Apparatus, method and user equipment for supplying power

Abstract

Embodiments of the present invention provide a power supply apparatus and method, and a user equipment. The apparatus includes: a battery electric core, a switch device, a voltage boost circuit, a state detection circuit, and a logic control circuit. The switch device is connected in a current path of the battery electric core. The voltage boost circuit is connected in parallel to the current path, and is configured to boost an output voltage of the battery electric core. The state detection circuit is configured to detect a state of the battery electric core and a state of the apparatus, and generate a state signal. The logic control circuit is configured to receive the state signal from the state detection circuit, and control the switch device according to the state signal, when the battery electric core is in an abnormal charging state, control the switch device to turn off the current path, and when the voltage boost circuit is not required to work, control the switch device to turn on the current path. In the embodiments of the present invention, charging protection for the battery electric core and a bypass function for the voltage boost circuit can be implemented through control that is performed on the switch device by the logic control circuit, so that additional impedance can be reduced and working efficiency can be improved.

Description

technical field [0001] The present invention relates to the field of electronics, and in particular, to an apparatus, method and user equipment for power supply. Background technique [0002] In the design of existing mobile communication terminals, the shutdown voltage of the battery is mostly set between 3.3-3.5V. However, with the advancement of battery technology and the application of new materials, the working voltage of the battery can be lower, so there will be more remaining power in the low voltage section. [0003] In order to make full use of the capacity of the low-voltage section of the battery, it is often necessary to boost the voltage when the battery is at low voltage, so as to ensure that the devices in the circuit can work normally. The current common boost circuit usually requires multiple switching devices, such as metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), to achieve boost and bypass...

AI Technical Summary

Problems solved by technology

Since the switching device has a DC impedance, it will introduce a large impedance on the working path, resulting in a decrease in the overall working efficiency of the system and deteriorating the load capacity of the battery.

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