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Energy supply system and control method thereof

A control method and energy supply technology, applied in fuel cells, fuel cell groups, electrical components, etc., can solve the problems of low energy utilization rate and high energy consumption of the energy supply system, and achieve the effect of improving energy utilization rate and reducing energy consumption

Active Publication Date: 2013-11-20
DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide an energy supply system and its control method to solve the problems of high energy consumption and low energy utilization rate of the energy supply system

Method used

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  • Energy supply system and control method thereof
  • Energy supply system and control method thereof

Examples

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example 1

[0069] Example 1: Fuel cell and vanadium battery combined energy supply system, in which the fuel cell power is 5KW, and the vanadium battery power is 3.5kW. When the energy supply mode is powered only by vanadium battery, the system efficiency is 70.7%. When the energy supply mode is powered by the vanadium battery, the heat generated by the vanadium battery is managed and utilized, and the total efficiency of the system can reach 80.9%.

example 2

[0070] Example 2: Fuel cell and vanadium battery combined energy supply system, in which the fuel cell power is 5KW, and the vanadium battery power is 3.5kW. When the energy supply mode is fuel cell only, the system efficiency is 43.1%. When the energy supply mode provides power and heat for the fuel cell, the power supply simultaneously collects and manages the heat generated by the fuel cell stack. The total efficiency of the system can reach 88.4%.

example 3

[0071] Example 3: Fuel cell and vanadium battery combined energy supply system, in which the fuel cell power is 5KW, and the vanadium battery power is 3.5kW. When the energy supply mode is jointly powered by the fuel cell and the vanadium battery, the maximum output power of the system can reach 8.5kW, and the efficiency is 53.6%. If the energy supply mode is that the fuel cell and the vanadium battery supply power and heat at the same time, the power supply simultaneously collects and manages the heat generated by the fuel cell and the vanadium battery. The total efficiency of the system can reach 87.3%.

[0072] From the above description, it can be seen that the present invention achieves the following technical effects: the energy supply system composed of the flow battery subsystem and the fuel cell subsystem is adopted, and the fuel cell is used for power supply when the flow battery is charged; When the output power of the battery does not match its optimal working pow...

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Abstract

The invention discloses an energy supply system and a control method thereof. The energy supply system comprises a fuel battery subsystem, a flow battery subsystem and a power supply management unit, wherein the fuel battery subsystem comprises a fuel battery pile; the flow battery subsystem comprises a flow battery pile; and the power supply management unit is respectively connected with the fuel battery pile and the flow battery pile, and is used for managing electric energy generated by the fuel battery pile and the flow battery pile so as to control the hybrid power supply of the fuel battery subsystem and the flow battery subsystem. Through the invention, the energy consumed by the energy supply system can be lowered, and the energy utilization rate of the system is improved.

Description

technical field [0001] The invention relates to the field of energy applications, in particular to an energy supply system and a control method thereof. Background technique [0002] All-vanadium redox flow battery is a new environmentally friendly energy storage system and efficient energy conversion device, which has the characteristics of large scale, long life, low cost, high efficiency and environmental friendliness. Vanadium batteries can be used as large-scale electric energy storage and high-efficiency conversion equipment in power generation systems. They can cut peaks and fill valleys and balance loads in the power grid, and improve the quality of power supply and the stability of power station operations. [0003] The vanadium battery uses vanadium ions V2+ / V3+ and V4+ / V5+ as the positive and negative electrode redox pairs of the battery respectively, stores the positive and negative electrolytes in two liquid storage tanks, and drives the active electrolyte to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/24H01M8/04H01M8/04858H01M8/2495
CPCY02E60/50
Inventor 汤浩方源张晓晶李婷高建龙陶诗涌
Owner DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD