CN111130222B - Wireless charging power supply circuit and method and electronic equipment - Google Patents
Wireless charging power supply circuit and method and electronic equipment Download PDFInfo
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- CN111130222B CN111130222B CN201811280591.7A CN201811280591A CN111130222B CN 111130222 B CN111130222 B CN 111130222B CN 201811280591 A CN201811280591 A CN 201811280591A CN 111130222 B CN111130222 B CN 111130222B
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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
Abstract
The disclosure relates to a wireless charging power supply circuit, a wireless charging power supply method and electronic equipment. The circuit comprises a wireless charging module, a power management module and a boosting module, wherein the output end of the wireless charging module is connected with the input end of the power management module, the output end of the power management module is connected with the input end of the boosting module, and the output end of the boosting module is connected with a data transmission interface; the power supply management module receives a current signal output by the wireless charging module and sends a voltage signal corresponding to the current signal to the boosting module; the voltage boosting module boosts a voltage signal corresponding to the current signal to a first preset voltage value, and inputs the boosted current signal to the data transmission interface. When the current signal that this technical scheme was exported when the wireless module that charges reduces, the accessible module that steps up increases current signal, satisfies the electric current of connecting the external equipment at the data transmission interface, guarantees when wireless charging, and the external equipment of connecting at the data transmission interface can normally work.
Description
Technical Field
The disclosure relates to the technical field of terminals, and in particular to a wireless charging power supply circuit, a wireless charging power supply method and electronic equipment.
Background
With the widespread use of electronic devices, wireless charging technology becomes an important way for charging electronic devices. The wireless charging technology is derived from a wireless power transmission technology, and refers to a technology for charging by using electromagnetic waves without using a traditional charging power line.
In the related art, in the process of wirelessly charging the electronic device, a user generally uses a wirelessly charged current to supply power to an external device, for example, to charge the external device, or connect a digital headset to listen to music, or connect an external storage device to watch videos.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a wireless charging power supply circuit, a method and an electronic device. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a wireless charging power supply circuit, including:
the output end of the wireless charging module is connected with the input end of the power management module, the output end of the power management module is connected with the input end of the boosting module, and the output end of the boosting module is connected with a data transmission interface of the electronic equipment;
the power supply management module is used for receiving the current signal output by the wireless charging module and sending a voltage signal corresponding to the current signal to the boosting module when the boosting module is in a starting state;
the boosting module is used for boosting a voltage signal corresponding to the current signal to a first preset voltage value and inputting the boosted current signal to the data transmission interface.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the power management module sends a voltage signal corresponding to the current signal received by the wireless charging module to the boosting module, and the boosting module boosts the voltage signal corresponding to the current signal to a first preset voltage value, so that the boosted current signal is increased, and the increased current signal is sent to the data transmission interface. Like this, when the current signal of wireless module output that charges reduces, can step up the voltage signal that current signal corresponds to first preset voltage value through the module that steps up, and then can satisfy the required electric current of the external equipment of connection at the data transmission interface, guarantee when wireless charging, the external equipment of connection at the data transmission interface can normally work.
In one embodiment, the device further comprises a detection module, an input end of the detection module is connected with the data transmission interface, and an output end of the detection module is connected with the boosting module;
the detection module is used for controlling the boosting module to be in a starting state when the data transmission interface is detected to have an electric signal.
In one embodiment, the electronic device further comprises a protection module, an input end of the protection module is connected with an output end of the boosting module, and an output end of the protection module is connected with a data transmission interface of the electronic device; the protection module is used for reducing the voltage signal of the data transmission interface to a third preset voltage value when the voltage signal of the data transmission interface is determined to be larger than or equal to the second preset voltage value.
In one embodiment, the wireless charging module comprises a wireless charging receiving coil, a wireless charging chip and a first filter circuit, wherein an input end of the wireless charging chip is connected with the wireless charging receiving coil, an output end of the wireless charging chip is connected with an input end of the first filter circuit, and an output end of the first filter circuit is connected with the power management module.
In one embodiment, the power management module includes a power management chip, a voltage regulation circuit, a second filter circuit, a third filter circuit, and a voltage regulator circuit, an input terminal of the second filter circuit is connected to an output terminal of the first filter circuit, an output terminal of the second filter circuit is connected to an input terminal of the voltage regulator circuit after passing through the power management chip, the voltage regulation circuit, and the third filter circuit in sequence, and an output terminal of the voltage regulator circuit is connected to the boost module.
In one embodiment, the boost module comprises a boost chip, a boost filter circuit and a fourth filter circuit, wherein the input end of the boost filter circuit is connected with the output end of the voltage stabilizing circuit, the output end of the boost filter circuit is connected with the input end of the boost chip, the output end of the boost chip is connected with the input end of the fourth filter circuit, and the output end of the fourth filter circuit is connected with the protection module;
the boost filter circuit is used for boosting the voltage signal stabilized by the voltage stabilizing circuit to a fourth preset voltage value, filtering the boosted voltage signal and sending the filtered boosted voltage signal to the boost chip;
the boosting chip is used for boosting the voltage signal filtered by the boosting filter circuit to a first preset voltage value and then sending the voltage signal to a fourth filter circuit;
and the fourth filter circuit is used for filtering the voltage signal boosted by the boosting chip and then sending the voltage signal to the protection module.
In one embodiment, the protection module includes an overcurrent and overvoltage protection chip, an input end of the overcurrent and overvoltage protection chip is connected with an output end of the fourth filter circuit, and an output end of the overcurrent and overvoltage protection chip is connected with an input end of the data transmission interface.
In one embodiment, the wireless charging module further includes a fifth filter circuit, and the wireless charging receiving coil is connected to the input end of the wireless charging chip through the fifth filter circuit.
According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, which includes the wireless charging power supply circuit described in any one of the embodiments of the first aspect.
According to a third aspect of the embodiments of the present disclosure, there is provided a wireless charging and power supplying method, including:
acquiring a current signal for wirelessly charging a battery;
boosting a voltage signal corresponding to the current signal to a first preset voltage value;
and sending a current signal corresponding to the voltage signal boosted to the first preset voltage value to a data transmission interface.
In one embodiment, the boosting the voltage signal corresponding to the current signal to a first preset voltage value includes:
and when the data transmission interface is detected to have an electric signal, boosting a voltage signal corresponding to the current signal to a first preset voltage value.
In one embodiment, further comprising:
detecting a voltage signal of the data transmission interface;
and when the voltage signal of the data transmission interface is determined to be greater than or equal to a second preset voltage value, the voltage signal of the data transmission interface is reduced to a third preset voltage value.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
Fig. 2 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
Fig. 3 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
Fig. 4 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
Fig. 5 is a circuit diagram illustrating a wireless charging module according to an example embodiment.
Fig. 6 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
FIG. 7 is a circuit diagram illustrating a power management module according to an example embodiment.
Fig. 8 is a block diagram illustrating a wireless charging power supply circuit according to an example embodiment.
FIG. 9 is a circuit diagram illustrating a boost module according to an exemplary embodiment.
Fig. 10 is a circuit diagram illustrating a protection module according to an example embodiment.
Fig. 11 is a block diagram illustrating an electronic device including a wireless charging power supply circuit, according to an example embodiment.
Fig. 12 is a flowchart illustrating a wireless charging and power supplying method according to an exemplary embodiment.
Fig. 13 is a flowchart illustrating a wireless charging and power supplying method according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The technical scheme provided by the embodiment of the disclosure relates to an electronic device, which may be a mobile phone, a tablet computer, a notebook computer, or other devices provided with a data transmission interface, and the embodiment of the disclosure does not limit this. In the related art, when wirelessly charging, a user usually charges an external device with wirelessly charged current, or connects a digital headset to listen to music, or connects an external storage device to watch videos, etc. However, when the battery of the electronic device is fully charged, the current required by the battery of the electronic device is reduced, and the current provided by the wireless charging is also reduced, so that if the current adopting the wireless charging is used for supplying power to the outside, the external device cannot normally operate due to insufficient current, and the user experience is reduced. In the technical scheme provided by the embodiment of the disclosure, when the current signal output by the wireless charging module is reduced, the voltage signal corresponding to the current signal can be boosted to the first preset voltage value through the boosting module, so that the current required by the external equipment connected to the data transmission interface can be met, the external equipment connected to the data transmission interface can normally work while wireless charging is ensured, and the user experience is improved.
Fig. 1 is a block diagram of a wireless charging and power supplying circuit according to an exemplary embodiment, as shown in fig. 1, the wireless charging and power supplying circuit includes a wireless charging module 11, a power management module 12, and a voltage boosting module 13, an output terminal of the wireless charging module 11 is connected to an input terminal of the power management module 12, an output terminal of the power management module 12 is connected to an input terminal of the voltage boosting module 13, and an output terminal of the voltage boosting module 13 is connected to a data transmission interface 14 of an electronic device; the power management module 12 is configured to receive a current signal output by the wireless charging module 11, and send a voltage signal corresponding to the current signal to the boosting module 13 when the boosting module 13 is in a starting state; the voltage boosting module 13 is configured to boost a voltage signal corresponding to the current signal to a first preset voltage value, and input the boosted current signal to the data transmission interface 14.
For example, when the electronic device is powered on, the wireless charging module 11, the power management module 12 and the voltage boosting module 13 are all in a starting state, when the external wireless charging transmission module transmits an electromagnetic signal, the wireless charging module 11 receives the electromagnetic signal transmitted by the external wireless charging transmission module in real time, converts the received electromagnetic signal into a current signal and transmits the current signal to the power management module 12, the power management module 12 charges a battery of the electronic device through the received current signal, meanwhile, the power management module 12 transmits a voltage signal corresponding to the received current signal to the voltage boosting module 13, the voltage boosting module 13 boosts the voltage signal corresponding to the current signal to a first preset voltage value, and then transmits the current signal corresponding to the voltage signal boosted to the first preset voltage value to the data transmission interface 14 of the electronic device, where the data transmission interface 14 may be a USB interface or an earphone interface, when the data transmission interface 14 is an earphone interface, the external device connected to the data transmission interface 14 is an earphone; when the data transmission interface 14 is a USB interface, the external device connected to the data transmission interface 14 may be a digital earphone, a keyboard, a mouse, a USB disk, a hard disk, a mobile phone, a digital camera, etc. connected through an OTG data line, a user may listen to music through the digital earphone, operate the electronic device through the keyboard and the mouse, the electronic device may read and write contents in the USB disk, the hard disk, and the digital camera, and the electronic device may also charge the mobile phone through the OTG data line, etc.
It should be noted that, in this embodiment, the first preset voltage value after the voltage boosting module 13 boosts is not limited, and may be specifically determined according to a current required by an external device connected to the data transmission interface 14, that is, the current corresponding to the first preset voltage value after the voltage boosting module 13 boosts needs to be matched with the current required by the external device, and when the current required by the external device changes after the external device is replaced, the voltage boosting module 13 matched with the external device needs to be replaced correspondingly, which is not limited in this embodiment.
It should be noted that, when the current signal output by the wireless charging module 11 is not changed, that is, the current required by the battery is a constant current value, if the current signal output by the wireless charging module 11 is matched with the current required by the external device, the voltage boosting module 13 does not perform voltage boosting processing on the voltage signal corresponding to the current signal output by the wireless charging module 11, in short, the voltage value finally output by the voltage boosting module 13 is a first preset voltage value, and the current corresponding to the first preset voltage value is matched with the current required by the external device.
In the technical scheme provided by the embodiment of the present disclosure, the power management module 12 sends the voltage signal corresponding to the current signal received by the wireless charging module 11 to the voltage boosting module 13, and the voltage boosting module 13 boosts the voltage signal corresponding to the current signal to a first preset voltage value, so that the boosted current signal is increased, and the increased current signal is sent to the data transmission interface. Like this, when the current signal that wireless charging module 11 exported reduces, can step up the voltage signal that current signal corresponds to first preset voltage value through step up module 13, and then can satisfy the required electric current of the external equipment of connection at data transmission interface 14, guarantee when wireless charging, the external equipment of connection at data transmission interface 14 can normally work.
In one embodiment, fig. 2 is a block diagram of a wireless charging power supply circuit according to an exemplary embodiment, and as shown in fig. 2, the circuit further includes a protection module 15, an input end of the protection module 15 is connected to an output end of the voltage boosting module 13, and an output end of the protection module 15 is connected to the data transmission interface 14 of the electronic device.
Here, in order to prevent the boost module 13 from being damaged due to overvoltage, the present embodiment provides the protection module 15, the protection module 15 is connected between the boost module 13 and the data transmission interface 14, and the protection module 15 sends a current signal corresponding to a voltage signal boosted by the boost module 13 to the data transmission interface 14, so that a current at the data transmission interface 14 is increased to meet a current required by an external device connected at the data transmission interface 14; when the data transmission interface 14 is connected to one end of the charging line, the other end of the charging line is connected to the adapter, and the battery of the electronic device is charged in a wired manner, the voltage signal applied to the data transmission interface 14 is increased, the protection module 15 is configured to collect the voltage signal at the data transmission interface 14 in real time, compare the collected voltage signal with a second preset voltage value, and when it is determined that the collected voltage signal is greater than or equal to the second preset voltage value, step down the voltage signal at the data transmission interface 14 to a third preset voltage value, so that the voltage signal at the data transmission interface 14 is not directly applied to the voltage boosting module 13, but the voltage signal with the third preset voltage value is applied to the voltage boosting module 13, where when the third preset voltage value is selected, the voltage signal is selected according to parameters such as the rated voltage of the voltage boosting module 13, the voltage signal applied to the boosting module 13 is ensured to enable the boosting module 13 to work normally.
It should be noted that the second preset voltage value needs to be selected according to the rated voltage value of the external adapter, the rated voltage value of the boost module 13, the characteristic parameters of the protection module 15, and the like, which is not limited in this embodiment.
As shown in fig. 2, the circuit further includes a detection module 16, an input end of the detection module 16 is connected to the data transmission interface 14, and an output end of the detection module 16 is connected to the voltage boosting module 13.
The detecting module 16 is configured to control the boosting module 13 to be in a starting state when detecting that the data transmission interface 14 has an electric signal.
For example, in practical application, the action of the detection module 16 is executed by a processor of the electronic device, the processor controls enabling and disconnecting of the power management module 12 and the wireless charging module 11 according to a preset time sequence, detects whether the data transmission interface 14 has an electric signal, determines that the data transmission interface 14 is connected with an external device when the data transmission interface 14 has the electric signal, and controls the voltage boosting module 13 to be in a starting state at this time, so that the voltage boosting module 13 boosts a voltage signal corresponding to the current signal to a first preset voltage value, and inputs the boosted current signal to the data transmission interface 14.
When the processor detects that the data transmission interface 14 has no electrical signal, the processor determines that the data transmission interface 14 is not connected with an external device, and controls the boost module 13 to be disconnected, so that the current signal received by the power management module 12 cannot be transmitted to the boost module 13, and when the data transmission interface 14 is connected with no external device, no current signal is output, so that the electric energy is saved.
In addition, the output end of the detection module 16 is further connected to the protection module 15, and is configured to control the protection module 15 to be in a start state when detecting that the data transmission interface 14 has an electrical signal.
For example, when the processor detects that the data transmission interface 14 has an electrical signal, the processor controls the protection module 15 to be in a start state, so that the protection module 15 sends the current signal output by the voltage boosting module 13 to the data transmission interface 14; when the processor detects that the data transmission interface 14 has no electric signal, the protection module 15 is controlled to be disconnected, so that no current signal is output when the data transmission interface 14 is connected with no external equipment, and electric energy is saved.
In the technical scheme provided by the embodiment of the disclosure, the protection module 15 is added between the boosting module 13 and the data transmission interface 14, and when the voltage signal at the data transmission interface 14 is greater than or equal to the second preset voltage value, the voltage signal at the data transmission interface 14 is reduced to the third preset voltage value, so that when wired charging is performed, the damage of the boosting module 13 caused by the high voltage at the data transmission interface 14 is avoided.
In one embodiment, fig. 3 is a block diagram of a wireless charging power supply circuit according to an exemplary embodiment, as shown in fig. 3, the wireless charging module 11 includes a wireless charging receiving coil 110, a wireless charging chip 111, and a first filter circuit 112, an input terminal of the wireless charging chip 111 is connected to the wireless charging receiving coil 110, an output terminal of the wireless charging chip 111 is connected to an input terminal of the first filter circuit 112, and an output terminal of the first filter circuit 112 is connected to the power management module 12.
In one embodiment, fig. 4 is a block diagram of a wireless charging power supply circuit according to an exemplary embodiment, as shown in fig. 4, the wireless charging module 11 further includes a fifth filter circuit 113, and the wireless charging receiving coil 110 is connected to an input terminal of the wireless charging chip 111 through the fifth filter circuit 113.
The wireless charging receiving coil 110 sends the converted current signal to the fifth filter circuit 113, the fifth filter circuit 113 filters the received current signal and sends the filtered current signal to the wireless charging chip 111, and the wireless charging chip 111 sends the received filtered current signal to the power management module 12.
For example, fig. 5 is a circuit diagram of the wireless charging module 11 according to an exemplary embodiment, as shown in fig. 5, a model of the wireless charging chip 111 includes P9221-R, the first filter circuit 112 includes a capacitor C7512, a capacitor C7513, a capacitor C7514, and a capacitor C7515, the fifth filter circuit 113 includes a first filter sub-circuit, a second filter sub-circuit, and a third filter sub-circuit, the first filter sub-circuit includes a capacitor C7505, a capacitor C7506, a capacitor C7507, and a capacitor C7508, the second filter sub-circuit includes a capacitor C7509, a capacitor C7510, and a capacitor C7511, and the third filter sub-circuit includes a capacitor C7500, a capacitor C7501, a capacitor C7502, a capacitor C7503, and a capacitor C7504; one end of a capacitor C7505, one end of a capacitor C7506, one end of a capacitor C7507 and one end of a capacitor C7508 are all connected with a pin G2 of a wireless charging chip P9221-R, one end of the capacitor C7500, the capacitor C7501, the capacitor C7502, the capacitor C7503 and the capacitor C7504 after being connected in parallel is connected with a pin G2 of the wireless charging chip P9221-R, the other end of the capacitor C7500, the capacitor C7501, the capacitor C7502, the capacitor C7503 and the capacitor C7504 after being connected in parallel is connected with one end of a wireless charging receiving coil 110, the other end of the capacitor C7507 is connected with a pin G1 of the wireless charging chip P9221-R, the other end of the capacitor C7506 is connected with a pin A1 of the wireless charging chip P9221-R, the other end of the capacitor C7505 is connected with a pin B1 of the wireless charging chip P9221-R, and the other end of the capacitor C7508 is respectively connected with one end of the capacitor C7509, one end of the capacitor C7510, one end of the wireless charging coil C7511 and the wireless receiving coil C75110, And the G5 pin of the wireless charging chip P9221-R is connected, the other end of the capacitor C7511 is connected with the G9 pin of the wireless charging chip P9221-R, the other end of the capacitor C7510 is connected with the A6 pin of the wireless charging chip P9221-R, and the other end of the capacitor C7509 is connected with the B6 pin of the wireless charging chip P9221-R.
One end of the capacitor C7512, one end of the capacitor C7513, one end of the capacitor C7514 and one end of the capacitor C7515 are connected with an E1 pin of the wireless charging chip P9221-R, and the other end of the capacitor C7512, the other end of the capacitor C7513, the other end of the capacitor C7514 and the other end of the capacitor C7515 are all grounded.
It should be noted that, in order to ensure that the wireless charging chip P9221-R can normally receive and send signals, the H1 pin, the H2 pin, and the H3 pin of the wireless charging chip P9221-R are all connected to the G2 pin of the wireless charging chip P9221-R, the H4 pin, the H5 pin, and the H6 pin of the wireless charging chip P9221-R are all connected to the G5 pin of the wireless charging chip P9221-R, and the E2 pin, the E3 pin, the E4 pin, the E5 pin, and the E6 pin of the wireless charging chip P9221-R are all connected to the E1 pin of the wireless charging chip P9221-R.
The pin G2 and the pin G5 of the wireless charging chip P9221-R are used for receiving a current signal sent by the wireless charging receiving coil 110, sending the received current signal through the pin E1, filtering through the parallel capacitor C7512, the capacitor C7513, the capacitor C7514 and the capacitor C7515 to remove an interference signal, and sending the filtered interference signal to the power management module 12.
The capacitor C7507 is a starting capacitor and is used for providing an electric signal for a G1 pin of the wireless charging chip P9221-R; when the capacitor C7506 is conducted, the current signal output by the wireless charging receiving coil 110 is input to the pin A1 of the wireless charging chip P9221-R, and when the capacitor C7506 is not conducted, the current signal output by the wireless charging receiving coil 110 is forbidden to be input to the pin A1 of the wireless charging chip P9221-R; the capacitor C7505 is used for opening to the ground when the amplitude of the voltage signal corresponding to the current signal output by the wireless charging receiving coil 110 is too high, and protecting the pin B1 of the wireless charging chip P9221-R.
The capacitor C7511 is a starting capacitor and is used for providing an electric signal for a G6 pin of the wireless charging chip P9221-R; when the capacitor C7510 is conducted, the current signal output by the wireless charging receiving coil 110 is input to the pin A6 of the wireless charging chip P9221-R, and when the capacitor C7510 is not conducted, the current signal output by the wireless charging receiving coil 110 is forbidden to be input to the pin A6 of the wireless charging chip P9221-R; the capacitor C7509 is used for opening to the ground when the amplitude of the voltage signal corresponding to the current signal output by the wireless charging receiving coil 110 is too high, so as to protect the pin B6 of the wireless charging chip P9221-R; the capacitor C7500, the capacitor C7501, the capacitor C7502, the capacitor C7503, and the capacitor C7504 connected in parallel are used for filtering a current signal output by the wireless charging receiving coil 110.
Note that, in fig. 5, a network reference numeral XQ1 denotes connection to one end of the wireless charging reception coil 110, and a network reference numeral XQ2 denotes connection to the other end of the wireless charging reception coil 110.
In one embodiment, fig. 6 is a block diagram of a wireless charging power supply circuit according to an exemplary embodiment, as shown in fig. 6, the power management module 12 includes a power management chip 120, a voltage regulation circuit 121, a second filter circuit 122, a third filter circuit 123 and a voltage regulation circuit 124, an input end of the second filter circuit 122 is connected to an output end of the first filter circuit 112, an output end of the second filter circuit 122 is connected to an input end of the voltage regulation circuit 124 after passing through the power management chip 120, the voltage regulation circuit 121 and the third filter circuit 123 in sequence, and an output end of the voltage regulation circuit 124 is connected to the boost module 13.
The second filter circuit 122 filters the received current signal to remove an interference signal in the current signal, and then sends the filtered current signal to the power management chip 120, the power management chip 120 sends a voltage signal corresponding to the filtered current signal to the voltage regulating circuit 121, the voltage regulating circuit 121 regulates the voltage of the voltage signal to a certain value and sends the regulated voltage signal to the third filter circuit 123 for filtering, the third filter circuit 123 sends the filtered voltage signal to the voltage stabilizing circuit 124 for stabilizing voltage, and finally sends the stabilized voltage signal to the voltage boosting module 13.
For example, fig. 7 is a circuit diagram of the power management module 12 according to an exemplary embodiment, as shown in fig. 7, the model of the power management chip 120 includes a PM855B, the voltage regulation circuit 121 includes an inductor L7602, the second filter circuit 122 includes a capacitor C7657 and a capacitor C7659, the third filter circuit 123 includes a capacitor C7661, a capacitor C7662 and a capacitor C7663, the voltage regulation circuit 124 includes a zener diode E6007 and a zener diode E6008, one end of the capacitor C7657 and one end of the capacitor C7659 are respectively connected to the pin 69 of the power management chip PM855B and the pin E1 of the wireless charging chips P9221-R, one end of the inductor L7602 is connected to the pin 81 of the power management chip PM855B, the other end of the inductor L7602 is respectively connected to one end of the capacitor C7661, one end of the capacitor C7662, one end of the capacitor C763, a cathode of the zener diode E6007 and a cathode of the zener diode E6008, the other end of the capacitor C7659 and the other end of the capacitor C7659 are respectively connected to the cathode of the capacitor C7659, The other end of the capacitor C7661, the other end of the capacitor C7662, the other end of the capacitor C7663, the anode of the zener diode E6007 and the anode of the zener diode E6008 are all grounded.
The capacitor C7657 and the capacitor C7659 which are connected in parallel are used for filtering the received current signal and inputting the filtered current signal to the 69 th pin of the power management chip PM855B, and the power management chip PM855B outputs the received current signal through the 81 th pin; the inductor L7602 is used for adjusting a voltage signal corresponding to the current signal output by the power management chip PM 855B; the capacitor C7661, the capacitor C7662 and the capacitor C7663 which are connected in parallel are used for filtering a voltage signal output by the inductor L7602; the voltage stabilizing diode E6007 and the voltage stabilizing diode E6008 are configured to perform voltage stabilizing processing on the filtered voltage signals output by the capacitors C7661, C7662, and C7663 connected in parallel to obtain a stabilized voltage signal, and send the stabilized voltage signal to the voltage boosting module 13.
It should be noted that, in order to ensure that the power management chip PM855B can receive and send a current signal or a voltage signal, in practical use, the 82 nd pin, the 83 th pin, the 96 th pin, the 97 th pin, the 110 th pin, the 111 th pin, the 124 th pin and the 125 th pin of the power management chip PM855B are all connected to the 69 th pin of the power management chip PM 855B; the 80 th pin, the 94 th pin, the 95 th pin, the 108 th pin, the 109 th pin, the 122 th pin and the 123 th pin of the power management chip PM855B are all connected to the 81 th pin of the power management chip PM 855B.
Note that, a network reference numeral WXCD in fig. 7 indicates connection to the E1 pin of the wireless charging chip P9221-R in fig. 5.
In an embodiment, fig. 8 is a block diagram of a wireless charging power supply circuit according to an exemplary embodiment, as shown in fig. 8, the boost module 13 includes a boost chip 130, a boost filter circuit 131 and a fourth filter circuit 132, an input terminal of the boost filter circuit 131 is connected to an output terminal of the voltage stabilizing circuit 124, an output terminal of the boost filter circuit 131 is connected to an input terminal of the boost chip 130, an output terminal of the boost chip 130 is connected to an input terminal of the fourth filter circuit 132, and an output terminal of the fourth filter circuit 132 is connected to the protection module 15.
The output end of the detection module 16 is connected to an enable pin of the boost chip 130, the detection module 16 is executed by a processor of the electronic device, the processor controls the enable pin of the boost chip 130 to be enabled or disconnected, when the enable pin of the boost chip 130 is controlled to be enabled, the boost chip 130 is in a start state, the boost filter circuit 131 is used for boosting a voltage signal stabilized by the voltage stabilizing circuit 124 to a fourth preset voltage value and filtering the boosted voltage signal and then sending the voltage signal to the boost chip 130, the boost chip 130 is used for filtering a voltage signal filtered by the boost filter circuit 131, namely, a voltage signal boosted to the fourth preset voltage value, boosting the voltage signal boosted to the first preset voltage value and then sending the voltage signal to the fourth filter circuit 132, and the fourth filter circuit 132 is used for filtering the voltage signal boosted by the boost chip 130 and then sending the voltage signal to the protection module 15.
It should be noted that the selection of the fourth preset voltage value needs to be determined according to the current required by the external device connected at the data transmission interface, and the value of the fourth preset voltage value is different according to the difference in the current required by the external device, which is not limited in this embodiment.
Illustratively, fig. 9 is a circuit diagram of the boost module 13 according to an exemplary embodiment, as shown in fig. 9, the model of the boost chip 130 includes a TPS61253, the boost filter circuit 131 includes a capacitor C7668 and an inductor L7603, the fourth filter circuit 132 includes a capacitor C7671 and a capacitor C7672, a pin A3 of the boost chip TPS61253 is connected to one end of the inductor L7603, one end of the capacitor C7668, and a cathode of the zener diode E6007, the other end of the inductor L7603 is connected to a pin B1 and a pin B2 of the boost chip TPS61253, one end of the capacitor C7671 and one end of the capacitor C7672 are connected to a1 and a2 of the boost chip TPS61253, and the other end of the capacitor C767668, the other end of the capacitor C7671, and the other end of the capacitor C7672 are connected to ground.
The inductor L7603 is configured to boost the voltage signal after voltage stabilization to a fourth preset voltage value, the capacitor C7668 is configured to filter the voltage signal after the inductor L7603 boosts the voltage signal to the fourth preset voltage value and send the filtered voltage signal to a pin a3 of the boost chip TPS61253, the boost chip TPS61253 further boosts the voltage signal after the voltage signal is boosted to the fourth preset voltage value to the first preset voltage value and then sends the voltage signal to the fourth filter circuit 132, and the capacitor C7671 and the capacitor C7672, which are connected in parallel in the fourth filter circuit 132, are configured to filter the voltage signal after the voltage signal is boosted to the first preset voltage value and send the filtered voltage signal to the protection module 15.
Note that a network reference numeral DYSY in fig. 9 indicates a connection to the cathode of the zener diode E6007 in fig. 7.
In one embodiment, the protection module 15 includes an over-current and over-voltage protection chip, an input terminal of the over-current and over-voltage protection chip is connected to an output terminal of the fourth filter circuit 132, and an output terminal of the over-current and over-voltage protection chip is connected to an input terminal of the data transmission interface 14.
The output end of the detection module 16 is connected with an enabling pin of the over-current and over-voltage protection chip, the detection module 16 is executed by a processor of the electronic equipment, the processor controls the enabling pin of the over-current and over-voltage protection chip to be enabled or disconnected, and when the enabling pin of the over-current and over-voltage protection chip is controlled to be enabled, the over-current and over-voltage protection chip is in a starting state.
For example, fig. 10 is a circuit diagram of the protection module 15 according to an exemplary embodiment, and as shown in fig. 10, the types of the over-current and over-voltage protection chip include FPF2495UCX, pin a1 of the over-current and over-voltage protection chip FPF2495UCX is connected to pin a1 of the boost chip TPS61253, and pin A3 and pin B3 of the over-current and over-voltage protection chip FPF2495UCX are both connected to the data transmission interface 14.
The pin a1 of the over-current and over-voltage protection chip FPF2495UCX is configured to receive the filtered voltage signal sent by the fourth filter circuit 132, and send a current signal corresponding to the filtered voltage signal to the data transmission interface 14 through the pin A3 and the pin B3, and the pin a1 of the over-current and over-voltage protection chip is further configured to step down the voltage signal of the data transmission interface 14 to a second preset voltage value and apply the voltage signal to the pin a1 and the pin a2 of the boost chip 13 when it is determined that the voltage signal of the data transmission interface 14 is greater than or equal to a third preset voltage value, so as to ensure that the boost chip 13 is not damaged by over-voltage.
It should be noted that, in fig. 10, network reference sign sjk denotes connection to the data transmission interface 14, and network reference sign DYBH denotes connection to pins a1 and a2 of the boost chip TPS61253 in fig. 9.
Fig. 11 is a block diagram illustrating an electronic device 1100 including the wireless charging power supply circuit, the electronic device being adapted for use with a terminal, according to an example embodiment. For example, the electronic device 1100 may be a mobile phone, a computer, a tablet device, and the like.
The processing component 1101 generally controls the overall operation of the electronic device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1101 may include one or more processors 1120 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 1101 can include one or more modules that facilitate interaction between the processing component 1101 and other components. For example, the processing component 1101 can include a multimedia module to facilitate interaction between the multimedia component 1104 and the processing component 1101.
The memory 1102 is configured to store various types of data to support operation at the electronic device 1100. Examples of such data include instructions for any application or method operating on the electronic device 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1102 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 1103 provides power to the various components of the electronic device 1100, including the power supply circuitry described in the embodiments above. The power components 1103 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1100.
The multimedia component 1104 includes a screen that provides an output interface between the electronic device 1100 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1104 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the electronic device 1100 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
Audio component 1105 is configured to output and/or input audio signals. For example, the audio component 1105 may include a Microphone (MIC) configured to receive external audio signals when the electronic device 1100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in memory 1102 or transmitted via communications component 1108. In some embodiments, audio component 1105 further includes a speaker for outputting audio signals.
The I/O interface 1106 provides an interface between the processing component 1101 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
Sensor component 1107 includes one or more sensors to provide various aspects of state estimation for electronic device 1100. For example, sensor component 1107 may detect the open/closed state of electronic device 1100, the relative positioning of components, such as a display and keypad of electronic device 1100, sensor component 1107 may also detect a change in the position of electronic device 1100 or a component of electronic device 1100, the presence or absence of user contact with electronic device 1100, orientation or acceleration/deceleration of electronic device 1100, and a change in the temperature of electronic device 1100. Sensor assembly 1107 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. Sensor assembly 1107 may also include a photosensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1107 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 1108 is configured to facilitate communications between the electronic device 1100 and other devices in a wired or wireless manner. The electronic device 1100 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1108 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1108 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 1100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 1102 comprising instructions, executable by the processor 1120 of the electronic device 1100 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
The present embodiment provides a wireless charging power supply method, as shown in fig. 12, including the following steps 1201 to 123:
in step 1201, a current signal for wirelessly charging a battery is acquired.
In step 1202, a voltage signal corresponding to the current signal is boosted to a first preset voltage value.
In step 1203, a current signal corresponding to the voltage signal boosted to the first preset voltage value is sent to a data transmission interface.
Furthermore, when the current signal for wirelessly charging the battery is acquired, whether the data transmission interface has an electric signal or not needs to be detected, if the data transmission interface has the electric signal, it is indicated that the data transmission interface is connected with external equipment, at this time, the voltage signal corresponding to the current signal is boosted to a first preset voltage value, and the current signal corresponding to the voltage signal boosted to the first preset voltage value is sent to the data transmission interface.
Further, as shown in fig. 13, after step 1203 is executed, step 1204 and step 1205 are also included.
In step 1204, a voltage signal of the data transmission interface is detected.
In step 1205, when it is determined that the voltage signal of the data transmission interface is greater than or equal to a second preset voltage value, the voltage signal of the data transmission interface is stepped down to a third preset voltage value.
In the technical scheme provided by the embodiment of the disclosure, when acquiring a current signal for wirelessly charging a battery, an electronic device boosts a voltage signal corresponding to the current signal to a first preset voltage value, so that the boosted current signal is increased, and the increased current signal is sent to a data transmission interface. Like this, when the current signal who carries out wireless charging for the battery reduces, can send the current signal after the increase to the data transmission interface, and then can satisfy the required electric current of the external equipment of connection at the data transmission interface, guarantee when wireless charging, the external equipment of connection at the data transmission interface can normally work.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A wireless charging power supply circuit, comprising: the output end of the wireless charging module is connected with the input end of the power management module, the output end of the power management module is connected with the input end of the boosting module, the output end of the boosting module is connected with a data transmission interface of electronic equipment to supply current required by normal operation for external equipment, the input end of the detection module is connected with the data transmission interface, and the output end of the detection module is connected with the boosting module;
the power supply management module is used for receiving the current signal output by the wireless charging module and sending a voltage signal corresponding to the current signal to the boosting module when the boosting module is in a starting state;
the boosting module is used for boosting a voltage signal corresponding to the current signal to a first preset voltage value, inputting the boosted current signal to the data transmission interface to supply current required by normal operation for external equipment,
when the current signal output by the wireless charging module is unchanged, if the current signal output by the wireless charging module is matched with the current required by the external equipment, the voltage boosting module does not boost the voltage signal corresponding to the current signal output by the wireless charging module;
the detection module is used for controlling the boosting module to be in a starting state when detecting that the data transmission interface has an electric signal,
the action of the detection module is executed by a processor of the electronic equipment, and the processor controls the enabling and the disconnection of the power management module and the wireless charging module according to a time sequence.
2. The circuit of claim 1, further comprising a protection module, wherein an input terminal of the protection module is connected to an output terminal of the boost module, and an output terminal of the protection module is connected to a data transmission interface of the electronic device;
the protection module is used for reducing the voltage signal of the data transmission interface to a third preset voltage value when the voltage signal of the data transmission interface is determined to be larger than or equal to the second preset voltage value.
3. The circuit of claim 2, wherein the wireless charging module comprises a wireless charging receiving coil, a wireless charging chip and a first filter circuit, an input end of the wireless charging chip is connected with the wireless charging receiving coil, an output end of the wireless charging chip is connected with an input end of the first filter circuit, and an output end of the first filter circuit is connected with the power management module.
4. The circuit of claim 3, wherein the power management module comprises a power management chip, a voltage regulation circuit, a second filter circuit, a third filter circuit and a voltage regulator circuit, an input terminal of the second filter circuit is connected to an output terminal of the first filter circuit, an output terminal of the second filter circuit is connected to an input terminal of the voltage regulator circuit after passing through the power management chip, the voltage regulation circuit and the third filter circuit in sequence, and an output terminal of the voltage regulator circuit is connected to the boost module.
5. The circuit of claim 4, wherein the boost module comprises a boost chip, a boost filter circuit and a fourth filter circuit, an input terminal of the boost filter circuit is connected with an output terminal of the voltage stabilizing circuit, an output terminal of the boost filter circuit is connected with an input terminal of the boost chip, an output terminal of the boost chip is connected with an input terminal of the fourth filter circuit, and an output terminal of the fourth filter circuit is connected with the protection module;
the boost filter circuit is used for boosting the voltage signal stabilized by the voltage stabilizing circuit to a fourth preset voltage value, filtering the boosted voltage signal and sending the filtered boosted voltage signal to the boost chip;
the boosting chip is used for boosting the voltage signal filtered by the boosting filter circuit to a first preset voltage value and then sending the voltage signal to a fourth filter circuit;
and the fourth filter circuit is used for filtering the voltage signal boosted by the boosting chip and then sending the voltage signal to the protection module.
6. The circuit of claim 5, wherein the protection module comprises an over-current and over-voltage protection chip, an input end of the over-current and over-voltage protection chip is connected with an output end of the fourth filter circuit, and an output end of the over-current and over-voltage protection chip is connected with an input end of the data transmission interface.
7. The circuit of claim 3, wherein the wireless charging module further comprises a fifth filter circuit, and the wireless charging receiving coil is connected to the input terminal of the wireless charging chip through the fifth filter circuit.
8. An electronic device comprising the wireless charging power supply circuit of any one of claims 1-7.
9. A wireless charging and power supplying method performed by the wireless charging and power supplying circuit according to any one of claims 1 to 7, comprising:
acquiring a current signal for wirelessly charging a battery;
boosting a voltage signal corresponding to the current signal to a first preset voltage value;
sending a current signal corresponding to the voltage signal boosted to the first preset voltage value to a data transmission interface to supply current required by normal operation to external equipment,
when the current signal output by the wireless charging module is unchanged, if the current signal output by the wireless charging module is matched with the current required by the external equipment, the voltage boosting module does not perform voltage boosting processing on the voltage signal corresponding to the current signal output by the wireless charging module.
10. The power supply method according to claim 9, wherein the step of boosting the voltage signal corresponding to the current signal to a first preset voltage value comprises:
and when the data transmission interface is detected to have an electric signal, boosting a voltage signal corresponding to the current signal to a first preset voltage value.
11. The power supply method according to claim 9 or 10, further comprising:
detecting a voltage signal of the data transmission interface;
and when the voltage signal of the data transmission interface is determined to be greater than or equal to a second preset voltage value, the voltage signal of the data transmission interface is reduced to a third preset voltage value.
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| CN202978381U (en) * | 2012-06-14 | 2013-06-05 | 深圳市方卡科技股份有限公司 | Light controllable wireless charging smart card and charging circuit thereof |
| CN103208832B (en) * | 2013-03-14 | 2014-12-17 | 深圳市中远航科技有限公司 | Solar wireless charging power supply |
| CN103347104B (en) * | 2013-06-09 | 2015-11-25 | 惠州Tcl移动通信有限公司 | The mobile device that can externally charge |
| CN103378636B (en) * | 2013-06-28 | 2015-05-06 | 深圳市富满电子集团股份有限公司 | Mobile power source control chip and mobile power source with same |
| CN103368242A (en) * | 2013-07-26 | 2013-10-23 | 华南理工大学 | Wireless charging receiving device with USB (Universal Serial Bus) interfaces of electronic equipment |
| KR102184527B1 (en) * | 2015-08-19 | 2020-11-30 | 삼성전자주식회사 | Electronic apparatus and method for wire and wireless charging in electronic apparatus |
| CN105490334A (en) * | 2015-12-18 | 2016-04-13 | 上海优思通信科技有限公司 | Charging system and method for portable electronic devices |
| CN107707000B (en) * | 2017-11-16 | 2022-01-28 | 珠海市魅族科技有限公司 | OTG power supply and wireless charging compatible circuit, related method and terminal equipment |
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