What Is a PTC Coolant Heater and Why Is It Essential for Electric Commercial Vehicles?

Introduction

Unlike conventional diesel vehicles, electric commercial vehicles require dedicated thermal management systems to ensure battery performance, cabin comfort, and operational reliability.

One of the most critical components is the PTC Coolant Heater.

                        What Is a PTC Coolant Heater?

A PTC (Positive Temperature Coefficient) coolant heater converts electrical energy into heat and transfers it to the coolant circuit.

Applications:

· Battery Heating

· Cabin Heating

· Defrosting

· Regenerative Energy Management

Why Do Electric Commercial Vehicles Need PTC Heaters?

Problems caused by low temperatures:

· Reduced battery capacity

· Reduced charging efficiency

· Limited regenerative braking

· Cabin comfort issues

Benefits of High-Voltage PTC Heaters
· Fast heating 
· High efficiency 
· Intelligent CAN control 
· Maintenance-free operation 
· High-voltage compatibility 

EVLINK Solution

EVLINK high-voltage PTC coolant heaters support:

· 400V–1100V

· 3kW–35kW

· CAN communication

· IP67 protection