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A portable fuel cell system and its control method

A fuel cell system and control method technology, which is applied in the fields of fuel cell control, fuel cells, fuel cell additives, etc., can solve the problems of inconvenient daily maintenance and complex structure, and avoid single power supply mode, simple system structure, etc. The effect of high fuel efficiency

Active Publication Date: 2021-03-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Two energy storage components, two independent charging circuits, the structure is relatively complicated
The second energy storage component is directly connected to the constant power charging circuit, which is not very convenient for daily maintenance

Method used

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  • A portable fuel cell system and its control method
  • A portable fuel cell system and its control method
  • A portable fuel cell system and its control method

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Embodiment Construction

[0037] The present invention proposes a fuel feed concentration control method for a fuel cell system fed with liquid fuel. The present invention will be described in detail below with reference to the drawings and examples, but the present invention is not limited to the following examples.

[0038] figure 1 It is a schematic flow chart of a portable fuel cell composite power supply system provided by the present invention.

[0039] Among them, 101 is the fuel cell stack. The fuel enters from the anode of the stack, and the electrochemical oxidation reaction occurs to generate carbon dioxide, protons and electrons. water. 102 is a temperature sensor, which detects the temperature of the stack in real time. 103 is a fan whose start and stop can be used to adjust the condensation efficiency of the condenser. 104 is a condenser, which is used to condense the water vapor at the outlet of the cathode. 105 is a water separator, which is used to separate the condensed water from...

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Abstract

A portable fuel cell system comprises a fuel cell stack, an auxiliary component, a system control unit and an energy storage component. The system is started through the energy storage component, andelectric energy generated by the fuel cell stack is stored in the energy storage component through the charging circuit. The system has a charging mode and a power supply mode. The maximum output power of the stack is limited by the charging circuit, and the power change of the load is quickly responded by the energy storage component. The energy storage component is connected with other parts through the connector, can be integrated with other parts, and can also be independently placed. The system is simple in structure, long in service life of the stack, and very suitable for a portable load powered by a battery.

Description

technical field [0001] The invention relates to a portable fuel cell system and a control method thereof. Background technique [0002] A fuel cell is an electrochemical device that directly converts the chemical energy of fuel into electrical energy. It has the advantages of high efficiency, environmental friendliness, quietness and high reliability. However, compared with other types of batteries, fuel cells have an insurmountable shortcoming, that is, the output voltage of fuel cells decreases rapidly with the increase of output current. In practical applications, fuel cells usually form a composite power supply system with secondary batteries such as lithium batteries and lead-acid batteries. The composite power supply system can make use of the respective advantages of fuel cells and secondary batteries, make up for their own deficiencies, and better provide electric energy for loads. For some discontinuously working loads, or loads with a large difference between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04298H01M8/04302H01M8/04537H01M8/04992
CPCH01M8/04298H01M8/04559H01M8/04992H01M8/04302Y02E60/50
Inventor 孙海秦兵孙公权麻胜南
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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