Battery cell shaping device for lithium battery processing

Abstract

The utility model discloses a battery cell shaping device for lithium battery processing, which comprises a bottom plate, a fixed frame is arranged on one side above the bottom plate, a support beam is arranged on one side, far away from the bottom plate, of the fixed frame, a top plate is arranged on one side, close to the bottom plate, of the support beam, and the stroke end of a first hydraulic cylinder is fixedly connected with a first movable plate. Four connecting rods arranged in a matrix mode are inserted into the outer side of the first movable plate, a connecting plate is arranged below the connecting rods for fixed connection, a hot pressing plate is arranged below the connecting plate, the stroke end of the second hydraulic cylinder is fixedly connected with the first limiting plate, and the stroke end of the third hydraulic cylinder is fixedly connected with the second movable plate. And a second limiting plate is arranged on one side of the second movable plate. The shaping device is good in protection effect, the shaping device can be adjusted according to the sizes of the battery cells, shaping of the battery cells of different sizes can be completed, the universality of the shaping device is improved, and meanwhile the production cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, and in particular to a cell shaping device for lithium battery processing. Background Technology

[0002] In battery production, positive and negative electrode sheets and separators are assembled and manufactured into basic battery cells by winding or stacking. Both winding and stacking processes will compress the electrode sheets, causing deformation of the battery cell and affecting its use. Therefore, it is necessary to shape the battery cell by hot pressing. The patent announcement number CN204257767U discloses a battery cell shaping fixture, including a bottom, a support part, a pressing part, a top and several clamping plates. The bottom includes a bearing platform. The support part consists of several vertically arranged support feet. The pressing part is movable along the support feet and is installed on the support part and located between the bottom and the top. The pressing part includes a first pressing plate, several limiting posts on the first pressing plate, a spring sleeved on each limiting post and a second pressing plate installed on the upper end of the limiting post. The top is installed on the top of the support part. The top includes a top plate and a pressure part mounted on the top plate. A clamping plate is detachably located between the pressing part and the bottom and can move vertically. This battery cell shaping fixture can effectively shape battery cells and is highly practical. It can completely solve the problem of deformation of polymer wound cells and the problem of excessive thickness in lithium battery manufacturing. It can effectively prevent battery cell deformation. Battery cells using this battery cell shaping fixture have high hardness, allowing polymer cells to achieve the hardness of aluminum-cased cells. The existing solutions mentioned above have the following problems: such shaping fixtures can only shape battery cells of a single size. When it is necessary to shape cells of different sizes, multiple shaping devices are required for processing, which increases the processing cost of the cells. Therefore, we propose a battery cell shaping device for lithium battery processing. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a cell shaping device for lithium battery processing. This invention solves the problem that shaping fixtures can only shape battery cells of a single size, while multiple shaping devices are needed to process cells of different sizes, thus increasing the processing cost of the cells.

[0004] This utility model discloses a cell shaping device for lithium battery processing, comprising a base plate, a fixed frame on one side of the base plate, a support beam on the side of the fixed frame away from the base plate, a top plate on the side of the support beam near the base plate, a first hydraulic cylinder at the center of the top plate, the stroke end of the first hydraulic cylinder passing through the top plate and fixedly connected to a first movable plate, four matrix-arranged connecting rods inserted into the outer side of the first movable plate, a connecting plate fixedly connected below the connecting rods, a hot press plate below the connecting plate, a second hydraulic cylinder on one side of the fixed frame, the stroke end of the second hydraulic cylinder passing through the fixed frame and fixedly connected to a first limiting plate, a third hydraulic cylinder on the side of the fixed frame near the second hydraulic cylinder, the stroke end of the third hydraulic cylinder passing through the fixed frame and fixedly connected to a second movable plate, and a second limiting plate on the side of the second movable plate away from the third hydraulic cylinder.

[0005] In the above scheme, the hot press plate is provided with an installation groove in the middle of the upper part, the connecting plate is located inside the installation groove, the hot press plate is provided with threaded rods on both sides inside the installation groove, the connecting plate is provided with a through groove that matches the threaded rod, and the threaded rod is provided with a nut above the through groove.

[0006] In the above scheme, the connecting rod is sleeved with a spring between the first movable plate and the connecting plate.

[0007] In the above scheme, the second movable plate is provided with a locking block on the side away from the third hydraulic cylinder, and the second limiting plate is provided with a locking groove that matches the locking block.

[0008] In the above scheme, the top plate is connected to the first guide rods on both sides of the first hydraulic cylinder, and the first guide rods are fixedly connected to the first movable plate below.

[0009] In the above scheme, the fixing frame is equipped with second guide rods on both sides of the second hydraulic cylinder, and the second guide rods are fixedly connected to the first limiting plate.

[0010] In the above scheme, the fixed frame is equipped with third guide rods on both sides of the third hydraulic cylinder, and the third guide rods are fixedly connected to the second movable plate.

[0011] In the above scheme, mounting holes are provided at all four corners of the base plate.

[0012] The advantages and beneficial effects of this utility model are as follows: This utility model provides a cell shaping device for lithium battery processing. Through the cooperation between a nut and a threaded rod, a hot-pressing plate matching the cell is installed. Through the cooperation between a locking block and a locking groove, a second limiting plate matching the cell is installed. A first hydraulic cylinder pushes a first movable plate to move vertically. Through the transmission of a connecting rod, the connecting plate and the hot-pressing plate also move accordingly, thereby completing the shaping of the cell through the hot-pressing plate. During the shaping of the cell by the hot-pressing plate, the spring force can buffer the pressure of the hot-pressing plate on the cell, thus preventing damage to the cell due to excessive pressure. This shaping device has a simple structure, is easy to operate, and has good protective effect. The shaping device can be adjusted according to the size of the cell, and can shape cells of different sizes, improving the versatility of the shaping device while effectively reducing production costs. Attached Figure Description

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of part A of the present invention;

[0016] Figure 3 This is a schematic diagram of part B of the present invention.

[0017] In the diagram: 1. Base plate; 2. Fixing frame; 3. Support beam; 4. Top plate.

[0018] 5. First hydraulic cylinder; 6. First movable plate; 7. Connecting rod; 8. Connecting plate

[0019] 9. Mounting slot; 10. Hot press plate; 11. Second hydraulic cylinder; 12. First limit plate

[0020] 13. Third hydraulic cylinder; 14. Second movable plate; 15. Second limit plate; 16. Clamping block.

[0021] 17. Slot; 18. Spring; 19. Threaded rod; 20. Through groove

[0022] 21. Nut; 22. First guide rod; 23. Second guide rod; 24. Third guide rod

[0023] 25. Mounting holes. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0025] like Figure 1-3 As shown, this utility model is a cell shaping device for lithium battery processing, including a base plate 1. A fixed frame 2 is provided on one side of the upper part of the base plate 1. A support beam 3 is provided on the side of the fixed frame 2 away from the base plate 1. A top plate 4 is provided on the side of the support beam 3 close to the base plate 1. A first hydraulic cylinder 5 is provided in the middle of the upper part of the top plate 4. The stroke end of the first hydraulic cylinder 5 passes through the top plate 4 and is fixedly connected to a first movable plate 6. Four connecting rods 7 arranged in a matrix are inserted into the outer side of the first movable plate 6. The connecting rods 7 are movably connected to the first movable plate 6. A connecting plate 8 is fixedly connected below the connecting rods 7. A hot press plate 10 is provided below the connecting plate 8. When the first hydraulic cylinder 5 is working, the first hydraulic cylinder 5 pushes the first movable plate 6 to move vertically, through the connecting rods The transmission of 7 causes the connecting plate 8 and the hot press plate 10 to move accordingly. A second hydraulic cylinder 11 is provided on one side of the fixed frame 2. The stroke end of the second hydraulic cylinder 11 passes through the fixed frame 2 and is fixedly connected to the first limiting plate 12. When the second hydraulic cylinder 11 is working, it can push the first limiting plate 12 to move horizontally. A third hydraulic cylinder 13 is provided on the side of the fixed frame 2 near the second hydraulic cylinder 11. The stroke end of the third hydraulic cylinder 13 passes through the fixed frame 2 and is fixedly connected to the second movable plate 14. A second limiting plate 15 is provided on the side of the second movable plate 14 away from the third hydraulic cylinder 13. When the third hydraulic cylinder 13 is working, it pushes the second movable plate 14 and the second limiting plate 15 to move horizontally.

[0026] The hot press plate 10 has an installation groove 9 in the middle of its upper part. The connecting plate 8 is located inside the installation groove 9. The hot press plate 10 has threaded rods 19 on both sides inside the installation groove 9. The connecting plate 8 has a through groove 20 that matches the threaded rod 19. The threaded rod 19 has a nut 21 above the through groove 20. The threaded rod 19 is inserted into the through groove 20. Through the cooperation between the nut 21 and the threaded rod 19, the connecting plate 8 and the hot press plate 10 can be stably connected. At the same time, the nut 21 and the threaded rod 19 are easy to install and disassemble, which makes it easier to replace the hot press plate 10 when shaping battery cells of different sizes.

[0027] The connecting rod 7 is fitted with a spring 18 between the first movable plate 6 and the connecting plate 8. The two ends of the spring 18 are fixedly connected to the first movable plate 6 and the connecting plate 8. When the hot press plate 10 shapes the battery, the elastic force of the spring 18 can buffer the pressure of the hot press plate 10 on the battery cell, thereby avoiding the phenomenon of the battery cell being damaged due to excessive pressure.

[0028] The second movable plate 14 is provided with a locking block 16 on the side away from the third hydraulic cylinder 13. The second limiting plate 15 is provided with a locking groove 17 that matches the locking block 16. The locking block 16 is engaged in the groove 17. Through the mutual cooperation between the locking block 16 and the groove 17, the second movable plate 14 and the second limiting plate 15 can be stably connected. At the same time, through the mutual cooperation between the locking block 16 and the groove 17, the second limiting plate 15 is easier to replace when shaping electric models of different sizes.

[0029] The top plate 4 is equipped with first guide rods 22 on both sides of the first hydraulic cylinder 5. The first guide rods 22 are fixedly connected to the first movable plate 6 below. The first guide rods 22 are movably connected to the top plate 4. Through the cooperation between the first guide rods 22 and the top plate 4, the movement stability of the first movable plate 6 is effectively improved.

[0030] The fixed frame 2 is equipped with second guide rods 23 on both sides of the second hydraulic cylinder 11. The second guide rods 23 are fixedly connected to the first limiting plate 12 and movably connected to the fixed frame 2. Through the cooperation between the second guide rods 23 and the fixed frame 2, the movement stability of the first limiting plate 12 is effectively improved.

[0031] The fixed frame 2 is equipped with third guide rods 24 on both sides of the third hydraulic cylinder 13. The third guide rods 24 are fixedly connected to the second movable plate 14, and the third hydraulic cylinder 13 is movably connected to the fixed frame 2. Through the cooperation between the third hydraulic cylinder 13 and the fixed frame 2, the movement stability of the second movable plate 14 is effectively improved.

[0032] The base plate 1 has mounting holes 25 at each of its four corners, through which the shaping device can be fixedly installed.

[0033] Specifically, in this utility model, during the shaping of the battery cell, the hot press plate 10 matching the battery cell is installed through the cooperation between the nut 21 and the threaded rod 19. Simultaneously, the second limiting plate 15 matching the battery cell is installed through the cooperation between the locking block 16 and the locking groove 17. The second hydraulic cylinder 11 pushes the first limiting plate 12 to move horizontally, causing the first limiting plate 12 to move to a position matching the size of the battery cell. The third hydraulic cylinder 13 pushes the second movable plate 14 and the second limiting plate... The plate 15 moves horizontally, causing the second limiting plate 15 to move to a position that matches the size of the battery cell. Then, the first hydraulic cylinder 5 pushes the first movable plate 6 to move vertically. Through the transmission of the connecting rod 7, the connecting plate 8 and the hot pressing plate 10 also move, thereby completing the shaping of the battery cell through the hot pressing plate 10. When the hot pressing plate 10 shapes the battery cell, the elastic force of the spring 18 can buffer the pressure of the hot pressing plate 10 on the battery cell, thereby preventing the battery cell from being damaged due to excessive pressure.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cell shaping device for lithium battery processing, comprising a base plate (1), characterized in that, A fixed frame (2) is provided on one side above the base plate (1). A support beam (3) is provided on the side of the fixed frame (2) away from the base plate (1). A top plate (4) is provided on the side of the support beam (3) close to the base plate (1). A first hydraulic cylinder (5) is provided in the middle of the top plate (4). The stroke end of the first hydraulic cylinder (5) passes through the top plate (4) and is fixedly connected to the first movable plate (6). Four connecting rods (7) arranged in a matrix are inserted into the outside of the first movable plate (6). A connecting plate (8) is provided below the connecting rods (7) for fixed connection. A hot press plate (10) is provided below the connecting plate (8). A second hydraulic cylinder (11) is provided on one side of the fixed frame (2). The stroke end of the second hydraulic cylinder (11) passes through the fixed frame (2) and is fixedly connected to the first limiting plate (12). A third hydraulic cylinder (13) is provided on the side of the fixed frame (2) near the second hydraulic cylinder (11). The stroke end of the third hydraulic cylinder (13) passes through the fixed frame (2) and is fixedly connected to the second movable plate (14). A second limiting plate (15) is provided on the side of the second movable plate (14) away from the third hydraulic cylinder (13).

2. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The hot press plate (10) has an installation groove (9) in the middle of its upper part. The connecting plate (8) is located inside the installation groove (9). The hot press plate (10) has threaded rods (19) on both sides inside the installation groove (9). The connecting plate (8) has a through groove (20) that matches the threaded rod (19). The threaded rod (19) has a nut (21) above the through groove (20).

3. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The connecting rod (7) is located between the first movable plate (6) and the connecting plate (8) and is fitted with a spring (18).

4. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The second movable plate (14) is provided with a locking block (16) on the side away from the third hydraulic cylinder (13), and the second limiting plate (15) is provided with a locking groove (17) that matches the locking block (16).

5. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The top plate (4) is connected to the first guide rod (22) on both sides of the first hydraulic cylinder (5), and the first guide rod (22) is fixedly connected to the first movable plate (6) below.

6. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The fixed frame (2) is located on both sides of the second hydraulic cylinder (11) and a second guide rod (23) is inserted therein. The second guide rod (23) is fixedly connected to the first limiting plate (12).

7. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The fixed frame (2) is located on both sides of the third hydraulic cylinder (13) and a third guide rod (24) is inserted therein. The third guide rod (24) is fixedly connected to the second movable plate (14).

8. The cell shaping device for lithium battery processing according to claim 1, characterized in that, The base plate (1) has mounting holes (25) at all four corners.

Images