KR101465534B1 - Storage battery monitoring system for railway vehicles and the railway vehicles - Google Patents

Abstract

The present invention relates to a railway vehicle battery monitoring system and a railway vehicle thereof, and more particularly, to a railway vehicle battery monitoring system and a railway vehicle thereof, which are capable of monitoring and checking the state of a battery of a railway vehicle in real time in a driver's cab, A railway vehicle battery monitoring system and a railway vehicle thereof.
A railway vehicle battery monitoring system according to the present invention comprises: a storage battery pack installed in a lower portion of a railway vehicle and having a plurality of battery cells connected in series; a storage battery control unit for collecting temperature, voltage and current status of the storage battery pack, And a monitor device provided in a cab of the railway vehicle for displaying the state of the battery pack output from the battery control module.

Description

{STORAGE BATTERY MONITORING SYSTEM FOR RAILWAY VEHICLES AND THE RAILWAY VEHICLES}

The present invention relates to a railway vehicle battery monitoring system and a railway vehicle thereof, and more particularly, to a railway vehicle battery monitoring system and a railway vehicle thereof, which are capable of monitoring and checking the state of a battery of a railway vehicle in real time in a driver's cab, A railway vehicle battery monitoring system and a railway vehicle thereof.

Generally, a main power source device for driving a railway vehicle by a power source device of a railway car and an auxiliary power source device for driving various electromagnetic devices provided in the car by converting power supplied from the main power source device are provided.

The auxiliary power supply unit includes a converter for converting the power supplied from the main power supply unit to DC and a battery for temporarily storing the converted DC, and the battery includes a lead acid battery, a nickel-cadmium battery, a nickel- A battery or the like is used.

The main power unit converts the high-voltage AC power applied to the railway vehicle through the panda graph of the railway vehicle into a low-voltage AC that can be used in the railway vehicle, and supplies the motor and auxiliary power unit driving the railway vehicle.

The auxiliary power supply unit rectifies and reduces the AC power of several hundred V to several thousands V, converts it into DC power of several tens V to several hundred V, and supplies it to each electronic device in the car.

In such an auxiliary power supply unit, a charger for charging the battery is provided in order to stabilize the auxiliary power supply voltage of DC.

The charger charges the battery by DC power converted to DC, and when the voltage of the DC is insufficient or unstable after charging, the charged power is supplied to stabilize the power.

1 is a conceptual diagram of a battery and charger installation of a general railway vehicle.

As shown in Fig. 1, the above-described storage battery 3 and the charger 2 are installed in the railway car 1. Fig.

The battery 3 is generally selected in consideration of the entire DC power source emergency load of the railway car 1, and two sets and four sets of the batteries 3 are provided in the knitting area in the lower portion of the vehicle according to the capacity.

The charger 2 is connected as a part of the high-pressure apparatus by communication, and a status is displayed on a display unit inside the cabin.

For example, prior art Patent Registration No. 10-0651191 discloses a battery charger diagnostic system for an electric railway vehicle.

This prior art patent discloses a relay contact signal detector for detecting contact signal voltages of various relays; A DC / DC converter for converting driving and braking voltages output from the DC voltage, the VCB state, and the intermittent input / output signal voltage into another DC voltage; A catenary voltage detecting unit for detecting a voltage from the catenary; A catenary current detector for detecting a current flowing in the catenary; A power analyzer for analyzing power consumption, power factor, rms value and harmonic content; A first A / D converter for converting analog power information into a digital signal; A speed sensor for generating a pulse signal corresponding to the number of revolutions of the wheel of the railway vehicle during traveling; A frequency / voltage converter for converting a frequency to a voltage; A second A / D converter for converting an analog speed voltage into a digital signal; A vehicle speed detecting section for detecting a current running speed of the vehicle; A counter for counting pulses detected through the speed sensor; A position information detecting unit for calculating a traveling distance of the railway car in comparison with the number of pulses; A battery charger voltage detector; A battery charger current detector; A signal converter for converting a charging voltage and a current of the battery into a DC voltage that can be recognized by a computer; The output signal of each of the above-mentioned units is received and stored in real time, and at the same time, the information on the speed, position, wire voltage and various relays at the time of occurrence of a failure in the specific battery charger, Lt; / RTI >

According to this prior patent, the current and voltage signals of the battery charger during running of the electric railway vehicle can be grasped and analyzed at the same time with information on the line condition and the dune, the power supply state and the speed and position information. Analysis of faults can be done more accurately.

As described above, the state of the battery charger can be confirmed in the cab, but the state of the battery can not be confirmed in the cab.

That is, in the case of the battery, the battery is not monitored in real time because the battery is fully charged and the charger continues to charge the battery during operation to maintain the full charge state during operation.

However, in the event of a rail vehicle failure such as a charger failure, the battery must meet the DC power consumption capacity for 1 hour under the emergency load condition, and there is a problem that it is unknown how much emergency power remains for 1 hour.

Registration No. 20-0342193 (Announcement date February 18, 2004) Registration No. 10-0651191 (Publication Date November 30, 2006)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-described problems, and it is an object of the present invention to provide a monitoring device provided in a cab for a driver and a crew to check the status of a battery in real time, And to provide a railway vehicle battery monitoring system and a railway vehicle capable of coping with such problems.

According to an aspect of the present invention, there is provided a railway vehicle battery monitoring system comprising: a storage battery pack installed in a lower portion of a railway vehicle and having a plurality of battery cells connected in series;

A battery control module for collecting the temperature, voltage and current state of the battery pack and outputting the collected data through a network; And

A monitor device provided in a cabin of the railway vehicle for displaying the state of the battery pack output from the battery control module; .

Here, the battery control module includes:

The temperature of the battery pack is measured by a temperature measuring unit,

A voltage measuring unit for measuring a voltage of the battery pack;

A current measuring unit for measuring a current through a shunt resistor connected to one side of the battery pack,

And a controller for comparing the temperature, the voltage, and the current with the first reference value to control the FET block connected to the shunt resistor to be OFF when the overtemperature, the overvoltage, the undervoltage, or the overcurrent, do.

The battery control module may further include:

It measures the current through the shunt resistor, measures the voltage of the battery pack, compares it with each second reference value, and controls the FET block connected to the shunt resistor to be turned off in the case of overvoltage, undervoltage or overcurrent, 2 protection unit.

The battery control module may further include:

And a cell balancing unit for performing cell balancing under the control of the control unit when the remaining charge amount of the plurality of battery cells is not uniform.

Here, the battery control module and the monitor device are connected by a TCN-MVB (Multi-Function Vehicle Bus) communication method.

Here, the battery pack and the battery control module are each formed as a box-shaped box and are connected through a cable.

In addition, an operation unit for controlling the power of the battery pack is provided on a front surface of the battery control module, and a display unit for indicating the state of the battery pack.

The railway vehicle according to the present invention comprises any one of the above-described battery monitoring systems.

According to the means for solving the above-mentioned problems, it is possible to easily display the state of the accumulator of the railway car, so that the safety of the vehicle operation can be improved by monitoring the battery power in real time during the vehicle operation, Can be provided.

1 is a conceptual diagram of a battery and charger installation of a general railway vehicle.
2 is an internal circuit diagram of a battery control module according to the present invention.
3 is a perspective view showing the outer shape of the battery shown in Fig.
4 is an in-vehicle wiring diagram of the battery control module shown in Fig.
Fig. 5 is an exemplary view showing the installation of the display unit shown in Fig. 4. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

It is to be noted that the same components of the drawings are denoted by the same reference numerals and symbols as possible even if they are shown in different drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

FIG. 2 is an internal circuit diagram of a battery control module according to the present invention, and FIG. 3 is a perspective view showing the external shape of the battery shown in FIG.

As shown in FIG. 2, the battery according to the present invention includes a battery pack 10 and a battery control module 20.

The battery pack 10 includes a plurality of battery cells 10a connected in series. The battery pack 10 is charged with DC power converted into a direct current by a charger (not shown) and charged with 2-4 Respectively.

An FET block 12 and a shunt resistor 11 are connected to one end of the battery pack 10 at the plus and minus ends thereof.

The FET block 12 is turned on / off under the control of the battery control module 20, and the shunt resistor 11 is used to measure the amount of current as a kind of shunt resistor.

The battery control module 20 for measuring the state of the battery pack 10 and outputting it to the outside includes a control unit 21, a second protection unit 22, a voltage measurement unit 23, a cell balancing unit 24, A measurement unit 25 and a current measurement unit 26. [

The current measuring unit 26 measures the voltage across the resistor using the shunt resistor 11 and converts it into a current amount by calculating the current according to the Ohm's law and outputs the current amount (discharge) to the control unit 21. [

The voltage measuring unit 23 measures the voltage (charge) of the battery pack 10 including the voltage of each battery cell 10a and outputs the measured voltage to the control unit 21. [

On the other hand, as the number of the battery cells 10a provided in the battery pack 10 are repeatedly charged and discharged, the remaining charge amount of the battery cells 10a becomes uneven. At this time, Condition is established and the remaining battery cells are not fully charged.

In order to solve this problem, the cell balancing unit 24 measures the voltage (charge) of the battery pack 10 including the voltage of each battery cell 10a to measure the energy of the battery cell, The cell balancing is performed in such a manner that the remaining charge amounts of the battery cells are matched with each other.

The temperature measuring unit 25 measures the temperature around the battery pack 10 and outputs the measured temperature to the control unit 21.

The second protection unit 22 measures the current (discharge) through the shunt resistor 11 and measures the voltage (charge) of the battery pack 10 and compares it with each reference value to determine whether the overcharge, By controlling the block 12, one end of the storage battery pack 10 is turned OFF to protect the storage battery pack 10 secondarily.

The control unit 21 receives temperature, voltage (charge) and current (discharge) through the temperature measuring unit 25, the voltage measuring unit 23 and the current measuring unit 26, the battery pack 10 is turned off by controlling the FET block 12 when the battery pack 10 is overtemperature, overvoltage, undervoltage, or overcurrent, Protect by car.

In addition, the controller 21 outputs the state of the battery pack 10 such as temperature, voltage, and current to the outside.

The control unit 21 outputs a control signal to the cell balancing unit 24 through the voltage measurement unit 23 to control cell balancing.

As shown in FIG. 3, the battery pack 10 and the battery control module 20 are electrically connected to each other through a cable 30.

The battery control module 20 is provided with a control unit 27 for controlling the power source of the battery pack and a display unit 28 for indicating the state of the battery.

4 is an in-vehicle wiring diagram of the battery control module shown in Fig.

In general, train vehicles are equipped with a train diagnostic and control system (TDCS) for overall train control.

A central control unit (CCU) is provided in the train cars Tc and Mc with the train diagnostic control unit TDCS as shown in FIG. 4, (Vehicle Control Unit), and a monitor unit (DU) (Display Unit) for monitoring the status of the TDCS is installed in the cab.

The CCU and the VCU are connected by a TCN-WTB (Wire Train Bus) communication method, and are controlled by TCN-MVB (Multi-function Vehicle Bus) for each subcarrier.

The CCU controls the subordinate device of the power train (Tc, Mc) and the main function of the VCU. The VCU controls the subordinate device of the carriage (M1, M2, M3.M4) by the command received from the CCU. Take action and pass the fault information to the CCU.

In the present invention, not only the charger 51 but also the storage battery 52 are connected to the CCU and the monitoring devices DU1 and DU2 of the cab by a TCN-MVB communication method as a lower device of the power cars Tc and Mc.

Here, the battery 52 may include the battery pack 10 and the battery control module 20 shown in FIG.

The state of the battery 52 of the battery 52, the remaining battery level, the temperature state, the discharge current of the battery, and the like are displayed on the monitor devices DU1 and DU2 and not only the state of the charger 51, Can be checked in real time.

Fig. 5 is an exemplary view showing the installation of the display unit shown in Fig. 4. Fig.

5, the control unit 40 of the cab is provided with a day / night controller 41, a brake controller 42, a broadcasting device 113, monitor devices DU1 and DU2, A control unit frame 47 provided with other devices and operation switches.

Particularly, the monitor devices DU1 and DU2 are provided on the left and right sides of the control frame 47 to facilitate identification of the driver.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

10: Battery pack 11: Shunt resistance
12: FET block 20: battery control module
21: control unit 22: second protection unit
23: voltage measuring unit 24: cell balancing unit
25: temperature measuring unit 26: current measuring unit
40: control stand 51: charger
52: Battery DU1, DU2: Monitor device

Claims (8)

A battery pack installed at a lower portion of a railway vehicle and having a plurality of battery cells connected in series;
A battery control module for collecting the temperature, voltage and current state of the battery pack and outputting the collected data through a network; And
A monitor device provided in a cabin of the railway vehicle for displaying the state of the battery pack output from the battery control module; Lt; / RTI >
The battery control module includes:
A temperature measuring unit for measuring a temperature of the battery pack;
A voltage measuring unit for measuring a voltage of the battery pack;
A current measuring unit for measuring a current through a shunt resistor connected to one side of the battery pack,
A control unit for firstly protecting the battery pack by controlling the FET block connected to the shunt resistor to be OFF when the temperature, the voltage, and the current are compared with each first reference value to determine over-temperature, over-voltage, undervoltage,
The current is measured through the shunt resistor and the voltage of the battery pack is measured and compared with each second reference value to control the FET block connected to the shunt resistor to be OFF when the battery is over-voltage, undervoltage or over-current, And a second protection unit (20). delete delete The method according to claim 1,
The battery control module includes:
Further comprising a cell balancing unit for performing cell balancing under the control of the control unit when the remaining charge amounts of the plurality of battery cells are not uniform. The method according to claim 1,
Wherein the battery control module and the monitor device are connected by a TCN-MVB (Multi-Function Vehicle Bus) communication system. The method according to claim 1,
Wherein the battery pack and the battery control module are each formed as a box-shaped box and connected through a cable. The method according to claim 6,
Wherein the battery pack control module includes an operating unit for controlling power of the battery pack, and a display unit for displaying the condition of the battery pack. A railway vehicle comprising the battery monitoring system according to any one of claims 1 to 7.

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