CN206712482U - USB charging sockets - Google Patents
USB charging sockets Download PDFInfo
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- CN206712482U CN206712482U CN201621163370.8U CN201621163370U CN206712482U CN 206712482 U CN206712482 U CN 206712482U CN 201621163370 U CN201621163370 U CN 201621163370U CN 206712482 U CN206712482 U CN 206712482U
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Abstract
The utility model proposes a kind of USB charging sockets, it includes：Power management module, overvoltage crowbar, current foldback circuit, intelligent identification module and multiple USB interfaces; wherein; the input of the power management module is used to connect civil power input line; the output end of the power management module connects the input, the overvoltage crowbar and the current foldback circuit of the intelligent identification module respectively, and the output end of the intelligent identification module connects the multiple USB interface respectively.Above-mentioned USB charging sockets, the output of USB interface uses more mouthfuls of Parallel Designs, the electric current of each USB interface can be according to the different sizes for carrying out automatic distribution charging current of load, so as to more efficient safer for all types of mobile phones, Ipad and power electronic equipment with USB interface.In addition, inside is additionally provided with overvoltage protection and current foldback circuit, USB charging sockets itself are unaffected in the case of being electrically charged equipment and exception occur, so as to lift reliability.
Description
Technical field
It the utility model is related to power technique fields, more particularly to a kind of USB charging sockets.
Background technology
USB (Universal Serial Bus, abbreviation USB) interface is most common connecting interface now
One of, because USB interface can not only transmit data, moreover it is possible to transmit electric power, therefore, many portable electric appts all use USB
Interface accesses line voltage to be charged to electronic equipment as charge port by corresponding USB.Due to it is different types of just
Requirement difference of the formula electronic equipment for charging current is taken, the charger of current existing portable electric appts is all standard configuration
Movable charger, do not simply fail to share charger with other electronic equipments, and be easily lost.It is in addition, existing removable
Charger generally only has 1 USB interface, the even electronic equipment of same type, and the same time can only also set to an electronics
It is standby to be charged, it is very inconvenient for the user for possessing multiple portable electric appts simultaneously.
Utility model content
In view of this, it is necessary to a kind of USB charging sockets are provided, can the various agreements of automatic identification, according to load
Difference carries out the size of automatic distribution charging current, while is powered for various electronic.
A kind of USB charging sockets, it includes：Power management module, overvoltage crowbar, current foldback circuit, intelligence are known
Other module and multiple USB interfaces, wherein, the input of the power management module is used to connect civil power input line, the power supply
The input, the overvoltage crowbar and the excessively stream that the output end of management module connects the intelligent identification module respectively are protected
Protection circuit, the output end of the intelligent identification module connect the multiple USB interface respectively.
As a kind of embodiment, the intelligent identification module, including：Multiple Intelligent Recognition chips, wherein the multiple
The input of Intelligent Recognition chip connects the output end of the power management module respectively, the multiple Intelligent Recognition chip it is defeated
Go out end and connect the multiple USB interface respectively.
As a kind of embodiment, the intelligent identification module, including resistance R1, resistance R2, electric capacity C1, electric capacity C2,
One Intelligent Recognition chip U1 and the second Intelligent Recognition chip U2, the multiple USB interface includes the first USB interface, the 2nd USB connects
Mouth and the 3rd USB interface, wherein：
The positive input terminal of the first Intelligent Recognition chip U1 passes through the resistance R1 connections power management module
Positive output end, the negative input end of the first Intelligent Recognition chip U1 connects the negative output terminal of the power management module, and leads to
Cross the positive input terminal of electric capacity C1 connections the first Intelligent Recognition chip U1, the first of the first Intelligent Recognition chip U1
Output end connects the first data contacts of first USB interface, and the second output end of the first Intelligent Recognition chip U1 connects
Connect the second data contacts of first USB interface；
The positive input terminal of the second Intelligent Recognition chip U2 passes through the resistance R2 connections power management module
Positive output end, the negative input end of the second Intelligent Recognition chip U2 connects the negative output terminal of the power management module, and leads to
Cross the positive input terminal of electric capacity C2 connections the second Intelligent Recognition chip U2, the first of the second Intelligent Recognition chip U2
Output end connects the first data contacts of the secondary USB interface, and the second output end of the second Intelligent Recognition chip U2 connects
Connect the second data contacts of the secondary USB interface, the 3rd output end connection of the second Intelligent Recognition chip U2 described the
First data contacts of three USB interfaces, the 4th output end of the second Intelligent Recognition chip U2 connect the 3rd USB interface
The second data contacts；
The power supply contact of first USB interface, the secondary USB interface and the 3rd USB interface connects institute respectively
State the positive output end of power management module, the electricity of first USB interface, the secondary USB interface and the 3rd USB interface
The ground contact of source contact respectively is used to be grounded.
As a kind of embodiment, the power management module, including pretreatment circuit, electric power management circuit, the first control
Circuit processed, transformer, circuit of synchronous rectification, wherein the transformer includes the first primary coil, the second primary coil and secondary
Coil, the electric power management circuit include power management chip U3 and feedback circuit；
The input of the pretreatment circuit is used to connect the civil power input line, and the output end of the pretreatment circuit connects
Connect the first primary coil of the transformer；
The PWM output pins of the power management chip U3 connect the of the transformer by the first control circuit
One primary coil, the power supply output pin of the power management chip U3 connect the transformer by the overvoltage crowbar
The second primary coil both ends, the current monitoring pin of the power management chip U3 connects the current foldback circuit, institute
The current monitoring pin for stating power management chip U3 also connects its feedback voltage input pin by the feedback circuit；
The secondary coil of the transformer connects the input of the circuit of synchronous rectification, the circuit of synchronous rectification it is defeated
Go out the input that end connects the intelligent identification module.
As a kind of embodiment, the overvoltage crowbar, including：Resistance R10, resistance R12, electric capacity C3, electric capacity C4
And diode D1, wherein：
The negative electrode of the diode D1 connects the power supply output pin of the power management chip U3, the diode D1's
The feedback voltage input pin that anode passes through the resistance R10 connections power management chip U3；
Described electric capacity C3 one end connects the power supply output pin of the power management chip U3, other end ground connection；
The electric capacity C4 is in parallel with the electric capacity C3；
Described resistance R12 one end connects the PWM output pins of the power management chip U3, and the other end connects the power supply
Managing chip U3 current monitoring pin.
As a kind of embodiment, the current foldback circuit includes：Resistance R7, resistance R8, resistance R13 and electric capacity C5,
Wherein：
One end of the resistance R13 connects the current monitoring pin of the power management chip U3, and the resistance R13's is another
One end is grounded by the resistance R7 and the resistance R8 of parallel connection；
One end of the electric capacity C5 connects the current monitoring pin of the power management chip U3, and the electric capacity C5's is another
End ground connection.
As a kind of embodiment, the first control circuit includes triode Q1, resistance R3, resistance R4, resistance R5, electricity
R6, resistance R11, electric capacity C6 and diode D2 are hindered, wherein：
The grid of the triode Q1 by the PWM output pins of the resistance R11 connections power management chip U3,
The source ground of the triode Q1, the drain electrode of the triode connect the first end of the first primary coil of the transformer,
The drain electrode of the triode also passes through the resistance R3 and the resistance R4 connections diode D2 in parallel anode；
The negative electrode of the diode D2 passes through the electric capacity C6, the resistance R5 that are mutually in parallel and the resistance R6 connections
Second end of the first primary coil of the transformer.
As a kind of embodiment, the feedback circuit includes photo-coupler U2A and electric capacity C7, the electric power management circuit
Also include resistance R9, resistance R14 and diode D3, wherein：
The both ends of the electric capacity C7 connect the first output end and the second output end of the photo-coupler U4A respectively, described
Photo-coupler U4A the first output end connects the feedback voltage input pin of the power management chip U3, the photo-coupler
U4A the second output head grounding；
The reference of the power management chip U3 sets pin connection diode D3 anode, the power management core
Piece U3 reference sets first end of the pin also by the second primary coil of the resistance R9 connections transformer；Described two
Pole pipe D3 negative electrode is grounded by the resistance R14.
As a kind of embodiment, the USB charging sockets also include isolation circuit, and the input of the isolation circuit connects
The output end of the circuit of synchronous rectification is connect, the output end of the isolation circuit connects the input of the intelligent identification module.
As a kind of embodiment, the power management module also includes filter circuit, the input of the filter circuit
The output end of the circuit of synchronous rectification is connected, filters the input for the output end connection intelligent identification module for stating circuit
End.
Above-mentioned USB charging sockets, input are accessed using common 220V electric mains, installation and the common sample prescription of socket one
Just, it is not necessary to wiring in addition.Inside carries charge protocol detection function, can the various agreements of automatic identification, the output of USB interface adopts
With more mouthfuls of Parallel Designs, the electric current of each USB interface can carry out the automatic size for distributing charging current according to load is different,
So as to more efficient safer for all types of mobile phones, Ipad and power electronic equipment with USB interface.In addition, internal also set
There are overvoltage protection and current foldback circuit, USB charging sockets itself are unaffected in the case of being electrically charged equipment and exception occur,
So as to lift reliability.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, can also be according to the accompanying drawing of these accompanying drawings acquisition other embodiment.
Fig. 1 is the structural representation of the USB charging sockets of an embodiment；
Fig. 2 be an embodiment USB charging sockets in intelligent identification module circuit diagram；
Fig. 3 be an embodiment USB charging sockets in power management module structural representation；
Fig. 4 be an embodiment USB charging sockets in power management module, overvoltage crowbar and current foldback circuit
Circuit diagram；
Fig. 5 be an embodiment USB charging sockets in isolation circuit circuit diagram.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for describing purpose, and
It is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define
At least one this feature can be expressed or be implicitly included to the feature of " first ", " second ".In description of the present utility model,
" multiple " are meant that at least two, such as two, three etc., unless otherwise specifically defined.
USB charging sockets according to the utility model embodiment are described below in conjunction with the accompanying drawings.For example, the utility model one is real
Applying the USB charging sockets of example includes power management module, overvoltage crowbar, current foldback circuit, intelligent identification module and more
Individual USB interface, wherein, the input of the power management module is used to connect civil power input line, the power management module
Output end connects the input, the overvoltage crowbar and the current foldback circuit of the intelligent identification module, institute respectively
The output end for stating intelligent identification module connects the multiple USB interface respectively.Protected it should be noted that the utility model is required
Shield be on address following examples USB charging sockets product structure and its annexation, the transmission of specific signal and control
System is realized by electronic component, and the scope of the requires of the utility model protection is not related to the specific transmission and control of signal,
Specific intelligent identification module, power management module, overvoltage crowbar, current foldback circuit, all give below specific
Structure and annexation explanation.
For example, Fig. 1 is the structural representation of the USB charging sockets of an embodiment.As shown in figure 1, the USB charging sockets
10, including power management module 11, overvoltage crowbar 12, current foldback circuit 13, intelligent identification module 14 and multiple USB connect
Mouth 15, wherein, the input of power management module is used to connect civil power input line, and the output end of power management module connects respectively
Input, overvoltage crowbar and the current foldback circuit of intelligent identification module, the output end of intelligent identification module connect respectively
Multiple USB interfaces.
In the present embodiment, power management module 11 is used for the charging voltage that line voltage is converted to electronic equipment, example
220V electric main is such as converted to 5V DC voltage.
As a kind of embodiment, power management module 11 also carries out rectification processing to civil power so that the stabilization of output
DC current.For example, power management module 11 includes transformer and circuit of synchronous rectification, will be through transformation by circuit of synchronous rectification
Electric power signal rectification after device decompression is the output signal of pre-set current value.For example, by transformer and circuit of synchronous rectification, city
Electricity is converted to 5V, 4.2A DC signal.
Wherein, intelligent identification module 14 is used for the loadtype connected according to USB interface, and power management module 11 is exported
Electric signal handled, obtain the charging signals of electronic equipment, electronic equipment charged.Specifically, when USB interface connects
Connect load, i.e., USB interface connection electronic equipment when, signal that intelligent identification module 14 issues according to electronic equipment, identification is negative
Carry type, charge mode determined according to loadtype, and according to charging voltage corresponding to the charge mode to USB interface output and
Charging current, so as to be charged to electronic equipment.
In the utility model embodiment, 14 default charge mode of intelligent identification module comprises at least following three kinds：
First charge mode, corresponding output current is 2.4A, for example, being mainly used in as apple equipment charge.Wherein, it is right
In the apple equipment that power is 5W, intelligent identification module 14 exports to correction data interface D+, the negative data interface D- of USB interface
Voltage is respectively 2.0V, 2.0V.For the apple equipment that power is 10W, intelligent identification module 14 connects to the correction data of USB interface
Mouth D+, the voltage of negative data interface D- outputs are respectively 2.0V, 2.7V.For the apple equipment that power is 12W, Intelligent Recognition mould
The voltage of correction data interface D+, negative data interface D- output of the block 14 to USB interface is respectively 2.7V, 2.7V.
Second charge mode, corresponding output current is 2.1A, for example, being mainly used in as Samsung equipment charge.Wherein, it is right
In the Samsung equipment that power is 10W, intelligent identification module 14 exports to correction data interface D+, the negative data interface D- of USB interface
Voltage be respectively 1.2V, 1.2V.
3rd charge mode, corresponding output current is 1.0A, for example, being mainly used in follow BC1.2 standards or YD/
The electronic equipment charging of T1591-2009 standards, or the Samsung equipment that power is 5W are charged.
In the present embodiment, overvoltage crowbar 12 is used to carry out overvoltage protection to power management module 11.Specifically, when
When the output voltage of power management module 11 exceedes the upper voltage limit value of setting, overvoltage crowbar 12 is to power management module 11
Over-pressed signal is fed back, so that power management module 11 is stopped to close output.
Current foldback circuit 13 is used to power management module 11 is carried out to overload/overcurrent protection.Specifically, power management is worked as
When the output current of module 11 exceedes the current upper limit value of setting, current foldback circuit 13 feeds back excessively stream to power management module 11
Signal, so that power management module 11 is stopped to close output.
Above-mentioned USB charging sockets, input are accessed using common 220V electric mains, installation and the common sample prescription of socket one
Just, it is not necessary to wiring in addition.Inside carries charge protocol detection function, can the various agreements of automatic identification, the output of USB interface adopts
With more mouthfuls of Parallel Designs, the electric current of each USB interface can carry out the automatic size for distributing charging current according to load is different,
So as to more efficient safer for all types of mobile phones, Ipad and power electronic equipment with USB interface.In addition, internal also set
There are overvoltage protection and current foldback circuit, USB charging sockets itself are unaffected in the case of being electrically charged equipment and exception occur,
So as to lift reliability.
Above-mentioned USB charging sockets meet EMI/EMS and safety standard authentication requesting, strong antijamming capability, can be carried for user
For safe and reliable USB electrical equipment charging environment.
In the utility model embodiment, intelligent identification module includes at least one Intelligent Recognition chip.
In one embodiment, intelligent identification module includes an Intelligent Recognition chip, and above-mentioned multiple USB interfaces are 2
USB interface.Wherein, the Intelligent Recognition chip includes 4 output pins, i.e., two align negative output pin, connects 2 USB respectively
The positive and negative back end of interface.
In another embodiment, intelligent identification module includes multiple Intelligent Recognition chips, wherein the multiple intelligence is known
The input of other chip connects the output end of the power management module, the output end point of the multiple Intelligent Recognition chip respectively
The multiple USB interface is not connected.Wherein, the multiple Intelligent Recognition chip includes two Intelligent Recognition chips or two or more
Intelligent Recognition chip.For example, as shown in Fig. 2 intelligent identification module 14, including resistance R1, resistance R2, electric capacity C1, electric capacity C2,
One Intelligent Recognition chip U1 and the second Intelligent Recognition chip U2, the multiple USB interface includes the first USB interface, the 2nd USB connects
Mouth and the 3rd USB interface, wherein：
First Intelligent Recognition chip U1 positive input terminal is by the positive output ends of resistance R1 connection power management modules, and first
The negative output terminal of Intelligent Recognition chip U1 negative input end connection power management module, and known by the intelligence of electric capacity C1 connections first
Other chip U1 positive input terminal, the first data of the first Intelligent Recognition chip U1 the first output end the first USB interface of connection connect
Point, the first Intelligent Recognition chip U1 the second output end connect the second data contacts of the first USB interface；
Second Intelligent Recognition chip U2 positive input terminal is by the positive output ends of resistance R2 connection power management modules, and second
The negative output terminal of Intelligent Recognition chip U2 negative input end connection power management module, and known by the intelligence of electric capacity C2 connections second
Other chip U2 positive input terminal, the first data of the second Intelligent Recognition chip U2 the first output end connection secondary USB interface connect
Point, the second data contacts of the second Intelligent Recognition chip U2 the second output end connection secondary USB interface, the second Intelligent Recognition core
Piece U2 the 3rd output end connects the first data contacts of the 3rd USB interface, the second Intelligent Recognition chip U2 the 4th output end
Connect the second data contacts of the 3rd USB interface；
The power supply contact of first USB interface, secondary USB interface and the 3rd USB interface connects power management module respectively
Positive output end, the ground contact of the power supply contact of the first USB interface, secondary USB interface and the 3rd USB interface respectively are used to connect
Ground.
For example, Intelligent Recognition chip, including the first Intelligent Recognition chip and the second Intelligent Recognition chip are existing city
Chip is sold, as a kind of embodiment, the first Intelligent Recognition chip and the second Intelligent Recognition chip select model respectively
UC2633 and UC2634 chip；For example, the first Intelligent Recognition chip is the UC2633 chips of Xin Zhuowei companies, the second intelligence is known
Other chip is the UC2634 chips of Xin Zhuowei companies.
As a kind of embodiment, as shown in figure 3, power management module 11 includes pretreatment circuit 111, power management electricity
Road 112, first control circuit 113, transformer 114 and circuit of synchronous rectification 115, wherein transformer include the first primary coil,
Second primary coil and secondary coil, electric power management circuit include power management chip U3 and feedback circuit；Pre-process circuit
Input is used to connect civil power input line, pre-processes the first primary coil of the output end connection transformer of circuit；Power management
Chip U3 PWM output pins connect the first primary coil of transformer by first control circuit, power management chip U3's
Power supply output pin connects the both ends of the second primary coil of transformer, power management chip U3 electricity by overvoltage crowbar
Stream monitoring pin connection current foldback circuit, it is anti-that power management chip U3 current monitoring pin also connects its by feedback circuit
Feedthrough voltage input pin；The input of the secondary coil connection circuit of synchronous rectification of transformer, the output end of circuit of synchronous rectification
Connect the input of intelligent identification module.
Fig. 4 be an embodiment USB charging sockets in power management module, overvoltage crowbar and current foldback circuit
Circuit diagram.
In one embodiment, as shown in figure 4, overvoltage crowbar 12 includes：Resistance R10, resistance R12, electric capacity C3, electricity
Hold C4 and diode D1, wherein：The negative electrode of the diode D1 connects the power supply output pin of the power management chip U3
The feedback voltage input pin that VDD, the diode D1 anode pass through the resistance R10 connections power management chip U3
FB；Described electric capacity C3 one end connects the power supply output pin VDD of the power management chip U3, other end ground connection；The electric capacity
C4 is in parallel with the electric capacity C3；Described resistance R12 one end connects the PWM output pin Gate of the power management chip U3, separately
One end connects the current monitoring pin Senes of the power management chip U3.As a kind of embodiment, power management chip U3
From model OB2362 chip.
Specifically, when the output voltage rise of power management module, on the voltage synchronous of the primary coil of transformer second
Rise so that power management chip U3 power supply output pin vdd voltage rises, when the voltage on power supply output pin VDD exceedes
During the first setting higher limit, power management chip U3 is stopped to close output.
In one embodiment, as shown in figure 4, current foldback circuit 13 includes：Resistance R7, resistance R8, resistance R13 and electricity
Hold C5, wherein：Resistance R13 one end connection power management chip U3 current monitoring pin Senes, the resistance R13 other end
Pass through resistance R7 and resistance the R8 ground connection of parallel connection；Electric capacity C5 one end connection power management chip U3 current monitoring pin
Senes, electric capacity C5 other end ground connection.
Specifically, when power management module output overcurrent/overload, the electric current flowed through on resistance R7 and resistance R7R8 can become
Greatly, the voltage that power management chip U3 Senes pins detect can rise, when the voltage on Senes pins is set more than second
When determining higher limit, power management chip U3 is stopped to close output.
In one embodiment, as shown in figure 4, first control circuit includes triode Q1, resistance R3, resistance R4, resistance
R5, resistance R6, resistance R11, electric capacity C6 and diode D2, wherein：Triode Q1 grid passes through resistance R11 connection power managements
Chip U3 PWM output pin Gate, triode Q1 source ground, the first primary line of the drain electrode connection transformer of triode
The first end of circle, the drain electrode of triode also pass through resistance R3 and resistance R4 connection diodes D2 in parallel anode；Diode D2
Negative electrode pass through the electric capacity C6, the resistance R5 that are mutually in parallel and the second end of the first primary coil of resistance R6 connection transformers.
In one embodiment, as shown in figure 4, feedback circuit includes photo-coupler U2A and electric capacity C7, electric power management circuit
Also include resistance R9, resistance R14 and diode D3, wherein：Electric capacity C7 both ends connect photo-coupler U4A the first output respectively
End and the second output end, photo-coupler U4A the first output end connection power management chip U3 feedback voltage input pin, light
Coupler U4A the second output head grounding；Power management chip U3 reference sets pin RI connection diodes D3 anode, electricity
Source control chip U3 reference sets first ends of the pin RI also by the second primary coil of resistance R9 connection transformers；Two poles
Pipe D3 negative electrode is grounded by resistance R14.
In one embodiment, as shown in figure 4, pretreatment circuit 11 includes fuse F1, common mode inductance LF1, rectifier bridge
The component such as BD1 and some electric capacity, resistance, the wherein output end of rectifier bridge are the output end for pre-processing circuit 11.
In one embodiment, as shown in figure 4, circuit of synchronous rectification 115 includes synchronous rectification chip and its peripheral circuit.
For example, chip of the synchronous rectification chip from MPS series, such as MP6901 chips.
In one embodiment, as shown in figure 4, the power management module also includes filter circuit 116, the filtered electrical
The input on road connects the output end of the circuit of synchronous rectification, filters the output end connection Intelligent Recognition mould for stating circuit
The input of block.Specifically, filter circuit 16 includes common mode inductance LF2, some resistance and some electrochemical capacitors.
In one embodiment, the USB charging sockets also include isolation circuit, the input connection of the isolation circuit
The output end of the circuit of synchronous rectification, the output end of the isolation circuit connect the input of the intelligent identification module.
As a kind of embodiment, the embodiment of isolation circuit can be found in the circuit diagram shown in Fig. 5, herein no longer
Repeat.
In one embodiment, above-mentioned USB charging sockets also include the insulation crust with cavity, above-mentioned power management mould
It is outer that block, overvoltage crowbar, current foldback circuit, intelligent identification module, multiple USB interfaces and other circuits are placed in insulation
In the cavity of shell.Wherein, a surface of above-mentioned insulation crust is provided with the opening of multiple USB shapes.In one embodiment, it is above-mentioned
The cross-sectional shapes of insulation crust are rectangle, for example, 86mm*86mm square.Above-mentioned insulation crust can make panel jack peace
Fill on the wall, for example, on embedded wall.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
- A kind of 1. USB charging sockets, it is characterised in that including：Power management module, overvoltage crowbar, current foldback circuit, Intelligent identification module and multiple USB interfaces, wherein, the input of the power management module is used to connect civil power input line, institute The output end for stating power management module connects the input of the intelligent identification module, the overvoltage crowbar and described respectively Current foldback circuit, the output end of the intelligent identification module connect the multiple USB interface respectively；The intelligent identification module, including multiple Intelligent Recognition chips, wherein the input of the multiple Intelligent Recognition chip point Do not connect the output end of the power management module, the output end of the multiple Intelligent Recognition chip connects the multiple respectively USB interface.
- 2. USB charging sockets as claimed in claim 1, it is characterised in that the intelligent identification module, including resistance R1, electricity Resistance R2, electric capacity C1, electric capacity C2, the first Intelligent Recognition chip U1 and the second Intelligent Recognition chip U2, the multiple USB interface include First USB interface, secondary USB interface and the 3rd USB interface, wherein：The positive input terminal of the first Intelligent Recognition chip U1 is just defeated by the resistance R1 connections power management module Go out end, the negative input end of the first Intelligent Recognition chip U1 connects the negative output terminal of the power management module, and passes through institute State electric capacity C1 connections the first Intelligent Recognition chip U1 positive input terminal, the first output of the first Intelligent Recognition chip U1 End connects the first data contacts of first USB interface, the second output end connection institute of the first Intelligent Recognition chip U1 State the second data contacts of the first USB interface；The positive input terminal of the second Intelligent Recognition chip U2 is just defeated by the resistance R2 connections power management module Go out end, the negative input end of the second Intelligent Recognition chip U2 connects the negative output terminal of the power management module, and passes through institute State electric capacity C2 connections the second Intelligent Recognition chip U2 positive input terminal, the first output of the second Intelligent Recognition chip U2 End connects the first data contacts of the secondary USB interface, the second output end connection institute of the second Intelligent Recognition chip U2 The second data contacts of secondary USB interface are stated, the 3rd output end of the second Intelligent Recognition chip U2 connects the 3rd USB First data contacts of interface, the 4th output end of the second Intelligent Recognition chip U2 connect the of the 3rd USB interface Two data contacts；The power supply contact of first USB interface, the secondary USB interface and the 3rd USB interface connects the electricity respectively The positive output end of source control module, the power supply of first USB interface, the 2nd USB interfaces and the 3rd USB interface The ground contact of contact respectively is used to be grounded.
- 3. USB charging sockets as claimed in claim 1, it is characterised in that the power management module, including pretreatment electricity Road, electric power management circuit, first control circuit, transformer, circuit of synchronous rectification, wherein the transformer includes the first primary line Circle, the second primary coil and secondary coil, the electric power management circuit include power management chip U3 and feedback circuit；The input of the pretreatment circuit is used to connect the civil power input line, the output end connection institute of the pretreatment circuit State the first primary coil of transformer；The PWM output pins of the power management chip U3 are connected at the beginning of the first of the transformer by the first control circuit Level coil, the power supply output pin of the power management chip U3 connect the of the transformer by the overvoltage crowbar The both ends of two primary coils, the current monitoring pin of the power management chip U3 connect the current foldback circuit, the electricity Source control chip U3 current monitoring pin also connects its feedback voltage input pin by the feedback circuit；The secondary coil of the transformer connects the input of the circuit of synchronous rectification, the output end of the circuit of synchronous rectification Connect the input of the intelligent identification module.
- 4. USB charging sockets as claimed in claim 3, it is characterised in that the overvoltage crowbar, including：Resistance R10, Resistance R12, electric capacity C3, electric capacity C4 and diode D1, wherein：The negative electrode of the diode D1 connects the power supply output pin of the power management chip U3, the anode of the diode D1 Pass through the feedback voltage input pin of the resistance R10 connections power management chip U3；Described electric capacity C3 one end connects the power supply output pin of the power management chip U3, other end ground connection；The electric capacity C4 is in parallel with the electric capacity C3；Described resistance R12 one end connects the PWM output pins of the power management chip U3, and the other end connects the power management Chip U3 current monitoring pin.
- 5. USB charging sockets as claimed in claim 3, it is characterised in that the current foldback circuit includes：Resistance R7, electricity R8, resistance R13 and electric capacity C5 are hindered, wherein：One end of the resistance R13 connects the current monitoring pin of the power management chip U3, the other end of the resistance R13 Pass through the resistance R7 and the resistance R8 ground connection of parallel connection；One end of the electric capacity C5 connects the current monitoring pin of the power management chip U3, another termination of the electric capacity C5 Ground.
- 6. USB charging sockets as claimed in claim 3, it is characterised in that the first control circuit includes triode Q1, electricity R3, resistance R4, resistance R5, resistance R6, resistance R11, electric capacity C6 and diode D2 are hindered, wherein：The grid of the triode Q1 is described by the PWM output pins of the resistance R11 connections power management chip U3 Triode Q1 source ground, the drain electrode of the triode connects the first end of the first primary coil of the transformer, described The drain electrode of triode also passes through the resistance R3 and the resistance R4 connections diode D2 in parallel anode；The negative electrode of the diode D2 passes through described in the electric capacity C6, the resistance R5 that are mutually in parallel and the resistance R6 connections Second end of the first primary coil of transformer.
- 7. USB charging sockets as claimed in claim 3, it is characterised in that the feedback circuit includes photo-coupler U2A and electricity Holding C7, the electric power management circuit also includes resistance R9, resistance R14 and diode D3, wherein：The both ends of the electric capacity C7 connect the first output end and the second output end of the photo-coupler U4A, the optocoupler respectively Clutch U4A the first output end connects the feedback voltage input pin of the power management chip U3, the photo-coupler U4A's Second output head grounding；The reference of the power management chip U3 sets pin connection diode D3 anode, the power management chip U3 Reference first end of the pin also by the second primary coil of the resistance R9 connections transformer is set；The diode D3 negative electrode is grounded by the resistance R14.
- 8. the USB charging sockets as any one of claim 3 to 7, it is characterised in that the USB charging sockets also wrap Include isolation circuit, the input of the isolation circuit connects the output end of the circuit of synchronous rectification, the isolation circuit it is defeated Go out the input that end connects the intelligent identification module.
- 9. the USB charging sockets as any one of claim 3 to 7, it is characterised in that the power management module also wraps Filter circuit is included, the input of the filter circuit connects the output end of the circuit of synchronous rectification, filters and state the defeated of circuit Go out the input that end connects the intelligent identification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163370.8U CN206712482U (en) | 2016-10-25 | 2016-10-25 | USB charging sockets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163370.8U CN206712482U (en) | 2016-10-25 | 2016-10-25 | USB charging sockets |
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| Publication Number | Publication Date |
|---|---|
| CN206712482U true CN206712482U (en) | 2017-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621163370.8U Active CN206712482U (en) | 2016-10-25 | 2016-10-25 | USB charging sockets |
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| Country | Link |
|---|---|
| CN (1) | CN206712482U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072738A (en) * | 2020-09-02 | 2020-12-11 | 浙江启扬智能科技有限公司 | Power management system of handheld device |
| EP3893358A4 (en) * | 2018-12-05 | 2023-02-08 | Schneider Electric (Australia) Pty Limited | Socket |
| CN116488300A (en) * | 2023-05-23 | 2023-07-25 | 深圳市诺希实业有限公司 | Multifunctional mobile equipment charging protection device |
-
2016
- 2016-10-25 CN CN201621163370.8U patent/CN206712482U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3893358A4 (en) * | 2018-12-05 | 2023-02-08 | Schneider Electric (Australia) Pty Limited | Socket |
| CN112072738A (en) * | 2020-09-02 | 2020-12-11 | 浙江启扬智能科技有限公司 | Power management system of handheld device |
| CN116488300A (en) * | 2023-05-23 | 2023-07-25 | 深圳市诺希实业有限公司 | Multifunctional mobile equipment charging protection device |
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Address after: 516007 b1-b3 workshop, No.39 Hechang 6th Road East, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: Legrand intelligent electric (Huizhou) Co.,Ltd. Address before: 516007 b1-b3 workshop, No.39 Hechang 6th Road East, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee before: TCL-LEGRAND INTERNATIONAL ELECTRICAL (HUIZHOU) Co.,Ltd. |
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