Current loop communication and power supply control circuit and method for air conditioner and its outdoor unit

Abstract

The present invention belongs to the field of power supply control technology and provides a current loop communication and power supply control circuit of an air conditioner and an outdoor unit and a method thereof. According to the current loop communication and power supply control circuit, after the outdoor unit is powered, a current loop wake-up control module controls the second output end of a power supply circuit to output power supply such that the main controller and other load in the outdoor unit can be powered to work, when the air conditioner is shut down, the main controller controls the load in the outdoor unit to stop working, the current loop wake-up control module controls the second output end of the power supply circuit to stop outputting power supply, thus the power supply of the main controller and other load of the outdoor unit is cut, so the power consumption of the outdoor unit in standby is reduced, and the standby power of the air conditioner can be reduced to satisfy the requirement of low energy consumption.

Description

Technical field [0001] The invention belongs to the technical field of power supply control, and in particular relates to a current loop communication and power supply control circuit and method of an air conditioner and its outdoor unit. Background technique [0002] At present, as countries around the world are gradually paying attention to environmental protection issues and continuously introducing higher standards of standby energy consumption, all home appliance manufacturers are committed to reducing the standby energy consumption of home appliances. For air conditioners, since they generally include indoor units and outdoor units, the indoor units usually provide power to the outdoor units. If the air conditioner is designed for low-power standby, the indoor unit is usually used to perform the outdoor unit. The way the power is cut off can completely power down the outdoor unit, thereby reducing the standby power consumption of the outdoor unit. [0003] However, if the ai...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a current loop communication and power supply control circuit for the outdoor unit of an air conditioner, which aims to solve the problem that the existing air conditioner has high standby power and cannot meet the low energy consumption requirements when it is in standby due to the power supplied by the outdoor unit

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