FUEL BATTERY SYSTEM AND FUEL BATTERY SYSTEM CONTROL METHOD

• Main Author: AKEMOTO HITOSHI
• Format: Patent
• Language: English; Japanese
• Published: 10.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; VEHICLES IN GENERAL

To suppress increase in a frequency of moving a mobile body to a hydrogen station.SOLUTION: A fuel battery system comprises a fuel battery stack, a hydrogen tank, a water storage tank, and a controller. The hydrogen tank stores hydrogen. The water storage tank stores generated water. The water storage tank's volume is set so that an amount of generated water calculated on the basis of a recovery ratio and an amount of hydrogen capable of being stored in the hydrogen tank can be housed. The recovery ratio is calculated using output current of the fuel battery stack and a temperature of a coolant for cooling the fuel battery stack. The controller detects an amount of the hydrogen stored in the hydrogen tank. The controller adjusts an amount of generated water so that the amount of generated water in the water storage tank at a charging necessary time point at which the amount of hydrogen stored in the hydrogen tank reaches the lower limit is lower than a predetermined value.SELECTED DRAWING: Figure 4 【課題】移動体を水素ステーションに移動させる頻度の増加を抑制すること。【解決手段】燃料電池システムは、燃料電池スタックと、水素タンクと、貯水タンクと、制御装置と、を備える。水素タンクは、水素を貯留する。貯水タンクは、生成水を貯留する。貯水タンクの容積は、回収率と、水素タンクに貯留可能な水素の量とに基づき算出された生成水の量を収容可能とするように設定されている。回収率は、燃料電池スタックの出力電流及び燃料電池スタックを冷却する冷媒の温度によって算出される。制御装置は、水素タンクに貯留された水素の量を検知する。制御装置は、水素タンクに貯留された水素が下限に達する充填必要時点での貯水タンク内の生成水の量が所定値未満となるように、生成水の量を調整する。【選択図】図４