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Detection circuit and method for starting charging

A detection circuit, charging input technology, applied in battery circuit devices, circuit devices, safety/protection circuits, etc., can solve problems such as fire, safety accidents, damage to the internal circuit of the mobile terminal, charging interface, charging adapter, etc.

Active Publication Date: 2017-04-19
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the above factors exist, it is easy to cause safety accidents, ranging from damage to the internal circuit (including the charging circuit), charging interface and charging adapter in the mobile terminal, to severe, it may cause a fire

Method used

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  • Detection circuit and method for starting charging
  • Detection circuit and method for starting charging
  • Detection circuit and method for starting charging

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] It should be noted that the charging adapter in the embodiment of the present invention includes: a power adapter, a charger, an IPAD, a smart phone, and other terminals capable of outputting power signals to charge batteries (cells of mobile terminals).

[0026] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate. It should be noted that "first" in "first USB interface", "first power line" and "first ground line" all refer to; "second USB interface", "second power line" and "Second" in "Second Ground" is also a reference. ...

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Abstract

A detection circuit and a detection method for starting charging are provided. The detection circuit comprises a cell connector, a first controller, a second controller and a switch circuit. The first controller sends an anode contact signal, a cathode contact signal and an electric quantity signal received from the cell connector to the second controller; the second controller sends a start instruction to the first controller if a charging request signal is received, the anode of the cell is well contacted, the cathode of the cell is well contacted, and a voltage of the cell does not exceed a voltage threshold; the first controller sends a connection instruction to the switch circuit to control connection of a charging terminal and a cell terminal of the switch circuit, such that a charging adapter charges the cell through the switch circuit.

Description

technical field [0001] The invention belongs to the field of mobile terminals, in particular to a detection circuit and method for starting charging. Background technique [0002] With the progress of the times, the Internet and mobile communication networks provide a large number of functional applications. Users can not only use mobile terminals for traditional applications, such as: use smart phones to answer or make calls; at the same time, users can not only use mobile terminals for web browsing, picture transmission, games, etc. [0003] While using the mobile terminal to handle things, due to the increase in the frequency of using the mobile terminal, the power of the battery cell of the mobile terminal will be consumed in large quantities, which requires frequent charging; due to the accelerated pace of life, especially more and more emergencies, users hope Charge the batteries of mobile terminals with high current. [0004] With the increase in the frequency of us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/0034H02J7/0036H02J7/0029H02J7/00308H02J7/0045
Inventor 吴克伟
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD