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Serial battery for passive self-breathing direct methanol fuel cell

A technology of methanol fuel cells and series-connected battery packs, which is applied to fuel cell grouping, fuel cells, circuits, etc., can solve the problems of unsuitable battery series connection and large plane area, and achieve novel structure, small plane area and large contact area. Effect

Inactive Publication Date: 2007-11-14
HARBIN INST OF TECH
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Problems solved by technology

[0003] South Korea's Samsung has also produced a passive direct methanol fuel cell stack. Its structure is that each single cell is arranged in sequence in the horizontal direction, and then the cathodes and anodes of two adjacent single cells are connected respectively to achieve the purpose of connecting the single cells in series. , but this structure occupies a large plane area and is not suitable for connecting batteries in series with a large number of cells

Method used

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  • Serial battery for passive self-breathing direct methanol fuel cell
  • Serial battery for passive self-breathing direct methanol fuel cell

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Embodiment Construction

[0017] The utility model is described in more detail below in conjunction with accompanying drawing example:

[0018] Combined with Figure 7, the passive self-breathing direct methanol fuel cell series battery pack consists of a battery anode 1 and a battery cathode 2; at the same time combined with Figure 1, the battery anode is installed on the plexiglass 3, and the four corners of the plexiglass on which the battery anode is installed have four There are two screw holes 4. There are two shunt tube jacks in the middle of the two screw holes on the opposite side. 5. There is a square in the middle that is used as a methanol storage chamber. The through hole 7 of the chamber; simultaneously with Fig. 2, the battery cathode is installed on the plexiglass 8, and there are four screw holes 9 at the four corners of the plexiglass for installing the battery cathode, and there are two shunt tubes in the middle of the two screw holes on the opposite side There is a square hole 11 as ...

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Abstract

The invention provides a series group battery of passive self-breathing direct methanol fuel battery, where the anodes of adjacent cells share a methanol liquor storage cavity, and the cathodes of the adjacent cells share a gas storage cavity, and the cathode and anode plates which need connecting in series are replaced with stainless steel netting, one side of which acts as the anode plate for a cell and the other side of which acts as the cathode plate for the adjacent cell, filler piece is placed between the stainless steel netting and organic glass equipped with methanol liquor storage cavity, membrane electrode assembly of the fuel battery is placed between the anode and cathode plates of each cell, the methanol solution is distributed through shunt pipe into each liquor storage sub cavity, and the whole group battery is screwed with four screws. And its advantages: this design has novel structure, is easy to install, and reduces the bulk of the series group battery on the premise of the same number of cells, the contact area of reactant methanol and anodes is large so that the reaction is complete.

Description

1. Technical field [0001] The field that the present invention relates to is a fuel cell, specifically a passive self-breathing direct methanol fuel cell series battery stack structure design. 2. Background technology [0002] Direct methanol fuel cells (DMFCs) have inherent advantages as a miniature portable energy source. High specific energy and energy conversion efficiency are the main reasons for interest. At the same time, the fixed external structure and the liquid fuel that can be filled at any time also provide convenient conditions for users. It has simple structure, short response time and convenient operation. Compared with the active direct methanol fuel cell, the passive self-breathing direct methanol fuel cell has a large contact area and a complete reaction. It does not need an external power source for liquid feeding, but only needs a methanol liquid storage chamber. The oxygen required for the cathode reaction comes from air, and That is, the cathode doe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/24H01M8/2465
CPCY02E60/50
Inventor 刘晓为张宇峰张鹏张博索春光
Owner HARBIN INST OF TECH
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