High voltage battery charger and methods of operation

• Main Authors: KUMAR KEITH A, ASSENMACHER MICHAEL A, VALLENDER JOSHUA A, ROTAY ROBERT M
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A high voltage battery charger converts an AC input into a DC output. A controller is configured to calculate an efficiency of the high voltage battery charger, compare the calculated efficiency to a first threshold value, and signal a fault in response to the calculated efficiency being less than the first efficiency threshold value. Despite the fault, the battery charger keeps charging if the calculated efficiency and/or an average efficiency is not less than a second efficiency threshold value. 高压电池充电器将AC输入转换为DC输出。控制器被配置为计算高压电池充电器的效率，将计算的效率与第阈值进行比较，并且响应于所计算的效率小于第效率阈值而以信号表示故障。尽管存在故障，如果计算的效率和/或平均效率不小于第二效率阈值，则电池充电器保持充电。