FUEL CELL SYSTEM

• Main Authors: HORI RYOSUKE, TOMATSU JIN, TAKAHASHI MANABU
• Format: Patent
• Language: English; Japanese
• Published: 02.09.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a fuel cell system that allows a water content of a fuel cell to reach a target range in a certain period of time when power generation is stopped without constantly controlling the water balance during power generation of the fuel cell.SOLUTION: A fuel cell system includes a fuel cell, a measuring unit that measures a water content of the fuel cell, a temperature raising unit that raises the temperature of scavenging gas of the fuel cell, and a control unit that controls the scavenging of the fuel cell. When stop processing of stopping the power generation by the fuel cell is started, the control unit determines a target temperature of the scavenging gas on the basis of the water content measured by the measuring unit such that the water content reaches a target range within a preset scavenging time, raises the scavenging gas to the target temperature at the temperature rising unit, and performs scavenging with the heated scavenging gas.SELECTED DRAWING: Figure 1 【課題】燃料電池の発電中に水収支を定常的に制御することなく、発電停止時に燃料電池の含水量を一定時間で目標範囲に到達させる燃料電池システムを提供する。【解決手段】燃料電池システムは、燃料電池と、燃料電池の含水量を計測する計測部と、燃料電池の掃気ガスを昇温する昇温部と、燃料電池の掃気を制御する制御部とを備え、制御部は、燃料電池による発電を停止する停止処理を開始する場合に、予め設定された掃気時間で含水量が目標範囲に到達するように、計測部で計測された含水量に基づいて掃気ガスの目標温度を決定し、掃気ガスを昇温部で目標温度まで昇温し、昇温した掃気ガスにより掃気を実行する。【選択図】図１