| 主权项 |
1. A high efficiency charging system comprising a power supplier and a power receiver, wherein the power supplier and the power receiver are connected through a transmission wire, so that power is transmitted from the power supplier to the power receiver, the transmission wire including positive and negative power transmission lines and a signal transmission line, the power receiver comprising:
a voltage conversion circuit for converting an adjustable input voltage provided from the power supplier to an output voltage and generating an output current for charging a battery, wherein the voltage conversion circuit adaptively adjusts the output current according to a voltage drop between the adjustable input voltage and the output voltage; and a first control circuit coupled to the voltage conversion circuit, wherein the first control circuit senses the adjustable input voltage and the output voltage and transmits a transmission signal to the power supplier according to the voltage drop between the adjustable input voltage and the output voltage, so as to instruct the power supplier to control the adjustable input voltage, thereby keeping the voltage drop within a predetermined range. |
