Battery assembly and vehicle

Abstract

The invention 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 valve seat and a valve guide, the cold plate is arranged on the bottom side of the shell, the cold plate is configured to cool the battery cell assembly through phase change of a refrigerant, the valve seat is connected to the outer side of the shell, the valve guide is connected with the valve seat, the cold plate is provided with a shunting part protruding to the outer side of the shell, and the shunting part is connected with the valve seat; the shunting part is provided with a refrigerant circulating pipe, the refrigerant circulating pipe penetrates through the valve seat and is communicated with the valve guide, the cold plate can realize inflow and outflow of a refrigerant through the valve guide, the cooling efficiency of the cold plate on the battery cell module can be improved while the pipeline connection and assembly convenience of the cold plate is improved, and a better thermal management effect is achieved.

Description

Technical Field

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

[0002] New energy vehicles have been rapidly popularized. Electric new energy vehicles include three core modules: electric drive, battery, and electronic control. As an important core component, the battery assembly is currently subject to increasingly higher requirements for its performance, capacity density, and safety.

[0003] In the related art, the battery assembly of new energy vehicles usually includes components such as a battery housing, a battery cell module, and a thermal management system. The battery cell module is arranged inside the battery housing, and the thermal management system is used to adjust the operating temperature of the battery cell module. The thermal management system includes a cooling unit, which is arranged inside the housing and is used to cool the battery cell module through cooling water.

[0004] However, the thermal management module in the current battery assembly has low cooling efficiency for the battery cell module and poor thermal management effect. Summary of the invention

[0005] The present application provides a battery assembly and a vehicle to solve the technical problem that the thermal management module in the current battery assembly has low cooling efficiency for the battery cell module and poor thermal management effect.

[0006] In a first aspect, the present application provides a battery assembly, which includes a shell, a battery cell assembly and a thermal management module, the shell having a accommodating cavity, and the battery cell assembly is arranged in the accommodating cavity; the thermal management module includes a cold plate, a valve seat and a valve guide, the cold plate is arranged on the bottom side of the shell, and the cold plate is configured to cool the battery cell assembly through phase change of a refrigerant.

[0007] The valve seat is connected to the outside of the shell, the valve guide is connected to the valve seat, the cold plate has a diversion part protruding to the outside of the shell, the diversion part is connected to the valve seat; the diversion part has a refrigerant flow pipe, and the refrigerant flow pipe passes through the valve seat and is connected to the valve guide.

[0008] The battery assembly provided in the present application cooperates with the cold plate by arranging a valve seat and a valve guide on the outside of the shell. The cold plate can realize the inflow and outflow of refrigerant through the valve guide, which improves the connection and assembly convenience of the pipeline connected to the cold plate, and can improve the cooling efficiency of the cold plate on the battery cell module, thereby having a better thermal management effect.

[0009] As an optional implementation, the diverter portion may include a diverter plate and a diverter boss, the diverter boss is welded to the diverter plate, and the refrigerant flow pipe is arranged on the diverter boss.

[0010] Such an arrangement can ensure that the splitter has good sealing properties in the areas where the refrigerant flows in and out, thereby avoiding refrigerant leakage.

[0011] As an optional implementation, the valve seat has a receiving groove on one side facing away from the valve guide, and the diverter boss is arranged in the receiving groove; the edge of the receiving groove has a welding surface, and the edge of the diverter plate is welded to the welding surface.

[0012] Such an arrangement can ensure good sealing performance when the flow dividing portion is connected to the bottom of the valve seat.

[0013] As an optional embodiment, the valve seat has a through hole that passes through the upper and lower sides of the valve seat, and the refrigerant flow pipe is arranged in the through hole; one end of the refrigerant flow pipe facing the valve guide at least partially protrudes from the upper end surface of the valve seat.

[0014] With such an arrangement, the valve seat can effectively fix the flow dividing portion of the cold plate, and can also avoid interference between the refrigerant flow pipe and the valve seat.

[0015] As an optional embodiment, the valve guide has a flow cavity, and the refrigerant flow pipe is inserted into the flow cavity; the thermal management module may also include a first seal, the outer wall of the refrigerant flow pipe is provided with a first sealing groove, the first seal is located in the first sealing groove, and the first seal is abutted against the inner wall of the flow cavity.

[0016] Such an arrangement can ensure good sealing performance between the refrigerant flow pipe and the valve guide to avoid refrigerant leakage.

[0017] As an optional implementation, both the first sealing groove and the first sealing member can be multiple, and the multiple first sealing grooves are arranged at intervals along the length direction of the refrigerant circulation pipe; the multiple first sealing members and the multiple first sealing grooves are arranged in a one-to-one correspondence.

[0018] Such an arrangement can form a multi-pass sealing structure between the refrigerant flow pipe and the valve guide, thereby improving the sealing performance.

[0019] As an optional embodiment, a second sealing groove is provided on the side of the valve guide facing the valve seat, and the second sealing groove is arranged around the outer edge of the flow cavity toward one end of the valve seat; the thermal management module may also include a second sealing member, the second sealing member is located in the second sealing groove, and the second sealing member abuts against the upper end surface of the valve seat.

[0020] With such an arrangement, the gap between the valve seat and the valve guide can be sealed to prevent external gas or dust impurities from entering the interior of the housing through the valve seat.

[0021] As an optional embodiment, the valve guide may include a valve guide body and a connecting part, wherein the connecting part is connected to both sides of the valve guide body; the connecting part has a mounting hole, the valve seat has a threaded hole opposite to the mounting hole, and the valve guide is provided with a threaded fastener, which passes through the mounting hole and is connected to the threaded hole.

[0022] Such an arrangement can improve the connection reliability and structural strength between the valve guide and the valve seat.

[0023] As an optional embodiment, the refrigerant circulation pipe may include a refrigerant inlet pipe and a refrigerant outlet pipe, the valve guide has a refrigerant inlet and a refrigerant outlet, the refrigerant inlet pipe is connected to the refrigerant inlet, and the refrigerant outlet pipe is connected to the refrigerant outlet; the refrigerant inlet and the refrigerant outlet are both located on the side of the valve guide away from the shell.

[0024] In this arrangement, the refrigerant inlet and the refrigerant outlet are both arranged on the valve guide and face the same side, thereby improving the convenience of connecting the valve guide with the external pipeline.

[0025] In a second aspect, the present application provides a vehicle, comprising a battery assembly according to any one of the above technical solutions.

[0026] The present application provides a battery assembly and a vehicle, the battery assembly comprising a shell, a battery cell assembly and a thermal management module, the shell having a accommodating cavity, the battery cell assembly being arranged in the accommodating cavity; the thermal management module comprising a cold plate, a valve seat and a valve guide, the cold plate being arranged on the bottom side of the shell, the cold plate being configured to cool the battery cell assembly by phase change of a refrigerant, the valve seat being connected to the outside of the shell, the valve guide being connected to the valve seat, the cold plate having a shunt portion protruding to the outside of the shell, the shunt portion being connected to the valve seat; the shunt portion having a refrigerant flow pipe, the refrigerant flow pipe passing through the valve seat and being connected to the valve guide, the cold plate being able to realize the inflow and outflow of the refrigerant through the valve guide, which improves the convenience of connecting and assembling the cold plate pipeline, and can improve the cooling efficiency of the cold plate on the battery cell module, and has a better thermal management effect.

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

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application;

[0030] Figure 2 An internal view of a battery assembly provided for an embodiment of the present application;

[0031] Figure 3 An exploded view of a battery assembly provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of a housing of a battery assembly provided in an embodiment of the present application;

[0033] Figure 5 Explosion of the thermal management module on the housing of the battery assembly provided in the embodiment of the present application Figure 1 ;

[0034] Figure 6 for Figure 5 Partial view of the A position in the middle;

[0035] Figure 7 Explosion of the thermal management module on the housing of the battery assembly provided in the embodiment of the present application Figure 2 ;

[0036] Figure 8 for Figure 7 Partial view of position B

[0037] Fig. 9 A schematic diagram of the structure of a valve seat in a battery assembly provided in an embodiment of the present application;

[0038] Fig.10 A top view of a battery assembly provided in an embodiment of the present application in which a housing is connected to a valve seat and a valve guide;

[0039] Fig.11 A cross-sectional view of a battery assembly provided in an embodiment of the present application in which a housing is connected to a valve seat and a valve guide position.

[0040] Description of reference numerals:

[0041] 10-Battery assembly;

[0042] 100-housing; 101-accommodating chamber; 110-frame; 120-upper cover; 130-bottom guard plate;

[0043] 200-battery cell assembly; 210-battery cell module;

[0044] 300-thermal management module; 310-cold plate; 311-valve seat; 3111-plug-in part; 3112-protrusion; 3113-welding edge; 3114-accommodation groove; 3115-welding surface; 3116-through hole; 312-valve guide; 3121-circulation cavity; 3122-second sealing groove; 3123-second sealing member; 3124-valve guide body; 3125-connecting part; 3126-threaded fastener; 3127-refrigerant inlet; 3128-refrigerant outlet; 313-cold plate body; 314-diverter part; 3141-diverter plate; 3142-diverter boss; 315-refrigerant circulation pipe; 3151-first sealing groove; 3152-first sealing member; 315a-refrigerant inlet pipe; 315b-refrigerant outlet pipe; 320-heating film. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0047] Secondly, it should be noted that in the description of the present application, terms such as "front", "rear", "left", "right", "up", "down", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0048] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] As an important core component, the battery assembly of new energy vehicles is currently subject to increasingly higher requirements for its performance, capacity density, and safety. The battery assembly of new energy vehicles usually includes electrical components such as a battery housing, a battery cell module, and a battery management system. The battery cell module is arranged inside the battery housing, and the thermal management system is used to adjust the operating temperature of the battery cell module. The thermal management system includes a cooling unit, which is arranged inside the housing and is used to cool and dissipate heat from the battery cell module through cooling water.

[0051] However, the cooling water of the cooling unit in the current battery assembly has low cooling efficiency for the battery cell module and poor thermal management effect. In addition, the inlet and outlet are set inside the shell. During the assembly process, the connection process between the pipeline and the cooling component needs to be completed inside the shell. When maintenance is required, the shell needs to be opened for operation, which makes assembly and maintenance difficult.

[0052] In response to the above problems, an embodiment of the present application provides a battery assembly and a vehicle. By arranging a valve seat and a valve guide on the outside of the shell to cooperate with the cold plate, the cold plate can realize the inflow and outflow of refrigerant through the valve guide, and the battery cell module is dissipated and cooled by the phase change of the refrigerant. While improving the connection and assembly convenience of the pipeline connected to the cold plate, the cooling efficiency of the cold plate on the battery cell module can be improved, and a better thermal management effect can be achieved.

[0053] The technical solution of the present application will be described in detail below through specific embodiments.

[0054] Figure 1 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application; Figure 2 An internal view of a battery assembly provided for an embodiment of the present application; Figure 3 An exploded view of a battery assembly provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a housing of a battery assembly provided in an embodiment of the present application; Figure 5 Explosion of the thermal management module on the housing of the battery assembly provided in the embodiment of the present application Figure 1 ; Figure 6 for Figure 5 Partial view of the A position in the middle; Figure 7Explosion of the thermal management module on the housing of the battery assembly provided in the embodiment of the present application Figure 2 ; Figure 8 for Figure 7 Partial view of position B in the middle; Fig. 9 A schematic diagram of the structure of a valve seat in a battery assembly provided in an embodiment of the present application; Fig.10 A top view of a battery assembly provided in an embodiment of the present application in which a housing is connected to a valve seat and a valve guide; Fig.11 A cross-sectional view of a battery assembly provided in an embodiment of the present application in which a housing is connected to a valve seat and a valve guide position.

[0055] like Figures 1 to 11 As shown, the embodiment of the present application provides a battery assembly 10, which includes a housing 100, a battery cell assembly 200 and a thermal management module 300. The housing 100 has a receiving cavity 101, and the battery cell assembly 200 is arranged in the receiving cavity 101. The battery cell assembly 200 is used to store electric energy. The thermal management module 300 is used to adjust and manage the working environment temperature of the battery cell assembly 200.

[0056] The thermal management module 300 includes a cold plate 310 , a valve seat 311 and a valve guide 312 . The cold plate 310 is disposed on the bottom side of the housing 100 . The cold plate 310 is configured to cool the battery cell assembly 200 through phase change of a refrigerant.

[0057] It can be understood that the valve seat 311 is connected to the outside of the shell 100, the valve guide 312 is connected to the valve seat 311, the cold plate 310 has a diverter portion 314 protruding to the outside of the shell 100, the diverter portion 314 is connected to the valve seat 311, the diverter portion 314 has a refrigerant flow pipe 315, and the refrigerant flow pipe 315 passes through the valve seat 311 and is connected to the valve guide 312.

[0058] The valve seat 311 serves to install and fix the valve guide 312, and the valve seat 311 can protect and support the portion of the cold plate 310 extending outside the housing 100. When the battery assembly 10 is applied to a vehicle, the valve guide can be connected to the refrigerant circulation system on the vehicle. The refrigerant circulation system may include a refrigerant pipe, an expansion valve, a condenser, and a compressor. During the refrigerant circulation process, the refrigerant will enter the cold plate 310 through the valve guide 312, cool the battery cell assembly 200, and then flow out of the cold plate 310.

[0059] For example, the refrigerant compressed by the compressor is in a high-temperature and high-pressure gas state. After entering the condenser for cooling, the refrigerant enters the expansion valve for throttling, thereby forming a low-temperature and low-pressure liquid refrigerant or a gas-liquid mixture. At this time, the low-temperature and low-pressure liquid refrigerant evaporates after entering the cold plate 310 and absorbs the heat of the battery module 210, and then flows back to the compressor after becoming a gaseous refrigerant, and the cycle continues. The cold plate 310 plays the role of an evaporator to a certain extent.

[0060] It should be noted that in the battery assembly 10 provided in the embodiment of the present application, by arranging a valve seat 311 and a valve guide 312 on the outside of the shell 100 to cooperate with the cold plate 310, the cold plate 310 can realize the inflow and outflow of refrigerant through the valve guide 312, which improves the connection and assembly convenience of the pipeline connected to the cold plate 310, and can improve the cooling efficiency of the cold plate 310 on the battery cell module 210, and has a better thermal management effect.

[0061] In a possible implementation, the flow splitter 314 may include a flow splitter plate 3141 and a flow splitter boss 3142, the flow splitter boss 3142 is welded to the flow splitter plate 3141, and the refrigerant flow pipe 315 is disposed on the flow splitter boss 3142. In this way, it can be ensured that the flow splitter 314 has good sealing performance in the areas where the refrigerant flows in and out, thereby preventing refrigerant leakage.

[0062] In some embodiments, the valve seat 311 has a receiving groove 3114 on one side away from the valve guide 312, and the diverter boss 3142 is disposed in the receiving groove 3114. The edge of the receiving groove 3114 has a welding surface 3115, and the edge of the diverter plate 3141 is welded to the welding surface 3115, so as to ensure that the diverter portion 314 and the bottom of the valve seat 311 have good sealing performance when connected.

[0063] The bottom edge of the housing 100 is provided with a connection groove, and the valve seat 311 is inserted into the connection groove and protrudes to the outside of the housing 100. The valve guide 312 is connected to the valve seat 311 and communicates with the cold plate 310, and the valve seat 311 is welded to the edge of the connection groove.

[0064] It is understandable that the valve seat 311 is positioned by the connecting groove, and the valve seat 311 can form a fixed whole with the housing 100 after being welded to the edge of the connecting groove, thereby providing support and positioning for the assembly of the valve guide 312 and the cold plate 310 .

[0065] In some embodiments, the valve seat 311 may include a plug-in portion 3111 and a protruding portion 3112, the plug-in portion 3111 is connected to the protruding portion 3112, the plug-in portion 3111 is plugged into the connection groove, the protruding portion 3112 is located outside the housing 100, and the valve guide 312 is connected to the upper end surface of the protruding portion 3112. The thickness of the protruding portion 3112 may be greater than the thickness of the plug-in portion 3111.

[0066] It can be understood that a step structure can be formed at the position where the plug-in portion 3111 is connected to the protrusion 3112. When the valve seat 311 is inserted into the connecting groove, the step structure can abut against the outer wall of the frame 110, thereby facilitating limiting the installation position of the valve seat 311 relative to the frame 110.

[0067] Exemplarily, a welding edge 3113 is provided between the plug-in portion 3111 and the protruding portion 3112 , and the welding edge 3113 is welded to the edge of the connecting groove, thereby improving the connection reliability and structural strength between the valve seat 311 and the frame 110 .

[0068] In some embodiments, the valve seat 311 has a through hole 3116 that passes through the upper and lower sides of the valve seat 311, and the refrigerant flow pipe 315 is disposed in the through hole 3116. One end of the refrigerant flow pipe 315 facing the valve guide 312 at least partially protrudes from the upper end surface of the valve seat 311.

[0069] It is understandable that the diameter of the through hole 3116 on the valve seat 311 may be larger than the outer diameter of the refrigerant flow pipe 315. The valve seat 311 has a good fixing effect on the diverter 314 of the cold plate 310 and can avoid interference between the refrigerant flow pipe 315 and the valve seat 311.

[0070] In some embodiments, the valve guide 312 has a flow cavity 3121, and the refrigerant flow tube 315 is inserted into the flow cavity 3121; the thermal management module 300 may also include a first seal 3152, and the outer wall of the refrigerant flow tube 315 is provided with a first sealing groove 3151, the first seal 3152 is located in the first sealing groove 3151, and the first seal 3152 abuts against the inner wall of the flow cavity 3121, thereby ensuring good sealing performance between the refrigerant flow tube 315 and the valve guide 312 to avoid refrigerant leakage.

[0071] It is understandable that there can be multiple first sealing grooves 3151 and multiple first sealing members 3152, and multiple first sealing grooves 3151 are arranged at intervals along the length direction of the refrigerant flow pipe 315, so that a multi-channel sealing structure can be formed between the refrigerant flow pipe 315 and the valve guide 312 to improve the sealing performance. Multiple first sealing members 3152 and multiple first sealing grooves 3151 are arranged one by one.

[0072] For example, the first sealing member 3152 may be a sealing ring. The specific number of the first sealing groove 3151 and the corresponding first sealing member 3152 may be two, three or more, which is not specifically limited in the embodiment of the present application.

[0073] In some embodiments, a second sealing groove 3122 is provided on one side of the valve guide 312 facing the valve seat 311, and the second sealing groove 3122 is provided around the outer edge of the flow chamber 3121 facing the valve seat 311. The thermal management module 300 may further include a second sealing member 3123, which is located in the second sealing groove 3122 and abuts against the upper end surface of the valve seat 311, so as to seal the gap between the valve seat 311 and the valve guide 312, thereby preventing external gas or dust impurities from entering the interior of the housing 100 through the valve seat 311.

[0074] It can be understood that since there is a gap between the through hole 3116 and the refrigerant flow tube 315, the second seal 3123 can isolate the gap from the external space and prevent external gas from entering the valve seat 311 through the through hole 3116, that is, the second seal 3123 can achieve an airtight effect.

[0075] Exemplarily, the second sealing member 3123 may be a sealing ring, and the material of the second sealing member 3123 may be an elastic material such as rubber, silicone, etc., which is not specifically limited in the embodiment of the present application.

[0076] In a possible implementation, the valve guide 312 may include a valve guide body 3124 and a connection portion 3125, wherein the connection portion 3125 is connected to both sides of the valve guide body 3124. The connection portion 3125 has a mounting hole, the valve seat 311 has a threaded hole opposite to the mounting hole, and the valve guide 312 is provided with a threaded fastener 3126, which passes through the mounting hole and is connected to the threaded hole, thereby improving the connection reliability and structural strength between the valve guide 312 and the valve seat 311.

[0077] Exemplarily, there may be two connection parts 3125, and both connection parts 3125 are integrally formed with the valve guide body 3124. The two connection parts 3125 are symmetrically distributed on both sides of the valve guide body 3124. The threaded fastener 3126 may be a bolt, and the connection part 3125 may increase the connection height between the threaded fastener 3126 and the valve seat 311, thereby improving the connection reliability of the threaded fastener 3126.

[0078] In one possible implementation, the shell 100 may include a frame 110, and the connecting groove is located on the side of the frame 110 facing the cold plate 310, and the valve seat 311 protrudes from the connecting groove on the side facing the cold plate 310, thereby ensuring that the contact position between the valve seat 311 and the connecting groove has good sealing.

[0079] In some embodiments, the housing 100 may further include an upper cover 120 and a bottom guard plate 130, which are respectively connected to the upper and lower sides of the frame 110 and are jointly arranged to form the accommodating cavity 101. The position of the bottom guard plate 130 corresponding to the valve seat 311 may abut against the bottom guard plate 130, and the valve seat 311 protruding relative to the connection groove may ensure close abutment with the bottom guard plate 130.

[0080] It is understood that the upper cover 120 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. 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.

[0081] Exemplarily, the frame 110 can be fixed by splicing profiles, and the frame 110 can be square or approximately square in structure. The profile cross-section of the frame 110 can be in the shape of "mouth", "day", etc., and the embodiments of the present application do not make specific limitations on this.

[0082] 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 on this.

[0083] As an alternative embodiment, the refrigerant circulation pipe 315 can include a refrigerant inlet pipe 315a and a refrigerant outlet pipe 315b. The valve guide 312 has a refrigerant inlet 3127 and a refrigerant outlet 3128. The refrigerant inlet pipe 315a is communicated with the refrigerant inlet 3127, and the refrigerant outlet pipe 315b is communicated with the refrigerant outlet 3128. Both the refrigerant inlet 3127 and the refrigerant outlet 3128 are located on the side of the valve guide 312 away from the housing 100.

[0084] It can be understood that the refrigerant inlet 3127 and the refrigerant outlet 3128 are both arranged on the valve guide 312 and face the same side, which improves the convenience of docking the valve guide 312 with the external pipeline.

[0085] In some embodiments, the cold plate 310 can include a cold plate body 313 and a shunt portion 314. The shunt portion 314 is connected to the cold plate body 313, and the shunt portion 314 protrudes to the outside of the housing 100. The shunt portion 314 is connected to the valve seat 311 and is communicated with the valve guide 312, so as to ensure the smoothness of the cooling medium entering and leaving the cold plate 310 through the valve guide 312.

[0086] It can be understood that the cold plate body 313 is located below the housing 100, and at least part of the area of the cold plate body 313 faces the battery cell assembly 200. The shunt portion 314 is opposite to the lower part of the valve seat 311. The cooling medium can enter the shunt portion 314 through the valve guide 312, and then be shunted from the shunt portion 314 into a plurality of refrigerant channels on the cold plate body 313 to cool each battery cell module 210 of the battery cell assembly 200. When the refrigerant returns, it is collected through the shunt portion 314 and flows out through the valve guide 312, thereby completing the circulation of the refrigerant in the cold plate 310.

[0087] Exemplarily, the cold plate body 313 is welded to the circumferential edge of the housing 100. In this way, the connection strength between the cold plate 310 and the housing 100 can be improved, and the housing 100 can be ensured to have good sealing performance.

[0088] In the embodiment of the present application, the thermal management module 300 may further include a heating film 320 , which is bonded 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 contacts the bottom side of the cell assembly 200 .

[0089] It is understandable 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 down, 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 and heated, the heating film 320 emits heat by electric heating and transfers the heat to the battery cell assembly 200 to increase the operating temperature of the battery cell assembly 200. At this time, the cold plate 310 does not work.

[0090] Exemplarily, the heating film 320 and the cold plate 310 may be bonded together using a thermally conductive adhesive, thereby improving heat transfer efficiency and reducing heat loss.

[0091] It should be noted that in the battery assembly 10 provided in the embodiment of the present application, the heating film 320 has a larger contact area on the bottom side of the battery cell assembly 200, which quickly increases the temperature of the battery cell assembly 200, thereby improving the internal space utilization of the battery assembly 10 while improving the thermal management efficiency of the battery assembly 10.

[0092] The embodiment of the present application also provides a vehicle, which may include the battery assembly 10 in the above technical solution. The vehicle provided in the embodiment of the present application may 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 specifically limited in the embodiment of the present application.

[0093] It can be understood that the vehicle provided in the embodiment of the present application 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.

[0094] The vehicle provided in the embodiment of the present application has all the technical solutions and all the technical effects of the aforementioned battery assembly 10, which will not be repeated here.

[0095] An embodiment of the present application provides a battery assembly and a vehicle, the battery assembly including a shell, a battery cell assembly and a thermal management module, the shell having a accommodating cavity, and the battery cell assembly is arranged in the accommodating cavity; the thermal management module includes a cold plate, a valve seat and a valve guide, the cold plate is arranged on the bottom side of the shell, and the cold plate is configured to cool the battery cell assembly through the phase change of the refrigerant, the valve seat is connected to the outside of the shell, the valve guide is connected to the valve seat, the cold plate has a diversion portion protruding to the outside of the shell, and the diversion portion is connected to the valve seat; the diversion portion has a refrigerant flow pipe, and the refrigerant flow pipe passes through the valve seat and is connected to the valve guide, and the cold plate can realize the inflow and outflow of the refrigerant through the valve guide, which improves the convenience of connecting and assembling the cold plate pipeline, and can improve the cooling efficiency of the cold plate to the battery cell module, and has a better thermal management effect.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A battery assembly (10), characterized in that: The battery assembly (10) comprises a housing (100), a battery cell assembly (200) and a thermal management module (300), wherein the housing (100) has a receiving cavity (101), and the battery cell assembly (200) is arranged in the receiving cavity (101); the thermal management module (300) comprises a cold plate (310), a valve seat (311) and a valve guide (312), wherein the cold plate (310) is arranged on the bottom side of the housing (100), and the cold plate (310) is configured to cool the battery cell assembly (200) by phase change of a refrigerant; The valve seat (311) is connected to the outside of the shell (100), the valve guide (312) is connected to the valve seat (311), the cold plate (310) has a diverter portion (314) protruding to the outside of the shell (100), and the diverter portion (314) is connected to the valve seat (311); the diverter portion (314) has a refrigerant flow pipe (315), and the refrigerant flow pipe (315) passes through the valve seat (311) and is connected to the valve guide (312).

2. The battery assembly (10) according to claim 1, characterized in that: The diverter portion (314) comprises a diverter plate (3141) and a diverter boss (3142); the diverter boss (3142) is welded to the diverter plate (3141); and the refrigerant flow pipe (315) is arranged on the diverter boss (3142).

3. The battery assembly (10) according to claim 2, characterized in that: The valve seat (311) has a receiving groove (3114) on the side facing away from the valve guide (312), and the diverter boss (3142) is arranged in the receiving groove (3114); the edge of the receiving groove (3114) has a welding surface (3115), and the edge of the diverter plate (3141) is welded to the welding surface (3115).

4. The battery assembly (10) according to any one of claims 1 to 3, characterized in that: The valve seat (311) has a through hole (3116), and the through hole (3116) passes through the upper and lower sides of the valve seat (311), and the refrigerant circulation pipe (315) is passed through the through hole (3116); one end of the refrigerant circulation pipe (315) facing the valve guide (312) at least partially protrudes from the upper end surface of the valve seat (311).

5. The battery assembly (10) according to any one of claims 1 to 3, characterized in that: The valve guide (312) has a circulation cavity (3121), and the refrigerant circulation pipe (315) is inserted into the circulation cavity (3121); the thermal management module (300) also includes a first sealing member (3152), and the outer wall of the refrigerant circulation pipe (315) is provided with a first sealing groove (3151), the first sealing member (3152) is located in the first sealing groove (3151), and the first sealing member (3152) abuts against the inner wall of the circulation cavity (3121).

6. The battery assembly (10) according to claim 5, characterized in that: There are multiple first sealing grooves (3151) and multiple first sealing members (3152), and the multiple first sealing grooves (3151) are arranged at intervals along the length direction of the refrigerant circulation pipe (315); the multiple first sealing members (3152) and the multiple first sealing grooves (3151) are arranged one by one.

7. The battery assembly (10) according to claim 5, characterized in that: A second sealing groove (3122) is provided on the side of the valve guide (312) facing the valve seat (311), and the second sealing groove (3122) is arranged around the outer edge of one end of the flow cavity (3121) facing the valve seat (311); the thermal management module (300) also includes a second sealing member (3123), the second sealing member (3123) is located in the second sealing groove (3122), and the second sealing member (3123) is abutted against the upper end surface of the valve seat (311).

8. The battery assembly (10) according to any one of claims 1 to 3, characterized in that: The valve guide (312) comprises a valve guide body (3124) and a connecting portion (3125), wherein the connecting portion (3125) is connected to two sides of the valve guide body (3124); the connecting portion (3125) has a mounting hole, and the valve seat (311) has a threaded hole opposite to the mounting hole; the valve guide (312) is provided with a threaded fastener (3126), and the threaded fastener (3126) passes through the mounting hole and is connected to the threaded hole.

9. The battery assembly (10) according to any one of claims 1 to 3, characterized in that: The refrigerant circulation pipe (315) includes a refrigerant inlet pipe (315a) and a refrigerant outlet pipe (315b), and the valve guide (312) has a refrigerant inlet (3127) and a refrigerant outlet (3128). The refrigerant inlet pipe (315a) is connected to the refrigerant inlet (3127), and the refrigerant outlet pipe (315b) is connected to the refrigerant outlet (3128); the refrigerant inlet (3127) and the refrigerant outlet (3128) are both located on the side of the valve guide (312) away from the shell (100).

10. A vehicle, characterized in that: A battery assembly (10) comprising any one of claims 1 to 9.

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