ptc coolant heater supplier
The 20kw high voltage coolant heater is mainly used for heating the passenger compartment ,defrosting and removing fog on the window,or preheating battery thermal management system battery ,to meet the corresponding regulations, functional requirements.
This PTC coolant heater is suitable for pure electric/hybrid/fuel cell vehicles, mainly as the main heat source for in-vehicle temperature regulation. This PTC coolant heater is suitable for the vehicle's driving mode and parking mode. During the heating process, the PTC element effectively converts electrical energy into thermal energy, so this product has a faster heating effect than an internal combustion engine. At the same time, it can also be used for battery temperature regulation (heating to operating temperature) and the starting load of the fuel cell.
This PTC coolant heater adopts PTC technology to meet the safety requirements of passenger cars for high voltage. In addition, it can also meet the relevant environmental protection requirements of engine compartment components.

Power (KW) | 10KW | 15KW | 20KW |
Rated voltage(V) | 600V | 600V | 600V |
Supply voltage (V) | 450-750V | 450-750V | 450-750V |
Current consumption (A) | ≈17A | ≈25A | ≈33A |
Flow (L/h) | >1800 | >1800 | >1800 |
Weight (kg) | 8kg | 9kg | 10kg |
Installation size | 179x273 | 179x273 | 179x273 |
Control signal | Rocker switch hardwire control | Rocker switch hardwire control | Rocker switch hardwire control |



Products application
Battery Thermal Management
Battery Preheating:
In a low-temperature environment, the battery performance and range will be reduced. A 20kW electric heater can preheat the battery pack, so that it can work within the appropriate temperature range, prolonging the battery life and improving performance.
Battery heat preservation:
During vehicle travel or charging, it continuously insulates the battery pack, reduces heat loss from the battery, maintains its efficient working condition, and improves the stability and safety of the battery.
Battery Thermal Equalisation:
In a battery pack, the temperature of each cell may be inconsistent. The electric heater can work with the battery management system to heat the cells with lower temperatures to achieve temperature equalisation within the battery pack and optimise the overall performance of the battery.