Method and system for supplying power to mobile terminal

Abstract

The invention discloses a method and a system for supplying power to a mobile terminal. In the method, two power supply channels 1 and 2 of a programmable power supply are used for supplying power supply voltages needed by a battery terminal and a charging terminal of the mobile terminal when the mobile terminal works normally. The method particularly comprises the following steps that: the character that the charging terminal of the mobile terminal also generates startup current when the loaded power supply voltage is insufficient is utilized, and before electricity is supplied to the mobile terminal formally, whether a power supply terminal of the mobile terminal is correctly connected is judged by outputting a test voltage in advance and detecting the startup current, so the power supply safety of the mobile terminal is ensured, the problem that the mobile terminal is damaged due to reverse connection of the power supply terminal is avoided, furthermore, the generation of fault machines is reduced, the production cost is reduced, and the first pass yield rate of production is improved. The method for power supply has a simple design, can provide conveniences for a line operator to make judgments, and is suitable for popularization and application in related mobile products such as mobile phones, MP4 and the like.

Description

technical field [0001] The invention belongs to the technical field of power supply methods and power supply systems, and in particular relates to a power supply method capable of ensuring correct connection between a power supply source and a terminal of a mobile terminal, and a power supply system designed based on the power supply method. Background technique [0002] For current mobile terminals such as mobile phones, there are usually two power supply terminals: DCIN and VBT. Among them, DCIN refers to the charging terminal of the mobile phone. During production in the factory, if the power supply is used to directly supply power to the DCIN terminal, the mobile phone can be turned on automatically; VBT refers to the battery terminal of the mobile phone. If the power supply is used to directly supply power to the VBT terminal, the mobile phone Will not boot. Generally, the supply voltage range of the DCIN terminal is [4.2V, 5.0V]; the supply voltage range of the VBT te...

AI Technical Summary

Problems solved by technology

However, the enforceability of this artificial management control method is obviously relatively poor, and it is impossible to fundamentally ensure the accuracy of wiring

[0005] Based on this, how to design a test requirement suitable for the mobile phone production line, to avoid the overvoltage damage of the main board of the mobile phone caused by the reverse connection of the DCIN terminal and the VBT terminal, the wiring detection method and the safe power supply system are a major problem that needs to be solved in the field of mobile terminal manufacturing. question

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