Recently, the British start-up Hydrohertz unveiled its innovative Dectravalve multi-zone intelligent liquid cooling system, a breakthrough that has received validation from the University of Warwick. Traditional battery cooling systems tend to regard the entire battery pack as a single thermal zone. This approach often results in inconsistent cell temperatures during rapid charging, with temperature disparities commonly ranging from 8°C to 15°C. Consequently, the Battery Management System (BMS) is compelled to restrict the charging power to prevent overheating.

In contrast, the Dectravalve system boasts a revolutionary design. It enables independent control of up to four zones via a single coolant inlet, eliminating the necessity for multiple actuator valves or intricate piping systems.

Tests have demonstrated that under 350kW fast-charging conditions, this system can slash the charging time of a 100kWh lithium iron phosphate battery from 30 minutes to a mere 10 minutes. Furthermore, the maximum temperature of the battery pack remains below 44.5°C, with an internal temperature difference of just 2.6°C. Simultaneously, this advancement leads to a 10% increase in driving range and enhances the overall battery lifespan.