Top cover assembly, single cell, battery pack and electrical equipment

Abstract

The present application discloses a top cover assembly, a single cell, a battery pack and an electrical device, and relates to the technical field of electrical devices. The top cover assembly includes a top cover sheet, a first connector, a second connector, a first insulating member and a second insulating member. The first connector is arranged on one side of the top cover sheet; the second connector is arranged on the side of the top cover sheet away from the first connector, and the second connector is connected to the first connector; the first insulating member is arranged between the first connector and the top cover sheet; the second insulating member is located between the second connector and the top cover sheet; the first connector includes a first terminal, and the first terminal includes a first connecting block and a first pole block, the first connecting block is arranged on the side of the first connector away from the second connector, the first pole block is arranged at one end of the first connecting block close to the second connecting member, the first pole block protrudes from the first connecting block, and the first connecting block is integrally formed with the first pole block. The present application can reduce the number of components, simplify the process, and reduce cost and weight.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a top cover assembly, a single cell, a battery pack and electrical equipment. Background Art

[0002] At present, new energy batteries are in a stage of rapid development. Clients require that on the premise of safety, the energy density of the battery cells must be high and the cost of the battery cells must be low.

[0003] The cost of the battery cell is mainly concentrated on the top cover. Among the components of the top cover on the positive side, the terminal and the pole are two separate parts, that is, the terminal and the pole are separated, which leads to many components and heavy weight. The assembly process includes riveting and two laser welding steps, that is, the top cover assembly process is complicated and the assembly cost is high. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a top cover assembly, a single cell, a battery pack and an electrical device, aiming to solve the technical problems in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a top cover assembly, comprising:

[0007] Top cover piece;

[0008] A first connecting member, wherein the first connecting member is arranged on one side of the top cover sheet;

[0009] A second connecting member, the second connecting member is arranged on a side of the top cover sheet away from the first connecting member, the second connecting member is penetrated through the top cover sheet, the second connecting member is connected to the first connecting member, and the second connecting member is used to connect the first connecting member to the tab;

[0010] a first insulating member, the first insulating member being disposed between the first connecting member and the top cover sheet, and the first insulating member being used to prevent the first connecting member from being electrically connected to the top cover sheet;

[0011] a second insulating member, the second insulating member being arranged on a side of the top cover sheet away from the first connecting member, the second insulating member being located between the second connecting member and the top cover sheet, and being used to prevent the second connecting member from being electrically connected to the top cover sheet;

[0012] Among them, the first connecting member includes a first terminal, the first terminal includes a first connecting block and a first pole block, the first connecting block is arranged on a side of the first connecting member away from the second connecting member, the first pole block is arranged at an end of the first connecting block close to the second connecting member, the first pole block protrudes from the first connecting block, the first connecting block and the first pole block are integrally formed, the first pole block is used to connect to the second connecting member, and the first connecting block is used to connect to an external battery cell.

[0013] In one embodiment of the first aspect, the top cover sheet has a first through hole and a second through hole, the second through hole is arranged on one side of the first through hole, and the axes of the first through hole and the second through hole are parallel;

[0014] The first terminal is inserted into the first through hole, and the first connector further includes a second terminal, and the second terminal is inserted into the second through hole.

[0015] In one embodiment of the first aspect, the second terminal comprises:

[0016] a second connection block, the second connection block being arranged on a side of the second terminal away from the second connection member, the second connection block being used to connect to the external battery cell;

[0017] A second pole block, wherein the second pole block is arranged at one end of the second connecting block close to the second connecting piece, the second pole block protrudes from the second connecting block, the second pole block is integrally formed with the second connecting block, and the second pole block is used to be connected to the second connecting piece.

[0018] In one embodiment of the first aspect, the second connecting member comprises:

[0019] a first connecting piece, the first connecting piece being arranged on a side of the second insulating member away from the top cover piece, the first connecting piece being arranged corresponding to the first terminal, and the first connecting piece being connected to the first terminal;

[0020] The second connecting piece is arranged on a side of the second insulating member away from the top cover piece, the second connecting piece is located on a side of the first connecting piece, the second connecting piece is arranged corresponding to the second terminal, and the second connecting piece is connected to the second terminal.

[0021] In one embodiment of the first aspect, the first connecting piece includes:

[0022] a first sealing edge, the first sealing edge being arranged on a side of the first connecting piece close to the second insulating member;

[0023] A first protruding block, wherein the first protruding block is arranged on a side of the first sealing edge close to the second insulating member, the first protruding block penetrates the second insulating member and the first through hole, the first protruding block is arranged corresponding to the first terminal, and the first protruding block is connected to the first terminal.

[0024] In one embodiment of the first aspect, the second connecting piece includes:

[0025] a second sealing edge, the second sealing edge being located on a side of the second connecting piece close to the second insulating member;

[0026] A second protruding block, wherein the second protruding block is arranged on a side of the second sealing edge close to the second insulating member, the second protruding block penetrates the second insulating member and the second through hole, the second protruding block is arranged corresponding to the second terminal, and the second protruding block is connected to the second terminal.

[0027] In one embodiment of the first aspect, the top cover assembly further comprises:

[0028] A first sealing ring, which is disposed in the first through hole and located between the first connecting sheet and the top cover sheet, and is used to seal between the first connecting sheet and the top cover sheet;

[0029] A second sealing ring is disposed in the second through hole and is located between the second connecting piece and the top cover piece. The second sealing ring is used for sealing between the second connecting piece and the top cover piece.

[0030] In a second aspect, an embodiment of the present application provides a single cell battery, comprising the top cover assembly described in any of the above embodiments.

[0031] In a third aspect, an embodiment of the present application provides a battery pack, comprising a single cell as described in any of the above embodiments.

[0032] In a fourth aspect, an embodiment of the present application provides an electrical device, comprising the battery pack described in any of the above embodiments.

[0033] Compared with the prior art, the beneficial effects of the present application are as follows: the present application proposes a top cover assembly, a single cell, a battery pack and an electrical device. Among them, the top cover assembly includes a top cover sheet, a first connector, a second connector, a first insulating member and a second insulating member. The first connector is arranged on one side of the top cover sheet, and the second connector is arranged on the side of the top cover sheet away from the first connector, the second connector is passed through the top cover sheet, and the second connector is connected to the first connector. By arranging the first insulating member between the first connector and the top cover, the first connector and the top cover sheet are isolated, and the second insulating member is located between the second connector and the top cover sheet to isolate the second connector and the top cover sheet. In addition, the first connecting member includes a first terminal, and the first terminal includes a first connecting block and a first pole block. The present application arranges the first connecting block on a side of the first connecting member away from the second connecting member, and the first pole block is arranged at an end of the first connecting block close to the second connecting member, wherein the first pole block is used to connect to the second connecting member, and the first connecting block is used to connect to an external battery cell. The present application makes the first pole block protrude from the first connecting block, and the first connecting block and the first pole block are integrally formed, so that the first connecting block is integrated with the first pole block, reducing the number of components, simplifying the process, reducing material and process costs, and reducing the weight of the top cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A three-dimensional structural schematic diagram of the top cover assembly in the present application is shown;

[0036] Figure 2 A schematic diagram of the structure of the top cover assembly from one perspective in the present application is shown;

[0037] Figure 3 A schematic diagram of the exploded structure of the top cover assembly in the present application is shown;

[0038] Figure 4 A partial structural schematic diagram of the top cover assembly in the present application is shown;

[0039] Figure 5 Another partial structural schematic diagram of the top cover assembly in the present application is shown;

[0040] Figure 6 A schematic diagram of the three-dimensional structure of the first connecting piece in the present application is shown;

[0041] Figure 7Another three-dimensional structural schematic diagram of the first connecting piece in the present application is shown.

[0042] Description of main component symbols:

[0043] 100-top cover assembly; 110-top cover sheet; 111-first through hole; 112-second through hole; 120-first connecting member; 121-first terminal; 1211-first connecting block; 1211a-first positioning hole; 1212-first pole block; 122-second terminal; 1221-second connecting block; 1221a-second positioning hole; 1222-second pole block; 130-second connecting member; 131-first connecting piece; 1311-first sealing edge; 1312-first protruding block; 1312a-first welding hole; 1312b-first groove; 132-second connecting piece; 140-first insulating member; 141-first plastic; 142-second plastic; 150-second insulating member; 151-third through hole; 152-fourth through hole; 160-first sealing ring; 170-second sealing ring. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, 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 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 application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present application provides a top cover assembly 100. The top cover assembly 100 includes a top cover sheet 110, a first connecting member 120, a second connecting member 130, a first insulating member 140 and a second insulating member 150.

[0050] The first connecting member 120 is disposed on one side of the top cover sheet 110 , and the second connecting member 130 is disposed on a side of the top cover sheet 110 away from the first connecting member 120 .

[0051] Specifically, the second connector 130 is connected to the first connector 120 by penetrating the top cover sheet 110. In this embodiment, the second connector 130 is used to connect the first connector 120 to the tab.

[0052] In addition, the first insulating member 140 is disposed between the first connecting member 120 and the top cover sheet 110 , and the first insulating member 140 is used to prevent the first connecting member 120 from being electrically connected to the top cover sheet 110 , that is, to isolate the first connecting member 120 from the top cover sheet 110 .

[0053] The second insulating member 150 is arranged on the side of the top cover sheet 110 away from the first connecting member 120, and the second insulating member 150 is located between the second connecting member 130 and the top cover sheet 110. In this embodiment, the second insulating member 150 is used to prevent the second connecting member 130 from being electrically connected to the top cover sheet 110.

[0054] Specifically, the first connecting member 120 includes a first terminal 121, and the first terminal 121 includes a first connecting block 1211 and a first pole block 1212, the first connecting block 1211 is arranged on a side of the first connecting member 120 away from the second connecting member 130, and the first pole block 1212 is arranged at an end of the first connecting block 1211 close to the second connecting member 130.

[0055] Among them, the first pole block 1212 protrudes from the first connecting block 1211, and the first connecting block 1211 and the first pole block 1212 are integrally formed. This embodiment is connected to the second connecting piece 130 through the first pole block 1212, and is connected to the external battery cell through the first connecting block 1211.

[0056] Optionally, the first pole block 1212 and the second connecting member 130 are connected to each other, for example, by laser welding.

[0057] In the related art, among the components of the positive electrode side top cover, the terminal and the pole are two separate parts, that is, the terminal and the pole are separated, resulting in many components, heavy weight, and a complicated top cover assembly process, requiring the connecting piece and the pole to be laser welded, and the terminal and the pole to be assembled by riveting and laser welding, that is, the assembly process includes riveting and two laser welding steps, and the assembly cost is relatively high.

[0058] In this embodiment, the top cover assembly 100 includes a top cover sheet 110, a first connector 120, a second connector 130, a first insulating member 140, and a second insulating member 150. In this embodiment, the first pole block 1212 is set to protrude from the first connecting block 1211, and the first connecting block 1211 and the first pole block 1212 are integrally formed, so that the first connecting block 1211 and the first pole block 1212 are integrated, reducing the number of parts. At the same time, the first terminal 121 and the second connecting sheet 132 only need to be connected by laser welding, which simplifies the process, reduces the material and process costs, and reduces the weight of the top cover assembly 100.

[0059] Alternatively, if Figure 3As shown, the top cover sheet 110 has a first through hole 111 and a second through hole 112 . The second through hole 112 is disposed on one side of the first through hole 111 . The axis of the first through hole 111 is parallel to the axis of the second through hole 112 .

[0060] Among them, Figure 4 As shown, the first terminal 121 is disposed in the first through hole 111 , and the first connector 120 further includes a second terminal 122 , and the second terminal 122 is disposed in the second through hole 112 .

[0061] Optionally, the material of the first terminal 121 is, for example, pure aluminum. When the first terminal 121 is, for example, pure aluminum, that is, the first connection block 1211 and the first pole block 1212 are both pure aluminum.

[0062] Alternatively, if Figure 5 As shown, a first positioning hole 1211a is provided on the side of the first connection block 1211 away from the top cover sheet 110, and the axis of the first positioning hole 1211a is parallel to the axis of the first through hole 111. In this embodiment, the first positioning hole 1211a is used to weld the connection sheet between two battery cells.

[0063] Alternatively, if Figure 3 , Figure 4 and Figure 5 As shown, the second terminal 122 includes a second connection block 1221 and a second pole block 1222 .

[0064] The second connection block 1221 is disposed on a side of the second terminal 122 away from the second connection member 130 , and the second connection block 1221 is used to connect to the external battery cell.

[0065] Alternatively, if Figure 5 As shown, the second connection block 1221 has a second positioning hole 1221a on one side away from the top cover sheet 110, and the axis of the second positioning hole 1221a is parallel to the axis of the second through hole 112. In this embodiment, the second positioning hole 1221a is used to weld and position the connection sheet to be welded between two battery cells.

[0066] Specifically, the second pole block 1222 is disposed at one end of the second connection block 1221 close to the second connection member 130. The second pole block 1222 protrudes from the second connection block 1221, that is, the second pole block 1222 and the second connection block 1221 form a step structure.

[0067] It should be noted that the second pole block 1222 and the second connection block 1221 are integrally formed. In this embodiment, the second pole block 1222 is connected to the second connection member 130 by laser welding, for example.

[0068] Optionally, the material of the second terminal 122 may be, for example, pure aluminum, pure copper, or a copper-aluminum composite plate. When the second terminal 122 is, for example, pure aluminum, that is, the second connection block 1221 and the second pole block 1222 are both pure aluminum, when the second terminal 122 is, for example, pure copper, that is, the second connection block 1221 and the second pole block 1222 are both pure copper, when the second terminal 122 is, for example, a copper-aluminum composite plate, that is, the second connection block 1221 is aluminum, and the second pole block 1222 is copper.

[0069] In the related art, the forming process of the pole is usually stamping and CNC (Computer Numerical Control), among which the stamping material utilization rate is low and the CNC cost is high.

[0070] In the present embodiment, the forming process of the first terminal 121 and the second terminal 122 is, for example, punching and cold heading. Specifically, by blanking the sheet and punching the cylindrical blank, the mold cold heads and extrude the positioning hole, that is, the first positioning hole 1211a of the first terminal 121 is formed, or the second positioning hole 1221a of the second terminal 122 is formed. Furthermore, the mold cold heads the blank multiple times to form a terminal boss, which is, for example, the first pole block 1212 of the first terminal 121, or the second pole block 1222 of the second terminal 122. Then, the blank is punched by the mold to form a terminal of the required size, that is, the first terminal 121 and the second terminal 122 of the present embodiment. The present embodiment forms the first terminal 121 and the second terminal 122 by combining cold heading and punching, and the material utilization rate is above 85%, which greatly reduces the cost of the top cover assembly 100, and the process is simple.

[0071] In this embodiment, the first terminal 121 is, for example, a positive terminal, and the second terminal 122 is, for example, a negative terminal.

[0072] Alternatively, if Figure 3 and Figure 4 As shown, the second connecting member 130 includes a first connecting piece 131 and a second connecting piece 132 .

[0073] The first connecting piece 131 is disposed on a side of the second insulating member 150 away from the top cover piece 110 , the first connecting piece 131 is disposed correspondingly to the first terminal 121 , and the first connecting piece 131 is connected to the first terminal 121 by, for example, laser welding.

[0074] In addition, the second connecting piece 132 is arranged on the side of the second insulating member 150 away from the top cover piece 110, the second connecting piece 132 is located on one side of the first connecting piece 131, and the second connecting piece 132 is arranged corresponding to the second terminal 122, and the second connecting piece 132 is connected to the second terminal 122, and the connection method is, for example, laser welding.

[0075] Alternatively, if Figure 3 and Figure 5 As shown, the top cover assembly 100 further includes a first sealing ring 160 and a second sealing ring 170 .

[0076] The first sealing ring 160 is disposed in the first through hole 111 , and is located between the first connecting piece 131 and the top cover piece 110 . The first sealing ring 160 is used to seal between the first connecting piece 131 and the top cover piece 110 .

[0077] In addition, the second sealing ring 170 is disposed in the second through hole 112 , and the second sealing ring 170 is located between the second connecting piece 132 and the top cover piece 110 , and the second sealing ring 170 is used to seal between the second connecting piece 132 and the top cover piece 110 .

[0078] Alternatively, if Figure 3 , Figure 4 and Figure 5 As shown, the first insulating member 140 includes a first plastic 141 and a second plastic 142 .

[0079] The first plastic 141 is disposed in the first through hole 111 and is located between the first terminal 121 and the top cover sheet 110 , and the second plastic 142 is disposed in the second through hole 112 and is located between the second terminal 122 and the top cover sheet 110 .

[0080] Specifically, the first plastic 141 is used to isolate the first terminal 121 and the top cover sheet 110 to avoid electrical connection between the first terminal 121 and the top cover sheet 110 , and the second plastic 142 is used to isolate the second terminal 122 and the top cover sheet 110 to avoid electrical connection between the second terminal 122 and the top cover sheet 110 .

[0081] Alternatively, if Figure 3 As shown, the second insulating member 150 has a third through hole 151 and a fourth through hole 152, the third through hole 151 is arranged corresponding to the first through hole 111, the axis of the third through hole 151 is parallel to or coincides with the axis of the first through hole 111, and the axis of the fourth through hole 152 is parallel to or coincides with the axis of the second through hole 112.

[0082] Optionally, the second insulating member 150 is, for example, plastic. In this embodiment, the first connecting piece 131 and the top cover piece 110 can be isolated from each other through the second insulating member 150 , and the second connecting piece 132 and the top cover piece 110 can be isolated from each other.

[0083] Alternatively, if Figure 5 , Figure 6 and Figure 7 As shown, the first connecting piece 131 includes a first sealing edge 1311 and a first protruding block 1312 .

[0084] The first sealing edge 1311 is disposed on a side of the first connecting piece 131 close to the second insulating member 150. In this embodiment, the first sealing edge 1311 compresses the first sealing ring 160, thereby improving the sealing performance of the top cover assembly 100.

[0085] In addition, the first protruding block 1312 is arranged on a side of the first sealing edge 1311 close to the second insulating member 150, and the first protruding block 1312 is penetrated through the second insulating member 150 and the first through hole 111, the first protruding block 1312 is correspondingly arranged with the first terminal 121, and the first protruding block 1312 is connected with the first terminal 121, that is, the first protruding block 1312 is sequentially penetrated through the third through hole 151 and the first through hole 111, and then laser welded with the first pole block 1212.

[0086] Alternatively, if Figure 6 and Figure 7 As shown, the first protruding block 1312 has a first welding hole 1312a on one side close to the first pole block 1212, and has a first groove 1312b on one side of the first protruding block 1312 away from the first connector 120. In this embodiment, the first groove 1312b is formed on the first connecting piece 131 by a stamping process, thereby forming the first protruding block 1312. In this embodiment, the structural strength of the first protruding block 1312 and the first sealing edge 1311 is increased by stamping, and the sealing performance of the top cover assembly 100 is further improved.

[0087] The first terminal 121 is laser welded and clamped in the first welding hole 1312a by the first pole block 1212, which not only connects the first terminal 121 to the first connecting piece 131, but also ensures the sealing of the top cover assembly 100 of this embodiment.

[0088] Optionally, the thickness of the first connecting piece 131 ranges from 0.8 mm to 2.5 mm. Preferably, the thickness of the first connecting piece 131 is 1.2 mm, 2 mm or 2.5 mm, and its Brinell hardness is greater than 25, for example.

[0089] Alternatively, if Figure 5 As shown, the second connecting piece 132 includes a second sealing edge and a second protruding block.

[0090] The second sealing edge is located on a side of the second connecting piece 132 close to the second insulating member 150. In this embodiment, the second sealing edge compresses the second sealing ring 170, thereby improving the sealing performance of the top cover assembly 100.

[0091] In addition, the second protruding block is arranged on a side of the second sealing edge close to the second insulating member 150, and the second protruding block is penetrated through the second insulating member 150 and the second through hole 112, the second protruding block is arranged corresponding to the second terminal 122, and the second protruding block is connected to the second terminal 122, that is, the second protruding block is sequentially penetrated through the fourth through hole 152 and the second through hole 112, and then laser welded with the second pole block 1222.

[0092] Optionally, the second protruding block has a second welding hole on one side close to the second pole block 1222, and has a second groove on one side of the second protruding block away from the first connector 120. In this embodiment, the second groove is formed on the second connecting piece 132 by a stamping process, thereby forming the second protruding block. In this embodiment, the structural strength of the second protruding block and the second sealing edge is increased by stamping.

[0093] The second terminal 122 is laser welded and clamped in the second welding hole through the second pole block 1222, which not only connects the second terminal 122 to the second connecting piece 132, but also ensures the sealing of the top cover assembly 100 of this embodiment.

[0094] Optionally, the thickness of the second connecting piece 132 ranges from 0.8 mm to 2.5 mm. Preferably, the thickness of the second connecting piece 132 is 1.2 mm, 2 mm or 2.5 mm, and its Brinell hardness is greater than 25, for example.

[0095] This embodiment provides a single cell battery having the top cover assembly 100 described in any of the above embodiments, and thus having all the beneficial effects of the top cover assembly 100, which will not be described in detail here.

[0096] This embodiment provides a battery pack having the single cell described in any of the above embodiments, and thus having all the beneficial effects of the single cell, which will not be described in detail here.

[0097] This embodiment provides an electrical device having the battery pack described in any of the above embodiments, and thus having all the beneficial effects of the battery pack, which will not be described in detail here.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0099] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A top cover assembly, characterized in that: include: Top cover piece; a first connecting member, the first connecting member being arranged on one side of the top cover sheet; A second connecting member, the second connecting member is arranged on a side of the top cover sheet away from the first connecting member, the second connecting member is penetrated through the top cover sheet, the second connecting member is connected to the first connecting member, and the second connecting member is used to connect the first connecting member to the tab; a first insulating member, the first insulating member being disposed between the first connecting member and the top cover sheet, and the first insulating member being used to prevent the first connecting member from being electrically connected to the top cover sheet; a second insulating member, the second insulating member being arranged on a side of the top cover sheet away from the first connecting member, the second insulating member being located between the second connecting member and the top cover sheet, and being used to prevent the second connecting member from being electrically connected to the top cover sheet; Among them, the first connecting member includes a first terminal, the first terminal includes a first connecting block and a first pole block, the first connecting block is arranged on a side of the first connecting member away from the second connecting member, the first pole block is arranged at an end of the first connecting block close to the second connecting member, the first pole block protrudes from the first connecting block, the first connecting block and the first pole block are integrally formed, the first pole block is used to connect to the second connecting member, and the first connecting block is used to connect to an external battery cell.

2. The top cover assembly according to claim 1, characterized in that: The top cover sheet has a first through hole and a second through hole, the second through hole is arranged on one side of the first through hole, and the axes of the first through hole and the second through hole are parallel; The first terminal is inserted into the first through hole, and the first connector further includes a second terminal, and the second terminal is inserted into the second through hole.

3. The top cover assembly according to claim 2, characterized in that: The second terminal comprises: a second connection block, the second connection block being arranged on a side of the second terminal away from the second connection member, the second connection block being used to connect to the external battery cell; A second pole block, wherein the second pole block is arranged at one end of the second connecting block close to the second connecting piece, the second pole block protrudes from the second connecting block, the second pole block is integrally formed with the second connecting block, and the second pole block is used to be connected to the second connecting piece.

4. The top cover assembly according to claim 2, characterized in that: The second connecting member comprises: a first connecting piece, the first connecting piece being arranged on a side of the second insulating member away from the top cover piece, the first connecting piece being arranged corresponding to the first terminal, and the first connecting piece being connected to the first terminal; The second connecting piece is arranged on a side of the second insulating member away from the top cover piece, the second connecting piece is located on a side of the first connecting piece, the second connecting piece is arranged corresponding to the second terminal, and the second connecting piece is connected to the second terminal.

5. The top cover assembly according to claim 4, characterized in that: The first connecting piece comprises: a first sealing edge, the first sealing edge being arranged on a side of the first connecting piece close to the second insulating member; A first protruding block, wherein the first protruding block is arranged on a side of the first sealing edge close to the second insulating member, the first protruding block penetrates the second insulating member and the first through hole, the first protruding block is arranged corresponding to the first terminal, and the first protruding block is connected to the first terminal.

6. The top cover assembly according to claim 4, characterized in that: The second connecting piece comprises: a second sealing edge, the second sealing edge being located on a side of the second connecting piece close to the second insulating member; A second protruding block, wherein the second protruding block is arranged on a side of the second sealing edge close to the second insulating member, the second protruding block penetrates the second insulating member and the second through hole, the second protruding block is arranged corresponding to the second terminal, and the second protruding block is connected to the second terminal.

7. The top cover assembly according to claim 4, characterized in that: The top cover assembly also includes: A first sealing ring, which is disposed in the first through hole and located between the first connecting sheet and the top cover sheet, and is used to seal between the first connecting sheet and the top cover sheet; A second sealing ring is disposed in the second through hole and is located between the second connecting piece and the top cover piece. The second sealing ring is used for sealing between the second connecting piece and the top cover piece.

8. A single cell battery, characterized in that: A top cover assembly comprising any one of claims 1 to 7.

9. A battery pack, characterized in that: The invention comprises the single cell battery as claimed in claim 8.

10. An electrical device, characterized in that: Comprising the battery pack described in claim 9.

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