JP2009161122A - Railroad vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mount and operate a capacitor in a predetermined temperature range. <P>SOLUTION: The purpose is attained by having a ventilating air-conditioning system 3 for air-conditioning the vehicle inside 1 in the predetermined temperature range by causing the introduction of fresh air to the vehicle inside 1 and exhaust air to the vehicle outside 2 from the vehicle inside 1, and arranging the capacitor 4 supplying electric power to electric equipment 20 for operation including an electric motor MM for traveling and a heat exchange part 5 for forcibly adjusting the temperature to be kept in the predetermined temperature range T1 by exchanging heat with the exhaust air from the vehicle inside 1 of air-conditioning this capacitor 4 in the predetermined temperature range T. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a railway vehicle, and more particularly, to a railway vehicle including a ventilation air-conditioning system that air-conditions the interior of the vehicle to a predetermined temperature range, with introduction of fresh air into the vehicle and exhaust from the interior of the vehicle to the outside of the vehicle.

  As shown in FIG. 7, the railway vehicle is equipped with a ventilation air conditioning system c that air-conditions the interior a within a predetermined temperature range by an air conditioner f, with the introduction of fresh air into the interior a and exhaust from the interior a to the exterior b. The vehicle has been operated with the required displacement for vehicle design. In particular, in a highly airtight vehicle d such as a limited express vehicle or a Shinkansen vehicle, the exhaust is set to a predetermined amount of ventilation through a predetermined exhaust port e. To be satisfied.

On the other hand, a low-floor vehicle whose floor is lower than wheels is already known (see, for example, Patent Document 1), and some air conditioning is performed.
JP 2007-182208 A

  By the way, the current low-floor vehicle is a road surface vehicle. In addition to the reduction in size and weight, energy saving such as recovery of regenerative power, and so-called overhead traveling that travels by feeding power from the overhead line, no overhead line is provided and power storage It is particularly desirable to support an overhead line-less section that enables self-running with electric power. The present inventor has experienced that charging and discharging of the power storage device is unstable during various experiments and examinations for practical use of the power storage device in response to this, and has found that the cause is temperature instability. .

  According to this knowledge, when the temperature of the power storage device is too high, it causes deterioration of the electrolytic solution, resulting in a decrease in the storage capacity and a shortened life. Conversely, if the temperature is too low, such as in the winter or in cold regions, the internal resistance of the storage cell is large, the charge / discharge characteristics are degraded, the output of both voltage and current is reduced, and the voltage and current Fluctuation is large. This cannot guarantee stable operation.

  An object of the present invention is to provide a railway vehicle equipped with a power storage device and operated in a predetermined temperature range based on such new knowledge.

  In order to achieve the above object, the railway vehicle of the present invention is equipped with a ventilation air conditioning system that air-conditions the interior of the vehicle to a predetermined temperature range with the introduction of fresh air into the vehicle and the exhaust from the inside of the vehicle to the outside of the vehicle. In a railway vehicle, a power storage device that supplies electric power to an electric device for operation including an electric motor for traveling, and a predetermined amount by heat exchange between the power storage device and the exhaust air-conditioned in the predetermined temperature range. And a heat exchanging section for forcibly adjusting the temperature so as to keep the temperature range.

  In such a configuration, by installing the power storage device, charging can be performed by an overhead line running over the overhead line or by a charging facility that is installed or moved, and during the overhead line running, the regenerative power can be recovered and charged. In response to this, it is possible to operate by supplying electric power to electric devices such as electric motors for traveling. In addition to being constantly air-conditioned within a predetermined temperature range, the exhaust from the vehicle body and passenger compartment conditioned in the predetermined temperature range is exhausted through heat exchange with the power storage device, and the initial low-temperature state of the power storage device Regardless of the temperature rise state during charging or discharging, the temperature is constantly adjusted so as to forcibly approach the inside of the vehicle and the cabin within a predetermined temperature range where air conditioning is performed.

  The heat exchanging unit may perform the heat exchange in a temperature control case provided outside the vehicle body and containing the power storage device.

  In such a configuration, heat exchange between the exhaust from the vehicle interior and the cabin and the power storage device can be achieved efficiently and stably in the heat exchange passage designed in the limited temperature control case.

  The exhaust fan can be provided in the vehicle body or the temperature control case.

  In such a configuration, according to the exhaust fan only on the vehicle body side, the temperature of the power storage device can be forcibly controlled without installing a special exhaust fan, and by setting the exhaust amount considering the exhaust load for this temperature control Necessary ventilation can be secured. This is also achieved by the exhaust fan on the temperature control case side alone. According to the exhaust fan on both the vehicle body side and the temperature control case side, the exhaust fan on the vehicle body side is normally installed regardless of the temperature control of the power storage device, while the exhaust fan on the temperature control case side is used for temperature control of the power storage device. The exhaust load can be compensated.

  The temperature control case may have an exhaust introduction port connected to the exhaust port of the vehicle body, and an exhaust port that exhausts the exhaust gas after heat exchange with the power storage device to the outside.

  In such a configuration, the heat exchanging part has a temperature control case, and can be manufactured independently from the other such as the vehicle body, and can be put into practical use simply by connecting to the exhaust port on the vehicle body side.

  The temperature control case may be a power storage module containing a plurality of power storage cells as heat generating elements, and a predetermined number of power storage modules may be mounted in units of the power storage module.

  In such a configuration, the temperature control case is a power storage module that stores a plurality of power storage cells that are heat generating elements, so that the arrangement according to the number of stored power storage cells, stably ensuring temperature control by the exhaust passage, By selecting the number of installed storage modules, the storage capacity suitable for the power supply required for the operation of the railway vehicle can be satisfied with the necessary temperature control.

  A frame that supports or forms the floor of the vehicle body is raised on the floor surface, and a recess is formed on the back side of the vehicle body under and on the side of the vehicle body. Can be accommodated and supported by the underframe.

  In such a configuration, the heat exchanging part including the power storage device can be installed together with other underfloor equipment in the recess formed by raising the underframe on the floor surface, so that the cross-sectional area in the traveling direction of the vehicle is almost the same. It does not increase or does not increase, and the support frame can be any of the four sides of the recess that the underfloor equipment faces and the surrounding area. Further, the recesses are provided in a relatively large number of places without impairing the normal function of the railway vehicle.

  A recessed part shall be provided in the range of the installation area | region of a long sheet | seat, a cross sheet | seat, and a bed.

  In such a configuration, the recessed portion opened to the outside is realized without effectively reducing the living space by using the lower space generated in the installation area of the various sheets and the bed, and utilizing the overlap with the recessed portions of the various sheets and the bed. They can be directly supported by the underframe and satisfy their required installation height.

  The present invention can be applied to a railway vehicle from a normal vehicle whose floor is higher than wheels to a low floor vehicle whose floor is lower than wheels.

  In such a configuration, each of the above-described inventions can be applied from a normal vehicle to a low-floor vehicle, and the respective features can be exhibited.

  The heat exchange in the heat exchanging section can be performed while ensuring the exhaust air more than the necessary ventilation.

  In such a configuration, the necessary ventilation amount is ensured including the exhaust load at the heat exchange section.

  Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be employed alone or in combination as much as possible.

  According to the railway vehicle of the present invention, the battery can be operated by charging with an overhead line or a charging facility by installing the power storage device and supplying power to the electric equipment including the collection and recharging of the regenerative electric power when the overhead line is running. Regardless of the time, a comfortable living space is always air-conditioned with ventilation and a comfortable living space is always maintained. Regardless of whether the temperature is low or elevated, the temperature can be forcibly adjusted to the specified temperature range and the power storage device can always be kept in the specified temperature range, so the problem is that the temperature is too low or too high. Can be avoided.

  To efficiently and stably achieve the heat exchange between the exhaust from the vehicle and passenger compartment and the power storage device through the heat exchange path in the limited temperature control case, and stably guarantee the high charge / discharge characteristics of the power storage device. Can do.

  With the exhaust fan only on the vehicle body side or the exhaust fan only on the temperature control case side, the power storage device is forcibly controlled while exhausting air from the appropriate location for uniform air conditioning in the passenger compartment without installing a special exhaust fan. In addition, the required ventilation volume can be secured by setting the final displacement considering the exhaust load. The exhaust fan on both the vehicle body side and the temperature control case side allows the vehicle body side to be installed normally and the temperature control case. The exhaust load can be compensated on the side.

  The heat exchanging part has a temperature control case, can be manufactured independently from other parts such as the car body, and can be put into practical use simply by connecting to the exhaust port on the car body side.

  Because the temperature control case is a power storage module that contains multiple power storage cells that are heat generating elements, it ensures stable temperature control according to the stored power storage cells, and power supply necessary for the operation of railway vehicles is required depending on the number of installed storage cells. Satisfactory and stable operation can be ensured with proper temperature control.

  Install a heat exchanging unit including a power storage device in a recess that can be raised on the floor by raising the underframe on the back side, and without increasing the cross-sectional area in the traveling direction of the vehicle. Therefore, it is suitable for low floor vehicles. Further, the underfloor equipment including the power storage device to be installed can be easily and reliably supported by using the frame surface of the concavity facing each other and any portion around it as a support portion.

  Recesses that are open to the outside can be realized without making the living space narrower by effectively using the lower space generated in the installation area of various sheets such as long sheets and cross sheets and the bed, and using the overlap with the recesses of the various sheets and bed Then, it can be directly supported by the underframe to satisfy the required installation height.

  Each of the above-described inventions can be applied from a normal vehicle to a low-floor vehicle, and can exhibit their respective characteristics.

  Heat exchange is achieved with the necessary ventilation with compensation for the exhaust load for that purpose.

  Hereinafter, a railway vehicle according to an embodiment of the present invention will be described with reference to the drawings for understanding of the present invention. The following description and illustration are specific examples of the present invention, and do not limit the description of the scope of the claims.

  The railway vehicle according to the present embodiment can basically be applied to a railway vehicle from a normal vehicle whose floor is higher than wheels to a low-floor vehicle whose floor is lower than wheels, as in the example shown in FIG. In a railway vehicle equipped with a ventilation air-conditioning system 3 that air-conditions the interior 1 to a predetermined temperature range T with the introduction of fresh air into the interior 1 and exhaust from the interior 1 to the exterior 2, the electric motor MM for driving is operated. The heat storage device 4 that supplies electric power to the electrical equipment including the air conditioning system 3 for use, and the exhaust from the vehicle interior 1 that has been air-conditioned to the power storage device 4 within a predetermined temperature range T, are designed to achieve a predetermined temperature range T1. And a heat exchanging section 5 for forcibly controlling the temperature so as to maintain the temperature. In this way, since the railway vehicle is equipped with the power storage device 4, as shown in FIG. 2, charging can be performed by the overhead wire 8 that is traveling over the overhead line or the charging device 9 that is installed or moved, and regenerative power is generated during the overhead line traveling. Can be collected and charged, and can be operated by supplying power to electric devices including the motor MM and the air conditioning system 3 according to the degree of charging. In both of these power storage operations and overhead line operations, the inside of the vehicle 1, especially the cabin, is constantly air-conditioned to a predetermined temperature range T with fresh air introduction and exhaust ventilation by the ventilation air conditioning system 3, Exhaust from the interior of the vehicle 1 and the cabin air-conditioned to a predetermined temperature range T is exhausted to the outside by heat exchange with the power storage device 4 by the heat exchanging unit 5. Regardless of the temperature rise state, the temperature is constantly adjusted so as to forcibly approach the inside of the vehicle 1 and the predetermined temperature range T where the cabin is air-conditioned.

  Therefore, the power storage device 4 can be charged by the overhead wire 8 or the charging device 9, and the regenerative electric power can be recovered and charged when the overhead wire travels, and the electric device including the power storage device 4 can be powered and operated. Regardless of the time of operation, it is air-conditioned to a predetermined temperature range T with ventilation, and a comfortable living space is always maintained. By exhausting the temperature, the temperature of the power storage device 4 can be constantly maintained within the predetermined temperature range T1 by forcibly adjusting the temperature to the predetermined temperature range T that is air-conditioned regardless of the low temperature state or the temperature rise state of the power storage device 4. The problem of being too low or too high can be avoided. Specifically, when the temperature of the power storage device 4 is too high, it is possible to prevent the electrolyte from deteriorating, resulting in a decrease in power storage capacity and a shortened life. On the other hand, the temperature is too low in the winter or in cold regions, etc., the internal resistance of the storage cell is large, the charge / discharge characteristics are degraded, the output of both voltage and current is decreased, and the voltage and current fluctuations By increasing, it is possible to prevent a situation where stable operation cannot be guaranteed. According to the experiment of the present inventor, when T = T1, the charge / discharge characteristics of the power storage device 4 are satisfactorily stable and reach T = T1 after the operation time has passed.

  Here, as shown in FIG. 1, the heat exchanging unit 5 performs the heat exchange in a temperature control case 7 provided outside the vehicle body 6 and containing the power storage device 4. As a result, heat exchange between the interior 1 and the exhaust from the cabin and the power storage device 4 can be efficiently and stably achieved as set in the heat exchange passage designed in the limited temperature control case 7. it can. That is, heat exchange between the interior 1 of the vehicle and the exhaust from the passenger compartment and the power storage device 4 is efficiently and stably achieved through the heat exchange passage in the temperature control case 7 which is a limited space that is not opened to the outside. The high charge / discharge characteristics of the device 4 can be ensured stably.

  In addition, the air conditioning system 3 has an air conditioner 3a for air conditioning. The air conditioner 3a has an air conditioner fresh air introduction, an indoor air introduction, and a conditioned air within a predetermined range in the vehicle as shown in FIG. It is common to provide an appropriate number of intake air for blowing air, blower fans 11, 12 and the like to achieve substantially uniform air conditioning in the vehicle interior 1, but the exhaust fan 13 is shown by a solid line in FIG. Thus, it can be provided on the vehicle body 6 or on the temperature control case 7 side as indicated by a virtual line in FIG. According to the exhaust fan 13 only on the vehicle body 6 side, the exhaust of the power storage device 4 is forcibly performed while exhausting from one or a plurality of appropriate locations for uniform air conditioning in the vehicle 1 without installing a special exhaust fan. The temperature can be adjusted, and the necessary ventilation volume can be secured by setting the displacement considering the exhaust load for temperature adjustment. This is similarly achieved by the exhaust fan 13 indicated by the phantom line in FIG. According to the exhaust fan 13 on both the vehicle body 6 side and the temperature control case 7 side, depending on the exhaust fan 13 on the vehicle body 6 side, the exhaust fan 13 on the temperature control case 7 side is normally installed regardless of the temperature control of the power storage device 4. Depending on the case, the exhaust load for temperature control of the power storage device 4 can be compensated independently. As a result, the exhaust gas fan 13 on the vehicle body 6 side alone or the exhaust fan 13 on the temperature control case 7 side alone forcibly controls the temperature of the power storage device 4 without installing a special exhaust fan, and the final exhaust gas in consideration of the exhaust load. The required ventilation volume can be secured by setting the volume, and the exhaust fan 13 on both the vehicle body 6 side and the temperature control case 7 side makes the vehicle body 6 side normally installed and the exhaust load on the temperature control case 7 side alone. The temperature control case 7 side can be uniquely supported.

  Further, as shown in FIG. 1, the temperature control case 7 has an exhaust introduction port 15 connected to the exhaust port 14 of the vehicle body 6, and an exhaust port 16 that exhausts the exhaust gas after heat exchange with the power storage device 4 to the outside. It is supposed to be. Thereby, the heat exchange part 5 has the temperature control case 7, can be manufactured independently from others, such as the vehicle body 6, and can be put into practical use simply by connecting to the exhaust port 14 on the vehicle body 6 side. In other words, the heat exchanging part 5 has the temperature control case 7 and is manufactured independently from the vehicle body 6 and the like, and can be put into practical use simply by connecting to the exhaust port 14 on the vehicle body 6 side, and both manufacture and installation are simplified. To do.

  In the example shown in FIG. 5, the temperature control case 7 in the example shown in FIG. 1 constitutes a power storage module M containing a plurality of power storage cells as heat generating elements, and a predetermined number of power storage modules M are mounted. Yes. In this way, the temperature control case 7 is the power storage module M that stores a plurality of power storage cells that are heat generating elements, so that the arrangement according to the number of stored power storage cells, the temperature control guarantee by the exhaust passage can be stably secured, By selecting the number of power storage modules M installed, power supply necessary for the operation of the railway vehicle, for example, a power storage capacity suitable for about 600 V and 600 A in a low-floor vehicle can be satisfied with necessary temperature control. That is, since the temperature control case 7 is the power storage module M containing a plurality of power storage cells that are heat generating elements, the temperature control guarantee is stably secured according to the stored power storage cells, and the number of power storage modules M installed depends on the number of power storage modules M installed. The power supply necessary for operation can be satisfied with the necessary temperature control, and stable operation can be ensured. In particular, since each power storage module M is equipped with the exhaust fan 13 as in the illustrated example, exhaust compensation for heat exchange corresponding to the increase or decrease of the installation of the power storage module M can be satisfied as it is. Further, the plurality of power storage modules M can be arranged in either a single stage or a plurality of stages. In the example shown in FIG. 6, it is possible to handle a storage unit U containing a certain number of storage modules M in order to install the required number of storage modules M, thereby simplifying the handling and installation of the storage modules M. A detailed example of the technology relating to such an arrangement is as described in detail in Japanese Patent Application No. 2007-246553, which is an earlier application filed by the present applicant, and drawings.

  In the example shown in FIG. 5 and FIG. 6, a frame 22 that supports or forms the floor 21 of the vehicle body 6 is raised on the floor surface, and a recess 23 is opened to the bottom and side of the vehicle body 6 on the back side. And the temperature control case 7 of the heat exchange 5 having the power storage device 4 as one of the underfloor devices 20 is accommodated in the recess 23 and assembled into one as shown in FIG. 5, or as shown in FIG. In this manner, the frame 22 is supported alone. Thereby, since the heat exchanging part 3 including the power storage device 4 can be installed together with other underfloor equipment in the recess 23 formed by raising the underframe 22 on the floor surface, the cross-sectional area in the traveling direction of the vehicle can be reduced. Little or no increase is made, and the base frame 22 can be any of the four sides of the recess 23 facing the underfloor equipment and any of its peripheral parts. Further, the recesses 23 are provided in a relatively large number of places without impairing the normal function of the railway vehicle.

  Accordingly, the heat exchanging unit 3 including the power storage device 4 is installed together with other underfloor devices in the recess 23 formed on the back side by raising the underframe 22 on the floor surface, thereby increasing the cross-sectional area in the traveling direction of the vehicle. It is suitable for a low-floor vehicle because it is not made to protrude and does not protrude below the floor. Further, the underfloor equipment including the power storage device 4 to be installed can be supported easily and reliably in the immediate vicinity between the facing surfaces by using the surface of the frame 22 of the concavity 23 facing and any portion around it as a supporting portion. it can.

  As shown in FIG. 6, the recess 23 can be provided in the range of the installation area for the long sheet 31, a cross sheet (not shown), and a bed. Thereby, the recessed part 23 open | released outside is implement | achieved without narrowing a living space effectively using the lower space which arises in the installation area of various sheets and a bed, Utilizing the overlap with the recessed part 23 of various sheets and a bed They can be supported directly by the underframe 22 to satisfy their required installation height. Accordingly, the recessed portion 23 opened to the outside is realized without effectively reducing the living space by effectively using the lower space generated in the installation area of the various sheets such as the long sheet 31 and the cross sheet and the bed, and the recessed portions 23 of the various sheets and the bed. Can be supported directly on the underframe 22 by using the overlap with the guide rail 33, and the required installation height can be satisfied. The support is as shown in FIG. It is convenient for maintenance if it is appropriately performed so that it can be attached and detached with a simple connecting bracket 34 or the like.

  The heat exchange in the heat exchanging unit 3 is performed while ensuring exhaust that is greater than or equal to the necessary ventilation, thereby ensuring the necessary ventilation including the exhaust load in the heat exchanging unit 3. In addition, as the power storage device 4 at the present time, lithium ion batteries are both high and optimal in terms of output density and energy density.

  By the way, in addition to the auxiliary controller SIV20a and the inverter type main controller VVVF 20b shown in FIG. Examples of major equipment include heavy and bulky devices such as switches, brake controllers, high-speed circuit breakers, and switches.

Here, specific examples of the power storage device 4 include a secondary battery and a capacitor. In any case, depending on a dedicated charging device 9 such as a charging post in an overhead line-less section, charging of the power storage device 4 is performed in a range of charging voltage V ₁ > storage voltage V _B exceeding the maximum charging voltage of the power storage device 4. It can be performed stably by adjusting the charging voltage according to the above. However, in charging from the overhead line 8 in the overhead line section shown in FIG. 3, the magnitude relationship between the overhead line voltage V _S from the overhead line 8 and the stored voltage V _B of the power storage device 4 is equal to the nominal voltage V _k0. , when the V _B0, as shown in FIG. 4 (a), the maximum width V _K min~V _K max where different, vary V _B min~V _B max, fluctuations in V _B min~V _B max Is due to charging / discharging of the power storage device 9, and is specified for each power storage device 9. Large fluctuations in V _K min to V _K max are compared with the normal fluctuation ranges V _K 1 to V _K 2 due to changes in the transmission distance. Although it is temporary due to the regenerative effect, the magnitude relationship between the charging voltage V ₁ and the storage voltage V _B results in reverse discharge or excessive charging. In order to cope with this, a charging control circuit 41 is provided in the charging circuit from the overhead line 8 to the power storage device 4 as shown in FIG. 3, and the charging control circuit 41 causes the overhead voltage V _K to be within an appropriate range with respect to the stored voltage V _B. The charging voltage V _S is adjusted to be applied to the power storage device 9 and charged.

However, such voltage control is forced to control the overhead voltage V _K in two ways, sometimes increasing and sometimes decreasing, according to the magnitude of the relationship between the charging voltage V ₁ and the storage voltage V _B. As a result, the control function becomes complicated, large, heavy and expensive.

To solve this, the present inventor has per optimization control of the magnitude relation of the charging voltage V ₁ and the power storage voltage V _B, the nominal storage voltage V of power storage voltage V _B and the nominal overhead wire voltage V _K0 of trolley voltage V _{K A} difference between _B0 and a specific storage voltage V _{B0 with} respect to the nominal overhead line voltage V _{K0 is set} to −V _A shown in FIG. 4B or + V _A opposite to the difference.

Thus, when referred to in the example to differentiate the -V _A, also storage voltage V _B of the power storage device 9 fluctuates between V _B min and V _B max, overhead wire voltage V _K than the stored voltage V _B The lowering range is suppressed to V _KP, and the charging control in this case is only the step-down control. Conversely, in the example of adding the difference of + V _A , the storage voltage V _B of the storage device 9 is between V _B min and V _B max. Even if it fluctuates between, the range in which the overhead wire voltage V _K is higher than the storage voltage V _B is suppressed to + V _KP, and the charge control in this case is only boost control. Therefore, the charging control in any case can be simplified, and the apparatus can be reduced in size, weight, and cost. In addition, in connection with such charging control, charging control is unnecessary in the section without overhead lines. Therefore, in the example shown in FIG. 3, a bypass switch 42 is provided for the charging control circuit 41, and By turning on the bypass switch 42 and not operating the charge control circuit 41 during discharge running due to discharge from the power storage device 9, the control and device are further simplified, contributing to further miniaturization, weight reduction, and cost reduction. it can.

  Finally, the temperature control case 7 does not necessarily have to be provided outside the vehicle body 6, and can also be provided as a part of the vehicle body 6 or an installation in the vehicle body 6. Further, in the heat exchange between the power storage device 4 and the exhaust in the temperature control case 7, fresh air outside the vehicle 2 may be introduced and used together with the heat exchange, whereby the air volume necessary for the temperature control of the power storage device 4. However, it is possible to prevent the air conditioning load from being increased by exceeding the necessary ventilation amount.

  INDUSTRIAL APPLICABILITY The present invention can be practically used for a railway vehicle, and the power storage device can be operated in a predetermined temperature range with high efficiency in order to mount the power storage device and save energy of the railway vehicle.

It is a schematic diagram which shows the example of the rail vehicle which concerns on embodiment of this invention, and its air-conditioning system example by planar view. It is a block diagram which shows one charging / discharging system example of the electrical storage apparatus applied to the rail vehicle of FIG. It is a block diagram which shows another example of charging / discharging system of the electrical storage apparatus applied to the rail vehicle of FIG. The relationship between the nominal voltage and the voltage fluctuation range of the overhead line voltage and the storage voltage in the charge / discharge system shown in FIG. 2, and the nominal voltage and the voltage fluctuation range of the overhead line voltage and the storage voltage in the charge / discharge system shown in FIG. It is a graph which compares and shows a relationship example by (a) and (b). It is a perspective view which shows one specific example of arrangement | positioning of the electrical storage apparatus shown in FIG. It is a perspective view which shows another specific example of arrangement | positioning of the electrical storage apparatus shown in FIG. It is a schematic diagram which shows the example of the conventional railway vehicle, and its air conditioning system example by planar view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car interior 2 Car exterior 3 Air conditioning system 4 Power storage device 5 Heat exchange part 6 Car body 7 Temperature control case 8 Overhead wire 9 Charging control circuit 11 Blower fan 12 Intake fan 13 Exhaust fan 14, 16 Exhaust port 15 Exhaust inlet 20 Underfloor equipment 20a VVVF
20b SIV
21 Floor 22 Underframe 23 Recess 31 Long sheet 41 Charge control circuit 42 Bypass switch

Claims (9)

In a railway vehicle equipped with a ventilation air conditioning system that air-conditions the interior of the vehicle to a predetermined temperature range, with the introduction of fresh air into the vehicle and exhaust from the inside of the vehicle to the outside of the vehicle,
A power storage device that supplies electric power to a traveling electric device including an electric motor for traveling, and the exhaust from the inside of the vehicle that has been air-conditioned to the predetermined temperature range for this power storage device to a predetermined temperature range A railway vehicle characterized by comprising a heat exchanging section for forcibly controlling the temperature to be maintained.   The railway vehicle according to claim 1, wherein the heat exchange unit performs the heat exchange in a temperature control case that is provided outside the vehicle body and accommodates the power storage device.   The railway vehicle according to claim 1 or 2, wherein the exhaust fan is provided in a vehicle body or a temperature control case.   The underfloor according to any one of claims 2 and 3, wherein the temperature control case has an exhaust introduction port connected to an exhaust port of the vehicle body and an exhaust port for exhausting the exhaust gas after heat exchange with the power storage device to the outside. How to install the equipment.   The railway vehicle according to any one of claims 2 to 4, wherein the temperature control case includes a power storage module that stores a plurality of power storage cells that are heat generating elements, and a predetermined number of power storage modules are mounted in units of the power storage module.   A frame that supports or forms the floor of the vehicle body is raised on the floor surface, and a recess is formed on the back side of the vehicle body under and on the side of the vehicle body. The railway vehicle according to any one of claims 2 to 5, wherein the railway vehicle is accommodated and supported by the underframe.   The railway vehicle according to claim 6, wherein the recess is provided within a range of an installation area for the long seat, the cross seat, and the bed.   The railway vehicle according to claim 7, which is applied to a railway vehicle from a normal vehicle whose floor is higher than wheels to a low floor vehicle whose floor is lower than wheels.   The railway vehicle according to any one of claims 1 to 8, wherein the heat exchange in the heat exchange section is performed while ensuring an exhaust air that exceeds a necessary ventilation amount.

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