JP5485128B2 - Battery unit for railway vehicles - Google Patents

Description

  The present invention relates to a railway vehicle battery unit mounted on a railway vehicle.

  Railway vehicles are transportation systems that consume less energy than other transportation systems such as automobiles. On the other hand, interest in environmental problems such as global warming is increasing, and further energy saving is demanded for railway vehicles.

  As part of such energy saving in the field of railway vehicles, efforts are being made to save energy by applying battery technology. For example, by installing a battery unit and a main converter on a diesel car and using a motor as a generator during braking, regenerative braking is performed to collect the kinetic energy of the vehicle as electrical energy, and the electric power obtained by the regenerative braking A hybrid diesel car that charges a battery unit and uses it during powering has been proposed. In addition, a battery unit that can charge and discharge electric power is installed in the main converter that drives the railway vehicle. The battery unit absorbs the electric power that cannot be returned to the overhead train line during regenerative braking, and the electric power is used for regenerative operation during powering operation. Absorbers are being studied and put to practical use.

  As an example of a railway vehicle battery unit, a configuration described in Patent Document 1 has been proposed. The battery unit described in Patent Literature 1 includes a plurality of battery modules on which lithium ion battery cells are mounted, and a control unit that monitors the state of the battery modules and controls charging / discharging. In this battery unit, the battery module and the control unit are stored in a battery box housing. At both ends of the battery case, air intake / exhaust ports and fans for exhausting the heat in the battery module are provided, and outside air that has flowed into the battery case by rotating the fan is contained in the battery case Then, the battery module is cooled at this time.

JP 2010-055973 A

  As described above, the battery unit cools the battery module accommodated in the battery box casing by circulating cooling air in the battery box casing. In addition, an intake port and an exhaust port are formed in order to allow cooling air to flow in and out, and to exhaust air that has taken heat from the battery module out of the battery box casing. By the way, since the battery unit is generally installed under the floor of the vehicle together with the main conversion device that drives the vehicle, there is no danger to passengers / passengers even in an emergency situation caused by the battery unit. It is necessary to consider so.

  For example, when a battery unit has a lithium ion battery, a toxic gas is generated when the electrolyte in the battery leaks. Therefore, when the battery unit fails, it is necessary to seal the battery unit, that is, close the supply / exhaust port and stop the operation of the battery so that the toxic gas does not diffuse. In the event of a fire in the vehicle, it is necessary to take similar measures so that the flame does not enter the battery unit through the air supply / exhaust port and the battery fails.

  On the other hand, in the case of a railway vehicle traveling in a subway or tunnel, when a fire occurs in a station or when a parallel vehicle is stopped due to a fire, the vehicle is moved to a safe place to evacuate passengers / passengers. It is necessary to let For this reason, regarding the battery unit, it is necessary to determine whether the battery unit needs to be sealed or operated depending on the state of fire occurrence.

  As described above, when battery technology is applied to a railway vehicle, it is necessary to seal the battery unit when an emergency occurs, but Patent Document 1 does not mention sealing of the battery unit.

Therefore, when an emergency such as a situation where a fire occurs in the vehicle or a fire outside the vehicle affects the vehicle or a toxic gas is generated in the battery unit in the battery unit for a rail vehicle, It should be solved by clarifying measures such as whether to seal the battery unit or to charge / discharge the battery to prevent the battery from failing or to protect passengers and passengers There are challenges.
An object of the present invention is to solve these problems. When an emergency such as a fire occurs in a railway vehicle battery unit, measures are taken for sealing / charging / discharging the battery unit, etc.・ To avoid danger to passengers.

  A battery unit for a railway vehicle according to the present invention includes a battery module and a battery box housing in which the battery module is housed. Outside air that cools the inside as a vent can flow into the battery box housing. In the railway vehicle battery unit for charging / discharging electric power to the main converter for driving the railway vehicle, the air inlet and the exhaust port for discharging the air that has cooled the battery module are formed. And the position of the hole is made to coincide with the position of the vent hole by shifting the closing plate along the battery box housing and the closing plate having a hole. And a closing plate operating device that enables cooling air to flow and seals the battery box housing by shifting the both positions.

  The railcar battery unit is mounted on the railcar, and operates the closing plate operating device based on a fire detection, a smoke detection in the battery box housing, and a predetermined operation command. And a battery unit control device for controlling ventilation and sealing of the battery box housing. Then, if a fire sensor that detects a fire or a gas detection sensor that detects smoke in the battery unit detects these smoke or smoke in the battery unit, consider whether there is an emergency operation command or not. For the battery unit, the opening / closing of the air supply / exhaust port of the battery box housing or the necessity of the charge / discharge operation is determined, and the stop / operation is determined for the main converter.

  According to the railway vehicle battery unit of the present invention, depending on the occurrence of an emergency such as a fire or smoke inside the battery unit, by determining the necessity of sealing and charging / discharging operation of the railway vehicle battery unit, It is possible to seal the battery unit suitable for the operation of railway vehicles. As a result, the safety of passengers and passengers can be ensured.

FIG. 1 is a perspective view showing a first configuration of a first embodiment of a railway vehicle battery unit according to the present invention. FIG. 2 is a side view showing an example of a railway vehicle equipped with a railway vehicle battery unit and a main converter. FIG. 3 is a cross-sectional view of the railcar battery unit shown in FIG. 1 cut along line AB. FIG. 4 is an example of logic for determining sealing and stopping of the battery unit in the railway vehicle battery unit according to the present invention. FIG. 5 is an example of logic for determining whether to stop the operation of the main converter of the railway vehicle battery unit according to the present invention. FIG. 6 shows a second configuration of the railcar battery unit according to the present invention. FIG. 7 is a cross-sectional view of the railcar battery unit shown in FIG. 6 cut along line AB. FIG. 8 shows a third configuration of the railcar battery unit according to the present invention. 9 is a cross-sectional view of the railcar battery unit shown in FIG. 8 cut along line AB. FIG. 10 is an example of logic for determining sealing and operation stop of the battery unit and operation stop of the main converter of the second embodiment of the battery unit for railway vehicles according to the present invention. FIG. 11 is an example of logic for determining the sealing and operation stop of the battery unit and the operation stop of the main converter of the third embodiment of the railway vehicle battery unit according to the present invention.

  Next, an embodiment of a railcar battery unit according to the present invention will be described with reference to the drawings.

A first embodiment of a railway vehicle battery unit according to the present invention will be described.
FIG. 1 is a perspective view showing a railway vehicle battery unit (hereinafter, for the sake of simplicity, “battery vehicle battery unit” is abbreviated as “battery unit”) according to a first embodiment of the present invention. FIG. 1A shows a state in which the vent of the battery unit is opened, and FIG. 1B shows a state in which the vent is closed and the battery unit is sealed from the outside. The battery unit 1 is a power storage device that can charge and discharge electric power to a main conversion device that drives a railway vehicle. The battery unit 1 includes a plurality of battery modules (not shown) on which battery cells are mounted, and a battery box housing in which the battery modules are housed. The battery module generates a considerable amount of heat when charging and discharging power, so that air that cools the battery module as a vent flows into the wall plate of the battery box housing so that it does not become abnormal due to the generated heat. A plurality of intake / exhaust ports 2 for discharging the air that has cooled the battery module is formed. The air intake / exhaust port 2 is disposed on the front surface of the battery unit 1 and on the back surface that cannot be seen in the drawing. The cooling air flowing in from the air intake port flows through the inside of the battery box housing while taking heat from the battery module, and the air deprived of heat flows from the exhaust port. Although FIG. 1 shows a case where the intake / exhaust ports 2 are arranged in four rows and three rows, this arrangement does not limit the present invention. Moreover, it is preferable to provide a mesh or a filter at the intake / exhaust port 2 so that stones, dust, rainwater, snow blocks, and the like do not enter the inside of the battery unit 1.

  Blocking plates 3 and 4 are installed on the front and back surfaces of the battery unit 1. The closing plates 3 and 4 are installed so as to be in contact with the surface of the battery box housing of the battery unit 1 and are perforated in the same pattern as the arrangement of the air supply / exhaust ports 2 formed in the battery box housing. In this manner, the air supply / exhaust port 2 can be opened and closed by sliding along the surface of the battery box housing. When the closing plates 3, 4 are lifted upward as shown in FIG. 1A, the positions of the holes of the closing plates 3, 4 coincide with the air supply / exhaust port 2, and air passes through the holes and the air supply / exhaust port 2. Inflow and outflow into the battery case. Further, when the closing plates 3 and 4 are shifted downward as shown in FIG. 1B, the positions of the holes of the closing plates 3 and 4 are simultaneously shifted from the air supply / exhaust port 2, and the actual plate in which no holes are formed is formed. The air supply / exhaust port 2 is blocked by the portion, and the battery unit 1 can be sealed.

  The closing plate 3 is operated by closing plate operating devices 5a and 5b. Although not shown here, closing plate operating devices 6 a and 6 b for operating the closing plate 4 are also installed on the back surface of the battery unit 1.

  The closing plate operating devices 5a, 5b and 6a, 6b hold the closing plates 3 and 4 with electromagnets, and when sealing the battery unit 1, the energization to the electromagnets is stopped and the closing plates 3 and 4 are lowered by gravity. Alternatively, the closing plates 3 and 4 may be fixed with something like a wedge, and the closing plates 3 and 4 may be lowered by gravity by blasting the wedge. The closing plates 3 and 4 may be moved up and down by a linear motor, or the closing plates 3 and 4 are suspended by wires through a pulley, and the closing plates 3 and 4 are wound by winding and returning the wires by a motor. The rack gear may be arranged on the side surfaces of the closing plates 3 and 4 and the closing plates 3 and 4 may be moved up and down by a motor to which a pinion gear or a worm gear is attached.

  FIG. 2 shows an example of a railway vehicle on which the battery unit 1 and the main converter (inverter) 9 are mounted. The railway vehicle is composed of three vehicles 7a, 7b and 7c. The vehicles 7a, 7b, and 7c have carts 8a and 8b, 8c and 8d, and 8e and 8f, respectively. In the vehicle 7a, the battery unit 1 and a main converter 9 for driving the vehicle are installed under the floor. A fire sensor 10 for detecting a fire is installed under the floor of the vehicle 7a.

  The number of vehicles in the train and the number of battery units 1 and main converters 9 shown in FIG. 2 show an example of a railway vehicle, and do not limit the present invention. For example, the number of vehicles for formation may be three or more or less, or there may be a plurality of vehicles equipped with the battery unit 1, the main converter 9, and the fire sensor 10.

  FIG. 3 shows a cross section of the battery unit shown in FIG. 1 cut along the line AB. FIG. 3A shows a state where the intake / exhaust port 2 is opened, and FIG. 3B shows a state where the intake / exhaust port 2 is closed. Moreover, the same code | symbol is attached | subjected to the component and site | part of a battery unit shown in FIG. 3 about the thing equivalent to what is shown in FIG. In the battery unit 1 shown in FIG. 3, the inside thereof is shown in a four-stage configuration, but this does not limit the present invention.

  Inside the battery unit 1, gas detection sensors 11a, 11b, 11c, and 11d that detect toxic gas generated inside the unit are installed at each stage, and the gas detection sensors 11a to 11d detect toxic gas. Then, a gas detection signal is output. The gas detection signal is input to the battery unit control device 12 that controls the charging / discharging operation of the battery unit 1 and the opening / closing operation of the closing plates 3 and 4 with respect to the intake / exhaust port 2. Similarly, a fire detection signal is input to the battery unit control device 12.

  When the battery unit control device 12 determines that an emergency has occurred by inputting the gas detection signal and the fire detection signal, a sealing command for closing the closing plates 3 and 4 is issued. It is output to the operating devices 5a, 5b and 6a, 6b. Further, an operation stop command for the main converter 9 and a signal for stopping the charge / discharge operation of the battery unit 1 (not shown here) (hereinafter referred to as a charge / discharge operation stop signal) are output.

Table 1 shows combinations of sealing of the battery unit 1 and stopping of the charge / discharge operation and stopping of the operation of the main converter 9 in the first embodiment. In Table 1, the emergency column represents the presence or absence of a fire (fire detection signal by the fire sensor 10) or generation of toxic gas inside the battery unit 1 (gas detection signals by the gas detection sensors 11a to 11d). The emergency operation command column is an operation command for evacuating passengers / passengers from the fire site etc. in the case of a subway, etc., when emergency operation is output “Yes”, otherwise “No” . The emergency driving command is a command issued by the occupant pressing a button installed on the cab, for example, depending on the situation. Moreover, the row | line | column of a battery unit represents the necessity of sealing of the battery unit 1, and the necessity (stop or operation | movement) of charging / discharging operation | movement, and the row | line of the main converter is the necessity (operation | movement or stop or operation | movement of the main converter 9). ).

In the present embodiment, it is assumed that the vehicle can obtain power from the overhead train line even in an emergency situation where a fire or toxic gas is generated. In this case, it is classified into four cases depending on the contents of the emergency situation and the presence or absence of an emergency driving command. Since the vehicle can be powered by the electric power from the overhead train line, in any case, the battery unit 1 is sealed and its charge / discharge operation is stopped.
No. in Table 1 When fire or toxic gas is generated as in the cases 1 and 2, but there is no emergency operation command, the battery unit 1 is sealed to stop the charging / discharging operation of the battery unit 1, and the main converter 9 Stop the operation.
No. To protect the battery unit 1 when no toxic gas is generated from the inside of the battery unit 1 and there is an emergency operation command even if a fire (especially an external fire) occurs as in case 3 Then, the battery unit 1 is sealed and the charging / discharging operation is stopped, and the main conversion device 9 operates by obtaining power from the overhead train line to evacuate passengers / passengers to a safe place.
And No. When no toxic gas is generated from the inside of the battery unit 1 and there is an emergency operation command as in the case 4, the battery unit 1 does not leak from the inside of the battery unit 1. 1 and the charge / discharge operation are stopped, and the main converter 9 operates by obtaining electric power from the overhead train line, and evacuates passengers / passengers to a safe place.

  An example of a circuit configuration for realizing the logic of Table 1 will be described with reference to FIGS. The signals of the gas detection sensors 11a to 11d are input to the first gas detection determination circuit 13, and the first gas detection determination circuit 13 is configured to detect gas detection when one or more gas detection sensors detect toxic gas. to decide. The signal output from the first gas detection determination circuit 13 and the signal output from the fire sensor 10 are input to the first emergency determination circuit 14, and an emergency is detected if a toxic gas or a fire is detected by each output signal. Judge the situation.

  A signal output from the first emergency determination circuit 14 is input to the first delay circuit 15. The first delay circuit 15 is a circuit that outputs a signal when the input signal continues for a certain time, and is intended to prevent erroneous detection of gas or fire due to a malfunction of the sensor. Since it is considered that it takes several seconds until toxic gas is generated in the battery unit 1 and leaks outside the battery unit 1, the first delay circuit 15 receives an emergency signal from the first emergency determination circuit 14. A signal should be output if the state continues for at least 1 second. Note that the first delay circuit 15 may be omitted in an environment where the sensor is unlikely to malfunction. In this case, the signal output from the first emergency determination circuit 14 is input to the first reset circuit 16 described later.

  The signal output from the first delay circuit 15 is input to the first reset circuit 16. The first reset circuit 16 also receives a reset signal indicating that the emergency has converged. The reset signal is output, for example, when the occupant determines the convergence of the emergency and presses a button installed on the cab.

  In the first reset circuit 16, if the signal output from the first delay circuit 15 indicates an emergency state and the reset signal is not input, the operation of the battery unit 1 is stopped and the battery unit 1 is The sealing command is output to the closing plate operating devices 5a, 5b and 6a, 6b, and the battery unit 1 is sealed. Further, when the battery unit 1 has a cooling fan, the fan is stopped.

  A command for stopping the main converter 9 is generated by a circuit as shown in FIG. 5, for example. That is, a signal indicating that the charging / discharging operation of the battery unit 1 is stopped and an emergency operation command indicating that emergency operation is necessary are input to the first emergency operation command determination circuit 17. The emergency operation command may be output, for example, when there is a power running command in a state where a fire or smoke is generated in the battery unit 1, or is output when a passenger presses a button installed on the cab. But you can. In the first emergency operation command determination circuit 17, when the operation of the battery unit 1 is stopped and there is no emergency operation command, an operation stop command is output to the main converter 9. On the other hand, if the operation of the battery unit 1 is stopped and there is an emergency operation command, the operation stop command is not output to the main converter 9.

  In this embodiment, as shown in FIGS. 1 and 3, the closing plates 3 and 4 and the closing plate operating devices 5a and 5b and 6a and 6b are installed outside the battery unit 1, but as shown in FIG. As an example, the closing plates 3 and 4 and the closing plate operating devices 5 a and 5 b and 6 a and 6 b may be installed inside the battery unit 1. FIG. 7 shows a cross section of the battery unit of FIG. 6 taken along line AB. In the example shown in FIGS. 6 and 7, the same reference numerals are given to the same components and parts as those in the examples shown in FIGS.

  In the case of FIG. 1, it is assumed that the closing plates 3 and 4 are installed in the existing battery unit 1, and the installation of the closing plates 3 and 4 is easier than when the closing plates are installed inside. On the other hand, when the battery unit 1 is newly installed, as shown in FIG. 6, the installation of the closing plates 3 and 4 inside the battery unit 1 is easier to handle because there are fewer operating parts outside the battery unit 1. is there. As in the example shown in FIG. 6, when the upper portions 3 a and 4 a of the closing plates 3 and 4 protrude to the outside of the battery unit 1, the upper portions 3 a and 4 a of the closing plates 3 and 4 are bent to form the closing plates 3 and 4. 7 is closed, the folded upper portions 3a and 4a of the closing plates 3 and 4 are fitted into the recesses 1a and 1a on the upper portion of the battery unit 1 to seal the battery unit 1 as shown in FIG. It is preferable to adopt a configuration to do so.

  In addition, as for the arrangement of the closing plates 3, 4, as in the example shown in FIG. 8, the closing plates 3, 4 and the closing plate operating devices 5 a, 5 b and 6 a, 6 b are all installed inside the battery unit 1. Good. FIG. 9 shows a cross section of the battery unit shown in FIG. 8 taken along line AB. In the example shown in FIGS. 8 and 9, the same reference numerals are given to the same components and parts as those in the examples shown in FIGS. 1 and 3.

With the configuration shown in the example shown in FIG. 8, there is no open portion other than the intake / exhaust port 2, and the battery unit 1 can be reliably sealed when the closing plates 3 and 4 are closed. Moreover, in the example shown in FIG. 8, since there is no part which protrudes outside the battery unit 1 unlike the example shown in FIG. 6, the battery unit 1 can be handled more easily than in FIG.

  A second embodiment of the battery unit according to the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in that the combination of sealing the battery unit 1 and stopping the charge / discharge operation and stopping the operation of the main converter 9 are different.

  In the first embodiment, it is assumed that the vehicle can obtain power from the overhead train line even in an emergency situation in which a fire or toxic gas is generated. In the second embodiment, the power from the overhead train line is used in an emergency situation. It is assumed that is no longer available.

  The installation of the closing plate and the closing plate operating device for closing the air supply / exhaust port of the battery unit is the same as in the first embodiment. The closing plates 3 and 4 may be arranged outside the battery unit 1 as in the example shown in FIG. 1, or the closing plates 3 and 4 may be placed inside the battery unit 1 as in the examples shown in FIGS. 6 and 8. The arrangement may be arranged. The fire sensor and the gas detection sensor are also arranged in the same manner as in the first embodiment.

Table 2 shows combinations of sealing of the battery unit 1 and charging / discharging operation stop and operation stop of the main converter 9 in the second embodiment. In the present embodiment, it is classified into four cases depending on the contents of the emergency and the presence or absence of an emergency driving command.

First, the countermeasures shown in Table 2 assume a case where power cannot be obtained from an overhead train line. First, no. When fire or toxic gas is generated as in cases 1 and 2, when there is no emergency operation command, the battery unit 1 is sealed to stop the charge / discharge operation, and the main converter 9 is also stopped. To do.
In order to drive the vehicle, it is necessary to discharge power from the battery unit 1 to drive the main converter 9. Therefore, no. In the case where an emergency operation command is issued when a fire has occurred but the battery unit is normal as in the case 3, the battery unit 1 is discharged in order to drive the main converter 9 by discharging power. 1 and the charge / discharge operation are not stopped, and the main converter 9 is not stopped.
No. As shown in Fig. 4, toxic gas is generated from the inside of the battery unit 1, but when there is an emergency operation command, the battery unit is broken and the charge / discharge operation is determined to be dangerous, and the battery unit is sealed. The charging / discharging operation of the battery unit 1 and the operation of the main converter 9 are stopped.

  Note that either one of the logics of the first embodiment and the present embodiment may be implemented, or both of the logics are implemented, and when the voltage of the overhead train line drops or for logic switching installed in the cab When the switch is pressed, the logic of the first embodiment may be switched to the logic of the present embodiment.

  An example of a circuit configuration for realizing the logic of Table 2 will be described with reference to FIG. The signals of the gas detection sensors 11a to 11d are input to the second gas detection determination circuit 18, and the second gas detection determination circuit 18 determines that the gas is detected when toxic gas is detected by one or more gas detection sensors. . The signal output from the second gas detection determination circuit 18, the signal output from the fire sensor 10, and the emergency operation command indicating that emergency operation is necessary are input to the second emergency determination circuit 19. According to the combinations in Table 2, it is determined whether the battery unit 1 is sealed, the charge / discharge operation is stopped, and the main converter 9 is stopped. Here, the emergency operation command may be output when there is a power running command in a state where, for example, a fire or smoke is generated in the battery unit 1, or is output when a passenger presses a button installed on the cab. May be used.

  A signal output from the second emergency determination circuit 19 is input to the second delay circuit 20. The delay circuit is a circuit that outputs an input signal when the input signal continues for a certain period of time, and is intended to prevent erroneous detection of gas or fire due to a malfunction of the sensor. Since it is considered that it takes several seconds until toxic gas is generated in the battery unit 1 and leaks outside the battery unit 1, the second delay circuit 20 indicates the state of the emergency from the second emergency determination circuit 19. A signal should be output if the input signal continues for at least one second. Note that the second delay circuit 20 may be omitted in an environment where the sensor is unlikely to malfunction. In this case, a signal output from the second emergency determination circuit 19 is input to a second reset circuit 21 described later.

  A signal output from the second delay circuit 20 is input to the second reset circuit 21. The second reset circuit 21 also receives a reset signal indicating that the emergency has converged. The reset signal is output, for example, when the occupant determines the convergence of the emergency and presses a button installed on the cab.

  In the second reset circuit 21, the signal output from the second delay circuit 20 indicates that the battery unit 1 is sealed, the charge / discharge operation is stopped, the main converter 9 is stopped, and the reset signal is not input. For example, the operation of the battery unit 1 and the main converter 9 is stopped, and a command to seal the battery unit 1 is output to the closing plate operating devices 5a, 5b and 6a, 6b, and the battery unit 1 is sealed. Further, when the battery unit 1 has a cooling fan, the fan is stopped.

  A third embodiment of the battery unit according to the present invention will be described with reference to FIG. In the present embodiment, as in the second embodiment, it is assumed that power cannot be obtained from the overhead train line in an emergency situation. However, in the second embodiment, an emergency operation command is issued even if a fire occurs. In some cases, the charging / discharging operation is performed in a state where the battery unit 1 is sealed, and power is supplied to the main converter 9.

  When a fire occurs, it is assumed that the temperature outside the battery unit 1 is higher than the inside of the battery unit 1. In this case, if the charging / discharging operation is performed without sealing the battery unit 1 as in the second embodiment, the heat outside the battery unit 1 may propagate to the inside and cause the battery to fail. Therefore, in this embodiment, the logic as shown in Table 3 is configured to prevent the heat outside the battery unit 1 from propagating to the inside by sealing the battery unit 1.

  The installation of the closing plate and the closing plate operating device for closing the air supply / exhaust port of the battery unit is the same as in the first embodiment. The structure which arrange | positions a closing board outside a battery unit like FIG. 1 may be sufficient, and the structure which arrange | positions a closing board inside a battery unit like FIG. 6, FIG. 8 may be sufficient. The fire sensor and the gas detection sensor are also arranged in the same manner as in the first embodiment.

Table 3 shows combinations of sealing of the battery unit 1 and charging / discharging operation stop and operation stop of the main converter 9 in the third embodiment. In the present embodiment, it is classified into four cases depending on the contents of the emergency and the presence or absence of an emergency driving command.

In Table 3, no. As in the cases shown in 1 and 2, when a fire or toxic gas is generated and there is no emergency operation command, the battery unit 1 is sealed and the charge / discharge operation of the battery unit 1 and the operation of the main converter 9 are stopped. To do.
No. When a fire has occurred and there is an emergency operation command as in the case shown in FIG. 3, the battery unit 1 is sealed in order to prevent heat from entering from the outside of the battery unit 1, and the battery unit 1 is discharged to discharge power. In order to drive the converter 9, the charging / discharging operation of the battery unit 1 and the operation of the main converter 9 are not stopped. This measure is based on the premise that the risk of sealing the battery unit 1 is small if the charge / discharge period is short.
Furthermore, no. 4, when toxic gas is generated from the inside of the battery unit 1 and there is an emergency operation command, the battery unit 1 is out of order and the charge / discharge operation is determined to be dangerous. The battery unit 1 is sealed and the charging / discharging operation of the battery unit 1 and the operation of the main converter 9 are stopped.

  Any one of the logics of the first and second embodiments and the present embodiment may be implemented, or two or more logics may be implemented and used by switching. The switching between the first embodiment and the third embodiment is performed from the logic of the first embodiment when, for example, the voltage of the overhead train line is lowered or the switch for logic switching installed in the cab is pushed. Switch to logic. Switching between the second embodiment and the present embodiment is performed by, for example, installing a temperature sensor for measuring the temperature outside the battery unit 1 and the temperature inside the battery unit 1, and the temperature outside the battery unit 1 is higher than the temperature inside. If it is higher, the logic of the second embodiment is switched to the logic of the present embodiment.

An example of a circuit configuration for realizing the logic of Table 3 will be described with reference to FIG.
The signals of the gas detection sensors 11a to 11d are input to the third gas detection determination circuit 22, and if toxic gas is detected by one or more gas detection sensors, it is determined that the gas is detected. The signal output from the third gas detection determination circuit 22, the signal from the fire sensor 10, and the emergency operation command indicating that emergency operation is necessary are input to the third emergency determination circuit 23. According to the combination, it is determined whether the battery unit is sealed, the charge / discharge operation is stopped, and the main converter is stopped. The emergency operation command may be output, for example, when there is a powering command in a state where a fire or smoke is generated in the battery unit, or may be output when a passenger presses a button installed on the cab. Good.

  In FIG. 11, five diagonal lines in the figure indicate that five signal lines are included. The contents of the five signal lines are a signal for stopping the charging / discharging operation of the battery unit 1, a signal for closing the closing plates 3 and 4, a signal for stopping the operation of the main converter 9, and a cooling fan inside the battery unit 1. Signal.

  A signal output from the third emergency determination circuit 23 is input to the third delay circuit 24. The delay circuit is a circuit that outputs an input signal when the input signal continues for a certain period of time, and is intended to prevent erroneous detection of gas or fire due to a malfunction of the sensor. Since it is considered that it takes about several seconds until toxic gas is generated inside the battery unit 1 and leaks outside the battery unit 1, the third delay circuit 24 uses the emergency signal in the input signal from the third emergency judgment circuit 22. It is preferable to output a signal when this state continues for at least one second. Note that the third delay circuit 24 may be omitted in an environment where the sensor is unlikely to malfunction. In this case, a signal output from the third emergency determination circuit 23 is input to a third reset circuit 25 described later.

  A signal output from the third delay circuit 24 is input to the third reset circuit 25. The third reset circuit 25 also receives a reset signal indicating that the emergency has converged. The reset signal is output, for example, when the occupant determines the convergence of the emergency and presses a button installed on the cab.

  In the third reset circuit 25, the signal output from the second delay circuit 20 indicates that the battery unit 1 is sealed, the charge / discharge operation is stopped, the main converter is stopped, and the reset signal is not input. According to the signal output from the second delay circuit 20, the operation of the battery unit 1 and the main converter 9 is stopped, and a command for sealing the battery unit 1 is output. Further, when the battery unit 1 has a cooling fan, the fan is stopped.

Battery application technology is indispensable to realize further energy saving in railway vehicles. According to the present invention, it is possible to provide a battery unit sealing method adapted to the operation of a railway vehicle by determining whether or not the battery unit needs to be sealed or operated according to the occurrence of an emergency such as a fire. Can be secured.
In the future, railway vehicles equipped with battery units are expected to become increasingly popular. The present invention is an indispensable technique for improving the safety of a railway vehicle equipped with a battery unit.

DESCRIPTION OF SYMBOLS 1 Battery unit 2 Air intake / exhaust port 3 Blocking plate on the front side of the battery unit 4 Closing plates 5a and 5b on the back side of the battery unit Blocking plate operating devices 6a and 6b on the back side of the battery unit Vehicle closing plate operating devices 7a, 7b and 7c on the back side of the battery unit , 8b, 8c, 8d, 8e, 8f Carriage 9 Main converter 10 Fire sensors 11a, 11b, 11c, 11d Gas detection sensor 12 Battery unit control device 13 First gas detection determination circuit 14 First emergency determination circuit 15 First delay circuit 16 First reset circuit 17 First emergency operation command determination circuit 18 Second gas detection determination circuit 19 Second emergency determination circuit 20 Second delay circuit 21 Second reset circuit 22 Second 3 Gas detection determination circuit 23 Third emergency determination circuit 24 Third delay time 25 Third reset circuit

Claims (15)

The battery module includes a battery module and a battery box housing in which the battery module is housed, and the battery box housing cools the battery module as an air inlet through which an outside air for cooling the inside can flow. In the railway vehicle battery unit for charging and discharging electric power to the main conversion device that drives the railway vehicle,
A closing plate that is installed in contact with the vent and has a hole, and allows the cooling air to flow by matching the position of the hole with the position of the vent, and the blocking plate is shifted A closing plate operating device that seals the battery box housing by shifting the position of the hole with respect to the position of the vent ;
The battery box housing is mounted on the railway vehicle, and when the fire is detected, the smoke in the battery box casing is detected, or when a predetermined operation command is issued, the closing plate operating device is operated to operate the battery box casing. Battery unit control device that controls ventilation and sealing of the body,
The battery unit control device detects either a fire or smoke in the battery box housing, and in response to the absence of an emergency operation command, seals the battery box housing and stops the charge / discharge operation; A battery unit for a railway vehicle that performs control to stop the operation of the main converter . The railcar battery unit according to claim 1,
The battery unit for a railway vehicle, wherein the closing plate is disposed on the outer surface of the battery box housing so as to be able to be shifted along the outer surface. The railcar battery unit according to claim 1,
The battery unit for a railway vehicle, wherein the closing plate is disposed on the inner side surface of the battery box casing so as to be displaceable along the inner side surface. In the railcar battery unit according to claim 3,
The closing plate is provided with a bent portion at an end portion extending outward of the battery box housing, and the closing plate has a sealed position on a wall surface corresponding to the bent portion. A railcar battery unit characterized in that a recess into which the bent portion fits in an occupied state is formed. In the railcar battery unit according to claim 3,
The battery box housing is formed with a recess into which the end of the closing plate that is displaced on the inner wall can be fitted, and the end of the closing plate is fitted into the recess and abuts against the bottom of the recess in a vented state. A battery unit for a railway vehicle characterized by the above. In the railcar battery unit according to any one of claims 2 to 5,
The closing plate operating device is a mechanism for transmitting the operation by the electromagnet to the shifting operation of the closing plate,
A mechanism for transmitting the linear motion of the linear motor or the rotation operation of the electric motor to the shifting operation of the closing plate, a mechanism for shifting the closing plate lifted by the action of the wedge by the weight of the closing plate, or A railcar battery unit characterized by being a mechanism for transmitting an operation of a fluid actuator to a shifting operation of the closing plate. The railcar battery unit according to claim 1,
The battery unit controller is
In response to the detection of either fire or smoke in the battery box casing and the presence of the emergency operation command, the battery box casing is sealed to stop the charging / discharging operation, and the main converter is operated. A railway vehicle battery unit characterized by performing control to perform . The railcar battery unit according to claim 1 ,
The battery unit controller is
Although no fire is detected, smoke is detected in the battery box housing, and when there is an emergency operation command, the battery box housing is sealed to stop the charge / discharge operation and stop the operation of the main converter Control to
In response to the detection of a fire but the presence of an emergency operation command that does not detect smoke in the battery box casing, a charge / discharge operation is performed without sealing the battery box casing and the operation of the main converter is performed. A railway vehicle battery unit characterized by performing control to perform. The railcar battery unit according to claim 1 ,
The battery unit controller is
Fire is not detected according to the detected and an emergency operation command fuming in the battery box housing there, the operation of the stopped and the main converter The sealed charging and discharging operations of the battery box housing Control to stop,
Although not detect smoke in the battery box housing in response to and emergency operation command detects the fire is present, the operation of and the main converter performs a discharge operation with sealing the battery box housing A railcar battery unit characterized by performing control. The battery module includes a battery module and a battery box housing in which the battery module is housed, and the battery box housing cools the battery module as an air inlet through which an outside air for cooling the inside can flow. In the railway vehicle battery unit for charging and discharging electric power to the main conversion device that drives the railway vehicle,
A closing plate that is installed in contact with the vent and has a hole, and allows the cooling air to flow by matching the position of the hole with the position of the vent, and the blocking plate is shifted A closing plate operating device that seals the battery box housing by shifting the position of the hole with respect to the position of the vent;
The battery box housing is mounted on the railway vehicle, and when the fire is detected, the smoke in the battery box casing is detected, or when a predetermined operation command is issued, the closing plate operating device is operated to operate the battery box casing. Battery unit control device that controls ventilation and sealing of the body,
The battery unit control device performs control for sealing the battery unit when a fire is detected and a predetermined operation command is not output or when smoke is detected in the battery unit, and the battery unit The battery unit for railway vehicles is characterized by stopping the charging / discharging operation . The battery module includes a battery module and a battery box housing in which the battery module is housed, and the battery box housing cools the battery module as an air inlet through which an outside air for cooling the inside can flow. In the railway vehicle battery unit for charging and discharging electric power to the main conversion device that drives the railway vehicle,
A closing plate that is installed in contact with the vent and has a hole, and allows the cooling air to flow by matching the position of the hole with the position of the vent, and the blocking plate is shifted A closing plate operating device that seals the battery box housing by shifting the position of the hole with respect to the position of the vent;
The battery box housing is mounted on the railway vehicle, and when the fire is detected, the smoke in the battery box casing is detected, or when a predetermined operation command is issued, the closing plate operating device is operated to operate the battery box casing. Battery unit control device that controls ventilation and sealing of the body,
The battery unit control device detects a fire, but does not detect smoke in the battery unit and does not seal the battery unit when a predetermined operation command is output. A battery unit for a railway vehicle characterized by not stopping the charging / discharging operation of the unit and the operation of the main converter . The battery unit for a railway vehicle according to any one of claims 7 to 11 ,
The battery unit controller is
After sealing the battery box housing by shifting the closing plate, if a command to open the vent is output in a state where neither a fire nor smoke in the battery unit is detected, the closing plate is A battery unit for a railway vehicle, wherein the vent is opened by returning to a position before the battery box housing is sealed . In the railcar battery unit according to any one of claims 7 to 12,
The battery unit controller is
A gas detection determination circuit to which a signal for detecting smoke in the battery case is input,
An emergency determination circuit to which at least an output signal of the gas detection determination circuit and a signal detecting a fire are input,
A delay circuit for delaying the output of the emergency determination circuit;
And a reset circuit that receives the output of the delay circuit and the reset signal, and outputs at least a charge / discharge operation stop command, a sealing command, and a command to stop the fan disposed in the vent hole
A battery unit for railway vehicles, comprising: The battery module includes a battery module and a battery box housing in which the battery module is housed, and the battery box housing cools the battery module as an air inlet through which an outside air for cooling the inside can flow. In the railway vehicle battery unit for charging and discharging electric power to the main conversion device that drives the railway vehicle,
A closing plate that is installed in contact with the vent and has a hole, and allows the cooling air to flow by matching the position of the hole with the position of the vent, and the blocking plate is shifted And a closing plate operating device that seals the battery box housing by shifting the position of the hole with respect to the position of the vent.
The closing plate is disposed on the inner side surface of the battery box housing so as to be able to be shifted along the inner side surface,
The closing plate is provided with a bent portion at an end portion extending outward of the battery box housing, and the closing plate has a sealed position on a wall surface corresponding to the bent portion. A railcar battery unit characterized in that a recess into which the bent portion fits in an occupied state is formed . The battery module includes a battery module and a battery box housing in which the battery module is housed, and the battery box housing cools the battery module as an air inlet through which an outside air for cooling the inside can flow. In the railway vehicle battery unit for charging and discharging electric power to the main conversion device that drives the railway vehicle,
A closing plate that is installed in contact with the vent and has a hole, and allows the cooling air to flow by matching the position of the hole with the position of the vent, and the blocking plate is shifted And a closing plate operating device that seals the battery box housing by shifting the position of the hole with respect to the position of the vent.
The closing plate is disposed on the inner side surface of the battery box housing so as to be able to be shifted along the inner side surface,
The battery box housing is formed with a recess into which the end of the closing plate that is displaced on the inner wall can be fitted, and the end of the closing plate is fitted into the recess and abuts against the bottom of the recess in a vented state. about
A battery unit for railway vehicles.

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