Adapter, battery, battery device and electric equipment

Abstract

The utility model discloses an adapter, a battery, a battery device and electric equipment. The adapter comprises a first connecting part and a second connecting part, the first connecting part comprises a first connecting sheet and a second connecting sheet, and a placement space is formed between the first connecting sheet and the second connecting sheet, so that a tab can be arranged in the placement space. According to the technical scheme provided by the invention, the tab can be prevented from being damaged during welding, so that the stability of the battery cell and the power utilization safety are improved.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to an adapter, a battery, a battery device, and an electrical device. Background Art

[0002] Currently, the tab in a power battery is usually connected to the cover plate through an adapter, and the tab is connected to the adapter by welding.

[0003] In the prior art, the tab and the adapter are usually overlapped and welded together. However, during the welding operation on the tab, the tab may be damaged, which will affect the performance and stability of the battery cell. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide an adapter, a battery, a battery device, and an electrical device.

[0005] According to the first aspect of the embodiments of this application, an adapter is provided, which includes a first connection part;

[0006] The first connection part includes a first connection piece and a second connection piece, and there is a placement space between the first connection piece and the second connection piece to be able to place the tab in the placement space.

[0007] Optionally, the first connection piece is rotatably connected to the second connection piece.

[0008] Optionally, the first connection part further includes a bending part, and the first connection piece is rotatably connected to the second connection piece through the bending part.

[0009] Optionally, the first connection part includes a plurality of the first connection pieces, the plurality of first connection pieces are spaced apart, and a first avoidance space is formed between two adjacent first connection pieces; and / or the first connection part includes a plurality of the second connection pieces, the plurality of second connection pieces are spaced apart, and a second avoidance space is formed between two adjacent second connection pieces.

[0010] Optionally, the plurality of first connection pieces are connected.

[0011] Optionally, the thickness of the first connection piece is less than the thickness of the second connection piece.

[0012] Optionally, the first connection piece has multiple layers; and / or the second connection piece has multiple layers.

[0013] Optionally, the adapter further includes a second connection part, and the second connection part is angularly connected to the first connection part.

[0014] According to the second aspect of the embodiments of the present application, a battery is provided, including:

[0015] a battery cell, the battery cell including a tab;

[0016] the above-mentioned adapter;

[0017] the tab is disposed in the placement space and is welded to the first connection piece and the second connection piece.

[0018] Optionally, the tab is welded to the first connection piece and the second connection piece by pressure welding.

[0019] Optionally, the tab is welded to the first connection piece and the second connection piece to form a weld seam, the width of the weld seam is D1, and the length of the weld seam is D2;

[0020] D1 < D2 ≤ 6D1.

[0021] Optionally, the width of the second connection piece is D3, the length of the second connection piece is D4, the width of the weld seam is D1, and the length of the weld seam is D2;

[0022] D1 < D3;

[0023] and / or D2 < D4 ≤ 2D2.

[0024] Optionally, the thickness of the first connection portion is D5, and the width of the weld seam is D1;

[0025] 0.1D1 < D5 < 0.5D1.

[0026] Optionally, the battery further includes an end cap assembly, the end cap assembly includes an electrode terminal, and the electrode terminal is electrically connected to the first connection portion; or,

[0027] the adapter further includes a second connection portion, the second connection portion is angularly connected to the first connection portion, and the electrode terminal is electrically connected to the second connection portion.

[0028] According to the third aspect of the embodiments of the present application, a battery device is provided, including:

[0029] the above-mentioned adapter; or

[0030] the above-mentioned battery.

[0031] An electrical equipment includes:

[0032] the above-mentioned adapter; or

[0033] the above-mentioned battery; or

[0034] the above-mentioned battery device.

[0035] One technical effect of the embodiment of the present application is that the tab of the battery cell is located in the placement space between the first connecting piece and the second connecting piece, and then the first connecting piece, the tab and the second connecting piece are welded together, and the welding surface can be on the first connecting piece or the second connecting piece, so as to avoid damaging the tab during welding, thereby improving the stability of the battery cell and the safety of power use.

[0036] Other features and advantages of the present application will become clear from the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0038] Figure 1 Schematic structural diagram of the second state of the adapter in the embodiment of the present application;

[0039] Figure 2 Schematic structural diagram of the second state of the adapter in the embodiment of the present application;

[0040] Figure 3 Schematic structural diagram of the second state of the adapter in the embodiment of the present application;

[0041] Figure 4 Schematic structural diagram of the battery in the embodiment of the present application;

[0042] Figure 5 Schematic structural diagram of the battery in the embodiment of the present application;

[0043] Figure 6 Schematic structural diagram of the battery in the embodiment of the present application;

[0044] Figure 7 Schematic structural diagram of the structure after welding the adapter and the tab in the embodiment of the present application.

[0045] Description of the reference numerals:

[0046] Adapter 100; First connecting portion 1; First connecting piece 11; First avoiding space 111; Second connecting piece 12; Second avoiding space 121; Placement space 13; Second connecting portion 2; Limiting portion 3; Battery 200; End cover assembly 4; Top cover 41; Electrode terminal 42; Battery cell 5; Tab 51; Weld seam 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0048] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0049] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0050] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0051] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0052] As Figures 1-3 shown, according to the first aspect of the embodiments of the present application, a transfer member 100 is provided, including a first connection portion 1; the first connection portion 1 includes a first connection piece 11 and a second connection piece 12, and a placement space 13 is provided between the first connection piece 11 and the second connection piece 12 to enable the tab 51 to be disposed in the placement space 13.

[0053] The present application provides a transfer member 100. The transfer member 100 is a connection component within the battery 200, connecting the tab 51 of the battery cell 5 and the electrode terminal 42 of the end cap assembly 4 to form an electrical connection relationship.

[0054] In the prior art, the tab 51 and the transfer member 100 overlap, and the transfer member 100 is located between the tab 51 and the body of the battery cell 5. The tab 51 serves as a welding surface so that the tab 51 is welded to the transfer member 100. However, when welding operations are performed on the tab 51, the tab 51 may be damaged during the welding process, thereby affecting the performance and stability of the battery cell 5.

[0055] In an embodiment of the present application, the adapter 100 includes a first connection portion 1. The first connection portion 1 includes a first connection piece 11 and a second connection piece 12. A placement space 13 is formed between the first connection piece 11 and the second connection piece 12. The tab 51 is placed in the placement space 13. Thus, the first connection piece 11 and the second connection piece 12 can clamp the tab 51 between the first connection piece 11 and the second connection piece 12. During welding, welding is performed on the first connection piece 11 or the second connection piece 12, so that the tab 51 is welded to the first connection piece 11 and the second connection piece 12 together, thereby avoiding damage to the tab 51 and further improving the stability and electrical safety of the battery cell 5.

[0056] In one embodiment, the first connection piece 11 and the second connection piece 12 are spaced apart along the Z direction. The opposite sides or the periphery of the first connection piece 11 and the second connection piece 12 are connected. The gap between the first connection piece 11 and the second connection piece 12 forms the placement space 13. A notch is provided on one side, and the notch communicates with the placement space 13. The tab 51 can be inserted into the placement space 13 through the notch, and then the first connection piece 11, the tab 51 and the second connection piece 12 are welded together.

[0057] In another alternative embodiment, the first connection piece 11 and the second connection piece 12 are rotatably connected. Thus, an included angle or coincidence can be formed between the first connection piece 11 and the second connection piece 12. When the first connection piece 11 and the second connection piece 12 coincide, the tab 51 can be clamped between the first connection piece 11 and the second connection piece 12; when the first connection piece 11 and the second connection piece 12 form an included angle, it is convenient to place the tab 51 in the placement space 13.

[0058] In one embodiment, the first connection piece 11 and the second connection piece 12 are connected by a rotating pin shaft. The first connection piece 11 and the second connection piece 12 can rotate relative to the rotating pin shaft so that the first connection piece 11 and the second connection piece 12 coincide or form an included angle.

[0059] In another embodiment, the first connection portion 1 further includes a bending portion. The first connection piece 11 is rotatably connected to the second connection piece 12 through the bending portion.

[0060] Further, the first connection portion 1 includes a bending portion. The bending portion connects the first connection piece 11 and the second connection piece 12 respectively. The first connection piece 11 can approach the second connection piece 12 through the bending portion and coincide with the second connection piece 12, or the second connection piece 12 can move away from the second connection piece 12 through the bending portion and form an included angle with the second connection piece 12.

[0061] Further, the adapter 100 includes a first state and a second state.

[0062] As Figures 1-3 shown in the second state of the adapter 100, an included angle is formed between the first connecting piece 11 and the second connecting piece 12. In this state, it is convenient to place the tab 51 between the first connecting piece 11 and the second connecting piece 12; as Figure 7 shown, the adapter 100 is in the first state, and the first connecting piece 11 and the second connecting piece 12 overlap. In this state, the first connecting piece 11 and the second connecting piece 12 clamp the tab 51 between the first connecting piece 11 and the second connecting piece 12, and then the first connecting piece 11, the tab 51 and the second connecting piece 12 are welded together. The welding surface can be on the first connecting piece 11 or on the second connecting piece 12, so as to avoid damaging the tab 51 during welding and improve the stability and power consumption safety of the battery cell 5.

[0063] In an embodiment, the first connecting portion 1 includes a plurality of the first connecting pieces 11, and the plurality of the first connecting pieces 11 are arranged at intervals, and a first avoiding space 111 is formed between two adjacent ones of the first connecting pieces 11; and / or the first connecting portion 1 includes a plurality of the second connecting pieces 12, and the plurality of the second connecting pieces 12 are arranged at intervals, and a second avoiding space 121 is formed between two adjacent ones of the second connecting pieces 12.

[0064] Specifically, the first connecting portion 1 includes a plurality of the first connecting pieces 11, that is to say, the first connecting portion 1 includes two or more first connecting pieces 11; the first connecting portion 1 includes a plurality of the second connecting pieces 12, that is to say, the first connecting portion 1 includes two or more second connecting pieces 12. In an embodiment where the first connecting portion 1 includes a plurality of the first connecting pieces 11 and a plurality of the second connecting pieces 12, the number of the first connecting pieces 11 and the number of the second connecting pieces 12 may be the same or different.

[0065] As Figure 1 and Figure 3In the illustrated embodiment, the first connecting portion 1 includes two first connecting pieces 11 which are spaced apart from each other, and a first avoidance space 111 is formed between the two first connecting pieces 11. The first connecting portion 1 further includes two second connecting pieces 12 which are spaced apart from each other, and a second avoidance space 121 is formed between the two second connecting pieces 12. One of the first connecting pieces 11 is rotatably connected to one of the second connecting pieces 12. That is to say, when the adapter 100 is in the first state, the first connecting piece 11 and the second connecting piece 12 overlap; when the adapter 100 is in the second state, the first connecting piece 11 and the second connecting piece 12 form an angle. The other first connecting piece 11 is rotatably connected to the other second connecting piece 12. That is to say, when the adapter 100 is in the first state, the first connecting piece 11 and the second connecting piece 12 overlap; when the adapter 100 is in the second state, the first connecting piece 11 and the second connecting piece 12 form an angle. And when the adapter 100 is in the first state, the first avoidance space 111 and the second avoidance space 121 can overlap with each other. In this embodiment, one second connecting piece 12 can be connected to two battery cells 5. That is to say, two tab ears 51 can be connected to one second connecting piece 12, and the battery cell 5 is located at the second avoidance space 121, so that the tab ear 51 is bent at the second avoidance space 121 and overlaps with the second connecting piece 12. The first connecting piece 11 overlaps with the tab ear 51 and the second connecting piece 12 to clamp the tab ear 51 between the first connecting piece 11 and the second connecting piece 12. Two battery cells 5 can be placed at the second avoidance space 121. The tab ear 51 of one battery cell 5 is bent towards one second connecting piece 12, and the tab ear 51 of the other battery cell 5 is bent towards the other second connecting piece 12. And a battery cell 5 is further placed on the side of the second connecting piece 12 away from the second avoidance space 121, and the tab ear 51 of this battery cell 5 is bent towards the second connecting piece 12. Therefore, one second connecting piece 12 will be connected to two battery cells 5, and two second connecting pieces 12 will be connected to four battery cells 5. One first connecting piece 11 will overlap with one second connecting piece 12, which is convenient for determining the welding position, improving the welding efficiency, and also reducing the weight of the adapter 100.

[0066] As Figure 2 In the embodiment of, the first connecting portion 1 includes two second connecting pieces 12 which are spaced apart from each other, and a second avoidance space 121 is formed between the two second connecting pieces 12. Wherein, when the adapter 100 is in the first state, the first connecting piece 11 will overlap with the two second connecting pieces 12 and cover the second avoidance space 121. In this embodiment, the positional relationship and connection relationship between the two second connecting pieces 12 and the battery cell 5 are the same as those in Figure 4The implementation is the same as described above and will not be elaborated further. One first connecting piece 11 overlaps with two second connecting pieces 12, and the tab 51 is clamped between the second connecting piece 12 and the first connecting piece 11. In this implementation, the structure of the adapter 100 is simpler and easier to process.

[0067] In another implementation, if the first connecting piece 11 is arranged between the cell 5 body and the tab 51, the first connecting portion 1 includes two first connecting pieces 11. Its implementation is the same as that shown in Figure 2 and will not be elaborated further.

[0068] In an alternative implementation, multiple first connecting pieces 11 are connected. Multiple first connecting pieces 11 are connected together and can rotate simultaneously. When an angle or coincidence needs to be formed between the first connecting piece 11 and the second connecting piece 12, multiple first connecting pieces 11 can rotate simultaneously, thereby improving the working efficiency of welding.

[0069] In an alternative implementation, the thickness of the first connecting piece 11 is less than the thickness of the second connecting piece 12.

[0070] Wherein, the thickness of the first connecting piece 11 refers to the dimension in the Z direction after the first connecting piece 11 and the second connecting piece 12 overlap; the thickness of the second connecting piece 12 refers to the dimension of the second connecting piece 12 in the Z direction.

[0071] Further explanation, the thickness of the first connecting piece 11 is less than the thickness of the second connecting piece 12. When the first connecting piece 11 rotates relative to the second connecting piece 12, it is convenient for the first connecting piece 11 to approach or move away from the second connecting piece 12, and during the approaching or moving away process, deformation of the first connecting piece 11 can be avoided.

[0072] In an alternative implementation, the first connecting piece 11 has multiple layers; and / or the second connecting piece 12 has multiple layers.

[0073] In a specific implementation, the first connecting piece 11 has multiple layers and the second connecting piece 12 has multiple layers; on the one hand, it can improve the welding strength and prevent damage to the cell 5 foil during welding, thus avoiding affecting the service life of the cell 5.

[0074] In a specific implementation, if the second connecting piece 12 is located between the tab 51 and the cell 5 body, the first connecting piece 11 is multiple layers, the tab 51 is located between the first connecting piece 11 and the second connecting piece 12, and the end face of the first connecting piece 11 away from the tab 51 is the welding surface. Therefore, the first connecting piece 11 being multiple layers can improve the welding strength and also reduce the process manufacturing difficulty.

[0075] In a specific embodiment, if the first connecting piece 11 is located between the tab 51 and the body of the battery cell 5, the second connecting piece 12 is multi-layered, the tab 51 is located between the first connecting piece 11 and the second connecting piece 12, and the end face of the second connecting piece 12 away from the tab 51 is the welding surface. Therefore, the multi-layer structure of the second connecting piece 12 can improve the welding strength and also reduce the manufacturing difficulty of the process.

[0076] In an alternative embodiment, the adapter 100 further includes a limiting portion 3. The limiting portion is connected to the second connecting piece 12. The limiting portion 3 is plate-shaped, and the upper end face of the limiting portion 3 protrudes in the Z direction from the upper surface of the second connecting piece 12. When installing the battery cell 5 into the housing, the upper end face of the limiting portion 3 abuts against the inner end face of the housing, thereby preventing the first connecting piece 11 from contacting the inner end face of the housing.

[0077] As Figures 4-7 shown, according to the second aspect of the embodiments of the present application, a battery 200 is provided, including: a battery cell 5, the battery cell 5 including a tab 51; an adapter 100; the tab 51 is disposed between the first connecting piece 11 and the second connecting piece 12 and is connected by welding.

[0078] In one embodiment, the electrode terminal 42 is directly connected to the first connecting piece 11, thereby realizing the function of the adapter 100 to connect the tab 51 and the electrode terminal 42.

[0079] In another embodiment, the adapter 100 further includes a second connecting portion 2. The second connecting portion 2 is connected to the first connecting portion 1. Specifically, the second connecting portion 2 is connected to the second connecting piece 12. The second connecting portion 2 is plate-shaped, and the end face of the second connecting portion 2 for connecting the electrode terminal 42 is flush with the end face of the second connecting piece 12 close to the first connecting piece 11. This embodiment is applicable when the electrode terminal 42 and the tab 51 are located at the same end of the battery 200, thereby making the connection between the tab 51 and the electrode terminal 42 more convenient and saving the internal space of the battery 200.

[0080] In another alternative embodiment, the adapter 100 further includes a second connecting portion 2, and the second connecting portion 2 is angularly connected to the first connecting portion 1.

[0081] As Figures 1-3 shown, the adapter 100 further includes a second connecting portion 2, and the second connecting portion 2 is angularly connected to the first connecting portion 1. Specifically, the second connecting portion 2 is connected to the second connecting piece 12. The second connecting portion 2 is plate-shaped, and an included angle is formed between the second connecting portion 2 and the second connecting piece 12. This embodiment is applicable when the electrode terminal 42 and the tab 51 are located at adjacent ends of the battery 200. The first connecting portion 1 is connected to the tab 51, and the second connecting portion 2 is connected to the electrode terminal 42, which can improve the arrangement space of the battery cell 5 and reduce the volume of the battery cell 5.

[0082] An embodiment of the present application further provides a battery 200, which includes a battery cell 5 and an adapter 100; the battery cell 5 includes a tab 51, and the tab 51 is disposed in the placement space 13 and is welded to the first connection piece 11 and the second connection piece 12.

[0083] Further explanation, wherein, the adapter 100 includes a first connection portion 1, the first connection portion 1 includes a first connection piece 11 and a second connection piece 12, the tab 51 is placed in the placement space 13 between the first connection piece 11 and the second connection piece 12, and the tab 51 is connected to the adapter 100 by welding. Since the tab 51 is located between the first connection piece 11 and the second connection piece 12, the first connection piece 11 or the second connection piece 12 will play a role in protecting the tab 51 during welding, so as to avoid damage to the tab 51 during welding, thereby improving the stability of the battery 200.

[0084] In an optional embodiment, the tab 51 is welded to the first connection piece 11 and the second connection piece 12 by pressure welding.

[0085] In the prior art, the tab 51 and the adapter 100 are usually connected by ultrasonic welding or laser welding. However, ultrasonic welding will generate iron filings during the welding process, which will cause the battery 200 to short-circuit during operation; while laser welding is prone to defects such as spatter, welding breakage, welding holes, false welding, and undercut during the welding process, thus affecting the performance of the battery 200.

[0086] In the embodiment of the present application, an induction pressure welding method is adopted. By applying a heat source through an induction coil (instead of direct welding), the first connecting piece and the tab 51 will be softened or in a molten state at a local position, and then by applying pressure, atomic mutual fusion is achieved at the welding position, thereby achieving connection.

[0087] Compared with the ultrasonic plus laser welding process, induction pressure welding can achieve one-time welding, greatly improving the efficiency; and the heat input during the induction pressure welding process is low, and it will not cause deformation and material denaturation of the battery cell 5 due to heat input; and its connection area is large, and only less materials of the tab 51, the first connection piece 11 and the second connection piece 12 are required to meet the current-carrying area. Therefore, the materials of the tab 51, the first connection piece 11 and the second connection piece 12 can be greatly reduced, the battery cell 5 can be lightened, the cost can be reduced, and the internal space utilization rate of the battery cell 5 can be increased.

[0088] In an optional embodiment, the tab 51 is welded to the first connection piece 11 and the second connection piece 12 to form a weld 6, the width of the weld 6 is D1, and the length of the weld 6 is D2;

[0089] D1 < D2 ≤ 6D1.

[0090] Further explanation, the tab 51 is clamped between the first connecting piece 11 and the second connecting piece 12, and a weld seam 6 is formed after welding. The width of the weld seam 6 is D1, and the length of the weld seam 6 is D2.

[0091] Among them, for the width D1 and the length D2 of the weld seam 6, please refer to Figure 7 the markings.

[0092] Further explanation, D1 < D2 ≤ 6D1 can meet the over-current area between the battery cell 5 and the electrode terminal 42.

[0093] In an alternative embodiment, the width of the second connecting piece 12 is D3, the length of the second connecting piece 12 is D4, the width of the weld seam 6 is D1, and the length of the weld seam 6 is D2; D1 < D3; and / or D2 < D4 ≤ 2D2.

[0094] Further explanation, the width of the first connecting piece 11 is D3, the length of the first connecting piece 11 is D4. For the width D3 and the length D4 of the first connecting piece 11, please refer to Figure 7 the markings.

[0095] Further explanation, D1 < D3; in the embodiment where one tab 51 is connected to the second connecting piece 12, D1 < D3 ≤ 2D1; in the embodiment where two tabs 51 are connected to the second connecting piece 12, 2D1 < D3.

[0096] Further explanation, D2 < D4 ≤ 2D4.

[0097] It can not only meet the size requirements and over-current requirements of the weld seam 6, but also improve the space utilization rate inside the battery 200.

[0098] In an alternative embodiment, the thickness of the first connecting portion 1 is D5, and the width of the weld seam 6 is D1; 0.1D1 < D5 < 0.5D1.

[0099] Further explanation, the thickness of the first connecting portion 1 refers to the dimension in the Z direction after the adapter 100 is in the first state and the first connecting piece 11 and the second connecting piece 12 overlap.

[0100] Among them, 0.1D1 < D5 < 0.5D1; it can not only meet the welding process and over-current requirements, but also improve the space utilization rate inside the battery 200.

[0101] In an alternative embodiment, the battery 200 further includes an end cap assembly 4. The end cap assembly 4 includes an electrode terminal 42, and the electrode terminal 42 is electrically connected to the first connection portion 1; alternatively, the adapter 100 further includes a second connection portion 2, the second connection portion 2 is angularly connected to the first connection portion 1, and the electrode terminal 42 is electrically connected to the second connection portion 2.

[0102] As Figure 1 shown, the battery 200 further includes an end cap assembly 4, and the end cap assembly 4 includes an electrode terminal 42.

[0103] Specifically, the end cap assembly 4 includes a top cover 41, and the electrode terminal 42 is disposed on the top cover 41.

[0104] In the embodiment where the electrode terminal 42 is electrically connected to the first connection portion 1, the end cap assembly 4 and the tab 51 of the battery cell 5 are located at the same end of the battery 200, so that the electrode terminal 42 located on the top cover 41 is connected to the first connection piece 11 or the second connection piece 12, thereby saving the internal space of the battery 200 and improving the space utilization rate of the battery 200.

[0105] As Figure 5 shown, in the embodiment where the electrode terminal 42 is connected to the second connection portion 2, the end cap assembly 4 and the tab 51 of the battery cell 5 are located at adjacent ends of the battery 200, the second connection portion 2 is connected to the electrode terminal 42 located on the top cover 41, and the first connection portion 1 is connected to the tab 51; the arrangement of the end cap assembly 4 in this embodiment can improve the layout space of the battery cell 5 and reduce the volume of the battery cell 5.

[0106] According to the third aspect of the embodiments of the present application, a battery 200 device is provided, including the above-mentioned adapter 100; or the above-mentioned battery 200.

[0107] According to the fourth aspect of the embodiments of the present application, an electrical device is provided, including the above-mentioned adapter 100; or the above-mentioned battery 200; or the above-mentioned battery 200 device.

[0108] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A transfer component, characterized in that: comprising a first connecting portion; The first connecting portion includes a first connecting piece and a second connecting piece, and a placement space is provided between the first connecting piece and the second connecting piece so that the tab can be arranged in the placement space; The first connecting piece is rotatably connected to the second connecting piece.

2. The adapter according to claim 1, characterized in that: The first connecting portion further includes a bending portion, and the first connecting piece is rotatably connected to the second connecting piece via the bending portion.

3. The adapter according to claim 1, characterized in that: The first connecting portion includes a plurality of the first connecting pieces, which are arranged at intervals, and a first avoidance space is formed between two adjacent first connecting pieces; and / or the first connecting portion includes a plurality of the second connecting pieces, which are arranged at intervals, and a second avoidance space is formed between two adjacent second connecting pieces.

4. The adapter according to claim 3, characterized in that: A plurality of the first connecting pieces are connected.

5. The adapter according to claim 1, characterized in that: The thickness of the first connecting sheet is smaller than the thickness of the second connecting sheet.

6. The adapter according to claim 1, characterized in that: The first connecting sheet has multiple layers; and / or the second connecting sheet has multiple layers.

7. The adapter according to any one of claims 1 to 6, characterized in that: The adapter also includes a second connecting portion, which is connected to the first connecting portion at an angle.

8. A battery, characterized in that: include: A battery cell, wherein the battery cell comprises a tab; The adapter according to any one of claims 1 to 7; The pole tab is disposed in the placement space and is welded to the first connecting piece and the second connecting piece.

9. The battery according to claim 8, characterized in that The electrode tab is welded to the first connecting piece and the second connecting piece by pressure welding.

10. The battery according to claim 8, characterized in that The electrode tab is welded with the first connecting piece and the second connecting piece to form a weld, the width of the weld is D1, and the length of the weld is D2; D1<D2≤6D1.

11. The battery according to claim 8, characterized in that The width of the second connecting piece is D3, the length of the second connecting piece is D4, the electrode tab is welded with the first connecting piece and the second connecting piece to form a weld, the width of the weld is D1, and the length of the weld is D2; D1<D3; And / or D2<D4≤2D2.

12. The battery according to claim 8, characterized in that The electrode tab is welded with the first connecting piece and the second connecting piece to form a weld, the thickness of the first connecting portion is D5, and the width of the weld is D1; 0.1D1<D5<0.5D1.

13. The battery according to claim 8, characterized in that The battery further includes an end cap assembly, the end cap assembly includes an electrode terminal, and the electrode terminal is conductively connected to the first connection portion; or, The adapter also includes a second connecting portion, the second connecting portion is connected to the first connecting portion at an angle, and the electrode terminal is conductively connected to the second connecting portion.

14. A battery device, characterized in that: include: The adapter according to any one of claims 1 to 7; or A battery as claimed in any one of claims 8 to 13.

15. An electrical equipment, characterized in that: include: The adapter according to any one of claims 1 to 7; or A battery as claimed in any one of claims 8 to 13; or A battery device as claimed in claim 14.

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