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 box body, a battery management system, an antenna assembly and at least one battery monomer, the box body is provided with a first wall, a wire passing hole is formed in the first wall, and the battery monomer is arranged in the box body; the battery management system is arranged in the box body and is connected with the single batteries; the antenna assembly is installed on the outer wall face of the first wall and comprises a box body, a first wire harness and an antenna arranged in the box body, the antenna is electrically connected with the battery management system through the first wire harness, the box body is provided with a box bottom wall facing the first wall, the box bottom wall is provided with a wire outlet hole, and the wire outlet hole corresponds to the wire passing hole in position and is communicated with the wire passing hole. The first wire harness passes through the wire outlet hole and the wire passing hole. The assembly convenience of the antenna assembly and the battery device is improved, the routing path of the first wire harness can be shortened, the space occupancy rate of the antenna assembly is reduced, the possibility of damage or failure of the first wire harness is reduced, and the reliability of the antenna assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, and in particular to a battery device and an electric equipment. BACKGROUND

[0002] The part provided in this part is only background information related to the present application, which is not necessarily prior art.

[0003] The battery device can store electric energy and can be widely used in electronic equipment, such as mobile phones, notebook computers, electric vehicles, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes and electric tools.

[0004] In some technologies, the battery device can be equipped with an antenna to realize wireless data transmission. How to improve the antenna reliability of the battery device has always been the focus in the development process of the battery device. UTILITY MODEL CONTENT

[0005] In view of the above problems, the present application provides a battery device and an electric equipment to improve the setting reliability of the antenna assembly of the battery device.

[0006] The first aspect of the present application provides a battery device, comprising a box body, a battery management system, an antenna assembly and at least one battery monomer, the box body has a first wall, the first wall is provided with a wire passing hole; the at least one battery monomer is arranged in the box body; the battery management system is arranged in the box body and connected with the battery monomer, the battery management system is used for collecting battery data of the at least one battery monomer, and monitoring and managing the battery monomer based on the battery data; the antenna assembly is used for enhancing the signal strength of the battery management system and sending the battery data to a server, the antenna assembly is installed on the outer wall surface of the first wall and comprises a box body, a first wire harness and an antenna arranged in the box body, the antenna is electrically connected with the battery management system through the first wire harness, the box body has a box bottom wall facing the first wall, the box bottom wall is provided with a wire outlet hole, the wire outlet hole corresponds to the position of the wire passing hole and is in communication with the wire passing hole, and the first wire harness is arranged in the wire outlet hole and the wire passing hole.

[0007] In the technical scheme of the present application, the wire outlet hole of the antenna assembly is arranged on the side of the box body facing the box body, and the wire outlet hole of the antenna assembly corresponds to the position of the wire passing hole of the box body (the box body of the battery device) and is in communication with the wire passing hole. The first wire harness can directly pass into the wire passing hole from the wire outlet hole. The first wire harness has convenient wire arrangement and simple structure, improves the assembly convenience of the antenna assembly and the battery device, can shorten the wire arrangement path of the first wire harness, reduces the space occupancy rate of the antenna assembly, reduces the possibility of exposure of the first wire harness, and further reduces the possibility of damage or failure of the first wire harness, and improves the reliability of the antenna assembly.

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

[0009] In some embodiments of the present application, the box body covers the wire passing hole. Covering the wire passing hole with the box body can reduce the possibility of exposure of the first wire harness, improve the aesthetics of the box body, and improve the dustproof and waterproof performance of the wire passing hole. In addition, covering the wire passing hole with the box cover can integrate the sealing between the wire passing hole of the box body, the wire outlet hole of the box body, and the first wire harness, thereby reducing the sealing complexity of the wire outlet hole of the box body and the wire passing hole of the box body, and facilitating assembly.

[0010] In some embodiments of the present application, the wire outlet hole is coaxially arranged with the wire passing hole. The wire harness of the first wire harness between the wire outlet hole and the wire passing hole is relatively smooth, which improves the assembly convenience of the antenna assembly and reduces the possibility of damage to the first wire harness due to wire harness.

[0011] In some embodiments of the present application, a limiting piece is arranged between the box bottom wall and the first wire harness, and the limiting piece is arranged to limit the movement of the first wire harness relative to the wire outlet hole. By arranging the limiting piece, the possibility of the first wire harness separating from the box body through the wire outlet hole can be reduced, which can reduce the possibility of separating the first wire harness from the antenna when pulling the first wire harness, and improve the connection reliability between the first wire harness and the antenna. At the same time, it can also reduce the possibility that the end of the first wire harness used for connecting with the battery management system enters the box body, thereby making it difficult to take out the first wire harness and making assembly more troublesome.

[0012] In some embodiments of the present application, the limiting piece is fixed to the inner wall surface of the box bottom wall, and the limiting piece is sleeved and fixed to the first wire harness. The first wire harness is sleeved and fixed to the limiting piece, which is simple in structure and convenient to assemble.

[0013] In some embodiments of the present application, part of the box bottom wall is recessed towards the side where the first wall is located, the wire outlet hole is arranged in the recessed part, and the limiting piece is arranged in the recessed part. By recessing the first wall to form a recessed part, the limiting piece and the first wire harness can be better positioned by cooperating with the recessed part, which is convenient to assemble and has good firmness after assembly.

[0014] In some embodiments of the present application, the battery device further comprises a sealing piece arranged to seal the wire passing hole. The sealing piece can improve the sealing performance of the box body and improve the dustproof and waterproof performance of the battery device.

[0015] In some embodiments of the present application, the sealing member comprises a sealing gasket, which is arranged between the bottom wall of the box and the outer wall surface of the first wall and covers the wire passing hole. The sealing gasket is provided with an assembly hole, and the first wire harness is arranged in the assembly hole. The sealing gasket is arranged between the bottom wall of the box and the outer wall surface of the first wall, which is simple in structure and convenient to assemble. The sealing gasket is sealed with the outer wall surface of the first wall, which seals the wire passing hole, enhances the interface matching of the box, improves the sealing performance of the wire passing hole, and further improves the dustproof and waterproof performance of the battery device.

[0016] In some embodiments of the present application, part of the bottom wall of the box is recessed towards the side where the first wall is located, and the wire passing hole is arranged in the recessed part. The first wire harness is arranged in the recessed part and passes through the recessed part to the assembly hole. The sealing gasket is sealed with the outer peripheral wall of the recessed part. The sealing gasket is sealed with the outer peripheral wall of the recessed part, which improves the sealing performance of the wire passing hole, and further improves the dustproof and waterproof performance of the battery device.

[0017] In some embodiments of the present application, the sealing gasket is provided with a sealing ring sleeve towards the side of the first wall. The sealing ring sleeve surrounds the assembly hole and is arranged in the recessed part and sealed with the recessed part. The sealing ring sleeve is arranged in the recessed part and sealed with the recessed part, which improves the sealing performance of the wire passing hole, and further improves the dustproof and waterproof performance of the battery device.

[0018] In some embodiments of the present application, the sealing gasket is provided with a sealing ring sleeve towards the side of the wire passing hole. The sealing ring sleeve surrounds the assembly hole and is arranged in the wire passing hole and sealed with the inner wall of the wire passing hole. The sealing ring sleeve is arranged in the wire passing hole and sealed with the inner wall of the wire passing hole, which improves the sealing performance of the wire passing hole, and further improves the dustproof and waterproof performance of the battery device.

[0019] In some embodiments of the present application, part of the bottom wall of the box is recessed to form a groove towards the direction away from the first wall. The sealing gasket is arranged in the groove and sealed with the groove. The bottom wall of the box is recessed to form a groove, which can accommodate the sealing gasket, reduces the size of the antenna assembly protruding relative to the first wall, and improves the space utilization. The groove cooperates with the sealing gasket to improve the sealing performance between the sealing gasket and the bottom wall of the box.

[0020] In some embodiments of the present application, a sealing protruding ring is arranged on one side of the sealing gasket facing the first wall, the sealing protruding ring is arranged around the assembly hole, and the sealing protruding ring is pressed against the outer wall surface of the first wall. By arranging the sealing protruding ring, a seal is formed between the sealing gasket and the outer wall surface of the first wall, thereby improving the sealing performance of the box.

[0021] In some embodiments of the present application, a plurality of sealing protruding rings are arranged, the plurality of sealing protruding rings are arranged in a direction intersecting the axis of the assembly hole, and adjacent two sealing protruding rings are arranged in a sleeved manner. By arranging a plurality of sealing protruding rings, a multilayer seal is formed between the sealing gasket and the outer wall surface of the first wall. When one of the sealing protruding rings fails, the sealing gasket and the outer wall surface of the first wall still have good sealing effect, which can reduce the possibility of seal failure of the through hole and improve the sealing performance of the box.

[0022] In some embodiments of the present application, the box body and the first wall are detachably connected. The antenna assembly is detachably connected to the first wall through the box body, which is convenient for disassembly, maintenance and assembly of the antenna assembly.

[0023] In some embodiments of the present application, the box body and the first wall are connected through a plurality of fasteners. The box body of the antenna assembly and the box body of the battery device are connected through fasteners, which is convenient for disassembly and assembly, and has good connection stability.

[0024] In some embodiments of the present application, the first wire harness is provided with a first connector at one end away from the antenna, the first connector is arranged in the box, and the first wire harness is electrically connected to the battery management system through the first connector. The first wire harness and the battery management system are connected through the first connector and the second connector, which facilitates replacement or maintenance of the antenna assembly.

[0025] In some embodiments of the present application, the battery management system comprises a battery management component and a communication component, the battery management component is communicatively connected to the communication component, the communication component is used for realizing data transmission of the battery management system, and the antenna assembly is electrically connected to the communication component through the first wire harness. By arranging the communication component, data, position information and the like of the battery device can be transmitted back to the server in real time, which facilitates the server to manage and locate the assets of the battery device. The battery device can be monitored throughout the life cycle by combining big data means, thereby improving the service life of the battery device.

[0026] The second aspect of the present application provides a power utilization equipment comprising the battery device provided by the present application or any embodiment of the present application, and the battery device is used for providing or storing electric energy.

[0027] The electric device has the same beneficial effects as the battery device provided by the application or any embodiment of the application.

[0028] The above description is only a summary of the technical solutions of the application. In order to make the technical means of the application more clear, the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings indicate the same or similar components. In the drawings:

[0030] Figure 1 A structural schematic diagram of a vehicle provided for some embodiments of the application;

[0031] Figure 2 A schematic diagram of a battery device provided for some embodiments of the application;

[0032] Figure 3 A schematic diagram of a battery cell provided for some embodiments of the application;

[0033] Figure 4 A schematic diagram of the communication connection of an electric device, a battery device and a cloud server provided for some embodiments of the application;

[0034] Figure 5 A structural schematic diagram of a part of the structure of a battery device provided for some embodiments of the application from one perspective;

[0035] Figure 6 A schematic diagram of a part of the structure of a battery device provided for some embodiments of the application from another perspective; Figure 5 An enlarged view of part A of the schematic diagram;

[0036] Figure 7 A schematic diagram of a part of the structure of a battery device provided for some embodiments of the application from another perspective;

[0037] Figure 8 An assembly sectional view of a box (first wall) and an antenna assembly of a battery device provided for some embodiments of the application;

[0038] Figure 9 A structural schematic diagram of an antenna assembly provided for some embodiments of the application from one perspective;

[0039] Figure 10 A sectional view of an antenna assembly provided for some embodiments of the application;

[0040] Figure 11 This is a schematic diagram of the antenna assembly proposed in some embodiments of this application from another perspective;

[0041] Figure 12 This is a schematic diagram of the structure of the first wall proposed in some embodiments of this application;

[0042] Figure 13 This is a schematic diagram illustrating the communication connection between the battery management system, antenna assembly, and cloud server in some embodiments of this application.

[0043] The reference numerals in the detailed embodiments are as follows:

[0044] 1. Cloud server;

[0045] 1000. Vehicle; 10. Battery unit; 11. First housing; 12. Second housing; 13. Housing; 131. Energy storage compartment; 132. Functional compartment; 133. First wall; 134. Wiring hole; 135. Reinforcing cylinder; 20. Controller; 30. Motor; 40. Vehicle-end high voltage box; 41. Main control module; 50. Third wiring harness;

[0046] 100. Battery cell assembly; 101. Battery cell; 110. Casing; 111. Housing; 112. End cap; 113. Electrode terminal; 120. Electrode assembly; 121. Tab;

[0047] 200. Battery management system; 210. Battery management component; 211. Second wiring harness; 2111. Wire; 2112. Communication line; 220. Communication component; 221. Data transmission component; 222. Data processing component; 223. Second connector; 230. Positioning component; 240. Mounting base;

[0048] 300. Antenna assembly; 310. Housing; 311. Bottom wall of housing; 312. Top surface; 3121. Recessed area; 313. Recessed part; 314. Outlet hole; 315. Cover; 316. Base; 317. Limiting component; 320. Antenna; 340. First wiring harness; 341. First connector; 350. Fastener; 351. Bolt assembly; 352. First assembly hole; 353. Second assembly hole; 360. Sealing gasket; 361. Sealing ring sleeve; 362. Sealing protrusion ring. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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).

[0055] 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.

[0056] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0057] 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 consists of one or more individual battery cells. A battery management system can be installed within the device to monitor the status of the individual cells and provide adaptive management during operation.

[0058] In some technologies, the battery device may also be equipped with an antenna assembly that enables data transmission of the battery management system. For example, the antenna assembly may be combined with a communication component to enable data transmission between the battery management system and a server.

[0059] The antenna assembly is usually located on the outside of the battery pack housing. Communication cable sections extend from the side of the antenna assembly. The housing (battery pack housing) has a header located at a distance from the antenna assembly. On the outside of the housing, the communication cable sections extend from the antenna assembly to the header and pass through the header to connect to the battery management system inside the battery pack.

[0060] Studies have found that a significant portion of the communication line in antenna assemblies is exposed, and these lines are typically pre-existing with considerable length. In actual assembly, clamps are usually required to hold and secure the excessively long communication lines, resulting in a complex structure, large space requirements, poor aesthetics, and increased susceptibility to damage to the communication lines, leading to communication failures and reduced reliability of the antenna assembly.

[0061] Based on the above research, in order to improve the reliability of the antenna assembly and the ease of assembly, this application provides a battery device. The antenna assembly of the battery device has a wire outlet hole on the side facing the housing. The wire outlet hole corresponds to and is connected to the wire passage hole provided on the housing.

[0062] The first wiring harness can be pre-assembled and fixed to the antenna assembly. The portion of the first wiring harness connected to the antenna assembly that exits through the exit hole can directly pass through the through hole and then electrically connect to the battery management system inside the battery device. Alternatively, the first wiring harness can be pre-assembled and fixed to the battery management system. After passing through the through hole, the first wiring harness connected to the battery management system can directly enter the housing assembly through the exit hole. Because the exit hole and through hole correspond, the wiring of the first wiring harness is convenient and the structure is simple, improving the ease of assembly between the antenna assembly and the battery device. Furthermore, it can shorten the wiring path of the first wiring harness, reduce the space occupation of the antenna assembly, reduce the possibility of the first wiring harness being exposed, improve the aesthetics of the battery device, reduce the possibility of damage or failure of the first wiring harness, improve the reliability of the antenna assembly, and reduce the cost of the battery device.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] In some embodiments, the battery cell assembly 100 is typically formed by arranging a plurality of battery cells 101.

[0069] 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.

[0070] In some embodiments, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the battery device according to some embodiments of this application. The battery device 10 can be a battery pack, which includes a housing 13 and one or more battery cell assemblies 100, with the battery cell assemblies 100 housed in the housing 13.

[0071] As an example, the battery cell assembly 100 can be a battery module, and the battery cell assembly 100 can be housed in the housing 13 by fixing the battery module in the housing 13.

[0072] As an example, the battery cell assembly 100 can also be housed in the housing 13 by directly fixing multiple battery cells 101 to the housing 13.

[0073] As an example, such as Figure 2 As shown, the 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 to form a closed space inside the housing 13 to house the battery cell assembly 100. Here, "closed" refers to covering or closing, which can be sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0074] As an example, the 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 housing 13 forms an enclosed space to house the battery cell assembly 100.

[0075] In some embodiments, the housing 13 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 13 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 13 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] like Figure 3 As shown, Figure 3 The diagram below shows a split view of a battery cell 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.

[0081] 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.

[0082] Electrode terminal 113 is electrically connected to tab 121. Electrode terminal 113 can be directly connected to tab 121, or indirectly connected to tab 121 through current collector. Electrode terminal 113 can be disposed on end cap 112 or on housing 111.

[0083] 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.

[0084] 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.).

[0085] 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.

[0086] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0087] 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.).

[0088] 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.

[0089] 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.

[0090] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells.

[0091] 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.

[0092] like Figure 4 As shown, Figure 4This is a schematic diagram illustrating the communication connection between an electrical device, a battery device, and a cloud server according to some embodiments of this application. The battery device 10 may further include a battery management system 200, which is used to monitor and manage individual battery cells 101. The battery management system 200 can monitor battery data such as current, voltage, power, or temperature of the individual battery cells 101. For example, it can control the charging and discharging current and voltage of the individual battery cells 101. The battery management system 200 includes a battery management component 210, which is a battery management unit. The battery management component 210 includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0093] 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).

[0094] like Figure 4 As shown, the battery management system 200 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 central control module 41. Optionally, the control unit of the electrical equipment (e.g., the controller 20 of the vehicle 1000) can communicate with the central control module 41 via a wiring harness (refer to the third wiring harness 50), and the central control module 41 can be connected to the battery management system 200 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 central control module 41 can be located in the high-voltage box 40 at the vehicle end.

[0095] In some embodiments, the battery management system 200 may optionally include a communication component 220, which serves as a data communication bridge between the battery device 10 and the server, enabling communication between the battery management system 200 (i.e., battery management component 210) and the server. The server may be a cloud server 1, or a server for an electrical device, such as a vehicle-side controller 20; the server may also be a service station server or a host computer for the battery device 10.

[0096] For example, the server can be a cloud server 1, which can 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. The communication component 220 is a component used to implement remote data transmission. For example, the communication component 220 can be an RDB transmission component (an RDB transmission component is a remote data transmission component, where R represents remote, D represents database, and B represents bridge or box). The functions of the communication component 220 include: transmitting data from the battery device 10 back to the cloud server 1; periodically transmitting data back to the cloud server 1 when the vehicle 1000 is powered down (power down refers to the start of the vehicle 1000's electrical system, including the power supply of low-voltage and high-voltage systems); controlling commands issued by the cloud server 1, which may include controlling the battery device 10; adjusting the data transmission period of the battery device 10 (transmission refers to the process of transmitting data back to the cloud server 1); and remotely upgrading the relevant software of the battery device 10, for example, upgrading the software of the battery management system 200 via OTA (Over-The-Air, a method for remotely updating device firmware or software through wireless communication technology). In some implementations, the communication component 220 may also have the function of locating the position information of the battery device 10.

[0097] The communication component 220 and the battery management component 210 can be separately configured, and 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 configured power supply wire 2111 and a communication line 2112 (e.g., CAN line) for data transmission.

[0098] In some embodiments, such as Figure 4 As shown, the battery device 10 also includes an antenna assembly 300, which can be connected to the communication component (which may be a wireless communication component) of the battery management system 200 to enhance the signal and improve the stability and range of data transmission.

[0099] For example, the antenna assembly 300 can be electrically connected to the communication assembly 220 to enable wireless remote data transmission between the battery management system 200 and the cloud server 1.

[0100] Antenna 320 may include antenna 320 that enhances the signal of data transmission component 221, such as a 4G antenna provided for 4G communication component, a 3G antenna provided for 3G communication component and / or a 5G antenna provided for 5G communication component, etc., and these antennas 320 can enhance the signal strength of cellular network.

[0101] When the communication component 220 is equipped with a positioning component 230, the antenna 320 may also include a component that enhances the positioning signal, such as a GNSS antenna corresponding to the GNSS positioning module, which enhances the GNSS satellite reception signal strength and performs searches for BeiDou satellites.

[0102] like Figures 2 to 4 and combined Figures 5 to 12 As shown, Figure 5 This is a schematic diagram of a portion of the battery device proposed in some embodiments of this application, taken from one perspective. Figure 6 for Figure 5 Enlarged view of part A, Figure 7 This is a schematic diagram showing another perspective of the partial structure of the battery device proposed in some embodiments of this application. Figure 8 This is a schematic cross-sectional view of the battery device housing (first wall 133) and antenna assembly in some embodiments of this application. Figure 9 This is a schematic diagram of the antenna assembly proposed in some embodiments of this application from one perspective. Figure 10 This is a cross-sectional schematic diagram of an antenna assembly proposed in some embodiments of this application. Figure 11 This is a schematic diagram of the antenna assembly proposed in some embodiments of this application from another perspective. Figure 12This is a schematic diagram of the structure of the first wall proposed in some embodiments of this application. Embodiments of this application propose a battery device 10, including a housing 13, a battery management system 200, an antenna assembly 300, and at least one battery cell 101. The housing 13 has a first wall 133, on which a wire-through hole 134 is provided. The at least one battery cell 101 is disposed within the housing 13. The battery management system 200 is disposed within the housing 13 and connected to the battery cell 101. The battery management system 200 is used to collect battery data from the at least one battery cell 101 and monitor the battery cell 101 based on the battery data. The antenna assembly 300 is used to enhance the signal strength of the battery management system 200 and to send the battery data to the server. The antenna assembly 300 is installed on the outer wall of the first wall 133 and includes a housing 310, a first wiring harness 340 and an antenna 320 disposed in the housing 310. The antenna 320 is electrically connected to the battery management system 200 through the first wiring harness 340. The housing 310 has a bottom wall 311 facing the first wall 133. The bottom wall 311 is provided with a wire outlet hole 314. The wire outlet hole 314 corresponds to and is connected to the wire through hole 134. The first wiring harness 340 passes through the wire outlet hole 314 and the wire through hole 134.

[0103] In this embodiment, the antenna 320 and the battery management system 200 are electrically connected, focusing on enabling the transmission of data or signals between the two. In some cases, the battery management system 200 can also provide power to the antenna 320.

[0104] like Figure 5 and Figure 7 As shown, the housing 13 can be divided into an energy storage compartment 131 and a functional compartment 132. The energy storage compartment 131 is used to house individual battery cells 101, and the functional compartment 132 is used to house components such as the battery management assembly 210.

[0105] The battery cell 101 may include one or more, and all battery cells 101 may be disposed within the housing 13.

[0106] The first wall 133 can be any wall of the enclosure 13, including the top wall, bottom wall, or any side wall. The outer wall surface of the first wall 133 refers to the side of the first wall 133 that faces away from the interior of the enclosure 13, i.e., the exposed wall surface of the first wall 133. The wire hole 134 passes through the outer and inner wall surfaces of the first wall 133 to connect the inside and outside of the enclosure 13.

[0107] The antenna assembly 300 is installed on the outer wall surface of the first wall 133, which can be understood as the antenna assembly 300 being exposed on the outer side of the first wall 133.

[0108] For example, such as Figures 5 to 7As shown, the antenna assembly 300 can be disposed on the surface of the outer wall of the first wall 133 and protrude from the outer wall of the first wall 133.

[0109] For example, the antenna assembly 300 can be embedded in the outer wall surface of the first wall 133. Specifically, the outer wall surface of the first wall 133 can be provided with a groove, and the antenna assembly 300 can be disposed in the groove and completely located in the groove; or, the antenna assembly 300 can be installed in the groove and partially protrude from the groove.

[0110] Antenna 320 is the core component of antenna assembly 300. Antenna 320 is a transducer that can convert guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or vice versa. Antenna 320 can transmit and receive electromagnetic waves and has the function of amplifying signals.

[0111] The antenna 320 may include a circuit board and related components disposed on or connected to the circuit board. For example, the main body of the antenna 320 may be made of metal.

[0112] Antenna 320 can be configured in one or more ways as needed. For example, antenna 320 may include a 4G antenna corresponding to a 4G communication component, a 3G antenna corresponding to a 3G communication component, and / or a 5G antenna corresponding to a 5G communication component, etc. These antennas 320 can enhance the cellular network signal strength. When the communication component 220 is equipped with a positioning component 230, antenna 320 may also include a component that enhances the positioning signal, such as a GNSS antenna corresponding to a GNSS positioning module. The GNSS antenna enhances the GNSS satellite reception signal strength for searching for BeiDou satellites, etc.

[0113] The housing 310 serves as the mounting carrier for the antenna 320. An accommodating 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 133, and this bottom wall 311 can at least partially contact the outer surface of the first wall 133. The housing 310 can be made of a non-signal shielding material, such as a non-metallic material, specifically a plastic box, to reduce its signal shielding effect.

[0114] The box body 310 can be assembled from two parts that are snapped together. These two parts can be detachably connected or non-detachably connected by bonding, welding, or other methods.

[0115] For example, the box body 310 may include a box body and a box lid. The box body has an opening, and the box lid is placed on the box body to form a receiving cavity. The bottom wall of the box body forms a box bottom wall 311, which is fitted and connected to the box body 13. The opening of the box body faces away from the box body 13. The box body and the box lid may be sealed with glue and fixed with screws or other fasteners.

[0116] For example, such as Figures 8 to 11 As shown, the box body 310 may also include a base 316 and a cover 315. The cover 315 covers the base 316 to form a receiving cavity. The base 316 may form the bottom wall 311 of the box and may be connected to the box body 13. The cover 315 is located on the side of the base 316 away from the box body 13. The base 316 and the cover 315 may be sealed by a sealing structure such as glue, sealing ring, or sealing platform, and the base 316 and the cover 315 may be fixed with screws or other fasteners.

[0117] The cable outlet 314 can connect the inside and outside of the housing 310, and the cable outlet 314 can be set on the first surface of the housing 310. The cable outlet 314 and the cable through hole 134 can be aligned at the center.

[0118] The connection between the housing 310 of the antenna assembly 300 and the outer wall of the first wall 133 can be either detachable or non-detachable. A detachable connection means that the connected components (in this embodiment, the housing 310 of the antenna assembly 300 and the outer wall of the first wall 133) 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 means that once connected, it is difficult or impossible to disassemble without damaging the components. Non-detachable connections can include welding, riveting, adhesive bonding, etc. It should be noted that when the antenna assembly 300 and the outer wall of the first wall 133 are connected in a non-detachable manner, if it is necessary to disassemble the antenna assembly 300, the focus can be on damaging the antenna assembly 300 or the connecting piece between the antenna assembly 300 and the housing 13 to reduce damage to the housing 13.

[0119] The first wiring harness 340 can be a data cable that has both power supply and data transmission functions. Of course, the first wiring harness 340 can also include a power supply wire 2111 and a communication line 2112 (e.g., CAN line) for data transmission, which are separately configured.

[0120] The first wiring harness 340 and the antenna 320 can be detachably connected or non-detachably connected; the first wiring harness 340 and the battery management system 200 can be detachably connected or non-detachably connected.

[0121] For example, the first wiring harness 340 can be integrated into the antenna assembly 300. The other end of the first wiring harness 340 is exposed on the outside of the wire outlet hole 314. When assembling the antenna assembly 300 into the housing 13, the exposed end of the first wiring harness 340 passes through the wire outlet hole 134 of the first wall 133 and enters the housing 13 to be electrically connected to the battery management system 200. The first wiring harness 340 and the battery management system 200 can be detachably connected or non-detachably fixedly connected.

[0122] For example, the first wiring harness 340 can also be integrated into the battery management system 200. When assembling the antenna assembly 300 into the housing 13, the first wiring harness 340 passes through the wire hole 134 of the first wall 133 and the wire outlet hole 314 of the housing 310 from inside the housing 13 and enters the housing 310 to be electrically connected to the antenna 320. The first wiring harness 340 and the antenna 320 can be detachably connected or non-detachably fixedly connected.

[0123] It should be noted that when the first wiring harness 340 and the antenna 320 (or the first wiring harness 340 and the battery management system 200) are detachably connected, both the electrical connection and the mechanical connection between the two can be set to be detachable.

[0124] In this embodiment, the battery device 10 has a first wiring harness 340 that can be pre-assembled and fixed with the antenna assembly 300. The portion of the first wiring harness 340 connected to the antenna assembly 300 that passes through the outlet hole 314 can directly pass through the through hole 134 and then be electrically connected to the battery management system 200 inside the battery device 10. Alternatively, the first wiring harness 340 can be pre-assembled and fixed with the battery management system 200. After passing through the through hole 134, the first wiring harness 340 connected to the battery management system 200 can directly enter the housing 310 assembly through the outlet hole 314. Since the outlet hole 314 corresponds to and is connected to the through hole 134, the first wire harness 340 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 fit of the housing 13, and can shorten the routing path of the first wire harness 340, reduce the space occupancy of the antenna assembly 300, reduce the possibility of the first wire harness 340 being exposed, improve the aesthetics of the battery device 10, reduce the possibility of damage or failure of the first wire harness 340, improve the reliability of the antenna assembly 300, and reduce the cost of the battery device 10.

[0125] According to some embodiments of this application, optionally, such as Figures 5 to 12 As shown, the box 310 covers the wire hole 134.

[0126] In other words, the orthographic projection of the box 310 onto the first wall 133 can cover the wire hole 134, and the wire hole 134 is not exposed under the covering effect of the box 310.

[0127] For example, the area of ​​the bottom wall 311 of the box body 310 is larger than the area of ​​the wire hole 134, and the circumferential edge of the bottom wall 311 surrounds the circumferential outer side of the wire hole 134.

[0128] The enclosure 310 covers the cable passage hole 134, reducing the possibility of the first wire harness 340 being exposed and improving the aesthetics of the enclosure 13. Furthermore, the enclosure 310 covering the cable passage hole 134 improves the dustproof and waterproof performance of the cable passage hole 134. Moreover, with the cover covering the cable passage hole 134, the sealing between the cable passage hole 134 of the enclosure 13, the cable outlet hole 314 of the enclosure 310, and the first wire harness 340 can be integrated, reducing the sealing complexity of the cable outlet hole 314 of the enclosure 310 and the cable passage hole 134 of the enclosure 13, making assembly simple and convenient.

[0129] According to some embodiments of this application, optionally, such as Figure 8 As shown, the cable outlet 314 and the cable passage 134 are coaxially arranged.

[0130] It should be noted that the cable outlet hole 314 and the cable passage hole 134 are approximately coaxial, which means they can be considered to be coaxial. In other words, even if the centers of the cable outlet hole 314 and the cable passage hole 134 are offset within the machining error range, they can still be considered to be coaxial.

[0131] The cable exit hole 314 and the cable passage hole 134 are coaxially arranged, and the routing of the first wire harness 340 between the cable exit hole 314 and the cable passage hole 134 is relatively smooth, which improves the ease of assembly of the antenna assembly 300 and reduces the possibility of the first wire harness 340 being twisted or squeezed due to routing.

[0132] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, a limiting member 317 is provided between the bottom wall 311 of the box and the first wire harness 340. The limiting member 317 is configured to restrict the movement of the first wire harness 340 relative to the wire outlet hole 314.

[0133] In this embodiment, one end of the first wire harness 340 is fixedly connected to the antenna 320, and the other end of the first wire harness 340 passes through the wire outlet hole 314 of the bottom wall 311 of the box and is exposed on the outside of the box body 310.

[0134] The limiting member 317 is configured to restrict the movement of the first wire harness 340 relative to the outlet hole 314. This means that the limiting member 317 can both restrict the first wire harness 340 from leaving the box 310 from the outlet hole 314 and restrict the first wire harness 340 from falling into the box 310 from the through hole 134.

[0135] The limiting member 317 can mechanically fix the first wire harness 340 to the bottom wall 311 of the box. Thus, under the action of the limiting member 317, the first wire harness 340 is restricted from leaving the box 310 through the wire outlet 314, and the first wire harness 340 is also restricted from falling into the box 310 through the wire passage 134.

[0136] For example, the limiting member 317 can be sleeved with the first wire harness 340 and fixed with sealant, and the limiting member 317 is bonded to the bottom wall 311 of the box.

[0137] For example, the limiting member 317 can also be snapped and fixed to the first wire harness 340, and the limiting member 317 is fixedly connected to the bottom wall 311 of the box by a buckle or screw.

[0138] By setting the limiting member 317, the possibility of the first wire harness 340 detaching from the outlet hole 314 and leaving the housing 310 can be reduced. This reduces the possibility of the first wire harness 340 separating from the antenna 320 when the first wire harness 340 is pulled, thus improving the connection reliability between the first wire harness 340 and the antenna 320. At the same time, it also reduces the possibility that the end of the first wire harness 340 used to connect to the battery management system 200 may enter the housing 310, making the first wire harness 340 difficult to remove and more troublesome to assemble.

[0139] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, the limiting member 317 is fixed to the inner wall surface of the bottom wall 311 of the box, and the limiting member 317 is sleeved and fixed to the first wire harness 340.

[0140] The limiting member 317 may be provided with a through hole, and the first wire harness 340 passes through the through hole. The first wire harness 340 and the limiting member 317 can be sealed and fixed by glue or sealing ring.

[0141] The limiting member 317 can be fitted to the bottom wall 311 of the box and fixed with glue or screws.

[0142] The first wire harness 340 is threaded through and fixed to the limiting member 317, resulting in a simple structure and easy assembly. By setting the limiting member 317, the possibility of the first wire harness 340 detaching from the housing 310 through the wire outlet 314 can be reduced. This reduces the possibility of the first wire harness 340 separating from the antenna 320 when the first wire harness 340 is pulled, thus improving the connection reliability between the first wire harness 340 and the antenna 320. At the same time, it also reduces the possibility that the end of the first wire harness 340 used to connect to the battery management system 200 may enter the housing 310, making the first wire harness 340 difficult to remove and causing complicated assembly.

[0143] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, a recessed portion 313 is recessed on the side of the bottom wall 311 facing the first wall 133, a wire outlet hole 314 is disposed in the recessed portion 313, and a limiting member 317 is disposed in the recessed portion 313.

[0144] The inner surface of the recess 313 can be considered as part of the inner wall surface of the bottom wall 311 of the box. The limiting member 317 and the recess 313 can be sealed to improve the sealing performance of the box body 310 corresponding to the position of the cable outlet 314.

[0145] For example, the limiting member 317 can be interference-sealed and fixed in the recess 313, or the limiting member 317 can be disposed in the recess 313 and fixedly connected and sealed to the recess 313 by adhesive.

[0146] For example, the limiting member 317 may be partially protruding into the outlet hole 314, and the limiting member 317 and the outlet hole 314 are sealed together. The first wire harness 340 passes through the limiting member 317 and is sealed together with the limiting member 317.

[0147] For example, the cable outlet 314 can be provided on the end face of the recess 313 (the end of the recess 313 away from the main body of the bottom wall 311 of the box). Optionally, the radial dimension of the end face of the recess 313 is larger than the radial dimension of the cable outlet 314, and the cable outlet 314 can be provided in the central region of the end face of the recess 313.

[0148] When assembling the antenna assembly 300, the first wire harness 340 and the limiting member 317 can be assembled into one piece, and then the limiting member 317 and the first wire harness 340 can be assembled together to the bottom wall 311 (base 316) of the box, and then the cover 315 can be assembled onto the bottom wall 311 of the box.

[0149] The recessed portion 313 is formed by the first wall 133. The limiting member 317 cooperates with the recessed portion 313, which can better position the limiting member 317 and the first wire harness 340. It is easy to assemble and has good firmness after assembly.

[0150] According to some embodiments of this application, the battery device 10 may optionally include a seal configured to seal the wire hole 134.

[0151] For example, the seal can be a sealing ring, which can be disposed inside the wire hole 134 and sleeved on the outside of the first wire harness 340 or the recess 313 to seal the wire hole 134.

[0152] For example, the seal can also be a sealing gasket 360. The sealing gasket 360 can be disposed at one end of the wire hole 134 facing inward toward the housing 13, or at the other end of the wire hole 134 facing outward toward the housing 13. The sealing gasket 360 covers and seals the wire hole 134, and the first wire harness 340 can pass through the sealing gasket.

[0153] By setting up sealing elements, the sealing performance of the housing 13 can be improved, and the dustproof and waterproof performance of the battery device 10 can be improved.

[0154] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, the sealing element includes a sealing gasket 360, which is pressed between the bottom wall 311 of the box and the outer wall surface of the first wall 133. The sealing gasket 360 covers the sealing wire hole 134 and has an assembly hole. The first wire harness 340 passes through the assembly hole in a sealed manner.

[0155] The sealing gasket 360 can be pressed and fixed to the outer wall surface of the first wall 133 by the box body 310.

[0156] A sealing gasket is a structure with a certain degree of elasticity or flexibility; it can be a rubber gasket, a soft plastic gasket, etc.

[0157] A sealing gasket 360 is disposed on the outer wall surface of the first wall 133. The sealing gasket 360 covers the end of the wire hole 134 facing outward from the housing 13. The sealing gasket 360 achieves the sealing of the wire hole 134 by sealing the surface between itself and the outer wall surface of the first wall 133.

[0158] The mounting hole of the sealing gasket 360 is for the first wire harness 340 to pass through. Optionally, the first wire harness 340 can directly pass through the mounting hole of the sealing gasket 360. Optionally, the recess 313 of the bottom wall 311 of the housing can pass through the mounting hole of the sealing gasket 360, and the first wire harness 340 can also pass through the mounting hole of the sealing gasket 360 by passing through the recess 313.

[0159] The sealing gasket 360 is pressed between the bottom wall 311 of the box and the outer wall surface of the first wall 133. The structure is simple and easy to assemble. The sealing gasket 360 achieves the sealing of the wire hole 134 by sealing the surface between it and the outer wall surface of the first wall 133, which strengthens the interface fit of the box 13, improves the sealing performance of the wire hole 134, and thus improves the dustproof and waterproof performance of the battery device 10.

[0160] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, a recessed portion 313 is recessed on the side of the bottom wall 311 facing the first wall 133. A wire outlet hole 314 is provided in the recessed portion 313. The first wire harness 340 passes through the recessed portion 313 and is provided in the assembly hole (assembly hole of the sealing gasket 360) through the recessed portion 313. The portion of the sealing gasket 360 surrounding the assembly hole is sealed and fitted with the outer peripheral wall of the recessed portion 313.

[0161] In other words, the recess 313 is inserted into the mounting hole of the sealing gasket 360, the first wire harness 340 passes through the recess 313, the first wire harness 340 and the recess 313 are sealed together, and the sealing gasket 360 is sealed together with the outer peripheral wall of the recess 313, so that the first wire harness 340 and the sealing gasket 360 are sealed together.

[0162] The sealing gasket 360 and the outer peripheral wall of the recess 313 form a sealing fit, which improves the sealing performance of the wire hole 134 and thus improves the dustproof and waterproof performance of the battery device 10.

[0163] According to some embodiments of this application, optionally, a sealing ring 361 is provided on the side of the sealing gasket 360 facing the first wall 133. The sealing ring 361 is arranged around the assembly hole and is fitted onto the recess 313 and seals with the recess 313.

[0164] The sealing ring 361 protrudes from the main body of the sealing gasket 360, and the sealing ring 361 and the sealing gasket 360 can be an integral structure. The sealing ring 361 and the mounting hole can be coaxially arranged.

[0165] By setting a sealing ring 361, the sealing ring 361 can seal with the recess 313, improving the sealing performance of the wire hole 134, and thus improving the dustproof and waterproof performance of the battery device 10.

[0166] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, the sealing gasket 360 is disposed on the sealing ring 361 on the side facing the first wall 133. The sealing ring 361 is disposed around the assembly hole and is disposed in the wire hole 134, and is sealed and fitted with the inner wall of the wire hole 134.

[0167] The wall of the first wall 133 can be hollowed out internally, and the sealing ring 361 can be sealed with the part of the first wall 133 near the outer wall surface.

[0168] A reinforcing sleeve 135 can be provided at the position of the wire hole 134 corresponding to the hollowed-out position of the first wall 133. The reinforcing sleeve 135 can improve the strength of the first wall 133, and the first wire harness 340 can be passed through the reinforcing sleeve 135. The setting of the reinforcing sleeve 135 can improve the smoothness of the first wire harness 340 passing through.

[0169] When a reinforcing cylinder 135 is provided inside the wire passage hole 134, the sealing ring 361 can be partially provided inside the reinforcing cylinder 135 and seal with the reinforcing cylinder 135. The reinforcing cylinder 135 seals with the inner wall of the wire passage hole 134.

[0170] The sealing ring 361 is provided in the wire hole 134, and the sealing ring 361 is sealed to the inner wall of the wire hole 134, which improves the sealing performance of the wire hole 134 and thus improves the dustproof and waterproof performance of the battery device 10.

[0171] According to some embodiments of this application, optionally, such as Figures 8 to 10 As shown, a portion of the bottom wall 311 of the box is recessed in the direction away from the first wall 133 to form a groove, and a sealing gasket 360 is disposed in the groove and seals with the groove.

[0172] In its natural state, the thickness of the sealing gasket 360 can be slightly higher than the groove. After the antenna assembly 300 is assembled with the housing 13, the sealing gasket 360 is pressed and fixed between the bottom of the groove and the outer wall of the first wall 133, and the part of the bottom wall 311 surrounding the groove can abut against the outer wall of the first wall 133.

[0173] The bottom wall 311 of the box forms a groove by being recessed. The groove can accommodate the sealing gasket 360, which reduces the size of the antenna assembly 300 protruding relative to the first wall 133 and improves the space utilization. In addition, the groove cooperates with the sealing gasket 360 to improve the sealing performance between the sealing gasket 360 and the bottom wall 311 of the box.

[0174] According to some embodiments of this application, optionally, such as Figure 9 As shown, a sealing protrusion ring 362 is provided on the side of the sealing gasket 360 facing the first wall 133. The sealing protrusion ring 362 is arranged around the assembly hole and presses against the outer wall surface of the first wall 133.

[0175] The sealing protrusion ring 362 protrudes from the surface of the body of the sealing gasket 360 (the side facing the outer wall surface of the first wall 133), and the sealing protrusion ring 362 contacts and seals with the outer wall surface of the first wall 133.

[0176] By setting a sealing protrusion ring 362, a seal is formed between the sealing gasket 360 and the outer wall surface of the first wall 133, thereby improving the sealing performance of the housing 13.

[0177] According to some embodiments of this application, optionally, such as Figure 9 As shown, multiple sealing protrusions 362 are provided, and the multiple sealing protrusions 362 are arranged at intervals along the direction intersecting the axis of the assembly hole, and adjacent sealing protrusions 362 are nested together.

[0178] Multiple sealing protrusions 362 are arranged sequentially at intervals and nested in sequence. For example, the multiple sealing protrusions 362 may be nested sequentially along a direction perpendicular to the axis of the mounting hole.

[0179] The sealing protrusion ring 362 can be configured to be two, three or more.

[0180] By setting a sealing protrusion ring 362, a multi-layer seal is formed between the sealing gasket 360 and the outer wall surface of the first wall 133. When one of the sealing protrusion rings 362 fails, the sealing gasket 360 and the outer wall surface of the first wall 133 still have a good sealing effect, which can reduce the possibility of sealing failure of the wire hole 134 and improve the sealing performance of the housing 13.

[0181] According to some embodiments of this application, optionally, the housing 310 is detachably connected to the first wall 133.

[0182] The antenna assembly 300 is detachably connected to the first wall 133 via the housing 310, which improves the ease of disassembly, maintenance and assembly of the antenna assembly 300.

[0183] According to some embodiments of this application, optionally, such as Figures 8 to 11 As shown, the box body 310 is connected to the first wall 133 by a plurality of fasteners 350.

[0184] Fastener 350 can be a bolt assembly 351, a pin or other cylindrical component, or other components, such as a snap-fit ​​type of clamping component.

[0185] Multiple fasteners 350 may be provided, and the multiple fasteners 350 are distributed around the periphery of the box body 310. For example, the box body 310 is generally square, and fasteners 350 are provided at the four corners of the box body 310.

[0186] For example, such as Figures 5 to 12As shown, the fastener 350 includes a bolt assembly 351. A first assembly hole 352 is provided on the housing 310, and a second assembly hole 353 is provided on the first wall 133. The bolt assembly 351 is inserted into the first assembly hole 352 and the second assembly hole 353 to fix the housing 310 to the first wall 133. The first assembly hole 352 can be a through hole, allowing the bolt assembly 351 to pass through the first assembly hole 352 and then be assembled into the second assembly hole 353. This allows the bolt assembly 351 to be inserted from outside the housing 13, making operation more convenient. The second assembly hole 353 can be a through hole or a blind hole. The first assembly hole 352 and the second assembly hole 353 can be respectively configured as threaded holes or smooth holes.

[0187] Optionally, a sealing gasket may be provided between the first assembly hole 352 and the second assembly hole 353. The sealing gasket can seal the first assembly hole 352 and the second assembly hole 353, reducing the possibility of dust, moisture, etc. entering the housing 13 and the box 310 through the second assembly hole 353.

[0188] For example, such as Figures 6 to 11 As shown and Figure 12 As shown, the surface of the box body 310 facing away from the bottom wall 311 (understand with reference to the top surface 312 of the cover 315 of the box body 310) is provided with a recessed area 3121 to avoid the receiving cavity, and the fastener 350 is connected to the recessed area 3121. By setting the fastener 350 in the recessed area 3121, the possibility of the fastener 350 protruding relative to the box body 310 is reduced.

[0189] The housing 310 of the antenna assembly 300 and the housing 13 of the battery device 10 are connected by fasteners 350, which makes disassembly and assembly convenient and the connection is stable.

[0190] According to some embodiments of this application, optionally, such as Figures 5 to 7 As shown, the first wiring harness 340 has a first connector 341 at one end away from the antenna 320. The first connector 341 is located inside the housing 13, and the first wiring harness 340 is electrically connected to the battery management system 200 through the first connector 341.

[0191] The battery management system 200 may be equipped with a second connector 223, and the first connector 341 is plugged into the second connector 223.

[0192] Among them, one of the first connector 341 and the second connector 223 is a male connector and the other is a female connector. The male connector and the female connector are plugged into each other to achieve the fixation and electrical connection of the first connector 341 and the second connector 223.

[0193] For example, the first connector 341 is a female connector with a groove, and the second connector 223 is a male connector. The male connector is inserted into the groove of the female connector and is interference-fitted with the female connector for fixation.

[0194] The first wiring harness 340 is connected to the battery management system 200 by plugging in the first connector 341 and the second connector 223, which facilitates the replacement or maintenance of the antenna assembly 300.

[0195] Optionally, the first wiring harness 340 can be integrated with the antenna assembly 300. That is, the first wiring harness 340 and the antenna 320 or the housing 310 are processed into a non-detachable structure. The detachable end of the first wiring harness 340 is located inside the housing 13. Without opening the housing 13, the first wiring harness 340 is not easily detached from the battery management system 200, which can reduce the possibility that the antenna assembly 300 can be disassembled separately and stolen.

[0196] According to some embodiments of this application, optionally, such as Figures 5 to 7 and combined Figure 13 As shown, Figure 13 This is a schematic diagram of the communication connection between a battery management system, an antenna assembly, and a cloud server according to some embodiments of this application. The battery management system 200 includes a battery management component 210 and a communication component 220. The battery management component 210 and the communication component 220 are communicatively connected. The communication component 220 is used to realize the data transmission of the battery management system 200. The antenna assembly 300 is electrically connected to the communication component 220 through a first wiring harness 340.

[0197] Among them, the battery management component 210 is mainly used to monitor and manage the battery cell 101.

[0198] The communication component 220 and the battery management component 210 can both be housed in the functional compartment 132 of the housing 13. For example, the communication component 220 and the battery management component 210 can be separately housed and located in different positions within the functional compartment 132. The communication component 220 and the battery management component 210 can be communicatively connected via a second wiring harness 211.

[0199] The communication component 220 may include an assembly housing and a data transmission component 221 and a data processing component 222 disposed within the assembly housing. The data transmission component 221 is communicatively connected to the battery management component 210 through the data processing component 222. The data processing component 222 is used to receive battery data from the battery management component 210 and filter the battery data. The data transmission component 221 sends the filtered battery data to the server through the antenna component 300.

[0200] Optionally, a mounting base 240 is provided inside the functional compartment 132, and the assembly shell of the communication component 220 is mounted on the mounting base 240 by means of fasteners. The mounting base 240 may be a rod structure disposed inside the functional compartment 132 and connected to the housing 13.

[0201] The communication component 220 is used to realize the data transmission of the battery management component 210. It can receive and send relevant data of the battery management component 210 to the server, and it can also receive and send instructions sent by the server to the battery management component 210.

[0202] The data processing unit 222 can communicate wiredly with the battery device 10 (battery management component 210) and the vehicle-side high-voltage box 40 via a wiring harness (referred to as the second wiring harness 211 for ease of description) to receive and filter battery data from the battery device 10 (battery management component 210), and can send the filtered data to the data transmission unit 221. The second wiring harness 211 and the data processing unit 222 can be detachably connected or non-detachably fixedly connected via a connector. The second wiring harness 211 and the battery management component 210 can be non-detachably fixedly connected or detachably connected via a connector.

[0203] The data transmission component 221 can be a wireless communication component, capable of wirelessly communicating with a server (referring to cloud server 1). It can be used to send data from the battery management component 210 to the server, or to send instructions from the server to the battery management component 210. By setting up the data transmission component 221, data and location information of the battery device 10 can be transmitted back to the server in real time, facilitating the server's asset management and positioning of the battery device 10. Combined with big data analytics, the battery device 10 can be monitored throughout its entire lifecycle, improving its service life.

[0204] Optionally, the data transmission component 221 may include a 4G communication component, a 3G (third-generation mobile communication technology) communication component, and / or a 5G communication component.

[0205] The circuits, chips, and other electrical components of the data processing unit 222 and the data transmission unit 221 can be integrated on a single circuit board or disposed on two separate circuit boards. Communication between the data processing unit 222 and the data transmission unit 221 can be achieved through circuitry. The data processing unit 222 and the data transmission unit 221 can also be housed within the same assembly housing.

[0206] Optionally, such as Figure 13 As shown, the battery management system 200 also includes a positioning component 230, which is communicatively connected to the data transmission component 221.

[0207] The positioning component 230 may be integrated into the circuit board or circuit of the data transmission component 221, or it may be integrated into the battery management component 210. The positioning component 230 may be a GNSS positioning module, which is an electronic device that integrates a Global Navigation Satellite System (GNSS) receiver and related circuitry.

[0208] The positioning information of the positioning component 230 can be sent to the server (see cloud server 1 for details) via the data transmission component 221. By setting the positioning component 230, 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.

[0209] like Figures 2 to 13As shown, this embodiment provides a battery device 10, including a housing 13, battery cells 101, a battery management system 200, and an antenna assembly 300. The housing 13 is divided into an energy storage compartment 131 and a functional compartment 132 by an expansion beam. The battery cells 101 include multiple battery cells 101 and are disposed within the energy storage compartment 131. The battery management system 200 is disposed within the functional compartment 132. The battery management system 200 includes a battery management component 210 and a communication component 220 electrically connected via a second wiring harness 211. The battery management component 210 is used to monitor and manage the battery cells 101, and the communication component 220 is used to realize data transmission of the battery management system 200. One side wall of the housing 13 is a first wall 133, which is the side wall of the housing 13 that surrounds the functional compartment 132. The antenna assembly 300 is mounted to the outer wall surface of the first wall 133 by fasteners 350. The antenna assembly 300 includes a housing 310, a first wiring harness 340, and an antenna 320 disposed within the housing 310. The antenna 320 is electrically connected to the battery management system 200 via the first wiring harness 340. The housing 310 has a bottom wall 311 facing the first wall 133. A recessed portion 313 is recessed on the side of the bottom wall 311 facing the first wall 133. The recessed portion 313 is provided with a wire outlet hole 314. A limiting member 317 is fixed inside the recessed portion 313. The bottom of the limiting member 317 is inserted into the wire outlet hole 314. The wire outlet hole 314 corresponds to and communicates with the wire through hole 134. The housing 310 covers the wire through hole 134. The wire outlet hole 314 and the wire through hole 134 are coaxially arranged. One end of the first wire harness 340 is fixedly connected to the antenna 320, and the other end of the first wire harness 340 passes through the limiting member 317 and out of the wire outlet hole 314, and then passes through the wire through hole 134 into the housing 13. The first wire harness 340 is provided with a first connector 341, and the communication component 220 is provided with a second connector 223. The first wire harness 340 is connected to the communication component 220 by plugging in the first connector 341 and the second connector 223. A portion of the bottom wall 311 of the box is recessed in the direction away from the first wall 133 to form a groove. A sealing gasket 360 is provided in the groove. The sealing gasket 360 is pressed between the bottom wall 311 of the box and the outer wall surface of the first wall 133. The sealing gasket 360 covers the sealing wire hole 134. Multiple sealing protrusions 362 are provided on the side of the sealing gasket 360 facing the first wall 133. Each sealing protrusion 362 is arranged around the assembly hole, and the multiple sealing protrusions 362 are spaced apart along the axis intersecting the assembly hole.The sealing gasket 360 has an assembly hole, and a recess 313 is located in the assembly hole. The portion of the sealing gasket 360 surrounding the assembly hole seals against the outer peripheral wall of the recess 313. The sealing gasket 360 is positioned on a sealing ring 361 facing the wire passage hole 134. The sealing ring 361 is positioned in the wire passage hole 134 and seals against the inner wall of the wire passage hole 134. The sealing ring 361 surrounds the assembly hole and is fitted onto the recess 313, sealing against it. The communication component 220 avoids the wire passage hole 134. The functional compartment 132 is positioned at one end corresponding to the first wall 133. The wire passage hole 134 is located at the middle of the length of the first wall 133. A reinforcing cylinder 135 may be provided for the wire passage hole 134. The box body 310 has a first assembly hole 352, and the first wall 133 has a second assembly hole 353. The first assembly hole 352 and the second assembly hole 353 are aligned and correspond one-to-one. A bolt assembly 351 passes through the corresponding first assembly hole 352 and the second assembly hole 353. The bolt assembly 351 locks and fixes the box body 310 to the first wall 133 through the first assembly hole 352 and the bolt assembly 351. The box body 310 can be roughly square, and the four corners of the box body 310 are respectively provided with the first assembly hole 352 and the bolt assembly 351. The communication component 220 includes a data transmission component 221, a data processing component 222, and a positioning component 230. The data transmission component 221 is communicatively connected to the battery management component 210 through the data processing component 222. The data processing component 222 is used to receive battery data and filter the battery data. The data transmission component 221 includes a wireless communication component, which includes a 3G communication component, a 4G communication component, and / or a 5G communication component. The data transmission component 221 cooperates with the antenna component 300 to realize the communication interaction between the data transmission component 221 and the server (refer to cloud server 1). The positioning component 230 is communicatively connected to the data transmission component 221, and the antenna 320 is electrically connected to the data transmission component 221.

[0210] 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.

[0211] The electrical equipment in this embodiment can be any of the above-mentioned electrical equipment or systems.

[0212] 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.

[0213] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0214] 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.

[0215] 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: The enclosure has a first wall, on which a wire-passing hole is provided; At least one battery cell is disposed within the housing; A battery management system is installed inside the housing and connected to the individual battery cells. The battery management system is used to collect battery data from at least one individual battery cell and manage the individual battery cell based on the battery data. An antenna assembly is used to enhance the signal strength of the battery management system and to send the battery data to a server. The antenna assembly is installed on the outer wall of the first wall and includes a housing, a first wiring harness, and an antenna disposed within the housing. The antenna is electrically connected to the battery management system via the first wiring harness. The housing has a bottom wall facing the first wall and has a wire outlet hole. The wire outlet hole corresponds to and communicates with the wire through hole. The first wiring harness passes through the wire outlet hole and the wire through hole.

2. The battery device according to claim 1, characterized in that, The housing covers the wire hole.

3. The battery device according to claim 1, characterized in that, The outlet hole and the through hole are coaxially arranged.

4. The battery device according to claim 1, characterized in that, A limiting member is provided between the bottom wall of the box and the first wire harness, and the limiting member is configured to restrict the movement of the first wire harness relative to the outlet hole.

5. The battery device according to claim 4, characterized in that, The limiting member is fixed to the inner wall surface of the bottom wall of the box, and the limiting member is sleeved and fixed to the first wire harness.

6. The battery device according to claim 5, characterized in that, The bottom wall of the box has a recessed portion on the side facing the first wall, the cable outlet is disposed in the recessed portion, and the limiting member is disposed in the recessed portion.

7. The battery device according to claim 1, characterized in that, The battery device also includes a seal configured to seal the wire hole.

8. The battery device according to claim 7, characterized in that, The sealing element includes a sealing gasket, which is pressed between the bottom wall of the box and the outer wall surface of the first wall, and the sealing gasket covers and seals the wire hole. The sealing gasket is provided with an assembly hole, through which the first wire harness passes.

9. The battery device according to claim 8, characterized in that, The bottom wall of the box has a recessed portion on the side facing the first wall. The cable outlet is located in the recessed portion. The first wire harness passes through the recessed portion and is located in the assembly hole through the recessed portion. The portion of the sealing gasket surrounding the assembly hole is sealed with the outer peripheral wall of the recessed portion.

10. The battery device according to claim 9, characterized in that, A sealing ring is provided on the side of the sealing gasket facing the first wall. The sealing ring is arranged around the assembly hole and is fitted onto the recessed portion, and is sealed to the recessed portion.

11. The battery device according to claim 8, characterized in that, A sealing ring is provided on the side of the sealing gasket facing the wire hole. The sealing ring is arranged around the assembly hole and is disposed in the wire hole, and is sealed and fitted with the inner wall of the wire hole.

12. The battery device according to claim 8, characterized in that, A portion of the bottom wall of the box is recessed in a direction away from the first wall to form a groove, and the sealing gasket is disposed in the groove and seals with the groove.

13. The battery device according to claim 8, characterized in that, The sealing gasket has a sealing protrusion ring on the side facing the first wall. The sealing protrusion ring surrounds the assembly hole and presses against the outer wall surface of the first wall.

14. The battery device according to claim 13, characterized in that, The sealing protrusion rings are configured in multiple ways, and the multiple sealing protrusion rings are arranged at intervals along the axis intersecting the assembly hole, and adjacent sealing protrusion rings are nested together.

15. The battery device according to any one of claims 1-14, characterized in that, The box body is detachably connected to the first wall.

16. The battery device according to claim 15, characterized in that, The box body is connected to the first wall by a plurality of fasteners.

17. The battery device according to any one of claims 1-14, characterized in that, The first wire harness has a first connector at the end opposite to the antenna. The first connector is located inside the housing, and the first wire harness is electrically connected to the battery management system through the first connector.

18. The battery device according to any one of claims 1-14, characterized in that, The battery management system includes a battery management component and a communication component. The battery management component is communicatively connected to the communication component. The communication component is used to realize data transmission of the battery management system. The antenna component is electrically connected to the communication component through the first wire harness.

19. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-18.

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