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Supercapacitor voltage equalization device and control method for the device

A supercapacitor and voltage equalization technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of shortened service life of supercapacitors, inconsistent voltage of supercapacitors, etc., to improve energy storage quality, supercapacitor capacity and internal Accurate resistance identification and high charge and discharge efficiency

Active Publication Date: 2017-02-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the voltages of the parallel nodes of the supercapacitor are inconsistent, resulting in shortened service life of the supercapacitor, and provide a supercapacitor voltage equalization device and a control method for the device

Method used

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  • Supercapacitor voltage equalization device and control method for the device
  • Supercapacitor voltage equalization device and control method for the device
  • Supercapacitor voltage equalization device and control method for the device

Examples

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specific Embodiment approach 1

[0058] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment, the supercapacitor voltage equalization device described in this embodiment includes a main controller 1, a total current / voltage detection unit 2, a plurality of balance controllers 3 and a DC-DC power supply module 4;

[0059] The DC-DC power supply module 4 provides working power for the main controller 1, the total current / voltage detection unit 2 and a plurality of balance controllers 3;

[0060] The main controller 1 is connected to the plurality of balance controllers 3 and the total current / voltage detection unit 2;

[0061] Each balance controller 3 is used to measure the terminal voltage of n parallel junctions of the supercapacitor and charge the n parallel junctions;

[0062] The total current / voltage detection unit 2 is used to detect the total voltage and the total current at the output port of the supercapacitor.

[0063] In this embodiment, the capacitors conne...

specific Embodiment approach 2

[0065] Specific implementation mode two: combination image 3 with Figure 4 Describe this embodiment, this embodiment is a further limitation of the supercapacitor voltage equalization device described in the first embodiment, in this embodiment, the balance controller 3 includes n parallel node balancing units 3-1, m Analog switching circuit 3-2, AD processing circuit 3-3, balance control processor 3-4, temperature signal processing circuit 3-5, optocoupler isolation communication circuit 3-6 and isolated power supply, m is less than n;

[0066] Each parallel section balancing unit 3-1 is used to charge a parallel section, and the control signal input terminal of the parallel section balancing unit 3-1 is connected to the charging control signal output terminal of the equalization control processor 3-4;

[0067] Each analog switching circuit 3-2 is used to measure the terminal voltages of multiple parallel nodes, m analog switching circuits 3-2 measure the terminal voltages...

specific Embodiment approach 3

[0075] Specific implementation mode three: combination Figure 5 with Figure 6 Describe this embodiment, this embodiment is a further limitation of the supercapacitor voltage equalization device described in Embodiment 2, in this embodiment, the AD processing circuit 3-3 includes an analog processing circuit 3-3-1, an analog / digital conversion module 3-3-2 and digital isolation module 3-3-3;

[0076] The m signal input terminals of the analog processing circuit 3-3-1 are respectively connected to the signal output terminals of the m analog switching circuits 3-2, and the signal output terminals of the analog processing circuit 3-3-1 are connected to the analog / digital conversion module 3-3 The analog signal input terminal of -2, the digital signal output terminal of the analog / digital conversion module 3-3-2 is connected to the parallel node voltage signal input terminal of the balance control processor 3-4 through the digital isolation module 3-3-3, and the digital isolati...

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Abstract

The invention provides a voltage balancing device of a supercapacitor and a control method of the voltage balancing device, relates to the energy storage technology of the supercapacitor, and aims to solve the problem that the service life of the supercapacitor is shortened due to inconsistent voltage of shunt sections of the supercapacitor. According to the voltage balancing device of the supercapacitor and the control method of the voltage balancing device, each energy storage unit is equipped with a balance controller which is controlled by a master controller, so that voltage of the shunt sections of the supercapacitor is balanced, consistent voltage of the shunt sections is kept, the service life of the supercapacitor is prolonged, and the energy storage quality of the supercapacitor is improved; and besides, the voltage balancing device of the supercapacitor and the control method of the voltage balancing device have the advantages that detection for voltage of the shunt sections of the supercapacitor is accurate, charge and discharge efficiency of the supercapacitor is high, the voltage balancing speed is high, the voltage consistency is good, capacity and internal resistance of the supercapacitor are identified accurately, module power density is high and the like.

Description

technical field [0001] The invention relates to energy storage technology of supercapacitors. Background technique [0002] A supercapacitor is an electrochemical component developed in the 1970s and 1980s to store energy through polarized electrolytes. The outstanding advantages are high power density, short charge and discharge time, long cycle life, and wide operating temperature range. It is the largest capacity among the electric double layer capacitors that have been put into mass production in the world. However, there are also some problems with supercapacitors, such as the inconsistent voltage of each parallel node, which shortens the service life of supercapacitors. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the voltages of the parallel nodes of the supercapacitor are inconsistent, resulting in a shortened service life of the supercapacitor, and provide a supercapacitor voltage equalization device and a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 段建东李树生孙力王志刚国海峰王令金李寻迹郭安东张润松刘龙海赵克吴凤江安群涛
Owner HARBIN INST OF TECH
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