20kw Electric PTC Heater
Increased electric vehicle rang results in less engine heat and thus to higher heating requirements.
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.

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 |
PTC electric heater consists of PTC heating components, a controller, and internal pipes.
The heating components are installed in an integrated brazed water tank, and the coolant flows through the high-precision manifold in the brazed water tank to achieve heat absorption and circulation.
The controller circuit board is fixed in the injection molded housing with screws, and the connector is directly connected to the circuit board.



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.
