A fuel battery flow guiding polarized plate without water blockage

A fuel cell and guide plate technology, which is applied to fuel cells, fuel cell parts, battery electrodes, etc., can solve the problems of water not easily discharged, not smooth, and uneven fluid flow, etc. uniform effect

Active Publication Date: 2007-12-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design feature of this deflector is that the fluid holes of the bipolar plate are single inlet, double outlet or multiple outlets. When in use, the bipolar plate is perpendicular to the ground plane, and the fluid outlet holes distributed in the lower corner of the bipolar plate The position of the inlet is low, and it is discharged along the direction of gravity, so it is relatively smooth and not easy to block water; the position of the outlet fluid hole distributed on the corner of the bipolar plate is lower than that of the single hole, and it is discharged against the direction of gravity, so the water is not easy to discharge. Unsmooth, prone to water blockage, resulting in uneven fluid flow across the board

Method used

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  • A fuel battery flow guiding polarized plate without water blockage
  • A fuel battery flow guiding polarized plate without water blockage
  • A fuel battery flow guiding polarized plate without water blockage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] As shown in Figure 4, a kind of diversion pole plate of fuel cell that is not easy to block water, this diversion pole plate is diversion bipolar plate, and described diversion bipolar plate is made of front guide air channel plate, back side guides hydrogen gas The air-guiding chute plate is composed of a chute plate and an intermediate cooling fluid interlayer. The air-guiding chute plate is provided with fluid holes with 7 air inlets in a single hole and 8 air outlets in a double hole. The air-guiding flow grooves are separated into four branch air-guiding flow grooves 9 in parallel straight-line shape, and the branch air-guiding flow grooves 9 are collected into the six air-guiding flow grooves 10 at the other end, and the air-guiding flow grooves are connected to each other through a plurality of parallel connecting grooves 11. The launders 10 are connected in one-to-one correspondence, and the air-guiding launders 10 enter the fluid holes 8 of the air respectively;...

Embodiment 2

[0044] As shown in Fig. 5, a kind of diversion pole plate of fuel cell that is not easy to block water, this diversion pole plate is diversion bipolar plate, described diversion bipolar plate is made up of front guide air channel plate, back side guide hydrogen gas The air guide plate is composed of a flow channel plate and an intermediate cooling fluid interlayer. The air guide flow channel plate is provided with a fluid hole with a single hole for air inlet and a double hole for air outlet. The air inlet fluid hole is divided into six air guide flow channels. Each flow channel is divided into four branch air flow channels in a parallel straight-line shape, and the branch air flow channels are collected to the six air guide channels at the other end, and are connected to the corners of the bipolar plate through a plurality of parallel connection slots 12. A plurality of diversion grooves at the air outlet fluid holes are connected, and a parallel connection groove 13 is used t...

Embodiment 3

[0046] As shown in Fig. 6, a kind of diversion pole plate of fuel cell that is not easy to block water, this diversion pole plate is diversion bipolar plate, described diversion bipolar plate is made up of front guide air channel plate, back side guide hydrogen gas The flow channel plate and the intermediate cooling fluid interlayer are composed. The air guide channel plate is provided with a fluid hole with a single hole for air inlet and a double hole for air outlet. The fluid hole for air inlet is divided into six air guide flow channels. The air flow grooves are divided into four branch air flow grooves which are parallel and straight. After passing through the flow field, the branch air flow grooves are vertically connected with the wide grooves 14, and the wide grooves 14 are respectively connected with two air outlet holes. ; The hydrogen-conducting air flow groove plate is provided with single-hole inlet and double-hole outlet hydrogen fluid holes, and the hydrogen-infl...

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PUM

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Abstract

The invention relates to fuel battery guiding board which is not easy to stop water, the guiding board is guiding two-way board, said guiding two-way board comprises positive air guiding groove, negative hydrogen guiding groove, middle cooling flow interlayer, said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for air or hydrogen, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for cooling liquid, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can make liquid flow on liquid field evenly, freely; jam of guiding groove can be avoided.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a fuel cell guide plate which is not prone to water blocking. Background technique [0002] An electrochemical fuel cell is a device that converts hydrogen fuel and oxidant into electrical energy and reaction products. The internal core component of the device is the membrane electrode (Membrane Electrode Assembly, referred to as MEA). The membrane electrode (MEA) is composed of a proton exchange membrane and two porous conductive materials, such as carbon paper, sandwiched between the two sides of the membrane. On the two boundary surfaces of the membrane and the carbon paper, there are even and finely dispersed catalysts for initiating electrochemical reactions, such as metal platinum catalysts. Conductive objects can be used on both sides of the membrane electrode to draw the electrons generated during the electrochemical reaction through an external circuit to form a current loop. [0003] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/0202H01M8/0258
CPCY02E60/50
Inventor 胡里清李丽李拯章波
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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