CN108306428A - Charging equipment method for detecting position based on wireless charging - Google Patents
Charging equipment method for detecting position based on wireless charging Download PDFInfo
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- CN108306428A CN108306428A CN201810036603.5A CN201810036603A CN108306428A CN 108306428 A CN108306428 A CN 108306428A CN 201810036603 A CN201810036603 A CN 201810036603A CN 108306428 A CN108306428 A CN 108306428A
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- Prior art keywords
- charging
- coil
- detecting position
- induction coil
- transmitter 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
-
- 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
Abstract
The invention discloses a kind of charging equipment method for detecting position based on wireless charging, includes the following steps：Step S1：Charging mechanism off working state, waits for whether the first inductive signal arrives；Step S2：It exports the first pumping signal and starts charging mechanism；Step S3：Obtain the induced current of induction coil；Step S4：By the induced electricity flow valuve of acquisition compared with predetermined inductive current value, the induced current significant change of part induction coil is judged whether there is；Step S5：As the band of position of charging equipment, the charging transmitter unit that the second pumping signal of output makes the work of the charging transmitter unit in the band of position simultaneously close off outside the band of position makes charging mechanism enter charged state in the region that the induction coil of induced current significant change is formed.The advantage of the invention is that：It opens whether charging mechanism detection charging equipment accesses without intermittence, improves the service life of wireless charger.
Description
Technical field
The invention belongs to charging technique field more particularly to a kind of charging equipment position detection sides based on wireless charging
Method.
Background technology
Wireless charging is actually the equipment to be charged using electromagnetic induction principle, is similar to transformer, is sending
Respectively there are one coils with both ends are received, and send end-coil and are connected with line power supply generation electromagnetic signal, the coil-induced transmission of receiving terminal
The electromagnetic signal at end is to generate electric current to electrical equipment.As shown in fig. 6, electric current, which flows through coil, will produce magnetic field, other do not lead to
The coil of electricity just will produce electric current close to magnetic field, and wireless charging just applies this physical phenomenon.
In the prior art, wireless charging structure includes wiring board, magnetic sheet and coil, and antifreeze plate is arranged on usual wiring board
(soft magnetic materials), then coil is arranged on antifreeze plate, wiring board control coil generate electromagnetic field, to charging equipment (internal coil) into
Row charging.
In the prior art, effective charged area of charging mechanism is smaller, and user needs charging equipment placing corresponding region
It could charge.In order to expand effective charged area range, the multiple coil composition charging emission matrix of generally use；However,
The prior art still remains following defect：
1, the actually active charged area of charging equipment is constant, causes ineffective energy consumption to increase, virtually reduces charge efficiency.
2, it at least needs intermittent charging end-coil of opening that could realize the detection of charging equipment, increases driving circuit
Operating pressure influences the service life of wireless charger.
Invention content
Regarding the issue above, the present invention provides a kind of charging equipment position detection side based on wireless charging
Method can realize charging equipment position detection, open charging mechanism without intermittent, while while expanding chargeable region
Improve charge efficiency.
In order to achieve the above objectives, present invention employs following technical proposals：Charging equipment position inspection based on wireless charging
Survey method includes the following steps：
Step S1：Charging mechanism off working state, waits for whether the first inductive signal arrives, if it is not, continuing waiting for；If
It is to execute step S2；Wherein, the first inductive signal generates for object variation in induction charging region；
Step S2：It exports the first pumping signal and starts charging mechanism, wherein multiple charging transmitter units are same in charging mechanism
When generate electromagnetic signal；
Step S3：Obtain the induced current of induction coil, wherein be respectively provided with a line of induction in each charging transmitter unit
Circle；
Step S4：By the induced electricity flow valuve of acquisition compared with predetermined inductive current value, part induction coil is judged whether there is
Induced current significant change, if it is not, charge closing mechanism, re-executes step S1；If so, executing step S5；Wherein, it presets
Induced electricity flow valuve is the induced current of induction coil output when starting charging mechanism in the unloaded state with the first pumping signal
Value；
Step S5：The region that the induction coil of induced current significant change is formed as the band of position of charging equipment,
Exporting the second pumping signal makes the charging transmitter unit work in the band of position simultaneously close off the charging transmitting list outside the band of position
Member makes charging mechanism enter charged state.
In the above-mentioned methods, the charging equipment band of position is determined using two-step method, first judges the object variation of charged area,
Charging equipment access and its specific location region are determined whether again, and then start charging mechanism；It is opened without intermittence
It opens whether charging mechanism detection charging equipment accesses, while charge efficiency is improved while expanding chargeable region.
In the above-mentioned methods, the first pumping signal and the second pumping signal may be the same or different.Preferably,
One pumping signal is low-power level signal, is detected for charging equipment, and the second pumping signal is high-power signal, is used for charging equipment
Carry out wireless charging.
In the above-mentioned methods, further comprising the steps of：
In the charge state, when detecting the first inductive signal, first charge closing mechanism, then re-execute step S1.
In the above-mentioned methods, the first inductive signal is generated by induction module, and generation mechanism is：
Object variation causes the weight change or pressure change of charging mechanism, induction module to incude the change in charged area
Change and generates the first inductive signal.
In above-mentioned method for detecting position, the induction module uses weighing sensor or pressure sensor.
In above-mentioned method for detecting position, the induction module is arranged below charging mechanism.
In above-mentioned method for detecting position, the current detection module is wholely set in assist side.
In above-mentioned method for detecting position, the coil that the charging transmitter unit includes magnetic sheet and is arranged on the magnetic sheet,
There is at least one protrusion, the coil to be formed and around protrusion by an at least conducting wire coiling in the one side of the magnetic sheet
Position；The induction coil is formed and by an at least conducting wire coiling around boss.
The protrusion of design, can effectively shorten magnetic circuit, to further improve charge efficiency.
Secondly, raised its can also further increase magnetic field intensity, so as to further reduce whole volume, design
Design requirement that is more reasonable and meeting current miniaturization.
In addition, due to convex design, the induced current of induction coil is increased, easily realizes current detecting, while
The size of induction coil can be reduced.
Furthermore the protrusion of design forms the effect of several heat conduction and heat dissipation, monoblock magnetic sheet can be further increased
Heat dissipation performance.
In above-mentioned method for detecting position, the magnetic sheet and protrusion are integrally formed.
It is integrally formed, which raises structural strengths and processing and manufacturing easy to produce.
In above-mentioned method for detecting position, the connection structure that projects through is fixed on magnetic sheet.
Connection structure includes grafting or bonding etc. mode.
In above-mentioned method for detecting position, the height of projection is equal or different.
The setting of height can be set according to actual requirement.
In above-mentioned method for detecting position, the projection diameter is equal or unequal.
The different designs of diameter are adapted to different coils, to be suitable for various carriers to be charged.
In above-mentioned method for detecting position, the raised lateral cross section is square.
It is, of course, also possible to be any one in hexagonal, round and diamond shape.
In above-mentioned method for detecting position, multiple charging transmitter units form charging together in parallel or series
Emission matrix.Wiring board can control simultaneously it is each charging transmitter unit work, can also independent control any one charging hair
Penetrate the work of unit.
In above-mentioned method for detecting position, the magnetic sheet that difference charging transmitter unit uses is integrally formed.So as to reduce
Leakage field further increases magnetic field intensity.
In above-mentioned method for detecting position, the magnetic sheet and protrusion are made of soft magnetic materials.Soft magnetic materials, materials
Conveniently and process simpler.Preferably, soft magnetic materials includes but not limited to Ferrite Material, modeling magnetic material and iron powder materials
Deng.
In above-mentioned method for detecting position, when multiple charhing units are arranged, in being spaced apart and part between charhing unit
The magnetic direction generated between charhing unit forms closed magnetic circuit in turn on the contrary.
It can form the spatial distribution in magnetic field to the structure only with a small amount of several coils, effectively reduce point of coil
Cloth quantity effectively reduces manufacturing cost without being respectively arranged coil in each position.
In above-mentioned method for detecting position, when multiple charging transmitter units are set, closely it is arranged between the transmitter unit that charges
And the magnetic direction that generates of each charhing unit is identical and then forms one direction emission matrix.
In above-mentioned method for detecting position, the coil panel is around the cyclic annular square structure of formation.The design of the structure, can
To make full use of existing space resources, can in a limited space in provide bigger magnetic field.
Rectangular structure can be fully solved the gap formed between two adjacent coils of circular coil, space point
Cloth is more closely knit and reasonable.
Compared with prior art, the advantage of the invention is that：
1, it opens whether charging mechanism detection charging equipment accesses without intermittence, improves the service life of wireless charger.
2, charging mechanism is made to improve charge efficiency while expanding chargeable region.
3, the protrusion designed, increases the induced current of induction coil, can easily realize current detecting, while also may be used
To reduce the size and the number of turns of induction coil.Design requirement that is more reasonable and meeting current miniaturization.
Description of the drawings
Fig. 1 is structural schematic diagram provided by the invention.
Fig. 2 is another viewing angle constructions schematic diagram provided by the invention.
Fig. 3 is the loop construction schematic diagram of another embodiment provided by the invention.
Fig. 4 is magnetic direction inverse state schematic diagram provided by the invention.
Fig. 5 is the loop construction schematic diagram of another embodiment provided by the invention.
Fig. 6 is prior art construction schematic diagram provided by the invention.
Fig. 7 is position detecting device block diagram provided by the invention.
Fig. 8 is the flow diagram of method for detecting position provided by the invention.
In figure, wiring board 1, magnetic sheet 2, coil 3, protrusion 4.
Specific implementation mode
Below be invention specific embodiment and in conjunction with attached drawing, technical scheme of the present invention will be further described, but
Invention is not limited to these embodiments.
In the prior art, wireless charging system generates pumping signal by driving circuit makes transmitting terminal coil generating electromagnetic believe
Number so realize to charging equipment wireless charging；And in order to realize the detection of charging equipment, currently, generally being connect by charging equipment
Enter to cause Parameters variation to realize the detection of charging equipment, therefore, charging mechanism need at least to work under small-power state or
Intermittence opens (for example opening within 1 second primary), and charging is realized by detecting light condition and with the different of state coil parameter are carried
The detection of equipment.Which increases the operating pressure of driving circuit, influences the service life of wireless charger.Meanwhile the length of coil
Phase opens (at least intermittent), causes the waste of the energy to a certain extent.
The charging mechanism that wireless charging system generally includes wiring board and is electrically connected with it, charging mechanism include at least one
A charging transmitter unit, wiring board is for controlling the charging transmitter unit.
Wireless charging system is in the platy structure of hardness or in soft sheet mat structure.
Such as wireless charging board or mouse pad etc..
Idea of the invention is that charging emission matrix is formed to expand chargeable region based on multiple charging transmitter units, and
Corresponding charging transmitter unit is opened according to the position of charging equipment, and does not have similar application in the prior art.
Referring to Fig. 8, it is shown the flow diagram of method for detecting position of the present invention, is included the following steps：
Step S1：Charging mechanism off working state, waits for whether the first inductive signal arrives, if it is not, continuing waiting for；If
It is to execute step S2；Wherein, the first inductive signal generates for object variation in induction charging region；
Step S2：It exports the first pumping signal and starts charging mechanism, wherein multiple charging transmitter units are same in charging mechanism
When generate electromagnetic signal；
Step S3：Obtain the induced current of induction coil, wherein be respectively provided with a line of induction in each charging transmitter unit
Circle；
Step S4：By the induced electricity flow valuve of acquisition compared with predetermined inductive current value, part induction coil is judged whether there is
Induced current significant change, if it is not, charge closing mechanism, re-executes step S1；If so, executing step S5；Wherein, it presets
Induced electricity flow valuve is the induced current of induction coil output when starting charging mechanism in the unloaded state with the first pumping signal
Value；
Step S5：The region that the induction coil of induced current significant change is formed as the band of position of charging equipment,
Exporting the second pumping signal makes the charging transmitter unit work in the band of position simultaneously close off the charging transmitting list outside the band of position
Member makes charging mechanism enter charged state.
In the above-mentioned technical solutions, the charging equipment band of position is determined using two-step method, first judges the object of charged area
Variation, then determine whether charging equipment access and its specific location region, and then start charging mechanism；Without interval
Property open charging mechanism detection charging equipment whether access.Simultaneously charge efficiency is improved while expanding chargeable region.
Preferably, the first pumping signal and the second pumping signal may be the same or different.It is highly preferred that first
Pumping signal is low-power level signal, for charging equipment detect, the second pumping signal be high-power signal, for charging equipment into
Row wireless charging.
Preferably, further comprising the steps of：
In the charge state, when detecting the first inductive signal, first charge closing mechanism, then re-execute step S1.From
And can when charging equipment removes timely charge closing mechanism, or when there is new charging equipment access, redefine and fill
Electric region, and support multiple charging equipments while charging.
Preferably, the first inductive signal is generated by induction module, generation mechanism is：
Object variation causes the weight change or pressure change of charging mechanism, induction module to incude the change in charged area
Change and generates the first inductive signal.Therefore, as long as the state change of charging mechanism can trigger the first inductive signal.
Referring to Fig. 7, position detecting device of the present invention includes induction module, current detection module and at least one line of induction
Circle, wherein the induction module is used to detect charging mechanism state change and generates the first inductive signal and be sent to wiring board；
Wiring board makes charging mechanism generate electromagnetic signal according to the first inductive signal output drive signal；Charging mechanism includes at least one
Charge transmitter unit；The induction coil is arranged in the transmitter unit that charges, the electromagnetism generated for induction charging transmitter unit
Signal simultaneously generates induced current；The current detection module is connected with induction coil and wiring board, for detecting induced current
And it is sent to wiring board；
Whether the final determining charging equipment of induced current variation that wiring board is generated according to induction coil accesses charged area,
And the coil that charging transmitter unit is controlled with this is continued on or is turned off.
Multiple charging transmitter units form charging emission matrix and form trickle charge area as a preferred technical solution,
An induction coil is arranged in domain, each transmitter unit that charges, and wiring board changes most according to the induced current that each induction coil generates
The band of position of charging equipment, and the position according to the coil working in the location information of the charging equipment control band of position are determined eventually
The coil set outside region does not work.
Using above-mentioned technological means, charged area can be expanded by the way that multiple charging transmitter units are arranged, and can reach
Energy saving purpose.It opens whether charging mechanism detection charging equipment accesses without intermittence simultaneously, improves wireless charging
The service life of electric appliance.
Above-mentioned technological means principle is as follows, determines the charging equipment band of position using two-step method, first determines whether charging equipment
Whether it is placed on charging mechanism, only determines that charging equipment is placed on charging mechanism and just open charging mechanism.When coil is opened
When opening work, under the pumping signal of same intensity and frequency, the magnetic field generated is certain, and therefore, induction coil is at this
The induced current generated in magnetic field is also certain, and the induced electricity flow valuve of charging mechanism light condition is prestored in assist side.
When placing charging equipment on it, due to built-in charge coil in charging equipment, the presence of the charge coil can cause accordingly
The changes of magnetic field in region, the induced current that corresponding induction coil generates can also change, can be determined that and fill by aforesaid way therewith
The band of position of electric equipment, that is, the region where the induction coil of induced current variation is the specific position of charging equipment
Region., whereas if the induced current that each coil generates is unchanged, then the equipment that explanation is placed on charging unit is not supported
Wireless charging function closes coil.
Further, induction module uses weighing sensor or pressure sensor, can be tightly disposed in charging mechanism
It is beneath, when charging equipment is placed on the top of charging mechanism, gravimetric value or pressure value change and thus generate first
Inductive signal.
Further, current detection module can be wholely set in assist side, corresponding for the setting of each induction coil
Current detection circuit or multiple induction coils pass through selection circuit be multiplexed a current detection circuit.
Further, induction coil is formed by an at least conducting wire around boss coiling.Due to convex design, increase
Big induced current, easily realizes current detecting, while can also reduce the size of induction coil.
As shown in Figs. 1-2, the coil 3 that the charging transmitter unit includes magnetic sheet 2 and is arranged on the magnetic sheet 2, magnetic sheet 1
Upper on one side that there is an at least protrusion 4, protrusion 4 to be in vertical distribution with magnetic sheet 2, which raises structural strengths for the structure, meanwhile, design
Protrusion, magnetic circuit can be effectively shortened, to further improve charge efficiency.Secondly, raised its can also be carried further
High magnetic field intensity designs design that is more reasonable and meeting current miniaturization and wants so as to further reduce whole volume
It asks.
The coil 3 is formed and by an at least conducting wire coiling around boss.1 control coil of wiring board generates
Magnetic field.
The thickness of coil 3 is less than the height of protrusion.
Prioritization scheme, magnetic sheet 2 and protrusion 4 are integrally formed and magnetic sheet 2 is made with protrusion 4 of soft magnetic materials.
4 height of protrusion of prioritization scheme, the present embodiment is equal or different.
4 diameter of protrusion of prioritization scheme, the present embodiment is equal or unequal.
4 lateral cross section of protrusion of prioritization scheme, the present embodiment is square.
Prioritization scheme, 3 winding escalator of coil of the present embodiment circlewise square structure.
Prioritization scheme, multiple charging transmitter units of the present embodiment form charging transmitting square together in parallel or series
Battle array.Due to forming the emission matrix that charges, to considerably increase effective chargeable range.
Prioritization scheme, the magnetic sheet 2 that difference charging transmitter unit uses are integrally formed.It is integrally formed it and not only increases structure
Intensity further improves production efficiency, but also can reduce leakage field, further increases magnetic field intensity.
When multiple charging transmitter units are arranged in wireless charging system, trickle charge region is formed.To expand charging zone
Domain can simultaneously charge to multiple charging equipments.
As shown in figure 4, when multiple charhing units are arranged in wireless charging system, in being spaced apart and part between charhing unit
The magnetic direction generated between charhing unit forms closed magnetic circuit in turn on the contrary.
The design of the structure can form the spatial distribution in magnetic field, that is, multiple coils only with a small amount of several coils
Between generate the magnetic field of opposed polarity respectively, can form closed magnetic circuit between coil opposite polarity in this way.Effectively reduce line
The distributed quantity of circle effectively reduces manufacturing cost without being respectively arranged coil in each position.
One side of the coil 3 far from magnetic sheet 2 is located in the same horizontal plane.
The thickness of coil 3 is equal to the height of protrusion 4.
As shown in figure 3, the distributed architecture of another embodiment coil, principle is essentially identical, Gu therefore not to repeat here, and
Different place is：
When multiple charging transmitter units are arranged in wireless charging system, closely setting and each charging between the transmitter unit that charges
The magnetic direction that unit generates is identical and then forms one direction emission matrix.More there is choosing, coil panel is around the cyclic annular rectangular knot of formation
Structure.The design of the structure can make full use of existing space resources, can in a limited space in provide bigger magnetic
.
Rectangular structure can be fully solved the gap formed between two adjacent coils of circular coil, space point
Cloth is more closely knit and reasonable.
As shown in figure 5, the distributed architecture of another embodiment coil, principle is essentially identical, Gu therefore not to repeat here, and
Different place is：
Coil 3 is circle and array distribution.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. the charging equipment method for detecting position based on wireless charging, which is characterized in that include the following steps：
Step S1：Charging mechanism off working state, waits for whether the first inductive signal arrives, if it is not, continuing waiting for；If so, holding
Row step S2；Wherein, the first inductive signal generates for object variation in induction charging region；
Step S2：It exports the first pumping signal and starts charging mechanism, wherein multiple charging transmitter units produce simultaneously in charging mechanism
Raw electromagnetic signal；
Step S3：Obtain the induced current of induction coil, wherein be respectively provided with an induction coil in each charging transmitter unit；
Step S4：By the induced electricity flow valuve of acquisition compared with predetermined inductive current value, the sense of part induction coil is judged whether there is
Induced current significant change, if it is not, charge closing mechanism, re-executes step S1；If so, executing step S5；Wherein, predetermined inductive
Current value is the induced electricity flow valuve of induction coil output when starting charging mechanism in the unloaded state with the first pumping signal；
Step S5：The region that the induction coil of induced current significant change is formed is as the band of position of charging equipment, output
The charging transmitter unit that second pumping signal makes the work of the charging transmitter unit in the band of position simultaneously close off outside the band of position makes
Charging mechanism enters charged state.
2. method for detecting position according to claim 1, which is characterized in that further comprising the steps of：
In the charge state, when detecting the first inductive signal, first charge closing mechanism, then re-execute step S1.
3. method for detecting position according to claim 1 or 2, which is characterized in that the first inductive signal passes through induction module
It generates, generation mechanism is：
Object variation causes the weight change or pressure change of charging mechanism, induction module to incude the variation simultaneously in charged area
Generate the first inductive signal.
4. method for detecting position according to claim 3, which is characterized in that the induction module using weighing sensor or
Person's pressure sensor.
5. method for detecting position according to claim 1 or 2, which is characterized in that obtained and incuded by current detection module
The induced current of coil.
6. method for detecting position according to claim 1 or 2, which is characterized in that the charging transmitter unit includes magnetic sheet
(2) and coil (3) on the magnetic sheet (2) is set, there are at least one raised (4) in the one side of the magnetic sheet (1), it is described
Coil (3) is formed by an at least conducting wire around boss coiling；The induction coil by an at least conducting wire around
Boss coiling forms.
7. method for detecting position according to claim 6, which is characterized in that be closely arranged between charging transmitter unit and every
The magnetic direction that a charhing unit generates is identical and then forms one direction emission matrix.
8. method for detecting position according to claim 7, which is characterized in that described coil (3) winding escalator is circlewise square
Shape structure；Described protrusion (4) lateral cross section is square.
9. method for detecting position according to claim 6, which is characterized in that in being spaced apart and part between charhing unit
The magnetic direction generated between charhing unit forms closed magnetic circuit in turn on the contrary.
10. method for detecting position according to claim 6, which is characterized in that the magnetic sheet that difference charging transmitter unit uses
(2) it is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810036603.5A CN108306428A (en) | 2018-01-15 | 2018-01-15 | Charging equipment method for detecting position based on wireless charging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810036603.5A CN108306428A (en) | 2018-01-15 | 2018-01-15 | Charging equipment method for detecting position based on wireless charging |
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| CN108306428A true CN108306428A (en) | 2018-07-20 |
Family
ID=62869053
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| CN111786475A (en) * | 2020-08-06 | 2020-10-16 | 成都晓桥科技有限公司 | Wireless charging device and charging method for low-power electronic equipment |
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Application publication date: 20180720 |
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