The invention provides a closed-loop power battery equalization control system based on temperature feedback, a battery pack and a new energy automobile, and relates to the technical field of power batteries, the closed-loop power battery equalization control system comprises an equalization resistor connected in parallel to two ends of a single battery of the power battery, and the equalization resistor is also connected in series with an equalization controller; the temperature acquisition device is used for acquiring the real-time temperature of the equalization resistor; and the equalization control module is used for controlling the turn-on and turn-off frequency of the equalization controller according to the difference value between the real-time temperature and the given temperature when the equalization resistor is enabled in an equalization manner, so that the real-time temperature is controlled within a reasonable interval. The method has the beneficial effects that the real-time temperature of the equalization resistor is stabilized in a reasonable interval, the real-time temperature monitoring of the equalization resistor is realized, the influence of temperature change on the equalization current in the working process of the equalization resistor is eliminated, the stability and controllability of an equalization control system are ensured, and the service life of the equalization control system is prolonged. Therefore, the accuracy of the equalizing current and the temperature consistency of each single battery are ensured.
本发明提供一种基于温度反馈的闭环动力电池均衡控制系统、电池包及新能源汽车,涉及动力电池技术领域,包括:均衡电阻,并联于动力电池的单体电池两端,所述均衡电阻还串联有均衡控制器;温度采集装置,用于采集所述均衡电阻的实时温度;均衡控制模块,用于在所述均衡电阻均衡使能时,根据所述实时温度与给定温度之间的差值控制所述均衡控制器的导通关断频率,以将所述实时温度控制在合理区间内。有益效果是使得均衡电阻的实时温度稳定在合理区间,实现均衡电阻实时温度可监控性的同时,消除了均衡电阻工作中温度变化对均衡电流的影响,保证了均衡控制系统的稳定性和可控性,进而保证了均衡电流的准确性以及各单体电池的温度一致性。
Closed-loop power battery equalization control system, battery pack and new energy automobile
闭环动力电池均衡控制系统、电池包及新能源汽车
2023-12-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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