Fuel Cell PTC Coolant Heater NPA NPH Series 5-200kW 80V 600V Dual Platform CAN Control

Fuel Cell Dedicated PTC Water Heater NPA/NPH Series Adapting to 5~200kW Systems 80V/600V Dual Platform Smart CAN Control Fast Cold-Start Auxiliary Heating IP67

Quick Detail:

• PTC water heater developed for the thermal management system of proton exchange membrane fuel cells (PEMFC)
• Core function: heats coolant in low-temperature environments, providing fast cold-start auxiliary heating for the fuel cell system
• Applicable power range: 5~200kW (covering passenger vehicles, commercial vehicles and stationary power stations)
• Two voltage platforms: 80V platform (NPA10A, 3kW) / 600V platform (NPH40A, 10kW)
• Working principle: PTC (positive temperature coefficient) heating technology - the resistance of the PTC element increases with temperature; after reaching the Curie point the resistance rises sharply and thermal power automatically drops, achieving self-limiting temperature and self-protection without additional temperature control devices
• Control method: CAN 2.0B communication, supporting 0~100% stepless power regulation
• Working temperature range: -40C ~ 85C (ambient) / -40C ~ 90C (coolant)
• Protection class: IP67 (NPA10A) / IP68 (NPH40A); Insulation class: H (180C)
• Applicable medium: 50% ethylene glycol + 50% deionized water
• Multiple smart protections: temperature sensor monitoring, PCB over-temperature protection, medium over-temperature protection, short-circuit protection, high-voltage interlock, power reverse connection protection, etc.

Description:

In a fuel cell system, the normal working temperature of the stack is usually 60C~80C. When starting in a low-temperature environment (especially below 0C), the inside of the stack may freeze or the temperature may be too low, and the proton exchange membrane cannot normally conduct protons, making cold start difficult or even failing. The PTC water heater is precisely the key component that provides auxiliary heating to the coolant during the cold-start phase: the system switches to the small circulation at low temperature, the PTC heater rapidly heats the coolant, and the heat is transferred to the stack to help it heat up quickly, thereby ensuring a successful cold start.

The NPA/NPH series PTC water heater uses PTC (positive temperature coefficient) heating technology: the resistance of the PTC element increases with temperature; when the temperature reaches the Curie point the resistance rises sharply and thermal power automatically drops. This characteristic gives the PTC heater self-limiting temperature and self-protection functions: even in the worst case (such as electronic control unit failure, voltage directly applied to the PTC), the temperature generated by the PTC can be kept within a safe range.

80V platform (NPA10A, 3kW): rated power 3kW, rated voltage 80V DC, weight <3000g. The product uses a heating core composed of extruded aluminum tubes and PTC heating modules; the cooling water channel is designed as a "U"-shaped surrounding channel, with large heating area, high heating efficiency and low pressure loss. Working temperature range -40C~85C (ambient) / -40C~90C (coolant), protection class IP67.

600V platform (NPH40A, 10kW): rated power 10kW, rated voltage 600V DC, weight 5kg. The product uses a plastic housing design, with a straight-through cooling water channel for lower flow resistance. Protection class IP68 (24 hours at 1m water depth). Working ambient temperature -40C~85C, coolant temperature -40C~90C.

Specifications:

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

Applications:

This product is widely used in the coolant small circulation circuit of various proton exchange membrane fuel cell (PEMFC) systems, specifically including:

• Hydrogen fuel commercial vehicles (heavy trucks, city buses, logistics vehicles) - fast cold-start heating in low-temperature environments
• Hydrogen fuel passenger vehicles (sedans, SUVs) - cold-start auxiliary heating in winter
• Stationary fuel cell power stations (backup power, distributed energy systems) - low-temperature start heating
• Hydrogen fuel cell ships - cold-start auxiliary heating
• Fuel cell forklifts and construction machinery - low-temperature environment start heating

Typical application position: installed in the fuel cell coolant small circulation circuit (the bypass pipeline between the stack outlet and the radiator); when the system starts at low temperature, the coolant flows through the small circulation, is heated by the PTC heater and then enters the stack, helping the stack heat up quickly to the normal working temperature.

Other application fields: the PTC water heater can also be applied to the battery heating system and air-conditioning heating system of pure electric vehicles and hybrid vehicles.

Company Advantages:

Shanghai Yibaijia Hydrogen Energy Technology Co., Ltd., as a professional hydrogen energy parts supply platform, distributes the NPA/NPH series PTC water heaters dedicated to fuel cells. The NPA10A (80V/3kW) and NPH40A (600V/10kW) PTC water heaters use PTC self-limiting temperature technology, support stepless power regulation via CAN communication, have multiple safety protection functions, and adapt to 5~200kW fuel cell systems. The product has passed IATF16949 certification and has been put into mass production. The Shanghai Yibaijia team has more than 10 years of hydrogen energy industry experience 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: Why does a fuel cell system need a PTC heater?
A: When a fuel cell stack starts in a low-temperature environment (below 0C), its interior may freeze or the temperature may be too low, and the proton exchange membrane cannot normally conduct protons, making cold start difficult or even failing. The role of the PTC heater is to provide auxiliary heating to the coolant during the cold-start phase, helping the stack heat up quickly to the normal working temperature and ensuring a successful cold start.

Q5: What is the difference between a PTC heater and an ordinary electric heater?
A: The PTC heater uses a positive temperature coefficient heating element - the resistance increases with temperature; after reaching the Curie point the resistance rises sharply and the thermal power automatically drops. This gives the PTC heater self-limiting temperature and self-protection functions; it will not overheat even in the worst case, far safer than an ordinary electric heater.

Q6: What are the main differences between the NPA10A and NPH40A?
A: The NPA10A is an 80V platform with 3kW power, suitable for small fuel cell systems (such as passenger vehicles, forklifts); the NPH40A is a 600V platform with 10kW power, suitable for large fuel cell systems (such as heavy trucks, stationary power stations).

Q7: What safety protection functions does the PTC heater have?
A: Multiple protections: temperature sensor status monitoring, PCB over-temperature protection (stops at >=120C), medium over-temperature protection (stops at >=90C), short-circuit protection, high-voltage interlock, high-voltage under-voltage/over-voltage protection, power reverse connection protection, communication loss detection, discharge request, etc.

Q8: How to install the PTC heater?
A: Note during installation: the heater water pipe should avoid being arranged downward; when placed sideways, the inlet should be at the bottom and the outlet at the top, so that gas in the coolant does not easily accumulate inside the PTC heater, improving service life.

Q9: 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.