Fuel Cell Hydrogen Circulation Pump WDE-C008-H 60-120kW Long Life Bearing -40C Ice Breaking Start

Fuel Cell Hydrogen Circulation Pump WDE-C008-H for 60~120kW Systems Water Vapor Resistant Long Life Bearing -40C Ice-Breaking Start Reliable Operation Over Full Power Range

Quick Detail:

• High-performance hydrogen circulation pump developed for the hydrogen recirculation system of proton exchange membrane fuel cell (PEMFC)
• Core function: re-pressurizes the unreacted hydrogen at the stack anode and recirculates it to the stack hydrogen inlet, improving hydrogen utilization
• Described as the "pacemaker" of the fuel cell system
• Compared with the ejector solution, the hydrogen circulation pump enables stable operation over the full power range of the fuel cell system (from low to high power), with more reliable operation and more flexible control
• Roots type technology, displacement 200cc
• Water-vapor-resistant long-life bearing, repeated start-stop >=500,000 times
• Proprietary ultra-low-temperature ice-breaking technology, enabling ice-breaking start at -40C ambient temperature with an ice-breaking start time of <=15s
• Product has undergone 6000h loaded hydrogen testing and comprehensive environmental, structural, electrical and life reliability tests
• Volume flow: >=750L/min @ 7000rpm (air @ 25C)
• Protection class: IP67; Working ambient temperature: -40C~+85C; Designed life: >=6000h

Description:

In a fuel cell system, the hydrogen at the stack anode cannot be completely reacted in a single pass; usually 70%~90% of the hydrogen is consumed, and the remaining hydrogen is discharged with the exhaust gas. Direct discharge would cause serious fuel waste and economic loss. The role of the hydrogen circulation pump is to re-pressurize the unreacted hydrogen at the stack anode outlet and recirculate it to the stack hydrogen inlet, realizing hydrogen recirculation and greatly improving hydrogen utilization. The hydrogen circulation pump is described as the "pacemaker" of the fuel cell system.

Compared with the ejector solution, the hydrogen circulation pump has significant advantages: the ejector has poor ejection performance under low-power stack conditions and is difficult to cover the full power range; the hydrogen circulation pump, by actively pressurizing through the motor, can provide a stable and controllable hydrogen circulation flow over the full power range (from idle to rated power), with more reliable operation and more flexible control, especially suitable for vehicle conditions with high dynamic response requirements.

The WDE-C008 hydrogen circulation pump adopts a Roots type technical route and consists of three parts: controller, motor and pump body (the motor and pump body are integrated). The controller integrates multiple protection functions, including over-current, over-voltage, over-temperature, short circuit, locked rotor and stall protections, ensuring timely and effective protection under various abnormal working conditions. Core highlights include:

Ultra-low-temperature ice-breaking start: after the fuel cell system shuts down in a severe cold environment, ice may form inside the hydrogen circulation pump and lock the rotor. The proprietary ultra-low-temperature ice-breaking technology enables ice-breaking start at -40C ambient temperature with an ice-breaking start time of <=15s. The controller drives the motor to vibrate at high frequency through a specific algorithm, breaking up the internal ice to achieve low-temperature start. This technology solves the pain point of cold start of fuel cells in the severe cold winter regions of the north.

Long life and high reliability: the working medium of the hydrogen circulation pump is high-temperature high-humidity hydrogen (containing a large amount of water vapor), which places extremely high requirements on the water-vapor resistance of the bearing. The company uses a water-vapor-resistant long-life bearing with repeated start-stop >=500,000 times. The product has undergone 6000h loaded hydrogen testing and comprehensive environmental, structural, electrical and life reliability tests. The designed life is >=6000h.

High cleanliness and airtightness: metal particle size <=100um, airtightness (nitrogen) reaching 3x10^-7 Pa.m3/s.

The product has passed IATF16949 certification and complies with the QC/T 1208-2024 industry standard "Hydrogen Circulation Pump for Fuel Cell Engines". It is now in mass supply.

Specifications:

Electrical / Optical Characteristics (Ta=25C +/-3C). See product specification image.

Applications:

This product is widely used in the hydrogen recirculation circuit of proton exchange membrane fuel cell (PEMFC) systems, specifically including:

• Hydrogen fuel commercial vehicles (heavy trucks, city buses, logistics vehicles, cold-chain logistics vehicles)
• Hydrogen fuel passenger vehicles (sedans, SUVs)
• Stationary fuel cell power stations (backup power, distributed energy systems)
• Hydrogen fuel cell ships
• Fuel cell forklifts and port material handling equipment

Company Advantages:

Shanghai Yibaijia Hydrogen Energy Technology Co., Ltd., as a professional hydrogen energy parts supply platform, distributes the WDE-C008 hydrogen circulation pump dedicated to fuel cells. The company's products have passed IATF16949 certification, and its self-developed hydrogen circulation pump has a domestic market share of more than 50% in the field of large-displacement hydrogen pumps. The company team has more than 10 years of experience in the hydrogen energy and electric drive industry and can provide full-process technical support from product selection and system matching to installation and commissioning.

FAQ

Q1: Can you provide samples for testing?
A: Yes, we support sample orders for vehicle installation testing and performance verification, and also accept mixed-model sample orders.

Q2: What is the delivery lead time?
A: Sample orders usually take 5-7 working days; bulk orders (depending on order quantity) generally take 15-30 working days.

Q3: Is there a minimum order quantity (MOQ) limit?
A: There is no strict MOQ limit; 3-piece sample trial orders are supported, and bulk order prices are more favorable.

Q4: What role does the hydrogen circulation pump play in the fuel cell system?
A: The hydrogen circulation pump re-pressurizes the unreacted hydrogen at the stack anode outlet and recirculates it to the stack hydrogen inlet, realizing hydrogen recirculation and greatly improving hydrogen utilization. It is described as the "pacemaker" of the fuel cell system.

Q5: What are the advantages of the hydrogen circulation pump over the ejector?
A: The ejector has poor ejection performance under low-power stack conditions and is difficult to cover the full power range; the hydrogen circulation pump, by actively pressurizing through the motor, can provide a stable and controllable hydrogen circulation flow over the full power range (from idle to rated power), with more reliable operation and more flexible control, especially suitable for vehicle conditions with high dynamic response requirements.

Q6: How good is the low-temperature start capability of the hydrogen circulation pump?
A: The proprietary ultra-low-temperature ice-breaking technology enables ice-breaking start at -40C ambient temperature with an ice-breaking start time of <=15s. The controller drives the motor to vibrate at high frequency through a specific algorithm, breaking up the internal ice to achieve low-temperature start.

Q7: What is the life of the hydrogen circulation pump?
A: Designed life >=6000h. The product has undergone 6000h loaded hydrogen testing and comprehensive environmental, structural, electrical and life reliability tests. The bearing is a water-vapor-resistant long-life bearing with repeated start-stop >=500,000 times.

Q8: How to handle product failures?
A: We implement a strict quality control system, with an out-of-factory defect rate below 0.2%. During the warranty period, small batches of defective products will be replaced with new ones in the next order; batch quality problems will be negotiated for repair or replacement to ensure customer rights.