CN208369293U - A kind of low-power wireless charging unit - Google Patents
A kind of low-power wireless charging unit Download PDFInfo
- Publication number
- CN208369293U CN208369293U CN201821030517.5U CN201821030517U CN208369293U CN 208369293 U CN208369293 U CN 208369293U CN 201821030517 U CN201821030517 U CN 201821030517U CN 208369293 U CN208369293 U CN 208369293U
- Authority
- CN
- China
- Prior art keywords
- module
- pole
- triode
- power
- connect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of low-power wireless charging unit, comprising: electric energy transmitter unit, it include power management module, the Voltage stabilizing module being connect with power management module, the oscillation source module being connect with Voltage stabilizing module and power amplifier module, with oscillation source module and the transmitting coil that connect of power amplifier module, the power management module includes exchange input module and direct current input module, and the exchange input module connects the Voltage stabilizing module by a relay with direct current input module；Electric energy receiving unit comprising with the receiving coil of transmitting coil adaptation, the rectifier bridge being connect with receiving coil, the control circuit module being connect with rectifier bridge and constant-current charge module, the rechargeable battery being all connected with control circuit module and constant-current charge module.The utility model circuit layout is simple, can be realized stablize, effectively wireless charging purpose, and realize the effect of power-off is to realize charge protection after fully charged to rechargeable battery, enable the utility model that there is the extremely strong market competitiveness.
Description
Technical field:
The utility model relates to wireless charging technical fields, refer in particular to a kind of low-power wireless charging unit.
Background technique:
Electromagnetic wave induction principle and relevant alternating current impression technology is utilized in wireless charging technology, is sending and receiving end
A technology for sending and receiving the AC signal of generation induction with corresponding coil to charge.
Wireless charger device is then a kind of device that electric energy transmission is carried out using wireless charging technology, the wireless charging skill
Art makes charger get rid of the limitation of route, is kept completely separate electric appliance and power supply, shows more in terms of safety, flexibility
It is good.For this wireless charging system there are two port, one is transmitting terminal, and one is receiving terminal, transmitting terminal and receiving terminal be all by
Coil is constituted, and transmitting end-coil is connected with circuit and can emit electromagnetic wave, is received after end-coil receives electromagnetic wave and is connected to inside
Circuit generates DC voltage, with the battery charging to electric appliance.
In view of this, the present inventor proposes following technical scheme.
Utility model content:
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of low-power wireless charging unit.
In order to solve the above-mentioned technical problem, the utility model uses following technical proposals: low-power wireless charging dress
Setting includes: electric energy transmitter unit comprising power management module, the Voltage stabilizing module connecting with power management module and pressure stabilizing mould
The oscillation source module and power amplifier module of block connection, the transmitting coil being connect with oscillation source module and power amplifier module, the power management
Module includes exchange input module and direct current input module, and the exchange input module and direct current input module pass through a relay
Device connects the Voltage stabilizing module；Electric energy receiving unit comprising connect with the receiving coil of transmitting coil adaptation, with receiving coil
Rectifier bridge, the control circuit module that is connect with rectifier bridge and constant-current charge module, with control circuit module and constant-current charge
The rechargeable battery that module is all connected with.
Furthermore, in above-mentioned technical proposal, the direct current input module includes 24V battery, the 24V battery and relay
The normally-closed contact of device connects.
Furthermore, in above-mentioned technical proposal, the exchange input module include 220VAC input interface, with
Knife switch S1, the transformer T1 of 220VAC input interface connection, transformer T1 connect the relay by diode D1, D2
1st pin of device.
Furthermore, it in above-mentioned technical proposal, is connected between the 1st pin of the relay and the 2nd pin luminous
Diode (LED) 1, switch S3 and electrolytic capacitor C1.
Furthermore, in above-mentioned technical proposal, the oscillation source module includes being sequentially connected in series NOT gate F1 together, non-
Door F2, NOT gate F3 and the resistance R1 and adjustable resistance RP1 that are parallel to the both ends NOT gate F1, NOT gate F1, NOT gate F2 constitute square wave
Oscillator, and it is parallel with capacitor C4 on NOT gate F1, NOT gate F2, the NOT gate F3 connection Voltage stabilizing module and power amplifier module.
Furthermore, in above-mentioned technical proposal, the power amplifier module includes VMOS power tube, the G of the VMOS power tube
Connect after pole connection resistance R2 with the NOT gate F3, the pole S of VMOS power tube ground connection, the pole G and the pole S of the VMOS power tube it
Between be connected with zener diode D3, the pole D of the VMOS power tube connects the transmitting coil.
Furthermore, in above-mentioned technical proposal, the output end of the rectifier bridge is also connected with electrolytic capacitor C9 and capacitor
C10。
Furthermore, in above-mentioned technical proposal, the constant-current charge module includes to connect with rectifier bridge and mutually go here and there
The pole B of resistance R6, resistance R7, the triode Q5 of connection, triode Q5 connect the control circuit module, the E of triode Q5
Pole connects resistance R7, the pole the C connection of the triode Q5 rechargeable battery.
Furthermore, in above-mentioned technical proposal, the control circuit module includes triode Q3, triode Q4 and fortune
Chip IC 3 is put, connects the rectifier bridge after the pole the B connection resistance R5 of triode Q3, the pole C of triode Q3 connects green light
It is grounded after LED, the pole E of triode Q3 connects the rectifier bridge, connects amplifier core after the pole the B connection resistance R8 of triode Q3
The pole C of connecting triode Q4 after the pole the E connection red-light LED of piece IC3, triode Q3, the pole the E ground connection of triode Q4, this three
Amplifier chip IC3, the amplifier chip IC3 connection rechargeable battery are connected after the pole the B connection resistance R10 of pole pipe Q4.
Furthermore, in above-mentioned technical proposal, the output end of the rectifier bridge is also connected with resistance R4, adjustable resistance
RP2 and controllable accurate pressure stabilizing source chip TL431, the resistance R4 connection amplifier chip IC3.
After adopting the above technical scheme, the utility model have the following beneficial effects: compared with prior art it is practical
New-type circuit layout is simple, can be realized stablize, effectively wireless charging purpose, and realize after fully charged to rechargeable battery disconnected
The effect of electricity is to realize charge protection enables the utility model have the extremely strong market competitiveness.
Detailed description of the invention:
Fig. 1 is the circuit diagram of electric energy transmitter unit in the utility model；
Fig. 2 is the circuit diagram of electric energy receiving unit in the utility model.
Specific embodiment:
The present invention will be further described with attached drawing combined with specific embodiments below.
As shown in FIGS. 1 and 2 be a kind of low-power wireless charging unit comprising: electric energy transmitter unit 1 and with the electric energy send out
Penetrate the electric energy receiving unit 2 of the adaptation of unit 1.
The electric energy transmitter unit 1 include power management module 11, connect with power management module 11 Voltage stabilizing module 12,
The oscillation source module 13 and power amplifier module 14 that are connect with Voltage stabilizing module 12, the hair being connect with oscillation source module 13 and power amplifier module 14
Ray circle 15.
The power management module 11 includes exchange input module 111 and direct current input module 112, and the exchange inputs
Module 111 and direct current input module 112 pass through a relay 113 and connect the Voltage stabilizing module 12.The direct current input module 112
Including 24V battery, which connect with the normally-closed contact of relay 113.The exchange input module 111 includes
220VAC input interface, the knife switch S1 connecting with 220VAC input interface, transformer T1, transformer T1 pass through diode
D1, D2 connect the 1st pin of the relay 113.It is connected between the 1st pin and the 2nd pin of the relay 113 luminous
Diode (LED) 1, switch S3 and electrolytic capacitor C1, electrolytic capacitor C1 and diode D1, D2 can achieve the function of rectifying and wave-filtering
Effect.That is, there are two types of 1 power supplies of electric energy transmitter unit: 220V exchange and 24V DC power supply, by relay 113
Selection.According to exchange preferential principle, the normally-closed contact of relay is connect with 24V DC power supply (battery BT1).Under normal circumstances
S3 is in an ON state.
The oscillation source module 13 includes being sequentially connected in series NOT gate F1 together, NOT gate F2, NOT gate F3 and being parallel to non-
The resistance R1 and adjustable resistance RP1 at the both ends door F1, NOT gate F1, NOT gate F2 constitute square-wave oscillator, and NOT gate F1, NOT gate F2
On be parallel with capacitor C4, the NOT gate F3 connection Voltage stabilizing module 12 and power amplifier module 14.
The power amplifier module 14 include VMOS power tube, the VMOS power tube the pole G connection resistance R2 after with the NOT gate
F3 connection, the pole the S ground connection of the VMOS power tube, is connected with zener diode D3 between the pole G and the pole S of the VMOS power tube, should
The pole D of VMOS power tube connects the transmitting coil 15.
1 working principle of electric energy transmitter unit: when there is Alternating Current Power Supply, the about 26V direct current after rectifying and wave-filtering makes relay
Device 113 is attracted, and electric energy transmitter unit just works in ac power supply method, at this point, direct current input module 112 is logical including 24V battery
It crosses relay 113 and the entire circuit of electric energy transmitter unit 1 to disconnect, while 1 luminescence display of Light-emitting diode LED this state.Through
+ 24V the direct current of relay selection is mainly transmitting coil power supply, in addition, being oscillation source module after the decompression of Voltage stabilizing module 12
13 power supplies, to guarantee that the movement of relay does not influence the steady operation of electric energy transmitter unit 1, the capacity of capacitor C3 be cannot be less than
2200uF, what the Wireless transceiver of electric energy was realized indeed through the mutual inductance effect of transmitting coil and receiving coil, emit here
Coil and receiving coil constitute the former and deputy sideline circle of the transformer without magnetic core.To guarantee enough power and as high as possible
Efficiency, higher modulating frequency should be selected, while to consider the high frequency characteristics of device, more be closed through experimental selection 1.6MHZ
It is suitable.Square-wave oscillator is made of NOT gate F1 and NOT gate F2, generates the square wave of about 1.6MHZ, through NOT gate F3 buffering and shaping, is obtained
The square wave of amplitude about 11V motivates VMOS power tube IRF640, it is sufficient to and make its work in switch state, it is as high as possible to guarantee
Transfer efficiency.To guarantee VMOS power tube IRF640, with the resonance frequency one in transmitting coil and the circuit capacitor C8 to cause.It can will be electric
Holding C4 and is written as 100PF, R1 is set to 3K thus, and seals in adjustable resistance RP1, in resonant state, although excitation is square wave, transmitting
Voltage in coil is same frequency sine-wave, it can be seen that, this part is actually a frequency converter, it turns the sine of 50HZ
Become the sine wave of 1.6MHZ.
The electric energy receiving unit 2 includes connecting with the receiving coil 21 of the adaptation of transmitting coil 15, with receiving coil 21
Rectifier bridge 22, the control circuit module 23 being connect with rectifier bridge 22 and constant-current charge module 24, with control circuit module 23 and
The rechargeable battery 25 that constant-current charge module 24 is all connected with.Under normal circumstances, receiving coil 21 is with transmitting coil 15 at a distance of only several
Centimetre, and close to coaxially, it can get higher efficiency of transmission at this time.
The output end of the rectifier bridge 22 is also connected with electrolytic capacitor C9 and capacitor C10, electrolytic capacitor C9 and capacitor C10
Has effects that filtering.
The constant-current charge module 24 includes the resistance R6, resistance R7, three poles for connecting and being serially connected with rectifier bridge 22
The pole B of pipe Q5, triode Q5 connect the control circuit module 23, and the pole E of triode Q5 connects resistance R7, the triode
The pole the C connection of the Q5 rechargeable battery 25.
The control circuit module 23 includes triode Q3, triode Q4 and amplifier chip IC3, the B of triode Q3
The rectifier bridge 22 is connected after pole connection resistance R5, is grounded after the pole the C connection green light LED of triode Q3, the E of triode Q3
Pole connects the rectifier bridge 22, connects amplifier chip IC3, the pole E of triode Q3 after the pole the B connection resistance R8 of triode Q3
The pole C of connecting triode Q4 after connection red-light LED, the pole the E ground connection of triode Q4, the pole B of triode Q4 connects resistance R10
Amplifier chip IC3, the amplifier chip IC3 connection rechargeable battery 25 are connected afterwards.
The output end of the rectifier bridge 22 is also connected with resistance R4, adjustable resistance RP2 and controllable accurate pressure stabilizing source chip
TL431, the resistance R4 connection amplifier chip IC3.
When the electric energy receiving unit 2 works, the sinusoidal voltage virtual value for the 1.6MHZ that receiving coil incudes is about
16V, rectified bridge 22, electrolytic capacitor C9 and capacitor C10 rectification and filtering obtain about 20V direct current, as control circuit module 23
Power supply.Resistance R4, adjustable resistance RP2 and controllable accurate pressure stabilizing source chip TL431 constitute Precision reference voltage 4.15V, and lead to
3 foot of non-inverting input terminal that resistance R12 meets amplifier chip IC3 is crossed, when the inverting input terminal 2 of amplifier chip IC3 is lower than 4.15V,
On the one hand the high potential of amplifier chip IC3 output makes triode Q4 saturation to obtain the stable electricity of about 2V at red-light LED both ends
Pressure, triode Q5 and resistance R6, resistance R7 just constitute constant-current charge module 24 accordingly, and another aspect resistance R5 cuts triode Q3
Only, green light LED does not work.When rechargeable battery is full of (being slightly larger than 4.15V), the inverting input terminal 2 of amplifier chip IC3 is slightly above
4.15V.Amplifier chip IC3 just exports low potential, at this time triode Q4 end, triode Q5 because cannot get bias current completely mostly due to
The effect of ending, thus stopping charging, reach charge protection.The low potential of amplifier chip IC3 output simultaneously makes three through resistance R8
Pole pipe Q3 conducting is lighted green light LED and is indicated as full state.
In conclusion the utility model circuit layout is simple, can be realized stablize, effectively wireless charging purpose, and
The effect of power-off is to realize charge protection is realized after fully charged to rechargeable battery, enables the utility model that there is extremely strong market competition
Power.
It certainly, is not to limit the utility model and implement the foregoing is merely specific embodiment of the utility model
Range, all equivalent change or modifications done according to structure, feature and principle described in present utility model application the scope of the patents, should all wrap
It includes in present utility model application the scope of the patents.
Claims (10)
1. a kind of low-power wireless charging unit, it is characterised in that: comprising:
Electric energy transmitter unit (1) comprising power management module (11), the Voltage stabilizing module being connect with power management module (11)
(12), the oscillation source module (13) and power amplifier module (14) and oscillation source module (13) and power amplifier being connect with Voltage stabilizing module (12)
The transmitting coil (15) of module (14) connection, the power management module (11) include that exchange input module (111) and direct current are defeated
Enter module (112), and the exchange input module (111) and direct current input module (112) pass through described in a relay (113) connection
Voltage stabilizing module (12)；
Electric energy receiving unit (2) comprising connect with the receiving coil (21) of transmitting coil (15) adaptation, with receiving coil (21)
Rectifier bridge (22), the control circuit module (23) that is connect with rectifier bridge (22) and constant-current charge module (24), with control electricity
The rechargeable battery (25) that road module (23) and constant-current charge module (24) are all connected with.
2. a kind of low-power wireless charging unit according to claim 1, it is characterised in that: the direct current input module
It (112) include 24V battery, which connect with the normally-closed contact of relay (113).
3. a kind of low-power wireless charging unit according to claim 1, it is characterised in that: the exchange input module
(111) knife switch S1, the transformer T1 for including 220VAC input interface, being connect with 220VAC input interface, the transformer
T1 connects the 1st pin of the relay (113) by diode D1, D2.
4. a kind of low-power wireless charging unit according to claim 3, it is characterised in that: the relay (113)
Light-emitting diode LED 1, switch S3 and electrolytic capacitor C1 are connected between 1st pin and the 2nd pin.
5. a kind of low-power wireless charging unit according to claim 1, it is characterised in that: the oscillation source module (13)
Including being sequentially connected in series NOT gate F1 together, NOT gate F2, NOT gate F3 and the resistance R1 and adjustable electric that are parallel to the both ends NOT gate F1
RP1 is hindered, NOT gate F1, NOT gate F2 constitute square-wave oscillator, and are parallel with capacitor C4 on NOT gate F1, NOT gate F2, NOT gate F3
Connect the Voltage stabilizing module (12) and power amplifier module (14).
6. a kind of low-power wireless charging unit according to claim 5, it is characterised in that: power amplifier module (14) packet
VMOS power tube is included, is connect after the pole the G connection resistance R2 of the VMOS power tube with the NOT gate F3, the pole S of the VMOS power tube
Ground connection, is connected with zener diode D3 between the pole G and the pole S of the VMOS power tube, and the pole D of the VMOS power tube connects the hair
Ray circle (15).
7. a kind of low-power wireless charging unit according to claim 1, it is characterised in that: the rectifier bridge (22) it is defeated
Outlet is also connected with electrolytic capacitor C9 and capacitor C10.
8. a kind of low-power wireless charging unit described in -7 any one according to claim 1, it is characterised in that: the constant current
Charging module (24) includes the resistance R6, resistance R7, triode Q5 for connecting and being serially connected with rectifier bridge (22), the triode
The pole B of Q5 connects the control circuit module (23), and the pole E of triode Q5 connects resistance R7, the pole the C connection of triode Q5
The rechargeable battery (25).
9. a kind of low-power wireless charging unit according to claim 8, it is characterised in that: the control circuit module
It (23) include triode Q3, triode Q4 and amplifier chip IC3, after the pole the B connection resistance R5 of triode Q3 described in connection
Rectifier bridge (22), the pole C of triode Q3 are grounded after connecting green light LED, and the pole E of triode Q3 connects the rectifier bridge
(22), amplifier chip IC3 is connected after the pole the B connection resistance R8 of triode Q3, after the pole E of triode Q3 connects red-light LED
The pole C of connecting triode Q4, the pole the E ground connection of triode Q4, the pole B of triode Q4 connects amplifier core after connecting resistance R10
Piece IC3, the amplifier chip IC3 connection rechargeable battery (25).
10. a kind of low-power wireless charging unit according to claim 9, it is characterised in that: the rectifier bridge (22)
Output end is also connected with resistance R4, adjustable resistance RP2 and controllable accurate pressure stabilizing source chip TL431, the resistance R4 connection fortune
Put chip IC 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821030517.5U CN208369293U (en) | 2018-06-30 | 2018-06-30 | A kind of low-power wireless charging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821030517.5U CN208369293U (en) | 2018-06-30 | 2018-06-30 | A kind of low-power wireless charging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208369293U true CN208369293U (en) | 2019-01-11 |
Family
ID=64927886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821030517.5U Active CN208369293U (en) | 2018-06-30 | 2018-06-30 | A kind of low-power wireless charging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208369293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641301A (en) * | 2019-10-29 | 2020-01-03 | 陕西科技大学 | Household type electric automobile intelligent charging device based on wireless charging |
-
2018
- 2018-06-30 CN CN201821030517.5U patent/CN208369293U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641301A (en) * | 2019-10-29 | 2020-01-03 | 陕西科技大学 | Household type electric automobile intelligent charging device based on wireless charging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104158305B (en) | Energy and information synchronous transmission system based on self-adaptive magnetic coupling resonance matching | |
| CN201846504U (en) | Remotely controllable LED (light-emitting diode) street lamp control circuit based on ZIGBEE wireless communication | |
| CN203705574U (en) | Magnetic field detection principle-based transformer on-line monitoring early warning device | |
| CN107689691A (en) | A kind of magnetic resonance type wireless charging sensor network nodes design method | |
| CN201830516U (en) | Control circuit of light emitting diode (LED) street lamp capable of being regulated and controlled remotely based on electric carrier communication | |
| CN208369293U (en) | A kind of low-power wireless charging unit | |
| CN103220856B (en) | Self-adapting light emitting diode (LED) driving power circuit | |
| CN209705930U (en) | A kind of wisdom LED garden lamp | |
| CN204272439U (en) | A kind of LED illumination lamp based on light signal transmission | |
| CN206452186U (en) | A kind of system for improving wireless power transmission efficiency | |
| CN204361765U (en) | A kind of intelligent watch wireless charging system | |
| CN209169994U (en) | A kind of Multi-functional water fog fan circuit | |
| CN204559247U (en) | Magnetic coupling dual-mode wireless electric energy transmitting device | |
| CN204517512U (en) | The resonant wireless power transmission earphone of magnetic coupling | |
| CN110087363A (en) | A kind of Wireless Light modulating toning driving circuit of compatible WIFI and Bluetooth function | |
| CN106953808A (en) | The router of employing wireless charging | |
| CN201995171U (en) | LED driving power supply with load tracking and frequency reducing functions | |
| CN205595905U (en) | Difunctional adjustable wireless power transmission device | |
| CN108879982A (en) | Bistable state primary side constant current magnetic induction couples wireless charging device and its application method | |
| CN204928377U (en) | Wireless electric energy transmission system | |
| CN204206576U (en) | A kind of LED drive power circuit | |
| CN208539639U (en) | A kind of mobile phone wireless charger system based on electromagnetic induction | |
| CN203967985U (en) | LC series connection self-oscillation voltage conversion circuit | |
| CN107394903A (en) | A kind of straight ripple wireless charging system | |
| CN208989209U (en) | The control circuit of wireless charging type electric toothbrush |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |