Cover plate structure for battery, battery, electric equipment and vehicle

Abstract

The utility model discloses a cover plate structure for a battery, the battery, electric equipment and a vehicle. The cover plate structure comprises a substrate, a first plastic part, a pole and a sealing part, the first plastic part is arranged on the substrate, and a first limiting groove opened towards the radial inner side of the second through hole is formed in the inner edge of the bottom of the first plastic part; the pole penetrates through the second through hole and the first through hole, and the pole and the first plastic part are arranged at an interval in the radial direction of the pole so as to define a sealed space between the pole and the first plastic part; the sealing part is arranged in the sealing space and wraps at least part of the periphery of the first plastic part, part of the sealing part is embedded into the first limiting groove, and the two sides, in the thickness direction of the substrate, of the sealing part abut against the groove wall of the first limiting groove and the substrate respectively. According to the cover plate structure disclosed by the utility model, through the combination of the sealing element and the first limiting groove, impurities are effectively isolated, the risk of short circuit is reduced, the safety performance and the reliability of the battery are remarkably improved, and a solid foundation is laid for large-scale production and application.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a cover structure for batteries, batteries, electrical equipment, and vehicles. Background Technology

[0002] Currently, the connection between the cover plate and the terminal post is mainly achieved by welding. However, the welding process faces challenges such as high cost, low production efficiency, and easy generation of welding defects. At the same time, impurities may be introduced during the welding process, which can adversely affect battery performance.

[0003] In related technologies, the connection efficiency and reliability can be improved by flanging and riveting the pole posts. However, due to the lack of equipment and process, such as the problem of metal shavings and metal wires generated during the production process not being properly resolved, there is a risk of short circuit under high voltage environment, which limits the large-scale production and application of this solution. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a cover plate structure for a battery. According to the cover plate structure of this invention, the combination of the sealing element and the first limiting groove effectively isolates impurities, reduces the risk of short circuits, significantly improves the safety performance and reliability of the battery, and lays a solid foundation for large-scale production applications.

[0005] This utility model also proposes a battery having the above-mentioned cover plate structure.

[0006] This utility model also proposes an electrical device having the above-mentioned battery.

[0007] This utility model also proposes a vehicle having the above-mentioned electrical equipment.

[0008] The cover plate structure according to this utility model is used for a battery. The cover plate structure includes: a substrate, the substrate having a first through hole suitable for the electrode post to pass through; a first plastic part, the first plastic part being disposed on the substrate, the first plastic part having a second through hole suitable for the electrode post to pass through, the second through hole communicating with the first through hole, and a first limiting groove formed on the bottom inner edge of the first plastic part opening radially inward toward the second through hole; an electrode post, the electrode post passing through the second through hole and the first through hole, the electrode post and the substrate being radially spaced apart to define a sealing space between them; and a sealing member, the sealing member being disposed within the sealing space and covering at least a portion of the outer periphery of the first plastic part, a portion of the sealing member being embedded in the first limiting groove and abutting against the groove wall of the first limiting groove and the substrate on both sides in the thickness direction of the substrate.

[0009] According to some embodiments of this utility model, by setting the sealing element in the sealed space and covering at least part of the outer periphery of the first plastic part, and limiting the sealing element through the first limiting groove, impurities such as metal shavings and metal wires that may be generated during the production process can be effectively isolated, reducing the risk of short circuit, improving the safety performance and reliability of the battery, providing strong support for the large-scale production and application of the battery, and reducing costs.

[0010] According to some embodiments of the present invention, the bottom outer edge of the pole post is formed with a first flange extending circumferentially along the pole post and protruding radially outward toward the pole post. The first flange is spaced apart from the substrate in the thickness direction to define a mating gap. The cover plate structure further includes a second plastic part, which is disposed on the side of the substrate away from the first plastic part. The second plastic part is formed with a third through hole suitable for the pole post to pass through. At least a portion of the second plastic part is disposed within the mating gap. The sealing member contacts the substrate, the first plastic part, the second plastic part, and the pole post respectively.

[0011] According to some embodiments of the present invention, a second limiting groove is formed on the bottom inner edge of the second plastic part, which opens radially inward toward the third through hole, and at least a portion of the first flange is disposed in the second limiting groove and abuts against the groove wall of the second limiting groove.

[0012] According to some embodiments of the present invention, a lower plastic limiting groove is formed on the bottom inner edge of the substrate, which opens radially inward toward the third through hole. The second plastic part has a mating part, which is disposed in the mating gap and embedded in the lower plastic limiting groove and abuts against the groove wall of the lower plastic limiting groove.

[0013] According to some embodiments of the present invention, the top inner edge of the first plastic part is formed with a third limiting groove that opens radially inward toward the second through hole; the cover plate structure further includes: a gasket, the gasket being disposed in the third limiting groove along the inner edge of the second through hole, and the top outer edge of the pole post being formed with a second flange extending circumferentially along the pole post and protruding radially outward toward the pole post, the second flange abutting against the top surface of the gasket.

[0014] According to some embodiments of the present invention, the first plastic part has a first protrusion and a second protrusion. The first protrusion extends toward the top of the pole post, and the second protrusion extends radially inward toward the second through hole. The third limiting groove is defined between the first protrusion and the second protrusion. The top surface of the first protrusion is higher than the top surface of the gasket and lower than the top surface of the pole post.

[0015] According to some embodiments of this utility model, the sealing element is constructed as an elastic element.

[0016] The battery according to this utility model is briefly described below.

[0017] The battery according to this utility model includes the cover plate structure described in any of the above embodiments. Because the battery according to this utility model includes the cover plate structure described in any of the above embodiments, the battery according to this utility model has a low short-circuit risk due to the cover plate structure, and the safety performance and reliability of the battery are improved.

[0018] The electrical equipment according to this utility model is briefly described below.

[0019] The electrical device according to this utility model includes the battery described in any of the above embodiments. Because the electrical device according to this utility model includes the battery described in any of the above embodiments, the battery provides a stable and safe power supply to the device, which has low short-circuit risk, high safety performance, and high reliability.

[0020] The vehicle according to this utility model is briefly described below.

[0021] The vehicle according to this utility model includes the electrical equipment described in any of the above embodiments. Because the vehicle according to this utility model includes the electrical equipment described in any of the above embodiments, the vehicle according to this utility model has a battery that provides long-lasting and safe power support with low short-circuit risk, high safety performance, and high reliability.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is an exploded view of a cover plate structure according to an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of a cover plate structure according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the top surface of the first plastic part of the cover plate structure according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the bottom surface of the first plastic part of the cover plate structure according to an embodiment of the present utility model;

[0028] Figure 5 This is a partial structural schematic diagram of the top surface of the substrate of the cover plate structure according to an embodiment of the present invention;

[0029] Figure 6 This is a partial structural schematic diagram of the bottom surface of the substrate of the cover plate structure according to an embodiment of the present invention.

[0030] Figure label:

[0031] 1. Cover plate structure;

[0032] 11. Substrate; 111. First through hole; 112. Fourth limiting groove; 113. Fifth limiting groove;

[0033] 12. First plastic part; 121. Second through hole; 122. First limiting groove; 123. Third limiting groove; 124. First protrusion; 125. Second protrusion.

[0034] 13. Pole post; 131. First flange; 132. Second flange;

[0035] 14. Sealing components;

[0036] 15. Second plastic part; 151. Third through hole; 152. Second limiting groove;

[0037] 16. Gasket. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, 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," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In related technologies, the connection efficiency and reliability can be improved by flanging and riveting the pole posts. However, due to the lack of equipment and process, such as the problem of metal shavings and metal wires generated during the production process not being properly resolved, there is a risk of short circuit under high voltage environment, which limits the large-scale production and application of this solution.

[0042] The following is for reference. Figures 1-6 Description of cover plate structure 1 according to an embodiment of the present utility model.

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, the cover plate structure 1 according to the present invention is used for a battery. The cover plate structure 1 includes a substrate 11. The substrate 11 has a first through hole 111 suitable for the electrode post 13 to pass through. Therefore, the size and shape of the first through hole 111 can allow the electrode post 13 to pass through, realizing the riveting connection between the electrode post 13 and the cover plate. Compared with the welding connection, the riveting connection is more efficient and lower in cost.

[0044] The cover structure 1 also includes a first plastic part 12, which is disposed on the substrate 11. The first plastic part 12 has a second through hole 121 suitable for the electrode post 13 to pass through, so the size and shape of the second through hole 121 can allow the electrode post 13 to pass through. The second through hole 121 communicates with the first through hole 111, so that the electrode post 13 can pass through the second through hole 121 and the first through hole 111 to connect with an external circuit, thereby realizing the electrical connection of the battery. The bottom inner edge of the first plastic part 12 has a first limiting groove 122 that opens radially inward toward the second through hole 121. The first limiting groove 122 is used to accommodate a portion of the sealing member 14.

[0045] The cover structure 1 also includes a terminal post 13, which is responsible for transmitting electrical energy from inside the battery to external devices. The terminal post 13 passes through the second through hole 121 and the first through hole 111, allowing it to pass from one side of the cover structure 1 to the other, thus transmitting electrical energy from inside the battery to the outside. The terminal post 13 and the substrate 11 are radially spaced to define a sealing space between them, which accommodates the seal 14 and provides the necessary sealing effect.

[0046] The cover structure 1 also includes a sealing element 14, which is disposed within the sealing space and covers at least a portion of the outer periphery of the first plastic part 12, increasing the contact area between the sealing element 14 and the first plastic part 12, thereby improving the sealing tightness between the sealing element 14 and the first plastic part 12. A portion of the sealing element 14 is embedded in the first limiting groove 122. The first limiting groove 122 not only provides a receiving space for the sealing element 14, but also enhances the stability of the sealing element 14 by embedding a portion of it into the first limiting groove 122, preventing displacement during assembly or use, and making the bond between the sealing element 14, the first plastic part 12, and the substrate 11 more robust. On both sides of the substrate 11 in the thickness direction, the sealing element 14 is tightly fitted to the groove wall of the first limiting groove 122 and the substrate 11, respectively, effectively blocking the path of external substances into the battery interior, thereby preventing conductive substances from short-circuiting the electrode 13 and the substrate 11.

[0047] By placing the seal 14 within the sealed space and covering at least a portion of the outer periphery of the first plastic part 12, and by limiting the seal 14 through the first limiting groove 122, impurities such as metal shavings and metal wires that may be generated during the production process can be effectively isolated, reducing the risk of short circuits, improving the safety performance and reliability of the battery, providing strong support for the large-scale production and application of the battery, and reducing costs.

[0048] Therefore, according to the cover structure 1 of this utility model, the combination of the sealing element 14 and the first limiting groove 122 effectively isolates impurities, reduces the risk of short circuit, significantly improves the safety performance and reliability of the battery, and lays a solid foundation for large-scale production and application.

[0049] According to some embodiments of this utility model, such as Figure 2 As shown, a first flange portion 131 is formed on the bottom outer edge of the pole post 13, extending circumferentially along the pole post 13 and protruding radially outward toward the pole post 13. The first flange portion 131 and the substrate 11 are spaced apart in the thickness direction to define a mating gap. The mating gap is used to realize the assembly of the second plastic part 15, so that the second plastic part 15 can be tightly embedded and fixed between the pole post 13 and the substrate 11.

[0050] The cover structure 1 also includes a second plastic component 15, which is disposed on the side of the substrate 11 opposite to the first plastic component 12. The first plastic component 12 and the second plastic component 15 respectively serve as insulation on both sides of the substrate 11. The second plastic component 15 has a third through hole 151 suitable for the electrode post 13 to pass through, so the shape and size of the third through hole 151 meet the requirements for the electrode post 13 to pass through. At least a portion of the second plastic component 15 is disposed within the mating gap to enhance the stability of the structure, provide additional support, and achieve a sealing effect. The sealing component 14 contacts the substrate 11, the first plastic component 12, the second plastic component 15, and the electrode post 13 respectively, thereby limiting the sealing component 14 and ensuring that the sealing component 14 can be stably maintained in the sealing space. This ensures the sealing performance of the cover structure 1, prevents conductive materials from short-circuiting between the electrode post 13 and the substrate 11, and maintains the stability and performance of the internal components.

[0051] According to some embodiments of this utility model, such as Figure 2 As shown, the bottom inner edge of the second plastic part 15 has a second limiting groove 152 that opens radially inward toward the third through hole 151. The second limiting groove 152 is used to cooperate with the first flange 131 to limit and position the first flange 131, which facilitates assembly and provides additional fixing and support. This makes the position of the terminal 13 in the cover structure 1 more stable, improves the resistance of the cover structure 1 to external impacts and vibrations, and enables the battery to maintain stable performance in various harsh environments. At least a portion of the first flange 131 is disposed in the second limiting groove 152 and abuts against the groove wall of the second limiting groove 152. This not only ensures the accuracy of the terminal 13 during assembly but also effectively prevents the terminal 13 from shaking or displacing during use, thereby ensuring the stability and reliability of the battery's electrical connection.

[0052] According to some embodiments of this utility model, such as Figure 2As shown, a lower plastic limiting groove 112 is formed on the inner bottom edge of the substrate 11, opening radially inward toward the third through hole 151. The lower plastic limiting groove 112 is used to accommodate the mating portion of the second plastic part 15. The second plastic part 15 has a mating portion, which is disposed within the mating gap and embedded in the lower plastic limiting groove 112, abutting against the groove wall of the lower plastic limiting groove 112. The mating portion of the second plastic part 15 can be tightly embedded in the lower plastic limiting groove 112, ensuring a more secure and stable connection between the second plastic part 15 and the substrate 11.

[0053] The lower plastic limiting groove 112 not only provides a space for the mating part of the second plastic part 15, but also enhances the fixing effect of the second plastic part 15 on the substrate 11 through the anti-blocking effect of the groove wall, preventing it from shifting during assembly or use. This not only improves the overall stability of the cover structure 1, but also enhances its resistance to external impacts and vibrations, so that the battery can maintain stable performance in various usage environments.

[0054] By embedding the mating part of the second plastic part 15 into the lower plastic limiting groove 112, it is possible to effectively prevent conductive materials from forming a conductive path between the electrode post 13 and the substrate 11, thereby reducing the risk of short circuit and improving the safety performance and reliability of the battery.

[0055] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, a third limiting groove 123 is formed on the inner edge of the top of the first plastic part 12, which opens radially inward toward the second through hole 121. The third limiting groove 123 provides installation space for the gasket 16, so that the gasket 16 can be securely installed on the first plastic part 12.

[0056] The cover plate structure 1 also includes a gasket 16, which is disposed within the third limiting groove 123 along the inner edge of the second through hole 121, allowing the gasket 16 to be correctly positioned and held in the desired position. Simultaneously, the gasket 16 is disposed along the inner edge of the second through hole 121, ensuring a tight fit against the edge of the second through hole 121, so that the second flange 132 abuts against the top surface of the gasket 16. The top outer edge of the pole post 13 forms a second flange 132 extending circumferentially along the pole post 13 and protruding radially outward from the pole post 13, anchoring the pole post 13 within the first through hole 111 of the substrate 11. The second flange 132 abuts against the top surface of the gasket 16, achieving direct contact between the second flange 132 and the gasket 16. The gasket 16 effectively disperses the pressure from the pole post 13, thereby protecting the first plastic part 12 from direct impact and wear.

[0057] According to some embodiments of this utility model, such as Figure 3As shown, the first plastic part 12 has a first protrusion 124 and a second protrusion 125. The first protrusion 124 extends toward the top of the pole post 13, and the second protrusion 125 extends radially inward toward the second through hole 121, thus defining a third limiting groove 123 between the first protrusion 124 and the second protrusion 125, thereby achieving the engagement of the third limiting groove 123 with the gasket 16. The top surface of the first protrusion 124 is higher than the top surface of the gasket 16 and lower than the top surface of the pole post 13. Assuming that the first protrusion 124, the gasket 16, and the pole post 13 are compared on the same vertical line, the top surface of the pole post 13 is the highest, followed by the top surface of the first protrusion 124, and finally the top surface of the gasket 16. This facilitates the forming of the first flange 131 when anchoring the pole post 13. During the anchoring process of the pole post 13, the first flange 131 of the pole post 13 needs to be formed to meet the assembly requirements. Since the top surface of the first protrusion 124 is higher than the top surface of the gasket 16 but lower than the top surface of the pole post 13, it provides sufficient space and support for the forming of the first flange 131, making the forming process smoother and more controllable.

[0058] According to some embodiments of this utility model, the seal 14 is constructed as an elastic element. The elastic element is capable of deforming under external force and returning to its original shape after the force is removed. By constructing the seal 14 as an elastic element, even in the presence of minute gaps or irregular shapes, it can be filled and adapted through its elastic deformation, improving the reliability and durability of the seal. The elastic seal 14 is easy to install and remove because it can be easily compressed or stretched to adapt to the installation space.

[0059] According to some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, a fourth limiting groove 112 is formed on the top inner edge of the substrate 11, opening toward the first through hole 111. At least a portion of the first plastic part 12 is disposed within the fourth limiting groove 112, simplifying the assembly process and improving assembly efficiency. The tight fit between the fourth limiting groove 112 and the first plastic part 12 provides additional stability and support for the overall structure.

[0060] According to some embodiments of this utility model, such as Figure 6 As shown, a fifth limiting groove 113 is formed on the bottom inner edge of the substrate 11, opening toward the first through hole 111. At least a portion of the second plastic part 15 is disposed within the fifth limiting groove 113, simplifying the assembly process and improving assembly efficiency. The tight fit between the fifth limiting groove 113 and the second plastic part 15 provides additional stability and support for the overall structure.

[0061] The battery according to this utility model is briefly described below.

[0062] The battery according to this utility model includes the cover structure 1 in any of the above embodiments. Since the battery according to this utility model includes the cover structure 1 in any of the above embodiments, the battery according to this utility model has a low short-circuit risk due to the cover structure 1, and the safety performance and reliability of the battery are improved.

[0063] The electrical equipment according to this utility model is briefly described below.

[0064] The electrical device according to this utility model includes the battery in any of the above embodiments. Since the electrical device according to this utility model includes the battery in any of the above embodiments, the battery, with its low short-circuit risk, high safety performance, and high reliability, provides a stable and safe power supply for the electrical device.

[0065] The vehicle according to this utility model is briefly described below.

[0066] The vehicle according to this utility model includes the electrical equipment in any of the above embodiments. Because the vehicle according to this utility model includes the electrical equipment in any of the above embodiments, the vehicle has a battery with low short-circuit risk, high safety performance, and high reliability, providing the vehicle with long-lasting and safe power support.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cover plate structure for a battery, characterized by, include: A substrate (11) having a first through hole (111) suitable for the pole post (13) to pass through; A first plastic part (12) is disposed on the substrate (11). The first plastic part (12) has a second through hole (121) suitable for the pole post (13) to pass through. The second through hole (121) communicates with the first through hole (111). A first limiting groove (122) is formed on the bottom inner edge of the first plastic part (12) and opens radially inward toward the second through hole (121). A pole post (13) is provided through the second through hole (121) and the first through hole (111). The pole post (13) and the substrate (11) are arranged radially apart to define a sealing space between them. A sealing element (14) is disposed within the sealing space and covers at least a portion of the outer periphery of the first plastic part (12). A portion of the sealing element (14) is embedded in the first limiting groove (122) and abuts against the groove wall of the first limiting groove (122) and the substrate (11) on both sides in the thickness direction of the substrate (11).

2. The cover plate structure according to claim 1, wherein The bottom outer edge of the pole post (13) is formed with a first flange (131) that extends circumferentially along the pole post (13) and protrudes radially outward toward the pole post (13). The first flange (131) and the substrate (11) are spaced apart in the thickness direction to define a mating gap. The cover plate structure also includes: The second plastic part (15) is disposed on the side of the substrate (11) away from the first plastic part (12). The second plastic part (15) has a third through hole (151) suitable for the pole post (13) to pass through. At least a portion of the second plastic part (15) is disposed in the mating gap. The sealing member (14) contacts the substrate (11), the first plastic part (12), the second plastic part (15) and the pole post (13) respectively.

3. The cover plate structure according to claim 2, wherein The bottom inner edge of the second plastic part (15) is formed with a second limiting groove (152) that opens radially inward toward the third through hole (151). At least a portion of the first flange (131) is disposed in the second limiting groove (152) and abuts against the groove wall of the second limiting groove (152).

4. The cover plate structure according to claim 2, wherein The bottom inner edge of the substrate (11) is formed with a lower plastic limiting groove that opens radially inward toward the third through hole (151). The second plastic part (15) is formed with a mating part, which is disposed in the mating gap and embedded in the lower plastic limiting groove (112) and abuts against the groove wall of the lower plastic limiting groove (112).

5. The cover plate structure according to claim 1, wherein The top inner edge of the first plastic part (12) is formed with a third limiting groove (123) that opens radially inward toward the second through hole (121); The cover plate structure further includes: a gasket (16), the gasket (16) being disposed in the third limiting groove (123) along the inner edge of the second through hole (121), and the top outer edge of the pole post (13) forming a second flange (132) extending circumferentially along the pole post (13) and protruding radially outward toward the pole post (13), the second flange (132) abutting against the top surface of the gasket (16).

6. The cover plate structure according to claim 5, wherein The first plastic part (12) has a first protrusion (124) and a second protrusion (125). The first protrusion (124) extends toward the top of the pole post (13), and the second protrusion (125) extends radially inward toward the second through hole (121). The third limiting groove (123) is defined between the first protrusion (124) and the second protrusion (125). The top surface of the first protrusion (124) is higher than the top surface of the gasket (16) and lower than the top surface of the pole post (13).

7. The cover plate structure according to claim 1, wherein The seal (14) is constructed as an elastic element.

8. A battery, characterized by Includes the cover plate structure described in any one of claims 1-7.

9. An electric device, characterized by Includes the battery as described in claim 8.

10. A vehicle characterized by comprising: Includes the electrical equipment as described in claim 9.

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