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Electronic load of fuel cell and manufacturing method

A technology for electronic loads and fuel cells, applied in fuel cells, circuits, measuring electronics, etc., can solve problems such as poor anti-interference, and achieve the effects of low on-resistance, strong anti-interference, and high control accuracy

Inactive Publication Date: 2008-12-31
SUNRISE POWER CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the junction capacitance of the MOSFET, the sudden rise of the voltage across the drain and source when it is turned off will generate an interference voltage across the gate and source through the junction capacitance, so the anti-interference is poor

Method used

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  • Electronic load of fuel cell and manufacturing method
  • Electronic load of fuel cell and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Example 1.200W electronic load production steps.

[0029] First determine the power supply parameters, voltage 0-3V, current 0-80A. The load resistance should reach 0.0375Ω to meet the discharge requirements;

[0030] The second step is to select the power field effect transistor MOSFET 2SK2690 according to the load resistance. The technical parameters are that the on-resistance is 0.01Ω, the maximum power is 125W, and the maximum current is 80A.

[0031] The third step is to design the circuit board and connect 10 2SK2690 in parallel, such as figure 2 . It can be calculated that the minimum resistance after parallel connection can reach 0.001Ω. In order to prevent overcurrent due to device failure, an overcurrent protection resistor RS 1 ~ RS 10 is connected in series in each circuit.

[0032] The fourth step is control circuit design. Design an intelligent controller with 51 series MCU. The controller has at least two channels of 12-bit A / D conversion and one c...

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Abstract

The invention relates to an electronic load preparation method of a fuel cell. The method adopts low on-resistance property of a power MOSFET as the electronic load of the fuel cell. The on-resistance can be randomly adjusted by controlling the voltage between grid source electrodes of the electronic load, thereby changing the load. The parallel connection of a plurality of power MOSFETs can realize low-voltage heavy-current discharge of the fuel cell. The electronic load obtained from the method can fully meet the technological requirement for the evaluation of the fuel cell, has the advantages of low on-resistance, heavy current discharge, high control precision, and high resistance to interference etc., and particularly has very low manufacturing cost.

Description

technical field [0001] The invention relates to fuel cell technology, in particular to a method for manufacturing a fuel cell electronic load. Background technique [0002] A fuel cell is a battery pack composed of multiple monolithic cells. When developing a new type of battery, in order to reduce the development cost, the usual practice is to first study the single-chip battery, produce a single-chip battery with a small area, and then perform performance evaluation. After the performance meets the requirements, it will be scaled up in proportion to make it applicable. battery pack. [0003] The performance evaluation of the battery is inseparable from the load. Stable performance, good adjustability and strong adaptability are the key indicators of battery load. The monolithic fuel cell is characterized by low voltage and high current, the voltage is 1V at no-load, and the voltage drops below 0.2V when the discharge current is maximum. If the area of ​​the single-chip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00G01R31/36H01M8/04858
CPCY02P70/50
Inventor 张华民李杰
Owner SUNRISE POWER CO LTD
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