1. Transport coolant to complete heat transfer (core function)
Pipeline transportation of water ethylene glycol coolant, flowing through the heat exchanger and outer wall of the fuel cell stack, carrying away Joule heat generated by electrolyte charging and discharging; Transport high-temperature heat to external heat dissipation equipment and control the stack and electrolyte within the optimal working range of 25-35 ℃. High temperature can cause ion exchange membrane expansion, electrolyte deterioration, and decreased battery efficiency.
2. Balanced heat dissipation and reduced temperature difference
Reasonable pipeline flow channel layout, uniform distribution of coolant flow, avoiding local overheating of the fuel cell stack, controlling the temperature difference inside the module within 3 ℃, preventing premature aging of some fuel cells, and ensuring consistent output of the entire liquid flow battery.
3. Auxiliary heating in low-temperature environment
During low temperatures in winter, hot water circulates through pipelines to increase the temperature of the electrolyte, avoiding an increase in electrolyte viscosity and slower ion migration, and preventing a decrease in discharge power under low temperature conditions.
4. Ensure smooth circulation loop and reduce energy consumption
Smooth inner wall pipes reduce liquid flow resistance and lower power consumption of circulating water pumps; Corrosion resistant pipes resist the corrosion of cooling media, ensuring long-term operation without leakage and guaranteeing stable operation of the positive and negative electrode electrolyte circuits.
5. Extend equipment lifespan and enhance system safety
Control the electrolyte temperature not to exceed 45 ℃, suppress vanadium ion migration and membrane material aging, and extend the service life of the diaphragm and stack;
Take away heat to eliminate overheating hazards, avoid the risk of downtime caused by high temperatures, and adapt to long-term high-power operation of energy storage power plants.
