Adapter sheet and battery
By designing the connection area of the pole column and the pole ear of the adapter, the bare electric cell is welded vertically, which solves the redundancy problem caused by the pole ear bend and improves the safety and assembly efficiency of the battery.
Patent Information
- Application Number
- CN202422197698.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-06
AI Technical Summary
In the prior art, the pole ear needs to be bent when connected to the adapter, resulting in redundant length of the pole ear, increasing the risk of internal short circuits of the battery and assembly complexity.
A adapter is designed, with the pole column connecting area located on the plate surface of the main body and the pole ear connecting area located on the side wall. The bare electric core can be welded when it is standing, eliminating the bending step, and the length of the pole ear does not require a reserved bending allowance.
Avoid the problem of inverting the polar ear caused by redundancy of the polar ear, shorten the battery assembly time, reduce costs and improve safety.
Smart Images
Figure CN223140983U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of batteries, and particularly relates to a connecting piece and a battery. Background Art
[0002] The connecting piece is one of the important components in a wound square shell battery, and is used to connect the pole column of the top cover and the tab of the bare battery cell. At present, the tab needs to be bent when connecting to the connecting piece. For this reason, the tab generally has a relatively long reserved length, which may cause the tab to be inserted reversely, increasing the risk of internal short circuit of the battery and having a greater potential safety hazard. Summary of the Utility Model
[0003] In view of this, the purpose of the present application is to provide a connecting piece and a battery to solve some or all of the above-mentioned technical problems.
[0004] Based on the above purpose, the first aspect of the present application provides a connecting piece, including: a main body, including a pole column connecting portion and at least two tab connecting portions arranged in the same plane; the main body includes a plate surface and side walls connected to the edge of the plate surface, the pole column connecting portion is provided with a pole column connecting area for electrically connecting with the pole column of the battery, the pole column connecting area is located on the plate surface, the tab connecting portion is provided with a tab connecting area for electrically connecting with the tab of the battery, and the tab connecting area is located on the side wall.
[0005] Optionally, the main body further includes a fusing portion, the fusing portion is connected between the pole column connecting portion and the tab connecting portion, and between adjacent tab connecting portions; the direction perpendicular to the plate surface is defined as the thickness direction of the main body, the thickness of the fusing portion is less than the thickness of the tab connecting portion and less than the thickness of the pole column connecting portion.
[0006] Optionally, the thickness of the pole column connecting portion is not less than the thickness of the tab connecting portion.
[0007] Optionally, the fusing portion between adjacent two tab connecting portions is provided with a hollowed-out area, along the thickness direction of the main body, the hollowed-out area penetrates the main body; one end of the hollowed-out area is close to the pole column connecting portion, and the other end extends to the edge of the main body to at least separate the ends of two tab connecting portions far from the pole column connecting portion from each other.
[0008] Optionally, at least one side surface of the fusing portion is provided with a fusing groove, the fusing groove is located between adjacent two tab connecting portions, and one end of the fusing groove extends to the pole column connecting portion and the other end extends to the hollowed-out area.
[0009] Optionally, a plurality of welding protrusions protruding from the side wall are provided in the tab connection area, and the plurality of welding protrusions are arranged in an array in the tab connection area.
[0010] Optionally, there are two tab connection parts, and the two tab connection parts are symmetrically distributed on opposite sides of the pole connection part, and the tab connection area is arranged on the surfaces of the two tab connection parts away from each other.
[0011] Based on the same inventive concept, a second aspect of the present application further provides a battery, including the adapter plate as described in the first aspect, and the adapter plate is connected to the positive pole and / or negative pole of the battery.
[0012] Optionally, the battery further includes a bare battery cell; the tab of the bare battery cell is connected to the tab connection area of the tab connection part, and the center of the bare battery cell and the tab connection area are located in the same plane.
[0013] Optionally, the tab is welded to the tab connection part to form a tab weld mark; along the direction perpendicular to the side wall, the orthographic projection of the tab weld mark in the tab connection area is located inside the tab connection area.
[0014] As can be seen from the above, for the adapter plate and battery provided in the present application, the pole connection area is located on the plate surface of the main body, and the tab connection area is located on the side wall of the main body. During the process of assembling the battery, as long as the bare battery cell is placed upright, the surface of the tab can be attached to the tab connection area on the side wall, and welding can be directly carried out. Since the bare battery cell is already placed upright during welding, there is no need to rotate the bare battery cell after welding is completed. Correspondingly, there is no need to bend the tab anymore. On the one hand, since the tab is no longer bent, there is no need to reserve a bending margin when designing the length of the tab, which helps to avoid the problem of reverse insertion of the tab caused by redundant tabs; on the other hand, since the process of core combination of the rolled core is omitted during assembly, it helps to shorten the assembly time of the battery and reduce costs. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.
[0016] Figure 1 It is a schematic diagram of a battery with the first structure of an embodiment of the present application;
[0017] Figure 2 It is a welding schematic diagram of the bare battery cell and the adapter plate in the battery with the first structure of an embodiment of the present application;
[0018] Figure 3 Schematic top view of the adapter piece of the second structure according to the embodiment of the present application;
[0019] Figure 4 Schematic front view of the adapter piece of the second structure according to the embodiment of the present application;
[0020] Figure 5 Schematic side view of the adapter piece of the second structure according to the embodiment of the present application;
[0021] Figure 6 Schematic connection diagram of the adapter piece of the second structure and the tab of the bare battery cell according to the embodiment of the present application;
[0022] Figure 7 Schematic top view of the adapter piece of the third structure according to the embodiment of the present application;
[0023] Figure 8 Schematic front view of the adapter piece of the third structure according to the embodiment of the present application;
[0024] Figure 9 Partial schematic diagram of the battery of the second structure according to the embodiment of the present application.
[0025] Description of reference numerals:
[0026] 100, adapter piece; 110, main body; 111, pole connection part; 111-1, pole connection area; 112, tab connection part; 112-1, tab connection area; 113, plate surface; 114, side wall; 115, fusing part; 116, welding protrusion; 117, fusing groove; 118, hollowed-out area;
[0027] 200, top cover; 210, pole;
[0028] 300, bare battery cell; 310, tab;
[0029] 400, tab welding mark. Detailed implementation manners
[0030] To make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to specific embodiments and the accompanying drawings.
[0031] It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions and numerical values of the components described in these embodiments do not limit the scope of the present application.
[0032] Meanwhile, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship.
[0033] 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.
[0034] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the ordinary meanings understood by those of ordinary skill in the art to which the present application pertains. The terms "first", "second" and similar terms used in the embodiments of the present application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0035] As Figure 1 , Figure 1 FIG. shows a schematic diagram of a battery of the first structure. In some embodiments, the battery includes a connection tab 100, a top cover 200 located above the connection tab 100, and a bare battery cell 300 located below the connection tab 100. Part of the upper plate surface of the connection tab 100 is welded to the terminal post 210 of the top cover 200, and part of the lower plate surface of the connection tab 100 is welded to the tab 310 of the bare battery cell 300.
[0036] As Figure 2 , Figure 2 FIG. shows a welding schematic diagram of the bare battery cell 300 and the connection tab 100 in the battery of the first structure. Taking the structure shown in Figure 2 as an example for illustration. Since the tab 310 is welded to the lower plate surface of the connection tab 100, during welding, the tabs 310 of the same electrical property of the same bare battery cell 300 will be welded together first, and then the bare battery cell 300 is placed flat and the surface of the connected tabs 310 is made to fit the lower plate surface of the connection tab 100. At this time, the tabs 310 of the bare battery cell 300 extend horizontally.
[0037] After that, a core combining step will be carried out. The two flat bare battery cells 300 are rotated downward to the lower side of the connection tab 100 and gradually brought together. During this process, the middle part of the tab 310 will be bent. Finally, the structure of the connection tab 100 and the bare battery cell 300 forms the structure shown in Figure 1 FIG.
[0038] The applicant's research found that since the tab 310 needs to be bent during the assembly process, the length of the tab 310 can only be made longer. In other words, when designing the length dimension of the tab 310, not only the length for the part where the tab 310 is connected to the adapter plate 100 needs to be reserved, but also the length for the bending of the tab 310 needs to be reserved. During actual bending, some tabs 310 will have length redundancy. During the assembly process, the tabs 310 with length redundancy may be inserted backwards, squeezing the separator and the positive and negative electrode plates of the bare battery cell 300, and easily causing an internal short circuit in the bare battery cell 300.
[0039] In order to improve the problem of reverse insertion of the tab 310 caused by the bending of the tab 310, the present embodiment provides an adapter plate 100 with a second structure. As Figure 3 , Figure 3 shows a top view schematic diagram of the adapter plate 100 with the second structure. The adapter plate 100 includes a main body 110, and the main body 110 includes a pole connection part 111 and at least two tab connection parts 112 arranged in the same plane. As Figure 4 , Figure 4 shows a front view schematic diagram of the adapter plate 100 with the second structure. The main body 110 includes a plate surface 113 and side walls 114 connected to the edge of the plate surface 113. As Figure 3 and Figure 4 , the pole connection part 111 is provided with a pole connection area 111-1 for electrically connecting with the pole 210 of the battery, and the pole connection area 111-1 is located on the plate surface 113. As Figure 4 and Figure 5 , Figure 5 shows a side view schematic diagram of the adapter plate 100 with the second structure. The tab connection part 112 is provided with a tab connection area 112-1 for electrically connecting with the tab 310 of the battery, and the tab connection area 112-1 is located on the side wall 114.
[0040] Exemplarily, the shapes of at least two tab connection parts 112 are the same.
[0041] Exemplarily, the tab connection area 112-1 can be rectangular or oblong.
[0042] Exemplarily, as Figure 3 and Figure 4 , the orthographic projection of the tab connection part 112 on the plate surface 113 is rectangular. The long side direction of the rectangle is defined as the first direction (such as the X direction in Figure 3 ), and the short side direction of the rectangle is defined as the second direction (such as the Y direction in Figure 3 ). The width of this rectangle is Q, so that the tab connection part 112 can withstand the heat impact during the welding of the tab 310 of the bare battery cell 300 and the tab connection part 112, and keep the structure of the tab connection part 112 unchanged.
[0043] Exemplarily, such as Figure 3 , the orthographic projection of the main body 110 on the plate surface 113 is in a "convex" shape, and chamfered corners are provided at the right angles formed by the intersection of each adjacent side of the "convex" shape.
[0044] Exemplarily, the radius range of the chamfered corner is from 1 mm to 3 mm, such as 1 mm, 2 mm or 3 mm.
[0045] Exemplarily, the plate surface 113 and the side wall 114 of the main body 110 are perpendicular to each other.
[0046] When assembling a battery using the adapter plate 100 of this embodiment, the pole 210 on the top cover 200 can be first welded to the pole connection area 111-1 of the pole connection part 111, and then the tab 310 of the bare battery cell 300 can be welded to the tab connection area 112-1 of the tab connection part 112.
[0047] Such as Figure 6 , Figure 6 shows a schematic connection diagram of the adapter plate 100 of the second structure and the tab 310 of the bare battery cell 300. The pole connection area 111-1 is located on the plate surface 113 of the main body 110. When the adapter plate 100 is connected to the pole 210 of the top cover 200 located above it, the plate surface 113 of the main body 110 is horizontal and the side wall 114 of the main body 110 is vertical. The tab connection area 112-1 is located on the side wall 114 of the main body 110. When the tab 310 of the bare battery cell 300 is connected to the tab connection area 112-1 of the adapter plate 100 (at this time, multiple tabs 310 of the same electrical property of the bare battery cell 300 have been welded together), the bare battery cell 300 can be placed upright below the adapter plate 100, the tab 310 extends upward, and the surface of the tab 310 is also vertical. The surface of the tab 310 can be directly attached to and firmly welded to the tab connection area 112-1 on the side wall 114. At the same time, since the bare battery cell 300 is already located below the adapter plate 100, after the tab 310 and the adapter plate 100 are welded, there is no need to rotate the bare battery cell 300, that is, the step of winding core alignment is omitted.
[0048] The adapter piece 100 provided in this embodiment, the pole connection region 111-1 is located on the plate surface 113 of the main body 110, and the tab connection region 112-1 is located on the side wall 114 of the main body 110. During the process of assembling the battery, as long as the bare battery cell 300 is placed upright, the surface of the tab 310 can be attached to the tab connection region 112-1 on the side wall 114, and welding can be directly performed. Since the bare battery cell 300 is already placed upright during welding, there is no need to rotate the bare battery cell 300 after welding is completed. Correspondingly, there is no need to bend the tab 310 anymore. On the one hand, since the tab 310 is no longer bent, there is no need to reserve a bending allowance when designing the length of the tab 310, which helps to avoid the problem of reverse insertion of the tab 310 caused by redundant tabs; on the other hand, since the core assembly step is omitted during assembly, it helps to shorten the battery assembly time and reduce costs.
[0049] As Figure 3 , in some embodiments, the main body 110 further includes a fusing portion 115, and the fusing portion 115 is connected between the pole connection portion 111 and the tab connection portion 112, and between adjacent tab connection portions 112. As Figure 4 , the direction perpendicular to the plate surface 113 is defined as the thickness direction of the main body 110 (such as Figure 4 the Z direction in
[0050] Exemplarily, the cross-sectional area of the fusing portion 115 can meet the overcurrent capacity of the battery.
[0051] Exemplarily, one side plate surface 113 of the main body 110 is flat (such as Figure 4 the lower plate surface in
[0052] ), and the other side plate surface 113 is divided into a pole connection portion 111 and a tab connection portion 112 by the fusing portion 115 (such as the upper plate surface).
[0053] Among the pole connection part 111, the tab connection part 112, and the fusing part 115, the fusing part 115 has the smallest thickness. Correspondingly, the cross-sectional area of the fusing part 115 is also the smallest. Taking the adapter plate 100 connecting two bare battery cells 300 as an example, when one of the bare battery cells 300 undergoes thermal runaway (caused by overcharging, over-discharging, or short circuit), the temperature of this bare battery cell 300 will rise sharply, and the heat of the bare battery cell 300 will be transferred to the fusing part 115 through the connected tab connection part 112. Since the cross-sectional area of the fusing part 115 is the smallest, the temperature of the fusing part 115, especially the part close to the thermally runaway bare battery cell 300, will increase the fastest and can quickly reach the fusing temperature, resulting in a fusing phenomenon. Since the fusing part 115 is arranged between the tab connection part 112 and the pole connection part 111, after the fusing part 115 fuses, the thermally runaway bare battery cell 300 and the pole 210 are separated from each other. At the same time, the fusing part 115 is also arranged between two adjacent tab connection parts 112. Therefore, after the fusing part 115 fuses, the thermally runaway bare battery cell 300 and other bare battery cells 300 are also separated from each other. This helps to improve the safety performance of the battery using the adapter plate 100 of this embodiment and reduce the safety risk. The connection between the non-thermally runaway bare battery cell 300 and the pole 210 can still be maintained.
[0054] On the contrary, if the thickness of the main body 110 of the adapter plate 100 is uniform, it may not be able to fuse in time when the bare battery cell 300 undergoes thermal runaway, which has a safety hazard.
[0055] Such as Figure 4 , in some embodiments, the thickness H of the pole connection part 111 is not less than the thickness G of the tab connection part 112, that is, H≥G.
[0056] The pole connection part 111 needs to be electrically connected to the tabs 310 of the same electrical property of all the bare battery cells 300, while each tab connection part 112 is only electrically connected to the tab 310 of the same electrical property of one bare battery cell 300. Therefore, in order to ensure that the pole connection part 111 can meet the overcurrent capacity of the battery, it is necessary to ensure that the thickness of the pole connection part 111 is not less than the thickness of the tab connection part 112.
[0057] Such as Figure 5 , in some embodiments, the tab connection area 112-1 is provided with a plurality of welding protrusions 116 protruding from the side wall 114, and the plurality of welding protrusions 116 are arranged in an array in the tab connection area 112-1.
[0058] Exemplarily, the diameter of the welding protrusion 116 can be from 0.2 mm to 0.5 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.
[0059] When welding the tab connection region 112-1 on the tab 310 and the side wall 114, the welding protrusion 116 can increase the friction force between the tab 310 and the side wall 114, which is beneficial to improving the welding tensile force between the two and ensuring the connection reliability between the tab 310 and the adapter plate 100.
[0060] As Figure 3 , in some embodiments, there are two tab connection parts 112, and the two tab connection parts 112 are symmetrically distributed on opposite sides of the pole connection part 111. The tab connection region 112-1 is arranged on the surfaces of the two tab connection parts 112 that are away from each other.
[0061] The orthographic projection of the main body 110 on the plate surface 113 is an axisymmetric figure, and its axis of symmetry is parallel to the first direction.
[0062] Setting two tab connection parts 112 on the main body 110 can make the tab connection region 112-1 of each tab connection part 112 located on the outer side wall 114 of the main body 110. When welding the tab 310 and the tab connection part 112, the main body 110 will not cause obstruction, which is convenient for welding. The two tab connection parts 112 are symmetrically arranged, which can facilitate the alignment of the two bare battery cells 300 electrically connected to the two tab connection parts 112, and is also convenient for battery assembly while meeting the structural requirements of the square shell battery.
[0063] As Figure 3 , in some embodiments, the fuse part 115 between two adjacent tab connection parts 112 is provided with a hollowed-out area 118. Along the thickness direction of the main body 110, the hollowed-out area 118 penetrates the main body 110; one end of the hollowed-out area 118 is close to the pole connection part 111, and the other end extends to the edge of the main body 110, so as to at least separate the ends of the two tab connection parts 112 that are away from the pole connection part 111.
[0064] Exemplarily, the hollowed-out area 118 can be arranged along the axis of symmetry of the main body 110.
[0065] Exemplarily, one end of the hollowed-out area 118 close to the pole connection part 111 can be arc-shaped.
[0066] Setting the hollowed-out area 118 can further reduce the cross-sectional area of the fuse part 115 between the tab connection part 112 and the pole connection part 111, and further reduce the cross-sectional area of the fuse part 115 between two adjacent tab connection parts 112. When one of the bare battery cells 300 has a thermal runaway, it can further accelerate the fusing speed of the part of the fuse part 115 close to the bare battery cell 300, which helps to further improve the overall safety of the battery.
[0067] As Figure 7 , Figure 7Shows a top view schematic diagram of the third type of adapter piece 100. In some embodiments, a fusing groove 117 is provided on the surface of the fusing portion 115. The fusing groove 117 is located between two adjacent tab connecting portions 112, and one end of the fusing groove 117 extends to the terminal connecting portion 111, and the other end extends to the hollow area 118.
[0068] Exemplarily, the main body 110 can be a plate-like structure. A groove can be provided on one side plate surface 113 of the plate-like structure, so that the fusing portion 115 is formed on the main body 110 at the groove position, and the main body 110 at the remaining positions except the groove forms the terminal connecting portion 111 and the tab connecting portion 112. As Figure 8 , Figure 8 Shows a front view schematic diagram of the third type of adapter piece 100. The fusing groove 117 can be provided at the bottom of the groove, that is, the opening direction of the fusing groove 117 can be the same as the opening direction of the groove.
[0069] Exemplarily, the cross-sectional area of the fusing groove 117 can meet the over-current capacity of the battery.
[0070] Exemplarily, along the second direction (such as Figure 7 the Y direction in
[0071] ), the terminal connecting portion 111 is within the range of the fusing groove 117. Figure 7 As Figure 8 , the fusing groove 117 is located among two adjacent tab connecting portions 112 and the terminal connecting portion 111. As
[0072] , compared with the thickness of the fusing portion 115, the thickness L1 of the main body 100 at the fusing groove 117 position is further reduced (i.e., L1 < L). Combining the foregoing content, when one of the bare battery cells 300 connected to the adapter piece 100 has a thermal runaway, the side of the main body 110 at the fusing groove 117 position close to the bare battery cell 300 will fuse more quickly, further improving the overall safety performance of the battery.
[0073] A battery includes the adapter piece 100 as described in the above various embodiments, and the adapter piece 100 is connected to the positive terminal and / or negative terminal of the battery.
[0074] Exemplarily, the battery can be a square shell battery.
[0075] As Figure 6, in some embodiments, the battery further includes a bare battery cell 300; the tab 310 of the bare battery cell 300 is connected to the tab connection area 112-1 of the tab connection portion 112, and the center of the bare battery cell 300 and the tab connection area 112-1 are located in the same plane.
[0076] The center of the bare battery cell 300 is located on the vertical center line of the bare battery cell 300 (such as Figure 6 the dotted line in).
[0077] When the center of the bare battery cell 300 and the tab connection area 112-1 are located in the same plane, multiple tabs 310 of the same electrical property of the bare battery cell 300 can be brought together towards the tab 310 located at the center position of the bare battery cell 300. In this way, along the thickness direction of the bare battery cell 300 (such as Figure 6 the U direction in), after multiple tabs 310 are welded together, the extension of the tabs 310 is in a symmetric state. In this state, the length of the tabs 310 is appropriate, which can further prevent the situation of reverse insertion of the tabs 310 caused by redundant tabs 310.
[0078] Such as Figure 9 , Figure 9 shows a partial schematic diagram of a battery of the second structure. In some embodiments, the tab 310 is welded to the tab connection portion 112 to form a tab weld mark 400; along the direction perpendicular to the side wall 114, the orthographic projection of the tab weld mark 400 in the tab connection area 112-1 is located inside the tab connection area 112-1.
[0079] Exemplarily, when both the tab connection area 112-1 and the tab weld mark 400 are rectangular, the length of the tab connection area 112-1 ≥ A * the length of the tab weld mark 400, and the width of the tab connection area 112-1 ≥ A * the width of the tab weld mark 400, where the coefficient A is 1.1 to 1.5. For example, A is 1.1, 1.2, 1.3, 1.4, or 1.5.
[0080] Designing the size of the tab connection area 112-1 to be larger than the size of the tab weld mark 400 can ensure reliable welding of the tab 310 to the side wall 114 of the tab connection area 112-1, prevent the occurrence of false welding, and ensure a reliable electrical connection between the tab 310 of the bare battery cell 300 and the tab connection portion 112 of the adapter plate 100, which helps to improve the battery quality.
[0081] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the above embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0082] Each embodiment in the present application is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.
[0083] The description of the present application is given for purposes of illustration and description, and is not intended to be exhaustive or to limit the present application to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present application and its practical application, and to enable those of ordinary skill in the art to understand the present application and design various embodiments with various modifications suitable for specific purposes.
[0084] Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present application is limited to these examples; within the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.
[0085] Although the present application has been described in connection with specific embodiments of the present application, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description.
[0086] The embodiments of the present application are intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included within the protection scope of the present application.
Claims
1. An adapter piece, characterized in that, Comprising: A main body including a pole connection part and at least two tab connection parts arranged in the same plane; the main body includes a plate surface and side walls connected to the edge of the plate surface, the pole connection part is provided with a pole connection area for electrically connecting with the pole of the battery, the pole connection area is located on the plate surface, the tab connection part is provided with a tab connection area for electrically connecting with the tab of the battery, and the tab connection area is located on the side wall.
2. The adapter sheet according to claim 1, wherein The main body further includes a fusing part, the fusing part is connected between the pole connection part and the tab connection part, and between adjacent tab connection parts; the direction perpendicular to the plate surface is defined as the thickness direction of the main body, the thickness of the fusing part is less than the thickness of the tab connection part and less than the thickness of the pole connection part.
3. The adapter sheet according to claim 2, characterized in that, The thickness of the pole connection part is not less than the thickness of the tab connection part.
4. The adapter sheet according to claim 2, characterized in that, A hollowed-out area is provided in the fusing part between two adjacent tab connection parts, along the thickness direction of the main body, the hollowed-out area penetrates the main body; one end of the hollowed-out area is close to the pole connection part, and the other end extends to the edge of the main body to at least separate the ends of two tab connection parts far from the pole connection part from each other.
5. The adapter sheet according to claim 4, characterized in that, At least one side surface of the fusing part is provided with a fusing groove, the fusing groove is located between two adjacent tab connection parts, and one end of the fusing groove extends to the pole connection part and the other end extends to the hollowed-out area.
6. The adapter sheet according to claim 1, wherein, The tab connection area is provided with a plurality of welding protrusions protruding from the side wall, and the plurality of welding protrusions are arranged in an array in the tab connection area.
7. The adapter sheet according to claim 1, wherein There are two tab connection parts, and the two tab connection parts are symmetrically distributed on opposite sides of the pole connection part, and the tab connection areas are arranged on the surfaces of the two tab connection parts away from each other.
8. A battery, characterized in that, Comprising the adapter plate according to any one of claims 1-7, the adapter plate is connected to the positive pole and / or negative pole of the battery.
9. The battery according to claim 8, characterized in that, The battery further includes a bare battery cell; the tab of the bare battery cell is connected to the tab connection area of the tab connection part, and the center of the bare battery cell and the tab connection area are located in the same plane.
10. The battery according to claim 9, characterized in that, The tab is welded to the tab connection part to form a tab weld mark; along the direction perpendicular to the side wall, the orthographic projection of the tab weld mark in the tab connection area is located inside the tab connection area.