CN106998082B - Wireless charging handheld device and control method thereof - Google Patents
Wireless charging handheld device and control method thereof Download PDFInfo
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- CN106998082B CN106998082B CN201610044962.6A CN201610044962A CN106998082B CN 106998082 B CN106998082 B CN 106998082B CN 201610044962 A CN201610044962 A CN 201610044962A CN 106998082 B CN106998082 B CN 106998082B
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Abstract
The invention provides a wireless charging handheld device and a control method thereof. The wireless charging handheld device comprises a wireless receiving circuit, a temperature sensor, an energy storage unit and a microcontroller. The wireless receiving circuit receives an electromagnetic field provided by the wireless power supply device. The temperature sensor detects the temperature inside the wireless charging handheld device to provide temperature information. The energy storage unit selectively supplies electric energy to the wireless receiving circuit. The microcontroller controls the wireless charging handheld device to enter a first heating mode in which the wireless receiving circuit is heated by the electric energy provided by the energy storage unit, a second heating mode in which the wireless receiving circuit is heated by the receiving electromagnetic field or a wireless charging mode according to the temperature information detected by the temperature sensor.
Description
Technical Field
The present invention relates to a wireless charging handheld device and a control method thereof, and more particularly, to a wireless charging handheld device capable of selectively entering a wireless charging mode or a heating mode and a control method thereof.
Background
Unlike conventional electric appliances that are charged by means of a power supply contact, the wireless charging technology is to convert a signal into electric power by magnetic induction or magnetic resonance to charge a battery. Since the wireless charging technology does not require an external hardware line and is safer and more convenient than the conventional charging method, the wireless charging technology is applied to handheld devices, such as consumer electronics, e.g., mobile phones, tablet computers, or various industrial handheld devices.
Generally, the handheld device can adapt to a working environment of about 0-40 ℃. Once the working environment is lower than 0 ℃, the handheld device may have problems such as abnormal battery, unable to start or directly shut down, and the like, which may result in the handheld device being unable to operate normally. Therefore, in order to maintain the normal function of the handheld device in a low temperature environment, in the prior art, a heater, such as a cement resistance heater, a thin film resistance heater, etc., is additionally disposed inside the handheld device to maintain the working temperature of the handheld device in the low temperature environment. However, the handheld device not only needs to have extra volume to accommodate the heater, but also increases the cost of manufacturing the handheld device.
Therefore, it is one of the important issues to be solved by the industry to provide a handheld device capable of having the function of a heater and overcoming the above-mentioned shortcomings.
Disclosure of Invention
In view of the above problems, an embodiment of the present invention provides a wireless charging handheld device, which includes a wireless receiving circuit, a temperature sensor, an energy storage unit, and a microcontroller. The wireless receiving circuit receives an electromagnetic field provided by the wireless power supply device. The energy storage unit is coupled to the wireless receiving circuit. The microcontroller is coupled to the wireless receiving circuit, the temperature sensor and the energy storage unit. The temperature sensor detects the temperature inside the wireless charging handheld device to provide temperature information. The energy storage unit selectively supplies electric energy to the wireless receiving circuit. The microcontroller controls the wireless charging handheld device to enter a first heating mode or a second heating mode or a wireless charging mode, wherein the first heating mode or the second heating mode enables the wireless receiving circuit to generate heat energy through the electromagnetic field, and the first heating mode enables the wireless receiving circuit to generate heat energy through the electric energy provided by the energy storage unit.
Another embodiment of the present invention provides a method for controlling a wireless charging handheld device. The wireless charging handheld device comprises a wireless receiving circuit, a temperature sensor, an energy storage unit and a microcontroller. The control method of the wireless charging handheld device comprises the following steps. Step A: the temperature sensor detects the temperature inside the wireless charging handheld device to provide temperature information. And B: the microcontroller judges whether the temperature is lower than a preset value according to the temperature information detected by the temperature sensor, and controls the wireless charging handheld device to enter a first heating mode or a second heating mode or a wireless charging mode, wherein the first heating mode enables the wireless receiving circuit to generate heat energy through the electric energy provided by the energy storage unit, and the second heating mode or the wireless charging mode enables the wireless receiving circuit to generate heat energy through the receiving electromagnetic field.
The wireless charging handheld device and the control method thereof provided by the embodiment of the invention can provide the heating and wireless charging functions through the at least one wireless receiving circuit and the microcontroller, so that the wireless charging handheld device can be kept in a working temperature range, and the loss rate of internal parts of the wireless charging handheld device is reduced. In addition, the wireless receiving circuit can provide a heating function, and the wireless charging handheld device does not need to be additionally provided with a heater, so that the volume of the wireless charging handheld device is reduced, and the manufacturing cost can be reduced.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic circuit diagram of a wireless receiving circuit generating heat energy through an energy storage unit according to an embodiment of the invention.
Fig. 2 is a flowchart of a control method according to an embodiment of the invention.
Fig. 3 is a schematic circuit diagram of a wireless receiving circuit generating heat energy through a wireless power supply device according to another embodiment of the invention.
Fig. 4 is a flowchart of a control method according to another embodiment of the invention.
Description of reference numerals:
wireless charging handheld device 1
Wireless power supply device 2
Step flows S101 to S104
Step flows S201 to S206
Wireless receiving circuit 11
Detailed Description
The following is a description of embodiments of the wireless charging handheld device and the control method thereof according to the present disclosure by way of specific examples, and other advantages and technical effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure of the present disclosure. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention. The drawings of the present invention are for simplicity and are not drawn to scale, i.e., the actual dimensions of the components are not reflected. The following embodiments are intended to explain the technical contents of the present invention in further detail, but are not intended to limit the technical scope of the present invention.
First, referring to fig. 1, fig. 1 is a schematic circuit diagram illustrating a wireless receiving circuit generating heat energy through an energy storage unit according to an embodiment of the invention. The embodiment of the invention provides a wireless charging handheld device 1, which can receive an electromagnetic field and perform charging, and the wireless charging handheld device 1 can also dynamically generate heat energy according to elements inside the wireless charging handheld device 1. Incidentally, the wireless charging handheld device 1 in the present invention is, for example, a mobile phone, a tablet and other consumer electronics products or an industrial handheld device, and the present invention does not specifically limit the application field of the wireless charging handheld device.
In detail, a wireless receiving circuit 11, a temperature sensor 12, an energy storage unit 13 and a microcontroller 14 are disposed inside the wireless charging handheld device 1, and the microcontroller 14 is coupled to the wireless receiving circuit 11, the temperature sensor 12 and the energy storage unit 13.
The wireless receiving circuit 11 is, for example, a coil or other inductor capable of generating an induced voltage in response to a variable electromagnetic field. The wireless receiving circuit 11 can receive an electromagnetic field and convert the electromagnetic field into electric energy according to an electromagnetic induction technology (electromagnetic induction), which is a principle of wireless charging, and is not described herein in detail for the prior art. The wireless receiving circuit 11 receives an electromagnetic field provided by an external wireless power supply device (not shown in fig. 1), such as a charging pad, in a wireless charging mode, and then converts the electromagnetic field into electric energy. Then, the wireless receiving circuit 11 outputs the electric energy to the energy storage unit 13 through the microcontroller 14, thereby achieving the charging effect.
In addition, the wireless receiving circuit 11 can generate heat energy according to an electric energy provided inside. Specifically, the wireless receiving circuit 11 generates heat energy according to the electric energy provided by the energy storage unit 13 inside the wireless charging handheld device 1 in a first heating mode. Alternatively, the wireless receiving circuit 11 may generate heat energy from an externally provided energy. Specifically, the wireless receiving circuit 11 converts the electromagnetic field provided by the wireless power supply device (e.g., a charging pad) outside the wireless charging handheld device 1 into electric energy in a second heating mode, and the electric energy is changed by the magnetic field to generate heat energy, so as to increase the temperature of the wireless charging handheld device 1.
Incidentally, the wireless receiving circuit 11 may be disposed on a circuit board inside the wireless charging handheld device 1 or on a housing of the wireless charging handheld device 1 (for example, disposed on a back panel of a mobile phone), and the wireless receiving circuit 11 may be designed as one or more coils. Those skilled in the art should be able to arrange the wireless receiving circuits 11 at different positions and design different numbers according to actual situations and requirements to complete the present invention.
The temperature sensor 12, such as a Thermal Diode (Thermal Diode), a thermopile (thermo-electric) sensor, or a Thermistor (Thermistor), is disposed on the circuit board of the wireless charging handheld device 1, and detects the temperature inside the wireless charging handheld device 1 to provide a temperature information to the microcontroller 14.
The energy storage unit 13 is, for example, a battery, and is disposed inside the wireless charging handheld device 1. The power storage unit 13 selectively supplies power to the wireless receiving circuit 11. In detail, the energy storage unit 13 provides power to various components inside the wireless charging handheld device 1 in the normal operation mode to provide the required operating voltages for the components. It should be noted that the energy storage unit 13 does not provide power to the wireless receiving circuit 11 in the normal operation mode, and the energy storage unit 13 only provides power to the wireless receiving circuit 11 in the first heating mode.
The microcontroller 14 is disposed on the circuit board of the wireless charging handheld device 1. The microcontroller 14 controls the wireless charging handheld device 1 to enter the first heating mode, the second heating mode or the wireless charging mode according to the temperature information detected by the temperature sensor 12. Specifically, the microcontroller 14 can control a power supply condition of the energy storage unit 13 according to the temperature information detected by the temperature sensor 12 in the wireless charging handheld device 1, that is, the wireless receiving circuit 11 generates heat energy by supplying the electric energy provided by the energy storage unit 13 to the wireless receiving circuit 11 in the first heating mode. And the electromagnetic field provided by the external wireless power supply device for reception by the wireless receiving circuit 11 in the second heating mode causes the wireless receiving circuit 11 to generate heat energy.
It should be noted that the microcontroller 14 adjusts the connection or disconnection of the line between the wireless receiving circuit 11 and the energy storage unit 13, which can be realized by controlling the on (Turn on) or off (Turn off) of a switch inside the microcontroller 14. For example, the microcontroller 14 controls the switch to be turned on, so that the energy storage unit 13 provides power to the wireless receiving circuit 11. Alternatively, the microcontroller 14 controls the switch to be turned off, so as to convert the electromagnetic field received by the wireless receiving circuit 11 into electric energy and output the electric energy to the energy storage unit 13. The manner in which the microcontroller 14 controls the adjustment is not limited to the above.
Referring to fig. 1 again, the wireless charging handheld device 1 of the present embodiment is far away from the wireless power supply device (e.g., a charging pad) and is in a use state. When the temperature sensor 12 detects that the temperature information inside the wireless charging handheld device 1 is lower than a preset value, the wireless charging handheld device 1 enters the first heating mode. At this time, the microcontroller 14 controls the energy storage unit 13 to provide electric energy to the wireless receiving circuit 11, so that the wireless receiving circuit 11 generates heat energy according to the received electric energy. In other words, when the wireless charging handheld device 1 is far away from the wireless power supply device and the temperature sensor 12 detects that the temperature inside the wireless charging handheld device 1 is lower than the working range temperature (e.g. 0 ℃), the microcontroller 14 starts the first heating mode. At this time, the energy storage unit 13 not only provides electric energy to the circuit devices such as the microcontroller 14 and the temperature sensor 12, but also provides electric energy to the wireless receiving circuit 11 under the control of the microcontroller 14, and then the wireless receiving circuit 11 converts the electric energy to generate heat energy, so that the temperature inside the wireless charging handheld device 1 is maintained within a stable working range. Incidentally, the preset values and the working range temperatures provided in the embodiment are only for illustration and are not used to limit the invention. The skilled person can design the preset temperature according to the actual situation and requirement.
The flow of the control method of the wireless charging handheld device 1 will be further described below. Referring to fig. 2 in conjunction with fig. 1, fig. 2 is a flowchart of a control method according to an embodiment of the invention. In this embodiment, the wireless charging handheld device 1 is far away from the wireless power supply device and is in a use state. In step S101, the temperature sensor 12 detects the temperature inside the wireless charging handheld device 1 to provide a temperature information to the microcontroller 14.
In step S102, the microcontroller 14 determines whether the current temperature is lower than a predetermined value according to the temperature information detected by the temperature sensor 12. If the current temperature is higher than the preset value, the process proceeds to step S103. On the contrary, if the current temperature is lower than the preset value, the process proceeds to step S104, and the microcontroller 14 controls the wireless charging handheld device 1 to enter the first heating mode according to the determination result, that is, the wireless receiving circuit 11 generates heat energy through the electric energy provided by the energy storage unit 13. In detail, the microcontroller 14 controls the power supply condition of the energy storage unit 13 according to the temperature information detected by the temperature sensor 12, so that the energy storage unit 13 selectively supplies power to the wireless receiving circuit 11.
In step S103, when the temperature detected by the temperature sensor 12 is not lower than the predetermined value, the microcontroller 14 controls the energy storage unit 13 to stop supplying power to the wireless receiving circuit 11, and then returns to step S101.
In step S104, when the temperature information detected by the temperature sensor 12 is lower than the predetermined value, the wireless charging handheld device 1 enters the first heating mode. In the first heating mode, the energy storage unit 13 not only provides electric energy to the circuit devices such as the microcontroller 14 and the temperature sensor 12, but also the microcontroller 14 controls the energy storage unit 13 to provide electric energy to the wireless receiving circuit 11, so that the wireless receiving circuit 11 generates heat energy. Accordingly, when the temperature of the wireless charging handheld device 1 is lower than the operating range temperature, the heat energy provided by the wireless receiving circuit 11 can keep the temperature of the wireless charging handheld device 1 within the operating range. Then, the process returns to step S101.
In this embodiment, the wireless charging handheld device 1 has an automatic constant temperature function, i.e. the steps S101 to S104 are executed without providing an additional instruction. When the wireless charging handheld device 1 is powered on, the microcontroller 14 automatically starts to execute the control method. However, in other embodiments, the user may also force the wireless charging handheld device 1 to perform the above-mentioned control method by manually performing the heating mode of the wireless charging handheld device 1 and giving a heating instruction to the wireless charging handheld device 1.
It should be noted that in other embodiments, even if the wireless charging handheld device 1 is in the CPU off state, many MCUs or power management ICs still work, so the energy storage unit 13 still continues to supply the minimum electric energy to the temperature sensor 12 and the microcontroller 14, and the above steps S101 to S104 are continuously performed to avoid the damage of the components of the wireless charging handheld device 1 due to the low temperature.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of a wireless receiving circuit generating heat energy through a wireless power supply device according to another embodiment of the invention. The structure of the wireless charging handheld device 1 described in this embodiment is similar to the wireless charging handheld device 1 of fig. 1, and only different points are described below. The wireless charging handheld device 1 of the present embodiment is configured with a wireless power supply device 2, and is different from the aforementioned wireless charging handheld device 1 in implementation mode that is far away from the wireless power supply device 2.
Specifically, when the wireless charging handheld device 1 approaches or contacts the wireless power supply device 2, the wireless power supply device 2 provides an electromagnetic field to the wireless receiving circuit 11. After receiving the electromagnetic field, the wireless receiving circuit 11 converts the electromagnetic field into electric energy, and performs subsequent operations based on the converted electric energy. The microcontroller 14 controls the wireless charging handheld device 1 to enter the second heating mode or the wireless charging mode according to the temperature information inside the wireless charging handheld device 1 measured by the temperature sensor 12.
Referring to fig. 4 in conjunction with fig. 3, fig. 4 is a flowchart of a control method according to another embodiment of the invention. The flow chart of the control method provided in fig. 4 is applicable to the wireless charging handheld device 1 in fig. 3. The wireless charging handheld device 1 described in this embodiment is used in combination with the wireless power supply device 2. In step S201, the wireless receiving circuit 11 receives the electromagnetic field provided by the wireless power device 2.
In step S202, the temperature sensor 12 detects the temperature inside the wireless charging handheld device 1 to provide temperature information to the microcontroller 14.
In step S203, the microcontroller 14 determines whether the current temperature is lower than a predetermined value according to the temperature information detected by the temperature sensor 12. If the current temperature is higher than the preset value, the wireless charging mode of step S205 is entered. On the contrary, if the current temperature is lower than the preset value, the process proceeds to step S204, and the microcontroller 14 controls the wireless charging handheld device 1 to enter the second heating mode according to the determination result, that is, the wireless receiving circuit 11 generates heat energy by changing the magnetic field through the receiving electromagnetic field. In detail, the microcontroller 14 controls the wireless receiving circuit 11 to selectively output the converted electric energy to the energy storage unit 13 according to the temperature information detected by the temperature sensor 12. Incidentally, the preset temperature can be set to 0 ℃ as in the previous embodiment, and the preset temperature is only for illustration and is not meant to limit the invention. The skilled person can design the preset temperature according to the actual situation and requirement.
In step S204, the wireless charging handheld device 1 enters the second heating mode, and the microcontroller 14 controls the line between the wireless receiving circuit 11 and the energy storage unit 13 to be disconnected, so that the power of the energy storage unit 13 cannot be supplied to the wireless receiving circuit 11. Similarly, the electric energy converted by the wireless receiving circuit 11 receiving the electromagnetic field cannot be output to the energy storage unit 13. Next, the process proceeds to step S206. In step S206, the wireless receiving circuit 11 generates heat energy according to the electromagnetic field to achieve the heating function and maintain the temperature of the wireless charging handheld device 1 within the working range. Then, the process returns to step S201 to continue the control method.
When the temperature information detected by the temperature sensor 12 is higher than the preset value, the process proceeds to step S205. In step S205, the wireless charging handheld device 1 enters a wireless charging mode, the microcontroller 14 controls the connection between the wireless receiving circuit 11 and the energy storage unit 13, and the wireless receiving circuit 11 converts the electromagnetic field into electric energy and outputs the electric energy to the energy storage unit 13, so as to achieve the function of wireless charging. Then, the process returns to step S201 to continue the control method.
The present embodiment is the same as the previous embodiment, and the control method can be performed by automatically detecting whether the temperature is too low or manually performing forced heating, which is not limited by the present invention. Incidentally, in other embodiments, even if the wireless charging handheld device 1 is in the CPU off state, many MCUs or power management ICs still work, so the energy storage unit 13 still continues to supply the minimum electric energy to the temperature sensor 12 and the microcontroller 14, and the above steps S201 to S206 are continuously performed to avoid the damage of the components caused by the over-low temperature of the wireless charging handheld device 1.
On the other hand, when the wireless charging handheld device 1 is used with the wireless power supply device 2 and the wireless charging handheld device 1 needs to be charged and heated at the same time, the microcontroller 14 may also switch the wireless charging handheld device 1 between the wireless charging mode and the second heating mode alternately by switching the timing sequence. The microcontroller 14 controls the wireless charging handheld device 1 to operate in the wireless charging mode for a fixed time, and operate in the second heating mode for another fixed time. For example, the microcontroller 14 controls the wireless charging handheld device 1 to operate in the wireless charging mode for a time interval of 30 seconds. The wireless receiving circuit 11 receives the electromagnetic field and converts the electric energy to the energy storage unit 13 to charge the energy storage unit 13. Then, the microcontroller 14 controls the wireless charging handheld device 1 to operate in the second heating mode for a time interval of 20 seconds. The microcontroller 14 controls the wireless receiving circuit 11 to receive the electromagnetic field and generate heat energy. The wireless charging handheld device 1 can alternately perform charging and heating, thereby achieving the heating and charging effects.
[ practical technical effects of the embodiment ]
In summary, the wireless charging handheld device and the control method thereof provided by the embodiments of the present invention can provide heating and wireless charging functions through at least one wireless receiving circuit and the microcontroller, so that the wireless charging handheld device can be kept in a working temperature range, and the loss rate of internal components of the wireless charging handheld device is reduced. In addition, the wireless receiving circuit can provide a heating function, and the wireless charging handheld device does not need to be additionally provided with a heater, so that the volume of the wireless charging handheld device is reduced, and the manufacturing cost can be reduced.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, so that equivalent technical changes made by using the contents of the present specification and the drawings are included in the scope of the present invention.
Claims (9)
1. A wireless charging handset, comprising:
a wireless receiving circuit for receiving an electromagnetic field;
the temperature sensor is used for detecting the temperature inside the wireless charging handheld device so as to provide temperature information;
an energy storage unit for selectively supplying electric energy to the wireless receiving circuit; and
a microcontroller coupled to the wireless receiving circuit, the temperature sensor and the energy storage unit;
the microcontroller controls the wireless charging handheld device to enter a first heating mode for enabling the wireless receiving circuit to generate heat energy through the electric energy provided by the energy storage unit, a second heating mode for enabling the wireless receiving circuit to generate heat energy through receiving the electromagnetic field, or a wireless charging mode according to the temperature information detected by the temperature sensor;
when the temperature information detected by the temperature sensor is lower than a first preset value, the wireless charging handheld device enters the first heating mode, and in the first heating mode, the microcontroller controls the energy storage unit to provide the electric energy to the wireless receiving circuit, so that the wireless receiving circuit generates heat energy according to the electric energy.
2. The wireless charging handheld device of claim 1, wherein when the electromagnetic field is provided by a wireless power supply and transmitted to the wireless receiving circuit, the microcontroller selectively converts the electromagnetic field received by the wireless receiving circuit into the thermal energy or converts the electromagnetic field into the electrical energy to charge the energy storage unit according to the temperature information detected by the temperature sensor.
3. The wireless charging handheld device of claim 2, wherein when the temperature information detected by the temperature sensor is lower than a second predetermined value, the wireless charging handheld device enters the second heating mode, and in the second heating mode, the microcontroller controls the wireless receiving circuit to be disconnected from the energy storage unit, and the wireless receiving circuit generates heat energy according to the electromagnetic field.
4. The wireless charging handheld device of claim 2, wherein when the temperature information detected by the temperature sensor is higher than a third predetermined value, the wireless charging handheld device enters the wireless charging mode, in the wireless charging mode, the wireless receiving circuit converts the received electromagnetic field into the electric energy, and the microcontroller transmits the electric energy to the energy storage unit.
5. The wireless charging handheld device of claim 1, wherein the wireless receiving circuit is a coil.
6. A control method of a wireless charging handheld device comprises a wireless receiving circuit, a temperature sensor, an energy storage unit and a microcontroller, and is characterized in that the control method of the wireless charging handheld device comprises the following steps:
step A: the temperature sensor detects the temperature inside the wireless charging handheld device to provide temperature information; and step B: the microcontroller judges whether the temperature information is lower than a preset value or not according to the temperature information and controls the wireless charging handheld device to enter a first heating mode for enabling the wireless receiving circuit to generate heat energy through electric energy provided by the energy storage unit, a second heating mode for enabling the wireless receiving circuit to generate heat energy through receiving an electromagnetic field or a wireless charging mode;
when the temperature information detected by the temperature sensor is lower than a first preset value, the wireless charging handheld device enters the first heating mode, and in the first heating mode, the microcontroller controls the energy storage unit to provide the electric energy to the wireless receiving circuit, so that the wireless receiving circuit generates heat energy according to the electric energy.
7. The method of controlling a wireless charging handset of claim 6, wherein the method of controlling further comprises:
and C: when the wireless receiving circuit receives the electromagnetic field from a wireless power supply device, the microcontroller selectively converts the electromagnetic field received by the wireless receiving circuit into the heat energy or converts the electromagnetic field into the electric energy to charge the energy storage unit according to the temperature information detected by the temperature sensor.
8. The method for controlling a wireless charging handset according to claim 7, wherein step C further comprises:
when the temperature information detected by the temperature sensor is lower than a second preset value, the wireless charging handheld device enters the second heating mode, and in the second heating mode, the microcontroller controls the disconnection between the wireless receiving circuit and the energy storage unit, and the wireless receiving circuit generates heat energy according to the electromagnetic field.
9. The method for controlling a wireless charging handset according to claim 7, wherein step C further comprises:
when the temperature information detected by the temperature sensor is higher than a third preset value, the wireless charging handheld device enters the wireless charging mode, the wireless receiving circuit converts the received electromagnetic field into the electric energy in the wireless charging mode, and the microcontroller transmits the electric energy to the energy storage unit.
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| CN201610044962.6A CN106998082B (en) | 2016-01-22 | 2016-01-22 | Wireless charging handheld device and control method thereof |
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| CN101971453A (en) * | 2007-05-08 | 2011-02-09 | 莫琼移动股份有限公司 | System and method for inductive charging of portable devices |
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