Battery device, refrigerant heat exchange component and electric device

Abstract

Provided in the present application are a battery device (100), a refrigerant heat exchange component (30) and an electric device. The battery device (100) comprises a battery cell assembly (210) and the refrigerant heat exchange component (30), wherein a first heat exchange flow channel (311) and a second heat exchange flow channel (312) of the refrigerant heat exchange component (30) are arranged symmetrically about a central axis (301); an inlet (321) and an outlet (322) are provided inside a connector component (32) of the refrigerant heat exchange component (30); and a flow-splitting node (33) is formed inside the connector component (32) or inside the refrigerant heat exchange component (30), the inlet (321) is in communication with the first heat exchange flow channel and the second heat exchange flow channel by means of the flow-splitting node (33), and the flow-splitting node (33) is located on the central axis (301) or adjacent to the central axis (301). In the battery device (100) provided in the embodiments of the present application, the flow-splitting node (33) can more evenly distribute a heat exchange medium to the first heat exchange flow channel (311) and the second heat exchange flow channel (312), so as to improve temperature uniformity.

Description

Battery devices, refrigerant heat exchange components and electrical appliances

[0001] This application claims priority to Chinese Patent Application No. 202510198929.8, filed on February 21, 2025, entitled “Battery Device, Refrigerant Heat Exchanger and Electrical Device”, which is incorporated herein by reference in its entirety. Technical Field

[0002] This application relates to the field of battery structure technology, and in particular provides a battery device, a refrigerant heat exchange component, and an electrical device. Background Technology

[0003] During the charging and discharging process, the battery device releases a lot of heat. The battery device is usually equipped with a refrigerant heat exchange component, which exchanges heat with the internal battery cells to achieve the purpose of cooling.

[0004] In related technologies, uneven temperature is prone to occur on the surface of refrigerant heat exchange components, resulting in different cooling effects on individual battery cells in different areas of the refrigerant heat exchange components, which in turn affects the performance and lifespan of the battery device.

[0005] Application content

[0006] The purpose of this application is to provide a battery device, a refrigerant heat exchange component, and an electrical device, aiming to solve the problem in the related art where uneven surface temperature of the refrigerant heat exchange component affects the cooling effect on the battery cell assembly.

[0007] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0008] In a first aspect, embodiments of this application provide a battery device, including a battery cell assembly and a refrigerant heat exchange component. The refrigerant heat exchange component is configured to exchange heat with the battery cell assembly. The refrigerant heat exchange component has a first heat exchange channel and a second heat exchange channel inside. A heat exchange region is formed on the refrigerant heat exchange component corresponding to the first and second heat exchange channels. The heat exchange region is located close to or in contact with the battery cell assembly. A central axis is formed between the first and second heat exchange channels, and the first and second heat exchange channels are symmetrically arranged about the central axis. A connector component is provided on the refrigerant heat exchange component, and an inlet and an outlet are provided inside the connector component. A flow-diverting node is formed inside the connector component or inside the refrigerant heat exchange component. The inlet is connected to the first and second heat exchange channels through the flow-diverting node, and the outlet is connected to the first and second heat exchange channels. The flow-diverting node is located on or adjacent to the central axis.

[0009] The beneficial effects of this application's embodiments: The battery device provided in this application's embodiments utilizes the heat exchange area of ​​the refrigerant heat exchange component to perform heat exchange and cooling treatment on the battery cell assembly. In the heat exchange area, the first and second heat exchange channels inside the refrigerant heat exchange component are symmetrically arranged about the central axis. At the same time, the flow splitting node is set on or adjacent to the central axis. Thus, during the process of the heat exchange medium introduced by the connector component through the inlet into the first and second heat exchange channels through the flow splitting node, because the flow splitting node is close to the central axis, the flow splitting node can more evenly distribute the heat exchange medium into the first and second heat exchange channels, making the flow of the heat exchange medium in the symmetrical first and second heat exchange channels more balanced. This can effectively reduce the temperature difference in the heat exchange area caused by uneven flow splitting, thereby improving the temperature uniformity of the heat exchange area of ​​the refrigerant heat exchange component, and thus improving the cooling effect on the battery cell assembly, ensuring the performance and service life of the battery device.

[0010] In some embodiments, the distance between the diversion node and the central axis is m, where 0 ≤ m ≤ 50 mm.

[0011] By adopting the above technical solution, the distance between the distribution node and the central axis is limited to less than or equal to 50 mm, so that the distribution node is set close to or on the central axis, thereby improving the uniformity of the distribution of heat exchange medium from the distribution node to the first heat exchange channel and the second heat exchange channel.

[0012] In some embodiments, a flow splitting node is disposed inside a refrigerant heat exchange component, and the refrigerant heat exchange component is further provided with a first flow splitting channel and a second flow splitting channel. The flow splitting node is connected to the first heat exchange channel through the first flow splitting channel, and the flow splitting node is connected to the second heat exchange channel through the second flow splitting channel.

[0013] By adopting the above technical solution, the inlet of the connector component can introduce heat exchange medium into the diversion node inside the refrigerant heat exchange component. The heat exchange medium is diverted at the diversion node to the first diversion channel and the second diversion channel, and is introduced into the first heat exchange channel from the first diversion channel and into the second heat exchange channel from the second diversion channel.

[0014] In some embodiments, the inlet is directly opposite the branching node.

[0015] By adopting the above technical solution, since the dryness of the heat exchange medium is minimal when it is introduced from the inlet, the smaller the dryness, the smaller the impact on the flow distribution. The heat exchange medium introduced from the inlet can directly enter the flow distribution node and be distributed to the first heat exchange channel and the second heat exchange channel through the flow distribution node. This can effectively reduce the impact of the dryness of the heat exchange medium on the flow distribution, thereby further improving the uniformity of the flow distribution.

[0016] In some embodiments, the refrigerant heat exchange component is further provided with a flow guide channel, one end of which is connected to the inlet and the other end of which is connected to the flow branching node.

[0017] By adopting the above technical solution, the heat exchange medium introduced through the inlet can be guided to the distribution node through the flow guide channel, and then distributed to the first heat exchange channel and the second heat exchange channel by the distribution node.

[0018] In some embodiments, the shunt node is located within the heat exchange area.

[0019] By adopting the above technical solution, the heat exchange medium introduced through the inlet can be directly introduced into the heat exchange area through the guide channel, and then distributed to the first heat exchange channel and the second heat exchange channel by the distribution node in the heat exchange area.

[0020] In some embodiments, the shunt node is located between the heat exchange area and the connector component.

[0021] By adopting the above technical solution, the flow splitting node is arranged between the heat exchange area and the joint component, and the flow splitting node is closer to the joint component, thereby reducing the change in dryness of the heat exchange medium flowing to the flow splitting node, reducing the influence of the dryness of the heat exchange medium on the flow splitting, and thus improving the uniformity of the flow splitting.

[0022] In some embodiments, the number of first heat exchange channels and second heat exchange channels are both multiple; the first branch channel includes a first main branch channel and multiple first sub-branch channels, the first main branch channel is connected to a branch node, the multiple first sub-branch channels are sequentially and intermittently connected to the first main branch channel, and the multiple first sub-branch channels are respectively connected to the first heat exchange channel; the second branch channel includes a second main branch channel and multiple second sub-branch channels, the second main branch channel is connected to a branch node, the multiple second sub-branch channels are sequentially and intermittently connected to the second main branch channel, and the multiple second sub-branch channels are respectively connected to the second heat exchange channel.

[0023] By adopting the above technical solution, the diversion node can divert the heat exchange medium to the first main diversion channel and the second main diversion channel, and then divert it to the first heat exchange channel from the multiple first branch diversion channels, and divert it to the multiple second heat exchange channels from the multiple second branch diversion channels.

[0024] In some embodiments, a plurality of first branch flow channels and a plurality of second branch flow channels are arranged symmetrically about the central axis.

[0025] By adopting the above technical solution, the symmetrically arranged first and second branch flow channels can further improve the uniformity of heat exchange medium distribution.

[0026] In some embodiments, the first main branch flow channel and the second main branch flow channel are arranged symmetrically about the central axis.

[0027] By adopting the above technical solution, the symmetrically arranged first and second main diversion channels can further improve the uniformity of heat exchange medium diversion.

[0028] In some embodiments, a flow branch node is disposed inside the connector component, and the connector component is further provided with a plurality of flow branch ports, with the inlet connected to the plurality of flow branch ports through the flow branch node; the refrigerant heat exchange component is further provided with a first flow channel, one end of the first flow channel being connected to the corresponding flow branch port, and the other end of the first flow channel being connected to the first heat exchange channel and the second heat exchange channel; and / or, the refrigerant heat exchange component is further provided with a second flow channel and a third flow channel, the second flow channel being connected to the first heat exchange channel and the corresponding flow branch port respectively, and the third flow channel being connected to the second heat exchange channel and the corresponding flow branch port respectively.

[0029] By adopting the above technical solution, the heat exchange medium introduced through the inlet can be diverted to multiple diversion ports by the diversion node set inside the joint component, and then introduced into the first flow channel from the diversion port. The medium is then introduced into the first heat exchange channel and the second heat exchange channel from the first flow channel, and / or, introduced into the second flow channel and the third flow channel respectively from the multiple diversion ports, and then introduced into the first heat exchange channel from the second flow channel, and into the second heat exchange channel from the third flow channel.

[0030] In some embodiments, the first drainage channel includes a first sub-drainage channel and a second sub-drainage channel, one end of the first sub-drainage channel and the second sub-drainage channel intersect and are connected to the branch port, the other end of the first sub-drainage channel is connected to the first heat exchange channel, and the other end of the second sub-drainage channel is connected to the second heat exchange channel.

[0031] By adopting the above technical solution, the diversion port can guide the diverted heat exchange medium to the intersection of the first sub-drainage channel and the second sub-drainage channel, and then guide it into the first heat exchange channel and the second heat exchange channel respectively to achieve heat exchange and cooling operation.

[0032] In some embodiments, the first sub-drainage channel and the second sub-drainage channel are symmetrically arranged about the central axis.

[0033] By adopting the above technical solution, the symmetrically arranged first and second sub-channels can more evenly introduce the heat exchange medium into the first and second heat exchange channels.

[0034] In some embodiments, the second drainage channel includes a plurality of third sub-drainage channels, one end of which intersects and is connected to a branch port, and the other end of which is connected to a plurality of first heat exchange channels respectively; the third drainage channel includes a plurality of fourth sub-drainage channels, one end of which intersects and is connected to a branch port, and the other end of which is connected to a plurality of second heat exchange channels respectively.

[0035] By adopting the above technical solution, some of the branch outlets introduce the branched heat exchange medium to the confluence of multiple third sub-channels, and the multiple third sub-channels introduce the heat exchange medium into multiple first channels; at the same time, another part of the branch outlets introduces the branched heat exchange medium to the confluence of multiple fourth sub-channels, and the multiple fourth sub-channels introduce the heat exchange medium into multiple second channels.

[0036] In some embodiments, the second and third drainage channels are symmetrically arranged about the central axis.

[0037] By adopting the above technical solution, the symmetrically arranged second and third heat exchange channels can more evenly introduce the heat exchange medium into the first and second heat exchange channels.

[0038] In some embodiments, the inlet is used to introduce a phase change material medium into the first heat exchange channel and the second heat exchange channel.

[0039] By adopting the above technical solution, a phase change material medium is introduced into the first heat exchange channel and the second heat exchange channel through the inlet. The phase change material medium absorbs heat through phase change in the heat exchange channel to achieve efficient cooling.

[0040] Secondly, this application also provides a refrigerant heat exchange component, which has a first heat exchange channel and a second heat exchange channel inside, and heat exchange areas are formed on the refrigerant heat exchange component corresponding to the first heat exchange channel and the second heat exchange channel; a central axis is formed between the first heat exchange channel and the second heat exchange channel, and the first heat exchange channel and the second heat exchange channel are symmetrically arranged about the central axis; a connector component is provided on the refrigerant heat exchange component, and an inlet and an outlet are provided inside the connector component; a flow splitting node is formed inside the connector component or inside the refrigerant heat exchange component, and the inlet is connected to the first heat exchange channel and the second heat exchange channel through the flow splitting node, and the outlet is connected to the first heat exchange channel and the second heat exchange channel; wherein, the flow splitting node is located on or adjacent to the central axis.

[0041] The beneficial effects of the embodiments of this application are as follows: In the heat exchange component provided by the embodiments of this application, the first heat exchange channel and the second heat exchange channel are symmetrically arranged about the central axis in the heat exchange area. At the same time, the flow splitting node is set on or adjacent to the central axis. In this way, when the heat exchange medium introduced by the connector component through the inlet is introduced into the first heat exchange channel and the second heat exchange channel through the flow splitting node, the flow splitting node can distribute the heat exchange medium more evenly to the first heat exchange channel and the second heat exchange channel because it is close to the central axis. This makes the flow rate of the heat exchange medium in the symmetrical first heat exchange channel and the second heat exchange channel more balanced, thereby effectively reducing the temperature difference in the heat exchange area caused by uneven flow splitting and improving the temperature uniformity of the heat exchange area.

[0042] Thirdly, embodiments of this application also provide an electrical device, including a battery device as described above or a refrigerant heat exchange component as described above, wherein the battery device is used to provide electrical energy.

[0043] The beneficial effects of the embodiments of this application are as follows: The electrical device provided in the embodiments of this application includes the above-mentioned battery device or the above-mentioned refrigerant heat exchange component. On the basis of the better heat dissipation effect of the above-mentioned refrigerant heat exchange component or battery device, the performance and service life of the electrical device are effectively improved. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0046] Figure 2 is an exploded view of the battery device provided in an embodiment of this application;

[0047] Figure 3 is an exploded view of the refrigerant heat exchange component and housing provided in an embodiment of this application;

[0048] Figure 4 is a structural schematic diagram of the connector component provided in an embodiment of this application;

[0049] Figure 5 is a structural schematic diagram of the first type of refrigerant heat exchange component provided in the embodiment of this application;

[0050] Figure 6 is a structural schematic diagram of the first type of refrigerant heat exchange component provided in the embodiment of this application;

[0051] Figure 7 is a structural schematic diagram of the first type of refrigerant heat exchange component provided in the embodiment of this application;

[0052] Figure 8 is a structural schematic diagram of the first type of refrigerant heat exchange component provided in the embodiment of this application;

[0053] Figure 9 is a structural schematic diagram of the first type of refrigerant heat exchange component provided in the embodiments of this application.

[0054] The following are the labeling elements in the figure:

[0055] 1000, vehicles;

[0056] 100. Battery assembly; 200. Controller; 300. Motor;

[0057] 10. Housing; 11. First housing; 12. Second housing; 20. Individual battery cell; 210. Individual battery cell assembly;

[0058] 30. Refrigerant heat exchange component; 301. Central axis; 31. Heat exchange zone; 311. First heat exchange channel; 312. Second heat exchange channel; 32. Connector component; 321. Inlet; 322. Outlet; 33. Flow branch node; 34. First flow branch channel; 341. First main flow branch channel; 342. First branch flow branch channel; 35. Second flow branch channel; 351. Second main flow branch channel; 352. Second branch flow branch channel; 36. Guide channel; 37. First diversion channel; 371. First sub-diversion channel; 372. Second sub-diversion channel; 38. Second diversion channel; 381. Third sub-diversion channel; 39. Third diversion channel; 391. Fourth sub-diversion channel. Detailed Implementation

[0059] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0060] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0063] In recent years, new energy vehicles have experienced rapid development, with their market share increasing significantly. Achieving rapid and efficient charging is a pressing issue for the new energy vehicle industry. Fast charging is a mainstream solution for quickly replenishing energy in new energy vehicles, but its implementation faces numerous challenges. During fast charging, individual battery cells generate a large amount of heat, causing a sharp rise in the internal temperature of the battery, which severely impacts its performance and lifespan. In related technologies, battery packs primarily use cold plates to cool the internal battery cells through heat exchange. A heat exchange medium is introduced into the channels of the cold plate, flowing through the channels and exchanging heat with the battery cells inside the pack to achieve heat dissipation. However, uneven flow of the heat exchange medium across multiple channels can lead to uneven temperature distribution on the surface of the cold plate. This results in varying cooling effects on the battery cells in different areas of the heat exchange components, ultimately affecting the performance and lifespan of the battery pack.

[0064] Based on the above considerations, in order to solve the problem of uneven surface temperature of refrigerant heat exchange components in related technologies, which affects the cooling effect on battery cells, a battery device is designed. This device symmetrically arranges a first heat exchange channel and a second heat exchange channel about the central axis inside the refrigerant heat exchange component, and sets the flow splitting node on or near the central axis. This improves the uniformity of the heat exchange medium introduced from the inlet of the connector component into the first and second heat exchange channels via the flow splitting node. This results in a more balanced flow of the heat exchange medium within the symmetrical first and second heat exchange channels, effectively reducing the temperature difference in the heat exchange area caused by uneven flow splitting. This improves the temperature uniformity of the heat exchange area of ​​the refrigerant heat exchange component, thereby enhancing the cooling effect on the battery cells and ensuring the performance and lifespan of the battery device.

[0065] The battery device disclosed in this application can be used as a power source in electrical devices or as an energy storage element in various energy storage systems.

[0066] Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0067] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0068] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0069] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Please refer to Figure 2, which is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 210 for providing voltage and capacity. The battery cell assembly 210 may include multiple battery cells 20, which are connected in series, parallel, or mixed connection through a busbar.

[0071] In some embodiments, the battery cell assembly 210 is typically formed by arranging a plurality of battery cells 20.

[0072] As an example, the battery cell assembly 210 can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into an independent module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0073] In some embodiments, the battery device may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 210, the battery cell assemblies 210 being housed in the housing 10.

[0074] As an example, the battery cell assembly 210 can be a battery module, and the battery cell assembly 210 can be housed in the housing 10 by fixing the battery module in the housing 10.

[0075] As an example, the battery cell assembly 210 can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0076] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 to house the battery cell assembly 210. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0077] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to house the battery cell assembly 210.

[0078] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0079] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0080] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0081] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0082] According to some embodiments of this application, referring to Figures 3 to 5, this application provides a battery device 100, including a battery cell assembly 210 and a refrigerant heat exchange component 30. The refrigerant heat exchange component 30 has a first heat exchange channel 311 and a second heat exchange channel 312 inside. A heat exchange region 31 is formed on the refrigerant heat exchange component 30 corresponding to the first heat exchange channel 311 and the second heat exchange channel 312. The heat exchange region 31 is disposed close to or in contact with the battery cell assembly 210. A central axis 301 is formed between the first heat exchange channel 311 and the second heat exchange channel 312. The second heat exchange channel 312 is symmetrically arranged about the central axis 301; a connector 32 is provided on the refrigerant heat exchange component 30, and an inlet 321 and an outlet 322 are provided inside the connector 32; a flow splitting node 33 is formed inside the connector 32 or inside the refrigerant heat exchange component 30, and the inlet 321 is connected to the first heat exchange channel 311 and the second heat exchange channel 312 through the flow splitting node 33, and the outlet 322 is connected to the first heat exchange channel 311 and the second heat exchange channel 312; wherein, the flow splitting node 33 is located on or adjacent to the central axis 301.

[0083] The refrigerant heat exchange component 30 can refer to a component used for heat exchange with the battery cell assembly 210 to achieve cooling. The refrigerant heat exchange component 30 can be a plate-like structure with a first heat exchange channel 311 and a second heat exchange channel 312 formed inside; optionally, the refrigerant heat exchange component 30 can be, but is not limited to, a metal or composite plate structure such as an aluminum plate, copper plate, iron plate, steel plate, copper-aluminum composite plate, or steel-aluminum composite plate. Exemplarily, in some embodiments, the refrigerant heat exchange component 30 can include a heat exchange plate and a channel plate. The channel plate is processed by stamping, rolling, or other methods to form recessed channels. The heat exchange plate and the channel plate are welded together to form an integral unit, and the heat exchange plate surrounds the channel to form the first heat exchange channel 311 and the second heat exchange channel 312.

[0084] The first heat exchange channel 311 and the second heat exchange channel 312 are used for the flow of the heat exchange medium. The heat exchange medium can be water, air, a mixture of water and ethylene glycol, a refrigerant, a phase change material, etc., and the heat exchange medium can be circulated. In some embodiments, the heat exchange medium can also be a solid, for example, paraffin wax, etc. The heat exchange function can be achieved through the change of the state of the heat exchange medium. For example, when paraffin wax changes from solid to liquid, it can absorb heat to achieve the effect of cooling the battery cell assembly 210. The refrigerant heat exchange component 30 can also be called a water-cooled plate, a direct-cooled plate, a liquid-cooled plate, a heat exchange plate, a temperature regulating plate, etc.

[0085] Optionally, the refrigerant heat exchange component 30 can be disposed inside the housing 10; or, the refrigerant heat exchange component 30 can also be part of the housing 10, for example, as the top or bottom plate of the housing 10; the refrigerant heat exchange component 30 is used to contact or approach the battery cell assembly 210 to achieve heat exchange and heat dissipation. Exemplarily, in some embodiments, the housing 10 assembly may include a first housing 11 and a second housing 12, wherein the first housing 11 may include a frame and a cover plate that seals an opening on one side of the frame, and the second housing 12 may employ the refrigerant heat exchange component 30; in this embodiment, the refrigerant heat exchange component 30 is a plate structure, and the refrigerant heat exchange component 30 seals an opening on the other side of the frame, so that the refrigerant heat exchange component 30, the frame, and the cover plate together enclose a cavity for accommodating the battery cell assembly 210.

[0086] The refrigerant heat exchange component 30 has a first heat exchange channel 311 and a second heat exchange channel 312 inside. The first heat exchange channel 311 and the second heat exchange channel 312 refer to flow channel structures formed inside the refrigerant heat exchange component 30. The heat exchange medium can flow inside the flow channel structure and can fully contact the inner wall surface of the flow channel structure. Therefore, the heat exchange medium can absorb the heat dissipated by the battery cell assembly 210 through the refrigerant heat exchange component 30 to achieve heat exchange and cooling. For example, in some embodiments, the heat exchange medium can be Freon, alkanes, ammonia, carbon dioxide, difluoromethane, tetrafluoroethane, etc. The heat exchange medium made of the above materials undergoes a phase change in the first heat exchange channel 311 and the second heat exchange channel 312 to absorb heat, thereby achieving rapid cooling.

[0087] The heat exchange region 31 refers to the area on the refrigerant heat exchange component 30 where the first heat exchange channel 311 and the second heat exchange channel 312 are correspondingly arranged. It should be understood that in the heat exchange region 31, the heat exchange medium achieves a better heat exchange effect with the outside through the refrigerant heat exchange component 30. By positioning the heat exchange region 31 close to or in contact with the battery cell assembly 210, the heat exchange and cooling effect of the first heat exchange channel 311 and the second heat exchange channel 312 on the battery cell assembly 210 is further enhanced. Exemplarily, in some embodiments, the battery cell assembly 210 can be positioned close to or in contact with the heat exchange region 31 of the refrigerant heat exchange component 30 by means of abutment, adhesion, snap-fit ​​connection, bracket connection, etc.

[0088] The number of first heat exchange channels 311 can be one or more; it should be understood that a first heat exchange channel 311 refers to a complete channel structure that is simultaneously connected to the outlet 322 of the connector component 32 and the diversion node 33. The heat exchange medium can be introduced from the inlet 321 of the connector component 32 to the diversion node 33, and diverted by the diversion node 33 to the first heat exchange channel 311. After flowing through the first heat exchange channel 311, the heat exchange medium is discharged from the outlet 322. Similarly, the number of second heat exchange channels 312 can be one or more; it should be understood that a second heat exchange channel 312 refers to a complete channel structure that is simultaneously connected to the outlet 322 of the connector component 32 and the branch node 33. The heat exchange medium can be introduced from the inlet 321 of the connector component 32 to the branch node 33, and then branched by the branch node 33 to the second heat exchange channel 312. After flowing through the second heat exchange channel 312, the heat exchange medium is discharged from the outlet 322.

[0089] The first heat exchange channel 311 and the second heat exchange channel 312 are symmetrically arranged about the central axis 301. The central axis 301 can be any straight line parallel to the surface of the refrigerant heat exchange component 30. For example, the central axis 301 can be the axis of symmetry of the refrigerant heat exchange component 30, or any line intersecting the axis of symmetry of the refrigerant heat exchange component 30. In some embodiments, when the refrigerant heat exchange component 30 is a rectangular plate structure, the central axis 301 can be the axis of symmetry of the rectangular plate structure, for example, an axis of symmetry parallel to the side of the rectangular plate structure, or an axis of symmetry passing through two opposite vertices, etc.

[0090] The connector component 32 is disposed on the refrigerant heat exchange component 30. Optionally, the connector component 32 can be fixedly assembled to the refrigerant heat exchange component 30 by welding process (e.g., brazing). The connector component 32 is provided with an inlet 321 and an outlet 322 inside. Understandably, the inlet 321 is used to introduce the heat exchange medium so that the heat exchange medium is diverted through the diversion node 33 into the first heat exchange channel 311 and the second heat exchange channel 312; the outlet 322 is used to allow the heat exchange medium in the first heat exchange channel 311 and the second heat exchange channel 312 to be discharged to the outside.

[0091] The diversion node 33 can refer to a flow channel node used to divert and form multiple streams of fluid. Optionally, the diversion node 33 can be set inside the connector component 32, that is, after the inlet 321 is divided into multiple streams of heat exchange medium fluid by the diversion node 33, the multiple streams of heat exchange medium fluid are respectively introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 inside the refrigerant heat exchange component 30; or, the diversion node 33 can be set inside the refrigerant heat exchange component 30, that is, the connector component 32 introduces a stream of heat exchange medium fluid into the refrigerant heat exchange component 30 through the inlet 321, and the diversion node 33 divides it into multiple streams of heat exchange medium fluid, which are then respectively introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312.

[0092] In this embodiment, the flow splitting node 33 is set on the central axis 301, or the flow splitting node 33 is adjacent to the central axis 301. In this way, after the connector component 32 introduces the heat exchange medium into the flow splitting node 33 through the inlet 321, the flow splitting node 33 located on or adjacent to the central axis 301 then provides heat exchange medium to the first heat exchange channel 311 and the second heat exchange channel 312 which are symmetrical about the central axis 301. The uniformity of the heat exchange medium flow splitting into the first heat exchange channel 311 and the second heat exchange channel 312 is higher, thereby improving the balance of the flow rate in the first heat exchange channel 311 and the second heat exchange channel 312.

[0093] The battery device 100 provided in this application embodiment utilizes the heat exchange region 31 of the refrigerant heat exchange component 30 to perform heat exchange and cooling treatment on the battery cell assembly 210. In the heat exchange region 31, the first heat exchange channel 311 and the second heat exchange channel 312 inside the refrigerant heat exchange component 30 are symmetrically arranged about the central axis 301. At the same time, the flow splitting node 33 is arranged on or adjacent to the central axis 301. Thus, the heat exchange medium introduced by the connector component 32 through the inlet 321 is introduced into the first heat exchange channel 311 and the second heat exchange channel 312 through the flow splitting node 33. During the heat transfer process, since the flow splitting node 33 is close to the central axis 301, the flow splitting node 33 can distribute the heat transfer medium more evenly to the first heat transfer channel 311 and the second heat transfer channel 312, making the flow rate of the heat transfer medium in the symmetrical first heat transfer channel 311 and the second heat transfer channel 312 more balanced. This can effectively reduce the temperature difference in the heat transfer area 31 caused by uneven flow splitting, thereby improving the temperature uniformity of the heat transfer area 31 of the refrigerant heat exchange component 30, and thus improving the cooling effect on the battery cell assembly 210, so as to ensure the performance and service life of the battery device 100.

[0094] Please refer to Figures 3 to 5. In some embodiments, the distance between the diversion node 33 and the central axis 301 is m, where 0 ≤ m ≤ 50 mm.

[0095] It should be understood that the distance m between the diversion node 33 and the central axis 301 refers to the distance from the diversion node 33 to the central axis 301 in the direction perpendicular to the central axis 301. Exemplarily, in some embodiments, the diversion node 33 may be disposed inside the connector component 32, which is offset from the central axis 301, as shown in FIG. 5; in this case, the distance between the connector component 32 and the central axis 301 is m.

[0096] In this embodiment, the distance m between the diversion node 33 and the central axis 301 is limited to less than or equal to 50 mm. For example, the distance m between the diversion node 33 and the central axis 301 can be 0, in which case the diversion node 33 is located on the central axis 301. Alternatively, the distance m between the diversion node 33 and the central axis 301 can be any value less than 50 mm, such as, but not limited to, 1 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.

[0097] This configuration limits the distance between the flow distribution node 33 and the central axis 301 to less than or equal to 50 mm, so that the flow distribution node 33 is positioned close to or on the central axis 301, thereby improving the uniformity of heat exchange medium distribution from the flow distribution node 33 to the first heat exchange channel 311 and the second heat exchange channel 312.

[0098] Referring to Figures 4, 6 to 8, in some embodiments, the flow splitting node 33 is disposed inside the refrigerant heat exchange component 30. The refrigerant heat exchange component 30 is also provided with a first flow splitting channel 34 and a second flow splitting channel 35. The flow splitting node 33 is connected to the first heat exchange channel 311 through the first flow splitting channel 34, and the flow splitting node 33 is connected to the second heat exchange channel 312 through the second flow splitting channel 35.

[0099] The flow splitting node 33 is located inside the refrigerant heat exchange component 30; that is, the heat exchange medium can be diverted inside the refrigerant heat exchange component 30 via the flow splitting node 33 and then introduced into the first heat exchange channel 311 and the second heat exchange channel 312.

[0100] Optionally, the diversion node 33 can be disposed anywhere inside the refrigerant heat exchange component 30; for example, the diversion node 33 can be disposed at the location where the connector component 32 is disposed in the refrigerant heat exchange component 30, for example, directly opposite the inlet 321 of the connector component 32, or near or adjacent to the connector component 32; or, the diversion node 33 can be disposed inside the heat exchange area 31, for example, located anywhere between the first heat exchange channel 311 and the second heat exchange channel 312; or, the diversion node 33 can also be disposed in the area between the connector component 32 and the heat exchange area 31.

[0101] The first diversion channel 34 and the second diversion channel 35 refer to the flow channel structures formed inside the refrigerant heat exchange component 30, where the heat exchange medium can flow. Specifically, the first diversion channel 34 connects the diversion node 33 and the first heat exchange channel 311, and the second diversion channel 35 connects the diversion node 33 and the second heat exchange channel 312. Thus, the heat exchange medium can be introduced into the first heat exchange channel 311 from the first diversion channel 34 at the diversion node 33, and into the second heat exchange channel 312 from the second diversion channel 35, achieving the purpose of diverting the medium through the diversion node 33 to the first heat exchange channel 311 and the second heat exchange channel 312.

[0102] The number of first diversion channels 34 can be one, two, or more than two. When there are multiple first diversion channels 34, they can be connected to the same or different parts of the first heat exchange channel 311. Thus, the diversion node 33 can simultaneously introduce heat exchange medium into the first heat exchange channel 311 through one or more first diversion channels 34.

[0103] Similarly, the number of second diversion channels 35 can be one, two, or more than one; when there are multiple second diversion channels 35, they can be connected to the same or different parts of the second heat exchange channel 312. Thus, the diversion node 33 can simultaneously introduce heat exchange medium into the second heat exchange channel 312 through one or more second diversion channels 35.

[0104] With this configuration, the inlet 321 of the connector component 32 can introduce heat exchange medium into the diversion node 33 inside the refrigerant heat exchange component 30. The heat exchange medium is diverted at the diversion node 33 to the first diversion channel 34 and the second diversion channel 35, and is introduced into the first heat exchange channel 311 by the first diversion channel 34 and into the second heat exchange channel 312 by the second diversion channel 35.

[0105] Referring to Figures 3 and 6, in some embodiments, the inlet 321 is directly opposite the branch node 33.

[0106] In this embodiment, the flow splitting node 33 disposed inside the refrigerant heat exchange component 30 is directly opposite to the inlet 321 of the connector component 32 disposed on the refrigerant heat exchange component 30; that is, the flow splitting node 33 is disposed at the location of the refrigerant heat exchange component 30 for mounting the connector component 32, and when the connector component 32 is fixedly mounted on the refrigerant heat exchange component 30, the inlet 321 of the connector component 32 is directly opposite to the flow splitting node 33.

[0107] Thus, when the connector component 32 introduces the heat exchange medium into the refrigerant heat exchange component 30 through the inlet 321, the heat exchange medium can be directly introduced into the diversion node 33 through the inlet 321, and then simultaneously diverted to the first heat exchange channel 311 and the second heat exchange channel 312 by the diversion node 33.

[0108] It should be understood that after the heat exchange medium enters the refrigerant heat exchange component 30, the heat exchange medium begins to undergo a phase change heat absorption process, and the dryness of the heat exchange medium will gradually increase.

[0109] With this configuration, the heat exchange medium has the lowest dryness when it is introduced through the inlet 321. The lower the dryness, the less impact it has on the flow distribution. The heat exchange medium introduced through the inlet 321 can directly enter the flow distribution node 33 and be distributed to the first heat exchange channel 311 and the second heat exchange channel 312 through the flow distribution node 33. This can effectively reduce the impact of the dryness of the heat exchange medium on the flow distribution, thereby further improving the uniformity of the flow distribution.

[0110] Referring to Figures 3 and 7, in some embodiments, the refrigerant heat exchange component 30 is further provided with a flow guide channel 36. One end of the flow guide channel 36 is connected to the inlet 321, and the other end of the flow guide channel 36 is connected to the diversion node 33.

[0111] In this embodiment, the flow splitting node 33 is located anywhere on the refrigerant heat exchange component 30 other than the connector component 32. The connector component 32 introduces the heat exchange medium into the flow channel 36 through the inlet 321. After the heat exchange medium is introduced into the flow splitting node 33 through the flow channel 36, it is then split into the first heat exchange channel 311 and the second heat exchange channel 312 for heat exchange operation.

[0112] The flow channel 36 refers to the flow channel structure formed inside the refrigerant heat exchange component 30, through which the heat exchange medium can flow. Optionally, the number of flow channels 36 can be one, two, or more than two. For example, when there is one flow channel 36, the heat exchange medium introduced through the inlet 321 is guided to the flow branch node 33 via the flow channel 36, as shown in Figure 7. When there are multiple flow channels 36, such as two, the number of flow branch nodes 33 can also be two. The two flow channels 36 and the two flow branch nodes 33 can be symmetrically arranged about the central axis 301. The heat exchange medium introduced through the inlet 321 can be simultaneously guided to the two flow branch nodes 33 via the two flow channels 36, and then introduced into the first heat exchange channel 311 and the second heat exchange channel 312 by the two flow branch nodes 33.

[0113] With this configuration, the heat exchange medium introduced through the inlet 321 can be guided to the distribution node 33 via the guide channel 36, and then distributed by the distribution node 33 to the first heat exchange channel 311 and the second heat exchange channel 312. Thus, the distribution node 33 can be set at any location of the refrigerant heat exchange component 30, such as in the heat exchange area 31 or in the area between the heat exchange area 31 and the connector component 32, to accommodate different usage scenarios of the refrigerant heat exchange component 30.

[0114] Referring to Figures 3 and 6, in some embodiments, the flow splitting node 33 is located within the heat exchange region 31.

[0115] In this embodiment, the flow splitting node 33 is located within the heat exchange region 31. For example, the flow splitting node 33 may be located between the first heat exchange channel 311 and the second heat exchange channel 312 and in the middle of the heat exchange region 31, as shown in FIG6; or, the flow splitting node 33 may be located between the first heat exchange channel 311 and the second heat exchange channel 312 and at the edge of the heat exchange region 31.

[0116] With this configuration, the heat exchange medium introduced through the inlet 321 can be directly introduced into the heat exchange area 31 through the guide channel 36, and then distributed to the first heat exchange channel 311 and the second heat exchange channel 312 by the branch node 33 in the heat exchange area 31.

[0117] Referring to Figures 3 and 8, in some embodiments, the diversion node 33 is located between the heat exchange area 31 and the connector component 32.

[0118] In this embodiment, the flow splitting node 33 is disposed between the heat exchange area 31 and the connector component 32, as shown in FIG8; thus, the inlet 321 of the connector component 32 can be connected to the flow splitting node 33 through the flow guide channel 36, and then the flow splitting node 33 can guide the flow into the first heat exchange channel 311 and the second heat exchange channel 312 through the first flow splitting channel 34 and the second flow splitting channel 35 respectively.

[0119] With this configuration, by placing the flow splitting node 33 between the heat exchange zone 31 and the joint component 32, the flow splitting node 33 is closer to the joint component 32, thereby reducing the change in dryness of the heat exchange medium flowing to the flow splitting node 33, reducing the impact of the dryness of the heat exchange medium on the flow splitting, and thus improving the uniformity of the flow splitting.

[0120] Referring to Figures 3, 6, and 8, in some embodiments, the number of first heat exchange channels 311 and second heat exchange channels 312 are multiple; the first branch channel 34 includes a first main branch channel 341 and multiple first branch channels 342, the first main branch channel 341 is connected to the branch node 33, the multiple first branch channels 342 are sequentially and intermittently connected to the first main branch channel 341, and the multiple first branch channels 342 are respectively connected to the first heat exchange channel 311; the second branch channel 35 includes a second main branch channel 351 and multiple second branch channels 352, the second main branch channel 351 is connected to the branch node 33, the multiple second branch channels 352 are sequentially and intermittently connected to the second main branch channel 351, and the multiple second branch channels 352 are respectively connected to the second heat exchange channel 312.

[0121] The first branch flow channel 34 includes a first main branch flow channel 341 and multiple first branch flow channels 342. Thus, the branch node 33 can introduce the heat exchange medium into the first main branch flow channel 341, and then the first main branch flow channel 341 can distribute the medium to the multiple first branch flow channels 342, so that the multiple first branch flow channels 342 can simultaneously introduce the heat exchange medium into the corresponding first heat exchange channel 311, thereby enabling the heat exchange medium to be simultaneously introduced into the multiple first heat exchange channels 311 to achieve heat exchange.

[0122] Optionally, the number of first branch flow channels 342 can be any number of two, three, or more; the number of first heat exchange channels 311 can be any number of two, three, or more. The number of first branch flow channels 342 and first heat exchange channels 311 can be the same, with multiple first branch flow channels 342 connected to their respective first heat exchange channels 311.

[0123] The second branch flow channel 35 includes a second main branch flow channel 351 and multiple second branch flow channels 352. Thus, the branch node 33 can introduce the heat exchange medium into the second main branch flow channel 351, and then the second main branch flow channel 351 can distribute the medium to the multiple second branch flow channels 352, so that the multiple second branch flow channels 352 can simultaneously introduce the heat exchange medium into the corresponding second heat exchange channel 312, thereby enabling the heat exchange medium to be simultaneously introduced into the multiple second heat exchange channels 312 to achieve heat exchange.

[0124] Optionally, the number of second branch flow channels 352 can be any number of two, three, or more; the number of second heat exchange flow channels 312 can be any number of two, three, or more. The number of second branch flow channels 352 and second heat exchange flow channels 312 can be the same, with multiple second branch flow channels 352 respectively connected to their corresponding second heat exchange flow channels 312.

[0125] The plurality of first heat exchange channels 311 and the plurality of second heat exchange channels 312 may be symmetrically distributed about the central axis 301; the first main branch channel 341 and the second main branch channel 351 may also be approximately symmetrically distributed about the central axis 301, and at least a portion of the plurality of first branch channels 342 and at least a portion of the plurality of second branch channels 352 may also be approximately symmetrically distributed about the central axis 301.

[0126] With this configuration, the flow branch node 33 can distribute the heat exchange medium to the first main flow branch channel 341 and the second main flow branch channel 351, and then distribute it to the multiple first branch flow branch channels 342 to the multiple first heat exchange channels 311, and distribute it to the multiple second branch flow branch channels 352 to the multiple second heat exchange channels 312.

[0127] Referring to Figures 3 and 6, in some embodiments, a plurality of first branch flow channels 342 and a plurality of second branch flow channels 352 are symmetrically arranged about the central axis 301.

[0128] Optionally, portions of the plurality of first branch flow channels 342 and portions of the plurality of second branch flow channels 352 are symmetrically arranged about the central axis 301. For example, when there are three first branch flow channels 342 and three second branch flow channels 352, two of the first branch flow channels 342 and two of the second branch flow channels 352 are symmetrically arranged about the central axis 301, while the other first branch flow channel 342 and the other second branch flow channel 352 are asymmetrical.

[0129] Alternatively, the plurality of first branch flow channels 342 and the plurality of second branch flow channels 352 are symmetrically arranged about the central axis 301. For example, when the number of first branch flow channels 342 and second branch flow channels 352 are three each, the three first branch flow channels 342 and the three second branch flow channels 352 are symmetrically arranged about the central axis 301.

[0130] With this configuration, the symmetrically arranged first branch flow channel 342 and second branch flow channel 352 can further improve the uniformity of heat exchange medium distribution.

[0131] Referring to Figures 3 and 6, in some embodiments, the first main branch channel 341 and the second main branch channel 351 are symmetrically arranged about the central axis 301.

[0132] With this configuration, when the heat exchange medium is diverted to the first main diversion channel 341 and the second main diversion channel 351, the symmetrical arrangement of the first main diversion channel 341 and the second main diversion channel 351 can improve the uniformity of the heat exchange medium entering the first main diversion channel 341 and the second main diversion channel 351, thereby further improving the uniformity of the heat exchange medium diversion.

[0133] Referring to Figures 3 and 9, in some embodiments, a flow branch node (in this embodiment, the flow branch node is not visible because it is inside the connector) is disposed inside the connector component 32. The connector component 32 is also provided with multiple flow branch ports (not shown in the figures). The inlet port 321 is connected to the multiple flow branch ports through the flow branch node. The refrigerant heat exchange component 30 is also provided with a first flow channel 37. One end of the first flow channel 37 is connected to the corresponding flow branch port, and the other end of the first flow channel 37 is connected to the first heat exchange channel 311 and the second heat exchange channel 312. And / or, the refrigerant heat exchange component 30 is also provided with a second flow channel 38 and a third flow channel 39. The second flow channel 38 is connected to the first heat exchange channel 311 and the corresponding flow branch port, respectively, and the third flow channel 39 is connected to the second heat exchange channel 312 and the corresponding flow branch port, respectively.

[0134] In this embodiment, the flow splitting node is set inside the connector component 32; thus, the heat exchange medium introduced through the inlet 321 can be split at the flow splitting node inside the connector component 32, forming multiple streams of heat exchange medium and introducing them to multiple flow splitting ports respectively.

[0135] The refrigerant heat exchange component 30 may have a first flow channel 37 inside. It should be understood that the first flow channel 37 refers to a flow channel structure formed inside the refrigerant heat exchange component 30, within which the heat exchange medium can flow. There can be multiple first flow channels 37, for example, the same number as the number of branch outlets; thus, multiple branch outlets respectively guide the heat exchange medium into the corresponding first flow channel 37, and then the first flow channels 37 synchronously guide the heat exchange medium into the connected first heat exchange channel 311 and second heat exchange channel 312, as shown in Figure 9.

[0136] Optionally, the first flow channel 37 may consist of a main flow channel structure and at least two branch flow channel structures disposed on the main flow channel structure, with the branch outlets connected to the main flow channel structure and the at least two branch flow channel structures respectively connected to the first heat exchange channel 311 or the second heat exchange channel 312. Alternatively, the first flow channel 37 may consist of at least two branch flow channel structures, with one end of the at least two branch flow channel structures converging at the corresponding branch outlets, and the other end of the at least two branch flow channel structures respectively connected to the first heat exchange channel 311 or the second heat exchange channel 312.

[0137] And / or, a second flow channel 38 and a third flow channel 39 may be provided inside the refrigerant heat exchange component 30, as shown in Figure 9. It should be understood that the second flow channel 38 and the third flow channel 39 refer to flow channel structures formed inside the refrigerant heat exchange component 30, within which the heat exchange medium can flow. The number of second flow channels 38 can be one, two, or more; the number of third flow channels 39 can be two, three, or more; wherein the number of second flow channels 38 can be the same as the number of third flow channels 39. Thus, the two opposite ends of the second flow channel 38 are respectively connected to a corresponding branch port and a first heat exchange channel 311, and the two opposite ends of the third flow channel 39 are respectively connected to a corresponding branch port and a second heat exchange channel 312.

[0138] With this configuration, the heat exchange medium introduced through the inlet 321 can be diverted to multiple diversion ports through the diversion node inside the joint component 32, and then introduced into the first guide channel 37 from the diversion port. From the first guide channel 37, it is introduced into the first heat exchange channel 311 and the second heat exchange channel 312 respectively, and / or, it is introduced into the second guide channel 38 and the third guide channel 39 respectively from the multiple diversion ports, and then introduced into the first heat exchange channel 311 from the second guide channel 38, and into the second heat exchange channel 312 from the third guide channel 39.

[0139] Referring to Figures 3 and 9, in some embodiments, the first drainage channel 37 includes a first sub-drainage channel 371 and a second sub-drainage channel 372. One end of the first sub-drainage channel 371 and the second sub-drainage channel 372 intersects and is connected to the branch port. The other end of the first sub-drainage channel 371 is connected to the first heat exchange channel 311, and the other end of the second sub-drainage channel 372 is connected to the second heat exchange channel 312.

[0140] The first sub-channel 371 and the second sub-channel 372 refer to two independent channel structures. One end of the first sub-channel 371 and the second sub-channel 372 intersects and connects to the branch port. Thus, the heat exchange medium exiting the branch port can be diverted to the first sub-channel 371 and the second sub-channel 372, and then diverted to the first heat exchange channel 311 and the second heat exchange channel 312 through the first sub-channel 371 and the second sub-channel 372.

[0141] Wherein, a first drainage channel 37 may include a first sub-drainage channel 371 and a second sub-drainage channel 372; or a first drainage channel 37 may include two or more first sub-drainage channels 371 and a corresponding number of second sub-drainage channels 372, with one end of the multiple first sub-drainage channels 371 and the multiple second sub-drainage channels 372 intersecting and connecting to the branch port.

[0142] With this configuration, the diversion port can guide the diverted heat exchange medium to the intersection of the first sub-drainage channel 371 and the second sub-drainage channel 372, and then guide it into the first heat exchange channel 311 and the second heat exchange channel 312 respectively to achieve heat exchange and cooling operations.

[0143] Referring to Figures 3 and 9, in some embodiments, the first sub-drainage channel 371 and the second sub-drainage channel 372 are symmetrically arranged about the central axis 301.

[0144] With this configuration, when the heat exchange medium is introduced into the diversion port, the heat exchange medium can be diverted more evenly to the symmetrically arranged first sub-diversion channel 371 and second sub-diversion channel 372, so that the first sub-diversion channel 371 and second sub-diversion channel 372 can introduce the heat exchange medium more evenly into the first heat exchange channel 311 and second heat exchange channel 312.

[0145] Referring to Figures 3 and 9, in some embodiments, the second flow channel 38 includes a plurality of third sub-flow channels 381, one end of which intersects and connects to a branch port, and the other end of which is connected to a plurality of first heat exchange channels 311 respectively; the third flow channel 39 includes a plurality of fourth sub-flow channels 391, one end of which intersects and connects to a branch port, and the other end of which is connected to a plurality of second heat exchange channels 312 respectively.

[0146] The second flow channel 38 includes a plurality of third sub-flow channels 381; optionally, the number of third sub-flow channels 381 can be any number of two, three, or more. One end of the plurality of third sub-flow channels 381 intersects and is connected to the branch port, so that the heat exchange medium exiting from the branch port can be branched into the plurality of third sub-flow channels 381, and then branched into the plurality of first heat exchange channels 311 through the plurality of third sub-flow channels 381.

[0147] The third flow channel 39 includes a plurality of fourth sub-flow channels 391; optionally, the number of fourth sub-flow channels 391 can be any number of two, three, or more. One end of the plurality of fourth sub-flow channels 391 intersects and is connected to the branch port, so that the heat exchange medium exiting from the branch port can be branched into the plurality of fourth sub-flow channels 391, and then branched into the plurality of second heat exchange channels 312 through the plurality of fourth sub-flow channels 391.

[0148] With this configuration, some of the branch outlets guide the diverted heat exchange medium to the confluence of multiple third sub-channels 381, and the multiple third sub-channels 381 guide the heat exchange medium into multiple first heat exchange channels 311; at the same time, another part of the branch outlets guides the diverted heat exchange medium to the confluence of multiple fourth sub-channels 391, and the multiple fourth sub-channels 391 guide the heat exchange medium into multiple second heat exchange channels 312.

[0149] Referring to Figures 3 and 9, in some embodiments, the second drainage channel 38 and the third drainage channel 39 are symmetrically arranged about the central axis 301.

[0150] With this configuration, when the heat exchange medium is introduced into the diversion port, the heat exchange medium can be diverted more evenly to the symmetrically arranged second diversion channel 38 and third diversion channel 39, so that the second diversion channel 38 and third diversion channel 39 can introduce the heat exchange medium more evenly into the first heat exchange channel 311 and the second heat exchange channel 312.

[0151] Please refer to Figures 3 to 5. In some embodiments, the inlet 321 is used to introduce a phase change material medium into the first heat exchange channel 311 and the second heat exchange channel 312.

[0152] In this embodiment, the cooling medium can be a phase change material medium; it should be understood that the phase change material medium can be, but is not limited to, Freon, alkanes, ammonia, carbon dioxide, difluoromethane, tetrafluoroethane, etc. By utilizing the phase change material medium to absorb heat through vaporization and phase change within the first heat exchange channel 311 and the second heat exchange channel 312 of the refrigerant heat exchange component 30, a highly efficient cooling effect on the battery device 100 is achieved.

[0153] With this configuration, phase change material medium is introduced into the first heat exchange channel 311 and the second heat exchange channel 312 through the inlet 321. The phase change material medium absorbs heat through phase change in the heat exchange channel to achieve efficient cooling.

[0154] The battery device 100 provided in this application will now be further described according to specific embodiments.

[0155] Referring to Figures 2 to 9, in this embodiment, the battery device 100 includes a battery cell assembly 210 and a refrigerant heat exchange component 30. The refrigerant heat exchange component 30 is configured to exchange heat with the battery cell assembly 210. The refrigerant heat exchange component 30 has a first heat exchange channel 311 and a second heat exchange channel 312 inside. A heat exchange region 31 is formed on the refrigerant heat exchange component 30 corresponding to the first heat exchange channel 311 and the second heat exchange channel 312. The heat exchange region 31 is disposed close to or in contact with the battery cell assembly 210. A central axis 301 is formed between the first heat exchange channel 311 and the second heat exchange channel 312. The first heat exchange channel 311 and the second heat exchange channel 312 are symmetrically arranged about the central axis 301.

[0156] The refrigerant heat exchange component 30 is provided with a connector component 32, which has an inlet 321 and an outlet 322 inside. In some embodiments, a flow branching node 33 can be formed inside the connector component 32, and the inlet 321 is connected to multiple flow branching ports through the flow branching node 33; the connector component 32 is located on the central axis 301. The refrigerant heat exchange component 30 is also provided with a first flow channel 37 inside, one end of the first flow channel 37 is connected to the corresponding flow branching port, and the other end of the first flow channel 37 is connected to the first heat exchange channel 311 and the second heat exchange channel 312; and / or, the refrigerant heat exchange component 30 is also provided with a second flow channel 38 and a third flow channel 39 inside, the second flow channel 38 is connected to the first heat exchange channel 311 and the corresponding flow branching port respectively, and the third flow channel 39 is connected to the second heat exchange channel 312 and the corresponding flow branching port respectively.

[0157] In another embodiment, the diversion node 33 can be formed inside the refrigerant heat exchange component 30. The inlet 321 is connected to the first heat exchange channel 311 and the second heat exchange channel 312 through the diversion node 33, and the outlet 322 is connected to the first heat exchange channel 311 and the second heat exchange channel 312. The diversion node 33 is located on or adjacent to the central axis 301. In this embodiment, the connector component 32 can be offset from the central axis 301, as shown in FIG7. The inlet 321 of the connector component 32 can be connected to the diversion node 33 located on the central axis 301 through the guide channel 36. Alternatively, the connector component 32 can also be located on the central axis 301. In this embodiment, the diversion node 33 can be located at the connector component 32 and directly opposite the inlet 321; or, the diversion node 33 can be located in the area between the connector component 32 and the heat exchange region 31; or, the diversion node 33 can also be located within the heat exchange region 31.

[0158] Referring to Figures 3 to 5, this embodiment of the application also provides a refrigerant heat exchange component 30. The refrigerant heat exchange component 30 has a first heat exchange channel 311 and a second heat exchange channel 312 inside. Heat exchange regions 31 are formed on the refrigerant heat exchange component 30 corresponding to the first heat exchange channel 311 and the second heat exchange channel 312. A central axis 301 is formed between the first heat exchange channel 311 and the second heat exchange channel 312, and the first heat exchange channel 311 and the second heat exchange channel 312 are symmetrically arranged about the central axis 301. (Refrigerant heat exchange...) The component 30 is provided with a connector component 32, and the connector component 32 is provided with an inlet 321 and an outlet 322 inside; a flow splitting node 33 is formed inside the connector component 32 or inside the refrigerant heat exchange component 30, the inlet 321 is connected to the first heat exchange channel 311 and the second heat exchange channel 312 through the flow splitting node 33 respectively, and the outlet 322 is connected to the first heat exchange channel 311 and the second heat exchange channel 312; wherein, the flow splitting node 33 is located on or adjacent to the central axis 301.

[0159] The refrigerant heat exchange component 30 provided in this application embodiment has a first heat exchange channel 311 and a second heat exchange channel 312 symmetrically arranged about the central axis 301 in the heat exchange region 31. At the same time, a flow splitting node 33 is arranged on or adjacent to the central axis 301. In this way, when the heat exchange medium introduced by the connector component 32 through the inlet 321 is introduced into the first heat exchange channel 311 and the second heat exchange channel 312 through the flow splitting node 33, the flow splitting node 33 can distribute the heat exchange medium more evenly to the first heat exchange channel 311 and the second heat exchange channel 312 because it is close to the central axis 301. This makes the flow rate of the heat exchange medium in the symmetrical first heat exchange channel 311 and the second heat exchange channel 312 more balanced, thereby effectively reducing the temperature difference in the heat exchange region 31 caused by uneven flow splitting and improving the temperature uniformity of the heat exchange region 31.

[0160] Referring to Figures 1 to 3, this application embodiment also provides an electrical device, including the battery device 100 as described above or the refrigerant heat exchange component 30 as described above, wherein the battery device 100 is used to provide electrical energy.

[0161] The electrical device provided in this application embodiment is, for example, the vehicle 1000 mentioned above. The electrical device includes the battery device 100 mentioned above or the refrigerant heat exchange component 30 mentioned above. Based on the superior heat dissipation effect of the refrigerant heat exchange component 30 or the battery device 100, the performance and service life of the electrical device are effectively improved.

[0162] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that: include Battery cell modules; and A refrigerant heat exchange component is configured to exchange heat with the battery cell assembly. The refrigerant heat exchange component has a first heat exchange channel and a second heat exchange channel inside. A heat exchange region is formed on the refrigerant heat exchange component corresponding to the first heat exchange channel and the second heat exchange channel. The heat exchange region is disposed close to or in contact with the battery cell assembly. A central axis is formed between the first heat exchange channel and the second heat exchange channel, and the first heat exchange channel and the second heat exchange channel are symmetrically arranged about the central axis. The refrigerant heat exchange component is provided with a connector component, and the connector component is provided with an inlet and an outlet; a flow splitting node is formed inside the connector component or inside the refrigerant heat exchange component, and the inlet is connected to the first heat exchange channel and the second heat exchange channel through the flow splitting node, and the outlet is connected to the first heat exchange channel and the second heat exchange channel. The diversion node is located on or adjacent to the central axis.

2. The battery device of claim 1, wherein: The distance between the diversion node and the central axis is m, where 0≤m≤50mm.

3. The battery device according to claim 1 or 2, characterized by: The flow splitting node is disposed inside the refrigerant heat exchange component. The refrigerant heat exchange component is also provided with a first flow splitting channel and a second flow splitting channel. The flow splitting node is connected to the first heat exchange channel through the first flow splitting channel, and the flow splitting node is connected to the second heat exchange channel through the second flow splitting channel.

4. The battery device of claim 3, wherein: The inlet is directly opposite the branching node.

5. The battery device according to claim 3, characterized in that: The refrigerant heat exchange component is also provided with a flow guide channel inside, one end of which is connected to the inlet and the other end of which is connected to the flow distribution node.

6. The battery device according to claim 5, characterized in that: The diversion node is located within the heat exchange area.

7. The battery device according to claim 5, characterized in that: The flow splitting node is located between the heat exchange area and the joint component.

8. The battery device according to any one of claims 3 to 7, characterized in that: The number of the first heat exchange channel and the number of the second heat exchange channel are both multiple; the first branch channel includes a first main branch channel and multiple first branch channels, the first main branch channel is connected to the branch node, the multiple first branch channels are sequentially and intermittently connected to the first main branch channel, and the multiple first branch channels are respectively connected to the first heat exchange channel. The second branch flow channel includes a second main branch flow channel and a plurality of second branch flow channels. The second main branch flow channel is connected to the branch node, and the plurality of second branch flow channels are sequentially and intermittently connected to the second main branch flow channel. The plurality of second branch flow channels are respectively connected to the second heat exchange channel.

9. The battery device according to claim 8, characterized in that: Multiple first branch flow channels and multiple second branch flow channels are symmetrically arranged about the central axis.

10. The battery device according to claim 8 or 9, characterized in that: The first main branch channel and the second main branch channel are symmetrically arranged about the central axis.

11. The battery device according to claim 1 or 2, characterized in that: The diversion node is disposed inside the connector component, and the connector component is also provided with multiple diversion ports. The inlet is connected to the multiple diversion ports through the diversion node. The refrigerant heat exchange component is also provided with a first flow channel. One end of the first flow channel is connected to the corresponding branch port, and the other end of the first flow channel is connected to the first heat exchange channel and the second heat exchange channel. And / or, the refrigerant heat exchange component is further provided with a second flow channel and a third flow channel, the second flow channel being connected to the first heat exchange channel and the corresponding branch port, and the third flow channel being connected to the second heat exchange channel and the corresponding branch port.

12. The battery device according to claim 11, characterized in that: The first drainage channel includes a first sub-drainage channel and a second sub-drainage channel. One end of the first sub-drainage channel and the second sub-drainage channel intersect and are connected to the branch port. The other end of the first sub-drainage channel is connected to the first heat exchange channel, and the other end of the second sub-drainage channel is connected to the second heat exchange channel.

13. The battery device according to claim 12, characterized in that: The first sub-drainage channel and the second sub-drainage channel are symmetrically arranged about the central axis.

14. The battery device according to any one of claims 11 to 13, characterized in that: The second flow channel includes multiple third sub-flow channels, one end of which intersects and connects to the branch port, and the other end of which is connected to multiple first heat exchange channels respectively; the third flow channel includes multiple fourth sub-flow channels, one end of which intersects and connects to the branch port, and the other end of which is connected to multiple second heat exchange channels respectively.

15. The battery device according to any one of claims 11 to 14, characterized in that: The second and third drainage channels are symmetrically arranged about the central axis.

16. The battery device according to any one of claims 1 to 15, characterized in that: The inlet is used to introduce phase change material medium into the first heat exchange channel and the second heat exchange channel.

17. A refrigerant heat exchange component, characterized in that: The refrigerant heat exchange component has a first heat exchange channel and a second heat exchange channel inside, and a heat exchange area is formed on the refrigerant heat exchange component corresponding to the first heat exchange channel and the second heat exchange channel; a central axis is formed between the first heat exchange channel and the second heat exchange channel, and the first heat exchange channel and the second heat exchange channel are symmetrically arranged about the central axis. The refrigerant heat exchange component is provided with a connector component, and the connector component is provided with an inlet and an outlet; a flow splitting node is formed inside the connector component or inside the refrigerant heat exchange component, and the inlet is connected to the first heat exchange channel and the second heat exchange channel through the flow splitting node, and the outlet is connected to the first heat exchange channel and the second heat exchange channel. The diversion node is located on or adjacent to the central axis.

18. A battery device, characterized in that: The battery device includes the battery device as described in any one of claims 1 to 16 or the refrigerant heat exchange component as described in claim 17, wherein the battery device is used to provide electrical energy.

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