KR20200005677A - Portable generator for electric vehicles - Google Patents

Abstract

The present invention relates to a portable generator for an electric vehicle, which, in a state of being detachably mounted on an electric vehicle, receives driving wind which is generated when the electric vehicle is driven, in order to generate electricity. To this end, the present invention comprises: a generating unit comprising a front housing and a rear housing which are coupled to each other to form an inner space, a stator fixated to the inner space, and a rotor assembly rotatably provided at a central portion of the stator and axially rotated by an external force to generate electricity; an impeller unit comprising an impeller casing coupled to the front casing while providing an accommodating space opened to the outside, and an impeller mounted in the impeller casing and rotated by the driving wind introduced into the accommodating space in order to axially rotate the rotor assembly; and a fixating device fixating the generating unit to a vehicle. Therefore, the portable generator for an electric vehicle according to the present invention allows a battery to be frequently charged by using driving wind generated during the driving of a vehicle, such that a charged amount of the battery may be maintained at a satisfactory level, thereby increasing a drivable distance. In addition, the present invention provides a simple and compact configuration and can output electricity of a desired voltage, thereby being able to be utilized for multiple purposes.

Description

Portable generator for electric vehicle

The present invention relates to a vehicle generator, and more particularly, to a portable generator for an electric vehicle that can operate by driving wind in a state installed outside the vehicle of the electric vehicle to generate electric power and transfer the generated electric power to a battery.

As research on alternative energy progresses, interest in electric vehicles has recently increased. Electric vehicles use batteries and motors as driving sources instead of internal combustion engines, and thus are becoming eco-friendly vehicles because they do not cause air pollution by fossil fuels.

Vehicles classified as electric vehicles include pure electric vehicles (Pure EV) and hydrogen electric vehicles (FCEV). A pure electric vehicle receives electric power only from a battery, and a hydrogen electric vehicle receives electric power from a fuel cell stack.

Disadvantages of pure electric vehicles are limited in mileage, that is, the maximum driving distance with a fully charged battery is short, which requires frequent charging. In addition, it takes a long time to charge, for example, it is inconvenient to charge more than four hours in order to travel for only about six hours. At the same time, the charging time will be longer due to deterioration of the battery.

Disadvantages of hydrogen electric vehicles are that hydrogen storage tanks and fuel cell stack systems are very expensive, and infrastructure such as hydrogen charging stations is insufficient compared to hydrogen electric vehicles.

On the other hand, in recent years, pure electric vehicles (hereinafter, referred to as electric vehicles) are trying to increase fuel efficiency by reducing the weight of the vehicle body in order to increase the range of the vehicle that can be driven per charge. However, even if the structure of the vehicle body is improved, the weight reduction of the vehicle body is limited somewhere, so another technique for increasing the driving distance is required. For example, there is a need for a technique for maintaining a maximum charging rate of a battery.

Korean Patent Publication No. 10-2015-0097978 (Electric vehicle power supply, power supply method and vehicle having the same) Domestic Publication No. 10-2017-0019390 (wind power electric vehicle or hybrid vehicle) Domestic Registration Utility Model Publication No. 20-0397112 (wind power generation device of electric vehicle)

The present invention has been made to solve the above problems, and by utilizing the driving wind generated during the driving of the vehicle to charge the battery from time to time, it is possible to maintain a good charge of the battery can increase the driving distance by that much, the structure is simple Its purpose is to provide a portable generator for electric vehicles that can be used for various purposes because it can output power of compact and desired voltage.

The portable generator for an electric vehicle of the present invention for achieving the above object is a front housing for generating electric power by receiving the driving wind generated when the electric vehicle is driven while being detachably mounted to the electric vehicle. And a power generation unit including a rear housing, a stator fixed to the inner space, and a rotor assembly provided to be rotatable at the center of the stator, and configured to rotate by external force to generate electric power. An impeller casing coupled to the front casing and providing an open receiving space to the outside, and an impeller mounted on the impeller casing and rotating by the traveling wind flowing into the receiving space to axially rotate the rotor assembly. An impeller portion; It includes a fixing device for fixing the power generation unit to the vehicle.

In addition, the fixing device; And a portable electromagnet fixed to the outer side of the vehicle in a state coupled to the rear casing by using a magnetic force.

In addition, a vibration damping pad is provided between the electromagnet and the rear casing.

In addition, the rotor assembly; A connecting shaft installed in the inner space to be axially rotatable and extending into the impeller casing and coupled to the central shaft portion of the impeller and positioned in the inner space to pass the connecting shaft to the central shaft portion. It includes a hexagonal rotor having six fixed surfaces, and a plurality of removable magnets detachably bolted to the fixed surface of the hexagonal rotor and increase rotational inertia force during axial rotation of the connecting shaft.

In addition, the first passage of the impeller casing is opened in the longitudinal direction of the connecting shaft, and the second passage is opened in the direction orthogonal to the longitudinal direction of the connecting shaft so that the portable generator can be used to lay down or stand upright.

The portable generator for an electric vehicle of the present invention as described above uses the driving wind generated during the driving of the vehicle to charge the battery at any time, so that the amount of charge of the battery can be maintained satisfactorily.

In addition, the structure is simple, compact and can output the power of the desired voltage, it is versatile.

1 is a side cross-sectional view for explaining the main configuration of a portable generator for an electric vehicle according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the rotor assembly shown in FIG. 1. FIG.
3 is a view for explaining a method of using a portable generator for an electric vehicle according to an embodiment of the present invention.
Figure 4 is a side cross-sectional view showing another example of a portable generator for an electric vehicle according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a method of using the portable generator illustrated in FIG. 4.
6 is a diagram illustrating an example in which a portable generator for an electric vehicle is mounted on an electric vehicle according to an embodiment of the present invention.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view for explaining the main configuration of a portable generator for an electric vehicle according to an embodiment of the present invention.

Basically, the portable generator 10 for an electric vehicle according to the present embodiment is mounted at an appropriate position of the electric vehicle (A of FIG. 6), and operates by receiving the driving wind while the electric vehicle A is running, thereby producing electric power. It has a portion 12, a power generating portion 14 and a fixing device (40 in Figs. 3 and 5).

As shown in the drawing, the power generation unit 14 includes a front housing 14a and a rear housing 14c which are coupled to each other to form the internal space 14e, and a stator 16 fixed to the internal space 14e, The rotor assembly 20 is provided to be rotatable in the center of the stator 16 and rotates by external force to generate electric power.

The front housing 14a and the rear housing 14c are cylindrical members that are open to each other, and are coupled to each other in a state in which the stator 16 and the rotor assembly 20 are accommodated to form a cylindrical casing.

In addition, a bearing groove 14b is formed on the bottom of the front housing 14a and accommodates the bearing 27 therein. Bearing grooves 14d r for accommodating and fixing other bearings 27 are also provided on the upper surface of the rear housing 14c. The two bearings 27 support the connecting shaft 21 to be rotatable in a fixed state in the bearing grooves 14b and 14d.

The stator 16 is fixed to the inner wall surface of the front housing 14a as a portion in which the coil 16a is wound and fixed to the inside of the inner space 14e, similar to a general generator. When the rear housing 14c is separated from the front housing 14a, the stator 16 remains fixed to the front housing 14a.

The rotor assembly 20 is installed so as to be rotatable in the central portion of the stator 16, and receives the rotational force from the impellers (29, 45) to be described later to rotate the shaft to generate power, the configuration shown in FIG. Has

FIG. 2 is an exploded perspective view of the rotor assembly 20 shown in FIG. 1.

As shown in FIG. 2, the rotor assembly 20 is fixed to the connecting shaft 21, the hexagonal rotor 23 through which the connecting shaft 21 passes through the center thereof, and the outer side of the hexagonal rotor 23. It is composed of a plurality of removable magnets (25).

The connecting shaft 21 is an annular member having a constant diameter. As shown in FIGS. 1 and 4, the connecting shaft 21 is extended to the inside of the impeller casing 12a in a state supported by two bearings 27. 29, 45) is coupled to the axis. It is to serve to transmit the rotational force of the impeller (29, 45) to the power generation unit (14).

In addition, the hexagonal rotor 23 is a hexagonal columnar member for passing the connecting shaft 21 to the central shaft portion. The hexagonal rotor 23 is axially rotated together with the removable magnet 25 at the central shaft portion of the stator 16. In particular, as shown in FIG. 2, six fixing surfaces 23a are provided on the outward surface of the hexagonal rotor 23. The fixing surface 23a is a flat fixing surface for individually fixing the removable magnet 25 and has two female screw holes 23b.

The removable magnet 25 is a permanent magnet in the form of a hexahedron, fixed in close contact with the fixing surface 23a, rotates when the connecting shaft 21 is rotated, and generates power by interacting with the stator. In addition, the removable magnet 25 serves to increase the rotational inertia of the rotor assembly 20 in a fixed state on the outer surface of the hexagonal rotor (23).

In addition, the detachable magnet 25 is provided with two through holes 25a. The through hole 25a corresponds to the female screw hole 23b and allows the fixing screw 25b to pass therethrough. The detachable magnet 25 with respect to the hexagonal rotor 23 by engaging the fixing screw 25b with the female screw hole 23b through the through hole 25a while keeping the removable magnet 25 in close contact with the fixing surface 23a. Will be fixed.

On the other hand, the impeller portion 12 includes an impeller casing 12a and an impeller 29. The impeller casing 12a is a member that is coupled to the upper portion of the front housing 14a and provides a receiving space 12d, and is opened to the outside through the first passage 12b and the second passage 12c. Since the impeller 29 shown in FIG. 1 rotates in response to the pressure of the air coming in the same direction as the center of rotation, it can be said to be an axial flow type.

The impeller 29 rotates under the pressure of the traveling wind flowing in the direction of arrow a through the first passage 12b, and rotates the connecting shaft 21. After passing the kinetic energy to the impeller 29, the air passes through the second passage 12c and is discharged in the direction of arrow b. The power generation unit 14 generates electric power by receiving the rotational force of the impeller 29 and applies the generated electric power to the outside, that is, the battery (Z in FIG. 6) through the output line 17.

For reference, the output line 17 may be implemented by six strands, for example, lines 1 to 6 (having mutually different colors). In addition, the wires of each strand can output different voltages through various combinations. For example, 200 volts by combining lines 1 and 2, 15 volts by combining lines 1 and 3, 200 volts by combining lines 1 and 4, 200 volts, 1 and 5 lines, 200 volts, 1 and 6 140 volts by combining lines, 200 volts by combining lines 2 and 4, 200 volts by combining lines 2 and 5, 200 volts by combining lines 2 and 6, 200 volts by combining lines 3 and 4 It is possible to output 300 volts by combining 200 volts, 3 and 5 lines, 250 volts, and 3 and 2 lines.

Since various voltages can be output as described above, it is possible to supply appropriate power required by the power demand of each electric vehicle.

Meanwhile, as shown in FIG. 3, the fixing device 40 serves to fix the portable generator 10 to the electric vehicle A. A configuration thereof will be described with reference to FIG. 3.

3 is a view for explaining how to use the portable generator 10 for an electric vehicle according to an embodiment of the present invention.

As shown in FIG. 3, the fixing device 40 includes an electromagnet 42 and a buffer pad 41. The electromagnet 42 is a portable electromagnet having a battery (not shown) inside thereof, and is turned on and off by the switch 42a. For example, when the switch 42a is turned ON, the electromagnet 42 is magnetized and fixed to the surface of the electric vehicle A. When the switch 42a is turned ON, the switch 42a is demagnetized to lift and recover the generator 10.

In addition, the shock absorbing pad 41 is a plate-shaped member having a predetermined thickness, and attenuates vibration in a state interposed between the electromagnet 42 and the rear casing 14. For example, the vibration generated during the running of the electric vehicle A is blocked from being transmitted to the generator 10, and conversely, the vibration generated from the generator 10 is prevented from being transmitted to the electric vehicle A. Rubber or silicone can be used as the buffer pad 41.

3, the first passage 12b of the portable generator 10 faces the traveling direction P of the electric vehicle A. As shown in FIG. That is, the portable generator 10 is set in a lying state. The running wind flowing into the first passage 12b according to the running of the electric vehicle is discharged through the second passage 12c after rotating the impeller 29.

4 is a side cross-sectional view showing another example of a portable generator 10 for an electric vehicle according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

The impeller 45 shown in FIG. 4 has a different form from the impeller 29 shown in FIG. The impeller 45 of FIG. 4 is of a type in which pressure is transmitted by the traveling wind flowing in the direction of the arrow c through the second passage 12c. The traveling wind flowing in the direction of arrow c is rotated across the impeller casing 12a and discharged in the direction of arrow d on the opposite side after rotating the impeller 45. As described above, the power generation unit 14 generates electric power by the rotation of the impeller 45.

FIG. 5 is a view illustrating a usage of the portable generator 10 shown in FIG. 4.

As described above, since the running wind escapes across the impeller casing at the periphery of the impeller portion 12, the generator 10 may be upright on the fixing device 40. That is, the generator 10 can operate under the pressure of the running wind generated during the running of the electric vehicle A in a state in which the generator 10 is upright.

6 is a diagram illustrating a mounting example in which the portable generator 10 for an electric vehicle is mounted on the electric vehicle A according to an embodiment of the present invention.

As shown in the drawing, two portable generators 10 are mounted on the electric vehicle A. Installation number or position of the portable generator 10 can be changed as much as the case. For example, it can be installed in the upper part of the trunk of the rear as well as in the upper part of the bonnet of the vehicle.

The portable generator 10 generates electric power under the driving wind pressure generated when the electric vehicle A runs in the p-direction, and transmits the generated electric power to the battery Z to maintain the charging rate of the battery as high as possible.

In addition, if necessary, the portable generator 10 may be wrapped in a separate casing. For example, a casing having a wind tunnel through which the driving wind passes can be fixed and disposed therein.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

DESCRIPTION OF SYMBOLS 10 Portable generator 12 Impeller part 12a Impeller casing
12b: First passage 12c: Second passage 12d: Space
14: power generation unit 14a: front housing 14b: bearing groove
14c: rear housing 14d: bearing groove 14e: inner space
16: Stator 16a: Coil 17: Output line
20: rotor assembly 21: connecting shaft 23: hexagon rotor
23a: fixed surface 23b: female threaded hole 25: removable magnet
25a: Through hole 25b: Fixing screw 27: Bearing
29: impeller 40: fixing device 41: buffer pad
42: electromagnet 42a: switch 45: impeller

Claims (1)

As receiving the running wind which occurs at the time of running of the electric vehicle in the state detachably attached to the electric vehicle and producing electric power,
A power generation including a front housing and a rear housing coupled to each other to form an internal space, a stator fixed to the internal space, and a rotor assembly provided to be rotatable in the center of the stator and being rotated by external force to generate power. Wealth;
An impeller casing coupled to the front casing and providing an open receiving space to the outside, and an impeller mounted on the impeller casing and rotating by the traveling wind flowing into the receiving space to axially rotate the rotor assembly. An impeller portion;
Portable generator for electric vehicles comprising a fixing device for fixing the power generation unit to the vehicle.

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