CN206195433U - USB charging device and power adapter - Google Patents
USB charging device and power adapter Download PDFInfo
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- CN206195433U CN206195433U CN201621258432.3U CN201621258432U CN206195433U CN 206195433 U CN206195433 U CN 206195433U CN 201621258432 U CN201621258432 U CN 201621258432U CN 206195433 U CN206195433 U CN 206195433U
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Abstract
The utility model discloses a USB charging device and power adapter, wherein, this USB charging device includes: rectification filter circuit, control circuit, reduction voltage circuit, USB interface, overvoltage crowbar and intelligent recognition circuit, rectification filter circuit supplies external commercial power and converts the commercial power to DC voltage, control circuit is connected with rectification filter circuit electricity, the reduction voltage circuit is connected with the control circuit electricity, the USB interface is connected with the reduction voltage circuit electricity, supplies output charging voltage, overvoltage crowbar is connected with the control circuit electricity, supplies to detect charging voltage and export control circuit to to make control circuit stop direct current voltage conversion, intelligent recognition circuit and USB electrical connection interface supply to detect the cell -phone voltage that inserts the USB interface to provide the cell -phone quick charge required identification signal for the USB interface. The technical scheme of the utility model can shorten charge time, improve charge efficiency, can carry out overvoltage protection to charging device simultaneously.
Description
Technical field
The utility model is related to charging equipment, more particularly to a kind of USB charging devices and power supply adaptor.
Background technology
At present, it is electric on the market with the popularization and the increase of smart mobile phone species of smart mobile phone and mobile electronic device
The species of source adapter is also more and more.Because power supply adaptor needs to connect civil power, often used when going out and travelling and filled
Electric portable equipment replaces power supply adaptor, further, since the charging inlet of part mobile phone is general, user may be using difference
Adapter give different mobile phones charge.
Because the adaptor charge interface of smart mobile phone is all charged using four-wire system data line, respectively+5V,
D-, D+, GND.And present mobile phone brand and model is various, and each mobile phone producer all sets distinctive identification to charging adapter
Signal, non-original-pack charger can not give its quick charge, cause the charging interval long, the slow problem of charge efficiency, in addition, work as filling
Piezoelectric voltage is higher than normal value, can damage the rechargeable battery of device, shortens the service life of product.
Utility model content
To solve an at least above-mentioned technical problem, main purpose of the present utility model is to provide a kind of USB charging devices.
To achieve the above object, the technical scheme that the utility model is used for：A kind of USB charging devices are provided, are wrapped
Include：
Current rectifying and wave filtering circuit, the current rectifying and wave filtering circuit is converted into DC voltage for external civil power and by civil power；
Control circuit, the control circuit is electrically connected with current rectifying and wave filtering circuit, to control the output of DC voltage；
Reduction voltage circuit, the reduction voltage circuit is electrically connected with control circuit, for carrying out step-down treatment to DC voltage；
USB interface, the USB interface is electrically connected with reduction voltage circuit, for output charging voltage；
Overvoltage crowbar, the overvoltage crowbar is electrically connected with control circuit, for detecting charging voltage and exporting extremely
Control circuit, so that control circuit stops DC voltage conversion；
Intelligent identifying circuit, the intelligent identifying circuit is electrically connected with USB interface, and the mobile phone of USB interface is accessed for detection
Voltage, and the identification signal for needed for USB interface provides mobile phone quick charge.
Preferably, the intelligent identifying circuit includes supplying resistance and Intelligent Recognition chip,
3rd pin of the Intelligent Recognition chip is electrically connected with supplying resistance, the 4th pin of Intelligent Recognition chip and
Five pins are electrically connected with two detection pins of USB interface respectively.
Preferably, the overvoltage crowbar includes voltage-regulator diode, optocoupler and the first triode；The voltage-regulator diode
Anode electrically connected with the input of optocoupler, the output end of the optocoupler is electrically connected with the base stage of the first triode, described first
The colelctor electrode of triode is electrically connected with control circuit, the grounded emitter of the first triode.
Preferably, the overvoltage crowbar also includes the 6th resistance, the 7th resistance, the 8th resistance and the 9th resistance, institute
The feeder ear for stating optocoupler connects preset voltage by the 6th resistance, and the output end of optocoupler connects the base of the first triode by the 8th resistance
Pole, the one of the 7th resistance terminates the common junction that the 8th resistance is connected with optocoupler, other end ground connection；The collection of first triode
Electrode passes through the 9th resistance connection control circuit.
Preferably, the intelligent identifying circuit also include filter capacitor, the filter capacitor one termination supplying resistance with
The common junction of the pin of Intelligent Recognition chip the 3rd connection, other end ground connection.
Preferably, the filter capacitor is one and the two or more electric capacity for connecing.
Preferably, the supplying resistance is one, two or more resistance of concatenation.
Preferably, the USB device also includes absorbing circuit, and the absorbing circuit is electrically connected with control circuit.
To achieve the above object, another technical scheme that the utility model is used for：A kind of power supply adaptor, institute are provided
Stating power supply adaptor includes above-mentioned USB charging devices, current rectifying and wave filtering circuit, and the current rectifying and wave filtering circuit supplies external civil power and incites somebody to action
Civil power is converted into DC voltage；
Control circuit, the control circuit is electrically connected with current rectifying and wave filtering circuit, to control the output of DC voltage；
Reduction voltage circuit, the reduction voltage circuit is electrically connected with control circuit, for carrying out step-down treatment to DC voltage；
USB interface, the USB interface is electrically connected with reduction voltage circuit, for output charging voltage；
Overvoltage crowbar, the overvoltage crowbar is electrically connected with control circuit, for detecting charging voltage and exporting extremely
Control circuit, so that control circuit stops DC voltage conversion；
Intelligent identifying circuit, the intelligent identifying circuit is electrically connected with USB interface, and the mobile phone of USB interface is accessed for detection
Voltage, and the identification signal for needed for USB interface provides mobile phone quick charge.
The technical solution of the utility model mainly includes intelligent identifying circuit and overvoltage crowbar, the intelligent identifying circuit
The type of cell phone of mobile phone to be charged can be detected by USB interface and recognize, after recognizing successfully, can be fast for mobile phone to be charged
Speed charge, in this way, can solution charger original-pack by no means can not give its quick charge, cause the charging interval long, charge efficiency is slow
Problem；The overvoltage crowbar carries out overvoltage protection when charging voltage exceeds setting value, control circuit is stopped step-down electricity
Continue to change voltage in road, it is ensured that output voltage makes charging voltage be under 5.6V no more than 5.6V, can effectively prevent from charging
Overtension damages the problem of battery.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the module diagram of the embodiment USB charging devices of the utility model one；
Fig. 2 is the integrated circuit structural representation of Fig. 1；
Fig. 3 is the electrical block diagram of the intelligent identifying circuit of Fig. 2；
The electrical block diagram of the overvoltage crowbar of Fig. 4 bitmaps 2.
The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
It is to be appreciated that being related to the description of " first ", " second " etc. to be only used for describing purpose in the utility model, and can not manage
Solve to indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, the skill between each embodiment
Art scheme can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when technical scheme
With reference to occur it is conflicting or when cannot realize it will be understood that the combination of this technical scheme does not exist, also not in the utility model
It is required that protection domain within.
It is the powering portable devices such as mobile phone, PAD that USB Intelligent Recognitions charging device of the present utility model is applied to.
Fig. 1 is refer to, in the utility model embodiment, the USB charging devices, including：
Current rectifying and wave filtering circuit 11, the current rectifying and wave filtering circuit 11 is converted into DC voltage for external civil power and by civil power；
Control circuit 12, the control circuit 12 is electrically connected with current rectifying and wave filtering circuit 11, to control the output of DC voltage；
Reduction voltage circuit 13, the reduction voltage circuit 13 is electrically connected with control circuit 12, for carrying out step-down treatment to DC voltage；
USB interface 30, the USB interface 30 is electrically connected with reduction voltage circuit 13, for output charging voltage；
Overvoltage crowbar 15, the overvoltage crowbar 15 is electrically connected with control circuit 12, for detection charging voltage simultaneously
Output is to control circuit 12, so that control circuit 12 stops DC voltage conversion；
Intelligent identifying circuit 30, the intelligent identifying circuit 30 is electrically connected with USB interface 30, and USB interface is accessed for detection
30 mobile phone voltage, and the identification signal for needed for USB interface 30 provides mobile phone quick charge.
In the present embodiment, by current rectifying and wave filtering circuit 11, control circuit 12, reduction voltage circuit 13, USB interface 30 can be with external
Civil power, the treatment such as rectification, filtering, control and step-down are carried out to civil power, and for mobile phone to be charged is powered.Further, should
USB interface 30 serves as the charging inlet of mobile phone or portable equipment, and USB interface 30 is provided with detection pin, intelligent identifying circuit 30,
The mobile phone voltage of USB interface 30, and the identification signal for needed for USB interface 30 provides mobile phone quick charge are accessed for detection, such as
This, after recognizing successfully, can be mobile phone quick charge to be charged；Add, the real-time detection of overvoltage crowbar 15 charges electric
Pressure, when charging voltage is higher than 5.6V, plays a part of overvoltage protection control circuits, control circuit is stopped conversion voltage, protects
Card output voltage is conducive to protecting rechargeable battery no more than 5.6V.Preferably, control circuit 12 is also associated with absorbing circuit
14, reflected voltage when preventing control circuit 14 from disconnecting by absorbing circuit, it is to avoid damage control circuit, play a protective role.
The technical solution of the utility model mainly includes intelligent identifying circuit 30 and overvoltage crowbar 15, the Intelligent Recognition
Circuit 30 can be detected by USB interface 30 and recognize the type of cell phone of mobile phone to be charged, can be to wait to fill after recognizing successfully
Electric hand machine quick charge, in this way, can solution charger original-pack by no means can not give its quick charge, cause the charging interval long, fill
The slow problem of electrical efficiency；The overvoltage crowbar 15 carries out overvoltage protection when charging voltage exceeds setting value, makes control circuit
12 stop continuing to change voltage, it is ensured that output voltage makes charging voltage be under 5.6V no more than 5.6V, can effectively prevent
The too high problem for damaging battery of charging voltage.
Refer to Fig. 2 and Fig. 3, in a specific embodiment, the intelligent identifying circuit 30 include supplying resistance R11 and
Intelligent Recognition chip U2,
3rd pin of the Intelligent Recognition chip U2 is electrically connected with supplying resistance R11, and the 4th of Intelligent Recognition chip U2 the
Pin and the 5th pin are electrically connected with two detection pins of USB interface 30 respectively.
In the present embodiment, the 3rd pin of Intelligent Recognition chip U2 and supplying resistance R11, with from outgoing introducing 5V voltages,
Start Intelligent Recognition type of cell phone, and the result after identification is sent by the 4th pin and the 5th pin, realize quick
Charge function.The model MA5887 of Intelligent Recognition chip U2.
Refer to 2 and Fig. 4, in a specific embodiment, the overvoltage crowbar 15 include voltage-regulator diode ZD1,
Optocoupler U3 and the first triode Q1；The anode of the voltage-regulator diode ZD1 is electrically connected with the input of optocoupler U3, the optocoupler U3
Output end electrically connected with the base stage of the first triode Q1, the colelctor electrode of the first triode Q1 is electrically connected with control circuit,
The grounded emitter of the first triode Q1.
In the present embodiment, when the voltage of voltage-regulator diode ZD1 exceedes preset value (such as 5.6V), voltage-regulator diode ZD1 bis-
Pole pipe is breakdown, and optocoupler U3 starts working to be provided to the base stage of the first triode Q1 and starts voltage, after the first triode Q1 starts,
Colelctor electrode and emitter stage are turned on, namely control chip U1 is grounded by the first triode Q1 for connecting, equivalent to having dragged down control
The voltage of chip U1, makes control chip U1 stop continuing to change voltage.Wherein, control circuit 12 is main by control chip U1 groups
Into.
Fig. 4 is refer to, in a specific embodiment, the overvoltage crowbar 15 also includes the 6th resistance R6, the 7th
Resistance R7, the 8th resistance R8 and the 9th resistance R9, the feeder ear of the optocoupler U3 connect preset voltage by the 6th resistance R6, optocoupler
The output end of U3 connects the base stage of the first triode Q1, termination the 8th resistance R8 and a light of the 7th resistance R7 by the 8th resistance R8
The common junction of coupling U3 connections, other end ground connection；The colelctor electrode of the first triode Q1 connects control electricity by the 9th resistance R9
Road U2.
In the present embodiment, in order to prevent optocoupler U3, Intelligent Recognition chip U2 and the first triode Q1 to be directly grounded, can be with
The appropriate pass devices of addition, to ensure the normal operation of circuit.
Fig. 2 is refer to, in a specific embodiment, the intelligent identifying circuit 30 is described also including filter capacitor C5
The common junction that the one termination supplying resistance R11 of filter capacitor C5 is connected with the pins of Intelligent Recognition chip U2 the 3rd, another termination
Ground.
In the present embodiment, filter capacitor C5 supplies the radio-frequency component of the supply voltage for filtering Intelligent Recognition chip U2, to protect
Demonstrate,prove its interference-free.Supply voltage is 5V in the present embodiment.
Further, the filter capacitor C5 is one and the two or more electric capacity for connecing.
In the present embodiment, the quantity of filter capacitor C5 can be one, or and connect two, three, specifically
Quantity can be set according to actual requirement.
Further, the supplying resistance R11 is one, two or more resistance of concatenation.
In the present embodiment, the quantity of supplying resistance R11 can be one, or and connect two, three, specifically
Quantity can be set according to actual requirement.
In embodiment of the present utility model, the power supply adaptor, including above-mentioned USB charging devices, concrete structure is as above
Embodiment is stated, here is omitted.Because power supply adaptor employs above-mentioned USB charging devices, therefore, this power supply adaptor
At least there are all advantages of above-mentioned USB charging devices.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become
Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of USB charging devices, it is characterised in that the USB charging devices include：
Current rectifying and wave filtering circuit, the current rectifying and wave filtering circuit is converted into DC voltage for external civil power and by civil power；
Control circuit, the control circuit is electrically connected with current rectifying and wave filtering circuit, to control the output of DC voltage；
Reduction voltage circuit, the reduction voltage circuit is electrically connected with control circuit, for carrying out step-down treatment to DC voltage；
USB interface, the USB interface is electrically connected with reduction voltage circuit, for output charging voltage；
Overvoltage crowbar, the overvoltage crowbar is electrically connected with control circuit, for detection charging voltage and output extremely control
Circuit, so that control circuit stops DC voltage conversion；
Intelligent identifying circuit, the intelligent identifying circuit is electrically connected with USB interface, and the mobile phone voltage of USB interface is accessed for detection,
And the identification signal for needed for USB interface provides mobile phone quick charge.
2. USB charging devices as claimed in claim 1, it is characterised in that the intelligent identifying circuit include supplying resistance and
Intelligent Recognition chip,
3rd pin of the Intelligent Recognition chip is electrically connected with supplying resistance, the 4th pin of Intelligent Recognition chip and the 5th is drawn
Pin is electrically connected with two detection pins of USB interface respectively.
3. USB charging devices as claimed in claim 2, it is characterised in that the overvoltage crowbar include voltage-regulator diode,
Optocoupler and the first triode；The anode of the voltage-regulator diode is electrically connected with the input of optocoupler, the output end of the optocoupler with
The base stage electrical connection of the first triode, the colelctor electrode of first triode is electrically connected with control circuit, the hair of the first triode
Emitter grounding.
4. USB charging devices as claimed in claim 3, it is characterised in that the overvoltage crowbar also include the 6th resistance,
7th resistance, the 8th resistance and the 9th resistance, the feeder ear of the optocoupler connect preset voltage, the output of optocoupler by the 6th resistance
End connects the base stage of the first triode by the 8th resistance, the one of the 7th resistance terminate that the 8th resistance is connected with optocoupler public connect
Point, other end ground connection；The colelctor electrode of first triode passes through the 9th resistance connection control circuit.
5. USB charging devices as claimed in claim 2, it is characterised in that the intelligent identifying circuit also includes filter capacitor,
The common junction that one termination supplying resistance of the filter capacitor is connected with the pin of Intelligent Recognition chip the 3rd, other end ground connection.
6. USB charging devices as claimed in claim 5, it is characterised in that the filter capacitor be one and connect two or
More than two electric capacity.
7. USB charging devices as claimed in claim 5, it is characterised in that the supplying resistance is one, two of concatenation or
More than two resistance.
8. USB charging devices as described in any one of claim 1 to 7, it is characterised in that the USB device also includes absorbing
Circuit, the absorbing circuit is electrically connected with control circuit.
9. a kind of power supply adaptor, it is characterised in that the power supply adaptor is included as described in any one of claim 1 to 8
USB charging devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621258432.3U CN206195433U (en) | 2016-11-22 | 2016-11-22 | USB charging device and power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621258432.3U CN206195433U (en) | 2016-11-22 | 2016-11-22 | USB charging device and power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195433U true CN206195433U (en) | 2017-05-24 |
Family
ID=58723584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621258432.3U Active CN206195433U (en) | 2016-11-22 | 2016-11-22 | USB charging device and power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756398A (en) * | 2020-06-04 | 2020-10-09 | 苏州大学文正学院 | Utilize in experimental facilities intelligent monitoring system's communication circuit |
-
2016
- 2016-11-22 CN CN201621258432.3U patent/CN206195433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756398A (en) * | 2020-06-04 | 2020-10-09 | 苏州大学文正学院 | Utilize in experimental facilities intelligent monitoring system's communication circuit |
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