Adapter and battery
By setting grooves and notches on the bending plate of the adapter, the problem of difficulty in flattening caused by the increase in the thickness of the adapter is solved, and more efficient processing and more stable battery connection are achieved.
Patent Information
- Application Number
- CN202422673642.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The increased thickness of the adapter makes it difficult to flatten the tabs and the adapter, which can easily cause damage to the pins.
Scores are set on the bending plate to guide stress distribution and reduce bending difficulty. V-shaped and arc transition score designs are used to reduce stress concentration, and notches are set to reduce processing difficulty.
This reduces the difficulty of bending the bending plate, improves processing efficiency, reduces the risk of material damage and breakage, and ensures the stability and safety of the battery system.
Smart Images
Figure CN223884592U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a battery field, concretely relates to a switching piece and battery. BACKGROUND
[0002] In the common battery cell structure, the tab is usually welded to a switching piece connected with the pole, and the electrical connection between the tab and the pole is realized through the switching piece, so that the current of the battery cell is conducted from the inside to the outside of the battery cell. After the tab is welded, the tab and the switching piece need to be folded flat, but the charging rate requirement of the battery cell is increasing with the development of the industry, so the thickness of the switching piece also needs to be increased to have appropriate current-carrying capacity. With the increase of the thickness of the switching piece, it is more and more difficult to fold the part of the tab and the switching piece welded flat, and the problem of pin damage is easily caused in the process. SUMMARY
[0003] The embodiment of the utility model provides a switching piece and battery for solving the problem that the tab and the switching piece are difficult to fold flat due to the thick switching piece in the related art.
[0004] In a first aspect, the embodiment of the utility model provides a switching piece, which comprises:
[0005] A connecting plate is used for connecting the pole, and a pin plate is used for connecting the tab and is connected to one side of the connecting plate through a bending plate; wherein the bending plate is provided with at least one notch.
[0006] In an embodiment, the at least one notch comprises a first notch and a second notch, the first notch is close to the connecting plate, and the second notch is close to the pin plate.
[0007] In an embodiment, the width of the top of the first notch is greater than the width of the bottom of the first notch.
[0008] In an embodiment, the first notch is V-shaped.
[0009] In an embodiment, the width of the top of the second notch is greater than the width of the bottom of the second notch.
[0010] In an embodiment, the multiple inner walls of the second notch are transitioned by arcs.
[0011] In an embodiment, 0.05*T≤W1≤T, T≤W2≤5*T; wherein T is the thickness of the bending plate, W1 is the width of the top of the first notch, and W2 is the width of the top of the second notch.
[0012] In an embodiment, 0.25*T≤D1≤0.75*T, 0.35*T≤D2≤0.6*T; wherein T is the thickness of the bending plate, D1 is the depth of the first notch, and D2 is the depth of the second notch.
[0013] In an embodiment, the other side of the connecting plate is provided with a holding piece, which is arranged opposite to the bending plate and used for mounting a tool.
[0014] In a second aspect, the embodiment of the utility model also provides a battery which comprises the adapter of the first aspect.
[0015] The utility model provides a kind of adapter and battery, wherein, adapter includes connecting plate and pin plate, connecting plate is connected to the pole of battery, pin plate is welded to the pole lug of battery, and it is connected with the one side of connecting plate by bending plate, the end of bending plate connected pin plate can be bent relative to the other end of connecting plate, and battery realizes the electrical connection between pole and pole lug by adapter.Bending plate is provided with at least one notch.The adapter provided in the embodiment of the utility model, by being provided with notch on bending plate, since notch can produce stress concentration phenomenon in the structure inside bending plate, so that the stress of the position of notch will be more concentrated than the stress of other positions of bending plate in the process of bending, so that the material of notch is more prone to deformation, and this stress concentration phenomenon makes notch become the weak point of bending plate, to reduce the difficulty of bending of bending plate. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be simply introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.
[0017] Figure 1 It is the structure schematic view of adapter provided in the embodiment of the utility model;
[0018] Figure 2 It is the structure schematic view of adapter from another perspective;
[0019] Figure 3 It is the structure schematic view of adapter from another perspective;
[0020] Figure 4 It is Figure 3 The enlarged view of A part in it;
[0021] Figure 5 It is Figure 3 The enlarged view of B part in it;
[0022] Figure 6 It is Figure 4 The enlarged view of first notch in it;
[0023] Figure 7 It is Figure 3 The enlarged view of A part in it;
[0024] BRIEF DESCRIPTION OF DRAWINGS
[0025] 100, adapter; 110, connecting plate; 120, pin plate; 130, bending plate; 140, score; 141, first score; 142, second score; 150, notch; 160, holder. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless stated otherwise, the orientation words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing in the drawings; and "inner" and "outer" refer to the outline of the device.
[0027] With the rapid development of electric vehicles and other industries, the charging rate demand of batteries is also increasing. In order to ensure that the battery can work normally at a high charging rate, the thickness of the adapter that bears the overcurrent function in the battery is also designed to be relatively thick. However, the relatively thick adapter is not easy to deform.
[0028] In order to solve the problem that the adapter is difficult to be folded flat with the tab due to the relatively thick thickness of the adapter in the related art, embodiments of the present application provide an adapter, please refer to Figure 1 、 Figure 2 , Figure 1 is a structural schematic view of the adapter 100 provided by the embodiments of the present application, Figure 2 is a structural schematic view of the adapter 100 from another perspective. The battery realizes the electrical connection between the pole and the tab through the adapter 100 to realize the conduction of the battery current from the inside to the outside of the battery. Please refer to Figure 3 、 Figure 4 , Figure 3 is a structural schematic view of the adapter 100 from another perspective, Figure 4 is Figure 3The enlarged view of the middle A part, wherein the adapter 100 comprises a connecting plate 110 and a pin plate 120, the connecting plate 110 is used to be electrically connected to the pole of the battery, the pin plate 120 is used to be welded to the pole tab of the battery, and the connecting plate 110 is connected to one side of the pin plate 120 through a bending plate 130, the bending plate 130 is provided with at least one notch 140, and one end of the bending plate 130 connected to the pin plate 120 can be bent relative to the other end connected to the connecting plate 110 along the notch 140 to realize the flattening of the pole tab welded to the bending plate 130.
[0029] It is easy to understand that the length direction of the notch 140 provided on the bending plate 130 should be perpendicular to the bending direction of the bending plate 130. This structural design can effectively guide the bending plate 130 to bend along the notch 140 when an external force is applied to the bending plate 130 to make it bend.
[0030] In the embodiment, the notch 140 is provided on the bending plate 130. The existence of the notch 140 effectively reduces the bending difficulty of the bending plate 130 by guiding the stress distribution of the bending plate 130 during the bending process, reduces the requirements of the tooling equipment, and improves the processing efficiency. Specifically, when the bending plate 130 is bent, the position where the notch 140 is located will have a significant stress concentration phenomenon. This structural design locally weakens the bending resistance of the bending plate 130, so that the material at the notch 140 is more likely to deform, thereby making the bending operation easier to complete.
[0031] In some embodiments, please refer to Figure 4 The notch 140 provided on the bending plate 130 comprises a first notch 141 and a second notch 142. The first notch 141 is located close to the connecting plate 110, and the second notch 142 is located close to the pin plate 120. The first notch 141 and the second notch 142 are arranged in a spaced manner, so that the bending plate 130 can be gradually bent along the two notches until the bending plate 130 and the pole tab welded to the bending plate 130 are bent to the required angle.
[0032] In actual operation, the bending position of the bending plate 130 will face stress concentration during the bending process, which will cause the problem of material extrusion or structural fracture. In order to solve this problem, the first notch 141 and the second notch 142 are arranged on the bending plate 130, which can effectively guide the stress distribution of the bending plate 130 during the bending process, thereby solving the above problem. Specifically, when a force is applied to the bending plate 130, the first notch 141 and the second notch 142 will form two bending tracks on the bending plate 130, respectively. This means that the bending force applied will not be too concentrated in one point, but will be dispersed to multiple positions through the two notches, prompting the bending plate 130 to gradually bend in the area between the two notches. This structural design enables the bending plate 130 to deform in a more uniform manner, thereby reducing the local stress concentration during the bending process.
[0033] Compared with the traditional design, this structural design reduces the risk of material extrusion by reducing the stress concentration at a certain point, thereby reducing the possibility of fracture or failure, so that the overall stability of the bending plate 130 during the bending process can be significantly improved.
[0034] In some embodiments, please refer to Figure 6 , Figure 6 is Figure 4 an enlarged view of the first notch 141, the top width W1 of the first notch 141 is designed to be greater than the bottom width of the first notch 141. Specifically, the top width W1 of the first notch 141 is designed to be wider, so that the stress generated during bending can be concentrated at the bottom of the first notch 141. On the one hand, this structural design ensures that the bending plate 130 is more likely to bend at the position of the first notch 141. On the other hand, the wider opening portion can also increase the plastic deformation area of the material. When the bending plate 130 bends, a part of the material will be extruded to the bending position, causing the phenomenon of "material extrusion", and the opening portion of the first notch 141 can provide space for these materials, reducing the risk of material extrusion of the bending plate 130.
[0035] Further, in order to better realize the bending of the bending plate 130, in some embodiments, the first notch 141 is designed to be V-shaped. Specifically, the shape feature of the first notch 141 is that the two side walls gradually shrink inward from the opening until they intersect at the bottom and form a relatively sharp angle.
[0036] In the present embodiment, the V-shaped structure enables the external force applied to the bending plate 130 to be effectively concentrated at the bottom of the first notch 141. When the external force is applied to the bending plate 130, the sharp corner of the V-shaped structure becomes the stress concentration point, i.e., the external force is transmitted along the inclined surface of the V-shaped structure, so that the stress can be concentrated at the bottom of the notch, thereby making the material in this area more prone to deformation, thereby reducing the external force required to bend the bending plate 130 and optimizing the entire bending process. Compared with notches of other shapes, the V-shaped notch performs better in reducing the bending resistance of the material, mainly because the V-shaped design enables the material to concentrate stress at the preset position along the preset trajectory when stressed, thereby reducing the bending difficulty of the bending plate 130. In addition, another important advantage of the V-shaped structure is that it is easy to manufacture, which can effectively improve production efficiency.
[0037] It is easy to understand that the width and depth of the notch 140 have an important influence on the bending difficulty and structural strength of the bending plate 130, and appropriate notch width and notch depth can reduce the bending difficulty of the bending plate 130 and the risk of easy breakage of the bending plate 130.
[0038] In some embodiments, please refer to Figure 7 , Figure 7 is Figure 3 is an enlarged view of part A in FIG. 10B, the top width W2 of the second notch 142 is designed to be greater than the bottom width of the second notch 142. Specifically, on the one hand, the structure design of the wider opening part enables the external stress to be effectively concentrated at the bottom of the second notch 142 when the bending plate 130 is bent, thereby making the bending plate 130 more prone to bending at this position. On the other hand, the opening of the second notch 142 also provides more space for material flow. When the bending plate 130 is bent under the action of external force, part of the material in the bending plate 130 will deviate to the bending position, resulting in a "material extrusion" phenomenon, and the wider opening can provide space for these materials, thereby reducing the risk of "material extrusion" of the bending plate 130.
[0039] In some embodiments, please refer to Figure 7 , the plurality of inner walls surrounding the second notch 142 are designed to be circularly arcuate. This structure design has many advantages. First, by adopting the design of circular arc transition, the shape of the second notch 142 enables the stress to be uniformly distributed at the bottom thereof, and the curved surface of the circular arc can effectively guide the stress to disperse along the curve, thereby reducing the risk of "material extrusion" phenomenon. In addition, the design of circular arc transition is also relatively easy to implement in the processing process. Compared with straight edge design, the circular arc shape can reduce the requirements on the processing equipment when forming and cutting, thereby reducing the cost in the production process.
[0040] In some embodiments, please refer to Figure 6 ,Figure 7 0.05*T≤W1≤T, T≤W2≤5*T, where T is the thickness of the bending plate 130, W1 is the width W1 of the top of the first score 141, and W2 is the width W2 of the top of the second score 142.
[0041] Specifically, in the production process of the adapter 100, the first score 141 is used to guide the material forming and prevent the bending plate 130 from being squeezed during the bending process. Since the equipment tonnage involved in this process is large, the pressure required during production is large, and therefore a first score 141 with a small top width is designed. This can effectively limit the amount of material flow and ensure that the bending plate 130 is not easily deformed during bending to cause damage. The second score 142 is used for bending during battery manufacturing, and compared with the application scenario of the first score 141, the equipment tonnage requirement involved in this process is relatively low, which allows different strategies to be adopted in design. In order to facilitate subsequent bending operations, the top width W2 of the second score 142 is designed to be wide. This design can facilitate the operation of the bending equipment when bending the bending plate 130.
[0042] Experiments have shown that by designing the top width W1 of the first score 141 and the top width W2 of the second score 142 within the above parameter ranges, the bending plate 130 can be easily bent while preventing the bending plate 130 from being squeezed. Specifically, the small width W1 of the first score 141 can better control the material flow and reduce stress concentration, while the wide second score 142 provides convenience for subsequent bending. The combination of this design idea makes the adapter 100 produced finally have higher reliability in battery manufacturing.
[0043] In order to ensure that the bending plate 130 is easy to bend while ensuring the structural strength of the bending plate 130, in some embodiments, please refer to Figure 6 Figure 7 0.25*T≤D1≤0.75*T, 0.35*T≤D2≤0.6*T, where T is the thickness of the pin plate 120, D1 is the depth D1 of the first score 141, and D2 is the depth D2 of the second score 142.
[0044] Experiments show that when the depth D1 of the first notch 141 is less than 1 / 4 of the thickness T of the bending plate 130, the stress distribution in the bending process will be significantly affected. In this case, due to the insufficient depth of the first notch 141, the bending plate 130 cannot effectively concentrate stress at the bottom of the first notch 141, thereby increasing the bending difficulty of the bending plate 130, and also cannot effectively avoid the "extrusion" phenomenon of the bending plate 130. When the depth D1 of the first notch 141 is greater than 3 / 4 of the thickness T of the bending plate 130, the stress concentration phenomenon of the bending plate 130 in the bending process is significantly enhanced. In this case, the bending plate 130 will bear local overload, which is more likely to cause the bending plate 130 to break. This not only affects the structural integrity of the bending plate 130 itself, but also may cause safety hazards to the entire battery system, thereby causing serious safety accidents.
[0045] For the second notch 142, the design of its depth D2 is also crucial to the bending plate 130. When the depth D2 of the second notch 142 is less than 7 / 20 of the thickness T of the bending plate 130, the depth of the second notch 142 is insufficient at this time, so that the bending plate 130 needs to bear greater stress when bending, thereby making the requirements of the bending equipment more demanding, and ultimately leading to a significant increase in the bending difficulty of the bending plate 130. When the depth D2 of the second notch 142 is greater than 3 / 5 of the thickness T of the bending plate 130, the flow capacity of the bending plate 130 may be limited. This is because the depth of the second notch 142 is too deep, resulting in insufficient thickness from the bottom of the second notch 142 to the side of the bending plate close to the bottom, which cannot meet the current flow demand of the battery under high charge and discharge rate, i.e., insufficient flow capacity, which may cause heat accumulation, increase the temperature rise of the battery, and thus reduce the overall performance and safety of the battery.
[0046] In summary, the depth design of the first notch 141 and the second notch 142 is designed more rigorously to ensure that the processing performance and use safety of the bending plate 130 are guaranteed while reducing the processing difficulty.
[0047] In order to further reduce the bending difficulty of the bending plate 130, in some embodiments, please refer to Figure 2 The connecting plate 110 is provided with at least one notch 150. The notch 150 is located at the side of the connecting portion between the connecting plate 110 and the bending plate 130. Specifically, by providing the notch 150 at the side of the connecting portion between the connecting plate 110 and the bending plate 130, the width of the bending plate 130 can be reduced to some extent, thereby reducing the force required to be applied to the bending plate 130 during bending.
[0048] The design of the notch 150 is not limited to a single form, and its shape and size can be adjusted according to actual needs. For example, the notch 150 can be designed as a V-shaped, U-shaped or straight line type, and these different shapes of notches can achieve different degrees of width reduction and be optimized according to the characteristics of the material and the bending angle requirements. In addition, the position of the notch 150 can also be fine-tuned to ensure that the stress distribution between the connecting plate 110 and the bending plate 130 is more uniform during the actual bending process, thereby reducing the risk of material damage caused by stress concentration.
[0049] In summary, by setting a notch 150 on the side of the connecting plate 110 and the bending plate 130, the width of the bending plate 130 can be effectively reduced, the required applied force when bending the bending plate 130 can be reduced, the bending difficulty can be reduced, and the processing efficiency can be improved.
[0050] In some embodiments, referring to Figure 1 , Figure 3 and Figure 5 , one side of the connecting plate 110 is connected with the bending plate 130, and the other side opposite to it is provided with a holding piece 160. The holding piece 160 is used to install a tooling. Specifically, one end of the holding piece 160 is connected with the connecting plate 110 by welding or mechanical fixation, and the other end is bent away from the connecting plate 110 to form a protrusion. This structure design makes the holding piece 160 effectively clamped in a specific position of the tooling when the tooling is installed, to provide reliable support, so that the adapter 100 remains stable during the process of welding the tab to the pin plate 120, prevents welding errors caused by displacement, and thus ensures the reliability of welding.
[0051] In addition, the holding piece 160 acts as a support point when the tooling is installed and operated, which can avoid the problem that the connecting plate 110 is directly deformed by the action force of the tooling. This structure design ensures the reliability of the tab welding process and the structural stability of the connecting plate 110.
[0052] The utility model provides a kind of adapter 100, adapter 100 includes connecting plate 110 and pin plate 120, connecting plate 110 is connected to the pole of battery, pin plate 120 is welded in the pole ear of battery, and it is connected with the side of connecting plate 110 by bending plate 130, the one end of bending plate 130 connecting pin plate 120 can be bent relative to the other end of connecting connecting plate 110, battery is connected between the electric property of pole and pole ear by adapter 100.It is equipped with at least one notch 140, wherein bending plate 130 is provided with notch 140.The adapter 100 provided in the embodiment, by being provided with notch 140 on bending plate 130, when applying external force to bend folding plate 130, the position of notch 140 will experience obvious stress concentration phenomenon, so that the stress at notch 140 is significantly higher than the stress of other areas of bending plate 130, so that the material of this position is more prone to deformation.This stress concentration phenomenon makes notch 140 become the weak point of bending plate 130, so as to reduce the difficulty of bending flat bending part and the pole ear welded in bending part.
[0053] The utility model further provides a kind of battery, battery includes above-mentioned adapter 100, while battery also has the beneficial effects of above-mentioned adapter 100, not repeat here.
[0054] The above embodiment of the utility model is introduced in detail, the principle and implementation mode of the utility model are described in this paper by applying specific examples, the above embodiment is only used to help understand the method and core idea of the utility model;Meanwhile, for the person skilled in the art, according to the idea of the utility model, there will be changes in specific implementation mode and application range, and the content of the specification should not be understood as the limitation of the utility model.
Claims
1. An adapter, characterized in that The utility model relates to a connecting piece for connecting a tab and a pole, comprising: a connecting plate for connecting a pole; and a pin plate for connecting a tab, connected to one side of the connecting plate by a bending plate; wherein the bending plate is provided with at least one notch; at least one of the notches comprises a first notch and a second notch, the first notch is close to the connecting plate, and the second notch is close to the pin plate.
2. The adapter of claim 1, wherein, The width of the top of the first notch is greater than the width of the bottom of the first notch.
3. The adapter of claim 2, wherein, The first notch is V-shaped.
4. The adapter of claim 2, wherein, The width of the top of the second notch is greater than the width of the bottom of the second notch.
5. The adapter of claim 1, wherein, The second notch is transitioned by a circular arc between multiple inner walls.
6. The adapter of claim 4, wherein, 0.05*T≤W1≤T, T≤W2≤5*T; wherein T is the thickness of the bending plate, W1 is the width of the top of the first notch, and W2 is the width of the top of the second notch.
7. The adapter of any one of claims 1-6, wherein, 0.25*T≤D1≤0.75*T, 0.35*T≤D2≤0.6*T; wherein T is the thickness of the bending plate, D1 is the depth of the first notch, and D2 is the depth of the second notch.
8. The adapter of any one of claims 1-6, wherein, The other side of the connecting plate is provided with a retaining member, which is arranged opposite to the bending plate and used for installing a tool.
9. A battery, characterized by The utility model relates to a connecting piece for connecting a tab and a pole, comprising: a connecting plate for connecting a pole; and a pin plate for connecting a tab, connected to one side of the connecting plate by a bending plate; wherein the bending plate is provided with at least one notch; at least one of the notches comprises a first notch and a second notch, the first notch is close to the connecting plate, and the second notch is close to the pin plate. The width of the top of the first notch is greater than the width of the bottom of the first notch. The first notch is V-shaped. The width of the top of the second notch is greater than the width of the bottom of the second notch. The second notch is transitioned by a circular arc between multiple inner walls. 0.05*T≤W1≤T, T≤W2≤5*T; wherein T is the thickness of the bending plate, W1 is the width of the top of the first notch, and W2 is the width of the top of the second notch. 0.25*T≤D1≤0.75*T, 0.35*T≤D2≤0.6*T; wherein T is the thickness of the bending plate, D1 is the depth of the first notch, and D2 is the depth of the second notch. The other side of the connecting plate is provided with a retaining member, which is arranged opposite to the bending plate and used for installing a tool. The utility model relates to a connecting piece for connecting a tab and a pole, comprising: a connecting plate for connecting a pole; and a pin plate for connecting a tab, connected to one side of the connecting plate by a bending plate; wherein the bending plate is provided with at least one notch; at least one of the notches comprises a first notch and a second notch, the first notch is close to the connecting plate, and the second notch is close to the pin plate. The width of the top of the first notch is greater than the width of