Electric connection assembly, battery device and electric equipment

Abstract

The utility model discloses an electric connection assembly, a battery device and electric equipment. The electric connection assembly comprises a shell and a connection unit. The shell is provided with a containing cavity, and the connecting unit is arranged in the shell. The connecting unit comprises an insulating shell and a terminal connecting piece, the terminal connecting piece is arranged in the insulating shell, and the terminal connecting piece is used for electrically connecting the two wire harnesses. Wherein the shell is provided with a plurality of first connecting parts, the insulating shell is provided with a second connecting part, and the second connecting part is connected with any one of the first connecting parts, so that the connecting unit is connected with the shell. According to the technical scheme, the stability of the battery device in the operation process can be improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and particularly to an electrical connection component, a battery device, and an electrical device. Background Art

[0002] With the development of new energy technologies, batteries are increasingly widely used, such as in mobile phones, laptops, battery cars, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, and electric tools.

[0003] The development of battery technologies needs to consider multiple design factors simultaneously. How to improve the stability during the operation of battery devices is a research direction in the field of batteries. Summary of the Utility Model

[0004] In view of the above problems, the present application provides an electrical connection component, a battery device, and an electrical device, which can improve the stability during the operation of the battery device.

[0005] In a first aspect, the present application provides an electrical connection component, including a housing and a connection unit. The housing has a receiving cavity, and the connection unit is disposed inside the housing. The connection unit includes an insulating shell and a terminal connector. The terminal connector is disposed inside the insulating shell and is used for electrically connecting two wire harnesses. Among them, a plurality of first connection parts are provided on the housing, and a second connection part is provided on the insulating shell. The second connection part is connected to any one of the first connection parts to connect the connection unit to the housing.

[0006] In the technical solution of the embodiment of the present application, by providing a housing to accommodate the connection unit and the connecting wire harness therein, it is convenient for the electrical connection and installation and fixation of the connecting wire harness. The insulating shell is provided to insulate the connection unit and the connecting wire harness, improving the insulation performance between the connecting wire harnesses. In particular, by providing a plurality of first connection parts on the housing, the second connection part can be connected to different first connection parts, thereby adjusting the relative position inside the housing to match different creepage distance requirements, thus improving the stability during the operation of the battery device and at the same time improving the efficiency of wire harness assembly in the battery device.

[0007] In some embodiments, the outer shell includes an upper shell and a lower shell that are oppositely arranged in a first direction. The upper shell and the lower shell enclose to form a receiving cavity. The upper shell is provided with a first convex portion, and the lower shell is provided with a first concave portion. The first convex portion and the first concave portion cooperate to connect the upper shell and the lower shell. The number of the first convex portions is multiple, and the multiple first convex portions are arranged at intervals in the first direction. In the above structure, dividing the outer shell into the upper shell and the lower shell facilitates the installation of the connecting unit and improves the assembly convenience of the terminal connector. The multiple first convex portions are arranged at intervals in the first direction, which can adjust the distance between the upper shell and the lower shell, adapt to insulating shells of different specifications and sizes, and improve the installation stability and structural strength of the insulating shell.

[0008] In some embodiments, multiple first connecting portions are arranged at intervals on the outer shell in a second direction, and the second direction is perpendicular to the first direction. In the above structure, arranging the multiple first connecting portions at intervals in the second direction can adjust the installation position of the insulating shell in the second direction, so as to adjust the creepage distance between the terminal connector and the external electrical component, improve the insulation protection performance, and thus improve the stability during the operation of the battery device.

[0009] In some embodiments, the upper shell includes a top plate and two first side plates connected to the top plate, and the lower shell includes a bottom plate and two second side plates connected to the bottom plate. The top plate and the bottom plate are oppositely arranged in the first direction, the first side plates and the second side plates are oppositely arranged in the second direction, the first convex portion is arranged on the first side plate, and the first concave portion is arranged on the second side plate. In the above structure, the top plate of the upper shell and the bottom plate of the lower shell can provide good structural support for the connecting unit and limit the displacement of the connecting unit in the first direction. The first side plates and the second side plates can limit the displacement of the connecting unit in the second direction. The above structure can improve the stability of the installation position of the connecting unit.

[0010] In some embodiments, the insulating shell has a receiving groove that penetrates in a third direction, and the third direction is perpendicular to the first direction and the second direction respectively. The terminal connector is arranged in the receiving groove. The terminal connector is provided with a second convex portion, and the insulating shell is provided with a second concave portion corresponding to the second convex portion. The second convex portion and the second concave portion are connected to limit the relative movement of the terminal connector with respect to the insulating shell. In the above structure, the receiving groove penetrates in the third direction, which facilitates the wire harness to pass through the insulating shell in the third direction and improves the assembly convenience of the connecting unit. By providing the second convex portion and the second concave portion, the relative movement of the terminal connector with respect to the insulating shell can be limited, the connection stability of the connecting wire harness can be improved, and the stability during the operation of the battery device can be further improved.

[0011] In some embodiments, one end of the second convex portion in the third direction is inclined toward the direction of the outer shell. In the above structure, the end of the second convex portion in the third direction is inclined, which can limit the relative movement of the insulating shell with respect to the outer shell in the third direction and improve the stability of the installation position of the terminal connector.

[0012] In some embodiments, a plurality of receiving grooves are provided in the insulating housing at intervals along a second direction. In the above structure, by providing a plurality of receiving grooves in the insulating housing, a plurality of terminal connectors can be provided in one insulating housing, improving the assembly efficiency.

[0013] In some embodiments, a limiting convex portion is provided on a side of the insulating housing facing the terminal connector, and the limiting convex portion is used to limit the movement of the terminal connector relative to the insulating housing in a third direction. In the above structure, by providing the limiting convex portion, the movement of the terminal connector relative to the insulating housing in the third direction can be limited, improving the stability of the installation position of the terminal connector.

[0014] In some embodiments, the limiting convex portions in two adjacent receiving grooves are arranged staggeredly along the second direction. The above structure can increase the creepage distance between two adjacent terminal connectors, improving the insulation safety performance.

[0015] In some embodiments, the number of insulating housings is plural, and at least one receiving groove is provided in each insulating housing. In the above structure, by increasing the number of insulating housings, the number of electrical connection components is increased, the number of wire harness connections is increased, and the integration performance and insulation safety of the electrical connection structure are improved.

[0016] In some embodiments, the insulating housing includes a first unit housing and a second unit housing. A first receiving groove is provided in the first unit housing, and a second receiving groove is provided in the second unit housing. The maximum dimension of the first receiving groove along the second direction is M1, and the maximum dimension of the second receiving groove along the second direction is M2, where M1 < M2. In the above structure, by providing receiving grooves with different size specifications, different terminal connectors can be matched to achieve matching of different interfaces.

[0017] In some embodiments, the terminal connector includes a slot portion and a terminal portion. The slot portion is provided in the receiving groove, and the slot portion is provided with an insertion opening extending in a third direction. The terminal portion is provided in the receiving groove, and the terminal portion has a plugging end matching the insertion opening. In the above structure, by providing the slot portion and the terminal portion, it is convenient for two wire harnesses to be plugged and connected, improving the connection efficiency of the terminal connector.

[0018] In some embodiments, a second convex portion is provided on at least one of the slot portion or the terminal portion. In the above structure, connecting at least one of the slot portion or the terminal portion to the housing improves the stability and position accuracy of the installation of the terminal connector.

[0019] In some embodiments, a first crimping portion is provided at one end of the slot portion away from the terminal portion, and the first crimping portion is used to connect a wire harness. A second crimping portion is provided at one end of the terminal portion away from the slot portion, and the second crimping portion is used to connect a wire harness. In the above structure, the provision of the first crimping portion and the second crimping portion to connect to the wire harness respectively improves the connection strength of the wire harness.

[0020] In some embodiments, the housing is an insulating housing, or an insulating layer is provided on the outer side of the housing. In the above structure, the insulating performance of the housing is improved.

[0021] In a second aspect, the present application provides a battery device, which includes the electrical connection component in the above embodiments.

[0022] In a third aspect, the present application provides an electrical equipment, which includes the battery device in the above embodiments, and the battery device is used to provide electrical energy.

[0023] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically enumerates the specific implementation manners of the present application. Description of the Drawings

[0024] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0025] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0026] Figure 2 Explosion schematic diagram of a battery device provided by some embodiments of the present application;

[0027] Figure 3 Structural schematic diagram of an electrical connection component provided by some embodiments of the present application;

[0028] Figure 4 Explosion schematic diagram of an electrical connection component provided by some embodiments of the present application;

[0029] Figure 5 Explosion schematic diagram of an electrical connection component provided by some other embodiments of the present application;

[0030] Figure 6 Explosion schematic diagram of a connection unit provided by some embodiments of the present application;

[0031] Figure 7 Structural schematic diagram of an electrical connection component provided by some other embodiments of the present application;

[0032] Figure 8 For Figure 7Schematic diagram of the structure of the A-A section;

[0033] Figure 9 Schematic diagram of the structure of the electrical connection component provided by some other embodiments of the present application;

[0034] Figure 10 is Figure 9 Schematic diagram of the structure of the B-B section;

[0035] Figure 11 Schematic diagram of the structure of the slot portion provided by some embodiments of the present application.

[0036] Detailed description of the reference numerals:

[0037] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box body; 5a. First box body part; 5b. Second box body part; 5c. Accommodating space; 6. Battery cell; 7. Electrical connection component; 701. Outer shell; 702. Connection unit; 703. Insulating shell; 704. Terminal connection part; 705. First connection part; 706. Second connection part; 707. Upper shell; 708. Lower shell; 709. First convex part; 710. First concave part; 711. Top plate; 712. First side plate; 713. Bottom plate; 714. Second side plate; 715. Second convex part; 716. Second concave part; 717. Limit convex part; 718. First unit shell; 719. Second unit shell; 720. Slot part; 721. Terminal part; 722. Insertion end; 723. Insertion port; 724. First crimping part; 725. Second crimping part; X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0038] The embodiments of the technical solutions of the present 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 the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise clearly and specifically defined.

[0041] Reference to "embodiments" in this text means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0043] In the description of the embodiments of the present application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0046] In this application, the term "and / or" merely describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0047] In the embodiments of this application, the same reference numerals represent the same components. And for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of this application, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0048] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism but also the case of approximately parallelism as conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity but also the case of approximately perpendicularity as conventionally recognized in engineering. Exemplarily, if the included angle between two directions is 85° - 95°, the two directions can be considered perpendicular; if the included angle between two directions is 0° - 5°, the two directions can be considered parallel.

[0049] The "plurality" mentioned in this application refers to two or more (including two).

[0050] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a battery cell that can activate the active material through charging after discharging.

[0051] The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of this application are not limited thereto.

[0052] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator is disposed between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) intercalate and deintercalate back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0053] In some embodiments, the positive electrode can be a positive electrode sheet, and the positive electrode sheet can include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0054] As an example, the positive electrode current collector has two surfaces opposite to each other in its own thickness direction, and the positive electrode active material is disposed on either or both of the two opposite surfaces of the positive electrode current collector.

[0055] As an example, the positive electrode current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as the metal foil, pure metals, alloys, and metals with surface treatment can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as 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.).

[0056] As an example, the positive electrode active material can include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials can also be used. These positive electrode active materials can be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates can include but not limited to lithium iron phosphate (such as LiFePO4 (which can also be abbreviated as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium manganese iron phosphate, and at least one of a composite material of lithium manganese iron phosphate and carbon. Examples of lithium transition metal oxides can include but not limited to lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (which can also be abbreviated as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O2 (which can also be abbreviated as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O2 (which can also be abbreviated as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O2 (which can also be abbreviated as NCM 622 ), LiNi 0.8 Co 0.1 Mn 0.1 O2 (which can also be abbreviated as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.8 Co 0.15 Al 0.05At least one of O2) and its modified compounds, etc. The modified compound refers to a substance obtained by means of modification such as doping or coating on the basis of the above substances.

[0057] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0058] 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 the metal foil, pure metals, alloys, and metals with surface treatment can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as substrates of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0059] As an example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material provided on at least one surface of the negative electrode current collector.

[0060] As an example, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is provided on any one or both of the two opposite surfaces of the negative electrode current collector.

[0061] As an example, the negative electrode active material can be a negative electrode active material for battery monomers well-known in the art. As an example, the negative electrode active material can 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. The silicon-based materials can be selected from at least one of elemental silicon, silicon oxides, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based materials can be selected from at least one of elemental tin, tin oxides, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as the negative electrode active material of battery monomers can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0062] In some embodiments, the negative electrode can be a foam metal. The foam metal can be foam nickel, foam copper, foam aluminum, foam alloy, or foam carbon, etc. When the foam metal is used as the negative electrode sheet, the negative electrode active material may not be provided on the surface of the foam metal, and of course, the negative electrode active material can also be provided.

[0063] As an example, the negative electrode active material can be filled or / and deposited in the negative electrode current collector.

[0064] In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0065] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0066] In some embodiments, the separator is a separator membrane. The present application does not particularly limit the type of the separator membrane, and any well-known porous structure separator membrane with good chemical stability and mechanical stability can be selected.

[0067] As an example, the main material of the separator membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics. The separator membrane can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator membrane 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 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 coated on the surface of the separator membrane.

[0068] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0069] In some embodiments, the battery cell further includes an electrolyte that functions to conduct ions between the positive and negative electrodes. The present application does not specifically limit the type of the electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel-like, or solid.

[0070] Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0071] In some embodiments, the electrolyte salt can 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 difluoro(oxalato)borate, lithium bis(oxalato)borate, lithium difluoro bis(oxalato)phosphate, and lithium tetrafluoro(oxalato)phosphate.

[0072] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene 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 can also be an ether solvent. The ether solvent can 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, methyltetrahydrofuran, diphenyl ether, and crown ether.

[0073] In some embodiments, the electrolyte may optionally further include additives. For example, the additives may include negative electrode film-forming additives, positive electrode film-forming additives, and additives that can improve certain properties of the battery cell, such as additives for improving the overcharge / quick charge performance of the battery cell, additives for improving the high-temperature performance of the battery cell, additives for improving the low-temperature performance of the battery cell, etc.

[0074] Among them, the gel electrolyte includes a polymer as a skeleton network and can be used in combination with an ionic liquid-lithium salt.

[0075] Among them, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0076] As an example, the polymer of the polymer solid electrolyte may include polyethers (polyethylene oxide), polysiloxanes, polycarbonates, polyacrylonitriles, polyvinylidene fluorides, polymethyl methacrylate, single-ion polymers, polyionic liquids, cellulose, etc.

[0077] As an example, the inorganic solid electrolyte can be one or more of oxide solid electrolytes (crystalline perovskite, sodium superionic conductor, garnet, amorphous LiPON film), sulfide solid electrolytes (crystalline lithium superionic conductor (lithium germanium phosphorus sulfur, argyrodite), amorphous sulfide), and halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0078] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to the polymer solid electrolyte.

[0079] The electrode assembly can be a wound structure, a laminated structure, or a hybrid structure of winding and laminating.

[0080] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0081] In some embodiments, the electrode assembly is a laminated structure.

[0082] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be respectively provided, and the multiple positive electrode sheets and the multiple negative electrode sheets are alternately stacked.

[0083] As an example, multiple positive electrode sheets can be provided, and the negative electrode sheet is folded to form multiple folded segments arranged in a stacked manner, and a positive electrode sheet is clamped between adjacent folded segments.

[0084] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form multiple folded segments arranged in a stacked manner.

[0085] As an example, multiple separator members may be provided and respectively disposed between any adjacent positive electrode plates or negative electrode plates.

[0086] As an example, the separator members may be continuously provided and disposed between any adjacent positive electrode plates or negative electrode plates by folding or winding.

[0087] In some embodiments, the shape of the electrode assembly may be cylindrical, flat, prismatic, or the like.

[0088] In some embodiments, the electrode assembly is provided with tabs, and the tabs can conduct current out of the electrode assembly. The tabs include positive tabs and negative tabs.

[0089] In some embodiments, the battery cell may include a housing. The housing may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc. In some embodiments, the housing may be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly, and the sealing bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag may be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0090] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal-prismatic battery, etc., and there is no particular limitation in this application.

[0091] In some embodiments, the housing includes an end cap and a housing body. The housing body is provided with an opening, and the end cap covers the opening. The housing body may be provided with one or more openings. One or more end caps may also be provided.

[0092] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal may be directly connected to the tab or indirectly connected to the tab through a current collector member. The electrode terminal may be disposed on the end cap or on the housing body.

[0093] Some electrical equipment is usually required to be provided in the battery device to ensure the normal and stable operation of the battery device. For example, in battery sampling or electrical connection, since there are differences in the voltages carried by each conductor in the circuit, when it is reflected on the plug connector, there are differences in the voltage differences between different terminals of the connector assembly. Therefore, in electrical protection, different requirements are also put forward for the electrical clearance and creepage distance required between the metal terminals of the connector assembly.

[0094] In view of this, the present application provides an electrical connection component for use in the electrical connection components of a battery device. An outer shell is provided in the electrical connection component to accommodate the connection unit and the connection wire harness therein, facilitating the electrical connection and installation and fixation of the connection wire harness. An insulating shell is provided to insulate the connection unit and the connection wire harness, improving the insulation performance between the connection wire harnesses. In particular, a plurality of first connection parts are provided on the outer shell, and the second connection part can be connected to different first connection parts, thereby adjusting the relative position within the outer shell to match different creepage distance requirements, improving the stability during the operation of the battery device, and at the same time improving the efficiency of wire harness assembly in the battery device.

[0095] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a mixed connection through a busbar component.

[0096] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0097] As an example, the battery cell assembly may be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells with cable ties.

[0098] In some embodiments, the battery device may be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0099] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body by fixing the battery module in the box body.

[0100] As an example, the battery cell assembly may also be accommodated in the box body by directly fixing a plurality of battery cells to the box body.

[0101] As an example, the box body may include a first box body and a second box body. The first box body and the second box body are buckled so that a closed space is formed inside the box body to accommodate the battery cell assembly. Here, "closed" means covered or closed, which can be sealed or non-sealed. The first box body may be a top cover or a bottom plate.

[0102] As an example, the box body 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 a closed space is formed inside the box body to accommodate the battery cell assembly.

[0103] In some embodiments, the box body may be a part of the chassis structure of a vehicle. For example, a part of the box body may become at least a part of the floor of the vehicle, or a part of the box body may become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0104] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery cells, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, power tools, vehicles, ships, and spacecrafts, etc. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0105] The electrical device can be a vehicle, mobile phone, portable device, laptop computer, ship, spacecraft, electric toy, power tool, etc. The vehicle can be a fuel vehicle, gas vehicle, or new energy vehicle. The new energy vehicle can be a pure electric vehicle, hybrid electric vehicle, or range-extended electric vehicle, etc.; the spacecraft includes airplanes, rockets, space shuttles, and spaceships, etc.; the electric toy includes stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc.; the power tool includes metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose special restrictions on the above electrical devices.

[0106] For the convenience of description, the following embodiments will take the electrical device as a vehicle as an example for illustration.

[0107] Figure 1 It is a schematic structural diagram of a vehicle provided in some embodiments of the present application.

[0108] As shown in FIG. 1, a battery device 2 is provided inside the vehicle 1. The battery device 2 can be arranged at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used for power supply of the vehicle 1. For example, the battery device 2 can serve as the operating power source of the vehicle 1.

[0109] The vehicle 1 may further include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the working power requirements during the start, navigation, and driving of the vehicle 1.

[0110] In some embodiments of the present application, the battery device 2 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0111] Figure 2 It is an explosion schematic diagram of a battery provided in some embodiments of the present application. As Figure 2 shown, the battery device 2 includes a box body 5 and battery cells 6. The battery cells 6 are accommodated in the box body 5. The battery cells 6 can be the smallest units that make up the battery.

[0112] The housing 5 is used to accommodate battery cells 6, and the housing 5 can have various structures. In some embodiments, the housing 5 may include a first housing part 5a and a second housing part 5b. The first housing part 5a and the second housing part 5b cover each other, and the first housing part 5a and the second housing part 5b jointly define an accommodation space 5c for accommodating the battery cells 6. The second housing part 5b can be a hollow structure with an open end, and the first housing part 5a is a plate-like structure. The first housing part 5a covers the open side of the second housing part 5b to form the housing 5 with the accommodation space 5c. Both the first housing part 5a and the second housing part 5b can also be hollow structures with an open side, and the open side of the first housing part 5a covers the open side of the second housing part 5b to form the housing 5 with the accommodation space 5c. Of course, the first housing part 5a and the second housing part 5b can have various shapes, such as a cylinder, a cuboid, etc.

[0113] To improve the sealing performance after the connection between the first housing part 5a and the second housing part 5b, a sealing member, such as sealant, sealing ring, etc., can also be provided between the first housing part 5a and the second housing part 5b.

[0114] Assume that the first housing part 5a covers the top of the second housing part 5b. The first housing part 5a can also be called the upper cover, and the second housing part 5b can also be called the lower housing.

[0115] In the battery device 2, the battery cells 6 can be one or multiple. If there are multiple battery cells 6, the multiple battery cells 6 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 6.

[0116] The multiple battery cells 6 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 6 is accommodated in the housing 5. Of course, it can also be that multiple battery cells 6 are first connected in series, in parallel, or in a mixed connection to form battery modules, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the housing 5.

[0117] Please refer to Figures 3 to 6 , Figure 3 which is a schematic structural diagram of the electrical connection component provided in some embodiments of the present application, Figure 4 which is an exploded schematic diagram of the electrical connection component provided in some embodiments of the present application, Figure 5 which is an exploded schematic diagram of the electrical connection component provided in some other embodiments of the present application, Figure 6 which is an exploded schematic diagram of the connection unit provided in some embodiments of the present application.

[0118] As shown in the figure, an embodiment of the present application provides an electrical connection assembly 7, including a housing 701 and a connection unit 702. The housing 701 has a receiving cavity, and the connection unit 702 is disposed within the housing 701. The connection unit 702 includes an insulating housing 703 and a terminal connector 704. The terminal connector 704 is disposed within the insulating housing 703 and is used to electrically connect two wire harnesses. Among them, a plurality of first connection portions 705 are provided on the housing 701, and a second connection portion 706 is provided on the insulating housing 703. The second connection portion 706 is connected to any one of the first connection portions 705 to connect the connection unit 702 to the housing 701.

[0119] The electrical connection assembly 7 is a component for connecting electrical components that need to be connected or plugged in the battery device 2.

[0120] The housing 701 is usually made of materials with a certain structural strength. Exemplarily, materials such as stainless steel, aluminum alloy, and polycarbonate ceramic can be used. To improve the insulation performance of the housing 701, an insulating coating can be provided on the inner or outer wall of the housing 701. Optionally, the housing 701 is provided with connection components for connecting to the box body 5 of the battery device 2, such as bolts, mounting grooves, or mounting holes, to facilitate the stable installation of the housing 701. The plurality of first connection portions 705 provided on the housing 701 refer to the first connection portions 705 that are spaced apart and have substantially the same structure on the housing 701, so that any one of the first connection portions 705 can form a stable connection with the second connection portion 706.

[0121] The terminal connector 704 is a component for connecting two wire harnesses and can usually be a plug-in or lapping connection structure to improve the connection convenience of the connection unit 702.

[0122] The insulating housing 703 is an insulating component independent of the outer housing 701. A space for accommodating the terminal connection member 704 is formed inside the insulating housing 703 to insulate the terminal connection member 704. Exemplarily, materials such as epoxy resin, phenolic resin, silica gel, silicone rubber, and ceramics can be used for manufacturing. The above-mentioned materials all have good insulation properties, high temperature resistance, corrosion resistance, and relatively high structural strength. The second connection portion 706 on the insulating housing 703 is correspondingly arranged with the first connection portion 705 on the outer housing 701, which means that the first connection portion 705 and the second connection portion 706 are connected by a fixed connection or a detachable connection method. The arrangement of the first connection portion 705 and the second connection portion 706 can improve the connection efficiency between the insulating housing 703 and the outer housing 701 and the accuracy of the connection position. Exemplarily, the first connection portion 705 and the second connection portion 706 can be a concave portion and a convex portion that fit together, or a threaded connection hole and a connection bolt. Or the outer housing 701 and the insulating housing 703 are connected by snap connection, plug connection, welding connection, adhesive connection, or riveting connection, etc.

[0123] In the technical solution of the embodiment of the present application, by providing the outer housing 701 to accommodate the connection unit 702 and the connection wire harness therein, it is convenient for the electrical connection and installation and fixation of the connection wire harness. By providing the insulating housing 703, the connection unit 702 and the connection wire harness can be insulated, improving the insulation performance between the connection wire harnesses. In particular, by providing a plurality of first connection portions 705 on the outer housing 701, the second connection portion 706 can be connected to different first connection portions 705, thereby adjusting the relative position inside the outer housing 701 to match different creepage distance requirements, thereby improving the stability during the operation of the battery device 2 and at the same time improving the assembly efficiency of the wire harness in the battery device 2.

[0124] In some embodiments of the present application, the outer housing 701 includes an upper housing 707 and a lower housing 708 that are oppositely arranged along the first direction X. The upper housing 707 and the lower housing 708 enclose to form an accommodation cavity. A first convex portion 709 is provided on the upper housing 707, and a first concave portion 710 is provided on the lower housing 708. The first convex portion 709 and the first concave portion 710 cooperate to connect the upper housing 707 and the lower housing 708. The number of the first convex portions 709 is multiple, and the multiple first convex portions 709 are arranged at intervals along the first direction X.

[0125] Dividing the outer housing 701 into the upper housing 707 and the lower housing 708 can increase the installation opening after opening, so that the connection unit 702 (terminal connection member 704) can be more easily installed inside. This design allows installation from above or below, avoiding the difficulty of operating in a narrow space.

[0126] By arranging a plurality of first convex portions 709 at intervals along the first direction X, the distance between the upper housing 707 and the lower housing 708 can be adjusted, so as to adapt to insulating cases 703 of different thicknesses or heights. This design increases the versatility and flexibility of the outer shell 701.

[0127] In the above structure, dividing the outer shell 701 into the upper housing 707 and the lower housing 708 facilitates the installation of the connecting unit 702 and improves the assembly convenience of the terminal connector 704. The plurality of first convex portions 709 are arranged at intervals along the first direction X, which can adjust the distance between the upper housing 707 and the lower housing 708, adapt to insulating cases 703 of different specifications and sizes, and improve the installation stability and structural strength of the insulating case 703.

[0128] Optionally, the number of the first concave portions 710 is multiple, and the multiple first concave portions 710 are arranged at intervals along the first direction X. The arrangement of the multiple first concave portions 710 provides more adjustment points, improves the connection strength and stability between the outer shell 701 and the insulating case 703, and enables the distance between the upper housing 707 and the lower housing 708 to be adjusted more flexibly.

[0129] In some embodiments of the present application, a plurality of first connecting portions 705 are arranged at intervals along a second direction Y on the outer shell 701, and the second direction Y is perpendicular to the first direction X.

[0130] The creepage distance refers to the shortest distance between two conductive components measured along the insulating surface. In electrical design, the creepage distance is an important safety parameter because it is directly related to the insulation strength of electrical equipment. By adjusting the installation position of the insulating case 703 along the second direction Y, the creepage distance between the terminal connector 704 and the external electrical component can be correspondingly changed. This helps to ensure that the equipment meets specific safety standards and requirements, especially in high-voltage or high-humidity environments. Increasing the creepage distance is one of the effective methods to improve the insulation protection performance. By optimizing the installation position of the insulating case 703, the potential risks caused by electrical discharges (such as arc flashovers) can be minimized. In addition, the spaced arrangement of the plurality of first connecting portions 705 also provides additional support and fixing points, which helps to maintain the stability and integrity of the insulating case 703, thereby further enhancing the insulation protection.

[0131] In the above structure, arranging the plurality of first connecting portions 705 at intervals along the second direction Y can adjust the installation position of the insulating case 703 along the second direction Y to adjust the creepage distance between the terminal connector 704 and the external electrical component, improve the insulation protection performance, and thus improve the stability during the operation of the battery device 2.

[0132] In some embodiments of the present application, the upper housing 707 includes a top plate 711 and two first side plates 712 connected to the top plate 711. The lower housing 708 includes a bottom plate 713 and two second side plates 714 connected to the bottom plate 713. The top plate 711 and the bottom plate 713 are disposed opposite to each other along the first direction X, and the first side plates 712 and the second side plates 714 are disposed opposite to each other along the second direction Y. The first convex portion 709 is provided on the first side plate 712, and the first concave portion 710 is provided on the second side plate 714.

[0133] The top plate 711 of the upper housing 707 and the bottom plate 713 of the lower housing 708, as the main structural components, are disposed opposite to each other along the first direction X and jointly form a stable framework. This framework provides a solid support foundation for the internal connection unit 702, ensuring its stability and reliability under various operating conditions. The rigid design of the top plate 711 and the bottom plate 713 also helps to resist external pressure and vibration, protecting the internal electrical components from damage.

[0134] The first side plates 712 and the second side plates 714 are respectively connected to the top plate 711 and the bottom plate 713 and are disposed opposite to each other along the second direction Y. This design forms a closed space, effectively restricting the displacement of the connection unit 702 along the second direction Y. This is crucial for maintaining the correct alignment of the connection unit 702 and preventing it from loosening during long-term operation.

[0135] This housing 701 structure is relatively simple and modular, making the manufacturing and assembly processes more efficient and easy to manage. Each component can be manufactured separately and then assembled, thereby reducing production costs and improving production efficiency.

[0136] In the above structure, the top plate 711 of the upper housing 707 and the bottom plate 713 of the lower housing 708 can provide good structural support for the connection unit 702 and restrict the displacement of the connection unit 702 along the first direction X. The first side plates 712 and the second side plates 714 can restrict the displacement of the connection unit 702 along the second direction Y. The above structure can improve the stability of the installation position of the connection unit 702.

[0137] Such as Figure 6As shown, in some embodiments of the present application, the insulating housing 703 has a receiving groove penetrating along the third direction Z, where the third direction Z is perpendicular to the first direction X and the second direction Y respectively. The terminal connector 704 is disposed in the receiving groove. A second convex portion 715 is provided on the terminal connector 704, and a second concave portion 716 corresponding to the second convex portion 715 is provided on the insulating housing 703. The second convex portion 715 is connected to the second concave portion 716 to limit the relative movement of the terminal connector 704 with respect to the insulating housing 703. The insulating housing 703 has a receiving groove penetrating along the third direction Z, forming a structure similar to a cylinder with openings at both ends. In the above structure, electrical connection components such as wire harnesses can smoothly pass through the insulating housing 703 along the third direction Z. This layout not only simplifies the assembly process, reduces the assembly time, but also improves the assembly accuracy and efficiency. In addition, the through design of the receiving groove helps with heat dissipation, especially in the battery device 2 with high power or long-term operation, which helps to maintain the temperature stability of internal components and extend the service life.

[0138] The second convex portion 715 provided on the terminal connector 704 is in close fit with the corresponding second concave portion 716 on the insulating housing 703. This connection method effectively restricts the movement of the terminal connector 704 relative to the insulating housing 703. This fixing effect ensures a stable connection between the insulating housing 703 and the terminal connector 704, reduces the risk of loosening or displacement caused by vibration or external impact, and improves the stability of the terminal connector 704. This helps to reduce electrical faults caused by poor connection or loosening and improves the operating reliability of the entire battery device 2.

[0139] In the above structure, the receiving groove penetrates along the third direction Z, which facilitates the wire harness to pass through the insulating housing 703 along the third direction Z and improves the convenience of assembling the connection unit 702. By providing the second convex portion 715 and the second concave portion 716, the relative movement of the terminal connector 704 with respect to the insulating housing 703 can be restricted, the stability of the connected wire harness is improved, and further the stability during the operation of the battery device 2 is improved.

[0140] In some embodiments of the present application, one end of the second convex portion 715 along the third direction Z is inclined towards the direction of the outer housing 701. Optionally, the second convex portion 715 can expand and contract relative to the terminal connector 704 along the first direction X. Exemplarily, the second convex portion 715 is a spring piece connected to the terminal connector 704.

[0141] During installation, the upper housing 707 can be moved along the first direction X towards the second convex portion 715, and the second convex portion 715 can be installed into the second concave portion 716. The end of the second convex portion 715 is inclined along the third direction Z to form an inclined surface, which cooperates with the second concave portion 716 on the outer housing 701, and can effectively limit the movement of the insulating housing 703 relative to the outer housing 701 along the third direction Z. The insulating housing 703 can maintain a stable position after assembly and will not be displaced due to external factors (such as vibration, impact, etc.). The inclined design of the second convex portion 715 not only limits the movement of the insulating housing 703, but also enhances the connection strength between the insulating housing 703 and the outer housing 701 by increasing the contact area and friction. This enhanced connection strength helps to resist external pressure and vibration and protects the internal electrical components from damage.

[0142] In the above structure, the end of the second convex portion 715 is inclined along the third direction Z, which can limit the movement of the insulating housing 703 relative to the outer housing 701 along the third direction Z and improve the stability of the installation position of the terminal connector 704.

[0143] In some embodiments of the present application, a plurality of receiving grooves are provided in the insulating housing 703 at intervals along the second direction Y. The receiving grooves are arranged at intervals along the second direction Y, which can make full use of the internal space of the insulating housing 703, and at the same time can also adjust the position of the insulating housing 703 along the second direction Y, so as to adjust the creepage distance or electrical clearance between the terminal connector 704 and other electrical components, thereby improving the insulation safety performance. The design of a plurality of receiving grooves provides additional flexibility, and the number and layout of the terminal connectors 704 can be adjusted according to specific requirements or changes in the application scenario.

[0144] In the above structure, by providing a plurality of receiving grooves in the insulating housing 703, a plurality of terminal connectors 704 can be arranged in one insulating housing, improving the assembly efficiency.

[0145] As Figure 7 and Figure 8 shown, in some embodiments of the present application, a limiting convex portion 717 is provided on the side of the insulating housing 703 facing the terminal connector 704, and the limiting convex portion 717 is used to limit the movement of the terminal connector 704 relative to the insulating housing 703 along the third direction Z.

[0146] Optionally, the limiting convex portion 717 is provided in the groove wall of the receiving groove of the insulating housing 703. Exemplarily, the limiting convex portion 717 can be a dot-shaped protrusion, a strip-shaped protrusion, or the limiting convex portion 717 is arranged to surround the inner circumference of the groove wall of the receiving groove. And the limiting convex portion 717 abuts against the end surface of the terminal connector 704 along the third direction Z.

[0147] Optionally, the number of the limiting convex portions 717 is two, and the two limiting convex portions 717 respectively abut against two ends of the terminal connector 704 along the third direction Z.

[0148] By providing the limiting convex portions 717, the insulating housing 703 provides an additional fixing point for the terminal connector 704. This fixing point not only enhances the connection strength between the terminal connector 704 and the insulating housing 703, but also improves the stability of the entire system. During long-term use, the terminal connector 704 may gradually become loose due to vibrations, temperature changes or other factors. The presence of the limiting convex portions 717 can effectively prevent this situation from occurring, because it provides a physical barrier for the terminal connector 704 to prevent it from moving along the third direction Z and causing loosening.

[0149] In the above structure, by providing the limiting convex portions 717, the movement of the terminal connector 704 relative to the insulating housing 703 along the third direction Z can be restricted, and the stability of the installation position of the terminal connector 704 is improved.

[0150] Such as Figure 9 and Figure 10 As shown, in some embodiments of the present application, the limiting convex portions 717 in two adjacent receiving grooves are arranged staggeredly along the second direction Y. The two limiting convex portions 717 being arranged staggeredly along the second direction Y means that a straight line is drawn along the second direction Y, and the two limiting convex portions 717 can be respectively located on both sides of the straight line.

[0151] By arranging the limiting convex portions 717 in two adjacent receiving grooves staggeredly, the creepage distance between two adjacent terminal connectors 704 can be effectively increased. The increased creepage distance directly improves the insulation safety performance of the electrical system. This means that the system can better resist voltage stress and reduces the possibility of electrical faults caused by insulation failure. In addition, the staggeredly arranged limiting convex portions 717 can also serve as an additional physical barrier to prevent short circuits caused by accidental contact of external objects (such as metal fragments, water droplets, etc.) with the terminal connector 704.

[0152] The above structure can increase the creepage distance between two adjacent terminal connectors 704 and improve the insulation safety performance.

[0153] In some embodiments of the present application, the number of the insulating housings 703 is multiple, and at least one receiving groove is provided in each insulating housing 703. Exemplarily, the multiple insulating housings 703 are sequentially arranged in the outer housing 701 along the first direction X, or the multiple insulating housings 703 are first arranged in the outer housing 701 along the second direction Y. The arrangement manner of the insulating housings 703 can be reasonably set according to the space in the outer housing 701 and the number of the insulating housings 703, and is not limited herein.

[0154] By increasing the number of insulating shells 703, the number of electrical connection components 7 (such as terminal connectors 704) can be correspondingly increased. This means that the system can support more electrical connections, thereby improving the system's functionality and flexibility. The receiving grooves within each insulating shell 703 are used to receive and fix wire harnesses or cables. Therefore, increasing the number of insulating shells 703 also directly increases the number of wire harness connections. This is particularly important for complex electrical systems that need to handle a large number of signals or power lines. The design of multiple insulating shells 703 allows multiple electrical connection components 7 to be integrated into a compact space. This integration not only reduces the physical space required but also simplifies the system's wiring and connections, improving the overall structural efficiency and maintainability. Each insulating shell 703 provides an additional electrical isolation layer, which helps prevent current leakage or short circuits. By increasing the number of insulating shells 703, the insulation safety of the system can be further enhanced, especially in high-voltage or high-current application scenarios. In some cases, the design of multiple insulating shells 703 can also help optimize the heat dissipation performance of the system. The space between the insulating shells 703 can serve as a heat dissipation channel to help dissipate the heat generated by the electrical connection components 7, thus maintaining the stable operation of the system.

[0155] In the above structure, by increasing the number of insulating shells 703, the number of electrical connection components 7 is increased, the number of wire harness connections is increased, and the integration performance and insulation safety of the electrical connection structure are improved.

[0156] In some alternative embodiments, a connecting member is provided between two adjacent insulating shells 703. Exemplarily, two adjacent insulating shells 703 can be bolted, snap-connected, or adhesively connected to improve the installation stability of the insulating shells 703.

[0157] As Figure 7 shown, in some embodiments of the present application, the insulating shell 703 includes a first unit shell 718 and a second unit shell 719. A first receiving groove is provided in the first unit shell 718, and a second receiving groove is provided in the second unit shell 719. The maximum dimension of the first receiving groove along the second direction Y is M1, and the maximum dimension of the second receiving groove along the second direction Y is M2, where M1 < M2.

[0158] In the above embodiments, the number of insulating shells 703 is two, namely the first unit shell 718 and the second unit shell 719. Optionally, the number of insulating shells 703 is more than two, and it can also include a third unit shell and a fourth unit shell, and receiving grooves of different sizes are provided in different unit shells.

[0159] The first unit housing 718 and the second unit housing 719 have receiving grooves with different sizes, which can match terminal connectors 704 of different sizes. Different electrical applications may require the use of terminal connectors 704 of different sizes and specifications. By designing the first receiving groove and the second receiving groove to have different sizes, the insulating housing 703 can flexibly adapt to these different terminal connectors 704. Therefore, there is no need to design a separate insulating housing 703 for each size of terminal connector 704, thus reducing production costs and complexity.

[0160] In an electrical system, different terminal connectors 704 may have different electrical interfaces, such as different voltage levels, current capacities, or signal types. By designing the receiving grooves to have different sizes, it can be ensured that each terminal connector 704 is correctly matched with its corresponding electrical interface. This helps prevent electrical faults or damages caused by incorrect connections.

[0161] By integrating receiving grooves of different sizes into the design of a single insulating housing 703, space can be utilized more effectively. This helps reduce the overall volume and weight of the system, especially in applications where space is limited.

[0162] The above technical solution can match different terminal connectors 704 and achieve the matching of different electrical interfaces, thereby improving the flexibility, scalability, reliability, and safety of the system. This design not only reduces production costs and complexity but also optimizes space utilization and simplifies the assembly process.

[0163] As Figure 6 and Figure 11 shown, in some embodiments of the present application, the terminal connector 704 includes a slot portion 720 and a terminal portion 721. The slot portion 720 is disposed in the receiving groove, and the slot portion 720 is provided with an insertion interface 723 extending in the third direction Z. The terminal portion 721 is disposed in the receiving groove, and the terminal portion 721 has a plugging end 722 that matches the insertion interface 723. The plugging end 722 is inserted into the insertion interface 723 to plug the terminal portion 721 and the slot portion 720.

[0164] The matching design between the slot portion 720 and the terminal portion 721 ensures the stability and reliability of the connection. When the insertion interface 723 and the plugging end 722 are closely fitted, the electrical contact area between them is maximized, thereby reducing contact resistance and heat loss. In addition, this design can also reduce the risk of connection loosening or detachment caused by vibration or external force.

[0165] The design of the slot portion 720 and the terminal portion 721 makes the connection between wire harnesses simpler and more efficient. Compared with traditional connection methods (such as welding, screwing, etc.), the plugging connection does not require additional tools or complex operation steps, thus shortening the connection time.

[0166] In the above structure, the slot portion 720 and the terminal portion 721 are provided to facilitate the plug-in connection of two wire harnesses, thereby improving the connection efficiency of the terminal connector 704.

[0167] In some embodiments of the present application, the second convex portion 715 is provided on at least one of the slot portion 720 or the terminal portion 721.

[0168] By providing the second convex portion 715 on at least one of the slot portion 720 or the terminal portion 721, it can ensure that the terminal connector 704 is firmly supported during the installation process. This supporting effect helps to prevent the terminal connector 704 from loosening or displacing during installation or use, thereby improving the stability of its installation.

[0169] Optionally, the number of the second concave portions 716 is two, and the number of the second convex portions 715 is two. The two second convex portions 715 are respectively provided on the slot portion 720 or the terminal portion 721.

[0170] The second convex portion 715 also helps to ensure the correct position of the terminal connector 704 in the insulating housing 703 or the outer housing 701. When the second convex portion 715 cooperates with the corresponding structure (such as the groove or hole of the insulating housing 703), it acts as a positioning pin to ensure that the terminal connector 704 can be accurately installed in the predetermined position.

[0171] In the above structure, at least one of the slot portion 720 or the terminal portion 721 is connected to the outer housing 701, which improves the installation stability and position accuracy of the terminal connector 704.

[0172] In some embodiments of the present application, a first crimping portion 724 is provided at one end of the slot portion 720 away from the terminal portion 721, and the first crimping portion 724 is used to connect the wire harness. A second crimping portion 725 is provided at one end of the terminal portion 721 away from the slot portion 720, and the second crimping portion 725 is used to connect the wire harness.

[0173] Optionally, the first crimping portion 724 and the second crimping portion 725 have the same structure. Exemplarily, the first crimping portion 724 includes a support piece and a crimping piece connected to one side of the support piece along the second direction Y. The crimping piece is bent relative to the support piece and is disposed opposite to the support piece along the first direction X. The space between the crimping piece and the support piece is used to fix the connection end of the wire harness. The presence of the first crimping portion 724 and the second crimping portion 725 simplifies the installation process of the wire harness and the terminal connector 704. The installer only needs to insert the conductor part of the wire harness into the crimping portion and then use a crimping tool for crimping. This installation method does not require additional welding equipment or screwing tools, thereby saving installation time and cost.

[0174] The design of the first crimping portion 724 and the second crimping portion 725 is mainly to enhance the connection strength between the wire harness and the terminal connector 704. Through the crimping process, the conductor part of the wire harness is firmly fixed within the crimping portion, thus achieving a dual connection both electrically and mechanically. This connection method is more reliable than traditional soldering or screwing because it can withstand greater tensile and torsional forces and is not prone to loosening or falling off.

[0175] The design of the crimping portion not only improves the connection strength but also helps to enhance the electrical performance. Since the crimping portion is in close contact with the conductor part of the wire harness, the contact resistance can be reduced and the current transmission efficiency can be improved. In addition, the crimping portion can prevent problems such as poor contact or short circuit caused by vibration or external force.

[0176] In some embodiments of the present application, the housing 701 is an insulating housing 701, or an insulating layer is provided on the outer side of the housing 701.

[0177] The insulating housing 701 or the housing 701 with an insulating layer can effectively isolate the electrical components from the external environment, prevent current leakage or short circuit, and thus improve the safety of the system. This design is particularly suitable for high-voltage or high-current application scenarios and can reduce the risk of electrical fires or electric shock accidents occurring in the battery device 2.

[0178] In some alternative embodiments, the electrical connection component 7 includes a housing 701 and a connection unit 702. The housing 701 is an insulating housing 701, which has a receiving cavity, and the connection unit 702 is disposed within the housing 701. The connection unit 702 includes an insulating housing 703 and a terminal connection member 704. The terminal connection member 704 is disposed within the insulating housing 703 and is used to electrically connect two wire harnesses. Among them, a plurality of first connection portions 705 are provided on the housing 701, and a second connection portion 706 is provided on the insulating housing 703. The second connection portion 706 is connected to any one of the first connection portions 705 to connect the connection unit 702 to the housing 701. The housing 701 includes an upper housing 707 and a lower housing 708 that are oppositely disposed along a first direction X. The upper housing 707 and the lower housing 708 enclose to form a receiving cavity. A first recess 710 is provided on the upper housing 707, and a first protrusion 709 is provided on the lower housing 708. The first protrusion 709 cooperates with the first recess 710 to connect the upper housing 707 to the lower housing 708. The number of the first protrusions 709 is multiple, and the multiple first protrusions 709 are spaced along the first direction X. The plurality of first connection portions 705 are spaced along a second direction Y on the housing 701, and the second direction Y is perpendicular to the first direction X. The upper housing 707 includes a top plate 711 and two first side plates 712 connected to the top plate 711. The lower housing 708 includes a bottom plate 713 and two second side plates 714 connected to the bottom plate 713. The top plate 711 and the bottom plate 713 are oppositely disposed along the first direction X, the first side plates 712 and the second side plates 714 are oppositely disposed along the second direction Y, the first protrusion 709 is provided on the first side plate 712, and the first recess 710 is provided on the second side plate 714. The insulating housing 703 has a receiving groove that penetrates along a third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y respectively. The terminal connection member 704 is disposed within the receiving groove. A second protrusion 715 is provided on the insulating housing 703, and a second recess 716 corresponding to the second protrusion 715 is provided on the housing 701. The second protrusion 715 is connected to the second recess 716 and restricts the relative movement of the insulating housing 703 with respect to the housing 701. The number of the insulating housings 703 is multiple, and at least one receiving groove is provided within each insulating housing 703. The limiting protrusions 717 within adjacent two receiving grooves are staggered along the second direction Y. The terminal connection member 704 includes a slot portion 720 and a terminal portion 721. The slot portion 720 is disposed within the receiving groove, and the slot portion 720 is provided with an insertion opening 723 that extends along the third direction Z. The terminal portion 721 is disposed within the receiving groove, and the terminal portion 721 has a plugging end 722 that matches the insertion opening 723. A first crimping portion 724 is provided at one end of the slot portion 720 away from the terminal portion 721, and the first crimping portion 724 is used to connect a wire harness. A second crimping portion 725 is provided at one end of the terminal portion 721 away from the slot portion 720, and the second crimping portion 725 is used to connect a wire harness.

[0179] Embodiments of the present application provide a battery device 2, which includes the electrical connection component 7 in the above embodiments. Embodiments of the present application also provide an electrical device, which includes the battery device 2 in the above embodiments, and the battery device 2 is used to provide electrical energy. In the electrical connection component 7, the connection unit 702 and the connection wire harness are accommodated therein by providing a housing 701, which facilitates the electrical connection and installation and fixation of the connection wire harness. An insulating shell 703 is provided, which can insulate the connection unit 702 and the connection wire harness, improving the insulation performance between the connection wire harnesses. In particular, a plurality of first connection parts 705 are provided on the housing 701, and the second connection part 706 can be connected to different first connection parts 705, so as to adjust the relative position within the housing 701 to match different creepage distance requirements, thereby improving the stability during the operation of the battery device 2 and at the same time improving the efficiency of wire harness assembly in the battery device 2.

[0180] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrical connection assembly, characterized in that: include: A housing having a receiving cavity; A connection unit is arranged in the housing, the connection unit comprises an insulating shell and a terminal connector, the terminal connector is arranged in the insulating shell, and the terminal connector is used to electrically connect two wiring harnesses. The outer shell is provided with a plurality of first connecting parts, the insulating shell is provided with a second connecting part, and the second connecting part is connected to any one of the first connecting parts to connect the connecting unit to the outer shell.

2. The electrical connection assembly according to claim 1, characterized in that: The shell includes an upper shell and a lower shell that are relatively arranged along a first direction, and the upper shell and the lower shell enclose the accommodating cavity. The upper shell is provided with a first convex portion, and the lower shell is provided with a first concave portion. The first convex portion cooperates with the first concave portion to connect the upper shell and the lower shell. There are multiple first convex portions, and the multiple first convex portions are spaced apart along the first direction.

3. The electrical connection assembly according to claim 2, characterized in that: A plurality of the first connection portions are arranged on the housing at intervals along a second direction, and the second direction is perpendicular to the first direction.

4. The electrical connection assembly according to claim 3, characterized in that: The upper shell includes a top plate and two first side plates connected to the top plate, and the lower shell includes a bottom plate and two second side plates connected to the bottom plate, the top plate and the bottom plate are arranged opposite to each other along the first direction, the first side plate and the second side plate are arranged opposite to each other along the second direction, the first convex portion is arranged on the first side plate, and the first concave portion is arranged on the second side plate.

5. The electrical connection assembly according to claim 4, characterized in that: The insulating shell has a receiving groove that passes through along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively. The terminal connector is arranged in the receiving groove, and a second convex portion is provided on the terminal connector. The insulating shell is provided with a second concave portion corresponding to the second convex portion, and the second convex portion is connected to the second concave portion and limits the movement of the terminal connector relative to the insulating shell.

6. The electrical connection assembly according to claim 5, characterized in that: One end of the second protrusion along the third direction is inclined toward the housing.

7. The electrical connection assembly according to claim 6, characterized in that: The insulating shell is provided with a plurality of accommodating grooves spaced apart along the second direction.

8. The electrical connection assembly according to claim 7, characterized in that: A limiting protrusion is provided on a side of the insulating shell facing the terminal connector, and the limiting protrusion is used to limit the movement of the terminal connector relative to the insulating shell along the third direction.

9. The electrical connection assembly according to claim 8, characterized in that: The limiting protrusions in two adjacent accommodating grooves are staggered along the second direction.

10. The electrical connection assembly according to any one of claims 7 to 9, characterized in that: There are multiple insulating shells, and each insulating shell is provided with at least one accommodating groove.

11. The electrical connection assembly according to claim 10, characterized in that: The insulating shell includes a first unit shell and a second unit shell. The first unit shell is provided with a first accommodating groove, and the second unit shell is provided with a second accommodating groove. The maximum dimension of the first accommodating groove along the second direction is M1, and the maximum dimension of the second accommodating groove along the second direction is M2, wherein M1<M2.

12. The electrical connection assembly according to any one of claims 7 to 9, characterized in that: The terminal connector comprises: A slot portion, disposed in the receiving slot, the slot portion being provided with an insertion interface extending along the third direction; The terminal part is arranged in the accommodating groove, and the terminal part has a plug-in end matching the plug-in interface.

13. The electrical connection assembly according to claim 12, characterized in that: The second protrusion is provided at least one of the slot portion or the terminal portion.

14. The electrical connection assembly according to claim 12, characterized in that: A first crimping portion is provided at one end of the slot portion away from the terminal portion, and the first crimping portion is used to connect a wiring harness; A second crimping portion is provided at one end of the terminal portion away from the slot portion, and the second crimping portion is used for connecting a wire harness.

15. The electrical connection assembly according to any one of claims 1 to 9, characterized in that: The shell is an insulating shell, or an insulating layer is arranged on the outer side of the shell.

16. A battery device, characterized in that: The invention comprises an electrical connection assembly as claimed in any one of claims 1 to 15.

17. An electrical equipment, characterized in that: The electrical equipment comprises the battery device as claimed in claim 16, wherein the battery device is used to provide electrical energy.

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