The BLDC Coolant Pump OWP-BL43-426C is a high-performance, reliable solution specifically designed for the coolant circulation needs of Lithium-ion Battery Energy Storage Systems (BESS). In BESS, maintaining optimal battery temperature is critical to ensure long service life, stable performance, and safety. This pump efficiently circulates cooling media through the battery system, preventing overheating during charging, discharging, and standby operations—even in harsh environmental conditions. It adapts seamlessly to the dynamic thermal demands of BESS, whether in utility-scale energy storage facilities, commercial backup systems, or industrial energy management setups, ensuring consistent thermal regulation to protect battery cells from damage and optimize energy storage efficiency.

• Comprehensive Protection: Features reverse polarity protection, dry running protection, over-voltage/current protection, and overload/over-temperature protection, ensuring safe operation in BESS environments.
• Efficient & Durable: Equipped with a high-efficiency brushless DC motor, it reduces power consumption while delivering long service life (over 20000 hours), lowering maintenance costs for BESS operators.
• Advanced Design: Adopts single-stage centrifugal structure and magnetic force transmission (shield pump design), preventing media leakage and enhancing reliability.
• Wide Adaptability: Boasts a broad operating temperature range (-40℃ to +85℃) and compatibility with multiple cooling media, suitable for various BESS installation locations and thermal requirements.
• Precise Control: Supports PWM speed regulation and constant flow control, allowing precise adjustment of coolant circulation to match BESS’s real-time thermal needs, optimizing energy efficiency.

Flow Rate & Head Curve

Dimensional Drawings