Battery assembly

Abstract

The invention relates to a battery assembly, and the battery assembly comprises a plurality of battery cells which are in a cylindrical shape; the accommodating part is used for forming an arrangement space for accommodating the plurality of battery cells; the accommodating shell comprises an accommodating space used for accommodating the plurality of battery cells and the accommodating part; an accommodation bottom surface forming a bottom surface of the accommodation space and including a communication hole; an exhaust space provided across the accommodating bottom surface; and a communication hole formed in the accommodating bottom surface and communicating the accommodating space and the exhaust space, the accommodating member including: a support portion forming a bottom surface of the accommodating member and supported by the accommodating bottom surface; a curved surface portion extending from the support portion toward the plurality of cells and formed as a curved surface corresponding to a portion of the outer peripheral surface of each of the plurality of cells so as to face the plurality of cells; the through hole penetrates through the supporting part at the position corresponding to the communicating hole.

Description

Technical Field

[0001] This disclosure relates to a battery module. More specifically, it relates to a battery module with improved thermal stability and manufacturing efficiency. Background Technology

[0002] In battery manufacturing processes that use cylindrical cells to create battery packs, individual cylindrical cells are placed inside the battery pack, rather than grouping multiple cylindrical cells together. Therefore, the manufacturing process is more complex and reduces the efficiency of battery pack production, necessitating improvements.

[0003] In addition, conventional battery packs made using cylindrical cells only cool the cylindrical cells from the bottom, which results in the ineffective cooling of the cylindrical cells. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] According to one aspect of this disclosure, the technical problem to be solved is to provide a battery pack including a structure capable of suppressing heat transfer between cylindrical cells.

[0006] According to another aspect of this disclosure, the technical problem to be solved is to reduce the temperature variation of the cylindrical cells housed in the battery pack.

[0007] According to another aspect of this disclosure, the technical problem to be solved is to effectively cool the cylindrical cells housed in the battery pack.

[0008] According to another aspect of this disclosure, the technical problem to be solved is to modularize cylindrical battery cells.

[0009] According to another aspect of this disclosure, the technical problem to be solved is to simplify the manufacturing process of battery cells.

[0010] According to another aspect of this disclosure, the technical problem to be solved is to improve the manufacturing efficiency of battery cells.

[0011] On the other hand, this disclosure can be widely applied to the fields of electric vehicles, battery charging stations, energy storage systems (ESS), and other green technologies that utilize batteries, such as photovoltaics and wind power. Furthermore, this disclosure can be used for eco-friendly mobility, including electric vehicles and hybrid vehicles, to prevent climate change by suppressing air pollution and greenhouse gas emissions.

[0012] (II) Technical Solution

[0013] The battery assembly according to this disclosure may include: a plurality of battery cells, the battery cells being cylindrical; a receiving member forming a space for receiving the plurality of battery cells; and a receiving housing, the receiving housing including: a receiving space for receiving the plurality of battery cells and the receiving member; a receiving bottom surface forming the bottom surface of the receiving space and including a connecting hole; an exhaust space disposed across the receiving bottom surface; and a connecting hole formed on the receiving bottom surface and communicating the receiving space with the exhaust space, the receiving member including: a support portion forming the bottom surface of the receiving member and supported by the receiving bottom surface; a curved portion extending from the support portion toward the plurality of battery cells and formed as a curved surface corresponding to a portion of the outer peripheral surface of each of the plurality of battery cells, so as to face the plurality of battery cells; and a through hole penetrating the support portion at a position corresponding to the connecting hole.

[0014] In one embodiment, the curved surface may be wavy.

[0015] In addition, the battery assembly according to this disclosure may further include a heat dissipation section disposed between the curved surface and the plurality of battery cells.

[0016] In one embodiment, the curved surface and the support portion may be coated with an insulating material.

[0017] In one embodiment, the battery assembly according to this disclosure may include: a first body portion and a second body portion disposed across the plurality of battery cells; the support portion includes: a first bottom extending from one end of the first body portion toward the second body portion; a first recess, a portion of an edge of the first bottom portion recessed in a direction away from the second body portion; a second bottom extending from one end of the second body portion toward the first body portion; and a second recess, a portion of an edge of the second bottom portion recessed in a direction away from the first body portion at a position corresponding to the first recess, wherein when the first bottom portion and the second bottom portion are connected, the first recess and the second recess are connected to each other to form the through hole.

[0018] In one embodiment, the first body portion, the first bottom portion, the second body portion, and the second bottom portion may be formed of the same material.

[0019] In one embodiment, the first body portion, the first bottom portion, the second body portion, and the second bottom portion may be formed of different materials.

[0020] In one embodiment, the curved surface may include: a first body portion and a second body portion, the first body portion and the second body portion being disposed apart from the plurality of battery cells, and the support portion extending from one end of the first body portion and connected to one end of the second body portion.

[0021] In one embodiment, multiple through holes and multiple connecting holes may be provided, and the multiple through holes and multiple connecting holes may be provided in a one-to-one correspondence.

[0022] In one embodiment, the virtual central axis of any one of the plurality of battery cells can pass through any one of the through holes corresponding to that battery cell.

[0023] In one embodiment, the through-hole may extend along the alignment direction of the plurality of cells and overlap with the connecting hole.

[0024] In one embodiment, the curved surface can be arranged in a zigzag pattern, dividing the arrangement space into multiple spaces, so that the multiple battery cells are respectively housed in the multiple spaces through the curved surface.

[0025] In one embodiment, the receiving member may further include: a side portion extending from the periphery of the support portion and enclosing at least a portion of the plurality of battery cells.

[0026] In one embodiment, the battery assembly according to this disclosure may further include: a cooling channel disposed on one of the two sides of the receiving bottom surface, and a refrigerant for cooling the plurality of battery cells moving in the cooling channel.

[0027] In one embodiment, when any one of the plurality of battery cells generates gas, at least a portion of the gas can move to the exhaust space through the through hole and the connecting hole.

[0028] In one embodiment, the housing may include an exhaust port that connects the exhaust space to the outside.

[0029] In one embodiment, the housing may include a partition separating the exhaust space.

[0030] The battery assembly according to this disclosure may include: a plurality of stacked bodies, the stacked bodies including: a support portion forming a bottom surface for accommodating a plurality of battery cells; and a curved portion extending from the support portion toward the plurality of battery cells and formed in a wave shape corresponding to a portion of the outer peripheral surface of each of the plurality of battery cells, so as to face the plurality of battery cells; a busbar electrically connected to the plurality of battery cells; a housing forming a receiving space for accommodating the plurality of stacked bodies; and a partition portion separating the receiving space.

[0031] (III) Beneficial Effects

[0032] According to one embodiment of this disclosure, a battery pack including a structure capable of suppressing heat transfer between cylindrical cells can be provided.

[0033] According to another embodiment of this disclosure, temperature variations in cylindrical cells housed in a battery pack can be reduced.

[0034] According to yet another embodiment of this disclosure, cylindrical cells housed in a battery pack can be effectively cooled.

[0035] According to yet another embodiment of this disclosure, cylindrical battery cells can be modularized.

[0036] According to yet another embodiment of this disclosure, the manufacturing process of battery cells can be simplified.

[0037] According to yet another embodiment of this disclosure, the manufacturing efficiency of battery cells can be improved. Attached Figure Description

[0038] Figure 1 This is an example of a battery assembly according to this disclosure.

[0039] Figure 2 This is an exploded view of an example of a stacked body according to this disclosure.

[0040] Figure 3a This is a diagram showing an example of the housing component as viewed from above according to this disclosure. Figure 3b This is a diagram showing another example of the housing component as viewed from above according to this disclosure.

[0041] Figure 4a This is a diagram showing an example of a stacked body according to this disclosure, viewed from the side. Figure 4b This is a diagram showing another example of a stacked body according to this disclosure, viewed from the side. Figure 4c This is a diagram showing another example of a stacked body according to this disclosure, viewed from the side.

[0042] Figure 5a This is a perspective view of yet another example of a receiving component according to the present disclosure. Figure 5b This is a diagram showing another example of a stacked structure according to this disclosure, viewed from above.

[0043] Figure 6a This is a perspective view of yet another example of a receiving component according to the present disclosure. Figure 6b Viewed from above Figure 6a A diagram of the housing components.

[0044] Figure 7 A cross-section of a battery assembly according to this disclosure is shown.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100: Battery cell; 110: Terminal section

[0047] 200: Receiving component 230: Curved surface

[0048] 230a: First main body section; 230b: Second main body section

[0049] 231: First component 235: Second component

[0050] 240: Heat dissipation section 241: First heat dissipation section

[0051] 245: Second heat dissipation section; 250: Installation space

[0052] 271: Support section; 271a: First bottom

[0053] 271b: Second bottom part; 272: Side part

[0054] 275: Through hole; 275a: First recessed portion

[0055] 275b: Second recessed portion; 290: Busbar.

[0056] 300: Housing housing; 310: Housing cover

[0057] 330: Divider section; 331: First frame

[0058] 335: Second Frame; 340: Electrical Space

[0059] 345: Control unit; 349: Connection unit

[0060] 350: Housing space; 370: Cooling flow channel

[0061] 375: Connecting hole; 390: Receiving body.

[0062] 391: Accommodation base; 395: Exhaust space

[0063] 398: Discharge outlet; 399: Partition plate

[0064] 500: Stacked assembly; 1000: Battery module Detailed Implementation

[0065] The preferred embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The configurations or control methods of the apparatus described below are merely illustrative of embodiments of the present disclosure and are not intended to limit the scope of the present disclosure, and the same reference numerals used throughout the specification denote the same components.

[0066] The specific terminology used in this specification is for illustrative purposes only and is not intended to limit the embodiments shown.

[0067] In this manual, "battery," "secondary battery," and "cell" all refer to cells that can be charged and discharged.

[0068] In this specification, "battery assembly" may refer to a battery module, battery pack, or energy storage device that includes battery cells.

[0069] Figure 1 This is an example of a battery assembly according to this disclosure.

[0070] The battery assembly 1000 according to this disclosure may include: a stacking assembly 500 including a plurality of cylindrical cells 100 and a receiving member 200 for receiving the plurality of cells 100; and a receiving housing 300 forming a receiving space 350 for receiving the stacking assembly 500.

[0071] The stack 500 may include a plurality of the battery cells 100 and form a mounting space 250 for accommodating the plurality of battery cells 100 (see reference). Figure 2 ) containing component 200.

[0072] In the stack 500, the plurality of battery cells 100 can be arranged along a preset alignment direction.

[0073] The housing 300 may include a housing body 390 with one opening and a housing cover 310 attached to the housing body 390 to cover the opening.

[0074] The housing 300 may further include a partition 330 that separates the receiving space 350. The partition 330 may include: a first frame 331 that separates the receiving space 350 in a direction parallel to the alignment direction; and a second frame 335 that separates the receiving space 350 in a direction perpendicular to the alignment direction.

[0075] The housing 300 may further include an electrical space 340 formed separately from the housing space 350. The battery assembly 1000 according to this disclosure may house a control unit 345 for thermoelectric management of the plurality of battery cells 100 within the electrical space 340. The control unit 345 may be referred to as a Battery Management System (BMS). Additionally, the battery assembly 1000 according to this disclosure may further include a connection portion 349 for electrically connecting the plurality of battery cells 100 to an external source.

[0076] In this specification, for convenience, the direction in which the control unit 345 or the connecting part 349 is located is referred to as the front F, and the opposite direction is referred to as the rear R. However, this is just an example, and the positions of the control unit 345 and the connecting part 349 can be changed according to the design.

[0077] The housing 300 may further include a receiving bottom surface 391 forming the bottom surface of the receiving space 350. The receiving bottom surface 391 may support the plurality of battery cells 100 housed in the receiving space 350.

[0078] Additionally, the battery assembly 1000 according to this disclosure may further include an exhaust space 395 (see reference). Figure 7 The exhaust space 395 is opposite to the receiving space 350 across the receiving bottom surface 391. Additionally, the receiving housing 300 may include the receiving space 350 and the exhaust space 395.

[0079] The receiving bottom surface 391 is only the bottom surface of the receiving space 350, and the receiving body 390 may include the bottom surface of the receiving body 390 alone.

[0080] Therefore, the receiving space 350 can be formed between the receiving bottom surface 391 and the receiving cover 310, and the exhaust space 395 can be formed between the receiving bottom surface 391 and the bottom surface of the receiving body 390.

[0081] Additionally, the housing 300 may include an outlet 398 that connects the exhaust space 395 to the outside. The outlet 398 is normally closed by a rupture disc, but when the pressure in the exhaust space 395 reaches a predetermined pressure, the rupture disc breaks, thereby opening the outlet 398.

[0082] Figure 2 This is an exploded view of an example of a stacked body according to this disclosure.

[0083] The stack 500 may include a plurality of battery cells 100 and a receiving component 200 for accommodating the plurality of battery cells. In addition, the receiving component 200 may include a curved surface 230, which forms an internal space 250 for accommodating the plurality of battery cells 100.

[0084] The curved surface 230 can be a wave shape corresponding to the cylindrical battery cell 100. In this case, the receiving member 200 can more effectively accommodate the cylindrical battery cell 100, thereby minimizing the movement of the cylindrical battery cell 100 due to vibration or impact. In addition, the wave-shaped curved surface 230 can reduce unnecessary space waste.

[0085] Reference Figure 2 The diagram shows that the alignment direction of the plurality of cells 100 is in the X direction, but this is just an example and the alignment direction can be changed according to the design.

[0086] Reference Figure 1 and Figure 2 The housing component 200 can support the plurality of battery cells 100 and can perform the function of a heat transfer path for heat dissipation of the plurality of battery cells 100.

[0087] Therefore, the receiving component 200 can be formed of a thermally conductive material. For example, the receiving component 200 can be formed of a metallic material such as aluminum or steel, or a composite material.

[0088] Preferably, the thermal conductivity of the thermally conductive material can be greater than or equal to 50 W / m·K (watts per meter Kelvin).

[0089] As an example, the housing component 200 can be manufactured by die casting of aluminum or stamping of steel.

[0090] On the other hand, multiple stacks 500 can be provided. When the multiple stacks 500 are provided in the receiving space 350, the receiving member 200 can be coated with an insulating material for electrical insulation between them. That is, the curved surface 230 and the support portion 271 can be coated with an insulating material.

[0091] Alternatively, the receiving component 200 may be wrapped with an insulating adhesive sheet.

[0092] In addition, in order to maintain the heat transfer function of the housing component 200, an insulating coating material or adhesive sheet with a thermal conductivity greater than or equal to 0.5 W / m·K can be used.

[0093] Each of the multiple stacks 500 is a modular concept, and when housed in the housing 300, the stacks 500 can be used as an assembly unit. Therefore, compared to housing the multiple cells 100 individually in the housing space 350, assembly time can be relatively reduced and the manufacturing process simplified. Ultimately, the introduction of the stacks 500 can improve battery manufacturing efficiency.

[0094] On the other hand, when the plurality of stacked bodies 500 are arranged in the receiving space 350, any one of the stacked bodies 500 and another stacked body 500 adjacent to the other stacked body 500 can be arranged such that the concave and convex portions of the curved surface 230 alternate with each other. This is to minimize the generation of dead space caused by the shape of the curved surface 230.

[0095] Figure 3a This is a diagram showing an example of the housing component as viewed from above according to this disclosure. Figure 3b This is a diagram showing another example of the housing component as viewed from above according to this disclosure.

[0096] More specifically, Figure 3a and Figure 3b Showing from Figure 2 An example of the containment space 200 as viewed from the A-A' direction.

[0097] Reference Figure 1 As shown in Figure 3, the battery assembly 1000 according to this disclosure may include: a plurality of cylindrical battery cells 100; a receiving member 200 forming a mounting space 250 for receiving the plurality of battery cells 100; and a receiving housing 300, the receiving housing 300 including a receiving space 350 for receiving the plurality of battery cells 100 and the receiving member 200, a receiving bottom surface 391 forming the bottom surface of the receiving space 350 and including a connecting hole 375, and an exhaust space 395 disposed across the receiving bottom surface 391 (see Figure 3). Figure 7The receiving component 200 may include: a support portion 271, forming the bottom surface of the receiving component 200 and supported by the receiving bottom surface 391; a curved portion 230, extending from the support portion 271 toward the plurality of battery cells 100 and formed as a curved surface corresponding to a portion of the outer peripheral surface of each of the plurality of battery cells 100, so as to face the plurality of battery cells 100; and a through hole 275, penetrating the support portion 271 at a position corresponding to the through hole 375.

[0098] The curved surface 230 can be configured in a wave shape corresponding to a portion of the outer peripheral surface of the plurality of battery cells 100. Since the curved surface 230 receives and discharges the heat generated in the plurality of battery cells 100 to the outside through the outer peripheral surface of the plurality of battery cells 100, the area of ​​the curved surface 230 can be a size corresponding to more than 50% of the area of ​​the outer peripheral surface that can face the plurality of battery cells.

[0099] Therefore, the curved surface 230 can not only perform the heat transfer function through its large area, but can also be used as a blocking or protective component to delay the heat propagation between the plurality of cells 100 or between the stack 500.

[0100] Since the curved surface 230 extends from one or both edges of the support portion 271 and extends in the height direction (Z direction) of the housing 300, one or both edges of the support portion 271 can also be configured to correspond to the wave shape of the curved surface 230.

[0101] In order for the curved surface 230 to receive heat through the outer peripheral surfaces of the plurality of battery cells 100, the curved surface 230 needs to be in contact with the outer peripheral surfaces of the plurality of battery cells 100.

[0102] Therefore, the plurality of battery cells 100 can be press-fitted with the curved surface 230 and housed in the setting space 250.

[0103] Alternatively, the receiving component 200 may further include a heat dissipation portion 240 between the curved surface 230 and the plurality of battery cells 100 (see reference). Figure 4a The heat dissipation portion 240, acting as a thermal adhesive, can be injected in a liquid state between the curved surface portion 230 and the plurality of battery cells 100 and then cured. Therefore, the heat dissipation portion 240 can minimize any gaps that may occur between the curved surface portion 230 and the plurality of battery cells 100.

[0104] Reference Figure 3a The support portion 271 may include a through hole 275 extending through the support portion 271.

[0105] In one embodiment, the through holes 275 may be provided in multiple ways, and the multiple through holes 275 may be arranged along the alignment direction.

[0106] The plurality of through holes 275 can be configured to correspond one-to-one with the plurality of battery cells 100 and overlap with the plurality of battery cells 100.

[0107] In addition, multiple through holes 275 and multiple connecting holes 375 can be provided, and the multiple through holes 275 can be provided in a one-to-one correspondence with the multiple connecting holes 375.

[0108] That is, the plurality of battery cells 100, the plurality of through holes 275, and the plurality of connecting holes 375 can be arranged in an overlapping manner. In other words, the virtual central axis C of any battery cell 100 (refer to...) Figure 4a It can pass through any of the connecting holes 375 corresponding to any of the battery cells 100.

[0109] In addition, the virtual central axis C can pass through any of the through holes 275 corresponding to any of the battery cells 100.

[0110] More preferably, the virtual central axis C can pass through the center of any one of the connecting holes 375 and any one of the through holes 275.

[0111] Reference Figure 3b The through hole 275 can extend along the alignment direction of the plurality of cells 100 and overlap with the connecting hole 375.

[0112] In other words, the through hole 275 can be formed on the support portion 271 along the alignment direction, instead of providing multiple through holes 275.

[0113] Figure 3b The width of the through hole 275 along the Y direction is shown to be constant. However, unlike this, the width of the through hole 275 along the Y direction can vary according to the shape of the curved surface 230.

[0114] Figure 4a This is a diagram showing an example of a stacked body according to this disclosure, viewed from the side. Figure 4b This is a diagram showing another example of a stacked body according to this disclosure, viewed from the side. Figure 4c This is a diagram showing another example of a stacked body according to this disclosure, viewed from the side.

[0115] Reference Figures 4a to 4cAccording to this disclosure, the receiving component 200 may include a first main body portion 230a and a second main body portion 230b disposed across the plurality of battery cells 100. The support portion 271 may include: a first bottom portion 271a extending from one end of the first main body portion 230a toward the second main body portion 230b; a first recess portion 275a, wherein a portion of an edge of the first bottom portion 271a is recessed away from the second main body portion 230b; a second bottom portion 271b extending from one end of the second main body portion 230b toward the first main body portion 230a; and a second recess portion 275b, wherein at a position corresponding to the first recess portion 275a, a portion of an edge of the second bottom portion 271b is recessed away from the first main body portion 230a.

[0116] Therefore, the first main body portion 230a and the second main body portion 230b form the curved surface portion 230, and the first bottom portion 271a and the second bottom portion 271b form the support portion 271. Additionally, the first recessed portion 275a and the second recessed portion 275b can be connected to each other to form the through hole 275.

[0117] Reference Figure 4a and Figure 4b The first main body portion 230a and the first bottom portion 271a are collectively referred to as the first component 231, and the second main body portion 230b and the second bottom portion 271b are collectively referred to as the second component 235.

[0118] Reference Figure 4a The first component 231 and the second component 235 can be combined with each other to form the receiving component 200.

[0119] At this time, the first component 231 and the second component 235 can be formed of the same material. That is, the first main body portion 230a, the first bottom portion 271a, the second main body portion 230b, and the second bottom portion 271b can be formed of the same material. Preferably, when the first component 231 and the second component 235 are formed of the same material, the material of the first component 231 and the second component 235 can be a thermally conductive material.

[0120] On the other hand, the battery assembly 1000 according to this disclosure may further include a heat dissipation section 240 between the curved section 230 and the plurality of cells 100.

[0121] Reference Figures 4a to 4c The heat dissipation part 240 may include: a first heat dissipation part 241, which is injected and cured between the first main body part 230a and the plurality of battery cells 100; and a second heat dissipation part 242, which is injected and cured between the second main body part 230b and the plurality of battery cells 100.

[0122] Reference Figure 4b The first component 231 and the second component 235 may be formed of different materials. That is, the first main body 230a, the first bottom 271a, the second main body 230b, and the second bottom 271b may be formed of different materials.

[0123] As described above, the first component 231 and the second component 235 can not only perform heat transfer functions, but also perform heat delay functions in the event of thermal runaway. Therefore, either the first component 231 or the second component 235 can be formed of a thermally conductive material, and the other component can be formed of a fire-resistant (or flame-retardant) material.

[0124] As an example, the refractory (or flame-retardant) material may be any one or a combination of mica (MICA), glass fiber reinforced polymer (GFRP), and ceramic fiber. Alternatively, the refractory (or flame-retardant) material may be silica gel, alumina, or aerogel containing silica.

[0125] Reference Figure 4c The shapes of the first component 231 and the second component 235 may be different.

[0126] As an example, the curved surface 230 may include a first main body portion 230a and a second main body portion 230b disposed between the plurality of battery cells 100. The support portion 271 may extend from one end of the first main body portion 230a and connect to one end of the second main body portion 230b. That is, the first main body portion 230a and the support portion 271 may form the first component 231, and the second main body portion 230b may form the second component 235.

[0127] For example, if the first component 231 is formed of a thermally conductive material and the second component 235 is formed of a fire-resistant (or flame-retardant) material, then the support portion 271 does not need to be formed of a fire-resistant (or flame-retardant) material to prevent heat transfer. Therefore, for the thermal conductivity of the receiving component 200, the support portion 271 can be integrally formed with the first main body portion 230a.

[0128] On the other hand, either the first component 231 or the second component 235 can be removed as needed. For example, when either the first component 231 or the second component 235 is adjacent to the side of the housing 300 or the side of the partition 330, the heat transfer function and the heat propagation blocking function can be replaced by the side of the housing 300 or the side of the partition 330.

[0129] Figure 5a This is a perspective view of yet another example of a receiving component according to the present disclosure. Figure 5b This is a diagram showing another example of a stacked structure according to this disclosure, viewed from above.

[0130] Reference Figure 5a The receiving component 200 may include the support portion 271 and a curved portion 230 extending from the support portion 271 and formed in a wave shape. Additionally, the receiving component 200 may further include a through hole 275 penetrating the support portion 271.

[0131] That is, the curved surface 230 can be arranged in a zigzag shape, dividing the setting space 250 into multiple spaces, so that the multiple battery cells 100 are respectively housed in the multiple spaces through the curved surface 230. The through holes 275 can be formed in the multiple spaces.

[0132] Reference Figure 5b The plurality of battery cells 100 can be respectively disposed in the plurality of spaced spaces formed by the two sides of the curved surface 230.

[0133] Figure 6a This is a perspective view of yet another example of a receiving component according to the present disclosure. Figure 6b Viewed from above Figure 6a A diagram of the housing components.

[0134] Reference Figure 6a and Figure 6b The receiving component 200 may include the support portion 271 and a curved surface portion 230 extending from the support portion 271 and formed in a wave shape.

[0135] Additionally, the receiving member 200 may further include a side portion 272 extending from the periphery of the support portion 271 and wrapping around at least a portion of the plurality of battery cells 100. That is, the side portion 272 may wrap around the curved portion 230 along the periphery of the support portion 271.

[0136] Additionally, the receiving component 200 may further include a through hole 275 extending through the support portion 271.

[0137] In one embodiment, the curved surface 230 may be arranged in a zigzag shape, dividing the setting space 250 into multiple spaces, so that the multiple battery cells 100 are respectively housed in the multiple spaces through the curved surface 230.

[0138] Figure 7 A cross-section of a battery assembly according to this disclosure is shown.

[0139] The battery assembly 1000 according to this disclosure may include: a plurality of stacked bodies 500, the stacked body 500 including a support portion 271 forming a bottom surface of a mounting space 250 for accommodating a plurality of battery cells 100 and extending from the support portion 271 toward the plurality of battery cells 100 and formed in a wave shape corresponding to a portion of the outer peripheral surface of each of the plurality of battery cells 100, to a curved surface portion 230 facing the plurality of battery cells 100; a busbar 290 electrically connected to the plurality of battery cells 100; a housing 300 forming a receiving space 350 for accommodating the plurality of stacked bodies 500; and a partition portion 330 separating the receiving space 350.

[0140] The manifold 290 can be disposed on the receiving cover 310 (see reference). Figure 1 The battery assembly 1000 according to this disclosure may further include an insulating cover (not shown) between the busbar 290 and the receiving cover 310.

[0141] The busbar 290 can be electrically connected to each terminal portion 110 of the plurality of battery cells 100.

[0142] Reference Figure 7 The battery assembly 1000 according to this disclosure may further include a cooling channel 370 disposed on one of the two sides of the receiving bottom surface 391, and a refrigerant for cooling the plurality of battery cells 100 moves in the cooling channel 370.

[0143] Therefore, the battery assembly 1000 according to this disclosure can perform thermal management of the plurality of cells 100 more effectively through the cooling channel 370 and the housing component 200.

[0144] The cooling channel 370 is configured in a plate shape when facing the receiving bottom surface 391, and therefore can also be called a cooling plate.

[0145] On the other hand, refer to Figure 7 The arrow indicates that when any one of the plurality of battery cells 100 generates gas, at least a portion of the gas can move through the through hole 275 and the connecting hole 375 to the exhaust space 395.

[0146] If the accommodating space 350 is formed between the accommodating bottom surface 391 and the accommodating cover 310, then the venting space 395 may be formed between the accommodating bottom surface 391 and the bottom surface 393 of the accommodating body 390.

[0147] Gas flowing into the exhaust space 395 can pass through the exhaust port 398 (see reference). Figure 1 It is discharged to the outside.

[0148] Additionally, the housing 300 may include a partition 399 separating the exhaust space 395. This is to prevent gas that has flowed into the exhaust space 395 through any one of the through holes 275 and any one of the connecting holes 375 connected to the through hole 275 from flowing back into the housing 350 through the other connecting hole 375.

[0149] Additionally, the partition 399 may extend along the alignment direction.

[0150] On the other hand, according to this disclosure, the battery assembly 1000 may include an adhesive (not shown) between the bottom surface of the receiving member 200, i.e., the support portion 271 and the receiving bottom surface 391. This is to minimize the possibility that the receiving member 200 may move due to vibration or impact within the receiving space 350.

[0151] This disclosure can be implemented in various forms, and its scope of rights is not limited to the embodiments described above. Therefore, if a modified embodiment includes components within the scope of the claims of this disclosure, it should be considered to fall within the scope of this disclosure.

Claims

1. A battery assembly, comprising: Multiple battery cells, wherein the battery cells are cylindrical in shape; The housing component forms a space for accommodating the plurality of battery cells; as well as A housing includes: a housing space for accommodating the plurality of battery cells and the housing component; a housing bottom surface forming the bottom surface of the housing space and including a connecting hole; an exhaust space disposed across the housing bottom surface; and a connecting hole formed on the housing bottom surface and communicating between the housing space and the exhaust space. The accommodating component includes: A support portion forms the bottom surface of the receiving component and is supported by the receiving bottom surface; A curved surface extends from the support portion toward the plurality of cells and is formed as a curved surface corresponding to a portion of the outer peripheral surface of each of the plurality of cells, so as to face the plurality of cells; and A through hole penetrates the support portion at a position corresponding to the connecting hole.

2. The battery assembly according to claim 1, wherein, The curved surface has a wavy shape.

3. The battery assembly according to claim 1 or 2, further comprising: A heat dissipation section is disposed between the curved surface and the plurality of battery cells.

4. The battery assembly according to claim 1 or 2, wherein, The curved surface and the support portion are coated with an insulating material.

5. The battery assembly according to claim 1 or 2, wherein, The curved surface includes: A first main body portion and a second main body portion are disposed apart from the plurality of battery cells. The support portion includes: The first bottom extends from one end of the first main body portion toward the second main body portion; The first recessed portion has a portion of one edge of the first bottom recessed in a direction away from the second body portion; The second bottom extends from one end of the second main body portion toward the first main body portion; and The second recessed portion, a portion of one edge of the second bottom portion is recessed in a direction away from the first body portion at a position corresponding to the first recessed portion. When the first bottom and the second bottom are connected, the first recess and the second recess are connected to each other to form the through hole.

6. The battery assembly according to claim 5, wherein, The first main body, the first bottom, the second main body, and the second bottom are formed of the same material.

7. The battery assembly according to claim 5, wherein, The first main body, the first bottom, the second main body, and the second bottom are formed of different materials.

8. The battery assembly according to claim 1 or 2, wherein, The curved surface includes: A first main body portion and a second main body portion are disposed apart from the plurality of battery cells. The support portion extends from one end of the first main body portion and connects to one end of the second main body portion.

9. The battery assembly according to claim 1 or 2, wherein, Multiple through holes and multiple connecting holes are provided respectively. The plurality of through holes are provided in a one-to-one correspondence with the plurality of connecting holes.

10. The battery assembly according to claim 9, wherein, The virtual central axis of any one of the plurality of battery cells passes through any one of the through holes corresponding to that battery cell.

11. The battery assembly according to claim 1 or 2, wherein, The through-hole extends along the alignment direction of the plurality of cells and overlaps with the connecting hole.

12. The battery assembly according to claim 1 or 2, wherein, The curved surface is arranged in a zigzag shape, dividing the arrangement space into multiple spaces, so that the multiple battery cells are respectively housed in the multiple spaces through the curved surface.

13. The battery assembly according to claim 12, wherein, The receiving component further includes: The side portion extends from the periphery of the support portion and wraps around at least a portion of the plurality of battery cells.

14. The battery assembly according to claim 1 or 2, wherein, When any one of the plurality of battery cells generates gas, at least a portion of the gas moves to the exhaust space through the through hole and the connecting hole.

15. A battery assembly, comprising: A plurality of stacked bodies, the stacked bodies comprising: a support portion forming a bottom surface for accommodating a plurality of battery cells; and a curved portion extending from the support portion toward the plurality of battery cells and formed in a wave shape corresponding to a portion of the outer peripheral surface of each of the plurality of battery cells, so as to face the plurality of battery cells; The busbar is electrically connected to the plurality of battery cells; A housing is provided to form a receiving space for accommodating the plurality of stacked bodies; and A partition divides the accommodating space.

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