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A fuel cell single cell and stack with enhanced temperature and humidity uniformity

A technology of fuel cells and single cells, which is applied in the direction of fuel cells, fuel cell additives, fuel cell heat exchange, etc., and can solve the problems that cannot meet the requirements of temperature and humidity uniformity, do not consider reaction inhomogeneity, gas flow and flow Large field resistance and other problems can be achieved to improve work performance and use stability, avoid uneven temperature distribution, and improve uniformity

Active Publication Date: 2019-05-07
SHANGHAI H-RISE NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the publication number CN101101992A provides a flow field plate in which the flow channels between the plates are connected in series, which can efficiently discharge reactants, products, and impurities, and prolong the life of the stack. However, in the flow field plate, the gas flow The resistance of the flow field is too large, and the inhomogeneity of the reaction is not considered
Therefore, the existing plate flow field cannot take into account the uniformity requirements of temperature and humidity, and it is difficult to meet the actual needs

Method used

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  • A fuel cell single cell and stack with enhanced temperature and humidity uniformity
  • A fuel cell single cell and stack with enhanced temperature and humidity uniformity
  • A fuel cell single cell and stack with enhanced temperature and humidity uniformity

Examples

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Effect test

Embodiment 1

[0039] like figure 1 A single fuel cell with enhanced temperature and humidity uniformity is shown, the single cell includes an anode plate 1, a cathode plate 2, and a membrane electrode assembly arranged between the anode plate 1 and the cathode plate 2, and the anode plate A plurality of anode flow channels 3 are arranged side by side on the plate 1 , the gas flow directions in two adjacent anode flow channels 3 are opposite, and a cathode flow channel 4 is provided on the cathode plate 2 .

[0040] Wherein, the anode electrode plate 1 and the cathode electrode plate 2 are both punched and formed by a stainless steel sheet with a thickness of 0.1 mm, and punched and trimmed. The anode plate 1 and the cathode plate 2 are assembled and bonded together and then laser welded to form a bipolar plate. The cathode flow channel 4 and the anode flow channel 3 are perpendicular to each other. An anode flow channel partition 101 is provided between two adjacent anode flow channels 3 ...

Embodiment 2

[0046] A single fuel cell with enhanced temperature and humidity uniformity, the single cell includes an anode plate 1, a cathode plate 2, and a membrane electrode assembly arranged between the anode plate 1 and the cathode plate 2, the anode plate 1 A plurality of anode flow channels 3 are arranged side by side, the gas flow directions in two adjacent anode flow channels 3 are opposite, and the cathode plate 2 is provided with a cathode flow channel 4 .

[0047] Wherein, the cathode flow channel 4 and the anode flow channel 3 are perpendicular to each other. An anode flow channel partition 101 is provided between two adjacent anode flow channels 3 .

[0048] On the anode plate 1, a plurality of first anode flow channels 301 and second anode flow channels 302 are arranged alternately in sequence along the width direction of the anode plate 1, and one end of the anode plate 1 is provided with a bridge connected to the first anode flow channel 301. The first anode flow channel ...

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Abstract

The invention relates to a temperature and humidity uniformity reinforced fuel cell single cell and an electric pile. The single cell comprises a positive electrode plate, a negative electrode plate and a membrane electrode assembly arranged between the positive electrode plate and the negative electrode plate; a plurality of positive electrode flowing channels are formed in the positive electrodeplate in parallel; the gas flowing directions in the adjacent two positive electrode flowing channels are opposite; negative electrode flowing channels are formed in the negative electrode plate; andthe electric pile comprises a plurality of single cells stacked in sequence. Compared with the prior art, the gas flowing directions in the adjacent two positive electrode flowing channels are opposite, so that the conditions of over-low or over-high partial temperature and humidity caused by the single gas flowing direction of the conventional flow field can be effectively relieved, the temperature and humidity difference in a gas inlet and a gas outlet can be reduced, the temperature and humidity distribution uniformity of the electric pile can be improved, and water and heat balance in theelectric pile can be ensured, thereby further improving working performance and use stability of the fuel cell; and in addition, the fuel cell single cell is easy to process and manufacture.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and relates to a single fuel cell and an electric stack with enhanced temperature and humidity uniformity. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a new type of energy device that converts chemical energy into electrical energy through the electrochemical reaction of hydrogen and oxygen. It has the advantages of high energy conversion rate, no pollution, low operating temperature, and fast start-up. The electric stack is usually composed of multiple fuel cell cells stacked and assembled, and then clamped by end plates. The single cell is composed of an anode plate, a membrane electrode assembly and a cathode plate in a "sandwich" shape. After stacking multiple layers of single cells into a stack, it can meet the needs of different voltages and output power. Among them, the membrane electrode assembly is an assembly with a three-in-one structure, which is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0258H01M8/04014H01M8/04119H01M8/04089H01M8/04291H01M8/1007H01M8/2457H01M8/2483
CPCH01M8/0258H01M8/04014H01M8/04119H01M8/04201H01M8/04291H01M8/1007H01M8/2457H01M8/2483Y02E60/50Y02P70/50
Inventor 彭林法唐嘉钰邱殿凯徐一凡易培云
Owner SHANGHAI H-RISE NEW ENERGY TECH CO LTD
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