The invention relates to the field of electric vehicle battery charging methods, in particular to a battery electric vehicle self-adaptive intelligent charging method, which comprises the following steps: obtaining a wake-up period according to an initial state of a vehicle, enabling T-BOX to perform self-wake-up every preset time period, and starting an intelligent charging strategy, meanwhile, the T-BOX collects the voltage and current of the storage battery and the dark current of the whole vehicle, which are collected by the BCM, through a CAN network; calculating the ohmic internal resistance of the current storage battery by the T-BOX according to the voltage and current value of the storage battery, and performing conversion based on a preset algorithm to obtain the current health state of the storage battery; according to the whole vehicle dark current of the vehicle in the static state and the current capacity of the storage battery, the longest discharging time of the storage battery is obtained through calculation according to a preset formula; correcting the self-dormancy time of the T-BOX according to the longest discharge time of the storage battery and a set formula; and correcting the self-sleep time of the T-BOX according to the self-sleep time obtained in the step 4 after each time of charging is completed. The problem that the whole vehicle cannot be charged due to faults or too low electric quantity of a power battery and the like is prevented.
本发明涉及电动车电池补电方法领域,具体涉及一种纯电动汽车自适应智能补电方法,包括:根据车辆初始状态下得到唤醒周期,让T‑BOX每过预设时间段进行自我唤醒,并开始智能补电策略,同时由T‑BOX通过CAN网络收集BCM采集的蓄电池电压、电流和整车暗电流;由T‑BOX根据蓄电池电压与电流值,计算得到当前蓄电池的欧姆内阻,并基于预设算法换算得到蓄电池当前健康状态;根据车辆静止状态的整车暗电流及蓄电池当前容量以预设公式,计算得到蓄电池的最长放电时间;根据蓄电池最长放电时间按照设定公式修正T‑BOX的自我休眠时间;每次补电完成后,以步骤4得到自我休眠时间修正T‑BOX的自我休眠时间。本发明防止整车因故障或动力电池电量过低等原因导致的无法补电。
Self-adaptive intelligent charging method for pure electric vehicle
一种纯电动汽车自适应智能补电方法
2024-02-27
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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