The invention provides a battery pack heat preservation charging method and device considering the electricity price, and the method comprises the steps: firstly obtaining a battery cooling MAP, recording the charging and vehicle use time, and setting the target temperature of a battery cell; the duration of each stage is determined by setting different cell temperature thresholds in the passive heat preservation stage and the active heating stage in combination with the battery cooling characteristic and the target heating power. Then, based on factors such as parking charging time and vehicle using time, charging starting time is calculated, and a dynamic planning algorithm is used for determining charging current; the optimal heat preservation and heating temperature target is selected by calculating cost functions at different target temperatures, so that a charging strategy with the cost benefit maximization is realized. According to the invention, the thermal insulation charging process with temperature uniformity and lowest cost can be taken into account, and the charging performance is prevented from being influenced by too low battery temperature or poor temperature uniformity while the charging cost is reduced.
本申请提供了一种计及电价的电池组保温充电方法及装置,该方法包括:首先获取电池降温MAP图,记录充电及用车时间,并设定电芯目标温度。通过设定被动保温与主动加热阶段的不同电芯温度阈值,结合电池降温特性和目标加热功率,确定各阶段持续时间。随后,基于停车充电时间、用车时间等因素,计算充电开始时间,并利用动态规划算法确定充电电流。通过计算不同目标温度下的代价函数,选择最优的保温与加热温度目标,以实现成本效益最大化的充电策略。本申请能够兼顾温均性的且最低成本的保温充电过程,在降低充电成本的同时避免因为电池温度过低或温度均匀性差影响充电性能。
Battery pack heat preservation charging method and device considering electricity price
一种计及电价的电池组保温充电方法及装置
2024-11-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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