Copper foil electrolytic heater

Abstract

The utility model discloses a copper foil electrolytic heater, which comprises a heating tank (1), the steam valve (2) is communicated with the heating tank through a steam pipeline; the water inlet valve (3) is communicated with the heating tank through a water inlet pipeline; the temperature sensor (4) is mounted on the heating tank; the heat exchanger (5) is communicated with the heating tank through a circulating pipeline; and the circulating pump (6) is connected to the circulating pipeline. The utility model has the beneficial effects that the water temperature is firstly heated to 75 DEG C in the heating tank through steam, when the water temperature reaches 75 DEG C, the circulating pump is started, the electrolyte is heated by utilizing proper water temperature in the heat exchanger, and the heating water temperature is displayed and controlled in real time in the heating process through the heating mode, so that the water temperature can be controlled in real time. And the added electrolyte can be effectively prevented from deteriorating due to high temperature, so that the quality of the copper foil is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of electrolytic copper foil, in particular to a copper foil electrolytic heater. Background Art

[0002] As a functional key basic raw material in the electronics manufacturing industry, electrolytic copper foil has good electrical conductivity and mechanical processing properties. It is often used as a current collector for negative electrode materials of lithium batteries and is an important component of lithium-ion batteries. The copper foil factory makes copper raw materials into copper sulfate solution, and then deposits the copper sulfate solution into raw foil through direct current electrodeposition in special equipment, and then performs surface treatment, slitting, and testing to make finished products. The existing electrolyte heater includes a plate heat exchanger, a steam switch gate valve, and a steam trap. When the electrolyte temperature is lower than the process requirement, the steam gate valve is opened and the electrolyte is heated by the plate heat exchanger to achieve the purpose of heating the electrolyte. During the heating process of the existing electrolyte, the temperature of the steam reaches about 170°C, which will cause the organic additive components in the electrolyte to deteriorate due to high temperature. The copper foil produced is prone to problems such as seersucker, pinholes, and inclusions that exceed the standard, causing the product to be scrapped.

[0003] China Utility Model Patent Publication No. CN216958231U discloses an electrolyte heating device, including: an infusion tube and a heating element; one end of the infusion tube is used to communicate with a liquid storage tank, and the other end of the infusion tube is used to communicate with an injection machine, the liquid storage tank is used to store electrolyte, the infusion tube is used to transport electrolyte, and the injection machine is used to inject electrolyte into a battery cell; the heating element is sleeved on the outside of the infusion tube, and the heating element is used to transfer heat to the infusion tube to heat the electrolyte in the infusion tube. The heating element is a resistance wire, which has high energy consumption, low energy utilization, and cannot accurately control the heating temperature. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the temperature of the electrolyte is too high when it is heated, which causes the additive to deteriorate. For this purpose, a copper foil electrolytic heater is provided.

[0005] The technical solution of the utility model is: a copper foil electrolytic heater, comprising: a heating tank; a steam valve, which is connected to the heating tank through a steam pipeline; a water inlet valve, which is connected to the heating tank through a water inlet pipeline; a temperature sensor, which is installed on the heating tank; a heat exchanger, which is connected to the heating tank through a circulation pipeline; and a circulation pump, which is connected to the circulation pipeline.

[0006] The improvement of the above solution is that the heating tank is connected with an overflow pipe.

[0007] The heat exchanger in the above scheme is a plate and frame heat exchanger.

[0008] A further improvement of the above solution is that the circulation pump is connected to the temperature sensor signal.

[0009] The beneficial effect of the utility model is to heat the water temperature to 75°C in the heating tank by steam first, and when the water temperature reaches 75°C, start the circulation pump, and heat the electrolyte in the heat exchanger with the appropriate water temperature. Through the above heating method, the heating water temperature is displayed and controlled in real time during the heating process, which can effectively protect the addition of the electrolyte from being deteriorated due to high temperature, thereby significantly improving the quality of the copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the utility model;

[0011] In the figure, 1. heating tank, 2. steam valve, 3. water inlet valve, 4. temperature sensor, 5. heat exchanger, 6. circulation pump, 7. overflow pipe. DETAILED DESCRIPTION

[0012] The technical scheme in the embodiment of the utility model is clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments of ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0013] A copper foil electrolytic heater comprises: a heating tank 1, which may be an open-top structure, similar to a trough structure; a steam valve 2, which is connected to the heating tank through a steam pipeline; a water inlet valve 3, which is connected to the heating tank through a water inlet pipeline; a temperature sensor 4, which is installed on the heating tank and is used to sense the temperature in the heating tank; a heat exchanger 5, which is connected to the heating tank through a circulation pipeline, and the heat exchanger may be a spray heat exchanger or a shell and tube heat exchanger; and a circulation pump 6, which is connected to the circulation pipeline.

[0014] As a preferred example of the present invention, the heat exchanger is a plate-frame heat exchanger.

[0015] As another preferred embodiment of the present invention, the heating tank is connected with an overflow pipe 7, and the steam condensed water in the heating tank is discharged through the overflow pipe.

[0016] As another preferred example of the present invention, the circulation pump is connected to a temperature sensor signal.

[0017] like Figure 1As shown, the working principle of the utility model is as follows: when the electrolyte temperature is lower than the process requirement, first open the water inlet valve in the heating tank and fill it with tap water, open the steam valve, use steam to quickly heat the water temperature to about 75°C, start the circulation pump, and heat the electrolyte through the plate heat exchanger. During the operation, the temperature sensor of the heating tank displays the water temperature of the heating tank in real time. When the water is lower than 75°C, open the steam valve to increase the steam flow rate to increase the water temperature of the heating tank. When the temperature of the heating tank is higher than 75°C, close the steam valve to reduce the steam flow rate and lower the water temperature of the heating tank. The water temperature of the heating tank is always controlled at about 75°C by adjusting the opening size of the steam valve. The steam condensed water in the heating tank is discharged through the overflow pipe. The above-mentioned electrolyte heating method can effectively protect the organic components of the additives in the electrolyte from being destroyed, thereby ultimately improving the quality of the copper foil.

[0018] Features of this utility model:

[0019] 1. The temperature-controlled electrolyte heating method is adopted to solve the problem of destroying the organic components of additives during the electrolyte heating process, and improve the quality and yield rate of copper foil;

[0020] 2. It can be used to heat lithium battery copper foil electrolyte and standard foil electrolyte to meet the electrolyte heating needs of different products;

[0021] 3. The size of the heating tank and plate heat exchanger can be selected according to the actual situation on site, ensuring the heating of electrolyte in different foil production systems;

[0022] 4. Simple structure, good use effect, suitable for promotion and use in small, medium and large copper foil factories.

Claims

1. A copper foil electrolytic heater, comprising: A heating tank (1); a steam valve (2), wherein the steam valve is connected to the heating tank via a steam pipeline; A water inlet valve (3), the water inlet valve being connected to the heating tank via a water inlet pipeline; a temperature sensor (4), the temperature sensor being mounted on the heating tank; a heat exchanger (5), the heat exchanger being connected to the heating tank via a circulation pipeline; and a circulation pump (6), the circulation pump being connected to the circulation pipeline.

2. A copper foil electrolytic heater as claimed in claim 1, characterized in that: The heating tank is connected to an overflow pipe (7).

3. A copper foil electrolytic heater as claimed in claim 1, characterized in that: The heat exchanger is a plate and frame heat exchanger.

4. A copper foil electrolytic heater as claimed in claim 1, characterized in that: The circulation pump is connected to the temperature sensor signal.

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