Fuel cell system

Abstract

The invention discloses a fuel cell system. The electrical architecture of the fuel cell system is optimized. The fuel cell system comprises a fuel cell stack, a DC / DC converter, a central controller, a plurality of high-voltage subsystems and a plurality of low-voltage subsystems, the DC / DC converter is used for converting high-voltage electricity output by the fuel cell stack into high-voltage electricity required by the working of the high-voltage electrical subsystem; the fuel cell stack, the DC / DC converter and each high-voltage subsystem are all called high-voltage assemblies; a DC / DC step-down module and a wireless communication module are integrated in each high-voltage assembly; a low-voltage power supply and a wireless communication module are integrated in the central controller; the DC / DC voltage reduction module converts high voltage input into the high-voltage assembly into low voltage and then supplies the low voltage to the low-voltage power utilization module in the high-voltage assembly. Each high-voltage assembly is connected with the central controller through a wireless communication module, and the central controller is connected with each low-voltage subsystem through a low-voltage power supply and control wire harness.

Description

technical field [0001] The present invention relates to the technical field of energy, and more particularly, to a fuel cell system. Background technique [0002] A fuel cell is a power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy without a combustion process. Fuel cells have the advantages of high energy conversion efficiency, low operating noise and zero emissions, and can be widely used in vehicles such as automobiles, planes, trains, and stationary power stations. [0003] like figure 1 As shown, the fuel cell system is based on the fuel cell stack ① as the core, matched with a DC / DC converter ②, a central controller⑤, and multiple high-voltage subsystems (such as air subsystem, hydrogen subsystem, thermal management system, etc.)④ And a complex system formed by multiple low-voltage subsystems (such as sensors, valves, etc.) ⑥, etc. figure 1 The shown fuel cell system converts the high voltage output from t...

AI Technical Summary

Problems solved by technology

[0004] But due to figure 1 In the fuel cell system shown, a large number of wiring harnesses need to be designed, and the electrical interference problem in the system is serious. In addition, the fuel cell system is used in an open environment and the working conditions are complicated, and the number of low-voltage connectors in the low-voltage wiring harness is large, resulting in low-voltage electrical sub- The probability of component failure is high, and the reliability of the fuel cell system is limited, so it is very important to optimize the electrical architecture of the fuel cell system

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