Vehicle power relay startup control and diagnosis

• Main Authors: SHIELDS MARK, VRAMPAS GEORGE HART, LEE JOSEPHINE S, SINGH JAGMOHAN, TREHARNE WILLIAM DAVID
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

The invention relates to vehicle power relay startup control and diagnosis. A hybrid vehicle includes an isolation switch disposed between a first bus that is electrically coupled to a starter for anengine and a second bus that is electrically coupled to a power converter and accessory loads. The hybrid vehicle includes a controller programmed to normally command the switch closed, and, in response to expiration of a predetermined time interval without starting the engine, command the switch to open for a predetermined duration to perform diagnostics on the isolation switch. 本公开涉及车辆功率继电器的启动控制和诊断。种混合动力车辆包括隔离开关，所述隔离开关设置在第总线与第二总线之间，其中，所述第总线电连接到发动机的起动机，所述第二总线电连接到电力转换器和附件负载。所述混合动力车辆包括控制器，所述控制器被配置为命令所述开关常闭，并且响应于预定时间间隔期满而未起动发动机，命令所述开关断开持续预定持续时间，以执行对所述隔离开关的诊断。