![EW25 PTC Electric Heater [Liquid Electric Heater]](https://omo-oss-image.thefastimg.com/portal-saas/pg2025052717442189246/cms/image/001ccb2a-dbe5-4cb8-9fba-201bfdea22b2.png "EW25 PTC Electric Heater [Liquid Electric Heater]")
EW25 PTC Electric Heater [Liquid Electric Heater]
The new generation of maximum power electric heaters ,efficient and safe
The Yusenn EW25 PTC electric heater is currently the largest power electric heater available on the market, which can meet the high-power heating needs of large commercial vehicles and the cooling and heating needs of hydrogen fuel cells. 25KW electric heater, the highest power electric heater on the market.Category： PTC Electric Heaters
Product Details
New-energy commercial vehicles, such as new-energy buses and coaches, primarily rely on high-voltage electricity for power. Without the residual heat from traditional vehicle engines, the cabin’s heating needs must now be met entirely through the conversion of high-voltage electricity. The PTC liquid electric heater serves as the device that supplies the vehicle with the necessary thermal energy—transforming high-voltage electricity into heat, which is then transferred to a circulating medium via a heat exchanger. This medium carries the heat to the areas of the vehicle that require it, enabling efficient thermal management throughout the vehicle.
YuSheng Technology's EW25 PTC Electric Heater (3rd Generation High-Voltage Electric Liquid Heater) is a pure electric heater that leverages PTC electric heating core technology. It’s ideal for new-energy electric vehicles with larger heating spaces, such as new-energy buses and coaches, and can also be seamlessly integrated into diversified battery thermal management systems, including energy storage and hydrogen fuel cell applications.
The EW25 PTC electric heater features high-voltage electric liquid heating technology, precisely addressing the efficient heating and thermal management needs of larger spaces in new-energy commercial vehicles, as well as the battery pack’s heating and insulation requirements. It provides a stable and reliable PTC pure-electric heating solution for battery thermal management in areas such as new-energy vehicles, energy storage, and hydrogen fuel cells.
Integrated Die CastingIntegrated die-cast housing, ensuring complete physical isolation between electrical components and the heated medium. |
Imported componentsThe controller uses imported IGBT components, featuring a compact size and high reliability. |
High-precision power controlPWM stepless adjustment, high-precision power control, achieving up to ±10W |
Real-time ProtectionIt features overcurrent protection, high-voltage interlock, short-circuit detection and protection, overvoltage detection and protection (780V), undervoltage detection and protection (420V), open-circuit detection and protection, temperature setting, and overtemperature protection, among other functions. |
Ultra-stableIt possesses high-temperature resistance, cold resistance, corrosion resistance, vibration resistance, and electromagnetic interference immunity. |
Independently developedSelf-developed intelligent control system, with enhanced safety protection features |
PTC Electric Heater Operating Principle ▶
The EW25 PTC electric heater operates by using a controller to regulate the amount of heat generated by the PTC element. This heat is then transferred to the antifreeze fluid via a heat exchanger, ultimately raising the temperature of the antifreeze.
The PTC core of the EW25 PTC electric heater is a positive temperature coefficient resistor that generates heat when energized. Once the temperature reaches the Curie point (the stable temperature achieved when voltage is applied to the PTC), it remains constant—providing a safe and reliable advantage. The PTC core and the water flow channels of the heat exchanger are arranged in a cross configuration, allowing the heat generated by the PTC core to be efficiently transferred via the water channels to the internal antifreeze fluid, thereby raising its temperature.
The controller for the EW25 PTC electric heater primarily functions to regulate the power output of the PTC heating element within the heater, controlling the amount of heat generated. It also establishes communication with the vehicle, receiving operational commands and requirements from the vehicle, while simultaneously monitoring the heater’s status in real time and providing feedback on its performance.
●The IGBT dissipates heat on the water channel, avoiding any impact of the installation position on cooling performance;
●The PCB board is mounted on the lower housing to prevent cable harnesses from being squeezed;
PTC Electric Heater Operating Procedure ▶
After receiving the vehicle's operational command and temperature requirements, the EW25 PTC electric heater determines whether heating is needed based on the difference between the desired temperature and the actual water temperature, then activates the PTC control system accordingly. Throughout the process, the heater continuously monitors whether the actual water temperature has reached the target level. Once the target temperature is achieved, the heater automatically reduces its power output or ceases heating altogether.
Suitable Models ▶
|
Energy storage |
Hydrogen fuel cell |
Technical Specifications ▶
| Water-heating heater electric heating | EW25 PTC Electric Heater [Liquid Electric Heater] |
| Voltage V | 300–750 |
| Heating power kW | 25KW |
| Water flow rate l/h | Greater than or equal to 1200 L/h |
| Operating temperature ℃ | -40~+90 |
| Dimensions: Length x Width x mm | 352X358X131 |
| Thermal Efficiency % | 85–92 |
| Service Life (Years) | 10 |
| Protection Level | IP67 |
| Dielectric Strength DCV | 3500 |
| Insulation resistance MΩ | 500 |
★PTC electric heaters are available for custom development. Please contact customer service if needed.
Keywords： EW25 PTC Electric Heater [Liquid Electric Heater]
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