Conductive assembly, cover plate assembly and battery

Abstract

The utility model provides a conductive assembly, a cover plate assembly and a battery, and relates to the technical field of batteries. The conductive assembly comprises a first conductive part, a second conductive part and a third conductive part. The second conductive part is located on the side, opposite to the first welding groove, of the first conductive part, and the orthographic projection of the second conductive part on the first conductive part is located in the first welding groove, so that the second conductive part can be opposite to the first welding groove, and the distance between the second conductive part and the bottom wall of the first welding groove is small. Therefore, when the second conductive piece is connected with the first conductive piece through penetration welding, the bottom wall of the first welding groove can penetrate through the first conductive piece to enable the first conductive piece to be welded with the second conductive piece, so that the process difficulty when the first conductive piece is connected with the second conductive piece through penetration welding is reduced. And one side, back on to the second conductive part, of the third conductive part is flush with the notch of the first welding groove, so that the contact area between the conductive assembly and the busbar is larger, and the overcurrent capability of the conductive assembly is enhanced.

Description

Technical Field

[0001] The present application relates to a conductive component, a cover plate component and a battery, belonging to the technical field of battery modules. Background Art

[0002] In a battery module, a pole post is a component for electrically connecting the battery module to an external structural member. Inside the battery module, the pole post is electrically connected to the tab of the electrode assembly through a transfer piece. In order to make the electrical connection effect between the pole post and the transfer piece reliable, the pole post and the transfer piece can be connected by penetration welding. And in order to facilitate the welding of the pole post and the transfer piece, a welding groove structure can be provided on the pole post to make the welding of the pole post and the transfer piece more convenient.

[0003] Currently, in order to ensure that the pole post has good overcurrent capacity and reliable electrical connection with the external structural member in the battery module, the welding groove on the pole post should not be opened too large. However, this also results in a narrow welding space between the pole post and the transfer piece, making it inconvenient to weld the pole post and the transfer piece. Utility Model Content

[0004] The present application provides a conductive component, a cover plate component and a battery, which solves the problem of inconvenient welding between the pole post and the transfer piece in the related art.

[0005] The present application provides a conductive component, including:

[0006] A first conductive member, having a first welding groove;

[0007] A second conductive member, welded and connected to a side of the first conductive member facing away from the notch of the first welding groove, and a positive projection of the second conductive member formed on the first conductive member is located in the first welding groove;

[0008] A third conductive member, embedded in the first welding groove, and a side of the third conductive member facing away from the bottom wall of the first welding groove is flush with the notch of the first welding groove.

[0009] In some embodiments, the first welding groove includes a connected first groove portion and a second groove portion, an inner diameter of the first groove portion is smaller than an inner diameter of the second groove portion, and an outer wall of the third conductive member contacts both an inner side wall of the first groove portion and an inner side wall of the second groove portion.

[0010] In some embodiments, the second groove portion is connected to an end of the first groove portion facing away from the second conductive member, and the notch of the first welding groove is located at an end of the second groove portion facing away from the first groove portion.

[0011] In some embodiments, there is a gap between the third conductive member and the bottom wall of the first welding groove.

[0012] In some embodiments, the first conductive member is further provided with a second welding groove, the second welding groove and the first welding groove are located on opposite sides of the first conductive member, and at least a part of the second conductive member is located in the second welding groove.

[0013] In some embodiments, there is a gap between the side wall of the second conductive member and the side wall of the second welding groove.

[0014] In some embodiments, the central axis of the first welding groove is coaxial with the central axis of the second welding groove.

[0015] Based on the above conductive assembly, the present application further provides a cover plate assembly, including a substrate and the above conductive assembly, the first conductive member penetrates through the substrate, and the notch of the first welding groove is located outside the substrate.

[0016] In some embodiments, a limiting groove is formed on the outer periphery of the first conductive member, and at least a part of the substrate is located in the limiting groove.

[0017] Based on the above cover plate assembly, the present application further provides a battery, including a housing, an electrode assembly and the above cover plate assembly, the housing has a cavity and an opening communicating with the cavity, the electrode assembly is disposed in the cavity, the substrate seals the opening, and the second conductive member is electrically connected to the electrode assembly.

[0018] In the conductive assembly provided by the present application, the first conductive member is provided with a first welding groove, which can reduce the thickness dimension of the part of the first conductive member corresponding to the first welding groove. The second conductive member is located on the side of the first conductive member facing away from the first welding groove, and the orthographic projection of the second conductive member on the first conductive member is located in the first welding groove, so that the second conductive member can be opposite to the first welding groove, and the second conductive member and the bottom wall of the first welding groove have a small distance. In this way, when the second conductive member and the first conductive member are connected by penetration welding, the bottom wall of the first welding groove can penetrate the first conductive member to weld the first conductive member and the second conductive member, thereby reducing the process difficulty when the first conductive member and the second conductive member are connected by penetration welding. The second conductive member can be used to connect with the tab of the electrode assembly. The first conductive member faces away from the second conductive member, that is, the side of the first conductive member where the notch of the first welding groove is located can be used to connect with an external connector such as a bus bar. The third conductive member is embedded in the first welding groove, so that the third conductive member can be filled in the first welding groove. In this way, the third conductive member can support the first conductive member in the first welding groove, so that the first conductive member has a better structure. The side of the third conductive member facing away from the second conductive member is flush with the notch of the first welding groove, which can make the end face of the first conductive member located outside the first welding groove and the side of the third conductive member facing away from the second conductive member both contact with the bus bar, so as to increase the contact area between the conductive assembly and the bus bar and enhance the current-carrying capacity of the conductive assembly.

[0019] In addition, since the third conductive member can fill the first welding groove to enable the conductive assembly to have better current-carrying capacity, the size of the first welding groove can be set relatively larger, so that the welding space between the first conductive member and the second conductive member is larger, which can further facilitate the connection between the first conductive member and the second conductive member by penetration welding.

[0020] In the cover plate assembly proposed in this application, since it includes the above-mentioned conductive assembly, the cover plate assembly also has good current-carrying capacity, and the manufacturing process difficulty of the cover plate assembly is reduced.

[0021] In the battery proposed in this application, since it includes the above-mentioned cover plate assembly, the power release performance of the battery is better, and the manufacturing process difficulty is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Through the following detailed description with reference to the drawings, the above and other objects, features, and advantages of the embodiments of the present application will become more readily understood. In the drawings, multiple embodiments of the present application will be illustrated by way of example and not limitation, where:

[0023] Figure 1 is a schematic diagram of the battery according to an embodiment of the present application;

[0024] Figure 2 is Figure 1 a cross-sectional schematic diagram taken along A-A in

[0025] Figure 3 is Figure 2 a schematic diagram of area B in

[0026] Figure 4 is a schematic diagram of the first conductive member of the conductive assembly according to an embodiment of the present application;

[0027] Figure 5 is a schematic diagram of the third conductive member of the conductive assembly according to an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of the cover plate assembly according to an embodiment of the present application;

[0029] Figure 7 is an exploded view of the cover plate assembly according to an embodiment of the present application.

[0030] Reference numerals:

[0031] 100 - first conductive member, 110 - first welding groove, 111 - first groove portion, 112 - second groove portion, 120 - second welding groove, 130 - limiting groove,

[0032] 200 - second conductive member,

[0033] 300 - The third conductive member, 310 - The first conductive portion, 320 - The second conductive portion,

[0034] 400 - The substrate, 410 - The upper plastic, 420 - The lower plastic, 430 - The sealing ring,

[0035] 500 - The housing,

[0036] 600 - The electrode assembly. Detailed implementation manners

[0037] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0038] In the description of the present application, it should be understood that the terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0040] In the present application, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0042] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] In a battery module, the pole column is a component for electrically connecting the battery module to an external structural member. Inside the battery module, the pole column is electrically connected to the tab of the electrode assembly through a connecting piece. In order to make the electrical connection effect between the pole column and the connecting piece reliable, the pole column and the connecting piece can be connected by penetration welding. Moreover, in order to facilitate the welding of the pole column and the connecting piece, a welding groove structure can be provided on the pole column to make the welding of the pole column and the connecting piece more convenient.

[0044] Currently, in order to ensure that the pole column has good overcurrent capacity and reliable electrical connection with the external structural member in the battery module, the welding groove on the pole column should not be opened too large. However, this also results in a narrow welding space between the pole column and the connecting piece, making it inconvenient to weld the pole column and the connecting piece.

[0045] In the conductive assembly proposed in this application, a first conductive member is provided with a first welding groove, which can reduce the thickness of the portion of the first conductive member corresponding to the first welding groove. A second conductive member is located on the side of the first conductive member facing away from the first welding groove, and its orthographic projection on the first conductive member is located within the first welding groove, so that the second conductive member can be opposite the first welding groove and there is a small gap between the second conductive member and the bottom wall of the first welding groove. In this way, when the second conductive member and the first conductive member are connected by penetration welding, the bottom wall of the first welding groove can penetrate the first conductive member to weld the first conductive member to the second conductive member, thereby reducing the difficulty of the penetration welding process. The second conductive member can be used to connect to the tab of the electrode assembly. The first conductive member facing away from the second conductive member, that is, the side of the first conductive member located at the notch of the first welding groove, can be used to connect to an external connector such as a busbar. A third conductive member is embedded in the first welding groove, so that the third conductive member can be filled in the first welding groove. In this way, the third conductive member can support the first conductive member within the first welding groove, giving the first conductive member a better structure. The side of the third conductive part facing away from the second conductive part is flush with the notch of the first welding groove, so that the end face of the first conductive part outside the first welding groove and the side of the third conductive part facing away from the second conductive part can both contact the bus, thereby increasing the contact area between the conductive component and the bus and enhancing the current carrying capacity of the conductive component.

[0046] In addition, since the third conductive member can fill the first welding groove to make the conductive component have better current carrying capacity, the size of the first welding groove can be set relatively larger, thereby making the welding space between the first conductive member and the second conductive member larger, which can further facilitate the connection of the first conductive member and the second conductive member through penetration welding.

[0047] In the cover plate assembly proposed in the present application, since it includes the above-mentioned conductive assembly, the cover plate assembly also has good current flow capacity, and the difficulty of the cover plate assembly preparation process is reduced.

[0048] The battery proposed in this application includes the above-mentioned cover plate assembly, so that the battery has better energy release performance and the difficulty of the preparation process is reduced.

[0049] The conductive assembly, cover assembly and battery provided in this application are described in detail below with reference to specific embodiments.

[0050] This application proposes a conductive component, referring to Figures 1 to 3 As shown, it includes a first conductive member 100, a second conductive member 200 and a third conductive member 300. The conductive assembly can be applied to a cap assembly, and the cap assembly can be applied to a battery. The conductive assembly can be used to connect the electrode assembly 600 of the battery and receive the busbar.

[0051] Among them, the first conductive member 100 is the basic component of the conductive assembly of the present application. The first conductive member 100 can provide an installation basis for at least some other components of the conductive assembly and serve the purpose of protecting at least some other components. The first conductive member 100 can be prepared from a metal material, so that the first conductive member 100 can conduct electricity and has better structural strength, so that the durability and reliability of the first conductive member 100 are better.

[0052] The first conductive member 100 is provided with a first welding groove 110. The notch of the first welding groove 110 is located on the surface of the first conductive member 100. Thus, the thickness dimension of the part of the first conductive member 100 where the first welding groove 110 is opened can be made thinner than the thickness dimension of other parts of the first conductive member 100, that is, the distance from the bottom wall of the first welding groove 110 to the side of the first conductive member 100 facing away from the bottom wall of the first welding groove 110 is smaller. The second conductive member 200 is connected to the first conductive member 100. Specifically, the second conductive member 200 is welded to the side of the first conductive member 100 facing away from the notch of the first welding groove 110, and the orthographic projection formed by the second conductive member 200 on the first conductive member 100 is located within the first welding groove 110, so that the second conductive member 200 can be opposite to the first welding groove 110, so that the distance between the second conductive member 200 and the bottom wall of the first welding groove 110 is smaller.

[0053] When preparing the conductive assembly of the present application, after the first conductive member 100 and the second conductive member 200 are prepared, the first conductive member 100 and the second conductive member 200 can be connected by a penetration welding process. Specifically, the welding torch can extend into the first welding groove 110 and penetrate the bottom wall of the first welding groove 110 to weld and connect the first conductive member 100 and the second conductive member 200. Since the distance between the bottom wall of the first welding groove 110 of the first conductive member 100 and the side of the first conductive member 100 facing away from the first welding groove 110 is small, the thickness dimension of the part of the first conductive member 100 that needs to be penetrated when the first conductive member 100 and the second conductive member 200 are connected by penetration welding can be reduced, so that the process of connecting the first conductive member 100 and the second conductive member 200 by penetration welding is relatively simpler, thereby reducing the manufacturing process difficulty of the conductive assembly of the present application.

[0054] When the conductive component of the present application is applied to a battery, the second conductive member 200 can be used for electrically connecting with the electrode assembly 600 of the battery. The side of the first conductive member 100 facing away from the second conductive member 200, that is, the side of the first conductive member 100 located at the notch of the first welding groove 110, can be used for connecting with an external connecting member such as a bus bar. The third conductive member 300 is embedded in the first welding groove 110, so that the third conductive member 300 can be electrically connected with the first conductive member 100, and the third conductive member 300 can also support the first conductive member 100 in the first welding groove 110, so that the structural strength of the first conductive member 100 can be improved, thereby making the structural strength of the conductive component of the present application higher. One side of the third conductive member 300 is flush with the notch of the first welding groove 110. In this way, when the bus bar is in contact connection with the side of the first conductive member 100 where the first welding groove 110 is opened, the bus bar can also be in contact with the part of the third conductive member 300 that is flush with the notch of the first welding groove 110. Thus, the bus bar can be in contact with both the first conductive member 100 and the second conductive member 200 at the same time, thereby increasing the total contact area between the bus bar and the conductive component for electrical connection, improving the current-carrying capacity of the conductive component, and enabling the current to be transmitted between the bus bar and the conductive component more efficiently.

[0055] In addition, when preparing the conductive component of the present application, the first conductive member 100 and the second conductive member 200 can be connected first by penetration welding, and then the third conductive member 300 can be embedded in the first welding groove 110. Therefore, the size of the first welding groove 110 of the first conductive member 100 can be set relatively larger, so that the welding space when the first conductive member 100 and the second conductive member 200 are welded is larger, facilitating the welding of the first conductive member 100 and the second conductive member 200. The third conductive member 300 is embedded in the first welding groove 110, so that when the size of the first welding groove 110 is set relatively large, the conductive component and the bus bar still have sufficient contact area, so that the conductive component still has good current-carrying capacity.

[0056] In some embodiments, referring to Figure 4 and Figure 5As shown, to ensure a more stable and reliable installation of the third conductive member 300 within the first welding groove 110 of the first conductive member 100, the first welding groove 110 can include a first groove portion 111 and a second groove portion 112. The first groove portion 111 is connected to the second groove portion 112, and the inner diameter of the first groove portion 111 is smaller than the inner diameter of the second groove portion 112. This allows a step structure to be formed between the first groove portion 111 and the second groove portion 112. When the third conductive member 300 is embedded in the first welding groove 110, the outer wall of the third conductive member 300 contacts the inner walls of both the first groove portion 111 and the second groove portion 112. Specifically, the third conductive member 300 may include a first conductive portion 310 and a second conductive portion 320 connected to each other. The outer diameter of the first conductive portion 310 is smaller than the outer diameter of the second conductive portion 320, and the outer diameter of the first conductive portion 310 may be configured to match the inner diameter of the first groove portion 111, so that the first conductive portion 310 can be embedded in the first groove portion 111. The outer diameter of the second conductive portion 320 may be configured to match the inner diameter of the second groove portion 112, so that the second conductive portion 320 can be embedded in the second groove portion 112. Accordingly, a step structure is also provided between the first conductive portion 310 and the second conductive portion 320, and this step structure corresponds to the step structure in the first welding groove 110. In this way, the step structure in the first welding groove 110 and the step structure on the surface of the third conductive member 300 can interlock and limit each other, allowing the third conductive member 300 to be more stably and reliably embedded in the first welding groove 110.

[0057] In some embodiments, reference Figure 3 and Figure 4 As shown, to facilitate the embedding of the third conductive member 300 within the first welding groove 110, the second groove portion 112 of the first welding groove 110 is connected to the end of the first groove portion 111 facing away from the second conductive member 200, and the notch of the first welding groove 110 is located on the side of the second groove portion 112 facing away from the first groove portion 111. As a result, the first groove portion 111 is closer to the second conductive member 200 than the second groove portion 112. The bottom wall of the first welding groove 110 is located within the first groove portion 111, and the notch of the first welding groove 110 is located in the second groove portion 112. As a result, the inner diameter of the first welding groove 110 can decrease in the direction from the first conductive member 100 to the second conductive member 200. When assembling the third conductive member 300, the first conductive portion 310 of the third conductive member 300 can be directed toward the first welding groove 110, and the third conductive member 300 can be moved into the first welding groove 110, so that the third conductive member 300 can be embedded in the first welding groove 110, thereby making it easier to assemble the third conductive member 300 and the first conductive member 100.

[0058] In some embodiments, reference Figure 3As shown, a gap may be provided between the third conductive member 300 of the present application and the bottom wall of the first welding groove 110. Specifically, there is a gap between the side of the third conductive member 300 facing the bottom wall of the first welding groove 110 and the bottom wall of the first welding groove 110. This can prevent the third conductive member 300 from completely filling the first welding groove 110, reduce the material consumption of the third conductive member 300, lower the manufacturing cost of the third conductive member 300, and thus reduce the manufacturing cost of the conductive component of the present application. In addition, the overall weight of the conductive component can be reduced, and the weight of the battery using the conductive component can also be reduced.

[0059] In some embodiments, referring to Figure 3 As shown, in order to further facilitate the connection between the first conductive member 100 and the second conductive member 200 by the penetration welding process, a second welding groove 120 may be formed on the first conductive member 100. The second welding groove 120 and the first welding groove 110 are located on opposite sides of the first conductive member 100. At least a part of the second conductive member 200 is located in the second welding groove 120. Therefore, the first welding groove 110 and the second welding groove 120 can be opposite to each other, and the distance between the bottom walls of the first welding groove 110 and the second welding groove 120 is relatively the smallest, that is, the part of the first conductive member 100 between the first welding groove 110 and the second welding groove 120 is the thinnest part of the first conductive member 100 in terms of thickness dimension. The side of the second conductive member 200 facing the first conductive member 100 may be in contact with the bottom wall of the second welding groove 120. In this way, when connecting the first conductive member 100 and the second conductive member 200 by the penetration welding process, the part of the first conductive member 100 that needs to be penetrated is the thinnest part of the first conductive member 100, which can reduce the process difficulty of connecting the first conductive member 100 and the second conductive member 200 by penetration welding.

[0060] In some embodiments, referring to Figure 3 As shown, there is a gap between the side wall of the second conductive member 200 and the side wall of the second welding groove 120 in the present application, so that the second conductive member 200 does not completely fill the second welding groove 120. Specifically, the inner diameter of the second welding groove 120 may be set to be larger than the outer diameter of the part of the second conductive member 200 located in the second welding groove 120. This can reduce the material consumption of the second conductive member 200, lower the manufacturing cost of the second conductive member 200, and thus reduce the manufacturing cost of the conductive component of the present application. In addition, the inner diameter of the second welding groove 120 is set to be relatively larger than the outer diameter of the second conductive member 200, which can make it more convenient for the second conductive member 200 to be inserted into the second welding groove 120 and abut against the inner wall of the second welding groove 120, making the preparation and assembly of the conductive component of the present application simpler and more convenient.

[0061] In some embodiments, referring to Figure 3As shown, the central axis of the first welding groove 110 and the central axis of the second welding groove 120 of the first conductive member 100 of the present application can be set to be coaxial, so that the first welding groove 110 and the second welding groove 120 can be fully opposite to each other.

[0062] Based on the conductive components above, refer to Figure 3 、 Figure 6 and Figure 7 As shown, the embodiment of the present application further provides a cover plate assembly, comprising a substrate 400 and the above conductive assembly. The cover plate assembly can be applied to a battery and disposed on one side of the top of the battery.

[0063] The first conductive member 100 is disposed through the substrate 400 , and one side of the notch of the first welding groove 110 on the first conductive member 100 protrudes out of the substrate 400 , which facilitates the connection between the first conductive member 100 and the busbar.

[0064] In some embodiments, reference Figure 3 、 Figure 6 and Figure 7 As shown, the cover assembly may further include an upper plastic 410, a lower plastic 420, and a sealing ring 430. The upper plastic 410 and the lower plastic 420 are located on opposite sides of the substrate 400. The upper plastic 410 may be configured to be sleeved on the first conductive member 100 and located between the first conductive member 100 and the substrate 400. The lower plastic 420 is also sleeved on the first conductive member 100 and located between the substrate 400 and the first conductive member 100. This prevents the first conductive member 100 from contacting the substrate 400 and causing a short circuit. The sealing ring 430 is also sleeved on the first conductive member 100 and located between the substrate 400 and the first conductive member 100, thereby ensuring the sealing between the substrate 400 and the first conductive member 100.

[0065] In some embodiments, reference Figure 4 As shown, a limiting groove 130 is further provided on the outer periphery of the first conductive member 400. When the first conductive member 400 is passed through the substrate 400, part of the substrate 400 can be embedded in the limiting groove 130, so that the fixed connection effect between the substrate 400 and the first conductive member 400 is more stable and reliable.

[0066] Based on the cover assembly above, refer to Figure 1 and Figure 2As shown, an embodiment of the present application further provides a battery, including a housing 500, an electrode assembly 600, and the above-mentioned cover plate assembly. Among them, the housing 500 is provided with a cavity and an opening communicating with the cavity. The electrode assembly 600 can be disposed in the cavity of the housing 500, and the cover plate assembly can be disposed at the opening of the housing 500 to block the opening, so that the electrode assembly 600 is blocked in the housing 500 to protect the electrode assembly 600. Specifically, the substrate 400 can be set to match the opening of the housing 500, and the substrate 400 can be welded to the housing 500 so that the substrate 400 blocks the opening of the housing 500, and the second conductive member 200 is electrically connected to the electrode assembly 600.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A conductive component, characterized in that, Comprising: A first conductive member (100) having a first welding groove (110) formed therein; A second conductive member (200) welded and connected to a side of the first conductive member (100) facing away from the notch of the first welding groove (110), and a positive projection of the second conductive member (200) formed on the first conductive member (100) is located within the first welding groove (110); A third conductive member (300) embedded within the first welding groove (110), and a side of the third conductive member (300) facing away from the bottom wall of the first welding groove (110) is flush with the notch of the first welding groove (110).

2. The conductive component according to claim 1, wherein, The first welding groove (110) includes a connected first groove portion (111) and second groove portion (112), an inner diameter of the first groove portion (111) is smaller than an inner diameter of the second groove portion (112), and an outer wall of the third conductive member (300) is in contact with both an inner side wall of the first groove portion (111) and an inner side wall of the second groove portion (112).

3. The conductive component according to claim 2, wherein The second groove portion (112) is connected to an end of the first groove portion (111) facing away from the second conductive member (200), and a notch of the first welding groove (110) is located at an end of the second groove portion (112) facing away from the first groove portion (111).

4. The conductive component according to claim 1, characterized in that, The third conductive member (300) has a gap with the bottom wall of the first welding groove (110).

5. The conductive component according to any one of claims 1-4, characterized in that, The first conductive member (100) further has a second welding groove (120) formed therein, the second welding groove (120) and the first welding groove (110) are located on opposite sides of the first conductive member (100), and at least a part of the second conductive member (200) is located within the second welding groove (120).

6. The conductive component according to claim 5, wherein A side wall of the second conductive member (200) has a gap with a side wall of the second welding groove (120).

7. The conductive component according to claim 6, characterized in that, A central axis of the first welding groove (110) is coaxial with a central axis of the second welding groove (120).

8. A cover plate assembly, characterized in that, Comprising a substrate (400) and a conductive assembly according to any one of claims 1-7, the first conductive member (100) penetrates through the substrate (400), and a notch of the first welding groove (110) is located outside the substrate (400).

9. The cover plate assembly according to claim 8, wherein, A limiting groove (130) is formed on an outer periphery of the first conductive member (100), and at least a part of the substrate (400) is located within the limiting groove (130).

10. A battery, characterized in that, Comprising a housing (500), an electrode assembly (600) and a cover plate assembly according to claim 9, the housing (500) has a cavity and an opening communicating with the cavity, the electrode assembly (600) is disposed within the cavity, the substrate (400) seals the opening, and the second conductive member (200) is electrically connected to the electrode assembly (600).

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