Intelligent equalization device for super-capacitor

Abstract

The invention discloses an intelligent equalization device for a super-capacitor, and the device comprises a driving module and an equalization module, and is characterized in that the driving moduleisolates and amplifies a high-frequency PWM control signal outputted by an intelligent control module and then applies the high-frequency PWM control signal to a power switch tube of the equalizationmodule; the equalization module is connected with a capacitor bank; the equalization module consists of a plurality of same equalization units, and each single capacitor is corresponding to one equalization unit; each equalization unit comprises an electronic transformer and two power switch tubes; according to the electromagnetic isolation effect of the transformer, the equalization units are divided into a transformer primary side circuit and a transformer secondary side circuit; the transformer primary side is connected with one power switch tube and one single capacitor in series to form the transformer primary side circuit, and the transformer secondary side is connected with the other power switch tube and the capacitor bank in series to form the transformer secondary side circuit. According to the invention, the device can quickly and effectively enable the capacitor bank with the unbalanced state of a single capacitor to reach in a relatively balanced state, and enlarges the actual use capacity of the capacitor bank.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to a supercapacitor intelligent equalization technology. Background technique [0002] Compared with batteries and traditional physical capacitors, supercapacitors have the characteristics of high power density, long cycle life, wide operating temperature range, maintenance-free, and environmental protection, so their applications are becoming more and more extensive. In the fields of auxiliary peak power, backup power supply, storage of regenerative energy, and alternative power supply, supercapacitors are considered to be one of the most promising energy storage methods due to their excellent performance. Currently, the single voltage of supercapacitors is not high (generally 1-4V), so in practical applications, supercapacitors are generally used in series or in parallel to provide more energy and greater power. Due to the inconsistency of parameters in the man...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a supercapacitor intelligent equalization device to solve the technical problem of unbalanced voltage of individual capacitors in the capacitor bank

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