Protective shell, protective shell assembly, wireless charging system and charging control method

Abstract

The embodiment of the invention provides a protective shell which is used for being arranged on electronic equipment in a sleeving mode and comprises an accommodating structure and a coupling coil. The accommodating structure is used for accommodating a functional device; the coupling coil is used for being electrically connected with the functional equipment when the functional equipment is accommodated in the accommodating structure, and the coupling coil is also used for receiving alternating-current electric energy to charge the functional equipment when the coupling coil is coupled with a transmitting coil and the transmitting coil transmits the alternating-current electric energy. The invention further provides a protective shell assembly, a wireless charging system and a charging control method. The functional equipment can be conveniently charged through the protective shell, and the functional equipment is accommodated in the accommodating structure of the protective shell, so that the functional equipment is convenient to carry.

Description

Technical Field

[0001] The present application relates to the field of mobile terminals, and in particular to a protective case, a protective case assembly, and a charging control method. Background Art

[0002] Currently, to protect electronic devices such as mobile phones and tablets from damage caused by collisions, users generally use additional protective cases to protect them. Currently, to further enhance the user experience of electronic devices, electronic devices are equipped with corresponding functional accessories / functional devices, such as styluses and voice recorders. However, these current functional accessories often require separate chargers for charging, which is inconvenient. Summary of the Invention

[0003] The present application provides a protective case, a protective case assembly, a wireless charging system and a charging control method to solve the above problems.

[0004] In a first aspect, a protective case is provided for being mounted on an electronic device. The protective case includes a housing structure and a coupling coil. The housing structure is configured to house a functional device. The coupling coil is configured to electrically connect to the functional device when the functional device is housed in the housing structure. The coupling coil is configured to receive AC power when coupled to a transmitting coil and when the transmitting coil transmits AC power, thereby charging the functional device.

[0005] In a second aspect, a protective case assembly is also provided, comprising a protective case and a functional device housed within a housing structure of the protective case. The protective case is configured to be mounted on an electronic device, and includes a housing structure and a coupling coil. The housing structure houses a functional device. The coupling coil is configured to electrically connect to the functional device when the housing structure houses the functional device. The coupling coil is configured to receive AC power when coupled to a transmitting coil and when the transmitting coil transmits AC power, thereby charging the functional device.

[0006] In a third aspect, a wireless charging system is also provided, which includes an electronic device and a protective shell assembly, wherein the protective shell assembly includes a protective shell and a functional device accommodated in a receiving structure of the protective shell. The protective shell of the protective shell assembly is used to be mounted on the electronic device, and the electronic device has a wireless charging function. The protective shell includes a receiving structure and a coupling coil, wherein the receiving structure is used to accommodate a functional device; the coupling coil is used to electrically connect to the functional device when the functional device is accommodated in the receiving structure, and the coupling coil is used to couple with a transmitting coil, and when the transmitting coil transmits alternating current energy, receive the alternating current energy for charging the functional device.

[0007] In a fourth aspect, a charging control method is also provided, which is applied to at least a protective shell assembly, wherein the protective shell assembly includes a protective shell, and also includes a functional device for being accommodated in the accommodating structure of the protective shell, the protective shell includes a coupling coil, and the protective shell or the functional device includes a charging management module. The charging control method includes: when the coupling coil receives the AC power transmitted by the transmitting coil, the charging management module delays for a preset period of time to communicate with the device where the transmitting coil is located.

[0008] The protective case, protective case assembly, wireless charging system, and charging control method of the present application can accommodate a functional device by providing a housing structure on the protective case. The protective case also includes a coupling coil that can be coupled with a transmitting coil. When the functional device is accommodated in the housing structure and the transmitting coil transmits AC power, the AC power is received to charge the functional device. Therefore, there is no need to prepare an additional charger for the functional device, which facilitates charging the functional device. The functional device is accommodated in the housing structure of the protective case, which also facilitates carrying the functional device. The charging control method can also avoid affecting the normal charging of the electronic device and the communication of other electronic devices during the reverse charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0010] Figure 1 This is a simple schematic diagram of a protective case in some embodiments of the present application.

[0011] Figure 2 This is a further structural schematic diagram of the protective shell in some embodiments of the present application.

[0012] Figure 3 This is a structural block diagram of the protective shell assembly in some embodiments of the present application.

[0013] Figure 4 This is another structural schematic diagram of the protective shell in some embodiments of the present application.

[0014] Figure 5 This is a further structural schematic diagram of the protective shell in some embodiments of the present application.

[0015] Figure 6 This is another structural block diagram of the protective shell assembly in some embodiments of the present application.

[0016] Figure 7 This is another further structural schematic diagram of the protective shell in some embodiments of the present application.

[0017] Figure 8 This is another structural block diagram of the protective shell assembly in some embodiments of the present application.

[0018] Figure 9 This is a schematic structural diagram of the protective shell assembly in some embodiments of the present application.

[0019] Figure 10 This is another structural schematic diagram of the protective shell assembly in some embodiments of the present application.

[0020] Figure 11 This is a structural block diagram of a wireless charging system in some embodiments of the present application.

[0021] Figure 12 This is a circuit block diagram of a wireless charging system in some embodiments of the present application.

[0022] Figure 13 FIG. 4 is another circuit block diagram of a wireless charging system in some embodiments of the present application.

[0023] Figure 14 This is another structural block diagram of a wireless charging system in some embodiments of the present application.

[0024] Figure 15 This is another circuit block diagram of a wireless charging system in some embodiments of the present application.

[0025] Figure 16 FIG. 4 is another circuit block diagram of a wireless charging system in some embodiments of the present application.

[0026] Figure 17 This is another structural block diagram of the wireless charging system in some embodiments of the present application.

[0027] Figure 18 This is a flow chart of a charging control method in some embodiments of the present application. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not imply or indicate that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. The term "connection" in this application may include physical connection, electrical connection, direct connection, indirect connection, coupled connection, etc. In the description of the embodiments of the present invention, the terms "first," "second," etc. are not specific but are used to distinguish objects with the same name. Where the specification clearly states otherwise, the objects with the same name referred to by the terms "first," "second," etc. may be the same object. In this application, "A" and / or "B" include three relationships: "A" only, "B" only, and both "A" and "B." In this application, "A" / "B" refers to either "A" or "B."

[0030] See also Figure 1 , is a simple schematic diagram of a protective case 1 in some embodiments of the present application. The protective case 1 is used to be mounted on an electronic device and includes a housing structure 11 and a coupling coil 12. The housing structure 11 is used to accommodate a functional device. The coupling coil 12 is used to electrically connect to the functional device when the functional device is accommodated in the housing structure 11. The coupling coil 12 is also used to couple with a transmitting coil Q1, and when the transmitting coil Q1 transmits AC power, it receives the AC power to charge the functional device.

[0031] Therefore, in the present application, the functional device can be accommodated by providing an accommodating structure on the protective shell 1, and the protective shell 1 also includes a coupling coil 12, which can be coupled with the transmitting coil Q1, and the functional device can be accommodated in the accommodating structure 11. When the transmitting coil Q1 transmits AC power, the AC power is received to charge the functional device. Therefore, there is no need to prepare an additional charger for the functional device, which facilitates the charging of the functional device. The functional device is accommodated in the accommodating structure of the protective shell 1, which also facilitates the carrying of the functional device.

[0032] The AC power transmitted by the transmitting coil Q1 is also called wireless power. The coupling coil 12 is coupled with the transmitting coil and can receive the AC power transmitted by the transmitting coil in a wireless manner.

[0033] In this application, the transmitting coil Q1 refers to a coil that transmits wireless energy / AC power, and the transmitting coil Q1 can be a coil in a device with a wireless charging function that can play the role of transmitting AC power. For example, when the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, the transmitting coil Q1 includes the charging coil of the electronic device, that is, when the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, the coupling coil 12 can be coupled with the charging coil of the electronic device, and the electronic device can transmit wireless energy, that is, AC power, to the outside through the charging coil by turning on the reverse charging function, and the wireless energy is received by the coupling coil 12. For another example, when the protective case 1 is placed on a wireless charging stand, the transmitting coil Q1 can also include the transmitting coil of the wireless charging stand, that is, the coupling coil 12 can be coupled with the transmitting coil of the wireless charging stand and receive the wireless energy transmitted by the transmitting coil of the wireless charging stand. For another example, when the protective case 1 is placed on the electronic device and the electronic device has a wireless charging function, and the protective case 1 is also placed on a wireless charging stand, then since the electronic device is also charged, the transmitting coil Q1 may include the transmitting coil of the wireless charging stand. Figure 1 Only the transmitting coil Q1 is briefly shown in FIG.

[0034] Thus, through the protective case 1 of the present application, when the protective case 1 containing a functional device is placed on the electronic device and the electronic device has a wireless charging function, the functional device contained in the protective case 1 can be charged by turning on the reverse charging function of the electronic device, which is convenient and fast. When the protective case 1 containing a functional device is placed on a wireless charging stand, the functional device contained in the protective case 1 can also be charged through the wireless charging stand, which is suitable for a variety of scenarios.

[0035] In some embodiments, the functional device may include a stylus, a Bluetooth headset, a detachable flash, a detachable action camera, a detachable voice recorder, etc. In the drawings of this application, the functional device is mainly illustrated as a stylus.

[0036] In this application, the coupling coil 12 and the transmitting coil Q1 are coupled, which may mean that the coupling coil 12 is substantially parallel to the transmitting coil Q1 and at least partially faces the transmitting coil Q1, and the projection of the coupling coil 12 on the plane where the transmitting coil Q1 is located at least partially overlaps with the transmitting coil Q1.

[0037] In some embodiments, the coupling coil 12 is substantially parallel to and substantially opposite the transmitting coil Q1. The projection of the coupling coil 12 on the plane where the transmitting coil Q1 is located substantially overlaps with the transmitting coil Q1. This effectively improves the coupling degree between the coupling coil 12 and the transmitting coil Q1 and improves the transmission efficiency of AC power.

[0038] For example, when the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, and the transmitting coil Q1 includes the charging coil of the electronic device, the coupling coil 12 can be approximately parallel to and approximately opposite to the charging coil of the electronic device, that is, the transmitting coil Q1, and the projection of the coupling coil 12 on the plane where the transmitting coil Q1 is located approximately overlaps with the transmitting coil Q1.

[0039] The coupling coil 12 may include multiple turns of coils located in the same plane. For example, it may be formed by winding multiple turns of a conductive wire in the same plane. Figure 1 The transmitting coil Q1 may also include multiple turns of coils located in the same plane. For example, it may be formed by winding multiple turns of a conductive wire in the same plane. Figure 1 A coil with one turn is also used as an example to illustrate this.

[0040] Please also refer to Figure 2 and Figure 3 , Figure 2 This is a further structural diagram of the protective shell 1 in some embodiments of the present application. Figure 3 This is a structural block diagram of the protective shell assembly 100 in some embodiments of the present application.

[0041] In some embodiments, as Figure 2 As shown, the coupling coil 12 includes a first end 12a and a second end 12b. Figure 3 As shown, the protective shell assembly 100 may include the protective shell 1 and a functional device 2 for being accommodated in the accommodating structure 11 of the protective shell 1. The functional device 2 includes two charging terminals P11 and P12. When the functional device 2 is accommodated in the accommodating structure 11, the first end 12a and the second end 12b of the coupling coil 12 are electrically connected to the two charging terminals P11 and P12 of the functional device 2, respectively. When receiving the AC power transmitted by the transmitting coil Q1, the coupling coil 12 inputs the AC power into the functional device 2 through the first end 12a, the second end 12b and the two charging terminals P11 and P12, thereby charging the functional device 2.

[0042] That is, in some embodiments, when the coupling coil 12 of the protective shell 1 receives the AC power transmitted by the transmitting coil Q1 , it directly inputs the AC power into the functional device 2 to charge the functional device 2 .

[0043] In some embodiments, as Figure 3 As shown, at this time, the functional device 2 may include a charging management module 21 and a battery 22. The charging management module 21 is connected between the two charging terminals P11, P12 and the battery 22, and when receiving the AC power transmitted by the coupling coil 12, it converts the AC power into DC power to charge the battery 22.

[0044] That is, regarding the charging structure, the protective shell 1 only includes the coupling coil 12. When the coupling coil 12 couples and receives the AC power transmitted by the transmitting coil Q1, the AC power is directly input into the functional device 2 to charge the functional device 2. The functional device 2 includes a charging management module 21 and a battery 22. The charging management module 21 of the functional device 2 can convert the AC power into DC power to charge the battery 22, thereby realizing the charging function of the functional device 2.

[0045] In some embodiments, as Figure 2 As shown, the protective shell 1 may also include two electrical connectors J1, one of which is used to connect the first end 12a of the coupling coil 12 to the charging terminal P11, and the other electrical connector J1 is used to connect the second end 12b of the coupling coil 12 to the charging terminal P12, so that when the functional device 2 is accommodated in the accommodating structure 11, the first end 12a and the second end 12b of the coupling coil 12 are electrically connected to the two charging terminals P11 and P12 of the functional device 2 respectively.

[0046] In some embodiments, two electrical connection contacts may be provided on the cavity wall of the accommodating structure 11, and the two electrical connectors J1 may be respectively connected to the two electrical connection contacts. When the functional device 2 is accommodated in the accommodating structure 11, the functional device 2 includes two charging terminals P11 and P12 that are respectively in contact with the two electrical connection contacts and electrically connected, thereby enabling the first end 12a and the second end 12b of the coupling coil 12 to be respectively electrically connected to the two charging terminals P11 and P12 of the functional device 2.

[0047] See also Figure 4 , is another structural diagram of the protective shell 1 in some embodiments of the present application. In some embodiments, as Figure 4As shown, the protective shell 1 also includes a charging-related module 13, which is connected to the coupling coil 12. The charging-related module 13 is coupled to the functional device 2 when the functional device 2 is accommodated in the accommodating structure 11. The coupling coil 12 is electrically connected to the functional device through the charging-related module 13, wherein the charging-related module 13 transmits the AC power to the functional device when the coupling coil 12 receives AC power, or converts the AC power into DC power and then transmits it to the functional device to charge the functional device.

[0048] That is, in some embodiments, regarding the charging structure, the protective shell 1 may include the coupling coil 12 and the charging-related module 13. The AC power received by the coupling coil 12 from the transmitting coil Q1 can be first transmitted to the charging-related module 13, and then the AC power is processed or not processed by the charging-related module 13, and then transmitted to the functional device to charge the functional device.

[0049] Please also refer to Figure 5 and Figure 6 , Figure 5 This is a further structural diagram of the protective shell 1 in some embodiments of the present application. Figure 6 This is another structural block diagram of the protective shell assembly 100 in some embodiments of the present application.

[0050] in, Figure 5 Mainly indicates Figure 4 A further structure of the protective shell 1 is shown.

[0051] like Figure 5 In some embodiments, the charging-related module 13 includes a relay coil 131 and a resonant circuit 132, wherein both ends of the relay coil 131 are electrically connected to both ends of the coupling coil 12, and the resonant circuit 132 is located in a connection path where one end of the relay coil 131 is connected to one end of the coupling coil 12. Figure 6 As shown, the protective shell assembly 100 may also include the protective shell 1 and a functional device 2 for being accommodated in the accommodating structure 11 of the protective shell 1, such as Figure 6 As shown, the functional device 2 includes a receiving coil 23. When the functional device 2 is accommodated in the accommodating structure 11, the relay coil 131 is coupled to the receiving coil 23 of the functional device 2. When the coupling coil 12 receives AC power, the relay coil 131 cooperates with the resonant circuit 132 to receive the AC power. The relay coil 131 then couples and transmits the AC power to the receiving coil 23 of the functional device 2 to charge the functional device 2.

[0052] In this application, the coupling of the relay coil 131 and the receiving coil 23 may mean that the relay coil 131 is roughly parallel to the receiving coil 23 and at least partially facing each other, and the projection of the relay coil 131 on the plane where the receiving coil 23 is located at least partially overlaps with the receiving coil 23.

[0053] In some embodiments, the relay coil 131 is approximately parallel to and approximately facing the receiving coil 23, and the projection of the relay coil 131 on the plane where the receiving coil 23 is located approximately coincides with the transmitting coil Q1, thereby effectively improving the coupling degree between the relay coil 131 and the receiving coil 23 and improving the transmission efficiency of AC power.

[0054] Therefore, in some embodiments, by adding the relay coil 131, since the relay coil 131 and the receiving coil 23 can be roughly parallel and roughly opposite, and as mentioned above, the coupling coil 12 and the transmitting coil Q1 can also be roughly parallel and roughly opposite, AC energy can be transmitted with higher efficiency and loss can be effectively reduced.

[0055] In some embodiments, the size of the relay coil 131 is smaller than that of the coupling coil 12 .

[0056] That is, in some embodiments, the size of the relay coil 131 is smaller than the size of the coupling coil 12. Since the two ends of the relay coil 131 are connected to the two ends of the coupling coil 12, the current flowing through the two is roughly equal, which is equivalent to the total energy being basically equal. Therefore, when the size of the relay coil 131 is smaller than the size of the coupling coil 12, the energy per unit area of the relay coil 131 will be increased, which can effectively increase the transmission energy of the relay coil 131.

[0057] In some embodiments, the relay coil 131 and the coupling coil 12 are both planar coils formed by winding multiple turns of coils. In some embodiments, the size of the relay coil 131 is smaller than the size of the coupling coil 12, which may mean that the area enclosed by the outermost coil of the relay coil 131 is smaller than the area enclosed by the outermost coil of the coupling coil 12.

[0058] In some embodiments, by adding the resonant circuit 132 in the connection path connecting one end of the relay coil 131 with one end of the coupling coil 12, the coupling coil 12 and the relay coil 131 can be formed as a whole into a coil with a partition in the middle through the resonant circuit 132, and the two ends of the resonant circuit 132 are alternately at positive voltage and negative voltage, respectively, and can still generate alternating current energy.

[0059] In some embodiments, as Figure 5 As shown, the relay coil 131 includes a third end 131a and a fourth end 131b, and the coupling coil 12 includes a first end 12a and a second end 12b. The third end 131a and the fourth end 131b of the relay coil 131 are electrically connected to the first end 12a and the second end 12b of the coupling coil 12, respectively. The resonant circuit 132 can be connected between the third end 131a of the relay coil 131 and the first end 12a of the coupling coil 12, or between the fourth end 131b of the relay coil 131 and the second end 12b of the coupling coil 12, thereby being located in a connection path where one end of the relay coil 131 is connected to one end of the coupling coil 12. Figure 5 In the embodiment, the resonant circuit 132 is connected between the third end 131a of the relay coil 131 and the first end 12a of the coupling coil 12 as an example.

[0060] In some embodiments, the resonant circuit 132 is an LC resonant circuit. Figure 5 As shown, the resonant circuit 132 includes an inductor L1 and a capacitor C1, which are connected in series to form an LC resonant circuit, and the inductor L1 and the capacitor C1 are connected in series between the third end 131a of the relay coil 131 and the first end 12a of the coupling coil 12.

[0061] Specifically, by designing the resonant circuit 132 as an LC resonant circuit, the loss of transmission energy can be effectively reduced.

[0062] In some embodiments, as Figure 6 As shown, at this time, the functional device 2 may also include a charging management module 21 and a battery 22. The charging management module 21 is connected between the receiving coil 23 and the battery 22, and when the receiving coil 23 receives the AC power transmitted by the relay coil 131, the AC power is converted into DC power to charge the battery 22.

[0063] That is, regarding the charging structure, when the protective shell 1 includes the coupling coil 12, the relay coil 131 and the resonant circuit 132, the functional device 2 may include a receiving coil 23, a charging management module 21 and a battery 22. The charging management module 21 is connected between the receiving coil 23 and the battery 22. The relay coil 131 is coupled with the receiving coil 23 of the functional device 2. When the coupling coil 12 receives AC power, the relay coil 131 cooperates with the resonant circuit 132 to receive the AC power. The relay coil 131 couples the AC power to the receiving coil 23 of the functional device 2, and the charging management module 21 converts the AC power into DC power to charge the battery 22.

[0064] In some embodiments, the relay coil 131 and the receiving coil 23 of the functional device 2 may also be of solenoid magnetic rod type, FPC nanocrystal type, winding magnetic core type, etc.

[0065] Please also refer to Figure 7 and Figure 8 , Figure 7 This is another further structural diagram of the protective shell 1 in some embodiments of the present application. Figure 8 This is another structural block diagram of the protective shell assembly 100 in some embodiments of the present application.

[0066] in, Figure 7 Mainly indicates Figure 4 Another further structure of the protective shell 1 is shown.

[0067] In some embodiments, as Figure 7 As shown, the charging-related module 13 includes a charging management module 133, and the charging management module 133 includes two input terminals in1 and in2 and two output terminals out1 and out2. The two input terminals in1 and in2 are connected to the two ends of the coupling coil 12 respectively. Figure 3 As shown, the protective shell assembly 100 may include the protective shell 1 and a functional device 2 for being accommodated in the accommodating structure 11 of the protective shell 1. The functional device 2 includes two charging terminals P11 and P12. The two output terminals out1 and out2 are respectively electrically connected to the two charging terminals P11 and P12 of the functional device 2 when the accommodating structure 11 accommodates the functional device 2. The charging management module 133 is used to convert the AC power received by the coupling coil 12 into DC power, and transmit it to the functional device 2 through the two output terminals out1 and out2 to charge the functional device 2.

[0068] That is, in some embodiments, the charging-related module 13 may include a charging management module 133, which is used to convert the AC power received by the coupling coil 12 into DC power, and transmit it to the functional device 2 through the two output terminals out1 and out2 to charge the functional device 2.

[0069] In some embodiments, as Figure 8 As shown, at this time, the functional device 2 may include a battery 22, and the battery 22 is connected to the two charging terminals P11 and P12. For example, the positive pole and the negative pole of the battery 22 are respectively connected to the two charging terminals P11 and P12, so that the battery 22 of the functional device 2 can receive the DC power output by the charging management module 133 through the two charging terminals P11 and P12 for charging.

[0070] In some embodiments, when the charging-related module 13 of the protective shell 1 includes a charging management module 133, as shown in FIG. Figure 8 As shown, the functional device 2 may further include a voltage conversion module 24, which is connected between the two charging terminals P11, P12 and the battery 22, and is used to convert the voltage or current in the DC power output by the charging management module 133 into a more suitable charging voltage and charging current to charge the battery 22.

[0071] The voltage conversion module 24 may include a boost circuit and / or a buck circuit, and may boost or buck the voltage of the DC power output by the charging management module 133 as needed, so that the charging voltage provided to the battery 22 is a more appropriate charging voltage.

[0072] In some embodiments, as Figure 6 As shown, when the functional device 2 includes the charging management module 21, the functional device 2 may further include a voltage conversion module 24, which is connected between the charging management module 21 and the battery 22, and is used to convert the voltage or current in the DC power output by the charging management module 21 into a more suitable charging voltage and charging current to charge the battery 22.

[0073] In some embodiments, when the coupling coil 12 receives the AC power, the charging management module 133 or the charging management module 21 also performs handshake communication with the device where the transmitting coil Q1 is located.

[0074] That is, in some embodiments, when the protective case 1 includes the charging management module 133, or when the functional device 2 includes the charging management module 21, the charging management module 133 or the charging management module 21 still receives the AC power at the coupling coil 12, and determines that the transmitting coil Q1 exists at this time, thereby performing handshake communication with the device where the transmitting coil Q1 is located. After the handshake communication is successful, a communication connection can be established to exchange information, for example, the battery status information of the battery 22 of the functional device 2 is sent to the device where the transmitting coil Q1 is located, so that the device where the transmitting coil Q1 is located can adjust the transmission power and adjust the voltage or current output to the battery 22 to adapt to the status of the battery 22. In some embodiments, the battery status information includes battery power information.

[0075] In some embodiments, when the coupling coil 12 receives the AC power, the charging management module 133 or the charging management module 21 delays a preset time period to perform handshake communication with the device where the transmitting coil Q1 is located.

[0076] That is, in some embodiments, the protective case 1 may be mounted on an electronic device with a wireless charging function, and the electronic device with the protective case 1 mounted thereon may also be placed on a wireless charging stand. In this case, since the electronic device is also the object to be charged, the functional device 2 on the protective case 1 and the electronic device will both be the objects to be charged. In some embodiments, the protective case 1 may be mounted on an electronic device with a wireless charging function, and the electronic device with a wireless charging function may turn on the reverse charging function to charge other electronic devices. Therefore, the functional device 2 on the protective case 1 and the other electronic devices will both be the objects to be charged. In both cases, in addition to the functional device 2 on the protective case 1, the electronic device or other electronic devices will also be the objects to be charged.

[0077] Therefore, in order not to interfere with the normal charging of the electronic device and the reverse charging of other electronic devices, the charging management module 133 or the charging management module 21 delays the handshake communication with the device where the transmitting coil Q1 is located for a preset period of time when the coupling coil 12 receives the AC power. Thus, when the electronic device or other electronic device is the charged object, the electronic device or other electronic device can first perform handshake communication and establish communication with the device where the transmitting coil Q1 is located.

[0078] Among them, generally speaking, the communication between the charging end device (that is, the device where the transmitting coil Q1 is located) and the charged end device (that is, the charged object) is one-to-one communication. When the electronic device or other electronic device is the charged object, the electronic device or other electronic device first performs handshake communication with the device where the transmitting coil is located. When the communication is successfully established, the charging management module 133 or the charging management module 21 delays the handshake communication with the device where the transmitting coil Q1 is located for a preset period of time, and then ignores it. Therefore, it can avoid affecting the normal charging of the electronic device and the communication of other electronic devices during the reverse charging process.

[0079] Among them, if the electronic device does not exist or other electronic devices are charged objects, the charging management module 133 or the charging management module 21 delays for a preset time to perform handshake communication with the device where the transmitting coil Q1 is located, and then a communication connection can be established.

[0080] In some embodiments, the preset duration may be several milliseconds or several seconds, for example, any value between 1 ms (milliseconds) and 10 seconds (seconds).

[0081] In some embodiments, when the charging management module 133 or the charging management module 21 fails to handshake communication with the device where the transmitting coil Q1 is located, since the coupling coil 12 can still couple to obtain a portion of the AC power emitted by the transmitting coil Q1, the charging management module 133 or the charging management module 21 can also choose to convert the AC power into DC power as needed to charge the battery in the functional device 2.

[0082] In some embodiments, when the protective shell 1 includes the charging management module 133, the charging management module 133 is also used to obtain the battery status information of the functional device 2 when the functional device 2 is accommodated in the accommodating structure 11, and when it is determined according to the battery status information that the battery status of the functional device 2 meets the requirements, the AC power received by the coupling coil 12 is converted into DC power, and transmitted to the functional device through the two output terminals to charge the functional device.

[0083] Therefore, in some embodiments, the charging management module 133 is further configured to obtain battery status information of the functional device 2 when the accommodating structure 11 accommodates the functional device 2, and, upon determining based on the battery status information that the battery status of the functional device 2 meets requirements, convert the AC power into DC power and transmit the DC power to the functional device via the two output terminals to charge the functional device. This effectively ensures charging safety.

[0084] As mentioned above, the battery status information includes battery power information.

[0085] For example, if the charging management module 133 determines based on the battery status information that the battery level of the functional device 2 is less than a preset level, such as less than 80%, then the charging management module 133 determines that the battery level of the functional device 2 meets the requirements, converts the AC power into DC power, and transmits the DC power to the functional device via the two output terminals to charge the functional device. This prevents charging when the battery level of the functional device 2 is high, effectively ensuring charging safety.

[0086] In some embodiments, when the functional device 2 includes the charging management module 21, the charging management module 21 can also obtain the battery status information of the battery 22 of the functional device 2, and when receiving the AC power transmitted from the protective shell 1, when it is determined according to the battery status information that the battery status of the functional device 2 meets the requirements, the AC power is converted into DC power to charge the battery 22.

[0087] In some embodiments, the charging management module 133 or the charging management module 21 is further configured to perform handshake communication with the device where the transmitting coil Q1 is located to establish a communication connection. For example, as described above, after the coupling coil 12 receives the AC power, it delays for a preset period of time and then performs handshake communication with the device where the transmitting coil Q1 is located to establish a communication connection. After successfully establishing the communication connection, the charging management module 133 or the charging management module 21 transmits the battery status information of the functional device to the device where the transmitting coil Q1 is located, so that the device where the transmitting coil Q1 is located can determine whether to start charging.

[0088] In some embodiments, as described above, the battery status information includes battery charge information.

[0089] In some embodiments, the device where the transmitting coil Q1 is located can determine, based on the battery status information, that the battery power of the functional device 2 is less than a preset power level, for example, less than 80% of the power level, and then determine to start charging, thereby transmitting AC power through the transmitting coil Q1. In this way, charging of the functional device 2 when the battery power of the functional device 2 is high can be avoided, thereby improving charging safety.

[0090] In some embodiments, as described above, when the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, the transmitting coil Q1 includes the charging coil of the electronic device. That is, when the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, the coupling coil 12 can couple with the charging coil of the electronic device. The electronic device can activate the reverse charging function to transmit wireless energy, i.e., AC power, through the charging coil, which is then received by the coupling coil 12. When the protective case 1 is placed on a wireless charging stand, the transmitting coil Q1 can also include the transmitting coil of the wireless charging stand. That is, the coupling coil 12 can couple with the transmitting coil of the wireless charging stand and receive the wireless energy transmitted by the transmitting coil of the wireless charging stand. When the protective case 1 is mounted on the electronic device and the electronic device has a wireless charging function, and the protective case 1 is also placed on the wireless charging stand, since the electronic device is also being charged, the transmitting coil Q1 can include the transmitting coil of the wireless charging stand.

[0091] Specifically, the charging coil of the electronic device can act as a receiving coil to receive wireless energy transmitted by an external transmitting coil when the electronic device is being charged, for example, when it is placed on a wireless charging stand for charging. The charging coil of the electronic device can also act as a transmitting coil when the reverse charging function of the electronic device is turned on, and can transmit wireless energy to the outside.

[0092] Please return to Figure 1 In some embodiments, as Figure 1 As shown, the protective shell 1 includes a protective shell body 10, the protective shell body 10 includes a bottom plate 101 and side plates 102 surrounding the bottom plate 101, the coupling coil 12 is arranged on the bottom plate 101, and the accommodating structure 11 is arranged on the outer wall of the bottom plate 101 and / or the side plate 102.

[0093] That is, in some embodiments, the protective case body 10 includes a bottom plate 101 and side plates 102 arranged around the bottom plate 101, so that the bottom plate 101 and the side plates 102 arranged around the bottom plate 101 form a cavity, and when the protective case 1 is mounted on a corresponding electronic device, the electronic device can be accommodated in the cavity formed by the bottom plate 101 and the side plates 102 arranged around the bottom plate 101, thereby better protecting the electronic device. Specifically, when the protective case 1 is mounted on the electronic device, the bottom plate 101 is directly opposite to the back cover of the electronic device, and the side plates 102 arranged around the bottom plate 101 are directly opposite to the side frames of the electronic device.

[0094] In some embodiments, the coupling coil 12 is specifically arranged on the bottom plate 101 of the protective case 1, so that when the protective case 1 is mounted on an electronic device with a wireless charging function, the coupling coil 12 can be coupled with the charging coil on the back side of the electronic device.

[0095] Among them, the accommodating structure 11 is arranged on the outer wall of the bottom plate 101 and / or the side plate 102, which may mean that most of the structure of the accommodating structure 11 is arranged on the outer wall of the bottom plate 101 and / or the side plate 102, so that functional equipment can be accommodated without affecting the protective shell 1 being mounted on the electronic device.

[0096] In some embodiments, the accommodating structure 11 is arranged on the outer wall of the bottom plate 101 and / or the side plate 102, including: the accommodating structure 11 is arranged on the outer wall of the bottom plate 101, or the accommodating structure 11 is arranged on the outer wall of the side plate 102, or part of the accommodating structure 11 is arranged on the outer wall of the bottom plate 101, and the other part is arranged on the outer wall of the side plate 102.

[0097] When at least a portion of the accommodating structure 11 is disposed on the outer side wall of the side panel 102 , at least a portion of the accommodating structure 11 may be disposed on the outer side wall of the side panel 102 at any side of the protective shell body 10 .

[0098] That is, in some embodiments, the bottom plate 101 is substantially rectangular, and the protective case body 10 is substantially a cuboid.

[0099] in, Figure 1 In the embodiment, the accommodating structure 11 is provided on the outer side wall of the side panel 102 and is provided on the long side of the protective case 1, that is, the protective case body 10. By providing the accommodating structure 11 on the outer side wall of the side panel 102, the thickness of the protective case 1 is not increased, and the overall thickness is effectively reduced.

[0100] In some embodiments, the coupling coil 12 is embedded in the bottom plate 101. Thus, the coupling coil 12 can be wrapped by the bottom plate 101 to avoid damage.

[0101] In some embodiments, when the protective shell 1 further includes a charging-related module 13 , the charging-related module 13 can be embedded in the bottom plate 101 and / or the side plate 102 , thereby effectively protecting the charging-related module 13 .

[0102] In some embodiments, the coupling coil 12 , the charging-related module 13 , etc. may also be located on the inner surface of the bottom plate 101 and / or the side plate 102 , without being embedded in the bottom plate 101 .

[0103] See also Figure 9 , which is a structural diagram of the protective shell assembly 100 in some embodiments of the present application.

[0104] Among them, the aforementioned Figure 2 The structural diagram of the protective shell 1 and the like also illustrate the structures such as the functional device 2, and can also be regarded as a structural diagram of the protective shell assembly 100.

[0105] In some embodiments, as Figure 9 As shown, the accommodating structure 11 includes an accommodating cavity 111 with an opening at at least one end and a trigger mechanism 112. The accommodating cavity 111 is used to accommodate the functional device 2. The trigger mechanism 112 is used to be in a triggered state when the functional device 2 is accommodated in the accommodating cavity 111, so that when the protective shell 1 is put on the electronic device, the electronic device can recognize that the functional device 2 has been accommodated in the accommodating structure 11.

[0106] That is, in some embodiments, the accommodating structure 11 includes an accommodating cavity 111 with at least one end open, so that the functional device 2 can be accommodated in the accommodating cavity 111 through the opening, and the accommodating structure 11 further includes a trigger mechanism 112. The trigger mechanism 112 can be in a triggered state when the functional device 2 is accommodated in the accommodating cavity 111, so that the electronic device can recognize that the functional device 2 has been accommodated in the accommodating structure 11. Thus, the electronic device can enable reverse charging to charge the functional device 2, or, as described above, the electronic device can communicate with the charging management module 133 or the charging management module 21 and determine whether to enable charging based on the battery status information of the functional device 2. If charging is enabled, the charging coil of the electronic device is controlled to transmit wireless energy.

[0107] In some embodiments, as Figure 9 The trigger mechanism 112 may include a slider and locking mechanism 112a, an elastic member 112b, a rotating rod 112c, and a magnetic member 112d, wherein the slider and locking mechanism 112a is connected to the bottom wall of the accommodating cavity 111 opposite to the opening through the elastic member 112b. In some embodiments, as Figure 9 As shown, the accommodating cavity 111 may be a cylindrical cavity with an opening at one end, and the functional device 2 may enter from the opening until it is completely accommodated in the accommodating cavity 111 .

[0108] In some embodiments, the slider and locking mechanism 112a can slide along the axial direction of the accommodating chamber 111, that is, slide from the opening of the accommodating chamber 111 to the bottom wall or from the bottom wall to the opening. The slider and locking mechanism 112a can slide toward the bottom wall and compress the elastic member 112b under the pressure of the functional device 2, and when sliding to a preset position, they cooperate with the structure in the accommodating chamber 111 and are in a locked state. When unlocking and locking, the slider and locking mechanism 112a can slide beyond the opening of the accommodating chamber 111 under the action of the elastic restoring force of the elastic member 112b, thereby driving the functional device 2 to move toward the opening, so that the functional device 2 can be removed.

[0109] When the slider and the locking mechanism 112 a slide to a preset position and cooperate with the structure in the accommodating cavity 111 to be in a locked state, the functional device 2 is accommodated in the accommodating cavity 111 .

[0110] In this application, the functional device 2 being accommodated in the accommodating cavity 111 may refer to the functional device 2 being completely accommodated in the accommodating cavity 111 .

[0111] In some embodiments, one end of the rotating rod 112c is connected to the slider and locking mechanism 112a, and the other end of the rotating rod 112c is provided with the magnetic member 112d. The middle position of the rotating rod 112c is connected to a support column 112e, and the rotating rod 112c can rotate around the support column. When the slider and locking mechanism 112a slide along the axial direction of the accommodating cavity 111, one end of the rotating rod 112c is driven to move, causing the magnetic member 112d at the other end of the rotating rod 112c to move in the opposite direction. When the slider and locking mechanism 112a slide to a preset position and cooperate with the structure in the accommodating cavity 111 to be in a locked state, the magnetic member 112d at the other end of the rotating rod 112c moves to a trigger position. In which, when the protective shell 1 is put on the electronic device, the trigger position can correspond to the position of a sensor in the electronic device, such as a Hall sensor, so that the Hall sensor of the electronic device can generate a corresponding sensing signal, and the electronic device can know that the functional device 2 has been placed in the accommodating structure 11.

[0112] Therefore, when the slider and the locking mechanism 112a slide to the preset position and cooperate with the structure in the accommodating chamber 111 to be in a locked state, and the magnetic member 112d at the other end of the rotating rod 112c moves to the trigger position, the trigger mechanism 112 is in the triggered state.

[0113] In some embodiments, the elastic member 112b may be a spring, and the magnetic member 112d may be a magnet.

[0114] In some embodiments, a cavity communicating with the accommodating cavity 111 may be formed in the bottom plate 101 , and a portion of the rotating rod 112 c and the magnetic member 112 d may be disposed in the cavity of the bottom plate 101 and may move within a certain area.

[0115] in, Figure 9 For the Figure 1 A further structure is schematically shown on the basis of the protective shell 1 shown. Obviously, the protective shell 1 and the functional device 2 can be the structures of any of the aforementioned embodiments.

[0116] See also Figure 10 , is another structural schematic diagram of the protective shell assembly 100 in some embodiments of the present application.

[0117] In some embodiments, in some embodiments, as Figure 10 As shown, the accommodating structure 11 includes an accommodating cavity 111 with an opening at at least one end, and the accommodating cavity 111 is used to accommodate the functional device 2. The functional device 2 includes a magnetic part 25. When the functional device 2 is accommodated in the functional device 2, the magnetic part 25 is in a corresponding trigger position, so that when the protective shell 1 is put on the electronic device, the electronic device can recognize that the functional device 2 has been accommodated in the accommodating structure 11.

[0118] That is, in some embodiments, the accommodating structure 11 includes an accommodating cavity 111 with at least one end open, so that the functional device 2 can be accommodated in the accommodating cavity 111 through the opening, and the functional device 2 includes a magnetic member 25. When the functional device 2 is accommodated in the functional device 2, the magnetic member 25 is in a corresponding trigger position. When the protective shell 1 is mounted on the electronic device, the trigger position can correspond to the position of a sensor in the electronic device, such as a Hall sensor, so that the Hall sensor of the electronic device can generate a corresponding sensing signal, and the electronic device can know that the functional device 2 has been accommodated in the accommodating structure 11.

[0119] Thus, in some embodiments, compared to Figure 9 In the structure shown, the accommodating structure 11 may also not include the trigger mechanism 112, so as to simplify the structure.

[0120] In some embodiments, the magnetic member 25 may also be a magnet.

[0121] In some embodiments, a magnet may be provided on the bottom wall of the accommodating cavity 111, and a magnet may also be provided at one end of the functional device 2. When the functional device 2 is accommodated in the accommodating cavity 111, the functional device 2 is fixed in the accommodating cavity 111 by the adsorption force of the magnet.

[0122] In some embodiments, the magnet provided at one end of the functional device 2 may be an electromagnet, and the two ends of the electromagnet can be connected to the two ends of the battery in the functional device 2 through a switch, and the connection between the two ends of the electromagnet and the positive and negative poles of the battery can be switched by the switch, thereby changing the polarity of the electromagnet and generating an attractive force or a repulsive force with the magnet provided on the bottom wall of the accommodating cavity 111, thereby facilitating the fixing of the functional device 2 in the accommodating cavity 111 or removing the functional device 2 from the accommodating cavity 111.

[0123] In some embodiments, when the functional device 2 includes two charging terminals P11 and P12 and is connected to the two ends of the coupling coil 12 of the protective shell 1, or is connected to the two output terminals of the charging management module 133 in the protective shell 1, the protective shell 1 may also include two electrical connectors connecting the accommodating cavity 111 and the bottom plate 101, and are respectively connected between the two charging terminals P11 and P12 and the two ends of the coupling coil 12 in the protective shell 1, or are respectively connected between the two charging terminals P11 and P12 and the two output terminals of the charging management module 133 in the protective shell 1.

[0124] in, Figure 9 and Figure 10 In the figure, the functional device 2 is illustrated by taking a stylus pen as an example. Obviously, as mentioned above, the functional device 2 can also be a Bluetooth headset, a detachable flash light, a detachable sports camera, a detachable voice recorder, etc.

[0125] Thus, through the protective shell 1 of the present application, a functional device can be accommodated by providing a accommodating structure 11 on the protective shell 1, and the protective shell 1 also includes a coupling coil 12, which can be coupled with the transmitting coil Q1, and the functional device can be accommodated in the accommodating structure 11. When the transmitting coil Q1 transmits AC power, the AC power is received to charge the functional device. Therefore, there is no need to prepare an additional charger for the functional device, which facilitates the charging of the functional device. The functional device is accommodated in the accommodating structure 11 of the protective shell 1, which also facilitates the carrying of the functional device.

[0126] In some embodiments, the present application further provides a protective case assembly 100 as described in any of the above embodiments. That is, as described above, the protective case assembly includes the protective case 1 in any of the above embodiments, and further includes a functional device 2 for being accommodated in the accommodating structure 11 of the protective case 1.

[0127] In some embodiments, as described above, when the coupling coil 12 is used to input the AC power into the functional device 2 to charge the functional device 2, the functional device 2 includes a charging management module 21 and a battery 22. The charging management module 21 is connected between the two charging terminals P11, P12 and the battery 22, and when receiving the AC power transmitted by the coupling coil 12, it converts the AC power into DC power to charge the battery 22.

[0128] In some embodiments, as described above, when the protective shell 1 includes a coupling coil 12, a relay coil 131 and a resonant circuit 132, the functional device 2 includes a receiving coil 23, a charging management module 21 and a battery 22. The charging management module 21 is connected between the receiving coil 23 and the battery 22. The relay coil 131 is coupled with the receiving coil 23 of the functional device 2. When the coupling coil 12 receives AC power, the relay coil 131 cooperates with the resonant circuit 132 to receive the AC power. The relay coil 131 also couples and transmits the AC power to the receiving coil 23 of the functional device 2. The charging management module 21 converts the AC power received by the receiving coil 23 into DC power to charge the battery 22.

[0129] In some embodiments, as described above, when the protective shell 1 includes a coupling coil 12 and a charging management module 133, the functional device 2 includes two charging terminals P11, P12 and a battery 22, and the two output terminals of the charging management module 133 are electrically connected to the two charging terminals P11, P12 of the functional device 2 respectively. The charging management module 133 is used to convert the AC power received by the coupling coil 12 into DC power, and transmit it to the two charging terminals P11, P12 of the functional device 2 through the two output terminals to charge the battery 22 of the functional device 2.

[0130] The specific structure of the protective shell assembly 100 can be found in the relevant description of the aforementioned embodiment, and will not be repeated here.

[0131] See also Figure 11 , is a structural block diagram of the wireless charging system 200 in some embodiments of the present application.

[0132] like Figure 11As shown, the wireless charging system 200 includes an electronic device 300 and the protective case assembly 100 described in any of the aforementioned embodiments.

[0133] Among them, the electronic device 300 has a wireless charging function and includes a charging coil. The protective shell 1 of the protective shell assembly 100 is used to be mounted on the electronic device 300, and when the protective shell 1 is mounted on the electronic device 300, the coupling coil 12 of the protective shell 1 and the charging coil of the electronic device 300 are at least partially opposite and coupled to each other.

[0134] As mentioned above, the coupling coil 12 and the charging coil 301 of the electronic device 300 can be substantially parallel and substantially facing each other, thereby enabling AC energy to be transmitted with higher efficiency and effectively reducing losses.

[0135] The protective shell assembly 100 may be the protective shell assembly 100 in any of the aforementioned embodiments.

[0136] The electronic device 300 may include a mobile phone, a tablet computer, an e-book, or other electronic devices with a wireless charging function.

[0137] In some embodiments, the electronic device 300 may be the electronic device mentioned in the aforementioned embodiments, and the functions performed by the electronic device 300 may also refer to the aforementioned description. For example, in some embodiments, the electronic device 300 may recognize that the functional device 2 has been accommodated in the accommodating structure 11, turn on the reverse charging function, and control the charging coil 301 to transmit wireless energy. In some embodiments, the electronic device 300 may also establish a communication connection with the charging management module 133 or the charging management module 21 in the protective shell assembly 100, and receive the battery status information of the functional device 2 sent by the charging management module 133 or the charging management module 21, and determine to turn on charging based on the battery status information of the functional device 2 before controlling the charging coil of the electronic device to transmit wireless energy.

[0138] For another example, in some embodiments, the electronic device 300 further includes a sensor, such as a Hall sensor. As described above, when the protective shell 1 is mounted on the electronic device, when the magnetic member is in a corresponding trigger position, it corresponds to the position of the sensor in the electronic device, such as the Hall sensor. Thus, the Hall sensor of the electronic device 300 can generate a corresponding sensing signal, and the electronic device 300 can know that the functional device 2 has been placed in the accommodating structure 11.

[0139] See also Figure 12 , is a circuit block diagram of the wireless charging system 200 in some embodiments of the present application.

[0140] in, Figure 12 for Figure 11 The circuit block diagram of the wireless charging system 200 is shown, wherein: Figure 12 In the figure, the protective shell 1 includes a coupling coil 12, a relay coil 131, etc., and the functional device 2 includes a charging management module 21, a battery 22 and a receiving coil 23, etc., as an example.

[0141] like Figure 12 As shown, the electronic device 300 includes a charging coil 301, a charging management module 302 and a battery 303. The charging coil 301 is coupled to the coupling coil 12 of the protective shell 1. When the reverse charging function of the electronic device 300 is turned on, the charging management module 302 inverts the DC power output by the battery 303 into AC power and transmits it to the charging coil 301, and transmits the wireless power / AC power through the charging coil 301. The coupling coil 12 receives the AC power transmitted by the charging coil 301 and transmits it to the relay coil 131. The relay coil 131 is coupled with the receiving coil 23 of the functional device 2 and further couples the AC power to the receiving coil 23 of the functional device 2. When the receiving coil 23 receives the AC power transmitted by the relay coil 131, the charging management module 21 of the functional device 2 converts the AC power into DC power to charge the battery 22.

[0142] In some embodiments, the charging management module 302 may include a bridge circuit module, a filter module, etc. The bridge circuit module acts as an inverter bridge when the reverse charging function of the electronic device 300 is enabled, and inverts the DC power output by the battery 303 into AC power. The filter module is used to perform filtering. The charging management module 21 may also include a bridge circuit module, a filter module, etc., and the bridge circuit module acts as a rectifier module to convert AC power into DC power. The filter module performs filtering to achieve rectification and filtering to obtain smooth DC power.

[0143] In some embodiments, the electronic device 300 may also include a voltage conversion module 304, which can be connected between the charging management module 302 and the battery 303. The voltage conversion module 304 may include a boost circuit and / or a buck circuit, and can boost or buck the voltage output by the battery 303 as needed, thereby changing the transmission power of the charging coil 301 of the electronic device 300.

[0144] In some embodiments, the functional device 2 may also include a voltage conversion module 24, which may be connected between the charging management module 21 and the battery 22. The voltage conversion module 24 may also include a boost circuit and / or a buck circuit for converting the voltage or current in the DC power output by the charging management module 21 into a more suitable charging voltage and charging current to charge the battery 22.

[0145] See also Figure 13 , is another circuit block diagram of the wireless charging system 200 in some embodiments of the present application.

[0146] in, Figure 13 for Figure 11 Another circuit block diagram of the wireless charging system 200 is shown, wherein: Figure 13 In the figure, the protective shell 1 includes a coupling coil 12, a charging management module 133, etc., and the functional device 2 includes two charging terminals P11, P12, a battery 22, etc. as an example.

[0147] like Figure 13 As shown, the electronic device 300 includes a charging coil 301, a charging management module 302 and a battery 303. The charging coil 301 is coupled to the coupling coil 12 of the protective shell 1. When the reverse charging function of the electronic device 300 is turned on, the charging management module 302 inverts the DC power output by the battery 303 into AC power and transmits it to the charging coil 301, and transmits the wireless power / AC power through the charging coil 301. The coupling coil 12 receives the AC power transmitted by the charging coil 301, and the charging management module 133 converts the AC power received by the coupling coil 12 into DC power, and inputs it to the functional device 2 through the two charging terminals P11 and P12 of the functional device 2 to charge the battery 22 in the functional device 2.

[0148] Among them, Figure 13 As shown, the functional device 2 also includes a voltage conversion module 24, which is connected between the two charging terminals P11, P12 and the battery 22, and is used to convert the voltage or current in the DC power output by the charging management module 133 into a more suitable charging voltage and charging current to charge the battery 22.

[0149] See also Figure 14 , is another structural block diagram of the wireless charging system 200 in some embodiments of the present application.

[0150] like Figure 14As shown, the wireless charging system 200 includes an electronic device 300 and the protective case assembly 100 described in any of the above embodiments, and further includes a wireless charging stand 400. That is, in some embodiments, the wireless charging system 200 may further include a wireless charging stand 400.

[0151] Among them, the electronic device 300 has a wireless charging function and includes a charging coil 301. The protective shell 1 of the protective shell assembly 100 is used to be mounted on the electronic device 300. When the protective shell 1 is mounted on the electronic device 300, the coupling coil 12 of the protective shell 1 and the charging coil 301 of the electronic device 300 are at least partially opposite and coupled to each other.

[0152] As mentioned above, the coupling coil 12 and the charging coil 301 of the electronic device 300 can be substantially parallel and substantially facing each other, thereby enabling AC energy to be transmitted with higher efficiency and effectively reducing losses.

[0153] The wireless charging stand 400 includes a transmitting coil 401. When the electronic device 300, encased in a protective case 1, is placed on the wireless charging stand 400, the charging coil 301 and the coupling coil 12 of the electronic device 300 couple with the transmitting coil 401. For example, the charging coil 301, the coupling coil 12, and the transmitting coil 401 can all be substantially parallel and substantially facing each other, thereby enabling AC energy to be transmitted with high efficiency and effectively reducing losses.

[0154] Among them, when the wireless charging stand 400 is present, the electronic device 300 and the functional device 2 in the protective shell 1 can both be charged. At this time, the charging coil 301 in the electronic device 300 acts as a receiving coil, and the charging management module 302 in the electronic device 300 can convert the AC power received by the charging coil 301 in the electronic device 300 into DC power to charge the battery 303 in the electronic device 300. At this time, the coupling coil 12 in the protective shell 1 can also couple to obtain a portion of the AC power. The charging management module 133 or the charging management module 21 can convert the AC power obtained by coupling the coupling coil 12 into DC power to charge the battery in the functional device 2 housed in the protective shell 1.

[0155] In some embodiments, as described above, when the coupling coil 12 receives the AC power, the charging management module 133 or the charging management module 21 in the protective case assembly 100 delays for a preset time period to perform handshake communication with the device where the transmitting coil Q1 is located, such as the wireless charging stand 400. As a result, the electronic device 300 can first perform handshake communication with the wireless charging stand 400 to establish communication with the wireless charging stand 400. Therefore, the normal communication of the electronic device 300 during the charging process will not be affected.

[0156] In some embodiments, as described above, when the handshake communication between the charging management module 133 or the charging management module 21 in the protective case assembly 100 and the device where the transmitting coil Q1 is located, such as the wireless charging stand 400, fails, since the coupling coil 12 can still couple to obtain a portion of the AC power transmitted by the transmitting coil Q1, the charging management module 133 or the charging management module 21 can also choose to convert the AC power into DC power as needed to charge the battery in the functional device 2. For example, the charging management module 133 or the charging management module 21 can obtain the battery status information of the functional device 2, and when it is determined that the battery status of the functional device 2 meets the requirements based on the battery status information, the charging management module 133 or the charging management module 21 converts the AC power received by the coupling coil 12 into DC power to charge the battery of the functional device.

[0157] Wherein, the electronic device 300 may be the electronic device mounted in the protective shell 1 in the aforementioned embodiment. The wireless charging stand 400 may be a wireless charging base or a device with an energy storage function, etc. When the wireless charging stand 400 is a device with an energy storage function, it also includes an energy storage module (for example, a lithium battery), which can obtain and store electrical energy from an external power supply device, such as a power adapter. Thus, the energy storage module can provide electrical energy to the transmitting coil 401 of the wireless charging stand 400 for transmission. Wherein, the wireless charging stand 400 can obtain electrical energy from an external power supply device in a wired or wireless manner. Wherein, the wired manner, for example, can be to obtain electrical energy by connecting to a power supply device through a connection interface (for example, a USB interface, etc.). The wireless manner, for example, the wireless charging stand 400 may also include a wireless receiving circuit, which can obtain electrical energy from a device with a wireless charging function in a wireless manner.

[0158] See also Figure 15 , is another circuit block diagram of the wireless charging system 200 in some embodiments of the present application.

[0159] in, Figure 15 Can Figure 14 The circuit block diagram of the wireless charging system 200 is shown, wherein: Figure 15 In the figure, the protective shell 1 includes a coupling coil 12, a relay coil 131, etc., and the functional device 2 includes a charging management module 21, a battery 22 and a receiving coil 23, etc., as an example.

[0160] like Figure 15 As shown, the electronic device 300 includes a charging coil 301, a charging management module 302, and a battery 303, and the wireless charging stand 400 includes a transmitting coil 401 and a charging management module 402. The charging management module 402 of the wireless charging stand 400 can be used to invert DC power into AC power and transmit it through the transmitting coil 401. The charging coil 301 and the coupling coil 12 of the protective case 1 are both coupled to the transmitting coil 401 of the wireless charging stand 400 to receive the AC power transmitted by the transmitting coil 401 of the wireless charging stand 400. The charging management module 302 of the electronic device 300 converts the AC power received by the charging coil 301 into DC power and provides it to the battery 303 to charge the battery 303. The coupling coil 12 can also receive the AC power transmitted by the transmitting coil 401 of the wireless charging stand 400 and transmit it to the relay coil 131. The relay coil 131 is coupled with the receiving coil 23 of the functional device 2, and further couples and transmits the AC power to the receiving coil 23 of the functional device 2. When the receiving coil 23 receives the AC power transmitted by the relay coil 131, the charging management module 21 of the functional device 2 converts the AC power into DC power to charge the battery 22.

[0161] In some embodiments, the charging management module 302 may include a bridge circuit module, a filter module, etc. The bridge circuit module of the charging management module 302 functions as a rectifier bridge when the electronic device 300 is acting as a charged device, converting the AC power received by the charging coil 301 into DC power, and the filter module is used to perform filtering. The charging management module 21 may also include a bridge circuit module, a filter module, etc., and the bridge circuit module of the charging management module 21 functions as a rectifier module, converting the AC power into DC power, and the filter module performs filtering, achieving rectification and filtering to obtain smooth DC power.

[0162] In some embodiments, the electronic device 300 may also include a voltage conversion module 304, which can be connected between the charging management module 302 and the battery 303. The voltage conversion module 304 may include a boost circuit and / or a buck circuit, and can boost or buck the voltage output by the charging management module 302 as needed to obtain a more suitable charging voltage to charge the battery 303.

[0163] In some embodiments, the functional device 2 may also include a voltage conversion module 24, which may be connected between the charging management module 21 and the battery 22. The voltage conversion module 24 may also include a boost circuit and / or a buck circuit for converting the voltage or current in the DC power output by the charging management module 21 into a more suitable charging voltage and charging current to charge the battery 22.

[0164] See also Figure 16 , is another circuit block diagram of the wireless charging system 200 in some embodiments of the present application.

[0165] in, Figure 16 for Figure 14 Another circuit block diagram of the wireless charging system 200 is shown, wherein: Figure 16 In the figure, the protective shell 1 includes a coupling coil 12, a charging management module 133, etc., and the functional device 2 includes two charging terminals P11, P12, a battery 22, etc. as an example.

[0166] like Figure 16 As shown, the electronic device 300 includes a charging coil 301, a charging management module 302, and a battery 303. The wireless charging station 400 includes a transmitting coil 401 and a charging management module 402. The charging management module 402 of the wireless charging station 400 can be used to invert DC power into AC power and transmit it through the transmitting coil 401. The charging coil 301 and the coupling coil 12 of the protective case 1 are both coupled to the transmitting coil 401 of the wireless charging station 400 to receive the AC power transmitted by the transmitting coil 401 of the wireless charging station 400. The charging management module 302 of the electronic device 300 converts the AC power received by the charging coil 301 into DC power and provides it to the battery 303 to charge the battery 303. The coupling coil 12 receives the AC power transmitted by the charging coil 301. The charging management module 133 converts the AC power received by the coupling coil 12 into DC power and outputs it to the functional device 2 to charge the battery 22 in the functional device 2.

[0167] In some embodiments, the charging management module 302 may include a bridge circuit module, a filter module, etc. The bridge circuit module of the charging management module 302 functions as a rectifier bridge when the electronic device 300 is acting as a charged device, converting the AC power received by the charging coil 301 into DC power, and the filter module is used to perform filtering. The charging management module 21 may also include a bridge circuit module, a filter module, etc., and the bridge circuit module of the charging management module 21 functions as a rectifier module, converting the AC power into DC power, and the filter module performs filtering, achieving rectification and filtering to obtain smooth DC power.

[0168] In some embodiments, as Figure 16 As shown, the electronic device 300 may also include a voltage conversion module 304, which can be connected between the charging management module 302 and the battery 303. The voltage conversion module 304 may include a boost circuit and / or a buck circuit, and can boost or buck the voltage output by the charging management module 302 as needed to obtain a more suitable charging voltage to charge the battery 303.

[0169] In some embodiments, as Figure 16 As shown, the functional device 2 may also include a voltage conversion module 24, which can be connected between the two charging terminals P11, P12 and the battery 22. The voltage conversion module 24 may also include a boost circuit and / or a buck circuit for converting the voltage or current in the DC power output by the charging management module 21 into a more suitable charging voltage and charging current to charge the battery 22.

[0170] In some embodiments, the charging management module 133, the charging management module 21, the charging management module 302, the charging management module 402, etc. may also include a communication module. In some embodiments, the communication module in the charging management module 133 or the charging management module 21 can be delayed to enable, so that the charging management module 133 or the charging management module 21 delays the preset time length before initiating handshake communication.

[0171] In some embodiments, the device to be charged and the device to be charged can communicate via wireless communication to achieve data transmission during the wireless charging process, such as information exchange and instruction transmission. In some embodiments of the present application, the wireless communication method includes but is not limited to Bluetooth communication, Wireless Fidelity (WiFi) communication, short-range wireless communication based on high carrier frequency, optical communication, ultrasonic communication, ultra-wideband communication, mobile communication, etc.

[0172] In some embodiments, the transmitting coil Q1, the coupling coil 12, etc. can also be shared as a communication antenna, such as an NFC (Near Field communication) function antenna, and data can be transmitted between the device to be charged and the device to be charged through the transmitting coil and the receiving coil.

[0173] In some embodiments, the wireless charging method between the device to be charged and the device to be charged may be electromagnetic induction (also known as magnetic coupling), radio wave, and electromagnetic resonance. Currently, the wireless charging standards used between the device to be charged and the device to be charged include the Qi standard, the PowerMatters Alliance (PMA) standard, and the Alliance for Wireless Power (A4WP). The Qi and PMA standards both use electromagnetic induction for wireless charging, while the A4WP standard uses electromagnetic resonance for wireless charging.

[0174] See also Figure 17 , is another structural block diagram of the wireless charging system 200 in some embodiments of the present application.

[0175] like Figure 17 As shown, the wireless charging system 200 includes an electronic device 300 and the protective case assembly 100 described in any of the above embodiments, and further includes another electronic device 500. That is, in some embodiments, the wireless charging system 200 may further include another electronic device 500.

[0176] Among them, the electronic device 300 and the other electronic device 500 both have wireless charging functions, the electronic device 300 includes a charging coil 301, and the protective shell 1 of the protective shell assembly 100 is used to be mounted on the electronic device 300, and when the protective shell 1 is mounted on the electronic device 300, the coupling coil 12 of the protective shell 1 and the charging coil 301 of the electronic device 300 are at least partially opposite and coupled to each other.

[0177] As mentioned above, the coupling coil 12 and the charging coil 301 of the electronic device 300 can be substantially parallel and substantially facing each other, thereby enabling AC energy to be transmitted with higher efficiency and effectively reducing losses.

[0178] The other electronic device 500 includes a charging coil 501. When the electronic device 300, encased in the protective case 1, charges the other electronic device 500, the charging coil 301 of the electronic device 300 is coupled to the coupling coil 12 and the charging coil 501. For example, the charging coil 301, the coupling coil 12, and the charging coil 501 can all be substantially parallel and substantially facing each other, thereby enabling AC energy to be transmitted with high efficiency and effectively reducing losses.

[0179] Among them, when the other electronic device 500 is present, the electronic device 300 can charge the other electronic device 500, and the electronic device 300 can turn on the reverse charging function to control the charging coil 301 to transmit wireless energy. The charging coil 501 in the other electronic device 500 acts as a receiving coil, and couples and receives the wireless energy transmitted by the charging coil 301 to charge the battery in the other electronic device 500. At this time, the coupling coil 12 in the protective shell 1 can also couple to obtain a portion of the AC power. The charging management module 133 or the charging management module 21 can convert the AC power obtained by coupling the coupling coil 12 into DC power to charge the battery in the functional device 2 housed in the protective shell 1.

[0180] That is, when the electronic device 300 with the protective case 1 turns on the reverse charging function to charge the other electronic device 500, the other electronic device 500 and the functional device 2 in the protective case assembly 100 can both be charged.

[0181] In some embodiments, as described above, when the coupling coil 12 receives the AC power, the charging management module 133 or the charging management module 21 in the protective case assembly 100 delays for a preset period of time to perform handshake communication with the device where the transmitting coil Q1 is located, such as the electronic device 300. Thus, the electronic device 300 can first perform handshake communication with the other electronic device 500 and establish communication with the other electronic device 500. Therefore, the normal reverse charging process of the electronic device 300 to the other electronic device 500 will not be affected.

[0182] The other electronic device 500 may be any device with wireless charging capabilities, such as a mobile phone, a tablet computer, or an e-book. The other electronic device 500 may be the same type as or different from the electronic device 300. For example, the electronic device 300 and the other electronic device 500 may both be mobile phones. In another example, the electronic device 300 may be a mobile phone, and the other electronic device 500 may be a tablet computer.

[0183] Therefore, the wireless charging system 200 of the present application can be applied to a variety of scenarios through the protective shell assembly 100, and can charge the functional device 2 in the protective shell assembly 100 without affecting the original charging in a variety of scenarios, making charging more convenient and quick.

[0184] See also Figure 18 , is a flow chart of a charging control method in some embodiments of the present application. In some embodiments, the charging control method is applied to at least a protective shell assembly, the protective shell assembly includes a protective shell, and also includes a functional device for being accommodated in the accommodating structure of the protective shell, the protective shell includes a coupling coil, and the protective shell or the functional device includes a charging management module. Figure 18 As shown, the charging control method includes:

[0185] 181: When the coupling coil receives the AC power transmitted by the transmitting coil, the charging management module delays for a preset time to communicate with the device where the transmitting coil is located.

[0186] Therefore, when the electronic device or other electronic device is the charged object, the electronic device or other electronic device first performs handshake communication with the device where the transmitting coil is located. When the communication is successfully established, the charging management module 133 or the charging management module 21 delays the preset time to perform handshake communication with the device where the transmitting coil is located, and then will be ignored. Therefore, it can avoid affecting the normal charging of the electronic device and the communication of other electronic devices during the reverse charging process.

[0187] In some embodiments, the charging control method further includes: obtaining battery status information of the functional device; when the battery status information of the functional device meets the requirements, converting the AC power received by the coupling coil into DC power, and transmitting it to the functional device through the two output terminals to charge the functional device.

[0188] In some embodiments, the charging control method further includes: performing handshake communication with the device where the transmitting coil is located to establish a communication connection; after successfully establishing the communication connection, transmitting the battery status information of the functional device to the device where the transmitting coil is located, so that the device where the transmitting coil is located can determine whether to start charging.

[0189] In some embodiments, the protective case is used to be mounted on an electronic device. When the electronic device has a wireless charging function, the device where the transmitting coil is located includes the electronic device; when the protective case is placed on a wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand; when the protective case is mounted on the electronic device and the electronic device has a wireless charging function, and the protective case is also placed on the wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand.

[0190] The protective case assembly to which the charging control method is applied may be the protective case assembly 100 in any of the aforementioned embodiments. The steps in the charging control method correspond to the functional operations performed by the charging management module 133 or the charging management module 21 of the aforementioned protective case assembly 100. For more specific steps, refer to the functional operations performed by the charging management module 133 or the charging management module 21 of the aforementioned protective case assembly 100, which will not be repeated here.

[0191] In some embodiments, the charging control method can also be applied to the aforementioned wireless charging system 200. The steps in the charging control method correspond to the functional operations performed by the various charging management modules in the aforementioned wireless charging system 200. For more specific steps, please refer to the functional operations performed by the various charging management modules in the aforementioned wireless charging system 200.

[0192] The protective case 1, protective case assembly 100, wireless charging system 200 and charging control method of the present application can accommodate functional devices by providing a housing structure on the protective case 1, and the protective case 1 also includes a coupling coil that can be coupled with a transmitting coil, and the functional device can be accommodated in the housing structure 11, and when the transmitting coil transmits AC power, the AC power is received for charging the functional device. Therefore, there is no need to prepare an additional charger for the functional device, which facilitates the charging of the functional device, and the functional device is accommodated in the housing structure of the protective case 1, which also facilitates the portability of the functional device. In the present application, when the coupling coil receives the AC power transmitted by the transmitting coil, the charging management module of the protective case assembly delays the communication with the device where the transmitting coil is located for a preset period of time, which can avoid affecting the normal charging of the electronic device and the communication of other electronic devices during the reverse charging process.

[0193] Among them, each embodiment of the present application may have its own focus. For content that is not described in detail in some embodiments, please refer to the relevant content of other embodiments.

[0194] The above description is only 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 any person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application; the embodiments of this application and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A protective case for an electronic device, characterized in that: The protective shell includes: An accommodating structure for accommodating a functional device; The coupling coil is used to be electrically connected to the functional device when the functional device is accommodated in the accommodating structure. The coupling coil is also used to receive the AC power when coupled with a transmitting coil and the transmitting coil transmits AC power, so as to charge the functional device.

2. The protective case according to claim 1, wherein: The coupling coil includes a first end and a second end, and the first end and the second end are used to be electrically connected to the two charging terminals of the functional device when the functional device is accommodated in the accommodating structure, and when receiving the AC power transmitted by the transmitting coil, the first end and the second end are used to input the AC power into the functional device to charge the functional device.

3. The protective case according to claim 1, wherein: The protective shell also includes a charging-related module, which is connected to the coupling coil. When the functional device is accommodated in the accommodating structure, the charging-related module is coupled to the functional device. The coupling coil is electrically connected to the functional device through the charging-related module. When the coupling coil receives AC power, the charging-related module transmits the AC power to the functional device, or converts the AC power into DC power and then transmits it to the functional device to charge the functional device.

4. The protective case according to claim 3, characterized in that: The charging-related module includes a relay coil and a resonant circuit. The two ends of the relay coil are electrically connected to the two ends of the coupling coil respectively. The resonant circuit is located in the connection path where one end of the relay coil is connected to one end of the coupling coil. When the functional device is accommodated in the accommodating structure, the relay coil is coupled with the receiving coil of the functional device. When the coupling coil receives AC power, the relay coil cooperates with the resonant circuit to receive the AC power. The relay coil also couples and transmits the AC power to the receiving coil of the functional device to charge the functional device.

5. The protective case according to claim 4, characterized in that: The resonant circuit includes an LC resonant circuit.

6. The protective case according to claim 4, characterized in that: The receiving coil has a smaller size than the coupling coil.

7. The protective case according to claim 3, characterized in that: The charging-related module includes a charging management module, which includes two input terminals and two output terminals. The two input terminals are respectively connected to the two ends of the coupling coil, and the two output terminals are used to be electrically connected to the two charging terminals of the functional device when the functional device is accommodated in the accommodating structure. The charging management module is used to convert the AC power received by the coupling coil into DC power, and transmit it to the functional device through the two output terminals to charge the functional device.

8. The protective case according to claim 7, characterized in that: When the coupling coil receives the AC power, the charging management module delays for a preset time to perform handshake communication with the device where the transmitting coil is located.

9. The protective case according to claim 7, wherein: The charging management module is also used to obtain battery status information of the functional device when the functional device is accommodated in the accommodating structure, and when it is determined that the battery status of the functional device meets the requirements based on the battery status information, convert the AC power received by the coupling coil into DC power, and transmit it to the functional device through the two output terminals to charge the functional device.

10. The protective case according to claim 7, wherein: The charging management module is further configured to perform handshake communication with the device where the transmitting coil is located to establish a communication connection, and after successfully establishing the communication connection, transmit the battery status information of the functional device to the device where the transmitting coil is located, so that the device where the transmitting coil is located can determine whether to start charging.

11. The protective case according to claim 1, wherein: When the protective case is mounted on the electronic device and the electronic device has a wireless charging function, the transmitting coil includes the charging coil of the electronic device; when the protective case is placed on a wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand; when the protective case is mounted on the electronic device and the electronic device has a wireless charging function, and the protective case is also placed on the wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand.

12. The protective case according to any one of claims 1 to 11, characterized in that: The protective shell includes a protective shell body, which includes a bottom plate and side plates surrounding the bottom plate. The coupling coil is arranged on the bottom plate, and the accommodating structure is arranged on the outer side walls of the bottom plate and / or the side plates.

13. The protective case according to claim 12, wherein: The coupling coil is embedded in the bottom plate.

14. The protective case according to any one of claims 1 to 11, characterized in that: The accommodating structure includes an accommodating cavity with at least one end open and a trigger mechanism. The accommodating cavity is used to accommodate the functional device. The trigger mechanism is used to be in a triggered state when the functional device is accommodated in the accommodating cavity, so that when the protective shell is placed on the electronic device, the electronic device can recognize that the functional device has been accommodated in the accommodating structure.

15. A protective shell assembly, characterized in that: The protective shell assembly includes the protective shell according to any one of claims 1 to 14, and further includes a functional device for being accommodated in the accommodating structure of the protective shell.

16. The protective shell assembly according to claim 15, wherein: When the coupling coil is used to input the AC power into the functional device to charge the functional device, the functional device includes a charging management module and a battery. The charging management module is connected between two charging terminals and the battery, and when receiving the AC power transmitted by the coupling coil, the module converts the AC power into DC power to charge the battery.

17. The protective shell assembly according to claim 15, wherein: When the protective shell includes a coupling coil, a relay coil and a resonant circuit, the functional device includes a receiving coil, a charging management module and a battery. The charging management module is connected between the receiving coil and the battery. The relay coil is coupled to the receiving coil of the functional device. When the coupling coil receives AC power, the relay coil cooperates with the resonant circuit to receive the AC power. The relay coil couples and transmits the AC power to the receiving coil of the functional device. The charging management module converts the AC power into DC power to charge the battery.

18. The protective shell assembly according to claim 15, wherein: When the protective shell includes a coupling coil and a charging management module, the functional device includes two charging terminals and a battery, and the two output terminals of the charging management module are electrically connected to the two charging terminals of the functional device respectively. The charging management module is used to convert the AC power received by the coupling coil into DC power, and transmit it to the two charging terminals of the functional device through the two output terminals to charge the battery of the functional device.

19. A wireless charging system, characterized in that: It comprises an electronic device and a protective shell assembly as described in any one of claims 15 to 18, wherein the protective shell of the protective shell assembly is used to be mounted on the electronic device, and the electronic device has a wireless charging function.

20. The wireless charging system according to claim 19, wherein: The wireless charging system further comprises a wireless charging stand. When the electronic device covered with the protective shell is placed on the wireless charging stand, the electronic device and the functional device in the protective shell assembly are both charged.

21. The wireless charging system according to claim 19, wherein: The wireless charging system also includes another electronic device. When the electronic device with a protective shell turns on the reverse charging function to charge the other electronic device, the other electronic device and the functional device in the protective shell assembly are both charged.

22. A charging control method, applied to at least a protective shell assembly, the protective shell assembly comprising a protective shell and a functional device for being accommodated in a receiving structure of the protective shell, the protective shell comprising a coupling coil, and the protective shell or the functional device comprising a charging management module, characterized in that: The charging control method includes: When the coupling coil receives the AC power transmitted by the transmitting coil, the charging management module delays for a preset time to communicate with the device where the transmitting coil is located.

23. The charging control method according to claim 22, wherein: The charging control method further includes: Obtaining battery status information of the functional device; When the battery status information of the functional device meets the requirements, the AC power received by the coupling coil is converted into DC power and transmitted to the functional device through the two output terminals to charge the functional device.

24. The charging control method according to claim 22, wherein: The charging control method further includes: Performing handshake communication with the device where the transmitting coil is located to establish a communication connection; After the communication connection is successfully established, the battery status information of the functional device is transmitted to the device where the transmitting coil is located, so that the device where the transmitting coil is located can determine whether to start charging.

25. The charging control method according to claim 22, wherein: The protective case is used to be mounted on an electronic device. When the electronic device has a wireless charging function, the device where the transmitting coil is located includes the electronic device; when the protective case is placed on a wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand; when the protective case is mounted on the electronic device and the electronic device has a wireless charging function, and the protective case is also placed on the wireless charging stand, the transmitting coil includes the transmitting coil of the wireless charging stand.

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