Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device. The battery device comprises a box body, a battery monomer assembly and a heat management part, the heat management component comprises a heat exchange tube, a plurality of heat exchange runners are arranged in the heat exchange tube, the heat exchange runners are configured to conduct a heat exchange medium, and the end of the heat exchange tube is a port of the heat exchange runners; the current collectors are connected to the ends of the heat exchange pipes in a matched mode and communicate with the ports, and the current collectors are configured to distribute the heat exchange media into the multiple heat exchange flow channels and collect the heat exchange media in the multiple heat exchange flow channels; the connecting piece is arranged between the heat exchange tube and the current collector, and the connecting piece is connected with the heat exchange tube and the current collector in an injection molding and wrapping mode. The current collector is connected with the end portion of the heat exchange tube in a matched mode, connection between the current collector and the heat exchange tube is achieved through the connecting piece, and therefore the heat exchange tube and the current collector can be well attached through the surface of the end portion, and then connection between the heat exchange tube and the current collector is achieved through the connecting piece. The connection stability between the heat exchange tube and the current collector can be improved.

Description

[0001] This application refers to Chinese Patent Application No. 2024208691331, filed on April 24, 2024, entitled “Thermal Management Components, Batteries and Electrical Devices,” which is incorporated herein by reference in its entirety. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to battery devices and electrical devices. Background Art

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0004] Temperature has a significant impact on battery performance, so conventional batteries are equipped with thermal management components to cool the battery or heat the battery in low-temperature environments to bring it to a normal operating temperature range.

[0005] However, in current thermal management components, the size and surface flatness of the heat exchange tubes are difficult to control, which can easily lead to poor connection when connecting the heat exchange tubes to the current collector, affecting the overall performance of the thermal management component. Utility Model Content

[0006] Based on this, the present application provides a battery device and an electrical device.

[0007] In the first aspect, the present application provides a battery device, including a box body, a battery cell assembly and a thermal management component, the interior of the box body is provided with a accommodating cavity, and the battery cell assembly is arranged in the accommodating cavity; the thermal management component accommodates a heat exchange medium, and the thermal management component is configured to adjust the temperature of the battery cell assembly; wherein the thermal management component includes a heat exchange tube, a collector and a connector, the interior of the heat exchange tube has a plurality of heat exchange channels, the heat exchange channels are configured to conduct the heat exchange medium, and the end of the heat exchange tube is a port of the heat exchange channel; the collector is connected to the end of the heat exchange tube and is connected to the port, and the collector is configured to divert the heat exchange medium to multiple heat exchange channels and collect the heat exchange medium in multiple heat exchange channels; the connector is provided between the heat exchange tube and the collector, and the connector is injection molded and coated to connect the heat exchange tube and the collector.

[0008] The connecting piece is stably connected to the side wall or outer peripheral wall of the current collector and the heat exchange tube to improve the connection stability between the current collector and the heat exchange tube.

[0009] In some embodiments, the current collector and the heat exchange tube are made of different materials.

[0010] In some embodiments, the current collector is made of plastic and the heat exchange tube is made of metal.

[0011] In some embodiments, the connecting member is an annular structure and is disposed around the outer circumference of the heat exchange tube and the current collector.

[0012] With the above structure, on the one hand, the connector can cover the connection position between the heat exchange tube and the current collector, providing a certain degree of protection for the connection position. On the other hand, the connector can also achieve a fixed connection between the current collector and the heat exchange tube, thus enabling the assembly of the two.

[0013] In some embodiments, the current collector includes a main body and a plurality of support members. The main body is connected to the heat exchange tube, and the support members are arranged at intervals along the circumference of the main body.

[0014] By providing support members, the support members can support the heat exchange tubes, thereby fixing the size of the heat exchange tube port position, improving the flatness of the port position, and ensuring a good fit between the heat exchange tubes and the current collector. Connectors are then used to connect the heat exchange tubes and the current collector, thus improving the stability of the connection between the heat exchange tubes and the current collector. In addition, multiple support members arranged at intervals can provide multi-point support for the heat exchange flow channel, improving support stability.

[0015] In some embodiments, when the main body is coupled to the heat exchange tube, at least one support member extends into the heat exchange channel.

[0016] In some embodiments, when the main body is coupled to the heat exchange tube, the two support members extend into the heat exchange channel. Thus, the support members extending into the heat exchange channel can provide more stable support for the heat exchange channel.

[0017] In some embodiments, each support member has a support surface that abuts against the inner wall of the heat exchange tube. The support surface enables the support member to abut against the inner wall of the heat exchange tube more stably, thereby improving the support stability of the support member for the heat exchange channel.

[0018] In some embodiments, the main body includes a first connecting portion and a second connecting portion formed on the surface of the first connecting portion, a step surface is formed between the first connecting portion and the second connecting portion, one end of the connecting member is covered on the step surface, and the other end is covered on the outer periphery of the heat exchange tube.

[0019] With the above structure, when the connector is connected between the heat exchange tube and the current collector, the connector can be respectively wrapped around the outer periphery and the step surface of the heat exchange tube, thereby improving the connection stability between the current collector and the heat exchange tube.

[0020] In some embodiments, the first connecting portion has a first end surface, the second connecting portion is disposed on the first end surface, and the first end surface intersects with the step surface; wherein the first end surface is used to abut against the end surface of the connecting member for limiting position.

[0021] By providing the first end face, a stepped structure is formed between the first end face and the second connecting portion, so that when the connecting piece is sleeved on the second connecting portion, a limited fit can be formed between the first end face, thereby improving assembly efficiency.

[0022] In some embodiments, the second connection portion has a second end face at one end facing away from the first connection portion, and the second end face abuts against the end face of the heat exchange tube; each support member is protruded on the second end face, and the support surface of each support member is staggered from the end face of the heat exchange tube to fit with the inner wall of the heat exchange tube.

[0023] As a result, the support member can more stably support the inner wall of the heat exchange tube, making the connection between the heat exchange tube and the current collector more stable.

[0024] In some embodiments, the current collector further includes a wrapping portion disposed on the first connecting portion, the wrapping portion is disposed around the outer periphery of the second connecting portion, and a limiting groove is formed between the wrapping portion and the second connecting portion, and the limiting groove is used to clamp the heat exchange tube.

[0025] Thus, the connector is arranged around the periphery of the wrapping portion. When the connector is fixed by the glue-coating injection molding process, the wrapping portion can prevent glue from overflowing into the interior of the heat exchange tube or the current collector during the injection molding process, thereby achieving a certain protective effect.

[0026] In some embodiments, the battery cell assembly includes a plurality of battery cells, the thermal management components are provided in plurality, the plurality of battery cells are arranged in a plurality of rows, and the battery cells in each row are provided between two adjacent thermal management components.

[0027] In some embodiments, the battery cell includes a top surface and a bottom surface arranged opposite to each other, and a side surface arranged between the top surface and the bottom surface, the side surface includes a first side surface arranged opposite to each other and a second side surface connecting the two first side surfaces, the area of ​​the first side surface is greater than the area of ​​the second side surface, and the thermal management component is at least partially arranged between the first side surfaces of two adjacent battery cells.

[0028] In a second aspect, the present application further provides an electrical device, comprising the battery device as described above, and the battery device is used to provide electrical energy.

[0029] In the above-mentioned battery device and electrical device, the collector and the end of the heat exchange tube are connected by injection molding and coating with a connector. As a result, the heat exchange tube and the collector can be well fitted through the surface of the end, and then the connection between the heat exchange tube and the collector is achieved through the connector, which can improve the connection stability between the heat exchange tube and the collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0031] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments.

[0032] Figure 2 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.

[0033] Figure 3 FIG. 4 is a schematic structural diagram of a thermal management component according to one or more embodiments.

[0034] Figure 4 is an exploded view of a thermal management component according to one or more embodiments.

[0035] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0036] Figure 6 Schematic diagram of the structure of a current collector in a thermal management component according to one or more embodiments.

[0037] Figure 7 Schematic diagram of the structure of a current collector in a thermal management component according to one or more embodiments.

[0038] Explanation of the accompanying drawings: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, housing; 20, battery cell; 30, thermal management component; 11, first part; 12, second part; 31, heat exchange tube; 32, current collector; 33, connector; 311, heat exchange channel; 321, opening; 322, support member; 323, main body; 324, first connecting part; 325, second connecting part; 326, step surface; 327, first end face; 328, second end face; 329, wrapping part; 330, limit groove; a, preset direction. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0041] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0045] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in other fields. As the application of power batteries continues to expand, market demand is also growing.

[0046] A battery system typically consists of a battery cell and a housing. The housing houses the battery cell, providing both space and protection. Within a battery, the cell is the component where the electrochemical reaction actually occurs. When this electrochemical reaction occurs within the cell, it generates heat.

[0047] As battery cells are used over time, they continuously generate heat, causing the internal temperature of the battery to gradually rise, affecting battery performance. Therefore, thermal management components are typically installed within battery devices to cool the battery or, in low-temperature environments, to heat it up to its normal operating temperature range.

[0048] However, in the thermal management component, the ends of the heat exchange tubes are flat, making their size and surface flatness difficult to control. When the heat exchange tubes are connected to the current collector, the joint surfaces often don't align well, resulting in a poor connection between the tubes and the current collector, impacting the overall performance of the thermal management component.

[0049] Based on the above considerations, in order to solve the problem of poor connection that is prone to occur when the heat exchange tube is connected to the collector, one or more embodiments of the present application provide a battery device. When the heat exchange tube is connected to the collector, the collector is matched with the end of the heat exchange tube, and the connection between the collector and the heat exchange tube is achieved by injection molding and covering the connector. As a result, the heat exchange tube and the collector can fit well through the surface of the end, and then the connection between the heat exchange tube and the collector is achieved through the connector, which can improve the connection stability between the heat exchange tube and the collector.

[0050] The present invention provides an electrical device that uses a battery device as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0051] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0052] Please refer to Figure 1 The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0053] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0054] Please refer to Figure 2 The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 is used to provide a storage space for the battery cell 20, and the housing 10 can have a variety of structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which cover each other and together define a storage space for the battery cell 20. The second portion 12 can be a hollow structure with one end open, and the first portion 11 can be a plate-like structure, with the first portion 11 covering the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. The first portion 11 and the second portion 12 can also be hollow structures with one end open, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have a variety of shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0055] In the battery device 100, there may be multiple battery cells 20, which may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery unit 20 may be housed within the housing 10. Alternatively, the battery device 100 may comprise multiple battery cells 20 connected in series, in parallel, or in a hybrid connection to form a battery module, which is then further connected in series, in parallel, or in a hybrid connection to form a single unit and housed within the housing 10. The battery device 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0056] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0057] See Figure 3 、 Figure 4 as well as Figure 5 One embodiment of the present application provides a battery device 100, comprising a housing 10, a battery cell assembly, and a thermal management component 30. The housing 10 defines a receiving cavity within which the battery cell assembly is disposed. The thermal management component 30 accommodates a heat exchange medium and is configured to regulate the temperature of the battery cell assembly.

[0058] The thermal management component 30 includes a heat exchange tube 31, a fluid collector 32, and a connector 33. The heat exchange tube 31 has multiple heat exchange channels 311 within it, which are configured to conduct heat exchange medium. The ends of the heat exchange tubes 31 serve as ports for the heat exchange channels 311. The fluid collector 32 is connected to the ends of the heat exchange tubes 31 and communicates with the ports. The fluid collector 32 is configured to divert the heat exchange medium between the multiple heat exchange channels 311 and to collect the heat exchange medium in the multiple heat exchange channels 311. The connector 33 is disposed between the heat exchange tube 31 and the fluid collector 32 and is injection molded to connect the heat exchange tubes 31 and the fluid collector 32.

[0059] The thermal management component 30 is a component disposed within the housing 10 of the battery device 100 and used to accommodate a heat exchange medium to regulate the temperature of the battery cells 20 within the housing 10. The battery cells 20 generate heat during circulation, and the thermal management component 30 can be used to cool the battery cells 20. In this case, the thermal management component 30 can accommodate a cooling medium and may also be referred to as a cooling element, cooling system, cooling plate, or liquid cooling plate. Of course, in other cases, the thermal management component 30 can also be used to heat the battery cells 20, which will not be discussed here.

[0060] The heat exchange tube 31 has multiple heat exchange channels 311 extending along a predetermined direction a and providing a flow path for the heat exchange medium. The heat exchange tube 31 is attached to the surface of the battery cell 20. When the heat exchange medium flows through the heat exchange channels 311, it removes heat generated by the battery cell 20, thereby cooling the battery cell 20.

[0061] Furthermore, the current collectors 32 are disposed at opposite ends of the heat exchange tube 31 along a preset direction a. The current collectors 32 are provided with openings 321 communicating with the ports of the heat exchange channel 311 .

[0062] Specifically, the heat exchange channel 311 extends along a predetermined direction a and penetrates the heat exchange tube 31 in the predetermined direction a. In other words, the heat exchange channel 311 has an inlet at one end and an outlet at the other end along the predetermined direction a. Heat exchange medium is introduced into the heat exchange channel 311 from the inlet and flows out from the outlet, thereby achieving heat exchange.

[0063] The current collector 32 is disposed at opposite ends of the heat exchange tube 31 along a predetermined direction a. When the current collector 32 is disposed on the inlet side of the heat exchange channel 311, the opening 321 on the current collector 32 serves as the input port for the heat exchange medium. When the current collector 32 is disposed on the outlet side of the heat exchange channel 311, the opening 321 on the current collector 32 serves as the output port for the heat exchange medium.

[0064] When the current collector 32 is connected to the heat exchange tube 31, the opening 321 on the current collector 32 is in communication with the heat exchange channel 311. Thus, a heat exchange medium can be input into the heat exchange channel 311 through the input port on the current collector 32, allowing it to flow through the heat exchange channel 311, remove heat from the battery cells 20, and finally flow out through the output port on the current collector 32.

[0065] It should be noted that the heat generated by the battery cells 20 is generally concentrated on the large surface of the battery cells 20. Therefore, the heat exchange tubes 31 are arranged in close contact with the large surface of the battery cells 20 to facilitate better heat exchange between the heat exchange medium and the large surface of the battery cells 20. As such, the heat exchange tubes 31 are generally provided in a flat structure to match the large surface of the battery cells 20.

[0066] The heat exchange tube 31 is hollow inside to form a heat exchange channel 311, which makes it difficult to control the size and surface flatness of the end of the heat exchange tube 31. When the heat exchange tube 31 is connected to the collector 32, the heat exchange tube 31 may not be completely fitted with the collector 32, which may also cause an unstable connection between the heat exchange tube 31 and the collector 32.

[0067] Based on this, the present application connects the collector 32 to the end of the heat exchange tube 31, and then connects the collector 32 and the side wall or outer wall of the heat exchange tube 31 through the connector 33, so that the heat exchange tube 31 and the collector 32 can fit well with each other through the surface of the end, and then the connection between the heat exchange tube 31 and the collector 32 is achieved by injection molding and coating the connector 33. In this way, the connection stability between the heat exchange tube 31 and the collector 32 can be improved.

[0068] In some embodiments, the current collector 32 and the heat exchange tube 31 are made of different materials. Thus, by injection molding the connector 33, a stable connection between the current collector 32 and the heat exchange tube 31 can be achieved.

[0069] In some embodiments, the current collector 32 is made of plastic, and the heat exchange tubes 31 are made of metal. Specifically, the current collector 32 is made of plastic, and the heat exchange tubes 31 are made of metal. Metal heat exchange tubes can more efficiently exchange heat for the heat exchange medium within the heat exchange channel 311.

[0070] In some embodiments, the connecting member 33 is an annular structure and is disposed around the outer circumference of the heat exchange tube 31 and the current collector 32 .

[0071] Specifically, the connector 33 is configured as an annular structure. After the current collector 32 is connected to the heat exchange tube 31, the connector 33 is placed around the periphery of the connection between the heat exchange tube 31 and the current collector 32. On the one hand, the connector 33 can cover the connection between the heat exchange tube 31 and the current collector 32, providing a certain degree of protection. On the other hand, the connector 33 can also achieve a fixed connection between the current collector 32 and the heat exchange tube 31, completing the assembly of the two.

[0072] In some embodiments, the connecting element 33 is configured as an injection-molded ring.

[0073] After the current collector 32 is connected to the heat exchange tube 31 , the injection ring can be injected onto the outer periphery of the heat exchange tube 31 and the current collector 32 through the overmolding process to achieve the connection between the heat exchange tube 31 and the current collector 32 .

[0074] The materials for the current collector 32, heat exchange tubes 31, and connectors 33 can be made of materials with similar melting points and are compatible. This allows the connectors 33 to be injection-molded between the current collector 32 and the heat exchange tubes 31. Furthermore, once melted, the connectors 33 fill the gap between the current collector 32 and the heat exchange tubes 31, further enhancing the tightness of the connection and making the connection more stable.

[0075] In some embodiments, the current collector 32 includes a main body 323 and a plurality of support members 322 . The main body 323 is coupled to the heat exchange tube 31 , and the support members 322 are spaced apart along the circumference of the main body 323 .

[0076] When the current collector 32 is connected to the heat exchange tube 31, the support member 322 extends into the heat exchange channel 311 along the preset direction a, thereby supporting the heat exchange channel 311 at the end of the heat exchange tube 31, making the structure at the end of the heat exchange tube 31 more stable and the surface more flat. In this way, the heat exchange tube 31 can be well attached to the current collector 32, improving the stability of the connection between the two.

[0077] In addition, the multiple support members 322 arranged at intervals can form multi-point support for the heat exchange channel 311, thereby improving support stability.

[0078] In some embodiments, when the main body 323 is coupled to the heat exchange tube 31 , at least one support member 322 extends into the heat exchange channel 311 .

[0079] Furthermore, when the main body 323 is coupled to the heat exchange tube 31, the two support members 322 extend into the heat exchange channel 311. The support members 322 can support the heat exchange channel 311. Therefore, in actual application, the specific number of support members 322 extending into the heat exchange channel 311 can be set according to the actual size of the heat exchange channel 311 and actual conditions, and will not be detailed here.

[0080] Through the above structure, the support member 322 extends into the heat exchange channel 311 to provide more stable support for the heat exchange channel 311 .

[0081] In some embodiments, each support member 322 has a support surface, and the support surface abuts against the inner wall of the heat exchange tube 31 .

[0082] Specifically, each support member 322 can be set to a sheet structure. When the heat exchange tube 31 is connected to the connecting part 324, each support member 322 with a sheet structure extends into the heat exchange channel 311, and the support surface is the surface of each support member 322 and the inner wall of the heat exchange channel 311 facing each other, so that the support surface can fit with the inner wall of the heat exchange channel 311 and can better play a supporting role.

[0083] Thus, the support member 322 can be in more stable contact with the inner wall of the heat exchange tube 31 through the support surface, thereby improving the support stability of the support member 322 for the heat exchange flow channel 311.

[0084] Please also refer to Figure 5 and Figure 6In some embodiments, the main body 323 includes a first connecting portion 324 and a second connecting portion 325 formed on the surface of the first connecting portion 324, and a step surface 326 is formed between the first connecting portion 324 and the second connecting portion 325. One end of the connecting member 33 is covered on the step surface 326, and the other end is covered on the outer periphery of the heat exchange tube 31.

[0085] Specifically, the end surface of the heat exchange tube 31 is abutted against the first connection portion 324 , so that the support member 322 extends into the heat exchange channel 311 , thereby forming support for the heat exchange channel 311 .

[0086] Thus, the first connection portion 324 can realize the connection between the current collector 32 and the heat exchange tube 31 , and the support member 322 is protruded from the second connection portion 325 to support the heat exchange channel 311 of the heat exchange tube 31 .

[0087] Through the above structure, when the connector 33 is connected between the heat exchange tube 31 and the current collector 32, the connector 33 can be respectively wrapped around the outer periphery of the heat exchange tube 31 and the step surface 326, thereby improving the connection stability between the current collector 32 and the connector 33 and the heat exchange tube 31.

[0088] In some embodiments, the first connection portion 324 has a first end surface 327 , the second connection portion 325 is disposed on the first end surface 327 , and the first end surface 327 intersects with the step surface 326 ; wherein the first end surface 327 is used to abut against the end surface of the connection member 33 for limiting position.

[0089] Specifically, the first end surface 327 and the step surface 326 are perpendicular to each other, and the step surface 326 is parallel to the preset direction a, and the first end surface 327 is perpendicular to the preset direction a.

[0090] When connecting the current collector 32 to the heat exchange tube 31, the end face of the heat exchange tube 31 is brought into contact with the end face of the second connecting portion 325, allowing the support member 322 to extend into the heat exchange channel 311, thereby providing support for the heat exchange channel 311. Simultaneously, an injection molding ring is placed around the stepped surface 326 and the outer circumference of the heat exchange tube 31, with the stepped surface 326 and the outer surface of the heat exchange tube 31 both conforming to the inner wall of the injection molding ring.

[0091] Through the above structure, the stepped surface 326 can fit with the inner wall of the connector 33 , thereby improving the connection stability between the current collector 32 and the connector 33 .

[0092] By providing the first end face 327 , a stepped structure is formed between the first end face 327 and the second connecting portion 325 , so that when the connecting member 33 is sleeved on the second connecting portion 325 , a position-limiting fit can be formed between the first end face 327 , thereby improving assembly efficiency.

[0093] In some embodiments, the second connection portion 325 has a second end face 328 at one end facing away from the first connection portion 324, and the second end face 328 abuts against the end face of the heat exchange tube 31; each support member 322 is protrudingly arranged on the second end face 328, and the supporting surface of each support member 322 is staggered from the end face of the heat exchange tube 31 so as to fit with the inner wall of the heat exchange tube 31.

[0094] Thus, the supporting surface of the support member 322 can fit with the inner wall of the heat exchange tube 31 , thereby more stably supporting the inner wall of the heat exchange tube 31 and making the connection between the heat exchange tube 31 and the current collector 32 more stable.

[0095] like Figure 7 As shown, in some embodiments, the current collector 32 also includes a wrapping portion 329 arranged on the first connecting portion 324, the wrapping portion 329 is arranged around the outer periphery of the second connecting portion 325, and a limiting groove 330 is formed between the wrapping portion 329 and the second connecting portion 325, and the limiting groove 330 is used to clamp the heat exchange tube 31.

[0096] Specifically, the wrapping portion 329 is configured as a collar structure, which surrounds the outer periphery of the second connecting portion 325 and is spaced apart from the second connecting portion 325, thereby forming a limiting groove 330. The width of the limiting groove 330 matches the wall thickness of the heat exchange tube 31.

[0097] Thus, when the current collector 32 is connected to the heat exchange tube 31, the port of the heat exchange tube 31 can be clamped into the limiting groove 330, thereby achieving port fixation. At the same time, the wrapping portion 329 wraps around the outer periphery of the port of the heat exchange tube 31.

[0098] Furthermore, the connector 33 is arranged around the outer periphery of the wrapping portion 329. When the connector 33 is fixed by the overmolding process, the wrapping portion 329 can prevent the overflow of glue into the heat exchange tube 31 or the inner part of the current collector 32 during the injection molding process, thereby providing a certain degree of protection.

[0099] In some embodiments, the battery cell assembly includes a plurality of battery cells 20 , a plurality of thermal management components 30 are provided, and the plurality of battery cells 20 are arranged in a plurality of rows, with the battery cells 20 in each row being provided between two adjacent thermal management components 30 .

[0100] Furthermore, the battery cell 20 includes a top surface and a bottom surface that are relatively arranged, and a side surface that is arranged between the top surface and the bottom surface. The side surface includes a first side surface that is relatively arranged and a second side surface that connects the two first side surfaces. The area of ​​the first side surface is greater than the area of ​​the second side surface. The thermal management component 30 is at least partially arranged between the first side surfaces of two adjacent battery cells 20.

[0101] Specifically, the first side surface is the larger surface of the battery cell 20, and each thermal management component 30 is at least partially disposed between the larger surfaces of two adjacent battery cells 20. This increases the contact area between the thermal management component 30 and the battery cell 20, effectively improving heat exchange efficiency.

[0102] It is understood that the outer surface shape of the heat exchange tube 31 can be modified to suit the shape of the battery cell 20. For example, if the battery cell 20 is a rectangular parallelepiped, the heat exchange tube 31 can be a straight tube with a flat outer surface parallel to the outer surface of the battery cell 20. The outer surface of the heat exchange tube 31 contacts the outer surface of the battery cell 20, effectively increasing the contact area. For another example, if the battery cell 20 is cylindrical, the heat exchange tube 31 can be wavy to match the shape of the battery cell 20.

[0103] Of course, the outer surface of the heat exchange tube 31 may not completely match and fit the outer surface of the battery cell 20 .

[0104] Based on the same concept as the above-mentioned battery 100, the present application also provides an electrical device, including the above-mentioned battery 100, and the battery 100 is used to provide electrical energy.

[0105] According to one or more embodiments, two current collectors 32 are first disposed along a predetermined direction a at opposite ends of the heat exchange tube 31. The end faces of the heat exchange tube 31 abut against the end faces of the second connection portions 325, and the support members 322 extend into the heat exchange channel 311, thereby supporting the heat exchange channel 311. Simultaneously, the end faces of the heat exchange tube 31 abut against the end faces of the second connection portions 325.

[0106] Furthermore, the connecting piece 33 is arranged around the outer periphery of the second connecting part 325 and the heat exchange tube 31, and the connecting piece 33 is injection-molded to the connection position of the second connecting part 325 and the heat exchange tube 31 through the overmolding process. While connecting the second connecting part 325 and the heat exchange tube 31, it can also seal the connection gap between the second connecting part 325 and the heat exchange tube 31.

[0107] At this point, the thermal management component 30 is assembled. During use, the thermal management component 30 is first placed in the housing 10, with the surface of the heat exchange tube 31 aligned with the large surface of the battery cell 20. A heat exchange medium is introduced through the opening 321 of the current collector 32 on one side, flows through the heat exchange channel 311, and then exits through the opening 321 of the current collector 32 on the other side. During this process, the heat exchange medium exchanges heat with the large surface of the battery cell 20, thereby regulating the temperature of the battery cell 20.

[0108] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery device, characterized in that: include: The box body has a receiving cavity inside; A battery cell assembly is disposed in the accommodating cavity; and a thermal management component, the thermal management component accommodating a heat exchange medium and configured to regulate a temperature of the battery cell assembly; Wherein, the thermal management component includes: A heat exchange tube, wherein the heat exchange tube has a plurality of heat exchange channels therein, the heat exchange channels are configured to conduct the heat exchange medium, and the ends of the heat exchange tube are ports of the heat exchange channels; a current collector, connected to the end of the heat exchange tube and in communication with the port, the current collector being configured to divert the heat exchange medium to the plurality of heat exchange channels and to collect the heat exchange medium in the plurality of heat exchange channels; and A connecting piece is provided between the heat exchange tube and the current collector, and the connecting piece is injection-molded and coated to connect the heat exchange tube and the current collector.

2. The battery device according to claim 1, wherein: The material of the current collector and the heat exchange tube are different.

3. The battery device according to claim 1, wherein: The current collector is configured to be plastic, and the heat exchange tube is configured to be metal.

4. The battery device according to claim 1, wherein: The connecting piece is annular and is arranged around the outer periphery of the heat exchange tube and the current collector.

5. The battery device according to any one of claims 1 to 4, characterized in that: The current collector includes a main body and a plurality of support members. The main body is connected to the heat exchange tube, and the support members are arranged at intervals along the circumference of the main body.

6. The battery device according to claim 5, characterized in that When the main body is connected to the heat exchange tube, at least one of the support members extends into the heat exchange channel.

7. The battery device according to claim 6, characterized in that When the main body is connected to the heat exchange tube, the two support members extend into the heat exchange channel.

8. The battery device according to claim 5, characterized in that Each of the support members has a support surface, and the support surface abuts against the inner wall of the heat exchange tube.

9. The battery device according to claim 5, characterized in that The main body includes a first connecting portion and a second connecting portion formed on the surface of the first connecting portion. A step surface is formed between the first connecting portion and the second connecting portion. One end of the connecting member is covered on the step surface, and the other end is covered on the outer periphery of the heat exchange tube.

10. The battery device according to claim 9, characterized in that The first connecting portion has a first end surface, the second connecting portion is disposed on the first end surface, and the first end surface intersects the step surface; Wherein, the first end face is used to abut against the end face of the connecting member for limiting position.

11. The battery device according to claim 9, characterized in that The second connecting portion has a second end face at one end facing away from the first connecting portion, and the second end face abuts against the end face of the heat exchange tube; each of the support members is protrudingly arranged on the second end face, and the supporting surface of each of the support members is staggered from the end face of the heat exchange tube so as to fit with the inner wall of the heat exchange tube.

12. The battery device according to claim 9, wherein: The current collector further includes a wrapping portion disposed on the first connecting portion. The wrapping portion is disposed around the outer circumference of the second connecting portion and is spaced apart from the second connecting portion to form a limiting groove, and the limiting groove is used to clamp the heat exchange tube.

13. The battery device according to claim 1, wherein: The battery cell assembly includes a plurality of battery cells. The thermal management components are provided in plurality. The plurality of battery cells are arranged in a plurality of rows, and the battery cells in each row are provided between two adjacent thermal management components.

14. The battery device according to claim 13, wherein: The battery cell includes a top surface and a bottom surface arranged opposite to each other, and a side surface arranged between the top surface and the bottom surface, the side surface includes a first side surface arranged opposite to each other and a second side surface connecting the two first side surfaces, the area of ​​the first side surface is larger than the area of ​​the second side surface, and the thermal management component is at least partially arranged between the first side surfaces of two adjacent battery cells.

15. An electrical device, characterized in that: The battery device comprises the battery device according to any one of claims 1 to 14, wherein the battery device is used to provide electrical energy.

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