Apparatus and method for charging mobile terminal

Abstract

The invention discloses a charging device and a charging method of a mobile terminal, which is applied to the mobile terminal with a system connector or a special charging interface. The mobile terminal is connected with an external charger. The invention is characterized in that the charging device comprises a digital baseband unit, an analog baseband unit, an or gate device, a charging module and batteries. As a platform based on software control charging is adopted, various unconventionalities of charging function in cellphone design are resolved, thereby improving the reliability of charging function of such cellphone, additionally further being capable of reducing the development difficulty of charging module softwares, shortening the debugging period of charging modules, and improving the quality of research and development.

Description

technical field [0001] The invention relates to the field of communication and other electronic fields, in particular to a new method for designing a charging function module of a wireless terminal. Background technique [0002] At present, mobile phone (Mobile) technology has obtained great development, and the new function of mobile phone emerges in an endless stream, develops from single calling function to smart phone (Smart Phone) direction, also appeared music (MP3) mobile phone, karaoke mobile phone during this period. , camera phones, MP4 phones and other feature phones. In addition, in the coming 3G era, mobile terminals will provide richer functions, such as: videophone, streaming media, 3G services and so on. The provision of all these portable functions and services requires sufficient battery power for support. When the battery of the mobile terminal is exhausted, the mobile terminal can restart work only after the energy of the battery must be supplemented by...

AI Technical Summary

Problems solved by technology

[0009] Although the above charging method has been practically applied, from the perspective of research and development practice and after-sales customer return, this charging method has the following disadvantages: (1) when the charging ends, there is a false full battery phenomenon, which directly affects the mobile phone. Standby and talk time; (2) The constant voltage charging process is related to the characteristics of the charger. Well, there will be the introduction of power grid surge voltage, and usually the withstand voltage of ABB is not very high, so the working life of ABB will be tested; (4) When the battery power is low, there is a problem of not turning on the battery when it is plugged into the charger. (5) Since the power circuit unit in Figure (1) is usually a power PNP tube or a power CMOS tube, this circuit is very susceptible to the influence of the ambient temperature; (6) More importantly, the charging adaptive algorithm is quite Complicated, it requires a lot of manpower and material resources to debug the charging curve and experiment to verify the reliability of charging performance during product development, which greatly affects the product development cycle and R&D cost

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