CN103904703A - Power supply capacity discrimination method of charging equipment - Google Patents
Power supply capacity discrimination method of charging equipment Download PDFInfo
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- CN103904703A CN103904703A CN201210572222.1A CN201210572222A CN103904703A CN 103904703 A CN103904703 A CN 103904703A CN 201210572222 A CN201210572222 A CN 201210572222A CN 103904703 A CN103904703 A CN 103904703A
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- power supply
- charging device
- data pin
- supply capacity
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Abstract
The invention relates to a power supply capacity discrimination method of charging equipment, comprising the following steps: charged equipment is connected with charging equipment through a connection interface; a power supply discrimination controller discriminates whether a positive data pin and a negative data pin of the connection interface are high impedance; if yes, the charging equipment has first power supply capacity; if no, whether the positive and negative data pins are short-circuited is discriminated; if short-circuited, whether the positive and negative data pins are first voltage is discriminated; if the positive and negative data pins are the first voltage, the charging equipment has third power supply capacity; if the positive and negative data pins are not the first voltage, whether the positive and negative data pins are second voltage and third voltage is discriminated; and if the positive and negative data pins are respectively the second voltage and the third voltage, the charging equipment has fourth power supply capacity.
Description
Technical field
The invention relates to a kind of charging device power supply capacity method of discrimination, especially via the voltage swing of correction data pin and negative data pin to obtain the large electric current power supply capacity of charging device.
Background technology
Because portable electronic product is day by day universal, and power supply is generally to use built-in battery, comprises primary cell and secondary cell, especially under the environmental protection agitation of carbon reduction, there is repeatedly the secondary cell that charging cycle is used, such as lithium battery, general gradually.But, be limited to the capacity of battery own, such as the rechargeable battery of mobile phone, user needs often charging to maintain normal operation to supplement electric power, can charge at any time but tend to can not find power supply, causes using very large inconvenience.
In addition, general electronic product is to use USB (Universal Serial Bus, USB) to be used as charging inlet, and the supply power voltage of USB is 5V, and maximum can only have 500mA for induced current.
But, the shortcoming of prior art is that charging current more hour, the required charging interval is just longer, otherwise charging current is higher, the charging interval is just shorter, and the 500mA maximum current of USB is quite low for general electronic products, so in charging interval that conventionally need to be very long, such as one day or a couple of days, cause the inconvenience in use.But be limited to existing standard, even if charging device itself has larger electric current deliverability, also cannot provide the information of large electric current power supply capacity to be sent to by charging device by having.
Therefore, need a kind of charging device power supply capacity method of discrimination, utilize the correction data pin of connecting interface and the voltage swing of negative data pin and obtain the power supply capacity of charging device, being especially greater than the power supply capacity of 500mA, and then solving the problem of above-mentioned prior art.
Summary of the invention
Main purpose of the present invention is to provide a kind of charging device power supply capacity method of discrimination, comprising: be connected to charging device via connecting interface by charging device; After the default stand-by period, whether correction data pin and the negative data pin of being differentiated connecting interface by power supply judgment controller are high impedance; If high impedance has the first power supply capacity; Whether if not high impedance, differentiating correction data pin and negative data pin is short circuit; If short circuit has the second power supply capacity; Whether if not short circuit, differentiating correction data pin and negative data pin is the first voltage; If the first voltage has the 3rd power supply capacity; If not the first voltage, differentiate correction data pin and whether negative data pin is respectively second voltage and tertiary voltage; And if be respectively second voltage and tertiary voltage, there is the 4th power supply capacity.
Therefore, the present invention can be according to the voltage swing of correction data pin and negative data pin, and determines the power supply capacity of charging device, and the large electric current that exceedes 500mA especially can be provided.
Accompanying drawing explanation
Fig. 1 is the operating process schematic diagram that shows charging device power supply capacity method of discrimination of the present invention;
Fig. 2 is the system schematic that shows charging device power supply capacity method of discrimination of the present invention.
Embodiment
Below coordinate graphic and component symbol to do more detailed description to embodiments of the present invention, so that those of ordinary skill in the art are studying carefully after this specification and can implement according to this.
With reference to figure 1, it is the operating process schematic diagram of charging device power supply capacity method of discrimination of the present invention.As shown in Figure 1, charging device power supply capacity method of discrimination of the present invention comprises step S10 to S51, be primarily characterized in that while being connected charging device by charging device, can initiatively be differentiated the power supply capacity of charging device by charging device, and for further illustrating feature of the present invention, please coordinate Fig. 2, be the power system schematic of method of discrimination of the present invention.
First with reference to figure 2, mat connecting interface 3 and connecting by charging device 1 and charging device (not shown), wherein can be comprised mobile phone, panel computer, notebook computer, portable digital-video player, rechargeable battery, electric saver, electric toothbrush, the electric massager with above-mentioned connecting interface 3 by charging device 1, and charging device can comprise battery pack, direct current output transformer, the large capacity stand-by power supply of connecting interface 3.In addition, connecting interface 3 at least comprises power pin VCC, correction data pin D+, negative data pin D-and ground connection pin GND, and preferably, connecting interface 3 can be USB (Universal Serial Bus, USB) or other universal serial bus.
Further, can at least be comprised interface controller 10 by charging device 1, power supply judgment controller 20 and function control device 30, wherein interface controller 10 and power supply judgment controller 20 are electrically connected to connecting interface 3, and interface controller 10 is in order to transmit data through interface controller 10 to charging device and to receive the data from charging device, such as being used as USB device end controller (Device Controller), and power supply judgment controller 20 is to differentiate the power supply capacity of charging device, and differentiation result is sent to interface controller 10, and function control device 30 is to be electrically connected to interface controller 10, in order to realize specific function, such as the high-speed computation processing capacity of the communication function of communication chip in mobile phone or the central processing unit of panel computer.Get back to Fig. 1, charging device power supply capacity method of discrimination of the present invention is to be started by step S10, is connected to charging device by charging device 1 via connecting interface 3.Afterwards, enter step S10, after the default stand-by period, by powering, judgment controller 20 is differentiated correction data pin D+ and whether negative data pin D-is high impedance, if high impedance enters step S21, determine that charging device has the first power supply capacity, and if not high impedance, enter step S30.
In step S30, after the default stand-by period, by powering, judgment controller 20 is differentiated correction data pin D+ and whether negative data pin D-is short circuit, if short circuit enters step S31, determine that charging device has the second power supply capacity, and if not short circuit, enter step S40.
In step S40, after the default stand-by period, by powering, judgment controller 20 is differentiated correction data pin D+ and whether negative data pin D-is all the first voltage, if the first voltage, enter step S41, determine that charging device has the 3rd power supply capacity, and if not the first voltage, enter step S50.
In step S50, after the default stand-by period, by powering, judgment controller 20 is differentiated correction data pin D+ and whether negative data pin D-is respectively second voltage and tertiary voltage, if so, enters step S51, determines that charging device has the 4th power supply capacity.
Particularly, the first power supply capacity can be the following electric current of supply 0.5A, the second power supply capacity can be supply 0.5A to 1.0A electric current, the 3rd power supply capacity can be supply 1.0A to 1.5A electric current, and the 4th power supply capacity can be supply 1.5A above electric current, or the 3rd power supply capacity and the 4th power supply capacity can be and supply 1.5A above electric current.In addition, above-mentioned the first voltage can be 1.0V to 1.5V, and this second voltage can be 2.5V to 3.0V, and this tertiary voltage can be 1.8V to 2.4V.
The electronic circuit that above-mentioned interface controller 10, power supply judgment controller 20 and function control device 30 can be microprocessor, central processing unit or be made up of multiple discrete electronic building bricks, or it is whole by charging device 1 to utilize microprocessor, central processing unit or discrete electronic circuit to realize.
In sum, feature of the present invention be by charging device can mat correction data pin D+ and the voltage swing of negative data pin D-to differentiate and to determine the power supply capacity of charging device.Therefore, method of the present invention can be applicable to have the electronic installation of specific currents demand, such as mobile phone, panel computer, notebook computer, portable digital-video player, can whether meet requiredly in order to differentiate the power supply capacity of charging device, use and improve entirety charging and power consumption efficiency.
The foregoing is only to explain preferred embodiment of the present invention, not attempt is done any pro forma restriction to the present invention according to this.Therefore, all have under identical invention spirit, do relevant any modification of the present invention or change, all must be included in the category that the invention is intended to protection.
Claims (6)
1. a charging device power supply capacity method of discrimination, differentiate the power supply capacity of this charging device when being connected a charging device one by charging device, and this charging device and this are mat one connecting interfaces and connecting by charging device, and this connecting interface at least comprises a power pin, one correction data pin, one negative data pin and a ground connection pin, and this charging device at least comprises an interface controller, one power supply judgment controller and a function control device, wherein this interface controller and this power supply judgment controller are to be electrically connected to this connecting interface, and this interface controller is in order to transmit data through this interface controller to this charging device and to receive the data from this charging device, and this power supply judgment controller is to differentiate the power supply capacity of this charging device, and differentiation result is sent to this interface controller, and this function control device is to be electrically connected to this interface controller, it is characterized in that, this power supply method of discrimination comprises:
This is connected to this charging device by charging device via this connecting interface;
After a default stand-by period, differentiate this correction data pin and whether this negative data pin is high impedance by this power supply judgment controller;
If this correction data pin and this negative data pin are high impedances, determine that this charging device has one first power supply capacity;
If this correction data pin and this negative data pin are not high impedances, after this default stand-by period, differentiate this correction data pin and whether this negative data pin is short circuit by this power supply judgment controller;
If this correction data pin and this negative data pin are short circuits, determine that this charging device has one second power supply capacity;
If this correction data pin and this negative data pin are not short circuits, after this default stand-by period, differentiate this correction data pin and whether this negative data pin is the first voltage by this power supply judgment controller;
If this correction data pin and this negative data pin are the first voltage, determine that this charging device has one the 3rd power supply capacity;
If this correction data pin and this negative data pin are not the first voltage, after this default stand-by period, differentiate this correction data pin and whether this negative data pin is respectively second voltage and tertiary voltage by this power supply judgment controller; And
If this correction data pin and this negative data pin are respectively second voltage and tertiary voltage, determine that this charging device has one the 4th power supply capacity.
2. charging device power supply capacity method of discrimination as claimed in claim 1, is characterized in that, this connecting interface is USB (Universal Serial Bus, USB).
3. charging device power supply capacity method of discrimination as claimed in claim 1, is characterized in that, this default stand-by period is between 1 nanosecond to 100 microsecond.
4. charging device power supply capacity method of discrimination as claimed in claim 1, is characterized in that, this by charging device for microprocessor, central processing unit or by multiple discrete electronic circuits that electronic building brick formed.
5. charging device power supply capacity method of discrimination as claimed in claim 1, it is characterized in that, this interface controller, this power supply judgment controller and this function control device are by microprocessor, central processing unit or the electronic circuit that is made up of multiple discrete electronic building bricks and realize.
6. charging device power supply capacity method of discrimination as claimed in claim 1, is characterized in that, this first voltage is 1.0V to 1.5V, and this second voltage is 2.5V to 3.0V, and this tertiary voltage is 1.8V to 2.4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572222.1A CN103904703B (en) | 2012-12-26 | 2012-12-26 | Charging device power supply capacity method of discrimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572222.1A CN103904703B (en) | 2012-12-26 | 2012-12-26 | Charging device power supply capacity method of discrimination |
Publications (2)
| Publication Number | Publication Date |
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| CN103904703A true CN103904703A (en) | 2014-07-02 |
| CN103904703B CN103904703B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210572222.1A Expired - Fee Related CN103904703B (en) | 2012-12-26 | 2012-12-26 | Charging device power supply capacity method of discrimination |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861729A (en) * | 1992-11-25 | 1999-01-19 | Fujitsu Limited | Charger for portable terminal equipment having on-hook/off-hook detecting means and battery identifying means |
| CN1222263A (en) * | 1996-06-11 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
| TW200644376A (en) * | 2005-06-01 | 2006-12-16 | Asustek Comp Inc | Method and charging apparatus controlled by computer for converting input power into required charging voltage and charging current |
| CN1925257A (en) * | 2005-08-31 | 2007-03-07 | 索尼株式会社 | Dedicated power supply apparatus, terminal. power supply system, and power supply method |
| CN101026309A (en) * | 2006-02-16 | 2007-08-29 | 舒米特微电子公司 | Switching battery charging systems and methods |
-
2012
- 2012-12-26 CN CN201210572222.1A patent/CN103904703B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861729A (en) * | 1992-11-25 | 1999-01-19 | Fujitsu Limited | Charger for portable terminal equipment having on-hook/off-hook detecting means and battery identifying means |
| CN1222263A (en) * | 1996-06-11 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
| TW200644376A (en) * | 2005-06-01 | 2006-12-16 | Asustek Comp Inc | Method and charging apparatus controlled by computer for converting input power into required charging voltage and charging current |
| CN1925257A (en) * | 2005-08-31 | 2007-03-07 | 索尼株式会社 | Dedicated power supply apparatus, terminal. power supply system, and power supply method |
| CN101026309A (en) * | 2006-02-16 | 2007-08-29 | 舒米特微电子公司 | Switching battery charging systems and methods |
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| Publication number | Publication date |
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| CN103904703B (en) | 2016-03-02 |
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Granted publication date: 20160302 Termination date: 20211226 |