KR101170001B1

KR101170001B1 - Motor

Info

Publication number: KR101170001B1
Application number: KR1020100024669A
Authority: KR
Inventors: 이정용
Original assignee: 이정용; 주식회사 레오모터스
Priority date: 2010-03-19
Filing date: 2010-03-19
Publication date: 2012-07-31
Also published as: KR20110105498A

Abstract

The present invention relates to a motor. The motor according to the present invention is installed in the housing so as to be rotatable based on the central axis of the cylindrical housing, and is formed from the cylindrical body portion and its body portion disposed inside the housing in a form surrounding the central axis. A drive shaft having a power transmission portion extending from the body portion through the housing in a direction of the central axis so as to transmit rotational force to the outside of the housing; A magnetic coupled to the main body of the drive shaft so as to rotate together with the drive shaft and disposed in a form surrounding the inner and outer circumferential surfaces of the main body; A first coil coupled to the housing in a form surrounding the central axis of the housing and disposed inside the main body part while being spaced apart from the magnetic; And a second coil coupled to the housing so as to be spaced apart from the magnetic on the opposite side to the first coil with the magnetic interposed therebetween.

Description

Motor

The present invention relates to a motor, and more particularly to a motor having an improved structure to suppress a relatively large current consumption.

In general, the power generating means of the electric vehicle is a motor. The motor is a device that converts electrical energy into mechanical work by using a force that a current receives in a magnetic field. As shown in FIG. 1, a rotor 1 and a permanent magnet, in which a plurality of coils are wound on a conductor, are illustrated. It comprises a field (2) to form a magnetic field.

In such a motor, when a current-carrying conductor is placed in a magnetic field, electromagnetic force is generated in a direction perpendicular to the direction of the magnetic field, and is rotated by Fleming's left hand law, thereby generating power.

The magnitude of the electromagnetic force is proportional to the strength of the magnetic field, the magnitude of the current, and the length of the coil. In general, the motor controls the rotation of the motor by adjusting the magnitude of the current.

However, unlike a general product in which a motor is employed, in the case of an electric vehicle, a vehicle having a heavy weight needs to be moved to the motor. Therefore, a large current must be applied to transmit the rotational force to the motor.

As a result, there is a problem in that the use of a large capacity battery is required due to the rapid consumption of electricity stored in the battery, and the replacement cycle of the fuel cell for supplying electricity to the battery is accelerated.

Therefore, in order to increase the use efficiency of the battery it is necessary to develop a product that can generate a larger electromagnetic force by the same current density.

The present invention has been made to solve the above problems, an object of the present invention is to provide a motor that can generate a large electromagnetic force by the same current.

Another object of the present invention is to provide a motor that enables a long time use of the battery by increasing the use efficiency of the current.

The present invention for achieving the above object is installed in the housing so as to be rotatable based on the central axis of the cylindrical housing, and the cylindrical body portion disposed inside the housing in a form surrounding the central axis and from the body portion A drive shaft having a power transmission portion extending from the body portion through the housing in the direction of the center axis so as to transmit the generated rotational force to the outside of the housing; A magnetic coupled to the main body of the drive shaft so as to rotate together with the drive shaft and disposed in a form surrounding the inner and outer circumferential surfaces of the main body; A first coil coupled to the housing in a form surrounding the central axis of the housing and disposed inside the main body part while being spaced apart from the magnetic; And a second coil coupled to the housing so as to be spaced apart from the magnetic on the opposite side to the first coil with the magnetic interposed therebetween.

Preferably, the present invention includes a center rib disposed on the center axis of the housing along the center axis of the housing, fixed to the housing, and having the first coil installed to be relatively rotatable.

The present invention may further include a clutch for dynamically connecting and disconnecting the first coil and the main body to be selectively rotated together with the central coil with respect to the central rib. .

In the present invention, the main body portion of the drive shaft, disposed on the center axis line of the housing and may be configured to include; a central rib that rotates with the body portion.

The present invention includes a first clutch for dynamically connecting and disconnecting the first coil and the main body to be selectively rotated together with the central coil with respect to the central rib; And fixing the first coil to the housing in a state where the power connection between the first coil and the main body is released by the first clutch, and in a state in which the power connection between the first coil and the main body is released. It may be configured to further include; a second clutch to enable rotation with respect to the housing of one coil.

In the motor according to the present invention having the above-described configuration, instead of increasing the current density, it is possible to increase the strength of the magnetic field by arranging the first coil and the second coil with the magnetic interposed therebetween, resulting in the same current. The density also allows for greater electromagnetic forces. Therefore, when the motor according to the present invention is employed in an electric vehicle, it is possible to increase the use efficiency of the current of the electric vehicle, thereby deriving the advantage of increasing the battery use efficiency.

1 is a cross-sectional view of a general motor.
2 is a cross-sectional view of a motor according to an embodiment of the present invention.
3 is a cross-sectional view of a motor according to another embodiment of the present invention.
Figure 4 is a view showing a state in which the clutch is adopted in another embodiment of the present invention the first coil and the main body portion is dynamically connected.
5 and 6 are cross-sectional views of a motor according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a motor according to an embodiment of the present invention will be described in detail.

2 is a cross-sectional view of a motor according to an embodiment of the present invention.

As shown in this figure, the motor according to the present invention comprises a drive shaft 10, the magnetic 20, the first coil 30 and the second coil 40.

The drive shaft 10 is installed in the housing 50 so as to be rotatable based on the central axis C of the cylindrical housing 50. The drive shaft 10 is composed of a cylindrical body portion 12 and a power transmission portion 14 extending from the body portion 12.

In the present embodiment, on the center axis C, a center rib 52 providing a center of rotation of the drive shaft 10 is provided to be fixed to the housing 50. That is, the drive shaft 10 is rotated by using the center rib 52 fixed to the housing 50 as the center of rotation.

The main body 12 of the drive shaft 10 is disposed inside the housing 50 in a form surrounding the center axis C, and the power transmission unit 14 is in the direction of the center axis C. It extends through the housing 50. When the central rib 52 is disposed on the central axis C as in the present embodiment, the main body part 12 is disposed in a form surrounding the central rib 52, and the power transmission part ( 14 penetrates through the housing 50 along the extending direction of the central rib 52.

The magnetic 20 is coupled to the main body 12 of the drive shaft 10 is rotated together with the drive shaft (10). In the present embodiment, the magnetic 20 is arranged in a form surrounding the inner circumferential surface and the outer circumferential surface of the body portion 12, thereby enabling the formation of a magnetic field between the first coil 30 and the second coil 40. do.

The first coil 30 is coupled to the housing 50 in a form surrounding the central axis C of the housing 50. In the present embodiment, the first coil 30 is disposed in a form surrounding the central rib 52 disposed on the central axis C, and spaced apart from the magnetic 20. It is arranged inside of (12).

By applying a current to the first coil 30, an electromagnetic force is generated in the magnetic field, and the driving shaft 10 is rotated by the electromagnetic force. The drive shaft 10 is, for example, by being electrically connected to the wheel of the electric vehicle, thereby enabling the driving of the electric vehicle.

The present invention includes the second coil 40 separately from the first coil 30. The second coil 40 is disposed to be spaced apart from the magnetic 20 on the side opposite to the first coil 30 with the magnetic 20 therebetween.

By applying a current to the second coil 40, an electromagnetic force is generated in the magnetic field. Here, the electromagnetic force by the first coil 30 and the second coil 40 will be described.

The electromagnetic force refers to the force received by the conductor through which the current flows in the magnetic field, and is proportional to the strength of the magnetic field, the strength of the current, or the length of the conductor. Here, the length of the conductive wire corresponds to the number of windings of the coil, which increases the inductance of the coil and ultimately affects the electromagnetic force.

Therefore, according to the configuration in which the first coil 30 and the second coil 40 are disposed with the magnetic 20 therebetween as in the present invention, when one coil is wound as in the prior art. By relatively increasing the electromagnetic force, it is possible to increase the torque of the drive shaft (10).

The electromagnetic force is proportional to the strength of the magnetic field and the current density. That is, in order to increase the electromagnetic force, the strength of the magnetic field must be increased or the current density must be increased. However, when a large current is applied to increase the current density, the battery life of the electric vehicle is shortened, resulting in a decrease in the use efficiency of the battery.

In order to overcome this disadvantage, the present invention instead of increasing the current density, by disposing the first coil (30) and the second coil (40) with the magnetic (20) in between. The strength of the magnetic field can be increased, resulting in a higher electromagnetic force even with the same current density. Therefore, when the motor according to the present invention is employed in an electric vehicle, it is possible to increase the use efficiency of the current of the electric vehicle, thereby deriving the advantage of increasing the battery use efficiency.

Figure 3 is a cross-sectional view of a motor according to another embodiment of the present invention, Figure 4 is a view showing a state in which the clutch is employed in another embodiment of the present invention to the first coil and the main body portion is connected to the power.

As shown in these figures, in this embodiment, unlike the embodiment described above, the first coil 110 is installed to be relatively rotatable with respect to the central rib 160. In addition, the present embodiment further includes a clutch 140 for dynamically connecting and disconnecting the first coil 110 and the main body 122 of the drive shaft 120.

Meanwhile, in FIG. 4, the state in which the first coil 110 and the main body 122 are dynamically connected by the clutch is illustrated in black. In FIG. 3, the first coil 110 and the main body 122 are illustrated in black. ), The power disconnection state is shown in white.

First, as shown in FIG. 3, when the first coil 110 and the main body 122 are not dynamically connected, the first coil 110 and the second coil 130 are positioned. As the main body 122 is rotated together with the magnetic 150 in a fixed state, the strength of the magnetic field is increased by the first coil 110 and the second coil 130, and thus, the above-described embodiment As a result, a greater electromagnetic force can be obtained.

However, as shown in FIG. 4, when the first coil 110 and the main body 122 are dynamically connected to each other by the clutch 140, the first coil 110 is connected to the main body. By rotating together with the 122 and the magnetic 150, a small electromagnetic force is obtained by the action of the second coil 130 alone.

As such, when the first coil 110 and the main body 122 are selectively powered by the clutch 140, for example, when the electric vehicle is driven at a low speed, only the second coil 130 has a current. By applying the current consumption can be relatively reduced, it is possible to further increase the use efficiency of the battery.

5 and 6 are cross-sectional views of a motor according to still another embodiment of the present invention.

As shown in these figures, in this embodiment, unlike the embodiment described above, the center rib 222a disposed on the center axis of the housing 210 is rotatably installed with respect to the housing 210. The central rib 222a constitutes a part of the main body 222 of the drive shaft 220.

That is, the center rib 222a is formed integrally with the main body portion 222 and is configured to rotate together with the main body portion 222.

In this embodiment, the rotation of the first clutch 250 and the housing 210 of the first coil 250 and the first coil 250 to power the connection and disconnection of the first coil 230 and the main body portion 222 is controlled. It is further provided with a second clutch 260 to selectively enable.

That is, as shown in Figure 5, the first coil 230 is installed in the housing 210 so as to be rotatable about the central axis of the housing 210, the first clutch 250 is the first coil The first coil 250 and the main body by releasing the power connection between the first coil 230 and the housing 210 are energized by connecting the 230 and the main body 222 to each other. Allow portion 222 to rotate together. In this state, by applying a current only to the second coil 260, it is possible to increase the battery use efficiency during low-speed operation of the electric vehicle.

On the other hand, a large torque is required for the drive shaft 220 during the high speed driving of the electric vehicle. Therefore, as shown in FIG. 6, the power connection between the first coil 230 and the main body 222 by the first clutch 250 is released and the first coil is released by the second clutch 260. By fixing the 230 to the housing 210, the main body 222 can be rotated between the first coil 230 and the second coil 240 together with the magnetic 270. In this state, when the current is applied to the first coil 230 and the second coil 240, respectively, a large electromotive force can be obtained. Consequently, the magnetic field is not affected by the large current density at high speed of the electric vehicle. Intensity can be increased to increase the battery use efficiency.

As mentioned above, although preferred embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments but is defined by the claims, and various modifications and adaptations can be made in the technical field to which the present invention belongs. Self-explanatory

10: drive shaft 12: main body
14: power transmission part 20: magnetic
30: 1st coil 40: 2nd coil
50: housing 52: center rib
C: center axis

Claims

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Installed in the housing so as to be rotatable with respect to the central axis of the cylindrical housing, the cylindrical body portion disposed inside the housing in a form surrounding the central axis and the rotational force generated from the body portion to the outside of the housing A drive shaft having a power transmission portion extending from the body portion through the housing in a direction of the central axis from the main body portion;
A magnetic coupled to the main body of the drive shaft so as to rotate together with the drive shaft and disposed in a form surrounding the inner and outer circumferential surfaces of the main body;
A first coil coupled to the housing in a form surrounding the central axis of the housing and disposed inside the main body part while being spaced apart from the magnetic; And
And a second coil coupled to the housing so as to be spaced apart from the magnetic on the opposite side to the first coil with the magnetic interposed therebetween.
And a center rib disposed on the center axis along the center axis of the housing and fixed to the housing, the center rib being rotatably installed in the first coil.

The method of claim 2,
And a clutch for dynamically connecting and disconnecting the first coil and the main body to be selectively rotated together with the central coil with respect to the central rib.

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