Battery assembly

Abstract

Battery assembly (100), comprising: a recording housing that forms an internal recording space; and a plurality of battery cells (200) comprising a cell housing, an electrode assembly arranged within the cell housing, and conductor tab sections (202a, 202b) electrically connected to the electrode assembly and projecting outwards from the cell housing; wherein the plurality of battery cells (200) comprises a first group of battery cells (501) containing the conductor tab sections (202a, 202b) projecting from one side of the cell housing, and a second group of battery cells (502) containing the conductor tab sections (202a, 202b) projecting from the other side of the cell housing; wherein the first group of battery cells (501) and the second group of battery cells (502) are arranged alternately in the receiving space; and wherein the battery assembly (100, 180) further comprises a first ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections (202a, 202b) of the first group of battery cells (501) face the receiving housing, and a second ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections (202a, 202b) of the second group of battery cells (502) face the receiving housing.

Description

BACKGROUND OF REVELATION 1. Area

[0001] This disclosure concerns a battery assembly. 2. Description of the related technology

[0002] The operating principle of a lithium-ion secondary battery is an electrochemical oxidation-reduction reaction. Specifically, it generates electricity through the movement of lithium ions and is charged through the reverse process. In a lithium-ion secondary battery, the phenomenon of lithium ions migrating from the anode output through the electrolyte and separator to the cathode is called discharge. The reverse process of this phenomenon is called charging.

[0003] However, recent fires and explosions occurring during the use of lithium secondary batteries have heightened public concerns about battery safety. One of today's key development challenges for lithium secondary batteries is eliminating the instability associated with battery use, such as fires and / or explosions caused by heat spread and thermal runaway within the battery cell.

[0004] Therefore, measures are needed to ensure effective heat dissipation from the battery itself and to provide adequate space for the effective venting of gases generated within the battery.

[0005] According to one aspect of the present disclosure, one task is to improve the stability of the battery assembly.

[0006] According to another aspect of the present disclosure, one task is to delay thermal runaway occurring within the battery assembly.

[0007] According to another aspect of the present disclosure, one task is to improve the service life of the battery assembly.

[0008] According to another aspect of the present disclosure, one task is to improve the space utilization of the battery assembly.

[0009] Meanwhile, the battery assembly according to this disclosure can be widely used in the field of green technology, including electric vehicles, battery charging stations, energy storage systems, and other applications that use battery cells, such as photovoltaics and wind energy. Furthermore, the battery assembly according to this disclosure can be used in environmentally friendly mobility, including electric and hybrid vehicles, to help prevent climate change by suppressing air pollution and greenhouse gas emissions. SUMMARY OF THE REVELATION

[0010] A battery assembly according to an embodiment of the present disclosure may include: a receiving housing forming an internal receiving space; and a plurality of battery cells comprising a cell housing, an electrode assembly arranged within the cell housing, and conductor tab sections electrically connected to the electrode assembly and projecting outwards from the cell housing; wherein the plurality of battery cells may comprise a first group of battery cells comprising the conductor tab sections projecting from one side of the cell housing, and a second group of battery cells comprising the conductor tab sections projecting from the other side of the cell housing; wherein the first group of battery cells and the second group of battery cells may be arranged alternately;and wherein the battery assembly may further comprise a first ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections of the first group of battery cells face the receiving housing, and a second ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections of the second group of battery cells face the receiving housing.

[0011] In one embodiment, the battery assembly may further include cooling plates arranged between the first group of battery cells and the second group of battery cells, on one side of the first group of battery cells and on the other side of the second group of battery cells.

[0012] In one embodiment, the battery assembly may further include a first busbar connecting the cooling plate arranged on one side of the first group of battery cells and the conductor tab sections of the first group of battery cells, and a second busbar connecting the cooling plate arranged between the first group of battery cells and the second group of battery cells and the conductor tab sections of the second group of battery cells.

[0013] In one embodiment, the first busbar and the cooling plate, which is arranged on one side of the first group of battery cells, can be welded together, and the second busbar and the cooling plate, which is arranged between the first group of battery cells and the second group of battery cells, can be welded together.

[0014] In one embodiment, the battery assembly may further include an electrical insulating element attached to each of the first busbar and the second busbar.

[0015] In one embodiment, the electrical insulating element can contain one or a combination of mica, glass fiber, or ceramic fiber.

[0016] In one embodiment, the first group of battery cells can include a first vent hole to release gas generated within the first group of battery cells.

[0017] In one embodiment, the battery assembly may further include a first thermal insulation film which is attached to the surface of the cell housing of the first group of battery cells on which the first vent hole is formed.

[0018] In one embodiment, the first thermal insulation film may further include a first slit formed in a position corresponding to the first vent hole to allow gas released from the first vent hole to be released to the outside.

[0019] In one embodiment, the second group of battery cells can include a second vent hole to release gas generated within the second group of battery cells.

[0020] In one embodiment, the battery assembly according to the present disclosure may further include a second thermal insulation film which is attached to the surface of the cell housing of the second group of battery cells on which the second vent hole is formed.

[0021] In one embodiment, the second thermal insulation film may further include a second slit formed in a position corresponding to the second vent hole, in order to allow gas released from the second vent hole to be released to the outside.

[0022] In one embodiment, each of the first group of battery cells and the second group of battery cells can contain the plurality of battery cells, and wherein the battery assembly can further comprise a first plate-shaped protective element arranged between the plurality of battery cells contained in the first group of battery cells; and a second plate-shaped protective element arranged between the plurality of battery cells contained in the second group of battery cells.

[0023] According to one embodiment of the present disclosure, the stability of the battery assembly can be improved.

[0024] According to another embodiment of the present disclosure, thermal runaway occurring within the battery assembly can be delayed.

[0025] According to another embodiment of the present disclosure, the service life of the battery assembly can be improved.

[0026] According to another embodiment of the present disclosure, the space utilization of the battery assembly can be improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1A is an exploded view of a battery assembly according to the present disclosure. Fig. 1B represents a battery assembly according to the present disclosure. Fig. 1C represents another battery assembly according to the present disclosure. Fig. 1D represents an ejection passage of the battery assembly according to the present disclosure. Fig. 2A represents a battery assembly according to the present disclosure. Fig. 2B represents a battery assembly according to the present disclosure. Fig. Figure 3 represents a battery assembly as described in the present disclosure, viewed from one direction. Fig. Figure 4 represents a battery assembly according to the present disclosure. Fig. 5A, Fig. 5B, Fig. 6 and Fig. Figure 7 represents a battery assembly as described in the present disclosure, viewed from one direction. Fig. Figure 8 represents a battery assembly according to the present disclosure. Fig. Figure 9 represents a first cooling channel and a cooling plate according to the present disclosure. Fig. Figure 10 represents a second cooling channel and a cooling plate according to the present disclosure. DETAILED DESCRIPTION

[0027] Specific terms used herein are for the sake of simplicity of description only and are not intended to limit the scope of the exemplary embodiments.

[0028] For example, terms like "equal" and "identical" do not only indicate strictly identical states, but also states in which tolerances exist or in which differences exist in the extent to which the same function is achieved.

[0029] Expressions that specify a relative or absolute positioning, such as "in any direction", "along any direction", "parallel", "perpendicular", "towards the center", "concentric" or "coaxial", not only strictly specify such a positioning, but also a state in which there is a displacement relative to the specified direction within a tolerance or angle or distance that achieves the same function.

[0030] The use of terms such as preceding “first”, “second”, or “third” components, mentioned below, is solely intended to avoid confusion regarding the components being referred to and does not imply any order, importance, or superior-subordinate relationship between the components. For example, an invention containing only the second component without the first component is also feasible.

[0031] Unless the context clearly indicates otherwise, singular expressions used in this description may contain plural expressions.

[0032] The following describes in detail a preferred embodiment of the present disclosure with reference to the accompanying drawings. The configuration of the device and control methods described below are intended only to illustrate the embodiment of the present disclosure and are not intended to limit the scope of the present disclosure. Reference numerals used consistently throughout the description denote the same components.

[0033] Fig. Figure 1A is an exploded view of a battery assembly according to the present disclosure. Fig. 1B represents a battery assembly according to the present disclosure.

[0034] More precisely, it shows Fig. 1A an expanded view of the in Fig. Battery assembly 100 shown in 1B.

[0035] With reference to Fig. 1A The battery assembly 100 according to the present disclosure can contain a plurality of battery cells 200. The battery assembly 100 according to the present disclosure can represent a battery module containing a plurality of battery cells 200.

[0036] Each of the plurality of battery cells 200 according to the present disclosure can be a secondary battery capable of undergoing repeated charging and discharging. In one embodiment, each of the plurality of battery cells 200 can be a secondary battery of various types, such as a lithium-ion battery, a vanadium-ion battery, a solid-state battery, a metal-air battery, a sodium-ion battery, or an aluminum-ion battery.

[0037] Each of the 200 battery cells can be stacked and arranged in a predetermined first direction (X-axis direction) and a second direction (Y-axis direction). Each of the 200 battery cells can represent a prismatic battery cell.

[0038] The battery assembly 100 according to this disclosure can include a receiving housing comprising an upper housing 104a arranged above the plurality of battery cells 200 and a lower housing 104b arranged below the plurality of battery cells 200. The upper housing 104a and the lower housing 104b can serve to form an exhaust passage for gas or heat emitted from within the plurality of battery cells 200, to be discharged through vent holes formed in each of the plurality of battery cells 200. Each of the plurality of battery cells 200 according to the present disclosure can be, by reference to Fig. The battery assembly 100 includes six vent holes 610, 630 to release heat or gas from the interior of the battery assembly 200. The upper housing 104a and the lower housing 104b can serve to prevent gas or heat from spreading to adjacent battery cells below the battery assembly 200 when gas or heat is released. Additionally, the upper housing 104a and the lower housing 104b can serve to fix the position of the battery assembly 200 within the battery assembly 100 or to protect the battery assembly 200 from impact. According to one embodiment, the upper housing 104a and the lower housing 104b can be made of a material such as metal, ceramic, or polymer. For example, the metal can include steel, but the type of metal is not limited to this.

[0039] The receiving housing according to the present disclosure may further comprise a side housing 101. The side housing 101 may be coupled to the upper housing 104a and the lower housing 104b.

[0040] In one embodiment, the upper housing 104a and the lower housing 104b can be spaced apart vertically. The vertical direction can be the third direction (Z-axis direction). The first direction (X-axis direction), the second direction (Y-axis direction), and the third direction (Z-axis direction) can be mutually perpendicular.

[0041] The upper housing 104a, the lower housing 104b, and the side housing 101 can be combined to form a receiving space for the multitude of battery cells 200. The multitude of battery cells 200 can be accommodated within the receiving space.

[0042] In one embodiment, a battery assembly 100 according to the present disclosure can comprise a receiving housing forming an inner receiving space; and a plurality of battery cells 200 comprising a cell housing, an electrode assembly arranged within the cell housing, and conductor tab sections 202a, 202b electrically connected to the electrode assembly and projecting outwards from the cell housing; wherein the plurality of battery cells 200 can comprise a first group of battery cells 501 comprising the conductor tab sections projecting from one side of the cell housing, and a second group of battery cells 502 comprising the conductor tab sections projecting from the other side of the cell housing; wherein the first group of battery cells 501 and the second group of battery cells 502 can be arranged alternately;and wherein the battery assembly 100 may further comprise a first ejection passage formed in an area where the conductor tab sections of the first group of battery cells 501 face the receiving housing, between the receiving housing and the receiving space, and a second ejection passage formed in an area where the conductor tab sections of the second group of battery cells 502 face the receiving housing, between the receiving housing and the receiving space.

[0043] For example, with reference to Fig. 2A, each of the plurality of battery cells 200 comprises a cell housing containing an electrode assembly and a conductor tab section 202a, 202b, which is electrically connected to the electrode assembly and projects from one side of the cell housing. That is to say, each of the plurality of battery cells 200 can comprise a unidirectional battery cell with conductor tabs 202a, 202b projecting on one side. In one embodiment, with reference to Fig. 2A, the plurality of battery cells 200 comprises a first group of battery cells 501, in which the conductor tab sections 202a, 202b are arranged facing the upper housing 104a, and a second group of battery cells 502, in which the conductor tab sections 202a, 202b are arranged facing the lower housing 104b. In this case, the first group of battery cells 501 and the second group of battery cells 502 can be arranged alternately along a first direction (X-axis direction). In one embodiment, the first group of battery cells 501 can form a vent hole 610 in a direction facing the upper housing 104a. For example, the second group of battery cells 502 can form a vent hole 630 in a direction facing the lower housing 104b.

[0044] The vent hole 610 of the first group of battery cells 501 according to this disclosure can also be formed in the direction facing the lower casing 104b. That is to say, the vent hole 610 can be formed in the area of ​​the cell casing where the conductor tab section contained in each of the first group of battery cells 501 is not formed.

[0045] The vent hole 630 of the second group of battery cells 502 according to this disclosure can also be formed in a direction facing the upper casing 104a. That is to say, the vent hole 630 can be formed in the area of ​​the cell casing where the conductor tab section contained in each of the second group of battery cells 502 is not formed.

[0046] In one embodiment, each of the first group of battery cells 501 and each of the second group of battery cells 502 can contain a plurality of battery cells arranged with a predetermined number of battery cells in each of the first direction (X-axis direction) and the second direction (Y-axis direction). For example, the predetermined number can be chosen to be two, but the number is not limited to this. For example, the predetermined number contained in the first group of battery cells 501 and the predetermined number contained in the second group of battery cells 502 can be chosen to be different from each other.

[0047] In one embodiment, the battery assembly 100 according to the present disclosure can further comprise a first thermal insulation film 320, which is attached to the surface of the cell casing of the first group of battery cells 501, on which the first vent hole is formed. In one embodiment, the battery assembly 100 according to the present disclosure can further comprise a second thermal insulation film 320, which is attached to the surface of the cell casing of the second group of battery cells 502, on which the second vent hole is formed.

[0048] For example, the battery assembly 100 according to this disclosure may further include a thermal insulation film 320 attached to the plurality of battery cells 200. The thermal insulation film 320 may prevent heat transfer between the plurality of battery cells 200 and the outside and / or heat transfer between adjacent battery cells 200 within the plurality of battery cells 200. For example, the material of the thermal insulation film 320 may be formed from any or a combination of mica, films of flame-retardant materials, extinguishing agents, and ceramic wool. However, this is an example, and the thermal insulation film 320 of the present disclosure may not be limited to the material of the above example, as long as it is a material capable of preventing heat transfer.

[0049] The thermal insulation film 320 can be attached to the cell casing of each of the plurality of battery cells 200. In particular, the thermal insulation film 320 can be attached to the surface of the cell casing where the conductor tab sections 202a, 202b are located. The thermal insulation film 320 can be attached to the surface of each cell casing of the plurality of battery cells 200 where a vent hole is formed. For example, the thermal insulation film 320 can be attached to the surface of the first group of battery cells 501, which faces the upper casing 104a, beneath the surfaces of the cell casing. For the second group of battery cells 502, the thermal insulation film 320 can be attached to the surface of the cell casing that faces the lower casing 104b.

[0050] The thermal insulation film 320 may have a slot 320a formed therein to allow gas or heat emitted by the multitude of battery cells 200 to be released to the outside. The slot 320a may be formed in a position corresponding to the location of a vent hole.

[0051] In one embodiment, the battery assembly 100 according to the present disclosure may further comprise a first busbar connecting the cooling plate 110 arranged on one side of the first group of battery cells 501 and the conductor tab sections of the first group of battery cells 501, and a second busbar connecting the cooling plate 110 arranged between the first group of battery cells 501 and the second group of battery cells 502 and the conductor tab sections of the second group of battery cells 502.

[0052] For example, the battery assembly 100 according to this disclosure can further include a busbar 310 to connect the conductor tab sections of adjacent battery cells among the plurality of battery cells 200.

[0053] In one embodiment, the battery assembly 100 according to the present disclosure may further include an electrical insulating element 105 which is attached to each of the first busbar and the second busbar.

[0054] For example, the battery assembly 100 according to the present disclosure may further include an electrical insulating element 105 arranged on the busbar 310. The electrical insulating element 105 may contain an insulating tape. The material of the electrical insulating element 105 may include mica, films of flame-retardant materials, extinguishing agents, glass fiber, ceramic fiber, or any combination thereof. However, this is an example, and the electrical insulating element 105 of the present disclosure may not be limited to the material of the above example, as long as it is a material capable of insulating the busbar 310. The electrical insulating element 105 may serve to electrically insulate the busbar 310 and prevent short circuits. The electrical insulating element 105 may serve to prevent heat transfer between the plurality of battery cells 200.

[0055] In one embodiment, the battery assembly 100 according to the present disclosure may further include: cooling plates 110, each arranged on one side of the first group of battery cells 501, between the first group of battery cells 501 and the second group of battery cells 502 and on the other side of the second group of battery cells 502.

[0056] For example, according to the present disclosure, the battery assembly 100 can further include a cooling plate 110 arranged between the first group of battery cells 501 and the second group of battery cells 502. The cooling plate 110 can be stacked and arranged along a first direction (X-axis direction).

[0057] The cooling plate 110 can be made of a metallic material, with at least some areas being electrically insulated. The cooling plate 110 can also be made of a non-metallic material, including plastic.

[0058] The battery assembly 100 according to the present disclosure can be described with reference to Fig. 2A further includes a first cooling channel 250a and a second cooling channel 250b. One of the first cooling channel 250a and the second cooling channel 250b can represent a channel through which a cooling medium, for example a coolant, flows into the cooling plate 110, while the other can represent a channel through which a cooling medium flows out of the cooling plate 110.

[0059] The battery assembly 100 according to the present disclosure may further include a support plate 102. The support plate 102 may be referred to as a hose guide. The support plate 102 may be coupled to the side housing 101. The support plate 102 may protect the first cooling channel 250a and the second cooling channel 250b.

[0060] The battery assembly 100 according to the present disclosure may further include a cell monitoring unit (CMU, not shown). The CMU may measure status information, which includes at least one of the voltage, current, or temperature of the plurality of battery cells 200, and transmit the status information to an external device.

[0061] In one embodiment, the first group of battery cells 501 includes a first vent hole to release gas generated within the first group of battery cells 501. In another embodiment, the second group of battery cells 502 includes a second vent hole to release gas generated within the second group of battery cells 502.

[0062] For example, according to the present disclosure, the battery assembly 100 may further include an ejection passage through which, with reference to Fig. 6, gas or heat released from vent holes 610, 630.

[0063] The battery assembly 100 according to the present disclosure may further comprise a first ejection passage through which, with reference to Fig. 2A, gas or heat is discharged from the vent holes 610 of the first group of battery cells 501. The first ejection passage can be formed between the upper casing 104a, which faces the conductor tab section of the first group of battery cells 501, and the space accommodating the plurality of battery cells 200.

[0064] The battery assembly 100 according to the present disclosure may further include a second ejection passage in order to, with reference to Fig. 2A, to discharge gas or heat released from the vent holes 630 of the second group of battery cells 502. The second discharge passage can be formed between the lower housing 104b, which faces the conductor tab section of the second group of battery cells 502, and the space accommodating the plurality of battery cells 200.

[0065] According to one embodiment, the upper housing 104a and the lower housing 104b can further include a recessed section that is recessed along a third direction (Z-axis direction). For example, the upper housing 104a can form a recessed section that is recessed away from the receiving space along the third direction (Z-axis direction). For example, the lower housing 104b can form a recessed section that is recessed away from the receiving space along a direction (-Z-axis direction) that is symmetrical to the third direction (Z-axis direction).

[0066] This means that the first ejection passage can be formed in a recess in the upper housing 104a, recessed in a direction away from the receiving space for the plurality of battery cells 200. The second ejection passage can be formed in a recess in the lower housing 104b, recessed in a direction away from the receiving space for the plurality of battery cells 200.

[0067] In one embodiment, heat or gas generated by the first group of battery cells 501 can be released through the vent hole 610 into the slot 320a formed in the thermal insulation film 320. In another embodiment, the heat or gas released through the slot 320a can be released to the outside from the battery assembly 100 through the first ejection passage.

[0068] In one embodiment, heat or gas generated in the second group of battery cells 502 can be released through the vent hole 630 into the slot 320a formed in the thermal insulation film 320. In another embodiment, the heat or gas released through the slot can be discharged to the outside from the battery assembly 100 through a second discharge passage.

[0069] The battery assembly 100 according to the present disclosure can, by arranging the first ejection passage in one direction towards the upper housing 104a and arranging the second ejection passage in one direction towards the lower housing 104b, vertically separate the ejection passages (in the third direction). This allows the battery assembly 100 to ensure the stability of the battery cell 200.

[0070] The battery assembly 100 according to this disclosure can, by placing the cooling plate 110 between the first group of battery cells 501 and the second group of battery cells 502, directly cool the surfaces of the plurality of battery cells 200 that are in contact with the cooling plate 110.

[0071] The battery assembly 100 according to this disclosure does not require connecting the first group of battery cells 501 and the second group of battery cells 502 via separate connecting elements, thereby increasing the space utilization of the battery assembly 100. The battery assembly 100 according to this disclosure can connect the conductor tab sections 202a, 202b of the first group of battery cells 501 to the conductor tab sections 202a, 202b of the second group of battery cells 502 by means of the cooling plate 110 positioned between the first group of battery cells 501 and the second group of battery cells 502. That is to say, the battery assembly 100 according to this disclosure can increase the space utilization of the battery assembly 100 while serving to cool the space between the first group of battery cells 501 and the second group of battery cells 502 via the cooling plate 110.

[0072] Fig. 1C represents another battery assembly according to the present disclosure.

[0073] With reference to Fig. 1C can be a further battery assembly 180 according to the present disclosure, a battery pack comprising at least one battery assembly 100, which is a battery module (e.g. the battery assembly 100 of Fig. 1A and Fig. 1B) represents, records.

[0074] Another battery assembly 180 according to the present disclosure can include an enclosure body 213 and an enclosure cover 103, which provide a receiving space for receiving the battery modules (e.g., of the battery assembly 100 in Fig. 1A and Fig. 1B).

[0075] In one embodiment, the enclosure body 213 can form elements 211, 212 that subdivide the receiving space. The elements 211, 212 can include a first element 211 formed along a first direction (X-direction) and a second element 212 formed along a second direction (Y-direction).

[0076] In one embodiment, the housing body 213 can be connected to the housing cover 103. According to another embodiment, the housing body 213 can be connected to the housing cover 103 using an adhesive element. Alternatively, in another embodiment, the housing body 213 and the housing cover 103 can be connected to each other by the engagement of a hole formed in one and an insertion section formed in the other. For example, the housing cover 103 can form a hole, and the housing body 213 can form an insertion section capable of passing through the hole formed in the housing cover 103.

[0077] Fig. 1D represents an ejection passage of the battery assembly according to the present disclosure.

[0078] More specifically, with reference to Fig. 1D, she is a drawing showing the battery assembly 100, which is placed in the receiving space formed in the housing body 213.

[0079] In one embodiment, the housing cover 103 can serve to protect the battery assembly 100 containing a plurality of battery cells 200 from an impact.

[0080] In one embodiment, the housing body 213 can have an exhaust opening designed to allow heat or gas generated by each battery assembly 100 to be released to the outside.

[0081] According to one embodiment, heat or gas discharged through a first discharge passage formed in a depression in the upper housing 104a in a direction away from the receiving space for the plurality of battery cells 200 can be discharged to the outside through the discharge opening of another battery assembly 180.

[0082] According to one embodiment, heat or gas discharged through a second discharge passage formed in a depression in the lower housing 104b in a direction away from the receiving space for a plurality of battery cells 200 can be discharged to the outside through the discharge opening of another battery assembly 180.

[0083] Each battery assembly 100 is spatially separated from neighboring battery assemblies via the first element 211 and the second element 212, so that heat or gas generated in a battery assembly 100 cannot be transferred to a neighboring battery assembly.

[0084] Fig. 2A represents a battery assembly according to the present disclosure.

[0085] To simplify the description, specifically Fig. 2A, in which some components of the battery assembly 100 of Fig. 1A are omitted, shown.

[0086] According to one embodiment, a plurality of battery cells 200 can be stacked along a first predetermined direction (X-axis direction) and a second direction (Y-axis direction) perpendicular to the first direction.

[0087] Each of the multiple battery cells 200 can include a cell housing containing an electrode assembly and a conductor tab section 202a, 202b which is electrically connected to the electrode assembly and protrudes from one side of the cell housing.

[0088] The first conductor tab section 202a can represent a conductor tab section of a first polarity, and the second conductor tab section 202b can represent a conductor tab section of a second polarity that differs from the first polarity. For example, the first polarity can be the positive electrode, and the second polarity can be the negative electrode. Alternatively, the first polarity can be the negative electrode, and the second polarity can be the positive electrode. The array of battery cells 200 can comprise a first group of battery cells 501 arranged such that the conductor tab sections 202a, 202b face the upper casing 104a, and a second group of battery cells 502 arranged such that the conductor tab sections 202a, 202b face the lower casing 104b.Each of the first group of battery cells 501 can have its vent hole positioned facing the upper housing 104a, and each of the second group of battery cells 502 can have its vent hole positioned facing the lower housing 104b. In one embodiment, a slot 320a, corresponding to the vent hole formed in each of the first group of battery cells 501, can be formed in the thermal insulation film 320.

[0089] The first group of battery cells 501 and the second group of battery cells 502 can be arranged alternately along a predetermined first direction (X-axis direction) within the space that accommodates the plurality of battery cells 200.

[0090] In one embodiment, each of the first group of battery cells 501 and each of the second group of battery cells 502 can contain a predetermined number of the plurality of battery cells. The first group of battery cells 501 can contain battery cells arranged in a predetermined number in both the first direction (X-axis direction) and the second direction (Y-axis direction). The second group of battery cells 502 can contain battery cells arranged in a predetermined number in both the first direction (X-axis direction) and the second direction (Y-axis direction). For example, the predetermined number can be chosen to be two, but the predetermined number is not limited to this.

[0091] In one embodiment, each of the first group of battery cells 501 and the second group of battery cells 502 contains a plurality of battery cells 200, and wherein the battery assembly 100 may further include a first plate-shaped protective element 220 arranged between the plurality of battery cells 200 contained in the first group of battery cells 501, and a second plate-shaped protective element 220 arranged between the plurality of battery cells 200 contained in the second group of battery cells 502.

[0092] For example, the plate-shaped protective element 220 can be arranged between the plurality of battery cells contained in the first group of battery cells 501. A plate-shaped protective element 220 can be arranged between the plurality of battery cells contained in the second group of battery cells 502.

[0093] The protective element 220 can block heat propagation between the plurality of battery cells 200. The protective element 220 can be made of a material possessing heat-resistant and insulating properties. For example, the protective element 220 can contain at least some of the materials mica, mica foil, silicate, graphite, aluminum oxide, ceramic wool or superwool, and aerogel. However, the material of the protective element 220 of the present disclosure is not limited to these and can be made of different materials that are able to retain their shape and prevent thermal runaway between the plurality of battery cells 200 during thermal runaway conditions.

[0094] The cooling plate 110 can be stacked and arranged along a predetermined first direction (X-axis direction). The cooling plate 110 can extend along a second direction (Y-direction).

[0095] In one embodiment, the cooling plate 110 can be arranged on one side of the first group of battery cells 501. The cooling plate 110 can touch the side of the first group of battery cells 501 and cool that side.

[0096] In one embodiment, the cooling plate 110 can be positioned between the first group of battery cells 501, e.g., on the opposite side of the first group of battery cells 501, and the second group of battery cells 502, e.g., on one side of the second group of battery cells 502. The cooling plate 110 can be in contact with both the first group of battery cells 501 and the second group of battery cells 502 to cool them.

[0097] In one embodiment, the cooling plate 110 can be positioned on the opposite side from the second group of battery cells 502. The cooling plate 110 can be in contact with the opposite side of the second group of battery cells 502 in order to cool the opposite side of the second group of battery cells 502.

[0098] The battery assembly 100 according to the present disclosure can further comprise a first cooling channel 250a and a second cooling channel 250b. A cooling medium or cooling water can flow through the first cooling channel 250a and the second cooling channel 250b.

[0099] The first cooling channel 250a and the second cooling channel 250b can be connected to one end of the cooling plate 110. The cooling plate 110 can include an openable area. The cooling plate 110 can allow the cooling medium to flow into or out of the cooling plate 110 through the open area. The cooling plate 110 can close the open area to prevent the cooling medium from flowing in from the outside.

[0100] The first cooling channel 250a and the second cooling channel 250b can be designed to extend along a predetermined first direction (X-axis direction).

[0101] The first cooling channel 250a can move the cooling medium along a predetermined first direction (X-axis direction). The first cooling channel 250a can introduce the cooling medium, moving along the preselected first direction (X-axis direction), into the cooling plate 110, which is designed to extend in the second direction (Y-axis direction). At this point, the open area of ​​the cooling plate 110 can be in an open state.

[0102] The cooling medium, heated by cooling the multitude of battery cells 200 via the cooling plate 110, can flow out through the open area of ​​the cooling plate 110 into the second cooling channel 250b. The second cooling channel 250b can move the cooling medium along a preset first direction (X-axis direction).

[0103] In one embodiment, the battery assembly 100 according to the present disclosure can include a first terminal section 311 and a second terminal section 312. The first terminal section 311 and the second terminal section 312 can represent terminals that can be electrically connected between the battery assembly 100 and an external device. One of the first terminal section 311 and the second terminal section 312 can represent a positive terminal, and the other can represent a negative terminal. The positive terminal can be referred to as high-voltage positive, and the negative terminal can be referred to as high-voltage negative.

[0104] In one embodiment, a cell monitoring unit (CMU, not shown) can be arranged between the first terminal section 311 and the second terminal section 312. In another embodiment, the location of the CMU (not shown) is not limited to between the first terminal section 311 and the second terminal section 312. The CMU can measure status information, including at least one cell voltage, current, or temperature, from a plurality of battery cells 200 and transmit the status information to an external device.

[0105] Fig. 2B represents a battery assembly according to the present disclosure.

[0106] More specifically, Fig. 2B a representation of an embodiment in which, instead of containing two battery cells each in the first direction (X-axis direction) and the second direction (Y-axis direction), each of the first group of battery cells 501 in Fig. 2A and each of the second group of battery cells 502 in Fig. Each of the 2A battery cells can contain one battery cell. For example, the first group of battery cells 501 can contain a plurality of battery cells arranged in a predetermined number of battery cells along each of the first direction (X-axis direction) and the second direction (Y-axis direction). The second group of battery cells 502 can contain a plurality of battery cells arranged in a predetermined number of battery cells along each of the first direction (X-axis direction) and the second direction (Y-axis direction). However, this is only an example, and the predetermined number of the plurality of battery cells arranged in each of the first group of battery cells 501 in Fig. 2A and the second group of battery cells 502 in Fig. The inclusion of 2A is not limited to this and can be implemented in different numbers.

[0107] In one embodiment, the description applies to Fig. 2A equally for Fig. 2B.

[0108] Fig. Figure 3 represents a battery assembly as described in the present disclosure, viewed from one direction.

[0109] More precisely, it Fig. 3 the battery assembly 100 of Fig. 1A, as seen along the third axis direction (Z-axis direction). To simplify the explanation, some components of battery assembly 100 have been omitted from the illustration.

[0110] A thermal insulation film 320 can be attached to the cell housing of each of the multitude of battery cells 200.

[0111] For example, the thermal insulation film 320 can be attached to a surface of the cell casing of the first group of battery cells 501, where, with reference to Fig. 6, a vent hole 610 is formed. The thermal insulation film 320 cannot be attached to a surface of the cell casing of the first group of battery cells 501 where no vent hole is formed.

[0112] For example, the second group of battery cells 502 can have a thermal insulation film 320 attached to the surface of the cell casing where the vent hole is formed. The second group of battery cells 502 can have a thermal insulation film 320 attached to the surface of the cell casing where, with reference to Fig. 6, the vent hole 630 is not formed, do not have.

[0113] The thermal insulation film 320, which is attached to the first group of battery cells 501, can form a slot 320a to allow gas or heat emitted by the first group of battery cells 501 to be released to the outside. For example, the shape of the slot can be adapted to the Fig. The form shown in point 3 may be limited as long as gas or heat can be released to the outside.

[0114] The thermal insulation foil 320, which is attached to the second group of battery cells 502, can form a slot 320a to allow gas or heat emitted by the second group of battery cells 502 to be released to the outside.

[0115] The slot 320a can be formed in a position that corresponds to the vent holes 610, 630.

[0116] Fig. Figure 4 represents a battery assembly according to the present disclosure.

[0117] More precisely, Fig. 4 a representation of battery assembly 100 of Fig. 1A according to the present disclosure, wherein some components (e.g. the electrical insulating element 105) are omitted.

[0118] Referring to Fig. 3 and Fig. 4 includes the first group of battery cells 501 in one embodiment a first battery cell 201, a second battery cell 202 which is stacked relative to the first battery cell 201 in a first direction (X-axis direction) and positioned adjacent to the first battery cell 201, a third battery cell 203 which is stacked relative to the first battery cell 201 in a second direction (Y-axis direction) and arranged adjacent to the first battery cell 201, and a fourth battery cell 204 which is stacked relative to the third battery cell 203 in the first direction (X-axis direction) and arranged adjacent to the third battery cell 203.

[0119] In one embodiment, the first conductor tab sections 202a of the first polarity of the first battery cell 201 and the first conductor tab sections 202a of the first polarity of the second battery cell 202 can be connected to each other via a busbar 310. This means that adjacent first conductor tab sections 202a of the same first polarity can be connected in parallel via the busbar 310.

[0120] In one embodiment, the second conductor tab sections 202b of the second polarity of the third battery cell 203 and the second conductor tab sections 202b of the second polarity of the fourth battery cell 204 can be connected to each other via the busbar 310. This means that adjacent second conductor tab sections 202b of the same second polarity can be connected in parallel via the busbar 310.

[0121] In one embodiment, the second conductor tab sections 202b of the second polarity of the first battery cell 201 and the first conductor tab sections 202a of the first polarity of the third battery cell 203 can be connected to each other via the busbar 310. In one embodiment, the second conductor tab sections 202b of the second polarity of the second battery cell 202 and the first conductor tab sections 202a of the first polarity of the fourth battery cell 204 can be connected to each other via the busbar 310. In one embodiment, the second conductor tab sections 202b of the second polarity of the first battery cell 201 and the second conductor tab sections 202b of the second polarity of the second battery cell 202 can be connected to each other via the busbar 310.In one embodiment, the second conductor tab sections 202b of the second polarity of the second battery cell 202 and the first conductor tab sections 202a of the first polarity of the fourth battery cell 204 can be connected to each other via the busbar 310.

[0122] In one embodiment, the first busbar and the cooling plate 110 arranged on one side of the first group of battery cells 501 can be welded together, and the second busbar and the cooling plate arranged between the first group of battery cells 501 and the second group of battery cells 502 can be welded together.

[0123] For example, the busbar 310 connected to the first conductor lug section 202a of the first battery cell 201 and the first conductor lug section 202a of the second battery cell 202 can be connected to a cooling plate 110 located on one side of the first group of battery cells 501. In this case, the busbar 310 can be welded to the cooling plate 110 located on one side of the first group of battery cells 501.

[0124] In one embodiment, the busbar 310, connected to the second conductor tab section 202b of the third battery cell 203 and the second conductor tab section 202b of the fourth battery cell 204, can be connected to the cooling plate 110, which is positioned between the first group of battery cells 501 and the second group of battery cells 502. In this case, the busbar 310 can be welded to the cooling plate 110, which is positioned between the first group of battery cells 501 and the second group of battery cells 502.

[0125] In one embodiment, the second group of battery cells 502 includes the fifth battery cell 205, a sixth battery cell 206, which is stacked relative to the fifth battery cell 205 in a first direction (X-axis direction) and positioned adjacent to the fifth battery cell 205, a seventh battery cell 207, which is stacked relative to the fifth battery cell 205 in a second direction (Y-axis direction) and positioned adjacent to the fifth battery cell 205, and an eighth battery cell 208, which is stacked relative to the seventh battery cell 207 in the first direction (X-axis direction) and positioned adjacent to the seventh battery cell 207.

[0126] In one embodiment, the first conductor tab section 202a of the first polarity of the fifth battery cell 205 and the first conductor tab section 202a of the first polarity of the sixth battery cell 206 can be connected to each other via the busbar 310.

[0127] In one embodiment, the second conductor tab section 202b of the second polarity of the seventh battery cell 207 and the second conductor tab section 202b of the second polarity of the eighth battery cell 208 can be connected to each other via the busbar 310.

[0128] In one embodiment, the second conductor tab section 202b of the second polarity of the fifth battery cell 205 and the first conductor tab section 202a of the first polarity of the seventh battery cell 207 can be connected to each other via the busbar 310. In one embodiment, the second conductor tab section 202b of the second polarity of the sixth battery cell 206 and the first conductor tab section 202a of the first polarity of the eighth battery cell 208 can be connected to each other via the busbar 310. In one embodiment, the second conductor tab section 202b of the second polarity of the fifth battery cell 205 and the second conductor tab section 202b of the second polarity of the sixth battery cell 206 can be connected to each other via the busbar 310.In one embodiment, the second conductor tab section 202b of the second polarity of the seventh battery cell 207 and the first conductor tab section 202a of the first polarity of the eighth battery cell 208 can be connected to each other via the busbar 310. In another embodiment, the busbar 310, which is connected to the first conductor tab section 202a of the fifth battery cell 205 and the first conductor tab section 202a of the sixth battery cell 206, can be connected to the cooling plate 110 located between the first group of battery cells 501 and the second group of battery cells 502. In this case, the busbar 310 can be welded to the cooling plate 110, which is positioned between the first group of battery cells 501 and the second group of battery cells 502.

[0129] In one embodiment, the busbar 310, connected to the second conductor tab section 202b of the seventh battery cell 207 and the second conductor tab section 202b of the eighth battery cell 208, can be connected to a cooling plate 110 positioned on the opposite side of the second group of battery cells 502. In this case, the busbar 310 can be welded to the cooling plate 110 positioned on the opposite side of the second group of battery cells 502.

[0130] Fig. 5A represents a battery assembly as shown in the present disclosure, as seen from one direction.

[0131] More precisely, it shows Fig. 5A a section of the in Fig. 4 Battery assembly 100 shown, as seen along the Y-axis.

[0132] The array of battery cells 200 can comprise a first group of battery cells 501, whose conductor tab sections 202a, 202b are oriented towards the upper housing 104a, and a second group of battery cells 502, whose conductor tab sections 202a, 202b face the lower housing 104b. The first group of battery cells 501 and the second group of battery cells 502 can be arranged alternately within the receiving space.

[0133] Protective elements 220 can be arranged between the plurality of battery cells contained in the first group of battery cells 501 and between the plurality of battery cells contained in the second group of battery cells 502.

[0134] The conductor tab sections of adjacent battery cells within the first group of battery cells 501 can be connected to each other via a busbar 310. For example, the conductor tabs 202b of adjacent battery cells within the first group of battery cells 501 that have the same polarity can be connected to each other via the busbar 310. The busbar 310 can be welded to each conductor tab section 202b.

[0135] The conductor tab sections of adjacent battery cells in the second group of battery cells 502 can be connected to each other via the busbar 310. For example, the conductor tab sections 202b of adjacent battery cells in the second group of battery cells 502, which have the same polarity, can be connected to each other via the busbar 310. The busbar 310 can be welded to each conductor tab section 202b.

[0136] The cooling plate 110 can be connected to the busbar 310. For example, the cooling plate 110 can be welded to the busbar 310.

[0137] The cooling plate 110 can be supplied in multiple quantities. For example, the multiple cooling plates 110 can include a first cooling plate 110a, a second cooling plate 110b, and a third cooling plate 110c.

[0138] One end of the first cooling plate 110a can be connected via busbar 310 to the conductor tab section 202b of an adjacent battery cell within the first group of battery cells 501 that have the same polarity. The other end of the first cooling plate 110a cannot be connected to the conductor tab sections of the second group of battery cells 502 adjacent to the first group of battery cells 501. For example, one end of the first cooling plate 110a can be connected via busbar 310 to the conductor tab sections 202b of the third battery cell 203 or the fourth battery cell 204. The other end of the first cooling plate 110a cannot be connected to the conductor tab sections 202b of the seventh battery cell 207 or the eighth battery cell 208 contained in the second group of battery cells 502.

[0139] One end of the second cooling plate 110b can be connected via the busbar 310 to the conductor tab sections 202b of adjacent battery cells within the second group of battery cells 502 that have the same polarity. For example, one end of the second cooling plate 110b can be connected via the busbar 310 to the conductor tab sections 202b of the seventh battery cell 207 or the eighth battery cell 208. The other end of the second cooling plate 110b cannot be connected to the conductor tab sections of the first group of battery cells 501 adjacent to the second group of battery cells 502.

[0140] Fig. Figure 5B represents a battery assembly as shown in the present disclosure, as seen from one direction.

[0141] More precisely, it shows Fig. 5B a section of the in Fig. 4 shows battery assembly 100 as seen along the -Y-axis. The -Y-axis can represent an axis that is symmetrical about the origin relative to the Y-axis.

[0142] The cooling plates 110 can be supplied in multiples. For example, the multiple cooling plates 110 can include a first cooling plate 110a, a second cooling plate 110b, and a third cooling plate 110c.

[0143] One end of the first cooling plate 110a can be connected via busbar 310 to the conductor tab section 202a of an adjacent battery cell from the first group of battery cells 501, which has the same polarity. The other end of the first cooling plate 110a cannot be connected to the conductor tab section of the second group of battery cells 502 adjacent to the first group of battery cells 501. For example, one end of the first cooling plate 110a can be connected via busbar 310 to the conductor tab sections 202a of the first battery cell 201 and the second battery cell 202, respectively. The other end of the first cooling plate 110a cannot be connected to the conductor tab sections 202a of the fifth battery cell 205 and the sixth battery cell 206, which are contained in the second group of battery cells 502.

[0144] One end of the second cooling plate 110b can be connected via the busbar 310 to the conductor tab sections 202a of adjacent battery cells within the second group of battery cells 502 that have the same polarity. For example, one end of the second cooling plate 110b can be connected via the busbar 310 to the conductor tab sections 202a of the fifth battery cell 205 or the sixth battery cell 206. The other end of the second cooling plate 110b cannot be connected to the conductor tab sections of the first group of battery cells 501 adjacent to the second group of battery cells 502.

[0145] Fig. Figure 6 represents a battery assembly as shown in the present disclosure, as seen from one direction.

[0146] Each of the multiple battery cells contained in the first group of battery cells 501 can have a vent hole 610. The first group of battery cells 501 can have a thermal insulation film 320 attached to it, with a slot 320a formed therein. The slot 320a can be formed in a position corresponding to the vent hole 610.

[0147] Gas or heat 620 emitted from the vent hole 610 of the first group of battery cells 501 can be discharged through the vent hole 610 and the slot 320a into the first ejection passage. The first ejection passage can be located in the space between the receiving chamber for the array of battery cells 200 and the upper housing 104a. Alternatively, the first ejection passage can be located in the space between the receiving chamber for the array of battery cells 200 and the upper housing 104a. The first ejection passage can be connected to the outside of the array of battery cells 200.

[0148] Each of the multiple battery cells contained in the second group of battery cells 502 can have a vent hole 630. The second group of battery cells 502 can have a thermal insulation film 320 attached to it, with a slot 320a formed therein. Gas or heat 640 released from the vent hole 630 can be released through the vent hole 630 and the slot 320a into the second ejection passage. The second ejection passage can be formed in the space between the receiving space for the multiple battery cells 200 and the lower housing 104b. Alternatively, the second ejection passage can be the space between the receiving space for the multiple battery cells 200 and the lower housing 104b. The second ejection passage can be connected to the outside of the multiple battery cells 200.

[0149] Fig. Figure 7 represents a battery assembly as shown in the present disclosure, as seen from one direction.

[0150] More precisely, it shows Fig. 7 one along the in Fig. 4 C-C' section shown, cut section of the XY plane.

[0151] Busbar 310 can be connected to each conductor lug section 202a, 202b of the first group of battery cells 501. The second conductor lug section 202b of the second battery cell 202, which is contained in the first group of battery cells 501, and the first conductor lug section 202a of the fourth battery cell 204 can be connected to each other via busbar 310.

[0152] Gas or heat 700 emitted from the vent hole 610 of the battery cell 501 in the first group of battery cells can be discharged through the vent hole 610 and the slot 320a into the first ejection passage.

[0153] The first ejection passage can be formed in the space between the receiving chamber for the multitude of battery cells 200 and the upper housing 104a. The first ejection passage can be recessed in the upper housing 104a in a direction away from the receiving chamber. Alternatively, the first ejection passage can be the space between the receiving chamber for the multitude of battery cells 200 and the upper housing 104a.

[0154] A busbar 310 can be connected to each conductor lug section 202a, 202b of the second group of battery cells 502. Although not shown, the second ejection passage can be formed in the space between the receiving chamber for the multitude of battery cells 200 and the lower housing 104b. The second ejection passage can be recessed in the lower housing 104b in a direction away from the receiving chamber. Alternatively, the second ejection passage can represent the space between the receiving chamber for the multitude of battery cells 200 and the lower housing 104b.

[0155] Fig. Figure 8 represents a battery assembly according to the present disclosure.

[0156] Specifically, to simplify the description Fig. 8 shown, with some components of the in Fig. Battery assembly 100 shown in 1A has been omitted.

[0157] The battery assembly 100 according to the present disclosure can include a first cooling channel 250a and a second cooling channel 250b connected to the cooling plate 110.

[0158] The cooling plate 110 can be formed in a plate shape. The cooling plate 110 can include fastening elements 810a, 810b which are configured to extend from a second direction (Y-axis direction).

[0159] The first cooling channel 250a may contain an insertion hole into which the fastening element 810a may be inserted. The fastening element 810a may have a protruding shape to allow insertion into the insertion hole.

[0160] The second cooling channel 250b may contain an insertion hole into which the fastener 810b may be inserted. The fastener 810b may have a protruding shape to allow insertion into the insertion hole.

[0161] The first cooling channel 250a and the second cooling channel 250b can be channels through which a cooling medium or cooling water flows.

[0162] The first cooling channel 250a can be a channel through which a cooling medium flows to be introduced into the cooling plate 110 for cooling a plurality of battery cells 200. The second cooling channel 250b can be a channel through which the cooling medium flows after its temperature has risen due to cooling the plurality of battery cells 200 from the cooling plate 110. The first cooling channel 250a can be connected to an inlet that supplies the cooling medium. The second cooling channel 250b can be connected to an outlet that discharges the cooling medium.

[0163] Alternatively, the second cooling channel 250b can be a channel through which a cooling medium flows into the cooling plate 110 to cool the plurality of battery cells 200. The first cooling channel 250a can be a channel through which the cooling medium flows after its temperature has risen due to cooling of a plurality of battery cells 200 by the cooling plate 110. Alternatively, the first cooling channel 250a can be connected to an outlet that discharges the cooling medium. The second cooling channel 250b can be connected to an inlet that supplies the cooling medium.

[0164] To simplify the explanation, the first cooling channel 250a is described as representing a channel through which a cooling medium flows into the cooling plate 110, and the second cooling channel 250b is described as representing a channel through which a cooling medium flows out of the cooling plate 110.

[0165] Fig. Figure 9 represents a first cooling channel and a cooling plate according to the present disclosure.

[0166] More precisely, it shows Fig. 9 an XY plane that the in Fig. Battery assembly 100 shown at DD' cuts.

[0167] In one embodiment, the cooling plate 110 can be connected to the first cooling channel 250a. In another embodiment, the cooling plate 110 can be connected to the first cooling channel 250a via an O-ring 900.

[0168] A cooling medium or cooling water 910 can flow through the first cooling channel 250a. The cooling plate 110 can include an openable area 940. The cooling plate 110 can allow the cooling medium 910 to flow through the open area 940 into the interior of the cooling plate 110.

[0169] The cooling plate 110 can close the open area 940 as soon as the cooling medium 910 flows into the interior of the cooling plate 110 and a certain amount of the cooling medium has been introduced.

[0170] The cooling plate 110 can cool the battery cell 200 in contact with the cooling plate 110 by means of the cooling medium 910 flowing into the interior of the cooling plate 110.

[0171] Fig. Figure 10 represents a second cooling channel and a cooling plate according to the present disclosure.

[0172] More precisely, it shows Fig. 10 an XY plane that is in Fig. Battery assembly 8 shown cuts along EE'.

[0173] In one embodiment, the cooling plate 110 can be connected to the second cooling channel 250b. In another embodiment, the cooling plate 110 can be connected to the second cooling channel 250b via an O-ring.

[0174] A cooling medium 1010, whose temperature has risen after cooling a large number of battery cells, can flow through the second cooling channel 250b. The cooling plate 110 can include an openable area 1040. The cooling plate 110 can discharge the heated cooling medium 1010 from the cooling plate 110 through the open area 1040 to the second cooling channel 250b.

[0175] Some of the aspects of this revelation are as follows:

[0176] Aspect 1: Battery assembly comprising: a receiving housing forming an internal receiving space; and a plurality of battery cells comprising a cell housing, an electrode assembly arranged within the cell housing, and conductor tab sections electrically connected to the electrode assembly and projecting outwards from the cell housing; wherein the plurality of battery cells comprises a first group of battery cells containing the conductor tab sections projecting from one side of the cell housing and a second group of battery cells containing the conductor tab sections projecting from the other side of the cell housing; wherein the first group of battery cells and the second group of battery cells are arranged alternately in the receiving space;and wherein the battery assembly further comprises a first ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections of the first group of battery cells face the receiving housing, and a second ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections of the second group of battery cells face the receiving housing.

[0177] Aspect 2: Battery assembly according to Aspect 1, which further includes: cooling plates arranged between the first group of battery cells and the second group of battery cells, on one side of the first group of battery cells and on the other side of the second group of battery cells.

[0178] Aspect 3: Battery assembly according to one of the preceding aspects, further comprising: a first busbar connecting the cooling plate arranged on one side of the first group of battery cells and the conductor tab sections of the first group of battery cells; and a second busbar connecting the cooling plate arranged between the first group of battery cells and the second group of battery cells and the conductor tab sections of the second group of battery cells.

[0179] Aspect 4: Battery assembly according to one of the preceding aspects, wherein the first busbar and the cooling plate arranged on one side of the first group of battery cells are welded together, and the second busbar and the cooling plate arranged between the first group of battery cells and the second group of battery cells are welded together.

[0180] Aspect 5: Battery assembly according to one of the preceding aspects, further comprising: an electrical insulating element attached to each of the first busbar and the second busbar.

[0181] Aspect 6: Battery assembly according to one of the preceding aspects, wherein the electrical insulating element comprises one or a combination of mica, glass fiber, ceramic fiber.

[0182] Aspect 7: Battery assembly according to one of the preceding aspects, wherein the first group of battery cells includes a first vent hole to release gas generated within the first group of battery cells.

[0183] Aspect 8: Battery assembly according to one of the preceding aspects, further comprising: a first thermal insulation film attached to the surface of the cell casing of the first group of battery cells, in which the first vent hole is formed.

[0184] Aspect 9: Battery assembly according to one of the preceding aspects, wherein the first thermal insulation film further comprising a first slit formed in a position corresponding to the first vent hole to allow gas emitted from the first vent hole to be vented to the outside.

[0185] Aspect 10: Battery assembly according to one of the preceding aspects, wherein the second group of battery cells includes a second vent hole to allow gas generated within the second group of battery cells to escape.

[0186] Aspect 11: Battery assembly according to one of the preceding aspects, further comprising: a second thermal insulation film attached to the surface of the cell casing of the second group of battery cells in which the second vent hole is formed.

[0187] Aspect 12: Battery assembly according to one of the preceding aspects, wherein the second thermal insulation film further includes a second slot formed in a position corresponding to the second vent hole to allow gas released from the second vent hole to be released to the outside.

[0188] Aspect 13: Battery assembly according to one of the preceding aspects, wherein each of the first group of battery cells and the second group of battery cells contains the plurality of battery cells, and wherein the battery assembly further comprises a first plate-shaped protective element arranged between the plurality of battery cells contained in the first group of battery cells; and a second plate-shaped protective element arranged between the plurality of battery cells contained in the second group of battery cells.

[0189] The present disclosure can be implemented in various modified forms and is not limited to the embodiments described above. Therefore, if a modified embodiment contains the components of the claims of the present disclosure, it should be considered to be within the scope of protection of the present disclosure.

[0190] The present disclosure relates to a battery assembly. The battery assembly according to one embodiment of the present disclosure may include: a receiving housing; and a plurality of battery cells, and conductor tab sections electrically connected to an electrode assembly; wherein the plurality of battery cells may include a first group of battery cells containing the conductor tab sections projecting from one side of a cell housing, and a second group of battery cells containing the conductor tab sections projecting from the other side of the cell housing; and wherein the battery assembly may further include a first ejection passage and a second ejection passage.

Claims

[1] Battery assembly (100), comprising: a recording housing that forms an internal recording space; and a plurality of battery cells (200) comprising a cell housing, an electrode assembly arranged within the cell housing, and conductor tab sections (202a, 202b) electrically connected to the electrode assembly and projecting outwards from the cell housing; wherein the plurality of battery cells (200) comprises a first group of battery cells (501) containing the conductor tab sections (202a, 202b) projecting from one side of the cell housing, and a second group of battery cells (502) containing the conductor tab sections (202a, 202b) projecting from the other side of the cell housing; wherein the first group of battery cells (501) and the second group of battery cells (502) are arranged alternately in the receiving space; and wherein the battery assembly (100, 180) further comprises a first ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections (202a, 202b) of the first group of battery cells (501) face the receiving housing, and a second ejection passage formed between the receiving housing and the receiving space in an area where the conductor tab sections (202a, 202b) of the second group of battery cells (502) face the receiving housing. [2] Battery assembly (100) according to claim 1, further comprising: Cooling plates (110) are arranged between the first group of battery cells (501) and the second group of battery cells (502), on one side of the first group of battery cells (501) and on the other side of the second group of battery cells (502). [3] Battery assembly (100) according to one of the preceding claims, further comprising: a first busbar connecting the cooling plate (110) arranged on one side of the first group of battery cells (501) and the conductor tab sections (202a, 202b) of the first group of battery cells (501); and a second busbar connecting the cooling plate (110) arranged between the first group of battery cells (501) and the second group of battery cells (502) and the conductor tab sections (202a, 202b) of the second group of battery cells (502). [4] Battery assembly (100) according to one of the preceding claims, wherein the first busbar and the cooling plate (110) arranged on one side of the first group of battery cells (501) are welded together, and the second busbar and the cooling plate (110) arranged between the first group of battery cells (501) and the second group of battery cells (502) are welded together. [5] Battery assembly (100) according to any one of the preceding claims, further comprising: an electrical insulating element (105) which is attached to each of the first busbar and the second busbar. [6] Battery assembly (100) according to one of the preceding claims, wherein the electrical insulating element (105) comprises one or a combination of mica, glass fiber, ceramic fiber. [7] Battery assembly (100) according to one of the preceding claims, wherein the first group of battery cells (501) includes a first vent hole (610) to release gas generated within the first group of battery cells (501). [8] Battery assembly (100) according to any one of the preceding claims, further comprising: a first thermal insulation film (320) attached to the surface of the cell casing of the first group of battery cells (501) in which the first vent hole is formed. [9] Battery assembly (100) according to one of the preceding claims, wherein the first thermal insulation film (320) further comprises a first slit formed in a position corresponding to the first vent hole to allow gas released from the first vent hole to be released to the outside. [10] Battery assembly (100) according to one of the preceding claims, wherein the second group of battery cells (502) includes a second vent hole to release gas generated within the second group of battery cells (502). [11] Battery assembly (100) according to one of the preceding claims, further comprising: a second thermal insulation film (320) which is attached to the surface of the cell casing of the second group of battery cells (502) in which the second vent hole is formed. [12] Battery assembly (100) according to one of the preceding claims, wherein the second thermal insulation film (320) further comprises a second slot formed in a position corresponding to the second vent hole to allow gas released from the second vent hole to be released to the outside. [13] Battery assembly (100) according to one of the preceding claims, wherein each of the first group of battery cells (501) and the second group of battery cells (502) contains the plurality of battery cells (200), and wherein the battery assembly (100, 180) further comprises a first plate-shaped protective element arranged between the plurality of battery cells (200) contained in the first group of battery cells (501); and a second plate-shaped protective element (220) arranged between the plurality of battery cells (200) contained in the second group of battery cells (502).

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