Battery cover plate tab bending die
By designing a bending mold for lithium battery cover ears, the problem of inaccurate falloff and bending of the cover ears and covers in the prior art is solved, and efficient and precise bending of the ears is achieved, and the improvement of the improvement of the Lithium-ion battery production efficiency.
Patent Information
- Application Number
- CN202420159763.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-01-23
AI Technical Summary
During the bending process of the existing lithium battery cover plate, the electrode between the electrode and the cover plate is prone to fall off, and the bending position is inaccurate, resulting in no welding problems. The existing processing methods have the defect of poor bending effect.
Design a battery cover plate ear bending mold, including a mounting base, a bending drive member, a rotating mechanism, an upper mold and a lower mold, the lower mold is opposite to the upper mold by rotating drive member, and the bending drive member is activated to make the upper mold Combine with the lower mold to achieve accurate bending of the extreme ear.
Through the design of the mold, the efficient and precise bending of the extreme ear is achieved, instead of manual bending, the efficiency of lithium-ion battery production is improved, and the problem of poor bending effect in the existing processing methods is solved.
Smart Images
Figure CN222511244U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production equipment, in particular to a battery cover plate pole ear bending die. Background Art
[0002] With the progress of economic globalization and the continuous increase in energy demand, the search for new energy storage devices has become a hot topic in the field of new energy. Lithium batteries are currently the battery system with the best comprehensive performance, with high specific energy, high cycle life, small size, light weight, no memory effect, no pollution, etc., and have rapidly developed into a new generation of energy storage power.
[0003] At present, the shell and cover of lithium batteries are made separately, and then after the battery cells are installed, assembly and injection operations are carried out to finally form a complete lithium battery. Common lithium battery covers mainly include a cover body, a positive pole and a negative pole. The cover body is provided with a groove for installing the positive pole and the negative pole, and the slot is provided with a pole ear connected to the cover body. In the process of making the cover, the pole ear needs to be bent inward and then the positive pole and the negative pole are riveted and fixed to the cover body. In order to ensure that the pole ear is bent in place, it is necessary to first rivet once to bend the pole ear to a certain angle, then apply oil, and finally rivet once again.
[0004] Traditionally, in order to install the battery cell with welded pole ears and cover plates into the aluminum shell, the pole ears are manually folded. Manual folding of the pole ears has the following problems: because the force on the pole ears is uncontrollable, it is easy to cause the pole ears and the cover plates to fall off. At the same time, because the position of the folded pole ears cannot be accurately controlled each time, the two poles and the cover plate body cannot be completely aligned, resulting in the problem of welding. Therefore, the existing processing method has the defect of poor bending effect, and thus cannot meet the user's usage needs. Utility Model Content
[0005] The utility model aims to provide a battery cover plate tab bending die, which has a simple structure and is easy to operate, and can greatly improve the efficiency of lithium ion battery production.
[0006] A battery cover plate tab bending mold, comprising a mounting seat, a bending drive member, a rotating mechanism, an upper mold, and a lower mold, the mounting seat comprising a top plate and a bottom plate, the bending drive member is arranged on the top plate, the output end of the bending drive member is connected to a lower pressure plate, the upper mold is connected to the lower pressure plate, the bending drive member drives the lower pressure plate to drive the upper mold to move vertically up and down, the rotating mechanism comprises a rotating drive member and a rotating plate, the rotating drive member is arranged on the bottom plate, the rotating plate is connected to the rotating drive member, the lower mold is symmetrically arranged at both ends of the rotating plate, and the rotating drive member can drive the rotating plate to rotate so that one of the lower molds is opposite to the upper mold.
[0007] In the above technical solution, by placing the lower mold on the rotating plate, and then placing the battery cover plate tab to be bent on the lower mold, starting the rotating drive to rotate the rotating plate, so that the lower mold is opposite to the upper mold, starting the bending drive, so that the output end of the bending drive drives the lower pressure plate to move downward, so that the upper mold and the lower mold are aligned, thereby bending the tab. The overall structure is simple and easy to operate. The operator only needs to place the tab to be bent on the lower mold, which can greatly improve the efficiency of lithium-ion battery production.
[0008] Furthermore, the top plate is provided with a guide column, and the lower pressing plate is provided with a guide sleeve, and the guide column is connected to the lower pressing plate through the guide sleeve so that the lower pressing plate can move up and down along the guide column.
[0009] In the above technical solution, the guide pin and the guide sleeve can guide the movement trajectory of the lower pressing plate, ensuring that the lower pressing plate moves along a predetermined path, so as to ensure that the upper die and the lower die can be accurately aligned, thereby improving the bending effect.
[0010] Furthermore, the lower mold is provided with a placement groove for placing the battery cover, and the placement groove includes a bending groove for placing the pole ear to be bent on the battery cover, and the bending groove is formed with an inclined surface.
[0011] In the above technical solution, the pole ear to be bent is placed in the bending groove, and when the bending drive member presses the upper mold downward, the pole ear fits against the inclined surface to ensure that the pole ear can be squeezed and deformed.
[0012] Furthermore, the upper die is provided with a clamping block, which is arranged opposite to the bending groove and is aligned with the inclined surface.
[0013] In the above technical solution, when the bending drive member presses the upper die downward, the clamping block clamps the tab so that the clamping block is aligned with the inclined surface, ensuring the tab is bent, so that the bending can be quickly formed with high forming accuracy.
[0014] Furthermore, the pressing block has a boss, the bending groove is provided with a positioning groove, and the boss can extend into the positioning groove.
[0015] In the above technical solution, when the upper die and the lower die are matched, the boss extends into the positioning groove and is clamped with the positioning groove, so that the pressing block is in closer contact with the inclined surface.
[0016] Furthermore, limit blocks are provided on both sides of the bending groove.
[0017] In the above technical solution, the limit blocks arranged on both sides of the bending groove can clamp the pole ear to prevent the pole ear from moving during bending, thereby affecting the bending effect.
[0018] Furthermore, the upper mold is provided with an insert block, and the lower mold is provided with a slot, and the insert block can extend into the slot.
[0019] In the above technical solution, when the bending drive member drives the upper die to mate with the lower die, the insert block extends into the slot, making the connection between the upper die and the lower die tighter and more reliable, further improving the bending effect of the tab.
[0020] Furthermore, a spring is provided on one side of the upper die facing the lower pressing plate.
[0021] In the above technical solution, the upper mold will vibrate due to the action of the bending drive member during the downward pressing process, which will cause certain damage to the upper mold. A spring is arranged between the upper mold and the lower pressure plate to play a buffering role, reduce the damage to the upper mold caused by vibration, and protect the mold.
[0022] Furthermore, a support seat is provided on a side of the bottom plate opposite to the upper mold, and the rotating plate is arranged against the support seat.
[0023] In the above technical solution, when the bending drive member drives the upper mold to mate with the lower mold, a downward force will be generated. At this time, the support seat can support the lower mold to facilitate the downward pressure of the upper mold, so that the upper mold and the lower mold can be tightly connected to improve the bending effect.
[0024] Compared with the prior art, the beneficial effects of the utility model are: by setting a rotating drive member, the rotating plate rotates, so that the lower mold and the upper mold are opposite, and then the bending drive member is started, so that the output end of the bending drive member drives the lower pressure plate to move downward, so that the upper mold and the lower mold are matched, so as to bend the pole ear, replacing the manual bending method, improving its bending effect, and using a limit block to limit the pole ear to avoid the position deviation of the pole ear, further improving its bending effect. By setting the above structure, it has the advantage of better bending effect, solves the problem of poor bending effect in the existing processing method, and can better meet the user's use needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of a battery cover plate tab bending mold according to an embodiment of the utility model.
[0026] Figure 2 It is a schematic diagram of the lower mold structure of the battery cover plate tab bending mold according to an embodiment of the utility model.
[0027] Figure 3 It is a schematic diagram of the bending groove structure of the battery cover plate tab bending mold according to an embodiment of the utility model.
[0028] Figure 4 It is a schematic diagram of the exploded structure of the upper die and the lower die of the battery cover plate tab bending die according to an embodiment of the utility model.
[0029] Figure 5It is a schematic diagram of the structure of the pressing block of the battery cover plate tab bending mold according to an embodiment of the utility model.
[0030] Description of Figure Numbers
[0031] Mounting seat 1, top plate 101, bottom plate 102, bending drive member 2, rotating mechanism 3, rotating drive member 301, rotating plate 302, upper die 4, clamping block 401, boss 4011, insert block 402, spring 403, lower die 5, placement groove 501, bending groove 5011, inclined surface 5011a, positioning groove 5011b, limit block 502, slot 503, lower pressure plate 6, guide sleeve 601, guide column 7, support seat 8. DETAILED DESCRIPTION
[0032] The battery cover plate tab bending die of the utility model will be further described in detail below in conjunction with specific embodiments and drawings. The drawings show a preferred embodiment of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.
[0033] Please refer to Figure 1 In a preferred embodiment, the battery cover plate ear bending mold of the utility model includes a mounting base 1, a bending driving member 2, a rotating mechanism 3, an upper mold 4, and a lower mold 5. The mounting base 1 includes a top plate 101 and a bottom plate 102. The bending driving member 2 is arranged on the top plate 101. The output end of the bending driving member 2 is connected with a lower pressure plate 6. The upper mold 4 is connected to the lower pressure plate 6. The bending driving member 2 drives the lower pressure plate 6 to drive the upper mold 4 to move vertically up and down. The rotating mechanism 3 includes a rotating driving member 301 and a rotating plate 302. The rotating driving member 301 is arranged on the bottom plate 102. The rotating plate 301 is connected to the rotating driving member 301. The bending mechanism 4 includes an upper mold 4 and a lower mold 5. The lower mold 5 is symmetrically arranged at both ends of the rotating plate 302. The rotating driving member 301 can drive the rotating plate 302 to rotate so that one of the lower molds 5 is opposite to the upper mold 4.
[0034] It can be seen from the above technical solution that by placing the lower mold 5 on the rotating plate 302, and then placing the battery cover plate tab to be bent on the lower mold 5, starting the rotating drive 301, so that the rotating plate 302 rotates, so that the lower mold 5 is opposite to the upper mold 4, and starting the bending drive 2, so that the output end of the bending drive 2 drives the lower pressing plate 6 to move downward, so that the upper mold 4 and the lower mold 5 are aligned, so as to bend the tab. The overall structure is simple and easy to operate. The operator only needs to place the tab to be bent on the lower mold, which can greatly improve the lithium ion.
[0035] Please refer to Figure 1The top plate 101 is provided with a guide post 7, and the lower pressing plate 6 is provided with a guide sleeve 601, and the guide post 7 is connected to the lower pressing plate 6 through the guide sleeve 601, so that the lower pressing plate 6 moves up and down along the guide post 7. The guide post and the guide sleeve can guide the movement trajectory of the lower pressing plate, ensuring that the lower pressing plate moves along a predetermined path, so as to ensure that the upper die and the lower die can be accurately matched, thereby improving the bending effect.
[0036] Please refer to Figure 2 and Figure 3 The lower die 5 is provided with a placement groove 501 for placing the battery cover, and the placement groove 501 includes a bending groove 5011 for placing the tab to be bent on the battery cover, and the bending groove 5011 is formed with an inclined surface 5011a. The placement groove 501 is used to place the battery cover to be processed, and the tab of the battery cover to be bent is placed in the bending groove 5011. When the bending drive 2 presses the upper die 4 downward, the upper die 4 and the lower die 5 fit tightly, and the upper die 4 causes the tab to deform and fit with the inclined surface 5011a, ensuring that the tab can be bent.
[0037] Please refer to Figure 4 The upper die 4 is provided with a clamping block 401, which is arranged opposite to the bending groove 5011 and is aligned with the inclined surface 5011a. When the bending drive 2 presses the upper die 4 downward, the upper die 4 is aligned with the lower die 5. At this time, the clamping block 401 presses the tab, so that the clamping block 401 is aligned with the bending groove 5011, ensuring the tab bending, so that the bending can be formed quickly and with high forming accuracy.
[0038] Specifically, the pressing block 401 has a boss 4011, and the bending groove 5011 is provided with a positioning groove 5011b, and the boss 4011 can extend into the positioning groove 5011b. When the upper mold 4 and the lower mold 5 are matched, the boss 4021a extends into the positioning groove 5011b and is clamped with the positioning groove 5011b, and at the same time, a force toward the inclined surface 5011a is generated, so that the pressing block 401 and the inclined surface 5011a are in closer contact.
[0039] It should be noted that the inclination of the inclined surface 5011a can be set according to actual needs. Accordingly, the pressing block 401 should also be aligned with the bending groove 5011 to ensure that the tab can reach the required bending angle.
[0040] Please refer to Figure 2 , limit blocks 502 are provided on both sides of the bending groove 5011. When the pressing block 401 is aligned with the bending groove 5011, the lower mold 5 will vibrate. At this time, the limit blocks 502 provided on both sides of the bending groove 5011 can clamp the tabs to prevent the tabs from moving during bending, thereby affecting the bending effect.
[0041] At the same time, the upper die 4 is provided with an insert block 402, and the lower die is provided with a slot 503, and the insert block 402 can be inserted into the slot 503. When the bending drive 2 drives the upper die 4 to mate with the lower die 5, the insert block 402 enters the slot 503, ensuring that the connection between the upper die 4 and the lower die 5 is tighter and more reliable, further improving the bending effect of the tab.
[0042] In addition, a spring 403 is provided on the side of the upper mold 4 facing the lower pressing plate 6. During the pressing process, the upper mold 4 will vibrate due to the action of the bending drive member 2, which will cause certain damage to the upper mold 4. The spring 403 provided on the upper mold 4 and the lower pressing plate 6 can play a buffering role, reduce the damage to the upper mold 4 caused by vibration, and protect the mold.
[0043] Please refer to Figure 1 In this embodiment, a support seat 8 is provided on the side of the bottom plate 102 opposite to the upper die 4, and the rotating plate 302 is arranged against the support seat 8. When the rotating driving member 301 rotates the lower die 5 arranged on the rotating plate 302 to the side opposite to the upper die 4, the bending driving member 2 drives the upper die 4 to mate with the lower die 5 and generates a downward force. At this time, the support seat 8 can support the lower die 5, so that the bending driving member 2 can better drive the upper die 4 to press downward, so that the upper die 4 and the lower die 5 can be closely connected, thereby improving the bending effect.
[0044] It should be noted that, in the present embodiment, the bending drive member 2 uses an electric cylinder. Compared with the air cylinder used in the traditional scheme, the present invention has higher precision and improves production efficiency; the rotating drive member 301 uses a hollow rotating platform, which can achieve high-precision rotation and 360-degree smooth rotation, which is convenient for the transmission, positioning and transfer between objects. The hollow rotating platform can smoothly and accurately rotate the lower mold 5 to a position relative to the upper mold 4, ensuring the bending effect of the pole ear, and the hollow rotating platform has a compact structure, which makes the structure of the present invention more compact and exquisite, reducing the occupied space.
[0045] The utility model replaces the manual bending method, improves the bending effect of the tab, solves the problem of poor bending effect in the existing processing method, and can better meet the needs of users. And it can be suitable for different types of lithium battery cover plates by replacing the upper mold 4 and the lower mold 5.
[0046] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0049] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A battery cover plate tab bending die, characterized in that: It includes a mounting seat, a bending drive member, a rotating mechanism, an upper mold, and a lower mold, the mounting seat includes a top plate and a bottom plate, the bending drive member is arranged on the top plate, the output end of the bending drive member is connected with a lower pressure plate, the upper mold is connected to the lower pressure plate, the bending drive member drives the lower pressure plate to drive the upper mold to move vertically up and down, the rotating mechanism includes a rotating drive member and a rotating plate, the rotating drive member is arranged on the bottom plate, the rotating plate is connected to the rotating drive member, the lower mold is symmetrically arranged at both ends of the rotating plate, and the rotating drive member can drive the rotating plate to rotate so that one of the lower molds is opposite to the upper mold.
2. The battery cover plate tab bending die according to claim 1, characterized in that: The top plate is provided with a guide column, and the lower pressing plate is provided with a guide sleeve. The guide column is connected to the lower pressing plate through the guide sleeve so that the lower pressing plate can move up and down along the guide column.
3. The battery cover plate tab bending die according to claim 1, characterized in that: The lower mold is provided with a placement groove for placing the battery cover, and the placement groove includes a bending groove for placing the pole ear to be bent on the battery cover, and the bending groove is formed with an inclined surface.
4. The battery cover plate tab bending die according to claim 3, characterized in that: The upper die is provided with a clamping block, which is arranged opposite to the bending groove and is aligned with the inclined surface.
5. The battery cover plate tab bending die according to claim 4, characterized in that: The pressing block has a boss, the bending groove is provided with a positioning groove, and the boss can extend into the positioning groove.
6. The battery cover plate tab bending die according to claim 3, characterized in that: Limit blocks are arranged on both sides of the bending groove.
7. The battery cover plate tab bending die according to claim 1, characterized in that: The upper mold is provided with an insert block, and the lower mold is provided with a slot, and the insert block can extend into the slot.
8. The battery cover plate tab bending die according to claim 1, characterized in that: A spring is arranged on one side of the upper die facing the lower pressing plate.
9. The battery cover plate tab bending die according to claim 1, characterized in that: A support seat is arranged on one side of the bottom plate opposite to the upper mould, and the rotating plate is arranged against the support seat.