Battery module

Abstract

To provide a battery module which has a higher extinction efficiency and can be easily set and replaced.SOLUTION: The battery module of the present disclosure includes: a housing; a first battery cell in the housing; a second battery cell in the housing, the second battery cell being separate from the first battery cell; an extinction member between the first battery cell and the second battery cell, the extinction member ejecting an extinction material to the first battery cell and to the second battery cell; and a supporting member in the housing, the supporting member supporting the extinction member.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a battery module.

Background Art

[0002] This application claims the priority and benefit of Korean Patent Application No. 10-2024-0008597, filed with the Korean Intellectual Property Office on January 19, 2024, the entire contents of which are incorporated herein by reference.

[0003] Generally, as the demand for portable electronic products such as notebook computers, video cameras, and mobile phones has increased rapidly, and as the commercialization of robots, electric vehicles, etc. has become full-fledged, research on high-performance secondary batteries capable of repeated charging and discharging has been actively underway.

[0004] Secondary batteries are widely used not only for small devices such as portable electronic devices but also for medium- and large-sized devices such as electric vehicles and energy storage systems (ESS) for driving and energy storage. In particular, in the case of medium- and large-sized devices, in order to improve the output and capacity of the battery, a battery module is configured in a form in which a number of battery cells are electrically connected to each other.

[0005] In a battery module, a fire extinguishing pipe capable of injecting a fire extinguishing substance in the event of a fire is installed for fire suppression. However, such a fire extinguishing pipe is arranged outside the module housing, resulting in reduced fire extinguishing efficiency, and there is a risk of clogging, damage, etc. caused by flames, gases, foreign substances, etc. discharged from the vent of the battery cell.

[0006] The above-described information disclosed in the technology that is the background of such an invention is only for improving the understanding of the background of the present invention, and thus may include information that does not constitute the prior art.

Summary of the Invention

Problems to be Solved by the Invention

[0007] The object of the present invention is to provide a battery module with improved fire extinguishing efficiency and easy installation and replacement.

[0008] However, the technical problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the description of the invention described below.

Means for Solving the Problems

[0009] The battery module according to the present invention includes a housing, a first battery cell disposed inside the housing, a second battery cell disposed inside the housing and separated from the first battery cell, and a fire extinguishing member disposed between the first battery cell and the second battery cell for injecting a fire extinguishing substance into the first battery cell and the second battery cell, and a support member disposed inside the housing for supporting the fire extinguishing member.

[0010] The fire extinguishing member can include a fire extinguishing tube having a first end and a second end, an end cap connected to the first end for sealing the fire extinguishing tube, and a supply port connected to the second end for supplying a fire extinguishing substance to the fire extinguishing tube.

[0011] The fire extinguishing tube can be melted by being heated to a temperature equal to or higher than a set temperature.

[0012] The fire extinguishing tube can be provided to be elastically deformable.

[0013] The end cap can include a cap head disposed to face the first end, a cap body extending from the cap head and inserted into the inside of the first end, and a cap rib extending from the cap body and adhered to the inner surface of the first end.

[0014] The supply port can include a fixed bracket arranged to face the second end and coupled to the housing, a first port body extending from the fixed bracket, inserted into the interior of the second end, and communicating with the interior space of the second end, a port rib extending from the first port body and adhering to the inner surface of the second end, and a second port body extending from the fixed bracket, protruding outside the housing, and communicating with the first port body.

[0015] The support member can include a holder body arranged between the first battery cell and the second battery cell, a guide rail formed through the holder body into which a fire extinguishing member is inserted, and a sleeve coupled to the holder body and arranged to surround the fire extinguishing tube.

[0016] The holder body includes a first surface arranged to face the first battery cell and a second surface arranged to face the second battery cell. The sleeve can include a first sleeve coupled to the first surface and arranged to surround one side of the fire extinguishing tube, and a second sleeve coupled to the second surface and arranged to surround the other side of the fire extinguishing tube.

[0017] A plurality of the first sleeves and the second sleeves are provided, and the plurality of the first sleeves and the second sleeves can be arranged in a row along the longitudinal direction of the guide rail.

[0018] The first sleeves and the second sleeves can be alternately arranged along the longitudinal direction of the guide rail.

[0019] The first sleeve can include a first support ring arranged between the first battery cell and the first surface, and a first pressing member protruding from the first support ring toward the fire extinguishing tube. The second sleeve can include a second support ring arranged between the second battery cell and the second surface, and a second pressing member protruding from the second support ring toward the fire extinguishing tube.

[0020] The first pressing member can include a plurality of first pressing protrusions arranged along the circumferential direction of the first support ring.

[0021] The first pressing member can include a first pressing ring extending along the circumferential direction of the first support ring.

[0022] The support member can be spaced apart from the holder body and further include an end sleeve that supports the end cap.

[0023] The end sleeve can include a sleeve body extending from the housing toward the holder body with an end cap inserted therein, and a placement portion disposed inside the sleeve body and in contact with an end of the end cap.

[0024] The placement portion can include an inclined surface disposed to be inclined with respect to the extension direction of the sleeve body.

[0025] The end cap can include a cap head disposed to face the first end, a cap body extending from the cap head and inserted into the first end, and a cap rib extending from the cap body and adhered to the inner surface of the first end. The end sleeve can include a sleeve body extending from the housing toward the holder body with an end cap inserted therein, and a locking portion protruding from the inner surface of the sleeve body and in contact with the end cap.

[0026] The locking portion can be inserted between the cap rib and the cap head.

[0027] It can further include a channel disposed inside the housing for guiding the flow of the fire extinguishing substance ejected from the fire extinguishing member.

[0028] The channel can include a first channel disposed between the bottom surface of the housing and the first battery cell, and a second channel disposed between the bottom surface of the housing and the second battery cell.

Advantages of the Invention

[0029] According to the present invention, the fire extinguishing member can improve the fire extinguishing efficiency by directly injecting the fire extinguishing substance into the first battery cell and the second battery cell inside the housing.

[0030] According to the present invention, since the fire extinguishing member is detachably installed on the support member, only the fire extinguishing member can be replaced when the fire extinguishing member malfunctions or is damaged, so that the cost generated by discarding the entire module can be saved.

[0031] According to the present invention, the first pressing member and the second pressing member are alternately arranged along the longitudinal direction of the guide rail, so as to ensure the supporting force for the fire extinguishing member and enable the fire extinguishing member to move smoothly through the guide rail.

[0032] According to the present invention, the end sleeve can prevent the phenomenon that the end of the fire extinguishing member droops due to its own weight and can further strengthen the supporting force for the fire extinguishing member.

[0033] According to the present invention, when a fire occurs in either one of the first battery cell or the second battery cell, the channel can prevent the fire from spreading to the adjacent first battery cell or the second battery cell.

[0034] However, the effects that can be obtained through the present invention are not limited to the above-mentioned effects, and other technical effects not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

Brief Description of the Drawings

[0035] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention to be described later, serve to further understand the technical idea of the present invention. Therefore, the present invention should not be construed as being limited only to the matters described in such drawings.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

BEST MODE FOR CARRYING OUT THE INVENTION

[0036] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. Prior to this, the terms and words used in this specification and the claims should not be construed in a limited sense according to their ordinary or dictionary meanings. The inventor should interpret them in a meaning and concept consistent with the technical idea of the present invention in accordance with the principle that he can appropriately define the concept of the terms in order to explain his own invention in the best way. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only some of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. It should be understood that there may be various equivalents and modifications that can replace them at the time of this application. Also, when used in this specification, "comprise", "include" and / or "comprising", "including" are used to specify the presence of the recited shape, number, step, operation, member, element and / or group thereof, and do not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements and / or groups. Also, when describing embodiments of the present invention, "can be" and "can be" can include "one or more embodiments of the present invention".

[0037] Also, for the purpose of assisting in the understanding of the invention, the attached drawings are not shown at actual scale, and the dimensions of some components may be exaggerated. Also, the same reference numerals may be assigned to the same components in different embodiments.

[0038] A reference that two comparison targets are "identical" means "substantially identical". Therefore, substantial identity can include cases having a deviation regarded as a low level in the art, for example, a deviation within 5%. Also, the fact that a certain parameter is uniform in a given region may mean that it is uniform from an average point of view.

[0039] For example, the first, second, etc. are used to describe various components, but it goes without saying that these components are not limited by these terms. These terms are merely used to distinguish one component from another, and it goes without saying that, unless otherwise stated, the first component may be the second component.

[0040] Throughout the specification, unless otherwise stated, each component may be in the singular or plural.

[0041] When any configuration is arranged "above (or below)" a component or "on (or under)" a component, it means not only that any configuration is arranged in contact with the upper surface (or lower surface) of the component, but also that other configurations may be interposed between the component and any configuration arranged on (or under) the component.

[0042] Also, when a component is described as being "connected", "coupled" or "joined" to another component, the components may be directly connected or joined to each other, but it should be understood that other components may be "interposed" between the components, or each component may be "connected", "coupled" or "joined" through another component. Also, when a part is said to be electrically coupled to another part, this includes not only the case where they are directly connected, but also the case where other elements are sandwiched in between.

[0043] Throughout the specification, when "A and / or B" is used, it means A only, B only, or A and B, unless otherwise stated. That is, "and / or" includes all combinations or any combination of the listed multiple items. When "C to D" is used, it means C or more and D or less, unless otherwise stated.

[0044] When syntax 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", and "at least one selected from among A, B, and C" is used to specify a list of elements A, B, and C, the syntax may refer to any and all suitable combinations.

[0045] The term "use" may be regarded as synonymous with the term "utilize". As used herein, the terms "substantially", "about", and similar terms are used as terms of approximation, not of degree, to account for the inherent variations in measured or calculated values that would be recognized by one of ordinary skill in the art.

[0046] In this specification, terms such as first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or sections, but these elements, components, regions, layers, and / or sections should not be limited by these terms. This terminology is used to distinguish one element, component, region, drawing layer, or cross-section from another. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0047] As shown in the drawings, for the purpose of explaining the relationship between one element or feature and other element(s) or feature(s), or for ease of explanation, spatial relative terms such as "beneath", "below", "lower", "above", "upper", etc. may be used in this specification. The spatially relative positions are understood to be for the purpose of encompassing different directions of the device during use or operation in addition to the directions depicted in the figures. For example, if the device in the drawings is turned over, an element described as "below" or "beneath" another element will be understood to be "above" or "upper" of the other element. Therefore, the term "below" can encompass all directions of up and down.

[0048] The terms used in this specification are for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0049] FIG. 1 is an exploded perspective view schematically showing the configuration of a battery module according to a first embodiment of the present invention, FIG. 2 is a cross-sectional perspective view schematically showing the configuration of the battery module according to the first embodiment of the present invention, and FIG. 3 is a plan cross-sectional view schematically showing the configuration of the battery module according to the first embodiment of the present invention.

[0050] Referring to FIGS. 1 to 3, the battery module according to the present embodiment includes a housing 100, a first battery cell 200, a second battery cell 300, a fire extinguishing member 400, and a support member 500.

[0051] The housing 100 can perform a function of accommodating the first battery cell 200 and the second battery cell 300 described later inside and protecting the first battery cell 200 and the second battery cell 300 from external foreign matters and impacts.

[0052] The housing 100 can include a bottom plate 110, a top plate 120, a side plate 130, and an end plate 140.

[0053] The bottom plate 110 and the top plate 120 can respectively form the lower and upper appearances of the housing 100. A cooling plate (not shown) through which cooling water for cooling the first battery cell 200 and the second battery cell 300 circulates can be additionally installed on the bottom plate 110. A bus bar (not shown) electrically connected to the first battery cell 200 and the second battery cell 300 can be additionally installed on the top plate 120. The specific shapes of the bottom plate 110 and the top plate 120 are not limited to the shapes shown in FIGS. 1 to 3, and various design changes can be made according to the size, form, etc. of the housing 100.

[0054] The side plates 130 can be formed in a pair. The pair of side plates 130 can respectively form the appearances on both sides of the housing 100. The lower and upper ends of the side plates 130 can be respectively coupled to the bottom plate 110 and the top plate 120 by welding, bolting, etc. The specific shape of the side plates 130 is not limited to the shape shown in FIGS. 1 to 3, and various design changes can be made according to the size, form, etc. of the housing 100.

[0055] The end plates 140 can be formed in a pair. The pair of end plates 140 respectively form the front and rear appearances of the housing 100. The lower and upper ends of the end plates 140 can be respectively coupled to the bottom plate 110 and the top plate 120 by welding, bolting, etc. The left and right ends of the end plates 140 can be respectively coupled to the pair of side plates 130 by welding, bolting, etc. The specific shape of the end plates 140 is not limited to the shape shown in FIGS. 1 to 3, and various design changes can be made according to the size, form, etc. of the housing 100.

[0056] The longitudinal direction of the housing 100 described below may mean the direction parallel to the X-axis, that is, the direction vertically penetrating the pair of end plates 140, with reference to FIGS. 1 to 3. Further, the width direction of the housing 100 may mean the direction parallel to the Y-axis, that is, the direction vertically penetrating the pair of side plates 130, with reference to FIGS. 1 to 3.

[0057] The first battery cell 200 and the second battery cell 300 function as unit structures for storing and supplying electric power in a battery module.

[0058] The first battery cell 200 and the second battery cell 300 may be exemplified as rectangular secondary batteries in which electrode assemblies (not shown) including a positive electrode plate (not shown) and a negative electrode plate (not shown) are disposed inside a case (not shown) on both sides of a separator (not shown) and can charge and discharge a preset amount of electric power. The electrode assembly may be formed in a wound type in which the separator, the positive electrode plate, and the negative electrode plate are wound in a roll shape, or may be formed in a stacked type in which the separator, the positive electrode plate, and the negative electrode plate are stacked on each other.

[0059] A plurality of the first battery cells 200 and the second battery cells 300 may be provided. The plurality of first battery cells 200 may be arranged along the longitudinal direction of the housing 100, that is, the direction parallel to the X-axis direction with reference to FIGS. 1 to 3. The plurality of second battery cells 300 may be arranged along the longitudinal direction of the housing 100. The number of the first battery cells 200 and the second battery cells 300 may be the same.

[0060] The first battery cell 200 and the second battery cell 300 may be arranged to be spaced apart at a predetermined interval in the width direction of the housing 100, that is, the direction parallel to the Y-axis direction with reference to FIGS. 1 to 3. Accordingly, a space may be secured between the first battery cell 200 and the second battery cell 300 in which a fire extinguishing member 400 and a support member 500 described later can be installed.

[0061] The lower surfaces of the first battery cell 200 and the second battery cell 300 may be arranged to be spaced apart from the upper surface of the bottom plate 110 at a predetermined interval. In this case, the first battery cell 200 and the second battery cell 300 can be placed on a support means (not shown) extending from the side plate 130 or the like to maintain a state of being separated from the upper surface of the bottom plate 110.

[0062] The fire extinguishing member 400 can inject a fire extinguishing substance into the first battery cell 200 and the second battery cell 300 in conjunction with a temperature rise of the first battery cell 200 or the second battery cell 300. That is, the fire extinguishing member 400 can function as a configuration for suppressing a fire generated from either one of the first battery cell 200 or the second battery cell 300. Here, examples of the fire extinguishing substance can include various substances having a fire extinguishing function, such as novec1230, water, halon 1211, halon 1301, Loaded Stream agent, soda - acid, and the like.

[0063] The fire extinguishing member 400 can be arranged between the first battery cell 200 and the second battery cell 300. Accordingly, the fire extinguishing member 400 can prevent malfunction due to flames and foreign matters discharged from the vents of the first battery cell 200 and the second battery cell 300.

[0064] The fire extinguishing member 400 can penetrate through one of the end plates 140 and be inserted into the housing 100 from the outside of the housing 100 or be detached from the inside of the housing 100 to the outside of the housing 100. Accordingly, when the fire extinguishing substance is injected or damaged, the fire extinguishing member 400 can be easily replaced from the housing 100.

[0065] FIG. 4 is a perspective view schematically showing the configuration of a fire extinguishing member according to a first embodiment of the present invention.

[0066] Referring to FIG. 4, the fire extinguishing member 400 can include a fire extinguishing tube 410, an end cap 420, and a supply port 430.

[0067] The fire extinguishing tube 410 can be formed in the shape of a hollow can with an empty interior. The fire extinguishing tube 410 can be disposed between the first battery cell 200 and the second battery cell 300. The longitudinal direction of the fire extinguishing tube 410 can be arranged parallel to the longitudinal direction of the housing 100. A part of the entire circumferential surface of the fire extinguishing tube 410 can be arranged to face the side surface of the first battery cell 200, and the remaining part of the entire circumferential surface of the fire extinguishing tube 410 can be arranged to face the side surface of the second battery cell 300. The fire extinguishing tube 410 can be fixed in position between the first battery cell 200 and the second battery cell 300 by a support member 500 described later.

[0068] The interior of the fire extinguishing tube 410 can be filled with a fire extinguishing substance supplied from a supply port 430 described later. The fire extinguishing tube 410 can be melted by being heated to a set temperature or higher. Accordingly, when the temperature of the first battery cell 200 and the second battery cell 300 rises or a flame occurs, the fire extinguishing tube 410 can melt and eject the fire extinguishing substance filled therein to the outside. The fire extinguishing tube 410 can be provided to be elastically deformable. For example, the fire extinguishing tube 410 can be formed of a synthetic resin material such as polypropylene, polyethylene, nylon, PVC, etc. Here, the set temperature can be various values within the range of about 80°C to 300°C, and the design can be changed.

[0069] The fire extinguishing tube 410 can include a first end 411 and a second end 412.

[0070] The first end portion 411 and the second end portion 412 can respectively form the appearances of both ends of the fire extinguishing tube 410. The first end portion 411 and the second end portion 412 can be spaced apart from each other along the longitudinal direction of the fire extinguishing tube 410. When the fire extinguishing tube 410 is completely inserted into the housing 100, the first end portion 411 and the second end portion 412 can be respectively arranged so as to face a pair of end plates 140. The sides of the first end portion 411 and the second end portion 412 facing the end plate 140 can be formed to be open.

[0071] The end cap 420 is connected to the first end portion 411 and seals the fire extinguishing tube 410. That is, the end cap 420 can function as a configuration for preventing the fire extinguishing substance from leaking out of the fire extinguishing tube during the normal operation of the first battery cell 200 and the second battery cell 300.

[0072] FIG. 5 is an enlarged view schematically showing the configuration of the end cap according to the first embodiment of the present invention.

[0073] Referring to FIG. 5, the end cap 420 can include a cap head 421, a cap body 422, and a cap rib 423.

[0074] The cap head 421 can be arranged to face the open side of the first end portion 411. The inner surface of the cap head 421 can be in close contact with the open surface of the first end portion 411. The cross-sectional area of the cap head 421 can be formed larger than the cross-sectional area of the first end portion 411. Accordingly, the cap head 421 can block the fire extinguishing substance from leaking to the outside of the fire extinguishing tube 410 through the open side of the first end portion 411. The specific shape of the cap head 421 is not limited to the shape shown in FIG. 5, and various design changes are possible within the technical idea of a shape that can seal the open side of the first end portion 411.

[0075] The cap body 422 extends from the cap head 421 and can be inserted into the inside of the first end portion 411. The cap body 422 can have a cylindrical form extending along a direction parallel to the longitudinal direction of the fire extinguishing tube 410 from the inner surface of the cap head 421. The cross-sectional area of the cap body 422 can be formed smaller than the cross-sectional area of the first end portion 411. The cap body 422 can be inserted into the inside of the first end portion 411 through the opening of the first end portion 411 when the cap head 421 comes into contact with the opened surface of the first end portion 411.

[0076] The cap rib 423 extends from the cap body 422 and can be adhered to the inner surface of the first end portion 411. That is, the cap rib 423 can function as a configuration that prevents the cap body 422 from detaching from the first end portion 411 by the adhesion force with the first end portion 411. Along with this, the cap rib 423 can cause the cap head 421 to firmly maintain the adhesion force with the first end portion 411.

[0077] The cap rib 423 can protrude in the radial direction of the cap body 422 from the outer peripheral surface of the cap body 422. The cap rib 423 can extend continuously along the circumferential direction of the cap body 422 and can be formed in a substantially circular ring form. When the cap body 422 is inserted into the inside of the first end portion 411, the cap rib 423 can press the inner surface of the first end portion 411 in the radial direction of the fire extinguishing tube 410. Due to such a pressing force, the cap rib 423 can elastically deform a partial region of the first end portion 411 in the radial direction of the fire extinguishing tube 410 and can be adhered to and engaged with the inner surface of the first end portion 411. The cap rib 423 can be formed to be narrower toward the end portion. Along with this, the cap rib 423 can further increase the magnitude of the pressing force acting between the cap rib 423 and the inner surface of the first end portion 411.

[0078] The cap ribs 423 can be provided in a plurality. The plurality of cap ribs 423 can be arranged at set intervals along the longitudinal direction of the cap body 422. The number, interval, etc. of the cap ribs 423 can be variously designed and changed according to the length, cross-sectional area, etc. of the cap body 422.

[0079] The supply port 430 is connected to the second end portion 412 and supplies a fire extinguishing substance to the fire extinguishing tube 410. That is, the supply port 430 can function as a configuration that transmits the flow of the fire extinguishing substance supplied from the outside of the housing 100 to the inside of the fire extinguishing tube 410.

[0080] FIG. 6 is an enlarged view schematically showing the installation state of the supply port according to the first embodiment of the present invention, and FIG. 7 is an enlarged view schematically showing the configuration of the supply port according to the first embodiment of the present invention.

[0081] Referring to FIGS. 6 and 7, the supply port 430 can include a fixing bracket 431, a first port body 432, port ribs 433, and a second port body 434.

[0082] The fixing bracket 431 is formed to have a substantially flat plate shape and can be arranged to face the opened side of the second end portion 412. The fixing bracket 431 can be adhered to the opened surface of the second end portion 412. The fixing bracket 431 is arranged outside the housing 100 and can be coupled to the outer surface of the housing 100, that is, the end plate 140 through which the fire extinguishing tube 410 is inserted and penetrated. In this case, the fixing bracket 431 can be detachably coupled to the end plate 140 by bolting, fitting, or the like.

[0083] The first port body 432 may extend from the inner surface of the fixed bracket 431 facing the end plate 140. The first port body 432 may be formed to have the shape of a can with an empty interior and openings on both sides. The longitudinal direction of the first port body 432 may be arranged parallel to the longitudinal direction of the fire hose 410. The first port body 432 may be inserted into the interior of the second end 412 by the fixed bracket 431 contacting the open surface of the second end 412. One end of the first port body 432 may penetrate the fixed bracket 431 and communicate with a second port body 434 described later. The other end of the first port body 432 may communicate with the internal space of the second end 412.

[0084] The port rib 433 may extend from the first port body 432 and be in close contact with the inner surface of the second end 412. That is, the port rib 433 can function as a configuration to prevent the first port body 432 from detaching from the second end 412 by the adhesion force with the second end 412.

[0085] The port rib 433 may protrude radially from the outer peripheral surface of the first port body 432 in the radial direction of the first port body 432. The port rib 433 may extend continuously along the circumferential direction of the first port body 432 and be formed in a substantially circular ring shape. When the first port body 432 is inserted into the interior of the second end 412, the port rib 433 can press the inner surface of the second end 412 in the radial direction of the fire hose 410. Due to such a pressing force, the port rib 433 can elastically deform a partial region of the second end 412 in the radial direction of the fire hose 410 and be in close contact with and engaged with the inner surface of the second end 412. The port rib 433 may be formed to become narrower toward the end. Accordingly, the port rib 433 can further increase the magnitude of the pressing force acting between it and the inner surface of the second end 412.

[0086] A plurality of port ribs 433 can be provided. The plurality of port ribs 433 can be arranged at set intervals along the longitudinal direction of the first port body 432. The number, interval, etc. of the port ribs 433 can be variously designed and changed according to the length, cross-sectional area, etc. of the first port body 432.

[0087] The second port body 434 can extend from the outer surface of the fixed bracket 431 arranged so as to face the external space of the housing 100. The second port body 434 can be formed to have a shape of a can with an empty interior and both sides opened. The longitudinal direction of the second port body 434 can be arranged side by side with the longitudinal direction of the first port body 432. One end of the second port body 434 can protrude outside the housing 100. One end of the second port body 434 can receive the supply of a fire extinguishing substance supplied from outside the housing 100 through a pipe, a hose, etc. The other end of the second port body 434 can penetrate the fixed bracket 431 and communicate with the first port body 432. Accordingly, the fire extinguishing substance supplied from outside the housing 100 can be sequentially transmitted through the second port body 434 and the first port body 432 and into the interior of the fire extinguishing tube 410.

[0088] The support member 500 is arranged inside the housing 100 and supports the fire extinguishing member 400. More specifically, the support member 500 can function as a configuration that positions the fire extinguishing member 400 in a fixed position inside the housing 100, guides the operation of inserting the fire extinguishing member 400 into the housing 100, and detaching it from the housing 100.

[0089] FIG. 8 is a perspective view schematically showing the configuration of the support member according to the first embodiment of the present invention, FIG. 9 is a perspective view showing the configuration of the support member according to the first embodiment of the present invention from a different perspective from FIG. 8, and FIG. 10 is a cross-sectional view schematically showing the configuration of the support member according to the first embodiment of the present invention.

[0090] Referring to FIGS. 8 to 10, the support member 500 can include a holder body 510, a guide rail 520, and a sleeve 530.

[0091] The holder body 510 is disposed between the first battery cell 200 and the second battery cell 300 and can support the guide rail 520 and the sleeve 530 described later as a whole. The upper end portion of the holder body 510 can be coupled to the top plate 120. The lower end portion of the holder body 510 can be disposed at a predetermined interval from the bottom plate 110. The longitudinal direction of the holder body 510 can be arranged parallel to the longitudinal direction of the housing 100. Both longitudinal ends of the holder body 510 can be spaced apart from the inner surfaces of a pair of end plates 140 at a predetermined interval, respectively.

[0092] On both sides of the holder body 510, a first surface 511 facing the first battery cell 200 and a second surface 512 facing the second battery cell 300 can be formed, respectively. The first surface 511 and the second surface 512 can be arranged to face each other parallel to the side surfaces of the first battery cell 200 and the second battery cell 300.

[0093] The guide rail 520 is formed to penetrate through the holder body 510 and can function as a structure that provides a path for the fire extinguishing member 400 to be inserted into or removed from the inside of the housing 100. The guide rail 520 can be formed in the form of a hole that vertically penetrates the first surface 511 and the second surface 512 of the holder body 510. The longitudinal direction of the guide rail 520 can be arranged parallel to the longitudinal direction of the housing 100. Both ends in the longitudinal direction of the guide rail 520 can penetrate both ends in the longitudinal direction of the holder body 510, respectively. The height of the guide rail 520 can be formed to be larger than the diameter of the cap head 421. Accordingly, the fire extinguishing member 400 can penetrate through the end plate 140 and be inserted into the inside of the guide rail 520. When the fire extinguishing member 400 is completely inserted into the guide rail 520, the end cap 420 can protrude outside the guide rail 520 through the end of the guide rail 520.

[0094] The sleeve 530 can be connected to the holder body 510 and arranged to surround the fire extinguishing tube 410. That is, the sleeve 530 can function as a structure that guides the movement of the fire extinguishing member 400 through the guide rail 520 and aligns the relative position of the fire extinguishing member 400 with respect to the guide rail 520.

[0095] FIG. 11 is a drawing schematically showing the configuration of the sleeve according to the first embodiment of the present invention.

[0096] Referring to FIGS. 8 to 11, the sleeve 530 can include a first sleeve 531 and a second sleeve 532.

[0097] The first sleeve 531 can be connected to the first surface 511 of the holder body 510 and arranged to surround one side of the fire extinguishing tube 410. A plurality of first sleeves 531 can be provided. The plurality of first sleeves 531 can be arranged at set intervals along the longitudinal direction of the guide rail 520.

[0098] FIG. 12 is a drawing schematically showing the configuration of the first sleeve according to the first embodiment of the present invention.

[0099] Referring to FIGS. 8 to 12, the first sleeve 531 can include a first support ring 531a and a first pressing member 531b.

[0100] The first support ring 531a forms a schematic outer appearance of the first sleeve 531 and can be disposed between the first battery cell 200 and the first surface 511. The first support ring 531a can be formed to have a semi-circular ring shape. Both ends of the first support ring 531a can be fixed to the first surface 511 of the holder body 510. Both ends of the first support ring 531a can be vertically spaced apart with the guide rail 520 therebetween. The central axis of the first support ring 531a can be arranged to be coaxial with the central axis of the fire extinguishing tube 410. The inner surface of the first support ring 531a can be arranged to face the circumferential surface of one side of the fire extinguishing tube 410 facing the side surface of the first battery cell 200. The radius of the first support ring 531a can be larger than the radius of the fire extinguishing tube 410 or can be formed to correspond to the radius of the fire extinguishing tube 410.

[0101] The first pressing member 531b protrudes from the first support ring 531a toward the fire extinguishing tube 410 and can press the circumferential surface of one side of the fire extinguishing tube 410 facing the side surface of the first battery cell 200. The fire extinguishing tube 410 can be elastically deformed by the pressing force applied from the first pressing member 531b and can be strongly adhered to the first pressing member 531b.

[0102] The first pressing member 531b can include a plurality of first pressing protrusions 531c.

[0103] The first pressing projection 531c can protrude from the inner surface of the first support ring 531a toward the central axis of the first support ring 531a and the fire extinguishing tube 410. The first pressing projection 531c can be formed such that its width gradually narrows toward the end. Accordingly, the first pressing projection 531c can increase the magnitude of the pressing force applied to the fire extinguishing tube 410. The first pressing projection 531c can be formed to have a substantially hemispherical shape.

[0104] A plurality of the first pressing projections 531c can be arranged at set intervals along the circumferential direction of the first support ring 531a. In this case, the interval between a pair of adjacent first pressing projections 531c can be 45° or 90°.

[0105] The second sleeve 532 can be connected to the second surface 512 of the holder body 510 and arranged to surround the other side of the fire extinguishing tube 410. That is, the second sleeve 532 can be arranged to surround the remaining circumferential surface of the fire extinguishing tube 410 not surrounded by the first sleeve 531. A plurality of the second sleeves 532 can be provided. The plurality of second sleeves 532 can be arranged at set intervals along the longitudinal direction of the guide rail 520.

[0106] The second sleeve 532 can include a second support ring 532a and a second pressing member 532b.

[0107] The second support ring 532a forms a schematic outer appearance of the second sleeve 532 and can be disposed between the second battery cell 300 and the second surface 512. The second support ring 532a can be formed to have a semi-circular ring shape. Both ends of the second support ring 532a can be fixed to the second surface 512 of the holder body 510. Both ends of the second support ring 532a can be vertically spaced apart with the guide rail 520 interposed therebetween. The central axis of the second support ring 532a can be disposed to be coaxial with the central axis of the fire extinguishing tube 410. The inner surface of the second support ring 532a can be disposed to face the circumferential surface on the other side of the fire extinguishing tube 410 that faces the side surface of the second battery cell 300. The radius of the second support ring 532a can be larger than the radius of the fire extinguishing tube 410 or can be formed to correspond to the radius of the fire extinguishing tube 410.

[0108] The second pressing member 532b protrudes from the second support ring 532a toward the fire extinguishing tube 410 and can press the circumferential surface on the other side of the fire extinguishing tube 410 that faces the side surface of the second battery cell 300. The fire extinguishing tube 410 can be elastically deformed by the pressing force applied from the second pressing member 532b and can be in strong contact with the second pressing member 532b.

[0109] The second pressing member 532b can include a plurality of second pressing protrusions 532c.

[0110] The second pressing protrusion 532c can protrude from the inner surface of the second support ring 532a toward the central axes of the second support ring 532a and the fire extinguishing tube 410. The second pressing protrusion 532c can be formed such that the width gradually narrows toward the end. Accordingly, the second pressing protrusion 532c can increase the magnitude of the pressing force applied to the fire extinguishing tube 410. The second pressing protrusion 532c can be formed to have a substantially hemispherical shape.

[0111] A plurality of second pressing protrusions 532c can be arranged at set intervals along the circumferential direction of the second support ring 532a. In this case, the interval between a pair of adjacent second pressing protrusions 532c can be 45° or 90°.

[0112] The first sleeve 531 and the second sleeve 532 can be alternately arranged along the longitudinal direction of the guide rail 520. That is, any one of the second sleeves 532 can be arranged between a pair of adjacent first sleeves 531. Accordingly, during the process of inserting or removing the fire extinguishing tube 410 into or from the guide rail 520, the first pressing member 531b and the second pressing member 532b can simultaneously contact both circumferential surfaces of the fire extinguishing tube 410, preventing the movement of the fire extinguishing tube 410 from being restricted. Also, when the fire extinguishing tube 410 is completely inserted into the guide rail 520, the first pressing member 531b and the second pressing member 532b can support different circumferential surfaces of the fire extinguishing tube 410, preventing the fire extinguishing tube 410 from detaching from the guide rail 520.

[0113] FIG. 13 is a drawing showing a modified example of the first pressing protrusion and the second pressing protrusion illustrated in FIGS. 11 and 12, and FIG. 14 is a drawing showing a modified example of the first pressing protrusion illustrated in FIGS. 11 and 12.

[0114] Referring to FIGS. 13 and 14, a plurality of first pressing protrusions 531c and second pressing protrusions 532c can be formed to have a semi-cylindrical form in which the longitudinal direction is arranged parallel to the longitudinal direction of the guide rail 520.

[0115] FIG. 15 is a drawing showing still another modified example of the first pressing protrusion and the second pressing protrusion illustrated in FIGS. 11 and 12, and FIG. 16 is a drawing showing still another modified example of the first pressing protrusion illustrated in FIGS. 11 and 12.

[0116] Referring to FIGS. 15 and 16, the plurality of first pressing protrusions 531c and the plurality of second pressing protrusions 532c can be formed to have a rod shape extending in a direction perpendicular to the first surface 511 and the second surface 512 from the inner surfaces of the first support ring 531a and the second support ring 532a, respectively. More specifically, the plurality of first pressing protrusions 531c can extend perpendicularly from the inner surface of the first support ring 531a to the first surface 511 and the second surface 512, and the ends can be arranged to face the guide rail 520. Also, the plurality of second pressing protrusions 532c can extend perpendicularly from the inner surface of the second support ring 532a to the first surface 511 and the second surface 512, and the ends can be arranged to face the first pressing protrusions 531c with the guide rail 520 therebetween.

[0117] The support member 500 according to this embodiment can further include an end sleeve 540.

[0118] The end sleeve 540 is spaced apart from the holder body 510 and supports the end cap 420. Accordingly, the end sleeve 540 can prevent the fire extinguishing tube 410 from bending due to the weight of the end cap 420 protruding outside the guide rail 520.

[0119] FIG. 17 is a perspective view schematically showing the configuration of the end sleeve according to the first embodiment of the present invention, and FIG. 18 is a cross-sectional view schematically showing the configuration of the end sleeve according to the first embodiment of the present invention.

[0120] Referring to FIGS. 17 and 18, the end sleeve 540 can include a sleeve body 541 and a placement portion 542.

[0121] The sleeve body 541 can extend from the housing 100 toward the holder body 510. More specifically, the sleeve body 541 can extend from the inner surface of the end plate 140 of the pair of end plates 140 that faces the end cap 420 toward the holder body 510. The sleeve body 541 can have a cylindrical shape with an empty interior and an open side. The longitudinal direction of the sleeve body 541 can be arranged parallel to the longitudinal direction of the guide rail 520. The open side of the sleeve body 541 is arranged to face the holder body 510 and can be spaced apart from one end of the guide rail 520 where the end cap 420 protrudes by a predetermined distance and arranged to face each other. The end cap 420 can be inserted into the interior of the sleeve body 541 through the open side of the sleeve body 541.

[0122] The placement portion 542 is arranged inside the sleeve body 541 and can be contacted with the end of the end cap 420 inserted into the interior of the sleeve body 541. The placement portion 542 can be arranged at the corner side inside the sleeve body 541. The placement portion 542 can extend along the circumferential direction of the sleeve body 541 to form a substantially ring shape. The placement portion 542 can be formed of an elastically deformable material such as rubber or silicon.

[0123] The placement portion 542 can include an inclined surface 543 arranged to be inclined with respect to the extending direction of the sleeve body 541. The inclined surface 543 can be arranged on the boundary surface between the placement portion 542 and the sleeve body 541. The inclined surface 543 can be contacted with the corner side of the end of the cap head 421 when the end cap 420 is inserted into the interior of the sleeve body 541. In this case, the placement portion 542 can be compressed and deformed by the reaction force generated between the inclined surface 543 and the cap head 421. By arranging the inclined surface 543 to be inclined with respect to the longitudinal direction of the sleeve body 541, the placement portion 542 can press the cap head 421 in the direction toward the central axis of the end cap 420. Accordingly, the end cap 420 can maintain a state of being aligned coaxially with the sleeve body 541.

[0124] The battery module according to this embodiment can be disposed inside the housing 100 and further include a channel 600 that guides the flow of the fire extinguishing substance ejected from the fire extinguishing member 400.

[0125] FIG. 19 is a cross-sectional view schematically showing the configuration of a channel according to the first embodiment of the present invention.

[0126] Referring to FIG. 19, the channel 600 can include a first channel 610 and a second channel 620.

[0127] The first channel 610 can be disposed between the bottom surface of the housing 100, that is, the upper surface of the bottom plate 110, and the lower surface of the first battery cell 200. As an example, the first channel 610 can be exemplified as an empty space formed between the lower surface of the first battery cell 200 and the upper surface of the bottom plate 110 by the lower surface of the first battery cell 200 and the upper surface of the bottom plate 110 being spaced apart from each other. The longitudinal direction of the first channel 610 can be extended along the longitudinal direction of the housing 100. Accordingly, the first channel 610 can be disposed so as to face all of the lower surfaces of the plurality of first battery cells 200. The width of the first channel 610 may be larger than the width of the first battery cell 200. One end of the first channel 610 can communicate with the space between the side surface of the first battery cell 200 and the holder body 510.

[0128] FIG. 20 is a drawing schematically showing a state in which a fire extinguishing substance has flowed into the first channel according to the first embodiment of the present invention.

[0129] Referring to FIG. 20, when a fire occurs in any one of the first battery cells 200, the fire extinguishing substance ejected from the fire extinguishing tube 410 toward the side surface of any one of the first battery cells 200 can flow into the first channel 610 through the space between the side surface of the first battery cell 200 and the holder body 510.

[0130] The fire extinguishing substance flowing into the first channel 610 flows along the longitudinal direction of the first channel 610 and can cool the first battery cell 200 disposed at a position adjacent to the first battery cell 200 where a fire has occurred. Accordingly, the first channel 610 can prevent a fire generated from any one of the first battery cells 200 from spreading to the adjacent first battery cell 200.

[0131] The second channel 620 can be disposed between the bottom surface of the housing 100, i.e., the upper surface of the bottom plate 110 and the lower surface of the second battery cell 300. As an example, the second channel 620 can be exemplified as an empty space formed between the lower surface of the second battery cell 300 and the upper surface of the bottom plate 110 by the lower surface of the second battery cell 300 and the upper surface of the bottom plate 110 being separated from each other. The longitudinal direction of the second channel 620 can be extended along the longitudinal direction of the housing 100. Accordingly, the second channel 620 can be disposed so as to face all of the lower surfaces of the plurality of second battery cells 300. The width of the second channel 620 may be larger than the width of the second battery cell 300. One end of the second channel 620 can communicate with the space between the side surface of the second battery cell 300 and the holder body 510.

[0132] When a fire occurs in any one of the second battery cells 300, the fire extinguishing substance ejected from the fire extinguishing tube 410 toward the side surface of any one of the second battery cells 300 can flow into the second channel 620 through the space between the side surface of the second battery cell 300 and the holder body 510.

[0133] The fire extinguishing substance flowing into the second channel 620 can flow along the longitudinal direction of the second channel 620 and cool the second battery cell 300 disposed at a position adjacent to the second battery cell 300 where the fire has occurred. Accordingly, the second channel 620 can prevent a fire generated from one of the second battery cells 300 from spreading to the adjacent second battery cell 300.

[0134] Hereinafter, the battery module according to the second embodiment of the present invention will be described.

[0135] The battery module according to the second embodiment of the present invention may be configured to be different only in the detailed configurations of the first pressing member 531b and the second pressing member 532b from the battery module according to the first embodiment of the present invention.

[0136] Accordingly, in describing the battery module according to the second embodiment of the present invention, only the detailed configurations of the first pressing member 531b and the second pressing member 532b different from those of the battery module according to the first embodiment of the present invention will be described.

[0137] Regarding the remaining configuration of the battery module according to the second embodiment of the present invention, the descriptions of the housing 100, the first battery cell 200, the second battery cell 300, the fire extinguishing member 400, the support member 500, and the channel 600 of the battery module according to the first embodiment of the present invention can be directly applied.

[0138] FIG. 21 is a perspective view schematically showing the configurations of the first pressing member and the second pressing member according to the second embodiment of the present invention, FIG. 22 is a front view schematically showing the configurations of the first pressing member and the second pressing member according to the second embodiment of the present invention, and FIG. 23 is a cross-sectional view schematically showing the configuration of the first pressing member according to the second embodiment of the present invention.

[0139] Referring to FIGS. 21 to 23, the first pressing member 531b according to this embodiment may include a first pressing ring 531d, and the second pressing member 532b may include a second pressing ring 532d.

[0140] The first pressing ring 531d may protrude from the inner surface of the first support ring 531a toward the central axes of the first support ring 531a and the fire extinguishing tube 410. The first pressing ring 531d may be continuously extended along the circumferential direction of the first support ring 531a. Accordingly, the first pressing ring 531d may have a substantially semi-circular cross-sectional shape. The first pressing ring 531d may be formed such that the width gradually narrows toward the end.

[0141] The second pressing ring 532d may protrude from the inner surface of the second support ring 532a toward the central axes of the second support ring 532a and the fire extinguishing tube 410. The second pressing ring 532d may be continuously extended along the circumferential direction of the second support ring 532a. Accordingly, the second pressing ring 532d may have a substantially semi-circular cross-sectional shape. The second pressing ring 532d may be formed such that the width gradually narrows toward the end.

[0142] Hereinafter, the battery module according to the third embodiment of the present invention will be described.

[0143] The battery module according to the third embodiment of the present invention may be configured to differ only in the detailed configuration of the battery module according to the first embodiment of the present invention and the end sleeve 540.

[0144] Accordingly, in describing the battery module according to the third embodiment of the present invention, only the detailed configuration of the end sleeve 540 that is different from the battery module according to the first embodiment of the present invention will be described.

[0145] Regarding the remaining configuration of the battery module according to the third embodiment of the present invention, the descriptions of the housing 100, the first battery cell 200, the second battery cell 300, the fire extinguishing member 400, the support member 500, and the channel 600 of the battery module according to the first embodiment of the present invention can be directly applied as they are.

[0146] FIG. 24 is a cross-sectional view schematically showing the configuration of the end sleeve according to the third embodiment of the present invention.

[0147] Referring to FIG. 24, the end sleeve 540 according to the present embodiment may include a sleeve body 541 and a locking portion 544.

[0148] The locking portion 544 protrudes from the inner surface of the sleeve body 541 and can be in contact with the end cap 420. More specifically, the locking portion 544 may be formed in the form of a protrusion protruding from the inner surface of the sleeve body 541 toward the central axis of the sleeve body 541. The locking portion 544 can be inserted between the cap head 421 and the cap rib 423 or between a pair of adjacent cap ribs 423 when the end cap 420 is completely inserted into the sleeve body 541. Accordingly, the locking portion 544 can prevent the end cap 420 from detaching from the sleeve body 541 due to the locking force with the cap head 421 or the cap rib 423.

[0149] FIGS. 25 and 26 are drawings showing modified examples of the locking portion illustrated in FIG. 24.

[0150] Referring to FIGS. 25 and 26, a plurality of locking portions 544 may be provided. The plurality of locking portions 544 may be arranged at set intervals along the circumferential direction of the sleeve body 541. The plurality of locking portions 544 may be arranged in a row at equal intervals along the circumferential direction of the sleeve body 541. For example, as shown in FIG. 25, a pair of locking portions 544 may be provided, and the angle between the pair of locking portions 544 may be 180°. Also, as shown in FIG. 26, four locking portions 544 may be provided, and the angle between an adjacent pair of locking portions 544 may be 90°.

[0151] The present invention has been described with reference to the embodiments illustrated in the drawings, which are merely exemplary, and it will be understood by those of ordinary skill in the art to which the technology pertains that various modifications and equivalent other embodiments are possible hereinafter.

[0152] Therefore, the technical protection scope of the present invention should be defined by the above claims.

Description of Reference Numerals

[0153] 100 Housing 110 Bottom Plate 120 Top Plate 130 Side Plate 140 End Plate 200 First Battery Cell 300 Second Battery Cell 400 Fire Extinguishing Member 410 Fire Extinguishing Tube 411 First End 412 Second End 420 End Cap 421 Cap Head 422 Cap Body 423 Cap Rib 430 Supply Port 431 Fixed Bracket 432 First Port Body 433 Port Rib 434 Second port body 500 Support member 510 Holder body 511 First surface 512 Second surface 520 Guide rail 530 Sleeve 531 First sleeve 531a First support ring 531b First pressure member 531c First pressure projection 531d First pressure ring 532 Second sleeve 532a Second support ring 532b Second pressure member 532c Second pressure projection 532d Second pressure ring 540 End sleeve 541 Sleeve body 542 Mounting portion 543 Inclined surface 544 Locking portion 600 Channel 610 First channel 620 Second channel

Claims

1. A housing, a first battery cell disposed inside the housing, a second battery cell disposed inside the housing and separated from the first battery cell, a fire extinguishing member disposed between the first battery cell and the second battery cell and injecting a fire extinguishing substance into the first battery cell and the second battery cell, and a support member disposed inside the housing and supporting the fire extinguishing member, characterized in that the battery module includes the above components.

2. The fire extinguishing member includes: a fire extinguishing tube having a first end and a second end, an end cap connected to the first end and sealing the fire extinguishing tube, and a supply port connected to the second end and supplying a fire extinguishing substance to the fire extinguishing tube, characterized in that the battery module according to claim 1 includes the above components.

3. The fire extinguishing tube according to claim 2 is characterized in that it melts when heated to a set temperature or higher.

4. The fire extinguishing tube according to claim 2 is characterized in that it is elastically deformable.

5. The end cap includes: a cap head disposed to face the first end, a cap body extending from the cap head and inserted into the first end, and a cap rib extending from the cap body and adhering to the inner surface of the first end, characterized in that the battery module according to claim 2 includes the above components.

6. The supply port includes: a fixing bracket disposed to face the second end and coupled to the housing, a first port body extending from the fixing bracket, inserted into the second end, and communicating with the internal space of the second end, a port rib extending from the first port body and adhering to the inner surface of the second end, and a second port body extending from the fixing bracket, protruding outside the housing, and communicating with the first port body, characterized in that the battery module according to claim 2 includes the above components.

7. The support member includes: a holder body disposed between the first battery cell and the second battery cell, and a guide rail formed through the holder body and into which the fire extinguishing member is inserted. A sleeve that is connected to the holder body and is arranged to surround the fire extinguishing tube, characterized in that it includes the battery module according to claim 2.

8. The holder body A first surface arranged to face the first battery cell, A second surface arranged to face the second battery cell, characterized in that it includes the battery module according to claim 7. The sleeve A first sleeve that is connected to the first surface and is arranged to surround one side of the fire extinguishing tube, A second sleeve that is connected to the second surface and is arranged to surround the other side of the fire extinguishing tube, characterized in that it includes the battery module according to claim 7.

9. The first sleeve and the second sleeve are provided in plurality, and the plurality of first sleeves and second sleeves are arranged in a row along the longitudinal direction of the guide rail, characterized in that it includes the battery module according to claim 8.

10. The first sleeve and the second sleeve are alternately arranged along the longitudinal direction of the guide rail, characterized in that it includes the battery module according to claim 8.

11. The first sleeve A first support ring arranged between the first battery cell and the first surface, A first pressing member protruding from the first support ring toward the fire extinguishing tube, characterized in that it includes the battery module according to claim 8. The second sleeve A second support ring arranged between the second battery cell and the second surface, A second pressing member protruding from the second support ring toward the fire extinguishing tube, characterized in that it includes the battery module according to claim 8.

12. The first pressing member includes a plurality of first pressing protrusions arranged along the circumferential direction of the first support ring, characterized in that it includes the battery module according to claim 11.

13. The first pressing member includes a first pressing ring extending along the circumferential direction of the first support ring, characterized in that it includes the battery module according to claim 11.

14. The support member is separated from the holder body and further includes an end sleeve for supporting the end cap, characterized in that it includes the battery module according to claim 7.

15. The end sleeve A sleeve body that extends from the housing toward the holder body and into which the end cap is inserted; The battery module according to claim 14, further comprising a placement portion disposed inside the sleeve body and in contact with an end of the end cap. **Claim 16** The battery module according to claim 15, wherein the placement portion includes an inclined surface disposed to be inclined with respect to an extending direction of the sleeve body. **Claim 17** The end cap A cap head disposed to face the first end; A cap body extending from the cap head and inserted into the first end; A cap rib extending from the cap body and in close contact with an inner surface of the first end, and includes: The end sleeve A sleeve body that extends from the housing toward the holder body and into which the end cap is inserted; The battery module according to claim 14, further comprising a locking portion protruding from an inner surface of the sleeve body and in contact with the end cap. **Claim 18** The battery module according to claim 17, wherein the locking portion is inserted between the cap rib and the cap head. **Claim 19** The battery module according to claim 1, further comprising a channel disposed inside the housing for guiding a flow of a fire extinguishing substance ejected from the fire extinguishing member. **Claim 20** The channel A first channel disposed between a bottom surface of the housing and the first battery cell; The battery module according to claim 19, further comprising a second channel disposed between a bottom surface of the housing and the second battery cell.

Images