CN114157050A - Wireless charging circuit and method with low standby power consumption - Google Patents
Wireless charging circuit and method with low standby power consumption Download PDFInfo
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- CN114157050A CN114157050A CN202210005004.3A CN202210005004A CN114157050A CN 114157050 A CN114157050 A CN 114157050A CN 202210005004 A CN202210005004 A CN 202210005004A CN 114157050 A CN114157050 A CN 114157050A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 230000010355 oscillation Effects 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 6
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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Abstract
The application relates to a wireless charging circuit with low standby power consumption and a method thereof, relating to the technical field of wireless charging circuits, wherein the wireless charging circuit with low standby power consumption comprises a wireless transmitting circuit which is connected with a standby control circuit; the standby control circuit includes: the switch module is connected with the wireless transmitting circuit and is used for controlling the operation modes of the wireless transmitting circuit, wherein the operation modes comprise a standby mode and a working mode; the voltage sampling module is used for sampling voltage to obtain sampling voltage; the comparison module is preset with a preset voltage, compares the sampling voltage with the preset voltage and outputs a comparison signal based on a comparison result; and the timing module sends a timing signal to the switch module based on the comparison signal, and the switch module controls the operation mode of the wireless transmitting circuit based on the timing signal. The charging base has the effect of saving the electric energy consumed when the charging base is in the power-on state and is not loaded.
Description
Technical Field
The present application relates to the field of wireless charging technologies, and in particular, to a wireless charging circuit and method with low standby power consumption.
Background
With the development of science and technology, more and more wireless charging devices appear in daily life. When wireless charging is carried out, the charger and the electric device can transmit energy through a magnetic field, so that energy transmission can be realized without a connecting wire between the charger and the electric device.
In conventional cordless rechargeable toothbrushes, the charging base often uses an LC resonant transmission circuit. The LC resonance transmitting circuit works in a resonance state of fixed frequency, and the resonance loop forms a high-frequency magnetic field through a magnetic rod; when the toothbrush is inserted into the charging base, the coil in the toothbrush is used as a secondary receiving magnetic field of the transformer, induction current is generated through electromagnetic induction, and the battery in the toothbrush is charged through the induction current.
To keep the battery from overcharging, the induced voltage is typically limited to a fixed level; thus, when the toothbrush is inserted into the charging base, the entire circuit will maintain a relatively constant load condition. When the toothbrush is removed from the charging base, the emitter base is in a free-running state, subject to system excitation and its inherent dissipation, and the charging base is still at a higher power level.
With respect to the related art in the above, the inventors found that: the user generally keeps the charging base in a power-on state for a long time, and the charging base wastes electric energy because the charging base is in a long-term power consumption state.
Disclosure of Invention
In order to save the electric energy consumed when the charging base is in a power-on state and has no load, the application provides a wireless charging circuit with low standby power consumption and a method.
In a first aspect, the following technical solution is adopted in a wireless charging circuit with low standby power consumption provided by the present application.
A wireless charging circuit with low standby power consumption comprises a wireless transmitting circuit, wherein the wireless transmitting circuit is connected with a standby control circuit; the standby control circuit includes:
the switch module is connected with the wireless transmitting circuit and is used for controlling the operation modes of the wireless transmitting circuit, wherein the operation modes comprise a standby mode and a working mode;
the voltage sampling module is used for sampling voltage to obtain sampling voltage;
the comparison module is preset with a preset voltage, compares the sampling voltage with the preset voltage and outputs a comparison signal based on a comparison result; and the number of the first and second groups,
a timing module that sends a timing signal to the switch module based on the comparison signal, the switch module controlling an operation mode of the wireless transmission circuit based on the timing signal;
when the wireless transmitting circuit is in an operating mode, the wireless transmitting circuit is in a free oscillation state; when the wireless transmitting circuit is in the standby mode, the wireless transmitting circuit is in a free oscillation state in a first time length T1 and is in a vibration-off mode in a second time length T2, and the first time length T1 and the second time length T2 form a cycle period.
By adopting the technical scheme, when the wireless transmitting circuit is in a working mode, the wireless transmitting circuit is in a free oscillation state; when the wireless transmitting circuit is in the standby mode, the wireless transmitting circuit is in the free oscillation state in the first time length T1 and is in the vibration stopping mode in the second time length T2, and the power consumption of the whole wireless charging circuit is smaller than that of the wireless transmitting circuit in the free oscillation state, so that the wireless charging circuit is in very low standby power consumption.
Optionally, the comparison module and the timing module are digital circuit modules, and the comparison module and the timing module are disposed in the controller U1; or,
the comparison module and the timing module are analog circuit modules.
Optionally, the voltage sampling module includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the comparison module, and the other end is grounded.
Through adopting above-mentioned technical scheme, when electric toothbrush inserts in the base that charges, the electric current in whole return circuit increases, and the voltage increase of sixth resistor R6 both ends and then lead to the sampling voltage increase, can obtain the sampling voltage through the voltage at sixth resistor R6 both ends.
Optionally, the switch module includes a third transistor Q3, a control terminal of the third transistor Q3 is connected to the output terminal of the timing module, and an output terminal of the third transistor Q3 is connected to the wireless transmitting circuit; or,
the switch module comprises an NMOS tube, the drain electrode of the NMOS tube is connected with the wireless transmitting circuit, and the grid electrode of the NMOS tube is connected with the output end of the timing module.
Optionally, the third transistor Q3 is an NPN transistor, a collector of the third transistor Q3 is connected to the wireless transmitting circuit, and a base of the third transistor Q3 is connected to the output end of the timing module.
Optionally, the wireless charging circuit further includes a second capacitor C2 for filtering the input power of the standby control circuit.
Optionally, the wireless charging circuit further includes an isolation resistor R5.
Optionally, a ratio of the second time period T2 to the first time period T1 is not less than 4.
By adopting the technical scheme, the average power of the wireless charging circuit and the time length for waiting for starting charging after the electric toothbrush is inserted into the charging base are determined by the size relation between the first time length T1 and the second time length T2; the greater the ratio of the second time period T2 to the first time period T1, the lower the average power of the wireless charging circuit, which also means the longer the time period from when the electric toothbrush is inserted into the wireless cradle to when the capacitive toothbrush begins to charge; the smaller the ratio of the second time period T2 to the first time period T1 is, the higher the average power of the wireless charging circuit is, and the shorter the time period from the time when the electric toothbrush is inserted into the wireless base to the time when the electric toothbrush starts to be charged is, the power saving and quick charging of the wireless toothbrush can be achieved by setting the proportional relationship between the second time period T2 and the first time period T1.
Optionally, an electrolytic capacitor E1 is further disposed between the standby control circuit and the wireless transmission circuit.
In a second aspect, the following technical solution is adopted in the wireless charging method with low standby power consumption provided by the present application.
A wireless charging method with low standby power consumption, the wireless charging circuit of any one of the above, comprising:
after the wireless charging circuit is powered on, entering a standby mode; in the standby mode, controlling the wireless transmitting circuit to be in a vibration stopping state within a second time length T2; controlling the wireless transmitting circuit to be in a free oscillation state within a first time period T1;
judging whether the sampling voltage is greater than the preset voltage or not; if not, continuing to maintain the working mode; if yes, entering a working mode; after entering the working mode, controlling the wireless transmitting circuit to be in a free oscillation state; and the number of the first and second groups,
and judging whether the sampling voltage is greater than the preset voltage in real time, and if not, switching from the working mode to the standby mode.
By adopting the technical scheme, after the wireless charging circuit is powered on, the wireless transmitting circuit is controlled to enter the standby module through the switch module. In the standby mode, in a first time period T1, the wireless transmitting circuit keeps a free oscillation state after oscillation starting; during the second time period T2, the wireless transmitting circuit stops vibrating and does not output. After wireless toothbrush inserts the base that charges, when wireless transmitting circuit is in the free oscillation state, whole wireless charging circuit's electric current increase, and the sampling voltage is greater than preset voltage this moment, keeps the free oscillation state after the wireless transmitting circuit starts to vibrate to can continuously charge for wireless toothbrush. And then, whether the wireless toothbrush is still charged is continuously judged according to the size relation between the sampling voltage and the preset voltage, when the wireless toothbrush is separated from the charging base, the sampling voltage is smaller than the preset voltage, and the wireless transmitting circuit is controlled again to enter a standby mode.
Drawings
Fig. 1 is a schematic circuit diagram of a wireless transmitting circuit in the related art;
fig. 2 is a block diagram of a circuit structure of a wireless charging circuit with low standby power consumption according to the present application;
fig. 3 is a schematic circuit diagram of a wireless charging circuit with low standby power consumption according to an embodiment of the present application;
fig. 4 is a flowchart of a wireless charging method with low standby power consumption according to an embodiment of the present application;
in the figure, 1, a wireless transmitting circuit; 2. a standby control circuit; 21. a switch module; 22. a voltage sampling module; 23. a comparison module; 24. and a timing module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-4 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
One implementation form of a related art wireless transmission circuit 1 is shown in fig. 1, and the related art wireless transmission circuit 1 can be applied to a charging base of a wireless toothbrush. The form of the wireless transmitting circuit 1 is various, and it should be understood that the wireless transmitting circuit 1 in fig. 1 is only an example for facilitating understanding of the technical solution of the present application, and the protection scope of the present application is not limited thereby. It can be seen that when the charging base of the wireless toothbrush is in a power-on state, even if the wireless toothbrush is not inserted into the charging base, the wireless transmitting circuit 1 is always in a free oscillation state, and the charging base is still in a higher power level due to system excitation and self inherent consumption, so that more electric energy is wasted.
In order to save electric energy consumed when the charging base is in a power-on state and has no load, the embodiment of the application discloses a wireless charging circuit with low standby power consumption. Referring to fig. 2, as an embodiment of a wireless charging circuit with low standby power consumption, a wireless charging circuit with low standby power consumption includes a wireless transmission circuit 1 and a standby control circuit 2 connected to the wireless transmission circuit 1. The wireless transmission circuit 1 may be the wireless transmission circuit 1 in fig. 1, or may be another wireless transmission circuit 1 capable of realizing the same function.
Referring to fig. 2, as one embodiment of the standby control circuit 2, the standby control circuit 2 includes a switch module 21, a voltage sampling module 22, a comparison module 23, and a timing module 24. The switch module 21 is connected to the wireless transmitting circuit 1, the switch module 21 is used for controlling the operation mode of the wireless transmitting circuit 1, and the operation mode of the wireless transmitting circuit 1 includes a standby mode and an operating mode. When the wireless transmitting circuit 1 is in the working mode, the wireless transmitting circuit 1 is in a free oscillation state; when the wireless transmitting circuit 1 is in the standby mode, the wireless transmitting circuit 1 is in the free oscillation state in the first time period T1 and is in the oscillation stop mode in the second time period T2, the power consumption of the whole wireless charging circuit is smaller than that of the wireless transmitting circuit 1 in the free oscillation state, and the first time period T1 and the second time period T2 form a cycle period, so that the wireless charging circuit is in very low standby power consumption.
Referring to fig. 2, the voltage sampling module 22 is configured to perform voltage sampling to obtain a sampled voltage; specifically, when the electric toothbrush is inserted into the charging base, the current of the whole circuit is increased, thereby causing the sampling voltage to be increased, and whether the electric toothbrush is inserted into the charging base can be reflected through the change of the sampling voltage. The comparison module 23 is preset with preset voltages, and the preset voltages may be set in various ways, and as one of the preset voltages, the sampled voltage VLL when the electric toothbrush is not inserted into the charging base and the sampled voltage Vth when the electric toothbrush is inserted into the charging base may be averaged to obtain the preset voltage. The comparison module 23 compares the sampled voltage with a preset voltage and outputs a comparison signal based on the comparison result. The timing module 24 sends a timing signal to the switch module 21 based on the comparison signal, and the switch module 21 controls the operation mode of the wireless transmission circuit 1 based on the timing signal.
Referring to fig. 2 and 3, as one embodiment of the comparison module 23 and the timing module 24, the comparison module 23 and the timing module 24 are digital circuit modules, and the comparison module 23 and the timing module 24 are disposed in the controller U1. In another embodiment, the comparing module 23 and the timing module 24 may be analog circuit modules.
Referring to fig. 3, when the comparing module 23 and the timing module 24 are disposed in the controller U1, the voltage sampling module 22 includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the comparing module 23, and the other end is grounded, that is, one end of the sixth resistor R6 is connected to one of the input ports of the controller U1, and the other end is grounded. When the wireless toothbrush is inserted into the charging dock, the current flowing through the sixth resistor R6 increases, the voltage across the sixth resistor R6 increases, and the sampled voltage input to the controller U1 increases.
Referring to fig. 3, as one mode of the switch module 21, the switch module 21 includes a third transistor Q3, a control terminal of the third transistor Q3 is connected to the output terminal of the timing module 24, that is, the control terminal of the third transistor Q3 is connected to one of the output terminals of the controller U1, the output terminal of the third transistor Q3 is connected to the wireless transmitting circuit 1, and a fourth resistor R4 is further connected between the output terminal of the controller U1 and the third transistor Q3. As one embodiment of the third transistor Q3, the third transistor Q3 is an NPN-type transistor, the collector of the third transistor Q3 is connected to the wireless transmitting circuit 1, the base is connected to the output terminal of the controller U1, and the emitter of the third transistor Q3 is grounded. In other embodiments, the switch module 21 may also be a PNP triode, an NMOS, a PMOS transistor, etc., and the same function can be realized only by simply configuring the circuit. For example, when the switch module 21 is an NMOS transistor, the drain of the NMOS transistor is connected to the wireless transmitting circuit 1, and the gate of the NMOS transistor is connected to the output terminal of the timing module 24, i.e., the gate of the timing module is connected to the output terminal of the controller U1.
The operation principle of the switching module 21 will be described below with the switching module 21 being the third transistor Q3 and the third transistor Q3 being an NPN-type transistor.
When the wireless toothbrush is not inserted into the charging base, the current of the whole wireless charging circuit is small, the voltage at two ends of the sixth resistor R6 is VLL, namely the sampling voltage is VLL, at the moment, the sampling voltage is smaller than the preset voltage, the controller U1 outputs a low level in the first time period T1 through the controller U1 based on the size relation between the sampling voltage and the preset voltage, at the moment, the third triode Q3 is cut off, the third triode Q3 does not destroy the oscillation starting condition of the wireless transmitting circuit 1, and the wireless transmitting circuit 1 keeps a free oscillation state after oscillation starting; in the second time period T2, the controller U1 outputs a high level, the third transistor Q3 is turned on, and the oscillation starting condition of the wireless transmitting circuit 1 is destroyed, at this time, the wireless transmitting circuit 1 stops oscillating and does not output. When the wireless toothbrush is inserted into the charging base and the wireless transmitting circuit 1 is in a free oscillation state, the current of the whole wireless charging circuit is increased, the voltage at the two ends of the sixth resistor R6 is Vth, namely the sampling voltage is Vth, the sampling voltage is greater than the preset voltage, the controller U1 outputs a low level, the third triode Q3 is cut off, and the wireless transmitting circuit 1 keeps the free oscillation state after oscillation starting, so that the wireless toothbrush can be charged.
As one of the embodiments of the standby control circuit 2, the ratio of the second time period T2 to the first time period T1 is not less than 4. The magnitude relationship between the first time period T1 and the second time period T2 determines the average power of the wireless charging circuit and the time period for the electric toothbrush to wait for charging after being inserted into the charging base. The greater the ratio of the second time period T2 to the first time period T1, the lower the average power of the wireless charging circuit, which also means the longer the time period from when the electric toothbrush is inserted into the wireless cradle to when the capacitive toothbrush begins to charge. The smaller the ratio of the second time period T2 to the first time period T1 is, the higher the average power of the wireless charging circuit is, and the shorter the time period from the time when the electric toothbrush is inserted into the wireless base to the time when the electric toothbrush starts to be charged is, the power saving and quick charging of the wireless toothbrush can be achieved by setting the proportional relationship between the second time period T2 and the first time period T1.
As another embodiment of the wireless charging circuit, the wireless charging circuit further includes a second capacitor C2 for filtering the input power of the standby control circuit 2, one end of the second capacitor C2 is connected to the positive electrode of the power supply, and the other end of the second capacitor C2 is grounded. The wireless charging circuit further comprises an isolation resistor R5, one end of the isolation resistor R5 is connected with the other output port of the controller U1, the other end of the isolation resistor R5 is connected between the sixth resistor R6 and the ground, and the isolation resistor R5 can be set or not set according to actual requirements. An electrolytic capacitor E1 is also provided between the standby control circuit 2 and the wireless transmission circuit 1.
Referring to fig. 4, based on the wireless charging circuit, the present application further provides a wireless charging method with low standby power consumption, including the following steps:
after the wireless charging circuit is powered on, executing the step S101 and entering a standby mode; in the standby mode, the wireless transmitting circuit 1 is controlled to be in a vibration-off state within a second time length T2; controlling the wireless transmission circuit 1 to be in a free oscillation state in the first time period T1;
step S102, judging whether the sampling voltage is larger than a preset voltage in real time; if not, returning to execute the step S101 and continuing to maintain the working mode; if so, step S103 is performed.
Step S103, entering a working mode; after entering the working mode, the wireless transmission circuit 1 is controlled to be in a free oscillation state.
Step S104, judging whether the sampling voltage is larger than a preset voltage in real time, if not, returning to execute the step S101, and converting the working mode into a standby mode; if yes, the process returns to step S103.
Specifically, after the wireless charging circuit is powered on (i.e., the charging base is powered on), the wireless transmitting circuit 1 is controlled by the switch module to enter the standby module. In the standby mode, the wireless transmission circuit 1 keeps a free oscillation state after oscillation starting for a first time period T1; during the second time period T2, the wireless transmission circuit 1 stops vibrating and does not output. When the wireless toothbrush is inserted into the charging base (which may be inserted into the first time period T1 or the second time period T2), when the wireless transmitting circuit 1 is in the free oscillation state, the current of the whole wireless charging circuit is increased, the sampling voltage is greater than the preset voltage, and the wireless transmitting circuit 1 keeps the free oscillation state after oscillation starts, so that the wireless toothbrush can be continuously charged. And then, whether the wireless toothbrush is still charged is continuously judged according to the size relation between the sampling voltage and the preset voltage, when the wireless toothbrush is separated from the charging base, the sampling voltage is smaller than the preset voltage, and the wireless transmitting circuit 1 is controlled to enter a standby mode again.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (10)
1. A wireless charging circuit with low standby power consumption comprises a wireless transmitting circuit (1), and is characterized in that the wireless transmitting circuit (1) is connected with a circuit (2) to be controlled; the standby control circuit (2) comprises:
the switch module (21) is connected with the wireless transmitting circuit (1) and is used for controlling the operation modes of the wireless transmitting circuit (1), wherein the operation modes comprise a standby mode and a working mode;
the voltage sampling module (22) is used for sampling voltage to obtain sampling voltage;
the comparison module (23) is preset with a preset voltage, compares the sampling voltage with the preset voltage and outputs a comparison signal based on a comparison result; and the number of the first and second groups,
a timing module (24) that sends a timing signal to the switch module (21) based on the comparison signal, the switch module (21) controlling an operation mode of the wireless transmission circuit (1) based on the timing signal;
wherein, when the wireless transmitting circuit (1) is in an operating mode, the wireless transmitting circuit (1) is in a free oscillation state; when the wireless transmitting circuit (1) is in the standby mode, the wireless transmitting circuit (1) is in the free oscillation state in the first time length T1 and in the oscillation stop mode in the second time length T2, and the first time length T1 and the second time length T2 form a cycle period.
2. The wireless charging circuit with low standby power consumption as claimed in claim 1, wherein: the comparison module (23) and the timing module (24) are digital circuit modules, and the comparison module (23) and the timing module (24) are arranged in a controller U1; or,
the comparison module (23) and the timing module (24) are analog circuit modules.
3. The wireless charging circuit with low standby power consumption as claimed in claim 2, wherein: the voltage sampling module (22) comprises a sixth resistor R6, one end of the sixth resistor R6 is connected with the comparison module (23), and the other end is grounded.
4. The wireless charging circuit with low standby power consumption as claimed in claim 2, wherein: the switch module (21) comprises a third triode Q3, the control end of the third triode Q3 is connected with the output end of the timing module (24), and the output end of the third triode Q3 is connected with the wireless transmitting circuit (1); or,
the switch module comprises an NMOS tube, the drain electrode of the NMOS tube is connected with the wireless transmitting circuit (1), and the grid electrode of the NMOS tube is connected with the output end of the timing module (24).
5. The wireless charging circuit with low standby power consumption as claimed in claim 4, wherein: the third triode Q3 is an NPN type triode, the collector of the third triode Q3 is connected with the wireless transmitting circuit (1), and the base is connected with the output end of the timing module (24).
6. The wireless charging circuit with low standby power consumption as claimed in claim 2, wherein: the wireless charging circuit further comprises a second capacitor C2 for filtering an input power supply of the standby control circuit (2).
7. The wireless charging circuit with low standby power consumption as claimed in claim 2, wherein: the wireless charging circuit also includes an isolation resistor R5.
8. The wireless charging circuit with low standby power consumption of claim 1, wherein the ratio of the second time period T2 to the first time period T1 is not less than 4.
9. The wireless charging circuit with low standby power consumption as claimed in claim 1, wherein: an electrolytic capacitor E1 is also arranged between the standby control circuit (2) and the wireless transmitting circuit (1).
10. A wireless charging method with low standby power consumption, wherein the wireless charging circuit according to any one of claims 1-9 comprises:
after the wireless charging circuit is powered on, entering a standby mode; in the standby mode, controlling the wireless transmitting circuit (1) to be in a vibration-off state within a second time length T2; controlling the wireless transmission circuit (1) to be in a free oscillation state for a first time period T1;
judging whether the sampling voltage is greater than the preset voltage or not; if not, continuing to maintain the working mode; if yes, entering a working mode; after entering a working mode, controlling the wireless transmitting circuit (1) to be in a free oscillation state; and the number of the first and second groups,
and judging whether the sampling voltage is greater than the preset voltage in real time, and if not, switching from the working mode to the standby mode.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777801A (en) * | 2009-01-08 | 2010-07-14 | 松下电工株式会社 | Contactless power transmission circuit |
| CN104124769A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Wireless power supply control system and method |
| CN105027387A (en) * | 2013-07-31 | 2015-11-04 | 松下电器产业株式会社 | Wireless electricity transmission device and wireless power transmission system |
| CN106451701A (en) * | 2016-11-03 | 2017-02-22 | 深圳市同洁科技有限公司 | Wireless charging circuit and device |
| CN106471381A (en) * | 2014-03-26 | 2017-03-01 | 罗伯特·博世有限公司 | For carrying out the monitoring device of equipment and the method for inductance energy transmission |
| CN107359681A (en) * | 2017-07-18 | 2017-11-17 | 上海飞科电器股份有限公司 | Wireless charging type electric toothbrush |
| CN107482739A (en) * | 2017-08-07 | 2017-12-15 | 珠海三吉士健康科技有限公司 | A kind of battery induction charging device and its system and control method |
| CN107565705A (en) * | 2016-07-01 | 2018-01-09 | 宁波微鹅电子科技有限公司 | Control method, electric energy transmitting terminal and the non-contact electric energy transmission device of electric energy transmitting terminal |
| CN207939234U (en) * | 2018-03-07 | 2018-10-02 | 深圳市华昌德电子有限公司 | A kind of low-power consumption QI wireless charging circuits |
| EP3386066A1 (en) * | 2015-12-03 | 2018-10-10 | LG Innotek Co., Ltd. | Wireless charging device, wireless power transmission method therefor, and recording medium for same |
| CN110138063A (en) * | 2019-05-24 | 2019-08-16 | 青岛中科瑞信电力技术有限公司 | Match cognization system and method based on middle high-power wireless charging equipment |
-
2022
- 2022-01-04 CN CN202210005004.3A patent/CN114157050A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777801A (en) * | 2009-01-08 | 2010-07-14 | 松下电工株式会社 | Contactless power transmission circuit |
| CN104124769A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Wireless power supply control system and method |
| CN105027387A (en) * | 2013-07-31 | 2015-11-04 | 松下电器产业株式会社 | Wireless electricity transmission device and wireless power transmission system |
| CN106471381A (en) * | 2014-03-26 | 2017-03-01 | 罗伯特·博世有限公司 | For carrying out the monitoring device of equipment and the method for inductance energy transmission |
| EP3386066A1 (en) * | 2015-12-03 | 2018-10-10 | LG Innotek Co., Ltd. | Wireless charging device, wireless power transmission method therefor, and recording medium for same |
| CN107565705A (en) * | 2016-07-01 | 2018-01-09 | 宁波微鹅电子科技有限公司 | Control method, electric energy transmitting terminal and the non-contact electric energy transmission device of electric energy transmitting terminal |
| CN106451701A (en) * | 2016-11-03 | 2017-02-22 | 深圳市同洁科技有限公司 | Wireless charging circuit and device |
| CN107359681A (en) * | 2017-07-18 | 2017-11-17 | 上海飞科电器股份有限公司 | Wireless charging type electric toothbrush |
| CN107482739A (en) * | 2017-08-07 | 2017-12-15 | 珠海三吉士健康科技有限公司 | A kind of battery induction charging device and its system and control method |
| CN207939234U (en) * | 2018-03-07 | 2018-10-02 | 深圳市华昌德电子有限公司 | A kind of low-power consumption QI wireless charging circuits |
| CN110138063A (en) * | 2019-05-24 | 2019-08-16 | 青岛中科瑞信电力技术有限公司 | Match cognization system and method based on middle high-power wireless charging equipment |
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