A device for acid washing and anti-adhesion of battery cells

Abstract

The utility model discloses an anti-adhesion device for pickling of battery cells, comprising a pickling tank, the side walls of which are slidably mounted with a plurality of movable plates, the side walls of which are detachably mounted with two connecting plates, a bottom plate being fixedly connected between the two connecting plates, and the two bottom plates being arranged below the connecting plates. During the pickling process of the utility model, due to the isolation between the battery plates, the anti-adhesion operation is achieved, and the filter screen can filter most of the impurities picked out by pickling, so that a large amount of impurities will not fall into the pickling tank, which is convenient for subsequent cleaning. When the pickling is completed, the solution is released, and then the connecting plate and the battery cell are taken out, and the battery cell is taken out to complete the pickling, and the connecting plate is arranged in a detachable manner. By disassembling the plurality of connecting plates, the plurality of connecting plates and the filter screen can be easily cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of battery slice pickling, in particular to an anti-adhesion device for battery slice pickling. Background Art

[0002] Cell pickling is a key process in the manufacture of solar cells. Its purpose is to remove stains, oxides and impurities on the surface of the cell by using acidic solutions such as hydrochloric acid and sulfuric acid, thereby increasing the adhesion of the coating and improving the photoelectric conversion efficiency of the cell. The general principle steps of pickling include preparing the pickling solution and keeping it uniform and temperature stable, placing the cell in the pickling tank to react with the pickling solution to dissolve or remove surface contaminants, and finally rinsing and drying to ensure that the surface of the cell is clean and free of residue, laying a good foundation for subsequent processes.

[0003] Patent document CN206697458U discloses a processing device for polycrystalline battery cells, and in particular, relates to a heat exchange pickling tank for polycrystalline battery cells. The main purpose is to solve the technical problems existing in the prior art that the pickling system cannot perform heat exchange, the temperature during pickling is high, and the performance of the battery cells is affected. The utility model comprises a main tank (1), the bottom of the main tank (1) is provided with a spray pipe (2), and a plurality of nozzles (3) are provided on the spray pipe. The main tank is connected to a secondary tank (6) through a liquid extraction pipe (4) and a liquid extraction pump (5). A heat exchange coil (7) is provided outside the liquid extraction pipe, and the heat exchange coil is connected to a cooler (8). The secondary tank is connected to the spray pipe (2) through a reflux pipe (9) and a reflux pump (10). A temperature probe (11) is provided in the main tank. The temperature probe, the liquid extraction pump, the reflux pump, and the cooler are all controlled by a controller (12) through a circuit. The outer surface of the heat exchange coil is provided with irregularly arranged triangular fins (13).

[0004] As in the prior art of the above-mentioned patent, the above-mentioned device is specifically used for pickling battery cells, but in actual operation, adhesion may occur between battery cells. This is mainly due to improper setting of process parameters, such as too long pickling time or too high acid concentration, which leads to excessive corrosion on the surface of the battery cells; at the same time, equipment failure or design defects may also cause adhesion problems, such as the instability of the stirring and heating system leading to uneven distribution of acid, or the lack of a special anti-adhesion mechanism. In addition, the unevenness of the surface of the battery cell or the presence of impurities are also potential causes of adhesion. However, the device did not fully consider these factors when designing, and did not provide solutions or set up corresponding prevention mechanisms for possible battery cell adhesion problems. This situation may have an adverse effect on the quality and production efficiency of the battery cells, and may even increase production costs and scrap rates. Utility Model Content

[0005] The utility model aims to provide a battery cell pickling anti-adhesion device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a battery cell pickling anti-adhesion device, comprising a pickling tank, a plurality of movable plates are slidably installed on the side walls of the pickling tank, two connecting plates are detachably installed on the side walls of the plurality of movable plates, a bottom plate is fixedly connected between the two connecting plates, the two bottom plates are arranged below the connecting plates, filters are arranged inside the two connecting plates, a movable frame is connected between the plurality of movable plates, a movable mechanism for driving the movable frame to move is arranged on both sides of the pickling tank, and a limiting mechanism for limiting the plurality of connecting plates is arranged inside the pickling tank.

[0007] As a further description of the above technical solution: the moving mechanism includes a plurality of support plates, and the plurality of support plates are respectively fixedly mounted on the side walls of the pickling tank, wherein a screw is rotatably mounted between two of the support plates, and a sliding rod is fixedly mounted between the other two support plates, one end of the moving frame is slidably connected to the sliding rod, and the other end of the moving frame is threadedly connected to the screw, a motor is fixedly mounted on the side wall of one of the support plates, and the output end of the motor is transmission connected to the screw.

[0008] As a further description of the above technical solution: the limiting mechanism includes a plurality of limiting rods, the plurality of limiting rods are fixedly mounted on the inner wall of the pickling tank, the plurality of limiting rods are fixedly mounted with limiting plates, the plurality of connecting plates are provided with a plurality of limiting holes, and the plurality of limiting holes and the limiting rods are slidably connected.

[0009] As a further description of the above technical solution: a plurality of sealing rings are fixedly installed on the movable plates, and the plurality of sealing rings are tightly fitted with the pickling tank when the movable plates slide into the pickling tank.

[0010] As a further description of the above technical solution: the inner wall of the limiting hole is provided with a magnetic attraction layer, and the limiting rod is magnetically connected to the limiting hole through the magnetic attraction layer.

[0011] As a further description of the above technical solution: rubber sealing strips are fixedly installed on the top ends of the plurality of connecting plates.

[0012] As a further description of the above technical solution: a drain trough is fixedly installed on the side wall of the pickling tank, and the drain trough is arranged below a plurality of connecting plates.

[0013] The utility model provides an anti-adhesion device for pickling of battery cells. It has the following beneficial effects: when the battery cells need to be pickled, the utility model first uses a moving mechanism to move multiple connecting plates and moving plates out of the pickling tank, then places multiple battery cells on the bottom plate between two connecting plates, then places multiple moving plates together with the connecting plates into the pickling tank, uses a limiting mechanism to limit them to prevent shaking during the pickling process, then places corresponding solutions in the pickling tank to pickle the battery cells, during the pickling process, due to the isolation between the battery plates, the anti-adhesion operation is achieved, and the filter can filter most of the impurities picked out by pickling, so that a large amount of impurities will not fall into the pickling tank, which is convenient for subsequent cleaning, when the pickling is completed, the solution is released, and then the connecting plate and the battery cells are taken out, the battery cells are taken out, and the pickling is completed, and the connecting plate is set in a detachable manner, and by disassembling the multiple connecting plates, the multiple connecting plates and the filter can be easily cleaned.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a battery cell pickling and anti-adhesion device proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model when taking out the battery sheet;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the movable plate, the connecting plate and the filter screen of the utility model;

[0019] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 5 It is a cross-sectional structural schematic diagram of the rubber sealing strip, connecting plate and filter screen of the utility model;

[0021] Figure 6 It is a schematic cross-sectional structure diagram of a magnetic attraction layer arranged inside the limiting hole of the utility model.

[0022] Legend:

[0023] 1. Pickling tank; 2. Support plate; 3. Motor; 4. Screw; 5. Moving frame; 6. Drain tank; 7. Slide rod; 9. Moving plate; 10. Sealing ring; 11. Connecting plate; 12. Rubber sealing strip; 13. Limit rod; 14. Limit plate; 15. Filter; 16. Limit hole; 17. Magnetic layer; 18. Bottom plate. DETAILED DESCRIPTION

[0024] 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 of the embodiments.

[0025] Reference Figure 1-6 , a battery cell pickling and anti-adhesion device comprises a pickling tank 1, a plurality of movable plates 9 are slidably installed on the side wall of the pickling tank 1, two connecting plates 11 are detachably installed on the side walls of the plurality of movable plates 9, a bottom plate 18 is fixedly connected between the two connecting plates 11, the two bottom plates 18 are arranged below the connecting plates 11, filters 15 are arranged inside the two connecting plates 11, a movable frame 5 is connected between the plurality of movable plates 9, a movable mechanism for driving the movable frame 5 to move is arranged on both sides of the pickling tank 1, and a limiting mechanism for limiting the plurality of connecting plates 11 is arranged inside the pickling tank 1; when the battery cell needs to be pickled, the movable mechanism is first used to move the plurality of connecting plates 11 and the movable plate 9 out of the pickling tank 1, and then the plurality of battery cells are placed between the two connecting plates 11. Above the bottom plate 18 between the connecting plates 11, then multiple movable plates 9 are placed together with the connecting plates 11 into the inside of the pickling tank 1, and a limiting mechanism is used to limit them to prevent shaking during the pickling process, and then a corresponding solution is placed in the pickling tank 1 to pickle the battery cells. During the pickling process, due to the isolation between each battery plate, an anti-adhesion operation is achieved, and the filter screen 15 can filter most of the impurities picked up by pickling, so that a large amount of impurities will not fall into the pickling tank 1, which is convenient for subsequent cleaning. When the pickling is completed, the solution is released, and then the connecting plates 11 and the battery cells are taken out, and the battery cells are taken out to complete the pickling, and the connecting plates 11 are arranged in a detachable manner. By disassembling the multiple connecting plates 11, the multiple connecting plates 11 and the filter screen 15 can be easily cleaned.

[0026] As the preferred technical solution of this embodiment, the moving mechanism includes a plurality of support plates 2, and the plurality of support plates 2 are respectively fixedly installed on the side walls of the pickling tank 1, wherein a screw rod 4 is rotatably installed between two of the support plates 2, and a slide rod 7 is fixedly installed between the other two support plates 2, one end of the moving frame 5 is slidably connected to the slide rod 7, and the other end of the moving frame 5 is threadedly connected to the screw rod 4, and a motor 3 is fixedly installed on the side wall of one of the support plates 2, and the output end of the motor 3 is transmission-connected to the screw rod 4; the motor 3 rotates, driving the screw rod 4 to rotate, and under the limiting and guiding action of the slide rod 7 and the moving frame 5, the movement of the moving frame 5 can be realized, and the movement of the plurality of connecting plates 11 can be further realized.

[0027] As a preferred technical solution of this embodiment, the limiting mechanism includes a plurality of limiting rods 13, and the plurality of limiting rods 13 are fixedly installed on the inner wall of the pickling tank 1, and a limiting plate 14 is fixedly installed on the plurality of limiting rods 13. A plurality of limiting holes 16 are opened on the plurality of connecting plates 11, and the plurality of limiting holes 16 are slidably connected to the limiting rods 13. The limiting effect between the limiting rods 13 and the limiting holes 16 can limit the plurality of connecting plates 11, and the limiting plate 14 can seal the gap between the two connecting plates 11 to prevent the battery cells from leaking out, thereby increasing the stability of the device.

[0028] As a preferred technical solution of this embodiment, multiple sealing rings 10 are fixedly installed on the movable plates 9, and the multiple sealing rings 10 are tightly fitted with the pickling tank 1 when the movable plates 9 slide into the pickling tank 1; the function of the sealing ring 10 is to increase the sealing performance between the connecting plate 11 and the pickling tank 1 to prevent the solution from flowing out of the gap during the pickling process.

[0029] As a preferred technical solution of this embodiment, the inner wall of the limiting hole 16 is provided with a magnetic attraction layer 17, and the limiting rod 13 is magnetically connected to the limiting hole 16 through the magnetic attraction layer 17; the setting of the magnetic attraction layer 17 can make the connection between the limiting hole 16 and the limiting rod 13 tighter.

[0030] As a preferred technical solution of this embodiment, a rubber sealing strip 12 is fixedly installed on the top of multiple connecting plates 11; the rubber sealing pad can locally seal the top of the two connecting plates 11, so that impurities will not flow out from the top of the connecting plates 11 in large quantities, and because the rubber sealing strip 12 is elastic, it can also play a role in clamping the top of the battery cell.

[0031] As the preferred technical solution of this embodiment, a drain trough 6 is fixedly installed on the side wall of the pickling tank 1, and the drain trough 6 is arranged below the multiple connecting plates 11; after the battery cells after pickling are pulled out from the inside of the pickling tank 1, acid and other substances will flow out, and the drain trough 6 can recover and clean the acid impurities to prevent the acid outflow device from corroding the surrounding environment.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for pickling and preventing adhesion of battery cells, comprising a pickling tank (1), characterized in that: A plurality of movable plates (9) are slidably mounted on the side walls of the pickling tank (1); two connecting plates (11) are detachably mounted on the side walls of the plurality of movable plates (9); a bottom plate (18) is fixedly connected between the two connecting plates (11); the two bottom plates (18) are arranged below the connecting plates (11); filters (15) are arranged inside the two connecting plates (11); a movable frame (5) is connected between the plurality of movable plates (9); movable mechanisms for driving the movable frame (5) to move are arranged on both sides of the pickling tank (1); and a limiting mechanism for limiting the plurality of connecting plates (11) is arranged inside the pickling tank (1).

2. The device for acid washing and anti-adhesion of battery cells according to claim 1, characterized in that: The moving mechanism comprises a plurality of support plates (2), wherein the plurality of support plates (2) are respectively fixedly mounted on the side walls of the pickling tank (1), wherein a screw rod (4) is rotatably mounted between two of the support plates (2), and a sliding rod (7) is fixedly mounted between the other two support plates (2), one end of the moving frame (5) is slidably connected to the sliding rod (7), and the other end of the moving frame (5) is threadedly connected to the screw rod (4), and a motor (3) is fixedly mounted on the side wall of one of the support plates (2), and the output end of the motor (3) is drivingly connected to the screw rod (4).

3. The device for acid washing and anti-adhesion of battery cells according to claim 1, characterized in that: The limiting mechanism comprises a plurality of limiting rods (13), the plurality of limiting rods (13) are fixedly mounted on the inner wall of the pickling tank (1), a limiting plate (14) is fixedly mounted on the plurality of limiting rods (13), a plurality of limiting holes (16) are formed on the plurality of connecting plates (11), and the plurality of limiting holes (16) and the limiting rods (13) are slidably connected.

4. The device for acid washing and anti-adhesion of battery cells according to claim 1, characterized in that: A plurality of sealing rings (10) are fixedly mounted on the movable plates (9), and the plurality of sealing rings (10) are tightly fitted with the pickling tank (1) when the movable plates (9) slide into the interior of the pickling tank (1).

5. The device for acid washing and anti-adhesion of battery cells according to claim 3, characterized in that: The inner wall of the limiting hole (16) is provided with a magnetic attraction layer (17), and the limiting rod (13) is magnetically connected to the limiting hole (16) via the magnetic attraction layer (17).

6. The device for acid washing and anti-adhesion of battery cells according to claim 1, characterized in that: A rubber sealing strip (12) is fixedly mounted on the top ends of the plurality of connecting plates (11).

7. The device for acid washing and anti-adhesion of battery cells according to claim 1, characterized in that: A drain trough (6) is fixedly mounted on the side wall of the pickling tank (1), and the drain trough (6) is arranged below a plurality of connecting plates (11).

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