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Three-monomer direct equalizer of series connection accumulation power supply

An energy storage power supply and three-unit technology, which is applied in the direction of current collectors, electric energy storage systems, electric vehicles, etc., can solve the problems of low work efficiency and the inability of energy storage units to directly balance energy, so as to improve work efficiency and reduce loss The effect of small size and short energy transfer path

Inactive Publication Date: 2008-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that two non-adjacent energy storage units cannot directly balance energy and work efficiency is low

Method used

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  • Three-monomer direct equalizer of series connection accumulation power supply
  • Three-monomer direct equalizer of series connection accumulation power supply

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Experimental program
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specific Embodiment approach 1

[0008] Specific implementation mode 1: The following describes this implementation mode in conjunction with FIG. 1. This implementation mode consists of a first winding L1, a second winding L2, a third winding L3, a first switching tube S1, a second switching tube S2, and a third switching tube S3. , the fourth switch tube S4, the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4, the four diodes and the four switch tubes are connected in reverse parallel respectively, and all The anode of the diode is connected to the source of the switch tube, the cathode of the diode is connected to the drain of the switch tube, the source of the first switch tube S1 is connected to the end of the same name of the first winding L1, and the drain of the second switch tube S2, The source of the second switching tube S2 is connected to the drain of the third switching tube S3 and the drain of the fourth switching tube S4, the source of the third switching tube S3 i...

specific Embodiment approach 2

[0018] Specific Embodiment Two: The present embodiment will be described below in conjunction with FIG. 1. The difference between this embodiment and Embodiment 1 is that it also includes a first capacitor C1, a second capacitor C2, and a third capacitor C3. The first capacitor C1 One end is connected to the drain of the first switching tube S1, the other end of the first capacitor C1 is connected to the opposite end of the first winding L1 and one end of the second capacitor C2, and the other end of the second capacitor C2 is connected to the second switching tube S2 The source of the third switching transistor S3 and the drain of the third switching transistor S3 are connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is connected to the same-named end of the second winding L2 and the different-named end of the third winding L3. This connection acts as a filter and makes the circuit waveform more stable. Other composition and connectio...

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Abstract

The invention provides a series connected energy storage power tri-monomer direct equalizer and relates to a series connected energy storage power monomer equalization circuit. The invention solves the problems that two adjacent energy storage monomers can not directly equalize the energy and the work efficiency is low. The invention comprises a first winding, a second winding, a third winding, a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first diode, a second diode, a third diode and a fourth diode, wherein, the four diodes are respectively reversely connected in parallel with the four switching tubes, anodes of the diodes are connected with source electrodes of the switching tubes, cathodes of the diodes are connected with drain electrodes of the switching tubes, the source electrode of the first switching tube is connected with a corresponding terminal of the first winding and the drain electrode of the second switching tube, the source electrode of the second switching tube is connected with the drain electrode of the third switching tube and the drain electrode of the fourth switching tube, the source electrode of the third switching tube is connected with an unlike terminal of the second winding, the source electrode of the fourth switching tube is connected with a corresponding terminal of the third winding, a corresponding terminal of he second winding is connected with an unlike terminal of the third winding; three windings are wound on the same iron core and have the same number of turns.

Description

technical field [0001] The invention relates to a balance circuit of series energy storage power supply units, in particular to a switch conversion circuit capable of realizing direct bidirectional transfer of energy between any two of three adjacent series energy storage units. Background technique [0002] Various types of batteries and supercapacitors have been widely used as electric energy storage components in electric vehicles, uninterruptible power supplies, distributed power generation and other fields related to electric energy storage technology. Whether it is a battery or a supercapacitor, the voltage of the energy storage unit is relatively low. In practical applications, several to dozens of units are usually connected in series to form an energy storage power group with a suitable voltage. Since it is difficult to ensure that the parameters of each energy storage unit are exactly the same, overcharging and overdischarging of some monomers are prone to occur du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J15/00
Inventor 杨世彦王雄飞盖晓东杨威
Owner HARBIN INST OF TECH
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