New energy battery cover plate riveting die

Abstract

The utility model discloses a new energy battery cover plate riveting die, including upper mounting panel and lower mounting panel, the lower mounting panel top is provided with the lower form plate, and the lower form plate top is provided with the carrier, and the carrier top is provided with the recess, is used for placing the cover plate body of corresponding shape specification, the upper mounting panel bottom is provided with the upper backing pad, and the upper backing pad bottom is provided with the upper clamping plate, and the both ends of upper clamping plate are slidably connected with the stop plate through the equal -height sleeve assembly component. The utility model discloses riveting process connection fixed cover plate body, pole, sealing element, metal fixed block, plastic fixed part, lower plastic support, guaranteeing the structure reliability, simplifying new energy battery cover plate assembly process flow, reducing assembly process difficulty, reducing the amount of use of key material, help to improve the assembly efficiency of top cap and reduce production cost, improve new energy battery energy density and safety, compared with general riveting technology, riveting precision is higher, and product yield is higher.

Description

Technical Field

[0001] This utility model relates to the field of power battery cover production technology, and in particular to a riveting mold for a new energy battery cover. Background Technology

[0002] In recent years, driven by the concept of "green and sustainable development," the new energy vehicle market has continued to expand rapidly, leading to a surge in the new energy battery market. Currently, new energy batteries generally adopt a square aluminum shell structure, consisting of a shell and a battery cover. The battery cover provides a sealed space for the battery and also serves as the energy transfer medium; its structure directly affects the reliability and manufacturing cost of the battery pack. Based on these issues, it is necessary to design a reliable, simple, and low-cost new energy battery cover to improve the energy density of new energy batteries and reduce manufacturing costs.

[0003] Currently, the traditional cover plate structure commonly used in new energy batteries employs copper-aluminum friction welding technology for the terminals, relying on in-mold injection molding of PPS material to fix the cover plate and terminals. This poses risks of breakage at the copper-aluminum joint surface of the terminals and the risk of the terminals detaching from the cover plate, reducing the safety of new energy batteries during use. Utility Model Content

[0004] To address the issues of fracture at the copper-aluminum joint surface of the electrode post and the risk of the electrode post detaching from the cover plate in the traditional cover plate structure, which reduces the safety of new energy batteries during use, this utility model provides a new energy battery cover plate riveting mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A riveting mold for a new energy battery cover includes an upper mounting plate and a lower mounting plate. The lower mounting plate has a lower template at its top, and a carrier at its top. The carrier has a groove at its top for placing a cover body of a corresponding shape and specification. The upper mounting plate has an upper pad at its bottom, and an upper clamping plate at its bottom. Stop plates are slidably connected to both ends of the upper clamping plate via equal-height sleeve assemblies, and a third spring is provided between the stop plates and the upper mounting plate. A stripper plate is provided at the bottom of the stop plates for removing the riveted cover body. External limiters are provided at both ends of the bottom of the upper mounting plate to limit the downward pressure stroke in conjunction with the lower mounting plate. The upper clamping plate is provided with two rivets that penetrate the stop plate and the stripper plate, which are used to squeeze and rivet the cover plate body; the stripper plate is provided with a stripper insert at the point where the rivets penetrate, and its bottom shape fits the surface shape of the cover plate body, which is used to position the cover plate body at the riveting point in the height direction. Both ends of the upper pad and the upper clamping plate are provided with a first insert knife. Both ends of the bottom of the stripper plate are slidably provided with a first slider, and a first spring is provided between the first slider and its track to drive the first slider to reset. A slider insert with a slope is provided in the recess at the top of the first slider, which forms a wedge-shaped fit with the slope at the bottom of the first insert knife to drive the first slider to move. The bottom of the first slider is a stepped surface with an upward inward depression, which is used to cooperate with the upper surface of the lower template to play a buffering role. The stripper plate has two stripper inserts on both sides symmetrically arranged with second sliders. A second spring is arranged between the second slider and its track to drive the second slider to reset. The upper pad plate is provided with a second insert corresponding to the second slider. The bottom end of the second insert penetrates the upper clamping plate and the stop plate, and its bottom inclined surface and the inclined surface on the second slider form a wedge shape to drive the second slider to move.

[0006] Preferably, both ends of the lower template are provided with lower mold positioning, and both ends of the carrier are provided with positioning holes. The lower mold positioning is inserted into the positioning holes to position the carrier.

[0007] Preferably, the upper mounting plate and the upper pad above the rivet have openings, and a rivet pressure plate provided on the upper mounting plate presses down on the rivet, making it convenient to replace the rivet.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adopts a riveting process to connect and fix the cover plate body, pole, seal, metal fixing block, plastic fixing part, and lower plastic bracket. While ensuring structural reliability, it simplifies the assembly process of the new energy battery cover plate, reduces the difficulty of the assembly process, reduces the amount of key materials used, helps to improve the assembly efficiency of the top cover and reduce production costs, and improves the energy density and safety of new energy batteries. Compared with the common riveting technology, the riveting precision is higher and the product yield is higher. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model; Figure 2 Figure 1 Schematic diagram of the cross-sectional structure of the middle AZ-AZ; Figure 3 Figure 1 A schematic diagram of the cross-sectional structure of BA-BA; Figure 4 This is a three-dimensional structural diagram of the template, carrier, and cover plate body in an embodiment of this utility model; Figure 5 This is an initial state diagram of the cover plate body to be riveted in an embodiment of the present invention. Figure 6This is a diagram showing the state of the first slider contacting the upper plane of the lower template after the upper mold is initially pressed down in an embodiment of this utility model. Figure 7 This is a diagram showing the state where the contact area between the first slider and the upper plane of the lower template decreases after the upper mold is pressed down again in this embodiment of the present invention. Figure 8 for Figure 7 Enlarged schematic diagram of the rivet pin area; Figure 9 This is a diagram showing the state where the bottom step surface of the first slider contacts the upper plane of the lower template after the upper mold continues to press down in an embodiment of this utility model. Figure 10 This is a diagram showing the riveting process completed after the upper mold is pressed down in the final embodiment of this utility model.

[0010] In the diagram: 1. Upper mounting plate, 2. Upper pad plate, 3. Upper clamping plate, 4. Stop plate, 5. Stripper plate, 6. First slider, 601. Step surface, 7. Lower template, 701. Upper plane, 8. Lower mounting plate, 9. Lower template insert, 10. Lower mold positioning, 11. Rivet pin pressure plate, 12. Carrier, 1201. Groove, 1202. Positioning hole, 13. Cover plate body, 15. Outer limit, 16. First spring, 17. Slider insert, 18. First insert, 19. Equal height sleeve assembly, 21. Second insert, 22. Second slider, 23. Second spring, 24. Stripper insert, 25. Rivet pin, 26. Third spring. Detailed Implementation

[0011] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0013] like Figures 1 to 4As shown, this utility model embodiment includes an upper mounting plate 1 and a lower mounting plate 8. The lower mounting plate 8 has a lower template 7 on its top, a carrier 12 on its top, and a groove 1201 on its top for placing a cover plate body 13 of the corresponding shape and specifications. The upper mounting plate 1 has an upper pad 2 at its bottom, and an upper clamping plate 3 at its bottom. The two ends of the upper clamping plate 3 are slidably connected to stop plates 4 through equal height sleeve assemblies 19, and a third spring 26 is provided between the stop plates 4 and the upper mounting plate 1. The bottom of the stop plates 4 has a stripper plate 5 for removing the riveted cover plate body 13. Both ends of the bottom of the upper mounting plate 1 are provided with outer limiters 15 for cooperating with the lower mounting plate 8 to limit the downward pressure stroke. The upper clamping plate 3 is provided with two rivets 25 that penetrate the stop plate 4 and the stripper plate 5, which are used to squeeze and rivet the cover plate body 13; the stripper plate 5 is provided with a stripper insert 24 at the point through which the rivets 25 penetrate, and its bottom shape fits the surface shape of the cover plate body 13, which is used to position the cover plate body 13 in the height direction at the rivet joint. Both ends of the upper pad plate 2 and the upper clamping plate 3 are provided with first insert blades 18. Both ends of the bottom of the stripper plate 5 are slidably provided with first sliders 6, and a first spring 16 is provided between the first slider 6 and its track to drive the first slider 6 to reset. A slider insert 17 with a slope is provided in the recess at the top of the first slider 6, which forms a wedge-shaped fit with the slope at the bottom of the first insert blade 18 to drive the first slider 6 to move. The bottom of the first slider 6 is a stepped surface 601 with the inner side recessed upward, which is used to cooperate with the upper plane 701 of the lower template 7 to play a buffering role. On both sides of the two ejector pins 24 on the ejector plate 5, there are symmetrical second sliders 22. A second spring 23 is provided between the second slider 22 and its track to drive the second slider 22 to reset. A second insert 21 corresponding to the second slider 22 is provided on the upper pad plate 2. The bottom end of the second insert 21 passes through the upper clamping plate 3 and the stop plate 4, and its bottom inclined surface and the inclined surface on the second slider 22 form a wedge shape to drive the second slider 22 to move.

[0014] When it is necessary to rivet the cover plate body 13, first fix the carrier 12 to the lower template 7, then place the cover plate body 13 to be riveted into the carrier 12, and then press the equipment switch, and the upper mold presses down as... Figure 5 As shown, the distance between the upper clamping plate 3 and the stop plate 4 is 8mm at this time; Press the upper mold down to Figure 6 When the position is shown, the step surface 601 of the first slider 6 and the upper plane 701 of the lower template 7 are in contact and overlap. The first slider 6 prevents the stripper plate 5, the stop plate 4 and the second slider 22 from continuing to move downward. At this time, the distance between the upper clamping plate 3 and the stop plate 4 is 8mm, the distance between the second slider 22 and the cover plate body 13 is 2.5mm, and there is a gap of 0.3mm between the stripper insert 24 and the cover plate body 13. Next, the upper pad 2 continues to push the second insert 21 and the rivet 25 downwards; while the inclined surfaces of the second insert 21 and the second slider 22 contact and overlap, as the second insert 21 continues to move downwards, it pushes the second slider 22 to move horizontally toward the rivet 25; at the same time, the first insert 18 pushes the first slider 6 outwards through the pusher insert 17, as... Figure 7 As shown, for example, when the distance between the upper clamping plate 3 and the stop plate 4 becomes 5.5mm, the distance between the second slider 22 and the cover plate body 13 is 1.15mm. At this time, the contact width between the step surface 601 of the first slider 6 and the upper plane 701 of the lower template 7 changes from 4.29mm to 1.29mm. At this time, the gap between the ejector pin 24 and the cover plate body 13 is still 0.3mm. Figure 8 As shown, the cover plate body 13 is not crushed, thus effectively avoiding the damage and scratches caused by the mold to the cover plate body 13. The upper mold continues to press down until Figure 9 At this position, the distance between the upper clamping plate 3 and the stop plate 4 is 3mm, and the distance between the outer limit 15 and the lower mounting plate 8 is 3mm; the first insert 18 pushes the first slider 6 outward through the pusher insert 17, at this time the step surface 601 of the first slider 6 and the upper plane 701 of the lower template 7 are no longer in contact, and the bottom concave surface of the first slider 6 contacts the upper plane 701; at this time the distance between the second slider 22 and the cover plate body 13 is 0mm, and the second slider 22 has completed the precise horizontal positioning of the cover plate body 13; at this time the gap between the ejector insert 24 and the cover plate body 13 is 0mm, and the ejector insert 24 has completed the precise vertical positioning of the cover plate body 13; The upper mold continues to press down until Figure 10 Position: At this point, the upper mold is no longer pressing down; it has been pressed into place. The rivet pin 25 completes the riveting of the cover plate body 13. The upper mold rises upwards according to the equipment control, and the riveted cover plate body 13 is removed. Figures 5 to 10 The same process can be continued for the riveting production of the cover plate body 13.

[0015] Preferably, both ends of the lower template 7 are provided with lower mold positioning 10, and both ends of the carrier 12 are provided with positioning holes 1202. The lower mold positioning 10 is inserted into the positioning holes 1202 to position the carrier.

[0016] Preferably, the upper mounting plate 1 and the upper pad 2 above the rivet 25 have openings, and the rivet pressure plate 11 provided on the upper mounting plate 1 presses down the rivet, making it convenient to replace the rivet 25.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A riveting mold for a new energy battery cover, characterized in that: The device includes an upper mounting plate and a lower mounting plate. The lower mounting plate has a lower template at its top, and a carrier at its top. The carrier has a groove at its top for placing a cover plate body of a corresponding shape and specification. The upper mounting plate has an upper pad at its bottom, and an upper clamping plate at its bottom. Both ends of the upper clamping plate are slidably connected to stop plates via equal-height sleeve assemblies, and a third spring is provided between the stop plates and the upper mounting plate. A stripper plate is provided at the bottom of the stop plates for removing the riveted cover plate body. Both ends of the bottom of the upper mounting plate are provided with external limiters to limit the downward pressure stroke in conjunction with the lower mounting plate. The upper clamping plate is provided with two rivets that penetrate the stop plate and the stripper plate, which are used to squeeze and rivet the cover plate body; the stripper plate is provided with a stripper insert at the point where the rivets penetrate, and its bottom shape fits the surface shape of the cover plate body, which is used to position the cover plate body at the riveting point in the height direction. Both ends of the upper pad and the upper clamping plate are provided with a first insert knife. Both ends of the bottom of the stripper plate are slidably provided with a first slider, and a first spring is provided between the first slider and its track to drive the first slider to reset. A slider insert with a slope is provided in the recess at the top of the first slider, which forms a wedge-shaped fit with the slope at the bottom of the first insert knife to drive the first slider to move. The bottom of the first slider is a stepped surface with an upward inward depression, which is used to cooperate with the upper surface of the lower template to play a buffering role. The stripper plate has two stripper inserts on both sides symmetrically arranged with second sliders. A second spring is arranged between the second slider and its track to drive the second slider to reset. The upper pad plate is provided with a second insert corresponding to the second slider. The bottom end of the second insert penetrates the upper clamping plate and the stop plate, and its bottom inclined surface and the inclined surface on the second slider form a wedge shape to drive the second slider to move.

2. The riveting mold for a new energy battery cover plate according to claim 1, characterized in that: Both ends of the lower template are provided with lower mold positioning, and both ends of the carrier are provided with positioning holes. The lower mold positioning is inserted into the positioning holes to position the carrier.

3. The riveting mold for a new energy battery cover plate according to claim 1, characterized in that: The upper mounting plate and upper pad above the rivet have openings, and the rivet pressure plate on the upper mounting plate presses down on the rivet, making it easy to replace the rivet.

Images