Compensation method and system for lithium battery capacity of hybrid power vehicle

• Main Authors: YAN GUOGANG, LI CHUN, JU DUHU, SHI XIONGFENG, NIU JIAWEI, FANG LANLAN
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2023
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a method and system for compensating the capacity of a lithium battery of a hybrid power vehicle, and the method comprises the steps: S1, obtaining the current system capacity of the lithium battery of the hybrid power vehicle, judging whether the current system capacity is within a preset compensation defined range or not, if yes, executing the step S2, and if not, ending the compensation; s2, the discharging capacity and the charging capacity of the hybrid power vehicle within the preset time are obtained, whether capacity compensation needs to be carried out on the vehicle or not is judged based on the discharging capacity and the charging capacity, if yes, the step S3 is executed, and if not, compensation is ended; and S3, calculating a capacity compensation value based on the discharge capacity and the charge capacity of the hybrid vehicle within the preset time, and performing capacity compensation on the vehicle lithium battery based on the capacity compensation value. According