Battery module

Abstract

Battery module (100) which may comprise: a plurality of stacked battery cells (110), an inner venting layer (400) arranged on one side of the battery cells (110), wherein the inner venting layer (400) has an inner groove portion (410) having a thickness less than the thickness of a circumferential region, or having a cut shape in a region facing the battery cells (110), and an outer venting layer (500) arranged such that the inner venting layer (400) is between the battery cells (110) and the outer venting layer (500), wherein the outer venting layer (500) has an outer groove portion (510) having a thickness less than the thickness of a circumferential region, or having a cut shape.

Description

TECHNICAL AREA

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

[0002] Recently, as awareness of the environmental crisis and the depletion of petroleum resources has increased, research and development on electric vehicles, which are environmentally friendly vehicles, has emerged.

[0003] An electric vehicle is a vehicle that uses electricity as a source of propulsion power and may have a battery pack. The battery pack may contain a battery module, which has multiple battery cells.

[0004] If a fire occurs in a battery cell, it can spread to a neighboring cell, potentially resulting in thermal runaway within the battery module or pack. To prevent this, there is a growing need for a structure within the battery module or pack that diverts foreign substances or high-pressure fluid caused by the fire in a direction other than towards adjacent cells where no fire has occurred. EXPLANATION

[0005] An embodiment of the present disclosure / invention can solve the above-mentioned problems that arise in the prior art, while retaining the advantages gained through the prior art.

[0006] An embodiment of the present disclosure / invention can provide a battery module that is capable of venting (e.g., expelling, e.g., discharging) foreign substances (e.g., fragments) or a high-pressure fluid due to a fire to an outside of the battery module, and of preventing the vented and rebounded (e.g., rebounding, e.g., rebounding, e.g., rebounding) foreign substances (e.g., fragments) or the (vented and rebounded) high-pressure fluid from being introduced (e.g., penetrating) into another battery cell.

[0007] The technical problems to be solved by some embodiments of the present disclosure / invention are not necessarily limited to the problems mentioned above, and solutions to other technical problems not mentioned here by any embodiment of the present disclosure / invention can be clearly understood from the following description by a person skilled in the field to which the present disclosure / invention belongs.

[0008] According to one embodiment of the present disclosure / invention, a battery module may comprise: a plurality of stacked battery cells, an inner venting layer (e.g., an inner ventilation layer, e.g., an inner ventilation layer) arranged on (e.g., on) one side of the battery cells, which may have an inner groove portion having a thickness less than the thickness of a circumferential region, or having a cut shape in a region facing the battery cells, and an outer venting layer (e.g., an outer ventilation layer, e.g., an outer ventilation layer) arranged such that the inner venting layer is between the battery cells and the outer venting layer, and which may have an outer groove portion having a thickness less than the thickness of a circumferential region, or having a cut shape.

[0009] When the inner vent layer and the outer vent layer are viewed in a direction in which the inner vent layer and the outer vent layer are stacked, the outer groove portion is configured to be surrounded by the inner groove portion.

[0010] The inner groove portion can extend to surround an inner venting area (e.g., an inner ventilation area) at (e.g., on) the inner venting layer, and the outer groove portion can be configured to surround an outer venting area (e.g., an outer ventilation area) at (e.g., on) the outer venting layer, and the outer venting area can have an extent that is smaller than an extent of the inner venting area.

[0011] The inner vent layer can have a pair of inner groove parts (e.g., a pair of inner groove parts) arranged (e.g., arranged) to extend parallel to each other. And when viewed in a direction in which the inner vent layer and the outer vent layer are stacked, the outer groove part can be positioned between the pair of inner groove parts.

[0012] The battery module may further have a position-holding frame (e.g. a layer-holding frame) that is arranged between the inner venting layer and the outer venting layer, and the position-holding frame may hold (e.g. support, e.g. carry) the inner venting layer and the outer venting layer.

[0013] The position-holding frame may have a communication hole (e.g., it may be formed within it) that is located between the inner groove part and the outer groove part.

[0014] The position-holding frame can have a frame body area and a frame holding area which projects from the frame body area towards the inner venting layer or the outer venting layer and which has a thickness greater than the thickness of the frame body area and which surrounds the communication hole.

[0015] When viewed in a direction where the inner vent layer, the layer support frame, and the outer vent layer are stacked, the inner groove portion and the outer groove portion can be configured to be surrounded by the frame support area.

[0016] The position-holding frame can have a frame body area that limits the communication hole (e.g., that borders it) and a frame cross area (e.g., a frame intersection area) that is connected to the frame body area and extends in a direction that crosses (e.g., traverses, e.g., passes through) the communication hole.

[0017] The frame cross-section can extend along the outer vent layer on an outer vent layer side (e.g., one side of the outer vent layer) and (can) be at least partially aligned with the outer groove part (e.g., flush with it).

[0018] The inner venting layer and the outer venting layer may contain a mica material.

[0019] According to one embodiment of the present disclosure / invention, a battery module can comprise: a plurality of stacked battery cells, a venting layer (e.g., a ventilation layer) arranged on one side of the battery cells and having a groove portion having a thickness less than the thickness of a circumferential region, or having a cut shape in a region facing the battery cells, and a layer-holding frame arranged between the venting layer and the battery cells, or arranged on a first side opposite a second side.on) the battery cells are provided in relation to the venting position, and (which) has a frame groove part having a thickness that is less than a thickness of a circumferential area, or (which) has a cut shape.

[0020] The groove portion can extend to surround a venting area (e.g., a ventilation area) on (e.g., at) the venting layer, and the frame groove portion can extend to surround an area that has an extent different from an extent of the venting area on (e.g., at) the layer support frame.

[0021] The mounting frame may touch the vent layer or the battery cells (e.g., be in contact with them).

[0022] The vent layer may be made of a mica material, and the layer support frame may be configured to have a thickness greater than the thickness of the vent layer, and the layer support frame may be made of a layer support frame material configured to provide flame resistance and thermal insulation.

[0023] The vent layer can be an inner vent layer, and the battery module can further comprise an outer vent layer. The layer support frame can be located between the inner and outer vent layers, and the inner vent layer can be located between the layer support frame and the battery cells. The outer vent layer can have an outer groove portion, wherein the outer groove portion has a thickness less than the thickness of a circumferential region outside the outer groove portion, or (e.g., wherein the outer groove portion has a cut shape). The layer support frame can have a communication hole (e.g., one can be formed therein) located between the inner and outer vent layers. The communication hole is located on (e.g., formed in) the outer groove portion.

[0024] The vent layer can be an outer vent layer, and the battery module can further comprise an inner vent layer. The layer support frame can be located between the inner and outer vent layers, and the inner vent layer can be located between the layer support frame and the battery cells. The inner vent layer can have an inner groove portion, wherein the inner groove portion has a thickness less than the thickness of a circumferential region outside the inner groove portion, or (where the inner groove portion) has a cut shape in a region facing the battery cells. The layer support frame can have a communication hole (e.g., this hole can be formed within it) located between the inner and outer vent layers. The communication hole can be located on the inner groove portion (e.g., formed within it).

[0025] According to one embodiment of the present disclosure / invention, a method for controlling a fire in a battery module (e.g., in a battery module) may comprise: providing the battery module, wherein the battery module comprises: a first battery cell, a second battery cell stacked adjacent to the first battery cell, and a venting layer (e.g., a ventilation layer, e.g., a ventilation layer) arranged on (e.g., on) a first side of the first and second battery cells, wherein the venting layer comprises a set of venting layer groove parts, each of the venting layer groove parts having at least one venting layer groove part thickness (e.g., a thickness of the venting layer groove part, e.g., a thickness of the groove part of the venting layer) that is less than a venting layer circumferential area thickness (e.g., a thickness of the venting layer circumferential area, e.g., a thickness of the venting layer circumferential area).a thickness of the perimeter of the vent layer) of a vent layer perimeter area outside the vent layer groove part, or a vent layer groove part cut shape in an area facing the first and second battery cells, and a layer holding frame. The layer-holding frame can be arranged between the vent layer and the first and second battery cells, or the vent layer can be arranged between the layer-holding frame and the first and second battery cells, and the layer-holding frame can have a set of frame-slot parts, each of which has at least one of a frame-slot part thickness (e.g. a thickness of a frame-slot part) that is less than a frame-slot part circumferential area thickness of a frame-slot part circumferential area (e.g. a circumferential area of ​​the frame-slot part) outside the frame-slot part, or a frame-slot part cut shape.The method for controlling a fire in a battery module (e.g., within a battery module) may include: as a result of a fire in the first battery cell, breaking (e.g., rupturing, perforating, tearing) a first venting groove part and a first frame groove part located on the first battery cell outwards in order to vent (e.g., release, discharge) pressure and deposits (e.g., pieces, elements, fragments) from the first battery cell due to the fire outwards from the first battery cell via the first venting groove part and the first frame groove part located on the first battery cell; and non-breaking (e.g., not rupturing, not perforating, etc.).Non-tearing (or allowing to tear) of a second vent layer groove part of the vent layer groove parts and a second frame groove part of the frame groove parts arranged on the second battery cell, by means of the pressure and deposits (e.g. pieces, e.g. elements, e.g. fragments) from the fire of the first battery cell.

[0026] According to one embodiment of the present disclosure / invention, a method for controlling a fire in a battery module (e.g. in a battery module) may further comprise: thermally isolating the second battery cell from the fire in the first battery cell by means of the venting layer and the position-holding frame on the second battery cell.

[0027] The vent layer can be an outer vent layer, and the battery module can further comprise an inner vent layer, and the layer support frame can be located (e.g., arranged) between the inner vent layer and the outer vent layer, and the inner vent layer can be located (e.g., arranged) between the layer support frame and the battery cells. The inner vent layer can comprise a set of inner groove portions, each of which has at least one inner groove portion thickness (e.g., an inner groove portion thickness) that is less than an inner vent layer perimeter area thickness (e.g., a perimeter area of ​​an inner vent layer) outside the inner groove portion, or an inner groove portion cut shape in an area facing the first and second battery cells, and the layer support frame can comprise a first communication hole (e.g.,This can be formed therein), which is arranged (e.g. formed) between the inner venting layer and the outer venting layer, wherein the first communication hole is arranged on a first inner groove portion of the inner groove portions arranged on the first battery cell. The method can further comprise: as a result of the fire in the first battery cell, breaking (e.g., rupturing, perforating, tearing) the first inner groove portion arranged on the first battery cell outwards in order to vent (e.g., discharge, discharge) the pressure and deposits (e.g., the pieces, the elements, the fragments) of the first battery cell due to the fire outwards from the first battery cell via the first inner groove portion and via the first communication hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features / properties and advantages of exemplary embodiments of the present disclosure / invention can be better seen from the following detailed description in conjunction with the accompanying drawings, in which: Fig. 1 a perspective view of a battery module according to an embodiment of the present disclosure / invention; Fig. 2 a vertical cross-sectional view of the in Fig. 1 shown battery module is; Fig. 3 an enlarged perspective view of an outer venting layer, an inner venting layer and a battery cell according to an embodiment of the present disclosure / invention; Fig. 4 a vertical cross-sectional view of a battery module according to an embodiment of the present disclosure / invention; Fig. 5A is a top view of an outer venting layer and an inner venting layer according to an embodiment of the present disclosure / invention; Fig. 5B is a top view of an outer venting layer and an inner venting layer according to an embodiment of the present disclosure / invention; Fig. 5C is a top view of an outer venting layer and an inner venting layer according to an embodiment of the present disclosure / invention; Fig. 6 top views of internal venting layers according to different embodiments of the present disclosure / invention; Fig. 7 a perspective view of components of a battery module except for the outer venting position according to an embodiment of the present disclosure / invention; Fig. 8 a vertical cross-sectional view of a battery module according to an embodiment of the present disclosure / invention; Fig. 9 is a top view of a position-holding frame according to an embodiment of the present disclosure / invention; Fig. 10 a vertical cross-sectional view of a position-holding frame, an inner venting layer and an outer venting layer, which extend along line AA' in Fig. 9 is taken, is; Fig. 11 a vertical cross-sectional view of a position holding frame, an inner venting layer and an outer venting layer according to an embodiment of the present disclosure / invention; Fig. 12 is a top view of a position holding frame according to an embodiment of the present disclosure / invention; Fig. 13 a vertical cross-sectional view of a position-holding frame, an inner venting layer and an outer venting layer, which are arranged along line BB' in Fig. 12 is taken, is; Fig. 14 top views of position-holding frames according to various embodiments of the present disclosure / invention; Fig. 15 a top view of a position holding frame according to an embodiment of the present disclosure / invention; Fig. 16 a vertical cross-sectional view of a position-holding frame and an external venting layer, which runs along line CC' in Fig. 15 is taken, is; Fig. 17 a vertical cross-sectional view of a position holding frame and an outer venting position according to an embodiment of the present disclosure / invention; Fig. 18 a vertical cross-sectional view of a position holding frame and an inner venting position according to an embodiment of the present disclosure / invention; Fig. 19 a vertical cross-sectional view of a position-holding frame and an inner venting position according to an embodiment of the present disclosure / invention; and Fig. Figure 20 is a perspective view of a battery module according to an embodiment of the present disclosure / invention. DETAILED DESCRIPTION OF ILLUSTRATORY EXECUTION FORMS

[0029] Exemplary embodiments of the present disclosure / invention are described in detail below with reference to the accompanying drawings. The same reference numerals may be used throughout the drawings to denote identical or substantially similar components. Detailed descriptions associated with well-known functions or configurations may be omitted from the description of the exemplary embodiments of the present disclosure / invention if they might unnecessarily obscure aspects of the present disclosure / invention.

[0030] In describing components of embodiments of the present disclosure / invention, the terms "first," "second," "A," "B," "(a)," "(b)," and the like may be used. Such terms may be used merely to distinguish one component from another, but do not necessarily restrict the corresponding components regardless of their nature, order, or priority. Furthermore, unless otherwise defined, terms used herein that include technical and scientific concepts may be interpreted as is customary in the field to which the present disclosure / invention belongs. Such terms, as defined in a commonly used dictionary, may be interpreted to have meanings equal to their contextual meanings in the relevant field of technology.

[0031] The following are examples of embodiments of the present disclosure / invention described in detail with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19 to Fig. 20 described. In the following, a first direction can be the X direction or a direction opposite to the X direction, a second direction can be the Y direction or a direction opposite to the Y direction, and a third direction can be the Z direction or a direction opposite to the Z direction.

[0032] Fig. Figure 1 is a perspective view of a battery module according to an embodiment of the present disclosure / invention. Fig. Figure 2 is a vertical cross-sectional view of the [structure]. Fig. 1 shown battery module. Fig. Figure 3 is an enlarged perspective view of an outer venting layer, an inner venting layer and a battery cell according to an embodiment of the present disclosure / invention.

[0033] With reference to Fig. 1, Fig. 2 to Fig. 3. The battery module 100 can comprise a battery cell 110, a module housing 200 surrounding the battery cell 110, and a module cover 300. The battery cell 110 can be stacked in the first direction (the X-direction or a direction opposite to the X-direction) inside the module housing 200. A surface pressure element 114, which exerts a surface pressure on the battery cell 110, can be provided between the battery cells 110.

[0034] The module housing 200 can have a module base plate 210, a first side plate 220, and a second side plate 230. The module base plate 210 can be positioned on one side of the battery cell 110 in the third direction (a direction opposite to the Z-direction) and can hold (e.g., support) the battery cells 110. The module base plate 210 can also be omitted.

[0035] In one embodiment, a pair of first side plates 220 are provided and arranged on opposite (e.g., facing) sides of the battery cells 110 in the first direction. The pair of first side plates 220 can cover (e.g., cover) opposite (e.g., facing) surfaces of the battery cells 110 in the first direction.

[0036] In one embodiment, a pair of second side plates 230 are provided and can be arranged on opposite (e.g., opposite) sides of the battery cells 110 in the second direction (the Y-direction or a direction opposite to the Y-direction). The pair of second side plates 230 can cover (e.g., cover) opposite (e.g., opposite) surfaces of the battery cells 110 in the second direction.

[0037] The module cover 300 can be held (e.g., supported) by means of the pair of second side plates 230 and can be arranged on (e.g., opposite) a side (e.g., opposite the Z-direction) of the battery cells 110 in the third direction. The module cover 300 can cover an area that faces (e.g., opposite) a side (e.g., opposite the Z-direction) of the battery cells 110 in the third direction.

[0038] The battery module 100 can further comprise an inner venting layer (e.g., an inner ventilation layer) 400, which is held (e.g., supported) by the module cover 300 or the first side plate 220. The inner venting layer 400 can be arranged on (e.g., opposite) a side (e.g., the Z-direction) of the battery cells 110 in the third direction and can have an inner groove portion 410 having a thickness less than the thickness of a circumferential region on a surface facing (e.g., opposite) the battery cells 110. The inner groove portion 410 can be a section of the inner venting layer 400 having a reduced thickness (e.g., reduced relative to its surroundings).

[0039] The battery module 100 can have an outer vent layer (e.g., an outer ventilation layer) 500, which is arranged on (e.g., opposite) the side on (e.g., opposite) where the battery cells 110 are provided with respect to the inner vent layer 400. The outer vent layer 500 can have an outer groove portion 510 having a thickness that is less than the thickness of a circumferential region. The outer groove portion 510 can be a section of the outer vent layer 500 having a reduced thickness (e.g., reduced relative to its surroundings).

[0040] Both the inner venting layer 400 and the outer venting layer 500 can be made of a material that provides thermal insulation and flame resistance. For example, both the inner venting layer 400 and the outer venting layer 500 can be made of mica.

[0041] A section formed to be broken (e.g., torn, e.g., perforated) by means of the outer groove part 510 of the outer vent layer 500 may be formed to be smaller than a section formed to be broken (e.g., torn, e.g., perforated) by means of the inner groove part 410 of the inner vent layer 400.

[0042] For example, if the inner vent layer 400 and the outer vent layer 500 are viewed in a direction in which the inner vent layer 400 and the outer vent layer 500 are stacked (e.g., the -Z direction), the outer groove part 510 can be configured to be surrounded by the inner groove part 410.

[0043] With this structure, if a fire occurs in a battery cell 110, the inner venting layer 400 and the outer venting layer 500 can be sequentially broken on an opposite (e.g., opposite) side (of the Z-direction) of the battery cell 110 in the third direction, so that foreign substances (e.g., fragments) or a high-pressure fluid generated by the fire can be vented (e.g., discharged, e.g., carried away) from the inside of the battery module 100 to the outside of the battery module 100.

[0044] In contrast, as in Fig. As shown in Figure 3, foreign substances (e.g. fragments) or a high-pressure fluid that is vented to the outside can rebound (e.g. be rebounded) by means of a packing cover (not shown) and contact (e.g. touch) an adjacent outer venting layer 500, but even if the outer groove part 510 of the outer venting layer 500 is broken by means of the pressure, the foreign substances (e.g. fragments) or the high-pressure fluid cannot directly contact (e.g. touch) the inner groove part 410 through the broken section of the outer venting layer 500.

[0045] In this way, since the outer groove part 510 can be broken, and it is possible that the inner groove part 410, which receives pressure from the outside, will not be broken, it may be possible to prevent foreign substances (e.g., fragments) or a high-pressure fluid from contacting (e.g., touching) the battery cell 110 through the inner venting layer 400. Accordingly, it may be possible to prevent a thermal runaway phenomenon from occurring in the battery module 100, and the safety of the battery module 100 may be improved.

[0046] Fig. Figure 4 is a vertical cross-sectional view of a battery module according to a further embodiment of the present disclosure / invention. Fig. Figure 5A is a top view of an outer venting layer and an inner venting layer according to a further embodiment of the present disclosure / invention.

[0047] With reference to Fig. 4 and Fig. 5A a battery module 100-1 according to a further embodiment of the present disclosure / invention can have an inner venting layer 400-1, which differs from the inner venting layer 400 of the battery module 100 according to the embodiment described above, and an outer venting layer 500-1, which differs from the outer venting layer 500 of the battery module 100 according to the embodiment described above.

[0048] The inner venting layer 400-1 can be arranged on an opposite (e.g. opposite) side (of the Z-direction) of the battery cell 110 in the third direction and can have an inner groove part 410-1 which is formed on (e.g. on) an area which faces (e.g. opposite) the battery cell 110 and has a cut shape.

[0049] Furthermore, the outer venting layer 500-1 can be arranged on (e.g. on) an opposite (e.g. opposite) side on (e.g. on) where the battery cell 110 is provided with respect to the inner venting layer 400-1, and can have an outer groove part 510-1 which has a cut shape.

[0050] As in Fig. 5A shown when the inner vent layer 400-1 and the outer vent layer 500-1 are viewed in a direction in which the inner vent layer 400-1 and the outer vent layer 500-1 are stacked (e.g., the Z-direction), (then) the outer groove part 510-1 can be configured to be surrounded by the inner groove part 410-1.

[0051] The inner groove part 410-1 and the outer groove part 510-1 can extend along a section of an elliptical circumference.

[0052] For example, the inner vent layer 400-1 can have an inner vent area (e.g., an inner ventilation area) 420-1, which is defined by the inner groove portion 410-1. The inner groove portion 410-1 can extend to surround an inner vent area 420-1, which is an area on (e.g., at) the inner vent layer 400-1.

[0053] Furthermore, the outer vent layer 500-1 can have an outer vent area (e.g., an outer ventilation area) 520-1, which is defined by the outer groove portion 510-1. The outer groove portion 510-1 can extend to surround an outer vent area 520-1, which is an area on (e.g., at) the outer vent layer 500-1.

[0054] The outer venting area 520-1 can have an extent that is smaller than the extent of the inner venting area 420-1. That is, the outer groove portion 510-1 can be configured to surround an outer venting area 520-1, which has an extent that is smaller than the extent of the inner venting area 420-1, at (e.g., on) the outer venting layer 500-1.

[0055] Even with this structure, if a fire occurs in a battery cell 110, the inner venting layer 400-1 and the outer venting layer 500-1 can be sequentially broken, so that foreign substances (e.g. fragments) or a high-pressure fluid generated by the fire can be vented from the inside of the battery module 100-1 to the outside of the battery module 100-1.

[0056] In contrast, foreign substances (e.g. fragments) or a high-pressure fluid that is vented to the outside (e.g. from an adjacent battery cell rupture / fire) can rebound (e.g. be rebounded) by means of a pack cover and contact (e.g. touch) an unbroken outer venting layer 500-1, but even in this case, even if the outer venting layer 500-1 is / becomes broken along the outer groove part 510-1, it is possible that the foreign substances (e.g. fragments) or the high-pressure fluid will not directly contact an area adjacent to the inner groove part 410-1.

[0057] Accordingly, since it is possible that the inner vent layer 400-1 along the inner groove portion 410-1 will not be broken, it may be possible to prevent foreign substances (e.g., fragments) or a high-pressure fluid from contacting (e.g., touching) a battery cell 110 in which no fire has occurred. This principle may prevent a thermal runaway phenomenon in the battery module 100-1, and the safety of the battery module 100-1 may be improved.

[0058] Fig. 5B is a top view of an outer venting layer and an inner venting layer according to yet another embodiment of the present disclosure / invention.

[0059] With reference to Fig. 5B, an outer venting layer 500a-1 according to an embodiment of the present disclosure / invention can have a shape that differs from the shape of the outer venting layer 500-1 according to the embodiment of the present disclosure / invention. Fig. 5A differs.

[0060] An internal venting layer 400a-1 according to an embodiment of the present disclosure / invention can have the same shape as the internal venting layer 400-1 according to the embodiment of the present disclosure / invention of Fig. 5A. Accordingly, for a description of the inner venting position 400a-1 according to the embodiment of Fig. 5B the description of the inner venting position 400-1 according to the embodiment of the present disclosure / invention of Fig. 5A can be used.

[0061] The outer venting layer 500a-1 can have an outer groove part 510a-1 which has a cut shape, and the inner venting layer 400a-1 can have an inner groove part 410a-1 which has a cut shape.

[0062] If the inner vent layer 400a-1 and the outer vent layer 500a-1 are viewed in a direction in which the inner vent layer 400a-1 and the outer vent layer 500a-1 are stacked (e.g., the -Z direction), (then) the outer groove part 510a-1 can be configured to be surrounded by the inner groove part 410a-1.

[0063] The inner groove portion 410a-1 can extend along a section of an elliptical circumference. The inner vent layer 400a-1 can have an inner vent area 420a-1, which is defined by the inner groove portion 410a-1. The inner groove portion 410a-1 can extend to surround an inner vent area 420a-1, which is an area on (e.g., at) the inner vent layer 400a-1.

[0064] If the inner vent layer 400a-1 and the outer vent layer 500a-1 are considered in a direction in which the inner vent layer 400a-1 and the outer vent layer 500a-1 are stacked (e.g., the Z-direction), (then) the outer groove part 510a-1 can be provided on (e.g., on) an opposite (e.g., opposite) side (of the Z-direction) to the inner vent area 420a-1 in the third direction.

[0065] Even with this structure of Fig. 5B, if a fire occurs in battery cell 110 (see Fig. 4) Foreign substances (e.g. fragments) or a high-pressure fluid generated by the fire can be vented to the outside of the battery module 100-1, and even if the foreign substances (e.g. fragments) or the high-pressure fluid vented to the outside of the battery module 100-1 rebound (e.g. rebound) by means of a pack cover, it may be possible to prevent them from being introduced (e.g. penetrate) into a battery cell 110 in which no fire has occurred.

[0066] Fig. Figure 5C is a top view of an outer venting layer and an inner venting layer according to yet another embodiment of the present disclosure / invention.

[0067] With reference to Fig. 5C, an outer venting layer 500b-1 and an inner venting layer 400b-1 according to an embodiment of the present disclosure / invention can have shapes that differ from the shapes of the outer venting layer 500-1 and the inner venting layer 400-1 according to the embodiment of the present disclosure / invention. Fig. 5A differ.

[0068] The inner vent layer 400b-1 can have an inner groove section 410b-1, which has a cut shape. A pair of inner groove sections 410b-1 can be configured to extend parallel to each other. Each of the pair of inner groove sections 410b-1 can extend along a straight line.

[0069] The outer vent layer 500b-1 can have an outer groove section 510b-1, which has a cut shape. The outer groove section 510b-1 can also extend along a straight line.

[0070] If the inner vent layer 400b-1 and the outer vent layer 500b-1 are viewed in a direction in which the inner vent layer 400b-1 and the outer vent layer 500b-1 are stacked (e.g., the -Z direction), (then) the outer groove part 510b-1 can be provided between the pair of inner groove parts 410b-1.

[0071] Even with this structure of Fig. 5C, if a fire occurs in battery cell 110 (see Fig. 4) Foreign substances (e.g. fragments) or a high-pressure fluid generated by the fire can be vented to the outside of the battery module 100-1, and the foreign substances (e.g. fragments) or the high-pressure fluid vented to the outside of the battery module 100-1 can rebound (e.g. be rebounded) by means of a pack cover, so that it may be possible to prevent them from being introduced (e.g. invading) into a battery cell 110 in which no fire has occurred.

[0072] Fig. Figure 6 shows top views of internal venting layers according to various embodiments of the present disclosure / invention.

[0073] With reference to Fig. 6. Internal venting layers 400c-1, 400d-1, 400e-1, 400f-1, 400g-1, 400h-1 and 400i-1 can be provided in various embodiments.

[0074] As an example, an inner groove portion 410c-1 of the inner venting layer 400c-1 can be formed to extend along a section of a rectangular perimeter to surround an area facing (e.g., opposite) the battery cell 110 (see Fig. 4).

[0075] As an example, a pair of inner groove parts 410d-1 in the inner vent position 400d-1 can be provided on (e.g.) an area facing the battery cell 110 and can extend to cross each other.

[0076] As an example, an inner groove part 410e-1 of the inner vent layer 400e-1 can be formed to extend in a straight line along the first direction (the X direction or a direction opposite to the X direction) on (e.g. on) an area facing the battery cell 110.

[0077] As an example, an inner groove part 410f-1 of the inner vent layer 400f-1 can be formed to extend along the first direction (the X direction or a direction opposite to the X direction) on (e.g. on) an area facing the battery cell 110, and to be spaced apart in the second direction (the Y direction or a direction opposite to the Y direction) to extend in three straight lines.

[0078] As an example, an inner groove part 410g-1 of the inner vent layer 400g-1 can be formed to have a section extending along the first direction (the X-direction or a direction opposite to the X-direction) on (e.g., on) an area facing (e.g., opposite) the battery cell 110, and two straight lines extending from opposite ends of the section extending diagonally along the first direction.

[0079] As an example, an inner groove part 410h-1 of the inner venting layer 400h-1 can be formed to extend along a section of an essentially rectangular perimeter with rounded corners on (e.g.) an area facing (e.g. opposite) the battery cell 110.

[0080] As an example, an inner groove part 410i-1 of the inner venting layer 400i-1 can be formed to extend in two straight lines that intersect each other perpendicularly in each area facing (e.g. opposite) the battery cell 110.

[0081] Furthermore, the forms of the inner venting layers 400c-1, 400d-1, 400e-1, 400f-1, 400g-1, 400h-1 and 400i-1, which are in Fig. 6 are also applied to the shapes of the outer venting layers 500, 500-1, 500a-1 and 500b-1 and the layer retaining frames 600, 600-1, 600-2, 600-3, 600a-3, 600b-3, 600-4, 600-5, 600-6 and 600-7, which are described below, based, for example, on the outer groove parts 510, 510-1, 510a-1 and 510b-1 or the layer retaining frames 600, 600-1, 600-2, 600-3, 600a-3, 600b-3, 600-4, 600-5, 600-6 and 600-7, which have shapes, which may differ from the shapes of the inner groove parts 410c-1, 410d-1, 410e-1, 410f-1, 410g-1, 410h-1 and 410i-1.

[0082] Fig. Figure 7 is a perspective view of components of a battery module, excluding the outer venting position, according to yet another embodiment of the present disclosure / invention. Fig. 8 is a vertical cross-sectional view of a battery module (which is the battery module of Fig. 7 may be) according to yet another embodiment of the present disclosure / invention.

[0083] With reference to Fig. 7 and Fig. 8. A battery module 100-2 according to an embodiment of the present disclosure / invention can further include a position-holding frame 600 in addition to the battery module 100 according to the embodiments described above. Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. 6.

[0084] Accordingly, for example, a description of the battery cell 110, the module housing 200, the module cover 300, the inner venting layer 400 and the outer venting layer 500 of the battery module 100-2 according to the embodiment of the present disclosure / invention can be derived from Fig. 7 and Fig. 8 the description of the battery module 100 according to the embodiment described above Fig. 1 to Fig. 2 or of the battery module 100-1 according to the embodiment described above in the present disclosure / invention Fig. 4 can be used.

[0085] The position-holding frame 600 can be arranged between the inner ventilation position 400 and the outer ventilation position 500 and can hold (e.g. support) the inner ventilation position 400 and the outer ventilation position 500.

[0086] The layer retaining frame 600 can have a communication hole (e.g., a connecting hole) 601 provided between the inner groove part 410 and the outer groove part 510. The layer retaining frame 600 can be formed to have a thickness greater than the thicknesses of the inner venting layer 400 and the outer venting layer 500, and can be formed from a material that has flame resistance and thermal insulation.

[0087] With this structure made of Fig. 7 and Fig. 8, since the position-holding frame 600 holds the inner vent layer 400 and the outer vent layer 500, the structural stability of the inner vent layer 400 and the outer vent layer 500 can be / be improved, and if a fire occurs in the battery cell 110, foreign substances (e.g. fragments) or a high-pressure fluid can exert pressure on the outer groove part 510 through the communication hole 601 if the inner groove part 410 is / becomes broken, and the outer groove part 510 can be broken.

[0088] Since the inner groove section 410 and the outer groove section 510 are broken in this way, foreign substances (e.g., fragments) or high-pressure fluid due to the fire can be vented to the outside of the battery module 100-2. The vented foreign substances (e.g., fragments) or the (vented) high-pressure fluid can rebound (e.g., be rebounded) by a pack cover and break an unbroken outer groove section 510, but even in this case, the inner groove section 410 can be prevented from breaking, so that a thermal runaway phenomenon inside the battery module 100-2 may not occur, and the safety of the battery module 100-2 may be improved.

[0089] In Fig. 7 and Fig. Figure 8 shows the inner groove part 410 and the outer groove part 510 having a thickness that is less than the thickness of a circumferential region, but an embodiment of the present disclosure / invention is not necessarily limited thereto, and the inner groove part 410 or the outer groove part 510 may have a cross-sectional shape (see, e.g., Figure 8). Fig. 6).

[0090] Fig. Figure 9 is a top view of a position-holding frame according to yet another embodiment of the present disclosure / invention. Fig. 10 is a vertical cross-sectional view of a position holding frame (which is the position holding frame made of Fig. 9 can be), an inner vent layer and an outer vent layer, which runs along a line AA' in Fig. 9 is taken.

[0091] With reference to Fig. 9 and Fig. 10. According to an embodiment of the present disclosure / invention, a position-holding frame 600-1 can, for example, have a shape that differs from the shape of the position-holding frame 600. Fig. 7 and Fig. 8 distinguishes.

[0092] The position-holding frame 600-1 can have a frame body area 602 and a frame holding area 603, which projects from the frame body area 602 in the direction of the inner ventilation position 400 and the outer ventilation position 500.

[0093] The frame holding area 603 can have a thickness greater than the thickness of the frame body area 602 in the third direction (the Z-direction or a direction opposite to the Z-direction). The frame holding area 603 can define a communication hole 601 while surrounding the communication hole 601.

[0094] The inner groove part 410 can be provided in a position where it is surrounded by the frame holding area 603, so that the inner venting layer 400 can be broken along the communication hole 601.

[0095] Furthermore, if the inner groove part 410 is broken, a broken section of the inner vent layer 400 may be introduced (e.g., inserted) into the communication hole 601 (e.g., it may penetrate into it), and accordingly, in order for a section of the outer vent layer 500 that touches (e.g., is in contact with) the communication hole 601 to be broken, the outer groove part 510 may be provided in a position where it is surrounded by the frame holding area 603.

[0096] If, for example, the inner vent layer 400, the layer retaining frame 600-1 and the outer vent layer 500 are viewed in a direction in which the inner vent layer 400, the layer retaining frame 600-1 and the outer vent layer 500 are stacked (e.g., the Z-direction), (then) the inner groove part 410 and the outer groove part 510 can be configured to be surrounded by the frame retaining area 603.

[0097] With this structure made of Fig. 9 and Fig. 10, since the thickness of the frame holding area 603 of the position holding frame 600-1 is greater than the thickness of the frame body area 602, the structural stability of the position holding frame 600-1, which is arranged around the communication hole 601, can be improved.

[0098] In Fig. 10 The inner groove part 410 and the outer groove part 510 are shown to have a thickness that is less than the thickness of a circumferential region, but an embodiment of the present disclosure / invention is not necessarily limited thereto, and the inner groove part 410 or the outer groove part 510 may have a cut shape.

[0099] Fig. Figure 11 is a vertical cross-sectional view of a position holding frame, an inner venting position and an outer venting position according to yet another embodiment of the present disclosure / invention.

[0100] Referring to Fig. 11. A position-holding frame 600-2 according to an embodiment of the present disclosure / invention can have a frame body area 602 and a frame holding area 603, which projects from the frame body area 602 in the direction of any of the inner venting layer 400 or the outer venting layer 500 and surrounds the communication hole 601, such that it has a thickness that is greater than the thickness of the frame body area 602.

[0101] The frame holding area 603 of the position holding frame 600-2, which is in Fig. Figure 11 is shown in such a way that it projects from the frame body area 602 only in the direction of the inner venting position 400, but an embodiment of the present disclosure / invention is not necessarily limited to this, and for example the position-holding frame 600-2 can project from the frame body area 602 only in the direction of the outer venting position 500.

[0102] If the inner vent layer 400, the layer retaining frame 600-2 and the outer vent layer 500 are viewed in a direction in which the inner vent layer 400, the layer retaining frame 600-2 and the outer vent layer 500 are stacked (e.g., the Z-direction), then the inner groove part 410 and the outer groove part 510 can be configured to be surrounded by the frame retaining area 603.

[0103] Even with this structure made up Fig. 11, since the thickness of the frame holding area 603 of the position holding frame 600-2 is greater than the thickness of the frame body area 602, the structural stability of the position holding frame 600-2, which is arranged around the communication hole 601, can be improved.

[0104] Also in Fig. 11 the inner groove part 410 and the outer groove part 510 are shown to have a thickness that is less than the thickness of a circumferential region, but an embodiment of the present disclosure / invention is not necessarily limited thereto, and for example the inner groove part 410 or the outer groove part 510 may have a cut shape.

[0105] Fig. 12 is a top view of a position holding frame according to yet another embodiment of the present disclosure / invention. Fig. 13 is a vertical cross-sectional view of a position holding frame (which is the position holding frame made of Fig. 12), an inner vent layer and an outer vent layer, which run along a line BB' in Fig. 12 has been taken.

[0106] Referring to Fig. 12 and Fig. 13. A position-holding frame 600-3 according to an embodiment of the present disclosure / invention can have a frame body area 602, which defines a communication hole 601, and a frame cross area (e.g. a frame crossing area) 604, which is connected to the frame body area 602 and extends in a direction that crosses (e.g. crosses, e.g. traverses) the communication hole 601.

[0107] The frame body area 602 can touch (e.g. be in contact with) the inner ventilation layer 400 and the outer ventilation layer 500 and can hold (e.g. support, e.g. carry) the inner ventilation layer 400 and the outer ventilation layer 500.

[0108] The frame cross-section 604 can be arranged on (e.g., on) one side of a position where the outer groove part 510 of the outer vent layer 500 is formed, in the third direction (a direction opposite to a Z-direction). The frame cross-section 604 can extend along the outer groove part 510 of the outer vent layer 500.

[0109] The frame cross section 604 can hold (e.g., support, bear) the outer groove part 510 of the outer vent layer 500. Since the frame cross section 604 holds the outer groove part 510, it prevents the outer groove part 510 from being broken by external pressure in the direction of the communication hole 601.

[0110] With this structure made of Fig. 12 and Fig. 13, if a fire occurs in battery cell 110 (see Fig. 4), (then) the inner groove part 410 can be broken in the direction of the communication hole 601, and since / if the outer groove part 510 of the outer venting layer 500 is / becomes broken, foreign substances (e.g. fragments) or a high-pressure fluid generated by the fire can be vented. Furthermore, it may be possible to prevent the unbroken outer groove part 510 from being broken by external pressure in the direction of the communication hole 601.

[0111] In Fig. 12 and Fig. 13 The inner groove part 410 and the outer groove part 510 are shown to have a thickness that is less than the thickness of a circumferential region, but an embodiment of the present disclosure / invention is not necessarily limited thereto, and for example the inner groove part 410 or the outer groove part 510 may have a cut shape.

[0112] Fig. Figure 14 shows top views of position-holding frames according to various embodiments of the present disclosure / invention.

[0113] With reference to Fig. 14 For example, a form of a frame cross-section 604 of each of position-holding frames 600a-3 and 600b-3 according to other embodiments of the present disclosure / invention can be derived from a form of the frame cross-section 604 of the position-holding frame 600-3. Fig. 12 distinguish.

[0114] As an example, a direction in which the frame cross-section 604 of the position-holding frame 600-3 extends (see e.g. Fig. 12), a longitudinal direction of the communication hole 601, but a direction in which the frame transverse area 604 of the position-holding frame 600a-3 extends (see e.g. Fig. 14), can be a direction perpendicular to the longitudinal direction of communication hole 601.

[0115] Furthermore, as in Fig. Figure 14 shows that the frame cross-section 604 of the position-holding frame 600b-3 extends in a longitudinal direction of the communication hole 601 and in a direction that is perpendicular to the longitudinal direction of the communication hole 601.

[0116] For a description of configurations other than these structures from Fig. 12- Fig. 14 The above descriptions can be used, and the frame cross-section 604 of the position-holding frames 600-3, 600a-3 and 600b-3 can be selectively determined (e.g., fixed) depending on a position and shape of the outer groove part 510.

[0117] Fig. Figure 15 is a top view of a position-holding frame according to yet another embodiment of the present disclosure / invention. Fig. 16 is a vertical cross-sectional view of a position holding frame (which is the position holding frame made of Fig. 15) and an external ventilation layer, which runs along a line CC' in Fig. 15 has been taken.

[0118] With reference to Fig. 15 and Fig. 16. A position-holding frame 600-4 according to an embodiment of the present disclosure / invention can serve as the inner venting position 400 without having the inner venting position 400 (see Fig. 2).

[0119] The layer support frame 600-4 can be designed to have a thickness greater than the thickness of the outer vent layer 500, and can be made of a material that has flame resistance and thermal insulation.

[0120] The position-holding frame 600-4 can be arranged on (e.g., on) one side of the outer vent layer 500 in the third direction (a direction opposite to a Z-direction) and can be positioned between the outer vent layer 500 and the battery cell 110. The position-holding frame 600-4 can touch (e.g., be in contact with) the outer vent layer 500 and the battery cell 110. With this configuration of Fig. 15 and Fig. 16. The structural stability of the position support frame 600-4 and the outer ventilation position 500 can be improved.

[0121] The position-holding frame 600-4 can be provided on (e.g., on) an area facing (e.g., opposite) the battery cell 110 and can define a frame-groove part 610 which has a cut shape (see, e.g., Fig. 6 for other potential / possible cut shapes for other embodiments). The frame groove part 610 can extend along a section of an elliptical circumference on (e.g. on) the frame body area 602.

[0122] The outer venting layer 500 can be arranged on (e.g., on) a side opposite (to the Z-direction) of the battery cell 110 in the third direction and can be held (e.g., supported) by means of the layer-holding frame 600-4. The outer venting layer 500 can be formed on (e.g., on) an area facing (e.g., opposite) the battery cell and can have an outer groove portion 510 that has a thickness less than the thickness of a circumferential area or that has a cut shape. Fig. 16 the outer groove part 510 is shown to have a thickness that is less than a thickness of a circumferential region, but the outer groove part 510 is not necessarily limited to this and may be a part having a cut shape.

[0123] If the position retaining frame 600-4 and the outer venting layer 500 are viewed in a direction in which the position retaining frame 600-4 and the outer venting layer 500 are stacked (e.g., the Z-direction), the outer groove part 510 can be provided in a position where it is surrounded by the frame groove part 610.

[0124] With this structure, if a fire occurs in battery cell 110 (see Fig. 4), pressure can be exerted on the outer groove part 510 if / when an area surrounded by the frame groove part 610 in the layer retaining frame 600-4 is / becomes broken, so that foreign substances (e.g. fragments) or a high-pressure fluid due to the fire can be vented to an outside of the outer vent layer 500.

[0125] In contrast, even if pressure is exerted on an unbroken outer groove part 510 by foreign substances (e.g. fragments) or a high-pressure fluid that has been vented and rebounded by means of a pack cover, and the outer groove part 510 is broken (e.g. on an adjacent battery cell), it is possible that no direct pressure is exerted on the frame groove part 610 of the position-holding frame 600-4, so that foreign substances (e.g. fragments) or a high-pressure fluid cannot be introduced (e.g., introduced) into the battery cell 110, in which no fire has occurred, through the position-holding frame 600-4.

[0126] In one embodiment, for example, the outer groove portion 510 can extend to surround an outer venting area 520-1, which is an area on (e.g., at) the outer venting layer 500 (see Fig. 5A), and in this case the frame groove part 610 can extend to surround an area on (e.g. on) the position holding frame 600-4, the extent of which is greater than an extent of the outer venting area 520-1.

[0127] In Fig. 15 and Fig. In Figure 16, which is described above, the frame-groove part 610 is shown to have only one cross-sectional shape, but the shape of the frame-groove part 610 is not necessarily limited to this and can be a part having a thickness less than the thickness of a circumferential region, as is shown below, for example, with reference to Fig. 17 described.

[0128] Fig. Figure 17 is a vertical cross-sectional view of a position holding frame and an outer venting position according to yet another embodiment of the present disclosure / invention.

[0129] With reference to Fig. 17. In contrast to the position holding frame 600-4, a frame groove part 610 may have a thickness that is less than the thickness of a circumferential area.

[0130] For a description of the structure of the position-holding frame 600-5, with the exception of a shape of the frame-groove part 610, the description of the position-holding frame 600-4, which relates to Fig. 15 and Fig. As described in section 16, they can be used.

[0131] Fig. Figure 18 is a vertical cross-sectional view of a position-holding frame and an inner venting position according to yet another embodiment of the present disclosure / invention.

[0132] With reference to Fig. 18. A position-holding frame 600-6 according to an embodiment of the present disclosure / invention can instead serve as the outer venting position 500 without having the outer venting position 500 (see Fig. 2).

[0133] The layer support frame 600-6 can be designed to have a thickness greater than the thickness of the inner venting layer 400, and can be made of a material that has flame resistance and thermal insulation.

[0134] The position-holding frame 600-6 according to an embodiment of the present disclosure / invention from Fig. 18 can be removed from the position holding frame 600-4 Fig. 16 differ in that it can touch the inner ventilation layer 400.

[0135] For example, the position holding frame 600-4 or 600-5 can be used more precisely (see Fig. 16 and Fig. 17) Hold the outer ventilation layer 500 instead of the inner ventilation layer 400 (e.g. support, e.g. carry), and the layer-holding frame 600-6 from Fig. 18 can touch the inner vent layer 400 instead of the outer vent layer 500 (e.g., be in contact with it).

[0136] As in Fig. 18 shows that if the position-holding frame 600-6 touches the inner venting layer 400 (e.g., is in contact with it), the structural stability of the position-holding frame 600-6 and the inner venting layer 400 can be improved.

[0137] The position-holding frame 600-6 can be arranged on (e.g. on) an opposite (e.g. opposite) side, on (e.g. on) the battery cell 110 (see Fig. 2) is provided, with regard to the inner ventilation layer 400. The layer-holding frame 600-6 can have a frame-groove part 610 which has a cut shape.

[0138] The frame groove part 610 can extend along a section of an elliptical circumference on (e.g. on) the frame body area 602.

[0139] The inner venting layer 400 can be arranged on (e.g. on) an opposite (e.g. opposite) side (of the Z-direction) of the battery cell 110 in the third direction and can be attached to the layer holding frame 600-6 (e.g. glued to it) or touch it (e.g. be in contact with it).

[0140] The inner venting layer 400 can be formed on (e.g., on) an area facing (e.g., opposite) the battery cell 110 and can have an inner groove portion 410 that has a thickness less than the thickness of a circumferential area, or that has a cut shape. Fig. Figure 18 shows the inner groove part 410 having only one cross-sectional shape, but the inner groove part 410 is not necessarily limited to this and can, for example, be a part having a thickness that is less than the thickness of a circumferential region.

[0141] If the inner vent layer 400 and the layer retaining frame 600-6 are viewed in a direction in which the inner vent layer 400 and the layer retaining frame 600-6 are stacked (e.g., the Z-direction), the frame groove part 610 can be provided in a position where it is surrounded by the inner groove part 410.

[0142] With this structure made of Fig. 18, if a fire occurs in the battery cell 110, (then) an area of ​​the inner venting layer 400, surrounded by the inner groove part 410, may be broken, and accordingly an area of ​​the layer retaining frame 600-6, surrounded by the frame groove part 610, may be broken, so that foreign substances (e.g. fragments) or a high-pressure fluid generated by the fire may be vented to an outside of the layer retaining frame 600-6.

[0143] In contrast, even if the vented foreign substances (e.g. fragments) or the (vented) high-pressure fluid rebound (e.g., are rebounded) by means of the pack cover and contact (e.g., touch) the layer-holding frame 600-6, it is possible that no direct pressure is exerted on the unbroken frame groove part 610, so that it is possible that foreign substances (e.g., fragments) or a high-pressure fluid have not been introduced (e.g., brought into) the battery cell 110, in which no fire has occurred, through the inner venting layer 400 (e.g., do not penetrate there).

[0144] The inner groove part 410 can extend to surround an inner venting area 420-1, which is an area on (e.g., at) the inner venting layer 400 (see Fig. 5A), and in this case the frame groove part 610 can extend to surround an area on (e.g. on) the position holding frame 600-6, the extent of which is smaller than an extent of the outer venting area 520-1.

[0145] In Fig. 18 the frame-groove part 610 is shown to have only one cut shape, but the shape of the frame-groove part 610 is not necessarily limited to this and can, for example, be a part having a thickness that is less than the thickness of a circumferential region.

[0146] Fig. 19 a vertical cross-sectional view of a position holding frame and an inner venting position according to yet another embodiment of the present disclosure / invention.

[0147] With reference to Fig. 19. A position holding frame 600-7 can be used in contrast to the position holding frame 600-6. Fig. 18 have a frame groove part 610 which has a thickness that is less than a thickness of a circumferential area.

[0148] For a description of the structure of the position holding frame 600-7 from Fig. 19 with the exception of one form of the frame groove part 610, the description of the position holding frame 600-6, which is in Fig. As described in section 18, they can be used.

[0149] The retaining frame 600-7 can have a separate area that contacts (e.g., is in contact with) the frame groove part 610 and the inner vent layer 400 on one side (opposite a Z-direction) of a section surrounded by the frame groove part 610 in a third direction. This area can enhance the structural stability of the frame groove part 610 and the inner vent layer 400.

[0150] The inner ventilation position 400 or the outer ventilation position 500, which are described above Fig. 15, Fig. 16, Fig. 17, Fig. 18 to Fig. 19 described, may be referred to in the claims as a “venting position”, the inner groove part 410 or the outer groove part 510 may be referred to in the claims as a “groove part”, and the inner venting area 420 or the outer venting area 520 may be referred to in the claims as a “venting area”.

[0151] Furthermore, for a description of the shapes of the inner groove part 410, the frame groove part 610 and the outer groove part 510, which are in Fig. 15, Fig. 16, Fig. 17, Fig. 18 to Fig. 19 are shown, the description of the forms that are in Fig. 5A to 5C and Fig. The 6 figures shown are used.

[0152] Fig. Figure 20 is a perspective view of a battery module according to yet another embodiment of the present disclosure / invention.

[0153] With reference to Fig. In contrast to the structures in which the battery cell 110 is configured as a prismatic cell, as in Fig. 1 and Fig. As shown in Figure 7, the internal structure of the module housing 200 may be different, since the battery cell 110 of the battery module 100-8 is configured as a pouch cell (e.g. as a pouch cell, from English “pouch cell”).

[0154] For descriptions of configurations other than these, the descriptions referenced in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18 to Fig. 19 above are used with regard to other embodiment variations, which may be applied, for example, to a different module housing configuration and / or a different battery module configuration and / or a different battery cell configuration.

[0155] According to one embodiment of the present disclosure / invention, if a fire occurs in a battery cell, foreign substances (e.g., fragments) or a high-pressure fluid may be vented to an outside of the battery module due to the fire, and it may be prevented that the vented foreign substances (e.g., fragments) or the (vented) high-pressure fluid (e.g., from an adjacent broken battery cell) rebound and enter a battery cell in which no fire has occurred.

[0156] According to one embodiment of the present disclosure / invention, since the position-holding frame is provided between the inner venting layer and the outer venting layer, the structural stability of the inner venting layer, the outer venting layer and the position-holding frame can be improved.

[0157] According to one embodiment of the present disclosure / invention, since the position-holding frame can serve as the inner venting layer or the outer venting layer, foreign substances (e.g. fragments) or a high-pressure fluid due to a fire can only be vented to an outside of the battery module by means of the structure of the position-holding frame and the inner venting layer or the position-holding frame and the outer venting layer, and it can be prevented that the vented foreign substances (e.g. fragments) or the (vented) high-pressure fluid (e.g. from an adjacent broken battery cell) are rebounded and introduced into a battery cell in which no fire has occurred.

[0158] A multitude of embodiments, effects and advantages, which are understood directly or indirectly through the present disclosure / invention, may be provided.

[0159] The foregoing description is merely illustrative of the technical ideas disclosed therein, and various modifications and variations may be made by a person skilled in the art in the field to which the embodiments disclosed in the description belong, without deviating from the scope and essential features of the embodiments disclosed in the description.

[0160] Accordingly, the exemplary embodiments of the present disclosure / invention are intended not necessarily to limit, but to illustrate, the technical ideas of the present disclosure / invention, and the scope and content of the present disclosure / invention are not necessarily limited by the foregoing exemplary embodiments. The scope of protection of the present disclosure / invention can be interpreted by the accompanying claims, and claims of a similar nature can be interpreted as being included in the scope of the present disclosure / invention. REFERENCE MARK LIST 100, 100-1, 100-2, 100-8 battery module 110 battery cells 114 Surface printing element 200 module housings 210 module base plate 220 first side panel 230 second side panel 300 module coverage 400, 400-1, 400a-1, 400b-1, 400c-1, 400d-1, 400e-1, 400f-1, 400g-1, 400h-1, 400i-1 inner venting position 410, 410-1, 410a-1, 410b-1, 410c-1, 410d-1, 410e-1, 410f-1, 410g-1, 410h-1, 410i-1, 410-2 inner groove part 420-1, 420a-1 inner ventilation area 500, 500-1, 500a-1, 500b-1 external ventilation position 510, 510-1, 510a-1, 510b-1 outer groove part 520 external ventilation area 600, 600-1, 600-2, 600-3, 600a-3, 600b-3, 600-4, 600-5, 600-6, 600-7 Position-holding frame 601 Communication gap 602 Frame body area 603 Frame holding area 604 Frame cross area 610 Frame groove part

Claims

[1] Battery module (100) comprising: a plurality of stacked battery cells (110) that are stacked; an inner venting layer (400) arranged on one side of the battery cells (110), wherein the inner venting layer (400) has an inner groove portion (410) having a thickness less than the thickness of a circumferential region, or having a cut shape in a region facing the battery cells (110); and an outer venting layer (500) arranged such that the inner venting layer (400) is between the battery cells (110) and the outer venting layer (500), wherein the outer venting layer (500) has an outer groove portion (410) having a thickness less than the thickness of a circumferential region, or having a cut shape. [2] Battery module (100) according to claim 1, wherein, when viewed in a direction in which the inner vent layer (400) and the outer vent layer (500) are stacked, the outer groove part (410) is configured to be surrounded by the inner groove part (410). [3] Battery module (100) according to claim 1 or 2, wherein the inner groove portion (410) extends to surround an inner venting area (420-1) at the inner venting position (400), and wherein the outer groove portion (410) is configured to surround an outer venting area (520) at the outer venting position (500), wherein the outer venting area (520) has an extent that is smaller than an extent of the inner venting area (420-1). [4] Battery module (100) according to any one of claims 1 to 3, wherein the inner vent layer (400) has a pair of inner groove parts (410) configured to extend parallel to each other, and wherein, when viewed in a direction in which the inner vent layer (400) and the outer vent layer (500) are stacked, the outer groove part (410) is arranged between the pair of inner groove parts (410-2). [5] Battery module (100) according to any one of claims 1 to 4, which further comprises a position-holding frame (600) arranged between the inner venting layer (400) and the outer venting layer (500), wherein the position-holding frame (600) is configured to hold the inner venting layer (400) and the outer venting layer (500). [6] Battery module (100) according to claim 5, wherein the position holding frame (600) has a communication hole (601) arranged between the inner groove part (410) and the outer groove part (510). [7] Battery module (100) according to claim 6, wherein the position-holding frame (600) comprises: a frame body area (602); and a frame holding area (603) which projects from the frame body area (602) in the direction of the inner venting layer (400) or the outer venting layer (500), wherein the frame holding area (603) has a thickness that is greater than the thickness of the frame body area (602), and surrounds the communication hole (601). [8] Battery module (100) according to claim 7, wherein, when viewed in a direction in which the inner vent layer (400), the layer holding frame (600) and the outer vent layer (500) are stacked, the inner groove part (410) and the outer groove part (510) are configured to be surrounded by the frame holding area (603). [9] Battery module (100) according to claim 7 or 8, wherein the position-holding frame (600) comprises: a frame body area (602) which limits the communication hole (601); and a frame cross section (604) that is connected to the frame body section (602) and extends in a direction that crosses the communication hole (601). [10] Battery module (100) according to claim 9, wherein the frame transverse area (604) extends along the outer vent layer (500) on an outer vent layer side and is at least partially aligned with the outer groove part (510). [11] Battery module (100) according to any one of claims 1 to 10, wherein the inner venting layer (400) and the outer venting layer (500) comprise a mica material. [12] Battery module (100) comprising: a plurality of stacked battery cells (110) that are stacked; a vent layer (400, 500) arranged on one side of the battery cells (110), wherein the vent layer (400, 500) has a groove portion (410, 510) having a thickness less than the thickness of a circumferential region, or having a cut shape in a region facing the battery cells (110); and a position-holding frame (600) arranged between the venting layer (400, 500) and the battery cells (110), or arranged on a first side opposite a second side on which the battery cells (110) are provided with respect to the venting layer (400, 500), and wherein the position-holding frame has a frame-groove part (610) having a thickness less than the thickness of a circumferential region, or having a cut shape. [13] Battery module (100) according to claim 12, wherein the groove part (410, 510) extends to surround a venting area (420-1, 520) on the venting layer (400, 500), and wherein the frame groove part (610) extends to surround an area having an extent that differs from an extent of the venting area (420, 520) on the layer holding frame (600). [14] Battery module (100) according to claim 12 or 13, wherein the position holding frame (600) contacts the venting layer (400, 500) or the battery cells (110). [15] Battery module (100) according to any one of claims 12 to 14, wherein the vent layer (400, 500) comprises a mica material, and wherein the layer retaining frame (600) is configured to have a thickness greater than the thickness of the vent layer (400, 500), wherein the layer retaining frame (600) comprises a layer retaining frame material configured to have flame resistance and to provide thermal insulation. [16] Battery module (100) according to any one of claims 12 to 15, wherein the venting layer (400, 500) is an inner venting layer (400); wherein the battery module (100) further comprises an external venting layer (500); wherein the position holding frame (600) is between the inner venting position (400) and the outer venting position (500); wherein the inner venting layer (400) is between the layer support frame (600) and the battery cells (110); wherein the outer venting layer (500) has an outer groove portion (510), wherein the outer groove portion (510) has a thickness that is less than the thickness of a circumferential region outside the outer groove portion (510), or has a cut shape; and wherein the position holding frame (600) has a communication hole (601) which is arranged between the inner venting layer (400) and the outer venting layer (500), wherein the communication hole (601) is arranged on the outer groove part (510). [17] Battery module (100) according to one of claims 12 to 15, wherein the venting layer (400, 500) is an outer venting layer (500); wherein the battery module (100) further comprises an internal venting layer (400); wherein the position holding frame (600) is between the inner venting position (400) and the outer venting position (500); wherein the inner venting layer (400) is between the layer support frame (600) and the battery cells (110); wherein the inner venting layer (400) has an inner groove portion (410), wherein the inner groove portion (410) has a thickness that is less than the thickness of a circumferential region outside the inner groove portion (410), or a cut shape in a region facing the battery cells (110); and wherein the position holding frame (600) has a communication hole (601) which is arranged between the inner venting layer (400) and the outer venting layer (500), wherein the communication hole (601) is arranged on the inner groove part (410). [18] Method for controlling a fire of a battery module (100) which has: Providing the battery module (100), wherein the battery module (100) comprises: a first battery cell (110); a second battery cell (110) stacked adjacent to the first battery cell (110); a vent layer (400, 500) arranged on a first side of the first and second battery cells (110), the vent layer (400, 500) comprising a set of vent layer groove parts (410, 510), each of the vent layer groove parts (410, 510) having at least one vent layer groove part thickness that is less than a vent layer circumferential area thickness of a vent layer circumferential area outside the vent layer groove part (410, 510), or a vent layer groove part cut shape in an area facing the first and second battery cells (110); and a position-holding frame (600), wherein the position-holding frame (600) is arranged between the venting layer (400, 500) and the first and second battery cells (110), or the venting layer (400, 500) is arranged between the position-holding frame (600) and the first and second battery cells (110), and wherein the position-holding frame (600) has a set of frame-groove parts (610), each of the frame-groove parts (610) having at least one frame-groove part thickness that is less than a frame-groove part perimeter area thickness of a frame-groove part perimeter area outside the frame-groove part (610), or a frame-groove part cut shape; as a result of a fire in the first battery cell (110), breaking of a first vent layer groove part (410-2, 510) of the vent layer groove parts (410-2, 510) and a first frame groove part (610) of the frame groove parts (610) arranged on the first battery cell (110) outwards in order to vent pressure and deposits of the first battery cell (110) due to the fire outwards away from the first battery cell (110) via the first vent layer groove part (610) and the first frame groove part (610) arranged on the first battery cell (110); and Non-breakage of a second vent layer groove part (410-2, 510) of the vent layer groove parts (410-2, 510) and of a second frame groove part (610) of the frame groove parts (610) arranged on the second battery cell (110) by means of the pressure and deposits from the fire of the first battery cell (110). [19] Method according to claim 18, which further comprises: thermally insulating the second battery cell (110) from the fire of the first battery cell (110) by means of the venting layer (400, 500) and the layer holding frame (600) on the second battery cell (110). [20] Method according to claim 18 or 19, wherein the venting layer (400, 500) is an outer venting layer (500); wherein the battery module (100) further comprises an internal venting layer (400); wherein the position holding frame (600) is between the inner venting position (400) and the outer venting position (500); wherein the inner venting layer (400) is between the layer support frame (600) and the battery cells (110); wherein the inner venting layer (400) has a set of inner groove parts (410), each of the inner groove parts (410) having at least one inner groove part thickness that is less than an inner venting layer perimeter area thickness of an inner venting layer perimeter area outside the inner groove part (410), or an inner groove part cut shape in an area facing the first and second battery cells (110); wherein the position-holding frame (600) has a first communication hole (601) arranged between the inner vent layer (400) and the outer vent layer (500), the first communication hole (601) being arranged on a first inner groove portion (410) of the inner groove portions (410) arranged on the first battery cell (110); and wherein the method further comprises: as a result of the fire in the first battery cell (110), breaking the first inner groove part (410) arranged on the first battery cell (110) outwards in order to vent the pressure and deposits of the first battery cell (110) due to the fire outwards away from the first battery cell (110) via the first inner groove part (410) and via the first communication hole (601).

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