Functional Description - Pressurized Coolant Bottle

The Battery Cooling system is designed to maintain a pre-set internal temperature and provide coolant flow to the High Voltage Battery components, not including engine, HVAC, and the Power Electronics. The Battery Cooling system is a low pressure (5 psi) system that uses an electric auxiliary coolant pump to force coolant through the Battery cooling loop.

The pressurized coolant bottle is equipped with a pressurized coolant bottle cap. This cap releases pressure is 34 kPa (5 psi). The pressure relief point is stamped on top of the cap. The cooling system operate at pressures of 34 kPa (5 psi) above atmospheric pressure. This results in a higher coolant boiling point allowing increased radiator cooling capacity. The cap contains a spring-loaded pressure relief valve. This valve opens when system pressure reaches 34 kPa (5 psi). A rubber gasket seals the cap to maintain vacuum during coolant cool-down and to prevent leakage when system is under pressure.