JPH0529165A - Reactor exclusively designed for electric car - Google Patents

Abstract

PURPOSE:To provide an electric car reactor device capable of inhibiting the amount of leaking flux which spreads over the floor of an electric car without installing a magnetic shield board. CONSTITUTION:This device comprises a main reactor 4 and a flux cancel reactor 2. The flux cancel reactor 2 is laid out on the top the main reactor 4 in parallel with the main reactor 4 and electrically connected with the main reactor 4 in serial. The directions of the leakage flux of the both reactors are opposite to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle reactor device which is disposed under the floor of an electric vehicle.

[0002]

2. Description of the Related Art FIGS. 3 and 4 are partially broken side views and end views of a reactor device of this type, in which 4 is a reactor and 5 is a cooling air passage in the reactor 4. A spacer, 6 is an insulating block, 7 is an insulating bolt, 8 is a vehicle body mounting frame, 9 is a reactor cover, and has an opening 10. Reference numeral 11 is a mounting bolt for the cover 9. Reference numeral 12 indicates a lead-out terminal box, and 13 indicates the direction of cooling air.

FIG. 2 shows the magnetic flux generated when this reactor device is mounted on the floor of an electric vehicle and a current is passed through it. In the figure, 3 is the floor of the electric vehicle. When the current I flows through the reactor 4, magnetic flux Φ ₁ to magnetic flux Φ ₄ are generated, and the leak magnetic flux Φ ₄ intersects with the floor 3.

[0004]

As described above, the reactor 4 generates the leakage magnetic flux Φ ₄ that wraps around the floor 3 of the electric vehicle, but there is a regulation that the amount of magnetic flux on the floor is 10 gauss or less. Therefore, conventionally, a magnetic shield plate is provided between the reactor 4 and the floor 3 of the electric vehicle. Therefore, there is a problem that the reactor device is large and heavy, and is expensive.

The present invention has been made to solve this problem, and provides a reactor device for an electric vehicle capable of suppressing the magnetic flux sneaking into the floor of the electric vehicle below a prescribed value without providing a magnetic shield plate. The purpose is to

[0006]

In order to achieve the above-mentioned object, the present invention comprises a main reactor and a magnetic flux canceling reactor, and the magnetic flux canceling reactor is arranged above the main reactor in parallel with the main reactor. In addition, it is electrically connected in series with the main reactor, and the directions of the leakage magnetic fluxes of both reactors are opposite to each other.

[0007]

In the present invention, of the magnetic flux generated by the main reactor,
The leakage magnetic flux that goes around on the floor of the electric vehicle can be canceled by the magnetic flux generated by the magnetic flux canceling reactor.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 2 denotes a small capacity reactor for canceling magnetic flux, which is a reactor (main reactor).
4 are arranged parallel to each other in the vertical direction, and are electrically connected in series with the reactor 4. Reactor 2 is wound so that the generated magnetic flux is in a direction to cancel the generated magnetic flux of reactor 4.

Therefore, when the current I flows through the reactors 4 and 2, the generated magnetic flux of the reactor 2 cancels out a part of the generated magnetic flux of the reactor 4, so that the reactor 2 is made to have an appropriate inductance. The generated magnetic flux of No. 4 and the magnetic flux flowing around to the floor 3 side are canceled out, and the entire magnetic flux distribution becomes as shown in FIG. here,

Magnetic flux generated by the reactor 4 Φ ₄ = Φ ₆ + Φ ₇
+ Φ ₈ + Φ ₉

Magnetic flux generated by the reactor 2 Φ ₂ = Φ ₈ + Φ ₁₀

If the inductance of the reactor 2 is set so that Φ ₉ and Φ ₁₀ are equal,
Apparently, there is no magnetic flux that goes around to the floor 3 side.

[0014]

As described above, according to the present invention, since the magnetic flux canceling reactor is used to eliminate the magnetic flux that wraps around the floor, it is smaller, lighter and cheaper than the conventional magnetic shield plate. be able to.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a circuit diagram of a conventional reactor device.

FIG. 3 is a partially cutaway side view of a conventional reactor device.

FIG. 4 is an end view of a conventional reactor device.

[Explanation of symbols]

 2 Counteracting reactor 3 Floor of electric vehicle 4 Main reactor

Claims (1)

Claims: 1. A main reactor and a magnetic flux canceling reactor, wherein the magnetic flux canceling reactor is arranged above the main reactor in parallel with the main reactor and electrically connected to the main reactor. A reactor device for an electric vehicle, which is in series with a reactor, wherein leakage flux directions of both reactors are opposite to each other.