Battery assembly and vehicle

Abstract

The present application relates to the technical field of batteries, and provides a battery assembly and a vehicle. The battery assembly comprises a housing, a battery cell assembly, and a thermal management module. The housing is provided with an accommodating cavity; battery cell modules are arranged in the accommodating cavity; and the thermal management module comprises a cooling assembly and a heating assembly. The cooling assembly comprises a cold plate, and the cold plate is arranged at the bottom of the accommodating cavity; the heating assembly comprises heating films, and the heating films are adhered to the side of the cold plate facing the battery cell assembly; the sides of the heating films facing the battery cell assembly are in contact with the bottom side of the battery cell assembly; and the heating films have a larger contact area at the bottom side of the battery cell assembly, so that the temperature of the battery cell assembly can be quickly increased, thereby improving the internal space utilization rate of the battery assembly while improving the thermal management efficiency of the battery assembly.

Description

Battery assembly and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202423250781.8, filed on December 26, 2024, entitled "Battery Assembly and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and more particularly to a battery assembly and a vehicle. Background Technology

[0003] New energy vehicles have rapidly become widespread, and electric new energy vehicles consist of three core modules: electric drive, battery, and electronic control. As a crucial core component, the battery pack currently faces increasingly stringent requirements regarding its performance, energy density, and safety.

[0004] In related technologies, the battery assembly of new energy vehicles typically includes a battery casing, cell modules, and electrical components such as a battery management system. The cell modules and electrical components are all housed inside the battery casing. A thermal management module is also required in the battery assembly to control its temperature in the operating environment. For example, water-cooling pipes are used to cool the cell modules, and heating films are used to heat the cell modules.

[0005] However, the thermal management modules in current battery packs have low efficiency in cooling and heating the cell modules, resulting in poor thermal management performance.

[0006] Utility Model Content

[0007] In view of the above problems, this application provides a battery assembly and vehicle to solve the technical problem that the thermal management module in the current battery assembly has low cooling and heating efficiency for the cell module and poor thermal management effect.

[0008] 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.

[0009] The thermal management module includes a cooling component and a heating component. The cooling component includes a cold plate disposed at the bottom of the receiving cavity. The heating component includes a heating film, which is adhered to the side of the cold plate facing the battery cell assembly. The side of the heating film facing the battery cell assembly is in contact with the bottom side of the battery cell assembly.

[0010] The battery assembly provided in this application embodiment, through the structural design and placement design of the thermal management module, allows the cold plate to absorb the heat of the battery cell module when the temperature of the battery cell module is high and needs to be cooled, and the heating film on the bottom side of the battery cell module has a larger contact area when the temperature of the battery cell module is low and needs to be heated, thereby rapidly increasing the temperature of the battery cell module. This improves the utilization rate of the internal space of the battery assembly and the thermal management efficiency of the battery assembly.

[0011] As an optional implementation, the housing may include a frame, a top cover, and a bottom cover, with the top cover and bottom cover respectively connected to the upper and lower sides of the frame and together forming a receiving cavity; the cold plate is connected to the frame.

[0012] As an alternative implementation, the profile shape of the cold plate matches the profile shape of the frame; the circumferential edge of the cold plate is welded to the circumferential edge of the bottom side of the frame.

[0013] As an alternative implementation, the frame includes a frame and a partition beam, with the two ends of the partition beam connected to opposite sides of the frame, respectively; the partition beam is configured to divide the receiving cavity into a first chamber and a second chamber arranged along the length of the housing; the cell assembly is located in the first chamber; the battery assembly also includes an electrical assembly disposed in the second chamber.

[0014] As an optional implementation, there can be multiple heating films, which are spaced apart along the width direction of the housing on the bottom side of the first chamber; the battery cell assembly can include multiple battery cell modules, and the multiple heating films are respectively bonded to the bottom side of different battery cell modules.

[0015] As an optional implementation, the frame may also include longitudinal beams and transverse beams. The longitudinal beams are located in the first chamber and extend along the length of the shell. The transverse beams are located in the first chamber and extend along the width of the shell. The longitudinal beams and transverse beams together divide the first chamber into multiple accommodating areas, and each accommodating area is provided with at least one battery cell module.

[0016] As an alternative implementation, the heating film extends along the length of the housing; the heating film covers at least a portion of the two accommodating areas arranged along the length of the housing.

[0017] As an alternative implementation, the cooling assembly may further include a valve island assembly disposed on the outside of the housing, with the cold plate at least partially protruding to the outside of the housing, and the valve island assembly connected to the cold plate protruding to the outside of the housing.

[0018] The cold plate has a refrigerant pipeline with a refrigerant inlet and a refrigerant outlet, which are connected to different positions of the valve island assembly.

[0019] As an optional implementation, the valve island assembly may include a valve island body and a valve seat, with the valve island body connected to the valve seat and the valve seat sealed to the cold plate. The valve island body has a refrigerant inlet pipe and a refrigerant outlet pipe, with the refrigerant inlet pipe connected to the refrigerant inlet and the refrigerant outlet pipe connected to the refrigerant outlet.

[0020] Secondly, this application provides a vehicle that includes the battery assembly described in any of the above-mentioned technical solutions.

[0021] 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 thermal management module includes a cooling component and a heating component. The cooling component includes a cold plate disposed at the bottom of the receiving cavity. The heating component includes a heating film, which is adhered to the side of the cold plate facing the cell assembly. The side of the heating film facing the cell assembly contacts the bottom side of the cell assembly. The heating film has a larger contact area on the bottom side of the cell assembly, which can quickly increase the temperature of the cell assembly, thereby improving the internal space utilization of the battery assembly and improving the thermal management efficiency of the battery assembly.

[0022] 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

[0023] 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.

[0024] Figure 1 is a schematic diagram of the battery assembly provided in an embodiment of this application;

[0025] Figure 2 is a top view of the battery assembly provided in an embodiment of this application;

[0026] Figure 3 is a side view of the battery assembly provided in an embodiment of this application;

[0027] Figure 4 is an internal structural diagram of the battery assembly provided in an embodiment of this application;

[0028] Figure 5 is an exploded view of the battery assembly provided in the embodiment of this application;

[0029] Figure 6 is an internal view of the battery assembly housing provided in an embodiment of this application;

[0030] Figure 7 is a partial view of position A in Figure 1.

[0031] Explanation of reference numerals in the attached drawings: 10-Battery assembly; 100-Housing shell; 101-Receiving cavity; 101a-First chamber; 101b-Second chamber; 102-Accommodation area; 110-Frame; 111-Border; 112-Separating beam; 113-Longitudinal beam; 114-Crossbeam; 120-Top cover; 130-Bottom cover; 200-Cell assembly; 210-Cell module; 300-Thermal management module; 310-Cooling assembly; 311-Cold plate; 312-Valve island assembly; 3121-Valve island body; 3121a-Refrigerant inlet pipe; 3121b-Refrigerant outlet pipe; 3122-Valve seat; 320-Heating assembly; 321-Heating film; 400-Electrical assembly. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 electrical components such as a battery management system. The cell modules and electrical components are all housed inside the battery casing. The battery pack also requires a thermal management module to control its temperature in the operating environment. For example, water-cooling pipes are used to cool the cell modules, and heating films are used to heat them.

[0038] However, the thermal management module in the battery pack has low efficiency in cooling and heating the cell modules. The heat transfer efficiency between the water-cooled pipes and the battery modules is low, resulting in slow cooling speed and the battery pack is prone to overheating. In addition, the heating film has a small contact area with the battery modules and low heating efficiency. When the battery needs to be heated, it cannot quickly reach the ideal operating temperature. Therefore, the overall thermal management effect of the battery pack is poor.

[0039] To address the aforementioned issues, this application provides a battery assembly and a vehicle. Through structural design and placement of the thermal management module within the battery assembly, when the temperature of the battery cell assembly is high and requires cooling, heat is rapidly conducted between the cold plate and the battery cell assembly, quickly absorbing the heat from the battery cell module and achieving cooling. Conversely, when the temperature of the battery cell assembly is low and requires heating, the heating film, located on the bottom side of the battery cell assembly, has a larger contact area, rapidly increasing the temperature of the battery cell assembly. This improves both the internal space utilization of the battery assembly and the thermal management efficiency of the battery assembly.

[0040] The technical solution of this application will be described in detail below through specific embodiments.

[0041] Figure 1 is a schematic diagram of the battery assembly provided in the embodiment of this application; Figure 2 is a top view of the battery assembly provided in the embodiment of this application; Figure 3 is a side view of the battery assembly provided in the embodiment of this application; Figure 4 is an internal structural diagram of the battery assembly provided in the embodiment of this application; Figure 5 is an exploded view of the battery assembly provided in the embodiment of this application; Figure 6 is an internal view of the housing of the battery assembly provided in the embodiment of this application; and Figure 7 is a partial view of position A in Figure 1.

[0042] As shown in Figures 1 to 7, this application embodiment 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 control and manage the operating ambient temperature of the cell assembly 200.

[0043] The thermal management module 300 includes a cooling component 310 and a heating component 320. When the battery assembly 10 is in a high-temperature environment, or when the cell assembly 200 continues to operate at a rising temperature, the cooling component 310 cools the cell assembly 200 by absorbing and removing heat from it, thus lowering its temperature. When the battery assembly 10 is in a low-temperature environment, or when the vehicle is first started, the heating component 320 generates heat and raises the temperature of the cell assembly 200 to quickly reach its operating temperature.

[0044] In some embodiments, the cooling assembly 310 includes a cold plate 311 disposed at the bottom of the receiving cavity 101. The heating assembly 320 includes a heating film 321, which is adhered to the side of the cold plate 311 facing the cell assembly 200, and the side of the heating film 321 facing the cell assembly 200 is in contact with the bottom side of the cell assembly 200.

[0045] Understandably, the heating film 321 is bonded between the cold plate 311 and the battery cell assembly 200, with its upper and lower surfaces bonded to the cold plate 311 and the battery cell assembly 200, respectively. When the battery cell assembly 200 needs cooling, the cold plate 311 can absorb the heat transferred from the battery cell assembly 200 through heat conduction; in this case, the heating film 321 does not operate. When the battery cell assembly 200 needs heating, the heating film 321 generates heat through electrical heating and transfers the heat to the battery cell assembly 200 to raise its operating temperature; in this case, the cold plate 311 does not operate.

[0046] For example, the cold plate 311 can be cooled by refrigerant, that is, refrigerant is introduced into the cold plate 311, and the temperature is reduced by the phase change of the refrigerant, and the heat of the battery cell assembly 200 is absorbed.

[0047] For example, the heating film 321 can be a sheet structure, and a resistance wire is provided in the sheet heating film 321. When current is passed through the resistance wire, heat can be generated and the heat can be conducted to the battery cell assembly 200.

[0048] For example, the heating film 321 and the cold plate 311 can be bonded together with thermally conductive adhesive, which can improve the heat transfer efficiency and reduce heat loss.

[0049] It should be noted that in the battery assembly 10 provided by the embodiments of the present application, 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 battery cell assembly 200 is relatively high and needs to be cooled down, the cold plate 311 absorbs the heat of the battery cell module 210. When the temperature of the battery cell assembly 200 is relatively low and needs to be heated up, the heating film 321 is located on the bottom side of the battery cell assembly 200, with a larger contact area, which can quickly increase the temperature of the battery cell assembly 200. Thus, while improving the internal space utilization rate of the battery assembly 10, the thermal management efficiency of the battery assembly 10 is also improved.

[0050] In a possible implementation manner, the housing 100 may include a frame 110, an upper cover 120 and a bottom guard plate 130. The upper cover 120 and the bottom guard plate 130 are respectively connected to the upper and lower sides of the frame 110, and jointly enclose an accommodation cavity 101. The cold plate 311 is connected to the frame 110.

[0051] It can be understood that the upper cover 12 and the upper surface of 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 110. The bottom guard plate 130 and the lower surface of 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.

[0052] Exemplarily, the frame 110 can be fixed by splicing profiles, and the frame 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.

[0053] 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.

[0054] In some embodiments, the contour shape of the cold plate 311 matches the contour shape of the frame 110. The circumferential edge of the cold plate 311 is welded to the circumferential edge of the bottom side of the frame 110. In this way, the structural strength of the connection between the cold plate 311 and the frame 110 can be improved, and the structural reliability of the battery assembly 10 during use can be improved.

[0055] Among them, the weld between the cold plate 311 and the frame 110 can surround the edges of the frame 110 and the cold plate 311 for one week, that is, the weld between the cold plate 311 and the frame 110 can extend along the circumferential edges of the frame 110 and the cold plate 311.

[0056] Exemplarily, the cold plate 311 and the frame 110 can be welded by friction welding process method. [[ID=In one possible implementation, the frame 110 may include a side frame 111 and a partition beam 112, with both ends of the partition beam 112 connected to opposite sides of the side frame 111. The partition beam 112 is configured to divide the receiving cavity 101 into a first chamber 101a and a second chamber 101b arranged along the length of the housing 100. The battery cell assembly 200 is located within the first chamber 101a; the battery assembly 10 also includes an electrical assembly 400 disposed within the second chamber 101b.

[0058] The length direction of the housing 100 is defined as the X direction, and the width direction of the housing 100 is defined as the Y direction. The partition beam 112 extends along the Y direction, dividing the receiving cavity 101 into a first chamber 101a and a second chamber 101b arranged along the X direction.

[0059] It is understood that the two ends of the partition beam 112 can be connected to the inner edges of the two sides of the frame 110 by fasteners such as bolts, or the two ends of the partition beam 112 can be welded to the inner edges of the two sides of the frame 110 respectively. The specific connection method between the partition beam 112 and the frame 110 is not limited in this embodiment.

[0060] In one possible implementation, there may be multiple heating films 321, which are spaced apart along the width direction of the housing 100 on the bottom side of the first chamber 101a. The battery cell assembly 200 may include multiple battery cell modules 210, and the multiple heating films 321 are respectively bonded to the bottom side of different battery cell modules 210.

[0061] Understandably, multiple battery cell modules 210 are arranged in an array within the first chamber 101a, and multiple heating films 321 can be connected in series. When the battery assembly needs to be heated, multiple heating films 321 can heat up simultaneously. In this way, different battery cell modules 210 can be heated by heating films 321, improving the heating uniformity of the battery cell modules 210.

[0062] It should be noted that the cell assembly 200 may also include end plates, which can be clamped on both sides of the cell module 210. Each cell module 210 may include multiple cell units. The cell module 210 fixed by the end plates can improve the convenience of installation into the first chamber 101a. The number of cell units included in each cell module 210 in this embodiment is not specifically limited.

[0063] In some embodiments, the frame 110 may further include a longitudinal beam 113 and a transverse beam 114. The longitudinal beam 113 is located within the first chamber 101a and extends along the length direction of the housing 100. The transverse beam 114 is located within the first chamber 101a and extends along the width direction of the housing 100. The longitudinal beam 113 and the transverse beam 114 together divide the first chamber 101a into a plurality of receiving areas 102, and each receiving area 102 is provided with at least one battery cell module 210.

[0064] It is understood that the longitudinal beam 113 extends along the X direction, and the transverse beam 114 extends along the Y direction. The heating film 321 can be elongated and can be arranged along the Y direction, with each heating film 321 spanning two receiving areas 102.

[0065] For example, a notch may be provided on the crossbeam 114, and the heating film 321 may include two heating parts and a connecting section. The two heating parts are connected by the connecting section. The width of the heating part is greater than the width of the connecting section, so that the connecting section forms a narrowing structure in the middle region of the length direction of the heating film 321. The connecting section is opposite to the notch on the crossbeam 114, that is, the connecting section passes through the notch of the crossbeam 114.

[0066] It should be noted that the narrowing structure of the connecting section helps to reduce the size of the gap on the crossbeam 114 when the heating film 321 passes through the crossbeam 114, thereby ensuring that the crossbeam 114 has sufficient structural strength. The heating parts at both ends have a larger width, which can ensure that the heating film 321 and the battery cell module 210 have a sufficiently large contact area, thereby ensuring good heating efficiency.

[0067] Furthermore, the resistance wire within the heating film 321 can be arranged to pass through the connecting section from one heating part and extend to another heating part, and the resistance wire can be reciprocated between the two heating parts to expand the heating area of ​​the heating film 321.

[0068] In some embodiments, the heating film 321 may extend along the length of the housing 100. The heating film 321 covers at least a portion of the two receiving areas 102 arranged along the length of the housing 100.

[0069] It is understandable that each cavity can hold one battery cell module 210, and one heating part of the heating film 321 corresponds to one battery cell module 210.

[0070] In one possible implementation, the cooling assembly 310 may further include a valve island assembly 312 disposed on the outside of the housing 100, with the cold plate 311 at least partially protruding to the outside of the housing 100, and the valve island assembly 312 connected to the cold plate 311 protruding to the outside of the housing 100.

[0071] The cold plate 311 has a refrigerant pipeline with a refrigerant inlet and a refrigerant outlet, which are respectively connected to different positions of the valve island assembly 312.

[0072] Understandably, the refrigerant piping on the cold plate 311 can include refrigerant branches, with the inlets of multiple refrigerant branches connected to the refrigerant inlet of the cold plate 311, and the outlets of multiple refrigerant branches connected to the refrigerant outlet of the cold plate 311. These multiple refrigerant branches can be distributed in different areas of the cold plate 311, and each area corresponding to a different battery cell module 210, thus ensuring that all battery cell modules 210 have good cooling and heat dissipation effects.

[0073] In some embodiments, the valve island assembly 312 may include a valve island body 3121 and a valve seat 3122. The valve island body 3121 is connected to the valve seat 3122, and the valve seat 3122 is sealed to the cold plate 311. The valve island body 3121 has a refrigerant inlet pipe 3121a and a refrigerant outlet pipe 3121b. The refrigerant inlet pipe 3121a is connected to the refrigerant inlet, and the refrigerant outlet pipe 3121b is connected to the refrigerant outlet.

[0074] Understandably, the valve seat 3122 can be welded to the cold plate 311, with the weld seam surrounding the periphery of the valve seat 3122 to ensure good sealing. The valve island body 3121 can be fixedly connected to the valve seat 3122 using fasteners such as bolts. A sealing ring can be provided between the refrigerant inlet pipe 3121a on the valve island body 3121 and the valve seat 3122, and a sealing ring can be provided between the refrigerant outlet pipe 3121b on the valve island body 3121 and the valve seat 3122.

[0075] For example, multiple sealing rings can be fitted on the outside of the refrigerant inlet pipe 3121a and the refrigerant outlet pipe 3121b. These multiple sealing rings form a multi-seal structure on the outer surface of the refrigerant inlet pipe 3121a and the refrigerant outlet pipe 3121b to improve the sealing performance between the valve island body 3121 and the valve seat 3122.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] This application provides a battery assembly 10 and a vehicle. 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 thermal management module 300 includes a cooling assembly 310 and a heating assembly 320. The cooling assembly 310 includes a cold plate 311, which is disposed at the bottom of the receiving cavity 101. The heating assembly 320 includes a heating film 321, which is adhered to the side of the cold plate 311 facing the cell assembly 200. The side of the heating film 321 facing the cell assembly 200 contacts the bottom side of the cell assembly 200. The heating film 321 has a larger contact area on the bottom side of the cell assembly 200, which can quickly increase the temperature of the cell assembly 200, thereby improving the internal space utilization of the battery assembly 10 and improving the thermal management efficiency of the battery assembly 10.

[0080] 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, 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 thermal management module (300) includes a cooling component (310) and a heating component (320). The cooling component (310) includes a cold plate (311) disposed at the bottom of the receiving cavity (101). The heating component (320) includes a heating film (321) which is adhered to the side of the cold plate (311) facing the cell assembly (200). The side of the heating film (321) facing the cell assembly (200) is in contact with the bottom side of the cell assembly (200).

2. The battery assembly according to claim 1, characterized in that, The housing (100) includes a frame (110), a top cover (120) and a bottom protective plate (130). The top cover (120) and the bottom protective plate (130) are respectively connected to the upper and lower sides of the frame (110) and together form the receiving cavity (101). The cold plate (311) is connected to the frame (110).

3. The battery assembly according to claim 2, characterized in that, The outline shape of the cold plate (311) matches the outline shape of the frame (110); the circumferential edge of the cold plate (311) is welded to the circumferential edge of the bottom side of the frame (110).

4. The battery assembly according to claim 2, characterized in that, The frame (110) includes a side frame (111) and a partition beam (112), the two ends of which are connected to opposite sides of the side frame (111); the partition beam (112) is configured to divide the receiving cavity (101) into a first chamber (101a) and a second chamber (101b) arranged along the length of the housing (100); the battery cell assembly (200) is located in the first chamber (101a); the battery assembly (10) further includes an electrical assembly (400), which is disposed in the second chamber (101b).

5. The battery assembly according to claim 4, characterized in that, There are multiple heating films (321), and the multiple heating films (321) are arranged at intervals along the width direction of the housing (100) on the bottom side of the first chamber (101a); the battery cell assembly (200) includes multiple battery cell modules (210), and the multiple heating films (321) are respectively bonded to the bottom side of different battery cell modules (210).

6. The battery assembly according to claim 5, characterized in that, The frame (110) further includes a longitudinal beam (113) and a transverse beam (114). The longitudinal beam (113) is located in the first chamber (101a) and extends along the length direction of the housing (100). The transverse beam (114) is located in the first chamber (101a) and extends along the width direction of the housing (100). The longitudinal beam (113) and the transverse beam (114) together divide the first chamber (101a) into a plurality of accommodating areas (102), and each accommodating area (102) is provided with at least one of the battery cell modules (210).

7. The battery assembly according to claim 6, characterized in that, The heating film (321) extends along the length of the housing (100); the heating film (321) covers at least a portion of the two accommodating areas (102) arranged along the length of the housing (100).

8. The battery assembly according to any one of claims 1-7, characterized in that, The cooling assembly (310) further includes a valve island assembly (312), which is disposed on the outside of the housing (100), and the cold plate (311) protrudes at least partially to the outside of the housing (100). The valve island assembly (312) is connected to the cold plate (311) protruding to the outside of the housing (100). The cold plate (311) has a refrigerant pipeline with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are respectively connected to different positions of the valve island assembly (312).

9. The battery assembly according to claim 8, characterized in that, The valve island assembly (312) includes a valve island body (3121) and a valve seat (3122). The valve island body (3121) is connected to the valve seat (3122), and the valve seat (3122) is sealed to the cold plate (311). The valve island body (3121) has a refrigerant inlet pipe (3121a) and a refrigerant outlet pipe (3121b). The refrigerant inlet pipe (3121a) is connected to the refrigerant inlet, and the refrigerant outlet pipe (3121b) is connected to the refrigerant outlet.

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

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