Electronic equipment protective sleeve, electronic equipment assembly and wireless charging system

Abstract

The embodiment of the invention provides an electronic equipment protection sleeve, an electronic equipment assembly and a wireless charging system, relates to the technical field of electronic equipment, and improves the charging convenience of an electronic pen. According to the specific scheme, the electronic equipment protective sleeve comprises a shell, and a coil module, a charging module and a communication module which are arranged on the shell. The shell further comprises a first containing part and a second containing part, and when the first electronic device is located in the first containing part and the second electronic device is located in the second containing part, the coil module is used for obtaining electric energy provided by the first electronic device in a wireless charging mode. And the coil module is also used for wirelessly charging the second electronic equipment according to the electric energy provided by the first electronic equipment. The charging module is used for controlling whether the coil module wirelessly charges the second electronic equipment or not. The communication module is used for sending the receiving power information of the electronic equipment protection sleeve to the first electronic equipment. The embodiment of the invention is used for the wireless charging process of the second electronic equipment.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic devices, and in particular to an electronic device protective cover, an electronic device component, and a wireless charging system. Background Art

[0002] As mobile phone screens continue to grow larger, especially with the launch of foldable screen phones, more and more mobile phones are equipped with electronic pens, and how to conveniently charge the electronic pens is receiving more and more attention.

[0003] Currently, electronic pens are typically charged using a separate charging device. However, this requires users to carry an additional device with them, significantly reducing convenience and impacting the user experience. If a charging device is not required, the electronic pen can be charged wirelessly directly using a mobile phone. However, this method requires a dedicated or additional wireless charging module on the phone, increasing phone design costs and limiting its applicability. Summary of the Invention

[0004] The embodiments of the present application provide an electronic device protective cover, an electronic device assembly, and a wireless charging system, which improve the convenience of charging an electronic pen.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0006] In a first aspect, an embodiment of the present application provides an electronic device protective cover, which includes a shell, and a coil module, a charging module, and a communication module arranged on the shell. The shell also includes a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the coil module is used to obtain the electric energy provided by the first electronic device in a wireless charging manner, and the coil module is also used to wirelessly charge the second electronic device based on the electric energy provided by the first electronic device. The charging module is used to control whether the coil module wirelessly charges the second electronic device. The communication module is used to send the receiving power information of the electronic device protective cover to the first electronic device. Among them, the first electronic device can be a portable device such as a mobile phone or a tablet computer, and the second electronic device can be an accessory such as an electronic pen.

[0007] Thus, the electronic device protective cover provided in the embodiments of the present application can obtain power from a portable first electronic device to wirelessly charge a second electronic device, thereby improving the convenience of charging the second electronic device. In addition, the electronic device protective cover can send received power information to the first electronic device, thereby preventing the electronic device protective cover from being identified as a foreign object, or preventing the electronic device protective cover and the second electronic device from being identified as foreign objects together, thereby improving the applicability of the electronic device protective cover.

[0008] In one possible design, the coil module includes a first transmitting coil, a first receiving coil, a first end, and a second end. The first end of the first receiving coil is coupled to the first end of the coil module, the second end of the first receiving coil is coupled to the first end of the first transmitting coil, and the second end of the first transmitting coil is coupled to the second end of the coil module. Thus, the first transmitting coil and the first receiving coil can be connected in series. The coil module can obtain power from the first electronic device through the first receiving coil and provide power to the second electronic device through the first transmitting coil, thereby improving the convenience of charging the second electronic device.

[0009] In one possible design, the charging module includes a first switch circuit and a first controller, wherein the first end of the first switch circuit is coupled to the first end of the coil module, the second end of the first switch circuit is coupled to the second end of the coil module, and the control end of the first switch circuit is coupled to the first controller. The first controller is used to control the first switch circuit to be in an on state or an off state. When the first switch circuit is in the on state, the coil module wirelessly charges the second electronic device, and when the first switch circuit is in the off state, the coil module does not wirelessly charge the second electronic device. Thus, the first controller can control the first switch circuit to control whether the path in which the coil module is located is conductive. When the first switch circuit is in the on state, the coil module can provide power to the second electronic device. When the second switch circuit is in the off state, the effect of the electronic device protective cover on the wireless charging of the first electronic device can be reduced.

[0010] In one possible design, the charging module further includes a first rectifier circuit and a first voltage-stabilizing circuit. The first input end of the first rectifier circuit is coupled to the first end of the coil module, and the second input end of the first rectifier circuit is coupled to the second end of the coil module. The first input end of the first voltage-stabilizing circuit is coupled to the first output end of the first rectifier circuit, the second input end of the first voltage-stabilizing circuit is coupled to the second output end of the first rectifier circuit, the output end of the first voltage-stabilizing circuit is coupled to the first controller, and the output end of the first voltage-stabilizing circuit is also coupled to the communication module. Thus, the electronic device protective cover can power the first controller and the communication module via the first rectifier circuit and the first voltage-stabilizing circuit. In addition, because the first controller consumes relatively little power, it will not affect the wireless charging of the first electronic device.

[0011] In one possible design, the charging module further includes a first matching circuit, wherein a first end of the first matching circuit is coupled to a first end of the coil module, and a second end of the first matching circuit is coupled to a second end of the coil module. Thus, the electronic device protective cover can offset the inductance of the coil module through the first matching circuit.

[0012] In one possible design, the coil module includes a second transmitting coil, a second receiving coil, a third end, a fourth end, a fifth end, and a sixth end. The first end of the second receiving coil is coupled to the third end of the coil module, the second end of the second receiving coil is coupled to the fourth end of the coil module, the first end of the second transmitting coil is coupled to the fifth end of the coil module, and the second end of the second transmitting coil is coupled to the sixth end of the coil module.

[0013] In one possible design, the charging module includes a second rectifier circuit, a second switching circuit, a first transmitter, and a second controller. The first input of the second rectifier circuit is coupled to the third terminal of the coil module, and the second input of the second rectifier circuit is coupled to the fourth terminal of the coil module. The first terminal of the second switching circuit is coupled to the first output of the second rectifier circuit, the second terminal of the second switching circuit is coupled to the first input of the first transmitter, the second input of the first transmitter is coupled to the second output of the second rectifier circuit, and the control terminal of the second switching circuit is coupled to the second controller. The first output of the first transmitter is coupled to the fifth terminal of the coil module, and the second output of the first transmitter is coupled to the sixth terminal of the coil module. The second controller is configured to control the second switching circuit to be in an on or off state. When the second switching circuit is in the on state, the coil module wirelessly charges the second electronic device. When the second switching circuit is in the off state, the coil module does not wirelessly charge the second electronic device. Therefore, because the second transmitting coil and the second receiving coil are not directly electrically connected, the operating frequency of the first transmitter can be different from the operating frequency of the coil of the first electronic device, adapting to the various operating frequencies of the second electronic device.

[0014] In one possible design, the charging module further includes a second voltage-stabilizing circuit, wherein a first input of the second voltage-stabilizing circuit is coupled to a first output of the second rectifier circuit, a second input of the second voltage-stabilizing circuit is coupled to a second output of the second rectifier circuit, an output of the second voltage-stabilizing circuit is coupled to a second controller, and the output of the second voltage-stabilizing circuit is further coupled to the communication module. Thus, the second rectifier circuit and the second voltage-stabilizing circuit can be used to power the second controller and the communication module. Furthermore, because the first controller consumes relatively little power, it does not affect wireless charging of the first electronic device.

[0015] In one possible design, the charging module further includes a second matching circuit, wherein a first end of the second matching circuit is coupled to a third end of the coil module, and a second end of the second matching circuit is coupled to a fourth end of the coil module. Thus, the electronic device protective cover can offset the inductance of the coil module through the second matching circuit.

[0016] In one possible design, the first transmitting coil or the second transmitting coil is a coil that meets the Qi standard or the NFC standard, and the first receiving coil or the second receiving coil is a coil that meets the Qi standard or the NFC standard.

[0017] In a second aspect, embodiments of the present application provide an electronic device assembly, comprising a second electronic device and the electronic device protective cover of the first aspect, wherein the electronic device protective cover comprises a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the first electronic device is configured to provide power to a coil module of the electronic device protective cover in a wireless charging manner, and the electronic device protective cover is configured to wirelessly charge the second electronic device using the power provided by the first electronic device.

[0018] In a third aspect, embodiments of the present application provide an electronic device assembly, comprising a first electronic device, a second electronic device, and the electronic device protective cover of the first aspect, wherein the electronic device protective cover comprises a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the first electronic device is configured to provide power to a coil module of the electronic device protective cover in a wireless charging manner, and the electronic device protective cover is configured to wirelessly charge the second electronic device using the power provided by the first electronic device.

[0019] In a fourth aspect, an embodiment of the present application provides a wireless charging system, which includes a wireless charging base, a first electronic device, a second electronic device and an electronic device protective cover, wherein the electronic device protective cover includes a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, and the electronic device protective cover is located on the wireless charging base, the electronic device protective cover is used to send first receiving power information to the first electronic device. The first electronic device is used to receive the first receiving power information of the electronic device protective cover and send second receiving power information to the wireless charging base, the second receiving power information including the receiving power information of the first electronic device and the first receiving power information. The wireless charging base is used to obtain foreign object loss power based on the second receiving power information and the transmission power information of the wireless charging base. When the foreign object loss power is greater than a preset threshold, the supply of power to the first electronic device is stopped, and when the foreign object loss power is less than or equal to the preset threshold, the supply of power to the first electronic device continues.

[0020] In one possible design, the electronic device protective cover further includes a coil module and a charging module. The coil module includes a first transmitting coil and a first receiving coil. The first end of the first receiving coil is coupled to the first end of the charging module, the second end of the first receiving coil is coupled to the first end of the first transmitting coil, and the second end of the first transmitting coil is coupled to the second end of the charging module.

[0021] In one possible design, the electronic device protective cover further includes a coil module and a charging module, the coil module including a second transmitting coil and a second receiving coil, the first end of the second receiving coil being coupled to the first end of the charging module, the second end of the second receiving coil being coupled to the second end of the charging module, the first end of the second transmitting coil being coupled to the third end of the charging module, and the second end of the second transmitting coil being coupled to the fourth end of the charging module.

[0022] In a fifth aspect, an embodiment of the present application provides a wireless charging method, which is applied to a wireless charging system, the wireless charging system including a wireless charging base, a first electronic device, a second electronic device, and an electronic device protective cover, the electronic device protective cover including a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, and the electronic device protective cover is located on the wireless charging base, the method includes: the electronic device protective cover sending first received power information to the first electronic device. The first electronic device receives the first received power information of the electronic device protective cover and sends second received power information to the wireless charging base, the second received power information including the received power information of the first electronic device and the first received power information. The wireless charging base obtains foreign object loss power based on the second received power information and the transmit power signal of the wireless charging base. When the foreign object loss power is greater than a preset threshold, the wireless charging base stops providing power to the first electronic device. When the foreign object loss power is less than or equal to the preset threshold, the wireless charging base continues to provide power to the first electronic device.

[0023] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, including computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the wireless charging method in any of the above aspects and any possible implementation methods.

[0024] In a seventh aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a computer or a processor, it enables the computer or the processor to execute the wireless charging method in any of the above aspects and any possible implementation methods.

[0025] It can be understood that any of the electronic device protective covers, electronic device components, wireless charging systems, computer-readable storage media or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0026] These and other aspects of the present application will become more readily apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0028] Figure 2 A schematic structural diagram of another electronic device provided in an embodiment of the present application;

[0029] Figure 3 A schematic structural diagram of an electronic device protective cover provided in an embodiment of the present application;

[0030] Figure 4 A schematic structural diagram of another electronic device protective cover provided in an embodiment of the present application;

[0031] Figure 5 A schematic structural diagram of another electronic device protective cover provided in an embodiment of the present application;

[0032] Figure 6 A schematic diagram of the structure of a wireless charging system provided in an embodiment of the present application;

[0033] Figure 7 A schematic structural diagram of another wireless charging system provided in an embodiment of the present application;

[0034] Figure 8 A schematic structural diagram of an electronic device assembly provided in an embodiment of the present application;

[0035] Figure 9 A schematic structural diagram of another electronic device assembly provided in an embodiment of the present application;

[0036] Figure 10 A circuit diagram of an electronic device component provided in an embodiment of the present application;

[0037] Figure 11 A circuit diagram of another electronic device component provided in an embodiment of the present application;

[0038] Figure 12 A schematic structural diagram of another electronic device assembly provided in an embodiment of the present application;

[0039] Figure 13 A schematic structural diagram of another electronic device assembly provided in an embodiment of the present application;

[0040] Figure 14 A circuit diagram of another electronic device component provided in an embodiment of the present application;

[0041] Figure 15 A circuit diagram of another electronic device component provided in an embodiment of the present application;

[0042] Figure 16A circuit diagram of a wireless charging system provided in an embodiment of the present application;

[0043] Figure 17 A flowchart of a wireless charging method provided in an embodiment of the present application;

[0044] Figure 18 A flowchart of another wireless charging method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] For ease of understanding, some examples of concepts related to the embodiments of this application are provided for reference as follows:

[0046] 1. Qi standard, an interconnection standard for short-range wireless inductive power transfer specified by the Wireless Power Consortium (WPC), is used to provide convenient and universal wireless charging for mobile phones and other portable electronic devices.

[0047] 2. Near-field communication (NFC) standard, a contactless identification and interconnection technology that can be used for wireless charging of low-power devices.

[0048] 3. Foreign object detection (FOD) process, that is, during the charging process, the electronic device will detect whether there is a metal foreign object. Take the wireless charging base for wireless charging of a mobile phone as an example. During the wireless charging process, the mobile phone needs to continuously report the received power Pr0 to the wireless charging base. The wireless charging base obtains its own transmission power P t And the received power Pr0 reported by the mobile phone, the estimated foreign body loss power is obtained Theoretically, the transmit power is equal to the sum of all received powers including the foreign object loss power. Exceeding the given foreign object power loss The wireless charging base will interrupt wireless charging and enter the foreign object protection.

[0049] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships can exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0050] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0051] In order to improve the convenience of charging the electronic pen, a wireless charging device can be set in the electronic device. Figure 1 As shown, Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Specifically, the electronic device may include a foldable screen mobile phone and an electronic pen, wherein the foldable screen mobile phone may be provided with a wireless charging device, and the wireless charging device may include a wireless transmitting chip, a transmitting coil, a battery and a boost circuit chip, wherein the boost circuit chip is coupled with the battery and the wireless transmitting chip, and the wireless transmitting chip is coupled with the transmitting coil. The electronic pen may include a wireless receiving chip, a receiving coil, a charging chip and a battery, wherein the wireless receiving chip is coupled with the receiving coil and the charging chip, and the charging chip is coupled with the battery. An adsorption magnet may be provided in the folding part area on the left side of the foldable screen mobile phone, and an adsorption magnet is also provided in the electronic pen accordingly. Therefore, when the electronic pen is placed in the folding part area on the left side, the adsorption magnet of the electronic pen and the adsorption magnet of the foldable screen mobile phone are attracted to each other, and the foldable screen mobile phone can wirelessly charge the electronic pen.

[0052] However, foldable phones need to be adapted separately for electronic pens, and a wireless charging design for the electronic pens needs to be made on the side of the foldable phone, which increases the cost of the foldable phone and has low versatility.

[0053] In addition, in order to improve the convenience of charging the electronic pen, an electronic device for charging the electronic pen is also proposed. Figure 2 As shown, Figure 2 A schematic structural diagram of another electronic device provided in an embodiment of the present application. The electronic device is a leather keyboard that can wirelessly charge an electronic pen. The electronic device may include a keyboard body and a wireless charging keyboard circuit. The keyboard body is provided with a charging slot, a keyboard area, and a touchpad, and the keyboard body can be used to place a tablet device. A charging coil is provided in the charging slot, and the wireless charging keyboard circuit is coupled to the charging coil to wirelessly charge the electronic pen placed in the charging slot through the charging coil. When performing wireless charging, the electronic device needs to be connected to a power supply for power supply. The wireless charging keyboard circuit modulates the voltage provided by the power supply and charges the electronic pen placed in the charging slot through the charging coil.

[0054] However, electronic devices require a separate power supply and are not suitable for smaller electronic devices. Furthermore, this solution places wireless charging on the keyboard, making it difficult to carry with everyday electronic devices, resulting in reduced portability and a poor user experience.

[0055] Therefore, an embodiment of the present application provides an electronic device protective cover, the shell of which includes a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the electronic device protective cover can obtain the power provided by the first electronic device in a wireless charging manner, and the electronic device protective cover can wirelessly charge the second electronic device. The first electronic device can be a portable device such as a mobile phone or a tablet computer, and the second electronic device can be an accessory such as an electronic pen. Thus, the electronic device protective cover can obtain power from the portable first electronic device to wirelessly charge the second electronic device, which can improve the convenience of charging the second electronic device. In addition, the electronic device protective cover can send received power information to the first electronic device, which can prevent the electronic device protective cover from being identified as a foreign object, or prevent the electronic device protective cover and the second electronic device from being identified as foreign objects together, which affects the wireless charging of the first electronic device, thereby improving the applicability of the electronic device protective cover.

[0056] In the above scenario, the electronic device protective cover solution provided in the embodiment of the present application can be applied to a bar phone case or a flip phone case, and the solution can wirelessly charge the electronic pen set on the bar phone case or the flip phone case.

[0057] The following is a further introduction to the electronic device protective cover provided in the embodiments of the present application.

[0058] like Figure 3 As shown, Figure 3 The electronic device protective cover 30 includes a housing 31 , a coil module 32 , a charging module 33 , and a communication module 34 disposed on the housing 31 .

[0059] The housing 31 further includes a first storage portion 311 and a second storage portion 312. When the first electronic device 10 is located in the first storage portion 311 and the second electronic device 20 is located in the second storage portion 312, the coil module 32 is used to obtain power provided by the first electronic device 10 in a wireless charging manner. The coil module 32 is also used to wirelessly charge the second electronic device 20 based on the power provided by the first electronic device 10. The first storage portion 311 can be provided on one side of the housing 31, and the second storage portion 312 can be provided on the other side of the housing 31.

[0060] Exemplarily, the first electronic device 10 may be a terminal device such as a mobile phone or a tablet computer. The first electronic device 10 may be provided with a wireless charging device, which may include a transmitting coil, a transmitter, a battery, etc. The first electronic device 10 may provide power to the electronic device protective cover 30 in a wireless charging manner.

[0061] Exemplarily, the second electronic device 20 can be an accessory such as an electronic pen, and the second electronic device 20 can be provided with a wireless charging device, which can include a receiving coil, a receiver and a battery, etc. The receiving coil can receive the electric energy provided by the coil module 32 in a wireless charging manner, and convert the electric energy through the receiver to charge the battery.

[0062] For example, the first storage portion 311 can be a storage space. Specifically, the first storage portion 311 can conform to the appearance of the first electronic device 10. The second storage portion 312 can also be a storage space. Specifically, the second storage portion 312 can be a storage slot that conforms to the appearance of the second electronic device 20. The second storage portion 312 can also be the back of the entire electronic device protective case 30. The second storage portion 312 can be provided with an adsorption magnet. At the same time, the second electronic device 20 is also provided with an adsorption magnet. The second electronic device 20 is stored in the second storage portion 312 via the adsorption magnet.

[0063] For example, the housing 31 may be in the form of a straight plate, such as Figure 4 As shown, Figure 4 (a) in FIG. 1 shows a configuration of a coil module. Figure 4 (b) in FIG. 1 shows another arrangement of the coil modules. Figure 4 The illustrated surface of the electronic device protective cover 30 in (a) and (b) is its inner surface, namely, the first receiving portion 311, which is the surface in contact with the back surface of the first electronic device 10. The second receiving portion 312 can be provided at any position on the outer surface of the electronic device protective cover 30, and this embodiment of the present application is not limited thereto.

[0064] For example, the housing 31 may be in the form of a flip cover, such as Figure 5 As shown, Figure 5 (a) in FIG. 1 shows a configuration of a coil module. Figure 5 (b) in FIG. 1 shows another arrangement of the coil modules. Figure 5The surface shown in (a) and (b) of the electronic device protective cover 30 is its inner surface, namely the first storage portion 311, which is the surface in contact with the back of the first electronic device 10. The second storage portion 312 can be set at any position on the outer surface of the electronic device protective cover 30, and this embodiment of the application is not limited to this. In a possible embodiment, the second storage portion 312 can be set at the outer surface of the electronic device protective cover 30. Figure 5 The flap connection shown in .

[0065] It is understood that the coil module 32, the charging module 33, and the communication module 34 can be disposed on the inner surface of the housing 31. The electronic device protective case 30 provided in the embodiment of the present application obtains power from the first electronic device 10, without the first electronic device 10 being connected to a power supply. Furthermore, the first electronic device 10 is a portable electronic device, and the electronic device protective case 30 can wirelessly charge the second electronic device 20, thereby improving portability.

[0066] The charging module 33 is used to control whether the coil module 32 wirelessly charges the second electronic device 20 .

[0067] For example, when the second electronic device 20 is located in the second storage portion 312, the charging module 33 can control the passageway in which the coil module 32 is located to be turned on. At this time, current flows through the coil module 32, and the coil module 32 can wirelessly charge the second electronic device 20. When the second electronic device 20 is not located in the second storage portion, the charging module 33 can control the passageway in which the coil module 32 is located to be turned off. At this time, no current flows through the coil module 32, and the second electronic device 20 is not wirelessly charged. In addition, when the second electronic device 20 is located in the second storage portion 312 and is fully charged, the charging module 33 can also control the passageway in which the coil module 32 is located to be turned off. At this time, no current flows through the coil module 32, and the second electronic device 20 is not wirelessly charged.

[0068] For example, the coil in the coil module 32 of the embodiment of the present application that directly interacts with the first electronic device 10 or the second electronic device 20 is not restricted by the shape of the housing of the electronic device protective case 30, but can be flexibly configured into a desired shape. For example, a shape that matches the first electronic device 10 or the second electronic device 20 can improve the efficiency of wireless charging.

[0069] The communication module 34 is configured to send the received power information of the electronic device protective cover 30 to the first electronic device 10. The received power information is used to represent the received power value of the electronic device protective cover 30.

[0070] For example, Figure 6 As shown, Figure 6This is a schematic diagram of the structure of a wireless charging system provided in an embodiment of the present application. Figure 6 The figure shows a first electronic device 10, a second electronic device 20, an electronic device protective cover 30, and a wireless charging base 40 in a wireless charging system. Taking the first electronic device 10, the second electronic device 20, and the electronic device protective cover 30 as an example, if the electronic device protective cover 30 is wirelessly charging the second electronic device 20, since the wireless charging standard (such as the Qi standard) stipulates a foreign object detection process, the foreign object loss power estimated by the wireless charging base 40 is Among them, P t is the transmitting power of the wireless charging base, Pr0 is the receiving power reported by the first electronic device, and P FO is the actual foreign object (such as metal keys) foreign object power loss, P r1 is the received power of the electronic device protective cover, theoretically P t =P r0 +P r1 +P FO If the electronic device protective cover 30 does not wirelessly charge the second electronic device 20, that is, the path where the charging module 33 controls the coil module 32 is disconnected, the receiving power of the electronic device protective cover 30 is very small. It can be understood that the receiving power of the electronic device protective cover is much smaller than The foreign object power loss estimated by the wireless charging base 40 will not exceed a given limit due to the presence of the electronic device protective cover 30. That is, even if the electronic device protective cover 30 is located on the wireless charging base 40, the wireless charging base 40 has little impact on wireless charging of the first electronic device 10.

[0071] However, if the electronic device protective cover 30 is wirelessly charging the second electronic device 20, the received power of the electronic device protective cover may easily exceed the rated power. Even if there is no foreign body (ie P FO =0), the foreign object loss power estimated by the wireless charging base 40 will also exceed the given foreign object loss power, and the wireless charging base 40 will interrupt the charging process and enter the foreign object protection mode, so that the wireless charging of the first electronic device 10 cannot be carried out normally.

[0072] Therefore, in order to reduce the influence of the electronic device protective cover 30, the communication module 34 can send the receiving power information of the electronic device protective cover 30 to the first electronic device 10. Specifically, Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of another wireless charging system provided in an embodiment of the present application. Figure 7FIG1 shows a first electronic device 10, a second electronic device 20, an electronic device protective cover 30, and a wireless charging base 40 of a wireless charging system. In order to prevent the electronic device protective cover 30 from being mistaken for a foreign object and interrupting the charging process of the first electronic device 10, the communication module 34 can report the received power P of the electronic device protective cover 30 to the first electronic device 10. r1 The first electronic device 10 receives the power P based on the received power reported by the communication module 34. r1 information and its own received power P r0 The information is reported to the wireless charging base 40, that is, the receiving power reported by the first electronic device 10 to the wireless charging base is P r0 +P r1 Therefore, the foreign object loss power estimated by the wireless charging base 40 is even though When there is no metal foreign object such as a key, the foreign object power loss estimated by the wireless charging base 40 will not exceed the given foreign object power loss, thereby ensuring the wireless charging process of the first electronic device 10 on the wireless charging base.

[0073] For example, the communication module 34 may use Bluetooth communication or wireless network communication to send the received power information of the electronic device protective cover 30 to the first electronic device 10. The communication module 34 and the charging module 33 may be independent modules, or they may be integrated into the same chip, which is not limited in this application.

[0074] Optional, such as Figure 8 and Figure 9 As shown, Figure 8 A schematic diagram of the structure of an electronic device assembly provided in an embodiment of the present application is provided. Figure 9 A schematic structural diagram of another electronic device assembly provided in an embodiment of the present application. Figure 8 and Figure 9 , respectively, show the structures of the first electronic device 10, the second electronic device 20, and the electronic device protective cover 30, wherein the coil module 32 may include a first transmitting coil 321 and a first receiving coil 322. Figure 8 The first transmitting coil 321 and the first receiving coil 322 are coils that meet the Qi standard. Figure 9 The first transmitting coil 321 and the first receiving coil 322 in the embodiment are coils that meet the NFC standard.

[0075] The first electronic device 10 may include a first coil 11, a first transceiver 12, a second coil 13, and a second transceiver 14. The second electronic device 20 may include a third coil 21 and a receiver 22. Figure 8 and Figure 9(not shown). The first electronic device 10 and the second electronic device 20 may further include other devices, Figure 8 and Figure 9 In the embodiment of the present application, the first coil 11 is a coil that meets the Qi standard, and the second coil 13 is a coil that meets the NFC standard.

[0076] When the first transmitting coil 321 and the first receiving coil 322 are coils that meet the Qi standard, the circuit diagram of the electronic device component is as follows: Figure 10 As shown, the first receiving coil 322 of the electronic device protective cover 30 receives the power provided by the first coil 11. When the first transmitting coil 321 and the first receiving coil 322 are NFC standard coils, the circuit diagram of the electronic device component is as shown in FIG. Figure 11 As shown, the first receiving coil 322 of the electronic device protective cover 30 receives the electrical energy provided by the second coil 13 . Figure 10 and Figure 11 Schematic diagrams of circuits of the first electronic device 10, the second electronic device 20 and the electronic device protective cover 30 are shown respectively.

[0077] The coil module 32 further includes a first end ( Figure 10 or Figure 11 The coupling end "a" is represented by the second end ( Figure 10 or Figure 11 (Indicated by coupling end "b" in the figure). The first end of the first receiving coil 322 is coupled to the first end of the coil module 32, the second end of the first receiving coil 322 is coupled to the first end of the first transmitting coil 321, and the second end of the first transmitting coil 321 is coupled to the second end of the coil module 32. In other words, the first transmitting coil 321 and the first receiving coil 322 are connected in series. Furthermore, the first end of the coil module 32 may be an extension of the first end of the first receiving coil 322, and the second end of the coil module 32 may be an extension of the second end of the first transmitting coil 321.

[0078] For example, if the first receiving coil 322 is a coil that meets the Qi standard, the first receiving coil 322 can be set corresponding to the first coil 11; if the first receiving coil 322 is a coil that meets the NFC standard, the first receiving coil 322 can be set corresponding to the second coil 13.

[0079] Taking the first coil 11 and the first receiving coil 322 as an example, a circular first coil 11 is provided in the first electronic device 10, and the size of the first receiving coil 322 can be substantially the same as that of the first coil 11. For example, the diameter of the first receiving coil 322 can be 0.8 to 1.2 times the diameter of the first coil 11. By configuring the first receiving coil 322 to match the shape of the first coil 11, the wireless charging efficiency between the first receiving coil 322 and the first coil 11 can be improved.

[0080] Exemplarily, the first transmitting coil 321 can be provided in correspondence with the third coil 21. Specifically, a rectangular third coil 21 is provided in the second electronic device 20, and the dimensions of the first transmitting coil 321 can be substantially the same as those of the third coil 21. For example, the lengths of the first transmitting coil 321 along the x-axis and along the y-axis are 0.8 to 1.2 times the lengths of the third coil 21 along the x-axis and along the y-axis, respectively. By configuring the first transmitting coil 321 to match the shape of the third coil 21, the wireless charging efficiency of the first transmitting coil 321 and the third coil 21 can be improved.

[0081] Exemplarily, the first transmitting coil 321 and the first receiving coil 322 may also be configured as other shapes, for example, the first transmitting coil 321 and the first receiving coil 322 are both elliptical, etc., which is not limited in this application.

[0082] Continue to read Figure 10 or Figure 11 The charging module 33 may include a first switching circuit 331 and a first controller 332. Without the first matching circuit, the first end of the first switching circuit 331 is coupled to the first end of the coil module 32, the second end of the first switching circuit 331 is coupled to the second end of the coil module 32, and the control end of the first switching circuit 331 is coupled to the first controller 332. The first controller 332 is configured to control the first switching circuit 331 to be in an on or off state. When the first switching circuit 331 is in the on state, the coil module 32 wirelessly charges the second electronic device 20. When the first switching circuit 331 is in the off state, the coil module 32 does not wirelessly charge the second electronic device.

[0083] Continue to read Figure 10 or Figure 11 The charging module 33 may further include a first matching circuit 333. A first end of the first matching circuit 333 is coupled to a first end of the coil module 32, and a second end of the first matching circuit 333 is coupled to a second end of the coil module 32. For example, the first matching circuit 333 may be composed of a capacitor, and the first matching circuit 333 may offset the inductance of the coil module 32.

[0084] Exemplarily, the first switch circuit 331 may be composed of a field-effect transistor or a transistor. Specifically, the first switch circuit 331 may be an N-type metal oxide semiconductor (NMOS). In one possible example, the first switch circuit 331 may include two NMOS transistors, namely NMOS_1 and NMOS_2. NMOS_1 and NMOS_2 are connected in a "back-to-back" manner to ensure that positive and negative currents can be blocked when the first switch circuit 331 is turned off. The specific connection method may be: the source of NMOS_1 is connected to the source of NMOS_2, the drain of NMOS_1 is the first terminal of the first switch circuit 331, the drain of NMOS_2 is the second terminal of the first switch circuit 331, and the gates of NMOS_1 and NMOS_2 are both control terminals of the first switch circuit 331.

[0085] For example, the first receiving coil 322 can induce an induced voltage in the first magnetic field 15 generated by the first coil 11 or the second coil 13. When the first switching circuit 331 is in the on state, the first transmitting coil 321, the first receiving coil 322, the first matching circuit 333, and the first switching circuit 331 form a path. The induced voltage in the first receiving coil 322 generates an induced current that flows to the first transmitting coil 321, and the first transmitting coil 321 generates a second magnetic field 23. At this time, the third coil 21 in the second electronic device 20 generates an induced voltage in the second magnetic field 23, which charges the second electronic device 20 through the receiver 22. When the first switching circuit 331 is in the off state, the first transmitting coil 321, the first receiving coil 322, the first matching circuit 333, and the first switching circuit 331 do not form a path. No induced current flows between the first receiving coil 322 and the first transmitting coil 321. At this time, the electronic device protective cover 30 is in "hidden" mode and does not affect the charging process of the first electronic device 10.

[0086] For example, because the first transmitting coil 321 and the first receiving coil 322 are connected in series, the coil module 32 can be considered a relay coil. That is, the coil module 32 transmits the magnetic field generated by the first coil 11 or the second coil 13 in the first electronic device 10 to the third coil 21 in the second electronic device 20. This method does not change the frequency of the magnetic field, so the operating frequencies of the first coil 11, the first receiving coil 322, the first transmitting coil 321, and the third coil 21 should remain consistent, or the operating frequencies of the second coil 13, the first receiving coil 322, the first transmitting coil 321, and the third coil 21 should remain consistent. That is, since the operating frequency of the first coil 11 is 100kHz to 200kHz, the operating frequencies of the first receiving coil 322, the first transmitting coil 321, and the third coil 21 are also 100kHz to 200kHz. Furthermore, since the operating frequency of the second coil 13 is 13.56MHz, the operating frequencies of the first receiving coil 322, the first transmitting coil 321, and the third coil 21 are also 13.56MHz.

[0087] Continue to read Figure 10 or Figure 11 The charging module 33 may further include a first rectifier circuit 334 and a first voltage regulator circuit 335. A first input terminal of the first rectifier circuit 334 is coupled to the first terminal of the coil module 32, and a second input terminal of the first rectifier circuit 334 is coupled to the second terminal of the coil module 32. A first input terminal of the first voltage regulator circuit 335 is coupled to the first output terminal of the first rectifier circuit 334, a second input terminal of the first voltage regulator circuit 335 is coupled to the second output terminal of the first rectifier circuit 334, an output terminal of the first voltage regulator circuit 335 is coupled to the first controller 332, and an output terminal of the first voltage regulator circuit 335 is also coupled to the communication module 34.

[0088] For example, a weak induced current is generated in the coil module 32, and the induced current is alternating current. The first rectifier circuit 334 can convert the alternating current output by the coil module 32 into direct current by using half-wave rectification, full-wave rectification or bridge rectification.

[0089] For example, the first rectifier circuit 334 can be coupled to the coil module 32 via the first matching circuit 333. In one possible implementation, the first input terminal of the first rectifier circuit 334 is coupled to the first output terminal of the first matching circuit 333, and the second input terminal of the first rectifier circuit 334 is coupled to the second output terminal of the first matching circuit 333. In another possible implementation, the first input terminal of the first rectifier circuit 334 is coupled to the first internal coupling terminal of the first matching circuit 333, and the second input terminal of the first rectifier circuit 334 is coupled to the second internal coupling terminal of the first matching circuit 333.

[0090] Exemplarily, the first voltage stabilizing circuit 335 may be a boost circuit, a buck circuit, or a buck-boost circuit. The first voltage stabilizing circuit 335 may boost or buck the DC power output by the first rectifier circuit 334 to obtain a constant voltage.

[0091] In one embodiment, the first voltage stabilizing circuit 335 may include multiple voltage channels, such as a first voltage channel and a second voltage channel. In the first voltage channel, the first voltage stabilizing circuit 335 may convert the DC power output by the first rectifier circuit 334 into a constant first voltage, which is compatible with the supply voltage of the first controller 332. For example, the constant first voltage may be 3.3V. In the second voltage channel, the first voltage stabilizing circuit 335 may also convert the DC power output by the first rectifier circuit 334 into a constant second voltage, which is compatible with the supply voltage of the communication module 34. For example, the constant second voltage may be 1.8V.

[0092] In another embodiment, the first voltage stabilizing circuit 335 may include only one voltage channel. In this case, the power supply voltage of the first controller 332 is the same as the power supply voltage of the communication module 34. The first voltage stabilizing circuit 335 can convert the direct current output by the first rectifier circuit 334 into a constant third voltage, which can power the first controller 332 and the communication module 34 at the same time.

[0093] It is understandable that, since the power consumption of the first controller 332 and the communication module 34 is very small, the first controller 332 and the communication module 34 will not affect the charging process of the first electronic device 10 .

[0094] Optional, such as Figure 12 and Figure 13 As shown, Figure 12 This is a structural diagram of another electronic device assembly provided in an embodiment of the present application. Figure 13 A schematic structural diagram of another electronic device assembly provided in an embodiment of the present application. Figure 12 and Figure 13 , respectively, show the structures of the first electronic device 10, the second electronic device 20, and the electronic device protective cover 30, wherein the coil module 32 may include a second transmitting coil 323 and a second receiving coil 324. Figure 12 The second transmitting coil 323 and the second receiving coil 324 are coils that meet the Qi standard. Figure 13 The second transmitting coil 323 and the second receiving coil 324 in the embodiment are coils that meet the NFC standard.

[0095] When the second transmitting coil 323 and the second receiving coil 324 are Qi standard coils, the circuit diagram of the electronic device component is as follows: Figure 14As shown, the second receiving coil 324 of the electronic device protective cover 30 receives the power provided by the first coil 11. When the second transmitting coil 323 and the second receiving coil 324 are NFC standard coils, the circuit diagram of the electronic device component is as shown in FIG. Figure 15 As shown, the second receiving coil 324 of the electronic device protective cover 30 receives the electrical energy provided by the second coil 13 . Figure 14 and Figure 15 Schematic diagrams of circuits of the first electronic device 10, the second electronic device 20 and the electronic device protective cover 30 are shown respectively.

[0096] The coil module 32 may further include a third end ( Figure 14 or Figure 15 In the figure, the coupling end "c" indicates that the fourth end ( Figure 14 or Figure 15 In the figure, the coupling end "d" indicates the fifth end ( Figure 14 or Figure 15 The coupling end "e" represents the sixth end ( Figure 14 or Figure 15 (Indicated by coupling end "f" in the figure). The first end of the second receiving coil 324 is coupled to the third end of the coil module 32, the second end of the second receiving coil 324 is coupled to the fourth end of the coil module 32, the first end of the second transmitting coil 323 is coupled to the fifth end of the coil module 32, and the second end of the second transmitting coil 323 is coupled to the sixth end of the coil module 32. Furthermore, the third end of the coil module 32 may be an extension of the first end of the second receiving coil 324, the fourth end of the coil module 32 may be an extension of the second end of the second receiving coil 324, the fifth end of the coil module 32 may be an extension of the first end of the second transmitting coil 323, and the sixth end of the coil module 32 may be an extension of the second end of the second transmitting coil 323.

[0097] For example, if the second receiving coil 324 is a coil that meets the Qi standard, the second receiving coil 324 can be set corresponding to the first coil 11. If the second receiving coil 324 is a coil that meets the NFC standard, the second receiving coil 324 can be set corresponding to the second coil 13.

[0098] Taking the first coil 11 and the second receiving coil 324 as an example, a circular first coil 11 is provided in the first electronic device 10, and the size of the second receiving coil 324 can be substantially the same as that of the first coil 11. For example, the diameter of the second receiving coil 324 can be 0.8 to 1.2 times the diameter of the first coil 11. By configuring the second receiving coil 324 to match the shape of the first coil 11, the wireless charging efficiency between the second receiving coil 324 and the first coil 11 can be improved.

[0099] Exemplarily, the second transmitting coil 323 can be configured to correspond to the third coil 21. Specifically, a rectangular third coil 21 is provided in the second electronic device 20, and the dimensions of the second transmitting coil 323 can be substantially the same as those of the third coil 21. For example, the length of the second transmitting coil 323 along the x-axis and along the y-axis are 0.8 to 1.2 times the length of the third coil 21 along the x-axis and along the y-axis, respectively. By configuring the second transmitting coil 323 to match the shape of the third coil 21, the wireless charging efficiency of the second transmitting coil 323 and the third coil 21 can be improved.

[0100] Exemplarily, the second transmitting coil 323 and the second receiving coil 324 may also be configured as other shapes. For example, the second transmitting coil 323 and the second receiving coil 324 are both elliptical, etc., which is not limited in this application.

[0101] Optional, see Figure 14 or Figure 15 The charging module 33 may include a second rectifier circuit 336, a second switch circuit 337, a first transmitter 338, and a second controller 339. A first input terminal of the second rectifier circuit 336 is coupled to the third terminal of the coil module 32, and a second input terminal of the second rectifier circuit 336 is coupled to the fourth terminal of the coil module 32. A first terminal of the second switch circuit 337 is coupled to a first output terminal of the second rectifier circuit 336, a second terminal of the second switch circuit 337 is coupled to a first input terminal of the first transmitter 338, a second input terminal of the first transmitter 338 is coupled to a second output terminal of the second rectifier circuit 336, and a control terminal of the second switch circuit 337 is coupled to the second controller 339. A first output terminal of the first transmitter 338 is coupled to the fifth terminal of the coil module 32, and a second output terminal of the first transmitter 338 is coupled to the sixth terminal of the coil module 32.

[0102] The second controller 339 is configured to control the second switch circuit 337 to be in an on or off state. When the second switch circuit 337 is in the on state, the coil module 32 wirelessly charges the second electronic device 20. When the second switch circuit 337 is in the off state, the coil module 32 does not wirelessly charge the second electronic device 20. The charging module 33 may further include a second matching circuit 3310, wherein a first end of the second matching circuit 3310 is coupled to a third end of the coil module 32, and a second end of the second matching circuit 3310 is coupled to a fourth end of the coil module 32.

[0103] Exemplarily, the second switch circuit 337 may also be composed of a field effect transistor or a transistor. Specifically, the second switch circuit 337 may also be an NMOS. The circuit structure of the second switch circuit 337 may be the same as the circuit structure of the first switch circuit 331 .

[0104] Exemplarily, the second matching circuit 3310 may be composed of capacitors, and the second matching circuit 3310 may offset the inductance in the coil module 32 .

[0105] Exemplarily, the second receiving coil 324 can induce an induced voltage in the first magnetic field 15 generated by the first coil 11 or the second coil 13. When the second switching circuit 337 is in the on state, the second receiving coil 324, the second matching circuit 3310, the second rectifier circuit 336, the second switching circuit 337, and the first transmitter 338 form a path. The induced voltage of the second receiving coil 324 is AC. The second rectifier circuit 336 can convert this AC into DC using half-wave rectification, full-wave rectification, or bridge rectification. The first transmitter 338 can drive the second transmitting coil 323 based on the DC power to generate the induced voltage. At this time, the third coil 21 in the second electronic device 20 generates an induced voltage through the second magnetic field 23, and the second electronic device 20 is charged through the receiver 22. When the second switch circuit 337 is in the off state, the second receiving coil 324, the second matching circuit 3310, the second rectifier circuit 336, the second switch circuit 337 and the first transmitter 338 cannot form a circuit, and no induced voltage is generated in the second transmitting coil 323. At this time, the electronic device protective cover 30 is in the "hidden" mode and will not affect the charging process of the first electronic device 10.

[0106] For example, since the second transmitting coil 323 and the second receiving coil 324 are not directly electrically connected, the operating frequency of the first transmitter 338 can be different from the frequency of the first coil 11 or the second coil 13 in the first electronic device 10. The first transmitter 338 can drive the second transmitting coil 323 to generate a magnetic field of a new frequency. As a result, the operating frequencies of the first coil 11 and the second receiving coil 324 can be the same, the operating frequencies of the second coil 13 and the second receiving coil 324 can be the same, the power frequencies of the second transmitting coil 323 and the third coil 21 can be the same, and the operating frequencies of the second receiving coil 324 and the second transmitting coil 323 can be the same or different. For example, if the first coil 11 in the first electronic device 10 generates a magnetic field, the operating frequency of the second electronic device 20 can be 6.78 MHz or 13.56 MHz. If the second coil 13 in the first electronic device 10 generates a magnetic field, the operating frequency of the second electronic device 20 can be 87 kHz to 205 kHz or 6.78 MHz.

[0107] Optional, see Figure 14 or Figure 15The charging module 33 also includes a second voltage stabilizing circuit 3311, a first input end of the second voltage stabilizing circuit 3311 is coupled to a first output end of the second rectifier circuit 336, a second input end of the second voltage stabilizing circuit 3311 is coupled to a second output end of the second rectifier circuit 336, an output end of the second voltage stabilizing circuit 3311 is coupled to the second controller 339, and an output end of the second voltage stabilizing circuit 3311 is also coupled to the communication module 34.

[0108] Exemplarily, the second voltage stabilizing circuit 3311 may be a boost circuit, a buck circuit, or a buck-boost circuit. The second voltage stabilizing circuit 3311 may boost or buck the DC power output by the second rectifier circuit 336 to obtain a constant voltage.

[0109] Exemplarily, the structure of the second voltage stabilizing circuit 3311 is identical to that of the first voltage stabilizing circuit 335 described above and will not be further described herein. It will be appreciated that the second voltage stabilizing circuit 3311 can simultaneously provide a constant supply voltage for the second controller 339 and the communication module 34. Furthermore, the power consumption of the second controller 339 and the communication module 34 is minimal, and the second controller 339 and the communication module 34 will not affect the charging process of the first electronic device 10.

[0110] Thus, in the electronic device protective case 30 described above, when the first electronic device 10 is located in the first storage portion 311 and the second electronic device 20 is located in the second storage portion 312, the coil module 32 receives power from the first electronic device 10 via wireless charging. The coil module 32 also wirelessly charges the second electronic device 20 based on the power provided by the first electronic device 10. The charging module 33 controls whether the coil module 32 wirelessly charges the second electronic device 20, and the communication module 34 transmits the received power information of the electronic device protective case 30 to the first electronic device 10. In other words, the first electronic device 10 wirelessly charges the electronic device protective case 30, and the electronic device protective case 30 wirelessly charges the second electronic device 20. Since the first electronic device 10 is portable, this improves the convenience of charging the second electronic device 20. Furthermore, the electronic device protective case 30 reports the received power information to the first electronic device 10, preventing the electronic device protective case 30 from being identified as a foreign object, or preventing both the electronic device protective case 30 and the second electronic device 20 from being identified as foreign objects, thereby improving the applicability of the electronic device protective case 30.

[0111] Optionally, an embodiment of the present application provides a wireless charging system, such as Figure 16 As shown, Figure 16This is a circuit diagram of a wireless charging system provided in an embodiment of the present application. The wireless charging system may include a first electronic device 10, a second electronic device 20, an electronic device protective cover 30, and a wireless charging base 40. The wireless charging base 40 may include a fourth coil 41 and a second transmitter 42, and the electronic device protective cover 30 includes a first storage portion and a second storage portion.

[0112] Specifically, when the first electronic device 10 is located in the first storage portion and the second electronic device 20 is located in the second storage portion, and the electronic device protective cover 30 is located on the wireless charging base 40, the electronic device protective cover 30 is used to send first receiving power information to the first electronic device 10. The first electronic device 10 is used to receive the first receiving power information of the electronic device protective cover 30 and send second receiving power information to the wireless charging base 40, where the second receiving power information includes the receiving power information of the first electronic device 10 and the first receiving power information. The wireless charging base 40 is used to obtain the foreign object loss power based on the second receiving power information and the transmission power information of the wireless charging base 40, stop supplying power to the first electronic device 10 when the foreign object loss power is greater than a preset threshold, and continue supplying power to the first electronic device 10 when the foreign object loss power is less than or equal to the preset threshold.

[0113] For example, when the first electronic device 10, the second electronic device 20 and the electronic device protective cover 30 are all located on the wireless charging base 40, the first electronic device 10 is located in the first storage portion 311 and the second electronic device 20 is located in the second storage portion 312, the wireless charging base 40 can wirelessly charge the first electronic device 10, the wireless charging base 40 can also wirelessly charge the electronic device protective cover 30, and the electronic device protective cover 30 can wirelessly charge the second electronic device 20.

[0114] For example, when the first electronic device 10, the second electronic device 20 and the electronic device protective cover 30 are all placed on the wireless charging base 40, the communication module of the electronic device protective cover 30 sends a first receiving power P to the first electronic device 10. r1 Information. It can be understood that due to the provisions of the wireless charging standard (such as the Qi standard), the wireless charging base 40 can receive the receiving power information of an electronic device. Therefore, in order to improve the applicability of the electronic device protective cover 30 provided in the embodiment of the present application, the electronic device protective cover 30 sends the first receiving power information to the first electronic device 10, and then the first electronic device 10 sends the second receiving power information to the wireless charging base 40, wherein the second receiving power information includes the receiving power information of the first electronic device 10 and the first receiving power information, that is, the second receiving power is P r0 +P r1Therefore, the wireless charging base 40 also only receives the second receiving power information sent by the first electronic device 10 , which meets the wireless charging standard and improves the applicability of the electronic device protective cover 30 .

[0115] Optionally, the electronic device protective cover 30 further includes a coil module 32 and a charging module 33, the coil module 32 includes a first transmitting coil 321 and a first receiving coil 322, the first end of the first receiving coil 322 is coupled to the first end of the charging module 33, the second end of the first receiving coil 322 is coupled to the first end of the first transmitting coil 321, and the second end of the first transmitting coil 321 is coupled to the second end of the charging module 33.

[0116] For example, the first transmitting coil 321 and the first receiving coil 322 are connected in series, and the coil module 32 can be considered a relay coil. In other words, the coil module 32 transmits the magnetic field generated by the coil of the first electronic device 10 to the coil of the second electronic device 20. This method does not change the frequency of the magnetic field, so the operating frequencies of the first transmitting coil 321, the first receiving coil 322, the coils in the first electronic device 10, and the coils in the second electronic device 20 should remain consistent. In other words, the electronic device protective case 30 uses the same frequency scheme to wirelessly charge the second electronic device 20.

[0117] Optionally, the electronic device protective cover 30 further includes a coil module 32 and a charging module 33, the coil module 32 includes a second transmitting coil 323 and a second receiving coil 324, the first end of the second receiving coil 324 is coupled to the first end of the charging module 33, the second end of the second receiving coil 324 is coupled to the second end of the charging module 33, the first end of the second transmitting coil 323 is coupled to the third end of the charging module 33, and the second end of the second transmitting coil 323 is coupled to the fourth end of the charging module 33.

[0118] For example, the second transmitting coil 323 and the second receiving coil 324 are not directly electrically connected. The operating frequency of the second transmitting coil 323 and the operating frequency of the second receiving coil 324 can be the same, or the operating frequency of the second transmitting coil 323 and the operating frequency of the second receiving coil 324 can be different. This approach can change the magnetic field frequency of the first electronic device 10, that is, the electronic device protective cover 30 can use a different frequency solution to wirelessly charge the second electronic device 20.

[0119] Applied to the above wireless charging system, such as Figure 17 As shown, Figure 17 A flowchart of another wireless charging method provided in an embodiment of the present application, when a first electronic device is located in a first storage portion and a second electronic device is located in a second storage portion, and a protective cover of the electronic device is located on the wireless charging base, the method includes S1701 to S1703.

[0120] S1701: The electronic device protective cover sends first receiving power information to the first electronic device.

[0121] S1702: The first electronic device receives first received power information from the electronic device protective cover, and sends second received power information to the wireless charging base, where the second received power information includes the received power information of the first electronic device and the first received power information.

[0122] S1703. The wireless charging base obtains a foreign object loss power based on the second received power information and the transmit power information of the wireless charging base. When the foreign object loss power is greater than a preset threshold, the wireless charging base stops providing power to the first electronic device. When the foreign object loss power is less than or equal to the preset threshold, the wireless charging base continues to provide power to the first electronic device.

[0123] For example, the first electronic device can be a portable device such as a mobile phone or tablet, and the second electronic device can be an accessory such as an electronic pen. Thus, the electronic device protective cover can draw power from the portable first electronic device to wirelessly charge the second electronic device, thereby improving the convenience of charging the second electronic device. Furthermore, the electronic device protective cover can transmit received power information to the first electronic device, thereby preventing the electronic device protective cover from being identified as a foreign object, or preventing both the electronic device protective cover and the second electronic device from being identified as foreign objects, which could affect the wireless charging of the first electronic device, thereby improving the applicability of the electronic device protective cover.

[0124] Specifically, the flow chart of the wireless charging method can be as follows: Figure 18 As shown, the method includes S1801 to S1809.

[0125] S1801: The wireless charging base sends a Ping signal.

[0126] For example, a ping signal is a signal sent by a wireless charging transmitter to detect the presence of a wireless charging receiver. After the wireless charging base is powered on, it will send a ping signal at a preset time interval, which can be set by a person skilled in the art.

[0127] S1802: The first electronic device recognizes the Ping signal, switches to a wireless charging mode, and communicates with the wireless charging base.

[0128] Exemplarily, when the first electronic device recognizes the Ping signal, the transceiver in the first electronic device enters the wireless charging mode and performs a handshake with the wireless charging base, that is, performs information exchange with the wireless charging base.

[0129] S1803: The wireless charging base turns on wireless charging.

[0130] Exemplarily, after the first electronic device and the wireless charging base complete handshake, the wireless charging base starts wireless charging and generates a wireless charging magnetic field.

[0131] S1804: The first electronic device and the electronic device protective cover simultaneously receive transmission power from the wireless charging base.

[0132] Exemplarily, the receiving coils in the first electronic device and the electronic device protective cover both generate induced voltages and obtain charging power from the wireless charging magnetic field generated by the wireless charging base to provide power to subsequent circuits.

[0133] S1805: The electronic device protective cover wirelessly charges the second electronic device and sends first received power information to the first electronic device.

[0134] For example, the first electronic device obtains the received power P according to the battery charging requirement. r0 The electronic device protective cover obtains the first received power P according to the charging requirement of the second electronic device. r1 , and the first received power P r1 The information is reported to the first electronic device through the communication module.

[0135] S1806: The first electronic device sends second received power information to the wireless charging base, where the second received power information includes the received power information of the first electronic device and the first received power information.

[0136] For example, the first electronic device receives the first receiving power P r1 After the information is r1 and its own received power P r0 The information of the second receiving power is reported to the wireless charging base, that is, the second receiving power information is reported to the wireless charging base. The second receiving power can be expressed as: P r0 +P r1 .

[0137] S1807: Is the difference between the wireless charging base's transmit power and the second receive power greater than a preset threshold? If the difference between the wireless charging base's transmit power and the second receive power is greater than the preset threshold, execute S1808; if the difference between the wireless charging base's transmit power and the second receive power is less than or equal to the preset threshold, execute S1809.

[0138] For example, the preset threshold value may be a given foreign object power loss The transmission power of the wireless charging base is P t , that is, if That is, the estimated foreign object power loss is too large, wireless charging should be stopped and the foreign object protection should be activated. That is, if the estimated foreign object power loss is small, wireless charging can continue.

[0139] S1808: The wireless charging base interrupts wireless charging and enters the foreign object protection mode.

[0140] S1809. The wireless charging base continues wireless charging.

[0141] An embodiment of the present application provides an electronic device assembly, comprising a second electronic device and an electronic device protective cover, wherein the electronic device protective cover comprises a first receiving portion and a second receiving portion. When the first electronic device is located in the first receiving portion and the second electronic device is located in the second receiving portion, the first electronic device is configured to provide power to a coil module of the electronic device protective cover in a wireless charging manner, and the electronic device protective cover is configured to wirelessly charge the second electronic device using the power provided by the first electronic device.

[0142] An embodiment of the present application provides an electronic device assembly, comprising a first electronic device, a second electronic device, and an electronic device protective case, wherein the electronic device protective case comprises a first receiving portion and a second receiving portion. When the first electronic device is located in the first receiving portion and the second electronic device is located in the second receiving portion, the first electronic device is configured to provide power to a coil module of the electronic device protective case in a wireless charging manner, and the electronic device protective case is configured to wirelessly charge the second electronic device using the power provided by the first electronic device.

[0143] An embodiment of the present application further provides a computer storage medium, which stores computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the above-mentioned related method steps to implement the wireless charging method in the above-mentioned embodiment.

[0144] An embodiment of the present application further provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement the wireless charging method performed by the electronic device in the above-mentioned embodiment.

[0145] In addition, an embodiment of the present application also provides a device, which can specifically be a chip, component or module, and the device may include a connected processor and memory; wherein the memory is used to store computer-executable instructions, and when the device is running, the processor can execute the computer-executable instructions stored in the memory to enable the chip to execute the wireless charging method performed by the electronic device in the above-mentioned method embodiments.

[0146] Among them, the electronic device protective cover, electronic device component, wireless charging system, computer storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0147] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0148] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0149] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0150] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0151] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0152] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A protective cover for an electronic device, characterized in that: It includes: a shell, and a coil module, a charging module and a communication module arranged on the shell; The housing further includes a first receiving portion and a second receiving portion. When a first electronic device is located in the first receiving portion and a second electronic device is located in the second receiving portion, the coil module is configured to obtain power provided by the first electronic device in a wireless charging manner, and the coil module is further configured to wirelessly charge the second electronic device based on the power provided by the first electronic device. The charging module is used to control whether the coil module wirelessly charges the second electronic device; The communication module is configured to send the received power information of the electronic device protective cover to the first electronic device.

2. The electronic device protective cover according to claim 1, wherein: The coil module includes a first transmitting coil, a first receiving coil, a first end and a second end; A first end of the first receiving coil is coupled to a first end of the coil module, a second end of the first receiving coil is coupled to a first end of the first transmitting coil, and a second end of the first transmitting coil is coupled to a second end of the coil module.

3. The electronic device protective cover according to claim 2, wherein: The charging module includes a first switch circuit and a first controller; A first end of the first switch circuit is coupled to a first end of the coil module, a second end of the first switch circuit is coupled to a second end of the coil module, and a control end of the first switch circuit is coupled to the first controller; The first controller is used to control the first switch circuit to be in an on state or an off state; When the first switch circuit is in an on state, the coil module wirelessly charges the second electronic device; when the first switch circuit is in an off state, the coil module does not wirelessly charge the second electronic device.

4. The electronic device protective cover according to claim 3, wherein: The charging module further includes a first rectifier circuit and a first voltage stabilizing circuit; The first input end of the first rectifier circuit is coupled to the first end of the coil module, and the second input end of the first rectifier circuit is coupled to the second end of the coil module; The first input end of the first voltage stabilizing circuit is coupled to the first output end of the first rectifier circuit, the second input end of the first voltage stabilizing circuit is coupled to the second output end of the first rectifier circuit, the output end of the first voltage stabilizing circuit is coupled to the first controller, and the output end of the first voltage stabilizing circuit is also coupled to the communication module.

5. The electronic device protective cover according to claim 4, characterized in that: The charging module further includes a first matching circuit; A first end of the first matching circuit is coupled to a first end of the coil module, and a second end of the first matching circuit is coupled to a second end of the coil module.

6. The electronic device protective cover according to claim 1, wherein: The coil module includes a second transmitting coil, a second receiving coil, a third end, a fourth end, a fifth end and a sixth end; A first end of the second receiving coil is coupled to a third end of the coil module, a second end of the second receiving coil is coupled to a fourth end of the coil module, a first end of the second transmitting coil is coupled to a fifth end of the coil module, and a second end of the second transmitting coil is coupled to a sixth end of the coil module.

7. The electronic device protective cover according to claim 6, wherein: The charging module includes a second rectifier circuit, a second switch circuit, a first transmitter and a second controller; The first input terminal of the second rectifier circuit is coupled to the third terminal of the coil module, and the second input terminal of the second rectifier circuit is coupled to the fourth terminal of the coil module; A first terminal of the second switch circuit is coupled to a first output terminal of the second rectifier circuit, a second terminal of the second switch circuit is coupled to a first input terminal of the first transmitter, a second input terminal of the first transmitter is coupled to a second output terminal of the second rectifier circuit, and a control terminal of the second switch circuit is coupled to the second controller; The first output terminal of the first transmitter is coupled to the fifth terminal of the coil module, and the second output terminal of the first transmitter is coupled to the sixth terminal of the coil module; The second controller is used to control the second switch circuit to be in an on state or an off state; When the second switch circuit is in an on state, the coil module wirelessly charges the second electronic device; when the second switch circuit is in an off state, the coil module does not wirelessly charge the second electronic device.

8. The electronic device protective cover according to claim 7, wherein: The charging module further includes a second voltage stabilizing circuit; The first input end of the second voltage stabilizing circuit is coupled to the first output end of the second rectifier circuit, the second input end of the second voltage stabilizing circuit is coupled to the second output end of the second rectifier circuit, the output end of the second voltage stabilizing circuit is coupled to the second controller, and the output end of the second voltage stabilizing circuit is also coupled to the communication module.

9. The electronic device protective cover according to claim 8, wherein: The charging module further includes a second matching circuit; A first end of the second matching circuit is coupled to a third end of the coil module, and a second end of the second matching circuit is coupled to a fourth end of the coil module.

10. The electronic device protective cover according to any one of claims 2 to 9, characterized in that: The first transmitting coil or the second transmitting coil is a coil that meets the Qi standard or the NFC standard, and the first receiving coil or the second receiving coil is a coil that meets the Qi standard or the NFC standard.

11. An electronic device assembly, characterized in that: comprising a second electronic device and the electronic device protective cover according to any one of claims 1 to 10, wherein the electronic device protective cover comprises a first receiving portion and a second receiving portion; The first storage portion is used to accommodate a first electronic device. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the first electronic device provides power to the coil module of the electronic device protective cover in a wireless charging manner. The electronic device protective cover is used to wirelessly charge the second electronic device based on the power provided by the first electronic device.

12. An electronic device assembly, characterized in that: The electronic device protective cover comprises a first electronic device, a second electronic device, and the electronic device protective cover according to any one of claims 1 to 10, wherein the electronic device protective cover comprises a first receiving portion and a second receiving portion; When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, the first electronic device is used to provide power to the coil module of the electronic device protective cover in a wireless charging manner. The electronic device protective cover is used to wirelessly charge the second electronic device according to the power provided by the first electronic device.

13. A wireless charging system, characterized in that: include: A wireless charging base, a first electronic device, a second electronic device, and an electronic device protective cover, wherein the electronic device protective cover includes a first receiving portion and a second receiving portion; When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, and the electronic device protective cover is located on the wireless charging base, The electronic device protective cover is configured to send first received power information to the first electronic device; The first electronic device is configured to receive first received power information of the electronic device protective cover and send second received power information to the wireless charging base, where the second received power information includes the received power information of the first electronic device and the first received power information; The wireless charging base is configured to obtain foreign object loss power based on the second receiving power information and the transmitting power information of the wireless charging base; When the foreign object power loss is greater than a preset threshold, supplying power to the first electronic device is stopped; and when the foreign object power loss is less than or equal to the preset threshold, supplying power to the first electronic device is continued.

14. The wireless charging system according to claim 13, wherein: The electronic device protective cover also includes a coil module and a charging module. The coil module includes a first transmitting coil and a first receiving coil. The first end of the first receiving coil is coupled to the first end of the charging module, the second end of the first receiving coil is coupled to the first end of the first transmitting coil, and the second end of the first transmitting coil is coupled to the second end of the charging module.

15. The wireless charging system according to claim 13, wherein: The electronic device protective cover also includes a coil module and a charging module. The coil module includes a second transmitting coil and a second receiving coil. The first end of the second receiving coil is coupled to the first end of the charging module, the second end of the second receiving coil is coupled to the second end of the charging module, the first end of the second transmitting coil is coupled to the third end of the charging module, and the second end of the second transmitting coil is coupled to the fourth end of the charging module.

16. A wireless charging method, characterized in that: The method is applied to a wireless charging system, which includes a wireless charging base, a first electronic device, a second electronic device, and an electronic device protective cover, wherein the electronic device protective cover includes a first storage portion and a second storage portion. When the first electronic device is located in the first storage portion and the second electronic device is located in the second storage portion, and the electronic device protective cover is located on the wireless charging base, the method includes: The electronic device protective cover sends first receiving power information to the first electronic device; The first electronic device receives the first received power information of the electronic device protective cover, and sends second received power information to the wireless charging base, where the second received power information includes the received power information of the first electronic device and the first received power information; The wireless charging base obtains foreign object loss power based on the second receiving power information and the transmitting power information of the wireless charging base; When the power loss of the foreign object is greater than a preset threshold, the wireless charging base stops providing power to the first electronic device, and When the power loss of the foreign object is less than or equal to a preset threshold, the wireless charging base continues to provide power to the first electronic device.

Images