CN207234532U - A kind of wireless charging system of electric automobile - Google Patents
A kind of wireless charging system of electric automobile Download PDFInfo
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- CN207234532U CN207234532U CN201721293973.4U CN201721293973U CN207234532U CN 207234532 U CN207234532 U CN 207234532U CN 201721293973 U CN201721293973 U CN 201721293973U CN 207234532 U CN207234532 U CN 207234532U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a kind of wireless charging system of electric automobile, including the electric energy reception device being arranged on the wireless launcher and automobile on road guard；Wireless launcher includes transmitting coil, radio transmitter and external power supply, transmitting coil is connected with radio transmitter, radio transmitter is connected with external power supply, electric energy reception device includes receiving coil, current rectifying and wave filtering circuit, booster circuit and automobile storage battery, receiving coil is connected with current rectifying and wave filtering circuit, current rectifying and wave filtering circuit is connected with booster circuit, the booster circuit is connected with the automobile storage battery, and the receiving coil is connected by electromagnetic coupled with the transmitting coil and carries out energy acceptance；Its effect is：By the way that wireless launcher is arranged on road guard, electric energy reception device is arranged on vehicle, and the road for having built completion need not be destroyed when realizing the mobile charging to vehicle, and installing, easy for installation flexible, management easy to repair.
Description
Technical field
The utility model belongs to wireless charging technical field, and in particular to a kind of wireless charging system of electric automobile.
Background technology
New-energy automobile is current burning hot topic, conform to environmentally friendly trend and state's laws trend is fast-developing.New energy
Electric automobile belongs to for current most popular new-energy automobile in the automobile of source.Since electric automobile needs to charge to increase in continuation of the journey
Journey, therefore nowadays there are many electric automobile charging piles.Including wired charging charging pile and wireless charging charging pile, its
In electric automobile wireless charging scheme, be also limited to energy supply wiring board being embedded under road, or road surface be placed in, in automobile chassis
Fill radio energy receiver.But because scheme needs to rebuild road for this, result in somewhat expensive can not implement on a large scale,
The problem of charging when can not realize automobile movement；Or electric automobile can only be laid with charging panel in locality, can not also allow vapour
Car in the process of moving charge by side.
The content of the invention
To solve the above-mentioned problems, it is existing to overcome the utility model proposes a kind of wireless charging system of electric automobile
The defects of mobile charging cannot be carried out in technology.
The technical solution that the utility model is taken is：A kind of wireless charging system of electric automobile, including it is arranged on road
Electric energy reception device on wireless launcher and automobile on guardrail；The wireless launcher includes transmitting coil, wireless
Radiating circuit and external power supply, the transmitting coil are connected with the radio transmitter, the radio transmitter and outside
Power supply connects, and the electric energy reception device includes receiving coil, current rectifying and wave filtering circuit, booster circuit and automobile storage battery, described
Receiving coil is connected with the current rectifying and wave filtering circuit, and the current rectifying and wave filtering circuit is connected with the booster circuit, the boosting electricity
Road is connected with the automobile storage battery, and the receiving coil is connected progress energy by electromagnetic coupled with the transmitting coil and connects
Receive.
Preferably, the receiving coil in the electric energy reception device is positioned close on the side car door of road guard.
Preferably, the transmitting coil and receiving coil setting perpendicular to the ground, so set and add energy
The effective area of reception, improves the efficiency of energy exchange.
Preferably, the radio transmitter includes power supply VCC, the first potentiometer J1, the first potentiometer J2, first resistor
R1, the first diode D1, the first capacitance C1, the second capacitance C2, the 3rd capacitance C3, the 4th capacitance C4, the 5th capacitance C5, first
Metal-oxide-semiconductor Q1 and NE555 chip, power supply VCC is connected with the second pin of the first potentiometer J1 and the 3rd pin respectively, described
The second pin with the second potentiometer J2, the second potentiometer J2 the 3rd draw the first pin of first potentiometer J1 respectively
Foot is connected with the 7th pin of the NE555 chips, and the first pin of the second potentiometer J2 passes through the first capacitance C1
Ground connection, the first pin of the second potentiometer J2 are also connected with the second pin of the NE555 chips and the 6th pin respectively,
The power supply VCC is connected after also being concatenated with the first resistor R1 with the anode of the first diode D1, the NE555 chips
The 3rd pin be connected with the cathode of the first diode D1, the 3rd pin of the NE555 chips also with the first MOS
The grid connection of pipe Q1, the 5th pin of the NE555 chips after the second capacitance C2 by being grounded, the NE555 chips
The 8th pin by being grounded after the 3rd capacitance C3, the 8th pin of the NE555 chips also with the transmitting coil
One end connects, and the other end of the transmitting coil is connected with the drain electrode of the first metal-oxide-semiconductor Q1, the source of the first metal-oxide-semiconductor Q1
Pole is grounded, and the 4th capacitance C4 and the 5th capacitance C5 is connected in parallel on the both ends of the transmitting coil respectively.
Preferably, the current rectifying and wave filtering circuit includes rectifier bridge BR1, the 6th capacitance C6, the 7th capacitance C7 and the 8th capacitance
C8, the rectifier bridge BR1 include the second diode D2, the 3rd diode D3, the 4th diode D4 and the 5th diode D5, described
Ac input end of the both ends of receiving coil respectively with the rectifier bridge BR1 is connected, and the 6th capacitance C6 is connected in parallel on described
The both ends of seven capacitance C7, the 7th capacitance C7 are connected in parallel on the both ends of the receiving coil, the cathode output of the rectifier bridge BR1
End is connected with one end of the 8th capacitance C8, and the cathode output end of the rectifier bridge BR1 is another with the 8th capacitance C8's
End connection.
Preferably, the booster circuit includes the 9th capacitance C9, the tenth capacitance C10, the 11st capacitance C11, the 12nd electricity
Hold the 12, the 6th diode D6, the 7th diode D7, second resistance R2,3rd resistor R3, the 4th resistance R4, the first inductance L1, the
Two inductance L2 and boost chip LM2577；The 3rd resistor R3 is adjustable resistance, the cathode of the 6th diode D6 and institute
One end connection of the first inductance L1 is stated, the plus earth of the 6th diode D6, the both ends of the 6th diode D6 are also simultaneously
It is associated with the 9th capacitance C9, the 5th pin of one end of the first inductance L1 also with the boost chip LM2577 is connected,
The other end of the first inductance L1 is connected with the 4th pin of the boost chip LM2577, and the first inductance L1's is another
Hold anode also with the 7th diode D7 be connected, the cathode of the 7th diode D7 concatenate after the second inductance L2 and
The positive terminal connection of automobile storage battery, the negative pole end ground connection of automobile storage battery, the cathode of the 7th diode D7 also with it is described
The centre cap connection of 3rd resistor R3, the first pin of the boost chip LM2577 successively with the second resistance R2 and the
It is grounded after ten capacitance C10 connections, the second pin of the boost chip LM2577 is connected with one end of the 3rd resistor R3, institute
State the one end of one end of 3rd resistor R3 also with the 4th resistance R4 to be connected, the other end ground connection of the 4th resistance R4, institute
The other end for stating 3rd resistor R3 is grounded by the 11st capacitance C11, the positive terminal and negative pole end of the automobile storage battery
Between be also parallel with the 12nd capacitance 12.
Preferably, the second diode D2, the 3rd diode D3, the 4th diode D4 and the 5th diode D5 are used
Schottky diode.
Using above-mentioned technical proposal, has the following advantages：The utility model provides a kind of wireless charging system of electric automobile
System, by the way that wireless launcher is arranged on road guard, electric energy reception device is arranged on vehicle, realizes the nothing to vehicle
Micro USB electricity, and the road for having built completion need not be destroyed during installation, easy for installation flexible, management easy to repair.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the application state schematic diagram of the utility model；
Fig. 3 is the part-structure schematic diagram of wireless launcher in the utility model；
Fig. 4 is the part-structure schematic diagram of electric energy reception device in the utility model；
Fig. 5 is the structure diagram of radio transmitter in the utility model；
Fig. 6 is the structure diagram of current rectifying and wave filtering circuit in the utility model；
Fig. 7 is the structure diagram of booster circuit in the utility model.
Embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail, description here is not meant that corresponding to all of the instantiation stated in embodiment
Theme all refer in the claims.
Referring to figs. 1 to shown in Fig. 4, a kind of wireless charging system of electric automobile, including the nothing being arranged on road guard 1
Electric energy reception device on line emitter and automobile 2；The wireless launcher includes transmitting coil 11, radio transmitter
12 and external power supply 13, the transmitting coil 11 be connected with the radio transmitter 12, the radio transmitter 12 with it is outer
Portion's power supply 13 connects, and the electric energy reception device includes receiving coil 21, current rectifying and wave filtering circuit 22, booster circuit 23 and automobile and stores
Battery 24, the receiving coil 21 are connected with the current rectifying and wave filtering circuit 22, the current rectifying and wave filtering circuit 22 and the boosting electricity
Road 23 connects, and the booster circuit 23 is connected with the automobile storage battery 24, the receiving coil 21 and the transmitting coil 11
Connected by electromagnetic coupled and carry out energy acceptance.
In the present embodiment, road guard 1 is equipped with multiple wireless launchers, and is evenly distributed on the road guard
In 1 interlayer 14, so set and ensure that the automobile with being travelled on road is carried out as effectively connection and signal strength, and send out
It is attached between ray circle 11 by way of in parallel, so setting will not influence other because some coil breaks down
The work of coil, improves the reliability of its work, and the receiving coil 21 uses identical material with the transmitting coil 11
Material, the turn ratio of identical coil, the car door of automobile 2 are included 5 on the inside of door outside 3, interlayer 4 and car door, electric energy reception device
In receiving coil 21 be arranged on interlayer 4, and close to road guard side car door on, also can use in each of automobile 2
Wireless launcher is respectively provided with car door, such automobile 2 is during traveling, with regard to that can carry out continual charging, and this
Utility model mounting means is flexible, it is not necessary to completed road is destroyed, using promoting the use of.
Further, in order to add the effective area of energy acceptance, the efficiency of energy exchange, the emission lines are improved
Circle and receiving coil setting perpendicular to the ground.
Further, refering to what is shown in Fig. 5, the radio transmitter includes power supply VCC, the first potentiometer J1, the first electricity
Position device J2, first resistor R1, the first diode D1, the first capacitance C1, the second capacitance C2, the 3rd capacitance C3, the 4th capacitance C4, the
Five capacitance C5, the first metal-oxide-semiconductor Q1 and NE555 chip, power supply VCC second pins and the 3rd with the first potentiometer J1 respectively
Pin connects, the first pin of the first potentiometer J1 second pin with the second potentiometer J2, described second respectively
The 3rd pins of potentiometer J2 are connected with the 7th pin of the NE555 chips, and the first pin of the second potentiometer J2 passes through
First capacitance C1 ground connection, the first pin of the second potentiometer J2 also second pin with the NE555 chips respectively
Connected with the 6th pin, the power supply VCC connects after also being concatenated with the first resistor R1 with the anode of the first diode D1
Connect, the 3rd pin of the NE555 chips is connected with the cathode of the first diode D1, and the 3rd of the NE555 chips draws
Grid of the foot also with the first metal-oxide-semiconductor Q1 is connected, and the 5th pin of the NE555 chips is followed by by the second capacitance C2
Ground, the 8th pin of the NE555 chips after the 3rd capacitance C3 by being grounded, and the 8th pin of the NE555 chips is also
It is connected with one end of the transmitting coil, the other end of the transmitting coil is connected with the drain electrode of the first metal-oxide-semiconductor Q1, described
The source electrode ground connection of first metal-oxide-semiconductor Q1, the 4th capacitance C4 and the 5th capacitance C5 are connected in parallel on the both ends of the transmitting coil respectively.
In the present embodiment, the first diode D1 is light emitting diode, easy to indicate whether radiating circuit works normally, just
Often during work, the first metal-oxide-semiconductor Q1 is connected, and the first diode D1 is lighted, and first metal-oxide-semiconductor uses N-channel MOS pipe, and the 3rd
Capacitance C3 uses electrolytic capacitor, and the 4th capacitance C4 and the 5th capacitance C5 use CBB electric capacity.
Further, refering to what is shown in Fig. 6, the current rectifying and wave filtering circuit includes rectifier bridge BR1, the 6th capacitance C6, the 7th electricity
Hold C7 and the 8th capacitance C8, the rectifier bridge BR1 includes the second diode D2, the 3rd diode D3, the 4th diode D4 and the
Five diode D5, the ac input end of the both ends of the receiving coil respectively with the rectifier bridge BR1 are connected, the 6th capacitance
C6 is connected in parallel on the both ends of the 7th capacitance C7, and the 7th capacitance C7 is connected in parallel on the both ends of the receiving coil, the rectification
The cathode output end of bridge BR1 is connected with one end of the 8th capacitance C8, the cathode output end of the rectifier bridge BR1 and described the
The other end connection of eight capacitance C8.
Further, the second diode D2, the 3rd diode D3, the 4th diode D4 and the 5th diode D5 are adopted
With Schottky diode, its is low in energy consumption, and reverse recovery time is short, more excellent than traditional diode behavior.
Further, refering to what is shown in Fig. 7, the booster circuit includes the 9th capacitance C9, the tenth capacitance C10, the 11st electricity
Hold C11, the 12nd capacitance 12, the 6th diode D6, the 7th diode D7, second resistance R2,3rd resistor R3, the 4th resistance
R4, the first inductance L1, the second inductance L2 and boost chip LM2577；The 3rd resistor R3 is adjustable resistance, the described 6th 2
The cathode of pole pipe D6 is connected with one end of the first inductance L1, the plus earth of the 6th diode D6, and the described 6th 2
The both ends of pole pipe D6 are also parallel with the 9th capacitance C9, one end of the first inductance L1 also with the boost chip LM2577
The 5th pin connection, the other end of the first inductance L1 is connected with the 4th pin of the boost chip LM2577, described
Anode of the other end of first inductance L1 also with the 7th diode D7 is connected, the cathode concatenation institute of the 7th diode D7
It is connected after stating the second inductance L2 with the positive terminal of automobile storage battery, the negative pole end ground connection of automobile storage battery, the 7th diode
Centre cap of the cathode of D7 also with the 3rd resistor R3 is connected, the first pin of the boost chip LM2577 successively with institute
It is grounded after stating second resistance R2 and the tenth capacitance C10 connections, the second pin of the boost chip LM2577 and the described 3rd electricity
One end connection of R3 is hindered, the one end of one end of the 3rd resistor R3 also with the 4th resistance R4 is connected, the 4th resistance
The other end ground connection of R4, the other end of the 3rd resistor R3 are grounded by the 11st capacitance C11, the automobile storage battery
Positive terminal and negative pole end between be also parallel with the 12nd capacitance 12.
In the present embodiment, the 9th capacitance C9, the 11st capacitance C11 and the 12nd capacitance 12 are using electrolysis electricity
Hold.
Here, it is to be noted that, the function that the utility model is related to, algorithm, method etc. are only the routine of the prior art
Adaptability application.Therefore, improvement of the utility model for the prior art, the connection relation being substantially between hardware, rather than
For function, algorithm, method in itself, namely although the utility model is related to some functions, algorithm, method, but and not comprising pair
The improvement that function, algorithm, method propose in itself.Description of the utility model for function, algorithm, method, is in order to more preferable
Illustrate the utility model, to be better understood from the utility model.
Finally it should be noted that foregoing description is the preferred embodiment of the utility model, the ordinary skill people of this area
Member on the premise of without prejudice to the utility model aims and claim, can make a variety of under the enlightenment of the utility model
Similar expression, such conversion are each fallen within the scope of protection of the utility model.
Claims (7)
1. a kind of wireless charging system of electric automobile, it is characterised in that including the wireless transmission dress being arranged on road guard
Put and the electric energy reception device on automobile；The wireless launcher includes transmitting coil, radio transmitter and external power supply,
The transmitting coil is connected with the radio transmitter, and the radio transmitter is connected with external power supply, and the electric energy connects
Receiving apparatus includes receiving coil, current rectifying and wave filtering circuit, booster circuit and automobile storage battery, and the receiving coil is filtered with the rectification
Wave circuit connects, and the current rectifying and wave filtering circuit is connected with the booster circuit, and the booster circuit connects with the automobile storage battery
Connect, the receiving coil is connected by electromagnetic coupled with the transmitting coil and carries out energy acceptance.
2. the wireless charging system of a kind of electric automobile according to claim 1, it is characterised in that the electric energy receives dress
The receiving coil put is positioned close on the side car door of road guard.
A kind of 3. wireless charging system of electric automobile according to claim 2, it is characterised in that the transmitting coil and
Receiving coil setting perpendicular to the ground.
A kind of 4. wireless charging system of electric automobile according to claim 3, it is characterised in that the wireless transmission electricity
Road includes power supply VCC, the first potentiometer J1, the first potentiometer J2, first resistor R1, the first diode D1, the first capacitance C1, the
Two capacitance C2, the 3rd capacitance C3, the 4th capacitance C4, the 5th capacitance C5, the first metal-oxide-semiconductor Q1 and NE555 chip, power supply VCC difference
Be connected with the second pin of the first potentiometer J1 and the 3rd pin, the first pin of the first potentiometer J1 respectively with institute
The 7th pin for stating the second pin of the second potentiometer J2, the 3rd pins of the second potentiometer J2 and the NE555 chips connects
Connect, the first pin of the second potentiometer J2 is grounded by the first capacitance C1, and the first of the second potentiometer J2 draws
Foot is also connected with the second pin of the NE555 chips and the 6th pin respectively, the power supply VCC also with the first resistor R1
Anode after concatenation with the first diode D1 is connected, the 3rd pin of the NE555 chips and the first diode D1
Cathode connection, the grid of the 3rd pin of the NE555 chips also with the first metal-oxide-semiconductor Q1 is connected, the NE555 chips
The 5th pin by being grounded after the second capacitance C2, the 8th pin of the NE555 chips passes through the 3rd capacitance C3
After be grounded, the one end of the 8th pin of the NE555 chips also with the transmitting coil is connected, the other end of the transmitting coil
Drain electrode with the first metal-oxide-semiconductor Q1 is connected, the source electrode ground connection of the first metal-oxide-semiconductor Q1, the electricity of the 4th capacitance C4 and the 5th
Hold the both ends that C5 is connected in parallel on the transmitting coil respectively.
A kind of 5. wireless charging system of electric automobile according to claim 4, it is characterised in that the rectifying and wave-filtering electricity
Road includes rectifier bridge BR1, the 6th capacitance C6, the 7th capacitance C7 and the 8th capacitance C8, and the rectifier bridge BR1 includes the second diode
D2, the 3rd diode D3, the 4th diode D4 and the 5th diode D5, the both ends of the receiving coil respectively with the rectifier bridge
The ac input end connection of BR1, the 6th capacitance C6 are connected in parallel on the both ends of the 7th capacitance C7, and the 7th capacitance C7 is simultaneously
The both ends of the receiving coil are associated in, the cathode output end of the rectifier bridge BR1 is connected with one end of the 8th capacitance C8, institute
The cathode output end for stating rectifier bridge BR1 is connected with the other end of the 8th capacitance C8.
A kind of 6. wireless charging system of electric automobile according to claim 5, it is characterised in that the booster circuit bag
Include the 9th capacitance C9, the tenth capacitance C10, the 11st capacitance C11, the 12nd capacitance 12, the 6th diode D6, the 7th diode
D7, second resistance R2,3rd resistor R3, the 4th resistance R4, the first inductance L1, the second inductance L2 and boost chip LM2577；Institute
It is adjustable resistance to state 3rd resistor R3, and the cathode of the 6th diode D6 is connected with one end of the first inductance L1, described
The plus earth of 6th diode D6, the both ends of the 6th diode D6 are also parallel with the 9th capacitance C9, and described first
Fiveth pin of the one end of inductance L1 also with the boost chip LM2577 is connected, the other end of the first inductance L1 with it is described
The 4th pin connection of boost chip LM2577, the anode of the other end of the first inductance L1 also with the 7th diode D7
Connect, be connected after cathode concatenation the second inductance L2 of the 7th diode D7 with the positive terminal of automobile storage battery, automobile
The negative pole end ground connection of storage battery, the centre cap of the cathode of the 7th diode D7 also with the 3rd resistor R3 are connected, institute
State boost chip LM2577 the first pin be connected successively with the second resistance R2 and the tenth capacitance C10 after be grounded, the liter
The second pin of pressure chip LM2577 is connected with one end of the 3rd resistor R3, one end of the 3rd resistor R3 also with it is described
One end connection of 4th resistance R4, the other end ground connection of the 4th resistance R4, the other end of the 3rd resistor R3 pass through institute
The 11st capacitance C11 ground connection is stated, the 12nd capacitance is also parallel between the positive terminal and negative pole end of the automobile storage battery
12。
A kind of 7. wireless charging system of electric automobile according to claim 6, it is characterised in that second diode
D2, the 3rd diode D3, the 4th diode D4 and the 5th diode D5 use Schottky diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721293973.4U CN207234532U (en) | 2017-10-09 | 2017-10-09 | A kind of wireless charging system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721293973.4U CN207234532U (en) | 2017-10-09 | 2017-10-09 | A kind of wireless charging system of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207234532U true CN207234532U (en) | 2018-04-13 |
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ID=61851348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721293973.4U Active CN207234532U (en) | 2017-10-09 | 2017-10-09 | A kind of wireless charging system of electric automobile |
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| CN (1) | CN207234532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718105A (en) * | 2018-08-06 | 2018-10-30 | 庹传树 | A kind of wireless charging circuit of power battery |
| CN113162245A (en) * | 2021-03-23 | 2021-07-23 | Oppo广东移动通信有限公司 | Charging circuit, chip and equipment |
-
2017
- 2017-10-09 CN CN201721293973.4U patent/CN207234532U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718105A (en) * | 2018-08-06 | 2018-10-30 | 庹传树 | A kind of wireless charging circuit of power battery |
| CN113162245A (en) * | 2021-03-23 | 2021-07-23 | Oppo广东移动通信有限公司 | Charging circuit, chip and equipment |
| WO2022199219A1 (en) * | 2021-03-23 | 2022-09-29 | Oppo广东移动通信有限公司 | Charging circuit, chip and device |
| CN113162245B (en) * | 2021-03-23 | 2023-11-10 | Oppo广东移动通信有限公司 | Charging circuit, chip and device |
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