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A charging control circuit and its control method

A charging control and electronic circuit technology, applied in the charging control circuit and its control field, can solve problems such as components that are easy to burn

Active Publication Date: 2020-03-13
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The inverter circuit is equipped with a large electrolytic capacitor for energy storage, and there is a large current peak at the moment of power-on, which is easy to burn the components in the circuit

Method used

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  • A charging control circuit and its control method
  • A charging control circuit and its control method
  • A charging control circuit and its control method

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] figure 1 An exemplary circuit configuration of a charging circuit according to the prior art is shown. Such as figure 1 As shown, when the AC power supply is powered on, the rectifier bridge DB1 can rectify the AC power supply into a DC power supply, and use the switching power supply to supply power to the control unit. at this time, figure 1 The switches K1 and K2 shown in are in the disconnected state, and the charging circuit is in a non-working state at this time, that is, the capacitor ( figure 1 C2, C3, C4) shown in the charging. After the control unit receives the power-on signal, the control unit first controls the switch K2 to close, and at this time the switch K1 r...

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PUM

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Abstract

The invention provides a charging control circuit and a control method thereof, wherein the charging control circuit includes: an energy storage subcircuit, including at least one capacitor; a charging subcircuit, including at least one inductor, configured to provide energy to the energy storage subcircuit. The circuit performs charging; a detection subcircuit is configured to detect the magnitude of the charging current in the charging subcircuit; and a control subcircuit is configured to control the charging subcircuit to the charging current according to the magnitude of the charging current. Charging of the energy storage subcircuit. The charging control circuit of the present invention can control the charging circuit not to generate a charging current peak, and prevent the charging current from exceeding a predetermined threshold.

Description

technical field [0001] The invention relates to the technical field of circuit control, in particular to a charging control circuit and a control method thereof. Background technique [0002] The inverter circuit is equipped with a large electrolytic capacitor for energy storage, and there is a large current peak at the moment of power-on, which is easy to burn the components in the circuit. Therefore, it is necessary to add a charging circuit in the circuit to limit the current peak. For example, a common practice in existing air conditioner frequency conversion external units is to use a thermistor (such as a PTC) and a relay to coordinate and control the charging. Contents of the invention [0003] In view of this, the present invention aims to provide a charging control circuit, which realizes current control in the charging circuit in a simple and controllable manner. [0004] In order to achieve the above object, technical solution of the present invention is achie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/36
CPCH02M1/36
Inventor 刘建恒
Owner AUX AIR CONDITIONING LTD BY SHARE LTD