Balanced bidirectional charging method of super capacitor

A technology of supercapacitor and charging method, which is applied in the direction of electrical components and electric energy storage systems, etc., and can solve problems such as poor actual effect and waste of charging energy

Active Publication Date: 2010-06-09
TIG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Balanced bidirectional charging method of super capacitor
  • Balanced bidirectional charging method of super capacitor
  • Balanced bidirectional charging method of super capacitor

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] figure 1 Schematic diagram of the structure of the system used in the balanced bidirectional charging method for supercapacitors according to an embodiment of the present invention. Such as figure 1 As shown, the system used in the supercapacitor balanced bidirectional charging method of the present invention includes: a supercapacitor that can form a supercapacitor module, because each supercapacitor on the supercapacitor module will be charged by this method, it can be guaranteed The supercapacitors charge equalization, so only one supercapacitor is shown for illustration.

[0041]The present invention sets a bypass circuit for the charging circuit of the supercapacitor, and the bypass circuit includes a low-pass filter, a transistor and a rechargeable battery. However, during use, these components are not always connected at the same time. A variable vo...

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Abstract

The invention relates to a balanced bidirectional charging method of a super capacitor. The method comprises the following steps of: in a control unit, filtering out the harmonic voltage of the fully charged voltage of the super capacitor when being fully charged voltage through a low pass filter to obtain filtering voltage, and setting the filtering voltage as the threshold voltage of a transistor; starting a high-frequency charger to charge the super capacitor, controlling the control unit to control a chargeable battery and the bypass circuit to be in a disconnection state, controlling a variable voltage regulator and a charging circuit to be in a disconnection state, and monitoring the bypass current of the bypass circuit in real time by a detector; with the charging operation, when the voltage of the super capacitor is boosted to the threshold value which is achieved by filtering the fully charged voltage through the low pass filter, conducting the transistor and enabling the current to pass through the bypass circuit. The method n balances the charging of the super capacitor on the primise of saving electric energy.

Description

technical field [0001] The invention relates to a charging method for a supercapacitor, in particular to a bidirectional charging method and an equalized charging method for a supercapacitor. Background technique [0002] Ultracapacitors are well known in the art and are currently being developed for use as power sources in high energy appliances such as in engine starting and as uninterruptible power supplies. In these applications, what is needed is a power supply that can be charged quickly and cycled many times, and this power supply often includes a supercapacitor instead of a conventional battery. [0003] Supercapacitors are capable of delivering high specific power in a short time. The discharge (or charge) time performance of a supercapacitor is that it can transmit a specific power exceeding 1kW / kg within a few seconds or tens of seconds. Individual supercapacitors vary in capacitance from 1F to about 3500F, yet have very low resistance, typically less than 1mΩ. ...

Claims

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Application Information

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IPC IPC(8): H02J15/00
Inventor 杨国庆阎贵东李兵
Owner TIG TECH CO LTD
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