Rapid stamping and slitting die for power battery copper-aluminum flexible connecting piece after welding

Abstract

The utility model relates to the technical field of power battery processing, and discloses a rapid stamping and slitting die for a power battery copper-aluminum flexible connecting piece after welding, which comprises an upper die holder and a lower die holder, an upper die plate is arranged on the upper die holder, a plurality of upper die punches are arranged on the upper die plate, and the upper die punches are distributed side by side at intervals; a lower die plate is arranged on the lower die base, lower die cavities distributed in one-to-one correspondence with the upper die punches are formed in the lower die plate, the edge opening of each lower die cavity is used for being matched with the side edge of the corresponding upper die punch to achieve slitting during die assembly, and inserts are arranged in the lower die cavities and used for being matched with the ends of the upper die punches to achieve punching during die assembly. According to the rapid stamping and slitting die for the power battery copper-aluminum flexible connecting piece after welding, multiple parts of a workpiece are slit in the one-time die assembly process, meanwhile, the slit workpiece is stamped in the one-time die assembly process, and then efficient machining is achieved.

Description

Technical Field

[0001] This utility model relates to the field of power battery processing technology, and in particular to a rapid stamping and cutting mold for welding copper-aluminum flexible connectors for power batteries. Background Technology

[0002] Currently, mainstream new energy vehicles typically use batteries as their power source. To minimize battery vibration and fatigue during the vehicle's lifespan, flexible electrical connectors made of multiple layers of copper and aluminum foil are usually used between battery modules.

[0003] In the processing of flexible connectors, the existing process involves cutting one piece at a time, welding one piece, stamping one piece, and then cutting another piece. This process is inefficient and cannot meet the production capacity requirements of customers.

[0004] Figure 1 For workpiece 100, which is welded as a single unit, multiple copper and aluminum foils of a certain width are welded together at both ends to improve welding efficiency. However, existing stamping dies can only stamp single workpieces in actual use, and cannot stamp or cut workpieces that have been welded as a whole in the previous process, thus failing to meet the requirement of processing multiple parts at once during the stamping process. Utility Model Content

[0005] The purpose of this utility model is to provide a rapid stamping and slitting mold for welding copper-aluminum flexible connectors for power batteries, so as to solve the problems mentioned in the background art and realize the simultaneous stamping and slitting of the welded workpiece to meet the requirements of rapid processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rapid stamping and slitting die for welding copper-aluminum flexible connectors for power batteries is used to simultaneously stamp and slit welded workpieces. The die includes an upper die base and a lower die base, wherein:

[0008] The upper die base is provided with an upper template, and the upper template is provided with several upper die punches. The upper die punches are arranged side by side with intervals, and the width of each upper die punch and the spacing between two adjacent upper die punches are the same as the target cutting width of the workpiece.

[0009] The lower mold base is provided with a lower template, and the lower template is provided with lower mold cavities that correspond one-to-one with each upper mold punch. The edge of each lower mold cavity is used to cooperate with the side edge of the corresponding upper mold punch to achieve cutting when the mold is closed. Inserts are provided in the lower mold cavities, and the inserts are used to cooperate with the end of the upper mold punch to achieve stamping when the mold is closed.

[0010] A pressure plate is also provided between the upper and lower mold plates. The upper die punch passes through the pressure plate, which is used to apply pressure to the part of the workpiece located outside the lower mold cavity when the mold is closed, in conjunction with the lower mold plate.

[0011] As an alternative, the pressure plate and the upper mold base are connected by a first elastic reset member, so that the pressure plate floats up and down relative to the upper mold plate. When the mold is closed, the upper mold punch protrudes from the pressure plate; when the mold is opened, the upper mold punch retracts into the pressure plate.

[0012] As an alternative, the lower mold base is provided with a second elastic reset member extending into each lower mold cavity. The second elastic reset member acts on the bottom of the insert, and when the mold is closed, the second elastic reset member is pressed down by the insert to store energy; when the mold is opened, the second elastic reset member lifts the insert to the edge of the lower mold cavity.

[0013] As an optional solution, the lower template is provided with protrusions to limit the workpiece, and the pressure plate is provided with corresponding clearance holes for the protrusions.

[0014] As an alternative, the welding area of ​​the workpiece is provided with a feature hole, and the protrusion is cylindrical to fit the feature hole.

[0015] As an alternative, the upper template is provided with a first guide post that passes through the pressure plate, and the lower template is provided with a first guide sleeve that cooperates with the first guide post.

[0016] As an alternative, a second guide post is erected on the lower mold base, and a second guide sleeve that mates with the second guide post is provided on the upper mold base.

[0017] As an optional solution, an upper pad is provided between the upper mold base and the upper template, and the upper mold base, upper pad, and upper template are sequentially fixed together by bolts.

[0018] As an optional solution, a lower backing plate is provided between the lower mold base and the lower template, and a positioning pin is inserted between the lower mold base, the lower backing plate and the lower template.

[0019] As an alternative, a pad is provided below the lower die base to connect with the punch press, and the pad is fixed to the lower die base by bolts.

[0020] The beneficial effects of this utility model are:

[0021] The rapid stamping and slitting mold for the copper-aluminum flexible connector of the power battery adopts an intermittent split upper die punch and a corresponding lower die cavity to achieve multiple slitting of the workpiece in one mold closing process. At the same time, the upper die punch also cooperates with the insert in the lower die cavity, and the lower die plate cooperates with the pressure plate to stamp the slid workpiece in one mold closing process, thereby achieving efficient processing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a welded integral workpiece according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the rapid stamping and cutting mold for the copper-aluminum flexible connector of the power battery provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram illustrating the stamping and slitting process according to an embodiment of this utility model.

[0025] In the attached image:

[0026] 100. Workpiece; 101. Welding area; 102. Feature hole;

[0027] 1. Upper mold base; 2. Lower mold base; 3. Upper template; 4. Upper mold punch; 5. Lower template; 6. Lower mold cavity; 7. Insert; 8. Pressure plate; 9. First elastic reset component; 10. Second elastic reset component; 11. Protrusion; 12. First guide post; 13. First guide sleeve; 14. Second guide post; 15. Second guide sleeve; 16. Upper pad; 17. Lower pad; 18. Foot; 19. Positioning pin. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0033] This embodiment provides a rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries, used for... Figure 1 The workpiece 100 shown is welded together and simultaneously stamped and cut. The welded part 101 of the workpiece 100 is located at the end of the workpiece 100, and the welded part 101 has a feature hole 102. Of course, it can also be applied to workpieces 100 where the welded part 101 is not at the end. This embodiment takes the processing requirement of processing the workpiece 100 into 7 individual parts as an example, and it is necessary to ensure that the welded part 101 of each individual part is stamped firmly.

[0034] Please see Figure 2 and Figure 3 As shown, the rapid stamping and slitting die for the copper-aluminum flexible connector of the power battery after welding includes an upper die base 1 and a lower die base 2, wherein:

[0035] An upper die base 1 is provided with an upper template 3, and a number of upper die punches 4 are provided on the upper template 3. The upper die punches 4 are arranged side by side with intervals, and the width of each upper die punch 4 and the spacing between two adjacent upper die punches 4 are the same as the target cutting width of the workpiece 100.

[0036] The lower mold base 2 is provided with a lower template 5, and the lower template 5 is provided with lower mold cavities 6 that correspond one-to-one with each upper mold punch 4. The edge of each lower mold cavity 6 is used to cooperate with the side edge of the corresponding upper mold punch 4 to achieve cutting when the mold is closed. The lower mold cavity 6 is provided with an insert 7, which is used to cooperate with the end of the upper mold punch 4 to achieve stamping when the mold is closed.

[0037] A pressure plate 8 is also provided between the upper template 3 and the lower template 5. The upper die punch 4 passes through the pressure plate 8. The pressure plate 8 is used to cooperate with the lower template 5 to apply pressure to the part of the workpiece 100 located outside the lower mold cavity 6 when the mold is closed.

[0038] Therefore, by using an intermittent split upper die punch 4 and a corresponding lower die cavity 6, multiple cuts of the workpiece 100 can be completed in one die closing process. At the same time, the upper die punch 4 also cooperates with the insert 7 in the lower die cavity 6, and the lower die plate 5 cooperates with the pressure plate 8, so as to stamp the cut workpiece 100 in one die closing process, thereby achieving efficient processing.

[0039] Optionally, the pressure plate 8 and the upper mold base 1 are connected by a first elastic reset member 9, so that the pressure plate 8 floats up and down relative to the upper mold plate 3, and when the mold is closed, the upper mold punch 4 passes out from the pressure plate 8; when the mold is opened, the upper mold punch 4 retracts into the pressure plate 8.

[0040] The first elastic reset member 9 here is preferably a spring and guide post structure. In addition to pressing the workpiece 100, the pressure plate 8 also helps to remove the processed workpiece 100 when the mold is opened.

[0041] Optionally, the lower mold base 2 is provided with a second elastic reset member 10 extending into each lower mold cavity 6. The second elastic reset member 10 acts on the bottom of the insert 7, and when the mold is closed, the second elastic reset member 10 is pressed down by the insert 7 to store energy; when the mold is opened, the second elastic reset member 10 lifts the insert 7 to the edge of the lower mold cavity 6.

[0042] The second elastic reset element 10 here is preferably a spring and push rod structure. On the one hand, it buffers the downward pressure and provides the counter-pressure required for stamping; on the other hand, it helps to eject the processed workpiece 100 out of the lower mold cavity 6 when the mold is opened, which facilitates material removal.

[0043] Optionally, the lower template 5 is provided with a protrusion 11 for limiting the workpiece 100, and the pressure plate 8 is provided with a clearance hole corresponding to the protrusion 11. Furthermore, for the feature hole 102 opened on the welding part 101 of the workpiece 100, the protrusion 11 is cylindrical and adapted to the feature hole 102, so as to ensure accurate positioning when the workpiece 100 is placed in the mold and to ensure the cutting and stamping effect.

[0044] Optionally, the upper mold plate 3 is provided with a first guide post 12 that passes through the pressure plate 8, and the lower mold plate 5 is provided with a first guide sleeve 13 that cooperates with the first guide post 12. Through the cooperation of the first guide post 12 and the first guide sleeve 13, the upper die punch 4 is accurately inserted into the lower mold cavity 6, ensuring the accuracy of stamping and cutting.

[0045] Optionally, a second guide post 14 is erected on the lower mold base 2, and a second guide sleeve 15 that mates with the second guide post 14 is provided on the upper mold base 1. The cooperation between the second guide post 14 and the second guide sleeve 15 ensures accurate mold closing between the upper mold base 1 and the lower mold base 2.

[0046] Optionally, an upper backing plate 16 is provided between the upper mold base 1 and the upper template 3, and the upper mold base 1, the upper backing plate 16 and the upper template 3 are sequentially fixed together by bolts. The upper backing plate 16 is used to increase the thickness of the upper mold when the size of the upper mold part is insufficient.

[0047] Optionally, a lower backing plate 17 is provided between the lower mold base 2 and the lower template 5, and a positioning pin 19 passes through the lower mold base 2, the lower backing plate 17 and the lower template 5. The lower backing plate 17 is used to increase the thickness of the upper mold when the size of the lower mold part is insufficient; the positioning pin 19 ensures that the lower template 5, the lower backing plate 17 and the lower mold base 2 are accurately positioned, and achieves rapid alignment.

[0048] Optionally, a pad 18 connected to the punch press is provided below the lower die base 2, and the pad 18 is fixed to the lower die base 2 by bolts.

[0049] Specific processing steps:

[0050] 1) Install the upper die holder 1 and the lower die holder 2 with the punch press and complete the die height adjustment;

[0051] 2) The welded part of the welded workpiece 100 is accurately placed between the lower template 5 and the pressure plate 8 by the protrusion 11 on the lower template 5.

[0052] 3) Press the punch press switch. Under the action of the first guide post 12 cooperating with the first guide sleeve 13 and the second guide post 14 cooperating with the second guide sleeve 15, the upper die holder 1 is driven to press down.

[0053] 4) The pressure plate 8 first contacts the workpiece 100, then the first elastic reset member 9 is compressed, and the upper die punch 4 passes through the pressure plate 8 and begins to contact the workpiece 100.

[0054] 5) The upper die holder 1 descends to complete mold closing, and the spaced split upper die punch 4 cooperates with the lower die cavity 6 to cut the workpiece 100 (mainly its welding part 101) into strips; at the same time, the first elastic reset member 9 and the second elastic reset member 10 are compressed, the upper die punch 4 cooperates with the insert 7, and the pressure plate 8 cooperates with the lower die plate 5 to complete the stamping of the workpiece 100;

[0055] 6) The upper die holder 1 begins to move upward, the upper die punch 4 gradually exits the lower die cavity 6, the insert 7 is reset and rises under the action of the second elastic reset member 10, and pushes the workpiece 100 out of the lower die cavity 6; the pressure plate 8 pushes the workpiece 100 away from the upper die punch 4 under the action of the first elastic reset member 9.

[0056] 7) When the mold is fully opened, the workpiece 100 completes the stamping and cutting action. The stamped and cut workpiece 100 is taken out and placed into the designated work box to complete the entire operation process, waiting for the next process of polishing and cleaning.

[0057] In summary, the rapid stamping and slitting die for the welded copper-aluminum flexible connector of the power battery has the following advantages:

[0058] ① Improved processing efficiency, effectively addressing the issues of short R&D cycles and frequent demands for power batteries;

[0059] ② The original mold handle installation method is eliminated to prevent the upper mold from rotating due to stamping vibration during the stamping process, which would affect the mold's accuracy and service life. The mold can be installed and scheduled quickly.

[0060] ③ The upper die punch 4 is a split type with intervals, and the lower die plate 5 has a corresponding structure. The interval upper die punch 4 moves downward to avoid the problem of insufficient strength when multiple punches are stamped together.

[0061] ④ Through the action of the first elastic reset member 9 and the second elastic reset member 10, the workpiece 100 can be quickly stripped when the stamping is completed, and the mold can be reset, so that the cut workpiece 100 can be taken out and the next workpiece 100 can be processed.

[0062] ⑤ Linking this mold with the previous blanking and welding processes can significantly improve the processing efficiency of the overall soft connector and improve the original processing technology.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries, used to simultaneously stamp and slit welded workpieces (100), characterized in that... The rapid stamping and slitting die for the welded copper-aluminum flexible connector of the power battery includes an upper die base (1) and a lower die base (2), wherein: The upper mold base (1) is provided with an upper template (3), and the upper template (3) is provided with a plurality of upper mold punches (4). The upper mold punches (4) are arranged side by side with intervals, and the width dimension of each upper mold punch (4) and the spacing value between two adjacent upper mold punches (4) are the same as the target cutting width dimension of the workpiece (100). The lower mold base (2) is provided with a lower template (5), and the lower template (5) is provided with lower mold cavities (6) that correspond one-to-one with each of the upper mold punches (4). The edge of each lower mold cavity (6) is used to cooperate with the side edge of the corresponding upper mold punch (4) to achieve cutting when the mold is closed. An insert (7) is provided in the lower mold cavity (6), and the insert (7) is used to cooperate with the end of the upper mold punch (4) to achieve stamping when the mold is closed. A pressure plate (8) is also provided between the upper template (3) and the lower template (5). The upper die punch (4) passes through the pressure plate (8). The pressure plate (8) is used to cooperate with the lower template (5) to apply pressure to the part of the workpiece (100) located outside the lower mold cavity (6) when the mold is closed.

2. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, The pressure plate (8) is connected to the upper mold base (1) by a first elastic reset member (9), so that the pressure plate (8) floats up and down relative to the upper mold plate (3), and when the mold is closed, the upper mold punch (4) passes out from the pressure plate (8); when the mold is opened, the upper mold punch (4) retracts into the pressure plate (8).

3. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, The lower mold base (2) is provided with a second elastic reset member (10) extending into each of the lower mold cavities (6). The second elastic reset member (10) acts on the bottom of the insert (7). When the mold is closed, the second elastic reset member (10) is pressed down by the insert (7) to store energy. When the mold is opened, the second elastic reset member (10) lifts the insert (7) to the edge of the lower mold cavity (6).

4. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, The lower template (5) is provided with a protrusion (11) for limiting the workpiece (100), and the pressure plate (8) is provided with a clearance hole corresponding to the protrusion (11).

5. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 4, characterized in that, The workpiece (100) has a feature hole (102) on the welding part (101), and the protrusion (11) is cylindrical and adapted to the feature hole (102).

6. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, The upper template (3) is provided with a first guide post (12) that passes through the pressure plate (8), and the lower template (5) is provided with a first guide sleeve (13) that cooperates with the first guide post (12).

7. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, A second guide post (14) is erected on the lower mold base (2), and a second guide sleeve (15) that cooperates with the second guide post (14) is provided on the upper mold base (1).

8. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, An upper pad (16) is provided between the upper mold base (1) and the upper template (3), and the upper mold base (1), the upper pad (16) and the upper template (3) are sequentially fixed together by bolts.

9. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, A lower pad (17) is provided between the lower mold base (2) and the lower template (5), and a positioning pin (19) is provided between the lower mold base (2), the lower pad (17) and the lower template (5).

10. The rapid stamping and slitting die for welding copper-aluminum flexible connectors in power batteries according to claim 1, characterized in that, The lower die base (2) is provided with a pad (18) for connection with the punch press, and the pad (18) is fixed to the lower die base (2) by bolts.

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