Multi-fuel-cell-module-combined heat management system and method

Abstract

The invention provides a multi-fuel-cell-module-combined heat management system and method depending on fuel cell heat as liquid oxygen vaporization power. The multi-fuel-cell-module-combined heat management system and method are applicable to a fuel cell system by adopting a static drainage technology. Liquid oxygen cannot be directly utilized by the fuel cell, and the liquid oxygen can be utilized after being vaporized into oxygen by heat. According to the fuel cell module by adopting the static drainage technology, the pressure difference between an oxygen passage and a waterway is requiredto be kept stable, accurate and controllable. In order to ensure that waterway pressure of each module does not interfere with each other under the condition of multi-module combination, each fuel cell module is connected in series with two independent heat exchangers to form a single-module-level primary heat circulation loop, and the two heat exchangers connected in series with each module formtwo secondary heat circulation loops respectively, namely, the heat of the fuel cell is divided into two parts, one part is used for liquid oxygen vaporization, and the other part is dissipated through a radiator.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a thermal management system and method for a multi-fuel cell combined system using liquid oxygen as an oxidant. Background technique [0002] With the depletion of traditional energy sources such as petroleum, the use and development of new energy sources have attracted widespread attention from the society, especially the proton exchange membrane fuel cell, as a new generation of energy power, has many advantages such as quietness, environmental protection, and high energy density. , can be widely used in aerospace, navigation, automobiles, power stations, military and other fields, and is regarded as one of the main power sources for the next generation of human beings. [0003] Proton exchange membrane fuel cells use the chemical reaction of hydrogen and oxygen to generate electricity. Liquid oxygen has an ultra-high oxygen storage energy density, and is especially suita...

AI Technical Summary

Problems solved by technology

[0004] The vaporization of liquid oxygen requires heat. Although the traditional electric heating method can satisfy the vaporization of liquid oxygen, it consumes electric energy and has potential safety hazards due to the introduction of electrical heating.

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