KR102347719B1 - lightweight wireless charging system - Google Patents

Abstract

The present invention relates to a technology that enables wireless charging even when an RX PAD is lightweight in wireless charging between a TX PAD and the RX PAD, in which an RX coil member of the RX PAD generates an induced current while a magnetic material required for the RX PAD is disposed on the TX PAD. In particular, when a flying object such as a drone is equipped with the RX PAD for wireless charging, the RX PAD enables the drone to be wirelessly charged while the magnetic material required for wireless charging is disposed on the TX PAD. According to the present invention, a wireless charging station device includes a TX coil member, a first magnetic core member, and a second magnetic core member, so that even when a lightweight RX coil member without a magnetic material is adopted in a wireless charging movable device, conventional wireless charging efficiency between the TX PAD and the RX PAD is maintained.

Description

Lightweight wireless charging system {lightweight wireless charging system}

The present invention relates to a technology that enables wireless charging even when the RX PAD is configured to be lightweight in wireless charging between the TX PAD and the RX PAD.

More specifically, the present invention is a technology for allowing the RX coil member of the RX PAD to generate an induced current while the magnetic material required for the RX PAD is placed in the TX PAD.

In particular, when a flying object such as a so-called drone is equipped with an RX PAD for wireless charging, the RX PAD is a technology that enables the drone to wirelessly charge while the magnetic material required for wireless charging is placed in the TX PAD.

[FIG. 1] is an exemplary diagram conceptually illustrating a general wireless charging device. Referring to [Fig. 1], when a current flows through the TX coil 11, which is a component of the TX PAD, magnetic flux may be generated in the TX magnetic core 12 disposed close to the TX coil 11. 1 condition is provided.

And, when the RX magnetic cores 22 facing each other are disposed at a predetermined distance apart from the TX magnetic core 12 as in [FIG. 1], by the current of the TX coil 11, as in [FIG. 1] A second condition for generating a magnetic flux of a closed loop pattern is also provided.

As such, in order to transmit wireless power from the TX PAD to the RX PAD, the TX PAD and the RX PAD must each be provided with a magnetic magnetic core.

However, in order for a flying object such as a drone to be charged wirelessly through a charging station, the RX PAD must be installed on the drone.

As a result, for example, in the case of a drone, when an RX PAD is mounted as a wireless charging device in the prior art, there has been a problem in that the flight time is reduced by about 50% or more due to the increase in the weight of the RX PAD.

Here, as a wireless charging device, what is mounted on the RX PAD is the RX coil 21, RX magnetic core 22, and RX magnetic shield panel 23 as in [Fig. 1]. 23) and the RX magnetic core 22, which is a magnetic material made of ferrite, has a problem in that most of the load of the RX PAD is taken up.

On the other hand, the TX magnetic shielding panel 13 and the RX magnetic shielding panel 23 are generally made of aluminum and serve to shield the magnetic force generated between the TX PAD and the RX PAD, but heat generated between the TX PAD and the RX PAD emits

Accordingly, by placing the RX magnetic core and RX magnetic shielding panel provided in the conventional RX PAD on the TX PAD and adopting only a lightweight RX coil for the RX PAD, wireless charging as an improved RX PAD is possible. It is required to implement technology that can solve the problems of

The present invention has been proposed in view of the above, and an object of the present invention is to provide a lightweight wireless charging system that can implement a lightweight RX PAD wirelessly supplied with power for charging.

In addition, an object of the present invention is to provide a lightweight wireless charging system capable of maintaining the wireless charging efficiency between the existing TX PAD and the RX PAD despite the adoption of the lightweight RX PAD.

In order to achieve the above object, the lightweight wireless charging system according to the present invention is disposed close to the TX coil member 110 and one surface thereof is placed in contact with the TX coil member to generate a magnetic flux by the current flowing in the TX coil member. The first magnetic core member 120 and the second magnetic core member 130 facing the first magnetic core member and spaced apart from each other by a predetermined distance to form a magnetic flux together with the first magnetic core member in a closed loop pattern (description of meaning) ) and a wireless charging station device 100 having a TX coil member, a first magnetic core member, and a station base member 140 supporting the second magnetic core member; Current induced by magnetic flux in a state in which it enters and exits close to the second magnetic core member so that it can be disposed in proximity to one surface of the second magnetic core member facing the first magnetic core member and is disposed close to one surface of the second magnetic core member A wireless charging mobile device 200 having a RX coil member (210, 210') for generating; may be configured to include.

Here, the RX coil member 210 may preferably be configured to abut against one surface of the second magnetic core member in the process of generating an induced current by magnetic flux.

Meanwhile, according to the first embodiment of the present invention, the RX coil member 210 may include an RX coil unit and a coil packaging unit for containing the RX coil unit inside the RX coil unit.

At this time, the RX coil member 210 may be disposed so that the coil packaging unit is erected vertically from the bottom of the wireless charging mobile device.

Here, the wireless charging mobile device 200, in a state in which the RX coil member is erected in the vertical direction, is connected to the upper portion of the RX coil member, and the coil grip member 220 grips the RX coil member; may further include.

Here, the TX coil member 110 , the first magnetic core member 120 , and the second magnetic core member 130 may be configured to enable linear motion in the vertical direction with respect to the station base member.

On the other hand, according to the second embodiment of the present invention, the RX coil member 210 ′ may include an RX coil unit and a coil packaging unit for storing the RX coil unit inside the RX coil unit.

In this case, the RX coil member 210 ′ may be disposed so that the coil packaging unit is horizontal under the wireless charging device.

Here, the wireless charging mobile device 200 includes a first coil grip member 231 connecting one end of the RX coil member and the lower part of the wireless charging mobile device in a state in which the RX coil member is horizontally disposed; A second coil grip member 232 connecting the other end of the RX coil member and the lower portion of the wireless charging mobile device in a state in which the RX coil member is horizontally disposed; may further include.

Here, the TX coil member 110 , the first magnetic core member 120 , and the second magnetic core member 130 may be configured to enable linear motion in the horizontal direction with respect to the station base member.

On the other hand, the present invention is a wireless charging mobile device 200 in a state of being seated on the station base member so that the RX coil members 210 and 210 ' can enter and exit between the first magnetic core member and the second magnetic core member. It may be configured to further include; an alignment member for adjusting.

The present invention is a wireless charging mobile device that is provided with a TX coil member, a first magnetic core member, and a second magnetic core member in the wireless charging station device, and wirelessly receives power for charging as the RX coil member is provided in the wireless charging mobile device. It shows the advantage that it can be implemented in a light weight.

In addition, the present invention includes a TX coil member, a first magnetic core member, and a second magnetic core member in the wireless charging station device, so a lightweight RX coil member excluding a magnetic material is adopted in the wireless charging mobile device. It shows the advantage of maintaining the wireless charging efficiency between the PAD and the RX PAD as it is.

[Figure 1] is an exemplary diagram conceptually showing a general wireless charging device,
[Figure 2] is an exemplary diagram schematically showing a lightweight wireless charging system according to a first embodiment of the present invention;
[FIG. 3] shows the TX coil member, the first magnetic core member, the first magnetic shielding panel member, the second magnetic core member, and the second magnetic shielding panel member in [FIG. 2] linearly moving upward from the station base member. An example showing the state,
[FIG. 4] is an exemplary view showing a state in which [FIG. 2] is employed in a drone,
[FIG. 5] is a view looking at [FIG. 4] from above,
[FIG. 6] is a view showing the process of aligning the drone by some of the aligning members operating in [FIG. 5];
[Fig. 7] is a view showing the state in which the alignment of the drone is terminated by operating the remaining aligning members in [Fig. 6];
[FIG. 8] is a view looking at the state of [FIG. 7] from the direction of [FIG. 4],
[FIG. 9] shows that the TX coil member, the first magnetic core member, the first magnetic shielding panel member, the second magnetic core member, and the second magnetic shielding panel member in [FIG. 8] are linearly moved up and down from the station base member. An example showing the state,
[Fig. 10] is an exemplary view schematically showing a lightweight wireless charging system according to a second embodiment of the present invention;
[FIG. 11] shows that the TX coil member, the first magnetic core member, the first magnetic shielding panel member, the second magnetic core member, and the second magnetic shielding panel member in [FIG. 10] are linearly moved in the horizontal direction from the station base member. It is an example diagram showing the state.

Hereinafter, the present invention will be described in detail with reference to the drawings.

[FIG. 2] is an exemplary view schematically showing a lightweight wireless charging system according to a first embodiment of the present invention, and [FIG. 3] is a TX coil member, a first magnetic core member, and a first magnetic shielding in [FIG. 2] It is an exemplary view showing the state in which the panel member, the second magnetic core member, and the second magnetic shielding panel member move upward from the station base member in a straight line, and [Figure 4] shows the state in which [Figure 2] is employed in the drone. It is an exemplary view, [Fig. 5] is a view of [Fig. 4] viewed from above, [Fig. 6] is a view showing the process of aligning the drone by operating some of the alignment members in [Fig. 5], [Fig. 7] is a view showing the state in which the alignment of the drone is finished by the remaining aligning members operating in [Fig. 6], and [Fig. 8] is a view of the state of [Fig. 7] from the direction of [Fig. 4] This view, [Fig. 9] is the TX coil member, the first magnetic core member, the first magnetic shielding panel member, the second magnetic core member, and the second magnetic shielding panel member in [Fig. 8] in the vertical direction from the station base member It is an example diagram showing the state of linear motion.

Referring to [Fig. 2] and [Fig. 3], the lightweight wireless charging system according to the present invention can receive power for charging from the wireless charging station device 100 and the wireless charging station device 100 that are arranged in a fixed type. It may be configured to include a wireless charging mobile device 200 capable of movement.

Here, the weight of the wireless charging station device 100 is not an important issue because the wireless charging station device 100 is arranged in a fixed type, but the wireless charging mobile device 200 can fly, for example, like a drone with a rechargeable battery mounted on it, so its weight weight becomes a very important issue.

The present invention generates an induced current in the wireless charging station device 100 through a magnetic flux in the form of a closed loop (eg, continuous flux) formed between the wireless charging station device 100 and the wireless charging mobile device 200, but the magnetic The first and second magnetic core members 120 and 130 of a heavy load for generating a flux are disposed as a pair in the wireless charging station device 100 as in [Fig. 2] and [Fig. 3], and the wireless charging moving device ( 200) by mounting the lightweight RX coil members 210 and 210', the weight of the wireless charging mobile device 200 can be significantly reduced.

To this end, the wireless charging station device 100 is a TX coil member 110, a first magnetic core member 120, a second magnetic core member 130, a station base, as in [FIG. 2] and [FIG. 3]. A member 140 may be provided.

Here, when power is supplied to the TX coil member 110, the first magnetic core member 120 and the second magnetic core member 130 disposed to face each other and spaced apart from each other by a predetermined distance form a magnetic flux in a closed loop form.

At this time, when the RX coil members 210 and 210 ′ are positioned in the space between the TX coil member 110 and the second magnetic core member 130 , the RX coil member 210 , 210 ′ has a magnetic closed loop type. An induced current can be generated by the flux.

By the way, since the RX coil members (210, 210') are mounted on the wireless charging mobile device 200, the wireless charging mobile device 200 moves downward from the top of the wireless charging station device 100 on [FIG. 3]. Accordingly, the RX coil members 210 and 210 ′ may be positioned in the space between the TX coil member 110 and the second magnetic core member 130 as shown in FIG. 3 .

To this end, the station base member 140 includes a TX coil member 110, a first magnetic core member 120, a first magnetic shielding panel member 121, and a second The magnetic core member 130 and the second magnetic shielding panel member 131 may be integrally supported.

In addition, the station base member 140 includes the TX coil member 110, the first magnetic core member 120, the first magnetic shielding panel member 121, and the second magnetic core member 130 as in [Fig. 2]. , the second magnetic shielding panel member 131 is brought in and out of itself, and as shown in [FIG. 3], the TX coil member 110, the first magnetic core member 120, and the first magnetic shielding panel member 121. , the second magnetic core member 130 and the second magnetic shielding panel member 131 may be moved upwardly.

Here, the first magnetic shielding panel member 121 and the second magnetic shielding panel member 131 are arranged as in [Fig. 2] and [Fig. 3] with the first magnetic core member 120 and the second magnetic It is possible to block the magnetic flux in the closed loop form formed by the core member 130 from being exposed to the outside in [ Figs. 2 ] and [ Figs. 3 ].

In addition, the first magnetic shielding panel member 121 and the second magnetic shielding panel member 131 may be preferably made of an aluminum material to dissipate heat generated in the wireless charging station device 100 to the outside.

Meanwhile, the present invention may be configured to further include the alignment members 151 , 152 , 153 and 154 as shown in FIGS. 5 to 7 .

A plurality of alignment members 151 , 152 , 153 , and 154 may be preferably mounted on the station base member 140 as shown in FIGS. 5 to 7 .

A plurality of alignment members 151, 152, 153, and 154 are mounted on the station base member 140 as in [Figs. When 200) is seated, the wireless charging device 200 can be moved horizontally by pushing it to a desired position.

As a result, the RX coil member 210 provided in the wireless charging mobile device 200 is between the first magnetic core member 120 and the second magnetic core member 130 in [FIG. 8] and [FIG. 9] and can be located together.

At this time, the TX coil member 110 , the first magnetic core member 120 , the first magnetic shielding panel member 121 , the second magnetic core member 130 , and the second magnetic shielding member disposed on the station base member 140 . The panel member 131 is moved vertically upward as shown in FIG. 9 integrally.

On the other hand, the wireless charging mobile device 200 may be provided with a lightweight RX coil member 210 as in [Fig. 2] and [Fig. 3].

At this time, the RX coil member 210 is the second magnetic core member 130 so that it can be disposed close to one surface of the second magnetic core member 130 facing the first magnetic core member 120 as shown in FIG. 3 . ) close to the entrance.

In addition, the RX coil member 210 generates an induced current by magnetic flux in a state in which it is disposed close to one surface of the second magnetic core member 130 .

Preferably, the RX coil member 210 may be configured to abut against one surface of the second magnetic core member 130 as shown in FIG. 3 in the process of generating an induced current by magnetic flux.

According to the first embodiment of the present invention, the RX coil member 210 may include an RX coil unit (not shown) and a coil packaging unit (not shown) for storing the RX coil unit inside itself. have.

Here, the coil packaging unit may be manufactured in the form of a panel made of a light material. As a result, the RX coil member 210 is erected in the form of a panel at the bottom of the wireless charging mobile device 200 as in [Figs. 2] to [Fig. 4] and [Fig. 8] to [Fig. can be

At this time, the wireless charging mobile device 200 may preferably further include a coil grip member 220, the coil grip member 220 is [Fig. 2] to [Fig. 4] and [Fig. 8] to [Fig. 9], in a state in which the RX coil member 210 is erected in the vertical direction, the RX coil member 210 is gripped while connected to the upper portion of the RX coil member 210 .

And, as the coil grip member 220 is preferably made of a synthetic resin of a light material, it is possible to minimize an increase in the overall weight of the wireless charging mobile device 200 .

Here, the TX coil member 110, the first magnetic core member 120, the first magnetic shielding panel member 121, the second magnetic core member 130, and the second magnetic shielding panel member 131 are the station base member. It is possible to move integrally with reference to 140, and linear motion in the vertical direction is possible based on the station base member 140 as in [Figs. 2] to [Fig. 4] and [Fig. 8] to [Fig. 9] can be configured to

[FIG. 10] is an exemplary view schematically showing a lightweight wireless charging system according to a second embodiment of the present invention, and [FIG. 11] is a TX coil member, a first magnetic core member, and a first magnetic shielding in [FIG. It is an exemplary view showing a state in which the panel member, the second magnetic core member, and the second magnetic shielding panel member move linearly in the horizontal direction from the station base member.

According to the second embodiment of the present invention, the RX coil member 210 ′ may include an RX coil unit (not shown) and a coil packaging unit (not shown) for storing the RX coil unit inside itself.

Here, the coil packaging unit may be manufactured in the form of a panel made of a light material. As a result, the RX coil member 210' may be horizontally arranged in the form of a panel in the lower part of the wireless charging mobile device 200 as in [Fig. 10] and [Fig. 11].

In this case, the wireless charging mobile device 200 may further include a first coil grip member 231 and a second coil grip member 232 as shown in FIGS. 10 and 11 .

The first coil grip member 231 includes one end of the RX coil member 210' and the wireless charging moving device ( 200) may be configured to connect the lower part.

The second coil grip member 232 is also the other end of the RX coil member 210' and the wireless charging moving device ( 200) may be configured to connect the lower part.

In addition, since the first coil grip member 231 and the second coil grip member 232 are preferably made of a lightweight synthetic resin, it is possible to minimize an increase in the overall weight of the wireless charging mobile device 200 . .

Here, the TX coil member 110, the first magnetic core member 120, the first magnetic shielding panel member 121, the second magnetic core member 130, and the second magnetic shielding panel member 131 are the station base member. It can be integrally moved with reference to 140 and can be configured such that linear motion in the horizontal direction is possible with respect to the station base member 140 as shown in FIGS. 10 and 11 .

11: TX coil
12: TX magnetic core
13: TX magnetic shielding panel
21: RX coil
22 : RX Magnetic Core
23: RX magnetic shielding panel
100: wireless charging station device
110: TX coil member
120: first magnetic core member
121: first magnetic shielding panel member
130: second magnetic core member
131: second magnetic shielding panel member
140: station base member
200: wireless charging mobile device
210, 210': RX coil member
220: coil grip member
231: first coil grip member
232: second coil grip member
240: mobile base member

Claims (5)

The wireless charging station device 100 is arranged in a fixed type;
a wireless charging mobile device 200 that is formed to be movable and receives power wirelessly from the wireless charging station device;
an alignment member for adjusting a position of the wireless charging mobile device with respect to the wireless charging station device;
consists of,
The wireless charging station device 100,
station base member 140;
a TX coil member (110) which is vertically erected inside the station base member and moves in and out of the station base member while linearly moving in the vertical direction;
Inside the station base member, one side of the station base member is placed upright in close proximity to the TX coil member, and a magnetic flux is generated by the current flowing in the TX coil member, and a straight line in the vertical direction together with the TX coil member. a first magnetic core member 120 for moving in and out of the station base member;
The station base member faces the first magnetic core member from the inside of the station base member and is vertically spaced apart from each other, the magnetic flux is formed together with the first magnetic core member in a closed loop pattern, and the first magnetic core member a second magnetic core member 130 that moves in and out of the station base member while linearly moving in the vertical direction together with;
is provided,
The wireless charging mobile device 200,
a movable base member 240;
It has an RX coil unit and a panel-shaped coil packaging unit for accommodating the RX coil unit inside, and may be disposed adjacent to one surface of the second magnetic core member facing the first magnetic core member according to the movement of the movable body base member an RX coil member 210 for generating an induced current by the magnetic flux in a state in which the movable body base member is placed upright under the base member and disposed close to one surface of the second magnetic core member;
a coil grip member 220 connecting a lower portion of the movable body base member and the RX coil member;
to provide
The alignment member is the RX coil member 210 to the wireless charging moving device 200 in a state seated on the station base member so that the RX coil member 210 can be entered and exited between the first magnetic core member and the second magnetic core member. Lightweight wireless charging system, characterized in that it is configured to allow for position adjustment.
The wireless charging station device 100 is arranged in a fixed type;
a wireless charging mobile device 200 that is formed to be movable and receives power wirelessly from the wireless charging station device;
an alignment member for adjusting a position of the wireless charging mobile device with respect to the wireless charging station device;
consists of,
The wireless charging station device 100,
station base member 140;
a TX coil member 110 disposed in a horizontal direction inside the station base member and moving in and out of the station base member while linearly moving in the horizontal direction;
Inside the station base member, one surface thereof is arranged in a horizontal direction to be close to contact with the TX coil member, a magnetic flux is generated by the current flowing in the TX coil member, and linear motion in the horizontal direction together with the TX coil member a first magnetic core member 120 that enters and exits the inside and outside of the station base member;
The station base member faces the first magnetic core member and is horizontally disposed to be spaced apart by a predetermined distance, the magnetic flux is formed together with the first magnetic core member in a closed loop pattern, and the first magnetic core member and a second magnetic core member 130 that moves in and out of the station base member while linearly moving in the horizontal direction together;
is provided,
The wireless charging mobile device 200,
a movable base member 240;
It has an RX coil unit and a panel-shaped coil packaging unit for accommodating the RX coil unit inside, and may be disposed adjacent to one surface of the second magnetic core member facing the first magnetic core member according to the movement of the movable body base member an RX coil member 210' disposed in a horizontal direction under the movable base member so as to generate an induced current by the magnetic flux in a state in which it is disposed close to one surface of the second magnetic core member;
a first coil grip member 231 connecting a lower portion of the movable body base member and one end of the RX coil member 210';
a second coil grip member 232 connecting a lower portion of the movable body base member and the other end of the RX coil member 210';
to provide
The alignment member is the RX coil member 210 to the wireless charging moving device 200 in a state seated on the station base member so that the RX coil member 210 can be entered and exited between the first magnetic core member and the second magnetic core member. Lightweight wireless charging system, characterized in that it is configured to allow for position adjustment.
The method according to claim 1 or 2,
The lightweight wireless charging system, characterized in that the RX coil member is configured to abut against one surface of the second magnetic core member in the process of generating an induced current by the magnetic flux. delete delete

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