A new type of electrolytic copper foil test tank

Abstract

The utility model relates to copper foil production equipment technical field discloses a novel electrolytic copper foil test tank, including the electrolytic tank of integrated setting, is provided with the overflow tank at electrolytic tank front and back two side walls outside, the inside of electrolytic tank is separated to form liquid inlet chamber, electrolytic chamber and liquid return chamber through the baffle, liquid inlet chamber is located electrolytic tank bottom's centre, electrolytic chamber is perpendicularly arranged above liquid inlet chamber, liquid return chamber is horizontally arranged at electrolytic tank's both sides, the inside of liquid inlet chamber is horizontally provided with liquid inlet pipe, and a plurality of liquid inlet holes are set up to the both side walls of liquid inlet pipe with the angle of 45 degrees of downward deflection, the utility model discloses four big functions of liquid inlet, electrolysis, liquid return, overflow are integrated in single electrolytic tank body, realize the substantial reduction of equipment volume and floor area, and simultaneously with the help of the liquid inlet pipe with specific angle and aperture, guide electrolyte to flow into electrolytic chamber with even and stable, low disturbance through grooving, significantly improve the local hydraulic pressure difference problem caused by traditional point type liquid inlet.

Description

Technical Field

[0001] This utility model relates to the field of copper foil production technology, specifically a novel electrolytic copper foil test tank. Background Technology

[0002] As a core material in the fields of lithium batteries and printed circuit boards, the performance of copper foil directly determines the application value of end products. Currently, electrochemical deposition is the mainstream technology for preparing copper foil. Its principle lies in using direct current to drive copper ions in copper sulfate solution to be adsorbed on the cathode surface and deposited into foil.

[0003] Based on this principle, existing electrolytic copper foil testing devices typically consist of multiple functional modules working in tandem. For example, the system disclosed in Chinese utility model patent CN221740474U includes an electrolytic cell, a receiving tank, a power circulation device, and a feeding device. It forms an electrolyte circulation loop through a complex pipeline network and utilizes a heat source to assist in dissolving and feeding. Similarly, the equipment shown in patent CN214496508U consists of a low-level tank, a high-level tank, an electrolytic cell with a cathode roller, ball valves, and filters, and also relies on complex pipelines to achieve liquid level control and liquid transfer.

[0004] Traditional electrolytic copper foil testing equipment generally relies on multi-module and complex circulation pipeline systems, resulting in large equipment size and cumbersome structure. It not only occupies space but is also difficult to move or deploy flexibly. At the same time, the complex pipeline and valve system makes the operation process cumbersome, usually requiring multiple people to work together to complete the start-up, debugging and daily maintenance, which increases labor and time costs and raises the operating threshold.

[0005] In summary, existing electrolytic copper foil testing devices have significant shortcomings in terms of structural compactness, ease of operation, and control of flow field uniformity within the electrolytic cell. Therefore, there is an urgent need to develop a novel electrolytic copper foil testing device that is highly integrated, easy to operate, and capable of effectively ensuring high uniformity of the flow field within the electrolytic cell (especially in the cathode working area) to improve experimental efficiency and sample quality. Utility Model Content

[0006] The purpose of this utility model is to provide a new type of electrolytic copper foil test cell to solve the following technical problems: Traditional electrolytic copper foil test devices generally rely on multi-module and complex circulation pipeline systems, resulting in large equipment size and cumbersome structure, which not only occupy space but are also difficult to move or deploy flexibly.

[0007] a) Traditional devices are bulky and difficult to move due to their multiple separate modules;

[0008] b) The point-feed design causes uneven flow field, resulting in copper foil thickness fluctuations and surface defects;

[0009] c) External piping and temperature control systems are cumbersome to operate.

[0010] The objective of this utility model can be achieved through the following technical solutions:

[0011] The objective of this utility model can be achieved through the following technical solution: A novel electrolytic copper foil test cell includes an integrated electrolytic cell. Overflow channels are provided on the outer sides of the front and rear side walls of the electrolytic cell. The interior of the electrolytic cell is divided by a partition to form an inlet chamber, an electrolytic chamber, and a return chamber. The inlet chamber is located at the center of the bottom of the electrolytic cell and is a sealed chamber enclosed by the partition and the bottom plate of the electrolytic cell. The electrolytic chamber is vertically arranged above the inlet chamber and located at the middle of the horizontal direction of the electrolytic cell. The return chambers are horizontally symmetrically arranged on both sides of the electrolytic cell. An inlet pipe is horizontally arranged inside the inlet chamber.

[0012] As a further embodiment of this utility model: the side wall of the liquid inlet pipe is provided with a plurality of liquid inlet holes with a diameter of 1.5mm at equal intervals along the length of the liquid inlet chamber at an angle of 45° downwards, and the top of the liquid inlet chamber is provided with a narrow slot.

[0013] As a further embodiment of this utility model: an overflow port is provided at the top of the front and rear partitions of the electrolysis chamber, an upper limit block is provided at the horizontal position of the center of the top of the electrolysis chamber, and a lower limit block is provided at the horizontal position of the center of the bottom plate. The two work together to fix the vertical position of the anode plate and the cathode plate.

[0014] As a further embodiment of this utility model: a return port is provided on the bottom plate of the return chamber, and several overflow holes are evenly opened on the top of the front and rear wall plates of the return chamber along the bottom direction of the overflow groove.

[0015] As a further embodiment of this utility model: a temperature control module is provided inside the return liquid chamber, the temperature control module including a seamless titanium heating rod and a temperature sensing probe evenly arranged in the return liquid chamber.

[0016] As a further embodiment of this utility model: the two return ports of the return chamber are connected to an anti-corrosion pump through pipes and tee fittings, and the outlet of the anti-corrosion pump is connected to the inlet pipe through a pipe.

[0017] As a further embodiment of this utility model: the overflow tank is connected to the return liquid chamber through the overflow hole, which is used to divert the electrolyte overflowing from the electrolysis chamber to the return liquid chamber.

[0018] As a further embodiment of this utility model, the overflow port is U-shaped.

[0019] The beneficial effects of this utility model are:

[0020] (1) This utility model adopts a highly integrated chamber structure, which integrates the functions of liquid inlet, electrolysis, liquid return and overflow into a single electrolytic cell body through a specific partition structure. This completely eliminates the traditional complex external pipelines and independent tanks (such as high / low level tanks and liquid receiving tanks), greatly reduces the size of the equipment and the floor space, simplifies the operation process of electrolytic copper foil, and reduces manpower and time costs.

[0021] (2) A pressure stabilizing zone is formed by the sealed design of the liquid inlet chamber. Combined with the 45° downward opening of the liquid inlet pipe and the narrow groove of the top plate, the electrolyte rises into the electrolysis chamber in a laminar flow state, effectively eliminating the local hydraulic pressure difference caused by the traditional point-type liquid inlet, and ensuring that the flow rate of the electrolyte in the working surface area of ​​the cathode plate / roller is highly uniform.

[0022] (3) Optimized overflow and return path: The U-shaped overflow port of the electrolysis chamber maintains a constant liquid level. The overflow liquid is diverted through the overflow tank and evenly injected into the return liquid chambers on both sides through the overflow hole. Finally, it is pumped back into the inlet liquid chamber by the anti-corrosion pump through the return liquid port. This path design is simple and smooth, which is conducive to maintaining a stable liquid level and achieving efficient return.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0026] Figure 2 This is a side view structural diagram of the present invention;

[0027] Figure 3 This is a top view of the structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the heating rod of this utility model.

[0029] In the diagram: 1. Electrolytic cell; 2. Temperature control module; 3. Corrosion-resistant pump; 4. Overflow tank; 5. Liquid inlet chamber; 6. Electrolysis chamber; 7. Liquid return chamber; 8. Liquid inlet pipe; 9. Liquid inlet hole; 10. Slot; 11. Overflow port; 12. Limiting block; 13. Liquid return port; 14. Overflow hole. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] In the field of copper foil production equipment technology, traditional electrolytic copper foil test tanks are bulky and cumbersome, resulting in lengthy and tedious operation procedures, significantly increasing labor and time costs. Furthermore, their single or multi-hole electrolyte pumping method easily leads to quality defects in the deposited copper foil samples, such as scorching, color difference, and uneven thickness, greatly affecting the reliability, repeatability, and sample qualification rate of experimental results, severely restricting research and development efficiency. The novel electrolytic copper foil test tank proposed in this invention addresses the shortcomings of traditional equipment by achieving high integration and simplified operation through innovative structural design. Simultaneously, it effectively ensures the high uniformity of the flow field within the electrolytic tank (especially in the cathode working area), thereby improving experimental efficiency and sample quality. The specific implementation method is as follows:

[0033] Example 1: As Figures 1-4 As shown, a novel electrolytic copper foil test tank includes an integrated electrolytic tank 1, a temperature control module 2, and an anti-corrosion pump 3. The electrolytic tank 1 has a cuboid structure, and overflow tanks 4 are provided on the outer sides of the front and rear side walls of the electrolytic tank 1. During electrolysis, the electrolyte level may rise abnormally due to temperature changes or external replenishment operations. The overflow tanks 4 can promptly collect the electrolyte overflowing from the side walls of the electrolytic tank 1, preventing the liquid from flowing directly to the outside of the equipment or the working environment, thus preventing electrolyte waste and environmental pollution. The interior of the electrolytic tank 1 is divided into multiple functional chambers by partitions. From the bottom of the tank upwards and along the sides, the chambers are arranged as follows: inlet chamber 5, electrolysis chamber 6, and return chamber 7.

[0034] Traditional electrolytic cells 1 pump electrolyte in by setting one or more perforated inlets on the side walls or bottom. This point- or localized inlet method inevitably leads to significant local hydraulic pressure differences and uneven flow rates within the electrolytic cell, especially in the working surface area of ​​the cathode roller. The uneven flow rate distribution can cause severe local concentration polarization and lead to an unbalanced current density distribution on the cathode surface, seriously affecting the reliability, repeatability, and sample qualification rate of experimental results, thus hindering research and development efficiency. In this embodiment, the inlet chamber 5 is located in the center of the bottom of the electrolytic cell 1. It is a closed chamber formed by three partitions and the bottom plate of the electrolytic cell 1. The inlet pipe 8 is horizontally arranged inside the inlet chamber 5. Along the length of the inlet chamber 5, the inlet pipe 8 has multiple 1.5mm diameter inlet holes 9 symmetrically opened on both side walls at an angle offset downwards by 45°. A narrow slot 10 is opened at the top of the inlet chamber 5.

[0035] The downward offset of the inlet hole 9 by 45° allows the electrolyte to flow evenly, smoothly, and with low disturbance upwards into the electrolysis chamber 6 through the top plate slot 10. This effectively eliminates the local hydraulic pressure difference caused by traditional point-type inlet feeding, ensuring that the electrolyte flow rate is highly uniform in the cathode plate / roller working surface area. It also reduces the vertical impact of the liquid on the bottom plate of the electrolysis cell, avoiding electrolyte splashing or agitation of sediment at the bottom of the cell due to excessive impact force. This improves the reliability, repeatability, and sample qualification rate of experimental results.

[0036] The electrolysis chamber 6 is vertically positioned above the liquid inlet chamber 5 and located in the middle of the horizontal direction of the electrolysis cell 1. The slot 10 at the upper end of the top plate of the liquid inlet chamber 5 is connected to the electrolysis chamber 6 above. An overflow port 11 is provided at the top of the front and rear partitions of the electrolysis chamber 6. The overflow port 11 is U-shaped. Limiting blocks 12 are provided at the horizontal position of the top and bottom plates inside the electrolysis chamber 6. The limiting blocks 12 are used to precisely fix the anode plate and the cathode plate.

[0037] The return liquid chamber 7 is horizontally and symmetrically arranged on both sides of the electrolytic cell 1, that is, on the left and right sides of the electrolytic cell 1. The bottom plate of the return liquid chamber 7 is provided with a return liquid port 13. Several overflow holes 14 are evenly opened on the top of the front and rear wall plates of the return liquid chamber 7 along the bottom direction of the overflow tank 4.

[0038] The overflow hole 14 at the top of the return chamber 7 is connected to the bottom of the overflow tank 4, so that the electrolyte overflowing from the electrolysis chamber 6 is diverted through the overflow tank 4 to the left and right return chambers 7, and then flows back in through the bottom return port 13.

[0039] The temperature control module 2 is located inside the return liquid chamber 7. The temperature control module 2 includes a seamless titanium heating rod and a temperature sensing probe. The seamless titanium heating rod and the temperature sensing probe are evenly arranged in the return liquid chamber 7 to heat the electrolyte circulating here and monitor its temperature. The seamless titanium heating rod can be a Teflon heating tube 220V-1Kw, and the temperature sensing probe can be a PT100 platinum resistance temperature sensor.

[0040] The anti-corrosion pump 3 constitutes the power source for electrolyte circulation. Its inlet is connected to the two return ports 13 of the left and right return chambers 7 through a pipe and a tee connector, which is used to draw back the electrolyte. Its outlet is connected to the inlet pipe 8 inside the inlet chamber 5 through a pipe, which is used to pressurize the electrolyte and deliver it to the inlet chamber 5.

[0041] The working principle of this invention is as follows: The prepared electrolyte is injected into the return chamber 7. The electrolyte flows through two return ports 13 into the inlet pipe 8 connected to the inlet of the anti-corrosion pump 3, and is then pumped into the inlet pipe 8 of the electrolytic cell 1 connected to the pump outlet. A row of inlet holes 9 is symmetrically arranged vertically along the horizontal direction on the inlet pipe 8. The electrolyte enters the inlet chamber 5 through these small holes in an oblique spray manner, avoiding vertical impact on the bottom of the tank. It then flows evenly and steadily into the upper electrolytic chamber 6 through the narrow slot 10 at the top. The electrolyte enters the inlet chamber 5 through the inlet holes 9, and then enters the electrolytic chamber 6 at a uniform flow rate through the narrow slot at the top of the inlet chamber 5. After filling the electrolytic chamber 6, it enters the overflow trough 4 through the U-shaped overflow port 11 at the top, and then returns to the return chamber 7 through the overflow hole 14, thus circulating continuously.

[0042] Inside the return electrolyte chamber 7, the seamless titanium heating rod of the temperature control module 2 and the temperature sensing probe work together. The temperature sensing probe monitors the temperature of the return electrolyte in real time. When the detected temperature is lower than the set value, the seamless titanium heating rod automatically starts to heat the electrolyte. If the temperature is too high, it can be adjusted by the external temperature control system to ensure that the electrolyte is always within the appropriate temperature range for electrolysis, thus ensuring the stability and efficiency of the electrolysis reaction.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel electrolytic copper foil test cell, characterized in that, The electrolytic cell (1) is integrated and has overflow channels (4) on the outer sides of its front and rear side walls. The interior of the electrolytic cell (1) is divided by partitions to form an inlet chamber (5), an electrolysis chamber (6), and a return chamber (7). The inlet chamber (5) is located at the center of the bottom of the electrolytic cell (1) and is a sealed chamber formed by three partitions and the bottom plate of the electrolytic cell (1). The electrolysis chamber (6) is vertically arranged above the inlet chamber (5) and located in the middle of the horizontal direction of the electrolytic cell (1). The return chamber (7) is horizontally symmetrically arranged on both sides of the electrolytic cell (1). The inlet pipe (8) is horizontally arranged inside the inlet chamber (5).

2. The novel electrolytic copper foil test cell according to claim 1, characterized in that, The two side walls of the liquid inlet pipe (8) are inclined downward at a 45° angle, and multiple liquid inlet holes (9) with a diameter of 1.5 mm are symmetrically opened at equal intervals along the length of the liquid inlet chamber (5). A narrow slot (10) is opened at the top of the liquid inlet chamber (5).

3. The novel electrolytic copper foil test cell according to claim 1, characterized in that, An overflow port (11) is provided at the top of the front and rear partitions of the electrolysis chamber (6). A limiting block (12) is provided at the horizontal position of the top and bottom plates inside the electrolysis chamber (6). The limiting block (12) is used to precisely fix the anode plate and the cathode plate.

4. The novel electrolytic copper foil test cell according to claim 1, characterized in that, The bottom plate of the return chamber (7) is provided with a return port (13), and the top of the front and rear wall plates of the return chamber (7) are evenly provided with a number of overflow holes (14) along the bottom direction of the overflow groove (4).

5. A novel electrolytic copper foil test cell according to claim 1, characterized in that, The return chamber (7) is equipped with a temperature control module (2), which includes a seamless titanium heating rod and a temperature sensing probe evenly arranged in the return chamber (7).

6. A novel electrolytic copper foil test cell according to claim 1, characterized in that, The two return ports (13) of the return chamber (7) are connected to the anti-corrosion pump (3) through pipes and tee joints. The outlet of the anti-corrosion pump (3) is connected to the inlet pipe (8) through pipes.

7. A novel electrolytic copper foil test cell according to claim 4, characterized in that, The overflow tank (4) is connected to the return liquid chamber (7) through the overflow hole (14) and is used to divert the electrolyte overflowing from the electrolysis chamber (6) to the return liquid chamber (7).

8. A novel electrolytic copper foil test cell according to claim 3, characterized in that, The overflow port (11) is U-shaped.

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