Soft package cell welding mark foreign matter cleaning device

Abstract

The utility model relates to the technical field of lithium battery production and processing, in particular to a soft package cell welding mark foreign matter cleaning device which comprises an upper vacuum box and a lower vacuum box, the upper vacuum box and the lower vacuum box are externally connected with a dust collection device, and one side of the upper vacuum box and one side of the lower vacuum box are provided with cell limiting pieces through adjusting assemblies. The adjusting assembly is used for adjusting the distance between the pair of battery cell limiting sheets; wherein the lower vacuum box is parallel to the upper vacuum box, the lower vacuum box and the upper vacuum box are in butt joint to form a receding groove, the position, located in the receding groove, of the top of the lower vacuum box is detachably connected with a tab supporting part, a non-contact dust removal mode is adopted, a directional dust removal slit opening is used for increasing vacuum pumping force, the risk of secondary scratching of a pole piece is completely eradicated, and battery cells are prevented from being knocked; the distance between the battery cell limiting pieces on the two sides is conveniently adjusted, the battery cells of different specifications are limited within a certain range, the dust removal quality is prevented from being affected, and the elastic pieces can fix the battery cell limiting pieces through the limiting pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production and processing, in particular to a device for cleaning foreign matter from welding marks on soft-pack battery cores. Background Art

[0002] Soft-pack lithium batteries are lithium batteries that use flexible materials as their outer shell. Unlike traditional hard-shell lithium batteries (such as steel or aluminum shell batteries), the outer packaging of soft-pack lithium batteries is usually made of multi-layer composite film materials, such as aluminum-plastic composite film.

[0003] During the production process of lithium batteries, some impurities or dust will adhere to the battery cells. In order to ensure the processing quality of lithium batteries, a device for cleaning foreign matter from weld marks on soft-pack battery cells has been proposed. For example, the prior art Chinese patent publication number "CN212821279U" discloses a cleaning device for battery cell processing with good cleaning effect. The device includes a mounting plate and a cleaning box. The mounting plate and the cleaning box are welded together on the side of the housing adjacent to each other. The top housing of the front of the mounting plate is connected to a drive motor via bolts. The output shaft of the drive motor is fixedly connected to a first rotating shaft. The outer ring of the first rotating shaft at the end away from the drive motor is fixedly sleeved with a circular rotating disk. The front housing of the circular rotating disk is eccentrically connected to a connecting rod. The end of the connecting rod away from the circular rotating disk is hinged to a connecting block. The front bottom housing and the back bottom housing of the connecting block are respectively slidably connected to the inner wall of the front top housing and the back top housing of the cleaning box. The bottom housing of the connecting block is fixedly connected to the bottom wall of the cleaning box. The cleaning brush is fixedly connected to the bottom housing of the connecting block. The utility model can achieve the purpose of cleaning by staggering the brush and the battery cells, and at the same time, a certain amount of dust will be shaken off during the movement.

[0004] However, in actual operation, the method of cleaning the battery cell with a cleaning brush is that, while the brush removes adhered foreign matter, it is also easy for the brush to stick to foreign matter and scratch the electrode, resulting in the problem of repeated contamination. In addition, due to space limitations, the dust removal port area of ​​the vacuum box is insufficient and the dust removal capacity is limited, which affects the cleaning effect of the battery cell and reduces its practicality. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcoming of poor cleaning effect of battery cells by brushes in the prior art, and to propose a device for cleaning foreign matter from weld marks on soft-pack battery cells.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for cleaning weld marks on soft-pack battery cells is designed, comprising an upper vacuum box and a lower vacuum box. The upper vacuum box and the lower vacuum box are connected to an external dust collection device, and one side of the upper vacuum box and the lower vacuum box are provided with a battery cell limiting piece through an adjustment component. The adjustment component is used to adjust the distance between the pair of battery cell limiting pieces.

[0008] The lower vacuum box is parallel to the upper vacuum box and butted against each other to form a clearance groove. The top of the lower vacuum box is located in the clearance groove and is detachably connected to a tab support portion.

[0009] Furthermore, dust removal channels are provided in the upper vacuum box and the lower vacuum box, the opposite sides of the dust removal channels are connected, and a dust removal slit is formed by the battery cell limiting piece, and the dust removal slit is used to collect dust in conjunction with a dust collection device.

[0010] Furthermore, the adjustment assembly includes an elastic member, which is fixed to the sides of the upper vacuum box and the lower vacuum box, and is provided with a limiting member at the free end. The battery cell limiting piece is slidably connected to the elastic member through a guide groove.

[0011] Furthermore, wave-shaped protrusions are provided on both sides of the inner wall of the guide groove, the elastic member is in a columnar structure and has a cavity, and it contacts and slides with the battery cell limiting piece through the protrusions;

[0012] Wherein, the battery cell limiting piece is located next to the guide groove and is further provided with a through groove, the through groove is close to the raised portion on one side and forms a deformation groove between the through groove and the raised portion.

[0013] Furthermore, the bottom of the limiting member has a threaded rod, and the limiting member is threadedly connected to the elastic member through the threaded rod, and can also abut against the battery cell limiting piece.

[0014] Furthermore, both sides of the tab support portion are provided with downwardly extending connecting ears, and the lower vacuum box is fixed to the connecting ears via a fixing seat.

[0015] The utility model proposes a device for cleaning foreign matter from weld marks on soft-pack battery cells, which has the following beneficial effects: the utility model utilizes an upper vacuum box and a lower vacuum box to clean the battery cells, adopts a non-contact dust removal method with a directional dust removal slit to increase the vacuum suction force, thereby eliminating the risk of secondary scratching of the electrode pieces, and the upper and lower dust removal channels simultaneously perform vacuum dust removal to avoid damage to the battery cells due to excessive suction on one side; in addition, the elastic parts can conveniently adjust the spacing between the battery cell limit plates on both sides, and limit battery cells of different specifications within a certain range to avoid affecting the dust removal quality; the elastic parts can fix the battery cell limit plates through the limit plates to prevent the battery cell limit plates from slipping during adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the tab support portion of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area A.

[0020] In the figure: 1. Upper vacuum box; 2. Lower vacuum box; 3. Adjustment assembly; 31. Elastic part; 32. Limiting part; 33. Guide groove; 331. Protrusion; 332. Deformation groove; 4. Battery cell limiting piece; 5. Giving groove; 6. Tab support part; 61. Connecting ear; 62. Fixing seat; 7. Dust removal channel; 71. Dust removal slit. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-4 A device for cleaning foreign matter from welding marks on soft-pack battery cells comprises an upper vacuum box 1 and a lower vacuum box 2. The upper vacuum box 1 and the lower vacuum box 2 are connected to an external dust collection device, and one side of the upper vacuum box 1 and the lower vacuum box 2 is provided with a battery cell limiting piece 4 through an adjustment component 3. The adjustment component 3 is used to adjust the distance between a pair of the battery cell limiting pieces 4.

[0023] The lower vacuum box 2 is parallel to the upper vacuum box 1 and is butted against each other to form a clearance groove 5 . The top of the lower vacuum box 2 is detachably connected to a tab support portion 6 located in the clearance groove 5 .

[0024] It is worth mentioning that the dust collection device is a vacuum pump, which is connected to the upper vacuum box 1 and the lower vacuum box 2 through an air duct, wherein the upper and lower vacuum boxes are L-shaped structures, forming the clearance groove 5 when docked;

[0025] In addition, foreign matter is removed at any time and is not collected in the middle.

[0026] Furthermore, a dust removal channel 7 is provided in both the upper vacuum box 1 and the lower vacuum box 2. The opposite sides of the dust removal channels 7 are connected, and a dust removal slit opening 71 is formed by the battery cell limiting plate 4. The dust removal slit opening 71 is used to collect dust in conjunction with a dust collection device.

[0027] Specifically, the upper and lower dust removal slits 71 are directionally arranged to increase the dust removal port area of ​​the vacuum box and increase the vacuum suction force, thereby eliminating the risk of secondary scratching of the electrode sheet in conjunction with the pole ear support portion 6, while also improving the dust removal quality and efficiency.

[0028] Furthermore, the adjustment assembly 3 includes an elastic member 31, which is fixed to the sides of the upper vacuum box 1 and the lower vacuum box 2, and is provided with a limit member 32 at the free end. The battery cell limit plate 4 is slidably connected to the elastic member 31 through a guide groove 33.

[0029] In more detail, the inner walls of the guide groove 33 are provided with wavy protrusions 331 on both sides. The elastic member 31 is a columnar structure with a cavity, and it contacts and slides with the battery cell limiting piece 4 through the protrusions 331.

[0030] The cell limiting piece 4 is further provided with a through groove beside the guide groove 33 . The through groove is close to the protrusion 331 on one side and a deformation groove 332 is formed between the through groove and the protrusion 331 .

[0031] It is worth mentioning that, under the action of the deformation groove 332 , the protrusion 331 contacts the elastic member 31 and deforms to avoid getting stuck. The pause feeling caused by the contact sliding can more accurately adjust the spacing of the battery cell limiter 4.

[0032] In general, the limiting member 32 has a threaded rod at the bottom, and the limiting member 32 is threadedly connected to the elastic member 31 through the threaded rod, and can also contact the battery cell limiting piece 4.

[0033] It should be noted that the top of the battery cell limiting piece 4 has a limiting portion, and the limiting portion is a U-shaped structure, wherein a sealing gasket is provided between the battery cell limiting piece 4 and the upper and lower vacuum boxes. The limiting member 32 is used to press the battery cell limiting piece 4 to prevent slipping during adjustment, and on the other hand to prevent air leakage during dust removal channel 7 suction.

[0034] Finally, both sides of the tab support portion 6 have downwardly extending connecting ears 61, the lower vacuum box 2 and the connecting ears 61 are fixed via a fixing seat 62, and the fixing seat 62 and the lower vacuum box 2 and the connecting ears 61 are fixed via locking bolts.

[0035] Working mode: When working, the battery cell limit piece 4 and the elastic member 31 slide through the guide groove 33, and while sliding, the elastic member 31 contacts and slides with the raised portion 331, and the pause feeling generated by the contact sliding is used to more accurately adjust the spacing of the battery cell limit piece 4;

[0036] Then, the rotating limit piece 32 uses the threaded rod to press against the battery cell limit piece 4 to ensure that the battery cell limit piece 4 will not fall off during adjustment, and also ensure that the dust removal channel 7 will not leak, and then cooperate with the battery cell limit piece 4 and the tab support part 6 to clean the battery cell.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for cleaning foreign matter from welding marks on soft-pack battery cells, comprising an upper vacuum box (1) and a lower vacuum box (2), characterized in that: The upper vacuum box (1) and the lower vacuum box (2) are externally connected to a dust collection device, and one side of each is provided with a cell limiting piece (4) via an adjustment component (3), wherein the adjustment component (3) is used to adjust the distance between a pair of cell limiting pieces (4); The lower vacuum box (2) is parallel to the upper vacuum box (1) and is butted against each other to form a clearance groove (5). The top of the lower vacuum box (2) is located in the clearance groove (5) and is detachably connected to a tab support portion (6).

2. The device for cleaning foreign matter from welding marks on soft-pack battery cells according to claim 1, characterized in that: The upper vacuum box (1) and the lower vacuum box (2) are both provided with dust removal channels (7), the opposite sides of the dust removal channels (7) are connected, and a dust removal slit opening (71) is formed through the battery cell limiting piece (4), and the dust removal slit opening (71) cooperates with a dust collection device for dust collection.

3. The device for cleaning foreign matter from welding marks on soft-pack battery cells according to claim 1, characterized in that: The adjustment assembly (3) includes an elastic member (31), the elastic member (31) is fixed to the side surfaces of the upper vacuum box (1) and the lower vacuum box (2), and is provided with a limiting member (32) at a free end, and the battery cell limiting piece (4) is slidably connected to the elastic member (31) via a guide groove (33).

4. The device for cleaning foreign matter from welding marks on soft-pack battery cells according to claim 3, characterized in that: Wave-shaped protrusions (331) are provided on both sides of the inner wall of the guide groove (33); the elastic member (31) is a columnar structure with a cavity, and contacts and slides with the battery cell limiting piece (4) through the protrusions (331); The cell limiting piece (4) is located next to the guide groove (33) and is further provided with a through groove, the through groove is close to the raised portion (331) on one side, and a deformation groove (332) is formed between the through groove and the raised portion (331).

5. The device for cleaning foreign matter from welding marks on soft-pack battery cells according to claim 4, characterized in that: The bottom of the limiting member (32) has a threaded rod, and the limiting member (32) is threadably connected to the elastic member (31) via the threaded rod, and can also abut against the battery cell limiting piece (4).

6. The device for cleaning foreign matter from welding marks on soft-pack battery cells according to claim 1, characterized in that: Both sides of the tab support portion (6) are provided with downwardly extending connection tabs (61), and the lower vacuum box (2) and the connection tabs (61) are fixed via a fixing seat (62).

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