High Voltage Integrated Cooling & Heating Bus Defroster PTC Windshield Heater Cooler for New Energy EV Coach
Product Introduction
This cold & warm integrated high voltage bus defroster is a new upgraded HVAC unit specially designed for new energy electric buses and coaches. Compatible with 400V/600V/800V high-voltage systems, it combines heating and cooling functions in one device. In winter, it provides fast hot air for defrosting and defogging to ensure clear windshield vision. In summer, it supplies cool air to improve driver comfort, realizing all-season use.
Product Advantages
- Dual cold and warm function, one machine for all seasons, greatly saving installation cost and space.
- Adopts high-efficiency PTC heating technology with fast heating, uniform temperature and low energy consumption.
- Built-in multiple safety protections, including overheat protection, HVIL protection and fan linkage anti-dry burning design.
- Stable operation, strong shock resistance and long service life suitable for long-term vehicle operation.
- Support OEM customization for power, size and air outlet mode.
Application
Widely applied for 6–18m new energy electric city buses, tourist coaches, hybrid buses and fuel cell buses. It is mainly used for windshield defrosting, defogging and driver cabin temperature adjustment, perfectly meeting the all-weather air conditioning demand of commercial passenger
Technical Parameter
Product Name DCS series high voltage electric DCS-900B-WX001
Application pure electric buses
Rated power 7.5KW(OEM)
Rated Voltage DC600V （450V-750V)
Working Temperature -40℃~85℃
Fan Voltage 24V
Fan Power 170W
Over dimension 426mmx137mmx300mm
◇Defroster noise: According to the relevant requirements of "Q/BYDQ-A1906.4415-2017 Technical Conditions for Bus Electric Defroster Assembly", the
defroster noise is less than 65dB.
◇Insulation withstand voltage test: At an ambient temperature of 25±3℃ and a humidity of less than 70%RH, apply a 2500VAC voltage between the PTC core and
the terminal for 30 seconds. There should be no breakdown or flashover, and the defroster should operate normally with a power variation of ±10%.
◇Insulation resistance test: At an ambient temperature of 25±3℃ and a humidity of less than 70%RH, apply a specified 1000VDC voltage between the terminal
and the aluminum housing for 30 seconds. The measured insulation resistance should be no less than 100MΩ.
◇Electromagnetic compatibility performance: Complies with the relevant requirements of "QBYDQ-A1901.706.3-2020" and "QBYDQ-A1901.706.4-2020".
◇The materials of the product and its components all comply with the requirements of "GB/T30512 - Prohibited Substances in Automobiles".
◇Flame retardant properties: The insulation layer of the cable meets the flame retardant performance test requirements for B-class voltage components (horizontal
and vertical burning tests are conducted in accordance with the provisions of GB/T 2408-2008); the combustion characteristics of the electric heating core meet the
◇relevant requirements of GB 8410-2006 and GB 12666.2-2008.
◇The temperature difference between each air outlet is less than 5℃.
◇According to the "QBYDQ-A1901.1373-2018" automotive parts and assemblies odor test method, the odor level should be ≤ 3.5.
◇The electric heating core must be connected to a fuse with a rated operating temperature of 187℃. Once the fuse blows, it cannot be reset.
◇The product has an attractive appearance. The surface should be free from scratches, damages, cracks, grease and other harmful deformations that affect usage and appearance. There
should be no defects such as scratches, burrs, rust, deformation or cracks. The outer surface should not have any sharp protrusions that could cause injury (such as sharp corners or sharp edges).◇When the defroster is in a stable working state, its surface temperature should not exceed 125℃, and the outlet air temperature should not exceed 65℃.
◇When the defroster is in a stable working state, the connection between the air ducts is well sealed without any air leakage. The insulation level of the high-voltage interface meets the
requirements of SAE J1742-2005 "Test Methods and General Performance Requirements for On-Vehicle High-Voltage Wire Connections" and GB/T-18384.3-2001 "Safety Requirements for
Electric Vehicles".
◇Condensate drainage: When the multi-functional defroster and demister assembly is tilted 15° forward/backward and 12° left/right relative to the vehicle's assembly position, in each air
outlet mode, the condensate water should be able to drain smoothly through the drain pipe, and no condensate water droplets should be blown out from any air outlet.
◇Operation safety capability: The electric defroster is equipped with a temperature switch. When the temperature of the PTC core reaches the set upper limit, the temperature switch will open , and the PTC core will stop working. When the temperature of the PTC core drops to the set lower limit, the temperature switch will close, and the PTC core will start working.
◇Sealing performance: When the inlet static pressure is 150Pa, the leakage of the housing (including the expansion valve, housing joint, etc.) and the air door should meet the following
requirements: housing leakage < 15L/s; leakage of a single air outlet < 1.0L/s.
◇Low-voltage steady-state current: 10.4A; high-voltage impulse current: 12.6A, impulse current duration: 0.3~0.5s; high-voltage steady-state current: 9.4A.
◇All crimping points of the low-voltage wiring harness included should be heat shrunk with heat shrink tubing containing hot melt adhesive (ensuring a tight and reliable seal after heat
shrinking). It is strictly prohibited to use tape for sealing.
◇Other requirements not specified herein shall be carried out in accordance with the "Design and Development Requirements for Heating, Cooling and Defrosting Devices (Systems)".
◇Unspecified dimensional tolerances shall be in accordance with GB/T1804-2000, grade v.
◇The items marked with ★ are special characteristics. The dimensions marked in the drawing do not include the thickness of the insulation layer.
◇The product has an attractive appearance. The surface should be free from scratches, damages, cracks, grease and other harmful deformations that affect usage and appearance. There
should be no defects such as scratches, burrs, rust, deformation or cracks. The outer surface should not have any sharp protrusions that could cause injury (such as sharp corners or sharp edges).◇When the defroster is in a stable working state, its surface temperature should not exceed 125℃, and the outlet air temperature should not exceed 65℃.
◇When the defroster is in a stable working state, the connection between the air ducts is well sealed without any air leakage. The insulation level of the high-voltage interface meets the
requirements of SAE J1742-2005 "Test Methods and General Performance Requirements for On-Vehicle High-Voltage Wire Connections" and GB/T-18384.3-2001 "Safety Requirements for
Electric Vehicles".
◇Condensate drainage: When the multi-functional defroster and demister assembly is tilted 15° forward/backward and 12° left/right relative to the vehicle's assembly position, in each air
outlet mode, the condensate water should be able to drain smoothly through the drain pipe, and no condensate water droplets should be blown out from any air outlet.
◇Operation safety capability: The electric defroster is equipped with a temperature switch. When the temperature of the PTC core reaches the set upper limit, the temperature switch will open , and the PTC core will stop working. When the temperature of the PTC core drops to the set lower limit, the temperature switch will close, and the PTC core will start working.
◇Sealing performance: When the inlet static pressure is 150Pa, the leakage of the housing (including the expansion valve, housing joint, etc.) and the air door should meet the following
requirements: housing leakage < 15L/s; leakage of a single air outlet < 1.0L/s.
◇Low-voltage steady-state current: 10.4A; high-voltage impulse current: 12.6A, impulse current duration: 0.3~0.5s; high-voltage steady-state current: 9.4A.
◇All crimping points of the low-voltage wiring harness included should be heat shrunk with heat shrink tubing containing hot melt adhesive (ensuring a tight and reliable seal after heat
shrinking). It is strictly prohibited to use tape for sealing.
◇Other requirements not specified herein shall be carried out in accordance with the "Design and Development Requirements for Heating, Cooling and Defrosting Devices (Systems)".
◇Unspecified dimensional tolerances shall be in accordance with GB/T1804-2000, grade v.
◇The items marked with ★ are special characteristics. The dimensions marked in the drawing do not include the thickness of the insulation layer.
Package And Delivery
Why Choose Us
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 100% in advance.
Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.
Q4. How about your delivery time?
A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit.
A lot of customer feedback says it works well.
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
