Cover assembly and battery

Abstract

This utility model provides a cover plate assembly and a battery, wherein the cover plate assembly includes: a top cover; a conductive component for transmitting current; an insulating component, at least partially disposed between the top cover and the conductive component; and a sealing component, at least partially disposed between the top cover and the conductive component; wherein the insulating component and the sealing component are in contact to form a bonding interface, and at least one of the conductive component and the top cover is provided with a recess, the recess covering the edge of the bonding interface. In embodiments of this utility model, by providing a recess in at least one of the conductive component and the top cover, and having the recess cover the edge of the bonding interface, the creepage distance between the conductive component and the top cover is increased, thereby reducing the risk of insulation failure.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a cover plate assembly and a battery. Background Technology

[0002] Currently, with the increasing demand for electricity voltage, higher requirements are being placed on the insulation design of batteries.

[0003] In related technologies, batteries include a top cover and conductive components that transmit current. The conductive components are installed on the top cover. Because the creepage distance between the top cover and the conductive components is small, they are prone to forming a breakdown arc when using high voltage electricity, resulting in a high risk of insulation failure. Utility Model Content

[0004] The present invention provides a cover plate assembly and a battery to at least partially solve the above-mentioned technical problems.

[0005] In a first aspect, embodiments of the present invention provide a cover plate assembly, comprising:

[0006] Top cover;

[0007] Conductive components used to transmit current;

[0008] An insulating element is at least partially disposed between the top cover and the conductive component;

[0009] A sealing element is at least partially disposed between the top cover and the conductive component;

[0010] The insulating component and the sealing component are in contact to form a bonding interface, and at least one of the conductive component and the top cover is provided with a recessed platform that covers the edge of the bonding interface.

[0011] Optionally, in some embodiments of this application, the bonding interface has two edges spaced apart;

[0012] The sinking platform has: a first trench wall and a second trench wall;

[0013] The first and second tank walls are spaced apart, and the edge of the joint interface near the sinking platform is located between the first and second tank walls.

[0014] Optionally, in some embodiments of this application, the sinking platform further comprises:

[0015] The bottom wall is located between the first and second trench walls of the same sink platform;

[0016] The minimum distance between the edge of the joint interface near the sinking platform and the bottom wall of the same sinking platform is defined as H, and the value of H ranges from 0.1 mm to 0.6 mm.

[0017] and / or,

[0018] The minimum distance between the edge of the joint interface near the sinking platform and the first groove wall of the same sinking platform is defined as W1, and the value of W1 ranges from 0.1 mm to 0.8 mm.

[0019] The minimum distance between the edge of the joint interface near the sinking platform and the second groove wall of the same sinking platform is defined as W2, and the value of W2 ranges from 0.1 mm to 0.8 mm.

[0020] Optionally, in some embodiments of this application, the cover plate assembly includes:

[0021] The pole is inserted through the top cover;

[0022] The conductive component includes:

[0023] A crimping member for fixing the pole post to the top cover;

[0024] The bonding interface is located between the pressing member and the top cover, and the pressing member has the recessed platform.

[0025] Optionally, in some embodiments of this application, the conductive component includes:

[0026] The pole is inserted through the top cover;

[0027] The interface is located between the pole post and the top cover, and the pole post forms the recessed platform.

[0028] Optionally, in some embodiments of this application, the pole post includes: a body and a flange;

[0029] The flange is arranged around a central axis around the periphery of the body, the joint interface is located between the flange and the top cover, and the flange forms the recessed platform.

[0030] Optionally, in some embodiments of this application, the cover plate assembly includes:

[0031] A filler element that covers the edge of the bonding interface;

[0032] At least a portion of the filler is embedded in the recessed platform.

[0033] Optionally, in some embodiments of this application, the bonding interface has two edges spaced apart;

[0034] The filler includes: a first sidewall and a second sidewall;

[0035] Wherein, the edge of the joint interface near the side of the sinking platform is located between the first sidewall and the second sidewall of the same sinking platform;

[0036] The minimum distance between the edge of the joint interface near the sinking platform and the first sidewall of the same sinking platform is defined as L1, and the value of L1 ranges from 0.1 mm to 0.8 mm.

[0037] The minimum distance between the edge of the joint interface near the sinking platform and the second sidewall of the same sinking platform is defined as L2, and the value of L2 ranges from 0.1 mm to 0.8 mm.

[0038] Optionally, in some embodiments of this application, the bonding interface has two edges spaced apart;

[0039] The interface includes:

[0040] At least one extension is located between the two edges of the bonding interface;

[0041] The extension direction of the extension segment intersects the direction of the line connecting the two edges of the bonding interface.

[0042] Secondly, embodiments of the present invention provide a battery including the cover assembly described above.

[0043] The beneficial effects of the embodiments of this utility model are as follows:

[0044] In an embodiment of this utility model, at least one of the conductive component and the top cover is provided with a recessed platform, and the recessed platform covers the edge of the bonding interface, thereby increasing the creepage distance between the conductive component and the top cover, and thus reducing the risk of insulation failure. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the overall structure of the cover plate assembly provided in an embodiment of this utility model;

[0047] Figure 2 This is a schematic diagram of a portion of the cover plate assembly provided in an embodiment of this utility model;

[0048] Figure 3 This is a schematic diagram of the structure of the first bonding interface in the cover plate assembly provided by an embodiment of this utility model;

[0049] Figure 4 This is a schematic diagram of the structure of the second type of bonding interface in the cover plate assembly provided in an embodiment of this utility model;

[0050] Figure 5 This is a structural schematic diagram showing the fit between the filler and the recessed platform in the cover plate assembly provided in an embodiment of this utility model;

[0051] Figure 6 This is a structural schematic diagram of a portion of the first cover plate assembly provided in an embodiment of this utility model;

[0052] Figure 7 This is a structural schematic diagram of a portion of the second cover plate assembly provided in an embodiment of this utility model;

[0053] Figure 8 This is a schematic diagram of the structure of the filler and the pressing member in the second type of cover plate assembly provided in the embodiment of this utility model;

[0054] Figure 9 This is a structural schematic diagram of a portion of the third type of cover plate assembly provided in an embodiment of this utility model;

[0055] Figure 10 This is a structural schematic diagram of a part of the fourth cover plate assembly provided in an embodiment of this utility model;

[0056] Figure 11 This is a schematic diagram of the structure of the filler and the top cover in the fourth type of cover assembly provided in the embodiment of this utility model;

[0057] Figure 12 This is a structural schematic diagram of a portion of the fifth type of cover plate assembly provided in an embodiment of this utility model;

[0058] Figure 13 This is a structural schematic diagram of a portion of the sixth type of cover plate assembly provided in an embodiment of this utility model;

[0059] Figure 14 This is a structural schematic diagram of a portion of the seventh type of cover plate assembly provided in an embodiment of this utility model;

[0060] Figure 15 This is a structural schematic diagram of a portion of the eighth cover plate assembly provided in an embodiment of this utility model.

[0061] Explanation of reference numerals in the attached figures:

[0062] 10. Cover plate assembly; 110. Top cover; 110a. Second recessed platform; 110b. Mounting hole; 110c. Fifth recessed platform; 10a. Conductive component;

[0063] 120. Insulating component; 120a. First type of mating surface; 121. First insulating component; 122. Second insulating component;

[0064] 130. Seal; 130a. Second type of mating surface;

[0065] 200, Combined Interface; 200a, Edge; 200b, Extension Segment; 210, First Combined Interface; 220, Second Combined Interface;

[0066] 300, Settlement platform; 310, First tank wall; 320, Second tank wall; 330, Bottom wall;

[0067] 140. Terminal post; 141. Body; 141a. Fourth recessed platform; 142. Flange; 142a. Third recessed platform; 150. Crimp; 150a. First recessed platform; 160. Terminal;

[0068] 171. Electrode; 172. Collector plate;

[0069] 180. Filler; 181. First sidewall; 182. Second sidewall; 183. Inlet;

[0070] C1, central axis. Detailed Implementation

[0071] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0072] In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operating state, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms first, second, third, etc., are used merely as illustrative purposes and do not impose numerical requirements or establish a numerical order.

[0073] In this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural.

[0074] Firstly, referring to Figures 1 to 4 This application provides a cover assembly 10, including: a top cover 110, a conductive component 10a, an insulating component 120, and a sealing component 130. The top cover 110 is used to form the end of a battery; the conductive component 10a is used to transmit current, and the conductive component 10a can be mounted on the top cover 110.

[0075] It is understood that the conductive component 10a constitutes at least part of the path for current to be transmitted from the cell to the outside of the battery.

[0076] At least a portion of the insulating member 120 is disposed between the top cover 110 and the conductive member 10a, primarily for insulating the top cover 110 from the conductive member 10a. At least a portion of the sealing member 130 is disposed between the top cover 110 and the conductive member 10a, primarily for sealing the top cover 110 from the conductive member 10a to prevent external moisture from entering the battery. The sealing member 130 also serves as an insulator. The insulating member 120 and the sealing member 130 are in contact to form a bonding interface 200.

[0077] It should be noted that the insulating member 120 has a first type of mating surface 120a, and the sealing member 130 has a second type of mating surface 130a. Under the pressure of the conductive member 10a and the top cover 110, at least a portion of the first type of mating surface 120a and at least a portion of the second type of mating surface 130a come into contact to form a mating interface 200. That is, there is an interaction force between the first type of mating surface 120a and the second type of mating surface 130a at the mating interface 200. The mating interface 200 can be understood as the physical boundary or transition area between the insulating member 120 and the sealing member 130.

[0078] To clearly demonstrate the structural features and relative positional relationships of the interface 200 in this embodiment, Figure 3 The actual contact state between the first type of bonding surface 120a and the second type of bonding surface 130a is not shown in the soil example. Of course, this application does not exclude the possibility of structural gaps between the two, and the choice can be made according to actual design requirements.

[0079] At least one of the conductive component 10a and the top cover 110 is provided with a recess 300, which covers the edge 200a of the mating interface 200. The recess 300, through its placement, creates an electrical path (refer to...) formed by the conductive component 10a, the mating interface 200, and the top cover 110. Figure 2As shown by the arrows, each wall of the recessed platform 300 and the top cover 110 constitute an electrical path, which can increase the spatial distance between the conductive component 10a and the top cover 110, i.e., the electrical clearance. It can be understood that the larger the electrical clearance, the more difficult it is to cause electrical breakdown under high voltage conditions.

[0080] By adopting the above technical solution, at least one of the conductive component 10a and the top cover 110 is provided with a recessed platform 300, and the recessed platform 300 covers the edge 200a of the bonding interface 200, thereby increasing the creepage distance between the conductive component 10a and the top cover 110, thereby reducing the risk of insulation failure.

[0081] In some specific embodiments, the conductive component 10a or the top cover 110 is provided with a recessed platform 300, or both the conductive component 10a and the top cover 110 are provided with a recessed platform 300, which can be selected according to the battery design requirements.

[0082] In some specific embodiments, the elongation of the seal 130 is greater than that of the insulator 120. It is understood that while the insulator 120 performs its insulating function, it also needs to provide a certain degree of support between the top cover 110 and the conductive component 10a to stably maintain the relative position of the top cover 110 and the conductive component 10a; while the seal 130 uses a material with a larger elongation, which can improve the sealing effect with the insulator 120 under compression deformation.

[0083] In one example of this application, the lower plastic is made of polypropylene (PP) and the sealing ring is made of fluororubber.

[0084] In some embodiments of this application, reference is made to Figures 1 to 4 The interface 200 has two edges 200a spaced apart; the entire interface 200 is located between the two edges 200a, with one edge 200a located near the conductive component 10a and the other edge 200a located near the top cover 110.

[0085] The settling platform 300 has a first groove wall 310 and a second groove wall 320. The first groove wall 310 and the second groove wall 320 are spaced apart, and the edge 200a of the joint interface 200 on the side near the settling platform 300 is located between the first groove wall 310 and the second groove wall 320.

[0086] It is understood that in the direction in which the first groove wall 310 and the second groove wall 320 are spaced apart, the edge 200a of the bonding interface 200 has a gap with the first groove wall 310 and the second groove wall 320, thereby increasing the distance between the surface of the conductive component 10a or the top cover 110 and the edge 200a of the adjacent bonding interface 200.

[0087] In some embodiments of this application, reference is made to Figures 1 to 4 The settling platform 300 also has a bottom wall 330. The bottom wall 330 is located between the first groove wall 310 and the second groove wall 320 of the same settling platform 300. The minimum distance between the edge 200a of the joint interface 200 near the side of the settling platform 300 and the bottom wall 330 of the same settling platform 300 is defined as H, and the value of H ranges from 0.1 mm to 0.6 mm.

[0088] The depth of the recessed platform 300 can be represented by the distance between the edge 200a of the interface 200 and the bottom wall 330 of the same recessed platform 300. Since the setting of the recessed platform 300 will make the corresponding area of ​​the conductive component 10a or the top cover 110 thinner, the greater the depth of the recessed platform 300, the more easily the conductive component 10a or the top cover 110 will be deformed by the force during assembly; while if the depth of the recessed platform 300 is too small, the risk of insulation failure is high.

[0089] By limiting the range of H values ​​above, the bottom wall 330 and the edge 200a of the interface 200 are kept at a suitable distance to reduce the risk of insulation failure, while ensuring the structural strength of the top cover 110 or the conductive component 10a to reduce deformation.

[0090] Specifically, the value of H can be one of 0.1mm to 0.2mm, 0.2mm to 0.3mm, 0.3mm to 0.4mm, 0.4mm to 0.5mm, or 0.5mm to 0.6mm.

[0091] In some specific implementations, the value of H ranges from 0.2 mm to 0.5 mm.

[0092] In some embodiments of this application, reference is made to Figures 1 to 4 The minimum distance between the edge 200a of the interface 200 near the sinking platform 300 and the first groove wall 310 of the same sinking platform 300 is defined as W1, and the value of W1 ranges from 0.1 mm to 0.8 mm. The minimum distance between the edge 200a of the interface 200 near the sinking platform 300 and the second groove wall 320 of the same sinking platform 300 is defined as W2, and the value of W2 ranges from 0.1 mm to 0.8 mm.

[0093] It is understandable that the values ​​of W1 and W2 determine the width of the recessed platform 300. When the values ​​of W1 and W2 are too small, the first groove wall 310 and the second groove wall 320 will be too close to the edge 200a of the interface 200, increasing the risk of insulation failure. When the values ​​of W1 and W2 are too large, the contact area between the conductive component 10a or the top cover 110 and the insulating component 120 and the sealing component 130 will be reduced, resulting in a decrease in insulation and sealing effect.

[0094] By limiting the range of values ​​for W1 and W2, the risk of insulation failure is reduced while ensuring the insulation and sealing effects of the insulating component 120 and the sealing component 130.

[0095] Specifically, the value of W1 can be any one of 0.1mm to 0.2mm, 0.2mm to 0.3mm, 0.3mm to 0.4mm, 0.4mm to 0.5mm, 0.5mm to 0.6mm, 0.6mm to 0.7mm, or 0.7mm to 0.8mm. The value of W5 can be any one of 0.1mm to 0.2mm, 0.2mm to 0.3mm, 0.3mm to 0.4mm, 0.4mm to 0.5mm, 0.5mm to 0.6mm, 0.6mm to 0.7mm, or 0.7mm to 0.8mm.

[0096] In some specific implementations, the value of W1 ranges from 0.25mm to 0.5mm; the value of W2 ranges from 0.25mm to 0.5mm.

[0097] In some embodiments of this application, reference is made to Figure 1 The cover plate assembly 10 includes: a pole post 140 and a crimping member 150. The top cover 110 has a mounting hole 110b, through which the pole post 140 passes to realize current output; the crimping member 150 is used to fix the pole post 140 to the top cover 110, so that the pole post 140 is stably connected to the top cover 110.

[0098] Specifically, the crimping member 150 rivets the end of the terminal post 140 near the battery cell to the top cover 110.

[0099] In some embodiments of this application, the crimping member 150 can also be used to connect the tab 171 or the collector plate 172.

[0100] In some embodiments of this application, reference is made to Figure 1 The cover assembly 10 includes a terminal 160. The terminal 160 is used to assist in the riveting and fixing of the end of the terminal 140 away from the cell to the top cover 110, thereby improving the installation stability of the terminal 140. At the same time, the terminal 160 can also increase the conductive area of ​​the terminal 140 and increase the welding area of ​​the battery pack.

[0101] Specifically, the end of the pole 140 furthest from the battery cell is partially embedded in the terminal 160 when the riveting is pressurized.

[0102] In some embodiments of this application, reference is made to Figures 1 to 4 , Figure 6The insulating member 120 includes a first insulating member 121 and a second insulating member 122. A sealing member 130 is disposed between the first insulating member 121 and the second insulating member 122. A first bonding interface 210 is formed between the sealing member 130 and the first insulating member 121, and a second bonding interface 220 is formed between the sealing member 130 and the second insulating member 122. That is, the bonding interface 200 formed by the contact between the insulating member 120 and the sealing member 130 includes at least one of the first bonding interface 210 and the second bonding interface 220.

[0103] It is understood that the aforementioned sinking platform 300 can be set in an area corresponding to at least one of the first bonding interface 210 and the second bonding interface 220.

[0104] In some specific embodiments, the first insulating member 121 is disposed on the side of the top cover 110 near the crimping member 150 to achieve insulation between the top cover 110 and the crimping member 150. A portion of the second insulating member 122 is disposed between the terminal 160 and the top cover 110 to achieve insulation between the terminal 160 and the top cover 110. Meanwhile, another portion of the second insulating member 122 is disposed between the peripheral side of the pole post 140 and the wall of the mounting hole 110b to achieve insulation between the peripheral side of the pole post 140 and the top cover 110.

[0105] In some specific embodiments, the first insulating member 121, the second insulating member 122, and the sealing member 130 are respectively sleeved around the central axis C1 on the pole post 140, which can be the axis of the pole post 140. Correspondingly, the first bonding interface 210 and the second bonding interface 220 are respectively arranged around the central axis C1, and the recessed platform 300 is constructed with an annular groove arranged around the central axis C1.

[0106] In some embodiments of this application, reference is made to Figure 6 The conductive component 10a includes a crimping member 150; a first bonding interface 210 is located between the crimping member 150 and the top cover 110, and the crimping member 150 has a first recess 150a to cover the edge 200a of the first bonding interface 210 near the crimping member 150.

[0107] In some embodiments of this application, reference is made to Figure 9 The first bonding interface 210 is located between the crimping member 150 and the top cover 110, and a second recess 110a is formed on the side of the top cover 110 near the crimping member 150 to cover the edge 200a of the first bonding interface 210 near the top cover 110.

[0108] In some embodiments of this application, reference is made to Figures 12 to 15 The conductive component 10a includes: a terminal post 140. A bonding interface 200 is located between the terminal post 140 and the top cover 110, and the terminal post 140 has a recessed platform 300.

[0109] In some specific implementation methods, refer to Figure 12 The pole post 140 includes a body 141 and a flange 142. The flange 142 is disposed around the periphery of the body 141 around the central axis C1. The first bonding interface 210 is located between the flange 142 and the top cover 110. The flange 142 forms a third recess 142a to cover the edge 200a of the first bonding interface 210 near the flange 142.

[0110] In other specific embodiments, refer to Figure 14 The second mating interface 220 is located between the periphery of the pole post 140 and the wall of the mounting hole 110b. A fourth recess 141a is formed on the periphery of the pole post 140 to cover the edge 200a of the second mating interface 220 near the pole post 140.

[0111] In some embodiments of this application, reference is made to Figure 15 A fifth recess 110c may also be formed on the wall of the mounting hole 110b to cover the edge 200a of the second mating interface 220 near the wall of the mounting hole 110b. The fifth recess 110c is connected to the mounting hole 110b.

[0112] It should be noted that the boss in the embodiments of this application includes one or a combination of at least two of the first boss, the second boss, the third boss, the fourth boss, and the fifth boss.

[0113] In some embodiments of this application, reference is made to Figure 5 The cover plate assembly 10 includes a filler 180. The filler 180 covers the edge 200a of the mating interface 200; at least a portion of the filler 180 is embedded in the recess 300.

[0114] By employing this design, the filler 180 covers the edge 200a of the bonding interface 200, further increasing the creepage distance and thus reducing the risk of insulation failure. Furthermore, the filler 180 prevents the first insulating element 121 and the sealing element 130 from being deformed under pressure and partially entering the recessed platform 300, ensuring insulation and sealing effectiveness.

[0115] It should be noted that, referring to Figure 7 , Figure 10 and Figure 13 The filler is provided in one or at least two of the first boss, second boss, third boss, fourth boss and fifth boss.

[0116] In some embodiments of this application, reference is made to Figure 15The filler 180 includes a first sidewall 181 and a second sidewall 182. The edge 200a of the bonding interface 200 near the side of the settling platform 300 is located between the first sidewall 181 and the second sidewall 182 of the same settling platform 300.

[0117] It can be understood that the filler 180 extends from the edge 200a of the bonding interface 200 to both sides, that is, the filler 180 contacts the seal 130 and the insulating member 120 on both sides of the bonding interface 200 respectively, further extending the creepage distance.

[0118] In some embodiments of this application, reference is made to Figure 15 The minimum distance between the edge 200a of the bonding interface 200 near the sinking platform 300 and the first sidewall 181 of the same sinking platform 300 is defined as L1, and the value of L1 ranges from 0.1mm to 0.8mm. Specifically, the value of L1 can be one of 0.1mm to 0.2mm, 0.2mm to 0.3mm, 0.3mm to 0.4mm, 0.4mm to 0.5mm, 0.5mm to 0.6mm, 0.6mm to 0.7mm, or 0.7mm to 0.8mm.

[0119] The minimum distance between the edge 200a of the mating interface 200 near the settling platform 300 and the second sidewall 182 of the same settling platform 300 is defined as L2, and the value of L2 ranges from 0.1 mm to 0.8 mm. The value of L2 can be one of 0.1 mm to 0.2 mm, 0.2 mm to 0.3 mm, 0.3 mm to 0.4 mm, 0.4 mm to 0.5 mm, 0.5 mm to 0.6 mm, 0.6 mm to 0.7 mm, or 0.7 mm to 0.8 mm.

[0120] It is understood that there may be a gap or contact between the first sidewall 181 and the first groove wall 310; there may be a gap or contact between the second sidewall 182 and the second groove wall 320.

[0121] By using L1 and L2 as described above, the filler 180 has a suitable size, which can stably maintain contact with the seals 130 and the insulators 120 on both sides of the interface 200, thereby increasing the creepage distance and facilitating the assembly of the filler 180 with the recess 300.

[0122] In some specific implementations, the value of L1 ranges from 0.2 mm to 0.5 mm; the value of L2 ranges from 0.2 mm to 0.5 mm.

[0123] In some specific implementation methods, refer to Figure 8 and Figure 11The surface flatness of the filler 180 and the top cover 110 or the conductive component 10a is less than or equal to 0.2 mm, so as to avoid affecting the assembly of the insulating component 120 and the sealing component 130, and to avoid affecting the pressure deformation of the sealing component 130.

[0124] In some specific embodiments, the filler 180 can be manufactured using die-cutting or injection molding processes. More specifically, the filler 180 and the top cover 110 or the conductive component 10a are integrally injection molded together. (Refer to...) Figure 8 and Figure 11 During injection molding, the height of the gate 183 of the filler 180 is less than or equal to the height of the surface of the filler 180 near the bonding interface 200.

[0125] In some embodiments of this application, reference is made to Figure 3 and Figure 4 The interface 200 includes at least one extension segment 200b. The extension segment 200b is located between the two edges 200a of the interface 200; the extension direction of the extension segment 200b intersects the direction of the line connecting the two edges 200a of the interface 200.

[0126] It is understandable that the interface 200 can be composed of only one extension segment 200b or multiple extension segments 200b.

[0127] By adopting this scheme, the extension direction of the extension segment 200b is defined to intersect with the line direction connecting the two edges 200a of the bonding interface, thereby extending the outline length of the bonding interface and further increasing the creepage distance between the top cover 110 and the conductive component 10a.

[0128] Secondly, this application provides a battery including the cover assembly 10 as described above. The battery includes the cover assembly 10 and has all the beneficial effects of the cover assembly 10, which will not be elaborated further here.

[0129] The battery can be a square battery or a cylindrical battery, etc., and this application does not specifically limit it.

[0130] Thirdly, this application provides a vehicle that includes the aforementioned battery, and the vehicle has all the beneficial effects of the aforementioned battery, which will not be elaborated further here.

[0131] The vehicle may be a plug-in hybrid electric vehicle or a new energy vehicle, etc., and this application does not make any specific restrictions.

[0132] By using the aforementioned battery, the vehicle in this application can meet the high-voltage power requirements of the vehicle and reduce the risk of battery insulation failure.

[0133] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cover plate assembly, characterized in that, include: Top cover; Conductive components used to transmit current; An insulating element is at least partially disposed between the top cover and the conductive component; A sealing element is at least partially disposed between the top cover and the conductive component; The insulating component and the sealing component are in contact to form a bonding interface, and at least one of the conductive component and the top cover is provided with a recessed platform that covers the edge of the bonding interface.

2. The cover plate assembly according to claim 1, characterized in that, The interface has two edges spaced apart. The sinking platform has: a first trench wall and a second trench wall; The first and second tank walls are spaced apart, and the edge of the joint interface near the sinking platform is located between the first and second tank walls.

3. The cover plate assembly according to claim 2, characterized in that, The sinking platform also has: The bottom wall is located between the first and second trench walls of the same sink platform; The minimum distance between the edge of the joint interface near the sinking platform and the bottom wall of the same sinking platform is defined as H, and the value of H ranges from 0.1 mm to 0.6 mm. and / or, The minimum distance between the edge of the joint interface near the sinking platform and the first groove wall of the same sinking platform is defined as W1, and the value of W1 ranges from 0.1 mm to 0.8 mm. The minimum distance between the edge of the joint interface near the sinking platform and the second groove wall of the same sinking platform is defined as W2, and the value of W2 ranges from 0.1 mm to 0.8 mm.

4. The cover plate assembly according to claim 2, characterized in that, The cover plate assembly includes: The pole is inserted through the top cover; The conductive component includes: A crimping member for fixing the pole post to the top cover; The bonding interface is located between the pressing member and the top cover, and the pressing member has the recessed platform.

5. The cover plate assembly according to claim 2, characterized in that, The conductive component includes: The pole is inserted through the top cover; The interface is located between the pole post and the top cover, and the pole post forms the recessed platform.

6. The cover plate assembly according to claim 5, characterized in that, The pole post includes: a body and a flange; The flange is arranged around a central axis around the periphery of the body, the joint interface is located between the flange and the top cover, and the flange forms the recessed platform.

7. The cover plate assembly according to any one of claims 1 to 6, characterized in that, The cover plate assembly includes: A filler element that covers the edge of the bonding interface; At least a portion of the filler is embedded in the recessed platform.

8. The cover plate assembly according to claim 7, characterized in that, The interface has two edges spaced apart. The filler includes: a first sidewall and a second sidewall; Wherein, the edge of the joint interface near the side of the sinking platform is located between the first sidewall and the second sidewall of the same sinking platform; The minimum distance between the edge of the joint interface near the sinking platform and the first sidewall of the same sinking platform is defined as L1, and the value of L1 ranges from 0.1 mm to 0.8 mm. The minimum distance between the edge of the joint interface near the sinking platform and the second sidewall of the same sinking platform is defined as L2, and the value of L2 ranges from 0.1 mm to 0.8 mm.

9. The cover plate assembly according to any one of claims 1 to 6, characterized in that, The interface has two edges spaced apart. The interface includes: At least one extension is located between the two edges of the bonding interface; The extension direction of the extension segment intersects the direction of the line connecting the two edges of the bonding interface.

10. A battery, characterized in that, Includes the cover plate assembly as described in any one of claims 1 to 9.

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