Control method for fuel cell safety operation

A fuel cell and control method technology, which is applied in the fields of fuel cell control, fuel cells, fuel cell additives, etc., can solve problems such as limiting the application of fuel cells, and achieve the effect of ensuring continuous and safe operation.

Active Publication Date: 2008-03-19
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Since such a phenomenon often occurs in fuel cells, if no measures are taken for fuel cells, the application of fuel cells will be greatly limited

Method used

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  • Control method for fuel cell safety operation
  • Control method for fuel cell safety operation

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Embodiment Construction

[0034] The following examples are further explanations and illustrations of the present invention, and do not constitute any limitation to the present invention.

[0035] Referring to Fig. 1, the control method of the safe operation of the fuel cell of the present invention comprises the following steps:

[0036] The first step: before the fuel cell stack outputs power to the load and when it is running, the central processing unit collects the discharge current and instant voltage of each fuel cell in the fuel cell stack through the connected current sensor and voltage sensor, and Data is sent to the central processing unit. The central processing unit compares and judges the instantaneous voltage signal of each fuel cell collected from the current sensor and voltage sensor with the data that has been set in advance and stored in the memory, and obtains whether the instantaneous voltage of the fuel cell is lower than Set the voltage conclusion and control the operation of th...

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Abstract

This invention relates to a control method for the safety operation of fuel batteries, which timely monitors the operating fuel battery stack with a central processor, automatically cuts off the abnormal ones from the primary circuit of a stack in operation and cuts in the standby batteries into the primary circuit, which can test the abnormal batteries from the stack in operation and replace them automatically to guarantee the stack to work safely under the rating power.

Description

technical field [0001] The present invention relates to a fuel cell, in particular to a fuel cell that can disconnect an abnormal fuel cell in a fuel cell stack from the main circuit, and connect a backup battery to the main circuit, thereby ensuring the safe operation of the fuel cell that is normally working in the fuel cell stack control method. Background technique [0002] A fuel cell is a battery that converts chemical energy directly into electrical energy. It has the characteristics of high efficiency, less pollution and low noise. Like ordinary batteries, fuel cells have positive and negative electrodes and separator materials. In fuel cells, air and oxygen are generally used as oxidants, and hydrogen or methanol, ethanol, etc. are used as fuels. The positive and negative electrodes are separated by a diaphragm, which is a water-permeable and air-tight film, which can prevent the oxidant and fuel from mixing and exploding. There are also catalysts on both sides of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J9/00H01M10/44H01M8/00H01M8/04298
CPCY02E60/12Y02E60/50Y02E60/10
Inventor 董俊卿王传福
Owner BYD CO LTD
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