The application status of silicone defoamer in the field of new energy vehicle batteries is as follows:


In the preparation of battery slurry
Applied to positive slurry: In the production of lithium-ion batteries, bubbles are generated during the preparation of positive slurry due to air entrain during the mixing process and gas release from chemical reactions. Silicone defoaming agent because of its excellent heat resistance and chemical stability, can effectively reduce the surface tension of the liquid, so that the bubble quickly burst and release, but also maintain good dispersion in the slurry, does not affect the viscosity and fluidity of the slurry, so as to improve the uniformity of the slurry, to ensure the adhesion when coating, to improve the battery charge and discharge efficiency and cycle life is crucial.

Applied to negative slurry: The negative slurry preparation process will also appear bubble problems, silicone defoaming agent can prevent bubbles from affecting the performance of the slurry, ensure the quality of the negative material and the overall performance of the battery, such as ensuring the uniform distribution of the negative material inside the battery, conducive to electron conduction and ion embedding out.
In other aspects of battery production
Electrolyte production: The electrolyte may produce bubbles during the production and filling process, and the presence of bubbles will affect the accuracy of the injection amount of the electrolyte, as well as the ion transport channel inside the battery. Silicone defoamer can quickly defoamer, ensure the quality and performance of the electrolyte, help maintain the stable charge and discharge of the battery, improve the energy density and cycle stability of the battery.


Battery assembly sealing link: In the battery module assembly process, the sealant and other materials used may cause bubbles due to stirring, mixing and other operations. Silicone defoamer can eliminate these bubbles, so that the sealant can better play a sealing role, prevent moisture, air, etc., from entering the battery, improve the safety and service life of the battery.

In the battery thermal management system
Coolant defoaming: The coolant in the new energy vehicle battery thermal management system may produce bubbles during the circulation process, affecting the heat dissipation effect. Silicone defoamer can be added to the coolant to eliminate bubbles in time, ensure that the coolant can efficiently transfer heat, maintain the battery to work within the appropriate temperature range, prevent the battery from overheating, and improve the performance and safety of the battery.

Thermal potting adhesive defoaming: When the silicone thermal potting adhesive fills the gap between the battery module and the heat dissipation structure, if there are bubbles, the thermal conductivity will be reduced. Silicone defoaming agent can eliminate the bubbles in the potting adhesive, so that the potting adhesive can better fill the gap, improve the heat transfer efficiency, and quickly dissipate the heat generated by the battery.
In short, silicone defoamer, with its excellent performance, plays an important role in multiple links of new energy vehicle battery production, and with the continuous development of the new energy vehicle industry, its application will be more and more extensive and in-depth.