Introduction
The OWP-BL43-200 Electric Coolant Pump is engineered to deliver reliable, high-performance thermal management for Lithium-ion Battery Energy Storage Systems (BESS). Built with automotive-grade components and advanced protective features, this pump ensures stable operation in extreme environments while optimizing energy efficiency—making it the ideal choice for energy storage cooling applications.
Core Advantages
- Precision Flow Control: Equipped with constant flow regulation technology, the pump maintains consistent liquid circulation to support uniform battery cooling, preventing overheating and extending battery lifespan.
- Comprehensive Protection Mechanisms: Features reverse polarity protection, dry running protection, over-voltage/over-current safeguards, and overload/over-temperature protection—minimizing downtime and ensuring long-term reliability.
- Efficient & Durable Design: Adopts a single-stage centrifugal structure with magnetic force transmission (shield pump design) and a high-efficiency brushless DC motor. Professional electromagnetic theory verification boosts motor efficiency by 3-5% compared to competitors, while the brushless design reduces power consumption and delivers a service life exceeding 20,000 hours.
- Optimized Hydraulic Performance: Hydraulic components (impeller and volute) undergo professional software simulation calculations to achieve optimal matching, enhancing hydraulic efficiency for superior heat dissipation.
- Extreme Environment Adaptability: Constructed with automotive-grade electronic components, the pump operates seamlessly in working temperatures ranging from -40℃ to +85℃ (-40°F to +185°F) and humidity up to 90%, with an IP68 protection rating for dust and water resistance.
Technical Specifications
| Parameter |
Details |
| Power Input |
24VDC (18-32VDC) |
| Rated Power |
250W |
| Rated Flow Rate |
2800L/H @ H=16M |
| Maximum Flow Rate |
4800L/H |
| Maximum Lift Head |
20M |
| Working Temperature Range |
-40℃ to +85℃ (-40°F to +185°F) |
| Medium Liquid Temperature |
-40℃ to +85℃ (-40°F to +185°F) |
| Working Ambient Temperature |
-40℃ to +85℃ (-40°F to +185°F), Humidity ≤90% |
| Outlet Diameter |
38mm (1.5 inches) |
| IP Rating |
IP68 |
| Noise Level |
≤60dB |
| Service Life |
>20,000 hours |
| System Pressure |
-0.5-2.5 Bar (at 100℃/212°F) |
| Driving Motor |
Brushless DC Motor |
| Driving Electromagnet |
Nylon plastic capsulated magnet |
Application Focus: Lithium-Ion Battery Energy Storage Systems (BESS)
Lithium-ion batteries in energy storage systems generate significant heat during charging/discharging cycles, which can degrade performance and pose safety risks without effective thermal management. The OWP-BL43-200 addresses this critical need by providing efficient, consistent coolant circulation:
- Removes excess heat from battery modules to maintain optimal operating temperatures, preserving capacity and cycle life.
- Adapts to dynamic load changes in BESS with stable flow control, ensuring reliable cooling during peak demand.
- Withstands the harsh operating conditions of energy storage installations (indoor/outdoor, temperature fluctuations) thanks to IP68 protection and wide temperature tolerance.
- Reduces energy consumption via high-efficiency motor design, aligning with the sustainability goals of modern energy storage projects.
Whether for utility-scale BESS, commercial energy storage systems, or industrial battery banks, the OWP-BL43-200 Electric Coolant Pump delivers the performance, durability, and protection required for critical thermal management applications.
Performance Curve

Overall Size

