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 all the contents disclosed in the specifications and drawings of the applications are incorporated into this application.

Background Art

[0002] In recent years, the demand for portable electronic products such as notebook computers, video cameras, and mobile phones has been growing rapidly, and as the commercialization of robots, electric vehicles, etc. has been in full swing, efforts have been actively made in research on high-performance secondary batteries that can be repeatedly charged and discharged.

[0003] Examples of currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have attracted attention because they can be freely charged and discharged because they hardly exhibit a memory effect compared to nickel-based secondary batteries, have a very low self-discharge rate, and have a high energy density.

[0004] Such lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are arranged with a separator interposed therebetween, and an exterior material that encloses the electrode assembly together with an electrolytic solution, for example, a battery case.

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

[0006] In recent years, secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium- and large-scale devices such as electric vehicles and energy storage systems (ESS) for propulsion and energy storage. Multiple such secondary batteries can be electrically connected and housed together inside a module case to form a single battery module. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0007] However, when multiple secondary batteries (battery cells) or battery modules are densely packed into a small space, they can 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, or heat are transmitted to other battery cells within the same battery module, an explosive chain reaction situation such as thermal propagation may occur. Such a chain reaction can not only cause accidents such as fires and explosions in the battery module in question, but also potentially cause fires and explosions in other battery modules.

[0008] Furthermore, medium to large battery packs, such as those found in electric vehicles, may contain numerous battery cells and modules to increase output and / or capacity, further increasing the risk of thermal chain reactions. Moreover, in the case of battery packs installed in electric vehicles, there may be users such as drivers nearby. Therefore, if thermal events in a particular battery module are not properly controlled and a chain reaction occurs, it could cause significant property damage or even loss of life. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] One objective of this invention is to solve the above-mentioned problems and other problems.

[0010] Another object of the present invention is to provide a battery pack that can suppress heat propagation.

[0011] Another object of the present invention is to provide a battery pack that can discharge gases caused by thermal events to the outside.

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

[0013] To achieve the above objective, a battery pack according to one aspect of the present invention may include a case that provides internal space, battery cells 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] Furthermore, the battery pack may further include an air filter provided in the case.

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

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

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

[0018] Furthermore, the battery cell may be positioned 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] Furthermore, the battery cell may be disposed between the connector and the ventilation module.

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

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

[0025] In order to achieve the above object, an automobile 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 of the aspects 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 capable of discharging gas due to thermal events to the outside.

[0028] According to at least one aspect of the present invention, it is possible to provide a battery pack capable of blocking the propagation of flame or fire due to thermal events to the outside.

[0029] The drawings attached to this specification illustrate preferred embodiments of the present invention and are for the purpose of further understanding the technical idea of the present invention together with the detailed description of the invention. Therefore, the present invention is not construed as being limited only to the matters described in the drawings.

Brief Description of the Drawings

[0030] [Figure 1] It is a diagram showing a battery pack according to an embodiment of the present invention. [Figure 2] It is a configuration diagram of a battery pack according to an embodiment of the present invention. [Figure 3] It is a diagram showing the inside of the battery pack along the cutting line A - A' in FIG. 1. [Figure 4] It is a diagram showing a ventilation module of a battery pack according to an embodiment of the present invention. [Figure 5] It is a diagram showing a modified embodiment of the battery pack along the cutting line A - A' in FIG. 1. [Figure 6] It is a diagram showing an air filter according to an embodiment of the present invention. [Figure 7] It is a diagram showing an air filter according to an embodiment of the present invention. [Figure 8] It is a diagram showing the inside of the battery pack along the cutting line A - A' in FIG. 1. [Figure 9] It is a diagram showing a battery pack according to another embodiment of the present invention. [Figure 10] It is a configuration diagram of a battery pack according to another embodiment of the present invention. [Figure 11] This figure shows the inside of the battery pack along the cutting line B-B' in Figure 10. [Figure 12] This figure shows the inside of the battery pack along the cutting line B-B' in Figure 10. [Figure 13] This is a control configuration diagram of a battery pack according to one embodiment of the present invention. [Figure 14] This is a control flowchart for a battery pack according to one embodiment of the present invention. [Modes for carrying out the invention]

[0031] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims are not to be interpreted in a manner limited to their general or dictionary meanings, but rather in a manner and concept corresponding to the technical idea of ​​the present invention, in accordance with the principle that inventors themselves may appropriately define the concepts of terms in order to best describe the invention.

[0032] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention. It should be understood that there are various equivalent and modified embodiments that can be substituted for these at the time of filing this application.

[0033] Figure 1 is a diagram showing a battery pack according to one embodiment of the present invention. Figure 2 is a configuration diagram of the battery pack according to one embodiment of the present invention. Figure 3 is a diagram showing the inside of the battery pack along the cutting line A-A' in Figure 1. Referring to Figures 1 to 3, the battery pack according to one 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] Case 100 may provide internal space. Case 100 may have a rectangular parallelepiped shape. Case 100 may be composed of multiple parts. The connection of the multiple parts may be done by fastening, joining, welding, or bonding. Case 100 may consist 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. Multiple battery modules 200 may be provided. The battery module 200 may be fastened, joined, welded, attached, or fixed to at least one of the base plate 150, side plate 130, front plate 110, rear plate 120, and top plate 140 of the case 100.

[0036] The battery module 200 may include battery cells 210. In this case, the battery cells 210 may mean secondary batteries. The battery cells 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 be stacked.

[0037] The battery module 200 may include at least one or more sensors 220, 230. The sensors 220, 230 can detect the state of the battery cells 210. To detect the state of multiple battery cells 210, multiple sensors 220, 230 may be distributed and arranged at various locations on the battery module 200.

[0038] The ventilation module 300 may be provided on the case 100. For example, the ventilation module 300 may be provided on the front plate 110. The ventilation module 300 may be attached to the case 100 by fastening, joining, fixing, welding, or bonding. The ventilation module 300 may be configured to be openable and closable. The ventilation module 300 may communicate with or block the internal space of the case 100 from the outside of the case 100. When the ventilation module 300 is open, the internal space of the case 100 and the outside may be in communication. When the ventilation module 300 is closed, the internal space of the case 100 and the outside may be blocked.

[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, side plate 130, front plate 110, rear plate 120, top plate 140 of the case 100, and the ventilation module 300. The fan 400 may be positioned adjacent to the ventilation module 300, or the fan 400 may be positioned opposite the ventilation module 300, or the fan 400 may form a flow toward the ventilation module 300.

[0040] According to this configuration of one embodiment of the present invention, the inside 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, when the ventilation module 300 is open, the battery pack can drive the fan 400 to improve venting efficiency. 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 rise, or 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] Referring to Figures 1 to 3, a battery pack according to one 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 battery module 200 may include four pressure sensors 230 and four temperature sensors 220. Multiple pressure sensors 230 and temperature sensors 220 may be distributed along the distribution of multiple battery cells 210. Multiple pressure sensors 230 and temperature sensors 220 can detect the pressure and temperature around the multiple battery cells 210.

[0042] Figure 4 shows a ventilation module 300 for a battery pack according to one embodiment of the present invention. Referring to Figure 4, the ventilation module 300 according to one 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. Figure 4(a) may show the ventilation module 300 in the open state, and Figure 4(b) may show the ventilation module 300 in the closed state. The ventilation module 300 may have an elongated opening 301 along the left-right direction or the Y-axis direction. The shutters 310 may also be elongated along the left-right direction or the Y-axis direction. There may be a plurality of shutters 310, and they may be arranged along the up-down direction or the Z-axis direction. The shutters 310 can open and close the opening 301. Each of the plurality of shutters 310 is swingable.

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

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

[0045] Figure 5 shows a modified embodiment of the battery pack along the cutting line A-A' in Figure 1. Referring to Figure 5, a plurality of fans 400 of the battery pack according to one embodiment of the present invention may be provided and 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, joined, 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 of the case 100, and the ventilation module 300. For example, one side of the bracket 410 may be fastened to the side plate 130 by a fastening member S.

[0046] Figures 6 and 7 show an air filter 600 according to one embodiment of the present invention. Referring to Figures 6 and 7, a battery pack according to one embodiment of the present invention may include an 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 can pass air to equalize the air pressure inside the case 100 with the air pressure outside. The air filter 600 can also prevent moisture and foreign matter from entering the inside of the case 100 from the outside.

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

[0048] Figure 8 shows the inside of the battery pack along the cutting line A-A' in Figure 1. Referring to Figure 8, a battery pack according to one embodiment of the present invention can close the ventilation module 300 in the event of a fire. The battery pack can close the open ventilation module 300 when the temperature and pressure inside the case 100 rise to a point at which a fire is determined to have occurred. This prevents flames from spreading or escaping to the outside of the battery pack.

[0049] Figure 9 shows a battery pack according to another embodiment of the present invention. Figure 10 is a configuration diagram of a battery pack according to another embodiment of the present invention. Figures 11 and 12 show the interior of the battery pack along the cutting line B-B' in Figure 10. Referring to Figures 9 to 12, a battery pack according to one embodiment of the present invention further includes a processor 500 electrically connected to a battery cell 210, the battery cell 210 may be located between the processor 500 and a ventilation module 300.

[0050] The processor 500 may include a battery disconnect unit (BDU) and a master battery management system (master 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 send and receive control information and signals for 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 send and receive control information or status information of the battery modules 200 to and from the master battery management system (master BMS) 520. Furthermore, 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. The fan may also be located between the battery module 200 and the ventilation module 300.

[0052] 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 via 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] Referring to Figures 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 a battery cell 210 may be positioned between the connector and the ventilation module 300.

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

[0055] The automobile and the battery pack can be connected physically or electrically via the first connector 710 and the 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. As a result, the connector is not exposed to the high temperature vent gas g. Therefore, the stability of the battery pack can be improved.

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

[0058] If a thermal event occurs in battery cell 210, the temperature value measured by the temperature sensor 220 adjacent to the battery cell 210 where the thermal event occurred may be the maximum temperature value (Tmax). The temperature value measured by the temperature sensor 220 adjacent to a battery cell 210 far away from the battery cell 210 where the thermal event occurred may be the minimum temperature value (Tmin). For example, if 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 rapidly expel vent gas g to the outside. This allows the internal temperature of the battery pack to be rapidly reduced.

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

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

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

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

[0064] If a thermal event occurs in battery cell 210, the pressure value measured by the pressure sensor 230 adjacent to the cell where the thermal event occurred may be the maximum pressure value (Pmax). The pressure value measured by the pressure sensor 230 adjacent to a battery cell 210 that is far away from the battery cell 210 where the thermal event occurred may be the minimum pressure value (Pmin). For example, if 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 activate the fan 400.

[0065] According to this configuration of one embodiment of the present invention, the battery pack can detect a thermal event and rapidly discharge vent gas g to the outside. This allows the internal pressure of the battery pack to be rapidly reduced.

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

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

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

[0069] Referring to Figures 13 and 14, the processor 500 of a battery pack according to one embodiment of the present invention can determine whether the difference between the maximum (Tmax) and minimum (Tmin) temperature values ​​measured from a plurality of temperature sensors 220 is greater than or equal to a first value (T1), and whether the difference between the maximum (Pmax) and minimum (Pmin) pressure values ​​measured from a plurality of pressure sensors 230 is greater than or equal to a third value (P1) (S1310). At this time, the temperature values ​​measured from the plurality of temperature sensors 220 can be transmitted to the master battery management system (master BMS) 520 via a slave battery management system (slave BMS) 240. The pressure values ​​measured from the plurality of pressure sensors 230 can also be transmitted to the master battery management system (master BMS) 520 via a 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] The processor 500 can determine whether a condition has lasted for a predetermined time (REF) or longer if the difference between the maximum (Tmax) and minimum (Tmin) temperature values ​​is greater than or equal to a first value (T1), and the difference between the maximum (Pmax) and minimum (Pmin) pressure values ​​is greater than or equal to a third value (P1) (S1320). The predetermined time (REF) may be a few seconds or a few minutes. The predetermined time (REF) can also be called the delay time (REF).

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

[0072] While the ventilation module 300 is open and the fan 400 is running, the processor 500 may determine whether the 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 the 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 the occupants of the vehicle.

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

[0074] An automobile according to one embodiment of the present invention may include the battery pack according to the present invention described above. The battery pack according to the present invention is applicable to automobiles such as electric vehicles and hybrid vehicles. Furthermore, an automobile according to one embodiment of the present invention may further include various other components included in the automobile in addition to such a battery pack. For example, an automobile according to the present invention may further include, in addition to the battery pack according to one embodiment of the present invention, a vehicle body, a motor, an electronic control unit (ECU), and other control devices.

[0075] On the other hand, while terms such as up, down, left, right, front, and back are used in this specification to indicate direction, these terms are for convenience of explanation and it will be obvious to those skilled in the art that they may vary depending on the position of the object in question, the observer's position, etc.

[0076] As described above, although the present invention has been explained with limited embodiments and drawings, the present invention is not limited thereto, and it goes without saying that various modifications and variations are possible within the equivalent scope of the technical idea of ​​the present invention and the appended claims by persons with ordinary skill in the art to which the present invention pertains. [Explanation of symbols]

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

Claims

1. Cases that provide interior space, A battery cell arranged inside the aforementioned case, The case comprises at least one sensor and A ventilation module provided in the aforementioned case and configured to be openable and closable, A fan located inside the aforementioned case, A battery pack including, The system further includes a processor electrically connected to the aforementioned battery cell, The battery cell is located between the processor and the ventilation module. A battery pack that discharges vent gas generated in the battery cell to the outside of the battery pack via the ventilation module and the fan, without passing it through the processor.

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

3. The aforementioned ventilation module is A long, extending opening, Multiple shutters configured to open and close the aforementioned opening, The battery pack according to claim 1, including the following:

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

5. The case further includes a connector provided in the case and 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.

6. A case that provides an internal space, A battery cell arranged inside the aforementioned case, The case comprises at least one sensor and A ventilation module provided in the aforementioned case and configured to be openable and closable, A fan located inside the aforementioned case, A battery pack including, The aforementioned at least one sensor includes a plurality of temperature sensors, The battery pack further includes a processor that opens the ventilation module and activates the fan when the difference between the maximum and minimum temperature values ​​measured by each of the plurality of temperature sensors exceeds a first value.

7. The battery pack according to claim 6, wherein the processor closes the ventilation module when the difference between the maximum and minimum temperature values ​​measured from each of the plurality of temperature sensors exceeds a second value which is greater than the first value.

8. A case that provides an internal space, A battery cell arranged inside the aforementioned case, The case comprises at least one sensor and A ventilation module provided in the aforementioned case and configured to be openable and closable, A fan located inside the aforementioned case, A battery pack including, The aforementioned at least one sensor includes a plurality of pressure sensors, The battery pack further includes a processor that opens the ventilation module and activates the fan when the difference between the maximum and minimum pressure values ​​measured by each of the plurality of pressure sensors exceeds a third value.

9. The battery pack according to claim 8, wherein the processor closes the ventilation module when the difference between the maximum and minimum pressure values ​​measured from each of the plurality of pressure sensors exceeds a fourth value which is greater than the third value.

10. An automobile comprising the battery pack according to any one of claims 1 to 9.

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