Battery device and electric equipment

Abstract

The utility model relates to the related technical field of batteries, and discloses a battery device and electric equipment, the battery device comprises a battery monomer, a box body structure, a battery management assembly, a communication assembly and an antenna assembly, the box body structure is provided with a first wall, and the first wall is provided with a first assembly part; the battery management assembly is connected with the single batteries and is used for monitoring and managing the single batteries; the communication assembly is arranged in the box body structure and is in communication connection with the battery management assembly; the antenna assembly comprises a shell and an antenna installed on the shell, the antenna is connected with the communication assembly, the shell is arranged on the outer side of the first wall, the shell is provided with a bottom wall facing the first wall, a second assembling part is arranged on the bottom wall, and the first assembling part and the second assembling part are matched in a sleeved mode and fixedly connected so that the antenna assembly can be installed on the first wall. The antenna assembly is convenient to assemble and simple in structure, the possibility that the first assembling part and the second assembling part are exposed is reduced, and the attractiveness and reliability of the battery device are improved.

Description

Technical Field

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

[0002] This section provides only background information relevant to this application and is not necessarily prior art.

[0003] Battery devices can store electrical energy and are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0004] In some technologies, battery devices can be equipped with antennas to enable wireless data transmission. Improving the ease of antenna assembly for battery devices has always been a key focus in their development. Utility Model Content

[0005] In view of the above problems, this application provides a battery device and an electrical device to improve the ease of antenna assembly of the battery device.

[0006] The first aspect of this application discloses a battery device, including a battery cell, a housing structure, a battery management component, a communication component, and an antenna assembly. The housing structure has a first wall, on which a first assembly portion is disposed. The battery management component is connected to the battery cell for monitoring and managing the battery cell. The communication component is disposed within the housing structure and is communicatively connected to the battery management component. The antenna assembly includes a housing and an antenna mounted on the housing. The antenna is connected to the communication component for enhancing the signal strength of the communication component. The housing is disposed outside the first wall and has a bottom wall facing the first wall. A second assembly portion is disposed on the bottom wall. The first assembly portion and the second assembly portion are fitted together and fixedly connected to each other to mount the antenna assembly to the first wall.

[0007] In the technical solution of this application embodiment, a second assembly part is provided on the bottom wall of the antenna assembly housing, and a first assembly part is provided on the first wall. When assembling the antenna assembly into the housing structure, the second assembly part and the first assembly part are simply fitted together and fixedly connected, which is convenient for assembly and has a simple structure. Furthermore, the second assembly part is provided on the bottom wall of the housing facing the first wall, and the first assembly part is provided on the first wall of the housing structure for connecting with the antenna assembly. The housing can at least partially cover the first assembly part and the second assembly part, reducing the possibility of the first assembly part and the second assembly part being exposed, and improving the aesthetics and reliability of the battery device.

[0008] In addition, the battery device according to this application may also have the following additional technical features:

[0009] In some embodiments of this application, the first assembly part and the second assembly part are detachably connected. By making the first assembly part and the second assembly part detachably connected, the assembly of the antenna assembly is facilitated, as well as subsequent maintenance or replacement of the antenna assembly.

[0010] In some embodiments of this application, one of the first assembly part and the second assembly part is configured to have a threaded hole, and the other is configured to have a threaded post, wherein the threaded post is threadedly connected to the threaded hole. The antenna assembly can be fixed by threading the first assembly part and the second assembly part together, which is simple in structure; and rotating the antenna assembly can screw the threaded post in or out, thereby realizing the installation or removal of the antenna assembly, which is convenient and improves the ease of installation and removal of the antenna assembly.

[0011] In some embodiments of this application, the second assembly part and the bottom wall are an integral structure; and / or, the first assembly part and the first wall are an integral structure. The structure has high strength and is easy to process and assemble.

[0012] In some embodiments of this application, the first assembly part includes a mounting hole disposed in the first wall, and the second assembly part protrudes toward the first wall relative to the bottom wall, the second assembly part passing through the mounting hole. This reduces changes to the box structure, lowers costs, and facilitates processing and assembly.

[0013] In some embodiments of this application, the first assembly part further includes a fastener; the fastener is at least partially disposed in the mounting hole, or the fastener is disposed on the inner wall surface of the first wall and corresponding to the position of the mounting hole; the second assembly part is fixedly connected to the fastener. The fastener being disposed in the mounting hole or on the inner wall surface of the first wall reduces the possibility of mutual interference between the fastener and the housing. Furthermore, by providing the fastener, the second assembly part can be secured by the fastener, improving the ease of disassembly and assembly of the antenna assembly and the reliability of the antenna assembly's fixation.

[0014] In some embodiments of this application, the fastener is a threaded component with a threaded hole, and the second assembly part is threadedly connected to the threaded hole. The two assembly parts and the threaded component can be connected or disconnected by screwing the antenna assembly, which improves the ease of assembly and disassembly of the antenna assembly.

[0015] In some embodiments of this application, the fastener is fixedly installed on the first wall. The fixed installation of the fastener to the first wall improves the installation stability of the fastener and the ease of assembly between the second assembly part and the fastener. Furthermore, even when the fastener is located in a mounting hole or on the inner surface of the first wall, because the fastener remains fixed to the first wall, the antenna assembly can be assembled to or removed from the housing structure from the outside of the housing structure without disassembling the housing structure. For example, if the fastener is a threaded component, since the threaded component remains relatively fixed to the first wall, the antenna assembly (housing) can be assembled to or removed from the housing structure by screwing it on the outside of the housing structure without disassembling the housing structure.

[0016] In some embodiments of this application, a wiring hole is provided on the bottom wall, and a mounting hole is provided on the first wall. The wiring hole and the mounting hole are positioned correspondingly and communicate with each other. The battery device also includes a first wiring harness. The antenna and the communication component are communicatively connected through the first wiring harness, which passes through the mounting hole and the wiring hole. Because the wiring hole and the mounting hole correspond and communicate with each other, the first wiring harness is easy to route and has a simple structure, improving the ease of assembly between the antenna assembly and the battery device, strengthening the interface compatibility of the housing structure, and shortening the routing path of the first wiring harness. This reduces the space occupancy of the antenna assembly, lowers the possibility of the first wiring harness being exposed, improves the aesthetics of the battery device, reduces the possibility of damage or failure of the first wiring harness, improves the reliability of the antenna assembly, and lowers the cost of the battery device.

[0017] In some embodiments of this application, the second assembly portion protrudes towards the first wall relative to the bottom wall. The second assembly portion passes through the mounting hole and has a wire-through hole. The wire-through hole extends through one end of the second assembly portion facing the bottom wall and the other end of the second assembly portion away from the bottom wall, and the first wire harness passes through the wire-through hole. By providing a wire-through hole on the second assembly portion and having the first wire harness pass through the wire-through hole, the fixed connection structure and wiring structure of the antenna assembly (housing) and the box structure (first wall) are integrated, resulting in a simple structure, convenient processing, and reduced material costs.

[0018] In some embodiments of this application, the housing covers the mounting hole. This reduces the possibility of the first wiring harness being exposed, improves the aesthetics of the enclosure structure, and the housing covering the mounting hole improves its dustproof and waterproof performance.

[0019] In some embodiments of this application, the antenna assembly further includes a seal configured to seal the mounting hole. The seal improves the sealing performance of the housing structure and enhances the dust and water resistance of the battery device.

[0020] In some embodiments of this application, the sealing element includes a sealing gasket, which is sealed between the outer wall surface of the first wall and the bottom wall. The sealing gasket covers and seals the mounting hole, and is sleeved on the second assembly part. The sealing gasket presses against the outer wall surface of the bottom wall and the first wall, resulting in a simple structure and convenient assembly. Furthermore, the sealing gasket achieves a surface seal with the outer wall surface of the first wall, thus sealing the mounting hole, enhancing the interface fit of the housing structure, improving the sealing performance of the mounting hole, and consequently improving the dustproof and waterproof performance of the battery device.

[0021] In some embodiments of this application, a limiting annular groove is provided on the outer wall surface of the first wall and / or a limiting annular groove is provided on the side of the bottom wall facing the first wall. The limiting annular groove surrounds the second assembly part, and the sealing gasket is disposed within the limiting annular groove. The limiting annular groove can limit the sealing gasket, facilitating its assembly and positioning. The limiting annular groove can also position the assembly between the first wall and the housing. When the portion of the first wall forming the limiting annular groove contacts the bottom wall, or when the portion of the bottom wall forming the limiting annular groove contacts the bottom wall, the assembly is considered complete, reducing the possibility of the sealing gasket being excessively compressed, leading to seal failure.

[0022] In some embodiments of this application, a limiting protrusion is provided on the outer wall surface of the first wall and / or a limiting protrusion is provided on the side of the bottom wall facing the first wall. The limiting protrusion surrounds the second assembly part and is arranged along a direction intersecting the arrangement direction from the bottom wall to the first wall. The limiting protrusion and the second assembly part are spaced apart, and a limiting ring groove is formed between the limiting protrusion and the second assembly part. The limiting protrusion can limit the sealing gasket, facilitating the assembly and positioning of the sealing gasket; the limiting protrusion can also enhance the strength of the assembly position between the first wall and the housing, reducing the possibility of the sealing gasket being excessively compressed, or the bottom wall or the first wall being deformed, leading to sealing failure.

[0023] In some embodiments of this application, the battery device further includes a battery housing having a battery compartment, and the battery cells are disposed in the battery compartment; the battery housing is at least partially configured as the housing structure, and the first wall is a portion of the housing wall of the battery housing; or, the battery device further includes an electrical control box disposed outside the battery housing, and the housing of the electrical control box is at least partially configured as the housing structure.

[0024] A second aspect of this application provides an electrical device including a battery device as described in this application or any embodiment thereof, the battery device being used to provide or store electrical energy.

[0025] The electrical equipment described in this application has the same beneficial effects as the battery device proposed in this application or any embodiment of this application.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0029] Figure 2 This is a schematic diagram showing the breakdown of a battery device according to some embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the battery cell as proposed in some embodiments of this application;

[0031] Figure 4 This is a simplified schematic diagram illustrating the electrical control connection of an electrical device, a battery device, and a cloud server according to some embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the antenna assembly and housing structure proposed in some embodiments of this application from one perspective;

[0033] Figure 6 This is a schematic diagram of the internal structure of the box structure proposed in some embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the assembly of the box structure and the second assembly part proposed in some embodiments of this application;

[0035] Figure 8 for Figure 7 Enlarged view of part A;

[0036] Figure 9 This is a cross-sectional view of the first wall and antenna assembly as proposed in some embodiments of this application;

[0037] Figure 10 for Figure 9 Enlarged view of part B;

[0038] Figure 11This is a schematic diagram of the structure of an antenna assembly proposed in some embodiments of this application;

[0039] Figure 12 This is a partial structural diagram of the battery housing proposed in some embodiments of this application.

[0040] The reference numerals in the detailed embodiments are as follows:

[0041] 1. Cloud server;

[0042] 1000, Vehicle; 10, Battery Unit; 11, First Housing; 12, Second Housing; 13, Battery Housing; 131, Battery Compartment; 132, Functional Compartment; 20, Controller; 30, Motor; 40, Vehicle-End High Voltage Box; 41, Main Control Module; 50, Third Wiring Harness;

[0043] 100. Battery cell assembly; 101. Battery cell; 110. Housing; 111. Housing body; 112. End cap; 113. Electrode terminal; 120. Electrode assembly; 121. Tab;

[0044] 210. Battery management component; 211. Second wiring harness; 2111. Wire; 2112. Communication line; 220. Communication component;

[0045] 300. Antenna assembly; 310. Housing; 311. Bottom wall; 312. Cable exit hole; 313. Second assembly part; 314. Cable through hole; 315. Limiting protrusion ring; 316. Limiting ring groove; 317. Cover; 318. Base; 319. Bottom surface; 320. Antenna; 330. First wiring harness; 340. Sealing gasket;

[0046] 400. Box structure; 410. First assembly part; 411. Mounting hole; 412. Fastener; 413. Threaded part; 420. First wall. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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).

[0053] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a communication 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.

[0055] With the booming development of the new energy industry, the capacity of battery devices is increasing, and the performance requirements for these devices are also becoming more stringent. A battery device typically includes one or more individual battery cells. It may also be equipped with a battery management component, which monitors the status of the individual battery cells and provides adaptive management during operation.

[0056] In some technologies, the battery device may also be equipped with an antenna assembly that enables wireless data transmission of the battery management component. For example, the antenna assembly may be combined with a communication component to enable remote data transmission between the battery management component and a cloud server.

[0057] Antenna assemblies are typically located on the outside of the battery pack's housing. They can be directly assembled to the outer wall of the housing or mounted on the control box. Research has found that the assembly of the antenna assembly with its housing (either the battery pack housing or the control box housing) is complex, affecting the assembly efficiency of the battery pack and hindering its production efficiency. Furthermore, the connecting components between the antenna assembly and the housing are often partially exposed, making them susceptible to erosion from moisture and other substances during long-term use, leading to aging, rust, or corrosion. This not only affects the aesthetics of the battery pack but also the reliability of the antenna assembly.

[0058] Based on the above research, in order to improve the reliability and assembly efficiency of the antenna assembly, this application provides a battery device. The housing structure (i.e., the housing structure for mounting the antenna assembly) has a first assembly part on the wall for mounting the antenna assembly, and the antenna assembly has a second assembly part on the bottom wall facing the housing. The first assembly part and the second assembly part are configured to be able to fit together and be fixedly connected.

[0059] During the assembly of the antenna assembly into the housing, the antenna assembly can be installed on the first wall by interlocking and fixing the first assembly part and the second assembly part. This process is convenient and the structure is simple. Meanwhile, the second assembly part is located on the bottom wall of the housing facing the housing structure, and the first assembly part is located on the first wall of the housing structure used for connecting with the antenna assembly. The housing can at least partially cover the first and second assembly parts, reducing the possibility of the first and second assembly parts being exposed and improving the aesthetics and reliability of the battery device.

[0060] This application provides an electrical device that uses a battery as a power source. 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. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft.

[0061] It should be understood that the battery device described in the embodiments of this application is not limited to the electrical equipment described above, but can also be applied to all equipment that uses a battery device. However, for the sake of brevity, the following embodiments are all described using electric vehicles as examples.

[0062] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 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 10 is provided inside the vehicle 1000, and the battery device 10 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 10 can be used to power the vehicle 1000; for example, the battery device 10 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 20 and a motor 30. The controller 20 is used to control the battery device 10 to supply power to the motor 30, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0063] In some embodiments of this application, the battery device 10 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.

[0064] The battery device 10 mentioned in the embodiments of this application may include one or more battery cell assemblies 100 for providing voltage and capacity. The battery cell assembly 100 may include a plurality of battery cells 101, which are connected in series, parallel or mixed connection via a busbar.

[0065] In some embodiments, the battery cell assembly 100 is typically formed by arranging a plurality of battery cells 101.

[0066] As an example, the battery cell assembly 100 can be a battery module, which is formed by arranging and fixing multiple battery cells 101 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 101 together with cable ties.

[0067] In some embodiments, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the battery device in some embodiments of this application. The battery device 10 can be a battery pack, which includes a battery housing 13 and one or more battery cell assemblies 100, with the battery cell assemblies 100 housed in the battery housing 13.

[0068] As an example, the battery cell assembly 100 can be a battery module, and the battery cell assembly 100 can be housed in the battery housing 13 by fixing the battery module in the battery housing 13.

[0069] As an example, the battery cell assembly 100 can also be housed in the battery housing 13 by directly fixing multiple battery cells 101 to the battery housing 13.

[0070] As an example, such as Figure 2 As shown, the battery housing 13 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together, forming a closed space inside the battery housing 13 to house the battery cell assembly 100. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0071] As an example, the battery housing 13 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the battery housing 13 forms an enclosed space to accommodate the battery cell assembly 100.

[0072] In some embodiments, the battery housing 13 may be part of the chassis structure of the vehicle 1000. For example, a portion of the battery housing 13 may be at least a portion of the floor of the vehicle 1000, or a portion of the battery housing 13 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0073] In some embodiments, battery device 10 refers to an energy storage device, which includes a cabinet with a door on at least one side. The energy storage device includes energy storage containers, energy storage cabinets, etc.

[0074] In this embodiment of the application, the battery cell 101 can be a secondary battery. A secondary battery refers to a battery cell 101 that can be used again after being discharged by recharging to activate the active materials.

[0075] The battery cell 101 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.

[0076] As an example, the battery cell 101 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0077] like Figure 3 As shown, Figure 3 The diagram below shows a battery cell 101 according to some embodiments of this application. The battery cell 101 generally includes a housing 110, an electrode assembly 120, and electrode terminals 113. The electrode terminals 113 are disposed on the housing, and the electrode assembly 120 is disposed within the housing 110. The electrode assembly 120 includes a positive electrode, a negative electrode, and a separator, with the separator disposed between the negative and positive electrodes. During the charging and discharging process of the battery cell 101, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, disposed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0078] The electrode assembly 120 is provided with tabs 121, which can conduct current from the electrode assembly 120. The tabs 121 include a positive tab and a negative tab.

[0079] Electrode terminal 113 is communicatively connected to tab 121. Electrode terminal 113 can be directly connected to tab 121, or it can be indirectly connected to tab 121 through a current collector.

[0080] For example, the housing 110 may include a housing body 111 and an end cap 112, the housing body 111 having an opening, and the end cap 112 covering the opening of the housing body 111. The electrode terminal 113 may be disposed on the end cap 112 or on the housing body 111.

[0081] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0082] The positive current collector can be made of metal foil, conductive polymer material, carbon material, or composite current collector. For example, as a metal foil, pure metal, alloy, or surface-treated metal can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0083] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide and their respective modified compounds.

[0084] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0085] As an example, the negative electrode current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material substrate and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0086] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0087] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0088] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells.

[0089] The separator is a separator membrane. This application does not impose any particular restrictions on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0090] like Figure 4 As shown, Figure 4This is a simplified schematic diagram illustrating the electrical control connections of an electrical device and battery assembly according to some embodiments of this application. The battery assembly 10 may further include a battery management component 210, also known as a battery management unit, which is used to monitor and manage the individual battery cells 100. The battery management component 210 can monitor information such as the current, voltage, power, or temperature of the individual battery cells 100. For example, it can control the charging and discharging current and voltage of the individual battery cells 100. The battery management component 210 includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0091] Optionally, the battery device 10 also includes a central control module 41, which can be used to monitor and manage the battery device 10 of the electrical device. The central control module 41 can monitor information such as current, voltage, power, state of charge, or temperature of the battery device 10. For example, it can control the charging and discharging current and voltage of the battery device 10. As an example, the central control module 41 includes modules such as an insulation monitoring module (IMM) and a master battery management unit (MBMU).

[0092] like Figure 4 As shown, the battery management component 210 of the battery device 10 can communicate with the control unit of the electrical equipment (e.g., the controller 20 of the vehicle 1000) via the main control module 41. Optionally, the control unit of the electrical equipment (e.g., the controller 20 of the vehicle 1000) can communicate with the main control module 41 via a wiring harness (refer to the third wiring harness 50), and the main control module 41 can be connected to the battery management component 210 of the battery device 10 via a wiring harness (refer to the third wiring harness 50). The wiring harness (i.e., the third wiring harness 50) can specifically be a CAN line, which is the Controller Area Network (CAN) bus of the Controller Area Network (CAN), a multi-master serial communication network mainly used for distributed control and real-time control. It uses communication data blocks for encoding, replacing the traditional station address encoding, so that the number of nodes in the network is theoretically unlimited. In the vehicle 1000, the main control module 41 can be located in the high-voltage box 40 at the vehicle end.

[0093] In some embodiments, the battery management component 210 may optionally include a communication component 220, which may be a wireless communication component. For example, the communication component 220 may include a 4G communication component, a 3G (third-generation mobile communication technology) communication component, and / or a 5G communication component, etc.

[0094] For example, communication component 220 can serve as a remote data communication bridge between battery device 10 and cloud server 1, enabling communication between battery management component 210 (i.e., battery management component 210) and cloud server 1. The functions of communication component 220 may include: transmitting data from battery device 10 back to cloud server 1; periodically transmitting data back to cloud server 1 when the vehicle 1000 is powered down (power down refers to the start-up of the vehicle 1000's electrical system, including the power supply of low-voltage and high-voltage systems); controlling commands issued by cloud server 1, which may include controlling battery device 10; adjusting the data transmission cycle of battery device 10 (transmission refers to the process of transmitting data back to cloud server 1); and remotely upgrading the relevant software of battery device 10, for example, upgrading the software of battery management component 210 via OTA (Over-The-Air, a method for remotely updating device firmware or software through wireless communication technology). In some implementations, communication component 220 may also have the function of locating the location information of battery device 10.

[0095] The communication component 220 can be integrated with the battery management component 210, or the communication component 220 and the battery management component 210 can be set separately. The two can be connected by a wiring harness (refer to the second wiring harness 211). The wiring harness (refer to the second wiring harness 211) can be a data line that has both power supply and data transmission functions. Of course, the wiring harness can also include a separately set power supply wire 2111 and a communication line 2112 (e.g., CAN line) for data transmission.

[0096] The cloud server 1 may be, but is not limited to, a remote control center for the battery device 10, capable of remotely monitoring and managing the status of the battery device.

[0097] In some embodiments, such as Figure 4 As shown, the battery device 10 may also include an antenna assembly 300, which can be connected to the communication component (which may be a wireless communication component) of the battery management component 210 to enhance the signal and improve the stability and range of data transmission.

[0098] For example, the antenna assembly 300 can be communicatively connected to the communication assembly 220 to enable wireless remote data transmission between the battery management assembly 210 and the cloud server 1.

[0099] The antenna 320 of the antenna assembly 300 may include an antenna 320 that enhances the signal of the communication assembly 220, such as a 4G antenna corresponding to a 4G communication assembly, a 3G antenna corresponding to a 3G communication assembly, and / or a 5G antenna corresponding to a 5G communication assembly, etc., which can enhance the signal strength of the cellular network.

[0100] In some embodiments, the battery device may also be provided with a positioning component, which may be integrated into the circuit board or circuit of the communication component 220, or may be integrated into the battery management component 210. The positioning component may be a GNSS positioning module, which is an electronic device that integrates a Global Navigation Satellite System (GNSS) receiver and related circuitry.

[0101] The location information of the positioning component can be sent to the cloud server 1 via the communication component 220. By setting the positioning component, the location of the battery device 10 can be obtained, the battery device 10 can be located, making it easier to find the battery device 10 and reducing the possibility of the battery device 10 being lost.

[0102] When the communication component 220 is equipped with a positioning component, the antenna 320 may also include a component that enhances the positioning signal, such as a GNSS antenna corresponding to the GNSS positioning module. The GNSS antenna is used to enhance the strength of the GNSS satellite receiving signal and to search for BeiDou satellites.

[0103] like Figures 2 to 4 and combined Figures 5 to 11 As shown, Figure 5 This is a schematic diagram of the antenna assembly and housing structure proposed in some embodiments of this application from one perspective. Figure 6 This is a schematic diagram of the internal structure of the box structure proposed in some embodiments of this application. Figure 7 This is a schematic diagram of the assembly of the box structure and the second assembly part proposed in some embodiments of this application. Figure 8 for Figure 7 Enlarged view of part A, Figure 9 This is a cross-sectional view of the assembly of the first wall and the antenna assembly according to some embodiments of this application. Figure 10 for Figure 9 Enlarged view of part B, Figure 11This is a schematic diagram of the antenna assembly structure proposed in some embodiments of this application. This embodiment provides a battery device 10, including a battery cell 101, a housing structure 400, a battery management component 210, a communication component 220, and an antenna assembly 300. The housing structure 400 has a first wall 420, on which a first assembly part 410 is provided; the battery management component 210 is connected to the battery cell 101 and is used to monitor and manage the battery cell assembly 100; the communication component 220 is disposed inside the housing structure 400 and is communicatively connected to the battery management component 210; the antenna assembly 300 includes a housing 310 and an antenna 320 mounted on the housing 310, the antenna 320 being connected to the communication component 220 to enhance the signal strength of the communication component 220. The housing 310 is disposed on the outside of the first wall 420. The housing 310 has a bottom wall 311 facing the first wall 420. A second assembly part 313 is disposed on the bottom wall 311. The first assembly part 410 and the second assembly part 313 are fitted together and fixedly connected to each other so as to install the antenna assembly 300 on the first wall 420.

[0104] The communication connection involved in this application or its embodiments refers to a connection method that enables communication between devices through signal transmission and interaction. Unless otherwise specified, it includes wired connections and wireless connections.

[0105] One or more battery cells 101 can be provided. The battery device 10 may include a battery housing 13, and a battery compartment 131 is formed inside the battery housing 13, where all battery cells 101 can be disposed.

[0106] In some implementations, the battery housing 13 can serve as a housing structure 400 for mounting the battery management component 210, the communication component 220, and the battery management component 210. For example, Figure 12 As shown, Figure 12 This is a partial structural diagram of a battery housing according to some embodiments of this application. The battery housing 13 can be divided into a battery compartment 131 and a functional compartment 132. The battery compartment 131 is used to house individual battery cells 101, while the functional compartment 132 is used to house components such as a battery management component 210 and a communication component 220. An antenna assembly 300 can be mounted on the outer wall of the battery housing 13 surrounding the functional compartment 132. The placement of the antenna assembly 300 on the outer wall of the battery housing 13 reduces the signal shielding effect of the battery housing 13 on the antenna assembly 300, thereby improving communication reliability.

[0107] In some embodiments, the battery device 10 may include an electrical control box, wherein the communication component 220 may be disposed within the electrical control box. Optionally, the battery management component 210 may also be disposed within the electrical control box.

[0108] It should be noted that the electrical control box can be a separate enclosure for installing low-voltage control components such as the communication component 220 and the battery management component 210. Optionally, in addition to housing the battery management component 210 and the communication component 220, the electrical control box can also integrate relevant high-voltage devices of the battery device 10, such as relays and pre-charge resistors. In other words, the electrical control box can also be a high-voltage box for the battery device 10, which can house relevant components of the high-voltage module and relevant components of low-voltage control. The electrical control box can be located inside or outside the battery enclosure 13.

[0109] In other implementations, the enclosure of the electrical control box can also serve as the enclosure structure 400 for mounting the antenna assembly 300, which can be mounted on the outer wall of the battery box enclosure. When the antenna assembly 300 is mounted on the enclosure of the electrical control box, the electrical control box can be positioned outside the battery box 13, thereby reducing the signal shielding effect of the battery box 13 on the antenna assembly 300 and improving communication reliability.

[0110] It should be noted that the electrical control box is located on the outside of the battery box 13. It can be installed on the outer wall of the battery box 13, or the electrical control box and the battery box 13 can be arranged at intervals in the mechanical arrangement. The components in the electrical control box and the battery box 13 can be electrically and communicatively connected through wire harnesses.

[0111] In some embodiments, the enclosure structure 400 may also be an independently configured enclosure, which may be a separate enclosure for installing the battery management component 210, the communication component 220 and the antenna component 300. In this case, the enclosure structure 400 may be externally placed on the battery enclosure 13 to reduce the signal shielding effect of the battery enclosure 13 on the antenna component 300 and improve communication reliability.

[0112] The first wall 420 is one of the walls of the box structure 400. The first wall 420 can be the side wall, top wall or bottom wall of the box structure 400, etc.

[0113] The housing 310 serves as the mounting carrier for the antenna 320. A receiving cavity is provided within the housing 310, where the antenna 320 can be housed. The housing 310 provides protection for the antenna 320. The bottom wall 311 of the housing 310 faces the first wall 420, and the bottom wall 311 can at least partially contact the outer surface of the first wall 420. The housing 310 can be made of a non-signal shielding material, such as a non-metallic material, specifically a plastic box, to reduce the signal shielding effect of the housing 310.

[0114] The housing 310 can be assembled from two parts by snapping them together. These two parts can be detachably connected or non-detachably connected by bonding, welding, or other methods.

[0115] For example, the housing 310 may include a groove shell and a cover plate. The groove shell is hollow and has an opening. The cover plate covers the opening of the groove shell to form a receiving cavity. The bottom wall 311 of the groove shell is formed and is fitted and connected to the first wall 420. The opening of the groove shell faces away from the first wall 420. The groove shell and the cover plate may be sealed with glue and fixed with screws or other fasteners.

[0116] For example, such as Figures 9 to 11 As shown, the housing 310 may also include a base 318 and a cover 317. The cover 317 covers the base 318 to form a receiving cavity. The base 318 may form a bottom wall 311 and may be connected to the battery box 13. The cover 317 is located on the side of the base 318 opposite to the battery box 13. The base 318 and the cover 317 may be sealed by a sealing structure such as glue, sealing ring, or sealing step, and the base 318 and the cover 317 may be fixed with screws or other fasteners.

[0117] The first assembly part 410 and the second assembly part 313 are matched with each other and can be plugged in and fixedly connected. The first assembly part 410 and the second assembly part 313 can be connected in a nested plugging structure, where the first assembly part 410 is plugged into the second assembly part 313, the second assembly part 313 is plugged into the first assembly part 410, or a partially nested plugging structure in which part of the first assembly part 410 is plugged into the second assembly part 313 and part of the second assembly part 313 is plugged into the first assembly part 410.

[0118] For example, the first assembly part 410 and the second assembly part 313 can be a snap-fit ​​structure, a threaded structure, etc. that cooperate with each other.

[0119] For example, the first assembly part and the second assembly part 313 may also be interlocked and fixedly connected by glue or welding.

[0120] In this embodiment, the battery device 10 has a second assembly part 313 on the bottom wall 311 of the housing 310 of the antenna assembly 300, and a first assembly part 410 on the first wall 420. When assembling the antenna assembly 300 into the housing structure 400, the second assembly part 313 and the first assembly part 410 are fitted together and fixedly connected, which is convenient for assembly and simple in structure. Furthermore, the second assembly part 313 is located on the bottom wall 311 of the housing 310 facing the first wall 420, and the first assembly part 410 is located on the first wall 420 of the housing structure 400 for connecting with the antenna assembly 300. The housing 310 can at least partially cover the first assembly part 410 and the second assembly part 313, reducing the possibility of the first assembly part 410 and the second assembly part 313 being exposed, and improving the aesthetics and reliability of the battery device 10.

[0121] According to some embodiments of this application, the first assembly part 410 and the second assembly part 313 may optionally be detachably connected.

[0122] Detachable connection and non-detachable connection are opposite meanings. A detachable connection refers to a connection where the two connected parts (in this embodiment, the first assembly part 410 and the second assembly part 313) can be disassembled and reassembled without destructive means. This can include threaded connections, snap-fit ​​connections, etc. Optionally, a detachable connection can be achieved using bolts, screws, pins, clips, etc. A non-detachable connection, on the other hand, refers to a connection that, once completed, is difficult or impossible to disassemble without damaging the components. Non-detachable connections can include welding, riveting, bonding, etc.

[0123] For example, the first assembly part 410 and the second assembly part 313 may be a snap-fit ​​structure that cooperates with each other.

[0124] For example, the first assembly part 410 and the second assembly part 313 may also be mutually mating threaded structures.

[0125] It should be noted that in some other embodiments, the first assembly part 410 and the second assembly part 313 may also be configured to be non-detachably connected. In this case, if it is necessary to disassemble the antenna assembly 300, the focus can be on damaging the antenna assembly 300 or damaging the connector connecting the antenna assembly 300 and the housing structure 400 to reduce damage to the housing structure 400.

[0126] In this embodiment, the battery device 10 detachably connects the first assembly part 410 and the second assembly part 313, facilitating the assembly of the antenna assembly 300 and simplifying future maintenance or replacement. Furthermore, the first assembly part 410 and the second assembly part 313 of the antenna assembly 300 are shielded by the housing 310, making their connection less susceptible to corrosion from moisture and other substances. This reduces the possibility of aging, rusting, or corrosion, improving the reliability of the antenna assembly 300. It also reduces the difficulty of disassembly and assembly during future maintenance or replacement, increasing maintenance efficiency and lowering repair costs.

[0127] According to some embodiments of this application, optionally, such as Figures 6 to 11 As shown, one of the first assembly part 410 and the second assembly part 313 is configured to have a threaded hole, and the other is configured to have a threaded post, with the threaded post threadedly connected to the threaded hole.

[0128] In some implementations, a threaded component may be provided on the bottom wall 311 of the housing 310, and the threaded component may form a threaded hole. Alternatively, a threaded hole may be directly provided on the bottom wall 311 of the housing 310. The first wall 420 of the box structure 400 may protrude outward to form a threaded post, and the threaded post is threadedly connected to the threaded component.

[0129] In some other implementations, the first wall 420 of the housing structure 400 may be provided with a threaded component, which forms a threaded hole. Alternatively, the first wall 420 of the housing structure 400 may be directly provided with a threaded hole, and the bottom wall 311 of the housing 310 may protrude outward to form a threaded post, which is threadedly connected to the threaded component.

[0130] For example, the first assembly part 410 and the second assembly part 313 may be disposed at corresponding positions at the geometric center of the bottom wall 311 to improve the assembly stability of the antenna assembly 300.

[0131] In this embodiment, the battery device 10 and the antenna assembly 300 can be fixed by threaded connection between the first assembly part 410 and the second assembly part 313, which is simple in structure; and rotating the antenna assembly 300 can make the threaded post screwed in or out, thereby realizing the installation or disassembly of the antenna assembly 300, which is convenient to operate and improves the ease of installation and disassembly of the antenna assembly 300.

[0132] According to some embodiments of this application, optionally, the second assembly part 313 and the bottom wall 311 are an integral structure; and / or, the first assembly part 410 and the first wall 420 are an integral structure.

[0133] For example, such as Figures 6 to 11 As shown, the second assembly part 313 may be a threaded post welded to the bottom wall 311, or the second assembly part 313 may be a threaded post integrally formed with the bottom wall 311.

[0134] For example, the first assembly portion 410 may include a threaded hole disposed on the first wall 420. Optionally, the first assembly portion 410 may also include a mounting hole 411 passing through the first wall 420 and a threaded part 413 welded or integrally formed on the first wall 420.

[0135] By making the second assembly part 313 and the bottom wall 311 into one structure, or by making the first assembly part 410 and the first wall 420 into one structure, the structure has high strength and is easy to process and assemble.

[0136] According to some embodiments of this application, optionally, such as Figures 6 to 11As shown, the first assembly part 410 includes a mounting hole 411 provided in the first wall 420, and the second assembly part 313 is provided protruding toward the first wall 420 relative to the bottom wall 311, and the second assembly part 313 passes through the mounting hole 411.

[0137] The mounting hole 411 can be a threaded hole, and the second assembly part 313 can be provided with external threads, and the second assembly part 313 is threadedly connected to the mounting hole 411. The mounting hole 411 can also be a smooth through hole, and the second assembly part 313 and the mounting hole 411 can be fixedly set by fasteners 412 or buckles, etc.

[0138] The second assembly part 313 is provided by protruding outward from the bottom wall 311, and the mounting hole 411 is provided on the first wall 420. This can reduce the changes to the box structure 400, reduce the cost, and facilitate processing and assembly.

[0139] According to some embodiments of this application, optionally, such as Figures 6 to 11 As shown, the first assembly part 410 also includes a fastener 412; the fastener 412 is at least partially disposed in the mounting hole 411, or the fastener 412 is disposed on the inner wall surface of the first wall 420 and is disposed corresponding to the position of the mounting hole 411; the second assembly part 313 is fixedly connected to the fastener 412.

[0140] Fastener 412 can be a threaded part 413, which is threadedly fixed to the second assembly part 313. Fastener 412 can also be a snap-fit ​​fixing structure such as a locating pin.

[0141] For example, the fastener 412 can be fully installed in the mounting hole 411 and fixed relative to the mounting hole 411.

[0142] For example, the fastener 412 may also be partially disposed within the mounting hole 411, with the remaining portion protruding from the inner wall surface of the first wall 420.

[0143] For example, fastener 412 may also be provided on the inner wall surface of the first wall 420.

[0144] The inner wall surface of the first wall 420 refers to the side of the first wall 420 facing the interior of the housing structure 400. The fastener 412 can be non-detachably connected to the first wall 420, for example, the fastener 412 can be fixedly connected to the mounting hole 411 or the inner wall surface of the first wall 420 by welding or adhesive bonding; the fastener 412 can also be detachably connected to the first wall 420, for example, the fastener 412 can simply press against the inner wall surface of the first wall 420 under the action of the second assembly part 313.

[0145] Fastener 412 is provided on the mounting hole 411 or the inner wall surface of the first wall 420, which reduces the possibility of mutual interference between fastener 412 and housing 310. Furthermore, by providing fastener 412, the second assembly part 313 can be fastened by fastener 412, which improves the ease of disassembly and assembly of antenna assembly 300 and the reliability of antenna assembly 300.

[0146] According to some embodiments of this application, optionally, such as Figures 6 to 11 As shown, fastener 412 is a threaded part 413 with a threaded hole, and the second assembly part 313 is threadedly connected to the threaded hole.

[0147] The threaded component 413 can be a nut with a threaded hole, and the second assembly part 313 can be partially provided with external threads, that is, at least partially configured as a threaded post. The second assembly part 313 and the threaded component 413 can be connected or disconnected by turning the antenna assembly 300, which improves the ease of assembly and disassembly of the antenna assembly 300.

[0148] According to some embodiments of this application, optionally, such as Figure 6 , Figures 9 to 11 As shown, fastener 412 is fixedly installed on the first wall 420.

[0149] It should be noted that when the threaded part 413 is fixedly installed on the first wall 420, it means that the fastener 412 is installed and fixed on the first wall 420, and the fastener 412 is fixedly connected to the first wall 420. Even when the second assembly part 313 is not assembled with the fastener 412, the fastener 412 can still remain relatively fixed to the first wall 420.

[0150] For example, fastener 412 can be installed and fixed to the first wall 420 by means of welding, bonding, threaded connection, etc.

[0151] The fastener 412 is fixedly disposed with the first wall 420, which improves the installation stability of the fastener 412 and the ease of assembly between the second assembly part 313 and the fastener 412. Even when the fastener 412 is disposed in the mounting hole 411 or on the inner wall surface of the first wall 420, since the fastener 412 remains fixedly disposed with the first wall 420, the antenna assembly 300 can be assembled to or removed from the housing structure 400 from the outside of the housing structure 400 without disassembling the housing structure 400. For example, if the fastener 412 is a threaded part 413, since the threaded part 413 remains relatively fixed with the first wall 420, the antenna assembly 300 can be assembled to or removed from the housing structure 400 by screwing the antenna assembly 300 (housing 310) from the outside of the housing structure 400 without disassembling the housing structure 400.

[0152] In this embodiment, the antenna 320 of the battery device 10 and the communication component 220 can be connected via a wire harness (defined as the first wire harness 330 for ease of description). In some technologies, the antenna assembly 300 may have the first wire harness 330 extending from the side of the housing 310. The battery box 13 or the control box has a header located at a distance from the antenna assembly 300. On the outside of the box structure 400, the first wire harness 330 extends from the antenna assembly 300 to the header and passes through the header to connect with the communication component 220 inside the box structure 400. In this way, a relatively long portion of the first wire harness 330 of the antenna assembly 300 is exposed, and the first wire harness 330 of the antenna assembly 300 is usually reserved with a long length. In actual assembly, it is usually necessary to use clips to clamp and fix the excessively long first wire harness 330. The structure is complex, occupies a large space, and has poor aesthetics. The first wire harness 330 is easily damaged, leading to communication failure and reducing the reliability of the antenna assembly 300.

[0153] Based on the above problems, in order to further improve the reliability of the antenna assembly 300, in some embodiments of the application, optionally, such as Figures 5 to 12 As shown, the antenna assembly 300 has a wire outlet hole 312 on its bottom wall 311 and a mounting hole 411 on its first wall 420. The wire outlet hole 312 and the mounting hole 411 are positioned and connected. The battery device 10 also includes a first wire harness 330. The antenna 320 and the communication assembly 220 are connected through the first wire harness 330. The first wire harness 330 passes through the mounting hole 411 and the wire outlet hole 312.

[0154] The cable outlet 312 can connect the interior and exterior of the housing 310, and the cable outlet 312 can be provided on the first surface of the housing 310. The cable outlet 312 and the mounting hole 411 can be aligned at the center, that is, they can be coaxial.

[0155] The first wiring harness 330 can be a data cable that has both power supply and data transmission functions. Of course, the first wiring harness 330 can also include a power supply wire 2111 and a communication line 2112 (e.g., CAN line) for data transmission, which are separately configured.

[0156] The first wiring harness 330 and the antenna 320 can be detachably connected or non-detachably connected; the first wiring harness 330 and the communication component 220 can be detachably connected or non-detachably connected.

[0157] For example, the first wiring harness 330 can be integrated into the antenna assembly 300. The other end of the first wiring harness 330 is exposed on the outside of the wire outlet hole 312. When assembling the antenna assembly 300 into the housing structure 400, the exposed end of the first wiring harness 330 passes through the mounting hole 411 of the first wall 420 and enters the housing structure 400 to communicate with the communication component 220. The first wiring harness 330 and the communication component 220 can be detachably connected or non-detachably fixedly connected.

[0158] For example, the first wiring harness 330 can also be integrated into the communication component 220. When assembling the antenna component 300 into the housing structure 400, the first wiring harness 330 passes through the mounting hole 411 of the first wall 420 and the wire outlet hole 312 of the housing 310 from inside the housing structure 400 and enters the housing 310 to communicate with the antenna 320. The first wiring harness 330 and the antenna 320 can be detachably connected or non-detachably connected.

[0159] It should be noted that when the first wiring harness 330 and the antenna 320 (or the first wiring harness 330 and the communication component 220) are detachably connected, both the communication connection and the mechanical connection between the two can be set to be detachable.

[0160] In this embodiment, the battery device 10 has a first wiring harness 330 that can be pre-assembled and fixed with the antenna assembly 300. The portion of the first wiring harness 330 connected to the antenna assembly 300 that passes through the outlet hole 312 can directly pass into the mounting hole 411 and communicate with the communication component 220 inside the battery device 10 after passing through the mounting hole 411. Alternatively, the first wiring harness 330 can be pre-assembled and fixed with the communication component 220. After passing through the mounting hole 411, the first wiring harness 330 connected to the communication component 220 can directly enter the housing 310 assembly through the outlet hole 312. Since the outlet hole 312 corresponds to and is connected to the mounting hole 411, the first wire harness 330 is easy to route and has a simple structure, which improves the ease of assembly of the antenna assembly 300 and the battery device 10, strengthens the interface compatibility of the housing structure 400, and can shorten the routing path of the first wire harness 330, reduce the space occupancy of the antenna assembly 300, reduce the possibility of the first wire harness 330 being exposed, improve the aesthetics of the battery device 10, reduce the possibility of damage or failure of the first wire harness 330, improve the reliability of the antenna assembly 300, and reduce the cost of the battery device 10.

[0161] According to some embodiments of this application, optionally, such as Figures 6 to 11As shown, the second assembly part 313 protrudes towards the first wall 420 relative to the bottom wall 311. The second assembly part 313 passes through the mounting hole 411 and is provided with a wire hole 314. The wire hole 314 passes through one end of the second assembly part 313 facing the bottom wall 311 and the other end of the second assembly part 313 away from the bottom wall 311. The first wire harness 330 passes through the wire hole 314.

[0162] The wire through hole 314 and the wire outlet hole 312 can be coaxially arranged, and the second assembly part 313 can connect the interior of the housing 310 and the interior of the box structure 400.

[0163] For example, the second assembly part 313 and the bottom wall 311 can be an integral structure. The second assembly part 313 passes through the mounting hole 411, and the end of the second assembly part 313 facing away from the bottom wall 311 is flush with the inner wall surface of the first wall 420, or the end of the second assembly part 313 facing away from the bottom wall 311 protrudes inward relative to the inner wall surface of the first wall 420. In this way, the wire hole 314 can extend directly from the wire outlet hole 312 into the interior of the housing structure 400. The first wire harness 330 only needs to pass through the wire hole 314 of the second assembly part 313, and can pass through the mounting hole 411 by relying on the second assembly part 313, which is convenient for assembly.

[0164] By providing a wire hole 314 on the second assembly part 313, the first wire harness 330 passes through the wire hole 314. In this way, the fixed connection structure and wiring structure of the antenna assembly 300 (housing 310) and the box structure 400 (first wall 420) are integrated. The structure is simple, the processing is convenient, and the material cost is saved.

[0165] According to some embodiments of this application, optionally, the housing 310 covers the mounting hole 411.

[0166] In other words, the orthographic projection of the housing 310 onto the first wall 420 can cover the mounting hole 411, and the mounting hole 411 is not exposed under the covering effect of the housing 310.

[0167] For example, the area of ​​the bottom wall 311 of the housing 310 is larger than the area of ​​the mounting hole 411, and the circumferential edge of the bottom wall 311 surrounds the circumferential outer side of the mounting hole 411.

[0168] The housing 310 covers the mounting hole 411, which reduces the possibility of the first wire harness 330 being exposed and improves the aesthetics of the enclosure structure 400. The housing 310 covering the mounting hole 411 also improves the dustproof and waterproof performance of the mounting hole 411. Furthermore, by covering the mounting hole 411 with the housing 310, the seals between the mounting hole 411 of the enclosure structure 400, the cable outlet hole 312 of the housing 310, and the first wire harness 330 can be integrated, reducing the sealing complexity of the cable outlet hole 312 of the housing 310 and the mounting hole 411 of the enclosure structure 400, making assembly simple and convenient.

[0169] According to some embodiments of this application, optionally, such as Figures 9 to 11 As shown, the antenna assembly 300 also includes a seal, which is configured to seal the mounting hole 411.

[0170] For example, the seal may be a sealing ring, which may be disposed inside the mounting hole 411 and sleeved on the outside of the second assembly part 313 to seal the mounting hole 411.

[0171] For example, the seal can also be a sealing gasket 340. The sealing gasket 340 can be disposed at one end of the mounting hole 411 facing inward toward the housing structure 400, or at the other end of the mounting hole 411 facing outward toward the housing structure 400. The sealing gasket 340 covers and seals the mounting hole 411, and the first wire harness 330 can pass through the sealing gasket.

[0172] By setting up sealing elements, the sealing performance of the housing structure 400 can be improved, and the dustproof and waterproof performance of the battery device 10 can be improved.

[0173] According to some embodiments of this application, optionally, such as Figures 9 to 11 As shown, the sealing element includes a sealing gasket 340, which is sealed between the outer wall surface of the first wall 420 and the bottom wall 311. The sealing gasket 340 covers and seals the mounting hole 411, and the sealing gasket 340 is sleeved on the second assembly part 313.

[0174] The sealing gasket 340 can be pressed and fixed to the outer wall surface of the first wall 420 by the housing 310.

[0175] The sealing gasket 340 is a structure with a certain degree of elasticity or flexibility, and it can be a rubber gasket, a soft plastic gasket, etc.

[0176] A sealing gasket 340 is disposed on the outer wall surface of the first wall 420. The sealing gasket 340 covers the end of the mounting hole 411 facing outward from the housing structure 400. The sealing gasket 340 achieves the sealing of the mounting hole 411 by sealing the surface between itself and the outer wall surface of the first wall 420.

[0177] The sealing gasket 340 and the second assembly part 313 can be coaxially arranged. The sealing gasket 340 has an assembly hole in the middle, and the second assembly part 313 can pass through the assembly hole. The inner circumferential surface of the sealing gasket 340 and the outer circumferential surface of the second assembly part 313 can either seal against each other or not seal against each other. In the case of not sealing against each other, the second assembly part 313 can still be sealed due to the sealing fit between the sealing gasket 340 and the outer wall surface of the first wall 420 and the bottom wall 311.

[0178] The sealing gasket 340 is pressed between the bottom wall 311 and the outer wall surface of the first wall 420. The structure is simple and easy to assemble. The sealing gasket 340 achieves a seal between itself and the outer wall surface of the first wall 420, thereby sealing the mounting hole 411. This strengthens the interface fit of the housing structure 400, improves the sealing performance of the mounting hole 411, and thus improves the dustproof and waterproof performance of the battery device 10.

[0179] According to some embodiments of this application, optionally, such as Figures 10 to 11 As shown, the outer wall surface of the first wall 420 is provided with a limiting annular groove 316 and / or the side of the bottom wall 311 facing the first wall 420 is provided with a limiting annular groove 316. The limiting annular groove 316 is provided around the second assembly part 313, and the sealing gasket 340 is provided in the limiting annular groove 316.

[0180] The side of the bottom wall 311 facing the first wall 420 is the bottom surface 319 of the bottom wall 311.

[0181] For example, the outer wall surface of the first wall 420 can be recessed to form a limiting ring groove 316, and the outer wall surface of the first wall 420 can also be provided with a protruding limiting ring 315, which surrounds to form the limiting ring groove 316, and the sealing gasket 340 is disposed in the limiting ring groove 316.

[0182] For example, the bottom surface 319 of the bottom wall 311 can be recessed to form a limiting ring groove 316, and the bottom surface 319 of the bottom wall 311 can also be provided with a protruding limiting ring 315. The limiting ring 315 surrounds the travel limiting ring groove 316, and the sealing gasket 340 is disposed in the limiting ring groove 316.

[0183] Before the housing 310 is assembled with the first wall 420, the sealing gasket 340 may protrude slightly from the limiting ring groove 316; when the housing 310 is assembled with the first wall 420, under the pressing action of the housing 310 and the first wall 420, the sealing gasket 340 is squeezed and can be set flush with the limiting ring groove 316.

[0184] The limiting ring groove 316 can limit the sealing gasket 340, which facilitates the assembly and positioning of the sealing gasket 340. The limiting ring groove 316 can also position the assembly between the first wall 420 and the housing 310. When the part of the first wall 420 forming the limiting ring groove 316 contacts the bottom wall 311, or when the part of the bottom wall 311 forming the limiting ring groove 316 contacts the bottom wall 311, it can be considered that the assembly is in place. This can reduce the possibility that the sealing gasket 340 is excessively pressed, which may lead to sealing failure.

[0185] According to some embodiments of this application, optionally, a limiting protrusion 315 is provided on the outer wall surface of the first wall 420 and / or a limiting protrusion 315 is provided on the side of the bottom wall 311 facing the first wall 420. The limiting protrusion 315 is arranged around the second assembly part 313 and is spaced apart from the second assembly part 313 along the direction intersecting the arrangement direction from the bottom wall 311 to the first wall 420. A limiting ring groove 316 is formed between the limiting protrusion 315 and the second assembly part 313.

[0186] For example, such as Figures 9 to 11 As shown, a limiting protrusion 315 is provided on the bottom surface 319 of the bottom wall 311. The limiting protrusion 315 is sleeved on the root of the second assembly part 313 (the end where the second assembly part 313 connects to the bottom wall 311 is the root). There is a gap between the limiting protrusion 315 and the second assembly part 313. The sealing gasket 340 is sleeved on the root of the second assembly part 313 and located within the circumference of the limiting protrusion 315. The limiting protrusion 315 and the bottom wall 311 can be an integral structure or a separate assembly structure.

[0187] For example, the outer wall surface of the first wall 420 may also be provided with a limiting protrusion ring 315. The limiting protrusion ring 315 and the first wall 420 may be an integral structure or a separate assembly structure.

[0188] The limiting protrusion ring 315 can limit the sealing gasket 340, which facilitates the assembly and positioning of the sealing gasket 340. The limiting protrusion ring 315 can also enhance the strength of the assembly position between the first wall 420 and the housing 310, reducing the possibility of sealing gasket 340 being excessively compressed, or the bottom wall 311 and the first wall 420 being deformed, leading to sealing failure.

[0189] According to some embodiments of this application, optionally, the battery device 10 further includes a battery housing 13, the battery housing 13 having a battery compartment 131, and a single battery cell 101 disposed in the battery compartment 131. Figure 12 As shown, the battery housing 13 is at least partially configured as a housing structure 400, and the first wall 420 is a portion of the housing wall of the battery housing 13. Alternatively, the battery device 10 may also include an electrical control box, which is disposed outside the battery housing 13, and the housing of the electrical control box is at least partially configured as a housing structure 400.

[0190] The antenna assembly 300 is mounted on the battery box 13 or the electrical control box, making it easy to assemble and simple in structure.

[0191] like Figures 2 to 12As shown, this embodiment provides a battery device 10, including a battery housing 13, an electrical control box, multiple battery cells 101, a battery management component 210, a communication component 220, and an antenna component 300. The battery management component 210 is connected to each battery cell 101 and is used to monitor and manage the battery cells 101. The communication component 220 is disposed inside the electrical control box and is communicatively connected to the battery management component 210. The communication component 220 is a component for remote wireless communication. The electrical control box forms a housing structure 400, which has a first wall 420. A first assembly part 410 is provided on the first wall 420. The first assembly part 410 includes a threaded part 413 disposed on the inner wall surface of the first wall 420 and a mounting hole 411 penetrating the first wall 420. The threaded part 413 is welded to the inner wall surface of the first wall 420 and has a threaded hole. The thread and the mounting hole 411 are coaxially arranged. The antenna assembly 300 includes a housing 310 and an antenna 320 mounted within the housing 310. The antenna 320 is connected to the communication component 220 via a first wiring harness 330 to enhance the signal strength of the communication component 220. The housing 310 is disposed on the outside of the first wall 420 and has a bottom wall 311 facing the first wall 420. A second assembly portion 313 is integrally formed on the bottom wall 311. The second assembly portion 313 protrudes toward the first wall 420 relative to the bottom wall 311. The second assembly portion 313 is provided with a threaded post. The second assembly portion 313 passes through the mounting hole 411 and is threadedly connected to the threaded hole of the threaded member 413 to mount the antenna assembly 300 to the first wall 420. A cable outlet hole 312 is provided on the bottom wall 311, and a cable passage hole 314 is provided on the second assembly part 313. The cable outlet hole 312 corresponds to and is connected to the mounting hole 411. The cable outlet hole 312 connects to the interior of the housing structure 400. One end of the first wire harness 330 is fixedly connected to the antenna 320, and the other end of the first wire harness 330 passes through the cable outlet hole 312 and the cable passage hole 314 into the housing structure 400, and is connected to the communication component 220 through a connector. A sealing gasket 340 is pressed between the outer wall surface of the first wall 420 and the bottom wall 311. The sealing gasket 340 is sealed between the outer wall surface of the first wall 420 and the bottom wall 311. The sealing gasket 340 covers and seals the mounting hole 411. The sealing gasket 340 is sleeved on the second assembly part 313. A limiting protrusion ring 315 is provided on the side of the bottom wall 311 facing the first wall 420. The limiting protrusion ring 315 is arranged around the second assembly part 313 and is spaced apart from the second assembly part 313 along the direction intersecting the arrangement direction from the bottom wall 311 to the first wall 420. A limiting ring groove 316 is formed between the limiting protrusion ring 315 and the second assembly part 313. The sealing gasket 340 is disposed in the limiting ring groove 316.In this embodiment, the first wire harness 330 extending from the contact surface between the battery device 10, the antenna assembly 300, and the housing structure 400 can reduce the number of connectors used to connect the first wire harness 330 and the tightening strip used to secure the first wire harness 330. It can also shorten the length of the first wire harness 330, reduce labor and material costs, increase the aesthetics of the product appearance, and improve the maintainability of the antenna assembly 300. The antenna assembly 300 has built-in threads, improving assembly convenience. Furthermore, in this embodiment, the connection between the battery device 10, the antenna assembly 300, and the housing structure 400 only requires sealing at the mounting hole 411. A sealing gasket is sufficient to achieve a good seal. The sealing performance of the battery device 10 between the antenna assembly 300 and the housing structure 400 can reach IP67 (IP67 is a protection safety level; IP is an abbreviation for Ingress Protection Rating or International Protection code, which defines the protection capability of an interface against liquid and solid particles. IP is followed by two digits: the first digit represents the solid protection level, ranging from 0-6, indicating protection against everything from large foreign objects to dust; the second digit represents the liquid protection level, ranging from 0-8, indicating protection against everything from vertical water droplets to underwater pressure).

[0192] This embodiment also provides an electrical device, including a battery device 10 as proposed in this application or any embodiment of this application, the battery device 10 being used to store or provide electrical energy.

[0193] The electrical equipment in this embodiment can be any of the above-mentioned electrical equipment or systems.

[0194] The electrical equipment in this embodiment has the same beneficial effects as the battery device 10 proposed in this application or any embodiment of this application.

[0195] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0196] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0197] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the 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: Battery cell; The box structure has a first wall, on which a first assembly part is provided; A battery management component, connected to the battery cell, is used to monitor and manage the battery cell; A communication component is disposed within the housing structure and is communicatively connected to the battery management component; An antenna assembly includes a housing and an antenna mounted on the housing. The antenna is connected to the communication component to enhance the signal strength of the communication component. The housing is disposed on the outside of a first wall and has a bottom wall facing the first wall. A second assembly part is disposed on the bottom wall. The first assembly part and the second assembly part are fitted together and fixedly connected to each other to mount the antenna assembly on the first wall.

2. The battery device according to claim 1, characterized in that, The first assembly part and the second assembly part are detachably connected.

3. The battery device according to claim 1, characterized in that, One of the first assembly part and the second assembly part is configured to have a threaded hole, and the other is configured to have a threaded post, wherein the threaded post is threadedly connected to the threaded hole.

4. The battery device according to claim 1, characterized in that, The second assembly part and the bottom wall are an integral structure; And / or, the first assembly part and the first wall are an integral structure.

5. The battery device according to claim 1, characterized in that, The first assembly part includes a mounting hole disposed in the first wall, and the second assembly part protrudes toward the first wall relative to the bottom wall, and the second assembly part passes through the mounting hole.

6. The battery device according to claim 5, characterized in that, The first assembly part further includes a fastener; the fastener is at least partially disposed in the mounting hole, or the fastener is disposed on the inner wall surface of the first wall and is disposed corresponding to the position of the mounting hole; the second assembly part is fixedly connected to the fastener.

7. The battery device according to claim 6, characterized in that, The fastener is a threaded part with a threaded hole, and the second assembly part is threadedly connected to the threaded hole.

8. The battery device according to claim 6, characterized in that, The fasteners are fixedly installed on the first wall.

9. The battery device according to claim 1, characterized in that, The bottom wall is provided with a wire outlet hole, and the first wall is provided with a mounting hole. The wire outlet hole and the mounting hole are positioned corresponding to each other and are connected. The battery device also includes a first wire harness. The antenna and the communication component are connected to each other through the first wire harness. The first wire harness passes through the mounting hole and the wire outlet hole.

10. The battery device according to claim 9, characterized in that, The second assembly part protrudes from the bottom wall toward the first wall. The second assembly part passes through the mounting hole and has a wire hole. The wire hole passes through one end of the second assembly part toward the bottom wall and the other end of the second assembly part away from the bottom wall. The first wire harness passes through the wire hole.

11. The battery device according to any one of claims 5-10, characterized in that, The housing covers the mounting hole.

12. The battery device according to any one of claims 5-10, characterized in that, The antenna assembly also includes a seal configured to seal the mounting hole.

13. The battery device according to claim 12, characterized in that, The sealing element includes a sealing gasket, which is sealed between the outer wall surface of the first wall and the bottom wall. The sealing gasket covers and seals the mounting hole and is sleeved on the second assembly part.

14. The battery device according to claim 13, characterized in that, The outer wall surface of the first wall is provided with a limiting ring groove and / or the side of the bottom wall facing the first wall is provided with a limiting ring groove, the limiting ring groove is provided around the second assembly part, and the sealing gasket is provided in the limiting ring groove.

15. The battery device according to claim 14, characterized in that, A limiting protrusion ring is provided on the outer wall surface of the first wall and / or a limiting protrusion ring is provided on the side of the bottom wall facing the first wall. The limiting protrusion ring is provided around the second assembly part and along the direction intersecting the arrangement direction from the bottom wall to the first wall. The limiting protrusion ring is spaced apart from the second assembly part, and the limiting protrusion ring and the second assembly part form the limiting ring groove.

16. The battery device according to any one of claims 1-10, characterized in that, The battery device further includes a battery housing, the battery housing having a battery compartment, and the individual battery cells being disposed in the battery compartment; The battery housing is at least partially configured as the housing structure, and the first wall is a portion of the housing wall of the battery housing. Alternatively, the battery device further includes an electrical control box, which is disposed outside the battery housing, and the housing of the electrical control box is at least partially configured as the housing structure.

17. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-16, the battery device being used to provide or store electrical energy.

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