Battery cell assembly and battery pack containing it

Abstract

The technical idea of ​​the present invention provides a battery cell assembly including: a cell block including a plurality of battery cells; a bus bar connected to an electrode lead of the cell block; a bus bar frame on which the bus bar is mounted and having an accommodation space for accommodating a portion of the bus bar; and a thermally conductive filler that at least partially fills the accommodation space of the bus bar frame and is in contact with the bus bar.

Description

【Technical Field】 【0004】 , , , , , , , , 【0005】 , 【0001】 The present invention relates to a battery cell assembly and a battery pack including the battery cell assembly. 【0002】 This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0095852 filed on July 24, 2023, and all the contents disclosed in the literature of the Korean patent application are included as part of this specification. 【Background Art】 【0003】 Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as an energy source for various wireless devices such as handsets, notebook computers, and wireless vacuum cleaners. As secondary batteries are applied to the mobility field such as battery electric vehicles (BEVs), research is being conducted to increase the battery capacity and energy density of secondary batteries, as well as to reduce damage caused by heat generation of secondary batteries and improve the reliability of secondary batteries. 【Summary of the Invention】 【Problems to be Solved by the Invention】<000时016> 【0004】 The technical problem to be achieved by the present invention relates to a battery cell assembly and a battery pack including the battery cell assembly. 【Means for Solving the Problems】 【0005】 To solve the above problems, the technical idea of the present invention provides a battery cell assembly including a cell block including a plurality of battery cells, a bus bar connected to an electrode lead of the cell block, a bus bar frame on which the bus bar is mounted and having an accommodation space for accommodating a part of the bus bar, and a thermally conductive filler that at least partially fills the accommodation space of the bus bar frame and contacts the bus bar. 【0006】 In an exemplary embodiment, the cooling plate is further located on the cell block and in contact with the thermally conductive filler. 【0007】 In an exemplary embodiment, the busbar frame includes a slit on the lower side of the housing space and an opening on the upper side of the housing space, the busbar is inserted into the housing space of the busbar frame through the slit of the busbar frame, and the first portion of the cooling plate is inserted into the housing space of the busbar frame through the opening of the busbar frame. 【0008】 In an exemplary embodiment, at least a portion of the first part of the cooling plate is embedded in the thermally conductive filler. 【0009】 In an exemplary embodiment, the cooling plate is bonded to the upper surface of the cell block, and the busbar frame is bonded to one side of the cell block. 【0010】 In exemplary embodiments, the cell block further includes other busbars connected to other electrode leads, wherein the thermally conductive filler is in contact with the other busbars. 【0011】 In an exemplary embodiment, the thermally conductive filler is characterized by comprising a first material layer containing silicone and a second material layer laminated on the first material layer and containing a thermally conductive resin. 【0012】 In exemplary embodiments, the busbar is characterized by being an interbusbar connecting different electrode leads of the cell block or a terminal busbar electrically connected to an external electrical device. 【0013】 To solve the above-mentioned problems, the technical concept of the present invention provides a battery pack comprising a pack housing and a plurality of battery cell assemblies mounted on the pack housing and arranged in a first direction, wherein each of the plurality of battery cell assemblies comprises a cell block containing a plurality of battery cells, a cooling plate on the cell block, a plurality of busbars connected to different electrode leads of the cell block, a busbar frame including a lower part on which the plurality of busbars are mounted and an upper part having a housing space for accommodating a portion of each of the plurality of busbars and a first portion of the cooling plate, and a thermally conductive filler configured to at least partially fill the housing space of the busbar frame and to contact the plurality of busbars and the cooling plate to thermally bond the plurality of busbars to the cooling plate. 【0014】 In an exemplary embodiment, the busbar frame includes a plurality of slits on the lower side of the housing space and an opening on the upper side of the housing space, wherein the plurality of busbars are each inserted into the housing space of the busbar frame through a corresponding slit among the plurality of slits, and the first portion of the cooling plate is inserted into the housing space of the busbar frame through the opening of the busbar frame. 【0015】 In an exemplary embodiment, the plurality of busbars are arranged in a first direction, and the first portion of the cooling plate extends continuously in the first direction and is in continuous contact with the thermally conductive filler. 【0016】 In an exemplary embodiment, the cooling plate is bonded to the upper surface of the cell block, and the busbar frame is bonded to one side of the cell block. 【0017】 In an exemplary embodiment, the device includes a lower housing for housing the plurality of battery cell assemblies and a top plate coupled to the lower housing so as to cover the plurality of battery cell assemblies, wherein the plurality of battery cell assemblies are suspended and supported from the top plate. 【0018】 In an exemplary embodiment, the plurality of battery cell assemblies are spaced apart from the bottom wall of the lower housing, and a space is formed between each of the plurality of battery cell assemblies and the bottom wall of the lower housing. 【0019】 In an exemplary embodiment, the plurality of battery cell assemblies are characterized by each including a cell block in which pouch-type battery cells are stacked. [Effects of the Invention] 【0020】 According to exemplary embodiments of the present invention, the busbars are thermally bonded to the cooling plates by a thermally conductive filler, thereby improving the cooling efficiency of the busbars. This prevents thermal damage to the busbars and improves the reliability of the battery cell assembly. 【0021】 The effects that can be obtained from exemplary embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly derived and understood by a person of ordinary skill in the art to which the exemplary embodiments of this disclosure belong from the following description. That is, unintended effects associated with carrying out exemplary embodiments of this disclosure can also be derived by a person of ordinary skill in the art from exemplary embodiments of this disclosure. [Brief explanation of the drawing] 【0022】 [Figure 1] This is a perspective view showing a battery cell assembly according to an exemplary embodiment of the present invention. [Figure 2]A side view showing a partial configuration of a battery cell assembly according to an exemplary embodiment of the present invention. [Figure 3] A cross-sectional view showing a partial configuration of a battery cell assembly according to an exemplary embodiment of the present invention. [Figure 4] A plan view showing a partial configuration of a battery cell assembly according to an exemplary embodiment of the present invention. [Figure 5] A cross-sectional view showing a part of a battery cell assembly according to an exemplary embodiment of the present invention. [Figure 6] A cross-sectional view showing a battery pack according to an exemplary embodiment of the present invention. [Figure 7] A schematic view showing an electric vehicle equipped with a battery pack according to an exemplary embodiment of the present invention. 【Mode for Carrying Out the Invention】 【0023】 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before that, terms and words used in this specification and the claims should not be construed as being limited to their ordinary or dictionary meanings, but should be construed as meanings and concepts that conform to the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the terms in order to explain his own invention in the best way. 【0024】 Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent all of the technical ideas of the present invention. Thus, there can be various equivalents and modifications that can replace them at the time of this application. 【0025】 Also, in the description of the present invention, when it is determined that a specific description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. 【0026】 Since embodiments of the present invention are provided to more fully explain the invention to an ordinary person, the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown schematically for the sake of clarity. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes and proportions. 【0027】 (First Embodiment) Figures 1 to 4 are drawings showing a battery cell assembly 100 according to an exemplary embodiment of the present invention, where Figure 1 is a perspective view showing the battery cell assembly 100, Figure 2 is a side view showing a part of the battery cell assembly 100, Figure 3 is a cross-sectional view showing a part of the battery cell assembly 100, and Figure 4 is a plan view showing a part of the battery cell assembly 100. 【0028】 Referring to Figures 1 to 4, the battery cell assembly 100 may include a cell block 110, a case 120 having a cooling plate 121, a bus bar 130, a bus bar frame 140, and a thermally conductive filler 150. 【0029】 A cell block 110 can include a plurality of battery cells 111. Each battery cell 111 is the basic unit of a lithium-ion battery, i.e., a secondary battery. Each battery cell 111 can include an electrode assembly, an electrolyte, and a case. The electrode assembly housed in the case can include a positive electrode, a negative electrode, and a separator membrane interposed between the positive and negative electrodes. Depending on the form of assembly, the electrode assembly can be either a jelly roll type or a stack type. A jelly roll type electrode assembly can include a winding structure of a positive electrode, a negative electrode, and a separator membrane interposed between them. A stack type electrode assembly can include a plurality of sequentially stacked positive electrodes, a plurality of negative electrodes, and a plurality of separator membranes interposed between them. The positive electrode can include a positive electrode current collector and a positive electrode active material. The negative electrode can include a negative electrode current collector and a negative electrode active material. 【0030】 Multiple battery cells 111 can be connected in series and / or in parallel. For example, multiple battery cells 111 can be connected in series with each other. For example, multiple battery cells 111 can also be connected in parallel with each other. For example, when a set of two or more battery cells 111 connected in parallel with each other is defined as a bank, one bank consisting of two or more battery cells 111 connected in parallel with each other and another bank consisting of two or more battery cells 111 connected in parallel with each other can be connected in series. 【0031】 Each battery cell 111 can be a pouch-type battery cell, a cylindrical battery cell, or a prismatic battery cell. The electrode assembly of a pouch-type battery cell is housed in a pouch case containing an aluminum laminate sheet. The electrode assembly of a cylindrical battery cell is housed in a cylindrical metal can. The electrode assembly of a prismatic battery cell is housed in a prismatic metal can. In exemplary embodiments, the battery cell assembly 100 may be a battery module comprising a module case surrounding the top, bottom, left, and right sides of the cell block 110, or a device having a configuration in which part or all of the module case is removed. 【0032】 In an exemplary embodiment, each individual battery cell 111 corresponds to a pouch-type battery cell, and multiple battery cells 111 within a single battery cell assembly 100 can be stacked on top of each other in a first direction (X direction). In an exemplary embodiment, in each individual battery cell assembly 100, multiple battery cells 111 correspond to pouch-type battery cells whose length along the first direction (X direction) is shorter than their length along the second direction (Y direction), and multiple battery cells 111 can be stacked in a first direction (X direction). 【0033】 In exemplary embodiments, an individual battery cell assembly 100 may include a single cell block 110. However, it may also include a plurality of subcell blocks arranged in a second direction (Y direction), each of which may include a plurality of battery cells 111 stacked in a first direction (X direction). For example, an individual battery cell assembly 100 may include two subcell blocks arranged in a second direction (Y direction). 【0034】 When viewed from above, the cell block 110 can have a rectangular shape. In this case, the cell block 110 can have a first side and a second side opposite to each other in the first direction (X direction), a front and a rear surface opposite to each other in the second direction (Y direction), and a top and a bottom surface opposite to each other in the third direction (Z direction). 【0035】 The busbar frame 140 can be positioned on the front and rear of the cell block 110, respectively. Multiple busbars 130 can be mounted on the busbar frame 140 on the front of the cell block 110, and multiple busbars 130 can be mounted on the busbar frame 140 on the rear of the cell block 110. The busbar frame 140 can support the electrode leads 119 of the cell block 110. The electrode leads 119 may include positive and negative leads provided in each of the multiple battery cells (see 111 in Figure 6). The battery cell assembly 100 may include the busbar frame 140 on the front of the cell block 110 and an end plate 171 for covering the busbar frame 140 on the rear of the cell block 110. 【0036】 The busbar frame 140 may include an insulating material. The busbar frame 140 may also include a foaming fire-resistant coating. Here, the foaming fire-resistant coating may include a dry coating layer that foams when exposed to heat. The foaming of the dry coating layer can form an insulating layer (e.g., a carbonized layer) having a volume several tens of times that of the dry coating layer. The insulating layer can delay heat transfer to the protected object (e.g., multiple battery cells 111) for a certain period of time. 【0037】 The busbar 130 can be coupled to the electrode leads 119 of the battery cell 111. For example, the busbar 130 can be coupled to the electrode leads 119 of the battery cell 111 by welding. For example, individual busbars 130 can be interbusbars for electrically connecting different battery cells 111 to each other, by coupling to the electrode leads 119 of different battery cells 111 belonging to the cell block 110. For example, individual busbars 130 can be terminal busbars for electrically connecting the battery cell assembly 100 to other external electrical devices. 【0038】 The case 120 can house the cell block 110. For example, the case 120 can enclose the first side, second side, and top surface of the cell block 110. For example, the case 120 may include side walls to cover the first and second side surfaces of the cell block 110 and a top wall to cover the top surface of the cell block 110. The case 120 can be coupled to the busbar frames 140 located on the front and rear surfaces of the cell block 110. 【0039】 The case 120 may include a cooling plate 121 that constitutes the upper wall of the cell block 110. The cooling plate 121 may be attached to the upper surface of the cell block 110 and may be thermally bonded to the cell block 110. For example, the cooling plate 121 may be attached to the upper surface of the cell block 110 by a layer of thermal interface material (TIM). The cooling plate 121 may have cooling channels 1211 configured for the flow of a cooling fluid. The cooling fluid supplied from outside the battery cell assembly 100 may flow into the cooling channels 1211 through an inlet, flow along the cooling channels 1211, and then flow out to the outside through an outlet of the cooling channels 1211. Cooling of the battery cell assembly 100 can occur while the cooling fluid flows along the cooling channels 1211. For example, the cooling plate 121 may be manufactured by joining two plates, and the cooling channels 1211 may include a defined space between the two plates. 【0040】 On the other hand, the busbar frame 140 may include a lower part 141 on which the busbars 130 are mounted, and an upper part 145 having a housing space 1451 in which a portion of each of the busbars 130 is accommodated. In the busbar frame 140, the upper part 145 of the busbar frame 140 may be closer to the cooling plate 121 than the lower part 141. The upper part 145 and the lower part 141 of the busbar frame 140 may be integrated. 【0041】 A slit 1453 can be provided on the lower side of the housing space 1451 of the busbar frame 140, and an opening 1452 can be provided on the upper side of the housing space 1451 of the busbar frame 140. The housing space 1451 of the busbar frame 140 can communicate with the slit 1453 and the opening 1452. Each slit 1453 of the busbar frame 140 can provide a passage through which one busbar 130 passes. When viewed from above, one slit 1453 can have approximately the same dimensions as one busbar 130. Each busbar 130 is inserted into the corresponding slit 1453, and the upper part of each busbar 130 can be housed within the housing space 1451 of the busbar frame 140. The first portion 1213 of the cooling plate 121 can extend into the housing space 1451 of the busbar frame 140 through the opening 1452 of the busbar frame 140. When viewed from a plane, the busbars 130 can be arranged in a first direction (X direction), and the first portion 1213 of the cooling plate 121 can extend linearly and continuously in the first direction (X direction). A portion of the first portion 1213 of the cooling plate 121 can be embedded in the thermal conductive filler 150. The first portion 1213 of the cooling plate 121 can be in continuous contact with the thermal conductive filler 150 in the first direction (X direction). 【0042】 When viewed in cross-section, the first portion 1213 of the cooling plate 121 can extend inclined from the portion of the cooling plate 121 facing the upper surface of the cell block 110. For example, when viewed in cross-section, the first portion 1213 of the cooling plate 121 can include a portion bent downward from the portion of the cooling plate 121 facing the upper surface of the cell block 110 or from the portion of the cooling plate 121 in contact with the uppermost end of the busbar frame 140. 【0043】 The thermally conductive filler 150 can be provided within the housing space 1451 of the busbar frame 140. The thermally conductive filler 150 can at least partially fill the housing space 1451 of the busbar frame 140. The thermally conductive filler 150 may be thermally conductive and electrically insulatory. For example, the thermally conductive filler 150 may include a thermally conductive resin. The thermally conductive filler 150 may include a single material layer or multiple material layers. The thermally conductive filler 150 may also be called a thermally conductive material layer. 【0044】 The thermally conductive filler 150 can be configured to thermally bond the busbars 130 to the cooling plate 121. The thermally conductive filler 150 can contact the busbars 130 inserted into the housing space 1451 of the busbar frame 140 through the slit 1453 of the busbar frame 140, and can also contact the first portion 1213 of the cooling plate 121 inserted into the housing space 1451 of the busbar frame 140 through the opening 1452 of the busbar frame 140. The thermally conductive filler 150 can provide a heat conduction path for thermally bonding each of the busbars 130 to the cooling plate 121. 【0045】 According to an exemplary embodiment of the present invention, the busbar 130 is thermally bonded to the cooling plate 121 by the thermally conductive filler 150, thereby improving the cooling efficiency of the busbar 130. This prevents thermal damage to the busbar 130 and improves the reliability of the battery cell assembly 100. 【0046】 (Second Embodiment) Figure 5 is a cross-sectional view showing a portion of a battery cell assembly 100A according to an exemplary embodiment of the present invention. Below, the battery cell assembly 100A shown in Figure 5 will be described, focusing on the differences from the battery cell assembly 100 described with reference to Figures 1 to 4. 【0047】 Referring to Figure 5, the thermally conductive filler 150A may include a first material layer 151 and a second material layer 152 laminated on the first material layer 151. The first material layer 151 and the second material layer 152 may contain different materials. In an exemplary embodiment, the first material layer 151 may contain silicone and can function as a sealing layer for sealing the bottom of the housing space 1451 of the busbar frame 140. In an exemplary embodiment, the second material layer 152 may contain a thermally conductive resin and can provide a heat conduction path for thermally bonding each of the busbars 130 to the cooling plate 121. 【0048】 (Third embodiment) Figure 6 is a cross-sectional view showing a battery pack 500 according to an exemplary embodiment of the present invention. Hereafter, any explanations that overlap with those described above will be omitted or simplified. 【0049】 Referring to Figure 6, the battery pack 500 may include a pack housing 510 and a plurality of battery cell assemblies 100 mounted in the pack housing 510. 【0050】 Multiple battery cell assemblies 100 can be mounted within the pack housing 510 so as to be arranged in a first direction (X direction). Figure 6 illustrates a battery pack 500 that includes two battery cell assemblies 100 arranged in a first direction (X direction), but is not limited thereto. For example, the battery pack 500 may also include three or more battery cell assemblies 100 arranged in a first direction (X direction). 【0051】 The pack housing 510 may include a lower housing 511 having a housing space for housing a plurality of battery cell assemblies 100, and a top plate 515 coupled on the lower housing 511 so as to cover the lower housing 511 housing the plurality of battery cell assemblies 100. The housing space of the lower housing 511 can be defined by a bottom wall facing the bottom surface of the cell block 110 of the individual battery cell assemblies 100, and side walls located around the bottom wall. The top plate 515 is a pack lid that covers the plurality of battery cell assemblies 100. When the battery pack 500 is installed in a vehicle, a passenger cabin room may be located above the top plate 515, and the ground on which the vehicle travels may be located below the lower housing 511. 【0052】 In an exemplary embodiment, a plurality of battery cell assemblies 100 can each be fastened and supported to a corresponding support block 5111 of the support blocks 5111 of the lower housing 511. A fastening portion 127 of the case 120 is provided on one side of each battery cell assembly 100, and the fastening portion 127 can be fastened and supported to a corresponding support block 5111 of the support blocks 5111 of the lower housing 511 by fastening members such as bolts BT. 【0053】 In an exemplary embodiment, multiple battery cell assemblies 100 can each be suspended and supported from a top plate 515. Each individual battery cell assembly 100 can be coupled to the underside of the top plate 515. 【0054】 Furthermore, a free volume FV can be provided between the lower surface of each battery cell assembly 100 and the bottom wall of the lower housing 511. This free volume FV can be understood as the space formed by the separation of the bottom wall of the lower housing 511 and the individual battery cell assemblies 100 from each other. 【0055】 The present invention is an inverted support structure in which individual battery cell assemblies 100 are suspended and supported on a top plate 515. A free volume FV is also provided between the bottom of the battery pack 500 (i.e., the bottom wall of the lower housing 511) and the individual battery cell assemblies 100. The free volume FV allows gases and flames generated in thermal runaway conditions to be moved. In other words, the free volume FV becomes a venting passage through which hot gases and flames can be moved. 【0056】 Furthermore, even when foreign objects are scattered under the vehicle and a strong impact occurs during hard ground driving conditions such as unpaved roads, the free volume FV can absorb that impact. Therefore, damage to multiple battery cell assemblies 100 due to such impacts can be prevented. The free volume FV has a space between each of the multiple battery cell assemblies 100 and the lower housing 511, and when the lower housing 511 deforms towards the battery cell assembly 100 due to an impact applied to the underside of the vehicle, the free volume FV can be used as a space that allows the deformation of the lower housing 511 to a certain extent. It is not necessary to install other structures in the free volume FV. Alternatively, structures that partially support the battery cell assemblies 100 can be installed within the free volume FV. When installing structures within the free volume FV, it is necessary to provide a space between the battery cell assembly 100 and the lower housing 511 that is large enough to allow the deformation of the lower housing 511. 【0057】 The height of the free volume FV and the distance between the bottom wall of the lower housing 511 and the battery cell assembly 100 can be set to a sufficient extent to absorb external shocks. The height of the free volume FV can be determined by considering the dimensions and rigidity of the vehicle frame, the dimensions and rigidity of the lower housing 511, the dimensions of the battery pack 500, the amount of gas generated and the exhaust rate during thermal runaway, etc. For example, if the thickness or rigidity of the vehicle frame or the bottom wall of the lower housing 511 is relatively large, at least one of the size and height of the free volume FV can be made relatively smaller. Also, if the thickness or rigidity of the vehicle frame or the bottom wall of the lower housing 511 is relatively small, there is a high possibility of deformation of the bottom wall of the lower housing 511, so at least one of the size and height of the free volume FV can be made relatively larger to protect the battery cell assembly 100. In addition, according to the battery pack 500 standard, if the size of the battery pack 500 is relatively large, a relatively large free volume FV can be ensured. If the size of the battery pack 500 is relatively small, the height of the available free volume FV may be relatively low, and it may be necessary to relatively increase the thickness and rigidity of the bottom wall of the lower housing 511. Also, if the height of the free volume FV is too low, the gas exhaust passage will be small, and the internal pressure of the battery pack 500 may rise rapidly during thermal runaway. Therefore, the size and height of the free volume FV can be determined by taking into account the amount of gas generated and the exhaust rate. 【0058】 The maximum height of the free volume FV can be determined according to the degree of damage to the battery cells 111 contained in the battery cell assembly 100. For example, if the acceptable damage limit for the battery cells 111 is 1 mm, the free volume FV can be determined so that the battery cells 111 do not deform by more than 1 mm when the lower housing 511 deforms and presses against the lower surface of the battery cells 111. In this case, the amount of deformation of the lower housing 511 may vary depending on the thickness and rigidity of the lower housing 511. Therefore, the size and height of the free volume FV can be determined by considering both the acceptable damage limit of the battery cells 111 and the thickness and rigidity of the lower housing 511. 【0059】 The upper surface of each battery cell assembly 100 can be tightly coupled to the lower surface of the top plate 515. If there is a space between the battery cell assembly 100 and the top plate 515, hot gases can be introduced into the space between the battery cell assembly 100 and the top plate 515 during thermal runaway, and heat and flames can be transmitted to other adjacent battery cell assemblies 100. Heat and flames can also be transmitted to the top plate 515, potentially affecting the cabin room above the top plate 515. Therefore, by tightly coupling the upper surface of each battery cell assembly 100 to the lower surface of the top plate 515, gases and flames generated inside the battery pack 500 can be directed to the free volume FV. 【0060】 (Fourth Embodiment) Figure 7 is a schematic diagram showing an electric vehicle 1000 equipped with a battery pack 1100 according to an exemplary embodiment of the present invention. 【0061】 Figure 7 shows, for the sake of simplicity, only the vehicle body frame 1200, which forms the lower frame of the vehicle, the battery pack 1100 connected to the vehicle body frame 1200, and the tires. The battery pack 1100 may include, for example, the battery pack 500 described with reference to Figure 6. 【0062】 In a typical battery pack, the battery cell assembly is installed at the bottom of the battery pack housing. However, in this embodiment, the battery cell assembly 100 of the battery pack 1100 has a structure in which it is suspended and supported by the top plate 1120 of the housing. That is, there is no space between the battery cell assembly 100 and the top plate 1120, which prevents gas generated in the battery cell assembly 100 from being transmitted to the cabin room above the vehicle. The gas is guided to a free volume (see FV in Figure 6) provided on the underside of the battery cell assembly 100 and the housing of the battery pack 1100. The gas can flow through the free volume FV and be discharged to the underside of the vehicle through a gas exhaust port installed in the battery pack 1100. Furthermore, according to this embodiment, since a free volume FV is provided between the battery cell assembly 100 and the housing within the battery pack 1100, damage to the battery cell assembly 100 can be prevented even if the housing deforms. 【0063】 According to embodiments of the present invention, the battery pack 1100 and the electric vehicle 1000 equipped therewith can enhance passenger safety. Furthermore, the battery cell assembly 100, which is a core component, can be protected, improving the durability of the battery pack 1100 and the electric vehicle 1000. 【0064】 The present invention has been described in more detail above with reference to the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein are merely one embodiment of the present invention and do not represent the entire technical concept of the present invention. Therefore, there may be various equivalents and modifications that can be substituted for them at the time of filing.

Claims

[Claim 1] A cell block containing multiple battery cells, A busbar connected to the electrode leads of the cell block, A busbar frame on which the busbar is mounted and which has a housing space for housing a part of the busbar, A thermally conductive filler that at least partially fills the housing space of the busbar frame and is in contact with the busbar, The cooling plate is located on the cell block and is in contact with the thermally conductive filler, The busbar frame includes an opening located above the accommodation space. A battery cell assembly wherein the first portion of the cooling plate is inserted into the housing space of the busbar frame through the opening of the busbar frame and in contact with the thermally conductive filler. [Claim 2] A cell block comprising a plurality of battery cells, A busbar connected to the electrode leads of the cell block, A busbar frame on which the busbar is mounted and which has a housing space for housing a part of the busbar, A thermally conductive filler that at least partially fills the housing space of the busbar frame and is in contact with the busbar, The cooling plate is located on the cell block and is in contact with the thermally conductive filler, The busbar frame includes a slit located below the accommodation space and an opening located above the accommodation space. The busbar is inserted into the housing space of the busbar frame through the slit of the busbar frame, A battery cell assembly in which the first portion of the cooling plate is inserted into the housing space of the busbar frame through the opening of the busbar frame. [Claim 3] The battery cell assembly according to claim 2, wherein at least a portion of the first portion of the cooling plate is embedded in the thermally conductive filler. [Claim 4] The cooling plate is coupled to the upper surface of the cell block, The battery cell assembly according to any one of claims 1 to 3, wherein the busbar frame is coupled to one side of the cell block. [Claim 5] Further includes other busbars connected to other electrode leads of the cell block, The battery cell assembly according to any one of claims 1 to 3, wherein the thermally conductive filler is in contact with the other busbar. [Claim 6] The aforementioned thermally conductive filler is A first material layer containing silicone, A battery cell assembly according to any one of claims 1 to 3, comprising: a second material layer laminated on the first material layer and containing a thermally conductive resin. [Claim 7] The battery cell assembly according to any one of claims 1 to 3, wherein the busbar is an interbusbar connecting different electrode leads of the cell block or a terminal busbar electrically connected to an external electrical device. [Claim 8] Pack housing and The pack housing includes a plurality of battery cell assemblies arranged in a first direction, Each of the aforementioned plurality of battery cell assemblies is: A cell block containing multiple battery cells, The cooling plate on the cell block, A plurality of busbars connected to different electrode leads of the cell block, A busbar frame including a lower part on which the plurality of busbars are mounted, and an upper part having a housing space for housing a portion of each of the plurality of busbars and a first portion of the cooling plate, A battery pack comprising a thermally conductive filler configured to at least partially fill the housing space of the busbar frame and to be in contact with the plurality of busbars and the cooling plate, thereby thermally bonding the plurality of busbars to the cooling plate. [Claim 9] The busbar frame has a plurality of slits on the lower side of the accommodation space and the accommodation space Including the opening on the upper side, Each of the plurality of busbars is inserted into the housing space of the busbar frame through a corresponding slit among the plurality of slits. The battery pack according to claim 8, wherein the first portion of the cooling plate is inserted into the housing space of the busbar frame through the opening of the busbar frame. [Claim 10] The plurality of busbars are arranged in the first direction, The battery pack according to claim 8 or 9, wherein the first portion of the cooling plate extends continuously in the first direction and is in continuous contact with the thermally conductive filler. [Claim 11] The cooling plate is coupled to the upper surface of the cell block, The battery pack according to claim 8 or 9, wherein the busbar frame is coupled to one side of the cell block. [Claim 12] A lower housing that accommodates the plurality of battery cell assemblies, Includes a top plate bonded to the lower housing so as to cover the plurality of battery cell assemblies, The battery pack according to claim 8 or 9, wherein the plurality of battery cell assemblies are suspended and supported from the top plate. [Claim 13] The battery pack according to claim 12, wherein the plurality of battery cell assemblies are separated from the bottom wall of the lower housing, and a space is formed between each of the plurality of battery cell assemblies and the bottom wall of the lower housing. [Claim 14] The battery pack according to claim 8 or 9, wherein each of the plurality of battery cell assemblies includes a cell block in which pouch-type battery cells are stacked.

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