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, and the battery cell assembly is arranged in the containing cavity; the heat management module comprises a cold plate, a protection plate support and a shunt, the cold plate is arranged on the bottom side of the shell, the cold plate is configured to cool the battery cell assembly, a connecting groove is formed in the edge of the bottom side of the shell, and the protection plate support is inserted into the connecting groove and protrudes out of the outer side of the shell; the diverter is connected with the guard plate bracket and is communicated with the cold plate; and the guard plate bracket is welded with the edge of the connecting groove, so that the sealing performance of the shell is ensured, the cooling medium inlet and outlet are externally arranged, and the assembly and the maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery assembly and a vehicle. BACKGROUND

[0002] New energy vehicles have rapidly popularized, and electric new energy vehicles include three core modules of electric drive, battery and electric control. As an important core component, the performance, capacity density and safety of the battery assembly are increasingly required.

[0003] In related technologies, the battery assembly of a new energy vehicle usually includes a battery shell, a battery cell module and a heat management system, the battery cell module is arranged inside the battery shell, and the heat management system is used for adjusting the working temperature of the battery cell module. The heat management system includes a cooling unit, and the cooling unit is used for cooling the battery cell module through cooling water.

[0004] However, the cooling water inlet and outlet of the cooling unit in the current battery assembly are arranged inside the shell, which is difficult to assemble and maintain. UTILITY MODEL CONTENT

[0005] The present application provides a battery assembly and a vehicle to solve the technical problem that the cooling water inlet and outlet of the cooling unit in the current battery assembly are arranged inside the shell, which is difficult to assemble and maintain.

[0006] In a first aspect, the present application provides a battery assembly, which includes a shell, a battery cell assembly and a heat management module, the shell has a receiving cavity, the battery cell assembly is arranged in the receiving cavity; the heat management module includes a cold plate, a guard plate support and a flow divider, the cold plate is arranged at the bottom side of the shell, and the cold plate is configured to cool the battery cell assembly.

[0007] The bottom side edge of the shell is provided with a connecting groove, the guard plate support is inserted into the connecting groove and protrudes to the outside of the shell; the flow divider is connected with the guard plate support and communicates with the cold plate; and the guard plate support is welded with the edge of the connecting groove.

[0008] The battery assembly provided by the present application can realize the external cooling medium inlet and outlet by arranging the flow divider on the guard plate support, while ensuring the sealing of the shell, which is convenient for assembly and maintenance.

[0009] As an optional implementation, the shell can include a frame, the connecting groove is located on the side of the frame facing the cold plate, and the side of the guard plate support facing the cold plate protrudes from the connecting groove.

[0010] In this way, the position of the contact between the guard plate support and the connecting groove can be ensured to have good sealing performance.

[0011] As an optional implementation, the guard bracket can include a plug-in part and a protruding part, the plug-in part is connected with the protruding part, the plug-in part is plugged into the connecting groove, the protruding part is located outside the shell, and the flow divider is connected to the upper end face of the protruding part; the thickness of the protruding part is greater than the thickness of the plug-in part.

[0012] In this way, the installation position of the guard bracket relative to the frame can be limited.

[0013] As an optional implementation, the plug-in part and the protruding part have a welding edge therebetween, and the welding edge is welded with the edge of the connecting groove.

[0014] In this way, the connection reliability and structural strength of the guard bracket and the frame can be improved.

[0015] As an optional implementation, the welding edge can include a first side edge, a second side edge and a third side edge connected in sequence; the first side edge, the second side edge and the third side edge extend along the side edge of the connecting groove towards the outside of the shell, the first side edge and the third side edge are welded with the opposite two side edges of the connecting groove respectively, and the second side edge is welded with the groove bottom edge of the connecting groove.

[0016] In this way, the sealing performance of the butt joint position of the guard bracket and the connecting groove can be ensured.

[0017] As an optional implementation, the cold plate can include a cold plate body and a flow dividing part; the flow dividing part is connected with the cold plate body, and the flow dividing part protrudes to the outside of the shell; the flow dividing part is connected with the guard bracket, and the flow dividing part is in communication with the flow divider.

[0018] In this way, the smoothness of the cooling medium entering and exiting the cold plate through the flow divider can be ensured.

[0019] As an optional implementation, the side of the guard bracket away from the flow divider has a receiving groove, and the flow dividing part is located in the receiving groove; the receiving groove has a welding surface arranged along the edge thereof, and the edge of the flow dividing part is welded with the welding surface.

[0020] In this way, the corresponding area between the cold plate and the guard bracket can have good sealing performance.

[0021] As an optional implementation, the cold plate body is welded with the circumferential edge of the shell.

[0022] In this way, the connection strength of the cold plate and the shell can be improved, and the shell can have good sealing performance.

[0023] As an optional implementation, the shell can include a bottom guard plate, the bottom guard plate has a protection part protruding to the side of the shell, the protection part is arranged on the side of the flow dividing part away from the guard bracket, and the protection part is connected with the guard bracket.

[0024] In this way, the bottom side of the cold plate can be protected, and damage to the cold plate caused by impact can be avoided.

[0025] In a second aspect, the application provides a vehicle, which comprises the battery assembly of any of the above technical solutions.

[0026] The application provides a battery assembly and a vehicle. The battery assembly comprises a shell, a cell assembly, and a thermal management module. The shell has a receiving cavity, and the cell assembly is arranged in the receiving cavity. The thermal management module comprises a cold plate, a guard plate support, and a flow divider. The cold plate is arranged on the bottom side of the shell and is configured to cool the cell assembly. The bottom side of the shell is provided with a connecting groove, and the guard plate support is inserted into the connecting groove and protrudes to the outside of the shell. The flow divider is connected to the guard plate support and communicates with the cold plate. The guard plate support is welded to the edge of the connecting groove, so that the sealing of the shell is ensured, the cooling medium inlet and outlet are arranged outside, and assembly and maintenance are facilitated.

[0027] In addition to the technical problems solved by the embodiments of the application described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features, the other technical problems solved by the battery assembly and the vehicle provided by the application, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0029] Figure 1 The structural schematic diagram of the battery assembly provided by the embodiments of the application is shown in the figure.

[0030] Figure 2 The internal view of the battery assembly provided by the embodiments of the application is shown in the figure.

[0031] Figure 3 The exploded view of the battery assembly provided by the embodiments of the application is shown in the figure.

[0032] Figure 4 The structural schematic diagram of the shell of the battery assembly provided by the embodiments of the application is shown in the figure.

[0033] Figure 5 The exploded view of the thermal management module on the shell of the battery assembly provided by the embodiments of the application is shown in the figure.

[0034] Figure 6 The exploded view of the thermal management module on the shell of the battery assembly provided by the embodiments of the application is shown in the figure.Figure 5 Partial view of the middle A position;

[0035] Figure 7 Structure of the fender support in the battery assembly provided by the embodiment of the present application Figure 1 ;

[0036] Figure 8 Structure of the fender support in the battery assembly provided by the embodiment of the present application Figure 2 .

[0037] Explanation of reference signs:

[0038] 10 - battery assembly;

[0039] 100 - housing; 101 - accommodating cavity; 102 - connecting groove; 110 - frame; 120 - upper cover; 130 - bottom fender; 131 - protection part;

[0040] 200 - battery cell assembly; 210 - battery cell module;

[0041] 300 - thermal management module; 310 - cold plate; 311 - fender support; 3111 - plug-in part; 3112 - protruding part; 3113 - welding edge; 3113a - first side edge; 3113b - second side edge; 3113c - third side edge; 3114 - accommodating groove; 3115 - welding surface; 312 - shunt; 313 - cold plate main body; 314 - shunt part; 315 - second sealing member; 320 - heating film. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0044] Secondly, it needs to be explained that in the description of the present application, the terms indicating the direction or position relationship based on the direction or position relationship shown in the drawings are only for the convenience of description, and do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In addition, it also needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The battery assembly of the new energy vehicle is an important core component, and the performance, capacity density, safety and other requirements thereof are becoming higher and higher. The battery assembly of the new energy vehicle usually includes a battery shell, a battery cell module and a thermal management system, etc. The battery cell module and the electrical components are arranged inside the battery shell, and the thermal management system is used to adjust the working temperature of the battery cell module. The thermal management system includes a cooling unit, which is used to cool the battery cell module by cooling water.

[0048] However, the cooling water inlet and outlet of the cooling unit in the battery assembly is arranged inside the shell, and during assembly, the connection process of the pipeline and the cooling component needs to be completed inside the shell. When maintenance is needed, the shell needs to be opened for operation, resulting in difficulty in assembly and maintenance.

[0049] In view of the above problems, the present application provides a battery assembly and a vehicle. By arranging a support and protection structure on the edge of the shell, the structure is welded and sealed with the shell and fixed, the inlet and outlet of the cooling medium of the cold plate can be realized through the flow divider arranged outside the shell, and the cooling component is fixed through the support and protection structure. Therefore, while ensuring the sealing of the shell, the inlet and outlet of the cooling medium are realized outside, which is convenient for assembly and maintenance.

[0050] The technical solution of this application will be described in detail below through specific embodiments.

[0051] 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 An exploded view of the thermal management module on the housing of the battery assembly provided in this application embodiment; Figure 6 for Figure 5 A partial view of position A in the middle; Figure 7 This is a schematic diagram of the structure of the protective plate bracket in the battery assembly provided in the embodiments of this application. Figure 1 ; Figure 8 This is a schematic diagram of the structure of the protective plate bracket in the battery assembly provided in the embodiments of this application. Figure 2 .

[0052] like Figures 1 to 8 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.

[0053] The thermal management module 300 includes a cold plate 310, a protective plate bracket 311, and a shunt 312. The cold plate 310 is disposed on the bottom side of the housing 100 and is configured to cool the battery cell assembly 200. The protective plate bracket 311 and the shunt 312 are both disposed on the outside of the housing 100. The protective plate bracket 311 supports the shunt 312 and can also dock with the cold plate 310, allowing the cold plate 310 to communicate with the shunt 312.

[0054] In some embodiments, the bottom edge of the housing 100 is provided with a connecting groove 102, and the protective plate bracket 311 is inserted into the connecting groove 102 and protrudes to the outside of the housing 100. The distributor 312 is connected to the protective plate bracket 311 and communicates with the cold plate 310, and the protective plate bracket 311 is welded to the edge of the connecting groove 102.

[0055] It is understandable that the protective plate bracket 311 is positioned by the connecting groove 102. After the protective plate bracket 311 is welded and fixed to the edge of the connecting groove 102, it can form a fixed whole with the housing 100, thereby providing support and positioning for the assembly of the distributor 312 and the cold plate 310.

[0056] Exemplarily, the cooling medium flowing in the cold plate 310 can be refrigerant, the cold plate 310 has a refrigerant flow channel, the refrigerant can flow into the refrigerant flow channel of the cold plate 310 through the flow distributor 312, and the refrigerant can flow out of the flow distributor 312 after circulation. The cold plate 310 realizes cooling through phase change of the refrigerant. Exemplarily, during or after phase change of the refrigerant, the refrigerant in a low-temperature state can take away heat of the battery cell assembly 200.

[0057] It should be noted that in the battery assembly 10 provided by the embodiments of the present application, the edge of the shell 100 is provided with the guard bracket 311, the guard bracket 311 is welded and fixed with the shell 100, and the inlet and outlet of the cooling medium of the cold plate 310 can be realized through the flow distributor 312 arranged on the guard bracket 311, so that the sealing property of the shell 100 is ensured, and the inlet and outlet of the cooling medium are externally arranged, which is convenient for assembly and maintenance.

[0058] In a possible implementation manner, the shell 100 can include a frame 110, the connecting groove 102 is located on a side of the frame 110 facing the cold plate 310, and a side of the guard bracket 311 facing the cold plate 310 protrudes from the connecting groove 102, so that the position of contact between the guard bracket 311 and the connecting groove 102 has good sealing property.

[0059] In some embodiments, the shell 100 can further include an upper cover 120 and a bottom guard plate 130, the upper cover 120 and the bottom guard plate 130 are connected to upper and lower sides of the frame 110 respectively, and together enclose the accommodating cavity 101. The position corresponding to the guard bracket 311 of the bottom guard plate 130 can abut against the bottom guard plate 130, and the guard bracket 311 protruding relative to the connecting groove 102 can ensure close abutment with the bottom guard plate 130.

[0060] It can be understood that the upper cover 120 and the upper surface of the frame 110 are connected through bolts or other fasteners, and the contour shape of the upper cover 120 can match the contour shape of the frame. The bottom guard plate 130 and the lower surface of the frame 110 are connected through bolts or other fasteners, and the contour shape of the bottom guard plate 130 can match the contour shape of the frame 110.

[0061] Exemplarily, the frame 110 can be fixed by profile splicing, and the frame 110 can be a square structure or an approximately square structure. The profile section of the frame 110 can be a "mouth" shape, a "day" shape, etc., which is not limited in the embodiments of the present application.

[0062] It should be noted that the materials of the frame 110, the upper cover 120 and the bottom guard plate 130 can be metal or alloy materials such as iron and aluminum, which are not limited in the embodiments of the present application.

[0063] In some embodiments, the guard bracket 311 can include a plug-in part 3111 and a protruding part 3112, the plug-in part 3111 is connected with the protruding part 3112, the plug-in part 3111 is plugged into the connecting groove 102, and the protruding part 3112 is located outside the shell 100, and the shunt 312 is connected to the upper end surface of the protruding part 3112. Wherein, the thickness of the protruding part 3112 can be greater than the thickness of the plug-in part 3111.

[0064] It can be understood that a step structure can be formed at the position where the plug-in part 3111 is connected with the protruding part 3112, and when the guard bracket 311 is plugged into the connecting groove 102, the step structure can abut against the outer side wall of the frame 110, thereby facilitating limiting the installation position of the guard bracket 311 relative to the frame 110.

[0065] In some embodiments, the plug-in part 3111 and the protruding part 3112 have a welding edge 3113 therebetween, and the welding edge 3113 is welded with the edge of the connecting groove 102, thereby improving the connection reliability and structural strength of the guard bracket 311 and the frame 110.

[0066] For example, the welding edge 3113 can include a first side edge 3113a, a second side edge 3113b and a third side edge 3113c connected in sequence, the first side edge 3113a, the second side edge 3113b and the third side edge 3113c extend along the side edge of the connecting groove 102 towards the outside of the shell 100, and are welded with the connecting groove 102 respectively, thereby ensuring the sealing performance of the butt joint position of the guard bracket 311 and the connecting groove 102. Wherein, the first side edge and the third side edge are welded with the opposite two side edges of the connecting groove respectively, and the second side edge is welded with the groove bottom edge of the connecting groove.

[0067] In some embodiments, the cold plate 310 can include a cold plate body 313 and a shunt part 314, the shunt part 314 is connected with the cold plate body 313, and the shunt part 314 protrudes to the outside of the shell 100. The shunt part 314 is connected with the guard bracket 311, and the shunt part 314 communicates with the shunt 312, thereby ensuring the smoothness of the cooling medium entering and exiting the cold plate 310 through the shunt 312.

[0068] It can be understood that the cold plate body 313 is located below the shell 100, and at least part of the cold plate body 313 is opposite to the battery cell assembly 200. The shunt part 314 is opposite to the lower part of the guard bracket 311, and the cooling medium can enter the shunt part 314 through the shunt 312, and then be shunted to the plurality of refrigerant channels on the cold plate body 313 from the shunt part 314, thereby cooling each battery cell module 210 of the battery cell assembly 200, and the refrigerant backflow is collected through the shunt part 314 and flows out through the shunt 312, thereby completing the circulation of the refrigerant in the cold plate 310.

[0069] In some embodiments, the side of the shield support 311 away from the shunt 312 has a receiving groove 3114, and the shunt portion 314 is located in the receiving groove 3114. The receiving groove 3114 has a welding surface 3115 arranged along the edge thereof, and the edge of the shunt portion 314 is welded with the welding surface 3115, so that the corresponding area between the cold plate 310 and the shield support 311 can have good sealing performance.

[0070] For example, the cold plate body 313 is welded with the circumferential edge of the shell 100. In this way, the connection strength between the cold plate 310 and the shell 100 can be improved, and the shell 100 can have good sealing performance.

[0071] In some embodiments, the shell 100 can include a bottom shield 130 having a protection portion 131 protruding to the side of the shell 100, the protection portion 131 being arranged on the side of the shunt portion 314 away from the shield support 311 and connected with the shield support 311, so that the bottom side of the cold plate 310 can be protected from damage caused by impact.

[0072] For example, the shunt portion 314 can include a shunt plate and a shunt boss, the shunt boss being welded with the shunt plate, and the refrigerant flow pipe being arranged on the shunt boss. In this way, the shunt portion 314 can have good sealing performance in the area where the refrigerant flows in and out, and refrigerant leakage can be avoided.

[0073] In some embodiments, the shunt boss is connected with a refrigerant inflow pipe and a refrigerant outflow pipe, and the valve island has a refrigerant inlet and a refrigerant outlet, the refrigerant inflow pipe being in communication with the refrigerant inlet, and the refrigerant outflow pipe being in communication with the refrigerant outlet. The refrigerant inlet and the refrigerant outlet are both located on the side of the valve island away from the shell 100.

[0074] It can be understood that the refrigerant inlet and the refrigerant outlet are both arranged on the valve island and face the same side, which improves the convenience of connecting the valve island with external pipelines.

[0075] For example, the valve island has two flow cavities for refrigerant inflow and outflow, respectively, and the two flow cavities are in communication with the refrigerant inlet and the refrigerant outlet, respectively, and the refrigerant inflow pipe and the refrigerant outflow pipe are respectively inserted into the two flow cavities.

[0076] For example, the thermal management module 300 can further include a first sealing member, the outer wall of the refrigerant inflow pipe and the refrigerant outflow pipe is provided with a first sealing groove, and the first sealing member is located in the first sealing groove and abuts against the inner wall of the flow cavity, so that the refrigerant inflow pipe and the refrigerant outflow pipe can have good sealing performance with the valve island, and refrigerant leakage can be avoided.

[0077] In some embodiments, the valve island is provided with a second sealing groove on the side facing the valve seat, and the second sealing groove is arranged around the outer edge of the flow passage at the end facing the valve seat. The thermal management module 300 can further include a second sealing member 315 located in the second sealing groove, and the second sealing member 315 is in abutment with the upper end surface of the valve seat, so as to seal the gap between the valve seat and the valve island, thereby preventing external gas or dust impurities from entering the inside of the shell 100 through the valve seat.

[0078] In the embodiments of the present application, the thermal management module 300 can further include a heating film 320, which is bonded to the side of the cold plate 310 facing the battery cell assembly 200. The side of the heating film 320 facing the battery cell assembly 200 is in contact with the bottom side of the battery cell assembly 200.

[0079] It can be understood that the heating film 320 is bonded between the cold plate 310 and the battery cell assembly 200, and the upper and lower surfaces of the heating film 320 are bonded to the cold plate 310 and the battery cell assembly 200, respectively. When the battery cell assembly 200 needs to be cooled, the cold plate 310 can absorb the heat transferred from the battery cell assembly 200 by heat conduction. At this time, the heating film 320 does not work. When the battery cell assembly 200 needs to be heated, the heating film 320 generates heat by electric heating and transfers the heat to the battery cell assembly 200 to increase the working temperature of the battery cell assembly 200. At this time, the cold plate 310 does not work.

[0080] For example, the heating film 320 and the cold plate 310 can be bonded by using a heat-conducting adhesive, so as to improve the heat transfer efficiency and reduce heat loss.

[0081] It should be noted that in the battery assembly 10 provided in the embodiments of the present application, the heating film 320 is on the bottom side of the battery cell assembly 200, has a larger contact area, and quickly increases the temperature of the battery cell assembly 200, thereby improving the space utilization rate of the battery assembly 10 and improving the thermal management efficiency of the battery assembly 10.

[0082] The embodiments of the present application also provide a vehicle, which can include the battery assembly 10 in the above technical solutions. The vehicle provided in the embodiments of the present application can be a new energy vehicle, including but not limited to a pure electric vehicle, a hybrid electric vehicle (plug-in, non-plug-in, etc.), a hydrogen energy vehicle, etc., which is not limited in the embodiments of the present application.

[0083] It can be understood that the vehicle provided in the embodiments of the present application further 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 to travel.

[0084] The vehicle provided in the embodiments of the present application has all the technical solutions and all the technical effects of the foregoing battery assembly 10, which will not be described herein.

[0085] The embodiment of the present application provides a battery assembly and a vehicle, the battery assembly comprises a shell, a battery cell assembly and a thermal management module, the shell has a containing cavity, the battery cell assembly is arranged in the containing cavity; the thermal management module comprises a cold plate, a guard plate support and a flow divider, the cold plate is arranged at the bottom side of the shell, the cold plate is configured to cool the battery cell assembly, the bottom side edge of the shell is provided with a connecting groove, the guard plate support is inserted into the connecting groove and protrudes to the outside of the shell; the flow divider is connected with the guard plate support and communicates with the cold plate; the guard plate support is welded with the edge of the connecting groove, so that the sealing property of the shell is ensured, the cooling medium inlet and outlet are externally arranged, and assembly and maintenance are facilitated.

[0086] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery assembly (10) characterized by, The battery assembly (10) comprises a shell (100), an electric core assembly (200) and a thermal management module (300), the shell (100) has a containing cavity (101), the electric core assembly (200) is arranged in the containing cavity (101); the thermal management module (300) comprises a cold plate (310), a guard plate support (311) and a flow divider (312), the cold plate (310) is arranged on the bottom side of the shell (100), and the cold plate (310) is configured to cool the electric core assembly (200). The bottom side edge of the shell (100) is provided with a connecting groove (102), the guard plate support (311) is inserted into the connecting groove (102) and protrudes to the outside of the shell (100); the flow divider (312) is connected with the guard plate support (311) and communicates with the cold plate (310); the guard plate support (311) is welded with the edge of the connecting groove (102).

2. The battery assembly (10) of claim 1, wherein, The shell (100) comprises a frame (110), the connecting groove (102) is located on the side of the frame (110) facing the cold plate (310), and the side of the guard plate support (311) facing the cold plate (310) protrudes from the connecting groove (102).

3. The battery assembly (10) of claim 1, wherein, The guard plate support (311) comprises an insertion part (3111) and a protruding part (3112), the insertion part (3111) is connected with the protruding part (3112), the insertion part (3111) is inserted into the connecting groove (102), the protruding part (3112) is located outside the shell (100), and the flow divider (312) is connected to the upper end face of the protruding part (3112); the thickness of the protruding part (3112) is greater than the thickness of the insertion part (3111).

4. The battery assembly (10) of claim 3, wherein, The insertion part (3111) and the protruding part (3112) have a welding edge (3113) therebetween, and the welding edge (3113) is welded with the edge of the connecting groove (102).

5. The battery assembly (10) of claim 4, wherein, The welding edge (3113) comprises a first side edge (3113a), a second side edge (3113b) and a third side edge (3113c) connected in sequence; the first side edge (3113a), the second side edge (3113b) and the third side edge (3113c) extend along the side edge of the connecting groove (102) facing the outside of the shell (100), the first side edge (3113a) and the third side edge (3113c) are welded with the opposite two side edges of the connecting groove (102) respectively, and the second side edge (3113b) is welded with the groove bottom edge of the connecting groove (102).

6. The battery assembly (10) according to any one of claims 1-5, characterized in that, The cold plate (310) comprises a cold plate main body (313) and a flow dividing part (314); the flow dividing part (314) is connected with the cold plate main body (313), and the flow dividing part (314) protrudes to the outside of the shell (100); the flow dividing part (314) is connected with the guard plate support (311), and the flow dividing part (314) communicates with the flow divider (312).

7. The battery assembly (10) of claim 6, characterized in that The side of the shield support (311) away from the shunt (312) has a containing groove (3114), and the shunt part (314) is located in the containing groove (3114); the containing groove (3114) has a welding surface (3115) arranged along the edge thereof, and the edge of the shunt part (314) is welded with the welding surface (3115).

8. The battery assembly (10) of claim 6, wherein, The cold plate body (313) is welded with the circumferential edge of the shell (100).

9. The battery assembly (10) of claim 6, wherein, The shell (100) comprises a bottom shield (130) having a protection part (131) protruding to the side of the shell (100), the protection part (131) is arranged on the side of the shunt part (314) away from the shield support (311) and connected with the shield support (311).

10. A vehicle characterized by comprising: The battery assembly (10) according to any one of claims 1-9.

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