A kind of fuel cell system and low temperature rapid start method

Abstract

The invention relates to the field of fuel cells, in particular to a low-temperature quick-start device for fuel cells. Combustion chamber is used to provide heat for reforming chamber; reforming chamber is used to convert methanol into hydrogen; electric stack is used to convert hydrogen chemical energy into electrical energy; solenoid valve is used to control hydrogen flow; low-pressure hydrogen storage tank is used to store Hydrogen; the pressure sensor is used to detect the hydrogen pressure of the low-pressure hydrogen storage tank; the methanol supply module is used to provide methanol for the combustion chamber and the reforming chamber; the control module is used to control the opening of the solenoid valve, read the hydrogen pressure, adjust the combustion chamber, and reform Chamber methanol supply. The invention stores a part of hydrogen by adding a low-pressure hydrogen storage tank, and supplies the hydrogen to the combustion chamber when the fuel cell system is started, especially at low temperature, so that the temperature of the combustion chamber can be rapidly raised to the temperature that can catalyze methanol combustion, and the start-up time of the fuel cell is shortened.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a low-temperature quick-start device for fuel cells. Background technique [0002] In the past, most fuel cell start-up systems used electric heating to start. The start-up time was long, the heating was not uniform, and a large amount of electric energy was consumed. Especially when starting at low temperature, it was difficult to heat the fuel cell to a temperature suitable for operation. The lithium battery will be exhausted before the temperature suitable for operation. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention proposes a hydrogen storage structure that adds a solenoid valve, a low-pressure hydrogen storage tank, and a pressure sensor at the hydrogen outlet of the stack to accelerate the start of the next fuel cell and solve the low-temperature start-up problem of the fuel cell. It also provides an algorithm for calculat...

AI Technical Summary

Problems solved by technology

[0002] In the past, most fuel cell start-up systems used electric heating to start. The start-up time was long, the heating was not uniform, and a large amount of electric energy was consumed. Especially when starting at low temperature, it was difficult to heat the fuel cell to a temperature suitable for operation. Drain the lithium battery before the temperature suitable for operation

Images