Terminal device and protective case

Abstract

This disclosure provides a terminal device and a protective casing, belonging to the field of communication technology. The terminal device includes: a body, a first coil, a second coil, and a shielding component. The body includes a rear cover; the first coil is located inside the body; the second coil is located inside the body, near the rear cover, and at least partially overlaps with the first coil; the shielding component covers the side of the first and second coils away from the rear cover and is located outside the overlapping portion of the first and second coils, with the first and second coils being unshielded. The shielding component in this terminal device not only effectively shields the first and second coils but also does not interfere with the overlapping portion of the first and second coils.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a terminal device and a protective casing. Background Technology

[0002] With the rapid development of communication technology, terminal devices use coils to achieve functions such as wireless charging and NFC (Near Field Communication). Taking wireless charging coils and NFC coils as examples, shielding is usually placed on both to prevent interference. However, when the wireless charging coil and NFC coil overlap, the shielding of one coil or the other will affect the normal operation of the other coil. Summary of the Invention

[0003] This disclosure provides a terminal device and protective housing that do not interfere with the overlapping portion of the coil.

[0004] According to a first aspect of this disclosure, a terminal device is provided, the terminal device comprising:

[0005] The fuselage, including the rear cover;

[0006] The first coil is located inside the fuselage;

[0007] The second coil is located inside the fuselage and on the side close to the rear shell, and the second coil at least partially overlaps with the first coil;

[0008] A shielding element covers the side of the first coil and the second coil away from the rear housing and is located outside the overlapping portion of the first coil and the second coil, with the first coil and the second coil being unshielded.

[0009] Optionally, the second coil includes: an overlapping portion that overlaps with the first coil and a non-overlapping portion that is offset from the first coil;

[0010] The shielding component includes: a first sub-shielding component that covers the side of the first coil away from the rear shell;

[0011] The second sub-shielding member covers the side of the non-overlapping portion that faces away from the rear shell.

[0012] Optionally, the first sub-shield and the second sub-shield are provided separately.

[0013] Optionally, the first sub-shield and the second sub-shield are an integral structure.

[0014] Optionally, the thickness of the shielding member relative to the overlapping portion is greater than the thickness of the shielding member relative to the non-overlapping portion.

[0015] Optionally, the second coil completely overlaps with the first coil, and the shielding covers the side of the first coil away from the rear housing.

[0016] Optionally, the projection of the shield onto the first coil completely covers the first coil, and the projection of the shield onto the second coil completely covers the second coil.

[0017] Optionally, the terminal device further includes:

[0018] A first switch is provided inside the body, which is used to control the energization of the first coil.

[0019] Optionally, the terminal device further includes:

[0020] A second switch is provided inside the body, which is used to control the power supply to and from the second coil.

[0021] According to a second aspect of this disclosure, a terminal device is provided, the terminal device comprising:

[0022] The fuselage, including the rear cover;

[0023] The first coil is located inside the fuselage;

[0024] A shielding element covers the side of the first coil away from the rear housing, and the first coil is not shielded from the other coils;

[0025] A first wireless charging interface is disposed on the device body and is used to receive current emitted by the wireless charging coil; and / or to send current to the wireless charging coil.

[0026] Optionally, the wireless charging coil is located in another device used in conjunction with the terminal device.

[0027] Optionally, the first coil includes: an overlapping portion that overlaps with other coils and a non-overlapping portion that is offset from other coils;

[0028] The thickness of the shielding member relative to the overlapping portion is greater than the thickness of the shielding member relative to the non-overlapping portion.

[0029] Optionally, the projection of the shield onto the first coil completely covers the first coil.

[0030] Optionally, the terminal device further includes: a first switch disposed within the terminal device, used to control the energization of the first coil.

[0031] Optionally, the first wireless charging interface is a Mini USB interface, a Micro USB interface, a Dock interface, a Lightning interface, or a Type-C interface.

[0032] According to a third aspect of this disclosure, a protective shell is provided, the protective shell comprising:

[0033] The housing, including the outer surface;

[0034] A wireless charging coil is located inside the housing and on the side close to the outer surface;

[0035] A shielding element covers the side of the wireless charging coil away from the outer surface, and the coverage area is located outside the overlapping part of the working surface of the wireless charging coil and other coils. The wireless charging coil is not shielded from other coils.

[0036] A second wireless charging interface is provided on the housing for receiving current emitted by the wireless charging coil; and / or for sending current to the wireless charging coil.

[0037] Optionally, the coverage area is located at:

[0038] The working surface of the wireless charging coil, excluding the overlapping portion with other coils disposed within the protective casing; and / or

[0039] The working surface of the wireless charging coil is outside the overlapping portion of other coils installed in other devices that cooperate with the protective shell.

[0040] Optionally, the protective housing further includes a second switch disposed within the housing for controlling the power supply to and from the wireless charging coil.

[0041] Optionally, the second wireless charging interface is a Mini USB interface, a Micro USB interface, a Dock interface, a Lightning interface, or a Type-C interface.

[0042] The terminal device provided in this disclosure has at least the following beneficial effects:

[0043] By covering the side of the first and second coils away from the back cover with a shield, the first and second coils can be shielded and protected. Moreover, the shield is located outside the overlapping part of the first and second coils, and the first and second coils are not shielded, so that the shield will not interfere with the overlapping part of the first and second coils. Attached Figure Description

[0044] Figure 1 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure;

[0045] Figure 2 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure;

[0046] Figure 3 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure;

[0047] Figure 4 The diagram shown is a circuit diagram of the first coil according to an exemplary embodiment of this disclosure;

[0048] Figure 5 The diagram shown is a circuit diagram of the second coil according to an exemplary embodiment of this disclosure;

[0049] Figure 6 The diagram shown is a cross-sectional schematic of a terminal device in conjunction with other devices according to an exemplary embodiment of this disclosure.

[0050] Figure 7 The diagram shown is a circuit diagram of the first coil according to an exemplary embodiment of this disclosure;

[0051] Figure 8 The diagram shown is a cross-sectional schematic of a protective casing and a terminal device according to an exemplary embodiment of this disclosure.

[0052] Figure 9 The diagram shown is a circuit diagram of a wireless charging coil according to an exemplary embodiment of this disclosure;

[0053] Figure 10 The diagram shown is a cross-sectional view of a terminal device and a protective case according to an exemplary embodiment of this disclosure. Detailed Implementation

[0054] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0055] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms “comprising” or “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” or “linked,” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0056] The singular forms “a,” “the,” and “the” used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0057] In some embodiments, the terminal device includes a body, a first coil, and a second coil. The body includes a rear cover, and both the first and second coils are disposed within the body, with the first coil located away from the rear cover. Along the direction pointing towards the rear cover, at least a portion of the second coil overlaps with the first coil. The first coil is covered by a first shielding element, and the second coil is covered by a second shielding element. In the overlapping portion of the first and second coils, a portion of the second shielding element is located between the overlapping portions of the first and second coils, which will shield and interfere with the first coil, affecting its normal operation. To solve this technical problem, embodiments of this disclosure provide a terminal device and a protective casing.

[0058] Figure 1 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure; Figure 2 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure; Figure 3 The diagram shown is a cross-sectional schematic of a terminal device according to an exemplary embodiment of this disclosure; Figure 4 The diagram shown is a circuit diagram of the first coil according to an exemplary embodiment of this disclosure; Figure 5 The diagram shown is a circuit diagram of the second coil according to an exemplary embodiment of this disclosure; Figure 6 The diagram shown is a cross-sectional schematic of a terminal device in conjunction with other devices according to an exemplary embodiment of this disclosure. Figure 7 The diagram shown is a circuit diagram of the first coil according to an exemplary embodiment of this disclosure; Figure 8 The diagram shown is a cross-sectional schematic of a protective casing and a terminal device according to an exemplary embodiment of this disclosure.

[0059] Figure 9 The diagram shown is a circuit diagram of a wireless charging coil according to an exemplary embodiment of this disclosure;

[0060] Figure 10 The diagram shown is a cross-sectional view of a terminal device and a protective case according to an exemplary embodiment of this disclosure.

[0061] According to a first aspect of the embodiments of this disclosure, a terminal device is provided, such as... Figure 1 As shown, the terminal device 100 includes: a body 110, a first coil 120, a second coil 130, and a shielding member 140. The body 110 includes a rear shell 111. The first coil 120 is located inside the body 110, and the second coil 130 is located inside the body 110, near the side of the rear shell 111. The second coil 130 at least partially overlaps with the first coil 120. The shielding member 140 covers the side of the first coil 120 and the second coil 130 away from the rear shell 111 and is located outside the overlapping portion of the first coil 120 and the second coil 130. The first coil 120 and the second coil 130 are unshielded.

[0062] It should be noted that the second coil 130 at least partially overlaps with the first coil 120 in the direction pointing towards the rear shell 111.

[0063] The terminal device 100 provided in this embodiment has a shielding member 140 covering the side of the first coil 120 and the second coil 130 away from the rear shell 111, thereby providing shielding protection for the first coil 120 and the second coil 130. Furthermore, the shielding member 140 is located outside the overlapping portion of the first coil 120 and the second coil 130, and the first coil 120 and the second coil 130 are not shielded together, ensuring that the shielding member 140 does not interfere with the overlapping portion of the first coil 120 and the second coil 130. In addition, since this embodiment does not place the shielding member 140 between the overlapping portion of the first coil 120 and the second coil 130, the amount of shielding material used is reduced, which helps to reduce production costs.

[0064] In this embodiment of the disclosure, the terminal device 100 may be a mobile phone, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0065] The body 110 may include a middle frame and a rear shell 111. The front of the middle frame is provided with a display surface, and the rear shell 111 covers the back of the middle frame, and a cavity is formed between the middle frame and the rear shell 111 for accommodating components such as the first coil 120, the second coil 130, and the shielding member 140.

[0066] The first coil 120 and the second coil 130 can be metal traces or metal windings. Both can be functional coils. For example, the first coil 120 can be an NFC coil, and the second coil 130 can be a wireless charging coil.

[0067] The material of the shielding component 140 can be a magnetic shielding material such as nanocrystalline material, ferrite material, or amorphous material, so as to give the shielding component 140 magnetic shielding function.

[0068] In this embodiment of the disclosure, the second coil 130 at least partially overlaps with the first coil 120 in the direction pointing toward the rear shell 111 of the fuselage 110, including the following two examples:

[0069] As a first example, such as Figure 1 or Figure 2 As shown, the second coil 130 includes an overlapping portion that overlaps with the first coil 120 and a non-overlapping portion that is offset from the first coil 120; the shield 140 includes a first sub-shield 141 that covers the side of the first coil 120 away from the rear shell 111; and a second sub-shield 142 that covers the side of the non-overlapping portion away from the rear shell 111.

[0070] The materials of the first sub-shielding member 141 and the second sub-shielding member 142 can be the same or different. The first sub-shielding member 141 and the second sub-shielding member 142 can be flexible films or rigid films. This embodiment does not specifically limit them, and the choice can be made according to the actual design.

[0071] In one embodiment, such as Figure 2 As shown, the first sub-shield 141 and the second sub-shield 142 are set separately so that they can be flexibly installed in the fuselage 110 respectively.

[0072] The first sub-shield 141 can cover and be bonded to the first coil 120, and the second sub-shield 142 can also cover and be bonded to the second coil 130. Alternatively, the first sub-shield 141 and the first coil 120 can be spaced apart, and the second sub-shield 142 and the second coil 130 can be spaced apart. By providing a spacer, such as a film layer, between the first sub-shield 141 and the first coil 120, the first sub-shield 141 and the first coil 120 can be spaced apart. Similarly, by providing a spacer, such as a film layer, between the second sub-shield 142 and the second coil 130, the second sub-shield 142 and the second coil 130 can be spaced apart.

[0073] In one embodiment, such as Figure 1 As shown, the first sub-shielding component 141 and the second sub-shielding component 142 are an integral structure, which reduces the manufacturing process and makes it easier to place the shielding component 140 inside the machine body 110, thereby improving production efficiency.

[0074] In one embodiment, the thickness of the shielding member 140 relative to the overlapping portion is greater than the thickness of the shielding member 140 relative to the non-overlapping portion. It is understood that, as Figure 2 As shown, the thickness of the first sub-shield 141 relative to the overlapping portion is greater than the thickness of the first sub-shield 141 relative to the non-overlapping portion. When the first coil 120 and the second coil 130 overlap and the magnetic field is enhanced, they are prone to mutual interference with the outside world. The above arrangement enables the shield 140 to effectively shield and protect the overlapping portion of the first coil 120 and the second coil 130.

[0075] As a second example, such as Figure 3 As shown, the second coil 130 completely overlaps with the first coil 120, and the shield 140 covers the side of the first coil 120 that is away from the rear housing 111. In this case, it is only necessary to provide the shield 140 on the side of the first coil 120 that is away from the rear housing 111.

[0076] In both examples described above, the projection of the shielding member 140 onto the first coil 120 can completely cover the first coil 120, and the projection of the shielding member 140 onto the second coil 130 can completely cover the second coil 130. This allows the shielding member 140 to effectively shield and protect both the first coil 120 and the second coil 130. Alternatively, the projection of the shielding member 140 onto the first coil 120 can be located outside the first coil 120, and the projection of the shielding member 140 onto the second coil 130 can be located outside the second coil 130. This not only provides effective shielding and protection for the first coil 120 and the second coil 130, but also facilitates shielding and protection for other components in the terminal device 100.

[0077] In one embodiment, such as Figure 4As shown, the terminal device 100 provided in this embodiment further includes a first switch 150 disposed within the body 110, which controls the power supply to the first coil 120. Since no shielding member 140 is provided between the overlapping portions of the first coil 120 and the second coil 130, mutual interference between the first coil 120 and the second coil 130 is inevitable. When the first coil 120 is not working, the first switch 150 can be controlled to de-energize it, preventing current from flowing through the first coil 120, thus preventing the first coil 120 from affecting the second coil 130 and other coils. When the first coil 120 is working, the first switch 150 is energized, causing the first coil 120 to operate. It should be noted that the circuit containing the first coil 120 is electrically connected to the control circuit, and the first switch 150 can be controlled to turn on and off through the control circuit.

[0078] In one embodiment, such as Figure 5 As shown, the terminal device 100 provided in this embodiment further includes a second switch 160 disposed within the body 110. The second switch 160 is used to control the power supply to and from the second coil 130. When the second coil 130 is not working, the second switch 160 can be controlled to de-energize, preventing current from flowing through the second coil 130, thus preventing the second coil 130 from affecting the first coil 120 and other coils. When the second coil 130 is working, the second switch 160 is energized, causing the second coil 130 to work. Similarly, the circuit containing the second coil 130 is electrically connected to the control circuit, and the second switch 160 can be controlled to be energized and de-energized through the control circuit.

[0079] Furthermore, one or more capacitors can be placed in the circuit containing the first coil 120, forming a resonant circuit with the first coil 120. Similarly, one or more capacitors can be placed in the circuit containing the second coil 130, forming a resonant circuit with the second coil 130. The resonant circuit can improve voltage waveform distortion and prevent malfunctions in other circuits connected to the first coil 120 or the second coil 130.

[0080] In this embodiment of the disclosure, the number of first coils 120 can be one or more, and the number of second coils 130 can be one or more. When the number of first coils 120 and second coils 130 is greater than or equal to three, the arrangement of the shield 140 is similar to that in the above embodiment, and will not be repeated here.

[0081] The terminal device 100 provided in this embodiment is not limited by the functions of the first coil 120 and the second coil 130. When the first coil 120 and the second coil 130 are electrically connected and cooperate to realize the NFC function or the wireless charging function, or when the first coil 120 has the NFC function and the wireless charging function, the arrangement of the first coil 120, the second coil 130 and the shield 140 is similar to that in the above embodiment, and will not be repeated here.

[0082] According to a second aspect of this disclosure, a terminal device is provided, such as... Figure 6 As shown, the terminal device 200 includes: a body 210, a first coil 220, a shielding member 230, and a first wireless charging interface 240. The body 210 includes a rear shell 211; the first coil 220 is located inside the body 210; the shielding member 230 covers the side of the first coil 220 facing away from the rear shell 211, and the first coil 220 is not shielded from other coils; the first wireless charging interface 240 is disposed on the body 210 and is used to receive current emitted by the wireless charging coil 210; and / or to send current to the wireless charging coil 310.

[0083] The terminal device 200 provided in this embodiment has a shielding member 230 covering the side of the first coil 220 away from the rear cover 211 to provide shielding protection for the first coil 220. Furthermore, the first coil 220 is not shielded from other coils, ensuring that the overlapping portions between the first coil 220 and other coils are not subject to shielding interference.

[0084] In this embodiment of the disclosure, the first coil 220 can be an NFC coil, and the other coils can be wireless charging coils 310.

[0085] In one embodiment, such as Figure 6 As shown, the wireless charging coil 310 is located within another device used in conjunction with the terminal device 200. For example, the wireless charging coil 310 is located inside a protective case 300, which allows the terminal device 200 to be wirelessly charged.

[0086] The first wireless charging interface 240 is connected to the internal circuitry of the terminal device 200, allowing current to be supplied to and / or supplied to the internal circuitry of the terminal device 200. In one embodiment, the first wireless charging interface 240 is a Mini USB (Mini Universal Serial Bus) interface, a Micro USB interface, a Dock interface, a Lightning interface, or a Type-C interface. By connecting the protective case 300 to the first wireless charging interface 240 of the terminal device 200 using a charging cable or other cable, the wireless charging coil 310 can transmit current to and / or the first wireless charging interface 240 can transmit current to the wireless charging coil 310. It should be noted that the first wireless charging interface 240 can be the terminal device 200's own charging interface.

[0087] In one embodiment, the first coil 220 includes: an overlapping portion that overlaps with other coils and a non-overlapping portion that is offset from other coils; the thickness of the shield 230 opposite the overlapping portion is greater than the thickness of the shield 230 opposite the non-overlapping portion, see [reference]. Figure 6 When the first coil 220 and the wireless charging coil 310 overlap and the magnetic field is enhanced, they are prone to mutual interference with the outside world. The above-mentioned arrangement enables the shielding member 230 to effectively shield and protect the overlapping part of the first coil 220 and the wireless charging coil 310.

[0088] In one embodiment, the projection of the shield 230 onto the first coil 220 completely covers the first coil 220. This allows the shield 230 to effectively shield and protect the first coil 220. Of course, the projection of the shield 230 onto the first coil 220 can be located outside the first coil 220 to shield and protect other components in the terminal device 200.

[0089] In one embodiment, such as Figure 7 As shown, the terminal device 200 also includes a first switch 250 disposed within the terminal device 200, used to control the power supply to and from the first coil 220. When the first coil 220 is not working, the first switch 250 can be controlled to de-energize, preventing current from flowing through the first coil 220, thus preventing the first coil 220 from affecting the wireless charging coil 310 and other coils. When the first coil 220 is working, the first switch 250 is controlled to energize, causing the first coil 220 to work. The circuit containing the first coil 220 can be a resonant circuit; for details, please refer to the corresponding description of the first coil 120 in the first aspect of this disclosure, which will not be repeated here.

[0090] A protective shell is provided according to a third aspect of this disclosure, such as Figure 8 As shown, the protective case 400 includes: a housing 410, a wireless charging coil 420, a shielding member 430, and a second wireless charging interface 440. The housing 410 includes an outer surface 411; the wireless charging coil 420 is located inside the housing 410 and on the side closest to the outer surface 411; the shielding member 430 covers the side of the wireless charging coil 420 away from the outer surface 411, and the coverage area is located outside the overlapping portion of the working surface of the wireless charging coil 420 with other coils, and the wireless charging coil 420 is not shielded from other coils; the second wireless charging interface 440 is disposed on the housing 410 and is used to receive the current emitted by the wireless charging coil 420; and / or to send current to the wireless charging coil 420.

[0091] The protective shell 400 provided in this embodiment covers the side of the wireless charging coil 420 away from the outer surface 411 with a shielding member 430 to provide shielding protection for the wireless charging coil 420. Furthermore, the coverage area of ​​the shielding member 430 is located outside the overlapping portion between the wireless charging coil 420 and other coils within the working surface of the wireless charging coil 420; the wireless charging coil 420 is not shielded from other coils, ensuring that the overlapping portion between the wireless charging coil 420 and other coils is not subject to shielding interference.

[0092] In one embodiment, the coverage area of ​​the shield 430 is located at:

[0093] The working surface of the wireless charging coil 420 is located outside the overlapping portion with other coils disposed within the protective housing 400; and / or, the working surface of the wireless charging coil 420 is located outside the overlapping portion with other coils disposed within other devices that cooperate with the protective housing 400. These other devices may be terminal devices.

[0094] In one embodiment, such as Figure 9 As shown, the protective housing 400 also includes a second switch 450 disposed within the housing 410, used to control the power supply to and from the wireless charging coil 420. When the wireless charging coil 420 is not working, the second switch 450 can be controlled to open, preventing current from flowing through the wireless charging coil 420, thus preventing the wireless charging coil 420 from affecting other coils. When the wireless charging coil 420 is working, the second switch 450 is controlled to close, enabling the wireless charging coil 420 to operate.

[0095] The second wireless charging interface 440 is connected to the internal circuitry of the protective case 400, allowing current to be supplied to the internal circuitry and / or for the internal circuitry to supply current to the outside. In one embodiment, the second wireless charging interface 440 is a Mini USB interface, MicroUSB interface, Dock interface, Lightning interface, or Type-C interface. By connecting the terminal device to the second wireless charging interface 440 of the protective case 400 using a charging cable or other cable, the wireless charging coil 420 can transmit current to the second wireless charging interface 440, and / or the second wireless charging interface 440 can transmit current to the wireless charging coil 420.

[0096] According to the fourth aspect of this disclosure, an electronic system is provided, such as Figure 10 As shown, the device includes: a terminal device 100 provided in the first aspect of this disclosure and a protective shell 400 provided in the third aspect of this disclosure. The terminal device 100 and the protective shell 400 are used together, and the rear shell 111 of the terminal device 100 is close to or attached to the side of the protective shell 400 that is away from the outer surface 411. The terminal device 100 can be referred to the description in the first aspect of this disclosure, and the protective shell 400 can be referred to the description in the third aspect of this disclosure, which will not be repeated here. It is ensured that the first coil 120, the second coil 130 of the terminal device 100, and the wireless charging coil 420 of the protective shell 400 are all unshielded.

[0097] When the second coil 130 of the terminal device 100 is also a wireless charging coil, the terminal device 100 has a charging interface on its body 110, and the terminal device 100 can be wirelessly charged in the following two ways:

[0098] Method I: Wireless charging of terminal device 100 is performed using protective case 400. The second switch 150 in the circuit containing the wireless charging coil in terminal device 100 is de-energized, so that the wireless charging coil in terminal device 100 is not working. The second switch 450 in the circuit containing the wireless charging coil 420 in protective case 400 is energized, and the second wireless charging interface 440 of protective case 400 is electrically connected to the charging interface of terminal device 100 using a charging cable or other cable, so that protective case 400 wirelessly charges terminal device 100.

[0099] Method II: Wireless charging of terminal device 100 is performed using the wireless charging coil inside terminal device 100. A control chip may be installed in the protective case 400. Terminal device 100 sends a control signal to the control chip, which then de-energizes the second switch 450 of the circuit containing the wireless charging coil 420 within the protective case 400, thus preventing the protective case 400 from wirelessly charging terminal device 100. Alternatively, terminal device 100 can control the second switch 150 of its internal wireless charging coil circuit to energize, thereby enabling wireless charging of terminal device 100.

[0100] According to the fifth aspect of this disclosure, an electronic system is provided, such as Figure 8 As shown, it includes: a terminal device 200 provided in the second aspect of this disclosure and a protective shell 400 provided in the third aspect of this disclosure. The terminal device 200 can be found in the description of the second aspect of this disclosure, and the protective shell 400 can be found in the description of the third aspect of this disclosure. The placement of the shielding element 230 in the terminal device 200 and the shielding element 430 in the protective shell 400 can be found in their respective descriptions, and will not be repeated here. It is ensured that the first coil 220 of the terminal device 200 and the wireless charging coil 420 of the protective shell 400 are both unshielded.

[0101] It should be noted that the terminal device 200 does not include a wireless charging coil, while the protective case 400 includes a wireless charging coil 420. The protective case 400 is used to wirelessly charge the terminal device 200. The second wireless charging interface 440 of the protective case 400 is connected to the first wireless charging interface 240 of the terminal device 200 via a charging cable or other cable, so that the protective case 400 can wirelessly charge the terminal device 200.

[0102] The above description is merely some embodiments of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A terminal device, characterized by comprising: The terminal device includes: The fuselage, including the rear cover; The first coil is located inside the fuselage; The second coil is located inside the fuselage and close to the rear shell. The second coil overlaps with the first coil. In the orthographic projection along the direction pointing to the rear shell, the projection area of ​​the second coil is located within the projection area of ​​the first coil, and the area of ​​the projection area of ​​the second coil is the same as the area of ​​the projection area of ​​the first coil. A shielding element covers the side of the first coil and the second coil away from the rear housing and is located outside the overlapping portion of the first coil and the second coil, wherein the first coil and the second coil are unshielded; the orthographic projection of the shielding element in the direction pointing to the rear housing includes completely covering the overlapping portion of the first coil and the second coil and the non-overlapping portion located outside the first coil and the second coil, and the thickness of the shielding element relative to the overlapping portion is greater than the thickness of the shielding element relative to the non-overlapping portion.

2. The terminal device according to claim 1, characterized by The projection of the shield onto the first coil completely covers the first coil, and the projection of the shield onto the second coil completely covers the second coil.

3. The terminal device according to claim 2, characterized by The projection of the shield onto the first coil is located outside the first coil, and the projection of the shield onto the second coil is located outside the second coil.

4. The terminal device according to claim 1, characterized by The terminal device also includes: A first switch is provided inside the body, which is used to control the energization of the first coil.

5. The terminal device according to any one of claims 1 to 4, characterized by, The terminal device also includes: A second switch is provided inside the body, which is used to control the power supply to and from the second coil.

6. A terminal device, characterized by comprising: The terminal device includes: The fuselage, including the rear cover; The first coil is located inside the fuselage; the first coil includes: an overlapping portion that overlaps with other coils, and a non-overlapping portion that is offset from other coils; A shielding element covers the side of the first coil away from the rear housing. The first coil is not shielded from other coils. The projection of the shielding element onto the first coil completely covers the first coil. The thickness of the shielding element relative to the overlapping portion is greater than the thickness of the shielding element relative to the non-overlapping portion. A first wireless charging interface is located on the device body and is used to receive current emitted by the wireless charging coil; and / or to send current to the wireless charging coil, wherein the wireless charging coil is located in other devices used in conjunction with the terminal device.

7. The terminal device according to claim 6, characterized by The terminal device further includes a first switch disposed within the terminal device for controlling the energization of the first coil.

8. A protective case characterized by, The protective shell includes: The casing, including the outer surface; A wireless charging coil is located inside the housing and on the side close to the outer surface; A shielding element covers the side of the wireless charging coil away from the outer surface, and the coverage area is located outside the overlapping part of the working surface of the wireless charging coil with other coils. The wireless charging coil is not shielded from other coils. A second wireless charging interface is provided on the housing for receiving current emitted by the wireless charging coil; and / or for sending current to the wireless charging coil. A second switch located inside the housing is used to control the power supply to and from the wireless charging coil; when the wireless charging coil is not working, the second switch is opened; when the wireless charging coil is working, the second switch is closed.

9. The protective shell according to claim 8, characterized in that, The coverage area is located at: The working surface of the wireless charging coil, excluding the overlapping portion with other coils disposed within the protective casing; and / or The working surface of the wireless charging coil is outside the overlapping portion of other coils installed in other devices that cooperate with the protective shell.

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