Battery device, refrigerant heat exchange component and electric device

Abstract

The utility model relates to the technical field of battery structures, and provides a battery device, a refrigerant heat exchange component and an electric device, the battery device comprises a battery monomer assembly and the refrigerant heat exchange component, and a first heat exchange flow channel and a second heat exchange flow channel of the refrigerant heat exchange component are symmetrically arranged about a central axis; a connector part is arranged on the refrigerant heat exchange part, and a guide-in opening and a guide-out opening are formed in the connector part; a flow dividing node is formed in the connector component or the refrigerant heat exchange component, and the guide-in opening communicates with the first heat exchange flow channel and the second heat exchange flow channel through the flow dividing node. Wherein the shunting node is located on the central axis or arranged adjacent to the central axis; according to the battery device provided by the embodiment of the invention, as the shunting node is close to the central axis, the shunting node can more uniformly distribute the heat exchange medium to the first heat exchange runner and the second heat exchange runner, so that the temperature difference of a heat exchange area caused by uneven shunting can be effectively reduced, and the temperature uniformity is improved.

Description

[0001] The present application claims priority to the Chinese Patent Application No. 202420907842.4, filed on April 28, 2024, and entitled "Heat Exchange Device, Battery and Electric Device", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery structure, and particularly provides a battery device, a refrigerant heat exchange component and an electric device. BACKGROUND

[0003] The battery device releases a large amount of heat during charging and discharging. The refrigerant heat exchange component is usually arranged in the battery device to exchange heat with the battery monomer assembly inside the battery device to achieve the purpose of cooling.

[0004] In the related art, the surface of the refrigerant heat exchange component is prone to temperature imbalance, which leads to different cooling effects of different regions of the refrigerant heat exchange component on the battery monomer assembly, and further affects the use performance and service life of the battery device. UTILITY MODEL CONTENT

[0005] The purpose of the embodiments of the present application is to provide a battery device, a refrigerant heat exchange component and an electric device, which aims to solve the problem of temperature imbalance on the surface of the refrigerant heat exchange component in the related art, which affects the cooling effect on the battery monomer assembly.

[0006] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0007] In a first aspect, the embodiments of the present application provide a battery device, which comprises a battery monomer assembly and a refrigerant heat exchange component. The refrigerant heat exchange component is configured to exchange heat with the battery monomer assembly. The refrigerant heat exchange component has a first heat exchange flow channel and a second heat exchange flow channel inside. The refrigerant heat exchange component forms a heat exchange region corresponding to the first heat exchange flow channel and the second heat exchange flow channel. The heat exchange region is arranged close to or in contact with the battery monomer assembly. A central axis is formed between the first heat exchange flow channel and the second heat exchange flow channel. The first heat exchange flow channel and the second heat exchange flow channel are symmetrically arranged about the central axis. A joint component is arranged on the refrigerant heat exchange component. The joint component has a guide inlet and a guide outlet inside. A shunt node is formed inside the joint component or the refrigerant heat exchange component. The guide inlet is connected to the first heat exchange flow channel and the second heat exchange flow channel through the shunt node. The guide outlet is connected to the first heat exchange flow channel and the second heat exchange flow channel. The shunt node is located on the central axis or adjacent to the central axis.

[0008] The beneficial effects of this application embodiment are as follows: The battery device provided in this application embodiment 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 distribute the heat exchange medium more evenly to 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, so as to ensure the performance and service life of the battery device.

[0009] In some embodiments, the distance between the diversion node and the central axis is m, where 0 ≤ m ≤ 50 mm.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] In some embodiments, the inlet is directly opposite the branching node.

[0014] 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.

[0015] In some embodiments, the inner part of the refrigerant heat exchange component is further provided with a flow guide flow channel, one end of the flow guide flow channel is communicated with the guide inlet, and the other end of the flow guide flow channel is communicated with the distribution node.

[0016] By adopting the technical scheme, the heat exchange medium introduced by the guide inlet can be introduced to the distribution node through the flow guide flow channel, and then distributed to the first heat exchange flow channel and the second heat exchange flow channel by the distribution node.

[0017] In some embodiments, the distribution node is located in the heat exchange region.

[0018] By adopting the technical scheme, the heat exchange medium introduced by the guide inlet can be directly introduced into the heat exchange region through the flow guide flow channel, and then distributed to the first heat exchange flow channel and the second heat exchange flow channel by the distribution node in the heat exchange region.

[0019] In some embodiments, the distribution node is located between the heat exchange region and the joint component.

[0020] By adopting the technical scheme, by arranging the distribution node between the heat exchange region and the joint component, the distribution node is closer to the joint component, so that the dryness variation of the heat exchange medium flowing to the distribution node can be reduced, the influence of the dryness of the heat exchange medium on the distribution is reduced, and the uniformity of the distribution is improved.

[0021] In some embodiments, the number of the first heat exchange flow channel and the second heat exchange flow channel is multiple; the first distribution flow channel includes a first main distribution flow channel and multiple first branch distribution flow channels, the first main distribution flow channel is communicated with the distribution node, the multiple first branch distribution flow channels are sequentially and intermittently communicated with the first main distribution flow channel, and the multiple first branch distribution flow channels are respectively communicated with the first heat exchange flow channel; the second distribution flow channel includes a second main distribution flow channel and multiple second branch distribution flow channels, the second main distribution flow channel is communicated with the distribution node, the multiple second branch distribution flow channels are sequentially and intermittently communicated with the second main distribution flow channel, and the multiple second branch distribution flow channels are respectively communicated with the second heat exchange flow channel.

[0022] By adopting the technical scheme, the distribution node can distribute the heat exchange medium to the first main distribution flow channel and the second main distribution flow channel, and then distribute the heat exchange medium to the multiple first heat exchange flow channels through the multiple first branch distribution flow channels and to the multiple second heat exchange flow channels through the multiple second branch distribution flow channels.

[0023] In some embodiments, the multiple first branch distribution flow channels and the multiple second branch distribution flow channels are symmetrically arranged about the central axis.

[0024] By adopting the technical scheme, the symmetrically arranged first branch distribution flow channels and second branch distribution flow channels can further improve the uniformity of the distribution of the heat exchange medium.

[0025] In some embodiments, the first main branch flow channel and the second main branch flow channel are symmetrically arranged about the central axis.

[0026] By adopting the technical solutions described above, the first main branch flow channel and the second main branch flow channel arranged symmetrically can further improve the uniformity of the distribution of the heat exchange medium.

[0027] In some embodiments, the distribution node is arranged in the interior of the joint component, the interior of the joint component is further provided with a plurality of distribution ports, the guide inlet is communicated with the plurality of distribution ports through the distribution node; the interior of the refrigerant heat exchange component is further provided with a first flow guide channel, one end of the first flow guide channel is communicated with a corresponding distribution port, and the other end of the first flow guide channel is communicated with the first heat exchange channel and the second heat exchange channel; and / or, the interior of the refrigerant heat exchange component is further provided with a second flow guide channel and a third flow guide channel, the second flow guide channel is respectively communicated to the first heat exchange channel and a corresponding distribution port, and the third flow guide channel is respectively communicated to the second heat exchange channel and a corresponding distribution port.

[0028] By adopting the technical solutions described above, the heat exchange medium introduced by the guide inlet can be distributed to the plurality of distribution ports through the distribution node arranged in the interior of the joint component, then introduced into the first flow guide channel through the distribution ports, respectively introduced into the first heat exchange channel and the second heat exchange channel through the first flow guide channel, and / or, respectively introduced into the second flow guide channel and the third flow guide channel through the plurality of distribution ports, then introduced into the first heat exchange channel through the second flow guide channel, and introduced into the second heat exchange channel through the third flow guide channel.

[0029] In some embodiments, the first flow guide channel includes a first sub-flow guide channel and a second sub-flow guide channel, one end of the first sub-flow guide channel and the second sub-flow guide channel is communicated with the distribution port, the other end of the first sub-flow guide channel is communicated with the first heat exchange channel, and the other end of the second sub-flow guide channel is communicated with the second heat exchange channel.

[0030] By adopting the technical solutions described above, the distribution port can introduce the distributed heat exchange medium to the intersection of the first sub-flow guide channel and the second sub-flow guide channel, and introduce the heat exchange medium into the first heat exchange channel and the second heat exchange channel through the first sub-flow guide channel and the second sub-flow guide channel respectively to realize the heat exchange and cooling operation.

[0031] In some embodiments, the first sub-flow guide channel and the second sub-flow guide channel are symmetrically arranged about the central axis.

[0032] By adopting the technical solutions described above, the first sub-flow guide channel and the second sub-flow guide channel arranged symmetrically can more uniformly introduce the heat exchange medium to the first heat exchange channel and the second heat exchange channel.

[0033] In some embodiments, the second flow channel includes a plurality of third sub-flow channels, one end of the plurality of third sub-flow channels is connected to the flow distribution port, and the other end of the plurality of third sub-flow channels is connected to the plurality of first heat exchange channels; the third flow channel includes a plurality of fourth sub-flow channels, one end of the plurality of fourth sub-flow channels is connected to the flow distribution port, and the other end of the plurality of fourth sub-flow channels is connected to the plurality of second heat exchange channels.

[0034] By using the above technical solution, part of the flow distribution ports guide the heat exchange medium to the intersection of the plurality of third sub-flow channels, and the heat exchange medium is guided to the plurality of first heat exchange channels by the plurality of third sub-flow channels; at the same time, another part of the flow distribution ports guide the heat exchange medium to the intersection of the plurality of fourth sub-flow channels, and the heat exchange medium is guided to the plurality of second heat exchange channels by the plurality of fourth sub-flow channels.

[0035] In some embodiments, the second flow channel and the third flow channel are symmetrically arranged about the central axis.

[0036] By using the above technical solution, the second flow channel and the third flow channel arranged symmetrically can guide the heat exchange medium to the first heat exchange channel and the second heat exchange channel more uniformly.

[0037] In some embodiments, the inlet is used to guide the phase change material medium into the first heat exchange channel and the second heat exchange channel.

[0038] By using the above technical solution, the phase change material medium is guided into the first heat exchange channel and the second heat exchange channel by the inlet, and the phase change material medium absorbs heat in the heat exchange channel by phase change to achieve efficient cooling.

[0039] In a second aspect, the embodiments of the present application also provide a refrigerant heat exchange component, the refrigerant heat exchange component has a first heat exchange channel and a second heat exchange channel inside, and 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; 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 joint component is arranged on the refrigerant heat exchange component, and an inlet and an outlet are arranged inside the joint component; a flow distribution node is formed inside the joint component or the refrigerant heat exchange component, the inlet is connected to the first heat exchange channel and the second heat exchange channel through the flow distribution node, and the outlet is connected to the first heat exchange channel and the second heat exchange channel; wherein the flow distribution node is located on the central axis or adjacent to the central axis.

[0040] The application embodiment has the beneficial effects that: the refrigerant heat exchange component provided by the application embodiment is symmetrical about the central axis in the heat exchange region, and the distribution node is arranged on or adjacent to the central axis. In the process that the heat exchange medium introduced by the joint component through the guide inlet is introduced into the first heat exchange flow channel and the second heat exchange flow channel through the distribution node, the distribution node can more evenly distribute the heat exchange medium to the first heat exchange flow channel and the second heat exchange flow channel, so that the flow of the heat exchange medium in the symmetrical first heat exchange flow channel and the second heat exchange flow channel is more balanced, thereby effectively reducing the temperature difference of the heat exchange region caused by uneven distribution, and improving the temperature uniformity of the heat exchange region.

[0041] In a third aspect, the application embodiment further provides a power utilization device, which comprises the battery device or the refrigerant heat exchange component.

[0042] The application embodiment has the beneficial effects that: the power utilization device provided by the application embodiment comprises the battery device or the refrigerant heat exchange component, and the use performance and service life of the power utilization device are effectively improved on the basis of the excellent heat dissipation effect of the refrigerant heat exchange component or the battery device. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the application embodiments, the following will briefly introduce the drawings needed to be used in the embodiments or related description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0044] Figure 1 The structural schematic diagram of the vehicle provided by the application embodiment is shown in the figure;

[0045] Figure 2 The exploded view of the battery device provided by the application embodiment is shown in the figure;

[0046] Figure 3 The exploded schematic diagram of the refrigerant heat exchange component and the box provided by the application embodiment is shown in the figure;

[0047] Figure 4 The structural schematic diagram of the joint component provided by the application embodiment is shown in the figure;

[0048] Figure 5 The structural schematic diagram of the first refrigerant heat exchange component provided by the application embodiment is shown in the figure;

[0049] Figure 6 The structural schematic diagram of the first refrigerant heat exchange component provided by the application embodiment is shown in the figure;

[0050] Figure 7 A structure diagram of a first refrigerant heat exchange component provided for an embodiment of the present application is shown in FIG. 1.

[0051] Figure 8 A structure diagram of a first refrigerant heat exchange component provided for an embodiment of the present application is shown in FIG. 1.

[0052] Figure 9 A structure diagram of a first refrigerant heat exchange component provided for an embodiment of the present application is shown in FIG. 1.

[0053] In the drawings, various elements are labeled the same as or similarly to the same or similar elements throughout the drawings and the detailed description, and a repeated explanation is omitted.

[0054] 1000, vehicle;

[0055] 100, battery; 200, controller; 300, motor;

[0056] 10, box body; 11, first box body; 12, second box body; 20, battery cell; 210, battery cell assembly;

[0057] 30, refrigerant heat exchange component; 301, central axis; 31, heat exchange region; 311, first heat exchange flow channel; 312, second heat exchange flow channel; 32, joint component; 321, guide inlet; 322, guide outlet; 33, flow division node; 34, first flow division flow channel; 341, first main flow division flow channel; 342, first branch flow division flow channel; 35, second flow division flow channel; 351, second main flow division flow channel; 352, second branch flow division flow channel; 36, flow guide flow channel; 37, first flow guide flow channel; 371, first sub-flow guide flow channel; 372, second sub-flow guide flow channel; 38, second flow guide flow channel; 381, third sub-flow guide flow channel; 39, third flow guide flow channel; 391, fourth sub-flow guide flow channel. DETAILED DESCRIPTION

[0058] Embodiments of the present application are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0059] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In recent years, new energy vehicles have made a leap in development, and the market share of new energy vehicles is becoming higher and higher; fast and efficient charging is a problem to be solved in the new energy vehicle industry. Fast charging is a mainstream solution for new energy vehicles to achieve fast energy replenishment, and there are many challenges in the implementation process. A large amount of heat will be generated in the battery monomer during fast charging, which will cause the internal temperature of the battery to rise sharply, and then seriously affect the use performance and service life of the battery. In the related technology, the battery device mainly uses a cold plate to exchange heat and cool the internal battery monomer. The heat exchange medium is introduced into the flow channel of the cold plate, and the heat exchange medium flows through the flow channel and exchanges heat with the battery monomer in the box to achieve heat dissipation. However, due to the uneven distribution of the heat exchange medium in multiple flow channels, the surface of the cold plate is prone to temperature imbalance, which leads to different cooling effects of the different regions of the refrigerant heat exchange component on the battery monomer assembly, and then affects the use performance and service life of the battery device.

[0063] Based on the above considerations, in order to solve the problem that the uneven temperature of the surface of the refrigerant heat exchange component in the related art affects the cooling effect of the battery monomer assembly, a battery device is designed. The first heat exchange flow channel and the second heat exchange flow channel are symmetrically arranged about the central axis inside the refrigerant heat exchange component of the battery device, and the shunt node is arranged on or close to the central axis. In this way, the uniformity of the heat exchange medium introduced by the inlet of the joint component into the first heat exchange flow channel and the second heat exchange flow channel is more optimal, so that the flow of the heat exchange medium in the symmetrical first heat exchange flow channel and the second heat exchange flow channel is more balanced, thereby effectively reducing the temperature difference of the heat exchange area caused by uneven shunting, improving the temperature uniformity of the heat exchange area of the refrigerant heat exchange component, and further improving the cooling effect of the battery monomer assembly, so as to ensure the use performance and service life of the battery device.

[0064] The battery device disclosed in the embodiments of the present application can be applied to an electric device as a power supply or applied to various energy storage systems as an energy storage element.

[0065] The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0066] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0067] Please refer to Figure 1 , Figure 1 The vehicle 1000 provided in some embodiments of the present application is a structural schematic diagram. The vehicle 1000 can be a fuel car, a gas car, or a new energy car. The new energy car can be a pure electric car, a hybrid car, or an extended range car, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head, or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of the present application, the battery device 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0069] Please refer to Figure 2 , Figure 2 An exploded view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 referred to in embodiments of the present application can include one or more battery cell assemblies 210 for providing voltage and capacity. The battery cell assembly 210 can include a plurality of battery cells 20 connected in series, in parallel, or in a mixed connection through busbar components.

[0070] In some embodiments, the battery cell assembly 210 is generally formed by an arrangement of a plurality of battery cells 20.

[0071] As an example, the battery cell assembly 210 can be a battery module formed by an arrangement and fixation of a plurality of battery cells 20 into a separate module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 with a cable tie.

[0072] In some embodiments, the battery device can be a battery pack including a case 10 and one or more battery cell assemblies 210 housed in the case 10.

[0073] As an example, the battery cell assembly 210 can be a battery module, and the battery cell assembly 210 can be housed in the case 10 by fixing the battery module in the case 10.

[0074] As an example, the battery cell assembly 210 can also be housed in the case 10 by directly fixing a plurality of battery cells 20 in the case 10.

[0075] As an example, the case 10 can include a first case 11 and a second case 12. The first case 11 and the second case 12 are coupled so that an enclosed space is formed inside the case 10 to house the battery cell assembly 210. The enclosed here means covered or closed, which can be sealed or unsealed. The first case 11 can be a top cover or a bottom plate.

[0076] As an example, the case 10 can 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 an enclosed space is formed inside the case 10 to house the battery cell assembly 210.

[0077] In some embodiments, the case 10 can be a part of a chassis structure of a vehicle 1000. For example, a part of the case 10 can be at least a part of a floor of the vehicle 1000, or a part of the case 10 can be at least a part of a cross beam and a longitudinal beam of the vehicle 1000.

[0078] The technical solutions described in the embodiments of the present application are applicable to various battery monomer 20 using electric devices, for example, mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc., for example, spacecraft includes airplanes, rockets, space shuttles and spaceships, etc.

[0079] In the embodiments of the present application, the battery monomer 20 can be a secondary battery, which refers to a battery monomer 20 that can be activated by charging after discharging.

[0080] The battery monomer 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., which is not limited in the embodiments of the present application.

[0081] According to some embodiments of the present application, referring to Figures 3 to 5 The battery device 100 provided in the embodiments of the present application includes a battery monomer assembly 210 and a refrigerant heat exchange component 30. The refrigerant heat exchange component 30 has a first heat exchange flow channel 311 and a second heat exchange flow channel 312 inside. The refrigerant heat exchange component 30 forms a heat exchange area 31 corresponding to the first heat exchange flow channel 311 and the second heat exchange flow channel 312. The heat exchange area 31 is arranged close to or in contact with the battery monomer assembly 210. A central axis 301 is formed between the first heat exchange flow channel 311 and the second heat exchange flow channel 312. The first heat exchange flow channel 311 and the second heat exchange flow channel 312 are symmetrically arranged about the central axis 301. The refrigerant heat exchange component 30 is provided with a joint component 32. The joint component 32 is internally provided with a guide inlet 321 and a guide outlet 322. A shunt node 33 is formed inside the joint component 32 or the refrigerant heat exchange component 30. The guide inlet 321 is connected to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the shunt node 33. The guide outlet 322 is connected to the first heat exchange flow channel 311 and the second heat exchange flow channel 312. The shunt node 33 is located on the central axis 301 or adjacent to the central axis 301.

[0082] The refrigerant heat exchange component 30 can be a component for heat exchange with the battery monomer assembly 210 to achieve cooling. The refrigerant heat exchange component 30 can be a plate structure with a first heat exchange flow channel 311 and a second heat exchange flow 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, a copper plate, an iron plate, a steel plate, a copper-aluminum composite plate, a steel-aluminum composite plate, etc. Exemplarily, in some embodiments, the refrigerant heat exchange component 30 can include a heat exchange plate body and a flow channel plate body. The flow channel plate body is processed to form recessed channels by stamping, rolling or other methods. The heat exchange plate body and the flow channel plate body are welded to form an integral body, and the heat exchange plate body surrounds the channels to form the first heat exchange flow channel 311 and the second heat exchange flow channel 312.

[0083] The first heat exchange flow channel 311 and the second heat exchange flow 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 glycol, refrigerant, phase change material, etc., and the heat exchange medium can be circulated. In other embodiments, the heat exchange medium can also be a solid, for example, paraffin wax, etc.; heat exchange can be achieved by the state change of the heat exchange medium, for example, when the paraffin wax changes from a solid to a liquid, it can absorb heat to achieve the purpose of cooling the battery monomer assembly 210. The refrigerant heat exchange component 30 can also be referred to as a water cooling plate, a direct cooling plate, a liquid cooling plate, a heat exchange plate, a temperature regulating plate, etc.

[0084] Optionally, the refrigerant heat exchange component 30 can be arranged inside the box body 10; or the refrigerant heat exchange component 30 can also be part of the box body 10, for example, as a top plate or a bottom plate of the box body 10; the refrigerant heat exchange component 30 is in contact with or close to the battery monomer assembly 210 to achieve the purpose of heat exchange and heat dissipation. For example, in some embodiments, the box body 10 assembly can include a first box body 11 and a second box body 12, wherein the first box body 11 can include a frame and a cover plate covering one side opening of the frame, and the second box body 12 can adopt 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 covers the other side opening of the frame, so that the refrigerant heat exchange component 30, the frame and the cover plate together form a containing cavity for accommodating the battery monomer assembly 210.

[0085] The refrigerant heat exchange component 30 has a first heat exchange flow channel 311 and a second heat exchange flow channel 312 inside; wherein the first heat exchange flow channel 311 and the second heat exchange flow channel 312 respectively refer to the flow channel structure formed inside the refrigerant heat exchange component 30, the heat exchange medium can flow inside the flow channel structure, and the heat exchange medium can fully contact the inner wall surface of the flow channel structure, so that the heat exchange medium can absorb the heat emitted by the battery monomer assembly 210 through the refrigerant heat exchange component 30 to achieve the purpose of heat exchange and heat dissipation. For example, in some embodiments, the heat exchange medium can use freon, alkane, ammonia, carbon dioxide, difluoromethane, tetrafluoroethane, etc.; the heat exchange medium of the above-mentioned materials changes phase in the first heat exchange flow channel 311 and the second heat exchange flow channel 312 to absorb heat, so as to achieve the purpose of heat absorption and rapid cooling.

[0086] The heat exchange region 31 refers to a region on the refrigerant heat exchange component 30 corresponding to the first heat exchange flow channel 311 and the second heat exchange flow channel 312. It should be understood that in the heat exchange region 31, the heat exchange medium has a better heat exchange effect with the outside through the refrigerant heat exchange component 30. The heat exchange region 31 is arranged close to or in contact with the battery monomer assembly 210, so that the first heat exchange flow channel 311 and the second heat exchange flow channel 312 have a better heat exchange cooling effect on the battery monomer assembly 210. For example, in some embodiments, the battery monomer assembly 210 can be arranged close to or in contact with the heat exchange region 31 of the refrigerant heat exchange component 30 by abutting, bonding, snap connection, bracket connection, etc.

[0087] The number of the first heat exchange flow channel 311 can be one or any multiple of more than one. It should be understood that one first heat exchange flow channel 311 refers to a complete flow channel structure simultaneously connected to the shunt node 33 and the guide outlet 322 of the joint component 32. The heat exchange medium can be introduced from the guide inlet 321 of the joint component 32 to the shunt node 33, and shunted from the shunt node 33 to the first heat exchange flow channel 311, and then exported from the guide outlet 322 after flowing through the first heat exchange flow channel 311. Similarly, the number of the second heat exchange flow channel 312 can be one or any multiple of more than one. It should be understood that one second heat exchange flow channel 312 refers to a complete flow channel structure simultaneously connected to the shunt node 33 and the guide outlet 322 of the joint component 32. The heat exchange medium can be introduced from the guide inlet 321 of the joint component 32 to the shunt node 33, and shunted from the shunt node 33 to the second heat exchange flow channel 312, and then exported from the guide outlet 322 after flowing through the second heat exchange flow channel 312.

[0088] The first heat exchange flow channel 311 and the second heat exchange flow 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 symmetry axis of the refrigerant heat exchange component 30, or any straight line intersecting the symmetry axis 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 symmetry axis of the rectangular plate structure, for example, the symmetry axis parallel to the side of the rectangular plate structure, or the symmetry axis passing through the opposite two top corners, etc.

[0089] The joint part 32 is arranged on the refrigerant heat exchange part 30, and is optionally fixedly assembled on the refrigerant heat exchange part 30 by a welding process (e.g., brazing). The joint part 32 is internally provided with a guide inlet 321 and a guide outlet 322. It can be understood that the guide inlet 321 is used to guide the heat exchange medium into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the flow splitting node 33; and the guide outlet 322 is used to guide the heat exchange medium in the first heat exchange flow channel 311 and the second heat exchange flow channel 312 out to the outside.

[0090] The flow splitting node 33 can be a flow channel node for splitting to form multiple streams of fluid. The flow splitting node 33 can be arranged in the joint part 32, i.e., after the guide inlet 321 splits the heat exchange medium into multiple streams of fluid, the multiple streams of fluid are guided into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 inside the refrigerant heat exchange part 30; or the flow splitting node 33 can be arranged in the refrigerant heat exchange part 30, i.e., the joint part 32 guides a stream of heat exchange medium into the refrigerant heat exchange part 30 through the guide inlet 321, and the flow splitting node 33 splits the stream of heat exchange medium into multiple streams of fluid which are then guided into the first heat exchange flow channel 311 and the second heat exchange flow channel 312.

[0091] In this embodiment, the flow splitting node 33 is arranged on the central axis 301, or is arranged adjacent to the central axis 301. In this way, after the joint part 32 guides the heat exchange medium into the flow splitting node 33 through the guide inlet 321, the flow splitting node 33 located on or adjacent to the central axis 301 splits the heat exchange medium to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 which are symmetric about the central axis 301, and the uniformity of the split of the heat exchange medium to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 is higher, thereby improving the balance of the flow in the first heat exchange flow channel 311 and the second heat exchange flow channel 312.

[0092] The battery device 100 provided by the embodiments of the present application utilizes the heat exchange region 31 of the refrigerant heat exchange component 30 to perform heat exchange and cooling processing on the battery monomer assembly 210. In the heat exchange region 31, the first heat exchange flow channel 311 and the second heat exchange flow channel 312 inside the refrigerant heat exchange component 30 are symmetrically arranged about the central axis 301, and the shunt node 33 is arranged on or adjacent to the central axis 301. In this way, during the process in which the heat exchange medium introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the shunt node 33 by the joint component 32 through the inlet 321, the shunt node 33 can more uniformly distribute the heat exchange medium to the first heat exchange flow channel 311 and the second heat exchange flow channel 312, so that the flow of the heat exchange medium in the symmetric first heat exchange flow channel 311 and the second heat exchange flow channel 312 is more balanced, thereby effectively reducing the temperature difference of the heat exchange region 31 caused by uneven distribution, improving the uniformity of the heat exchange region 31 of the refrigerant heat exchange component 30, and further improving the cooling effect on the battery monomer assembly 210, so as to guarantee the use performance and service life of the battery device 100.

[0093] For reference Figures 3 to 5 In some embodiments, the distance between the shunt node 33 and the central axis 301 is m, where 0≤m≤50mm.

[0094] It should be understood that the distance m between the shunt node 33 and the central axis 301 refers to the distance from the shunt node 33 to the central axis 301 in the direction perpendicular to the central axis 301. For example, in some embodiments, the shunt node 33 can be arranged inside the joint component 32, and the joint component 32 is arranged away from the central axis 301, as shown in Figure 5 The distance between the joint component 32 and the central axis 301 is m.

[0095] In the embodiments, the distance m between the shunt node 33 and the central axis 301 is limited to be less than or equal to 50mm. For example, the distance m between the shunt node 33 and the central axis 301 can be 0, in which case the shunt node 33 is located on the central axis 301; or the distance m between the shunt node 33 and the central axis 301 can be any value less than 50mm, such as but not limited to 1mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.

[0096] In this way, the distance between the shunt node 33 and the central axis 301 is limited to be within the range of less than or equal to 50mm, so that the shunt node 33 is arranged close to or on the central axis 301, thereby improving the uniformity of the shunt node 33 in distributing the heat exchange medium to the first heat exchange flow channel 311 and the second heat exchange flow channel 312.

[0097] Please refer to Figure 4 、 Figures 6 to 8 In some embodiments, the shunt node 33 is arranged inside the refrigerant heat exchange component 30, and the first shunt flow channel 34 and the second shunt flow channel 35 are also arranged inside the refrigerant heat exchange component 30. The shunt node 33 is connected to the first heat exchange flow channel 311 through the first shunt flow channel 34, and the shunt node 33 is connected to the second heat exchange flow channel 312 through the second shunt flow channel 35.

[0098] The shunt node 33 is arranged inside the refrigerant heat exchange component 30, that is, the heat exchange medium can be introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the shunt node 33 after being shunted inside the refrigerant heat exchange component 30.

[0099] Optionally, the shunt node 33 can be arranged inside any position of the refrigerant heat exchange component 30. For example, the shunt node 33 can be arranged at the position where the refrigerant heat exchange component 30 is arranged with the joint component 32, such as being arranged opposite to the inlet 321 of the joint component 32, or being arranged close to or adjacent to the joint component 32. Alternatively, the shunt node 33 can be arranged inside the heat exchange region 31, such as being arranged at any position between the first heat exchange flow channel 311 and the second heat exchange flow channel 312. Alternatively, the shunt node 33 can also be arranged between the joint component 32 and the heat exchange region 31.

[0100] The first shunt flow channel 34 and the second shunt flow channel 35 respectively refer to flow channel structures formed inside the refrigerant heat exchange component 30, and the heat exchange medium can flow inside the flow channel structures. The first shunt flow channel 34 is used to connect the shunt node 33 and the first heat exchange flow channel 311, and the second shunt flow channel 35 is used to connect the shunt node 33 and the second heat exchange flow channel 312. Thus, the heat exchange medium can be introduced into the first heat exchange flow channel 311 through the first shunt flow channel 34 and introduced into the second heat exchange flow channel 312 through the second shunt flow channel 35 at the shunt node 33, so as to achieve the purpose of being shunted to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the shunt node 33.

[0101] The number of the first shunt flow channel 34 can be one, two, or any multiple of two or more. When the number of the first shunt flow channel 34 is multiple, the multiple first shunt flow channels 34 can be respectively connected to the same position or different positions of the first heat exchange flow channel 311. Thus, the shunt node 33 can introduce the heat exchange medium into the first heat exchange flow channel 311 through one or more first shunt flow channels 34.

[0102] Similarly, the number of the second branch flow channels 35 can be one, two or any multiple of two; when the number of the second branch flow channels 35 is multiple, the multiple second branch flow channels 35 can be connected to the same or different positions of the second heat exchange flow channel 312 respectively. Thus, the branch node 33 can introduce the heat exchange medium into the second heat exchange flow channel 312 through one or more second branch flow channels 35 synchronously.

[0103] In this way, the introduction port 321 of the joint component 32 can introduce the heat exchange medium into the branch node 33 inside the refrigerant heat exchange component 30, and the heat exchange medium is branched to the first branch flow channel 34 and the second branch flow channel 35 at the branch node 33, and is introduced into the first heat exchange flow channel 311 by the first branch flow channel 34, and is introduced into the second heat exchange flow channel 312 by the second branch flow channel 35.

[0104] Please refer to Figure 3 and Figure 6 In some embodiments, the introduction port 321 is opposite to the branch node 33.

[0105] In this embodiment, the branch node 33 inside the refrigerant heat exchange component 30 is arranged opposite to the introduction port 321 of the joint component 32 arranged on the refrigerant heat exchange component 30; that is, the branch node 33 is arranged at the position of the refrigerant heat exchange component 30 for mounting the joint component 32, and when the joint component 32 is fixedly mounted on the refrigerant heat exchange component 30, the introduction port 321 of the joint component 32 is opposite to the branch node 33.

[0106] In this way, when the joint component 32 introduces the heat exchange medium into the refrigerant heat exchange component 30 through the introduction port 321, the heat exchange medium can be directly introduced into the branch node 33 from the introduction port 321, and then branched to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 synchronously by the branch node 33.

[0107] It should be understood that after the heat exchange medium enters the refrigerant heat exchange component 30, the heat exchange medium starts to undergo the phase change heat absorption process, and the dryness of the heat exchange medium gradually increases.

[0108] In this way, since the dryness of the heat exchange medium introduced from the introduction port 321 is the smallest, the smaller the dryness, the smaller the influence on the branching, and the heat exchange medium introduced by the introduction port 321 can directly enter the branch node 33 and be branched to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the branch node 33, so that the influence of the dryness of the heat exchange medium on the branching can be effectively reduced, thereby further improving the uniformity of the branching.

[0109] Please refer to Figure 3 and Figure 7In some embodiments, the inner part of the refrigerant heat exchange component 30 is further provided with a flow guide channel 36, one end of the flow guide channel 36 is communicated with the guide inlet 321, and the other end of the flow guide channel 36 is communicated with the flow distribution node 33.

[0110] In the present embodiment, the flow distribution node 33 is arranged at any position of the refrigerant heat exchange component 30 outside the joint component 32. The joint component 32 guides the heat exchange medium into the flow guide channel 36 through the guide inlet 321, and the heat exchange medium is guided into the flow distribution node 33 through the flow guide channel 36, and then is distributed to the first heat exchange channel 311 and the second heat exchange channel 312 for heat exchange operation.

[0111] The flow guide channel 36 refers to a flow channel structure formed in the inner part of the refrigerant heat exchange component 30, and the heat exchange medium can flow in the flow channel structure. Optionally, the number of flow guide channels 36 can be one, two or any multiple; for example, when the number of flow guide channels 36 is one, the heat exchange medium guided by the guide inlet 321 is guided to the flow distribution node 33 through the flow guide channel 36, as shown in Figure 7 When the number of flow guide channels 36 is multiple, for example, two, the number of flow distribution nodes 33 can also be two, and the two flow guide channels 36 and the two flow distribution nodes 33 can be symmetrically arranged about the central axis 301, and the heat exchange medium guided by the guide inlet 321 can be simultaneously guided to the two flow distribution nodes 33 through the two flow guide channels 36, respectively, and then is guided into the first heat exchange channel 311 and the second heat exchange channel 312 by the two flow distribution nodes 33, respectively.

[0112] In this way, the heat exchange medium guided by the guide inlet 321 can be guided to the flow distribution node 33 through the flow guide channel 36, and then is distributed to the first heat exchange channel 311 and the second heat exchange channel 312 by the flow distribution node 33. In this way, the flow distribution node 33 can be arranged at any position of the refrigerant heat exchange component 30, for example, arranged in the heat exchange region 31 or arranged in the region between the heat exchange region 31 and the joint component 32, so as to facilitate different use scenarios of the refrigerant heat exchange component 30.

[0113] Please refer to Figure 3 and Figure 6 In some embodiments, the flow distribution node 33 is located in the heat exchange region 31.

[0114] In the present embodiment, the flow distribution node 33 is located in the heat exchange region 31; for example, the flow distribution node 33 can be located between the first heat exchange channel 311 and the second heat exchange channel 312 and at the middle part of the heat exchange region 31, as shown in Figure 6 Or, the flow distribution node 33 can 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.

[0115] In this way, the heat exchange medium introduced by the introduction port 321 can be directly introduced into the heat exchange region 31 through the flow guide flow channel 36, and then distributed to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 by the distribution node 33 in the heat exchange region 31.

[0116] Please refer to Figure 3 and Figure 8 In some embodiments, the distribution node 33 is located between the heat exchange region 31 and the joint component 32.

[0117] In this embodiment, the distribution node 33 is arranged between the heat exchange region 31 and the joint component 32, as shown in Figure 8 In this way, the introduction port 321 of the joint component 32 can be connected to the distribution node 33 through the flow guide flow channel 36, and then introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the first distribution flow channel 34 and the second distribution flow channel 35, respectively.

[0118] In this way, by arranging the distribution node 33 between the heat exchange region 31 and the joint component 32, the distribution node 33 is closer to the joint component 32, so that the dryness change of the heat exchange medium flowing to the distribution node 33 can be reduced, the influence of the dryness of the heat exchange medium on the distribution is reduced, and the uniformity of the distribution is improved.

[0119] Please refer to Figure 3 and Figure 6 or and Figure 8 In some embodiments, the number of the first heat exchange flow channel 311 and the second heat exchange flow channel 312 is multiple; the first distribution flow channel 34 includes a first main distribution flow channel 341 and a plurality of first branch distribution flow channels 342, the first main distribution flow channel 341 is connected to the distribution node 33, the plurality of first branch distribution flow channels 342 are sequentially and intermittently connected to the first main distribution flow channel 341, and the plurality of first branch distribution flow channels 342 are respectively connected to the first heat exchange flow channel 311; the second distribution flow channel 35 includes a second main distribution flow channel 351 and a plurality of second branch distribution flow channels 352, the second main distribution flow channel 351 is connected to the distribution node 33, the plurality of second branch distribution flow channels 352 are sequentially and intermittently connected to the second main distribution flow channel 351, and the plurality of second branch distribution flow channels 352 are respectively connected to the second heat exchange flow channel 312.

[0120] The first distribution flow channel 34 includes a first main distribution flow channel 341 and a plurality of first branch distribution flow channels 342; in this way, the distribution node 33 can introduce the heat exchange medium into the first main distribution flow channel 341, and then distribute the heat exchange medium to the plurality of first branch distribution flow channels 342 through the first main distribution flow channel 341, so that the plurality of first branch distribution flow channels 342 can synchronously introduce the heat exchange medium into the corresponding first heat exchange flow channel 311, thereby synchronously introducing the heat exchange medium into the plurality of first heat exchange flow channels 311 to realize heat exchange.

[0121] Optionally, the number of the first branch flow channels 342 can be two, three or any multiple of three; the number of the first heat exchange flow channels 311 can be two, three or any multiple of three. The number of the first branch flow channels 342 and the number of the first heat exchange flow channels 311 can be the same, and the multiple first branch flow channels 342 are respectively connected to the corresponding first heat exchange flow channels 311.

[0122] The second flow distribution channel 35 includes a second main flow distribution channel 351 and multiple second branch flow channels 352. Thus, the flow distribution node 33 can guide the heat exchange medium into the second main flow distribution channel 351, and then the second main flow distribution channel 351 can distribute the heat exchange medium to the multiple second branch flow channels 352, so that the multiple second branch flow channels 352 can guide the heat exchange medium into the corresponding second heat exchange flow channels 312 at the same time, thereby synchronously passing the heat exchange medium into the multiple second heat exchange flow channels 312 to realize heat exchange.

[0123] Optionally, the number of the second branch flow channels 352 can be two, three or any multiple of three; the number of the second heat exchange flow channels 312 can be two, three or any multiple of three. The number of the second branch flow channels 352 and the number of the second heat exchange flow channels 312 can be the same, and the multiple second branch flow channels 352 are respectively connected to the corresponding second heat exchange flow channels 312.

[0124] The multiple first heat exchange flow channels 311 and the multiple second heat exchange flow channels 312 can be symmetrically distributed about the central axis 301; the first main flow distribution channel 341 and the second main flow distribution channel 351 can also be approximately symmetrically distributed about the central axis 301, and at least part of the multiple first branch flow channels 342 and at least part of the multiple second branch flow channels 352 can also be approximately symmetrically distributed about the central axis 301.

[0125] In this way, the flow distribution node 33 can distribute the heat exchange medium to the first main flow distribution channel 341 and the second main flow distribution channel 351, and then the multiple first branch flow channels 342 can distribute the heat exchange medium to the multiple first heat exchange flow channels 311, and the multiple second branch flow channels 352 can distribute the heat exchange medium to the multiple second heat exchange flow channels 312.

[0126] Please refer to Figure 3 and Figure 6 In some embodiments, the multiple first branch flow channels 342 and the multiple second branch flow channels 352 are symmetrically arranged about the central axis 301.

[0127] Optionally, the portions of the plurality of first branch flow channels 342 and the portions of the plurality of second branch flow channels 352 are symmetrically arranged about the central axis 301. Illustratively, when the number of the first branch flow channels 342 and the second branch flow channels 352 is three respectively, 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, and the other of the first branch flow channels 342 and the other of the second branch flow channels 352 are asymmetrically arranged.

[0128] 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. Illustratively, when the number of the first branch flow channels 342 and the second branch flow channels 352 is three respectively, three of the first branch flow channels 342 and three of the second branch flow channels 352 are symmetrically arranged about the central axis 301.

[0129] In this way, the symmetrically arranged first branch flow channels 342 and second branch flow channels 352 can further improve the uniformity of the distribution of the heat exchange medium.

[0130] Please refer to Figure 3 and Figure 6 In some embodiments, the first main flow channel 341 and the second main flow channel 351 are symmetrically arranged about the central axis 301.

[0131] In this way, when the flow channel distributes the heat exchange medium to the first main flow channel 341 and the second main flow channel 351, the symmetrically arranged first main flow channel 341 and second main flow channel 351 can improve the uniformity of the heat exchange medium entering the first main flow channel 341 and the second main flow channel 351, thereby further improving the uniformity of the distribution of the heat exchange medium.

[0132] Please refer to Figure 3 and Figure 9 In some embodiments, the distribution node (in the present embodiment, the distribution node is not visible because it is inside the joint) is arranged inside the joint component 32, the inside of the joint component 32 is further provided with a plurality of distribution ports (not shown in the figure), the guide inlet 321 is communicated with the plurality of distribution ports through the distribution node; the inside of the refrigerant heat exchange component 30 is further provided with a first flow guide channel 37, one end of the first flow guide channel 37 is communicated with a corresponding distribution port, the other end of the first flow guide channel 37 is communicated with the first heat exchange channel 311 and the second heat exchange channel 312; and / or, the inside of the refrigerant heat exchange component 30 is further provided with a second flow guide channel 38 and a third flow guide channel 39, the second flow guide channel 38 is respectively communicated to the first heat exchange channel 311 and a corresponding distribution port, and the third flow guide channel 39 is respectively communicated to the second heat exchange channel 312 and a corresponding distribution port.

[0133] In this embodiment, the flow splitting node is arranged inside the joint component 32; in this way, the heat exchange medium introduced by the introduction port 321 can be split at the flow splitting node inside the joint component 32, and the heat exchange medium is split into multiple strands and introduced into the multiple flow splitting ports respectively.

[0134] The inside of the refrigerant heat exchange component 30 can be provided with a first flow guide channel 37. It should be understood that the first flow guide channel 37 refers to a flow channel structure formed inside the refrigerant heat exchange component 30, and the heat exchange medium can flow inside the flow channel structure. The number of the first flow guide channel 37 can be multiple, for example, consistent with the number of flow splitting ports; in this way, the multiple flow splitting ports respectively introduce the heat exchange medium into the corresponding first flow guide channel 37, and then the first flow guide channel 37 synchronously introduces the heat exchange medium into the first heat exchange channel 311 and the second heat exchange channel 312 connected thereto, as shown in Figure 9 .

[0135] Alternatively, the first flow guide channel 37 can be composed of one main flow channel structure and at least two branch flow channel structures arranged on the main flow channel structure, the flow splitting port is connected to the main flow channel structure, and the at least two branch flow channel structures are respectively connected to the first heat exchange channel 311 or the second heat exchange channel 312. Alternatively, the first flow guide channel 37 can be composed of at least two branch flow channel structures, one end of the at least two branch flow channel structures is formed at the corresponding flow splitting port, and the other end of the at least two branch flow channel structures is respectively connected to the first heat exchange channel 311 or the second heat exchange channel 312.

[0136] And / or, the inside of the refrigerant heat exchange component 30 can be provided with a second flow guide channel 38 and a third flow guide channel 39, as shown in Figure 9 It should be understood that the second flow guide channel 38 and the third flow guide channel 39 refer to flow channel structures formed inside the refrigerant heat exchange component 30, and the heat exchange medium can flow inside the flow channel structure. The number of the second flow guide channel 38 can be one, two or any multiple of more than two; the number of the third flow guide channel 39 can be two, three or any multiple of more than three; wherein the number of the second flow guide channel 38 can be consistent with the number of the third flow guide channel 39. In this way, the opposite ends of the second flow guide channel 38 are respectively connected to the corresponding one flow splitting port and the first heat exchange channel 311, and the opposite ends of the third flow guide channel 39 are respectively connected to the corresponding one flow splitting port and the second heat exchange channel 312.

[0137] In this way, the heat exchange medium introduced by the inlet 321 can be distributed to the multiple distribution ports by the distribution node arranged inside the joint component 32, and then introduced into the first guide flow channel 37 by the distribution ports, and then introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 by the first guide flow channel 37, and / or introduced into the second guide flow channel 38 and the third guide flow channel 39 by the multiple distribution ports, and then introduced into the first heat exchange flow channel 311 by the second guide flow channel 38, and introduced into the second heat exchange flow channel 312 by the third guide flow channel 39.

[0138] Please refer to Figure 3 and Figure 9 In some embodiments, the first guide flow channel 37 includes a first sub-guide flow channel 371 and a second sub-guide flow channel 372, one end of the first sub-guide flow channel 371 and the second sub-guide flow channel 372 intersecting and communicating with the distribution port, the other end of the first sub-guide flow channel 371 communicating with the first heat exchange flow channel 311, and the other end of the second sub-guide flow channel 372 communicating with the second heat exchange flow channel 312.

[0139] The first sub-guide flow channel 371 and the second sub-guide flow channel 372 respectively refer to two independent flow channel structures. One end of the first sub-guide flow channel 371 and the second sub-guide flow channel 372 intersect and communicate with the distribution port, so that the heat exchange medium discharged by the distribution port can be distributed to the first sub-guide flow channel 371 and the second sub-guide flow channel 372, and then distributed to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the first sub-guide flow channel 371 and the second sub-guide flow channel 372.

[0140] In this way, the first guide flow channel 37 can include one first sub-guide flow channel 371 and one second sub-guide flow channel 372; or the first guide flow channel 37 can include two or more first sub-guide flow channels 371 and a corresponding number of second sub-guide flow channels 372, one end of the multiple first sub-guide flow channels 371 and the multiple second sub-guide flow channels 372 intersecting and communicating with the distribution port.

[0141] In this way, the distribution port can introduce the distributed heat exchange medium into the intersection of the first sub-guide flow channel 371 and the second sub-guide flow channel 372, and then introduce the heat exchange medium into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 by the first sub-guide flow channel 371 and the second sub-guide flow channel 372 respectively to realize the heat exchange and cooling operation.

[0142] Please refer to Figure 3 and Figure 9 In some embodiments, the first sub-guide flow channel 371 and the second sub-guide flow channel 372 are symmetrically arranged about the central axis 301.

[0143] In this way, when the flow distribution port introduces the heat exchange medium, the heat exchange medium can be more evenly distributed to the symmetrically arranged first sub-flow channel 371 and the second sub-flow channel 372, so that the first sub-flow channel 371 and the second sub-flow channel 372 can more evenly introduce the heat exchange medium to the first heat exchange channel 311 and the second heat exchange channel 312.

[0144] Please refer to Figure 3 and Figure 9 In some embodiments, the second flow channel 38 includes a plurality of third sub-flow channels 381, one end of the plurality of third sub-flow channels 381 intersects and communicates with the flow distribution port, and the other end of the plurality of third sub-flow channels 381 respectively communicates with the plurality of first heat exchange channels 311; the third flow channel 39 includes a plurality of fourth sub-flow channels 391, one end of the plurality of fourth sub-flow channels 391 intersects and communicates with the flow distribution port, and the other end of the plurality of fourth sub-flow channels 391 respectively communicates with the plurality of second heat exchange channels 312.

[0145] 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 two, three or any multiple of more than three. One end of the plurality of third sub-flow channels 381 intersects and communicates with the flow distribution port, so that the heat exchange medium introduced by the flow distribution port can be distributed to the plurality of third sub-flow channels 381, and then distributed to the plurality of first heat exchange channels 311 through the plurality of third sub-flow channels 381.

[0146] 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 two, three or any multiple of more than three. One end of the plurality of fourth sub-flow channels 391 intersects and communicates with the flow distribution port, so that the heat exchange medium introduced by the flow distribution port can be distributed to the plurality of fourth sub-flow channels 391, and then distributed to the plurality of second heat exchange channels 312 through the plurality of fourth sub-flow channels 391.

[0147] In this way, part of the flow distribution port introduces the distributed heat exchange medium to the intersection of the plurality of third sub-flow channels 381, and then introduces the heat exchange medium to the plurality of first heat exchange channels 311 through the plurality of third sub-flow channels 381; at the same time, another part of the flow distribution port introduces the distributed heat exchange medium to the intersection of the plurality of fourth sub-flow channels 391, and then introduces the heat exchange medium to the plurality of second heat exchange channels 312 through the plurality of fourth sub-flow channels 391.

[0148] Please refer to Figure 3 and Figure 9 In some embodiments, the second flow channel 38 and the third flow channel 39 are symmetrically arranged about the central axis 301.

[0149] In this way, when the shunt port introduces the heat exchange medium, the heat exchange medium can be more evenly distributed to the symmetrically arranged second flow guide channel 38 and third flow guide channel 39, so that the second flow guide channel 38 and the third flow guide channel 39 can more evenly introduce the heat exchange medium to the first heat exchange channel 311 and the second heat exchange channel 312.

[0150] Please refer to Figures 3 to 5 In some embodiments, the guide port 321 is used to introduce the phase change material medium into the first heat exchange channel 311 and the second heat exchange channel 312.

[0151] 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, alkane, ammonia, carbon dioxide, difluoromethane, tetrafluoroethane, etc. The phase change material medium is used to absorb heat by gasification and phase change in the first heat exchange channel 311 and the second heat exchange channel 312 of the cooling medium heat exchange component 30, thereby achieving the effect of high-efficiency cooling of the battery device 100.

[0152] In this way, the phase change material medium is introduced into the first heat exchange channel 311 and the second heat exchange channel 312 through the guide port 321, and the phase change material medium absorbs heat by phase change in the heat exchange channel to achieve high-efficiency cooling.

[0153] In the following, the battery device 100 provided by the present application will be further introduced according to specific embodiments.

[0154] Please refer to Figures 2 to 9 In this embodiment, the battery device 100 includes a battery monomer assembly 210 and a cooling medium heat exchange component 30, the cooling medium heat exchange component 30 is configured to exchange heat with the battery monomer assembly 210; the cooling medium heat exchange component 30 has a first heat exchange channel 311 and a second heat exchange channel 312 inside, the cooling medium heat exchange component 30 forms a heat exchange area 31 corresponding to the first heat exchange channel 311 and the second heat exchange channel 312, the heat exchange area 31 is arranged close to or in contact with the battery monomer assembly 210; the first heat exchange channel 311 and the second heat exchange channel 312 form a central axis 301 therebetween, and the first heat exchange channel 311 and the second heat exchange channel 312 are symmetrically arranged about the central axis 301.

[0155] The joint part 32 is provided on the refrigerant heat exchange part 30, and the joint part 32 is internally provided with a guide inlet 321 and a guide outlet 322. In some embodiments, the internal part of the joint part 32 can form a flow distribution node 33, and the guide inlet 321 is communicated with a plurality of flow distribution ports through the flow distribution node 33; and the joint part 32 is arranged on the central axis 301. The internal part of the refrigerant heat exchange part 30 is further provided with a first flow guide channel 37, one end of the first flow guide channel 37 is communicated with a corresponding flow distribution port, and the other end of the first flow guide channel 37 is communicated with the first heat exchange channel 311 and the second heat exchange channel 312; and / or, the internal part of the refrigerant heat exchange part 30 is further provided with a second flow guide channel 38 and a third flow guide channel 39, the second flow guide channel 38 is respectively communicated with the first heat exchange channel 311 and a corresponding flow distribution port, and the third flow guide channel 39 is respectively communicated with the second heat exchange channel 312 and a corresponding flow distribution port.

[0156] In another embodiment, the flow distribution node 33 can be formed in the internal part of the refrigerant heat exchange part 30, and the guide inlet 321 is communicated with the first heat exchange channel 311 and the second heat exchange channel 312 through the flow distribution node 33, and the guide outlet 322 is communicated with the first heat exchange channel 311 and the second heat exchange channel 312; wherein the flow distribution node 33 is located on the central axis 301 or adjacent to the central axis 301. In this embodiment, the joint part 32 can be arranged away from the central axis 301, as shown in Figure 7 the guide inlet 321 of the joint part 32 can be communicated with the flow distribution node 33 located on the central axis 301 through the flow guide channel 36. Alternatively, the joint part 32 can also be arranged on the central axis 301. In this embodiment, the flow distribution node 33 can be arranged at the joint part 32 and opposite to the guide inlet 321; or the flow distribution node 33 can be arranged in the region between the joint part 32 and the heat exchange region 31; or the flow distribution node 33 can also be arranged in the heat exchange region 31.

[0157] Please refer to Figures 3 to 5The embodiment of the present application further provides a refrigerant heat exchange component 30, the refrigerant heat exchange component 30 has a first heat exchange flow channel 311 and a second heat exchange flow channel 312 inside, and a heat exchange region 31 is formed on the refrigerant heat exchange component 30 corresponding to the first heat exchange flow channel 311 and the second heat exchange flow channel 312; a central axis 301 is formed between the first heat exchange flow channel 311 and the second heat exchange flow channel 312, and the first heat exchange flow channel 311 and the second heat exchange flow channel 312 are symmetrically arranged about the central axis 301; a joint component 32 is arranged on the refrigerant heat exchange component 30, and a guide inlet 321 and a guide outlet 322 are arranged inside the joint component 32; a flow distribution node 33 is formed inside the joint component 32 or the refrigerant heat exchange component 30, the guide inlet 321 is respectively communicated to the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the flow distribution node 33, and the guide outlet 322 is communicated to the first heat exchange flow channel 311 and the second heat exchange flow channel 312; wherein the flow distribution node 33 is located on the central axis 301 or adjacent to the central axis 301.

[0158] The refrigerant heat exchange component 30 provided by the embodiment of the present application is used in the heat exchange region 31, the first heat exchange flow channel 311 and the second heat exchange flow channel 312 are symmetrically arranged about the central axis 301, and the flow distribution node 33 is arranged on the central axis 301 or adjacent to the central axis 301; in this way, in the process that the heat exchange medium introduced by the joint component 32 through the guide inlet 321 is introduced into the first heat exchange flow channel 311 and the second heat exchange flow channel 312 through the flow distribution node 33, since the flow distribution node 33 is close to the central axis 301, the flow distribution node 33 can more uniformly distribute the heat exchange medium to the first heat exchange flow channel 311 and the second heat exchange flow channel 312, so that the flow of the heat exchange medium in the symmetric first heat exchange flow channel 311 and the second heat exchange flow channel 312 is more balanced, thereby effectively reducing the temperature difference of the heat exchange region 31 caused by uneven distribution, and improving the temperature uniformity of the heat exchange region 31.

[0159] Please refer to Figures 1 to 3 The embodiment of the present application further provides a power utilization device, which comprises the battery device 100 or the refrigerant heat exchange component 30, and the battery device 100 is used for providing electric energy.

[0160] The power utilization device provided by the embodiment of the present application, for example, the vehicle 1000, comprises the battery device 100 or the refrigerant heat exchange component 30, and on the basis of the better heat dissipation effect of the refrigerant heat exchange component 30 or the battery device 100, the use performance and service life of the power utilization device are effectively improved.

[0161] The above merely describes the preferred embodiment of the present application, but should not be used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery device, characterized by: The battery cell assembly comprises: A refrigerant heat exchange component configured to exchange heat with the battery cell assembly, the refrigerant heat exchange component having a first heat exchange flow channel and a second heat exchange flow channel inside, a heat exchange region being formed on the refrigerant heat exchange component corresponding to the first heat exchange flow channel and the second heat exchange flow channel, the heat exchange region being arranged close to or in contact with the battery cell assembly; the first heat exchange flow channel and the second heat exchange flow channel are arranged symmetrically about a central axis formed between the first heat exchange flow channel and the second heat exchange flow channel; A joint component is arranged on the refrigerant heat exchange component, the joint component having a guide inlet and a guide outlet inside; a split node is formed inside the joint component or the refrigerant heat exchange component, the guide inlet being connected to the first heat exchange flow channel and the second heat exchange flow channel through the split node, and the guide outlet being connected to the first heat exchange flow channel and the second heat exchange flow channel; Wherein, the split node is located on the central axis or adjacent to the central axis. The distance between the split node and the central axis is m, wherein 0≤m≤50mm.

2. The battery device of claim 1, wherein: The split node is arranged inside the refrigerant heat exchange component, and the refrigerant heat exchange component further has a first split flow channel and a second split flow channel inside, the split node being connected to the first heat exchange flow channel through the first split flow channel, and the split node being connected to the second heat exchange flow channel through the second split flow channel.

3. The battery device according to claim 1 or 2, characterized by: The guide inlet is directly opposite to the split node.

4. The battery device of claim 3, wherein: The refrigerant heat exchange component further has a guide flow channel inside, one end of the guide flow channel being connected to the guide inlet, and the other end of the guide flow channel being connected to the split node.

5. The battery device of claim 3, wherein: The split node is located in the heat exchange region.

6. The battery device of claim 5, wherein: The split node is located between the heat exchange region and the joint component.

7. The battery device of claim 5, wherein: The number of the first heat exchange flow channel and the second heat exchange flow channel is multiple; the first split flow channel comprises a first main split flow channel and a plurality of first branch split flow channels, the first main split flow channel being connected to the split node, the plurality of first branch split flow channels being connected to the first main split flow channel in sequence, and the plurality of first branch split flow channels being connected to the first heat exchange flow channel respectively; 8. The battery device according to any one of claims 3 to 7, characterized by: The second split flow channel comprises a second main split flow channel and a plurality of second branch split flow channels, the second main split flow channel being connected to the split node, the plurality of second branch split flow channels being connected to the second main split flow channel in sequence, and the plurality of second branch split flow channels being connected to the second heat exchange flow channel respectively. The plurality of first branch split flow channels and the plurality of second branch split flow channels are arranged symmetrically about the central axis.

9. The battery device of claim 8, wherein: The first main split flow channel and the second main split flow channel are arranged symmetrically about the central axis.

10. The battery device according to claim 8 or 9, characterized by: The split node is arranged inside the joint component, and the joint component further has a plurality of split ports inside, the guide inlet being connected to the plurality of split ports through the split node; 11. The battery device according to claim 1 or 2, characterized by: ​ The interior of the refrigerant heat exchange component is further provided with a first flow guide channel, one end of the first flow guide channel is communicated with the corresponding split port, and the other end of the first flow guide channel is communicated with the first heat exchange channel and the second heat exchange channel. And / or, the interior of the refrigerant heat exchange component is further provided with a second flow guide channel and a third flow guide channel, the second flow guide channel is respectively communicated to the first heat exchange channel and the corresponding split port, and the third flow guide channel is respectively communicated to the second heat exchange channel and the corresponding split port.

12. The battery device of claim 11, wherein: The first flow guide channel includes a first sub-flow guide channel and a second sub-flow guide channel, one end of the first sub-flow guide channel and the second sub-flow guide channel is intersected and communicated with the split port, the other end of the first sub-flow guide channel is communicated with the first heat exchange channel, and the other end of the second sub-flow guide channel is communicated with the second heat exchange channel.

13. The battery device of claim 12, wherein: The first sub-flow guide channel and the second sub-flow guide channel are symmetrically arranged about the central axis.

14. The battery device according to any one of claims 11 to 13, characterized by: The second flow guide channel includes a plurality of third sub-flow guide channels, one end of the plurality of third sub-flow guide channels is intersected and communicated with the split port, and the other end of the plurality of third sub-flow guide channels is respectively communicated with a plurality of first heat exchange channels; the third flow guide channel includes a plurality of fourth sub-flow guide channels, one end of the plurality of fourth sub-flow guide channels is intersected and communicated with the split port, and the other end of the plurality of fourth sub-flow guide channels is respectively communicated with a plurality of second heat exchange channels.

15. The battery device according to any one of claims 11 to 14, characterized by: The second flow guide channel and the third flow guide channel are symmetrically arranged about the central axis.

16. The battery device according to any one of claims 1 to 15, characterized by: 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 by: The interior of the refrigerant heat exchange component has a first heat exchange channel and a second heat exchange channel, and 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; 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 joint component, the interior of the joint component is provided with an inlet and an outlet; a split node is formed in the interior of the joint component or the interior of the refrigerant heat exchange component, the inlet is respectively communicated to the first heat exchange channel and the second heat exchange channel through the split node, and the outlet is communicated with the first heat exchange channel and the second heat exchange channel; The split node is located on the central axis or adjacent to the central axis.

18. A battery device, characterized by: The battery device for providing electric energy includes the battery device as claimed in any one of claims 1 to 16 or the refrigerant heat exchange component as claimed in claim 17.

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