KR20010011034A - Energy converter for vehicle - Google Patents

Abstract

PURPOSE: A device is provided to convert continuous kinetic energy to electric energy while traveling a vehicle. CONSTITUTION: While reciprocating a piston(17), the piston is inputted to a damper cylinder(15). The damper cylinder is inputted to an outer cylinder(23). Herein, inside of the outer cylinder is compressed for discharging fluid(39) through a fluid opening(22). The fluid is transferred along a connect pipe(18) for being inputted to a generate cylinder(25) through a fluid passing aperture(24) of the cylinder. A permanent magnet(27) of the generate cylinder is moved toward an air passing aperture(26) for inducing current to a coil(31). Herein, amount of current is varied by adjusting radius of the generate cylinder and wound number of the coil. The induced current is collected by a current collect control unit(41).

Description

Automotive energy conversion device {ENERGY CONVERTER FOR VEHICLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy conversion device, and more particularly, to an energy conversion device for a vehicle capable of converting continuous up and down kinetic energy into electrical energy while driving a vehicle.

Vehicles on the road receive continuous vibrations or shocks from the road through the wheels. Therefore, the vehicle is typically provided with a shock absorber between the frame and the axle to attenuate the shock or vibration transmitted to the wheels, thereby preventing damage to the vehicle body and the devices and components mounted inside the vehicle body and at the same time improving the ride comfort. Let's do it.

The shock absorber has a piston accommodated in the cylinder, and is a device for dissipating the vertical kinetic energy of the piston flowing in the vertical direction by the vibration or shock transmitted from the road surface as heat energy by friction with the cylinder. These shock absorbers are solid friction and hydraulic, of which hydraulic shock absorbers (Shoch Absorber), which is relatively economical and excellent in cushioning power, are mainly used. The hydraulic shock absorber adds a predetermined fluid to the cylinder, and adds a function of damping vibration or shock by using a resistance by the fluid.

By the way, in recent years, the technique which makes such a hydraulic shock absorber perform a role as an energy conversion apparatus other than simply a shock absorber has been proposed. The road shock energy converter for charging vehicle batteries disclosed in U.S. Patent No. 4,032,829 converts the up and down kinetic energy of a piston linked to the flow of the vehicle into electrical energy to charge the vehicle battery. A technique is disclosed.

However, these conventional techniques have a problem that the device configuration is relatively difficult to apply due to the complexity, and difficult to provide at a low price. When the vibration or the impact of the running vehicle is less than or equal to the predetermined value, the vertical reciprocation of the piston is weak, and the charging efficiency of electrical energy is low.

On the other hand, various types of energy converters including a charging device using a suspension device of a vehicle disclosed in Korean Utility Model Registration Application Nos. 94-12429 and 94-12430 have been proposed in Korea. However, domestic technologies have been rejected for reasons that can be devised extremely easily from known technologies, including the above-mentioned US Patent 4,032,829. For this reason, there is an urgent need to develop a technology capable of buffering the flow of the vehicle generated during driving and at the same time converting the kinetic energy emitted by the thermal energy into electrical energy.

Accordingly, an object of the present invention is to provide an energy conversion device for a vehicle that can be manufactured inexpensively with a relatively simple configuration in order to convert continuous kinetic energy into electrical energy while driving the vehicle in view of such a conventional problem.

1 is a partial perspective view of a vehicle equipped with an energy conversion device for a vehicle according to the present invention;

FIG. 2 is a longitudinal sectional view of FIG. 1, which is a schematic configuration diagram of an energy conversion device for a vehicle according to the present invention; FIG.

3 is an operating state diagram of FIG. 2.

* Explanation of symbols for the main parts of the drawings

1: vehicle 3: frame

5 axle 11 energy converter

13: damper 14: spring

15 damper cylinder 17 piston

19, 39: fluid 21: power generation unit

22: fluid entrance 23: outer cylinder

24: fluid passage 25: power generation cylinder

26: air passage 27: permanent magnet

28 connector 31 coil

41: current collecting control unit

According to an aspect of the present invention, there is provided a damper cylinder and a damper that is reciprocally accommodated in the damper cylinder, and is attached to a damper that expands and contracts according to a road surface state, wherein the kinetic energy of the vehicle is converted into electrical energy. An external cylinder accommodating a damper cylinder to be accessible and forming a fluid receiving chamber between the damper cylinder and an area varying in accordance with the expansion and contraction of the damper; A power generation cylinder in communication with the external cylinder through a connection pipe; A permanent magnet housed in the power generation cylinder in a longitudinal direction and movable by the fluid from the fluid chamber; And a power generation coil wound along a longitudinal direction of the power generation cylinder.

Here, the permanent magnet may further include a means for charging the electrical energy induced in the coil during the reciprocating movement.

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

1 is a partial perspective view of a vehicle in which an energy conversion device for a vehicle according to the present invention is installed, and FIG. 2 is a longitudinal cross-sectional view of the vehicle energy conversion device according to the present invention. As can be seen in the drawing. The axle 5 is provided below the frame 3 of the vehicle 1 in the traveling direction of the vehicle. Wheels 7 are rotatably mounted at both ends of the axle 5, respectively. Between the frame 3 and the axle 5 is an energy converter 11 according to an embodiment of the invention.

The energy converter 11 is provided between the frame 3 and the axle 5 to convert the kinetic energy transmitted from the damper 13 and the damper 13 into a current to attenuate the flow of the frame 3. The power generation unit 21 is provided. It includes a current collecting control box 41 for collecting the current generated by the power generation unit 21 to convert into electrical energy that can be used in various vehicles.

The damper 13 is generally called a shock absorber, and the damper cylinder 15 provided on the other side and the piston 17 provided on one side of the frame 3 and the axle 5 are large, and It is composed of a spring 14 interposed between the frame 3 and the axle 5 to elastically access each other. In this embodiment, the connecting rod 18 of the piston 17 is coupled to the axle 5, and the damper cylinder 15 is coupled to the frame 3 side. Joint portions 8.9 are formed at both ends of the piston 17 and the damper cylinder 15, respectively.

The piston 17 is housed in the damper cylinder 15 so as to be reciprocated. The damper cylinder 15 has a tubular shape, and a corrugated pipe 6 is provided on the outer surface. A predetermined fluid 19 is injected into the damper cylinder 15, and an orifice (not shown) through which the fluid passes is formed in the piston 17. A sealing member 16 for maintaining airtightness is interposed at the connecting rod entrance and exit of the damper cylinder 15. When shock or vibration is transmitted from the outside, the piston 17 is accommodated in the damper cylinder 15. And the piston 17 accommodated in the damper cylinder 15 is restored to the original state by the spring 14 mentioned later. At this time, the kinetic energy is attenuated by the resistance of the fluid 19 to the friction between the piston 17 and the inner wall surface of the damper cylinder 15 and the progress of the piston 17.

On the other hand, the power generation unit 21 is large, the outer cylinder 23 for accommodating the damper cylinder 15 to the outside, the tubular power generation cylinder 27, the power generation cylinder 27 fixed to the outside of the outer cylinder 23 ) A permanent magnet 27 reciprocally accommodated therein, and a coil 31 for generating an induction current by the reciprocating motion of the permanent magnet 27. The outer cylinder 23 is installed in the standing direction with a predetermined radius and is integrally formed with the piston 17. An upper opening and closing opening is formed at an upper end of the outer cylinder 23 to receive the damper cylinder 15 in an accessible manner. Sealing member 16 is interposed in the entrance and exit opening to maintain the airtight between the outer cylinder 23 and the power generating cylinder 31.

At the lower edge of the damper cylinder 15 accommodated in the outer cylinder 23, an outward protrusion 20 is provided along its outer circumferential surface. The protrusion 20 is in close contact with the inner wall surface of the outer cylinder 23, whereby the inside airtight is maintained, a predetermined space, that is, a fluid receiving chamber is formed between the outer cylinder 23 and the damper cylinder 15. . A predetermined fluid 39 is injected into the fluid containing chamber. The damper cylinder 15 having such a protrusion 20 serves as a piston in the outer cylinder 23.

The outer cylinder 23 is further provided with a fluid inlet 22 that is opened outward at its lower edge. One end of the connection pipe 28, which will be described later in detail, is coupled to the fluid inlet 22. When the damper cylinder 15 flows into the outer cylinder 23 and the space in the outer cylinder 23 decreases, the pressure inside increases, whereby the fluid 39 contained therein becomes the fluid inlet 22. Is spilled through.

On the other hand, a spring 14 is interposed between the outer cylinder 23 and the damper cylinder 15. A flange 55 protrudes outwardly along the circumferential direction of the upper outer wall surface of the outer cylinder 23, and a mount 53 facing the flange 55 of the damper cylinder 15 in the upper region of the damper cylinder 15. ) Is installed. A spring 14 is interposed between these flanges 55 and the mount 53, whereby a force from the outside acts so that the damper cylinder 15 flows into the outer cylinder 23. The damper cylinder 15 may be returned to its original state by the elastic force.

The power generation cylinder 25 is separately installed outside the outer cylinder 23. In the present embodiment, for ease of explanation, the fixing flange 35 is provided on the outer wall surface of the damper cylinder 15, and the power generating cylinder 25 is fixed to the fixing flange 35. The power generating cylinder 25 has a tubular shape and has a predetermined length, and accommodates the permanent magnet 27 therein in a flowable manner. Both ends of the power generation cylinder 25 are formed with a fluid passage hole 24 and an air passage hole 26, respectively. The fluid passage hole 24 is interconnected with the fluid inlet 22 through a connection pipe 28. Then, the air passage hole 26 allows air from the outside to flow into or out of the power generating cylinder 25. The inner wall surface of the power generating cylinder 25 and the outer surface of the permanent magnet 27 prevent the fluid 39 introduced into the power generating cylinder 25 through the fluid passage hole 24 from flowing into the air passage hole 26. It is desirable to keep it airtight.

When the permanent magnet 27 accommodated in the power generation cylinder 25 moves in one direction, for example, toward the air passage hole 26, the fluid flows from the external cylinder 23 through the fluid passage hole 24 to the power generation cylinder 25. At the same time, the air on the air passage hole 26 side of the power generation cylinder 25 flows out through the air passage hole 26. On the other hand, when the permanent magnet 27 moves to the fluid passage hole 24 side, the fluid at the fluid passage hole 24 side in the power generation cylinder 25 flows out to the buffer portion through the fluid passage hole 24, and at the same time the cylinder Outside air is introduced into the air through the air through hole 26.

The coil 31 is wound along the longitudinal direction on the outer wall surface of the power generating cylinder 25. A coil protection layer 33 for protecting the coil 31 may be provided on the outer wall surface of the power generation cylinder 25. Therefore, when the permanent magnet 27 accommodated in the power generation cylinder 25 moves along the longitudinal direction of the power generation cylinder 25, current is induced in the coil 31 by the change of the magnetic field. At this time, the induced current is proportional to the number of turns and the cross-sectional area of the power generation cylinder 25 according to Faraday's law, and is expressed by Equation 1 below.

Here, N is the number of turns, and A is the cross-sectional area of the power generating cylinder 25.

On the other hand, the coil 31 is connected to a separate current collecting control unit 41. As a result, the electric current induced in the coil 31 is collected by the current collecting control part 41 and charged in the battery 45 or used in other vehicle electric equipment not shown. At this time, both ends of the coil 31 wound along the longitudinal direction of the power generating cylinder 25 may be connected to the current collecting control section 41, and, on the other hand, a predetermined interval along the longitudinal direction of the power generating cylinder 25 A plurality of coils branched from the coil 31 may be connected to each other. Here, it is preferable to connect the plurality of coil branch lines to the current collecting control part 41, because the moving distance of the permanent magnet 27 accommodated in the power generation cylinder 25 is not constant.

For example, when only both sides of the coil 31 are connected to the current collecting control part 41, vibration or shock from the outside may be weak. In this case, the permanent magnet 27 accommodated in the power generating cylinder 25 flows in a central region of the power generating cylinder 25 or a part of the entire movement path of the coil 31. This is because current is induced in a partial region of the coil 31, and as a result, the movement distance of the current becomes long, and thus a loss of current may occur. Therefore, it is preferable to connect the plurality of branch points to the current collecting control part 41 in the entire length section of the coil 31.

3 is an operational state diagram of the energy converter according to the present invention. If vibrations or shocks from the road surface are transmitted to the axles 5 through the wheels during the movement of the vehicle 1, first, the axles 5 will flow with respect to the frame 3. At this time, the damper cylinder 15 is received into the outer cylinder 23 and overcomes the elastic force of the spring 14 relative to the rise of the outer cylinder 23, and at the same time the piston 17 formed integrally with the outer cylinder 23. The damper cylinder 15 moves upward to overcome the resistance of the fluid.

On the other hand, the movement of the damper cylinder 15 is prevented at a predetermined position by the resistance of the fluid 19 and the elastic force of the spring 14, after which the damper cylinder 15 until the spring 14 is in its original state. The up and down flow in the outer cylinder (23). At this time, the piston 17 formed integrally with the outer cylinder 23 also reciprocates in the damper cylinder 15 which flows up and down. Hereinafter, in order to facilitate easy explanation and understanding, the operating state of the present energy conversion device made at the time of reciprocating the piston 17 will be described as an example.

As can be seen in the figure, when the piston 17 is introduced into the damper cylinder 15 by vibration or shock from the outside, the damper cylinder 15 is relatively introduced into the outer cylinder 23. At this time, the inside of the outer cylinder 23, that is, the inside of the outer cylinder 23 whose airtight is maintained by the damper cylinder 15 is gradually compressed while the fluid 39 therein passes through the fluid inlet 22. Spills. The outflowing fluid 39 moves along the connecting pipe 18 and flows into the power generating cylinder 25 through the fluid passage hole 24 of the power generating cylinder 25. Then, the permanent magnet 27 in the power generation cylinder 25 is moved toward the air passage hole 26 by the pressure of the fluid 39 flowing into the power generation cylinder 25 from the inside of the outer cylinder 23. At this time, a current is induced in the coil 31 by the movement of the permanent magnet 27 accommodated in the power generating cylinder 25. The amount of induced current can be changed by appropriately adjusting the radius of the power generating cylinder 25 and the number of turns of the coil 31 as can be seen in Equation 1 above. The induced current is collected by the current collecting controller 41.

On the other hand, when the damper cylinder 15 accommodated in the outer cylinder 23 is moved outward by the restoring force of the spring, the fluid in the power generating cylinder 25 flows out through the fluid passage hole 24 and flows into the outer cylinder 23. . Then, the permanent magnet 27 in the power generating cylinder 25 moves to the air passing hole 26 side by the suction force of the fluid 39 flowing out through the air passing hole 26 and at the same time, the air passing hole 26 side The outside air is introduced into the power generation cylinder 25 through the air passage hole (26). At this time, the current is also induced in the coil 31 by the movement of the permanent magnet 27 in the power generation cylinder 25, and this current is collected in the current collecting control section 41, as described above.

As such, the electric current induced in the coil 31 by the movement of the permanent magnet 27 in the power generation cylinder 25 and collected in the current collecting control unit 41 is an energy source or auxiliary device for various devices of the vehicle requiring electrical energy. Can be used as a current. For example, it can be used as electrical energy to operate radios, audio and indoor lighting.

On the other hand, the electrical energy converted from the kinetic energy may be used as an energy source for operating the generator of the vehicle or the air conditioner compressor. In this case, the engine is lightly loaded, which also saves fuel.

Meanwhile, in the above-described and illustrated embodiments, the damping cylinder 15 is coupled to the frame 3 and the shock absorber in which the connecting rod 18 of the piston 17 is coupled to the axle 5 has been described. Depending on the vehicle model, the above configuration may be combined in reverse, thereby providing the same effects as above.

In the above-described and illustrated embodiments, the installation of the power generating cylinder 25 in the standing direction has also been described for ease of explanation. However, when the power generating cylinder 25 is installed in the horizontal direction, the fluid 39 flows toward the air passage hole 26. Can be prevented more effectively.

As described above, according to the present invention, there is provided a vehicle energy conversion device that can be manufactured inexpensively with a relatively simple configuration, and can convert continuous kinetic energy into electrical energy during driving of the vehicle.

Claims (2)

An apparatus for converting a vehicle's kinetic energy into electrical energy, which is attached to a damper cylinder and a damper that expands and contracts according to a road surface condition with a piston reciprocally housed in the damper cylinder. An external cylinder accommodating the damper cylinder to be accessible and forming a fluid receiving chamber having an area varying between the damper cylinder and the damper cylinder according to expansion and contraction of the damper; A power generation cylinder in communication with the external cylinder through a connection pipe; A permanent magnet housed in the power generation cylinder in a longitudinal direction and movable by the fluid from the fluid chamber; And An energy conversion device for a vehicle, comprising: a power generation coil wound along a longitudinal direction of the power generation cylinder. The method of claim 1, And a means for charging electrical energy induced in the coil during the reciprocating movement of the permanent magnet.