Battery pack and vehicle device including the same

Abstract

A battery pack according to an embodiment of the present invention comprises: a plurality of battery cells; a battery pack frame to which the battery cells are mounted directly or to which the battery cells are mounted in a state in which the battery cells have been accommodated in the module frame; a pack cover covering the pack frame; and one or more frame members provided at the battery pack cover and having cooling water or fire extinguishing water.

Description

Technical Field

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0011561, filed with the Korean Intellectual Property Office on January 25, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0003] This disclosure relates to battery packs and vehicle devices including the same, and more specifically, to battery packs and vehicle devices including the same capable of reducing the surface temperature of the battery pack and thus preventing the surface of the battery pack from catching fire. Background Technology

[0004] In modern society, the use of mobile devices such as cellular phones, laptops, camcorders, and digital cameras has become commonplace, accelerating technological development in related fields. Furthermore, as a measure to address air pollution caused by existing gasoline vehicles using fossil fuels, rechargeable batteries are being used as a power source for electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (P-HEVs). Therefore, the need to develop rechargeable batteries is increasing.

[0005] Currently, commercially available batteries include nickel-cadmium (NiCd), nickel-metal hydride (NiMH), nickel-zinc (NiZn), and lithium-ion (LiN) batteries. Among these, lithium-ion batteries are the most popular because they do not suffer from the memory effect compared to nickel-based rechargeable batteries, are therefore freely rechargeable, have a low self-discharge rate, and possess high energy density.

[0006] Typically, lithium-ion secondary batteries use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively. A lithium-ion secondary battery includes an electrode assembly manufactured by placing a separator between a positive electrode plate and a negative electrode plate, which are respectively coated with positive and negative electrode active materials, and a battery casing that hermetically houses the electrode assembly and the electrolyte.

[0007] Generally, based on the external shape of the battery casing, lithium secondary batteries can be divided into can-shaped secondary batteries, which are manufactured by mounting the electrode assembly in a metal can, and bag-shaped secondary batteries, which are manufactured by mounting the electrode assembly in a bag made of aluminum laminate.

[0008] In the case of secondary batteries used in small devices, two or three battery cells are arranged, while in the case of secondary batteries used in medium and large vehicle devices such as automobiles, battery modules comprising multiple battery cells electrically connected to each other are used. In a battery module, multiple battery cells are connected in series or parallel to form a battery cell stack, which increases capacity and power. One or more battery modules can be installed together with various control and protection systems such as a battery management system (BMS), a battery disconnect unit (BDU), and a cooling system to form a battery pack.

[0009] A battery pack can include battery modules as a sub-concept, and a battery module can include battery cells as a sub-concept. Furthermore, the number of battery cells included in a battery module or the number of battery modules included in a battery pack can be determined differently depending on the output or capacity of the battery pack required by the electric vehicle.

[0010] However, safety is one of the most critical issues with this type of battery pack. In particular, a thermal event can generate high-temperature exhaust gases and heat when it occurs in any of the multiple battery cells included in the pack.

[0011] Figure 1 It is a cross-sectional view showing a conventional battery pack and a conventional chassis within the vehicle assembly.

[0012] Reference Figure 1 When thermal runaway occurs, high-temperature exhaust gases are released from the side surface of the conventional battery pack 1. Due to the thermal runaway inside the conventional battery pack 1, the surface temperature of the conventional battery pack 1 rises. High-temperature exhaust gases flow from the interior of the conventional chassis 10 into the surface of the conventional battery pack 1. At this point, the high-temperature exhaust gases ignite the surface of the conventional battery pack 1. Since such ignition could lead to an explosion of the battery pack 1 and the vehicle assembly including the battery pack 1, it is necessary to reduce the surface temperature of the battery pack to prevent such surface ignition. Summary of the Invention

[0013] Technical issues

[0014] The objective of this invention is to prevent surface fire of a battery pack in the event of thermal runaway. Specifically, the objective of this disclosure is to provide a battery pack that can reduce the surface temperature of the battery pack and thus prevent surface fire, and a vehicle device including the same.

[0015] However, the technical objectives addressed by the embodiments of this disclosure are not limited to those disclosed above, and can be extended in various ways within the scope of the technical concepts included in this disclosure.

[0016] Technical solution

[0017] A battery pack according to an embodiment of the present disclosure includes: a plurality of battery cells; a battery pack frame, wherein the battery cells are directly mounted to the battery pack frame or are mounted to the battery pack frame while being housed in a module frame; a battery pack cover covering the battery pack frame; and one or more frame members disposed on the battery pack cover and containing cooling water or fire extinguishing water.

[0018] The battery pack frame is a tubular component with a cavity extending in one direction, and cooling water or fire extinguishing water is contained within the cavity.

[0019] The frame components may include thermal interface material (TIM) pads that abut against the battery pack cover.

[0020] The battery pack may include tape located between the frame members and the TIM pad.

[0021] The frame components may include one or more valves for discharging cooling water or fire extinguishing water.

[0022] The valve may include a discharge port facing the battery pack cover.

[0023] The frame member may include a mounting portion having a mounting hole formed therein, and mounting bolts may pass through the mounting hole to fasten to at least one of the battery pack cover or the battery pack frame.

[0024] The frame member may include a first cavity and a second cavity containing cooling water or fire extinguishing water, and the mounting part may be located between the first cavity and the second cavity.

[0025] The frame components can be welded and joined to the battery pack cover.

[0026] According to another embodiment of the present disclosure, a vehicle device includes a battery pack, wherein a frame member is fixed between the battery pack cover and the chassis inside the vehicle device to each of the battery pack cover and the chassis inside the vehicle device.

[0027] Beneficial effects

[0028] According to embodiments of this disclosure, the battery pack includes one or more frame members containing cooling water or fire extinguishing water, thereby reducing the surface temperature of the battery pack. This prevents the surface of the battery pack from igniting, thus preventing flame leakage.

[0029] The effects of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the description of the appended claims any additional effects not described above. Attached Figure Description

[0030] Figure 1It is a cross-sectional view showing a conventional battery pack and a conventional chassis within the vehicle assembly.

[0031] Figure 2 This is an exploded perspective view showing a battery pack according to an embodiment of the present disclosure.

[0032] Figure 3 This is a perspective view showing a battery pack according to an embodiment of the present disclosure.

[0033] Figure 4 This is a plan view showing a battery pack according to an embodiment of the present disclosure.

[0034] Figure 5 This is a plan view showing a battery pack according to an embodiment of the present disclosure.

[0035] Figure 6 It shows along Figure 4 A cross-sectional view of the section cut by the cutting line A-A'.

[0036] Figure 7 This is a cross-sectional view of a battery pack according to another embodiment of the present disclosure.

[0037] Figure 8 This is a cross-sectional view of a battery pack according to another embodiment of the present disclosure.

[0038] Figure 9 It shows along Figure 4 A cross-sectional view of the section cut by the cutting line B-B'.

[0039] Figure 10 This is a cross-sectional view of a battery pack according to another embodiment of the present disclosure.

[0040] Figure 11 This is a partial perspective view showing the outlet of the valve included in the battery pack.

[0041] Figure 12 It shows the chassis along Figure 4 A cross-sectional view of the section cut by the cutting line C-C'.

[0042] Figure 13 This is a cross-sectional view of a chassis according to another embodiment of the present disclosure. Detailed Implementation

[0043] In the following description, various embodiments of the present disclosure will be detailed to the extent that those skilled in the art can readily practice it. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein.

[0044] For clarity in describing this disclosure, descriptions of components not related to this disclosure will be omitted, and throughout the description, the same or similar reference numerals will be used to denote the same or similar components.

[0045] For ease of description, the dimensions and thicknesses of each component are arbitrarily illustrated in the accompanying drawings; therefore, this disclosure is not limited to the dimensions and thicknesses shown. The drawings depict thicknesses at an enlarged scale to clearly show the different layers and regions. Furthermore, the drawings enlarge the thickness of specific layers or regions for ease of description.

[0046] When layers, films, regions, plates, etc., are disposed "on" a specific component, the description includes not only cases where the layers, films, regions, plates, etc., are disposed "directly" on the specific component, but also cases where the layers, films, regions, plates, etc., are disposed on the specific component via another component. When a component is disposed "directly" on another component, this indicates that there is no new component between the two components. Furthermore, when a component is disposed "on" a reference component, this indicates that the component exists on top of or below the reference component, and does not necessarily indicate that the component is disposed only at the top of the reference component opposite to the direction of gravity.

[0047] Throughout this description, when a component “includes” an element, unless otherwise defined, this does not indicate that the component does not include other components, but rather that the component may further include other components.

[0048] Throughout this description, the term "in a plan view" refers to an object viewed from above, and the term "in a cross-sectional view" refers to a vertical cross-section of an object viewed from the side.

[0049] Figure 2 This is an exploded perspective view showing a battery pack 1000 according to an embodiment of the present disclosure. Figure 3 This is a perspective view showing a battery pack 1000 according to an embodiment of the present disclosure. Figure 4 This is a plan view showing a battery pack 1000 according to an embodiment of the present disclosure. Specifically, Figure 4 This is a plan view of battery pack 1000 as viewed along the -z axis on the xy plane.

[0050] Reference Figures 2 to 4 According to embodiments of the present disclosure, a battery pack 1000 includes a plurality of battery cells 100. The battery pack 1000 includes a battery pack frame 1100 to which the battery cells 100 are directly mounted, or mounted to the battery pack frame 1100 while being housed within a module frame 110. The battery pack 1000 includes a battery pack cover 1200 covering the battery pack frame 1100. Furthermore, the battery pack 1000 includes one or more frame members 1300 disposed on the battery pack cover 1200 and containing cooling water or fire extinguishing water.

[0051] like Figure 2 and Figure 3 As shown, the frame member 1300 may have a shape extending in a direction perpendicular to the longer side of the width of the battery pack 1000. Furthermore, a plurality of frame members 1300 may be provided, and the plurality of frame members 1300 may be arranged at regular intervals along the longer side of the width of the battery pack 1000.

[0052] According to embodiments of this disclosure, the battery pack 1000 includes one or more frame members 1300 containing cooling water or fire extinguishing water, which can reduce the surface temperature of the battery pack 1000. Therefore, surface ignition of the battery pack 1000 can be prevented, thereby cutting off flame outflow and preventing explosion.

[0053] The frame member 1300 may include an opening / closing section (not shown) for injecting or discharging cooling water or fire extinguishing water. Users of the vehicle equipment may inject or discharge cooling water or fire extinguishing water into or from the frame member 1300 via the opening / closing section, depending on the remaining amount of cooling water or fire extinguishing water in the frame member 1300.

[0054] The frame member 1300 may be equipped with a water level sensor (not shown) that can check the remaining amount of cooling water or fire extinguishing water contained in the frame member 1300. The vehicle unit may be equipped with a water level display unit (not shown) that receives data on the water level of the cooling water or fire extinguishing water from the water level sensor and displays the water level. Through the water level display unit, the user of the vehicle unit can check the water level of the cooling water or fire extinguishing water.

[0055] Furthermore, the vehicle unit may be equipped with a water level warning display unit, which can notify the user of the vehicle unit when the water level of the cooling water or fire extinguishing water contained in the frame member 1300 exceeds or falls below a preset water level. When a warning is displayed on the water level warning display unit, the user of the vehicle unit can immediately take measures such as repairing the vehicle unit.

[0056] In addition, users of the vehicle unit can easily check for any leaks of cooling water or fire extinguishing water inside the frame member 1300 via the water level display unit and the water level warning display unit.

[0057] The frame member 1300 may be equipped with a temperature sensor (not shown) that can check the temperature of the cooling water or fire extinguishing water contained in the frame member 1300. The vehicle device may be equipped with a temperature display unit (not shown) that receives data related to the temperature of the cooling water or fire extinguishing water from the temperature sensor and displays the temperature. Through the temperature display unit, the user of the vehicle device can check the temperature of the cooling water or fire extinguishing water.

[0058] In addition, the vehicle unit may be equipped with a temperature warning display unit, which can notify the user of the vehicle unit when the temperature of the cooling water or fire extinguishing water contained in the frame member 1300 exceeds a preset temperature. When a warning is displayed on the temperature warning display unit, the user of the vehicle unit can immediately take measures such as repairing the vehicle unit.

[0059] A transparent glass (not shown) may be provided on the side surface of the frame member 1300, which allows visual confirmation of the remaining amount of cooling water or fire extinguishing water contained in the frame member 1300. Therefore, the user or mechanic of the vehicle device can directly and visually inspect the remaining amount of cooling water or fire extinguishing water contained in the frame member 1300.

[0060] The frame member 1300 may be provided with a hose (not shown) for injecting or discharging cooling water or fire extinguishing water into or from the frame member 1300. The hose may be connected to the frame member 1300 via an opening / closing part, or it may be connected directly to the frame member 1300 without an opening / closing part.

[0061] The frame member 1300 can be welded and joined to the battery pack cover 1200. The frame member 1300 can be more reliably fixed to the battery pack cover 1200 by the welding and joining process between the frame member 1300 and the battery pack cover 1200, thereby ensuring the mechanical rigidity of the battery pack 1000.

[0062] Welding-related factors such as welding method, welding area and welding flux can be appropriately determined by taking into account the size of battery pack 1000, the size and weight of frame member 1300, and the material properties of battery pack 1000 and frame member 1300. Figure 5 This is a plan view showing a battery pack 1000 according to an embodiment of the present disclosure. Specifically, Figure 5 This is a plan view of battery pack 1000 as viewed along the y-axis in the xz plane. Figure 6 It shows along Figure 4 A cross-sectional view of the section cut by the cutting line A-A'. Figure 9 It shows along Figure 4 A cross-sectional view of the section cut by the cutting line B-B'.

[0063] Reference Figures 4 to 6 and Figure 9 The frame member 1300 may be a tubular member having a cavity portion 1300a and extending in one direction. However, the frame member 1300 in this disclosure is not limited to a tubular form, and may be used as long as it has the shape to hold a liquid such as cooling water or fire extinguishing water.

[0064] The cavity 1300a may contain cooling water or fire extinguishing water. The cooling water or fire extinguishing water may be one or a mixture of known cooling water or fire extinguishing water, and any known cooling water or fire extinguishing water may be used, as long as it is kept in the cavity 1300a inside the frame member 1300 and thus able to release the heat of the battery cell 100.

[0065] Figure 7 This is a cross-sectional view of a battery pack 1000 according to another embodiment of the present disclosure.

[0066] Reference Figure 7 According to another embodiment of this disclosure, the frame member 1300 may include a TIM pad 1400 abutting against the battery pack cover 1200. The TIM pad 1400 is disposed between the frame member 1300 and the battery pack cover 1200, so that heat from the battery pack cover 1200 can be effectively transferred to the frame member 1300. This allows the surface temperature of the battery pack 1000 to be effectively reduced to prevent ignition of the surface of the battery pack 1000, thereby preventing flame leakage.

[0067] The types of TIM pads 1400 are varied, such as thermal grease, heat sinks, metal plates, and thermally conductive adhesives, and any known TIM pad can be used as long as it can transfer heat from the battery pack cover 1200 to the frame member 1300.

[0068] Figure 8 This is a cross-sectional view of a battery pack 1000 according to another embodiment of the present disclosure.

[0069] Reference Figure 8 According to another embodiment of the present disclosure, the battery pack 1000 may include tape 1500 located between the frame member 1300 and the TIM pad 1400. The battery pack 1000 includes tape 1500 that can be secured between the frame member 1300 and the TIM pad 1400, thereby ensuring the mechanical rigidity of the battery pack 1000 in the event of vibration and impact, such as in a vehicle.

[0070] The material, area, and thickness of the tape 1500 can be appropriately determined by taking into account the size, area, weight, material properties, required adhesive force, and thermal conductivity of the frame component 1300 and the TIM pad 1400.

[0071] Refer again Figures 3 to 6 The frame member 1300 may include one or more valves 1600 for discharging cooling water or fire extinguishing water.

[0072] In the event of thermal runaway, the cooling water or fire extinguishing water discharged through valve 1600 can be evaporated by the heat on the surface of the battery pack. By evaporating the cooling water or fire extinguishing water, that is, by changing the phase of the cooling water or fire extinguishing water from liquid to gas, the surface heat of the battery pack is carried away, thereby reducing the surface temperature of the battery pack. Therefore, it can prevent the surface of the battery pack from igniting, thus preventing flames from flowing out.

[0073] The number, location, and type of valves 1600 can be appropriately determined by taking into account the size of the battery pack 1000 and the capacity of the cooling water or fire extinguishing water in the frame component 1300.

[0074] Valve 1600 can automatically discharge cooling water or fire extinguishing water when linked with water level and temperature sensors in frame member 1300.

[0075] Figure 11 This is a partial perspective view showing the outlet 1700 of the valve 1600 included in the battery pack 1000. Figure 12 It shows the chassis 10000 along Figure 4 A cross-sectional view of the section cut by the cutting line C-C'.

[0076] Reference Figure 11 and Figure 12 Valve 1600 may include a discharge port 1700 toward battery pack cover 1200.

[0077] Since the outlet 1700 of valve 1600 faces the battery pack cover 1200, the cooling water or fire extinguishing water discharged from the outlet 1700 of valve 1600 can mix with the exhaust gas discharged from the battery pack 1000. As a result, the concentration of flammable substances in the gas diffused within the chassis 10000 can be reduced, thereby preventing the surface of the battery pack 1000 from igniting and further preventing an explosion within the chassis 10000 due to fire.

[0078] The discharge port 1700 can be oriented along the longer side of the width of the battery pack 1000. (See again...) Figure 9 The frame member 1300 may include a mounting portion 1800 having a mounting hole 1800a formed therein. A mounting bolt 1900 may pass through the mounting hole 1800a and be fastened to at least one of the battery pack cover 1200 or the battery pack frame 1100. That is, the mounting portion 1800 includes a mounting hole.

[0079] Furthermore, the battery pack cover 1200 includes fastening holes (not shown) at locations corresponding to mounting holes 1800a. With mounting holes 1800a and fastening holes aligned, mounting bolts 1900 passing through them are tightened, securing the frame member 1300 to the battery pack 1000. As an example, mounting bolts 1900 can be tightened to the battery pack cover 1200. As another example, mounting bolts 1900 can be tightened to both the battery pack cover 1200 and the battery pack frame 1100. As an example, the battery pack frame 1100 may include vertical beams for dividing the battery cells 100 into multiple sections. For secure tightening, mounting bolts 1900 can pass through mounting holes 1800a and the fastening holes in the battery pack cover 1200, and then be tightened to the vertical beam. Alternatively, mounting bolts 1900 can pass through the vertical beam and then be bolted to individual nut members.

[0080] For effective fastening, the mounting portion 1800 and mounting bolt 1900 applied to each frame member 1300 are preferably formed in multiples.

[0081] Figure 10 This is a cross-sectional view of a battery pack according to another embodiment of the present disclosure.

[0082] Reference Figure 10 According to another embodiment of the present disclosure, the frame member 1300 may include a first cavity portion 2000 and a second cavity portion 2100 containing cooling water or fire extinguishing water.

[0083] The first cavity 2000 and the second cavity 2100 may each include a first opening / closing section (not shown) and a second opening / closing section (not shown). The user of the vehicle device may, depending on the remaining amount of cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100, inject cooling water or fire extinguishing water into either the first cavity 2000 and the second cavity 2100, or discharge cooling water or fire extinguishing water from either the first cavity 2000 and the second cavity 2100, or from either the first cavity 2000 and the second cavity 2100.

[0084] The first cavity 2000 and the second cavity 2100 may each be equipped with a first water level sensor (not shown) and a second water level sensor (not shown). The vehicle device may be equipped with a first water level display unit and a second water level display unit, which receive data related to the water level of the cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100 from the first water level sensor and display the water level. Through the first water level display unit and the second water level display unit, the user of the vehicle device can check the water level of the cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100, respectively.

[0085] Furthermore, the vehicle device may be equipped with a first water level warning display unit and a second water level warning display unit, which can notify the user of the vehicle device when the water level of the cooling water or fire extinguishing water in the first cavity 2000 or the second cavity 2100 exceeds or falls below a preset water level. If a warning is displayed on both the first and second water level warning display units, or on either the first or second water level warning display unit, the user of the vehicle device can immediately take measures such as vehicle device maintenance.

[0086] In addition, the user of the vehicle device can easily check whether there is any leakage of cooling or fire extinguishing water in the frame member 1300 via the first water level display unit, the second water level display unit, the first water level warning display unit, and the second water level warning display unit.

[0087] The first cavity 2000 and the second cavity 2100 may each be equipped with a first temperature sensor (not shown) and a second temperature sensor (not shown). The vehicle device may include a first temperature display unit and a second temperature display unit, which receive and display data related to the temperature of the cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100, respectively, from the first and second temperature sensors. Through the first and second temperature display units, the user of the vehicle device can check the temperature of the cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100, respectively.

[0088] Furthermore, the vehicle device may be equipped with a first temperature warning display unit and a second temperature warning display unit, which can notify the user of the vehicle device when the temperature of the cooling water or fire extinguishing water in the first cavity 2000 or the second cavity 2100 exceeds or falls below a preset temperature. If a warning is displayed on both the first and second temperature warning display units, or if a warning is displayed on either the first or second temperature warning display unit, the user of the vehicle device can immediately take measures such as repairing the vehicle device.

[0089] In addition, the user of the vehicle device can easily check whether there is any leakage of cooling water or fire extinguishing water in the frame member 1300 via the first temperature display unit, the second temperature display unit, the first temperature warning display unit, and the second temperature warning display unit.

[0090] The first cavity 2000 and the second cavity 2100 may be provided with a first hose and a second hose, which are used to inject cooling water or fire extinguishing water into the first cavity 2000 and the second cavity 2100 respectively, or to discharge cooling water or fire extinguishing water from the first cavity 2000 and the second cavity 2100. The first hose and the second hose may communicate with the first cavity 2000 and the second cavity 2100 via a first opening / closing part and a second opening / closing part, or they may communicate directly with the frame member 1300 without going through the first opening / closing part and the second opening / closing part.

[0091] The first cavity 2000 and the second cavity 2100 may each be equipped with a valve 1600. Depending on the temperature or remaining amount of cooling water or fire extinguishing water in the first cavity 2000 and the second cavity 2100, each valve 1600 can independently discharge cooling water or fire extinguishing water. Specifically, regardless of whether the valve 1600 in the second cavity 2100 is operated, only the valve 1600 in the first cavity 2000 can be operated to discharge the cooling water or fire extinguishing water from the first cavity 2000.

[0092] The mounting portion 1800 can be located between the first cavity portion 2000 and the second cavity portion 2100. That is, the first cavity portion 2000 and the second cavity portion 2100 can be separated by the mounting portion 1800.

[0093] Figure 13 This is a cross-sectional view of chassis 10000 according to another embodiment of this disclosure.

[0094] Reference Figure 12 and Figure 13 According to another embodiment of the present disclosure, the vehicle device may include a battery pack 1000.

[0095] The frame member 1300 can be secured to each of the battery pack cover 1200 and the chassis 10000 inside the vehicle assembly. Therefore, even in the event of vibration or impact to the vehicle assembly, the frame member 1300 is secured, thereby ensuring mechanical rigidity and preventing fire inside the chassis 10000.

[0096] like Figure 12 As shown, the frame member 1300 can be fixed to the battery pack cover 1200 between the battery pack cover 1200 and the chassis 10000 inside the vehicle assembly. Specifically, the frame member 1300 can be fixed to both the battery pack cover 1200 and the chassis 10000 inside the vehicle assembly. Therefore, the frame member 1300 can be fixed to each of the battery pack cover 1200 and the chassis 10000 inside the vehicle assembly.

[0097] Through surface contact between the chassis 10000 and the frame member 1300, the frame member 1300 can be fixed to the chassis 10000 while minimizing the space between the upper ends. In this case, a gasket (not shown) or similar material can be provided between the frame member 1300 and the chassis 10000.

[0098] The chassis 10000 may include a recess 11000 having a recess shape corresponding to the protrusion shape of the mounting bolt 1900.

[0099] In addition, the frame member 1300 can be fixed to the chassis 10000 by bolt / nut connection, but is not limited thereto.

[0100] Although not shown in the figure, the frame members can be fixed to the chassis inside the vehicle unit only between the battery pack cover and the chassis inside the vehicle unit.

[0101] In the above implementation, expressions indicating directions such as "front," "back," "left," "right," "up," and "down" have been used. These expressions are for descriptive convenience only and may vary, for example, depending on the position of the target object or the observer.

[0102] While embodiments of the present disclosure have been described in detail, the technical scope of the present disclosure is not limited to the embodiments, but also includes various modifications and improvements made by those skilled in the art using the concepts defined in the appended claims.

[0103] Description of reference numerals in the attached figures

[0104] 1000: Battery pack

[0105] 1100: Battery pack frame

[0106] 1200: Battery pack cover

[0107] 1300: Frame component

[0108] 1300a: Cavity section

[0109] 1400: TIM pad

[0110] 1500: Tape

[0111] 1600: Valve

[0112] 1700: Emission outlet

[0113] 10000: Chassis

Claims

1. A battery pack, the battery pack comprising: Multiple battery cells; A battery pack frame, wherein the battery cells are directly mounted to the battery pack frame or the battery cells are mounted to the battery pack frame while being housed in a module frame. A battery pack cover that covers the battery pack frame; as well as One or more frame members, said one or more frame members being disposed on the battery pack cover and containing cooling water or fire extinguishing water.

2. The battery pack according to claim 1, in, The battery pack frame is a tubular component having a cavity and extending in one direction, and the cooling water or the fire extinguishing water is contained within the cavity.

3. The battery pack according to claim 1, in, The frame component includes a thermal interface material (TIM) pad that abuts against the battery pack cover.

4. The battery pack according to claim 3, The battery pack includes tape located between the frame member and the TIM pad.

5. The battery pack according to claim 1, in, The frame component includes one or more valves for discharging the cooling water or the fire extinguishing water.

6. The battery pack according to claim 5, in, The valve includes a discharge port facing the battery pack cover.

7. The battery pack according to claim 1, in, The frame member includes a mounting portion, in which mounting holes are formed, and Mounting bolts pass through the mounting holes to secure the battery pack cover or the battery pack frame to at least one of them.

8. The battery pack according to claim 7, in, The frame component includes a first cavity and a second cavity containing the cooling water or the fire extinguishing water, and the mounting portion is located between the first cavity and the second cavity.

9. The battery pack according to claim 1, in, The frame members are welded and joined to the battery pack cover.

10. A vehicle apparatus comprising a battery pack according to claim 1. in, The frame member is secured between the battery pack cover and the chassis inside the vehicle device to each of the battery pack cover and the chassis inside the vehicle device.

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