CN110474441A - A kind of wireless charging emitter - Google Patents
A kind of wireless charging emitter Download PDFInfo
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- CN110474441A CN110474441A CN201910889179.3A CN201910889179A CN110474441A CN 110474441 A CN110474441 A CN 110474441A CN 201910889179 A CN201910889179 A CN 201910889179A CN 110474441 A CN110474441 A CN 110474441A
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- 238000002955 isolation Methods 0.000 claims abstract description 24
- 239000004065 semiconductor Substances 0.000 claims description 193
- 239000003990 capacitor Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 13
- 235000019504 cigarettes Nutrition 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 208000010718 Multiple Organ Failure Diseases 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000004070 electrodeposition Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention relates to wireless charging device technical field more particularly to a kind of wireless charging emitters, wherein a wireless charging isolation circuit is arranged in wireless charging emitter, wireless charging isolation circuit includes: one first input interface；One second input interface；One first isolated location, the input terminal of the first isolated location are connected to the second input interface；One second isolated location, the input terminal of the second isolated location are connected to the first input interface, and the output end of the second isolated location connects the output end of the first isolated location, and connect with the input terminal of a back-end circuit.The beneficial effect of technical solution of the present invention is: can power for vehicular high-power wireless charging transmitting terminal, meet the diversity of input power, built-in twoport wireless charging isolation circuit guarantees in input interface while when input simultaneously, the uniqueness of power supply, guarantee simultaneously two-way power supply will not crosstalk, guarantee the safety of connection equipment on the input interface.
Description
Technical field
The present invention relates to wireless charging device technical field more particularly to a kind of wireless charging emitters.
Background technique
As various intelligent uses infiltrate into each corner in life, portable electronic device has become people's life
In indispensable article, and used and the demands of user to adapt to various intelligence, the display screen of electronic equipment is also gradually
Increase, therefore the power consumption rate of equipment increases sharply, the battery durable of mancarried electronic aid just becomes many people and needs to face
The problem of, portable electronic equipment is charged to for the selection of many users using automobile.
Existing wireless charging transmitting terminal, power supply interface is single, is unable to satisfy different interface input power supplies, is placed on vehicle-mounted
Onboard charger between cigar lighter and wireless charging transmitting terminal is the conversion line of a DC-DC (DC to DC), is increased
Power supply conversion efficiency loss, the output power that existing onboard charger can provide on the market is limited, to limit vehicle-mounted
The promotion of wireless charger power.Therefore, in view of the above-mentioned problems, becoming those skilled in the art's problem urgently to be resolved.
Summary of the invention
For the above-mentioned problems in the prior art, a kind of wireless charging hair for seeking to fill that vehicular high-power is now provided
Injection device.
Specific technical solution is as follows:
The present invention provides a kind of wireless charging emitter, wherein setting one is wireless in the wireless charging emitter
Charge isolation circuit, and the wireless charging isolation circuit includes:
One first input interface；
One second input interface；
One first isolated location, the input terminal of first isolated location are connected to second input interface；
One second isolated location, the input terminal of second isolated location are connected to first input interface, and described
The output end of two isolated locations connects the output end of first isolated location, and connect with the input terminal of a back-end circuit；
When only the second input interface access power supply, connects first isolated location and supplied to the back-end circuit
Electricity；
When only described first input interface accesses the power supply, second isolated location is connected to the rear end electricity
Road power supply；
When first input interface first accesses the power supply, then after second input interface is accessed the power supply,
Second isolated location is first disconnected, then connects first isolated location and powers to the back-end circuit；
When second input interface first accesses the power supply, then after first input interface is accessed the power supply,
It remains up first isolated location and disconnects second isolated location, give the rear end using first isolated location
Circuit power supply；
When second input interface first accesses the power supply, then after first input interface is accessed the power supply,
First isolated location is first disconnected, then connects second isolated location and powers to the back-end circuit；
When first input interface first accesses the power supply, then after second input interface is accessed the power supply,
It remains up second isolated location and disconnects first isolated location, give the rear end using second isolated location
Circuit power supply.
Preferably, first isolated location includes:
One first diode, the anode of the first diode are connected to second input interface；
One second diode, the anode of second diode are connected to second input interface；
One first metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor are connected to second input interface；
One second metal-oxide-semiconductor, the source electrode of second metal-oxide-semiconductor is connected to the source electrode of first metal-oxide-semiconductor, and passes through one first
Resistance is connected to the grid of first metal-oxide-semiconductor, and the drain electrode of second metal-oxide-semiconductor is connected to the input terminal of the back-end circuit；
One third metal-oxide-semiconductor, the drain electrode of the third metal-oxide-semiconductor are connected to the grid of second metal-oxide-semiconductor by a second resistance
Pole, the grid of the third metal-oxide-semiconductor are connected to the cathode of the first diode, the third metal-oxide-semiconductor by a 3rd resistor
Source electrode be connected to a ground terminal；
One the 4th resistance, the 4th resistance are connected between the 3rd resistor and the source electrode of the third metal-oxide-semiconductor；
One first capacitor, the first capacitor are connected to the source electrode of the third metal-oxide-semiconductor and the grid of the third metal-oxide-semiconductor
Between.
Preferably, second isolated location includes:
The drain electrode of one the 4th metal-oxide-semiconductor, the 4th metal-oxide-semiconductor is connected to first input interface；
The source electrode of one the 5th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor is connected to the source electrode of the 4th metal-oxide-semiconductor, and the described 5th
The source electrode of metal-oxide-semiconductor is connected to the grid of the 4th metal-oxide-semiconductor by one the 5th resistance, and the drain electrode of the 5th metal-oxide-semiconductor is connected to
The input terminal of the back-end circuit；
One the 6th metal-oxide-semiconductor, the drain electrode of the 6th metal-oxide-semiconductor are connected to the grid of the 5th metal-oxide-semiconductor by one the 6th resistance
The grid of pole, the 6th metal-oxide-semiconductor is connected to first input interface, the source of the 6th metal-oxide-semiconductor by one the 7th resistance
Pole is connected to the ground terminal；
One the 7th metal-oxide-semiconductor, the drain electrode of the 7th metal-oxide-semiconductor are connected to the grid of the 6th metal-oxide-semiconductor, the 7th MOS
The source electrode of pipe is connected to the ground terminal, and the grid of the 7th metal-oxide-semiconductor is connected to the two or two pole by one the 8th resistance
The cathode of pipe；
One the 9th resistance, the 9th resistance are connected between the grid and the ground terminal of the 7th metal-oxide-semiconductor；
One second capacitor, second capacitor are parallel to the 9th resistance；
1 the tenth resistance, the tenth resistance are connected between the grid and the ground terminal of the 6th metal-oxide-semiconductor；
One third capacitor, the third capacitor are parallel to the tenth resistance.
Preferably, the wireless charging isolation circuit further include:
One the 4th capacitor, the 4th capacitance connection in the output end of second isolated location and the ground terminal it
Between.
Preferably, first input interface is TYPE-C mouthfuls.
Preferably, second input interface is DC mouthfuls.
Preferably, further includes:
One vehicle-mounted cigarette lighter；
One onboard charger, the power input of the onboard charger connect the power supply output of the vehicle-mounted cigarette lighter
End；
One adapter, the power input of the adapter connect the output end of the wireless charging isolation circuit.
Preferably, the back-end circuit includes:
One DC conversion unit, the input terminal of the DC conversion unit connect the output end of first isolated location,
And the output end of connection second isolated location, for the direct current of first input interface or described second to be inputted
The converting direct-current power into alternating-current power of interface；
One wireless charging unit, the input terminal of the wireless charging unit connect the output end of the DC conversion unit；
One coil, the coil are connected to the output end of the wireless charging unit；
One resonant capacitance, the resonant capacitance are connected to the output end of the coil and the wireless charging unit.
The beneficial effect of technical solution of the present invention is: a kind of wireless charging emitter is provided, by defeated first
The first isolated location and the second isolated location are respectively set between incoming interface and the second input interface, can for vehicular high-power without
The power supply of line charge electricity transmitting terminal, meets the diversity of input power, while built-in twoport wireless charging isolation circuit guarantees defeated
When incoming interface inputs simultaneously, the uniqueness of power supply, while guarantee two-way power supply will not crosstalk, guarantee be connected to input interface
The safety of upper equipment.
Detailed description of the invention
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing be merely to illustrate and
It illustrates, and is not meant to limit the scope of the invention.
Fig. 1 is a kind of wireless charging isolates circuit diagram of the embodiment of the present invention；
Fig. 2 is another wireless charging isolates circuit diagram of the embodiment of the present invention；
Fig. 3 is the overall structure diagram of the embodiment of the present invention；
Fig. 4 is the wireless charging isolation circuit explanatory diagram of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
The present invention provides a kind of wireless charging transmitting terminal device, wherein a wireless charging is arranged in wireless charging emitter
Electric isolating circuit, wireless charging isolation circuit include:
One first input interface 1；
One second input interface 2；
One first isolated location 3, the input terminal of the first isolated location 3 are connected to the second input interface 2；
One second isolated location 4, the input terminal of the second isolated location 4 are connected to the first input interface 1, the second isolated location
4 output end connects the output end of the first isolated location 3, and connect with the input terminal of a back-end circuit 5；
When only the second input interface 2 accesses power supply, connects the first isolated location 3 and power to back-end circuit 5；
When only the first input interface 1 accesses power supply, connects the second isolated location 2 and power to back-end circuit 5；
When the first input interface 1 first accesses power supply, then after the second input interface 2 is accessed power supply, the second isolation is first disconnected
Unit 4, then connect the first isolated location 3 and power to back-end circuit 5；
When the second input interface 2 first accesses power supply, then will after the first input interface 1 accesses power supply, remain up first every
From unit 3 and the second isolated location 4 is disconnected, is powered using the first isolated location 3 to back-end circuit 5；
When the second input interface 2 first accesses power supply, then after the first input interface 1 is accessed power supply, the first isolation is first disconnected
Unit 3, then connect the second isolated location 4 and power to back-end circuit 5；
When the first input interface 1 first accesses power supply, then will after the second input interface 2 accesses power supply, remain up second every
From unit 3 and the first isolated location 3 is disconnected, is powered using the second isolated location 3 to back-end circuit 5.
Further include:
One vehicle-mounted cigarette lighter 6；
One onboard charger 7, the power output end of the power input connection vehicle-mounted cigarette lighter 6 of onboard charger 7；
One adapter 8, the output end of the power input connection wireless charging isolation circuit of adapter 8.
By the wireless charging transmitting terminal device of above-mentioned offer, in conjunction with shown in Fig. 1,3,4, the connection of wireless charging isolation circuit
Between onboard charger 7 and adapter 8, placed in the position of the power input of wireless charging isolation circuit different types of defeated
Incoming interface, respectively the first input interface 1 and the second input interface 2, being connected to the second input interface 2 is the first isolated location
3, being connected to the first input interface 1 is the second isolated location 4.
Further, it when only the second input interface 2 accesses power supply, connects the first isolated location 3 and is supplied to back-end circuit 5
Electricity；
When only the first input interface 1 accesses power supply, the second isolation is connected by the pin VBUS of the first input interface 1
Unit 2 is powered to back-end circuit 5；
When the first input interface 1 first accesses power supply, then after the second input interface 2 is accessed power supply, the second isolation is first disconnected
Unit 4, then connect the first isolated location 3 and power to back-end circuit 5；
When the second input interface 2 first accesses power supply, then will after the first input interface 1 accesses power supply, remain up first every
From unit 3 and the second isolated location 4 is disconnected, is powered using the first isolated location 3 to back-end circuit 5；
When the second input interface 2 first accesses power supply, then after the first input interface 1 is accessed power supply, the first isolation is first disconnected
Unit 3, then connect the second isolated location 4 and power to back-end circuit 5；
When the first input interface 1 first accesses power supply, then will after the second input interface 2 accesses power supply, remain up second every
From unit 3 and the first isolated location 3 is disconnected, is powered using the second isolated location 3 to back-end circuit 5, and the first input connects simultaneously
It is also to be fully disconnected between mouth 1 and the second input interface 2, can powers, meet defeated for vehicular high-power wireless charging transmitting terminal
Enter the diversity of power supply, while built-in twoport wireless charging isolation circuit guarantees to supply in input interface while when input
The uniqueness of electricity, at the same guarantee two-way power supply will not crosstalk, guarantee the safety of connection equipment on the input interface.
In a kind of preferably embodiment, the first isolated location 3 includes:
One first diode D1, the anode of first diode D1 are connected to the second input interface 2；
One second diode D2, the anode of the second diode D2 are connected to the second input interface 1；
One first metal-oxide-semiconductor (field-effect tube) Q1, the drain electrode of the first metal-oxide-semiconductor Q1 are connected to the second input interface 2；
One second metal-oxide-semiconductor Q2, the source electrode of the second metal-oxide-semiconductor Q2 is connected to the source electrode of the first metal-oxide-semiconductor Q1, and passes through one first electricity
Resistance R1 is connected to the grid of the first metal-oxide-semiconductor Q1, and the drain electrode of the second metal-oxide-semiconductor Q2 is connected to the input terminal of back-end circuit 5；
The drain electrode of one third metal-oxide-semiconductor Q3, third metal-oxide-semiconductor Q3 are connected to the grid of the second metal-oxide-semiconductor Q2 by a second resistance R2
Pole, the grid of third metal-oxide-semiconductor Q3 are connected to the cathode of first diode Q1, the source of third metal-oxide-semiconductor Q3 by a 3rd resistor R3
Pole is connected to a ground terminal GND；
One the 4th resistance R4, the 4th resistance R4 are connected between 3rd resistor R3 and the source electrode of third metal-oxide-semiconductor Q3；
One first capacitor C1, first capacitor C1 be connected to third metal-oxide-semiconductor Q3 source electrode and third metal-oxide-semiconductor Q3 grid it
Between.
Second isolated location 4 includes:
One the 4th metal-oxide-semiconductor Q4, the drain electrode of the 4th metal-oxide-semiconductor Q4 are connected to the first input interface 1；
The source electrode of one the 5th metal-oxide-semiconductor Q5, the 5th metal-oxide-semiconductor Q5 are connected to the source electrode of the 4th metal-oxide-semiconductor Q4, and the 5th metal-oxide-semiconductor Q5
Source electrode the grid of the 4th metal-oxide-semiconductor Q4 is connected to by one the 5th resistance R5, the drain electrode of the 5th metal-oxide-semiconductor Q5 is connected to back-end circuit
5 input terminal；
The drain electrode of one the 6th metal-oxide-semiconductor Q6, the 6th metal-oxide-semiconductor Q6 are connected to the grid of the 5th metal-oxide-semiconductor Q5 by one the 6th resistance R6
The grid of pole, the 6th metal-oxide-semiconductor Q6 is connected to the first input interface 1, the source electrode connection of the 6th metal-oxide-semiconductor Q6 by one the 7th resistance R7
To ground terminal GND；
One the 7th metal-oxide-semiconductor Q7, the drain electrode of the 7th metal-oxide-semiconductor Q7 are connected to the grid of the 6th metal-oxide-semiconductor Q6, the 7th metal-oxide-semiconductor Q7's
Source electrode is connected to ground terminal GND, and the grid of the 7th metal-oxide-semiconductor Q7 is connected to the negative of the second diode D2 by one the 8th resistance R8
Pole；
One the 9th resistance R9, the 9th resistance R9 are connected between the grid and ground terminal GND of the 7th metal-oxide-semiconductor Q7；
One second capacitor C2, the second capacitor C2 is parallel to the 9th resistance R9；
The a tenth resistance R10, the tenth resistance R10 are connected between the grid and ground terminal GND of the 6th metal-oxide-semiconductor Q6；
One third capacitor C3, third capacitor C3 are parallel to the tenth resistance R10.
Specifically, as shown in Figure 1, accessing power supply by following four embodiment,
Embodiment one: when only the second input interface 2 accesses power supply；Or
Power supply is accessed when the first input interface 1 first accesses power supply, then by the second input interface 2；Or
Power supply is accessed when the second input interface 2 first accesses power supply, then by the first input interface 1.
The present embodiment one is illustrated for accessing 12V power supply, i.e., passes through in the second input interface 2 access 12V DC power supply
First diode D1 and the second diode D2 arrive the divider resistance at the grid of third metal-oxide-semiconductor Q3 and the 7th metal-oxide-semiconductor Q7 respectively, i.e.,
Respectively by 3rd resistor R3, the 4th resistance R4 partial pressure and the 8th resistance R8, the 9th resistance R9 partial pressure, so that third metal-oxide-semiconductor Q3
It is connected with the 7th metal-oxide-semiconductor Q7, the drain electrode of third metal-oxide-semiconductor Q3 is conducting to ground terminal GND after third metal-oxide-semiconductor Q3 conducting.
Further, the 12V voltage of the second input interface 2 access passes through the diode in the first metal-oxide-semiconductor Q1 from the first MOS
The drain-to-source of pipe Q1 becomes 11.3V, and after third metal-oxide-semiconductor Q3 conducting, the voltage between the grid of the first metal-oxide-semiconductor Q1 is logical
Crossing is 6V after first resistor R1 and second resistance R2 is divided, exist between the grid and its source electrode of the first metal-oxide-semiconductor Q1 at this time-
The voltage difference of 6V, so that the first metal-oxide-semiconductor Q1 is fully on, similarly, between the grid and its source electrode of the 2nd MODS pipe Q2
There is identical voltage difference, so that the 2nd MODS pipe Q2 is fully on, and fully in the first metal-oxide-semiconductor Q1 and the 2nd MODS pipe Q2
Afterwards, the 12V voltage source the second input interface 2 accessed is powered into back-end circuit 5.
Further, after the 7th metal-oxide-semiconductor Q7 conducting, the voltage of the grid of the 6th metal-oxide-semiconductor Q6 is caused to reduce, so that the 6th
The voltage for the grid opened is not achieved in metal-oxide-semiconductor Q6, so that the 6th metal-oxide-semiconductor Q6 be made to be constantly in off state.
Further, pass through the 5th resistance R5 connection between the source electrode of the 4th metal-oxide-semiconductor Q4 and the grid of the 5th metal-oxide-semiconductor Q5,
Current potential is equal always, therefore the 4th metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5 are also at the state of shutdown.
Further, it is learnt by above-mentioned, as long as the second input interface 2 has the access of 12V voltage, regardless of the first input connects
Mouthful 1 has no-voltage access, and that in the conductive state is all the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and in an off state is the
Four metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5, so that the power supply for being input to back-end circuit 5 remains the access of the second input interface 2
Power supply, while the power supply of the second input interface 2 input will not be into the first input interface 1, to guarantee the first input interface 1
Equipment be not damaged.
Embodiment two: it when only the first input interface 1 accesses power supply, connects the second isolated location 3 and is supplied to back-end circuit
Electricity.
The present embodiment two is illustrated for accessing 5V power supply, i.e., accesses 5V power supply in the first input interface 1, by the 7th electricity
The grid for hindering R7 and the 6th resistance R10 in the 6th metal-oxide-semiconductor Q6 generates fixed 2.5V branch pressure voltage, so that the 6th metal-oxide-semiconductor Q6
There are the voltage differences of 2.5V between grid and its source electrode, so that the 6th metal-oxide-semiconductor Q6 is connected, and the drain electrode of the 6th metal-oxide-semiconductor Q6
It is conducting to ground pipe GND.
Further, the 5V voltage that above-mentioned first input interface 1 accesses passes through the diode in the 4th metal-oxide-semiconductor Q4 to the 4th
The source electrode of metal-oxide-semiconductor Q4, when the 6th metal-oxide-semiconductor Q6 is conducting to ground terminal GND, the grid of the 5th metal-oxide-semiconductor Q5 passes through the 5th resistance R5
It is divided with the 6th resistance R6, the branch pressure voltage obtained at the 5th resistance R5 is 4.5V, therefore, so that in the 4th metal-oxide-semiconductor Q4
Grid and source electrode between exist -4.5V voltage difference so that the 4th metal-oxide-semiconductor Q4 be connected, meanwhile, the 5th metal-oxide-semiconductor Q5's
There is also identical voltage differences for source electrode and drain electrode, so that the 5th metal-oxide-semiconductor Q5 is also fully on, and then by the first input interface
The 5V voltage of 1 access is powered by the 4th metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5 to back-end circuit 5.
Further, the 5V voltage that above-mentioned first input interface 1 accesses is by the diode in the second metal-oxide-semiconductor Q2 to second
The source electrode of metal-oxide-semiconductor Q2 does not turn on state since third metal-oxide-semiconductor Q3 is in, the grid of the second metal-oxide-semiconductor Q2 and the electricity of source electrode
Position is equal, so that the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are constantly in off state.
Embodiment three: when only the first input interface 1 accesses power supply；Or
When the second input interface 2 first accesses power supply, then after the first input interface 1 is accessed power supply, the first isolation is first disconnected
Unit 3, then connect the second isolated location 4 and power to back-end circuit 5；Or
When the first input interface 1 first accesses power supply, then will after the second input interface 2 accesses power supply, remain up second every
From unit 3 and the first isolated location 3 is disconnected, is powered using the second isolated location 3 to back-end circuit 5.
As shown in Fig. 2, the present embodiment is similar to above-described embodiment one, only the first input interface 1 and the second input are connect
Mouthfuls 2 location swap, i.e., in the first input interface 1 access 12V DC power supply by first diode D1 and the in the present embodiment
Two diode D2 arrive the divider resistance at the grid of third metal-oxide-semiconductor Q3 and the 7th metal-oxide-semiconductor Q7 respectively, i.e., pass through 3rd resistor respectively
R3, the 4th resistance R4 partial pressure and the 8th resistance R8, the 9th resistance R9 partial pressure, so that third metal-oxide-semiconductor Q3 and the 7th metal-oxide-semiconductor Q7 are led
It is logical, the drain electrode of third metal-oxide-semiconductor Q3 is conducting to ground terminal GND after third metal-oxide-semiconductor Q3 conducting.
Further, the 12V voltage of the first input interface 1 access passes through the diode in the first metal-oxide-semiconductor Q1 from the first MOS
The drain-to-source of pipe Q1 becomes 11.3V, and after third metal-oxide-semiconductor Q3 conducting, the voltage between the grid of the first metal-oxide-semiconductor Q1 is logical
Crossing is 6V after first resistor R1 and second resistance R2 is divided, exist between the grid and its source electrode of the first metal-oxide-semiconductor Q1 at this time-
The voltage difference of 6V, so that the first metal-oxide-semiconductor Q1 is fully on, similarly, between the grid and its source electrode of the 2nd MODS pipe Q2
There is identical voltage difference, so that the 2nd MODS pipe Q2 is fully on, and fully in the first metal-oxide-semiconductor Q1 and the 2nd MODS pipe Q2
Afterwards, the 12V voltage source the second input interface 2 accessed is powered into back-end circuit 5.
Further, after the 7th metal-oxide-semiconductor Q7 conducting, the voltage of the grid of the 6th metal-oxide-semiconductor Q6 is caused to reduce, so that the 6th
The voltage for the grid opened is not achieved in metal-oxide-semiconductor Q6, so that the 6th metal-oxide-semiconductor Q6 be made to be constantly in off state.
Further, pass through the 5th resistance R5 connection between the source electrode of the 4th metal-oxide-semiconductor Q4 and the grid of the 5th metal-oxide-semiconductor Q5,
Current potential is equal always, therefore the 4th metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5 are also at the state of shutdown.
Further, it is learnt by above-mentioned, as long as the first input interface 1 has the access of 12V voltage, regardless of the second input connects
Mouthfuls 2 have no-voltage access, and that in the conductive state is all the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and in an off state is the
Four metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5, so that the power supply for being input to back-end circuit 5 remains the access of the first input interface 1
Power supply, while the power supply of the first input interface 1 input will not be into the second input interface 2, to guarantee the second input interface 2
Equipment be not damaged.
Example IV: it when only the second input interface 2 accesses power supply, connects the first isolated location 3 and is supplied to back-end circuit
Electricity.
Similarly, the present embodiment four is similar to above-described embodiment two, and independent first input in above-described embodiment two is connect
Mouth 1 accesses power supply and changes the independent access of second input interface 2 power supply into, i.e., 5V power supply is accessed in the second input interface 2, by the 7th
Grid of the resistance R7 and the 6th resistance R10 in the 6th metal-oxide-semiconductor Q6 generates fixed 2.5V branch pressure voltage, so that the 6th metal-oxide-semiconductor Q6
Grid and its source electrode between there are the voltage difference of 2.5V so that the 6th metal-oxide-semiconductor Q6 is connected, and the leakage of the 6th metal-oxide-semiconductor Q6
Pole is conducting to ground pipe GND.
Further, the 5V voltage that above-mentioned second input interface 2 accesses passes through the diode in the 4th metal-oxide-semiconductor Q4 to the 4th
The source electrode of metal-oxide-semiconductor Q4, when the 6th metal-oxide-semiconductor Q6 is conducting to ground terminal GND, the grid of the 5th metal-oxide-semiconductor Q5 passes through the 5th resistance R5
It is divided with the 6th resistance R6, the branch pressure voltage obtained at the 5th resistance R5 is 4.5V, therefore, so that in the 4th metal-oxide-semiconductor Q4
Grid and source electrode between exist -4.5V voltage difference so that the 4th metal-oxide-semiconductor Q4 be connected, meanwhile, the 5th metal-oxide-semiconductor Q5's
There is also identical voltage differences for source electrode and drain electrode, so that the 5th metal-oxide-semiconductor Q5 is also fully on, and then by the second input interface
The 5V voltage of 2 accesses is powered by the 4th metal-oxide-semiconductor Q4 and the 5th metal-oxide-semiconductor Q5 to back-end circuit 5.
Further, the 5V voltage that above-mentioned second input interface 2 accesses is by the diode in the second metal-oxide-semiconductor Q2 to second
The source electrode of metal-oxide-semiconductor Q2 does not turn on state since third metal-oxide-semiconductor Q3 is in, the grid of the second metal-oxide-semiconductor Q2 and the electricity of source electrode
Position is equal, so that the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are constantly in off state.
In a kind of preferably embodiment, as shown in Figure 1, wireless charging isolation circuit further include:
One the 4th capacitor C4, the 4th capacitor C4 are connected between the output and ground GND of the second isolated location 4.
In a kind of preferably embodiment, the first input interface 1 is TYPE-C mouthfuls.
Second input interface 2 is DC mouthfuls.
Specifically, the first input interface 1 is TYPE-C mouthfuls or is micro-usb mouthfuls, and the second input interface 2 is 3.5mm
DC mouth, and be round mouth, DC mouthfuls can by the high current and on the market automobile level voltage of all vehicles, such as 12V, 24V,
36V, level can meet pressure resistance.
Further, when being directly inputted using DC mouthfuls, wireless charging transmitting terminal supports high-power charging, while vehicle-mounted nothing
Also there are conventional charging interfaces for line charge electricity transmitting terminal, TYPE-C mouthfuls or micro-usb mouthfuls, support to use this kind of charger
It is powered input, to provide corresponding transmission power.
In a kind of preferably embodiment, back-end circuit 5 includes:
One DC conversion unit 50, the input terminal of DC conversion unit 50 connect the output end of the first isolated location 3, and even
The output end for connecing the second isolated location 4, for by the direct current of the direct current of the first input interface 1 or the second input interface 2
It is converted into alternating current；
One wireless charging unit 51, the output end of the input terminal connection DC conversion unit 50 of wireless charging unit 51；
One coil L, coil L are connected to the output end of wireless charging unit 51；
One resonant capacitance C5, resonant capacitance C5 are connected to the output end of coil L and wireless charging unit 51.
Specifically, as shown in Figure 1, above-mentioned first isolated location 3 or the power supply of the second isolated location 4 are arrived back-end circuit 5
In DC conversion unit 50 input terminal, be supplied to wireless charging unit 51 after DC converting by DC conversion unit 50
Input terminal, the wireless charging chip in wireless charging unit 51 is harmonious by each metal-oxide-semiconductor, the coil L of control full-bridge part
Shake capacitor C5, to generate alternating magnetic field, provides energy for receipt of subsequent end, while (pulse is wide by PWM for wireless charging unit 51
Degree modulation) DC voltage in DC conversion unit 50 is adjusted in signal, to reach required voltage.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (8)
1. a kind of wireless charging emitter, which is characterized in that in the wireless charging emitter one wireless charging of setting every
From circuit, the wireless charging isolation circuit includes:
One first input interface；
One second input interface；
One first isolated location, the input terminal of first isolated location are connected to second input interface；
One second isolated location, the input terminal of second isolated location are connected to first input interface, described second every
From the output end that the output end of unit connects first isolated location, and it is connect with the input terminal of a back-end circuit；
When only the second input interface access power supply, connects first isolated location and power to the back-end circuit；
When only described first input interface accesses the power supply, connects second isolated location and supplied to the back-end circuit
Electricity；
When first input interface first accesses the power supply, then after second input interface is accessed the power supply, first break
Second isolated location is opened, then connects first isolated location and powers to the back-end circuit；
When second input interface first accesses the power supply, then after first input interface is accessed the power supply, keep
It connects first isolated location and disconnects second isolated location, give the back-end circuit using first isolated location
Power supply；
When second input interface first accesses the power supply, then after first input interface is accessed the power supply, first break
First isolated location is opened, then connects second isolated location and powers to the back-end circuit；
When first input interface first accesses the power supply, then after second input interface is accessed the power supply, keep
It connects second isolated location and disconnects first isolated location, give the back-end circuit using second isolated location
Power supply.
2. a kind of wireless charging emitter according to claim 1, which is characterized in that the first isolated location packet
It includes:
One first diode, the anode of the first diode are connected to second input interface；
One second diode, the anode of second diode are connected to second input interface；
One first metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor are connected to second input interface；
One second metal-oxide-semiconductor, the source electrode of second metal-oxide-semiconductor is connected to the source electrode of first metal-oxide-semiconductor, and passes through a first resistor
It is connected to the grid of first metal-oxide-semiconductor, the drain electrode of second metal-oxide-semiconductor is connected to the input terminal of the back-end circuit；
One third metal-oxide-semiconductor, the drain electrode of the third metal-oxide-semiconductor are connected to the grid of second metal-oxide-semiconductor, institute by a second resistance
The grid for stating third metal-oxide-semiconductor is connected to the cathode of the first diode, the source electrode of the third metal-oxide-semiconductor by a 3rd resistor
It is connected to a ground terminal；
One the 4th resistance, the 4th resistance are connected between the 3rd resistor and the source electrode of the third metal-oxide-semiconductor；
One first capacitor, the first capacitor be connected to the third metal-oxide-semiconductor source electrode and the third metal-oxide-semiconductor grid it
Between.
3. a kind of wireless charging emitter according to claim 2, which is characterized in that the second isolated location packet
It includes:
The drain electrode of one the 4th metal-oxide-semiconductor, the 4th metal-oxide-semiconductor is connected to first input interface；
One the 5th metal-oxide-semiconductor, the source electrode of the 5th metal-oxide-semiconductor are connected to the source electrode of the 4th metal-oxide-semiconductor, and the 5th metal-oxide-semiconductor
Source electrode be connected to the grid of the 4th metal-oxide-semiconductor by one the 5th resistance, the drain electrode of the 5th metal-oxide-semiconductor be connected to it is described after
The input terminal of terminal circuit；
One the 6th metal-oxide-semiconductor, the drain electrode of the 6th metal-oxide-semiconductor are connected to the grid of the 5th metal-oxide-semiconductor, institute by one the 6th resistance
The grid for stating the 6th metal-oxide-semiconductor is connected to first input interface, the source electrode connection of the 6th metal-oxide-semiconductor by one the 7th resistance
To the ground terminal；
One the 7th metal-oxide-semiconductor, the drain electrode of the 7th metal-oxide-semiconductor are connected to the grid of the 6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor
Source electrode is connected to the ground terminal, and the grid of the 7th metal-oxide-semiconductor is connected to second diode by one the 8th resistance
Cathode；
One the 9th resistance, the 9th resistance are connected between the grid and the ground terminal of the 7th metal-oxide-semiconductor；
One second capacitor, second capacitor are parallel to the 9th resistance；
1 the tenth resistance, the tenth resistance are connected between the grid and the ground terminal of the 6th metal-oxide-semiconductor；
One third capacitor, the third capacitor are parallel to the tenth resistance.
4. a kind of wireless charging emitter according to claim 3, which is characterized in that the wireless charging isolation circuit
Further include:
One the 4th capacitor, the 4th capacitance connection is between the output end and the ground terminal of second isolated location.
5. a kind of wireless charging emitter according to claim 3, which is characterized in that first input interface is
TYPE-C mouthfuls.
6. a kind of wireless charging emitter according to claim 2, which is characterized in that second input interface is DC
Mouthful.
7. a kind of wireless charging emitter according to claim 1, which is characterized in that further include:
One vehicle-mounted cigarette lighter；
One onboard charger, the power input of the onboard charger connect the power output end of the vehicle-mounted cigarette lighter；
One adapter, the power input of the adapter connect the output end of the wireless charging isolation circuit.
8. a kind of wireless charging emitter according to claim 1, which is characterized in that the back-end circuit includes:
One DC conversion unit, the input terminal of the DC conversion unit connect the output end of first isolated location, and even
The output end for connecing second isolated location, for by the direct current of first input interface or second input interface
Converting direct-current power into alternating-current power；
One wireless charging unit, the input terminal of the wireless charging unit connect the output end of the DC conversion unit；
One coil, the coil are connected to the output end of the wireless charging unit；
One resonant capacitance, the resonant capacitance are connected to the output end of the coil and the wireless charging unit.
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| CN201910889179.3A CN110474441B (en) | 2019-09-19 | 2019-09-19 | Wireless charging transmitting device |
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|---|---|---|---|
| CN201910889179.3A CN110474441B (en) | 2019-09-19 | 2019-09-19 | Wireless charging transmitting device |
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Effective date of registration: 20200110 Address after: Room 801, Building 39, No. 18 Dongchang Road, Suzhou Industrial Park, Jiangsu Province Applicant after: SUZHOU LANPEI WIRELESS COMMUNICATION TECHNOLOGY CO.,LTD. Address before: No. 857 Tiangong Road, Jinshan Industrial Zone, Shanghai, 201500 Applicant before: LANPEI GUANGXIAN (SHANGHAI) ELECTRONIC TECHNOLOGY CO.,LTD. |
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