Power supply system and method of controlling the same

Abstract

A power supply system using a fuel cell comprises a chemical reaction section (100) including, a evaporation section (103, 112, 114) that receives a power generation fuel and water supplied to it, heating at least the water supplied to it to evaporate it and a reaction section (105, 107) that generates a power generation gas on the basis of the steam generated by the evaporation section and the power generation fuel, a fuel supply section (P1, V1) that supplies the power generation fuel to the chemical reaction section, a water supply section (P2, V2) that supplies water to the chemical reaction section and a control section (130) that controls the operation of the system so as to stop supply of the power generation fuel from the fuel supply section to the chemical reaction section when the evaporation section is not in a condition suitable for evaporating operation. The power supply system suppresses any rise of the carbon monoxide concentration at the time of starting and stopping the system and prevents the power generation performance of the system from degrading.

Description

technical field [0001] The invention relates to a power supply system, a method of controlling the power supply system and an electronic device comprising the power supply system. In particular, the present invention relates to a power supply system using a fuel cell and a method of controlling such a power supply system. Background technique [0002] Various chemical batteries (cells) have been and are increasingly used in daily life and in many different industrial fields. Batteries include primary batteries such as alkaline dry batteries and manganese dry batteries, and secondary batteries such as nickel-cadmium batteries, nickel-hydrogen batteries, and lithium-ion batteries. Meanwhile, research and development of power supply systems using fuel cells in practical applications have been carried out because fuel cells only slightly affect the environment (bring only a small burden on the environment) and can achieve a high energy utilization rate of about 30% to 40%. It ...

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Problems solved by technology

However, from a cost point of view, providing such a design of a CO concentration meter and a switching valve is disadvantageous (higher cost) and requires an increase in the number of parts, which is not conducive to downsizing

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