CN111756095B - Wireless charging method, device, terminal and storage medium - Google Patents
Wireless charging method, device, terminal and storage medium Download PDFInfo
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- CN111756095B CN111756095B CN202010659322.2A CN202010659322A CN111756095B CN 111756095 B CN111756095 B CN 111756095B CN 202010659322 A CN202010659322 A CN 202010659322A CN 111756095 B CN111756095 B CN 111756095B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
Abstract
The present disclosure relates to a wireless charging device, method, terminal, and storage medium; the wireless charging device includes: the charging circuit, the protection circuit and the control circuit; wherein the charging circuit comprises: at least one coil; the protection circuit is respectively connected with the control circuit and the charging circuit; the control circuit is used for switching the switching state of the protection circuit when the charging circuit is abnormal in charging so as to switch the protection circuit from a non-protection state to a protection state; wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected. The wireless charging method can reduce the phenomenon of extremely high voltage impact caused by the fact that a coil is not in time to be disconnected when the charging circuit has an abnormal problem; therefore, the loss of the charging circuit is reduced, and the working safety of the first terminal is improved.
Description
Technical Field
The present disclosure relates to the field of wireless charging technologies, and in particular, to a wireless charging method, an apparatus, a terminal, and a storage medium.
Background
With the development of wireless charging technology, more and more terminals, including many wearable devices and intelligent terminals, start to use wireless charging technology for charging. At present, a Wireless charging receiving terminal of a Wireless Power Consortium (WPC) provides digital information to a transmitting terminal in an alternating current load modulation manner, so that the transmitting terminal adjusts corresponding communication information. However, with the continuous increase of the power of the wireless charging in the application, how to ensure the working safety of the receiving end under the condition that the wireless charging is suddenly interrupted is a problem to be further solved in the related art.
Disclosure of Invention
The disclosure provides a wireless charging method, a wireless charging device, a terminal and a storage medium.
According to a first aspect of the embodiments of the present disclosure, there is provided a wireless charging device applied to a first terminal, the wireless charging device including: the charging circuit, the protection circuit and the control circuit; wherein, the first and the second end of the pipe are connected with each other,
the charging circuit includes: at least one coil;
the protection circuit is respectively connected with the control circuit and the charging circuit;
the control circuit is used for switching the switching state of the protection circuit when the charging circuit is abnormal in charging so as to switch the protection circuit from a non-protection state to a protection state;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected.
In the above scheme, the protection circuit includes: at least one first switching device; the first switching device is connected with the coil in series;
the first switching device is switched off, and the protection circuit is in a protection state; the first switching device is closed, and the protection circuit is in a non-protection state.
In the above scheme, the protection circuit includes: at least one second switching device; one of said coils being connected in parallel with at least one of said second switching devices;
the second switching device is closed, and the protection circuit is in the protection state;
the second switching device is turned off, and the protection circuit is in a non-protection state.
In the above scheme, the control circuit is configured to send a charging stop signal to the second terminal through the coil before controlling the protection circuit to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
In the foregoing solution, the control circuit is configured to send an adjustment instruction for reducing charging power to the second terminal before the coil sends the charging stop signal.
In the foregoing solution, the adjusting instruction includes:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
According to a second aspect of the embodiments of the present disclosure, there is provided a wireless charging method applied to a first terminal, where the first terminal includes a charging circuit and a protection circuit; the protection circuit with charging circuit connects, charging circuit includes: at least one coil;
the method comprises the following steps:
when the charging circuit is abnormal, the protection circuit is controlled to be switched from a non-protection state to a protection state by switching the switching state of the protection circuit;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected.
In the above solution, the protection circuit includes at least one first switching device connected in series with the coil;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the first switching device.
In the above scheme, the protection circuit includes: at least one second switching device; one of said coils being connected in parallel with at least one of said second switching devices;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the second switching device.
In the above scheme, the method further comprises:
sending a charging stop signal to a second terminal through the coil before controlling the protection circuit to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
In the above scheme, the method further comprises:
and sending an adjustment instruction for reducing the charging power to the second terminal before sending the charging stop signal.
In the foregoing solution, the adjusting instruction includes:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: when the executable instructions are executed, the wireless charging method according to any embodiment of the disclosure is realized.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium storing an executable program, wherein the executable program, when executed by a processor, implements the wireless charging method of any embodiment of the present disclosure.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in an embodiment of the present disclosure, the wireless charging apparatus includes: the charging circuit, the protection circuit and the control circuit; wherein the charging circuit comprises: at least one coil; the protection circuit is respectively connected with the control circuit and the charging circuit; the control circuit is used for switching the switching state of the protection circuit when the charging circuit is abnormal in charging so as to switch the protection circuit from a non-protection state to a protection state; wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected. Therefore, in the embodiment of the disclosure, when the charging circuit is abnormal, the on-off state of the protection circuit can be controlled through the control circuit, so that the charging circuit where the coil is located is disconnected, and the phenomenon of extremely high voltage impact caused by the fact that the coil is not in time to be disconnected when the charging circuit has an abnormal problem is greatly reduced; therefore, the loss of the charging circuit is reduced, and the working safety of the first terminal is improved.
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 invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram illustrating a wireless charging system according to an example embodiment.
Fig. 2 is a flow diagram illustrating a wireless charging BPP protocol according to an example embodiment.
Fig. 3 is a block diagram illustrating a wireless charging device according to an example embodiment.
Fig. 4 is a block diagram illustrating a wireless charging device according to an example embodiment.
Fig. 5 is a block diagram illustrating a wireless charging apparatus in accordance with an example embodiment.
Fig. 6 is a flow chart illustrating a wireless charging method according to an example embodiment.
Fig. 7 is a flow chart illustrating a wireless charging method in accordance with an example embodiment.
Fig. 8 is a flow chart illustrating a wireless charging method according to an example embodiment.
Fig. 9 is a block diagram illustrating a terminal including a wireless charging device according to an example 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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the related art, as shown in fig. 1, a schematic diagram of a wireless charging system is provided; the wireless charging system comprises a receiving end and a transmitting end which are charged wirelessly. In the wireless charging system, a power supply conversion module transmits wireless charging energy to a receiving end; the receiving end transmits the load modulation information to the transmitting end; the transmitting end transmits information to the receiving end through frequency modulation.
Here, the receiving end may be a first terminal in the following embodiments; the sending end may be the second terminal in the following embodiments.
As shown in fig. 2, a flow diagram of a Basic Power Profile (BPP) protocol for wireless charging is provided. The BPP protocol includes 4 phases: a selection phase, a Ping signal phase, an authentication and configuration phase, and a power transmission phase.
Wherein, in the selection stage, which protocol is selected for charging; the BPP protocol is selected for charging; the charging power corresponding to the BPP protocol is less than or equal to 5W.
In the stage of Ping signals, a sending end sends a Ping signal; if the sending end receives a feedback signal returned by the receiving end based on the Ping signal, entering an authentication and configuration stage; and if the feedback signal is not received within the preset time, the sending of the Ping signal is terminated.
In the authentication and configuration stage, after receiving the pulse signal sent by the sending end, the receiving end returns an identity identification signal to the receiving end for authentication; and the receiving end sends the configuration information to the sending end, so that the wireless charging is carried out under the corresponding configuration information. For example, the configuration information may be configuration information carrying an operating frequency.
In the power transmission stage, the sending end starts to send a wireless charging signal based on the configuration information so as to charge the receiving end.
Fig. 3 is a block diagram illustrating a wireless charging apparatus according to an exemplary embodiment, as shown in fig. 1, the wireless charging apparatus including:
a charging circuit 11, a protection circuit 12, and a control circuit 13; wherein, the first and the second end of the pipe are connected with each other,
the charging circuit 11 includes: at least one coil 110;
the protection circuit 12 is connected to the control circuit 13 and the charging circuit 11 respectively;
the control circuit 13 is configured to switch a switching state of the protection circuit 12 when charging abnormality occurs in the charging circuit 11, so that the protection circuit 12 is switched from a non-protection state to a protection state;
wherein, the protection circuit 12 is in a protection state, and the charging circuit where the coil 110 is located is disconnected.
The wireless charging device according to the embodiment of the disclosure is applied to a first terminal. Here, the first terminal may be any electronic device that can receive a radio frequency signal. For example, the first terminal may be a mobile device such as a mobile phone or a notebook computer; as another example, other stationary devices capable of receiving wireless charging.
Here, the coil 110 is used to generate electromagnetic induction to transmit or receive a wireless charging signal. And when the coil receives a wireless charging signal, charging the first terminal.
In some embodiments, the number of coils is one.
In other embodiments, the coil is plural, and the plural coils are connected in series.
Here, the protection circuit 12 includes at least one switching device; switching of the protection current from the non-protection state to the protection state may be achieved based on the closing or opening of the switching device.
Of course, in other embodiments, the protection circuit may be a loop including other elements as long as it is satisfied that the protection circuit can be switched from the non-protection state to the protection state when the control circuit switches the switch state.
Here, the control circuit 13 may include one or more processing chips or processors; the control circuit can control the on and off of the switching device in the first terminal to complete corresponding operation. For example, the control circuit may control the switching device in the protection circuit to be turned on or off to complete charging or non-charging of the first terminal.
Here, the protection circuit is connected to the control circuit, and may be connected in series or in parallel. For example, a switching device in the protection circuit may be connected in series with at least one coil in the control circuit; alternatively, a switching device in the protection circuit may be connected in parallel with one coil in the control circuit.
In the embodiment of the present disclosure, when the protection circuit is in a non-protection state, the charging circuit where the coil is located is turned on; at this time, the first terminal is charged. When the protection circuit is in a protection state, the charging circuit where the coil is located is disconnected; at this time, the first terminal charging is interrupted.
Therefore, in the embodiment of the disclosure, when the charging circuit is abnormal, the on-off state of the protection circuit can be controlled through the control circuit, so that the charging circuit where the coil is located is disconnected, thereby greatly reducing the phenomenon that the coil is not disconnected in time to generate extremely high voltage impact when the charging circuit has an abnormal problem, and further reducing the loss of the charging circuit and improving the working safety of the first terminal.
In some embodiments, the protection circuit includes: at least one first switching device; the first switching device is connected with the coil in series;
the first switching device is switched off, and the protection circuit is in a protection state; the first switching device is closed, and the protection circuit is in a non-protection state.
Here, the first switching device may be one or more.
If the number of the first switch devices is multiple, the protection circuit is in a protection state when at least one first switch device in the multiple switch devices is disconnected; when all the first switching devices are closed, the protection circuit is in a non-protection state.
For example, as shown in fig. 4, the number of coils in the charging circuit is 3, which are L1, L2, and L3; the number of the first switch devices is 2, namely K11 and K12. The K11 is connected between the L1 and the L2, and the K12 is connected between the L2 and the L3. Here, when at least one of the K11 and the K12 is off, the protection circuit is in a protection state; and when the K11 and the K12 are both closed, the protection circuit is in a non-protection state.
Of course, in the above example, the number of the first switching devices may also be 1, or 3 or more.
Of course, in the above example, referring again to fig. 4, the first switching device may be connected between the input terminal of the charging circuit and the coil L1, or between the L3 of the charging circuit and the output terminal.
Of course, in the above example, if there are 1 coil, the first switching device is connected between the input terminal and the coil, or between the output terminal and the coil.
Of course, in the above example, if there are a plurality of coils, the number of the first switching devices may be 1 or more. Referring to fig. 4 again, when the number of the first switching devices is 1, the first switching device is connected between the input terminal and L1. In this way, a plurality of coils can also be protected by one first switching device.
In this disclosure, the number of the first switching devices may be less than or equal to the number of the coils, and it is only necessary that at least one first switching device is connected in series with the coils in the charging loop where each coil is located.
In the embodiment of the disclosure, when the protection circuit is connected in series with the charging circuit, if the charging circuit is abnormal in charging, at least one first switching device connected in series with the coil in the protection circuit is turned off, so that the protection circuit can be switched from a non-protection state to a protection state, thereby reducing the occurrence of a situation that the coil generates an extremely high voltage due to the abnormal charging of the charging circuit, and ensuring the working safety of the first terminal.
Here, the first switching device is turned off, and the coil in the charging circuit is turned off from charging due to the open circuit.
Of course, when the charging circuit is eliminated abnormally, all the first switching devices can be closed, so that the protection circuit is switched from the protection state to the non-protection state, namely the charging circuit where the coil is located is conducted; so that charging can be resumed.
In some embodiments, the protection circuit includes: at least one second switching device;
one of said coils being connected in parallel with at least one of said second switching devices;
the second switching device is closed, and the protection circuit is in the protection state;
the second switching device is turned off, and the protection circuit is in a non-protection state.
Here, the number of the second switching devices is greater than or equal to the number of the coils; and each coil is connected in parallel with at least one of the second switching devices. For example, when the number of the second switching devices is equal to the number of the coils, one second switching device is connected in parallel to each coil. For another example, when the number of the second switching devices is greater than the number of the coils, at least one coil is connected with a plurality of second switching devices in parallel.
Here, the second switching device may be one or more.
If the number of the second switching devices is multiple, the protection circuit is in a protection state when all the second switching devices are closed; when at least one of the second switching devices is turned off, the protection circuit is in a non-protection state.
For example, as shown in fig. 5, the number of coils in the charging circuit is 3, which are L1, L2, and L3; the number of the second switch devices is 3, and the second switch devices are respectively K21, K22 and K23. The K21 is connected in parallel to the L1, the K22 is connected in parallel to the L2, and the K23 is connected in parallel to the L3. Here, when all of the K21, the K22, and the K23 are closed, the protection circuit is in a protection state; when at least one of the K21, the K22 and the K23 is disconnected, the protection circuit is in a non-protection state.
Of course, in the above example, if the coil has only one L1, the second switching device may have only one K21.
Of course, in the above example, 2 or more than 2 second switching devices may be connected in parallel to one coil.
In the embodiment of the disclosure, when the protection circuit is connected in parallel with the charging circuit, if the charging circuit is abnormal in charging, all the second switching devices connected in parallel with the coil in the protection circuit are closed, so that the protection circuit can be switched from a non-protection state to a protection state, thereby reducing the occurrence of a situation that the coil generates an extremely high voltage due to abnormal charging of the charging circuit, and ensuring the working safety of the first terminal.
Here, the second switching device is closed, and the coil in the charging circuit is charged off due to a short circuit.
Of course, when the charging circuit is eliminated abnormally, the second switching device on at least one coil can be switched off to switch the protection circuit from the protection state to the non-protection state, that is, the charging circuit where at least one coil is located is switched on; so that charging can be resumed.
Of course, in other embodiments, the protection circuit may also protect the first switching device and the second switching device; wherein the first switching device is in series with a coil and the second switching device is in parallel with the coil. Thus, the protection circuit can be switched from the non-protection state to the protection state by opening at least one first switching device and/or closing all second switching devices, or opening at least one first switching device and closing at least one second switching device, so that the charging circuit where the coil is located is opened.
In some embodiments, the control circuit 13 is configured to send a charging stop signal to the second terminal through the coil 110 before controlling the protection circuit 12 to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
In one embodiment, the charge stop signal may be a pulse signal. Of course, in other embodiments, the wireless signal may also be a wireless signal with other waveforms, and only the charging stop signal needs to be satisfied for triggering the second terminal to stop the wireless charging.
Here, the second terminal stopping wireless charging is: the second terminal stops discharging.
In the embodiment of the present disclosure, before the first terminal controls the protection circuit to enter the protection state, that is, before the coil in the charging circuit stops receiving the wireless charging signal for charging, the charging stop signal may be sent to the first terminal, so that the second terminal stops discharging. Therefore, when the second terminal stops discharging, the first terminal can stop charging in time, and therefore the charging safety of the first terminal can be improved; on the other hand, the waste of the electric quantity of the second terminal which still continues to discharge when the first terminal does not need to be charged can be reduced.
In some embodiments, the control circuit 13 is configured to send an adjustment instruction for decreasing the charging power to the second terminal before the coil 110 sends the charging stop signal.
Here, the adjustment instruction includes:
adjusting instructions for adjusting the working frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
Here, the adjustment instruction may also be an adjustment instruction carrying a Control Error Packet (CEP); the CEP is used to inform the second terminal of the adjusted operating frequency and/or charging voltage.
In the embodiment of the present disclosure, the adjustment instruction for adjusting the operating frequency is an adjustment instruction for adjusting the operating frequency to increase to a predetermined operating frequency; the adjustment instruction for adjusting the charging voltage is an adjustment instruction for adjusting the charging voltage to be reduced to a preset charging voltage. Thus, based on the adjustment of the adjustment instruction, the second terminal reduces the charging power.
In this embodiment of the present disclosure, when the second terminal is triggered to stop the wireless charging, an adjustment instruction for adjusting the operating frequency and/or the charging voltage may be sent first, so that the wireless charging of the second terminal is stopped when the charging power of the second terminal is reduced first or is reduced step by step. Therefore, the second terminal does not stop wireless discharge suddenly in a very short time, the loss caused by the emergency stop of wireless charging of the second terminal in a very short time can be reduced, and the emergency stop of wireless charging of the first terminal can be reduced.
Fig. 6 illustrates a wireless charging method applied to a first terminal including a charging circuit and a protection circuit according to an exemplary embodiment; the protection circuit with charging circuit connects, charging circuit includes: at least one coil;
the method comprises the following steps:
step S22, when the charging circuit is abnormal, the protection circuit is controlled to be switched from a non-protection state to a protection state by switching the switch state of the protection circuit;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected.
In one embodiment, the number of coils is one.
In another embodiment, the coil is plural; a plurality of the coils are connected in series.
In an embodiment, the first terminal further comprises a control circuit, and the control circuit is connected with the protection circuit;
the step S22 includes: when the charging circuit is abnormal, the control circuit switches the switch state of the protection circuit to control the protection circuit to switch from the non-protection state to the protection state.
In the embodiment of the disclosure, when the charging circuit is abnormal, the switching state of the protection circuit can be switched to disconnect the charging circuit where the coil is located, so that the phenomenon of high voltage impact caused by the fact that the coil is not disconnected in time when the charging circuit has an abnormal problem is greatly reduced, the loss of the charging circuit can be reduced, and the working safety of the first terminal can be improved.
In some embodiments, the protection circuit comprises at least one first switching device in series with the coil;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the first switching device.
In some embodiments, the protection circuit includes: at least one second switching device; one of said coils being connected in parallel with at least one of said second switching devices;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the second switching device.
In some embodiments, the method further comprises:
step S21, before controlling the protection circuit to enter the protection state, sending a charging stop signal to a second terminal through the coil; the charging stop signal is used for triggering the second terminal to stop wireless charging.
In the above embodiment, the first terminal sends the charging stop signal to the second terminal through the coil as in-band communication.
Of course, in other embodiments, the first terminal may also send the information triggering the second terminal to stop wireless charging by way of out-of-band communication. For example, the first terminal sends control error data CEP to the second terminal, the CEP informing the second terminal to stop wireless charging.
Here, several ways of implementing the out-of-band communication may be through NFC, zigbee, or bluetooth.
In the embodiment of the present disclosure, the first terminal may be notified to stop the wireless discharge before the coil of the first terminal enters the protection state; therefore, the first terminal can stop charging in time when the second terminal stops discharging, and therefore, on one hand, the charging safety of the first terminal can be improved; on the other hand, the waste of the electric quantity of the second terminal which still continues to discharge when the first terminal does not need to be charged can be reduced.
In some embodiments, the method further comprises:
step S20, before sending the charging stop signal, sending an adjustment instruction to reduce the charging power to the second terminal.
In some embodiments, the adjustment instructions include:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
In the embodiment of the present disclosure, the first terminal sends the adjustment instruction to the second terminal, and may also be based on an in-band communication mode or an out-of-band communication mode. The coil can be controlled by a control circuit of the first terminal to send out a wireless charging signal with the working frequency lower than the preset working frequency by adopting an in-band communication mode. And an out-of-band communication mode is adopted, and an adjusting instruction can be sent to the second terminal through the first terminal based on a wireless network or Bluetooth and the like.
In the embodiment of the present disclosure, controlling the reduction of the charging power of the second terminal may be by gradually controlling the reduction of the power of the second terminal. For example, an adjustment instruction for adjusting the charging voltage to be reduced to a first value is sent at a first moment, and an adjustment instruction for adjusting the charging voltage to be reduced to a second value is sent at a second moment; wherein the first time is earlier than the second time, and the first value is greater than the second value.
In this embodiment of the disclosure, before the second terminal stops wireless discharging, the second terminal may be triggered to decrease or gradually decrease the operating frequency and/or the charging voltage of the second terminal, so that the second terminal is triggered to stop wireless charging after the second charging power is decreased or gradually decreased. Thus, it is possible to reduce the loss of the second terminal due to emergency stop of wireless charging in a short time, and to reduce the occurrence of an emergency stop of wireless charging of the first terminal.
To further illustrate the embodiments of the present disclosure in detail, two specific embodiments are provided below.
Example 1
Fig. 7 illustrates a wireless charging method applied to a first terminal according to an exemplary embodiment; the method comprises the following steps:
here, the first terminal is a receiving end for wireless charging; the second terminal is a wireless charging sending terminal.
Here, the first terminal includes: the protection circuit, the charging circuit and the control circuit; the protection circuit comprises at least one first switching device or at least one second switching device; the charging circuit comprises at least one coil; the protection circuit is respectively connected with the control circuit and the charging circuit.
Step S31: determining that wireless charging needs to be shut down;
optionally, the first terminal determines that wireless charging needs to be turned off. For example, the first terminal determines that wireless charging needs to be shut down in response to a charging abnormality occurring in the charging circuit. In another example, the first terminal determines that wireless charging needs to be turned off based on a triggering operation of a user.
Step S32: transmitting a first CEP to a second terminal, wherein the first CEP is used for reducing the operating frequency of the second terminal to a predetermined operating frequency;
optionally, the first terminal sends a first CEP to the second terminal, where the first CEP is configured to reduce an operating frequency of the second terminal to a predetermined operating frequency.
Step S33: switching the switch state of the protection circuit to control the protection circuit to switch from a non-protection state to a protection state;
optionally, the first terminal switches a switching state of the protection circuit by using the control circuit to control the protection circuit to switch from a non-protection state to a protection state.
Here, in the protection state of the protection circuit, the charging circuit in which the coil is located is open.
Here, if at least one first switching device in the protection circuit is connected in series with the coil of the charging circuit, at least one first switching device is turned off to control the protection circuit to switch from a non-protection state to a protection state;
if at least one second switching device in the protection circuit is connected with a coil of the charging circuit in parallel, one second switching device is connected with each coil in parallel; all of the second switching devices are closed to control the protection circuit to switch from a non-protected state to a protected state.
Step S34: the wireless charging is stopped.
In the embodiment of the present disclosure, the charging circuit in which the coil is located may be turned off by controlling the switching state of the protection circuit of the first circuit; therefore, the first terminal can be disconnected from the charging circuit where the coil is located when charging is abnormally stopped emergently, so that the loss of the coil to the first terminal caused by high-voltage charging generated by the coil is reduced, and the charging safety of the first terminal can be guaranteed.
In addition, in the embodiment of the present disclosure, before the charging circuit where the coil is located is disconnected by controlling the switching state of the protection circuit of the first terminal, a first CEP for increasing the operating frequency may be further sent to the second terminal; therefore, before the wireless charging of the second terminal is stopped, the purpose of reducing the charging power can be achieved by increasing the working frequency; thereby, it is possible to reduce the loss of the second terminal and to reduce the occurrence of an emergency stop of charging in an extremely short time.
Example two
Fig. 8 illustrates a wireless charging method according to an example embodiment, the method comprising:
step S41: determining that wireless charging needs to be shut down;
optionally, the first terminal determines that wireless charging needs to be turned off. For example, the first terminal determines that wireless charging needs to be shut down in response to a charging abnormality occurring in the charging circuit. In another example, the first terminal determines that the wireless charging needs to be turned off based on a triggering operation of the user.
Step S42: transmitting a second CEP to a second terminal, wherein the second CEP is configured to reduce a charging voltage of the second terminal to a predetermined charging voltage;
optionally, the first terminal sends a second CEP to the second terminal, wherein the second CEP is configured to reduce the charging voltage of the second terminal to a predetermined charging voltage.
In an alternative embodiment, the second terminal may also reduce the charging voltage of the first terminal by reducing the charging current of the first terminal load. For example, controlling the charging current of the first terminal to be reduced to a predetermined charging current; in this way, the charging power of the second terminal is reduced, so that the charging voltage of the second terminal can be indirectly reduced.
Step S43: switching the switch state of the protection circuit to control the protection circuit to switch from a non-protection state to a protection state;
optionally, the first terminal switches a switching state of the protection circuit by using the control circuit to control the protection circuit to switch from a non-protection state to a protection state.
Here, in the protection state of the protection circuit, the charging circuit in which the coil is located is disconnected.
Here, if at least one first switching device in the protection circuit is connected in series with a coil of the charging circuit, at least one first switching device is turned off to control the protection circuit to switch from a non-protection state to a protection state;
if at least one second switching device in the protection circuit is connected with the coil of the charging circuit in parallel, one second switching device is connected with each coil in parallel; all of the second switching devices are closed to control the protection circuit to switch from a non-protected state to a protected state.
Step S44: the wireless charging is stopped.
In the embodiment of the present disclosure, the charging circuit in which the coil is located may be turned off by controlling the switching state of the protection circuit of the first circuit; therefore, the first terminal can be disconnected from the charging circuit where the coil is located when charging is abnormally stopped emergently, so that the loss of the coil to the first terminal caused by high-voltage charging generated by the coil is reduced, and the charging safety of the first terminal can be guaranteed.
In addition, in the embodiment of the present disclosure, before the charging circuit where the coil is located is disconnected by controlling the switching state of the protection circuit of the first terminal, a second CEP for reducing the charging voltage may be further sent to the second terminal; therefore, the purpose of reducing the charging power can be achieved by reducing the charging voltage before the wireless charging of the second terminal is stopped; thereby, it is possible to reduce the loss of the second terminal and to reduce the occurrence of an emergency stop of charging in an extremely short time.
An embodiment of the present disclosure provides a terminal, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: when the executable instructions are executed, the wireless charging method according to any embodiment of the disclosure is realized.
Here, the terminal is a wireless charging device. In an embodiment, the terminal is a wireless charging receiving terminal.
The memory may include various types of storage media, which are non-transitory computer storage media capable of continuing to remember the information stored thereon after a power loss to the communication device.
The processor may be connected to the memory via a bus or the like for reading the executable program stored on the memory, e.g. for implementing at least one of the methods as shown in fig. 6-8.
The detailed description of the method in the above embodiments has been described in detail in relation to the embodiments of the electronic device, and will not be elaborated upon here.
Fig. 9 is a block diagram illustrating a terminal 800 including a wireless charging device according to an example embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
Referring to fig. 9, terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operation at the terminal 800. Examples of such data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 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 component 806 provides power to the various components of the terminal 800. Power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal 800.
The multimedia component 808 includes a screen providing an output interface between the terminal 800 and the 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 808 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 terminal 800 is in an operation mode, such as a photographing 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.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal 800 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 the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 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.
In an exemplary embodiment, the terminal 800 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 804 comprising instructions, executable by the processor 820 of the terminal 800 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 embodiment of the disclosure provides a non-transitory computer readable storage medium, which stores an executable program, wherein when the executable program is executed by a processor, the wireless charging method according to any embodiment of the disclosure can be implemented.
For example, in some embodiments, the executable program, when executed by the processor, enables the first terminal to perform a wireless charging method, the method comprising:
when the charging circuit is abnormal, the protection circuit is controlled to be switched from a non-protection state to a protection state by switching the switching state of the protection circuit;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected.
In some embodiments, the protection circuit comprises at least one first switching device in series with the coil;
the executable program, when executed by the processor, enables the first terminal to perform the step of controlling the protection circuit to switch from a non-protection state to a protection state by switching a switch state of the protection circuit:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the first switching device.
In some embodiments, the protection circuit includes: at least one second switching device; one of said coils being connected in parallel with at least one of said second switching devices;
the executable program, when executed by the processor, enables the first terminal to perform the step of controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the second switching device.
In some embodiments, the executable program, when executed by the processor, enables the first terminal to perform the steps of:
sending a charging stop signal to a second terminal through the coil before controlling the protection circuit to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
In some embodiments, the executable program, when executed by the processor, enables the first terminal to perform the steps of:
and sending an adjustment instruction for reducing the charging power to the second terminal before sending the charging stop signal.
Here, the adjustment instruction includes:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention 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 invention is limited only by the appended claims.
Claims (14)
1. A wireless charging device applied to a first terminal, the wireless charging device comprising: the charging circuit, the protection circuit and the control circuit; wherein the content of the first and second substances,
the charging circuit includes: at least one coil;
the protection circuit includes: at least one switching device connected in parallel or in series with the coil;
the protection circuit is respectively connected with the control circuit and the charging circuit;
the control circuit is used for switching the switching state of the switching device in the protection circuit when the charging circuit has charging abnormity, so that the protection circuit is switched from a non-protection state to a protection state;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected;
the control circuit is further configured to send an adjustment instruction for reducing the charging power to the second terminal after the charging circuit is charged abnormally and before the protection circuit is switched from the non-protection state to the protection state.
2. The wireless charging apparatus of claim 1, wherein the protection circuit comprises: at least one first switching device; the first switching device is connected with the coil in series;
the first switching device is disconnected, and the protection circuit is in a protection state; the first switching device is closed, and the protection circuit is in a non-protection state.
3. The wireless charging apparatus of claim 1, wherein the protection circuit comprises:
at least one second switching device; one of said coils is connected in parallel with at least one of said second switching devices;
the second switching device is closed, and the protection circuit is in the protection state;
the second switching device is turned off, and the protection circuit is in a non-protection state.
4. The wireless charging apparatus of claim 1,
the control circuit is used for sending a charging stop signal to the second terminal through the coil before controlling the protection circuit to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
5. The wireless charging apparatus of claim 4,
and the control circuit is used for controlling the coil to send an adjustment instruction for reducing the charging power to the second terminal before sending the charging stop signal.
6. The wireless charging apparatus of claim 5, wherein the adjustment instruction comprises:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the atmosphere,
and adjusting the adjustment instruction of the charging voltage.
7. A wireless charging method is applied to a first terminal, wherein the first terminal comprises a charging circuit and a protection circuit; the protection circuit with charging circuit connects, charging circuit includes: at least one coil; the protection circuit includes: at least one switching device connected in parallel or in series with the coil;
the method comprises the following steps:
when the charging circuit is abnormal, the protection circuit is controlled to be switched from a non-protection state to a protection state by switching the switching state of the switching device in the protection circuit;
wherein, the protection circuit is in a protection state, and the charging circuit where the coil is located is disconnected; and sending an adjusting instruction for reducing the charging power to the second terminal after the charging circuit is charged abnormally and before the protection circuit is switched from the non-protection state to the protection state.
8. The method of claim 7, wherein the protection circuit comprises at least one first switching device in series with the coil;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the first switching device.
9. The method of claim 7, wherein the protection circuit comprises: at least one second switching device; one of said coils being connected in parallel with at least one of said second switching devices;
the controlling the protection circuit to switch from a non-protection state to a protection state by switching a switching state of the protection circuit includes:
and controlling the protection circuit to be switched from the non-protection state to the protection state by opening the second switching device.
10. The method of claim 7, further comprising:
sending a charging stop signal to the second terminal through the coil before controlling the protection circuit to enter the protection state; the charging stop signal is used for triggering the second terminal to stop wireless charging.
11. The method of claim 10, further comprising:
and sending an adjustment instruction for reducing the charging power to the second terminal before sending the charging stop signal.
12. The method of claim 11, wherein the adjustment instruction comprises:
adjusting instructions for adjusting the operating frequency; and/or the presence of a gas in the gas,
and adjusting the adjustment instruction of the charging voltage.
13. A terminal, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: when the executable instructions are executed, the wireless charging method of any one of claims 7-12 is realized.
14. A computer-readable storage medium storing an executable program, wherein the executable program when executed by a processor implements the wireless charging method of any one of claims 7-12.
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| WO2018072209A1 (en) * | 2016-10-21 | 2018-04-26 | 北京小米移动软件有限公司 | Charging method and electronic device |
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| CN107508340B (en) * | 2017-08-11 | 2019-05-17 | 维沃移动通信有限公司 | A kind of wireless charging control method and wireless charging device |
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