Patent ID: 8110312
Filing Date: 2012-02-07
Classification: B60L,H01M,Y02E,Y02T

Abstract:
1. A fuel cell system connected with a load, comprising: a fuel cell; a secondary battery electrically connected with the fuel cell; a temperature detector arranged to detect a temperature of the fuel cell; and a calculation unit arranged to calculate a threshold value that represents energy necessary to start the fuel cell system, based on the temperature of the fuel cell detected by the temperature detector; wherein the threshold value is used to determine a start-up mode of the fuel cell system; and the fuel cell system further comprises a memory arranged to store a value of low-consumption electric power necessary to start the fuel cell system in a low consumption mode, wherein the calculation unit includes a time calculation unit arranged to determine a necessary time for the fuel cell to attain a target temperature based on the temperature of the fuel cell detected by the temperature detector, and a threshold value calculation unit arranged to calculate another threshold value representing low-consumption energy necessary to start the fuel cell system in the low consumption mode based on the necessary time and the low-consumption electric power stored in the memory, and the another threshold value is included in the threshold value and used to determine whether or not to start the fuel cell system.