Control system and control method of combined system having secondary battery and generator

U.S. Patent Number: 6388421

Abstract: A control system and a control method of a combined system having a secondary battery 15 and a fuel cell power generation system 12 are disclosed. wherein a vehicle controller 20 repeats a secondary battery-charging running mode wherein electric power output of the power generation system 12 is supplied to the secondary battery 15 and a motor 11, and a secondary battery-discharging running mode wherein electric power output of the power generation system 12 and electric power output discharged from the secondary battery 15 are supplied to the motor 11. In such a control, the amounts of electric power output of the power generation system 12 and electric power output discharged from the secondary battery 15 are set to values to provide the maximum total efficiency that is computed in conjunction with a charging efficiency of the secondary battery 15 during the secondary battery-charging running mode.

Inventors: Abe; Takaaki (Kanagawa-ken, JP)

Assignee: Nissan Motor Co., Ltd. (Yokohama, JP)

Application Number: 09/814,827

Issued: 2002-05-14

Expired: 2006-05-14

Classes: 320/104 ; 320/132

Field of search: 320/103,104,132 180/65.1,65.2,65.3,65.4 340/635,636 429/61,90

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