Dongfeng New Energy Power parts water pump assy 1307010-C3300(3971WDAR)

The pump adopts a brushless DC (BLDC) motor drive system, optimized for NEV energy efficiency and precise flow control. The BLDC motor operates at variable speeds (1000-5000 RPM) controlled by the NEV’s thermal management ECU, adjusting coolant flow rate (up to 80 L/min) in real time based on cooling demands (e.g., battery temperature, motor load). This variable-speed design reduces power consumption by up to 40% compared to fixed-speed mechanical pumps, directly contributing to extended NEV driving range. Additionally, the BLDC motor features a compact, lightweight design (motor weight ≤ 1.2kg) and low noise operation (≤ 50 dB at full load), minimizing NEV cabin noise and under-hood space occupancy

The pump’s internal structure is engineered to maximize cooling efficiency and reliability:

High-Flow Impeller: The impeller is precision-injected from glass fiber-reinforced polyamide (PA66+GF30), featuring a curved blade design that minimizes flow resistance and enhances hydraulic efficiency (≥ 75%). This design ensures consistent coolant pressure (up to 350 kPa) even at low motor speeds, preventing air pockets in the cooling circuit.

Leak-Proof Sealing: A mechanical seal (comprising carbon-graphite and ceramic faces) is integrated between the impeller and motor housing, providing a permanent, maintenance-free seal with a leak rate ≤ 1 mL/year. The seal is resistant to NEV coolant types (e.g., ethylene glycol-based, low-conductivity coolants) and operates reliably across a temperature range of -40°C to 125°C.

Heat-Dissipating Housing: The pump housing is made of die-cast aluminum alloy (ADC12) with external cooling fins, which dissipate heat generated by the BLDC motor—preventing motor overheating and ensuring stable performance during prolonged high-load operation (e.g., fast charging, high-speed driving)

Motor Components: The BLDC motor’s stator windings use class H insulation (180°C rated) to withstand high temperatures in NEV engine bays or battery enclosures. The rotor is made of high-strength neodymium magnets, ensuring consistent torque output and resistance to demagnetization (up to 150°C).

Housing & Impeller: As noted, the aluminum alloy housing offers excellent corrosion resistance (passing 500+ hours of salt spray testing per ISO 9227), while the PA66+GF30 impeller resists chemical degradation from coolants and UV exposure.

Bearings: High-precision ceramic or stainless steel ball bearings are used to reduce friction and extend service life—supporting up to 10,000 hours of continuous operation (equivalent to 300,000+ km of NEV driving)

This water pump assembly meets global NEV cooling system standards, including GB/T 18384 (Safety requirements for electric vehicles), ISO 12405 (Electric vehicle batteries—Performance and durability), and IATF 16949 (automotive quality management). Each unit undergoes comprehensive pre-shipment testing:

Performance Testing: Measuring flow rate, pressure, and power consumption across different motor speeds to ensure compliance with NEV cooling demands.

Leakage Testing: Pressurizing the pump to 1.5× maximum operating pressure (525 kPa) for 30 minutes to confirm no coolant leaks.

Durability Testing: Simulating 500,000+ on/off cycles and 10,000 hours of continuous operation under variable temperature and load conditions to ensure no component failure.

Environmental Testing: Exposing the pump to extreme temperatures (-40°C to 125°C), vibration (10-2000 Hz, 20 g acceleration), and humidity (95% RH at 40°C) to validate performance stability.

Backed by a 36-month manufacturer’s warranty, the assembly ensures reliable cooling for NEV critical components (batteries, motors, inverters) in urban commuting, long-distance driving, and fast-charging scenarios