Novel liquid storage tank body for producing electrolytic copper foil of lithium battery
Through the innovative design of the internal storage tank and the external circulation tank, the problems of increased electrolyte consumption and unstable production caused by the large volume of traditional storage tanks have been solved. This has enabled efficient circulation of electrolyte and full utilization of additives, thereby reducing production costs.
Patent Information
- Application Number
- CN202423214805.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In the traditional production of lithium-ion battery electrolytic copper foil, the large volume of the storage tank leads to an increase in the amount of electrolyte used, a long residence time for additives, high consumption, increased costs, and an unstable production process.
The design incorporates an internal storage tank and an external circulation tank, with the internal storage tank being lower than the external circulation tank. These tanks are connected by pipes, and valves control the flow of the electrolyte, enabling efficient circulation and storage of the electrolyte.
Reduce the total amount of electrolyte used, reduce additive consumption, improve production stability, reduce costs, and ensure full utilization of electrolyte.
Smart Images
Figure CN223619354U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium-ion battery electrolytic copper foil production technology, and in particular to a novel liquid storage tank for lithium-ion battery electrolytic copper foil production. Background Technology
[0002] As competition intensifies in the lithium-ion battery electrolytic copper foil market, the industry is increasingly focusing on high performance and low cost, placing increasingly stringent demands on every stage of lithium-ion battery electrolytic copper foil production. As a device for storing and transferring electrolyte, the storage tank, designed to hold all electrolyte after system shutdown, typically has a volume reaching 100m³. 3 -200m 3 With diameters exceeding 5m, the total amount of electrolyte increases during production to ensure a minimum circulation rate. This leads to an increase in the amount of electrolyte used in production, resulting in a longer residence time of additives in the electrolyte in the storage tank during lithium-ion electrolytic copper foil production. Consequently, these additives are not fully utilized in a timely manner, leading to increased consumption and higher costs. Utility Model Content
[0003] The purpose of this utility model is to overcome the defects of the existing technology and provide a new type of liquid storage tank for lithium battery electrolytic copper foil production.
[0004] The objective of this utility model can be achieved through the following technical solutions:
[0005] A novel liquid storage tank for lithium-ion battery electrolytic copper foil production includes an inner liquid storage tank and an outer circulation tank. The inner liquid storage tank is located inside the outer circulation tank and is a cylindrical tank with a lower height than the outer circulation tank. The inner liquid storage tank and the outer circulation tank are connected on one side of the bottom via a first pipe. A first valve is installed on the first pipe.
[0006] Furthermore, the inner liquid storage tank and the outer circulation tank are connected on the other side of the bottom via a second pipe.
[0007] Furthermore, a second valve is provided on the second pipe at the end near the external circulation tank; a third valve is provided on the second pipe at the end near the internal storage tank.
[0008] Furthermore, a liquid outlet is provided on the second pipeline between the second valve and the third valve.
[0009] Furthermore, a return pipe for liquid return is provided in the external circulation tank; one end of the return pipe is inserted into the external circulation tank, and the other end is located outside the top of the external circulation tank.
[0010] Furthermore, the return pipe is a pipe with a figure-7 shaped structure.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] (1) This utility model designs the liquid storage tank into an inner liquid storage tank and an outer circulation tank. The height of the inner liquid storage tank is slightly lower than that of the outer circulation tank. The bottoms of the two tanks are connected by a pipe, and a valve is designed on the pipe. When the machine is stopped, the electrolyte will overflow into the inner liquid storage tank. When the machine is started, the first valve connected to the bottom is opened, and the liquid in the inner liquid storage tank flows into the outer circulation tank to ensure sufficient circulation volume. After the electrolyte circulation volume is sufficient, the first valve is closed. This can satisfy the requirement of storing all the electrolyte after the system is stopped, while reducing the electrolyte involved in the circulation production during the production process.
[0013] (2) The external circulation tank of this utility model has a small volume and a fast electrolyte circulation speed. The additives will not stay in the storage tank for too long and can be fully utilized, thereby reducing the consumption of additives in the storage tank and reducing costs. At the same time, it can effectively control the total liquid volume used in production. The excess liquid volume during the production process enters the inner storage tank for storage and does not participate in production. The fluctuation of the total liquid volume is reduced, making the production process more stable. Attached Figure Description
[0014] Figure 1 This is a front view of the liquid storage tank provided by this utility model;
[0015] Figure 2 A top view of the liquid storage tank provided by this utility model.
[0016] The labels in the diagram indicate:
[0017] 1. Inner storage tank; 2. Outer circulation tank; 3. First pipe; 4. First valve; 5. Second pipe; 6. Second valve; 7. Third valve; 8. Outlet; 9. Return pipe. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0024] Example
[0025] like Figure 1 and 2As shown, a novel storage tank for lithium-ion battery electrolytic copper foil production includes an inner storage tank 1 and an outer circulation tank 2. The inner storage tank 1 is located inside the outer circulation tank 2 and is a cylindrical tank with a lower height than the outer circulation tank 2. The inner storage tank 1 and the outer circulation tank 2 are connected at one bottom by a first pipe 3. A first valve 4 is installed on the first pipe 3. When the machine is stopped, the electrolyte overflows into the inner storage tank 1. When the machine is started, the first valve 4 connected at the bottom is opened, and the liquid in the inner storage tank 1 flows into the outer circulation tank 2, ensuring sufficient circulation. Once the electrolyte circulation volume is sufficient, the first valve 4 is closed. This not only ensures that all electrolyte is stored after system shutdown but also reduces the amount of electrolyte involved in the circulation process during production. Furthermore, the smaller volume of the external circulation tank 2 allows for faster electrolyte circulation, preventing additives from remaining in the storage tank for too long and ensuring their full utilization. This reduces the amount of additives consumed in the storage tank, thereby lowering costs. Simultaneously, it effectively controls the total liquid volume used in production. Excess liquid volume during production is stored in the internal storage tank and does not participate in production, reducing fluctuations in the total liquid volume and making the production process more stable.
[0026] To facilitate the replenishment and discharge of electrolyte, the inner storage tank 1 and the outer circulation tank 2 are connected at the bottom via a second pipe 5 on the other side. A second valve 6 is installed on the second pipe 5 near the outer circulation tank 2, and a third valve 7 is installed on the second pipe 5 near the inner storage tank 1. An outlet 8 is located on the second pipe 5 between the second valve 6 and the third valve 7. When liquid needs to be discharged from the corresponding tank, simply open the corresponding second valve 6 or third valve 7, and the liquid will be discharged from the outlet 8.
[0027] For the purpose of liquid return, the external circulation tank 2 is provided with a return pipe 9 with a figure-7 structure; one end of the return pipe 9 is inserted into the external circulation tank 2, and the other end is located outside the top of the external circulation tank 2.
[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A novel storage tank for lithium-ion battery electrolytic copper foil production, characterized in that, The liquid storage tank includes an inner liquid storage tank (1) and an outer circulation tank (2); the inner liquid storage tank (1) is located inside the outer circulation tank (2) and is a cylindrical tank with a height lower than that of the outer circulation tank (2); the inner liquid storage tank (1) and the outer circulation tank (2) are connected to each other on one side of the bottom through a first pipe (3); a first valve (4) is provided on the first pipe (3).
2. The novel storage tank for lithium-ion battery electrolytic copper foil production according to claim 1, characterized in that, The inner liquid storage tank (1) and the outer circulation tank (2) are connected on the other side of the bottom through a second pipe (5).
3. The novel storage tank for lithium-ion battery electrolytic copper foil production according to claim 2, characterized in that, A second valve (6) is provided on the second pipe (5) at one end near the outer circulation tank (2); a third valve (7) is provided on the second pipe (5) at one end near the inner storage tank (1).
4. The novel storage tank for lithium-ion battery electrolytic copper foil production according to claim 3, characterized in that, The second pipe (5) is provided with an outlet (8) located between the second valve (6) and the third valve (7).
5. A novel storage tank for lithium-ion battery electrolytic copper foil production according to claim 1, characterized in that, The external circulation tank (2) is provided with a return pipe (9) for liquid return; one end of the return pipe (9) is inserted into the external circulation tank (2), and the other end is located outside the top of the external circulation tank (2).
6. A novel storage tank for lithium-ion battery electrolytic copper foil production according to claim 5, characterized in that, The return pipe (9) is a pipe with a 7-shaped structure.