Electric and hybrid vehicles rely heavily on thermal management systems. The Auxiliary Cooling Pump is essential in regulating multiple thermal loops, including battery packs, inverter modules, and onboard chargers.

In EV platforms, multiple auxiliary pumps may be installed:

Battery cooling loop pump

Power electronics cooling pump

Cabin thermal pump support

Typical EV Auxiliary Cooling Pump specifications:

Voltage: 12V or 48V systems

Flow rate: 20–100 L/min

Thermal range control: -30°C to 60°C coolant operation

Power: 50W–300W

These pumps are controlled via CAN bus communication, allowing real-time modulation based on battery state-of-charge (SOC), ambient temperature, and driving load.

Battery systems generally require strict thermal stability:

Optimal battery temperature: 25°C–40°C

Emergency cooling activation threshold: >45°C

Without auxiliary circulation, thermal imbalance may reduce battery efficiency and accelerate degradation.