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Electric 3 Way Valve
This electronic coolant valve (electronic water valve) is a core component of the battery thermal management system for new energy vehicles. It integrates a drive motor, position sensor, and mounting bracket to precisely control the on/off state of the coolant circuit and switch the direction of water flow. It realizes the distribution of cooling/heating flow between the battery pack, motor, electronic control, and air conditioning (HVAC) circuits, and is compatible with the thermal management systems of pure electric and hybrid vehicles.
Description
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Electric 3 Way Valve
Products Description

| Water valve internal leakage | ≤20mL/min (water test), 30kPa pressure difference |
| Water valve external leakage | ≤5mL/min (gas test), 340kPa (gauge pressure) |
| Mode switching response time | <10s |
| Control method | LIN |
| Standard operating voltage | 24V |
| Operating voltage range | 20V~30V |
| Lifespan | 300,000 switch cycles |
Products Design

Products application

Products advantage

1. Multi-channel flow switching: Three-channel pipe interface allows for water path switching, diversion, and merging. Coolant flow direction is switched according to vehicle VCU/BMS commands to meet the needs of multiple operating conditions, including battery cooling, battery preheating, motor cooling, and cabin heating.
2. Intelligent electronic control drive: Built-in actuator motor and position feedback sensor receive vehicle control signals, precisely adjust valve opening, and provide real-time valve position feedback, ensuring high control accuracy and rapid response.
3. Integrated mounting bracket: Matching custom metal mounting brackets allow for direct assembly at vehicle points, reducing pipe connections and simplifying vehicle assembly processes.
4. Reliable sealing and durability: Automotive-grade plastic valve body structure provides excellent sealing performance, resists coolant corrosion, withstands alternating high and low temperature environments, meets long-term vibration conditions in vehicles, and is compatible with ethylene glycol coolant.
5. Standard automotive connector: Dedicated automotive connectors interface with vehicle wiring harnesses, are vibration-resistant, prevent loosening, and ensure stable electrical connections.
Related products

The battery thermal management system is a core subsystem of new energy vehicles, primarily responsible for temperature control of the power battery to ensure it operates within a suitable temperature range. The three-channel electronic water valve is an actuator within the system, responsible for switching the flow of cooling water, allocating cooling/heating circuits, and working in conjunction with the water pump to complete the entire temperature control process.
Products FAQ
Q1: What is the function of the three-way electronic water valve?
A: As a core actuator in the thermal management system of new energy vehicles, it is mainly used to switch, divert, and isolate coolant circuits, enabling automatic switching between multiple operating conditions such as battery cooling, battery preheating, motor cooling, and cabin heating. It precisely distributes heat throughout the vehicle, ensuring the battery operates within its optimal temperature range.
Q2: What is the difference between a three-way valve and a regular two-way solenoid valve?
A: Two-way valves only support single-path on/off switching; this product has a three-channel structure, allowing a single valve to achieve multi-path switching, merging, and isolation without the need for multiple valves in parallel. This simplifies the vehicle's piping layout, reduces the overall BOM cost, and provides position feedback for enhanced control precision and system stability.
Q3: Does it support heat recovery?
A: Yes. The switchable circuit can redirect waste heat from the motor and electronic control system to the battery pack or cabin, achieving waste heat recovery and reducing PTC heater energy consumption, effectively improving the vehicle's range.
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