KR100665768B1 - Wireless charger - Google Patents

Abstract

The present invention relates to a wireless charger, comprising: a wireless charger for charging a plurality of portable devices in an inductively coupled manner, comprising: at least one charging source having a primary coil; And a charging space formed at a position opposite to each other about a charging source to accommodate each of the portable devices.

Storage, drawer, wireless, charger

Description

Wireless charger {

1 is a plan view of a conventional pad-type wireless charger.

2 is an exploded perspective view of a wireless charger according to a preferred embodiment of the present invention.

3 is a cross sectional view of FIG. 2.

4 is a perspective view schematically showing a wireless charger according to another preferred embodiment of the present invention.

5 is a perspective view showing a wireless charger according to another preferred embodiment of the present invention.

6 is a cross-sectional view of FIG.

Figure 7 is a schematic diagram showing a wireless charger according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100 ... Charger 102 ... Frame 104 ... Release

110 Filling space 120 Charging source 130 Shielding element

The present invention relates to a wireless charger, and more particularly, to a wireless charger capable of storing and charging a plurality of portable devices simultaneously or separately using electromagnetic induction.

In general, a device such as a mobile phone, a notebook, etc. has a storage battery therein is configured to be used while the user moves. However, such a portable mobile device includes a separate power storage device for power storage of a storage battery, and the power storage device is connected to a general use power source to provide a storage current to the storage battery of the portable mobile device. On the other hand, in order for the power storage device to provide the storage current to the storage battery of the portable mobile device, the charging matrix constituting the power storage device and the storage battery in the mobile mobile device must be electrically connected. In order to selectively connect the battery in the charging matrix and the portable mobile device as necessary, separate contact terminals have been configured in the charging matrix and the portable mobile device, respectively. Therefore, when charging the storage battery in the portable mobile device, the contact terminal of the portable mobile device and the contact terminal of the charging mother must be interconnected.

However, the conventional method of configuring the contact terminals in the portable mobile device and the charging mother as described above, in addition to the problem that the contact terminals protrude to the outside and look aesthetically unsightly, the contact terminals may be contaminated with this foreign material and thus the contact state is poor. There are many concerns, and in some cases, a short circuit may occur due to user's carelessness and the battery may be completely discharged.

In order to solve this problem, a method has been developed in which a rechargeable battery of a portable mobile device can be electrically coupled with a charging mother in a non-contact manner to charge energy of the charging mother.

In the non-contact charging method, a primary circuit of a transformer operating at a high frequency is formed in a charging matrix, and a secondary circuit is configured in a battery side, that is, in a portable mobile device, whereby the current of the charging matrix, that is, energy is stored in the mobile battery by magnetic coupling. In the way it is provided. Contactless charging with magnetic coupling is already widely used in some applications (eg electric toothbrushes, electric shavers, etc.). However, if you want to apply it to portable mobile devices such as mobile phones, MP3 players, MD players, Walkmans, and notebook computers, the volume and weight added to the mobile mobile device must be specially small, and the battery of the battery in the mobile mobile device in the contactless state is required. It should be possible to know the discharge state.

As shown in FIG. 1, the conventional wireless charging device 10 sections the charging pad 12 to prevent power loss and secure safety in order to charge the plurality of portable devices 1 in a large area. Each section takes the form of a circuit suitable for the corresponding portable device 1 and for driving each such section separately. Since the wireless charging device 10 must have different recognition units 14 for the recognition of the device, the circuit configuration becomes complicated and there is a limitation in the design of the charging pad 12.

The present invention has been conceived to solve the above-described problems, the portable device can be easily recognized by simply putting one device in one charging space to charge the plurality of portable devices with a simple circuit configuration. The goal is to provide a wireless charger with an improved structure to improve performance.

A wireless charger according to a preferred embodiment of the present invention for achieving the above object, the wireless charger for charging a plurality of portable devices in an inductive coupling method comprising: at least one charging source having a primary coil; And a charging space formed at a position facing each other about the charging source to accommodate each of the portable devices.

Preferably, the filling sources are respectively fixed to the separators of the stepped frame; The filling space is movably coupled to the space formed between the separating portion.

Preferably, the filling sources are respectively fixed to the separators of the stepped frame; The filling space has an open portion fixed to a space formed between the separating portions and having one side open.

Preferably, the wireless charger according to the present invention further includes a shielding member provided on at least one side of the charging space within a range that does not affect the magnetic force lines formed in the charging space.

Preferably, the shielding member is one of a form applied to the plate of the filling space, a form attached to the film, or a form in which the shielding agent is mixed with the polymer resin, or a form contained in the colorant.

Preferably, the frames are positioned next to each other so that the charging sources can be located in parallel with each other, and a shielding member is formed only at the outermost surface of the remaining charging space except for a portion in which the frames are perpendicular to each other to form a predetermined magnetic field. do.

In order to achieve the above object, a wireless charger according to another preferred embodiment of the present invention is a wireless charger for charging a plurality of portable devices in an inductive coupling method, comprising: a hollow cylindrical frame having an open end and a closed end; And a charging source installed in a longitudinal direction of the frame to partition the inside of the frame into a predetermined space and to store each portable device in the divided space.

Preferably, the wireless charger further includes a shielding member installed on an outer wall of the frame.

Preferably, the frame is cylindrical or polygonal.

Hereinafter, a wireless charger according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Various embodiments of the present invention, their advantages and features will be apparent from the following detailed description, some of which are apparent to those skilled in the art by reference to the following detailed description of the invention and by reference to the drawings or by the practice of the invention. Will lose. The advantages and features of the invention are realized and attained by means, procedures and combinations particularly pointed out in the appended claims and their equivalents.

In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and is shown in a manner that describes specific embodiments in which the invention may be practiced. The following examples are described in sufficient detail to enable those skilled in the art to practice the invention, and other embodiments may be used. In addition, it should be understood that various structural changes may be made without departing from the scope of the present invention. Therefore, this detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims and their equivalents. In the description of the present invention, "vertical", "horizontal", "side", "up", "bottom", "rising", "falling", etc., refer to the position of the wireless charger in the context of the drawings and description. It should be regarded in a relative sense, not in its absolute sense.

2 is an exploded perspective view of a wireless charger according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view of the combination of FIG.

2 and 3, the wireless charger 100 according to the present embodiment includes a drawer-type frame 102 in which spaces into which a plurality of hexahedral filling spaces 110 can be inserted, respectively, are formed vertically at predetermined intervals. The pad-type charging source 120 is formed in each of the separation unit 104 separating the charging space 110 and connected to a power source to form a magnetic field, and shields all sides of the charging space 110. The shielding member 130 is provided.

The frame 102 should be interpreted as including both the number of portable devices required to be charged and any structure having a drawer skeleton of a scale capable of forming a charging space 110 suitable for the size of the portable device. . The frame 102 has a structure in which the filling source 110 can be installed and an internal structure in which the drawer forming the filling space 110 can slide. In this case, it will be apparent to those skilled in the art that the drawer has a sliding structure suitable for its internal structure, so the detailed description thereof will be omitted.

The drawer forming the filling space 110 has an open top and a closed bottom and all sides, and may be manufactured by metal, glass, and polymer materials, but may be made of polymer and glass materials in consideration of the influence on magnetic fields. It is most effective to be made.

The charging source 120 should be interpreted as including all coil structures capable of generating induced electromotive force by the primary coil 122 by an applied power source. In addition, the charging source 120 may include many other electrical circuits accompanying the primary coil 122. Each charging source 120 is electrically connected to each other, and each charging source 120 may independently recognize and charge the electronic device.

The shielding member 130 is for shielding the magnetic field unnecessary for filling, and may be formed by applying a conventional shielding agent to four sides of a drawer, adhering a shielding sheet on a film, or mixing the shielding agent with a polymer resin. In some cases, it may be replaced by applying a colorant containing a shielding agent.

In the wireless charger as described above, induced electromotive force is generated in the direction of the arrow of FIG. 3. Such a drawer-type wireless charger can charge individual portable devices in each charging space 110, and can configure a plurality of charges in a simple circuit, and recognize a device by putting only one device in one charging space. It is possible to easily, and the shielding treatment of the four surfaces except the surface in which the coil is present to ensure the safety of the charger, in the structure that can receive the magnetic lines from the two primary coils, it is possible to charge more quickly, A single coil pad can transmit magnetic force lines to both portable devices located above and below the coil pad.

4 is a perspective view schematically showing a wireless charger according to another preferred embodiment of the present invention. The same components as those described in FIGS. 2 and 3 are the same members with the same functions.

As shown in FIG. 4, unlike the charger of FIG. 3, the charger 200 is a so-called multi-drawer, and the charging space 110 is not only formed up and down, but also in the horizontal direction of each charging space. It is characterized in that the magnetic force lines are formed in the direction of the arrow by being formed.

The charger 200 has a structure in which all the outermost surfaces are shielded using the shielding member 130 except for the separating part 104 of the charging space that is in contact with the horizontal. By doing so, the magnetic field generated by the charger 200 can be rotated as shown by the arrow in the figure to enable charging of more devices, and the effect of receiving individual magnetic fields from a plurality of coils can be increased.

In FIG. 4, two rows of drawers in the vertical direction and two rows in the horizontal direction are shown, but a larger number of drawers for the charging space can be expanded in the horizontal and vertical directions.

5 is a perspective view showing a wireless charger according to another preferred embodiment of the present invention, Figure 6 is a cross-sectional view of FIG. The same components as those described in FIGS. 2 and 3 are the same members with the same functions.

5 and 6, the charger 300 has a cylindrical frame 106 of a predetermined length having an upper end open and a lower end closed, and a coil pad type plate (inside the hollow frame 106). A predetermined number of 108 is provided to form a predetermined charging space 110, thereby forming a magnetic field in the direction of the arrow of FIG. The outer wall of the frame 106 is preferably shielded by the shielding member 130. In addition, the charger 300 may be deformed into a structure that can be pushed and closed in a frame of a fixed skeleton.

7 is a schematic diagram illustrating a wireless charger according to another exemplary embodiment of the present invention. The same components as those described in FIGS. 2 and 3 are the same members with the same functions.

Referring to FIG. 7, unlike the wireless charger 300 of FIG. 2, the charging space 310, in which the portable device can be stored, is fixed to the frame 302 and any of the side surfaces of the frame is different from that of FIG. 2. One is provided with an open portion 320 open to accommodate the portable device in the charging space (310). Unlike the drawer type, the wireless charger 300 according to the present exemplary embodiment may accommodate the portable device through the opening 320. In this case, the shielding member 330 is preferably provided on the surface excluding the opening 320 so as not to affect the magnetic force line toward the portable device.

As described above, the drawer type wireless charger according to the present invention has the following effects.

First, by configuring the charger as a retractable type, it is possible to charge a plurality of portable devices with a simple circuit.

Second, although a plurality of charges are possible in one charging space, recognition of the device can be easily performed by putting only one deduction.

Third, stability can be ensured by shielding within a range that does not reduce the line of magnetic force from the coil to the electronic device.

Fourth, in a structure capable of receiving magnetic lines of force from two primary coils, more rapid charging is possible.

Fifth, the charging efficiency is increased because the structure located on the coil pad, the lower portion of the coil pad can transmit magnetic force lines to the device.

The above detailed description is for illustrative purposes only and is not intended to limit the scope of the invention. Many other embodiments will be apparent to those skilled in the art upon reading or understanding the above detailed description. It should be noted that the embodiments discussed in other parts of the detailed description and discussed with reference to other figures may be combined to form additional embodiments of the present invention. Accordingly, the scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims (9)

In a wireless charger for charging a plurality of portable devices in an inductive coupling method: At least one charging source in which a primary coil is formed; And And a charging space formed at a position facing each other about the charging source so as to accommodate each of the portable devices. The method of claim 1, The charging sources are respectively secured to the separators of the stepped frame; The charging space is a wireless charger, characterized in that coupled to the space formed between the separator to be movable. The method of claim 1, The charging sources are respectively secured to the separators of the stepped frame; The charging space is a wireless charger, characterized in that it has an open portion fixed to the space formed between the separation portion and one side open. The method according to claim 1 or 2, And a shielding member provided on at least one side of the charging space within a range that does not affect the magnetic force lines formed in the charging space. The method of claim 4, wherein The shielding member is a wireless charger, characterized in that any one of the form applied to the plate of the filling space, the form attached to the film, or the shielding agent is mixed with the polymer resin, or the form contained in the colorant. The method according to claim 2 or 3, The frames are positioned next to each other so that the charging sources can be located parallel to each other, A wireless charger, characterized in that the shielding member is formed only on the outermost surface of the remaining charging space except for a portion in which the frame is in contact with the vertical. In a wireless charger for charging a plurality of portable devices in an inductive coupling method: A hollow cylindrical frame having an open end and a closed end; And And a charging source installed in the longitudinal direction of the frame so as to partition the inside of the frame into a predetermined space and accommodate each large-size device in the partitioned space, and having a primary coil formed therein. charger. The method of claim 7, wherein And a shielding member provided on an outer wall of the frame. The method according to claim 7 or 8, And the frame is cylindrical or polygonal.

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