Auto EV Cooling 3 Way Heater Water Valve

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Auto EV Cooling 3 Way Heater Water Valve

 

 

The electronic three-way valve is a core electronically controlled flow-diverting component within the liquid-cooling thermal management system of new energy vehicles. It operates in conjunction with electronic water pumps, PTC heaters, HVAC units (for heating and defrosting), and battery cooling plates to regulate the flow path of the vehicle's coolant circulation system, thereby overcoming the limitations of traditional mechanical thermostats, such as the inability to achieve precise temperature control or switch between multiple circuits.

 

No	Parameter name	Values
1	Water valve internal leakage	≤20mL/min (water test), 30kPa pressure difference
2	Water valve external leakage	≤5mL/min (gas test), 340kPa (gauge pressure)
3	Mode switching response time	<10s
4	Control method	LIN
5	Standard operating voltage	24V
6	Operating voltage range	20V~30V
7	Lifespan	300,000 switch cycles

 

In actual vehicle operation, the system performs multiple temperature regulation functions. During rapid battery charging in summer, the valve opens the cooling circuit to dissipate heat, preventing performance degradation caused by high temperatures. In cold winter conditions, it isolates the external cooling lines and redirects waste heat from the motor to the battery and cabin, thereby reducing electric heater power consumption and extending driving range. When the defrosting or heating functions are activated, the system rapidly switches the coolant flow to supply heat to the integrated heating and defrosting unit, ensuring quick windshield defogging and defrosting.

 

 

Medium	50% ethylene glycol
Temperature	25℃
Outer diameter of the pipe	Φ25
Flow	5-50L/min

Compared to configurations using multiple independent two-way valves, a single electronic three-way valve streamlines the layout of vehicle coolant lines and connectors, saves chassis installation space, and reduces assembly and material costs for manufacturers. By utilizing precise coolant flow distribution logic, it enables vehicle-wide waste heat recovery and zoned thermal control, effectively lowering the thermal management system's energy consumption; it is an essential component in integrated thermal management solutions for new energy commercial vehicles and construction machinery.

 

The installation location diagram is shown below (allowed installation angles):

 

Connection requirements with the vehicle:

 

★ It is recommended to install rubber shock-absorbing pads at the bottom of the two M6 connection mounting holes, with a hardness of HA70~80.

 

In actual vehicle operation, the system performs multiple temperature regulation functions. During rapid battery charging in summer, the valve opens the cooling circuit to dissipate heat, preventing performance degradation caused by high temperatures. In cold winter conditions, it isolates the external cooling lines and redirects waste heat from the motor to the battery and cabin, thereby reducing electric heater power consumption and extending driving range. When the defrosting or heating functions are activated, the system rapidly switches the coolant flow to supply heat to the integrated heating and defrosting unit, ensuring quick windshield defogging and defrosting.

 

 

 

 

 

 

If you are interested in our electric 3-way valve, please submit an inquiry to us immediately. Our professional staff will contact you and recommend the most suitable products for your needs. We look forward to cooperating with you! We are eager to hear about your project details and are waiting for your inquiry. Start your inquiry now!

 

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