Battery module

Abstract

A battery module is disclosed. The battery module according to an embodiment of the present invention may comprise: a case which provides an internal space; battery cells which are positioned inside the case; and a fireproof cover which has a first sheet provided on one surface of the case and including a mica material and a second sheet including a metal wire material.

Description

battery module

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

[0002] This application claims priority to Korean Patent Application No. 10-2023-0125754, filed September 20, 2023, the entire disclosure of which is incorporated herein by reference.

[0003] As demand for portable electronic products such as laptops, video cameras, and mobile phones rapidly increases and the commercialization of robots and electric vehicles becomes more widespread, research into high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.

[0005] These lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative electrode active materials, respectively. Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative electrode active materials, respectively, with a separator interposed between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.

[0006] In general, lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.

[0007] Recently, secondary batteries have been widely used for power and energy storage, not only in small devices like portable electronic devices but also in medium- to large-sized devices like electric vehicles and energy storage systems (ESS). Multiple secondary batteries can be electrically connected and housed within a module case to form a single battery module. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] However, when multiple secondary batteries (battery cells) or battery modules are densely packed in a confined space, they can be vulnerable to thermal events. Specifically, if a thermal runaway event occurs in a single battery cell, high-temperature gases, flames, and heat can be generated. If these gases, flames, or heat are transferred to other battery cells within the same battery module, an explosive chain reaction, such as thermal propagation, can occur. This chain reaction can not only cause a fire or explosion in the battery module in question, but can also trigger fires or explosions in other battery modules.

[0009] Moreover, for medium- to large-sized battery packs, such as those used in electric vehicles, the risk of thermal chain reactions can be even greater due to the inclusion of a large number of battery cells and battery modules to increase output and / or capacity. Furthermore, battery packs installed in electric vehicles may be surrounded by users, such as drivers. Therefore, if a thermal event occurring in a specific battery cell or module is not properly controlled and a chain reaction occurs, it can result in significant property damage and even human casualties. Therefore, it is necessary to appropriately control thermal events occurring in battery cells or modules to suppress heat propagation.

[0010] The present invention aims to solve the above-mentioned problems and other problems.

[0011] Another object of the present invention may be to provide a battery module with improved thermal safety when a thermal event occurs.

[0012] Another object of the present invention may be to provide a battery module that discharges venting gas when a thermal event occurs, but suppresses the discharge of flames or ignitable particles.

[0013] Another object of the present invention may be to provide a battery module that is easy to control venting when a thermal event occurs.

[0014] According to one embodiment of the present invention for achieving the above-described purpose, a battery module may include a case providing an internal space; a battery cell positioned inside the case; and a fireproof cover provided on one surface of the case and having a first sheet including a mica material and a second sheet including a metal wire material.

[0015] Additionally, the first sheet may be coupled to one side of the case, and the second sheet may be coupled to the first sheet.

[0016] Additionally, the fire cover may further include a third sheet that is joined to the second sheet and includes a mica material.

[0017] Additionally, the first sheet may have a plurality of first through holes, and the third sheet may have a plurality of second through holes.

[0018] Additionally, the plurality of first through holes and the plurality of second through holes may be arranged in an alternating manner.

[0019] Additionally, the plurality of first through holes may be configured to be larger than the plurality of second through holes.

[0020] Additionally, the battery module may further include a fastening member penetrating at least one of the first sheet and the third sheet and the second sheet.

[0021] Additionally, the first sheet may be attached to one side of the case.

[0022] Additionally, the second sheet may include a mesh structure.

[0023] Additionally, one side of the case may be provided with a venting hole.

[0024] In addition, the fire cover may further include a wire connected to one side of the case, and the fire cover may have a connecting hole through which the wire passes.

[0025] A battery pack according to one aspect of the present invention comprises a battery module of the present invention.

[0026] Additionally, the battery modules may be provided in multiple numbers and may include a fire cover positioned between the multiple battery modules.

[0027] A vehicle according to one aspect of the present invention comprises a battery module of the present invention.

[0028] According to at least one of the embodiments of the present invention, a battery module having improved thermal safety can be provided when a thermal event occurs.

[0029] According to at least one of the embodiments of the present invention, a battery module can be provided that discharges venting gas when a thermal event occurs, but suppresses the discharge of flames or ignitable particles.

[0030] According to at least one of the embodiments of the present invention, a battery module with easy venting control can be provided when a thermal event occurs.

[0031] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0032] Figure 1 is a battery module according to one embodiment of the present invention.

[0033] Fig. 2 is a diagram showing a partial configuration of the battery module of Fig. 1 in isolation.

[0034] FIG. 3 is a drawing showing a detached fire cover of a battery module according to one embodiment of the present invention.

[0035] FIG. 4 is a cross-sectional view showing a fire cover combined with a case of a battery module according to one embodiment of the present invention.

[0036] Figure 5 is a drawing showing a cross-section of Figure 4 when a thermal event occurs.

[0037] Figure 6 is a drawing showing a modified embodiment of Figure 4.

[0038] Figure 7 is a drawing showing another modified embodiment of Figure 4.

[0039] Figure 8 is a drawing showing another modified embodiment of Figure 4.

[0040] Figure 9 is a drawing showing another modified embodiment of Figure 4.

[0041] Figure 10 is a battery module according to another embodiment of the present invention.

[0042] Figure 11 is a battery module according to another embodiment of the present invention.

[0043] Fig. 12 is a drawing showing a modified embodiment of the fire cover of Fig. 3.

[0044] Figure 13 is a battery module according to another embodiment of the present invention.

[0045] Fig. 14 is a drawing showing a cross-sectional configuration along the cutting line A-A' of Fig. 13.

[0046] Figure 15 is a battery module according to another embodiment of the present invention.

[0047] Fig. 16 is a drawing showing a cross-sectional configuration along the cutting line B-B' of Fig. 15.

[0048] FIG. 17 is a drawing showing the end fire cover of a battery module separated according to one embodiment of the present invention.

[0049] FIG. 18 is a drawing showing wires connected to a battery module according to one embodiment of the present invention.

[0050] FIG. 19 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention.

[0051] FIG. 20 and FIG. 21 are drawings showing battery modules accommodated in the battery pack of FIG. 19 as examples.

[0052] Fig. 22 is a drawing showing an example of a cross-section of a neighboring battery module of Fig. 21.

[0053] FIG. 23 is a diagram illustrating a partial configuration of a battery pack according to another embodiment of the present invention.

[0054] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0055] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0056] FIG. 1 is a diagram illustrating a battery module according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a partial configuration of the battery module of FIG. 1 in isolation. FIG. 3 is a diagram illustrating a fire cover (200) of the battery module according to an embodiment of the present invention in isolation.

[0057] Referring to FIGS. 1 to 3, a battery module according to an embodiment of the present invention may include a case (100), a battery cell, and a fire cover (200). The case (100) may include a frame (110) and an end cover (120). The frame (110) may have a rectangular parallelepiped shape. The frame (110) may provide a space inside. The frame (110) may have an open shape at the front and rear sides. The end cover (120) may have a plate shape. The end cover (120) may be coupled, fastened, or fixed to the open portion of the frame (110). In addition, the end cover (120) and the frame (110) may be coupled by welding. The end covers (120) may be provided as a pair. A pair of end covers (120) may cover the front and rear sides of the frame (110), respectively.

[0058] The battery cell may be located inside the case (100). The battery cell may be accommodated in the internal space provided by the frame (110). In this case, the battery cell may refer to a secondary battery. The battery cell may be a secondary battery having a pouch shape. The battery cell may be provided in multiple numbers. The multiple battery cells may be arranged or stacked along one direction. For example, the multiple battery cells may be arranged or stacked along the left-right direction or the Y-axis direction.

[0059] A fire cover (200) may be provided on one side of the case (100). At this time, the fire cover (200) may be provided on either side of the frame (110) or on the end cover (120). In addition, a plurality of fire covers (200) may be provided. For example, the fire cover (200) may include a side fire cover (210) provided on the frame (110). In addition, the fire cover (200) may include an end fire cover (220) provided on the end cover (120).

[0060] The fire cover (200) may include a first sheet (201) comprising a mica material. The first sheet (201) may have high heat resistance and flame resistance. In addition, one or the other surface of the first sheet (201) may include a fire-resistant coating. In addition, the fire cover (200) may include a second sheet (202) comprising a metal wire (122) material. For example, the second sheet (202) may include a material or structure such as steel wool.

[0061] According to this configuration of the present invention, the fire cover (200) can improve the thermal safety of the battery module. When a thermal event occurs, the first sheet (201) of the fire cover (200) can delay or block the propagation of heat or flame emitted from the battery module. In addition, the second sheet (202) can delay or block the propagation of heat by forming an insulating air layer. In addition, the second sheet (202) can capture flames or ignitable particles (f) emitted from the battery module. As a result, flames or ignitable particles (f) emitted from the battery module can be reduced or blocked from being emitted to the outside.

[0062] FIG. 4 is a cross-sectional view showing a fire cover (200) coupled to a case (100) of a battery module according to an embodiment of the present invention. FIG. 5 is a cross-sectional view showing FIG. 4 when a thermal event occurs. Referring to FIGS. 1 to 5, the first sheet (201) of the fire cover (200) of the battery module of the present invention can be coupled to one surface of the case (100). And the second sheet (202) can be coupled to the first sheet (201).

[0063] According to this configuration of the present invention, the fire cover (200) can improve the thermal safety of the battery module. When a thermal event occurs, heat, gas (g), flame, ignitable particles (f), etc. may be released from the inside of the battery module. As a result, the frame (110) or the end cover (120) may melt. Flame, ignitable particles (f), etc. may be released through a hole created by the melting of the frame (110) or the end cover (120). The first sheet (201) can delay or block the release of flame, ignitable particles (f), etc. by being coupled to the case (100). In addition, the second sheet (202) can capture flame, ignitable particles (f), etc. that have passed through the first sheet (201) and delay or block them from being released to the outside.

[0064] Referring to FIGS. 1 to 5, a fire cover (200) according to an embodiment of the present invention may further include a third sheet (203). The third sheet (203) may be bonded to the second sheet (202). The third sheet (203) may include a mica material. The third sheet (203) may have high heat resistance and flame resistance. In addition, one or the other surface of the third sheet (203) may include a fire-resistant coating. The second sheet (202) may be positioned between the first sheet (201) and the third sheet (203).

[0065] According to this configuration of the present invention, the second sheet (202) can be stably fixed. The first sheet (201) and the third sheet (203) can stably support the second sheet (202).

[0066] In addition, according to this configuration of the present invention, the fire cover (200) can improve the thermal safety of the battery module. The second sheet (202) can delay or block the emission of flames or ignitable particles (f) to the outside. The third sheet (203) can delay or block the emission of flames or ignitable particles (f) that the second sheet (202) cannot block. The fire cover (200) can suppress heat propagation more reliably by having the first sheet (201) to the third sheet (203).

[0067] Referring to FIGS. 1 to 5, a fireproof cover (200) of a battery module according to an embodiment of the present invention may include a first through-hole (201a) and a second through-hole (203a). The first through-hole (201a) may be formed in a first sheet (201). A plurality of first through-holes (201a) may be provided. The second through-hole (203a) may be formed in a third sheet (203). A plurality of second through-holes (203a) may be provided.

[0068] According to this configuration of the present invention, the fire cover (200) can improve the thermal safety of the battery module. When a thermal event occurs, flames, gas (g), ignitable particles (f), etc. may be emitted to the outside of the case (100). The first sheet (201) can block the flame. And the gas (g), ignitable particles (f), etc. may flow into the second sheet (202) through the first through-hole (201a). The second sheet (202) can capture the ignitable particles (f), etc. and allow the gas (g) to pass through. And the third sheet (203) can allow the gas (g) to pass through the second through-hole (203a). The fire cover (200) can suppress heat propagation by discharging the gas (g) and blocking the flame and ignitable particles (f).

[0069] Referring to FIGS. 1 to 5, a plurality of first through holes (201a) and a plurality of second through holes (203a) of a fire cover (200) of a battery module according to one embodiment of the present invention may be arranged in an alternating manner.

[0070] According to this configuration of the present invention, the fire cover (200) can improve the thermal safety of the battery module. Since the first through-hole (201a) and the second through-hole (203a) are arranged in an alternating manner, the movement path of gas (g), flame, ignitable particles (f), etc. can be increased when a thermal event occurs. In addition, the movement distance of gas (g), flame, ignitable particles (f), etc. passing through the second sheet (202) can be increased. As a result, the fire cover (200) can suppress heat propagation by discharging gas (g) and more reliably blocking flame and ignitable particles (f).

[0071] Referring to FIGS. 1 to 5, a fire cover (200) of a battery module according to an embodiment of the present invention may be attached to one side of a case (100). In particular, a first sheet (201) of the fire cover (200) may be attached to one side of a frame (110) or an end cover (120).

[0072] According to this configuration of the present invention, the fire cover (200) is attached or adhered to the case (100), thereby more reliably blocking flames and ignitable particles (f).

[0073] Referring to FIGS. 1 to 5, a fire cover (200) of a battery module according to an embodiment of the present invention may include a mesh structure. The second sheet (202) may include a mesh structure. The mesh structure may include a metal material. The mesh structure of the second sheet (202) may be configured to be dense enough to capture flames and ignitable particles (f).

[0074] According to this configuration of the present invention, the fire cover (200) can more reliably capture flames and ignitable particles (f) to improve the thermal stability of the battery module.

[0075] Fig. 6 is a drawing showing a modified embodiment of Fig. 4. Referring to Fig. 6, a plurality of first through holes (201a) of a fire cover (200) of a battery module according to an embodiment of the present invention may be configured to be larger than a plurality of second through holes (203a).

[0076] According to this configuration of the present invention, the pressure at which gas (g) is discharged from the third sheet (203) can be greater than the pressure at which gas (g), flame, ignitable particles (f), etc., are introduced into the first sheet (201). As a result, the time taken for the ignitable particles (f) to pass through the second sheet (202) can be increased, and the ignitable particles (f) can be captured more reliably.

[0077] Fig. 7 is a drawing showing another modified embodiment of Fig. 4. Referring to Fig. 7, the fire cover (200) of the battery module of the present invention can be coupled through a fastening member. A nut (N) can be provided on the outer surface of the first sheet (201). For example, the nut (N) can be a Pem nut (N) fixed to the outer surface of the first sheet (201). In addition, a bolt (B) penetrating the third sheet (203) can be fastened to the Pem nut (N). In addition, the bolt (B) can penetrate the second sheet (202). The second sheet (202) can be fixed between the first sheet (201) and the third sheet (203).

[0078] According to this configuration of the present invention, the first sheet (201) to the third sheet (203) can stably maintain their shape.

[0079] Fig. 8 is a drawing showing another modified embodiment of Fig. 4. Referring to Fig. 8, the fire cover (200) of the battery module of the present invention can be coupled through a fastening member. A nut (N) can be provided on the inner surface of the first sheet (201). For example, the nut (N) can be a fem nut (N) fixed to the inner surface of the first sheet (201). In addition, a bolt (B) penetrating the first sheet (201) and the third sheet (203) can be fastened to the fem nut (N). In addition, the bolt (B) can pass through the second sheet (202). The second sheet (202) can be fixed between the first sheet (201) and the third sheet (203).

[0080] According to this configuration of the present invention, the first sheet (201) to the third sheet (203) can stably maintain their shape.

[0081] Fig. 9 is a drawing showing another modified embodiment of Fig. 4. Referring to Fig. 9, one side of a case (100) according to an embodiment of the present invention may be provided with a venting hole (101). In this case, the venting hole (101) may be provided in a frame (110) or an end cover (120). In addition, the venting hole (101) may be positioned to communicate with the first through hole (201a) of the first sheet (201).

[0082] According to this configuration of the present invention, when a thermal event occurs, gas (g), flame, ignitable particles (f), etc. generated inside the case (100) can quickly flow into the fire cover (200) through the venting hole (101) and the first through hole (201a). As a result, the thermal safety of the battery module can be improved.

[0083] FIG. 10 illustrates a battery module according to another embodiment of the present invention. Referring to FIG. 10, a battery module according to an embodiment of the present invention may include a plurality of fireproof covers (200). A band (240) may stably secure the plurality of fireproof covers (200). The band (240) may stably attach the plurality of fireproof covers (200) to the case (100). The band (240) may include a metal material. In addition, a plurality of bands (240) may be provided. For example, the band (240) may extend along the perimeter of the frame (110). In addition, the band (240) may extend to surround the frame (110) and the end cover (120).

[0084] FIG. 11 is a battery module according to another embodiment of the present invention. Referring to FIG. 10, a battery module according to an embodiment of the present invention may include a plurality of fire covers (200). The plurality of fire covers (200) may be connected, joined, or fixed to each other through caulking. In addition, the plurality of fire covers (200) may be fixed or adhered to the case (100) through caulking. The caulking may be made of a metal material. A caulking portion (230) may be formed along the edges of the plurality of fire covers (200). In addition, the caulking portion (230) may be formed along the perimeter of each of the plurality of fire covers (200). The caulking portion (230) may be referred to as a joining portion (230).

[0085] Fig. 12 is a drawing showing a modified embodiment of the fire cover (200) of Fig. 3. Fig. 13 is a battery module according to another embodiment of the present invention. Fig. 14 is a drawing showing a cross-sectional configuration taken along the cutting line A-A' of Fig. 13. Referring to Figs. 12 to 14, the first sheet (201) may be provided with a first through-hole (201a). And the third sheet (203) may be configured without a through-hole. In addition, the first sheet (201) to the third sheet (203) may be joined through caulking. At this time, the joining portion (230) may be formed along the periphery of the fire cover (200), and may not be formed in some sections. For example, the joining portion (230) may be formed on the upper edge, the lower edge, and the left edge of the fire cover (200), and may not be formed on the right edge. Due to this, the right edge of the fire cover (200) can be opened.

[0086] According to this configuration of the present invention, venting control can be facilitated. When a thermal event occurs, gas (g), flame, ignitable particles (f), etc. emitted from the battery module can flow into the fire cover (200) through the venting hole (101) or the first through-hole (201a). In addition, since the third sheet (203) does not include a through-hole, the gas (g) can be discharged through the right edge of the fire cover (200) or the second sheet (202). At this time, the flame and ignitable particles (f), etc. can be captured by the second sheet (202). Since the gas (g) is discharged through a portion where a connection is not formed, venting control of the battery module can be facilitated.

[0087] Fig. 15 is a battery module according to another embodiment of the present invention. Fig. 16 is a drawing showing a cross-sectional configuration taken along the cutting line B-B' of Fig. 15. Referring to Figs. 15 and 16, the connecting portion (230) may be formed along the perimeter of the fire cover (200), and may not be formed in some sections. For example, the connecting portion (230) may be formed at the lower edge, right edge, and left edge of the fire cover (200), and may not be formed at the upper edge. As a result, the upper edge of the fire cover (200) may be opened.

[0088] According to this configuration of the present invention, gas (g) can be discharged through the upper edge or the second sheet (202) where a connection portion is not formed.

[0089] Referring to FIGS. 10 to 16, a battery module according to an embodiment of the present invention may include fire covers (200) of various shapes. A plurality of fire covers (200) may be provided, and each fire cover (200) may have a different shape and structure. For example, the third sheet (203) of the fire cover (200) provided on the left and right sides of the frame (110) may not include a through hole and may be configured to be vented upward. In addition, the first sheet (201) of the fire cover (200) provided on the upper side of the frame (110) may include a first through hole (201a), and the third sheet (203) may include a second through hole (203a). As a result, the battery module as a whole can be vented upward.

[0090] According to this configuration of the present invention, by combining the structure of the fire cover (200) in various ways, venting control of the battery module can be achieved in various directions.

[0091] Fig. 17 is a drawing showing the end fire cover (220) of a battery module separated according to an embodiment of the present invention. Fig. 18 is a drawing showing a wire (122) connected to a battery module according to an embodiment of the present invention.

[0092] Referring to FIGS. 17 and 18, a battery module according to an embodiment of the present invention may include a wire (122) connected to one side of a case (100). The wire (122) may be electrically and physically connected to a terminal (121) of the battery module. For example, the wire (122) may be electrically and physically connected to an output terminal (121) or a sensing terminal (121) of an end cover (120). In addition, the end fire cover (220) may be provided with a connection hole (221) through which the wire (122) passes.

[0093] According to this configuration of the present invention, the end fire cover (220) can cover the entire end cover (120) except for the portion where the connection hole (221) is formed. As a result, the heat transmission suppression performance of the fire cover (200) can be improved.

[0094] FIG. 19 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention. FIGS. 20 and 21 are diagrams illustrating battery modules accommodated in the battery pack of FIG. 19. FIG. 22 is a diagram illustrating a cross-section of an adjacent battery module of FIG. 21.

[0095] Referring to FIGS. 19 to 22, a battery pack according to an embodiment of the present invention may include a battery module according to an embodiment of the present invention. The battery pack may include a pack case (310) and a pack cover (320). The pack case (310) may provide a space inside. The pack case (310) may have an open top. The pack case (310) may have a rectangular parallelepiped shape. The battery pack may include a plurality of battery modules. The plurality of battery modules may be accommodated in the space provided by the pack case (310). The pack cover (320) may be coupled, fastened, or fixed to an opening of the pack case (310). The pack cover (320) may cover the internal space of the pack case (310). The plurality of battery modules may be arranged or stacked in a row. A fire cover (200) may be positioned between adjacent battery modules. Alternatively, a fire cover (200) may be positioned between adjacent cases (100). At this time, one or two fire covers (200) may be provided.

[0096] According to this configuration of the present invention, heat transmission can be suppressed by positioning the fire cover (200) between adjacent cases (100).

[0097] Referring to FIGS. 21 and 22, two fire covers (200) may be positioned between adjacent cases (100). The two fire covers (200) may face each other and be in contact with each other. In addition, the two third sheets (203) may face each other and be in contact with each other. At this time, the second through holes (203a) formed in each of the third sheets (203) may be positioned in an alternating manner.

[0098] According to this configuration of the present invention, by staggering the second through holes (203a), heat transmission to the neighboring battery module (10) can be suppressed. In addition, gas (g), flame, ignitable particles (f), etc. emitted from the neighboring battery module (10) can be suppressed or blocked from flowing in through the second through holes (203a).

[0099] FIG. 23 is a diagram illustrating a partial configuration of a battery pack according to another embodiment of the present invention. Referring to FIG. 23, the battery pack may include a partition wall (330). The partition wall (330) may partition the internal space of the pack case (310). A battery module (10) may be accommodated in the space partitioned by the partition wall (330).

[0100] According to this configuration of the present invention, the thermal safety of the battery pack can be improved. The fire cover (200) and partition wall (330) of the battery module (10) can more reliably suppress heat propagation.

[0101] In addition, the battery pack according to the present invention may further include various components, for example, components of a battery pack known at the time of filing of the present invention, such as a BMS, a bus bar, a relay, a current sensor, etc.

[0102] A vehicle according to the present invention may include the battery module according to the present invention described above. The battery pack according to the present invention may be applied to vehicles such as electric vehicles or hybrid vehicles. Furthermore, in addition to the battery pack, the vehicle according to the present invention may further include various other components included in the vehicle, such as a body, a motor, and control devices such as an electronic control unit (ECU).

[0103] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back are used in this specification, it is obvious to those skilled in the art that these terms are only for convenience of explanation and may vary depending on the location of the target object or the location of the observer.

[0104] As described above, although the present invention has been described 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 idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. A case that provides internal space; A battery cell located inside the case; and A battery module comprising a fireproof cover provided on one side of the case and having a first sheet comprising a mica material and a second sheet comprising a metal wire material.

2. In paragraph 1, The above first sheet is bonded to one side of the case, The second sheet is a battery module coupled to the first sheet.

3. In paragraph 2, The above fire cover, A battery module further comprising a third sheet bonded to the second sheet and comprising a mica material.

4. In paragraph 3, The above first sheet has a plurality of first through holes, The third sheet is a battery module having a plurality of second through holes.

5. In paragraph 4, A battery module in which the plurality of first through holes and the plurality of second through holes are arranged in an alternating manner.

6. In paragraph 4, A battery module wherein the plurality of first through holes are configured to be larger than the plurality of second through holes.

7. In paragraph 4, A battery module further comprising a fastening member penetrating at least one of the first sheet and the third sheet and the second sheet.

8. In paragraph 1, The above first sheet, A battery module attached to one side of the above case.

9. In paragraph 1, The second sheet above, A battery module comprising a mesh structure.

10. In paragraph 1, One side of the above case is, Battery module having a venting hole.

11. In paragraph 1, Further comprising a wire connected to one side of the case, The above fire cover, A battery module having a connecting hole through which the above wire passes.

12. A battery pack comprising a battery module according to any one of claims 1 to 12.

13. In paragraph 12, The above battery modules are provided in multiples, A battery pack comprising a fire cover positioned between the plurality of battery modules.

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

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