Electric Vehicle Coolant Pump 12 Volt Coolant Pump Automotive
Product Description
Our EV Coolant Pump, also known as electric automotive water pump and battery coolant electrical pump, is a core component for new energy vehicle battery thermal management systems (BTMS), electric motor cooling, inverter and power electronics cooling circuits.
Different from traditional belt-driven mechanical pumps, our brushless electric coolant pump runs independently of motor RPM, supporting intelligent variable speed control via PWM / LIN / CAN signal. It dynamically adjusts coolant flow on demand to maintain the battery pack within the optimal working temperature range during charging, discharging and high-load operation, effectively preventing overheating, thermal runaway and uneven temperature distribution, extending battery cycle life and improving vehicle driving range and fast-charging performance.
Built with a sealed canned-motor structure, this **battery coolant electrical pump** features low noise, low vibration, high efficiency and long service life. It reaches high waterproof & dustproof grade, with comprehensive protection functions including dry-run protection, locked-rotor protection, over-voltage, under-voltage and reverse polarity protection, adapting to harsh working conditions of electric passenger cars, electric buses, electric heavy trucks and fuel cell vehicles.
Our electric automotive water pumps cover multiple voltage specifications and flow options, supporting customized interfaces, mounting structures and communication protocols for OE manufacturers and system integrators. Strictly validated under automotive-grade reliability standards, these EV coolant pumps deliver stable, consistent coolant circulation for BTMS, HVAC and auxiliary cooling loops, helping you build safer, more efficient and more reliable electric vehicle thermal management solutions.
Contact us today to get technical datasheets, sample testing support and customized solution for your battery coolant electrical pump project.
Product Parameter
The electric water pump primarily consists of a brushless motor, an impeller, a pump housing, and an electronic control board.
The electronic control board receives signals from the Vehicle Control Unit (VCU) or temperature sensors to drive the brushless motor, which in turn rotates the impeller. The impeller circulates coolant through the cooling circuits for the electronic control unit and the motor, thereby dissipating heat. The system adjusts the motor speed based on real-time component temperatures—thereby modulating coolant flow—to achieve on-demand cooling; the motor runs at low speeds or stops completely when temperatures are low, resulting in energy savings.
Electronic Water Pump Working Principle
| 1 | product name | electronic water pump |
| 2 | product model | 02.03.732.3405 |
| 3 | Rated voltage | DC24V |
| 4 | Woking voltage range | DC18V～32V |
| 5 | Rated current | ≤25.5A |
| 6 | power | 600W |
| 7 | Rated flow | ≥3500L/h@24m |
| 8 | Max head | ≥27m |
Performance Parameter
|
1 |
Lifetime |
≥20000H |
|
2 |
Waterproof level |
IP98 |
|
3 |
Color |
black |
|
4 |
Environmental protection grade |
Complies with RoHS environmental requirements. |
|
5 |
Frame material |
ADC12、PPS+GF30
|
|
6 |
noise |
≤60db |
|
7 |
Sealing performance |
Test pressure: 350 kPa; test duration: 5 s; leakage: ≤80 Pa |
|
8 |
Working Principle |
Centrifugal pump |
|
9 |
Application |
Vehicle water circulation cooling system |
Performance Curve
Structural Composition
This series of EV Circulation Pump features a canned pump design driven by a brushless motor, with the following main components:
1. A DC brushless motor, comprising a rotor assembly (including the impeller assembly) and a stator housing assembly (including the isolation sleeve and rear bearing housing assembly).
2. A controller (PCB assembly) for communicating with the main control unit and controlling the DC brushless motor.
3. A pump cover for connecting to the vehicle, engine, and cooling system.
4. A brushless motor rear cover, including a wiring assembly for connection to the vehicle.
Application
