6kw Battery Cabin Coolant Heater

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6kw Battery Cabin Coolant Heater

 

 

Electric Vehicle High Voltage PTC Heater can provide heat for the cockpit of new energy vehicles and meet the standard of safe defrosting and defogging. It also provides heat to other parts of the vehicle that require temperature regulation, such as the battery.

 

The main features of the integrated circuit water heater are:
- Control function: Temperature control mode is power control and temperature control.
- Heating function: electrical energy is converted into thermal energy.
-Connection functions: power supply from the heating unit and control unit, input from the signal unit, grounding, water inlet, and outlet.

 

Item	W04-1	W04-2(Without controller)	W04-3
Heating output	5kw, 6kw, 7kw, 8kw @10L/min,T_in 40℃
Rated voltage(VDC)	600V	600V	350V
Working voltage(VDC)	450-750	450-750	250-450
Impulse current(A)	≤30@750V	≤30@750V	≤45@450V
Controller low voltage	9-16 or 16-32V	--	9-16 or 16-32V
Control signal	CAN2.0B	NTC + temperature control switch	CAN2.0B
Control model	Gear (3th gear)  or PWM	--	Gear (3th gear)  or PWM
Heater dimension	310*144*107.5mm
Installation dimension	144*128*119
Joint dimension	D20*22 (waterproof ring) mm
Heater weight	＜2.1kg
High-voltage connector	JonHon  C10514N1-02-3-1
Low-voltage connectors	320Q60A1-LVC-4 (Haichen A02-ECC)

 

Product Size:

 

3.1 Soft start
PWM soft start mode, group soft start, each group starts sequentially, and staggers the peak value of the inrush current. There are 2 groups of IGBTs inside, the delay time between each group is 5~25S, and the soft start is completed within 25~50 seconds. The current waveform of the heater during soft start is as follows.

Full power soft start current-time trend graph

 

3.2 Power and temperature control
After the soft start is completed, the PTC heater will compare the actual water outlet temperature and the PTC heating power according to the outlet water temperature and the target power, and perform comprehensive adjustment of power and temperature. The specific heating control rules are as follows.

Target power = set power percentage * rated power;
Target temperature = set temperature.
The PTC heater has the following heating states.
State 1: The outlet water temperature is lower than the target temperature, and the PTC heater heats according to the target power.
State 2: When the outlet water temperature is higher than the target temperature, the heater automatically adjusts the heating power to achieve constant temperature control. The temperature control range is the target temperature +-3°C.

 

 

 

 

 

 

 

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