New energy pure electric vehicles because there is no engine, can not use the engine waste heat as a warm air conditioning heat source, at the same time in the case of low temperature need to heat the battery pack to improve the low temperature range, so new energy vehicles use EV PTC heater to provide heat source for the car air conditioning system and battery heating system, its overall structure by the radiator (including PTC heating package), coolant flow channel, the main control board, high voltage connector, the overall structure consists of radiator (including PTC heating package), coolant runner, main control board, high voltage connector, low voltage connector and upper housing. It is a part of the thermal management system of new energy vehicles.
The new energy vehicle PTC coolant heater is a device that uses a PTC heating element to heat the vehicle coolant. Its main function is to provide heat for the vehicle in low temperature environment so that key components such as engine, motor and battery can operate normally.
The PTC heating element is a self-recovery type thermistor element with the characteristics of high efficiency, stability and reliability. When the electric current passes through the PTC heating element, a thermal effect is produced, which causes the surface temperature of the element to rise, achieving the purpose of heating the coolant. Compared with the traditional electric heater, PTC battery heater has the advantages of self-regulating power and stable temperature.
In the low temperature environment, PTC water heater adjusts the heating power and temperature by controlling the size of the current to keep the vehicle's coolant in the appropriate temperature range, ensuring the normal operation of key components such as the engine, motor and battery. At the same time, the PTC water heater has high heating efficiency, which can heat the coolant to the appropriate temperature in a short period of time, shorten the warm-up time of the vehicle and improve the comfort and safety of driving.
PTC water heater test items mainly include electrical performance test, EMC test and fluid performance test. The new energy laboratory of Unitech can test all items of PTC heaters.
Post time: Jun-25-2024
