Battery module and battery pack and vehicle comprising same

Abstract

A battery module, according to one embodiment of the present invention, comprises: a plurality of battery cells; a module housing configured to accommodate the plurality of battery cells; and a resin portion provided in an upper region of an internal space of the module housing, the resin portion being configured to surround outer circumferential surfaces of the plurality of battery cells and to guide gas discharged from upper portions of the battery cells toward the outside of the module housing.

Description

Battery module and battery pack including the same and automobile

[0001] The present invention relates to a battery module, a battery pack including the same, and an automobile.

[0002] Unlike primary batteries, which cannot be recharged, secondary batteries refer to batteries capable of charging and discharging, and are applied not only to portable devices but also to electric vehicles (EVs) and hybrid electric vehicles (HEVs) driven by electric power sources.

[0003] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, or unit battery cells, is approximately 2.5V to 4.6V. Therefore, if a higher output voltage is required, a battery pack is formed by connecting multiple battery cells in series. Additionally, a battery pack is formed by connecting multiple battery cells in parallel depending on the charge / discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack can be varied depending on the required output voltage or charge / discharge capacity.

[0004] When configuring a battery pack by connecting multiple battery cells in series or parallel, it is common practice to first configure a battery module consisting of at least one battery cell, preferably multiple battery cells, and then use at least one such battery module to configure the battery pack by adding other components. Here, a battery module refers to a component in which multiple battery cells are connected in series or parallel, and a battery pack refers to a component in which multiple battery modules are connected in series or parallel to increase capacity and output.

[0005] Meanwhile, in cylindrical battery cells, it is common for the notch to rupture and the vent to burst when a large amount of gas is generated internally, releasing gas and / or flames to the outside. At this time, these gases and / or flames affect nearby battery cells, causing thermal propagation. Therefore, it is necessary to prevent a thermal event in one battery cell from propagating to adjacent battery cells.

[0006] The present invention aims to discharge gas and / or flame in a desired direction from a battery cell.

[0007] Specifically, the present invention aims to prevent thermal events from propagating to adjacent battery cells by providing a resin portion on the upper part of a battery cell so that gas and / or flame are guided directly out of the battery module.

[0008] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description of the invention below.

[0009] A battery module according to an embodiment of the present invention for solving the above-described problem comprises: a plurality of battery cells; a module housing configured to accommodate the battery cells; and a resin portion provided in an upper region of the internal space of the module housing, configured to surround the outer surface of the plurality of battery cells, and configured to induce gas discharged from the upper part of the battery cells to be discharged to the outside of the module housing.

[0010] In one aspect of the present invention, the venting portion of the battery cell may be positioned to face upward within the battery module.

[0011] In another aspect of the present invention, the upper cover of the module housing may be provided with at least one venting hole.

[0012] Preferably, the resin portion may include a gas exhaust portion that penetrates in the height direction of the battery module and has a shape that aligns with the surface of the battery cell.

[0013] More preferably, the gas discharge portion may be configured to have a flow path shape.

[0014] In one aspect of the present invention, at least a portion of the battery cell may be accommodated within the gas discharge portion of the resin portion.

[0015] In another aspect of the present invention, the upper portion of the battery cell may be configured to be located in the region between the upper surface and the lower surface of the resin portion.

[0016] Preferably, a venting space may be formed between the gas discharge section and the upper cover.

[0017] In another aspect of the present invention, the gas discharge portion may be covered in at least a portion by the upper cover.

[0018] In one aspect of the present invention, the gas discharge portion may be configured to be in communication with the venting hole.

[0019] In another aspect of the present invention, a battery module characterized in that the gas discharge portion and the venting hole have a first region configured to communicate with each other.

[0020] In another aspect of the present invention, a battery module characterized in that the gas discharge portion and the venting hole have a second region configured to overlap each other.

[0021] In one aspect of the present invention, the battery module may include a resin support member that supports the resin member from below.

[0022] Meanwhile, the present invention provides a battery pack comprising at least one battery cell according to the above-described embodiment as a battery pack.

[0023] In addition, the present invention provides a vehicle comprising at least one battery pack according to the above-described embodiment.

[0024] According to the present invention, gas and / or flame can be discharged in a desired direction from a battery cell.

[0025] Specifically, according to the present invention, by providing a resin portion on the upper part of a battery cell so that gas and / or flame are guided directly out of the battery module, the propagation of thermal events to adjacent battery cells can be effectively prevented.

[0026] However, the effects obtainable through the present invention are not limited to those described above, and other unmentioned technical effects will be clearly understood by a person skilled in the art from the description of the invention below.

[0027] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0028] FIG. 1 is a drawing for illustrating a battery module according to one embodiment of the present invention.

[0029] Figure 2 is an exploded perspective view of Figure 1.

[0030] FIG. 3 is a drawing for explaining a battery cell included in a battery module according to one embodiment of the present invention.

[0031] FIG. 4 is a drawing for explaining the internal structure of a battery module according to one embodiment of the present invention.

[0032] FIG. 5 is a top view of a battery module according to one embodiment of the present invention.

[0033] FIG. 6 is a drawing for explaining a battery pack including the battery module of FIG. 1.

[0034] Figure 7 is a drawing for explaining a vehicle including the battery pack of Figure 6.

[0035] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid the present invention being interpreted ambiguously. Throughout the specification, like reference numerals refer to like components.

[0036] In drawings, thicknesses may be enlarged to clearly represent multiple layers and regions. Throughout the specification, the same reference numerals are used for similar parts. When a part such as a layer, film, region, or plate is described as being "above" another part, this includes not only cases where it is "immediately above" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately above" another part, it may mean that there is no other part in between. Furthermore, when a part such as a layer, film, region, or plate is described as being "below" another part, this includes not only cases where it is "immediately below" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately below" another part, it may mean that there is no other part in between.

[0037]

[0038] FIG. 1 is a drawing for explaining a battery module (10) according to one embodiment of the present invention, and FIG. 2 is an exploded perspective view of FIG. 1.

[0039] Referring to FIGS. 1 and 2, a battery module (10) according to the present invention includes a battery cell (100), a module housing (200), and a resin part (300).

[0040] FIG. 3 is a drawing for explaining a battery cell (100) according to an embodiment of the present invention. A battery module (10) according to the present invention may include a plurality of battery cells (100).

[0041] Referring to FIG. 3, the battery cell (100) may be a secondary battery, for example, a cylindrical battery cell (100). However, this does not limit the type of the battery cell (100), and other types of battery cells (100), such as pouch-type cells or prismatic cells, may also be used in the battery module (10) of the present invention. The battery cell (100) of the present invention can be applied without restrictions on the cell form-factor.

[0042] Hereinafter, as illustrated in FIG. 3, the case where the battery cell (100) is a cylindrical cell will be described as an example. Referring to FIG. 3, the battery cell (100) includes an electrode assembly, a battery housing (20), and a top cap (30).

[0043] The electrode assembly comprises a first electrode tab and a second electrode tab. Specifically, the electrode assembly comprises a first electrode and a second electrode and a separator interposed between them. The electrode assembly has a structure in which the first electrode and the second electrode and the separator interposed between them are wound around a winding axis with the separator interposed between them, thereby defining a core and an outer surface. That is, the electrode assembly applied to the present invention may be a jelly-roll type electrode assembly. In this case, an additional separator may be provided on the outer surface of the electrode assembly to provide insulation from the battery housing (20). The electrode assembly may have a winding structure well known in the art without limitation. Meanwhile, in the present invention, the positive active material coated on the positive plate and the negative active material coated on the negative plate may be used without limitation as long as they are active materials known in the art.

[0044] Referring to FIGS. 1 and 2, the battery housing (20) is a roughly cylindrical receptacle with an opening formed on one side and is made of a conductive metal material. The side of the battery housing (20) and the bottom surface located opposite the opening are generally formed integrally. That is, the battery housing (20) generally has an open top in the height direction and a closed bottom. The bottom surface of the battery housing (20) may have a roughly flat shape. The battery housing (20) accommodates an electrode assembly through the opening formed on one side in the height direction. The battery housing (20) may also accommodate an electrolyte through the opening.

[0045] The battery housing (20) may have a beading portion formed at an end adjacent to an opening provided at the top of the battery housing (20). The battery housing (20) may further have a crimping portion formed on the beading portion. The beading portion has a shape in which the outer circumference of the battery housing (20) is recessed to a predetermined depth. More specifically, the beading portion may have a shape in which it is recessed inward in the area between an opening formed on one side of the battery housing (20) and a gas discharge portion (300H) that accommodates an electrode assembly. The beading portion is formed on the upper part of the electrode assembly. The inner diameter of the battery housing (20) in the area where the beading portion is formed is formed to be smaller than the diameter of the electrode assembly. The beading portion provides a support surface on which a top cap (30) can be seated. Additionally, the beading portion may provide a support surface on which at least a portion of the edge circumference of a current collector can be seated and coupled. That is, at least a portion of the edge perimeter of the current collector of the present invention and / or the edge perimeter of the top cap (30) may be seated on the upper surface of the beading portion. In order to stably support at least a portion of the edge perimeter of the current collector and / or the edge perimeter of the top cap (30), the upper surface of the beading portion may have a shape that extends along a direction approximately parallel to the lower surface of the battery housing (20), that is, along a direction approximately perpendicular to the side wall of the battery housing (20).

[0046] Referring to FIG. 3, the top cap (30) may have a venting portion formed to prevent an increase in internal pressure caused by gas generated inside the battery housing (20). The venting portion may be configured to break when the internal pressure of the battery housing (20) increases above a certain level. For example, the venting portion may be formed in a part of the top cap (30) and may be a structurally weaker area than the surrounding area so that it can easily break when internal pressure is applied. The venting portion may be, for example, an area having a thinner thickness compared to the surrounding area.

[0047] That is, for some reason, a thermal event may occur inside the battery cell (100) and venting gas may be generated, and the pressure inside the battery housing (20) may increase due to the venting gas. At this time, since the venting section corresponds to a structurally weaker area than the surrounding area so that it can easily rupture when the internal pressure of the battery cell (100) increases, rupture may occur in the venting section when venting gas is generated.

[0048] In one aspect of the present invention, the venting portion of the battery cell (100) may be positioned to face upward within the battery module (10). Accordingly, when venting occurs, the gas discharged from the venting portion may be discharged upward toward the battery module (10).

[0049] At this time, the venting portion may be configured to form a roughly circular closed loop. Accordingly, when venting gas is ejected from inside the battery cell (100) and the top cap (30) is subjected to upward internal pressure, the venting portion may break, and the inner region of the circular closed loop of the top cap (30) may be torn off. Accordingly, smooth venting can be achieved.

[0050]

[0051] Referring to FIGS. 1 and 2, the module housing (200) may be configured to accommodate the battery cell (100). Specifically, the module housing (200) may include a base plate (210), a side plate (220), and an upper cover (230).

[0052] The base plate (210) may be configured to have a roughly plate shape extending in the horizontal direction. The side plate (220) may be configured to have a roughly plate shape extending in the vertical direction. In this case, for example, the base plate (210) and the side plate (220) may be combined to form a lower housing. In this case, the base plate (210) and the side plate (220) may be configured to be detachably connected to each other. Alternatively, the base plate (210) and the side plate (220) may be configured as separate components.

[0053] Referring to FIG. 2, the upper cover (230) may be positioned on the upper part of the lower housing. The upper cover (230) may be configured to cover the upper part of the battery cell (100). For example, the upper cover (230) may be configured to have a plate shape that extends approximately horizontally. In one aspect of the present invention, the upper cover (230) may be configured to be detachably connected to the lower housing.

[0054]

[0055] In another aspect of the present invention, the upper cover (230) may be configured to vent gas. For example, the upper cover (230) may be provided with at least one venting hole (230H).

[0056] The venting hole (230H) may be configured to discharge venting gas. That is, the venting hole (230H) may be configured to have a hole shape that penetrates the upper cover (230) in the vertical direction. The venting hole (230H) may be provided in a shape that extends long in one direction, for example, as shown in FIG. 1. However, the shape of the venting hole (230H) is not limited to this. Meanwhile, the venting hole (230H) may be provided in an area adjacent to the venting portion of the battery cell (100). For example, in a structure where the venting portion of the battery cell (100) is installed facing upward, the venting hole (230H) may be provided in the upper area of ​​the venting portion.

[0057] According to this structure, high-temperature gas and flames inside the module can be smoothly discharged. The venting holes (230H) may be formed in multiple numbers on the upper cover (230). For example, the venting holes (230H) may be provided in multiple numbers along the structure in which the battery cell (100) is arranged. Furthermore, according to this structure, even if a large amount of gas is generated inside the battery module (10), the gas can be smoothly discharged to the outside of the battery module (10) through the multiple venting holes (230H). That is, the time the venting gas remains inside the module housing (200) can be minimized.

[0058]

[0059] In another aspect of the present invention, the venting hole (230H) may include a mesh. According to such a structure, the mesh can prevent sparks generated in the battery cell (100) from flying out of the battery cell (100). In addition, it can prevent fire from spreading to another battery module (10) adjacent to the battery module (10) where a thermal event occurred.

[0060]

[0061] FIG. 4 is a drawing for explaining the internal structure of a battery module (10) according to one embodiment of the present invention, and FIG. 5 is a top view of a battery module (10) according to one embodiment of the present invention.

[0062] Referring to FIGS. 2 and 4, the resin portion (300) may be provided in the upper region of the internal space of the module housing (200). At this time, the resin portion (300) may be configured to surround the outer surface of the plurality of battery cells (100). The resin portion (300) may be interposed between the battery cell (100) and the module housing (200) to fix the battery cell (100) in place.

[0063] In one aspect of the present invention, the resin portion (300) may be configured to induce gas discharged from the upper part of the battery cell (100) to be discharged to the outside of the module housing (200). More specifically, referring to FIG. 2, the resin portion (300) may penetrate in the height direction of the battery module (10).

[0064] The resin portion (300) may include a gas discharge portion (300H) having a shape that matches the surface of the battery cell (100). For example, in the case where the battery cell (100) is a cylindrical battery cell (100), the resin portion (300) may include at least one gas discharge portion (300H) having a diameter equal to the diameter of the battery cell (100). Preferably, the resin portion (300) may include a plurality of gas discharge portions (300H) having a diameter equal to the diameter of the battery cell (100). For example, the resin portion (300) may include a number of gas discharge portions (300H) corresponding to the number of battery cells (100). Specifically, one battery cell (100) may be accommodated within one gas discharge portion (300H).

[0065] For example, the resin portion (300) may be configured in a block shape that is approximately rectangular. That is, the resin portion (300) may be configured in a block shape having a predetermined thickness in the height direction. In addition, the resin portion (300) may be configured to block the plurality of battery cells (100) from each other in the horizontal direction. As an example, the resin portion (300) may be configured to fill the entire area between the battery cells (100).

[0066] At this time, the block may be provided with a plurality of through holes that penetrate the interior in a cylindrical manner. At this time, the block corresponds to the main body of the resin part (300) of the present invention, and the through holes correspond to the gas discharge part (300H) of the resin part (300) of the present invention.

[0067] According to this configuration, when venting gas is discharged through the venting section provided at the top of the battery cell (100), the venting gas is collected in the venting space of the gas discharge section (300H). At this time, since the diameter of the gas discharge section (300H) matches the diameter of the battery cell (100), there is no gap between the resin section (300) and the battery cell (100). Therefore, the venting gas collected in the venting space cannot flow into the space between the resin section (300) and the battery cell (100). Accordingly, the venting gas cannot enter the lower region of the resin section (300). That is, the venting gas can only move to the upper region of the resin section (300) and can eventually be discharged to the outside of the module housing (200) through the venting hole (230H) provided in the upper cover (230).

[0068]

[0069] In another aspect of the present invention, the gas discharge section (300H) may be configured to have a flow path shape. Referring to FIG. 2, the gas discharge section (300H) may be configured to have a flow path shape that penetrates in the height direction of the battery module (10). In this case, the flow path has a structure that does not communicate with adjacent flow paths. That is, one gas discharge section (300H) has a structure in which gas does not communicate with another adjacent gas discharge section (300H).

[0070] According to the above configuration, when venting gas is discharged from one battery cell (100), the venting gas is introduced only into one gas discharge section (300H), and the venting gas is not introduced into an adjacent battery cell (100). Accordingly, according to the present invention, heat propagation to an adjacent battery cell (100) can be effectively blocked.

[0071]

[0072] In another aspect of the present invention, at least a portion of the battery cell (100) may be accommodated within the gas discharge portion (300H) of the resin portion (300).

[0073] For example, referring to FIG. 4, the upper portion of the battery cell (100) may be located in the area between the upper surface and the lower surface of the resin portion (300). That is, when the battery module (10) is viewed from the side, the upper portion of the battery cell (100) may be positioned between the upper surface and the lower surface of the resin portion (300). With this configuration, a venting space may be formed between the gas exhaust portion (300H) and the upper cover (230). The venting space has a structure that prevents communication with the venting space of an adjacent gas exhaust portion (300H). More specifically, the upper surface of the resin portion (300) is structured to be in contact with the upper cover (230) of the module housing (200). Accordingly, the venting gas discharged into the venting space moves upward along the gas discharge section (300H) guided in the height direction, and when it comes into contact with the upper cover (230) of the module housing (200), it is finally discharged to the outside of the module housing (200) through the venting hole (230H) provided in the upper cover (230).

[0074] Accordingly, in the case where a thermal event occurs in one of the battery cells (100) among the plurality of battery cells (100) housed in the battery module (10) and venting gas is emitted, the transmission of high-temperature venting gas and / or flame to adjacent battery cells (100) can be effectively prevented. Accordingly, according to the present invention, it is possible to prevent a minute thermal event from developing into a thermal runaway.

[0075]

[0076] In one aspect of the present invention, the gas discharge portion (300H) may be covered in at least a portion by the upper cover (230).

[0077] For example, referring to FIGS. 4 and 5, the upper cover (230) may be configured to cover the upper surface of the gas discharge section (300H). In this case, the upper cover (230) may be configured to be in direct contact with the upper surface of the gas discharge section (300H). Additionally, the gas discharge section (300H) may be configured to be in communication with the venting hole (230H).

[0078] According to this configuration, the venting gas guided to the gas discharge section (300H) can be discharged directly toward the venting hole (230H). That is, according to the above configuration, the venting gas guided to the gas discharge section (300H) can be structurally blocked from re-entering another battery cell (100).

[0079]

[0080] Referring again to FIG. 5, the gas discharge section (300H) and the venting hole (230H) may have a first region (S1) configured to be in communication with each other. Meanwhile, the gas discharge section (300H) and the venting hole (230H) may have a second region (S2) configured to overlap each other.

[0081] Specifically, the upper cover (230) may be configured to be in contact with the upper surface of the resin part (300). At this time, the venting hole (230H) provided in the upper cover (230) may be configured to overlap with at least a portion of the gas discharge part (300H). For example, in the first area (S1), the venting hole (230H) of the upper cover (230) and the gas discharge part (300H) of the resin part (300) have a structure in which they are in communication with each other. Accordingly, the venting gas can be smoothly discharged to the outside of the battery module (10) through the first area (S1).

[0082] Meanwhile, in the second region (S2), the plate structure of the upper cover (230) has a structure that physically blocks the gas discharge portion (300H) of the resin portion (300). Accordingly, the resin portion (300) can be effectively prevented from escaping outside the module housing (200). In addition, according to the structure, the battery cell (100) can be prevented from escaping upward. That is, the plate structure of the upper cover (230) prevents the battery cell (100) and the resin portion (300) from escaping outside the module housing (200).

[0083] According to the above structure, the venting gas emitted from the battery cell (100) can be effectively discharged to the outside of the battery module (10), while preventing the battery cell (100) from escaping to the outside of the battery module (10).

[0084]

[0085] In one aspect of the present invention, the battery module (10) may include a resin support that supports the resin portion (300) from below. Alternatively, in another embodiment, the resin portion (300) may be configured to bind the module housing (200) and the battery cell (100) by being injected between the inner surface of the module housing (200) and the outer surface of the battery cell (100) without a separate resin support.

[0086]

[0087] Meanwhile, the resin part (300) application structure of the present invention can be applied not only to a top venting structure but also to a bottom venting structure.

[0088] For example, the resin portion (300) of the present invention may be applied to a structure in which the venting portion of the battery cell (100) is positioned toward the bottom of the battery module (10), rather than a structure in which the venting portion is positioned toward the top. In this case, since venting is performed in the lower region of the battery module (10), the venting portion of the battery cell (100) is also positioned in the lower region of the battery module (10). Additionally, the resin portion (300) may also be provided in a region adjacent to the region where the venting portion is located. At this time, the resin portion (300) may be configured to extend toward the bottom of the battery module (10). In such a bottom venting structure, the venting hole (230H) of the battery module (10) may be provided on the base plate (210) of the battery module (10). That is, the present invention is not limited only to the top venting structure illustrated in FIGS. 1 to 5, but is also applicable to a bottom venting structure in which venting is performed toward the bottom.

[0089]

[0090] In another aspect of the present invention, the resin portion (300) may include a thermally conductive material. That is, the resin portion (300) can transfer heat generated in the battery cell (100) to the outside.

[0091] According to the structure provided in the upper or lower region of the internal space of the module housing (200) as in the present invention, the curing time of the resin part (300) can be shortened because the resin part (300) is accommodated only in a part of the internal space of the module housing (200). For example, if the amount of resin part (300) is large, it takes a long time to cure, so work efficiency may be reduced. However, according to the present invention, since the resin part (300) is provided only in the upper or lower region of the internal space of the module housing (200), the amount of resin part (300) required can be kept relatively small. As a result, the time required for curing is significantly reduced, and work efficiency can be improved. Furthermore, handling during the manufacturing process of the battery module (10) can be made easier.

[0092] Meanwhile, the resin portion (300) may be composed of a solidified liquid resin. With such a structure, the surface of the battery cell (100) can be effectively covered. Therefore, the contact area between the battery cell (100) and the resin portion (300) can be maximized. Accordingly, the heat dissipation efficiency can also be maximized.

[0093]

[0094] FIG. 6 is a drawing for explaining a battery pack (3) including the battery module (10) of FIG. 1.

[0095] Referring to FIG. 6, the battery pack (3) according to the present invention may include at least one battery module (10) according to the present invention as described above. Additionally, the battery pack (3) according to the present invention may include a pack case (50) capable of accommodating the at least one battery module (10). Furthermore, in addition to the battery module (10), various other components, such as a BMS, a pack case, a relay, a current sensor, etc., which are components of the battery pack (3) known at the time of filing the present invention, may be further included.

[0096]

[0097] FIG. 7 is a drawing for explaining a vehicle (5) including the battery pack (3) of FIG. 6.

[0098] Referring to FIG. 7, the automobile (5) according to the present invention may include at least one battery pack (3) according to the present invention. The battery module (10) according to the present invention may be applied to an automobile (5), such as an electric vehicle (5) or a hybrid vehicle (5). That is, the automobile (5) according to the present invention may include a battery module (10) according to the present invention or a battery pack (3) according to the present invention. In addition, the automobile (5) according to the present invention may include various other components included in the automobile (5) in addition to such a battery module (10) or battery pack (3). For example, the automobile (5) according to the present invention may include, in addition to the battery module (10) according to the present invention, a vehicle body, a motor, a control device such as an ECU (electronic control unit), etc.

[0099]

[0100] Meanwhile, although terms indicating direction such as up and down have been used in this specification, these terms are used merely for convenience of explanation, and it is obvious to a person skilled in the art that they may vary depending on the location of the object or the position of the observer.

[0101] Although the present invention has been described above by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.

[0102] [Explanation of the symbol]

[0103] 5 cars

[0104] 3 battery packs

[0105] 50-pack case

[0106] 10 battery modules

[0107] 200 lower housing

[0108] 210 Base Plate

[0109] 220 side plate

[0110] 230 upper housing

[0111] 230H Venting Hole

[0112] 300 resin part

[0113] 300H gas exhaust part

[0114] S1 Area 1

[0115] S2 Area 2

Claims

1. Multiple battery cells; A module housing configured to accommodate the above battery cell; and A resin part provided in the upper region of the internal space of the module housing, configured to surround the outer surface of the plurality of battery cells, and configured to induce gas discharged from the top of the battery cells to be discharged to the outside of the module housing. A battery module including 2. In Paragraph 1, A battery module characterized in that the venting portion of the battery cell is positioned to face upward within the battery module.

3. In Paragraph 1, A battery module characterized by having at least one venting hole in the upper cover of the module housing.

4. In Paragraph 3, A battery module characterized by including a gas exhaust portion that penetrates the height direction of the battery module and has a shape that matches the surface of the battery cell.

5. In Paragraph 4, A battery module characterized by the above-mentioned gas discharge section being configured to have a flow path shape.

6. In Paragraph 4, A battery module characterized in that at least a portion of the battery cell is accommodated within the gas exhaust portion of the resin portion.

7. In Paragraph 1, A battery module characterized in that the upper portion of the battery cell is configured to be located in the area between the upper surface and the lower surface of the resin portion.

8. In Paragraph 4, A battery module characterized by having a venting space formed between the gas discharge section and the upper cover.

9. In Paragraph 4, A battery module characterized in that the above gas exhaust portion is covered by at least a portion of the upper cover.

10. In Paragraph 4, A battery module characterized in that the above gas discharge portion is configured to be in communication with the above venting hole.

11. In Paragraph 4, A battery module characterized by having a first region configured such that the gas discharge section and the venting hole are in communication with each other.

12. In Paragraph 11, A battery module characterized by having a second region configured such that the gas discharge portion and the venting hole overlap each other.

13. In Paragraph 1, The battery module is characterized by including a resin support member that supports the resin member from below.

14. A battery pack characterized by including at least one battery module described in any one of claims 1 to 13.

15. An automobile characterized by comprising at least one battery pack as described in claim 14.

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