CN209462057U - A kind of QI wireless charger of effective shielding leakage field - Google Patents
A kind of QI wireless charger of effective shielding leakage field Download PDFInfo
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- CN209462057U CN209462057U CN201920459012.9U CN201920459012U CN209462057U CN 209462057 U CN209462057 U CN 209462057U CN 201920459012 U CN201920459012 U CN 201920459012U CN 209462057 U CN209462057 U CN 209462057U
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- circuit board
- leakage field
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- wireless charger
- emitting module
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a kind of QI wireless chargers of effectively shielding leakage field, it is related to wireless charging technical field, aim to solve the problem that existing wireless charger will form leakage field during use, the component that will lead on circuit board is affected by magnetic fields and performance is changed, and causes the technical problem that charger operation is unstable.Its key points of the technical solution are that including shell, circuit board, emitting module, circuit board is arranged inside housings, and emitting module setting is provided with control chip on the board surface, on circuit board；Electro-magnetic screen layer is provided between emitting module and circuit board, the surrounding that electro-magnetic screen layer is located at emitting module is provided with extension board, and electro-magnetic screen layer is fixed on circuit boards.Reach and effectively leakage field has been shielded, mitigating leakage field influences the normal work of component on circuit board, improves the effect of the stability of charger.
Description
Technical field
The utility model relates to wireless charging technical fields, more specifically, it relates to a kind of QI of effectively shielding leakage field
Wireless charger.
Background technique
Wireless charger refers to the charger being connected on the terminal device for needing to charge without traditional charging power cord,
Electric energy, Inductive coupling techniques are transmitted by using the alternating magnetic field generated between coil using newest wireless charging technology
The bridge of connection charging base station and equipment will be become.
Existing Authorization Notice No. is the Chinese patent of CN207664717U, discloses a kind of wireless charger, including wireless
Charger body and cradle, wireless charger main body include face-piece and hardware bottom case, and hardware bottom case is equipped with hardware contact, plastic cement
Bottom case and emitting module, plastic pan are equipped with battery core and PCBA-1, PCBA-2,3pin winding displacement 2, and emitting module is equipped with annular emission
Module, annular emission module are placed in above battery core；Cradle includes cradle face-piece and cradle bottom case, and cradle face-piece is set
There is cradle PCBA, cradle bottom case is equipped with balance weight iron, plays needle PCBA and 3pin winding displacement 1；The hardware of wireless charger main body touches
Point connection cradle, after hardware contact incude successfully with cradle bullet needle PCBA, understand out-put supply, wireless charger power supply at
Function, wireless charger give the charging of mobile devices for having QI standard by annular emission module.
But existing wireless charger can distribute electromagnetic field, a part of quilt of electromagnetic field outward during use
Receiver receives to form electric current, and another fraction distributes to form leakage field, will lead to the component on circuit board by magnetic field
Influence and performance is changed, cause charger operation unstable, therefore to be improved.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of QI of effectively shielding leakage field without
Line charge electric appliance has and effectively shields to leakage field, and mitigating leakage field influences the normal work of component on circuit board, and raising is filled
The advantage of the stability of electric appliance.
To achieve the above object, the utility model provides following technical solution:
A kind of QI wireless charger of effective shielding leakage field, including shell, circuit board, emitting module, the circuit board are set
It sets inside housings, the emitting module setting on the board surface, is provided with control chip on the circuit board；The hair
It penetrates and is provided with electro-magnetic screen layer between component and circuit board, the surrounding that the electro-magnetic screen layer is located at emitting module is provided with extension
Plate, the electro-magnetic screen layer are fixed on circuit boards.
By using above-mentioned technical proposal, the setting of electro-magnetic screen layer and extension board can be to the leakage field of emitting module generation
Absorb and heat is converted by vortex, plays good magnetism isolating effect, alleviate leakage field for the electricity on circuit board
The influence of sub- component improves the stability of charger operation.
Further, heat conduction silicone is provided between the electro-magnetic screen layer and circuit board.
By using above-mentioned technical proposal, under the action of electromagnetism, electro-magnetic screen layer can generate heat by vortex, thermally conductive
The setting of layer of silica gel is convenient for conducting the heat on electro-magnetic screen layer, consequently facilitating heat distributes.
Further, temperature sensor, the temperature sensor and control chip electricity are provided on the electro-magnetic screen layer
Connection.
By using above-mentioned technical proposal, the setting of temperature sensor is real-time convenient for carrying out to the temperature on electro-magnetic screen layer
Monitoring, consequently facilitating control chip analyzes temperature data.
Further, radiator fan is provided on the circuit board, the radiator fan is electrically connected with control chip.
By using above-mentioned technical proposal, the setting of radiator fan is by disturbing air, thus accelerated heat
It distributes, and the revolving speed of radiator fan can be adjusted in time according to the instruction of control chip, to adapt to the temperature on electro-magnetic screen layer.
Further, the radiator fan is provided with cooling fin, the cooling fin and radiation air close to the side of circuit board
Fan fits.
By using above-mentioned technical proposal, the setting of cooling fin increases the contact area with air, radiation air of being more convenient for
Fan distributes the heat on cooling fin.
Further, the cooling fin is provided with heating column, the heating column and heat conduction silicone far from the side of fan
It communicates.
By using above-mentioned technical proposal, the setting of heating column is convenient for conducting the heat at heat conduction silicone to cooling fin
Place is simultaneously distributed by radiator fan.
Further, beep alarm device, the beep alarm device and control chip electricity are provided on the circuit board
Connection.
By using above-mentioned technical proposal, the setting of beep alarm device be convenient for when controlling chip operation exception to
User makes prompting, to take timely measure, improves the safety coefficient of charger.
Further, several heat release holes are provided on the shell, the heat release hole side wall is provided with heat dissipation reinforcing plate.
By using above-mentioned technical proposal, the setting of heat release hole is convenient for the air exchange inside and outside shell, consequently facilitating by shell
The heat in internal portion comes out；The setting of heat dissipation reinforcing plate improves the heating conduction of heat release hole side wall, is more convenient for shell
Internal heat is conducted to hull outside.
In conclusion the utility model has the following beneficial effects:
1, the technology adsorbed using the leakage field that electromagnetic shielding word and extension board generate emitting module, to generate
Reduce the effect that the leakage field that emitting module generates has an impact the electronic component on circuit board；
2, using the technology of temperature sensor is arranged on electro-magnetic screen layer, thus generate to the temperature of electro-magnetic screen layer into
The effect of row real time monitoring；
3, using the technology of radiator fan is arranged on circuit boards, to generate convenient for electro-magnetic screen layer is passed through vortex
The effect that the heat of generation distributes in time.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the QI wireless charger of effectively shielding leakage field in embodiment；
Fig. 2 is in embodiment for showing the schematic diagram of structure at electro-magnetic screen layer；
Fig. 3 is in embodiment for showing the schematic diagram of structure at circuit board.
In figure: 1, shell；11, circuit board；111, chip is controlled；12, emitting module；13, heat release hole；131, heat dissipation enhancing
Plate；2, electro-magnetic screen layer；21, extension board；22, heat conduction silicone；23, temperature sensor；3, radiator fan；31, cooling fin；
311, heating column；4, beep alarm device.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
A kind of QI wireless charger of effective shielding leakage field, referring to Fig.1 comprising shell 1, circuit board 11, emitting module
12.Circuit board 11 is arranged inside shell 1, and emitting module 12 is arranged on 11 surface of circuit board.Emitting module 12 is enamel-cover copper
Coil is provided with control chip 111 on circuit board 11.Controlling chip 111 includes STM8S005K6 single-chip microcontroller and IDT
IDTP9237 charging main control chip, single-chip microcontroller and charging main control chip control connect.The charging main control chip is wireless with WPC(
Charge alliance) announce QI wireless charging agreement, with by control chip 111 emitting module 12 is controlled, to emit
Electromagnetism transmits energy by electromagnetic induction.
Referring to Fig.1, several heat release holes 13 are provided on shell 1, heat release hole 13 is arranged on the side wall of shell 1, heat release hole
13 run through 1 side wall of shell.13 side wall of heat release hole is provided with heat dissipation reinforcing plate 131, and heat dissipation reinforcing plate 131 is iron plate, heat dissipation enhancing
Plate 131 runs through the side wall of shell 1.In order to the air circulation inside shell 1, and will be inside shell 1 by heat dissipation reinforcing plate 131
Heat be transmitted to outside shell 1 and distributed.
Referring to Fig. 2, electro-magnetic screen layer 2 is provided between emitting module 12 and circuit board 11, electro-magnetic screen layer 2 is steel disc,
Electro-magnetic screen layer 2 is fixed within the case 1.The surrounding that electro-magnetic screen layer 2 is located at emitting module 12 is provided with extension board 21, extension board
21 are integrally formed with electro-magnetic screen layer 2.Electro-magnetic screen layer 2 is fixed on circuit board 11, to pass through electro-magnetic screen layer 2 and extension board
21 absorb the leakage field given out from emitting module 12, to achieve the effect that electromagnetic shielding.
Referring to Fig. 2, heat conduction silicone 22 is provided between electro-magnetic screen layer 2 and circuit board 11, heat conduction silicone 22 passes through
The mode of smearing is attached to electro-magnetic screen layer 2 on the surface of circuit board 11, to absorb electromagnetic heating in electro-magnetic screen layer 2
When the heat generated on electro-magnetic screen layer 2 is conducted.
Referring to Fig. 2, temperature sensor 23 is provided on electro-magnetic screen layer 2, temperature sensor 23 is contact temperature sensing
Device 23.Temperature sensor 23 is cemented on electro-magnetic screen layer 2 and is mounted among electro-magnetic screen layer 2, temperature sensor 23 and control
111 signal of coremaking piece connection, to be measured in real time to the temperature on electro-magnetic screen layer 2 and give real-time data transmission to control core
Piece 111.
Referring to Fig. 2, radiator fan 3 is provided on circuit board 11, radiator fan 3 is fixed on circuit board 11 far from electromagnetic shielding
On one side surface of layer 2, radiator fan 3 and the control control of chip 111 are connected.Radiator fan 3 is speed-regulating fan, and wind speed can pass through
Chip 111 is controlled to adjust, it is scattered to be carried out according to the temperature controlled fan revolving speed on electro-magnetic screen layer 2 to electro-magnetic screen layer 2
Heat.
Referring to Fig. 2, radiator fan 3 is provided with cooling fin 31 close to the side of circuit board 11, and cooling fin 31 is copper sheet.Heat dissipation
Piece 31 fits with radiator fan 3, and cooling fin 31 is fixed on radiator fan 3 by way of cementation, to increase contact area,
Consequently facilitating radiator fan 3 radiates to circuit board 11 and charger internal.
Referring to Fig. 3, cooling fin 31 is provided with heating column 311 far from the side of radiator fan 3, and heating column 311 is copper post, leads
Plume 311 is threaded on circuit board 11.Heating column 311 is threadedly coupled with cooling fin 31, heating column 311 and heat conduction silicone
22 communicate, and heating column 311 is mounted in heat conduction silicone 22, the heat in heat conduction silicone 22 are transferred out to pass through heat dissipation
Piece 31 and radiator fan 3 radiate.
Referring to Fig. 3, beep alarm device 4 is provided on circuit board 11, beep alarm device 4 is voltage-type buzzer.Bee
The warning device 4 that rings is connected with the control control of chip 111.Beep alarm device 4 is fixed by welding on circuit board 11, to control
The temperature data that coremaking piece 111 receives sends a signal to beep alarm device 4 when being more than control 111 internal preset value of chip and does
It alarms out.
Working principle is as follows:
When wireless charger is worked, the leakage field that emitting module 12 generates is electromagnetically shielded by the grounding wire the absorption of layer 2, electromagnetism
Shielded layer 2 generates eddy-current heating after absorbing electromagnetism.Heat is conducted by heating column 311 to cooling fin by heat conduction silicone 22
At 31.
Radiator fan 3 on cooling fin 31 disturbs the air around cooling fin 31, so that air is accelerated to flow, with
Promote distributing for heat.Air with heat is discharged from heat release hole 13, and the heat dissipation reinforcing plate 131 of 13 side wall of heat release hole can be right
The heat of charger internal absorb and distribute outward.So that leakage field, which is converted into heat, gives out 1 outside of shell, prevent
Only the electronic component on circuit board 11 is influenced by leakage field, to improve the stability of charger.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of QI wireless charger of effectively shielding leakage field, including shell (1), circuit board (11), emitting module (12), described
Circuit board (11) setting is internal in shell (1), and the emitting module (12) is arranged on circuit board (11) surface, the circuit board
(11) control chip (111) is provided on；It is characterized by: being provided with electricity between the emitting module (12) and circuit board (11)
Magnetic masking layer (2), the surrounding that the electro-magnetic screen layer (2) is located at emitting module (12) are provided with extension board (21), the electromagnetism
Shielded layer (2) is fixed on circuit board (11).
2. the QI wireless charger of effective shielding leakage field according to claim 1, it is characterised in that: the electro-magnetic screen layer
(2) it is provided between circuit board (11) heat conduction silicone (22).
3. the QI wireless charger of effective shielding leakage field according to claim 2, it is characterised in that: the electro-magnetic screen layer
(2) it is provided on temperature sensor (23), the temperature sensor (23) is electrically connected with control chip (111).
4. the QI wireless charger of effective shielding leakage field according to claim 3, it is characterised in that: the circuit board (11)
On be provided with radiator fan (3), the radiator fan (3) with control chip (111) be electrically connected.
5. the QI wireless charger of effective shielding leakage field according to claim 4, it is characterised in that: the radiator fan
(3) bottom end is provided with cooling fin (31), and the cooling fin (31) fits with circuit board (11).
6. the QI wireless charger of effective shielding leakage field according to claim 5, it is characterised in that: the cooling fin (31)
Side far from fan is provided with heating column (311), and the heating column (311) communicates with heat conduction silicone (22).
7. the QI wireless charger of effective shielding leakage field according to claim 3, it is characterised in that: the circuit board (11)
On be provided with beep alarm device (4), the beep alarm device (4) with control chip (111) be electrically connected.
8. the QI wireless charger of effective shielding leakage field according to claim 1, it is characterised in that: on the shell (1)
It is provided with several heat release holes (13), heat release hole (13) side wall is provided with heat dissipation reinforcing plate (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920459012.9U CN209462057U (en) | 2019-04-04 | 2019-04-04 | A kind of QI wireless charger of effective shielding leakage field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920459012.9U CN209462057U (en) | 2019-04-04 | 2019-04-04 | A kind of QI wireless charger of effective shielding leakage field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209462057U true CN209462057U (en) | 2019-10-01 |
Family
ID=68047702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920459012.9U Active CN209462057U (en) | 2019-04-04 | 2019-04-04 | A kind of QI wireless charger of effective shielding leakage field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209462057U (en) |
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2019
- 2019-04-04 CN CN201920459012.9U patent/CN209462057U/en active Active
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