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Integration method of solid oxide fuel cell stack based on symmetrical double-cathode structure

A technology of fuel cell stacks and solid oxides, which is applied in the direction of fuel cells, circuits, and electrical components. It can solve problems such as difficulty in assembly and disassembly, impact on battery sealing performance, and trapezoidal stacks, and achieve sealing difficulty and assembly Reduced difficulty, reduced difficulty in battery production, and ease of installation and debugging

Active Publication Date: 2021-02-02
浙江氢邦科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the "tiny thickness difference" mentioned after stacking multiple cells will be amplified by stacking, and finally lead to a considerable difference in the thickness of the cell stack, which is mainly manifested as uneven, twisted, uneven heights, and more serious will cause the stack to trapezoid
Such a battery stack is difficult to assemble and disassemble, and at the same time affects the sealing performance of the battery
In addition, during use, one of the single cells ruptures or fails, causing other single cells to rupture and fail

Method used

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  • Integration method of solid oxide fuel cell stack based on symmetrical double-cathode structure
  • Integration method of solid oxide fuel cell stack based on symmetrical double-cathode structure

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. It should be noted that the following embodiments are intended to facilitate understanding of the present invention, but do not limit it in any way.

[0024] figure 1 Reference signs in: 1. mask; 2. second seal; 3. cathode pressure plate A; 4. cathode current terminal; 5. first end cover; 6. second end cover; 7. pressure seat ; 8, conductive rod; 9, pipeline; 10, gland; 11, mounting screw; 12, sealing gasket; 13, solid oxide fuel cell unit A with symmetrical double cathode structure; Pin; 16. Anode current terminal; 17. Mounting screw; 18. Cathode pressure plate B; 19. Pressure screw; 20. Cathode connection unit A; 21. Cathode connection unit B; 22. Symmetrical double cathode structure solid oxide Fuel cell unit B; 23. Import and export.

[0025] In this embodiment, the solid oxide fuel cell unit with a symmetrical double-cathode structure...

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Abstract

The invention provides an integration method of a solid oxide fuel cell stack based on a symmetrical double-cathode structure. According to the method, cathode layers of two adjacent symmetrical double-cathode structure solid oxide fuel cell units A and B are oppositely arranged, a cathode connecting piece is arranged between the cathode layers of the two adjacent symmetrical double-cathode structure solid oxide fuel cell units A and B, and the cathode connecting piece is a flexible conductive connecting piece. Therefore, the distance between the cell units can be adjusted during assembly, sothat the external dimensions of cell stacks are consistent, and the cell stacks are convenient to install and debug; meanwhile, the cathode surfaces of all the cell units can be well attached, so thatthe contact resistance is reduced, and the output power of the cell stacks is improved; and moreover, a cell unit body can be prevented from being damaged during mounting and dismounting, can be repeatedly dismounted and recycled, and therefore, the integration method has a market application prospect.

Description

technical field [0001] The invention relates to the technical field of solid oxide fuel cells, in particular to an integration method of a solid oxide fuel cell stack based on a symmetrical double-cathode structure. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is an energy conversion device that can directly convert chemical energy into electrical energy. SOFC has the advantages of high energy conversion efficiency and environmental friendliness, so it has received extensive attention from researchers. [0003] The basic structure of SOFC includes a porous anode, a porous cathode, and a dense electrolyte layer. After the fuel is fed into the anode and the oxidant gas is fed into the cathode, an electrochemical reaction will occur at the three-phase interface between the electrolyte and the electrode to generate electrons, and the electrons will form a discharge circuit through an external circuit to generate electricity and heat. In practical applications, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/2425H01M8/2465H01M8/248H01M8/0276H01M8/0297
CPCH01M8/2425H01M8/2465H01M8/248H01M8/0276H01M8/0297Y02E60/50
Inventor 叶青官万兵杨钧王建新
Owner 浙江氢邦科技有限公司
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