Battery module

Abstract

A battery module is disclosed. The battery module according to an embodiment of the present invention may comprise: bottom covers having first grooves formed on the upper surfaces thereof; a plurality of battery cells positioned on the bottom covers and stacked in a left-right direction; and cooling plates positioned between respective ones of the plurality of battery cells and inserted into the first grooves.

Description

battery module

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

[0002] This application is a priority claim application for Korean Patent Application No. 10-2024-0156181 filed on November 6, 2024, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0003] As the demand for portable electronic products such as smartphones, tablet PCs, and smartwatches increases significantly and electric vehicles become increasingly widespread, research on batteries installed in them, particularly secondary batteries capable of repeated charging and discharging, is actively underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium secondary batteries. Among these, lithium secondary batteries are gaining attention for their advantages, such as the ability to freely charge and discharge with almost no memory effect compared to nickel-based secondary batteries, a very low self-discharge rate, and high energy density.

[0005] These lithium secondary batteries primarily use lithium-based oxides and carbon materials as the positive and negative active materials, respectively. The lithium secondary battery comprises an electrode assembly in which a positive plate and a negative plate, each coated with the positive and negative active materials, are arranged with a separator in between, and an outer casing, namely a battery case, that seals and houses the electrode assembly together with an electrolyte.

[0006] Generally, lithium secondary batteries can be classified according to the shape of the casing into can-type secondary batteries, in which the electrode assembly is embedded in a metal can, and pouch-type secondary batteries, in which the electrode assembly is embedded in a pouch of aluminum laminate sheet.

[0007] Recently, secondary batteries are widely used for driving or energy storage not only in small devices such as portable electronic devices but also in medium-to-large devices such as electric vehicles and Energy Storage Systems (ESS). A single battery module can be formed by housing multiple such secondary batteries together inside a module case while electrically connected. In this case, each secondary battery included in a single battery module can be referred to as a battery cell. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] However, when a battery pack contains multiple battery modules, and each module contains multiple battery cells, it may be vulnerable to thermal chain reactions between modules or cells. For example, if an event such as thermal runaway occurs within a single battery module, it is necessary to suppress the propagation of this runaway to other battery modules or cells. If the propagation of thermal runaway between modules or cells is not properly suppressed, an event originating in a specific module or cell may trigger a chain reaction of thermal reactions in other modules or cells, potentially causing explosions or fires, or significantly amplifying their scale.

[0009] In particular, if an event such as thermal runaway occurs in a single battery module, gases or flames may be randomly released to the outside. If the release of such gases or flames is not properly controlled, they may be released toward other battery modules, potentially causing a thermal chain reaction in those modules. Specifically, module terminals may be located on the front side of a battery module to provide electrical connections to other battery modules or battery packs, such as module busbars. Therefore, if flames are released toward the front of such a battery module, they can damage the module terminals within the battery pack and cause an electrical short circuit. Furthermore, since other battery modules may be located in front of a specific battery module, if flames are released toward the front of that module, the emitted flames may spread toward other modules, making it easy for fire to spread between battery modules.

[0010] If thermal propagation between battery modules or between battery cells is not properly controlled, a rapid voltage drop in the battery module or battery pack may occur. This can lead to a sudden shutdown of the device equipped with the battery module or battery pack, causing unexpected damage. For example, if a sudden voltage drop in the battery pack occurs while an electric vehicle is in operation, there may not be enough time to move the electric vehicle to a safe location.

[0011] Furthermore, if thermal propagation between battery modules or battery cells is not properly controlled and a fire or explosion occurs suddenly, there is a high possibility of causing casualties to users. For example, if thermal runaway occurs in an electric vehicle and a certain amount of time is not secured before it progresses into a full-scale fire, the occupants may not be able to escape safely.

[0012] Accordingly, the present invention is devised to solve the above-mentioned problems and aims to provide a battery module with an improved structure capable of appropriately controlling the discharge of flames, etc. generated inside the battery module, as well as a battery pack including the same and an automobile.

[0013] Another objective of the present invention may be to provide a structure capable of smoothly discharging venting gas generated inside a battery module.

[0014] Another objective of the present invention may be to provide a structure capable of blocking externally generated venting gas from flowing into the interior of the battery module.

[0015] 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 those skilled in the art from the description of the invention below.

[0016] A battery module according to one embodiment of the present invention for achieving the above-mentioned purpose may include: a bottom cover having a first groove formed on its upper surface; a plurality of battery cells located on the bottom cover and stacked along the left and right directions; and a cooling plate located between the plurality of battery cells and inserted into the first groove.

[0017] In addition, the cooling plate may have a flow path inside.

[0018] In addition, the battery module may further include a heat transfer member disposed between the plurality of battery cells and the bottom cover.

[0019] In addition, the cooling plate and the first groove may be extended along the front-rear direction.

[0020] In addition, the above cooling plates may be provided in multiple numbers.

[0021] In addition, the area of ​​the cooling plate may be configured to be larger than the area of ​​the battery cells constituting the plurality of battery cells.

[0022] In addition, the battery module may further include a pad located between the plurality of battery cells.

[0023] In addition, the bottom cover includes a second groove formed on the upper surface, and the pad can be inserted into the second groove.

[0024] In addition, the pad and the second groove may be extended along the front-rear direction.

[0025] In addition, the above pads may be provided in multiple numbers.

[0026] In addition, the area of ​​the pad may be configured to be larger than the area of ​​the battery cells constituting the plurality of battery cells.

[0027] Additionally, the battery module may further include a venting cover having a venting portion located on one side of the bottom cover and facing the lower surface of the plurality of battery cells.

[0028] In addition, the venting portion may include: a separating line; and a separating part surrounded by the separating line.

[0029] In addition, a battery pack according to another aspect of the present invention for achieving the above-mentioned purpose includes a battery module according to the present invention.

[0030] In addition, an automobile according to another aspect of the present invention for achieving the above-mentioned purpose includes a battery module according to the present invention.

[0031] According to at least one of the embodiments of the present invention, when gas or flame is generated inside a battery module, such gas or particles can be easily discharged.

[0032] According to at least one of the embodiments of the present invention, the direction of venting gas discharge can be easily controlled.

[0033] According to at least one of the embodiments of the present invention, the venting gas can be blocked from flowing back into the battery module.

[0034] According to at least one of the embodiments of the present invention, the electrical safety of the battery module can be improved.

[0035] According to at least one of the embodiments of the present invention, heat propagation can be suppressed.

[0036] 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.

[0037] FIG. 1 is a drawing showing a battery module according to one embodiment of the present invention.

[0038] Figure 2 is a drawing showing the battery module of Figure 1 in a different direction.

[0039] Figure 3 is a diagram showing a partial configuration of the battery module of Figure 1 separated.

[0040] Figure 4 is a diagram showing the laminate of Figure 3 separated.

[0041] Figures 5 and 6 are drawings showing the battery cell of Figure 4.

[0042] Figure 7 is a drawing showing the bottom cover and venting cover of Figure 3.

[0043] Figure 8 is an enlarged view of section D of Figure 7.

[0044] Figure 9 is a drawing showing the cross-sectional configuration along the cutting line A-A' of Figure 1.

[0045] Figure 10 is a diagram showing the change in Figure 9 when a thermal event occurs.

[0046] Figure 11 is a drawing showing the cross-sectional configuration along the cutting line B-B' of Figure 1.

[0047] Figure 12 is a diagram showing the change in Figure 11 when a thermal event occurs.

[0048] FIG. 13 is a drawing showing the cross-sectional configuration along the cutting line C-C' of FIG. 1.

[0049] Figure 14 is a diagram showing the change in Figure 2 when a thermal event occurs.

[0050] FIG. 15 is a drawing showing a vehicle according to one aspect of the present invention.

[0051] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0052] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely examples of the present invention and do not represent all aspects of the technical concept of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0053] FIG. 1 is a drawing showing a battery module (200) according to an embodiment of the present invention. FIG. 2 is a drawing showing the battery module (200) of FIG. 1 in a different direction. FIG. 3 is a drawing showing a part of the battery module (200) of FIG. 1 separated. FIG. 4 is a drawing showing the laminate (201) of FIG. 3 separated.

[0054] Referring to FIGS. 1 through 4, the battery module (200) may include a bottom cover (211). The bottom cover (211) may be provided as a pair. The pair of bottom covers (211) may be arranged along the front-rear direction or the X-axis direction. The bottom cover (211) may form the exterior of the battery module (200). The bottom cover (211) may have a flat shape.

[0055] A venting cover (212) may be positioned between a pair of bottom covers (211). The venting cover (212) may be fastened, coupled, fixed, or attached to a pair of bottom covers (211). The venting cover (212) may cover the space between a pair of bottom covers (211). The venting cover (212) may form the exterior of a battery module (200). The venting cover (212) may include a material with high heat resistance. The venting cover (212) may include a material with high fire resistance. The venting cover (212) may include a material with high thermal insulation. For example, the venting cover (212) may include a mica material.

[0056] The battery module (200) may include a battery cell (220). The battery cell (220) may refer to a secondary battery. In particular, the battery cell (220) may be a pouch-type secondary battery. However, the shape of the battery cell (220) is not limited to a pouch shape and may have various shapes, such as a cylindrical shape or a rectangular shape.

[0057] The battery cell (220) may be extended along the front-rear direction or the X-axis direction. The battery cell (220) may include a storage portion (221) having an electrode assembly, a first sealing portion (222) protruding toward the front and rear sides of the storage portion (221), and a second sealing portion (223) protruding downward from the storage portion (221). Additionally, the battery cell (220) may include electrode leads (224) protruding toward the front and rear sides of the first sealing portion (222), respectively. The electrode leads (224) may protrude toward the front and rear sides of each storage portion (221).

[0058] A plurality of battery cells (220) may be provided. A plurality of battery cells (220) may be located on top of a bottom cover (211). A plurality of battery cells (220) may be located on top of a venting cover (212). A plurality of battery cells (220) may form a laminate (201).

[0059] Multiple battery cells (220) can be stacked along one direction. For example, multiple battery cells (220) can be stacked along the left-right direction or the Y-axis direction.

[0060] The battery module (200) may include a cartridge (270). The cartridge (270) may be mounted, coupled, fastened, fixed, or received in the first sealing portion (222) of the battery cell (220). A pair of cartridges (270) may be mounted, coupled, fastened, fixed, or received in the front first sealing portion (222) and the rear first sealing portion (222), respectively. A plurality of cartridges (270) may be provided. A pair of cartridges (270) may be provided to correspond one-to-one with a single battery cell (220). A plurality of cartridges (270) may form a laminate (201).

[0061] The battery module (200) may include a cooling plate (240). The cooling plate (240) may have a flow path (241) inside. A cooling fluid (CM) may flow along the flow path (241). The cooling plate (240) may be in contact with, coupled with, fastened to, or fixed to the battery cell (220). The cooling plate (240) may be provided in multiple numbers. The cooling plate (240) may be stacked along one direction. For example, the cooling plate (240) may be stacked along the left-right direction or the Y-axis direction. The cooling plate (240) may be placed between multiple battery cells (220). For example, the cooling plate (240) may be placed every two battery cells (220). Multiple cooling plates (240) may form a stack (201).

[0062] The cooling plate (240) may have a flat plate shape. The cooling plate (240) may be provided with an inlet (244) and an outlet (245). A flow path (241) may connect the inlet (244) and the outlet (245). A cooling fluid (CM) may be introduced into the inlet (244) and discharged through the outlet (245).

[0063] The first tube (242) and the second tube (243) may be connected. The first tube (242) may be provided in multiple numbers. The second tube (243) may be provided in multiple numbers. The first tube (242) and the second tube (243) may be arranged alternately. The first tube (242) or the second tube (243) may be connected to the inlet (244) of the cooling plate (240). The first tube (242) or the second tube (243) may be connected to the outlet (245) of the cooling plate (240). The first tube (242) and the second tube (243) may be connected to multiple cooling plates (240).

[0064] A pad (250) may be placed between a plurality of battery cells (220). A plurality of pads (250) may be provided. A pad (250) may be placed between at least some of the battery cells (220) and / or outside the stack (201). For example, a pad (250) may be configured to be placed between every two battery cells (220) stacked in the left-right direction. A plurality of pads (250) may form the stack (201).

[0065] These pads (250) may be provided with an elastic material to absorb swelling of the battery cell (220). For example, the pads (250) may be made of a foam material such as polyurethane. Alternatively, the pads (250) may be provided with a material capable of blocking heat or flames. For example, the pads (250) may be provided with an insulating or fireproof material such as silicone or mica.

[0066] A busbar frame assembly (230) may be provided on the front and rear sides of a plurality of battery cells (220), respectively. The busbar frame assembly (230) may be electrically connected to the electrode leads (224) of the plurality of battery cells (220).

[0067] The front busbar frame assembly (230) can be electrically connected to the front electrode leads (224) of a plurality of battery cells (220). The front busbar frame assembly (230) can cover the front of the cooling plate (240). The front busbar frame assembly (230) can cover the front of the pad (250). The front busbar frame assembly (230) can cover the front of the cartridge (270).

[0068] The rear busbar frame assembly (230) can be electrically connected to the rear electrode leads (224) of a plurality of battery cells (220). The rear busbar frame assembly (230) can cover the rear of the cooling plate (240). The rear busbar frame assembly (230) can cover the rear of the pad (250). The rear busbar frame assembly (230) can cover the rear of the cartridge (270).

[0069] A pair of end covers (280) can cover the front and rear sides of the busbar frame assembly (230), respectively. The end covers (280) can have a rectangular shape. A pair of end covers (280) can form the exterior of the battery module (200).

[0070] The front end cover (280) can be fastened, coupled, assembled, or fixed to the front bottom cover (211). The rear end cover (280) can be fastened, coupled, assembled, or fixed to the rear bottom cover (211).

[0071] The control unit (290) may be fastened, coupled, assembled, or fixed to the front end cover (280). The control unit (290) may be provided on the outer surface of the front end cover (280) or on the front surface of the front end cover (280). The control unit (290) may be electrically connected to a plurality of battery cells (220). The control unit (290) may control the charging and discharging of the plurality of battery cells (220). The control unit (290) may obtain status information of the plurality of battery cells (220).

[0072] Side covers (213) may be provided in pairs. Side covers (213) may have a flat shape. Side covers (213) may have a square shape. A pair of side covers (213) may each cover both sides of the laminate (201). Side covers (213) may be fastened, coupled, assembled, or fixed to end covers (280). Side covers (213) may be fastened, coupled, assembled, or fixed to bottom covers (211). Side covers (213) may be fastened, coupled, assembled, or fixed to venting covers (212). A pair of side covers (213) may form the exterior of the battery module (200).

[0073] The top cover (215) may be positioned on top of the laminate (201). The top cover (215) may cover the upper surface of the laminate (201). The top cover (215) may have a flat shape. The top cover (215) may have a square shape. The top cover (215) may form the exterior of the battery module (200). The top cover (215) may be fastened, coupled, assembled, or fixed to the side cover (213). The top cover (215) may be fastened, coupled, assembled, or fixed to the end cover (280).

[0074] The top pad (214) may be positioned between the top cover (215) and the laminate (201). The top pad (214) may have a flat shape. The top pad (214) may be provided with an elastic material to absorb swelling of the battery cell (220). For example, the top pad (214) may be composed of a foam material such as polyurethane. Alternatively, the top pad (214) may be provided with a material capable of blocking heat or flames. For example, the top pad (214) may be provided with an insulating or fireproof material such as silicone or mica. The top pad (214) may be compressed between the top cover (215) and the laminate (201).

[0075] The battery module (200) may include a heat transfer member (260). The heat transfer member (260) may include a material with high thermal conductivity. For example, the heat transfer member (260) may be resin.

[0076] The bottom cover (211) may be provided with a plurality of injection holes (211c). A heat transfer member (260) may be introduced into the interior of the battery module (200) through the injection holes (211c). At this time, the heat transfer member (260) may be in a liquid state. The heat transfer member (260) may be in a liquid state at high temperatures. The injected heat transfer member (260) may become a solid state as the temperature decreases.

[0077] A heat transfer member (260) may be placed between the bottom cover (211) and the laminate (201). The heat transfer member (260) may connect the bottom cover (211) and the laminate (201). The heat transfer member (260) may be placed between the bottom cover (211) and a plurality of battery cells (220). The heat transfer member (260) may connect the plurality of battery cells (220) and the bottom cover (211).

[0078] The heat transfer member (260) may not be placed between the venting cover (212) and the laminate (201).

[0079] A heat transfer member (260) may be positioned between the front busbar frame assembly (230) and the front end cover (280). The heat transfer member (260) may connect the front busbar frame assembly (230) and the front end cover (280). The heat transfer member (260) may be positioned between the rear busbar frame assembly (230) and the rear end cover (280). The heat transfer member (260) may connect the rear busbar frame assembly (230) and the rear end cover (280).

[0080] FIGS. 5 and 6 are drawings showing the battery cell (220) of FIGS. 4. Referring to FIGS. 5 and 6, the battery cell (220) may include an adhesive member (225). The adhesive member (225) can fold and fix the second sealing portion (223) toward the storage portion (221). The adhesive member (225) may be provided in multiple numbers. The adhesive member (225) may be provided in a pair. The second sealing portion (223) located between the pair of adhesive members (225) may be referred to as the second venting portion (223a). The second venting portion (223a) may be the central part of the second sealing portion (223).

[0081] When a thermal event occurs, venting gas (G) can be discharged from the battery cell (220). The venting gas (G) can be discharged through the second sealing portion (223). The portion of the second sealing portion (223) equipped with an adhesive member (225) can maintain a folded and fixed state without bursting due to the pressure of the venting gas (G). As a result, the venting gas (G) can be discharged through the second venting portion (223a).

[0082] FIG. 7 is a drawing showing the bottom cover (211) and venting cover (212) of FIG. 3. FIG. 8 is an enlarged drawing of section D of FIG. 7.

[0083] Referring to FIGS. 7 and 8, the bottom cover (211) may include a first groove (211a). The first groove (211a) may extend lengthwise along the front-rear direction or the X-axis direction. The first groove (211a) may be provided in multiple numbers. The multiple first grooves (211a) may be arranged along the left-right direction or the Y-axis direction.

[0084] The bottom cover (211) may include a second groove (211b). The second groove (211b) may extend along the front-rear direction or the X-axis direction. The second groove (211b) may be provided in multiple numbers. The multiple second grooves (211b) may be arranged along the left-right direction or the Y-axis direction.

[0085] A plurality of first grooves (211a) and a plurality of second grooves (211b) may be arranged alternately. A plurality of first grooves (211a) and a plurality of second grooves (211b) may be arranged alternately along the left-right direction or the Y-axis direction.

[0086] Figure 9 is a diagram showing the cross-sectional configuration along the cutting line A-A' of Figure 1. Figure 10 is a diagram showing the change in Figure 9 when a thermal event occurs.

[0087] Referring to FIGS. 9 and 10, the cooling plate (240) may be inserted, coupled, positioned, fixed, or attached to the first groove (211a). The bottom of the cooling plate (240) may be inserted, coupled, positioned, fixed, or attached to the first groove (211a). The first groove (211a) may extend along the bottom of the cooling plate (240). The cooling plate (240) may extend along the longitudinal direction of the first groove (211a).

[0088] The cooling plate (240) can be securely connected to the bottom cover (211) through the first groove (211a). When a thermal event occurs, the cooling plate (240) may be subjected to pressure due to the swelling of the venting gas (G) or the battery cell (220). The first groove (211a) can prevent deformation of the cooling plate (240) by securing the bottom of the cooling plate (240). By securing the cooling plate (240) securely, the movement of the venting gas (G) to the adjacent battery cell (220) can be blocked. The cooling plate (240) can block the propagation of the thermal event.

[0089] The venting gas (G) may be blocked from moving along the left-right direction or the Y-axis direction. The cooling plate (240) may guide the venting gas (G) to flow along the front-back direction or the X-axis direction.

[0090] The area of ​​the cooling plate (240) can be configured to be larger than the area of ​​the battery cell (220). The cooling plate (240) can be extended further down or along the -Z axis direction than the battery cell (220). By configuring the cooling plate (240) to be larger than the battery cell (220), the cooling efficiency can be increased. By configuring the cooling plate (240) to be larger than the battery cell (220), the venting gas (G) can be cooled. The temperature of the venting gas (G) can be lowered by the cooling plate (240) while it flows along the front-rear direction or along the X-axis direction along the cooling plate (240).

[0091] The pad (250) may be inserted, coupled, positioned, fixed, or attached to the second groove (211b). The bottom of the pad (250) may be inserted, coupled, positioned, fixed, or attached to the second groove (211b). The second groove (211b) may extend along the bottom of the pad (250). The pad (250) may extend along the longitudinal direction of the second groove (211b).

[0092] The pad (250) can be securely connected to the bottom cover (211) through the second groove (211b). When a thermal event occurs, the pad (250) may be subjected to pressure due to swelling of the venting gas (G) or the battery cell (220). The second groove (211b) can prevent deformation of the pad (250) by securing the bottom of the pad (250). By securing the pad (250) securely, the movement of the venting gas (G) to the adjacent battery cell (220) can be blocked. The pad (250) can block the propagation of the thermal event.

[0093] The venting gas (G) may be blocked from moving along the left-right direction or the Y-axis direction. The pad (250) may guide the venting gas (G) to flow along the front-back direction or the X-axis direction.

[0094] The area of ​​the pad (250) can be configured to be larger than the area of ​​the battery cell (220). The pad (250) can be extended further down or along the -Z axis direction than the battery cell (220). By configuring the pad (250) to be larger than the battery cell (220), the thermal insulation efficiency can be increased.

[0095] FIG. 11 is a diagram showing the cross-sectional configuration along the cutting line B-B' of FIG. 1. FIG. 12 is a diagram showing the change in FIG. 11 when a thermal event occurs. FIG. 13 is a diagram showing the cross-sectional configuration along the cutting line C-C' of FIG. 1. FIG. 14 is a diagram showing the change in FIG. 2 when a thermal event occurs.

[0096] Referring to FIGS. 7 and FIGS. 11 through 14, the bottom of the cooling plate (240) may be in contact with the venting cover (212). The bottom of the pad (250) may be in contact with the venting cover (212).

[0097] The venting cover (212) may be provided with a separation line (212b). The separation line (212b, score line) may be used as a general term including a perforated line (212b, perforated line), a notching line (212b, notching line), a cutting line (212b, cutting line), a shredding line (212b, shredding line), a tear line (212b, tear line), or a separation line (212b, separation line). The separation line (212b) may be configured to be easily separated by pressure applied to the venting cover (212).

[0098] The separation line (212b) may have a rectangular trajectory. The portion of the venting cover (212) surrounded by the separation line (212b) may be referred to as the separation part (212c). The first venting section (212a) may include the separation line (212b) and the separation part (212c). The separation line (212b) may be provided in multiple numbers. The multiple separation lines (212b) may be arranged along the left-right direction or the Y-axis direction. The separation part (212c) may be provided in multiple numbers. The multiple separation parts (212c) may be arranged along the left-right direction or the Y-axis direction.

[0099] The separation part (212c) can be separated from the venting cover (212) by pressure applied to the venting cover (212). As a result, a venting hole (212d) can be formed in the venting cover (212).

[0100] The first venting section (212a) may face the second venting section (223a). When a thermal event occurs, the venting gas (G) may be discharged through the second venting section (223a). The venting gas (G) may be discharged in a downward direction or in the -Z axis direction. The venting gas (G) may apply pressure to the separation part (212c). The separation part (212c) may be separated by the venting gas (G), and a venting hole (212d) may be formed. The venting gas (G) may be discharged to the outside of the battery module (200) through the venting hole (212d).

[0101] At this time, the venting hole (212d) may be formed only in the separation part (212c) facing the battery cell (220) where the thermal event occurred. The other separation part (212c) may not be separated. The separation part (212c) that is not separated may block the venting gas (G) from flowing into the interior of the battery module (200).

[0102] A battery pack according to the present invention may include a battery module (200) of the present invention. A battery pack according to the present invention may include a plurality of battery modules (200).

[0103] The battery pack according to the present invention may further include various other components in addition to the battery module (200), such as a BMS, a busbar, a relay, a current sensor, etc., and various other components of a battery pack known at the time of filing the present invention.

[0104] FIG. 15 is a drawing showing a vehicle according to one aspect of the present invention. Referring to FIG. 15, the vehicle (V) according to the present invention may include a battery module (200) of the present invention. The vehicle (V) according to the present invention may include a battery pack of the present invention.

[0105] The battery module (200) according to the present invention may be applied to a vehicle such as an electric vehicle or a hybrid vehicle. The vehicle (V) according to the present invention may further include various other components included in the vehicle in addition to the battery module (200). For example, the vehicle (V) according to the present invention may further include a vehicle body, a motor, an ECU (electronic control unit), and other control devices.

[0106] As described above, although the present invention has been explained 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.

Claims

1. A bottom cover having a first groove formed on its upper surface; A plurality of battery cells located on the above-mentioned bottom cover and stacked along the left-right direction; and, A battery module comprising a cooling plate positioned between the plurality of battery cells and inserted into the first groove.

2. In Paragraph 1, The above cooling plate is, A battery module equipped with an internal Euro.

3. In Paragraph 1, A battery module further comprising a heat transfer member disposed between the plurality of battery cells and the bottom cover.

4. In Paragraph 1, The above cooling plate and the above first groove are a battery module extending along the front-rear direction.

5. In Paragraph 1, The above cooling plate is, Multiple battery modules.

6. In Paragraph 1, The area of ​​the above cooling plate is, A battery module configured to be larger than the area of ​​the battery cells constituting the plurality of battery cells.

7. In Paragraph 1, A battery module further comprising a pad located between the plurality of battery cells.

8. In Paragraph 7, The above bottom cover is, It includes a second groove formed on the upper surface, and The above pad is, A battery module inserted into the second groove above.

9. In Paragraph 8, The above pad and the above second groove are a battery module extending along the front-rear direction.

10. In Paragraph 8, The above pad is, Multiple battery modules.

11. In Paragraph 8, The area of ​​the above pad is, A battery module configured to be larger than the area of ​​the battery cells constituting the plurality of battery cells.

12. In Paragraph 1, A battery module further comprising a venting cover having a venting portion located on one side of the bottom cover and facing the lower surface of the plurality of battery cells.

13. In Paragraph 12, The above venting section is: Separator line; and, A battery module including a separated part surrounded by the above-mentioned separator line.

14. A battery pack comprising a battery module according to any one of claims 1 to 13.

15. An automobile comprising a battery module according to any one of claims 1 to 13.

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