Battery module, battery pack and vehicle

Abstract

The utility model provides a battery module, battery pack and vehicle, wherein the battery module includes: enclosure frame, including two oppositely arranged first beams and two oppositely arranged second beams, the first beams extend along the first direction, the second beams extend along the second direction, the first direction and the second direction are mutually perpendicular in the horizontal direction; at least part of the partition beam is arranged in the enclosure frame, the partition beam extends in the first direction, the partition beam is connected with the second beam, and the partition beam divides the interior of the enclosure frame into a plurality of containing spaces; and the battery packs are arranged in the accommodating spaces, each battery pack comprises a plurality of battery units which are sequentially arranged along the first direction, and a plurality of battery packs are arranged in one accommodating space. By arranging the partition beams, the structural strength of the enclosure frame can be improved, the space in the enclosure frame is divided into a plurality of accommodating spaces by the partition beams, and a plurality of battery packs are arranged in each accommodating space, so that the battery units can be arranged in the enclosure frame as many as possible, and the energy density of the battery module is improved as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a battery module, a battery pack, and a vehicle. Background Technology

[0002] Battery packs are crucial components of new energy vehicles. On one hand, battery packs need to have high energy density, meaning they need to hold as many battery cells as possible to maximize vehicle range. On the other hand, battery packs also need sufficient strength to withstand impacts and minimize the risk of thermal runaway in individual battery cells. However, current battery pack technologies struggle to balance both energy density and structural strength. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of existing battery packs in which it is difficult to balance energy density and strength, thereby providing a battery module, battery pack and vehicle.

[0004] To address the aforementioned problems, this utility model provides a battery module, comprising: a frame including two opposing first beams and two opposing second beams, the first beams extending along a first direction and the second beams extending along a second direction, the first and second directions being perpendicular to each other in the horizontal direction; a partition beam, at least partially disposed within the frame, extending along the first direction and connected to the second beams, the partition beam dividing the frame into multiple receiving spaces; and a battery pack disposed within the receiving spaces, the battery pack comprising multiple battery cells arranged sequentially along the first direction, multiple battery packs disposed within one receiving space, the multiple battery packs being arranged along the second direction, and adjacent battery packs within the same receiving space being connected.

[0005] Optionally, the battery cell includes two first sides facing each other along a first direction and two second sides along a second direction. The area of ​​the first side is larger than the area of ​​the second side. In a battery pack, there is a gap between the two first sides of two adjacent battery cells. The second side of the battery cell is connected to a first beam, or the second side of the battery cell is connected to a partition beam, or a partition is provided between two adjacent battery cells along the first direction. The partition is strip-shaped and at least one is provided, or the partition includes a loop frame.

[0006] Optionally, the battery module also includes a connecting plate, which is bent, and the second beam and the partition beam are connected by the connecting plate, and / or the second beam and the first beam are connected by the connecting plate.

[0007] Optionally, the second beam includes multiple end plates, with both ends of the end plates connected to the connecting plates of two adjacent partition beams, or one end of the end plate is connected to the connecting plate of the first beam, and the other end of the end plate is connected to the connecting plate of the partition beam adjacent to the first beam.

[0008] Optionally, one end of the partition beam extends beyond the second beam to form a protrusion, and a first adapter is provided on the protrusion for connection with the vehicle body.

[0009] Optionally, there are multiple partition beams, and at least two partition beams extend beyond the second beam on the same side. The portion of the partition beam that extends beyond the second beam forms a protrusion, and a placement space is formed between adjacent protrusions.

[0010] This utility model also provides a battery pack, including: a bottom shell and a top cover that are interlocked; and a battery module disposed between the bottom shell and the top cover, wherein the battery module is the aforementioned battery module.

[0011] Optionally, the battery pack also includes an adapter assembly for connecting one end of the partition beam to the bottom shell and connecting the bottom shell to the vehicle body.

[0012] Optionally, the adapter assembly includes a first adapter and a second adapter. The first adapter is disposed on the protrusion of the partition beam that protrudes from the second beam and is connected to the bottom shell. The second adapter is disposed on the surface of the bottom shell that is opposite to the receiving space and is disposed correspondingly to the first adapter and the second adapter. The first adapter and the second adapter are connected, and the second adapter is used to connect to the vehicle body.

[0013] Optionally, the first adapter includes a first connecting piece and a second connecting piece, the first connecting piece being connected to the protrusion of the partition beam, and the second connecting piece being connected to the surface of the bottom shell facing the receiving space, with the first connecting piece and the second connecting piece being connected.

[0014] Optionally, the first connecting piece includes a first segment and a second segment. The first segment is connected to the surface of the protrusion facing the second direction, and the second segment is set at an angle to the first segment. The second segment is used to connect with the second connecting piece.

[0015] Optionally, the second connecting piece includes a third segment and a fourth segment. The third segment is connected to the surface of the bottom shell facing the receiving space, and the fourth segment is set at an angle to the third segment and is used to connect with the second segment.

[0016] Optionally, the bottom shell includes a bottom plate, a side plate connected to the bottom plate, and a first connecting flange connected to the side plate. The second adapter includes a fifth section and a sixth section. The fifth section is connected to the side plate, and the sixth section is connected to the first connecting flange. The fifth section is used to connect with the third section, and the sixth section is connected to both the first connecting flange and the vehicle body.

[0017] Optionally, the battery pack also includes a heat exchange device disposed between the battery module and the bottom shell. There are multiple partition beams, and at least two partition beams have their ends on the same side extending beyond the second beam to form protrusions. A placement space is formed between adjacent protrusions. The heat exchange device includes a water inlet, which is located inside the placement space or outside the placement space.

[0018] This utility model also provides a vehicle including the aforementioned battery pack.

[0019] This utility model has the following advantages:

[0020] The technical solution of this utility model includes a frame comprising a first beam and a second beam, and a partition beam is provided within the frame. By providing the partition beam, the structural strength of the frame can be improved. The partition beam divides the space within the frame into multiple accommodating spaces, and each accommodating space contains at least one battery pack. Therefore, as many battery cells as possible can be placed within the frame, thereby maximizing the energy density of the battery module. Thus, the battery module of this utility model can effectively balance energy density and structural strength, solving the problem of existing battery packs that struggle to achieve both. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the battery module of this utility model is shown;

[0023] Figure 2 It shows Figure 1 Exploded view of the battery module;

[0024] Figure 3 It shows Figure 1 A schematic diagram of the frame structure of the battery module;

[0025] Figure 4 It shows Figure 1 A structural schematic diagram of the first beam and the partition beam of the battery module;

[0026] Figure 5 It shows Figure 4 A structural schematic diagram of the end position of the central partition beam;

[0027] Figure 6 It shows Figure 1 A schematic diagram of the structure of adjacent battery cells in the same battery pack of a battery module;

[0028] Figure 7 A schematic diagram of the battery pack and vehicle body of this utility model is shown;

[0029] Figure 8 An exploded view of the battery pack of this utility model is shown;

[0030] Figure 9 It shows Figure 8 A schematic diagram of the bottom shell structure of the battery pack (after rotating 90° counterclockwise);

[0031] Figure 10 It shows Figure 9 A schematic diagram of the structure at the second connecting piece of the bottom shell;

[0032] Figure 11 It shows Figure 8 A structural schematic diagram of the bottom shell of the battery pack from a bottom perspective;

[0033] Figure 12 It shows Figure 11 A schematic diagram of the structure at the second adapter of the bottom shell.

[0034] Explanation of reference numerals in the attached figures:

[0035] X, first direction; Y, second direction;

[0036] 10. Enclosure frame; 11. First beam; 12. Second beam; 121. End plate;

[0037] 20. Dividing beam; 21. Protrusion; 22. Placement space;

[0038] 30. Accommodation space;

[0039] 40. Battery pack; 41. Battery cell; 411. First side; 412. Second side; 42. Separator;

[0040] 50. Connecting plate;

[0041] 60. Bottom shell; 61. Bottom plate; 62. Side plate; 63. First connecting flange;

[0042] 70. Top cover; 71. Second connecting flange;

[0043] 80. Adapter assembly; 81. First adapter; 811. First connecting piece; 8111. First segment; 8112. Second segment; 812. Second connecting piece; 8121. Third segment; 8122. Fourth segment; 82. Second adapter; 821. Fifth segment; 822. Sixth segment;

[0044] 90. Heat exchanger; 91. Water inlet;

[0045] 100. Body; 101. Front bulkhead crossbeam; 102. Rear seat crossbeam; 103. Sill beam; 104. Front seat crossbeam;

[0046] 110. Connecting beam;

[0047] 120, connecting edge; 1201, first edge; 1202, second edge. Detailed Implementation

[0048] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0052] like Figure 1As shown, an embodiment of the battery module according to the present application includes a surrounding frame 10 and a battery pack 40. Among them, the surrounding frame 10 includes two relatively arranged first beams 11 and two relatively arranged second beams 12, the first beam 11 extends along the first direction X, and the second beam 12 extends along the second direction Y. A partition beam 20 is arranged inside the surrounding frame 10. The partition beam 20 extends along the first direction X, and the partition beam 20 is connected to both second beams 12. The partition beam 20 divides the inside of the surrounding frame 10 into multiple accommodation spaces 30. The battery pack 40 is arranged inside the accommodation space 30. The battery pack 40 includes multiple battery cells 41 arranged in sequence along the first direction X, and at least one battery pack 40 is arranged in one accommodation space 30.

[0053] Using the technical solution of this embodiment, the surrounding frame 10 includes the first beam 11 and the second beam 12, and at the same time, a partition beam 20 is arranged inside the surrounding frame 10. By arranging the partition beam 20, the structural strength of the surrounding frame 10 can be improved. The partition beam 20 divides the space inside the surrounding frame 10 into multiple accommodation spaces 30, and at least one battery pack 40 is arranged in each accommodation space 30. Therefore, as many battery cells 41 as possible can be arranged inside the surrounding frame 10, so as to improve the energy density of the battery module as much as possible. Therefore, the battery module of this embodiment can better balance the energy density and the structural strength, and solves the defect that it is difficult to balance the energy density and the strength in the existing battery pack.

[0054] First, it should be noted that the above-mentioned first direction X and second direction Y are two mutually perpendicular directions in the horizontal plane. In this embodiment, the first direction X is the front-back direction of the vehicle, and the second direction Y is the left-right direction of the vehicle. Of course, those skilled in the art can change the specific directions pointed by the first direction X and the second direction Y according to actual needs.

[0055] From Figure 1 and Figure 2 it can be seen that the first beam 11 and the second beam 12 are connected end to end in sequence. That is, the two first beams 11 are relatively arranged, the two second beams 12 are relatively arranged, and the first beam 11 and the second beam 12 are adjacent to each other. In this way, the surrounding frame 10 forms a structure similar to a "square" shape, and the space inside the surrounding frame 10 is used to accommodate the battery pack 40.

[0056] From Figure 2 and Figure 3 it can be seen that a partition beam 20 is arranged inside the surrounding frame 10. Among them, the partition beam 20 extends along the first direction X, that is, the partition beam 20 is parallel to the first beam 11. At the same time, the partition beam 20 is connected to both second beams 12. The main function of the partition beam 20 is to strengthen the structural strength of the surrounding frame 10 to improve the overall collision performance of the battery module.

[0057] Furthermore, the partition beam 20 divides the space within the enclosure 10 into multiple receiving spaces 30, in which the battery pack 40 is housed. Those skilled in the art will understand that the number of receiving spaces 30 is related to the number of partition beams 20. For example, when one partition beam 20 is provided, there are two receiving spaces 30; and when two partition beams 20 are provided, there are three receiving spaces 30, and so on.

[0058] from Figure 3 As can be seen, the multiple accommodating spaces 30 are arranged along the second direction Y.

[0059] from Figure 3 It can also be seen that there are two partition beams 20 in this embodiment, that is, there are three accommodating spaces 30.

[0060] from Figure 2 As can be seen, the battery pack 40 includes multiple battery cells 41, which are arranged along the first direction X. That is, the battery pack 40 is an elongated structure extending along the first direction X. For a receiving space 30, depending on the width of the battery cells 41 along the second direction Y, a receiving space 30 can hold only one battery pack 40 or multiple battery packs 40 placed side by side.

[0061] In this embodiment, a plurality of battery packs 40 are disposed within a housing space 30, and the plurality of battery packs 40 are arranged along the second direction Y. This arrangement allows a plurality of battery packs 40 to be accommodated within a housing space 30, which is more suitable for small-volume battery cells 41 and helps to improve the overall energy density of the battery module.

[0062] In some embodiments not shown, the number of battery packs 40 within a housing space 30 may be increased, for example, to three or four battery packs 40.

[0063] from Figure 2 As can be seen, in this embodiment, each of the three accommodating spaces 30 contains two battery packs 40, which can better ensure the balance of the battery module's center of gravity and is beneficial for the vehicle's stable driving.

[0064] In some embodiments not shown, the number of battery packs 40 disposed in different housing spaces 30 may also be different. For example, in three housing spaces 30, one battery pack 40 is disposed in the housing space 30 located in the middle, and two battery packs 40 are disposed in the housing spaces 30 located on both sides.

[0065] Furthermore, for a receiving space 30 that is provided with multiple battery packs 40, in adjacent battery packs 40 within the same receiving space 30, the opposite surfaces of two adjacent battery cells 41 are connected.

[0066] by Figure 2 The structure shown is illustrated in the diagram, in which two battery packs 40 are disposed within each accommodating space 30. Figure 2 The example shown is from left to right. The first battery cell 41 of the two battery packs 40 is the corresponding two adjacent battery cells 41, the second battery cell 41 of the two battery packs 40 is also the corresponding two adjacent battery cells 41, and so on.

[0067] By connecting the two opposing surfaces of two adjacent battery cells 41 in adjacent battery packs 40, the two battery packs 40 are connected into one unit. During hoisting, the two (or more) integrated battery packs 40 can be placed into the accommodating space 30, making assembly easier.

[0068] Furthermore, the connection method for connecting the two opposite surfaces of two adjacent battery cells 41 can be adhesive bonding, fastener connection, etc.

[0069] like Figure 2 and Figure 6 As shown, in the technical solution of this embodiment, the battery unit 41 includes two first side surfaces 411 facing each other along a first direction X, and two second side surfaces 412 along a second direction Y. The area of ​​the first side surface 411 is larger than the area of ​​the second side surface 412. That is, the battery unit 41 in this embodiment is a square battery, with the first side surface 411 being the larger surface and the second side surface 412 being the smaller surface.

[0070] Furthermore, in a battery pack 40, the first sides 411 of two adjacent battery cells 41 are arranged opposite each other, and in adjacent battery packs 40 within the same receiving space 30, the opposite second sides 412 of two adjacent battery cells 41 are bonded together.

[0071] In this embodiment, in a battery pack 40, the large surfaces (i.e., the first side surfaces 411) of adjacent battery cells 41 are arranged opposite each other. During assembly, the small surfaces (i.e., the second side surfaces 412) of two adjacent battery cells 41 are glued together to fix the battery pack 40.

[0072] like Figure 6 As shown, in the technical solution of this embodiment, the battery module further includes a separator 42, which abuts against the first side surface 411 of two adjacent battery cells 41. Specifically, the function of the separator 42 is to create a certain gap between the two battery cells 41, thereby reserving expansion space for the battery cells 41.

[0073] In this embodiment, the separator 42 can take various forms. For example, the separator 42 can be a loop-shaped frame structure composed of four sides; or the separator 42 can also be strip-shaped, and at least one separator 42 can be provided between adjacent battery cells 41, such as one strip-shaped separator 42, two strip-shaped separators 42, or three strip-shaped separators 42, etc.

[0074] In some embodiments not shown, the battery module may not have the separator 42. In this embodiment, during assembly, adjacent battery cells 41 of the battery pack 40 are fixed with a gap (the first side surfaces 411 are arranged opposite each other) using tooling, and then the entire battery pack 40 is placed into the receiving space 30. Finally, the two sides of the battery cells 41 are fixed to the beam, thereby fixing the battery cells 41 within the receiving space 30, while allowing for expansion space between adjacent battery cells 41.

[0075] like Figure 2 As shown, those skilled in the art will understand that in an embodiment where only one battery pack 40 is disposed within a housing space 30, when the two sides of the battery unit 41 are the first beam 11 and the partition beam 20 respectively, the two second side surfaces 412 of the battery unit 41 are connected to the first beam 11 and the partition beam 20 respectively. When both sides of the battery unit 41 are partition beams 20, the two second side surfaces 412 of the battery unit 41 are connected to the two partition beams 20 respectively. This connection can be adhesive, fastener connection, etc.

[0076] like Figures 2 to 5 As shown, in the technical solution of this embodiment, a connecting plate 50 is provided at the end of the first beam 11 and the end of the partition beam 20, and the connecting plate 50 is bent. Further, the second beam 12 and the partition beam 20 are connected by the connecting plate 50, and / or the second beam 12 and the first beam 11 are connected by the connecting plate 50.

[0077] Specifically, the connecting plate 50 is roughly L-shaped. The function of the connecting plate is to connect the first beam 11 or the partition beam 20 with the second beam 12, thereby enhancing the structural strength of the frame 10.

[0078] like Figure 4 and Figure 5 As shown, since the first beam 11 is the outermost beam of the frame 10 along the second direction Y, a connecting plate 50 is provided only on one surface of the first beam 11 along the Y direction, and the connecting plate 50 is provided on the surface of the first beam 11 facing the receiving space 30. One side of the connecting plate 50 can be connected to the first beam 11 by welding, fasteners or other connection methods, and the other side of the connecting plate 50 can be connected to the second beam 12 by welding, fasteners or other connection methods.

[0079] Furthermore, connecting plates 50 are provided at both ends of the first beam 11 along the first direction X.

[0080] like Figure 4 and Figure 5 As shown, connecting plates 50 are provided on both surfaces of the partition beam 20 along the second direction Y. One side of the connecting plate 50 can be connected to the partition beam 20 by welding, fasteners or other connection methods, and the other side of the connecting plate 50 can be connected to the second beam 12 by welding, fasteners or other connection methods.

[0081] Furthermore, connecting plates 50 are provided at both ends of the partition beam 20 along the first direction X.

[0082] like Figures 2 to 4 As shown, in the technical solution of this embodiment, the second beam 12 includes a plurality of end plates 121. The two ends of the end plates 121 are respectively connected to the connecting plates 50 of two adjacent partition beams 20. Alternatively, one end of the end plate 121 is connected to the connecting plate 50 of the first beam 11, and the other end of the end plate 121 is connected to the connecting plate 50 of the partition beam 20 adjacent to the first beam 11.

[0083] Specifically, in this embodiment, the second beam 12 is a split structure, formed by multiple end plates 121. When the end plate 121 is located between the first beam 11 and the partition beam 20, one end of the end plate 121 is connected to the connecting plate 50 on the first beam 11, and the other end is connected to the connecting plate 50 on the partition beam 20. When the end plate 121 is located between two adjacent partition beams 20, both ends of the end plate 121 are connected to the connecting plates 50 on the two partition beams 20 respectively.

[0084] In this embodiment, the separate second beam 12 facilitates assembly. In some embodiments not shown, the second beam 12 may also be a single integral beam structure. In such embodiments, a connecting plate 50 may be provided only on the partition beam 20, and then the integral second beam 12 may be connected to the connecting plate 50 on the partition beam 20; alternatively, a connecting plate 50 may be provided only on the first beam 11, and then the integral second beam 12 may be connected to the connecting plate 50 on the first beam 11; alternatively, connecting plates 50 may be provided on both the partition beam 20 and the first beam 11, and then the integral second beam 12 may be connected to the connecting plate 50 on both the first beam 11 and the partition beam 20.

[0085] like Figures 3 to 5 As shown, in the technical solution of this embodiment, the end of the partition beam 20 extends beyond the second beam 12, and the portion of the partition beam 20 that protrudes from the second beam 12 forms a protrusion 21.

[0086] First, the meaning of "the end of the partition beam 20 extends beyond the second beam 12" is that after the frame 10 is assembled, the end of the partition beam 20 must extend beyond the second beam 12 along the first direction X. This structure is achieved as follows: Figure 5 As shown, the connecting plate 50 is not located at the end edge of the partition beam 20, but at a certain distance from the end edge. Furthermore, the distance between the connecting plate 50 and the end edge of the partition beam 20 is greater than the thickness of the second beam 12 (end plate 121). Therefore, after assembly, the end edge of the partition beam 20 can extend beyond the second beam 12 by a certain distance.

[0087] Furthermore, in this embodiment, the partition beam 20 has a protrusion 21 at only one end along the first direction X. In some embodiments not shown, protrusions 21 may also be provided at both ends of the partition beam 20 along the first direction X.

[0088] Furthermore, in this embodiment, a protrusion 21 is provided at the same end of both partition beams 20. For multiple partition beams 20, all partition beams 20 may be provided with protrusions 21, or only some partition beams 20 may be provided with protrusions 21.

[0089] like Figures 1 to 5 As shown, in the technical solution of this embodiment, a first adapter 81 is provided on the protrusion 21, and the first adapter 81 is used to connect with the vehicle body 100.

[0090] Specifically, when a vehicle collision occurs, the impact force of the vehicle body 100 needs to be transferred to the partition beam 20 to improve the overall impact resistance of the battery module. However, since the outer shell of the battery pack has low strength (usually thin-walled sheet metal), it cannot play a role in force transmission. Therefore, a first adapter 81 needs to be set on the protrusion 21. That is, the function of the first adapter 81 is to transfer the impact force of the vehicle body 100 to the partition beam 20.

[0091] The specific structure and installation method of the first adapter 81 will be described in detail below.

[0092] like Figures 1 to 5 As shown, in this embodiment, two partition beams 20 are provided, and each end of the two partition beams 20 is provided with a protrusion 21. Each protrusion 21 is provided with a first adapter 81. Of course, the first adapter 81 can also be provided on some of the protrusions 21.

[0093] like Figures 2 to 4As shown, in the technical solution of this embodiment, there are multiple partition beams 20. Among the multiple partition beams 20, at least two partition beams 20 extend beyond the second beam 12 on the same side. The portion of the partition beam 20 that protrudes from the second beam 12 forms a protrusion 21, and a placement space 22 is formed between adjacent protrusions 21.

[0094] Specifically, as described above, in this embodiment, protrusions 21 are provided on the same side of both partition beams 20, thus forming a placement space 22 between the two protrusions 21. The placement space 22 can accommodate the sprue of the cold plate, electrical components, etc. By providing the placement space 22, the structure of the battery pack can be made more compact, and the protrusions 21 can also protect the components located in the placement space 22.

[0095] Furthermore, when there are two or more partition beams 20, protrusions 21 can be provided only at the same end of two partition beams 20, meaning that at least two protrusions 21 are required to form the placement space 22. Meanwhile, when there are two or more partition beams 20, if protrusions 21 are provided at the same end of each partition beam 20, multiple side-by-side placement spaces 22 can be formed.

[0096] In the technical solution of this embodiment, the first beam 11 and / or the partition beam 20 are roll-formed beams, profile beams, or composite material beams.

[0097] Specifically, the forming methods of the first beam 11 and the partition beam 20 can be flexibly selected, such as roll forming (roll-formed beam), extrusion forming (profile beam), or directly using composite material beams. Furthermore, the forming methods of the first beam 11 and the partition beam 20 can be the same or different.

[0098] like Figure 7 and Figure 8 As shown, this application also provides a battery pack, which, according to an embodiment of the battery pack of this application, includes a bottom shell 60 and a top cover 70 that are interlocked, and a battery module. The battery module is disposed between the bottom shell 60 and the top cover 70, and the battery module is the battery module described above.

[0099] like Figure 1 , Figure 8 and Figure 11 As shown, the battery pack also includes an adapter assembly 80 for connecting the end of the partition beam 20 to the bottom shell 60 and connecting the bottom shell 60 to the vehicle body 100.

[0100] Furthermore, the adapter assembly 80 is connected to the protrusion 21 of the aforementioned partition beam 20 that protrudes from the second beam 12.

[0101] Specifically, as described above, when a vehicle collision occurs, the impact force of the vehicle body 100 needs to be transferred to the partition beam 20 to improve the overall impact resistance of the battery module. The bottom shell 60 has low strength (usually thin-walled sheet metal) and cannot play a role in force transmission. Therefore, a transfer component 80 is required. That is, the function of the transfer component 80 is to transfer the impact force of the vehicle body 100 to the partition beam 20.

[0102] By setting the adapter component 80, the force transmission path after a vehicle collision is: vehicle body 100 - adapter component 80 - partition beam 20.

[0103] like Figure 2 , Figure 9 and Figure 11 As shown, the adapter assembly 80 includes a first adapter 81 and a second adapter 82. The first adapter 81 is connected to both the partition beam 20 and the bottom shell 60, and is also connected to the protrusion 21 of the partition beam 20. The second adapter 82 is disposed on the surface of the bottom shell 60 opposite to the receiving space 30, and is correspondingly disposed to the first adapter 81 and the second adapter 82. The first adapter 81 and the second adapter 82 are connected, and the second adapter 82 is used to connect to the vehicle body 100.

[0104] Specifically, since the adapter assembly 80 needs to transfer the collision force from the vehicle body 100 located on the outside of the bottom shell 60 to the partition beam 20 inside the bottom shell 60, the adapter assembly 80 is configured as two separate parts, namely, a first adapter 81 and a second adapter 82.

[0105] The first adapter 81 is disposed inside the bottom shell 60 and is connected to both the partition beam 20 and the bottom shell 60. The second adapter 82 is disposed on the outside of the bottom shell 60, specifically on the surface of the bottom shell 60 opposite to the receiving space 30. The first adapter 81 and the second adapter 82 are positioned correspondingly, with the wall of the bottom shell 60 sandwiched between them. The first adapter 81 and the second adapter 82 can be connected together by fasteners, welding, or other methods. During assembly, the second adapter 82 is connected to the vehicle body 100. Therefore, the vehicle body 100, the second adapter 82, the first adapter 81, and the partition beam 20 form an integrated structure. In the event of a collision, the impact force can be transmitted along this integrated structure, and a portion of the impact force on the vehicle body can be absorbed and buffered by the partition beam 20, thus improving the overall collision performance of the battery pack.

[0106] The following is a detailed description of the specific structure of the first adapter 81.

[0107] like Figures 3 to 5 ,as well as Figure 9 , Figure 10As shown, the first adapter 81 includes a first connecting piece 811 and a second connecting piece 812. The first connecting piece 811 is connected to the protrusion 21 of the partition beam 20, and the second connecting piece 812 is connected to the surface of the bottom shell 60 facing the receiving space 30. The first connecting piece 811 and the second connecting piece 812 are connected, and the connecting surfaces of the first connecting piece 811 and the second connecting piece 812 are located in the plane containing the first direction X and the second direction Y, or the connecting surfaces of the first connecting piece 811 and the second connecting piece 812 form a certain angle (less than 90°) with the plane containing the first direction X and the second direction Y.

[0108] Specifically, since the battery module needs to be installed into the bottom shell 60 as a whole during assembly, the first adapter 81 also needs to be set as two separate parts, namely, the first connecting piece 811 and the second connecting piece 812.

[0109] The first connecting piece 811 is fixedly mounted on the partition beam 20, and the second connecting piece 812 is fixedly mounted inside the bottom shell 60, i.e., connected to the surface of the bottom shell 60 facing the receiving space 30. During assembly, the battery module gradually descends and is placed inside the bottom shell 60. Simultaneously, the first connecting piece 811 gradually moves closer to the second connecting piece 812 until the first connecting piece 811 and the second connecting piece 812 overlap. Then, the first connecting piece 811 and the second connecting piece 812 are connected together, thereby fixing the bottom shell 60 and the partition beam 20.

[0110] Furthermore, the first connecting piece 811 and the second connecting piece 812 can be connected together by fasteners, welding, or other means.

[0111] In this embodiment, the first connecting piece 811 is provided with a connecting hole, and the second connecting piece 812 is also provided with a connecting hole. When the first connecting piece 811 and the second connecting piece 812 overlap, their connecting holes are aligned. Then, a bolt is inserted and a nut is tightened to fix the first connecting piece 811 and the second connecting piece 812.

[0112] Furthermore, the connecting surfaces of the first connecting piece 811 and the second connecting piece 812 are located in the plane containing the first direction X and the second direction Y, meaning their overlapping surfaces are horizontal. With this configuration, when the battery module is assembled into the bottom shell 60, the alignment of the first connecting piece 811 and the second connecting piece 812 can be achieved simply by finely adjusting the position of the battery module relative to the bottom shell 60 in the horizontal direction. This also facilitates observation of the alignment of the first connecting piece 811 and the second connecting piece 812. If the connecting surfaces of the first connecting piece 811 and the second connecting piece 812 were set as vertical surfaces, the difficulty of aligning the first connecting piece 811 and the second connecting piece 812 during assembly would be greatly increased, and it would also be difficult to observe the alignment of the first connecting piece 811 and the second connecting piece 812.

[0113] like Figure 5 As shown, in the technical solution of this embodiment, the first connecting piece 811 includes a first segment 8111 and a second segment 8112. The first segment 8111 is connected to the surface of the protrusion 21 of the partition beam 20 facing the second direction Y. The second segment 8112 is set at an angle to the first segment 8111, and the second segment 8112 is bent relative to the first segment 8111 in the second direction Y. The second segment 8112 is used to connect with the second connecting piece 812.

[0114] Specifically, the first connecting piece 811 is roughly L-shaped, meaning that the first segment 8111 and the second segment 8112 are bent at approximately a 90-degree angle. The first segment 8111 is connected to the side of the protrusion 21 of the partition beam 20, that is, the surface facing the second direction Y. The second segment 8112 is bent relative to the first segment 8111 towards the second direction Y. Furthermore, the plane containing the second segment 8112 is the plane containing both the first direction X and the second direction Y, that is, the horizontal plane.

[0115] Combination Figure 5 It can also be seen that two first connecting pieces 811 are provided on a partition beam 20, and the two first connecting pieces 811 are respectively located on two opposite sides of the protrusion 21 of the partition beam 20. The two first connecting pieces 811 have the same structure, and the bending directions of the second segment 8112 of the two first connecting pieces 811 are opposite, that is, the two first connecting pieces 811 are arranged in a mirror symmetrical manner with respect to the partition beam 20.

[0116] Furthermore, a connection hole is provided on the second section 8112.

[0117] like Figure 10 As shown, the second connecting piece 812 includes a third segment 8121 and a fourth segment 8122. The third segment 8121 is connected to the surface of the bottom shell 60 facing the receiving space 30, and the fourth segment 8122 is angled relative to the third segment 8121. Furthermore, the fourth segment 8122 is bent relative to the third segment 8121 in a first direction X, and is used to connect with the first connecting piece 811. More specifically, the fourth segment 8122 is used to connect with the second segment 8112 of the first connecting piece 811.

[0118] Specifically, the second connecting piece 812 is roughly inverted "L" shaped, and the third segment 8121 extends vertically and connects to the inner wall of the bottom shell 60. The specific tilt angle of the third segment 8121 is determined according to the extension direction of the side wall of the bottom shell 60. The fourth segment 8122 is connected to the upper side of the third segment 8121 and bends relative to the third segment 8121 along the X direction. Furthermore, the plane containing the fourth segment 8122 is the plane containing the first direction X and the second direction Y, that is, the horizontal plane.

[0119] from Figure 10 It can also be seen that a second connecting piece 812 includes two fourth segments 8122, which are spaced apart along the second direction Y. The function of the two fourth segments 8122 is to mate with the second segments 8112 of the first connecting pieces 811 on both sides of a partition beam 20. The gap between the two fourth segments 8122 is used to allow the protrusion 21 of the partition beam 20 to be inserted downwards. Therefore, the distance between the two fourth segments 8122 should be slightly greater than the thickness of the partition beam 20 along the second direction Y. This ensures that the protrusion 21 can be smoothly inserted between the two fourth segments 8122, and also leaves adjustment space for the movement of the battery module in the second direction Y, making it easy to align the second segment 8112 and the fourth segment 8122.

[0120] Combination Figure 9 and Figure 10 It can also be seen that a plurality of second connecting pieces 812 are provided inside the bottom shell 60, and the plurality of second connecting pieces 812 are distributed along the second direction Y. The number of second connecting pieces 812 depends on the number of partition beams 20 provided with first connecting pieces 811. In this embodiment, the protrusions 21 of the two partition beams 20 are both provided with first connecting pieces 811, so there are two second connecting pieces 812.

[0121] Furthermore, a connection hole is provided on the fourth segment 8122.

[0122] Based on the above structure, during assembly, the battery module is inserted downwards into the bottom shell 60, while the protrusion 21 of the partition beam 20 is inserted downwards into the gap between the two fourth segments 8122. After the battery module is installed in place, the second segments 8112 on both sides of one partition beam 20 overlap the two fourth segments 8122 of the second connecting piece 812. Then, the horizontal position of the battery module relative to the bottom shell 60 is adjusted so that the connecting holes of the second segments 8112 and the fourth segments 8122 are aligned, and the installation is completed after fasteners are installed.

[0123] like Figure 9 , Figure 11 and Figure 12 As shown, in this embodiment, the bottom shell 60 includes a bottom plate 61, a side plate 62 connected to the bottom plate 61, and a first connecting flange 63 connected to the side plate 62. The second adapter 82 includes a fifth segment 821 and a sixth segment 822. The fifth segment 821 is connected to the side plate 62, and the sixth segment 822 is connected to the first connecting flange 63. The fifth segment 821 is used to connect with the third segment 8121, and the sixth segment 822 is connected to both the first connecting flange 63 and the vehicle body 100.

[0124] Specifically, the bottom plate 61 and side plate 62 of the bottom shell 60 form a basin-shaped structure. The first connecting flange 63 is used to overlap with the second connecting flange 71 of the top cover 70. The first connecting flange 63 and the second connecting flange 71 together form the connecting edge 120 of the battery pack. The battery pack is connected to the vehicle body 100 through the connecting edge 120.

[0125] When a vehicle collision occurs, the impact force needs to be transferred from the connecting edge 120 of the battery pack to the side plate 62 of the bottom shell 60, and then transferred to the partition beam 20 through the first connecting piece 811 and the second connecting piece 812. Therefore, in this embodiment, the second adapter 82 is divided into two parts, namely the fifth segment 821 and the sixth segment 822.

[0126] from Figure 12 As can be seen, the fifth segment 821 is disposed on the outer wall surface of the side plate 62, and the sixth segment 822 is disposed on the surface of the first connecting flange 63 facing the bottom plate 61. The fifth segment 821 and the sixth segment 822 are disposed at an angle, which is adapted to the angle formed by the side plate 62 and the first connecting flange 63.

[0127] Furthermore, the sixth segment 822 is provided with a connecting hole, and the first connecting flange 63 is provided with a connecting hole. The first connecting flange 63 and the sixth segment 822 are fixed to the vehicle body 100 by fasteners.

[0128] Combination Figure 10 As can be seen, the third segment 8121 is connected to the inner wall of the side plate 62, and the positions of the third segment 8121 and the fifth segment 821 correspond. During assembly, the third segment 8121 and the fifth segment 821 are connected together by welding or fasteners.

[0129] Based on the above structure, when a vehicle collides, the transmission path of the collision force is: body 100 - sixth segment 822 - fifth segment 821 - third segment 8121 - fourth segment 8122 - second segment 8112 - first segment 8111 - partition beam 20.

[0130] like Figure 7 , Figure 11 and Figure 12 As shown, in this embodiment, the adapter assembly 80 connects the bottom shell 60 to the front crossbeam 101 of the vehicle. That is, the sixth segment 822 is connected to the front crossbeam 101. When a collision occurs, the impact force at the front crossbeam 101 is transmitted to the partition beam 20 through the first adapter 81 and the second adapter 82, thereby improving the overall strength of the vehicle body.

[0131] like Figure 8 and Figure 9As shown, in the technical solution of this embodiment, the bottom shell 60 includes a first connecting flange 63, and the top cover 70 includes a second connecting flange 71. After the top cover 70 is fastened to the bottom shell 60, the first connecting flange 63 and the second connecting flange 71 form a connecting edge 120.

[0132] Furthermore, the connecting edge 120 includes two first edges 1201 arranged opposite each other along the first direction X, and two second edges 1202 arranged opposite each other along the second direction Y. One of the first edges 1201 is used to connect to the front crossbeam 101 of the vehicle, and the other first edge 1201 is used to connect to the rear seat crossbeam 102 of the vehicle. The two second edges 1202 are respectively connected to the two door sill beams 103.

[0133] Specifically, after the top cover 70 is fastened onto the bottom shell 60, the first connecting flange 63 and the second connecting flange 71 overlap, forming a connecting edge 120. Further, one of the first edges 1201 is located on the front side of the vehicle and connects to the front bulkhead crossbeam 101, while the other first edge 1201 is located on the rear side of the vehicle and connects to the rear seat crossbeam 102. The two second edges 1202 are located on both sides of the vehicle and connect to the two sill beams 103 respectively.

[0134] like Figure 2 As shown, in this embodiment, the battery pack further includes a heat exchange device 90, which is disposed between the battery module and the bottom shell 60. The heat exchange device 90 includes a water inlet 91, which is located within the aforementioned placement space 22, or outside the aforementioned placement space 22.

[0135] Specifically, the function of the heat exchange device 90 is to cool or heat the battery pack 40. The heat exchange device 90 includes a cold plate, which is mounted on the base plate 61 and placed below the battery module. The cold plate is provided with a water inlet 91, which is used to connect to a pipeline and allow the heat exchange medium to flow into or out of the cold plate.

[0136] In this embodiment, the water inlet 91 is located within the placement space 22 formed by the two protrusions 21. This makes the heat exchange device 90 more compact, and the protrusions 21 also protect the water inlet 91 and the pipeline.

[0137] In some embodiments not shown, the water inlet 91 may also be positioned outside the placement space 22.

[0138] like Figure 7 and Figure 8In the technical solution of this embodiment, a connecting beam 110 is provided on the surface of the top cover 70 away from the bottom shell 60. The connecting beam 110 extends in the second direction Y and is connected to the first beam 11 and / or the partition beam 20. The connecting beam 110 is used to connect to the front seat crossbeam 104 of the vehicle.

[0139] Specifically, the connecting beam 110 is used to further connect the battery pack to the vehicle body 100, thereby increasing the connection strength between the battery pack and the vehicle body 100. The upper side of the connecting beam 110 is connected to the front seat crossbeam 104, and the lower side is connected to the battery module frame inside the battery pack. The number and arrangement of the connecting beams 110 can be determined based on the front seat crossbeam 104. In this embodiment, there are two front seat crossbeams 104, therefore there are also two connecting beams 110.

[0140] Furthermore, the front seat crossbeam 104, the connecting beam 110, and the battery module can be connected together by fasteners, and the fasteners pass through the top cover 70 and are connected to the battery module.

[0141] Optionally, the connecting beam 110 is connected to both the first beam 11 and the partition beam 20, thus the connecting beam 110, the first beam 11 and the partition beam 20 form a cross frame, which greatly improves the strength of the battery module.

[0142] In some embodiments not shown, the connecting beam 110 may be connected only to the first beam 11 or only to the partition beam 20.

[0143] This application also provides a vehicle, an embodiment of which includes the battery pack described above. The vehicle is preferably a new energy vehicle.

[0144] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A battery module, characterized in that, include: The enclosure (10) includes two opposing first beams (11) and two opposing second beams (12), the first beams (11) extending along a first direction (X) and the second beams (12) extending along a second direction (Y), the first direction (X) and the second direction (Y) being perpendicular to each other in the horizontal direction; A partition beam (20) is at least partially disposed within the enclosure (10), the partition beam (20) extends along the first direction (X) and is connected to the second beam (12), the partition beam (20) dividing the enclosure (10) into a plurality of receiving spaces (30). A battery pack (40) is disposed in a housing space (30). The battery pack (40) includes a plurality of battery cells (41) arranged sequentially along a first direction (X). A plurality of battery packs (40) are disposed in a housing space (30). The plurality of battery packs (40) are arranged along a second direction (Y). Adjacent battery packs (40) in the same housing space (30) are connected.

2. The battery module according to claim 1, characterized in that, The battery cell (41) includes two first side surfaces (411) facing each other along the first direction (X) and two second side surfaces (412) along the second direction (Y). The area of ​​the first side surfaces (411) is larger than the area of ​​the second side surfaces (412). In a battery pack (40), there is a gap between the two first side surfaces (411) of two adjacent battery cells (41). The second side surfaces (412) of the battery cell (41) are connected to the first beam (11), or the second side surfaces (412) of the battery cell (41) are connected to the partition beam (20). or, A separator (42) is provided between two adjacent battery cells (41) along a first direction (X), the separator (42) being strip-shaped and having at least one, or the separator (42) comprising a loop.

3. The battery module according to any one of claims 1 to 2, characterized in that, The battery module also includes a connecting plate (50), which is bent, and the second beam (12) and the partition beam (20) are connected by the connecting plate (50), and / or the second beam (12) and the first beam (11) are connected by the connecting plate (50).

4. The battery module according to claim 3, characterized in that, The second beam (12) includes multiple end plates (121), the two ends of which are respectively connected to the connecting plates (50) of two adjacent partition beams (20), or one end of the end plate (121) is connected to the connecting plate (50) of the first beam (11), and the other end of the end plate (121) is connected to the connecting plate (50) of the partition beam (20) adjacent to the first beam (11).

5. The battery module according to any one of claims 1 to 2, characterized in that, One end of the partition beam (20) extends beyond the second beam (12) and forms a protrusion (21), on which a first adapter (81) is provided for connecting to the vehicle body (100).

6. The battery module according to any one of claims 1 to 2, characterized in that, There are multiple partition beams (20), and at least two of the partition beams (20) extend beyond the second beam (12) on the same side. The portion of the partition beam (20) that protrudes from the second beam (12) forms a protrusion (21), and a placement space (22) is formed between adjacent protrusions (21).

7. A battery pack, characterized in that, include: The bottom shell (60) and top cover (70) interlock. A battery module is disposed between the bottom shell (60) and the top cover (70), wherein the battery module is the battery module according to any one of claims 1 to 6.

8. The battery pack according to claim 7, characterized in that, The battery pack also includes an adapter assembly (80) for connecting one end of the partition beam (20) to the bottom shell (60) and connecting the bottom shell (60) to the vehicle body (100).

9. The battery pack according to claim 8, characterized in that, The adapter assembly (80) includes a first adapter (81) and a second adapter (82). The first adapter (81) is disposed on the protrusion (21) of the partition beam (20) that protrudes from the second beam (12), and the first adapter (81) is connected to the bottom shell (60). The second adapter (82) is disposed on the surface of the bottom shell (60) that is away from the receiving space (30), and the first adapter (81) and the second adapter (82) are correspondingly disposed. The first adapter (81) and the second adapter (82) are connected, and the second adapter (82) is used to connect to the vehicle body (100).

10. The battery pack according to claim 9, characterized in that, The first adapter (81) includes a first connecting piece (811) and a second connecting piece (812), the first connecting piece (811) being connected to the protrusion (21) of the partition beam (20), and the second connecting piece (812) being connected to the surface of the bottom shell (60) facing the receiving space (30), the first connecting piece (811) and the second connecting piece (812) being connected.

11. The battery pack according to claim 10, characterized in that, The first connecting piece (811) includes a first segment (8111) and a second segment (8112). The first segment (8111) is connected to the surface of the protrusion (21) facing the second direction (Y). The second segment (8112) is set at an angle to the first segment (8111) and is used to connect with the second connecting piece (812).

12. The battery pack according to claim 11, characterized in that, The second connecting piece (812) includes a third segment (8121) and a fourth segment (8122). The third segment (8121) is connected to the surface of the bottom shell (60) facing the receiving space (30). The fourth segment (8122) is set at an angle to the third segment (8121) and is used to connect with the second segment (8112).

13. The battery pack according to claim 12, characterized in that, The bottom shell (60) includes a bottom plate (61), a side plate (62) connected to the bottom plate (61), and a first connecting flange (63) connected to the side plate (62). The second adapter (82) includes a fifth segment (821) and a sixth segment (822). The fifth segment (821) is connected to the side plate (62), and the sixth segment (822) is connected to the first connecting flange (63). The fifth segment (821) is used to connect with the third segment (8121), and the sixth segment (822) is connected to the first connecting flange (63) and the vehicle body (100).

14. The battery pack according to any one of claims 7 to 13, characterized in that, The battery pack also includes a heat exchange device (90) disposed between the battery module and the bottom shell (60). There are multiple partition beams (20). Among the multiple partition beams (20), at least two partition beams (20) have their ends on the same side extending beyond the second beam (12) and forming protrusions (21). A placement space (22) is formed between adjacent protrusions (21). The heat exchange device (90) includes a water inlet (91) located inside the placement space (22) or outside the placement space (22).

15. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 7 to 14.

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