JP3359372B2 - Generating coil and generating coil device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generating coil and a power generating coil device using the same. More specifically, the present invention relates to a power generation coil used for extracting an output voltage higher than an input voltage without changing the size of a transformer, and a power generation coil device using the same.

[0002]

2. Description of the Related Art Conventionally, a transformer is generally used to extract an output voltage higher than an input voltage.
Now, assuming that the number of turns of the primary coil of the transformer is N1, the number of turns of the secondary coil is N2, the input voltage (primary voltage) is E1, and the output voltage (secondary voltage) is E2, the input voltage E1 and the output voltage E2 are There is a relationship of E2 / E1 = N2 / N1.

[0003]

However, in order to obtain an output voltage higher than the input voltage using the conventional transformer, the value of N2 / N1 must be increased from the above equation. That is, the number of turns N2 of the secondary coil may be larger than the number of turns N1 of the primary coil.
In order to increase the size of the transformer, the leg core of the transformer must be increased, so that the entire transformer becomes large. Therefore, the larger the transformer, the larger the weight,
There has been a problem that handling and transportation are difficult, and the cost is high.

In view of the above circumstances, the present invention provides a power generating coil and a power generating coil device using the power generating coil, which do not require an increase in the size of the transformer when an output larger than an input is taken out using the transformer. The purpose is to do.

[0005]

Means for Solving the Problems A power generating coil according to the present invention comprises:
A transformer having an iron core, a primary coil and a secondary coil ;
And a pair of external magnets, the pair of external magnets,
The north pole of one external magnet and the south pole of another external magnet
Outside of both ends of the primary coil side leg of the iron core.
Respectively, and the pair of external magnets are generated between them.
The direction of the magnetic flux that flows through the core
The direction of the magnetic flux generated in the primary coil side leg
It is characterized by being arranged so that.

The power generating coil device according to the present invention is characterized in that the plurality of power generating coils are configured to be able to share an external magnet between power generating coils adjacent to each other.

Further, the power generating coil device according to the present invention comprises two or more transformers having a primary coil and a secondary coil, and
It has a horseshoe-shaped four or more even number of external magnets having a pole and an S pole, and each of the external magnets is a pair of two external magnets, the N pole of one external magnet and the S pole of the other external magnet. The direction of the magnetic flux generated by the primary current of the transformer is opposite to the direction of the magnetic flux generated in the primary coil side leg core by the primary current of the transformer, and each side surface of the pair of external magnets is Are arranged so as to be parallel to the side surface of the.

The external magnet according to the present invention refers to a permanent magnet or a superconductive magnet.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) A first embodiment is an embodiment corresponding to the first invention. FIG.
Indicates a power generating coil A according to an embodiment of the present invention. The power generation coil A includes a transformer 1 and an external magnet 2.

As shown in FIG. 1, a transformer 1 has a hollow rectangular parallelepiped iron core 11 and a primary coil wound around the iron core 11.
The iron core 11 has a length L. The primary coil side leg iron core 11a
The direction of the magnetic flux generated inside can be freely set according to the winding method of the primary coil 12, but in the present embodiment, when the switch S of FIG. 1 is turned on, the left direction (the direction of arrow a in FIG. 1)
The primary coil 12 is wound around the primary coil side leg core 11a so that a magnetic flux can be generated toward the primary coil.

The external magnet 2 is a permanent magnet formed so that the N and S poles can face each other. The distance between the N and S poles is equal to the length L of the leg of the iron core 11 of the transformer 1. And the same length. The direction of the magnetic flux generated from the N pole to the S pole by the N pole and the S pole of the external magnet 2 is changed by the primary current of the transformer 1 in the primary coil side leg core 11a. 1 (indicated by arrow a in FIG. 1) and the opposite direction (indicated by arrow b in FIG. 1), and the N and S poles are arranged in contact with both ends of the primary coil side leg core 11a. ing. In this embodiment, a permanent magnet is used as the external magnet 2 from the viewpoint of easy handling, but a superconductive magnet or the like may be used.

Next, a method of using the power generation coil A of the embodiment will be described. First, as shown in FIG. 2, when the switch S is turned on and a pulse voltage or a half-wave rectified voltage is applied to the primary coil 12, a primary current I1 flows through the primary coil 12, and the primary current I1 causes A magnetic flux P is generated in the direction indicated by the arrow x in FIG. The magnetic flux Q generated by the external magnet 2
Occurs in the direction of arrow y in FIG. Accordingly, only the magnetic flux P due to the primary current I1 is present in the primary coil side leg core 11a, whereas the magnetic flux P due to the primary current I1 and the magnetic flux P due to the external magnet 2 are present in the secondary coil side leg core 11b. Since a magnetic flux of (P + Q) in which Q is superimposed is generated, an electromotive force corresponding to the change of the magnetic flux of (P + Q) is induced in the secondary coil 13.

Since a magnetic flux of (P + Q) is generated in the iron core except the primary coil side leg core 11a, the magnetic flux passing through the iron core may be saturated in a range smaller than the magnetic flux (P + Q). The cross-sectional area of the iron core excluding the primary coil side leg core 11a is formed larger than the cross-sectional area of the primary coil side leg core 11a so as not to cause a problem.

Next, as shown in FIG. 1, when the switch S is turned off, the magnetic flux generated in the secondary coil side leg core 11b becomes zero, and the magnetic flux generated by the external magnet 2 is reduced to the primary coil side. Only the inside of the leg core 11a passes from the north pole to the south pole. That is, in the secondary coil side leg core 11b, the magnetic flux suddenly becomes zero from (P + Q) and a large magnetic flux change occurs, so that a large electromotive force corresponding to the magnetic flux change is intermittently applied to the secondary coil 13. Will be induced.

When the primary coil 12 is energized, the magnetic flux of the external magnet 2 does not pass through the primary coil side leg core 11a. When the energization of the primary coil 12 is stopped, the magnetic flux of the external magnet 2 is reduced. The primary coil 12 not only plays a role of inducing an electromotive force in the secondary coil 13 but also switches the direction of the magnetic flux of the external magnet 2 because it passes through the inside of the primary coil side leg core 11a. Also plays the role of. Therefore, it is desirable that the magnetic flux passing through the inside of the primary coil side leg core 11a be saturated when the primary coil 12 is energized. That is, when the magnetic flux of the primary coil side leg core 11a becomes saturated due to the energization of the primary coil 12, all the magnetic flux generated by the external magnet 2 passes through the secondary coil side leg core 11b. This is because the magnetic flux generated by the magnetic field can be effectively used.

When a half-wave rectified voltage is applied to the primary coil 12, the secondary coil 13 is turned on / off according to the winding method of the coil as shown in FIG.
Since the electromotive force having the waveform shown in (A) or (B) is induced, the electromotive force can be used as it is as the input voltage of the power generation coil A in the next stage.

As described above, if the power generating coil A is used, a large change in magnetic flux occurs in the secondary coil 13 only by applying a pulse voltage or a half-wave rectified voltage to the primary coil 12, so that the transformer Since a large output can be obtained without changing the size, the power generating coil A can be used in a wide range from home use to industrial use. .

(Second Embodiment) A second embodiment is an embodiment corresponding to the second invention. FIG.
1 shows a power generation coil device X according to the present invention. The power generating coil device X has four power generating coils A of the first embodiment.
It is configured by combining them. That is, the power generation coil device X is configured by combining the four power generation coils A so that the external magnets 2 can be shared between the power generation coils A adjacent to each other. In the present embodiment, the power generation coil device X is configured using four power generation coils A. However, the number of the power generation coils A to be used can be freely set according to the magnitude of the output voltage. it can.

When the power generation coil device X is actually used, the electromotive force induced in the secondary coil 13 of each power generation coil A is superposed, or the secondary coil of one power generation coil A is There is a method of sequentially using the electromotive force induced in 13 as an input voltage of another power generation coil A. For example, in the method of superimposing the electromotive force induced in the secondary coil 13 of each power generation coil A, by adjusting the phase of each induced electromotive force, the electromotive force as shown in FIG. 5A, it can be finally rectified and taken out as a DC voltage in the case of FIG. 5A, and as an AC voltage in the case of FIG. 5B.

As described above, if the power generating coil device X of this embodiment is used, a large output can be freely obtained without increasing the size of the transformer 1, so that it can be used in a wide range such as home use and industrial use. Can be used.

(Third Embodiment) The third embodiment is an embodiment corresponding to the third invention. FIG.
Indicates a power generating coil device Y according to an embodiment of the present invention. The generator coil device Y includes two transformers 3A, 3A.
B and four external magnets 4A, 4B, 4C, 4D.

As shown in FIG. 7, the transformer 3A comprises a hollow rectangular parallelepiped iron core 31, a primary coil 32 and a secondary coil 33 wound around the iron core 31, and a primary coil side leg. Protrusions 31c and 31d are formed at both ends of the iron core 31a, respectively. The protrusions 31c and 31d are formed by the core 31 of the transformer 3A and external magnets 4A and 4A to be described later.
This is because the magnetic fluxes generated by the external magnets 4A, 4B, 4C, and 4D pass through the core 31 as much as possible by increasing the contact areas of the magnetic poles B, 4C, and 4D with the magnetic pole surfaces.

The direction of the magnetic flux generated in the primary coil side leg core 31a can be freely set depending on the winding method of the primary coil 32. In the present embodiment, the direction of the magnetic flux generated in the leg core 31a is leftward ( A primary coil 32 is wound around the leg core 31a so that a magnetic flux can be generated in the direction of the arrow m in FIG. 7).

The transformer 3B has the same configuration as the transformer 3A, and the direction of the magnetic flux generated in the leg core 31a on the primary coil 32 side is the same as that of the transformer 3A. And
Transformers 3A and 3B are arranged in series.

The external magnets 4A, 4B, 4C and 4D are shown in FIG.
As shown in the figure, a horseshoe magnet having a north pole and a south pole,
The two external magnets 4A and 4B, 4C and 4D are configured to generate a magnetic flux as a pair. In addition,
In the present embodiment, the external magnets 4A,
Although a horseshoe magnet was used as 4B, 4C, and 4D, any magnet can be used without any particular limitation on the type of magnet.

The two external magnets 4A and 4B are
The N pole of A and the S pole of the external magnet 4B can generate a magnetic flux in the direction opposite to the direction of the magnetic flux generated in the primary coil side leg core 31a by the primary current of the transformer 3A. And the S pole of the external magnet 4A are arranged to generate a magnetic flux in the direction opposite to the direction of the magnetic flux generated in the primary coil side leg core 31a by the primary current of the transformer 3B. That is, each side surface of the external magnets 4A and 4B is arranged so as to be parallel to each side surface of the primary coil 32 of the transformers 3A and 3B, and the N pole surface and the S pole surface of the external magnet 4A are connected to the transformer 3A. Projection 31c and Projection 31 of Transformer 3B
Further, the S pole face and the N pole face of the external magnet 4B are disposed so as to contact the side faces of the projection 31d of the transformer 3A and the projection 31c of the transformer 3B, respectively.

The external magnets 4C and 4D are similarly arranged, and the external magnet 4A and the external magnet 4C face each other with the projection 31c of the transformer 3A and the projection 31d of the transformer 3B interposed therebetween. Projection 31d and the projection of the transformer 3B
The external magnet 4B and the external magnet 4D face each other with the 31c interposed therebetween.

Therefore, similarly to the case of the first embodiment, when a pulse voltage or a half-wave rectified voltage is applied to the primary coil 32 of the transformer 3A and the transformer 3B, the primary coil side of the transformer 3A and the transformer 3B In the core except for the leg core 31a, in addition to the magnetic flux generated by the primary coil 32,
Magnetic flux is generated from the N pole of the external magnet 4A to the S pole of the external magnet 4B via the projections 31c and 31d of the transformer 3A, and the magnetic flux is generated from the N pole of the external magnet 4C to the projections 31c and 31d of the transformer 3A. A magnetic flux is generated toward the S pole of the external magnet 4D via the external magnet 4D, and a magnetic flux is generated from the N pole of the external magnet 4B to the S pole of the external magnet 4A via the protrusions 31c and 31d of the transformer 3B. Magnetic flux is generated from the N pole of the magnet 4D to the S pole of the external magnet 4C via the protrusions 31c and 31d of the transformer 3B.

That is, in the power generating coil device Y of the present embodiment, since the magnetic flux changes twice as compared with the case where only one transformer is provided, the secondary coils 33 of the transformers 3A and 3B are provided with the same. An electromotive force corresponding to a change in magnetic flux is induced. The primary coils 32 of the transformers 3A and 3B
Does not only play a role of inducing an electromotive force in the secondary coil 33, but also have the external magnets 4A and 4B and the external magnets 4B.
The point which also plays the role of a switch for switching the direction of the magnetic flux generated by C and 4D is the same as in the first embodiment.

The magnetic pole surfaces of the external magnets 4A, 4B, 4C, 4D can be arranged so as to abut on the tips of the projections 31c, 31d of the transformers 3A, 3B. In order to generate the protrusions 31c, as in this embodiment,
It is preferable that the magnetic pole faces of the external magnets 4A, 4B, 4C, and 4D be arranged so as to contact the side surfaces of the 31d.

In this embodiment, permanent magnets are used as the external magnets 4A, 4B, 4C and 4D from the viewpoint of easy handling. However, superconducting magnets and the like can be used in the case of the first embodiment. Is the same as

Next, a power generation coil device Z according to another embodiment will be described. In the power generation coil device Y of the embodiment, the two transformers 3A and 3B are arranged in series, but they may be arranged in parallel. FIG. 8 shows a power generating coil device Z according to another embodiment of the present invention. This power generation coil device Z has two transformers 3A, 3B and four external magnets 4A, 4B, 4C, similarly to the power generation coil device Y.
4D, and the only difference is that the transformers 3A and 3B are arranged in parallel.

That is, each side surface of the external magnets 4A and 4B is arranged so as to be parallel to each side surface of the primary coil 32 of the transformers 3A and 3B, and the N pole surface and the S
The pole faces are on the upper surfaces of the protrusion 31c of the transformer 3A and the protrusion 31d of the transformer 3B.
The pole faces are arranged in contact with the upper surfaces of the projection 31d of the transformer 3A and the projection 31c of the transformer 3B, respectively.

The external magnets 4C and 4D are similarly arranged, and the external magnet 4A and the external magnet 4C face each other with the projection 31c of the transformer 3A and the projection 31d of the transformer 3B interposed therebetween. Projection 31d and the projection of the transformer 3B
The external magnet 4B and the external magnet 4D face each other with the 31c interposed therebetween.

Accordingly, when a pulse voltage or a half-wave rectified voltage is applied to the primary coil 32 of the transformer 3A and the transformer 3B, similarly to the power generating coil device Y, the primary coil side leg of the transformer 3A and the transformer 3B is applied. In the core except for the core 31a, in addition to the magnetic flux generated by the primary coil 32,
A magnetic flux is generated from the N pole of the external magnet 4A toward the S pole of the external magnet 4B via the projections 31c and 31d of the transformer 3A, and the magnetic flux is generated from the N pole of the external magnet 4B to the projections 31c and 31d of the transformer 3B. A magnetic flux is generated toward the S pole of the external magnet 4A via the external magnet 4A, and a magnetic flux is generated from the N pole of the external magnet 4C to the S pole of the external magnet 4D via the protrusions 31c and 31d of the transformer 3A. Magnetic flux is generated from the N pole of the magnet 4D to the S pole of the external magnet 4C via the protrusions 31c and 31d of the transformer 3B.

That is, the power generating coil device Z of the present embodiment operates in the same manner as the power generating coil device Y, and
Then, an electromotive force is induced in the secondary coil 33 of the transformer 3B. Only the overall shape is different.
Therefore, it is possible to use the power generating coil device X or the power generating coil device Y according to the space or the like where the power generating coil device is used.

As described above, in the power generation coil devices Y and Z of this embodiment, a large output can be easily obtained without increasing the size of the transformer. can do.

[0038]

According to the power generation coil of the present invention, by applying a voltage to the primary coil of the transformer, a high output is intermittently induced in the secondary coil, and the primary coil is
Since it also functions as a switch for switching the direction of the magnetic flux of the external magnet, the generated magnetic flux can be used effectively, so that a high output can be easily obtained without increasing the size of the transformer.

Further, in the power generating coil device of the present invention, a larger output can be obtained by combining a plurality of power generating coils or a plurality of external magnets without increasing the size of the transformer, as compared with a single power generating coil. So you can
It can be used in various fields such as home use and industrial use.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a power generating coil according to a first embodiment of the present invention.

FIG. 2 is an explanatory sectional view of an operation state of a power generation coil.

3A and 3B are a forward output waveform diagram (A) and a reverse output waveform diagram (B) of a power generation coil.

FIG. 4 is a sectional view of a power generating coil device according to a second embodiment of the present invention.

FIG. 5 is a DC output waveform diagram (A) and an AC output waveform diagram (B) of the power generation coil device.

FIG. 6 is a perspective view illustrating a use state of a power generation coil device in which two transformers are arranged in series.

FIG. 7 is an explanatory perspective view of a transformer.

FIG. 8 is a perspective view illustrating a use state of a power generation coil device in which two transformers are arranged in parallel.

[Explanation of symbols]

A power generating coil X power generating coil device Y power generating coil device Z power generating coil device 1 transformer 2 external magnet 3A transformer 3B transformer 4A external magnet 4B external magnet 4C external magnet 4D external magnet 11 iron core 11a primary coil side leg iron 12 primary Coil 13 Secondary coil 31 Iron core 31a Primary coil side leg iron core 32 Primary coil 33 Secondary coil

Claims (3)

(57) [Claims] 1. A core, a transformer having a primary coil and a secondary coil, and a pair of external magnets, the pair of external magnets, one external magnet N pole and other external magnetic
With the S pole of the stone facing the primary coil side of the iron core
The pair of external magnets are respectively abutted on the outer ends of both ends of the leg, and the direction of the magnetic flux generated between them is
The primary coil side leg of the iron core by the primary current of the transformer
Are arranged in a direction opposite to the direction of the magnetic flux generated inside
A power generating coil, characterized in that: 2. A power generating coil device, wherein a plurality of power generating coils according to claim 1 are configured to be able to share an external magnet between power generating coils adjacent to each other. 3. An external magnet comprising: two or more transformers having a primary coil and a secondary coil; and four or more even-numbered horseshoe-shaped external magnets having north and south poles, wherein each of said external magnets is two or more. The direction of the magnetic flux generated by the N pole of one external magnet and the S pole of the other external magnet is opposite to the direction of the magnetic flux generated in the primary coil side leg core by the primary current of the transformer. A power generating coil device, wherein the power generating coil device is disposed so as to be oriented in a direction and each side surface of the pair of external magnets is parallel to a side surface of the primary coil.