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Charging device and USB cable and charging system

A charging device and USB interface technology, applied in the field of circuits, can solve the problems of difficulty in mass production and high production costs, and achieve the effects of avoiding burning, improving safety, and improving user experience.

Active Publication Date: 2019-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the production cost of identifying the attributes of the USB cable by using the packaged chip method in the USB cable is very high, and it is difficult to mass produce

Method used

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  • Charging device and USB cable and charging system
  • Charging device and USB cable and charging system
  • Charging device and USB cable and charging system

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Embodiment Construction

[0031] The technical solution in this application will be described below with reference to the accompanying drawings.

[0032] The terminal equipment in the embodiment of the present application may refer to user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the future 5G network or terminals in the future evolution of the Public Land Mobile Network (...

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Abstract

The present application provides a charging device and a USB cable and a charging system. The charging device comprises: a detection circuit, a universal serial bus USB interface, and a processor, wherein the USB interface is used for connecting the USB cable, a circuit of a signal channel of the USB cable includes a first resistor, and a resistance value of the first resistor is used to identifyattribute of the USB cable; the detecting circuit is configured to detect the first resistor, and to report detection results to the processor, a first end of the detecting circuit is connected to thefirst resistor through the USB interface, and a second end of the detecting circuit is connected to a power source of the charging device, and the processor is used for determining the resistance value of the first resistor according to the detection results of the first resistor; and the attribute of the USB cable is determined according to the resistance value of the first resistor. The charging device determines the attribute of the USB cable by detecting the resistance value of the first resistor in the USB cable and improves security of charging terminal devices with USB cable

Description

technical field [0001] The present application relates to the circuit field, in particular to a charging device, a USB cable and a charging system in the circuit field. Background technique [0002] With the rapid development of the terminal product market and consumer products in recent years, the battery capacity of terminal products is getting larger and larger, and the charging current is also increasing. This has caused more and more market users to report safety issues such as burnt mobile phones and burned cables. A large part of the reason is that the Universal Serial Bus (USB) cable used by the user is a non-standard cable whose quality cannot be guaranteed or whose specification does not meet the charging requirements, which may cause serious damage to the user's personal and property . At present, high-end markets in Japan, Europe and the United States have very strict regulations on the safety of such electrical appliances. Some countries have clear legal requi...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01R31/06H01R13/66
CPCH01R13/665H01R31/065H01R13/66H01R31/06H02J7/00
Inventor 雷晓鹏王永超
Owner HUAWEI TECH CO LTD