Hydroelectric Defrosting Unit For Ev Truck

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Hydroelectric Defrosting Unit for EV Truck

 

A water-electric integrated defrost unit (or a liquid-electric integrated radiator) is a composite defrosting/heating device that combines liquid circulation heating (usually using engine coolant) and a PTC electric heating element. Its principle is to use the engine coolant temperature for initial heat exchange; if insufficient, the PTC instant heating module is activated for rapid heating, and a forced-fan fan enables rapid defrosting and heating. It is commonly used in gasoline-powered vehicles or new energy vehicles. 

 

OE NO.	ZD2721
Rated voltage of the electric heating device	DC600V
Motor Power	180W
Voltage Range	DC520V-DC680V
Motor rated voltage	DC24V
Nominal heat release	4kw±10% (under the conditions of electric heating device voltage DC600V and inlet air temperature 20℃)
Ambient temperature	-40℃~+50℃
Rated power of the fan	180w±10%
Fan rated current	≤8A

 

 

This device generates hot air through the coordinated operation of two heat sources, which is then blown towards the glass or interior by a fan:

 

Water Heating Component (Liquid):

 

Utilizes the waste heat from the circulating coolant in the car engine. The high-temperature coolant flows through the internal liquid radiator, and the cool air blown by the fan absorbs the heat from the water, becoming hot air.

 

Electric Heating Component (Electric):

 

Features a built-in PTC electric heating element. During initial vehicle startup, when the water temperature is low, or in extremely cold environments, the PTC quickly generates heat, exchanging heat with the air through its fins to compensate for the insufficient heat from the water heating system.

 

Coordinated Operation Mode:

 

The two heat sources can automatically switch or operate simultaneously based on the water temperature. Once the target water temperature is reached, the electric heating can reduce its power or be turned off to save energy.

 

 

 

 

PTC electric heating components are equipped with two-stage thermostat (90 degree normally closed thermostat connected in series with 150 degree manual reset thermostat)

Wind control mode: high-speed fan, high-speed line and low-speed line colleagues connected to DC24V; low-speed fan, low-speed line connected to DC24V
Lead length outside the shell: 500mm±50mm
 

The outer loop filter is welded in the middle of the bottom surface
 

The electrical connector adopts a waterproof connector, and the wiring harness end of the connector is equipped with a dust-proof sheath
 

Electrical wires should have flame-retardant properties and good insulation properties, and use flame-retardant wires with a temperature resistance of not less than 125°C.

 

Traditional internal combustion engine vehicles: Buses, trucks, and special vehicles, used for panoramic windshield defrosting or auxiliary cab heating.

 

New energy/hybrid vehicles: In hybrid mode, since the engine is not constantly running, the integrated hydroelectric structure ensures a stable heat source supply under any power condition.

 

Construction machinery: Excavators, cranes, etc., for defogging and defrosting windows in cold outdoor operating environments.

 

 

 

 

The integrated hydroelectric defroster is more than a simple addition of functions; it's a systematic innovation focused on energy conservation and user experience. It precisely addresses the biggest pain point of electric vehicles in cold climates-reduced range. Through ingenious engineering, it transforms previously wasted engine heat into a valuable source of warmth.

 

For buyers, this means:

 

Longer winter range and reduced charging anxiety.

 

Fast cabin heating for improved comfort and safety.

 

Lower overall cost of ownership. While the initial purchase price is slightly higher, the savings in electricity bills are significant.

 

 

 

 

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