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A charging device for a supercapacitor

A supercapacitor and charging device technology, applied in battery circuit devices, circuit devices, charging/discharging current/voltage regulation, etc., can solve the problems of low current accuracy and constant current accuracy, achieve good wiring methods, improve accuracy and The effect of anti-interference ability

Active Publication Date: 2017-05-10
深圳万拓技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a charging device for a supercapacitor, which aims to solve the problem of low precision of the constant current due to the low precision of the current sampled by the low-end current sampling circuit in the prior art

Method used

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  • A charging device for a supercapacitor
  • A charging device for a supercapacitor
  • A charging device for a supercapacitor

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0030] An embodiment of the present invention provides a supercapacitor charging device, such as figure 2 As shown, it includes an input circuit 101, a pre-charge control circuit 111, a DC conversion circuit 103, a voltage feedback circuit 108 and a current feedback circuit 110;

[0031] The input circuit 101 is used to input a DC voltage to the DC converter 102;

[0032] The DC conversion circuit 103 is used for performing DC conversion on the DC voltage and charging...

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Abstract

The invention relates to the technical field of charging of a super capacitor. A charging unit of the super capacitor comprises an input circuit, a direct current conversion circuit, a pre-charging control circuit, a voltage feedback circuit and a current feedback circuit, wherein the direct current conversion unit is used for carrying out direct current conversion on direct current voltage, when the current voltage of the super capacitor is lower than a preset value, a constant current and constant voltage circuit can not meet the work condition, and the pre-charging control circuit controls PWM signals to charge the capacitor so that the voltage value of the capacitor can reach a first preset value. The current feedback circuit enables the direct current conversion circuit to carry out constant current charging on the capacitor and enables the voltage value of the capacitor to reach a second preset value. The voltage feedback circuit enables the direct current conversion circuit to carry out constant voltage charging on the capacitor. The charging method realizes rapid charging of the super capacitor, does not generate a self-excitation phenomenon and improves the current sampling accuracy and the anti-jamming capability.

Description

technical field [0001] The invention relates to the technical field of capacitor charging, in particular to a charging device for a supercapacitor. Background technique [0002] At present, among the technical solutions for charging large capacitors, one technical solution is to use a module provided by a chip supplier, but the price of the module is relatively high; the other technical solution is to use a series diode and a resistor to charge the capacitor. The disadvantage of this technical solution is that it is only suitable for small currents. When charging with a current above 1A, the heating value of the current limiting resistor will be too large, which is not suitable for long-term charging. The third technical solution is to detect the current through a series resistor, and amplify the voltage multiple through an operational amplifier to form a constant voltage and constant current circuit, such as figure 1 As shown, in this circuit, the control chip, inductor L1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/007
Inventor 胡荣国
Owner 深圳万拓技术有限公司
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