CN206673710U - A kind of wireless charging emitter - Google Patents
A kind of wireless charging emitter Download PDFInfo
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- CN206673710U CN206673710U CN201720186325.2U CN201720186325U CN206673710U CN 206673710 U CN206673710 U CN 206673710U CN 201720186325 U CN201720186325 U CN 201720186325U CN 206673710 U CN206673710 U CN 206673710U
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Abstract
It the utility model is related to wireless charging field, and in particular to a kind of wireless charging emitter, including control unit, Wireless charging coil, PMU and energy storage units；PMU is used to controlling the direction of transfer of electric energy, the Wireless charging coil by PMU by the power storage of reception into energy storage units, or the PMU is released energy the electric energy in memory cell by Wireless charging coil.The utility model is by designing a kind of wireless charging emitter, on the basis of existing common circuit pattern formula, takes and monitors the mode of the signal on shared wireless charging reception/transmitting coil to switch over；Meanwhile pass through the technique effect of two kinds of Detection Techniques such as " sending detectable signal at random " and " remaining time active sniffing ", in real time discovery the opposing party's wireless charging device.
Description
Technical Field
The utility model relates to a wireless field of charging, concretely relates to wireless emitter that charges.
Background
The wireless charging system comprises a wireless charging transmitter and a wireless charging receiver, and the technology generally adopts direct current to alternating current, so that alternating current drives a transmitting coil to transmit alternating electromagnetic energy to a receiving coil, and then induced alternating current is converted into direct current to supply power to receiving equipment.
In terms of the specific implementation of the wireless charging transmitter product, the wireless charging transmitter product is generally divided into four parts, namely a direct-current power supply module, a direct-current power supply transmission line, a wireless charging transmitting circuit module and a transmitting coil module, wherein the direct-current power supply module is generally an adapter and a large-capacity battery, and the direct-current power supply transmission line is a conventional electric wire, such as a USB wire, which is only suitable for conducting power direct current and low-frequency signal alternating current. The wireless charging transmitting circuit module and the transmitting coil module are generally arranged in the same shell, or are arranged in a group of shells which are divided into two or more parts but are tightly and mechanically connected together in rare cases, so that the wireless charging transmitting circuit module is convenient to produce and install, meets the structural design requirements of the existing wireless charging transmitter, and has practical operability.
The wireless charging receiver product is generally divided into a wireless charging receiving coil module, a wireless charging receiving circuit module, a direct current adjusting circuit module and a load module in the concrete implementation, wherein the load module is generally a secondary battery. The wireless charging receiver is characterized in that the wireless charging receiving circuit module has the capability of transmitting an adjusting signal to the wireless charging transmitter according to the load change of the receiver and the setting of the receiver, and is used for enabling the wireless charging transmitter to actively adjust the output power after receiving the adjusting signal.
There are many wireless charging transmitter products with built-in batteries on the market currently, which are used for temporarily charging wireless charging receiving devices such as mobile phones and cameras during business trips. The wireless charging transmitter product with the built-in battery generally adopts a micro-USB interface as electric energy input, and a special 5V input type voltage regulating circuit is built in the wireless charging transmitter product for charging the battery. Therefore, the wireless charging emitter product with the built-in battery has larger circuit area and higher product cost, and often only can charge a single 3.7V lithium battery, so that a set of 3.7V booster circuit is required to be specially designed to supply energy power for the wireless charging emitter circuit module, thereby greatly reducing the power efficiency, and causing product appearance defect due to the existence of a micro-USB interface, and easily causing short circuit and even overheating explosion of the lithium battery due to ash and water inlet.
Therefore someone utility model discloses a wireless charging transmitter product of built-in battery has wireless receiver function that charges simultaneously, adopts independent circuit or shared circuit to realize wireless receiving function that charges. The independent circuit is completely independent from a wireless charging receiving coil module, a wireless charging receiving circuit module and a direct current adjusting circuit module of a wireless charging receiver, does not share the wireless charging transmitting circuit module and the transmitting coil module of a wireless charging transmitter in the same product, and then switches between a wireless charging transmitting mode and a wireless charging receiving mode in an active switching mode of a user, the method is simple to realize and is usually realized by respectively arranging the wireless charging transmitter and the wireless charging receiver on the front side and the back side of the product, but the method has the defects that the cost is doubled, and the volume and the thickness of the product are also increased; the shared circuit is a wireless charging receiving coil module of a wireless charging receiver, the wireless charging receiving circuit module is shared with a wireless charging transmitting circuit module and a transmitting coil module of a wireless charging transmitter in the same product, namely the wireless charging receiving/transmitting coil module is physically the same, the wireless charging receiving/transmitting circuit module is physically the same, and then one or two of two modes of a user active switch and a gravity switch are adopted to switch functions between the wireless charging transmitter or the wireless charging receiver.
However, in the product with the common circuit mode, due to the fact that the function switching is performed by adopting two modes of the user active switch and the gravity switch, the possibility of failure switching exists, and potential safety hazards can be caused if the user forgets to switch the product actively or the placing direction of the product is opposite to the design direction of the gravity switch. If the other wireless charging device is a wireless charging transmitter and the product in the common circuit mode is also switched to the wireless charging transmitter mode, the other wireless charging device may recharge energy to the product in the common circuit mode, and the recharged energy is directly provided to the battery by the product in the common circuit mode without passing through the dc adjustment circuit module, which may cause damage and even explosion of the battery.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a wireless emitter that charges, realize intelligent switching charge mode.
The utility model provides a technical scheme that its technical problem adopted is: the wireless charging transmitting device comprises a control unit, a wireless charging coil, a power management unit and an energy storage unit, wherein the control unit is respectively connected with the wireless charging coil and the power management unit; wherein,
the wireless charging coil senses external wireless charging output equipment and returns a charging input signal to the control unit, and the control unit controls the wireless charging coil to receive electric energy and store the electric energy into the energy storage unit;
the power supply management unit transmits a detection signal to the outside through the wireless charging coil, returns a charging output signal to the control unit after detecting external wireless charging input equipment, and controls the wireless charging coil to release electric energy in the energy storage unit;
the power management unit is used for controlling the transmission direction of electric energy, and the wireless charging coil stores the received electric energy into the energy storage unit through the power management unit, or the power management unit releases the electric energy in the energy storage unit through the wireless charging coil.
Wherein, the preferred scheme is: the wireless charging transmitting device further comprises an electric energy conversion unit, the electric energy conversion unit is respectively connected with the wireless charging coil and the power management unit, the electric energy conversion unit is used for converting direct current of the energy storage unit into high-frequency alternating current required by wireless transmission, or the electric energy conversion unit is used for converting received high-frequency alternating current into direct current.
Wherein, the preferred scheme is: the electric energy conversion unit is a bridge circuit which comprises four power switches, and the power switches are connected with and controlled by the control unit.
Wherein, the preferred scheme is: the control unit comprises a power adjusting module, the power adjusting module transmits an input power adjusting signal to external wireless charging output equipment through a wireless charging coil, or the power adjusting module receives an output power adjusting signal of the external wireless charging input equipment through the wireless charging coil and controls the electric energy conversion unit to adjust the power of the output high-frequency alternating current.
Wherein, the preferred scheme is: the power supply management unit comprises a current detection circuit, the current detection circuit is respectively connected with the control unit and the wireless charging coil, and the current detection circuit returns a charging output signal to the control unit according to a current value fed back by the wireless charging coil.
Wherein, the preferred scheme is: the wireless charging coil transmits an output power adjusting signal to the power adjusting module through the envelope filter circuit, and transmits a charging input signal to the control unit through the envelope filter circuit, wherein the charging input signal is a voltage peak value of an electric connection point of a magnetic coil of the wireless charging coil and a resonant capacitor.
Wherein, the preferred scheme is: the control unit comprises a logic and driving submodule connected with the bridge circuit, the comparator circuit outputs digital signals generated after comparison of voltages at two ends of the wireless charging coil to the control unit, and the logic and driving submodule controls a power switch of the bridge circuit to be switched on and switched off according to the digital signals to achieve synchronous rectification.
Wherein, the preferred scheme is: and a switch type load circuit is also arranged between the control unit and the wireless charging coil and is used for modulating an input power regulating signal onto the wireless charging coil.
Wherein, the preferred scheme is: the power management unit comprises a monitoring module, the monitoring module feeds back a monitoring signal through a wireless charging coil, and the wireless charging transmitting device enters a wireless electric energy input mode according to the monitoring signal.
Wherein, the preferred scheme is: the power supply management unit comprises a detection module, the wireless charging transmitting device is switched to a transmitting mode at intervals, the detection module transmits a detection signal outwards in the transmitting mode and feeds back a detection feedback signal, and the wireless charging transmitting device is in a large-resistance unidirectional energy transmission mode; the wireless charging transmitting device enters a wireless power output mode according to the detection feedback signal.
The utility model has the advantages that compared with the prior art, the utility model designs a wireless charging transmitter, which is switched by monitoring the signal on the shared wireless charging receiving/transmitting coil on the basis of the existing shared circuit mode, thereby avoiding the danger caused by the simultaneous transmitting state of the other wireless charging device and the current wireless charging transmitter; meanwhile, the technical effect of the other wireless charging equipment is found in real time through two detection technologies, namely 'randomly sending out detection signals' and 'actively monitoring the remaining time', and the other wireless charging equipment automatically enters the corresponding working mode under different detection means, so that the risk problem that the wireless charging equipment of the two wireless charging equipment is dangerous when both the two wireless charging equipment are in the wireless charging emission mode is solved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a circuit block diagram of the wireless charging transmitting device of the present invention;
FIG. 2 is a block diagram of a further expanded circuit of FIG. 1;
fig. 3 is a circuit block diagram of the power conditioning module of the present invention;
fig. 4 is a circuit block diagram of the current detection circuit of the present invention;
FIG. 5 is a schematic diagram of the circuit of FIG. 4;
fig. 6 is a circuit block diagram of the envelope filter circuit of the present invention;
fig. 7 is a circuit block diagram of the comparator circuit and logic and driver sub-module of the present invention;
FIG. 8 is a schematic circuit diagram of the combination of FIGS. 6 and 7;
fig. 9 is a schematic circuit diagram of the logic and driver sub-module of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a preferred embodiment of a wireless charging transmitter.
A wireless charging transmitting device comprises a control unit 20, a wireless charging coil 10, a power management unit 30 and an energy storage unit 40, wherein the control unit 20 is respectively connected with the wireless charging coil 10 and the power management unit 30, and the power management unit 30 is respectively connected with the wireless charging coil 10 and the energy storage unit 40.
Specifically, the wireless charging coil 10 senses an external wireless charging output device and returns a charging input signal to the control unit 20, and the control unit 20 controls the wireless charging coil 10 to receive electric energy and store the electric energy in the energy storage unit 40. At this time, the wireless charging coil 10 processes the receiving mode, and after sensing the external wireless charging output device, the wireless charging transmitting device enters the internal charging mode.
And the power management unit 30 transmits a detection signal to the outside through the wireless charging coil 10, and returns a charging output signal to the control unit 20 after detecting an external wireless charging input device, and the control unit 20 controls the wireless charging coil 10 to release the electric energy in the energy storage unit 40. At this time, the wireless charging coil 10 processes the transmitting mode, and after sensing the external wireless charging input device, the wireless charging transmitting device enters the external charging mode.
Further, the power management unit 30 is used to control the transmission direction of the electric energy, and the wireless charging coil 10 stores the received electric energy into the energy storage unit 40 through the power management unit 30, i.e., an internal charging mode; or the power management unit 30 discharges the electric energy in the energy storage unit 40 through the wireless charging coil 10, i.e., an external charging mode. Wherein the energy storage unit 40 is used for storing electrical energy.
In this embodiment, on the basis of the existing common circuit mode, switching is performed by monitoring a signal on the common wireless charging receiving/transmitting coil, so as to avoid danger caused by the fact that the other wireless charging device and the current wireless charging transmitting device are in a transmitting state at the same time.
Wherein, the external wireless charging output device is a device for emitting electromagnetic waves, and is received by the wireless charging coil 10 and converted into electric energy; the external wireless charging input device is a device that receives electromagnetic waves, and the wireless charging coil 10 emits electromagnetic waves and is received by the external wireless charging input device and converted into electric energy.
As shown in fig. 2, the present invention provides a preferred embodiment of a wireless charging transmitter.
The wireless charging transmitting device further comprises an electric energy conversion unit 50, wherein the electric energy conversion unit 50 is respectively connected with the wireless charging coil 10 and the power management unit 30, the electric energy conversion unit 50 is used for converting the direct current of the energy storage unit 40 into high-frequency alternating current required by wireless transmission, or the electric energy conversion unit 50 is used for converting the received high-frequency alternating current into direct current.
In the internal charging mode, an external wireless charging output device generates an electromagnetic field and is received by the wireless charging coil 10, the wireless charging coil 10 converts the received electromagnetic field into high-frequency alternating current, and the electric energy conversion unit 50 is used for converting the received high-frequency alternating current into direct current and storing the direct current into the energy storage unit 40, that is, the external wireless charging output device charges the wireless charging transmitting device.
In the external charging mode, the electric energy conversion unit 50 is configured to convert the direct current of the energy storage unit 40 into a high-frequency alternating current required for wireless transmission, and the wireless charging coil 10 converts the high-frequency alternating current into an electromagnetic field and transmits the electromagnetic field to the outside, and is received by an external wireless charging input device, that is, the wireless charging transmitting device charges the external wireless charging input device.
Further, the power conversion unit 50 is a bridge circuit including four power switches, and the power switches are connected to and controlled by the control unit 20.
As shown in fig. 3, the present invention provides a preferred embodiment of a power conditioning module.
The control unit 20 includes a power adjusting module 21, where the power adjusting module 21 transmits an input power adjusting signal to an external wireless charging output device through the wireless charging coil 10, or the power adjusting module 21 receives an output power adjusting signal of an external wireless charging input device through the wireless charging coil 10, and controls the electric energy converting unit 50 to adjust the power of the output high-frequency alternating current.
In the internal charging mode, the external wireless charging output device charges to the wireless charging transmitting device, meanwhile, the power adjusting module 21 transmits an input power adjusting signal to the external wireless charging output device through the wireless charging coil 10, and the external wireless charging output device adjusts the power of the high-frequency alternating current received by the wireless charging coil 10 according to the input power adjusting signal.
In the external charging mode, the wireless charging transmitting device charges the external wireless charging input device, meanwhile, the power adjusting module 21 receives an output power adjusting signal of the external wireless charging input device through the wireless charging coil 10, and the power adjusting module 21 controls the electric energy conversion unit 50 to adjust the power of the output high-frequency alternating current according to the output power adjusting signal.
As shown in fig. 4 and 5, the present invention provides a preferred embodiment of a current detection circuit.
The power management unit 30 includes a current detection circuit 31, the current detection circuit 31 is respectively connected to the control unit 20 and the wireless charging coil 10, and the current detection circuit 31 returns a charging output signal to the control unit 20 according to the current value fed back by the wireless charging coil 10.
Specifically, the power management unit 30 transmits a detection signal to the outside through the wireless charging coil 10 and feeds back a corresponding detection feedback signal, the current detection circuit 31 receives the detection feedback signal and returns a charging output signal to the control unit 20 according to a current value of the received detection feedback signal, and the control unit 20 controls the wireless charging coil 10 to release the electric energy in the energy storage unit 40 according to the returned charging output signal.
Referring to fig. 5, the current detection circuit 31 detects current by using a series small resistor 311, and filters and amplifies the detected signal by an amplifier 312, and a reference power supply 313 is added for designing the dc voltage rise in order to realize the detection of bidirectional current. When no current exists, the voltage value of the feedback return charging output signal is a non-zero voltage tV; in the transmitting mode, the voltage value of the returned charging output signal is a voltage value larger than tV; in the receive mode, the voltage value of the return charge output signal is a voltage value less than tV.
Referring to fig. 5, the power management unit 30 further includes a diode 32 and a power switch 33, the power switch 33 is controlled by the control unit 20, and the power switch 33 is generally implemented by using a power pmos fet and is designed as an integral part of the diode 32.
Specifically, when the level input to the power switch 33 by the control unit 20 is a high level, the power switch 33 is turned off, and only the energy of the energy storage unit 40 is allowed to supply a small power to the electric energy conversion unit 50 through the diode 32, and the electric energy conversion unit 50 is a bridge circuit, so that the occurrence of back-flow can be avoided;
when the level input to the power switch 33 by the control unit 20 is a low level, the power switch 33 is turned on, allowing the energy storage unit 40 to supply high power to the bridge circuit through the power switch 33, or the bridge circuit to charge the energy storage unit 40 with high power through the power switch 33.
As shown in fig. 6, 7, 8 and 9, the present invention provides a preferred embodiment of a wireless charging transmitter.
An envelope filter circuit 60 is further included between the control unit 20 and the wireless charging coil 10, the wireless charging coil 10 transmits an output power adjustment signal to the power adjustment module 21 through the envelope filter circuit 60, and the wireless charging coil 10 transmits a charging input signal to the control unit 20 through the envelope filter circuit 60, wherein the charging input signal is a voltage peak value of an electrical connection point of a magnetic coil and a resonant capacitor of the wireless charging coil 10.
The control unit 20 and the wireless charging coil 10 further include a comparator circuit 70, the control unit 20 includes a logic and driving sub-module 22 connected to the bridge circuit, the comparator circuit 70 outputs a digital signal generated by comparing voltages at two ends of the wireless charging coil 10 to the control unit 20, and the logic and driving sub-module 22 controls a power switch of the bridge circuit to be turned on and off according to the digital signal, so as to implement synchronous rectification.
Referring to fig. 8, a bridge circuit implemented by 4 power switches, typically power switch transistors, controlled by a control unit 20 is included, and a wireless charging coil 10 composed of a magnetic coil and a resonant capacitor.
Specifically, a set of envelope filter circuits 60 is further connected to the wireless charging coil 10, the wireless charging coil 10 transmits an output power adjustment signal to the power adjustment module 21 through the envelope filter circuits 60, and the wireless charging coil 10 transmits a charging input signal to the control unit 20 through the envelope filter circuits 60.
And a comparator circuit 70 is also included between the control unit 20 and the wireless charging coil 10, and the comparator circuit 70 outputs a digital signal generated by comparing the voltages at the two ends of the wireless charging coil 10 to the control unit 20.
And a switch type load circuit 80 is further included between the control unit 20 and the wireless charging coil 10, and the switch type load circuit 80 is used for modulating the input power regulating signal onto the wireless charging coil 10.
Referring to fig. 9, the control unit 20 includes a logic and driving sub-module 22 connected to the bridge circuit, and the logic and driving sub-module 22 is a part of the control circuit, and is enabled only in the internal charging mode and disabled in the external charging mode.
When the level of the digital signal changes, the logic and driving submodule 22 will also immediately generate corresponding changes to control the power switch in the bridge circuit to turn on or off, so as to implement synchronous rectification. Wherein, a low level is inputted to the control terminal 81 of the switching type load circuit 80 to turn on the switch, and the input power adjusting signal is modulated to the wireless charging coil 10.
The utility model provides a preferred embodiment of intelligent charging input method.
An intelligent charging input method of a wireless charging transmitting device comprises the following steps:
s11, switching to a receiving mode, entering a monitoring state through the wireless charging coil 10, and feeding back a monitoring signal;
s12, when the voltage value of the monitoring signal is changed and is larger than a first preset voltage value, the wireless charging transmitting device enters a wireless power input mode (namely, an internal charging mode);
and S13, setting a second preset voltage value when the wireless charging transmitting device does not enter the wireless power input mode within the preset time, and when the monitoring signal is smaller than the second preset voltage value, the wireless charging transmitting device enters the monitoring state again.
Specifically, the monitoring signal is a VL signal, and a first preset voltage value aV is set, and if the voltage value of the fed back VL signal is once greater than or equal to the first preset voltage value aV, it indicates that another electromagnetic field emitting device appears in the induction range of the wireless charging coil 10, and may be a wireless charging output device; at this time, the wireless charging transmitting apparatus enters an internal charging mode and attempts to receive wireless power of an external wireless charging output device.
Setting a preset time Q seconds and a second preset voltage value bV, and if the internal charging mode is not entered within the preset time Q seconds, indicating that the electromagnetic field emitting device does not exist in the induction range of the wireless charging coil 10; at this time, the voltage value of the VL signal is set to be greater than or equal to the second preset voltage value bV, until the VL signal is less than the second preset voltage value bV, that is, the non-electromagnetic field emitting device appearing in the induction range of the wireless charging coil 10 leaves the induction range, and the wireless charging emitting device enters the monitoring state again.
If the wireless charging device enters the internal charging mode within the preset time Q seconds, that is, the wireless charging transmitting device can receive the wireless power of the external wireless charging output device, it is indicated that an electromagnetic field transmitting device appears in the induction range of the wireless charging coil 10, and an input power adjusting signal is continuously transmitted to the electromagnetic field transmitting device of the other party; until the other electromagnetic field emitting device is removed from the induction range of the wireless charging coil 10 or the energy storage unit 40 is full of electricity, the wireless charging emitting device enters the monitoring state again.
The utility model provides an intelligent charging output method's preferred embodiment.
The intelligent charging output method of the wireless charging transmitting device comprises the following steps:
s21, in the process of monitoring state, switching to a transmitting mode at intervals, transmitting a detection signal outwards, feeding back a detection feedback signal, and meanwhile, enabling the wireless charging transmitting device to be in a large-resistance unidirectional energy transmission mode;
s22, the current values of the current and the current feedback signals are changed and are larger than a first preset current value or smaller than a second preset current value, and meanwhile, after the emission of the detection signals is stopped, the current value of the detection feedback signals is smaller than a third preset current value;
and S25, the wireless charging transmitting device enters a wireless power output mode (namely an external charging mode).
Specifically, in the process of continuously monitoring the VL signal, setting an interval time t seconds and setting a detection feedback signal as an IL signal; switching to a transmission mode at intervals, wherein the interval time is t seconds, transmitting a detection signal outwards, and feeding back an IL signal; in the transmitting mode, the power management unit 30 is in the high-resistance unidirectional energy transmission mode, and the energy storage unit 40 supplies low power to the bridge circuit to prevent the wireless charging output device of the other party from being present and also to output wireless charging energy or signals, so that the energy storage unit 40 is damaged by electric energy reverse charging.
Setting a first preset current value yA, a second preset current value xA and a third preset current value zA, if the detection signals are sent twice in the front and back, the current values of the IL signal are both greater than the first preset current value yA or less than the second preset current value xA, and the current values of the IL signal after the detection signals are stopped being sent are both less than the third preset current value zA, which indicates that another magnetic conductivity or conductivity device appears in the induction range of the wireless charging coil 10, and the wireless charging input device is possible.
Further, after completing the two detection operations before and after the wireless charging transmitting device enters the wireless power output mode (step S25), the method further includes the steps of:
s23, switching to the emission mode again, and emitting the detection signal outwards, wherein the interval time between the second emission and the third emission is different from the interval time between the first two emission;
s24, when the current value of the detection feedback signal fed back for the third time is changed and is larger than the first preset current value or smaller than the second preset current value, and simultaneously after the emission of the detection signal is stopped, the current value of the detection feedback signal is smaller than the third preset current value;
and S25, the wireless charging transmitting device enters a wireless power output mode.
Specifically, setting an interval time k seconds, in order to ensure that the magnetic conductivity of the other party appears in the induction range of the wireless charging coil 10 or the reliability that the conductive device is the wireless charging input device, the wireless charging transmitting device will switch to the transmitting mode again after the interval time k seconds, and transmit the detection signal outwards;
if the current values of the IL signals of the detection feedback signals fed back for the third time are all greater than the first preset current value yA or less than the second preset current value xA, and the current values of the IL signals after the detection signals are stopped being sent are all less than the third preset current value zA, it is indicated that another magnetic conductivity or conductivity device appears in the induction range of the wireless charging coil 10, and the wireless charging input device is provided.
And the k seconds are not equal to the t seconds and are used for avoiding that the other party is the wireless charging output equipment and sending out the output wireless charging energy or signal at the interval of the t seconds.
Further, the power management unit 30 is set to a low resistance type energy transmission mode, the energy storage unit 40 supplies power to the bridge circuit with high power, and starts to output wireless charging energy to the other wireless charging input device, and controls the bridge circuit to perform power adjustment according to the output power adjustment signal provided by the other wireless charging input device, until the other electromagnetic field emitting device is moved out of the sensing range of the wireless charging coil 10 or the output power adjustment signal is not received, and the wireless charging emitting device enters the monitoring state again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is intended to cover all equivalent changes and modifications made within the scope of the present invention.
Claims (10)
1. A wireless charging and transmitting device is characterized by comprising a control unit, a wireless charging coil, a power management unit and an energy storage unit, wherein the control unit is respectively connected with the wireless charging coil and the power management unit; wherein,
the wireless charging coil senses external wireless charging output equipment and returns a charging input signal to the control unit, and the control unit controls the wireless charging coil to receive electric energy and store the electric energy into the energy storage unit;
the power supply management unit transmits a detection signal to the outside through the wireless charging coil, returns a charging output signal to the control unit after detecting external wireless charging input equipment, and controls the wireless charging coil to release electric energy in the energy storage unit;
the power management unit is used for controlling the transmission direction of electric energy, and the wireless charging coil stores the received electric energy into the energy storage unit through the power management unit, or the power management unit releases the electric energy in the energy storage unit through the wireless charging coil.
2. The wireless charging transmission device of claim 1, wherein: the wireless charging transmitting device further comprises an electric energy conversion unit, the electric energy conversion unit is respectively connected with the wireless charging coil and the power management unit, the electric energy conversion unit is used for converting direct current of the energy storage unit into high-frequency alternating current required by wireless transmission, or the electric energy conversion unit is used for converting received high-frequency alternating current into direct current.
3. The wireless charging transmission device of claim 2, wherein: the electric energy conversion unit is a bridge circuit which comprises four power switches, and the power switches are connected with and controlled by the control unit.
4. The wireless charging transmission device of claim 2, wherein: the control unit comprises a power adjusting module, the power adjusting module transmits an input power adjusting signal to external wireless charging output equipment through a wireless charging coil, or the power adjusting module receives an output power adjusting signal of the external wireless charging input equipment through the wireless charging coil and controls the electric energy conversion unit to adjust the power of the output high-frequency alternating current.
5. The wireless charging transmission device of claim 1, wherein: the power supply management unit comprises a current detection circuit, the current detection circuit is respectively connected with the control unit and the wireless charging coil, and the current detection circuit returns a charging output signal to the control unit according to a current value fed back by the wireless charging coil.
6. The wireless charging transmitter of claim 4, wherein: the wireless charging coil transmits an output power adjusting signal to the power adjusting module through the envelope filter circuit, and transmits a charging input signal to the control unit through the envelope filter circuit, wherein the charging input signal is a voltage peak value of an electric connection point of a magnetic coil of the wireless charging coil and a resonant capacitor.
7. The wireless charging transmission device of claim 1 or 3, wherein: the control unit comprises a logic and driving submodule connected with the bridge circuit, the comparator circuit outputs digital signals generated after comparison of voltages at two ends of the wireless charging coil to the control unit, and the logic and driving submodule controls a power switch of the bridge circuit to be switched on and switched off according to the digital signals to achieve synchronous rectification.
8. The wireless charging transmitter of claim 4, wherein: and a switch type load circuit is also arranged between the control unit and the wireless charging coil and is used for modulating an input power regulating signal onto the wireless charging coil.
9. The wireless charging transmission device of claim 1, wherein: the power management unit comprises a monitoring module, the monitoring module feeds back a monitoring signal through a wireless charging coil, and the wireless charging transmitting device enters a wireless electric energy input mode according to the monitoring signal.
10. The wireless charging transmission device of claim 1, wherein: the power supply management unit comprises a detection module, the wireless charging transmitting device is switched to a transmitting mode at intervals, the detection module transmits a detection signal outwards in the transmitting mode and feeds back a detection feedback signal, and the wireless charging transmitting device is in a large-resistance unidirectional energy transmission mode; the wireless charging transmitting device enters a wireless power output mode according to the detection feedback signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186325.2U CN206673710U (en) | 2017-02-28 | 2017-02-28 | A kind of wireless charging emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186325.2U CN206673710U (en) | 2017-02-28 | 2017-02-28 | A kind of wireless charging emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206673710U true CN206673710U (en) | 2017-11-24 |
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| CN201720186325.2U Expired - Fee Related CN206673710U (en) | 2017-02-28 | 2017-02-28 | A kind of wireless charging emitter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849387A (en) * | 2017-02-28 | 2017-06-13 | 深圳市特斯拉无线设备有限公司 | A kind of wireless charging emitter and its intelligent charge input and output intent |
| WO2020062159A1 (en) * | 2018-09-29 | 2020-04-02 | 华为技术有限公司 | Wireless charging method and electronic device |
| WO2020169034A1 (en) * | 2019-02-18 | 2020-08-27 | 邢益涛 | Wireless charging device with snap ring structure |
| WO2021129128A1 (en) * | 2019-12-26 | 2021-07-01 | 华为技术有限公司 | Wireless charging method for mobile terminal and mobile terminal |
| RU2789308C1 (en) * | 2022-06-30 | 2023-02-01 | Хуавэй Текнолоджиз Ко., Лтд. | Wireless charging and electronic device |
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2017
- 2017-02-28 CN CN201720186325.2U patent/CN206673710U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849387A (en) * | 2017-02-28 | 2017-06-13 | 深圳市特斯拉无线设备有限公司 | A kind of wireless charging emitter and its intelligent charge input and output intent |
| CN106849387B (en) * | 2017-02-28 | 2024-07-19 | 深圳市禾家欢科技有限公司 | Wireless charging transmitting device and intelligent charging input and output method thereof |
| WO2020062159A1 (en) * | 2018-09-29 | 2020-04-02 | 华为技术有限公司 | Wireless charging method and electronic device |
| JP2022501703A (en) * | 2018-09-29 | 2022-01-06 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Wireless charging method and electronic device |
| AU2018443233B2 (en) * | 2018-09-29 | 2022-09-01 | Huawei Technologies Co., Ltd. | Wireless charging method and electronic device |
| JP7280005B2 (en) | 2018-09-29 | 2023-05-23 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Wireless charging method and electronic device |
| US11929626B2 (en) | 2018-09-29 | 2024-03-12 | Huawei Technologies Co., Ltd. | Wireless charging method and electronic device |
| WO2020169034A1 (en) * | 2019-02-18 | 2020-08-27 | 邢益涛 | Wireless charging device with snap ring structure |
| WO2021129128A1 (en) * | 2019-12-26 | 2021-07-01 | 华为技术有限公司 | Wireless charging method for mobile terminal and mobile terminal |
| RU2789308C1 (en) * | 2022-06-30 | 2023-02-01 | Хуавэй Текнолоджиз Ко., Лтд. | Wireless charging and electronic device |
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