Wireless charging device and wireless charging module

Abstract

The invention discloses a wireless charging device and a wireless charging module. The wireless charging device comprises a carrier plate and a wireless charging module arranged on the carrier plate. The carrier plate is provided with a setting surface. The carrier plate has a starting point on the setting surface. The wireless charging module comprises a conductive wire and an insulating material. The conductive wire is spirally surrounded with the starting point as the center, so that the conductive wire generates a plurality of arc-shaped contours, and a preset gap is formed between every two adjacent arc-shaped contours. And the insulating material is arranged in the preset gap, so that the two adjacent arc-shaped outlines are separated.

Description

Technical Field

[0001] The present invention relates to a charging device, and in particular to a wireless charging device and a wireless charging module. Background Art

[0002] Existing wireless charging devices can achieve wireless charging via a wireless charging pad on another electronic device. However, while these devices and the wireless charging pad can achieve wireless charging, the coil area of ​​these devices is small, and the wireless charging pad must be in near contact with the device to achieve charging. This means that if there is a significant gap between the device and the pad, or if there is a slight misalignment, the device and the pad may not be able to charge, or may experience poor charging efficiency.

[0003] Therefore, the inventors believe that the above defects can be improved, so they have devoted themselves to research and combined with the application of scientific principles, and finally proposed a reasonable design of the present invention that effectively improves the above defects. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wireless charging device and a wireless charging module to address the deficiencies of the prior art.

[0005] An embodiment of the present invention discloses a wireless charging device, comprising: a carrier plate including a mounting surface, the carrier plate having a starting point on the mounting surface; and a wireless charging module disposed on the mounting surface, the wireless charging module comprising: a conductive wire spirally wound around the starting point, such that the conductive wire forms a plurality of arc-shaped profiles, with a predetermined gap between two adjacent arc-shaped profiles; and an insulating material disposed within the predetermined gap to block the two adjacent arc-shaped profiles.

[0006] Preferably, the predetermined gap exceeds 0.2 mm.

[0007] Preferably, the insulating material is an insulating wire.

[0008] Preferably, the cross-section of the insulating wire is rectangular and has two long sides and two short sides connecting the two long sides, and each of the long sides faces toward the installation surface or away from the installation surface.

[0009] Preferably, the insulating wire comprises a tube and a heat dissipation material disposed in the tube, the outer edge of the tube contacts the conductive wire, the inner edge of the tube contacts the heat dissipation material, and the heat dissipation material can flow in the tube.

[0010] An embodiment of the present invention also discloses a wireless charging module for installation on a carrier of a wireless charging device. The wireless charging module includes: a conductive wire spirally wound around a starting point on the carrier, forming a plurality of arc-shaped profiles, with a predetermined gap between two adjacent arc-shaped profiles; and an insulating material disposed within the predetermined gap to isolate the two adjacent arc-shaped profiles.

[0011] Preferably, the predetermined gap exceeds 0.2 mm.

[0012] Preferably, the insulating material is an insulating wire.

[0013] Preferably, the cross-section of the insulating wire is rectangular and has two long sides and two short sides connecting the two long sides.

[0014] Preferably, the insulating wire comprises a tube and a heat dissipation material disposed in the tube, the outer edge of the tube contacts the conductive wire, the inner edge of the tube contacts the heat dissipation material, and the heat dissipation material can flow in the tube.

[0015] In summary, the wireless charging device and wireless charging module disclosed in the embodiments of the present invention can provide a longer charging distance (for example, the vertical or horizontal distance between the two coils) while maintaining comparable charging efficiency through the designs of "the conductive wire spirally wound around the starting point to form multiple arc-shaped profiles, with a predetermined gap between two adjacent arc-shaped profiles" and "the insulating material is disposed within the predetermined gap to block the two adjacent arc-shaped profiles."

[0016] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 4 is a perspective schematic diagram of the wireless charging device of the present invention.

[0018] Figure 2 FIG. 4 is a schematic top view of the wireless charging device of the present invention.

[0019] Figure 3 For the Figure 2 Schematic diagram of the III-III section line.

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged IV region.

[0021] Figure 5 FIG. 4 is a schematic diagram of an insulated wire according to another embodiment of the present invention.

[0022] Figure 6 FIG. 4 is a schematic diagram of an insulated wire according to another embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following is an explanation of the disclosed embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted in actual size. It is stated in advance. The following embodiments will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0024] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" used herein may include any one or more combinations of the associated listed items, depending on the actual situation. Furthermore, the term "electrically coupled" used herein refers to either "indirect electrical connection" or "direct electrical connection."

[0025] See Figures 1 to 6 As shown, this embodiment provides a wireless charging device 100. Figure 1 and Figure 2 As shown, the wireless charging device 100 includes a carrier 1 and a wireless charging module 2 disposed on the carrier 1. Accordingly, the wireless charging device 100 can perform magnetic-to-electricity generation on a coil of an electronic device through the wireless charging module 2, thereby achieving wireless charging.

[0026] It should be noted that while the carrier board 1 and wireless charging module 2 are collectively defined as the wireless charging device 100 in this embodiment, the present invention is not limited thereto. For example, the wireless charging module 2 can also be used independently (e.g., implemented, manufactured, sold, etc.) or in conjunction with other components. The following describes the structure of each component of the wireless charging device 100 and, where appropriate, explains the interconnections between the components of the wireless charging device 100.

[0027] Refer again Figures 1 to 3As shown, the carrier 1 in this embodiment has a disc structure and has a mounting surface DS. In practice, the carrier 1 can be an insulating plate or a circuit substrate, but the present invention is not limited thereto. Furthermore, to facilitate the subsequent description of the structure of the wireless charging module 2, a starting point C is defined on the mounting surface DS of the carrier 1.

[0028] like Figures 2 to 4 As shown, the wireless charging module 2 is disposed on the installation surface DS, and the wireless charging module 2 includes a conductive wire 21 and an insulating material (for example: Figures 4 to 6 22, 22A, and 22B in FIG. Specifically, the conductive wire 21 can be a metal wire (e.g., silk-wrapped wire or Litz wire). The conductive wire 21 can be spirally wound around the starting point C (e.g., wound from the inside out or from the outside in), forming a plurality of arc-shaped profiles CP centered at the starting point C, with a predetermined gap G between adjacent arc-shaped profiles CP. This means that the conductive wire 21 forms a plurality of circular shapes, with adjacent circles not touching each other but having the predetermined gap G.

[0029] Furthermore, the insulating material is disposed within the predetermined gap G, thereby blocking two adjacent arc-shaped profiles CP. Thus, the insulating material can block adjacent portions of the conductive wires 21 to reduce parasitic capacitance, allowing the overall diameter of the wireless charging module 2 (i.e., the diameter of the disc-shaped structure formed by the conductive wires 21 and the insulating material) to increase while maintaining charging efficiency. In this embodiment, the insulating material can be a circular insulating wire 22, but the present invention is not limited thereto.

[0030] For example, if Figure 5 As shown, in order to increase the overall diameter of the wireless charging module 2, the insulating material can be an insulating wire 22A, and the cross-section of the insulating wire 22A is rectangular and has two long sides 221 and two short sides 222 connecting the two long sides 221 (for example, a rectangle with an aspect ratio of 8 to 2), and each long side 221 faces the setting surface DS or faces away from the setting surface DS, but the present invention is not limited to this.

[0031] Furthermore, to prevent the wireless charging module 2 from generating excessive heat during charging, the predetermined gap G is preferably designed to be greater than 0.2 mm so that the proximity effect generated by the conductive wire 21 can be suppressed, thereby avoiding additional heat energy caused by increased impedance.

[0032] Furthermore, if Figure 6As shown, the wireless charging module 2 inevitably generates heat when charging the electronic device. Therefore, the insulating material can be an insulating wire 22B, which includes a tube 223 and a heat dissipation material 224 disposed within the tube 223. The tube 223 can have excellent thermal conductivity, and the outer edge of the tube 223 contacts the conductive wire 21 to absorb heat. The inner edge of the tube 223 contains the heat dissipation material 224 (e.g., thermal fluid) that can flow. The inner edge of the tube 223 can contact the heat dissipation material 224, allowing the heat dissipation material 224 to absorb the heat from the tube 223. In practice, the tube 223 can be connected to a pump (not shown) and a heat dissipation fin (not shown). The pump can guide the heat dissipation material 224 to flow to the heat dissipation fin for heat dissipation, but the present invention is not limited to this.

[0033] For example, in other embodiments of the present invention not shown, the insulating material may also be a solidifiable insulating colloid, and the insulating colloid fills the predetermined gap G so that two adjacent arc-shaped profiles CP are blocked.

[0034] It is noteworthy that the wireless charging device 100 of the present invention, through the aforementioned design, can achieve a longer operating distance compared to existing wireless charging devices while maintaining a charging efficiency above 80%. Specific experimental data is shown in the table below. Separation distance is the distance (in millimeters) between the coil of the wireless charging device and the coil of the electronic device; coil voltage is the voltage value (in volts) measured during the magnetoelectric process; and charging efficiency is the ratio of received power (RX) to transmitted power (TX).

[0035]

[0036] From the above experimental data, it can be seen that the maximum distance at which the conventional wireless charging device 100 can operate is only 10 mm. When the distance exceeds 10 mm, the conventional wireless charging device and the electronic device cannot be charged.

[0037] In contrast, the wireless charging device 100 of the present invention can still charge the electronic device at a distance of 25 mm. In addition, the charging efficiency is almost 80% when the distance is between 5 mm and 25 mm (charging efficiency is inversely proportional to the distance).

[0038] [Technical Effects of the Embodiments of the Invention]

[0039] In summary, the wireless charging device and wireless charging module disclosed in the embodiments of the present invention can provide a longer charging distance (for example, the vertical or horizontal distance between the two coils) while maintaining comparable charging efficiency through the designs of "the conductive wire spirally wound around the starting point to form multiple arc-shaped profiles, with a predetermined gap between two adjacent arc-shaped profiles" and "the insulating material is disposed within the predetermined gap to block the two adjacent arc-shaped profiles."

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. All equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of protection of the claims of the present invention.

Claims

1. A wireless charging device, characterized in that: The wireless charging device comprises: A carrier plate comprising a setting surface, wherein the carrier plate has a starting point on the setting surface; and A wireless charging module is disposed on the mounting surface, and the wireless charging module includes: a conductive line spirally wound around the starting point so as to form a plurality of arc-shaped contours, with a predetermined gap between two adjacent arc-shaped contours; and An insulating material is disposed in the predetermined gap to block two adjacent arc-shaped contours.

2. The wireless charging device according to claim 1, wherein: The predetermined gap exceeds 0.2 mm.

3. The wireless charging device according to claim 1, wherein: The insulating material is an insulating wire.

4. The wireless charging device according to claim 3, wherein: The cross section of the insulating wire is rectangular and has two long sides and two short sides connecting the two long sides, and each of the long sides faces toward the installation surface or away from the installation surface.

5. The wireless charging device according to claim 3, wherein: The insulating wire includes a tube and a heat dissipation material disposed in the tube. The outer edge of the tube contacts the conductive wire, and the inner edge of the tube contacts the heat dissipation material. The heat dissipation material can flow in the tube.

6. A wireless charging module, for being mounted on a carrier board of a wireless charging device, characterized in that: The wireless charging module includes: a conductive wire spirally wound around a starting point on the carrier, so that the conductive wire forms a plurality of arc-shaped profiles, and a predetermined gap exists between two adjacent arc-shaped profiles; and An insulating material is disposed in the predetermined gap to block two adjacent arc-shaped contours.

7. The wireless charging module according to claim 6, characterized in that: The predetermined gap exceeds 0.2 mm.

8. The wireless charging module according to claim 6, wherein: The insulating material is an insulating wire.

9. The wireless charging module according to claim 8, characterized in that: The cross section of the insulating wire is rectangular and has two long sides and two short sides connecting the two long sides.

10. The wireless charging module according to claim 8, characterized in that: The insulating wire includes a tube and a heat dissipation material disposed in the tube. The outer edge of the tube contacts the conductive wire, and the inner edge of the tube contacts the heat dissipation material. The heat dissipation material can flow in the tube.

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