Battery cover plate assembly and battery

Abstract

The utility model relates to a battery cover plate assembly and a battery. The battery cover plate assembly comprises a connecting piece and an insulating piece, the connecting piece and the insulating piece are respectively connected with a pole, and a first positioning structure and a first locking structure are arranged on the side surface, facing the insulating piece, of the connecting piece; the side face, facing the connecting piece, of the insulating piece is provided with a second positioning structure and a second locking structure. The first positioning structure is matched with the second positioning structure and is used for mounting and positioning the connecting piece and the insulating piece; and the first locking structure is matched with the second locking structure and is used for limiting circumferential rotation between the connecting piece and the insulating piece. The battery cover plate assembly can meet the requirements of positioning and rotation prevention between the connecting piece and the insulating piece, and is convenient to assemble.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery cover assembly and a battery. Background Art

[0002] In the cover assembly of lithium-ion batteries, in order to prevent additional electrical connection between the pole and external components, an insulating member is usually provided on the periphery of the pole. Since the poles of most batteries adopt a cylindrical structure, the poles will rotate when affected by external forces.

[0003] In the related art, an anti-rotation structure is provided between the pole and the insulating member to limit the rotation of the pole. However, the anti-rotation structure is mostly provided in the form of small protrusions or grooves, which are difficult to assemble and are easily distorted, thus failing to achieve the purpose of anti-twisting. Utility Model Content

[0004] The purpose of the present disclosure is to provide a battery cover assembly and a battery, wherein the battery cover assembly can meet the positioning and anti-rotation requirements between a connector and an insulating member, so as to at least partially solve the related technical problems.

[0005] In order to achieve the above-mentioned object, the present disclosure provides, in a first aspect, a battery cover assembly, comprising a connecting member and an insulating member;

[0006] The connecting member and the insulating member are respectively used to be connected to the pole, and the side of the connecting member facing the insulating member is provided with a first positioning structure and a first locking structure;

[0007] The side of the insulating member facing the connecting member is provided with a second positioning structure and a second locking structure;

[0008] The first positioning structure cooperates with the second positioning structure to install and position the connecting member and the insulating member;

[0009] The first locking structure cooperates with the second locking structure to limit the circumferential rotation between the connecting member and the insulating member.

[0010] Optionally, the connecting member includes a main body, and the first positioning structure is configured as a protruding structure on a side of the main body facing the insulating member in a thickness direction thereof and facing the insulating member;

[0011] The second positioning structure is configured as a groove formed by the insulating member being recessed in a thickness direction of the insulating member toward a side surface of the connecting member away from the connecting member, and the second positioning structure is used to accommodate the first positioning structure.

[0012] Optionally, a step structure is formed in the recess, the step structure separates the groove into a first groove and a second groove connected to the first groove, and the diameter of the second groove is greater than the diameter of the first groove;

[0013] The first groove is used to accommodate the protruding structure, and the second groove is used to install the main body.

[0014] Optionally, the step structure includes a limiting portion, the limiting portion extends toward the center direction of the insulating member; the limiting portion forms the second locking structure;

[0015] The protrusion structure includes a notch portion, the notch portion is recessed in a direction away from the insulating member, and the notch portion forms the first locking structure.

[0016] Optionally, the first groove and the second groove are coaxially arranged.

[0017] Optionally, there are multiple notch portions and multiple limiting portions, and they correspond one to one.

[0018] Optionally, the step structure includes a step body, and the limiting portion is provided on an inner side wall of the step body;

[0019] The notch portion extends from the circumferential edge of the protruding structure toward the center of the protruding structure.

[0020] Optionally, a distance between an inner side wall of the limiting portion and a side wall of the second groove is greater than 0.6 mm; and / or

[0021] The inner side wall of the limiting portion is a plane, and an angle between the plane and a tangent line at a junction of the limiting portion and the first groove is greater than 90°.

[0022] Optionally, the battery cover plate assembly further comprises a cover plate, the cover plate is sleeved on the pole and located on a side of the insulating member away from the connecting member, and the cover plate is provided with a third locking structure;

[0023] The insulating member is provided with a fourth locking structure, and the fourth locking structure cooperates with the third locking structure to limit the circumferential rotation between the insulating member and the cover plate.

[0024] Optionally, a side of the cover plate in the thickness direction facing the insulating member is provided with a recessed portion for at least partially accommodating the insulating member, and the fourth locking structure includes a groove portion formed on a circumferential side wall of the recessed portion;

[0025] The third locking structure includes a protrusion which is arranged in the circumference of the insulating member and corresponds to the second groove.

[0026] Optionally, there are multiple groove portions and multiple protrusion portions, and they correspond one to one.

[0027] Optionally, the battery cover assembly further comprises a pole, a brake frame and a seal sleeved on the pole;

[0028] The brake frame is located on a side of the cover plate away from the insulating member;

[0029] The sealing member is sealingly connected to the gap between the brake frame, the cover plate and the pole.

[0030] According to a second aspect of the present disclosure, a battery is further provided, comprising a battery cell and the battery cover assembly provided in the first aspect of the present disclosure.

[0031] Through the above technical solution, that is, the battery cover assembly disclosed in the present invention, by setting a first positioning structure and a first locking structure on the side of the connecting member facing the insulating member, and setting a second positioning structure cooperating with the first positioning structure and a second locking structure cooperating with the first locking structure on the insulating member, the first locking structure and the second locking structure can prevent the rotation between the connecting member and the insulating member. At the same time, the first positioning structure and the second positioning structure are used to realize the installation positioning between the connecting member and the insulating member, which is convenient for assembly.

[0032] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0034] Figure 1 is a side view of a battery cover assembly provided in some embodiments of the present disclosure.

[0035] Figure 2 is a top view of a battery cover assembly provided in some embodiments of the present disclosure.

[0036] Figure 3 is based on Figure 2 AA section view in.

[0037] Figure 4 It is an exploded view from a first perspective of a battery cover assembly provided in some embodiments of the present disclosure.

[0038] Figure 5 It is an exploded view from a second perspective of the battery cover assembly provided in some embodiments of the present disclosure.

[0039] Figure 6is a structural diagram of the connector of the battery cover assembly provided in some embodiments of the present disclosure.

[0040] Figure 7 is a top view of the insulating member of the battery cover assembly provided in some embodiments of the present disclosure.

[0041] Figure 8 is based on Figure 7 BB section view in.

[0042] Fig. 9 This is a structural diagram of the insulating component of the battery cover assembly provided in some embodiments of the present disclosure from another perspective.

[0043] Fig.10 is a top view of the cover plate of the battery cover plate assembly provided in some embodiments of the present disclosure.

[0044] Fig.11 This is a structural diagram of the cover plate of the battery cover plate assembly provided in some embodiments of the present disclosure from another perspective.

[0045] Fig.12 1 is a structural diagram of a battery provided in some embodiments of the present disclosure.

[0046] Fig.13 2 is an exploded view of a battery provided in some embodiments of the present disclosure.

[0047] Description of Reference Numerals

[0048] 10-battery; 100-battery cover assembly; 110-pole; 120-connector; 120a-first positioning structure; 120b-first locking structure; 120c-body; 121-protrusion structure; 122-notch; 130-insulating member; 130a-second positioning structure; 130b-second locking structure; 130c-fourth locking structure; 131-groove; 1311-first groove; 1312-second groove; 132-step Structure; 1321-limiting part; 1322-step body; 133-protrusion; 140-cover plate; 140a-third locking structure; 141-recessed part; 142-groove part; 143-circumferential locking protrusion; 150-brake frame; 160-seal; 170-negative current collector; 200-battery cell; 210-housing; 220-insulating film; 300-positive cover plate assembly; 310-positive current collector; 320-bottom plate; 330-explosion-proof valve. DETAILED DESCRIPTION

[0049] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0050] In the present disclosure, unless otherwise specified, directional words such as "up, down, left, right" generally refer to up, down, left, right relative to the accompanying drawings; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the corresponding structure or the corresponding component being far away from or close to another structure or component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0051] Most battery poles are cylindrical in structure, and the poles will rotate when affected by external forces. Due to the limited strength of the insulating parts, the insulating parts are also driven to rotate and change position due to the rotation of the poles, resulting in gaps between the poles and the upper insulating parts, or between the upper insulating parts and the cover plate, which causes the sealing of the battery top cover to deteriorate, posing a safety hazard. In the related art, an anti-rotation structure is provided between the poles and the insulating parts to limit the rotation of the poles, but the anti-rotation structures are mostly provided in the form of small protrusions or grooves, which are difficult to assemble. During assembly on the production line, it is necessary to identify the positions of multiple anti-rotation structures, and then adjust the relative positions between the poles and the insulating parts to accurately install them. Even so, the final product is still easy to be installed crooked, and the purpose of anti-twisting cannot be achieved.

[0052] The purpose of the present disclosure is to provide a battery cover assembly 100 and a battery, wherein the battery cover assembly 100 can satisfy the positioning and anti-rotation requirements between the connector 120 and the insulating member 130, so as to at least partially solve the related technical problems.

[0053] In order to achieve the above purpose, Figures 1 to 13 As shown, an embodiment of the present disclosure provides a battery cover assembly 100 for a cylindrical battery 10, the battery cover assembly 100 comprising a pole 110, a connector 120 and an insulating member 130; the connector 120 and the insulating member 130 are respectively sleeved on the pole 110, and the side of the connector 120 facing the insulating member 130 is provided with a first positioning structure 120a and a first locking structure 120b; the side of the insulating member 130 facing the connector 120 is provided with a second positioning structure 130a and a second locking structure 130b; the first positioning structure 120a cooperates with the second positioning structure 130a to install and position the connector 120 and the insulating member 130; the first locking structure 120b cooperates with the second locking structure 130b to limit the circumferential rotation between the connector 120 and the insulating member 130.

[0054] Through the above technical solution, that is, the battery cover assembly 100 disclosed in the present invention, by setting a first positioning structure 120a and a first locking structure 120b on the side of the connecting member 120 facing the insulating member 130, and setting a second positioning structure 130a cooperating with the first positioning structure 120a and a second locking structure 130b cooperating with the first locking structure 120b on the insulating member 130, the first locking structure 120b and the second locking structure 130b can prevent the connecting member 120 and the insulating member 130 from rotating. At the same time, the first positioning structure 120a and the second positioning structure 130a are used to realize the installation positioning between the connecting member 120 and the insulating member 130, which is convenient for assembly.

[0055] It should be noted that the connector 120 and the pole 110 can be fixedly connected by welding. In addition, the connector 120 includes but is not limited to aluminum material, and is also used to connect to the external battery 10 busbar or battery 10 connecting piece.

[0056] The first positioning structure 120a and the second positioning structure 130a can be constructed using any suitable structure, such as Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments, the connector 120 includes a main body portion 120c, and the first positioning structure 120a is configured as a protruding structure 121 facing the insulating member 130 on a side of the main body portion 120c facing the insulating member 130 in a thickness direction thereof.

[0057] The second positioning structure 130a is configured as a groove 131 formed by the insulating member 130 being recessed in a thickness direction of the insulating member 130 toward a side surface of the connecting member 120 away from the connecting member 120 . The second positioning structure 130a is used to accommodate the first positioning structure 120a .

[0058] Among them, the protrusion structure 121 can be a circular protrusion facing the side of the insulating member 130 in the thickness direction of the connecting member 120, and the circular protrusion can be coaxially arranged with the connecting member 120, or can be non-coaxially arranged. The corresponding groove 131 of the second positioning structure 130a can be a circular groove located on the side of the insulating member 130 facing the connecting member 120, and the circular groove can also be coaxially arranged with the insulating member 130. Through the cooperation of the circular protrusion and the circular groove, the positioning between the connecting member 120 and the insulating member 130 can be achieved during assembly, thereby improving the assembly efficiency.

[0059] It should be noted that the circular protrusion and the circular groove may also be arranged coaxially with the pole 110, so that the connector 120 and the insulating member 130 sleeved on the pole 110 can be positioned with each other through the cooperation of the circular protrusion and the circular groove.

[0060] like Figure 7 and Figure 8 As shown, in some embodiments, a step structure 132 is formed in the recess, and the step structure 132 separates the groove 131 into a first groove 1311 and a second groove 1312 connected to the first groove 1311, and the diameter of the second groove 1312 is larger than the diameter of the first groove 1311; the first groove 1311 is used to accommodate the protruding structure 121, and the second groove 1312 is used to install the main body 120c.

[0061] Among them, the groove 131 is divided into a first groove 1311 and a second groove 1312 connected to the first groove 1311 by a step structure, and the first groove 1311 is located on the side of the second groove 1312 away from the connector 120, the diameter of the first groove 1311 is smaller than the diameter of the second groove 1312, the first groove 1311 cooperates with the protruding structure 121, and the second groove 1312 is used to install the main body 120c of the connector 120. In this way, the positioning between the connector 120 and the insulating member 130 can be achieved, and at the same time, the connector 120 can be at least partially located inside the second groove 1312 of the insulating member 130, so as to reduce the height of the battery cover assembly 100, improve the structural space utilization, and improve the energy density of the battery 10.

[0062] It should be noted that the first groove 1311 and the second groove 1312 can be coaxially arranged, and the first groove 1311 and the second groove 1312 are also coaxially arranged with the pole 110, which is convenient for manufacturing and installation. In addition, since the first groove 1311 and the second groove 1312 are used to achieve the positioning function, the first groove 1311 and the second groove 1312 can also be non-coaxially arranged, as long as they can meet the positioning and alignment during installation.

[0063] The first locking structure 120b and the second locking structure 130b can be constructed in any suitable manner. In some embodiments, the step structure 132 includes a limiting portion 1321, which extends toward the center direction of the insulating member 130; the limiting portion 1321 forms the second locking structure 130b; the protruding structure 121 includes a notch portion 122, which is recessed in a direction away from the insulating member 130, and the notch portion 122 forms the first locking structure 120b) wherein, in order to further save space, the step structure 132 may include a limiting portion 1321, which forms the second locking structure 130b, and correspondingly, the protruding structure 121 may include a notch portion 122, and when the protruding structure 121 cooperates with the groove 131 to achieve positioning, the limiting portion 1321 can cooperate with the notch portion 122, thereby locking the circumferential rotation between the connecting member 120 and the insulating member 130.

[0064] In some embodiments, the step structure 132 may further include a step body 1322 , and the limiting portion 1321 is disposed on the inner side wall of the step body 1322 ; the notch portion 122 extends from the circumferential edge of the protruding structure 121 toward the center of the protruding structure 121 .

[0065] The first locking structure 120b may be a notch 122 extending from the edge of the protruding structure 121 toward the center of the connector 120; the second locking structure 130b may be a limiter 1321 extending inward (toward the center of the insulating member 130) from the step body 1322. That is, the first locking structure 120b is arranged based on the protruding structure 121, and the second locking structure 130b is arranged based on the step body 1322 of the step structure 132 in the groove 131, which further simplifies the locking structure. After the connector 120 and the insulating member 130 are connected, the notch 122 cooperates with the limiter 1321 to limit the circumferential rotation of the two, thereby realizing the anti-rotation function.

[0066] like Figure 6 and Figure 7 As shown, in some embodiments, the notch 122 and the limiting portion 1321 are both multiple and correspond one to one. For example, there are two notch 122 and two limiting portions 1321, and the two notch 122 and the two limiting portions 1321 can be symmetrically arranged on the protruding structure 121 and the step body 1322 in the groove 131, respectively. It should be noted that the notch 122 and the limiting portion 1321 can also be three or more, and can correspond to each other to achieve the anti-rotation of the connecting member 120 and the insulating member 130.

[0067] The limiting portion 1321 can be set at any suitable position inside the groove 131. In some embodiments, the limiting portion 1321 is set on the inner side wall of the step body 1322. The limiting portion 1321 can extend from the inner side wall of the step body 1322 toward the center direction, and its shape corresponds to the shape of the notch 122, that is, the anti-rotation between the connecting member 120 and the insulating member 130 can be achieved. It should be noted that the upper surface of the limiting portion 1321 can be flush with the top surface of the step body 1322.

[0068] Furthermore, if Figure 7As shown, in order to improve the anti-twist effect, in some embodiments, the distance D between the inner side wall of the limiting portion 1321 and the side wall of the second groove 1312 is greater than 0.6 mm. The distance D between the inner side wall of the limiting portion 1321 and the side wall of the second groove 1312 (the inner side wall of the step body 1322) here refers to the maximum distance between the inner side wall of the limiting portion 1321 and the inner side wall of the second groove 1312, and the distance can evaluate the circumferential locking effect to a certain extent, that is, the larger the distance, the better the anti-twist effect.

[0069] It is understandable that when the inner side wall of the limiting portion 1321 is a plane, the angle α between the plane and the tangent line at the intersection of the limiting portion 1321 and the inner side wall of the first groove 1311 will also affect the circumferential locking effect to a certain extent. Figure 7 As shown, in some embodiments, the angle α between the plane and the tangent line at the junction of the limiting portion 1321 and the second groove 1312 is greater than 90°. The anti-twist effect can be further guaranteed by the above-mentioned distance D and angle α.

[0070] It should be noted that adding the limit portion 1321 can increase the torsion resistance of the battery cover assembly 10. When the torsional force is large, if the angle α between the plane of the limit portion 1321 and the tangent is small, it is easy for the stress to be too large at the connection, resulting in rupture of the insulating member 130 and damage to the battery. By setting and limiting the width D and the angle α of the limit portion 1321, the stress can be averaged to avoid rupture of the connection between the limit portion 1321 and the step body 1322 due to excessive stress.

[0071] In order to further limit the rotation of the insulating member 130, as shown in FIG. Figure 3 and Fig.10 As shown, in some embodiments, the battery cover assembly 100 further includes a cover 140, which is sleeved on the pole 110 and located on the side of the insulating member 130 away from the connecting member 120, and the cover 140 is provided with a third locking structure 140a; the insulating member 130 is provided with a fourth locking structure 130c, and the fourth locking structure 130c cooperates with the third locking structure 140a to limit the circumferential rotation between the insulating member 130 and the cover 140. By providing the third locking structure 140a and the fourth locking structure 130c for limiting the circumferential rotation between the cover 140 and the insulating member 130, the rotation of the insulating member 130 is further limited, thereby preventing the pole 110 and the connecting member 120 from rotating.

[0072] The third locking structure 140a and the fourth locking structure 130c can be constructed using any suitable structure, such as Fig.10As shown, in some embodiments, the side of the cover plate 140 facing the insulating member 130 is provided with a recessed portion 141 for at least partially accommodating the insulating member 130, and the fourth locking structure 130c includes a groove portion 142 formed on the circumferential side wall of the recessed portion 141; the third locking structure 140a includes a protrusion 133 provided on the circumference of the insulating member 130 and corresponding to the groove portion 142. Among them, the recessed portion 141 can be configured as a circular structure coaxially arranged with the pole 110, and the inner side wall of the circular structure forms a groove portion 142 extending outward, and the corresponding protrusion 133 can be configured to extend outward from the outer edge of the insulating member 130, which can be installed inside the groove portion 142 when the insulating member 130 is connected to the cover plate 140, so as to achieve anti-twist between the insulating member 130 and the cover plate 140. The groove portion 142 and the protrusion 133 can adopt any suitable shape, for example, they can be arc-shaped, triangular, quadrilateral or polygonal, etc., which are not specifically limited here.

[0073] In some embodiments, there are multiple grooves 142 and convex parts 133, and they correspond one to one. For example, there can be four grooves 142 and four convex parts 133, wherein the four grooves 142 are evenly distributed along the circumference of the recessed part 141, and the four convex parts 133 are evenly distributed along the circumference of the insulating member 130. This is to better achieve the fit and avoid the rotation between the insulating member 130 and the cover plate 140. It should be noted that the cover plate 140 can also be made of aluminum.

[0074] like Figure 3 and Fig.13 As shown, in some embodiments, the battery cover assembly 100 also includes a pole 110, a brake frame 150 and a seal 160 mounted on the pole 110; the brake frame 150 is located on the side of the cover 140 away from the insulating member 130; the seal 160 is sealed and connected to the gap between the brake frame 150, the cover 140 and the pole 110.

[0075] The cover plate 140 and the brake frame 150 may be connected together by circumferential locking, so that the purpose of limiting the rotation of the connector 120 and the pole 110 is achieved by limiting the rotation of the brake frame 150. The locking structure between the cover plate 140 and the brake frame 150 may refer to the third locking structure part and the fourth locking structure 130c between the insulating member 130 and the cover plate 140. For example, a circumferential locking protrusion 143 may be provided on the bottom surface of the cover plate 140, and correspondingly, a circumferential locking groove (not shown in the figure) cooperating with the circumferential locking protrusion 143 may be provided on the upper surface of the brake frame 150. The circumferential locking protrusion 143 cooperates with the circumferential locking groove to achieve positioning and circumferential rotation locking.

[0076] Among them, the brake frame 150 can be made of insulating material, and the brake frame 150 is used to cooperate with the structure on the battery cell 200 or the shell 210 of the battery 10 to achieve circumferential locking, thereby preventing the above-mentioned cover plate 140, insulating member 130, connecting member 120 and pole 110 from twisting.

[0077] It can be understood that the above-mentioned seal 160 can seal the gap between the cover plate 140 and the pole 110. In addition, it can also seal the gap between the cover plate 140 and the brake frame 150, or the gap between the brake frame 150 and the pole 110 to prevent external moisture or impurities from entering the interior of the battery 10 and affecting the use of the battery 10.

[0078] like Fig.12 and Fig.13 As shown, the embodiment of the present disclosure provides a battery 10, which includes a battery cell 200 and a battery cover assembly 100 provided in the above embodiment of the present disclosure. Therefore, the battery 10 also has all the advantages of the above battery cover assembly 100, which will not be repeated here.

[0079] The battery 10 may be a cylindrical battery 10, which includes a battery cell 200, a shell 210, a positive electrode cover plate assembly, and a negative electrode cover plate assembly. The battery cell 200 is installed in the shell 210, and the battery cover plate assembly 100 may be a negative electrode cover plate assembly of the battery 10. The battery cell 200 of the battery 10 may be connected to the pole 110 of the battery cover plate assembly 100 through the negative electrode collector plate 170, and the cover plate 140 of the battery cover plate assembly 100 is fixedly connected to one end of the shell 210 of the battery 10. In addition, the positive electrode cover plate assembly is connected to the other end of the battery cell 200 and is fixedly connected to the other end of the shell 210.

[0080] The positive electrode cover plate 140 assembly may include a positive electrode current collecting plate 310, a bottom plate 320, an explosion-proof valve 330, etc. For details, reference may be made to related technologies. Since it does not involve the main concept of this embodiment, it will not be described here one by one.

[0081] In the battery cover assembly 100 and the battery 10 disclosed in the present invention, the cooperation between the connector 120 and the insulating member 130 can effectively prevent the rotation of the connector 120 and the insulating member 130. At the same time, the cooperation between the insulating member 130 and the cover plate 140 can also effectively prevent the rotation of the insulating member 130 and the cover plate 140, thereby achieving double anti-twisting. The groove 131 of the insulating member 130 adopts a sunken design to reduce the height and improve the utilization rate of the structural space.

[0082] By forming a second locking structure 130b that cooperates with the first locking structure 120b inside the groove 131, the number of injection molding positioning mechanisms is reduced, and the number of production processes is reduced; the injection molding spare parts have extra space, and the amount of injection molding raw materials used is reduced; the reserved space is conducive to the placement of riveting step parts, reducing the difficulty of assembly;

[0083] By configuring the groove 131 of the insulating member 130 as a first groove 1311 and a second groove 1312 , a gradient is adopted to facilitate the insertion of the connector 120 , thereby improving the assembly fit and reducing the assembly difficulty.

[0084] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0085] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0086] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery cover assembly, characterized in that: Including connectors and insulating parts; The connecting member and the insulating member are respectively used to be connected to the pole, and a first positioning structure and a first locking structure are provided on the side of the connecting member facing the insulating member in the thickness direction; The side of the insulating member facing the connecting member is provided with a second positioning structure and a second locking structure; The first positioning structure cooperates with the second positioning structure to install and position the connecting member and the insulating member; The first locking structure cooperates with the second locking structure to limit the rotation between the connecting member and the insulating member.

2. The battery cover assembly according to claim 1, characterized in that: The connecting member comprises a main body, and the first positioning structure is configured as a protruding structure on a side of the main body facing the insulating member in a thickness direction thereof and facing the insulating member; The second positioning structure is configured as a groove formed by the insulating member being recessed in a thickness direction of the insulating member toward a side surface of the connecting member away from the connecting member, and the second positioning structure is used to accommodate the first positioning structure.

3. The battery cover assembly according to claim 2, characterized in that: A step structure is formed in the depression, the step structure divides the groove into a first groove and a second groove connected to the first groove, and the diameter of the second groove is greater than the diameter of the first groove; The first groove is used to accommodate the protruding structure, and the second groove is used to install the main body.

4. The battery cover assembly according to claim 3, characterized in that: The step structure includes a limiting portion, and the limiting portion extends toward the center direction of the insulating member; the limiting portion forms the second locking structure; The protrusion structure includes a notch portion, the notch portion is recessed in a direction away from the insulating member, and the notch portion forms the first locking structure.

5. The battery cover assembly according to claim 3, characterized in that: The first groove and the second groove are coaxially arranged.

6. The battery cover assembly according to claim 4, characterized in that: There are multiple notch parts and multiple limiting parts, and they correspond to each other one by one.

7. The battery cover assembly according to claim 4, characterized in that: The step structure comprises a step body, and the limiting portion is arranged on the inner side wall of the step body; The notch portion extends from the circumferential edge of the protruding structure toward the center of the protruding structure.

8. The battery cover assembly according to claim 7, characterized in that: The distance between the inner side wall of the limiting portion and the side wall of the second groove is greater than 0.6 mm; and / or The inner side wall of the limiting portion is a plane, and an angle between the plane and a tangent line at a junction of the limiting portion and the first groove is greater than 90°.

9. The battery cover assembly according to any one of claims 1 to 8, characterized in that: The battery cover assembly further comprises a cover, which is sleeved on the pole and located on a side of the insulating member away from the connecting member, and the cover is provided with a third locking structure; The insulating member is provided with a fourth locking structure, and the fourth locking structure cooperates with the third locking structure to limit the circumferential rotation between the insulating member and the cover plate.

10. The battery cover assembly according to claim 9, characterized in that: A recessed portion for at least partially accommodating the insulating member is provided on the side of the cover plate in the thickness direction facing the insulating member, and the fourth locking structure includes a groove portion formed on the circumferential side wall of the recessed portion; The third locking structure includes a protrusion portion which is arranged in the circumference of the insulating member and corresponds to the groove portion.

11. The battery cover assembly according to claim 10, characterized in that: There are multiple grooves and convex parts, and they correspond to each other one by one.

12. The battery cover assembly according to claim 9, characterized in that: The battery cover assembly also includes a pole, a brake frame sleeved on the pole, and a seal; The brake frame is located on a side of the cover plate away from the insulating member; The sealing member is sealingly connected to the gap between the brake frame, the cover plate and the pole.

13. A battery, characterized in that: The battery comprises a battery cell and a battery cover assembly as described in any one of claims 1 to 12.

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