The invention relates to the technical field of batteries, and discloses a battery equalization method and a battery equalization system. The battery equalization method comprises the steps that a to-be-equalized battery module is controlled to execute multiple equalization operations, the to-be-equalized battery module comprises multiple battery units, each equalization operation comprises an equalization stage and an intermittent stage, simulation open-circuit voltage of each battery unit in the intermittent stage is determined, target equalization voltage is acquired, and the target equalization voltage is applied to the to-be-equalized battery module; and controlling the equalization operation of the battery module to be equalized according to the simulated open-circuit voltage and the target equalization voltage. On one hand, compared with a continuous large-current equalization mode, the embodiment adopts an intermittent equalization mode to equalize the battery module to be equalized, so that excessive heating of the battery module to be equalized can be avoided, and the equalization process is safer; the voltage is closer to the static open-circuit voltage, and the equalization operation of the to-be-equalized battery module can be reliably controlled.
本发明涉及电池技术领域,公开一种电池均衡方法及电池均衡系统。电池均衡方法包括:控制待均衡电池模组执行多个均衡操作,待均衡电池模组包括多个电池单元,每个均衡操作包括均衡阶段和间歇阶段,确定每个电池单元在间歇阶段时的模拟开路电压,获取目标均衡电压,根据模拟开路电压和目标均衡电压,控制待均衡电池模组的均衡操作。一方面,相对持续大电流均衡方式,本实施例采用间歇均衡方式对待均衡电池模组进行均衡,可避免待均衡电池模组过度发热,均衡过程更加安全,另一方面,每个电池单元在间歇阶段时的模拟开路电压相对于进行均衡时测量得到的端电压,更接近于静态开路电压,有利于可靠控制待均衡电池模组的均衡操作。
Battery equalization method and battery equalization system
一种电池均衡方法及电池均衡系统
2023-06-06
Patent
Elektronische Ressource
Chinesisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
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