Voltage converter for electric automobile fuel battery unit

A fuel cell stack and voltage conversion technology, which is applied in the direction of conversion equipment with intermediate conversion to AC, can solve the problems that have not been reported on fuel cells, etc., to reduce the electromagnetic disturbance of the whole machine, improve efficiency, and high conversion efficiency Effect

Inactive Publication Date: 2002-06-05
BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH
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  • Abstract
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Problems solved by technology

[0004] However, there are no reports of fuel cell DC/DC that meet the n

Method used

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  • Voltage converter for electric automobile fuel battery unit
  • Voltage converter for electric automobile fuel battery unit
  • Voltage converter for electric automobile fuel battery unit

Examples

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Example Embodiment

[0022] The present invention is a power conversion device for fuel cell stacks of electric vehicles. It can be composed of a DC / DC module to form a low-power voltage conversion device below 30KW, or it can be composed of several DC / DC modules in parallel and a current-sharing control module. High-power power conversion device up to 160KW or more.

[0023] Refer to figure 1 , The figure is a low-power power conversion device composed of a DC / DC module. The unstable power output from the fuel cell is input from the terminals 201 and 202, and after DC / DC conversion, it is output from the terminals 203 and 204 to the power input terminal of the electric vehicle.

[0024] Refer to figure 2 , DC / DC module is composed of main circuit, control chip, input voltage detection, zero current detection, peak current detection, output voltage detection, switch tube drive signal, output current signal, current sharing control signal. Among them: the main circuit is a boost circuit; the inputs o...

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Abstract

The invention relates to a voltage transform device of fuel battery group used in electric automobile. It consists of a DC/DC module or multi DC/DC modules and an even current control module. The voltages output from each DC/DC module being connected in parallel and then connected to adjusting end of voltage in the even current control module. The current sense signal output from each DC/DC module is connected to the collected end of current signal of the even current control module. The even current control signal output from the even current control module connects to the input end of the even control signal in each DC/DC module. The DC/DC modules make output power supply of the fuel battery raised to stable power with enough high voltage and high stability, in order to meet the requirement for driving electric automobile. The output voltage of the fuel battery can be adapted to the lower but with large range of variation and its pwoer can be more than 160 KW.

Description

technical field [0001] The invention relates to a voltage converting device for a fuel battery pack of an electric vehicle. Background technique [0002] Research on fuel cells and related technologies has become a hot topic for new technologies in the energy field of great strategic significance in various industrial countries. Fuel cell electric vehicles and related technologies have been listed as major technical issues for priority development by various industrial countries and international automobile industry groups. In the national 863 major project of electric vehicles, fuel cell electric vehicles and related technologies have been listed as key technical research topics. Fuel cell conversion device (hereinafter referred to as DC / DC) is a related technology of fuel cell electric vehicles, and has been listed as a key technical research topic of major electric vehicle projects. [0003] The basic function of DC / DC is to upgrade the lower fuel cell output power with...

Claims

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Application Information

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IPC IPC(8): H02M3/22H02M3/28
Inventor 钱良国邵化江田玉平顾向阳
Owner BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH
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