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Detection method, detection device and charger

A detection device and detection method technology, applied in the field of electronics, can solve problems such as charger and terminal burning, and achieve the effect of avoiding low impedance

Inactive Publication Date: 2016-12-07
LETV HLDG BEIJING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide a detection method, device and charger to solve the problem in the prior art caused by the inability to automatically detect whether there are foreign objects at the charging interface of the terminal and the charging interface of the charger. The problem of charger and terminal being burned

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  • Detection method, detection device and charger
  • Detection method, detection device and charger
  • Detection method, detection device and charger

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Embodiment 1

[0070] The embodiment of the present invention provides a detection method, please refer to figure 1 , which is a schematic flow chart of a detection method provided by an embodiment of the present invention. The method is applied to a process in which a charger supplies power to a terminal through a charging line. The charger includes a controller and a sampling resistor, and the sampling resistor is located on the charging circuit.

[0071] Such as figure 1 As shown, the method includes the following steps:

[0072] S101. During the process of supplying power to the terminal through the charging circuit through the charging line, detect the voltage at both ends of the sampling resistor.

[0073] Specifically, in the embodiment of the present invention, the sampling resistor is located on the charging circuit.

[0074] S102, according to the detected voltage across the sampling resistor, determine whether there is a foreign object at the charging interface.

[0075] Specif...

Embodiment 2

[0086] Based on the detection method provided by the first embodiment above, the embodiment of the present invention specifically describes the implementation of "judging whether there is a foreign object at the charging interface according to the detected voltage across the sampling resistor" in S102.

[0087] In the embodiment of the present invention, it can be judged whether there is a foreign object at the charging interface according to the voltage at both ends of the sampling resistor. If a foreign object enters at least one of the charging interface of the terminal and the charging interface of the charger, the impedance between the internal pins of the charging interface with the foreign object will become lower, or even a short circuit will occur. Moreover, if foreign matter enters at least one of the charging interface of the terminal and the charging interface of the charger, when the charger supplies power to the terminal, the current on the charging circuit will i...

Embodiment 3

[0094] Based on the detection method provided by the first embodiment above, the embodiment of the present invention specifically describes the implementation manner of "if it is determined that there is a foreign object at the charging interface, interrupt the power supply to the terminal" in S103.

[0095] Please refer to figure 2 , which is a working diagram of the detection method provided by the implementation of the present invention. Such as figure 2 As shown, the charger is connected to the terminal through a charging cable, and the charger supplies power to the terminal through the connected charging cable.

[0096] Such as figure 2 As shown, the charger also includes a protection switch, point A is used to connect to the power supply, so the power supply can be connected in series with the sampling resistor through the protection switch, when the protection switch is closed, the power supply can supply power to the terminal through the charger and the charging l...

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Abstract

Embodiments of the invention provide a detection method, a detection device and a charger. On one hand, the detection method comprises steps that in a process of supplying power to a terminal by a charging line via a charging circuit, voltages at two ends of a sampling resistor are detected, wherein the sampling resistor is positioned on the charging circuit; then according to the voltages at the two ends of the sampling resistor, whether a foreign matter exist at a charging interface or not is determined, wherein the charging interface is positioned between the charging circuit and the terminal; and if the foreign matter exist at the charging interface, power supplying to the terminal is stopped. Therefore, the technical scheme provided by the embodiments of the invention solves a problem in the prior art that a charger and a terminal are burned out as whether foreign matters exist at a charging interface of the terminal and a charging line interface of the charger or not cannot be automatically detected.

Description

【Technical field】 [0001] The invention relates to the field of electronic technology, in particular to a detection method, device and charger. 【Background technique】 [0002] At present, the charger generally provides power to the terminal by connecting the charging cable. If a foreign object enters the charging interface of the terminal used to connect the charging cable or the charging interface of the charger, it is easy to cause a short circuit phenomenon, or generate a current path impedance. Bigger phenomenon. In the prior art, the user can only manually check whether there is any foreign matter at the charging interface. [0003] In the course of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] In the prior art, if the user does not take the initiative to check whether there is a foreign object at the charging interface, if there is a foreign object at least one of the charging interface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/02
CPCG01V3/02
Inventor 刘志恒王兴
Owner LETV HLDG BEIJING CO LTD
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