The invention discloses a method and device for restraining vehicle vibration in the battery self-heating process and an automobile, and relates to the technical field of batteries, the method comprises the steps that a power battery pack is controlled to output driving current to a first motor so as to drive the first motor to rotate, and when the first motor rotates, a second motor is dragged to rotate; controlling the power battery pack to output self-heating current to a second motor so as to perform self-heating of the power battery; acquiring the real-time rotating speed of the first motor; the fundamental frequency of the self-heating current is controlled according to the real-time rotating speed, so that peak shifting is formed between the fundamental frequency and the real-time rotating speed. According to the method, the real-time rotating speed of the motor is obtained, and the self-heating fundamental wave frequency change is controlled according to the real-time rotating speed, so that the real-time rotating speed of the motor for self-heating and the self-heating fundamental wave frequency do not meet a certain relationship in numerical value all the time, shaking of the motor for self-heating can be eliminated, the whole vehicle cannot vibrate, and the service life of the whole vehicle is prolonged. And the service life of the asynchronous motor is prevented from being damaged while the driving experience feeling of passengers is improved.
本发明公开一种抑制电池自加热过程中车辆震动的方法、装置以及汽车,涉及电池技术领域,所述方法包括:控制动力电池包向第一电机输出驱动电流以驱动第一电机转动,第一电机转动时拖曳第二电机转动;控制动力电池包向第二电机输出自加热电流以进行动力电池的自加热;获取第一电机的实时转速;根据实时转速控制自加热电流的基波频率,使基波频率与实时转速形成错峰。本发明获取电机的实时转速,根据实时转速控制自加热的基波频率变化,使得用于自加热的电机的实时转速与自加热的基波频率两者之间始终不满足数值上的某种关系,即可消除用于自加热的步电机的抖动,使得整车不会发生震动,提升乘客驾驶体验感的同时,还避免了损伤异步电机的使用寿命。
Method and device for inhibiting vehicle vibration in battery self-heating process and automobile
一种抑制电池自加热过程中车辆震动的方法、装置及汽车
2024-03-01
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Vehicle battery self-heating control method, device and system, automobile and storage medium
European Patent Office | 2022
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