The invention relates to the technical field of power battery health, in particular to a power battery health state estimation method and device, a vehicle and a storage medium, and the method comprises the steps: collecting the charging capacity of the power battery of the vehicle in each characteristic voltage interval in the current charging process, and the corresponding average charging temperature and average charging current; on the basis of the average charging temperature and the average charging current, correcting the charging capacity of each characteristic voltage interval into an actual charging capacity under a preset standard working condition; according to the actual charging capacity, the actual charging capacity of the full-voltage interval of the power battery is obtained through the mapping relation, and the actual health state of the power battery is obtained according to the actual charging capacity of the full-voltage interval. Therefore, the problems that the accuracy of the evaluation result cannot be guaranteed and the power battery health state evaluation requirement in the complex variable voltage use scene in real vehicle application cannot be met due to the uncertainty of the battery characteristic expression and the complex use condition scene in the related technology are solved.
本申请涉及动力电池健康技术领域,特别涉及一种动力电池的健康状态估计方法、装置、车辆及存储介质,其中,方法包括:采集车辆的动力电池在本次充电过程中的各特征电压区间的充电容量及对应的平均充电温度和平均充电电流;基于平均充电温度和平均充电电流,将各特征电压区间的充电容量修正为在预设标准工况下的实际充电容量;根据实际充电容量利用映射关系获取动力电池的全电压区间的实际充电容量,并根据全电压区间的实际充电容量得到动力电池的实际健康状态。由此,解决了相关技术中面对复杂的使用工况场景以及电池特征表现的不确定性,评估结果的准确度得不到保障,不能满足实车应用中复杂多变电压使用场景下动力电池健康状态评估需求等问题。
Power battery health state estimation method and device, vehicle and storage medium
动力电池的健康状态估计方法、装置、车辆及存储介质
2024-09-06
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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