JP6491967B2 - Charge control device for hybrid railway vehicle - Google Patents

Description

  The present invention relates to a charging control device that controls charging of a hybrid railway vehicle including an engine, a motor, and a storage battery.

There has been a hybrid railway vehicle (see, for example, Prior Art Document 1) that has been provided with an engine, a generator, a motor, and a storage battery. A hybrid railway vehicle is mainly equipped with a series-type hybrid system, which generates electric power by an engine and a generator and drives the motor with this electric power to run or temporarily accumulates electric power in a storage battery. Drive the motor with electric power to run.
Many of such hybrid railway vehicles start the engine using the power of the storage battery. In such a vehicle, when the remaining charge of the storage battery is exhausted, the engine cannot be started even if fuel remains, and the vehicle cannot run. In this case, it is necessary to charge the storage battery using an external power source.

  In hybrid railway vehicles, the structure of a drive system such as an engine, a generator, and a motor is arranged at the lower part of the vehicle, and a storage battery is often arranged on the roof. Moreover, as a storage battery, the structure by which the some battery module was connected in series so that the output of large electric power is possible is employ | adopted.

JP 2013-209095 A

Conventionally, charging of a storage battery provided in a hybrid railway vehicle is generally performed by connecting a charging cable to each battery module constituting the storage battery installed on the roof and charging one battery module at a time. Therefore, it is difficult to set up charging in a place where a scaffold for reaching the storage battery cannot be provided. Further, in this method, in order to connect the charging cable to each battery module, it is necessary to remove the side wall of the storage battery box that houses the storage battery and the exterior of the storage battery, and until the charging of the plurality of battery modules is completed, It was necessary to reconnect the charging cable many times. Moreover, since the battery module is directly charged with a bare battery module, it is necessary to perform advanced operations such as controlling the charging current while monitoring the state of the battery module.
An object of the present invention is to provide a charging control device for a hybrid railway vehicle that can easily charge a storage battery of the hybrid railway vehicle from outside the hybrid system.

The present invention has been made to achieve the above object,
An engine, a generator that converts engine power into electric power, a converter that converts the output voltage of the generator into DC voltage, a storage battery that stores electric power, an electric motor that drives a wheel shaft by electric power, and a DC voltage An inverter that converts the voltage into an AC voltage and outputs it to the electric motor, and the storage battery is electrically connected to an intermediate node between the converter and the inverter via a power line and a contactor that disconnects the power line. A charging control device in a connected hybrid railway vehicle,
A charging cable electrically connected to the node between the converter and the inverter;
A current output unit for supplying a charging current to the charging cable using an external power source; and
A low voltage cable electrically connected to the wiring of the contactor;
When outputting the charging current, a control unit that outputs a control signal for closing the connection of the contactor via the low-voltage cable;
It is characterized by having.

  According to this configuration, the connection destination of the charging cable is an intermediate node between the converter and the inverter arranged at the lower part of the vehicle in many hybrid railway vehicles, so that the charging cable can be easily connected. On the other hand, when the connection destination of the charging cable is set to a node between the converter and the inverter, if the contactor provided between the node and the storage battery cuts off the power line, power is supplied to the storage battery. I can't send it. However, according to said structure, a control part can output a control signal via a low voltage | pressure cable, and can close the connection of a contactor. Accordingly, the storage battery can be charged by sending a current from the charging cable while adopting a configuration in which the charging cable can be easily connected.

Preferably, a first disconnector capable of electrically disconnecting the converter and the intermediate node between the converter and the inverter, and electrically disconnecting the inverter and the intermediate node A possible second disconnector is provided,
One end of the charging cable is connected to a conductive portion between the first disconnector and the second disconnector in a disconnector box in which the first disconnector and the second disconnector are accommodated. It is good that it is set as follows.
According to this configuration, the connection destination of the charging cable is set in the conductive portion between the first disconnector and the second disconnector in the disconnector box. Therefore, by connecting the charging cable with the first disconnector and the second disconnector being disconnected, the charging cable can be connected with the converter and the inverter disconnected. Therefore, the charging cable can be easily connected regardless of the state of the converter or the inverter. Therefore, the preparatory work for charging the storage battery can be easily performed.

Preferably, the hybrid railway vehicle is provided with a battery controller that monitors the storage battery and notifies a monitoring result to the outside.
The control unit may be configured to communicate with the battery controller via the low-voltage cable and control charging of the storage battery based on a monitoring result of the battery controller.
According to this configuration, the charging control of the storage battery can be performed using the monitoring result of the battery controller of the hybrid railway vehicle. Therefore, the storage battery can be charged using a general control method without providing a sensor or the like for detecting the state of the storage battery in the charge control device itself. Moreover, even when the storage battery has a configuration in which a plurality of battery modules are connected in series, these can be charged together based on monitoring by the battery controller.

More preferably, power is supplied to the battery controller via the low-voltage cable.
According to this configuration, charging can be performed while communicating with the battery controller by the power from the charging control device even when the power of the battery controller is not supplied from the hybrid railway vehicle.

In addition, preferably, an operation unit capable of setting a charge amount at the time of completion of charging is provided
The said control part is good to comprise so that the charge of the said storage battery may be complete | finished according to the charge amount set by operation of the said operation part.
When the remaining amount of fuel is sufficient, the hybrid railcar can drive and charge the storage battery by driving the engine as long as the amount of electric power for starting the engine is charged. So, according to said structure, charge can be complete | finished with the desired charge amount by the setting of an operation part. As a result, when a small amount of charge is sufficient, it is possible to avoid excessive charging and to quickly recover the hybrid railway vehicle.
Here, the amount of charge may be set by, for example, the charging rate, or may be set by the charging voltage.

Preferably, in the above charging control device for controlling charging to a hybrid railway vehicle in which the storage battery and the contactor are provided in a plurality of systems,
A charging system operation unit that can be set or set to charge any one of the plurality of storage batteries or any of the plurality of storage batteries,
The controller may be configured to close the connection of the contactor of the system set to perform charging when outputting the charging current.
According to this configuration, in the case of a hybrid railway vehicle having a plurality of storage batteries, if the output capacity of the external power supply is insufficient with respect to the charging current of the storage batteries of all systems, the charging rate of the storage battery differs for each system. The storage battery to be charged can be switched in response to various cases, such as when it is desired to charge a large number of storage batteries of a system, or when there is an abnormality in any of the storage batteries and it is desired to avoid charging them.

  According to the charge control device of the present invention, it is possible to easily charge the storage battery of the hybrid railway vehicle from outside the hybrid system.

It is a figure which shows the state which connected the charge control apparatus which concerns on embodiment of this invention to the rail vehicle. It is a figure explaining the internal structure of the charge control apparatus which concerns on embodiment of this invention. It is a front view which shows a detailed example of an instruction | indication controller.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a state in which a charging control apparatus according to an embodiment of the present invention is connected to a railway vehicle.
The charging control apparatus 1 according to the embodiment of the present invention is an apparatus that performs charging control when charging the storage batteries 110 and 111 of the hybrid railway vehicle 100 using an external power source E0.
First, the hybrid railway vehicle 100 will be described.

  The hybrid railway vehicle 100 includes an engine 101 that generates power by burning fuel, a generator 102 that converts the power of the engine 101 into electric power, a converter 103 that converts an output voltage of the generator 102 into a DC voltage, A wheel shaft 104 that rotates a wheel for traveling, an electric motor 105 that rotationally drives the wheel shaft 104, an inverter 106 that generates an AC voltage for driving the electric motor 105 from a DC voltage, battery units 107 and 108 that store electric power, And a non-contact control device 130 that performs control such as switching of the flow of electric power when the vehicle is running.

  According to hybrid railway vehicle 100 having such a configuration, electric power is generated by generator 102 by driving engine 101, and this is converted into a DC voltage by converter 103. This DC voltage is output to the inverter 106 under the control of the non-contact control device 130 and the vehicle is driven by driving the electric motor 105. Alternatively, the direct current voltage is sent to the battery units 107 and 108, and the storage batteries 110 and 111 are charged. Further, when the vehicle is running, during the period when the generated power due to the driving of the engine 101 is insufficient, the DC voltage of the battery units 107 and 108 is output to the inverter 106 and replenished by the control of the non-contact control device 130 or the like. The Alternatively, during driving of the vehicle, during the period when the driving efficiency of the engine 101 is low, the driving of the engine 101 is stopped by the control of the non-contact control device 130 and the DC voltage of the battery units 107 and 108 is changed to the inverter 106. The vehicle travels by driving the electric motor 105.

The battery units 107 and 108 include storage batteries 110 and 111 in which a plurality of battery modules are connected in series (or series and parallel), and battery controllers 112 and 113 that monitor the battery states of the storage batteries 110 and 111. . The battery state described above includes various battery states necessary for charge control of the storage batteries 110 and 111, such as the temperature, output voltage, charging / discharging current, charging rate, and voltage balance between the battery modules. It is out. During normal times when the charge control device 1 is not connected, the battery controllers 112 and 113 transmit information used for charge control to the contactless control device 130.
The hybrid railway vehicle 100 of this embodiment is provided with two battery units 107 and 108.

The hybrid railway vehicle 100 further includes various electric facilities (loads) 121 such as an air conditioner and an open / close door, and a static inverter 122 that supplies electric power to the electric facilities 121 via the transformer IvTR. ing.
Furthermore, the hybrid railway vehicle 100 includes various switches for controlling the flow of power between the converter 103, the inverter 106, and the battery units 107 and 108. A power line through which power is input / output to / from the battery units 107, 108, a power line through which the power of the converter 103 is supplied, and a power line through which power is supplied to the inverter 106 intersect at the node P0. Switches LB3 and LB4 that connect and disconnect the power lines are provided between the converter 103 and the node P0. Switches LB1 and LB2 for connecting and disconnecting the power lines are provided between the inverter 106 and the node P0. Between the node P0 and the battery units 107 and 108, contactors LB5 and LB6 for connecting and disconnecting power lines and transistor switches BTr1 and BTr2 are provided. The switches LB1 to LB4, the contactors LB5 and LB6, and the transistor switches BTr1 and BTr2 are opened and closed by the control of the non-contact control device 130 or the like while the hybrid railway vehicle 100 is running. Thereby, the operation of the hybrid system described above is realized.

Two contactors LB5 and LB6 and transistor switches BTr1 and BTr2 are provided corresponding to the two battery units 107 and 108, respectively.
Furthermore, the hybrid railway vehicle 100 includes disconnectors BCS11, BCS12, BCS21, and BCS22 for disconnecting the battery units 107 and 108 from the power line. Also, between the converter 103 and the inverter 106, disconnectors MS1 and MS2 are provided for disconnecting the converter 103 and the inverter 106 from the power lines of the battery units 107 and 108, respectively. A disconnector BS for disconnecting the static inverter 122 is also provided. These disconnectors BCS 11, BCS 12, BCS 21, BCS 22, MS 1, MS 2, BS are devices that can be manually opened and closed by an operator during maintenance and the like, and disconnector boxes 114, 115 fixed to the vehicle body of the hybrid railway vehicle 100. , 116, 117.

In addition, around the converter 103, the inverter 106, and the static inverter 122, there are discharge circuits D1, D2, and D3 for discharging these residual charges, and charging resistors CHRe1 and CHRe2 for suppressing inrush current, respectively. Is provided.
Among the components of the hybrid system of the hybrid railway vehicle 100, the converter 103, the inverter 106, the disconnector box 116, the stationary inverter 122, the non-contact control device 130, and the contactors LB5 and LB6 are arranged at the lower part of the vehicle. ing. These configurations are referred to as a main conversion device 120. Battery units 107 and 108 and disconnector boxes 114 and 115 are arranged on the roof of hybrid railway vehicle 100.

Next, the structure which charges the storage batteries 110 and 111 using the external power supply E0 to such a hybrid rail vehicle 100 is demonstrated.
FIG. 2 is a diagram illustrating the internal configuration of the charging control apparatus according to the embodiment of the present invention.
In the present embodiment, the configuration for charging hybrid railway vehicle 100 includes power supply device 2 and charge control device 1.
The power supply device 2 generates a DC high voltage for charging from an external power source E0 such as AC 100V.
The charging control device 1 is connected to the hybrid railway vehicle 100 via the charging cable 3 and the low-voltage cable 4 and performs charging control of the storage batteries 110 and 111. The low voltage cable 4 may be divided into a plurality of cables.

  The low-voltage cable 4 is connected to, for example, a connector provided in the main converter 120, supplies a control voltage and a power supply voltage to necessary places, and transmits a communication signal from the battery controllers 112 and 113. . The power supply voltage is supplied to the fan power supplies f1 and f2 of the battery units 107 and 108 and the battery controllers 112 and 113 via the power supply line h1 of the main converter 120, for example. The control voltage is supplied to the coils M5 and M6 (see FIG. 1) that connect the contactors LB5 and LB6 via the output lines h2 and h3 of the contactless control device 130. The communication signals of the battery controllers 112 and 113 are acquired from the communication lines h4 and h5 that connect the contactless control device 130 and the battery controllers 112 and 113.

The charging cables 3 and 3 are cables that output a high DC voltage supplied from the power supply device 2 to charge the storage batteries 110 and 111.
As shown in FIGS. 1 and 2, the anode side of the two charging cables 3 and 3 is intermediate between the converter 103 and the inverter 106, more specifically, the two disconnectors MS1 in the disconnector box 116. , MS2 is electrically connected to an intermediate node. The charging cable 3 is connected to an intermediate conductive portion between the two disconnectors MS1 and MS2 through, for example, a connection clip.
The cathode side of the two charging cables 3 and 3 is connected to the power line of the disconnector box 115 or the vehicle body ground as shown in FIGS.

As shown in FIG. 2, the charging control device 1 includes a low-voltage power supply device 11, an operation switch 12 and a display lamp 13, an indicating controller 14, a control unit 17, a DC voltage detection unit 18, and switches SW1 and SW2. Etc.
The low-voltage power supply device 11 generates operating power supplies for the battery controllers 112 and 113 of the battery units 107 and 108 and the power supplies f1 and f2 for the fans together with the operating voltages of the respective blocks of the charging control device 1.

The operation switch 12 is, for example, a selection switch (charging system operation) for switching an external power source E0 switch, a high voltage power source output switch, a charging target to the first system battery unit 107, the second system battery unit 108, or both. Equivalent). The switch SW1 is opened and closed by switching the input switch of the external power supply E0, and the switch SW2 is opened and closed by switching the output switch of the high-voltage power supply. In the present embodiment, the output side of the switch SW2 is a current output unit that outputs a charging current.
The display lamp 13 displays the switching status of the operation switch 12.

The instruction controller 14 includes an operation unit 15 that can set a charging rate when charging is complete, and a display 16 that displays a current charging rate, an output voltage, and the like.
FIG. 3 is a front view showing a detailed example of the indicating controller 14.
For example, as shown in FIG. 3, the display 16 can employ a configuration including a main display unit 16 a that displays a charging rate and a sub display unit 16 b that displays an output voltage. For example, the operation unit 15 may have a configuration including a selection key 15a for selecting setting contents and an up / down key 15b for changing the value of the charging rate at the completion of charging.

The control unit 17 is mainly configured to control charging according to the operation switch 12, control to stop charging through communication with the battery controllers 112 and 113, setting processing based on a signal from the operation unit 15, and display 16 display processes.
Specifically, the control unit 17 closes the contactor LB5 when the charging of the battery unit 107 of the first system is selected by switching the system to be charged by the operation switch 12, and the contactor LB5 is closed. A signal for switching the connection of LB6 to open is output. On the other hand, when charging of the battery unit 108 of the second system is selected, a signal for closing the connection of the contactor LB6 and opening the connection of the contactor LB5 is output. Moreover, if both are selected, the signal which switches both connection of contactor LB5, LB6 to a close will be output. Thus, the battery units 107 and 108 to be charged that output the charging current are switched.

The control unit 17 holds this value when the operation unit 15 sets the charging rate at the end of charging.
The controller 17 inputs various types of monitoring information from the battery controllers 112 and 113 during the charging operation, and outputs an operation stop (OFF) signal to the power supply device 2 when an abnormality occurs in the storage batteries 110 and 111 for charging. Stop. In addition, the control unit 17 inputs information on the charging rate from the battery controllers 112 and 113 and displays this value on the display 16. Further, when the charging rate value reaches a preset charging rate at the end of charging, an operation stop (OFF) signal is output to the power supply device 2 to stop charging.
The DC voltage detector 18 detects the output voltage of the power supply device 2 and outputs this value to the display 16.

<Charging operation>
Subsequently, the charging operation will be described.
It is assumed that the remaining amount of charge of the storage batteries 110 and 111 becomes low and the engine 101 cannot be started for some reason while the hybrid railway vehicle 100 is stopped or traveling.
In such a case, the restoration person of the hybrid railway vehicle 100 first carries the charging control device 1 and the power supply device 2 to the vicinity of the hybrid railway vehicle 100 and connects them to the external power supply E0 prepared on the route.

  Next, the restoration worker connects one end of the charging cable 3 to the designated conductive portion of the disconnector box 116 and connects the other end of the charging cable 3 to the disconnector box 115 or the vehicle body ground. At this time, the disconnectors MS1 and MS2 of the disconnector box 116 are preferably opened. The restoration worker connects the low-voltage cable 4 to the main converter 120 via a connector. Most of these connection destinations are arranged in the lower part of the vehicle, so that the restoration worker can easily perform the connection process.

  In addition, the restoration worker operates the operation unit 15 of the charging control device 1 to appropriately set the charging rate at the completion of charging. If the remaining amount of fuel is present and the engine 101 can be started and the hybrid system can be restored, for example, a low charging rate is set. Thereby, the time for charging can be shortened, and the restoration work can be completed promptly. If necessary, the restoration worker operates the operation switch 12 to select the battery units 107 and 108 to be charged. Here, a case will be described in which both battery units 107 and 108 are selected as charging targets.

  When these settings and selections are made, the control unit 17 outputs a control voltage to the contactors LB5 and LB6 of the system selected as the charging target via the low voltage cable 4. Thereby, the connection of the contactors LB5 and LB6 of the selected system is closed. Furthermore, even when the power supply voltage is not supplied to the battery units 107 and 108 due to the connection of the low voltage cable 4, the power supply voltage is supplied from the low voltage power supply device 11 of the charging control device 1 to the battery units 107 and 108. As a result, the fan power supplies f1 and f2 and the battery controllers 112 and 113 are activated.

  Subsequently, the restoration worker operates the operation switch 12 of the charging control device 1 to start charging. Thereby, electric current is supplied to the storage batteries 110 and 111 to be charged through the contactors LB5 and LB6 that are closed from the node P0 of the main converter 120 via the charging cable 3, and charging is performed. In addition, the battery controllers 112 and 113 monitor the state of the storage batteries 110 and 111 during charging and notify the control unit 17 of the charging control device 1 of the monitoring result via the low-voltage cable 4.

  When the charging progresses and the charging rate of the storage batteries 110 and 111 to be charged reaches the set value, the control unit 17 of the charging control device 1 recognizes this by the notification of the battery controllers 112 and 113, and the power supply device 2. Outputs a signal (OFF) for stopping the voltage output. Thereby, charge is complete | finished. When the charging is finished, the control unit 17 may stop the output of the control voltage to the contactors LB5 and LB6 and the power supply from the low voltage power supply device 11 to the battery units 107 and 108.

Thereafter, the restoration worker removes the charging cable 3 and the low-voltage cable 4 from the hybrid railway vehicle 100 to complete the restoration process.
By such a restoration process, necessary electric power is stored in the storage batteries 110 and 111, so that the hybrid railway vehicle 100 can start normal operation by, for example, starting the engine 101 using this electric power.

  As described above, according to the charging control apparatus of this embodiment, the connection destination of the charging cable 3 is a node node P0 between the converter 103 and the inverter 106 arranged at the lower part of many hybrid railway vehicles. Is set to For this reason, the connection of the charging cable 3 becomes easy. On the other hand, when the connection destination of the charging cable 3 is set to the intermediate node P0 between the converter 103 and the inverter 106, the contactors LB5 and LB6 provided between the node P0 and the storage batteries 110 and 111 cut off the power line. If it is, power cannot be sent to the storage batteries 110 and 111. However, according to said structure, the control part 17 outputs a control voltage via the low voltage | pressure cable 4, and closes the connection of contactor LB5, LB6. Therefore, it is possible to charge the storage batteries 110 and 111 by sending current from the charging cable 3 while adopting a configuration in which the charging cable 3 can be easily connected. Therefore, according to the charging control device 1 of the present embodiment, the storage batteries 110 and 111 of the hybrid railway vehicle 100 can be easily charged.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, in the above-described embodiment, an example in which the power supply device 2 and the charging control device 1 are separately configured has been shown, but these may be integrated. In addition, the details shown in the embodiments can be changed as appropriate without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Charging control apparatus 2 Power supply apparatus 3 Charging cable 4 Low voltage cable 11 Low voltage power supply apparatus 12 Operation switch (charging system operation part)
DESCRIPTION OF SYMBOLS 13 Indicator lamp 14 Indicator adjuster 15 Operation part 16 Display part 17 Control part 18 DC voltage detection part 100 Hybrid railway vehicle 101 Engine 102 Generator 103 Converter 104 Wheel shaft 105 Electric motor 106 Inverter 107,108 Battery unit 110,111 Storage battery 112, 113 Battery controller 116 Disconnector box 120 Main converter MS1, MS2 Disconnector LB5, LB6 Contactor

Claims (6)

An engine, a generator that converts engine power into electric power, a converter that converts the output voltage of the generator into DC voltage, a storage battery that stores electric power, an electric motor that drives a wheel shaft by electric power, and a DC voltage An inverter that converts the voltage into an AC voltage and outputs it to the electric motor, and the storage battery is electrically connected to an intermediate node between the converter and the inverter via a power line and a contactor that disconnects the power line. A charging control device in a connected hybrid railway vehicle,
A charging cable electrically connected to the node between the converter and the inverter;
A current output unit for supplying a charging current to the charging cable using an external power source; and
A low voltage cable electrically connected to the wiring of the contactor;
When outputting the charging current, a control unit that outputs a control signal for closing the connection of the contactor via the low-voltage cable;
A charging control device for a hybrid railway vehicle, comprising: Between the converter and the inverter, a first disconnector capable of electrically disconnecting the converter and the intermediate node, and a first disconnector capable of electrically disconnecting the inverter and the intermediate node. With two disconnectors,
One end of the charging cable is connected to a conductive portion between the first disconnector and the second disconnector in a disconnector box in which the first disconnector and the second disconnector are accommodated. The charging control apparatus for a hybrid railway vehicle according to claim 1, wherein the charging control apparatus is configured as described above. The hybrid railway vehicle is provided with a battery controller that monitors the storage battery and notifies the monitoring result to the outside.
2. The hybrid railway vehicle according to claim 1, wherein the control unit communicates with the battery controller via the low-voltage cable and controls charging of the storage battery based on a monitoring result of the battery controller. Charge control device.   The charging control device for a hybrid railway vehicle according to claim 3, wherein power of the battery controller is supplied through the low-voltage cable. It has an operation unit that can set the amount of charge when charging is completed,
The charging control device for a hybrid railway vehicle according to claim 1, wherein the control unit ends charging of the storage battery according to a charge amount set by an operation of the operation unit. The charging control device according to claim 1, wherein the charging control device controls charging to a hybrid railway vehicle in which the storage battery and the contactor are provided in a plurality of systems.
A charging system operation unit that can be set or set to charge any one of the plurality of storage batteries or any of the plurality of storage batteries,
The control unit closes the connection of the contactor of the system set to execute charging when outputting the charging current.

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