Charging circuit, charging system and mobile terminal

A technology for charging circuits and chargers, which can be applied to battery circuit devices, electric vehicles, circuit devices, etc., and can solve the problems of high power, high efficiency, and high cost

Pending Publication Date: 2021-05-14
XIAN WINGTECH ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) Using the ChargerPUMP (charge pump) fast charging chip solution, the charging efficiency can reach more than 95%, and the charging efficiency is relatively high. Generally, the charging power can reach more than 20W. Usually, the power of a single Charger

Method used

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  • Charging circuit, charging system and mobile terminal
  • Charging circuit, charging system and mobile terminal
  • Charging circuit, charging system and mobile terminal

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see figure 1 , the present invention provide...

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Abstract

The invention provides a charging circuit which comprises a plurality of batteries and a switch module. The switch module is connected with the plurality of batteries, and the switch module is used for receiving a first control signal to enable the plurality of batteries to be connected in series so that a charging power supply directly charges the plurality of batteries through a charger. The invention also provides a charging system and a mobile terminal. According to the charging circuit, the charging system and the mobile terminal provided by the invention, rapid charging with the charging power of more than 20W can be realized, a rapid charging chip is not needed, and the purposes of saving the rapid charging chip and saving the cost are achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of charging, in particular to a charging circuit, a charging system and a mobile terminal. 【Background technique】 [0002] As users' requirements for charging time of mobile terminals (such as smart phones) become shorter and shorter, more and more fast protocols and charging schemes emerge in an endless stream. In summary, there are mainly three types as follows: (1) Use the BUCK (step-down voltage) built-in platform ) charging circuit, the charging efficiency is generally 80%-92%, due to its low charging efficiency and large heat loss, the charging power is limited, generally within 20W. (2) Using the solution of charger direct charging, there is no need for a charging chip on the mobile phone, and the voltage adjustment is completed by the charger. Due to protocol restrictions, the maximum current of the charger is 5A, and the charging power is limited, generally within 20W. (3) Using the ChargerPUMP (...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0013
Inventor 顾建祥
Owner XIAN WINGTECH ELECTRONICS TECH
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