KR20110072069A - Magnetic field shielding device for non-contact electromagnetic inductive charging electric vehicle - Google Patents

Abstract

PURPOSE: A magnetic field shielding apparatus for a non-contact electromagnetic inductive charging type electric vehicle is provided to secure stability by preventing collision or interference between a shielding member and an external object in a driving state of an electric vehicle. CONSTITUTION: An actuator(20) is installed at a vehicle body frame of an electric vehicle. A piston of the actuator is perpendicularly moved by air pressure or oil pressure. A shielding member(10) is movably connected to the piston of the actuator. The shielding member is formed by laminating a plurality of shielding plates. The shielding member is formed to shield the leakage of electromagnetic waves and magnetic field which are generated between a current collection unit and a feeding road of an electric vehicle.

Description

Magnetic field shielding device for non-contact electromagnetic inductive charging electric vehicle}

The present invention relates to an electric vehicle of the non-contact magnetic induction charging method, more specifically, is installed to be moved up and down on the side portion of the non-contact magnetic induction charging electric vehicle, the lower side of both sides of the vehicle in the process of charging the current collector Non-contact magnetic induction charging type electric vehicle that can prevent the leakage of electromagnetic waves and magnetic fields generated between the current collector and the power supply device to the outside, and to move upward to prevent collision or interference with external objects when driving It relates to a magnetic field shield.

In general, the current collector of a non-contact magnetic induction type electric vehicle applies a principle of a transistor that converts a force of a magnetic field generated in a feeder road into electrical energy. At this time, the magnetic field generated by the high-voltage current flowing in the feed road flows according to the law of the right-handed screw. Since the current collector installed in the lower part of the vehicle is in a flat plane parallel to the feed road, electromagnetic waves and The magnetic field leaks to the outside.

The leaked electromagnetic waves and magnetic fields not only have a detrimental effect on the health of passengers on the roadside, but also cause a problem that current collection efficiency is lowered due to the leaked magnetic fields.

The present invention is to solve the conventional problems as described above, the object of the present invention is to move to the lower side of both sides of the vehicle when the charge to the current collector is the electromagnetic wave and magnetic field generated between the current collector and the power supply device leak to the outside In addition to improving current collection efficiency, it minimizes the effects of electromagnetic waves and magnetic fields on people near the vehicle.Non-contact magnetic induction charging can move upwards to prevent collisions or interference with external objects when driving. It is to provide a magnetic field shielding device for an electric vehicle.

The present invention for achieving the above object is, in the electric vehicle of the non-contact magnetic induction charging system installed in the lower portion of the vehicle body is a current collector for generating organic power by the magnetic field of the power supply device embedded in the power supply road, Actuators respectively provided on both side body frames and having a piston that vertically moves up and down by pneumatic or hydraulic pressure; It is connected to the pistons of the respective actuators to move up and down, and a plurality of shielding plates made of a metal material is laminated to each other in a stacked structure, when moving to the lower side of the electric vehicle current collector to shield both sides of the current collector and the power supply It provides a magnetic field shielding device for an electric vehicle of a non-contact magnetic induction charging method comprising a shielding member for blocking the leakage of electromagnetic waves and magnetic fields generated between the road to the outside.

According to an aspect of the present invention, the magnetic field shielding device of the present invention may further include a buffer damper of a flexible material that is installed at the lower end of the shielding member to absorb the impact applied from the bottom.

Here, the buffer damper is preferably a structure in which a flexible resin material is covered on the surface of the 'U'-shaped metal sheet material.

According to another aspect of the present invention, the shielding device of the present invention may further comprise a reinforcing material coupled between each shielding plate of the shielding member.

According to the present invention, since the magnetic field and the electromagnetic wave generated between the power supply road and the current collector are shielded without leaking to the outside by the shielding member installed on the side frame of the electric vehicle so as to move up and down, the current collection efficiency due to the magnetic field leakage is reduced. In addition to this, the adverse effects on passengers located in the vicinity of the vehicle can be minimized, and the shielding member moves upward when driving, thereby minimizing collision and interference with the road or other objects on the road, thereby improving safety. There is this.

In addition, since the shielding member is made of a plurality of shielding plates made of a thin metal, it is possible to improve the electromagnetic and magnetic field shielding effect, there is also a light and easy installation.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the magnetic field shielding device for an electric vehicle of the non-contact magnetic induction charging method.

1 to 4b illustrate an embodiment of a magnetic field shield for an electric vehicle of a non-contact magnetic induction charging method according to the present invention.

First, referring to FIG. 1, a power feeding device including a ferrite core 2 and a primary coil 3 wound around the ferrite core 2 is embedded in a feed road 1, and the organic electromotive apparatus is disposed below the vehicle body of the electric vehicle. A current collector 5 for generating electric power is installed.

The current collector 5 generates organic power by a magnetic field generated by the power supply device while maintaining a predetermined distance from the power supply road 1 to supply power to a motor (not shown) or a storage battery (not shown) of the vehicle. do. Although not shown in the drawing, the current collector 5 has a structure in which a secondary coil is wound around a flat plate-like ferrite core.

1 and 2, an actuator 20 having a piston 21 vertically moved upward and downward by pneumatic or hydraulic pressure is installed on both side body frames 4 of the electric vehicle. The piston 21 of the actuator 20 is coupled to the shield member 10 for shielding the outer side portions of both sides of the current collector (5). Therefore, the shielding member 10 moves vertically together with the piston 21 of the actuator 20, and moves to both sides of the lower side of the vehicle by the action of the actuator 20 when the vehicle is stopped to charge the current collector. The electromagnetic wave and the magnetic field generated between the device 5 and the power feeding device are prevented from leaking to the outside, and when the vehicle is not charged, it moves upward to prevent collision or interference with external objects.

As shown in FIG. 3, the shielding member 10 has a structure in which shielding plates 11 made of a plurality of thin metal plates (three in this embodiment) having a magnetic field shielding function are stacked apart from each other. Here, the shielding plate 11 is made of a metal plate of the '' 'upper and lower ends bent at right angles, respectively, are coupled to each other by a fastening member such as a bolt or nut. When the shielding member 10 is made of a plurality of metal plates as described above, since the load is smaller than when the shielding member is manufactured by making one metal plate thick, the actuator 20 may have a smaller capacity. In addition to reducing the amount of electricity consumed by the vehicle, the electric and magnetic field shielding effects can be further improved.

In addition, it is preferable that a reinforcing material 40 for reinforcing the strength of the shielding plate 11 is provided between the shielding plates 11 of the shielding member 10. In this embodiment, the reinforcing material 40 is made of a metal plate bent in the '' 'like the shielding plate 11, but is not limited thereto and may be formed in various forms.

In addition, the lower end of the shielding member 10 is equipped with a damping damper 30 to prevent the shielding member 10 from hitting the road surface or an object on the road surface to be directly impacted. The damper damper 30 may be made of a resin material such as rubber that can absorb a shock while being instantaneously deformed when it collides with an external object. It may be made of a structure covered with a flexible resin material.

The shielding member 10 is installed on the outside of the front wheel 6 and the rear wheel 7 of the vehicle, the front wheel 6 and the rear wheel 7 does not touch when the direction of the front wheel 6 and the rear wheel 7 is switched. It is advisable to keep enough distance.

In addition, the front end and the rear end of the shield member 10 is preferably formed to be bent inward to the vehicle in order to further enhance the electromagnetic and magnetic field shielding effect.

In the non-contact magnetic induction charging type electric vehicle of the present invention configured as described above, the shield member 10 is lowered by the operation of the actuator 20 as shown in FIG. 4A while the vehicle is stopped and charging of the current collector is performed. By shielding the magnetic field and electromagnetic waves generated between the power supply road (1) and the current collector (5) to prevent leakage to the outside to prevent the deterioration of current collection efficiency due to magnetic field leakage, passengers waiting outside of the vehicle When the vehicle travels without charging, the shielding member 10 is raised by the action of the actuator 20, and collision with the object on the road surface or the road surface is minimized. Since it is prevented there is an advantage that can improve the safety while driving.

The foregoing embodiments are presented for purposes of illustration only for understanding of the present invention, and the present invention is not limited thereto, and various changes and implementations may be made within the scope of the appended claims.

1 is a cross-sectional view illustrating main parts of a non-contact magnetic induction charging type electric vehicle to which a magnetic shielding device according to an embodiment of the present invention is applied.

FIG. 2 is a perspective view illustrating a part of an electric vehicle of a non-contact magnetic induction charging method to which the magnetic field shield of FIG. 1 is applied.

3 is a perspective view of the magnetic field shield of FIG. 1.

4A and 4B are side views illustrating a state in which the magnetic field shield of FIG. 1 is moved to the lower side of the vehicle during charging, and a state in which the magnetic field shield is moved to the upper side of the vehicle during driving.

Explanation of symbols on the main parts of the drawings

1: feeding road 2: ferrite core

3: primary coil 4: lower frame

5: current collector 10: shielding member

11 shielding plate 20 actuator

21: piston 30: damping damper

40: reinforcement

Claims (5)

In a non-contact magnetic induction charging type electric vehicle provided with a current collecting device that generates organic power by the magnetic field of a power feeding device embedded in a power supply road, Actuators installed on both side vehicle body frames of the electric vehicle and having pistons vertically moved up and down by pneumatic or hydraulic pressure; It is connected to the pistons of the respective actuators to move up and down, and a plurality of shielding plates made of a metal material is laminated to each other in a stacked structure, when moving to the lower side of the electric vehicle current collector to shield both sides of the current collector and the power supply Magnetic field shielding device for an electric vehicle of a non-contact magnetic induction charging method comprising a shielding member for blocking the leakage of electromagnetic waves and magnetic fields generated between the road to the outside. The magnetic field shielding device for an electric vehicle of claim 1, further comprising a buffer damper made of a flexible material absorbing a shock applied from a lower portion of the shielding member. The magnetic field shielding device for a non-contact magnetic induction charging method according to claim 1, wherein the buffer damper has a structure in which a flexible resin material is covered on a surface of a 'U'-shaped metal sheet. The magnetic field shielding device of claim 1, further comprising a reinforcing material coupled between the shielding plates of the shielding member. The magnetic field shielding device for an electric vehicle of claim 1, wherein the front end portion or the rear end portion of the shielding member is bent inwardly.

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