Battery cell array, and battery pack and vehicle including the same

Abstract

This invention relates to a battery cell array capable of improving cooling efficiency, and a battery pack and vehicle including the battery cell array. The battery cell array includes: a plurality of battery cells; and a side frame supporting the plurality of battery cells and forming the edge of the battery cell array, wherein each of the plurality of battery cells is directly cooled at one end along its height direction.

Description

Technical Field

[0001] This disclosure relates to battery cell arrays, battery packs and vehicles including such battery cell arrays, and more specifically, to battery cell arrays capable of improving cooling efficiency, and battery packs and vehicles including such battery cell arrays.

[0002] This application is based on and claims priority to Korean Patent Application No. 10-2024-0191445, filed with the Korean Intellectual Property Office on December 19, 2025, the disclosure of which is incorporated herein by reference in its entirety. Background Technology

[0003] Secondary batteries, highly adaptable to a wide range of products and exhibiting excellent electrical properties such as high energy density, are commonly used not only in portable devices but also in electric vehicles (EVs) or hybrid electric vehicles (HEVs) powered by these batteries. Secondary batteries are gaining attention as a new energy source that enhances environmental friendliness and energy efficiency because they can significantly reduce the use of fossil fuels and produce no byproducts during energy consumption.

[0004] Currently widely used rechargeable batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. A single rechargeable battery cell, or individual battery cell, operates at a voltage of approximately 2.5V to 4.5V. Therefore, if a higher output voltage is required, multiple battery cells can be connected in series to configure a battery pack. Furthermore, depending on the required charge / discharge capacity of the battery pack, multiple battery cells can be connected in parallel to configure the pack. Thus, the number of battery cells included in a battery pack can be varied depending on the required output voltage or the required charge / discharge capacity.

[0005] Meanwhile, traditional battery pack designs primarily employ side cooling methods. Side cooling involves placing cooling pipes or pads on the side surfaces of the battery cells to dissipate heat generated within the cells to the outside. This method is effective in minimizing heat transfer between battery cells and maintaining temperature balance between them.

[0006] However, recently, there has been an increasing demand for battery pack designs utilizing bottom cooling methods. Bottom cooling methods provide a structure that enables uniform heat dissipation and rapid temperature control throughout the battery cell by placing a cooling plate or heat sink at the bottom of the battery cell.

[0007] However, effectively implementing bottom cooling presents various technical challenges, including the structural design of battery cells and battery packs, and design techniques to enhance heat transfer efficiency. In particular, bottom cooling must be designed to maximize cooling efficiency across the entire battery pack while ensuring manufacturing process efficiency and cost-effectiveness.

[0008] Therefore, research is needed on the design of battery modules or battery packs that can effectively apply bottom cooling methods. Summary of the Invention

[0009] Technical issues

[0010] Therefore, this disclosure aims to provide a battery cell array that can utilize a bottom cooling method, as well as a battery pack and a vehicle including the battery cell array.

[0011] Furthermore, this disclosure aims to provide a battery cell array capable of top venting, as well as a battery pack and vehicle including the battery cell array.

[0012] Furthermore, this disclosure aims to provide a battery cell array capable of improving cooling performance, as well as a battery pack and vehicle including the battery cell array.

[0013] Furthermore, this disclosure aims to provide a battery cell array that can maximize space utilization, as well as a battery pack and vehicle including the battery cell array.

[0014] However, the technical problems that this disclosure seeks to solve are not limited to those described above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

[0015] Technical solution

[0016] In one aspect of this disclosure, a battery cell array is provided, the battery cell array comprising: a plurality of battery cells; and a side frame configured to support the plurality of battery cells and form the edge of the battery cell array, wherein the plurality of battery cells are directly cooled at one end of each battery cell in the height direction.

[0017] Furthermore, preferably, one end of each battery cell along the height direction is exposed to the outside to form part of the external shape of the battery cell array.

[0018] Furthermore, preferably, the plurality of battery cells may have venting sections configured to vent at one end opposite to the other end of each battery cell in the height direction, and the battery cell array may have gap spaces formed from the venting sections of the plurality of battery cells at a predetermined height.

[0019] Furthermore, preferably, one end of each battery cell along the height direction can be located at the same position along the height direction as the bottom of the side frame.

[0020] Furthermore, preferably, the multiple battery cells may have an attachment surface that is attached and secured to the side frame.

[0021] Furthermore, preferably, the side frame may include: a pair of sidewalls disposed on the two outermost sides of the plurality of battery cells; and a plurality of side structures disposed between the pair of sidewalls, and the battery cell array may include an adhesive member applied to attach and secure at least one of the plurality of side structures and sidewalls to the plurality of battery cells.

[0022] Furthermore, preferably, the battery cell array may have a coating applied to one end of each battery cell along its height direction.

[0023] Furthermore, preferably, the coating may contain a thermosetting resin.

[0024] Furthermore, preferably, the battery cell array may also include sheet-like members disposed at one end of each battery cell along its height direction and at the bottom of the side frame.

[0025] Furthermore, preferably, the sheet-like member can be an attachable and removable insulating member.

[0026] Furthermore, preferably, the sheet-like members can be attached after one end of each battery cell along the height direction and the bottom of the side frame are insulated.

[0027] In another aspect of this disclosure, a battery pack is also provided, the battery pack comprising: a battery pack housing; and at least one array of battery cells according to the foregoing embodiments.

[0028] Furthermore, preferably, the battery pack may also include a cooling plate disposed in the internal space of the battery pack housing, and the cooling plate may contact and cool one end of each battery cell along the height direction.

[0029] Furthermore, preferably, the cooling plate can be insulated on one surface at one end along the height direction that contacts each battery cell.

[0030] Furthermore, preferably, the cooling plate can be placed at the bottom of the battery cell array and configured to vent air from the top of the battery cell array.

[0031] In another aspect of this disclosure, a vehicle is also provided, the vehicle including at least one battery pack according to the foregoing embodiments.

[0032] Beneficial effects

[0033] As described above, the battery cell arrays according to various embodiments of the present disclosure, as well as the battery packs and vehicles including the battery cell arrays, have the effect of bottom cooling.

[0034] Furthermore, according to the various embodiments described above, a battery cell array capable of top venting, as well as a battery pack and a vehicle including the battery cell array, can be provided.

[0035] Furthermore, according to the various embodiments described above, a battery cell array that can improve cooling performance, as well as a battery pack and a vehicle including the battery cell array, can be provided.

[0036] Furthermore, according to the various embodiments described above, a battery cell array that maximizes space utilization, as well as a battery pack and a vehicle including the battery cell array, can be provided.

[0037] Furthermore, various additional effects can be achieved through the various embodiments of this disclosure. These various effects of this disclosure are described in detail in each embodiment, and effects that can be readily understood by those skilled in the art will not be described in detail further. Attached Figure Description

[0038] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the foregoing disclosure, serve to provide a further understanding of the technical features of the present disclosure. Therefore, the present disclosure should not be construed as being limited to the drawings.

[0039] Figure 1 This is a schematic diagram illustrating a battery cell array according to an embodiment of the present disclosure.

[0040] Figure 2 It is shown Figure 1 Bottom view of the battery cell array.

[0041] Figure 3 It is along Figure 1 A sectional view taken by line A-A'.

[0042] Figure 4 It is shown Figure 3 A magnified view of region Q.

[0043] Figure 5 It is used to illustrate the application to Figure 1 A diagram of the resin layers of the battery cell array.

[0044] Figure 6 It is shown Figure 1 A schematic diagram of the side frame of the battery cell array and the arrangement of multiple battery cells.

[0045] Figure 7 It is used to illustrate the attachment and fixation of multiple battery cells to... Figure 6 A diagram of the side frame.

[0046] Figure 8 This is a schematic diagram illustrating a battery cell array according to another embodiment of the present disclosure.

[0047] Figure 9 It is shown Figure 8 Bottom view of the battery cell array.

[0048] Figure 10 This is a bottom view showing a battery cell array according to yet another embodiment of the present disclosure.

[0049] Figure 11 This is a schematic diagram showing a battery pack including a battery cell array according to an embodiment of the present disclosure.

[0050] Figure 12 This is a schematic diagram illustrating a vehicle including a battery pack according to an embodiment of the present disclosure. Detailed Implementation

[0051] The preferred embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terminology used in the specification and appended claims should not be construed as limited to its general and dictionary meaning, but should be interpreted based on the principle that the inventors are permitted to appropriately define the terminology for the best interpretation, and based on the meaning and concept corresponding to the technical aspects of this disclosure.

[0052] Therefore, the description presented herein is merely a preferred example for illustrative purposes and is not intended to limit the scope of this disclosure. It should be understood that other equivalents and modifications may be made thereto without departing from the scope of this disclosure.

[0053] Furthermore, this disclosure includes various embodiments. For each embodiment, redundant descriptions of substantially the same or similar components will be omitted, and differences will be described.

[0054] Furthermore, to aid in understanding this disclosure, the drawings are not drawn to scale, and the dimensions of some components may be exaggerated. Additionally, the same reference numerals may be assigned to the same components in different embodiments.

[0055] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0056] Furthermore, when a component is referred to as “connected,” “linked,” or “attached” to another component, the component may be directly connected or linked to the other component. However, it should be understood that there may be intermediate components between each component, or each component may be “connected,” “linked,” or “attached” to each other through another component.

[0057] Singular expressions used in this specification include plural expressions unless the context clearly specifies otherwise. In this application, terms such as “comprising” or “including” should not be construed as necessarily including all components or steps described in the specification, and should be construed as meaning that some components or steps may be excluded, or that additional components or steps may be included.

[0058] Throughout this instruction manual, unless otherwise expressly stated, “A and / or B” means A or B, or both A and B.

[0059] In addition, directional terms such as “up,” “down,” “left,” “right,” “front,” and “back” may be used in this specification, but these terms are for convenience of explanation only, and it will be obvious to those skilled in the art that these terms may vary depending on the position, arrangement, or orientation of the target object or the position of the observer.

[0060] Figure 1 This is a schematic diagram illustrating a battery cell array 10 according to an embodiment of the present disclosure. Figure 2 It is shown Figure 1 A bottom view of the battery cell array 10, and Figure 3 It is along Figure 1 A sectional view taken by line A-A'.

[0061] Reference Figures 1 to 3 The battery cell array 10 may include a plurality of battery cells 100 and a side frame 200.

[0062] Multiple battery cells 100 can be configured as secondary batteries, such as cylindrical secondary batteries, pouch secondary batteries, or prismatic secondary batteries. In this embodiment, the multiple battery cells 100 are described as being configured as cylindrical secondary batteries. Multiple battery cells 100 can be arranged in multiples in both the height direction (Y-axis direction) and width direction (X-axis direction) of the battery cell array 10 to achieve a large capacity for the battery cell array 10.

[0063] The side frame 130 can support multiple battery cells 100. The side frame 130 can form the edge of the battery cell array 10.

[0064] The battery cell array 10 of this embodiment can be configured to be cooled at one end of each battery cell 100 along the height direction. For example, the battery cell array 10 can be configured to be directly cooled at the lower end (-Z-axis direction) of each battery cell 100 along the height direction by applying a bottom cooling method.

[0065] As a result, in this embodiment, the lower end (-Z direction) of each battery cell 100 along the height direction can directly contact a separate thermal management medium (e.g., a cooling plate, a heat sink, etc.) to allow heat transfer, thereby enabling uniform cooling across multiple battery cells 100 and effectively preventing damage to the battery cells 100 due to local overheating.

[0066] Furthermore, in this embodiment, by employing a bottom cooling method, the internal cooling pipes required in conventional side cooling methods can be eliminated. This allows for the arrangement of more battery cells 100 within the same volume or the optimization of existing layout structures, thereby maximizing space utilization and increasing energy density.

[0067] At this point, one end of each battery cell 100 along the height direction can be designed to form part of the external shape of the battery cell array 10. For example, by arranging the lower end (-Z direction) of the battery cell 100 along the height direction to be exposed to the outside, it can be in direct contact with the thermal management medium in subsequent processes, thereby maximizing the heat dissipation efficiency of the battery cell array 10.

[0068] One end of each battery cell 100 along the height direction can be designed to be at the same position as the bottom of the side frame 200 along the height direction. For example, the bottom of the side frame 200 (in the -Z-axis direction) and the bottom end (in the -Z-axis direction) of each battery cell along the height direction can be aligned. That is, the bottom of the side frame 200 (in the -Z-axis direction) and the bottom end (in the -Z-axis direction) of each battery cell 100 along the height direction can be positioned on the same plane.

[0069] As a result, the lower surface (-Z direction) of the battery cell array 10 can be in complete and close contact with the thermal management medium, so that heat is quickly transferred to the thermal management medium through the lower end (-Z axis direction) of each battery cell along the height direction, thereby minimizing the temperature difference between the battery cells 100 and preventing local overheating.

[0070] Therefore, the battery cell array 10 of this embodiment maximizes the contact performance with the thermal management medium by exposing one end of each battery cell 100 along the height direction to the outside, thereby effectively improving the efficiency of the bottom cooling method.

[0071] The components of the battery cell array 10 will be described in more detail below.

[0072] Figure 4 It is shown Figure 3 A magnified view of region Q.

[0073] Reference Figure 4In this embodiment, the plurality of battery cells 100 may include an exhaust portion 110 located at the other end opposite to one end of each battery cell 100 in the height direction.

[0074] For example, each of the multiple battery cells 100 may include an exhaust portion 110 at its upper end (+Z-axis direction) along the height direction, which is opposite to the lower end (-Z-axis direction) of each battery cell 100 along the height direction. Therefore, in this embodiment, internal gases generated within each battery cell 100 can be effectively discharged towards the upper side (+Z-axis direction) of each battery cell 100 through the exhaust portion 110.

[0075] The battery cell array 10 of this embodiment may have a gap space formed by the exhaust portions 110 of a plurality of battery cells 100 at a predetermined height H1. This gap space can serve as a channel for the smooth discharge of internal gases generated during exhaust and can help maintain structural stability.

[0076] In conventional bottom venting structures, a separate venting space of a predetermined height must be ensured at the bottom of the battery cell 100 to expel internal gases, etc. However, in this embodiment, by adopting a top venting structure, a separate bottom venting space is not required, thereby maximizing space utilization.

[0077] As a result, in this embodiment, cylindrical battery cells with a relatively large aspect ratio, which is a value obtained by dividing the diameter by the height, can be effectively arranged. For example, the plurality of battery cells 100 applied to the battery cell array 10 can be cylindrical battery cells with specifications such as 4680 and 4695 cells, as well as cylindrical battery cells with greater height (such as 46100 and 46110 cells). Here, the first two digits can represent the diameter of the cell, and the last two digits can represent the height of the cell. As a result, in this embodiment, the energy density can be further improved.

[0078] Furthermore, the top exhaust structure of this embodiment can exhaust internal gases independently of the heat management generated at the bottom of the battery cell array 10, thereby reducing interference between the cooling design and the exhaust structure.

[0079] Therefore, the battery cell array 10 of this embodiment overcomes the design limitations of traditional bottom exhaust structures by adopting a top exhaust structure and maximizes space utilization, thereby further improving the internal energy density.

[0080] Figure 5 It is used to illustrate the application to Figure 1 The diagram shows the resin layer R of the battery cell array 10.

[0081] Reference Figure 5According to one embodiment, the battery cell array 10 may be coated with a resin layer R.

[0082] The resin layer R can be filled between multiple battery cells 100, and can be injected from the upper end (+Z-axis direction) of each battery cell in the height direction toward the lower end (-Z-axis direction) of each battery cell in the height direction. For example, the resin layer R can be a potting resin. More specifically, the resin layer R can be a silicone resin.

[0083] The resin layer R can enhance the structural rigidity of the battery cell array 10. In addition, the resin layer R can prevent heat diffusion between adjacent battery cells 100, thereby suppressing heat propagation that may occur between adjacent battery cells 100 during thermal events.

[0084] Furthermore, the resin layer R can fill the gap space at a predetermined height formed from the exhaust portion 110 of the multiple battery cells 100. Therefore, the resin layer R can enhance the structural stability of the battery cell array 10 and provide resistance to external shocks and vibrations. In this case, the resin layer R can be designed not to interfere with the flow of internal gases, etc., discharged from the exhaust portion 110.

[0085] Figure 6 It is shown Figure 1 A schematic diagram of the side frame 200 and the arrangement of multiple battery cells 100 of the battery cell array 10, and Figure 7 This is used to illustrate attaching and fixing multiple battery cells 100 to... Figure 6 The diagram shows the side frame 200.

[0086] Reference Figure 5 and Figure 6 The side frame 200 may include a plurality of side structures 210 and a pair of sidewalls 220.

[0087] First, a pair of sidewalls 220 can be disposed on the two outermost sides (+X-axis direction and -X-axis direction) of the plurality of battery cells 100. The pair of sidewalls 220 can be disposed on the two outermost sides (+X-axis direction and -X-axis direction) along the width direction (X-axis direction) of the battery cell array 10 to form the side appearance of the battery cell array 10. Each of the pair of sidewalls 220 can support a row of the plurality of battery cells 100.

[0088] Multiple side structures 210 are disposed between the pair of sidewalls 220 and can support multiple battery cells 100. The multiple side structures 210 can be arranged between the pair of sidewalls 220 along the width direction (X-axis direction) of the battery cell array 10. Each of the multiple side structures 210 can accommodate two rows of battery cells 100.

[0089] Each of the multiple side structures 210 can be configured into a curved S-shape. As a result, the multiple battery cells 100 can be fixed in close contact with each other.

[0090] Each of the plurality of battery cells 100 may have an attachment surface that attaches to and secures to the side frame 200 for stable support within the battery cell array 10. By providing this attachment structure, the battery cell array 10 can be stably assembled and supported even without a structure supporting one end of the plurality of battery cells 100 in the height direction (e.g., the lower end (-Z direction) of each battery cell 100 in the height direction).

[0091] The battery cell array 10 may include an adhesive member 300.

[0092] The adhesive component 300 can be applied to attach and secure at least one of the plurality of side structures 210 and sidewalls 220 to the plurality of battery cells 100.

[0093] The adhesive member 300 can be designed to ensure the bonding strength between the multiple battery cells 100 and the multiple side structures 210 and sidewalls 220, while providing vibration absorption and thermal stability.

[0094] Figure 8 This is a schematic diagram showing a battery cell array 20 according to another embodiment of the present disclosure. Figure 9 It is shown Figure 8 A bottom view of the battery cell array 20, and Figure 10 This is a bottom view showing a battery cell array 30 according to yet another embodiment of the present disclosure.

[0095] Reference Figures 1 to 7 The battery cell array 10 described herein can be used in conjunction with battery cell arrays 20, 30 according to other embodiments, and therefore will not be described in detail hereafter.

[0096] Reference Figure 8 and Figure 9 The battery cell array 20 in this embodiment may include a sheet-like component 400.

[0097] The sheet-like member 400 may be disposed at one end of each battery cell 100 along the height direction, for example, at the lower end (-Z-axis direction) of each battery cell 100 along the height direction. The sheet-like member 400 may prevent one end of each battery cell 100 along the height direction (e.g., the lower end (-Z-axis direction) of each battery cell 100) from being exposed to the external environment during the manufacturing process of the battery cell array 10 or when the battery cell array 10 is moved or used.

[0098] The sheet member 400 may contain insulating material. The sheet member 400 can effectively prevent the risk of short circuits of multiple battery cells 100 that may occur in the external environment of the battery cell array 20, especially at the bottom (-Z direction) of the battery cell array 20.

[0099] The sheet member 400 can be configured as a polycarbonate sheet. That is, the sheet member 400 can be configured as a PC sheet.

[0100] In this embodiment, insulation and waterproofing performance can be ensured by the sheet member 400.

[0101] Specifically, the battery cell array 20 can prevent the lower end (-Z axis direction) of each battery cell 100 along the height direction from being exposed by the sheet member 400, thereby preventing damage to multiple battery cells 100 due to short circuits or external impacts.

[0102] In particular, damage to multiple battery cells 100 due to short circuits or external impacts is highly likely to occur during the movement or storage of the battery cell array 10 for subsequent processes. Through the sheet member 400, the battery cell array 20 more reliably prevents the lower end (-Z-axis direction) of each battery cell 100 along the height direction from being exposed during the movement or storage of the battery cell array 10 for subsequent processes, thereby more effectively preventing the risk of damage due to short circuits or external impacts to multiple battery cells 100.

[0103] Furthermore, the battery cell array 20 can prevent leakage or seepage of the resin layer R, which may occur at the bottom (-Z-axis direction) of the battery cell array 10, during the injection process from the upper end (+Z-axis direction) of each battery cell in the height direction to the lower end (-Z-axis direction) of each battery cell in the height direction, through the sheet member 400.

[0104] Furthermore, the sheet member 400 can be attached to cover both the lower end of each battery cell 100 along the height direction (-Z-axis direction) and the bottom of the side frame 130. Additionally, the sheet member 400 can be designed to be completely removed by the user after attachment, prior to installation into the battery pack 1, which will be explained later.

[0105] In this way, the removable sheet member 400 can be removed when the thermal management medium comes into contact with the lower end (-Z-axis direction) of each battery cell along the height direction, thereby improving the contact performance between the thermal management medium and the multiple battery cells 100 and thus improving the cooling performance of the multiple battery cells 100.

[0106] Reference Figure 10According to another embodiment of this disclosure, the battery cell array 30 may include the aforementioned sheet member 400. However, in this case, unlike the battery cell array 20 described above, a coating 500 may be provided.

[0107] The coating 500 can be applied to one end of each battery cell 100 along the height direction. For example, the coating 500 can be applied to the lower end (-Z-axis direction) of each battery cell 100 along the height direction to prevent the risk of damage to multiple battery cells 100 due to short circuits or external impacts.

[0108] Coating 500 can be made from a thermosetting resin.

[0109] Thermal resins can have high thermal conductivity. Therefore, in this embodiment, the heat exchange performance between one end of each battery cell 100 along the height direction and the thermal management medium can be further improved by using a coating 500 made of thermal resin.

[0110] In other words, in this embodiment, the sheet member 400 can be attached after being insulated at one end of each battery cell 100 along the height direction and at the bottom of the side frame 200. Therefore, when the thermal management medium subsequently contacts the lower end (-Z-axis direction) of each battery cell along the height direction, the separate insulation treatment of the thermal management medium can be omitted.

[0111] Figure 11 This is a schematic diagram showing a battery pack 1 including battery cell arrays 10, 20, and 30 according to embodiments of the present disclosure, and Figure 12 This is a schematic diagram showing a vehicle V including a battery pack 1 according to an embodiment of the present disclosure.

[0112] Reference Figure 11 The battery pack 1 in this embodiment may include a battery pack housing C and a battery cell array 10, 20, 30.

[0113] The battery pack housing C can be configured to form the appearance of the battery pack 1 and effectively accommodate the various components constituting the battery pack 1. Therefore, a predetermined space can be formed inside the battery pack housing C, and the battery cell arrays 10, 20, and 30 can be configured to be stably accommodated and fixed in the internal space of the battery pack housing C by means of the components of the battery pack housing C.

[0114] Battery pack 1 may also include various other components of battery packs known at the time of filing of this application. For example, battery pack 1 may also include components such as current sensors, fuses, and service plugs.

[0115] According to one embodiment, the battery pack 1 may include a cooling plate 50 disposed in the internal space of the battery pack housing C.

[0116] The cooling plate 50 may be arranged toward one end of each battery cell 100 in the height direction, for example toward the lower end (-Z direction) of each battery cell 100 in the height direction.

[0117] The cooling plate 50 can have high thermal conductivity to ensure cooling performance. In addition, the cooling plate 50 can also have a cooling path formed to allow the flow of cooling medium.

[0118] The above reference Figures 8 to 10 The described sheet-like member 400 can be removed from the plurality of battery cells 100 when the cooling plate 50 is mounted to the bottom (-Z-axis direction) of the battery cell arrays 10, 20, 30. Therefore, the lower end (-Z-axis direction) of each battery cell 100 along the height direction can be directly cooled by direct contact with the cooling plate 50. Thus, in this embodiment, the cooling performance of the plurality of battery cells 100 can be further ensured.

[0119] In addition, refer to Figures 1 to 9 In one embodiment described, the battery cell arrays 10 and 20 can contact the cooling plate 50 with one end of each battery cell 100 in the height direction, such as the lower end (-Z direction) of each battery cell 100 in the height direction exposed.

[0120] In this case, the cooling plate 50 can be insulated by having a coating 51 on one surface at one end in contact with each battery cell along the height direction.

[0121] The coating 51 can be made of a thermoplastic resin. The thermoplastic resin can have a high thermal conductivity. Therefore, in this embodiment, the heat exchange performance between the plurality of battery cells 100 and the cooling plate 50 can be further enhanced by the coating 51 made of thermoplastic resin.

[0122] However, refer to Figure 10 The battery cell array 30 of one embodiment described can be pre-computed with coating 500 in a separate process; therefore, in this embodiment, coating 51 of cooling plate 50 can be omitted.

[0123] In this way, coatings 500 and 51 can be applied to at least one of the multiple battery cells 100 and the cooling plate 50. Through coatings 500 and 51, one end of each battery cell 100 along the height direction can be stably fixed and tightly attached to the cooling plate 50 along with the insulation treatment.

[0124] As described above, the battery cell arrays 10, 20, and 30 can employ a top venting structure, allowing the gas G generated inside each battery cell 100 to be discharged upwards (in the +Z axis direction) through the venting section 110. Therefore, when an abnormal internal pressure occurs inside a specific battery cell 100, the gas G can be quickly discharged to the outside.

[0125] Because the top exhaust structure operates independently of the cooling plate 50 located at the bottom (-Z-axis direction) of the battery cell arrays 10, 20, and 30, the two important functions of thermal management and gas exhaust can be performed without interfering with each other. For example, the cooling plate 50 absorbs heat from the lower end (-Z-axis direction) of each battery cell 100 along the height direction and exhausts the heat to the outside, while at the same time, the exhaust section 110 smoothly exhausts the gas G towards the upper side (+Z-axis direction) of each battery cell 100, thereby improving the overall cooling efficiency and stability of the battery pack 1.

[0126] In summary, the battery pack 1 of this embodiment can maximize thermal management efficiency while improving internal space utilization by using a bottom cooling method and a top venting method.

[0127] Reference Figure 12 The vehicle V according to an embodiment of the present disclosure may include at least one battery pack 1 according to the present disclosure.

[0128] Furthermore, the vehicle V according to embodiments of the present disclosure may also include various other components included in a vehicle besides the battery pack 1. For example, the vehicle V according to embodiments of the present disclosure may also include a body, motor, control devices such as an ECU (electronic control unit), etc., in addition to the battery pack 1 according to embodiments of the present disclosure.

[0129] Furthermore, the battery pack 1 according to the embodiments of this disclosure can also be applied to various types of energy storage systems or power sources, and can also be equipped in other devices, instruments and facilities (such as energy storage systems using secondary batteries) other than the vehicle V.

[0130] This disclosure has been described in detail. However, it should be understood that while the detailed description and specific examples indicate preferred embodiments of this disclosure, they are given by way of illustration only, as various variations and modifications within the scope of this disclosure will become apparent to those skilled in the art based on this detailed description.

[0131] [Figure Labels]

[0132] 1: Battery pack

[0133] 10: Battery cell array

[0134] 50: Cooling plate

[0135] 51: Coating

[0136] 100: Battery cell

[0137] 110: Exhaust section

[0138] 200: Side frame

[0139] 210: Side structure

[0140] 220: Sidewall

[0141] 300: Adhesive components

[0142] 400: Sheet-like component

[0143] 500: Coating

[0144] C: Battery pack casing

[0145] G: Internal gas

[0146] V: Vehicle

Claims

1. A battery cell array, the battery cell array comprising: Multiple battery cells; as well as A side frame configured to support the plurality of battery cells and form the edge of the battery cell array. In this configuration, the plurality of battery cells are directly cooled at one end of each battery cell along its height direction.

2. The battery cell array according to claim 1, in, One end of each battery cell along the height direction is exposed to the outside to form part of the external shape of the battery cell array.

3. The battery cell array according to claim 1, in, One end of each battery cell along the height direction is at the same position as the bottom of the side frame along the height direction.

4. The battery cell array according to claim 1, in, The plurality of battery cells have venting sections configured to vent at the opposite end of each battery cell, opposite one end along the height direction. The battery cell array has a gap space formed at a predetermined height from the exhaust portion of the plurality of battery cells.

5. The battery cell array according to claim 1, in, The plurality of battery cells have attachment surfaces that are attached to and fixed to the side frame.

6. The battery cell array according to claim 1, in, The side frame includes: A pair of sidewalls, said pair of sidewalls being disposed on the two outermost sides of the plurality of battery cells; and Multiple side structures are disposed between the pair of sidewalls. The battery cell array includes an adhesive member that is coated to attach and secure at least one of the plurality of side structures and the sidewalls to the plurality of battery cells.

7. The battery cell array according to claim 1, in, The battery cell array has a coating applied to one end of each battery cell along the height direction.

8. The battery cell array according to claim 7, in, The coating comprises a thermosetting resin.

9. The battery cell array according to claim 1, wherein the battery cell array further comprises: A sheet-like member is disposed at one end of each battery cell along the height direction and at the bottom of the side frame.

10. The battery cell array according to claim 9, in, The sheet-like component is an attachable and removable insulating component.

11. The battery cell array according to claim 9, in, The sheet-like member is attached after being insulated at one end of each battery cell along the height direction and at the bottom of the side frame.

12. A battery pack, the battery pack comprising: Battery pack casing; as well as At least one battery cell array according to any one of claims 1 to 11.

13. The battery pack according to claim 12, further comprising: A cooling plate is disposed within the internal space of the battery pack housing. The cooling plate contacts and cools one end of each battery cell in the height direction.

14. The battery pack according to claim 13, in, The cooling plate is insulated on a surface that contacts one end of each battery cell along the height direction.

15. The battery pack according to claim 13, in, The cooling plate is placed at the bottom of the battery cell array and is configured to vent air from the top of the battery cell array.

16. A vehicle comprising at least one battery pack according to claim 12.

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