Terminal, charging device and charging system

Abstract

The embodiment of the invention relates to the technical field of charging and discloses a terminal, a charging device and a charging system. The terminal comprises a battery, a first charging controlunit and a charging interface, wherein the charging interface is connected with the battery; the first charging control unit is in communication connection with the external charging device and is used for controlling a first charging unit in the charging device to charge the battery through the charging interface; an input end of the first charging unit in the charging device is connected with an output end of an AC-DC conversion module; the first charging unit is connected with a second charging control unit; the first charging unit is also connected with the battery of the terminal throughthe charging interface of the terminal; and the second charging control unit is used for controlling the first charging unit to charge the battery under the control of the first charging control unit. The battery in the terminal is directly charged through a charging chip which is internally arranged in the charging device, thereby fundamentally solving the problem of charging heating of the terminal caused by the charging chip.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of charging, and in particular, to a terminal, a charging device, and a charging system. Background technique [0002] At present, mobile terminals represented by mobile phones are increasingly playing an important role in daily life, and the demand for large-capacity batteries and high-current fast-charging mobile phones is increasing day by day. [0003] The inventors found that there are at least the following problems in the prior art: the charging structure of the existing terminal (such as a mobile phone) includes: a battery, a charging chip and a charging control unit, and the charging chip charges the battery under the control of the charging control unit. Due to the power loss of the charging chip itself (that is, the efficiency of the charging chip cannot reach 100%) and the ultra-thin structure of the mobile phone, the mobile phone often generates heat when charging, espe...

AI Technical Summary

Problems solved by technology

Due to the power loss of the charging chip itself (that is, the efficiency of the charging chip cannot reach 100%) and the ultra-thin structure of the mobile phone, the mobile phone often generates heat when charging, especially when charging with a high current, the heating is more serious

In addition, the prior art also discloses a charging method that reduces the current on the charging line by using a high-voltage charging method, and uses a parallel connection of double charging chips to increase the charging current into the battery. By reducing the equivalent resistance on the charging chip, it can reduce the The heating of the charging chip, but due to the limitation of the efficiency of the charging chip itself, when charging with a large current, the above charging method cannot fundamentally eliminate the charging heating problem of the terminal

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