Heavy-Duty PWM Electric Coolant Pump for Electric Dump Truck Battery Thermal Management in Construction Machinery

The OWP-BL43-450T Electric Coolant Pump is a rugged, high-performance thermal management component designed to address the extreme heat dissipation needs of battery systems in electric dump trucks—core equipment in the construction machinery industry. Engineered to withstand the harsh operating conditions of construction sites, including heavy vibrations, dust, and temperature fluctuations, this pump ensures consistent cooling for high-capacity batteries, supporting reliable and continuous operation of electric dump trucks in demanding work environments.

• Closed Impeller Design: Optimizes fluid flow efficiency by minimizing energy loss through turbulent flow, while the enclosed structure contributes to the pump’s ≤60dB noise control—suitable for both urban construction zones and industrial job sites.
• Permanent Magnet Brushless Motor: Features a compact profile and low 250W rated power consumption, enabling easy integration into the limited space of electric dump truck battery compartments and reducing parasitic power draw from the battery system.
• Ultra-Long-Life Shaft System: Adopts high-wear-resistant friction pair materials, ensuring a service life exceeding 20,000 hours and reducing maintenance frequency for construction machinery that operates long hours under heavy loads.
• Centrifugal & Shielded Construction: Isolates the motor from cooling media to prevent contamination by dust, debris, or corrosive substances common in construction environments, enhancing operational reliability and durability.
• PWM Duty Cycle Speed Control: Allows precise adjustment of flow rate (from 6000L/H rated to 9000L/H max) based on real-time battery heat generation—critical for adapting to varying workloads (e.g., loading, hauling, idling) in construction applications.
• Comprehensive Protection Mechanisms: Integrates reverse polarity, overvoltage, overcurrent, dry-run, and overtemperature protection to safeguard the pump and battery pack from damage caused by harsh operating conditions or electrical anomalies.

Performance Curve

Speed Control Mode & Error Feedback Signal

Dimensions

The OWP-BL43-450T Electric Coolant Pump is specifically tailored for battery thermal management in electric dump trucks, a critical application in the construction machinery industry where battery performance directly impacts work efficiency and operational safety. With a maximum flow rate of 9000L/H and 11M lift head, the pump efficiently circulates compatible cooling media (50-60% glycol-water mixture, dielectric oil, electronic fluorinated solution) to dissipate heat from high-density battery packs, preventing overheating during prolonged heavy-load operation (e.g., transporting construction materials). Its wide medium temperature range (-40℃ to 85℃) adapts to extreme weather conditions—from freezing cold to scorching heat—common in outdoor construction sites. The IP68 protection grade ensures complete dust and water resistance, while the PWM speed control and high/low-level fault feedback signal enable seamless integration with the dump truck’s central control system for real-time monitoring. This model’s rugged design, low power consumption, and long service life make it an indispensable component for enhancing the reliability, efficiency, and lifespan of electric dump truck battery systems in construction machinery.