Pole stamping mechanism

Abstract

The utility model provides a kind of pole stamping mechanism, it is related to battery processing equipment technical field.Pole stamping mechanism includes forming die, and one end of forming die is equipped with processing groove, and processing groove is recessed to the inside of forming die along first direction.Processing groove includes first recessed part and second recessed part, and first recessed part is the deepest center area of recess of processing groove, and first direction is perpendicular to first recessed part, and second recessed part surrounds first recessed part, and the first end of second recessed part is connected with the periphery of first recessed part, along first direction, the distance between the second end of second recessed part, which is away from first recessed part, and first end is H, H>0, so that after forming die processes pole, pole non-flanging area can be protruded to the outside of pole relative to pole flanging area, more convenient for subsequent welding operation of pole non-flanging area.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery processing equipment technical field, especially relates to a pole stamping mechanism. BACKGROUND

[0002] Secondary battery includes cover plate and installs the pole on the cover plate, prior art discloses a kind of not through riveting block and pole riveting to fix pole on cover plate, specifically, pole includes body and annular protrusion at one end of body, protrusion is formed by stamping of pole stamping mechanism Stamping forms flanging, so that pole is fixed on cover plate. However, the existing pole stamping mechanism is only formed by single stamping to form the final flanging, the deformation degree of protrusion is larger, and cracking is prone to occur in the deformation process. In addition, the flanging formed after stamping may not be flush with the end face of the body, and the flanging may be higher than the body. The end face of the body needs to be connected with an electrical connector (such as a busbar), and the flanging higher than the end face of the body is not convenient for subsequent welding process of the body and the electrical connector. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defect that the connecting surface of the pole is a plane after the pole stamping mechanism of the prior art forms flanging, which leads to inconvenience in welding the pole. The utility model provides a pole stamping mechanism.

[0004] The utility model solves the above technical problems by the following technical scheme:

[0005] The utility model provides a kind of pole stamping mechanism, the pole stamping mechanism includes forming die, one end of the forming die is equipped with processing groove, the processing groove is recessed to the inside of the forming die along first direction;

[0006] The processing groove includes first recessed part and second recessed part, the first recessed part is the deepest central region of the recess of the processing groove, the first direction is perpendicular to the first recessed part, the second recessed part surrounds the first recessed part, the first end of the second recessed part is connected with the periphery of the first recessed part, along the first direction, the distance between the second end of the second recessed part away from the first recessed part and the first end is H, H>0.

[0007] In the scheme, one end of the forming die is provided with a processing groove, when the forming die is used to process the pole, the forming die moves towards the pole along the first direction, and the processing groove contacts the pole to punch the pole. The processing groove comprises a first recess and a second recess, the first recess is the center area of the deepest recess of the processing groove, and the second recess is arranged around the outer periphery of the first recess, the first recess is used to abut the non-flanging area of the pole, and the second recess is used to abut the flanging area of the pole. Along the first direction, the distance between the second end of the second recess away from the first end of the first recess is H, H>0, so that after the forming die processes the pole, the non-flanging area of the pole can protrude outward relative to the flanging area of the pole, which is more convenient for subsequent welding operation of the non-flanging area of the pole.

[0008] Preferably, the first recess is a plane, and the second recess is an inclined surface, and the second recess is arranged at an angle with the first recess.

[0009] In the scheme, by setting the first recess as a plane and the second recess as an inclined surface, and arranging the second recess at an angle with the first recess, on the one hand, the structure of the processing groove is more simple, and on the other hand, the processing groove is more matched with the shape of the pole, and the flanging forming effect of the pole is better.

[0010] Preferably, the included angle between the second recess and the first plane is α, 0<α<15°, wherein the first plane is perpendicular to the first direction.

[0011] In the scheme, by setting the included angle between the second recess and the first plane to satisfy 0<α<15°, on the one hand, it avoids that the included angle between the first recess and the second recess is too large to cause excessive deformation during flanging processing and cause the pole to crack, and on the other hand, it can prevent the overall pole from being too high to occupy more space while ensuring that the flanging area of the pole has sufficient width to connect with the cover plate, so that the overall structure of the battery is more compact.

[0012] Preferably, the first recess is an oblong shape, the length from the center of the oblong shape to one end of the oblong shape in the length direction of the oblong shape is , and the width of the second recess along the length direction of the oblong shape is , .

[0013] In the scheme, by setting the first recess and the second recess to satisfy , so that after the forming die processes the pole, the width of the flanging area of the pole is not too large, and at the same time, the non-flanging area of the pole has sufficient width for welding.

[0014] ​​Preferably, the forming die further comprises a guide part, which is an annular protrusion and surrounds the processing groove, and the guide part is connected with the second end.

[0015] In this scheme, by setting the guide part which is an annular protrusion and surrounds the processing groove, when the forming die processes the pole post, the guide part is located outside the flanging area of the pole post, and the guide part plays a limiting and guiding role on the pole post, so that the processing position is more accurate.

[0016] Preferably, the pole post stamping mechanism comprises a first die, a second die, and an Nth die (N is a positive integer greater than or equal to 3), and the Nth die is the forming die.

[0017] In this scheme, the pole post stamping mechanism can contain more than or equal to 3 dies, and the Nth die is the forming die. By setting multiple dies to successively stamp the flange, the flange can be gradually formed multiple times, avoiding excessive deformation of the pole post that leads to cracking.

[0018] Preferably, the first die and the second die are respectively provided with a first processing protrusion and a second processing protrusion, and the first processing protrusion and the second processing protrusion respectively protrude outward along the first direction from the first die and the second die.

[0019] The first processing protrusion comprises a first protruding part and a second protruding part, the first protruding part is the center area of the first processing protrusion that protrudes the deepest, the first direction is perpendicular to the first protruding part, the second protruding part surrounds the first protruding part, the first end of the second protruding part is connected with the outer periphery of the first protruding part, the first protruding part is a plane, the second protruding part is an inclined plane, and the included angle between the first protruding part and the second protruding part is ;

[0020] The second processing protrusion comprises a third protruding part and a fourth protruding part, the third protruding part is the center area of the second processing protrusion that protrudes the deepest, the first direction is perpendicular to the third protruding part, the fourth protruding part surrounds the third protruding part, the first end of the fourth protruding part is connected with the outer periphery of the third protruding part, the third protruding part is a plane, the fourth protruding part is an inclined plane, and the included angle between the third protruding part and the fourth protruding part is , wherein < .

[0021] In this design, the first mold has a first processing protrusion, which includes a first protruding portion and a second protruding portion. The first protruding portion is planar and abuts against the non-flanged area of ​​the electrode post, while the second protruding portion abuts against the flanged area of ​​the electrode post. Similarly, the second mold has a second processing protrusion, which includes a third protruding portion and a fourth protruding portion. The third protruding portion is planar and abuts against the non-flanged area of ​​the electrode post, while the fourth protruding portion abuts against the flanged area of ​​the electrode post. The structures of the first and second processing protrusions are relatively simple, facilitating the gradual forming process of the electrode post flange. The angle between the first and second protruding portions is [insert angle here]. The angle between the third protrusion and the fourth protrusion is By < This allows for gradual processing of the pole post flange, preventing excessive deformation in a single operation from causing the flange to crack.

[0022] Preferably, the included angle between the first recess and the second recess is . , ≥180°.

[0023] In this scheme, by With an angle of ≥180°, the flanged area and the non-flared area of ​​the pole post can form an angle greater than 180° after the pole post is processed by the forming mold, which makes it easier for subsequent welding operations on the non-flared area of ​​the pole post.

[0024] Preferably, the included angle between the first protrusion and the second protrusion is in the range of 90° < ≤120°.

[0025] In this solution, by setting the included angle between the first protrusion and the second protrusion to between 90° and 120°, the flange deformation is kept within a suitable range when the electrode post is stamped for the first time using the first mold, thus avoiding excessive deformation of the electrode post that could lead to cracking.

[0026] Preferably, the included angle between the third protrusion and the fourth protrusion is in the range of 110° < ≤170°.

[0027] In this solution, by setting the included angle between the third protrusion and the fourth protrusion to between 110° and 170°, the flange deformation is kept within a suitable range when the pole post is stamped for the second time using the second mold, thus avoiding excessive deformation of the pole post that could lead to cracking.

[0028] The positive and progressive effects of this utility model are as follows:

[0029] One end of the forming die is provided with a processing groove, when the forming die is used to process the pole, the forming die moves towards the pole along a first direction, and the processing groove contacts the pole to punch the pole. The processing groove comprises a first recess and a second recess, the first recess is a central area with the deepest recess of the processing groove, and the second recess is arranged around the outer periphery of the first recess, the first recess is used to abut the non-flanging area of the pole, and the second recess is used to abut the flanging area of the pole. Along the first direction, the distance between the second end of the second recess away from the first end of the first recess is H, and H>0, so that after the forming die processes the pole, the non-flanging area of the pole can protrude outward of the pole relative to the flanging area of the pole, and the subsequent welding operation of the non-flanging area of the pole is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of the initial state of the pole processed according to an embodiment of the utility model.

[0031] Figure 2 A sectional view of the initial state of the pole processed according to an embodiment of the utility model.

[0032] Figure 3 A schematic diagram of the three-dimensional structure of the pole fixed to the cover plate processed according to an embodiment of the utility model.

[0033] Figure 4 A schematic diagram of the three-dimensional structure of the forming die according to an embodiment of the utility model.

[0034] Figure 5 A sectional view of the forming die according to an embodiment of the utility model.

[0035] Figure 6 A schematic diagram of the three-dimensional structure of the forming die according to an embodiment of the utility model. Figure 5

[0036] Figure 7 A sectional view of the pole processed by the forming die according to an embodiment of the utility model.

[0037] Figure 8 A schematic diagram of the three-dimensional structure of the first die according to an embodiment of the utility model.

[0038] Figure 9 A sectional view of the first die according to an embodiment of the utility model.

[0039] Figure 10 A sectional view of the pole processed by the first die according to an embodiment of the utility model.

[0040] Figure 11 A schematic diagram of the three-dimensional structure of the second die according to an embodiment of the utility model.

[0041] ​Figure 12 is a cross-sectional view of a second mold according to an embodiment of the present utility model.

[0042] Figure 13 is a cross-sectional view of a second mold processing a pole according to an embodiment of the present utility model.

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] pole 100

[0045] main body 110

[0046] flange 120

[0047] protrusion 130

[0048] cover plate 140

[0049] pole flange region 150

[0050] pole non-flange region 160

[0051] forming mold 200

[0052] processing groove 210

[0053] first recess 220

[0054] second recess 230

[0055] guide portion 240

[0056] first mold 300

[0057] first processing protrusion 310

[0058] first protrusion portion 311

[0059] second protrusion portion 312

[0060] second mold 400

[0061] second processing protrusion 410

[0062] third protrusion portion 411

[0063] fourth protrusion portion 412

[0064] first direction x

[0065] first plane y DETAILED DESCRIPTION

[0066] The present utility model will be further explained by way of examples below, but the present utility model is not limited in the following examples.

[0067] As Figures 1-3 and Figure 7As shown, the embodiment provides a pole stamping mechanism for stamping a pole 100 to form a flange 120. The pole 100 in an initial state includes a main body 110 and a protrusion 130 protruding outward from the main body 110. The pole stamping mechanism stamps the pole 100 to fold the protrusion 130 outward to form the flange 120, so as to fix the pole 100 on a cover plate 140 of a secondary battery.

[0068] As shown, Figures 4-13 The pole stamping mechanism includes a first die 300, a second die 400, and an Nth die (N is a positive integer greater than or equal to 3) which is a forming die 200. By setting multiple dies to sequentially stamp the flange 120 multiple times, the flange 120 can be gradually formed multiple times, avoiding excessive deformation of the pole 100 which may cause the pole 100 to crack.

[0069] In the embodiment, the pole stamping mechanism includes three dies, i.e., the first die 300, the second die 400, and the forming die 200. In other embodiments, only one forming die 200 can be provided, or more than three dies can be provided, and the specific number of dies can be selected by a person skilled in the art according to actual conditions.

[0070] As shown, Figures 4-7 The forming die 200 is provided with a processing groove 210 at one end. The processing groove 210 is recessed inward along a first direction x of the forming die 200. When the forming die 200 is used to process the pole 100, the forming die 200 moves toward the pole 100 along the first direction x, and the processing groove 210 contacts the pole 100 to stamp the pole 100.

[0071] The processing groove 210 includes a first recessed portion 220 and a second recessed portion 230. The first recessed portion 220 is a central area of the processing groove 210 with the deepest recess. The first direction x is perpendicular to the first recessed portion 220. The second recessed portion 230 surrounds the first recessed portion 220. A first end of the second recessed portion 230 is connected to the outer periphery of the first recessed portion 220. The first recessed portion 220 is used to abut the non-flange area 160 of the pole, and the second recessed portion 230 is used to abut the flange area 150 of the pole. Along the first direction x, the distance between the second end of the second recessed portion 230 away from the first recessed portion 220 and the first end is H, and H>0. Therefore, after the forming die 200 processes the pole 100, the non-flange area 160 of the pole can protrude outward relative to the flange area 150 of the pole, which is more convenient for subsequent welding operations of the non-flange area 160 of the pole.

[0072] In the embodiment, the first recess 220 is a flat surface, and the second recess 230 is an inclined surface. The second recess 230 is arranged at an angle with the first recess 220. On the one hand, the structure of the processing groove 210 is more simple. On the other hand, the processing groove 210 is more matched with the shape of the pole post 100, and the flanging effect of the flange 120 of the pole post 100 is better. In other embodiments, other specific shapes of the first recess 220 and the second recess 230 that are considered appropriate by those skilled in the art can also be selected.

[0073] As shown in Figure 6 , the angle between the second recess 230 and the first plane y is a, and 0 < a < 15°, wherein the first plane y is perpendicular to the first direction x. By satisfying 0 < a < 15° for the angle between the second recess 230 and the first plane y, on the one hand, the deformation of the flange 120 during processing is avoided to be too large due to the large angle between the first recess 220 and the second recess 230, so that the pole post 100 is cracked. On the other hand, the overall height of the pole post 100 is prevented from being too high to occupy more space, so that the overall structure of the battery is more compact, while ensuring that the flange area 150 of the pole post is connected to the cover plate 140 with sufficient width.

[0074] The first recess 220 is an oblong shape. The length from the center of the oblong shape to one end of the oblong shape in the length direction of the oblong shape is , and the width of the second recess 230 along the length direction of the oblong shape is , < , so that after the forming die 200 processes the pole post 100, the width of the pole post flange area 150 is not too large, and at the same time, the pole post non-flange area 160 has sufficient width for welding.

[0075] The width of the second recess 230 can be in the range of: ≤5mm, so that after the forming die 200 processes the pole post 100, the width of the pole post flange area 150 is within an appropriate size, avoiding that the width is too small to play a fixing role, and also avoiding that the width is too large to affect the welding effect of the pole post non-flange area 160.

[0076] The forming die 200 further comprises a guide portion 240, which is an annular protrusion 130 and surrounds the processing groove 210. The guide portion 240 is connected with the second end. When the forming die 200 processes the pole post 100, the guide portion 240 is located outside the pole post flange area 150. The guide portion 240 plays a limiting and guiding role for the pole post 100, so that the processing position is more accurate.

[0077] As shown in Figures 8-13As shown, the first mold 300 and the second mold 400 are respectively provided with a first processing protrusion 310 and a second processing protrusion 410, and the first processing protrusion 310 and the second processing protrusion 410 protrude outwards of the first mold 300 and the second mold 400 along the first direction x.

[0078] The first processing protrusion 310 includes a first protrusion 311 and a second protrusion 312. The first protrusion 311 is the deepest central region of the first processing protrusion 310, and the first direction x is perpendicular to the first protrusion 311. The second protrusion 312 surrounds the first protrusion 311, and the first end of the second protrusion 312 is connected to the outer periphery of the first protrusion 311. The first protrusion 311 is used to abut against the non-flanged area 160 of the pole post, and the second protrusion 312 is used to abut against the flanged area 150 of the pole post. The first protrusion 311 is a plane, and the second protrusion 312 is an inclined plane. The angle between the first protrusion 311 and the second protrusion 312 is [missing information]. .

[0079] The second processing protrusion 410 includes a third protrusion 411 and a fourth protrusion 412. The third protrusion 411 is the deepest central region of the second processing protrusion 410, and the first direction x is perpendicular to the third protrusion 411. The fourth protrusion 412 surrounds the third protrusion 411, and the first end of the fourth protrusion 412 is connected to the outer periphery of the third protrusion 411. The third protrusion 411 is used to abut against the non-flanged area 160 of the pole post, and the fourth protrusion 412 is used to abut against the flanged area 150 of the pole post. The third protrusion 411 is a plane, and the fourth protrusion 412 is an inclined plane. The angle between the third protrusion 411 and the fourth protrusion 412 is [missing information]. .

[0080] The first processing protrusion 310 and the second processing protrusion 410 have relatively simple structures, facilitating the gradual forming of the flange 120 of the pole post 100. Among them, < This allows for the gradual processing of the pole post 100 and the flange 120, avoiding excessive deformation in a single operation that could cause the flange 120 to crack.

[0081] The included angle between the first protrusion 311 and the second protrusion 312 is within the range of 90° < The angle is ≤120°, so that when the pole post 100 is stamped for the first time using the first mold 300, the deformation of the flange 120 is within a suitable range, avoiding excessive deformation of the pole post 100 that could lead to cracking.

[0082] The included angle between the third protrusion 411 and the fourth protrusion 412 is within the range of 110° < The angle is ≤170°, so that when the pole post 100 is stamped for the second time using the second mold 400, the deformation of the flange 120 is within a suitable range, avoiding excessive deformation of the pole post 100 that could lead to cracking.

[0083] The included angle of the first recess 220 and the second recess 230 is , ≥180°, so that the pole post flange area 150 and the pole post non-flange area 160 can form an included angle greater than 180° after the forming die 200 processes the pole post 100, which is more convenient for subsequent welding operation of the pole post non-flange area 160. The specific size of and may be selected according to actual needs by those skilled in the art.

[0084] In the embodiment, the first protruding part 311 and the second protruding part 312 are connected by chamfer, and the third protruding part 411 and the fourth protruding part 412 are also connected by chamfer, so as to avoid collision with the pole post 100 at the corner.

[0085] Further, the chamfer is preferably a round chamfer to avoid stress concentration. In other alternative embodiments, the chamfer can also be a flat chamfer.

[0086] In the embodiment, the pole post 100 is a long circular structure, and the shapes of the first die 300, the second die 400 and the forming die 200 are matched with the long circular structure. In other embodiments, those skilled in the art can determine the specific shape of each die of the pole post stamping mechanism according to the shape of the pole post 100.

[0087] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship of the device or element in the normal use, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element must have a specific orientation at any time, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model in this respect.

[0088] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A pole stamping mechanism, characterized in that, The pole stamping mechanism includes a forming mold, one end of which is provided with a processing groove, which is recessed into the interior of the forming mold along a first direction; The processing groove includes a first recess and a second recess. The first recess is the deepest central region of the processing groove. The first direction is perpendicular to the first recess. The second recess surrounds the first recess. The first end of the second recess is connected to the outer periphery of the first recess. Along the first direction, the distance between the second end of the second recess away from the first recess and the first end is H, where H > 0.

2. The pole stamping mechanism as described in claim 1, characterized in that, The first recess is a plane, the second recess is an inclined plane, and the second recess is set at an angle to the first recess.

3. The pole stamping mechanism as described in claim 2, characterized in that, The angle between the second recess and the first plane is α, where 0 < α < 15°, and the first plane is perpendicular to the first direction.

4. The pole stamping mechanism as described in claim 2, characterized in that, The first recess is an oblong shape, and the length from the center of the oblong shape to one end of the oblong shape along its length direction is... Along the length of the oblong shape, the width of the second recess is , < .

5. The pole stamping mechanism as described in claim 1, characterized in that, The molding die also includes a guide portion, which is an annular protrusion surrounding the processing groove, and the guide portion is connected to the second end.

6. The pole stamping mechanism as described in claim 1, characterized in that, The pole stamping mechanism includes a first mold, a second mold, ..., an Nth mold (N is a positive integer greater than or equal to 3), and the Nth mold is the forming mold.

7. The pole stamping mechanism as described in claim 6, characterized in that, The first mold and the second mold are respectively provided with a first processing protrusion and a second processing protrusion, and the first processing protrusion and the second processing protrusion protrude outward from the first mold and the second mold respectively along the first direction; The first processed protrusion includes a first protrusion and a second protrusion. The first protrusion is the deepest central region of the first processed protrusion. The first direction is perpendicular to the first protrusion. The second protrusion surrounds the first protrusion. The first end of the second protrusion is connected to the outer periphery of the first protrusion. The first protrusion is a plane, and the second protrusion is an inclined plane. The angle between the first protrusion and the second protrusion is [missing information]. ; The second processed protrusion includes a third protrusion and a fourth protrusion. The third protrusion is the deepest central region of the second processed protrusion. The first direction is perpendicular to the third protrusion. The fourth protrusion surrounds the third protrusion, and its first end is connected to the outer periphery of the third protrusion. The third protrusion is planar, and the fourth protrusion is inclined. The angle between the third and fourth protrusions is [insert angle here]. ,in, < .

8. The pole stamping mechanism as described in claim 7, characterized in that, The angle between the first recess and the second recess is , ≥180°.

9. The pole stamping mechanism as described in claim 7, characterized in that, The included angle between the first protrusion and the second protrusion is in the range of 90° < ≤120°.

10. The pole stamping mechanism as described in claim 7, characterized in that, The included angle between the third protrusion and the fourth protrusion is within the range of 110° < ≤170°.

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