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Fuel cell voltage monitoring system and its method

A fuel cell and voltage monitoring technology, applied in fuel cells, fuel cell additives, circuits, etc., can solve problems such as increasing the cost of battery voltage monitoring, and achieve the effect of ensuring system monitoring accuracy and system monitoring accuracy.

Active Publication Date: 2008-06-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These virtually increase the cost of battery voltage monitoring

Method used

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  • Fuel cell voltage monitoring system and its method
  • Fuel cell voltage monitoring system and its method
  • Fuel cell voltage monitoring system and its method

Examples

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Embodiment Construction

[0032] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0033] see figure 1 The fuel cell voltage monitoring system includes a fuel cell stack 11 composed of several single cells connected in series, a power management unit 13 , a switch network unit 14 , a data acquisition unit 15 , a control unit 16 , and an isolated communication interface unit 17 . The positive and negative ends of the fuel cell stack 11 are electrically connected to the power management unit 13, and after the level conversion by the power management unit 13, power is provided to each power unit of the system; the switch network unit 14 is a multi-way switch circuit, which has switching characteristics Composed of discrete electronic components or multi-way switch integrated circuits; the data acquisition unit 15 includes a signal processing unit and a data conversion unit, and the signal conditioning unit is composed of...

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Abstract

The invention discloses a system for monitoring the voltage of a fuel battery, comprising a switch network unit, a data acquisition unit, an isolated communication interface unit and a main controller. The fuel battery is divided into a plurality of fuel battery sets; one fuel battery set together with the switch network unit, the data acquisition unit, the control unit and the isolated communication interface unit forms a voltage monitor module. The single batteries of the fuel battery unit is connected to the switch network unit which gates the single batteries one by one and transmit the a voltage signal to the data acquisition unit; the output end of the data acquisition unit is connected to the control unit which provides a voltage signal to the main controller through the isolated communication interface unit; the main controller provides a control signal to the control unit through the isolated communication interface unit to uniquely gate the monitor module. The invention reduces the monitoring cost and ensures effective monitor of the voltage of the fuel battery.

Description

technical field [0001] The invention relates to a fuel cell voltage monitoring system, in particular to a proton exchange membrane fuel cell voltage monitoring system. Background technique [0002] A fuel cell is a device that generates electricity from a fuel and an oxidant, and can achieve high power generation efficiency. In the fuel cell system, with the polymer electrolyte membrane as the center, an anode (ANODE) ​​and a cathode (CATHODE) are arranged on both sides. Hydrogen as a fuel undergoes an electrochemical reduction reaction at the anode, and oxygen as an oxidant undergoes an electrochemical reduction reaction at the cathode. Oxidation reactions, where electrical energy is generated by movement of generated electrons. [0003] Taking a typical proton exchange membrane fuel cell (PEM fuel cell) as an example, hydrogen is used as fuel. In the anode reaction, hydrogen enters through the diffusion layer, and the hydrogen is decomposed into hydrogen protons with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36H01M8/04H01M8/04537
CPCY02E60/50
Inventor 张振赵志强董俊卿
Owner BYD CO LTD
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