Selection case of high wind pressure and low noise cooling fan for tram energy storage box

After nearly 70 years of development, China's rail car technology has now become the pride of the Chinese people. Today we are going to discuss the selection of the cooling fan of the capacitor energy storage box of the tram: The tram adopts the electric drive energy storage type power supply method, and the energy storage power supply vehicle can be quickly charged in the platform area, and the fast charging will be completed. The current and voltage increase sharply and the heat rises rapidly. The power module and other components generate a lot of heat. If the heat cannot be cooled in time, the temperature in the box will rise sharply. Affected by high temperature, the life of the electronic devices in the capacitor storage box will be affected. It is a great threat, which leads to the lack of guarantee for the overall life of the capacitive energy storage box of trams. What problems should be paid attention to when selecting the cooling fan used in the capacitive energy storage box of trams? I consulted Huang Gong, the technical support of Tong Chi's automotive cooling fan application technology. u003cbru003e u003cbru003e u003cbru003e Shenzhen Tongchi Automobile Co., Ltd. is the designated agent of Japan's Sanyo Fan in China. The cooling fan selection and application technology supports Huanggong. According to the application characteristics of the electric vehicle capacitive energy storage box, Huanggong is recommended to be used in rail vehicles The cooling fan of the electric car capacitor energy storage box should meet the following characteristics: high static pressure, high air volume, low vibration, low noise, long life and other characteristics. u003cbru003e u003cbru003e u003cbru003e Huang Gong of Tongchi Automobile shared with me the cooling fan case he recommended for the capacitor energy storage box of the tram: as shown in the figure u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e The customer provides a heat flow simulation test with an air volume of 1000m^3/h. The structure is composed of: a cabinet uses 6pcs fans in series for heat dissipation, a single cooling fan has an action point of 170m^3/h and a static pressure of 380Pa. The maximum size of a single cooling fan should not exceed 190mm in diameter and 140mm in thickness. The total noise of the 6pcs cooling fan after being installed in the cabinet should not exceed 70dB, because the outdoor fan needs to have a waterproof rating of IP54. u003cbru003e u003cbru003e u003cbru003e According to the requirements of the cooling fan of the capacitor energy storage box of the rail vehicle provided by the customer, combined with the actual characteristics of the cooling fan, Tongchi Automobile Huanggong recommends the Japanese SanAce brand high wind pressure and long life series fan, model: 9HV5724P5H001 , Fan size: 172*150*51, fan voltage: DC24V according to the following: u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e Requirement 1: 6pcs cooling fan shall not be higher than 70dB. u003cbru003e u003cbru003e u003cbru003e Calculate the maximum noise of a single cooling fan: 70dB-10log(6)u003d62.22dB. u003cbru003e u003cbru003e u003cbru003e Requirement 2: The air volume at the operating point of a single cooling fan is 170m^3/h, and the static pressure is 380pa. u003cbru003e u003cbru003e u003cbru003e The air volume of the cooling fan is 170m^3/hu003d100CFM. u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e Integrating the requirements of the capacitive energy storage box of rail vehicles, combined with the characteristics of the axial flow cooling fan, Tongchi Huanggong recommends the Shanyang brand high static pressure cooling fan model: 9HV5724P5H001. The fan is used with derating and the speed is reduced to 5650 rpm. Single fan action point: air volume 100CFM, static pressure 380Pa, noise calculation is 63.4dB. u003cbru003e u003cbru003e u003cbru003e The air volume and air pressure of 9HV5724P5H001 cooling fan are shown in the table below: u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e The above is the selection case of high wind pressure and low noise DC cooling fan for the tram capacitor energy storage box shared by Tong Chi Automobile Huang Xianping. Finally, Huang Gong said modestly that the cooling fan application scenarios are extensive and complex, and he is limited by scenarios and cognition. This solution may not be the best solution for the high wind pressure and low noise DC cooling fan of the tram capacitor storage box. , If you have better suggestions or plans, welcome to participate in the discussion and exchanges, thank you! u003cbru003e u003cbru003e u003cbru003e Tongchi Auto is specialized in cooling fans. It is the agent of SanAce Japan Sanyo cooling fan, Jamicon Taiwan Kaimei cooling fan China, AVC Taiwan fan agent, and has an experienced technical team that can assist in cooling fan application solutions, The cooling fans provided are of reliable quality and stable delivery. Customers who need cooling fans can discuss and exchange with them.