Battery device, refrigerant heat exchange device and electric device

Abstract

The utility model belongs to the technical field of battery production, and provides a battery device, a refrigerant heat exchange device and a power utilization device.The battery device comprises a battery single body assembly, a refrigerant heat exchange component and a connector assembly, the refrigerant heat exchange component is provided with a heat exchange face, the heat exchange face is close to or makes contact with a battery single body, and the heat exchange face is provided with a symmetry axis; heat exchange runners are arranged in the refrigerant heat exchange component and are symmetrically arranged about the symmetry axis, runner inlets communicating with the heat exchange runners are formed in the heat exchange surface, and the runner inlets are symmetrical about the symmetry axis; the connector assembly comprises a connector part and a first flow guide part communicating with the connector part, the connector part is connected to the refrigerant heat exchange part and deviates from the symmetry axis, and the connector part is connected with the refrigerant heat exchange part through the first flow guide part and communicates with the flow channel inlet; the joint assembly is arranged to avoid the battery cell assembly. The distribution uniformity of the refrigerant heat exchange component is improved, so that the temperature equalization performance of the refrigerant heat exchange component is improved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202420907842.4, filed with the State Intellectual Property Office of China on April 28, 2024, entitled "Heat Exchanger, Battery and Electrical Device", the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] During the charging and discharging process, the battery devices in new energy vehicles release a lot of heat. The battery devices are usually equipped with refrigerant heat exchange components to exchange heat with the individual battery cells.

[0004] In related technologies, refrigerant heat exchange components suffer from poor temperature uniformity, which leads to uneven heat exchange to individual battery cells, thereby affecting the performance and lifespan of the battery device. Utility Model Content

[0005] The purpose of this application is to provide a battery device, a refrigerant heat exchange device, and an electrical device, which aims to solve the technical problem of poor temperature uniformity of the refrigerant heat exchange components in the battery device.

[0006] The technical solution adopted in the embodiments of this application is:

[0007] In a first aspect, this application provides a battery device, comprising:

[0008] Battery cell assembly;

[0009] The refrigerant heat exchange component has a heat exchange surface that is close to or in contact with the battery cell. The heat exchange surface has a symmetrical axis. The refrigerant heat exchange component has heat exchange channels inside, which are symmetrically arranged on both sides of the symmetrical axis. The heat exchange surface has a channel inlet that communicates with the heat exchange channels. The channel inlet is configured to be symmetrical about the symmetrical axis.

[0010] The connector assembly includes a connector component and a first flow guiding component connected to the connector component. The connector component is connected to the refrigerant heat exchange component and is arranged off-axis. The connector component is connected to the refrigerant heat exchange component through the first flow guiding component and is connected to the flow channel inlet. The connector assembly is arranged to avoid the arrangement of battery cell components.

[0011] In this embodiment, the connector component is installed in an offset manner on the refrigerant heat exchange component, and the heat exchange channels are arranged symmetrically. The channel inlet is configured symmetrically about the axis of symmetry. By adding a first flow guiding component, the heat exchange fluid can be transported from the connector component to the channel inlet and symmetrically and evenly distributed into the heat exchange channel, achieving uniform distribution. This makes the temperature distribution on the refrigerant heat exchange component and the heat exchange surface more uniform, which is beneficial to improving the temperature uniformity performance of the refrigerant heat exchange component and thus improving the ability of the refrigerant heat exchange component to evenly heat the battery cell assembly.

[0012] In one embodiment, the connector assembly further includes a first manifold component connected between the refrigerant heat exchange component and the first flow guide component for connecting the first flow guide component to the flow channel inlet.

[0013] In this embodiment, by adding a first flow collecting component, it is convenient to connect and communicate with the first flow guiding component and the flow channel inlet. The first flow collecting component plays the role of guiding, directing, and changing the flow direction of the heat exchange fluid.

[0014] In one embodiment, the first flow collecting component has a flow collecting channel inside, which includes a flow collecting inlet section and two flow collecting outlet sections, both of which are connected to the flow collecting inlet section. The flow collecting inlet section or at the position where the flow collecting inlet section and the flow collecting outlet section are connected has a flow equalization channel wall, which is arranged to meet the flow exchange fluid. The two flow collecting outlet sections are respectively arranged on the front and rear sides of the flow equalization channel wall, and the end of the flow equalization channel wall near the flow collecting outlet section is inclined towards the flow collecting outlet section near the front side. The flow collecting inlet section is connected to the first flow guiding component, and both flow collecting outlet sections are connected to the flow channel inlet.

[0015] In this embodiment, the flow collection channel is divided into a flow collection inlet section and two flow collection outlet sections, and a flow equalization channel wall is set in the flow collection channel. By tilting the end of the flow equalization channel wall near the flow collection outlet section closer to the front flow collection outlet section, the heat exchange fluid can flow relatively more towards the front flow collection outlet section, so that the heat exchange fluid can flow more evenly to the two flow collection outlet sections, thereby achieving uniform flow distribution.

[0016] In one embodiment, the inclination angle of the flow equalization channel wall is greater than 0° and less than 90°.

[0017] In this embodiment, by designing different inclination angles of the flow equalization channel wall, adjustments can be made according to the different positional relationships and dimensions between the flow collection inlet section and the flow collection outlet section, thereby improving the flexibility of the flow collection channel layout.

[0018] In one embodiment, a first flow guiding channel is formed inside the first flow guiding component, and one or more first protrusion structures are provided on the channel wall of the first flow guiding channel.

[0019] In this embodiment, the first protrusion structure can bypass the heat exchange fluid in the first flow channel, thereby making the gas-liquid heat exchange fluid mix more evenly and reducing the impact of heat exchange fluid stratification caused by gravity, so as to improve the uniformity of the flow distribution.

[0020] In one embodiment, the first flow channel has a first central axis, and the first protrusion extends along the length of the first flow channel and is inclined relative to the first central axis.

[0021] In this embodiment, the first protrusion structure is tilted, which can enhance the disturbance effect on the heat exchange fluid, improve the uniformity of gas-liquid mixing, and facilitate uniform flow distribution.

[0022] In one embodiment, the first flow channel has a first central axis, and the first protrusion structure extends spirally around the first central axis.

[0023] In this embodiment, the first protrusion structure is arranged in a spiral shape to further enhance the turbulence effect and make the gas-liquid mixture more uniform.

[0024] In one embodiment, the connector assembly further includes a first insulation structure that wraps around the outer surface of the first flow guide component.

[0025] In this embodiment, by wrapping the outer surface of the first flow guide component with a first heat insulation structure, it is beneficial to reduce the energy loss of the heat exchange fluid and reduce the risk of condensation of water vapor and other substances in the heat exchange fluid, thereby protecting the first flow guide component.

[0026] In one embodiment, the first guide component extends along a preset direction, and the preset direction is set at a preset angle with the direction of the axis of symmetry. The preset angle is greater than 0° and less than or equal to 90°.

[0027] In this embodiment, the size of the preset angle can be specifically set according to the position of the battery cell assembly to avoid the first flow guiding component from interfering with the battery cell assembly. The first flow guiding component is set at a preset angle with the axis of symmetry, which is simple in structure and easy to manufacture and install.

[0028] In one embodiment, the connector assembly further includes a second flow guiding component connected to the connector component, and a flow channel outlet connected to the heat exchange channel is provided on the heat exchange surface. The second flow guiding component is connected to the refrigerant heat exchange component and is connected to the flow channel outlet.

[0029] In this embodiment, the second flow guiding component plays a connecting and communicating role between the refrigerant heat exchange component and the connector component. By setting the second flow guiding component, the heat exchange fluid flowing out of the refrigerant heat exchange component can flow to the connector component, which facilitates the connection between the external conveying device and the connector component to realize the input and output of the heat exchange fluid.

[0030] In one embodiment, a second flow guiding channel is formed inside the second flow guiding component, and one or more second protrusion structures are provided on the channel wall of the second flow guiding channel.

[0031] In this embodiment, the second protrusion structure can bypass the heat exchange fluid in the second flow channel, thereby making the gas-liquid heat exchange fluid mix more evenly and reducing the impact of heat exchange fluid stratification caused by gravity.

[0032] In one embodiment, the second flow channel has a second central axis, and the second protrusion extends along the length of the second flow channel and is inclined relative to the second central axis.

[0033] In this embodiment, the second protrusion structure is tilted to enhance the disturbance effect on the heat exchange fluid and improve the uniformity of gas-liquid mixing.

[0034] In one embodiment, the second protrusion structure is spirally extended around the second central axis.

[0035] In this embodiment, the second protrusion structure is arranged in a spiral shape to further enhance the turbulence effect and make the gas-liquid mixture more uniform.

[0036] In one embodiment, the connector assembly further includes a second insulation structure that wraps around the outer surface of the second flow guide component.

[0037] In this embodiment, by wrapping the outer surface of the second flow guide component with a second heat insulation structure, it is beneficial to reduce the energy loss of the heat exchange fluid and reduce the risk of condensation of water vapor and other substances in the heat exchange fluid, thereby protecting the second flow guide component.

[0038] In one embodiment, the connector assembly further includes a second manifold component connected between the refrigerant heat exchange component and the second flow guide component for connecting the second flow guide component to the flow channel outlet.

[0039] In this embodiment, by adding a second flow collecting component, it is convenient to connect and communicate with the second flow guiding component and the flow channel outlet. The second flow collecting component plays the role of guiding, directing, and changing the flow direction of the heat exchange fluid.

[0040] In one embodiment, the battery device further includes a housing with a accommodating space, in which a battery cell assembly is housed, and a refrigerant heat exchange component is located within the accommodating space and disposed on the bottom of the housing to support the battery cell assembly.

[0041] In this embodiment, the refrigerant heat exchange component is placed on the bottom of the housing, thereby achieving bottom heat exchange of the battery cell assembly. The large heat exchange area is beneficial to improving heat exchange efficiency.

[0042] In one embodiment, the battery device further includes a housing body, a refrigerant heat exchange component connected to the housing body and together with the housing body forming an accommodating space, a battery cell assembly housed within the accommodating space, and the refrigerant heat exchange component being able to support the battery cell assembly.

[0043] In this embodiment, the refrigerant heat exchange component can be connected to the box body and can form the box bottom plate, so that it can exchange heat with the battery cell assembly while also supporting the battery cell assembly, which helps to simplify the structure of the external box body and reduce the weight of the battery device.

[0044] In one embodiment, the heat exchange surface has an edge region along the direction of the axis of symmetry, and the connector assembly is disposed in the edge region.

[0045] In this embodiment, each component in the connector assembly is located on the edge area of ​​the heat exchange surface, which helps the connector assembly to avoid the battery cell assembly, thereby relatively increasing the heat exchange area between the heat exchange surface and the battery cell assembly, thus ensuring the heat exchange efficiency of the refrigerant heat exchange component.

[0046] Secondly, this application provides a refrigerant heat exchange device, which includes a refrigerant heat exchange component and a connector assembly as described in any of the above-mentioned battery devices.

[0047] Thirdly, this application provides an electrical device, including a battery device as described in any of the above, the battery device being used to store or provide electrical energy.

[0048] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0051] Figure 2 Schematic diagram of the exploded structure of the battery device provided in some embodiments of this application Figure 1 ;

[0052] Figure 3 Schematic diagram of the exploded structure of the battery device provided in some embodiments of this application Figure 2 ;

[0053] Figure 4 An exploded view of the connection between the refrigerant heat exchange component and the battery cell assembly in some embodiments of this application;

[0054] Figure 5 An exploded view showing the connection between the refrigerant heat exchange component and the connector assembly in a battery device provided in some embodiments of this application;

[0055] Figure 6 This is a schematic diagram of the connector assembly in a battery device provided in some embodiments of this application;

[0056] Figure 7 for Figure 6 BB section view in the middle;

[0057] Figure 8 for Figure 7 A magnified view of the area at position C in the middle;

[0058] Figure 9 for Figure 6 AA section view in the middle;

[0059] Figure 10 for Figure 9 A magnified view of a portion of the area at position D;

[0060] Figure 11 This is an exploded structural diagram of the connector assembly in a battery device provided in some embodiments of this application.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1000, Vehicle; 1100, Battery Unit; 1110, Battery Cell Assembly; 1120, Housing; 1121, First Part; 1122, Second Part; 11221, Frame; 11222, Bottom of Housing; 1113, Accommodation Space; 1130, Housing Body; 1131, Cover; 1132, Housing Frame; 1140, Refrigerant Heat Exchange Component; 1141, First Sub-component; 1142, Second Sub-component; 1143, Heat Exchange Surface; 1144, Heat Exchange Channel; 11441, Channel Inlet; 11442, Channel Outlet; 11443, First Sub-channel; 11444, Second Sub-channel; 1145, Axis of Symmetry; 1146, Edge Region; 1150 1151. Connector assembly; 1152. First flow guiding component; 11521. First flow guiding channel; 11522. First protruding structure; 1153. First flow collecting component; 11531. Flow collecting channel; 11532. Flow collecting inlet section; 11533. Flow collecting outlet section; 11534. Flow equalization channel wall; 1154. Second flow guiding component; 11541. Second flow guiding channel; 11542. Second protruding structure; 1155. Second flow collecting component; 1156. First insulation structure; 1157. Second insulation structure; 1200. Controller; 1300. Motor; a. Inclination angle; β. Preset included angle; X. Preset direction; Y. Direction of the axis of symmetry. Detailed Implementation

[0063] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0065] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0066] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0067] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0068] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0069] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0070] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0071] In recent years, new energy vehicles have experienced rapid development, and their market share is increasing. The urgent problem to be solved in the new energy vehicle industry is to quickly and efficiently achieve energy replenishment.

[0072] During the charging and discharging process, the battery devices in new energy vehicles release a lot of heat. The battery devices are usually equipped with refrigerant heat exchange components that can exchange heat between individual battery cells to achieve heat exchange and cooling.

[0073] In related technologies, refrigerant heat exchange components suffer from poor temperature uniformity, which leads to uneven heat exchange between the refrigerant heat exchange components and individual battery cells, thereby affecting the performance and lifespan of the battery device.

[0074] Especially in the case of fast charging of battery devices, the problems of uneven heat exchange and poor temperature uniformity of the refrigerant heat exchange components on individual battery cells are particularly evident. Fast charging is a mainstream solution for rapid energy replenishment of new energy vehicles, but its implementation faces many challenges. During fast charging, the electrode components generate a large amount of heat. Uneven heat exchange between the refrigerant heat exchange components and individual battery cells leads to a sharp rise in the temperature of some individual battery cells, resulting in a large accumulation of heat inside the battery device. This can easily cause a rapid increase in the internal temperature of the battery device, thereby affecting its performance and lifespan, and even leading to significant potential hazards during use. Therefore, ensuring balanced heat dissipation, rapid heat exchange, and improving the consistency of temperature distribution within the battery device have become bottlenecks in battery thermal management.

[0075] Specifically, battery devices generate heat during charging and discharging. If this heat cannot be effectively dissipated, it may lead to a decline in battery performance and a shortened lifespan. High temperatures can accelerate internal chemical reactions within the battery device, increase internal resistance, reduce energy density, and in severe cases, may cause thermal runaway. Therefore, refrigerant heat exchange components are installed in battery devices to cool the individual battery cells.

[0076] Regarding the technical problems of uneven heat exchange and poor temperature uniformity in refrigerant heat exchange components, research has revealed that there is an uneven flow distribution at the inlet of the refrigerant heat exchange component inside the battery device. This affects the uniform distribution of fluid on the refrigerant heat exchange component. When the refrigerant heat exchange component exchanges heat with the battery cell assembly, it causes uneven heat exchange to different parts of the battery cell assembly, resulting in excessively high local temperatures on the battery cell assembly. This affects the normal use of the battery device and the performance and lifespan of both the battery cell assembly and the battery device.

[0077] Further analysis revealed that a connector assembly is installed on the refrigerant heat exchange component. This assembly connects to the component and communicates with the inlet of the heat exchange channel. The inlet and connector assembly are typically located near the edge of the refrigerant heat exchange component. In some battery devices, to meet structural design requirements, the connector assembly is installed in an offset manner. Offset means the connector assembly is deviated from the axis of symmetry of the heat exchange surface of the refrigerant heat exchange component. Consequently, the inlet is also located off-axis, resulting in an asymmetrical arrangement of the heat exchange channel. This offset inlet and the asymmetrical heat exchange channel lead to uneven flow of the heat exchange fluid, resulting in poor temperature uniformity of the refrigerant heat exchange component.

[0078] Therefore, this application provides a battery device in which the heat exchange channels inside the refrigerant heat exchange component are symmetrically arranged. The inlet of the heat exchange channel is connected to the offset connector component through a first flow guide component, so that the heat exchange fluid can be evenly distributed from the inlet to the symmetrical heat exchange channel to achieve the purpose of uniform distribution. The distribution is balanced and the heat exchange channels are symmetrically arranged, which helps to improve the temperature uniformity performance of the refrigerant heat exchange component, thereby improving the ability of the refrigerant heat exchange component to evenly heat the battery cell assembly.

[0079] Specifically, refer to Figure 2 As shown in the illustration, this application provides a battery apparatus 1100, which may include one or more battery cell assemblies 1110 for providing voltage and capacity. Each battery cell assembly may include multiple battery cells connected in series, parallel, or a combination of these cells via a busbar. The battery apparatus 1100 may also be a battery pack, which generally includes a housing and one or more battery cell assemblies 1110 housed within the housing.

[0080] The battery device 1100 disclosed in this application can be used in electrical devices that use the battery device 1100 as a power source or in various energy storage devices and systems that use the battery device 1100 as an energy storage element. Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0081] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0082] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1100 is provided inside the vehicle 1000, and the battery device 1100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 1100 can be used to power the vehicle 1000; for example, the battery device 1100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1100 to supply power to the motor 1300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0083] In some embodiments of this application, the battery device 1100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0084] Please refer to Figure 2 As shown, Figure 2 This is an exploded structural diagram of a battery device 1100 provided in some embodiments of this application. The battery device 1100 includes a housing 1120 and a battery cell assembly 1110. A receiving space 1113 is formed within the housing 1120, and the battery cell assembly is housed within the receiving space 1113. The battery cell assembly 1110 is typically formed by arranging multiple battery cells. Alternatively, the battery cell assembly 1110 can also be a battery module, which is formed by arranging and fixing multiple battery cells to create an independent module. The housing 1120 provides the receiving space 1113 for the battery cell assembly 1110, and the housing 1120 can adopt various structures.

[0085] A battery cell refers to the smallest unit that makes up the battery device 1100. Each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. Battery cells can be cylindrical, flat, cuboid, or other shapes.

[0086] According to some embodiments of this application, refer to Figure 2-5As shown in the figure, this application provides a battery device 1100, which includes a battery cell assembly 1110, a refrigerant heat exchange component 1140, and a connector assembly 1150. The refrigerant heat exchange component 1140 has a heat exchange surface 1143, which is close to or in contact with the battery cell. The heat exchange surface 1143 has a symmetrical axis 1145. The refrigerant heat exchange component 1140 has a heat exchange channel 1144 inside, which is symmetrically arranged on both sides of the symmetrical axis 1145. The heat exchange surface 1143 has openings that connect with the heat exchange channel 1144. The flow channel inlet 11441 is connected to the flow channel inlet 144, and the flow channel inlet 11441 is configured symmetrically about the axis of symmetry 1145; the connector assembly 1150 includes a connector component 1151 and a first flow guide component 1152 connected to the connector component 1151. The connector component 1151 is connected to the refrigerant heat exchange component 1140 and is arranged off-axis from the axis of symmetry 1145. The connector component 1151 is connected to the refrigerant heat exchange component 1140 through the first flow guide component 1152 and is connected to the flow channel inlet 11441; the connector assembly 1150 is arranged to avoid the battery cell assembly 1110.

[0087] Specifically, the battery cell assembly 1110 includes one or more battery cells. The refrigerant heat exchange component 1140 needs to exchange heat with the battery cell assembly 1110. Therefore, the refrigerant heat exchange component 1140 needs to be located close to the battery cell assembly 1110, or the refrigerant heat exchange component 1140 needs to directly contact or abut against the battery cell assembly 1110 to improve the heat exchange effect. When the refrigerant heat exchange component 1140 exchanges heat with the battery cell assembly 1110, a large heat exchange surface area 1143 needs to be formed between the refrigerant heat exchange component 1140 and the battery cell to improve the heat exchange effect. Therefore, a heat exchange surface 1143 that is close to or in contact with the surface of the battery cell will be formed on the refrigerant heat exchange component 1140.

[0088] The surface of the battery cell that is close to or in contact with the heat exchange surface 1143 can be the bottom surface or the side surface of the battery cell. Taking the horizontal placement of the battery device 1100 as an example, the surface below the battery cell is the bottom surface, and the surface of the battery cell along the vertical direction is the side surface. Therefore, in this embodiment, the heat exchange surface 1143 of the refrigerant heat exchange component 1140 can be in contact with or close to the bottom surface or the side surface of the battery cell. That is to say, the refrigerant heat exchange component 1140 can be located at the bottom of the battery cell assembly 1110 or at the side of the battery cell assembly 1110. The refrigerant heat exchange component 1140 located at the bottom of the battery cell assembly 1110 can also be called a heat exchange base plate or a cooling base plate.

[0089] For ease of explanation, the following embodiments are illustrated by taking a battery device 1100 of this application as an example, in which the refrigerant heat exchange component 1140 is located at the bottom of the battery cell assembly 1110.

[0090] For the heat exchange channel 1144 inside the refrigerant heat exchange component 1140, the heat exchange channel 1144 can be a hole structure inside the refrigerant heat exchange component 1140. For example, the refrigerant heat exchange component 1140 is plate-shaped, and a through hole structure or cavity structure with a certain extension length and extension path is opened in the plate of the refrigerant heat exchange component 1140. The through hole structure or cavity structure forms the heat exchange channel 1144. The refrigerant heat exchange component 1140 can be integrally molded, and the heat exchange channel 1144 can be manufactured using gas-assisted or water-assisted molding methods. Alternatively, the refrigerant heat exchange component 1140 can also be assembled. For example, the refrigerant heat exchange component 1140 includes a first sub-component 1141 and a second sub-component 1142. A groove structure with a preset extension length and shape is formed on the second sub-component 1142. The groove structure can be manufactured using stamping. The first sub-component 1141 and the second sub-component 1142 are fixedly or detachably connected, and the groove opening is closed to form a through-hole structure or a cavity structure, which forms the heat exchange channel 1144. The heat exchange channel 1144 should be located close to the heat exchange surface 1143, and the extension path of the heat exchange channel 1144 can be parallel to the heat exchange surface 1143 to increase the heat exchange effect.

[0091] A symmetry axis 1145 is formed on the heat exchange surface 1143. It should be noted that the symmetry axis 1145 is a virtual axis, which is set in order to reflect the symmetry of the heat exchange surface 1143 and the symmetry of the heat exchange channel 1144. The heat exchange channel 1144 adopts a symmetrical structure, and the heat exchange channel 1144 is symmetrically arranged on both sides of the axis of symmetry 1145. For example, the heat exchange channel 1144 includes a first sub-channel 11443 and a second sub-channel 11444. Both the first sub-channel 11443 and the second sub-channel 11444 are connected to the channel inlet 11441, and the first sub-channel 11443 and the second sub-channel 11444 are symmetrically arranged about the axis of symmetry 1145. Correspondingly, the channel inlet 11441 is configured symmetrically about the axis of symmetry 1145. It should be understood that when there is one channel inlet 11441, the channel inlet 11441 is opened on the axis of symmetry 1145; when there are multiple channel inlets 11441, the multiple channel inlets 11441 are symmetrically arranged on both sides of the axis of symmetry 1145.

[0092] For the connector assembly 1150, the connector assembly 1150 includes at least a connector component 1151 and a first flow guide component 1152. The connector component 1151 is set off from the axis of symmetry 1145. That is, the connector component 1151 forms an offset installation form on the heat exchange surface 1143 of the refrigerant heat exchange component 1140. The connector component 1151 is a connection head structure for the heat exchange fluid to enter the flow channel inlet 11441. The connector component 1151 is used to connect with external fluid transport pipelines, etc. A certain distance is formed between the connector component 1151 and the flow channel inlet 11441. Therefore, it can be seen that a first flow guiding component 1152 is connected between the connector component 1151 and the flow channel inlet 11441. For example, if the first flow guiding component 1152 adopts a tube structure, one end of the first flow guiding component 1152 is connected to the connector component 1151, and the other end of the first flow guiding component 1152 is connected to the flow channel inlet 11441. The first flow guiding component 1152 is used to transport the heat exchange fluid entering the connector component 1151 to the heat exchange flow channel 1144. The first flow guiding component 1152 plays the role of transporting fluid and guiding flow.

[0093] Since the heat exchange surface 1143 of the refrigerant heat exchange component 1140 needs to be arranged relative to the battery cell assembly 1110, when the connector component 1151 and the first flow guide component 1152 in the connector assembly 1150 are connected to the refrigerant heat exchange component 1140, they need to be able to avoid the battery cell assembly 1110 so as not to interfere with the installation of the battery cell assembly 1110. In particular, when the connector assembly 1150 protrudes from the heat exchange surface 1143, the connector assembly 1150 as a whole needs to avoid the battery cell assembly 1110 during installation.

[0094] The heat exchange fluid can be a heat exchange refrigerant. The heat exchange component 1140 can be a direct cooling heat exchanger. When the battery device 1100 needs heat exchange, the external delivery pipe and the connector component 1151 are assembled. The heat exchange fluid enters the first flow guide component 1152 through the connector component 1151. The first flow guide component 1152 delivers the heat exchange fluid to the flow channel inlet 11441. The heat exchange fluid is symmetrically divided into two sides of the axis of symmetry 1145 of the heat exchange flow channel 1144 through the flow channel inlet 11441, achieving symmetrical and uniform flow distribution. That is, the heat exchange fluid is evenly distributed into the first sub-flow channel 11443 and the second sub-flow channel 11444 through the flow channel inlet 11441.

[0095] In this embodiment, the connector component 1151 is installed in an offset manner on the refrigerant heat exchange component 1140, and the heat exchange channel 1144 is arranged symmetrically. The channel inlet 11441 is configured symmetrically about the axis of symmetry 1145. By adding the first flow guide component 1152, the heat exchange fluid can be transported from the connector component 1151 to the channel inlet 11441 and symmetrically and evenly distributed into the heat exchange channel 1144, achieving uniform distribution. This makes the temperature distribution on the refrigerant heat exchange component 1140 and the heat exchange surface 1143 more uniform, which is beneficial to improving the temperature uniformity performance of the refrigerant heat exchange component 1140 and thus improving the ability of the refrigerant heat exchange component 1140 to uniformly heat the battery cell assembly 1110.

[0096] In some embodiments, refer to Figure 5-8 As shown, the connector assembly 1150 also includes a first manifold component 1153, which is connected between the refrigerant heat exchange component 1140 and the first flow guide component 1152 to connect the first flow guide component 1152 to the flow channel inlet 11441.

[0097] Specifically, the first manifold 1153 is connected to the refrigerant heat exchange component 1140 and to the inlet 11441 of the flow channel, so that the first manifold 1153 communicates with the inlet 11441. It is understood that the installation position of the first manifold 1153 should be symmetrically arranged about the axis of symmetry 1145. For example, the first manifold 1153 is installed on the axis of symmetry 1145 of the heat exchange surface 1143. The first manifold 1153 is also connected to and communicates with the first guide component 1152. It is understood that the first manifold 1153 connects the refrigerant heat exchange component 1140 and the first guide component 1152, serving as a connector between them. The first manifold 1153 enables communication between the first guide component 1152 and the inlet 11441.

[0098] The first flow collector 1153 can adopt a base structure or a pipe structure, etc. Since the first flow collector 1153 connects the first flow guide 1152 and the flow channel inlet 11441, it can be known that the interior of the first flow collector 1153 needs to be opened to allow the heat exchange fluid to flow. This channel can also change the flow direction of the heat exchange fluid. For example, if the heat exchange fluid is transported horizontally in the first flow guide 1152, after passing through the first flow collector 1153, the flow direction of the heat exchange fluid becomes vertical and then flows into the flow channel inlet 11441.

[0099] In this embodiment, by adding a first flow collecting component 1153, it is convenient to connect and communicate between the first flow guiding component 1152 and the flow channel inlet 11441. The first flow collecting component 1153 plays the role of guiding, directing and changing the flow direction of the heat exchange fluid.

[0100] In some embodiments, refer to Figure 7 and Figure 8 As shown, the first flow collecting component 1153 has a flow collecting channel 11531 inside. The flow collecting channel 11531 includes a flow collecting inlet section 11532 and two flow collecting outlet sections 11533, both of which are connected to the flow collecting inlet section 11532. A flow equalization channel wall 11534 is provided inside the flow collecting inlet section 11532 or at the position where the flow collecting inlet section 11532 and the flow collecting outlet section 11533 are connected. The flow equalization channel wall 11534 is arranged to meet the flow exchange fluid. The two flow collecting outlet sections 11533 are respectively arranged on the front and rear sides of the flow equalization channel wall 11534. The end of the flow equalization channel wall 11534 near the flow collecting outlet section 11533 is inclined towards the flow collecting outlet section 11533 near the front side. The flow collecting inlet section 11532 is connected to the first flow guiding component 1152, and the two flow collecting outlet sections 11533 are both connected to the flow channel inlet 11441.

[0101] Specifically, the flow collection channel 11531 can be a through hole structure opened inside the first flow collection component 1153. The flow collection channel 11531 may include multiple through hole structures, and multiple flow collection channels 11531 may be provided. All multiple flow collection channels 11531 can be connected to the first flow guiding component 1152 and the flow channel inlet 11441.

[0102] The flow collection channel 11531 comprises two parts: a flow collection inlet section 11532 and a flow collection outlet section 11533. Two flow collection outlet sections 11533 are provided, each connected to the flow collection inlet section 11532. The flow collection inlet section 11532 and the flow collection outlet section 11533 can be connected in a fixed or detachable manner, or they can be an integral structure. When the heat exchange fluid flows within the flow collection channel, it first enters the flow collection inlet section 11532, then flows from the inlet section 11532 into the two flow collection outlet sections 11533, and finally enters the flow channel inlet 11441 through the two flow collection outlet sections 11533.

[0103] Understandably, both the inlet section 11532 and the outlet section 11533 form partial flow collection channels 11531. The flow collection channels 11531 can have a perforated structure. A flow equalization channel wall 11534 is present within the inlet section 11532 or within the flow collection channel 11531 that connects the inlet section 11532 and the outlet section 11533. The flow equalization channel wall 11534 can be understood as part of the channel wall within the flow collection channel 11531. The flow equalization channel wall 11534 is positioned to meet the heat exchange fluid, meaning that when the heat exchange fluid flows within the flow collection channel, it flows towards the flow equalization channel wall 11534, creating a counter-impact force on the wall. For example, when the flow collection channel has an inlet, the inlet can be oriented opposite to the flow collection channel wall.

[0104] In related technologies, if the flow equalization channel wall 11534 is not inclined, due to the effect of inertial force, the heat exchange fluid will flow more toward the collection outlet section 11533 behind (or on the rear side) of the flow equalization channel wall 11534 after passing through the flow equalization channel wall 11534. This results in the heat exchange fluid flowing into the two collection outlet sections 11533 having different volumes or very large differences, thus causing uneven flow distribution.

[0105] In this embodiment, regarding the arrangement of the flow equalization channel wall 11534, the flow equalization channel wall 11534 is located at the transition position connecting the flow collection inlet section 11532 and the two flow collection outlet sections 11533. The flow equalization channel wall 11534 has front and rear sides. The front side of the flow equalization channel wall 11534 refers to the side of the wall surface of the flow equalization channel wall 11534 facing the inside of the flow collection channel, and the rear side of the flow equalization channel wall 11534 refers to the side of the wall surface of the flow equalization channel wall 11534 facing away from the inside of the flow collection channel. At this transition position, the end of the flow equalization channel wall 11534 near the flow collection outlet section 11533 is inclined toward the flow collection outlet section 11533 on the front side, so as to guide the flow equalization channel wall 11534 toward the flow collection outlet section 11533 on the front side, so that the heat exchange fluid can flow toward the flow collection outlet section 11533 on the front side in a relatively large amount, so that the heat exchange fluid can flow more evenly to the two flow collection outlet sections 11533.

[0106] For ease of description, the flow-collecting outlet section 11533 located in front of the flow-equalizing channel wall 11534 is defined as the first flow-collecting outlet section 11533, and the flow-collecting outlet section 11533 located behind the flow-equalizing channel wall 11534 is defined as the second flow-collecting outlet section 11533. Taking the example where the flow direction of the heat exchange fluid inside the first flow guide component 1152 is horizontal, and the fluid in the flow-collecting inlet section 11532 is transported vertically, the flow-collecting outlet section 11533 is located below the flow-collecting inlet section 11532, the flow-equalizing channel wall 11534 is not horizontal, the upper end of the flow-equalizing channel wall 11534 is near the flow-collecting inlet section 11532, and the lower end of the flow-equalizing channel wall 11534 is near the flow-collecting outlet section 11533. One end of the flow equalization channel wall 11534 is inclined, and the lower end of the flow equalization channel wall 11534 is inclined toward the first flow collection outlet section 11533. It can be understood that the fluid flowing to the flow equalization channel wall 11534 can be transported toward the first flow collection outlet section 11533 after being blocked by the flow equalization fluid, so that the flow rate of the heat exchange fluid entering the first flow collection outlet section 11533 and the second flow collection outlet section 11533 can be more balanced.

[0107] In this embodiment, the flow collection channel 11531 is divided into a flow collection inlet section 11532 and two flow collection outlet sections 11533. A flow equalization channel wall 11534 is provided in the flow collection channel 11531. By tilting the end of the flow equalization channel wall 11534 near the flow collection outlet section 11533 towards the front flow collection outlet section 11533, the heat exchange fluid can flow relatively more towards the front flow collection outlet section 11533, so that the heat exchange fluid can flow more evenly to the two flow collection outlet sections 11533, thereby achieving uniform flow distribution.

[0108] In some embodiments, refer to Figure 8 As shown, the inclination angle α of the flow equalization channel wall 11534 is greater than 0° and less than 90°.

[0109] Specifically, taking the channel in the first flow guiding component 1152 as being horizontal and the channel in the flow collecting inlet section 11532 as being vertical as an example, the inclination angle α is the angle between the flow equalization channel wall 11534 and the vertical direction. The range of the inclination angle α is greater than 0° and less than 90°. For example, the inclination angle α is 10°, 20°, 30°, 45°, 60°, 75°, 80°, etc.

[0110] In this embodiment, by designing different inclination angles α of the flow equalization channel wall 11534, adjustments can be made according to the different positional relationships and dimensions between the flow collection inlet section 11532 and the flow collection outlet section 11533, thereby improving the flexibility of the flow collection channel 11531 arrangement.

[0111] The heat exchange fluid is usually a refrigerant, which is typically in a gas-liquid mixed state. Due to gravity, the heat exchange fluid is separated into gas and liquid phases, which leads to uneven mixing of the heat exchange fluid and affects the uniformity of the flow distribution.

[0112] Therefore, in some embodiments, reference is made to Figure 7 and Figure 8 As shown, a first flow guiding channel 11521 is formed inside the first flow guiding component 1152, and one or more first protrusion structures 11522 are protruding on the channel wall of the first flow guiding channel 11521.

[0113] Specifically, the first flow channel 11521 can be a through-hole structure formed inside the first flow guide component 1152. The first protrusion structure 11522 protrudes from the channel wall and into the channel cavity. The protrusion height of the first protrusion structure 11522 is less than the inner diameter of the first flow channel 11521. The first protrusion structure 11522 can be located at any position on the cross-sectional contour of the first flow channel 11521. For example, the first protrusion structure 11522 can be located at the bottom of the first flow channel 11521 and protrude upward from the bottom into the first flow channel 11521. The first protrusion structure 11522 can be in the form of a sheet, column, etc.

[0114] When the heat exchange fluid flows through the first guide channel 11521, the heat exchange fluid impacts the surface of the first protrusion structure 11522, and the first protrusion structure 11522 extends into the interior of the heat exchange fluid, thereby dispersing and disturbing the heat exchange fluid.

[0115] In this embodiment, the first protrusion structure 11522 can bypass the heat exchange fluid in the first flow channel 11521, thereby making the gas-liquid heat exchange fluid mix more evenly and reducing the impact of heat exchange fluid stratification caused by gravity, so as to improve the uniformity of the flow distribution.

[0116] In some embodiments, refer to Figure 8 As shown, the first flow channel 11521 has a first central axis, and the first protrusion structure 11522 extends along the length direction of the first flow channel 11521 and is inclined relative to the first central axis.

[0117] Specifically, the first central axis can be considered as the extension axis of the first flow guiding channel 11521. The first protruding structure 11522 is located on the channel wall of the first flow guiding channel 11521 and extends along the channel wall for a predetermined length. The extension axis of the first protruding structure 11522 is not parallel to the first central axis of the first flow guiding channel 11521, that is, the extension axis of the first protruding structure 11522 is inclined to the first central axis to form an angle. The angle is greater than 0° and less than 90°. Along the flow direction of the heat exchange fluid, the first protruding structure 11522 can be inclined downward or inclined upward. It can be seen that the extension length direction of the first protruding structure 11522 is set at an angle to the flow direction of the heat exchange fluid.

[0118] Therefore, it can be seen that when the heat exchange fluid flows through the inclined first protrusion structure 11522, the upper and lower surfaces of the first protrusion structure 11522 can make the heat exchange fluid flow inclined upward and downward respectively, thereby changing the original flow direction of the heat exchange fluid and causing multiple changes in direction, thus disturbing the flow of the heat exchange fluid, and the gas and liquid of the heat exchange fluid can be mixed more evenly.

[0119] In this embodiment, the first protrusion structure 11522 is inclined, which can enhance the disturbance effect on the heat exchange fluid, improve the uniformity of gas-liquid mixing, and facilitate uniform flow distribution.

[0120] In some embodiments, refer to Figure 8-10 As shown, the first protrusion structure 11522 is spirally extended around the first central axis.

[0121] Specifically, the first protruding structure 11522 extends along an arc-shaped trajectory within the first flow channel 11521 and forms a spiral shape. Multiple first protruding structures 11522 may be provided, arranged parallel to each other and spaced apart, so that the entire circumference of the channel wall of the first flow channel 11521 is covered by outwardly protruding first protruding structures 11522. The spiral angle of the first protruding structure 11522 can be greater than 0° and less than or equal to 45°.

[0122] The spiral-shaped first protrusion structure 11522 enables the heat exchange fluid to reciprocate in the vertical direction during flow, thereby overcoming the effect of gravity and making the gas-liquid mixture more uniform. On the other hand, the spiral-shaped first protrusion structure 11522 also has the functions of conveying and guiding.

[0123] In this embodiment, the first protrusion structure 11522 is arranged in a spiral shape, which can further enhance the turbulence effect and make the gas-liquid mixture more uniform.

[0124] In some embodiments, refer to Figure 11As shown, the connector assembly 1150 also includes a first insulation structure 1156, which is wrapped around the outer surface of the first flow guide component 1152.

[0125] Specifically, the first insulation structure 1156 is used to insulate the heat exchange fluid flowing through the first guide component 1152, reducing the risk of condensation of gaseous components and water vapor in the heat exchange fluid. The first insulation structure 1156 is wrapped around the outer surface of the first guide component 1152, and the first insulation structure 1156 and the first guide component 1152 can be connected by means of bonding, binding, fasteners, etc. The first insulation structure 1156 can be made of heat insulation materials, such as heat insulation cotton, heat insulation blankets, etc.

[0126] In this embodiment, by wrapping the outer surface of the first flow guide component 1152 with the first heat insulation structure 1156, it is beneficial to reduce the energy loss of the heat exchange fluid and reduce the risk of condensation of water vapor and other substances in the heat exchange fluid, thereby protecting the first flow guide component 1152.

[0127] In some embodiments, refer to Figure 5 As shown, the first guide component 1152 extends along a preset direction X, and the preset direction X is set at a preset angle β with the direction Y of the axis of symmetry. The preset angle β is greater than 0° and less than or equal to 90°.

[0128] Specifically, the first flow guiding component 1152 can be fabricated using a tube structure, with the preset direction X being the length direction of the first flow guiding component 1152, which can be parallel to the heat exchange surface 1143. The outer contour of the cross-section of the first flow guiding component 1152 can be circular, elliptical, or polygonal. The first flow guiding component 1152 can be made of metal, plastic, or other materials, and can also be made of flexible or rigid materials.

[0129] The preset angle β between the preset direction X and the direction Y of the axis of symmetry means that the length direction of the first flow guiding component 1152 is set at a preset angle β with the direction Y of the axis of symmetry. The preset angle β is in the range of 0°-90°, but does not include 0°. For example, the preset angle β can be 10°, 20°, 30°, 45°, 60°, 75° and 90°, etc. For example, if the preset angle β is 90°, it can be seen that the length direction of the first flow guiding component 1152 is perpendicular to the direction Y of the axis of symmetry. The first flow guiding component 1152 delivers heat exchange fluid perpendicular to the axis of symmetry 1145 on one side of the axis of symmetry 1145. The heat exchange fluid passes through the flow equalization channel wall 11534, so that it can flow more evenly into the heat exchange channels 1144 on both sides of the axis of symmetry 1145.

[0130] In this embodiment, the size of the preset included angle β can be specifically set according to the position of the battery cell assembly 1110 to avoid the first flow guiding component 1152 interfering with the battery cell assembly 1110. The first flow guiding component 1152 is set at a preset included angle β with the axis of symmetry 1145. The structure is simple and easy to manufacture and install.

[0131] In some embodiments, refer to Figure 5-7 As shown, the connector assembly 1150 also includes a second flow guiding component 1154 connected to the connector component 1151. A flow channel outlet 11442 connected to the heat exchange flow channel 1144 is provided on the heat exchange surface 1143. The second flow guiding component 1154 is connected to the refrigerant heat exchange component 1140 and is connected to the flow channel outlet 11442.

[0132] Specifically, the heat exchange channel 1144 includes an inlet channel and a return channel that are connected to each other. The inlet of the inlet channel is the channel inlet 11441, and the outlet of the return channel is the channel outlet 11442. The channel outlet 11442 is opened on the heat exchange surface 1143. After the heat exchange fluid exchanges heat with the battery cell assembly 1110, it will flow into the second guide component 1154 from the channel outlet 11442.

[0133] The second flow guiding component 1154 is used to transport the heat exchange fluid inside the refrigerant heat exchange component 1140 to the outside. The second flow guiding component 1154 has a through hole structure inside. For example, the second flow guiding component 1154 can adopt a tube structure. One end of the second flow guiding component 1154 is connected to the refrigerant heat exchange component 1140 and communicates with the flow channel outlet 11442. The other end of the second flow guiding component 1154 is connected to the connector component 1151 and communicates with it.

[0134] Understandably, a first flow guide component 1152 and a second flow guide component 1154 are respectively connected between the connector component 1151 and the refrigerant heat exchange component 1140. The first flow guide component 1152 is used to transport heat exchange fluid into the refrigerant heat exchange component 1140, and the second flow guide component 1154 is used to output heat exchange fluid to the outside of the refrigerant heat exchange component 1140. The first flow guide component 1152 and the second flow guide component 1154 can be independent components, or the first flow guide component 1152 and the second flow guide component 1154 can be connected to form an integral structure.

[0135] In this embodiment, the second flow guiding component 1154 serves to connect and communicate between the refrigerant heat exchange component 1140 and the connector component 1151. By providing the second flow guiding component 1154, the heat exchange fluid flowing out of the refrigerant heat exchange component 1140 can flow to the connector component 1151, which facilitates the connection between the external conveying device and the connector component 1151 to realize the input and output of the heat exchange fluid.

[0136] In some embodiments, refer to Figure 5 , Figure 6 and Figure 10 As shown, a second flow guiding channel 11541 is formed inside the second flow guiding component 1154, and one or more second protrusion structures 11542 are protruding on the channel wall of the second flow guiding channel 11541.

[0137] Specifically, the second flow channel 11541 can be a through-hole structure formed inside the second flow guide component 1154. The second protruding structure 11542 protrudes from the channel wall and into the channel cavity. The protrusion height of the second protruding structure 11542 is less than the inner diameter of the second flow channel 11541. The second protruding structure 11542 can be located at any position on the cross-sectional profile of the second flow channel 11541. For example, the second protruding structure 11542 can be located at the bottom of the second flow channel 11541 and protrude upward from the bottom into the second flow channel 11541. The second protruding structure 11542 can be in the form of a sheet, column, etc.

[0138] When the heat exchange fluid flows through the second guide channel 11541, the heat exchange fluid impacts the surface of the second protrusion structure 11542, and the second protrusion structure 11542 extends into the interior of the heat exchange fluid, thereby dispersing and disturbing the heat exchange fluid.

[0139] In this embodiment, the second protrusion structure 11542 can bypass the heat exchange fluid in the second flow channel 11541, thereby making the gas-liquid heat exchange fluid mix more evenly and reducing the impact of heat exchange fluid stratification caused by gravity.

[0140] In some embodiments, refer to Figure 5 , Figure 6 and Figure 9 As shown, the second flow channel 11541 has a second central axis, and the second protrusion structure 11542 extends along the length direction of the second flow channel 11541 and is inclined relative to the second central axis.

[0141] Specifically, the second central axis can be considered as the extension axis of the second flow guiding channel 11541. The second protruding structure 11542 is located on the channel wall of the second flow guiding channel 11541 and extends along the channel wall for a predetermined length. The extension axis of the second protruding structure 11542 is not parallel to the second central axis of the second flow guiding channel 11541, that is, the extension axis of the second protruding structure 11542 is inclined to the second central axis at an angle. The angle is greater than 0° and less than 90°. Along the flow direction of the heat exchange fluid, the second protruding structure 11542 can be inclined downward or inclined upward. It can be seen that the extension direction of the second protruding structure 11542 is at an angle to the flow direction of the heat exchange fluid.

[0142] Therefore, it can be seen that when the heat exchange fluid flows through the inclined second protrusion structure 11542, the upper and lower surfaces of the second protrusion structure 11542 can make the heat exchange fluid flow inclined upward and downward respectively, thereby changing the original flow direction of the heat exchange fluid and causing multiple changes in direction, thus disturbing the flow of the heat exchange fluid, and the gas and liquid of the heat exchange fluid can be mixed more evenly.

[0143] In this embodiment, the second protrusion structure 11542 is inclined, thereby enhancing the disturbance effect on the heat exchange fluid and improving the uniformity of gas-liquid mixing.

[0144] In some embodiments, refer to Figure 9 As shown, the second protrusion structure 11542 is spirally extended around the second central axis.

[0145] Specifically, the second protruding structure 11542 extends along an arc-shaped trajectory within the second flow channel 11541 and forms a spiral shape. Multiple second protruding structures 11542 may be provided, arranged parallel to each other and spaced apart, so that the entire circumference of the channel wall of the second flow channel 11541 is covered by outwardly protruding second protruding structures 11542. The spiral angle of the second protruding structure 11542 can be greater than 0° and less than or equal to 45°.

[0146] The spiral-shaped second protrusion structure 11542 enables the heat exchange fluid to reciprocate in the vertical direction during flow, thereby overcoming the effect of gravity and making the gas-liquid mixture more uniform. On the other hand, the spiral-shaped second protrusion structure 11542 also has the functions of conveying and guiding.

[0147] In this embodiment, the second protrusion structure 11542 is arranged in a spiral shape, which can further enhance the turbulence effect and make the gas-liquid mixture more uniform.

[0148] In some embodiments, refer to Figure 11As shown, the connector assembly 1150 also includes a second insulation structure 1157, which is wrapped around the outer surface of the second flow guide component 1154.

[0149] Specifically, the second insulation structure 1157 is used to insulate the heat exchange fluid flowing through the second guide component 1154, reducing the risk of condensation of gaseous components and water vapor in the heat exchange fluid. The second insulation structure 1157 is wrapped around the outer surface of the second guide component 1154, and the second insulation structure 1157 and the second guide component 1154 can be connected by means of bonding, binding, fasteners, etc. The second insulation structure 1157 can be made of thermal insulation materials, such as thermal insulation cotton or thermal insulation blankets.

[0150] In this embodiment, by wrapping the outer surface of the second flow guide component 1154 with the second heat insulation structure 1157, it is beneficial to reduce the energy loss of the heat exchange fluid and reduce the risk of condensation of water vapor and other substances in the heat exchange fluid, thereby protecting the second flow guide component 1154.

[0151] In some embodiments, refer to Figure 5 and Figure 6 As shown, the connector assembly 1150 also includes a second manifold 1155, which is connected between the refrigerant heat exchange component 1140 and the second flow guide component 1154 to connect the second flow guide component 1154 to the flow channel outlet 11442.

[0152] Specifically, the second manifold 1155 is connected to the refrigerant heat exchange component 1140 and to the outlet 11442 of the flow channel, so that the second manifold 1155 communicates with the outlet 11442. Therefore, the installation position of the second manifold 1155 should be symmetrically arranged about the axis of symmetry 1145. For example, the second manifold 1155 is installed on the axis of symmetry 1145 of the heat exchange surface 1143. The second manifold 1155 is also connected to and communicates with the second guide component 1154. It is understood that the second manifold 1155 connects the refrigerant heat exchange component 1140 and the second guide component 1154, serving as a connector between them. The second manifold 1155 enables communication between the second guide component 1154 and the outlet 11442.

[0153] The second flow collector 1155 can adopt a base structure or a tube structure, etc. Since the second flow collector 1155 connects the second flow guide 1154 and the flow channel outlet 11442, it can be known that the interior of the second flow collector 1155 needs to be opened to allow the heat exchange fluid to flow. This channel can also change the flow direction of the heat exchange fluid. For example, if the flow direction of the heat exchange fluid at the flow channel outlet 11442 is vertical, then after passing through the second flow collector 1155, the flow direction of the heat exchange fluid becomes horizontal and enters the second flow guide 1154 which extends horizontally.

[0154] In this embodiment, by adding a second flow collecting component 1155, it is convenient to connect and communicate with the second flow guiding component 1154 and the flow channel outlet 11442. The second flow collecting component 1155 plays the role of guiding, directing and changing the flow direction of the heat exchange fluid.

[0155] In some embodiments, refer to Figure 2 As shown, the battery device 1100 also includes a housing 1120 with an internal accommodating space 1113. The housing 1120 has a bottom surface, and the battery cell assembly 1110 and the refrigerant heat exchange component 1140 are housed in the accommodating space 1113. The refrigerant heat exchange component 1140 is disposed in contact with the bottom surface of the housing.

[0156] For the housing 1120, the housing 1120 is used to accommodate the battery cell assembly 1110. The housing 1120 may include a first part 1121 and a second part 1122, which overlap each other, and together define an accommodating space 1113 for accommodating the battery cell assembly 1110. The first part 1121 may be a plate-like structure, and the second part 1122 may be a hollow structure with one open end. The first part 1121 covers the open side of the second part 1122 to jointly define the accommodating space 1113. Optionally, the first part 1121 may also be a hollow structure with one open side, in which case the second part 1122 may also be a hollow structure with one open end, and the open side of the first part 1121 covers the open side of the second part 1122 to jointly define the accommodating space 1113. The box body 1120 can be of various shapes, such as a cylinder or a cuboid. The second part 1122 may include a frame 11221 and a box bottom 11222. The box bottom 11222 may be a plate structure, therefore, the box bottom 11222 is also called the box bottom plate. The frame 11221 is arranged around to form the side wall of the box body 1120. The frame 11221 forms two openings, one at the top and one at the bottom. The box bottom 11222 is connected to the bottom opening of the frame 11221, and the second part 1122 is connected to the upper opening of the frame 11221.

[0157] Generally, when the battery pack 1100 is placed horizontally, the bottom plate of the box is also horizontal, and the refrigerant heat exchange component 1140 can be placed on the bottom plate. At this time, the refrigerant heat exchange component 1140 can be plate-shaped, and the upper surface of the refrigerant heat exchange component 1140 forms the heat exchange surface 1143. The bottom surface of each battery cell in the battery cell assembly 1110 abuts against the heat exchange surface 1143. The refrigerant heat exchange component 1140 can also support and support the battery cell assembly 1110.

[0158] In this embodiment, the refrigerant heat exchange component 1140 is placed on the bottom 11222 of the housing 1120, thereby realizing bottom heat exchange of the battery cell assembly 1110. The heat exchange surface area 1143 is large, which is beneficial to improving heat exchange efficiency.

[0159] In some embodiments, refer to Figure 3 As shown, the battery device 1100 also includes a housing body 1130, a refrigerant heat exchange component 1140 connected to the housing body 1130 and together with the housing body 1130 forming an accommodating space 1113, a battery cell assembly 1110 housed in the accommodating space 1113, and the refrigerant heat exchange component 1140 being used to support the battery cell assembly 1110.

[0160] Specifically, the housing body 1130 may include a cover 1131 and a frame 1132, which cover each other. The cover 1131, frame 1132, and refrigerant heat exchange component 1140 together define an accommodating space 1113 for accommodating the battery cell assembly 1110. The cover 1131 may be a plate-like structure, and the frame 1132 may be a hollow structure with openings at both ends. For example, the frame 1132 may be an annular frame structure. The cover 1131 covers one open side of the frame 1132, and the refrigerant heat exchange component 1140 is connected to the other open side of the frame 1132. The cover 1131 may be disposed opposite to the refrigerant heat exchange component 1140. The housing body 1130 may have various shapes, such as a cylinder or a cuboid.

[0161] In this embodiment, the refrigerant heat exchange component 1140 can be connected to the box body 1130. The refrigerant heat exchange component 1140 can form the bottom plate of the box, so that it can exchange heat with the battery cell assembly 1110 and also support the battery cell assembly 1110. This helps to simplify the structure of the external box body 1130 and reduce the weight of the battery device 1100.

[0162] In some embodiments, refer to Figure 4 and Figure 5 As shown, along the direction Y of the axis of symmetry, the heat exchange surface 1143 has an edge region 1146, and the connector assembly 1150 is disposed in the edge region 1146.

[0163] Specifically, the edge region 1146 is the position on the heat exchange surface 1143 near the edge. For example, if the direction Y along the axis of symmetry is defined as the length direction of the heat exchange surface 1143 and the direction Y perpendicular to the axis of symmetry is defined as the width direction of the heat exchange surface 1143, then the edge region 1146 is formed at one end of the heat exchange surface 1143 along the length direction and near the edge. The connector component 1151, the first flow guide component 1152, the first flow collector component 1153, the second flow guide component 1154, and the second flow collector component 1155 in the connector assembly 1150 are all located in the edge region 1146.

[0164] The battery cell assembly 1110 abuts against the heat exchange surface 1143 and avoids the edge region 1146, so that the connector assembly 1150 can avoid the battery cell assembly 1110, making it less likely for interference to occur between the connector assembly 1150 and the battery cell assembly 1110.

[0165] In this embodiment, each component in the connector assembly 1150 is disposed on the edge region 1146 of the heat exchange surface 1143. This allows the connector assembly 1150 to avoid the battery cell assembly 1110, thereby relatively increasing the heat exchange surface area between the heat exchange surface 1143 and the battery cell assembly 1110, which helps to ensure the heat exchange efficiency of the refrigerant heat exchange component 1140.

[0166] In one specific embodiment, refer to Figure 3-11As shown, the battery device 1100 includes a battery cell assembly 1110, a refrigerant heat exchange component 1140, and a connector assembly 1150. The refrigerant heat exchange component 1140 has a heat exchange surface 1143, which is close to or in contact with the battery cell. The heat exchange surface 1143 has a symmetrical axis 1145. The refrigerant heat exchange component 1140 has internal heat exchange channels 1144, which are symmetrically arranged on both sides of the symmetrical axis 1145. A flow inlet 11441 communicating with the heat exchange channel 1144 is provided on the heat exchange surface 1143, and the flow inlet 11441 is configured symmetrically about the symmetrical axis 1145. The connector assembly 1150 includes... The assembly includes a connector component 1151 and a first flow guide component 1152 connected to the connector component 1151. The connector component 1151 is connected to the refrigerant heat exchange component 1140 and arranged off-axis of symmetry 1145. The connector component 1151 is connected to the refrigerant heat exchange component 1140 via the first flow guide component 1152 and communicates with the flow channel inlet 11441. The connector assembly 1150 is arranged to avoid the battery cell assembly 1110. The connector assembly 1150 also includes a first current collector 1153, which is connected between the refrigerant heat exchange component 1140 and the first flow guide component 1152 for connecting the first flow guide component 1152 to the flow channel inlet 11441. 1. Connected; The first collecting component 1153 has a collecting channel 11531 inside, the collecting channel 11531 includes a collecting inlet section 11532 and two collecting outlet sections 11533, both of which are connected to the collecting inlet section 11532. A flow equalization channel wall 11534 is provided inside the collecting inlet section 11532 or at the location where the collecting inlet section 11532 and the collecting outlet section 11533 are connected. The flow equalization channel wall 11534 is arranged to meet the flow exchange fluid. The two collecting outlet sections 11533 are respectively arranged on the front and rear sides of the flow equalization channel wall 11534. The end of the flow equalization channel wall 11534 near the collecting outlet section 11533 faces the collecting outlet section near the front side. The inlet section 11533 is inclined; the inlet section 11532 is connected to the first guide component 1152, and both outlet sections 11533 are connected to the flow channel inlet 11441; a first guide channel 11521 is formed inside the first guide component 1152, and one or more first protrusion structures 11522 are protruding on the channel wall of the first guide channel 11521; the first guide channel 11521 has a first central axis, and the first protrusion structures 11522 are spirally extended around the first central axis; the connector assembly 1150 also includes a first insulation structure 1156, which is wrapped around the outer surface of the first guide component 1152;The connector assembly 1150 also includes a second flow guiding component 1154 connected to the connector component 1151. A flow channel outlet 11442 connected to the heat exchange surface 1143 is provided, and the second flow guiding component 1154 is connected to the refrigerant heat exchange component 1140 and connected to the flow channel outlet 11442. A second flow guiding channel 11541 is formed inside the second flow guiding component 1154, and one or more second protrusion structures 11542 are provided on the channel wall of the second flow guiding channel 11541. The connector assembly 1150 also includes a second heat insulation structure 1157, which is wrapped around the outer surface of the second flow guiding component 1154. The connector assembly 1150 also includes a second flow collecting component 1155, which is connected between the refrigerant heat exchange component 1140 and the second flow guiding component 1154 to connect the second flow guiding component 1154 to the flow channel outlet 11442. ;

[0167] According to some embodiments of this application, this application also provides a refrigerant heat exchange device, which includes a refrigerant heat exchange component 1140 and a connector assembly 1150 as in any of the above embodiments of the battery device.

[0168] The example of the refrigerant heat exchange device in this application is based on the example of the battery device 1100 described above. The example of the refrigerant heat exchange device includes all the technical effects of the example of the battery device 1100 described above, and will not be repeated here.

[0169] According to some embodiments of this application, this application also provides an energy storage device, which includes a power conversion device and the energy storage device in the above embodiments. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0170] Specifically, the energy storage device may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices 1100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0171] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0172] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0173] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0174] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0175] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 1100 via piping to regulate the temperature of the individual battery cells.

[0176] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0177] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an Insulation Monitoring Module (IMM), a Master Battery Management Unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0178] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0179] As an example, a power distribution module can be used to distribute power to modules in an energy storage device that require electricity.

[0180] According to some embodiments of this application, this application also provides an energy storage system, which includes a power conversion device and an energy storage device as described in the above embodiments. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0181] In some embodiments, the energy storage system may include one or more energy storage devices and a power conversion system (PCS), wherein the power conversion system is used to connect the power generation device and the energy storage device. The power generation device generates electrical energy, which can be stored in the energy storage device through the power conversion system. As examples, the power generation device may specifically be a solar panel, hydroelectric power generation device, thermal power generation device, wind power generation device, etc. The specific type of power generation device is not limited in this application.

[0182] According to some embodiments of this application, refer to Figure 1 As shown, this application also provides an electrical device, which includes the battery device 1100 in the above embodiments, the energy storage device in the above embodiments, or the energy storage system in the above embodiments. The battery device 1100 is used to store or provide electrical energy.

[0183] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0184] The examples of electrical devices in this application are based on the examples of the battery device 1100 described above. The examples of electrical devices include all the technical effects of the examples of the battery device 1100 described above, and will not be repeated here.

[0185] According to some embodiments of this application, this application also provides a charging network, which includes charging piles and energy storage devices or energy storage systems as described in the above embodiments, wherein the energy storage devices are used to provide electrical energy to the charging piles.

[0186] For example, the charging network includes charging stations and energy storage devices. The charging stations are electrically connected to the energy storage devices, which provide power to the charging stations. The charging stations are also electrically connected to a battery unit 1100 in the energy storage devices via cables. The battery unit 1100 can provide its stored electrical energy to the charging stations. The charging stations have one or more connectors for connecting to electrical devices (such as vehicle 1000) to replenish their power.

[0187] Energy storage devices can be located inside the charging pile (e.g., an integrated energy storage and charging unit) or outside the charging pile.

[0188] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery device (1100) characterized by, The application relates to a battery cell assembly (1110) and a refrigerant heat exchange component (1140) having a heat exchange surface (1143) close to or in contact with the battery cell, the heat exchange surface (1143) having an axis of symmetry (1145), the refrigerant heat exchange component (1140) having a heat exchange flow channel (1144) inside the refrigerant heat exchange component (1140), the heat exchange flow channel (1144) being symmetrically arranged on both sides of the axis of symmetry (1145), the heat exchange surface (1143) being provided with a flow channel inlet (11441) in communication with the heat exchange flow channel (1144), the flow channel inlet (11441) being symmetrically arranged about the axis of symmetry (1145). The application also relates to a joint assembly (1150) comprising a joint component (1151) and a first flow guide component (1152) in communication with the joint component (1151), the joint component (1151) being connected to the refrigerant heat exchange component (1140) and arranged away from the axis of symmetry (1145), the joint component (1151) being connected to the refrigerant heat exchange component (1140) through the first flow guide component (1152) and in communication with the flow channel inlet (11441), the joint assembly (1150) being arranged to avoid the battery cell assembly (1110). The joint assembly (1150) further comprises a first flow collecting component (1153) connected between the refrigerant heat exchange component (1140) and the first flow guide component (1152) for connecting the first flow guide component (1152) to the flow channel inlet (11441). The first flow collecting component (1153) has a flow collecting channel (11531) inside the first flow collecting component (1153), the flow collecting channel (11531) comprising a flow collecting inlet section (11532) and two flow collecting outlet sections (11533) in communication with the flow collecting inlet section (11532), the flow collecting inlet section (11532) being provided with a uniform flow channel wall (11534) inside the flow collecting inlet section (11532) or at a position where the flow collecting inlet section (11532) is in communication with the flow collecting outlet sections (11533), the uniform flow channel wall (11534) being arranged to be in contact with the flow switching fluid, the two flow collecting outlet sections (11533) being arranged on the front and back sides of the uniform flow channel wall (11534) respectively, one end of the uniform flow channel wall (11534) close to the flow collecting outlet section (11533) being arranged to be inclined towards the flow collecting outlet section (11533) on the front side, the flow collecting inlet section (11532) being in communication with the first flow guide component (1152), and the two flow collecting outlet sections (11533) being in communication with the flow channel inlet (11441).

2. The battery device (1100) of claim 1, wherein, The inclination angle (a) of the uniform flow channel wall (11534) ranges from greater than 0° to less than 90°.

3. The battery device (1100) of claim 2, wherein, ​ 4. The battery device (1100) of claim 3, wherein, ​ 5. The battery device (1100) according to any one of claims 1-4, characterized in that, The first flow guide component (1152) has a first flow channel (11521) formed inside, and one or more first protruding structures (11522) are protruded on the channel wall surface of the first flow channel (11521).

6. The battery device (1100) of claim 5, wherein, The first flow channel (11521) has a first central axis, and the first protruding structure (11522) extends along the length direction of the first flow channel (11521) and is arranged obliquely relative to the first central axis.

7. The battery device (1100) of claim 5, wherein, The first flow channel (11521) has a first central axis, and the first protruding structure (11522) is arranged in a spiral extending manner around the first central axis.

8. The battery device (1100) according to any one of claims 1-4, characterized by The joint assembly (1150) further comprises a first heat preservation structure (1156) wrapped on the outer surface of the first flow guide component (1152).

9. The battery device (1100) according to any one of claims 1-4, characterized by The first flow guide component (1152) is arranged in a preset direction, and the preset direction is arranged at a preset included angle (β) with the direction (Y) of the symmetry axis, and the preset included angle (β) ranges from greater than 0° to less than or equal to 90°.

10. The battery device (1100) according to any one of claims 1-4, characterized by The joint assembly (1150) further comprises a second flow guide component (1154) connected to the joint component (1151), and the heat exchange surface (1143) is provided with a flow channel outlet (11442) connected to the heat exchange flow channel (1144), and the second flow guide component (1154) is connected to the refrigerant heat exchange component (1140) and connected to the flow channel outlet (11442).

11. The battery device (1100) of claim 10, wherein, The second flow guide component (1154) has a second flow channel (11541) formed inside, and one or more second protruding structures (11542) are protruded on the channel wall surface of the second flow channel (11541).

12. The battery device (1100) of claim 11, wherein, The second flow channel (11541) has a second central axis, and the second protruding structure (11542) extends along the length direction of the second flow channel (11541) and is arranged obliquely relative to the second central axis.

13. The battery device (1100) of claim 12, wherein, The second protruding structure (11542) is arranged in a spiral extending manner around the second central axis.

14. The battery apparatus (1100) of claim 10, wherein, The joint assembly (1150) further comprises a second heat preservation structure (1157) wrapped on the outer surface of the second flow guide component (1154).

15. The battery apparatus (1100) of claim 10, wherein, The joint assembly (1150) further comprises a second flow collecting component (1155) connected between the refrigerant heat exchange component (1140) and the second flow guide component (1154), so as to connect the second flow guide component (1154) and the flow channel outlet (11442).

16. The battery device (1100) according to any one of claims 1-4, characterized by The battery device (1100) further comprises a box body (1120) having a containing space (1113), and the battery monomer assembly (1110) is contained in the containing space (1113), and the refrigerant heat exchange component (1140) is located in the containing space (1113) and arranged on the box bottom (11222) of the box body (1120), so as to support the battery monomer assembly (1110).

17. The battery device (1100) according to any one of claims 1-4, characterized by The battery device (1100) further comprises a box body (1130), the refrigerant heat exchange component (1140) is connected to the box body (1130) and cooperatively enclosed with the box body (1130) to form a containing space (1113), the battery cell assembly (1110) is contained in the containing space (1113), and the refrigerant heat exchange component (1140) can be used to support the battery cell assembly (1110).

18. The battery device (1100) according to any one of claims 1-4, characterized by In the direction (Y) of the symmetry axis, the heat exchange surface (1143) has an edge region (1146), and the joint assembly (1150) is arranged at the edge region (1146).

19. A refrigerant heat exchange device characterized by comprising: The refrigerant heat exchange component (1140) and the joint assembly (1150) in the battery device (1100) as claimed in any one of claims 1-18.

20. An electrical device, comprising: The battery device (1100) as claimed in any one of claims 1-18 is used for storing or providing electric energy.

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