Battery device and electric device

Abstract

The application relates to the battery technical field, and provides a battery device and a power utilization device, the battery device comprises a box body, a battery monomer assembly and a heat exchange assembly, the battery monomer assembly is arranged in the box body; the heat exchange assembly is an integrated structure, comprising an injection molding body, a heat exchange pipeline and a connecting piece, the injection molding body is arranged in the box body; the heat exchange pipeline comprises a heat exchange part arranged in the injection molding body, at least part of the battery monomer assembly is arranged on the injection molding body and can exchange heat with the heat exchange part; the connecting piece has a first end part and a second end part, the first end part is arranged in the injection molding body, and the second end part is connected with the box body. The application can reduce the amount of structural glue, reduce the cost, meanwhile, the overall structural strength and the heat conduction stability of the heat exchange assembly are enhanced, so that the reliability of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] Existing battery devices typically use heat exchange tubes to cool individual battery cells, and achieve fixation and heat conduction by filling a large amount of structural adhesive between the heat exchange tubes and the base plate of the casing. However, under long-term thermal cycling and vibration environments, the adhesive is prone to aging and cracking, leading to heat exchange failure and reducing the reliability of the battery device. Utility Model Content

[0003] In view of the above-mentioned technical problems, the purpose of this application is to provide a battery device and an electrical device, which aims to solve the problem of poor reliability in existing battery devices.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, embodiments of this application provide a battery device, comprising:

[0006] Box;

[0007] The battery cell assembly is housed inside the casing;

[0008] The heat exchange assembly is an integrally molded structure, including an injection-molded body, a heat exchange pipe, and a connector. The injection-molded body is located inside the housing. The heat exchange pipe includes a heat exchange portion located in the injection-molded body. At least a portion of the battery cell assembly is located on the injection-molded body and is capable of exchanging heat with the heat exchange portion. The connector has a first end and a second end. The first end is located in the injection-molded body, and the second end is connected to the housing.

[0009] In the above technical solution, the heat exchange portion of the heat exchange pipe and the first end of the connector are injection molded into the injection molded body to form a stable integrated structure. The second end of the connector is then connected to the housing, achieving a secure connection between the components. The heat exchange assembly in this embodiment, by adopting an integrated injection molding design, can reduce the amount of structural adhesive used, enhance the overall structural strength and thermal conductivity stability, and reduce the risks of aging and cracking associated with traditional structural adhesives, thereby improving the reliability of the battery device.

[0010] In some embodiments, the injection molding body includes a first body and a second body stacked in phase, the first body being disposed between the battery cell assembly and the second body; the heat exchange portion is a hollow flow channel formed in the first body and / or the second body; and a first end is disposed in the first body and / or the second body.

[0011] In the above technical solution, the injection-molded body is divided into a first body and a second body. The first body directly supports the battery cell assembly, eliminating the need for additional support structures. Furthermore, the first body and / or the second body are integrally molded during the injection molding process to form a hollow flow channel enclosed by their own walls, serving as a heat exchange section. This heat exchange section becomes an inherent structure of the injection-molded body, significantly improving its reliability and sealing performance. Additionally, the first end of the connector can be injection-molded into the first body and / or the second body, further enhancing the overall structural stability.

[0012] In some embodiments, the first body and the second body are welded together.

[0013] In the above technical solution, by using welding to connect the first body and the second body, the contact surfaces between the two can be rapidly pressed and cooled after melting, forming a high-strength, high-sealing integral injection-molded body structure. This welding process eliminates the need for structural adhesives or additional fasteners, improving assembly efficiency and sealing reliability, and reducing the risks of adhesive aging, cracking, and fastener loosening.

[0014] In some embodiments, the injection-molded body has a first surface that carries a battery cell assembly, the first surface having an opening corresponding to at least a portion of the heat exchange portion.

[0015] In the above technical solution, the open design allows the heat exchange part to be directly exposed below the battery cell module, shortening the heat conduction path from the battery cell module to the heat exchange part and improving heat exchange efficiency and temperature uniformity.

[0016] In some embodiments, the end of the heat exchange portion facing the battery cell assembly is lower than the first surface.

[0017] In the above technical solution, by making the top of the heat exchange section lower than the first surface, the battery cell assembly can contact the first surface made of insulating material without contacting the heat exchange pipe. This eliminates the need for additional bottom insulating strips to achieve reliable electrical isolation, reduces the number of parts, simplifies the battery device structure, and improves assembly efficiency and reliability.

[0018] In some embodiments, the height difference between the first surface and the heat exchange portion toward the end of the battery cell assembly is 0.5 mm to 0.8 mm.

[0019] In the above technical solution, by limiting the height difference between the first surface and the heat exchange part, it can ensure that the injection molded body retains sufficient wall thickness in the heat exchange area to provide reliable electrical insulation performance and structural strength, meet electrical specifications, effectively control the length of the heat conduction path, maintain high heat exchange efficiency, and reduce the problem of uneven heat exchange temperature caused by excessive opening height.

[0020] In some embodiments, multiple connectors are provided, and the multiple connectors are spaced apart and arranged around the outer side of the injection-molded body.

[0021] In the above technical solution, by arranging multiple connectors at intervals around the outer side of the injection-molded body, a circumferential multi-point connection structure can be formed, making the connection between the heat exchange components and the housing more uniformly stressed, thus improving the overall connection strength and vibration resistance. Furthermore, the outer arrangement of the connectors does not interfere with the internal flow channels and the arrangement of the battery cells, which is beneficial for improving space utilization.

[0022] In some embodiments, the connector includes a connecting frame surrounding the outer side of the injection-molded body.

[0023] The above technical solution, by designing the connector as a single continuous connecting frame structure, embeds its first end into the outer side of the injection-molded body during the injection molding process, achieving continuous circumferential force distribution and improving the connection strength and vibration resistance between the heat exchange components and the housing. Furthermore, the outer arrangement of the connecting frame does not interfere with the internal flow channels and battery cell assembly layout, which is beneficial for improving space utilization. In addition, the embodiments of this application reduce the number of connectors, simplifying the assembly process. At the same time, the overall frame facilitates rapid alignment and connection with the housing, which is beneficial for automated production and further improves the manufacturing efficiency and long-term operational stability of the battery device.

[0024] In some embodiments, the housing includes a frame, and the second end is connected to the frame.

[0025] In the above technical solution, the second end of the connector can be directly connected to the box frame, which simplifies the assembly process and improves assembly efficiency.

[0026] In some embodiments, the injection molding body is provided with connectors on both sides along the first direction; the frame includes a first bracket located on both sides of the injection molding body along the first direction, and the first bracket is provided with an adapter, which is connected to the second end of the connector in a one-to-one correspondence.

[0027] In the above technical solution, by setting up an adapter, the natural frequency of the battery device structure can be increased, thereby improving the structural stability and strength of the battery device structure; the double-sided connection structure makes the heat exchange components bear the force evenly, improving the vibration resistance and effectively preventing displacement or loosening during vibration.

[0028] In some embodiments, the connectors and / or adapters are metal.

[0029] In the above technical solution, the use of metal components in the connectors and adapters can improve structural strength, ensure stable and reliable connection, and reduce the risk of connection failure.

[0030] In some embodiments, at least one first bracket is provided with a reinforcement on the outside of the battery cell assembly, and the reinforcement is connected to an adapter on the corresponding side.

[0031] In the above technical solution, by adding a structural reinforcement between the first support and the adapter, the overall structural strength and deformation resistance between the first support and the adapter can be enhanced, ensuring that the heat exchange components maintain stable and reliable connection under conditions such as vibration and thermal cycling. Furthermore, since the reinforcement is located on the outside of the first support, it does not occupy internal space of the housing, providing more layout space for the battery cells and helping to improve the energy density of the battery device.

[0032] In some embodiments, the housing includes a base plate disposed at the bottom of the injection-molded body, and an adapter is connected between the outer side of the base plate and the first bracket.

[0033] In the above technical solution, the base plate located at the bottom of the injection-molded body, connected to the first bracket via an adapter, provides stable support for the injection-molded body and effectively transfers the load to the housing frame, improving overall connection rigidity and vibration resistance. Simultaneously, by using the injection-molded body, the buffer foam between the base plate and the battery cell assembly in existing technologies can be eliminated, simplifying the device structure, reducing assembly complexity, and freeing up internal space within the housing, thus contributing to increased energy density of the battery device.

[0034] In some embodiments, the injection body has a second surface that abuts against a base plate, and the base plate has a third surface that abuts against the second surface, the shape of the second surface being the same as the shape of the third surface.

[0035] In the above technical solution, conformal injection molding process can be used to make the second surface of the injection body and the third surface of the base plate have the same shape, so as to achieve a tight fit between the two, increase the effective contact area between the injection body and the base plate, make the support force distribution more uniform, and improve the installation stability and vibration resistance of the heat exchange component.

[0036] In some embodiments, the injection molding body is provided with connectors on both sides along the second direction; the frame includes second supports located on both sides of the injection molding body along the second direction, the second supports are arranged in a surrounding manner with the first supports, the second supports are connected one-to-one to the second ends of the connectors, and the first direction intersects the second direction.

[0037] In the above technical solution, based on the connection in the first direction, a connection constraint in the second direction is further implemented to form a multi-directional limiting stable support system, improving the overall vibration resistance and installation reliability of the heat exchange components. Furthermore, the second bracket and the connecting parts eliminate the need for adapters, adopting a direct connection method, which effectively simplifies the structure, reduces the number of parts, and improves assembly efficiency.

[0038] In some embodiments, the connector includes a connecting frame, which includes a first frame located on both sides of the injection molding body along a first direction and a second frame located on both sides of the injection molding body along a second direction. Both the first frame and the second frame have a first end and a second end. The second end of the first frame is connected to the first bracket in a one-to-one correspondence via an adapter, and the second bracket is connected to the second end of the second frame in a one-to-one correspondence.

[0039] In the above technical solution, the connector adopts a connecting frame structure. The first frame is connected to the first bracket via an adapter, which can increase the structural natural frequency of the battery device and improve the structural stability and strength of the battery device. The second frame is directly connected to the second bracket, simplifying the structure and improving assembly efficiency. The first end of the connecting frame is integrally formed with the injection molding body during the injection molding process, enhancing the circumferential stiffness and deformation resistance of the heat exchange component.

[0040] In some embodiments, one of the second borders has a first clearance notch and a second clearance notch;

[0041] The heat exchange pipe includes an inlet section and an outlet section connected to both ends of the heat exchange section. The inlet section passes through the outside of the second support on the corresponding side from the first clearance notch, and the outlet section passes through the outside of the second support on the corresponding side from the second clearance notch.

[0042] In the above technical solution, by designing avoidance gaps on the second frame to accommodate the inlet and outlet sections of the heat exchange pipes, exit channels can be provided for the inlet and outlet sections, reducing the risk of interference between the pipes and other structural components, and facilitating connection with the external heat exchange medium circulation system to achieve heat exchange. Furthermore, the inlet and outlet sections are centrally located on one side frame, simplifying external pipe connections and improving assembly efficiency and maintainability.

[0043] Secondly, embodiments of this application also provide an electrical device, including: the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0044] 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, specific embodiments of this application are given below. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments 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.

[0046] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0047] Figure 2 An exploded view of the battery device provided in the embodiments of this application;

[0048] Figure 3 This is a schematic diagram of the structure of the box provided in an embodiment of this application;

[0049] Figure 4 This is a top view of the box structure provided in an embodiment of this application;

[0050] Figure 5 for Figure 4 A structural cross-sectional view at point AA;

[0051] Figure 6 for Figure 5 A magnified view of section B;

[0052] Figure 7 This is one of the connection diagrams of the heat exchange assembly provided in the embodiments of this application;

[0053] Figure 8 This is the second schematic diagram of the connection of the heat exchange component provided in the embodiments of this application;

[0054] Figure 9 This is a schematic diagram of the structure of the heat exchange component provided in an embodiment of this application.

[0055] The following are the labeling elements in the figure:

[0056] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;

[0057] 11. Box body; 111. First box body; 112. Second box body; 113. Frame; 1131. First support;

[0058] 1132. Adapter; 1133. Reinforcing component; 1134. Second bracket; 114. Base plate;

[0059] 12. Battery cell assembly; 121. Battery cell;

[0060] 13. Heat exchanger assembly; 131. Injection molding body; 1311. First body; 1312. Second body;

[0061] 1313, First surface; 1314, Opening; 132, Heat exchange pipe; 1321, Heat exchange section;

[0062] 1322, Import section; 13221, Import connector; 1323, Export section; 13231, Export connector;

[0063] 133. Connector; 1331. First end; 1332. Second end; 1333. First frame;

[0064] 1334. Second border; 1335. First clearance gap; 1336. Second clearance gap. Detailed Implementation

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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).

[0071] 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", "circumferential", etc., 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 do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0072] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the 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.

[0073] In existing battery devices, to achieve effective thermal management of individual battery cells, heat exchange tubes are typically attached to the bottom of the cells. A cooling medium circulates within the heat exchange tubes to remove the heat generated during operation, maintaining temperature uniformity and reliability. To reliably fix the heat exchange tubes inside the battery housing and ensure a good heat conduction path between them and the battery cells, current technology generally relies on filling a large amount of thermally conductive structural adhesive between the heat exchange tubes and the housing base plate. While this adhesive bonding process achieves a certain degree of fixation and thermal conductivity, in practical applications, the structural adhesive is prone to aging, embrittlement, and even cracking under the high temperature, high humidity, frequent thermal cycling, and mechanical vibration conditions experienced by the battery cells during long-term operation. This can lead to loosening of the heat exchange tubes, thermal contact failure, and affect the reliability of the battery device.

[0074] Based on this, this application provides an integrally injection-molded heat exchange assembly. By injection molding the heat exchange portion of the heat exchange pipe and the first end of the connector into the injection-molded body, a stable integrated structure is formed. The second end of the connector is then connected to the battery housing, achieving a secure connection between the components. This application's heat exchange assembly, through its integral injection molding design, reduces the amount of structural adhesive used, lowers costs, and simultaneously enhances the overall structural strength and thermal conductivity stability, thereby improving the reliability of the battery device.

[0075] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0076] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0077] Reference Figure 1 As shown, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, the battery device 100 can serve as the operating power source for vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of vehicle 1000 during starting, navigation, and driving.

[0078] In some embodiments, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0079] Reference Figure 2 As shown, the battery device mentioned in the embodiments of this application may include one or more battery cell assemblies 12 for providing voltage and capacity. The battery cell assembly 12 may include a plurality of battery cells 121, which are connected in series, parallel, or mixed connection via a busbar.

[0080] In some embodiments, the battery cell assembly 12 is typically formed by arranging a plurality of battery cells 121.

[0081] As an example, the battery cell assembly 12 can be a battery module, which is formed by arranging and fixing multiple battery cells 121 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 121 together with cable ties.

[0082] In some embodiments, the battery device may be a battery pack, which includes a housing 11 and one or more battery cell assemblies 12, the battery cell assemblies 12 being housed in the housing 11.

[0083] As an example, the battery cell assembly 12 can be a battery module, and the battery cell assembly 12 can be housed in the housing 11 by fixing the battery module in the housing 11.

[0084] As an example, the battery cell assembly 12 can also be housed in the housing 11 by directly fixing multiple battery cells 121 to the housing 11.

[0085] As an example, the housing 11 may include a first housing 111 and a second housing 112. The first housing 111 and the second housing 112 are fastened together to form a closed space inside the housing 11 to house the battery cell assembly 12. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 111 may be a top cover or a bottom plate.

[0086] As an example, the housing 11 may include a top cover, a frame 113, and a bottom plate 114. The top cover and the bottom plate 114 are respectively connected to the frame 113, so that the interior of the housing 11 forms a closed space to accommodate the battery cell assembly 12.

[0087] In some embodiments, the housing 11 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 11 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 11 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0088] 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.

[0089] In this embodiment, the battery cell 121 can be a secondary battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. The battery cell 121 can be flat, cuboid, or other shapes.

[0090] The battery cell 121 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0091] In some embodiments, refer to Figures 2 to 9As shown, this application provides a battery device, including: a housing 11, a battery cell assembly 12, and a heat exchange assembly 13. The battery cell assembly 12 is disposed within the housing 11; the heat exchange assembly 13 is an integrally molded structure, including an injection-molded body 131, a heat exchange pipe 132, and a connector 133. The injection-molded body 131 is disposed within the housing 11; the heat exchange pipe 132 includes a heat exchange portion 1321 disposed within the injection-molded body 131, at least a portion of the battery cell assembly 12 is disposed on the injection-molded body 131, and is capable of exchanging heat with the heat exchange portion 1321; the connector 133 has a first end 1331 and a second end 1332, the first end 1331 being disposed within the injection-molded body 131, and the second end 1332 being connected to the housing 11.

[0092] The housing 11 serves as the outer casing of the entire battery device, providing a protective and sealed environment for components such as the battery cell assembly 12 and the heat exchange assembly 13. Optionally, the housing 11 can be made of materials with a certain strength, such as steel or aluminum.

[0093] The battery cell assembly 12 is installed inside the housing 11. The battery cell assembly 12 may include a plurality of battery cells 121 arranged in an array. The battery cells 121 are used to store and release electrical energy. At least a portion of the battery cell assembly 12 is disposed on the injection molding body 131. This means that the battery cell assembly 12 may be entirely disposed on the injection molding body 131, or a portion of the battery cell assembly 12 may be disposed on the injection molding body 131, and another portion may be disposed on the second end 1332 of the connector 133.

[0094] The heat exchange assembly 13 may include three integrally injection-molded parts: an injection-molded body 131, a heat exchange pipe 132, and a connector 133. Specifically, the injection-molded body 131 may be made of engineering plastic with good thermal conductivity and certain mechanical strength, serving both as the covering / supporting matrix for the heat exchange portion 1321 of the heat exchange pipe 132 and directly supporting the battery cell assembly 12, thus achieving integrated support and heat conduction.

[0095] Optionally, the injection-molded body 131 can be plate-shaped and adapted to the outline of the box 11. The injection-molded body 131 can be made of engineering plastics such as polyphenylene sulfide (PPS) and polyamide (PA).

[0096] The heat exchange portion 1321 of the heat exchange pipe 132 is embedded inside the injection-molded body 131 and encased in injection molding material. Its position is fixed, reducing the risk of displacement and ensuring heat exchange stability. For example, during heat exchange, the cooling medium (such as water-glycol) flows inside the pipe. The heat generated by the battery cell assembly 12 is conducted to the injection-molded body 131 in contact with it, and then conducted through the injection-molded body 131 to the heat exchange portion 1321 of the internally embedded heat exchange pipe 132, where it is carried away by the cooling medium flowing inside the pipe.

[0097] As an example, heat exchange pipe 132 may include a serpentine heat exchange pipe, such as Figure 4 As shown. Of course, heat exchange pipe 132 can also be used for... Figure 9 The mountain-shaped pipe shown in this application embodiment does not impose any special restrictions on the shape of the heat exchange pipe 132.

[0098] As an example, such as Figure 4 As shown, multiple heat exchange pipes 132 can be connected in parallel to form a multi-loop heat exchange pipe, thereby improving heat exchange efficiency.

[0099] The connector 133 has a first end 1331 and a second end 1332. During injection molding, the first end 1331 of the connector 133 is pre-positioned as an insert and firmly connected to the injection-molded body 131 to form a mechanical anchor point. The second end 1332 of the connector 133 extends out of the injection-molded body 131 and can be connected to the housing 11 structure by means of bolt connection, snap connection, or welding, thereby stably installing the entire heat exchange assembly 13 inside the housing 11. It can be understood that the first end 1331 is the part of the connector 133 embedded in the injection-molded body 131, and the second end 1332 is the other part of the connector 133 extending out of the injection-molded body 131.

[0100] Optionally, the connector 133 may include structures such as a connecting bracket, a connecting plate, and a connecting frame. The connector 133 may be made of metal materials such as steel or aluminum.

[0101] As an example, during the injection molding process, the extruded and bent serpentine heat exchange pipe can be used as the main cooling channel, combined with the steel or aluminum connector 133, and placed into the injection mold as an insert. The entire assembly is then injection molded using high-temperature molten engineering plastic. During the injection molding process, the molten plastic fully fills the gaps around the serpentine heat exchange pipe and achieves a tight bond with the connector 133. After cooling and solidification, it forms an integrated composite structure of "injection body 131, heat exchange pipe 132, and connector 133", reducing the amount of structural adhesive used. At the same time, the injection body 131 itself is insulated and in contact with the battery cell assembly 12, achieving reliable electrical isolation. In addition, the metal connector not only serves as the connection interface with the battery housing 11 but also as a structural reinforcement, significantly improving the overall bending stiffness and torsional performance of the heat exchange assembly 13.

[0102] Therefore, the battery device provided in this application embodiment, by using injection molding technology to form an integrated heat exchange component, can reduce the amount of structural adhesive used, reduce costs, and at the same time enhance the overall structural strength and thermal conductivity stability, reduce the risks of aging and cracking that exist in traditional structural adhesives, thereby improving the reliability of the battery device.

[0103] In some embodiments, the first end 1331 of the connector 133 is provided with a through hole and is connected to the injection molding body 131. Specifically, during the injection molding process, the material of the injection molding body 131 melts and fills the through hole, thereby forming a reliable connection.

[0104] In some embodiments, refer to Figure 7 As shown, the injection molding body 131 includes a first body 1311 and a second body 1312 stacked in phase. The first body 1311 is disposed between the battery cell assembly 12 and the second body 1312. The heat exchange portion 1321 is a hollow flow channel formed in the first body 1311 and / or the second body 1312. The first end 1331 is disposed in the first body 1311 and / or the second body 1312.

[0105] The injection-molded body 131 is divided into two parts: a first body 1311 and a second body 1312. The first body 1311 is located on top and is used to directly support the battery cell assembly 12. The upper surface of the first body 1311 can be designed as a mounting surface that matches the bottom of the battery cell assembly 12, ensuring good contact and heat conduction. At the same time, it eliminates the need for additional brackets or support plates in traditional technologies, simplifying the assembly structure. The second body 1312 is located on the bottom. The first body 1311 and / or the second body 1312 can be integrally molded during the injection molding process to form a hollow flow channel surrounded by walls, serving as the heat exchange part 1321 of the heat exchange pipe 132. It is understood that this flow channel is not an independent pipe that is inserted or glued later, but is formed directly by injection molding. It is part of the injection-molded body itself, improving reliability and sealing.

[0106] As an example, the injection-molded body 131 can be an injection-molded cold plate, the first body 1311 can be an upper plate, and the second body 1312 can be a lower plate. That is, the injection-molded cold plate adopts a split double-plate structure, including an upper plate and a lower plate. Optionally, both the upper plate and the lower plate can be made of engineering plastics and formed by injection molding.

[0107] As an example, the upper plate can be a flat structure with a high degree of flatness on its upper surface, which can be directly used to fix the battery cell module 12. Optionally, the surface roughness Ra of the upper plate is ≤3.2μm. The upper plate can be made of plastic and combined with injection molding process, with a micron-level textured structure on the surface. This not only reduces the processing difficulty and polishing cost, but also helps to improve the mechanical bonding force between the structural adhesive or double-sided adhesive and the bottom surface of the battery cell module 12, enhances the bonding reliability, and reduces the risk of debonding.

[0108] The first end 1331 of the connector 133 can be embedded in the first body 1311, the second body 1312, or the area where the two meet, to achieve firm anchoring during injection molding, thereby ensuring a reliable connection between the entire heat exchange assembly 13 and the housing 11 structure.

[0109] As an example, the first end 1331 of the connector 133 is embedded in the upper first body 1311, and a hollow flow channel is formed in the lower second body 1312 as a heat exchange part 1321.

[0110] In some embodiments, refer to Figure 7 As shown, the first body 1311 and the second body 1312 are welded together.

[0111] Specifically, the first body 1311 and the second body 1312 can be injection molded separately. The first body 1311 is used for the installation of the battery cell assembly 12, while the second body 1312 is used for the precision molding of the internal hollow flow channel. After injection molding, the two bodies can be melted at the contact interface and rapidly pressed and cooled by ultrasonic welding or other methods to form a reliable connection with high strength and high sealing performance. This welding process eliminates the need for structural adhesives or additional fasteners (such as bolts), improving assembly efficiency and sealing reliability, and reducing the risks of adhesive aging, cracking, and fastener loosening.

[0112] In some embodiments, refer to Figure 6 As shown, the injection-molded body 131 has a first surface 1313 that supports the battery cell assembly 12, and the first surface 1313 has an opening 1314 corresponding to at least a portion of the heat exchange portion 1321.

[0113] The first surface 1313 refers to the upper surface of the injection-molded body 131, which serves as the mounting surface for supporting the battery cell assembly 12. It has an opening 1314 corresponding to the heat exchange section 1321. The design of the opening 1314 allows the heat exchange section 1321 to be directly exposed below the battery cell assembly 12, shortening the heat conduction path from the battery cell assembly 12 to the heat exchange pipe 132. Heat can be transferred to the pipe more efficiently through the opening 1314, which helps to improve heat exchange efficiency and temperature uniformity.

[0114] Alternatively, the opening 1314 can be a recessed structure.

[0115] Optionally, thermally conductive structural adhesive can be used to bond the battery cell assembly 12 and the exposed heat exchange portion 1321.

[0116] In some embodiments, refer to Figure 6 As shown, the end of the heat exchange section 1321 facing the battery cell assembly 12 is lower than the first surface 1313.

[0117] The top of the heat exchange section 1321 is lower than the opening 1314, meaning the heat exchange section 1321 is entirely embedded inside the injection-molded body 131, with its highest point lower than the first surface 1313. This design allows the battery cell assembly 12 to contact the first surface 1313 of the injection-molded body 131 without contacting the heat exchange pipe 132. Since the injection-molded body 131 is made of engineering plastics (such as PA, PPS, etc.), it possesses excellent electrical insulation properties. Therefore, this injection-molded body 131 can directly replace the additional bottom insulating strip or insulating film in traditional battery devices, providing structural support and a heat conduction path while achieving reliable electrical isolation, reducing the risk of short circuits between the battery casing and the metal heat exchange pipe, improving the reliability of the battery device, and simultaneously reducing the number of components and simplifying the battery device structure.

[0118] In some embodiments, refer to Figure 6 As shown, the height difference between the first surface 1313 and the end of the heat exchange section 1321 facing the battery cell assembly 12 is 0.5mm to 0.8mm. This height difference can be understood as the distance between the highest point of the heat exchange section 1321 and the first surface 1313.

[0119] During injection molding, the upper surface of the injection body 131 is raised upward, 0.5mm~0.8mm higher than the top of the heat exchange section 1321, forming a micro-convex platform to support the installation of the battery cell assembly 12.

[0120] In this embodiment, the height difference between the first surface 1313 and the top of the heat exchange portion 1321 is set to 0.5mm~0.8mm. This ensures that the injection-molded body 131 retains sufficient wall thickness in the heat exchange area to provide reliable electrical insulation performance and structural strength, meeting electrical specifications. It also effectively controls the length of the heat conduction path, maintains high heat exchange efficiency, and reduces the problem of uneven heat exchange temperature caused by excessively high opening 1314.

[0121] In some embodiments, multiple connectors 133 are provided, and the multiple connectors 133 are spaced apart and arranged around the outer side of the injection body 131. The outer side of the injection body 131 refers to the outer peripheral side surface / circumferential edge of the injection body 131.

[0122] In this embodiment, multiple connectors 133 are spaced apart and arranged around the outer side of the injection-molded body 131, forming a circumferential multi-point connection structure. This makes the connection between the heat exchange component 13 and the housing 11 more uniformly stressed, improving the overall connection strength and vibration resistance. Furthermore, the outer arrangement of the connectors 133 does not interfere with the internal flow channels and the arrangement of the battery cells, which helps to improve space utilization.

[0123] In other embodiments, reference is made to Figure 4As shown, the connector 133 includes a connecting frame that surrounds the outer side of the injection-molded body 131.

[0124] In this embodiment of the application, the connector 133 adopts an integral connecting frame, which surrounds and is embedded in the outer side of the injection-molded body 131 to form a continuous annular insert structure. Optionally, the connecting frame can be made of materials such as steel or aluminum.

[0125] This embodiment of the application designs the connector 133 as a single continuous connecting frame structure. During injection molding, its first end 1331 is embedded in the outer part of the injection-molded body 131, achieving continuous circumferential force and improving the connection strength and vibration resistance between the heat exchange component 13 and the housing 11. Furthermore, the outer arrangement of the connecting frame does not interfere with the internal flow channels and battery cell assembly layout, which is beneficial for improving space utilization. In addition, this embodiment of the application reduces the number of connectors, simplifies the assembly process, and the overall frame facilitates quick alignment and connection with the housing 11, which is beneficial for automated production and further improves the manufacturing efficiency and long-term operational stability of the battery device.

[0126] In some embodiments, refer to Figure 3 and Figure 6 As shown, the box 11 includes a frame 113, and the second end 1332 is connected to the frame 113.

[0127] The frame 113 can serve as the main support structure of the housing 11, used to house and fix the battery cell assembly 12 and the heat exchange assembly 13. The frame 113 can cooperate with the base plate 114 of the housing 11 to form a housing structure with a receiving space. The frame 113 can be used to connect to the second end 1332 of the connector 133 of the heat exchange assembly 13 to achieve fixed installation of the heat exchange assembly 13 within the housing 11.

[0128] As an example, the second end 1332 of the connector 133 can be firmly connected to the box frame 113 through welding processes such as laser welding, gas metal inert gas welding (MIG welding), and friction stir welding, thereby improving vibration resistance.

[0129] The second end 1332 of the connector 133 in this embodiment can be directly connected to the box frame 113, simplifying the assembly process and improving assembly efficiency.

[0130] Reference Figure 3 and Figure 4 As shown, the first direction X intersects the second direction Y. Optionally, the first direction X can be the width direction of the box 11, and the second direction Y can be the length direction of the box 11.

[0131] In some embodiments, refer to Figures 3 to 8As shown, the injection molding body 131 is provided with connectors 133 on both sides along the first direction X; the frame 113 includes a first support 1131 located on both sides of the injection molding body 131 along the first direction X, and the first support 1131 is provided with a converter 1132, and the converter 1132 is connected to the second end 1332 of the connector 133 in a one-to-one correspondence.

[0132] The injection-molded body 131 has connectors 133 on both sides along the first direction X, and the frame 113 of the housing 11 has first supports 1131 on both sides of the injection-molded body 131 at corresponding positions. Each first support 1131 can be fitted with an adapter 1132 at its bottom, which connects one-to-one with the second end 1332 of the corresponding side connector 133, forming a symmetrical, double-sided fixed connection layout. This ensures balanced force on the heat exchange assembly 13, improves vibration resistance, and effectively prevents displacement or loosening during vibration. Furthermore, by setting the adapter 1132 on the first support 1131, the natural frequency of the battery device can be increased, improving the structural stability and strength of the battery device.

[0133] As an example, the adapter 1132 is welded to both the first bracket 1131 and the second end 1332 of the connector 133. Alternatively, fasteners such as screws can be used to achieve a detachable connection.

[0134] As an example, such as Figure 6 and Figure 7 As shown, the adapter 1132 can be made of square steel.

[0135] As an example, such as Figure 8 As shown, the adapter 1132 can be a solid steel pipe.

[0136] In some embodiments, the connector 133 and / or the adapter 1132 are metal parts. Optionally, the metal parts may be made of materials such as stainless steel or aluminum alloy.

[0137] By employing a metal component, the connector 133 in this embodiment of the application can improve the overall bending stiffness and torsional resistance of the injection-molded body 131, thereby enhancing the connection stability and reliability at the connection point with the housing 11 and reducing the risk of connection failure. The adapter 1132, by employing a metal component, can improve structural strength and ensure a stable and reliable connection between the connector 133 and the housing frame 113.

[0138] In some embodiments, refer to Figure 8 As shown, at least one first bracket 1131 is provided with a reinforcing member 1133 on the outer side facing away from the battery cell assembly 12, and the reinforcing member 1133 is connected to the adapter 1132 on the corresponding side.

[0139] Optionally, the reinforcing member 1133 may include a metal reinforcing plate, such as a steel plate or an aluminum plate.

[0140] As an example, the reinforcing member 1133 is welded to both the first bracket 1131 and the adapter 1132. Alternatively, fasteners such as screws can be used to achieve a detachable connection.

[0141] This embodiment of the application improves the structural strength of the support structure by providing a reinforcing member 1133 on the outer side of the first support 1131. The reinforcing member 1133 rigidly connects the first support 1131 and the adapter 1132 externally, forming a triangular force-bearing structure of "adapter 1132, reinforcing member 1133, and first support 1131," thus enhancing the overall structural strength and deformation resistance between the first support 1131 and the adapter 1132. This ensures that the heat exchange assembly 13 maintains a stable and reliable connection under conditions such as vibration and thermal cycling. Furthermore, since the reinforcing member 1133 is located on the outer side of the first support 1131, it does not occupy internal space of the housing 11, providing more layout space for the battery cell assembly 12 and contributing to increased energy density of the battery device.

[0142] In some embodiments, refer to Figures 6 to 8 As shown, the housing 11 includes a base plate 114 disposed at the bottom of the injection-molded body 131, and an adapter 1132 is connected between the outer side of the base plate 114 and the first bracket 1131. The outer side of the base plate 114 refers to the outer peripheral side surface / circumferential edge of the base plate 114.

[0143] Optionally, the base plate 114 may include a metal plate, such as a steel plate or an aluminum plate.

[0144] As an example, the outer side of the base plate 114 is welded to the bottom of the adapter 1132. Alternatively, a detachable connection can be achieved using fasteners such as screws.

[0145] In this embodiment, the base plate 114 structure provides stable support for the injection-molded body 131 and effectively transfers the load to the housing frame 113, improving the overall connection rigidity and vibration resistance. Simultaneously, by providing the injection-molded body 131, the buffer foam between the base plate 114 and the battery cell assembly 12 in the prior art can be eliminated, simplifying the device structure, reducing assembly complexity, and freeing up internal space in the housing 11, which helps to improve the energy density of the battery device.

[0146] In some embodiments, refer to Figure 6 As shown, the injection-molded body 131 has a second surface that abuts against the base plate 114, and the base plate 114 has a third surface that abuts against the second surface. The shape of the second surface is the same as the shape of the third surface.

[0147] The second surface refers to the lower surface of the injection-molded body 131, and the third surface refers to the upper surface of the base plate 114. The lower surface of the injection-molded body 131 and the upper surface of the base plate 114 have the same geometric shape, that is, they adopt a conformal matching design. This structure achieves a tight fit between the injection-molded body 131 and the base plate 114 through the conformal injection molding process, increases the effective contact area between the injection-molded body 131 and the base plate 114, makes the support force distribution more uniform, and improves the installation stability and vibration resistance of the heat exchange component 13.

[0148] In some embodiments, refer to Figure 3 and Figure 4 As shown, the injection molding body 131 has connectors 133 on both sides along the second direction Y; the frame 113 includes second supports 1134 located on both sides of the injection molding body 131 along the second direction Y, the second supports 1134 and the first supports 1131 are arranged in an enclosing manner, and the second supports 1134 are connected one-to-one to the second ends 1332 of the connectors 133. Optionally, the second supports 1134 can be connected to the second ends 1332 of the connectors 133 by welding, bolting or other methods.

[0149] Based on the first direction X connection, this embodiment further implements the second direction Y connection constraint, forming a multi-directional limiting stable support system, improving the overall vibration resistance and installation reliability of the heat exchange component 13. Furthermore, the adapter 1132 is omitted between the second bracket 1134 and the connector 133, adopting a direct connection method, which effectively simplifies the structure, reduces the number of parts, and improves assembly efficiency.

[0150] In some embodiments, refer to Figures 3 to 8 As shown, the connector 133 includes a connecting frame, which includes a first frame 1333 located on both sides of the injection molding body 131 along the first direction X and a second frame 1334 located on both sides of the injection molding body 131 along the second direction Y. Both the first frame 1333 and the second frame 1334 have a first end 1331 and a second end 1332. The second end 1332 of the first frame 1333 is connected to the first bracket 1131 via an adapter 1132, and the second bracket 1134 is connected to the second end 1332 of the second frame 1334. Optionally, the connecting frame can be made of materials such as steel or aluminum.

[0151] The connector 133 in this embodiment adopts a connecting frame structure. Its first frame 1333 is connected to the first bracket 1131 through the adapter 1132, which can increase the structural natural frequency of the battery device and improve the structural stability and strength of the battery device. The second frame 1334 is directly connected to the second bracket 1134, simplifying the structure and improving assembly efficiency. The first end 1331 of the connecting frame is integrally formed with the injection molding body 131 during the injection molding process, which enhances the circumferential stiffness and deformation resistance of the heat exchange component 13.

[0152] In some embodiments, refer to Figure 4 As shown, one of the second frame frames 1334 has a first clearance notch 1335 and a second clearance notch 1336; the heat exchange pipe 132 includes an inlet portion 1322 and an outlet portion 1323 connected to both ends of the heat exchange section 1321. The inlet portion 1322 passes through the first clearance notch 1335 to the outside of the second support 1134 on the corresponding side, and the outlet portion 1323 passes through the second clearance notch 1336 to the outside of the second support 1134 on the corresponding side. Figure 4 Central Province Figure 3 The second bracket 1134 is connected to the second frame 1334.

[0153] In some embodiments, the second frame 1334 has a first end 1331 and a second end 1332, and the first clearance notch 1335 and the second clearance notch 1336 can both be formed on the first end 1331 and the second end 1332.

[0154] This embodiment of the application designs avoidance gaps on the second frame 1334 to accommodate the inlet and outlet portions of the heat exchange pipe 132, providing outlet channels for the inlet and outlet portions, reducing the risk of interference between the pipe and other structural components, and facilitating connection with an external heat exchange medium circulation system to achieve heat exchange. For example, during heat exchange, the heat exchange medium circulation system sends the heat exchange medium through the inlet portion 1322 into the heat exchange portion 1321, where it exchanges heat with the battery cell assembly 12, and then discharges it back to the heat exchange medium circulation system through the outlet portion 1323. The heat exchange medium circulation system is a well-known technology in the art and will not be described in detail here.

[0155] In addition, the import and export sections are centrally located on one side frame, which simplifies the connection of external pipelines and improves assembly efficiency and maintainability.

[0156] In some embodiments, refer to Figure 9 As shown, the heat exchange pipe 132 includes an inlet portion 1322 and an outlet portion 1323 connected to both ends of the heat exchange section 1321. The heat exchange section 1321, the inlet portion 1322 and the outlet portion 1323 can all be installed in the injection-molded body 131 inside the housing 11, and the inlet portion 1322 and the outlet portion 1323 can be located on the same side.

[0157] The inlet section 1322 is provided with an inlet connector 13221 exposed above the injection molding body 131, and the outlet section 1323 is provided with an outlet connector 13231 exposed above the injection molding body 131. The inlet connector 13221 and the outlet connector 13231 are used to connect to the external heat exchange medium circulation system respectively to achieve heat exchange.

[0158] In some embodiments, this application also provides an electrical device, including: a battery device 100 of any of the above embodiments, the battery device 100 being used to provide electrical energy.

[0159] The power supply device can be any of the aforementioned devices or systems that utilize battery device 100.

[0160] The above are merely preferred embodiments of this application and are not intended to limit the embodiments of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Box; The battery cell assembly is located inside the housing; A heat exchange assembly, which is an integrally molded structure, includes an injection-molded body, a heat exchange pipe, and a connector. The injection-molded body is disposed within the housing. The heat exchange pipe includes a heat exchange portion disposed within the injection-molded body. At least a portion of the battery cell assembly is disposed on the injection-molded body and is capable of exchanging heat with the heat exchange portion. The connector has a first end and a second end, the first end being disposed within the injection-molded body and the second end being connected to the housing.

2. The battery device according to claim 1, characterized in that, The injection molding body includes a first body and a second body stacked in phases, the first body being disposed between the battery cell assembly and the second body; the heat exchange portion is a hollow flow channel formed in the first body and / or the second body; the first end is disposed in the first body and / or the second body.

3. The battery device according to claim 2, characterized in that, The first body and the second body are welded together.

4. The battery device according to claim 1, characterized in that, The injection-molded body has a first surface that supports the battery cell assembly, the first surface having an opening corresponding to at least a portion of the heat exchange portion.

5. The battery device according to claim 4, characterized in that, The heat exchange portion is lower than the first surface at the end facing the battery cell assembly.

6. The battery device according to claim 5, characterized in that, The height difference between the first surface and the end of the heat exchange portion facing the battery cell assembly is 0.5mm~0.8mm.

7. The battery device according to any one of claims 1 to 6, characterized in that, Multiple connectors are provided, and the multiple connectors are arranged at intervals around the outer side of the injection-molded body.

8. The battery device according to any one of claims 1 to 6, characterized in that, The connector includes a connecting frame that surrounds the outer side of the injection-molded body.

9. The battery device according to any one of claims 1 to 6, characterized in that, The box body includes a frame, and the second end is connected to the frame.

10. The battery device according to claim 9, characterized in that, The injection molding body is provided with the connecting member on both sides along the first direction; the frame includes a first bracket located on both sides of the injection molding body along the first direction, and the first bracket is provided with an adapter, the adapter being connected to the second end of the connecting member in a one-to-one correspondence.

11. The battery device according to claim 10, characterized in that, The connector and / or the adapter are metal parts.

12. The battery device according to claim 10, characterized in that, At least one of the first brackets has a reinforcing member on the outer side facing away from the battery cell assembly, and the reinforcing member is connected to the adapter on the corresponding side.

13. The battery device according to claim 10, characterized in that, The housing includes a base plate located at the bottom of the injection-molded body, and the adapter is connected between the outer side of the base plate and the first bracket.

14. The battery device according to claim 13, characterized in that, The injection-molded body has a second surface that abuts against the base plate, and the base plate has a third surface that abuts against the second surface, the shape of the second surface being the same as the shape of the third surface.

15. The battery device according to claim 10, characterized in that, The injection molding body is provided with the connecting member on both sides along the second direction; the frame includes a second bracket located on both sides of the injection molding body along the second direction, the second bracket and the first bracket are arranged in a surrounding arrangement, the second bracket is connected to the second end of the connecting member in a one-to-one correspondence, and the first direction intersects the second direction.

16. The battery device according to claim 15, characterized in that, The connector includes a connecting frame, which includes a first frame located on both sides of the injection molding body along the first direction and a second frame located on both sides of the injection molding body along the second direction. The first frame and the second frame each have a first end and a second end. The second end of the first frame is connected to the first bracket in a one-to-one correspondence via the adapter, and the second bracket is connected to the second end of the second frame in a one-to-one correspondence.

17. The battery device according to claim 16, characterized in that, One of the second border frames has a first clearance notch and a second clearance notch; The heat exchange pipe includes an inlet section and an outlet section connected to both ends of the heat exchange section. The inlet section passes through the outside of the second support on the corresponding side from the first clearance gap, and the outlet section passes through the outside of the second support on the corresponding side from the second clearance gap.

18. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1 to 17, wherein the battery device is used to provide electrical energy.

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