JP2015156947A - Fire-fighting equipment for battery cabinet - Google Patents

Abstract

A battery fired in a cabinet is extinguished quickly and reliably. In a sealed cabinet 1 in which a battery is accommodated, a tube 10 that is pierced by heat due to the fire of the battery is disposed, and a cylinder 9 filled with a fire extinguishing agent and a high-pressure gas is disposed. In the fire extinguishing equipment of the battery cabinet in which the tube 10 is communicated, the fire extinguishing agent and the high-pressure gas are injected into the inside of the cabinet 1, and the pressure inside the cabinet 1 is increased and the pressure inside the cabinet 1 is lowered. A closed deaeration unit 8 is provided in a part of the cabinet 1. [Selection] Figure 2

Description

  The present invention relates to a cabinet that houses a battery (secondary battery) such as a lithium ion battery, and more particularly to equipment for extinguishing a battery built in the cabinet.

  This type of single cells are connected in series or in parallel to form a stack, which is housed in a cabinet together with a control panel and used as power supply equipment. The storage battery housed in the cabinet is protected from foreign matters such as dust and water, and accidents such as accidental contact of workers and the like are prevented. However, it is not possible to completely eliminate the possibility that an overcurrent flows due to deterioration of the wiring or the like or abnormality or deterioration of the storage battery, resulting in a fire. Therefore, conventionally, a fire extinguishing facility has been provided in a power source using a storage battery. For example, in Patent Document 1, a large number of injection holes are formed inside a chamber in which batteries are arranged in multiple stages. Electromagnetic valve that opens when a sensor detects that a fire has occurred inside the chamber, while arranging a plurality of long pipe-shaped nozzles facing up and down, and a fire extinguisher tank outside the chamber A fire extinguishing apparatus having a configuration in which each of the nozzles and a fire extinguishing agent tank are connected to each other is described.

  Patent Document 2 describes an apparatus configured to automatically inject a fire extinguishing agent when a fire occurs. The fire extinguisher is filled with a fire extinguisher and high-pressure gas in a high-pressure vessel, a fire detection tube that is melted by flame is connected to the high-pressure vessel, and fire extinguishing agent is injected into the fire detection tube from the hole created by the flame. It is configured to let you.

JP 2003-190312 A Utility Model Registration No. 3160699

  In the apparatus described in Patent Document 1, it is necessary to detect the occurrence of a fire in the chamber by a sensor, and the injection of the extinguishing agent is performed by opening an electromagnetic valve. It is essential. If the electrical system in the control unit is damaged by a fire, the extinguishing agent cannot be injected, and there is room for improvement in that the fire is reliably extinguished.

  On the other hand, the apparatus described in Patent Document 2 is configured to cause the fire-extinguishing agent to be injected by partially melting the fire detection tube, and does not require an electrical control system. However, the fire detection tube needs to perform both functions of detecting the occurrence of a fire and injecting a fire extinguishing agent toward the location of the fire. Therefore, additional technology is required to perform reliable fire fighting.

  Further, when a large number of battery stacks are used as power sources for various facilities, they are generally housed in a cabinet together with a control panel or the like as described above for safety and durability. When the apparatus described in each of Patent Document 1 or Patent Document 2 described above is used for such a power source, high-pressure gas is blown into the cabinet together with a fire extinguishing agent due to the occurrence of a fire. Pressure increases rapidly. Since the cabinet is required to be sealed, if the internal pressure increases and exceeds the pressure resistance, partial deformation or breakage may occur, the sealing may be broken, and extinguishing may be delayed due to intrusion of outside air. . Further, when outside air enters, oxygen may be supplied to a place where the fire is extinguished to some extent, and the flame may rise again.

  The present invention has been made paying attention to the above technical problem, and an object of the present invention is to provide equipment capable of quickly and surely extinguishing a fire generated in a battery in a cabinet.

  In order to achieve the above-mentioned object, the present invention provides a tube having a hole that is melted and damaged by the heat of the fire of the battery inside a cabinet having a sealed structure in which the battery is accommodated. In a fire extinguisher of a battery cabinet in which the tube is connected to a gas-filled cylinder, the fire extinguisher and the high-pressure gas are injected into the cabinet and opened by the pressure inside the cabinet, and the cabinet is opened. The deaeration part which closes when the pressure inside is reduced is provided in a part of the cabinet.

  The cabinet according to the present invention includes an opening for inserting and removing the battery, a door for opening and closing the opening, and a seal portion provided between the opening and the door, and the deaeration unit includes: The door is a gap that is formed between the door and the seal portion by elastic deformation due to an increase in pressure inside the cabinet and is closed when the elastic deformation is eliminated by a decrease in pressure inside the cabinet. It's okay.

  In that case, the door can be configured to be more easily elastically deformed than portions other than the door in the cabinet.

  In the present invention, a plurality of slide trays on which the battery is placed are provided inside the cabinet, and the distance from the battery is maintained at a predetermined distance above the battery placed on the slide tray. A holding member for holding the tube can be fixed to the inner surface of the cabinet.

  According to this invention, the extinguishing agent and the high-pressure gas are injected into the interior of the cabinet, and when the pressure inside the cabinet rises accordingly, the deaeration part opens, so that the rise in the pressure inside the cabinet is suppressed, and as a result Since the cabinet is prevented from being damaged and air is exhausted from the inside of the cabinet, the inside of the cabinet becomes a non-oxidizing atmosphere, and fire extinguishing is promoted together with the fire extinguishing action by the fire extinguishing agent. If the inside of the cabinet is lowered due to the flame being extinguished or the injection of fire extinguishing agent or high-pressure gas stopped, the degassing part closes, so the inside of the cabinet is sealed again, creating a non-oxidizing atmosphere with no outside air intrusion. Maintained. Therefore, a situation where the battery burns again is prevented, and the fire can be surely extinguished.

  Further, in the present invention, when the door is elastically deformed to generate the deaeration part, the deaeration part can be provided without providing new parts or structures, thereby increasing the cost and man-hours. The fire extinguishing function can be improved.

  Furthermore, if the tube that injects the fire extinguishing agent or high-pressure gas by melting is held by a holding member fixed to the cabinet, the battery and the tube in the accommodated state can be moved even if the battery moves on the slide tray. The relative position can be maintained at a position suitable for injecting a fire extinguishing agent or the like toward the flame due to flame damage or flame, and as a result, the fire extinguishing function can be ensured.

It is a perspective view which shows an example of the cabinet provided with the fire extinguishing equipment which concerns on this invention. It is a fragmentary sectional view which expands and shows the seal part. It is the simplified side surface sectional view which shows the other example of the cabinet provided with the fire extinguishing equipment which concerns on this invention. It is the simplified front sectional view. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4.

  FIG. 1 shows a cabinet 1 equipped with a fire extinguishing facility according to the present invention. The cabinet 1 has a rectangular parallelepiped shape with a front surface opened by a metal plate such as a steel plate, and a battery 2 is accommodated therein. This battery 2 has a conventionally known configuration in which a plurality of single cells such as lithium ion batteries are connected in series or in parallel to form a stack. Is configured to give and receive. A door 4 for sealing the opening 3 is attached to the cabinet 1 so as to be openable and closable.

  As shown in FIG. 2, the peripheral portion of the opening 3 is a rectangular frame portion 5 formed by bending a metal plate so as to have a so-called “U” -shaped cross-sectional shape in order to increase the strength. A seal portion 6 is provided on the inner surface of the door 4 so as to be brought into contact with and closely contact the rectangular frame-shaped portion 5. The seal portion 6 is configured by sticking a heat-resistant elastic material such as rubber to the inner surface of the door 4. For example, the seal portion 6 is configured by rubber having a shore of 70 °, a width of 1 to 20 mm, and a thickness of 1 to 10 mm. Yes.

  The outer peripheral end of the door 4 is separated from the rectangular frame part 5 or the main body part of the cabinet 1 by a predetermined dimension in a state where the seal part 6 is in contact with the rectangular frame part 5. Further, the door 4 is configured to be more easily elastically deformed than the main body portion of the cabinet 1. For example, the pressure receiving area of the door 4 that receives the internal pressure of the cabinet 1 is configured to be approximately equal to the maximum area of the side wall of the cabinet 1 that receives the internal pressure of the cabinet 1, and by appropriately setting the position, number, or direction of the reinforcing ribs It is configured to be easily elastically deformed. The reinforcing rib is formed over the entire circumference so that the door 4 has a rectangular shape. In addition, the reinforcing rib is provided in the center of the door 4 in the vertical direction or the horizontal direction. Any one of the upper and lower edges or the left and right edges may be slightly separated from the main body of the cabinet 1. Note that the door 4 may be made slightly thinner than the main body of the cabinet 1 or the door 4 may be made of a material that is easily elastically deformed. Thus, the structure which provided the clearance gap 7 between the outer periphery edge of the door 4 and the main-body part of the cabinet 1, and made the door 4 elastically deformed more easily than the main-body part of the cabinet 1 is the case where the internal pressure of the cabinet 1 became high In addition, as shown in FIG. 2B, the seal portion 6 is separated from the rectangular frame portion 5 to generate the deaeration portion 8.

  A fire extinguisher cylinder 9 is provided outside the cabinet 1. This fire extinguisher cylinder 9 includes a fire extinguishing agent suitable for extinguishing a fire in which the organic material constituting the battery 2 burns, a nitrogen gas for injecting the fire extinguishing agent, and making the fire location a non-oxidizing atmosphere, etc. This is a conventionally known cylinder filled with a high-pressure gas. A tube 10 is connected to the discharge port of the fire extinguisher cylinder 9. The tube 10 is formed of a suitable synthetic resin so that a portion heated by receiving a flame is melted and has a hole, and a fire extinguisher and a high-pressure gas are injected from the hole. These fire extinguishing agent cylinder 9 and tube 10 may be those described in Patent Document 2 described above.

  The tube 10 is drawn into the interior of the cabinet 1 through an introduction hole 11 formed in the upper surface of the cabinet 1, and is meandered along the ceiling surface of the cabinet 1. The distance between the upper end of the battery 2 and the tube 10 is such that when the flame rises from the battery 2, the tube 10 quickly melts and forms a hole, and a fire extinguishing agent is directed from the hole toward the flame or combustion point. It is set to the interval at which it is injected accurately. Further, the distal end portion of the tube 10 is closed, and the pressure of the fire extinguisher cylinder 9 is constantly acting on the inside of the tube 10. Furthermore, since it is necessary to keep the cabinet 1 sealed in terms of fire extinguishing, the introduction hole 11 is closed by an appropriate heat-resistant drawer connector, sealing material, grommet, or the like.

  When the battery 2 is used as a power source, the door 4 is closed and the cabinet 1 is sealed. In this state, when a fire occurs in the battery 2 due to some abnormality, a part of the tube 10 is heated and melted by the flame. Since the pressure of the fire extinguishant cylinder 9 is constantly acting on the tube 10 as described above, the fire extinguisher and the high-pressure gas are sprayed from the hole generated by melting to the location where the fire is occurring or the flame. As a result, the temperature of the place where the fire is occurring is lowered, and oxygen is shut off, so that the flame gradually subsides.

  Moreover, since the internal pressure of the cabinet 1 becomes high when the high-pressure gas is injected into the cabinet 1, the door 4 is elastically deformed by the pressure, and the seal portion 6 is formed into a rectangular frame as shown in FIG. A deaeration part 8 is generated slightly apart from the part 5. The air inside the cabinet 1 is pushed out from the deaeration unit 8, and as a result, the inside of the cabinet 1 becomes a non-oxidizing atmosphere. When the air inside the cabinet 1 is pushed out from the deaeration unit 8, the internal pressure decreases somewhat, so that the shape of the door 4 is restored to its original shape by its elastic force. That is, the seal part 6 comes into close contact with the rectangular frame part 5 again, the deaeration part 8 is closed, and the cabinet 1 is sealed. Therefore, even when the fire extinguisher or the high-pressure gas has been completely injected, the inside of the cabinet 1 is maintained in a non-oxidizing atmosphere in which almost no oxygen is present, so that the battery 2 burns up again. Can be avoided. That is, the fire can be surely extinguished.

  3 to 5 show other specific examples of the present invention. The example shown here is configured such that the battery cabinet 1 and the control panel cabinet 12 are stacked one above the other and the battery 2 is placed on the slide tray 13. This is an example. The battery cabinet 1 is provided below the control panel cabinet 12, and an upper and lower two-stage slide tray 13 is provided therein. Each slide tray 13 is configured so that a plurality of modularized batteries 2 can be mounted, and is held so as to protrude outward from the opening 3 of the cabinet 1 by rails 14 provided on both left and right sides. The door 4 that closes the opening 3, the rectangular frame 5 formed on the peripheral edge of the opening 3, the seal portion 6, and the like are configured in the same manner as the example shown in FIGS. 1 and 2 described above.

  The fire extinguisher cylinder 9 is arranged inside the control panel cabinet 12, and the tube 10 communicated with the cylinder is drawn into the battery cabinet 1 and at a predetermined position above the battery 2 mounted on the slide tray 13. It is arranged to coast with a gap of. A tube 10 corresponding to the battery 2 placed on the upper slide tray 13 is attached to the ceiling portion of the battery cabinet 1. On the other hand, the tube 10 corresponding to the battery 2 placed on the lower slide tray 13 is attached to the holding member 15. The holding member 15 is a frame-like member extending substantially horizontally from the inner wall surface of the battery cabinet 1 to the upper side of the battery 2, and the tube 10 is fixed to the holding member 15 by a fastening member such as a clip or a band. Yes. And the space | interval of this holding member 15 and the upper surface of the battery 2 is set to the space | interval suitable for the rapid melting of the tube 10 and injection of a fire extinguisher.

  Therefore, in the configuration shown in FIGS. 3 to 5, the tube 10 is not routed even when the battery 2 is moved back and forth together with the slide tray 13, so that it is not necessary to secure a so-called extra length in the tube 10. The tube 10 can be prevented from being repeatedly bent and deformed, and can be prevented from being damaged, and the relative position (or relative height) of the tube 10 to the movable battery is suitable for extinguishing the fire. Can be maintained. And since the battery cabinet 1 has the same fire extinguishing function as that shown in FIGS. 1 and 2 described above, even if the battery 2 is provided in multiple stages by the slide tray 13, any one of the batteries 2 Fire extinguisher can be extinguished quickly and reliably.

  Note that the present invention is not limited to the specific examples described above, and the deaeration section in the present invention closes a part of the wall surface of the cabinet with an elastic force such as a spring, and when the internal pressure becomes high, It may be a closing plate that is compressed and opened, or may be a portion having the same structure as a check valve. Moreover, in this invention, you may arrange | position a fire extinguisher cylinder by heat-shielding the inside of a cabinet.

  DESCRIPTION OF SYMBOLS 1 ... Cabinet, 2 ... Battery, 3 ... Opening part, 4 ... Door, 5 ... Rectangular frame part, 6 ... Seal part, 8 ... Deaeration part, 9 ... Fire extinguisher cylinder, 10 ... Tube, 13 ... Slide tray, 15 ... holding member.

Claims (4)

Inside the cabinet of the sealed structure in which the battery is housed, a tube that is pierced by heat due to the fire of the battery is arranged, and the tube is communicated with a cylinder filled with a fire extinguisher and high-pressure gas In fire extinguishing equipment for battery cabinets,
A part of the cabinet is provided with a deaeration part that is opened by the pressure inside the cabinet that is increased by the fire extinguishing agent and high-pressure gas being injected into the cabinet and that closes when the pressure inside the cabinet decreases. Fire extinguishing equipment for battery cabinets, characterized in that The cabinet includes an opening for inserting and removing the battery, a door for opening and closing the opening, and a seal portion provided between the opening and the door,
The deaeration portion is formed between the door and the seal portion by elastic deformation of the door due to an increase in pressure inside the cabinet, and the elastic deformation is eliminated by a decrease in pressure inside the cabinet. The fire extinguishing equipment for a battery cabinet according to claim 1, wherein the fire extinguishing equipment is a gap that is closed.   The fire extinguishing equipment for a battery cabinet according to claim 2, wherein the door is configured to be elastically deformed more easily than a portion of the cabinet other than the door. A plurality of slide trays on which the battery is placed are provided inside the cabinet,
A holding member for holding the tube while maintaining a distance from the battery at a predetermined distance is provided above the battery placed on the slide tray and fixed to the inner surface of the cabinet. The fire extinguishing equipment for a battery cabinet according to any one of claims 1 to 3.

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