CN107959353A - A kind of wireless charging device and method - Google Patents
A kind of wireless charging device and method Download PDFInfo
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- CN107959353A CN107959353A CN201711123926.XA CN201711123926A CN107959353A CN 107959353 A CN107959353 A CN 107959353A CN 201711123926 A CN201711123926 A CN 201711123926A CN 107959353 A CN107959353 A CN 107959353A
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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
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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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of wireless charging device and method, described device includes：Control module, full-bridge modules, coil module, power supply and at least one switch, the first end of full-bridge circuit are used for the first pulsewidth modulation logical signal for receiving control module transmission；The second end of full-bridge circuit is used for the DC signal for receiving power supply offer；After DC signal is converted into ac signal by full-bridge circuit, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected, when control module controlling switch closes, coil is used to, according to ac signal, produce pulse-width signal, the pulse-width signal produced according to coil for mobile terminal, matched with corresponding coil, carry out wireless charging so that one group of first pulsewidth modulation logical signal can be sent by control module, you can poll produces pulse-width signal on different coils, reduce the arrangement of driving chip, reduce the control difficulty of control module.
Description
Technical field
The present embodiments relate to wireless charging technical field, more particularly to a kind of wireless charging device and method.
Background technology
With the development of wireless charging technology, application of the wireless charging function in terminal device is increasingly popularized, and is had
The terminal device of wireless charging function is favored by user very much, and wireless charging is specifically referred to mobile terminal to be charged close to nothing
Micro USB electric appliance, is matched with the transmitting terminal of wireless charger by the receiving terminal of mobile terminal and charged.
At present, can include with reference to Fig. 1, the transmitting terminal of wireless charger：Control unit, power supply, multiple coils and with
The corresponding multiple driving chips of coil and multiple full-bridge circuit units, wherein, control unit, driving chip, full-bridge circuit unit
Connect one to one with coil, power supply is connected with full-bridge circuit unit, and different arteries and veins is sent to each coil by control unit
Width modulation (PWM, Pulse Width Modulation) logic control signal, different signals are driven by different driving chips
Afterwards, for ac signal and it is transmitted to through full-bridge circuit cell processing on corresponding coil, pwm signal is produced on coil, with
Matching is detected for the receiving terminal of mobile terminal.
But current wireless charging scheme needs control unit to send multigroup PWM logic control signals, and need to use
Multiple driving chips cause the control difficulty of control unit to increase, hardware cost increases with the different PWM logic control signals of correspondence
Add.
The content of the invention
The present invention provides a kind of wireless charging device and method, multigroup to solve to need control unit to send in the prior art
PWM logic control signals, and need to cause control single with the different PWM logic control signals of correspondence using multiple driving chips
The problem of control difficulty of member increases, hardware cost increase.
According to the first aspect of the invention, there is provided a kind of wireless charging device, the wireless charging device include：
Control module, full-bridge modules, coil module, power supply and at least one switch,
The full-bridge modules include at least one full-bridge circuit；The coil module includes at least one coil；It is described complete
Bridge circuit, the coil are identical with the quantity of the switch；
The first end of the full-bridge circuit is connected with the control module, first sent for receiving the control module
Pulsewidth modulation logical signal；
The second end of the full-bridge circuit is connected with the power supply, the DC signal provided for receiving the power supply；
The full-bridge circuit is used to, according to the first pulsewidth modulation logical signal received, the power supply be provided
DC signal is converted into ac signal；
3rd end of the full-bridge circuit is connected with corresponding coil, for sending the exchange telecommunications to the coil
Number；
The switch is connected with the control module, and the control module is used to control the switch closure or disconnects；Institute
State switch to be arranged between the power supply and the full-bridge circuit, or, the switch is arranged on the full-bridge circuit and the line
Between circle；
When the control module control switch closure, the coil is used to, according to the ac signal, produce
Pulse-width signal, for the pulse-width signal that mobile terminal is produced according to the coil, matches with corresponding coil, carries out
Wireless charging.
According to the second aspect of the invention, there is provided a kind of wireless charging method, the method are applied to wireless charging Denso
Put, the wireless charging method includes：
Control module sends the first pulsewidth modulation logical signal to the first end of full-bridge circuit；
Power supply provides DC signal to the full-bridge circuit；
The full-bridge circuit is according to the first pulsewidth modulation logical signal received, the direct current that the power supply is provided
Electric signal is converted into ac signal；
The full-bridge circuit sends the ac signal to coil；
When the control module control switch closure, the coil produces pulsewidth according to the ac signal
Modulated signal, for the pulse-width signal that mobile terminal is produced according to the coil, is matched with corresponding coil, is carried out wireless
Charging.
A kind of wireless charging device provided in an embodiment of the present invention and method, including control module, full-bridge modules, coil mould
Block, power supply and at least one switch, the first end of full-bridge circuit are connected with control module, for receiving the of control module transmission
One pulsewidth modulation logical signal；The second end of full-bridge circuit is connected with power supply, for receiving the DC signal of power supply offer；Entirely
For bridge circuit according to the first pulsewidth modulation logical signal received, the DC signal that power supply is provided is converted into ac signal
Afterwards, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected, wherein,
Switch can be arranged between power supply and full-bridge circuit, or, switch can also be arranged between full-bridge circuit and coil；Work as control
When module controlling switch closes, coil is used to, according to ac signal, pulse-width signal is produced, so that mobile terminal is according to line
The pulse-width signal produced is enclosed, is matched with corresponding coil, carries out wireless charging so that one can be sent by control module
The first pulsewidth modulation logical signal of group, you can poll produces pulse-width signal on different coils, reduces driving chip
Arrangement, reduce the control difficulty of control module.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for wireless charging device that background of invention provides；
Fig. 2 is a kind of structure diagram of wireless charging device provided in an embodiment of the present invention；
Fig. 3 is a kind of concrete structure schematic diagram of wireless charging device provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of another wireless charging device provided in an embodiment of the present invention；
Fig. 5 is a kind of step flow chart of wireless charging method provided in an embodiment of the present invention；
Fig. 6 is a kind of specific steps flow chart of wireless charging method provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, belongs to the scope of protection of the invention.
A kind of wireless charging device provided by the invention and side is discussed in detail below by several specific embodiments are enumerated
Method.
Reference Fig. 2, shows a kind of structure diagram of wireless charging device provided by the invention, wireless charging device bag
Include：Control module 10, full-bridge modules 20, coil module 30, power supply 40 and at least one switch 50.Switch 50 and control module 10
Connection, control module 10 are closed or disconnected for controlling switch 05；Switch 50 is arranged between power supply 40 and full-bridge modules 20,
Or, switch 50 is arranged between full-bridge modules 20 and coil module 30.
Specifically, with reference to Fig. 3, a kind of concrete structure schematic diagram of wireless charging device provided by the invention is shown, entirely
Bridge module 20 can include at least one full-bridge circuit；Coil module 30 includes at least one coil；Full-bridge circuit, coil and open
The quantity of pass 50 is identical, is sequentially connected between corresponding switch 50, full-bridge circuit and coil.It should be noted that shown in Fig. 3
A kind of concrete structure schematic diagram of wireless charging device is to be based on switch 50 in Fig. 2 to be arranged between power supply 40 and full-bridge modules 20
, the principle for the wireless charging device being arranged on based on switch 50 between full-bridge modules 20 and coil module 30 is identical with Fig. 3,
This is not repeated.
It should be noted that full-bridge modules 20 may be replaced by half-bridge module, i.e., include half-bridge electricity in half-bridge module
Road, is equally reached the purpose that the DC signal that power supply 40 provides is converted into ac signal, either full-bridge modules
20 or half-bridge module, all it is bridge circuit module, bridge circuit module is a kind of rectification circuit, is connected by four diode mouths
Into " bridge " formula structure, effect is that the alternating current of AC transformation circuit output is converted into unidirectional pulsating nature direct current.It is specifically chosen
Which kind of specific bridge circuit module, the embodiment of the present invention are not construed as limiting this.
In embodiments of the present invention, control module 10 can generate and export the first pulsewidth modulation logical signal, the first arteries and veins
Wide modulation logic signal is responsible for the logic control of pulse-width signal, and the first pulsewidth modulation logical signal is sent by control module 10
To full-bridge modules 20.
In full-bridge modules 20, under the action of the first pulsewidth modulation logical signal, direct current that power supply 40 is provided
Signal inversion is ac signal, concurrently send ac signal to coil module 30, ac signal to act on coil
On the coil of module 30, magnetic field is produced around coil, realization converts electrical energy into magnetic energy, finally produced on coil module 30
Pulse-width signal, i.e. ping signals, so that mobile terminal is according to corresponding line in pulse-width signal matched coil module 30
Circle, achievees the purpose that wireless charging.
Specifically, the first end A of full-bridge circuit is connected with control module 10, for receiving the first of the transmission of control module 10
Pulsewidth modulation logical signal；The second end B of full-bridge circuit is connected with power supply 40, for receiving the direct current telecommunications of the offer of power supply 40
Number；The DC signal that full-bridge circuit is used to, according to the first pulsewidth modulation logical signal received, power supply 40 be provided converts
For ac signal；3rd end C of full-bridge circuit is connected with corresponding coil, for sending ac signal to coil；Switch
50 are connected with control module 10, and control module 10 is closed or disconnected for controlling switch 50；Switch 50 is arranged on power supply 40 and complete
Between bridge circuit, or, switch 50 is arranged between full-bridge circuit and coil；When 10 controlling switch of control module closes, coil
For according to ac signal, producing pulse-width signal, for the pulse-width signal that mobile terminal is produced according to coil, with
Corresponding coil pairing, carries out wireless charging.
A kind of structure diagram of wireless charging device shown in Fig. 2 is to be arranged on power supply 40 and full-bridge mould based on switch 50
Between block 20.In the structure of wireless charging device shown in Fig. 2, by the control of control module 10, it can cause coil module
The corresponding switch closure of 30 coils disconnects, and when the switch is closed, has blocked power supply 40 to transmit direct current to full-bridge modules 20
Signal, therefore full-bridge modules 20 can not just produce ac signal, finally would not produce pulsewidth modulation in corresponding coil
Signal.
With reference to Fig. 4, the structure diagram of another wireless charging device provided by the invention is shown, it is another shown in Fig. 4
A kind of structure diagram of wireless charging device is to be arranged on based on switch 50 between full-bridge modules 20 and coil 30.Pass through control
The control of module 10, can cause the corresponding switch closure of 30 coil of coil module or disconnect, when the switch is closed, block
Full-bridge modules 20 transmit the ac signal after inversion to coil module 30, therefore would not produce pulsewidth in corresponding coil
Modulated signal.
With reference to the description to Fig. 2 and Fig. 4, by control of the control module 10 to switch, to reach in coil module 30
Pulse-width signal is produced on a certain coil, or does not produce the mesh of pulse-width signal on a certain coil in coil module 30
So that one group of first pulsewidth modulation logical signal can be sent by control module 10, you can poll is on different coils
Pulse-width signal is produced, reduces the arrangement of driving chip, reduces the control difficulty of control module 10.
In conclusion a kind of wireless charging device provided in an embodiment of the present invention, including control module, full-bridge modules, line
Circle module, power supply and at least one switch, the first end of full-bridge circuit are connected with control module, are sent for receiving control module
The first pulsewidth modulation logical signal；The second end of full-bridge circuit is connected with power supply, for receiving the direct current telecommunications of power supply offer
Number；For full-bridge circuit according to the first pulsewidth modulation logical signal received, the DC signal that power supply is provided is converted into exchange
After electric signal, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected,
Wherein, switch can be arranged between power supply and full-bridge circuit, or, switch can also be arranged between full-bridge circuit and coil；
When control module controlling switch closes, coil is used to, according to ac signal, pulse-width signal is produced, for mobile terminal
The pulse-width signal produced according to coil, is matched with corresponding coil, carries out wireless charging so that can pass through control module
Send one group of first pulsewidth modulation logical signal, you can poll produces pulse-width signal on different coils, reduces drive
The arrangement of dynamic chip, reduces the control difficulty of control module.
Optionally, further included with reference to Fig. 3, wireless charging device：Drive module 60, drive module 60 are arranged on control module
Between 10 and the first end A of full-bridge circuit, and drive module 60 connects with the first end A of control module 60 and full-bridge circuit respectively
Connect；Drive module 60 is used for the first pulsewidth modulation logical signal for receiving the transmission of control module 10, by the first pulsewidth modulation logic
The frequency of signal is enlarged into preset value, obtains the second pulsewidth modulation logical signal, and the second pulsewidth modulation logical signal is sent
To the first end A of full-bridge circuit.
In embodiments of the present invention, usual control module 10 is in the consideration based on performance and power, its first arteries and veins sent
The frequency of wide modulation logic signal is smaller, to meet design requirement of the control module 10 under performance and power limit, at this time
Need by drive module 60 under conditions of the first pulsewidth modulation logical signal that control unit 10 provides, pass through drive circuit
Method is carried out to the frequency of the first pulsewidth modulation logical signal, its frequency is amplified to the preset value required in practical application,
The second pulsewidth modulation logical signal is obtained, then the second pulsewidth modulation logical signal is sent to the first end A of the full-bridge circuit,
Full-bridge circuit is used for according to the second pulsewidth modulation logical signal received, and the DC signal that the power supply is provided turns
Turn to ac signal.Therefore, drive module 60 plays the first pulsewidth modulation logical signal that lifting control unit 10 is sent
The effect of driving force.
Optionally, after the second pulsewidth modulation logical signal that the first end A of full-bridge circuit is received, power supply can be provided
DC signal be converted into ac signal.
It should be noted that at some in special circumstances, such as without considering cost, simplify wireless charging device as far as possible
In the case of framework, control module 10 can break away from the limitation of performance and power at this time, directly transmit satisfactory pulsewidth modulation
Logical signal, eliminates drive module 60, reduces the cost and occupied space of wireless charging device.
Optionally, further included with reference to Fig. 3, wireless charging device：Detecting circuit module 70, the reception of detecting circuit module 70
End is connected with coil, and the transmitting terminal of detecting circuit module 70 is connected with control unit 10；Detecting circuit module 70, which is used to receive, moves
The signal of communication that dynamic terminal returns after being matched with corresponding coil, and signal of communication is forwarded to control unit 10.
In embodiments of the present invention, when wireless charging device is matched with mobile terminal, pulse-width signal need to be in each line
Poll on circle, could detect mobile terminal and be located at a certain coil, when mobile terminal and wireless charging device coil module 40
After a certain coil pairing, control module 10 need to learn the relevant information of the coil, to disconnect the remaining coil pair in addition to the coil
The switch answered, keeps the corresponding switch closure of the coil, therefore, can be by setting detecting circuit module 70, in mobile terminal
After being matched with a certain coil, signal of communication can be sent to the coil, and signal of communication is passed through into detecting circuit module by the coil
70 send to control module 10 so that control module 10 obtains the information of the coil.
For example, referring to Fig. 3, in polling procedure, if mobile terminal is matched with coil 302, mobile terminal is to coil 302
Signal of communication is sent, then signal of communication is forwarded to by control module 10 by detecting circuit module 70 by coil 302.
In conclusion a kind of wireless charging device provided in an embodiment of the present invention, including control module, full-bridge modules, line
Circle module, power supply and at least one switch, the first end of full-bridge circuit are connected with control module, are sent for receiving control module
The first pulsewidth modulation logical signal；The second end of full-bridge circuit is connected with power supply, for receiving the direct current telecommunications of power supply offer
Number；For full-bridge circuit according to the first pulsewidth modulation logical signal received, the DC signal that power supply is provided is converted into exchange
After electric signal, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected,
Wherein, switch can be arranged between power supply and full-bridge circuit, or, switch can also be arranged between full-bridge circuit and coil；
When control module controlling switch closes, coil is used to, according to ac signal, pulse-width signal is produced, for mobile terminal
The pulse-width signal produced according to coil, is matched with corresponding coil, carries out wireless charging so that can pass through control module
Send one group of first pulsewidth modulation logical signal, you can poll produces pulse-width signal on different coils, reduces drive
The arrangement of dynamic chip, reduces the control difficulty of control module.
With reference to Fig. 5, show a kind of step flow chart of wireless charging method provided by the invention, the described method includes with
Lower step：
Step 110, control module sends the first pulsewidth modulation logical signal to the first end of full-bridge circuit.
In this step, control module can generate and export the first pulsewidth modulation logical signal, and the first pulsewidth modulation is patrolled
The logic control that signal is responsible for pulse-width signal is collected, the first pulsewidth modulation logical signal is sent to full-bridge mould by control module
Block.
Step 120, power supply provides DC signal to the full-bridge circuit.
Step 130, the full-bridge circuit carries the power supply according to the first pulsewidth modulation logical signal received
The DC signal of confession is converted into ac signal.
In embodiments of the present invention, under the action of by the first pulsewidth modulation logical signal, direct current that power supply is provided
Signal inversion is ac signal, concurrently send ac signal to coil module, ac signal to act on coil mould
On the coil of block, magnetic field is produced around coil, realization converts electrical energy into magnetic energy, and pulsewidth tune is finally produced on coil module
Signal processed, i.e. ping signals, so that mobile terminal is according to corresponding coil in pulse-width signal matched coil module, reach nothing
The purpose of micro USB electricity.
It should be noted that full-bridge modules may be replaced by half-bridge module, i.e., include half-bridge circuit in half-bridge module,
It is equally reached the purpose that the DC signal for providing power supply is converted into ac signal, either full-bridge modules or half
Bridge module, is all bridge circuit module, and bridge circuit module is a kind of rectification circuit, and " bridge " formula is connected into by four diode mouths
Structure, effect are that the alternating current of AC transformation circuit output is converted into unidirectional pulsating nature direct current.It is specifically chosen which kind of is specific
Bridge circuit module, the embodiment of the present invention is not construed as limiting this.
Step 140, the full-bridge circuit sends the ac signal to coil.
Step 150, when the control module control switch closure, the coil according to the ac signal,
Pulse-width signal is produced, for the pulse-width signal that mobile terminal is produced according to coil, matches, carries out with corresponding coil
Wireless charging.
In this step, control of the control module to switch is passed through so that ac signal can act on coil module
Coil on, produce magnetic field around coil, realization converts electrical energy into magnetic energy, and pulsewidth modulation is finally produced on coil module
Signal, i.e. ping signals, so that mobile terminal is according to corresponding coil in pulse-width signal matched coil module, reach wireless
The purpose of charging.It is usually the sine wave signal of 175 kHz, a length of 0.12 during ping signals for example, the ping signals of generation
Second, the ping signal periods are 0.5 second, as the initial energy signal matched with mobile terminal receiving terminal.
In conclusion a kind of wireless charging method provided in an embodiment of the present invention, including control module, full-bridge modules, line
Circle module, power supply and at least one switch, the first end of full-bridge circuit are connected with control module, are sent for receiving control module
The first pulsewidth modulation logical signal；The second end of full-bridge circuit is connected with power supply, for receiving the direct current telecommunications of power supply offer
Number；For full-bridge circuit according to the first pulsewidth modulation logical signal received, the DC signal that power supply is provided is converted into exchange
After electric signal, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected,
Wherein, switch can be arranged between power supply and full-bridge circuit, or, switch can also be arranged between full-bridge circuit and coil；
When control module controlling switch closes, coil is used to, according to ac signal, pulse-width signal is produced, for mobile terminal
The pulse-width signal produced according to coil, is matched with corresponding coil, carries out wireless charging so that can pass through control module
Send one group of first pulsewidth modulation logical signal, you can poll produces pulse-width signal on different coils, reduces drive
The arrangement of dynamic chip, reduces the control difficulty of control module.
Reference Fig. 6, shows a kind of specific steps flow chart of wireless charging method provided by the invention, the method bag
Include following steps：
Step 210, control module sends the first pulsewidth modulation logical signal to drive module.
Step 220, drive module patrols first pulsewidth modulation according to the first pulsewidth modulation logical signal received
The frequency for collecting signal is enlarged into preset value, obtains the second pulsewidth modulation logical signal.
Step 230, drive module sends the second pulsewidth modulation logical signal to the first end of the full-bridge circuit.
With reference to above-mentioned steps 210 to step 230, control module in the consideration based on performance and power, its send first
The frequency of pulsewidth modulation logical signal is smaller, to meet design requirement of the control module under performance and power limit, at this time
Need by drive module under conditions of the first pulsewidth modulation logical signal that control unit provides, by drive circuit to
The frequency of one pulsewidth modulation logical signal carries out method, its frequency is amplified to the preset value required in practical application, obtains
Second pulsewidth modulation logical signal, then the second pulsewidth modulation logical signal is sent to the first end of the full-bridge circuit, full-bridge
Circuit is used to, according to the second pulsewidth modulation logical signal received, the DC signal that the power supply provides be converted into
Ac signal.Therefore, drive module plays the driving force for the first pulsewidth modulation logical signal that lifting control unit is sent
Effect.
Step 240, full-bridge circuit provides the power supply according to the second pulsewidth modulation logical signal received
DC signal is converted into ac signal.
Optionally, the specific descriptions of step 240 are referred to above-mentioned steps 130, and details are not described herein again.
Step 250, the full-bridge circuit sends the ac signal to coil.
Optionally, the specific descriptions of step 250 are referred to above-mentioned steps 140, and details are not described herein again.
Step 260, when the control module control switch closure, the coil according to the ac signal,
Pulse-width signal is produced, for the pulse-width signal that mobile terminal is produced according to coil, matches, carries out with corresponding coil
Wireless charging.
Optionally, if the quantity of full-bridge circuit, the coil and the switch is more than one, step 260 can also wrap
Enclosed tool step 2601, sub-step 2602, sub-step 2603, sub-step 2604.
Sub-step 2601, according to poll rule, the closure each switched by control module control or disconnection.
Sub-step 2602, if the detecting circuit module receives the signal of communication for a coil, passes through the control
Molding block controls the corresponding switch closure of the coil, disconnects remaining switch.
With reference to above-mentioned sub-step 2601 to sub-step 2602, there is provided a kind of each coil pulse-width signal poll work
Mode, poll rule is the mode how a kind of decision-making provides peripheral equipment service, also known as " program-controlled import and export ".Poll rule
Concept be, by control module timing send inquiry, sequentially inquire whether each peripheral equipment needs its service, have and give
Service, inquires again next periphery after service, then constantly in cycles.Specifically, with reference to Fig. 3, in the first pulsewidth modulation
Before logical signal arrives, 10 controlling switch 501 of control module to 50n polls closes, the pulse-width signal knot on coil
Shu Hou, 10 controlling switch 501 of control module to 50n polls disconnect, it is assumed that when coil 402 is matched with mobile terminal receiving terminal, then
10 controlling switch 502 of control unit closes, and controls others to switch off, and mobile terminal switch-on coil 402 is filled at this time
Electricity.
Sub-step 2603, controls all switches to close by the control module.
Sub-step 2604, if the detecting circuit module receives the signal of communication for a coil, passes through the control
Molding block controls the corresponding switch closure of the coil, disconnects remaining switch.
With reference to above-mentioned sub-step 2603 to sub-step 2604, there is provided a kind of each coil pulse-width signal works at the same time
Mode, specifically, with reference to Fig. 3,10 controlling switch 501 of control module is closed to 50n, then can be produced on each coil
Pulse-width signal, 10 controlling switch 501 of control module to 50n simultaneously switch off, then all without generation pulsewidth tune on each coil
Signal processed, before the arrival of the first pulsewidth modulation logical signal, or after pulse-width signal terminates, control module 10 controls
Switch 501 is closed at or disconnects to 50n, it is assumed that when coil 402 is matched with mobile terminal receiving terminal, then control unit 10 controls
The closure of switch 502, and control others to switch off, mobile terminal switch-on coil 402 charges at this time.
Step 270, detecting circuit module receives the signal of communication that mobile terminal returns after being matched with corresponding coil.
Step 280, the signal of communication is forwarded to described control unit by the detecting circuit module.
With reference to above-mentioned steps 270 to step 280, when wireless charging device is matched with mobile terminal, pulse-width signal needs
The poll on each coil, could detect mobile terminal and be located at a certain coil, when mobile terminal and wireless charging device coil
After a certain coil pairing of module, control module need to learn the relevant information of the coil, to disconnect the remaining line in addition to the coil
Corresponding switch is enclosed, keeps the corresponding switch closure of the coil, therefore, can be by setting detecting circuit module, mobile whole
End is with that after the pairing of a certain coil, can send signal of communication to the coil, and signal of communication is passed through detecting circuit mould by the coil
Block is sent to control module so that control module obtains the information of the coil.
For example, referring to Fig. 2, in polling procedure, if mobile terminal is matched with coil 302, mobile terminal is to coil 302
Signal of communication is sent, then signal of communication is forwarded to by control module 10 by detecting circuit module 70 by coil 302.
In conclusion a kind of wireless charging method provided in an embodiment of the present invention, including control module, full-bridge modules, line
Circle module, power supply and at least one switch, the first end of full-bridge circuit are connected with control module, are sent for receiving control module
The first pulsewidth modulation logical signal；The second end of full-bridge circuit is connected with power supply, for receiving the direct current telecommunications of power supply offer
Number；For full-bridge circuit according to the first pulsewidth modulation logical signal received, the DC signal that power supply is provided is converted into exchange
After electric signal, ac signal is sent to coil by the 3rd end of full-bridge circuit；Control module controlling switch is closed or disconnected,
Wherein, switch can be arranged between power supply and full-bridge circuit, or, switch can also be arranged between full-bridge circuit and coil；
When control module controlling switch closes, coil is used to, according to ac signal, pulse-width signal is produced, for mobile terminal
The pulse-width signal produced according to coil, is matched with corresponding coil, carries out wireless charging so that can pass through control module
Send one group of first pulsewidth modulation logical signal, you can poll produces pulse-width signal on different coils, reduces drive
The arrangement of dynamic chip, reduces the control difficulty of control module.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to scope of the claims.
Claims (10)
1. a kind of wireless charging device, it is characterised in that the wireless charging device includes：
Control module, full-bridge modules, coil module, power supply and at least one switch,
The full-bridge modules include at least one full-bridge circuit；The coil module includes at least one coil；The full-bridge electricity
Road, the coil are identical with the quantity of the switch；
The first end of the full-bridge circuit is connected with the control module, the first pulsewidth sent for receiving the control module
Modulation logic signal；
The second end of the full-bridge circuit is connected with the power supply, the DC signal provided for receiving the power supply；
The full-bridge circuit is used for according to the first pulsewidth modulation logical signal received, the direct current that the power supply is provided
Electric signal is converted into ac signal；
3rd end of the full-bridge circuit is connected with corresponding coil, for sending the ac signal to the coil；
The switch is connected with the control module, and the control module is used to control the switch closure or disconnects；It is described to open
Pass is arranged between the power supply and the full-bridge circuit, or, the switch be arranged on the full-bridge circuit and the coil it
Between；
When the control module control switch closure, the coil is used to, according to the ac signal, produce pulsewidth
Modulated signal, for the pulse-width signal that mobile terminal is produced according to the coil, is matched with corresponding coil, is carried out wireless
Charging.
2. wireless charging device according to claim 1, it is characterised in that the wireless charging device further includes：
Drive module,
The drive module setting is between the control module and the first end of the full-bridge circuit, and the drive module point
First end not with the control module and the full-bridge circuit is connected；
The drive module is used to receive the first pulsewidth modulation logical signal that the control module is sent, by first pulsewidth
The frequency of modulation logic signal is enlarged into preset value, obtains the second pulsewidth modulation logical signal, and by second pulsewidth modulation
Logical signal is sent to the first end of the full-bridge circuit.
3. wireless charging device according to claim 2, it is characterised in that the full-bridge circuit is used for what basis received
The first pulsewidth modulation logical signal, ac signal is converted into by the DC signal that the power supply provides, including：
The full-bridge circuit is used for according to the second pulsewidth modulation logical signal received, the direct current that the power supply is provided
Electric signal is converted into ac signal.
4. wireless charging device according to claim 1, it is characterised in that the wireless charging device further includes：
Detecting circuit module,
The receiving terminal of the detecting circuit module is connected with the coil, transmitting terminal and the control of the detecting circuit module
Unit connects；
The detecting circuit module is used to receive the signal of communication that the mobile terminal returns after matching with corresponding coil, and will
The signal of communication is forwarded to described control unit.
5. a kind of wireless charging method, it is characterised in that the method is applied to wireless charging device, the wireless charging device
Including the device as described in Claims 1-4 is any, the wireless charging method includes：
Control module sends the first pulsewidth modulation logical signal to the first end of full-bridge circuit；
Power supply provides DC signal to the full-bridge circuit；
The full-bridge circuit is according to the first pulsewidth modulation logical signal received, the direct current telecommunications that the power supply is provided
Number it is converted into ac signal；
The full-bridge circuit sends the ac signal to coil；
When the control module control switch closure, the coil produces pulsewidth modulation according to the ac signal
Signal, for the pulse-width signal that mobile terminal is produced according to the coil, matches with corresponding coil, carries out wireless charging
Electricity.
6. according to the method described in claim 5, it is characterized in that, the control module sends the to the first end of full-bridge circuit
The step of one pulsewidth modulation logical signal, including：
The control module sends the first pulsewidth modulation logical signal to drive module；
The drive module is according to the first pulsewidth modulation logical signal received, by the first pulsewidth modulation logical signal
Frequency is enlarged into preset value, obtains the second pulsewidth modulation logical signal；
The drive module sends the second pulsewidth modulation logical signal to the first end of the full-bridge circuit.
7. according to the method described in claim 6, it is characterized in that, the full-bridge circuit is according to first pulsewidth received
Modulation logic signal, the step of DC signal that the power supply provides is converted into ac signal, including：
The full-bridge circuit is according to the second pulsewidth modulation logical signal received, the direct current telecommunications that the power supply is provided
Number it is converted into ac signal.
8. according to the method described in claim 5, it is characterized in that, the method further includes：
Detecting circuit module receives the signal of communication that the mobile terminal returns after being matched with corresponding coil；
The signal of communication is forwarded to described control unit by the detecting circuit module.
9. if according to the method described in claim 8, it is characterized in that, the full-bridge circuit, the coil and the switch
Quantity is more than one,
Then described when the control module control switch closure, the coil produces arteries and veins according to the ac signal
The step of wide modulated signal, including：
According to poll rule, the closure each switched by control module control or disconnection；
If the detecting circuit module receives the signal of communication for a coil, the line is controlled by the control module
Corresponding switch closure is enclosed, disconnects remaining switch.
10. if according to the method described in claim 8, it is characterized in that, the full-bridge circuit, the coil and the switch
Quantity is more than one,
Then described when the control module control switch closure, the coil produces arteries and veins according to the ac signal
The step of wide modulated signal, including：
All switch closures are controlled by the control module；
If the detecting circuit module receives the signal of communication for a coil, the line is controlled by the control module
Corresponding switch closure is enclosed, disconnects remaining switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711123926.XA CN107959353B (en) | 2017-11-14 | 2017-11-14 | A kind of wireless charging device and method |
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| CN201711123926.XA CN107959353B (en) | 2017-11-14 | 2017-11-14 | A kind of wireless charging device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193838A (en) * | 2018-09-20 | 2019-01-11 | 深圳市鑫研创科技有限公司 | A kind of double charging circuits of wireless charging and the more charging circuits of wireless charging |
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| CN103560562A (en) * | 2013-11-11 | 2014-02-05 | 天津工业大学 | Location self-adaptation wireless charging coupler |
| CN203660624U (en) * | 2014-01-17 | 2014-06-18 | 武汉大学 | Wireless charging device with multiple transmitting terminals and single receiving terminal |
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| CN107959353B (en) | 2019-11-19 |
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