A battery device, a terminal assembly, and an electric appliance

Abstract

The application relates to the battery technical field and provides a battery device, a terminal assembly and a power utilization equipment. The battery device comprises a terminal assembly, a mounting base and a conductive wire. The terminal assembly comprises a main body and an anti-rotation piece. The main body is formed with a first plug-in part. The anti-rotation piece is formed with an anti-rotation part. The anti-rotation piece is connected with the main body. A plurality of first plug-in parts are distributed in a circumferential direction at intervals. The anti-rotation part is plug-in matched with any one of the first plug-in parts. The mounting base is formed with a second plug-in part. The main body is connected with the mounting base. The second plug-in part and the first plug-in part are both plug-in matched with the anti-rotation part. The conductive wire is connected with the main body. The second plug-in part is plug-in matched with the anti-rotation part, circumferential constraint is realized, relative rotation of the main body and the anti-rotation piece relative to the mounting base is limited, and overall anti-rotation of the terminal assembly is realized. The anti-rotation piece and the main body form an overall force structure, the overall structural rigidity of the terminal assembly is improved, and the anti-rotation reliability is improved.

Description

Technical Field

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

[0002] Battery devices can be used to store or provide electrical energy, and they can be used in electrical equipment, such as vehicles. Taking vehicles as an example, in a vehicle equipped with a battery device, the battery device can provide all or part of the power.

[0003] Battery devices have terminals that connect to conductive wires. As core components for realizing circuit conduction and signal transmission, the installation stability of terminals has a significant impact on the reliability of circuit connections. To prevent circumferential rotation of terminals during installation and use, which could lead to loose wiring, poor contact, signal distortion, or even short circuits, integrated terminals are commonly used in related technologies. These terminals use anti-rotation ribs that work in conjunction with the mounting base to achieve circumferential limiting and anti-rotation. However, integrated terminals suffer from insufficient structural rigidity, limiting the reliability of anti-rotation measures. Utility Model Content

[0004] This application provides a battery device, a terminal assembly, and an electrical device. The anti-rotation component and the main body form an integral load-bearing structure, which improves the overall structural rigidity of the terminal assembly. The anti-rotation component can be selectively inserted into the first insertion component to adapt to different installation angles.

[0005] The technical solution of this application embodiment is implemented as follows: This application provides a battery device, the battery device comprising: A terminal assembly includes a main body and an anti-rotation component. The main body has a first insertion portion, and the anti-rotation component has an anti-rotation portion. The anti-rotation component is connected to the main body. A plurality of first insertion portions are distributed circumferentially at intervals, and the anti-rotation portion is inserted into any one of the first insertion portions. The mounting base has a second insertion portion, the main body is connected to the mounting base, and the second insertion portion is inserted into the anti-rotation portion; Conductive wires are connected to the main body component.

[0006] The battery device provided in this application embodiment has both the second and first insertion parts that are inserted into and cooperate with the anti-rotation part to achieve circumferential constraint, restricting the relative rotation of the main body and the anti-rotation part relative to the mounting base, and realizing overall anti-rotation of the terminal assembly. The main body and the anti-rotation part are separate structures, with the anti-rotation part connected to the main body. The anti-rotation part and the main body form an integral force-bearing structure, which improves the overall structural rigidity of the terminal assembly and enhances the reliability of anti-rotation. This suppresses the risk of loosening, misalignment, or plastic deformation of the terminal assembly under the action of external forces such as vibration and / or temperature difference deformation stress during battery device operation, thereby improving the stability of battery device operation. Multiple first plug-in parts are distributed circumferentially. The anti-rotation part can be selectively plugged into one of the first plug-in parts. By changing the angle and position of the anti-rotation part, the anti-rotation component can be selected from multiple angles in the circumferential direction to complete the plug-in assembly, adapting to different installation conditions. This achieves circumferential anti-rotation at multiple angles and in multiple installation orientations, and further adapts to the installation requirements of second plug-in parts at different angles on the mounting base. This improves the assembly versatility and compatibility of the terminal assembly, reduces the types of accessory specifications, reduces the selection difficulty for designers, has a good error-proof effect, can reduce production and management costs, and facilitates flexible on-site assembly, thereby improving R&D and production efficiency.

[0007] In some embodiments, the main body has a first hole, the anti-rotation component has a second hole, and the mounting base has a third hole. Fasteners are inserted into the second hole, the first hole, and the third hole to connect the anti-rotation component, the main body, and the mounting base.

[0008] In this embodiment, the fasteners fix the anti-rotation component, the main body component, and the mounting base together, simplifying the assembly process, improving the overall assembly efficiency, and generating axial preload to tightly press the anti-rotation component, the main body component, and the mounting base together, thereby improving the overall structural rigidity of the terminal assembly and ensuring that the overall structure remains stable under stress, vibration, and temperature difference conditions.

[0009] In some embodiments, the anti-rotation member includes a first sheet, and the anti-rotation portion is bent toward one side of the first sheet in the thickness direction.

[0010] In this embodiment, the first piece has both lightweight and support functions. The anti-rotation part is bent and formed on one side of the thickness direction of the first piece. The anti-rotation part has a simple structure and occupies little space.

[0011] In some embodiments, the main body includes a second piece forming the first insertion portion, and the first piece and the second piece are stacked.

[0012] In this embodiment, the first piece and the second piece are arranged in a stacked manner, which results in a compact structure and small space occupation. The first piece and the second piece fit together and support each other, which improves the overall strength and resistance to deformation and enhances the anti-rotation effect.

[0013] In some embodiments, the main body includes a support portion and a crimping portion, the support portion being connected to the second sheet body, the crimping portion being connected to the support portion, and the crimping portion and the support portion jointly clamping the end of the conductive wire.

[0014] In this embodiment, the bearing part is connected to the crimping part and cooperates to clamp the end of the conductive wire, which is convenient for assembly. At the same time, the clamping connection method provides stable contact, and the overall structure is simple and compact, which is conducive to reliable signal transmission.

[0015] In some embodiments, the battery device includes: Box; At least two battery cells are disposed within the housing; The box body, the terminal assembly, the mounting base and the conductive wire are all disposed inside the box body, and the box body is disposed inside or outside the enclosure.

[0016] In this embodiment, the housing can be placed inside the enclosure, utilizing the internal space to compactly arrange the electrical structure. Alternatively, the housing can be placed outside the enclosure as needed, flexibly adapting to the installation requirements of the battery device. The terminal assembly, mounting base, and conductive wires are integrated into a separate housing. During voltage and / or temperature sampling using the terminal assembly, interference from battery cell charging and discharging temperature fluctuations on sampling accuracy is avoided. Furthermore, the high-voltage circuit is isolated from the sampling signal, improving the stability and reliability of the sampling.

[0017] In some embodiments, the battery device includes a battery management unit, and the battery device includes at least one of a high-voltage relay, a fuse, and a high-voltage connector disposed within the housing, wherein at least one of the high-voltage relay, the fuse, and the high-voltage connector is connected to the mounting base, and the conductive wire is connected to the battery management unit.

[0018] In this embodiment, at least one of the high-voltage relay, fuse, and high-voltage connector is connected to the signal path of the battery management unit through the mounting base and conductive wires. The electrical signals corresponding to voltage and / or temperature are led out from the high-voltage relay, fuse, and high-voltage connector through the conductive wires, and then processed and uploaded by the battery management unit, which can realize voltage and / or temperature sampling.

[0019] This application provides a terminal assembly, including a main body and an anti-rotation member. The main body has a first plug-in portion, and the anti-rotation member has an anti-rotation portion. The anti-rotation member is connected to the main body. A plurality of first plug-in portions are distributed circumferentially at intervals, and the anti-rotation portion is plugged into any one of the first plug-in portions.

[0020] The terminal assembly provided in this application embodiment has a separate structure for the main body and the anti-rotation component. The anti-rotation component is connected to the main body, forming an integral load-bearing structure. This improves the overall structural rigidity of the terminal assembly and enhances the reliability of anti-rotation, thereby suppressing the risk of loosening, misalignment, or plastic deformation of the terminal assembly under external forces such as vibration and / or temperature-induced deformation stress during battery device operation. This, in turn, improves the stability of battery device operation. The anti-rotation component can be selectively inserted into the first insertion part, changing the angle and position of the anti-rotation component to achieve circumferential anti-rotation at multiple angles and installation orientations. This adapts to the installation requirements of the second insertion part at different angles on the mounting base, improving the assembly versatility and compatibility of the terminal assembly, reducing the types of accessory specifications, reducing the difficulty of selection for designers, providing good error prevention, reducing production and management costs, and facilitating flexible on-site assembly, thereby improving R&D and production efficiency.

[0021] In some embodiments, the main body has a first hole, the anti-rotation member has a second hole, and fasteners are inserted into the second hole and the first hole to connect the anti-rotation member and the main body.

[0022] This application provides an electrical device including any of the battery devices described above.

[0023] The electrical equipment provided in the embodiments of this application includes the battery device in any embodiment of this application, and has the same or corresponding beneficial effects as the battery device. Attached Figure Description

[0024] Figure 1 These are schematic diagrams of the vehicle structure provided in some embodiments of this application; Figure 2 This is a schematic diagram of a partial structure of a battery device provided in some embodiments of this application; Figure 3 These are schematic diagrams of the terminal assembly, mounting base, conductive wire, and housing provided in some embodiments of this application; Figure 4 yes Figure 3 A schematic diagram of the middle section structure; Figure 5 This is a schematic diagram of the terminal assembly and mounting base provided in some embodiments of this application; Figure 6 yes Figure 5 A schematic diagram of the structure shown from another perspective; Figure 7 This is a schematic diagram of the structure of a terminal assembly provided in some embodiments of this application; Figure 8 These are schematic diagrams of the main components provided in some embodiments of this application; Figure 9This is a schematic diagram of the anti-rotation component provided in some embodiments of this application.

[0025] Explanation of reference numerals in the attached figures 1000, Vehicle; 100, Battery assembly; 200, Control device; 300, Motor; 1, Terminal assembly; 11, Main body; 111, First insertion part; 112, First hole; 113, Second piece; 114, Bearing part; 115, Crimping part; 12, Anti-rotation part; 121, Anti-rotation part; 122, Second hole; 123, First piece; 2, Mounting base; 21, Second insertion part; 3, Conductive wire; 4, Housing; 41, First housing body; 42, Second housing body; 5, Battery cell; 6, Box; 10, Fastener. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, embodiments of the technical solutions of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of this application more clearly, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0027] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0028] In the description of the embodiments of this application, the technical terms "first", "second", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0029] In this document, the term "embodiment" means that a specific 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 in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that combinations can be made in any suitable manner without contradiction; for example, different combinations of specific technical features / embodiments can form different implementations. To avoid unnecessary repetition, the various possible combinations of specific technical features / embodiments in this application will not be described separately.

[0030] It should be noted that in this application, "multiple" refers to two or more items. "At least two" refers to two or more items. "Multiple types" refers to two or more items. "Multi-layered" refers to two or more layers.

[0031] Please see Figures 1 to 2 To facilitate understanding of the battery device 100 and electrical equipment provided in the embodiments of this application, some basic structures of the battery cell 5, battery device 100 and electrical equipment provided in the embodiments of this application will be introduced first.

[0032] In this embodiment of the application, the battery cell 5 can be a secondary battery, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0033] The battery cell 5 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.

[0034] A single battery cell 5 typically includes an electrode assembly, which comprises a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the single battery cell 5, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, serves to prevent short circuits between the electrodes while allowing active ions to pass through.

[0035] In some embodiments, the positive electrode can be a positive electrode sheet, which may include a positive current collector and a positive active material disposed on at least one surface of the positive current collector.

[0036] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0037] As an example, 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. Composite current collectors may include a polymer material base layer and a metal layer. Composite current collectors 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.).

[0038] 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. However, this application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate include, but are not limited to, at least one of lithium iron phosphate, lithium iron phosphate and carbon composites, lithium manganese phosphate, lithium manganese phosphate and carbon composites, lithium manganese iron phosphate, and lithium manganese iron phosphate and carbon composites.

[0039] In some embodiments, the negative electrode can be a negative electrode sheet, which may include a negative current collector.

[0040] As an example, the negative 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. Composite current collectors may include a polymer material base layer and a metal layer. Composite current collectors can be formed by forming a metal material (copper, copper 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.).

[0041] As an example, the negative electrode sheet may include a negative current collector and a negative active material disposed on at least one surface of the negative current collector.

[0042] As an example, the negative current collector has two surfaces opposite each other in its own thickness direction, and the negative active material is disposed on either or both of the two opposite surfaces of the negative current collector.

[0043] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cell 5. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials for battery cell 5 may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0044] In some embodiments, the positive current collector can be made of aluminum, and the negative current collector can be made of copper.

[0045] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0046] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a single component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be applied to the surface of the separator.

[0047] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0048] In some embodiments, the battery cell 5 also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte; it can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0049] Liquid electrolytes include electrolyte salts and solvents.

[0050] In some embodiments, the electrolyte salt may be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalate borate, lithium dioxalate borate, lithium difluorodioxalate phosphate, and lithium tetrafluorooxalate phosphate.

[0051] In some embodiments, the solvent may be selected from at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butyl carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, sulfolane, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent may also be an ether solvent. Ether solvents may include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyl tetrahydrofuran, diphenyl ether, and crown ethers.

[0052] In some embodiments, the electrolyte may optionally include additives. For example, additives may include negative electrode film-forming additives, positive electrode film-forming additives, and additives that can improve certain performance of the battery cell 5, such as additives that improve the overcharge / fast charge performance of the battery cell 5, additives that improve the high-temperature performance of the battery cell 5, and additives that improve the low-temperature performance of the battery cell 5.

[0053] The gel electrolyte includes a polymer as a backbone network and can be used in conjunction with an ionic liquid-lithium salt.

[0054] Solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0055] As an example, the polymers of polymeric solid electrolytes may include polyethers (polyoxyethylene), polysiloxanes, polycarbonates, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, monoionic polymers, polyionic liquids, cellulose, etc.

[0056] As an example, inorganic solid electrolytes can be one or more of the following: oxide solid electrolytes (crystalline perovskite, sodium superconducting ion conductor, garnet), sulfide solid electrolytes (crystalline lithium superconducting ion conductor (lithium germanium phosphate sulfur, sulfosilicon germanium ore), amorphous sulfides), halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0057] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0058] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0059] In some embodiments, the electrode assembly has a stacked structure.

[0060] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0061] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0062] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0063] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0064] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0065] In some embodiments, the electrode assembly may be cylindrical, flat, or polygonal, etc.

[0066] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0067] In some embodiments, the battery cell 5 may include a casing. The casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the casing may be a sealed structure or a non-sealed structure. As an example, when the casing is a non-sealed structure, the casing serves to protect the electrode assembly, and a sealing bag is included between the casing and the electrode assembly. The sealing bag is used to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating structure or an aluminum-plastic film. When the casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0068] As an example, the battery cell 5 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 battery cells. Multi-prismatic battery cells are, for example, hexagonal prismatic battery cells. This application does not have any particular limitations.

[0069] In some embodiments, the housing includes an end cap and a housing, the housing having an opening, and the end cap covering the opening. The housing may have one or more openings. The end cap may also have one or more.

[0070] In some embodiments, at least one terminal post is provided on the housing, and the terminal post is electrically connected to the tab. The terminal post can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The terminal post can be provided on the end cap or on the housing.

[0071] In some embodiments, a pressure relief mechanism is provided on the housing. The pressure relief mechanism is used to release the internal gas of the battery cell 5.

[0072] As an example, the internal pressure or temperature of the battery cell 5 is actuated to release the internal pressure or temperature when it reaches a predetermined preset value. When the internal pressure or temperature of the battery cell 5 reaches the predetermined preset value, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is destroyed, thereby forming an opening or medium flow channel for the release of internal pressure or temperature. The preset value is designed differently depending on the design requirements. The preset value may depend on one or more of the materials of the positive electrode, negative electrode, electrolyte, and separator in the battery cell 5.

[0073] As an example, the pressure relief mechanism can be integrally molded with the housing.

[0074] As an example, the pressure relief mechanism can also be separately installed and connected to the housing.

[0075] The term "actuation" as used in this application refers to the pressure relief mechanism being activated or undergoing a certain state, thereby releasing the internal pressure and temperature of the battery cell 5. The actions of the pressure relief mechanism may include, but are not limited to: movement of components within the pressure relief mechanism to form a venting medium flow channel, rupture, breakage, tearing, or opening of at least a portion of the pressure relief mechanism, etc. When the pressure relief mechanism is actuated, the high-temperature, high-pressure substances inside the battery cell 5 are discharged outwards from the actuated portion as exhaust materials. This method enables the battery cell 5 to release pressure and temperature under controllable conditions, thereby preventing potentially more serious accidents.

[0076] In some embodiments, when the outer casing is a non-sealed structure, the pressure relief mechanism can be configured as a through hole to discharge gas inside the battery cell 5.

[0077] The emissions from battery cell 5 mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0078] The battery device 100 provided in this application includes the battery cell 5 in any one embodiment of this application.

[0079] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells 5.

[0080] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 5.

[0081] As an example, a battery cell assembly can be a battery module, which consists of multiple battery cells 5 arranged and fixed together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells 5 together with cable ties.

[0082] In some embodiments, the battery device 100 may be a battery pack.

[0083] This application provides an electrical device, which includes a battery device 100 as described in any embodiment of this application. The battery device 100 is used to store or provide electrical energy.

[0084] Electrical equipment includes, but is not limited to, energy storage devices, mobile phones, tablets, laptops, electric toys, power tools, vehicles, ships, robots, or spacecraft. Vehicles can include electric bicycles and electric cars; electric toys can include electric bicycle toys and electric car toys, etc., including stationary or mobile electric toys such as game consoles, electric car toys, electric boat toys, and electric airplane toys; and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0085] Energy storage devices include, but are not limited to, energy storage containers or energy storage cabinets.

[0086] In the following embodiments, for ease of explanation, a vehicle 1000 is used as an example of an electrical device according to an embodiment of this application. The description is as follows, with reference to the accompanying drawings.

[0087] Figure 1 The diagram illustrates the structure of a vehicle 1000 as provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Figure 1 As shown, a battery device 100 is installed inside the vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a control device 200 and a motor 300. The control device 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0088] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0089] In related technologies, integrated terminal blocks are usually injection molded or die-cast in one piece. Due to limitations in overall volume, molding process, and material mechanical properties, the terminal blocks have a thin-walled structure with low structural rigidity and torsional strength. The terminal blocks are detachably connected to the mounting base. Under the action of external forces such as vibration, temperature difference deformation stress, etc. during the operation of battery devices and other equipment, the anti-rotation ribs of the terminal blocks are prone to bending, breakage, wear and deformation. Once the anti-rotation ribs fail, the terminal blocks immediately lose their circumferential limiting ability and are prone to free rotation under torsional force, which in turn leads to a series of faults such as loosening of the terminal blocks, increased contact resistance, and unstable signal transmission. This affects the stability and safety of the operation of battery devices and other equipment, and makes it difficult to meet the reliable use requirements under long-term, high-vibration, high and low temperature alternating conditions. Integrated terminal blocks have fixed-angle, fixed-position anti-rotation ribs, which can only achieve circumferential anti-rotation at specific angles and installation orientations. This makes it difficult to adapt to the diverse anti-rotation needs of different wiring orientations. For example, in practical applications, mounting bases have anti-rotation limiting grooves with various angles. In some cases, the mounting holes that mate with the terminal blocks and the angles and spatial layouts of the anti-rotation limiting grooves that mate with the anti-rotation ribs differ on different types of mounting bases. Terminal blocks with single-angle anti-rotation are difficult to achieve cross-device and cross-scenario universality. Terminal blocks with corresponding angles and structures must be designed separately for different application scenarios, which greatly limits the universality and interchangeability of terminal blocks and increases the limitations of product design and application. In some cases, due to the non-universality and single-angle limitations of integrated terminal blocks, it is necessary to design and register independent specifications and part numbers of terminal blocks for various installation scenarios and models. This leads to a geometric increase in the number of terminal block part numbers, increasing mold development costs and material management difficulties. The complex part number system greatly increases the difficulty for designers in selecting parts. During product development and modification, it is easy to make mistakes in selection and mix parts numbers. This not only prolongs the product development cycle, but also leads to errors in material feeding, increased scrap rate of parts, and a significant reduction in production and assembly efficiency.

[0090] In view of this, embodiments of this application provide a battery device, including a terminal assembly, a mounting base, and a conductive wire. The terminal assembly includes a main body and an anti-rotation member. The main body has a first insertion portion, and the anti-rotation member has an anti-rotation portion. The anti-rotation member is connected to the main body. A plurality of first insertion portions are distributed circumferentially at intervals, and the anti-rotation portion is inserted into any one of the first insertion portions. The mounting base has a second insertion portion, and the main body is connected to the mounting base. The second insertion portion is inserted into the anti-rotation portion. The conductive wire is connected to the main body.

[0091] The battery device provided in this application embodiment has both the second and first insertion parts that are inserted into and cooperate with the anti-rotation part to achieve circumferential constraint, restricting the relative rotation of the main body and the anti-rotation part relative to the mounting base, and realizing overall anti-rotation of the terminal assembly. The main body and the anti-rotation part are separate structures, with the anti-rotation part connected to the main body. The anti-rotation part and the main body form an integral force-bearing structure, which improves the overall structural rigidity of the terminal assembly and enhances the reliability of anti-rotation. This suppresses the risk of loosening, misalignment, or plastic deformation of the terminal assembly under the action of external forces such as vibration and / or temperature difference deformation stress during battery device operation, thereby improving the stability of battery device operation. Multiple first plug-in parts are distributed circumferentially. The anti-rotation part can be selectively plugged into one of the first plug-in parts. By changing the angle and position of the anti-rotation part, the anti-rotation component can be selected from multiple angles in the circumferential direction to complete the plug-in assembly, adapting to different installation conditions. This achieves circumferential anti-rotation at multiple angles and in multiple installation orientations, and further adapts to the installation requirements of second plug-in parts at different angles on the mounting base. This improves the assembly versatility and compatibility of the terminal assembly, reduces the types of accessory specifications, reduces the selection difficulty for designers, has a good error-proof effect, can reduce production and management costs, and facilitates flexible on-site assembly, thereby improving R&D and production efficiency.

[0092] The battery device 100 provided in the embodiments of this application is further described below with reference to the accompanying drawings. Please refer to the accompanying drawings. Figures 2 to 9 This application provides a battery device 100, which includes a terminal assembly 1, a mounting base 2, and conductive wires 3.

[0093] Please see Figures 4 to 8 The terminal assembly 1 provided in this application embodiment includes a main body 11 and an anti-rotation member 12. The main body 11 has a first insertion portion 111, and the anti-rotation member 12 has an anti-rotation portion 121. The anti-rotation member 12 is connected to the main body 11. A plurality of first insertion portions 111 are distributed circumferentially at intervals, and the anti-rotation portion 121 is inserted and engaged with any one of the first insertion portions 111.

[0094] Please see Figures 4 to 6 The mounting base 2 has a second insertion part 21, the main body 11 is connected to the mounting base 2, and the second insertion part 21 is inserted into the anti-rotation part 121.

[0095] Please see Figure 4 Conductive wire 3 is connected to the main body component 11.

[0096] In some embodiments, terminal assembly 1 can also be used in devices other than battery device 100, for example, in vehicles or other devices involving circuit conduction. For ease of description, this application will describe terminal assembly 1 as an example of its use in battery device 100.

[0097] In some embodiments, terminal assembly 1 can be used to acquire signals, such as voltage, current, or temperature signals. In some embodiments, terminal assembly 1 can be used for grounding. This application does not limit the function of terminal assembly 1.

[0098] Mounting base 2 is conductive to enable circuit conduction.

[0099] The main body 11 and the anti-rotation component 12 are separate structures, meaning that the main body 11 and the anti-rotation component 12 are manufactured separately and then assembled together.

[0100] The main body 11 is electrically connected to the conductive wire 3, and the main body 11 is electrically connected to the mounting base 2, which can form a conductive path. For example, the electrical connection between the main body 11 and the conductive wire 3, and the electrical connection between the main body 11 and the mounting base 2, can form a sampling path for sampling parameters such as voltage, current, and / or temperature.

[0101] In some embodiments, the conductive line 3 can transmit signals such as voltage and / or temperature to the battery management system.

[0102] The battery management system is the core control unit of the battery device 100. It can monitor parameters such as voltage, current and temperature of the battery device 100 in real time, and can also be used to estimate the remaining power and control the charging and discharging logic.

[0103] An electrical connection refers to the electrical connection between components through conduction, forming a connection that can transmit electrical energy and / or signals.

[0104] Both the second insertion part 21 and the first insertion part 111 are inserted into the anti-rotation part 121. The second insertion part 21 is inserted into the anti-rotation part 121, and the first insertion part 111 is inserted into the anti-rotation part 121, which restricts the relative rotation of the main body 11, the anti-rotation part 12, and the mounting base 2, and at the same time completes the positioning between the three.

[0105] The terminal assembly 1 is circumferentially limited and prevented from rotating relative to the mounting base 2, that is, the terminal assembly 1 is prevented from rotating freely under torque, thereby improving the installation stability of the terminal assembly 1 and solving problems such as increased contact resistance and unstable signal transmission caused by the rotation of the terminal assembly 1 relative to the mounting base 2.

[0106] Please see Figure 4 In some embodiments, the mounting base 2 has a plurality of second plug-in portions 21, and the anti-rotation portion 121, the first plug-in portion 111 and the second plug-in portion 21 are arranged in a one-to-one correspondence. Figure 4The mounting base 2 has multiple second insertion parts 21 at different angles. Since the anti-rotation part 121 of this application can be inserted and cooperated with any of the first insertion parts 111 of the main body 11, the angle and position of the anti-rotation part 121 can be changed, thereby achieving circumferential anti-rotation at multiple angles and multiple installation positions. The installation requirements of the second insertion parts 21 at different angles on the mounting base 2 can be adapted by the combination of an anti-rotation part 12 and a main body 11.

[0107] In some embodiments, there can be multiple mounting bases 2, with at least two mounting bases 2 having different positions for their second insertion portions 21. The anti-rotation portion 121, the first insertion portion 111, and the second insertion portion 21 are arranged in a one-to-one correspondence. The anti-rotation portion 121 engages with any one of the first insertion portions 111 of the main body 11. Therefore, the angle and position of the anti-rotation portion 121 can be changed, thereby achieving circumferential anti-rotation from multiple angles and mounting orientations. The circumferential direction here refers to the direction of terminal assembly 1 around its own central axis.

[0108] The battery device 100 provided in this application embodiment has its second insertion part 21 and first insertion part 111 both inserted into and engaged with the anti-rotation part 121 to achieve circumferential constraint, restricting the relative rotation of the main body 11 and the anti-rotation part 12 relative to the mounting base 2, thereby achieving overall anti-rotation of the terminal assembly 1. The main body 11 and the anti-rotation part 12 are separate structures, with the anti-rotation part 12 connected to the main body 11. The anti-rotation part 12 and the main body 11 form an integral force-bearing structure, improving the overall structural rigidity of the terminal assembly 1 and enhancing the reliability of anti-rotation. This suppresses the risk of loosening, misalignment, or plastic deformation of the terminal assembly 1 under the action of external forces such as vibration and / or temperature difference deformation stress during the operation of the battery device 100, thereby improving the operational stability of the battery device 100. Multiple first plug-in portions 111 are distributed circumferentially. The anti-rotation portion 121 can be selectively plugged into one of the first plug-in portions 111. By changing the angle and position of the anti-rotation portion 121, the anti-rotation component 12 can be selected from multiple angles in the circumferential direction to complete the plug-in assembly, adapting to different installation conditions, thereby achieving circumferential anti-rotation at multiple angles and installation orientations. This also adapts to the installation requirements of the second plug-in portions 21 at different angles on the mounting base 2, improving the assembly versatility and adaptability of the terminal assembly 1, reducing the types of accessory specifications, reducing the selection difficulty for designers, providing good error prevention, reducing production and management costs, and facilitating flexible on-site assembly, thereby improving R&D and production efficiency.

[0109] In some embodiments, the plurality of first plug-in portions 111 may also be distributed in a two-dimensional matrix or concentric circles.

[0110] In some embodiments, the anti-rotation component 12 is detachably connected to the main body component 11.

[0111] In this embodiment, the anti-rotation component 12 and the main body component 11 are detachably connected, which not only facilitates the assembly of the terminal assembly 1, but also allows the anti-rotation component 12 to be disassembled and replaced separately when it malfunctions, without the need for overall scrapping, thus reducing maintenance difficulty and operating costs.

[0112] Unless otherwise stated, in the embodiments of this application, non-detachable connections include, but are not limited to, at least one of welding, bonding, and riveting. Detachable connections include, but are not limited to, at least one of screw connections, bolt connections, and snap-fit ​​connections.

[0113] In some embodiments, please refer to Figures 5 to 9 The main body 11 has a first hole 112, the anti-rotation component 12 has a second hole 122, the mounting base 2 has a third hole, and the fastener 10 passes through the second hole 122, the first hole 112 and the third hole to connect the anti-rotation component 12, the main body 11 and the mounting base 2.

[0114] In some embodiments, please refer to Figure 8 Multiple first plug-in portions 111 are distributed at intervals around the first hole 112.

[0115] Fastener 10 is inserted into the second hole 122 and the first hole 112 to connect the anti-rotation component 12 and the main body component 11. Fastener 10 is also inserted into the third hole to connect the main body component 11 and the mounting base 2.

[0116] In some embodiments, the fastener 10 may be of types including, but not limited to, screws or bolts. This allows for a detachable connection between the anti-rotation component 12, the main body 11, and the mounting base 2.

[0117] For example, bolts are inserted into the second hole 122, the first hole 112, and the third hole, and nuts are threadedly engaged with the bolts, thereby locking the anti-rotation component 12, the main body 11, and the mounting base 2. After the bolts are tightened, an axial preload is generated, which tightly presses the anti-rotation component 12, the main body 11, and the mounting base 2 together, improving the overall structural rigidity of the terminal assembly 1 and ensuring that the overall structure remains stable under stress, vibration, and temperature difference conditions.

[0118] In this embodiment, the fastener 10 fixes the anti-rotation component 12, the main body component 11 and the mounting base 2 together, which simplifies the assembly process, improves the overall assembly efficiency, and can also generate axial preload force to tightly press the anti-rotation component 12, the main body component 11 and the mounting base 2, improve the overall structural rigidity of the terminal assembly 1, and allow the overall structure to maintain shape stability under stress, vibration and temperature difference environments.

[0119] In some embodiments, the anti-rotation component 12 is an integral structure.

[0120] The anti-rotation component 12 is a one-piece structure. That is, the anti-rotation component 12 is an inseparable whole.

[0121] In some embodiments, the anti-rotation component 12 is a one-piece structure. That is, the anti-rotation component 12 is a one-piece structure manufactured using a one-piece molding process.

[0122] For example, the anti-rotation component 12 can be an integral injection molded structure; or, the anti-rotation component 12 can be an integral die-casting structure.

[0123] In this embodiment, the anti-rotation component 12 is an integral structure with no splicing gaps or connection points. It has strong overall structure, higher rigidity, stable and reliable anti-rotation limiting performance, and reduces assembly steps.

[0124] The anti-rotation component 12 is conductive, and in some embodiments, it is a metallic structure. That is, the anti-rotation component 12 is made of a metallic material. The anti-rotation component 12 is a rigid structure capable of maintaining its shape.

[0125] For example, the anti-rotation component 12 is made of copper, aluminum, or an alloy, etc.

[0126] In some embodiments, the main body 11 is a one-piece structure.

[0127] The main body 11 is a one-piece structure. That is, the main body 11 is an indivisible whole.

[0128] In some embodiments, the main body 11 is a one-piece structure. That is, the main body 11 is a one-piece structure manufactured using a one-piece molding process.

[0129] For example, the main body 11 can be an integral injection molded structure; or, the main body 11 can be an integral die casting structure.

[0130] In this embodiment, the main body 11 is an integral structure with no splicing gaps or connection points. It has strong overall structure, higher rigidity, stable and reliable anti-rotation limiting performance, and reduces assembly steps.

[0131] The main body 11 is conductive, and in some embodiments, the main body 11 is a metallic structure. That is, the main body 11 is made of a metallic material. The main body 11 is a rigid structure capable of maintaining its shape.

[0132] For example, the main body 11 is made of copper, aluminum, or an alloy, etc.

[0133] The mounting base 2 is conductive, and in some embodiments, the mounting base 2 is a metallic structure. That is, the mounting base 2 is made of a metallic material. For example, the mounting base 2 is made of copper, aluminum, or an alloy, etc.

[0134] The shape of the mounting base 2 is not limited; in some embodiments, the mounting base 2 is a sheet-like structure.

[0135] In some embodiments, please refer to Figure 9 The anti-rotation component 12 includes a first piece 123, and the anti-rotation part 121 is bent toward one side of the thickness direction of the first piece 123.

[0136] The first piece 123 has a sheet-like structure.

[0137] A sheet-like structure refers to a flat structure with a relatively small thickness but a relatively large surface area perpendicular to the thickness direction.

[0138] In this embodiment, the first piece 123 has both lightweight and support functions. The anti-rotation part 121 is bent into shape on one side of the thickness direction of the first piece 123. The anti-rotation part 12 has a simple structure and occupies little space.

[0139] In some embodiments, please refer to Figure 7 and Figure 8 The main body 11 includes a second piece 113, which forms a first insertion part 111. The first piece 123 and the second piece 113 are stacked together.

[0140] The second piece 113 has a sheet-like structure.

[0141] In this embodiment, the first piece 123 and the second piece 113 are arranged in a stacked manner, which results in a compact structure and a small space occupation. The first piece 123 and the second piece 113 fit together and support each other, which improves the overall strength and resistance to deformation and enhances the anti-rotation effect.

[0142] In some embodiments, please refer to Figures 4 to 6 The main body 11 includes a support portion 114 and a crimping portion 115. The support portion 114 is connected to the second piece 113, and the crimping portion 115 is connected to the support portion 114. The crimping portion 115 and the support portion 114 together clamp the end of the conductive wire 3.

[0143] The crimping part 115 can be one or more.

[0144] The end of the conductive wire 3 can be placed on the bearing part 114, and the crimping part 115 is bent and pressed to the conductive wire 3 to complete the assembly of the conductive wire 3.

[0145] In this embodiment, the bearing part 114 is connected to the crimping part 115 and cooperates to clamp the end of the conductive wire 3, which is convenient for assembly. At the same time, the clamping connection method provides stable contact, and the overall structure is simple and compact, which is conducive to reliable signal transmission.

[0146] In some embodiments, please refer to Figure 8The first insertion part 111 penetrates the two opposite surfaces of the main body 11, and the anti-rotation part 121 is inserted into the first insertion part 111. Here, the first insertion part 111 can be a through hole, the anti-rotation part 121 is inserted into the first insertion part 111, and the wall surface of the first insertion part 111 restricts the rotation of the anti-rotation part 121.

[0147] In some embodiments, please refer to Figure 8 The first insertion portion 111 penetrates the two opposing surfaces of the second piece 113. The first insertion portion 111 is a through hole formed on the second piece 113.

[0148] In some embodiments, a portion of the surface of the main body 11 is recessed to form a first insertion portion 111. Here, the first insertion portion 111 may also be a groove.

[0149] In some embodiments, a portion of the surface of the second sheet 113 is recessed to form a first insertion portion 111. The first insertion portion 111 is a groove formed on the second sheet 113.

[0150] In some embodiments, please refer to Figure 5 and Figure 6 The second insertion part 21 penetrates the two opposing surfaces of the mounting base 2, and the anti-rotation part 121 is inserted into the second insertion part 21. Here, the second insertion part 21 can be a through hole, and the anti-rotation part 121 is inserted into the second insertion part 21, and the wall surface of the second insertion part 21 restricts the rotation of the anti-rotation part 121.

[0151] In some embodiments, a portion of the surface of the mounting base 2 is recessed to form a second insertion portion 21. Here, the second insertion portion 21 may also be a groove.

[0152] In some embodiments, please refer to Figure 2 and Figure 3 The battery device 100 includes a housing 4, a box 6, and at least two battery cells 5, with the at least two battery cells 5 disposed inside the housing 4; the terminal assembly 1, the mounting base 2, and the conductive wire 3 are all disposed inside the box 6, which is disposed inside or outside the housing 4.

[0153] The housing 4 contains the battery cells 5, providing protection for them and preventing foreign objects outside the housing 4 from affecting the charging or discharging of the battery cells 5 to a certain extent.

[0154] The housing 6 contains the terminal assembly 1, the mounting base 2, and the conductive wire 3, providing protection for the terminal assembly 1, the mounting base 2, and the conductive wire 3.

[0155] In this embodiment, the housing 6 can be placed inside the enclosure 4, utilizing the internal space of the enclosure 4 to compactly arrange the electrical structure. Alternatively, the housing 6 can be placed outside the enclosure 4 as needed, flexibly adapting to the installation requirements of the battery device 100. The terminal assembly 1, mounting base 2, and conductive wire 3 are integrated into the independent housing 6. During the sampling process of voltage and / or temperature by the terminal assembly 1, the interference of battery cell charging and discharging temperature fluctuations on the sampling accuracy is avoided, and the high-voltage circuit is isolated from the sampling signal, improving the stability and reliability of the sampling.

[0156] In some embodiments, the battery device 100 includes a battery management unit. The battery device 100 includes at least one of a high-voltage relay, a fuse, and a high-voltage connector disposed within a housing 6. At least one of the high-voltage relay, fuse, and high-voltage connector is connected to the mounting base 2, and the conductive wire 3 is connected to the battery management unit.

[0157] The Battery Management Unit (BMU) is the core building block of the Battery Management System (BMS), responsible for the basic management and monitoring of individual battery cells. The BMU collects key parameters such as voltage and temperature, performs preliminary data processing, and then uploads the data to the higher-level control unit.

[0158] The location of the battery management unit is not limited; for example, the battery management unit can be located inside or outside the housing 4.

[0159] High-voltage relays are switching devices used to connect and disconnect high-voltage, high-current circuits. There are no limited types of high-voltage relays; for example, they can be classified according to function into different types such as high-voltage main positive / main negative relays, pre-charge relays, and fast-charge relays.

[0160] A fuse is a current protection device connected in series in a circuit. When the current in the circuit exceeds the specified value, the fuse will melt the fusible element by the heat generated by itself, automatically disconnecting the circuit, thereby protecting other components in the circuit from damage by overload or short-circuit current.

[0161] High-voltage connectors are connection devices used to realize electrical connections and signal transmission between high-voltage circuit modules and different components. They are components that ensure the continuity of high-voltage circuits.

[0162] In some embodiments, the battery device 100 includes one of a high-voltage relay, a fuse, and a high-voltage connector, one of which is disposed within the housing 6.

[0163] In some embodiments, the battery device 100 includes two or three of a high-voltage relay, a fuse, and a high-voltage connector, with multiple of the high-voltage relay, fuse, and high-voltage connector disposed within the housing 6.

[0164] In this embodiment, at least one of the high-voltage relay, fuse, and high-voltage connector is connected to the battery management unit via the mounting base 2 and the conductive line 3. The electrical signals corresponding to voltage and / or temperature are led out from the high-voltage relay, fuse, and high-voltage connector via the conductive line 3, and then processed and uploaded by the battery management unit, thereby realizing voltage and / or temperature sampling.

[0165] The connection method between the box body 6 and the housing 4 is not limited. For example, the box body 6 can be detachably connected to the housing 4 or not detachably connected.

[0166] In some embodiments, please refer to Figure 2 The housing 4 includes a first housing body 41 and a second housing body 42. The first housing body 41 and the second housing body 42 are spliced ​​together to jointly define the receiving cavity, and at least two battery cells 5 are disposed in the receiving cavity.

[0167] As an example, at least two battery cells 5 can be battery modules, and at least two battery cells 5 can be housed in the housing 4 by fixing the battery modules into the housing 4. Alternatively, multiple battery cells 5 can be housed in the housing 4 by directly fixing them into the housing 4.

[0168] In some embodiments, the housing 4 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 4 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 4 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0169] The shape of the box 4 is not limited. For example, the box 4 can be a simple solid structure such as a single hexahedron, cylinder, or sphere, or it can be a complex solid structure composed of simple solid structures such as hexahedrons, cylinders, or spheres. In one example, the box 4 can be a cuboid shape, with both its length and width directions parallel to the horizontal plane, and its length direction parallel to the longest side of the cuboid.

[0170] The material of the enclosure 4 is not limited. For example, the material of the enclosure 4 can be metal materials such as aluminum alloy or iron alloy, polymer materials such as polycarbonate or polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0171] In some embodiments, multiple battery cells 5 can be connected in series, parallel, or in a mixed configuration via a busbar component.

[0172] For example, "hybrid connection" refers to at least two battery cells 5 being connected in both series and parallel. Multiple battery cells 5 can be directly connected in series, parallel, or hybrid connections; of course, at least two battery cells 5 can first be connected in series, parallel, or hybrid connections to form a module, and then the module can be connected in series, parallel, or hybrid connections to form a whole.

[0173] Taking the example of a busbar connecting two battery cells 5, in some embodiments, the busbar can electrically connect the positive terminal of one battery cell 5 and the negative terminal of the other battery cell 5, thus connecting the two battery cells 5 in series. In other embodiments, the busbar can electrically connect the positive terminal of one battery cell 5 and the positive terminal of the other battery cell 5, thus connecting the two battery cells 5 in parallel. In still other embodiments, the busbar can electrically connect the negative terminal of one battery cell 5 and the negative terminal of the other battery cell 5, thus connecting the two battery cells 5 in parallel.

[0174] The following describes the battery device 100 provided in this application embodiment further with a specific example. Please refer to [link to specific example]. Figures 2 to 9 This application provides a battery device 100, which includes a terminal assembly 1, a mounting base 2, and a conductive wire 3. The terminal assembly 1 includes a main body 11 and an anti-rotation member 12. The main body 11 has a first hole 112 and a plurality of first insertion portions 111, which surround the outer periphery of the first hole 112. The anti-rotation member 12 has a second hole 122 and an anti-rotation portion 121. The mounting base 2 has a second insertion portion 21 and a third hole, and both the second insertion portion 21 and the first insertion portion 111 are inserted into the anti-rotation portion 121. The conductive wire 3 is connected to the main body 11. The anti-rotation portion 121 is inserted into any one of the first insertion portions 111. Fasteners 10 are inserted into the second hole 122, the first hole 112, and the third hole to connect the anti-rotation member 12, the main body 11, and the mounting base 2. The fasteners 10 are bolts or screws.

[0175] In this embodiment, both the second insertion part 21 and the first insertion part 111 are inserted into the anti-rotation part 121 to achieve circumferential constraint, restricting the relative rotation of the main body 11 and the anti-rotation part 12 relative to the mounting base 2, thereby achieving overall anti-rotation of the terminal assembly 1. The main body 11 and the anti-rotation part 12 are separate structures. The fastener 10 fixes the anti-rotation part 12, the main body 11 and the mounting base 2 together, simplifying the assembly process, improving the overall assembly efficiency, and generating axial preload to tightly press the anti-rotation part 12, the main body 11 and the mounting base 2. The anti-rotation part 12 and the main body 11 form an integral force-bearing structure, improving the overall structural rigidity of the terminal assembly 1 and the reliability of anti-rotation, thereby suppressing the risk of loosening, misalignment or plastic deformation of the terminal assembly 1 under the action of external forces such as vibration and / or temperature difference deformation stress during the operation of the battery device 100, and thus improving the stability of the operation of the battery device 100. The anti-rotation part 121 can be selectively plugged into the first plug-in part 111 to change the angle and position of the anti-rotation part 121, thereby achieving circumferential anti-rotation at multiple angles and in multiple installation positions. This adapts to the installation requirements of the second plug-in part 21 at different angles on the mounting base 2, improving the assembly versatility and adaptability of the terminal assembly 1.

[0176] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. 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. 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. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A battery device, characterized in that, The battery device includes: A terminal assembly includes a main body and an anti-rotation component. The main body has a first insertion portion, and the anti-rotation component has an anti-rotation portion. The anti-rotation component is connected to the main body. A plurality of first insertion portions are distributed circumferentially at intervals, and the anti-rotation portion is inserted into any one of the first insertion portions. The mounting base has a second insertion portion, the main body is connected to the mounting base, and the second insertion portion is inserted into the anti-rotation portion; Conductive wires are connected to the main body component.

2. The battery device according to claim 1, characterized in that, The main body has a first hole, the anti-rotation component has a second hole, and the mounting base has a third hole. Fasteners are inserted into the second hole, the first hole, and the third hole to connect the anti-rotation component, the main body, and the mounting base.

3. The battery device according to claim 1, characterized in that, The anti-rotation component includes a first piece, and the anti-rotation part is bent toward one side of the first piece in the thickness direction.

4. The battery device according to claim 3, characterized in that, The main body includes a second piece, which forms the first insertion portion, and the first piece and the second piece are stacked together.

5. The battery device according to claim 4, characterized in that, The main body includes a support portion and a crimping portion. The support portion is connected to the second sheet body, and the crimping portion is connected to the support portion. The crimping portion and the support portion together clamp the end of the conductive wire.

6. The battery device according to any one of claims 1 to 5, characterized in that, The battery device includes: Box; At least two battery cells are disposed within the housing; The box body, the terminal assembly, the mounting base and the conductive wire are all disposed inside the box body, and the box body is disposed inside or outside the enclosure.

7. The battery device according to claim 6, characterized in that, The battery device includes a battery management unit, and the battery device includes at least one of a high-voltage relay, a fuse, and a high-voltage connector disposed in the housing. At least one of the high-voltage relay, the fuse, and the high-voltage connector is connected to the mounting base, and the conductive wire is connected to the battery management unit.

8. A terminal assembly, characterized in that, The device includes a main body and an anti-rotation component. The main body has a first insertion portion, and the anti-rotation component has an anti-rotation portion. The anti-rotation component is connected to the main body. A plurality of first insertion portions are distributed circumferentially at intervals, and the anti-rotation portion is inserted into any one of the first insertion portions.

9. The terminal assembly according to claim 8, characterized in that, The main body has a first hole, the anti-rotation component has a second hole, and fasteners are inserted into the second hole and the first hole to connect the anti-rotation component and the main body.

10. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1 to 7.

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