CN113258627A

CN113258627A - Reverse charging method, device, terminal and storage medium

Info

Publication number: CN113258627A
Application number: CN202010089149.7A
Authority: CN
Inventors: 王彦腾; 孙长宇; 吴鹏飞
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2021-08-13

Abstract

The disclosure relates to a reverse charging method, a device, a terminal and a storage medium, wherein the method comprises the following steps: if the terminal is in a reverse charging mode, determining whether an opposite terminal in a preset range of the terminal is an opposite terminal capable of causing abnormal charging; and if the opposite terminal is the opposite terminal capable of causing abnormal charging, closing the reverse charging mode. Therefore, when the opposite terminal in the preset range of the terminal, namely the opposite terminal reversely charged by the terminal is determined to be the opposite terminal capable of causing abnormal charging, the reverse charging mode can be closed in time, so that the charging system cannot be damaged due to abnormal charging, for example, a sending chip and the like are damaged, and the reverse charging safety of the terminal is further ensured.

Description

Reverse charging method, device, terminal and storage medium

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to a reverse charging method and apparatus, a terminal, and a storage medium.

Background

With the development of terminal charging technology, more and more terminals can be charged, and also can be reversely charged, wherein the reverse charging refers to that the terminals charge other terminal devices. In the related art, the protection measures for the reverse charging are limited, such as only low power protection or outdated protection, and the protection measures cannot achieve the purpose of better protecting the terminal, so that how to effectively protect the battery performance of the terminal in the reverse charging process and ensure the safety and effectiveness in the reverse charging process become urgent problems to be solved.

Disclosure of Invention

The disclosure provides a directional charging method, a directional charging device, a terminal and a storage medium, and the technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, there is provided a reverse charging method applied to a terminal, including:

if the terminal is in a reverse charging mode, determining whether an opposite terminal in a preset range of the terminal is an opposite terminal capable of causing abnormal charging;

and if the opposite terminal is the opposite terminal capable of causing abnormal charging, closing the reverse charging mode.

Optionally, if the terminal is in the reverse charging mode, determining whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging includes:

if the terminal is in the reverse charging mode, detecting a reverse charging parameter currently provided by the terminal after the opposite end feeds back;

and determining whether the opposite terminal is an opposite terminal capable of causing abnormal charging or not based on a comparison result of the reverse parameter and a reference parameter, wherein the reference parameter is determined based on a transmission parameter transmitted at the beginning of reverse charging.

Optionally, the transmission parameters include: activating a first working frequency of a signal, wherein the activation signal can be used for activating the opposite terminal within the preset range of the terminal, so that the opposite terminal enters a charging state; the reference parameters include: a first current threshold determined based on the first operating frequency;

the detecting of the reverse charging parameter currently provided by the terminal after the feedback of the opposite terminal includes:

detecting a first reverse current currently provided by the terminal after the opposite end feeds back;

the determining whether the opposite terminal is an opposite terminal capable of causing abnormal chargeable charging based on the comparison result of the reverse charging parameter and the reference parameter includes:

and if the first reverse current is larger than the first current threshold, determining that the opposite end is a first opposite end capable of causing abnormal charging.

Optionally, if the first reverse current is greater than the first current threshold, determining that the opposite end is a first opposite end capable of causing abnormal charging, further includes:

if the first reverse current is greater than the first current threshold, transmitting the activation signal at a second operating frequency, wherein the second operating frequency is less than the first operating frequency;

detecting a second reverse current currently provided by the terminal after the opposite end feeds back;

and if the second reverse current is larger than a second current threshold, determining that the opposite end is a first opposite end capable of causing abnormal charging, wherein the second current threshold is larger than the first current threshold.

Optionally, the transmission parameters include: an emission voltage; the reference parameters include: the emission voltage;

detecting the reverse voltage currently provided by the terminal after the opposite end feeds back;

the determining whether the opposite terminal is an opposite terminal capable of causing abnormal charging based on the comparison result of the reverse charging parameter and the reference parameter includes:

and if the reverse voltage is greater than the transmitting voltage, determining the opposite terminal as a second opposite terminal capable of causing abnormal charging.

Optionally, the method further comprises:

determining whether the terminal meets the condition of entering the reverse charging mode within a first preset time;

if the condition that the terminal meets the condition of entering the reverse charging mode is not determined within the first preset time, stopping supplying power for reverse charging;

and if the terminal is determined to meet the condition of entering the reverse charging mode within the first preset time, determining that the terminal enters the reverse charging mode.

Optionally, if it is determined within the first preset time that the terminal meets the condition of entering the reverse charging mode,

if the terminal is in the reverse charging mode, determining whether the opposite terminal in the preset range of the terminal is the opposite terminal capable of causing abnormal charging, further comprising:

when the terminal is in the reverse charging mode, determining whether the access of the opposite terminal in a preset range of the terminal can be detected within the second preset time;

and if the opposite terminal is accessed, determining whether the opposite terminal in the preset range of the terminal is the opposite terminal capable of causing abnormal charging.

Optionally, the method further comprises:

and if the opposite terminal is not accessed, stopping supplying power for reverse charging.

Optionally, the method further comprises at least one of:

if the control for the reverse charging on the display interface of the terminal is detected to be in an open state, determining that the condition for entering the reverse charging mode is met;

determining that the condition for entering the reverse charging mode is met if the electric quantity of the terminal is detected to be larger than or equal to an electric quantity threshold value;

and determining that the condition for entering the reverse charging mode is met if the electric quantity of the terminal is detected to be greater than or equal to the electric quantity threshold value and the terminal is not in a charging state.

According to a second aspect of the embodiments of the present disclosure, there is provided a reverse charging apparatus applied to a terminal, including:

the first determining module is configured to determine whether an opposite terminal in a preset range of the terminal is an opposite terminal capable of causing abnormal charging or not if the terminal is in a reverse charging mode;

a first closing module configured to close the reverse charging mode if the opposite terminal is an opposite terminal capable of causing abnormal charging.

Optionally, the first determining module further includes:

the detection submodule is configured to detect a reverse charging parameter currently provided by the terminal after the opposite terminal feeds back the reverse charging parameter if the terminal is in the reverse charging mode;

a determining submodule configured to determine whether the opposite terminal is an opposite terminal capable of causing abnormal charging based on a comparison result of the reverse charging parameter and a reference parameter, wherein the reference parameter is determined based on a transmission parameter transmitted at the start of reverse charging.

the detection submodule is further configured to detect a first reverse current currently provided by the terminal after the opposite end is fed back;

the determining submodule is further configured to determine the opposite end as a first opposite end capable of causing abnormal charging if the first reverse current is greater than the first current threshold.

Optionally, the determining sub-module is further configured to:

the detection submodule is also configured to detect a reverse voltage currently provided by the terminal after the opposite end feeds back;

the determining submodule is further configured to determine that the opposite end is a second opposite end capable of causing abnormal charging if the reverse voltage is greater than the transmission voltage.

Optionally, the apparatus further comprises:

a second determination module configured to determine whether the terminal is determined to satisfy a condition for entering the reverse charging mode within a first preset time;

the second closing module is configured to stop supplying power for reverse charging if the terminal is not determined to meet the condition of entering the reverse charging mode within the first preset time;

a third determining module configured to determine that the terminal enters the reverse charging mode if it is determined that the terminal meets the condition for entering the reverse charging mode within the first preset time.

Optionally, if it is determined within the first preset time that the terminal meets the condition of entering the reverse charging mode, the first determining module is further configured to:

Optionally, the apparatus further comprises:

and the third closing module is configured to stop supplying power for reverse charging if the opposite terminal is not accessed.

Optionally, the apparatus further comprises: a fourth determination module; the fourth determination module is configured to at least one of:

and determining that the condition for entering the reverse charging mode is met if the electric quantity of the terminal is detected to be greater than or equal to the electric quantity threshold value and the terminal is not in the charging state.

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 executed, implement the steps of any of the above-described reverse charging methods.

According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon a computer program for execution by a processor of the steps of any of the above-described reverse charging methods.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the disclosure, when the terminal is in a reverse charging mode, whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging is determined; and if the opposite terminal is the opposite terminal capable of causing abnormal charging, closing the reverse charging mode. Therefore, the opposite terminal in the terminal preset range is detected, the reverse charging mode can be timely closed when the opposite terminal is the opposite terminal capable of causing abnormal charging, and therefore the charging system cannot be damaged due to abnormal charging, for example, a sending chip is damaged, and the reverse charging safety of the terminal is guaranteed. Compared with the prior art that the protection measures for reverse charging only stay in low-power protection or outdated protection, the embodiment can also detect the opposite terminal of the terminal, and under the condition that the opposite terminal is the opposite terminal capable of causing abnormal charging, the charging protection in the reverse charging process is realized by automatically closing the reverse charging mode, so that the terminal is safer and more effective in the reverse charging process.

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 flow chart illustrating a reverse charging method according to an exemplary embodiment;

FIG. 2 is a circuit schematic of a reverse charging circuit shown in accordance with an exemplary embodiment;

FIG. 3 is another flow chart illustrating a reverse charging method in accordance with an exemplary embodiment;

FIG. 4 is a user interface schematic diagram illustrating a reverse charging method in accordance with an exemplary embodiment;

FIG. 5 is another user interface schematic diagram illustrating a reverse charging method in accordance with an exemplary embodiment;

FIG. 6 is a block diagram illustrating a reverse charging apparatus in accordance with an exemplary embodiment;

fig. 7 is a block diagram illustrating a terminal 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.

Fig. 1 is a flowchart illustrating a reverse charging method according to an exemplary embodiment, which is applied to a terminal, as shown in fig. 1, and includes the following steps:

step 101: and if the terminal is in the reverse charging mode, determining whether the opposite terminal in the preset range of the terminal is the opposite terminal capable of causing abnormal charging.

Step 102: and if the opposite terminal is the opposite terminal capable of causing abnormal charging, closing the reverse charging mode.

Here, the terminal may be a mobile terminal or a fixed terminal. The mobile terminal can be a mobile phone, a tablet computer, a notebook computer or wearable equipment and other terminal equipment with energy consumption requirements. The mobile terminal may also include an electric household device, such as an intelligent electric toothbrush or shaver, etc. The fixed terminal can be a desktop computer or an intelligent television and the like. The method can be applied to virtually any terminal device that can be reverse charged.

Here, the reverse charging may include one of wireless charging, where the wireless reverse charging is to provide the electric energy of the mobile terminal, which has energy consumption, to other terminal devices by means of wireless charging. For example, the handset itself may display the energy consumed and/or the energy consumed by a call.

Here, the preset range refers to a radiation range of the electromagnetic wave emitted by the wireless coil, that is, within the radiation range, the opposite terminal can receive the electromagnetic wave emitted by the wireless coil and charge the opposite terminal.

Generally, the larger the initial power of the electromagnetic wave, the wider the radiation range.

It should be understood that referring to fig. 2, fig. 2 is a schematic circuit diagram of a reverse charging circuit according to an exemplary embodiment, and as shown in fig. 2, the reverse charging circuit mainly includes: a rectifier bridge, an LDO (low dropout regulator), a receiving coil Ls, and a resonant capacitor Cs. During wireless charging, the rectifier bridge is used for converting an alternating current signal into a direct current signal; when the wireless reverse charging is carried out, the rectifier bridge is used for converting the direct current signal into an alternating current signal. Here, Vout is the supply input, i.e. the voltage input for reverse charging, LDO is used for output voltage regulation, and the receiving coil Ls is used for receiving or transmitting an ac signal.

In practical applications, the rectifier bridge, the receiving coil Ls and the resonant capacitor may be referred to as an output terminal of the reverse charging circuit, and the LDO, the inductor FB and the power supply portion may be referred to as a power supply terminal of the reverse charging circuit. The power supply end provides reversely charged electric signals for the output end, and the output end provides reversely charged electric signals for the opposite end based on the electric signals provided by the power supply end.

Therefore, when the terminal is in the reverse charging mode, when an opposite terminal approaches the terminal, the receiving coil Ls can emit electromagnetic waves to charge the opposite terminal.

It should be noted that, when the opposite end is an opposite end capable of causing abnormal charging, for example, the opposite end is a metal plate, because the metal plate has strong conductivity and small load, the presence of the metal plate may cause the current of the receiving coil Ls to become large, which may cause the battery of the terminal to be burned out, or cause system shutdown, etc. For another example, if the opposite terminal is a charging transmitting terminal of another device, the electric signal of the transmitting terminal is superimposed with the electric signal transmitted by the receiving coil of the terminal, so that the power supply voltage of the terminal becomes high, and the superimposed high voltage also easily causes damage to the battery of the terminal or corresponding voltage or current surge.

Therefore, in this embodiment, when the terminal is in the reverse charging mode, whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging is determined; if the opposite terminal is the opposite terminal capable of causing abnormal charging, the reverse charging mode is closed in time so as to avoid reverse charging, thereby protecting the battery of the terminal from being damaged due to abnormal charging and ensuring the battery performance of the terminal. Compared with the prior art that the protection measures for reverse charging only stay in low-voltage protection or outdated protection, the embodiment also introduces the detection measures for the opposite terminal causing abnormal charging so as to protect the charging safety of the terminal under the condition that the opposite terminal capable of being abnormally charged is accessed, and therefore the reverse charging of the terminal is safer and more effective.

Of course, in order to reduce the influence on the battery under abnormal charging, in some embodiments, the performance of the battery may also be protected by directly turning off the power supply.

In some embodiments, please refer to fig. 3, fig. 3 is another flowchart illustrating a reverse charging method according to an exemplary embodiment, and as shown in fig. 3, the step 101 of determining whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging if the terminal is in a reverse charging mode includes:

step 1011: if the terminal is in the reverse charging mode, detecting a reverse charging parameter currently provided by the opposite-end feedback terminal;

step 1012: and determining whether the opposite terminal is an opposite terminal capable of causing abnormal charging or not based on a comparison result of the reverse charging parameter and a reference parameter, wherein the reference parameter is determined based on a transmission parameter transmitted at the beginning of reverse charging.

It is understood that the transmission parameter refers to a parameter such as current, voltage, power or operating frequency outputted by the terminal when the reverse charging is started, so that the terminal can perform charging based on the parameters. The transmission parameter may be a power supply parameter provided by the power supply terminal of the reverse charging circuit to the output terminal, for example, a power supply voltage provided by the power supply terminal of the reverse charging circuit for reverse charging; it may also be a power supply parameter provided by the power supply terminal of the reverse charging circuit to the output terminal of the reverse charging circuit and output to the outside via a specific load (such as the rectifier bridge and the LDO) of the reverse charging circuit, for example, the power supply terminal of the reverse charging circuit outputs to the outside via the rectifier bridge and the LDO based on the frequency of the alternating current or the signal frequency, etc. of the power supply current provided for the reverse charging.

Here, the transmission parameters may include: parameters of the transmitted electrical signal, such as the frequency of the transmitted electromagnetic wave, the transmitted current, the transmitted voltage or the transmitted power, etc.

Here, the reverse charging parameters may include: when the opposite terminal receives the transmission parameters transmitted when the terminal starts to reversely charge, a feedback signal is generated in the reverse charging circuit of the terminal, and feedback parameters such as feedback voltage and the like brought by the feedback signal are superposed on the output end of the reverse charging circuit, so that current or voltage and the like which can be output externally at present are generated by the output end.

Here, the reference parameter is determined based on a transmission parameter transmitted at the start of reverse charging. It is understood that, when the opposite terminal is a normally chargeable receiving device, the output terminal of the reverse charging circuit provides a normal reverse charging voltage or a reverse charging current for the opposite terminal, which are determined based on the transmitting voltage or the transmitting current provided by the reverse charging start power supply terminal for the output terminal.

Thus, the reference parameter herein may be set based on the transmission parameter. Therefore, whether the opposite terminal is the opposite terminal capable of causing abnormal charging can be determined according to the comparison result of the current reverse charging parameter and the reference parameter. That is to say, according to the comparison result between the charging parameter and the reference parameter, it can be determined whether the charging is abnormal charging, that is, it can be determined whether the opposite terminal is an opposite terminal capable of causing abnormal charging.

In this embodiment, by detecting a comparison result between the reverse charging parameter currently provided by the peer feedback terminal and the reference parameter, it can be quickly determined whether the peer is a peer capable of causing abnormal charging, so that when the peer is determined to be a peer capable of causing abnormal charging, a protection measure can be quickly taken, that is, the reverse charging mode is closed, so as to stop the reverse charging under an abnormal condition, thereby reducing a phenomenon that a battery at the terminal is damaged due to abnormal charging, and further making the reverse charging at the terminal safer and more effective.

Specifically, in some embodiments, the transmission parameters include: activating a first working frequency of a signal, wherein the activation signal can be used for activating the opposite terminal within the preset range of the terminal, so that the opposite terminal enters a charging state; the reference parameters include: a first current threshold determined based on the first operating frequency;

It should be noted that, when the terminal is in the reverse charging mode, the terminal first sends an activation signal to activate the opposite terminal, so that the opposite terminal enters the charging state and then sends a continuous electrical signal for charging the opposite terminal to the opposite terminal. Specifically, when the terminal is in the reverse charging mode, the digital ping signal starts to be transmitted. It will be appreciated that during the active phase it may be used to check whether a potential power receiver, i.e. the peer, or the power receiver, requires power transfer. Therefore, the power receiver may perform the power transmission operation if it can respond by load modulation at this stage, i.e., the peer provides the peer with continuous charging power if it can respond by load modulation at this stage.

Here, when the terminal is in the reverse charging mode, the activation signal is transmitted at the first operating frequency, but when an opposite terminal capable of causing abnormal charging is encountered, for example, when a metal plate is encountered, because a load of the metal plate is small, a current on the input terminal is abnormally large after being fed back to the output terminal of the reverse charging circuit, that is, a current flowing through the receiving coil is abnormally large due to the influence of the metal plate, at this time, if it is detected that a first reverse current currently provided by the terminal after the opposite terminal is fed back is larger than a first current threshold value, it may be determined that the opposite terminal is a first opposite terminal capable of causing abnormal charging.

Here, the first current threshold may be set by a magnitude of the first operating frequency. Here, it should be noted that, as the frequency of the alternating current is lower, the generated energy is larger, that is, the current per unit time is larger. Thus, the higher the first operating frequency, the lower the set first current threshold, and the lower the first operating frequency, the higher the set first current threshold.

Therefore, whether the opposite end is the first opposite end capable of causing abnormal charging or not can be rapidly identified through current judgment in the activation stage, for example, a metal plate and the like, so that the safety of the terminal in the reverse charging process is effectively protected.

In order to reduce the misjudgment phenomenon that the opposite end is determined as the first opposite end capable of causing the abnormal charging, in some embodiments, if the first reverse current is greater than the first current threshold, the determining that the opposite end is the first opposite end capable of causing the abnormal charging further includes:

if the second reverse current is larger than the second current threshold, determining that the opposite end is a first opposite end capable of causing abnormal charging, wherein the second current threshold is larger than the first current threshold.

Here, when the first reverse current is greater than the first current threshold, the operating frequency of the activation signal is lowered, that is, the activation signal is transmitted at the second operating frequency, so as to determine whether the second reverse current obtained after passing through the opposite terminal is still abnormally large and exceeds the second current threshold which is larger than the first current threshold, and if so, it can be further determined that the opposite terminal is a first opposite terminal capable of causing abnormal charging, such as a metal plate.

In this embodiment, whether the opposite end is the first type opposite end capable of causing abnormal charging is verified by reducing the operating frequency of the activation signal and detecting whether the second reverse current is greater than the second current threshold, so that the judgment on whether the opposite end is the first type opposite end capable of causing abnormal charging is more accurate.

Specifically, in other embodiments, the transmission parameters include: an emission voltage; the reference parameters include: the emission voltage;

Here, referring to fig. 2, when the terminal is in the reverse charging mode, the terminal outputs a voltage to the output terminal with the emission voltage Vout, so as to supply power from the output terminal to the opposite terminal, but when the opposite terminal is encountered, for example, the emission terminal of another device, which can cause abnormal charging, the emission terminal of the other device also provides a charging voltage to the terminal, so that the voltage emitted by the emission terminal is superimposed on the output terminal of the terminal, resulting in a Vrect voltage higher than the Vout voltage. Therefore, when it is detected that the reverse voltage currently provided by the terminal after the feedback of the opposite terminal is greater than the transmission voltage, it may be determined that the opposite terminal is a second type of opposite terminal capable of causing abnormal charging, for example, a transmission terminal of other devices. Conversely, if the Vrect voltage is lower than the Vout voltage, it indicates that the opposite terminal is a normal receiving terminal.

Therefore, whether the opposite end is a second opposite end which can cause abnormal charging or not can be quickly identified through the judgment of the voltage, for example, the receiving end of other equipment and the like, so that the safety of the terminal in the reverse charging process is effectively protected.

In some embodiments, the method further comprises: and if the opposite terminal is the opposite terminal capable of causing abnormal charging, outputting prompt information of the abnormal charging.

Here, the prompt message of the abnormal charging may be a text prompt message displayed on a display interface of the terminal; or voice prompt information; the present invention may be a prompt message for a dynamic picture of charging abnormality.

Taking the prompt information as the text prompt information displayed on the display interface of the terminal as an example, please refer to fig. 4, where fig. 4 is a schematic view of a user interface of a reverse charging method according to an exemplary embodiment, as shown in fig. 4, when the opposite end is an opposite end capable of causing abnormal charging, such as a metal plate, a prompt box pops up in the display interface of the terminal, and text prompt information of "metal foreign matter is on the surface of the coil" is displayed. Of course, the content of the prompt message may also be other content, for example, an opposite end exception, or a reverse charging exception, etc., and is not limited herein, as long as the user can be prompted about the reverse charging exception at this time.

In this embodiment, the user can timely know the abnormal charging condition and the reason causing the abnormal charging by outputting the prompt message of the abnormal charging, and timely take corresponding measures.

Of course, in other embodiments, the method further comprises: if the opposite terminal is the opposite terminal capable of causing abnormal charging, the control of the reverse charging is placed in a closed state, and the control of the reverse charging is shielded, so that the user operation aiming at the control of the reverse charging cannot be received when abnormal charged equipment exists.

Specifically, referring to fig. 5, fig. 5 is another schematic user interface diagram of a reverse charging method according to an exemplary embodiment, and as shown in fig. 5, when the opposite end is an opposite end capable of causing abnormal charging, such as a transmitting end of a metal plate or other equipment, the control of the reverse charging is placed in a closed state, and the control of the reverse charging is shielded so that the control of the reverse charging cannot be turned on by a user. Here, the terminal may control the reverse charging control to become gray.

In the embodiment, the battery performance of the terminal is effectively protected under the condition of abnormal charging by automatically controlling the on-off of the control for reverse charging and the operation authority.

In some embodiments, the method further comprises:

if the terminal is not determined to meet the condition of entering the reverse charging mode within the first preset time, stopping supplying power for reverse charging;

Here, stopping supplying power to the reverse charging means stopping supplying power to the output terminal of the reverse charging with respect to the power supply terminal of the reverse charging circuit at the time of the reverse charging. It should be noted that in some embodiments, the power supply of the terminal may still provide power for the terminal under other conditions after the power supply of the terminal stops supplying power for the reverse charging.

When the processor of the terminal causes the reverse charging circuit to enter the reverse charging mode through the communication bus, it is first determined whether the terminal can satisfy the condition of entering the reverse charging mode within a first preset time, where the first preset time may be, for example, 10s or 8 s. The first preset time may be set according to the processing performance of the terminal, and the time may be set to be shorter as the processing performance is better, and the time may be set to be longer as the processing performance is worse. Here, if it is determined that the terminal satisfies the condition for entering the reverse charging mode, the reverse charging circuit of the terminal gives a corresponding feedback, such as an operation state before interruption, and the like. If no interruption of the reverse charging circuit is detected within the first preset time, it may be determined that the terminal does not satisfy the condition for entering the reverse charging mode. Please refer to fig. 5 again, at this time, the control for the reverse charging on the display interface of the terminal is gray.

In other embodiments, the method further comprises: and when the condition that the terminal meets the condition of entering the reverse charging mode is not determined within the first preset time, displaying related prompt information of 'abnormal reverse charging opening and incapability of starting reverse charging' on a display interface of the terminal. Of course, in other embodiments, the user may also be prompted by a voice prompt that the reverse charging mode cannot be performed.

In this embodiment, by introducing a time mechanism for determining whether the condition for entering the reverse charging mode is satisfied, that is, introducing a time determination mechanism in a preparation stage before the reverse charging mode enters, if it cannot be determined that the terminal satisfies the condition for entering the reverse charging mode within the first preset time, the power supply for the reverse charging is stopped to save the energy consumption of the terminal. Compared with the conventional general obsolete protection mechanism for reverse charging in the prior art, for example, after the terminal is turned on for wireless reverse charging, if there is no valid receiving device for a period of time, that is, the access of the opposite terminal is performed, for example, 90 seconds, the terminal can automatically turn off the power supply, the time mechanism of this embodiment can perform segment protection, and the time mechanism is separately set at the preparation stage of reverse charging, that is, at the stage of determining whether the condition for entering the reverse charging mode is satisfied, so that the energy consumption of the terminal can be better saved, and in combination with the determination of whether the opposite terminal is a charging terminal capable of causing abnormal charging in the above embodiment, the battery damage phenomenon caused by abnormal charging in the obsolete protection process can be reduced.

In some embodiments, the method further comprises at least one of:

Here, the charge threshold refers to the lowest charge value at which the terminal can provide reverse charging. In some embodiments, the charge threshold may be a fixed preset charge value, for example, a corresponding charge value when the charge is 20%.

In other embodiments, the power threshold may be dynamically set according to the battery performance of the terminal. It is understood that the power threshold may be set smaller as the battery performance of the terminal is better, and may be set larger as the battery performance of the terminal is worse. It can be understood that the battery performance of the terminal is in inverse proportional relation to the battery usage time of the terminal, i.e. the longer the battery usage time of the terminal is, the worse the battery performance is; the shorter the battery life of the terminal, the better the battery performance.

Therefore, the processor of the terminal judges whether the condition for entering the reverse charging mode is met before the terminal enters the reverse charging mode, and allows the terminal to enter the reverse charging mode only under the condition that the condition for entering the reverse charging mode is met. In this embodiment, by introducing a first preset time and determining whether the condition for entering the reverse charging mode can be met within the first preset time, if the condition for entering the reverse charging mode cannot be met within the first preset time, the power supply for reverse charging is stopped in time, so as to save the energy consumption of the terminal.

Further, if it is determined within the first preset time that the terminal meets the condition of entering the reverse charging mode, it is determined that the terminal enters the reverse charging mode, and at this time, the terminal can be in the reverse charging mode, that is, reverse charging can be performed.

In some embodiments, if it is determined that the terminal satisfies the condition of entering the reverse charging mode within the first preset time, and if the terminal is in the reverse charging mode, determining whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging, further includes:

Here, the second preset time may be, for example, 60 s. The second preset time may be set according to a user's historical experience.

Here, if it is determined that the terminal satisfies the condition of entering the reverse charging mode within the first preset time, another time mechanism is used, that is, a second preset time is introduced, and only when the access of the opposite terminal is detected within the second preset time, it is required to determine whether the opposite terminal within the preset range of the terminal is the opposite terminal capable of causing abnormal charging.

Further, in some embodiments, the method further comprises: and if the opposite terminal is not accessed, stopping supplying power for reverse charging.

Therefore, if the access of the opposite terminal in the preset range of the terminal is not determined within the second preset time, the judgment of whether the opposite terminal is the opposite terminal capable of causing abnormal charging is not required at all, and the energy consumption of the terminal is saved by stopping supplying power for reverse charging.

In this embodiment, a time mechanism is further added, that is, two time mechanisms, that is, a first preset time and a second preset time are adopted, if it is determined that the terminal meets the condition of entering the reverse charging mode within the first preset time, a mode of accessing the opposite terminal within a preset range of the terminal is further determined whether the terminal can be detected within the second preset time, and if no terminal is accessed, the reverse charging power supply is stopped to save energy consumption for the terminal.

It is necessary to supplement that, during the reverse charging process of the terminal, the safety during the reverse charging process can be ensured by adding protection mechanisms such as overvoltage protection, undervoltage protection or over-temperature protection, and the safety performance of the terminal during the reverse charging process can be improved.

Additionally, the method further comprises at least one of:

when the battery electric quantity of the terminal is detected to be lower than the electric quantity threshold value, the reverse charging mode is exited;

when detecting that a control for reverse charging on a display interface of the terminal is in a closed state, exiting the reverse charging mode;

when the opposite terminal is detected not to be in the preset range of the terminal and the opposite terminal is not detected to be accessed in the preset range within second preset time, the reverse charging mode is exited;

and when the opposite terminal is detected to be the opposite terminal capable of causing abnormal charging, such as a transmitting terminal of other equipment or a metal plate, exiting the reverse charging mode.

Further, the present disclosure provides a specific embodiment to further understand the reverse charging method provided by the embodiment of the present disclosure.

In the related art, with the efforts of wireless charging technology manufacturers and coil manufacturers, more and more intelligent devices, including wearable devices and mobile intelligent terminals, start to apply wireless charging technology. At present, wireless charging scenes of mobile terminals are more and more, and many mobile phones support a wireless reverse charging technology, such as mainstream manufacturers of samsung, millet, huashi and apple. The application scene of wireless anti-charging is more and more extensive, for example use the cell-phone to open wireless anti-charging function, can carry out wireless charging for smart machine such as wrist-watch, bracelet, TWS earphone, razor, electric toothbrush etc.. But if wireless reverse charging, the battery of the terminal providing the reverse charging is very damaged if it is improperly used and protected.

Here, the reverse charging is wireless reverse charging, and the terminal is a mobile phone.

On the basis of the existing wireless reverse charging working mechanism and protection mechanism, the embodiment also provides a detection mechanism, a voltage drop detection mechanism and a T1+ T2 mechanism in the activation stage, so that the mobile phone can be placed on a metal plate or on the transmitting end of other equipment when the mobile phone is wirelessly reversely charged, the scenes can be detected and protected, and the wireless reverse charging is safer and more effective.

Wherein, the detection mechanism of the activation phase is as follows: when the mobile phone works in the wireless reverse charging mode, starting to use f_op1Sending a digital ping signal, starting the mobile phone to detect the current in the coil, when a metal plate is placed on a receiving coil of the mobile phone, the current flowing through the receiving coil becomes abnormally large, and at the moment, the current passes through two set current thresholds, namely a first current threshold I_{ping_ocp1}And a second current threshold I_{ping_ocp2}(I_{ping_ocp1}Is less than I_{ping_ocp2}). When the current on the receiving coil is detected to be larger than I_{ping_ocp1}In order to ensure the accuracy of detection, the method further uses f_op2Transmitting a digital ping signal for the operating frequency, wherein f_op2Is less than f_op1Continuously detecting the current of the receiving coil if the current of the receiving coil is larger than I_{ping_ocp2}And the mobile phone stops sending ping signals and displays prompt information on a display interface of the mobile phone, wherein the content of the prompt information can be 'metal foreign matters exist on the surface of the coil'.

It is understood that f herein_op1The first operating frequency described for the above embodiment; where f is_op2A second operating frequency as described in the previous embodiment; here with f_op1Sending a digital ping signal, wherein the current on the receiving coil detected when the mobile phone starts to detect the current in the detecting coil is the first reverse current in the embodiment; here with f_op2Transmitting a digital ping signal for the working frequency, wherein the detected current on the receiving coil when detecting the current of the receiving coil is the second reverse current described in the above embodiment; herein I_{ping_ocp1}The first current threshold described for the above embodiment; herein I_{ping_ocp2}The second current threshold described in the above embodiments.

In this embodiment, through the detection mechanism in the activation phase, that is, the current detection in the ping phase, whether the metal plate is connected to the receiving coil of the mobile phone can be quickly identified, so that the safety of the mobile phone in the reverse charging process is effectively protected.

Wherein, the pressure drop detection mechanism is as follows: the voltage at the two ends of the LDO is detected, namely the voltage of the power supply end and the voltage of the output end in the reverse charging circuit are detected, so that the condition that the mobile phone is placed at a wireless transmitting end in a wireless reverse charging mode is judged. When the mobile phone works in wireless reverse charging, if Vrect is greater than Vout, the emitting end is judged to be available, the reason is as follows: when the mobile phone is wirelessly charged reversely, Vout is a power supply voltage, and Vrect voltage is lower than Vout voltage under a normal condition; when a wireless transmitting end exists, a ping signal of the wireless transmitting end is superposed on a receiving coil of the mobile phone, so that the Vrect voltage is higher than the Vout voltage.

Here, Vout is the emission voltage described in the above embodiment; here, Vrect is the reverse voltage described in the above embodiment.

In the embodiment, through voltage detection, whether the receiving coil of the mobile phone is connected with the transmitting end of other equipment or not can be quickly identified, so that the safety of the mobile phone in the reverse charging process is effectively protected.

The T1+ T2 mechanism is a modification of an existing time mechanism into two time mechanisms.

The T1 mechanism is used to determine whether the mobile phone correctly enters the reverse charging mode. Such as: when the mobile phone processor enables the mobile phone to enter a reverse charging mode through the I2C, the t1 is started firstly, for example, a time mechanism of 10s is set, if no interruption is detected within 10s, that is, under the condition that the mobile phone meets the condition of entering the reverse charging mode is not detected, a user is prompted to 'reverse charging is turned on abnormally, wireless reverse charging cannot be started' through a display interface of a terminal, a power supply source of reverse charging is controlled to be turned off, power supply is stopped, and a wireless reverse charging switch is controlled to be grayed.

The T2 mechanism is mainly used for the situation that no wireless charging device is put in the wireless charging device in the time T2. And after t2, the mobile phone processor turns off the power supply for reverse charging, stops supplying power, controls the wireless reverse charging switch to turn grey, and prompts a user to 'reverse charging connection is overtime, and the wireless reverse charging is turned off' through a display interface of the terminal. And if the receiving equipment is put in the terminal within t2 time, starting wireless reverse charging, and giving a wireless reverse charging prompt or related charging animation display through a display interface of the terminal.

Here, t1 is the first preset time in the above embodiment, and t2 is the second preset time in the above embodiment.

In the embodiment, through two time mechanisms, the energy consumption of the mobile phone can be better saved, and unnecessary electric energy waste is reduced.

Certainly, when the wireless reverse charging operation is performed, various existing protection mechanisms, such as an overvoltage protection mechanism, an undervoltage protection mechanism, an over-temperature protection mechanism, and the like, are also turned on, and when the related protection mechanisms detect abnormality, the user is prompted through a display interface of the terminal to "the wireless reverse charging function is abnormal, the wireless reverse charging function is turned off", and the power supply for reverse charging is controlled to be turned off.

The reverse charging method provided by the embodiment can ensure that the reverse charging method is safer and more effective in various scenes.

Fig. 6 is a block diagram illustrating a reverse charging apparatus according to an exemplary embodiment. Referring to fig. 6, the apparatus includes: a first determination module 61 and a first closing module 62;

the first determining module 61 is configured to determine whether an opposite terminal within a preset range of the terminal is an opposite terminal capable of causing abnormal charging if the terminal is in a reverse charging mode;

the first closing module 62 is configured to close the reverse charging mode if the opposite terminal is an opposite terminal capable of causing abnormal charging.

In some optional embodiments, the first determining module 61 further includes:

In some optional embodiments, the transmission parameters include: activating a first working frequency of a signal, wherein the activation signal can be used for activating the opposite terminal within the preset range of the terminal, so that the opposite terminal enters a charging state; the reference parameters include: a first current threshold determined based on the first operating frequency;

In some optional embodiments, the determination submodule is further configured to:

In some optional embodiments, the transmission parameters include: an emission voltage; the reference parameters include: the emission voltage;

In some optional embodiments, the apparatus further comprises:

In some optional embodiments, if it is determined within the first preset time that the terminal meets the condition of entering the reverse charging mode, the first determining module 61 is further configured to:

In some optional embodiments, the apparatus further comprises:

In some optional embodiments, the apparatus further comprises: a fourth determination module; the fourth determination module is configured to at least one of:

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 7 is a block diagram illustrating a terminal 700 according to an example embodiment. For example, the terminal 700 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. 7, terminal 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.

The processing component 702 generally controls overall operation of the terminal 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 702 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operation at the terminal 700. Examples of such data include instructions for any application or method operating on terminal 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 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.

Power component 706 provides power to the various components of terminal 700. Power components 706 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal 700.

The multimedia component 708 comprises a screen providing an output interface between the terminal 700 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 708 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 700 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 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the terminal 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 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.

The sensor assembly 714 includes one or more sensors for providing various aspects of state assessment for the terminal 700. For example, sensor assembly 714 can detect an open/closed state of terminal 700, relative positioning of components, such as a display and keypad of terminal 700, change in position of terminal 700 or a component of terminal 700, presence or absence of user contact with terminal 700, orientation or acceleration/deceleration of terminal 700, and temperature change of terminal 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the terminal 700 and other devices in question. The terminal 700 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 716 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 616 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 terminal 700 can 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 704 comprising instructions, executable by the processor 720 of the terminal 700 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.

A non-transitory computer-readable storage medium, wherein instructions of the storage medium, when executed by a processor of a terminal, enable the terminal to perform the method for adjusting page display according to the embodiments described above.

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

1. A reverse charging method is applied to a terminal and comprises the following steps:

2. The method of claim 1, wherein the determining whether the peer end within the preset range of the terminal is a peer end capable of causing abnormal charging if the terminal is in the reverse charging mode comprises:

and determining whether the opposite terminal is an opposite terminal capable of causing abnormal charging or not based on a comparison result of the reverse charging parameter and a reference parameter, wherein the reference parameter is determined based on a transmission parameter transmitted at the beginning of reverse charging.

3. The method of claim 2, wherein the transmission parameters comprise: activating a first working frequency of a signal, wherein the activation signal can be used for activating the opposite terminal within the preset range of the terminal, so that the opposite terminal enters a charging state; the reference parameters include: a first current threshold determined based on the first operating frequency;

4. The method of claim 3, wherein determining the opposite end as a first opposite end capable of causing abnormal charging if the first reverse current is greater than the first current threshold further comprises:

5. The method of claim 2, wherein the transmission parameters comprise: an emission voltage; the reference parameters include: the emission voltage;

6. The method of claim 1, further comprising:

if the terminal is not determined to meet the condition of entering the directional charging mode within the first preset time, stopping supplying power for reverse charging;

7. The method of claim 6, wherein if it is determined within the first predetermined time that the terminal satisfies the condition for entering the reverse charging mode,

8. The method of claim 7, further comprising:

9. The method according to any one of claims 6 to 8, further comprising at least one of:

10. A reverse charging device, applied to a terminal, includes:

11. The apparatus of claim 10, wherein the first determining module further comprises:

12. The apparatus of claim 11, wherein the transmission parameters comprise: activating a first working frequency of a signal, wherein the activation signal can be used for activating the opposite terminal within the preset range of the terminal, so that the opposite terminal enters a charging state; the reference parameters include: a first current threshold determined based on the first operating frequency;

13. The apparatus of claim 12, wherein the determination submodule is further configured to:

14. The apparatus of claim 11, wherein the transmission parameters comprise: an emission voltage; the reference parameters include: the emission voltage;

15. The apparatus of claim 10, further comprising:

16. The apparatus of claim 15, wherein if it is determined within the first predetermined time that the terminal satisfies the condition for entering the reverse charging mode, the first determining module is further configured to:

17. The apparatus of claim 16, further comprising:

18. The apparatus of any one of claims 15 to 17, further comprising: a fourth determination module; the fourth determination module is configured to at least one of:

19. A terminal, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: when executed, implement the directional charging method steps of any of claims 1 to 9.

20. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the directional charging method steps of any of claims 1 to 9.