TWI622245B - Wireless charging device with magnetic attached function - Google Patents

Abstract

A magnetic-suction wireless charging device includes a carrier combined with an induction coil and a plurality of magnetic elements. Each of the magnetic elements is located at the periphery of the induction coil and is arranged on the same circumference to form a co-circular form. A wireless charging base has a transmitting coil and a plurality of magnetic positioning elements. The combination of the carrier and a mobile device is placed on the wireless charging base, the magnetic element attracts the magnetic positioning element, and the induction coil is aligned with the transmitting coil. This can facilitate the user to place the mobile device and improve the charging efficiency.

Description

Magnetic suction wireless charging device

The present invention relates to a wireless charging device, and more particularly to a magnetic suction type wireless charging device applied to a mobile device.

The mobile device needs to be powered by a battery, so after the battery power is consumed, the user needs to charge the battery inside the mobile device so that the mobile device can run smoothly and continuously.

General charging methods include wired charging and wireless charging. In the design method of wireless charging, an induction coil is mostly installed inside the mobile device and is electrically connected to the battery. When in use, the mobile device is placed on a wireless charging base, and the current change (magnetic field change) of a transmitting coil in the wireless charging base is used to change the magnetic flux passing through the induction coil to generate a current.

There is no known design of a positioning mechanism between the mobile device and the wireless charging base, so the mobile device is susceptible to external forces and falls from the wireless charging base. In addition, no positioning is formed between the mobile device and the wireless charging base, which indicates that the inductive coil in the mobile device cannot accurately align with the transmitting coil every time, resulting in the mobile device not being able to obtain good charging efficiency.

Furthermore, if the mobile device does not have the induction coil, the mobile device cannot perform wireless charging.

Taiwan Patent No. I527334 discloses a wireless charging device for a vehicle (WIRELESS CHARGING DEVICE FOR CAR). Its technical features include: a charging board is arranged in the car, the charging board has a transmitting element and a plurality of first magnetic bodies. A mobile device has a receiving element and a plurality of second magnetic bodies are disposed on an outer surface of the mobile device. By combining the first magnetic body with the second magnetic body, the mobile device can be positioned on the charging board for charging. However, the position of the receiving element cannot be accurately known from the outer surface of the mobile device, so the installation position of the second magnetic element cannot be accurately located at an equal distance from the periphery of the receiving element. In this way, the mobile device is placed on the charging board, and the transmitting element cannot be aligned with the receiving element.

The object of the present invention is to provide a magnetic-suction-type wire charging device, which has the effects of facilitating the user to place a mobile device and improving the charging efficiency.

The charging device disclosed by the invention comprises a carrier combined with an induction coil and a plurality of magnetic elements. Each of the magnetic elements is located at the periphery of the induction coil and is arranged on the same circumference to form a co-circular form. A wireless charging base has a transmitting coil and a plurality of magnetic positioning elements. Each of the magnetic positioning elements is mounted on the periphery of the transmitting coil and forms a circle. The combination of the carrier and a mobile device is placed on the wireless charging base, the magnetic element attracts the magnetic positioning element, and the induction coil is aligned with the transmitting coil. In addition, a transmission line is electrically connected to the induction coil and the mobile device.

Because the magnetic element and the magnetic positioning element just form a one-to-one magnetic attraction state, and the induction coil is aligned with the transmitting coil, the present invention can achieve the expected effects of facilitating the user to place the mobile device and improving the charging efficiency.

10‧‧‧ carrier

12‧‧‧ Coil receiving section

14‧‧‧Magnetic component housing section

16‧‧‧Back panel

18‧‧‧ circuit board contains recess

20‧‧‧ Induction coil

22‧‧‧Control circuit board

24‧‧‧ adapter

30‧‧‧Magnetic element

50‧‧‧ Attachment

60‧‧‧ mobile device

62‧‧‧Wireless Charging Dock

64‧‧‧Transmitting coil

66‧‧‧Magnetic positioning element

68‧‧‧ back plate

Fig. 1 is an exploded view of the first embodiment of the present invention.

Fig. 2 is a schematic diagram of the combined structure of the first embodiment of the present invention.

FIG. 3 is an external view of a use state of the first embodiment of the present invention.

Fig. 4 is a first schematic view of the use state of the first example of the present invention.

FIG. 5 is a second schematic view of the use state of the first embodiment of the present invention.

Fig. 6 is an external view of a second example of the present invention.

Fig. 7 is an external view of a third embodiment of the present invention.

Please refer to FIG. 1, which shows a magnetic-suction wireless charging device including a carrier 10, an induction coil 20 and a plurality of magnetic elements 30. The above-mentioned plural magnetic elements 30 are particularly four magnetic elements 30.

The carrier 10 includes a coil accommodating portion 12 and four magnetic element accommodating portions 14. The coil receiving portion 12 is a groove. Each of the magnetic component accommodating portions 14 is an accommodating groove. Four of the magnetic element accommodating portions 14 are arranged on the periphery of the coil accommodating portion 12. A control circuit board 22 is electrically connected to the induction coil 20, and an adapter 24 is electrically connected to the control circuit board 22. The adapter 24 may be a component in the form of a plug.

Referring to FIG. 2, the four magnetic elements 30 are respectively mounted in the four magnetic element accommodating portions 14 on the carrier 10. In particular, the four magnetic element accommodating portions 14 are arranged on the same circumference (as shown by a dashed line), and any two adjacent magnetic elements 30 on the circumference have the same pitch on the circumference. Accordingly, four magnetic elements 30 are formed, etc Spacing and symmetrical arrangement. Referring again to FIGS. 1 and 2, the carrier 10 has a circuit board receiving cavity 18 adjacent to the coil receiving portion 12. The control circuit board 22 is installed in the circuit board accommodating cavity 18 to obtain a good positioning effect.

Referring to FIG. 3, an attached layer 50 is used to combine the carrier 10, the induction coil 20 and the magnetic element 30. In particular, the attachment layer 50 is used to seal the induction coil 20 and the magnetic element 30. A mobile device 60 does not have a wireless charging function. The combination of the carrier 10, the induction coil 20 and the magnetic element 30 is configured to be disposed on the mobile device 60, and the adapter 24, the control circuit board 22, the induction coil 20 and the mobile device 60 are formed electrically. connection. Further, the combination of the mobile device 60 and the carrier 10 can be placed on a wireless charging stand 62 for charging. The wireless charging base 62 has a transmitting coil 64. Four magnetic positioning elements 66 are mounted on the wireless charging base 62 and located on the transmitting coil 64.

It is worth noting that the number of the magnetic positioning elements 66 corresponds to the number of the magnetic elements 30. The arrangement of the magnetic positioning elements 66 is substantially the same as the arrangement of the magnetic elements 30. The above substantially same means that four magnetic positioning elements 66 are arranged in a co-circular form. When the combination of the mobile device 60 and the carrier 10 is placed on the wireless charging base 62 for charging, the magnetic element 30 and the magnetic The positioning element 66 just forms a one-to-one magnetic attraction state.

Another feasible form is that the four magnetic positioning elements 66 are replaced by a circular metal ring piece or magnetic ring that can be magnetically adsorbed. The combination of the mobile device 60 and the carrier 10 is placed on the wireless charging base 62. During charging, the magnetic element 30 and the metal ring piece (magnetic ring) can form a magnetic adsorption bond.

Please refer to FIGS. 4 and 5, since the arrangement of the magnetic positioning elements 66 and the arrangement of the magnetic elements 30 are substantially the same, even if a user places the mobile device 60 on the wireless charging base 62 at will, The magnetic element 30 and the magnetic positioning element 66 can still form a one-to-one magnetic attraction state, so that the mobile device 60 can obtain a stable positioning effect, and the transmitting coil 64 can be aligned with the induction coil 20. State of the mobile device 60 Charging efficiency. In other words, the technical means disclosed in the present invention can achieve the effects of facilitating the user to place the mobile device 60 and improving the charging efficiency.

Please refer to FIGS. 3, 4, and 5 again. Since the adapter 24 is a component in the form of a plug, the adapter 24 can be used to be inserted into a charging jack (not shown) of the mobile device 60, and borrow The mobile device 60 is connected to the charging device in a shape, and the induction coil 20 is electrically connected to a battery inside the mobile device 60.

Please refer to FIG. 6, another embodiment is that the carrier 10 is a cap, and the cap is used to cover the back of the mobile device 60. The carrier 10 (in the form of a cover) is a known protective cover of the moving device 60. The cover has a back plate portion 16, and the coil accommodating portion 12 and each of the magnetic element accommodating portions 14 are formed on the back plate portion 16. The induction coil 20 is mounted on the coil accommodating portion 12. Each of the magnetic elements 30 is mounted on the magnetic element accommodating portion 14. The carrier 10 is connected to the mobile device 60, and the adapter 24 is used to be inserted into a charging jack (not shown) of the mobile device 60, so that the induction coil 20 and the mobile device 60 can be electrically connected. The usage state (charging) of this embodiment is the same as that disclosed in FIG. 4 and / or FIG. 5.

Referring to FIG. 7, the carrier 10 may be a back plate 68 of the mobile device 60. The induction coil 20 and the magnetic elements 30 are disposed on an inner surface of the back plate 68. In other words, the induction coil 20 and each of the magnetic elements 30 are located inside the mobile device 60. An electrical connection can be formed between the induction coil 20 and a battery (not shown) of the mobile device 60 by an appropriate electrical connection method. The usage state (charging) of this embodiment is the same as that disclosed in FIG. 4 and / or FIG. 5. According to the above description, the mobile device 60 is an original device with a wireless charging function.

The above are the preferred embodiments and design drawings of the present invention, but the preferred embodiments and design drawings are merely examples, and are not intended to limit the scope of the right of the technology of the present invention. And other technical means, or the implementation of the scope of rights covered by the content of the "Scope of Patent Application" described below, shall not depart from the scope of the present invention but be the scope of the applicant's rights.

Claims (7)

A magnetic suction type wireless charging device is used to connect a mobile device and a wireless charging base for charging. The wireless charging device includes a carrier, a coil accommodating portion and four magnetic component accommodating portions, and a circuit. A board accommodating recess is adjacent to the coil accommodating part; an induction coil is installed in the coil accommodating part; a control circuit board is installed in the circuit board accommodating recess and is electrically connected to the induction coil; four The magnetic elements are respectively installed in the magnetic element accommodating portion; four of the magnetic elements are located on the periphery of the induction coil and are arranged on the same circumference to form a circle. The magnetic wireless charging device according to item 1 of the scope of the patent application, wherein the carrier is a plate body, the coil receiving portion is a groove, four magnetic component receiving portions are each a receiving slot, four The magnetic element accommodating portion is located on the circumference, and the distance between any two adjacent magnetic elements on the circumference is the same. According to the magnetic charging wireless charging device described in item 2 of the scope of patent application, it further includes an attachment layer, which is disposed on the surface of the carrier and opposite to the induction coil and four magnetic components. The magnetic-type wireless charging device according to item 1 of the patent application scope, wherein the carrier is a cover, the cover has a back plate portion, the coil receiving portion and each of the magnetic element receiving portions are formed on该 背板 部。 The back plate portion. The magnetic wireless charging device according to item 1 of the scope of patent application, wherein the carrier is a back plate of the mobile device, the induction coil and each of the magnetic components are disposed on the back plate and located inside the mobile device. . As described in the first patent application, the magnetic wireless charging device further includes an adapter, The adapter is electrically connected to the control circuit board, the control circuit board is electrically connected to the induction coil, and the adapter is used to insert and connect to the mobile device. According to the magnetic attraction wireless charging device described in the first item of the patent application scope, wherein the wireless charging base has a transmitting coil and a plurality of magnetic positioning elements, each of the magnetic positioning elements is mounted on the periphery of the transmitting coil and forms a circle, the The combination of the carrier and the mobile device is placed on the wireless charging base, the magnetic element attracts the magnetic positioning element, and the induction coil is aligned with the transmitting coil.