Battery pack and vehicle comprising battery pack

Abstract

A battery pack according to one embodiment of the present invention comprises: a plurality of battery cells; a cell frame for accommodating the plurality of battery cells; a first filling member filled between the plurality of battery cells in the cell frame; and a second filling member filled in the cell frame so as to be in contact with the first filling member.

Description

Battery pack and vehicle including same

[0001] The present invention relates to a battery pack and a vehicle including the same, and more particularly, to a battery pack having improved cooling performance and safety and a vehicle including the same.

[0002] This application claims priority to Korean Patent Application No. 10-2024-0042000, filed on March 27, 2024, and all contents disclosed in the specification and drawings of the said application are incorporated by reference into this application.

[0003] Secondary batteries, which boast high electrical properties such as high energy density and easy applicability across a wide range of product categories, are widely used not only in portable devices but also in electric vehicles (EVs) and hybrid electric vehicles (HEVs) powered by electrical power sources. These batteries are attracting attention as a new energy source for environmental friendliness and energy efficiency, not only because they can dramatically reduce fossil fuel use, but also because they produce no byproducts from energy use.

[0004] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, i.e., unit battery cells, is approximately 2.5 V to 4.5 V. Therefore, when a higher output voltage is required, multiple battery cells are connected in series to form a battery pack. Furthermore, depending on the charge / discharge capacity required for the battery pack, a number of battery cells are connected in parallel to form a battery pack. Therefore, the number of battery cells included in the battery pack can be set in various ways depending on the required output voltage or charge / discharge capacity.

[0005] Recently, demand for large-capacity battery packs, which are comprised of multiple battery cells, has been increasing to secure capacity. For these larger-capacity battery packs, ensuring cooling performance is becoming increasingly important. Furthermore, with battery pack safety becoming increasingly important, structures that prevent heat spread to adjacent cells in the event of a thermal runaway event in a specific battery cell are emerging as a crucial design factor.

[0006] Therefore, there is a need to find a way to provide a battery pack and a vehicle including the same that can secure safety by improving cooling performance while also preventing heat transfer to adjacent battery cells in the event of a situation such as thermal runaway of a specific battery cell.

[0007] Accordingly, an object of the present invention is to provide a battery pack capable of improving cooling performance and a vehicle including the same.

[0008] In addition, another object of the present invention is to provide a battery pack and a vehicle including the same that can improve safety by preventing heat transfer.

[0009] In addition, another object of the present invention is to provide a battery pack capable of increasing manufacturing efficiency and an automobile including the same.

[0010] 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.

[0011] To achieve the above object, the present invention provides a battery pack comprising: a plurality of battery cells; a cell frame accommodating the plurality of battery cells; a first filling member filled between the plurality of battery cells within the cell frame; and a second filling member filled within the cell frame so as to be in contact with the first filling member.

[0012] Additionally, preferably, the second filling member can be filled to cover the first filling member so as to seal the first filling member within the cell frame.

[0013] Additionally, preferably, the first filling member may be filled so that a portion of the plurality of battery cells is submerged within the cell frame, and the second filling member may be filled so that the remaining portion of the plurality of battery cells is submerged within the cell frame.

[0014] In addition, preferably, the cell frame includes a frame body that accommodates the plurality of battery cells; and a frame cover that is coupled to the frame body and covers the upper side of the plurality of battery cells, and the first filling member can be filled to a height that is equal to or lower than the height of the upper part of the frame body.

[0015] Additionally, preferably, the second filling member can be continuously filled from the frame cover to the portion within the frame body where it comes into contact with the first filling member.

[0016] Additionally, preferably, the first filling member may include a phase change material.

[0017] Additionally, preferably, the first filling material may include a paraffin material.

[0018] Additionally, preferably, the second filling member may be made of the same material as the first filling member.

[0019] Additionally, preferably, the second filling member may be formed of glass bead resin.

[0020] Additionally, preferably, the second filling member may be provided with silicone foam.

[0021] In addition, preferably, the frame cover includes a cover body coupled to the frame body; and a guide protrusion extending from a rim of the cover body to a predetermined height, and the second filling member can be filled up to an end of the guide protrusion.

[0022] Additionally, preferably, the frame cover may include a cell insertion portion formed on the cover body and into which ends of the plurality of battery cells are inserted.

[0023] Additionally, preferably, the battery pack may include a heat sink provided on one side of the cell frame for cooling the plurality of battery cells.

[0024] Additionally, preferably, an opening may be formed on one side of the cell frame facing the heat sink to expose the ends of the plurality of battery cells toward the heat sink.

[0025] Additionally, preferably, the battery pack may include an adhesive member that is provided between the cell frame and the heat sink and seals the first filling member together with the second filling member.

[0026] Additionally, preferably, the battery pack may include a busbar assembly mounted on the cover body at the bottom of the guide jaw and electrically connected to the plurality of battery cells.

[0027] Additionally, preferably, the second filling member can be filled so as to cover the busbar assembly.

[0028] And, the present invention provides a vehicle, characterized in that it includes at least one battery pack according to the above-described embodiments.

[0029] According to various embodiments as described above, a battery pack capable of improving cooling performance and a vehicle including the same can be provided.

[0030] In addition, according to various embodiments as described above, a battery pack and a vehicle including the same can be provided that can improve safety by preventing heat transfer.

[0031] In addition, according to various embodiments as described above, a battery pack capable of increasing manufacturing efficiency and a vehicle including the same can be provided.

[0032] In addition, various additional effects can be achieved through various embodiments of the present invention. These various effects of the present invention will be described in detail in each embodiment, or descriptions of effects easily understandable to those skilled in the art will be omitted.

[0033] 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.

[0034] FIG. 1 is a schematic drawing for explaining a battery pack according to one embodiment of the present invention.

[0035] FIG. 2 is a schematic drawing for explaining the cell frame of the battery pack of FIG. 1.

[0036] Figure 3 is a schematic drawing for explaining the frame cover of the cell frame of Figure 2.

[0037] FIGS. 4 to 9 are schematic drawings for explaining a manufacturing process of a battery pack according to one embodiment of the present invention.

[0038] FIG. 10 is a schematic drawing illustrating a battery pack according to another embodiment of the present invention.

[0039] Fig. 11 is an enlarged view of part A of the battery pack of Fig. 10.

[0040] FIG. 12 is a schematic drawing illustrating a battery pack according to another embodiment of the present invention.

[0041] FIG. 13 is a drawing for explaining a vehicle according to one embodiment of the present invention.

[0042] 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.

[0043] 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.

[0044] 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 location of the target object or the location of the observer.

[0045]

[0046] FIG. 1 is a schematic drawing for explaining a battery pack according to one embodiment of the present invention.

[0047] Referring to FIG. 1, a battery pack (10) may include a battery cell (100), a cell frame (200), a first filling member (300), and a second filling member (400).

[0048] The battery cell (100) may be a secondary battery, and may be provided as a cylindrical secondary battery, a pouch-shaped secondary battery, or a square secondary battery. A plurality of such battery cells (100) may be provided. The plurality of battery cells (100) may be arranged parallel to each other or may be stacked in multiple stages so as to be electrically connected to each other.

[0049] The above cell frame (200) can accommodate the plurality of battery cells (100). To this end, a receiving space for accommodating the plurality of battery cells (100) can be provided in the cell frame (200).

[0050] The first filling member (300) may be filled between the plurality of battery cells (100) within the cell frame (200). The first filling member (300) may implement passive cooling within the cell frame (200). To this end, the first filling member (300) may include a cooling material capable of cooling the battery cells (100). In addition, since the first filling member (300) is filled between the plurality of battery cells (100), in the event of an abnormal situation such as thermal runaway or ignition of a specific battery cell, the first filling member (300) may block heat transmission and flames toward adjacent battery cells. To this end, the first filling member (300) may include a flame retardant material. The material constituting the first filling member (300) will be described in more detail in the related description below.

[0051] The second filling member (400) may be filled within the cell frame (200) so as to be in contact with the first filling member (300). The second filling member (400), together with the first filling member (300), within the cell frame (200), may cool the battery cells (100) and block heat transfer and flames toward adjacent battery cells (100) in the event of an abnormality in the battery cells (100).

[0052] According to one embodiment of the present invention, the cooling performance of the battery cells (100) can be secured with a simpler structure through the first filling member (300) and the second filling member (400) filled between the battery cells (100) within the cell frame (200).

[0053] In addition, according to one embodiment of the present invention, through the first filling member (300) and the second filling member (400), heat transfer and flames, etc. from the trigger cell side to the adjacent cell side can be effectively blocked in an abnormal situation such as thermal runaway.

[0054] Therefore, in the battery pack (10) according to one embodiment of the present invention, both the cooling performance and safety of the battery cells (100) can be secured through the first filling member (300) and the second filling member (400).

[0055]

[0056] The second filling member (400) may be filled to cover the first filling member (300) so as to seal the first filling member (300) within the cell frame (200). Specifically, the second filling member (400) may be filled to completely cover the first filling member (300) within the cell frame (200). According to one embodiment of the present invention, the second filling member (400) may effectively prevent leakage or outflow of the first filling member (300) outside the cell frame (200).

[0057] The first filling member (300) may be filled so that a portion of the plurality of battery cells (100) is submerged within the cell frame (200). In addition, the second filling member (400) may be filled so that the remaining portion of the plurality of battery cells (100) is submerged within the cell frame (200). Consequently, the plurality of battery cells (100) may be completely submerged within the cell frame (200) by the first filling member (300) and the second filling member (400). Therefore, the cooling performance and safety of the battery cells (100) may be further improved.

[0058] Below, the cell frame (200) of the present invention will be examined in more detail.

[0059] FIG. 2 is a schematic drawing for explaining the cell frame of the battery pack of FIG. 1, and FIG. 3 is a schematic drawing for explaining the frame cover of the cell frame of FIG. 2.

[0060] Referring to FIG. 2, FIG. 3 and the preceding FIG. 1, the cell frame (200) may include a frame body (210) and a frame cover (250).

[0061] The above frame body (210) can accommodate the plurality of battery cells (100). To this end, a predetermined accommodation space capable of accommodating the plurality of battery cells (100) can be formed in the frame body (210).

[0062] The above frame cover (250) can be combined with the frame body (210). The above frame cover (250) can cover the upper side of the plurality of battery cells (100) on the upper side of the frame body (210).

[0063] The first filling member (300) may be filled to a height that is equal to or lower than the height of the upper end of the frame body (210). That is, the first filling member (300) may be filled within the frame (210) to a height that does not overflow outside the frame body (210). Therefore, leakage or outflow of liquid outside the frame body (210) due to the filling of the first filling member (300) can be effectively prevented. The filling height of the first filling member (300) may be a preset height for ensuring cooling and safety of the battery cells (100). Therefore, in the present embodiment, leakage or outflow of liquid outside the frame body (210) due to the filling of the first filling member (300) can be more reliably prevented, and cooling and safety of the battery cells (100) can also be ensured. The second filling member (400) can be continuously filled from the frame cover (250) to the portion of the frame body (210) where it comes into contact with the first filling member (300). Therefore, the second filling member (400) can be filled without a separate space within the internal space of the frame cover (250) and the frame body (210). In addition, through the second filling member (400), leakage or outflow of the first filling member (300) outside the cell frame (200) can be more reliably prevented.

[0064] The first filling member (300) may include a phase change material. The first filling member (300) may more stably fix the plurality of battery cells (100) within the cell frame (200) and increase the heat dissipation efficiency of the plurality of battery cells (100), thereby further increasing the cooling performance of the battery cells (100).

[0065] The first filling member (300) increases the thermal mass, thereby delaying the temperature rise of the battery cells (100) even in situations such as rapid charging and discharging of the battery cells (100), thereby preventing a rapid temperature rise of the battery cells (100).

[0066] In addition, the first filling member (300) can perform an insulating role to prevent current from flowing toward adjacent battery cells (100) when damage or other abnormalities occur in at least one specific battery cell (100) among the plurality of battery cells (100).

[0067] In addition, the first filling member (300) can guide the thermal equilibrium of the battery cells (100), thereby preventing cooling deviation of the battery cells (100) and thus preventing local deterioration of the battery cells (100). In addition, by preventing local deterioration of the battery cells (100), the safety of the battery cells (100) can also be significantly increased.

[0068] The first filling member (300) may include a paraffin material as a phase change material. The first filling member (300) including the paraffin material may increase heat capacity while existing in a solid state in a range below a predetermined temperature, and may increase the cooling performance of the battery cells (100) through the latent heat of phase change while changing into a liquid state in a range above a predetermined temperature. The predetermined temperature may be approximately 40°C.

[0069] In addition, the first filling member (300) may include a silicone material. The first filling member (300) including the silicone material can further increase the heat capacity and prevent leakage when the phase change material is liquefied. The silicone material may be, for example, a two-component silicone.

[0070] In addition, the first filling member (300) may include a flame-retardant material having high flame-retardant performance. Accordingly, the first filling member (300) may minimize the risk of fire when a thermal event, such as overheating, occurs in at least one specific battery cell (100) among the plurality of battery cells (100). The flame-retardant material may include, for example, aluminum hydroxide.

[0071] In addition, in this embodiment, the first filling member (300) may be provided with a potting resin that includes all of the paraffin material, the silicone material, and the flame retardant material as the phase change material.

[0072] The second filling member (400) may be formed of the same material as the first filling member (300). For example, the second filling member (400) may be formed of a potting resin that includes a paraffin material as the phase change material, a silicone material, and a flame retardant material. Therefore, according to one embodiment of the present invention, the efficiency of the filling process of the battery pack (10) can be increased through a single filling member.

[0073] The second filling member (400) may be formed of glass bead resin. The glass bead resin can lower the specific gravity of the second filling member (400) and increase the energy density relative to its weight.

[0074] The second filling member (400) may be formed of silicone foam having high elasticity, compression resistance, and flame retardancy. Therefore, according to one embodiment of the present invention, external impacts, etc. can be effectively absorbed and buffered through the second filling member (400), thereby further enhancing the safety of the battery cells (100).

[0075] The above frame cover (250) may include a cover body (251) and a guide jaw (253).

[0076] The above cover body (251) can be combined with the frame body (210). The cover body (251) can be provided in a shape and size that can cover the upper side of the frame body (210).

[0077] The above guide jaw (253) may be formed to extend from the edge of the cover body (251) to a predetermined height. Specifically, the guide jaw (253) may be formed to extend to protrude from the edge end of the cover body (251) to a predetermined height.

[0078] The second filling member (400) can be filled up to the end of the guide jaw (253). According to one embodiment of the present invention, the guide jaw (253) can guide more accurate and stable filling of the second filling member (400), and can also effectively prevent overflow or the like that may occur during filling of the second filling member (400).

[0079] The above frame cover (250) may include a cell insertion portion (255).

[0080] The above cell insertion portion (255) may be formed in the cover body (251). Specifically, the cell insertion portion (255) may be formed in the lower portion of the cover body (251) and may be provided in a number corresponding to the number of the plurality of battery cells (100). End portions of the plurality of battery cells (100) may be inserted into the cell insertion portion (255). Specifically, upper portions of the plurality of battery cells (100) may be inserted into the cell insertion portion (255).

[0081] According to one embodiment of the present invention, one end of the battery cells (100) can be fixed and supported through the cell insertion portion (255), so that the battery cells (100) can be fixed more stably within the cell frame (200). In addition, according to one embodiment of the present invention, since the upper end of the battery cells (100) is fixed through the cell insertion portion (255), movement of the battery cells (100) that may occur during the injection process of the second filling member (400) can also be prevented.

[0082] The above battery pack (10) may include a heat sink (500).

[0083] The heat sink (500) is for cooling the plurality of battery cells (100) and may be provided on one side of the cell frame (200). Specifically, the heat sink (500) may be placed at the bottom of the cell frame (200). The battery pack (10) according to one embodiment of the present invention can further increase the cooling performance of the plurality of battery cells (100) through the heat sink (500).

[0084] An opening (215) may be formed on one side of the cell frame (200) facing the heat sink (500) to expose the ends of the plurality of battery cells (100) toward the heat sink (500). The opening (215) may be formed at the bottom of the frame body (210). The bottoms of the plurality of battery cells (100) may be exposed to the bottom of the frame body (210) through the opening (215) and may be arranged in contact with or adjacent to the heat sink (500). According to one embodiment of the present invention, since the bottoms of the plurality of battery cells (100) are arranged in contact with the heat sink (500) or adjacent to it at a closer position through the opening (215), the cooling performance of the plurality of battery cells (100) may be further improved.

[0085] The above battery pack (10) may include an adhesive member (600).

[0086] The above adhesive member (600) may be provided between the cell frame (200) and the heat sink (500). The adhesive member (600) may guide more stable fixation of the heat sink (500) to the frame body (210) of the cell frame (200).

[0087] The above adhesive member (600) can more stably fix the lower portion of the plurality of battery cells (100) exposed on the opening (215) of the frame body (210) onto the heat sink (500).

[0088] The adhesive member (600) may include a material having high thermal conductivity to enhance the cooling performance of the battery cells (100). In addition, the adhesive member (600) may include a material having high viscosity and hardness to ensure fixing stability.

[0089] The adhesive member (600) can seal the first filling member (300) together with the second filling member (400) within the cell frame (200). Specifically, the second filling member (400) can seal the first filling member (300) at the upper side (+Z-axis direction) of the cell frame (200), and the adhesive member (600) can seal the first filling member (300) at the lower side (-Z-axis direction) of the cell frame (200). Therefore, according to one embodiment of the present invention, the risk of leakage of the first filling member (300), which may occur when the first filling member (300) changes into a liquid phase, can be effectively prevented at both the upper and lower sides (+Z-axis direction and -Z-axis direction) of the cell frame (200).

[0090] The above battery pack (10) may include a busbar assembly (700).

[0091] The above bus bar assembly (700) is electrically connected to the plurality of battery cells (100) and can be mounted on the cover body (251) at the bottom of the guide jaw (253).

[0092] The above busbar assembly (700) may include a busbar member (710) and a bonding wire (730).

[0093] The above busbar member (710) may be provided as a predetermined metal member. The busbar member (710) may be provided in multiple pieces. The bonding wire (730) may guide the connection between the busbar member (710) and the multiple battery cells (730). The bonding wire (730) may be provided in multiple pieces.

[0094] The above frame cover (250) may include a bus bar mounting portion (257).

[0095] The above busbar mounting portion (257) is formed on the upper surface of the frame cover (250) and can accommodate the busbar member (710). To this end, the busbar mounting portion (257) is provided as a receiving groove having a predetermined receiving space from the upper surface of the frame cover (250), and may be provided in a number corresponding to the busbar member (710). For example, the busbar mounting portion (257) may be provided in multiple pieces.

[0096] The above frame cover (250) may include a bus bar connection guide (259).

[0097] The above busbar connection guide (259) is formed on the frame cover (250) and is intended to guide the connection between the busbar member (710) of the bonding wire (730) and the plurality of battery cells (730), and may be provided in a hole structure having a predetermined opening. The busbar connection guide (259) may be provided in multiple pieces and may be provided between the plurality of busbar mounting portions (257).

[0098] The second filling member (400) may be filled so as to cover the busbar assembly (700). Specifically, the second filling member (400) may be filled so as to cover both the plurality of busbar members (710) and the plurality of bonding wires (730). The second filling member (400) may be continuously filled between the busbar assembly (700) and the battery cells (100) in the vertical direction (Z-axis direction) of the battery cells (100) without a break space or a space between the busbar assembly (700) and the battery cells (100). In this way, since the second filling member (400) is continuously filled in the battery cells (100) and the busbar assembly (700) without any interruption, even heat distribution is realized without occurrence of heat distribution deviation in the area between the battery cells (100) and the busbar assembly (700), thereby significantly improving the cooling performance of the battery pack (10).

[0099]

[0100] Hereinafter, the manufacturing process of the battery pack (10) according to one embodiment of the present invention will be examined in more detail.

[0101] FIGS. 4 to 9 are schematic drawings for explaining a manufacturing process of a battery pack according to one embodiment of the present invention.

[0102] Referring to FIG. 4, a worker such as the manufacturer can first place the heat sink (500) and apply the adhesive material (600) onto the heat sink (500) through an injection device (I).

[0103] Referring to FIG. 5, the worker or the like can place the frame body (210) of the cell frame (200) on both sides of the heat sink (500) to which the adhesive member (600) is applied. Here, the adhesive member (600) can be exposed through the opening (215) of the frame body (210).

[0104] Referring to FIG. 6, the worker or the like can place the plurality of battery cells (100) within the frame body (210) at a predetermined distance apart from each other. Here, a detachable assembly guide jig can be used to ensure stable spacing of the plurality of battery cells (100). The lower portions of the plurality of battery cells (100) can be attached and fixed to the adhesive member (600) through the opening (215) of the cell frame (210).

[0105] Referring to Fig. 7, the worker, etc., can inject the first filling member (300) into the cell frame (210) to a predetermined height through the injection device (I). Meanwhile, in the previous step, if the assembly guide jig is used, the injection of the first filling member (300) can be performed after the removal of the assembly guide jig.

[0106] Referring to FIG. 8, the worker, etc., can connect the frame cover (250) of the cell frame (200) to the cell frame (200) and the frame body (210). Then, the worker, etc., can mount the busbar assembly (700) to the frame cover (250) and connect the busbar assembly (700) to the plurality of battery cells (100). Thereafter, if the first filling member (300) is in a liquid state, the worker, etc., can cool it or leave it for a predetermined period of time so that it changes into a solid state.

[0107] Referring to FIG. 9, finally, the worker, etc., after the solid phase change of the first filling member (300) is completed, can inject the second filling member (400) into the cell frame (200) through the injection device (I). Here, the injection height of the second filling member (400) may be from the upper end of the first filling member (300) to the upper end of the guide jaw (253) of the frame cover (250). The second filling member (400) may be continuously filled without interruption up to the injection height within the cell frame (200), and may be filled to completely cover both the upper end of the battery cells (100) and the busbar assembly (700).

[0108]

[0109] FIG. 10 is a schematic drawing for explaining a battery pack according to another embodiment of the present invention, and FIG. 11 is an enlarged view of part A of the battery pack of FIG. 10.

[0110] Since the battery pack (20) according to the present embodiment is similar to the battery pack (10) of the previous embodiment, duplicate descriptions of components that are substantially the same or similar to those of the previous embodiment will be omitted, and the following will focus on differences from the previous embodiment.

[0111] Referring to FIGS. 10 and 11, the battery pack (20) may include the plurality of battery cells (100), a cell frame (207), the first filling member (300), the second filling member (400), the heat sink (500), the adhesive member (600), and the busbar assembly (700).

[0112] Since the above plurality of battery cells (100) are substantially the same or similar to those of the previous embodiment, a duplicate description thereof will be omitted below.

[0113] The above cell frame (207) may include a frame body (220) and a frame cover (250).

[0114] The above frame body (220) may include a filling guide (227).

[0115] The above filling guide (227) may be provided as a protrusion protruding from the inner surface of the frame body (220) by a predetermined length. The height of the filling guide (227) may correspond to the filling height of the first filling member (300).

[0116] In this embodiment, when the first filling member (300) is injected into the cell frame (207) through the filling guide (227), more accurate filling of the first filling member (300) can be guided.

[0117] Since the above frame cover (250) is substantially the same as or similar to the previous embodiment, a duplicate description thereof will be omitted below.

[0118] The first filling member (300), the second filling member (400), the heat sink (500), the adhesive member (600), and the busbar assembly (700) are substantially the same as or similar to those of the previous embodiment, and therefore, a duplicate description thereof will be omitted.

[0119] In this way, according to the battery pack (20) according to the present embodiment, the filling guide (227) can be used to guide the worker, etc. to easily visually check the filling height when injecting the first filling member (300), so that the filling accuracy of the first filling member (300) can be increased with a simple structure.

[0120]

[0121] FIG. 12 is a schematic drawing illustrating a battery pack according to another embodiment of the present invention.

[0122] Since the battery pack (30) according to the present embodiment is similar to the battery packs (10, 20) of the previous embodiment, a duplicate description of components that are substantially the same or similar to those of the previous embodiment will be omitted, and the following description will focus on differences from the previous embodiment. Meanwhile, in Fig. 12, some of the components that overlap with those of the previous embodiment have been omitted for convenience of explanation.

[0123] Referring to FIG. 12, the frame body (230) of the cell frame (208) of the battery pack (30) may include a filling guide (238).

[0124] The above filling guide (238) may be formed on the inner surface of the cell frame (208) and may be provided with a plurality of leveling lines spaced apart by a predetermined distance in the height direction (Z-axis direction) of the cell frame (208). The height of the plurality of leveling lines may each be a height corresponding to a predetermined various filling height of the first filling member (300). The predetermined filling height of the first filling member (300) may vary depending on the cooling performance required for the capacity or number of the battery cells (100).

[0125] According to the present embodiment, even when the filling height of the first filling member (300) varies depending on the required filling amount of the first filling member (300), the filling guide (238) provided with the plurality of leveling lines can guide the worker, etc., to easily visually check the filling amount. Accordingly, the risk of the worker, etc., incorrectly filling the first filling member (300) can be minimized through the filling guide (238).

[0126] The plurality of leveling lines of the filling guide (238) may be formed to have different lengths. In addition to the different lengths, the plurality of leveling lines may also be formed to have different shapes and sizes that facilitate mutual identification. In this way, according to an embodiment of the present invention, since the plurality of leveling lines of the filling guide (238) are more easily identified from each other, the identification accuracy of the leveling line corresponding to the desired filling height can be further increased.

[0127]

[0128] FIG. 13 is a drawing for explaining a vehicle according to one embodiment of the present invention.

[0129] Referring to FIG. 13, a vehicle (1) according to an embodiment of the present invention may include at least one battery pack (10, 20, 30) according to the present invention. In addition to the battery pack (10, 20, 30), the vehicle (1) according to an embodiment of the present invention may further include various other components included in the vehicle. For example, the vehicle (1) according to an embodiment of the present invention may further include a body, a motor, a control device such as an ECU (electronic control unit), etc., in addition to the battery pack (10, 20, 30) according to an embodiment of the present invention.

[0130] In addition, it goes without saying that the battery pack (10, 20, 30) according to one embodiment of the present invention may be installed in other devices, apparatuses, and facilities, such as an energy storage system using a secondary battery, in addition to the automobile (1).

[0131] According to various embodiments as described above, a battery pack (10, 20, 30) capable of improving cooling performance and a vehicle (1) including the same can be provided.

[0132] In addition, according to various embodiments as described above, a battery pack (10, 20, 30) capable of preventing heat transfer and enhancing safety and a vehicle (1) including the same can be provided.

[0133] In addition, according to various embodiments as described above, a battery pack (10, 20, 30) capable of increasing manufacturing efficiency and a vehicle (1) including the same can be provided.

[0134]

[0135] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. In the battery pack, Multiple battery cells; A cell frame accommodating the plurality of battery cells; A first filling member filled between the plurality of battery cells within the cell frame; and A second filling member filled within the cell frame so as to be in contact with the first filling member A battery pack comprising:

2. In paragraph 1, The above second filling member is, A battery pack characterized in that the first filling member is filled to cover the first filling member so as to seal the first filling member within the cell frame.

3. In paragraph 1, The above first filling member is, A portion of the plurality of battery cells is filled to be locked within the cell frame, The above second filling member is, A battery pack characterized in that the remainder of the plurality of battery cells are filled so as to be locked within the cell frame.

4. In paragraph 1, The above cell frame is, a frame body accommodating the plurality of battery cells; and It is combined with the above frame body and includes a frame cover that covers the upper side of the plurality of battery cells, The above first filling member is, A battery pack characterized in that it is filled to a height equal to or lower than the height of the upper part of the frame body.

5. In paragraph 4, The above second filling member is, A battery pack characterized in that it is continuously filled from the frame cover to the portion within the frame body that comes into contact with the first filling member.

6. In paragraph 1, The above first filling member is, A battery pack characterized by including a phase change material.

7. In paragraph 1, The above first filling member is, A battery pack characterized by comprising a paraffin material.

8. In paragraph 1, The above second filling member is, A battery pack characterized in that it is provided with the same material as the first filling member.

9. In paragraph 1, The above second filling member is, A battery pack characterized by being equipped with glass bead resin.

10. In paragraph 1, The above second filling member is, A battery pack characterized by being equipped with silicone foam.

11. In paragraph 4, The above frame cover, A cover body coupled with the above frame body; and A guide jaw extending from the edge of the above cover body to a predetermined height Includes, The above second filling member is, A battery pack characterized in that it is filled up to the end of the above guide jaw.

12. In paragraph 1, The above frame cover, A battery pack characterized by comprising a cell insertion portion formed on the cover body and into which ends of the plurality of battery cells are inserted.

13. In paragraph 1, A heat sink provided on one side of the above cell frame for cooling the plurality of battery cells A battery pack comprising:

14. In paragraph 13, On one side of the cell frame facing the heat sink, A battery pack characterized in that an opening is formed to expose the ends of the plurality of battery cells toward the heat sink.

15. In paragraph 13, An adhesive member provided between the cell frame and the heat sink, and sealing the first filling member together with the second filling member A battery pack comprising:

16. In paragraph 11, A busbar assembly mounted on the cover body at the bottom of the guide jaw and electrically connected to the plurality of battery cells. A battery pack comprising:

17. In paragraph 16, The above second filling member is, A battery pack characterized in that it is filled so as to cover the above busbar assembly.

18. In automobiles, A vehicle characterized by comprising at least one battery pack according to any one of claims 1 to 17.

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