Patent ID: 9000712
Filing Date: 2015-04-07
Classification: H01M,H02J,Y02E

Abstract:
1. A method of controlling power discharged from a secondary battery that is included in an interconnected system, the interconnected system supplying power to a power system, and including a power generator that changes in output power, an electric power storage-compensation device that includes the secondary battery, and a bidirectional converter that controls charging/discharging of the secondary battery, the electric power storage-compensation device compensating for a change in output power of the power generator, and a temperature detection section that detects a temperature of the secondary battery being annexed to the secondary battery, the method comprising limiting a maximum discharge power of the secondary battery by changing a control target value of the bidirectional converter when the temperature of the secondary battery detected by the temperature detection section has exceeded a preset temperature, wherein a delay is added when setting a maximum discharge power limiter condition, wherein the control target value depends on planned power output of the interconnected system, and wherein a plurality of the preset temperatures are set so that the maximum discharge power of the secondary battery is gradually reduced as the temperature of the secondary battery increases.