Charging circuit, terminal and charging system

A technology of charging circuit and voltage detection circuit, which is applied in the direction of charging/discharging current/voltage regulation, battery disconnection circuit, battery circuit device, etc., and can solve problems such as hidden safety hazards of charging circuit and rechargeable battery

Active Publication Date: 2017-10-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a charging scenario that requires high real-time adjustment, if the current demanded by the terminal load suddenly decreases and the output of the power adapter is not adjusted in time, ...

Method used

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

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Embodiment Construction

[0115] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0116] With the development of science and technology, the functions of terminals (such as smart phones, wearable devices, tablet computers and other electronic devices) have become more and more powerful. Users can use terminals for office and entertainment, so that terminals have become indispensable in people's daily life. missing part. However, the battery life of the terminal is limited, and the user needs to charge the terminal continuously.

[0117...

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PUM

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Abstract

The technical scheme of the invention provides a charging circuit, a terminal and a charging system. The charging circuit is connected with a charger, a terminal load and a battery and is characterized by comprising a first regulation circuit, a current detection circuit, a voltage detection circuit and a control circuit, wherein a first end of the first regulation circuit is connected with the charger, a second end of the first regulation circuit is also connected with the terminal load, a third end of the first regulation circuit is connected with the control circuit, a second of the current detection circuit is connected with a positive electrode of the battery, a negative electrode of the battery is connected with the charger, and the current detection circuit is connected in series between the negative electrode of the battery and the charger. In the charging circuit provided by the invention, a charging circuit can be adjusted when the charging current abruptly changes so as to prevent damage of an excessive large charging current to the charging circuit and the battery.

Description

technical field [0001] The invention relates to charging technology, in particular to a charging circuit, a terminal and a charging system. Background technique [0002] With the development of science and technology, the function of the terminal becomes more and more powerful, and the user can use the terminal for office work and entertainment, so that the terminal has become an indispensable part of people's daily life. However, the battery life of the terminal is limited, and the user needs to charge the terminal continuously. In order to ensure that the user can use the terminal normally, fast technology has become a preferred solution for charging. [0003] At present, the common fast charging technologies can be mainly divided into two categories: low-voltage high-current fast charging technology, high-voltage low-current fast charging technology. Regardless of low-voltage high-current fast charging or high-voltage low-current fast charging, it will be converted into...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0036H02J7/0068H02J7/007H02J7/00304H02J7/00308H02J7/00H02J7/0031
Inventor 刘新宇刘彦丁刘策王平华马金博
Owner HUAWEI TECH CO LTD
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