A method for calculating power adapter power

Abstract

An embodiment of the present invention provides a method for calculating the power of a power adapter. The method is applied to a smart panel, including: when the power adapter supplies power to the smart panel internally or to an external device of the smart panel, the power adapter is obtained through the power metering circuit The instantaneous power value of the secondary end; the instantaneous power value of the primary end of the power adapter is calculated according to the instantaneous power value of the secondary end of the power adapter and the efficiency table, and the efficiency table is used to represent the instantaneous power value of the secondary end of the power adapter and the instantaneous power value of the primary end of the power adapter The conversion ratio of the power value; the power value of the power adapter is calculated according to the instantaneous power value of the primary end of the power adapter and the power supply time. The power supply time is the time when the external charging device is plugged into the USB interface for charging. The power supply duration is the duration of power supply inside the smart panel or the duration of power supply by external devices of the smart panel.

Description

technical field [0001] The invention relates to the field of power calculation, in particular to a method for calculating the power of a power adapter. Background technique [0002] Panels such as socket panels, switch panels, gateway panels, and set-top box panels are frequently used in our daily electrical appliances. At present, traditional panels only have basic functions, that is, converting high-voltage alternating current into low-voltage direct current, and then passing through the socket of the panel (such as USB interface, Type-C interface, Lightning interface, etc.), it cannot be connected to external devices (such as mobile phones, personal computers) wirelessly, for example, a socket with a USB interface can only realize simple charging functions. [0003] However, with the rise of the smart home concept, many traditional electrical appliances including sockets, switches, gateways, set-top boxes and other panels are required to be endowed with more and more func...

AI Technical Summary

Problems solved by technology

[0004] Existing power metering schemes are all used to detect voltage and current on the high-voltage side of the mains (such as 220V AC or 110V AC) to achieve power metering, but the space of the USB socket panel is limited, and the USB interface of the USB socket panel belongs to the low-voltage side (The human body can touch the USB interface), increasing the power metering circuit on the high-voltage side will cause the power metering circuit on the high-voltage side to be very close to the USB port on the low-voltage side, and the safety distance between the high-voltage side and the low-voltage side cannot meet the stringent requirements of China. 3C certification, EU CE, US UL and other relevant safety certification tests, the product cannot be listed

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