Understanding the role of electric coolant pumps in Electric Vehicles

In this chapter, we delve into the critical function of electric coolant pumps, which are a fundamental component of the thermal architecture of electric vehicles (EVs).

Electric coolant pumps manage the temperature of various parts of an EV. Liquid cooling and heating allow for accurate thermal control at a component level, from waste heat retrieval to pushing the boundaries at extreme temperatures and performance levels. We provide both low voltage and high voltage coolant pumps.

Our demonstration vehicle in this video uses a 24-volt centrifugal pump on the battery circuit. This pump, due to its low voltage, is capable of pumping water-glycol or dielectric oil-based coolants without generating excessive pressure, making it an efficient and suitable choice for the task.

High voltage coolant pumps for fuel cell circuits

In this video you will see how the fuel cell circuit employs high-voltage coolant pumps, representing the apex of current thermal management technology. These pumps function at the vehicle’s high voltage nominal level, lowering the dependence on DC-DC converters and high current on the 24-volt circuit. They are also fully controllable over the CAN BUS. This means precise flowrate control, with diagnostics, logging, and feedback.

Choosing the right electric coolant pumps for EV thermal management

The type of coolant pump technology implemented within an EV thermal management system depends on the fluid, temperature, flowrate, pressure, voltage level, and available communication options. As experts in thermal management systems, we will advise you on the suitable coolant pump for electric vehicles (EV), hybrid electric vehicles (HEV), and fuel cell electric vehicles (FCEVs). Please speak to a member of our team