Stable energy output control strategy for extended-range power system

• Main Authors: WANG GUIYONG, LEI JILIN, WANG WEICHAO, SHEN LIZHONG
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR 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 stable energy output control strategy for a range-extended power system, and relates to the technical field of energy output control, the stable energy output control strategy comprises a whole vehicle control strategy and a range extender control strategy, in the whole vehicle control strategy, when the part, larger than the output energy of a power battery, of the whole vehicle demand energy is compensated by the output energy of a range extender, the whole vehicle demand energy is compensated by the output energy of the range extender; in the range extender control strategy, if the SOC of the power battery is larger than the lower limit value of the charge interval, the whole vehicle runs in a pure electric mode; if the SOC of the power battery is reduced to the lower limit value of the charge interval, a range extender is turned on, the whole vehicle runs in a range extending mode, and the control strategy adopted for the engine is determined according to the energy required by t