CN110138095B

CN110138095B - Wireless power supply device and electrical equipment

Info

Publication number: CN110138095B
Application number: CN201810136448.4A
Authority: CN
Inventors: 王晨希; 钟元; 邵明蕙
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2023-06-16
Anticipated expiration: 2038-02-09
Also published as: KR20190096827A; CN110138095A

Abstract

The invention discloses a wireless power supply device, comprising: a first coil; and a second coil adapted to be electromagnetically coupled to the first coil, one of the first coil and the second coil being a transmitting coil and the other being a receiving coil. When the first coil and the second coil are moved relative to each other in a plurality of different directions, the first coil and the second coil may remain electromagnetically coupled to continuously supply power to a load. In the invention, the wireless power supply device can still keep good electromagnetic coupling when relatively moving in a plurality of different directions. Therefore, the wireless power supply device of the present invention can be applied to moving parts that need to move in a plurality of different directions, thereby expanding the application range of the wireless power supply device.

Description

Wireless power supply device and electrical equipment

Technical Field

The invention relates to a wireless power supply device and electrical equipment comprising the same.

Background

The wireless power supply generally includes a transmitting coil and a receiving coil that is electromagnetically coupled to the transmitting coil to provide power to the electrical load. In the prior art, in order to ensure that the receiving coil and the transmitting coil can always maintain good electromagnetic coupling, the transmitting coil and the receiving coil are usually fixedly mounted on a stationary part of the electrical consumer and cannot move relative to each other.

However, in practical application, the transmitting coil or the receiving coil is sometimes required to be mounted on a moving part of the electric equipment, but the existing wireless power supply device can only move in a single direction under the condition of keeping electromagnetic coupling, so that the application of the wireless power supply device on the moving part is limited.

Disclosure of Invention

An object of the present invention is to solve at least one of the above-mentioned problems and disadvantages of the prior art.

According to an aspect of the present invention, there is provided a wireless power supply apparatus comprising: a first coil; and a second coil adapted to be electromagnetically coupled to the first coil, one of the first coil and the second coil being a transmitting coil and the other being a receiving coil. When the first coil and the second coil are moved relative to each other in a plurality of different directions, the first coil and the second coil may remain electromagnetically coupled to continuously supply power to a load.

According to an exemplary embodiment of the invention, the first coil and the second coil are relatively translatable in at least two different directions; when the first coil and the second coil are translated relative to each other in at least one of the at least two different directions, the first coil and the second coil may remain electromagnetically coupled for continued power to a load.

According to another exemplary embodiment of the present invention, the first coil and the second coil are relatively translatable in at least one direction and relatively rotatable about an axis in a clockwise or counter-clockwise direction; the first coil and the second coil may remain electromagnetically coupled for continuous power to a load when the first coil and the second coil are relatively translated in at least one direction and/or relatively rotated about the axis in a clockwise direction or a counter-clockwise direction.

According to another exemplary embodiment of the present invention, the first coil and the second coil are relatively translatable in a first direction and a second direction perpendicular to the first direction; when the first coil and the second coil are translated relative to each other in the first direction and/or the second direction, the first coil and the second coil may remain electromagnetically coupled for continuous power to a load.

According to another exemplary embodiment of the present invention, the axis is parallel to the first direction.

According to another exemplary embodiment of the present invention, the first coil is in a column shape, the second coil is in a rectangular frame shape, and the first coil extends into an inner space of the second coil and is not in contact with the second coil.

According to another exemplary embodiment of the present invention, the axis is a central axis of the first coil, the first direction is parallel to the central axis of the first coil, and the second direction is perpendicular to the central axis of the first coil.

According to another exemplary embodiment of the present invention, when the first coil and the second coil are relatively translated in the first direction, the first coil and the second coil may remain electromagnetically coupled for continuous power supply to a load; when the first coil and the second coil are translated relative to each other in the second direction, the first coil and the second coil may remain electromagnetically coupled for continuous power to a load; when the first and second coils are rotated about the axis in either a clockwise or counterclockwise direction, the first and second coils may remain electromagnetically coupled for continued power to a load.

According to another exemplary embodiment of the present invention, the first coil and the second coil may remain electromagnetically coupled for continuously powering a load when the first coil and the second coil are relatively translated in the first direction and the second direction.

According to another exemplary embodiment of the present invention, the first coil and the second coil may remain electromagnetically coupled for continuous power supply to a load when the first coil and the second coil are relatively translated in the first direction or the second direction and rotated about the axis in a clockwise direction or a counterclockwise direction.

According to another aspect of the present invention, there is provided an electrical apparatus comprising the aforementioned wireless power supply, a first coil of the wireless power supply being mounted on a first component of the electrical apparatus, a second coil of the wireless power supply being mounted on a second component of the electrical apparatus, the first and second components being relatively movable in a plurality of different directions; when the first and second members are moved relative to each other in a plurality of different directions, the first and second coils may remain electromagnetically coupled to continuously power the load of the electrical device.

According to an exemplary embodiment of the present invention, the electrical device is a refrigerator, the first coil of the wireless power supply device is mounted on an outer sidewall of a drawer of the refrigerator, and the second coil of the wireless power supply device is mounted on an inner sidewall of a housing of the refrigerator; the first coil and the second coil translate relative to each other in a horizontal direction and remain electromagnetically coupled at all times as the drawer is pulled out or pushed in the horizontal direction, so as to continuously supply power to a load in the refrigerator.

According to another exemplary embodiment of the present invention, the electrical device is a refrigerator, the first coil of the wireless power supply device is mounted on an inner side wall of a housing of the refrigerator, and the second coil of the wireless power supply device is mounted on an outer side wall of a drawer of the refrigerator; the first coil and the second coil translate relative to each other in a horizontal direction and remain electromagnetically coupled at all times as the drawer is pulled out or pushed in the horizontal direction, so as to continuously supply power to a load in the refrigerator.

According to another exemplary embodiment of the present invention, the electric device is a refrigerator, the first coil of the wireless power supply device is mounted on an outer sidewall of a shelf of the refrigerator, and the second coil of the wireless power supply device is mounted on an inner sidewall of a housing of the refrigerator; the first coil and the second coil translate relatively in the horizontal direction and remain electromagnetically coupled at all times as the shelf is pulled outwardly or pushed inwardly in the horizontal direction so as to continuously supply power to the load in the refrigerator.

According to another exemplary embodiment of the present invention, the electrical device is a refrigerator, the first coil of the wireless power supply device is mounted on an inner sidewall of a housing of the refrigerator, and the second coil of the wireless power supply device is mounted on an outer sidewall of a shelf of the refrigerator; the first coil and the second coil translate relatively in the horizontal direction and remain electromagnetically coupled at all times as the shelf is pulled outwardly or pushed inwardly in the horizontal direction so as to continuously supply power to the load in the refrigerator.

According to another exemplary embodiment of the present invention, the electrical device is an air conditioner, the air conditioner includes a main body housing and a sliding panel slidably mounted on the main body housing, an air blowing port is provided on the main body housing, and the sliding panel is slidable up and down in a vertical direction so as to close or open the air blowing port; the first coil of the wireless power supply device is arranged on the inner wall of the sliding panel of the air conditioner, and the second coil of the wireless power supply device is arranged on the outer wall of the main machine shell of the air conditioner; the first coil and the second coil are relatively translated in a vertical direction while sliding the sliding panel up and down in the vertical direction, and remain electromagnetically coupled at all times so as to continuously supply power to a load in an air conditioner.

According to another exemplary embodiment of the present invention, the electrical device is an air conditioner, the air conditioner includes a main body housing and a sliding panel slidably mounted on the main body housing, an air blowing port is provided on the main body housing, and the sliding panel is slidable up and down in a vertical direction so as to close or open the air blowing port; the first coil of the wireless power supply device is arranged on the outer wall of the main machine shell of the air conditioner, and the second coil of the wireless power supply device is arranged on the inner wall of the sliding panel of the air conditioner; the first coil and the second coil are relatively translated in a vertical direction while sliding the sliding panel up and down in the vertical direction, and remain electromagnetically coupled at all times so as to continuously supply power to a load in an air conditioner.

In the various exemplary embodiments of the present invention described above, the wireless power unit may maintain good electromagnetic coupling when relatively moved in a plurality of different directions. Therefore, the wireless power supply device of the present invention can be applied to moving parts that need to move in a plurality of different directions, thereby expanding the application range of the wireless power supply device.

Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, which provide a thorough understanding of the present invention.

Drawings

FIG. 1 shows a schematic diagram of a wireless power supply according to an exemplary embodiment of the present invention;

FIG. 2 is a schematic view of the wireless power supply of FIG. 1 translating in a first direction;

FIG. 3 is a schematic view showing the relative translation of the wireless power supply device shown in FIG. 1 in a second direction;

FIG. 4 is a schematic view of the wireless power supply of FIG. 1 rotated about an axis;

FIG. 5 shows a schematic view of a first coil of a wireless power supply mounted on a drawer of a refrigerator;

fig. 6 shows a schematic view of a second coil of the wireless power supply device mounted on a housing of the refrigerator;

FIG. 7 shows a schematic view of a first coil and a second coil maintaining electromagnetic coupling as a drawer of a refrigerator moves relative to a housing;

fig. 8 shows a schematic view of a first coil of the wireless power supply device mounted on a housing of a refrigerator;

FIG. 9 shows a schematic view of a second coil of the wireless power supply installed on a drawer of a refrigerator;

fig. 10 shows a schematic view of a first coil of a wireless power supply apparatus mounted on a shelf of a refrigerator;

fig. 11 shows a schematic view of a second coil of the wireless power supply device mounted on a housing of the refrigerator;

FIG. 12 shows a schematic view of a refrigerator in which a first coil is kept electromagnetically coupled to a second coil as a shelf moves relative to a housing;

fig. 13 shows a schematic view of a first coil of the wireless power supply device mounted on a housing of a refrigerator;

fig. 14 shows a schematic view of a wireless power supply apparatus with a second coil mounted on a shelf of a refrigerator;

FIG. 15 is a schematic view showing a first coil of the wireless power supply device mounted on a sliding panel of an air conditioner;

FIG. 16 is a schematic diagram showing a second coil of the wireless power supply device mounted on a main housing of an air conditioner;

fig. 17 shows a schematic view of the first coil and the second coil maintaining electromagnetic coupling when the sliding panel of the air conditioner moves relative to the main body case.

Detailed Description

The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept and should not be taken as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in order to simplify the drawings.

According to one general concept of the present invention, there is provided a wireless power supply apparatus including: a first coil; and a second coil adapted to be electromagnetically coupled to the first coil, one of the first coil and the second coil being a transmitting coil and the other being a receiving coil. When the first coil and the second coil are moved relative to each other in a plurality of different directions, the first coil and the second coil may remain electromagnetically coupled to continuously supply power to a load.

FIG. 1 shows a schematic diagram of a wireless power supply according to an exemplary embodiment of the present invention; FIG. 2 is a schematic view of the wireless power supply of FIG. 1 translating in a first direction; FIG. 3 is a schematic view showing the relative translation of the wireless power supply device shown in FIG. 1 in a second direction; fig. 4 shows a schematic view of the wireless power supply device shown in fig. 1 rotated about an axis.

As shown in fig. 1 to 4, in the illustrated embodiment, the wireless power supply device mainly includes a first coil 10 and a second coil 20. One of the first coil 10 and the second coil 20 is a transmitting coil and the other is a receiving coil, the second coil 20 being adapted to be electromagnetically coupled with the first coil 10 for supplying power to a load.

As shown in fig. 2-4, in the illustrated embodiment, the first coil 10 and the second coil 20 are relatively movable in a plurality of different directions. When the first coil 10 and the second coil 20 are relatively moved in a plurality of different directions, the first coil 10 and the second coil 20 may still maintain electromagnetic coupling so as to continuously supply power to the load.

As shown in fig. 2 and 3, in the illustrated embodiment, the first coil 10 and the second coil 20 may be relatively translatable in at least two different directions Z, Y. When the first coil 10 and the second coil 20 are translated relative to each other in at least one of at least two different directions Z, Y, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continued power to the load.

As shown in fig. 2, 3 and 4, in the illustrated embodiment, the first coil 10 and the second coil 20 are relatively translatable in at least one direction Z, Y (see fig. 2 and 3) and relatively rotatable about an axis X in a clockwise or counter-clockwise direction (see fig. 4). When the first coil 10 and the second coil 20 are relatively translated in at least one direction Z, Y and/or relatively rotated in a clockwise or counterclockwise direction about the axis X, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continued power to the load.

As shown in fig. 2 and 3, in the illustrated embodiment, the first coil 10 and the second coil 20 are relatively translatable in a first direction Z and a second direction Y perpendicular to the first direction Z. When the first coil 10 and the second coil 20 are translated relative to each other in the first direction Z and/or the second direction Y, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continuous power supply to the load.

As shown in fig. 2, 3 and 4, in the illustrated embodiment, the axis X is parallel to the first direction Z.

As shown in fig. 1 to 4, in the illustrated embodiment, the first coil 10 has a cylindrical shape, the second coil 20 has a rectangular frame shape, and the first coil 10 extends into the inner space of the second coil 20 and is not in contact with the second coil 20.

As shown in fig. 1 to 4, in the illustrated embodiment, the aforementioned axis X is a central axis of the first coil 10, the first direction Z is parallel to the central axis of the first coil 10, and the second direction Y is perpendicular to the central axis of the first coil 10.

As shown in fig. 2, in the illustrated embodiment, when the first coil 10 and the second coil 20 are relatively translated in the first direction Z, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continuous power supply to the load.

As shown in fig. 3, in the illustrated embodiment, when the first coil 10 and the second coil 20 are relatively translated in the second direction Y, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continuous power supply to the load.

As shown in fig. 4, when the first coil 10 and the second coil 20 are rotated in a clockwise direction or a counterclockwise direction about the axis X, the first coil 10 and the second coil 20 may remain electromagnetically coupled so as to continuously supply power to the load.

As shown in fig. 2 and 3, in the illustrated embodiment, when the first coil 10 and the second coil 20 are relatively translated in the first direction Z and the second direction Y, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continuous power supply to the load.

As shown in fig. 2-4, in the illustrated embodiment, when the first coil 10 and the second coil 20 are relatively translated in the first direction Z or the second direction Y and rotated about the axis X in a clockwise direction or a counterclockwise direction, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continuous power to the load.

As shown in fig. 2-4, in the illustrated embodiment, when the first coil 10 and the second coil 20 are relatively translated in the first direction Z and the second direction Y and rotated about the axis X in a clockwise or counterclockwise direction, the first coil 10 and the second coil 20 may remain electromagnetically coupled for continued power to the load.

In another exemplary embodiment of the present invention, an electrical device is also disclosed, comprising the aforementioned wireless power supply. The first coil 10 of the wireless power supply is mounted on a first part of the electrical device and the second coil 20 of the wireless power supply is mounted on a second part of the electrical device, the first and second parts being relatively movable in a plurality of different directions. When the first and second members are moved relative to each other in a plurality of different directions, the first and second coils may remain electromagnetically coupled to continuously power the load of the electrical device.

Fig. 5 shows a schematic view of the first coil 10 of the wireless power supply device mounted on the drawer 100 of the refrigerator; fig. 6 shows a schematic view of the second coil 20 of the wireless power supply device mounted on the housing 200 of the refrigerator; fig. 7 shows a schematic view of the first coil 10 and the second coil 20 kept electromagnetically coupled when the drawer 100 of the refrigerator moves with respect to the case 200.

As shown in fig. 5 to 7, in the illustrated embodiment, the electric device is a refrigerator, the first coil 10 of the wireless power supply device is installed on the outer sidewall of the drawer 100 of the refrigerator, and the second coil 20 of the wireless power supply device is installed on the inner sidewall of the case 200 of the refrigerator.

As shown in fig. 5 to 7, in the illustrated embodiment, when the drawer 100 is pulled out or pushed in a horizontal direction, the first coil 10 and the second coil 20 are relatively translated in the horizontal direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the refrigerator.

Note that the present invention is not limited to the foregoing embodiment, and for example, fig. 8 and 9 show another embodiment of the present invention. Wherein fig. 8 shows a schematic view of the first coil 10 of the wireless power supply device mounted on the housing 200 of the refrigerator; fig. 9 shows a schematic view of the second coil 20 of the wireless power supply device mounted on the drawer 100 of the refrigerator.

As shown in fig. 8 and 9, in the illustrated embodiment, the electric device is a refrigerator, the first coil 10 of the wireless power supply device is installed on the inner sidewall of the case 200 of the refrigerator, and the second coil 20 of the wireless power supply device is installed on the outer sidewall of the drawer 100 of the refrigerator.

As shown in fig. 8 and 9, in the illustrated embodiment, when the drawer 100 is pulled out or pushed in a horizontal direction, the first coil 10 and the second coil 20 are relatively translated in the horizontal direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the refrigerator.

Fig. 10 shows a schematic view of the first coil 10 of the wireless power supply apparatus mounted on a shelf 100' of the refrigerator; fig. 11 shows a schematic view of the wireless power supply device with the second coil 20 mounted on the housing 200 of the refrigerator; fig. 12 shows a schematic view of the first coil 10 and the second coil 20 maintaining electromagnetic coupling when the shelf 100' of the refrigerator moves relative to the case 200.

As shown in fig. 10 to 12, in the illustrated embodiment, the electric device is a refrigerator, the first coil 10 of the wireless power supply device is installed on the outer side wall of the shelf 100' of the refrigerator, and the second coil 20 of the wireless power supply device is installed on the inner side wall of the case 200 of the refrigerator.

As shown in fig. 10 to 12, in the illustrated embodiment, when the shelf 100' is pulled out or pushed in a horizontal direction, the first coil 10 and the second coil 20 are relatively translated in the horizontal direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the refrigerator.

Note that the present invention is not limited to the foregoing embodiment, and for example, fig. 13 and 14 show another embodiment of the present invention. Wherein fig. 13 shows a schematic view of the first coil 10 of the wireless power supply device mounted on the housing 200 of the refrigerator; fig. 14 shows a schematic view of the second coil 20 of the wireless power supply apparatus mounted on the shelf 100' of the refrigerator.

As shown in fig. 13 and 14, in the illustrated embodiment, the electric device is a refrigerator, the first coil 10 of the wireless power supply device is installed on the inner sidewall of the case 200 of the refrigerator, and the second coil 20 of the wireless power supply device is installed on the outer sidewall of the shelf 100' of the refrigerator.

As shown in fig. 13 and 14, in the illustrated embodiment, when the shelf 100' is pulled out or pushed in a horizontal direction, the first coil 10 and the second coil 20 are relatively translated in the horizontal direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the refrigerator.

Fig. 15 shows a schematic view of the first coil 10 of the wireless power supply device mounted on the sliding panel 300 of the air conditioner; fig. 16 shows a schematic view of the second coil 20 of the wireless power supply device mounted on the main body case 400 of the air conditioner; fig. 17 shows a schematic view of the first coil 10 and the second coil 20 kept electromagnetically coupled when the sliding panel 300 of the air conditioner moves relative to the main body case 400.

As shown in fig. 15 to 17, in the illustrated embodiment, the electric device is an air conditioner including a main body case 400 and a sliding panel 300 slidably mounted on the main body case 400, and an air blowing port 410 is provided on the main body case 400, and the sliding panel 300 is vertically slidable up and down so as to close or open the air blowing port 410.

As shown in fig. 15 to 17, in the illustrated embodiment, the first coil 10 of the wireless power supply device is installed on the inner wall of the sliding panel 300 of the air conditioner, and the second coil 20 of the wireless power supply device is installed on the outer wall of the main body case 400 of the air conditioner.

As shown in fig. 15 to 17, in the illustrated embodiment, when the sliding panel 300 is slid up and down in the vertical direction, the first coil 10 and the second coil 20 are relatively translated in the vertical direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the air conditioner.

Note that the present invention is not limited to the foregoing embodiment, and for example, in another embodiment of the present invention, the first coil 10 of the wireless power supply device may be mounted on the outer wall of the main body case 400 of the air conditioner, and the second coil 20 of the wireless power supply device may be mounted on the inner wall of the sliding panel 300 of the air conditioner. In this way, when the sliding panel 300 is slid up and down in the vertical direction, the first coil 10 and the second coil 20 are relatively translated in the vertical direction and remain electromagnetically coupled at all times so as to continuously supply power to the load in the air conditioner.

Those skilled in the art will appreciate that the embodiments described above are exemplary and that modifications may be made by those skilled in the art, and that the structures described in the various embodiments may be freely combined without conflict in terms of structure or principle.

Although the present invention has been described with reference to the accompanying drawings, the examples disclosed in the drawings are intended to illustrate preferred embodiments of the invention and are not to be construed as limiting the invention.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and that the word "a" or "an" does not exclude a plurality. In addition, any element numbers of the claims should not be construed as limiting the scope of the invention.

Claims

1. A wireless power supply apparatus, comprising:

a first coil (10); and

a second coil (20) adapted to be electromagnetically coupled to said first coil (10),

one of the first coil (10) and the second coil (20) is a transmitting coil, the other coil is a receiving coil,

the method is characterized in that:

when the first coil (10) and the second coil (20) are relatively moved in a plurality of different directions including two different relative translational directions (Z, Y) and two opposite rotational directions about an axis (X), the first coil (10) and the second coil (20) may remain electromagnetically coupled to continuously power a load, and

the first coil (10) and the second coil (20) are arranged such that:

when the second coil (20) translates to either position relative to the first coil (10) in one of the two different relative translation directions, the second coil (20) is also allowed to translate relative to the first coil (10) in the other of the two different relative translation directions and rotate relative to the first coil (10) about the axis (X); and is also provided with

The second coil (20) is also allowed to translate relative to the first coil (10) in either of the two different relative translation directions when the second coil (20) is rotated about the axis (X) by any angle.

2. The wireless power supply of claim 1, wherein:

-the first coil (10) and the second coil (20) are relatively translatable in at least two different directions (Z, Y);

when the first coil (10) and the second coil (20) are relatively translated in at least one of the at least two different directions (Z, Y), the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load.

3. The wireless power supply of claim 1, wherein:

-the first coil (10) and the second coil (20) are relatively translatable in at least one direction (Z, Y) and relatively rotatable about an axis (X) in a clockwise or counter-clockwise direction;

when the first coil (10) and the second coil (20) are relatively translated in at least one direction (Z, Y) and/or relatively rotated about the axis (X) in a clockwise or counter-clockwise direction, the first coil (10) and the second coil (20) may remain electromagnetically coupled for continued power to a load.

4. A wireless power supply according to claim 2 or 3, characterized in that:

-said first coil (10) and said second coil (20) are relatively translatable in a first direction (Z) and in a second direction (Y) perpendicular to said first direction (Z);

when the first coil (10) and the second coil (20) are relatively translated in the first direction (Z) and/or the second direction (Y), the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load.

5. The wireless power supply of claim 4 wherein: the axis (X) is parallel to the first direction (Z).

6. The wireless power supply of claim 5 wherein:

the first coil (10) is columnar, the second coil (20) is rectangular frame-shaped, and the first coil (10) stretches into the inner space of the second coil (20) and is not contacted with the second coil (20).

7. The wireless power supply of claim 6 wherein:

the axis (X) is the central axis of the first coil (10), the first direction (Z) is parallel to the central axis of the first coil (10), and the second direction (Y) is perpendicular to the central axis of the first coil (10).

8. The wireless power supply of claim 7 wherein:

when the first coil (10) and the second coil (20) are relatively translated in the first direction (Z), the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load;

when the first coil (10) and the second coil (20) are relatively translated in the second direction (Y), the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load;

when the first coil (10) and the second coil (20) rotate about the axis (X) in a clockwise or counter-clockwise direction, the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load.

9. The wireless power supply of claim 8, wherein:

when the first coil (10) and the second coil (20) are relatively translated in the first direction (Z) and the second direction (Y), the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power supply to a load.

10. The wireless power supply of claim 8, wherein:

when the first coil (10) and the second coil (20) are relatively translated in the first direction (Z) or the second direction (Y) and rotated about the axis (X) in a clockwise or counter-clockwise direction, the first coil (10) and the second coil (20) may remain electromagnetically coupled for continuous power to a load.

11. An electrical device, characterized in that:

the electrical device comprising the wireless power supply of any one of claims 1-10, a first coil (10) of the wireless power supply being mounted on a first component of the electrical device, a second coil (20) of the wireless power supply being mounted on a second component of the electrical device, the first and second components being relatively movable in a plurality of different directions;

when the first and second members are moved relative to each other in a plurality of different directions, the first and second coils may remain electromagnetically coupled to continuously power the load of the electrical device.

12. The electrical device of claim 11, wherein:

the electric equipment is a refrigerator, a first coil (10) of the wireless power supply device is arranged on the outer side wall of a drawer (100) of the refrigerator, and a second coil (20) of the wireless power supply device is arranged on the inner side wall of a shell (200) of the refrigerator;

when the drawer (100) is pulled out or pushed in the horizontal direction, the first coil (10) and the second coil (20) are relatively translated in the horizontal direction and remain electromagnetically coupled at all times so as to continuously supply power to a load in the refrigerator.

13. The electrical device of claim 11, wherein:

the electric equipment is a refrigerator, a first coil (10) of the wireless power supply device is arranged on the inner side wall of a shell (200) of the refrigerator, and a second coil (20) of the wireless power supply device is arranged on the outer side wall of a drawer (100) of the refrigerator;

14. The electrical device of claim 11, wherein:

the electric equipment is a refrigerator, a first coil (10) of the wireless power supply device is arranged on the outer side wall of a shelf (100') of the refrigerator, and a second coil (20) of the wireless power supply device is arranged on the inner side wall of a shell (200) of the refrigerator;

the first coil (10) and the second coil (20) translate relatively in the horizontal direction and remain electromagnetically coupled at all times as the shelf (100') is pulled out or pushed in the horizontal direction, so as to continuously supply power to the load in the refrigerator.

15. The electrical device of claim 11, wherein:

the electric equipment is a refrigerator, a first coil (10) of the wireless power supply device is arranged on the inner side wall of a shell (200) of the refrigerator, and a second coil (20) of the wireless power supply device is arranged on the outer side wall of a shelf (100') of the refrigerator;

16. The electrical device of claim 11, wherein:

the electrical equipment is an air conditioner, the air conditioner comprises a main machine shell (400) and a sliding panel (300) which is slidably arranged on the main machine shell (400), an air blowing opening (410) is arranged on the main machine shell (400), and the sliding panel (300) can slide up and down along the vertical direction so as to close or open the air blowing opening (410);

the first coil (10) of the wireless power supply device is arranged on the inner wall of the sliding panel (300) of the air conditioner, and the second coil (20) of the wireless power supply device is arranged on the outer wall of the main machine shell (400) of the air conditioner;

the first coil (10) and the second coil (20) are relatively translated in a vertical direction while sliding the sliding panel (300) up and down in the vertical direction, and remain electromagnetically coupled at all times so as to continuously supply power to a load in an air conditioner.

17. The electrical device of claim 11, wherein:

the first coil (10) of the wireless power supply device is arranged on the outer wall of the main machine shell (400) of the air conditioner, and the second coil (20) of the wireless power supply device is arranged on the inner wall of the sliding panel (300) of the air conditioner;