Cover assembly, battery, battery pack and electric equipment

Abstract

The utility model provides a cover assembly, a battery, a battery pack and electric equipment, and relates to the technical field of batteries, the cover assembly comprises a cover body, a pole assembly and an insulation assembly, and a part of the pole assembly is inserted on the cover body. The insulation assembly comprises a first insulator and a plurality of second insulators, and the first insulator is at least partially inserted in the cover body and correspondingly arranged on the peripheral side of a part of the pole assembly in a surrounding mode. The second insulators are located on one side of the cover body, the second insulators are arranged on the peripheral side of the other part of the pole assembly in a surrounding mode, and one of the pole assembly and the first insulator is detachably connected with the second insulators. According to the cover assembly provided by the embodiment of the invention, one of the pole assembly and the first insulator is detachably connected with the second insulator, so that when the second insulator on the peripheral side of the pole assembly on the battery is damaged in the production process, the battery can be conveniently disassembled and replaced, the quality of a battery product is ensured, and the production cost is also reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cover assembly, a battery, a battery pack and an electrical device. Background Art

[0002] As a power source for transportation vehicles, batteries are widely used in new energy vehicles.

[0003] The battery generally includes a shell and a cover plate, wherein a pole is arranged on the cover plate, and an insulating gasket is arranged between the pole and the cover plate. In the related art, the cover plate and the shell are connected by laser welding to achieve packaging.

[0004] However, due to the high welding temperature, the insulating gasket is easily melted and becomes ineffective, thus affecting the quality of the battery product. Utility Model Content

[0005] Based on this, the present application provides a cover assembly, a battery, a battery pack and an electrical device to solve the problem that the insulating gasket on the cover plate is easily damaged and fails when the existing battery is welded and packaged.

[0006] In a first aspect, the present application provides a cover assembly, including a cover body, a pole assembly and an insulating assembly, wherein part of the pole assembly is inserted into the cover body;

[0007] The insulating assembly includes a first insulator and a plurality of second insulators, wherein at least a portion of the first insulator is inserted into the cover body and correspondingly arranged around a portion of the pole assembly;

[0008] The second insulator is located on one side of the cover body, and each second insulator is arranged around another part of the pole assembly. The pole assembly and one of the first insulators are detachably connected to the second insulator.

[0009] In a possible implementation, at least one first plug-in portion is provided on the second insulator, and at least one second plug-in portion is provided on one of the pole assembly and the first insulator, and the first plug-in portion is plugged into the second plug-in portion correspondingly.

[0010] In a possible implementation, one of the first plug-in portion and the second plug-in portion is a first plug-in protrusion, and the other is a first plug-in groove matching the first plug-in protrusion, and the first plug-in protrusion is plugged into the first plug-in groove.

[0011] In a possible implementation, the width of the notch of the first inserting groove is smaller than the width of the groove bottom.

[0012] In a possible implementation, a third plug-in portion is provided on one of two adjacent second insulators, and a fourth plug-in portion is provided on the other one, and the fourth plug-in portion is plugged into the third plug-in portion.

[0013] In a possible implementation, one of the third plugging part and the fourth plugging part is a second plugging protrusion, and the other is a second plugging groove that matches the second plugging protrusion, and the first plugging protrusion is plugged into the first plugging groove.

[0014] In a possible implementation, at least one second plugging protrusion is provided with a first clamping part, and the second plugging groove adjacent to the second plugging protrusion is provided with a second clamping part, and the second clamping part is clamped with the first clamping part correspondingly.

[0015] In a possible implementation, one of the first clamping part and the second clamping part is a clamping convex, and the other is a clamping groove that matches the clamping convex, and the clamping convex is clamped with the clamping groove.

[0016] In a possible implementation, the pole column assembly includes a pole column body and a connecting body connected to the pole column body, and the cover body is provided with a mounting hole;

[0017] The first insulator includes an insulating base, a part of the insulating base is inserted into the mounting hole, and the insulating base is provided with a through hole communicating with the mounting hole;

[0018] The connecting body is inserted into the through hole and the mounting hole, and the pole column body abuts against the cover body through the insulating base.

[0019] In a possible implementation, each second insulator surrounds the circumferential side of the pole column body, the first plugging part is located on the side of the second insulator facing the pole column body, and the second plugging part is located on the side of the pole column body facing the first insulator.

[0020] In a possible implementation, the side of the second insulator facing the insulating base is provided with a first positioning part, and the side of the insulating base facing the second insulator is provided with a second positioning part, and the first positioning part is connected to the second positioning part.

[0021] In a possible implementation, one of the first positioning part and the second positioning part is a positioning convex, and the other is a positioning groove that matches the positioning convex, and the positioning convex is connected to the positioning groove.

[0022] In a possible implementation, the first insulator further includes an insulating sleeve connected to the insulating base, the insulating sleeve surrounds the circumferential side of the pole column body, and each second insulator surrounds the circumferential side of the insulating sleeve;

[0023] The first plugging part is located on the side of the second insulator facing the insulating sleeve, and the second plugging part is located on the side of the insulating sleeve facing the first insulator.

[0024] In a possible implementation, the cover body is further provided with a mounting groove communicating with the mounting hole, and at least part of the insulating base is located in the mounting groove.

[0025] In a possible implementation, it further includes a seal, which is arranged in the mounting hole to seal the gap between the connecting body and the cover body.

[0026] In a second aspect, the present application further provides a battery, including a battery cell, a housing, and any one of the cover assemblies provided in the first aspect. The battery cell is arranged in the housing, and the cover body in the cover assembly covers the housing.

[0027] In a third aspect, the present application further provides a battery pack, including at least one of any one of the batteries provided in the second aspect.

[0028] In a fourth aspect, the present application further provides an electrical device, including a device body, and a battery provided in the second aspect is arranged on the device body;

[0029] Alternatively, a battery pack provided in the third aspect is arranged on the device body.

[0030] The present application provides a cover assembly, a battery, a battery pack, and an electrical device. The cover assembly includes a cover body, a pole column assembly, and an insulating assembly. Part of the pole column assembly is inserted into the cover body to introduce or lead out current. Among them, the insulating assembly includes a first insulator and a plurality of second insulators. The first insulator is at least partially inserted into the cover body and correspondingly surrounds the circumference of part of the pole column assembly to insulate between part of the circumference of the pole column assembly and the cover body. The second insulator is arranged on one side of the cover body, and each second insulator surrounds the circumference of the other part of the pole column assembly to insulate and protect the other part of the circumference of the pole column assembly. By setting that one of the pole column assembly and the first insulator is detachably connected to the second insulator, when the second insulator on the circumference of the pole column assembly on the battery is damaged during the production process, it can be conveniently disassembled and replaced without disassembling the pole column assembly and the cover body, thereby ensuring the quality of the battery product and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0032] Figure 1 It is a schematic main cross-sectional structure view of the cover assembly provided by the embodiment of the present application;

[0033] Figure 2 For Figure 1 the top view structural schematic view of the insulating assembly in

[0034] Figure 3 ForFigure 2 Cross-sectional view along the A-A section;

[0035] Figure 4 Another schematic diagram of the main cross-sectional structure of the cover assembly provided by the embodiment of the present application.

[0036] Reference numerals:

[0037] 100: Cover body;

[0038] 110: Mounting hole;

[0039] 120: Mounting groove;

[0040] 200: Terminal assembly;

[0041] 201: Terminal body;

[0042] 202: Connecting body;

[0043] 210: Second insertion part;

[0044] 300: Insulation assembly;

[0045] 310: First insulator;

[0046] 3101: Insulation substrate;

[0047] 3102: Insulation sleeve;

[0048] 311: Through hole;

[0049] 312: Second positioning part;

[0050] 320: Second insulator;

[0051] 321: First insertion part;

[0052] 322: Third insertion part;

[0053] 323: Fourth insertion part;

[0054] 324: First clamping part;

[0055] 325: Second clamping part;

[0056] 326: First positioning part;

[0057] 400: Sealing member. Detailed implementation manners

[0058] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of methods and apparatuses consistent with some aspects of the present application as detailed in the appended claims.

[0059] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0060] Currently, the aluminum shell of the blade battery and the cover plate are generally welded by laser side welding to ensure the effective connection and sealing between the aluminum shell and the cover plate. To ensure the battery performance, the pole column and the cover plate need to be insulated. Usually, the melting point of the insulating member used is relatively low, and the heat of laser side welding is relatively large, which easily melts the insulating member. When too much of the side of the insulating member melts, the side of the insulating member in contact with the cover plate melts through, and it is easy to cause battery insulation failure, resulting in battery short circuit and scrapping. In addition, laser ablation affects the appearance of the battery. The burrs and other sharp abnormal parts on the insulating member also cause defective defects in piercing the blue film in the subsequent process. This insulating member is generally riveted to the cover plate. If the appearance of this member is damaged due to laser ablation during the laser welding process and cannot be replaced flexibly, it will lead to the scrapping of the battery cell and increase the manufacturing cost.

[0061] In view of the above problems existing in the prior art, the present application provides a cover assembly, a battery, a battery pack and an electrical device. The cover assembly provided by the present application includes a cover body, a pole column assembly and an insulating assembly. Part of the pole column assembly is inserted into the cover body to introduce or lead out current. Among them, the insulating assembly includes a first insulator and a plurality of second insulators. The first insulator is at least partially inserted into the cover body and correspondingly surrounds the periphery of part of the pole column assembly to insulate between a part of the periphery of the pole column assembly and the cover body. The second insulators are arranged on one side of the cover body, and each second insulator surrounds the periphery of the other part of the pole column assembly to insulate and protect the other part of the periphery of the pole column assembly. By setting that one of the pole column assembly and the first insulator is detachably connected to the second insulator, when the second insulator on the periphery of the pole column assembly on the battery is damaged during the production process, it can be conveniently disassembled and replaced without disassembling the pole column assembly and the cover body, thus ensuring the quality of the battery product and reducing the production cost.

[0062] The technical solution of the present application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0063] In the first aspect, as shown in Figures 1 - 4 an embodiment of the present application provides a cover assembly, including a cover body 100, a pole column assembly 200 and an insulating assembly 300, and part of the pole column assembly 200 is inserted into the cover body 100.

[0064] The insulating assembly 300 includes a first insulator 310 and a plurality of second insulators 320. The first insulator 310 is at least partially inserted into the cover body 100 and correspondingly surrounds the periphery of part of the pole column assembly 200.

[0065] The second insulator 320 is located on one side of the cover body 100, and each second insulator 320 surrounds the periphery of the other part of the pole column assembly 200, and one of the pole column assembly 200 and the first insulator 310 is detachably connected to the second insulator 320.

[0066] In this embodiment, the cover body 100 is also called the cover plate or top cover of the battery, etc. It can be a rectangular or cylindrical thin plate structure, specifically matching the shape of the installation opening on the housing.

[0067] The pole column assembly 200 is used to introduce or lead out current, that is, the battery is charged through the pole column assembly 200, or the battery discharges through the pole column assembly 200. The pole column assembly 200 can be connected to the pole ear inside the battery through a bus bar. Part of the pole column assembly 200 is inserted into the cover body 100, and the insertion direction is as shown by the reverse direction of the Y-axis in Figure 1

[0068] ​The insulating component 300 can be used at least for insulating protection between the pole column component 200 and the cover body 100, and it can be made of insulating materials such as plastics. The insulating component 300 includes a first insulator 310 and a plurality of second insulators 320. Among them, the first insulator 310 can be in structures such as plate shape or block shape. The first insulator 310 can be partially inserted on the cover body 100 to insulate the circumferential side of part of the pole column component 200 and play a positioning role at the same time.

[0069] The second insulator 320 can also be in structures such as plate shape or block shape. It is located on one side of the cover body 100, and each second insulator 320 surrounds the circumference of the pole column in the pole column component 200 to insulate and protect the exposed part of the pole column component 200.

[0070] Specifically, as Figure 1 shown, the second insulator 320 and the pole column component 200 can be detachably connected by means such as plugging or clamping. Or, as Figure 4 shown, the second insulator 320 and the first insulator 310 can be detachably connected by means such as plugging or clamping. In this way, when the cover body 100 is welded to the housing and the second insulator 320 on the circumferential side of the pole column component 200 melts and is damaged, the damaged second insulator 320 can be disassembled and a new second insulator 320 can be replaced.

[0071] It can be understood that, compared with the existing integral insulating member, the application of the cover assembly in this embodiment enables the second insulator 320 on the circumferential side of the pole column component 200 on the battery to be conveniently disassembled and replaced when damaged during the production process of the battery, without disassembling the pole column component 200 and the cover body 100, thus ensuring the quality of the battery product and reducing the production cost.

[0072] Accordingly, the cover assembly provided in the embodiments of the present application includes a cover body 100, a terminal assembly 200, and an insulating assembly 300. Part of the terminal assembly 200 is inserted into the cover body 100 to introduce or lead out current. Among them, the insulating assembly 300 includes a first insulator 310 and a plurality of second insulators 320. The first insulator 310 is at least partially inserted into the cover body 100 and correspondingly surrounds the circumference of part of the terminal assembly 200 to insulate between a part of the circumference of the terminal assembly 200 and the cover body 100. The second insulators 320 are arranged on one side of the cover body 100, and each second insulator 320 surrounds the circumference of another part of the terminal assembly 200 to insulate and protect another part of the circumference of the terminal assembly. By providing that one of the terminal assembly 200 and the first insulator 310 is detachably connected to the second insulator 320, when the second insulator 320 on the circumference of the terminal assembly 200 is damaged during the production process of the battery, it can be conveniently disassembled and replaced without disassembling the terminal assembly 200 and the cover body 100, thus ensuring the quality of the battery product and reducing the production cost.

[0073] In a possible design, at least one first insertion part 321 is provided on the second insulator 320, and at least one second insertion part 210 is provided on one of the terminal assembly 200 and the first insulator 310, and the first insertion part 321 is correspondingly inserted into the second insertion part 210.

[0074] Specifically, as Figure 1 , Figure 4 shown, the first insertion part 321 and the second insertion part 210 can be detachably connected in the form of an insertion protrusion and a slot, or in the form of a plug and a socket. Moreover, one or more first insertion parts 321 and one or more second insertion parts 210 can be respectively provided, and the multiple first insertion parts 321 are correspondingly inserted into the multiple second insertion parts 210.

[0075] In this way, it is convenient to disassemble and assemble the second insulator 320. Among them, the specific type, quantity, specific installation position, etc. of the first insertion part 321 and the second insertion part 210 can be determined according to actual needs.

[0076] Exemplarily, in this embodiment, one of the first insertion part 321 and the second insertion part 210 is a first insertion protrusion, and the other is a first insertion groove matching the first insertion protrusion, and the first insertion protrusion is inserted into the first insertion groove.

[0077] Specifically, the first insertion protrusion can be a strip-shaped protrusion, and the first insertion groove can be a strip-shaped groove. In one example, as Figure 1 shown, the strip-shaped protrusion can be provided on the second insulator 320, and correspondingly, the strip-shaped groove is provided on the terminal assembly 200. In another example, as Figure 4As shown, the strip-shaped protrusions can be provided on the first insulator 310. Correspondingly, the strip-shaped grooves are provided on the second insulator 320. Such an arrangement facilitates the disassembly and assembly of the second insulator 320.

[0078] Of course, the strip-shaped protrusions can also be provided on the pole assembly 200, not shown in the figure. Correspondingly, the strip-shaped grooves are also provided on the second insulator 320. Similarly, the strip-shaped protrusions can also be provided on the second insulator 320, not shown in the figure. Correspondingly, the strip-shaped grooves are provided on the first insulator 310. In this way, it is also convenient for the disassembly and assembly of the second insulator 320. This can be determined according to actual needs and is not specifically limited in this embodiment.

[0079] Furthermore, in this embodiment, the width of the notch of the first insertion groove is smaller than the width of the groove bottom. Specifically, as Figure 1 , Figure 2 , Figure 4 shown, the notch of the first insertion groove can be in a dovetail shape. Correspondingly, the cross-section of the first insertion protrusion should also be in a matching dovetail shape.

[0080] In this way, after the first insertion protrusion is inserted into the first insertion groove, it is not easy to become disengaged. It should be noted that the total number of the second insulators 320 is an even number, and the extending directions of the strip-shaped protrusions or strip-shaped grooves on two adjacent second insulators 320 are perpendicular, so as to facilitate the insertion and installation of adjacent second insulators 320.

[0081] In some embodiments, a third insertion portion 322 is provided on one of two adjacent second insulators 320, and a fourth insertion portion 323 is provided on the other. The fourth insertion portion 323 is inserted into the third insertion portion 322.

[0082] In this way, it is convenient to fix the two adjacent second insulators 320. Among them, the fourth insertion portion 323 and the third insertion portion 322 can be inserted in the form of an insertion protrusion and a slot, or in the form of a plug and a socket.

[0083] Specifically, in this embodiment, one of the third insertion portion 322 and the fourth insertion portion 323 is a second insertion protrusion, and the other is a second insertion groove matching the second insertion protrusion. The first insertion protrusion is inserted into the first insertion groove.

[0084] As Figure 2 shown, the third insertion portion 322 is a second insertion protrusion, and the fourth insertion portion 323 is a second insertion groove matching the second insertion protrusion. Among them, the second insertion protrusion can be a strip-shaped protrusion. Correspondingly, the second insertion groove can be a strip-shaped groove. The insertion directions of the second insertion protrusion and the second insertion groove are perpendicular to the cover body 100, as shown by the reverse direction of the Y axis in Figure 1 .

[0085] It should be noted that when the extending directions of the first insertion protrusions or the first insertion grooves between two adjacent second insulators 320 are perpendicular, first install the second insulator 320 whose extending direction of the first insertion protrusion or the first insertion groove is parallel to the cover body 100, and then install the second insulator 320 whose extending direction of the first insertion protrusion or the first insertion groove is perpendicular to the cover body 100 to avoid interference.

[0086] Furthermore, in this embodiment, at least one second insertion protrusion is provided with a first clamping portion 324, and the second insertion groove adjacent to the second insertion protrusion is provided with a second clamping portion 325, and the second clamping portion 325 is correspondingly clamped with the first clamping portion 324.

[0087] With this setting, two adjacent second insulators 320 can be limited by the second clamping portion 325 and the first clamping portion 324 to avoid relative movement, thereby ensuring the stability of the insertion.

[0088] Exemplarily, in this embodiment, one of the first clamping portion 324 and the second clamping portion 325 is a clamping protrusion, and the other is a clamping groove matching the clamping protrusion, and the clamping protrusion is clamped with the clamping groove.

[0089] Specifically, as Figure 2 、 Figure 3 shown, the second insertion protrusion is provided with a clamping protrusion, and the second insertion groove is provided with a clamping groove matching the clamping protrusion, so as to achieve clamping. It should be noted that usually, since the second insulator 320 is a plastic part and is relatively thin, the clamping protrusion has a certain elastic deformation amount, so that the clamping protrusion can be deformed under pressure and inserted into the clamping groove by extrusion.

[0090] Of course, the clamping protrusion can also be provided on the second insertion groove, and correspondingly, the clamping groove can also be provided on the second insertion protrusion. In this way, clamping can also be achieved. It can be determined according to actual needs, and specific limitations are not made in this embodiment.

[0091] In some embodiments, the pole column assembly 200 includes a pole column body 201 and a connecting body 202 connected to the pole column body 201, and the cover body 100 is provided with a mounting hole 110.

[0092] The first insulator 310 includes an insulating base 3101, and a part of the insulating base 3101 is inserted into the mounting hole 110, and the insulating base 3101 is provided with a through hole 311 communicating with the mounting hole 110.

[0093] The connecting body 202 is inserted into the through hole 311 and the mounting hole 110, and the pole column body 201 abuts against the cover body 100 through the insulating base 3101.

[0094] Specifically, as Figure 1As shown, the pole column body 201 and the connecting body 202 can be connected by riveting, screwing, etc. Both of them can be in a columnar structure. The outer dimension of the pole column body 201 is larger than that of the connecting body 202, and their connection is generally in a T shape.

[0095] An installation hole 110 is provided on the cover body 100 for the connecting body 202 to be inserted therein. The insulating base 3101 can be in a plate-like structure, and a through hole 311 for the connecting body 202 to pass through is provided thereon.

[0096] Insert a part of the insulating base 3101 into the installation hole 110, and then insert the connecting body 202 into the through hole 311 and the installation hole 110 in sequence, so that the pole column body 201 abuts against the insulating base 3101.

[0097] In some embodiments, as Figure 1 shown, each second insulator 320 surrounds the circumference of the pole column body 201. The first insertion part 321 is located on the side of the second insulator 320 facing the pole column body 201, and the second insertion part 210 is located on the side of the pole column body 201 facing the first insulator 310. The first insertion part 321 and the second insertion part 210 are correspondingly inserted.

[0098] Furthermore, in this embodiment, a first positioning part 326 is provided on the side of the second insulator 320 facing the insulating base 3101, and a second positioning part 312 is provided on the side of the insulating base 3101 facing the second insulator 320. The first positioning part 326 is connected to the second positioning part 312.

[0099] With such a setting, when the second insulator 320 abuts against the insulating base 3101, the first positioning part 326 can be connected to the second positioning part 312, so that the joint is tighter and deviations and gaps are avoided.

[0100] Exemplarily, in this embodiment, one of the first positioning part 326 and the second positioning part 312 is a positioning protrusion, and the other is a positioning groove matching the positioning protrusion. The positioning protrusion is connected to the positioning groove.

[0101] Specifically, as Figure 1 、 Figure 2 shown, the first positioning part 326 is a positioning protrusion. Correspondingly, the second positioning part 312 is a positioning groove matching the positioning protrusion. The positioning protrusion is inserted into the positioning groove. Of course, the first positioning part 326 can also be a positioning groove, and correspondingly, the second positioning part 312 can be a positioning protrusion matching the positioning groove, and in this way, insertion positioning can also be achieved.

[0102] It should be noted that, as mentioned above, since the second insulator 320 is a plastic part and relatively thin, the positioning protrusion has a certain amount of elastic deformation, so that the positioning protrusion can be deformed under pressure and inserted into the positioning groove by extrusion. In order to reduce interference, the lengths of the positioning protrusion and the positioning groove can also be limited, that is, only a small section of the positioning protrusion and the positioning groove are left, so as to facilitate the disassembly and assembly of the second insulator 320.

[0103] In some other embodiments, the first insulator 310 may further include an insulating sleeve 3102 connected to the insulating base 3101. The insulating sleeve 3102 surrounds the circumference of the pole body 201, and each second insulator 320 surrounds the circumference of the insulating sleeve 3102.

[0104] The first insertion part 321 is located on one side of the second insulator 320 facing the insulating sleeve 3102, and the second insertion part 210 is located on one side of the insulating sleeve 3102 facing the first insulator 310.

[0105] Specifically, as Figure 4 shown, the insulating sleeve 3102 can be integrally formed with the insulating base 3101, and the first insertion part 321 and the second insertion part 210 are detachable. When the second insulator 320 is damaged, it is convenient to disassemble and replace.

[0106] Furthermore, in this embodiment, the cover body 100 is further provided with an installation groove 120 communicating with the installation hole 110, and at least part of the insulating base 3101 is located in the installation groove 120.

[0107] Specifically, as Figure 1 、 Figure 4 shown, the installation groove 120 is a counterbore, which matches the partial outer shape of the insulating base 3101. When the insulating base 3101 is inserted into the installation groove 120, it can play a positioning role.

[0108] In some embodiments, it further includes a sealing member 400. The sealing member 400 is arranged in the installation hole 110 to seal the gap between the connecting body 202 and the cover body 100.

[0109] Specifically, as Figure 1 、 Figure 4 shown, the sealing member 400 can be a sealing ring, which fills the gap between the connecting body 202 and the cover body 100 for sealing, so as to ensure the performance of the battery.

[0110] In a second aspect, an embodiment of the present application further provides a battery, including a battery cell, a housing, and the cover assembly provided in any of the above embodiments. The battery cell is arranged in the housing, and the cover body 100 in the cover assembly covers the housing.

[0111] Among them, the structure of the cover assembly has been described in detail in the above embodiments, and will not be elaborated here one by one.

[0112] Specifically, the battery cell may include components such as a core and tabs. An accommodation cavity is provided inside the housing for accommodating components such as the core and tabs. An installation opening is formed on one side of the housing, and the installation opening communicates with the accommodation cavity. The battery cell is loaded into the accommodation cavity through the installation opening. The pole column assembly 200 in the cover assembly can be connected to the tab through a bus bar, and the cover body 100 is disposed at the installation opening and welded and sealed, thereby completing the production of the battery cell.

[0113] It can be understood that for the battery provided in the embodiment of the present application, by configuring the cover assembly including the cover body 100, the pole column assembly 200, and the insulation assembly 300, part of the pole column assembly 200 is inserted into the cover body 100 to introduce or draw out current. Among them, the insulation assembly 300 includes a first insulator 310 and a plurality of second insulators 320. The first insulator 310 is at least partially inserted into the cover body 100 and correspondingly surrounds the periphery of part of the pole column assembly 200 to insulate between part of the peripheral side of the pole column assembly 200 and the cover body 100. The second insulators 320 are disposed on one side of the cover body 100, and each second insulator 320 surrounds the periphery of the other part of the pole column assembly 200 to provide insulation protection for the other part of the peripheral side of the pole column assembly 200. By providing that one of the pole column assembly 200 and the first insulator 310 is detachably connected to the second insulator 320, when the second insulator 320 on the periphery of the pole column assembly 200 is damaged during the production process of the battery, it can be conveniently disassembled and replaced without disassembling the pole column assembly 200 and the cover body 100, thereby ensuring the quality of the battery product and reducing the production cost.

[0114] In a third aspect, the embodiment of the present application further provides a battery pack including at least one battery provided in any of the above embodiments.

[0115] Exemplarily, the battery pack may include a plurality of the above batteries arranged side by side. Of course, the battery pack may further include a thermal management module, a controller, etc. to ensure the normal operation of the battery, and its specific components may be determined according to actual requirements.

[0116] It can be understood that for the battery pack provided in the embodiments of the present application, by configuring the battery, the battery includes a cover assembly, and the cover assembly includes a cover body 100, a pole column assembly 200, and an insulation assembly 300. A part of the pole column assembly 200 is inserted on the cover body 100 to introduce or lead out current. Among them, the insulation assembly 300 includes a first insulator 310 and a plurality of second insulators 320. The first insulator 310 is at least partially inserted on the cover body 100 and correspondingly surrounds the circumference of a part of the pole column assembly 200 to insulate between a part of the circumference of the pole column assembly 200 and the cover body 100. The second insulators 320 are arranged on one side of the cover body 100, and each second insulator 320 surrounds the circumference of another part of the pole column assembly 200 to insulate and protect another part of the circumference of the pole column assembly. By setting one of the pole column assembly 200 and the first insulator 310 to be detachably connected to the second insulator 320, when the second insulator 320 on the circumference of the pole column assembly 200 is damaged during the production process of the battery, it can be conveniently disassembled and replaced without disassembling the pole column assembly 200 and the cover body 100, thereby ensuring the quality of the battery product and reducing the production cost.

[0117] In a fourth aspect, the embodiments of the present application further provide an electrical device, including a device body, and the above-mentioned battery or battery pack provided in any of the above embodiments is arranged on the device body. Among them, the electrical device may include a new energy vehicle, an energy storage device, etc.

[0118] It can be understood that for the vehicle provided in the embodiments of the present application, by configuring the above-mentioned battery or a battery pack having the battery, the battery includes a cover assembly, and the cover assembly includes a cover body 100, a pole column assembly 200, and an insulation assembly 300. A part of the pole column assembly 200 is inserted on the cover body 100 to introduce or lead out current. Among them, the insulation assembly 300 includes a first insulator 310 and a plurality of second insulators 320. The first insulator 310 is at least partially inserted on the cover body 100 and correspondingly surrounds the circumference of a part of the pole column assembly 200 to insulate between a part of the circumference of the pole column assembly 200 and the cover body 100. The second insulators 320 are arranged on one side of the cover body 100, and each second insulator 320 surrounds the circumference of another part of the pole column assembly 200 to insulate and protect another part of the circumference of the pole column assembly. By setting one of the pole column assembly 200 and the first insulator 310 to be detachably connected to the second insulator 320, when the second insulator 320 on the circumference of the pole column assembly 200 is damaged during the production process of the battery, it can be conveniently disassembled and replaced without disassembling the pole column assembly 200 and the cover body 100, thereby ensuring the quality of the battery product and reducing the production cost.

[0119] Other embodiments of the present application will be readily contemplated by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the claims.

[0120] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A cover assembly, characterized in that: include: Cover body (100); A pole assembly (200), a portion of which is inserted into the cover body (100); An insulating assembly (300), the insulating assembly (300) comprising a first insulator (310) and a plurality of second insulators (320), wherein the first insulator (310) is at least partially inserted on the cover (100) and correspondingly arranged around a portion of the circumference of the pole assembly (200); The second insulator (320) is located on one side of the cover body (100), and each of the second insulators (320) is arranged around another part of the pole assembly (200), and the pole assembly (200) and one of the first insulators (310) are detachably connected to the second insulator (320).

2. The cover assembly according to claim 1, characterized in that At least one first plug-in portion (321) is provided on the second insulator (320), and at least one second plug-in portion (210) is provided on one of the pole assembly (200) and the first insulator (310), and the first plug-in portion (321) is correspondingly plugged with the second plug-in portion (210).

3. The cover assembly according to claim 2, characterized in that One of the first plug-in portion (321) and the second plug-in portion (210) is a first plug-in protrusion, and the other is a first plug-in groove matching the first plug-in protrusion, and the first plug-in protrusion is plugged into the first plug-in groove.

4. The cover assembly according to claim 3, characterized in that The width of the notch of the first inserting groove is smaller than the width of the groove bottom.

5. The cover assembly according to claim 4, characterized in that One of the two adjacent second insulators (320) is provided with a third plug-in portion (322), and the other is provided with a fourth plug-in portion (323), and the fourth plug-in portion (323) is plugged into the third plug-in portion (322).

6. The cover assembly according to claim 5, characterized in that One of the third plug-in portion (322) and the fourth plug-in portion (323) is a second plug-in protrusion, and the other is a second plug-in groove matching the second plug-in protrusion, and the first plug-in protrusion is plugged into the first plug-in groove.

7. The cover assembly according to claim 6, characterized in that At least one of the second plug-in protrusions is provided with a first clamping portion (324), and the second plug-in groove adjacent to the second plug-in protrusion is provided with a second clamping portion (325), and the second clamping portion (325) is correspondingly clamped with the first clamping portion (324).

8. The cover assembly according to claim 7, characterized in that One of the first clamping portion (324) and the second clamping portion (325) is a clamping protrusion, and the other is a clamping slot matching the clamping protrusion, and the clamping protrusion is clamped with the clamping slot.

9. The cover assembly according to any one of claims 2 to 8, characterized in that: The pole assembly (200) comprises a pole body (201) and a connector (202) connected to the pole body (201); and a mounting hole (110) is provided on the cover body (100); The first insulator (310) comprises an insulating base (3101), a portion of the insulating base (3101) is inserted into the mounting hole (110), and a through hole (311) communicating with the mounting hole (110) is provided on the insulating base (3101); The connecting body (202) is inserted into the through hole (311) and the mounting hole (110), and the pole body (201) is in contact with the cover body (100) via the insulating base (3101).

10. The cover assembly according to claim 9, characterized in that Each second insulator (320) is arranged around the pole body (201), the first plug-in portion (321) is located on the side of the second insulator (320) facing the pole body (201), and the second plug-in portion (210) is located on the side of the pole body (201) facing the first insulator (310).

11. The cover assembly according to claim 10, characterized in that A first positioning portion (326) is provided on the side of the second insulator (320) facing the insulating base (3101), and a second positioning portion (312) is provided on the side of the insulating base (3101) facing the second insulator (320), and the first positioning portion (326) is connected to the second positioning portion (312).

12. The cover assembly according to claim 11, characterized in that One of the first positioning portion (326) and the second positioning portion (312) is a positioning protrusion, and the other is a positioning groove matching the positioning protrusion, and the positioning protrusion is connected to the positioning groove.

13. The cover assembly according to claim 9, characterized in that The first insulator (310) further comprises an insulating sleeve (3102) connected to the insulating base (3101), the insulating sleeve (3102) being arranged around the circumference of the pole body (201), and each of the second insulators (320) being arranged around the circumference of the insulating sleeve (3102); The first plug-in portion (321) is located on a side of the second insulator (320) facing the insulating sleeve (3102), and the second plug-in portion (210) is located on a side of the insulating sleeve (3102) facing the first insulator (310).

14. The cover assembly according to claim 9, characterized in that The cover body (100) is also provided with a mounting groove (120) which is in communication with the mounting hole (110), and at least a portion of the insulating base (3101) is located in the mounting groove (120).

15. The cover assembly according to claim 9, characterized in that It also includes a sealing member (400), which is arranged in the mounting hole (110) to seal the gap between the connecting body (202) and the cover body (100).

16. A battery, characterized in that: The invention comprises a battery cell, a shell and a cap assembly as claimed in any one of claims 1 to 15, wherein the battery cell is arranged in the shell, and the cap body (100) in the cap assembly is covered on the shell.

17. A battery pack, characterized in that: Comprising at least one battery as claimed in claim 16.

18. An electrical equipment, characterized in that: comprising a device body, on which the battery according to claim 16 is arranged; Alternatively, a battery pack as described in claim 17 is disposed on the device body.

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