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Energy storage circuit

An energy storage circuit and energy storage capacitor technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of unadjustable charging voltage of capacitors, low anti-interference performance, and large size.

Inactive Publication Date: 2019-08-20
胡语嫣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the resistance step-down method is generally used to charge the energy storage capacitor, which is large in size, and the charging voltage of the capacitor cannot be adjusted; the non-isolated voltage detection, the anti-interference performance is not high, and affects the long-term working stability.

Method used

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Embodiment Construction

[0008] control figure 1 , figure 2 , an energy storage circuit, including a single-chip microcomputer, an energy storage capacitor, an isolation pulse transformer, an isolation optocoupler, a MOS tube, a power inductor, two operational amplifiers, three driving transistors and several resistors, capacitors, and diodes .

[0009] Among them, the push-pull circuit composed of resistor R1R2R3, NPN transistor Q1Q2, and PNP transistor Q3 is connected to the DC blocking filter circuit composed of resistor R4 and capacitor C1 to form the primary coil drive circuit (3); the PWM output terminal of the microcontroller (1) is connected to the primary coil drive Circuit (3), then connect the primary coil of the isolated pulse transformer L1 and the positive power supply; the secondary coil of the isolated pulse transformer L1 is connected in series with a resistor R5, connected in parallel with a resistor R6, and a transient diode D1 to form a MOS tube for current limiting and voltage c...

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PUM

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Abstract

The invention relates to an energy storage circuit. The energy storage circuit is composed of a singlechip system, an isolated pulse charging circuit, an isolated voltage detection circuit and an energy storage capacitor. A singlechip can set a voltage value of the energy storage capacitor in a range lower than a power supply voltage, output a PWM signal to quickly charge the energy storage capacitor and monitor a voltage signal of the energy storage capacitor, PWM signal output is regulated, and stable voltage and electric quantity of the energy storage capacitor are maintained. An isolationtransformer and an optical coupler isolate a low voltage circuit from a high voltage circuit of the energy storage capacitor, interference effect can be effectively prevented from being produced due to discharge of the energy storage capacitor, and system stability is improved. Voltage and electric quantity of the energy storage capacitor can be regulated, so that the energy storage circuit has more extensive applicability.

Description

technical field [0001] The invention relates to an energy storage circuit, which is suitable for the field of electromagnetic drive. Background technique [0002] The permanent magnet high and low voltage circuit breakers and contactors that have appeared in recent years need to use energy storage capacitors with a voltage of about 300V to drive the excitation coil of the permanent magnet switch to realize the switching action. At present, the resistance step-down method is generally used to charge the energy storage capacitor, which is large in size and the charging voltage of the capacitor cannot be adjusted; the non-isolated voltage detection has low anti-interference performance, which affects long-term working stability. Contents of the invention [0003] The purpose of the present invention is to solve the above problems and provide an energy storage circuit. The transformer-isolated charging circuit and the optocoupler-isolated detection circuit can completely isol...

Claims

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Application Information

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IPC IPC(8): G05B19/042H02J7/00G01R19/25G01R15/22G01R15/16G01R15/06
CPCG05B19/042G05B19/0423H02J7/345G01R19/2509G01R15/22G01R15/16G01R15/06G05B2219/21137H02J7/0071H02J7/00
Inventor 胡语嫣
Owner 胡语嫣
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