The invention relates to a vehicle-mounted air-cooled brake resistor system with multiple protection, which comprises a brake resistor and a brake resistor controller, the brake resistor is mainly composed of a box body shell, a resistor unit and a cooling fan, the resistor unit is located in an air channel enclosed by the box body shell, the cooling fan is forced to cool a resistor disc, and the resistor disc is connected with the brake resistor controller. Two layers of insulation protection are formed in the resistor unit through an insulation structure, a high-voltage protection function is added to an internal circuit of the brake resistor controller, a main positive contactor and a main negative contactor are arranged to form electrical insulation protection, and meanwhile high-temperature protection is formed through a cooling fan fault feedback function and a temperature sensor. Through the three-layer insulation protection and high-temperature protection functions, the safety protection performance of an existing air-cooled brake resistor system is improved, the application requirements under the working conditions of multiple scenes are met, the product safety is improved, and the service life of the product is prolonged.
本发明涉及一种具有多重防护的车载风冷制动电阻系统,包括制动电阻和制动电阻控制器两部分,制动电阻主要由箱体外壳,电阻单元、散热风扇组成,电阻单元处于箱体外壳围成的风道中,散热风扇对着电阻片强制风冷,所述电阻单元内部通过绝缘结构形成两层绝缘防护,制动电阻控制器内部电路增加高压电压防护功能,设主正接触器和主负接触器,形成电气绝缘防护,同时,通过散热风扇故障反馈功能和温度传感器形成高温保护,通过三层绝缘防护和高温保护功能,提升了现有风冷制动电阻系统的安全防护性能,满足多场景工况下应用需求,提升产品安全性及使用寿命。
Vehicle-mounted air-cooled brake resistor system with multiple protection
一种具有多重防护的车载风冷制动电阻系统
16.05.2025
Patent
Elektronische Ressource
Chinesisch
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