Understand battery insulators

In today's rapid development of battery technology, battery insulators, as a key component to ensure the safe and stable operation of batteries, have gradually received more attention. Although it seems insignificant, it plays an irreplaceable role in battery performance and safety.

A battery insulator, in essence, is a material that prevents the passage of current and can effectively isolate the conductors of different potentials inside the battery. In the battery, the cell is closely arranged, the positive and negative potentials are different, and once the positive and negative electrodes accidentally contact, it will cause a short circuit, resulting in serious consequences such as overheating, fire and even explosion of the battery. The battery insulator is like a strong barrier to prevent this dangerous situation from happening and ensure the normal operation of the battery.

There are many kinds of common battery insulation materials. Gas insulation materials such as air and nitrogen are often used inside closed battery packs. They not only have stable permittivity, minimal medium loss, but also have self-recovery ability, which can effectively prevent the external environment from affecting the battery. Liquid insulation material, that is, insulating oil, is mainly used to fill the void, improve dielectric properties, in the high power discharge, its excellent heat capacity and heat conduction performance can maintain the temperature stability of the battery module; Solid insulating materials are divided into inorganic and organic two categories, inorganic such as mica, electric porcelain, high temperature resistance but poor processing performance, organic like insulating paint, plastic, flexible and easy to process, but easy to age and poor heat resistance, they can provide mechanical support while isolating conductors. In addition, new materials such as powder coatings, high-shear insulation materials, and high-temperature resistant polymers are also emerging, providing more options for battery insulation.

With the booming development of new energy vehicles and energy storage industries, the requirements for battery performance and safety are increasing, and battery insulators are also constantly innovating and developing. In the future, it will move towards higher pressure resistance, better thermal stability, stronger mechanical strength and better durability to meet the growing market demand. Although the battery insulator is small, it is crucial to the development of battery technology and promotes the continuous progress of new energy applications.