Distributed air-cooled fuel cell systems and spacecraft

Abstract

The application discloses a distributed air-cooled fuel cell system and a spacecraft, the system includes: a hydrogen storage module, a fuel cell module, an electronic control module and a first temperature sensor, wherein the first temperature sensor is used to monitor the ambient temperature of the system The hydrogen storage module is used to supply low-pressure hydrogen to the fuel cell module; the fuel cell module includes at least three air-cooled hydrogen fuel cells connected in series and parallel, each battery includes a second temperature sensor and a fan with adjustable speed and steering; The electronic control module includes a controller, which is located at the center of the system. The controller is used to adjust the steering of each fan according to the ambient temperature, and to perform closed-loop control on the speed of the fan according to the operating temperature and power generation of each battery. The system combines the environmental characteristics of the internal battery and its own thermal management requirements to perform multi-objective closed-loop speed control on the fan, and controls the fan steering according to the ambient temperature, improving the overall power generation output efficiency of the system.

Description

technical field [0001] The present application relates to the technical field of proton exchange membrane fuel cells, in particular to a distributed air-cooled fuel cell system and spacecraft. Background technique [0002] At present, air-cooled hydrogen fuel cell systems are increasingly widely used in aerospace and other fields due to their advantages of high-quality power density, zero pollution and long battery life. In spacecraft such as UAVs, since the layout of the air-cooled fuel cell power system must match the cabin of the spacecraft, it is often restricted by the space layout and gas flow characteristics. The thermal management system of the air-cooled fuel cell monitors the ambient temperature and the stack temperature, and controls the heat dissipation of the air-cooled fuel cell in combination with factors such as solid-state hydrogen storage heat dissipation and power regulation. [0003] In related technologies, the thermal management system of air-cooled fu...

AI Technical Summary

Problems solved by technology

The system combines the installation environment characteristics of the internal fuel cell sub-modules and the thermal management requirements of the battery itself, and performs multi-objective closed-loop speed control on the fan to achieve high-efficiency output of the fuel cell system as a whole. The monitoring and control of fan steering realizes the comprehensive management of the overall temperature of the power system, which solves the problem that the power generation efficiency of each subunit is too large due to environmental differences in the actual operation of the distributed air-cooled fuel cell power system, which affects the overall stable output of the system.

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