Battery module and battery pack

Abstract

Disclosed is a battery module having improved cycle performance, and the like. A battery module, according to one aspect of the present invention, comprises: a cell assembly having a plurality of battery cells, each of which has an electrode terminal and is mutually stacked in at least one direction; a module case accommodating the cell assembly in an internal space thereof; a cooling member positioned on at least one side of the cell assembly so as to discharge heat via a coolant; and a heat dissipation member disposed opposite at least one battery cell so as to transfer heat from the battery cell to the cooling member, and configured to partially protrude from the cooling member side.

Description

Battery modules and battery packs

[0001] This application claims priority to Korean Patent Application No. 10-2023-0172604, filed December 1, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to battery technology, and more particularly, to a battery module with improved cycle performance, a battery pack including the same, and a vehicle.

[0003] As demand for portable electronic devices such as smartphones, tablet PCs, and smartwatches increases significantly and electric vehicles become increasingly widespread, research is actively being conducted on the batteries used in these devices, especially secondary batteries that can be repeatedly charged and discharged.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.

[0005] Lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative active materials, respectively. Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative active materials, respectively, arranged with a separator between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.

[0006] In general, lithium secondary batteries can be classified into can-type secondary batteries, in which the electrode assembly is housed in a metal can, and pouch-type secondary batteries, in which the electrode assembly is housed in a pouch made of aluminum laminate sheet, depending on the shape of the outer packaging material. Furthermore, can-type secondary batteries can be classified into cylindrical batteries and prismatic batteries, depending on their shape. Currently, secondary batteries, particularly lithium secondary batteries, can be classified into three representative types: pouch-type, prismatic, and cylindrical.

[0007] Secondary batteries are widely used for powering and storing energy not only in small devices like portable electronic devices, but also in medium- to large-scale devices like electric vehicles and energy storage systems (ESS). Furthermore, with the recent rapid growth of the electric vehicle industry, interest in batteries, a core technology, is growing.

[0008] These secondary batteries can be electrically connected and housed together within a module case to form a single battery module. Furthermore, a battery pack can be formed by including one or more battery modules, along with various electronic components for controlling their charging and discharging operations, such as a Battery Management System (BMS) or electrical components like fuses.

[0009] Since battery cells inevitably generate heat during the charge / discharge cycle, failure to properly cool them can hinder the stable performance of the battery cells and the battery devices (e.g., battery modules) containing them. Furthermore, even within a single battery cell, temperature differences can occur. These temperature variations can lead to high temperatures concentrated in specific areas over time.

[0010] In particular, these temperature unevennesses can cause lithium plating on the internal electrodes of battery cells. This plating can lead to dendrite growth, which can cause problems such as separator failure. Furthermore, if the separator fails, it can lead to thermal runaway of the battery, potentially causing significant damage.

[0011] Moreover, with the recent emergence of rapid charging technology, the use of high charge-rates (C-rates) is increasing. In this situation, battery heat generation can accelerate, making it urgent to develop technologies that can prevent high-temperature concentration and ensure even heat distribution.

[0012] Accordingly, the present invention has been created to solve the above problems, and its purpose is to provide a battery module, a battery pack including the same, and an automobile, etc., which can effectively improve cycle performance including safety through efficient thermal management for partial temperature deviation.

[0013] However, the technical problems to be solved by the present invention are not limited to the problems described above, and other problems not mentioned can be clearly understood by those skilled in the art from the description of the invention described below.

[0014] According to one aspect of the present invention for achieving the above object, a battery module includes a cell assembly having a plurality of battery cells, each of which is provided with an electrode terminal and mutually stacked in at least one direction; a module case accommodating the cell assembly in an internal space; a cooling member positioned on at least one side of the cell assembly and discharging heat through a coolant; and a heat dissipation member positioned opposite at least one battery cell, transferring heat from the battery cell to the cooling member, and configured to partially protrude from the side of the cooling member.

[0015] Here, the heat dissipation member may have a main body portion located on the cooling member side and a protrusion portion protruding from at least one side of the main body portion and having a narrower width than the main body portion.

[0016] Additionally, the heat dissipation member may be configured to partially protrude from the high temperature side of the opposing battery cell.

[0017] Additionally, the heat dissipation member may be configured to protrude from a portion where the electrode terminals of the opposing battery cells are located.

[0018] Additionally, the heat dissipation member may be configured such that the width of the protruding portion varies at least partially.

[0019] Additionally, the heat dissipation member may be configured to protrude from two or more portions.

[0020] Additionally, the heat dissipation member may be configured to protrude from each of the longitudinal ends of the battery cell.

[0021] In addition, the heat dissipation member may be configured to have different heat dissipation performances for two or more protruding portions.

[0022] Additionally, the heat dissipation member may have an outer protrusion and an inner protrusion arranged in the longitudinal direction of the battery cell.

[0023] Additionally, the heat dissipation member may be configured to be included in multiple numbers and arranged along the stacking direction of the battery cells.

[0024] Additionally, at least some of the plurality of heat dissipating members may be configured to have different protrusion shapes from each other.

[0025] Additionally, the heat dissipation member may have a notch formed at the end portion on the side where the cooling member is located.

[0026] Additionally, the heat dissipation member may be configured to form a partial difference in the distance from the opposing battery cells.

[0027] Additionally, the heat dissipation member may be configured in a form in which at least a portion of the protruding portion is bent.

[0028] In addition, a battery pack according to another aspect of the present invention for achieving the above-described purpose includes a battery module according to the present invention.

[0029] In addition, according to another aspect of the present invention for achieving the above purpose, a vehicle includes a battery module according to the present invention.

[0030] According to the present invention, cycle performance can be improved for a battery device including a battery cell, i.e., a battery module or a battery pack.

[0031] In particular, according to one aspect of the present invention, local temperature deviations within a battery cell can be effectively reduced, thereby ensuring temperature uniformity across the battery cell. Accordingly, lithium precipitation within the battery cell can be suppressed, thereby preventing dendrite growth.

[0032] Therefore, according to this aspect of the present invention, it is possible to ensure that the performance of a battery cell or a battery device including the same is stably maintained for a long period of time.

[0033] Moreover, according to this aspect of the present invention, problems such as thermal runaway caused by separator damage due to dendrite growth or the like can be suppressed. Therefore, the safety of battery cells and battery devices can be ensured.

[0034] Therefore, in the case of the present invention, a battery device with an improved lifespan that can be used safely and stably for a long period of time can be provided.

[0035] In addition, the present invention may have various other effects, which will be described in each embodiment configuration, or an explanation of effects that can be easily inferred by a person skilled in the art will be omitted.

[0036] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0037] FIG. 1 is a perspective view schematically showing the configuration of a battery module according to one embodiment of the present invention.

[0038] Figure 2 is an exploded perspective view of the battery module of Figure 1.

[0039] Figure 3 is a cross-sectional view of a battery module according to one embodiment of the present invention.

[0040] Fig. 4 is a side view schematically showing the configuration of a heat dissipation member according to one embodiment of the present invention.

[0041] FIG. 5 is a perspective view showing one heat dissipation member and one battery cell separated from each other in a battery module according to one embodiment of the present invention.

[0042] Fig. 6 is a side view schematically showing a configuration in which the heat dissipation member and battery cells of Fig. 5 are stacked on each other.

[0043] FIGS. 7 to 9 are drawings schematically showing the configuration of a heat dissipation member according to various other embodiments of the present invention.

[0044] Fig. 10 is a drawing schematically showing the configuration of a heat dissipation member according to another embodiment of the present invention.

[0045] FIG. 11 is a drawing schematically showing the configuration of different heat dissipation members included in a battery module according to one embodiment of the present invention.

[0046] FIG. 12 is a drawing schematically showing the configuration of different heat dissipation members included in a battery module according to another embodiment of the present invention.

[0047] FIG. 13 is a drawing schematically showing the configuration of different heat dissipation members included in a battery module according to another embodiment of the present invention.

[0048] Fig. 14 is a drawing schematically showing the configuration of a heat dissipation member according to another embodiment of the present invention.

[0049] FIG. 15 is a drawing schematically showing a configuration in which a heat dissipation member according to one embodiment of the present invention is opposed to one battery cell.

[0050] FIG. 16 is an exploded perspective view schematically illustrating the configuration of one battery cell and one heat dissipation member included in a battery module according to another embodiment of the present invention.

[0051] Fig. 17 is a drawing schematically showing the configuration of a heat dissipation member according to another embodiment of the present invention.

[0052] Fig. 18 is a drawing schematically showing the configuration of a heat dissipation member according to another embodiment of the present invention.

[0053] Fig. 19 is a cross-sectional view schematically showing the configuration of a battery module according to another embodiment of the present invention.

[0054] Figure 20 is a perspective view schematically showing the configuration of a battery pack according to one embodiment of the present invention.

[0055] FIG. 21 is a perspective view schematically showing the configuration of a battery pack according to another embodiment of the present invention.

[0056] 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.

[0057] 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, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of this application.

[0058] Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, and back may be used, but these terms are only for convenience of explanation, and it is obvious to those skilled in the art that these terms may vary depending on the position, arrangement, rotation, and position of the object being targeted, or the position of the observer.

[0059] In addition, this specification includes several embodiments, and a detailed description of parts to which the description of other embodiments can be applied identically or similarly is omitted, and the description focuses on the parts that are different from each embodiment.

[0060]

[0061] FIG. 1 is a perspective view schematically illustrating the configuration of a battery module according to one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the battery module of FIG. 1. FIG. 3 is a cross-sectional view of a battery module according to one embodiment of the present invention. For example, FIG. 3 is a cross-sectional view taken along line A1-A1' of FIG. 1.

[0062] Referring to FIGS. 1 to 3, a battery module according to the present invention includes a cell assembly (100), a module case (200), a cooling member (300), and a heat dissipation member (400).

[0063] The above cell assembly (100) may include one or more battery cells (110), particularly a plurality of battery cells (110). Here, each battery cell (110) may refer to a single secondary battery or may refer to a battery group comprising multiple secondary batteries. In this specification, the description is based on the assumption that a battery cell (110) represents a single secondary battery.

[0064] The battery cell (110) may include an electrode assembly, an electrolyte, and a battery case. The battery case may have various shapes, and depending on the shape of the battery case, the battery cell (110) may be classified into a pouch-type cell, a cylindrical cell, a square cell, etc. Since the types and shapes of the battery cell (110) were widely known at the time of filing of the present invention, a detailed description thereof will be omitted. The present invention may be applied to various types of secondary batteries known at the time of filing of the present invention. In addition, the battery cell (110) may be a lithium secondary battery, but of course, it may be various other types of secondary batteries.

[0065] In the cell assembly (100), a plurality of battery cells (110) may be configured in a form in which they are stacked in at least one direction. For example, as illustrated in FIG. 2, a plurality of battery cells (110) may be stacked in a form in which they are arranged in a horizontal direction, particularly in the left-right direction (X-axis direction). In addition, a plurality of battery cells (110) provided in the cell assembly (100) may be electrically connected to each other in series and / or in parallel through a bus bar (not illustrated) or the like.

[0066] Meanwhile, in this specification, unless otherwise specified, the X-axis direction in which a plurality of battery cells (110) are stacked is referred to as the left-right direction, the Y-axis direction, which is a horizontal direction orthogonal to the cell stacking direction, is referred to as the front-back direction, and the Z-axis direction orthogonal to the XY plane is referred to as the up-down direction (vertical direction). Furthermore, in the case of pouch-type cells, the Y-axis direction may also be referred to as the length direction of the cell. In addition, the left-right direction, the front-back direction, and the up-down direction may also be expressed as the first direction, the second direction, and the third direction, respectively.

[0067]

[0068] Each battery cell (110) may be equipped with an electrode terminal (111). For example, as illustrated in FIG. 2, each pouch-shaped cell provided in the cell assembly (100) may be equipped with an electrode terminal (111) that is arranged to protrude in the front-back direction. This electrode terminal (111) may be referred to as an electrode lead or an electrode tab, etc. A plurality of battery cells (110) may be electrically connected to each other in series or parallel through this electrode terminal (111).

[0069] In addition, the battery module may further include a bus bar or the like to facilitate connection between the plurality of electrode terminals (111) or to sense an electrical signal from the electrode terminals (111).

[0070]

[0071] The above module case (200) may be configured to have an empty space formed therein and to accommodate a plurality of cell assemblies (100) in the internal space. For example, the module case (200) may have an upper plate (210), a lower plate (220), a left plate (230), a right plate (240), a front plate (250), and a rear plate (260) to limit the internal space. In addition, the cell assemblies (100) may be positioned in the limited internal space. The module case (200) may be at least partially composed of a metal and / or plastic material.

[0072] At least some of the various plate-shaped members constituting the module case (200) may be configured in an integrated form. For example, as illustrated in FIG. 2, the module case (200) may be manufactured in a monoframe form in which an upper plate (210), a lower plate (220), a left plate (230), and a right plate (240) are integrated with each other. In addition, a front plate (250) and a rear plate (260) may be coupled to the open front and rear ends of the monoframe.

[0073] As another example, the module case (200) may have a U-frame-shaped main body in which a lower plate (220), a left plate (230), and a right plate (240) are integrated with each other. At this time, the upper plate (210), the front plate (250), and the rear plate (260) may cover or seal the upper, front, and rear of the main body. As another example, the module case (200) may be configured in a form in which each plate is manufactured separately and then joined and fixed to each other. In addition, the module case (200) may be configured in various other shapes or structures. Meanwhile, various fastening methods such as welding, bonding, bolting, and hooking may be used to join and fix the unit components of the module case (200).

[0074]

[0075] The cooling member (300) may be configured to discharge heat through a coolant. To this end, the cooling member (300) may be in direct or indirect contact with the coolant. In particular, the cooling member (300) may be configured to allow the coolant to flow. For example, the cooling member (300) may have a hollow space formed therein, as indicated by H in FIG. 2 , to provide a cooling path. Then, the coolant may flow through this cooling path (H). Here, the coolant is a cooling medium capable of absorbing and transferring heat, and may include not only a cooling liquid such as coolant, but also a cooling gas.

[0076] Meanwhile, the cooling member (300) does not necessarily have to be configured in a form that allows the coolant to flow. For example, the cooling member (300) may be implemented in a form that retains the coolant in a predetermined space. The cooling member (300) may be expressed by other terms, such as a heat sink, or implemented in a different structure.

[0077] The cooling member (300) may be positioned at least on one side of the cell assembly (100). And, the cooling member (300) may absorb heat from the cell assembly (100). For example, as shown in FIGS. 1 to 3, the cooling member (300) may be positioned on the lower side of the cell assembly (100). Furthermore, when a cavity is formed in the cooling member (300) and a coolant flows through the cavity, the coolant may absorb heat from the cell assembly (100) in the lower space of the cell assembly (100) and move to another space to discharge the absorbed heat to the outside.

[0078]

[0079] The above heat dissipation member (400) may be configured to transfer heat from a battery cell (110) provided in a cell assembly (100) to a cooling member (300). To this end, the heat dissipation member (400) may be provided with or made of a heat-conductive material, such as a metal material such as aluminum.

[0080] In addition, the heat dissipation member (400) may be disposed facing at least one battery cell (110). In particular, the heat dissipation member (400) may be configured in the form of a sheet or pad having two wide surfaces. At this time, the heat dissipation member (400) may be disposed such that at least one of the two surfaces faces the battery cell (110). For example, in the exemplary configuration of FIG. 3, each heat dissipation member (400) may have a battery cell (110) disposed facing the left side and / or the right side.

[0081] In addition, the heat dissipation member (400) may be arranged such that at least one side faces the cooling member (300). For example, referring to the embodiment of FIG. 3, the heat dissipation member (400) may be arranged such that the lower end faces the cooling member (300). At this time, the lower end of the heat dissipation member (400) may be in direct or indirect contact with the cooling member (300). For example, in the embodiment of FIG. 1 to FIG. 3, the lower end of the heat dissipation member (400) may be indirectly in contact with the cooling member (300) through the lower plate (220) of the module case (200).

[0082] The heat dissipation member (400) can absorb heat from the corresponding battery cell (110) and transfer the absorbed heat to the cooling member (300). At this time, a heat-conducting material, such as a heat-conducting adhesive, may be further interposed between the heat dissipation member (400) and the cooling member (300) to increase heat conduction efficiency and improve the assembling of the heat dissipation member (400), etc. For example, in the embodiment of FIG. 3, a thermal resin may be interposed between the heat dissipation member (400) and the lower plate (220).

[0083]

[0084] The above heat dissipation member (400) may be configured to partially protrude. This will be described in more detail with additional reference to FIG. 4.

[0085] Figure 4 is a side view schematically showing the configuration of a heat dissipation member (400) according to one embodiment of the present invention.

[0086] Referring further to FIG. 4, the heat dissipation member (400) may have a partially protruding portion, such as the portions indicated by B1 and B1'. In particular, the heat dissipation member (400) may be configured to protrude in a predetermined direction from the side of the cooling member (300). For example, when the cooling member (300) is positioned at the bottom, the heat dissipation member (400) may have a form that partially protrudes in a different direction from the bottom, for example, toward the upper side. Furthermore, the partial protrusion direction of the heat dissipation member (400) may be configured in the opposite direction to the direction in which it is positioned with respect to the cooling member (300). That is, the heat dissipation member (400) may include a portion that protrudes in the opposite direction to the side on which the cooling member (300) is positioned.

[0087] According to this embodiment of the present invention, temperature distribution uniformity can be effectively achieved within a single battery cell (110). Furthermore, in this case, lithium precipitation and other phenomena can be prevented from occurring due to local temperature deviations within the cell. Therefore, the performance and safety of the battery module can be stably maintained for an extended period of time, thereby improving module cycle performance.

[0088]

[0089] The above heat dissipation member (400) may have a main body (410) and a protrusion (420), as shown in FIG. 4.

[0090] The above main body (410) may be a portion located on the cooling member (300) side of the heat dissipation member (400). That is, the main body (410) may be arranged toward the cooling member (300). In particular, the main body (410) may be in direct or indirect contact with the cooling member (300). For example, referring to FIG. 4, the cooling member (300) is located on the lower side of the heat dissipation member (400), and the main body (410) may be arranged such that a lower edge portion on the lower side of the heat dissipation member (400) is in direct contact with the heat dissipation member (400) or indirectly in contact with the heat dissipation member (400) through thermal resin or the like. The main body (410) may occupy an area of ​​50% or more of the heat dissipation member (400), but the present invention is not necessarily limited to this form.

[0091] The above-described protrusion (420) may be configured to protrude and extend in a predetermined direction from at least one side of the main body (410). For example, the protrusion (420) may have a shape that protrudes upward from the top of the main body (410), as illustrated in FIG. 4. In particular, the protrusion (420) may be a portion configured to partially protrude from the heat dissipation member (400), such as portions indicated by B1 and B1' in FIG. 4. In addition, the protrusion (420) may have a narrower width than the main body (410). For example, in the exemplary configuration of FIG. 4, the width (length) of the protrusion (420) in the left-right direction (Y-axis direction) may be formed to be narrower than the left-right width of the main body (410).

[0092] The above heat dissipation member (400) may be configured in a form in which the main body (410) and the protrusion (420) are integrated with each other. For example, the heat dissipation member (400) may be manufactured as a single metal member, and in a form in which they are joined together from the beginning. In particular, when the heat dissipation member (400) is configured in a sheet form, the main body (410) and the protrusion (420) may be manufactured as a single sheet.

[0093] The main body (410) and the protrusion (420) may be configured so that their surfaces are positioned on the same plane. For example, when the main body (410) and the protrusion (420) are each configured in the form of a sheet, the main body (410) and the protrusion (420) may be positioned on the same YZ plane.

[0094] According to the above implementation configuration, selective heat absorption for a specific portion of the battery cell (110) can be easily achieved through the configuration of the protrusion (420). Furthermore, in this case, heat absorbed from the protrusion (420) side can move to the main body (410) side and be quickly cooled. Accordingly, the temperature uniformity effect due to partial heat management of the battery cell (110) can be further improved.

[0095]

[0096] The above heat dissipation member (400) may be configured to partially protrude from the high temperature side of the opposing battery cell (110). This will be further described with reference to FIGS. 5 and 6.

[0097] Fig. 5 is a perspective view showing a heat dissipation member (400) and a battery cell (110) separated from each other in a battery module according to one embodiment of the present invention. Fig. 6 is a side view schematically showing a configuration in which the heat dissipation member (400) and the battery cell (110) of Fig. 5 are stacked on each other.

[0098] First, referring to FIG. 5, one heat dissipation member (400) may be configured to be erected in the vertical direction (Z-axis direction) and extended long in the front-back direction (Y-axis direction). In addition, one battery cell (110) may be configured to be erected in the vertical direction and extended long in the front-back direction, facing the heat dissipation member (400). At this time, the heat dissipation member (400) and the battery cell (110) may be stacked and arranged to face each other in the left-right direction (X-axis direction).

[0099] In this embodiment, the battery cell (110) may have a high temperature in a specific part during use (charging, discharging) or storage. For example, in the embodiment of FIG. 5, the battery cell (110) may have a higher temperature in the parts indicated by E1 and E1' than in other parts. In this case, the heat dissipation member (400) facing the battery cell (110) may be configured such that the part corresponding to the high temperature part protrudes. Here, the corresponding part may be a part that faces each other when the battery cell (110) and the heat dissipation member (400) are stacked on each other. For example, referring to the configuration illustrated in FIG. 6, when the battery cell (110) and the heat dissipation member (400) are stacked on each other, the parts B1 and B1' of the heat dissipation member (400), which correspond to E1 and E1' of the battery cell (110), may be configured to protrude upwards compared to the other parts. Additionally, the heat dissipation member (400) may be configured to protrude toward the high temperature portion of the opposing battery cell (110).

[0100] In this embodiment, the high temperature part may refer to a part of the battery cell (110) where the temperature is relatively high. For example, the high temperature part may be set to a specific temperature, for example, a temperature that is higher by a certain degree than the overall average temperature of the battery cell (110) or room temperature. The high temperature part of the battery cell (110) may be identified in advance through testing, experiments, calculation processes, etc. during the design stage of the battery module. In addition, the heat dissipation member (400) may be configured to have a protrusion (420) at a part corresponding to the high temperature part of the battery cell (110). In particular, the heat dissipation member (400) may be configured to protrude in a specific direction, for example, in an upward direction opposite to the cooling member (400), from the side of the highest temperature part where the temperature is the highest in the battery cell (110).

[0101] According to this embodiment of the present invention, heat from a high temperature side can be quickly transferred to a low temperature side through the heat dissipation member (400). In particular, in one embodiment, the heat dissipation member (400) can be configured to connect the highest temperature generation point and the lowest temperature generation point of the battery cell (110). In this case, by smoothly transferring the heat from the high temperature side of the battery cell (110) to the low temperature side, it can be more advantageous in achieving the effect of improving the cooling performance of the battery cell (110) and eliminating partial temperature deviation.

[0102]

[0103] The heat dissipation member (400) may be configured to protrude from a portion where the electrode terminal (111) is positioned. For example, in the exemplary configurations of FIGS. 5 and 6, the cooling member (300) is positioned at the bottom, the battery cell (110) is configured to be elongated in the front-back direction (Y-axis direction), and the electrode terminals (111) may be positioned at both ends in the front-back direction. In this case, the heat dissipation member (400) is configured to be elongated in the front-back direction so as to face the battery cell (110), and both ends in the front-back direction corresponding to the electrode terminal (111) side of the battery cell (110) may be configured to protrude upward. In this exemplary configuration, it can be said that the heat dissipation member (400) is configured such that both ends in the longitudinal direction (front-back direction) are higher than other portions.

[0104] In the battery cell (110), during the charging and discharging process, the portion where the electrode terminal (111) is provided often becomes hotter than other portions. However, in the above-described embodiment, the portion of the heat dissipation member (400) positioned closer to the electrode terminal (111) may be formed wider than other portions. That is, in the embodiment of Fig. 6, when examining the area per unit length in the front-back direction (Y-axis direction) of the heat dissipation member (400), the front end and the rear end facing the electrode tab can be said to be the widest compared to other portions.

[0105] According to this implementation configuration, the temperature of the high temperature portion provided on the electrode terminal (111) side of the battery cell (110) can be quickly lowered. Therefore, by preventing the temperature of a specific portion, particularly the electrode terminal (111) side of one battery cell (110), from becoming excessively higher than other portions, the temperature distribution of the battery cell (110) can be more effectively uniformed.

[0106]

[0107] The heat dissipation member (400) may be configured in a partially cut-off shape. For example, referring to FIGS. 5 and 6, the heat dissipation member (400) may be formed in a generally rectangular sheet shape, but may be configured in a shape in which the upper central portion is cut-off. In this case, when the heat dissipation member (400) is laminated with the battery cell (110), a portion of the battery cell (110) may be exposed, as indicated by E2 in FIG. 6. In particular, due to the cut-off portion of the heat dissipation member (400), the upper central portion (E2) of the battery cell (110) may be exposed in the left-right direction.

[0108] In this embodiment, the battery cell (110) may have a portion where the heat dissipation member (400) is positioned facing the battery cell (110) and a portion (E2 in FIG. 6) where the heat dissipation member (400) is not positioned facing the battery cell (110). In particular, the cut portion of the heat dissipation member (400), that is, the non-faced portion, may be a portion that does not correspond to the highest temperature portion of the battery cell (110) and has a relatively low temperature. For example, in the battery cell (110) of FIG. 6, the portion E2 may have a lower temperature than the portion E1.

[0109] According to this embodiment, compared to a rectangular heat dissipation sheet, uniform heat distribution can be easily achieved. Furthermore, in this case, the cut-out portion can reduce the weight of the heat dissipation member (400) and the battery module including it, and the energy density of the battery module can be improved by securing space. Furthermore, in this case, the cut-out portion can also secure swelling space for the battery cell (110).

[0110]

[0111] The heat dissipation member (400) may be configured so that the width of the protruding portion at least partially varies. In particular, the heat dissipation member (400) may have a portion whose width narrows along the protruding direction.

[0112] For example, referring to parts B1 and B1' of FIGS. 5 and 6, the protrusion (420) of the heat dissipation member (400) may be configured to have a width that gradually narrows as it goes upward. In particular, the protrusion (420) may be formed in a pointed shape with the narrowest width at the end in the protruding direction. In this case, the protrusion (420) may be configured in an approximately triangular sheet shape. On the other hand, the main body (410) may be configured in an approximately square sheet shape.

[0113] Moreover, the protrusion (420) may be configured to have a width that becomes narrower as it approaches the high temperature region. For example, the protrusion (420), as illustrated in FIG. 6, may be provided at a portion where the electrode terminal (111) of the battery cell (110) is located, and configured to protrude upward. In particular, one edge of the protrusion (420) may be formed in a vertical direction, and the other edge may be formed to be inclined at a predetermined angle from the vertical direction. For example, in part B1 of FIG. 4, the protrusion (420) has a front edge and a rear edge centered on the upper vertex, and the front edge may extend in a vertical direction (Z-axis direction), and the rear edge may extend in a direction inclined at a predetermined angle (for example, 30°) from the vertical direction. In this case, the protrusion (420) may be said to have a vertical edge (front edge) and an inclined edge (rear edge). In particular, the inclined edge may have a tilted shape so that the lower end faces the center of the front-back direction (Y-axis direction) of the main body (410). In addition, the vertical edge of the protrusion (420) may be configured in a shape that forms a straight line with the front or rear side edge of the main body (410).

[0114] According to this embodiment configuration, the heat of the high temperature part absorbed from the protrusion (420) can be more smoothly transferred to the main body part (410). In particular, when looking at the side of the protrusion (420), the width of the part where the heat is released can be formed wider than the part where the heat is absorbed. Therefore, the path of heat movement from the protrusion (420) toward the main body part (410) becomes wider, thereby enabling faster heat dissipation. In addition, according to the above embodiment configuration, smoother cooling is possible for the high temperature part where the electrode terminal (111) is located.

[0115]

[0116] The above heat dissipation member (400) may be configured to protrude from two or more portions. For example, as illustrated in FIGS. 4 to 6, one heat dissipation member (400) may have two protrusions (420). As another example, one heat dissipation member (400) may have three or more protrusions (420).

[0117] Here, each of the plurality of protrusions (420) may be formed in a convex shape such that one end is connected to the main body (410) and the other end is directed toward a different part. For example, the two protrusions (420) illustrated in FIGS. 4 to 6 may be positioned on the upper side of the main body (410), have lower ends connected to the main body (410), and extend toward the upper side. At this time, the upper ends of each of the two protrusions (420) may be formed in a shape that faces the upper part of the front side and the upper part of the rear side of the battery cell (110).

[0118] The plurality of protrusions (420) may be at least partially separated from each other. For example, as illustrated in FIGS. 4 to 6, two protrusions (420) may be positioned spaced apart from each other in the front-back direction (Y-axis direction). In this case, the two protrusions (420) do not contact each other, but their respective lower ends are connected to the same main body (410).

[0119] The above-described implementation configuration can be more advantageously applied when high-temperature parts are located in different parts of a single battery cell (110). For example, in a single battery cell (110), multiple high-temperature parts may be located in parts spaced apart from each other, and the heat dissipation member (400) may be provided with protrusions (420) at multiple parts in a shape corresponding to the positions of the multiple high-temperature parts. In this case, by selectively dissipating heat to the high-temperature parts of the battery cell (110) located in multiple parts, the partial temperature deviation of the battery cell (110) can be effectively eliminated.

[0120]

[0121] Furthermore, the heat dissipation member (400) may be configured to protrude from each of the longitudinal ends of the battery cell (110). For example, the heat dissipation member (400), in the exemplary configurations of FIGS. 4 to 6, may have a shape that extends long in the front-back direction (Y-axis direction), and protrusions (420) may be provided at each of the front-back and front-back ends.

[0122] In the case of a battery cell (110), particularly a pouch-type battery cell (110), electrode terminals (111) may be provided at both ends in the front-rear direction. Looking into more detail with reference to FIGS. 5 and 6, the pouch-type battery cell (110) may be provided with a storage portion (S1) in which an electrode assembly and an electrolyte are stored, and a sealing portion (S2) at a rim portion thereof. At this time, the sealing portion (S2) may be formed by a method such as heat-sealing a pouch-type outer material. Furthermore, the sealing portion (S2) may be formed at the front, rear, upper, and / or lower sides of the storage portion (S1). In particular, when a pouch-type cell in an upright form is viewed from the left and right sides, it can be said that it is formed in an approximately square shape. At this time, a pouch-shaped cell in which the sealing portions (S2) are formed at all four corners of the receiving portion (S1) is referred to as a four-sided sealing cell, and a pouch-shaped cell in which the sealing portions (S2) are formed at three corners of the receiving portion (S1) is referred to as a three-sided sealing cell. However, the present invention is not limited to the specific shape or structure of the battery cell (110), particularly the pouch-shaped cell, and various types of battery cells (110) known at the time of filing of the present invention may be employed in the present invention.

[0123] As in the embodiment of FIGS. 5 and 6, when the battery cell (110) has electrode terminals (111) at both ends in the longitudinal direction, the heat dissipation member (400) may also be configured to protrude upward (+Z-axis direction) from both ends in the longitudinal direction (front-back direction) of the battery cell (110). Furthermore, it can be said that the protrusion (420) is configured to protrude upward and downward from both ends in the front-back direction of the main body (410).

[0124] According to this embodiment of the present invention, it is possible to secure more effective temperature deviation suppression and cooling performance for a pouch-type battery cell (110) such as a bidirectional cell.

[0125]

[0126] The heat dissipation member (400) may be configured to have different heat dissipation performances for two or more protruding portions. This difference in heat dissipation performance between the protruding portions may be realized by configuring them differently in terms of the protrusion shape, structure, thickness, material, etc. This will be described in more detail with reference to the various exemplary drawings described below.

[0127] FIGS. 7 to 9 are drawings schematically showing the configuration of a heat dissipation member (400) according to various other embodiments of the present invention.

[0128] Referring to FIGS. 7 to 9, a heat dissipation member (400) may be provided with a main body (410) and two protrusions (420). At this time, the two protrusions (420) may be positioned on the front and rear sides of the main body (410), respectively, and may be divided into a front protrusion (420F) and a rear protrusion (420R).

[0129] First, referring to Fig. 7, the two protrusions (420F, 420R) may have a square shape and may be configured to have the same vertical height. However, the two protrusions (420F, 420R) may be configured to have different lengths (widths) in the front-back direction. For example, as illustrated in Fig. 7, when the width of the front protrusion (420F) is W1 and the width of the rear protrusion (420R) is W1', by configuring the sizes of W1 and W1' to be different, the heat dissipation performances between the two protrusions (420F, 420R) may be different.

[0130] In particular, in the above-described embodiment, if the heights between different protrusions (420F, 420R) are the same, it can be said that the heat dissipation performance of the part formed with a wider width is better. For example, in the embodiment of Fig. 7, since the width (W1) of the front protrusion (420F) is wider than the width (W1') of the rear protrusion (420R), it can be said that the heat dissipation performance of the front protrusion (420F) is higher than the heat dissipation performance of the rear protrusion (420R).

[0131]

[0132] As another example, referring to FIG. 8, the two protrusions (420F, 420R) both have a square shape and can be formed with the same width. However, the two protrusions (420F, 420R) can be configured to have different vertical heights. For example, as illustrated in FIG. 8, when the height of the front protrusion (420F) is I1 and the height of the rear protrusion (420R) is I1', by configuring the sizes of I1 and I1' to be different, the heat dissipation performance between the two protrusions (420F, 420R) can be made different.

[0133] In particular, in the above-described embodiment, if the widths between different protrusions (420F, 420R) are the same, it can be said that the heat dissipation performance of the part with a higher height is superior. For example, in the embodiment of Fig. 8, since the height (I1) of the front protrusion (420F) is greater than the height (I1') of the rear protrusion (420R), it can be said that the heat dissipation performance of the front protrusion (420F) is greater than the heat dissipation performance of the rear protrusion (420R).

[0134]

[0135] As another example, referring to FIG. 9, the two protrusions (420F, 420R) may have different shapes in addition to the height or width. For example, as illustrated in the drawing, the front protrusion (420F) may be formed in a trapezoidal shape, and the rear protrusion (420R) may be formed in a triangular shape. In this case, when the surface area of ​​the front protrusion (420F) is R1, and the surface area of ​​the rear protrusion (420R) is R1', by configuring the sizes of R1 and R1' differently, the heat dissipation performance between the two protrusions (420) may be different.

[0136] In particular, in the above-described embodiment, the heat dissipation performance of the portion formed with a large surface area can be relatively excellently secured. For example, in the embodiment of Fig. 9, since the surface area (R1) of the front protrusion (420F) is larger than the surface area (R1') of the rear protrusion (420R), the heat dissipation performance of the front protrusion (420F) can be said to be superior to the heat dissipation performance of the rear protrusion (420R).

[0137]

[0138] As another example, as illustrated in FIG. 4, the two protrusions (420) located on the front and rear sides may be configured to have the same shape or area when viewed from the side. However, the thicknesses of the two protrusions (420) when viewed from the front or rear sides may be configured to be different.

[0139] In particular, a portion formed with a relatively thick thickness may have higher heat dissipation performance than a portion formed with a thin thickness. For example, in the exemplary configuration of FIG. 4, the thickness of the front protrusion (420F) located at portion B1 may be formed to be thicker than the thickness of the rear protrusion (420R) located at portion B1'. In this case, it can be said that the front protrusion (420F) has higher heat dissipation performance than the rear protrusion (420R).

[0140] Meanwhile, in FIGS. 7 to 9, etc., for convenience of explanation, the boundary between the main body (410) and the protrusion (420) is drawn with a dotted line. However, this corresponds to one embodiment, and the protrusion (420) and the main body (410) may not be clearly distinguished.

[0141]

[0142] In a single battery cell (110), high-temperature regions may be formed in multiple locations, and there may be temperature differences between the multiple high-temperature regions. In the above-described embodiment of the present invention, it can be said that the heat dissipation performance is differentiated between the different protrusions (420) provided on a single heat dissipation member (400). Accordingly, according to the above-described embodiment of the present invention, appropriate cooling can be achieved for each location for multiple high-temperature regions having temperature differences. Accordingly, partial temperature deviations in a single battery cell (110) can be more effectively addressed.

[0143] For example, in a battery cell (110), a portion where an electrode terminal (111) is positioned may have a higher temperature than other portions. However, a temperature difference may also exist between the electrode terminals (111). In particular, a portion where a negative terminal is positioned in a battery cell (110) may have a higher temperature than a portion where a positive terminal is positioned. In this case, in the exemplary configurations of FIGS. 7 to 9, by arranging the front protrusion (420F) on the negative terminal side and the rear protrusion (420R) on the positive terminal side, the heat dissipation performance of the protrusion (420) positioned on the negative terminal side may be higher than the heat dissipation performance of the protrusion (420) positioned on the positive terminal side. Therefore, by dissipating heat on the negative terminal side, which has a relatively high temperature, more quickly than on the positive terminal side, it can contribute to reducing the temperature difference between the negative terminal side and the positive terminal side.

[0144]

[0145] Fig. 10 is a drawing schematically showing the configuration of a heat dissipation member (400) according to another embodiment of the present invention.

[0146] As illustrated in FIG. 10, the heat dissipation member (400) may have an inner protrusion (420) and an outer protrusion (420) arranged in the longitudinal direction (Y-axis direction) of the battery cell (110). Here, the inner and outer sides indicate relative positions, and a part that is positioned relatively close to the center of the battery cell (110) may be referred to as the inner part, and a part that is positioned relatively far from the center of the battery cell (110) may be referred to as the outer part. In the embodiment of FIG. 10, the protrusion (420) of the part indicated by 420B may be the outer protrusion, and the protrusion (420) of the part indicated by 420C may be the inner protrusion.

[0147] The outer protrusions (420B) and / or the inner protrusions (420C) may be provided in two or more. For example, as illustrated in FIG. 10, two outer protrusions (420B) may be included and positioned at both ends in the longitudinal direction of the heat dissipation member (400). In this case, the inner protrusions (420C) may be positioned between the two outer protrusions (420B). Furthermore, the inner protrusions (420C) may be positioned facing the central portion of the battery cell (110) in the longitudinal direction. In addition, the outer protrusions (420B) and / or the inner protrusions (420C) may be positioned to be spaced apart from each other by a predetermined distance in the longitudinal direction of the battery cell (110).

[0148] In the case of battery cells (110) arranged opposite to the heat dissipation member (400), high-temperature parts may exist both on the inner and outer sides in the longitudinal direction. In the above-described exemplary configuration, the outer protrusion (420B) may be responsible for heat dissipation of the outer high-temperature part, and the inner protrusion (420C) may be responsible for heat dissipation of the inner high-temperature part. For example, in the exemplary embodiment of FIG. 10, two outer protrusions (420B) may cool the parts indicated by C1 and C1', and one inner protrusion (420C) may cool the part indicated by C2. Therefore, according to this exemplary configuration, heat from the high-temperature parts arranged in various parts on the inner and outer sides of the battery cell (110) may be quickly and smoothly discharged by the heat dissipation member (400).

[0149]

[0150] In the above implementation configuration, the outer protrusion (420B) and the inner protrusion (420C) may be configured differently in shape or structure. In particular, the outer protrusion (420B) and the inner protrusion (420C) may be configured differently in heat dissipation performance.

[0151] For example, referring to the bar illustrated in FIG. 10, the outer protrusion (420B) and the inner protrusion (420C) may be configured to have different degrees of protrusion. More specifically, the outer protrusion (420B) may be configured to protrude relatively more than the inner protrusion (420C). In particular, the outer protrusion (420B) may have a larger heat dissipation area than the inner protrusion (420C). In other words, the inner protrusion (420C) may be configured to be smaller than the outer protrusion (420B).

[0152] According to this implementation configuration, when there is a temperature difference between the part facing the outer protrusion (420B) and the part facing the inner protrusion (420C), the temperature difference can be appropriately responded to by making the heat dissipation performance different. For example, taking a pouch-type cell as an example, the end parts indicated by C1 and C1' may have a higher temperature than the central part indicated by C2 because the electrode terminals (111) are positioned close to each other. In this case, since the protrusion area of ​​the outer protrusion (420B) is larger than that of the inner protrusion (420C), cooling of the relatively high temperature part, particularly the high temperature part on the electrode terminal (111) side, can be better achieved. Therefore, the local temperature deviation of the battery cell (110) can be responded to more effectively.

[0153]

[0154] The above heat dissipation member (400) may be included in a plurality of battery modules. In addition, a plurality of heat dissipation members (400) may be arranged in parallel along the stacking direction of the battery cells (110). For example, referring to the embodiments illustrated in FIGS. 2 and 3, when a plurality of battery cells (110) are stacked in the left-right direction (X-axis direction) in the cell assembly (100), a plurality of heat dissipation members (400) may also be stacked in parallel in the left-right direction.

[0155] At this time, each heat dissipation member (400) may be arranged to face different battery cells (110) or to face different side surfaces of the battery cells (110). Furthermore, at least some of the plurality of heat dissipation members (400) may be interposed between adjacent battery cells (110). In this case, the adjacent battery cells (110) between which the heat dissipation members (400) are interposed may be spaced apart by a certain distance to accommodate the heat dissipation members (400). In addition, at least other some of the plurality of heat dissipation members (400) may be arranged on the outside of the cell assembly (100). In particular, on each of the left and right sides of the cell assembly (100) having battery cells (110) stacked left and right, the heat dissipation members (400) may be stacked to face the outermost cell.

[0156] Meanwhile, in the embodiment illustrated in FIG. 3, a heat dissipation member (400) is depicted as interposed between all adjacent cells, but the present invention is not necessarily limited to this form. For example, the heat dissipation member (400) may be interposed between each cell group including multiple battery cells (110).

[0157]

[0158] In the embodiment configuration including a plurality of heat dissipation members (400) as described above, at least some of the plurality of heat dissipation members (400) may be configured to have different protrusion shapes. This will be described in more detail with additional reference to FIG. 11, etc.

[0159] Fig. 11 is a drawing schematically showing the configuration of different heat dissipation members (400) included in a battery module according to one embodiment of the present invention. That is, a battery module according to one embodiment of the present invention may include a plurality of heat dissipation members (400), but the plurality of heat dissipation members (400) are not all formed in the same shape, and may include both a heat dissipation member (400) configured in a shape like that of Fig. 11 (a) and a heat dissipation member (400) configured in a shape like that of Fig. 11 (b).

[0160] In Fig. 11, when comparing the heat dissipation member (400) illustrated in (a) with the heat dissipation member (400) illustrated in (b), the heat dissipation member (400) illustrated in (b) has a wider protrusion (420) than the heat dissipation member (400) illustrated in (a). Specifically, in the heat dissipation member (400) illustrated in (a), the front protrusion (420F) and the rear protrusion (420R) may have widths as indicated by Wa and Wa', respectively. In addition, in the heat dissipation member (400) illustrated in (b), the front protrusion (420F) and the rear protrusion (420R) may have widths as indicated by Wb and Wb', respectively. At this time, looking at the sizes of Wa, Wb, Wa', and Wb', Wa <Wb, Wa'<Wb'의 관계를 갖는다고 할 수 있다. 각각의 돌출부(420)가 동일한 높이를 갖는 경우, (b)의 방열 부재(400)는 (a)의 방열 부재(400)보다 더 넓은 표면적을 갖는다고 할 수 있다.

[0161] In this case, the heat dissipation member (400) of (b) can be said to have superior heat dissipation performance than the heat dissipation member (400) of (a). That is, in the above-described embodiment, it can be said that at least some of the plurality of heat dissipation members (400) are configured to have different heat dissipation performances. In addition, different heat dissipation members (400) can have differences in protrusion shape or heat dissipation performance through protrusion height, thickness, etc.

[0162] According to this embodiment configuration, it is possible to more effectively respond to a temperature difference occurring between opposing battery cells (110). For example, in the embodiment configuration illustrated in FIG. 3, in the stacking direction of the cell assembly (100), a battery cell (110) located in the center, such as the portion indicated by D1, and a battery cell (110) located in the outer side, such as the portion indicated by D2, may have differences in temperature or temperature distribution, etc. For example, a battery cell (110) stacked relatively in the center, such as the portion D1, may have a higher temperature than a battery cell (110) stacked relatively in the outer side, such as the portion D2. Accordingly, a heat dissipation member (400) positioned in the center, such as the portion D1, may have a larger area of ​​a protrusion (420) than a heat dissipation member (400) positioned in the outer side, such as the portion D2. For example, the heat dissipation member (400) of FIG. 11 (b) may be placed in the D1 portion of FIG. 3, and the heat dissipation member (400) of FIG. 11 (a) may be placed in the D2 portion of FIG. 3.

[0163] According to this embodiment of the present invention, a heat dissipation member (400) having a shape suitable for each of the multiple battery cells (110) included in the cell assembly (100) can be provided. Accordingly, not only can the partial temperature deviation for each battery cell (110) be reduced, but the temperature deviation between different battery cells (110) can also be effectively reduced.

[0164]

[0165] FIG. 12 is a drawing schematically showing the configuration of different heat dissipation members (400) included in a battery module according to another embodiment of the present invention.

[0166] Referring to FIG. 12, the battery module according to the present invention may include heat dissipation members (400) of different shapes, as indicated by (a) and (b). In particular, the heat dissipation member (400) of (b) may further include an inner protrusion (420C) in addition to an outer protrusion (420B), unlike the heat dissipation member (400) of (a). As described in the embodiment of FIG. 10 above, the inner protrusion (420C) may serve to more quickly and smoothly absorb and discharge heat toward the central portion of the opposing battery cell (110).

[0167] In the case of battery cells (110) stacked in the central portion of the cell assembly (100), such as in part D1 of FIG. 3, the temperature of the central portion may be formed higher in the longitudinal direction (Y-axis direction) than that of battery cells (110) stacked in the outer portion, such as in part D2. Therefore, it may be preferable to interpose a heat dissipation member (400) of FIG. 12 (b) having an inner protrusion (420C) formed between the battery cells (110) stacked in the central portion of the cell assembly (100), such as in part D1 of FIG. 3. On the other hand, it may be preferable to interpose a heat dissipation member (400) of FIG. 12 (a) having no inner protrusion (420C) formed between the battery cells (110) stacked in the outer portion of the cell assembly (100), such as in part D2 of FIG. 3.

[0168] According to this embodiment, a suitable heat dissipation member (400) can be provided considering the stacking position of the battery cells (110). In particular, according to one embodiment, the temperature of the centrally stacked battery cells (110) can be prevented from becoming excessively high. Therefore, temperature uniformity can be more advantageously achieved not only within a single battery cell (110), but also throughout the entire cell assembly (100).

[0169]

[0170] FIG. 13 is a drawing schematically showing the configuration of different heat dissipation members (400) included in a battery module according to another embodiment of the present invention.

[0171] Referring to Fig. 13, the battery module according to the present invention may include heat dissipation members (400) of different shapes, as indicated by (a) and (b). Here, the heat dissipation member (400) of (a) may have a front protrusion (420F) formed wider than a rear protrusion (420R), and the heat dissipation member (400) of (b) may have a rear protrusion (420R) formed wider than the front protrusion (420F). That is, a plurality of heat dissipation members (400) included in one battery module may include a heat dissipation member (400) having a large front protrusion (420F) and a heat dissipation member (400) having a large rear protrusion (420R).

[0172] In particular, when a plurality of bidirectional battery cells (110) are stacked in which the positive and negative terminals are positioned on opposite sides, the arrangement of the positive and negative terminals may vary between different battery cells (110). For example, some groups of battery cells (110) may be arranged in such a way that the positive terminals are positioned on the front side, while other groups of battery cells (110) may be arranged in such a way that the negative terminals are positioned on the front side.

[0173] At this time, depending on the arrangement of the electrode terminals (111) of the opposing battery cells (110), the heat dissipation member (400) of Fig. 13 (a) or the heat dissipation member (400) of Fig. 13 (b) may be arranged in response. For example, for a battery cell (110) in which the negative terminal is arranged on the front side, the heat dissipation member (400) of Fig. 13 (a) in which the front protrusion (420F) is formed to be large may be arranged in response. On the other hand, for a battery cell (110) in which the negative terminal is arranged on the rear side, the heat dissipation member (400) of Fig. 13 (b) in which the rear protrusion (420R) is formed to be large may be arranged in response. Furthermore, for a cell assembly (100) in which the position of the negative terminal is continuously changed between the front and the rear for serial connection between battery cells (110), a heat dissipation member (400) with a large front protrusion (420F) and a heat dissipation member (400) with a large rear protrusion (420R) may be alternately and repeatedly stacked.

[0174] According to this implementation configuration, the temperature deviation can be reduced more effectively even for the alternately stacked configuration of battery cells (110) included in the cell assembly (100).

[0175]

[0176] Fig. 14 is a drawing schematically showing the configuration of a heat dissipation member (400) according to another embodiment of the present invention.

[0177] Referring to Fig. 14, the heat dissipation member (400) may have a notch formed therein, as indicated by N. In particular, the notch (N) may be formed at an end portion on the side where the cooling member (300) is positioned. For example, when the cooling member (300) is positioned at the bottom of the heat dissipation member (400), the notch (N) may be formed at the bottom of the heat dissipation member (400).

[0178] The above notch (N) may be formed in a concave shape inward from the end. For example, as illustrated in FIG. 14, the notch (N) may be formed in a concave cut shape from the lower end of the heat dissipation member (400) toward the upper end. Furthermore, a plurality of notches (N) may be formed along the front end of the heat dissipation member (400). For example, as illustrated in FIG. 14, when the heat dissipation member (400) is formed to extend long along the front-back direction (Y-axis direction), a plurality of notches (N) may be arranged in the front-back direction at the lower end of the heat dissipation member (400). In particular, a plurality of notches (N) may be arranged spaced apart from each other. In this case, it can be said that an unevenness is formed at the end of the heat dissipation member (400) due to the notches (N).

[0179] A portion of the heat dissipation member (400) where a notch (N) is formed may be in direct or indirect contact with the cooling member (300). For example, a thermal resin may be interposed between the heat dissipation member (400) and the cooling member (300). At this time, the notch (N) portion of the heat dissipation member (400) may be in contact with the thermal resin. In particular, the notch (N) portion of the heat dissipation member (400) may be configured in a form that is at least partially inserted into the thermal resin. Furthermore, a portion of the heat dissipation member (400) where a notch (N) is formed, such as a protruding portion, may be inserted into the thermal resin in an upright plate shape, such as a main body portion (410) or a protrusion portion (420), as illustrated in FIG. 14.

[0180] According to this embodiment of the present invention, the heat transfer performance of the heat dissipation member (400) and the cooling member (300) can be increased. In addition, according to the above embodiment, the assembling and fixing properties can be improved without increasing the volume or weight of the heat dissipation member (400).

[0181]

[0182] The above heat dissipation member (400) may be configured to form a partial difference in the distance from the opposing battery cell (110). This will be described in more detail with additional reference to FIG. 15.

[0183] FIG. 15 is a drawing schematically showing a configuration in which a heat dissipation member (400) according to one embodiment of the present invention is opposed to one battery cell (110).

[0184] Referring to Fig. 15, the battery cell (110) and the heat dissipation member (400) may be arranged to face each other in the horizontal direction (X-axis direction) while standing vertically (Z-axis direction). At this time, the heat dissipation member (400) may be configured so that a partial difference is formed in the separation distance from the battery cell (110). More specifically, a portion indicated as F1 in the heat dissipation member (400) may be formed closer to the battery cell (110) than other portions of the heat dissipation member (400). That is, the horizontal separation distance from the battery cell (110) at the portion indicated as F1 in the heat dissipation member (400) may be formed shorter than the horizontal separation distance from the battery cell (110) at the portion indicated as F2 or F3. Here, a short separation distance may include a case where the distance is 0, that is, a case where the battery cell (110) and the heat dissipation member (400) are in direct contact.

[0185] In particular, when the heat dissipation member (400) is provided with a main body (410) and a protrusion (420), at least a portion of the protrusion (420) may be formed to have a shorter distance from the battery cell (110) compared to other portions. For example, in the exemplary configuration of FIG. 15, the portion indicated by F1 may be a portion belonging to the protrusion (420) and the portion indicated by F3 may be a portion belonging to the main body (410). At this time, the portion F1 corresponding to the protrusion (420) may be arranged closer to the battery cell (110) compared to the portion F3 corresponding to the main body (410).

[0186] In addition, in the protrusion (420), the separation distance from the battery cell (110) may be formed partially differently. For example, both parts F1 and F2 in FIG. 15 may belong to one protrusion (420) as indicated in part B1 of FIG. 4. In this case, even within the same protrusion (420), the separation distances for the cells in the parts indicated as F1 and F2 may be different.

[0187] According to this implementation configuration, heat from the high temperature side can be transferred more quickly and smoothly to the cooling member (300). For example, in the battery cell (110) illustrated in FIG. 15, the portion indicated as J1 may be a high temperature side, the portion indicated as J2 may be a medium temperature side, and the portion indicated as J3 may be a low temperature side. In this case, the F1 portion of the heat dissipation member (400) is a portion facing the high temperature side (J1) of the battery cell (110) and can directly absorb the heat from the high temperature side (J1). In addition, the heat absorbed from the F1 portion can be transferred to the cooling member (300) via the F2 portion and the F3 portion of the heat dissipation member (400). At this time, when the heat from the high temperature side (J1) passes through the F2 portion of the heat dissipation member (400), the distance between the heat dissipation member (400) and the battery cell (110) can be formed relatively long. Accordingly, it is possible to suppress the accumulation of heat from the middle temperature section (J2) side together with heat from the high temperature section (J1) side in the F2 portion of the heat dissipation member (400). Therefore, the problem of heat from the high temperature section (J1) side lowering the heat dissipation performance due to heat from the middle temperature section (J2) side can be prevented or reduced.

[0188] Furthermore, in the heat dissipation member (400), a portion (F1) facing the high temperature portion (J1) of the battery cell (110) may be in contact, and a portion (F2) facing the medium temperature portion (J2) may be spaced apart by a predetermined distance. In this case, the heat absorption performance for the high temperature portion (J1) is increased, and a certain degree of insulation effect due to the spaced apart space may be secured on the medium temperature portion (J2) side. Accordingly, when heat on the high temperature portion (J1) side of the battery cell (110) moves toward the cooling member (300), interference by heat on the medium temperature portion (J2) side can be reduced.

[0189] In addition, in the above-described embodiment, the heat dissipation member (400) may have a heat absorption performance on the high temperature part (J1) side superior to the heat absorption performance on the medium temperature part (J2) and / or the low temperature part (J3) side. Accordingly, the temperature uniformity effect of the battery cell (110) by the heat dissipation member (400) may be further improved.

[0190] In the above embodiment, the partial distance difference between the heat dissipation member (400) and the battery cell (110) can be implemented in various ways. For example, as illustrated in FIG. 15, by partially configuring the thickness of the heat dissipation member (400) to be different, a partial difference can be created in the distance between the heat dissipation member (400) and the battery cell (110). In this case, it can be expressed as a protrusion formed at a specific portion of the heat dissipation member (400). As another example, a thermal conductor can be attached to a specific portion of the heat dissipation member (400), so that a partial difference can be created in the distance between the heat dissipation member (400) and the battery cell (110). As another example, the heat dissipation member (400) can be arranged not in a form that stands parallel to the battery cell (110), but in a form that is inclined at a predetermined angle (greater than 0°) from the vertical direction. In this case, the distance between the heat dissipation member (400) and the battery cell (110) may be partially changed by the inclined arrangement of the heat dissipation member (400). At this time, the heat dissipation member (400) may have a form that is inclined toward the battery cell (110) so that the part on the high temperature part (J1) side is closer than the part on the low temperature part (J3) side.

[0191]

[0192] Meanwhile, in the case of the various preceding embodiments, the pouch-shaped battery with electrode terminals (111) protruding in both directions (forward and backward) has been depicted and described, but the battery module according to the present invention may include various other types of battery cells (110). This will be described in more detail with additional reference to FIG. 16.

[0193] FIG. 16 is an exploded perspective view schematically showing the configuration of one battery cell (110) and one heat dissipation member (400) included in a battery module according to another embodiment of the present invention.

[0194] Referring to FIG. 16, the cell assembly (100) may include a battery cell (110) having electrode terminals (111) provided on the same side. In particular, such a battery cell (110) may be a square battery. For example, in the battery cell (110), two electrode terminals (111), i.e., a positive terminal and a negative terminal, may both be positioned on the upper side, as illustrated in the drawing. In this type of battery cell (110), a high-temperature section may be located on the upper side, particularly between the two electrode terminals (111), such as a portion indicated by Q1.

[0195] At this time, when the cooling member (300) is positioned on the lower side of the battery cell (110), the heat dissipation member (400) may have a main body (410) positioned on the lower side and a protrusion (420) positioned on the upper side. In particular, the high temperature part of the battery cell (110) may appear as one area as indicated by Q1, and the heat dissipation member (400) may be configured in a form that protrudes toward the portion indicated by Q1. At this time, one protrusion (420) is formed on the heat dissipation member (400), and this protrusion (420) may be provided between two electrode terminals (111) in the longitudinal direction (Y-axis direction) of the battery cell (110), particularly in the central portion. In addition, the protrusion (420) may have a form that protrudes and extends upward from the main body (410).

[0196] According to this implementation configuration, temperature deviation reduction performance can be secured for a battery cell (110) in which a high-temperature section is formed in a single area. Furthermore, in the case of a square battery in which the positive and negative terminals are positioned on the same side, the heat dissipation performance for the high-temperature section can be improved by a heat dissipation member (400) having a protruding shape suitable therefor.

[0197] In particular, in the embodiment of Fig. 16, the protrusion (420) may have a portion indicated as K1 and a portion indicated as K2. At this time, the portion K1 may be a portion facing the high temperature portion (Q1) of the battery cell (110). In addition, the portion indicated as K3 in Fig. 16 may be a portion corresponding to the main body (410). In the heat dissipation member (400) of this type, the portion K1 may directly absorb heat from the high temperature portion (Q1), and the portion K2 may transfer heat from the high temperature portion (Q1) to the portion K3. Then, the portion K3 of the heat dissipation member (400) may discharge heat to the cooling member (300).

[0198] The same configuration as described in FIG. 15 can also be applied to the implementation configuration of FIG. 16. That is, the same or similar content as described for the F1, F2, and F3 portions of FIG. 15 can be applied to the K1, K2, and K3 portions of FIG. 16.

[0199]

[0200] Fig. 17 is a drawing schematically showing the configuration of a heat dissipation member (400) according to another embodiment of the present invention.

[0201] Referring to Fig. 17, the heat dissipation member (400) may be configured to protrude toward the high temperature portion, but at least a portion of the protruding portion may be bent. More specifically, the high temperature portion may be located at the portions indicated by Q2 and Q2' in the battery cell (110). At this time, the heat dissipation member (400) may be configured such that the protruding portion (420) protrudes from the main body (410) toward the high temperature portions (Q2, Q2'), but has a bent portion. In particular, in the exemplary configuration of Fig. 17, the front protrusion (420F) and the rear protrusion (420R) may have a form in which they protrude upward from the front and rear ends of the main body (410), but may be bent in a predetermined direction. Furthermore, the front protrusion (420F) may have a form in which it protrudes upward and then has an upper end bent toward the rear (+Y-axis direction). In addition, the rear protrusion (420R) may have a shape in which the upper end protrudes upward and is bent toward the front (-Y-axis direction).

[0202] According to the above-described embodiment, the heat dissipation member (400) can more effectively transfer heat from the high temperature side of the battery cell (110) to the cooling member (300). In particular, in the case of the above-described embodiment, the heat dissipation member (400) can avoid a specific part of the battery cell (110) through the bent shape of the protrusion (420). For example, in the embodiment of FIG. 17, the part indicated by Q3 may be a medium temperature part. At this time, the heat dissipation member (400) can be configured so that the path of heat absorbed from the high temperature part (Q2, Q2') side does not pass through the medium temperature part (Q3) side as much as possible through the bent structure of the protrusion (420). In this case, the heat from the high temperature part (Q2, Q2') side can be directly discharged to the cooling member (300) through the main body (410). Therefore, the heat dissipation efficiency for the high temperature side of the battery cell (110) is further improved, which can be more advantageous in eliminating local temperature deviations in the battery cell (110) or battery module.

[0203]

[0204] Fig. 18 is a drawing schematically showing the configuration of a heat dissipation member (400) according to another embodiment of the present invention.

[0205] Referring to Fig. 18, the heat dissipation member (400) may include a main body (410) and a plurality of protrusions (420). At this time, the main body (410) may be configured so that areas corresponding to the multiple protrusions (420) are at least partially separated.

[0206] For example, the heat dissipation member (400) may be provided with a first protrusion (421), a second protrusion (422), and a third protrusion (423). In addition, a main body (410) may be arranged at the bottom of these multiple protrusions (420). At this time, the main body (410) may have slits formed in a concave shape in the inward direction at the portions where each of the protrusions (421, 422, 423) is provided, as indicated by L1 and L2. These slits (L1, L2) may be configured so that the main body (410) can be divided into unit regions corresponding to each of the protrusions (420).

[0207] More specifically, a first slit (L1) may be formed in the lower direction at the upper edge between the portion where the first protrusion (421) and the second protrusion (422) are connected in the main body portion (410). And, by this first slit (L1), a part of the main body portion (410) may be divided into a first main body portion (411) and a second main body portion (412). In addition, a second slit (L2) may be formed in the lower direction at the upper edge between the portion where the second protrusion (422) and the third protrusion (423) are connected in the main body portion (410). And, by this second slit (L2), a part of the main body portion (410) may be divided into a second main body portion (412) and a third main body portion (413). In this embodiment, the main body (410) is divided into three unit areas by two slits (L1, L2), which can correspond to three protrusions (420) respectively.

[0208] According to the above implementation configuration, since there is a main body (410) corresponding to each of the plurality of protrusions (420), the heat dissipation performance of each protrusion (420) can be further improved. In particular, heat absorbed by a specific protrusion (420) is prevented from being hindered in movement due to heat absorbed by another protrusion (420), and heat can be discharged toward the cooling member (300).

[0209] For example, in the embodiment of FIG. 18, the portion facing the first protrusion (421) may be a higher temperature portion than the portion facing the second protrusion (422). For example, the first protrusion (421) may be the outer protrusion (420B) in the embodiment of FIG. 10, and the second protrusion (422) may be the inner protrusion (420C) in the embodiment of FIG. 10. At this time, the heat absorbed by the first protrusion (421) may be directly transferred to the cooling member (300) located below through the first main body (411). In this case, the heat absorbed by the second protrusion (422) may not be properly transferred to the first main body (411) due to the first slit (L1). Accordingly, when the heat of the first protrusion (421) is discharged through the first main body (411), the heat of the second protrusion (422) can be prevented from accumulating and the discharge performance from deteriorating.

[0210] In the above-described embodiment, the slits (L1, L2) may be configured in a form that does not completely separate the multiple main body parts (411, 412, 413) from each other. For example, the slits (L1, L2) may extend downward from the top of the main body part (410), but may not extend to the bottom of the main body part (410). In this case, since the first to third main body parts (411, 412, 413) have parts that are connected to each other, the assembling ability, handling ability, structural stability, etc. of the heat dissipation member (400) can be secured to a certain level or higher.

[0211]

[0212] Fig. 19 is a cross-sectional view schematically illustrating the configuration of a battery module according to another embodiment of the present invention. For example, Fig. 19 can be considered a modified example of the embodiment configuration of Fig. 3.

[0213] Referring to Fig. 19, a cooling member (300) may be provided inside a module case (200). For example, a hollow space is formed in the lower plate (220) of the module case (200), and coolant may flow through this hollow space. In this case, it can be said that the hollow space formed in the module case (200) functions as a cooling passage (H).

[0214] In this embodiment, it can be said that the cooling member (300) is configured by being integrated into at least a portion of the module case (200). In other words, the module case (200) can be configured in a form in which a cooling function or cooling configuration is built-in. In this embodiment, the heat dissipation member (400) can be in direct contact with the cooling member (300) or the distance between them can be shortened. For example, as illustrated in FIG. 19, when a thermal resin (T) is interposed between the heat dissipation member (400) and the cooling member (300), the heat of the heat dissipation member (400) can be directly transferred to the cooling member (300) through the thermal resin (T). Therefore, in this case, the cooling performance or cell temperature uniformity performance by the heat dissipation member (400) can be further improved.

[0215]

[0216] In addition, the cooling member (300) does not necessarily have to have a cooling passage (H) in a hollow shape as illustrated in FIG. 3 or FIG. 19. For example, the cooling member (300) may be configured to expose a specific portion and discharge heat through contact with the outside air. In particular, in the battery module illustrated in FIG. 1, the present invention can be implemented in a form in which the cooling member (300) is removed. For example, when air comes into contact with the lower space of the module case (200), heat transferred from the heat dissipation member (400) to the lower plate (220) of the module case (200) can be discharged to the outside through the outside air. In this case, the module case (200) and the cooling member (300) can be said to be integrated into one.

[0217]

[0218] Referring to FIG. 19, the cell assembly (100) may further include a barrier (120) in addition to the battery cell (110). One or more barriers (120), particularly a plurality of barriers (120), may be provided in one cell assembly (100). Furthermore, the barrier (120) may be arranged between adjacent battery cells (110) in the cell assembly (100), or at the outermost portion of the cell assembly (100) in the stacking direction. The barrier (120) may be configured in a plate shape and may face the surface of the battery cell (110), particularly the outer surface of the storage portion (S1) of the pouch-type cell. Furthermore, the barrier (120) may be attached to the outer surface of the storage portion (S1) of the pouch-type cell. Alternatively, the barrier (120) may be arranged to at least partially face the heat dissipation member (400).

[0219] The barrier (120) may be configured to absorb swelling of the battery cells (110). To this end, the barrier (120) may be formed of an elastic material, such as urethane or rubber. In particular, the barrier (120) may effectively absorb swelling of the central portion in the height direction (Z-axis direction) for a plurality of stacked battery cells (110).

[0220] Additionally, the barrier (120) may be configured to block heat and / or flame between adjacent battery cells (110) in the cell assembly (100). To this end, the barrier (120) may be formed of a material such as silicon, mica, GFRP (Glass Fiber Reinforced Plastic), or CFRP (Carbon Fiber Reinforced Plastic).

[0221] In addition, the barrier (120) may be configured to perform various other functions and may include various other materials.

[0222]

[0223] The heat dissipation member (400) may be attached to the surface of the battery cell (110) included in the cell assembly (100). To this end, the heat dissipation member (400) may have an adhesive material on the surface facing the battery cell (110). For example, in the case of the heat dissipation member (400) included in part D1 of FIG. 3, a double-sided adhesive tape may be provided on the left and right surfaces, respectively, so that it may be adhesively fixed to the battery cell (110).

[0224]

[0225] Figure 20 is a perspective view schematically showing the configuration of a battery pack according to one embodiment of the present invention.

[0226] Referring to FIG. 20, a battery pack according to the present invention may include one or more battery modules according to the present invention described above, as indicated by M. In addition, a battery pack according to the present invention may further include various other components in addition to the battery module (M) according to the present invention. For example, a battery pack according to the present invention may further include components of a battery pack known at the time of filing of the present invention, such as a BMS (Battery Management System), a bus bar, a relay, a current sensor, etc.

[0227] In addition, the battery pack according to the present invention may further include a pack case, as indicated by PC in FIG. 20. This pack case (PC) may provide a space in which the battery module according to the present invention can be stored. In particular, when the battery pack includes multiple battery modules, the pack case (PC) may be partitioned into spaces for storing the multiple battery modules using cross beams or the like.

[0228] In such a battery pack configuration, the pack case (PC) can function at least partially as a cooling member (300). In particular, a cooling passage may be formed in at least a portion of the pack case (PC) for cooling one or more battery modules. For example, in the exemplary configuration of FIG. 20, a cooling passage (H) may be formed in a base plate (BP) of the pack case (PC) on which the battery module is mounted. In addition, in order to allow a coolant such as cooling water to flow in and out of the cooling passage (H) of the base plate (BP), a coolant inlet and outlet, as indicated by PI and PO, may be provided in the pack case (PC).

[0229]

[0230] FIG. 21 is a perspective view schematically showing the configuration of a battery pack according to another embodiment of the present invention.

[0231] Referring to FIG. 21, a battery pack according to the present invention includes a battery module according to the present invention, but may be configured such that the module case (200) and the pack case are not separately included, and the module case (200) of the battery module functions as a pack case (PC). In this case, components of the battery pack, such as a BMS, a bus bar, and a relay, may be included inside the module case (200). A battery pack of this type is also called a cell-to-pack (CTP) because the battery cells (110) are directly stored in the pack case (PC). Recently, development of such CTP-type battery packs has also been active, and the present invention can also be applied to such CTP-type battery packs.

[0232] In particular, the pack case (PC) and module case (200) may include a cooling configuration, as described in the embodiment of FIG. 20 above. In this case, the heat of the heat dissipation member (400) disposed between the plurality of battery cells (110) may be in direct contact with the pack case (PC), thereby discharging the heat of the battery cells (110) to the outside through the coolant. For example, the lower ends of the plurality of battery cells (110) and the heat dissipation member (400) may be in contact with the base plate (BP) of the pack case (PC) with a thermal resin interposed therebetween. In addition, a cooling channel (H) may be formed in the base plate (BP), so that the coolant introduced through the inlet (PI) may flow through the cooling channel and be discharged to the outside through the outlet (PO). At this time, the heat of the heat dissipation member (400) may be quickly and smoothly transferred to the base plate (BP) of the pack case (PC). According to this implementation configuration, the energy density of the battery pack is improved, and the heat transfer path is reduced, so that the temperature uniformity effect and cooling effect by the heat dissipation member (400) can be further improved.

[0233]

[0234] The battery module or battery pack according to the present invention can be applied to automobiles such as electric vehicles or hybrid vehicles. That is, an automobile according to the present invention may include a battery module according to the present invention or a battery pack according to the present invention. Furthermore, an automobile according to the present invention may further include various other components included in the automobile in addition to the battery module or battery pack. For example, an automobile according to the present invention may further include a body, a motor, a control device such as an electronic control unit (ECU), and the like, in addition to the battery module according to the present invention.

[0235] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and various modifications and variations are possible by a person having ordinary skill in the art to which the present invention pertains within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below.

[0236] (Explanation of symbols)

[0237] 100: Cell Assembly

[0238] 110: Battery cell

[0239] 111: Electrode terminal

[0240] 120: Barrier

[0241] 200: Module Case

[0242] 210: Top, 220: Bottom, 230: Left, 240: Right, 250: Front, 260: Back

[0243] 300: Cooling element

[0244] 400: No heat dissipation

[0245] 410: Main body

[0246] 411: First main body, 412: Second main body, 413: Third main body

[0247] 420: Protrusion

[0248] 420F: Front protrusion, 420R: Rear protrusion

[0249] 420B: Outer protrusion, 420C: Inner protrusion

[0250] 421: first protrusion, 422: second protrusion, 423: third protrusion

[0251] H: Cooling Euro

[0252] N: Notch

[0253] T: Thermal resin

[0254] M: Battery module

[0255] PC: Pack Case

[0256] BP: Base plate

[0257] PI: Inlet

[0258] PO: outlet

Claims

1. A cell assembly comprising a plurality of battery cells, each of which is provided with an electrode terminal and is mutually stacked in at least one direction; A module case accommodating the cell assembly in its internal space; A cooling member positioned on at least one side of the cell assembly, dissipating heat through a coolant; and A heat dissipation member that is arranged opposite to at least one battery cell, transfers heat from the battery cell to the cooling member, and is configured to partially protrude from the cooling member side. A battery module characterized by including a .

2. In paragraph 1, A battery module characterized in that the heat dissipation member has a main body portion located on the cooling member side and a protrusion portion protruding from at least one side of the main body portion and having a narrower width than the main body portion.

3. In paragraph 1, A battery module characterized in that the heat dissipation member is configured to partially protrude from the high temperature side of the opposing battery cell.

4. In paragraph 1, A battery module characterized in that the heat dissipation member is configured to protrude from a portion where the electrode terminals of opposing battery cells are located.

5. In paragraph 1, A battery module, characterized in that the heat dissipation member is configured such that the width of the protruding portion is at least partially different.

6. In paragraph 1, A battery module characterized in that the heat dissipation member is configured to protrude from two or more parts.

7. In paragraph 6, A battery module characterized in that the heat dissipation member is configured to protrude from each of the longitudinal ends of the battery cell.

8. In paragraph 6, A battery module characterized in that the heat dissipation member has different heat dissipation performances for two or more protruding portions.

9. In paragraph 6, A battery module, characterized in that the heat dissipation member has an outer protrusion and an inner protrusion arranged in the longitudinal direction of the battery cell.

10. In paragraph 1, A battery module characterized in that the heat dissipation member is configured to be included in large numbers and arranged along the stacking direction of the battery cells.

11. In paragraph 10, A battery module characterized in that at least some of the plurality of heat dissipation members are configured to have different protruding shapes from each other.

12. In paragraph 1, A battery module characterized in that the heat dissipation member has a notch formed at an end portion on the side where the cooling member is located.

13. In paragraph 1, A battery module characterized in that the heat dissipation member is configured to form a partial difference in the distance from the opposing battery cells.

14. In paragraph 1, A battery module characterized in that the heat dissipation member is configured in a bent shape with at least a portion of the protruding portion.

15. A battery pack comprising a battery module according to any one of claims 1 to 14.

16. A vehicle comprising a battery module according to any one of claims 1 to 14.

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