A battery pack and vehicle

Abstract

The utility model provides a kind of battery pack and vehicle, the battery pack includes: shell, shell is equipped with accommodating cavity;Cold plate assembly, cold plate assembly is located in accommodating cavity, cold plate assembly includes bottom plate and side cold plate, bottom plate and side cold plate are enclosed to form cooling cavity;End plate, end plate is located in accommodating cavity, end plate is connected between two adjacent side cold plate, end plate and side cold plate are enclosed to form frame structure;Electric core, electric core is multiple, multiple electric core is located in cooling cavity, multiple electric core is distributed along the length direction of cooling cavity, the first side of each electric core is connected with bottom plate, at least one of the remaining side of each electric core is connected with side cold plate.Side cold plate in the above-mentioned scheme not only can cool electric core, can also replace longitudinal beam to support electric core, i.

Description

Technical Field

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

[0002] In existing technology, a battery pack contains multiple battery cells and a liquid cooling plate. The battery cells are stacked along a predetermined direction, and the liquid cooling plate is attached to the battery cells to dissipate heat. To provide stable support for the battery cells and the liquid cooling plate, the battery pack contains multiple support beams. The inclusion of these support beams not only increases the weight of the battery pack but also reduces its energy density to some extent.

[0003] There is currently no effective solution to the problems of large battery pack weight and low energy density in existing technologies. Utility Model Content

[0004] The main objective of this invention is to provide a battery pack and vehicle to solve the problems of large weight and low energy density of existing battery packs.

[0005] To achieve the above objectives, according to one aspect of the present invention, a battery pack is provided, comprising: a housing having a receiving cavity; a cold plate assembly disposed within the receiving cavity, the cold plate assembly including a bottom plate and side cold plates, the bottom plate and side cold plates surrounding to form a cooling cavity; an end plate disposed within the receiving cavity, the end plate being connected between two adjacent side cold plates, the end plate and the side cold plates surrounding to form a frame structure; and multiple battery cells disposed within the cooling cavity, the multiple battery cells being distributed along the length direction of the cooling cavity, a first side of each battery cell being connected to the bottom plate, and at least one of the remaining sides of each battery cell being connected to the side cold plates.

[0006] Furthermore, the side cold plate includes a first cold plate, which is disposed near the first side wall of the housing. The first cold plate is provided with a first mounting assembly, and the first cold plate is connected to the first side wall through the first mounting assembly.

[0007] Furthermore, the first mounting assembly includes: a first mounting member, which is connected to the side of the first cold plate near the first sidewall of the housing, and a gap is provided between the first mounting member and the first sidewall; and a second mounting member, one end of which is connected to the first mounting member, and the other end of which is connected to the inner side of the first sidewall.

[0008] Furthermore, the first mounting assembly also includes a third mounting member, which is disposed opposite to the second mounting member along the length direction of the first sidewall, and the third mounting member is connected to the outer side of the first sidewall.

[0009] Furthermore, the first mounting member includes a first protrusion formed by the first cold plate extending toward the first sidewall; the second mounting member includes a second protrusion formed along the direction from the first sidewall to the first cold plate, and the first protrusion is connected to the second protrusion.

[0010] Furthermore, there are two first cold plates, and the shell has two opposing first side walls. The two first cold plates are arranged in a one-to-one correspondence with the two first side walls. The side cold plates also include a second cold plate, which is disposed between the two first cold plates. One end of the second cold plate is connected to the bottom plate, and the other end of the second cold plate is connected to the top wall of the shell through a second mounting assembly.

[0011] Furthermore, the second mounting assembly includes: a connecting post, which is connected to the top surface of the second cold plate, a threaded hole in the middle of the connecting post, an external thread on the outer wall of the connecting post, and a boss on the outer circumferential surface of the connecting post, the boss abutting against the inner top wall of the housing; and a fastening nut, which is screwed to the connecting post and abutting against the outer top wall of the housing.

[0012] Furthermore, the cold plate assembly also includes: a partition plate disposed between two adjacent side cold plates, the partition plate being arranged parallel to the side cold plates, the partition plate dividing the cooling cavity into multiple chambers; at least a portion of the second side of the battery cell being connected to the side cold plates, at least a portion of the third side of the battery cell being connected to the partition plate, the second side and the third side being arranged opposite to each other.

[0013] Furthermore, cooling channels are provided within the partition plate.

[0014] Furthermore, the cooling channel of the partition plate is provided with a sealing structure at the end. In the length direction of the partition plate, the cross-sectional size of the sealing structure decreases along the end of the partition plate toward the end plate.

[0015] Furthermore, the battery pack also includes a water-cooling pipe; an installation space is formed between the end plate and the side wall of the housing, and the water-cooling pipe and part of the side cooling plate are located in the installation space; the side cooling plate is connected to the water-cooling pipe in the installation space through a first water nozzle.

[0016] Furthermore, the end plate is provided with a clearance hole, through which the second water nozzle on the partition plate extends into the installation space, and the second water nozzle is connected to the water cooling pipe.

[0017] Furthermore, the shell is a metal skin formed by a stamping process.

[0018] According to another aspect of the present invention, a vehicle is provided, the vehicle including a battery pack, the battery pack being the aforementioned battery pack.

[0019] Applying the technical solution of this utility model, a cooling cavity is formed by a base plate and side cold plates. Each battery cell is disposed within the cooling cavity, with a first side of each cell connected to the base plate and at least one side of each cell connected to the side cold plates. This ensures that each cell can dissipate heat through at least one side, guaranteeing sufficient heat dissipation. The side cold plates are connected to end plates to form a frame structure, with the side cold plates acting as longitudinal beams and the end plates as transverse beams, thus providing stable support for each battery cell. In this solution, the side cold plates not only cool the battery cells but also replace longitudinal beams for support, eliminating the need for additional longitudinal beams within the battery pack. This saves space, reduces the weight of the battery pack, and increases its energy density. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of the cold plate assembly of this utility model is shown;

[0022] Figure 2 A schematic diagram of the assembly of the cold plate assembly and the battery cell in this utility model is shown.

[0023] Figure 3 A schematic diagram of the assembly of the water-cooled pipe and the cold plate assembly in this utility model is shown.

[0024] Figure 4 A schematic diagram of the structure of the middle plate of this utility model is shown;

[0025] Figure 5 A schematic diagram of the lower shell structure of this utility model is shown;

[0026] Figure 6 An exploded view of the battery pack of this invention is shown;

[0027] Figure 7 This invention illustrates a schematic diagram of the connection structure between the lower shell and the cold plate assembly.

[0028] Figure 8 This invention illustrates a schematic diagram of the connection structure between the upper shell and the cold plate assembly.

[0029] Figure 9 A schematic diagram of the structure of the first mounting component in this utility model is shown;

[0030] Figure 10 A schematic diagram of the partition plate in this utility model is shown.

[0031] The above figures include the following reference numerals:

[0032] 10. Shell;

[0033] 11. Upper shell; 12. Lower shell;

[0034] 20. Base plate;

[0035] 30. Side cold-rolled steel plate;

[0036] 31. First cold-rolled plate; 311. First mounting assembly; 3111. First mounting piece; 3112. Second mounting piece; 3113. Third mounting piece; 32. Second cold-rolled plate; 321. Second mounting assembly; 3211. Connecting post; 3212. Fastening nut; 3213. Boss; 33. First water tap; 34. Second connecting seat; 35. Third connecting seat; 36. Fourth connecting seat; 37. Fifth connecting seat; 38. First connecting seat;

[0037] 40. Battery cells;

[0038] 50. End plate;

[0039] 51. Clearance hole; 52. Sixth connecting seat;

[0040] 60. Divider;

[0041] 61. Second water tap; 62. Sealing structure;

[0042] 70. Installation space;

[0043] 80. Water-cooled pipes;

[0044] 91. Rivet nut; 92. Screw. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0049] Combination Figures 1 to 10 As shown, a battery pack is provided according to a specific embodiment of this application.

[0050] Specifically, the battery pack includes: a housing 10, a cold plate assembly, an end plate 50, and battery cells 40. The housing 10 has a receiving cavity, and the cold plate assembly is disposed within the receiving cavity. The cold plate assembly includes a bottom plate 20 and side cold plates 30, which together form a cooling cavity. The end plate 50 is disposed within the receiving cavity and is connected between two adjacent side cold plates 30, forming a frame structure with the side cold plates 30. Multiple battery cells 40 are disposed within the cooling cavity and distributed along the length of the cooling cavity. The first side of each battery cell 40 is connected to the bottom plate 20, and at least one of the remaining sides of each battery cell 40 is connected to the side cold plate 30.

[0051] In the embodiments of this application, the base plate 20 and the side cold plate 30 form a cooling cavity, and each battery cell 40 is disposed within the cooling cavity. The first side of each battery cell 40 is connected to the base plate 20, and at least one side of each battery cell 40 is connected to the side cold plate 30. This means that each battery cell 40 can dissipate heat through at least one side, ensuring sufficient heat dissipation. The side cold plate 30 is connected to the end plate 50 to form a frame structure, whereby the side cold plate 30 acts as the longitudinal beam of the frame structure, and the end plate 50 acts as the transverse beam, thus providing stable support for each battery cell 40. In the above solution, the side cold plate 30 not only cools the battery cell 40 but also replaces the longitudinal beam to support it. This eliminates the need for additional longitudinal beams within the battery pack, saving space, reducing the weight of the battery pack, and increasing its energy density.

[0052] It should be noted that the housing 10 is mainly used to cover and shield the battery cell 40, while the bottom plate 20, the side cold plate 30, and the end plate 50 are used to support the battery cell 40.

[0053] Preferably, the base plate 20 is a bottom cold plate, meaning that the base plate 20 not only supports each battery cell 40 but also dissipates heat from each battery cell 40, further improving the heat dissipation performance of the battery pack. Further, the side cold plate 30 includes: a first cold plate 31, which is disposed near the first side wall of the housing 10, and the first cold plate 31 is provided with a first mounting assembly 311, which connects the first cold plate to the first side wall.

[0054] In the embodiments of this application, the first cold plate 31 is connected to the first side wall of the housing 10 through the first mounting assembly 311, so that the force on the cell 40 and the cold plate assembly can be transmitted to the housing 10 through the first mounting assembly 311, and then transmitted to the vehicle body by the housing 10, thereby enabling the battery pack to operate more stably.

[0055] Specifically, the first mounting assembly 311 includes a first mounting member 3111 and a second mounting member 3112. The first mounting member 3111 is connected to the side of the first cold plate 31 near the first sidewall of the housing 10, and a gap is provided between the first mounting member 3111 and the first sidewall. One end of the second mounting member 3112 is connected to the first mounting member 3111, and the other end of the second mounting member 3112 is connected to the first sidewall.

[0056] In the embodiments of this application, a gap is provided between the first mounting member 3111 and the first sidewall of the housing 10, that is, a gap is provided between the first cold plate 31 and the first sidewall of the housing 10, so as to allow slight displacement of the first mounting member 3111 and the first cold plate 31 when subjected to external force, thereby absorbing or mitigating external impact force and reducing damage caused by direct impact. In addition, the first mounting member 3111 and the first cold plate 31 may undergo thermal expansion and contraction when the temperature changes, and the gap provides a certain deformation space for the first mounting member 3111 and the first cold plate 31.

[0057] like Figure 6 , Figure 7 As shown, the housing 10 includes an upper shell 11 and a lower shell 12, which are detachably connected, forming a receiving cavity between them. A side cold plate 30 extends along the length of the housing 10. The side cold plate 30 and the bottom plate 20 are connected by rivet nuts 91, and the lower shell 12 is connected to the rivet nuts 91 by screws 92, thus connecting the lower shell 12 to the bottom plate 20 and the side cold plate 30.

[0058] like Figure 9 As shown, the housing 10 has two first sidewalls and two second sidewalls. The two first sidewalls are arranged opposite each other along the length direction of the housing 10, and the two second sidewalls are arranged opposite each other along the width direction of the housing 10. The first mounting member 3111 is a rectangular hollow structure, and the first mounting member 3111 is connected to the first cold plate 31 along the length direction of the first cold plate 31. The second mounting member 3112 is a "U"-shaped structure. One end of the second mounting member 3112 is connected to the inner side of the first sidewall of the lower housing 12 along the length direction of the lower housing 12, and the other end of the second mounting member 3112 is connected to the first mounting member 3111. The second mounting member 3112 is located below the first mounting member 3111.

[0059] As an alternative implementation method, such as Figure 1 , Figure 5 As shown, the first mounting component 3111 is a V-shaped structure formed on the first cold plate 31, and the second mounting component 3112 is an L-shaped structure.

[0060] Furthermore, the first mounting component 311 also includes a third mounting member 3113, which is disposed opposite to the second mounting member 3112 along the length direction of the first sidewall, and the third mounting member 3113 is connected to the outer side of the first sidewall.

[0061] In the embodiments of this application, the provision of the third mounting component increases the connection strength between the first cold plate 31 and the housing 10.

[0062] like Figure 9As shown in the figure, the third mounting member 3113 has an L-shaped structure. The third mounting member 3113 includes a first segment and a second segment arranged perpendicularly to each other. The first segment is connected to the outer side of the first side wall of the lower shell 12 along the length direction of the lower shell 12. The second segment, the flange of the lower shell 12 and the flange of the upper shell 11 are connected together to be connected to the vehicle body.

[0063] Preferably, the first mounting member 3111 includes a first protrusion formed by the first cold plate 31 extending toward the first side wall, and the second mounting member 3112 includes a second protrusion formed along the direction from the first side wall to the first cold plate 31. The first protrusion is connected with the second protrusion.

[0064] In the embodiment of the present application, the first protrusion of the first mounting member 3111 is integrally formed on the first cold plate 31, and the first mounting member 3111 is connected to the second mounting member through the first protrusion, so as to improve the connection strength between the first cold plate 31 and the housing 10, and further enable the force on the cell 40 and the cold plate assembly to be effectively transmitted to the housing 10 through the first mounting assembly 311. The first protrusion and the second protrusion both extend between the first side wall and the first cold plate 31, that is, both the first protrusion and the second protrusion are cantilever structures, which can buffer part of the force while transmitting the force. As shown in Figure 9 the figure, the first mounting member 3111 is a first protrusion integrally formed on the first cold plate 31, the second mounting member 3112 has a zigzag structure in the shape of the Chinese character "几", and the first mounting member 3111 is connected to the second protrusion of the second mounting member 3112 by bolts.

[0065] Further, there are two first cold plates 31, the housing 10 has two first side walls arranged opposite to each other, and the two first cold plates 31 are arranged in one-to-one correspondence with the two first side walls. The side cold plate 30 further includes a second cold plate 32 disposed between the two first cold plates 31. One end of the second cold plate 32 is connected to the bottom plate 20, and the other end of the second cold plate 32 is connected to the top wall of the housing 10 through the second mounting assembly 321.

[0066] In the embodiment of the present application, the second cold plate 32 is connected to the top wall of the housing 10 through the second mounting assembly 321, so as to enhance the connection strength between the housing 10 and the cold plate assembly.

[0067] As shown in Figure 1As shown, the battery pack has four side cooling plates 30, each comprising two first cooling plates 31 and two second cooling plates 32. One first cooling plate 31 is disposed near one of the first side walls of the housing 10, and the other first cooling plate 31 is disposed near the other first side wall of the housing 10. The two second cooling plates 32 are disposed between the two first cooling plates 31 and are spaced apart along the width direction of the housing 10. A cooling cavity is formed between two adjacent side cooling plates 30, thus the battery pack has a total of three cooling cavities.

[0068] like Figure 1 As shown, a plurality of second mounting components 321 are provided on the side of the second cold plate 32 away from the bottom plate 20. The plurality of second mounting components 321 are distributed at intervals along the length direction of the second cold plate 32, and the second cold plate 32 is connected to the upper shell 11 through the plurality of second mounting components 321.

[0069] Specifically, the second mounting assembly 321 includes a connecting post 3211 and a fastening nut 3212. The connecting post 3211 is connected to the top surface of the second cold plate 32. The connecting post 3211 has a threaded hole in its middle, external threads on its outer wall, and a boss 3213 on its outer circumferential surface. The boss 3213 abuts against the inner top wall of the housing 10. The fastening nut 3212 is screwed to the connecting post 3211 and abuts against the outer top wall of the housing 10.

[0070] In the embodiments of this application, the outer top wall of the housing 10 is sandwiched between the boss 3213 and the fastening nut 3212, and the connecting post 3211 can also be connected to the vehicle body through the threaded hole. That is, the cooperation between the connecting post 3211 and the fastening nut 3212 can realize the connection with the housing and the connection with the vehicle body. The structure is simple and the connection is convenient.

[0071] like Figure 8 As shown, the connecting post 3211 is welded to the top surface of the second cold plate 32. The outer circumferential surface of the connecting post 3211 is provided with an annular boss 3213, which abuts against the inner wall of the upper shell 11. Part of the connecting post 3211 extends beyond the upper shell 11 to the outside of the shell 10. The outer wall of the connecting post 3211 located outside the shell 10 is provided with external threads. The fastening nut 3212 is screwed to the connecting post 3211 located outside the shell 10. The fastening nut 3212 abuts against the inner wall of the upper shell 11, that is, the upper shell 11 is pressed between the boss 3213 and the fastening nut 3212.

[0072] like Figure 8 As shown, the upper shell 11 is connected to the vehicle body by bolts. The bolts pass through the threaded holes of the pre-set connection part and the connecting post 3211 on the vehicle body in sequence, so as to hang the battery pack on the vehicle body.

[0073] Preferably, the connecting column 3211 is integrally formed on the top surface of the second cold plate 32.

[0074] Furthermore, the cold plate assembly also includes: a partition plate 60, which is disposed between two adjacent side cold plates 30, and is arranged parallel to the side cold plates 30, dividing the cooling cavity into multiple chambers; at least a portion of the second side of the battery cell 40 is connected to the side cold plate 30, and at least a portion of the third side of the battery cell 40 is connected to the partition plate 60, with the second side and the third side arranged opposite to each other.

[0075] In the embodiments of this application, each cooling cavity can hold two rows of battery cells 40, and the battery cells 40 are supported by a partition plate 60 to improve the overall strength of the battery pack.

[0076] Preferably, the separator 60 is provided with a cooling channel. While supporting the battery cell 40, the separator 60 can also cool the battery cell 40, that is, the separator 60 also acts as a cold plate to improve the charging and discharging performance of the battery pack.

[0077] like Figure 1 , Figure 2 As shown, the partition plate 60 is located between two side cold plates 30. One end of the battery cell 40 is connected to the side cold plate 30, and the other end of the battery cell 40 is connected to the partition plate 60. The partition plate 60 is sandwiched between the two battery cells 40, and there is no connection between the partition plate 60 and the partition.

[0078] The battery cell 40 is connected to the base plate 20, the side cold plate 30, and the partition plate 60 via thermally conductive adhesive.

[0079] Furthermore, the end of the cooling channel of the partition plate 60 is provided with a sealing structure 62. In the length direction of the partition plate 60, the cross-sectional dimension of the sealing structure 62 decreases along the end of the partition plate 60 toward the end plate.

[0080] In the embodiments of this application, the sealing structure is used to block the cooling channel of the partition plate 60. The cross-sectional dimensions of the sealing structure 62 decrease along the end of the partition plate 60 toward the end plate to reduce the space occupied by the sealing structure of the partition plate 60. That is, no other components in the battery pack need to be modified to avoid the sealing structure of the partition plate 60.

[0081] like Figure 10 As shown, the sealing structure 62 is integrally formed at the end of the partition plate 60. Specifically, the sealing structure 62 is flattened by a cold pressing process, and the end of the sealing structure 62 is brazed to block the cooling channel.

[0082] Furthermore, the battery pack also includes a water-cooling pipe, and an installation space 70 is formed between the end plate 50 and the side wall of the housing 10. The water-cooling pipe 80 and part of the side cooling plate 30 extend into the installation space 70. The side cooling plate 30 is connected to the water-cooling pipe 80 in the installation space 70 through the first water nozzle 33.

[0083] In the embodiments of this application, the external water-cooling pipe 80 extends into the installation space 70 and connects to the side cold plate 30, that is, the same water-cooling pipe 80 can be connected to multiple side cold plates 30, thereby reducing the number of pipes and reducing the overall weight of the battery pack.

[0084] like Figures 1 to 5 As shown, there are multiple end plates 50. Adjacent first cold plates 31 and second cold plates 32 are connected by end plates 50, and two adjacent second cold plates 32 are connected by end plates 50. Sixth connecting seats 52 are provided at both ends of the end plates 50. Multiple first connecting seats 38 are provided on the lower shell 12, and the lower shell 12 is connected to the second cold plates 32 through the first connecting seats 38.

[0085] like Figures 1 to 5 As shown, the first end of the first cold plate 31 is provided with a second connecting seat 34, and the first end of the first cold plate 31 is connected to a sixth connecting seat 52 on the end plate 50 through the second connecting seat 34. The second end of the first cold plate 31 is provided with a third connecting seat 35, and the second end of the first cold plate 31 is connected to the sixth connecting seat 52 on the end plate 50 through the third connecting seat 35. An installation space 70 is formed between the end plate 50 and the side wall of the housing 10. The second end of the first cold plate 31 extends into the installation space 70, and the second end of the first cold plate 31 is connected to a water-cooling pipe 80 extending into the installation space 70 through a first water nozzle 33.

[0086] like Figures 1 to 5 As shown, the first end of the second cold plate 32 is provided with a fourth connecting seat 36, which connects the first end of the second cold plate 32 to a sixth connecting seat 52 on the end plate 50. The first end of the second cold plate 32 is also connected to a first connecting seat 38 on the lower shell 12 via the fourth connecting seat 36. The second end of the second cold plate 32 is provided with a fifth connecting seat 37, which connects the second end of the second cold plate 32 to the sixth connecting seat 52 on the end plate 50. The second end of the second cold plate 32 is also connected to the first connecting seat 38 on the lower shell 12 via the fifth connecting seat 37. An installation space 70 is formed between the end plate 50 and the side wall of the shell 10. The second end of the second cold plate 32 extends into the installation space 70 and is connected to a water-cooling pipe 80 extending into the installation space 70 via a first water nozzle 33.

[0087] Furthermore, such as Figure 3As shown, the end plate 50 is provided with a clearance hole 51, and the second water nozzle 61 on the partition plate 60 extends into the installation space 70 through the clearance hole 51. The second water nozzle 61 is connected to the water cooling pipe 80.

[0088] In the embodiments of this application, the external water cooling pipe 80 is connected to both the first water nozzle 33 of the side cooling plate 30 and the second water nozzle 61 of the partition plate 60, so as to reduce the number of pipes and further reduce the overall weight of the battery pack.

[0089] Furthermore, the housing 10 is a metal skin formed by a stamping process.

[0090] In embodiments of this application, the housing 10 is a metal skin to cover and shield the battery cell and cold plate assembly.

[0091] According to another specific embodiment of this application, a vehicle is provided, the vehicle including a battery pack, the battery pack being the battery pack in the above embodiment.

[0092] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0093] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: The housing (10) is provided with a receiving cavity; A cold plate assembly is disposed within the receiving cavity. The cold plate assembly includes a bottom plate (20) and a side cold plate (30). The bottom plate (20) and the side cold plate (30) surround and form a cooling cavity. End plate (50), the end plate (50) is disposed in the receiving cavity, the end plate (50) is connected between two adjacent side cold plates (30), and the end plate (50) and the side cold plates (30) form a frame structure; A battery cell (40) is provided in a plurality of the battery cells (40) and the plurality of the battery cells (40) are disposed in the cooling cavity. The first side of each battery cell (40) is connected to the base plate (20), and at least one of the remaining sides of each battery cell (40) is connected to the side cold plate (30). The side cold plate (30) includes a first cold plate (31), which is disposed near the first side wall of the housing (10). The first cold plate (31) is provided with a first mounting assembly (311), and the first cold plate (31) is connected to the first side wall through the first mounting assembly (311). The first installation component (311) includes: The first mounting component (3111) is connected to the side of the first cold plate (31) near the first side wall of the housing (10), and a gap is provided between the first mounting component (3111) and the first side wall. The second mounting component (3112) has one end connected to the first mounting component (3111) and the other end connected to the first sidewall.

2. The battery pack according to claim 1, characterized in that, The first installation component (311) also includes: The third mounting member (3113) is disposed opposite to the second mounting member (3112) along the length direction of the first sidewall, and the third mounting member (3113) is connected to the outer side of the first sidewall.

3. The battery pack according to claim 1, characterized in that, The first mounting member (3111) includes a first protrusion formed by the first cold plate (31) extending toward the first sidewall; the second mounting member (3112) includes a second protrusion formed along the direction from the first sidewall to the first cold plate (31), and the first protrusion is connected to the second protrusion.

4. The battery pack according to claim 1, characterized in that, There are two first cold plates (31), and the housing (10) has two opposing first sidewalls. The two first cold plates (31) are arranged in a one-to-one correspondence with the two first sidewalls. The side cold plates (30) further include: The second cold plate (32) is disposed between the two first cold plates (31). One end of the second cold plate (32) is connected to the bottom plate (20), and the other end of the second cold plate (32) is connected to the top wall of the housing (10) through the second mounting assembly (321).

5. The battery pack according to claim 4, characterized in that, The second installation component (321) includes: A connecting post (3211) is connected to the top surface of the second cold plate (32). The connecting post (3211) has a threaded hole in the middle and an external thread on the outer wall. A boss (3213) is provided on the outer circumferential surface of the connecting post (3211). The boss (3213) abuts against the inner top wall of the housing (10). A fastening nut (3212) is screwed to the connecting post (3211), and the fastening nut (3212) abuts against the outer top wall of the housing (10).

6. The battery pack according to claim 1, characterized in that, The cold plate assembly also includes: A partition plate (60) is disposed between two adjacent side cold plates (30), the partition plate (60) is arranged parallel to the side cold plates (30), and the partition plate (60) divides the cooling cavity into multiple chambers; At least a portion of the second side of the battery cell (40) is connected to the side cold plate (30), and at least a portion of the third side of the battery cell (40) is connected to the partition plate (60), with the second side and the third side disposed opposite to each other.

7. The battery pack according to claim 6, characterized in that, The partition plate (60) is provided with a cooling channel.

8. The battery pack according to claim 7, characterized in that, The cooling channel of the partition plate (60) is provided with a sealing structure (62) at the end. In the length direction of the partition plate (60), the cross-sectional size of the sealing structure (62) decreases along the end of the partition plate (60) toward the end plate (50).

9. The battery pack according to claim 7, characterized in that, The battery pack also includes a water cooling pipe (80). An installation space (70) is formed between the end plate (50) and the side wall of the housing (10), and the water cooling pipe (80) and part of the side cooling plate (30) are located in the installation space (70); The side cold plate (30) is connected to the water cooling pipe (80) in the installation space (70) through the first water nozzle (33).

10. The battery pack according to claim 9, characterized in that, The end plate (50) is provided with a clearance hole (51). The second water nozzle (61) on the partition plate (60) extends into the installation space (70) through the clearance hole (51). The second water nozzle (61) is connected to the water cooling pipe (80).

11. The battery pack according to any one of claims 1-10, characterized in that, The shell (10) is a metal skin formed by stamping process.

12. A vehicle comprising a battery pack, characterized in that, The battery pack is the battery pack according to any one of claims 1-11.

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