Energy storage system

Abstract

An energy storage system includes: a rack frame; the rack tray is obliquely arranged in the rack frame, and the battery module is arranged on the rack tray; and a position holder configured to support the battery module such that a position of the battery module is fixed. According to the present disclosure, when an event occurs in a battery module, a position fixer supporting the battery module obliquely seated (obliquely mounted in a rack frame) on a rack tray to fix the position of the battery module may be ruptured by heat or pressure applied by the battery module. Accordingly, heat transfer that causes a fire to spread to adjacent battery modules may be prevented.

Description

Technical Field

[0001] Various aspects of embodiments of this disclosure relate to energy storage systems. Background Technology

[0002] Generally speaking, an energy storage system (ESS) is a device capable of storing surplus electricity or electricity generated from renewable energy sources. An ESS can be constructed by mounting multiple battery modules in racks and housing multiple racks within a container. Battery modules are constructed by assembling multiple secondary batteries electrically connected to each other in various configurations.

[0003] Because of the nature of ESS, which includes multiple battery modules, if a fire occurs in one battery module, the fire may spread to the surrounding area and ignite adjacent battery modules or all adjacent battery modules.

[0004] The above information disclosed in the technology that forms the background of this disclosure is provided to improve the understanding of the background of this disclosure, and therefore may include information that does not constitute related technology. Summary of the Invention

[0005] According to one aspect of the embodiments of the present disclosure, an energy storage system is provided that, in the event of an event occurring in a battery module, prevents or substantially prevents heat transfer to an adjacent battery module.

[0006] The above and other aspects and features of this disclosure will be described in or from the following description of some embodiments of this disclosure.

[0007] According to one or more embodiments of the present invention, an energy storage system includes: a rack frame; a rack tray obliquely mounted in the rack frame, and a battery module disposed on the rack tray; and a position fixer configured to support the battery module such that the position of the battery module is fixed.

[0008] The rack tray may include a plurality of rack trays spaced apart from each other in a first direction, and the plurality of rack trays may be arranged obliquely in a second direction intersecting the first direction.

[0009] The battery module may include a first part and a second part arranged at a lower position than the first part.

[0010] The battery module can be inserted into the rack frame by moving it in the opposite direction to the second direction.

[0011] The position holder may include: a first hook configured to hook and engage with a second part; and a first connector connecting the frame frame and the first hook, and configured to melt and break due to heat applied by the battery module.

[0012] The first connector may include a resiliently deformable material.

[0013] When the first connector breaks, the battery module can move in the second direction and separate from the frame.

[0014] The position holder may further include an elastic portion disposed on the rack tray and configured to elastically support the first hook in a direction opposite to the first direction.

[0015] The elastic portion may include: a plate portion extending from the rack tray; and an elastomer provided on the plate portion and configured to compress and deform upon contact with the first hook member.

[0016] The position fixation device may include: a door rotatably coupled to a rack tray and configured to support a second part; a second hook configured to hook and engage with the door; and a second connector connecting the rack frame and the second hook and configured to melt and break due to heat applied by the battery module.

[0017] The door may have a connecting hole, and the end portion of the second hook is fitted into and connected to the connecting hole.

[0018] The second connector may include a resiliently deformable material.

[0019] When the second connector breaks, the battery module can move in the second direction and separate from the frame.

[0020] The battery module may further include module terminals located at the first portion, and the rack frame may include connectors arranged to face the module terminals, with the module terminals connected to the connectors.

[0021] The connector may protrude from the frame and extend in the second direction, and the module terminal may protrude from the first portion and extend in the opposite direction to the second direction.

[0022] When the battery module moves in the second direction, the connector can be disconnected from the module terminals. Attached Figure Description

[0023] The accompanying drawings included in this specification illustrate some embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. However, this disclosure should not be construed as being limited to the drawings:

[0024] Figure 1 A schematic perspective view illustrating an energy storage system according to an embodiment of the present disclosure;

[0025] Figure 2 For example Figure 1 A schematic side cross-sectional view of an energy storage system;

[0026] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0027] Figure 4 For example, the battery module and Figure 1 A schematic side cross-sectional view of the energy storage system in the state of rack frame separation;

[0028] Figure 5 A schematic side cross-sectional view of an energy storage system according to another embodiment of the present disclosure is shown;

[0029] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0030] Figure 7 For example, the battery module and Figure 5 A schematic side cross-sectional view of the energy storage system in the state of rack frame separation;

[0031] Figure 8 A schematic perspective view illustrating an energy storage system according to another embodiment of the present disclosure;

[0032] Figure 9 For example Figure 8 A schematic front view of an energy storage system;

[0033] Figure 10 For example Figure 8 A schematic side cross-sectional view of an energy storage system;

[0034] Figure 11 for Figure 10 A magnified view of a portion of the image;

[0035] Figure 12 For example, the battery module and Figure 8 A schematic side cross-sectional view of the energy storage system in the state of rack frame separation;

[0036] Figure 13 A schematic side cross-sectional view of an energy storage system according to another embodiment of the present disclosure is shown;

[0037] Figure 14 for Figure 13 A magnified view of a portion of the image; and

[0038] Figure 15 For example, the battery module and Figure 13 A schematic side cross-sectional view of the energy storage system in a separated state from the rack frame. Detailed Implementation

[0039] In this document, some embodiments of the present disclosure will be described in further detail with reference to the accompanying drawings. The terms or words used in this specification and claims are not to be construed as limited to their ordinary or dictionary meanings, and should be interpreted as having meanings and concepts consistent with the technical spirit of the present disclosure, based on the principle that the inventor may, for his / her own lexicographer, appropriately define the concepts of the terms.

[0040] The embodiments described in this specification and the configurations shown in the accompanying drawings are provided as some exemplary embodiments of this disclosure and do not necessarily represent all technical ideas, aspects, and features of this disclosure. Therefore, it should be understood that various equivalents and modifications may exist to replace or modify the embodiments described herein at the time of filing this application.

[0041] It should be understood that when an element or layer is referred to as being "on," "connected to," or "linked to" another element or layer, it may be directly on, connected to, or linked to the other element or layer, or one or more intermediary elements or layers may be present. When an element or layer is referred to as being "directly on," "directly connected to," or "directly linked to" another element or layer, no intermediary element or layer is present. For example, when a first element is described as being "linked" or "connected" to a second element, the first element may be directly linked to or connected to the second element, or the first element may be indirectly linked to or connected to the second element via one or more intermediary elements.

[0042] In the figures, the dimensions of various components, layers, etc., may be enlarged for clarity. The same reference numerals label the same or similar components. As used herein, the term "and / or" includes any and all combinations of one or more of the associated enumerated items. Furthermore, the use of "may" in describing embodiments of this disclosure refers to "one or more embodiments of this disclosure." Expressions such as "at least one of..." and "any one of..." modify the entire list of components when preceding / following the list of components, but do not modify individual components in the list. When phrases such as "at least one of A, B, and C," "at least one of A, B, or C," "at least one selected from the group of A, B, and C," or "selected from at least one of A, B, and C" are used to specify a list of components A, B, and C, the phrase may refer to any and all suitable combinations or subsets of A, B, and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the term "use / using / used" may be considered synonymous with the term "utilize / utilizing / utilized." As used herein, the terms “substantially,” “about,” and similar terms are used as approximations rather than terms of degree and are intended to describe the inherent variations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art.

[0043] It should be understood that although the terms “first,” “second,” and “third,” etc., may be used herein to describe various elements, components, areas, layers, and / or segments, these elements, components, areas, layers, and / or segments should not be limited by these terms. These terms are used to distinguish one element, component, area, layer, or segment from another element, component, area, layer, or segment. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, area, layer, or segment discussed below may be referred to as the second element, component, area, layer, or segment.

[0044] For ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” and “above” are used herein to describe the relationship between one element or feature and another, as illustrated in the figures. It should be understood that spatial relative terms are intended to encompass different orientations of the device in use or operation other than those depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” or “under” other elements or features will be oriented “above” or “above” other elements or features. Thus, the term “below” can encompass both above and below orientations. The device may be oriented in other ways (e.g., rotated 90 degrees or otherwise), and the spatial relative descriptors used herein should be interpreted accordingly.

[0045] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit the disclosure. As used herein, unless the context clearly indicates otherwise, the singular form "a / an" is intended to include the plural form as well. It should be further understood that the term "includes / including / comprises / comprising," when used in this specification, indicates the presence of described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0046] Furthermore, any numerical range disclosed and / or set forth herein is intended to include all subranges with the same numerical precision contained within the set forth range. For example, the range “1.0 to 10.0” is intended to include all subranges between the stated minimum value of 1.0 and the stated maximum value of 10.0 (and inclusive of both), i.e., a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limit set forth herein is intended to include all lower numerical limits contained herein, and any minimum numerical limit set forth in this specification is intended to include all higher numerical limits contained herein. Therefore, the applicant reserves the right to amend this specification (including the claims) to expressly set forth any subranges contained within the range expressly set forth herein.

[0047] Referring to two compared elements, features, etc., as “identical” can mean that they are “identical or substantially identical.” Therefore, the phrase “identical or substantially identical” can include situations where the deviation is considered low in the art, such as a deviation of less than 5%. Additionally, when a parameter is described as uniform in a given region, this can mean that it is uniform in terms of its average value.

[0048] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0049] When any element is said to be arranged (or positioned or placed) "above (or below)" or "on top (or below)" of a component, this may mean that the element is positioned to contact the upper (or lower) surface of the component, and may also mean that another component may be located between the component and any element arranged (or positioned or placed) on (or below) the component.

[0050] Furthermore, it should be understood that when an element is referred to as "connected," "linked," or "attached" to another element, these elements may be directly "connected," "linked," or "attached" to each other, or there may be one or more intermediary elements between them through which the elements may be "connected," "linked," or "attached" to the other element. Additionally, when a part is referred to as "electrically connected" to another part, the part may be directly electrically connected to the other part, or there may be one or more intermediary parts between them, such that the part and the other part are indirectly electrically connected to each other.

[0051] Throughout this specification, unless otherwise stated, when “A and / or B” is used, it means A, B, or A and B. That is, “and / or” includes any or all combinations of the listed items. Unless otherwise indicated, when “C to D” is used, it means C and below D.

[0052] The terminology used in this specification is for describing embodiments of this disclosure and is not intended to limit this disclosure.

[0053] Figure 1 A schematic perspective view of an energy storage system according to an embodiment of the present disclosure is shown. Figure 2 For example Figure 1 A schematic side cross-sectional view of an energy storage system. Figure 3 for Figure 2 A magnified view of a portion of the image. Figure 4 For example, the battery module and Figure 1 A schematic side cross-sectional view of the energy storage system in a separated state from the rack frame.

[0054] refer to Figures 1 to 4 An energy storage system according to an embodiment of the present disclosure may include a rack frame 100, a rack tray 200, and a position fixing part or position fixing device 300.

[0055] The rack frame 100 may have space to accommodate the battery module 10, which will be described below. The rack frame 100 may have the shape of a box or frame with an empty interior.

[0056] The rack frame 100 can be installed indoors in a building and can be installed inside a container, cabinet, etc. The rack frame 100 may include a high-strength material such as steel to prevent or substantially prevent damage due to the load applied by the battery module 10.

[0057] The rack frame 100 may include multiple unit frames 101. Each of the multiple unit frames 101 may be located at a corner of the rack frame 100 and may be arranged in a first direction. The first direction may be... Figure 1 The Z-axis direction, that is, the height direction of the frame 100.

[0058] Multiple unit frames 101 may have extending upward from each corner of the rack frame 100 (see...) Figure 1 ) has a columnar shape.

[0059] According to one embodiment, the rack frame 100 may include a bottom portion 102 and a top portion 103.

[0060] The bottom portion 102 can form the lower outer part of the frame frame 100 (see...) Figure 1 In one embodiment, the bottom portion 102 may have the shape of a quadrilateral plate. The unit frame 101 may be disposed at the corner of the bottom portion 102.

[0061] The unit frame 101 can be integrally fixed to the bottom part 102 by welding or other means, or it can be detachably assembled to the bottom part 102 by bolt connection, assembly or other means.

[0062] The top portion 103 can form the upper outer part of the frame frame 100 (see...) Figure 1 In one embodiment, the top portion 103 may have the shape of a quadrilateral plate. The corners of the top portion 103 may be mounted on the unit frame 101.

[0063] The top part 103 can be integrally fixed to the unit frame 101 by welding or other means, or it can be detachably assembled to the unit frame 101 by bolt connection, assembly or other means.

[0064] The bottom portion 102 and the top portion 103 may be configured to face each other in the height direction of the frame frame 100. The top portion 103 may be configured to be spaced apart from the bottom portion 102 in a first direction.

[0065] In one embodiment, the bottom portion 102 and the top portion 103 may be configured to be parallel to each other. In another embodiment, the areas of the bottom portion 102 and the top portion 103 may be equal to each other.

[0066] However, besides Figure 1 In addition to the cuboid shape shown, the frame frame 100 may have any of a variety of shapes, such as a polyhedral shape and a cylindrical shape.

[0067] The rack frame 100 may include a first surface 100a and a second surface 100b located on a side opposite to the first surface 100a. The first surface 100a and the second surface 100b may be configured to be parallel to each other and opposite to each other. The first surface 100a of the rack frame 100 may be formed to be open, allowing the internal space and external space of the rack frame 100 to communicate with each other.

[0068] Rack tray 200 can be installed inside rack frame 100. Rack tray 200 can divide the internal space of rack frame 100. Rack tray 200 can generally be formed in the shape of a plate.

[0069] In one embodiment, the rack tray 200 may be integrally provided to the rack frame 100. The rack tray 200 may be fixed to the unit frame 101 by welding or the like, or may be detachably assembled to the unit frame 101 by bolting, assembly or the like.

[0070] Multiple rack trays 200 can be provided. The multiple rack trays 200 can be configured inside the rack frame 100 along the height direction of the rack frame 100, i.e., within... Figure 1 The rack trays are spaced apart from each other in the first direction. The rack tray 200 can be disposed between the bottom portion 102 and the top portion 103 of the rack frame 100.

[0071] The number of rack trays 200 and the spacing between adjacent rack trays 200 may vary depending on the height of the battery module 10 as described below. The rack trays 200 may comprise high-strength materials such as steel to prevent or substantially prevent damage due to the load applied by the battery module 10.

[0072] Rack trays 200 can be mounted tiltably in rack frame 100. Multiple rack trays 200 spaced apart from each other in a first direction can be tilted in a second direction.

[0073] The second direction can be relative to Figure 1 The direction is the X-axis direction, that is, the direction in which the frame frame 100 tilts downward at a certain angle (e.g., a set angle) toward the bottom portion 102 of the frame frame 100 in the direction from the second surface 100b toward the first surface 100a. Alternatively, the second direction can be the direction of gravity.

[0074] The battery module 10 can store electricity through charging and discharging operations, or supply the stored electricity to an external electronic device (not shown).

[0075] In one embodiment, the battery module 10 may include a module housing that is generally box-shaped, a plurality of battery cells disposed inside the module housing, and a cooling plate through which cooling water flows to cool the battery cells.

[0076] The battery cell can be a pouch-type secondary battery, a prismatic secondary battery, or a cylindrical secondary battery.

[0077] The battery module 10 can be configured such that its longitudinal direction is parallel to the second direction. When configured to face the first surface 100a outside the rack frame 100, the battery module 10 can be moved in the opposite direction to the second direction to be inserted into the rack frame 100 through the first surface 100a.

[0078] Conversely, in the state of being inserted into the rack frame 100, the battery module 10 can be moved in the second direction to be disassembled to the outside of the rack frame 100 through the first surface 100a.

[0079] The battery module 10 can be mounted on the rack tray 200 inside the rack frame 100. The lower surface of the battery module 10 can contact the upper surface of the rack tray 200.

[0080] Multiple battery modules 10 can be provided. The multiple battery modules 10 can be configured to be located within the rack frame 100. Figure 1 They are spaced apart from each other in the first direction, and each is mounted on a corresponding rack tray 200.

[0081] Multiple battery modules 10 can each be tilted in a second direction on a corresponding rack tray 200, which is installed in the rack frame 100 in a second direction.

[0082] The battery module 10 may include a first portion 11 and a second portion 12 disposed at a level lower than the first portion 11. The first portion 11 may be positioned higher than the second portion 12 relative to the bottom portion 102 of the frame frame 100.

[0083] The first portion 11 of the battery module 10 may be relatively close to the second surface 100b of the frame frame 100 compared to the second portion 12, and may be configured to face the second surface 100b.

[0084] The second portion 12 of the battery module 10 may be relatively closer to the first surface 100a of the frame frame 100 than the first portion 11, and may be positioned facing the first surface 100a.

[0085] The positioning fixing part 300 can support the battery module 10 inside the rack frame 100. The positioning fixing part 300 can fix the position of the battery module 10 by supporting the battery module 10, and the battery module 10 can move in a second direction due to the static load of the battery module 10 which is tilted on the rack tray 200.

[0086] The positioning fixing part 300 can fix the battery module 10 to the rack tray 200 and prevent or substantially prevent the battery module 10 from separating from the rack frame 100 through the first surface 100a of the rack frame 100.

[0087] The positioning fixing part 300 may include a first hook member or a first hook 310 and a first connecting member or a first connector 320.

[0088] The first hook member 310 may contact and hook onto the second portion 12 of the battery module 10. The first hook member 310 may hook onto and connect to the outer surface of the second portion 12 facing a second direction. The first hook member 310 may include a hook having a hook shape.

[0089] The first connecting member 320 can connect the frame frame 100 and the first hook member 310. The first connecting member 320 can be arranged in a direction parallel to the second direction. The first side of the first connecting member 320 can be connected to the second surface 100b of the frame frame 100, and its second side can be connected to the first hook member 310.

[0090] The first connecting member 320 may be disposed across the battery module 10 in the length direction of the battery module 10. The first connecting member 320 may be positioned facing the upper surface of the battery module 10.

[0091] In one embodiment, the first connecting member 320 may include an elastically deformable material. The first connecting member 320 may melt and break due to heat applied by the battery module 10. The first connecting member 320 may also break due to pressure applied by the battery module 10.

[0092] In one embodiment, the first connecting member 320 may have an elongated shape, such as a rope, or may have the shape of a plate with a specific length (e.g., a set length). In one embodiment, the first connecting member 320 may include materials such as rubber, silicone, fiber, plastic, etc.

[0093] When the first connecting member 320 breaks due to heat or pressure applied by the battery module 10, the battery module 10 can move in the second direction to separate from the frame frame 100 together with the first hook member 310.

[0094] When the first connecting member 320 supporting the battery module 10, which is tilted and mounted on the rack tray 200 (which is tilted in the second direction within the rack frame 100), loses its supporting force, the force causing the battery module 10 to move due to its static load can act in the second direction. Therefore, the battery module 10 mounted on the rack tray 200 can separate from the rack frame 100 through the first surface 100a of the rack frame 100. Thus, heat transfer that could lead to the spread of fire to adjacent battery modules 10 can be prevented or substantially prevented.

[0095] Figure 5 A schematic side cross-sectional view of an energy storage system according to another embodiment of the present disclosure is shown. Figure 6 for Figure 5 A magnified view of a portion of the image. Figure 7 For example, the battery module and Figure 5 A schematic side cross-sectional view of the energy storage system in a separated state from the rack frame.

[0096] refer to Figures 5 to 7 An energy storage system according to an embodiment of the present disclosure may include a rack frame 100, a rack tray 200, and a positioning fixing portion 300.

[0097] The position fixing part 300 according to this embodiment may include a first hook member 310, a first connecting member 320 and an elastic part 330.

[0098] In describing the energy storage system according to this embodiment of the present disclosure, the resilient portion 330, which was not described in the energy storage system of the embodiments previously described according to the present disclosure, will be described.

[0099] The description of the energy storage system according to the embodiments previously described in this disclosure can be applied to the remaining components of the energy storage system according to this embodiment of the disclosure without any changes.

[0100] The position fixing portion 300 according to this embodiment may further include an elastic portion 330.

[0101] A resilient portion 330 may be provided on the rack tray 200. The resilient portion 330 may be mounted on the lower portion of the rack tray 200 adjacent to the first surface 100a of the rack frame 100. The resilient portion 330 may resiliently support the first hook member 310 in a direction opposite to the first direction.

[0102] In one embodiment, the elastic portion 330 may include a plate portion 331 and an elastomer 332.

[0103] The plate portion 331 may be provided at the lower portion of the rack tray 200 adjacent to the first surface 100a of the rack frame 100, and may extend horizontally from the rack tray 200 in the direction in which it is positioned on the second surface 100b of the rack frame 100.

[0104] An elastomer 332 may be provided on the plate portion 331. The elastomer 332 may be attached to the lower portion of the plate portion 331. The elastomer 332 may elastically support the first hook member 310. The elastomer 332 may be compressed and deformed by contacting the first hook member 310.

[0105] The elastic body 332 can elastically support the first hook member 310 between the plate portion 331 and the first hook member 310 in a direction opposite to the first direction. In one embodiment, the elastic body 332 may be a helical spring.

[0106] When the battery module 10 is inserted into the frame 100 through the first surface 100a, the elastomer 332 can be compressed and deformed by contacting the first hook member 310. The elastomer 332 can elastically support the first hook member 310 in a direction opposite to the first direction to assist the supporting force of the first connecting member 320.

[0107] When the first connecting member 320 breaks due to the heat or pressure applied by the battery module 10, the battery module 10 can move in the second direction, and the elastomer 332 can provide elastic force to the battery module 10 in the opposite direction to the first direction, thereby facilitating the separation of the battery module 10 from the frame 100.

[0108] Figure 8 A schematic perspective view of an energy storage system according to another embodiment of the present disclosure is shown. Figure 9 For example Figure 8 A schematic front view of an energy storage system. Figure 10 For example Figure 8 A schematic side cross-sectional view of an energy storage system. Figure 11 for Figure 10 A magnified view of a portion of the image. Figure 12 For example, the battery module and Figure 8 A schematic side cross-sectional view of the energy storage system in a separated state from the rack frame.

[0109] refer to Figures 8 to 12 The energy storage system according to this embodiment of the present disclosure may include a rack frame 100, a rack tray 200, and a position fixing portion 300.

[0110] In describing the energy storage system according to this embodiment of the present disclosure, another embodiment of the fixed portion of the energy storage system not described in the embodiments previously described according to the present disclosure will be described.

[0111] The description of the energy storage system according to the embodiments previously described in this disclosure can be applied to the remaining components of the energy storage system according to this embodiment of the disclosure without any changes.

[0112] The positioning fixing part 300 may include a door part or door 340, a second hook member or second hook 350, and a second connecting member or second connector 360.

[0113] The door portion 340 is rotatably connected to the rack tray 200. The door portion 340 may be adjacent to the first surface 100a of the rack frame 100 and may be rotatably connected to the edge of the rack tray 200 facing the first surface 100a via a hinge.

[0114] The door portion 340 can be positioned in a third direction, intersecting with the first and second directions. The third direction can be parallel to... Figure 8 The Y-axis can be the width direction of the battery module 10. The door portion 340 can contact the second portion 12 of the battery module 10 to support the second portion 12.

[0115] The second hook member 350 can hook onto and connect to the door portion 340. In one embodiment, the second hook member 350 may include a hook having a hook shape.

[0116] The door portion 340 may have a connecting hole 341. The connecting hole 341 may be formed to pass through the door portion 340 in the thickness direction. In one embodiment, a plurality of connecting holes 341 may be formed to be spaced apart from each other in the third direction. The end portion of the second hook member 350 may be fitted into and connected to the connecting hole 341.

[0117] The second connecting member 360 can connect the frame frame 100 and the second hook member 350. The second connecting member 360 can be arranged in a direction parallel to the second direction. The first side of the second connecting member 360 can be connected to the second surface 100b of the frame frame 100, and the second side can be connected to the second hook member 350.

[0118] The second connecting member 360 may be disposed across the battery module 10 in the length direction of the battery module 10. The second connecting member 360 may be positioned on the side surface facing the battery module 10.

[0119] In one embodiment, the second connecting member 360 may include an elastically deformable material. The second connecting member 360 may melt and break due to heat applied by the battery module 10. The second connecting member 360 may also break due to pressure applied by the battery module 10.

[0120] In one embodiment, the second connecting member 360 may have an elongated shape, such as a rope, or may have the shape of a plate with a specific length (e.g., a set length). In one embodiment, the second connecting member 360 may include materials such as rubber, silicone, fiber, plastic, etc.

[0121] When the second connecting member 360 breaks due to the heat or pressure applied by the battery module 10, the battery module 10 moves in the second direction, and as the battery module 10 moves, the door portion 340 rotates in the second direction due to being pressed by the battery module 10, so that the battery module 10 can be separated from the frame 100.

[0122] When the second connecting member 360 supporting the battery module 10, which is tilted and mounted on the rack tray 200 (which is tilted in the second direction within the rack frame 100), loses its supporting force, the force causing the battery module 10 to move due to its static load can act in the second direction. Therefore, the battery module 10 mounted on the rack tray 200 can separate from the rack frame 100 through the first surface 100a. Thus, heat transfer that could lead to the spread of fire to adjacent battery modules 10 can be prevented or substantially prevented.

[0123] Figure 13 A schematic side cross-sectional view of an energy storage system according to another embodiment of the present disclosure is shown. Figure 14 for Figure 13 A magnified view of a portion of the image. Figure 15 For example, the battery module and Figure 13 A schematic side cross-sectional view of the energy storage system in a separated state from the rack frame.

[0124] refer to Figures 13 to 15 The energy storage system according to this embodiment of the present disclosure may include a rack frame 100, a rack tray 200, a position fixing portion 300, a module terminal 400, and a connector 500.

[0125] In describing the energy storage system according to this embodiment of the present disclosure, module terminals 400 and connectors 500, which were not described in the energy storage systems of embodiments previously described according to the present disclosure, will be described.

[0126] The description of the energy storage system according to the embodiments previously described in this disclosure can be applied to the remaining components of the energy storage system according to this embodiment of the disclosure without any changes.

[0127] Module terminals 400 may be provided in the battery module 10. Module terminals 400 may be provided at the first portion 11. Through the module terminals 400, the battery module 10 may be electrically connected to another battery module 10 or an external device.

[0128] Module terminals 400 may protrude from the first portion 11 of the battery module 10. Module terminals 400 may extend in a direction opposite to the second direction.

[0129] Connector 500 may be provided on rack frame 100. Connector 500 may be mounted on second surface 100b of rack frame 100. Connector 500 may be positioned facing module terminal 400. Connector 500 may be connected to module terminal 400.

[0130] Connector 500 can be configured to electrically connect to module terminals 400 provided in multiple battery modules 10.

[0131] Connector 500 may protrude from rack frame 100. Connector 500 may protrude from second surface 100b of rack frame 100 and extend in a second direction.

[0132] If the first connecting member 320 breaks due to heat or pressure applied by the battery module 10, and the battery module 10 moves in the second direction, the connector 500 may disconnect from the module terminal 400.

[0133] In one embodiment, the connector 500 and the module terminal 400 extend in a direction parallel to the second direction, and the module terminal 400 can automatically detach from the connector 500 if the battery module 10 is separated from the rack frame 100.

[0134] According to one or more embodiments of this disclosure, if an event occurs to the battery module, the positioning fixing portion of the battery module, which is supported and mounted (e.g., tilted) on a rack tray tilted in a rack frame to fix the position of the battery module, may break due to heat or pressure applied by the battery module.

[0135] Therefore, the fixed parts supporting the battery modules may lose their support, allowing the battery module that has experienced an incident to detach from the frame due to its static load. This prevents, or substantially prevents, heat transfer that could lead to the spread of fire to adjacent battery modules.

[0136] However, the effects that can be obtained through this disclosure are not limited to the above aspects and effects, and those skilled in the art will clearly understand from the following description of this disclosure other technical aspects and effects not mentioned.

[0137] Although this disclosure has been described with reference to some exemplary embodiments shown in the accompanying drawings, these embodiments are merely illustrative, and it should be understood that those skilled in the art can derive various modifications and equivalent other embodiments based on the embodiments.

Claims

1. An energy storage system comprising: Rack frame; A rack tray is mounted at an angle within the rack frame, and the battery module is mounted on the rack tray; as well as A position fixer is configured to support the battery module so that the position of the battery module is fixed.

2. The energy storage system of claim 1, wherein the rack trays comprise a plurality of rack trays spaced apart from each other in a first direction, and The plurality of rack trays are arranged at an angle in a second direction intersecting the first direction.

3. The energy storage system according to claim 2, wherein the battery module comprises: Part One; as well as The second part is arranged to be lower than the first part.

4. The energy storage system according to claim 3, wherein the battery module can be inserted into the frame while moving in a direction opposite to the second direction.

5. The energy storage system according to claim 3, wherein the location fixer comprises: The first hook is configured to hook and connect to the second part; as well as The first connector connects the frame and the first hook and is configured to melt and crack due to the heat applied by the battery module.

6. The energy storage system of claim 5, wherein the first connector comprises an elastically deformable material.

7. The energy storage system according to claim 5, wherein, When the first connector breaks, the battery module moves in the second direction and separates from the frame.

8. The energy storage system of claim 5, wherein the position fixer further comprises an elastic portion disposed on the rack tray and configured to elastically support the first hook in a direction opposite to the first direction.

9. The energy storage system according to claim 8, wherein the resilient portion comprises: The plate portion is configured to extend from the rack tray; as well as An elastomer is provided on the plate portion and configured to compress and deform by contact with the first hook.

10. The energy storage system according to claim 3, wherein the location fixer comprises: A door, rotatably connected to the rack tray and configured to support the second part; The second hook is configured to hook and connect to the door; as well as The second connector connects the frame and the second hook and is configured to melt and crack due to the heat applied by the battery module.

11. The energy storage system of claim 10, wherein the door has a connection hole, and the end portion of the second hook is fitted into and connected to the connection hole.

12. The energy storage system of claim 10, wherein the second connector comprises the elastically deformable material.

13. The energy storage system according to claim 10, wherein, When the second connecting member breaks, the battery module moves in the second direction and separates from the frame.

14. The energy storage system according to claim 3 or 5, wherein the battery module further includes module terminals located at the first portion, and The rack frame includes a connector arranged to face the module terminals, and the module terminals are connected to the connector.

15. The energy storage system of claim 14, wherein the connector protrudes from the rack frame and extends in the second direction, and The module terminal protrudes from the first portion and extends in a direction opposite to the second direction.

16. The energy storage system of claim 15, wherein the connector disconnects from the module terminals when the battery module moves in the second direction.

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