Battery assembly and vehicle

Abstract

The utility model provides a battery assembly and a vehicle, and relates to the technical field of batteries. The battery assembly comprises a shell, a battery cell assembly and a heat management module, the shell is provided with a containing cavity, the battery cell assembly is arranged in the containing cavity, the shell comprises a frame and a cross beam, the two ends of the cross beam are connected with the two opposite sides of the frame respectively, and the containing cavity is divided into a plurality of containing areas; the battery cell assembly comprises a plurality of battery cell modules, and the plurality of battery cell modules are respectively positioned in the plurality of accommodating areas; the heat management module comprises a heating film; the heating film is positioned at the bottom of the accommodating cavity and is at least connected with the battery cell modules in the two accommodating areas; a boss is arranged at the bottom of the containing cavity, and the cross beam abuts against the upper end face of the boss so that an avoiding notch can be formed among the side wall of the boss, the bottom wall of the cross beam and the bottom of the containing cavity. The heating film is arranged in the avoiding notch in a penetrating manner, so that the structural strength of the cross beam is improved, and the structural strength of the whole battery assembly shell is further improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery assembly and a vehicle. Background Technology

[0002] New energy vehicles have rapidly become widespread. Electric new energy vehicles consist of three core modules: electric drive, battery, and electronic control. The battery pack, as an energy storage module, is used to deliver electrical energy to the electric drive, enabling the electric drive to propel the vehicle.

[0003] In related technologies, the battery assembly of new energy vehicles typically includes components such as a battery casing, cell modules, and a thermal management system. The cell modules and electrical components are all housed inside the battery casing, while the thermal management system regulates the operating temperature of the cell modules. The thermal management system includes heating films, which can be attached to the surface of the cell modules.

[0004] However, currently, when installing crossbeams inside the battery assembly, the crossbeams need to avoid the area where the heating film is located, resulting in relatively weak structural strength of the crossbeams. Utility Model Content

[0005] This application provides a battery assembly and a vehicle to solve the technical problem that the crossbeams installed inside the current battery assembly need to avoid the area where the heating diaphragm is set, resulting in weak structural strength of the crossbeams.

[0006] In a first aspect, this application provides a battery assembly including a housing, a cell assembly, and a thermal management module. The housing has a receiving cavity, and the cell assembly is disposed within the receiving cavity.

[0007] The housing includes a frame and a crossbeam. The two ends of the crossbeam are connected to the opposite sides of the frame and divide the cavity into multiple receiving areas. The battery cell assembly includes multiple battery cell modules, which are located in the multiple receiving areas. The thermal management module includes a heating film located at the bottom of the cavity and connected to the battery cell modules in at least two receiving areas. The bottom of the cavity has a boss, and the crossbeam abuts against the upper surface of the boss to form a clearance gap between the side wall of the boss, the bottom wall of the crossbeam, and the bottom of the cavity. The heating film passes through the clearance gap.

[0008] The battery assembly provided in this application embodiment has a boss inside the housing. The boss forms a clearance notch at the bottom of the receiving cavity for the heating film to pass through. The crossbeam can abut and connect above the boss. The crossbeam itself does not need to be processed to form a clearance structure, thereby improving the structural strength of the crossbeam and thus improving the structural strength of the entire battery assembly housing.

[0009] As an optional implementation, the boss may include a first boss and a second boss, the first boss and the second boss being spaced apart, and the clearance notch being located between the first boss and the second boss.

[0010] This design allows the beam to be supported by multiple bosses, improving the reliability of beam installation.

[0011] As an optional implementation, there are two second protrusions, which are distributed on both sides of the first protrusion and form clearance notches on both sides of the first protrusion; two heating films are inserted between two adjacent receiving areas, and the two heating films are respectively inserted through the clearance notches on both sides of the first protrusion.

[0012] With this configuration, multiple heating films can be inserted between the two containment areas, improving the heating efficiency of the battery cell module.

[0013] As an alternative implementation, the top of the crossbeam is provided with a mounting hole, and the top of the boss is provided with a threaded hole; the battery assembly may also include a first fastener, which passes through the mounting hole and connects to the threaded hole.

[0014] This design can improve the structural strength of the connection between the beam and the boss.

[0015] As an optional implementation, the battery assembly may further include a first connector and a second fastener. The first connector is connected to the inner sidewall of the frame opposite to the end of the crossbeam and protrudes into the receiving cavity. The end of the crossbeam covers the outside of the first connector. The crossbeam is connected to the first connector by the second fastener.

[0016] This configuration allows for quick and easy installation of the crossbeams into the battery cell modules and heating film, improving assembly convenience.

[0017] As an optional implementation, the housing may further include longitudinal beams, and transverse beams extending along the width of the frame, with the longitudinal beams extending along the length of the frame; the transverse beams have a first notch at the position where they intersect with the longitudinal beams, and the longitudinal beams have a second notch at the position where they intersect with the transverse beams, with the first notch and the second notch being opposite to each other.

[0018] The battery assembly also includes a second connector, which is connected to the top surfaces of both the crossbeam and the longitudinal beam.

[0019] This design can improve the strength and reliability of the connection between the crossbeams and longitudinal beams while avoiding interference between them.

[0020] As an alternative implementation, the first end of the crossbeam is rotatably connected to the first side of the frame, and the second end of the crossbeam is detachably connected to the second side of the frame.

[0021] This design allows the crossbeam to be opened when the heating film needs to be assembled, improving the ease of assembling the heating film and the battery cell module.

[0022] As an optional implementation, the heating film may include a heating part and a connecting section. Each heating film has at least two heating parts, and the connecting section is connected between the two heating parts. The heating parts are bonded to the bottom of the battery cell module, and the connecting section passes through the clearance notch. The width of the heating part is greater than the width of the connecting section.

[0023] This setup increases the support area of ​​the boss on the crossbeam without affecting the laying of the heating film.

[0024] Secondly, this application provides a vehicle that includes the battery assembly described in any of the above-mentioned technical solutions.

[0025] This application provides a battery assembly and a vehicle. The battery assembly includes a housing, a cell assembly, and a thermal management module. The housing has a receiving cavity, and the cell assembly is disposed within the receiving cavity. The housing includes a frame and a crossbeam. The two ends of the crossbeam are respectively connected to opposite sides of the frame and divide the receiving cavity into multiple receiving areas. The cell assembly includes multiple cell modules, which are respectively located within the multiple receiving areas. The thermal management module includes a heating film located at the bottom of the receiving cavity and connected to the cell modules in at least two receiving areas. A boss is provided at the bottom of the receiving cavity, and the crossbeam abuts against the upper end face of the boss, so that a clearance gap is formed between the side wall of the boss, the bottom wall of the crossbeam, and the bottom of the receiving cavity. The heating film passes through the clearance gap, thereby improving the structural strength of the crossbeam and thus improving the structural strength of the entire battery assembly housing.

[0026] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that the battery assembly and vehicle provided by this application can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the battery assembly provided in an embodiment of this application;

[0029] Figure 2 An internal view of the battery assembly provided in an embodiment of this application;

[0030] Figure 3An exploded view of the battery assembly provided in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the battery assembly housing provided in the embodiments of this application;

[0032] Figure 5 A top view of the housing of the battery assembly provided in an embodiment of this application;

[0033] Figure 6 An exploded view of the housing of the battery assembly provided in the embodiments of this application;

[0034] Figure 7 for Figure 6 A partial view of position A in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10-Battery assembly;

[0037] 100 - Housing; 101 - Receiving cavity; 101a - First chamber; 101b - Second chamber; 102 - Receiving area; 103 - Boss; 103a - First boss; 103b - Second boss; 104 - Clearance notch; 110 - Frame; 111 - Crossbeam; 1111 - First notch; 112 - Longitudinal beam; 1121 - Second notch; 113 - Separator beam; 120 - Top cover; 130 - Bottom guard plate; 140 - First fastener; 150 - First connector; 160 - Second fastener; 170 - Second connector;

[0038] 200 - Battery cell assembly; 210 - Battery cell module;

[0039] 300 - Thermal management module; 310 - Cold plate; 320 - Heating film;

[0040] 400 - Battery Management Module. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0043] Secondly, it should be noted that in the description of this application, the terms "front", "rear", "left", "right", "up", "down", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0044] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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 the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] As a crucial core component, the battery pack for new energy vehicles faces increasingly stringent requirements regarding performance, energy density, and safety. A typical battery pack for a new energy vehicle includes a battery casing, cell modules, and a thermal management system. The cell modules and electrical components are housed inside the battery casing, while the thermal management system regulates the operating temperature of the cell modules. The thermal management system includes heating diaphragms, which can be attached to the surface of the cell modules.

[0047] However, currently, when installing the crossbeam inside the battery assembly, the crossbeam needs to avoid the area where the heating film is set. The crossbeam has relatively weak structural strength. In addition, the heating film needs to pass through the crossbeam when it is applied, and the heating film is prone to deformation and damage.

[0048] To address the aforementioned issues, this application provides a battery assembly and vehicle. By incorporating a separate support structure within the housing, a clearance notch is formed at the bottom of the receiving cavity to allow the heating film to pass through. A crossbeam abuts and connects to the top of the boss. The crossbeam itself does not require machining to form a clearance structure, thereby improving its structural strength and consequently enhancing the overall structural strength of the battery assembly housing. Furthermore, the crossbeam can be installed after the heating film is applied, preventing deformation and damage to the heating film.

[0049] The technical solution of this application will be described in detail below through specific embodiments.

[0050] Figure 1 This is a schematic diagram of the battery assembly provided in an embodiment of this application; Figure 2 An internal view of the battery assembly provided in an embodiment of this application; Figure 3 An exploded view of the battery assembly provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the battery assembly housing provided in the embodiments of this application; Figure 5 A top view of the housing of the battery assembly provided in an embodiment of this application; Figure 6 An exploded view of the housing of the battery assembly provided in the embodiments of this application; Figure 7 for Figure 6 A partial view of position A in the middle.

[0051] like Figures 1 to 7 As shown in the illustration, this application provides a battery assembly 10, which includes a housing 100, a cell assembly 200, and a thermal management module 300. The housing 100 has a receiving cavity 101, and the cell assembly 200 is disposed within the receiving cavity 101. The cell assembly 200 is used to store electrical energy. The thermal management module 300 is used to regulate and manage the operating environment temperature of the cell assembly 200.

[0052] The housing 100 includes a frame 110 and a crossbeam 111. The two ends of the crossbeam 111 are connected to opposite sides of the frame 110, dividing the receiving cavity 101 into multiple receiving areas 102. The battery cell assembly 200 includes multiple battery cell modules 210, each located within one of the multiple receiving areas 102. The thermal management module 300 includes a heating film 320, located at the bottom of the receiving cavity 101 and connected to at least two of the battery cell modules 210 within the receiving areas 102.

[0053] In some embodiments, the bottom of the receiving cavity 101 is provided with a boss 103, and the crossbeam 111 abuts against the upper end face of the boss 103, so that a clearance gap 104 is formed between the side wall of the boss 103, the bottom wall of the crossbeam 111 and the bottom of the receiving cavity 101, and the heating film 320 passes through the clearance gap 104.

[0054] Understandably, multiple battery cell modules 210 can be connected in series. The crossbeams 111 between the inner sidewalls of the frame 110 can improve the structural strength of the housing 100 and prevent the housing 100 from undergoing excessive deformation under impact and compression. Supporting the frame 110 with the crossbeams 111 can improve the safety performance of the battery assembly 10.

[0055] In this embodiment, the heating film 320 can heat the battery cell modules 210 in two adjacent accommodating areas 102. The edge heating film 320 is connected to the electronic components of the battery assembly 10 within its coverage area. A boss 103 is provided at the bottom of the accommodating cavity 101. This allows the heating film 320, laid at the bottom of the accommodating cavity 101, to pass through the clearance notch 104, preventing obstruction of the heating film 320's laying path. It also supports the crossbeam 111, improving the reliability of the crossbeam 111's installation.

[0056] For example, the boss 103 can be connected to the bottom of the receiving cavity 101 by means of welding or bolt connection.

[0057] It should be noted that in the battery assembly 10 provided in this application, by providing a boss 103 inside the housing 100, the boss 103 forms a clearance notch 104 at the bottom of the receiving cavity 101 for the heating film 320 to pass through, and the crossbeam 111 can abut and connect above the boss 103. The crossbeam 111 itself does not need to be processed to form a clearance structure, thereby improving the structural strength of the crossbeam 111, and thus improving the structural strength of the entire battery assembly 10 housing 100.

[0058] The following provides a detailed description of the specific distribution of the boss 103 and the connection method between the crossbeam 111 and the boss 103.

[0059] In one possible implementation, the boss 103 may include a first boss 103a and a second boss 103b, with the first boss 103a and the second boss 103b spaced apart. The clearance notch 104 is located between the first boss 103a and the second boss 103b, so that the crossbeam 111 can be supported by multiple bosses 103, thereby improving the installation reliability of the crossbeam 111.

[0060] In some embodiments, there are two second protrusions 103b, which are distributed on both sides of the first protrusion 103a, and clearance notches 104 are formed on both sides of the first protrusion 103a. Two heating films 320 are inserted between two adjacent receiving areas 102, and the two heating films 320 are respectively inserted through the clearance notches 104 on both sides of the first protrusion 103a. Inserting multiple heating films 320 between two receiving areas 102 can improve the heating efficiency of the cell module 210.

[0061] It is understandable that the length of the first protrusion 103a can be greater than the length of the second protrusion 103b, and the first protrusion 103a is located between the two heating films 320.

[0062] For example, the heights of the first boss 103a and the second boss 103b can be equal.

[0063] In some embodiments, the top of the crossbeam 111 is provided with a mounting hole, and the top of the boss 103 is provided with a threaded hole. The battery assembly 10 may also include a first fastener 140, which passes through the mounting hole and connects to the threaded hole, thereby improving the structural strength of the connection between the crossbeam 111 and the boss 103.

[0064] For example, there can be multiple mounting holes and threaded holes, and multiple mounting holes and multiple threaded holes can be set one-to-one.

[0065] In some embodiments, the battery assembly 10 may further include a first connector 150 and a second fastener 160. The first connector 150 is connected to the inner sidewall of the frame 110 opposite to the end of the crossbeam 111, and protrudes into the receiving cavity 101. The end of the crossbeam 111 covers the outer side of the first connector 150. The crossbeam 111 is connected to the first connector 150 via the second fastener 160. The crossbeam 111 via the first connector 150 allows for quick and convenient installation of the cell module 210 and the heating film 320, improving assembly convenience.

[0066] It is understandable that first connectors 150 can be connected to the inner walls of opposite sides of the frame 110, and the two ends of the crossbeam 111 are respectively connected to the first connectors on both sides of the frame 110. During the assembly of the battery assembly 10, a heating film 320 can be first attached to the bottom of the receiving cavity 101, and then the crossbeam 111 can be installed.

[0067] For example, the first connector 150 may have a "T"-shaped structure, and the first connector 150 may be connected to the inner wall of the frame 110 by fasteners such as bolts. The portion of the first connector 150 protruding into the receiving cavity 101 may have a threaded hole, and the second fastener 160 may be a bolt. The second fastener 160 passes through the crossbeam 111 and is screwed into the threaded hole on the first connector 150 to fix the crossbeam 111 to the first connector 150.

[0068] It should be noted that the portion of the first connector 150 protruding into the receiving cavity 101 is covered by the end of the crossbeam 111, that is, the protruding portion of the first connector 150 can be covered by the crossbeam 111, and the first connector 150 can play a role in limiting and pre-positioning the installation of the crossbeam 111.

[0069] In some embodiments, the housing 100 may further include an upper cover 120 and a bottom cover 130, which are respectively connected to the upper and lower sides of the frame 110 and together form a receiving cavity 101.

[0070] It can be understood that the upper surface of the upper cover 120 and the frame 110 are connected by fasteners such as bolts, and the contour shape of the upper cover 120 can match the contour shape of the frame. The lower surface of the bottom guard plate 130 and the frame 110 are connected by fasteners such as bolts, and the contour shape of the bottom guard plate 130 can match the contour shape of the frame 110.

[0071] Exemplarily, the frame 110 can be fixed by splicing profiles, and the frame 110 can be a square or an approximately square structure. The cross-section of the profile of the frame 110 can be a "mouth" shape, a "day" shape, etc., and the embodiments of the present application do not make specific limitations in this regard.

[0072] It should be noted that the materials of the frame 110, the upper cover 120 and the bottom guard plate 130 can be metals or alloys such as iron and aluminum, and the embodiments of the present application do not make specific limitations in this regard.

[0073] In some embodiments, the housing 100 may further include a partition beam 113, and both ends of the partition beam 113 are respectively connected to opposite sides of the frame 110. The partition beam 113 is configured to divide the accommodation cavity 101 into a first cavity 101a and a second cavity 101b arranged along the length direction of the housing 100. The battery cell assembly 200 is located in the first cavity 101a. The battery assembly 10 may further include a battery management module 400, and the battery management module 400 is disposed in the second cavity 101b.

[0074] It can be understood that the cross beam 111 is disposed in the first cavity 101a and divides the interior of the first cavity 101a into multiple accommodation areas 102. The connection terminals of the heating film 320 can pass through the partition beam 113 and be connected to the battery management module 400.

[0075] Define the length direction of the housing 100 as the X direction and the width direction of the housing 100 as the Y direction. The partition beam 113 extends along the Y direction and divides the accommodation cavity 101 into a first cavity 101a and a second cavity 101b arranged along the X direction.

[0076] It can be understood that both ends of the partition beam 113 can be connected to the inner edges of both sides of the frame by fasteners such as bolts, or both ends of the partition beam 113 can be welded to the inner edges of both sides of the frame respectively. The embodiments of the present application do not limit the specific connection manner of the partition beam 113 and the frame.

[0077] In some embodiments, the housing 100 may further include a longitudinal beam 112, the cross beam 111 extends along the width direction of the frame 110, and the longitudinal beam 112 extends along the length of the frame 110; the cross beam 111 has a first notch 1111 at the position where it intersects with the longitudinal beam 112, and the longitudinal beam 112 has a second notch 1121 at the position where it intersects with the cross beam 111, and the first notch 1111 and the second notch 1121 are opposite to each other.

[0078] Among them, the battery assembly 10 further includes a second connecting member 170, and the second connecting member 170 is simultaneously connected to the top surfaces of the cross beam 111 and the longitudinal beam 112, so as to improve the connection strength and reliability between the cross beam 111 and the longitudinal beam 112 while avoiding interference between the cross beam 111 and the longitudinal beam 112.

[0079] It can be understood that the longitudinal beam 112 and the cross beam 111 can divide the first chamber 101a into a "field" - shaped structure, thereby forming four accommodating areas 102. The heating film 320 can extend along the X - direction and cover partial areas of two accommodating areas 102 on both sides of the cross beam 111.

[0080] In a possible implementation manner, the first end of the cross beam 111 is rotatably connected to the first side of the frame 110, and the second end of the cross beam 111 is detachably connected to the second side of the frame 110. In this way, the cross beam 111 can be opened when the heating film 320 needs to be assembled, improving the assembly convenience of the heating film 320 and the battery cell module 210.

[0081] It can be understood that a rotating shaft hole is provided on one of the end of the cross beam 111 and the inner wall of the frame 110, and a rotating shaft is provided on the other. The cross beam 111 is rotatably connected to the frame 110 by the rotating shaft passing through the rotating shaft hole.

[0082] It should be noted that when the cross beam 111 is rotatably connected to the frame 110, during the production and processing process, the assembly connection between the cross beam 111 and the frame 110 can be completed first. When the heating film 320 and the battery cell module 210 are installed, only need to rotate the cross beam 111 so that there is no blockage between the two accommodating areas 102.

[0083] In some embodiments, the heating film 320 may include a heating portion and a connecting section. Each heating film 320 has at least two heating portions, and the connecting section is connected between the two heating portions. The heating portion is bonded to the bottom of the battery cell module 210, and the connecting section passes through the avoidance notch 104. The width of the heating portion is greater than the width of the connecting section, so as to increase the supporting area of the boss 103 on the cross beam 111 without affecting the laying of the heating film 320.

[0084] Exemplarily, the heating film 320 may be a sheet - like structure, and a resistance wire is arranged in the sheet - like heating film 320. When an electric current is passed through the resistance wire, heat can be generated and the heat can be conducted to the battery cell assembly 200.

[0085] In addition, when the resistance wires in the heating film 320 are arranged, they can pass through the connecting section from one heating portion and extend to another heating portion, and the resistance wires can be reciprocally coiled between the two heating portions in the heating film 320 to expand the heating area of the heating film 320.

[0086] In some embodiments, the heating film 320 may extend along the length of the housing 100. The heating film 320 covers at least a portion of the two receiving areas 102 arranged along the length of the housing 100.

[0087] It is understood that each accommodating cavity can hold one battery cell module 210, and one heating part of the heating film 320 corresponds to one battery cell module 210. The battery cell module 210 may include multiple battery cell units.

[0088] In this embodiment, the thermal management module 300 may further include a cold plate 310. When the battery assembly 10 is in a high-temperature environment, or when the cell assembly 200 continuously experiences a rising operating temperature, the cold plate 310 is used to cool the cell assembly 200, absorbing and removing heat from the cell assembly 200 to lower its temperature. When the battery assembly 10 is in a low-temperature environment, or when the vehicle is first started, in order to quickly bring the cell assembly 200 to its operating temperature, the heating film 320 is used to generate heat and increase the temperature of the cell assembly 200.

[0089] It is understood that the cold plate 310 is disposed at the bottom of the receiving cavity 101. The heating assembly includes a heating film 320, which is adhered to the side of the cold plate 310 facing the cell assembly 200, and the side of the heating film 320 facing the cell assembly 200 is in contact with the bottom side of the cell assembly 200.

[0090] For example, the boss 103 can be attached to the surface of the cold plate 310. The boss 103 can be welded to the cold plate 310.

[0091] In some embodiments, the heating film 320 is bonded between the cold plate 310 and the battery cell assembly 200, with its upper and lower surfaces bonded to the cold plate 310 and the battery cell assembly 200, respectively. When the battery cell assembly 200 needs cooling, the cold plate 310 can absorb the heat transferred from the battery cell assembly 200 through thermal conduction, and the heating film 320 does not operate. When the battery cell assembly 200 needs heating, the heating film 320 generates heat through electrical heating and transfers the heat to the battery cell assembly 200 to raise its operating temperature, and the cold plate 310 does not operate.

[0092] For example, the cold plate 310 can be cooled by refrigerant, that is, refrigerant is introduced into the cold plate 310, and the temperature is reduced by the phase change of the refrigerant, and the heat of the battery cell assembly 200 is absorbed.

[0093] For example, the heating film 320 and the cold plate 310 can be bonded together with thermally conductive adhesive, which can improve the heat transfer efficiency and reduce heat loss.

[0094] It should be noted that in the battery assembly 10 provided in this application embodiment, through the structural design of the thermal management module 300 and the design of the arrangement position of the thermal management module 300, when the temperature of the cell assembly 200 is high and needs to be cooled, the cold plate 310 absorbs the heat of the cell module 210. When the temperature of the cell assembly 200 is low and needs to be heated, the heating film 320 is on the bottom side of the cell assembly 200 and has a larger contact area, which can quickly increase the temperature of the cell assembly 200. This improves the internal space utilization of the battery assembly 10 and the thermal management efficiency of the battery assembly 10.

[0095] This application also provides a vehicle that may include the battery assembly 10 described above. The vehicle provided in this application can be a new energy vehicle, including but not limited to pure electric vehicles, hybrid electric vehicles (plug-in, non-plug-in, etc.), hydrogen fuel cell vehicles, etc., and this application does not specifically limit its scope.

[0096] It is understood that the vehicle provided in this application embodiment also includes an electric drive system, and the battery assembly 10 can supply power to the electric drive system so that the electric drive system can drive the vehicle.

[0097] The vehicle provided in this application embodiment has all the technical solutions and all the technical effects of the aforementioned battery assembly 10, which will not be repeated here.

[0098] This application provides a battery assembly and a vehicle. The battery assembly includes a housing, a cell assembly, and a thermal management module. The housing has a receiving cavity, and the cell assembly is disposed within the receiving cavity. The housing includes a frame and a crossbeam. The two ends of the crossbeam are respectively connected to the opposite sides of the frame, dividing the receiving cavity into multiple receiving areas. The cell assembly includes multiple cell modules, which are respectively located within the multiple receiving areas. The thermal management module includes a heating film located at the bottom of the receiving cavity and connected to the cell modules in at least two receiving areas. A boss is provided at the bottom of the receiving cavity, and the crossbeam abuts against the upper end face of the boss to form a clearance notch on the side of the boss. The heating film passes through the clearance notch, thereby improving the structural strength of the crossbeam and thus improving the structural strength of the entire battery assembly housing.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery assembly (10), characterized in that, The battery assembly (10) includes a housing (100), a cell assembly (200), and a thermal management module (300). The housing (100) has a receiving cavity (101), and the cell assembly (200) is disposed in the receiving cavity (101). The housing (100) includes a frame (110) and a crossbeam (111), the two ends of which are connected to opposite sides of the frame (110) and divide the receiving cavity (101) into multiple receiving areas (102); the battery cell assembly (200) includes multiple battery cell modules (210), which are respectively located within the multiple receiving areas (102); the thermal management module (300) includes a heating film (320). The battery cell module (210) is located at the bottom of the receiving cavity (101) and is connected to at least two of the receiving areas (102); the bottom of the receiving cavity (101) is provided with a boss (103), and the crossbeam (111) abuts against the upper end face of the boss (103) so that a clearance gap (104) is formed between the side wall of the boss (103), the bottom wall of the crossbeam (111) and the bottom of the receiving cavity (101); the heating film (320) passes through the clearance gap (104).

2. The battery assembly (10) according to claim 1, characterized in that, The boss (103) includes a first boss (103a) and a second boss (103b), the first boss (103a) and the second boss (103b) are spaced apart, and the clearance notch (104) is located between the first boss (103a) and the second boss (103b).

3. The battery assembly (10) according to claim 2, characterized in that, There are two second protrusions (103b), which are distributed on both sides of the first protrusion (103a) and form the avoidance notches (104) on both sides of the first protrusion (103a); two heating films (320) are inserted between two adjacent receiving areas (102), and the two heating films (320) are respectively inserted into the avoidance notches (104) on both sides of the first protrusion (103a).

4. The battery assembly (10) according to any one of claims 1-3, characterized in that, The top of the crossbeam (111) is provided with a mounting hole, and the top of the boss (103) is provided with a threaded hole; the battery assembly (10) also includes a first fastener (140), which passes through the mounting hole and connects to the threaded hole.

5. The battery assembly (10) according to any one of claims 1-3, characterized in that, The battery assembly (10) further includes a first connector (150) and a second fastener (160). The first connector (150) is connected to the inner sidewall of the frame (110) opposite to the end of the crossbeam (111). The first connector (150) protrudes into the receiving cavity (101). The end of the crossbeam (111) covers the outside of the first connector (150). The crossbeam (111) is connected to the first connector (150) by the second fastener (160).

6. The battery assembly (10) according to any one of claims 1-3, characterized in that, The housing (100) further includes a longitudinal beam (112), a transverse beam (111) extending along the width direction of the frame (110), and the longitudinal beam (112) extending along the length of the frame (110); the transverse beam (111) has a first notch (1111) at the position where it intersects with the longitudinal beam (112), and the longitudinal beam (112) has a second notch (1121) at the position where it intersects with the transverse beam (111), with the first notch (1111) and the second notch (1121) being opposite to each other; The battery assembly (10) also includes a second connector (170) which is connected to the top surfaces of both the crossbeam (111) and the longitudinal beam (112).

7. The battery assembly (10) according to any one of claims 1-3, characterized in that, The first end of the crossbeam (111) is rotatably connected to the first side of the frame (110), and the second end of the crossbeam (111) is detachably connected to the second side of the frame (110).

8. The battery assembly (10) according to any one of claims 1-3, characterized in that, The heating film (320) includes a heating part and a connecting section. Each heating film (320) has at least two heating parts. The connecting section is connected between two heating parts. The heating parts are bonded to the bottom of the battery cell module (210). The connecting section passes through the clearance notch (104).

9. The battery assembly (10) according to claim 8, characterized in that, The width of the heating element is greater than the width of the connecting section.

10. A vehicle, characterized in that, Includes the battery assembly (10) according to any one of claims 1-9.

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