Battery plunger pump precision injection equipment

CY-ZYB-L electric plunger injection pump can be used for precise metering of various liquids, especially for lithium-ion battery electrolyte injection process. The equipment adopts rotary plunger metering method to achieve continuous precise metering of liquids.

Features：

1. Motor driven, rotary plunger pump body, equipped with control box and bracket;

2. The valve core is made of ceramic material, corrosion-resistant and with high metering accuracy;

3. Equipped with Teflon infusion pipeline, it can be used for various corrosive liquids;

4. Parameters such as speed and injection times can be set, and the single injection volume can be adjusted, which is suitable for various injection processes;

5. Equipped with weighing device and touch screen operation, it is convenient and easy to use.

Contact us :

If you are interested in our electric plunger injection pumpt, please contact us for more information and quotation.

Tel: 86 159 3625 3205

Email: zerlinda@zztainuo.com

Contact person: Zerlinda

WeChat: 86 159 3625 3205

Technical Specifications

Main accessories：

Application

Medicine，Electrolyte，Acid,Solvent,Dairy products,Glue,Reagent.

Application Cases《Main application of vacuum still boxes in soft-package lithium-ion batteries》

The application of electric plunger pumps in the production process of lithium-ion battery materials is concentrated in the process links such as slurry delivery, electrolyte injection, and additive injection. The following is a typical application process of electric plunger pumps in lithium battery materials:

1. Positive/negative electrode slurry delivery

During the manufacturing process of positive and negative electrodes of lithium-ion batteries, the slurry needs to be evenly coated on the current collector (such as copper foil or aluminum foil). Electric plunger pumps can stably deliver slurry to ensure uniform coating.

Process:

Slurry stirring: Fully mix the positive/negative active materials, conductive agents and binders in the mixing tank.

Filtration and pretreatment: The slurry passes through the filtration system to remove impurities and avoid blockage in the subsequent coating process.

Plunger pump delivery: The electric plunger pump stably delivers the slurry to the coating equipment.

Coating and drying: The slurry is evenly coated on the surface of the current collector, followed by drying and curing.

Features: The plunger pump can provide stable pressure and flow control to ensure uniform distribution of the slurry and improve the quality of the pole piece.

2. Electrolyte injection

Electrolyte injection is a key step in battery manufacturing, affecting the performance and life of the battery. Electric plunger pumps are used to accurately control the amount and speed of electrolyte injection.

Process:

Cell assembly: The coated and dried positive and negative electrode materials are wound or stacked with the diaphragm to assemble into a cell.

Evacuation: The cell is vacuumed before injection to remove the internal air and prevent bubbles from affecting the distribution of the electrolyte.

Plunger pump injection: The electric plunger pump accurately injects the electrolyte into the cell according to the set amount.

Stationary infiltration: After the injection is completed, the cell is left to stand to ensure that the electrolyte is fully penetrated and evenly distributed.

Packaging and sealing: After the injection is completed, the battery is packaged to ensure that the electrolyte does not leak.

Features: The high-precision injection of the plunger pump ensures uniform distribution of the electrolyte, reduces bubbles, and improves battery consistency and safety.

3. Additive injection

Adding specific additives to the electrolyte or slurry can improve battery performance, such as extending cycle life or increasing capacity. Electric plunger pumps are used for precise injection of trace additives.

Process:

Preparing electrolyte: During the preparation of electrolyte, additives are injected according to the formula requirements.

Plunger pump controls injection volume: The plunger pump accurately controls the dosage of each injection to ensure that the additives are evenly distributed throughout the solution.

Uniform mixing: The additives are fully mixed with the electrolyte or slurry to form a uniform formula liquid.

Features: The micro-control ability of the plunger pump ensures accurate dosage of additives, improves product consistency and process controllability.

4. Batching and transfer of positive and negative electrode slurries

During the slurry preparation process, electric plunger pumps are used to proportionally measure and transfer raw materials such as solvents and binders to ensure mixing accuracy.

Process:

Batch weighing: Weigh various types of powders and solutions in proportion according to the formula.

Plunger pump proportioning and delivery: The electric plunger pump delivers the binder or solvent to the mixing tank at the set flow rate and proportion.

Mixing and stirring: All materials are evenly mixed to ensure the consistency of the finished slurry.

Features: The plunger pump has high precision, ensuring accurate ratio of solvent and binder, improving the stability of slurry and coating effect.

5. Liquid injection or delivery under vacuum environment

Some lithium battery materials are produced in vacuum or inert gas environment to prevent moisture or oxidation of materials. Electric plunger pumps are effective in vacuum or closed systems.

Process:

Vacuum chamber preparation: Before liquid injection or slurry delivery, adjust the environment to vacuum or nitrogen protection state.

Plunger pump delivery: The plunger pump accurately delivers slurry or injects electrolyte in a sealed environment.

Sealing treatment: After the operation is completed, the battery cell is sealed to ensure that the electrolyte and slurry are not contaminated.

Features: Electric plunger pumps can adapt to low-pressure environments, ensure material purity, and avoid the influence of external impurities and bubbles.

Advantages of electric plunger pumps in lithium battery material applications

High-precision control: ensure the accuracy of liquid injection volume and slurry delivery, and improve battery consistency.

Good sealing: suitable for vacuum or inert gas protection application scenarios, reducing the possibility of oxidation or moisture.

Corrosion resistance: The pump body material can be selected from materials with high corrosion resistance to adapt to chemical substances such as electrolytes.

Long life and low maintenance: The pump body structure is simple and durable, suitable for long-term continuous work.

Through the above process, the electric plunger pump improves material quality control, improves production efficiency, and helps optimize battery performance during the transportation and processing of lithium battery materials.