JP6087553B2 - Power storage device - Google Patents

Description

  The present invention relates to a power storage device.

  Patent Document 1 relates to a power storage device. The power storage device of Patent Document 1 includes a module battery. In the module battery, a unit cell group (collection battery 2) of sodium-sulfur batteries is accommodated in a container internal space formed inside the container (storage case 1). The transport channel formed in the channel forming body (the connecting pipe 6 and the branch pipe 7) communicates with the space in the container. In the event of a fire, the fire extinguisher is pumped through the transport channel and the space inside the container is filled with the fire extinguisher.

JP-A-5-317440

  In the power storage device of Patent Document 1, the space inside the container is filled with the extinguishing agent, but the amount of extinguishing agent that can be supplied is limited to the volume of the space inside the container. The present invention is made to solve this problem. An object of the present invention is to appropriately bury a module battery with a large amount of extinguishing agent and extinguish asphyxiation.

  The present invention is directed to a power storage device.

In the first aspect of the present invention, the unit cell group is housed in a container internal space formed inside the container. The module battery and the injection nozzle are housed in a space inside the housing formed inside the housing. The top surface of the container faces upward in the vertical direction. The spray nozzle sprays the expanded meteorite in the direction in which the expanded meteorite travels along the top surface, and passes the expanded meteorite above the top surface. The expanded vermiculite is pumped through the transport channel formed in the channel forming body. The transport channel reaches from the outside of the housing to the injection nozzle. An injection hole and an in-nozzle flow path are formed in the injection nozzle. The in-nozzle flow path leads to the transport flow path. The injection hole communicates with the flow path in the nozzle. The cross-sectional area of the flow path in the nozzle is larger than the cross-sectional area of the transport flow path. The opening area of the injection hole is smaller than the cross-sectional area of the transport channel.

In the second aspect of the present invention, the unit cell group is housed in a container internal space formed inside the container. The module battery, the first injection nozzle, and the second injection nozzle are accommodated in a space inside the case formed inside the case. The top surface of the container faces upward in the vertical direction. A depth direction and a width direction are defined in the container. A 1st injection nozzle injects an expansion stone in the direction in which an expansion stone advances along a top surface. The second injection nozzle injects the expanded meteorite in the direction in which the expanded meteorite travels along the top surface. The first injection nozzle is on one side from the center in the width direction of the container. The second injection nozzle is on the other side from the center in the width direction of the container. The first injection nozzle and the second injection nozzle inject the expanded stone from the near side to the far side. The expanded meteorite is pumped through the first transport channel formed in the first channel forming body. The first transport channel reaches from the outside of the housing to the first injection nozzle. The expanded vermiculite is pumped through the second transport channel formed in the second channel forming body. The second transport flow path reaches from the outside of the housing to the second injection nozzle. The collection port formed in the basket faces upward in the vertical direction. The collection port is arranged at a position near the top surface on the side surface on the back side. The basket is along the inner side of the container. The basket is at the center in the width direction of the container.

  The third aspect of the present invention adds further matters to the second aspect of the present invention. In the 3rd aspect of this invention, the 1st reflective surface formed in a 1st center derivative exists in one side from the center of the width direction of a container. The second reflecting surface formed on the second central derivative is on the other side from the center in the width direction of the container. The first reflection surface and the second reflection surface are further on the back side than the side surface on the back side of the container. The expanded meteorite that has been jetted by the first jet nozzle and collided with the first reflecting surface is reflected by the first reflecting surface and guided to the center in the width direction of the container. The expanded meteorite that has been injected by the second injection nozzle and collided with the second reflecting surface is reflected by the second reflecting surface and guided to the center in the width direction of the container.

The fourth aspect of the present invention adds further matters to the second or third aspect of the present invention. In the fourth aspect of the present invention, the cross section of the in-nozzle flow path formed in the injection nozzle is wider than the cross section of the transport flow path. The opening of the injection hole formed in the injection nozzle is narrower than the cross section of the transport channel. The injection hole communicates with the flow path in the nozzle. The in-nozzle flow path leads to the transport flow path.
The fifth aspect of the present invention adds a further matter to any one of the first to fourth aspects of the present invention. In the fifth aspect of the present invention, the flat surface of the structure faces the top surface.

The sixth aspect of the present invention adds further matters to any one of the first to fifth aspects of the present invention. In the sixth aspect of the present invention, the opening formed in the housing body is opened and closed by the door. The spray nozzle and the flow path forming body are attached to the door.

The seventh aspect of the present invention adds a further matter to any one of the first to fifth aspects of the present invention. In the seventh aspect of the present invention, the injection hole is formed in the injection nozzle body. There is a flow path forming body in the insertion hole formed in the coupling mechanism. The injection hole communicates with the insertion hole.

  The eighth aspect of the present invention adds further matters to any one of the first to seventh aspects of the present invention. In the eighth aspect of the present invention, the first divided body and the second divided body of the flow path forming body are connected. The first section of the transport channel is formed in the first divided body. The second section of the transport channel is divided into second divided bodies. The section section of the second section is not narrower than the section section of the first section. The second section is downstream of the first section.

In the ninth aspect of the present invention, the unit cell group is housed in a container inner space formed inside the container. The module battery and the injection nozzle are housed in a space inside the housing formed inside the housing. The top surface of the container faces upward in the vertical direction. The spray nozzle sprays the expanded meteorite in the direction in which the expanded meteorite travels along the top surface. The expanded vermiculite is pumped through the transport channel formed in the channel forming body. The transport channel reaches from the outside of the housing to the injection nozzle. The first divided body and the second divided body of the flow path forming body are connected. The first section of the transport channel is formed in the first divided body. The second section of the transport channel is divided into second divided bodies. The section section of the second section is not narrower than the section section of the first section. The second section is downstream of the first section. The connecting mechanism of the divided body connects the first divided body and the second divided body in a state where the end of the first divided body and the end of the second divided body are in contact with each other. An injection hole and an in-nozzle flow path are formed in the injection nozzle. The in-nozzle flow path leads to the transport flow path. The injection hole communicates with the flow path in the nozzle. The cross-sectional area of the flow path in the nozzle is larger than the cross-sectional area of the transport flow path. The opening area of the injection hole is smaller than the cross-sectional area of the transport channel.

  The tenth aspect of the present invention adds further matters to any one of the first to ninth aspects of the present invention. In the tenth aspect of the present invention, the radius of curvature of the center line of the curved section of the flow path is not less than 5 times and not more than 10 times the inner diameter of the curved section.

According to the first aspect of the present invention, the module battery is gradually covered with expanding stones from one side to the other side. Module batteries are properly buried with a large amount of expanded peridotite and extinguished by suffocation. Moreover, according to the 1st aspect of this invention, an expanded vermiculite is injected vigorously. Expanded vermiculite is less likely to clog the flow path.

  According to the second aspect of the present invention, the expanded vermiculite that has reached near the center in the width direction of the container is collected in the basket. At the center in the width direction of the container, the side surface on the back side of the container is easily covered with an expanded stone. Module batteries are properly buried with expanded peridotite and extinguished by suffocation.

  According to the third aspect of the present invention, the expanded vermiculite reaching near the center in the width direction of the container increases. Many swelling stones are collected in the basket. Module batteries are properly buried with expanded peridotite and extinguished by suffocation.

According to the fourth aspect of the present invention, the expanded vermiculite is jetted vigorously. Expanded vermiculite is less likely to clog the flow path.
According to the fifth aspect of the present invention, the gas flow is less likely to be disturbed. Expanding vermiculite efficiently passes above the top.

According to the sixth aspect of the present invention, when the door is opened, the module battery can be reached without the interference of the injection nozzle and the flow path forming body. Maintenance of the module battery is facilitated.

  According to the 7th aspect of this invention, the cross section of a flow path spreads in the connection location of an injection nozzle and a flow path formation body. Expanded vermiculite is less likely to clog the flow path.

  According to the 8th aspect of this invention, the cross section of a flow path is not narrowed in the connection location of a 1st division body and a 2nd division body. Expanded vermiculite is less likely to clog the channel.

According to the ninth aspect of the present invention, the expanded vermiculite is jetted vigorously. Expanded vermiculite is less likely to clog the flow path.
According to the tenth aspect of the present invention, the expanded vermiculite is less likely to clog the flow path. The flow path forming body does not become too large.

  These and other objects, features, aspects and advantages of the invention will become more apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.

It is a front view of a power storage device. It is a perspective view of a module battery and its surrounding components. It is a side view of a module battery and its surrounding components. It is a top view of a module battery and its surrounding components. It is sectional drawing of a module battery. It is a perspective view of an injection nozzle. It is sectional drawing of an injection nozzle. It is sectional drawing of a composite transport pipe. It is a side view of the state in which the module battery is being embedded in the expansion stone. It is a perspective view of a slide base. It is a mimetic diagram showing relations, such as a section of a transportation channel. It is sectional drawing of the connection structure of an injection nozzle and a composite transport pipe.

(Outline)
This embodiment relates to a power storage device incorporating a mechanism for extinguishing fire.

  The schematic diagram of FIG. 1 is a front view of the power storage device. The schematic diagram of FIG. 2 is a perspective view of a module battery and its surrounding components. The schematic diagram of FIG. 3 is a side view of the module battery and its surrounding components. The schematic diagram of FIG. 4 is a top view of the module battery and the surrounding components. The schematic diagram of FIG. 5 is a cross-sectional view of the module battery. The schematic diagram of FIG. 6 is a perspective view of an injection nozzle. The schematic diagram of FIG. 7 is a cross-sectional view of the injection nozzle. The schematic diagram of FIG. 8 is a cross-sectional view of the composite transport pipe.

  As shown in FIG. 1, the power storage device 1000 includes a housing 1020, a module battery 1021, a fire extinguishing mechanism 1022, and a housing wiring 1023. The power storage device 1000 includes one or two or more module batteries in the housing 1020, and includes a mechanism for extinguishing the fire as many as the number of module batteries. One fire extinguishing mechanism is associated with one module battery. When the power storage device 1000 includes two or more module batteries, the two or more module batteries may be arranged in the vertical direction. Two or more module batteries may be arranged in the horizontal direction. In some cases, two or more module batteries are arranged in the vertical direction, and two or more module batteries arranged in the vertical direction are further arranged in the horizontal direction. The number of module batteries is increased or decreased according to the specifications of the power storage device 1000.

  The housing 1020 includes a housing body 1040 and a double door 1041. The double door 1041 includes a left door 1060 and a right door 1061.

  As shown in FIGS. 2 to 4, the fire extinguishing mechanism 1022 includes a left injection nozzle 1080, a right injection nozzle 1081, a left composite transport pipe 1082, a right composite transport pipe 1083, a basket 1084, A center guide plate 1085, a right center guide plate 1086, and a fire spread prevention plate 1087 are provided.

  As shown in FIG. 5, the module battery 1021 includes a container 1100, a cell group 1101 of sodium-sulfur batteries, an in-container wiring 1102, a terminal 1103, sand 1104, and a slide base 1105. The number of single cells included in the single cell group 1101 is increased or decreased according to the specifications of the module battery 1021.

  The container 1100 includes a box 1120 and a lid 1121. The container 1100 is disposed on the upper surface 1520 of the slide base 1105.

  As shown in FIGS. 6 and 7, each of the left injection nozzle 1080 and the right injection nozzle 1081 includes an injection nozzle body 1140 and a transport pipe connecting portion 1141. The transport pipe connecting portion 1141 includes a cylinder 1160 and a set screw 1161. The structures of the left injection nozzle 1080 and the right injection nozzle 1081 may be different.

  As shown in FIG. 8, each of the left composite transport pipe 1082 and the right composite transport pipe 1083 includes a non-curved transport pipe 1220, a first coupling 1221, a curved transport pipe 1222, and a second coupling 1223. . The structure of the left composite transport pipe 1082 and the right composite transport pipe 1083 may be different.

  Components other than these components may be added to the power storage device 1000. Some of these components may be omitted from the power storage device 1000.

  The module battery 1021 is charged / discharged via the in-casing wiring 1023 shown in FIG. When the module battery 1021 is charged / discharged, the cell group 1101 belonging to the module battery 1021 to be charged / discharged is charged / discharged via the in-container wiring 1102 shown in FIG. The in-casing wiring 1023 and the in-container wiring 1102 are electrically connected via a terminal 1103. The power storage device 1000 is preferably electrically connected to an electric power system, and is used for adjustment of power supply and demand, prevention of power failure, and the like.

  As shown in FIG. 8, a transport channel 1260 is formed in each of the left composite transport pipe 1082 and the right composite transport pipe 1083. As shown in FIG. 1, when a fire occurs in the module battery 1021, the discharge port 9001 of the mechanism 9000 that supplies a mixed flow of expanded peridotite and pressurized gas is provided on the left composite transport pipe 1082 and the right composite transport pipe 1083. Are connected to the supply port 1270, and a mixed flow of expanded meteorite and pressurized gas is supplied to the transport channel 1260.

  The expanded meteorite supplied to the supply port 1270 of the transport channel 1260 is pumped to the left injection nozzle 1080 and the right injection nozzle 1081 via the transport channel 1260, and the left injection nozzle 1080 and the right injection nozzle. 1081 is injected. The expanded meteorite sprayed by the left spray nozzle 1080 and the right spray nozzle 1081 travels along the top surface 1280 of the container 1100.

  The left injection nozzle 1080 and the right injection nozzle 1081 inject the expanding stone in the depth direction D of the container 1100 and in the direction from the near side to the far side. As shown in FIG. 9, the module battery 1021 is embedded in a stone 1090 that gradually expands from the back side to the near side, and is appropriately extinguished by suffocation.

(Characteristics of expanded vermiculite)
The expanded vermiculite 1090 is useful as a fire extinguishing agent for suffocation, and is recognized as a type 5 fire fighting facility in the Japanese Fire Service Act. The expanded vermiculite 1090 has properties different from those of granular materials such as sand and ceramic powder. For example, the expanded vermiculite 1090 has a small specific gravity, a large porosity, and a compressibility. For this reason, when the extinguishing agent is the expanded gravel 1090, the module battery 1021 is not easily damaged, and the power required for transportation and injection of the extinguishing agent is reduced. On the other hand, when the fire extinguishing agent is the expansion stone 1090, the fire extinguishing agent tends to clog the flow path.

  The fire-extinguishing mechanism 1022 can transport the expanded meteorite 1090 without delay and inject it without delay, and operates reliably in an emergency.

  There is a desirable range for the ratio of expanded vermiculite 1090 in the mixed flow of expanded vermiculite 1090 and pumped gas. When the ratio of the expanded vermiculite 1090 is large, the pumped gas required to transport and inject the expanded vermiculite 1090 is reduced, but the expanded vermiculite 1090 is likely to be clogged in the flow path. When the ratio of the expanded vermiculite 1090 is small, the expanded vermiculite 1090 is less likely to be clogged in the flow path, but more pumping gas is required to transport and inject the expanded vermiculite 1090.

  In the mixed flow of the expanded vermiculite 1090 and the pumped gas, preferably, an amount of the pumped gas 10 to 20 times the apparent volume of the expanded vermiculite 1090 is used. Thereby, the expanded vermiculite 1090 is transported without delay. When the amount of the pressurized gas is decreased from this range, the expanded meteorite is likely to be clogged in the transport channel 1260. When the amount of the pressurized gas increases from this range, the pressurized gas is wasted.

(Container housing)
As shown in FIGS. 1, 3, and 4, a housing internal space 1300 is formed inside the housing 1020. The module battery 1021, the fire extinguishing mechanism 1022, and the housing wiring 1023 are accommodated in the housing space 1300. Control equipment, power equipment, air-conditioning equipment, and the like may be housed in the housing interior space 1300. In some cases, the supply port 1270 of the left composite transport pipe 1082 and the right composite transport pipe 1083 jumps out of the housing 1020.

(Container contents)
As shown in FIG. 5, the lid body 1121 is placed over the opening of the box body 1120, and a container internal space 1320 is formed inside the container 1100. The unit cell group 1101, the in-container wiring 1102, and the sand 1104 are accommodated in the in-container space 1320. A heater, a temperature sensor, and the like may be accommodated in the container inner space 1320.

(Expansion stone flow path)
As shown in FIGS. 6 and 7, the injection nozzle body 1140 is formed with an injection hole 1340 and an in-nozzle flow path 1341. The tube 1160 is formed with a non-curved transport tube insertion hole 1360. The injection hole 1340 communicates with the in-nozzle channel 1341 and with the non-curved transport pipe insertion hole 1360 through the in-nozzle channel 1341. The in-nozzle flow path 1341 communicates with the non-curved transport pipe insertion hole 1360. The in-nozzle channel 1341 communicates with the transport channel 1260.

  As shown in FIG. 8, the non-curved section 1420 of the transport channel 1260 is formed in the non-curved transport pipe 1220. A curved section 1421 of the transport channel 1260 is formed in the curved transport pipe 1222. The transport channel 1260 extends from the outside of the housing 1020 to the left injection nozzle 1080 and the right injection nozzle 1081. Supply port 1270 is exposed to the outside of housing 1020. The transport channel 1260 has a structure capable of pumping the expanded granite 1090. For example, the inner diameter, cross-sectional shape, radius of curvature, etc. of the transport channel 1260 are selected such that the expanded meteorite 1090 can be pumped.

  When the mixed flow of the expanded granite 1090 and the pumped gas is supplied to the transport channel 1260, the expanded vermiculite 1090 sequentially passes through the curved section 1421 and the non-curved section 1420, and the left spray nozzle 1080 and the right spray. Pumped to the nozzle 1081. The expanded vermiculite 1090 is injected from the injection hole 1340 via the in-nozzle flow path 1341. The expanded vermiculite 1090 is mainly injected in the direction in which the injection hole 1340 faces.

(Surface of container)
As shown in FIGS. 2 to 4, the top surface 1280 of the container 1100 extends in the depth direction D and the width direction W and faces upward in the vertical direction. The front side surface 1281 and the back side surface 1282 of the container 1100 extend in the height direction H and the width direction W and are separated in the depth direction D of the container 1100. Both or one of the front side surface 1281 and the back side surface 1282 of the container 1100 may be inclined. Although the height direction H of the container 1100 is a vertical direction, the depth direction D and the width direction W of the container 1100 are arbitrarily defined. The long direction is not necessarily the width direction W. The direction in which the expanded vermiculite 1090 is mainly injected is the depth direction D, and the direction in which the injected expanded vermiculite 1090 travels is the direction from the near side to the far side.

(Embedded in the middle with expanded peridotite)
As shown in FIGS. 2 to 4, the basket 1084 extends along the back side surface 1282 of the container 1100. The basket 1084 is in the center of the container 1100 in the width direction W. The collection port 1460 formed in the basket 1084 faces upward in the vertical direction. The collection port 1460 is disposed at a position near the top surface 1280 of the container 1100 on the side surface 1282 on the back side of the container 1100, and is closer to the top surface 1280 of the container 1100 than the bottom surface of the container 1100. When viewed from the depth direction D of the container 1100, the shape of the cage 1084 is an inverted triangle.

  The left injection nozzle 1080 is on the left side of the center in the width direction W of the container 1100. The right injection nozzle 1081 is on the right side of the center of the container 1100 in the width direction W.

  The expanded vermiculite 1090 is mainly injected to the front of the left injection nozzle 1080 and the right injection nozzle 1081. The expansion meteorite 1090 injected by the left injection nozzle 1080 decreases as the distance from the front of the left injection nozzle 1080 increases. The expansion meteorite 1090 injected by the right injection nozzle 1081 decreases as the distance from the front of the right injection nozzle 1081 increases. A small amount of expanded vermiculite 1090 reaches the center of the container 1100 in the width direction W. When the cage 1084 is at the center in the width direction W of the container 1100, the expanded vermiculite 1090 that has reached near the center in the width direction W of the container 1100 is collected by the cage 1084. As a result, the inner side surface 1282 of the container 1100 at the center in the width direction W of the container 1100 is easily covered with the expanded meteorite 1090, and the module battery 1021 is appropriately embedded with the expanded meteorite 1090 and extinguished by suffocation. However, even when the cage 1084 is omitted, the usefulness of the mechanism 1022 for extinguishing the fire is not completely lost. For example, when an injection nozzle is added at the center in the width direction W of the container 1100, the module battery 1021 is appropriately embedded with the expanded stone 1090 and extinguished by suffocation even if the cage 1084 is omitted. However, the spray nozzle at the center in the width direction W of the container 1100 is difficult to fix to the double door 1041, and tends to be an obstacle to the maintenance of the module battery 1021. When the width of the container 1100 is narrow, the basket 1084 may be omitted, and only the injection nozzle at the center in the width direction W of the container 1100 may be provided instead of the left injection nozzle 1080 and the right injection nozzle 1081.

  The left injection nozzle 1080 and the right injection nozzle 1081 are desirably installed symmetrically with respect to the center of the container 1100 in the width direction W. Thus, the module battery 1021 is uniformly embedded in the expanded meteorite 1090 in the width direction W of the container 1100.

  The left injection nozzle 1080 and the right injection nozzle 1081 are preferably installed near the front side surface 1281 of the container 1100. Thereby, the module battery 1021 is uniformly embedded in the expanded stone 1090 up to the near side of the container 1100.

  The left injection nozzle 1080 and the right injection nozzle 1081 are preferably in contact with the top surface 1280 of the container 1100.

(Induction of expanded peridotite to the center)
As shown in FIGS. 2 and 4, the reflective surface 1480 of the left central guide plate 1085 is on the left side of the center in the width direction W of the container 1100. The reflection surface 1500 of the right central guide plate 1086 is on the right side of the center in the width direction W of the container 1100. The reflective surface 1480 of the left central guide plate 1085 and the reflective surface 1500 of the right central guide plate 1086 are further on the back side than the back side surface 1282 of the container 1100.

  The reflection surface 1480 of the left central guide plate 1085 faces in the depth direction D of the container 1100 toward the center in the width direction W of the container 1100 and faces in the direction from the back side toward the near side. Near the edge, it is curved toward the front side. The expanded meteorite 1090 that has been injected by the left injection nozzle 1080 and collided with the reflection surface 1480 of the left central guide plate 1085 is reflected by the reflection surface 1480 of the left central guide plate 1085 and guided to the center of the container 1100 in the width direction W. Is done.

  The reflection surface 1500 of the right central guide plate 1086 faces in the depth direction D of the container 1100 toward the center in the width direction W of the container 1100 and faces in the direction from the back side toward the near side. Near the edge, it is curved toward the front side. The expanded meteorite 1090 that has been injected by the right injection nozzle 1081 and collided with the reflection surface 1500 of the right center guide plate 1086 is reflected by the reflection surface 1500 of the right center guide plate 1086 and guided to the center of the container 1100 in the width direction W. Is done.

  Thereby, the expanded meteorite 1090 which reaches near the center of the width direction W of the container 1100 increases. The expanded vermiculite 1090 collected in the basket 1084 increases, and the module battery 1021 is appropriately embedded with the expanded vermiculite 1090 and extinguished by suffocation.

  The left center guide plate 1085 and the right center guide plate 1086 are preferably in contact with the top surface 1280 of the container 1100.

  The left central guide plate 1085 may be replaced with an object that cannot be called a plate having a reflective surface similar to the reflective surface 1480. The right central guide plate 1086 may be replaced by an object that cannot be called a plate having a reflective surface similar to the reflective surface 1500. For example, both or one of the left central guide plate 1085 and the right central guide plate 1086 may be replaced with a block, a sheet, or the like.

(Stabilization of gas flow)
As shown in FIGS. 2 and 3, the container 1100 is installed on the upper surface 1520 of the slide base 1105. The container 1100 and the slide base 1105 are integrated. A fire spread prevention plate 1087 is attached to the lower surface 1521 of the slide base 1025 of the upper module battery. The fire spread prevention plate 1087 is made of a heat resistant material.

  The lower surface 1540 of the fire spread prevention plate 1087 is a flat surface and faces the top surface 1280 of the container 1100. As a result, the gas flow is less likely to be disturbed by the slide base 1025. When the gas flow is not disturbed, the expanded vermiculite 1090 efficiently passes above the top surface 1280 of the container 1100. In particular, as shown in FIG. 10, when the upper slide base 1025 has a slat structure in which rods 1550 extending in a direction perpendicular to the depth direction D through which the gas flows are arranged, the gas flow flows to the upper slide base 1025. Since it is easily disturbed, the gas flow is remarkably stabilized by the fire spread prevention plate 1087. The material of the fire spread prevention plate 1087 may be other than the heat resistant material. For example, the material of the fire spread prevention plate 1087 may be a metal.

(Installation of injection nozzle and composite transport pipe)
As shown in FIG. 4, the opening 1560 of the housing body 1040 is opened and closed by a double door 1041. The double door 1041 is opened mainly when the power storage device 1000 is maintained.

  As shown in FIGS. 3 and 4, the left injection nozzle 1080 and the left composite transport pipe 1082 are attached to the left door 1060 and move together with the left door 1060. The right injection nozzle 1081 and the right composite transport pipe 1083 are attached to the right door 1061 and move together with the right door 1061. Thus, when the double door 1041 is opened, the module battery 1021 can be reached without being interfered by the left injection nozzle 1080, the right injection nozzle 1081, the left composite transport pipe 1082, and the right composite transport pipe 1083. Maintenance of the module battery 1021 is facilitated. However, even when all or part of the left injection nozzle 1080, the right injection nozzle 1081, the left composite transport pipe 1082, and the right composite transport pipe 1083 are attached to other than the double door 1041, the fire extinguishing mechanism 1022 The usefulness is not completely lost.

  The double door 1041 may be replaced with a single door. When the double door 1041 is replaced with a single door, preferably the left injection nozzle 1080, the right injection nozzle 1081, the left composite transport pipe 1082, and the right composite transport pipe 1083 are fixed to the single door.

(Relationship between cross section of transport flow path, cross section of flow path in nozzle and opening of injection hole)
The schematic diagram of FIG. 11 shows the relationship between the cross section of the transport flow path, the cross section of the flow path in the nozzle, and the opening of the injection hole.

  As shown in FIG. 11, the cross section of the in-nozzle flow path 1341 is wider than the cross section of the transport flow path 1260. The opening of the injection hole 1340 is narrower than the cross section of the transport channel 1260. The cross-sectional area of the in-nozzle channel 1341 is larger than the cross-sectional area of the transport channel 1260. The opening area of the injection hole 1340 is smaller than the cross-sectional area of the transport channel 1260.

  When the opening of the injection hole 1340 is narrower than the cross section of the transport channel 1260, the expanded meteorite 1090 is jetted vigorously. However, when the opening of the injection hole 1340 is simply narrower than the cross section of the transport channel 1260, the expanded meteorite 1090 tends to clog the channel. In particular, when the ratio of the expanded vermiculite 1090 in the mixed flow of the expanded vermiculite 1090 and the pumped gas is large, the expanded vermiculite 1090 tends to clog the flow path.

  When the cross section of the nozzle inner flow path 1341 is expanded from the cross section of the transport flow path 1260, the expanded meteorite 1090 is not easily clogged in the flow path even if the opening of the injection hole 1340 is narrower than the cross section of the transport flow path 1260. .

  However, even if the above relationship is not satisfied, the usefulness of the mechanism 1022 for fire fighting is not completely lost. For example, when the ratio occupied by the expanded vermiculite 1090 in the mixed flow is small, the expanded vermiculite 1090 is less likely to clog the flow path even when the above relationship is not satisfied. However, when the ratio occupied by the expanded vermiculite 1090 is small, the time required for embedding the module battery 1021 with the expanded vermiculite 1090 becomes longer, and a lot of pumping gas is required.

  The cross-sectional shape of the in-nozzle flow path 1341 and the opening shape of the injection hole 1340 are rectangular. The cross-sectional shape of the in-nozzle channel 1341 may be other than a rectangle. The opening shape of the injection hole 1340 may be other than a rectangle.

  In the front end portion 1580 and the rear end portion 1582 of the in-nozzle passage 1341 shown in FIG. 7, the width and height of the cross section of the in-nozzle passage 1341 are constant, and the cross-sectional area of the in-nozzle passage 1341 is constant. . In the intermediate portion 1581 of the in-nozzle flow path 1341 shown in FIG. 7, the cross-sectional width of the in-nozzle flow path 1341 is constant, but the cross-sectional height of the in-nozzle flow path 1341 is the front end portion from the rear end portion 1582 side. The cross-sectional area of the in-nozzle flow path 1341 continuously decreases from the rear end portion 1582 side to the front end portion 1580 side. The direction in which the in-nozzle flow path 1341 extends is the vertical direction at the rear end portion 1582, is bent 90 ° from the vertical direction to the horizontal direction at the intermediate portion 1581, and is the horizontal direction at the front end portion 1580. The radius of curvature of the intermediate inner curved plate 1584 serving as the inner peripheral side wall of the intermediate portion 1581 and the intermediate outer curved plate 1585 serving as the outer peripheral side wall of the intermediate portion 1581 is preferably 5 which is the height of the cross section of the front end portion 1580. It is not less than 10 times and not more than 10 times. When the radius of curvature is within this range, the expanded meteorite 1090 is less likely to clog the nozzle flow path 1341, and the intermediate portion 1581 does not become too large. When the radius of curvature is smaller than this range, the expanded vermiculite 1090 tends to clog the nozzle flow path 1341. When the curvature radius is larger than this range, the intermediate portion 1581 becomes large.

(Connection of injection nozzle and composite transport pipe)
The schematic diagram of FIG. 12 is a cross-sectional view of the connection structure of the injection nozzle and the composite transport pipe.

  As shown in FIG. 12, the non-curved transport tube 1220 is inserted into the non-curved transport tube insertion hole 1360. The non-curved transport tube 1220 is fixed by a set screw 1161.

  When the non-curved transport pipe 1220 is inserted into the non-curved transport pipe insertion hole 1360 formed in the cylinder 1160, the cross section of the flow path is widened at the connection point of the left injection nozzle 1080 and the left composite transport pipe 1082, and the right side The cross section of the flow path is widened at the connection point between the injection nozzle 1081 and the right composite transport pipe 1083. As a result, the expanded vermiculite 1090 is less likely to clog the flow path.

  The non-curved transport tube 1220 may be fixed by a fixing mechanism other than the set screw 1161. For example, the non-curved transport tube 1220 may be fixed by a claw, a band, a tape, an adhesive, or the like. A filler may be filled in the gap between the outer peripheral surface of the non-curved transport pipe 1220 and the inner peripheral surface of the tube 1160. For example, the gap may be filled with a silicon sealant. The left injection nozzle 1080 and the left composite transport pipe 1082 may be connected by a connecting mechanism other than the transport pipe connecting portion 1141. The right injection nozzle 1081 and the right composite transport pipe 1083 may be connected by a connecting mechanism other than the transport pipe connecting portion 1141. For example, the left injection nozzle 1080 and the left composite transport pipe 1082 may be connected by a flange pair. The right injection nozzle 1081 and the right composite transport pipe 1083 may be connected by a flange pair.

  The cross-sectional shape of the non-curved transport tube insertion hole 1360 is circular. The cross-sectional shape of the non-curved transport tube insertion hole 1360 should match the cross-sectional shape of the non-curved transport tube 1220 to be inserted. For this reason, the cross-sectional shape of the non-curved transport tube insertion hole 1360 may be other than circular.

(Connection structure of curved transport pipe and non-curved transport pipe)
As shown in FIG. 8, each of the left composite transport pipe 1082 and the right composite transport pipe 1083 includes two divided bodies, a non-curved transport pipe 1220 and a curved transport pipe 1222. Both or one of the left composite transport pipe 1082 and the right composite transport pipe 1083 may be composed of three or more divided bodies. One or both of the left composite transport pipe 1082 and the right composite transport pipe 1083 may be replaced with one transport pipe.

  The non-curved transport tube 1220 is connected to the curved transport tube 1222. The non-curved section 1420 leads to the curved section 1421. The non-curved section 1420 is downstream from the curved section 1421.

  The non-curved transport tube 1220 and the curved transport tube 1222 are connected by the first coupling 1221 in a state where the upstream end 1660 of the non-curved transport tube 1220 and the downstream end 1650 of the curved transport tube 1222 are in contact with each other. The The non-curved transport tube 1220 and the curved transport tube 1222 may be coupled by a coupling mechanism other than the first coupling 1221. The cross-sectional shape of the non-curved section 1420 and the cross-sectional shape of the curved section 1421 are the same. The cross section of the flow path does not widen or narrow at the connection point between the non-curved transport pipe 1220 and the curved transport pipe 1222. For this reason, the expanded vermiculite 1090 is less likely to clog the flow path. The cross section of the non-curved section 1420 may be wider than the cross section of the curved section 1421, and the cross section of the flow path may be widened at the connection point between the non-curved transport pipe 1220 and the curved transport pipe 1222.

(curvature radius)
As shown in FIG. 8, the radius of curvature of the center line 1610 of the curved section 1421 is desirably 5 to 10 times the inner diameter of the curved section 1421. When the radius of curvature is within this range, the expanded meteorite 1090 is less likely to clog the flow path, and the curved transport tube 1222 does not become too large. When the radius of curvature is smaller than this range, the expanded vermiculite 1090 tends to clog the flow path. If the radius of curvature is greater than this range, the curved transport tube 1222 will be too large. When the transport channel 1260 includes two or more curved sections 1421, all the curved sections 1421 desirably satisfy the above-described conditions.

(Connection form of mechanism for supplying expanded peridotite and pumped gas)
As shown in FIG. 8, the curved transport tube 1222 and the discharge port 9001 are connected by the second coupling 1223 in a state where the upstream end portion 1670 of the curved transport tube 1222 and the end portion 9002 of the discharge port 9001 are in contact with each other. The The curved transport tube 1222 and the discharge port 9001 may be connected by a connection mechanism other than the second coupling 1223. The cross-sectional shape of the curved section 1421 and the cross-sectional shape of the channel 1422 formed in the discharge port 9001 are the same. The cross section of the flow path does not widen or narrow at the connection point between the curved transport pipe 1222 and the discharge port 9001. For this reason, the expanded vermiculite 1090 is less likely to clog the flow path. The cross section of the curved section 1421 may be wider than the cross section of the flow path 1422 formed in the discharge port 9001, and the cross section of the flow path may be widened at the connection point between the curved transport pipe 1222 and the discharge port 9001.

  While the invention has been shown and described in detail, the above description is illustrative in all aspects and not restrictive. Accordingly, it is understood that numerous modifications and variations can be devised without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1000 Power storage device 1020 Case 1021 Module battery 1022 Fire extinguishing mechanism 1080 Left side injection nozzle 1081 Right side injection nozzle 1082 Left side composite transport pipe 1083 Right side composite transport pipe 1084 Basket 1085 Left center guide plate 1086 Right center Guide plate 1087 Fire spread prevention plate 1100 Container 1101 Cell group

Claims (10)

A unit cell group and a container, the container includes a top surface, the top surface faces vertically upward, an interior space of the container is formed inside the container, and the unit cell group is accommodated in the interior space of the container. Module battery
A housing in which a housing space is formed, and the module battery is accommodated in the housing space;
An injection nozzle which is accommodated in the space in the housing and injects the expanded meteorite in the direction in which the expanded meteorite travels along the top surface, and allows the expanded meteorite to pass above the top surface;
A transport flow path is formed, the expanded granite is pumped through the transport flow path, and the transport flow path from the outside of the housing to the injection nozzle, the flow path forming body,
Equipped with a,
An injection hole and a nozzle flow path are formed in the injection nozzle,
The flow path in the nozzle leads to the transport flow path, and the cross-sectional area of the flow path in the nozzle is larger than the cross-sectional area of the transport flow path,
The power storage device , wherein the injection hole communicates with the flow path in the nozzle, and an opening area of the injection hole is smaller than a cross-sectional area of the transport flow path .   A unit cell group and a container, the container includes a top surface, the top surface faces vertically upward, an interior space of the container is formed inside the container, and the unit cell group is accommodated in the interior space of the container. A module battery in which a depth direction and a width direction are defined in the container, and the container includes a front side surface and a back side surface;
  A housing in which a housing space is formed, and the module battery is accommodated in the housing space;
  It is accommodated in the internal space of the casing, and injects the expanded meteorite in the direction in which the expanded meteorite travels along the top surface, and is located on one side from the center in the width direction of the container and expands from the near side to the far side. A first injection nozzle for injecting vermiculite;
  A first transport channel is formed, the expanded meteorite is pumped through the first transport channel, and the first transport channel reaches from the outside of the housing to the first injection nozzle. A first flow path forming body;
  It is accommodated in the space in the housing, and injects the expanded meteorite in the direction in which the expanded meteorite travels along the top surface, is located on the other side from the center in the width direction of the container, and expands from the near side to the far side. A second injection nozzle for injecting vermiculite;
  A second transport channel is formed, the expanded meteorite is pumped through the second transport channel, and the second transport channel reaches from the outside of the housing to the second injection nozzle. A second flow path forming body;
  A collection port is formed, the collection port faces vertically upward, the collection port is disposed at a position near the top surface on the back side surface, along the back side surface, and the container A basket in the center of the width direction of
A power storage device comprising: A first reflecting surface is formed, and the first reflecting surface is on one side from the center in the width direction of the container and further on the back side than the side surface on the back side, and is jetted by the first jet nozzle. A first central derivative that reflects and guides the expanded meteorite colliding with the first reflecting surface to the center in the width direction of the container;
A second reflecting surface is formed, the second reflecting surface is on the other side from the center in the width direction of the container and further on the back side than the side surface on the back side, and is injected by the second injection nozzle. A second central derivative that reflects and guides the expanded meteorite colliding with the second reflecting surface to the center in the width direction of the container;
The power storage device according to claim 2, further comprising: The transport channel has a first cross section;
An injection hole and a nozzle flow path are formed in the injection nozzle,
The flow path in the nozzle has a second cross section that extends to the transport flow path and is wider than the first cross section;
4. The power storage device according to claim 2 , wherein the injection hole has an opening that communicates with the flow path in the nozzle and is narrower than the first cross section. A structure having a flat surface, the flat surface facing the top surface;
Further comprising
The power storage device according to any one of claims 1 to 4 . The housing is
A housing body in which an opening is formed;
A door to open and close the opening and to which the injection nozzle and the flow path forming body are attached;
The power storage device according to any one of claims 1 to 5, further comprising: The spray nozzle is
An injection nozzle body in which an injection hole and a flow path in the nozzle are formed;
The insertion hole is formed, a coupling mechanism wherein the injection hole is the through the insertion hole, there is the flow path structure wherein the insertion hole,
The power storage device according to claim 1, further comprising: The flow path forming body is:
A first divided body;
A second divided body coupled to the first divided body;
With
The transport channel is
A first section formed in the first divided body and having a first section section;
A second section formed in the second divided body, leading to the first section, downstream of the first section, and having a second section section that is not narrower than the first section section; ,
The power storage device according to any one of claims 1 to 7, further comprising: A unit cell group and a container, the container includes a top surface, the top surface faces vertically upward, an interior space of the container is formed inside the container, and the unit cell group is accommodated in the interior space of the container. Module battery
A housing in which a housing space is formed, and the module battery is accommodated in the housing space;
An injection nozzle that is accommodated in the space in the housing and injects the expanded meteorite in a direction in which the expanded meteorite travels along the top surface;
A transport flow path is formed, the expanded granite is pumped through the transport flow path, and the transport flow path from the outside of the housing to the injection nozzle, the flow path forming body,
With
The flow path forming body is:
A first divided body;
A second divided body coupled to the first divided body;
A connecting mechanism of the divided body for connecting the first divided body and the second divided body in a state where the end of the first divided body and the end of the second divided body are in contact with each other;
With
The transport channel is
A first section formed in the first divided body and having a first section section;
A second section formed in the second divided body, leading to the first section, downstream of the first section, and having a second section section that is not narrower than the first section section; ,
Equipped with a,
An injection hole and a nozzle flow path are formed in the injection nozzle,
The flow path in the nozzle leads to the transport flow path, and the cross-sectional area of the flow path in the nozzle is larger than the cross-sectional area of the transport flow path,
The power storage device , wherein the injection hole communicates with the flow path in the nozzle, and an opening area of the injection hole is smaller than a cross-sectional area of the transport flow path . The flow path is
With a curved section,
The power storage device according to any one of claims 1 to 9, wherein a radius of curvature of a center line of the curved section is not less than 5 times and not more than 10 times an inner diameter of the curved section.

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