Cover plate assembly and battery

Abstract

The utility model provides a cover plate assembly and a battery, and relates to the technical field of batteries. The cover plate assembly comprises a cover plate, a conductive part and an insulating part; the cover plate is connected with the insulating part, the insulating part is provided with a through hole, and the conductive part is connected with the insulating part and opposite to the through hole; and the through hole is configured to be penetrated by any one of the conductive piece and the tab, so that the conductive piece is connected with the tab. The structure of a pole, a space ring and a sealing ring is omitted, and parts of the battery cover are reduced, so that the structure of the battery cover is simplified, the material consumption of the battery cover is reduced, the assembly difficulty of the battery is reduced, the weight of a single battery cell is reduced, and the energy consumption in the running process of the whole vehicle is reduced.

Description

Technical Field

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

[0002] Power battery technology is a top priority in the development of new energy vehicle technology. The battery includes a shell and a battery cover. The battery cover is covered on the shell to form a cavity for accommodating the battery cell.

[0003] In the related art, the battery cover generally includes a conductive block, an insulating gasket, a light cover plate, a pole, a spacer, a sealing ring and a lead-out plate. The current of the battery cell passes through the pole ear and then through the lead-out plate and the pole to the conductive block. The spacer is used to clamp the pole ear to fix it; the sealing ring is used to seal the pole and the light cover plate to prevent the electrolyte from leaking; the insulating gasket is used to wrap the conductive block to insulate it.

[0004] However, in the related art, the battery cover has many parts, the structure and processing technology of the battery cover are relatively complicated, and the manufacturing cost of the battery cover is relatively high. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide a cover plate assembly and a battery, which eliminates the structure of the pole, spacer and sealing ring, reduces the components of the battery cover, and is beneficial to simplify the structure of the battery cover, reduce the material used in the battery cover, and reduce the difficulty of battery assembly, thereby helping to reduce the weight of a single battery cell and reduce the energy consumption of the entire vehicle during operation.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a cover plate assembly, which is used for a battery, wherein the battery is provided with a battery cell, and the battery cell has a pole lug; the cover plate assembly includes a cover plate, a conductive member and an insulating member, the cover plate is connected to the insulating member, the insulating member has a through hole, the conductive member is connected to the insulating member and is opposite to the through hole; the through hole is configured to allow any one of the conductive member and the pole lug to pass through, so that the conductive member is connected to the pole lug.

[0008] In a feasible implementation, the cover plate, the conductive member and the insulating member are an integral injection-molded member.

[0009] In a feasible embodiment, the insulating member includes an insulating body and an insulating boss, wherein the insulating boss is connected to a side of the insulating body facing away from the battery cell, the through hole passes through the insulating body, and the insulating boss is arranged around the through hole; the cover plate is located on a side of the insulating body facing away from the battery cell, and the cover plate is connected to the circumferential outer side of the insulating boss; the conductive member is connected to an end of the insulating boss facing away from the insulating body.

[0010] In a feasible implementation manner, the insulating boss is surrounded to form a cavity, and the cavity is configured to accommodate at least a partial structure of the pole ear.

[0011] In a feasible implementation, the inner edge of the insulating boss has a recessed groove, the conductive member is located in the recessed groove, and the conductive member protrudes from an end surface of the insulating boss on a side away from the insulating body.

[0012] In a feasible implementation, the inner edge of the through hole has an arc chamfer arranged around the circumference thereof.

[0013] In a feasible implementation, the conductive member has a protrusion at one end facing the through hole, and the end surface of the protrusion facing the battery cell is configured to be connected to the tab.

[0014] In a feasible implementation, the conductive member has an extension portion at one end facing the through hole, the extension portion passes through the through hole, and the extension portion is connected to the pole ear.

[0015] In a feasible implementation manner, the conductive member and the pole tab are welded; or, the conductive member and the pole tab are bonded by conductive adhesive.

[0016] A second aspect of an embodiment of the present application provides a battery, comprising a shell, a battery cell and a cover assembly, wherein the cover assembly and the shell are arranged to form a receiving cavity, and the battery cell is arranged in the receiving cavity.

[0017] The embodiment of the present application provides a cover plate assembly and a battery, the cover plate assembly includes a cover plate, a conductive member and an insulating member, the insulating member has a through hole, the conductive member is connected to the insulating member and is opposite to the through hole. The conductive member is connected to the pole ear. In this way, the present application can save the process of using a sealing ring to seal the cover plate in the related technology on the basis of ensuring the normal extraction of current, and also saves the step of using laser welding to weld the conductive block and the pole in the related technology, thereby minimizing the components of the battery cover, which is beneficial to simplifying the structure of the battery cover, reducing the material used in the battery cover, and greatly reducing the difficulty of assembling the battery, thereby helping to reduce the weight of a single battery cell and reduce the energy consumption of the entire vehicle during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the battery provided by the embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of the cover plate assembly of the battery provided by the embodiment of the present application Figure 1 ;

[0020] Figure 3 It is a schematic structural diagram of the cover plate assembly of the battery provided by the embodiment of the present application Figure 2 ;

[0021] Figure 4 It is a schematic internal structural diagram of the battery provided by the embodiment of the present application;

[0022] Figure 5 It is a schematic structural diagram of the cover plate assembly provided by the embodiment of the present application;

[0023] Figure 6 It is a sectional view of the cover plate assembly provided by the embodiment of the present application;

[0024] Figure 7 It is an exploded schematic diagram of the cover plate assembly provided by the embodiment of the present application Figure 1 ;

[0025] Figure 8 It is an exploded schematic diagram of the cover plate assembly provided by the embodiment of the present application Figure 2 ;

[0026] Figure 9 It is a top view of the cover plate assembly provided by the embodiment of the present application Figure 1 ;

[0027] Figure 10 It is a top view of the cover plate assembly provided by the embodiment of the present application Figure 2 ;

[0028] Figure 11 It is a top view of the cover plate assembly provided by the embodiment of the present application Figure 3 ;

[0029] Figure 12 It is Figure 11 a sectional view along the A-A direction in

[0030] Figure 13 It is a top view of the cover plate assembly provided by the embodiment of the present application Figure 4 ;

[0031] Figure 14 It is Figure 13 a sectional view along the E-E direction in

[0032] Figure 15 It is a schematic diagram of the assembly relationship between the through holes and the pole ears of the cover plate assembly provided by the embodiment of the present application;

[0033] Figure 16 This is a schematic structural view of a through hole with an arc chamfer provided by an embodiment of the present application.

[0034] Explanation of reference numerals:

[0035] 100 - Cover plate assembly;

[0036] 110 - Cover plate; 120 - Conductive member; 121 - Protrusion;

[0037] 122 - Extension portion; 130 - Insulating member; 131 - Insulating main body;

[0038] 132 - Insulating boss; 133 - Cavity; 134 - Counterbore groove;

[0039] 135 - Through hole; 136 - Arc chamfer;

[0040] 200 - Battery;

[0041] 210 - Housing; 220 - Battery cell; 230 - Tab. Detailed implementation manners

[0042] In the related art, the structure of a battery cover generally includes a conductive block, an insulating gasket, a light cover plate, a top spacer, a sealing ring, a terminal post, and an inner spacer. The current passes through the tab, sequentially reaches the lead-out piece, and then passes through the terminal post to the conductive block. To prevent the electrolyte from leaking, the terminal post and the light cover plate are sealed by a sealing ring. To prevent the light cover plate and the housing from being charged, the periphery of the conductive block is wrapped with an insulating gasket for insulation. The tab is generally welded to the lead-out piece, and the tab is clamped by an inner spacer to play a fixing role. However, the above battery cover has a relatively complex structure, numerous components, and insufficiently streamlined materials. The assembly difficulty of the battery is relatively high, the weight of a single battery cell is relatively heavy, and the energy consumption during the operation of the entire vehicle is relatively high.

[0043] In view of the above technical problems, an embodiment of the present application provides a cover plate assembly and a battery. The cover plate assembly includes a cover plate, a conductive member, and an insulating member. The insulating member has a through hole. The conductive member is connected to the insulating member and is opposite to the through hole. The conductive member is connected to the tab. In this way, on the basis of ensuring the normal extraction of the current, the present application can omit the process of using a sealing ring to seal the cover plate in the related art, and also omit the step of using laser welding to weld the conductive block and the terminal post in the related art, minimizing the components of the battery cover to the greatest extent. Thus, it is beneficial to simplify the structure of the battery cover, reduce the materials used for the battery cover, greatly reduce the assembly difficulty of the battery, and thus help to reduce the weight of a single battery cell and the energy consumption during the operation of the entire vehicle.

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following will describe in more detail the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. In the drawings, the same or similar reference numerals throughout denote the same or similar components or components with the same or similar functions. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain this application and should not be construed as limiting this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0045] Referring to Figures 1 to 4 As shown, an embodiment of this application provides a battery 200, which may include a housing 210, an electrode assembly 220, and a cover assembly 100. The cover assembly 100 and the housing 210 enclose a receiving cavity, and the electrode assembly 220 is disposed in the receiving cavity.

[0046] In an embodiment of this application, the housing 210 may be an aluminum housing or a steel housing, and this embodiment does not make any limitation thereto. The battery 200 may be a lithium-ion battery, a sodium-ion battery, or the like, and this embodiment does not make any limitation thereto.

[0047] In an embodiment of this application, referring to Figure 4 as shown, the electrode assembly 220 has tabs 230. The tabs 230 include a positive tab and a negative tab. Among them, the positions of the positive tab and the negative tab are not limited.

[0048] Exemplarily, the positive tab and the negative tab may be connected to opposite sides of the electrode assembly 220, and this embodiment does not make any limitation thereto. Correspondingly, referring to Figures 1 to 3 as shown, the cover assembly 100 may include a positive cover assembly and a negative cover assembly. Referring to Figure 1 as shown, the positive cover assembly and the negative cover assembly are buckled to opposite sides of the housing 210. The positive cover assembly is connected to the positive tab, and the negative cover assembly is connected to the negative tab.

[0049] It can be understood that, referring to Figure 2 and Figure 3 as shown, the structures of the positive cover assembly and the negative cover assembly are the same.

[0050] In this embodiment, one of the cover assemblies 100 is mainly used as an example for description.

[0051] Referring to Figures 5 to 10 as shown, an embodiment of this application provides a cover assembly 100, which may include a cover 110, a conductive member 120, and an insulating member 130.

[0052] In the embodiments of the present application, the conductive material of the cover plate 110 is not limited. Exemplarily, the material of the cover plate 110 can be a single metal, a metal alloy, or a non-metallic conductive material. Commonly used materials include pure copper, aluminum-copper composite, steel-aluminum composite, etc. This embodiment does not limit this.

[0053] In the embodiments of the present application, the conductive material of the conductive member 120 is not limited. Exemplarily, the conductive member 120 can be made of a single metal, a metal alloy, or a non-metallic conductive material. Commonly used materials include pure copper, aluminum-copper composite, steel-aluminum composite, etc. This embodiment does not limit this.

[0054] In the embodiments of the present application, the material of the insulating member 130 is not limited. Exemplarily, the material of the insulating member 130 can be an insulating material such as a plastic material, a ceramic material, or a tempered glass material, or a material with weak conductivity. This embodiment does not limit this, and the material can be selected according to actual needs.

[0055] In the embodiments of the present application, referring to Figures 5 to 8 As shown, the cover plate 110 is connected to the insulating member 130. The insulating member 130 has a through hole 135. The conductive member 120 is connected to the insulating member 130 and is opposite to the through hole 135. The through hole 135 is configured to allow either the conductive member 120 or the tab 230 to pass through, so that the conductive member 120 is connected to the tab 230.

[0056] In this embodiment, the hole shape, hole diameter, and the opening position of the through hole 135 on the insulating member 130 are not limited, and can be specifically set according to actual needs.

[0057] Exemplarily, the shape of the through hole 135 can be a circular through hole. In this embodiment, the conductive member 120 is opposite to the through hole 135. In this way, it helps the conductive member 120 to pass through and facilitates the connection with the tab 230.

[0058] In one embodiment, the through hole 135 can allow the conductive member 120 to pass through, so that the conductive member 120 is connected to the tab 230. In another embodiment, the through hole 135 can allow the tab 230 to pass through, so that the conductive member 120 is connected to the tab 230. This embodiment does not limit this.

[0059] In this way, compared with the related art where current passes through the tab, is transmitted to the lead-out piece in sequence, and then passes through the terminal post to the conductive block, in the embodiment of the present application, the cover plate, the conductive member, and the insulating member jointly form a cover plate assembly, and the conductive member is directly connected to the tab through the through hole. In this way, it not only helps to ensure the normal transmission of current and the conductivity of the conductive member, but also can omit the process of using a sealing ring to seal the cover plate in the related art and the step of using laser welding to weld the conductive block and the terminal post in the related art. The present application minimizes the components of the battery cover to the greatest extent, thereby helping to simplify the structure of the battery cover, reduce the material used for the battery cover, greatly reduce the assembly difficulty of the battery, and at the same time help to reduce the weight of a single battery cell and the energy consumption during the operation of the whole vehicle.

[0060] In an implementable embodiment, there is no limitation on the connection manner of the cover plate 110, the conductive member 120, and the insulating member 130.

[0061] In the embodiment of the present application, the cover plate 110 and the insulating member 130 can be welded, for example, the welding can be brazing; or, the cover plate 110 and the insulating member 130 can be connected by hot melting, glue bonding, etc.; or, the cover plate 110 and the insulating member 130 can be integrally injection molded into one piece.

[0062] In this embodiment, mainly taking the integrally injection molding of the cover plate 110 and the insulating member 130 as an example for illustration. In this way, a seal is directly formed between the cover plate 110 and the insulating member 130 through injection molding, which helps to indirectly omit the use of the sealing ring in the battery 200 in the related art, minimize the components of the battery cover to the greatest extent, and thus help to simplify the structure of the battery cover; in addition, it also helps to enhance the structural strength and structural stability of the cover plate assembly 100.

[0063] In the embodiment of the present application, the conductive member 120 and the insulating member 130 can be welded, for example, the welding can be brazing; or, the conductive member 120 and the insulating member 130 can be connected by hot melting, glue bonding, etc.; or, the conductive member 120 and the insulating member 130 can be integrally injection molded into one piece.

[0064] In this embodiment, mainly taking the integrally injection molding of the conductive member 120 and the insulating member 130 as an example for illustration. In this way, a seal is directly formed between the conductive member 120 and the insulating member 130 through injection molding, which helps to indirectly omit the use of the sealing ring in the battery 200 in the related art, minimize the components of the battery cover to the greatest extent, and thus help to simplify the structure of the battery cover; in addition, it also helps to enhance the structural strength and structural stability of the cover plate assembly 100.

[0065] In an implementable embodiment, referring to Figure 7 and Figure 8As shown, the insulating member 130 may include an insulating body 131 and an insulating boss 132. The insulating boss 132 is connected to a side of the insulating body 131 facing away from the battery cell 220. A through hole 135 penetrates through the insulating body 131, and the insulating boss 132 is disposed around the through hole 135.

[0066] The cover plate 110 is located on a side of the insulating body 131 facing away from the battery cell 220, and the cover plate 110 is connected to the circumferential outer side of the insulating boss 132; the conductive member 120 is connected to an end of the insulating boss 132 facing away from the insulating body 131.

[0067] In the embodiment of the present application, the connection manner between the insulating boss 132 and the insulating body 131 is not limited. Exemplarily, the insulating boss 132 and the insulating body 131 may be welded, for example, the welding may be brazing; or, the insulating boss 132 and the insulating body 131 may be connected by hot melting, glue bonding, etc.; or, the insulating boss 132 and the insulating body 131 may be integrally injection molded into one piece. This embodiment does not make a limitation in this regard.

[0068] In the embodiment of the present application, the shapes and sizes of the insulating body 131 and the insulating boss 132, and the connection position of the insulating boss 132 on the insulating body 131 are not limited, and may be specifically set according to actual needs.

[0069] In the embodiment of the present application, the cover plate 110 is located on a side of the insulating body 131 facing away from the battery cell 220. In this way, the insulating body 131 separates the cover plate 110 and the battery cell 220, thereby helping to avoid contact between the cover plate 110 and the battery cell 220 and improving the insulation performance between the cover plate 110 and the battery cell 220.

[0070] In the embodiment of the present application, the cover plate 110 is connected to the circumferential outer side of the insulating boss 132. In this way, it helps to avoid interference with the connection between the conductive member 120 and the tab 230. Among them, the connection manner between the cover plate 110 and the insulating boss 132 is not limited. Exemplarily, the cover plate 110 may be welded to the circumferential outer side of the insulating boss 132; or, the cover plate 110 may be adhered to the circumferential outer side of the insulating boss 132; or, the cover plate 110 and the insulating boss 132 may be integrally formed. This embodiment does not make a limitation in this regard.

[0071] In an implementable embodiment, referring to Figure 6 and Figure 7 as shown, the insulating boss 132 may surround to form a cavity 133, and the cavity 133 is configured to accommodate at least part of the structure of the tab 230.

[0072] Among them, at least part of the structure means that the cavity 133 may accommodate all of the structure of the tab 230, or may also accommodate part of the structure of the tab 230. This embodiment does not make a limitation in this regard.

[0073] It should be noted that the volume of the cavity 133 can be comparable to the volume of the cavity 133 of the inner spacer in the related art. In this way, the bending shape of the tab 230 in the cavity 133 is not limited to a complete "S" shape. The shape of the tab 230 is diverse and will not affect the normal conduction of the current in the battery cell 220.

[0074] In one possible implementation, referring to Figures 11 to 14 As shown, the inner edge of the insulating boss 132 may have a recessed groove 134 , the conductive member 120 is located in the recessed groove 134 , and the conductive member 120 protrudes from the end surface of the insulating boss 132 away from the insulating body 131 .

[0075] In the embodiment of the present application, the shape of the sinking groove 134 is not limited. For example, the sinking groove 134 can be an annular groove opened on the inner edge of the insulating boss 132; or, the sinking groove 134 can be a plurality of spaced ring-segment grooves opened on the inner edge of the insulating boss 132. In this embodiment, the sinking groove 134 is mainly described as an annular groove as an example, which helps to increase the contact area with the conductive member 120, thereby improving the installation stability and assembly strength of the conductive member 120, and maximizing the connection stability between the conductive member 120 and the tab 230.

[0076] In the present application, refer to Figure 12 and Figure 14 As shown, the conductive member 120 protrudes from the end surface of the insulating boss 132 which is away from the insulating body 131. The protruding height of the conductive member 120 is not limited and can be set according to actual needs.

[0077] In one possible implementation, referring to Figure 15 and Figure 16 As shown, the inner edge of the through hole 135 may have a circular chamfer 136 arranged around the circumference thereof. The number and position of the circular chamfer 136 are not limited and may be arranged according to actual needs.

[0078] In this way, the surface of the arc chamfer 136 is smooth and has no sharp edges, which helps to prevent the sharp edges of the through hole 135 from cutting the tab 230 and ensure the normal operation of the tab 230 to the greatest extent.

[0079] In the embodiments of the present application, the structure of the conductive member is not further limited and may be specifically configured with reference to the following embodiments.

[0080] In one possible implementation, referring to Figure 11 and Figure 12 As shown, one end of the conductive member 120 facing the through hole 135 may have a protrusion 121 , and the end surface of the protrusion 121 facing the battery cell 220 is configured to be connected to the tab 230 .

[0081] In the embodiments of the present application, the protrusion 121 and the conductive member 120 may be an integral part. In this way, it helps to enhance the structural strength of the conductive member 120. In the embodiments of the present application, the protrusion 121 is located on the side close to the inside of the through hole 135. It can be understood that the protrusion 121 is close to the tab 230. In this way, it helps to shorten the distance between the tab 230 and the conductive member 120, thereby helping to reduce the welding difficulty between the tab 230 and the conductive member 120, ensuring the connection stability between the tab 230 and the conductive member 120, and thus ensuring the normal transmission of current.

[0082] In an implementable embodiment, referring to Figure 13 and Figure 14 As shown, one end of the conductive member 120 facing the inside of the through hole 135 has an extension 122. The extension 122 passes through the through hole 135, and the extension 122 is connected to the tab 230.

[0083] In the embodiments of the present application, the extension 122 and the conductive member 120 may be an integral part. In this way, it helps to enhance the structural strength of the conductive member 120. In the embodiments of the present application, the extension 122 passes through the through hole 135, and the extension 122 is connected to the tab 230. In this way, on the one hand, it helps to shorten the distance between the tab 230 and the conductive member 120, thereby helping to reduce the welding difficulty between the tab 230 and the conductive member 120, ensuring the connection stability between the tab 230 and the conductive member 120, and thus ensuring the normal transmission of current; on the other hand, it helps to further prevent the problem of short circuit caused by the contact between the tab 230 and the cover plate 110, and maximally ensure the safety performance of the battery 200.

[0084] It should be noted that the structure of the conductive member 120 includes but is not limited to the above structure, and this embodiment does not limit it. Specifically, it can be set according to actual needs.

[0085] In an implementable embodiment, the connection manner between the conductive member 120 and the tab 230 is not limited.

[0086] Exemplarily, the conductive member 120 and the tab 230 may be welded together. For example, the conductive member 120 and the tab 230 may be welded by FTT (Friction Stir Welding). Among them, FTT welding is an efficient and environmentally friendly metal welding technology that connects two metal parts together through frictional heat and pressure to form a strong welded joint, which can reduce the heat input during the welding process, thereby reducing the risk of welding deformation and the heat affected zone of the material, and improving the mechanical properties of the welded joint.

[0087] Exemplarily, the conductive member 120 and the tab 230 can be adhesively connected. For example, the conductive member 120 and the tab 230 can be adhesively bonded with a conductive adhesive. Herein, the conductive adhesive is an adhesive that has a certain electrical conductivity after curing or drying. It can connect a variety of conductive materials together to form an electrical path between the connected materials.

[0088] It should be noted that the connection manner of the conductive member 120 and the tab 230 in this embodiment includes but is not limited to the above manner, and can be specifically connected according to actual needs.

[0089] The embodiment of the present application provides a cover plate assembly and a battery. The cover plate assembly includes a cover plate and a conductive member insulating member. The insulating member has a through hole. The conductive member is connected to the insulating member and is opposite to the through hole. The conductive member is connected to the tab. In this way, on the basis of ensuring the normal extraction of current, the present application can omit the process of using a sealing ring to seal the cover plate in the related art, and also omit the step of using laser welding to weld the conductive block and the pole column in the related art, minimizing the components of the battery cover to the greatest extent, thereby being beneficial to simplifying the structure of the battery cover, reducing the material used for the battery cover, greatly reducing the assembly difficulty of the battery, and thus helping to reduce the weight of a single battery cell and the energy consumption during the operation of the whole vehicle.

[0090] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0091] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0092] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0093] Furthermore, the terms "comprise" and "include" and any variation thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or apparatus that comprises a series of steps or units is not necessarily 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 apparatuses.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cover plate assembly, characterized in that, The cover plate assembly is used for a battery, wherein a battery cell is provided in the battery, and the battery cell has a tab; the cover plate assembly comprises: Cover plate; Conductive parts; The insulating member, the cover plate is connected to the insulating member, the insulating member has a through hole, the conductive member is connected to the insulating member and is opposite to the through hole; the through hole is configured to allow any one of the conductive member and the pole ear to pass through, so that the conductive member is connected to the pole ear.

2. The cover plate assembly according to claim 1, characterized in that, The cover plate, the conductive member and the insulating member are integrally formed by injection molding.

3. The cover plate assembly according to claim 1, wherein, The insulating member includes an insulating body and an insulating boss, wherein the insulating boss is connected to a side of the insulating body away from the battery cell, the through hole penetrates the insulating body, and the insulating boss is arranged around the through hole; the cover plate is located on a side of the insulating body away from the battery cell, and the cover plate is connected to the circumferential outer side of the insulating boss; the conductive member is connected to an end of the insulating boss away from the insulating body.

4. The cover plate assembly according to claim 3, wherein, The insulating boss is surrounded to form a cavity, and the cavity is configured to accommodate at least a part of the structure of the tab.

5. The cover plate assembly according to claim 3, wherein The inner edge of the insulating boss is provided with a sinking groove, the conductive member is located in the sinking groove, and the conductive member protrudes from the end surface of the insulating boss on the side away from the insulating body.

6. The cover plate assembly according to any one of claims 1-5, characterized in that, The inner edge of the through hole has a circular arc chamfer arranged around the circumference thereof.

7. The cover plate assembly according to any one of claims 1-5, characterized in that, The conductive member has a protrusion at one end facing the through hole, and the end surface of the protrusion facing the battery cell is configured to be connected to the tab.

8. The cover plate assembly according to any one of claims 1-5, characterized in that, The conductive member has an extension portion at one end facing the through hole. The extension portion passes through the through hole and is connected to the tab.

9. The cover plate assembly according to any one of claims 1-5, characterized in that, The conductive member is welded to the tab; or, the conductive member is bonded to the tab by conductive adhesive.

10. A battery, characterized in that, The battery comprises a shell, a battery cell and the cover plate assembly according to any one of claims 1 to 9, wherein the cover plate assembly and the shell are arranged to form a receiving cavity, and the battery cell is arranged in the receiving cavity.

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