Flexible wireless charging device for electronic device having curved surface

Abstract

According to an embodiment, a wireless charging device of an electronic device having an appearance including a curved surface may comprise: a flexible pad including a base portion and a fastening portion extending from the base portion; and a transmission coil disposed on the base portion of the flexible pad and configured to be deformed according to the shape of the base portion of the flexible pad. In a state in which the wireless charging device is coupled to the electronic device, the base portion of the flexible pad may be in contact with the curved surface in a shape corresponding to the curved surface of the electronic device. The fastening portion of the flexible pad may be configured to fix the wireless charging device to the electronic device.

Description

Flexible wireless charging device for curved electronic devices

[0001] The present disclosure relates to a flexible wireless charging device for an electronic device having a curved surface.

[0002] An electronic device may include a battery for providing power to various components of the electronic device. The battery of the electronic device may be charged, for example, using a charging device. For example, the battery may be charged using a wired charging method in which the electronic device and the charging device are physically connected via a cable, or a wireless charging method in which the electronic device and the charging device are not physically connected. The wireless charging method may utilize an electromagnetic induction method, a magnetic resonance method, or an electromagnetic wave method.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the present disclosure.

[0004] In one embodiment, a wireless charging device for an electronic device having an exterior including a curved surface may include: a flexible pad including a base portion and a fastening portion extending from the base portion; and a transmitting coil disposed on the base portion of the flexible pad and configured to be deformed according to a shape of the base portion of the flexible pad. When the wireless charging device is coupled to the electronic device, the base portion of the flexible pad may come into contact with the curved surface of the electronic device in a shape corresponding to the curved surface. The fastening portion of the flexible pad may be configured to secure the wireless charging device to the electronic device.

[0005] In one embodiment, a wireless charging device for a ring device may include a flexible pad including a base portion and a fastening portion extending from the base portion; and a wireless charging coil disposed within the base portion of the flexible pad and configured to be deformed according to a shape of the base portion. When charging the ring device, the base portion of the flexible pad may contact the inner curved surface or the outer curved surface of the ring device in a shape corresponding to the inner curved surface or the outer curved surface opposite to the inner curved surface of the ring device that comes into contact with a user's finger. When charging the ring device, the fastening portion of the flexible pad may be coupled to the ring device such that the wireless charging device is fixed to the ring device.

[0006] FIG. 1A illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0007] FIG. 1b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0008] FIG. 2A is an exploded perspective view of a wireless charging device according to one embodiment.

[0009] FIG. 2b is a plan view of a wireless charging device according to one embodiment.

[0010] FIG. 3A is a diagram illustrating a wireless charging device coupled to an electronic device, according to one embodiment.

[0011] FIG. 3b is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0012] FIG. 3c is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0013] FIG. 3D is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0014] FIG. 4A is a diagram illustrating a wireless charging device coupled to an electronic device, according to one embodiment.

[0015] FIG. 4b is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0016] FIG. 5A is a diagram illustrating a wireless charging device coupled to an electronic device, according to one embodiment.

[0017] FIG. 5b is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0018] FIG. 5c is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0019] FIG. 5D is a diagram illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0020] FIG. 6A illustrates a wireless charging device according to one embodiment.

[0021] FIG. 6b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0022] FIG. 7A illustrates a wireless charging device according to one embodiment.

[0023] FIG. 7b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0024] FIG. 8A illustrates a wireless charging device according to one embodiment.

[0025] FIG. 8b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0026] FIG. 9A illustrates a wireless charging device according to one embodiment.

[0027] FIG. 9b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0028] FIG. 10A illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0029] FIG. 10b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0030] FIG. 11 is a drawing showing a wireless charging device according to one embodiment.

[0031] FIG. 12A illustrates a wireless charging device according to one embodiment.

[0032] FIG. 12b illustrates a wireless charging device according to one embodiment.

[0033] FIG. 12c illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0034] FIG. 12d illustrates a wireless charging device coupled to an electronic device according to one embodiment.

[0035] FIGS. 1A and 1B illustrate a wireless charging device coupled to an electronic device, according to one embodiment.

[0036] Referring to FIGS. 1A and 1B, according to one embodiment, a wireless charging device (10) may be detachably coupled to an electronic device (5). For example, the wireless charging device (10) may be coupled to an electronic device (5) for charging a battery disposed within the electronic device (5).

[0037] The electronic device (5) may include, but is not limited to, a wearable device that can be worn by a user. For example, the electronic device (5) may include a ring device that can be worn on a user's finger. For example, the exterior of the electronic device (5) may be formed at least partially as a curved surface. For example, the exterior of the electronic device (5) may include an inner surface (5A) and an outer surface (5B) that are formed as curved surfaces. For example, the inner surface (5A) may come into contact with the user's body (e.g., a finger) when the electronic device (5) is worn by the user, and the outer surface (5B) may be a surface opposite to the inner surface (5A). The inner surface (5A) and the outer surface (5B) may be referred to as an inner curved surface and an outer curved surface, respectively.

[0038] Although the electronic device (5) is exemplified as a ring device as a wearable device, it is not limited thereto, and the electronic device (5) may include various types of devices. For non-limiting examples, the electronic device (5) may include a portable communication device (e.g., a smartphone), an electronic watch, an HMD (head mounted display) device, a computer device, a portable multimedia device, a portable medical device, a camera, or a home appliance device. The shape of the electronic device (5) is not limited to the illustrated example, and may have various shapes.

[0039] In one embodiment, the wireless charging device (10) may be brought into contact with a curved surface that at least partially shapes the outer surface of the electronic device (5) for charging the battery of the electronic device (5). For example, the wireless charging device (10) may be configured to be deformable. For example, the wireless charging device (10), when coupled with the electronic device (5), may have a shape corresponding to the curved surface of the electronic device (5). For example, as shown in FIG. 1A, the wireless charging device (10) may be deformed to correspond to the inner surface (5A) of the electronic device (5) and may be brought into contact with the inner surface (5A). For example, as shown in FIG. 1B, the wireless charging device (10) may be deformed to correspond to the outer surface (5B) of the electronic device (5) and may be brought into contact with the outer surface (5B). In this respect, the wireless charging device (10) may be referred to as a flexible wireless charging device. However, the exterior of the electronic device (5) with which the wireless charging device (10) comes into contact is not necessarily limited to a curved surface. For example, since the wireless charging device (10) can be deformed according to the exterior shape of the electronic device (5), it can be brought into contact with and fixed to the electronic device (5) to provide power wirelessly without being limited by the exterior shape of the electronic device (5). For example, the wireless charging device (10) can be brought into contact with and fixed to a flat area of ​​the exterior of the electronic device (10) for wireless charging of the electronic device (10).

[0040] In one embodiment, the wireless charging device (10) may be coupled to the electronic device (5) so as to be in contact with the curved surface of the electronic device (5). The wireless charging device (10) coupled to the electronic device (5) may wirelessly transmit power to the electronic device (5). For a non-limiting example, the wireless charging device (10) may be configured to transmit power using an electromagnetic induction method. For a non-limiting example, the wireless charging device (10) may be equipped with a wireless charging interface according to the Qi standard of the Wireless Power Consortium.

[0041] In a comparative example, a wireless charging device having a fixed size, such as a cradle, may be used to charge an electronic device (5). In this case, the wireless charging device of the comparative example cannot support charging of electronic devices (5) having various sizes or curvatures. Accordingly, multiple wireless charging devices may be required for each size of the electronic device (5). According to one embodiment, the wireless charging device (10) can be modified according to the external shape of the electronic device (5) and can support charging of electronic devices (5) having various shapes. Accordingly, unnecessary waste of resources can be reduced and environmental protection can be contributed. In addition, due to the flexible nature of the wireless charging device (10), convenience of use and portability can be improved.

[0042] In one embodiment, the wireless charging device (10) may include one or more fastening structures for attaching and / or detaching the wireless charging device (10) to and / or maintaining the wireless charging device (10) coupled to the electronic device (5). For example, the wireless charging device (10) may include a first fastening structure (11) and / or a second fastening structure (12). The first fastening structure (11) and the second fastening structure (12) are illustrated as being positioned at opposite ends of the wireless charging device (10), but are not limited thereto. With reference to the drawings below, examples of a wireless charging device (10) including the first fastening structure (11) and / or the second fastening structure (12) will be described.

[0043] In the following, duplicate descriptions of components having the same reference numerals as the aforementioned components may be omitted. In the following description, reference numerals in other drawings may be referred to.

[0044] FIG. 2A is an exploded perspective view of a wireless charging device according to one embodiment.

[0045] FIG. 2b is a plan view of a wireless charging device according to one embodiment.

[0046] Referring to FIGS. 2A and 2B, a wireless charging device (10) according to one embodiment may include a flexible pad (20), a coil (25), a first magnet (271), a second magnet (272), a third magnet (273), a fourth magnet (274), a cable assembly (26), and a plug (or adapter) (28). Alternatively, the first magnet (271) may be replaced with a metal or a metal block configured to attract a magnet. Alternatively, the third magnet (273) may be replaced with a metal or a metal block configured to attract a magnet.

[0047] In one embodiment, the flexible pad (20) may include a first layer (21). In one embodiment, the flexible pad (20) may further include a second layer (22). For example, the flexible pad (20) may include the first layer (21) and may not include the second layer (22). The flexible pad (20) may be referred to as a pad, a cover, or a flexible cover of the wireless charging device (10).

[0048] In one embodiment, the first layer (21) and the second layer (22) of the flexible pad (20) may be formed to be flexible and / or elastic. For non-limiting examples, the first layer (21) and / or the second layer (22) of the flexible pad (20) may be formed of a synthetic resin such as polyimide (PI), thermoplastic polyurethane (TPU), artificial leather, or natural leather. For example, the first layer (21) may be formed of substantially the same material as the second layer (22). For example, the first layer (21) may be formed of a different material from the second layer (22).

[0049] In one embodiment, the first layer (21) of the flexible pad (20) may include a base portion (213), a first fastening portion (211), and a second fastening portion (212). The base portion (213) may be positioned between the first fastening portion (211) and the second fastening portion (212). For example, the first fastening portion (211) may be positioned on a first side (e.g., in the third direction (3)) of the base portion (213), and the second fastening portion (212) may be positioned on a second side (e.g., in the fourth direction (4)) of the base portion (213) opposite to the first side. The first fastening portion (211) and the second fastening portion (212) may each extend from the base portion (213). In one embodiment, the base portion (213) of the first layer (21) may be formed integrally with the first fastening portion (211) and / or the second fastening portion (212).

[0050] In one embodiment, the first fastening portion (211) of the first layer (21) may include a central portion (211c), a first end portion (211a), and a second end portion (211b). For example, the central portion (211c) may be connected to the base portion (213). For example, the central portion (211c) may extend from the base portion (213). For example, the central portion (211c) may be positioned between the first end portion (211a) and the second end portion (211b). For example, the first end portion (211a) and the second end portion (211b) may each extend from the central portion (211c). For example, the first end portion (211a) may extend from a first side (e.g., the first side (S1)) of the center portion (211c) in a first direction (1) perpendicular to the longitudinal direction (e.g., the third direction (3) and the fourth direction (4)) of the base portion (213). For example, the second end portion (211b) may extend from a second side (e.g., the second side (S2)) opposite to the first side of the center portion (211c) in a second direction (2) opposite to the first direction (1).

[0051] In one embodiment, the second fastening portion (212) of the first layer (21) may include a central portion (212c), a first end portion (212a), and a second end portion (212b). For example, the central portion (212c) may be connected to the base portion (213). For example, the central portion (212c) may extend from the base portion (213). For example, the central portion (212c) may be positioned between the first end portion (212a) and the second end portion (212b). For example, the first end portion (212a) and the second end portion (212b) may each extend from the central portion (212c). For example, the first end portion (212a) may extend from a first side (e.g., the first side (S3)) of the center portion (212c) in a first direction (1) perpendicular to the longitudinal direction of the base portion (213). For example, the second end portion (212b) may extend from a second side (e.g., the second side (S4)) opposite to the first side of the center portion (212c) in a second direction (2) opposite to the first direction (1).

[0052] In one embodiment, the second layer (22) of the flexible pad (20) may be disposed on the first layer (21). For example, the second layer (22) may be attached to the first layer (21). For example, the second layer (22) may be disposed on the first layer (21) so as to cover at least one of the coil (25), the first magnet (271), the second magnet (272), the third magnet (273), and / or the fourth magnet (274) disposed on the first layer (21).

[0053] For example, the second layer (22) may include at least one of a base portion (223), a first fastening portion (221), and / or a second fastening portion (222). The base portion (223) may be positioned between the first fastening portion (221) and the second fastening portion (222). For example, the first fastening portion (221) may be positioned on a first side (e.g., in the third direction (3)) of the base portion (223), and the second fastening portion (222) may be positioned on a second side (e.g., in the fourth direction (4)) of the base portion (223) opposite to the first side. The first fastening portion (221) and the second fastening portion (222) may each extend from the base portion (223). In one embodiment, the base portion (223) of the second layer (22) may be formed integrally with the first fastening portion (221) and / or the second fastening portion (222).

[0054] In one embodiment, the first fastening portion (221) of the second layer (22) may include at least one of a central portion (221c), a first end portion (221a), and / or a second end portion (221b). For example, the first end portion (221a) of the second layer (22) may be disposed on the first end portion (211a) of the first layer (21) so as to cover the first magnet (271). For example, the second end portion (221b) of the second layer (22) may be disposed on the second end portion (211b) of the first layer (21) so as to cover the second magnet (272). For example, the central portion (221c) may be connected to the base portion (223). For example, the central portion (221c) may extend from the base portion (223). For example, the central portion (221c) may be located between the first end portion (221a) and the second end portion (221b). For example, the first end portion (221a) and the second end portion (221b) may each extend from the central portion (221c). For example, the first end portion (221a) may extend from a first side (e.g., the first side (S1)) of the central portion (221c) in a first direction (1) perpendicular to the longitudinal direction of the base portion (223). For example, the second end portion (221b) may extend from a second side (e.g., the second side (S2)) of the central portion (221c) opposite to the first side in a second direction (2) opposite to the first direction (1).

[0055] In one embodiment, the second fastening portion (222) of the second layer (22) may include at least one of a central portion (222c), a first end portion (222a), and / or a second end portion (222b). For example, the first end portion (222a) of the second layer (22) may be disposed on the first end portion (212a) of the first layer (21) so as to cover the third magnet (273). For example, the second end portion (222b) of the second layer (22) may be disposed on the second end portion (212b) of the first layer (21) so as to cover the fourth magnet (274). For example, the central portion (222c) may be connected to the base portion (223). For example, the central portion (222c) may extend from the base portion (223). For example, the central portion (222c) may be positioned between the first end portion (222a) and the second end portion (222b). For example, the first end portion (222a) and the second end portion (222b) may each extend from the central portion (222c). For example, the first end portion (222a) may extend from a first side (e.g., the first side (S3)) of the central portion (222c) in a first direction (1) perpendicular to the longitudinal direction of the base portion (223). For example, the second end portion (222b) may extend from a second side (e.g., the second side (S4)) of the central portion (222c) opposite to the first side in a second direction (2) opposite to the first direction (1).

[0056] For example, a coil (25) may be placed between the base portion (213) of the first layer (21) and the base portion (223) of the second layer (22). In one embodiment, the coil (25) may be positioned on the neutral axis (or neutral plane) of the wireless charging device (10) to prevent damage due to deformation. For example, a first vertical distance from an outer surface of the first layer (21) (or the base portion (213)) to the coil (25) may be substantially equal to a second vertical distance from an outer surface of the second layer (22) (or the base portion (223)) to the coil (25).

[0057] For example, a first magnet (271) and a second magnet (272) may be disposed between the first fastening portion (211) of the first layer (21) and the first fastening portion (221) of the second layer (22). For example, the first magnet (271) may be disposed between the first end portion (211a) of the first fastening portion (211) of the first layer (21) and the first end portion (221a) of the first fastening portion (221) of the second layer (22). For example, the second magnet (272) may be disposed between the second end portion (211b) of the first fastening portion (211) of the first layer (21) and the second end portion (221b) of the first fastening portion (221) of the second layer (22). Alternatively or optionally, unlike the city, the first magnet (271) or the second magnet (272) may be disposed between the center portion (211c) of the first fastening portion (211) of the first layer (21) and the center portion (221c) of the first fastening portion (221) of the second layer (22). When the first magnet (271) is disposed on the center portion (211c) of the first layer (21), optionally, the flexible pad (20) may not include the first end portion (211a) of the first layer (21) and the second end portion (221a) of the second layer (22) (e.g., to have an L shape rather than a T shape). When the second magnet (272) is placed on the center (211c) of the first layer (21), optionally, the flexible pad (20) may not include the second end (211b) of the first layer (21) and the second end (221b) of the second layer (22) (e.g., to have an L shape rather than a T shape).

[0058] For example, a third magnet (273) and a fourth magnet (274) may be placed between the second fastening portion (212) of the first layer (21) and the second fastening portion (222) of the second layer (22). For example, the third magnet (273) may be placed between the first end portion (212a) of the second fastening portion (212) of the first layer (21) and the first end portion (222a) of the second fastening portion (222) of the second layer (22). For example, the fourth magnet (274) may be placed between the second end portion (212b) of the second fastening portion (212) of the first layer (21) and the second end portion (222b) of the second fastening portion (222) of the second layer (22). Alternatively or optionally, unlike the city, the third magnet (273) or the fourth magnet (274) may be disposed between the center portion (212c) of the second fastening portion (212) of the first layer (21) and the center portion (222c) of the second fastening portion (222) of the second layer (22). When the third magnet (273) is disposed on the center portion (212c) of the first layer (21), optionally, the flexible pad (20) may not include the first end portion (212a) of the first layer (21) and the second end portion (222a) of the second layer (22) (e.g., to have an L shape rather than a T shape). When the fourth magnet (274) is placed on the center (212c) of the first layer (21), optionally, the flexible pad (20) may not include the second end (212b) of the first layer (21) and the second end (222b) of the second layer (22) (e.g., to have an L shape rather than a T shape).

[0059] In one embodiment, the coil (25) may be configured to generate a magnetic field according to an applied current. The coil (25) may be disposed, for example, on a first layer (21) of a flexible pad (20). For example, the coil (25) may be disposed on a base portion (213) of the first layer (21). For example, the coil (25) may be attached to the base portion (213) of the first layer (21). The coil (25) may be formed flexibly. For example, the coil (25) may be configured to deform according to the shape of the base portion (213) to which the coil (25) is attached. The coil (25) may be referred to as a flexible coil, a transmitting coil, or a wireless charging coil.

[0060] In one embodiment, the first magnet (271), the second magnet (272), the third magnet (273), and the fourth magnet (274) may each be disposed on the first layer (21) of the flexible pad (20). For example, the first magnet (271), the second magnet (272), the third magnet (273), and the fourth magnet (274) may each be attached to the first layer (21) of the flexible pad (20). For example, the first magnet (271) may be disposed on the first end (211a) of the first fastening portion (211) of the first layer (21). For example, the second magnet (272) may be disposed on the second end (211b) of the first fastening portion (211) of the first layer (21). For example, the third magnet (273) may be placed on the first end (212a) of the second fastening portion (212) of the first layer (21). For example, the fourth magnet (274) may be placed on the second end (212b) of the second fastening portion (212) of the first layer (21).

[0061] Additionally or optionally, according to one embodiment, the wireless charging device (10) may further include an elastic plate (29). When the elastic plate (29) is included, the elastic plate (29) may be disposed (or attached) on the base portion (213) of the first layer (21), and the coil (25) may be disposed (or attached) on the elastic plate (29). The elastic plate (29) may be formed of metal or a plastic such as carbon fiber reinforced plastic or epoxy. The elastic plate (29) may maintain the wireless charging device (10) in a flat shape when the wireless charging device (10) is separated from the electronic device (5). The elastic plate (29) may be referred to as a stiffener or a reinforcing plate.

[0062] In one embodiment, the cable assembly (26) may include a cable (or conductor) (261) electrically connected to the coil (25) to transmit a power signal, an inner sheath (262) surrounding the cable (261), and an outer sheath (263) surrounding the inner sheath (262). One end of the cable assembly (26) may be connected to the coil (25) and the other end may be connected to a plug (28). For example, the cable assembly (26) and the plug (28) may be directly electrically connected, or may be connected via terminals according to an input / output protocol such as a universal serial bus (USB). Although not shown, the wireless charging device (10) may include one or more circuits for protecting the wireless charging device (10) from overvoltage, overcurrent, or static electricity. One or more of the circuits may be disposed within, for example but not limited to, a cable assembly (26) and / or a plug (28) and electrically connected to the coil (25).

[0063] FIGS. 3A, 3B, 3C, and 3D are drawings illustrating a wireless charging device coupled to an electronic device according to one embodiment.

[0064] Referring to FIGS. 3A, 3B, 3C, and 3D, a flexible pad (20) of a wireless charging device (10) according to one embodiment may include a first fastening portion (311) (e.g., first fastening portions (211 and / or 221)), a second fastening portion (312) (e.g., second fastening portions (212 and / or 222)), and a base portion (313) (e.g., base portions (213 and / or 223)) between the first fastening portion (311) and the second fastening portion (312).

[0065] In one embodiment, when the wireless charging device (10) is coupled to the electronic device (5), at least a portion of the flexible pad (20) may be brought into contact with the curved surface of the electronic device (5) in a shape corresponding to the curved surface. For example, when the wireless charging device (10) is coupled to the electronic device (5), the base portion (313) of the flexible pad (20) may be brought into contact with the inner surface (5A) of the electronic device (5) in a shape corresponding to the inner surface (5A). The coil (25) may be deformed according to the shape of the base portion (313) of the flexible pad (20).

[0066] In one embodiment, the first fastening portion (311) and the second fastening portion (312) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5). For example, referring to FIG. 3D, the first fastening portion (311) may be coupled to the first portion of the electronic device (5). For example, the first fastening portion (311) may at least partially surround the perimeter of the first portion of the electronic device (5). For example, the first end portion (311a) of the first fastening portion (311) (e.g., the first end portions (211a and / or 221a)) may be overlaid on the first portion of the electronic device (5), and the second end portion (311b) of the first fastening portion (311) (e.g., the second end portions (211b and / or 221b)) may be overlaid on the first end portion (311a). The first magnet (271) of the first end portion (311a) may face the second magnet (272) of the second end portion (311b) so that an attractive force acts thereon. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5). The first fastening portion (311), the first magnet (271), and the second magnet (272) may be included in the first fastening structure (11) of the wireless charging device (10), or may be referred to as the first fastening structure (11).

[0067] For example, the second fastening portion (312) can be coupled to the second portion of the electronic device (5). For example, the second fastening portion (312) can at least partially surround the periphery of the second portion of the electronic device (5). For example, the first end portion (312a) of the second fastening portion (312) (e.g., the first end portions (212a and / or 222a)) can be overlaid on the second portion of the electronic device (5), and the second end portion (312b) of the second fastening portion (312) (e.g., the second end portions (212b and / or 222b)) can be overlaid on the first end portion (312a). The third magnet (273) of the first end portion (312a) of the second fastening portion (312) may face the fourth magnet (274) of the second end portion (312b) so that an attractive force acts thereon. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5). The second fastening portion (312), the third magnet (273), and the fourth magnet (274) may be included in the second fastening structure (12) of the wireless charging device (10), or may be referred to as the second fastening structure (12).

[0068] FIGS. 4A and 4B are drawings illustrating a wireless charging device coupled to an electronic device, according to one embodiment.

[0069] In one embodiment, the first fastening portion (311) and / or the second fastening portion (312) of the wireless charging device (10) may be coupled to the electronic device (5) in a manner different from that illustrated in FIG. 3D. For example, referring to FIGS. 4A and 4B , for example, the central portion (311c) of the first fastening portion (311) (e.g., the central portions (211c and / or 221c)) may at least partially surround the perimeter of the first portion of the electronic device (5). For example, the central portion (311c) may at least partially surround the perimeter of the first portion of the electronic device (5) such that the first side (S1) and the second side (S2) of the central portion (311c) face each other. The first end portion (311a) of the first fastening portion (311) can be bent away from the first side (S1) of the center portion (311c) of the first fastening portion (311) in a direction away from the electronic device (5). The second end portion (311b) of the first fastening portion (311) can be bent away from the second side (S2) of the center portion (311c) of the first fastening portion (311) so as to face the first end portion (311a) of the first fastening portion (311). The first magnet (271) of the first end portion (311a) can face the second magnet (272) of the second end portion (311b) so that an attractive force acts thereon. Accordingly, the wireless charging device (10) can be fixed to the electronic device (5).

[0070] For example, the central portion (312c) of the second fastening portion (312) (e.g., the central portions (212c and / or 222c)) can at least partially surround the perimeter of the second portion of the electronic device (5). For example, the central portion (312c) can at least partially surround the perimeter of the second portion of the electronic device (5) such that the first side (S3) and the second side (S4) of the central portion (312c) face each other. The first end portion (312a) of the second fastening portion (312) can be bent away from the first side (S3) of the central portion (312c) of the second fastening portion (312) in a direction away from the electronic device (5). The second end (312b) of the second fastening portion (312) can be bent from the second side (S4) of the center (312c) of the second fastening portion (312) so as to face the first end (312a) of the second fastening portion (312). The third magnet (273) of the first end (312a) can face the fourth magnet (274) of the second end (312b) so as to exert an attractive force. Accordingly, the wireless charging device (10) can be fixed to the electronic device (5).

[0071] FIGS. 5A, 5B, 5C, and 5D are drawings illustrating a wireless charging device coupled to an electronic device according to one embodiment. In FIG. 5C, a portion of the electronic device (10) is shown cut away for convenience of explanation.

[0072] In one embodiment, the first fastening portion (311) and / or the second fastening portion (312) of the wireless charging device (10) may be coupled to the electronic device (5) in a manner different from that described above.

[0073] For example, referring to FIGS. 5A and 5B , the first fastening portion (311) of the wireless charging device (10) can at least partially surround the periphery of the first portion of the electronic device (5). For example, the first fastening portion (311) can include a first portion (501) (e.g., central portions (211c and / or 221c)) that contacts (or overlaps) an inner surface (5A) of the electronic device (5) and a second portion (502) (e.g., second end portions (212b and / or 222b)) that extends from the first portion (501) and contacts (or overlaps) an outer surface (5B) of the electronic device (5). The first magnet (271) can be disposed within (or on) the first portion (501). In this case, optionally, the first fastening portion (311) may not include the first end portion (311a). The second magnet (272) may be disposed within (or on) the second portion (502). For example, one or more first corresponding magnets of the electronic device (5) may be positioned between the first magnet (271) and the second magnet (272) of the wireless charging device (10). For example, the first magnet (271) of the first fastening portion (311) may face the first corresponding magnet (581) of the electronic device (5) so as to exert an attractive force. For example, the second magnet (272) of the first fastening portion (311) may face the second corresponding magnet (582) of the electronic device (5) so as to exert an attractive force. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5). For example, as shown in FIGS. 5A and 5B, the first magnet (271) of the wireless charging device (10) and the first corresponding magnet (581) of the electronic device (5) may face each other with the inner surface (5A) of the electronic device (5) interposed therebetween, and the second magnet (272) of the wireless charging device (10) and the second corresponding magnet (582) of the electronic device (5) may face each other with the outer surface (5B) of the wireless charging device (10) interposed therebetween.In contrast, as illustrated in FIGS. 5C and 5D , the first magnet (271) of the wireless charging device (10) and the first corresponding magnet (581) of the electronic device (5) may face each other with a first side (5C) extending from a first edge of the inner surface (5A) of the electronic device (5) to a first edge of the outer surface (5B), and the second magnet (272) of the wireless charging device (10) and the second corresponding magnet (582) of the electronic device (5) may face each other with a second side (5D) extending from a second edge of the inner surface (5A) of the wireless charging device (10) to a second edge of the outer surface (5B).

[0074] For example, the second fastening portion (312) of the wireless charging device (10) may at least partially surround the periphery of the second portion of the electronic device (5). For example, the second fastening portion (312) may include a first portion (511) (e.g., central portions (212c and / or 222c)) that contacts (or overlaps) an inner surface (5A) of the electronic device (5) and a second portion (512) (e.g., second end portions (221b and / or 222b)) that extends from the first portion (511) and contacts (or overlaps) an outer surface (5B) of the electronic device (5). The third magnet (273) may be disposed within (or on) the first portion (501). In this case, optionally, the second fastening portion (312) may not include the first end portion (312a). The fourth magnet (274) may be positioned within (or on) the second portion (502). For example, one or more second corresponding magnets of the electronic device (5) may be positioned between the third magnet (273) and the fourth magnet (274) of the wireless charging device (10). For example, the third magnet (273) of the second fastening portion (312) may face the third corresponding magnet (583) of the electronic device (5) so as to exert an attractive force thereon. For example, the fourth magnet (274) of the second fastening portion (312) may face the fourth corresponding magnet (584) of the electronic device (5) so as to exert an attractive force thereon. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5). For example, as shown in FIGS. 5A and 5B, the third magnet (273) of the wireless charging device (10) and the third corresponding magnet (583) of the electronic device (5) may face each other with the inner surface (5A) of the electronic device (5) interposed therebetween, and the fourth magnet (274) of the wireless charging device (10) and the fourth corresponding magnet (584) of the electronic device (5) may face each other with the outer surface (5B) of the wireless charging device (10) interposed therebetween.In contrast, as illustrated in FIGS. 5C and 5D , the third magnet (273) of the wireless charging device (10) and the third corresponding magnet (583) of the electronic device (5) may face each other with the first side (5C) of the electronic device (5) interposed therebetween, and the fourth magnet (274) of the wireless charging device (10) and the fourth corresponding magnet (584) of the electronic device (5) may face each other with the second side (5D) of the wireless charging device (10) interposed therebetween.

[0075] FIG. 6A illustrates a wireless charging device according to one embodiment.

[0076] FIG. 6b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0077] Referring to FIG. 6A, according to one embodiment, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (611) and a second fastening portion (612). For example, the flexible pad (20) of the wireless charging device (10) may include the first fastening portion (611) and the second fastening portion (612) as an alternative to or in addition to the first fastening portion (311) and / or the second fastening portion (312). For example, the flexible pad (20) of the wireless charging device (10) may include the first fastening portion (611) and the second fastening portion (612) as an alternative to or in addition to the first fastening portion (711) and the second fastening portion (712), which will be described later. For example, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (611) and a second fastening portion (612) as an alternative to or in addition to the first fastening portion (811) and the second fastening portion (812), which will be described later. For example, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (611) and a second fastening portion (612), as an alternative to or in addition to the first fastening portion (911) and the second fastening portion (912), which will be described later. For example, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (611) and a second fastening portion (612), as an alternative to or in addition to the first clip (1011) and the second clip (1012), which will be described later.

[0078] In one embodiment, the first fastening portion (611) and the second fastening portion (612) may each extend from the base portion (313). For example, the first fastening portion (611) and the second fastening portion (612) may each extend from opposite edges of the base portion (313). For example, the first fastening portion (611) may extend in the first direction (1) from a third side (e.g., a side in the first direction (1)) of the base portion (313), and the second fastening portion (612) may extend in the second direction (2) opposite to the first direction (1) from a fourth side (e.g., a side in the second direction (2)) of the base portion (313) opposite to the third side. The first fastening portion (611) and the second fastening portion (612) may, for example, extend parallel to each other.

[0079] The first fastening portion (611) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22). The second fastening portion (612) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22).

[0080] According to one embodiment, the wireless charging device (10) may include a first magnet (671) positioned within (or on) the first fastening portion (611) and a second magnet (672) positioned within (or on) the second fastening portion (612).

[0081] In one embodiment, the first fastening portion (611) and the second fastening portion (612) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5). For example, referring to FIG. 6B, the first fastening portion (611) and the second fastening portion (612) may be coupled to a third portion of the electronic device (5). For example, the first fastening portion (611) and the second fastening portion (612) together may at least partially surround the periphery of the third portion of the electronic device (5). For example, the first fastening portion (611) may be overlaid on the third portion (or outer surface (5B)) of the electronic device (5), and the second fastening portion (612) may be overlaid on the first fastening portion (611). The first magnet (671) of the first fastening portion (611) can face the second magnet (672) of the second fastening portion (612) so that an attractive force acts thereon. Accordingly, the wireless charging device (10) can be fixed to the electronic device (5).

[0082] FIG. 7A illustrates a wireless charging device according to one embodiment.

[0083] FIG. 7b illustrates a wireless charging device coupled to an electronic device, according to one embodiment.

[0084] Referring to FIG. 7A, according to one embodiment, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (711) and / or a second fastening portion (712). For example, the flexible pad (20) of the wireless charging device (10) may include, alternatively to the first fastening portion (311) and / or the second fastening portion (312), the first fastening portion (711) and / or the second fastening portion (712).

[0085] For example, the first fastening portion (711) and the second fastening portion (712) may each extend from the base portion (313). For example, the first fastening portion (711) and the second fastening portion (712) may each extend from both edges of the base portion (313). For example, the first fastening portion (711) may extend from the first side (e.g., the side in the third direction (3)) of the base portion (313) in the longitudinal direction (e.g., the third direction (3)) of the base portion (313). For example, the second fastening portion (712) may extend from the second side (e.g., the side in the fourth direction (4)) of the base portion (313) opposite to the first side in the opposite direction (e.g., the fourth direction (4)) of the first fastening portion (711).

[0086] The first fastening portion (711) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22). The second fastening portion (712) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22).

[0087] According to one embodiment, the wireless charging device (10) may include a first magnet (771) positioned within (or on) the first fastening portion (711) and a second magnet (772) positioned within (or on) the second fastening portion (712).

[0088] In one embodiment, the first fastening portion (711) and the second fastening portion (712) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5). For example, referring to FIG. 7B, the first fastening portion (711) and the second fastening portion (712), together with the base portion (313), may have a shape corresponding to a curved surface (e.g., an inner surface (5A)) of the electronic device (5) and may be brought into contact with the curved surface. The first magnet (771) of the first fastening portion (711) may face the first corresponding magnet (781) of the electronic device (5) so as to exert an attractive force thereon. The second magnet (772) of the second fastening portion (712) may face the second corresponding magnet (782) of the electronic device (5) so as to exert an attractive force thereon. Accordingly, the wireless charging device (10) may be secured to the electronic device (5).

[0089] FIGS. 8A and 9A illustrate a wireless charging device according to one embodiment.

[0090] FIGS. 8b and 9b illustrate a wireless charging device coupled to an electronic device, according to one embodiment.

[0091] Referring to FIGS. 8A and 9A, according to one embodiment, the flexible pad (20) of the wireless charging device (10) may include a first fastening portion (811) and / or a second fastening portion (812). For example, the flexible pad (20) of the wireless charging device (10) may include, alternatively to the first fastening portion (311) and / or the second fastening portion (312), the first fastening portion (811) and / or the second fastening portion (812). For example, the flexible pad (20) of the wireless charging device (10) may include, alternatively to the first fastening portion (711) and / or the second fastening portion (712), the first fastening portion (811) and / or the second fastening portion (812).

[0092] For example, the first fastening portion (811) and the second fastening portion (812) may each extend from the base portion (313). For example, the first fastening portion (811) and the second fastening portion (812) may each extend from both edges of the base portion (313). For example, the first fastening portion (811) may extend from the first side (e.g., the side in the third direction (3)) of the base portion (313) in the longitudinal direction (e.g., the third direction (3)) of the base portion (313). For example, the second fastening portion (812) may extend from the second side (e.g., the side in the fourth direction (4)) of the base portion (313) opposite to the first side in the opposite direction (e.g., the fourth direction (4)) of the first fastening portion (811). The first fastening portion (811) may include, for non-limiting examples, one or more sections having a smaller width (e.g., a length along the first direction (1)) than the base portion (313). The second fastening portion (812) may include, for non-limiting examples, one or more sections having a smaller width (e.g., a length along the first direction (1)) than the base portion (313).

[0093] In one embodiment, the first fastening portion (811) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22). The second fastening portion (812) may be formed, for example, only by the first layer (21) or by the first layer (21) and the second layer (22).

[0094] According to one embodiment, the wireless charging device (10) may include one or more first magnets positioned within (or on) the first fastening portion (811). For example, as shown in FIG. 8A, the wireless charging device (10) may include a first magnet (871) positioned within (or on) the first fastening portion (811). For example, as shown in FIG. 9A, the wireless charging device (10) may include first magnets (971a and 971b) positioned within (or on) the first fastening portion (811).

[0095] According to one embodiment, the wireless charging device (10) may include one or more second magnets positioned within (or on) the second fastening portion (812). For example, as shown in FIG. 8A, the wireless charging device (10) may include a second magnet (872) positioned within (or on) the second fastening portion (812). For example, as shown in FIG. 9A, the wireless charging device (10) may include second magnets (972a and 972b) positioned within (or on) the second fastening portion (812).

[0096] In one embodiment, the first fastening portion (811) and the second fastening portion (812) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5). For example, referring to FIGS. 8B and 9B , the first fastening portion (811) and the second fastening portion (812) may, together with the base portion (313), have a shape corresponding to the curved surface (e.g., the inner surface (5A)) of the electronic device (5) and may come into contact with the curved surface. For example, as shown in FIG. 8B , the first magnet (871) of the first fastening portion (811) may face the first corresponding magnet (881) of the electronic device (5) so that an attractive force acts thereon. The second magnet (872) of the second fastening portion (812) may face the second corresponding magnet (882) of the electronic device (5) so that an attractive force acts thereon. For example, as shown in FIG. 9B, each of the first magnets (971a and 971b) of the first fastening portion (811) may face each of the first corresponding magnets (981a and 981b) of the electronic device (5) so as to exert attractive force. For example, each of the second magnets (972a and 972b) of the second fastening portion (812) may face each of the second corresponding magnets (982a and 982b) of the electronic device (5) so as to exert attractive force. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5).

[0097] FIGS. 10A and 10B illustrate a wireless charging device coupled to an electronic device, according to one embodiment.

[0098] Referring to FIG. 10A, the wireless charging device (10) may include a first clip (1011) and / or a second clip (1012). For example, the wireless charging device (10) may alternatively include the first clip (1011) in the first fastening portions (311, 711, 811, or 911), and / or alternatively include the second clip (1012) in the second fastening portions (312, 712, 812, or 912).

[0099] For example, the first clip (1011) and the second clip (1012) can be configured to be fitted to the electronic device (5). By the elastic force of the first clip (1011) and the second clip (1012), the first clip (1011) and the second clip (1012) can be maintained in a state of being coupled to the electronic device (5).

[0100] Referring to FIG. 10B, in one embodiment, the first clip (1011) may include one or more protrusions (1021) formed on a surface (1011A) that contacts the electronic device (5) to increase friction with the electronic device (5). In one embodiment, the second clip (1012) may include one or more protrusions (1022) formed on a surface (1012A) that contacts the electronic device (5) to increase friction with the electronic device (5).

[0101] Although not shown, alternatively to the first clip (1011) and / or the second clip (1012), a method using a hook-and-loop fastener or a suction pad may be applied to secure the wireless charging device (10) to the electronic device (5).

[0102] FIG. 11 is a drawing showing a wireless charging device according to one embodiment.

[0103] Referring to FIG. 11, a wireless charging device (110) according to one embodiment may include a first part (111) and a second part (112) electrically and physically connected to the first part (111). The second part (112) may be, for example, removably connected to the first part (111).

[0104] For example, the first part (111) may include the wireless charging device (10) of FIG. 3a, FIG. 4a, FIG. 5a, FIG. 6a, FIG. 7a, FIG. 8a, FIG. 9a, FIG. 10a, or FIG. 12a. For example, the second part (112) may include the wireless charging device (10) of FIG. 3a, FIG. 4a, FIG. 5a, FIG. 6a, FIG. 7a, FIG. 8a, FIG. 9a, FIG. 10a, or FIG. 12a.

[0105] For example, the first part (111) can support wireless charging of an electronic device (5), and the second part (112) can support wireless charging of an electronic device that is different from the electronic device (5), for example, has a different size (or curvature) than the electronic device (5).

[0106] FIGS. 12A and 12B illustrate a wireless charging device according to one embodiment.

[0107] FIGS. 12c and 12d illustrate a wireless charging device coupled to an electronic device, according to one embodiment.

[0108] Referring to FIGS. 12A and 12B , according to an embodiment, the flexible pad (20) of the wireless charging device (10) may include a fastening portion (1210). For example, the flexible pad (20) of the wireless charging device (10) may include the fastening portion (1210) alternatively or additionally to the first fastening portion (311) and / or the second fastening portion (312). For example, the flexible pad (20) of the wireless charging device (10) may include the fastening portion (1210) alternatively or additionally to the first fastening portion (711) and / or the second fastening portion (712). For example, the flexible pad (20) of the wireless charging device (10) may include the fastening portion (1210) alternatively or additionally to the first fastening portion (811) and / or the second fastening portion (812). For example, the flexible pad (20) of the wireless charging device (10) may include a fastening portion (1210) as an alternative to or in addition to the first fastening portion (911) and / or the second fastening portion (912). For example, the flexible pad (20) of the wireless charging device (10) may include a fastening portion (1210) as an alternative to or in addition to the first clip (1011) and / or the second clip (1012).

[0109] In one embodiment, the fastening portion (1210) may extend from the base portion (313). For example, the fastening portion (1210) may extend from one side (e.g., the side in the second direction (2)) of the base portion (313). For example, the fastening portion (1210) may extend from the base portion (313) in one direction (e.g., the second direction (2)). In one embodiment, the fastening portion (1210) may be formed only by the first layer (21) or may be formed by the first layer (21) and the second layer (22).

[0110] According to one embodiment, a wireless charging device (10) may include a first magnet (1271) and a second magnet (1272) positioned within (or on) a fastening portion (1210). The first magnet (1271) may be positioned between the base portion (313) and the second magnet (1272).

[0111] In one embodiment, the fastening portion (1210) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5). For example, referring to FIGS. 12C and 12D , the fastening portion (1210) may be coupled to a third portion of the electronic device (5). For example, the fastening portion (1210) may at least partially surround the perimeter of the third portion of the electronic device (5). For example, the fastening portion (1210) may wrap around the perimeter of the third portion of the electronic device (5) such that the first magnet (1271) and the second magnet (1272) face each other. For example, the fastening portion (1210), when coupled to the electronic device (5), may include a first portion that surrounds the third portion of the electronic device (5); The wireless charging device (1270) may include a second portion that extends from the first portion and surrounds the base portion (313) that is in contact with the third portion of the electronic device (5); and a third portion that extends from the second portion and overlaps the first portion. The first magnet (1271) may be disposed within (or on) the first portion of the fastening portion (1210), and the second magnet (1272) may be disposed within (or on) the third portion of the fastening portion (1210). Accordingly, when the fastening portion (1210) is coupled to the electronic device (5), the first magnet (1271) and the second magnet (1272) may face each other. An attractive force may act between the first magnet (1271) and the second magnet (1272) that face each other. Accordingly, the wireless charging device (10) may be fixed to the electronic device (5).

[0112] According to one embodiment, a wireless charging device (10) for an electronic device (5) having an exterior including a curved surface (e.g., an inner surface (5A) or an outer surface (5B)) may include a flexible pad (20) including a base portion (313) and a fastening portion (311) extending from the base portion (313); and a transmitting coil (25) disposed on the base portion (313) of the flexible pad (20) and configured to be deformed according to the shape of the base portion (313) of the flexible pad (20). In a state where the wireless charging device (10) is coupled to the electronic device (5), the base portion (313) of the flexible pad (20) may come into contact with the curved surface (5A; 5B) of the electronic device (5) in a shape corresponding to the curved surface (5A; 5B). The fastening portion (311) of the flexible pad (20) may be configured to secure the wireless charging device (10) to the electronic device (5).

[0113] In one embodiment, the fastening portion (311) may at least partially wrap around the circumference of the electronic device (5) when the wireless charging device (10) is coupled to the electronic device (5). The wireless charging device (10) may include a first magnet (271) and a second magnet (272) disposed on the fastening portion (311) of the flexible pad (20) so that an attractive force acts on each other when the wireless charging device (10) is coupled to the electronic device (5).

[0114] In one embodiment, the fastening portion (311) of the flexible pad (20) may include a central portion (311c) connected to the base portion (313); a first end portion (311a) extending from a first side (S1) of the central portion (311c) in a first direction (1) substantially perpendicular to the base portion (313), and on which the first magnet (271) is disposed; and a second end portion (311b) extending from a second side (S2) of the central portion (311c) in a second direction (2) opposite to the first direction (1), and on which the second magnet (272) is disposed. In a state where the wireless charging device (10) is coupled to the electronic device (5), the fastening portion (311) can at least partially wrap around the circumference of the electronic device (5) so that the first end (311a) where the first magnet (271) is arranged and the second end (311b) where the second magnet (272) is arranged face each other.

[0115] In one embodiment, when the wireless charging device (10) is coupled to the electronic device (5), the first end (311a) of the fastening portion (311) on which the first magnet (271) is disposed may be overlaid on the electronic device (5). When the wireless charging device (10) is coupled to the electronic device (5), the second end (311b) of the fastening portion (311) on which the second magnet (272) is disposed may be overlaid on the first end (311a).

[0116] In one embodiment, when the wireless charging device (10) is coupled to the electronic device (5), the center portion (311c) of the fastening portion (311) can at least partially wrap around the perimeter of the electronic device (5) so that the first side (S1) and the second side (S2) face each other. When the wireless charging device (10) is coupled to the electronic device (5), the first end portion (311a) of the fastening portion (311) can be bent in a direction away from the electronic device (5) from the first side (S1) of the center portion (311c) of the fastening portion (311). In a state where the wireless charging device (10) is coupled to the electronic device (5), the second end (311b) of the fastening portion (311) can be bent from the second side (S2) of the central portion (311c) of the fastening portion (311) so as to face the first end (311a) of the fastening portion (311).

[0117] In one embodiment, the wireless charging device (10), the flexible pad (20), may include another fastening portion (312). The base portion (313) of the flexible pad (20) may be positioned between the fastening portion (311) and the other fastening portion (312). The other fastening portion (312) may at least partially surround another circumference of the electronic device (5) when the wireless charging device (10) is coupled to the electronic device (5). The wireless charging device (10) may include a third magnet (273) and a fourth magnet (274) disposed on the other fastening portion (312) of the flexible pad (20) so that an attractive force acts on each other when the wireless charging device (10) is coupled to the electronic device (5).

[0118] In one embodiment, the wireless charging device (10) may include one or more magnets arranged on the fastening portion (311) such that the wireless charging device (10) exerts an attractive force on one or more corresponding magnets (581; 582) within the electronic device (5) when the wireless charging device (10) is coupled to the electronic device (5).

[0119] In one embodiment, the one or more magnets may include a first magnet (271) and a second magnet (272). When the wireless charging device (10) is coupled to the electronic device (5), the one or more corresponding magnets (581; 582) of the electronic device (5) may be positioned between the first magnet (271) and the second magnet (272).

[0120] In one embodiment, the wireless charging device (10), the flexible pad (20), may include another fastening portion (312). The base portion (313) of the flexible pad (20) may be positioned between the fastening portion (311) and the other fastening portion (312). When the wireless charging device (10) is coupled to the electronic device (5), the fastening portion (311), the base portion (313), and the other fastening portion (312) of the flexible pad (20) may come into contact with the curved surface (5A; 5B) of the electronic device (5) in a shape corresponding to the curved surface (5A; 5B). The wireless charging device (10) may include one or more other magnets (872) arranged on the other fastening portion (312) so that the wireless charging device (10) exerts an attractive force on one or more other corresponding magnets (882) within the electronic device (5) when the wireless charging device (10) is coupled to the electronic device (5).

[0121] In one embodiment, the flexible pad (20) may include another fastening portion (312) configured to at least partially surround the periphery of the electronic device (5) together with the fastening portion (311) when the wireless charging device (10) is coupled to the electronic device (5). The wireless charging device (10) may include a first magnet (671) disposed on the fastening portion (311); and a second magnet (672) disposed on the other fastening portion (312) so as to exert an attractive force on the first magnet (671) when the wireless charging device (10) is coupled to the electronic device (5).

[0122] In one embodiment, the fastening portion (311) may extend in a first direction (1) from a first side of the base portion (313). The other fastening portion (312) may extend in a second direction (2) opposite to the first direction (1) from a second side of the base portion (313) opposite to the first side.

[0123] In one embodiment, the wireless charging device (10) may include a clip (1011; 1012) arranged on the fastening portion (311) of the flexible pad (20) and configured to be fitted to the electronic device (5).

[0124] In one embodiment, the clip (1011; 1012) may include a contact surface (1011A; 1012A) that contacts the exterior of the electronic device (5); and one or more protrusions (1021; 1022) formed on the contact surface (1011A; 1012A).

[0125] In one embodiment, the flexible pad (20) may have elasticity so that the shape of the base portion (313) in contact with the curved surface (5A; 5B) of the electronic device (5) is maintained.

[0126] In one embodiment, the wireless charging device (10) may include another flexible pad (22) attached to the flexible pad (20). The transmitting coil (25) may be placed between the flexible pad (20) and the other flexible pad (22).

[0127] In one embodiment, the wireless charging device (10) may include a first outer surface formed by the flexible pad (20); and a second outer surface formed by the other flexible pad (22). A first vertical distance from the first outer surface to the transmitting coil (25) may be substantially equal to a second vertical distance from the second outer surface to the transmitting coil (25).

[0128] In one embodiment, the wireless charging device (10) may include an elastic plate (29) disposed between the base portion (313) of the flexible pad (20) and the transmitting coil (25).

[0129] In one embodiment, the base portion (313) and the fastening portion (311) of the flexible pad (20) may be formed integrally.

[0130] In one embodiment, the wireless charging device (10) may include a first part (111) including the flexible pad (20) and the transmitting coil (25); and a second part (112) including another transmitting coil for wireless charging of another electronic device (5). The second part (112) may be configured to be detachably attached to the first part (111).

[0131] According to one embodiment, a wireless charging device (10) of a ring device (5) may include a flexible pad (20) including a base portion (313) and a fastening portion (311) extending from the base portion (313); and a wireless charging coil (25) disposed within the base portion (313) of the flexible pad (20) and configured to be deformed according to the shape of the base portion (313). When charging the ring device (5), the base portion (313) of the flexible pad (20) may come into contact with the inner curved surface (5A) of the ring device (5) that comes into contact with a user's finger or the outer curved surface (5B) opposite to the inner curved surface (5A) in a shape corresponding to the inner curved surface (5A) or the outer curved surface (5B). When charging the ring device (5), the fastening portion (311) of the flexible pad (20) can be coupled to the ring device (5) so that the wireless charging device (10) is fixed to the ring device (5).

[0132] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0133] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0134] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In a wireless charging device for an electronic device having an exterior including a curved surface, A flexible pad comprising a base portion and a fastening portion extending from the base portion; and A transmitting coil is disposed on the base portion of the flexible pad and configured to be deformed according to the shape of the base portion of the flexible pad, In a state where the wireless charging device is coupled to the electronic device, the base portion of the flexible pad is brought into contact with the curved surface of the electronic device in a shape corresponding to the curved surface, The fastening portion of the flexible pad is configured to fasten the wireless charging device to the electronic device. Wireless charging device.

2. In claim 1, The above-mentioned fastening portion at least partially surrounds the periphery of the electronic device when the wireless charging device is coupled to the electronic device, The wireless charging device includes a first magnet and a second magnet, which are arranged on the fastening portion of the flexible pad so that an attractive force acts on each other when the wireless charging device is coupled to the electronic device. Wireless charging device.

3. In claim 2, The above fastening portion of the above flexible pad: A central part connected to the above base part; A first end extending in a first direction substantially perpendicular to the base portion from the first side of the central portion, and on which the first magnet is arranged; and a second end extending in a second direction opposite to the first direction from the second side of the central portion, and in which the second magnet is disposed; In a state where the wireless charging device is coupled to the electronic device, the fastening portion at least partially wraps around the perimeter of the electronic device so that the first end where the first magnet is arranged and the second end where the second magnet is arranged face each other. Wireless charging device.

4. In claim 3, With the wireless charging device coupled to the electronic device: The first end of the fastening portion, on which the first magnet is arranged, is covered on the electronic device; and The second end of the fastening portion, on which the second magnet is arranged, is covered over the first end. Wireless charging device.

5. In claim 3, With the wireless charging device coupled to the electronic device: The central portion of the above-mentioned fastening portion at least partially surrounds the perimeter of the electronic device so that the first side and the second side face each other, The first end of the above-mentioned fastening portion is bent in a direction away from the electronic device from the first side of the center of the above-mentioned fastening portion, The second end of the above-mentioned fastening portion is bent from the second side of the central portion of the above-mentioned fastening portion so as to face the first end of the above-mentioned fastening portion. Wireless charging device.

6. In any one of claims 2 to 5, The above flexible pad includes another fastening portion, The base portion of the flexible pad is located between the fastening portion and the other fastening portion, The other fastening portion at least partially surrounds another circumference of the electronic device when the wireless charging device is coupled to the electronic device, The wireless charging device includes a third magnet and a fourth magnet, which are arranged on the other fastening portion of the flexible pad so that an attractive force acts on each other when the wireless charging device is coupled to the electronic device. Wireless charging device.

7. In claim 1, In a state where the wireless charging device is coupled to the electronic device, the wireless charging device includes one or more magnets arranged on the fastening portion so that an attractive force acts on one or more corresponding magnets within the electronic device. Wireless charging device.

8. In claim 7, The one or more magnets include a first magnet and a second magnet, In a state where the wireless charging device is coupled to the electronic device, one or more corresponding magnets of the electronic device are positioned between the first magnet and the second magnet. Wireless charging device.

9. In claim 7, The above flexible pad includes another fastening portion, The base portion of the flexible pad is located between the fastening portion and the other fastening portion, In a state where the wireless charging device is coupled to the electronic device, the fastening portion, the base portion, and the other fastening portion of the flexible pad are in contact with the curved surface of the electronic device in a shape corresponding to the curved surface, The wireless charging device includes one or more other magnets arranged on the other fastening portion so that the wireless charging device interacts with one or more other corresponding magnets within the electronic device while the wireless charging device is coupled to the electronic device. Wireless charging device.

10. In claim 1, The flexible pad includes another fastening portion configured to at least partially surround the perimeter of the electronic device together with the fastening portion while the wireless charging device is coupled to the electronic device, The above wireless charging device: A first magnet disposed on the above-mentioned fastening portion; and A second magnet disposed on the other fastening portion so that the first magnet and the second magnet act with each other while the wireless charging device is coupled to the electronic device; Wireless charging device.

11. In claim 10, The above-mentioned fastening portion extends in a first direction from the first side of the base portion, The other fastening portion extends in a second direction opposite to the first direction from a second side opposite to the first side of the base portion. Wireless charging device.

12. In claim 1, A clip disposed on the fastening portion of the flexible pad and configured to be fitted into the electronic device, Wireless charging device.

13. In claim 12, The above clip: a contact surface that comes into contact with the exterior of the electronic device; and comprising one or more protrusions formed on the contact surface; Wireless charging device.

14. In any one of claims 1 to 13, The flexible pad has elasticity so that the shape of the base portion in contact with the curved surface of the electronic device is maintained. Wireless charging device.

15. In any one of claims 1 to 14, Including another flexible pad attached to the above flexible pad, The above transmitting coil is disposed between the flexible pad and the other flexible pad. Wireless charging device.

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