CN208158203U - Wireless charging device - Google Patents
Wireless charging device Download PDFInfo
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- CN208158203U CN208158203U CN201820781216.XU CN201820781216U CN208158203U CN 208158203 U CN208158203 U CN 208158203U CN 201820781216 U CN201820781216 U CN 201820781216U CN 208158203 U CN208158203 U CN 208158203U
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Abstract
The utility model discloses a kind of wireless charging device; including shell and wireless charging circuit; the wireless charging circuit is disposed in the housing portion, and the wireless charging circuit includes protection location, the first rectification filtering unit, voltage transformation module, the second rectification filtering unit, constant-current control unit, oscillation amplifying unit, transmitting coil and voltage feedback unit；The protection location, the first rectification filtering unit, voltage transformation module, the second rectification filtering unit, constant-current control unit, oscillation amplifying unit and transmitting coil are sequentially connected in series；The voltage feedback unit is connected in series with the voltage transformation module and the second rectification filtering unit respectively.By increasing voltage transformation module, so that wireless charging device has the function of exporting different voltages value, to meet the charging voltage demand of distinct electronic apparatuses.
Description
Technical field
The utility model relates to charging unit field more particularly to a kind of wireless charging devices.
Background technique
Wireless charging device refers to the charging being connected on the electronic equipment for needing to charge without traditional charging power cord
Device uses newest wireless charging technology, carries out transmission electric energy by using the magnetic field generated between coil, got rid of line charge
The inconvenience of electricity, the charging technique of mainstream has electromagnetic induction technology and mr techniques at present.
With the improvement of living standards, electronic equipment has become a role important in people's life.Different electricity
Sub- product matches different voltage and current values.Currently, wireless charging device in the market can only export mostly one it is fixed
Voltage value is not able to satisfy the electronic equipment of different charging voltage demands.
Utility model content
The main purpose of the utility model is to provide one kind to provide different according to electronic equipment charging voltage demand
Wireless charging device with voltage.
Wireless charging device provided by the utility model, including shell and wireless charging circuit, above-mentioned wireless charging circuit
Set on above-mentioned enclosure interior, above-mentioned wireless charging circuit include protection location, the first rectification filtering unit, voltage transformation module,
Second rectification filtering unit, constant-current control unit, oscillation amplifying unit, transmitting coil and voltage feedback unit；Above-mentioned protection list
Member, the first rectification filtering unit, voltage transformation module, the second rectification filtering unit, constant-current control unit, oscillation amplifying unit and
Transmitting coil is sequentially connected in series；Above-mentioned voltage feedback unit respectively with above-mentioned voltage transformation module and the second rectification filtering unit
It is connected in series；Above-mentioned voltage feedback unit is believed compared with reference voltage according to the output voltage of above-mentioned second rectification filtering unit
Number above-mentioned voltage transformation module of control converts external voltage.
Further, above-mentioned protection location includes over-current protecting unit and lightning protection unit, above-mentioned over-current protecting unit and anti-
Thunder unit is connected in series, and above-mentioned lightning protection unit and above-mentioned first rectification filtering unit are connected in series.
Further, above-mentioned voltage feedback unit includes voltage sampling unit, voltage comparison unit and PWM modulation unit,
Above-mentioned voltage sampling unit, voltage comparison unit and PWM modulation unit are sequentially connected in series；And above-mentioned voltage sampling unit with it is upper
The series connection of the second rectification filtering unit is stated, above-mentioned PWM modulation unit and above-mentioned voltage transformation module are connected in series；Above-mentioned voltage
Comparing unit carries out the above-mentioned PWM modulation unit root compared with reference voltage according to the sampled signal of above-mentioned voltage sampling unit
Above-mentioned voltage transformation module voltage of transformation is controlled according to the comparison signal of above-mentioned voltage comparison unit.
Further, above-mentioned oscillation amplifying unit includes oscillating unit and amplifying unit, above-mentioned oscillating unit and above-mentioned is put
Big unit is connected in series；And above-mentioned oscillating unit and above-mentioned constant-current control unit are connected in series, above-mentioned amplifying unit and above-mentioned hair
Ray circle is connected in series.
Further, above-mentioned wireless charging circuit further includes current transformation unit, and above-mentioned current transformation unit includes electric current
Detection unit, current control unit and current limiting unit, above-mentioned current detecting unit, current control unit and current limiting unit are successively gone here and there
Connection connection；And above-mentioned current detecting unit and above-mentioned oscillation amplifying unit series connection, above-mentioned current limiting unit and above-mentioned current constant control
Unit is connected in series；Above-mentioned current control unit controls above-mentioned current limiting unit according to the detection signal of above-mentioned current detecting unit
It is switched in or out.
It further, further include USB interface, above-mentioned USB interface and above-mentioned protection location are connected in series, and above-mentioned USB connects
Mouth is set to above-mentioned housing sidewall.
Further, above-mentioned shell is polyhedron, and includes at least six faces.
Further, the corner of above-mentioned shell is rounded.
Further, above-mentioned housing bottom is equipped with Slippery proof foot pad, and above-mentioned housing bottom is at least provided with four above-mentioned non-slip feets
Pad, above-mentioned Slippery proof foot pad are arranged by midpoint equidistant ring array of above-mentioned housing bottom center.
Further, above-mentioned thickness of shell is 5mm-15mm.
The utility model has the advantages that：By increasing voltage transformation module, so that wireless charging device has
The function of different voltages value is exported, to meet the charging voltage demand of distinct electronic apparatuses；By increasing current transformation unit, make
Obtaining wireless charging device has the function of the different current values of output, to meet the charge-current demands of distinct electronic apparatuses；The nothing
The wireless charging circuit design of line charge electric installation also has overcurrent, over-voltage, under-voltage protection function；Set round for the corner of shell
Angle prevents from scratching user and scratches electronic equipment；Slippery proof foot pad is set in housing bottom, prevents wireless charging device cunning from falling.
Detailed description of the invention
Fig. 1 is the circuit module figure of the wireless charging device of an embodiment of the present invention；
Fig. 2 is the circuit module figure of the wireless charging device of an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the wireless charging device of an embodiment of the present invention.
In figure：1 protection location, 2 first rectification filtering units, 3 voltage transformation modules, 4 second rectification filtering units, 5 perseverances
Flow control unit, 6 oscillation amplifying units, 7 transmitting coils, 8 voltage feedback units, 9 current varying units, 10 shells, 11 overcurrents
Protection location, 12 lightning protection unit, 13USB interface, 14 indicator lights, 81PWM modulation unit, 82 voltage comparison units, 83 voltages are adopted
Sample unit, 91 current limiting units, 92 current control units, 93 current detecting units.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly, and the connection, which can be, directly to be connected
It connects, is also possible to be indirectly connected with.
It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
Referring to Fig.1-3, the wireless charging device of an embodiment of the present invention, including 10 shells and wireless charging electricity are proposed
Road, above-mentioned wireless charging circuit are set to above-mentioned 10 enclosure interior, and above-mentioned wireless charging circuit includes 1 protection location, 2 first rectifications
Filter unit, 3 voltage transformation modules, 4 second rectification filtering units, 5 constant-current control units, 6 oscillation amplifying units, 7 emission lines
Circle and 8 voltage feedback units；Above-mentioned 1 protection location, 2 first rectification filtering units, 3 voltage transformation modules, 4 second rectifying and wave-filterings
Unit, 5 constant-current control units, 6 oscillation amplifying units and 7 transmitting coils are sequentially connected in series；Above-mentioned 8 voltage feedback unit difference
It is connected in series with above-mentioned 3 voltage transformation module and 4 second rectification filtering units；Above-mentioned 8 voltage feedback unit is according to above-mentioned 4 second
The output voltage of rectification filtering unit and the comparison signal of reference voltage control above-mentioned 3 voltage transformation module and carry out to external voltage
Transformation.Above-mentioned 1 protection location is used to prevent excessive electric current and voltage from flowing into circuit and burning electronic component, and above-mentioned 2 first
Rectification filtering unit carries out rectifying and wave-filtering to the voltage of external power input, and above-mentioned 3 voltage transformation module is used for external power supply
The voltage transformation of input is the voltage of corresponding electronic equipment demand, and above-mentioned 4 second rectification filtering unit is used for will be to transformed
Voltage carries out rectifying and wave-filtering, and above-mentioned 5 constant-current control unit is used to control the output valve of electric current, and above-mentioned 6 oscillation amplifying unit is used for
It converts electric energy to high-frequency signal and high-frequency signal is amplified, above-mentioned 7 transmitting coil is sent out using enlarged high-frequency signal
Radio magnetic wave, above-mentioned 8 voltage feedback unit are used for the demand voltage according to detection electronic equipment and then control above-mentioned 8 voltage transformation
Unit carries out voltage of transformation.
In the present embodiment, above-mentioned 1 protection location includes 11 over-current protecting units and 12 lightning protection unit, and above-mentioned 11 overcurrent is protected
It protects unit and 12 lightning protection unit is connected in series, and above-mentioned 12 lightning protection unit and above-mentioned 2nd one rectification filtering unit are connected in series.On
12 lightning protection unit are stated for filtering out the peaking voltage in external power supply input voltage, to achieve the purpose that lightning protection；Above-mentioned 11
Over-current protecting unit when external power supply short circuit for being disconnected and the connection of wireless charging circuit.
In the present embodiment, above-mentioned 8 voltage feedback unit include 83 voltage sampling units, 82 voltage comparison units and
81PWM modulation unit, above-mentioned 83 voltage sampling unit, 82 voltage comparison units and 81PWM modulation unit are sequentially connected in series；And
Above-mentioned 82 voltage sampling unit and above-mentioned 4 second rectification filtering unit are connected in series, above-mentioned 81PWM modulation unit and above-mentioned 8 electricity
Converter unit is pressed to be connected in series；Above-mentioned 83 voltage comparison unit is carried out according to the sampled signal of above-mentioned 82 voltage sampling unit and base
The comparison of quasi- voltage, above-mentioned 81PWM modulation unit control above-mentioned 8 voltage according to the comparison signal of above-mentioned 82 voltage comparison unit and become
Change unit voltage of transformation.Above-mentioned 83 voltage sampling unit according to the voltage that 4 second current rectifying and wave filtering circuits export for being adopted
Sample, sampled voltage for being compared with reference voltage and exporting comparison result signal by above-mentioned voltage comparison unit 82；On
Comparison result signal of the PWM modulation unit 81 for exporting according to voltage comparison unit is stated, to adjust the pulse width tune of output
The duty ratio of signal processed is to adjust the voltage that voltage transformation exports, so that above-mentioned 4 second rectification filtering unit exports stable electricity
Pressure.
In the present embodiment, above-mentioned 6 oscillation amplifying unit includes oscillating unit and amplifying unit, above-mentioned oscillating unit and upper
State amplifying unit series connection；And above-mentioned oscillating unit and above-mentioned 5 constant-current control unit are connected in series, above-mentioned amplifying unit with it is upper
State the series connection of 7 transmitting coils.Above-mentioned oscillating unit is used to be supplied to amplifying unit for converting voltage to high-frequency signal；
Above-mentioned amplifying unit is exported for amplifying to the high-frequency signal received to transmitting coil.
In the present embodiment, above-mentioned wireless charging circuit further includes 9 current transformation units, above-mentioned 9 current transformation unit packet
Include current detecting unit 93, current control unit 92 and current limiting unit 91, above-mentioned current detecting unit 93, current control unit 92
It is sequentially connected in series with current limiting unit 91；And above-mentioned current detecting unit 93 and above-mentioned 6 series connection of oscillation amplifying unit, above-mentioned limit
It flows unit 91 and above-mentioned constant-current control unit 5 is connected in series；Above-mentioned current control unit 92 is according to above-mentioned current detecting unit 93
Detection signal control being switched in or out for above-mentioned current limiting unit 91.Above-mentioned current detecting unit 93 is for detecting electronic equipment
Demand current value, above-mentioned current control unit 92 for control the control of above-mentioned current limiting unit 91 be connected to above-mentioned current limiting unit 91 with
Electronic switch (not marking in figure) between above-mentioned constant-current control unit 5 connects or disconnects, when the connection of above-mentioned electronic switch,
Above-mentioned current limiting unit 91, which accesses, reduces the current value that above-mentioned constant-current control unit 5 exports in circuit, to change above-mentioned constant current control
The current value that unit 5 processed exports.
In the present embodiment, above-mentioned wireless charging circuit further includes indicator light 14, above-mentioned indicator light 14 and above-mentioned constant current control
Unit 5 processed is connected in series, and above-mentioned indicator light 14 is set to the front of above-mentioned shell.Above-mentioned indicator light 14 is used to indicate the wireless charging
Whether device is charged state.
It in the present embodiment, further include usb 13, above-mentioned usb 13 is connected in series with above-mentioned protection location 1, and
Above-mentioned usb 13 is set to above-mentioned housing sidewall.Above-mentioned usb 13 is for inputting external voltage.
In the present embodiment, above-mentioned shell 10 is polyhedron, and includes at least six faces.Preferably hexahedron.
In the present embodiment, the corner of above-mentioned shell 10 is rounded.Fillet is set by the corner of above-mentioned shell 10, is prevented
It scratches user and scratches electronic equipment.
In the present embodiment, above-mentioned 10 bottom of shell is equipped with Slippery proof foot pad, and above-mentioned 10 bottom of shell is at least provided on four
Slippery proof foot pad is stated, above-mentioned Slippery proof foot pad is arranged by midpoint equidistant ring array of above-mentioned housing bottom center.At above-mentioned shell bottom
Slippery proof foot pad is arranged in portion, prevents wireless charging device cunning from falling.
In the present embodiment, above-mentioned shell 10 is with a thickness of 5mm-15mm.Preferably 8mm.
In one embodiment, charging process, above-mentioned voltage feedback unit 8 detect that the demand voltage of electronic equipment is
The input voltage of external power supply is reduced to 5V by 5V, above-mentioned voltage transformation module 3, and above-mentioned current detecting unit 93 detects that electronics is set
Standby demand current is 1A, and above-mentioned current control unit 92 controls electronic switch conducting, above-mentioned current limiting unit 91 accessed above-mentioned
Constant-current control unit 5, so that the current value that above-mentioned constant-current control unit 5 exports is 1A.
In another embodiment, charging process, above-mentioned voltage feedback unit 8 detect the demand voltage of electronic equipment
For 9V, the input voltage of external power supply is reduced to 9V by above-mentioned voltage transformation module 3, and above-mentioned current detecting unit 93 detects electronics
The demand current of equipment is 2A, and above-mentioned current control unit 92 controls electronic switch and disconnects, and then disconnects above-mentioned current limiting unit 91
With the connection of above-mentioned constant-current control unit 5 so that above-mentioned constant-current control unit output current value be 2A.
By increasing voltage transformation module, so that wireless charging device has the function of exporting different voltages value, to meet
The charging voltage demand of distinct electronic apparatuses；By increasing current transformation unit, so that wireless charging device has output different
The function of current value, to meet the charge-current demands of distinct electronic apparatuses；The wireless charging circuit of the wireless charging device is set
Meter also has overcurrent, over-voltage, under-voltage protection function；Fillet is set by the corner of shell, prevent from scratching user and scratches electronics
Equipment；Slippery proof foot pad is set in housing bottom, prevents wireless charging device cunning from falling.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of wireless charging device, which is characterized in that including shell and wireless charging circuit, the wireless charging circuit is set to
The enclosure interior, the wireless charging circuit include protection location, the first rectification filtering unit, voltage transformation module, second
Rectification filtering unit, constant-current control unit, oscillation amplifying unit, transmitting coil and voltage feedback unit；The protection location,
One rectification filtering unit, voltage transformation module, the second rectification filtering unit, constant-current control unit, oscillation amplifying unit and transmitting
Coil is sequentially connected in series；The voltage feedback unit is connected with the voltage transformation module and the second rectification filtering unit respectively
Connection；The voltage feedback unit is according to the comparison signal control of the output voltage and reference voltage of second rectification filtering unit
The voltage transformation module is made to convert external voltage.
2. wireless charging device according to claim 1, which is characterized in that the protection location includes over-current protecting unit
And lightning protection unit, the over-current protecting unit and lightning protection unit are connected in series, and the lightning protection unit and first rectification are filtered
Wave unit is connected in series.
3. wireless charging device according to claim 1, which is characterized in that the voltage feedback unit includes voltage sample
Unit, voltage comparison unit and PWM modulation unit, the voltage sampling unit, voltage comparison unit and PWM modulation unit are successively
It is connected in series；And the voltage sampling unit and second rectification filtering unit are connected in series, the PWM modulation unit and institute
State voltage transformation module series connection；The voltage comparison unit is carried out according to the sampled signal of the voltage sampling unit and base
The comparison of quasi- voltage, the PWM modulation unit control the voltage transformation list according to the comparison signal of the voltage comparison unit
First voltage of transformation.
4. wireless charging device according to claim 1, which is characterized in that the oscillation amplifying unit includes oscillating unit
And amplifying unit, the oscillating unit and the amplifying unit are connected in series；And the oscillating unit and the current constant control list
Member is connected in series, and the amplifying unit and the transmitting coil are connected in series.
5. wireless charging device according to claim 1, which is characterized in that the wireless charging circuit further includes that electric current becomes
Unit is changed, the current transformation unit includes current detecting unit, current control unit and current limiting unit, the current detecting list
Member, current control unit and current limiting unit are sequentially connected in series；And the current detecting unit and the oscillation amplifying unit string
Connection, the current limiting unit and the constant-current control unit are connected in series；The current control unit is according to the current detecting
The detection signal of unit controls being switched in or out for the current limiting unit.
6. wireless charging device according to claim 1, which is characterized in that further include USB interface, the USB interface with
The protection location is connected in series, and the USB interface is set to the housing sidewall.
7. wireless charging device according to claim 1, which is characterized in that the shell is polyhedron, and is included at least
Six faces.
8. wireless charging device according to claim 7, which is characterized in that the corner of the shell is rounded.
9. wireless charging device according to claim 1, which is characterized in that the housing bottom is equipped with Slippery proof foot pad, institute
Housing bottom is stated at least provided with four Slippery proof foot pads, the Slippery proof foot pad is using the housing bottom center as the equidistant ring in midpoint
The setting of shape array.
10. wireless charging device according to claim 1, which is characterized in that the thickness of shell is 5mm-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820781216.XU CN208158203U (en) | 2018-05-23 | 2018-05-23 | Wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820781216.XU CN208158203U (en) | 2018-05-23 | 2018-05-23 | Wireless charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158203U true CN208158203U (en) | 2018-11-27 |
Family
ID=64387996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820781216.XU Expired - Fee Related CN208158203U (en) | 2018-05-23 | 2018-05-23 | Wireless charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450041A (en) * | 2018-12-14 | 2019-03-08 | 电子科技大学 | A kind of wireless charging device of multi gear position |
-
2018
- 2018-05-23 CN CN201820781216.XU patent/CN208158203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450041A (en) * | 2018-12-14 | 2019-03-08 | 电子科技大学 | A kind of wireless charging device of multi gear position |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20210523 |