FUEL CELL SYSTEM

• Main Author: OURA JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 07.02.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a technique capable of avoiding overcharging of a secondary battery.SOLUTION: A fuel cell system includes: a fuel cell supplying power to at least one load; a secondary battery connected in parallel to the fuel cell while a converter does not intervene therebetween, the secondary battery being passively charged or discharged depending on the output voltage of the fuel cell; and a controller monitoring the output voltage of the fuel cell and executing a protection operation mode when the voltage of the fuel cell exceeds a first threshold. In the protection operation mode, an operation command corresponding to a predetermined minimum power consumption is given to part or all of the at least one load.SELECTED DRAWING: Figure 2 【課題】二次電池の過充電を回避し得る技術を提供する。【解決手段】燃料電池システムは、少なくとも一つの負荷に電力を供給する燃料電池と、燃料電池にコンバータを介さずに並列に接続されており、燃料電池の出力電圧に応じて受動的に充電又は放電される二次電池と、燃料電池の出力電圧を監視するとともに、燃料電池の電圧が第１の閾値を上回るときに保護動作モードを実行するコントローラと、を備える。保護動作モードでは、少なくとも一つの負荷の一部又は全部に対して、所定の最低消費電力量に対応する動作指令が与えられる。【選択図】図２