High-temperature fuel cell stack design

Abstract

The invention discloses a high-temperature fuel cell stack design which comprises a heat insulation shell, a cell group is placed in the middle of the interior of the heat insulation shell, the cell group is connected with the heat insulation shell through a limiting fixing frame, and a first heat cavity and a second heat cavity are formed in the middle of the space between the cell group and the heat insulation shell. A gas inlet cavity is formed in one end of the battery cell group, and a tail gas cavity is formed in the other end of the battery cell group. The battery pack has the beneficial effects that the battery pack has good sealing and heat insulation effects, heat loss can be effectively avoided, so that the energy conversion efficiency is effectively improved, energy loss is avoided, the battery pack can be well supported and fixed through the limiting fixing frame, damage to internal elements in the carrying and transporting process is avoided, thermal expansion stress and strain can be effectively absorbed, and the service life of the battery pack is prolonged. The structure stability of the battery cell group can be maintained, the reaction temperature of the battery cell group can be monitored in real time, and the influence of too high or too low temperature on the performance stability of the battery cell group is avoided.

Description

technical field [0001] The present invention relates to the technical field of fuel cells, in particular, to a design of a high temperature fuel cell stack. Background technique [0002] A solid oxide fuel cell is a power generation device that uses solid oxide as an electrolyte membrane to efficiently and cleanly convert the chemical energy of fuel into electrical energy through electrochemical reactions. In addition to the advantages of high energy utilization and environmental friendliness, solid oxide fuel cells have many special advantages: it can not only use hydrogen as fuel, but also use abundant and cheap natural gas, liquefied natural gas, etc. Gas, coal gas, biomass gas and synthesis gas (a mixture of hydrogen and carbon monoxide) are used as fuels. The power generation efficiency of the solid oxide fuel cell body can reach more than 50%, and the cogeneration efficiency is higher than 80%, which can greatly reduce carbon dioxide emissions. [0003] The goal of t...

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Problems solved by technology

[0004] The design of the existing high-temperature fuel cell stack is unreasonable, and the heat loss is relatively serious, which affects the energy conversion efficiency. In addition, the protection effect on the battery pack is weak, and it is easy to cause damage to the battery pack. The monitoring and control of temperature Can not reach the ideal range, affect the use effect

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