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Why is anti-static powder coating used in the new energy industry
source：www.cnjindu.com | Release time：2026年09月19日1、 Scenario of power battery/energy storage system (main application)
1. Prevent static sparks, reduce the risk of thermal runaway, fire and explosion
Lithium battery cells and PACKs contain electrolytes (organic solvents, flammable) inside. During workshop assembly, cell transportation, charging and discharging processes, friction and peeling can generate static electricity.
If the metal shell is made of ordinary insulating powder, the charge cannot be released and continues to accumulate. When the static voltage is high enough, discharge sparks will be generated, igniting the evaporated electrolyte vapor and inducing thermal runaway.
The anti-static coating provides controllable surface resistance (generally ESD: 10 ⁶~10 ⁹ Ω), which slowly guides static electricity away without generating instantaneous high-voltage sparks.
2. Protect precision BMS and acquisition circuit boards from ESD breakdown
The PACK shell and energy storage cabinet are equipped with BMS, sampling chips, and relays inside. Instantaneous electrostatic discharge can penetrate semiconductor chips, causing battery management system failure, signal acquisition confusion, and triggering protection misoperation. Anti static coating prevents electrostatic discharge and protects electronic components.
3. Anti corrosion protection
There is moisture and salt spray in the environment of energy storage power stations and battery buildings (such as seaside energy storage stations), and metal cabinets/shells are prone to corrosion. Powder coating is dense and isolates water vapor corrosion; Outdoor energy storage cabinets generally use polyester anti-static powder, which balances weather resistance and anti-static properties.
4. Clean production requirements
Battery cleanroom, ordinary insulation coating static electricity will adsorb dust and metal particles. Dust adhering to the surface of battery cells can cause micro short circuits. Anti static coatings reduce dust adsorption and ensure production cleanliness.
2、 Photovoltaic industry
Inverter casing, combiner box, outdoor photovoltaic control cabinet: In outdoor environments, friction and sandstorms can easily generate static electricity; Internal circuit boards and power devices are sensitive to static electricity, and outdoor weather resistance is required. Polyester anti-static powder is preferred.
Photovoltaic workshop fixtures and material turnover racks: prevent static electricity from damaging photovoltaic cells, as static electricity can cause cell cracking and efficiency degradation.
3、 Wind power industry
Wind power converter cabin cabinet, electrical box inside tower:
Dry air in the cabin is prone to static electricity; Internal IGBT and control circuit board belong to precision power electronic devices, and static electricity can cause device damage; At the same time, there is dust in the cabin, and anti-static measures reduce dust adsorption.
4、 Compared to other anti-static coating solutions, the unique advantages of powder coatings
No VOC: The new energy battery workshop belongs to an explosion-proof environment, and the evaporation of liquid coating solvents poses an explosion hazard. Powder coatings do not contain solvents, ensuring safe production;
Dense and wear-resistant coating: The PACK shell and cabinet are not easily exposed during transportation and assembly, and once exposed, they will lose their anti-static effect;
One time film formation, good adhesion, easy to spray on large quantities of metal components.
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