Fire-resistant storage container for battery storage

Abstract

To provide a fire-resistant storage container for batteries that can prevent flames from escaping from the storage compartment to the outside of the enclosure even after the gasket has burned out during battery combustion. [Solution] The fire-resistant storage container 1 for storage batteries comprises a housing 10 having a storage chamber S for storing storage batteries and an opening 16, a door 20 that can open and close the opening 16, and a first gasket 31 that seals the opening gap G1 between the opening 16 and the door 20. The first gasket 31 burns out when the storage battery burns, opening the opening gap G1. The container 1 is provided with a first flame-blocking part B1 having a first shielding member that is located on the storage chamber S side and covers the outer edge of the inner surface of the door 20, thereby forming a first shielding gap H1 that communicates with the opening gap G1. The opening gap G1 and the first shielding gap H1 are formed to communicate with each other so that the flame is refracted at least once in the flame ejection path, thereby forming a first refraction gap J1 that prevents the flame from ejecting.

Description

[Technical Field]

[0001] The present disclosure relates to a fire-resistant container for a storage battery and use thereof. [Background Art]

[0002] Storage batteries including lithium-ion storage batteries have a risk of ejecting high-temperature flame and gas when ignited due to thermal runaway or the like. Therefore, when a container is used for transporting or storing storage batteries, the container is required to have a performance of preventing flame generated in a storage chamber from ejecting to the outside.

[0003] A container has an opening for loading and unloading cargo into and from a storage chamber, and the opening is opened and closed by a door. A gap formed between the opening and the door is normally sealed by a sealing material such as a gasket. However, when the storage battery housed in the container burns, the gasket is burned out due to a temperature rise in the storage chamber, the gap between the opening and the door is opened, and there is a risk that flame ejects to the outside of the container.

[0004] The above-mentioned problem is not limited to containers for transportation or storage, and is a common problem for containers having a storage chamber for storing a storage battery, an opening for taking the storage battery in and out of the storage chamber, and a door for opening and closing the opening. That is, as long as there is a gap sealed by a gasket between the opening and the door, the gasket may be burned out when the storage battery burns, and flame may eject from the gap, and this problem can occur regardless of the form and size of the container. [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] One of the purposes of this disclosure is to provide a fire-resistant storage container for batteries that can prevent flames from escaping from the storage chamber to the outside of the enclosure even after the gasket has burned out during a battery combustion. Another purpose of this disclosure is to provide a fire-resistant storage container for batteries that can prevent flames from escaping from the storage chamber to the outside of the enclosure even after the gasket has burned out during a battery combustion. [Means for solving the problem]

[0006] One aspect of the present disclosure is a fire-resistant storage body for a storage battery, comprising a housing having a storage chamber for storing a storage battery and an opening for inserting and removing the storage battery from the storage chamber, a door that can open and close the opening, and a first gasket that seals the gap between the opening and the door when the door is closed, wherein the first gasket normally seals the gap, and burns out due to the rise in temperature inside the storage chamber when the storage battery is burning, thereby releasing the seal on the gap and allowing the storage chamber to communicate with the outside of the housing, wherein the closed state The fire-resistant storage body for a storage battery has a first flame-blocking section that prevents flames from escaping from the storage chamber to the outside of the housing, the first flame-blocking section has a first shielding member that is located on the storage chamber side and covers the outer edge of the inner surface of the door, thereby forming a first shielding gap that communicates with the opening gap, and the opening gap and the first shielding gap are formed to communicate with each other so that, in the burnt state of the first gasket, the flame escape path from the storage chamber to the outside of the housing bends at least once, thereby forming a first bending gap that prevents flames from escaping. [Effects of the Invention]

[0007] According to one aspect of this disclosure, even after the gasket burns out during battery combustion, it is possible to prevent flames from being ejected from the storage chamber to the outside of the enclosure. Other issues, configurations, and effects are illustrated by the following description of embodiments. [Brief explanation of the drawing]

[0008] Drawings necessary to clearly illustrate one aspect of this disclosure by illustrative embodiments are described below. Each drawing is for illustrative purposes only and is not intended to limit the scope of protection of the present invention. Those skilled in the art can obtain drawings of other relevant embodiments based on the drawings of this disclosure without employing any particular inventive ability. [Figure 1] Figure 1 is a side view of a fire-resistant storage container for a battery according to one embodiment. [Figure 2] Figure 2 is a cross-sectional view along the F2-F2 line of the fire-resistant storage container for batteries shown in Figure 1. Figure 2A shows the double doors closed, Figure 2B shows the right door with the leading edge open, and Figure 2C shows the left door open, following Figure 2B. [Figure 3] Figure 3 is a cross-sectional perspective view along the line F3-F3, which shows an upper projection provided on the upper frame member, as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 3A shows the closed state of the door with the first gasket, and Figure 3B shows the closed state of the door after the first gasket has burned out. [Figure 4] Figure 4 is a cross-sectional view along the line F3-F3, showing other upper protrusions provided on the upper frame member, as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 4A shows a C-shaped member, Figure 4B shows an L-shaped member, and Figure 4C shows a cylindrical member. [Figure 5] Figure 5 is a cross-sectional view along the F3-F3 line showing a foldable shielding plate provided on the upper frame member as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 5A shows the foldable shielding plate in the shielding position, and Figure 5B shows the foldable shielding plate in the retracted position. [Figure 6] Figure 6 is a cross-sectional view along the line F3-F3 showing a sliding shielding plate provided on the upper frame member as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 6A shows the sliding shielding plate in the shielding position, and Figure 6B shows the sliding shielding plate in the retracted position. [Figure 7]Figure 7 is a cross-sectional view along the F3-F3 line showing another foldable shielding plate provided on the upper frame member as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 7A shows the foldable shielding plate in the shielding position, and Figure 7B shows the foldable shielding plate in the retracted position. [Figure 8] Figure 8 is a cross-sectional view along the line F8-F8, showing a side projection provided on a corner column member, as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 8A shows the closed state of the door with the first gasket, and Figure 8B shows the closed state of the door after the first gasket has burned out. [Figure 9] Figure 9 is a cross-sectional view along the line F8-F8 showing a foldable shielding plate as a side projection provided on a corner column member, as an example of the first shielding member of the fire-resistant storage container for storage batteries shown in Figure 1. Figure 9A shows the foldable shielding plate in the shielding position, and Figure 9B shows the foldable shielding plate in the retracted position. [Figure 10] Figure 10 is a cross-sectional view along the line F10-F10, which shows a lower recess provided in the lower frame member, as an example of the first shielding member of the fire-resistant storage container for batteries shown in Figure 1. Figure 10A shows the closed state of the door with the first gasket, and Figure 10B shows the closed state of the door after the first gasket has burned out. [Figure 11] Figure 11A is a cross-sectional view along the line F11A-F11A showing a double door shielding plate installed on a double door as an example of a second shielding member, and shows the closed state of the double door with the second gasket. Figure 11B is a cross-sectional view along the line F11B-F11B showing a folding door shielding plate installed on a folding door as an example of a third shielding member, and shows the closed state of the folding door after the third gasket has burned out. Note that in Figure 11A, the view after the second gasket has burned out is the same as in Figure 11B, and in Figure 11B, the view with the third gasket is the same as in Figure 11A. [Figure 12]Figure 12 is a cross-sectional view illustrating an internal refraction forming section. Figure 12A shows the first internal refraction forming section provided on the door shown in Figure 4A, Figure 12B shows the first internal refraction forming section provided on the door shown in Figure 8B, Figure 12C shows the first internal refraction forming section provided on the door shown in Figure 10B, and Figure 12D shows the second internal refraction forming section provided on the door shown in Figure 11B. [Figure 13] Figure 13 is a cross-sectional view illustrating an external refraction forming section, where Figure 13A shows the first external refraction forming section provided on the door shown in Figure 12A, and Figure 13B shows the second external refraction forming section provided on the door shown in Figure 12D. [Modes for carrying out the invention]

[0009] One aspect of this disclosure will be described below with reference to the drawings, based on the embodiments illustrated below. The term "this disclosure" means the matters described in the specification, claims and drawings and matters equivalent to those described to a person skilled in the art.

[0010] The following embodiments are not intended to limit the scope of the present invention as described in the claims, and not all of the configurations described in these embodiments are necessarily essential as means of solving the problem of the present invention. That is, not all of the components described in these embodiments are necessarily essential as means of solving the problem, and the present invention can be constituted by using one or more components corresponding to the problem identified based on this disclosure as means of solving the problem.

[0011] All embodiments, optional embodiments and modifications included in this disclosure can be combined to form new embodiments. All technical features and optional technical features included in this disclosure can be combined to form new technical features.

[0012] When expressions such as "first", "second", and "third" are used in the present disclosure, they are used to distinguish different elements and are not intended to indicate a specific order, superiority or inferiority, or the like. Components common to each embodiment are denoted by the same reference numerals, and duplicate descriptions are omitted.

[0013] Hereinafter, embodiments according to one aspect of the present disclosure will be described in detail with reference to the drawings. In the following description, a fire-resistant storage container for a storage battery is explained as an example of the "fire-resistant storage body for a storage battery" according to the present invention.

[0014] <Types of Fire-Resistant Storage Bodies for Storage Batteries>

[0015] First, the types of fire-resistant storage bodies for storage batteries according to the present invention will be described. In the present disclosure, the "fire-resistant storage body for a storage battery" refers to a storage body having fire resistance that includes a storage chamber for storing a storage battery and an opening for putting the storage battery into and taking the storage battery out of the storage chamber. The fire-resistant storage body for a storage battery includes various forms exemplified below regardless of its size, shape, structure, application, and compliant standards.

[0016] As a first form of the fire-resistant storage body for a storage battery, there is a container. In the present disclosure, the term "container" refers to a box-shaped storage body having a certain frame structure, which is mainly intended for transportation and / or storage of storage batteries among fire-resistant storage bodies for storage batteries. Containers include those (containers for intermodal transportation) that have corner fittings and have predetermined outer dimensions and strength, thereby being usable for intermodal transportation that enables integrated transportation without transshipment between multiple transportation modes such as ships, railways, and trucks. Such containers include those conforming to strength standards based on international standards such as ISO 668 and ISO 1496 and the International Convention for Safe Containers (CSC), and have sizes such as 10 feet, 20 feet, and 40 feet. Corner fittings are used for crane lifting during transshipment in intermodal transportation, and also function as load transmission members when stacking a plurality of containers in the vertical direction. In addition to those usable for the aforementioned intermodal transportation, containers also include those that do not rely on corner fittings or standard outer dimensions.

[0017] As a second form of the fire-resistant container for storage batteries, there are containers other than containers. For example, case-shaped or casing-shaped containers that store a single storage battery or a small number of storage batteries, rack-shaped containers that store storage battery modules, cabinet-shaped or cubicle-shaped containers installed in a building, and fire-resistant casings for storage battery packs mounted on vehicles or ships are included. These containers include those that are smaller than containers and those designed on the premise that they will be incorporated into specific equipment or facilities. The fire-resistant structure according to the present invention has a storage room, an opening, and a door, and is applicable to any container that has a gap between the opening and the door, and can be applied to any of the above forms.

[0018] <Classification based on use>

[0019] Fire-resistant containers for storage batteries can also be classified as follows according to their use.

[0020] First, there is a transportation application used for land transportation and maritime transportation by ships, railways, trucks, and the like.

[0021] Second, there is a stationary storage application installed for stationary storage of storage batteries. Stationary storage applications include both indoor applications installed in buildings such as warehouses, factories, power generation facilities, and data centers, and outdoor applications installed in outdoor sites, parking lots, port facilities, and the like. For outdoor applications, since the container itself is exposed to wind, rain, and solar radiation, it is preferable to use a weather-resistant material (for example, weather-resistant steel such as SPA-H steel) as the fire-resistant container for storage batteries. On the other hand, for indoor applications, since the building protects from the external environment, the requirements for weather resistance can be relaxed. However, from the perspective of preventing the spread of fire to other equipment and structures in the building, the importance of flame blocking performance may actually increase.

[0022] For stationary storage applications, in order to effectively utilize the storage area, multiple storage units are arranged horizontally or stacked vertically. In stacked arrangements, it is necessary to prevent the spread of fire to upper storage units if a battery stored in a lower storage unit burns out, and flame-blocking performance is important even between adjacent storage units in the vertical direction. In particular, in stacked arrangements indoors, the importance of flame-blocking performance is further increased because multiple storage units are placed in close proximity in the limited space of a building.

[0023] Thirdly, there are dual-purpose containers that serve both transportation and stationary storage purposes. In dual-purpose containers, they are used for handling and transport during transportation, and after arriving at their destination, they are installed indoors or outdoors and used as stationary storage containers. The above classification based on purpose is based on the operational form, not the structural characteristics of the container, and containers with the same structure can be used for any of the above purposes.

[0024] In this embodiment, a fire-resistant storage container for batteries (hereinafter simply referred to as "container") belonging to the third use described above, configured as a 20-foot container that can be used for intermodal transport and is used for both transport and stationary storage purposes, will be described as an example. However, the fire-resistant structure and flame-blocking structure according to the present invention are applicable to any of the above-mentioned forms and uses of storage containers, regardless of the form, specifications, size and use of the storage container.

[0025] <Container types based on door arrangement>

[0026] Containers are classified into various types depending on the arrangement of their doors. The main types include dry containers (standard type) which have double doors on only one side of the shorter side, double-door containers which have double doors on both sides of the shorter side, side-open containers which have double doors on the shorter side and an opening on one side of the longer side, and double-side-open containers which have openings on both sides of the longer side. In side-open containers and double-side-open containers, those which open along the entire length of the longer side are also called full-side-open containers. In this embodiment, a full-side-open container in which one side of the longer side opens along the entire length of the side will be used as an example for explanation (see Figure 2). However, the fire-resistant structure according to the present invention is applicable as long as there is a gap between the housing and the door, between adjacent doors, or between door parts that constitute a folding door.

[0027] <Overall configuration of fire-resistant storage container 1 for battery storage>

[0028] In the following explanation, the X direction indicated by the arrow in Figure 1, etc., is the first direction, length direction, longitudinal direction, and door surface direction of the fire-resistant storage container 1 for storage batteries (hereinafter simply referred to as "container 1"). Similarly, the Y direction is the second direction of the container, width direction, transverse direction, and door thickness direction, and the Z direction is the third direction of the container, height direction.

[0029] Figure 1 is a side view of the container 1 according to this embodiment. Figure 2 is a cross-sectional view of the container 1 shown in Figure 1 along the line F3-F3, where Figure 2A shows the double doors 21 in the closed state, Figure 2B shows the state with the leading edge door of the folding door constituting the right door open, and Figure 2C shows the state where the trailing edge door 23a and leading edge door 23b of the folding door 22 constituting the left door are opened further from the state in Figure 2B.

[0030] As shown in Figures 1 and 2, container 1 comprises a housing 10 and a door 20 provided on the housing 10. The housing 10 and door 20 are made of metal. The inner surface of the housing 10 defines a storage chamber S for housing a battery. The storage chamber S is a structural element that forms the storage space. The external dimensions of container 1 are 6,058 mm in length (X direction), 2,438 mm in width (Y direction), and 2,591 mm in height (Z direction).

[0031] The enclosure 10 has a top plate 11, a bottom plate 12, a pair of longitudinal side walls 17, and a pair of transverse side walls 18. These wall surfaces are supported by the skeletal members of the enclosure 10, namely a plurality of corner column members 13 at the four corners of the enclosure 10, an upper frame member 14, and a lower frame member 15. The plurality of corner column members 13 are formed in the Z direction between the top plate 11 and the bottom plate 12 and support the top plate 11, the upper frame member 14, the longitudinal side walls 17, and the transverse side walls 18. The upper frame member 14 supports the periphery of the top plate 11. The lower frame member 15 supports the periphery of the bottom plate 12.

[0032] A pair of longitudinal side walls 17 are arranged opposite each other in the Y direction and extend along the X direction. One longitudinal side wall 17a has an opening 16 surrounded by an upper frame member 14, a lower frame member 15, and a pair of adjacent corner column members 13 in the X direction, and this opening 16 is closed by a door 20 that can be opened and closed. The other longitudinal side wall 17b is a fixed wall without an opening, and is made of corrugated steel sheet (wave-shaped sheet) made of SPA-H steel as an example. Corrugated steel sheet is made by forming a flat plate into a wave-shaped cross section, and has high bending rigidity in the out-of-plane direction despite its thin thickness. Note that the opening 16 only needs to be provided on at least one surface of the housing 10, and the surface on which it is placed and the number of openings can be changed as appropriate depending on the application.

[0033] The pair of short side walls 18 are fixed walls positioned opposite each other in the X direction and extending along the Y direction. Each short side wall 18 is provided to close off the area enclosed by the upper frame member 14, the lower frame member 15, and a pair of adjacent corner column members 13 in the Y direction. In this embodiment, the short side walls 18 are, as an example, made of flat plates made of SPA-H steel (weather-resistant hot-rolled steel specified in JIS G 3114). SPA-H steel is a steel material whose resistance to atmospheric corrosion has been enhanced by the addition of alloying elements such as copper, chromium, and nickel, making it suitable for long-term use in outdoor environments.

[0034] The top plate 11 is, as an example, made of a flat plate (partially press-formed) made of SPA-H steel. As shown in Figure 2A, the top plate 11 covers the top of the storage compartment S in both the X and Y directions.

[0035] The floor plate 12 is constructed, as an example, from a checkered steel plate made of SPA-H steel. The checkered steel plate is a steel plate with a non-slip protrusion pattern on its surface, ensuring safety during loading and unloading of the storage battery. Multiple lashing rings (not shown) are provided on the upper surface of the floor plate 12. The lashing rings are fittings for fastening devices such as lashing belts, and are arranged at predetermined intervals in the X and Y directions of the floor plate 12. The storage battery is fixed on the floor plate 12 by fastening devices such as lashing belts to the lashing rings. This prevents the storage battery from shifting position or tipping over due to vibrations and shocks during transport, and reduces the risk of internal short circuits and thermal runaway caused by physical impacts to the storage battery.

[0036] Door 20 is provided corresponding to the opening 16 and closes the opening 16 in a manner that allows it to be opened and closed. For example, door 20 is made of corrugated steel sheet (wave-shaped sheet) made of SPA-H steel. When door 20 is closed, door 20 made of corrugated steel sheet constitutes the outer surface of the longitudinal side wall 17a.

[0037] As shown in Figure 2A, the door 20 is configured as a "double door 21" consisting of a left door 21L and a right door 21R arranged opposite each other in the X direction. The left door 21L and the right door 21R are supported at their respective tail ends via hinges 24 to corresponding corner column members 13, and their leading ends abut near the center of the opening 16 in the X direction.

[0038] As shown in Figures 2B and 2C, the left door 21L and the right door 21R are configured as "folding doors" that include a tail-side door 23a located on the tail end and a leading-side door 23b located on the leading end. The tail-side door 23a and the leading-side door 23b are connected via a folding hinge 25, and when the door is opened, the leading-side door 23b folds relative to the tail-side door 23a (see Figures 2B and 2C). This prevents the entire door 20 from protruding too far outward when it is opened, making it possible to carry out cargo handling in a limited space.

[0039] When the door 20 is closed, an opening gap G1 is formed between the periphery of the opening 16 of the housing 10 and the door 20. The opening gap G1 is a general term for the gaps that exist between the upper frame member 14 and the door 20, between the lower frame member 15 and the door 20, and between the corner column member 13 and the door 20. A first gasket 31 is provided in the opening gap G1 (see Figures 3A, 8A, and 10A). The first gasket 31 is attached to the outer frame 20a of the door 20. The first gasket 31 is made of, for example, EPDM rubber and seals the opening gap G1 to ensure the airtightness and watertightness of the storage compartment S during normal use.

[0040] Furthermore, a gap G2 between the double doors is formed at the joint between the door edge 21La of the left door 21L and the door edge 21Ra of the right door 21R. A second gasket 32 ​​is provided in the gap G2 between the double doors (see Figure 11A). The second gasket 32 ​​is attached to the door edge 21Ra of the right door 21R.

[0041] Furthermore, a folding door gap G3 is formed between the tail end door 23a and the leading end door 23b. The folding door gap G3 is the gap formed at the joint between the tail end door 23a and the leading end door 23b, which are connected by a folding door hinge 25. A third gasket 33 is provided in the folding door gap G3. The third gasket 33 is attached to the joint end 23a1 of the tail end door 23a. The third gasket 33 has the same configuration as the second gasket 32 ​​and is shown in Figure 11A with the same cross-sectional structure as the second gasket 32.

[0042] The first gasket 31, the second gasket 32, and the third gasket 33 are all made of an elastic sealing material such as EPDM rubber. If the battery burns inside the storage chamber S, these gaskets will burn out as the temperature inside the storage chamber S rises. A structure to prevent flames from escaping from the storage chamber S to the outside of the housing 10, even when the opening gap G1, the double door gap G2, and the folding door gap G3 are open after the gaskets have burned out, will be described later with reference to Figure 3 and onward.

[0043] <First flame-blocking section and first shielding member [Figure 3]>

[0044] Next, with reference to Figure 3, the flame emission prevention structure in the opening gap G1 will be described. Figure 3 is a cross-sectional perspective view of the container 1 shown in Figure 1 along the line F3-F3, and shows an enlarged view of the vicinity of the upper frame member 14 and the door 20 in the closed state of the door 20. Figure 3A shows the closed state of the door 20 with the first gasket 31, and Figure 3B shows the closed state of the door 20 after the first gasket 31 has burned out.

[0045] As shown in Figure 3A, the upper frame member 14 is a skeletal member extending along the X direction, installed between adjacent corner column members 13 in the X direction below the top plate 11, and has an upper projection 41 that protrudes downward toward the storage compartment S from its lower surface. The upper projection 41 is integrally formed with the upper frame member 14. The upper projection 41 is an example of a first shielding member and extends along the X direction. Specifically, it is formed along the entire length of the upper frame member 14 facing the door 20 in the X direction.

[0046] The door 20 has an outer peripheral frame 20a formed in a rectangular tubular shape along its outer circumference. The outer peripheral frame 20a ensures the rigidity of the door 20 and, when the door 20 is closed, defines an opening gap G1 by facing the skeletal members of the housing 10 (upper frame member 14, lower frame member 15, and corner column member 13). At the upper end of the door 20, the upper surface of the outer peripheral frame 20a is positioned to face the lower surface of the upper frame member 14. As shown in Figure 3A, during normal use, the opening gap G1 between the upper frame member 14 and the outer peripheral frame 20a is sealed by the first gasket 31.

[0047] Figure 3B shows the state after the temperature rises due to the combustion of the battery in the storage chamber S, causing the first gasket 31 to burn out. When the first gasket 31 burns out, the opening gap G1 is opened. In addition, a first shielding gap H1 is created between the upper protrusion 41 and the outer surface of the outer frame 20a. The first shielding gap H1 is a gap formed by the upper protrusion 41 protruding onto the path from the inside to the outside of the storage chamber S, and is in communication with the opening gap G1.

[0048] The opening gap G1 and the first shielding gap H1 are in communication with each other, but extend in different directions. Specifically, starting from the storage chamber S side, the first shielding gap H1 extends upward in the Z direction, and the opening gap G1 extends outward in the Y direction from the first bend K1 at the upper end of the first shielding gap H1. Together, the opening gap G1 and the first shielding gap H1 constitute the first bend gap J1. The first bend gap J1 is a gap in which the path from the inside to the outside of the storage chamber S is bent at least once.

[0049] As an example, the width of the first shielding gap H1 in the Y direction can be 2 mm or more and 10 mm or less, more preferably 4 mm or more and 6 mm or less. This is narrow enough to suppress the passage of flames, while still allowing gas to pass through after the gasket burns out. The width of the opening gap G1 in the Z direction can be 15 mm or more and 25 mm or less, more preferably 17 mm or more and 19 mm or less. This, when combined with path refraction, prevents the flames from traveling straight while ensuring a sufficient release of combustion gases and preventing an increase in internal pressure.

[0050] Specifically, gas or flames moving from inside the storage chamber S outward first curve around the tip of the upper projection 41, then pass through the first shielding gap H1 between the upper projection 41 and the outer surface of the outer frame 20a in the Z direction, change direction in the Y direction at the first bending section K1, and pass through the opening gap G1 between the upper surface of the outer frame 20a and the lower surface of the upper frame member 14 to reach the outside. In this way, the path through the first bending gap J1 is blocked by the upper projection 41 and cannot be passed through in a straight line. The upper frame member 14 including the upper projection 41 and the outer frame 20a of the door 20 constitute the first flame shielding section B1. After the first gasket 31 burns out, the first flame-blocking section B1 forms a first shielding gap H1 between the upper projection 41 and the outer surface of the outer frame 20a, and this first shielding gap H1 and the opening gap G1 communicate to form a first bending gap J1, thereby blocking the linear ejection of flames from the inside to the outside of the storage chamber S.

[0051] The first refraction gap J1 has the function of allowing the passage of gas while suppressing the passage of flame. This flame suppression function is presumed to be exerted mainly by the following mechanism.

[0052] Firstly, the refraction of the path physically prevents the flame from traveling in a straight line, and in order for the flame to pass through the bend, it must follow a complex path that involves changing direction.

[0053] Secondly, as the flame passes through a narrow gap, the high-temperature gases that make up the flame come into contact with the steel wall that defines the gap, and the flame temperature decreases due to heat transfer to the steel. If the width of the gap is sufficiently narrow, the heat loss to the wall exceeds the heat generated by the combustion reaction, making it impossible to sustain the combustion reaction of the flame, leading to extinction (flame extinguishing effect).

[0054] Thirdly, at the bending point, the front surface of the flame is stretched and the contact area with the wall surface increases, further promoting the flame-extinguishing effect described above.

[0055] In this embodiment, the size of the first bending gap J1 is set to achieve both the flame suppression function and the function of releasing the high-temperature, high-pressure gas generated during the combustion of the battery. Specifically, the first shielding gap H1 located on the side of the storage chamber S is set to be narrow enough to effectively extinguish the flame, while the opening gap G1 located on the outside of the housing 10 is set to have a cross-sectional area sufficient to release the combustion gas inside the storage chamber S to the outside and prevent an excessive pressure rise inside the storage chamber S. In this way, the first bending gap J1 achieves both the prevention of flame ejection and the prevention of rupture of the housing 10 due to an increase in internal pressure by combining a relatively narrow gap and a wide gap in a bending structure.

[0056] <Variations in the cross-sectional shape of the upper protrusion [Figure 4]>

[0057] Figure 4 is a cross-sectional view along the line F3-F3 showing another example of the upper projection provided on the upper frame member 14, and shows three variations with different cross-sectional shapes of the upper projection. Figures 4A, 4B, and 4C all show the closed state of the door 20 after the first gasket 31 has burned out.

[0058] Figure 4A shows an example in which a channel material 42a (C-shaped member) with a C-shaped cross-section is used as the upper protrusion. The channel material 42a is provided on the lower surface of the upper frame member 14, and is positioned so that its C-shaped opening faces downward. After the first gasket 31 burns out, a first shielding gap H1 is formed between the channel material 42a and the outer frame 20a, and the opening gap G1 and the first shielding gap H1 communicate to form a first bending gap J1. The channel material 42a has a groove portion 42a1 inside, which is a groove-shaped space that opens downward, and this groove portion 42a1 has a larger opening than the first shielding gap H1. Flames moving from the inside of the storage chamber S outward preferentially enter and remain in the groove portion 42a1 with a larger opening rather than passing through the narrow first shielding gap H1, thus suppressing the flames from reaching the outside through the first shielding gap H1. In Figure 4A, the formation areas of the opening gap G1 and the first shielding gap H1 are indicated by arrows in the Y and Z directions. However, in all other drawings, to simplify the representation, the formation areas are indicated only by arrows in the width direction.

[0059] Figure 4B shows an example in which an L-shaped member 42b (L-shaped member) is used as the upper protrusion. The L-shaped member 42b consists of a horizontal piece 42b1 fixed to the lower surface of the upper frame member 14 and a vertical piece 42b2 extending downward from the end of the horizontal piece 42b1 on the door 20 side. After the first gasket 31 burns out, a first shielding gap H1 is formed between the vertical piece 42b2 of the L-shaped member 42b and the outer surface of the outer frame 20a, and together with the opening gap G1, forms a first bending gap J1. Due to the L-shaped cross-sectional shape, the flame is forced to change direction after curving around the tip of the vertical piece, thus preventing the flame from traveling in a straight line.

[0060] Figure 4C shows an example in which a cylindrical member 42c (tubular member) is used as the upper protrusion. The cylindrical member 42c is a tubular member with a closed cross-section and is provided so as to protrude from the lower surface of the upper frame member 14. After the first gasket 31 burns out, a first shielding gap H1 is formed between the cylindrical member 42c and the outer surface of the outer frame 20a, and together with the opening gap G1, it constitutes a first bending gap J1. Since the cylindrical member 42c has a closed cross-section, it has higher cross-sectional rigidity compared to the L-shaped member 42b or channel member 42a, and has the advantage that the gap dimension of the first shielding gap H1 does not change easily even when subjected to external forces.

[0061] The upper protrusions shown in Figures 4A, 4B, and 4C (channel material 42a, L-shaped cross-section member 42b, and cylindrical material 42c) are all examples of fixed shielding members and extend along the X direction. These members are fixed to the upper frame member 14 by fastening means such as welding, bolting, or riveting. The fastening means can be appropriately selected according to the required strength, ease of construction, maintainability, etc. In all configurations, the upper protrusions are located on the path from the inside to the outside of the storage chamber S after the opening gap G1 is opened, forming a first shielding gap H1 and constituting a first bending gap J1, thereby functioning as a first flame shielding part. The cross-sectional shape of the upper protrusions can be appropriately selected according to the required flame suppression performance, rigidity, manufacturing cost, etc.

[0062] <Movable shielding member [Figures 5-7]>

[0063] The upper protrusion 41, channel material 42a, L-shaped cross-section member 42b, and cylindrical material 42c shown in Figures 3 and 4 are all fixed shielding members fixed to the upper frame member 14. In contrast, Figures 5 to 7 show an example in which a movable shielding member is used as the upper protrusion. The movable shielding member is configured to move between a shielding position, which is located on the path from the inside to the outside of the storage room S and forms a first bending gap J1, and a retracted position, which is moved away from the shielding position and allows the opening and closing of the door 20.

[0064] <First foldable shielding plate [Figure 5]>

[0065] Figure 5 is a cross-sectional view along the line F3-F3 showing an example in which a foldable shielding plate is used as the upper protrusion and movable shielding member. Figure 5A shows the state in which the first foldable shielding plate 51 is in the shielding position, and Figure 5B shows the state in which the first foldable shielding plate 51 is retracted to the retracted position and the door 20 is opened.

[0066] As shown in Figure 5A, the first foldable shielding plate 51 is rotatably supported on the lower surface of the upper frame member 14 via a hinge 52. A recess 14b is formed on the lower surface of the upper frame member 14, and the upper end of the first foldable shielding plate 51 fits into the recess 14b. When the door 20 is closed, the first foldable shielding plate 51 extends downward (in the Z direction) from the lower surface of the upper frame member 14 and is positioned in a shielding position along the outer surface of the outer peripheral frame 20a. In this shielding position, a first shielding gap H1 is formed between the first foldable shielding plate 51 and the outer surface of the outer peripheral frame 20a, and the opening gap G1 and the first shielding gap H1 communicate to form a first bending gap J1. That is, in the shielding position, the first foldable shielding plate 51 exhibits a flame blocking function similar to that of a fixed shielding member. Furthermore, a recess 14b is opened in the first bending portion K1. As a result, flames that enter through the first shielding gap H1 enter and remain in the recess 14b, thus preventing them from reaching the opening gap G1. In this way, the recess 14b can also perform a flame blocking function.

[0067] During cargo handling operations, the door 20 is first opened, then the locking mechanism of the first foldable shielding plate 51 is released and it is rotated upward around the hinge 52 to retract into the retracted position as shown in Figure 5B. The recess 14b is a clearance space that allows the upper end of the first foldable shielding plate 51 to rotate. The fixed shielding member (Figures 3 and 4) is fixed to the upper frame member 14 and remains protruding near the upper edge of the opening 16 even when the door 20 is open, limiting the effective opening area of ​​the opening 16. In contrast, the first foldable shielding plate 51 retracts to the retracted position, moving away from the vicinity of the upper edge of the opening 16, thus expanding the effective opening area of ​​the opening 16. As a result, the first foldable shielding plate 51 does not become an obstacle when loading and unloading cargo such as batteries, improving the efficiency of cargo handling operations. After the loading or unloading of cargo is complete, the foldable shielding plate 51 is rotated downward to return to the shielding position, the locking mechanism is activated, and the door 20 is closed. This creates the first bending gap J1 again.

[0068] Unlike fixed shielding members, the first foldable shielding plate 51 can be retracted when the door 20 is opened or closed, making it possible to set the amount of protrusion of the upper part (i.e., the length of the first shielding gap H1 in the Z direction) to be larger than that of fixed shielding members. This increases the path length in the first bending gap J1, further improving the flame suppression effect.

[0069] The hinge 52 is a locking hinge equipped with a locking mechanism. When the first foldable shielding plate 51 is positioned in the shielding position shown in Figure 5A, the locking mechanism is activated, fixing the first foldable shielding plate 51 in the shielding position. This prevents the first foldable shielding plate 51 from unintentionally moving to the retracted position due to vibrations during transport or pressure fluctuations in the storage compartment S, thereby ensuring that the flame blocking function is reliably maintained.

[0070] <Sliding shielding plate [Figure 6]>

[0071] Figure 6 is a cross-sectional view along the line F3-F3 showing an example in which a sliding shielding plate is used as the upper protrusion and movable shielding member. Figure 6A shows the sliding shielding plate 61 in the shielding position, and Figure 6B shows the sliding shielding plate 61 in the retracted position.

[0072] As shown in Figure 6A, the sliding shielding plate 61 has a shielding plate 61a which is a vertical plate that extends in the vertical direction, a stopper 61b which is a horizontal plate provided at the upper end of the shielding plate 61a, and a flange 61c which is a horizontal plate provided at the lower end of the shielding plate 61a. A magnet 61d is fixed to the flange 61c.

[0073] The sliding shielding plate 61 is supported so as to be slidable in the Z direction (vertical direction) relative to the upper frame member 14. A guide hole 14a is formed on the lower surface of the upper frame member 14, and the sliding shielding plate 61 slides as the shielding plate 61a slides vertically through the guide hole 14a.

[0074] In the shielding position shown in Figure 6A, the sliding shielding plate 61 protrudes downward from the lower surface of the upper frame member 14, and the shielding plate 61a is positioned along the outer surface of the outer frame 20a. In this shielding position, a first shielding gap H1 is formed between the shielding plate 61a and the outer surface of the outer frame 20a, and the opening gap G1 and the first shielding gap H1 communicate to form a first bending gap J1.

[0075] During cargo handling operations, after opening the door 20, the sliding shielding plate 61 is slid upward to the retracted position as shown in Figure 6B. In the retracted position, the sliding shielding plate 61a is stored inside the upper frame member 14 and retracts from the vicinity of the upper edge of the opening 16. As a result, the effective opening area of ​​the opening 16 is increased, so the sliding shielding plate 61 does not become an obstacle when loading and unloading cargo such as storage batteries, and the efficiency of cargo handling operations is improved.

[0076] In the retracted position, the sliding shielding plate 61 is held by magnetic force on the lower surface of the upper frame member 14 by a magnet 61d provided on the flange 61c. Alternatively, the sliding shielding plate 61 may be configured to be held by the upper frame member 14 by the magnetic force of a magnet (not shown) provided on the stopper 61b in the shielding position. This prevents the sliding shielding plate 61 from shifting position due to vibrations during transportation. The aforementioned magnet 61d (and flange 61c) may be provided along the entire length of the sliding shielding plate 61 in the longitudinal direction, or it may be provided at multiple points spaced apart in the longitudinal direction.

[0077] <Second foldable shielding plate [Figure 7]>

[0078] Figure 7 is a cross-sectional view along the line F3-F3 showing an example in which a foldable shielding plate is used as the upper protrusion and movable shielding member. Figure 7A shows the state in which the second foldable shielding plate is in the shielding position, and Figure 7B shows the state in which the second foldable shielding plate is retracted to the retracted position and the door 20 is open.

[0079] As shown in Figure 7A, the second foldable shielding plate 71 is rotatably supported on the lower surface of the upper frame member 14 via a hinge 72 with a locking mechanism. When the door 20 is closed, the second foldable shielding plate 71 extends downward (in the Z direction) from the lower surface of the upper frame member 14 and is positioned in a shielding position along the outer surface of the outer frame 20a. In this shielding position, a first shielding gap H1 is formed between the second foldable shielding plate 71 and the outer surface of the outer frame 20a, and the opening gap G1 and the first shielding gap H1 communicate to form a first bending gap J1.

[0080] As shown in Figure 7B, the second foldable shielding plate 71, after releasing the locking mechanism, rotates outward around the hinge 72 to the housing 10 and retracts to the retracted position. In the retracted position, the second foldable shielding plate 71 retracts from near the upper edge of the opening 16, and the effective opening area of ​​the opening 16 is enlarged. As a result, the second foldable shielding plate 71 does not become an obstacle when loading or unloading cargo such as batteries, and the efficiency of cargo handling operations is improved.

[0081] The first foldable shielding plate 51, the sliding shielding plate 61, and the second foldable shielding plate 71 shown in Figures 5 to 7 are all examples of movable shielding members and share the common feature of being movable between a shielding position and a retracted position. In all of these forms, in the shielding position, they form a first bending gap J1 similar to a fixed shielding member to perform a flame blocking function, and in the retracted position, they retract from near the upper edge of the opening 16 to expand the effective opening area. Compared to a fixed shielding member, a movable shielding member has the advantage that by moving it to the retracted position, the shielding member does not become an obstacle when loading and unloading cargo, and because it has a high degree of design freedom for the amount of protrusion, it is possible to ensure the efficiency of cargo handling operations while enhancing the flame suppression effect.

[0082] <Flame shielding section in a corner column member [Figure 8]>

[0083] Next, with reference to Figure 8, the flame-blocking structure at the movable connection between the corner column member 13 and the door 20 will be described. Figure 8 is a horizontal cross-sectional view (XY plane) of the container shown in Figure 1 along the F8-F8 line, showing the vicinity of the movable connection between the corner column member 13 and the door 20. Figure 8A shows the closed state of the door 20 with the first gasket 31, and Figure 8B shows the closed state of the door 20 after the first gasket 31 has burned out.

[0084] The corner column members 13 are columnar skeletal members that extend in the Z direction at the four corners of the housing 10 and connect the upper frame member 14 and the lower frame member 15. As shown in Figures 8A and 8B, the corner column members 13 have side projections that protrude laterally toward the inner surface of the door 20. Figure 8A shows an example in which a channel material 81 (C-shaped member) with a C-shaped cross-section is used as the side projection, and Figure 8B shows an example in which a cylindrical material 82 (cylindrical member) is used as the side projection.

[0085] As shown in Figure 8A, during normal use, the opening gap G1 between the corner column member 13 and the outer frame 20a is sealed by the first gasket 31.

[0086] As shown in Figure 8B, when the first gasket 31 burns out, the opening gap G1 is opened. Also, a first shielding gap H1 is formed between the cylindrical material 82 and the outer surface of the outer frame 20a. The opening gap G1 and the first shielding gap H1 are refracted at the first bending portion K1 and extend in different directions, communicating with each other, and together they form the first bending gap J1.

[0087] Specifically, gas or flames moving from the inside of the storage chamber S toward the outside first pass through the first shielding gap H1 in the X direction between the outer surface of the outer peripheral frame 20a and the opposing surfaces of the side protrusions (channel material 81, cylindrical material 82), and then change direction in the Y direction at the opening gap G1 between the corner column member 13 and the outer surface of the outer peripheral frame 20a to reach the outside. In this way, the path in the first bending gap J1 is bent at least once at the first bending section K1, and the structure of the corner column member 13 including the side protrusions (81, 82) and the outer peripheral frame 20a constitute the first flame shielding section B1.

[0088] The channel material 81 shown in Figure 8A is positioned so that its C-shaped opening faces inward into the storage chamber S. The channel material 81 has a groove-shaped space, or groove portion 81a, inside it, and this groove portion 81a has a larger opening than the first shielding gap H1. Flames moving from the inside to the outside of the storage chamber S preferentially enter and remain in the groove portion 81a with its larger opening rather than passing through the narrow first shielding gap H1, thus suppressing the flames from reaching the outside through the first shielding gap H1.

[0089] The cylindrical member 82 shown in Figure 8B is a tubular member with a closed cross-section and has higher cross-sectional rigidity compared to the channel member 81. Therefore, even when subjected to vibrations or external forces during transportation, the gap size of the first shielding gap H1 is less likely to change, resulting in superior stability of the flame shielding function.

[0090] Furthermore, the side protrusions are not limited to the channel material 81 and the cylindrical material 82; it is also possible to use an L-shaped member (L-shaped member; not shown) as shown in Figure 4B. Even when using an L-shaped member, the portion protruding from the corner column member 13 is positioned along the outer surface of the outer frame 20a, forming the first shielding gap H1 and constituting the first bending gap J1. The cross-sectional shape of the side protrusions can be appropriately selected according to the required flame suppression performance, rigidity, manufacturing cost, etc., similar to the upper protrusions of the upper frame member 14 (see Figure 4).

[0091] <Foldable shielding plate for corner column member [Figure 9]>

[0092] Figure 9 is a horizontal cross-sectional view along the line F8-F8, showing an example of using a foldable shielding plate as a movable shielding member at the movable connection between the corner column member 13 and the door 20. Figure 9A shows the third foldable shielding plate in the shielding position, and Figure 9B shows the third foldable shielding plate in the retracted position.

[0093] As shown in Figure 9A, the third foldable shielding plate 91 is rotatably supported on the outer surface side of the corner column member 13 via a hinge 92 having a locking mechanism. The third foldable shielding plate 91 is flat and, when the door 20 is closed, extends from the surface of the corner column member 13 facing the door 20 in a direction along the outer surface of the outer frame 20a, and is positioned in the shielding position. In this shielding position, a first shielding gap H1 is formed between the third foldable shielding plate 91 and the outer surface of the outer frame 20a, and the opening gap G1 and the first shielding gap H1 communicate to form a first bending gap J1.

[0094] As shown in Figure 9B, during cargo handling operations, after opening the door 20, the locking mechanism is released and the third foldable shielding plate 91 is rotated towards the short side wall 18 around the hinge 92 to retract to the retracted position. In the retracted position, the third foldable shielding plate 91 is retracted from near the side edge of the opening 16, thereby increasing the effective opening area of ​​the opening 16 and facilitating the loading and unloading of cargo. After the loading or unloading of cargo is completed, the third foldable shielding plate 91 is rotated back to the shielding position, the locking mechanism is activated, and the door 20 is closed.

[0095] <Flame shielding section in the lower frame member [Figure 10]>

[0096] Next, with reference to Figure 10, the flame-blocking structure at the joint between the lower frame member 15 and the lower end of the door 20 will be described. Figure 10 is a cross-sectional view (YZ plane) of the container shown in Figure 1 along the F10-F10 line, showing the vicinity of the joint between the lower frame member 15 and the lower end of the door 20. Figure 10A shows the closed state of the door 20 with the first gasket 31, and Figure 10B shows the closed state of the door 20 after the first gasket 31 has burned out.

[0097] The lower frame member 15 is a skeletal member that extends in the X direction along the Y-direction end of the floor plate 12. The lower frame member 15 has a lower recess 101 on its upper surface. The lower recess 101 is formed as a groove-shaped space recessed downward from the upper surface of the lower frame member 15 and extends along the X direction.

[0098] The lower end of the door 20, that is, the lower end of the outer frame 20a, extends toward the lower recess 101, and when the door 20 is closed, the lower end of the outer frame 20a and the lower recess 101 form opposing surfaces that overlap in the Y and Z directions. As shown in Figure 10A, during normal use, the opening gap G1 between the lower frame member 15 and the lower end of the outer frame 20a is sealed by the first gasket 31.

[0099] As shown in Figure 10B, when the first gasket 31 burns out, an opening gap G1 is created between the lower end of the outer frame 20a and the inner surface of the lower recess 101. A first shielding gap H1 is formed between the lower end of the outer frame 20a and the inner surface of the lower recess 101. The opening gap G1 and the first shielding gap H1 extend in different directions and communicate with each other, and together they form a first bending gap J1. The lower frame member 15, the lower recess 101, and the lower end of the outer frame 20a form the first flame shielding portion B1 at the lower edge of the opening 16.

[0100] Figures 3 to 9 illustrate the flame shielding structure in the upper frame member 14 and the corner column member 13, which are configured with protruding parts (upper protrusions and side protrusions) that project toward the storage chamber S. In contrast, the flame shielding structure in the lower frame member 15 shown in Figure 10 has a recess (lower recess 101) on the upper surface of the lower frame member 15, and the lower end of the outer frame 20a fits into this recess, forming a bent gap. Thus, the structure that forms a bent gap is not limited to protrusions, but can also be achieved by utilizing recesses.

[0101] <First flame-blocking section B1 [Figures 3-10]>

[0102] As described above, the first flame-blocking section B1 is formed continuously along the periphery (inner periphery) of the opening 16 of the housing 10. More specifically, it is formed continuously and without interruption over the entire circumference of the periphery.

[0103] Specifically, at the upper edge of the opening 16, the first flame shielding section B1 is formed by the upper frame member 14 and the upper projection (fixed shielding member, channel material 42a, L-shaped cross section member 42b, cylindrical material 42c, or a movable shielding member such as a first foldable shielding plate 51, a sliding shielding plate 61, or a second foldable shielding plate 71) and the outer frame 20a of the door 20 (upper frame, upper end) (upper flame shielding structure of the first flame shielding section B1).

[0104] At the side edge of the opening 16, the first flame shielding section B1 (side flame shielding structure of the first flame shielding section B1) is formed by the corner column member 13 and the side projection (channel material 81, cylindrical material 82, or third foldable shielding plate 91) and the outer frame 20a of the door 20 (vertical frame, side end).

[0105] At the lower edge of the opening 16, the lower frame member 15 having a lower recess 101 and the outer peripheral frame 20a of the door 20 (lower frame, lower end) constitute the first flame shielding section B1 (lower flame shielding structure of the first flame shielding section B1).

[0106] The first flame-blocking section B1 forms a first bending gap J1 around the entire circumference of the opening gap G1. This prevents flames from being ejected linearly from the upper, side, or lower edges of the opening 16 from inside the storage chamber S, even after the first gasket 31 has burned out. Meanwhile, the high-temperature, high-pressure gas generated by the combustion of the battery is released to the outside of the storage chamber S through the first bending gap J1, preventing rupture due to excessive pressure rise inside the housing 10.

[0107] <Flame shielding section in the gap between double doors [Figure 11A]>

[0108] Next, with reference to Figure 11A, the flame shielding structure at the joint between the left door 21L and the right door 21R will be described.

[0109] Figure 11A is a horizontal cross-sectional view (XY plane) of the container shown in Figure 1 along the F11A-F11A line, showing the vicinity of the joint between the door tip 21La of the left door 21L and the door tip 21Ra of the right door 21R. Figure 11A shows the closed state of the door 20 with the second gasket 32, and the closed state of the door 20 after the second gasket 32 ​​has burned out appears similar to Figure 11B.

[0110] As shown in Figure 11A, the second gasket 32 ​​is fixed to the door edge 21Ra of the right door 21R and seals the gap G2 between the double doors by contacting the door edge 21La of the opposing left door 21L. The second gasket 32, like the first gasket 31, is made of an elastic sealing material such as EPDM rubber and ensures the airtightness and watertightness of the gap G2 between the double doors during normal use.

[0111] A flat double-door shielding plate 111 is fixed to the inner surface of the left door 21L on the storage room S side. The double-door shielding plate 111 extends in the X direction from near the door tip 21La of the left door 21L toward the right door 21R side, and is positioned to cover the outer edge of the inner surface of the outer frame 20a of the right door 21R. In other words, when viewed from the storage room S side, the double-door shielding plate 111 is positioned to straddle the abutting portion between the left door 21L and the right door 21R. An inclined portion 111a that slopes toward the storage room S side is formed in the center of the double-door shielding plate 111, and this inclined portion 111a forms the second shielding gap H2 described later.

[0112] When the second gasket 32 ​​burns out, the gap G2 between the double doors opens (see Figure 11B). Here, the double door shielding plate 111 is located on a path from the inside of the storage room S to the outside through the gap G2 between the double doors. A second shielding gap H2 is formed between the double door shielding plate 111 and the inner surface of the right door 21R. The double door gap G2 and the second shielding gap H2 are bent at the first bending portion K1 (see Figure 11B), extending in different directions and communicating with each other, and together they constitute the second bending gap J2.

[0113] Specifically, gas or flames moving from inside the storage room S toward the outside first pass through the second shielding gap H2 between the double door shielding plate 111 and the inner surface of the right door 21R in the X direction, then curve around the tip of the double door shielding plate 111 and change direction in the Y direction, reaching the outside through the double door gap G2. The path in the second bending gap J2 is refracted at least once at the first bending section K1. In this way, the double door shielding plate 111 and the door tips 21La of the left door 21L and 21Ra of the right door 21R constitute the second flame blocking section B2.

[0114] The second flame-blocking section B2, like the first flame-blocking section B1, has the function of preventing the linear ejection of flames by forming a second bending gap J2 even after the gasket has burned out, while allowing the release of high-temperature, high-pressure gas. As a result, the ejection of flames is prevented not only in the opening gap G1 between the housing 10 and the door 20, but also in the double door gap G2 of the door 20.

[0115] <Flame barrier in the gap between folding doors [Figure 11B]>

[0116] Figure 11B is a horizontal cross-sectional view (XY plane) of the container shown in Figure 1 along the F11B-F11B line, showing the vicinity of the abutment between the tail end door 23a and the leading end door 23b of the right door 21R. Figure 11B shows the closed state of the door 20 after the third gasket 33 has burned out, and the closed state of the door 20 with the second gasket 32 ​​is shown in the same way as in Figure 11A.

[0117] As shown in Figure 11B, a flame-blocking structure is also provided in the folding door gap G3 between the tail end door 23a and the leading end door 23b. Specifically, a folding door shielding plate 112 is fixed to the inner surface of the leading end door 23b on the storage room S side. The folding door shielding plate 112 extends to cover the outer edge of the inner surface of the adjacent tail end door 23a. After the third gasket 33 is burned out, the folding door gap G3 is opened, and the folding door gap G3 and the third shielding gap H3 communicate to form a third bending gap J3. The path in the third bending gap J3 bends at least once at the first bending section K1. In this way, the folding door shielding plate 112 and the joint between the tail end door 23a and the leading end door 23b constitute a third flame-blocking section B3.

[0118] The third flame-blocking section B3, like the first flame-blocking section B1, has the function of preventing the linear ejection of flames by forming a third bending gap J3 even after the gasket has burned out, while allowing the release of high-temperature, high-pressure gas. As a result, the ejection of flames is prevented not only in the opening gap G1 between the housing 10 and the door 20, but also in the folding gap G3 of the door 20.

[0119] <Internal refraction forming section [Figure 12]>

[0120] Referring to Figure 12, the internal refraction forming section for increasing the number of refractions in the first to third refraction gaps (J1 to J3) will be described. Figure 12 shows modified examples of each flame shielding section shown in Figures 3 to 11, and illustrates a structure in which an internal refraction forming section is added to the end of the refraction gap on the storage chamber S side. Figures 12A to 12D all show the state after the gasket has burned out.

[0121] <First inner bending forming section (upper frame member) [Figure 12A]>

[0122] Figure 12A is a modified example of Figure 4A, showing an example in which a first inner bending portion 121 of an L-shaped member is added to the outer frame 20a of the door 20. The first inner bending portion 121 is provided on the outer surface of the outer frame 20a and forms a second bending portion K2 at the end of the first shielding gap H1 extending in the Z direction on the storage room S side, thereby bending the direction of flame intrusion in the direction of the intersection of the first shielding gap H1, i.e., in the Y direction.

[0123] In the structure shown in Figure 4A, flames from inside the storage chamber S could enter the first shielding gap H1 linearly along the outer surface of the outer frame 20a. In contrast, in the structure shown in Figure 12A, since the first inner refraction forming portion 121 is located adjacent to the end opening of the first shielding gap H1 on the storage chamber S side, the flames are forced to change direction at the second refraction portion K2 before entering the first shielding gap H1. This multi-stage refraction path increases the number of refractions in the entire first refraction gap J1, further improving the flame suppression effect.

[0124] <First internal bending-forming section (corner column member) [Figure 12B]>

[0125] Figure 12B shows an example in which a first inner refraction forming portion 121 of an L-shaped member is added to the side protrusion using the cylindrical material 82 shown in Figure 8B. The first inner refraction forming portion 121 is provided on the outer surface of the outer frame 20a and forms a second refraction portion K2 at the end of the first shielding gap H1 extending in the X direction on the storage chamber S side, refraction of the flame entry direction in the direction of intersection of the first shielding gap H1, i.e., the Y direction. Then, similar to Figure 12A, the number of refractions in the entire first refraction gap J1 is increased by the multi-stage refraction path, further improving the flame suppression effect.

[0126] <First inner bending forming section (lower frame member) [Figure 12C]>

[0127] Figure 12C shows an example in which a first inner refraction forming portion 121 of a C-shaped member is added to a lower frame member 15 having a lower recess 101 as shown in Figure 10B. The first inner refraction forming portion 121 is provided at the lower end of the outer frame 20a and forms a second refraction portion K2 at the end of the first shielding gap H1 extending in the Z direction on the storage chamber S side, refraction of the flame entry direction in the direction of intersection of the first shielding gap H1, i.e., the Y direction. Then, similar to Figure 12A, the number of refractions in the entire first refraction gap J1 is increased by the multi-stage refraction path, further improving the flame suppression effect.

[0128] <Second inner bending-forming section (double door section / folding door section) [Figure 12D]>

[0129] Figure 12D shows an example in which a third inner bending portion 122 of a C-shaped member is added near the joint between the tail end door 23a and the leading end door 23b of the right door 21R, which has the folding door shielding plate 112 shown in Figure 11B. The third inner bending portion 122 is provided on the inner surface of the tail end door 23a and forms a second bending portion K2 at the end of the third shielding gap H3 extending in the X direction on the storage room S side, bending the direction of flame intrusion in the direction of the intersection of the third shielding gap H3, i.e., the Y direction. This multi-stage bending path increases the number of bendings in the entire third bending gap J3, improving the flame suppression effect in the folding door gap G3.

[0130] Similarly to the gap G2 between the double doors, a second inward bending section (not shown) is provided to form a second bending section K2, thereby increasing the number of bending cycles in the entire second bending gap J2 through a multi-stage bending path, and improving the flame suppression effect in the gap G2 between the double doors.

[0131] <Effect of the internal refraction-forming section>

[0132] As shown in Figures 12A to 12D, the first to third inner refraction forming parts 121 and 122 are provided at the ends of the first to third refraction gaps J1 to J3 on the storage chamber S side, and are members that refraction the direction in which flames enter the refraction gaps toward the intersection of the first to third shielding gaps H1 to H3. By providing the first to third inner refraction forming parts 121 and 122, the number of refractions in the first to third refraction gaps J1 to J3 increases by at least one, making it even more difficult for flames to pass through the first to third refraction gaps J1 to J3 and reach the outside. The first to third inner bending forming portions 121 and 122 can be applied to any of the following: the first bending gap J1 in the upper frame member 14, the corner column member 13, and the lower frame member 15 (Figures 12A to 12C), the second bending gap J2 in the double door gap G2, and the third bending gap J3 in the folding door gap G3 (Figure 12D).

[0133] The first to third inner refraction-forming portions 121 and 122 may be provided continuously along the entire length of the refraction gap in the direction of extension, or they may be provided partially along a portion of the extension. When provided along the entire length, the number of refractions increases throughout the entire refraction gap, and a flame emission suppression effect is achieved. On the other hand, when provided partially, gas can be easily released through the portion of the refraction gap where the inner refraction-forming portions are not provided, thus allowing for adjustment of the balance between the flame suppression effect and the gas release performance.

[0134] <Outer refraction forming section [Figure 13]>

[0135] The inner refraction-forming sections 121 and 122 shown in Figures 12A to D both form a second refraction section K2 at the end opening on the storage chamber S side of the first to third refraction gaps J1 to J3, thereby refraction of the flame's intrusion direction. In contrast, Figure 13 shows an outer refraction-forming section that further forms a third refraction section K3 at the outer end opening of the first to third refraction gaps J1 to J3, thereby refraction of the flame's intrusion direction.

[0136] Figure 13A is a modified example corresponding to Figure 12A, showing a cross-sectional view along the line F3-F3. In Figure 13A, the first outer bending portion 131 is provided on the outer surface of the outer frame 20a of the door 20. The first outer bending portion 131 forms a third bending portion K3 at the outer end opening of the opening gap G1 extending in the Y direction, bending the direction of flame entry in the direction of the intersection of the opening gap G1, i.e., upward in the Z direction.

[0137] Figure 13B is a modified example corresponding to Figure 12D, showing a cross-sectional view near the joint between the tail end door 23a and the leading end door 23b of the right door 21R. In Figure 13B, the second outer bending portion 132 is flat and is provided on the outer frame 20a of the tail end door 23a. The second outer bending portion 132 forms a third bending portion K3 at the outer end opening of the folding door gap G3 extending in the Y direction, bending the direction of flame intrusion in the direction of the intersection of the folding door gap G3, i.e., the X direction. A fourth shielding gap H4 is formed between the second outer bending portion 132 and the outer frame 20a of the leading end door 23b.

[0138] The first and second external refraction-forming sections 131 and 132 have different functions than the first to third internal refraction-forming sections 121 and 122. Specifically, the first to third internal refraction-forming sections 121 and 122 provide additional refraction to the flame moving from the inside to the outside of the storage chamber S at the entrance side of the first to third refraction gaps J1 to J3.

[0139] On the other hand, the first and second outer refraction-forming portions 131 and 132 provide additional refraction on the exit side of the first to third refraction gaps J1 to J3, thereby forcing a final change of direction just before the flame reaches the outside.

[0140] In addition, the first and second outer bending-forming portions 131 and 132 also have the function of refracting the direction of entry of flames attempting to enter from the outside through the outer end openings of the first to third bending gaps J1 to J3, thereby suppressing entry. This has the effect of reducing the risk of flames generated in adjacent containers entering the interior through the opening gap G1, the gap between the double doors G2, and the gap between the folding doors G3, for example, when multiple containers are arranged adjacent to each other.

[0141] Furthermore, the inner refraction forming section and the outer refraction forming section may be provided individually, or both may be provided in combination. As shown in Figure 13, when both are provided, additional refraction is formed at both the end of the refraction gap on the side of the storage chamber S and the end on the outside, thereby improving the flame shielding performance against both flame ejection from the storage chamber S to the outside and flame intrusion from the outside into the storage chamber S.

[0142] <Explanation of variations>

[0143] Variation 1: Combination of different shielding materials The first flame-blocking section B1 can be constructed by combining different types of shielding members at the upper edge, side edge, and lower edge of the opening 16. For example, a movable shielding member (first foldable shielding plate 51, sliding shielding plate 61, or second foldable shielding plate 71) can be used at the upper edge of the opening 16, a fixed shielding member (channel material 81 or cylindrical material 82) can be used at the side edge, and a lower recess 101 can be used at the lower edge. The type of shielding member at each position can be individually selected according to the impact on cargo handling operations at that position, the required flame suppression performance, manufacturing costs, etc. Even with such combinations of different types of shielding members, the function of the first flame-blocking section B1 can be achieved as long as the first bending gap J1 is formed continuously around the entire circumference of the opening 16.

[0144] Modification 2: Sliding shielding member in a corner column member Although the movable shielding members shown in Figures 5 to 7 are all examples of being installed on the upper frame member 14, the movable shielding members can also be applied to the corner column members 13. A sliding shielding plate can be provided on the corner column member 13 in place of or in addition to the third foldable shielding plate 91 shown in Figure 9.

[0145] Modification 3: Outer bending forming portion in corner column member and lower frame member Figures 13A and 13B illustrate the first outer bending portion 131 in the upper frame member 14 and the second outer bending portion 132 in the folding door portion. However, the outer bending portion can also be similarly provided at the outer end opening of the first bending gap J1 in the corner column member 13 and the lower frame member 15.

[0146] Modification 4: Movable shielding plate in double doors and folding doors The double-door section shielding plate 111 and the folding door section shielding plate 112 shown in Figure 11 are both fixed shielding plates fixed to the inner surface of the doors, but they can also be made movable by hinges or slides.

[0147] Specifically, the double-door section shielding plate 111 can be a foldable shielding plate or a sliding shielding plate that can be extended and retracted by sliding, which is rotatably supported on the inner surface of the left door 21L via a hinge. In the shielding position, the foldable or sliding shielding plate covers the outer edge of the inner surface of the right door 21R, similar to the fixed double-door section shielding plate 111, and forms a second shielding gap H2. After opening the door 20, the shielding plate is moved to a retracted position along the inner surface of the left door 21L. This expands the effective opening area.

[0148] Similarly, the folding door shielding plate 112 can be a foldable shielding plate or a sliding shielding plate. In this case, when the door 20 is closed, the foldable shielding plate or sliding shielding plate can form a third bending gap J3, thereby providing a flame blocking function.

[0149] Modification 5: Multi-stage refraction structure In the embodiments shown in Figures 3 to 10, the first refraction gap J1 was structured to form at least one refraction through communication between the opening gap G1 and the first shielding gap H1. In this modified example, a multi-stage refraction structure combining multiple shielding members is described in order to further increase the number of refractions.

[0150] For example, two shielding members are provided on the lower surface of the upper frame member 14: a first-stage upper protrusion and a second-stage upper protrusion, which are offset from each other in the Y direction. The first-stage upper protrusion forms a first-stage shielding gap between itself and the outer surface of the outer frame 20a, and the second-stage upper protrusion forms a second-stage shielding gap between itself and the outer surface of the outer frame 20a at a position offset from the first-stage upper protrusion in the Y direction. The first-stage shielding gap and the second-stage shielding gap communicate with each other through the space between them, and together with the opening gap G1, they form a multi-stage refraction gap that bends at least twice in the path from the inside to the outside of the storage chamber S.

[0151] The multi-stage bending structure increases the number of times the flame must pass through to reach the outside, thus improving the flame suppression effect compared to a structure with a single shielding member. Since heat transfer to the wall surface and stretching of the flame front are repeated at each bending point, the flame suppression effect is cumulatively exerted. The multi-stage bending structure can also be provided in combination with the inner bending forming parts 121, 122 and outer bending forming parts 131, 132 shown in Figures 12 and 13, in which case the number of bendings in the entire bending gap is further increased.

[0152] In the multi-stage bending structure, the multiple shielding members can all be fixed shielding members (see Figure 4) or movable shielding members (see Figures 5 to 7), and it is also possible to combine fixed and movable members. Furthermore, the multi-stage bending structure is not limited to the upper frame member 14, but can be applied to the corner column member 13, the lower frame member 15, the double door section, and the folding door section.

[0153] Modification 6: Changes in gap dimensions along the direction of extension In the embodiments shown in Figures 3 to 11, the width of the first shielding gap H1 (the distance between the shielding member and the outer frame 20a) was described as being constant along the extending direction. However, the width of the first shielding gap H1 can also be varied along its extending direction.

[0154] For example, by changing the amount of protrusion of the upper projection provided on the upper frame member 14 (the dimension in the direction toward the outer surface of the outer frame 20a) along the X direction, the width of the first shielding gap H1 can be changed along the X direction. Specifically, the width of the first shielding gap H1 can be narrowed by increasing the amount of protrusion of the upper projection in the X-direction center of the upper frame member 14, and widened by decreasing the amount of protrusion at the X-direction ends.

[0155] With this configuration, the flame suppression effect is enhanced in the central part in the X direction by a narrow gap, while the release of combustion gases is promoted in the end part in the X direction by a wider gap. In other words, it is possible to adjust the balance between flame suppression performance and gas release performance along the direction in which the bending gap extends.

[0156] Furthermore, the change in the gap dimension along the extending direction is not limited to the upper frame member 14, but can be similarly applied to the shielding gaps in the corner column member 13, lower frame member 15, double door section, and folding door section. In addition, instead of continuously changing the width of the shielding gap, it may be changed in stages, with different constant widths set in multiple sections along the extending direction.

[0157] Modification 7: Detachable shielding member In the embodiments shown in Figures 3 to 10, the shielding member was either a fixed shielding member (Figures 3, 4, and 8) or a movable shielding member (Figures 5 to 7 and 9). The fixed shielding member was permanently fixed to the housing 10, while the movable shielding member was movable between a shielded position and a retracted position but was held without being separated from the housing 10. In this modification, a detachable shielding member configured to be detachable from the housing 10 will be described.

[0158] The detachable shielding member is attached to the upper frame member 14, the corner column member 13, or the lower frame member 15 by detachable fastening means such as bolt fastening, pin connection, or fitting. When attached, the detachable shielding member forms a shielding gap between itself and the outer surface of the outer frame 20a, similar to the fixed shielding member, and communicates with the opening gap G1 to form a bent gap, thereby exhibiting a flame blocking function.

[0159] During cargo handling or maintenance, the detachable shielding member can be completely removed from the opening 16 by detaching it from the housing 10. While the movable shielding member remains attached to the housing 10 even in the retracted position, the detachable shielding member can be completely separated from the housing 10, thus further increasing the effective opening area of ​​the opening 16. In addition, if the detachable shielding member is damaged or deformed, only that shielding member can be replaced, resulting in excellent maintainability.

[0160] Furthermore, the detachable shielding members allow for adjustment of flame suppression performance according to the type, quantity, or risk level of the stored batteries by replacing and installing shielding members with different cross-sectional shapes or dimensions. For example, when storing high-energy-density batteries, a shielding member with a large protrusion can be installed to narrow the shielding gap, while when storing relatively low-risk batteries, it can be replaced with a shielding member with a smaller protrusion to improve gas release performance.

[0161] The detachable shielding member can be applied to any of the upper frame member 14, the corner column member 13, and the lower frame member 15. Furthermore, the cross-sectional shape of the detachable shielding member may be a cylindrical member, a C-shaped member, an L-shaped member, or a flat plate, similar to the fixed shielding member. Additionally, it is possible to configure the opening 16 so that a portion of its circumference is covered by a detachable shielding member, while other sections are covered by fixed or movable shielding members.

[0162] Furthermore, the concept of a detachable shielding member can also be applied to the double-door section shielding plate 111 and the folding door section shielding plate 112. That is, the double-door section shielding plate 111 or the folding door section shielding plate 112 can be a detachable shielding plate that can be detachably attached to the inner surface of the door 20.

[0163] Although each embodiment of the present disclosure has been described in detail above, it will be readily apparent to those skilled in the art that many modifications are possible without substantially departing from the novelty and effects of the present disclosure. All such modifications are included within the scope of the present disclosure.

[0164] <Note>

[0165] The following notes are not intended to limit the scope of the invention as described in the claims, but rather to illustrate the diverse aspects of the invention included in this disclosure.

[0166] (Note 1) A housing (10) having a storage chamber (S) for storing a storage battery and an opening (16) for inserting and removing the storage battery from the storage chamber (S), The opening (16) is provided with a door (20) that can be opened and closed, When the door (20) is closed, closing the opening (16), it has a flame shield (B1) that prevents flames from being ejected from inside the storage chamber (S) to the outside of the housing (10). The flame shielding section (B1) is located on the storage compartment (S) side and has a shielding member that covers the outer edge of the inner surface of the door (20). The shielding member forms a refraction gap (J1) between the opening (16) and the door (20) that causes the flame to bend at least once in the flame ejection path from inside the storage chamber (S) to the outside of the housing (10), in a fire-resistant storage body for a storage battery. According to Appendix 1, regardless of the presence or absence of a gasket, the bending gap structure can prevent the emission of flames.

[0167] (Note 2) A housing (10) having a storage chamber (S) for housing a storage battery and an opening (16), The opening (16) is provided with a door (20) that can be opened and closed, A fire-resistant storage body for a storage battery, wherein, when the door (20) is closed, the gap formed between the opening (16) and the door (20) is formed to bend at least once in the path from inside the storage chamber (S) to the outside of the housing (10). According to Appendix 2, the mere presence of a refracted gap can prevent the flame from escaping in a straight line.

[0168] (Note 3) A housing (10) having a storage chamber (S) for housing a storage battery and an opening (16), A door (20) that can open and close the aforementioned opening (16), The system includes a gasket (31) that seals the opening gap (G1) formed between the opening (16) and the door (20) in the closed state, The housing (10) has a projection (41) that is located on the side of the storage chamber (S) and protrudes so as to cover the outer edge of the inner surface of the door (20), The aforementioned protruding portion (41) forms a shielding gap (H1) between itself and the door (20) after the gasket (31) has burned out, communicating with the opening gap (G1) and extending in a direction different from the opening gap (G1), in a fire-resistant storage body for a storage battery. According to Appendix 3, the protruding portion creates a shielding gap in a different direction from the opening gap, preventing the flame from traveling in a straight line.

[0169] (Note 4) A housing (10) having a storage chamber (S) for housing a storage battery and an opening (16), The opening (16) is provided with a door (20) that can be opened and closed, With the door (20) closed, the gas path from inside the storage chamber (S) through the opening (16) to the outside of the housing (10) includes at least one change of direction. The aforementioned path is configured to allow the passage of gas while suppressing the passage of flame, in a fire-resistant enclosure for a storage battery. According to Appendix 4, combustion gases can be released to the outside to prevent an increase in internal pressure while suppressing the emission of flames.

[0170] (Note 5) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when the door is closed, The shielding member is a detachable shielding member configured to be detachable from the housing (10), The detachable shielding member is attached to the housing (10) by bolt fastening, pin connection, or fitting, and when removed, it is completely separated from the housing (10), making it a fire-resistant housing for a storage battery. According to Appendix 5, the effective opening area of ​​the opening can be maximized by removing the shielding member, and the shielding member can also be replaced.

[0171] (Note 6) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a removable shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when the door is closed, The aforementioned detachable shielding member is configured to be interchangeable with other detachable shielding members having different cross-sectional shapes or dimensions, in a fire-resistant housing for a storage battery. According to Appendix 6, the flame suppression performance can be adjusted by replacing the shielding material depending on the type and degree of risk of the stored battery.

[0172] (Note 7) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when the door is closed, A fire-resistant storage body for a battery, wherein a fixed shielding member is provided in a first section of the periphery of the opening (16), and a movable shielding member is provided in a second section of the periphery of the opening (16). According to Appendix 7, the type of shielding material can be selected according to the cargo handling conditions of each section, making it possible to achieve both flame protection performance and cargo handling efficiency.

[0173] (Note 8) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), The housing (10) has a plurality of protrusions that are located on the storage compartment (S) side and protrude so as to cover the outer edge of the inner surface of the door (20), The plurality of protrusions are arranged offset from each other to form a refraction gap (J1) between the opening (16) and the door (20) that causes the flame to bend at least twice in the flame ejection path from inside the storage chamber (S) to the outside of the housing (10), in a fire-resistant storage body for a storage battery. According to Appendix 8, the flame-suppressing effect is cumulatively exerted by increasing the number of refractions, thereby improving the flame-suppressing effect.

[0174] (Note 9) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage body for a battery, wherein the width of the shielding gap (H1) formed between the shielding member and the door (20) changes along the extending direction of the shielding member. According to Appendix 9, the distribution of flame suppression performance and gas release performance can be adjusted along the direction of extension.

[0175] (Note 10) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage body for a battery, wherein the width of the shielding gap (H1) formed between the shielding member and the door (20) is set to be narrower at the center of the extending direction of the shielding member than at the ends. According to Appendix 10, flame suppression can be enhanced in the central section and gas release can be promoted at the edges.

[0176] (Note 11) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a movable shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed, The movable shielding member is a sliding shielding member that is slidably supported with respect to the housing (10), and is a fire-resistant storage body for a battery that is housed inside the housing (10) when in the retracted position. According to Appendix 11, in the retracted position, the shielding member does not protrude from the outer surface of the housing, thus avoiding interference with adjacent structures.

[0177] (Note 12) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), The door (20) includes a right door (21R) and a left door (21L) configured as double doors, with a double door gap (G2) between the right door (21R) and the left door (21L), or each of the right door (21R) and the left door (21L) is configured as a folding door consisting of a door-end door (23a) and a door-front door (23b), with a folding door gap (G3) between the door-end door (23a) and the door-front door (23b), In at least one of the gaps between the double doors (G2) or the folding door (G3), a refraction gap is formed by a shielding member located on the storage room (S) side, causing the flame to bend at least once in the flame ejection path from inside the storage room (S) to the outside of the housing (10). The aforementioned shielding member is a movable shielding plate that can be displaced between a shielding position and a retracted position, in a fire-resistant storage body for a storage battery. According to Appendix 12, when the doors are opened, the shielding plates can be retracted to avoid interference between the doors, improving the efficiency of cargo handling operations.

[0178] (Note 13) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), The door (20) includes a right door (21R) and a left door (21L) configured as double doors, and each of the right door (21R) and the left door (21L) is configured as a folding door consisting of a door-end door (23a) and a door-end door (23b). A fire-resistant storage unit for a battery, wherein bending gaps (J1, J2, J3) are formed in each of the following: an opening gap (G1) between the housing (10) and the door (20), a double door gap (G2) between the right door (21R) and the left door (21L), and a folding door gap (G3) between the tail end door (23a) and the leading end door (23b), causing the flame to bend at least once in its ejection path. According to Appendix 13, flames will not be ejected from any gaps, not just the gaps between openings, but from all gaps between doors.

[0179] (Note 14) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), The shielding gap (H1) formed between the shielding member and the door (20) and the opening gap (G1) formed between the opening (16) and the door (20) are in communication to form a bending gap (J1). A fire-resistant storage body for a battery, wherein the cross-sectional dimensions of the shielding gap (H1) are smaller than the cross-sectional dimensions of the opening gap (G1). According to Appendix 14, the flame suppression effect is exerted in the narrow gap on the storage chamber side, while gas release is ensured in the wider gap on the outside side.

[0180] (Note 15) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the side of the storage chamber (S) that covers the outer edge of the inner surface of the door (20), A fire-resistant storage container for a battery, wherein the width of the shielding gap (H1) formed between the shielding member and the door (20) is 2 mm or more and 10 mm or less, and the width of the opening gap (G1) formed between the opening (16) and the door (20) is 15 mm or more and 25 mm or less. According to Appendix 15, the narrowness is sufficient for extinguishing flames, while the wideness is sufficient for releasing combustion gases.

[0181] (Note 16) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), The housing (10) has a movable shielding member provided on the skeletal member that forms the opening (16), The fire-resistant storage unit for a battery is configured such that the movable shielding member is displaceable between a shielding position located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), and a retracted position that expands the opening (16) by moving away from the inner surface of the door (20). According to Appendix 16, the effective opening area of ​​the opening can be increased by retracting the shielding member, thereby achieving both cargo handling efficiency and flame shielding performance.

[0182] (Note 17) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), The housing (10) has a fixed shielding member fixed to the skeletal member that forms the opening (16), The fixed shielding member is located on the storage chamber (S) side and covers the outer edge of the inner surface of the door (20), thereby forming a refraction gap (J1) between the opening (16) and the door (20) that causes the flame to refract at least once in the flame ejection path from inside the storage chamber (S) to outside the housing (10), in a fire-resistant storage body for a storage battery. According to Appendix 17, a permanent flame-blocking function is provided by the fixed shielding member.

[0183] (Note 18) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), The shielding member constitutes a flame blocking section (B1) between the opening (16) and the door (20) that forms a refraction gap (J1) in which the flame ejection path from inside the storage chamber (S) to the outside of the housing (10) is refraction at least once. The flame-blocking portion (B1) is a fire-resistant housing for a storage battery, continuously formed around the entire periphery of the opening (16). According to Appendix 18, flames are prevented from erupting from the entire circumference of the opening.

[0184] (Note 19) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), In the closed state of the door (20), the refraction gap (J1) formed between the opening (16) and the door (20) forms a path that bends one or more times in the flame ejection path from inside the storage chamber (S) to the outside of the housing (10), in a fire-resistant storage body for a storage battery. According to Appendix 19, the flame suppression effect cumulatively improves with increasing refraction frequency.

[0185] (Note 20) A fire-resistant storage body for a storage battery comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), A fire-resistant storage container for a battery, wherein, when the door (20) is closed, the angle of refraction of the bent portion (K1) in the bent gap (J1) formed between the opening (16) and the door (20) is approximately 90 degrees. According to Appendix 20, forcing a change of direction approximately perpendicular to the straight-ahead direction of the flame effectively attenuates the kinetic energy of the flame.

[0186] (Note 21) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage body for a battery, wherein, when the door (20) is closed, the bent gap (J1) formed between the opening (16) and the door (20) has a first bent portion (K1) located at the boundary between the opening gap (G1) between the opening (16) and the door (20) and the shielding gap (H1) between the shielding member and the door (20), and a second bent portion (K2) located at the end of the bent gap (J1) on the storage chamber (S) side. According to Appendix 21, an additional refraction is formed on the entrance side of the refraction gap, suppressing the entry of flames.

[0187] (Note 22) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage body for a battery, wherein, when the door (20) is closed, the bent gap (J1) formed between the opening (16) and the door (20) has a first bent portion (K1) located at the boundary between the opening gap (G1) between the opening (16) and the door (20) and the shielding gap (H1) between the shielding member and the door (20), and a third bent portion (K3) located at the outer end of the bent gap (J1). According to Appendix 22, an additional refraction is formed on the exit side of the refraction gap, suppressing the arrival of flames to the outside and the intrusion of flames from the outside.

[0188] (Note 23) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage body for a battery, wherein, when the door (20) is closed, the bent gap (J1) formed between the opening (16) and the door (20) has a first bent portion (K1) located at the boundary between the opening gap (G1) between the opening (16) and the door (20) and the shielding gap (H1) between the shielding member and the door (20), a second bent portion (K2) located at the end of the bent gap (J1) on the storage chamber (S) side, and a third bent portion (K3) located at the end of the bent gap (J1) on the outer side. According to Appendix 23, additional refraction is formed at both ends of the refraction gap, suppressing both flame ejection from the storage chamber and flame intrusion from the outside.

[0189] (Note 24) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member located on the storage chamber (S) side and covering the outer edge of the inner surface of the door (20), A fire-resistant storage container for a battery, wherein, when the door (20) is closed, the bent gap (J1) formed between the opening (16) and the door (20) has a first bent portion (K1), a second bent portion (K2), and a third bent portion (K3), and the angle of bend in each of the first bent portion (K1), the second bent portion (K2), and the third bent portion (K3) is approximately 90 degrees. According to Appendix 24, a multi-stage flame suppression effect is achieved by forcing a change of direction at approximately a right angle to the flame at each bending point.

[0190] (Note 25) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a refraction gap (J1) between the opening (16) and the door (20) when closed, A fire-resistant storage container for batteries, wherein the fire-resistant storage body for batteries is configured as a container that is a box-shaped storage body having a skeletal structure for transporting and / or storing batteries. According to Appendix 25, it has a skeletal structure as a container while also exhibiting flame-blocking functionality through bending gaps.

[0191] (Note 26) A fire-resistant storage container for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a refraction gap (J1) between the opening (16) and the door (20) when the opening (16) is closed, A fire-resistant storage container for batteries, having corner fittings at the upper and lower ends of the four corners of the housing (10), and capable of intermodal transport. According to Appendix 26, continuous transport between multiple transport modes is possible, and the flame suppression function is maintained during transport.

[0192] (Note 27) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a refraction gap (J1) between the opening (16) and the door (20) when the door is closed, A fire-resistant storage body for a battery, wherein at least a portion of the wall surface of the enclosure (10) is made of weather-resistant steel. According to Appendix 27, weather resistance is ensured to withstand long-term use in outdoor environments.

[0193] (Note 28) Use of a fire-resistant storage container for a storage battery as a storage container for indoor stationary storage, comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed. According to Appendix 28, the flame-blocking function is achieved within the building by the bending gap, preventing the spread of fire to surrounding facilities.

[0194] (Note 29) Use of a fire-resistant storage container for storage batteries as a storage container for outdoor stationary storage, comprising a housing (10) having a storage chamber (S) for storing storage batteries and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed. According to Appendix 29, the flame-blocking function due to the refraction gap is exhibited in outdoor environments.

[0195] (Note 30) Use of a fire-resistant storage container for batteries, which includes a housing (10) having a storage chamber (S) for storing batteries and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed, for intermodal transport of batteries. According to Appendix 30, the flame suppression function is maintained during consistent transport across multiple transport modes.

[0196] (Note 31) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when the door is closed; A battery storage unit comprising a battery stored in the aforementioned storage chamber (S). According to Appendix 31, the storage unit and the battery are integrated into a single unit to provide a flame emission prevention function.

[0197] (Note 32) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a refraction gap (J1) between the opening (16) and the door (20) when the door is closed; A battery storage unit comprising a storage battery stored in the aforementioned storage chamber (S), The battery storage unit is a battery storage unit in which the battery is fixed to the floorboard (12) in the storage room (S) via fasteners. According to Appendix 32, the risk of internal short circuits and thermal runaway caused by misalignment of the battery is reduced.

[0198] (Note 33) A battery storage facility comprising a housing (10) having a storage chamber (S) for storing batteries and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed, wherein a plurality of fire-resistant storage containers for batteries are arranged adjacent to each other, A battery storage facility in which each of the adjacent fire-resistant storage containers for batteries is capable of releasing gas from within the storage chamber (S) to the outside via the bending gap (J1), and the bending gap (J1) prevents the intrusion of flames ejected from adjacent containers. According to Appendix 33, the spread of fire between adjacent containers is prevented, and multiple containers can be placed in close proximity.

[0199] (Note 34) A battery storage facility comprising a housing (10) having a storage chamber (S) for storing batteries and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed, wherein a plurality of fire-resistant storage containers for batteries are arranged adjacent to each other, The aforementioned fire-resistant storage container for storage batteries is a storage facility for storage batteries, having external bending forming portions (131, 132) at the outer end opening of the bending gap (J1) that bend the direction of flame intrusion. According to Appendix 34, the ability to block flame intrusion from the outside is further improved, and the prevention of fire spread between containers is strengthened.

[0200] (Note 35) A battery storage facility comprising a plurality of adjacent fire-resistant storage units for batteries, each comprising a housing (10) having a storage chamber (S) for storing batteries and an opening (16), a door (20) that can open and close the opening (16), and a shielding member that forms a bending gap (J1) between the opening (16) and the door (20) when closed, A battery storage facility in which each of the adjacent fire-resistant storage units for batteries is capable of releasing gas from within the storage chamber (S) to the outside via the bending gap (J1), and the bending gap (J1) prevents the intrusion of flames ejected from the adjacent storage unit. According to Appendix 35, the spread of fire is prevented when adjacent storage units are placed together, not limited to containers.

[0201] (Note 36) A method for preventing flame emission in a fire-resistant storage container for a storage battery, comprising a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16), and a door (20) that can open and close the opening (16), When the door (20) is closed, the shielding member located on the storage room (S) side covers the outer edge of the inner surface of the door (20), forming a shielding gap (H1) that communicates with the opening gap (G1) formed between the opening (16) and the door (20). A flame emission prevention method comprising forming a refraction gap (J1) in which the flame emission path from inside the storage chamber (S) to the outside of the housing (10) is refracted at least once by the opening gap (G1) and the shielding gap (H1), thereby preventing the emission of flames while allowing the gas inside the storage chamber (S) to be released to the outside. According to Appendix 36, the formation of a bending gap prevents the rise in internal pressure while preventing the eruption of flames.

[0202] (Note 37) The process includes replacing a detachable shielding member provided in the opening (16) of a fire-resistant storage container for a storage battery with a second detachable shielding member having a second cross-sectional shape or dimensions different from the first cross-sectional shape or dimensions. A method for adjusting the flame suppression performance of a fire-resistant housing for storage batteries. According to Appendix 37, the flame suppression performance can be adjusted according to the battery being housed by replacing the shielding material.

[0203] (Note 38) A step of forming a housing (10) having a storage chamber (S) for housing a storage battery and an opening (16), A step of providing a shielding member that protrudes towards the storage chamber (S) along the periphery of the opening (16), The process includes attaching a door (20) that can open and close the opening (16) to the housing (10), When the door (20) is closed, a refraction gap (J1) is formed between the shielding member and the door (20) such that the flame ejection path from inside the storage chamber (S) to the outside of the housing (10) is refraction at least once. A method for manufacturing a fire-resistant enclosure for storage batteries. According to Appendix 38, the attachment of the shielding member creates a bending gap, and a housing with flame-blocking function is manufactured.

[0204] (Note 39) A fire-resistant storage body for a storage battery comprising: a housing (10) having a storage chamber (S) for storing a storage battery and an opening (16); a door (20) that can open and close the opening (16); and a shielding member that forms a refraction gap (J1) between the opening (16) and the door (20) when closed, The aforementioned bending gap (J1) allows gas to pass through after the gasket (31) burns out, while suppressing the passage of flames by reducing the flame temperature and extinguishing the flame due to heat transfer to the wall surface, making it a fire-resistant housing for a storage battery. According to Appendix 39, this achieves both the prevention of internal pressure rise due to the release of combustion gases and the prevention of flame eruption due to the flame suppression effect. [Explanation of Symbols]

[0205] 1. Fire-resistant storage container for batteries (container) 10 cabinets 13 Corner column members 14 Upper frame member 15 Lower frame member 16 Opening 17 Long side wall 17a Longitudinal side wall (opening side) 17b Longitudinal side wall (fixed wall side) 18 Short side wall 20 doors 20a Outer frame 21 Double doors 21L Left Door 21La Left door tip 21R Right Door 21Ra Right door edge 22 Folding Doors 23a Door on the tail end 23a1 Joint end 23b Door on the leading edge side 31 First gasket 32 Second gasket 33 Third gasket 41 Upper protrusion 42a Channel material (C-shaped member) 42b Member with an L-shaped cross-section (L-shaped member) 42c Cylindrical material (cylindrical component) 51. First foldable shielding plate 61. Sliding shielding plate 71. Second foldable shielding plate 91 Third foldable shielding plate 101 Lower recess 111 Double door section shielding plate 112 Folding door section shielding plate 121 First inner refraction forming portion 122 Second inner refraction forming portion 131 First outer refraction forming portion 132 Second outer refraction forming portion B1 First flame shielding section B2 Second flame shielding section B3 Third Flame Barrier G1 Opening gap G2 Gap between double doors G3 Folding door gap H1 First shielding gap H2 Second shielding gap H3 Third shielding gap H4 Fourth shielding gap J1 First refraction gap J2 Second refraction gap J3 Third refraction gap K1 First refraction section K2 Second refraction K3 Third refraction S Storage Room

Claims

1. A housing having a storage chamber for housing a storage battery and an opening for inserting and removing the storage battery from the storage chamber, A door that can open and close the aforementioned opening, The door is in a closed state with the opening closed, and includes a first gasket that seals the gap between the opening and the door, The first gasket normally seals the opening gap, and when the battery burns, it burns out due to the rise in temperature inside the storage chamber, thereby releasing the seal on the opening gap and allowing the storage chamber to communicate with the outside of the housing. A fire-resistant enclosure for storage batteries, In the closed state, it has a first flame-blocking section that prevents flames from being ejected from the storage chamber to the outside of the housing, The first flame-blocking section has a first shielding member located on the storage compartment side and covering the outer edge of the inner surface of the door, thereby forming a first shielding gap that communicates with the opening gap. The opening gap and the first shielding gap are formed to communicate with each other so that, in the burnt-out state of the first gasket, the flame ejection path from the storage chamber to the outside of the housing bends at least once, thereby forming a first refraction gap that prevents the ejection of flames. Fire-resistant storage container for batteries.

2. The aforementioned door is a double door, The aforementioned double doors are, The right door and, Left door and, It has a second gasket that seals the gap between the double doors formed between the right door and the left door, In the closed state of the door when the second gasket has burned out, it has a second flame-blocking section that prevents flames from escaping from the storage compartment to the outside of the housing through the gap between the double doors. The second flame-blocking section has a second shielding member located on the storage compartment side and covering the outer edge of the inner surface of at least one of the right door or the left door, thereby forming a second shielding gap that communicates with the gap between the double doors. The gap between the double doors and the second shielding gap are formed to communicate with each other so as to refract at least once in the flame ejection path from the storage room to the outside of the housing, thereby forming a second refraction gap that prevents the ejection of flames. A fire-resistant storage container for a battery as described in claim 1.

3. The aforementioned door is a folding door, The aforementioned folding door is The door on the tail end, The door on the front side, It has a third gasket that seals the gap between the folding doors formed between them, In the closed state of the door when the third gasket has burned out, it has a third flame-blocking section that prevents flames from passing through the gap in the folding door and escaping from the storage compartment to the outside of the housing. The third flame-blocking portion has a third shielding member located on the storage room side that covers the outer edge of the inner surface of at least one of the door-end side door or the door-front side door, thereby forming a third shielding gap that communicates with the gap between the folding doors. The folding door gap and the third shielding gap are connected and formed such that the flame ejection path from the storage room to the outside of the housing bends at least once, thereby forming a third bending gap that prevents the ejection of flames. A fire-resistant storage container for a battery as described in claim 1.

4. The first shielding member includes the upper frame member of the housing that forms the opening, The upper frame member is located on the storage compartment side and has an upper projection that protrudes downward so as to cover the inner surface of the adjacent door. A fire-resistant storage container for a battery as described in claim 1.

5. The first shielding member includes the corner column member of the housing that forms the opening, The corner column member is located on the storage compartment side and has a side projection that protrudes laterally so as to cover the outer edge of the inner surface of the door adjacent to the corner column member. A fire-resistant storage container for a battery as described in claim 1.

6. The first shielding member includes the lower frame member of the housing that forms the opening, The lower frame member is located on the storage compartment side and has a lower recess formed to cover the outer edge of the inner surface of the adjacent door. A fire-resistant storage container for a battery as described in claim 1.

7. The aforementioned upper protrusion is a movable shielding member provided on the upper frame member. The movable shielding member is configured to be displaceable between a shielding position facing the inner surface of the door and a retracted position that expands the opening by moving away from the inner surface of the door. The fire-resistant storage container for a battery according to claim 4.

8. The aforementioned side projection is a movable shielding member provided on the corner column member, The movable shielding member is configured to be displaceable between a shielding position facing the inner surface of the door and a retracted position that expands the opening by moving away from the inner surface of the door. The fire-resistant storage container for a battery according to claim 5.

9. The movable shielding member is, A foldable shielding plate that is displaced by rotation between the shielding position and the retracted position, The folding shield plate is rotatably supported by a hinge connecting member, A fire-resistant storage container for a battery according to claim 7 or 8.

10. The movable shielding member is, A sliding shielding plate is held to move up and down relative to the upper frame member, It has a magnet that holds the sliding shielding plate in the retracted position, The sliding shielding plate is positioned lower from the upper frame member in the shielding position, and rises toward the upper frame member in the retracted position and is held by the upper frame member via the magnet. A fire-resistant storage container for a battery according to claim 7.

11. The aforementioned upper protrusion is a fixed shielding member provided on the upper frame member. The fixed shielding member is at least one of a cylindrical member, a C-shaped member, or an L-shaped member. The fire-resistant storage container for a battery according to claim 4.

12. The second shielding member is a double door shielding plate located on the storage compartment side, extending from the inner surface of either the right door or the left door that is fixed, to cover the outer edge of the inner surface of the adjacent other door. The fire-resistant storage container for a battery according to claim 2.

13. The third shielding member is a folding door shielding plate located on the storage room side, extending from the inner surface of either the door-end side door or the door-front side door that is fixed, to cover the outer edge of the inner surface of the adjacent other door. A fire-resistant storage container for a battery as described in claim 3.

14. The device comprises at least one of the following: a first inner refraction forming portion that refractions the direction in which flames enter the end of the first refraction gap on the storage chamber side in the direction intersecting the first shielding gap, or a first outer refraction forming portion that refractions the outer end opening of the first refraction gap in the direction intersecting the opening gap. A fire-resistant storage container for a battery as described in claim 1.

15. The device has at least one of the following: a second inner refraction forming portion that refractions the direction of flame entry into the storage chamber side end of the second refraction gap in the direction intersecting the second shielding gap, or a second outer refraction forming portion that refractions the direction of flame entry into the outer end of the second refraction gap in the direction intersecting the double door gap. The fire-resistant storage container for a battery according to claim 2.

16. The device has at least one of the following: a third inner refraction forming portion that refractions the direction of flame entry into the storage chamber side end of the third refraction gap in the direction intersecting the third shielding gap, or a third outer refraction forming portion that refractions the direction of flame entry into the outer end of the third refraction gap in the direction intersecting the folding door gap. A fire-resistant storage container for a battery as described in claim 3.

17. A fire-resistant storage container for a storage battery according to any one of claims 1 to 8 or 10 to 16, The fire-resistant storage container for the battery is configured as a container, which is a box-shaped storage container having a skeletal structure for transporting and / or storing the battery. Fire-resistant storage container for batteries.

18. Use of the fire-resistant storage container for storage batteries described in claim 17, which stores storage batteries in the fire-resistant storage container for storage batteries, as a transport container and / or a stationary storage container.

19. After using the container as a transport container with the battery stored inside, the container is then used as a stationary storage container with the battery still stored in the storage compartment, or After using the container for stationary storage with the battery stored inside, the container is then used as a transport container with the battery still stored in the storage compartment. The use described in claim 18.

20. A fire-resistant storage container for a storage battery according to any one of claims 1 to 8 or 10 to 16, The storage compartment includes a storage battery, Battery storage unit.

21. A battery storage facility comprising a plurality of fire-resistant storage containers for batteries as described in claim 17, arranged adjacent to each other, Each of the adjacent fire-resistant storage containers for the battery is capable of releasing gas from inside the storage chamber to the outside through at least the first refraction gap, and the intrusion of flames ejected from the adjacent container is suppressed by at least the first refraction gap. Battery storage facility.

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