CN103178583B - Mobile phone USB (Universal Serial Bus) interface charging system supporting charging for other mobile devices and charging realization method of mobile phone USB interface charging system - Google Patents

Mobile phone USB (Universal Serial Bus) interface charging system supporting charging for other mobile devices and charging realization method of mobile phone USB interface charging system Download PDF

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Publication number
CN103178583B
CN103178583B CN201310096884.0A CN201310096884A CN103178583B CN 103178583 B CN103178583 B CN 103178583B CN 201310096884 A CN201310096884 A CN 201310096884A CN 103178583 B CN103178583 B CN 103178583B
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China
Prior art keywords
charging
mobile phone
usb interface
switch
data line
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Expired - Fee Related
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CN201310096884.0A
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Chinese (zh)
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CN103178583A (en
Inventor
唐连满
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Chengdu Xike Technology Co Ltd
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Chengdu Xike Technology Co Ltd
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Priority to CN201310096884.0A priority Critical patent/CN103178583B/en
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Publication of CN103178583B publication Critical patent/CN103178583B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a mobile phone USB (Universal Serial Bus) interface charging system supporting charging for other mobile devices and a charging realization method of the mobile phone USB interface charging system. The mobile phone USB interface charging system comprises a USB interface, a power switch and a data line switch, wherein the power switch is connected with a power cord of the USB interface, the data line switch is connected with a data signal line of the USB interface, the switch-on and switch-off states of the power switch are controlled by power switch control information, and the switch-on and switch-off states of the data line switch are controlled by data line switch control information. The charging realization method comprises the steps of: connecting a mobile phone with a mobile device to be charged through a USB data line, selecting the mobile phone to enter a charging mode by a user, connecting the power cord at the USB interface with a power supply inside the mobile phone by the power switch under the control of the power switch control information, selecting a charging type by the user and the like. The mobile phone USB interface charging system and the charging realization method of the mobile phone USB interface charging system can be used for charging other mobile devices such as mobile phones and tablet personal computers by utilizing the USB interface of the mobile phone, and selecting different output currents for charging according to the mobile phones or the tablet personal computers.

Description

A kind of method supporting the mobile phone USB interface charging system into other charging of mobile devices and realization charging thereof
Technical field
The present invention relates to mobile terminal device field, particularly a kind of method supporting the mobile phone USB interface charging system into other charging of mobile devices and realization charging thereof.
Background technology
The mobile device such as mobile phone, panel computer is because CPU speed is fast, screen is large, function is many; cause the service time of battery generally not long; mobile device is in the process used; often can run into the situation of electricity deficiency; if be now just in time in outdoor or other do not have the place of charging device, have to stop the use to mobile device, much important thing can be caused like this to can not get processing timely.Almost everyone has mobile phone now, if mobile phone has the function for other charging of mobile devices, when the mobile device of oneself does not have electric, around just can using, other people mobile phone charges, and this makes it possible to continue to use mobile device process important thing.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of support into other charging of mobile devices mobile phone USB interface charging system and realize the method for charging, this system and method can utilize the USB interface of mobile phone to provide two kinds of charging modes for other mobile devices.
The object of the invention is to be achieved through the following technical solutions: a kind of mobile phone USB interface charging system supported as other charging of mobile devices, it comprises USB interface, mains switch, data line switch, mains switch is connected with the power line of USB interface, data line switch is connected with the data signal line of USB interface, mains switch controls its folding condition by mains switch control information, and data line switch controls its folding condition by data line switch control information.
Mains switch of the present invention is single-pole double-throw switch (SPDT).
Data line switch of the present invention is double-point double-throw switch.
Support that the mobile phone USB interface into other charging of mobile devices realizes a method for charging, it comprises the following steps:
(1) mobile phone is connected by USB data line with mobile device to be charged;
(2) user selects mobile phone to enter charge mode, namely externally provides current-mode;
(3) power line of USB interface and interior of mobile phone power supply are connected by mains switch under the control of mains switch control information;
(4) user selects charge type, namely select special charging port DCP charging, or standard down port SDP charges;
(5), when selecting special charging port DCP charging, data line switch by two data lines holding wire short circuits of USB interface, makes mobile device to be charged can charge with the electric current of 1.5A under the control of data line switch control signal;
(6), when choice criteria downlink port SDP charges, do not produce data line switch control signal, data wire is still kept intact, and mobile device to be charged charges with the electric current of 500mA.
The invention has the beneficial effects as follows: use of the present invention can make the USB interface of mobile phone not only have general transfer of data and the function for mobile phone charging itself, can charge for other mobile devices such as mobile phone, panel computer simultaneously, and different output current can be selected to charge according to mobile phone or panel computer, structure of the present invention is simple, do not need to do too large change in original USB interface, there is good practicality.
Accompanying drawing explanation
Fig. 1 is mobile phone USB interface charging system structure chart of the present invention;
Fig. 2 is the flow chart that mobile phone USB interface of the present invention realizes the method for charging.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, a kind of mobile phone USB interface charging system supported as other charging of mobile devices, it comprises USB interface, mains switch, data line switch, mains switch is connected with the power line of USB interface, data line switch is connected with the data signal line of USB interface, mains switch controls its folding condition by mains switch control information, and data line switch controls its folding condition by data line switch control information.
Mains switch of the present invention is single-pole double-throw switch (SPDT).
Data line switch of the present invention is double-point double-throw switch.
As shown in Figure 2, a kind of method supporting the mobile phone USB interface realization charging into other charging of mobile devices, it comprises the following steps:
(1) mobile phone is connected by USB data line with mobile device to be charged;
(2) user selects mobile phone to enter charge mode, namely externally provides current-mode;
(3) power line of USB interface and interior of mobile phone power supply are connected by mains switch under the control of mains switch control information;
(4) user selects charge type, namely select special charging port DCP charging, or standard down port SDP charges;
(5), when selecting special charging port DCP charging, data line switch by two data lines holding wire short circuits of USB interface, makes mobile device to be charged can charge with the electric current of 1.5A under the control of data line switch control signal;
(6), when choice criteria downlink port SDP charges, do not produce data line switch control signal, data wire is still kept intact, and mobile device to be charged charges with the electric current of 500mA.
According to USB interface charge protocol BC1.1, charged by USB interface, need to identify charging device, namely will be identified charging port type by charging device, then could determine that obtaining how many electric currents is used for charging according to port type.USB charging port is divided into standard down port SDP, charging downlink port CDP and special charging port DCP, SDP and generic USB host device interface, this interface can only provide 500mA electric current, need not be used for high-current equipment charging, and DCP can provide up to 1.5A electric current.By the process of charging device identification DCP be: data signal line D+ line is pulled to system logic voltage by the resistance of 10k Ω, data signal line D-line is pulled to GND by the resistance of 100k Ω.If what connect is DCP(D+ and D-short circuit), D-will become high level, and it is DCP type that such charging device just can identify port, can obtain maximum 1.5A electricity electric current from port.
In the present invention, this charging system adds data line switch and mains switch in mobile phone USB port, mains switch controls mobile phone according to power switch control signal and whether is in charge mode, and under charge mode, the electric current of output is provided by the power supply after battery of mobile phone transforms.Data line switch according to data line switch control signal decide mobile phone charging time be as SDP class or DCP class, namely determine export size of current, DCP type can provide the electric current being large 1.5A, may be used for the charging of Large-scale Mobile equipment as panel computer etc.
In the present invention, the method using this charging system to realize charging is: first mobile phone is connected by USB data line with mobile device to be charged by user, then user selects mobile phone to enter charge mode, namely externally current-mode is provided, power switch control signal controls mains switch makes the power line of USB interface and interior of mobile phone power supply connect, user selects charge type again, i.e. SDP type or DCP type, namely select the size that electric current exports, if what select is SDP type, then do not produce data line switch control signal, two single data holding wires still keep original state, outwards provide the electric current of 500mA, if what select is DCP type, then produce data line switch control signal control data wiretap and make two single data holding wire short circuits, to enable mobile device to be charged according to protocol identification outbound port type, thus the electric current obtained up to 1.5A charges.

Claims (4)

1. support the mobile phone USB interface charging system for other charging of mobile devices for one kind, it is characterized in that: it comprises USB interface, mains switch, data line switch, mains switch is connected with the power line of USB interface, data line switch is connected with the data signal line of USB interface, be connected by USB data line with mobile device to be charged by charging device, charged by USB interface, charging device is identified, namely by the USB charging port type of charging device identification charging device, how many electric currents are obtained for charging according to USB charging port type decided, USB charging port comprises standard down port SDP, charging downlink port CDP and special charging port DCP, SDP is generic USB host device interface, SDP interface provides 500mA electric current, for small area analysis equipment charge, DCP interface provides up to 1.5A electric current, charge for high-current equipment, mains switch controls its folding condition by mains switch control information and controls mobile phone and whether be in charge mode, and data line switch controls its folding condition by data line switch control information, and to decide mobile phone charge type be SDP class or DCP class,
By the process of charging device identification DCP charging port type be: data signal line D+ line is pulled to system logic voltage by the resistance of 10k Ω, data signal line D-line is pulled to GND by the resistance of 100k Ω, if what connect is DCP charging port, then D+ and D-short circuit, D-becomes high level, it is DCP type that such charging device just can identify port, maximum 1.5A electric current can be obtained from port, structure is simple, do not need to do too large change in original USB interface, there is good practicality.
2. a kind of mobile phone USB interface charging system supported as other charging of mobile devices according to claim 1, is characterized in that: described mains switch is single-pole double-throw switch (SPDT).
3. a kind of mobile phone USB interface charging system supported as other charging of mobile devices according to claim 1, is characterized in that: described data line switch is double-point double-throw switch.
4. support that the mobile phone USB interface for other charging of mobile devices realizes a method for charging, it is characterized in that: it comprises the following steps:
(1) mobile phone is connected by USB data line with mobile device to be charged, is charged by USB interface, identifies charging device;
(2) user selects mobile phone to enter charge mode, namely externally provides current-mode;
(3) power line of USB interface and interior of mobile phone power supply are connected by mains switch under the control of mains switch control information;
(4) user selects charge type, and data line switch controls its folding condition by data line switch control information, namely select special charging port DCP charging, or standard down port SDP charges;
By the process of charging device identification DCP charging port type be: data signal line D+ line is pulled to system logic voltage by the resistance of 10k Ω, data signal line D-line is pulled to GND by the resistance of 100k Ω, if what connect is DCP charging port, then D+ and D-short circuit, D-becomes high level, it is DCP type that such charging device just can identify port, can obtain maximum 1.5A electric current from port;
(5), when selecting special charging port DCP charging, data line switch by two data lines holding wire short circuits of USB interface, makes mobile device to be charged can charge with the electric current of 1.5A under the control of data line switch control signal;
(6), when choice criteria downlink port SDP charges, do not produce data line switch control signal, data wire is still kept intact, and mobile device to be charged charges with the electric current of 500mA.
CN201310096884.0A 2013-03-25 2013-03-25 Mobile phone USB (Universal Serial Bus) interface charging system supporting charging for other mobile devices and charging realization method of mobile phone USB interface charging system Expired - Fee Related CN103178583B (en)

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CN105022468B (en) * 2014-04-21 2018-06-01 国基电子(上海)有限公司 USB adapter and USB line
TWI508411B (en) 2014-04-21 2015-11-11 鴻海精密工業股份有限公司 Universal serial bus adaptor and universal serial bus cable
TWI616028B (en) * 2014-08-14 2018-02-21 新唐科技股份有限公司 Chip and transmittal device and control method thereof
CN106300466A (en) * 2015-05-26 2017-01-04 联想移动通信科技有限公司 Method, device and the terminal of a kind of OTG quick charge
CN105207284B (en) * 2015-08-25 2018-06-26 青岛海信移动通信技术股份有限公司 Main equipment is to the method for supplying power to and main equipment of slave device
CN105846494A (en) * 2016-04-25 2016-08-10 乐视控股(北京)有限公司 External charging mobile terminal, and mobile terminal charging system and method
CN105975038A (en) * 2016-04-27 2016-09-28 北京小米移动软件有限公司 Prompt method and device of charging port detection result
CN106026247A (en) * 2016-06-17 2016-10-12 上海与德通讯技术有限公司 Charging equipment and charging method thereof
CN106502558A (en) * 2016-09-21 2017-03-15 奇酷互联网络科技(深圳)有限公司 Terminal device and its method of operating and operation device
CN106340780A (en) * 2016-09-21 2017-01-18 奇酷互联网络科技(深圳)有限公司 Terminal device and control method thereof
CN106300551A (en) * 2016-09-26 2017-01-04 宇龙计算机通信科技(深圳)有限公司 Electronic installation and charging method thereof
CN106356935A (en) * 2016-09-26 2017-01-25 宇龙计算机通信科技(深圳)有限公司 Electronic device and charging method thereof
CN106300552A (en) * 2016-09-26 2017-01-04 宇龙计算机通信科技(深圳)有限公司 Electronic installation and charging method thereof
CN106374566A (en) * 2016-09-26 2017-02-01 宇龙计算机通信科技(深圳)有限公司 Electronic device and charging method thereof
CN106655339B (en) * 2016-11-14 2019-07-05 青岛海信移动通信技术股份有限公司 A kind of charging management method of mobile terminal, device and mobile terminal
CN106786860A (en) * 2016-12-13 2017-05-31 合肥联宝信息技术有限公司 The control method and electronic equipment of a kind of quick charge
CN106802872A (en) * 2016-12-16 2017-06-06 华勤通讯技术有限公司 A kind of method and terminal that equipment room charging is carried out by USB interface
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Address after: Two Lu Tian Hua high tech Zone of Chengdu City, Sichuan province 610041 No. 219 Tianfu Software Park C District 12 building 6 layer

Patentee after: Chengdu Xike Technology Co.,Ltd.

Address before: The middle Tianfu Avenue in Chengdu city Sichuan province 610041 No. 765 talent Software Park A District No. 1 Building 2 room 214

Patentee before: Chengdu Xike Technology Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20150311

Termination date: 20160325