Vehicle comprising battery pack

Abstract

According to exemplary embodiments of the present invention, a vehicle is provided. The vehicle comprises: a battery pack including a plurality of battery cell assemblies; a temperature controller disposed on the outside of the battery pack; and a chassis accommodating the battery pack and the temperature controller, wherein the temperature controller may include a phase change material.

Description

Vehicles containing battery packs

[0001] The present invention relates to a vehicle, and more particularly, to a vehicle including a battery pack.

[0002] This application claims the benefit of Korean Application No. 10-2024-0093384, filed July 6, 2024, which is incorporated herein by reference in its entirety.

[0003] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. They are widely used as a power source for various wireless devices, including handsets, laptops, and cordless vacuum cleaners. Recently, improved energy density and economies of scale have dramatically reduced the per-unit manufacturing cost of secondary batteries. Furthermore, as the range of battery electric vehicles (BEVs) has increased to match that of fuel-powered vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility.

[0004] The technological development trend for secondary batteries for mobility is improving energy density and safety. The safety of secondary batteries for mobility is crucial, as it directly impacts the lives of passengers. Secondary battery safety can be achieved through mechanical robustness, reliable electrical insulation, and delayed heat transfer in the event of thermal runaway.

[0005] The problem that the technical idea of ​​the present invention seeks to solve is to provide a vehicle with improved safety.

[0006] The technical idea of ​​the present invention aims to solve a problem by providing a vehicle with improved performance and reliability.

[0007] The technical idea of ​​the present invention aims to solve a problem by providing a vehicle with improved convenience.

[0008] According to exemplary embodiments of the present invention for solving the above-described problem, a vehicle is provided. The vehicle includes a battery pack including a plurality of battery cell assemblies; a temperature controller disposed externally of the battery pack; and a chassis housing the battery pack and the temperature controller, wherein the temperature controller may include a phase change material.

[0009] The above temperature controller may be voice feedback based.

[0010] When the temperature of the battery pack exceeds a reference temperature, the temperature controller can absorb heat.

[0011] If the temperature of the battery pack is below a reference temperature, the temperature controller can release heat.

[0012] The battery pack includes a pack housing that accommodates the plurality of battery cell assemblies, and the temperature controller can be attached to one surface of an outer wall of the pack housing.

[0013] Each of the plurality of battery cell assemblies includes a plurality of battery cells, and the temperature controller can be spaced apart from the plurality of battery cells with the pack housing interposed therebetween.

[0014] The battery pack may include a pack housing that accommodates the plurality of battery cell assemblies, the temperature controller may be a pad on an outer wall of the pack housing, and the pad may include a pad case and the phase change material packaged by the pad case.

[0015] The above pad case may comprise one selected from silicone, polyurethane, polypropylene, metal, and stainless steel.

[0016] The temperature controller may include a coating layer applied to one of the battery pack and the chassis, wherein the coating layer may include a capsule containing the phase change material and a binder mixed with the capsule.

[0017] The temperature controller may include a polymer film sealing the phase change material.

[0018] The temperature controller may include a thermally conductive compound layer and a phase change material dispersed within the thermally conductive compound layer.

[0019] According to exemplary embodiments of the present invention, the vehicle may include a temperature controller disposed outside the battery pack to manage the temperature of the battery pack by absorbing or releasing heat.

[0020] According to exemplary embodiments of the present invention, a vehicle with enhanced safety can be provided.

[0021] According to exemplary embodiments of the present invention, a vehicle with improved performance and reliability can be provided.

[0022] According to embodiments of the technical idea of ​​the present invention, a vehicle with improved convenience can be provided.

[0023] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0024] FIG. 1 is a drawing showing a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0025] FIG. 2 is a drawing showing a part of a configuration of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0026] FIG. 3 is a drawing showing a part of a configuration of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0027] FIG. 4 is a diagram showing heat movement within a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0028] FIG. 5 is a diagram showing heat movement within a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0029] FIG. 6 is an enlarged cross-sectional view showing a portion of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0030] FIG. 7 is an enlarged cross-sectional view showing a portion of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0031] FIG. 8 is an enlarged cross-sectional view showing a portion of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0032] FIG. 9 is an enlarged cross-sectional view showing a portion of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0033] FIG. 10 is an enlarged cross-sectional view showing a portion of a vehicle including a battery pack according to exemplary embodiments of the technical idea of ​​the present invention.

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0035] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0036] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0037] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0038]

[0039] (Example 1)

[0040] FIG. 1 is a drawing showing a vehicle (1000) including a battery pack (100) according to exemplary embodiments of the technical idea of ​​the present invention.

[0041] Referring to FIG. 1, a vehicle (1000) may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle, and may include a battery pack (100) according to an embodiment of the present invention. The vehicle (1000) may include a four-wheeled vehicle and a two-wheeled vehicle. The vehicle (1000) may operate by receiving power from the battery pack (100) according to an embodiment of the present invention. Hereinafter, the battery pack (1000) will be described with reference to FIGS. 2 to 5 together.

[0042]

[0043] FIG. 2 is a drawing showing a partial configuration of a vehicle including a battery pack (100) according to exemplary embodiments of the technical idea of ​​the present invention. Specifically, FIG. 2 is a cross-sectional view showing a battery pack (100), a temperature controller (200), and a chassis (300).

[0044] FIG. 3 is a drawing showing a partial configuration of a vehicle including a battery pack (100) according to exemplary embodiments of the technical idea of ​​the present invention. Specifically, FIG. 3 is a plan view of the battery pack (100).

[0045] Referring to FIGS. 2 and 3, the vehicle may include a battery pack (100), a temperature controller (200), and a chassis (300).

[0046] A battery pack (100) may include a pack housing (110) and a plurality of battery cell assemblies (120). The battery pack (100) may be a final product mounted in an application such as a vehicle.

[0047] The pack housing (110) may provide a space for mounting battery cell assemblies (120). The pack housing (110) may include a base plate (111), side walls (112, 113, 114, 115), a center beam (116), and cross beams (117).

[0048] Here, the first direction (X direction) and the second direction (Y direction) may be substantially parallel to the mounting surface of the base plate (111) (i.e., the surface facing the battery cell assembly (120)), and the third direction (Z direction) may be substantially perpendicular to the mounting surface of the base plate (111).

[0049] The base plate (111) and the side walls (112, 113) may each be provided by an extrusion process. The extrusion direction of each of the base plate (111) and the side walls (112, 113) may be the first direction (X direction). The side walls (114, 115) may also be provided by an extrusion process. The side walls (112, 113, 114, 115) may be substantially perpendicular to the base plate (111).

[0050] According to exemplary embodiments, the base plate (111) and side walls (112, 113) may be joined by friction stir welding. The base plate (111) may include a plurality of unit plates joined by friction stir welding.

[0051] The center beam (116) can extend in the first direction (X direction). The center beam (116) can be interposed between the side walls (112, 113). The center beam (116) can be included in a center plate, which is one of a plurality of unit plates that are friction stir welded to each other. Accordingly, the center beam (116) can be formed together with the center plate, and the center beam (116) can be a continuous element integrally formed with the center plate.

[0052] The cross beams (117) can extend in the second direction (Y direction). The cross beams (117) can be interposed between the side walls (114, 115).

[0053] The base plate (111) may include a plurality of cooling channels. The plurality of cooling channels may provide passages for the movement of a coolant, such as water, for example. The plurality of cooling channels may be formed by an extrusion process. The plurality of cooling channels may extend in a first direction (X direction). The plurality of cooling channels may be spaced apart in a second direction (Y direction).

[0054] A plurality of battery cell assemblies (120) may be arranged on a base plate (111) of a pack housing (110). The base plate (111) may support the plurality of battery cell assemblies (120). Side walls (112, 113, 114, 115) may horizontally surround the plurality of battery cell assemblies (120). The side walls (112, 113, 114, 115) may protect the plurality of battery cell assemblies (120). The plurality of battery cell assemblies (120) may be arranged in a space defined by cross beams (117) on the base plate (111).

[0055] The battery cell assembly (120) may further include a plurality of battery cells (121) arranged in a first direction (X direction) and pads (122) arranged between the plurality of battery cells (121). The pads (122) are arranged between the plurality of battery cells (121) in the first direction (X direction) and may overlap the plurality of battery cells (121) in the first direction (X direction). For example, the pads (122) may be parallel to the plurality of battery cells (121).

[0056] The pad (122) can absorb the swelling of the plurality of battery cells (121). The pad (122) can include an elastic material. The pad (122) can include PU (Poly Urethane). The pad (122) can also include a fire-resistant material.

[0057] The battery pack (100) may further include a pack lead (119) coupled to side walls (112, 113, 114, 115) of the pack housing (110). The pack lead (119) may cover elements mounted inside the battery pack (100), such as a plurality of battery cell assemblies (120) and electrical components. The pack lead (119) may be fixed to the pack housing (110) by a mechanical coupling means, such as bolting.

[0058] The arrangement of the plurality of battery cell assemblies (120) in FIG. 3 can be referred to as a 3 * 2 arrangement. The arrangement of the plurality of battery cell assemblies (120) disclosed in FIG. 3 is a non-limiting example and does not limit the technical idea of ​​the present invention in any sense. A person skilled in the art will be able to easily arrive at a plurality of battery cell assemblies (120) arranged in M ​​* N (wherein, M and N are each integers greater than or equal to 2) based on the description herein.

[0059] The battery pack (100) may further include a Battery Management System (BMS). The BMS may be configured to monitor, balance, and control the battery pack (100). Monitoring of the battery pack (100) may include measuring voltage and current of specific nodes within a plurality of battery cell assemblies (120) and measuring temperature of set locations within the battery pack (100). The battery pack (100) may include measuring instruments for measuring the voltage, current, and temperature described above.

[0060] Balancing of a battery pack (100) is an operation that reduces the deviation between multiple battery cell assemblies (120). Control of the battery pack (100) includes preventing overcharge, overdischarge, and overcurrent. Through monitoring, balancing, and control, the battery pack (100) can operate under optimal conditions, thereby preventing shortening of the lifespan of each of the multiple battery cell assemblies (120).

[0061] The battery pack (100) may further include additional electrical components, such as a cooling device, a PRA (Power Relay Assembly), and a safety plug. The cooling device may include a cooling fan. The cooling fan may prevent overheating of each of the plurality of battery cell assemblies (120) by circulating air inside the battery pack (100). The PRA may be configured to supply or cut off power from the high-voltage battery to an external load (e.g., a vehicle motor). The PRA may protect the plurality of battery cell assemblies (120) and the external load (e.g., a vehicle motor) by cutting off power supply to the external load (e.g., a vehicle motor) in a situation where an abnormal voltage, such as a voltage surge, occurs. Additional electrical components may be interposed between the plurality of battery cell assemblies (120) and the sidewall (115). The space between the battery cell assemblies (120) and the sidewall (115) may also be referred to as an electrical component mounting area.

[0062] The battery pack (100) may further include a plurality of inter-busbars configured to electrically connect a plurality of battery cell assemblies (120). The plurality of battery cell assemblies (120) may be connected in series by the plurality of inter-busbars. Accordingly, the battery pack (100) may be configured to output a high voltage to an external load (e.g., a vehicle motor).

[0063] The temperature controller (200) may be positioned outside the battery pack (100). For example, the temperature controller (200) may be positioned at the bottom of the battery pack (100). The temperature controller (200) may be positioned under the base plate (111). Alternatively, as illustrated, the temperature controller (200) may be positioned at the top of the battery pack (100). The temperature controller (200) may be positioned adjacent to the battery cell assembly (120). The temperature controller (200) may be positioned between the battery pack (100) and the chassis (300). The temperature controller (200) may be positioned between the base plate (111) and the chassis (300).

[0064] The temperature controller (200) can be in contact with the battery pack (100). The temperature controller (200) can be in contact with the base plate (111) of the battery pack (100). The temperature controller (200) can be attached to one surface of the pack housing (110). For example, the temperature controller (200) can be attached to one surface of the base plate (111).

[0065] The temperature controller (200) may be spaced apart from the battery cell assembly (120) with the pack housing (110) interposed therebetween. The temperature controller (200) may be spaced apart from the battery cell assembly (120) with the base plate (111) interposed therebetween. The temperature controller (200) may be spaced apart from the battery cell (121) with the base plate (111) interposed therebetween. The temperature controller (200) may be adjacent to the chassis (300).

[0066] The temperature controller (200) may include a phase change material (PCM). A phase change material may refer to a material that changes phase by absorbing or releasing heat. For example, a phase change material may change phase by absorbing heat. For example, a phase change material may change phase by releasing heat.

[0067] The chassis (300) can accommodate a battery pack (100) and a temperature controller (200). The shape of the chassis (300) is not limited to the example shown. The chassis (300) may refer to a structure that supports and connects the main components of the vehicle (1000) of FIG. 1. The chassis (300) may include an external frame of the vehicle (1000) of FIG. 1.

[0068]

[0069] FIG. 4 is a diagram illustrating heat transfer within a vehicle including a battery pack (100) according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 4 is a diagram illustrating heat transfer between a battery cell assembly (120) and a temperature controller (200).

[0070] FIG. 5 is a diagram illustrating heat transfer within a vehicle including a battery pack (100) according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 5 is a diagram illustrating heat transfer between a battery cell assembly (120) and a temperature controller (200).

[0071] The temperature controller (200) may be voice feedback-based. Specifically, if the temperature of the battery pack (100) rises, the temperature controller (200) may act to lower the temperature. Conversely, if the temperature of the battery pack (100) falls, the temperature controller (200) may act to raise the temperature. For example, heat may flow between the battery cell assembly (120) and the temperature controller (200) within the vehicle.

[0072] Referring to FIG. 4, when the battery cell assembly (120) emits heat, the temperature controller (200) can absorb the heat. For example, when the battery cell assembly (120) emits heat, the heat can be transferred to the temperature controller (200) positioned adjacent thereto. As described above, the temperature controller (200) can include a phase change material, and the phase change material can absorb heat and change phase. For example, the phase change material can change from a solid to a liquid or a gas, or from a liquid to a gas. As a result, the temperature inside the battery pack (100) can be lowered.

[0073] For example, when the temperature of the battery pack (100) exceeds a reference temperature, the temperature controller (200) may absorb heat. For example, the temperature controller (200) may absorb heat generated from the battery cell (121) to lower the temperature of the battery pack (100). The reference temperature may be a value preset for the stability of the battery pack (100). Alternatively, the reference temperature may not be a specific value, but may refer to the initial temperature of the battery pack (100).

[0074] In particular, when a thermal runaway event occurs in a battery cell (121), heat may be transferred to an adjacent battery cell (121), and the temperature controller (200) may absorb the heat and delay the heat transfer.

[0075] Referring to FIG. 5, a temperature controller (200) may emit heat and transfer it to a battery cell assembly (120). As described above, the temperature controller (200) may include a phase change material, which emits heat and may change phase. For example, the phase change material may change from a gas to a liquid or solid, or from a liquid to a solid. As a result, the temperature of the battery pack (100) may increase.

[0076] For example, if the temperature of the battery pack (100) is below a reference temperature, the temperature controller (200) may release heat. For example, the temperature controller (200) may release heat to increase the temperature of the battery pack (100).

[0077] The vehicle (1000) described with reference to FIGS. 1 to 5 may include a temperature controller (200) disposed outside the battery pack (100) and including a phase change material. As a result, the temperature of the battery pack (100) can be managed by absorbing or releasing heat through phase change.

[0078] In addition, since the temperature controller (200) is placed outside the battery pack (100), interference with battery cells (121), etc. placed inside the battery pack (100) may not be considered. As a result, the convenience and freedom of placement of the temperature controller (200) may be improved.

[0079] According to embodiments of the technical idea of ​​the present invention, a vehicle (1000) including a battery pack (100) with improved safety can be provided.

[0080] According to embodiments of the technical idea of ​​the present invention, a vehicle (1000) including a battery pack (100) with improved performance and reliability can be provided.

[0081] According to embodiments of the technical idea of ​​the present invention, a vehicle (1000) including a battery pack (100) with improved convenience can be provided.

[0082]

[0083] (Example 2)

[0084] FIG. 6 is an enlarged cross-sectional view illustrating a portion of a vehicle including a battery pack according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 6 is an enlarged cross-sectional view corresponding to area A of FIG. 2, illustrating a temperature controller (201) external to the battery pack (100).

[0085] Referring to FIGS. 2 and 6, the vehicle (1000) may include a temperature controller (201) positioned outside the battery pack (100).

[0086] In some embodiments, the temperature controller (201) may be a pad disposed outside the battery pack (100). Specifically, the temperature controller (201) may be a pad on an outer wall of the pack housing (110) of the battery pack (100). For example, the temperature controller (201) may be a pad under the base plate (111) of the battery pack (100). The temperature controller (201) may include a pad case (201C) and a phase change material (201I). The phase change material (201I) may be packaged by the pad case (201C). The phase change material (201I) may be surrounded by the pad case (201C) and may not leak outside the pad case (201C). In particular, even if the phase of the phase change material (201I) changes by absorbing or releasing heat, it may not leak outside the pad case (201C).

[0087] For example, the pad case (201C) may include one selected from silicone, polyurethane, polypropylene, metal, and stainless steel.

[0088]

[0089] (Example 3)

[0090] FIG. 7 is an enlarged cross-sectional view illustrating a portion of a vehicle including a battery pack according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 7 is an enlarged cross-sectional view corresponding to area A of FIG. 2, illustrating a temperature controller (202) external to the battery pack (100).

[0091] Referring to FIGS. 2 and 7, the vehicle (1000) may include a temperature controller (202) positioned outside the battery pack (100).

[0092] In some embodiments, the temperature controller (202) may be a coating layer. Specifically, the temperature controller (202) may be a coating layer applied on the battery pack (100). For example, the temperature controller (202) may be a coating layer applied on the outer wall of the pack housing (110) of the battery pack (100). Specifically, the temperature controller (202) may be a coating layer applied on the chassis (300). For example, the temperature controller (202) may be a coating layer applied on the inner wall of the chassis (300).

[0093] Specifically, the temperature controller (202) may include a capsule (202C) containing a phase change material and a binder (202B) mixed with the capsule (202C). The capsule (202C) may include a polymer shell (202C_1) and a phase change material (202C_2). The capsule (202C) may be, for example, spherical and may be composed of a phase change material (202C_2) inside and a polymer shell (202C_1) surrounding the phase change material. The capsule (202C) may be mixed with the binder (202B) and applied to a location to be coated, and the mixture may be dried to form a coating layer. For example, a mixture of the capsule (202C) and the binder (202B) may be applied on an outer wall of a pack housing (110) of a battery pack (100), and this may be dried to form the temperature controller (202). For example, a mixture of a capsule (202C) and a binder (202B) can be applied on the inner wall of the chassis (300), which can be dried to form a temperature controller (202).

[0094] The phase change material (202C_2) may be encapsulated by the polymer shell (202C_1) and may not leak outside the capsule (202C). In particular, even if the phase of the phase change material (202C_2) changes by absorbing or releasing heat, it may not leak outside the capsule (202C).

[0095] The capsule (202C) may have fixing and / or adhesive properties by the binder (202B). For example, the capsule (202C) containing the phase change material (202C_2) may be adhered or fixed on the outer wall of the pack housing (110) or on the inner wall of the chassis (300) by the binder (202B).

[0096]

[0097] (Example 4)

[0098] FIG. 8 is an enlarged cross-sectional view illustrating a portion of a vehicle including a battery pack according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 8 is an enlarged cross-sectional view corresponding to area A of FIG. 2, illustrating a temperature controller (203) external to the battery pack (100).

[0099] Referring to FIGS. 2 and 8, the vehicle (1000) may include a temperature controller (203) positioned outside the battery pack (100).

[0100] In some embodiments, the temperature controller (203) may include a laminated form of a plurality of polymer films. Specifically, the temperature controller (203) may include a plurality of first films (203F1) and second films (203F2) that are alternately laminated. The first film (203F1) may be a polymer film and may be formed by alternately laminating the second film (203F2) that includes a phase change material. The first film (203F1) may not include a phase change material. In other embodiments, the first film (203F1) may include a phase change material. The second film (203F2) may be sealed to prevent the phase change material from leaking.

[0101]

[0102] (Example 5)

[0103] FIG. 9 is an enlarged cross-sectional view illustrating a portion of a vehicle including a battery pack according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 9 is an enlarged cross-sectional view corresponding to area A of FIG. 2, illustrating a temperature controller (204) external to the battery pack (100).

[0104] Referring to FIGS. 2 and 9, the vehicle (1000) may include a temperature controller (204) positioned outside the battery pack (100).

[0105] In some embodiments, the temperature controller (204) may include an outer layer (204OF) and an inner layer (204IF) in the form of a polymer film. Specifically, the inner layer (204IF) may be formed by including a phase change material. For example, the inner layer (204IF) may be a polymer film including a phase change material. The outer layer (204OF) may not include a phase change material and may be a layer for laminating the inner layer (204IF). The outer layer (204OF) may laminate the phase change material therebetween to prevent leakage of the phase change material.

[0106]

[0107] (Example 6)

[0108] FIG. 10 is an enlarged cross-sectional view illustrating a portion of a vehicle including a battery pack according to exemplary embodiments of the technical concept of the present invention. Specifically, FIG. 10 is an enlarged cross-sectional view corresponding to area A of FIG. 2, illustrating a temperature controller (205) external to the battery pack (100).

[0109] Referring to FIGS. 2 and 10, the vehicle (1000) may include a temperature controller (205) positioned outside the battery pack (100).

[0110] In some embodiments, the temperature controller (205) may include a compound layer (205C) and a phase change material (205P) dispersed within the compound layer (205C). For example, the compound layer (205C) may include a high viscosity grease or paste. The phase change material (205P) may include a capsule form.

[0111] Specifically, a compound layer (205C) in which a phase change material (205P) is dispersed can be applied to the outside of a battery pack (100) to form a temperature controller (205). By virtue of the compound layer (205C), the phase change material (205P) may not leak. In particular, even if the phase of the phase change material (205P) changes by absorbing or releasing heat, the phase change material (205P) may not leak.

[0112]

[0113] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

A battery pack comprising a plurality of battery cell assemblies; a temperature controller disposed outside the battery pack; and including a chassis accommodating the battery pack and the temperature controller; A vehicle characterized in that the temperature controller comprises a phase change material. In the first paragraph, A vehicle characterized in that the temperature controller is voice feedback-based. In the second paragraph, A vehicle characterized in that when the temperature of the battery pack exceeds a reference temperature, the temperature controller absorbs heat. In the second paragraph, A vehicle characterized in that when the temperature of the battery pack is below a reference temperature, the temperature controller releases heat. In the first paragraph, The battery pack includes a pack housing that accommodates the plurality of battery cell assemblies, A vehicle characterized in that the temperature controller is attached to one surface of the outer wall of the pack housing. In paragraph 5, Each of the plurality of battery cell assemblies includes a plurality of battery cells, A vehicle characterized in that the temperature controller is spaced apart from the plurality of battery cells, with the pack housing interposed therebetween. In the first paragraph, The battery pack includes a pack housing that accommodates the plurality of battery cell assemblies, The above temperature controller is a pad on the outer wall of the pack housing, A vehicle characterized in that the pad comprises a pad case and the phase change material packaged by the pad case. In paragraph 7, A vehicle characterized in that the pad case comprises one selected from silicone, polyurethane, polypropylene, metal, and stainless steel. In the first paragraph, The temperature controller comprises a coating layer applied to one of the battery pack and the chassis, A vehicle characterized in that the coating layer comprises a capsule containing the phase change material and a binder mixed with the capsule. In the first paragraph, A vehicle characterized in that the temperature controller includes a polymer film sealing the phase change material. In the first paragraph, A vehicle characterized in that the temperature controller comprises a heat conductive compound layer and a phase change material dispersed within the heat conductive compound layer.

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