FUEL BATTERY SYSTEM

• Main Authors: NAKAMURA KEN, KAKIMI YOSUKE, AKEMOTO HITOSHI, TOMIMOTO HISAYA, TACHIKAWA KATSUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 07.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To stabilize power generation of a fuel battery stack under an environment in which the concentration of oxygen in the fuel battery system easily drops.SOLUTION: A fuel battery system 1 includes: a fuel battery stack FCS formed by depositing a plurality of fuel battery cells C; a cell voltage detection unit VD for detecting the respective voltages V1 to Vn of the fuel battery cells C1 To Cn; and a control unit 3 for controlling operations of a fan F according to the temperature Tfcs of the fuel battery stack FCS in a normal mode and driving the fan F in a ventilation mode. The control unit 3 shifts the normal mode to the ventilation mode when the voltage V of the fuel battery stack FCS becomes a threshold value Vth1 or smaller.SELECTED DRAWING: Figure 1 【課題】燃料電池システム内の酸素濃度が比較的低くなり易い環境下において、燃料電池スタックの発電を安定させる。【解決手段】複数の燃料電池セルＣを積層させて構成される燃料電池スタックＦＣＳと、燃料電池セルＣ１～Ｃｎのそれぞれの電圧Ｖ１～Ｖｎを検出するセル電圧検出部ＶＤと、ファンＦと、通常モードにおいて燃料電池スタックＦＣＳの温度Ｔｆｃｓに応じてファンＦの動作を制御し、換気モードにおいてファンＦを駆動させる制御部３とを備えて燃料電池システム１を構成し、制御部３は、燃料電池スタックＦＣＳに関する電圧Ｖが閾値Ｖｔｈ１以下になると、通常モードから換気モードに遷移させる。【選択図】図１