High-Flow PWM Speed Control Electric Coolant Pump OWP-BL43-450T: Thermal Management Solution for Lithium-Ion Energy Storage Systems

The OWP-BL43-450T Electric Coolant Pump is a high-performance thermal management component tailored for lithium-ion energy storage systems, delivering precise and efficient fluid circulation to regulate battery temperature. Integrating permanent magnet brushless technology, PWM speed regulation, and IP68 waterproof protection, this pump meets the stringent reliability and adaptability requirements of the energy storage industry. Its robust design ensures stable operation under extreme temperature conditions, while advanced protection mechanisms and fault feedback capabilities enhance system safety and maintain optimal battery performance.

• Closed Impeller Design: The precision-engineered closed impeller minimizes internal fluid leakage, achieving high pumping efficiency and low noise emission (≤60dB), which is critical for maintaining a quiet operating environment in energy storage facilities.
• Permanent Magnet Brushless Configuration: Combines compact dimensions with low power consumption, optimizing installation space in energy storage cabinets and reducing long-term energy costs without compromising flow capacity.
• Long-Life Shaft Assembly: Utilizes ultra-durable friction pair materials for the shaft system, directly supporting the pump’s extended service life of over 20,000 hours in continuous operation, aligning with the long-term reliability needs of energy storage systems.
• Centrifugal & Shielded Structure: Isolates the motor from the cooling medium to prevent contamination and leakage, ensuring clean and stable fluid circulation that protects sensitive battery components.
• PWM Duty Cycle Speed Regulation: Enables flexible flow adjustment through PWM signals, allowing precise matching of cooling demand with battery operating conditions, thus optimizing thermal management efficiency.
• Comprehensive Protection & Fault Feedback: Equipped with reverse polarity, overvoltage, overcurrent, dry running, and overtemperature protection, plus high/low-level fault feedback signals, enabling real-time system monitoring and timely troubleshooting to avoid equipment damage.

Head-Flow Curve

PWM Speed Control & Fault feedback

The OWP-BL43-450T Electric Coolant Pump is specifically optimized for thermal management of lithium-ion energy storage systems, where precise temperature control is vital for battery safety, performance, and lifespan. Its 6000L/H rated flow rate (at 8M head) and 9000L/H maximum flow ensure efficient circulation of cooling media—including glycol-water mixtures, dielectric oil, and electronic fluorinated solutions—to dissipate heat generated during battery charging and discharging. The 24VDC wide voltage input (18-32VDC) adapts to the power supply characteristics of energy storage systems, while the 38mm outlet diameter facilitates large-volume fluid transfer. With PWM speed regulation, the pump can dynamically adjust flow based on real-time battery temperature, preventing overheating or unnecessary energy consumption. The IP68 waterproof rating and -40℃ to 85℃ medium temperature range enable reliable operation in harsh indoor and outdoor storage environments. Equipped with fault feedback signals, the OWP-BL43-450T supports intelligent system monitoring, making it an ideal core component for lithium-ion energy storage system thermal management, ensuring stable and safe operation of energy storage facilities.

Dimensional Drawing