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Fuel cell stack

A fuel cell stack and single cell technology, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve problems that affect the consistency and reliability of fuel cells, irregular front and rear alignment, stacked assembly error accumulation, etc., to reduce Effect of weight, avoiding error accumulation, ensuring reliability and consistency

Active Publication Date: 2021-07-09
FTXT ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually a fuel cell stack is composed of hundreds of bipolar plates and membrane electrode assemblies, and the stacked assembly is easy to cause error accumulation
For example, in the process of continuous accumulation from bottom to top, it is easy to appear that the left and right, front and rear alignments are not neat, which affects the consistency and reliability of the fuel cell

Method used

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Embodiment Construction

[0043] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0044] In the description of this application, it should be understood that the terms "length", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orien...

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Abstract

The invention discloses a fuel cell stack which comprises: a plurality of single cell layers, wherein each single cell layer comprises a membrane electrode assembly and a bipolar plate, the membrane electrode assemblies and the bipolar plates are alternately stacked and fixed, and each of the membrane electrode assemblies and the bipolar plates comprises a cooling liquid inlet, a cooling liquid outlet and a cooling flow field, and the cooling liquid inlet and the cooling liquid outlet are located in the two ends respectively and communicate with each other through the cooling flow field; and a water jacket assembly which comprises a water inlet jacket and / or a water outlet jacket, and the water inlet jacket and the water outlet jacket are respectively inserted into the cooling liquid inlets and the cooling liquid outlets in the plurality of single battery layers so as to form a water inlet pipeline and a water outlet pipeline. Cooling liquid flows through each membrane electrode assembly in the plurality of single cell layers and the cooling flow field of the bipolar plate from the water inlet pipeline to the water outlet pipeline. According to the device, the situation that the fuel cell fails due to corrosion caused by contact between the metal bipolar plate and cooling liquid is reduced.

Description

technical field [0001] The present application mainly relates to the field of fuel cells, in particular to a fuel cell stack. Background technique [0002] Proton exchange membrane fuel cell (PEMFC for short) is a kind of fuel cell, which is equivalent to the "reverse" device of water electrolysis in principle. Its single cell is composed of anode a1, cathode a2 and proton exchange membrane a3. The anode a1 is the place where the hydrogen fuel is oxidized, and the cathode a2 is the place where the oxidant is reduced. as an electrolyte. Since the proton exchange membrane a3 can only conduct protons, hydrogen ions (ie protons) can directly pass through the proton exchange membrane to reach the cathode, while electrons can only reach the cathode through an external circuit. Direct current is generated when electrons flow through an external circuit to the cathode. [0003] The stack is composed of multiple single cells stacked in series. The bipolar plates and the membrane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258H01M8/0265H01M8/1004
CPCH01M8/0265H01M8/0258H01M8/1004Y02E60/50
Inventor 王鹏刘栋栋杨东胜龚正伟
Owner FTXT ENERGY TECH CO LTD
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