System and method for reducing heating value in mobile terminal charging

Abstract

The invention discloses a system and a method for reducing a heating value in mobile terminal charging. The method includes the steps that A, a clock management module sends temperature detection signals every other cycle, and a central processing unit (CPU) carries out temperature detection according to the temperature detection signals; B, an obtained temperature value is compared with an over-temperature threshold value of a battery and a power management chip in a memorizer by the CPU, and if the temperature value exceeds the over-temperature threshold value, charging currents are reduced; and C, the CPU detects the temperature of the battery and the power management chip after a cycle interval through a microprocessor, and if the temperature exceeds the over-temperature threshold value, the power management chip is controlled through the microprocessor to close a charging function. According to the system and the method, the heating value of a mobile phone in the charging process can be reduced, if the heating value of the mobile phone reaches the threshold value, the current value of constant current charging is halved, and if the temperature is not reduced below a prewarning value yet, the charging function is closed. Until the temperature of the mobile phone returns to be in a normal temperature, the charging function is opened again. According to the system and the method, not only is the temperature of the mobile phone in the charging process is reduced, but also safety of the mobile phone in the charging process is further improved.

Description

technical field [0001] The present invention relates to a smart phone, in particular to a system and method for reducing the calorific value of a mobile terminal when charging, and is mainly used to solve the problem that the battery generates a large amount of heat when charging a mobile terminal such as a smart phone, which easily leads to a shortened service life of the battery. Problems with damaged or exploded batteries. Background technique [0002] At present, smart phones are becoming more and more popular, and it is well known that smart phones consume a lot of power. Therefore, smart phones basically use large-capacity batteries. Large-capacity batteries basically use high-current charging (fast charging). The advantage of high-current charging is fast charging. However, during the charging process of the mobile phone, a large amount of heat will be generated inside the mobile phone and on the battery. The service life of the mobile phone and battery, even chargin...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the object of the present invention is to provide a system and method for reducing the calorific value of a mobile terminal when charging, so as to solve the problem that the battery generates a large amount of heat when charging a mobile terminal such as a smart phone, which may easily lead to shortened battery life, battery damage or explosion problem

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