Battery cover plate and battery

Abstract

The utility model relates to power battery technical field provides a kind of battery cover plate and battery.The battery cover plate includes cover plate main body, and the cover plate main body is equipped with protruding structure, and protruding structure has the contact surface with heat exchange element contact;Cover plate main body is equipped with outer edge along circumference, and outer edge includes two first side edges oppositely arranged along first direction and two second side edges oppositely arranged along second direction, and first side edge and / or second side edge are equipped with abutting portion, and abutting portion is butted in the port of battery shell in assembly state.The battery cover plate provided by the utility model can contact the contact surface of protruding structure with heat exchange element, provide supporting and fixing effect to battery while realizing heat exchange, improve the stability of battery monomer in battery pack and improve the overall structural strength of battery pack.At the same time, most of the force can be carried by the abutting portion and the abutting portion of the shell port, which can effectively avoid the problems of weld deformation or failure caused by weld alone bearing force.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery cover and a battery. Background Technology

[0002] A power battery is a rechargeable battery used to power devices such as electric vehicles, primarily by storing and releasing electrical energy to drive an electric motor.

[0003] In existing technologies, the highest point of a single battery cell is typically located on the terminal post of the cover plate. To ensure sufficient safety performance, battery cells are generally protected from excessive external forces within the battery pack, a design that helps prevent damage to the internal structure of the battery. However, this design also results in lower overall strength of the battery pack, potentially affecting its stability and safety under external impacts or pressure. Utility Model Content

[0004] This utility model provides a battery cover and a battery to solve the defects in the prior art where the overall strength of the battery pack is low, which may affect its stability and safety when subjected to external impact or pressure.

[0005] This utility model provides a battery cover, comprising: a cover body, wherein the cover body has a protruding structure, the protruding structure having a contact surface for contacting a heat exchange component; the cover body has an outer edge along the circumferential direction, the outer edge including two first side edges arranged opposite to each other along a first direction and two second side edges arranged opposite to each other along a second direction, the first side edges and / or the second side edges having abutting portions, and in the assembled state, the abutting portions abut against the port of the battery casing.

[0006] According to the battery cover provided by this utility model, the length of the first side edge is greater than the length of the second side edge, and the first side edge is provided with the abutting portion.

[0007] According to the battery cover provided by this utility model, both the first side edge and the second side edge are provided with the abutting portion.

[0008] According to the battery cover provided by this utility model, the first side edge and / or the second side edge are provided with a protruding edge, and the abutting part is formed on the side of the protruding edge facing the port of the housing.

[0009] According to the battery cover provided by this utility model, the protruding structure is integrally formed with the cover body.

[0010] According to the battery cover provided by this utility model, the cover body has a receiving groove formed on the inner side of the protruding structure, which can be used to accommodate the connecting piece, and the connecting piece is used to connect the terminal post.

[0011] According to the battery cover provided by this utility model, the main body of the cover is provided with a plurality of protruding structures spaced apart along a first direction.

[0012] According to the battery cover provided by this utility model, a plurality of the protruding structures are evenly distributed along a first direction on the cover body.

[0013] The battery cover provided by this utility model further includes: an explosion-proof valve, wherein the explosion-proof valve is provided between at least a portion of the adjacent protruding structures.

[0014] Another aspect of this utility model provides a battery, comprising: a casing, an electrode assembly, a battery cover, and terminal posts.

[0015] The electrode assembly is disposed within the housing; the battery cover is disposed within the housing, and the abutting portion abuts against the port of the housing; the electrode post is disposed within the cover body, and the distance between the end face of the electrode post and the port of the housing is less than the distance between the contact surface and the port of the housing.

[0016] The battery cover and battery provided by this utility model, by setting a protruding structure on the main body of the cover, can make contact with the heat exchange components (such as water-cooling plates) through the contact surface of the protruding structure. While realizing heat exchange, it also provides support and fixation for the battery (cell), improving the stability of the battery cell in the battery pack and improving the overall structural strength of the battery pack. At the same time, since the contact surface of the protruding structure applies a vertical force to the cover when in contact with the heat exchange components, by setting an abutment part on the outer edge (first side edge and / or second side edge) of the main body of the cover, and abutting with the port of the shell during assembly, most of the force can be borne by the abutment part, which can effectively avoid problems such as weld deformation or failure caused by the weld bearing the force alone.

[0017] 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

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the schematic diagrams of the battery cover provided in this embodiment of the utility model.

[0020] Figure 2 This is the second schematic diagram of the battery cover provided in this embodiment of the utility model.

[0021] Figure 3 This is a cross-sectional view of the battery cover provided in an embodiment of this utility model.

[0022] Figure 4 This is one of the schematic diagrams of the battery provided in this embodiment of the utility model.

[0023] Figure 5 This is one of the cross-sectional views of the battery provided in this embodiment of the utility model.

[0024] Figure 6 This is a second cross-sectional view of the battery provided in this embodiment of the utility model.

[0025] Figure 7 yes Figure 6 A magnified view of part A in the diagram.

[0026] Figure label: 100. Battery cover; 110. Cover body; 111. Outer edge; 1111. Abutting part; 120. Protruding structure; 121. Contact surface; 122. Receiving groove; 130. Explosion-proof valve; 140. Terminal post; 200. Housing; 300. Terminal group; 400. Connecting piece. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0030] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The following is combined Figures 1 to 7 This invention describes the battery cover and battery provided by this utility model.

[0033] See Figures 1 to 7 As shown, the battery cover 100 provided in this embodiment of the present invention includes: a cover body 110, a protruding structure 120 on the cover body 110, the protruding structure 120 having a contact surface 121 for contacting a heat exchange component; the cover body 110 has an outer edge 111 along the circumferential direction, the outer edge 111 includes two first side edges arranged opposite to each other along a first direction and two second side edges arranged opposite to each other along a second direction, the first side edges and / or the second side edges are provided with abutting portions 1111, and in the assembled state, the abutting portions 1111 abut against the port of the battery housing 200.

[0034] It should be noted that the first and second directions referred to in the embodiments of this utility model can both refer to... Figure 1 The arrows shown in the diagram indicate the direction of the cover body 110. The first direction can be understood as the length direction of the cover body 110, and the second direction can be understood as the width direction of the cover body 110.

[0035] The battery cover 100 and battery provided by this utility model, by providing a protruding structure 120 on the cover body 110, can utilize the contact surface 121 of the protruding structure 120 to contact the heat exchange component (such as a water-cooling plate), thereby achieving heat exchange while providing support and fixation for the battery (cell), improving the stability of the battery cell within the battery pack and enhancing the overall structural strength of the battery pack. Simultaneously, since the contact surface 121 of the protruding structure 120 exerts a vertical force on the cover through contact with the heat exchange component, by providing an abutment portion 1111 on the outer edge 111 (first side edge and / or second side edge) of the cover body 110, which abuts against the port of the housing 200 during assembly, most of the force can be borne by the abutment portion, effectively avoiding problems such as weld deformation or failure caused by the weld bearing the force alone.

[0036] Specifically, the protruding structure 120 on the cover body 110 can be implemented in various ways. For example, the protruding structure 120 can be an independent structure / component, fixedly connected to the cover body 110 by welding or other methods. This approach allows for more flexible design and manufacturing of the protruding structure 120, enabling the selection of different materials, shapes, or sizes according to actual needs. It can also be manufactured, tested, and replaced individually, facilitating optimization and maintenance. Alternatively, the protruding structure 120 can be integrally formed with the cover body 110, meaning it is designed as part of the cover during the manufacturing process. This reduces assembly steps, improves production efficiency, and eliminates the need for additional connectors, thus reducing potential connection strength issues and enhancing the integrity and stability of the cover body 110.

[0037] The cover body 110 has an outer edge 111 along its circumference. The outer edge 111 includes two first side edges arranged opposite each other along a first direction and two second side edges arranged opposite each other along a second direction. The first side edges and / or the second side edges are provided with abutment portions 1111, and in the assembled state, the abutment portions 1111 abut against the ports of the battery housing 200. It is understood that the abutment portions 1111 may be provided only on the two opposite first side edges or the two opposite second side edges, or the abutment portions 1111 may be provided on both the two opposite first side edges and the two opposite second side edges. In specific implementation, the selection can be based on the actual structure and load requirements of the battery cover 100, and no special limitation is made therein.

[0038] The contact portion 1111 can adopt various structural forms, and the specific choice depends on the usage requirements and assembly process of the battery cover 100, and there are no special limitations on it. For example, a raised edge type, etc.

[0039] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the length of the first side edge is greater than the length of the second side edge, and the first side edge is provided with an abutment portion 1111.

[0040] By providing the abutment portion 1111 on the longer of the first and second side edges, the contact support force between the battery cover 100 and the port of the housing 200 can be fully guaranteed, thereby improving structural stability.

[0041] Specifically, since the length of the first side edge is greater than the length of the second side edge, by providing the abutment portion 1111 on the first side edge, the abutment contact area 121 can be increased to a greater extent, thereby providing stronger and more stable support. It can also effectively disperse the support force and reduce local stress concentration.

[0042] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, both the first side edge and the second side edge are provided with an abutment portion 1111.

[0043] By providing abutment portions 1111 on both the first and second side edges, the contact support force between the battery cover 100 and the port of the housing 200 can be further enhanced, thereby improving structural stability.

[0044] Specifically, since both the first and second side edges are provided with abutment portions 1111, they can simultaneously abut and cooperate with the ports of the housing 200, thereby achieving a more uniform distribution of support force, thereby improving the contact support force between the battery cover 100 and the ports of the housing 200 and enhancing structural stability.

[0045] See Figure 1 , Figure 2 as well as Figure 7 As shown, according to some embodiments of the present invention, the first side edge and / or the second side edge are provided with a protruding edge, and the protruding edge forms an abutment portion 1111 on the side facing the port of the housing 200.

[0046] By setting the abutment portion 1111 as a raised edge structure, strong support performance can be provided. Moreover, the raised edge structure is simple and easy to process and manufacture.

[0047] Specifically, in the assembled state, the side of the flange facing the port of the housing 200 (i.e., the inner surface of the flange) contacts the port of the housing 200, which can significantly increase the contact area 121, thereby providing stronger support performance.

[0048] See Figures 1 to 3 As shown, according to some embodiments of the present invention, the protruding structure 120 is integrally formed with the cover plate body 110.

[0049] By integrating the protruding structure 120 with the cover body 110, the structure of the cover body 110 can be simplified, and the integrity and compactness of the cover body 110 can be improved.

[0050] At the same time, it can simplify the processing and manufacturing process of the cover body 110. For example, during the stamping of the cover body 110, the protruding structure 120 can be formed together with the cover body 110 in one die process, making the manufacturing process of the entire cover body 110 structure more efficient and reducing the complexity of subsequent processing and assembly. In addition, through precise die design, the accuracy of the position and size of the protruding structure 120 can be ensured, guaranteeing the consistency of the final product quality.

[0051] See Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, the cover plate body 110 has a receiving groove 122 formed on the inner side of the protrusion structure 120, which can be used to accommodate the connecting piece 400, and the connecting piece 400 is used to connect the pole post 140.

[0052] By forming a receiving groove 122 on the inner side of the corresponding protrusion 120 in the cover body 110, the connecting piece 400 can be accommodated in the receiving groove 122, avoiding the connecting piece 400 occupying additional space inside the housing 200, thereby improving the space utilization rate of the battery. It should be noted that the connecting piece 400 is an electrical connector used to connect the electrode group 300 and the terminal post 140.

[0053] Of course, in addition to the connecting piece 400, the depth and dimensions of the receiving groove 122 can also be used to accommodate other components / structures within the battery casing 200, without any special limitations.

[0054] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the cover plate body 110 is provided with a plurality of protruding structures 120 spaced apart along the first direction.

[0055] By providing multiple protruding structures 120 at intervals along the first direction on the cover plate body 110, the supporting force can be distributed, thereby improving the overall compressive strength and stability of the cover plate.

[0056] It should be noted that the multiple protruding structures 120 can be adaptively arranged according to the specific configuration of the components (such as the pole post 140, the explosion-proof valve 130, etc.) on the cover plate body 110. For example, the multiple protruding structures 120 can be evenly spaced along the first direction, that is, each protruding structure 120 has the same size and specifications, and the spacing between adjacent protruding structures 120 is the same; or the protruding structures 120 can be non-uniformly spaced along the first direction, that is, at least some of the protruding structures 120 have different sizes and / or specifications, and / or, at least some of the adjacent protruding structures 120 have different spacing.

[0057] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, a plurality of protruding structures 120 are evenly distributed along the first direction on the cover plate body 110.

[0058] By evenly distributing multiple protruding structures 120 along the first direction on the cover body 110, the supporting force can be distributed more evenly, ensuring that the stress on each area of ​​the battery cover 100 is consistent during use, thereby enhancing the overall stability and compressive strength of the cover.

[0059] As an example, in this embodiment, the cover plate body 110 is provided with two protruding structures 120, which are symmetrically arranged on both sides of the cover plate body 110 along the first direction.

[0060] In some embodiments, if the cover body 110 is larger in the second direction (i.e., the cover body 110 is wider), a plurality of protrusions 120 may be provided at intervals along the second direction of the cover body 110.

[0061] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the battery cover 100 also includes an explosion-proof valve 130, and an explosion-proof valve 130 is provided between at least some of the adjacent protruding structures 120.

[0062] By incorporating the explosion-proof valve 130, pressure changes within the battery can be effectively controlled, preventing the cover or battery structure from rupturing or exploding due to excessive internal pressure. Furthermore, the explosion-proof valve 130 is positioned between adjacent protruding structures 120, ensuring it does not interfere with these structures and can be activated normally when needed, unaffected by other structures.

[0063] The battery provided by this utility model is described below. The battery described below can be referred to in correspondence with the battery cover 100 described above.

[0064] See Figures 4 to 7As shown, the battery provided in this embodiment of the present invention includes: a casing 200, an electrode assembly 300, a battery cover 100, and terminal posts 140.

[0065] The electrode assembly 300 is disposed inside the housing 200; the battery cover 100 is disposed in the housing 200, and the abutment portion 1111 abuts against the port of the housing 200; the terminal post 140 is disposed in the cover body 110, and along the height direction of the battery, the distance between the end face of the terminal post 140 and the port of the housing 200 is less than the distance between the contact surface 121 and the port of the housing 200.

[0066] The battery provided by this utility model, due to the adoption of the aforementioned battery cover plate 100, can also contact the heat exchange component (such as a water-cooling plate) via the contact surface 121 of the protruding structure 120. This achieves heat exchange while simultaneously providing support and fixation for the battery (cell), improving the stability of the battery cell within the battery pack and enhancing the overall structural strength of the battery pack. Furthermore, since the contact surface 121 of the protruding structure 120 exerts a vertical force on the cover plate upon contact with the heat exchange component, the abutment portion 1111 is provided on the outer edge 111 (first side edge and / or second side edge) of the cover plate body 110. This abutment portion engages with the port of the housing 200 during assembly, allowing the abutment portion to bear most of the force. This effectively avoids problems such as weld deformation or failure caused by the weld bearing the force alone.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery cover, characterized in that, include: Cover plate body; The cover plate body is provided with a protruding structure, and the protruding structure has a contact surface that contacts the heat exchange element; The cover plate body has an outer edge along the circumferential direction. The outer edge includes two first side edges arranged opposite each other in a first direction and two second side edges arranged opposite each other in a second direction. The first side edges and / or the second side edges are provided with abutting portions, and in the assembled state, the abutting portions abut against the port of the battery casing.

2. The battery cover according to claim 1, characterized in that, The length of the first side edge is greater than the length of the second side edge, and the first side edge is provided with the abutting portion.

3. The battery cover according to claim 1, characterized in that, Both the first side edge and the second side edge are provided with the abutting portion.

4. The battery cover according to claim 1, characterized in that, The first side edge and / or the second side edge are provided with a raised edge, and the abutment portion is formed on the port side of the raised edge facing the housing.

5. The battery cover according to claim 1, characterized in that, The protruding structure is integrally formed with the cover plate body.

6. The battery cover according to claim 5, characterized in that, The cover plate body has a receiving groove formed on the inner side of the protruding structure, which can be used to accommodate the connecting piece, and the connecting piece is used to connect with the pole post.

7. The battery cover according to claim 1, characterized in that, The cover plate body is provided with a plurality of protruding structures spaced apart along the first direction.

8. The battery cover according to claim 7, characterized in that, The plurality of the protruding structures are evenly distributed along the first direction on the cover plate body.

9. The battery cover according to claim 7, characterized in that, Also includes: An explosion-proof valve is provided at least partially between adjacent protruding structures.

10. A battery, characterized in that, include: case; A pole assembly, wherein the pole assembly is disposed within the housing; The battery cover as described in any one of claims 1 to 9, wherein the battery cover is disposed on the housing, and the abutting portion abuts against the port of the housing; The electrode post is disposed on the cover plate body. Along the height direction of the battery, the distance between the end face of the electrode post and the port of the housing is smaller than the distance between the contact surface and the port of the housing.

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