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Voltage inspection device for fuel cell

A fuel cell and voltage technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of small single-channel voltage range, unsatisfactory inspection speed, and inflexible expansion, and achieve faster inspection speed, flexible expansion, cost reduction effect

Pending Publication Date: 2021-08-31
惠州绿保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current voltage inspection scheme is generally expensive, the inspection speed is not ideal, the expansion is not flexible enough, and the single-channel voltage range is small

Method used

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  • Voltage inspection device for fuel cell

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Experimental program
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Effect test

Embodiment 1

[0026] refer to figure 1 , a fuel cell voltage inspection device provided by the present invention includes: a microprocessor 1, an operational amplifier 2, an isolated electronic switch 3, an inspection interface, a decoder 9, an isolated CAN 8, an isolated power supply 5, and a precision rectifier Circuit 6, direction discrimination circuit 7.

[0027] Among them, the microprocessor 1 is used for voltage measurement, control of each component and external communication. In this embodiment, the microprocessor 1 adopts STM32 series chips, and STM32F103C8 is used in this embodiment. Of course, this is only an example, and the use of this type of chip is not specifically limited. During specific implementation, a suitable chip can be selected according to specific needs. type chip.

[0028] The operational amplifier 2 is connected to the microprocessor 1, and the microprocessor 1 controls the operational amplifier 2 to be electrically connected to the positive and negative pol...

Embodiment 2

[0039] A fuel cell voltage inspection device provided by the present invention includes: a microprocessor 1 , an operational amplifier 2 , an isolated electronic switch 3 , an inspection interface, a decoder 9 , an isolated CAN 8 , and an isolated power supply 5 .

[0040] Among them, the microprocessor 1 is used for voltage measurement, control of each component and external communication. In this embodiment, the microprocessor 1 adopts a chip of the STM32 series.

[0041]The operational amplifier 2 is connected to the microprocessor 1, and the microprocessor 1 controls the operational amplifier 2 to be electrically connected to the positive and negative poles of each single cell of the fuel cell in turn according to a certain rule, so as to ensure the positive and negative poles of any single cell. The poles can be connected to the non-inverting and inverting input terminals of the operational amplifier 2 through the selective conduction of the isolated electronic switch 3; ...

Embodiment 3

[0049] In this embodiment, the microprocessor 1 is not used to collect the single battery voltage signal, but a separate analog-to-digital conversion chip is used to collect analog quantities, and the data is transmitted to the microprocessor 1 through communication interfaces such as IIC and SPI. The rest of the content is the same as that of Embodiment 1 or Embodiment 2, and will not be repeated here.

[0050] The microprocessor 1 of the present invention controls the conduction of the isolation electronic switch 3, connects the positive and negative poles of each monolithic battery to the input terminal of the operational amplifier 2 for voltage measurement in turn, and the output voltage of the operational amplifier 2 is rectified by the microprocessor Converter 1 performs analog-to-digital conversion, and obtains the positive and negative polarity of the single battery according to the direction discrimination circuit 7, and finally sends the inspection voltage data throug...

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Abstract

The invention relates to the technical field of fuel cell production, in particular to a voltage inspection device for a fuel cell. The device comprises a microprocessor used for voltage measurement, control of each component and external communication; an operational amplifier which is connected with the microprocessor, wherein the microprocessor controls the operational amplifier to be electrically connected with the positive electrode and the negative electrode of each single cell of the fuel cell in turn according to a certain rule; an isolation electronic switch which is connected with the operational amplifier, wherein the output end of the isolation electronic switch is connected with the input end of the operational amplifier according to a certain rule; an inspection interface which is connected with the isolation electronic switch, wherein the inspection interface is used for being connected with a fuel cell and connected with the positive electrode and the negative electrode of each single cell of the fuel cell; and an isolated power source. According to the invention, the cost is reduced, the inspection speed is accelerated, and the single-channel voltage range can be flexibly expanded and adjusted, so that different use requirements are met, and the universality is high.

Description

technical field [0001] The invention relates to the technical field of fuel cell production and processing, in particular to a fuel cell voltage inspection device. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high. At the same time, the fuel cell uses fuel and oxygen as raw materials, and there is no Mechanical transmission parts, so there is no noise pollution, and the emission of harmful gases is very small. Among them, proton exchange membrane fuel cells (hereinafter referred to as fuel cells) are expected to become the main power so...

Claims

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Application Information

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IPC IPC(8): H01M8/04537
CPCH01M8/04552Y02E60/50Y02P70/50
Inventor 艾永恒王志军康鹏
Owner 惠州绿保科技有限公司
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