CN208623397U - Wireless charging device - Google Patents
Wireless charging device Download PDFInfo
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- CN208623397U CN208623397U CN201821214258.1U CN201821214258U CN208623397U CN 208623397 U CN208623397 U CN 208623397U CN 201821214258 U CN201821214258 U CN 201821214258U CN 208623397 U CN208623397 U CN 208623397U
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Abstract
A kind of wireless charging device, comprising: wireless charging emitter and wireless charging receiver；Wireless charging emitter includes radio transmitter, driving circuit, power factor correction circuit and first control circuit, first control circuit is connect with driving circuit and power factor correction circuit respectively, driving circuit is also connect with radio transmitter, driving circuit is also connect with power factor correction circuit, and power factor correction circuit is also used to connect to power supply；Wireless charging receiver includes wireless receiving circuit, the second rectification circuit and second control circuit, second control circuit is connect with the second rectification circuit, second rectification circuit is also connect with wireless receiving circuit, second rectification circuit is also used to connect with battery, wherein, radio transmitter is coupled with wireless receiving circuit.Above-mentioned wireless charging device is adjusted the voltage of driving circuit using circuit of power factor correction in wireless charging emitter, reduced costs, and improves charge efficiency.
Description
Technical field
The utility model relates to wireless charging technical fields, more particularly to a kind of wireless charging device.
Background technique
Wireless charging technology is quickly grown in recent years, is increasingly being applied to electronics and electric device.It is more mature at present
Be magnetic induction technology, be mainly used for tens watts or less low power Portable mobile electronic devices and tens watts to several hectowatts
Electrical equipment.The topological circuit structure that traditional emitter uses is ac-input power supply to be first rectified into DC power supply, then lead to
DC-DC decompression is crossed into low-voltage to coil power supply.This mode is suitable for tens watts of low-power wireless chargings below, if be used in
In tens watts or more of high-power wireless charging, can there are problems that at high cost, low efficiency.
Utility model content
Based on this, it is necessary to be depressured into low-voltage for by DC-DC to coil power supply, used in tens watts or more of big function
On rate wireless charging, can there are problems that at high cost, low efficiency, a kind of wireless charging device is provided.
A kind of wireless charging device, comprising: wireless charging emitter and wireless charging receiver；The wireless charging
Emitter includes radio transmitter, driving circuit, power factor correction circuit and first control circuit, first control
Circuit is connect with the driving circuit and the power factor correction circuit respectively, the driving circuit also with the wireless hair
Transmit-receive radio road connection, the driving circuit are also connect with the power factor correction circuit, and the power factor correction circuit is also used
In connecting to power supply；The wireless charging receiver includes wireless receiving circuit, the second rectification circuit and second control circuit,
The second control circuit is connect with second rectification circuit, and second rectification circuit also connects with the wireless receiving circuit
It connects, second rectification circuit is also used to connect with battery, wherein the radio transmitter and the wireless receiving circuit coupling
It closes.
The radio transmitter includes transmitting coil and first capacitor, the emission lines in one of the embodiments,
Circle connect with the driving circuit, one end of the first capacitor is connect with the transmitting coil, the first capacitor it is another
End is for being grounded.
The wireless charging emitter further includes the first rectification circuit in one of the embodiments, the power because
Plain correcting circuit and the first control circuit are respectively used to connect to power supply by first rectification circuit.
The wireless charging emitter further includes reduction voltage circuit in one of the embodiments, the first control electricity
Road is connect by the reduction voltage circuit with first rectification circuit.
The wireless charging emitter further includes the first protection circuit in one of the embodiments, and described first protects
Protection circuit is connect with the first control circuit.
The wireless receiving circuit includes receiving coil and the second capacitor, the reception line in one of the embodiments,
Circle is connect with second rectification circuit, and the receiving coil also passes through second capacitor and second rectification circuit connects
It connects.
The wireless charging receiver further includes the second protection circuit in one of the embodiments, second control
Circuit processed and the second protection circuit connection, the second protection circuit are also connect with second rectification circuit.
The wireless charging receiver further includes charging control circuit in one of the embodiments, and described second is whole
Current circuit is used to connect with battery by the charging control circuit, the charging control circuit also with the second control circuit
Connection.
Above-mentioned wireless charging device adjusts driving electricity in wireless charging emitter using circuit of power factor correction
The voltage on road, relative to it is traditional using DC-DC decompression at low-voltage power supply mode, simplify circuit, reduce costs, and
Improve charge efficiency.
Detailed description of the invention
Fig. 1 is the circuit module schematic diagram of the wireless charging device of an embodiment of the present invention；
Fig. 2 is the circuit module schematic diagram of the wireless charging emitter of an embodiment of the present invention；
Fig. 3 is the circuit module schematic diagram of the wireless charging receiver of an embodiment of the present invention；
Fig. 4 is the circuit module schematic diagram of the wireless charging emitter of an embodiment of the present invention；
Fig. 5 is the working timing figure of the wireless charging device of an embodiment of the present invention；
Fig. 6 is the circuit diagram of the power factor correction circuit of an embodiment of the present invention；
Fig. 7 is the circuit diagram of the driving circuit of an embodiment of the present invention；
Fig. 8 is the ASK demodulator circuit of an embodiment of the present invention and the circuit diagram of the first protection circuit；
Fig. 9 is the circuit diagram of the reduction voltage circuit of an embodiment of the present invention；
Figure 10 is the circuit diagram of the first control circuit of an embodiment of the present invention；
Figure 11 is the circuit diagram of first rectification circuit of an embodiment of the present invention；
Figure 12 is the circuit diagram of the ASK modulation circuit of an embodiment of the present invention；
Figure 13 is the circuit diagram of the second protection circuit of an embodiment of the present invention；
Figure 14 is the circuit diagram of second rectification circuit of an embodiment of the present invention；
Figure 15 is the circuit diagram of the charging control circuit of an embodiment of the present invention；
Figure 16 is the circuit diagram of the second control circuit of an embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
An embodiment of the present invention discloses a kind of wireless charging receiving device.As shown in Figure 1, wireless charging receiving device
10 include wireless charging emitter 100 and wireless charging receiver 200.
Wireless charging emitter 100 includes radio transmitter 130, driving circuit 120, power factor correction circuit
110 and first control circuit 140.First control circuit 140 connects with driving circuit 120 and power factor correction circuit 110 respectively
It connecing, driving circuit 120 is also connect with radio transmitter 130, and driving circuit 120 is also connect with power factor correction circuit 110,
Power factor correction circuit 110 is also used to connect to power supply.
Wireless charging receiver 200 includes wireless receiving circuit 210, the second rectification circuit 220 and second control circuit
240.Second control circuit 240 is connect with the second rectification circuit 220, and the second rectification circuit 220 also connects with wireless receiving circuit 210
It connects, the second rectification circuit 220 is also used to connect with battery, wherein radio transmitter 130 is coupled with wireless receiving circuit 210.
Above-mentioned wireless charging device adjusts driving electricity in wireless charging emitter using circuit of power factor correction
The voltage on road, relative to it is traditional using DC-DC decompression at low-voltage power supply mode, simplify circuit, reduce costs, and
Improve efficiency.
Wherein, first control circuit 140 is for controlling and coordinating the work that each unit is led the way, it can control power factor
The output voltage of correcting circuit, the also working frequency and duty ratio of adjustable driving circuit, to realize adjusting radio energy
Transmit the size of energy.Power supply is the external power supply provided.Driving circuit 120 is for the stable dc power supply of access to be converted into
High-frequency alternating current source signal, and power amplification is carried out, driving radio transmitter 130 goes out electric energy energy transmitting.Wireless hair
Transmit-receive radio road 130 is for emitting radio energy energy and receiving wireless communication signals.Circuit of power factor correction 110 is for improving
The power factor (PF) of wireless charging emitter entirety, and the unstable DC power supply of access is converted into adjustable stable DC
Power supply, and output voltage may be implemented and adjust according to demand in a certain range, to provide adjustable voltage to driving circuit.This
Power supply is first made into directly by directlying adopt power factor correction circuit come the supply voltage of regulating winding relative to using by sample
Galvanic electricity source, then by DC-DC (a kind of electric energy that the electric energy of a voltage value is become to another voltage value in DC circuit
Device) it is depressured into low-voltage to the conventional method of coil power supply, circuit is simplified, is reduced costs, and improves efficiency.
Wherein, second control circuit 240 is used to control and coordinate the work of each unit circuit, is monitored and controlled entire wireless
The running of charging receiver, including energy acceptance and Charge Management etc. manage the whole of battery charging by charging control circuit
A process.Wireless receiving circuit 210 is for receiving radio energy energy.First rectification circuit 220 is used for wireless receiving circuit
210 AC power sources received are converted into DC power supply.
In one of the embodiments, referring to Fig. 1, radio transmitter 130 includes transmitting coil 131 and first
Capacitor C1, transmitting coil 131 are connect with driving circuit 120, and one end of first capacitor C1 is connect with transmitting coil 131, the first electricity
Hold the other end of C1 for being grounded.In this way, transmitting coil and first capacitor form the first LC resonance circuit, variation can be generated
Emission of magnetic field energy can also incude changing magnetic field and generate induced electromotive force so that radio energy energy transmitting be gone out,
To receive wireless communication signals.
In one of the embodiments, referring to Fig. 1, wireless receiving circuit 210 includes receiving coil 211 and second
Capacitor C2, receiving coil 211 are connect with the second rectification circuit 220 and ASK modulation circuit 250 respectively, and receiving coil 211 is also distinguished
It is connect by the second capacitor C2 with the second rectification circuit 220 and ASK modulation circuit 250.In this way, receiving coil and the second capacitance group
At the second LC resonance circuit, the changing magnetic field of generation can be incuded and generate induced electromotive force, to realize that energy wirelessly passes
It is defeated.
In order to realize the communication of wireless charging device, in one of the embodiments, as shown in Fig. 2, wireless charging emits
Device 100 further includes ASK (amplitude shift keying) demodulator circuit 150, and radio transmitter 130 is also connect with ASK demodulator circuit 150,
ASK demodulator circuit 150 is also connect with first control circuit 140.ASK demodulator circuit connects for demodulating unlimited transmit circuit 130
The wireless communication signals of receipts, and first control circuit 140 is transferred to be communicated.In one of the embodiments, such as Fig. 2
Shown, wireless charging receiver 200 further includes ASK modulation circuit 250, second control circuit 240 and ASK modulation circuit 250
Connection, ASK modulation circuit 250 are also connect with wireless receiving circuit 210.ASK modulation circuit 250 is used for wireless communication signals tune
It makes on wireless receiving circuit 210.
Above-mentioned wireless charging device can both connect power supply transmitting nothing by radio transmitter under the action of driving circuit
Line electric energy energy, and radio energy energy is received by wireless receiving circuit and is charged the battery, it can also be modulated and be believed by ASK
Wireless communication signals number are modulated to and be sent to wireless receiving circuit, and wireless communication letter is received by radio transmitter
Number, and give wireless signals to ASK demodulator circuit, it is and existing to be transferred to first control circuit to be communicated
There is technology to compare, does not need again additional use communication module, reduce costs, simplify product structure, while improving peace
Quan Xing.For example, wireless communication signals can be the confession in the authentication information of battery, configuration information, energy information and receiving module
The relevant informations such as electricity condition, battery status when charging the battery.
In order to convert direct current for alternating current, in one of the embodiments, referring to Fig. 2, wireless charging transmitting
Device 100 further includes the first rectification circuit 160, and power factor correction circuit 110 and first control circuit 140 are respectively used to pass through
First rectification circuit 160 connects to power supply.For example, power supply can be the electric main in gamut, for example, power supply is external city
The alternating current that electricity input and its correlation EMC and safety component are provided.In this way, can be by mains AC by the second rectification circuit
It is converted into direct current.
In order to provide suitable operating voltage to first control circuit, in one of the embodiments, referring to figure
2, wireless charging emitter 100 further includes reduction voltage circuit 170, and first control circuit 140 is whole by reduction voltage circuit 170 and first
Current circuit 160 connects.In this way, DC high-voltage power supply after the first rectifier circuit rectifies can be with decompression transformation at stable low
DC power supply is pressed, first control circuit and its associated peripheral circuits are supplied electricity to.
In order to which the internal circuit to wireless charging emitter is protected, please join again in one of the embodiments,
Fig. 2 is read, wireless charging emitter 100 further includes the first protection circuit 180, the first protection circuit 180 and first control circuit
140 connections.In this way, the first protection circuit can shield to entire transmitting module, including over-voltage, under-voltage, overcurrent, excess temperature
With the protective effects such as short circuit.
Further, referring to Fig. 6, power factor correction circuit 110 includes correcting chip U1 and its peripheral circuit, correction
For connecting with the first rectification circuit 160, the pin 1 of correcting chip U1 is used to connect with driving circuit 120 pin 4 of chip U1
It connects.
Further, referring to Fig. 7, driving circuit 120 includes driving chip U3 and its peripheral circuit, driving chip U3's
Pin 4 is for exporting PWM1EN signal and connecting with first control circuit 140, and the pin 1 of driving chip U3 is for exporting PWM1B
Signal is simultaneously connect with first control circuit 140, and the pin 2 of driving chip U3 is for exporting PWM1A signal and controlling electricity with first
Road 140 connects, and the pin 11 of driving chip U3 with radio transmitter 130 for connecting.
Further, referring to Fig. 8, ASK demodulator circuit 150 includes operational amplifier U7-A and its peripheral circuit, operation
The non-inverting input terminal of amplifier U7-A for connecting with radio transmitter 130, use by the reverse input end of operational amplifier U7-A
It is connect in the output end of operational amplifier U7-A, the output end of operational amplifier U7-A is for exporting COMM_V signal and with the
The connection of one control circuit 140.
Further, referring to Fig. 8, the first protection circuit 180 includes operational amplifier U7-C and its peripheral circuit,
The non-inverting input terminal of operational amplifier U7-C is used to connect with operating voltage, such as operating voltage is 3.3V, operational amplifier U7-
The reverse input end of C with ASK demodulator circuit 150 for connecting, and the output end of operational amplifier U7-C is for exporting COIL_V letter
Number and connect with first control circuit 140.
Further, referring to Fig. 9, reduction voltage circuit 170 includes transformer T1, the first input end 1 of transformer T1 is used for
It is connect with the first rectification circuit 160, for being grounded, the third input terminal 5 of transformer T1 is used for the second input terminal 2 of transformer T1
Ground connection, the 4th input terminal 4 of transformer T1 is for receiving 12V_ENABLE signal and connecting with first control circuit 140, transformation
The first output end 6 of device T1 is for being grounded, and the second output terminal 7 of transformer T1 is for exporting 3.3V voltage and controlling electricity with first
Road 140 connects.
Further, referring to Fig. 10, first control circuit 140 includes the first control chip U8 and its peripheral circuit, the
For the pin 8 of one control chip U8 for receiving COMM_V signal and connecting with ASK demodulator circuit 150, first controls chip U8's
Pin 48 is for receiving COIL_V signal and connecting with the first protection circuit 180, the pin 3/11/13/ of the first control chip U8
35 with the output end of reduction voltage circuit 170 for connecting, and the pin 36 of the first control chip U8 is for the input with reduction voltage circuit 170
End connection.
Further, Figure 11 is please referred to, the first rectification circuit 160 includes rectifier BD1, the first input of rectifier BD1
End with firewire input terminal L for connecting, and the second input terminal of rectifier BD1 with zero curve input terminal N for connecting, rectifier BD1
The first output end for being grounded, the second output terminal of rectifier BD1 is used for and circuit of power factor correction 110 and decompression electricity
Road 170 connects.
In order to be protected to wireless charging receiver, in one of the embodiments, as shown in figure 3, wireless charging
Reception device 200 further includes the second protection circuit 260, and second control circuit 240 is connect with the second protection circuit 260, and second protects
Protection circuit 260 is also connect with the second rectification circuit 220 respectively.In this way, the second protection circuit 260 can connect entire wireless charging
Receiving apparatus shields, including the protective effects such as over-voltage, under-voltage, overcurrent, excessively mild short circuit.
In order to control battery charging, in one of the embodiments, referring to Fig. 3, wireless charging is received
Device 200 further includes charging control circuit 230, and the second rectification circuit 220 is used to connect by charging control circuit 230 and battery
It connects, charging control circuit 230 is also connect with second control circuit 240.In this way, charging control circuit is exported for controlling charging,
It controls whether to charge the battery.
Further, Figure 12 is please referred to, ASK modulation circuit 250 includes triode Q1-A and triode Q1-B, triode
The control electrode of Q1-A and the control electrode of triode Q1-B are used to receive COMM_DRV signal and connect with second control circuit 240,
The first pole of triode Q1-A and the first pole of triode Q1-B are respectively used to connect with wireless receiving circuit 210, triode Q1-
The second pole of A and the second pole of triode Q1-B are respectively used to be grounded.
Further, Figure 13 is please referred to, the second protection circuit 260 includes triode Q3, triode Q4, triode Q6 and three
The first pole of pole pipe Q7, triode Q3, the first pole of triode Q4, the first pole of triode Q6 and triode Q7 the first pole point
Yong Yu not be connect with the second rectification circuit 220, the second pole of triode Q3, the second pole of triode Q4, triode Q6 second
Pole and the second pole of triode Q7 are respectively used to be grounded, and the control electrode of triode Q3 and the control electrode of triode Q4 are respectively used to connect
OVP signal is received simultaneously connect with second control circuit 240, the control electrode of triode Q6 and the control electrode of triode Q7 be respectively used to and
Second control circuit 240 connects.
Further, Figure 14 is please referred to, the second rectification circuit 220 includes rectification chip U2 and its peripheral circuit, rectifies core
For receiving SR_EN signal and connecting with second control circuit 240, the pin 3 of rectification chip U2 is used for and fills the pin 6 of piece U2
Electric control circuit 230 connects.
Further, Figure 15 is please referred to, charging control circuit 230 includes triode Q10, and the control electrode of triode Q10 is used
In receiving CHG_EN signal and connecting with second control circuit 240, the first pole of triode Q10 is used for and the second rectification circuit
220 connections, the second pole of triode Q10 with battery for connecting.
Further, Figure 16 is please referred to, second control circuit 240 includes the second control chip U6 and its peripheral circuit, the
The pin 30 of two control chip U6 is used to connect with the second rectification circuit 220 and the second protection circuit 260, the second control chip U6
Pin 26 for emitting SR_EN signal and connect with the second rectification circuit 220, the pin 25 of the second control chip U6 is used to send out
It penetrates COMM_DRV signal and is connect with ASK modulation circuit 250, the pin 19 of the second control chip U6 is for emitting CHG_EN signal
And connect with charging control circuit 230, the pin 3 of the second control chip U6 is for emitting OVP signal and protecting circuit with second
260 connections.
Above-mentioned wireless charging device when specific works, will be connect by first control circuit with wireless charging receiver
The authentication information of battery, configuration information, the power supply state in energy information and wireless charging receiver, such as to battery
The relevant informations such as battery status when charging, are transferred to ASK modulation circuit, and signal of communication can be modulated to by ASK modulation circuit
On receiving coil, and ASK demodulator circuit is sent to by transmitting coil, ASK demodulator circuit demodulates the signal of communication, and transmits
To first control circuit, the wireless communication between wireless charging receiver and wireless charging sending device, real-time reception are realized
Relevant information.And the wireless charging device of the application, using carrying out wireless communication with interior load modulation technique, magnetic induction energy passes
The transmission of defeated and ASK signal is completed in identical frequency band and circuit, significantly reduces cost.
The control process how wireless charging device realizes wireless energy transfer is further explained with reference to the accompanying drawing.Such as
Shown in Fig. 4, wireless charging is both can be improved in DC supply input to power factor correction circuit 110, power factor correction circuit 110
The power factor of electric emitter, and adjustable DC output voltage.First control circuit 140 detects Active PFC electricity
The output voltage on road 110 feeds back signal to power factor correction circuit 110, and changes its operating point (i.e. frequency and duty
Than), so as to adjust the output voltage of power factor correction circuit 110, reach the required operating voltage of system.First control electricity
Road 140 exports PWM (pulse width modulation) signal to driving circuit 120, and DC power supply is converted into high frequency and handed over by driving circuit 120
Flow 131 emitted energy of power drives transmitting coil.The life that first control circuit 140 is sent according to wireless charging receiver 200
Information is enabled, the frequency or duty ratio of PWM are adjusted, to control the emitted energy size of transmitting coil 131.
In order to improve the safety and reliability of wireless communication, in one of the embodiments, as shown in figure 5, passing through the
One control circuit and second control circuit control wireless energy transfer respectively and the timing of wireless communication is staggered.In this way, in T1
It is interior that wireless charging device is made only to work in the charged state of wireless energy transfer, wireless charging device work is made within the T2 time
Make in wireless communication state, in T1 charged state, wireless charging device only works in energy transmission state, wireless charging transmitting
Device carries out operating point adjustment according to the communication information that wireless charging receiver is sent in a upper T2 wireless communication state,
Adjustment exports satisfactory charging voltage, and in T2 communications status, wireless charging emitter actively reduces the wireless of transmitting
Energy, receiving module turn off the charging to battery and export, and only work avoids under prevailing state in wireless energy transfer
Instability problem is communicated, the safety and reliability of wireless communication is improved.Also, in T2 communications status, wireless charging is connect
Receiving apparatus can also transmit a synchronization signal to wireless charging emitter, and the two will be counted according to synchronization signal and be reset, again
Start timing, to avoid accumulated error, wireless charging receiver and wireless charging emitter can be in T1 charged states
With T2 communications status cyclic switching, it is ensured that wireless charging device reliablely and stablely works.T1 charged state and T2 communications status
Time cycle can adjust according to demand, for example, T1 charged state is 0.5 second, T2 communications status is 35 milliseconds.The above is implemented
Each technical characteristic of example can be combined arbitrarily, for simplicity of description, not to each technical characteristic in above-described embodiment
All possible combination is all described, as long as being all considered to be this however, there is no contradiction in the combination of these technical features
The range that specification is recorded.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. a kind of wireless charging device characterized by comprising wireless charging emitter and wireless charging receiver；
The wireless charging emitter includes radio transmitter, driving circuit, power factor correction circuit and the first control
Circuit, the first control circuit are connect with the driving circuit and the power factor correction circuit respectively, the driving
Circuit is also connect with the radio transmitter, and the driving circuit is also connect with the power factor correction circuit, the function
Rate factor correction circuit is also used to connect to power supply；
The wireless charging receiver includes wireless receiving circuit, the second rectification circuit and second control circuit, and described second
Control circuit is connect with second rectification circuit, and second rectification circuit is also connect with the wireless receiving circuit, described
Second rectification circuit is also used to connect with battery, wherein the radio transmitter is coupled with the wireless receiving circuit.
2. wireless charging device according to claim 1, which is characterized in that the radio transmitter includes transmitting coil
And first capacitor, the transmitting coil are connect with the driving circuit, one end of the first capacitor and the transmitting coil connect
It connects, the other end of the first capacitor is for being grounded.
3. wireless charging device according to claim 1, which is characterized in that the wireless charging emitter further includes
One rectification circuit, the power factor correction circuit and the first control circuit are respectively used to through first rectification circuit
It connects to power supply.
4. wireless charging device according to claim 3, which is characterized in that the wireless charging emitter further includes drop
Volt circuit, the first control circuit are connect by the reduction voltage circuit with first rectification circuit.
5. wireless charging device according to claim 1, which is characterized in that the wireless charging emitter further includes
One protection circuit, the first protection circuit are connect with the first control circuit.
6. wireless charging device according to claim 1, which is characterized in that the wireless receiving circuit includes receiving coil
With the second capacitor, the receiving coil is connect with second rectification circuit, and the receiving coil also passes through second capacitor
It is connect with second rectification circuit.
7. wireless charging device according to claim 1, which is characterized in that the wireless charging receiver further includes
Two protection circuits, the second control circuit and the second protection circuit connection, the second protection circuit is also with described the
The connection of two rectification circuits.
8. wireless charging device according to claim 6, which is characterized in that the wireless charging receiver further includes filling
Electric control circuit, second rectification circuit are used to connect by the charging control circuit with battery, the charge control electricity
Road is also connect with the second control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214258.1U CN208623397U (en) | 2018-07-27 | 2018-07-27 | Wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821214258.1U CN208623397U (en) | 2018-07-27 | 2018-07-27 | Wireless charging device |
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| Publication Number | Publication Date |
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| CN208623397U true CN208623397U (en) | 2019-03-19 |
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| CN201821214258.1U Active CN208623397U (en) | 2018-07-27 | 2018-07-27 | Wireless charging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021092870A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Electronic device, and wireless charging apparatus, system and method |
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2018
- 2018-07-27 CN CN201821214258.1U patent/CN208623397U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021092870A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Electronic device, and wireless charging apparatus, system and method |
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