Battery cell holder

Abstract

The present disclosure relates to providing a battery cell holder capable of further reducing resistance of a binder liquid when a battery cell is assembled to a structure of a lower side of a battery. The battery cell holder includes: a cell support in which a plurality of battery cells are fitted and seated; a through hole formed through the single body support and into which the adhesive liquid is introduced; and a guide groove formed on the cell support to extend in a seating direction of the battery cell, in contact with the through hole, and configured to form a channel through which the adhesive liquid can flow along a side surface of the battery cell.

Description

Technical Field

[0001] The present disclosure relates to a battery cell holder. Background Art

[0002] In general, as the demand for portable electronic products such as laptop computers, cameras, mobile phones, etc. rapidly increases and the commercialization of robots, electric vehicles, etc. becomes sufficiently mature, research on battery modules and battery packs that can be repeatedly charged and discharged is actively being conducted.

[0003] The lower part of the battery module or battery pack is selectively provided with structures such as a housing, a retainer, a carrier, etc. Structural conductive and thermal conductive glue, gap filler, etc. (hereinafter referred to as "liquid adhesive") are used in the structure on the lower side of the battery to enhance rigidity and improve cooling function. However, due to the resistance of the adhesive liquid filled in the structure on the lower side of the battery, it is difficult to seat and assemble the battery cell on the structure on the lower side of the battery cell.

[0004] The above information disclosed in the art forming the background art of the present disclosure is only intended to enhance understanding of the background art of the present disclosure and therefore may include information that does not constitute the relevant art. Summary of the invention

[0005] An aspect of an embodiment of the present disclosure is directed to providing a battery cell holder capable of further reducing resistance of an adhesive liquid when a battery cell is assembled to a structure of a lower side of a battery.

[0006] These and other aspects and features of the present disclosure will be described in or will be apparent from the following description of some embodiments of the present disclosure.

[0007] According to one or more embodiments, a battery cell holder includes: a cell support to which a plurality of battery cells are assembled and seated; a through hole formed through the cell support and into which an adhesive liquid is introduced; and a guide groove formed on the cell support to extend in a seating direction of the battery cell, contacting the through hole, and configured to form a channel through which the adhesive liquid can flow along a side surface of the battery cell.

[0008] The cell support may include a first support portion extending along an edge portion of the battery cell and contacting a side surface of the battery cell, and a second support portion formed at a lower portion of the first support portion and contacting a lower portion of the battery cell.

[0009] The first supporting portion may include a partition portion and a column portion, wherein the partition portion is formed in a position where two battery cells face each other and has a fence form capable of partitioning a setting space of a plurality of battery cells, and the column portion is formed in a position where three or more battery cells face each other and has a column form capable of filling a separation space between the battery cells.

[0010] The column portion may include a lower column portion having a shape corresponding to a separation space between the battery cells and an upper column portion formed on an upper portion of the lower column portion and having a shape in which a width becomes narrower toward an upper portion.

[0011] The partition portion may be formed with a first height, the lower pillar portion may have a second height higher than the first height, and the upper pillar portion may have a third height higher than the second height.

[0012] The upper column part may include an inclined surface formed to be inclined in a position facing the battery cell.

[0013] The guide groove may be formed to continuously extend from the lower column portion to the inclined surface.

[0014] The guide groove may include a first guide groove formed in a portion of the column portion facing the first battery cell and a second guide groove formed in a portion of the column portion facing the second battery cell.

[0015] The cell support may further include a third support portion having a height higher than the second support portion and extending along an arrangement direction of the battery cells and contacting side surfaces of the battery cells.

[0016] The battery cells may include a first row and a second row, in which the first battery cells and the second battery cells are arranged in a first direction, the second row is arranged adjacent to the first row, in which the third battery cells and the fourth battery cells are arranged in the first direction, the third battery cells and the fourth battery cells are arranged in a Z-shaped configuration with the first battery cells and the second battery cells, and the third supporting portion may include a first bent portion bent along a side surface of the first battery cell and extending between the first battery cell and the third battery cell, a second bent portion bent along a side surface of the third battery cell and extending between the second battery cell and the third battery cell, and a third bent portion bent along a side surface of the second battery cell and extending between the second battery cell and the fourth battery cell.

[0017] The first bent portion may be bent in the second direction and contact the first supporting portion in the second direction, and the second bent portion may be bent in the third direction and contact the first supporting portion in the third direction.

[0018] The third supporting portion may include an extending wall portion extending in an arrangement direction of the battery cells, and an extending column portion extending upward from the first supporting portion and connected to a side surface of the extending wall portion.

[0019] The battery cell holder may further include a flow groove formed to be recessed in a lower portion of the cell support, contacting the plurality of through holes, and configured to form a channel through which the adhesive liquid can flow from one of the through holes to another of the through holes.

[0020] The cell support may include a partition portion and a column portion, the partition portion having the form of a fence capable of partitioning the setting space of the battery cells, the column portion having the form of a column capable of filling the separation space between the battery cells and a guide groove formed in the column portion, and a flow groove may be formed in the lower portion of the column portion to communicate with the guide groove.

[0021] The flow groove may include a recessed portion and an opening portion, the recessed portion being formed to be recessed upward in the lower portion of the column portion, and the opening portion being formed to be open in a lateral direction in a side portion of the recessed portion and in contact with the through hole and the guide groove.

[0022] The opening portion may include a first opening portion and a second opening portion, the first opening portion being formed to open in the first portion of the recessed portion and contact one of the plurality of guide grooves, and the second opening portion being formed to open in the second portion of the recessed portion and contact another of the plurality of guide grooves.

[0023] The battery cell holder may further include a seating protrusion formed to protrude upward on the cell supporter and configured to form a separation space between a lower portion of the battery cell and the cell supporter to allow introduction of the adhesive liquid.

[0024] The cell support may include a first support portion contacting a side surface of the battery cell and a second support portion contacting a lower portion of the battery cell, and the seating protrusion may be formed on an upper surface portion of the second support portion.

[0025] The seating protrusion may include a protrusion body, a first connecting portion, and a second connecting portion, the protrusion body having a set thickness allowing the lower portion of the battery cell to be spaced apart from the second supporting portion and a set width allowing the battery cell to be supported, the first connecting portion being formed in the lower portion of the protrusion body and connected to the second supporting portion, and the second connecting portion being formed in the side portion of the protrusion body and connected to the first supporting portion.

[0026] The second supporting portion may include a rigid reinforcement portion and an adhesive reinforcement portion, the rigid reinforcement portion having a seating protrusion formed on an upper portion thereof, the adhesive reinforcement portion being formed on one or both sides of the rigid reinforcement portion, being spaced apart from a lower portion of the battery cell, and allowing adhesive liquid to be introduced into a space between the adhesive reinforcement portion and the battery cell, and a separation space between the adhesive reinforcement portion and the battery cell may be in contact with the through hole.

[0027] According to one or more embodiments of the present disclosure, since the guide groove forms a channel for the adhesive liquid that can flow along the side surface of the battery cell, the adhesive liquid can flow upward or downward along the side surface of the battery cell while being guided by the guide groove, depending on the pressing force applied when the battery cell is assembled and seated in the cell support.

[0028] According to one or more embodiments of the present disclosure, the adhesive liquid that contacts the side surface of the battery cell during the insertion of the battery cell into the lower portion of the battery cell holder can be dispersed and flow upward and downward while being guided by the guide groove. Thereafter, the adhesive liquid that contacts the lower portion of the battery cell during the further downward movement of the battery cell to be seated in the battery cell holder can be pushed to the edge portion of the battery cell and then move upward while being guided by the guide groove.

[0029] According to one or more embodiments of the present disclosure, resistance caused by adhesive liquid during assembly of inserting and seating a battery cell in a battery cell holder may be reduced, and assembly of the battery cell may be performed more easily.

[0030] According to one or more embodiments of the present disclosure, after the assembly of the battery cell seat in the battery cell holder is completed, the adhesive liquid can naturally flow downward by the adhesive liquid's own weight while being guided by the guide groove, and at the same time, the air mixed in the adhesive liquid can be discharged through the guide groove.

[0031] According to one or more embodiments of the present disclosure, the amount of air mixed in the adhesive liquid may be reduced, thereby minimizing the occurrence of a separation space between a battery cell holder, a battery cell, and a cooling tray due to the introduction of air.

[0032] According to one or more embodiments of the present disclosure, the adhesive liquid may be densely and tightly filled in the separation spaces between the battery cell holder, the battery cells, and the cooling tray, so that when the adhesive liquid is cured, the rigidity of the battery module or battery pack may be further enhanced.

[0033] According to one or more embodiments of the present disclosure, when a thermally conductive material is applied to the adhesive liquid, the cooling function by the cooling tray may be further improved.

[0034] According to one or more embodiments of the present disclosure, not only the lower portion of the battery cell can be in contact with the adhesive liquid filled in the lower portion of the battery cell holder, but also the side surface of the battery cell can be in contact with the adhesive liquid filled in the guide groove. Therefore, when the adhesive liquid is solidified, the bonding force between the battery cell holder and the battery cell can be further enhanced.

[0035] According to one or more embodiments of the present disclosure, since the flow groove connects the plurality of through holes to communicate with each other, the adhesive liquid can freely flow through the spaces between the through holes through the flow groove according to the pressing force applied when the battery cell is assembled and seated on the cell support. Therefore, during the assembly of inserting and seating the battery cell in the battery cell holder, the resistance caused by the adhesive can be reduced, and the assembly of the battery cell can be performed more easily.

[0036] According to one or more embodiments of the present disclosure, since the seating protrusion forms a separation gap that allows adhesive liquid to be introduced between the lower portion of the battery cell and the battery cell retainer, the bonding between the lower portion of the battery cell retainer and the battery cell can be made clearer and stronger by introducing the adhesive liquid into the space between the lower portion of the battery cell and the cell support.

[0037] However, the effects obtainable by the present disclosure are not limited to the above-mentioned effects, and other technical effects not mentioned will be clearly understood by those skilled in the art from the following description of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings attached to this specification illustrate some embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. However, the present disclosure should not be interpreted as being limited to the accompanying drawings:

[0039] Figure 1 is a perspective view schematically showing main components of one embodiment of a battery module according to one embodiment of the present disclosure;

[0040] Figure 2 yes Figure 1 Floor plan of

[0041] Figure 3 yes Figure 1 An exploded perspective view of the main components of

[0042] Figure 4 is a perspective view schematically showing main components of a battery cell holder according to one embodiment of the present disclosure;

[0043] Figure 5 is with Figure 4Perspective views schematically showing main components of a battery cell holder according to one embodiment of the present disclosure in different directions;

[0044] Figure 6 is with Figure 4 and Figure 5 Perspective views schematically showing main components of a battery cell holder according to one embodiment of the present disclosure in different directions;

[0045] Figure 7 yes Figure 4 Floor plan of

[0046] Figure 8 yes Figure 4 Front view of

[0047] Fig. 9 yes Figure 4 Side view of

[0048] Fig.10 yes Figure 4 Bottom view of

[0049] Fig.11 yes Figure 4 An enlarged view of part A in FIG.

[0050] Fig.12 yes Figure 6 an enlarged view of section B of FIG; and

[0051] Fig.13 yes Figure 7 Magnified view of part C. DETAILED DESCRIPTION

[0052] Herein, some embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The terms or words used in this specification and claims should not be interpreted as limited to the usual or dictionary meanings, and should be interpreted as meanings and concepts consistent with the technical idea of ​​the present disclosure based on the principle that the inventor can be his / her own lexicon compiler to appropriately define the concept of the term.

[0053] The embodiments described in this specification and the configurations shown in the accompanying drawings are provided as some example embodiments of the present disclosure and do not represent all technical ideas, aspects and features of the present disclosure. Therefore, it should be understood that when submitting this application, there may be various equivalents and modifications that can replace or modify the embodiments described herein.

[0054] It should be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, directly connected to, or coupled to the other element or layer, or one or more intermediate elements or layers may also be present. When an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intermediate elements or layers. For example, when a first element is described as being "coupled to" or "coupled to" a second element, the first element may be directly coupled to or coupled to the second element, or the first element may be indirectly coupled to or coupled to the second element via one or more intermediate elements.

[0055] In the accompanying drawings, for clarity, the sizes of various elements, layers, etc. may be exaggerated. The same reference numerals represent the same or similar elements. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items. In addition, when describing the embodiments of the present disclosure, the use of "may" relates to "one or more embodiments of the present disclosure". Statements such as "at least one of ... " and "any one of ... " modify the entire element list when following the element list, without modifying the individual elements in the list. When phrases such as "at least one of A, B and C", "at least one of A, B or C", "at least one of the group selected from A, B and C" or "at least one of A, B and C" are used to specify the list of elements A, B and C, the phrase may refer to any and all suitable combinations or subsets of A, B and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the terms "use", "use ... " and "being used" may be considered to be synonymous with the terms "utilize", "utilize ... " and "being utilized" respectively. As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation rather than terms of degree, and are intended to take into account the inherent variations in measurements or calculations that one of ordinary skill in the art would recognize.

[0056] It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or part discussed below may be referred to as a second element, component, region, layer or part.

[0057] For ease of description, spatial relative terms such as "below", "below", "lower", "above", "upper", etc. may be used herein to describe the relationship between one element or feature and another one or more elements or features as shown in the figure. It should be understood that in addition to the orientation shown in the figure, the spatial relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is turned over, the elements described as "below" or "below" other elements or features will be oriented as "above" or "on" other elements or features. Therefore, the term "below" can cover both the above and below orientations. The device can be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein should be interpreted accordingly.

[0058] The terms used herein are for the purpose of describing the embodiments of the present disclosure, and are not intended to limit the present disclosure. As used herein, the singular forms "one" and "an" are intended to also include plural forms, unless the context clearly states otherwise. It should also be understood that when used in this specification, the terms "include", "includes ... ", "includes" and / or "includes ... " specify the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or their groups.

[0059] In addition, any numerical range disclosed and / or listed herein is intended to include all sub-ranges of the same numerical precision contained in the listed range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the minimum value 1.0 and the maximum value 10.0 (and including the endpoints), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit described herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit described in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly describe any sub-ranges contained in the range explicitly described herein.

[0060] Referring to two compared elements, features, etc. as "the same" may mean that they are "substantially the same." Thus, the phrase "substantially the same" may include situations with deviations that are considered low in the art, such as 5% or less. Additionally, when a parameter is referred to as being uniform in a given area, it may mean that it is uniform in terms of average value.

[0061] Throughout the specification, unless otherwise specified, each element may be in the singular or in the plural.

[0062] When any element is referred to as being arranged (or located or positioned) "on (or below)" or "over (or under)" a component, it may mean that the arbitrary element is placed in contact with the upper (or lower) surface of the component, and may also mean that another component may be interposed between the component and any arbitrary element arranged (or located or positioned) on (or under) the component.

[0063] In addition, it should be understood that when an element is referred to as being “coupled,” “linked,” or “connected” to another element, the elements may be directly “coupled,” “linked,” or “connected” to each other, or one or more intermediate elements may be present between them, through which the element may be “coupled,” “linked,” or “connected” to another element. In addition, when a component is referred to as being “electrically coupled” to another component, the component may be directly electrically connected to the other component, or one or more intermediate components may be present therebetween, so that the component and the other component are indirectly electrically connected to each other.

[0064] Throughout the specification, unless otherwise specified, when "A and / or B" is stated, it means A, B, or A and B. That is, "and / or" includes any or all combinations of the listed multiple items. When "C to D" is stated, unless otherwise specified, it means C or greater and D or less.

[0065] The terms used in this specification are used to describe the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0066] Figure 1 is a perspective view schematically showing main components of one embodiment of a battery module according to one embodiment of the present disclosure, Figure 2 yes Figure 1 Floor plan, Figure 3 yes Figure 1 Exploded perspective view of the main components.

[0067] In the drawings of the present disclosure, directions X, Y, and Z are indicated. In the description of the present disclosure, for convenience, the X direction is set as a rearward direction or a front-to-rear direction, the Y direction is set as a rightward direction or a left-right direction, and the Z direction is set as an upward direction or an up-down direction to describe the structure and arrangement relationship of the components of the present disclosure.

[0068] Reference Figures 1 to 3 A battery module (reference numerals not shown) according to one embodiment of the present disclosure may include a battery cell holder 1 , a battery cell 2 , an adhesive liquid 3 , and a cooling tray 4 .

[0069] The battery cell holder 1 may have a tray shape capable of supporting a plurality of battery cells 2 from the lower side of the battery cells. The plurality of battery cells 2 may be seated in designated positions on the battery cell holder 1. The plurality of battery cells 2 may be arranged in a set configuration with set intervals when seated in the battery cell holder 1.

[0070] The plurality of battery cells 2 may include a first battery cell 2A, a second battery cell 2B, a third battery cell 2C, a fourth battery cell 2D, etc. The plurality of battery cells 2 including the first battery cell 2A, the second battery cell 2B, the third battery cell 2C, and the fourth battery cell 2D may stand upright in the up-down direction (Z direction). In the description of the present disclosure, the first battery cell 2A, the second battery cell 2B, the third battery cell 2C, and the fourth battery cell 2D are intended to refer to a plurality of battery cells 2 that are different from each other, and are not intended to refer to a specific position, form, or function of the battery cell 2.

[0071] Reference Figure 2 , the first battery cell 2A and the second battery cell 2B may be arranged in the front-to-back direction (X direction) to form a first row R1. The third battery cell 2C and the fourth battery cell 2D may be arranged in the front-to-back direction to form a second row R2. The second row R2 may be disposed adjacent to the right side (Y direction) of the first row R1. The third battery cell 2C and the fourth battery cell 2D may be disposed in a zigzag configuration with the first battery cell 2A and the second battery cell 2B.

[0072] A plurality of battery cells 2 may be connected to each other while being seated in a battery cell holder 1 having a tray shape corresponding to one battery module. The battery cell holder 1 may be seated on an upper portion of a cooling tray 4 or in a cooling tray 4. The cooling tray 4 may be made of a thermally conductive material. When the battery cell holder 1 is seated in the cooling tray 4, an adhesive liquid 3 may be introduced into the battery cell holder 1 side.

[0073] Reference Figure 3 , the battery cell holder 1 may include a cell support 10 configured to support a plurality of battery cells 2 and a through hole 20 formed through the cell support 10 in the up-down direction (Z direction). A portion 3A of the adhesive liquid 3 may be received between a bottom surface portion of the cell support 10 of the battery cell holder 1 and the cooling tray 4. Another portion 3B of the adhesive liquid 3 may be received in the through hole 20 of the battery cell holder 1, and may be received in the cell support 10 from an upper side of the through hole 20 of the battery cell holder 1.

[0074] A plurality of battery cells 2 move from the upper side to the lower side and may be seated on the upper surface portion of the cell support 10. When the battery cells 2 are seated on the cell support 10, some of the adhesive liquid 3 may be pressed against the bottom surface of the battery cells 2, flow toward the side surface of the battery cells 2, and flow upward along the side surface of the battery cells 2.

[0075] When the adhesive liquid 3 is introduced to the battery cell holder 1 side, air may have been introduced between the adhesive liquid 3, the cell support 10, and the cooling tray 4. By sequentially seating the battery cells 2 in the battery cell holder 1, downward pressing force is uniformly applied to the adhesive liquid 3 at multiple locations, and the air mixed in the adhesive liquid 3 is discharged to the outside of the adhesive liquid 3. In addition, when the adhesive liquid 3 that has flowed upward along the side of the battery cell 2 naturally flows downward due to the self-weight of the adhesive liquid 3, the air mixed in the adhesive liquid 3 is discharged to the outside of the adhesive liquid 3.

[0076] Such operation can minimize the occurrence of separation spaces between the battery cell holder 1, the battery cell 2, and the cooling tray 4 due to the introduction of air, and enable the adhesive liquid 3 to be densely and tightly filled in the separation spaces between the battery cell holder 1, the battery cell 2, and the cooling tray 4. The adhesive liquid 3 can be made of a flowable material and can solidify after flowing as described above. As described above, the adhesive liquid 3 can be used to firmly connect the lower portions of the plurality of battery cells 2, the battery cell holder 1, and the cooling tray 4 to each other.

[0077] Figure 4 is a perspective view schematically showing main components of a battery cell holder according to one embodiment of the present disclosure, Figure 5 is schematically shown in Figure 4 perspective views of main components of a battery cell holder according to one embodiment of the present disclosure in different directions, Figure 6 is schematically shown in Figure 4 and Figure 5 perspective views of main components of a battery cell holder according to one embodiment of the present disclosure in different directions, and Figure 7 yes Figure 4 Floor plan.

[0078] Reference Figures 4 to 7 The battery cell holder 1 according to one embodiment of the present disclosure includes a cell support 10 , a through hole 20 , and a guide groove 30 . The battery cell holder 1 according to one embodiment of the present disclosure may further include a flow groove 40 and a seating protrusion 50 .

[0079] The cell support 10 has a shape that allows the plurality of battery cells 2 to be assembled and seated. The cell support 10 may have the form of a plate-like tray as a whole. The plurality of battery cells 2 may be seated in designated positions on the cell support 10 .

[0080] A through hole 20 is formed through the cell support 10. The through hole 20 is formed at a position corresponding to the lower portion of each of the plurality of battery cells 2. The adhesive liquid 3 may be introduced and received in the through hole 20. The adhesive liquid 3 on the lower side of the cell support 10 may flow to the upper side of the cell support 10 through the through hole 20, and the adhesive liquid 3 on the upper side of the cell support 10 may flow to the lower side of the cell support 10.

[0081] The width of the through hole 20 may correspond to or may be smaller than the width of the lower portion of the battery cell 2. As the width of the through hole 20 increases, the amount of adhesive liquid 3 received in the through hole 20 may increase, and the facing area between the battery cell 2 and the cooling tray 4 may expand.

[0082] The guide groove 30 is formed to extend on the cell support 10 in the seating direction (Z direction) of the battery cell 2. The battery cell 2 can be moved from the upper side to the lower side (-Z direction) and seated on the cell support 10, and the guide groove 30 can be formed to extend in the up-down direction (Z direction) on the cell support 10. A portion of the guide groove 30 contacts the edge portion of the through hole 20. The lower portion of the guide groove 30 can contact the edge portion of the through hole 20.

[0083] The guide groove 30 forms a channel through which the adhesive liquid 3 can flow along the side surface of the battery cell 2. When the battery cell 2 is assembled and seated in the cell support 10, the adhesive liquid 3 located on the upper side of the through hole 20 is pressed against the battery cell 2 and pushed and moved toward the side surface of the battery cell 2, and can flow upward along the side surface of the battery cell 2 while being guided by the guide groove 30.

[0084] By the process of introducing the adhesive liquid 3 into the cell support 10, or by the process of assembling the battery cell 2 to the cell support 10, some of the adhesive liquid 3 may be positioned on the upper side of the cell support 10. The adhesive liquid 3 located on the upper side of the cell support 10 may naturally flow downward toward the through hole 20 by the own weight of the adhesive liquid 3 while being guided by the guide groove 30. As described above, in the process of assembling the battery module, the adhesive liquid 3 may smoothly flow upward or downward while being guided by the guide groove 30, and may eventually be stabilized in a state of flowing downward toward the through hole 20 as much as possible by the own weight of the adhesive liquid 3.

[0085] The flow groove 40 may be formed to be recessed in the lower portion of the monolithic support 10, and may contact the plurality of through holes 20. A plurality of through holes 20 may be formed in the monolithic support 10, and the flow groove 40 may be formed to be recessed upward in the lower portion of the monolithic support 10. One end of the flow groove 40 may contact an edge portion of one through hole 20, and the other end of the flow groove 40 may contact an edge portion of another through hole 20.

[0086] A plurality of through holes 20 may be connected to communicate with each other through flow grooves 40. The flow grooves 40 may form a channel through which the adhesive liquid 3 may flow from one through hole 20 to another through hole 20. By increasing the number of flow grooves 40, more through holes 20 may be connected to communicate with each other, and the adhesive liquid 3 may flow between more through holes 20. In addition, by increasing the number of flow grooves 40 formed between pairs of through holes 20, the adhesive liquid 3 may flow more smoothly between the through holes 20 in proportion to the increased number of flow grooves 40.

[0087] The seating protrusion 50 may be formed to protrude upward on a portion of the cell support 10 facing the lower portion of the battery cell 2 (corresponding to the second support portion 12 to be described below). The battery cell 2 may be spaced apart upward from the second support portion 12 while being seated on the seating protrusion 50 .

[0088] A separation space into which the adhesive liquid 3 may be introduced may be formed between the lower portion of the battery cell 2 and the second supporting portion 12 by the seating protrusion 50 . The adhesive liquid 3 may be introduced between the lower portion of the battery cell 2 and the second supporting portion 12 .

[0089] Therefore, compared with the embodiment in which the seating protrusion 50 is not formed, a separation space corresponding to the area of ​​the upper surface portion of the second support portion 12 other than the area of ​​the seating protrusion 50 can be additionally formed. By introducing the adhesive liquid 3 between the second support portion 12 and the battery cell 2, the coupling between the second support portion 12 and the lower portion of the battery cell 2 can be made clearer and stronger.

[0090] Reference Figures 4 to 7 The single body support member 10 according to one embodiment of the present disclosure may include a first support portion 11 , a second support portion 12 , and a third support portion 13 .

[0091] The first and second support portions 11 and 12 may extend along edge portions of the battery cell 2. The battery cell 2 may have a circumferential shape, and the first support portion 11 may be formed to extend in a circular or polygonal form corresponding to an edge portion of a lower portion of the battery cell 2.

[0092] The plurality of battery cells 2 may be arranged in a plurality of rows and columns. The first support portion 11 and the second support portion 12 may have a shape capable of supporting edge portions of the plurality of battery cells 2 arranged in a plurality of rows and columns. The first support portion 11 and the second support portion 12 may have a form in which a plurality of parts are continuously connected in a plurality of rows and columns.

[0093] The first support portion 11 may be in contact with the side surface of the battery cell 2. The first support portion 11 may extend in a continuous circular or polygonal shape along the side surface of the battery cell 2. The second support portion 12 may be formed to protrude toward the through hole 20 in the lower portion of the first support portion 11 and may be in contact with the lower portion of the battery cell 2. A plurality of second support portions 12 may be spaced apart at set intervals along the edge portion of the battery cell 2.

[0094] The third support portion 13 may be formed to extend along the arrangement direction of the battery cells 2, and its height is higher than the second support portion 12. The third support portion 13 may be in contact with the side surface of the battery cells 2 over a larger area than the second support portion 12, and its height is higher than the second support portion 12. When the battery cells 2 have an arrangement of two or more rows, by forming the third support portion 13 to extend in the arrangement direction of the battery cells 2, the inclination or flow of the battery cells 2 may be more reliably restrained.

[0095] Figure 8 yes Figure 4 Front view of Fig. 9 yes Figure 4 A side view of Fig.10 yes Figure 4 Bottom view of . Fig.11 yes Figure 4 The enlarged view of part A in Fig.12 yes Figure 6 An enlarged view of part B in FIG. Fig.13 yes Figure 7 Magnified view of part C.

[0096] Reference Figures 11 to 13 , the first support portion 11 according to one embodiment of the present disclosure may include a partition portion 111 and a column portion 112 .

[0097] The partition part 111 may have a fence form that can partition the arrangement space of the plurality of battery cells 2. The partition part 111 has a fence form, and the fence may have various shapes depending on the form of the battery cell 2. When the battery cell 2 has a circumferential shape, the partition part 111 may have a curved surface corresponding to the side surface of the battery cell 2.

[0098] The plurality of battery cells 2 may include a fifth battery cell 2E, a sixth battery cell 2F, a seventh battery cell 2G, etc. The plurality of battery cells 2 including the fifth battery cell 2E, the sixth battery cell 2F, and the seventh battery cell 2G may stand upright in the up-down direction (Z direction). In the description of the present disclosure, the fifth battery cell 2E, the sixth battery cell 2F, and the seventh battery cell 2G are intended to refer to a plurality of battery cells 2 that are different from each other, and are not intended to refer to a specific position, form, or function of the battery cell 2.

[0099] The partition part 111 may be formed in a position where two battery cells 2 face each other. Fig.13 , the partition portion 111 may be positioned between the fifth battery cell 2E and the sixth battery cell 2F to partition the installation space of the fifth battery cell 2E and the sixth battery cell 2F. Another partition portion 111 may be positioned between the sixth battery cell 2F and the seventh battery cell 2G to partition the installation space of the sixth battery cell 2F and the seventh battery cell 2G. Yet another partition portion 111 may be positioned between the fifth battery cell 2E and the seventh battery cell 2G to partition the installation space of the fifth battery cell 2E and the seventh battery cell 2G.

[0100] The column portion 112 may be formed in the form of a column higher than the partition portion 111 between the partition portions 111. The column portion 112 may be formed in a position where three or more battery cells 2 face each other. The column portion 112 may have a width and shape corresponding to a separation space formed between the three or more battery cells 2. The column portion 112 may have a greater width and thickness than the partition portion 111. The cell support 10 may ensure rigidity through the column portion 112 to restrict the flow of the battery cell 2.

[0101] There may be one or more column portions 112 for one battery cell 2. A plurality of column portions 112 may be provided for one battery cell 2, and the plurality of column portions 112 may be arranged at set intervals along the circumference of the battery cell 2. One battery cell 2 may be arranged at a position spatially separated from another adjacent battery cell 2 by a plurality of partition portions 111. In addition, by being supported in multiple directions from the side surface by the column portion 112, the flow of the battery cell 2 may be stably restricted.

[0102] Reference Fig.13, one battery cell 2 may be disposed adjacent to six other battery cells 2. Six column portions 112 may be disposed along the circumference of one battery cell 2. Multiple column portions 112 may be integrally connected to six partition portions 111 while being alternately disposed with the partition portions 111. Multiple column portions 112 may be disposed in each of the XY direction, the Y direction, the -XY direction, the -XY direction, the -Y direction, and the XY direction with respect to one battery cell 2, and may have the same arrangement intervals as each other.

[0103] Reference Figure 8 , Fig. 9 and Fig.11 , the column portion 112 according to one embodiment of the present disclosure may include a lower column portion 113 and an upper column portion 114 .

[0104] The lower pillar portion 113 may have a shape and a width corresponding to the separation space between the battery cells 2. The lower pillar portion 113 may be continuously connected to the partition portion 111. The upper pillar portion 114 may be formed to protrude upward from an upper portion of the lower pillar portion 113.

[0105] When the partition part 111 is formed with a first height H1, the lower pillar part 113 may be formed with a second height H2 higher than the first height H1. The upper pillar part 114 may have a third height H3 higher than the second height H2. The plurality of partition parts 111 and the lower pillar part 113 are alternately disposed with each other and may form a shape of a side surface corresponding to a side surface of the battery cell 2. The side surface of one battery cell 2 may be supported by the plurality of partition parts 111 and the plurality of lower pillar parts 113 having a height higher than the partition parts.

[0106] The upper column portion 114 may have a shape in which the width becomes narrower toward the upper portion thereof. Therefore, in the process of inserting the battery cell 2 into the battery cell holder 1, the battery cell 2 may smoothly enter the set space (position) formed by the partition portion 111 and the lower column portion 113 along the side surface of the upper column portion 114 without being stuck on the upper surface portion of the column portion 112. In addition, the adhesive liquid 3 that has flowed to the upper side of the upper column portion 114 may naturally flow downward toward the through hole 20 along the surface of the upper column portion 114 by the weight of the adhesive liquid 3 itself.

[0107] The upper column portion 114 may include an inclined surface 115 formed to be inclined at a position facing the battery cell 2. When one column portion 112 is provided to face three battery cells 2, the inclined surface 115 may be formed in a position facing each of the three battery cells 2. When one column portion 112 is provided to face three battery cells 2, three inclined surfaces 115 may be formed, and the three inclined surfaces 115 may have a relative angle corresponding to 120°.

[0108] Reference Fig.13 , the column portion 112 can be positioned between the fifth battery cell 2E, the sixth battery cell 2F, and the seventh battery cell 2G, and the three inclined surfaces 115 can be formed to face each of the fifth battery cell 2E, the sixth battery cell 2F, and the seventh battery cell 2G. The battery cell 2 can be naturally guided to the position of the fifth battery cell 2E along one of the three inclined surfaces 115 and inserted and seated. The battery cell 2 can be naturally guided to the position of the sixth battery cell 2F along another of the three inclined surfaces 115 and inserted and seated. The battery cell 2 can be naturally guided to the position of the seventh battery cell 2G along another of the three inclined surfaces 115 and inserted and seated.

[0109] The guide groove 30 may be formed to extend continuously from the lower end of the lower column portion 113 to the inclined surface 115. The adhesive liquid 3 that has flowed to the upper side of the upper column portion 114 may flow downward along the surface of the upper column portion 114, or may flow downward along the inclined surface 115, and may be naturally introduced into the guide groove 30 through the open upper portion of the guide groove 30. The adhesive liquid 3 introduced into the guide groove 30 may naturally flow downward while being guided toward the through hole 20 by the guide groove 30. Such an operation may increase the filling density of the adhesive liquid 3 filled between the battery cell holder 1, the lower portion of the battery cell 2, and the cooling tray 4.

[0110] The seating protrusion 50 may be formed to protrude upward from the upper portion of the second support portion 12. The second support portion 12 may include a portion in which the seating protrusion 50 is formed and a portion in which the seating protrusion 50 is not formed. The second support portion 12 may be formed with a set thickness on the lower portion of the first support portion 11, and at least a portion thereof may be formed to protrude toward the through hole 20. Figure 8 and Fig. 9 , the second supporting portion 12 may have a first thickness G1.

[0111] Reference Fig.11 , the second support portion 12 according to one embodiment of the present disclosure may include a rigidity reinforcement portion 121 in which the seating protrusion 50 is formed and an adhesive reinforcement portion 122 in which the seating protrusion 50 is not formed.

[0112] The seating protrusion 50 may be formed to protrude upward from the upper portion of the rigid reinforcement portion 121. The seating protrusion 50 may have a second thickness G2. The rigid reinforcement portion 121 may rigidly reinforce the second thickness G2 through the seating protrusion 50. The seating protrusion 50 may be positioned at a middle portion of the extension direction of the second support portion 12. The rigid reinforcement portion 121 may achieve as much rigidity as the sum of the first thickness G1 and the second thickness G2 together with the seating protrusion 50.

[0113] The adhesive reinforcing portion 122 may be formed on one side or both sides of the rigid reinforcing portion 121. When the rigid reinforcing portion 121 is formed in the middle portion of the second supporting portion 12, the adhesive reinforcing portion 122 may be formed on both sides of the rigid reinforcing portion 121. When the rigid reinforcing portion 121 is formed to be biased on one side of the second supporting portion 12, the adhesive reinforcing portion 122 may be formed to be biased on the other side thereof.

[0114] Since the battery cell 2 is seated on the seating protrusion 50, the adhesive reinforcing portion 122 may be spaced apart from the lower portion of the battery cell 2. The seating protrusion 50 may have a second thickness G2, and a separation gap corresponding to the second thickness G2 may be formed between the battery cell 2 and the adhesive reinforcing portion 122. The adhesive liquid 3 may be introduced into the separation gap corresponding to the second thickness G2. The separation space between the adhesive reinforcing portion 122 and the battery cell 2 may contact the through hole 20. The adhesive reinforcing portion 122 may be connected to communicate with an edge portion of an upper portion of the through hole 20.

[0115] Compared to the embodiment in which the seating protrusion 50 is not formed, by forming the seating protrusion 50, the contact area between the battery cell 2, the second supporting portion 12 and the adhesive liquid 3 can be further expanded to the area corresponding to the upper surface of the adhesive reinforcing portion 122. Therefore, the bonding force between the battery cell holder 1 and the battery cell 2 through the adhesive liquid 3 can be further enhanced.

[0116] Reference Figure 2 , Figure 7 and Figure 8 , the third supporting portion 13 according to one embodiment of the present disclosure may include an extending wall portion 131 and an extending column portion 136 .

[0117] The extension wall portion 131 may extend along the arrangement direction of the battery cells 2. The extension wall portion 131 may have a height higher than the column portion 112. The extension wall portion 131 may include a first curved portion 132, a second curved portion 133, a third curved portion 134, and a fourth curved portion 135. The extension wall portion 131 may be formed by continuously connecting the first curved portion 132, the second curved portion 133, the third curved portion 134, and the fourth curved portion 135.

[0118] The first curved portion 132 and the second curved portion 133 may be bent in different directions. The third curved portion 134 and the fourth curved portion 135 may be bent in different directions. The first curved portion 132 and the third curved portion 134 may be bent in the same direction as each other. The second curved portion 133 and the fourth curved portion 135 may be bent in the same direction.

[0119] Reference Figure 2 , the first battery cell 2A and the second battery cell 2B may be arranged in the front-to-back direction (X direction) to form a first row R1. The third battery cell 2C and the fourth battery cell 2D may be arranged in the front-to-back direction to form a second row R2. The second row R2 may be disposed adjacent to the right side (Y direction) of the first row R1. The third battery cell 2C and the fourth battery cell 2D may be disposed in a zigzag configuration with the first battery cell 2A and the second battery cell 2B.

[0120] The first bent portion 132 may be bent along the side surface of the first battery cell 2A and extend between the first battery cell 2A and the third battery cell 2C. The first bent portion 132 may be bent to the right (Y direction) and contact the column portion 112 of the first support portion 11 on the right side. The second bent portion 133 may be bent along the side surface of the third battery cell 2C and extend between the second battery cell 2B and the third battery cell 2C. The second bent portion 133 may be bent to the left (-Y direction) and contact the column portion 112 of the first support portion 11 on the left side.

[0121] The third bent portion 134 may be bent along the side surface of the second battery cell 2B and extend between the second battery cell 2B and the fourth battery cell 2D. The third bent portion 134 may be bent to the right and contact the column portion 112 of the first support portion 11 on the right. The fourth bent portion 135 may be bent to the left along the side surface of the fourth battery cell 2D and contact the column portion 112 of the first support portion 11 on the left.

[0122] Since the extended wall portion 131 extends in the front-to-rear direction (X direction) along the first row R1 and the second row R2, and has a shape bent in a direction (Y direction) other than the extending direction, the contact area with multiple battery cells 2 can be further expanded and the bending rigidity can be further enhanced compared to battery cells extending along a straight line.

[0123] In addition, the curved portion of the extension wall portion 131 can be integrally connected to the column portion 112 of the first support portion 11 at multiple positions and orientations. Therefore, the extension wall portion 131 can ensure rigidity and stably maintain an upright state. In addition to the column portion 112, the extension wall portion 131 can also be supported by the extension column portion 136.

[0124] The extension column portion 136 may be formed to extend upward from the upper portion of the column portion 112. The extension wall portion 131 may have a height higher than the column portion 112, and the extension column portion 136 may extend upward to a height corresponding to the upper end portion of the extension wall portion 131. The extension column portion 136 may be integrally connected to the side surface of the extension wall portion 131. The lower portion of the extension wall portion 131 may be firmly supported by the plurality of column portions 112, and the upper portion of the extension wall portion 131 may be firmly supported by the extension column portion 136.

[0125] The pillar portion 112 may be positioned between the fifth battery cell 2E, the sixth battery cell 2F, and the seventh battery cell 2G. Fig.13 The guide groove 30 according to one embodiment of the present disclosure may include a first guide groove 31 , a second guide groove 32 , and a third guide groove 33 .

[0126] The first guide groove 31 may be formed in a portion of the column portion 112 facing the fifth battery cell 2E. The second guide groove 32 may be formed in a portion of the column portion 112 facing the sixth battery cell 2F. The third guide groove 33 may be formed in a portion of the column portion 112 facing the seventh battery cell 2G. The first guide groove 31, the second guide groove 32, and the third guide groove 33 may be formed to continuously extend from the lower end portion of the lower column portion 113 to the inclined surface 115.

[0127] The side surface of one battery cell 2 contacts the plurality of column portions 112, and by forming the guide groove 30 in each column portion 112, one battery cell 2 may contact the plurality of guide grooves 30. The number of guide grooves 30 facing one battery cell 2 may increase in proportion to the number of column portions 112. The plurality of guide grooves 30 may contact one battery cell 2 in respective directions corresponding to each of the plurality of column portions 112.

[0128] The adhesive liquid 3 may be filled in the guide groove 30. The side surface of the battery cell 2 may be more closely adhered to the cell support 10, more specifically, to the first support portion 11, and even more specifically, to the column portion 112, by the adhesive liquid 3 filled in the guide groove 30. Compared to an embodiment in which the guide groove 30 is not formed, by forming the guide groove 30, the contact area between the battery cell 2, the first support portion 11, and the adhesive liquid 3 may be further expanded to correspond to the width, length, and number of the guide grooves 30. Therefore, the bonding force between the battery cell holder 1 and the battery cell 2 by the adhesive liquid 3 may be further enhanced.

[0129] The flow groove 40 may be formed to be recessed upward in the bottom surface portion of the column portion 112. An edge portion of the flow groove 40 may contact an edge portion of the through hole 20, and may be formed to be open toward the through hole 20. A plurality of through holes 20 may be connected to communicate with each other through the flow groove 40. A plurality of through holes 20 and a plurality of flow grooves 40 may together form a continuously connected space portion.

[0130] The edge portion of the flow groove 40 may contact the lower portion of the guide groove 30. The edge portion of the flow groove 40 may contact the lower portion of the guide groove 30 in addition to contacting the through hole 20. A plurality of through holes 20 and a plurality of guide grooves 30 may be connected to communicate with each other through the flow groove 40. A plurality of through holes 20, a plurality of guide grooves 30, and a plurality of flow grooves 40 may together form a continuously connected space portion.

[0131] Reference Figure 6 , Fig.10 and Fig.12 , the flow groove 40 according to one embodiment of the present disclosure may include a recessed portion 41 and an opening portion 42. The recessed portion 41 may be formed to be recessed upward in the lower end portion of the column portion 112. The opening portion 42 may be formed to be open in the side portion in the lateral direction of the recessed portion 41. The opening portion 42 may contact the through hole 20 and the guide groove 30.

[0132] The opening portion 42 according to one embodiment of the present disclosure may include a first opening portion 43, a second opening portion 44, and a third opening portion 45. The first opening portion 43 may be formed to open in a portion of the concave portion 41 that contacts one through hole 20 in the lateral direction. The second opening portion 44 may be formed to open in a portion of the concave portion 41 that contacts another through hole 20 in the lateral direction. The third opening portion 45 may be formed to open in a portion of the concave portion 41 that contacts yet another through hole 20 in the lateral direction.

[0133] As shown above, the first opening portion 43, the second opening portion 44, and the third opening portion 45 may be in contact with three through holes 20, respectively. In addition, the first opening portion 43, the second opening portion 44, and the third opening portion 45 may be in contact with the first guide groove 31, the second guide groove 32, and the third guide groove 33, respectively. One opening portion 42 may be in contact with one through hole 20 and one guide groove 30 at the same time. One opening portion 42 may be in contact with one through hole 20 in the lateral direction, and at the same time, with one guide groove 30 on the upward side thereof.

[0134] By forming three opening portions 42 in one flow groove 40, one flow groove 40 can be connected to three through holes 20 and three guide grooves 30 to communicate with each other. At a position where the flow groove 40 is not formed or the opening portion 42 is not formed, connection between a plurality of through holes 20 may not occur, and direct connection between a through hole 20 and a guide groove 30 may not occur.

[0135] The side surface of one battery cell 2 contacts the plurality of column portions 112, and by forming the flow groove 40 in each column portion 112, one battery cell 2 may contact the plurality of flow grooves 40. The number of flow grooves 40 contacting one through hole 20 may increase in proportion to the number of column portions 112. The adhesive liquid 3 may be filled in the flow groove 40.

[0136] As the width, height, and number of the flow grooves 40 increase, the flow passage of the adhesive liquid 3 interconnecting the through-holes 20 and the flow grooves 40 can be further expanded. In addition, by forming the flow grooves 40, the contact area between the cooling tray 4, the first support portion 11, and the adhesive liquid 3 can be further expanded to correspond to the width, area, and number of the flow grooves 40, compared to the embodiment in which the flow grooves 40 are not formed. Therefore, the bonding force between the battery cell holder 1 and the cooling tray 4 through the adhesive liquid 3 can be further enhanced.

[0137] The seating protrusion 50 may be formed to protrude upward from the upper surface portion of the second support portion 12. Since the second support portion 12 is formed to protrude toward the through hole 20, the edge portion of the battery cell 2 may be located at the upper side of the second support portion 12. By forming the seating protrusion 50 to protrude upward from the upper portion of the second support portion 12, the battery cell 2 may be directly seated on the seating protrusion 50.

[0138] The bottom surface portion of the second support portion 12 may be positioned at the first reference height S1. In this case, the upper surface portion of the second support portion 12 may be positioned at the second reference height S2. In this case, the upper surface portion of the seating protrusion 50 may be positioned at the third reference height S3. Although the bottom surface portion of the battery cell holder 1 according to one embodiment of the present disclosure is positioned at the first reference height S1, the battery cell 2 may be positioned at the third reference height S3.

[0139] The second support portion 12 may have a first thickness G1, and the seating protrusion 50 may have a second thickness G2. The flow groove 40 may be formed to be recessed upwardly into the first thickness G1. A channel and a receiving space for the adhesive liquid 3 corresponding to the flow groove 40 may be formed between the second support portions 12. The bonding force between the battery cell holder 1 and the cooling tray 4 may be further enhanced by the flow groove 40. A plurality of through holes 20 may be connected at the lower side of the battery cell 2 by the flow groove 40 to communicate with each other, so that the adhesive liquid 3 may be evenly distributed in the plurality of through holes 20.

[0140] The seating protrusion 50 may have a second thickness G2. Although the bottom surface portion of the battery cell 2 is disposed at the third reference height S3, the edge portion of the bottom surface portion of the battery cell 2 may face the second support portion 12 with a separation gap corresponding to the second thickness G2, and the center portion of the bottom surface portion of the battery cell 2 may face the cooling tray 4 with a separation gap corresponding to the sum of the first thickness G1 and the second thickness G2. The gap between the battery cell 2 and the cooling tray 4 may also vary depending on the separation gap between the bottom surface of the battery cell holder 1 and the cooling tray 4.

[0141] Reference Figure 8 , Fig. 9 and Fig.11 , the seating protrusion 50 according to one embodiment of the present disclosure may include a protrusion body 51 , a first connection portion 52 , and a second connection portion 53 .

[0142] The upper surface portion of the protrusion body 51 may have a shape corresponding to the contact surface with the battery cell 2. The battery cell 2 as a whole may have a circumferential shape, and the bottom surface of the battery cell 2 may have a flat shape. The upper surface portion of the protrusion body 51 may have a flat surface corresponding to the bottom surface of the battery cell 2.

[0143] The protrusion body 51 may have a set thickness capable of spacing the lower portion of the battery cell 2 from the second support portion 12 and a set width capable of supporting the battery cell 2. The protrusion body 51 may have a shape of a flat piece with a flat upper surface and may have a second thickness G2. One end of the protrusion body 51 facing the through hole 20 may form a continuous vertical surface with one end of the second support portion 12.

[0144] The first connection portion 52 may be formed on a portion of the protrusion body 51 facing the second support portion 12. The first connection portion 52 is formed on a lower portion of the protrusion body 51 and may be integrally connected to the second support portion 12. The second connection portion 53 may be formed on a portion of the protrusion body 51 facing the first support portion 11. The second connection portion 53 may be formed on a side portion of the protrusion body 51 and may be integrally connected to the first support portion 11.

[0145] The seating protrusion 50 may be positioned at a connection portion between the first support portion 11 and the second support portion 12. The seating protrusion 50 may have a lower portion and a side portion integrally connected to the first support portion 11 and the second support portion 12 through the first connection portion 52 and the second connection portion 53, respectively. Therefore, the connection portion between the first support portion 11 and the second support portion 12 may further enhance rigidity by the seating protrusion 50. In addition, the first support portion 11 may have a side surface supported by the seating protrusion 50.

[0146] According to an embodiment of the present disclosure having the above-mentioned configuration, since the guide groove 30 forms a channel for the flowable adhesive liquid 3 along the side surface of the battery cell 2, the adhesive liquid 3 can flow upward or downward along the side surface of the battery cell 2 while being guided by the guide groove 30, depending on the pressing force applied when the battery cell 2 is assembled and seated in the cell support 10.

[0147] More specifically, during the process of inserting the battery cell 2 into the lower portion of the battery cell holder 1, the adhesive liquid 3 in contact with the side surface of the battery cell 2 may be dispersed and flow upward and downward while being guided by the guide groove 30. Thereafter, during the process of further moving the battery cell 2 downward until the battery cell 2 is seated in the battery cell holder 1, the adhesive liquid 3 in contact with the lower portion of the battery cell 2 may be pushed to the edge portion of the battery cell 2 and then move upward while being guided by the guide groove 30.

[0148] Such an operation can reduce the resistance caused by the adhesive liquid 3 during the assembly of inserting and seating the battery cell 2 in the battery cell holder 1 , and the assembly of the battery cell 2 can be performed more easily.

[0149] In addition, according to an embodiment of the present disclosure, after the assembly of the battery cell 2 is completed in the battery cell holder 1, the adhesive liquid 3 can naturally flow downward by its own weight while being guided by the guide groove 30, and at the same time, the air mixed in the adhesive liquid 3 can be discharged through the guide groove 30.

[0150] Therefore, the amount of air mixed in the adhesive liquid 3 can be reduced, thereby minimizing the separation space between the battery cell holder 1, the battery cell 2 and the cooling tray 4 due to the introduction of air. Therefore, the adhesive liquid 3 can be tightly and densely filled in the separation space between the battery cell holder 1, the battery cell 2 and the cooling tray 4, so that when the adhesive liquid 3 is cured, the rigidity of the battery module and the battery pack can be further enhanced. In addition, when a thermally conductive material is applied to the adhesive liquid 3, the cooling function by the cooling tray 4 can be further improved.

[0151] In addition, according to the embodiment of the present disclosure, not only the lower portion of the battery cell 2 may be in contact with the adhesive liquid 3 filled in the lower portion of the battery cell holder 1, but also the side surface of the battery cell 2 may be in contact with the adhesive liquid 3 filled in the guide groove 30. Therefore, when the adhesive liquid 3 is cured, the bonding force between the battery cell holder 1 and the battery cell 2 may be further enhanced.

[0152] In addition, according to the embodiment of the present disclosure, since the flow grooves 40 connect the plurality of through holes 20 that are connected to each other, in response to the pressing force applied when the battery cell 2 is inserted and seated in the cell support 10, the adhesive liquid 3 can flow freely between the through holes 20 through the flow grooves 40. Therefore, during assembly of inserting and seating the battery cell 2 in the battery cell holder 1, resistance caused by the adhesive liquid 3 can be reduced, and assembly of the battery cell 2 can be performed more easily.

[0153] In addition, according to an embodiment of the present disclosure, since the seating protrusion 50 forms a separation gap between the lower portion of the battery cell 2 and the battery cell retainer 1, the adhesive liquid 3 can flow into the separation gap, and thus by introducing the adhesive liquid 3 into the space between the lower portion of the battery cell 2 and the cell support 10, the joint between the battery cell retainer 1 and the lower portion of the battery cell 2 can be more clearly and firmly formed.

[0154] The battery cell 2 is shown in a circular shape in the drawings, but the present disclosure is not limited thereto and may be configured in various shapes, such as an angled shape or a pouch shape. In addition, the housing for the battery cell 2 may be made of a metal such as aluminum, an aluminum alloy, nickel-plated steel, etc., or made of a laminated film or plastic forming a pouch.

[0155] The present disclosure has been described with reference to limited embodiments and drawings, but the present disclosure is not limited thereto. A person skilled in the art to which the present disclosure pertains may change or modify the described embodiments within the technical spirit of the present disclosure and within the scope equivalent to the appended claims.

[0156] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0145755 filed in the Korean Intellectual Property Office on October 27, 2023, the disclosure of which is incorporated herein by reference in its entirety.

Claims

1. A battery cell holder, comprising: a cell support to which a plurality of battery cells are assembled and seated; a through hole formed through the single body support and into which an adhesive liquid is introduced; as well as A guide groove, formed on the cell support to extend in a seating direction of the battery cell, contacts the through hole and is configured to form a channel through which the adhesive liquid can flow along a side surface of the battery cell.

2. The battery cell holder according to claim 1, wherein the cell support member comprises: a first supporting portion extending along an edge portion of the battery cell and contacting a side surface of the battery cell; as well as A second supporting portion is formed at a lower portion of the first supporting portion and contacts a lower portion of the battery cell.

3. The battery cell holder according to claim 2, wherein the first supporting portion comprises: a partition portion formed in a position where two battery cells face each other and having a fence form capable of partitioning a disposition space of the plurality of battery cells; as well as A column portion is formed in a position where three or more battery cells face each other and has a column form higher than the partition portion.

4. The battery cell holder according to claim 3, wherein the column portion comprises: a lower column portion having a shape corresponding to the separation space between the battery cells; as well as The upper pillar portion is formed on an upper portion of the lower pillar portion and has a shape in which a width becomes narrower toward an upper portion. 5 . The battery cell holder according to claim 4 , wherein the partition portion is formed with a first height, the lower pillar portion has a second height higher than the first height, and the upper pillar portion has a third height higher than the second height. 6 . The battery cell holder according to claim 4 , wherein the upper column portion comprises an inclined surface formed to be inclined in a position facing the battery cell. 7 . The battery cell holder according to claim 6 , wherein the guide groove is formed to continuously extend from the lower column portion to the inclined surface.

8. The battery cell holder according to claim 3, wherein the guide groove comprises: a first guide groove formed in a portion of the column portion facing the first battery cell; as well as A second guide groove is formed in a portion of the column portion facing the second battery cell. 9 . The battery cell holder according to claim 2 , wherein the cell support further comprises a third support portion having a height higher than the second support portion and extending along an arrangement direction of the battery cells and contacting a side surface of the battery cells.

10. The battery cell holder according to claim 9, wherein the battery cell comprises: a first row in which first battery cells and second battery cells are arranged in a first direction; as well as a second row, disposed adjacent to the first row, and in which a third battery cell and a fourth battery cell are arranged in the first direction, and the third battery cell and the fourth battery cell are disposed in a zigzag configuration with the first battery cell and the second battery cell, The third supporting portion comprises: a first bent portion bent along a side surface of the first battery cell and extending between the first battery cell and the third battery cell; a second bent portion bent along a side surface of the third battery cell and extending between the second battery cell and the third battery cell; and A third bent portion is bent along a side surface of the second battery cell and extends between the second battery cell and the fourth battery cell.

11. The battery cell holder according to claim 10 , wherein the first bent portion is bent in a second direction and contacts the first supporting portion in the second direction, The second bent portion is bent in the third direction and is in contact with the first supporting portion in the third direction.

12. The battery cell holder according to claim 9, wherein the third supporting portion comprises: an extending wall portion extending along the arrangement direction of the battery cells; as well as An extension column portion extends upward from the first support portion and is connected to a side surface of the extension wall portion.

13. The battery cell holder according to claim 1 further includes a flow groove, which is formed to be recessed in the lower portion of the cell support, contacts the plurality of through holes, and is configured to form a channel through which the adhesive liquid can flow from one of the through holes to another of the through holes.

14. The battery cell holder according to claim 13, wherein the cell support member comprises: a partition portion in the form of a fence capable of partitioning the arrangement space of the battery cells; as well as a column portion having a column form capable of filling a separation space between the battery cells and the guide groove is formed in the column portion, The flow groove is formed in a lower portion of the column portion to communicate with the guide groove.

15. The battery cell holder according to claim 14, wherein the flow channel comprises: a concave portion formed to be concave upward in a lower portion of the column portion; as well as An opening portion is formed to open in a lateral direction in a side portion of the recessed portion and to contact the through hole and the guide groove.

16. The battery cell holder according to claim 15, wherein the opening portion comprises: a first opening portion formed to open in a first portion of the recessed portion and to contact one of the plurality of guide grooves; as well as A second opening portion is formed to open in a second portion of the recessed portion and to contact another guide groove of the plurality of guide grooves. 17 . The battery cell holder according to claim 1 , further comprising a seating protrusion formed to protrude upward on the cell supporter and configured to form a separation space between a lower portion of the battery cell and the cell supporter to allow introduction of the adhesive liquid.

18. The battery cell holder according to claim 17, wherein the cell support comprises: a first supporting portion in contact with a side surface of the battery cell; as well as a second supporting portion in contact with the lower portion of the battery cell, The seating protrusion is formed on an upper surface portion of the second supporting portion.

19. The battery cell holder according to claim 18, wherein the seating protrusion comprises: a protrusion body having a set thickness allowing the lower portion of the battery cell to be spaced apart from the second supporting portion and a set width allowing the battery cell to be supported; a first connection portion formed in a lower portion of the protrusion body and connected to the second support portion; as well as A second connection portion is formed in a side portion of the protrusion body and connected to the first support portion.

20. The battery cell holder according to claim 18, wherein the second supporting portion comprises: a rigid reinforcing portion having the seating protrusion formed on an upper portion thereof; as well as an adhesive reinforcing portion formed on one or both sides of the rigid reinforcing portion, spaced apart from the lower portion of the battery cell, and allowing the adhesive liquid to be introduced into a space between the adhesive reinforcing portion and the battery cell, The adhesive reinforcing portion and a separation space between the battery cell are in contact with the through hole.

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