Fuel cell stack and proton exchange membrane fuel cell
A fuel cell stack and medium technology, applied in fuel cells, fuel cell additives, circuits, etc., can solve problems such as water residue, uneven reaction gas, and long purging time, so as to improve efficiency and reduce the risk of icing , The effect of reducing the difficulty of drainage and the risk of flooding
Active Publication Date: 2021-10-22
北京氢沄新能源科技有限公司 +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the process of circulation, the reaction gas in the flow channel is not uniform, the interval of tail discharge is short, and the system efficiency is low
In a low temperature environment, when the hydrogen cycle is involved in the shutdown process, liquid water will flow through the stack repeatedly, resulting in long purge time and hidden dangers of water residue
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0039] In this disclosure, unless stated otherwise, the orientation words used such as "upper", "lower", "top", and "bottom" are defined by the usage habits of fuel cell stacks, specifically refer to Figure 5 Orientation shown on the drawing. "Inner" and "outer" are based on the contours of the corresponding parts. In addition, the terms "first", "second", and the like used in the present disclosure are for distinguishing one element from another, and do not have sequence or importance. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a fuel cell stack and a proton exchange membrane fuel cell, the fuel cell stack comprises a gas-liquid separation structure communicated with a hydrogen inlet of an anode, the gas-liquid separation structure is used for separating a gas-liquid mixed medium from the hydrogen inlet into gas and liquid water, the tail end of the gas-liquid separation structure forms a gas flow passage and a liquid flow passage respectively and the gas flow passage and the liquid flow passage are connected in parallel and jointly lead to the hydrogen outlet. By arranging the gas-liquid separation structure, the fuel cell stack can realize effective separation of gas and liquid through parts of the fuel cell stack, so that the gas enters a reaction area through a gas flow passage, liquid water is directly discharged from a hydrogen outlet through a liquid flow passage, and the liquid water in a circulating medium is prevented from entering a reaction flow field; the drainage difficulty and the water logging risk of the anode of the polar plate are reduced, the low-temperature purging efficiency is improved, and the freezing risk in a liquid water flow field is reduced.
Description
technical field [0001] The present disclosure relates to the technical field of proton exchange membrane fuel cells, in particular, to a fuel cell stack and a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy through an electrochemical reaction. It has the advantages of high energy conversion rate, no pollution, and low noise. During the reaction process, the product is only water, which is generated at the cathode of the fuel cell, and part of the water will permeate from the cathode side to the anode side through the membrane electrode. As the reaction proceeds, part of the generated water will form a liquid state and flow to the diffusion layer and flow channel on both sides of the cathode and anode. [0003] In the related art, the hydrogen can be recycled by using a circulation system, so as to avoid the low efficiency of the sy...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04119H01M8/04089H01M8/04082
CPCH01M8/04156H01M8/04201H01M8/04097Y02E60/50
Inventor 张彦辉汪成伟
Owner 北京氢沄新能源科技有限公司