CN204667091U - A kind of intelligent power based on USB power supply interface - Google Patents

A kind of intelligent power based on USB power supply interface Download PDF

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Publication number
CN204667091U
CN204667091U CN201520258703.4U CN201520258703U CN204667091U CN 204667091 U CN204667091 U CN 204667091U CN 201520258703 U CN201520258703 U CN 201520258703U CN 204667091 U CN204667091 U CN 204667091U
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power supply
supply interface
usb
control module
data line
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张峰
姚茂楠
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Jiangsu Zimi Electronic Technology Co Ltd
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Jiangsu Zimi Electronic Technology Co Ltd
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Abstract

The utility model relates to a kind of intelligent power based on USB power supply interface, comprises accumulate carrier, control module, power control module, USB power supply interface and power control switch; USB power supply interface comprises positive pole feeder ear, negative pole feeder ear, data line anode, data line negative terminal and voltage comparator, power control module is connected with the positive pole feeder ear of control module, accumulate carrier, USB power supply interface respectively, accumulate carrier is connected with control module simultaneously, negative pole feeder ear ground connection after power control switch of USB power supply interface; The data line anode of USB power supply interface is connected with voltage comparator respectively with data line negative terminal, and voltage comparator is connected with control module simultaneously; The utility model design, based on the intelligent power of USB power supply interface, detects for the carrying out of data line anode and data line negative terminal on USB power supply interface, accurately can judge whether power supply USB power supply interface exists load.

Description

A kind of intelligent power based on USB power supply interface
Technical field
The utility model relates to oneplant the intelligent power based on USB power supply interface, belong to intelligent power supply equipment technical field.
Background technology
Power supply is for store electrical energy, for miscellaneous equipment, device carries out the device of powering, along with the progress of society, electronics technology level improves constantly, especially mobile electronic device develops rapidly especially, electronic equipment miscellaneous meets the growing cultural life demand of people and material life demand, along with the frequent use of electronic equipment, the related device of electronic equipment also becomes more and more important, what stand in the breach is exactly power supply for power electronic equipment, and along with the development of electronic equipment, in order to meet the power demands of more polyelectron equipment, especially for the power supply of mobile electronic device, increasing mobile electronic device adopts USB interface to power, wherein, power-supply device is that the load connected on this USB power supply interface is powered by the feeder ear in USB power supply interface, and existing portable power source can not only realize power supply by general USB power supply interface, and can by detecting on its USB power supply interface whether there is supply current, whether the USB power supply interface realizing judging portable power source connects load, but existingly thisly judge whether that connecting the method for load still also exists limitation, due to existing various load electric current between difference very large, and the existing accuracy of detection for electric current, like prior art be difficult to detect the electric current close to 0, like this, become inaccurate with regard to making the detection for whether power supply USB power supply interface connecting load, high precision cannot be obtained, testing result accurately, wherein, because the property difference of load is larger, if load is connected on power supply USB power supply interface, but not from power taking power supply within a period of time, then can cause the erroneous judgement of power supply, and for the detection progress of electric current, to very little electric current be detected, not only need to pay very high cost, and impedance can be increased on current path, the corresponding loss that will increase power supply energy conveying.
Utility model content
For above-mentioned technical matters, technical problem to be solved in the utility model is to provide a kind of intelligent power based on USB power supply interface, improve for the existing power supply based on USB power supply interface, the detection for data line anode and data line negative terminal on USB power supply interface is introduced in design, accurately can judge whether power supply USB power supply interface exists load.
The utility model is in order to solve the problems of the technologies described above by the following technical solutions: the utility model devises a kind of intelligent power based on USB power supply interface, comprises accumulate carrier, control module, power control module, USB power supply interface and power control switch; Wherein, USB power supply interface comprises positive pole feeder ear, negative pole feeder ear, data line anode and data line negative terminal, power control module is connected with the positive pole feeder ear of control module, accumulate carrier, USB power supply interface respectively, accumulate carrier is connected with control module simultaneously, the earth terminal ground connection of control module, negative pole feeder ear ground connection after power control switch of USB power supply interface; Also comprise voltage comparator, the data line anode of USB power supply interface is connected with voltage comparator respectively with data line negative terminal, and voltage comparator is connected with control module simultaneously.
As a kind of optimal technical scheme of the present utility model: described power control switch is electric-controlled switch, and described control module is connected with electric-controlled switch
As a kind of optimal technical scheme of the present utility model: also comprise power supply Voltage stabilizing module, described accumulate carrier is connected with described control module through power supply Voltage stabilizing module.
As a kind of optimal technical scheme of the present utility model: also comprise resistance, the negative pole feeder ear ground connection after electric-controlled switch, resistance successively of described USB power supply interface.
As a kind of optimal technical scheme of the present utility model: described control module is microcontroller.
A kind of intelligent power based on USB power supply interface described in the utility model adopts above technical scheme compared with prior art, has following technique effect:
(1) intelligent power based on USB power supply interface of the utility model design, improve for the existing power supply based on USB power supply interface, the detection for data line anode and data line negative terminal on USB power supply interface is introduced in design, not only detection reaction speed is fast for this mode, and the signal stabilization of data line anode and data line negative terminal on USB power supply interface, do not need to install wave filter additional for detection signal, signal amplifier and impedance, like this, not only effectively control the manufacturing cost of whole design intelligent power, and can be accurate, easily judge whether power supply USB power supply interface exists load, decrease the energy transfer losses of Power supply,
(2) in the intelligent power based on USB power supply interface that the utility model designs, also for power control switch, design adopts electric-controlled switch, and design con-trol module is connected with electric-controlled switch, make after accurately detection judges that power supply USB power supply interface does not exist load, the external power supply of intelligent power can be cut off in time, on one's own initiative, effectively prevent the loss of electric energy, ensure the serviceable life of design intelligent power;
(3) in the intelligent power based on USB power supply interface that the utility model designs, for described control module, also design adopts Voltage stabilizing module of powering further, effectively can ensure the stability of powering for control module; Moreover, for the negative pole feeder ear of USB power supply interface, resistance is introduced in design, in the course of work of design intelligent power, can effectively realize the available protecting for hardware.
Accompanying drawing explanation
Fig. 1 designs the module diagram of the intelligent power based on USB power supply interface for the utility model.
Embodiment
Be described in further detail for embodiment of the present utility model below in conjunction with Figure of description.
As shown in Figure 1, a kind of intelligent power based on USB power supply interface of the utility model design, comprises accumulate carrier, control module, power control module (POWER IC), USB power supply interface and power control switch, wherein, USB power supply interface comprises positive pole feeder ear, negative pole feeder ear, data line anode (USB D+) and data line negative terminal (USB D-), power control module (POWER IC) is connected with the positive pole feeder ear of control module, accumulate carrier, USB power supply interface respectively, accumulate carrier is connected with control module simultaneously, the earth terminal ground connection of control module, negative pole feeder ear ground connection after power control switch of USB power supply interface, also comprise voltage comparator, the data line anode (USB D+) of USB power supply interface is connected with voltage comparator respectively with data line negative terminal (USB D-), and voltage comparator is connected with control module simultaneously, technique scheme design is based on the intelligent power of USB power supply interface, improve for the existing power supply based on USB power supply interface, the detection for data line anode on USB power supply interface (USB D+) and data line negative terminal (USB D-) is introduced in design, not only detection reaction speed is fast for this mode, and the signal stabilization of data line anode (USB D+) and data line negative terminal (USB D-) on USB power supply interface, do not need to install wave filter additional for detection signal, signal amplifier and impedance, like this, not only effectively control the manufacturing cost of whole design intelligent power, and can be accurate, easily judge whether power supply USB power supply interface exists load, decrease the energy transfer losses of Power supply.
On the basis of above-mentioned design based on the intelligent power technical scheme of USB power supply interface, the utility model also devises following optimal technical scheme further: for described power control switch, design adopts electric-controlled switch, described control module is connected with electric-controlled switch, make after accurately detection judges that power supply USB power supply interface does not exist load, the external power supply of intelligent power can be cut off in time, on one's own initiative, effectively prevent the loss of electric energy, ensure the serviceable life of design intelligent power; But also comprising power supply Voltage stabilizing module, described accumulate carrier is connected with described control module through power supply Voltage stabilizing module, and the design of power supply Voltage stabilizing module is introduced, and effectively can ensure the stability of powering for control module; Moreover, also comprise resistance, the negative pole feeder ear ground connection after electric-controlled switch, resistance successively of described USB power supply interface; The above-mentioned negative pole feeder ear for USB power supply interface, resistance is introduced in design, in the course of work of design intelligent power, can effectively realize the available protecting for hardware; In practical application, for above-mentioned whole technical scheme, control module wherein, design adopts microcontroller (MCU).
A kind of intelligent power based on USB power supply interface of the utility model design, in the middle of actual application, comprises accumulate carrier, microcontroller (MCU), power control module (POWER IC), USB power supply interface, electric-controlled switch, voltage comparator, power supply Voltage stabilizing module and resistance, wherein, USB power supply interface comprises positive pole feeder ear, negative pole feeder ear, data line anode (USB D+) and data line negative terminal (USB D-), power control module (POWER IC) is connected with the positive pole feeder ear of microcontroller (MCU), accumulate carrier, USB power supply interface respectively, accumulate carrier is connected with microcontroller (MCU) through power supply Voltage stabilizing module simultaneously, the earth terminal ground connection of microcontroller (MCU), the negative pole feeder ear ground connection after electric-controlled switch, resistance successively of USB power supply interface, the data line anode (USB D+) of USB power supply interface is connected with voltage comparator respectively with data line negative terminal (USB D-), and voltage comparator is connected with microcontroller (MCU) simultaneously, and microcontroller (MCU) is connected with electric-controlled switch, in the middle of actual application, accumulate carrier is powered to microcontroller (MCU) through power supply Voltage stabilizing module, microcontroller (MCU) controls for electric-controlled switch, determine the accumulate carrier positive pole feeder ear whether in power control module (POWER IC) and USB power supply interface, negative pole feeder ear powers to the load, wherein, microcontroller (MCU) carries out power supply parameter control for power control module (POWER IC), when the positive pole feeder ear of accumulate carrier in power control module (POWER IC) and USB power supply interface, when negative pole feeder ear powers to the load, the positive pole feeder ear of accumulate carrier under the power supply parameter of power control module (POWER IC) controls in USB power supply interface, negative pole feeder ear powers to the load, due to based on existing BC1.2 agreement, load can load upper electric current on the data line anode (USB D+) and data line negative terminal (USB D-) of its USB charging inlet, when the USB charging inlet of load is connected with the USB power supply interface of design intelligent power, data line anode (USB D+) in load USB charging inlet is connected with the data line anode (USB D+) in intelligent power USB power supply interface is corresponding with data line negative terminal (USB D-) with data line negative terminal (USB D-), now, voltage comparator in intelligent power correspondingly will detect in intelligent power USB power supply interface to there is voltage difference between data line anode (USB D+) and data line negative terminal (USB D-), then voltage comparator will detect that the signal that there is voltage difference sends to the microcontroller (MCU) be attached thereto, microcontroller (MCU) judges intelligent power USB power supply interface is connected to load thus, the electric-controlled switch that microcontroller (MCU) controls to be attached thereto immediately closes, be communicated with the accumulate carrier current supply circuit through power control module (POWER IC) and USB power supply interface, realization powers to the load, otherwise, when not having load to be connected on the USB power supply interface of design intelligent power, voltage comparator in intelligent power detects in intelligent power USB power supply interface to there is not voltage difference between data line anode (USB D+) and data line negative terminal (USB D-), then voltage comparator will detect that the signal that there is not voltage difference sends to the microcontroller (MCU) be attached thereto, microcontroller (MCU) judges intelligent power USB power supply interface does not connect load thus, the electric-controlled switch that microcontroller (MCU) controls to be attached thereto immediately disconnects, disconnect the accumulate carrier current supply circuit through power control module (POWER IC) and USB power supply interface, stop accumulate carrier through the supplying power for outside of USB power supply interface.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.

Claims (5)

1., based on an intelligent power for USB power supply interface, comprise accumulate carrier, control module, power control module, USB power supply interface and power control switch; Wherein, USB power supply interface comprises positive pole feeder ear, negative pole feeder ear, data line anode and data line negative terminal, power control module is connected with the positive pole feeder ear of control module, accumulate carrier, USB power supply interface respectively, accumulate carrier is connected with control module simultaneously, the earth terminal ground connection of control module, negative pole feeder ear ground connection after power control switch of USB power supply interface; It is characterized in that: also comprise voltage comparator, the data line anode of USB power supply interface is connected with voltage comparator respectively with data line negative terminal, and voltage comparator is connected with control module simultaneously.
2. a kind of intelligent power based on USB power supply interface according to claim 1, is characterized in that: described power control switch is electric-controlled switch, and described control module is connected with electric-controlled switch.
3. a kind of intelligent power based on USB power supply interface according to claim 2, is characterized in that: also comprise power supply Voltage stabilizing module, and described accumulate carrier is connected with described control module through power supply Voltage stabilizing module.
4. a kind of intelligent power based on USB power supply interface according to claim 2, is characterized in that: also comprise resistance, the negative pole feeder ear ground connection after electric-controlled switch, resistance successively of described USB power supply interface.
5. a kind of intelligent power based on USB power supply interface according to Claims 1-4 any one, is characterized in that: described control module is microcontroller.
CN201520258703.4U 2015-04-27 2015-04-27 A kind of intelligent power based on USB power supply interface Active CN204667091U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104820387A (en) * 2015-04-27 2015-08-05 江苏紫米电子技术有限公司 USB power supply interface-based intelligent power source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104820387A (en) * 2015-04-27 2015-08-05 江苏紫米电子技术有限公司 USB power supply interface-based intelligent power source

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