Cover plate assembly for battery and battery

Abstract

The utility model discloses a cover plate assembly for a battery and the battery. The cover plate assembly comprises a pole, an upper insulating part and a retaining ring, wherein a first limiting part is formed on the periphery of the pole; the upper insulating part is arranged on the periphery of the pole in a sleeving manner, and a second limiting part is formed on the upper insulating part; the retaining ring is arranged at the outer end of the upper insulating part and surrounds the pole, a third limiting part matched with the first limiting part and a fourth limiting part matched with the second limiting part in a limiting manner are respectively formed on the retaining ring, and the third limiting part covers the axial outer end of the first limiting part. According to the cover plate assembly disclosed by the utility model, the second limiting part on the retaining ring covers the first limiting part on the pole, so that the poor appearance of the first limiting part can be shielded, and the appearance scrap cost of the whole cover plate assembly and even the whole battery is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cover plate assembly for a battery and a battery. Background Art

[0002] The new energy vehicle industry is booming, and batteries are crucial in these vehicles. Conventional battery terminals, riveted to the pressure plate, are too tall. A terminal flange can be used to seal the terminal itself with a riveted connection. However, this can expose the terminal flange, impacting aesthetics, resulting in a poor battery appearance and increased scrap costs. Utility Model Content

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a cover plate assembly for a battery. According to the present invention, the cover plate assembly covers the first stopper on the terminal post via the second stopper on the buckle, thereby obscuring the appearance of the first stopper, thereby reducing the appearance scrapping cost of the entire cover plate assembly and, by extension, the battery as a whole.

[0004] The utility model also provides a battery comprising the cover plate assembly.

[0005] According to the utility model, the cover plate assembly includes a pole, an upper insulating member and a buckle, the outer periphery of the pole is formed with a first limiting portion; the upper insulating member is sleeved on the outer periphery of the pole, and the upper insulating member is formed with a second limiting portion; the buckle is arranged at the outer end of the upper insulating member and is arranged around the pole, and the buckle is respectively formed with a third limiting portion that cooperates with the first limiting portion and a fourth limiting portion that cooperates with the second limiting portion, and the third limiting portion covers the axial outer end of the first limiting portion.

[0006] According to the cover plate assembly of the present invention, an upper insulating part is provided and the upper insulating part is sleeved on the outer periphery of the pole, and the buckle and the upper insulating part cooperate with each other through the second limiting part and the fourth limiting part to achieve fixation. When the buckle and the upper insulating part are fixed, the second limiting part on the buckle can cooperate with the first limiting part of the pole and block the first limiting part (that is, the riveted flange formed by rolling on the pole), thereby ensuring the stability of the cover plate assembly and improving the aesthetics of the cover plate assembly. It can block the poor appearance of the first limiting part, thereby reducing the appearance scrapping cost of the entire cover plate assembly and even the entire battery.

[0007] According to one embodiment of the present invention, the upper insulating member includes: a main body, an extension portion and a first lug, the main body is sleeved on the outer periphery of the pole; the extension portion is arranged around the top outer periphery of the main body; the first lug is constructed as a plurality of lugs arranged at intervals on the outer periphery of the extension portion, and each of the first lugs is respectively formed with the second limiting portion.

[0008] According to one embodiment of the present utility model, the retaining ring includes: a retaining ring body and a second ear, the retaining ring body is arranged around the pole and located at the top of the main body, and the inner periphery of the retaining ring body is formed with the third limiting portion; the second ear is constructed into a plurality of second ears corresponding one to one to the first ears, and the plurality of second ears are arranged at intervals on the outer periphery of the retaining ring body, and the fourth limiting portion is formed on the second ear.

[0009] According to one embodiment of the present invention, the fourth limiting portion is configured as a first groove provided on the second support ear, and the second limiting portion is configured as a protrusion provided on the first support ear and suitable for being accommodated in the first groove; wherein, at least one side wall of the first groove is provided with a flange portion extending in the radial direction, and the protrusion is provided with a convex portion protruding in the radial direction, and the convex portion abuts against the flange portion.

[0010] According to one embodiment of the present invention, the third limiting portion is constructed as a second groove arranged on the inner circumference of the retaining ring body, and the first limiting portion is constructed as a limiting block arranged on the outer circumference of the pole and at least partially protruding in the axial direction, and at least a portion of the limiting block is accommodated in the second groove.

[0011] According to one embodiment of the present invention, a third groove is formed on the inner periphery of the upper insulating member and is axially opposite to the second groove. The cover plate assembly also includes: a reinforcement member, which is arranged in the third groove and is suitable for supporting the first limiting portion.

[0012] According to one embodiment of the present invention, a first limiting surface is formed on the outer peripheral surface of the pole, and a second limiting surface and a third limiting surface that are opposite to each other in the axial direction are respectively formed on the inner periphery of the reinforcement and the inner periphery of the main body, and the second limiting surface and the third limiting surface are respectively attached to and stopped against the first limiting surface.

[0013] In some embodiments, the reinforcement may be configured as a steel ring or other metal ring.

[0014] According to one embodiment of the present invention, the cover plate assembly also includes: a lower insulating member, a polygonal limiting groove is formed at the bottom of the lower insulating member, a first through hole suitable for the pole to pass through is formed in the polygonal limiting groove, and a polygonal plate is provided at the bottom of the pole, and the polygonal plate is suitable for being accommodated in the polygonal limiting groove and stopped with the polygonal limiting groove.

[0015] According to one embodiment of the present invention, the cover assembly also includes: a cover body, which is arranged on the top of the lower insulating member, and a second through hole is formed on the cover body, which is opposite to the first through hole, and a fourth limiting surface is formed on the inner wall of the second through hole, and the fourth limiting surface is suitable for cooperating with at least part of the limiting surface of the first limiting surface.

[0016] The battery according to the present invention is briefly described below.

[0017] The battery according to the utility model includes the cover plate assembly in the above-mentioned embodiment. Since the battery according to the utility model is provided with the cover plate assembly in the above-mentioned embodiment, after the cover plate assembly is assembled to the battery, the overall aesthetics and structural stability of the battery can be improved, the poor appearance of the battery can be improved, and the cost of battery scrapping can be reduced.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a cross-sectional view of a cover plate assembly according to one embodiment of the present utility model;

[0021] Figure 2 is an exploded view of a cover plate assembly according to one embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram of a buckle according to an embodiment of the present utility model;

[0023] Figure 4 is a bottom view of a buckle according to one embodiment of the present utility model;

[0024] Figure 5 is a structural diagram of a reinforcement member according to an embodiment of the present utility model;

[0025] Figure 6 This is a structural diagram of an upper insulating member according to an embodiment of the present utility model;

[0026] Figure 7 is a bottom view of an upper insulating member according to one embodiment of the present utility model;

[0027] Figure 8 This is a structural diagram of a pole according to an embodiment of the present utility model;

[0028] Figure 9 is a cross-sectional view of a pole according to an embodiment of the present utility model;

[0029] Figure 10 is a cross-sectional view of a cover assembly according to another embodiment of the present utility model.

[0030] Reference numerals:

[0031] Cover plate assembly 1;

[0032] Buckle 10, buckle body 110, third limiting portion (second groove) 120, second lug 130, fourth limiting portion (first groove) 140, flange portion 150;

[0033] reinforcement member 20, second limiting surface 220;

[0034] Upper insulator 30 , extension portion 310 , first lug 320 , second limiting portion (bump) 321 , convex portion 322 , third groove 330 , main body 340 , third limiting surface 341 ;

[0035] Cover body 40, second through hole 410, fourth limiting surface 420;

[0036] Seal 50;

[0037] The pole 60, the polygonal plate 610, the first limiting surface 620, and the first limiting portion 630;

[0038] Lower insulating member 70, polygonal limiting groove 710, first via hole 720;

[0039] Injection molded part 80 and adhesive groove 801. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] The new energy vehicle industry is booming, and batteries are crucial in these vehicles. Conventional battery terminals, riveted to the pressure plate, are too tall. A terminal flange can be used to seal the terminal itself with a riveted connection. However, this can expose the terminal flange, impacting aesthetics, resulting in a poor battery appearance and increased scrap costs.

[0042] Reference below Figures 1-10 A cover plate assembly according to an embodiment of the present invention is described.

[0043] According to the utility model, the cover plate assembly 1 includes a pole 60, an upper insulating member 30 and a retaining ring 10, and a first limiting portion 630 is formed on the outer periphery of the pole 60; the upper insulating member 30 is sleeved on the outer periphery of the pole 60, and a second limiting portion 321 is formed on the upper insulating member 30; the retaining ring 10 is arranged at the outer end of the upper insulating member 30 and is arranged around the pole 60, and a third limiting portion 120 that cooperates with the first limiting portion 630 and a fourth limiting portion 140 that cooperates with the second limiting portion 321 are respectively formed on the retaining ring 10, and the third limiting portion 120 covers the axial outer end of the first limiting portion 630.

[0044] According to the cover plate assembly 1 of the present invention, a first stopper 630 is provided on the pole 60. The first stopper 630 can be simply understood as the riveted flange of the pole 60 in the background art, and can be formed by rolling. During the assembly process, the outer peripheral base material of the roller groove of the pole 60 is rolled outward to form the first stopper 630. Under the action of the riveting force, the first stopper 630 can compress the upper insulator 30 and other structures of the cover plate assembly 1 to form a tight sealing component of the cover plate assembly 1. The upper insulator 30 is sleeved on the outer periphery of the pole 60, and the retaining ring 10 can be provided on the top of the upper insulator 30 and can be designed to be no higher than the height of the pole 60. When the retaining ring 10 is assembled, the third stopper 120 on the retaining ring 10 directly covers the axial outer end of the first stopper 630, effectively shielding the appearance defects or unevenness that may exist in the first stopper 630 during processing, making the appearance of the entire cover plate assembly 1 more neat and beautiful.

[0045] A fourth limiting portion 140 is provided on the buckle 10. After the buckle 10 is assembled, it can also cooperate with the second limiting portion 321 on the upper insulating part 30 to further enhance the structural stability of the entire cover assembly 1. It not only improves the assembly accuracy of the assembly, but also ensures the relative position stability of each component during the operation of the battery, reducing the risk of appearance damage caused by vibration or impact.

[0046] The retaining ring 10 not only provides a shielding function but also enhances the connection stability between the terminal 60 and the retaining ring 10 through the tight fit between the third limiting portion 120 and the first limiting portion 630. This stability helps prevent the terminal 60 from loosening or deforming during use, thereby maintaining its durable appearance.

[0047] Thus, the upper insulating member 30 is sleeved on the outer periphery of the pole 60, and the retaining ring 10 and the upper insulating member 30 are fixed by cooperating with each other through the second limiting portion 321 and the fourth limiting portion 140. When the retaining ring 10 and the upper insulating member 30 are fixed, the second limiting portion 321 on the retaining ring 10 can cooperate with the first limiting portion 630 of the pole 60 and cover the first limiting portion 630, thereby ensuring the stability of the cover assembly 1 and improving the aesthetics of the cover assembly 1. It can also cover the poor appearance of the first limiting portion 630, thereby reducing the appearance scrapping cost of the entire cover assembly 1 and even the entire battery.

[0048] According to one embodiment of the present invention, the upper insulator 30 includes: a main body 340, an extension portion 310 and a first lug 320. The main body 340 is sleeved on the outer periphery of the pole 60; the extension portion 310 is arranged around the top outer periphery of the main body 340; the first lug 320 is constructed as a plurality of first lugs 320 arranged at intervals on the outer periphery of the extension portion 310, and each first lug 320 is formed with a second limiting portion 321.

[0049] The upper insulating member 30 is provided with a main body 340 on the periphery of the pole 60, effectively isolating the pole 60 from the external environment, preventing current leakage or short circuits, significantly improving the safety and stability of the battery, and enhancing the insulation effect inside the battery, which can prevent battery failures caused by poor insulation. The extension portion 310 is arranged around the top outer edge of the main body 340. This design can increase the radial thickness of the insulating component around the pole 60, further consolidating the insulation effect, while also enhancing the overall structural stability of the cover assembly 1. The extension portion 310 and the main body 340 cooperate with each other to provide a more solid support frame for the buckle 10, helping the battery resist external impact and vibration and protecting the internal components of the battery from damage.

[0050] Multiple first lugs 320 are spaced apart around the periphery of the extension 310, and each first lug 320 is formed with a second stopper 321. The provision of the first lugs 320 allows for precise positioning of the cover assembly 1 during installation or when mating with other components. The first lugs 320 can even be used to lift the entire upper insulator 30, facilitating assembly of the upper insulator 30. The second stopper 321 on the first lug 320 provides a support point for the retaining ring 10. The provision of multiple first lugs 320 provides multi-point support and stoppering, further enhancing the stability and reliability of the cover assembly 1.

[0051] At the same time, the design of the second limiting portion 321 being set on the first support ear 320 can move the design position of the second limiting portion 321 outward, thereby avoiding the second limiting portion 321 being set on the main body portion 340 or the extension portion 310 and affecting the structural strength of the upper insulating member 30 (the impact on the structural strength can be simply understood as: the second limiting portion 321 can be constructed in the form of some grooves. If the second limiting portion 321 is directly set on the extension portion 310 or the main body portion 340, slotting on the extension portion 310 or the main body portion 340 will reduce the structural strength of the upper insulating member 30).

[0052] According to one embodiment of the present invention, the retaining ring 10 includes: a retaining ring body 110 and a second lug 130. The retaining ring body 110 is arranged around the pole 60 and is located on the top of the main body 340. A third limiting portion 120 is formed on the inner periphery of the retaining ring body 110; the second lug 130 is constructed to correspond one-to-one with the first lug 320. The multiple second lugs 130 are arranged at intervals on the outer periphery of the retaining ring body 110, and a fourth limiting portion 140 is formed on the second lug 130.

[0053] The retaining ring 10 is provided with a retaining ring body 110 that surrounds the outer circumference of the terminal 60. At the same time, the retaining ring body 110 is located on the top of the main body 340, so that the main body 340 can support the retaining ring 10 and improve the stability of the retaining ring 10 after assembly. The third limiting portion 120 formed on the inner circumference of the retaining ring body 110 closely cooperates with the first limiting portion 630 on the terminal 60, effectively limiting and fixing the terminal 60 and preventing the terminal 60 from loosening or deforming during operation. By the three limiting portions and the top covering the first limiting portion 630 and cooperating with the first limiting portion 630, defects during the processing of the terminal 60 can be effectively concealed, improving the poor appearance of the entire battery and improving the safety and reliability of the entire battery system.

[0054] The second lugs 130 correspond one-to-one with the first lugs 320 and are spaced apart on the outer circumference of the buckle body 110. This allows for quick positioning of the buckle 10 and the upper insulator 30 during assembly, reducing assembly difficulty. The fourth stopper 140 on each second lug 130 cooperates with the second stopper 321 on the first lug 320 to form a multi-layered stop structure, enhancing the structural strength of the entire cover assembly 1 and reducing the risk of component loosening or damage due to vibration or impact.

[0055] According to one embodiment of the present invention, the fourth limiting portion 140 is configured as a first groove 140 provided on the second support ear 130, and the second limiting portion 321 is configured as a protrusion 321 provided on the first support ear 320 and suitable for being accommodated in the first groove 140; wherein, a radially extending flange portion 150 is provided on at least one side wall of the first groove 140, and a radially protruding convex portion 322 is provided on the protrusion 321, and the convex portion 322 abuts against the flange portion 150.

[0056] When the retaining ring 10 is mated with the upper insulating member 30, the protrusion 321 can be accommodated in the first groove 140. The soil block and the first groove 140 can abut against each other in the radial direction to limit the radial movement of the retaining ring 10 and prevent the retaining ring 10 from being separated. A radial flange portion 150 is provided on the side wall of the first groove 140. Correspondingly, a radial convex portion 322 is provided on the protrusion 321. Figure 2 As shown, when the protrusion 321 is received in the first groove 140, the protrusion 322 can abut against the flange 150 in the axial direction, effectively preventing the retaining ring 10 from axially falling off and improving the assembly stability between the retaining ring 10 and the upper insulator 30. The interaction between the flange 150 and the protrusion 322 creates a stable interlocking mechanism that can resist external vibration and impact, ensure the relative position stability of the various components of the cover plate assembly 1, and thus improve the overall safety and reliability of the battery system.

[0057] According to one embodiment of the present invention, the third limiting portion 120 is constructed as a second groove 120 arranged on the inner periphery of the retaining ring body 110, and the first limiting portion 630 is constructed as a limiting block arranged on the outer periphery of the pole 60 and at least partially protruding in the axial direction, and at least a portion of the limiting block is accommodated in the second groove 120.

[0058] By designing the second groove 120 on the inner circumference of the buckle body 110 as the third limiting portion 120, and cooperating with the limiting block (i.e., the first limiting portion 630) on the outer circumference of the pole 60, a more stable limiting effect is achieved. The limiting block is at least partially accommodated in the second groove 120. This embedded design can effectively prevent the pole 60 from moving or shaking in the axial direction, thereby enhancing the stability of the entire cover assembly 1. The close fit between the limiting block and the second groove 120 enables the buckle 10 to completely cover the first limiting portion 630 formed by rolling on the outer circumference of the pole 60, which helps to cover any processing marks or uneven surfaces that may exist on the outer circumference of the pole 60, thereby improving the appearance quality of the battery cover assembly 1.

[0059] In some embodiments, a locking flange is formed on at least one side wall of the second slot 120, and a slot can be formed on the locking block. The locking flange can be positioned with the slot on the limiting block to limit the axial movement of the buckle relative to the pole 60.

[0060] According to one embodiment of the present invention, a third groove 330 is formed on the inner periphery of the upper insulating member 30 and is axially opposite to the second groove 120 . The cover plate assembly 1 also includes: a reinforcement member 20 , which is arranged in the third groove 330 and is suitable for supporting the first limiting portion 630 .

[0061] like Figure 2 As shown, since the extension portion 310 surrounds the outer peripheral edge of the top of the main body portion 340, a third groove 330 can be formed between the top surface of the extension portion 310 and the side surface of the main body portion 340, and the third groove 330 is axially opposite to the second groove 120. During assembly, a reinforcement 20 can be set in the third groove 330. The reinforcement 20 can support the first limiting portion 630 on the pole 60. When the riveting force of the first limiting portion 630 acts on the reinforcement 20, the upper insulating member 30, the pole 60 and other structures of the cover plate assembly 1 can be more tightly matched. The reinforcement 20 can improve the structural integrity of the upper insulating member 30 and prevent the upper insulating member 30 from being damaged by force.

[0062] According to one embodiment of the present invention, a first limiting surface 620 is formed on the outer peripheral surface of the pole 60, and a second limiting surface 220 and a third limiting surface 341 that are opposite to each other in the axial direction are respectively formed on the inner periphery of the reinforcement 20 and the inner periphery of the main body 340, and the second limiting surface 220 and the third limiting surface 341 are respectively attached to and stopped against the first limiting surface 620.

[0063] Since the pole 60 is cylindrical as a whole, the first limiting surface 620 can be processed on the outer peripheral surface of the pole 60. Correspondingly, the second limiting surface 220 can be processed on the inner periphery of the reinforcement 20, and the third limiting surface 341 can also be processed on the inner periphery of the upper insulating member 30. When the cover assembly 1 is assembled, the second limiting surface 220 and the third limiting surface 341 can be respectively attached to and limited by the first limiting surface 620, which can effectively avoid relative rotation between the pole 60 and the reinforcement 20 or the pole 60 and the upper insulating member 30, thereby ensuring the stability of the entire cover assembly 1.

[0064] In addition, the design of the three limiting surfaces makes the assembly process more intuitive and simple. During assembly, it is only necessary to ensure the correct alignment and fit between the limiting surfaces, without the need for additional adjustment or fixing steps, thereby simplifying the assembly process and improving production efficiency. When the second limiting surface 220 and the third limiting surface 341 can be respectively fitted with the first limiting surface 620, an effective sealing barrier can be formed between the pole 60 and the reinforcement 20 and the upper insulating member 30, which helps prevent external impurities such as air and moisture from entering the battery, protecting the battery system from potential risks such as corrosion and short circuits.

[0065] According to one embodiment of the present invention, the cover plate assembly 1 also includes: a lower insulating member 70, a polygonal limiting groove 710 is formed at the bottom of the lower insulating member 70, a first through hole 720 suitable for the pole 60 to pass through is formed in the polygonal limiting groove 710, and a polygonal plate 610 is provided at the bottom of the pole 60, and the polygonal plate 610 is suitable for being accommodated in the polygonal limiting groove 710 and stopped with the polygonal limiting groove 710.

[0066] The provision of the lower insulating member 70 can provide additional insulation protection between the cover assembly 1 and the battery. The polygonal limiting groove 710 formed at the bottom of the lower insulating member 70 not only limits the position of the pole 60, but also effectively isolates the pole 60 from direct contact with the external environment of the battery through its insulating material, thereby preventing safety problems caused by electrical short circuits or leakage. The matching design between the polygonal limiting groove 710 and the polygonal plate 610 at the bottom of the pole 60 achieves high-precision positioning. The polygonal contact surface of the polygonal structure has better self-centering ability and anti-rotation characteristics than simple geometric shapes such as circles or squares. Therefore, this design can ensure that the pole 60 is accurately positioned during installation and maintains a stable posture during operation to prevent displacement or loosening due to vibration or impact.

[0067] During assembly, it is only necessary to pass the pole 60 through the first through-hole 720 at the bottom of the lower insulating member 70 and completely accommodate the polygonal plate 610 in the polygonal groove to achieve rapid positioning and fixation between the pole 60 and the lower insulating member 70. The assembly is simple and convenient, and no additional adjustment or fixing steps are required, thereby improving the assembly efficiency of the cover assembly 1.

[0068] According to one embodiment of the present invention, the cover assembly 1 also includes: a cover body 40, the cover body 40 is arranged on the top of the lower insulating member 70, and a second through hole 410 is formed on the cover body 40, which is opposite to the first through hole 720, and the inner wall of the second through hole 410 is formed with a fourth limiting surface 420, and the fourth limiting surface 420 is suitable for cooperating with at least part of the limiting portion of the first limiting surface 620.

[0069] The cover plate body 40 is arranged on top of the lower insulating member 70, so that the entire battery cover plate assembly 1 presents a stacked design. The stacked design not only improves the overall strength and stability of the assembly, but also makes the connection between the various components tighter, reducing the risk of loosening or damage caused by vibration or impact. The second through hole 410 formed on the cover plate body 40 is directly opposite to the first through hole 720 on the lower insulating member 70, and the inner wall of the second through hole 410 forms a fourth limiting surface 420. The fourth limiting surface 420 is limited by at least a portion of the first limiting surface 620, which helps to form an effective seal between the pole 60 and the cover plate body 40 when passing through the second through hole, preventing leakage of electrolyte or other fluids inside the battery, thereby ensuring the safety and performance stability of the battery. At the same time, it also helps to avoid relative rotation between the pole 60 and the cover plate body 40, thereby improving the stability of the structure of the entire cover plate assembly 1.

[0070] In some embodiments, a seal 50 is further provided between the upper insulating member 30 and the polygonal plate 610 . The seal 50 can seal the gap between the pole 60 and the cover body 40 , thereby improving the sealing performance of the battery.

[0071] The battery according to the present invention is briefly described below.

[0072] The battery according to the present invention includes the cover plate assembly 1 in the above embodiment. Since the battery according to the present invention is provided with the cover plate assembly 1 in the above embodiment, after the cover plate assembly 1 is assembled to the battery, the overall aesthetics and structural stability of the battery can be improved, the poor appearance of the battery can be improved, and the cost of battery scrapping can be reduced.

[0073] The battery of the present invention can be used in vehicles or other electrical equipment.

[0074] In some embodiments, the cover plate assembly 1 may not be provided with a buckle 10, and may be directly formed by external injection molding. Figure 10 As shown, the injection molded part 80 directly covers the outer surface of the counter-pole 60 and the upper insulating member 30. The injection molded part 80 is provided with a certain draft angle (e.g., 5°) to facilitate the demolding of the entire cover assembly 1. At the same time, a glue groove 801 for the injection molded part 80 is provided at the bottom of the upper insulating member 30. The injection molded part 80 can be locked into the glue groove 801, which can effectively fix the injection molded part 80 and reduce the risk of the injection molded part 80 falling off.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0076] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0077] In the description of the present invention, “plurality” means two or more.

[0078] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0079] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0080] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0081] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover assembly for a battery, characterized in that: include: A pole, wherein a first limiting portion is formed on the outer periphery of the pole; an upper insulating member, the upper insulating member being sleeved on the outer circumference of the pole, and having a second limiting portion formed on the upper insulating member; A retaining ring is arranged at the outer end of the upper insulating member and is arranged around the pole. A third limiting portion that cooperates with the first limiting portion and a fourth limiting portion that cooperates with the second limiting portion are formed on the retaining ring, and the third limiting portion covers the axial outer end of the first limiting portion.

2. The cover plate assembly for a battery according to claim 1, characterized in that: The upper insulating member comprises: a main body portion, the main body portion being sleeved on the outer circumference of the pole; an extension portion, the extension portion being disposed around the top outer periphery of the main body portion; The first supporting lug is structured as a plurality of first supporting lugs arranged at intervals on the periphery of the extension portion, and the second limiting portion is formed on each of the first supporting lugs.

3. The cover plate assembly for a battery according to claim 2, characterized in that: The buckle comprises: a buckle body, the buckle body being arranged around the pole and located on the top of the main body, the third limiting portion being formed on the inner circumference of the buckle body; The second supporting ears are structured as a plurality of second supporting ears corresponding to the first supporting ears one by one, and the plurality of second supporting ears are arranged at intervals on the outer periphery of the buckle body, and the fourth limiting portion is formed on the second supporting ears.

4. The cover plate assembly for a battery according to claim 3, characterized in that: The fourth limiting portion is configured as a first groove provided on the second support ear, and the second limiting portion is configured as a protrusion provided on the first support ear and adapted to be received in the first groove; A flange portion extending in the radial direction is provided on at least one side wall of the first groove, and a convex portion protruding in the radial direction is provided on the convex block, and the convex portion abuts against the flange portion.

5. The cover plate assembly for a battery according to claim 2, wherein: The third limiting portion is configured as a second groove provided on the inner circumference of the retaining ring body, and the first limiting portion is configured as a limiting block provided on the outer circumference of the pole and at least partially protruding in the axial direction, and at least a portion of the limiting block is accommodated in the second groove.

6. The cover plate assembly for a battery according to claim 5, characterized in that: A third groove is formed on the inner periphery of the upper insulating member and is axially opposite to the second groove. The cover assembly further includes a reinforcing member, which is disposed in the third groove and is suitable for supporting the first limiting portion.

7. The cover plate assembly for a battery according to claim 6, characterized in that: A first limiting surface is formed on the outer circumference of the pole, and a second limiting surface and a third limiting surface are respectively formed on the inner circumference of the reinforcement and the inner circumference of the main body, which are opposite to each other in the axial direction, and the second limiting surface and the third limiting surface are respectively attached to and stopped against the first limiting surface.

8. The cover plate assembly for a battery according to claim 7, characterized in that: Also includes: A lower insulating member, wherein a polygonal limiting groove is formed at the bottom of the lower insulating member, a first through hole suitable for the pole to pass through is formed in the polygonal limiting groove, and a polygonal plate is provided at the bottom of the pole, and the polygonal plate is suitable for being accommodated in the polygonal limiting groove and abutting against the polygonal limiting groove.

9. The cover plate assembly for a battery according to claim 8, characterized in that: Also includes: A cover plate is arranged on the top of the lower insulating member, and a second through hole is formed on the cover plate and is opposite to the first through hole. A fourth limiting surface is formed on the inner wall of the second through hole, and the fourth limiting surface is suitable for cooperating with at least part of the limiting surface of the first limiting surface.

10. A battery, characterized in that: The cover plate assembly comprises the cover plate assembly according to any one of claims 1 to 9.

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