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Switching circuit with double-voltage automatic switching function and switching method of switching circuit

A technology for automatic switching and conversion of circuits, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of inability to switch, inability to use switching power supplies, etc., and achieve the effect of simple structure

Pending Publication Date: 2019-09-06
DONGGUAN JIEKANG ULTRASONIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And most products cannot switch between 110V and 220V voltage
This has brought a lot of inconvenience to manufacturers and users
In terms of power supply, the switching power supply has realized the use of 80V-260V wide voltage, but many product loads such as ultrasonic drive are directly powered by 110V or 220V, and switching power supply cannot be used

Method used

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  • Switching circuit with double-voltage automatic switching function and switching method of switching circuit
  • Switching circuit with double-voltage automatic switching function and switching method of switching circuit

Examples

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Embodiment Construction

[0032] The present invention is further described in conjunction with the following examples.

[0033] Depend on Figure 1 to Figure 2 It can be seen that a conversion circuit for dual-voltage automatic switching described in this embodiment includes an identification module, a PWM control module, and a half-bridge and full-bridge conversion module;

[0034] The identification module is used to identify the grid input voltage and drive the PWM control module to work according to the grid input voltage;

[0035] The half-bridge and full-bridge conversion modules include a first bridge arm 1 and a second bridge arm 2; the first bridge arm 1 includes a first drive module, a first switch tube and a second switch tube; the second bridge arm Arm 2 includes a second drive module, a third switch tube and a fourth switch tube;

[0036] The PWM control module is used to send pulse signals to the first drive module and the second drive module respectively according to the identificatio...

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PUM

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Abstract

The invention relates to the field of power electronic technologies, in particular to a switching circuit with a double-voltage automatic switching function. The switching circuit comprises a recognition module, a PWM control module and a half-bridge and full-bridge switching module; the half-bridge and full-bridge switching module comprises a first bridge arm and a second bridge arm; the first bridge arm comprises a first driving module, a first switching tube and a second switching tube; the second bridge arm comprises a second driving module, a third switching tube and a fourth switching tube; and the switching circuit further comprises a load module, wherein the load module is connected between a common connection end of the first switching tube and the second switching tube and a common connection end of the third switching tube and the fourth switching tube. According to the switching circuit, through the arrangement of the recognition module, the PWM control module, the half-bridge and full-bridge switching module and the load module, the half-bridge and full-bridge switching module can automatically switch between a half-bridge state and a full-bridge state according to themagnitude of an input voltage, and therefore the switching circuit is compatible with a 220V voltage and a 110V voltage simultaneously.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a dual-voltage automatic switching conversion circuit and a conversion method thereof. Background technique [0002] At present, the voltage in different regions of the world is different, mainly 110V, 220V, and 230V. And most products cannot switch between 110V and 220V voltage. This brings a lot of inconvenience to manufacturer and user. In terms of power supply, the switching power supply has realized the use of 80V-260V wide voltage, but many product loads such as ultrasonic drives are directly powered by 110V or 220V, and switching power supply cannot be used. Therefore, a circuit that can directly realize 110V and 220V load conversion is needed to meet the user's configuration requirements. Contents of the invention [0003] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, to provide a dual-voltage automati...

Claims

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Application Information

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IPC IPC(8): G05F1/625
CPCG05F1/625
Inventor 周均钟华
Owner DONGGUAN JIEKANG ULTRASONIC EQUIP