Hybrid vehicle idle charging slope sliding prevention control method

• Main Authors: WANG XIANHAI, KONG XIANGCHUANG, ZHU JIANWEI, ZHANG LUOLIANG, FENG YINGXIA, JIANG WEI, CUI XINGLONG, LI TONGTONG
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2019
• 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 discloses a hybrid vehicle idle charging slope sliding prevention control method. After a vehicle controller detects that a vehicle enters an idling state, whether idle charging entering conditions are satisfied nor not is detected first; the idle charging entering conditions comprise that 1, the vehicle is static, 2, the value of the state of charge (SOC) of a power battery is lower than a set maximum value, 3, a gearbox is in a P/N gear or a brake pedal is stepped down, 4, an engine operation state is allowed, and 5, a transmission chain is opened; and when the idle charging entering conditions are all satisfied, a slope angle condition is judged in the following steps of 1, when an ESP signal is valid and the vehicle is static, enabling the ESP to transmit a vehicle longitudinal acceleration coefficient signal to the vehicle controller, and enabling the vehicle controller to calculate a slope angle of approximately equal to 57.3*a, wherein a is a vehicle longitudinal acceleration coefficient,