A wireless charging method and device, earphone box and storage medium

Abstract

Embodiments of the present application disclose a wireless charging method and device, an earphone box and a storage medium. The method is applied to an earphone box, and the earphone box comprises a first NFC receiving coil and a second NFC receiving coil. The method comprises the following steps: detecting an earphone containing state of the earphone box; setting a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone containing state; when the working state is a first state, charging an earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil; and when the working state is a second state, charging the earphone box by using the first NFC receiving coil and the second NFC receiving coil. In this way, by setting the NFC receiving coil, the earphone box can be reversely charged by using an electronic device with NFC function, or the earphone can be reversely charged, thereby providing a more convenient charging mode for the wireless earphone and enriching the charging mode of the wireless earphone.

Description

TECHNICAL FIELD

[0001] The present application relates to the wireless charging technical field, especially relates to a wireless charging method, device, earphone box and storage medium. BACKGROUND

[0002] The Bluetooth earphone is a device based on Bluetooth technology to transmit stereo signals, that is, the left and right earphones can work independently without any wire connection by receiving the stereo signals from a mobile phone or other playing devices through Bluetooth, and can be worn on one or two ears. The existing Bluetooth earphone is generally placed in an earphone box for storage and charging, and the charging mode is single. SUMMARY

[0003] The embodiments of the present application provide a wireless charging method, device, earphone box and storage medium, which can flexibly control various working modes of the earphone.

[0004] The technical scheme of the embodiments of the present application is as follows:

[0005] In a first aspect, the embodiments of the present application provide a wireless charging method applied to an earphone box, and characterized in that the earphone box comprises a first near field communication (NFC) receiving coil and a second NFC receiving coil; and the method comprises the following steps:

[0006] detecting an earphone containing state in the earphone box;

[0007] setting a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone containing state;

[0008] when the working state is a first state, charging an earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil;

[0009] when the working state is a second state, charging the earphone box by using the first NFC receiving coil and the second NFC receiving coil.

[0010] In a second aspect, the embodiments of the present application provide a wireless charging device applied to an earphone box, and the earphone box comprises a first near field communication (NFC) receiving coil and a second NFC receiving coil; and the device comprises the following units:

[0011] a detection unit configured to detect an earphone containing state in the earphone box;

[0012] a setting unit configured to set a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone containing state;

[0013] a power management unit, configured to charge the earphone in the earphone case by using the first NFC receiving coil and / or the second NFC receiving coil when the working state is the first state;

[0014] The power management unit is further configured to charge the earphone case by using the first NFC receiving coil and the second NFC receiving coil when the working state is the second state.

[0015] In a third aspect, an earphone case is provided, which includes a first NFC receiving coil and a second NFC receiving coil; the earphone case further includes a processor and a memory configured to store a computer program capable of running on the processor,

[0016] The processor is configured to execute the steps of the method of the first aspect when the computer program is run.

[0017] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is configured to implement the steps of the method of the first aspect when executed by a processor.

[0018] The embodiments of the present application provide a wireless charging method, device, earphone case and storage medium. The method is applied to an earphone case, and the earphone case includes a first NFC receiving coil and a second NFC receiving coil. The method includes the following steps: detecting an earphone containing state of the earphone case; setting a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone containing state; charging the earphone in the earphone case by using the first NFC receiving coil and / or the second NFC receiving coil when the working state is a first state; and charging the earphone case by using the first NFC receiving coil and the second NFC receiving coil when the working state is a second state. In this way, the earphone case can be reversely charged by using an electronic device with NFC function or the earphone can be reversely charged by setting the NFC receiving coil, a more convenient charging method is provided for the wireless earphone, and the charging method of the wireless earphone is enriched. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of a NFC wireless charging framework structure;

[0020] Figure 2 FIG. 2 is a first flowchart of a wireless charging method in the embodiments of the present application;

[0021] Figure 3 FIG. 3 is a first alternative structure schematic diagram of an earphone assembly provided in the embodiments of the present application;

[0022] Figure 4 This is a schematic diagram of a second optional structure of the headphone assembly provided in an embodiment of this application;

[0023] Figure 5 This is a first structural schematic diagram of an earphone case provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the NFC receiving coil in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the second process of the wireless charging method in the embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the second structure of the earphone case provided in an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the composition structure of the wireless charging device provided in the embodiments of this application. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are merely illustrative and not intended to limit the invention. Furthermore, the embodiments provided below are partial embodiments for implementing the present invention, not all embodiments for implementing the present invention. Unless otherwise specified, the technical solutions described in the embodiments of the present invention can be implemented in any combination.

[0029] Before introducing the wireless charging method of this application, let's first introduce NFC wireless charging. NFC charging can be divided into two parts: the transmitter (Poller) and the receiver (Listener), as follows... Figure 1 As shown, the transmitter at the sending end acts as the energy output terminal, transmitting communication data and energy to the receiver via the NFC transmitting coil. The receiver comprises a power management unit and a communication unit. The power management unit is primarily responsible for managing the voltage and current after rectification or external rectification, as well as the battery charging status. The communication unit is mainly responsible for negotiating wireless charging with the transmitter via the NFC coil. The power management unit and the communication unit operate in parallel without mutual communication; both communicate with the MCU via the I2C bus, acting as slave units.

[0030] This application utilizes NFC wireless charging to achieve the charging function of wireless earphones. Since the transmitter can be directly built into the electronic device and is compatible with the NFC of existing electronic devices (i.e., any electronic device with NFC functionality can charge Bluetooth earphones), the coil design is particularly important for the entire NFC wireless charging process. For the transmitter, since electronic devices often have sufficient space, the NFC transmitting coil can be directly placed inside the electronic device. For the receiver, it can be placed directly on the side of the wireless earphones. However, considering the small size of the earphones and the independence of the two earphones, this embodiment places the NFC receiving coil in the earphone case.

[0031] This application provides a wireless charging method applied to an earphone case, the earphone case including a first NFC receiving coil and a second NFC receiving coil.

[0032] Figure 2 This is a schematic diagram of the first process of the wireless charging method in the embodiments of this application, such as... Figure 2 As shown, the method may specifically include:

[0033] Step 101: Detect the earphone holding status inside the earphone case;

[0034] First, we will illustrate the headphone case in the embodiments of this application with an example. Figure 3 This is a schematic diagram of a first optional structure of the headphone assembly provided in an embodiment of this application, as shown below. Figure 3 As shown, the earphone assembly 20 includes earphones 21 and an earphone case 22. Earphones 21 include a first earphone 21-1 (left earphone) and a second earphone 21-2 (right earphone). When the earphones need to be stored in the earphone case 22, the lid of the earphone case 22 is opened, and the earphones 21 are placed into their corresponding positions within the receiving slots. The earphones can also be charged through the earphone case, either via contact charging or wireless charging. Of course, the earphones in this application generally refer to wireless earphones, which can be TWS earphones or a single earphone, such as a single Bluetooth earphone.

[0035] Figure 4 This is a schematic diagram of a second optional structure of the headphone assembly provided in an embodiment of this application, as shown below. Figure 4 As shown, the earphone case 22 also has a receiving slot 221 for accommodating the earphone 21. The wall of the receiving slot 221 has a second connecting part 222 electrically connected to the power module. When the first connecting part 211 of the earphone 21 contacts the second connecting part 222, the power module charges the earphone 21 through the second connecting part 222 and the first connecting part 211. The shape of the receiving slot can correspond to the shape of the earphone, thus allowing the earphone to be correctly embedded into the receiving slot.

[0036] In practical application, whether the earphone is in the accommodating slot can be determined by detecting the connection state of the first connecting part and the second connecting part, and if connected, it is determined that the earphone is placed in the earphone box. When the earphone accommodating state represents that the earphone is placed in the earphone box, if there is only one earphone, it can also specifically represent which earphone is placed in the earphone box.

[0037] In an example, the earphone box 22 includes six outer surfaces, including an upper surface, a lower surface, and four side surfaces. Among them, the upper surface is a curved surface, and the four side surfaces and the lower surface are flat surfaces.

[0038] In practical application, the first NFC receiving coil and the second NFC coil are arranged on the same surface of the earphone box. For example, the two NFC receiving coils can be arranged on Figure 3 Any one of the upper surface, the lower surface, the left side surface, the right side surface, the front side surface, and the rear side surface of the earphone box 22. Considering that the NFC receiving coil needs to occupy enough space, the NFC receiving coil is preferably arranged on the upper surface or the lower surface.

[0039] In the embodiments of the present application, the shape of the earphone box and the number of included outer surfaces are not limited. In an example, the earphone box is a cube including six outer surfaces. In an example, the earphone box is a cylinder including three outer surfaces.

[0040] Optionally, the outer surface of the earphone box includes a flat surface. Optionally, the outer surface of the earphone box includes a flat surface and a curved surface.

[0041] In some embodiments, the step specifically includes: detecting the earphone accommodating state in the earphone box when the charging condition is detected to be met.

[0042] It should be noted that when the earphone box is in a non-charging state, if the earphone is frequently taken out and put into the earphone box by the user, there is no need to adjust the working state of the NFC receiving coil. Only when the earphone box is charged (i.e., when the charging condition is detected to be met), the earphone accommodating state is detected, and the working state is adjusted according to the accommodating state, to avoid invalid state adjustment.

[0043] It's important to note that when using the NFC function of an electronic device to wirelessly charge the headphone case or the earphones inside, due to NFC communication limitations, the distance between the headphone case and the electronic device must be less than the distance threshold specified by NFC communication for them to communicate and achieve wireless charging. Therefore, the charging conditions, used as the criterion for the electronic device to charge the headphone case or earphones, can be defined as follows: the magnetic field strength detected by the NFC receiving coil is greater than a strength threshold, and the duration is greater than a preset duration. The distance between the headphone case and the electronic device is characterized by the ambient magnetic field strength detected by the NFC receiving coil. Alternatively, the charging conditions can also be defined as the distance between the headphone case and the electronic device being less than a distance threshold, and the duration being greater than a preset duration, as detected by the distance sensor.

[0044] Step 102: Based on the earphone housing state, set the working state of the first NFC receiving coil and the second NFC receiving coil;

[0045] Here, the operating state of the NFC receiving coil is used to indicate the relative positional relationship between the first NFC receiving coil and the second NFC receiving coil.

[0046] In some embodiments, the headphone accommodating state indicates that when headphones are placed in the headphone case, the working state is set to a separate state; the headphone accommodating state indicates that when no headphones are placed in the headphone case, the working state is set to a combined state.

[0047] In some embodiments, the first state is a separate state, and the second state is a merged state.

[0048] Figure 5 This is a first structural schematic diagram of the earphone case provided in an embodiment of this application, as shown below. Figure 5 As shown, the first NFC receiving coil ( Figure 5 Left coil) and second NFC receiving coil ( Figure 5 When the right-side coil is in a separate state, it is located at both ends of the front of the earphone case, and the two NFC receiving coils are not connected, each receiving charging signals independently. When in a combined state, it moves to the center of the front of the earphone case, and the first and second NFC receiving coils are connected in series and merged into one NFC receiving coil.

[0049] In some embodiments, the earphone case includes a driver.

[0050] Setting the working state to a discrete state includes: when the working state is a merged state, controlling the driving device to drive the first NFC receiving coil and the second NFC receiving coil to move towards both ends to switch to the discrete state;

[0051] The setting the working state as the combined state comprises: when the working state is the separated state, controlling the driving device to work to drive the first NFC receiving coil and the second NFC receiving coil to move to the center to switch to the combined state.

[0052] For example, the driving device can be a motor, and one motor is arranged for each of the first NFC receiving coil and the second NFC receiving coil, or one motor is shared by the two NFC receiving coils to drive the two NFC receiving coils to move along the set track.

[0053] Step 103: when the working state is the first state, charging the earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil.

[0054] In some embodiments, when the working state is the first state and the charging condition is met, the first NFC receiving coil and / or the second NFC receiving coil are controlled to be in the charging signal receiving state to charge the earphone in the earphone box.

[0055] Specifically, when it is detected that there is only one earphone in the earphone box, one of the first NFC receiving coil and the second NFC receiving coil is controlled to be in the charging signal receiving state, and the other is controlled to be in the charging signal shielding state; or when it is detected that there is only one earphone in the earphone box, the first NFC receiving coil and the second NFC receiving coil are both controlled to be in the charging signal receiving state, one of the NFC receiving coils is used to charge the earphone, and the other NFC receiving coil is used to charge the earphone box; when it is detected that there are two earphones in the earphone box, the first NFC receiving coil and the second NFC receiving coil are both controlled to be in the charging signal receiving state.

[0056] That is, if the first NFC receiving coil is responsible for charging the left earphone and the second NFC receiving coil is responsible for charging the right earphone, when there is only one earphone in the earphone box, the NFC receiving coil corresponding to the earphone is controlled to be in the receiving state, and the other NFC receiving coil is controlled to be in the shielding state. If all the NFC receiving coils are in the receiving state at the same time, there must be an influence between them, so in this case, the other NFC receiving coil needs to be controlled to be in the charging signal shielding state to ensure the charging signal receiving effect of the NFC receiving coil.

[0057] Here, the charging signal receiving state can be understood as connecting the charging coil to the charging circuit to form a closed loop to sense the surrounding magnetic field to obtain the charging signal, and the charging current of the earphone box or the earphone is obtained after the charging signal is converted by the charging circuit. The charging signal shielding state can be understood as disconnecting the charging coil from the charging circuit, and the NFC receiving coil cannot form a closed loop to sense the surrounding magnetic field.

[0058] In some embodiments, when the operating state is a first state and the charging conditions are not met, the first NFC receiving coil or the second NFC receiving coil is controlled to reset to the charging signal receiving state.

[0059] It should be noted that since the NFC receiving coil cannot sense the surrounding magnetic field when it is in a shielded state, the NFC receiving coil needs to be reset to the receiving state when the electronic device leaves, in order to ensure that it can be detected in a timely and accurate manner when the electronic device approaches again.

[0060] In some embodiments, the method further includes: in a first state, when the earphones are detected to have left the earphone case, or when the earphones are detected to have finished charging, switching the first NFC receiving coil and the second NFC receiving coil from the first state to the second state to charge the earphone case.

[0061] In other words, it is preferable to charge the earphones first, and then charge the earphone case when the earphones are fully charged, or to charge the earphone case when taking out the earphones.

[0062] Step 104: When the working state is the second state, the earphone case is charged using the first NFC receiving coil and the second NFC receiving coil.

[0063] In some embodiments, when the working state is the second state and the charging conditions are met, the first NFC receiving coil and the second NFC receiving coil are controlled to be in the charging signal receiving state to charge the earphone case.

[0064] In other words, in the second state, when the charging conditions are met, the first NFC receiving coil and the second NFC receiving coil connected in series are regarded as one NFC receiving coil, which can provide greater charging power to the earphone case and charge the earphone case.

[0065] In some embodiments, each NFC coil may also be provided with a material for focusing magnetic flux to ensure that the Q value of the NFC receiving coil is as high as possible. For example, considering the influence between coils and the internal environment, ferrite is attached to the inside of each NFC receiving coil, which can serve to focus magnetic flux and ensure that the Q values ​​of the two coils are as high as possible, thereby enabling wireless charging on different surfaces of the earphone case.

[0066] Figure 6 This is a schematic diagram of the NFC receiving coil structure in an embodiment of this application, as shown below. Figure 6 As shown, the NFC receiving coil consists of 5 turns, and a ferrite core is attached to the inner side of the NFC receiving coil. Figure 6(Middle shaded area). In practical applications, the number of turns of the NFC receiving coil can be flexibly set according to actual needs. This application embodiment does not impose a specific limitation.

[0067] By adopting the above technical solution, an NFC receiving coil can be set up to allow an electronic device with NFC functionality to reverse charge the headphone case or the headphone itself. When there are headphone headphones in the case, the headphone headphones can be charged directly. When there are no headphone headphones in the case, the case can be charged. When the headphone headphones are placed in the case, the case charges the headphones placed inside. This provides a more convenient charging method for wireless headphones and enriches the charging options for wireless headphones.

[0068] Based on the above embodiments, the wireless charging method will be further illustrated with examples. Figure 7 This is a schematic diagram of the second process of the wireless charging method in the embodiments of this application, as shown below. Figure 7 As shown, the method specifically includes:

[0069] Step 201: When the charging conditions are met, detect the earphone holding status inside the earphone case;

[0070] Step 202: Based on the earphone housing state, set the working state of the first NFC receiving coil and the second NFC receiving coil;

[0071] Step 203: The working state is the first state, which controls the first NFC receiving coil and / or the second NFC receiving coil to be in the charging signal receiving state, so as to charge the earphones in the earphone case;

[0072] Specifically, when only one earphone is detected in the earphone case, one of the first NFC receiving coil and the second NFC receiving coil is controlled to be in charging signal receiving state, and the other is in charging signal shielding state; or, when only one earphone is detected in the earphone case, both the first NFC receiving coil and the second NFC receiving coil are controlled to be in charging signal receiving state, using one NFC receiving coil to charge the earphone and using the other NFC receiving coil to charge the earphone case; or, when two earphones are detected in the earphone case, both the first NFC receiving coil and the second NFC receiving coil are controlled to be in charging signal receiving state.

[0073] That is, if the first NFC receiving coil is responsible for charging the left earphone and the second NFC receiving coil is responsible for charging the right earphone, when there is only one earphone in the earphone box, the control NFC receiving coil corresponding to the earphone is in a receiving state, and the other NFC receiving coil is in a shielding state. If all NFC receiving coils are in a receiving state at the same time, there will be an influence between them, so in this case, the other NFC receiving coil needs to be controlled to be in a charging signal shielding state to ensure the charging signal receiving effect of the NFC receiving coil.

[0074] Here, the charging signal receiving state can be understood as connecting the charging coil to the charging circuit to form a closed loop to induce the surrounding magnetic field to obtain the charging signal. The charging signal shielding state can be understood as disconnecting the charging coil from the charging circuit, and the NFC receiving coil cannot form a closed loop to induce the surrounding magnetic field.

[0075] In some embodiments, when the working state is the first state and the charging condition is not met, the first NFC receiving coil or the second NFC receiving coil is controlled to reset to the charging signal receiving state.

[0076] It should be noted that since the NFC receiving coil in the shielding state cannot induce the surrounding magnetic field, when the electronic device leaves, in order to ensure that the next time the electronic device approaches, it can be detected in time and accurately, the NFC receiving coil in the shielding state needs to be reset to the receiving state.

[0077] In some embodiments, the method further comprises: when the first state is detected that the earphone leaves the earphone box or the earphone charging is completed, the first NFC receiving coil and the second NFC receiving coil are switched from the first state to the second state to charge the earphone box.

[0078] That is, it is preferred to charge the earphone first, and then charge the earphone box when the earphone is full, or when the earphone is taken out.

[0079] Step 204: The working state is the second state, and the first NFC receiving coil and the second NFC receiving coil are controlled to be in a charging signal receiving state to charge the earphone box.

[0080] In practical applications, the NFC receiving coil can be controlled to be connected to the charging circuit through a switch assembly. Specifically, the earphone box further comprises: a charging circuit and a control switch group, and the first NFC receiving coil and the second NFC receiving coil are connected to the charging circuit through the control switch group.

[0081] In some embodiments, when the operating state is a first state and the charging conditions are met, the method includes:

[0082] When the control switch group is in the first open / closed state, the first NFC receiving coil is in the charging signal receiving state.

[0083] Alternatively, when the control switch group is controlled to be in the second open / closed state, the second NFC receiving coil is in the charging signal receiving state.

[0084] Alternatively, when the control switch group is controlled to be in the third open / closed state, both the first NFC receiving coil and the second NFC receiving coil are in the charging signal receiving state.

[0085] When the working state is the second state and the charging conditions are met, the method includes: when the control switch group is in the fourth open / closed state, the first NFC receiving coil and the second NFC receiving coil are connected in series and both are in the charging signal receiving state.

[0086] In practical applications, the control switch group includes at least one control switch. By controlling the open and closed state of the control switch, the first NFC receiving coil and / or the second NFC receiving coil can be connected to the charging circuit, thereby putting the NFC receiving coil into a charging signal receiving state, or disconnected from the charging circuit, thereby putting the NFC receiving coil into a charging signal shielding state. The control switch can be a single-pole single-throw switch or a single-pole multi-throw switch.

[0087] In some embodiments, the charging circuit includes a first NFC controller, a second NFC controller, a first rectifier circuit, a second rectifier circuit, and a power management chip; the control switch group includes a first single-pole double-throw switch, a second single-pole double-throw switch, and a third single-pole double-throw switch.

[0088] The first end of the first NFC receiving coil is connected to the first end of the first NFC controller, the second end of the first NFC receiving coil is connected to the closing end of the first single-pole double-throw switch, and the first shunt end of the first single-pole double-throw switch is connected to the closing end of the first NFC receiving coil. Figure 8 The switch 1A terminal is connected to the second terminal of the first NFC controller;

[0089] The first end of the second NFC receiving coil is connected to the combiner terminal of the second single-pole double-throw switch, and the first branch terminal of the second single-pole double-throw switch ( Figure 8 (switch2A terminal) and the second branch terminal of the first single-pole double-throw switch ( Figure 8 Connected to the second branch terminal of the second single-pole double-throw switch (switch1B terminal), the second branch terminal of the second single-pole double-throw switch ( Figure 8 The switch2B terminal is connected to the first terminal of the second NFC controller;

[0090] a second end of the second NFC receiving coil is connected with a closed end of the third SPDT switch, a first branch end (switch3A end) of the third SPDT switch is connected with a second end of the first NFC controller; a second branch end (switch3B end) of the third SPDT switch is connected with a second end of the second NFC controller; Figure 8 Figure 8

[0091] two input ends of the first rectifier circuit are connected with two ends of the first NFC receiving coil, and an output end of the first rectifier circuit is connected with a first input end of the power management chip;

[0092] two input ends of the second rectifier circuit are connected with two ends of the second NFC receiving coil, and an output end of the second rectifier circuit is connected with a second input end of the power management chip.

[0093] That is, the first on-off state of the control switch group is that the first SPDT switch is closed to the first branch end, the second SPDT switch is closed to the second branch end, and the third SPDT switch is closed to the first branch end; here, the second SPDT switch can also be closed to the first branch end or not closed, and the third SPDT switch can also not be closed;

[0094] the second on-off state is that the first SPDT switch is closed to the second branch end, the second SPDT switch is closed to the second branch end, and the third SPDT switch is closed to the second branch end; here, the first SPDT switch can also not be closed, the second SPDT switch can also be closed to the first branch end or not closed;

[0095] the third on-off state is that the first SPDT switch is closed to the first branch end, the second SPDT switch is closed to the second branch end, and the third SPDT switch is closed to the second branch end;

[0096] the fourth on-off state is that the first SPDT switch is closed to the second branch end, the second SPDT switch is closed to the first branch end, and the third SPDT switch is closed to the first branch end.

[0097] In some embodiments, the earphone box is further provided with a selection switch group, which is used for selecting a charging object for the charging circuit;

[0098] controlling the first NFC receiving coil and / or the second NFC receiving coil to be in a charging signal receiving state, and charging earphones in the earphone box, comprising:

[0099] ​​controlling the selection switch group to be in the fifth open-close state when the first NFC receiving coil is in the charging signal receiving state, so as to charge the left earphone;

[0100] controlling the selection switch group to be in the sixth open-close state when the second NFC receiving coil is in the charging signal receiving state, so as to charge the right earphone;

[0101] controlling the selection switch group to be in the seventh open-close state when the first NFC receiving coil and the second NFC receiving coil are in the charging signal receiving state, so as to charge the left earphone and the right earphone respectively;

[0102] controlling the first NFC receiving coil and the second NFC receiving coil to be in the charging signal receiving state, and controlling the selection switch group to be in the eighth open-close state, so as to charge the earphone box.

[0103] That is, the selection switch group is used to select a charging object. Here, the charging object is one of the left earphone, the right earphone, the left earphone and the right earphone, and the earphone box.

[0104] In practical applications, the selection switch group includes at least one selection switch, and the selection switch can be a single-pole single-throw switch or a single-pole multi-throw switch.

[0105] Specifically, the selection switch group can include a first selection switch, a second selection switch, and a third selection switch; the left earphone is connected to the charging circuit through the first selection switch, the right earphone is connected to the charging circuit through the second selection switch, and the earphone box is connected to the charging circuit through the third selection switch.

[0106] The earphone box is also provided with a selection switch; the left earphone is connected to the charging circuit through the first selection switch, the right earphone is connected to the charging circuit through the second selection switch, and the earphone box is connected to the charging circuit through the third selection switch.

[0107] The earphone box is also provided with a selection switch; the left earphone is connected to the charging circuit through the first selection switch, the right earphone is connected to the charging circuit through the second selection switch, and the earphone box is connected to the charging circuit through the third selection switch.

[0108] When it is detected that the earphone is placed in the earphone box, the first selection switch and / or the second selection switch are controlled to be in the closed state, and other selection switches are controlled to be in the open state, so as to charge the left earphone and / or the right earphone by using the charging signal;

[0109] When it is detected that the earphone is not placed in the earphone box, the third selection switch is controlled to be in the closed state, and other selection switches are controlled to be in the open state, so as to charge the earphone box by using the charging signal.

[0110] It can be understood that the fifth open-close state is that the first selection switch is in a closed state, and the second selection switch and the third selection switch are in an open state; the sixth open-close state is that the second selection switch is in a closed state, and the first selection switch and the third selection switch are in an open state; the seventh open-close state is that the first selection switch and the second selection switch are in a closed state, and the third selection switch is in an open state; and the eighth open-close state is that the first selection switch and the second selection switch are in an open state, and the third selection switch is in a closed state.

[0111] The charging circuit of the earphone box is further described based on the above embodiment. Figure 8 A second structural diagram of the earphone box is provided in the embodiment, as shown in the figure, the earphone box comprises a charging circuit, two NFC receiving coils, a control switch group (switch1, switch2 and switch3) and a selection switch group (switch4). Figure 8

[0112] Before the wireless charging method provided by the embodiment of the application is introduced, the structure of the earphone box is exemplarily described.

[0113] The earphone box comprises two NFC controllers and two NFC coils, the two NFC coils can be independently connected with the two NFC controllers, or can be connected in series with the first NFC controller or the second NFC controller; meanwhile, the currents rectified by the two NFC coils can be separately input into the PMIC, or can be combined into one coil, then rectified and input into the PMIC.

[0114] The control switch group comprises three switches, and switch1 / 2 / 3 are single-pole double-throw switches. The first open-close state is that switch1 is set to A port, switch2 is set to B port, and switch3 is set to A port, the first NFC receiving coil is connected with the first NFC controller, the second NFC receiving coil is disconnected with the second NFC controller, and the two coils are not connected in series and are independent of each other.

[0115] The second open-close state is that switch1 is set to B port, switch2 is set to B port, and switch3 is set to B port, the first NFC receiving coil is disconnected with the first NFC controller, the second NFC receiving coil is connected with the second NFC controller, and the two coils are independent of each other.

[0116] The third open-close state is that switch1 is set to A port, switch2 is set to B port, and switch3 is set to B port, the first NFC receiving coil and the second NFC receiving coil are connected with the first NFC controller and the second NFC controller respectively, and the two coils are independent of each other.

[0117] ​The fourth open and close state: switch1 is connected to B port, switch2 is connected to A port, and switch3 is connected to A port, at this time, the first NFC coil and the second NFC coil are connected in series with each other, and are connected to the first NFC controller, at this time, the second NFC controller is in an idle state.

[0118] When the mobile phone NFC is close to the coil, the NFC controller can immediately detect it, and the PMIC can immediately obtain the rectified energy and select to charge the earphone box or the earphone battery.

[0119] The specific working logic is as follows:

[0120] 1. In the default state, the processor first detects whether there is an earphone in the Bluetooth earphone box, if there is an earphone, the two coils are driven to be in a separate state by the motor; if there is no earphone, the two coils are driven to move to the center and enter the combined state.

[0121] 2. When the NFC of the electronic device is turned on to generate an RF field and is close to the earphone box, if it is in a separate charging state, both NFC controllers can immediately detect it, and then notify the processor to perform double communication and double rectification. After the rectified energy of the two rectification circuits enters the PMIC, it is supplied to the left and right earphones for charging. If there is only one earphone in the earphone box, the processor will notify the corresponding NFC controller to stop communication and only charge one earphone. When the earphone is fully charged, the processor will control the switch to control the coil to enter the combined state to charge the earphone box.

[0122] 3. When in the combined state, the first NFC controller detects immediately when the charging condition is met, and then notifies the M processor, and then starts communication. After the rectified energy enters the PMIC, the earphone box battery starts to be charged.

[0123] 4. If there is no earphone in the earphone box during the charging process, the earphone is put in the middle, which can switch from the combined state to the separate state to charge the earphone.

[0124] 5. After the electronic device leaves, the processor resets the state according to the earphone box earphone condition. In the separate state, if there is a shielded NFC receiving coil, it needs to be restored to the receiving state.

[0125] It should be noted that the electronic device can be a smart phone, a personal computer, a notebook computer, a tablet computer, a portable wearable device, a portable charging device, etc.

[0126] By means of the above technical scheme, the earphone box can be reversely charged by an electronic device with NFC function or the earphone can be reversely charged by the electronic device with NFC function, the earphone can be directly charged when the earphone is in the earphone box, the earphone box can be charged when the earphone is not in the earphone box, and the earphone in the earphone box can be charged when the earphone is put into the earphone box, so that a more convenient charging mode is provided for the wireless earphone, and the charging mode of the wireless earphone is enriched.

[0127] The application also provides a wireless charging device applied to an earphone box, the earphone box comprising a first near field communication (NFC) receiving coil and a second NFC receiving coil, as shown in Figure 9 The device comprises:

[0128] A detection unit 901 is configured to detect an earphone accommodation state in the earphone box.

[0129] A setting unit 902 is configured to set a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone accommodation state.

[0130] A power management unit 903 is configured to charge an earphone in the earphone box by means of the first NFC receiving coil and / or the second NFC receiving coil when the working state is a first state.

[0131] The power management unit 903 is further configured to charge the earphone box by means of the first NFC receiving coil and the second NFC receiving coil when the working state is a second state.

[0132] In some embodiments, the setting unit 902 is specifically configured to set the working state to a separate state when the earphone accommodation state indicates that the earphone is placed in the earphone box, and set the working state to a combined state when the earphone accommodation state indicates that the earphone is not placed in the earphone box.

[0133] In some embodiments, the earphone box comprises a driving device, and the setting unit 902 is specifically configured to control the driving device to work to drive the first NFC receiving coil and the second NFC receiving coil to move to two ends to switch to the separate state when the working state is the combined state.

[0134] The driving device is controlled to work to drive the first NFC receiving coil and the second NFC receiving coil to move to the center to switch to the combined state when the working state is the separate state.

[0135] In some embodiments, the first state is the separate state, and the second state is the combined state.

[0136] In some embodiments, the device further comprises a control unit, which, when the working state is the first state and the charging condition is met, controls the first NFC receiving coil and / or the second NFC receiving coil to be in a charging signal receiving state to charge the earphone in the earphone box.

[0137] When the working state is the second state and the charging condition is met, the control unit controls the first NFC receiving coil and the second NFC receiving coil to be in a charging signal receiving state to charge the earphone box.

[0138] In some embodiments, the control unit is specifically configured to, when the working state is the first state and the charging condition is met, and only one earphone is detected in the earphone box, control one of the first NFC receiving coil and the second NFC receiving coil to be in a charging signal receiving state and the other to be in a charging signal shielding state.

[0139] Alternatively, when only one earphone is detected in the earphone box, the control unit controls both the first NFC receiving coil and the second NFC receiving coil to be in a charging signal receiving state, uses one of the NFC receiving coils to charge the earphone, and uses the other NFC receiving coil to charge the earphone box.

[0140] Alternatively, when two earphones are detected in the earphone box, the control unit controls both the first NFC receiving coil and the second NFC receiving coil to be in a charging signal receiving state.

[0141] In some embodiments, the earphone box further comprises a charging circuit and a control switch group, and the first NFC receiving coil and the second NFC receiving coil are connected to the charging circuit through the control switch group.

[0142] The control unit is specifically configured to, when the working state is the first state and the charging condition is met, control the control switch group to be in a first open-close state, so that the first NFC receiving coil is in a charging signal receiving state; or control the control switch group to be in a second open-close state, so that the second NFC receiving coil is in a charging signal receiving state; or control the control switch group to be in a third open-close state, so that the first NFC receiving coil and the second NFC receiving coil are both in a charging signal receiving state; and when the working state is the second state and the charging condition is met, the method comprises: controlling the control switch group to be in a fourth open-close state, so that the first NFC receiving coil and the second NFC receiving coil are connected in series and are both in a charging signal receiving state.

[0143] In some embodiments, the charging circuit comprises a first NFC controller, a second NFC controller, a first rectifier circuit, a second rectifier circuit and a power management chip; the control switch group comprises a first single-pole double-throw switch, a second single-pole double-throw switch and a third single-pole double-throw switch;

[0144] The first end of the first NFC receiving coil is connected to the first end of the first NFC controller, and the second end of the first NFC receiving coil is connected to the common end of the first single-pole double-throw switch; the first branch end of the first single-pole double-throw switch is connected to the second end of the first NFC controller;

[0145] The first end of the second NFC receiving coil is connected to the common end of the second single-pole double-throw switch, the first branch end of the second single-pole double-throw switch is connected to the second branch end of the first single-pole double-throw switch, and the second branch end of the second single-pole double-throw switch is connected to the first end of the second NFC controller;

[0146] The second end of the second NFC receiving coil is connected to the common end of the third single-pole double-throw switch, the first branch end of the third single-pole double-throw switch is connected to the second end of the first NFC controller, and the second branch end of the third single-pole double-throw switch is connected to the second end of the second NFC controller;

[0147] The two input ends of the first rectifier circuit are connected to the two ends of the first NFC receiving coil, and the output end of the first rectifier circuit is connected to the first input end of the power management chip;

[0148] The two input ends of the second rectifier circuit are connected to the two ends of the second NFC receiving coil, and the output end of the second rectifier circuit is connected to the second input end of the power management chip.

[0149] In some embodiments, the earphone box is further provided with a selection switch group, which is used to select a charging object for the charging circuit;

[0150] The control unit is further configured to control the selection switch group to be in a fifth open-close state to charge the left earphone when the first NFC receiving coil is in a charging signal receiving state;

[0151] The control unit is further configured to control the selection switch group to be in a sixth open-close state to charge the right earphone when the second NFC receiving coil is in a charging signal receiving state;

[0152] The control unit is further configured to control the selection switch group to be in a seventh open-close state to charge the left earphone and the right earphone respectively when the first NFC receiving coil and the second NFC receiving coil are in a charging signal receiving state;

[0153] The control of the first NFC receiving coil and the second NFC receiving coil in the charging signal receiving state is for charging the earphone box, comprising:

[0154] The control of the first NFC receiving coil and the second NFC receiving coil in the charging signal receiving state is for charging the earphone box, comprising:

[0155] In some embodiments, the control unit is further configured to, when the working state is the first state and the charging condition is not met, control the first NFC receiving coil or the second NFC receiving coil to reset to the charging signal receiving state.

[0156] In some embodiments, the setting unit 902 is further configured to, when the detection unit 901 detects that the earphone leaves the earphone box or detects that the earphone charging is completed, switch the first NFC receiving coil and the second NFC receiving coil from the first state to the second state for charging the earphone box.

[0157] In some embodiments, an iron oxide is attached to the inside of each NFC receiving coil.

[0158] In some embodiments, the first NFC receiving coil and the second NFC coil are arranged on the same surface of the earphone box.

[0159] The earphone box provided by the embodiments of the present application comprises a first NFC receiving coil and a second NFC receiving coil; the earphone box further comprises a processor and a memory configured to store a computer program capable of running on the processor,

[0160] Of course, in actual application, each component in the device is coupled together through a bus system. It can be understood that the bus system is used to realize the connection and communication between the components. In addition to the data bus, the bus system also includes a power bus, a control bus and a state signal bus.

[0161] In actual application, the earphone box further comprises an NFC controller, a power management chip and a rectifier circuit.

[0162] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the method provided by any of the above embodiments.

[0163] In practical applications, the processor can be at least one of a microcontroller unit (MCU), an application specific integrated circuit (ASIC), a digital signal processing device (DSPD), a programmable logic device (PLD), a field-programmable gate array (FPGA), a controller, a microcontroller, and a microprocessor. It can be understood that, for different devices, the electronic device used to implement the functions of the processor can also be other devices, and the embodiments of the present application are not limited in this regard.

[0164] The memory can be a volatile memory (such as a random-access memory (RAM)), a non-volatile memory (such as a read-only memory (ROM), a flash memory, a hard disk (HDD) or a solid-state disk (SSD)), or a combination of the above types of memories, and provides instructions and data to the processor.

[0165] It should be noted that "first", "second", and the like are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0166] The methods disclosed in the several method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.

[0167] The features disclosed in the several product embodiments provided by the present application can be combined arbitrarily without conflict to obtain new product embodiments.

[0168] The features disclosed in the several method or device embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method or device embodiments.

[0169] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wireless charging method applied to an earphone case, characterized in that, The earphone box comprises a first NFC receiving coil and a second NFC receiving coil; the method comprises: detecting an earphone accommodation state in the earphone box; setting an operating state of the first NFC receiving coil and the second NFC receiving coil based on the earphone accommodation state; when the operating state is a first state, charging the earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil, the first state being a state in which the first NFC receiving coil and the second NFC receiving coil are far away from and disconnected from each other; when the operating state is a second state, charging the earphone box by using the first NFC receiving coil and the second NFC receiving coil, the second state being a state in which the first NFC receiving coil and the second NFC receiving coil are close to and connected in series with each other.

2. The method of claim 1, wherein, The setting of the operating state of the first NFC receiving coil and the second NFC receiving coil based on the earphone accommodation state comprises: when the earphone accommodation state indicates that the earphone is placed in the earphone box, setting the operating state to a separate state; when the earphone accommodation state indicates that the earphone is not placed in the earphone box, setting the operating state to a combined state.

3. The method of claim 2, wherein, The earphone box comprises a driving device, The setting of the operating state to the separate state comprises: when the operating state is the combined state, controlling the driving device to work to drive the first NFC receiving coil and the second NFC receiving coil to move to two ends, so as to switch to the separate state; The setting of the operating state to the combined state comprises: when the operating state is the separate state, controlling the driving device to work to drive the first NFC receiving coil and the second NFC receiving coil to move to a center, so as to switch to the combined state.

4. The method of claim 2, wherein, The first state is the separate state, and the second state is the combined state.

5. The method of claim 1, wherein, When the operating state is the first state, the charging of the earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil comprises: when the operating state is the first state and a charging condition is met, controlling the first NFC receiving coil and / or the second NFC receiving coil to be in a charging signal receiving state, so as to charge the earphone in the earphone box; When the operating state is the second state, the charging of the earphone box by using the first NFC receiving coil and the second NFC receiving coil comprises: when the operating state is the second state and the charging condition is met, controlling the first NFC receiving coil and the second NFC receiving coil to be in the charging signal receiving state, so as to charge the earphone box.

6. The method of claim 5, wherein, When the operating state is the first state and the charging condition is met, the method comprises: when it is detected that there is only one earphone in the earphone box, controlling one of the first NFC receiving coil and the second NFC receiving coil to be in the charging signal receiving state and the other to be in a charging signal shielding state; Or, when detecting that there is only one earphone in the earphone box, controlling the first NFC receiving coil and the second NFC receiving coil to be in the charging signal receiving state, using one of the NFC receiving coils to charge the earphone and using the other NFC receiving coil to charge the earphone box; Or, when detecting that there are two earphones in the earphone box, controlling the first NFC receiving coil and the second NFC receiving coil to be in the charging signal receiving state.

7. The method of claim 5, wherein, The earphone box further comprises a charging circuit and a control switch group, and the first NFC receiving coil and the second NFC receiving coil are connected to the charging circuit through the control switch group; When the working state is the first state and the charging condition is met, the method comprises: When the control switch group is controlled to be in the first opening and closing state, the first NFC receiving coil is in the charging signal receiving state; Or, when the control switch group is controlled to be in the second opening and closing state, the second NFC receiving coil is in the charging signal receiving state; Or, when the control switch group is controlled to be in the third opening and closing state, the first NFC receiving coil and the second NFC receiving coil are both in the charging signal receiving state; When the working state is the second state and the charging condition is met, the method comprises: when the control switch group is controlled to be in the fourth opening and closing state, the first NFC receiving coil and the second NFC receiving coil are connected in series and are both in the charging signal receiving state.

8. The method of claim 7, wherein, The charging circuit comprises a first NFC controller, a second NFC controller, a first rectifier circuit, a second rectifier circuit and a power management chip; and the control switch group comprises a first single-pole double-throw switch, a second single-pole double-throw switch and a third single-pole double-throw switch. The first end of the first NFC receiving coil is connected to the first end of the first NFC controller, the second end of the first NFC receiving coil is connected to the common end of the first single-pole double-throw switch, and the first branch end of the first single-pole double-throw switch is connected to the second end of the first NFC controller; The first end of the second NFC receiving coil is connected to the common end of the second single-pole double-throw switch, the first branch end of the second single-pole double-throw switch is connected to the second branch end of the first single-pole double-throw switch, and the second branch end of the second single-pole double-throw switch is connected to the first end of the second NFC controller; The second end of the second NFC receiving coil is connected to the common end of the third single-pole double-throw switch, the first branch end of the third single-pole double-throw switch is connected to the second end of the first NFC controller, and the second branch end of the third single-pole double-throw switch is connected to the second end of the second NFC controller; The two input ends of the first rectifier circuit are connected to the two ends of the first NFC receiving coil, and the output end of the first rectifier circuit is connected to the first input end of the power management chip; The two input ends of the second rectifier circuit are connected to the two ends of the second NFC receiving coil, and the output end of the second rectifier circuit is connected to the second input end of the power management chip.

9. The method of claim 7, wherein, The earphone box is further provided with a selection switch group, which is used for selecting a charging object for the charging circuit; The control of the first NFC receiving coil and / or the second NFC receiving coil in the charging signal receiving state is used for charging the earphone in the earphone box, and the method further comprises: When the first NFC receiving coil is controlled in the charging signal receiving state, the selection switch group is controlled in the fifth open / close state, and the left earphone is charged; When the second NFC receiving coil is controlled in the charging signal receiving state, the selection switch group is controlled in the sixth open / close state, and the right earphone is charged; When the first NFC receiving coil and the second NFC receiving coil are controlled in the charging signal receiving state, the selection switch group is controlled in the seventh open / close state, and the left earphone and the right earphone are charged respectively; The control of the first NFC receiving coil and the second NFC receiving coil in the charging signal receiving state is used for charging the earphone box. The control of the first NFC receiving coil and the second NFC receiving coil in the charging signal receiving state is used for charging the earphone box.

10. The method of claim 5, wherein, The method further comprises: When the working state is the first state and the charging condition is not met, the first NFC receiving coil or the second NFC receiving coil is controlled to reset to the charging signal receiving state.

11. The method of claim 5, wherein, After the control of the first NFC receiving coil and / or the second NFC receiving coil in the charging signal receiving state is used for charging the earphone in the earphone box, the method further comprises: When it is detected that the earphone leaves the earphone box or it is detected that the earphone charging is completed, the first NFC receiving coil and the second NFC receiving coil are switched from the first state to the second state, and the earphone box is charged.

12. The method according to any one of claims 1 to 11, characterized in that, An iron oxide body is attached to the inner side of each NFC receiving coil.

13. The method according to any one of claims 1 to 11, characterized in that, The first NFC receiving coil and the second NFC coil are arranged on the same surface of the earphone box.

14. A wireless charging device applied to an earphone box, characterized in that, The earphone box comprises a first NFC receiving coil and a second NFC receiving coil; and the device comprises: A detection unit is configured to detect an earphone containing state in the earphone box; A setting unit is configured to set a working state of the first NFC receiving coil and the second NFC receiving coil based on the earphone containing state; A power management unit is configured to charge the earphone in the earphone box by using the first NFC receiving coil and / or the second NFC receiving coil when the working state is a first state, and the first state is a state in which the first NFC receiving coil and the second NFC receiving coil are far away and disconnected. The power management unit is further configured to charge the earphone box by using the first NFC receiving coil and the second NFC receiving coil when the working state is a second state, and the second state is a state in which the first NFC receiving coil and the second NFC receiving coil are close and connected in series.

15. An earphone case, characterized in that, The earphone box comprises a first NFC receiving coil and a second NFC receiving coil; The earphone box further comprises a processor and a memory configured to store a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method of any one of claims 1 to 13 when running the computer program.

16. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 13.

Images