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Fuel-cell adapter

A fuel cell and adapter technology, which is applied in current collectors, battery circuit devices, and secondary battery repair/maintenance, etc., can solve the problems of reducing system flexibility, losing battery life, reducing capacity, etc., and achieving reliable performance and stable output. Voltage, the effect of adapting to sudden changes

Inactive Publication Date: 2009-05-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not suitable for occasions with strict volume requirements; nickel-cadmium and nickel-metal hydride batteries have memory effects, which are likely to cause capacity reduction. Even if the memory is released by fully charging and discharging, the service life of the battery will also be lost. It is used in hybrid power systems. Will reduce the flexibility of the system; lithium batteries and lead-acid batteries have no memory effect and can be charged at any time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The power of the fuel cell is 6.5W, and the load is a DC motor of 5W. Adopt 4.5V~9V input 5W DC / DC module, use a single lithium polymer battery as auxiliary energy, use 0.05Ω sampling resistor as sensor, use voltage comparator LM339 as controller, use charging controller MAX1757 as charging circuit, adopt The 1W resistor is used as a dummy load, and the controllable switch uses MOSFET.

Embodiment 2

[0043] The power of the fuel cell is 30W, and the load is a laptop computer. Adopt 9V~18V input 25W DC / DC module, use three lithium-ion battery packs connected in series as auxiliary energy, use 0.1Ω sampling resistor as sensor, use microcontroller AT89C2051 as controller, use charging controller MAX1758 as charging circuit, use 3W The resistor is used as a virtual load, and the controllable switch adopts MOSFET.

Embodiment 3

[0045] The power of the fuel cell is 55W, and the load is a DC motor of 50W. 10V~40V input 50W DC / DC module, 12V lead-acid battery pack as auxiliary energy, Hall current sensor as sensor, operational amplifier LM224 as controller, charging circuit as charging controller UC3906, and 5W electric heating plate As a virtual load, the controllable switch adopts a relay.

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PUM

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Abstract

The architecture of the invention is: the input end of DC module is connected to the output end of the fuel cell; the output end of the DC module is divided into three routes; one route is connected to the sensor and load via a controllable switch; second route is connected to the virtual load via a controllable switch; third route is connected to the input end of the secondary voltage stabilization and transformation circuit; the output end of the secondary voltage stabilization and transformation circuit is connected to the input end of the controller and the charging circuit; the output end of the charging circuit is connected to the storage cell; the storage cell is connected to the sensor and load via a controllable switch; the output end of the controller is respectively connected to three controllable switch and the control end of the charging circuit.

Description

technical field [0001] The invention relates to a fuel cell adapter, in particular to an adapter suitable for a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is an electrochemical device that directly converts the chemical energy of fuel into electrical energy. It has the advantages of high efficiency, environmental friendliness, quietness and high reliability, and is considered to be the preferred clean and efficient power generation technology in the 21st century. However, compared with other types of batteries, fuel cells have a disadvantage that is difficult to overcome, that is, the output voltage of fuel cells decreases rapidly with the increase of output current. For example, the open circuit voltage of a hydrogen-oxygen proton exchange membrane fuel cell is above 1V, but the working voltage is lower than 0.8V; the theoretical open circuit voltage of a direct methanol fuel cell is 1.2V, but the working voltage is around 0.4V. This sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/04H01M10/42
CPCY02E60/12Y02E60/10
Inventor 孙公权秦兵赵钢陈利康赵锋良辛勤
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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