Battery pack

Abstract

A battery pack according to an embodiment of the present invention may include a case providing an interior space, a battery cell disposed within the case, at least one sensor disposed within the case, a ventilation module provided in the case and configured to be openable and closable, and a fan located within the case.

Description

[Technical Field]

[0001] The present invention relates to a battery pack. This application claims priority based on Korean Patent Application No. 10-2022-0183755 filed on December 23, 2022, and Korean Patent Application No. 10-2023-0077597 filed on June 16, 2023, and the contents disclosed in the specifications and drawings of those applications are incorporated herein in their entirety. [Background technology]

[0002] In recent years, the demand for portable electronic products such as laptops, video cameras, and mobile phones has grown rapidly, and as the commercialization of robots and electric vehicles has progressed, active research efforts have been made on high-performance secondary batteries that can be repeatedly charged and discharged.

[0003] Currently commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Of these, lithium secondary batteries are attracting attention due to their advantages of being able to be freely charged and discharged since they have almost no memory effect compared to nickel-based secondary batteries, as well as their extremely low self-discharge rate and high energy density.

[0004] Such lithium secondary batteries primarily use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively, and include an electrode assembly in which a separator is sandwiched between positive and negative electrode plates coated with the positive and negative electrode active materials, and an exterior material, such as a battery case, that encloses the electrode assembly together with an electrolyte solution.

[0005] Generally, lithium secondary batteries are classified into can-type secondary batteries in which an electrode assembly is housed in a metal can and pouch-type secondary batteries in which an electrode assembly is housed in a pouch made of an aluminum laminate sheet, depending on the shape of the exterior material.

[0006] In recent years, secondary batteries have been widely used for driving and storing energy not only in small devices such as portable electronic devices but also in medium- to large-sized devices such as electric vehicles and energy storage systems (ESS). A battery module can be formed by electrically connecting a plurality of such secondary batteries and housing them together inside a module case. A battery pack can be formed by connecting a plurality of such battery modules.

[0007] However, when multiple secondary batteries (battery cells) or multiple battery modules are densely packed in a small space, they may be vulnerable to thermal events. In particular, if an event such as thermal runaway occurs in one battery cell, high-temperature gases, flames, and heat may be generated. If such gases, flames, and heat are transmitted to other battery cells in the same battery module, an explosive chain reaction such as thermal propagation may occur. Such a chain reaction may not only cause accidents such as fires and explosions in the battery module itself, but may also cause fires and explosions in other battery modules.

[0008] Furthermore, medium- to large-sized battery packs, such as those used in electric vehicles, may contain multiple battery cells and battery modules to increase output and / or capacity, further increasing the risk of thermal chain reactions. Furthermore, in the case of battery packs installed in electric vehicles, there may be users, such as drivers, nearby. Therefore, if a thermal event in a particular battery module is not properly controlled and a chain reaction occurs, it could cause significant property damage or even loss of life. Summary of the Invention [Problem to be solved by the invention]

[0009] SUMMARY OF THE INVENTION The present invention seeks to solve these and other problems.

[0010] Another object of the present invention is to provide a battery pack capable of suppressing heat propagation.

[0011] It is yet another object of the present invention to provide a battery pack that can exhaust gases generated by a thermal event to the outside.

[0012] Yet another object of the present invention is to provide a battery pack that can block flames or fires caused by thermal events from spreading to the outside. [Means for solving the problem]

[0013] In order to achieve the above object, a battery pack according to one aspect of the present invention may include a case providing an interior space, a battery cell disposed inside the case, at least one sensor disposed inside the case, a ventilation module provided in the case and configured to be openable and closable, and a fan located inside the case.

[0014] The battery pack may further include an air filter disposed in the case.

[0015] Additionally, the ventilation module may include an elongate opening and a plurality of shutters configured to open and close the opening.

[0016] Furthermore, a plurality of the fans may be provided and arranged along the longitudinal direction of the opening.

[0017] Additionally, the battery pack may further include a processor electrically connected to the battery cells.

[0018] Additionally, the battery cell may be disposed between the processor and the ventilation module.

[0019] Furthermore, the battery pack may further include a connector provided in the case and configured to be connectable to an external device.

[0020] Additionally, the battery cell may be disposed between the connector and the ventilation module.

[0021] Furthermore, the at least one sensor may include a plurality of temperature sensors, and the battery pack may further include a processor that opens the ventilation module and activates the fan when a difference between a maximum value and a minimum value of temperature values measured respectively from the plurality of temperature sensors exceeds a first value.

[0022] Furthermore, the processor may close the ventilation module when a difference between a maximum value and a minimum value of temperature values measured respectively from the plurality of temperature sensors exceeds a second value greater than the first value.

[0023] Furthermore, the at least one sensor may include a plurality of pressure sensors, and the battery pack may further include a processor that opens the ventilation module and activates the fan when a difference between a maximum value and a minimum value of pressure values measured respectively from the plurality of pressure sensors exceeds a third value.

[0024] Furthermore, the processor may close the ventilation module when a difference between a maximum value and a minimum value of pressure values measured from each of the plurality of pressure sensors exceeds a fourth value greater than the third value.

[0025] In order to achieve the above object, a vehicle according to one aspect of the present invention includes a battery pack according to one aspect of the present invention. [Effects of the Invention]

[0026] According to at least one aspect of the present invention, it is possible to provide a battery pack capable of suppressing heat propagation.

[0027] According to at least one aspect of the present invention, it is possible to provide a battery pack that is capable of venting gas generated by a thermal event to the outside.

[0028] According to at least one aspect of the present invention, it is possible to provide a battery pack that can block the propagation of a flame or fire caused by a thermal event to the outside.

[0029] The drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical concepts of the present invention. Therefore, the present invention should not be interpreted as being limited to only the matters described in the drawings. [Brief explanation of the drawings]

[0030] [Figure 1] 1 illustrates a battery pack according to one embodiment of the present invention. [Figure 2] 1 is a configuration diagram of a battery pack according to an embodiment of the present invention; [Figure 3] FIG. 2 is a diagram showing the inside of the battery pack taken along the cutting line AA' in FIG. [Figure 4] 1A and 1B are diagrams illustrating a ventilation module of a battery pack according to an embodiment of the present invention. [Figure 5] 2 is a diagram showing a modified embodiment of the battery pack taken along the section line AA' in FIG. 1. [Figure 6] 1 illustrates an air filter according to one embodiment of the present invention. [Figure 7] 1 illustrates an air filter according to one embodiment of the present invention. [Figure 8] FIG. 2 is a diagram showing the inside of the battery pack taken along the cutting line AA' in FIG. [Figure 9] 10A and 10B are diagrams illustrating a battery pack according to another embodiment of the present invention. [Figure 10] FIG. 10 is a configuration diagram of a battery pack according to another embodiment of the present invention. [Figure 11] 11 is a view showing the inside of the battery pack taken along the cutting line BB' in FIG. 10. FIG. [Figure 12] 11 is a view showing the inside of the battery pack taken along the cutting line BB' in FIG. 10. FIG. [Figure 13] FIG. 2 is a control configuration diagram of a battery pack according to an embodiment of the present invention. [Figure 14] 3 is a control flowchart of a battery pack according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in the specification and claims should not be construed as being limited to their general meanings or dictionary meanings, but should be construed as having meanings and concepts corresponding to the technical ideas of the present invention, in accordance with the principle that the inventors themselves can appropriately define the concepts of terms in order to best describe the invention.

[0032] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, and that there may be various equivalent and modified embodiments that can be substituted for them at the time of this application.

[0033] Fig. 1 is a diagram showing a battery pack according to an embodiment of the present invention. Fig. 2 is a structural diagram of a battery pack according to an embodiment of the present invention. Fig. 3 is a diagram showing the inside of the battery pack along the cutting line A-A' in Fig. 1. Referring to Figs. 1 to 3, a battery pack according to an embodiment of the present invention may include a case 100, a battery cell 210, at least one or more sensors 220, 230, a ventilation module 300, and a fan 400.

[0034] The case 100 may provide an interior space. The case 100 may have a rectangular parallelepiped shape. The case 100 may be composed of multiple parts. The multiple parts may be connected by fastening, bonding, welding, or adhesion. The case 100 may be composed of a top plate 140, a base plate 150, a front plate 110, a rear plate 120, and a side plate 130.

[0035] The battery module 200 may be located inside the case 100. A plurality of battery modules 200 may be provided. The battery modules 200 may be fastened, coupled, welded, attached, or fixed to at least one of the base plate 150, the side plate 130, the front plate 110, the rear plate 120, and the top plate 140 of the case 100.

[0036] The battery module 200 may include a battery cell 210. In this case, the battery cell 210 may refer to a secondary battery. The battery cell 210 may have a cylindrical shape. The battery module 200 may include a plurality of battery cells 210. The plurality of battery cells 210 may form an array or may be stacked.

[0037] The battery module 200 may include at least one or more sensors 220, 230. The sensors 220, 230 may detect the status of the battery cells 210. In order to detect the status of the multiple battery cells 210, the multiple sensors 220, 230 may be distributed and disposed at various positions in the battery module 200.

[0038] The ventilation module 300 may be provided in the case 100. For example, the ventilation module 300 may be provided in the front plate 110. The ventilation module 300 may be attached, fastened, coupled, fixed, welded, or adhered to the case 100. The ventilation module 300 may be configured to be openable and closable. The ventilation module 300 may establish or block communication between the interior space of the case 100 and the outside of the case 100. When the ventilation module 300 is open, the interior space of the case 100 may be connected to the outside. When the ventilation module 300 is closed, the interior space of the case 100 may be blocked from the outside.

[0039] The fan 400 may be located inside the case 100. The fan 400 may be fastened, coupled, welded, attached, or fixed to at least one of the base plate 150, the side plate 130, the front plate 110, the rear plate 120, and the top plate 140 of the case 100, and the ventilation module 300. The fan 400 may be positioned adjacent to the ventilation module 300. Alternatively, the fan 400 may be positioned facing the ventilation module 300. Alternatively, the fan 400 may form a flow toward the ventilation module 300.

[0040] According to this configuration of an embodiment of the present invention, the interior of the battery pack can be selectively connected to the outside. The battery pack can also open and close the ventilation module 300 based on the state of the battery cells 210. Furthermore, the battery pack can increase venting efficiency by driving the fan 400 when the ventilation module 300 is open. As a result, the thermal safety of the battery pack can be improved. For example, if a thermal event occurs in the battery module 200, the temperature and pressure inside the battery pack may increase, and vent gas (g) may be generated. In this case, opening the ventilation module 300 and driving the fan 400 can quickly reduce the temperature and pressure inside the battery, and quickly discharge the vent gas (g) to the outside.

[0041] 1 to 3 , a battery pack according to an embodiment of the present invention may include one or more sensors 220, 230. Each of the battery modules 200 may include one or more sensors 220, 230. For example, each of the battery modules 200 may include four pressure sensors 230 and four temperature sensors 220. The multiple pressure sensors 230 and temperature sensors 220 may be distributed along the distribution of the multiple battery cells 210. The multiple pressure sensors 230 and temperature sensors 220 can detect the pressure and temperature around the multiple battery cells 210.

[0042] FIG. 4 is a diagram illustrating a ventilation module 300 of a battery pack according to an embodiment of the present invention. Referring to FIG. 4, the ventilation module 300 according to an embodiment of the present invention may include an elongated opening 301 and a plurality of shutters 310 configured to open and close the opening 301. (a) of FIG. 4 illustrates the ventilation module 300 in an open state, and (b) of FIG. 4 illustrates the ventilation module 300 in a closed state. The ventilation module 300 may include the opening 301 elongated along the left-right direction or the Y-axis direction. The shutter 310 may also elongate along the left-right direction or the Y-axis direction. Furthermore, there may be multiple shutters 310, and the shutters 310 may be arranged along the up-down direction or the Z-axis direction. The shutters 310 may open and close the opening 301. Each of the multiple shutters 310 is swingable.

[0043] When the ventilation module 300 is closed, the ventilation module 300 can prevent moisture and foreign matter from entering the inside of the case 100 through the opening 301. For this reason, the shutter 310 can be made of an ethylene propylene diene monomer (EPDM) material.

[0044] According to this configuration of one embodiment of the present invention, the ventilation module 300 can selectively make the inside of the case 100 waterproof or dustproof.

[0045] FIG. 5 is a diagram illustrating a modified embodiment of the battery pack taken along the section line A-A' in FIG. 1. Referring to FIG. 5, a battery pack according to an embodiment of the present invention may include a plurality of fans 400 arranged along the longitudinal direction of the opening 301. The plurality of fans 400 may be arranged along the left-right direction or the Y-axis direction. The plurality of fans 400 may face the ventilation module 300. Alternatively, the plurality of fans 400 may form a flow toward the ventilation module 300. The plurality of fans 400 may be attached to a bracket 410. The bracket 410 may be fastened, coupled, welded, attached, or fixed to at least one of the base plate 150, side plate 130, front plate 110, rear plate 120, top plate 140, and ventilation module 300 of the case 100. For example, one side of the bracket 410 may be fastened to the side plate 130 by a fastener S.

[0046] 6 and 7 are diagrams illustrating an air filter 600 according to an embodiment of the present invention. Referring to FIGS. 6 and 7, a battery pack according to an embodiment of the present invention may include the air filter 600. The air filter 600 may be provided in the case 100. For example, the air filter 600 may be provided in the rear plate 120. The rear plate 120 may have a hole 121. The air filter 600 may include a fastening portion 620 fastened to the hole 121, a filter portion 610 through which air passes, and a seal ring 630 provided between the filter portion 610 and the fastening portion 620. The air filter 600 allows air to pass through in order to equalize the air pressure inside the case 100 with the air pressure outside. The air filter 600 also prevents moisture and foreign matter from entering the inside of the case 100.

[0047] According to this configuration of one embodiment of the present invention, the battery pack can maintain equal air pressure inside and outside the case 100 using the air filter 600. Furthermore, when the air pressure or temperature inside the case 100 rises and it becomes difficult to maintain the appropriate temperature and air pressure using only the air filter 600, the battery pack can also open the ventilation module 300.

[0048] 8 is a view showing the inside of the battery pack taken along the section line A-A' in FIG. 1. Referring to FIG. 8, a battery pack according to an embodiment of the present invention can close the ventilation module 300 in the event of a fire. When the temperature and pressure inside the case 100 rise to a point where it is determined that a fire has occurred, the battery pack can close the open ventilation module 300. This can prevent the flames from spreading or escaping to the outside of the battery pack.

[0049] Fig. 9 is a diagram showing a battery pack according to another embodiment of the present invention. Fig. 10 is a structural diagram of a battery pack according to another embodiment of the present invention. Figs. 11 and 12 are diagrams showing the interior of the battery pack taken along the section line B-B' in Fig. 10. Referring to Figs. 9 to 12, the battery pack according to an embodiment of the present invention further includes a processor 500 electrically connected to the battery cells 210, and the battery cells 210 may be disposed between the processor 500 and the ventilation module 300.

[0050] The processor 500 may include a battery disconnect unit (BDU) and a master battery management system (BMS) 520. The battery disconnect unit (BDU) 510 can control power output from the battery pack to the outside or power input from the outside to the battery pack via a first connector 710. The master battery management system (master BMS) 520 may be configured to transmit and receive control information and signals of the battery pack to and from the vehicle via a second connector 720. The master battery management system (master BMS) 520 may be electrically connected to a slave battery management system (slave BMS) 240. The slave battery management system (slave BMS) 240 may be provided in each of the battery modules 200. The slave battery management system (slave BMS) 240 may be configured to transmit and receive control information or status information of the battery module 200 to and from the master battery management system (master BMS) 520. In addition, the slave battery management system (slave BMS) 240 can acquire status information of the battery cells 210 included in the battery module 200.

[0051] The battery module 200 may be located between the processor 500 and the ventilation module 300. Also, a fan may be located between the battery module 200 and the ventilation module 300.

[0052] According to this configuration of an embodiment of the present invention, the vent gas g generated in the battery module 200 can be discharged to the outside through the ventilation module 300 without passing through the processor 500. As a result, the processor 500 is not exposed to the high-temperature vent gas g. Therefore, the stability of the battery pack can be improved.

[0053] 9 to 12, a battery pack according to one embodiment of the present invention may further include a connector 700 provided in the case 100 and configured to be connectable to an external device, and the battery cell 210 may be disposed between the connector and the ventilation module 300.

[0054] The ventilation module 300 may be provided on the rear plate 120. The first connector 710 and the second connector 720 may be provided on the front plate 110. The processor 500 may be disposed adjacent to the front plate 110 or adjacent to the first connector 710 and the second connector 720. Also, a cooling port 800 for cooling the battery pack may be provided on the front plate 110. A cooling fluid may flow through the cooling port 800.

[0055] The vehicle and the battery pack may be physically or electrically connected via a first connector 710 and a second connector 720.

[0056] According to this configuration of one embodiment of the present invention, the vent gas g generated in the battery module 200 can be discharged to the outside through the ventilation module 300 without passing through the connector 700. This prevents the connector from being exposed to the high-temperature vent gas g. This improves the stability of the battery pack.

[0057] FIG. 13 is a control configuration diagram of a battery pack according to an embodiment of the present invention. FIG. 14 is a control flowchart of a battery pack according to an embodiment of the present invention. Referring to FIGS. 13 and 14, the at least one sensor of the battery pack according to an embodiment of the present invention may include a plurality of temperature sensors 220. The battery pack according to an embodiment of the present invention may further include a processor 500 that opens the ventilation module 300 and operates the fan 400 when a difference between a maximum value (Tmax) and a minimum value (Tmin) of temperature values measured by the plurality of temperature sensors 220 exceeds a first value (T1).

[0058] When a thermal event occurs in the battery cell 210, the temperature value measured from the temperature sensor 220 adjacent to the battery cell 210 where the thermal event occurred may be a maximum temperature value (Tmax). And, the temperature value measured from the temperature sensor 220 adjacent to the battery cell 210 far away from the battery cell 210 where the thermal event occurred may be a minimum temperature value (Tmin). For example, when the difference between the maximum temperature value (Tmax) and the minimum temperature value (Tmin) exceeds 60 degrees, the processor 500 may open the ventilation module 300 and activate the fan 400.

[0059] According to this configuration of one embodiment of the present invention, the battery pack can detect a thermal event and quickly discharge the vent gas g to the outside, thereby quickly lowering the internal temperature of the battery pack.

[0060] 13 and 14, the processor 500 of the battery pack according to one embodiment of the present invention may be configured to close the ventilation module 300 when the difference between the maximum (Tmax) and minimum (Tmin) temperature values measured from the plurality of temperature sensors 220 exceeds a second value (T2) greater than the first value (T1).

[0061] For example, the first value may be 60 degrees, and the second value (T2) may be 200 degrees. If the difference between the maximum value (Tmax) and the minimum value (Tmin) of the temperature values measured by the plurality of temperature sensors 220 is equal to or greater than the second value (T2) that is greater than the first value (T1), the processor 500 may determine that a fire has occurred inside the battery pack, and may close the ventilation module 300 and turn off the operation of the fan 400.

[0062] According to this configuration of one embodiment of the present invention, the battery pack can block flames or fire from spreading to the outside.

[0063] 13 and 14, the at least one sensor of the battery pack according to an embodiment of the present invention may include a plurality of pressure sensors 230. The battery pack according to an embodiment of the present invention may further include a processor 500 that opens the ventilation module 300 and operates the fan 400 when a difference between a maximum value (Pmax) and a minimum value (Pmin) of pressure values measured by the plurality of pressure sensors 230 exceeds a third value (P1).

[0064] When a thermal event occurs in a battery cell 210, the pressure value measured from the pressure sensor 230 adjacent to the cell where the thermal event occurred may be a maximum pressure value (Pmax), and the pressure value measured from the pressure sensor 230 adjacent to the battery cell 210 far away from the battery cell 210 where the thermal event occurred may be a minimum pressure value (Pmin). For example, when the difference between the maximum pressure value (Pmax) and the minimum pressure value (Pmin) exceeds 1.5 bar, the processor 500 may open the ventilation module 300 and operate the fan 400.

[0065] According to this configuration of one embodiment of the present invention, the battery pack can detect a thermal event and quickly discharge the vent gas g to the outside, thereby quickly reducing the internal pressure of the battery pack.

[0066] 13 and 14, the processor 500 of the battery pack according to one embodiment of the present invention may be configured to close the ventilation module 300 when the difference between the maximum (Pmax) and minimum (Pmin) pressure values measured from the multiple pressure sensors 230 exceeds a fourth value (P2) greater than the third value (P1).

[0067] For example, the third value (P1) may be 1.5 bar, and the second value (P2) may be 2 bar. When the difference between the maximum value (Pmax) and the minimum value (Pmin) of the pressure values measured by the multiple pressure sensors 230 exceeds a fourth value (P2) that is greater than the third value (P1), the processor 500 may determine that a fire has occurred inside the battery pack, and may close the ventilation module 300 and turn off the operation of the fan 400.

[0068] According to this configuration of one embodiment of the present invention, the battery pack can block flames or fire from spreading to the outside.

[0069] 13 and 14 , a processor 500 of a battery pack according to an embodiment of the present invention may determine whether a difference between a maximum value (Tmax) and a minimum value (Tmin) of temperature values measured from the plurality of temperature sensors 220 is equal to or greater than a first value (T1) and whether a difference between a maximum value (Pmax) and a minimum value (Pmin) of pressure values measured from the plurality of pressure sensors 230 is equal to or greater than a third value (P1) (S1310). At this time, the temperature values measured from the plurality of temperature sensors 220 may be transmitted to the master battery management system (master BMS) 520 via the slave battery management system (slave BMS) 240. And, the pressure values measured from the plurality of pressure sensors 230 may be transmitted to the master battery management system (master BMS) 520 via the slave battery management system (slave BMS) 240. For example, the first value (T1) may be 60 degrees, and the third value (P1) may be 1.5 bar.

[0070] If the difference between the maximum (Tmax) and minimum (Tmin) temperature values is equal to or greater than a first value (T1) and the difference between the maximum (Pmax) and minimum (Pmin) pressure values is equal to or greater than a third value (P1), the processor 500 may determine whether this state has continued for a predetermined time (REF) or more (S1320). The predetermined time (REF) may be several seconds or several minutes. The predetermined time (REF) may also be referred to as a delay time (REF).

[0071] The processor 500 may open the ventilation module 300 and drive the fan 400 when a state in which the difference between the maximum (Tmax) and minimum (Tmin) temperature values is equal to or greater than a first value (T1) and the difference between the maximum (Pmax) and minimum (Pmin) pressure values is equal to or greater than a third value (P1) continues for a predetermined time (REF) or longer (S1330). The processor 500 may then transmit status information of the battery pack to a vehicle control unit (VCU). The processor 500 may also reduce or cut off power transmitted from the battery pack to the vehicle. Alternatively, the vehicle control unit (VCU) 900 may control the processor to reduce or cut off power transmitted from the battery pack to the vehicle.

[0072] The processor 500 may determine whether, while the ventilation module 300 is open and the fan 400 is driven, a difference between the maximum (Tmax) and minimum (Tmin) temperature values measured by the multiple temperature sensors 200 is greater than or equal to a second value (T2) and whether a difference between the maximum (Pmax) and minimum (Pmin) pressure values measured by the multiple pressure sensors 230 is greater than or equal to a fourth value (P2) (S1340). The second value (T2) may be greater than the first value (T1). The fourth value (P2) may be greater than the third value (P1). For example, the second value (T2) may be 200 degrees, and the fourth value (P2) may be 2 bar. The vehicle control unit (VCU) may also output a warning signal, a danger signal, or an emergency signal to a vehicle occupant.

[0073] The processor 500 may close the ventilation module 300 and turn off the fan 400 when the difference between the maximum (Tmax) and minimum (Tmin) temperature values is equal to or greater than a second value (T2) and the difference between the maximum (Pmax) and minimum (Pmin) pressure values is equal to or greater than a fourth value (P2) (S1350). The processor 500 may then transmit status information of the battery pack to a vehicle control unit (VCU). The vehicle control unit (VCU) may output a warning signal, a preparation signal, a danger signal, or an emergency signal to a vehicle occupant. The processor 500 may also reduce or cut off power transmitted from the battery pack to the vehicle. Alternatively, the vehicle control unit (VCU) 900 may control the processor to reduce or cut off power transmitted from the battery pack to the vehicle.

[0074] A vehicle according to an embodiment of the present invention may include the battery pack according to the present invention. The battery pack according to the present invention may be applicable to vehicles such as electric vehicles and hybrid vehicles. In addition to the battery pack, a vehicle according to an embodiment of the present invention may further include various other components included in a vehicle. For example, a vehicle according to the present invention may further include a vehicle body, a motor, a control device such as an electronic control unit (ECU), and the like, in addition to the battery pack according to an embodiment of the present invention.

[0075] Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, and back are used, but these terms are used for the convenience of explanation, and it will be obvious to those skilled in the art of the present invention that they may differ depending on the position of the object in question, the position of the observer, etc.

[0076] As described above, although the present invention has been described using limited embodiments and drawings, the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by a person having ordinary knowledge in the technical field to which the present invention pertains within the technical spirit of the present invention and the equivalent scope of the appended claims. [Explanation of symbols]

[0077] 100 cases 210 battery cells 220 Temperature Sensor (Sensor) 230 Pressure Sensor (Sensor) 300 Ventilation Module 400 fans

Claims

1. A case that provides interior space, a battery cell disposed inside the case; At least one sensor disposed inside the case; a ventilation module provided in the case and configured to be openable and closable; a fan located inside the case; Including the battery pack.

2. The battery pack according to claim 1 , further comprising an air filter provided in the case.

3. The ventilation module comprises: A long opening and a plurality of shutters configured to open and close the opening; 10. The battery pack of claim 1, comprising:

4. The battery pack according to claim 3 , wherein a plurality of the fans are provided and arranged along the longitudinal direction of the opening.

5. further comprising a processor electrically connected to the battery cell; The battery pack of claim 1 , wherein the battery cells are disposed between the processor and the ventilation module.

6. The case further includes a connector configured to be connectable to an external device, The battery pack according to claim 1 , wherein the battery cell is disposed between the connector and the ventilation module.

7. the at least one sensor includes a plurality of temperature sensors; 2. The battery pack of claim 1, further comprising a processor that opens the ventilation module and activates the fan when a difference between a maximum value and a minimum value of temperature values measured respectively from the plurality of temperature sensors exceeds a first value.

8. 8. The battery pack of claim 7, wherein the processor closes the ventilation module when a difference between a maximum value and a minimum value of temperature values measured respectively from the plurality of temperature sensors exceeds a second value greater than the first value.

9. the at least one sensor includes a plurality of pressure sensors; 2. The battery pack of claim 1, further comprising a processor that opens the ventilation module and activates the fan when a difference between a maximum value and a minimum value of pressure values measured from the plurality of pressure sensors exceeds a third value.

10. 10. The battery pack of claim 9, wherein the processor closes the ventilation module when a difference between a maximum value and a minimum value of pressure values measured from the plurality of pressure sensors exceeds a fourth value greater than the third value.

11. A motor vehicle comprising a battery pack according to any one of claims 1 to 10.

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