Device for treating gas in battery before girdling and sealing

Abstract

The utility model relates to the technical field of battery production equipment, in particular to a device for treating gas inside a battery before girdling and sealing. Comprising a material clamping piece, a first air connector, an air pipe and a vacuum generator, the material clamping piece is provided with a containing cavity and a side penetrating hole, the containing cavity is communicated with the side penetrating hole, and the side penetrating hole is formed along the side wall of the material clamping piece and penetrates through a side arm; the first air connector is communicated with the side penetrating hole, and the vacuum generator is communicated with the first air connector through the air pipe. The vacuum generator comprises an air suction piece and an air supply piece, and the air suction piece and the air supply piece are communicated with an air pipe. The vacuum generator is provided with the air suction piece and the air supply piece, the side penetrating hole, the first air connector and the air pipe are communicated to form the air channel, after an external workpiece is fixed through the material clamping piece, the purpose of vacuumizing the external workpiece and then injecting air is achieved, the influence of residual air in the workpiece on the service life of a battery is reduced, and the production requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a device for processing internal gas of a battery before waist-bundling and sealing. Background Art

[0002] During the battery processing, a rubber plug needs to be inserted into a shell (the shell is a structure equipped with a core package) to form a battery semi-finished product. Then, the battery semi-finished product is subjected to waist-bundling and sealing to meet the requirements of battery assembly processing. Before waist-bundling and sealing, the shell needs to be evacuated to reduce the impact of the gas in the shell on the battery life. However, the traditional internal gas processing device before waist-bundling and sealing has the following disadvantages: low efficiency, and there is still some residual gas in the shell, which cannot meet the production and processing requirements and needs to be improved. Summary of the Invention

[0003] In order to overcome the disadvantages of low production efficiency and residual gas in the shell affecting the battery service life in the prior art, the purpose of the utility model is to provide a device for processing internal gas of a battery before waist-bundling and sealing, which can improve the production efficiency and reduce the impact of residual gas on the battery.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A device for processing internal gas of a battery before waist-bundling and sealing includes a clamping member, a first gas joint, an air pipe and a vacuum generator. The clamping member is provided with a receiving cavity and a side perforation. The receiving cavity is communicated with the side perforation. The side perforation is arranged along the side wall of the clamping member and penetrates the side arm.

[0006] The first gas joint is communicated with the side perforation, and the air pipe connects the vacuum generator with the first gas joint.

[0007] The vacuum generator includes a suction member and a gas supply member. The suction member and the gas supply member are respectively communicated with the air pipe.

[0008] Further, the vacuum generator further includes a second gas joint. The suction member is communicated with the second gas joint, and the gas supply member is communicated with the second gas joint.

[0009] Further, the clamping member includes a left clamp, a right clamp and a clamp body driving member. The clamp body driving member drives the left clamp and the right clamp to open and close.

[0010] Further, the left clamp is provided with a left groove and a left top plate, and the right clamp is provided with a right groove and a right top plate. The left groove, the left top plate, the right top plate and the right groove enclose a receiving cavity which is communicated with the side perforation. The side perforation is arranged along the side wall of the clamping member, and the left top plate abuts against the right top plate.

[0011] Further, the clamping body driving member includes a wedge-shaped rod and a lifting driving source, and the lifting driving source drives the wedge-shaped rod to lift and lower;

[0012] The clamping member further includes a left swing member, a left groove body, a right swing member and a right convex portion. The left swing member is fixedly connected to the left clamp, the left groove body is arranged on the left clamp, the right swing member is fixedly connected to the right clamp, the right convex portion is arranged on the right clamp, the left groove body is rotatably connected to the right convex portion, and the wedge-shaped rod is located between the left swing member and the right swing member and pushes the left swing member and the right swing member to rotate.

[0013] Further, the clamping member further includes a left limiting member and a right limiting member. The left limiting member is arranged on the left clamp, the right limiting member is arranged on the right clamp, and the distance between the left limiting member and the right limiting member allows the wedge-shaped rod to pass through.

[0014] Further, the left limiting member is rotatably connected to the left clamp, and the right limiting member is rotatably connected to the right clamp.

[0015] The beneficial effects of the present utility model are as follows: By providing a suction member and a gas supply member in the vacuum generator, a gas channel is formed through the side perforation, the first gas joint and the air pipe. After the clamping member fixes the external workpiece, the purpose of first evacuating the external workpiece and then injecting gas is achieved, reducing the influence of residual gas in the workpiece on the battery life and meeting the production requirements. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a first perspective structural schematic diagram of the clamping member of the present utility model;

[0018] Figure 3 is a second perspective structural schematic diagram of the clamping member of the present utility model;

[0019] Figure 4 is a disassembled structural schematic diagram of the clamping member of the present utility model;

[0020] Figure 5 is a working state structural schematic diagram of the present utility model.

[0021] The reference numerals include:

[0022] 1 - clamping member, 101 - accommodating cavity, 102 - side perforation

[0023] 103 - left top plate, 104 - right top plate, 11 - left clamp

[0024] 12 - right clamp, 13 - clamping body driving member, 131 - wedge-shaped rod

[0025] 14 - left swing member, 15 - left groove body, 16 - right swing member

[0026] 17 - Right convex part 18 - Left limit piece 19 - Right limit piece

[0027] 2 - First gas connector 3 - Air pipe 4 - Vacuum generator

[0028] 41 - Suction part 42 - Gas supply part 43 - Second gas connector

[0029] 100 - Workpiece. Specific implementation mode

[0030] For the convenience of understanding by those skilled in the art, the following further describes the present utility model in conjunction with embodiments and drawings. The content mentioned in the implementation mode does not limit the present utility model.

[0031] Please refer to Figures 1 to 5 , a device for processing internal gas of a battery before waist - shrinking and sealing of the present utility model includes a clamping part 1, a first gas connector 2, an air pipe 3 and a vacuum generator 4. The clamping part 1 is provided with a receiving cavity 101 and a side perforation 102. The receiving cavity 101 is communicated with the side perforation 102. The side perforation 102 is arranged along the side wall of the clamping part 1 and penetrates the side arm;

[0032] The first gas connector 2 is communicated with the side perforation 102, and the air pipe 3 connects the vacuum generator 4 and the first gas connector 2;

[0033] The vacuum generator 4 includes a suction part 41 and a gas supply part 42. The suction part 41 and the gas supply part 42 are respectively communicated with the air pipe 3.

[0034] Specifically, in this embodiment, the external workpiece 100 is a battery semi - finished product before waist - shrinking and sealing. The workpiece 100 is clamped by an external loading seat and transported to different processing stations. When the workpiece is conveyed to the station of the device for processing internal gas of a battery before waist - shrinking and sealing, the clamping part 1 clamps the shell of the external workpiece 100. The suction part 41 of the vacuum generator 4 is started to evacuate the inside of the workpiece 100's shell. The gas in the shell passes through the side perforation 102, the first gas connector 2, and the air pipe 3 and enters the suction part 41. Then the suction part 41 stops working, and the gas supply part 42 supplies nitrogen gas into the shell of the workpiece 100. The nitrogen gas enters the shell of the workpiece 100 through the air pipe 3, the first gas connector 2, and the side perforation 102, achieving the purpose of evacuation and nitrogen filling.

[0035] By providing a suction part 41 and a gas supply part 42 in the vacuum generator 4, the side perforation 102, the first gas connector 2 and the air pipe 3 are connected to form a gas channel. After the clamping part 1 fixes the external workpiece 100, the purpose of first evacuating the external workpiece 100 and then injecting gas is achieved, reducing the influence of residual gas in the workpiece 100 on the battery life and meeting the production requirements.

[0036] The vacuum generator 4 further includes a second air joint 43. The suction member 41 is communicated with the second air joint 43, and the air supply member 42 is communicated with the second air joint 43. The arrangement of the second air joint 43 facilitates on-site disassembly, assembly and maintenance.

[0037] The material clamping member 1 includes a left clamp 11, a right clamp 12 and a clamp body driving member 13. The clamp body driving member 13 drives the left clamp 11 and the right clamp 12 to open and close. The left clamp 11 and the right clamp 12 have the same structure and are symmetrically arranged, which is convenient for production and processing. Preferably, the side through hole 102 is arranged as an inclined hole on the left clamp 11.

[0038] The left clamp 11 is provided with a left groove and a left top plate 103, and the right clamp 12 is provided with a right groove and a right top plate 104. The left groove, the left top plate 103, the right top plate 104 and the right groove enclose a containing cavity 101 which is communicated with the side through hole 102. The side through hole 102 is arranged along the side wall of the material clamping member 1. The left top plate 103 abuts against the right top plate 104. Preferably, the side through hole 102 is arranged on the left top plate 103, that is, at the top of the containing cavity 101, which is convenient for sucking vacuum and injecting inert gas such as nitrogen gas at the top of the workpiece 100, improving the production quality and production efficiency. Preferably, the left groove is in a semi-circular arc shape, and the right groove is in a semi-circular arc shape. After the left groove and the right groove are butted, they form a hollow ring body for containing the external workpiece 100. The arrangements of the left top plate 103 and the right top plate 104 ensure the consistency of the depth of each external workpiece 100 entering the containing cavity 101, and further ensure the stability of the production quality.

[0039] The clamp body driving member 13 includes a wedge-shaped rod 131 and a lifting driving source. The lifting driving source drives the wedge-shaped rod 131 to lift and lower;

[0040] The clamping member 1 further includes a left swing member 14, a left groove body 15, a right swing member 16 and a right convex portion 17. The left swing member 14 is fixedly connected to the left clamp 11. The left groove body 15 is provided on the left clamp 11. The right swing member 16 is fixedly connected to the right clamp 12. The right convex portion 17 is provided on the right clamp 12. The left groove body 15 is rotatably connected to the right convex portion 17. The wedge-shaped rod 131 is located between the left swing member 14 and the right swing member 16 and pushes the left swing member 14 and the right swing member 16 to rotate. The lifting drive source (not shown) adopts a cylinder drive structure to realize the lifting of the wedge-shaped rod 131. When the wedge-shaped rod 131 moves downward, the left swing member 14 and the right swing member 16 make rotational movements under the lateral resistance applied by the wedge-shaped rod 131. Preferably, elastic members are installed in the left swing member 14 and the right swing member 16 to generate elastic torsion when the left swing member 14 and the right swing member 16 swing. Synchronously, the left clamp 11 and the right clamp 12 swing, so that the lower ends of the left clamp 11 and the right clamp 12 are separated from each other, and the external workpiece 100 is disengaged from the left clamp 11 and the right clamp 12. When the lifting drive source drives the wedge-shaped rod 131 to move upward, the left swing member 14 and the right swing member 16 are reset respectively, and the left clamp 11 and the right clamp 12 move towards each other to achieve the purpose of clamping the external workpiece 100.

[0041] The clamping member 1 further includes a left limiting member 18 and a right limiting member 19. The left limiting member 18 is provided on the left clamp 11. The right limiting member 19 is provided on the right clamp 12. The distance between the left limiting member 18 and the right limiting member 19 allows the wedge-shaped rod 131 to pass through. The settings of the left limiting member 18 and the right limiting member 19 ensure the stability of the lifting direction of the wedge-shaped rod 13, and thus ensure the stability of the clamping force magnitude after the left clamp 11 and the right clamp 12 clamp the external workpiece 100.

[0042] The left limiting member 18 is rotatably connected to the left clamp 11. The right limiting member 19 is rotatably connected to the right clamp 12. Both the left limiting member 18 and the right limiting member 19 include a shaft rod and a wheel body sleeved on the shaft rod. The shaft rod is fixedly connected to the left clamp 11. The shaft rod is fixedly connected to the right clamp 12. The wheel body is rotatably connected to the shaft rod. The wedge-shaped rod 13 is in line contact with the wheel body, thereby reducing the friction between the wedge-shaped rod 13 during the lifting process and the left limiting member 18 and the right limiting member 19.

[0043] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An internal gas treatment device for a battery before waist sealing, characterized in that: It includes a clamping member (1), a first air joint (2), an air pipe (3) and a vacuum generator (4). The clamping member (1) is provided with a receiving cavity (101) and a side through hole (102). The receiving cavity (101) communicates with the side through hole (102). The side through hole (102) is arranged along the side wall of the clamping member (1) and penetrates the side arm. The first air joint (2) communicates with the side through hole (102), and the air pipe (3) connects the vacuum generator (4) and the first air joint (2). The vacuum generator (4) includes a suction member (41) and a gas supply member (42). The suction member (41) and the gas supply member (42) are respectively connected to the air pipe (3).

2. The internal gas treatment device of the battery before waist tightening and sealing according to claim 1, wherein: The vacuum generator (4) further includes a second air joint (43). The suction member (41) communicates with the second air joint (43), and the gas supply member (42) communicates with the second air joint (43).

3. The internal gas treatment device of the battery before waist tightening and sealing according to claim 1, characterized in that: The clamping member (1) includes a left clamp (11), a right clamp (12) and a clamp body driving member (13). The clamp body driving member (13) drives the left clamp (11) and the right clamp (12) to open and close.

4. The internal gas treatment device of the battery before waist tightening and sealing according to claim 3, characterized in that: The left clamp (11) is provided with a left groove and a left top plate (103). The right clamp (12) is provided with a right groove and a right top plate (104). The left groove, the left top plate (103), the right top plate (104) and the right groove enclose a receiving cavity (101) which communicates with the side through hole (102). The side through hole (102) is arranged along the side wall of the clamping member (1), and the left top plate (103) abuts against the right top plate (104).

5. The internal gas treatment device of the battery before waist tightening and sealing according to claim 3, characterized in that: The clamp body driving member (13) includes a wedge-shaped rod (131) and a lifting driving source. The lifting driving source drives the wedge-shaped rod (131) to lift. The clamping member (1) further includes a left swing member (14), a left groove body (15), a right swing member (16) and a right convex portion (17). The left swing member (14) is fixedly connected to the left clamp (11). The left groove body (15) is arranged on the left clamp (11). The right swing member (16) is fixedly connected to the right clamp (12). The right convex portion (17) is arranged on the right clamp (12). The left groove body (15) is rotatably connected to the right convex portion (17). The wedge-shaped rod (131) is located between the left swing member (14) and the right swing member (16) and pushes the left swing member (14) and the right swing member (16) to rotate.

6. The internal gas treatment device of the battery before waist tightening and sealing according to claim 5, characterized in that: The clamping member (1) further includes a left limiting member (18) and a right limiting member (19). The left limiting member (18) is arranged on the left clamp (11). The right limiting member (19) is arranged on the right clamp (12). The distance between the left limiting member (18) and the right limiting member (19) allows the wedge-shaped rod (131) to pass through.

7. The internal gas treatment device of the battery before waist tightening and sealing according to claim 6, characterized in that: The left limiting member (18) is rotatably connected to the left clamp (11), and the right limiting member (19) is rotatably connected to the right clamp (12).

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