Battery cell cover plate assembly, battery and electric device thereof

Abstract

The invention discloses a battery cell cover plate assembly, a battery and a power utilization device thereof. The disclosed cover plate assembly comprises a cover plate body, a second pole and a first pole, a mounting hole is formed in the cover plate body; the second pole is arranged on one side of the cover plate body; the first pole is arranged on the other side of the cover plate body; a groove is formed in any one of the first pole and the second pole; a plate part is arranged on the other one of the first pole and the second pole; at least one second clamping piece is arranged in the groove; a first column body is arranged on the plate part; at least one first clamping piece is arranged on the first column body far away from the plate part; and the first column body penetrates through the mounting hole and is inserted into the groove, so that the first clamping piece is connected with the second clamping piece. According to the cover plate assembly, the pole column can be flexibly detached from the cover plate and replaced, meanwhile, the connection mode between the pole column and the cover plate is simple and convenient, and the forming process is simple.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a battery cell cover plate assembly, a battery and an electrical device using the same. Background Art

[0002] A battery includes a cover plate, a battery cell, a pole column, etc. The pole column is arranged through the cover plate. The inner end of the pole column extends to conduct with the battery cell, and the outer end of the pole column extends to the outside of the cover plate for connecting with external components to realize external power supply.

[0003] The pole columns in existing batteries are usually integrally formed and fixedly connected to the cover plate by welding, bonding, etc. The forming process is complex and the cost is high; moreover, it is not convenient to disassemble and replace the pole columns from the cover plate. Summary of the Invention

[0004] In view of this, this application aims to at least solve one of the technical problems in the related art to some extent. For this purpose, this application provides a battery cell cover plate assembly, a battery and an electrical device using the same, which can flexibly disassemble and replace the pole columns from the cover plate, and at the same time, the connection method between the pole columns and the cover plate is simple, and the forming process is simple.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] According to the first aspect of this application, this application provides a cover plate assembly, including:

[0007] A cover plate body provided with a mounting hole;

[0008] A second pole column provided on one side of the cover plate body;

[0009] A first pole column provided on the other side of the cover plate body;

[0010] On any one of the first pole column and the second pole column, there is a groove; on the other one of the first pole column and the second pole column, there is a plate portion;

[0011] At least one second engaging member is provided in the groove; a first column body is provided on the plate portion; at least one first engaging member is provided on the first column body away from the plate portion;

[0012] The first column body passes through the mounting hole and is inserted into the groove, so that the first engaging member and the second engaging member are connected.

[0013] In some embodiments, the first engaging member includes an engaging portion and a buckling portion. The engaging portion is provided at one end of the first column body and is close to the side wall of the first column body, and the buckling portion extends towards the axis of the first column body;

[0014] The clamping part and the buckling part are detachably connected to the second clamping part.

[0015] In some embodiments, the second pole also includes a second cylinder;

[0016] The second cylinder is provided at the bottom of the groove, and the second clamping part is provided on the side wall of the second cylinder away from the bottom of the groove.

[0017] In some embodiments, a relief groove is provided between any two adjacent first clamping parts;

[0018] A clamping groove is provided between any two adjacent second clamping parts;

[0019] When the first cylinder is inserted into the groove, the clamping part can pass through the clamping groove, and the second clamping part passes through the relief groove; by rotating the first pole and / or the second pole, the bottom surface of the second clamping part is in contact with the top surface of the buckling part, realizing the clamping connection between the second pole and the first pole.

[0020] In some embodiments, in the direction along the contact surface between the second clamping part and the buckling part, the width of the second clamping part and / or the width of the buckling part is a, and the a satisfies: 0.5 mm ≤ a ≤ 1.5 mm.

[0021] In some embodiments, in the vertical direction, the distance between the bottom surface of the groove and the bottom surface of the second pole is b, and the b satisfies: 0.5 mm ≤ b ≤ 1.5 mm.

[0022] In some embodiments, a sealing member is further included, sleeved on the outer side of the first pole or the second pole;

[0023] The sealing member includes a flat gasket part and a vertical part. When the first cylinder passes through the mounting hole, the vertical part is inserted into the mounting hole, and the vertical part is located between the side wall of the first cylinder and the inner side wall of the mounting hole;

[0024] The flat gasket part is located between the upper surface of the cover plate body and the surface of the plate part close to the first cylinder.

[0025] In some embodiments, a first plastic part and a second plastic part are further included;

[0026] The first plastic part is provided on one side of the cover plate body; the second plastic part is provided on the other side of the cover plate body;

[0027] The first plastic part includes a cushion part and a socket part. The first pole passes through the first plastic part. The socket part contacts the outer side wall of the plate part. The cushion part is located between the bottom surface of the plate part and the upper surface of the cover body.

[0028] The second plastic part is adapted to the cover body and is provided with a through hole adapted to the mounting hole.

[0029] When the first pole passes through the mounting hole and the through hole and is connected to the second pole, the second plastic part is located between the lower surface of the cover body and the upper surface of the first pole or the second pole.

[0030] According to the second aspect of the present application, the present application provides a battery, including: the cover plate assembly according to any one of the embodiments of the first aspect of the present application.

[0031] According to the third aspect of the present application, the present application provides an electrical device, including: the cover plate assembly according to any one of the embodiments of the first aspect of the present application;

[0032] and / or, the battery according to the second aspect of the present application.

[0033] Implementing the technical solutions of the present application has at least the following beneficial effects:

[0034] A cell cover plate assembly, a battery and an electrical device thereof provided by the present application include a cover body, a second pole and a first pole; the cover body is provided with a mounting hole; the second pole is arranged on one side of the cover body; the first pole is arranged on the other side of the cover body; on any one of the first pole and the second pole, there is a groove; on the other of the first pole and the second pole, there is a plate part; at least one second clamping part is arranged in the groove; a first column body is arranged on the plate part; at least one first clamping part is arranged on the first column body far away from the plate part; the first column body passes through the mounting hole and is inserted into the groove, so that the first clamping part and the second clamping part are connected. The cover plate assembly of the present application can flexibly disassemble and replace the pole from the cover plate. At the same time, the connection method between the pole and the cover plate is simple, and the molding process is simple.

[0035] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0036] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present application, and are used together with the specification to explain the principles of the present application.

[0037] Figure 1 The figure shows a schematic structural diagram of the cover plate assembly provided by the present application;

[0038] Figure 2 The following shows a schematic structural view of the first pole of the cover plate assembly provided by the present application;

[0039] Figure 3 The following shows a schematic structural view of the second pole of the cover plate assembly provided by the present application;

[0040] Figure 4 The following shows a schematic structural view of the bottom of the cover plate assembly provided by the present application;

[0041] Figure 5 The following shows a schematic structural view of the top of the cover plate assembly provided by the present application;

[0042] Figure 6 The following shows a schematic structural view of the A-A cross-section of the cover plate assembly provided by the present application;

[0043] Figure 7 The following shows a schematic structural view of the C-C cross-section of the cover plate assembly provided by the present application.

[0044] Description of the attached drawing structure:

[0045] 100 - Cover plate assembly;

[0046] 110 - Cover plate body; 111 - Mounting hole;

[0047] 120 - First pole; 121 - Plate part; 122 - First column; 123 - First engaging part; 124 - Avoidance groove;

[0048] 130 - Second pole; 131 - Groove; 132 - Second column; 133 - Second engaging part;

[0049] 140 - Sealing part;

[0050] 150 - First plastic part;

[0051] 160 - Second plastic part; 161 - Through hole.

[0052] Through the above attached drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These attached drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Specific embodiments

[0053] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments of the present application are only used to illustrate the present application and not to limit the scope of the present application.

[0054] The endpoints and any values within the ranges disclosed in this document are not limited to the exact ranges or values. These ranges or values should be understood to include values close to these ranges or values. For numerical ranges, between the endpoint values of each range, between the endpoint values and individual point values of each range, and between individual point values, they can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be regarded as specifically disclosed in this document.

[0055] If there is no special indication, all embodiments and alternative embodiments of this application can be combined with each other to form new technical solutions.

[0056] If there is no special indication, all technical features and alternative technical features of this application can be combined with each other to form new technical solutions.

[0057] If there is no special indication, all steps of this application can be carried out sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method can include steps (a) and (b) carried out sequentially, or can also include steps (b) and (a) carried out sequentially. For example, it is mentioned that the method may further include step (c), which means that step (c) can be added to the method in any order. For example, the method can include steps (a), (b) and (c), or can also include steps (a), (c) and (b), or can also include steps (c), (a) and (b), etc.

[0058] If there is no special indication, the "including" and "comprising" mentioned in this application mean open-ended, and can also be closed-ended. For example, the "including" and "comprising" can mean that other components not listed can also be included or comprised, or can only include or comprise the listed components.

[0059] Figure 1 The following is a schematic structural diagram of the cover plate assembly provided by the embodiment of this application. As Figure 1 shown, in some embodiments of this application, a cover plate assembly is provided, including: a cover plate body 110, a second pole 130 and a first pole 120; the cover plate body 110 is provided with a mounting hole 111; the second pole 130 is arranged on one side of the cover plate body 110; the first pole 120 is arranged on the other side of the cover plate body 110; on any one of the first pole 120 and the second pole 130, a groove 131 is provided; on the other of the first pole 120 and the second pole 130, a plate portion 121 is provided; at least one second engaging member 133 is provided in the groove 131; a first column 122 is provided on the plate portion 121; at least one first engaging member 123 is provided on the first column 122 away from the plate portion 121; the first column 122 passes through the mounting hole 111 and is inserted into the groove 131, so that the first engaging member 123 and the second engaging member 133 are connected.

[0060] Reference Figure 1 , the cover plate assembly 100 includes a cover plate body 110, and a first pole 120 and a second pole 130 are respectively arranged on the upper and lower sides of the cover plate body 110. An installation hole 111 is arranged on the cover plate body 110. Those skilled in the art can design the number of the installation holes 111 according to the actual situation on the basis of this application, and it can be one, two, three,... The material of the cover plate body 110 is metal, such as aluminum metal, alloy, etc.

[0061] On any one of the first pole 120 and the second pole 130, a groove 131 is provided; on the other one of the first pole 120 and the second pole 130, a plate portion 121 is provided. For example: the first pole 120 is located on the side close to the battery cell, a groove 131 can be provided on the first pole 120, and a plate portion 121 can be provided on the second pole 130; alternatively, a groove 131 can be provided on the second pole 130, and a plate portion 121 can be provided on the first pole 120.

[0062] The first pole 120 or the second pole 130 can pass through from one side of the installation hole 111 and be connected to the second pole 130 or the first pole 120 located on the other side of the cover plate body 110. The materials of the first pole 120 and the second pole 130 are well known to those skilled in the art and will not be elaborated here.

[0063] Exemplarily, the second pole 130 can be arranged on the side close to the battery cell for connecting to the tab, tab cluster or adapter in the battery cell, etc. A groove 131 is arranged on the second pole 130. Looking down from the top of the second pole 130, the groove 131 can be designed as a square groove, a circular groove or a rectangular groove; a second clamping member 133 is arranged in the groove 131. The second clamping member 133 can be arranged on the inner side wall of the groove 131 or at the bottom of the groove 131. When the first pole 120 passes through the installation hole 111, the first pole 120 is partially inserted into the groove 131 and connected to the second clamping member 133, thereby realizing the detachable connection between the first pole 120 and the second pole 130.

[0064] Reference Figure 1 And Figure 2, the first pole post 120 is disposed on one side of the cover plate body 110 away from the second pole post 130, that is, the cover plate body 110 is clamped between the first pole post 120 and the second pole post 130. The second pole post 130 includes a first column body 122. One end of the first column body 122 is fixedly connected with a plate portion 121 by means of welding, bonding or the like. The other end of the first column body 122 is provided with a first engaging member 123. One end of the first column body 122 away from the plate portion 121 passes through the mounting hole 111 and is inserted into the groove 131, so that the second engaging member 133 and the first engaging member 123 are detachably connected.

[0065] The number of the first engaging members 123 provided may be one, two, three... In a preferred embodiment, the number of the first engaging members 123 is adapted to the number of the second engaging members 133, so as to firmly connect the first pole post 120 and the second pole post 130.

[0066] A cover plate assembly, a battery and an electrical device using the same provided by an embodiment of the present application include a cover plate body, a second pole post and a first pole post; the cover plate body is provided with a mounting hole; the second pole post is disposed on one side of the cover plate body; the first pole post is disposed on the other side of the cover plate body; on any one of the first pole post and the second pole post, a groove is provided; on the other of the first pole post and the second pole post, a plate portion is provided; at least one second engaging member is provided in the groove; a first column body is provided on the plate portion; at least one first engaging member is provided on the first column body away from the plate portion; the first column body passes through the mounting hole and is inserted into the groove, so that the first engaging member and the second engaging member are connected. The present application can flexibly detach and replace the pole post from the cover plate. At the same time, the connection manner between the pole post and the cover plate is simple, and the cover plate assembly with a simple forming process can flexibly detach and replace the pole post from the cover plate. At the same time, the connection manner between the pole post and the cover plate is simple, and the forming process is simple.

[0067] In some embodiments of the present application, the first engaging member 123 includes a clamping portion and a buckling portion. The clamping portion is disposed at one end of the first column body 122 and is close to the side wall of the first column body 122; the buckling portion is connected to the clamping portion, and the buckling portion extends towards the axis of the first column body 122; the first column body 122 passes through the mounting hole 111 and is inserted into the groove 131, and the clamping portion and the buckling portion are detachably connected to the second engaging member 133.

[0068] Reference Figure 2 , the first engaging member 123 is disposed at one end of the first column body 122 away from the plate portion 121 and extends along the generatrix of the first column body 122 in a direction away from the first column body 122; if there are multiple first engaging members 123, the multiple first engaging members 123 are independently provided respectively.

[0069] The first clamping part 123 includes a clamping portion that extends along the generatrix of the first column 123 in a direction away from the first column 122. One end of the clamping portion and one end of the first column 122 away from the plate portion 121 are fixedly connected by means such as welding or bonding. The other end of the clamping portion is fixedly connected with a buckle portion that extends in the direction of the axis of the first column 122. The clamping portion and the buckle portion in the first clamping part 123 form a shape similar to an "L".

[0070] When the first pole column 120 passes through the mounting hole 111, the side of the plate portion 121 connecting the first column 122 contacts one surface of the cover plate body 110. The first column 122 and the first clamping part 123 are inserted into the groove 131 of the second pole column 130, and the clamping portion and the buckle portion are detachably connected to the second clamping part 133. Through this connection method, the first pole column 120 and the second pole column 130 can be easily installed, disassembled, and replaced, avoiding complex connection methods and forming processes such as welding or riveting, and the first pole column 120 and the second pole column 130 can also be stably connected.

[0071] The cover plate assembly is obtained in the above manner to form a battery cell. The positive and negative electrode tabs of the battery cell are electrically connected to different second pole columns 130 respectively, and the positive and negative terminals of an external charging device or an electrical device are connected to the corresponding first pole columns 120 respectively. Of course, the cover plate body 110 and the pole column are not electrically conductive. Those skilled in the art can set an insulating layer between the pole column and the cover plate body by well-known methods, which will not be elaborated here.

[0072] In some embodiments of the present application, the second pole column 130 further includes a second column 132. The second column 132 is provided at the bottom of the groove 131, and the second clamping part 133 is provided on the side wall of the second column 132 away from the bottom of the groove 131.

[0073] Reference Figure 3 As shown in, the second column 132 is disposed at the bottom of the groove 131 and is fixedly connected to the bottom of the groove 131. A second clamping part 133 is provided at one end of the second column 132 away from the bottom of the groove 131. One end of the second clamping part 133 is connected to the side wall of the second column 132, and the other end of the second clamping part 133 extends towards the side wall of the groove 131 and does not contact the side wall of the groove 131.

[0074] If there are multiple second clamping parts 133 provided on the second column 132, a "T" shape is formed between any two opposite second clamping parts 133 and the second column 132. When the first pole column 120 in the above embodiment is inserted into the groove 131, the buckle portion on the first column 122 is detachably connected to the second clamping part 133.

[0075] In some embodiments of the present application, an avoidance groove 124 is provided between any two adjacent first engaging members 123; a clamping groove is provided between any two adjacent second engaging members 133; when the first cylinder 122 is inserted into the groove 131, the engaging portion can pass through the clamping groove, and the second engaging member 133 can pass through the avoidance groove 124; by rotating the first pole 120 and / or the second pole 130, the bottom surface of the second engaging member 133 is in contact with the top surface of the buckling portion, thereby realizing the clamping connection between the second pole 130 and the first pole 120.

[0076] Continue to refer to Figure 2 and Figure 3 , an avoidance groove 124 is provided between any two adjacent first engaging members 123, which enables the second engaging member 133 to pass through the avoidance groove 124, and the size of the avoidance groove 124 is adapted to the size of the second engaging member 133; a clamping groove is provided between any two adjacent second engaging members 133, and the clamping groove enables the buckling portion and the engaging portion to pass through.

[0077] When the first cylinder 122 passes through the mounting hole 111 and is inserted into the groove 131, the engaging portion can pass through the clamping groove, and the second engaging member 133 can pass through the avoidance groove 124. By rotating the first pole 120 or the second pole 130, or simultaneously rotating the first pole 120 and the second pole 130 in opposite directions, the bottom surface of the second engaging member 133 is in contact with the top surface of the buckling portion, thereby realizing the clamping connection between the second pole 130 and the first pole 120.

[0078] In some preferred embodiments, the number of avoidance grooves 124 is adapted to the number of second engaging members 133, or the number of clamping grooves is adapted to the number of first engaging members 123, so that the first pole 120 and the second pole 130 can be flexibly installed and disassembled and can also be stably connected to ensure the safety of the battery cell.

[0079] In some embodiments of the present application, the first pole 120 includes a plate portion 121 and at least one first engaging member 123; the second pole 130 includes a groove 131, a second cylinder 132 provided in the groove 131, and at least one second engaging member 133; the first pole 120 passes through the mounting hole 111 and is inserted into the groove 131, and is detachably connected to the second pole 130.

[0080] In order to facilitate and simplify the process of installing the pole column, in a preferred embodiment, the first pole column 120 includes a plate portion 121 and at least one first engaging member 123, and the first pole column 120 is located on the side away from the battery cell; the second pole column 130 includes a groove 131, the second pole column 130 is disposed on the side close to the battery cell, and the second pole column 130 is connected to the tab in the battery cell. In a specific implementation process, the first column body 122 in the first pole column 120 can pass through the mounting hole 111 and be inserted into the groove 131 in the second pole column 130 to achieve the engagement between the first pole column 120 and the second pole column 130.

[0081] In some embodiments of the present application, in the direction along the contact surface between the second engaging member 133 and the buckling portion, the width of the second engaging member 133, and / or the width of the buckling portion is a, and a satisfies: 0.5 mm ≤ a ≤ 1.5 mm.

[0082] Reference Figures 5 to 7 , by rotating the pole column, the stable engagement between the first pole column 120 and the second pole column 130 is achieved. The main reason is that the engagement between the first pole column 120 and the second pole column 130 is realized by the engagement between the buckling portion and the second engaging member 133; moreover, the pole column is usually made of aluminum metal, alloy, etc. If the width of the second engaging member 133 or the width of the buckling portion is too small, the first pole column 120 and the second pole column 130 are likely to become disengaged when the battery cell vibrates or shakes; if the width of the second engaging member 133 or the width of the buckling portion is too large, it is likely to increase the process cost and occupy the internal space of the groove 131. Of course, the direction along the contact surface between the second engaging member 133 and the buckling portion can be parallel to the bottom surface of the groove 131, or the direction along the contact surface between the second engaging member 133 and the buckling portion can form a certain spatial angle with the bottom surface of the groove 131. Those skilled in the art can make self-adjustments and designs based on the present application.

[0083] Specifically, the width of the second engaging member 133, and / or the width a of the buckling portion can be any one or any value between any two of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm or 1.5 mm.

[0084] The following is further illustrated through specific embodiments. The difference between Embodiments 1 to 3 and Comparative Examples 1 to 2 lies only in the width of the second engaging member 133 and the width a of the buckling portion, as shown in Table 1.

[0085] Table 1.

[0086]

[0087] As can be seen from Table 1, if a is less than the above range, the pole post and the second pole post are likely to become disengaged, and the strength of the pole post is insufficient; if a is greater than the above range, it will occupy the lateral space.

[0088] In some embodiments of the present application, in the vertical direction, the distance between the bottom surface of the groove 131 and the bottom surface of the second pole post 130 is b, and b satisfies: 0.5 mm ≤ b ≤ 1.5 mm.

[0089] Reference Figures 5 to 7 , the groove 131 of the second pole post 130 is used to connect with the first pole post 120. Since the bottom of the second pole post 130 needs to be connected to the tab in the battery cell, if the distance b between the bottom surface of the groove 131 and the bottom surface of the second pole post 130 is too small, it is easy to penetrate when welding the tab, etc. to the bottom of the second pole post 130. If it is too large, it will occupy the height space and easily cause the reduction of the battery cell capacity.

[0090] Specifically, b can be any one or any value between any two of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm or 1.5 mm.

[0091] The following is further illustrated by specific embodiments. The difference between Embodiments 4 to 6 and Comparative Examples 3 to 4 is only that the distance between the bottom surface of the groove 131 and the bottom surface of the second pole post 130 is b, as shown in Table 2.

[0092] Table 2.

[0093]

[0094] As can be seen from Table 2, if b is less than the above range, the penetration depth of the internal soft connection welding is easy to penetrate; if b is greater than the above range, it will occupy the height space and result in a low battery cell capacity.

[0095] In some embodiments of the present application, the cover plate assembly further includes a seal 140, which is sleeved on the outside of the first pole post 120 or the second pole post 130; the seal 140 includes a flat pad portion and a vertical portion. When the first column body 122 passes through the mounting hole 111, the vertical portion is inserted into the mounting hole 111, and the vertical portion is located between the side wall of the first column body 122 and the inner side wall of the mounting hole 111; the flat pad portion is located between the upper surface of the cover plate body 110 and the surface of the plate portion 121 close to the first column body 122.

[0096] Reference Figure 1, the seal 140 is mainly used for sealing to insulate between the pole post and the cover body 110. The seal 140 can be inserted into the mounting hole 111, and the outer side wall of the vertical portion on the seal 140 contacts the inner wall of the mounting hole 111. The first cylinder 122 can pass through the seal 140, and the side wall of the first cylinder 122 contacts the inner side wall of the vertical portion.

[0097] The flat pad portion is located on the side of the cover body 110 close to the first pole post 120, and the flat pad portion and the vertical portion are similar to an inverted "L" shape. In specific implementation, first insert the seal 140 into the mounting hole 111, and the first pole post 120 passes through the mounting hole 111 with the seal 140 installed and is detachably connected to the second pole post 130.

[0098] In some embodiments of the present application, the cover assembly further includes a first plastic part 150, which is arranged on the side close to the first pole post 120; the first plastic part 150 includes a pad portion and a socket portion, the first pole post 120 passes through the first plastic part 150, the socket portion contacts the outer side wall of the plate portion 121, and the pad portion is located between the bottom surface of the plate portion 121 and the upper surface of the cover body 110.

[0099] Reference Figure 1 , the first plastic part 150 is arranged on the side close to the first pole post 120. In the specific implementation process, the first pole post 120 passes through the first plastic part 150, and is connected to the second pole post 130 through the mounting hole 111 with the seal 140 installed.

[0100] The pad portion in the first plastic part 150 is sleeved on the outside of the flat pad portion of the seal 140. In the preferred implementation manner, the pad portion and the flat pad portion have the same thickness in the vertical direction; the socket portion can be sleeved on the plate portion 121 to play a role in protecting the first pole post 120.

[0101] In some embodiments of the present application, the cover assembly further includes a second plastic part 160, which is arranged on the other side of the cover body 110; the second plastic part 160 is adapted to the cover body 110 and is provided with a through hole 161 adapted to the mounting hole 111. When the first pole post 120 passes through the mounting hole 111 and the through hole 161 and is connected to the second pole post 130, the second plastic part 160 is located between the lower surface of the cover body 110 and the upper surface of the first pole post 120 or the second pole post 130.

[0102] Reference Figure 1 and Figure 4, the second plastic part 160 is arranged on one side of the cover plate body 110 away from the first plastic part 150. A through hole 161 adapted to the mounting hole is provided on the second plastic part 160. In a specific implementation process, the first pole column 120 passes through the first plastic part 150 and the mounting hole 111 where the seal 140 is installed, and after passing through the through hole 161, it is detachably connected to the second pole column 130.

[0103] In some embodiments of the present application, a battery is further provided, including: the cover plate assembly in any one of the above embodiments.

[0104] The battery further includes a battery cell and a housing. The battery cell is arranged in the housing. The cover plate assembly is connected to the housing, and the battery cell is electrically connected to the pole column in the cover plate assembly through a tab.

[0105] In some embodiments of the present application, an electrical device is further provided, including: the cover plate assembly in any one of the above embodiments; and / or, the battery in the above embodiments.

[0106] The parts not detailed in the present application are well-known technologies to those skilled in the art.

[0107] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and easy understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0108] It should be noted that the term "and / or" or " / " used herein is only a relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The singular forms of "a", "the", and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0109] In the specific embodiments and claims, a list of items connected by terms such as "at least one of", "at least a", "at least one kind of" or other similar terms may mean any combination of the listed items. For example, if items A and B are listed, the phrase "at least one of A and B" means only A; only B; or A and B. In another example, if items A, B, and C are listed, the phrase "at least one of A, B, and C" means only A; or only B; only C; A and B (excluding C); A and C (excluding B); B and C (excluding A); or all of A, B, and C. Item A may include a single element or multiple elements. Item B may include a single element or multiple elements. Item C may include a single element or multiple elements.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended 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 for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A cover plate assembly, characterized in that, Comprising: A cover body, provided with mounting holes; A second pole column, provided on one side of the cover body; A first pole column, provided on the other side of the cover body; On any one of the first pole column and the second pole column, a groove is provided; on the other of the first pole column and the second pole column, a plate portion is provided; At least one second engaging member is provided in the groove; a first column body is provided on the plate portion; and at least one first engaging member is provided on the first column body; The first column body passes through the mounting hole and is inserted into the groove, so that the first engaging member and the second engaging member are connected.

2. The cover plate assembly according to claim 1, wherein The first engaging member includes an engaging portion and a buckling portion. The engaging portion is provided at one end of the first column body and is close to the side wall of the first column body, and the buckling portion extends towards the axis of the first column body; The engaging portion and the buckling portion are detachably connected to the second engaging member.

3. The cover plate assembly according to claim 1, wherein, The second pole column further includes a second column body; The second column body is provided at the bottom of the groove, and the second engaging member is provided on the side wall of the second column body away from the bottom of the groove.

4. The cover plate assembly according to claim 2, wherein, An avoidance groove is provided between any two adjacent first engaging members; A card slot is provided between any two adjacent second engaging members; When the first column body is inserted into the groove, the engaging portion can pass through the card slot, and the second engaging member passes through the avoidance groove; by rotating the first pole column and / or the second pole column, the bottom surface of the second engaging member and the top surface of the buckling portion are in contact, realizing the clamping connection between the second pole column and the first pole column.

5. The cover plate assembly according to any one of claims 1 to 4, characterized in that In the direction along the contact surface of the second engaging member and the buckling portion, the width of the second engaging member, and / or the width of the buckling portion is a, and the a satisfies: 0.5 mm ≤ a ≤ 1.5 mm.

6. The cover plate assembly according to any one of claims 1 to 4, characterized in that, In the vertical direction, the distance between the bottom surface of the groove and the bottom surface of the second pole column is b, and the b satisfies: 0.5 mm ≤ b ≤ 1.5 mm.

7. The cover plate assembly according to claim 1, wherein It further includes a sealing member, sleeved on the outside of the first pole column or the second pole column; The sealing member includes a flat gasket portion and a vertical portion. When the first column body passes through the mounting hole, the vertical portion is inserted into the mounting hole, and the vertical portion is located between the side wall of the first column body and the inner side wall of the mounting hole; The flat gasket portion is located between the upper surface of the cover body and the surface of the plate portion close to the first column body.

8. The cover plate assembly according to claim 1, characterized in that, It further includes a first plastic part and a second plastic part; The first plastic part is provided on one side of the cover body; the second plastic part is provided on the other side of the cover body; The first plastic part includes a gasket portion and a socket portion. The first column body passes through the first plastic part, the socket portion contacts the outer side wall of the plate portion, and the gasket portion is located between the bottom surface of the plate portion and the upper surface of the cover body; The second plastic part is adapted to the cover body and is provided with a through hole adapted to the mounting hole; When the first column body passes through the mounting hole and the through hole, the second plastic part is located between the lower surface of the cover body and the upper surface of the first pole column or the second pole column.

9. A battery, characterized in that, Comprising: A battery cell, and the cover assembly according to any one of claims 1 to 8.

10. An electric device, characterized in that, Comprising: The cover assembly according to any one of claims 1 to 8; and / or, the battery according to claim 9.

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