Battery state of charge target based on predicted regenerative energy

• Main Authors: Burke Stephen R, Miller Kenneth James, Perkins William Paul, Martin Douglas Raymond
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2016
• 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 relates to a battery state of charge target based on predicted regenerative energy. A hybrid vehicle includes an engine; a traction battery; and a controller or a vehicle control system having a controller. The controller is programmed to respond to a state of charge (SOC) of the traction battery. When the SOC is greater than a predicted SOC the controller is programmed to decrease a SOC threshold at which the engine is shut down to reduce the SOC. The SOC threshold is defined by a difference between a maximum SOC and an expected change in the SOC associated with predicted regenerative energy for a drive cycle. 本公开涉及种基于预测的再生能量的电池荷电状态目标。种混合动力车辆包括：发动机、牵引电池和控制器或具有控制器的车辆控制系统。控制器被配置为：对牵引电池的荷电状态做出响应。当牵引电池的荷电状态的大于预测的荷电状态时，控制器被配置为减小荷电状态阈值，其中，在所述荷电状态阈值，发动机被关闭以使牵引电池的荷电状态下降。预测的荷电状态由最大荷电状态与牵引电池的荷电状态的预期变化之间的差来定义，牵引电池的荷电状态的预期的变化与行驶周期的预测的再生能量相关联。