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Power supply system of direct liquid fuel battery and its operation method

A liquid fuel cell and power system technology, applied in fuel cells, fuel cell additives, fuel cell components, etc., can solve problems such as system complexity, and achieve the effect of being easy to carry and preventing reverse voltage.

Active Publication Date: 2008-05-28
雄川氢能科技(广州)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pure methanol and diluted methanol are placed above the battery pack on the same plane, which can make full use of gravity to feed, and sensors are installed in various parts, the system is very complicated

Method used

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  • Power supply system of direct liquid fuel battery and its operation method
  • Power supply system of direct liquid fuel battery and its operation method
  • Power supply system of direct liquid fuel battery and its operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The principle of the power supply system of the present invention is shown in FIG. 1 , including: a fuel cell main body, a fuel supply part, an oxidant supply part and a control unit part, and the machine entity is shown in FIG. 5 .

[0034]The high-concentration second liquid fuel starts from the high-concentration liquid fuel cartridge 9 and enters the mixing tank 8 through the micro-metering pump 10 to be mixed with the low-concentration fuel to form the first liquid fuel, and then passes through the micro-channel heat under the action of the fuel circulation pump 11. The exchanger 3 is preheated, and then enters the stack 1 through the filter 17 (mainly cation exchange resin); the air first passes through the filter 13 and the air pump or blower 14, and is also preheated by the microchannel heat exchanger 3 , also enters the fuel cell stack 1. In a fuel cell fuel and oxidant react on the membrane electrode assembly to generate electricity and heat. Both the fuel an...

Embodiment 2

[0043] The combined test of the direct methanol fuel cell power supply system of the present invention and a notebook computer is shown in FIG. 6 . A plurality of digital voltmeters 23 and ammeters 22 are connected in the fuel cell power supply system 19 to measure the fuel cell output, the backup battery output and the power consumed by the notebook computer 24 respectively. Their data are monitored at any time by a recording computer 21 . Since the notebook computer 24 belongs to a wide-range voltage input load (9-22V), the electric stack 1 and the backup battery in this system do not go through the power conversion circuit after being mixed, but switch to the direct external output gear, which reduces the power of the circuit itself. consumption.

[0044] In the second embodiment, the methanol concentration is controlled at about 0.5M, the battery temperature is set at 85°C, and the peak power of the fuel cell can reach more than 35W. The front end is the start-up phase, ...

Embodiment 3

[0046] The direct liquid fuel cell power supply system of the present invention is used as a multifunctional power supply (see FIG. 8 ). For constant voltage input loads, the electric stack 1 and the backup battery in the system must be switched to pass through the power conversion circuit 16b and then output to the outside after being mixed. The power supply system 19 can be set as a portable power supply for a 12V or 3.3V constant voltage load 20 after voltage conversion.

[0047] The output voltage is set to 12V, and the output current is set to 0.5A. In the present embodiment, the concentration of methanol is controlled at 0.25M in the test process of nearly 10 hours (seeing Fig. 8, wherein 21 is a recording computer; 22 is an ammeter; 23 is a voltmeter), and the electric stack 1 voltage is stable at about 18.5V, due to The output power is small, and the output voltage of the electric stack is relatively high. During the connection period of the electric stack 1, all the ...

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Abstract

The invention relates to a direct liquid fuel battery power system which comprises a fuel feeding component, wherein, a high-concentration liquid fuel storage tank is of a high-concentration liquid fuel box which has a quick self-closed sealed plug and is matched with a quick self-closed sealed socket of an inlet tube of a mini metering pump. When the fuel box is pulled out of the power system, the spring sealed plug of the sealed plug of the fuel box seals up the outlet of the fuel box, and the spring sealed plug of the sealed plug of the sealed socket of the inlet tube of the mini metering pump seals up the inlet tube of the mini metering pump. When the fuel box is inserted into the power system, the sealed push rod of the sealed socket of the inlet tube of the mini metering pump pushes the spring sealed plugs of the sealed plug and the sealed socket open to cause the fuel box to be connected with the mini metering pump. For adopting the direct liquid fuel battery power system of the high-concentration liquid fuel box, the high-concentration liquid fuel box can be changed rapidly, and poisonous liquid fuel in the high-concentration liquid fuel box can not be leaked out.

Description

technical field [0001] The present invention relates to direct liquid fuel cells. Background technique [0002] A fuel cell is an electrochemical device that converts the chemical energy of fuel directly into electrical energy. No pollution, no noise, high power generation efficiency and long service life during power generation, so it has broad application prospects in aerospace, transportation, mobile power and other fields. A single fuel cell consists of an anode, an electrolyte membrane, and a cathode. The fuel is oxidized at the anode, the oxidant is reduced at the cathode, and the electrons generated by the electrochemical reaction move in the direction of the external circuit to generate electricity. The voltage of a single fuel cell is relatively low, and it is usually necessary to combine several, dozens or even hundreds of single cells into a battery pack for external power supply. In addition, the battery pack must be organically combined with auxiliary mechani...

Claims

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Application Information

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IPC IPC(8): H01M8/00H01M8/02H01M8/04H01M8/04746H01M8/04858
CPCY02E60/50
Inventor 刘建国朱长满陈利康
Owner 雄川氢能科技(广州)有限责任公司
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