The invention provides an electric vehicle thermal runaway early warning system, a control method and an electric vehicle. The thermal runaway early warning system for the electric vehicle comprises an optical fiber, a light source emitter, a light source receiver, a thermal runaway detection system controller, an alarm system, a first beam splitter arranged between the light source emitter and the input end of the optical fiber, a detector arranged on an optical signal reflection path of the first beam splitter, a second beam splitter arranged between the optical fiber output end and the light source receiver, and an optical filter and a light source receiver are arranged on an optical signal output path. The optical fiber is arranged close to the outer surface of the battery module or the battery cell, or at least part of the optical fiber is in contact with the outer surface of the battery module or the battery cell; the input end of the optical fiber is connected with the light source emitter, and the output end of the optical fiber is connected with the light source receiver; and the temperature of the battery cell is accurately monitored, and early warning is performed before the thermal runaway of the electric vehicle spreads, so that personal and property safety is protected.
本发明提供了一种电动汽车热失控预警系统、控制方法及电动汽车,该电动汽车热失控预警系统包括光纤、光源发射器、光源接收器、热失控检测系统控制器、报警系统、设置于所述光源发射器与光纤输入端之间的第一分光片、设置于所述第一分光片的光信号反射路径上的探测器、设置在光纤输出端与光源接收器之间的第二分光片以及设置于光信号输出路径上的光学滤波器和光源接收器。其中,所述光纤靠近于电池模组或电芯的外表面设置,或所述光纤至少部分与所述电池模组或电芯的外表面相接触;所述光纤的输入端与所述光源发射器连接,所述光纤的输出端与所述光源接收器连接;对电芯温度监控精确,在电动汽车热失控蔓延之前进行预警,保护人身财产安全。
Electric vehicle thermal runaway early warning system, control method and electric vehicle
一种电动汽车热失控预警系统、控制方法及电动汽车
2021-06-25
Patent
Electronic Resource
Chinese
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