An integrated fuel cell power supply system

Abstract

The invention provides an integrated fuel cell power supply system, which is improved in integrated level and reduced in size. The system comprises a fuel cell unit (4), a main controller (16), a charging power module (15), a discharge power module (18) and an accumulator unit (5); one end of the charging power module (15) is connected with the fuel cell unit (4), and the other end of the charging power module (15) is connected with the accumulator unit (5); one end of the discharge power module (18) is connected with the accumulator unit (5), and the other end of discharge power module (18) is connected with a load (6); the logic control of both the charging power module (15) and the discharge power module (18) is finished by the main controller (16); the main controller (16) controls the charging power module (15) to charge the accumulator unit (5) with the fuel cell unit (4); the main controller (16) controls the discharge power module (18) to discharge from the accumulator unit (5) to the load (6).

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an integrated fuel cell power supply system. Background technique [0002] A fuel cell is an electrochemical device that directly converts the chemical energy of reactants into electrical energy. Its single cell is composed of positive and negative electrodes (the negative electrode is the fuel electrode and the positive electrode is the oxidant electrode) and the electrolyte. Fuel cells include phosphoric acid fuel cells (PAFCs), proton exchange membrane fuel cells (PEMFCs), and the like. Such as figure 1 As shown, in the traditional fuel utilization method, heat exchange is required, such as thermal power generation, the chemical energy of coal, oil, natural gas and other fuels needs to be converted into thermal energy, thermal energy is converted into kinetic energy, and kinetic energy is converted into electrical energy. Another example is the internal combustion engine drive sys...

AI Technical Summary

Problems solved by technology

Existing fuel cell systems mostly use primary / secondary DC / DC devices to realize the voltage conversion of fuel cells and batteries, and the controllers of each module in the system are independent of each other, so it is impossible to realize the same logic control of fuel cells and batteries

This not only increases the communication links between modules and reduces the reliability of data transmission, but also forms a fuel cell system with a complex structure, large volume and weight

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