KR101384691B1 - Slim type pickup for vehicle - Google Patents

Abstract

One embodiment of the present invention relates to a slim collection pickup. One embodiment of the present invention provides the slim pickup which includes: a core which includes a first post, a second post, and a connection part which connects the upper ends of the first post and the second post and includes a recess structure in the center thereof; and a coil which is wound around the core to surround the core. [Reference numerals] (AA) Magnetic field 1; (BB) Magnetic field 2

Description

Slim Pickup for Electric Vehicles {Slim Type Pickup for vehicle}

One embodiment of the present invention relates to a slim pickup. More particularly, the present invention relates to a slim current pickup that receives a magnetic flux formed by a non-contact magnetic induction charging method from a power supply means in an electric vehicle current collector.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

As an alternative to preventing pollution and reducing dependence on petroleum energy, hybrid vehicles using a combination of electric and internal combustion engines and electric vehicles driven only by electricity have been developed.

However, electric vehicles and hybrid vehicles developed to date have a disadvantage in that the distance that can be driven by only one charge is very limited. Recently, an electric vehicle of a self-induction charging method has been highlighted as an alternative to an electric vehicle using a battery.

Self-induction charging type electric vehicle is essentially required a feeder for supplying electricity. In order to charge the electric vehicle required for driving in this manner, it is only necessary to drive on a feeder. That is, when the electric vehicle is supplied with high frequency power to the feeder while traveling on the feeder, the electric vehicle is supplied with the electric power necessary for driving by the principle of magnetic induction between the feeder and the current collector installed in the electric vehicle.

The current collector is a device that absorbs a source current and converts it into a DC current so as to be convenient to drive an electric vehicle. The current collector generally includes a current pick-up that is mounted under the vehicle and is powered in a non-contact manner from a feed line installed on the road.

The current pick-up pick-up structure generally consists of a core and a coil wound around the core.

1 is a diagram illustrating a conventional current collector pickup 10. Referring to FIG. 1, the core includes a first post 11, a second post 12, and a connection 13 connecting the first post 11 and the second post 12. However, the conventional current collector pickup 10 has a disadvantage in that the volume of the current collector pickup 10 is large due to the coil wound around the core. In particular, when the volume of the current pick-up pickup 10 becomes large, it occupies a lot of space installed in the electric vehicle, so that the riding space or cargo loading space inside the vehicle becomes smaller.

In order to solve the above problems, it is necessary to reduce the size of the current collector pickup, and for this purpose, it is necessary to change the shape of the core.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

One embodiment of the present invention has a first post and the second post, the core having a connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure; And a coil wound around the core.

Another embodiment of the present invention has a first side and a second side, the core having a connecting portion connecting the upper edge of the first side and the second side, the central portion of the connecting portion has a recessed structure; And a coil wound around the core.

Yet another embodiment of the present invention includes a shaft; And a first protrusion protruding upward on one side of the shaft portion and a second protrusion protruding upward on the other side of the shaft portion, wherein the first protrusion has a first post that stands upright, and the second protrusion Provides a magnetic core structure for use in current pick-up, characterized in that it has a second post upright.

Another embodiment of the present invention has a first post and a second post, and has a connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure, the first post And a core of the second post protruding from the bottom of the recessed structure. And a slim pickup having a coil wound around the core.

Another embodiment of the present invention is a core having a first post and a second post, the connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure and A current collector comprising a slim pickup having a coil wound around the core; And a feeding core positioned below and having a third post and a fifth post, and having a connecting portion connecting the lower end of the third post and the fifth post, and having a fourth post standing upright in the center of the connecting portion. A feeder device comprising a feeder coil wound around the connection portion between the third post and the fourth post and between the fourth post and the fifth post, the feeder being self-coupled with the current collector. to provide.

Another embodiment of the present invention is located on the upper side, having a first post and a second post, and having a connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure And a slim pickup having a coil wound around the core. And

A feeding core positioned below and having a third post and a fifth post, and having a connection portion connecting the lower end of the third post and the fifth post; And a feeder coil wound around a central portion of the connection unit, the feeder including a feeder device magnetically coupled to the current collector.

One embodiment of the present invention has the effect of reducing the size of the current collector pickup by the volume occupied by the coil by changing the shape of the core of the current collector pickup. In addition, by reducing the size of the current pick-up pickup, it is possible to reduce the installation space of the current collector in the vehicle, thereby ensuring the available space inside the vehicle.

1 is a diagram illustrating a conventional current pickup pickup.
2 is a view showing a slim pickup according to the first embodiment of the present invention.
3 is a diagram illustrating a plurality of cores having the shape of FIG. 2 arranged at intervals along a first direction.
It is a figure which shows the case where the coil of flat plate shape is wound around the core of FIG.
FIG. 5 is a view showing a state in which a flat coil is wound when a plurality of cores of FIG. 2 are arranged.
FIG. 6 is a diagram illustrating a form without a fourth post in the core of the power feeding device of FIG. 2.
FIG. 7 is a diagram illustrating a case where the coil of the slim pickup of FIG. 6 is a flat coil.
8 is a view showing a slim pickup according to a second embodiment of the present invention.
9 is a view showing a magnetic core structure according to the present invention.

With reference to the accompanying drawings will be described in detail a slim pickup 20 according to embodiments of the present invention. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention, and are actually shown in a smaller scale than the actual dimensions in order to understand the schematic configuration.

In addition, terms such as first and second may be used to describe various components, but the components herein should not be limited by terms such as first and second. Terms such as first and second are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

2 is a view showing a slim pickup 20 according to the first embodiment of the present invention. Referring to FIG. 2, the slim pickup 20 according to the first embodiment of the present invention has a first post 21 and a second post 22, and a first post 21 and a second post 22. It has a connecting portion 23 for connecting the top of, the central portion of the connecting portion 23 includes a core having a recessed structure and a coil 26 wound around the core.

Compared to the connection part 13 of the core in the conventional current collector pickup 10 shown in FIG. 1, it can be seen that the connection part 23 according to the present embodiment has a recessed structure.

The recessed structure of the center portion of the connecting portion 23 in the core is, according to the embodiment, four bent portions, that is, the first bent portion 24a, the second bent portion 24b, the third bent portion 24c and the fourth bent portion. It may include a portion 24d. In this case, the recessed structure may be a "c" shaped structure. In some embodiments, the recessed structure may have a curved shape having no bent portion (not shown).

The coil 26 may include a first coil 26a and a second coil 26b in the first embodiment. The coil 26 may be wound around the bottom 25 of the recessed structure in the core, where the bottom means between the second bent portion 24b and the third bent portion 24c.

The ends of the first post 21 and the second post 22 protrude more than the bottom 25 of the recessed structure. The length projecting from the bottom 25 is preferably similar to the coil diameter wound around the bottom 25 of the recessed structure of the connecting portion 23. That is, it is preferable that the length L of the post is similar to the difference d between the maximum height and the minimum height of the coil 26 wound on the bottom 25. However, the length L should be maintained to the extent that the magnetic field is smoothly formed. The shape of the core which facilitates the formation of the magnetic field will be described later.

The recessed structure of the connection part 23 narrows the height of the slim pickup 20 so that the slim pickup 20 becomes a slim shape, and when the current collector is installed in the lower portion of the vehicle, the vehicle does not occupy much space. More space available.

3 is a diagram illustrating a plurality of cores having the shape of FIG. 2 arranged at intervals along a first direction (X direction). 3 (a) shows a case where the first coil 26a and the second coil 26b are wound on the bottom 25 of the individual core, respectively. FIG. 3 (b) shows a case where the first coil 26a and the second coil 26b are wound around the whole of a plurality of cores arranged along the first direction (X direction). In this case, the first coil 26a and the second coil 26b may be wound around the bottom 25 of the recessed structure of the core.

Referring to FIG. 3, the slim pickup 20 may have a plurality of cores having a recessed structure. That is, the slim pickup 20 may have a structure in which a plurality of cores are arranged at intervals in a first direction (X direction), that is, in a rib shape. Here, the distance between the core and the core is preferably constant, but is not necessarily limited thereto. Having a rib-like structure in which a plurality of cores are arranged along the first direction (X direction) is economical because it saves the core material cost than spreading the plate-shaped core.

4 is a diagram illustrating a case in which the coil 40 having a plate shape is wound around the core of FIG. 2. Referring to FIG. 4, the plate-shaped coil 40 includes at least two or more metal plates 41 and a dielectric 42 interposed between the metal plates 41.

The advantage of using the flat coil 40, the longer the wire wound on the core, the inductance of the lead itself is increased, the impedance is increased, which leads to a loss of power. In order to prevent this, a plurality of capacitors may be separately installed to reduce the overall impedance of the wire. However, installing multiple capacitors separately increases the manufacturing cost. The flat coil 40 serves as a capacitor in the structure itself. Therefore, there is no need to install a separate capacitor, there is an effect that can solve the problem of excessive manufacturing cost.

FIG. 5 is a diagram illustrating a state in which a flat coil 40 is wound when a plurality of cores of FIG. 2 are arranged. Referring to FIG. 5, the flat coil 40 has an upper portion of the bottom portion 25 of the recessed structure of the core in a rib-like structure in which a plurality of cores are arranged in a first direction (X direction) according to an embodiment. It can be wound around the bottom and bottom.

The form in which the magnetic field is formed will be described. A magnetic field is a space in which a magnetic force acts around the magnetic pole or in the presence of a conductive wire. Ampere's right screw's law is to find the direction of the magnetic field caused by electric current. When a current flows in a circular coil in the direction of the screw turning, a magnetic field is generated in the direction that the screw travels.

Referring back to FIG. 2, the core of the power feeding device 30 is in a shape in which the letter “E” is laid and the vertical stroke touches the floor. The core of the slim pick-up 20 and the core of the power feeding device 30 have first, second, third, fourth and fifth posts 21, 22, 32, 33 and 34 upright.

When a magnetic field is generated in the power feeding device 30, a current is formed in the coil 26 of the slim pickup 20 by the magnetic induction action. At this time, a magnetic field is formed between the power supply device 30 and the current collector. The shape of the core is designed so that a magnetic field can be smoothly formed between the power feeding device 30 and the slim pickup 20. Posts 21, 22, 32, 33, and 34 of the core are also provided for smooth formation of the magnetic field.

In FIG. 2, the X indicates the direction of the current entering the ground, and the dot indicates the direction of the current exiting from the ground. In the power supply device 30, the power supply coil 31 may be composed of a first power supply coil 31a and a second power supply coil 31b, and the first power supply coil 31a may include a third post 32 of the power supply core. Towards the second feed coil 31b is wound around the fifth post 34 of the feed core. As the feed coil 31 is wound around the feed core, the magnetic field may be smoothly formed. When a current flows through the feed coil 31, a magnetic field 1 is formed in the first feed coil 31a and a magnetic field 2 is formed in the second feed coil 31b according to the law of the right screw of the ampere. Thus, the magnetic field 1 generates current in the first coil 26a and the magnetic field 2 in the second coil 26b, respectively. The directions of magnetic field 1 and magnetic field 2 are reversed. At this time, the posts of the power supply device 30 and the slim pickup 20 help the magnetic field to be formed smoothly.

In accordance with this, the length L of the first and second posts 21 and 22 is determined in a line that maintains the extent to which the magnetic flux can be smoothly formed. In the recessed structure, the height h of the bottom portion 25 is also located within the length L of the first and second posts 21 and 22.

Referring to FIG. 4 again, even when the flat coil 40 is wound, the magnetic field is caused by the direction of the current flowing through the first feed coil 31a and the second feed coil 31b of the feeder 30. Divided into three and four magnetic fields are formed in the opposite direction, the fourth post 33 provides the flux path of the magnetic field 3 and the magnetic field 4.

FIG. 6 is a diagram illustrating a form in which the fourth post 33 is omitted in the core of the power supply device 30 of FIG. 2. 6 shows another embodiment in which a magnetic field is formed between the power supply device 30 and the slim pickup 20. Referring to FIG. 6, in the power feeding device 30, a single feed coil 35 is wound around the center of the core, and the magnetic field is rotated counterclockwise with respect to the direction of the current flowing through the coil by the right screw of ampere. 5 shows forming. In this case, a single coil 27 is also wound on the core of the slim pickup 20, and a current is formed in the coil 27 by magnetic induction.

FIG. 7 is a diagram illustrating a case where the coil of the slim pickup 20 of FIG. 6 is a flat coil 40. Referring to FIG. 7, the magnetic field 6 is formed in the counterclockwise direction as in the case of FIG. 6 even when the flat coil 40 is wound around the core.

8 is a view showing a slim pickup 50 according to a second embodiment of the present invention. Fig. 8 (a) shows a case where coils 51a and 51b made of conductive wire are wound around the core, and Fig. 8 (b) shows a case where flat coil 51c is wound around the core. Referring to FIG. 8, the slim pickup 50 according to the second embodiment of the present invention has a first side surface 52a and a second side surface 52b, and a first side surface 52a and a second side surface 52b. It has a connecting portion 53 for connecting the upper edge of the, the central portion of the connecting portion 53 may include a core having a recessed structure and coils wound around the core (51a, 51b, 51c). The connection part may be formed in the form of a surface.

In the core, the recessed structure of the center portion of the connecting portion 53 may be divided into four bent portions, that is, the first bent portion 54a, the second bent portion 54b, the third bent portion 54c and the fourth bent portion, depending on the embodiment. Section 54d. In this case, the recessed structure may be a structure in which a second stroke having a cross-section of the letter “C” faces the bottom. According to another embodiment, the cross section of the recessed structure may be a curved shape having no bent portion (not shown).

Referring to Fig. 8A, the coils 51a and 51b are formed at the bottom 55 of the recessed structure in the core (where the bottom means between the second bent portions 54b and 54c and the third bent portion). Can be wound up. Referring to FIG. 8B, the flat coil 51c may be wound around the upper and lower portions of the bottom portion 55.

The edges 56 of the first side surface 52a and the second side surface 52b protrude more than the bottom portion 55 of the recessed structure. The degree of protruding from the bottom portion 55 is preferably similar to the diameter of the coils 51a and 51b wound around the bottom portion 55 of the recessed structure of the connecting portion 53. That is, the heights of the first and second side surfaces 52a and 52b are preferably similar to the difference between the maximum height and the minimum height of the wound coil. However, the height of the magnetic field should be maintained smoothly. The shape of the core which facilitates the formation of the magnetic field has already been described.

9 is a view showing a magnetic core structure 60 which is an embodiment of the present invention. FIG. 9 (a) shows a case where the first and second protrusions 61 and 62 have a bent portion, and FIG. 9 (b) shows a case where the round shape is shown. Referring to FIG. 9, the magnetic core structure 60 used in the current collector pick-up as another embodiment of the present invention has a first protrusion 62 protruding upwardly (Y1 direction) to one side of the shaft portion 61 and the shaft portion 61. ) And a second protrusion 63 protruding upwardly (Y1 direction) on the other side of the shaft portion 61. The first protrusion 62 may include a first post 62a that stands upright, and the second protrusion 63 may include a second post 63a that stands upright. Ends of the first post 62a and the second post 63a preferably protrude from the shaft 61, but are not necessarily limited thereto. The shaft portion 61 may correspond to the above-described bottom portion 25 (see FIG. 2) according to an embodiment. In addition, the first protrusion 62 may have a shape in which one side of the shaft portion 61 is bent in the upward direction (Y1 direction) and again bent in the horizontal direction (Z direction) and then bent downwardly (Y2 direction). (FIG. 9A). Similar to the first protrusion 62, the second protrusion 63 is also bent in the upward direction (Y1 direction) and then bent in the horizontal direction (Z direction), and then again downward (Y2 direction). It may be a bent shape (see FIG. 9A).

According to another embodiment, the first and second protrusions 62 and 63 may have a round shape having no bent portion (see FIG. 9B).

Referring again to FIG. 2, another embodiment of the present invention provides a current collector including the slim pickup 20 according to the first and second embodiments. That is, the current collector according to the present invention has a first post 21 and a second post 22 according to the embodiment, the connecting portion 23 connecting the upper end of the first post 21 and the second post 22. The center of the connecting portion 23 has a recessed structure, and the ends of the first post 21 and the second post 22 protrude more than the bottom of the recessed structure. And a slim pickup 20 having a coil 26 wound thereon.

Referring back to Figure 2, the present invention provides a power supply device as an embodiment. The power supply device is located on the upper side has a first post 21 and the second post 22, and has a connecting portion 23 for connecting the upper end of the first post 21 and the second post 22, the connection portion The central portion of may include a current collector including a core having a recessed structure and a slim pickup 20 having a coil 26 wound around the core.

And located on the lower side, having a third post 32 and the fifth post 34, and having a connecting portion for connecting the lower end of the third post 32 and the fifth post 34, the upright in the center of the connecting portion A feed core having a fourth post 33 and a feed coil wound around a connecting portion between the third post 32 and the fourth post 33 and between the fourth post 33 and the fifth post 34, respectively. 31) and a power feeding device 30 which is magnetically coupled with the current collector.

In this case, if the magnetic field formed between the current collector and the power feeding device is called a first magnetic field and a second magnetic field, the first magnetic field is sequentially along the fourth post 33, the first post 21, and the third post 32. The second magnetic field is formed along the fourth post 33, the second post 22, and the fifth post 34. The first magnetic field corresponds to magnetic field 1, and the second magnetic field corresponds to magnetic field 2.

Referring back to FIG. 6, according to the embodiment, the fourth post 33 (see FIG. 2) may be omitted in the center of the connecting unit 30. In this case, the power feeding device 30 is located below the current collector and has a third post 32 and a fifth post 34, and a connecting portion connecting the lower end of the third post 32 and the fifth post 34. A feed core 35 and a feed coil 35 wound around a central portion of the connection portion are provided, and are magnetically coupled to the current collector.

In this case, if the magnetic field formed between the current collector and the power feeding device 30 is called a third magnetic field, the third magnetic field is formed along the fifth post 34, the second post 22, and the first post 21 in turn. do. The third magnetic field corresponds to magnetic field 5.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: conventional current pick-up
20: Slim pickup according to the first embodiment of the present invention
30: power feeding device
26: Coil
31, 35: feeding coil
40: flat coil
50: slim pickup according to the second embodiment of the present invention
60: magnetic core structure

Claims (18)

A core having a first post and a second post and having a connection portion connecting the first post and the second post to an upper end thereof, wherein a central portion of the connection portion has a recessed structure; And
A coil wound around the core,
The core is a slim pickup, the plurality is arranged at intervals along the first direction. The method of claim 1,
The depression structure, the slim pickup, characterized in that it comprises four bent portions. The method of claim 1,
The recessed structure is a slim pickup, characterized in that the "c" shape. The method of claim 1,
Slim ends of the first post and the second post protrude more than the bottom of the recessed structure. delete The method of claim 1,
And the coil is wound around a bottom of the recessed structure. The method of claim 1,
The coil is a flat coil, the slim pickup, characterized in that wound in the bottom portion in the recessed structure. 8. The method of claim 7,
The flat coil has a slim pickup, characterized in that it comprises a two plates and a dielectric positioned between the two plates. A core having a first side and a second side and having a connecting portion connecting the first edge and the upper edge of the second side, the central portion of the connecting portion having a recessed structure; And
A coil wound around the core and wound around the bottom of the depression structure
Slim pickup that includes. 10. The method of claim 9,
The depression structure, the slim pickup, characterized in that it comprises four bent portions. 10. The method of claim 9,
The recessed structure is a slim pickup, characterized in that the cross-section """shaped. 10. The method of claim 9,
And lower edges of the first side and the second side protrude more than the bottom of the recessed structure. delete 10. The method of claim 9,
The coil is a flat coil, the slim pickup, characterized in that wound in the bottom of the recessed structure. Shaft; And
A first protrusion protruding upward on one side of the shaft portion and a second protrusion protruding upward on the other side of the shaft portion;
Including, The first protrusion has a first post upright, The second protrusion has a second post upright, A plurality of magnetic core structure arranged at intervals along the first direction
Slim pickup provided with. It has a first post and a second post, and has a connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure, the ends of the first post and the second post A core protruding from the bottom of the recessed structure; And a slim pickup having a coil wound around the core. It is located on the upper side and has a first post and a second post, and has a connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion has a recessed structure and arranged at intervals along the first direction A current collector comprising a plurality of cores and a slim pickup having a coil wound around the cores; And
A feeding core positioned below and having a third post and a fifth post, and having a connecting portion connecting the lower end of the third post and the fifth post, and having a fourth post standing upright in the center of the connecting portion; A power supply device including a power supply coil wound around the connection portion between the third post and the fourth post and between the fourth post and the fifth post, and magnetically coupled to the current collector;
Feeding device comprising a. Located in the upper side, and having a first post and a second post, the connecting portion connecting the upper end of the first post and the second post, the central portion of the connecting portion surrounds the core and the periphery of the core A current collector including a slim pickup having a coil wound around a bottom of the recessed structure; And
A feeding core positioned below and having a third post and a fifth post, and having a connection portion connecting the lower end of the third post and the fifth post; And a feeding coil wound around a central portion of the connecting portion, the feeding device being magnetically coupled to the current collector.
Feeding device comprising a.

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