Efficient energy-saving electric conduction device for electrolytic cell and electrolytic cell

Abstract

The utility model discloses a kind of efficient energy-saving electric conductive devices of electrolytic cell and electrolytic cell, comprising: anode plate;Anode groove, the anode groove is installed with a row of anode plate stud fixedly connected with anode plate on radial direction, the anode groove is also provided with two rows of electrically conductive hole about anode groove central axis symmetrical distribution, adjusting bolt is installed in the electrically conductive hole, the end of the adjusting bolt is installed with the electrically conductive seat that is attached with the surface of anode plate, the electrically conductive seat and electrically conductive hole gap cooperation, the part of adjusting bolt located outside anode groove is installed with fixed nut cooperation with anode groove, the end of adjusting bolt located outside anode groove is installed with outer hexagon nut.The beneficial effect of the utility model is that anode plate is adjusted by adjusting bolt on the back of anode groove body, electrically conductive seat can be freely telescopic in electrically conductive hole to ensure that it is attached with anode plate all the time, so as to reach the purpose of freely adjusting cathode and anode distance, and the attachment degree between cathode and anode is good, and the processing precision requirement of anode groove is reduced.

Description

Technical Field

[0001] This utility model relates to the field of foil making machine technology, specifically to an electrolytic cell conductive device and an electrolytic cell. Background Technology

[0002] Electrolytic copper foil, a key functional raw material in the electronics manufacturing industry, possesses excellent electrical conductivity and machinability. It is commonly used as a current collector in lithium-ion battery anode materials, making it a crucial component of lithium-ion batteries. Most copper foil manufacturers produce electrolytic copper foil using a continuous roller electrolysis method. This method involves installing a cathode roller as the cathode and an anode made of insoluble material within the electrolytic cell. The cathode roller is immersed in the electroplating solution. After energizing, copper in the electrolyte is deposited onto the roller surface to form copper foil. The thickness of the foil depends on the set current and rotation speed. The foil is then peeled, acid-washed, electroplated, washed, dried, and wound, before further processing into slitting and packaging. In the electrolytic production process, a common consensus is that the uniformity of the anode current distribution is closely related to the stability of the electrolytic cell. Severe unevenness in the anode current distribution causes fluctuations in cell voltage and instability in the magnetic field, ultimately leading to increased cell temperature, large changes in the surface potential of the cathode and anode, shortened anode and cathode lifespan, and uneven surface density of the electrolytic copper foil. This severely affects the quality of the copper foil, resulting in a low yield rate. In addition, in recent years, many copper foil factories have tried various methods to save electricity, but with little success. The traditional method is to increase or decrease the cell voltage (P=UI) by increasing or decreasing the distance between the cathode and anode. However, once the foil-making machine is designed and manufactured and put into production, its structure is fixed and the distance between the cathode and anode cannot be adjusted. The only way to adjust it is to increase or decrease the thickness of the anode plate, but it is not known how thick it is. If the anode plate is too thick, the distance between the electrodes will be small, affecting the electrolyte flow rate and resulting in insufficient copper ion replenishment and copper deficiency. If the anode plate is too thin, the distance between the electrodes will be large, resulting in high energy consumption. The specific method needs to be determined based on factors such as the actual thickness of the copper foil, current efficiency, and actual site conditions. For example, replacing the 6mm anode plate with an 8mm anode plate to shorten the distance between the electrodes will also increase the copper foil production cost, which is not conducive to the development of enterprises in the severe copper foil market.

[0003] For example, Chinese invention patent authorization announcement number CN111291489B discloses a method for calculating and adjusting the electrode distance between a cathode roller and an anode groove. The anode groove consists of two pieces, each with an opening at its bottom, and the distance between the bottom openings of the anode grooves is k. In the initial state, the anode groove and the cathode roller are concentric, and the two anode grooves are symmetrically arranged. Using the electrode distance calculation and adjustment method of this application, the electrode distance can be accurately adjusted. This patent calculates and adjusts the electrode distance by moving the cathode roller up and down, which involves a significant amount of work. Utility Model Content

[0004] The problem this invention aims to solve is that the distance between the cathode and anode in existing electrolytic cells cannot be easily adjusted. To address this, an efficient and energy-saving conductive device and an electrolytic cell are provided.

[0005] The technical solution of this utility model is: a high-efficiency and energy-saving conductive device for an electrolytic cell, comprising: an anode plate; an anode groove, wherein a row of anode plate studs fixed to the anode plate are installed radially on the anode groove, and two rows of conductive holes symmetrically distributed about the central axis of the anode groove are also provided on the anode groove, wherein an adjusting bolt is installed in the conductive hole, and a conductive seat that fits against the surface of the anode plate is installed at the end of the adjusting bolt, the conductive seat and the conductive hole are clearance-fitted, a fixing nut that fits with the anode groove is installed on the part of the adjusting bolt outside the anode groove, and an external hexagonal nut is installed at the end of the adjusting bolt outside the anode groove.

[0006] The improvement to the above solution is that an O-ring is fitted between the conductive base and the conductive hole.

[0007] In the above scheme, the anode plate stud is fixed to the anode groove by the anode plate fixing nut and the sealing cap.

[0008] An electrolytic cell includes: a high-efficiency energy-saving conductive device and a cathode roller as described above.

[0009] In the above scheme, overflow ports are provided on the two anode plates located at both ends of the anode tank.

[0010] The anode tank described in the above scheme has an inlet at its lowest point.

[0011] A further improvement to the above scheme is that the top of the anode groove is provided with a cover plate for the cathode roller to pass through.

[0012] A further improvement to the above scheme is that an acid mist exhaust pipe is connected to the side of the anode tank.

[0013] The beneficial effects of this utility model are that the height of the anode plate can be adjusted by adjusting the bolts on the back of the anode tank, and the conductive seat can freely extend and retract within the conductive hole to ensure that it is always in contact with the anode plate. This achieves the purpose of freely adjusting the distance between the cathode and anode and the ground. The fit between the cathode and anode is good, the processing precision requirements of the anode tank are reduced, and the current distribution is uniform, which improves the efficiency of copper foil electrolysis, improves production efficiency, and enables the sustainable development of enterprises. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the high-efficiency and energy-saving conductive device for the electrolytic cell of this utility model;

[0015] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0016] Figure 3for Figure 1 Distribution diagram of the intermediate conductive base;

[0017] Figure 4 This is an isometric view of the electrolytic cell of this utility model;

[0018] Figure 5 for Figure 4 The main view;

[0019] Figure 6 for Figure 4 Top view;

[0020] Figure 7 for Figure 4 A partial view;

[0021] In the diagram, 1. Cathode roller, 2. Conductive copper busbar, 3. Overflow pipe, 4. Cover plate, 5. Tank side plate, 6. Transmission gear, 7. Acid mist exhaust pipe, 8. Anode plate, 9. Liquid inlet, 10. Conductive hole, 11. Overflow port, 12. Anode plate stud, 13. Conductive device, 14. Anode tank, 15. Conductive seat, 16. O-ring seal, 17. Adjusting bolt, 18. Fixing nut, 19. Hexagonal nut, 20. Anode plate fixing nut, 21. Sealing cap. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1-3 As shown, a high-efficiency and energy-saving conductive device for an electrolytic cell includes: an anode plate 8; an anode groove 14, wherein a row of anode plate studs 12 fixed to the anode plate are installed radially on the anode groove, and two rows of conductive holes 10 symmetrically distributed about the central axis of the anode groove are also provided on the anode groove. An adjusting bolt 17 is installed in the conductive hole, and a conductive seat 15 that fits against the surface of the anode plate is installed at the end of the adjusting bolt. The conductive seat is clearance-fitted with the conductive hole. A fixing nut 18 that fits with the anode groove is installed on the part of the adjusting bolt outside the anode groove, and an external hexagonal nut 19 is installed at the end of the adjusting bolt outside the anode groove.

[0024] Specifically, each row of the anode plate has 14 conductive holes, totaling 28 holes across two rows, corresponding to 28 conductive seats. This design prevents the anode plate from becoming loose while increasing its conductive area, resulting in a more uniform current distribution and improved electrolysis efficiency. Conductive copper busbars 2 are installed on the outer wall of the anode tank, with their positions corresponding to each anode plate.

[0025] As a preferred embodiment of this utility model, an O-ring 6 is adapted between the conductive base and the conductive hole to prevent electrolyte leakage. Figure 3 The conductive device 13 in the text refers to the combination of the conductive base, conductive hole and adjusting bolt.

[0026] The anode plate stud is fixed to the anode groove by the anode plate fixing nut 20 and the sealing cap 21. When the anode plate needs to be adjusted, the anode plate stud can be pulled by loosening the fixing nut and the sealing cap, thereby changing the electrode distance between the anode plate and the cathode roller.

[0027] By adjusting the height of the stud 21 on the anode plate 8 and the conductive seat 15, the electrode distance (H) between the anode plate 8 and the cathode roller 1 can be controlled. An appropriate electrode distance can effectively save energy and reduce consumption. When the anode plate 8 needs to be replaced, simply loosen the adjusting bolt 17, retract the conductive seat 15 into the conductive hole 10 designed in the tank, and then remove the fixing nut 20 and the sealing cap 21 on the anode plate 8 to loosen and replace the anode plate 8.

[0028] like Figure 4-7 As shown, an electrolytic cell includes: several anode plates spliced ​​together within an anode tank; an inlet 9 is located at the lowest point of the anode tank, where the anode plates have splicing seams to match the inlet; four overflow ports 11 are provided on two anode plates located at both ends of the anode tank; the anode tank consists of two tank side plates 5 and a cover plate 4, housing the lower part of the cathode roller; a roller shaft is mounted at the center of the cathode roller, one end of which is connected to an external drive mechanism via a transmission gear, driving the roller shaft to rotate via the drive mechanism, such as a motor.

[0029] As a preferred embodiment of this utility model, the side of the anode tank is connected to an acid mist exhaust pipe 7. The generated acid mist is drawn and separated through the acid mist exhaust pipe by an external negative pressure device to prevent environmental pollution.

[0030] The features of this utility model are as follows: 1. Several conductive seats are evenly distributed horizontally and vertically along the inner arc of the anode groove, contacting the anode plate to increase the conductive area of ​​the anode plate and make the current distribution more uniform; 2. The contact of several conductive seats with the anode plate makes the anode plate more uniformly stressed, improves the shock resistance of the anode plate, and makes the electrolysis process more stable; 3. The movable conductive seats allow for free adjustment of the electrode distance between the anode plate and the cathode roller, achieving controllable electrode distance and saving energy; 4. One end of the conductive seat has a contact surface that is consistent with the arc surface of the anode plate, maximizing the contact area and reducing current resistance; 5. The requirements for the machining accuracy of the arc of the anode plate and the inner arc of the anode groove are greatly reduced, which can reduce the equipment manufacturing cost; 6. This utility model has a simple structure, excellent performance, and is suitable for large-scale application in copper foil factories.

[0031] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency and energy-saving conductive device for an electrolytic cell, comprising: Anode plate (8); anode groove (14), characterized in that: a row of anode plate studs (12) fixed to the anode plate are installed radially on the anode groove, and two rows of conductive holes (10) symmetrically distributed about the central axis of the anode groove are also provided on the anode groove. An adjusting bolt (17) is installed in the conductive hole, and a conductive seat (15) that fits against the surface of the anode plate is installed at the end of the adjusting bolt. The conductive seat is clearance-fitted with the conductive hole. A fixing nut (18) that fits with the anode groove is installed on the part of the adjusting bolt located outside the anode groove, and an external hexagonal nut (19) is installed at the end of the adjusting bolt located outside the anode groove.

2. The high-efficiency energy-saving conductive device for an electrolytic cell as described in claim 1, characterized in that: An O-ring (16) is fitted between the conductive base and the conductive hole.

3. The high-efficiency energy-saving conductive device for an electrolytic cell as described in claim 1, characterized in that: The anode plate stud is fixed to the anode groove by the anode plate fixing nut (20) and the sealing cap (21).

4. An electrolytic cell, characterized in that: include: An efficient and energy-saving conductive device for an electrolytic cell and a cathode roller (1) as described in any one of claims 1-3.

5. An electrolytic cell as described in claim 4, characterized in that: Overflow ports (11) are provided on the two anode plates located at both ends of the anode tank.

6. An electrolytic cell as described in claim 4, characterized in that: An inlet (9) is provided at the lowest point of the anode tank.

7. An electrolytic cell as described in claim 4, characterized in that: The top of the anode groove is provided with a cover plate (4) for the cathode roller to pass through.

8. An electrolytic cell as described in claim 4, characterized in that: The side of the anode tank is connected to an acid mist exhaust pipe (7).

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