second part of the connector. The sealing element is made of a non-conductive material and achieves sealing through radial interference, which ensures sealing reliability and avoids failure due to excessive compression. On the one hand, it improves the overall sealing performance. On the other hand, the sealing element, together with the first insulating element and the second insulating element, achieves isolation and insulation between the cover plate body and the terminal post, preventing electrical faults such as short circuits in the battery and ensuring the safe operation of the battery.

[0013] In other embodiments, a first insulating member is also included. The first insulating member includes a bottom and a side extending from the outer edge of the bottom in a first direction away from the cover plate body. A first part of the connector is disposed within the mounting space enclosed by the side and the bottom. A first through hole is provided at the bottom for a second part of the connector to pass through. The first insulating member effectively prevents electrical short circuits between the terminal post and the cover plate body, ensuring the electrical safety of the battery.

[0014] In other embodiments, a second insulating member is also included. The second insulating member is disposed between the cover plate body and the second part of the terminal post, and the second insulating member is provided with a second through hole for the second part of the connector to pass through. The second insulating member separates the second part of the terminal post from the cover plate body, further enhancing the electrical insulation performance of the battery cover plate and preventing electrical short circuits between different components. At the same time, the second insulating member also plays a certain role in buffering and protection, reducing damage to the internal structure of the battery cover plate caused by factors such as vibration and impact.

[0015] The second aspect of this utility model provides a battery that includes the aforementioned battery cover. Because the battery cover has the aforementioned advantages and characteristics, the battery containing the battery cover performs excellently in terms of performance, safety, and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the battery cover (after removing the first patch) in Embodiment 1 of this application.

[0017] Figure 2 This is a top view of the battery cover in Embodiment 1 of this application.

[0018] Figure 3 for Figure 2 A sectional view along line A.

[0019] Figure 4 for Figure 3 A partially enlarged schematic diagram of part B.

[0020] Figure label:

[0021] 100, pole post; 200, first insulating component; 300, cover plate body; 400, connector; 500, first patch; 600, seal; 700, second insulating component; 800, second patch;

[0022] 101. First part of the pole post; 102. Second part of the pole post;

[0023] 201. Side; 202. Bottom; 301. Through hole; 401. First part of connector; 402. Second part of connector;

[0024] 403, Welding hole; 4011, First receiving groove; 4021, Penetrating weld; 1021, Second receiving groove; 1022, Settling groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the communication of internal parts of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] Example 1

[0032] This embodiment discloses a battery cover plate, including a cover plate body 300, a terminal post 100 and a connector 400. The connection effect is further improved by multi-point welding of the terminal post 100 and the connector 400, and the overall sealing performance is also improved.

[0033] Specifically, the cover plate body 300 has a through hole 301 arranged along the first direction; the diameter of the through hole 301 needs to form a precise fit with the first part 101 of the pole post and the second part 402 of the connector.

[0034] In this embodiment, the first direction is the axial direction of the pole post 100, and the second direction is one of the radial directions of the pole post.

[0035] like Figures 1-4 As shown, the connector 400 in this embodiment is usually called the upper pole, while the pole 100 mentioned above is the corresponding lower pole, which is a conductor structure. Its material is usually consistent with that of the pole 100 to improve conductivity. At the same time, the same material can also improve the connection effect. The connector 400 has a first part 401 of the connector located above the cover plate body 300, a second part 402 of the connector through the through hole 301, and a welding hole 403 that passes through the first part 401 and the second part 402 of the connector in the first direction.

[0036] like Figures 1-4As shown, the pole post 100 includes a first part 101 extending to the welding hole 403 and a second part 102 located below the cover plate body 300. The first part 101 passes through the through hole 301 on the cover plate body 300. By designing the pole post 100 into two parts, and having the second part 102 directly connected to the electrode lug of the pole group, the transition through other connectors is avoided, thus improving the current carrying efficiency. At the same time, the surface of the first part 101 does not have steps and adopts a standard cylindrical structure, which also enhances the current carrying effect and facilitates assembly with the connector 400, improving assembly efficiency.

[0037] The outer contour dimensions of the projection of the first part 401 of the connector and the second part 102 of the pole on the cover plate body 300 along the first direction are larger than the size of the through hole 301, which can prevent the first part 401 of the connector and the second part 102 of the pole from passing through the through hole 301 on the cover plate body 300.

[0038] The first part 101 of the pole post extends into the welding hole 403 and is welded to the welding hole 403 of the connector 400 to form a whole. In this embodiment, the first part 101 of the pole post does not pass through the welding hole 403 in the first direction. That is, the maximum height of the first part 101 of the pole post in the first direction is lower than the maximum height of the welding hole 403 in the first direction. At the same time, in order to avoid the weld mark protruding after welding between the welding hole 403 and the first part 101 of the pole post, it is also necessary to ensure that the maximum height of the first part 101 of the pole post plus the height of the weld mark is less than the maximum height of the welding hole 403; to avoid the pole post 100 protruding from the connector 400 and affecting the subsequent connection.

[0039] Specifically, in this embodiment, the gap between the side wall of the first part 101 of the pole post away from the second part 102 of the pole post and the inner wall of the welding hole 403 is welded. Due to the limited welding position, welding can only be performed on the side wall of the first part 101 of the pole post away from the cover plate body 300, while the position where the first part 101 of the pole post extends deep into the welding hole 403 is not convenient for welding.

[0040] The second part 102 of the pole post is provided with a groove 1022 for the second part 402 of the connector to be inserted into on the end face in the first direction. The second part 402 of the connector is inserted into the groove 1022 and is welded through to the second part 102 of the pole post. Specifically, the end face of the second part 402 of the connector near the second part 102 of the pole post is connected and fixed to the second part 102 of the pole post by through welding, and the through welding part is located at the groove 1022.

[0041] In summary, by welding the first part 101 of the pole to the welding hole 403, and then by through welding the second part 402 of the connector to the second part 102 of the pole, a two-stage welding is formed, which greatly improves the connection effect, reduces internal resistance, and improves current carrying efficiency.

[0042] Meanwhile, the nested cooperation between the pole post 100 and the connector 400 can improve the connection effect between the two. At the same time, the contact surfaces of the pole post 100 and the connector 400 are both standard smooth cylindrical surfaces. In addition, the groove 1022 and the second part of the connector 402 form a tenon and mortise structure, which increases the contact area between the two, thereby improving the current transmission effect. Furthermore, since the two are made of the same material and form an integrated structure, the current transmission efficiency is greatly improved.

[0043] In this embodiment, in the first direction, a first receiving groove 4011 is provided on the end face of the first part 401 of the connector away from the second part 402 of the connector to expand the welding hole 403. Here, "expansion" is understood as expanding the outer diameter of the welding hole 403 on the plane in the second direction. Although the depth of expansion is not limited, considering the purpose of the first patch 500, the height of the expansion of the welding hole 403 in the first direction should be greater than the height of the weld mark during welding, so as to avoid the weld mark protruding from the end face of the connector 400 away from the cover plate body 300, which would affect the connection effect with other mating parts.

[0044] In this embodiment, in the first direction, the height of the first receiving groove 4011 is equal to the maximum height of the welding hole 403 minus the maximum height of the first part 101 of the pole post, and is also greater than the height of the solder mark, so that the first receiving groove 4011 can cover the solder mark and prevent the solder mark from protruding.

[0045] Meanwhile, a first patch 500 covering the welding hole 403 is nested in the first receiving groove 4011. The first patch 500 is usually nested into the welding hole 403 by an interference fit, so that the connection effect between the first patch 500 and the first part 401 of the connector is better. The first patch 500 is used to cover the welding hole 403 to block the welding mark and prevent the welding slag at the welding mark from falling off and affecting the subsequent docking effect between the connector 400 and the mating part.

[0046] In this embodiment, in the first direction, a second receiving groove 1021 recessed towards the countersunk groove 1022 is formed on the end face of the second part 102 of the pole post away from the first part 101 of the pole post. A second patch 800 is nested in the second receiving groove 1021, and the second patch 800 can cover the welding area between the welding part 4021 and the second part 402 of the connector. Similarly, the second receiving groove 1021 here serves two purposes: firstly, to thin the thickness of the second part 102 of the pole post, thereby improving the penetration effect on the second part 402 of the connector; secondly, the second receiving groove 1021 is also used to cover the weld marks left by the penetration welding in the first direction, preventing the weld marks from protruding and affecting the connection effect between the second part 102 of the pole post and the tab; and secondly, the second patch 800 here can also block the welding slag, preventing the welding slag from falling between the second part 102 of the pole post and the tab, thus affecting the connection effect.

[0047] Similarly, in the first direction, the depth of the second receiving groove 1021 is greater than the height of the solder paste, so that the second receiving groove 1021 can cover the solder paste and prevent the solder paste from protruding.

[0048] In this embodiment, after the first patch 500 is installed, in the first direction, the end face of the first patch 500 away from the pole post 100 and the end face of the first part 401 of the connector away from the pole post 100 are on the same plane. When the connector 400 is electrically connected to other mating parts, the pole post 100 can also contact the corresponding mating part through the first patch 500. The material of the first patch 500 is the same as that of the pole post 100, so the current can be quickly discharged. At the same time, the connector 400 and the mating part can be fully soldered without avoiding the first receiving groove 4011, thereby improving the connection effect and the current transmission efficiency.

[0049] In another embodiment, a first protrusion protruding towards the first patch 500 can be provided on the electrode post 100, and a first hole corresponding to the protrusion can be provided on the first patch 500. In this case, the electrode post 100 can directly contact the docking member, further improving the current transmission effect.

[0050] In this embodiment, after the second patch 800 is installed, in the first direction, the end face of the second patch 800 away from the pole post 100 and the end face of the second part 102 of the pole post away from the first part 101 of the pole post are on the same plane.

[0051] Similarly, when the second part 102 of the pole post is connected to the corresponding tab, the presence of the second patch 800 enables the second part 102 of the pole post to be fully soldered to the corresponding tab. At the same time, since the material of the second patch 800 is the same as that of the pole post 100, the current transmission efficiency between the pole post 100 and the tab is improved.

[0052] In another embodiment, a second protrusion protruding towards the second patch 800 can be provided on the electrode post 100, and a second hole corresponding to the protrusion can be provided on the second patch 800. In this case, the electrode post 100 can directly contact the tab, further improving the current transmission effect.

[0053] In this embodiment, the first patch 500 and the second patch 800 are made of conductive metal, including copper or aluminum, depending on the position of the terminal 100. When the terminal 100 is the positive electrode, the first patch 500 and the second patch 800 are made of aluminum, and vice versa.

[0054] After installation, the first patch 500 and one end of the first part 401 of the connector are on the same plane, and the second patch 800 and one end of the second part 102 of the pole are on the same plane. This increases the contact area between the first part 401 of the connector and the mating part, thus improving the current conduction efficiency. It also increases the contact area between the second part 102 of the pole and the tab, thus improving the current conduction efficiency.

[0055] To ensure sealing performance, the battery cover also includes a sealing element 600, which is made of a non-conductive material. It is press-fitted into the through hole 301 and fitted around the outer periphery of the second part 402 of the connector. The sealing element 600 achieves sealing through radial interference, ensuring sealing reliability while preventing failure due to excessive compression. This improves overall sealing performance. Furthermore, the sealing element 600, together with the first insulating element 200 and the second insulating element 700, isolates and insulates the cover body 300 from the terminal post 100, preventing short circuits and other electrical faults within the battery and ensuring safe battery operation.

[0056] In terms of insulation design, the battery cover also includes a first insulating element 200 and a second insulating element 700.

[0057] like Figure 3 As shown, this embodiment also includes a first insulating member 200 and a second insulating member 700. The first insulating member 200 includes a bottom 202 and a side portion 201 extending from the outer edge of the bottom 202 in a first direction away from the cover plate body 300. The connector 400 is disposed within the mounting space enclosed by the side portion 201 and the bottom 202. The bottom 202 is provided with a first through hole for the second portion 402 of the connector to pass through. The first insulating member 200 effectively prevents electrical short circuits between the terminal post 100 and the cover plate body 300, ensuring the electrical safety of the battery.

[0058] like Figure 3As shown, the second insulating member 700 is disposed between the cover plate body 300 and the second part 102 of the terminal post, and the second insulating member 700 is provided with a second through hole for the second part 402 of the connector to pass through. The second insulating member 700 separates the second part 102 of the terminal post from the cover plate body 300, further enhancing the electrical insulation performance of the battery cover and preventing electrical short circuits between different components. At the same time, the second insulating member 700 also plays a certain role in buffering and protection, reducing damage to the internal structure of the battery cover caused by vibration, impact and other factors.

[0059] Example 2

[0060] This embodiment discloses a battery including the battery cover plate described in detail in Embodiment 1 above. Because the battery cover plate possesses the numerous advantages and characteristics mentioned above, the battery including this cover plate exhibits excellent performance, safety, and reliability, which will not be elaborated upon further here. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; however, as long as the combinations of these technical features do not contradict each other, they should be considered within the scope of this specification.

[0061] The above embodiments merely illustrate several implementation methods of this application, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery cover, characterized in that, include: The cover plate body has through holes arranged along a first direction; The connector has a first part located above the cover plate body, a second part of the connector with a through hole, and a welding hole that passes through the first part and the second part of the connector in a first direction. The pole includes a first part extending to the welding hole and a second part located below the cover plate body; The outer contour dimensions of the projection of the first part of the connector and the second part of the pole post onto the cover plate body along the first direction are greater than the size of the through hole; The first part of the pole extends into the welding hole and is connected to the connector. The second part of the pole post is provided with a groove on its end face in the first direction for the second part of the connector to be inserted into. The second part of the connector is inserted into the groove and connected to the second part of the pole post.

2. A battery cover according to claim 1, characterized in that, In a first direction, a first receiving groove is provided on the end face of the first part of the connector away from the second part of the connector to expand the welding hole, and a first patch covering the welding hole is nested in the first receiving groove.

3. A battery cover according to claim 2, characterized in that, In the first direction, a second receiving groove is formed on the end face of the second part of the pole post away from the first part of the pole post, and a second patch is nested in the second receiving groove.

4. A battery cover according to claim 3, characterized in that, After the first patch is installed, in the first direction, the end face of the first patch away from the pole post and the end face of the first part of the connector away from the pole post are on the same plane. And / or, after the second patch is installed, in the first direction, the end face of the second patch away from the pole post is on the same plane as the end face of the second part of the pole post away from the first part of the pole post.

5. A battery cover according to claim 2, characterized in that, The sidewall of the first part of the pole post away from the second part of the pole post is welded to a portion of the inner wall of the welding hole; The end face of the second part of the connector near the second part of the pole post is welded through to the second part of the pole post.

6. A battery cover according to claim 4, characterized in that, The first patch and the second patch are made of conductive metal, including copper or aluminum.

7. A battery cover according to claim 1, characterized in that, It also includes a seal, which is press-fitted into the through hole and sleeved on a portion of the outer periphery of the second part of the connector.

8. A battery cover according to claim 1, characterized in that, It also includes a first insulating member, the first insulating member having a bottom and a side extending from the outer edge of the bottom in a first direction away from the cover plate body, the first part of the connector being disposed within the mounting space enclosed by the side and the bottom, the bottom having a first through hole for the second part of the connector to pass through.

9. A battery cover according to claim 1, characterized in that, It also includes a second insulating member, which is disposed between the cover plate body and the second part of the pole post, and the second insulating member is provided with a second through hole for the second part of the connector to pass through.

10. A battery, characterized in that, It includes a battery cover as described in any one of claims 1-9.

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