The invention discloses a lithium battery charging and discharging control method based on an oil-electricity dual-drive ship, and the method comprises the steps: carrying out the power differentiation control of each group of lithium batteries in a pure battery navigation mode, and enabling all lithium batteries to discharge averagely; when the charge state of the lithium battery pack is reduced to a first preset value, a generator set is started to supply power to the ship system; enabling the lithium battery pack and the generator set to carry out power output on a direct current bus of the ship power system according to a preset bearing power ratio; switching the lithium battery pack from the discharging mode to the charging mode after bearing the power output of the preset time; and selecting a charging mode according to the charge state of the lithium battery pack. Whether the generator set is currently connected or not is judged according to the charge state of the lithium battery, the charging mode is selected according to the charge state, the active power of the generator set is improved as much as possible through the lithium battery pack charging and discharging strategy, and the cruising ability of the oil-electricity dual-drive ship is overall improved.
本发明公开了一种基于油电双驱动船舶的锂电池充放电控制方法,包括:在纯电池航行模式下,对每组锂电池进行功率差异化控制,使所有锂电池平均放电;当锂电池组的荷电状态下降至第一预设值时,启动发电机组对船舶系统进行供电;使锂电池组与发电机组按照预设承担功率比值对船舶动力系统的直流母线进行功率输出;使锂电池组在承担预设时间的功率输出后从放电模式切换为充电模式;根据锂电池组的荷电状态选择充电模式。通过锂电池的荷电状态判断当前是否接入发电机组以及根据荷电状态选择充电模式,尽可能地利用锂电池组充放电策略提高发电机组的有功功率,从整体上提高了油电双驱动船舶的续航能力。
Lithium battery charging and discharging control method based on oil-electricity dual-drive ship
基于油电双驱动船舶的锂电池充放电控制方法
2023-03-28
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / 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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