Circuit and method for power supply of electronic device and electronic device

Abstract

The invention discloses a circuit and method for power supply of an electronic device and the electronic device. The circuit comprises a voltage monitoring circuit, a control circuit, an auxiliary power supply circuit and a main power supply circuit comprising a battery. The auxiliary power supply circuit is used for collecting energy and converting the energy into electric energy and storing the electric energy; the voltage monitoring circuit is used for monitoring voltage of the auxiliary power supply circuit, sending first notification signals to the control circuit when voltage of the auxiliary power supply circuit reaches a first preset value, and sending second notification signals to the control circuit when voltage of the auxiliary power supply circuit is lower than a second preset value, wherein the first preset value is larger than the second preset value; and the control circuit is used for converting a working power supply circuit of the electronic device into the auxiliary power supply circuit when receiving the first notification signals, and switching the working power supply circuit of the electronic device into the main power supply circuit when receiving the second notification signals. According to the technical scheme, endurance working time of the electronic device can be prolonged to the largest extent, and accordingly user experience is improved.

Description

technical field [0001] The invention relates to the field of power supply of electronic equipment, in particular to a power supply circuit of electronic equipment, a power supply method and an electronic equipment. Background technique [0002] At present, smart electronic devices, such as smart bracelets, smart watches, smart glasses, smart buttons, etc., are mostly powered by button batteries or rechargeable lithium batteries. Due to the limited capacity of button batteries, users need to replace them frequently. batteries; and rechargeable lithium batteries are limited by the limited space of electronic equipment, and the battery capacity of lithium batteries generally does not exceed 100mAh. Therefore, the existing electronic equipment has a small capacity of a power supply battery and a short battery life of the electronic equipment, which reduces user experience. Contents of the invention [0003] The present invention provides a power supply circuit of an electroni...

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Problems solved by technology

[0003] The present invention provides a power supply circuit for electronic equipment, a power supply method and an electronic equipment, so as to solve the problem of reduced user experience caused by short battery life of electronic equipment

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