KR101597642B1 - Power supply system for magnetic levitation train - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system for a magnetic levitation train, and more particularly, to a power supply system for a magnetic levitation train having a backup power supply device capable of supplying an emergency power supply To a power supply system.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power supply system for a magnetic levitation train,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system for a magnetic levitation train, and more particularly, to a power supply system for a magnetic levitation train having a backup power supply device capable of supplying an emergency power supply To a power supply system.

BACKGROUND ART Conventionally, a wheel type in which power is transmitted to a wheel and which is moved forward or backward by a friction force between the wheel and the railway is used.

However, the wheel-type train is moved by the friction between the wheels and the railway, so that noise is generated severely and the train is operated at a high speed. Therefore, in recent years, many researches and developments have been made to improve the problems of the wheel type train as described above. As a result, a maglev train is presented.

The magnetic levitation train floats on the trajectory with the magnetic force generated by the electromagnets provided at the bottom of the levitated trains. At this time, when the magnetic levitation train advances, the trajectory and the electromagnets repel each other, and the magnetic levitation trains are separated from the orbit by a predetermined distance, and then, the trajectory and the electromagnets move forward and backward.

 Therefore, the magnetic levitation trains can minimize the energy loss due to the wheel friction generated in the existing train, and can be used as the public transportation means in the future because the noise is not generated originally.

To this end, the magnetic levitation train must maintain a constant interval on the orbit. To maintain the interval, a train control system 10 is provided. In the train control system, each load (for example, a door or a lamp) And a floating power source for generating a magnetic force for maintaining the magnetic levitation state. Here, the power supply unit converts power supplied from an external system power supply connected along a line into a control power supply and a floating power supply, and supplies the power.

However, conventional magnetic levitation trains have a problem in that they can not provide a spare power source device for a power failure due to a power failure of an external system power source or an abnormality of a power source device due to a failure or other abnormal situation.

Patent registration No. 626333 (registered on September 13, 2006) Patent Registration No. 626335 (registered on September 13, 2006)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power supply system for a magnetic levitation train having a back-up power supply for supplying an emergency power by detecting a power failure of a main power supply in a magnetic levitation train, .

The present invention also provides a power system for a magnetic levitation train having a plurality of battery packs in which at least one secondary battery is electrically connected to supply an emergency power source in a main power source of a magnetic levitation train.

Another object of the present invention is to provide a power system for a magnetic levitation train having a battery box in which a battery pack for supplying an emergency power source can be easily installed and separated at the time of main power failure of a magnetic levitation train.

The present invention includes the following embodiments in order to achieve the above object.

A preferred embodiment of the power supply system of a magnetic levitation train of the present invention comprises a main power supply unit for supplying power for controlling and floating the magnetic levitation train; An electrostatic charge sensing unit for sensing a power failure of the main power supply unit; A backup power source for supplying an emergency power source when the power failure of the main power source unit is detected by the power failure detection unit; A backup control unit for controlling the supply of the emergency power from the backup power unit when the battery pack comprises a battery pack including a plurality of secondary battery cells housed in the battery box, And a switching unit for switching a power supply line between the main power unit and the backup power unit under the control of the backup control unit, wherein the battery box includes a battery panel in which the battery pack is aligned vertically and laterally from an upper surface thereof; At least one guide means for supporting the battery packs horizontally extended and fixed horizontally at upper ends of the vertical bars so as to be spaced apart from each other; And first fixing means for fixing one battery pack out of at least one battery pack arranged in the longitudinal direction on the upper surface of the battery panel; second fixing means for fixing the other battery pack; And spaced apart support means for supporting the battery pack on one side and the other side between the means.

In another embodiment of the present invention, the backup power source unit includes pack management means for sensing a charging rate, an overcurrent, and a temperature of the battery pack; And an overcurrent breaker for shutting off the battery pack under the control of the pack management unit when an overcurrent is detected in a power supply line connected to the battery pack.

In another embodiment of the present invention, the power system of the magnetic levitation train further includes a vehicle charger that charges the battery pack.

In another embodiment of the present invention, the power system of the magnetic levitation train further includes a display unit for displaying a charging rate and a temperature of the battery pack.

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According to another embodiment of the present invention, the first fixing means includes a first fixing plate erected so as to be in close contact with one side surface of the one-side battery pack; And a first bottom plate horizontally extending from an end of the first fixing plate to the other side, and the second fixing unit includes a second fixing plate erected so as to be in close contact with the other side surface of the other side battery pack, And a second bottom plate extending horizontally to one side from an end of the second fixing plate.

In another embodiment of the present invention, the spacing support means includes a first vertical plate which is erected on both sides of the first vertical plate and which is in close contact with the other side of the one-side battery tack, and a second vertical plate which is in close contact with one side of the second- And a horizontal plate connected horizontally below the first vertical plate and the second vertical plate.

According to the present invention, a safety accident can be prevented in advance by supplying an emergency power source by sensing the main power source during a power failure during operation of the magnetic levitation train, thereby improving safety.

In addition, the present invention provides a plurality of battery packs comprising at least one secondary battery, and a power supply system capable of supplying an emergency power supply at the time of power failure of the main power supply.

Further, since the battery pack for supplying the emergency power source is easily installed and separated at the time of main power source interruption of the magnetic levitation train, the convenience of the operator, the installation and separation process is simple, and the operation time can be shortened.

1 is a block diagram showing a power system of a magnetic levitation train according to the present invention;
FIG. 2 is a block diagram showing a backup power source in a power supply system of a magnetic levitation train according to the present invention;
3 is a plan view showing a battery box in a power system of a magnetic levitation train according to the present invention,
Fig. 4 is a side view of Fig. 3,
Fig. 5 is a front view of Fig. 3,
FIG. 6 is a perspective view showing the separation support means of the battery box in the power system of the magnetic levitation train according to the present invention. FIG.
FIG. 7 is a flowchart showing a power control method of a magnetic levitation train according to the present invention.

Hereinafter, preferred embodiments of a power system of a magnetic levitation train according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a power supply system of a magnetic levitation train according to the present invention, and FIG. 2 is a block diagram showing a backup power supply in a power supply system of a magnetic levitation train according to the present invention.

1 and 2, a power supply system for a magnetic levitation train according to the present invention includes a train control system 10 for controlling a magnetic levitation train, and a control system 10 for generating a magnetic force under the control of the train control system 10, A main power supply unit 40 for supplying a control power supply and a floatation power supply and a battery pack 53 composed of a plurality of secondary cells to supply power to the main power supply unit 40 A switching unit 30 for switching a power supply line connected to the train control system 10 and the magnetic driving unit 20 from the main power supply unit 40 and the backup power supply unit 50; And a controller 50 for controlling the switching unit 30 so that the backup power source 50 is turned on when an electrostatic detection signal of the electrostatic sensing unit 60 is received, A backup control unit 70 for controlling the power supply to be supplied from the back A display unit 80 for displaying the power supply of the main power supply unit 40 and the supply of the emergency power supply of the backup power supply unit 50 and the charging rate and overheating under the control of the control unit 70, And a vehicle charger 90 for supplying the vehicle.

The train control system 10 is driven by the control power supplied from the main power supply unit 40 to control the magnetic drive unit 20 and the load (for example, door, electric lamp), and the magnetic drive unit 20 A magnetic force is generated by a floating power source supplied from the main power supply unit 40 so that the levitated trains are maintained in a floating state. Since the train control system 10 and the magnetic drive unit 20 correspond to a known configuration of a magnetic levitation train, a detailed description thereof has been omitted.

The switching unit 30 is connected to the power supply line between the train control system 10 and the magnetic drive unit 20 in the main power supply unit 40 and between the train control system 10 and the magnetic drive unit 20 in the backup power supply unit 50, Lt; / RTI > That is, the switching unit 30 conductively connects the power supply line between the train control system 10 and the magnetic drive unit 20 in the main power supply unit 40 at normal times. The switching unit 30 cuts off the power of the main power supply unit 40 under the control of the backup power supply unit 50 during a power failure of the main power supply unit 40, Line to the train control system 10 and the magnetic drive unit 20 so as to be energized.

The electrostatic detecting unit 60 senses a power failure of the power supply line connected to the train control system 10 and the magnetic drive unit 20 in the main power supply unit 40 to apply an electrostatic detection signal to the backup control unit 70 do.

The backup control unit 70 controls the switching unit 30 to backup the power supply line between the train control system 10 and the magnetic drive unit 20 when an electrostatic charge detection signal of the electrostatic charge sensing unit 60 is applied, To be connected to the power supply unit (50).

The backup control unit 70 controls the display unit 80 to display an abnormality of the main power supply unit 40 and to indicate that the control and floating power is supplied to the emergency power supply by the backup power supply unit 50 do.

Further, the backup control unit 70 senses the charging rate of the backup power source unit 50 and displays the charging rate on the display unit 80 when the charging rate is lower than a predetermined charging rate. More preferably, the backup control unit 70 controls the backup battery unit 50 to charge the backup battery unit 50 when the main power unit 40 is normally driven or when the magnetic levitation train is stopped, .

For example, the main power supply unit 40 is supplied with power from an external system connected along a line through the vehicle charger 90 and is charged. As a result, power consumption is reduced when the vehicle is stationary. The backup control unit 70 controls the backup power source unit 50 to connect the vehicle charger 90 to the backup control unit 70 when the backup power source unit 50 is at a preset charging rate, Charging is also possible.

Alternatively, the backup control unit 70 displays a charging device fixed to be connected to the vehicle charger 90 or other external system power source manually by the operator when the charging rate of the backup power source unit 50 is displayed through the display unit 80 And may be connected to the backup power source unit 50 for charging. Which corresponds to any one of a plurality of applications that can be derived through the preferred embodiment of the present invention.

The backup power supply unit 50 supplies the control backup power source and the floating backup power source to the train control system 10 and the magnetic driving unit 20. Here, the backup power source applies a power source (e.g., DC) required in the train control system and a power source (e.g., AC) required in the magnetic drive unit.

To this end, the backup power supply unit 50 includes a plurality of battery packs 53 to which at least one secondary battery is electrically connected, a pack management unit 54 for sensing a charging rate and a temperature of the battery pack 53, And a charging terminal 52 connected to the vehicle charger 90 to supply charging power to the battery pack.

A plurality of the battery packs 53 are connected to each other in series or in parallel and are fixed to the battery box 100 described below. The battery pack and the battery box 100 will be described later with reference to FIGS.

The pack management means 54 senses the charging rate and the temperature of the battery pack 53 and applies the detected charging rate and temperature to the backup control unit. Here, the pack management means 54 includes a temperature sensor for sensing the temperature of the battery pack 53 and a sensor for detecting overvoltage and overcurrent, for example, as a battery management system (BMS) To the backup controller 70 when the voltage and the current meet the set reference.

Particularly, when the over-voltage and over-current are detected in the power supply line connected to the battery pack, the pack management means 54 controls the over-current cut-off device 51 to block the over- And transmits a detection signal.

The overcurrent breaker 51 cuts off the power line connected to the battery pack 53 when the overcurrent flows into the battery charger 90 or other power lines under the control of the pack management means 54. [

The battery pack 53 and the battery box 100 will be described with reference to FIGS. 3 to 6. FIG.

FIG. 3 is a plan view showing a battery box 100 in a power supply system of a magnetic levitation train according to the present invention, FIG. 4 is a side view of FIG. 3, and FIG. 5 is a front view of FIG.

3 to 5, the battery pack 53 is installed and fixed to the battery box 100 fixed in the magnetic levitation train. Here, the battery box 100 may be installed at the lower end of the seat in the passenger compartment, for example, or may be installed in a separate space. The detailed description will be omitted because various applications can be made depending on the designers or the choices of the operators.

A plurality of battery packs 53 are aligned and spaced apart from each other, and are supported and fixed by the battery box 100. The battery pack 53 includes a battery cell 531 connected to be electrically connected to the battery pack 53, a first power cable 531b connected to the power line connected to the switching unit 30, And a bus bar 531a for electrically connecting the battery cells constituting the battery pack 53 to each other.

The bus bars 531a are fixed in series or in parallel between adjacent battery cells 531 so as to be electrically energized with each other.

The first power cables 531b and 531b 'are connected to the negative and positive polarities of the pair of front-end battery packs 53, respectively, as shown in the figure, and extend to the switching unit 30.

The second power cable 531c is fixed between the battery pack 53 and the battery pack 53 so as to be mutually energized.

The battery pack 53 having the above configuration is received and fixed in the battery box 100 and installed in the magnetic levitation train.

The battery box 100 includes a bottom panel 120 extending in a plane and at least one guide means 110 for supporting a battery pack which is spaced apart from the bottom panel 120 and spaced apart from each other, And fixing means 130 and 130 'installed on the bottom panel 120 to fix the battery pack 53 aligned in the longitudinal direction.

The bottom panel 120 is extended in one direction so that one or more battery packs 53 extend transversely and longitudinally.

The guide units 110 are vertically formed between the battery packs arranged so as to be spaced apart from each other in a horizontal direction on the upper surface of the bottom panel 120 so as to be spaced apart from each other. The guide means 110 includes a vertical bar 111 fixed on both sides of the bottom panel 120 and a horizontal bar 112 extending horizontally between the vertical bars 111 on both sides.

The vertical bar 111 is a pair standing upright on both sides of the bottom panel 120. The horizontal bar 112 extends horizontally between the pair of vertical bars 111 and is fixed by a screw-like mechanism.

The vertical bar 111 and the horizontal bar 112 may have a lower height than the battery pack 53 so that the horizontally aligned battery pack 53 can be fixed with a spaced space therebetween. 3 to 5, the guide unit 110 includes a vertical bar 111 and a horizontal bar 112, which are fixed to the front and rear ends of the bottom panel 120, respectively, The horizontal bar 112 is fixed between the battery pack 53 and the battery pack 53 when the battery pack 53 is positioned between the pack 53 and the battery pack 53, Even if it is applied.

As shown in FIG. 6, the fixing means 130 and 130 'include first fixing means 130 and first fixing means 130 which are opposite to each other on both sides of the bottom panel 120 to support different battery packs 53, 2 fixing means 130 'and a spacing support means 140 formed in a U-shape between the first fixing means 130 and the second fixing means 130'.

The first fixing means 130 includes a first fixing plate 131 erected from one side and a first bottom plate 132 extending horizontally from the end of the first fixing plate 131 to form an " And the second fixing means 130 'includes a second fixing plate 131' standing upright from the other side and a second bottom plate 132 'extending horizontally inward from the end of the second fixing plate 131' ') To form an inverted' b 'shape.

That is, the first fixing means 130 supports one side surface and the bottom surface of the first battery pack 53 located at one side of the two battery packs 53 that are spaced apart from each other and aligned in the longitudinal direction, The fixing means 130 and 130 'support the other side surface and the bottom surface of the second battery pack 53 located on the other side.

In addition, the spacing support means 140 may be disposed on the other side of the first battery pack 53 located on one side between the first fixing means 130 and the second fixing means 130 ' A first vertical plate 141 and a second vertical plate 141 'standing upright to support one side of the pack 53, and a lower side of the first vertical plate 141 and the second vertical plate 141' And a horizontal plate 142 horizontally extending from the end and fixed to the upper surface of the support panel.

For example, the first battery pack 53 located at one side of the two battery packs 53, which are spaced apart from each other and arranged in the longitudinal direction among the plurality of battery packs 53, And the first fixing plate 131 is installed on one side and the other side is closely contacted with the first vertical plate 141 of the separation supporting means 140. [

The second battery pack 53 located on the other side is placed on the upper surface of the second bottom plate 132 'so that one side of the second battery pack 53 is in close contact with the second vertical plate 141' And the other side surface of the second fixing plate 131 'is closely contacted.

As described above, in the present invention, the at least one battery pack 53 is fixed between the two battery packs 53 aligned in the longitudinal direction on the upper surface of the bottom panel 120 by the fixing means 130 and 130 ' And the battery packs 53 arranged in the transverse direction, and the guide units 110 are supported to be spaced apart from each other.

Therefore, the battery pack 53 can maintain a fixed state even if vibrations or shocks generated during the operation of the magnetic levitation train occur.

Hereinafter, a method of controlling power of a magnetic levitation train according to the present invention will be described with reference to FIG.

FIG. 7 is a flowchart showing a power control method of a magnetic levitation train according to the present invention.

Referring to FIG. 7, the main power source supplying step S10 for supplying the main power source, the main power source determining step S20 for determining whether the main power source is abnormal, the switching step S30 for switching to supply the emergency power source, A charging rate sensing step S40 for sensing the charging rate of the emergency power source, and an outputting step S50 for displaying the charging rate sensed at the charging rate sensing step S40.

The backup control unit 70 controls the switching unit 30 to supply power to the main power supply unit 40 and the train control system 10 and the magnetic driving unit 20, . The main power supply unit 40 supplies control power to the train control system 10 and supplies the floating power to the magnetic drive unit 20. [

The main power source determination step S20 is a step of determining whether the backup control unit 70 receives the power failure detection signal from the power failure detection unit 60. [ The electrostatic sensing unit 60 senses whether or not the power supply line connected to the train control system 10 and the magnetic drive unit 20 is energized in the main power supply unit 40. Therefore, if the main power unit 40 is not powered on, the electrostatic sensing unit 60 applies the electrostatic sensing signal to the backup control unit 70.

The switching step S30 is a step in which when the backup control unit 70 receives an electrostatic charge sensing signal from the electrostatic charge sensing unit 60, the backup power supply unit 50 supplies the backup control signal to the train control system 10 and the magnetic drive unit 20 And connecting the connected power line to the white power unit. The switching unit 30 cuts off the power supply line connected to the main power supply unit 40 under the control of the backup control unit 70 and disconnects the power supply line connected to the train control system 10 and the magnetic drive unit 20 To the power supply line. Therefore, the train control system 10 and the magnetic driving unit 20 can be operated while maintaining the floating state by the power source applied from the backup power source unit 50.

The battery pack 53 is fixed and supported by the battery box 100 by the fixing means 130 and 130 'and the guide means 110 so that the magnetic packed train can be stopped or stopped, Is fixed without shaking.

In other words, the guide means 110 are spaced apart from each other and are supported between the battery pack 53 and the battery pack 53, so that the battery pack 53 ). The fixing means 130 and 130 'are firmly fixed to both side surfaces of the battery pack 53 in the bottom panel 120 of the battery box 100 so that the fixing state of the battery pack 53 can be maintained .

The charging rate sensing step S40 is a step in which the backup control unit 70 receives the charging rate sensing signal of the battery pack 53 applied from the pack management unit 54. [ The backup control unit 70 compares the charging rate applied from the pack management means 54 with a predetermined charging rate to determine whether the battery pack 53 is charged. In addition, the pack management means 54 senses the temperature and the overcurrent of the battery pack and compares the temperature and the overcurrent with a preset reference value. For example, when the overcurrent and / or overvoltage is detected, the pack management means 54 controls the overcurrent blocker 51 to shut off. Alternatively, the pack management means 54 applies an overheat detection signal to the backup control unit 70 when the temperature of the battery pack is equal to the predetermined overheating temperature.

The output step S50 is a step in which the backup control unit 70 controls the display unit 80 to display the current charging rate of the battery pack 53. [ The backup control unit 70 compares the sensed charge rate with the set charge rate, and if the current charge rate is lower than the set charge rate, the backup control unit 70 outputs a message to the display unit 80 indicating that the charge is required.

The backup control unit 70 controls the vehicle charger 90 to charge the backup power source unit when the main power unit 40 operates normally when the charging rate of the backup power source unit 50 is less than the set charging rate.

The backup control unit 70 checks the temperature of the battery pack 53 supplied from the pack management unit 54 and controls the display unit 80 to set the high temperature state of the battery pack 53 Display and alarm.

The present invention can supply the emergency power source using the battery pack 53 even if a main power source is out of power in the magnetic levitation train so that the floating state of the magnetic levitation train can be maintained even if an abnormal situation occurs, .

The present invention can provide an emergency power source as a plurality of battery packs 53 made up of rechargeable secondary batteries and the guide means 110 and the fixing means 130 and 130 ' So that the battery pack 53 can be firmly fixed from vibration or impact generated during the operation of the magnetic levitation train.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: train control system 20: magnetic drive
30: Switching unit 40:
50: Backup power source unit 51: Overcurrent breaker
52: charging terminal 53: battery pack
54: pack managing means 60:
70: backup control unit 80: display unit
90: vehicle charger 100: battery box
110, 110 ': guide means 111: vertical bar
112: Horizontal bar 120: Floor panel
130: fixing means 131, 131 ': fixing plate
132, 132 ': bottom plate 140: spacing support means
141, 141 ': vertical plate 142: horizontal plate

Claims (7)

A main power supply unit for supplying control and floating power for the magnetic levitation train;
An electrostatic charge sensing unit for sensing a power failure of the main power supply unit;
A backup power source for supplying an emergency power source when the power failure of the main power source unit is detected by the power failure detection unit;
A backup control unit for controlling the supply of the emergency power from the backup power unit when the battery pack comprises a battery pack including a plurality of secondary battery cells housed in the battery box, And
And a switching unit for switching a power supply line between the main power supply unit and the backup power supply unit under the control of the backup control unit,
The battery box
A battery panel in which the battery pack is aligned in the longitudinal direction and in the longitudinal direction on an upper surface thereof;
At least one guide means for supporting the battery packs horizontally extended and fixed horizontally at upper ends of the vertical bars so as to be spaced apart from each other; And
A first fixing means for fixing one of the at least one battery pack in the longitudinal direction on the upper surface of the battery panel, a second fixing means for fixing the other side battery pack, And a separating and supporting means for supporting the battery pack on one side and the other side of the battery pack.
The plasma display apparatus of claim 1, wherein the backup power source unit
A pack management means for sensing a charging rate, an overcurrent and a temperature of the battery pack; And
And an overcurrent breaker for blocking an overcurrent when the overcurrent is detected in a power supply line connected to the battery pack under the control of the pack management means.
2. The magnetic levitation train of claim 1,
And a vehicle charger that charges the battery pack.
2. The magnetic levitation train of claim 1,
And a display unit for displaying a charging rate and a temperature of the battery pack.
delete The battery pack according to claim 1, wherein the first fixing means comprises: a first fixing plate erected to be in close contact with one side surface of the one side battery pack; And a first bottom plate horizontally extending from an end of the first fixing plate to the other side,
The second fixing means may include a second fixing plate erected so as to be in close contact with the other side surface of the other side battery pack; And a second bottom plate extending horizontally to one side from an end of the second fixing plate.
The apparatus according to claim 1, wherein the spacing support means
A first vertical plate which is erected on both sides and is in close contact with the other side surface of the one side battery pack, and a second vertical plate which is closely attached to one side surface of the other side battery pack; And a horizontal plate horizontally connected to the first vertical plate and a second vertical plate below the first vertical plate and the second vertical plate.

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