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Super capacitor charging circuit

A charging circuit and super capacitor technology, applied in the field of avionics, can solve the problems of high input power capacity requirements, increased circuit power consumption, and increased heat generation.

Active Publication Date: 2013-04-10
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the power consumption of the circuit itself increases, the heat generation increases, and the requirements for the power capacity of the input power supply are relatively high.

Method used

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Embodiment Construction

[0025] A kind of embodiment of the invention is described in further detail below in conjunction with accompanying drawing, please refer to Figure 1 to Figure 6 .

[0026] refer to figure 1 and figure 2 , The basic structure of the present invention includes a switching power supply circuit 2, a voltage-current conversion circuit 5, a current-voltage conversion circuit 3, a power-current conversion circuit 6, and a feedback selection circuit 4. The input power is input through the power input terminal 1, and after passing through the circuit shown in the present invention, the output current is output from the power supply output terminal 7 to charge the supercapacitor. Switching power supply circuit 2 has two working modes of voltage feedback and current feedback, and current feedback is decomposed into current feedback after passing through voltage-current conversion circuit 5, current-voltage conversion circuit 3, power-current conversion circuit 6, and feedback select...

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Abstract

The invention belongs to the technical field of avionic technology, and in particular relates to a super capacitor charging circuit which comprises a switch power circuit2, a voltage-current conversion circuit 5, a current-voltage conversion circuit 3, a power-current conversion circuit 6 and a feedback selection circuit 4. The super capacitor charging circuit mainly performs charging control on a super capacitor, enables the super capacitor to be charged by adopting constant current when the super capacitor is in low voltage, and is charged by adopting constant power when the voltage is high. Electric charge is complemented for the super capacitor by adopting a constant voltage method when the voltage achieves a set value. By adoption of the charging circuit, the situation that after the voltage at the end of the super capacitor is increased, the requirements for power of a power supply are over-high through a method of constant current charging can be avoided.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a supercapacitor charging circuit. Background technique [0002] As a large-capacity energy storage component, supercapacitors have been widely used for energy storage in wind power generation and photovoltaic power generation industries. [0003] At present, a constant current charging method is widely used for supercapacitor charging. According to the constant current charging formula V=I×t / C of capacitor charging in this charging method, it can be known that the voltage across the supercapacitor increases linearly with the increase of time, and according to the charging power formula P=I×V, as the supercapacitor voltage Higher and higher, the charging power is also higher and higher. When charging with an ordinary switching power supply type constant current charging circuit, the input power of the circuit will become larger and larger. In this case, the power ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 田军孙庆亚姚军军马宝华
Owner SHAANXI QIANSHAN AVIONICS
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