W04 Necessary conditions for electric heaters
The 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.
Product function
The main functions of the integrated circuit water heating heater are:
- Control function: The heater control mode is power control and temperature control;
- Heating function: Electrical energy conversion to thermal energy;
- Interface function: Heating module and control module energy input, signal module input, grounding,water inlet and water outlet .
Necessary conditions for heater:
(1)The heater is controlled by CAN communication
(2)High voltage power supply
(3)Low voltage power supply (BATT) or Kl15 (ignition switch voltage), Kl31 (GND)
(4)The heater needs to set a high voltage interlock circuit
(5)The vehicle must be equipped with an insulation monitoring device to monitor:
Over (under) voltage protection
Short circuit protection (current-limiting fuse in distribution box)
Leakage protection
Interlock response
(6)High voltage electric heater must be equipped with 30A current-limiting fuse
(7)It must be ensured that the high voltage power supply has no reverse polarity
(8)The vehicle needs to be powered off when overvoltage occurs
(9)High voltage input should be precharged
(10)The high voltage input should be equipped with a relay, when a serious fault occurs, the high voltage can be cut off without affecting the safety of the whole vehicle.
