High Voltage Coolant Heater Automotive Car

 

High Voltage Coolant Heater Automotive Car

 

 

 

This high-pressure coolant heater (also known as a PTC water heater for new energy vehicles) is a core thermal management component designed specifically for pure electric, hybrid, and fuel cell vehicles. It uses a high-voltage electrically driven PTC (positive temperature coefficient) heating element to heat the vehicle's coolant, replacing the waste heat from the engine in traditional gasoline vehicles. It provides two core functions: cabin heating and battery pack preheating/temperature control, making it a crucial component for ensuring the range and driving comfort of new energy vehicles in winter.

 

 

Item	WPTC01-1	WPTC01-2
Heating output	6kw@10L/min,T_in 40℃	6kw@10L/min,T_in 40℃
Rated voltage(VDC)	350V	600V
Working voltage(VDC)	250-450	450-750
Controller low voltage	9-16 or 18-32V	9-16 or 18-32V
Control signal	CAN
Heater dimension	232.3 * 98.3 * 97mm	232.3 * 98.3 * 97mm
Installation dimension	144*128*119	144*128*119
Joint dimension	φ25, φ20mm	φ25, φ20mm
High voltage connector	PL082X-6.1-2.5, PL082X-6.1-4 (Amphenol): C10514N1-04-1-2 (JonHon)
Low voltage connectors	A02-ECC320Q60A1-LVC-4 (a)(Sumitomo adaptive drive module)
Heater weight	＜2.4kg	＜2.4kg

 

Product Structure:
 

 

Air Conditioner Control Framework:

 

Design Aenefits: 

1. Adopts a 4-way PWM control mode, the bus impact current is small, with low requirements for the whole vehicle circuit relay. 

2. PWM mode control enables continuous power regulation. 

3. The 3CAN communication mode can report the working state of the controller, which is convenient for the whole vehicle control and monitoring.

 

Control Mode: Can Communication 

Control Function 

Soft start function: PWM Soft Start 

PWM from 0% to 100% takes 30 seconds. This function is used to protect high impulse current and sudden changes on high voltage buses. Each path is gradually soft starts, the soft start process has a ripple current, impact current small (＜1.3 times the rated current).

 

 

 

1. Safe and Reliable: Automotive-grade protection employs PTC self-limiting temperature technology to eliminate overheating risks at the source. It also boasts IP67/IP6K9K protection ratings and multiple fault protections, resisting high and low temperatures and vibration, making it suitable for harsh automotive environments and ensuring safer use.

 

2. High Efficiency and Energy Saving, Reducing Range Loss: With a thermal efficiency exceeding 95%, electrical energy is directly converted into heat energy. Combined with precise power regulation, it provides heating on demand, significantly reducing range loss due to heating, balancing comfort and energy consumption.

 

3. Intelligent Adaptability and Easy Integration: Supports CAN bus communication for seamless integration into the vehicle's thermal management system. Its integrated and compact design adapts to various vehicle models and installation spaces, is compatible with mainstream high-voltage platforms, and has low integration costs.

 

4. All-Scenario Empowerment, Enhancing the Overall Vehicle Experience: Simultaneously meeting the needs of cabin heating and battery preheating at low temperatures, it provides rapid and stable warm air while improving the low-temperature performance and lifespan of the power battery, a key guarantee for the winter performance and comfort of new energy vehicles.

 

 

 

New Energy Vehicle Cabin Heating

Replaces waste heat from traditional gasoline vehicle engines, providing a stable heat source for the air conditioning and heating systems of pure electric/hybrid vehicles, achieving rapid heating and ensuring driving comfort in winter.

 

Power Battery Low-Temperature Thermal Management

Preheats the battery pack in low-temperature environments, allowing it to quickly reach its optimal operating temperature range, improving charging efficiency and discharge performance, mitigating range reduction in winter, and extending battery life.

 

Commercial Vehicle and Special Purpose Vehicle Thermal Management

Suitable for new energy buses, logistics vehicles, construction machinery, and other commercial vehicles, providing heating for large cabin spaces while ensuring the stable operation of large-capacity power batteries and electronic control systems in low temperatures.

 

Fuel Cell and Power System Preheating

Provides low-temperature start-up heating support for core components such as fuel cell stacks, motors, and electronic controls, ensuring the power system quickly enters operating condition in frigid environments and improving overall vehicle reliability.

 

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