The invention belongs to the technical field of electric vehicle application, and provides an electric vehicle cold start system based on eddy current heating. A high-frequency alternating current is introduced into eddy current coils arranged at the upper position and the lower position of the square battery, an eddy current is generated on a metal pole plate of the square battery through the electromagnetic induction effect, and the square battery is evenly heated through the heat effect of the eddy current. Temperature sensors are distributed on the surfaces of the square batteries, temperature signals of the surfaces of the batteries are transmitted to a single chip microcomputer, and the single chip microcomputer controls an inverter so as to control the heating process. Compared with a traditional electric automobile cold start system, the electric automobile cold start system has the advantages that the square batteries are heated in a spaced mode through the electromagnetic induction effect, the uniformity of the temperature of the single batteries is guaranteed, and the influence of heat conduction on other parts in an automobile body is reduced. Compared with a traditional heating mode, the efficiency of eddy current heating is as high as 95%. The eddy current heating speed is high and the response time is short. The system can directly utilize a direct-current power supply provided by a square battery, and the direct-current power supply is converted into a high-frequency alternating-current power supply through an inverter.
本发明属于电动汽车应用技术领域,提供了一种基于涡流加热的电动汽车冷启动系统。布置在方形电池上下位置的涡流线圈中通入高频交变电流,利用电磁感应效应在方形电池金属极板上产生涡流,利用涡流的热效应均匀加热方形电池。方形电池表面布有温度传感器,电池表面的温度信号传至单片机,由单片机控制逆变器,从而控制加热过程。相比于传统的电动汽车冷启动系统具有以下优点:利用电磁感应效应实现对方形电池隔空加热,保证电池单体温度的均匀性,减少导热对车体内其他零部件造成的影响。涡流加热相比于传统的加热方式效率高达95%。涡流加热速度快,响应时间短。该系统可直接利用方形电池提供的直流电源,通过逆变器转变成高频交流电源。
Electric automobile cold start system based on eddy current heating
一种基于涡流加热的电动汽车冷启动系统
2021-09-07
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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