CN209545217U - Wireless charging circuit and wireless charger equipped with the wireless charging circuit - Google Patents
Wireless charging circuit and wireless charger equipped with the wireless charging circuit Download PDFInfo
- Publication number
- CN209545217U CN209545217U CN201920710498.9U CN201920710498U CN209545217U CN 209545217 U CN209545217 U CN 209545217U CN 201920710498 U CN201920710498 U CN 201920710498U CN 209545217 U CN209545217 U CN 209545217U
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- charging circuit
- unit
- circuit
- connect
- control unit
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Classifications
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- 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
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The utility model discloses a kind of wireless charging circuit and equipped with the wireless charger of the wireless charging circuit, wireless charger includes wireless charging circuit, the wireless charging circuit includes control unit, transmitting coil and the first charging circuit and the second charging circuit communicated to connect with control unit, transmitting coil is five and is overlapped mutually, it is connect after three transmitting coils of connection are in parallel with the first charging circuit, it is connect after two transmitting coils of connection are in parallel with the second charging circuit, control unit receives the feedback signal of feedback unit transmission, judge the transmitting coil being aligned with mobile phone, control corresponding switching means conductive, and control signal is exported to power drive unit, power drive unit will control signal formation driving signal and be sent to corresponding transmitting coil, it realizes to two mobile phones while wireless charging；And realize large area non-blind area when single portion's mobile phone is laterally or vertically placed into charged area, arbitrarily charge with any coil alignment in five coils, charge efficiency is high.
Description
Technical field
The utility model relates to wireless charging field more particularly to a kind of wireless charging circuit and it is equipped with wireless charging electricity
The wireless charger on road.
Background technique
With the appearance of smart phone, people to mobile phone use it is more and more frequent, people to mobile phone like also with day
Enhancing.With keeping updating for mobile phone, the function of mobile phone is further powerful, and the capacity of battery of mobile phone restricts smart phone
The single use time, repeatedly plug charging cable be not only easily damaged charger, also user is allowed to feel put about.If using two kinds
The mobile phone of different model just needs to carry two charging cable, so very inconvenient.With the development of wireless charging technology, solve
The above problem greatly facilitates mobile phone charging, does not need people worried for interface difference.But user is past in a mobile environment
Toward multiple electronic equipments, such as two or two or more mobile phones, tablet computer can be carried, when two or two to power on
When sub- equipment needs to charge, user usually uses wireless charger and first charges to an electronic equipment, to be charged complete, then to another
One electronic equipment charging, the charging time is too long, and charging process user cannot be simultaneously using wireless charger to two electronics
Equipment charge.For this problem, most of user will use two wireless chargers to two electronic equipments while fill
Electricity, carrying two wireless chargers can make troubles to user in a mobile environment, and quantity is more, is easily lost, and existing skill
In art, realizes to be two electronic equipment chargings by setting two-way charged area, but per only one coil all the way, fill
Electric region is limited, and the receiving coil of mobile phone is not easy to be aligned, and two transmitting coils are set as all the way, charging in single mobile phone
When, it is difficult to ensure that transmitting coil is aligned completely with mobile phone, in this way, needing to be placed on specific region, ability when mobile phone is placed
It charges.
Utility model content
Shortcoming present in view of the above technology, the utility model provide a kind of wireless charging circuit and are equipped with the nothing
The wireless charger of line charging circuit when the mobile phone is charging, can charge while realizing to two mobile phones chargings to list portion
It is high-efficient.
To achieve the above object, the utility model provides a kind of wireless charging circuit, including power supply unit, control unit,
First charging circuit, the second charging circuit and transmitting coil, the transmitting coil are five and are overlapped mutually that described first charges
Circuit and the second charging circuit include the feedback unit connecting with control unit, sequentially connected resonant capacitance, power drive
Unit, the coupling of the power drive unit of one end and the first charging circuit, the other end after three continuous transmitting coils are in parallel
It is concatenated with the resonant capacitance of the first charging circuit, feedback unit, one end after the remaining two continuous transmitting coils are in parallel
It is concatenated with the coupling of the power drive unit of the second charging circuit, the other end with the resonant capacitance of the second charging circuit, feedback unit,
Each transmitting coil concatenated with single switch unit after with the power drive unit couple, and the switch unit with
Control unit connection, described control unit receive the feedback signal that the feedback unit is sent, judgement and the reception in mobile phone
The transmitting coil of coil alignment controls corresponding switching means conductive, and exports pwm pulse control signal and give power drive list
Member, the power drive unit form driving signal after amplifying to control signal and are sent to corresponding transmitting coil, opponent
Machine equipment charges.
Wherein, each switch unit includes the first triode, the second triode, the first mos pipe and the 2nd mos
Pipe, the pole E of first triode connects to power supply, the pole B is connect with by 3rd resistor with the pole C of the second triode, C is extremely logical
It crosses first resistor to connect with the grid of the first and second mos pipes, and the pole C passes through first resistor and second resistance and first and second
The source electrode of mos pipe connects, and the pole B of second triode is connect with control unit, the pole E is connected to ground, the first mos pipe
Drain electrode is connect with the power amplification unit, and the drain electrode of the 2nd mos pipe is connect with the transmitting coil.
Wherein, first triode is PNP triode, and second triode is NPN triode, described first and the
Two mos pipe is all N mos pipe.
Wherein, described control unit is CV90328B chip.
Wherein, the feedback unit includes voltage feedback unit and current feedback unit, the electricity of first charging circuit
Pressure feed circuit is connect with one end of three continuous transmitting coil parallel connections, control unit simultaneously, the second charging electricity
The voltage feedback circuit on road is connect with one end of two continuous transmitting coil parallel connections, control unit simultaneously, and described first
The current feedback circuit of charging circuit is connect with the first charging circuit power amplification unit, control unit simultaneously, second charging
The current feedback circuit of circuit is connect with the second charging circuit power amplification unit, control unit simultaneously.
Wherein, the power amplification unit includes driving circuit and amplifying circuit, the enabled input terminal of the driving unit
It is connect with the enabled output end of described control unit, the output end of the driving unit is connect with the resonant capacitance, the drive
The output end of dynamic circuit is also connect with the amplifying circuit, and the output end of the amplifying circuit is also connect with current feedback unit.
Wherein, the voltage of the driving signal is greater than the voltage of control signal.
Wherein, further include the first indicating unit and the second indicating unit, first and second indicating unit with and control
Unit processed is electrically connected, when first charging circuit and/or the second charging circuit work, first indicating unit and/or
Second indicating unit is lighted or is flashed.
The utility model also provides a kind of wireless charger, including wireless charging circuit recited above, further includes shell,
Cavity is equipped in the shell, upper surface is equipped with rest area, is equipped with PCB circuit board, the wireless charging circuit in the shell
It is arranged in PCB circuit board, and the transmitting coil is arranged in relatively and in the one side of rest area, the shell is equipped with and connects electricity
Port, the power connection end mouth are electrically connected with the pcb board by conducting wire.
The beneficial effects of the utility model are: compared with prior art, wireless charging circuit provided by the utility model and
Wireless charger equipped with the wireless charging circuit is equipped with wireless charging circuit, by wireless charging circuit in wireless charger
It is set as including control unit, the first charging circuit and the second charging circuit, transmitting coil with control unit communication connection, the
One charging circuit and the second charging circuit include the feed circuit connecting with control unit, sequentially connected resonant capacitance and function
Rate driving unit, transmitting coil is 5 and is overlapped mutually, one end and the first charging circuit after three continuous transmitting coils are in parallel
Power drive unit coupling, the other end concatenated with the resonant capacitance of the first charging circuit, feedback unit, and another two is continuous
One end and the power drive unit coupling of the second charging circuit, the resonance of the other end and the second charging circuit after transmitting coil is in parallel
Capacitor, feedback unit concatenation, each transmitting coil couples after concatenating with single switch unit with power drive unit, so that control
Unit processed receives the feedback signal of feedback unit transmission, since the first charging circuit and the second charging circuit have feedback
Member, therefore, control unit first determine whether a mobile phone charging or two mobile phone chargings, and then judgement is aligned with mobile phone
Transmitting coil controls corresponding switching means conductive, and exports pwm pulse control signal to power drive unit, power drive
Unit forms driving signal after amplifying to control signal and is sent to corresponding transmitting coil, and handset device charges,
It can not only charge to two mobile phones, and when single portion's mobile phone is charged, be filled in the first charging circuit with second simultaneously
Any one transmitting limit is just aligned with the receiving coil in hand in five transmitting coils of circuit superposition, can be corresponding
Ground charges to mobile phone, the charge efficiency of the mobile phone greatly improved, when to solve single coil or two coils be one group, two
The shortcomings that there are blind areas the position that is overlapped mutually of group coil.
Detailed description of the invention
Fig. 1 is the overall schematic of the utility model；
Fig. 2 is first block diagram of the utility model；
Fig. 3 is second block diagram of the utility model；
Fig. 4 is the third block diagram of the utility model；
Fig. 5 is the control unit circuit diagram of the utility model；
Fig. 6 is the coil circuit figure of first charging circuit of the utility model；
Fig. 7 is the coil circuit figure of second charging circuit of the utility model；
Fig. 8 is the driving circuit figure of second charging circuit of the utility model；
Fig. 9 is the amplification circuit diagram of second charging circuit of the utility model；
Figure 10 is the first indicating unit circuit diagram of the utility model.
Main element symbol description is as follows:
1, shell 2, control unit
3, feedback unit 4, power supply unit
5, the first charging circuit 6, the second charging circuit
7, switch unit 8, coil unit
9, power drive unit 10, transmitting coil
13, resonant capacitance 14, the first indicating unit
15, the second indicating unit.
Specific embodiment
In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.
Fig. 1-Fig. 5 is please referred to, the utility model discloses a kind of wireless charger, including shell 1, is equipped with sky in shell 1
Chamber, upper surface are equipped with rest area 11, PCB circuit board 12 are equipped in shell, and wireless charging circuit is arranged in PCB circuit board 12,
And transmitting coil 10 is arranged in relatively and in the one side of rest area 11, shell 1 is equipped with power connection end mouth 13, and power connection end mouth 13 passes through
Conducting wire is electrically connected with pcb board 12, the wireless charging circuit include control unit 2, power supply unit 4 and with 2 communication link of control unit
The first charging circuit 5 and the second charging circuit 6, transmitting coil 10 connect, power supply unit 4 are the first charging circuit 5, control unit
6 and control unit 2 power, transmitting coil 10 is five and to be overlapped mutually, and forms a complete wireless charging area, first fills
Circuit 5 and the second charging circuit 6 include the feedback unit 3 being connect with control unit 2, sequentially connected resonant capacitance 13 and
Power drive unit 9, one end and the coupling of power drive unit 9, the other end and resonance after three 10 parallel connections of continuous transmitting coil
Capacitor 13, feedback unit 3 concatenate, the power of one end and the second charging circuit after remaining two 10 parallel connections of continuous transmitting coil
The coupling of driving unit 9, the other end are concatenated with the resonant capacitance 13 of the second charging circuit, feedback unit 3, and each transmitting coil 10 is
It is coupled after being concatenated with single switch unit 7 with power drive unit 9, and switch unit 7 is connect with control unit 2, control unit 2
The feedback signal of the transmission of feedback unit 3 of the first charging circuit 5 and the second charging circuit 5 is received, first judgement is the first charging
It is placed with mobile phone on the transmitting coil of circuit or the second charging circuit, or has placement mobile phone, i.e., judgement is filled to a mobile phone
Electricity or two mobile phone chargings, judge the transmitting coil being aligned with mobile phone later, control corresponding switch unit 7 and be connected, and is defeated
Driving signal hair is formed after pwm pulse signal amplifies output signal to power drive unit 9, power drive unit 9 out
It is sent to corresponding transmitting coil 10, handset device charges, and five transmitting coils 10 are arranged, and is by three transmitting coils 10
One group, two transmitting coils 10 are another group, and are disposed relative to the one of rest area after the opposite superposition of five transmitting coils 10
In face, may be implemented to two mobile phones while charging, when two when the mobile phone is charging, it is usually that mobile phone is opposite with rest area 11
Vertical direction is placed, at this point, any one for the transmitting coil 10 that a mobile phone can be in parallel with three is aligned, another mobile phone meeting
Any one is aligned with two transmitting coils 10 in parallel, and due to there is one fixed width mobile phone, it is placed on three parallel connections
Transmitting coil 10 on mobile phone maximum effective coverage transmitting coil 10 be unlikely to be in three transmitting coils 10 in parallel with
The adjacent transmitting coil 10 of two transmitting coils 10 in parallel, therefore, the good interference avoided between transmitting coil, and increase
The big charging area of transmitting coil 10, and when to list portion when the mobile phone is charging, due to one of hair of three transmitting coils 10
Ray circle 10 is located just at rest area charged area middle position, and the receiving coil in mobile phone is normally at mobile phone length direction
Intermediate position, while the overall effectively charging area of transmitting coil becomes larger, the receiving coil of mobile phone is easier and emission lines
10 alignment of circle, i.e., the receiving coil of mobile phone is just aligned with third transmitting coil, and mobile phone can also be effective in 5 transmitting coils
It is arbitrarily moved in charged area, wireless charging process will not all interrupt, and arbitrarily move uninterrupted nothing in 5 coil effective coverages
Line charge electricity, substantially increases charge efficiency, and facilitate the judgement of control unit 2.
In the present embodiment, refering to Fig. 2-Fig. 9, the first charging circuit 5 and the second charging circuit 6 include feedback unit 3,
Sequentially connected power drive unit 9 and resonant capacitance 13, wherein charge after three 10 parallel connections of continuous transmitting coil with first
The resonant capacitance 13 of circuit 5 forms first coil circuit 81 after concatenating, and fills after two 10 parallel connections of continuous transmitting coil with second
The resonant capacitance 13 of circuit 6 forms two coil circuit 82 after concatenating, first coil circuit 81 includes transmitting coil CL1, transmitting
Coil CL2, transmitting coil CL3 and resonant capacitance 13, resonant capacitance 13 include capacitor C61-64, transmitting coil CL1, transmitting coil
It is connect with after resonant capacitance C61-64 series connection with power drive unit 9 after CL2 and transmitting coil CL3 are in parallel, and transmitting coil
CL1, transmitting coil CL2, transmitting coil CL3 are separately connected a switch unit 7 and connect, and each switch unit 7 also drives with power
Moving cell 9 connects, and specifically, by taking the switch unit 7 connecting with transmitting coil CL1 as an example, switch unit 7 includes the first triode
Q15, the second triode Q11, the first mos pipe and the 2nd mos pipe, the first mos pipe and the 2nd mos pipe are referred to as Q3, and Q3 is double N
Mos pipe, the pole E of the first triode Q15 connects to power supply, the pole B connects with by the pole C of 3rd resistor R89 and the second triode Q11
Connect, the pole C is by 2 foot of grid of first resistor R87 and Q3 and the connection of 4 feet, and the pole C passes through first resistor R87 and second resistance R81
Connect with 1 foot of source electrode of Q3 and 3 feet, 5 feet and 6 feet of Q3 are connect with transmitting coil CL1,7 feet and 8 feet of Q3 by the end VODR with
The end VODR of power drive unit connects, and the pole B of the second triode is connect with control unit, the pole E is connected to ground, so that the one or three
The lasting input high level of the emitter of pole pipe, when mobile phone is aligned with coil CL1, the end SW1 of control unit 2 passes through the two or three
The pole the B input high level of pole pipe, so that Q15 is connected, the 5-8 foot of Q3 has electric current to pass through at this time, so that transmitting coil CL1 is led
Logical, transmitting coil 1 works, and is PNP triode by the first triode Q15, and the second triode Q11 is NPN triode, and Q3 is N
Mos pipe, and so on, the control mode of other transmitting coils is identical, to have the function that the corresponding transmitting coil of control.
In the present embodiment, refering to Fig. 3-Figure 10, control unit 2 is CV90328B chip, and feedback unit 3 includes that voltage is anti-
Unit and current feedback unit 33 are presented, the voltage feedback circuit of the first charging circuit 5 is first voltage feed circuit 31, and simultaneously
One end V-BACK in parallel with three continuous transmitting coils 10, control units 2 are connect, and the end V-BACK is to CV90328B in Fig. 5
Chip circuit is first voltage feed circuit, and the voltage feedback circuit of the second charging circuit 6 is second voltage feed circuit 32, and
It is connect simultaneously with two continuous transmitting coil 10 one end V-BACK1 in parallel, control units 2, with first voltage feed circuit
31 is similar, and the end I-OUT of the power amplification unit 7 of the current feedback circuit 33 of the first charging circuit 5 and the first charging circuit 5 connects
Connect, the connection of control unit 2, as in Fig. 5 the end I-OUT to CV90328B chip circuit be the first charging circuit 5 current feedback
Circuit 33, the current feedback circuit 33 of the second charging circuit 6 simultaneously with the end I-OUT1 of the power amplification unit of the second charging circuit,
Control unit connection, first voltage feedback unit 31, second similar to the one the first current feedback circuits 33 of charging circuit 5
Voltage that voltage feedback unit 32 and current feedback unit 33 in time export coil unit, current feedback to control unit 2,
The conducting and output of the circuit of the corresponding transmitting coil 10 easy to control of control unit 2, wireless charging effect are good；And power amplification list
Member 9 includes driving circuit 91 and amplifying circuit 92, and enabling for the enable end input end PWMC of driving unit 91 and control unit is defeated
Outlet PWMC connection, the output end of driving unit 91 are connect with coil circuit 8, the output end of driving circuit 91 also with amplifying circuit
92 connections, the output end of amplifying circuit 92 is also connect with current feedback unit 33, by taking the second charging circuit as an example, transmitting coil
It after CL4 and CL4 is connect with resonant capacitance C57-C60, is connect by port VODM with driving circuit 91 and amplifying circuit 92, with hair
For ray circle CL4, driving unit 91 is connect by the end PWMC with the end PWMC of control unit 2, and then is led to after driving chip U2
It crosses the port VODM to connect with amplifying unit 92 and transmitting coil CL4, and amplifying unit 92 is connected by the port DRLO and control unit 2
It connects, the first metal-oxide-semiconductor of switch unit 7 and the second metal-oxide-semiconductor Q1 are connect by VODP with amplifying unit 92, and amplifying unit 92 passes through
I-OUT1 foot is connect with current feedback unit 33, and transmitting coil CL4 is further through the end V-BACK1 and second voltage feedback unit 32
Connection, if the internal receipt coil of mobile phone is aligned with transmitting coil CL4, transmitting coil CL4 is fed back by second voltage at this time
Unit 32 and current feedback unit 33 feed back the voltage and current of transmitting coil CL4 into control unit 2, control unit 2 into
It after row judgement, is exported by PWMC foot signal, which is control signal, and control signal passes through driving unit 91 and amplifying unit
Output drive signal is to transmitting coil CL4 after 92, and the voltage of driving signal is greater than the voltage of control signal, meanwhile, control is single
Member 2 is by B pole input high level of the SW3 foot to the second triode Q5, so that the first triode Q7 is connected, and then Q1 is connected, and opens
It closes unit 7 and amplifying unit 92 is connected by 7 feet of Q1 and 8 feet, and transmitting coil is connected by 5 feet of Q1 and 6 feet in switch unit 7
CL4 so that transmitting coil forms complete circuit, and charges to mobile phone；It further include that the first indicating unit 14 and second refers to
Show unit 15, the first indicating unit 14 and the second indicating unit 15 are electrically connected with control unit 2, with the first indicating unit
For, the first indicating unit is connect by the end LED1 with control unit 2, the circuit and the first indicating unit of the second indicating unit 15
14 similar, the working condition of the first indicating unit 14 the first charging circuit 5 of instruction, the second charging of the second indicating unit 15 instruction
When the working condition of circuit 6, the first charging circuit 5 and/or the second charging circuit 6 work, the first indicating unit 14 and/or second
Indicating unit 15 is lighted or is flashed.
The advantage of the utility model:
(1) two groups of charging circuits and five transmitting coils being overlapped mutually are set, what the first charging circuit was connect with three
Transmitting coil connection, the second charging circuit are connected with two transmitting coils connecting, and allow to charge to two mobile phones simultaneously,
And when for list portion, when the mobile phone is charging, charge efficiency is more preferable；
(2) it is equipped with the first indicating unit and the second indicating unit, so that user is best understood from the charged state of mobile phone.
Disclosed above is only several specific embodiments of the utility model, but the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the protection scope of the utility model.
Claims (9)
1. a kind of wireless charging circuit, which is characterized in that including power supply unit, control unit, the first charging circuit, the second charging
Circuit and transmitting coil, the transmitting coil are five and are overlapped mutually that first charging circuit and the second charging circuit are equal
Including feedback unit, the sequentially connected resonant capacitance, power drive unit being connect with control unit, three continuous hairs
The resonance for penetrating the coupling of the power drive unit of one end and the first charging circuit, the other end and the first charging circuit after coils from parallel connection of coils is electric
Hold, feedback unit concatenation, the power of one end and the second charging circuit drives after the remaining two continuous transmitting coils are in parallel
Moving cell coupling, the other end concatenated with the resonant capacitance of the second charging circuit, feedback unit, each transmitting coil with list
It is coupled after a switch unit concatenation with the power drive unit, and the switch unit is connect with control unit, the control
Unit receives the feedback signal that the feedback unit is sent, and judges the transmitting coil being aligned with the receiving coil in mobile phone, control
Corresponding switching means conductive is made, and exports pwm pulse control signal to power drive unit, the power drive unit is to control
Signal processed forms driving signal after amplifying and is sent to corresponding transmitting coil, and handset device charges.
2. wireless charging circuit according to claim 1, which is characterized in that each switch unit includes the one or three
Pole pipe, the second triode, the first mos pipe and the 2nd mos pipe, the pole E of first triode connects to power supply, the pole B with pass through
3rd resistor is connect with the pole C of the second triode, the pole C is connect by first resistor with the grid of the first and second mos pipes, and C
Pole is connect by first resistor and second resistance with the source electrode of the first and second mos pipes, the pole B of second triode and control
Unit connection, the pole E are connected to ground, and the drain electrode of the first mos pipe is connect with the power amplification unit, the 2nd mos pipe
Drain electrode connect with the transmitting coil.
3. wireless charging circuit according to claim 2, which is characterized in that first triode is PNP triode, institute
Stating the second triode is NPN triode, and the first and second mos pipe is all N mos pipe.
4. wireless charging circuit according to claim 1, which is characterized in that described control unit is CV90328B chip.
5. wireless charging circuit according to claim 4, which is characterized in that the feedback unit includes voltage feedback unit
And current feedback unit, the voltage feedback circuit of first charging circuit are in parallel with three continuous transmitting coils simultaneously
One end, control unit connection, the voltage feedback circuit of second charging circuit simultaneously with two continuous emission lines
Enclose one end in parallel, control unit connection, the current feedback circuit of first charging circuit simultaneously with the first charging circuit power
Amplifying unit, control unit connection, the current feedback circuit of second charging circuit simultaneously with the second charging circuit power amplification
Unit, control unit connection.
6. wireless charging circuit according to claim 5, which is characterized in that the power amplification unit includes driving circuit
And amplifying circuit, the enabled input terminal of the driving unit and the enabled output end of described control unit connect, the driving is single
The output end of member is connect with the resonant capacitance, and the output end of the driving circuit is also connect with the amplifying circuit, described to put
The output end of big circuit is also connect with current feedback unit.
7. wireless charging circuit according to claim 6, which is characterized in that the voltage of the driving signal is greater than control letter
Number voltage.
8. wireless charging circuit according to claim 1, which is characterized in that further include the first indicating unit and the second instruction
Unit, first and second indicating unit are electrically connected with control unit, first charging circuit and/or second are filled
When circuit works, first indicating unit and/or the second indicating unit are lighted or are flashed.
9. a kind of wireless charger, including the described in any item wireless charging circuits of claim 1-8, which is characterized in that also wrap
Shell is included, cavity is equipped in the shell, upper surface is equipped with rest area, is equipped with PCB circuit board, the wireless charging in the shell
Circuit is arranged in PCB circuit board, and the transmitting coil is arranged in relatively in the one side of rest area, sets on the shell
There is power connection end mouth, the power connection end mouth is electrically connected with the pcb board by conducting wire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018219047747 | 2018-11-19 | ||
| CN201821904774 | 2018-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209545217U true CN209545217U (en) | 2019-10-25 |
Family
ID=68246916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920710498.9U Active CN209545217U (en) | 2018-11-19 | 2019-05-17 | Wireless charging circuit and wireless charger equipped with the wireless charging circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209545217U (en) |
| WO (1) | WO2020103413A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114356126A (en) * | 2020-09-29 | 2022-04-15 | 宝德科技股份有限公司 | Multi-coil mouse pad with dynamic adjustment configuration |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101659162B1 (en) * | 2014-09-11 | 2016-09-22 | 삼성전기주식회사 | Non-contact type power charging apparatus |
| US10491026B2 (en) * | 2016-03-31 | 2019-11-26 | Intel Corporation | Impedance matching multiple coils in an electronic device |
| CN105978075A (en) * | 2016-06-06 | 2016-09-28 | 薛寿贞 | Wireless charger |
| CN206075703U (en) * | 2016-09-30 | 2017-04-05 | 厦门新页科技有限公司 | A kind of Electronic desk calendar with wireless charging function |
-
2019
- 2019-05-17 CN CN201920710498.9U patent/CN209545217U/en active Active
- 2019-05-20 WO PCT/CN2019/087644 patent/WO2020103413A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114356126A (en) * | 2020-09-29 | 2022-04-15 | 宝德科技股份有限公司 | Multi-coil mouse pad with dynamic adjustment configuration |
| CN114356126B (en) * | 2020-09-29 | 2023-09-05 | 宝德科技股份有限公司 | Multi-coil mouse pad with dynamic adjustment configuration |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020103413A1 (en) | 2020-05-28 |
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