The invention provides an electric vehicle, a power battery heating device and a control method thereof.The power battery heating device comprises a control circuit, a first resonance circuit and a second resonance circuit, and the control circuit controls the second resonance circuit to alternately switch working states according to a preset frequency; the power battery is charged and discharged alternately through the first resonance circuit and the second resonance circuit, the resonance inductance of the first resonance circuit is the parasitic inductance of the power battery, the power battery is charged and discharged at a larger preset frequency through the two resonance circuits, and the charging and discharging current of the power battery is improved; therefore, the heat generated by the power battery in unit time is increased, the heating time required by the heating device for heating the power battery is shortened, and the heating efficiency of the heating device is further improved.
本申请提供一种电动车辆、动力电池的加热装置及其控制方法,其中,动力电池的加热装置包括控制电路、第一谐振电路和第二谐振电路,控制电路按照预设频率控制第二谐振电路交替切换工作状态,使动力电池通过第一谐振电路和第二谐振电路交替充放电,第一谐振电路的谐振电感为动力电池的寄生电感,使动力电池通过两个谐振电路以更大的预设频率充放电,提高了动力电池充放电的电流,从而增加了动力电池单位时间所产生的热量,减少了加热装置为动力电池加热所需的加热时间,进而提高了加热装置的加热效率。
Electric vehicle, heating device of power battery and control method of heating device
电动车辆、动力电池的加热装置及其控制方法
2025-04-08
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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