Electrical connector, battery device and electric appliance

Abstract

An electric connector, a battery device and an electric appliance, the battery device (60) comprising an electric connector (65); wherein the electric connector (65) comprises a socket (10) having a plurality of slots (11), each slot (11) being provided with at least one first pin (12) respectively; and a split plug (20) comprising a plurality of plug parts (21) for connecting a plurality of cable groups (CA) respectively, the plurality of plug parts (21) being plugged into the plurality of slots (11) respectively, each plug part (21) having at least one second pin (211) and being electrically connected with the at least one first pin (12) in the corresponding slot (11) through the at least one second pin (211); wherein each plug part (21) is configured to be fixedly connected with the end of the corresponding cable group (CA) and electrically connected with the corresponding cable group (CA) through the at least one second pin (211).

Description

Technical Field

[0001] This disclosure relates to an electrical connector, a battery device, and an electrical appliance. Background Technology

[0002] Secondary batteries, especially lithium-ion batteries, have advantages such as high voltage, high specific energy, long cycle life, being environmentally friendly and pollution-free, having a wide operating temperature range, and low self-discharge. They are widely used in portable electronic devices, power equipment for new energy electric vehicles, and energy storage systems, playing a significant role in addressing environmental pollution and the energy crisis. With the widespread application of lithium-ion batteries, battery production efficiency has become a key concern for manufacturers. Summary of the Invention

[0003] In one aspect of this disclosure, a battery device is provided, comprising: an electrical connector; wherein the electrical connector includes:

[0004] A socket having multiple slots, each slot having at least one first pin; and

[0005] The split plug includes multiple plug portions for connecting multiple sets of cables respectively. The multiple plug portions are respectively inserted into the multiple slots. Each plug portion has at least one second pin and is electrically connected to at least one first pin in the corresponding slot through the at least one second pin.

[0006] Each plug is configured to be fixedly connected to the end of the cable of the corresponding group, and is electrically connected to the cable of the corresponding group through the at least one second pin.

[0007] In this embodiment, the electrical connector of the battery device includes a split plug, in which each plug portion can be fixedly connected to the end of a corresponding group of cables, and the multiple slots of the socket can be respectively inserted into each plug portion. Compared with the method of assembling multiple rows of cables on the plug in related technologies, the fixed connection between each group of cables and the corresponding plug portion in this embodiment can be carried out independently, without the need to assemble multiple rows of cables in the limited space of the plug itself as in related technologies. Therefore, the operating space is more abundant, making the assembly process more convenient and easier, and thus improving the production efficiency of the battery device using this electrical connector.

[0008] In some embodiments, at least one of the plurality of plug portions is configured to be fixedly and electrically connected to the corresponding group of cables by means of a piercing crimping method.

[0009] In this embodiment, the plug is fixedly and electrically connected to the corresponding group of cables by a piercing crimping method, which can improve the reliability of the connection and make assembly more convenient and quick.

[0010] In some embodiments, at least one of the plurality of plug portions is configured to be fixedly connected to the end of a plurality of cables arranged in a first direction in a corresponding group, the plurality of slots being spaced apart in a second direction, the first direction intersecting the second direction.

[0011] In this embodiment, multiple cables can be arranged along a first direction to form a ribbon cable. This makes it easier to design the plug portion to reduce space occupation in other directions intersecting the first direction, and also facilitates crimping between the plug portion and the plug portion. Multiple slots are arranged at intervals along a second direction, which helps to achieve a smaller distance between the slots so that the overall electrical connector is more compact.

[0012] In some embodiments, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the entry direction of the plurality of slots.

[0013] In this embodiment, the first direction of cable arrangement is perpendicular to the second direction of slot spacing, and both the first and second directions are perpendicular to the entry direction of the multiple slots, which makes the electrical connector structure more compact and reduces space occupation.

[0014] In some embodiments, at least one of the plurality of plug portions is provided with a snap-fit ​​structure between the plug portion and the corresponding slot.

[0015] In this embodiment, the snap-fit ​​structure between the plug and the slot allows for convenient and quick disassembly and installation of the plug relative to the slot.

[0016] In some embodiments, the snap-fit ​​structure includes:

[0017] A snap fastener is provided on the side wall surface of the plug portion and protrudes relative to the side wall surface of the plug portion;

[0018] A slot is formed on the side wall of the corresponding slot for engaging with the buckle.

[0019] In this embodiment, the engagement of the buckle protruding on the side wall surface of the plug with the slot on the side wall of the slot eliminates the need for assembling and disassembling other connectors, making it convenient to lock the plug relative to the slot during the insertion of the plug into the slot, and reducing the risk of the plug being accidentally pulled out unintentionally.

[0020] In some embodiments, the snap-fit ​​structure includes two sets of snaps and two sets of slots that engage with the two sets of snaps respectively, the two sets of snaps being located on both sides of the plug portion in a first direction; the plurality of slots are arranged at intervals along a second direction, the first direction intersecting the second direction.

[0021] In this embodiment, by providing two sets of latches on both sides of a first direction that intersects with the arrangement direction of multiple slots, the stability of the locking of the plug relative to the slot can be effectively achieved, and the possibility of interference of the latching structure with the insertion of adjacent plugs can be reduced or eliminated.

[0022] In some embodiments, at least one of the plurality of plug portions has a limiting portion for abutting against the socket when the latch is engaged with the slot to limit the maximum insertion depth of the plug portion.

[0023] In this embodiment, the limiting part, in conjunction with the snap-fit ​​structure, forms a reliable retaining function of the plug part within the slot in the insertion direction of the plug part relative to the slot.

[0024] In some embodiments, a guide engagement structure is provided between each plug portion and its corresponding slot, and the outline shape of the guide engagement structure of each group of plug portions and slots is different.

[0025] In this embodiment, the guide mating structure helps the plug to enter and be inserted into the corresponding slot more smoothly. By making the contour shape of the guide mating structure of each set of plugs and slots different, the risk of the plug being inserted into the wrong slot can be reduced, thereby improving the effectiveness and reliability of the electrical connection achieved by the electrical connector.

[0026] In some embodiments, the guide mating structure of each set of plug and slot includes a reinforcing rib and a guide mating part that guides and mates with the reinforcing rib. The reinforcing rib is located on the outer wall of the plug and the guide mating part is located on the inner wall of the slot. The reinforcing rib is different in at least one of the following: its setting position, size, cross-sectional shape and number in each plug.

[0027] In this embodiment, by setting at least one different reinforcing rib in terms of position, size, cross-sectional shape, and quantity to cooperate with the corresponding guide mating part, the foolproof design of the electrical connector is realized, which effectively reduces the possibility of incorrect plug insertion and signal interference, and makes the assembly process more convenient and smooth.

[0028] In some embodiments, each plug portion is configured to be fixedly connected to the end of a plurality of cables arranged along a first direction in a corresponding group, and the reinforcing ribs of each plug portion extend along a third direction and are located at different positions in the first direction, the third direction being parallel to the entry direction of the plurality of slots and perpendicular to the first direction.

[0029] In this embodiment, by providing reinforcing ribs on the connector portion in the form of a ribbon cable, the strength and rigidity of the connector portion are improved while achieving the guiding and mating function, which is beneficial to improving the reliability of the electrical connector.

[0030] In some embodiments, a positioning engagement structure is provided between adjacent plug portions among the plurality of plug portions to achieve positioning engagement between the adjacent plug portions in at least one direction.

[0031] In this embodiment, the positioning and mating structure can establish a positioning effect between adjacent plug parts, improve the stability and reliability of the plug part relative to the socket, and also help reduce the design requirements of the positioning structure on the socket.

[0032] In some embodiments, the plurality of slots are spaced apart along a second direction, and each plug portion is configured to be fixedly connected to the end of a plurality of cables arranged along a first direction in a corresponding group. The positioning and mating structure is used to realize the positioning and mating of the adjacent plug portions in at least one of the first direction, the second direction, and a third direction.

[0033] Wherein, the third direction is parallel to the entry direction of the plurality of slots, and both the first direction and the second direction are perpendicular to the third direction, and the first direction and the second direction are perpendicular to each other.

[0034] In this embodiment, the positioning and mating structure enables the positioning and mating of adjacent plug parts in at least one of the mutually perpendicular first, second and third directions, effectively improving the stability and reliability of the plug parts relative to the socket.

[0035] In some embodiments, the positioning and mating structure includes a lateral covering portion disposed on one of the adjacent plug portions and configured to cover both ends of the other plug portion in the first direction to achieve positioning and mating of the adjacent plug portions in the first direction.

[0036] In this embodiment, the adjacent plug portions can achieve effective positioning and engagement in the first direction by covering the two ends with the lateral covering portion, making it less likely for the two to wobble in the first direction, and even if they wobble, the amplitude of the wobble can be suppressed to reduce the impact on the electrical connection.

[0037] In some embodiments, the positioning and mating structure includes a support portion disposed on one side of one of the adjacent plug portions adjacent to another plug portion, and configured to support the other plug portion in the second direction to achieve positioning and mating of the adjacent plug portions in the second direction.

[0038] In this embodiment, when the plug portion or the cable connected to it is subjected to a compressive force or impact force in the second direction, the support portion can distribute the compressive force or impact force to adjacent plug portions, thereby enabling multiple plug portions to withstand the compressive force or impact as a whole, thus improving the reliability of the plug portion.

[0039] In some embodiments, the positioning and mating structure includes a blocking portion disposed on one side of one of the adjacent plug portions adjacent to another plug portion, and configured to block the other plug portion in the third-party direction to achieve positioning and mating of the adjacent plug portions in the third-party direction.

[0040] In this embodiment, when a plug portion blocked by the blocking part or its connected cable is subjected to an outward pulling force, the blocking part can distribute the pulling force to adjacent plug portions, thereby reducing the risk of the plug portion being accidentally pulled out. Furthermore, the blocking part can also be used to set the insertion / removal order of adjacent plug portions, so that a plug portion that is desired to be removed later is blocked by the blocking part and cannot be removed first.

[0041] In some embodiments, the positioning and mating structure includes: a lateral covering portion and a support portion, the lateral covering portion being located at both ends of one of the adjacent plug portions in the first direction, and the support portion being located at least partially at both ends of the other plug portion in the first direction, and located on the side of the other plug portion adjacent to the one plug portion in the second direction.

[0042] The lateral covering portion is configured to cover both ends of the other plug portion in the first direction and abut against and support the support portion in the second direction, so as to achieve positioning and engagement of the adjacent plug portions in the first and second directions.

[0043] In this embodiment, the lateral covering part and the support part achieve effective positioning and cooperation of adjacent plug parts in the first direction and the second direction, so that the adjacent plug parts suppress the occurrence and amplitude of shaking in the first direction, thereby reducing the impact on the electrical connection. When the plug part or the cable connected to it is subjected to the squeezing force or impact force in the second direction, the squeezing force or impact force can be distributed to the adjacent plug parts, so that multiple plug parts can be subjected to the squeezing or impact as a whole, thereby improving the reliability of the plug parts.

[0044] In some embodiments, the positioning and mating structure includes a blocking portion and a step portion, wherein the blocking portion is located on one side of one of the adjacent plug portions adjacent to another plug portion in the second direction, and the step portion is located on one side of the other plug portion adjacent to the one plug portion in the second direction, and has a step inner angle capable of at least partially accommodating the blocking portion;

[0045] The blocking portion is configured to be inserted into the inner corner of the step to block the step portion in the third direction, and to abut and support the step portion in the second direction, so as to achieve the positioning and engagement of the adjacent plug portion in the second direction and the third direction.

[0046] In this embodiment, the blocking portion and the step portion achieve effective positioning and engagement of adjacent plug portions in the second direction and the third direction. This allows the force to be distributed to adjacent plug portions when the plug portion or its connected cable is subjected to squeezing or impact forces in the second direction, or outward pulling forces, thereby improving the reliability of the plug portion and reducing the risk of the plug portion being accidentally pulled out. Moreover, the blocking portion and the step portion can also be used to set the insertion / removal order of adjacent plug portions, so that the plug portion that is desired to be pulled out later is blocked by the blocking portion and cannot be pulled out first.

[0047] In some embodiments, the battery device further includes:

[0048] Multiple battery cells;

[0049] Multiple busbars, each of which is electrically connected to an adjacent battery cell among the multiple battery cells;

[0050] Sampling circuit board; and

[0051] Multiple sampling terminals are electrically connected to the sampling circuit board and to the multiple busbars respectively;

[0052] The socket of the electrical connector is fixedly mounted on the sampling circuit board.

[0053] In this embodiment, the socket of the electrical connector fixed on the sampling circuit board can be conveniently plugged into a split plug, which not only meets the signal sampling requirements but also further improves assembly efficiency.

[0054] In one aspect of this disclosure, an electrical device is provided, comprising: the aforementioned battery device or the aforementioned electrical connector.

[0055] In this embodiment, electrical equipment using the aforementioned battery device or the aforementioned electrical connector is easier to assemble and maintain, and also helps to improve the reliability of power supply. Attached Figure Description

[0056] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0057] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0058] Figure 1These are schematic diagrams of the structure of some embodiments of the electrical equipment according to this disclosure;

[0059] Figure 2 This is an exploded schematic diagram of some embodiments of the battery device according to the present disclosure;

[0060] Figure 3 This is a schematic diagram of the mounting structure of some embodiments of the battery device according to the present disclosure;

[0061] Figures 4-6 These are schematic diagrams of the insertion structure from different perspectives of some embodiments of the electrical connectors disclosed herein.

[0062] Figure 7 yes Figure 6 An exploded view of the embodiment shown;

[0063] Figure 8 This is a schematic diagram of the socket structure according to some embodiments of the electrical connector disclosed herein;

[0064] Figure 9 This is a schematic diagram of the positioning and mating structure of a split plug according to some embodiments of the electrical connector disclosed herein;

[0065] Figure 10 yes Figure 9 The diagram shows the structure of each plug part of the split plug in the embodiment shown.

[0066] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components.

[0067] Explanation of reference numerals in the attached figures:

[0068] 10 - Socket; 11 - Slot; 12 - First pin;

[0069] 20 - Split plug; 21 - Plug part; 211 - Second pin; 212 - Limiting part;

[0070] 30 - Snap-fit ​​structure; 31 - Buckle; 32 - Slot;

[0071] 40 - Guided mating structure; 41 - Reinforcing rib; 42 - Guided mating part;

[0072] 50 - Positioning and fitting structure; 51 - Lateral covering part; 52 - Support part; 53 - Blocking part; 54 - Stepped part;

[0073] 60-Battery assembly; 61-Battery cell; 62-Busseter; 63-Sampling circuit board; 64-Sampling terminal; 65-Electrical connector; 66-Enclosure; 67-Enclosure cover;

[0074] 70 - Vehicles;

[0075] CA - Cable; dr1 - First direction; dr2 - Second direction; dr3 - Third direction. Detailed Implementation

[0076] The embodiments of the technical solutions disclosed herein will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions disclosed herein and are therefore intended to limit the scope of protection of this disclosure.

[0077] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains; the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings of this disclosure are intended to cover non-exclusive inclusion.

[0078] In the description of the embodiments of this disclosure, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0079] In this disclosure, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this disclosure can be combined with other embodiments.

[0080] In the description of the embodiments of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, if the character " / " appears in this disclosure, it generally indicates that the preceding and following related objects have an "or" relationship.

[0081] In the description of embodiments of this disclosure, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0082] In the description of embodiments of this disclosure, the term "at least one" refers to one or more (including two), similarly, "at least one group" refers to one or more (including two) groups, and "at least one piece" refers to one or more (including two) pieces. In the description of embodiments of this disclosure, the term "at least part" refers to part or all of them.

[0083] Unless otherwise specified, in the description of the embodiments of this disclosure, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0084] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0085] In this embodiment of the disclosure, a battery device refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. A battery cell is the smallest unit constituting a battery. A battery cell includes electrode components capable of undergoing electrochemical reactions. A battery cell can be a rechargeable battery, meaning a battery cell that can be recharged after discharge to activate its active materials and continue to be used.

[0086] The battery cell 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 disclosed herein are not limited to this.

[0087] In some embodiments, the battery device may include a housing and individual battery cells, with the battery cells housed within the housing. The housing may be made of metal, non-metal, or a combination of materials. Multiple battery cells may be arranged along at least one of the length and width directions of the housing. At least one row or column of battery cells may be provided as needed. Alternatively, one or more layers of battery cells may be provided along the height of the battery device, as required.

[0088] The individual battery cells are electrically connected, such as in series, parallel, or a combination thereof, to achieve the desired electrical performance parameters of the battery device. A combination thereof refers to multiple battery cells being connected in both series and parallel configurations. Adjacent battery cells can be electrically connected via busbars. Multiple battery cells can be arranged in rows; one or more rows of battery cells can be installed inside the housing as needed. The housing can be made of metal, non-metal, or a mixture of materials.

[0089] In some embodiments, the battery device may include a housing and battery modules, the housing providing a space for the battery modules, which are installed inside the housing. Multiple battery cells may first be connected in series, parallel, or in a mixed configuration to form a battery module, and then the multiple battery modules may be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing.

[0090] In some embodiments, the battery cell includes an electrode assembly, a housing, and an end cap. The housing has a receiving cavity for receiving the electrode assembly and an open end communicating with the receiving cavity. The end cap closes to the open end.

[0091] The electrode assembly may include a first electrode and a second electrode with opposite polarities, and a separator disposed between the first electrode and the second electrode. In some embodiments, the first electrode is a positive electrode and the second electrode is a negative electrode. In other embodiments, the first electrode is a negative electrode and the second electrode is a positive electrode. During the charging and discharging of a single battery cell, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrode. The separator, disposed between the positive and negative electrode, serves to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0092] In some embodiments, the positive electrode may include a positive current collector substrate and a positive active material layer disposed on at least one surface of the positive current collector substrate.

[0093] As an example, the positive electrode current collector substrate has two surfaces opposite each other in its own thickness direction, and the positive electrode active material layer is disposed on either or both of the two opposite surfaces of the positive electrode current collector substrate.

[0094] As an example, the positive electrode current collector substrate can be a metal foil or a composite current collector. For example, as a metal foil, silver-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium, etc., can be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by applying a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) onto a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0095] As an example, the positive electrode active material layer may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this disclosure is not limited to these materials, and other conventional materials that can be used as positive electrode active material layers in batteries may also be used. These positive electrode active material layers 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 (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium iron manganese phosphate, and lithium iron manganese phosphate and carbon composites. Examples of lithium transition metal oxides include, but are 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, and lithium nickel cobalt manganese oxide (such as LiNi). 1 / 3 Co 1 / 3Mn 1 / 3 O2 (also known as NCM) 333 LiNi 0.5 Co 0.2 Mn 0.3 O2 (also known as NCM) 523 LiNi 0.5 Co 0.25 Mn 0.25 O2 (also known as NCM) 211 LiNi 0.6 Co 0.2 Mn 0.2 O2 (also known as NCM) 622 LiNi 0.8 Co 0.1 Mn 0.1 O2 (also known as NCM) 811 ), lithium nickel cobalt aluminum oxide (such as LiNi) 0.85 Co 0.15 Al 0.05 At least one of O2 and its modified compounds.

[0096] In some embodiments, the negative electrode sheet may include a negative current collector substrate.

[0097] As an example, the negative electrode current collector substrate can be a metal foil, a foamed metal, or a composite current collector. For example, as a metal foil, it can be silver-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium, etc. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. Composite current collectors can include a polymer material base layer and a metal layer. Composite current collectors can be formed by applying a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) onto a polymer material base material (such as a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0098] In some embodiments, the negative electrode sheet may include a negative electrode current collector substrate and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector substrate.

[0099] As an example, the negative electrode current collector substrate has two surfaces opposite each other in its own thickness direction, and the negative electrode active material layer is disposed on either or both of the two opposite surfaces of the negative electrode current collector substrate.

[0100] As an example, the negative electrode active material layer may employ a type of negative electrode active material layer known in the art for use in battery cells. As an example, the negative electrode active material layer 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 disclosure is not limited to these materials, and other conventional materials that can be used as negative electrode active material layers in batteries may also be used. These negative electrode active material layers may be used alone or in combination of two or more.

[0101] In some embodiments, the positive electrode current collector substrate can be made of aluminum, and the negative electrode current collector substrate can be made of copper.

[0102] In some embodiments, the separator is a separator membrane. This disclosure 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.

[0103] 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 separate component located between the positive and negative electrode plates, or it can be located between the positive and negative electrode plates while being attached to the surface of the positive electrode plate and / or the surface of the negative electrode plate.

[0104] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrode plates, serving both to transport ions and to isolate the positive and negative electrodes.

[0105] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This disclosure does not impose specific limitations on the type of electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0106] As an example, liquid electrolytes include electrolyte salts and solvents.

[0107] 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.

[0108] 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.

[0109] As an example, gel electrolytes include a polymer-based backbone network combined with an ionic liquid—a lithium salt.

[0110] As an example, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0111] As an example, polymer solid electrolytes can be polyethers (polyoxyethylene), polysiloxanes, polycarbonates, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, monoionic polymers, polyionic liquids-lithium salts, cellulose, etc.

[0112] As an example, inorganic solid electrolytes can be one or more of the following: oxide solid electrolytes (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON thin film), sulfide solid electrolytes (crystalline lithium superconducting ion conductor (lithium germanium phosphorus sulfide, silver sulfide germanium ore), amorphous sulfides), halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0113] As an example, composite solid electrolytes are formed by adding inorganic solid electrolyte fillers to polymer solid electrolytes.

[0114] The casing is used to encapsulate electrode components and electrolytes. The casing can be made of steel, aluminum, or composite metals (such as a copper-aluminum composite casing). For example, a battery cell can be cylindrical, prismatic, pouch, or other shapes. Prismatic cells include prismatic cells, blade-shaped cells, and multi-prismatic cells, such as hexagonal prismatic cells.

[0115] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0116] In some related technologies, piercing crimp connectors used for battery module signal sampling have multiple layers of pins to match multiple layers of cables, with the pins staggered and arranged in a stepped manner.

[0117] Research has revealed that, when matching cables, the automatic pin insertion tool is limited by its size. When inserting the second row of cables, the tool is prone to interfering with the first row, leading to assembly difficulties or even failure to assemble.

[0118] In view of this, embodiments of the present disclosure provide an electrical connector, a battery device, and an electrical appliance that facilitates assembly and improves production efficiency.

[0119] In one aspect of this disclosure, a battery device is provided, comprising: an electrical connector; wherein the electrical connector includes:

[0120] A socket having multiple slots, each slot having at least one first pin; and

[0121] The split plug includes multiple plug portions for connecting multiple sets of cables respectively. The multiple plug portions are respectively inserted into the multiple slots. Each plug portion has at least one second pin and is electrically connected to at least one first pin in the corresponding slot through the at least one second pin.

[0122] Each plug is configured to be fixedly connected to the end of the cable of the corresponding group, and is electrically connected to the cable of the corresponding group through the at least one second pin.

[0123] In this embodiment, the electrical connector of the battery device includes a split plug, in which each plug portion can be fixedly connected to the end of a corresponding group of cables, and the multiple slots of the socket can be respectively inserted into each plug portion. Compared with the method of assembling multiple rows of cables on the plug in related technologies, the fixed connection between each group of cables and the corresponding plug portion in this embodiment can be carried out independently, without the need to assemble multiple rows of cables in the limited space of the plug itself as in related technologies. Therefore, the operating space is more abundant, making the assembly process more convenient and easier, and thus improving the production efficiency of the battery device using this electrical connector.

[0124] The battery device disclosed herein is applicable to various types of electrical devices that use battery devices. These electrical devices can include mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; and power tools include 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 drills, concrete vibrators, and electric planers. This disclosure does not impose any particular limitation on the aforementioned electrical devices. The battery device can be used to power vehicles and other electrical devices, for example, to provide power for vehicle operation or driving.

[0125] In another aspect of this disclosure, an electrical connector is provided, comprising:

[0126] A socket having multiple slots, each slot having at least one first pin; and

[0127] The split plug includes multiple plug portions for connecting multiple sets of cables respectively. The multiple plug portions are respectively inserted into the multiple slots. Each plug portion has at least one second pin and is electrically connected to at least one first pin in the corresponding slot through the at least one second pin.

[0128] Each plug is configured to be fixedly connected to the end of the cable of the corresponding group, and is electrically connected to the cable of the corresponding group through the at least one second pin.

[0129] In this embodiment, each plug portion of the split-type plug can be fixedly connected to the end of the corresponding group of cables, and the multiple slots of the socket can be used to insert each plug portion. Compared with the method of assembling multiple rows of cables on the plug in related technologies, the fixed connection between each group of cables and the corresponding plug portion in this embodiment can be carried out independently. It does not require assembling multiple rows of cables in the limited space of the plug itself, as in related technologies. Therefore, the operating space is more abundant, making the assembly process more convenient and easier, and thus improving the production efficiency of the device or system using the electrical connector.

[0130] The electrical connectors of this disclosure can be applied to battery devices such as power batteries and energy storage batteries, but are not limited to battery devices. They can also be used in the fields of electronic appliances and mechanical devices.

[0131] Figure 1 This is a schematic diagram illustrating the structure of some embodiments of the electrical equipment according to this disclosure. For convenience, a vehicle is used as an example for explanation. (Reference) Figure 1 The vehicle 70 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles or hybrid vehicles, etc. A battery device 60 can be installed at the bottom, front, or rear of the vehicle 70.

[0132] The battery device 60 can be used to power the vehicle 70. For example, the battery device 60 can serve as the operating power source for the vehicle 70's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 70. The battery device 60 can not only serve as the operating power source for the vehicle 70, but also as the driving power source for the vehicle 70, replacing or partially replacing fuel or natural gas to provide propulsion for the vehicle 70.

[0133] The interior of vehicle 70 may also house axles, wheels, a motor, and a controller. The controller controls the power supply from battery device 60 to the motor. For example, when vehicle 70 uses battery device 60 as its drive power source, battery device 60 replaces or partially replaces fuel or natural gas to provide the motor with the power needed for constant speed and acceleration. The motor drives the axles to rotate, thereby rotating the wheels.

[0134] Figure 2 This is an exploded view of some embodiments of the battery device according to the present disclosure. (See reference) Figure 2 The battery device 60 includes a battery cell 61. In some embodiments, the battery device 60 includes a single battery cell 61. In some embodiments, the battery device 60 may include a plurality of battery cells 61 arranged in at least one direction.

[0135] refer to Figure 2 In some embodiments, the battery device 60 further includes a housing 66 and a cover 67 covering the opening side of the housing 66. The housing 66 and the cover 67 provide housing space for the battery cells 61, and provide functions such as sealing and impact protection, and can also prevent liquids or other foreign objects from adversely affecting the charging, discharging or safety of the battery cells 61.

[0136] The box body 66 and the lid 67 can be of various shapes, such as cuboids or cylinders. The box body 66 can be a hollow structure open on one side, and the lid 67 can also be a hollow structure open on one side. When the open side of the lid 67 covers the open side of the box body 66, an internal receiving space is formed. In some embodiments, the lid 67 is a plate-like structure and covers the open side of the box body 66 to form an internal receiving space.

[0137] For a battery device 60 comprising multiple battery cells 61, the multiple battery cells 61 may be arranged within a housing 66 along at least one of the length and width directions of the housing 66. At least one row of battery cells 61 may be provided as needed. Alternatively, one or more layers of battery cells 61 may be provided along the height direction of the battery device 60, as required.

[0138] Figure 3 This is a schematic diagram of the mounting structure according to some embodiments of the battery device of this disclosure. (See reference) Figure 3 This disclosure provides a battery device 60, including an electrical connector 65. The specific structure of the electrical connector 65 will be further described later and will not be detailed here.

[0139] In some embodiments, the battery device 60 further includes a plurality of battery cells 61, a plurality of busbars 62, a sampling circuit board 63, and a plurality of sampling terminals 64. Each busbar 62 is electrically connected to an adjacent battery cell 61 among the plurality of battery cells 61. The plurality of sampling terminals 64 are electrically connected to the sampling circuit board 63 and to the plurality of busbars 62 respectively. The socket 10 of the electrical connector 65 is fixedly disposed on the sampling circuit board 63.

[0140] Multiple battery cells 61 can be arranged in at least one direction, for example in Figure 3 The battery cells 61 are arranged sequentially along their thickness direction, with the outer casings of adjacent battery cells 61 abutting against each other or connected by a flexible buffer. Each battery cell 61 may include an electrode assembly, an electrolyte, and an outer casing housing the electrode assembly and electrolyte. For details, please refer to the preceding detailed description of the battery cells; further details will not be repeated here.

[0141] In the plurality of busbars 62, each busbar 62 is electrically connected to an adjacent battery cell 61 among the plurality of battery cells 61. For a battery cell, refer to... Figure 3 Each battery cell 61 may have two electrode leads with opposite polarities on its top. The busbar 62 is connected to the electrode leads of each of two adjacent battery cells 61 to achieve series or parallel connection between the two battery cells 61. The busbar 62 is made of conductive material, such as metals or alloys like copper and aluminum, and is electrically connected to the electrode leads of the battery cells 61, for example, by welding.

[0142] Multiple sampling terminals 64 are electrically connected to the sampling circuit board 63 and to the multiple busbars 62 respectively. The electrical connection between the sampling terminals 64 and the busbars 62 can be achieved by means of soldering or the like, and can sample signals such as voltage, current, and temperature on the busbars 62 connected to the sampling terminals 64 according to the designed sampling circuit.

[0143] The sampling circuit board 63 in the battery device 60 can collect signals such as voltage and temperature from each battery cell 61, and send these signals to the main control chip of the battery device 60 to determine the state of charge, health status, and other information of the entire battery device 60. The sampling terminal 64 can be directly or electrically connected to the battery cell 61 through the bus 62 to extract signals such as voltage and temperature from the battery cell 61. It is connected to the sampling lines arranged on the sampling circuit board 63 to achieve effective monitoring of various parameters during the operation of the battery device 60.

[0144] The socket 10 of the electrical connector 65 is fixedly mounted on the sampling circuit board 63, for example, by soldering. The electrical connector 65 can be used to establish an electrical connection with other components within the battery device 60 to transmit at least one of power, control signals, and data signals. For example, the electrical connector 65 can be electrically connected to the battery management system (BMS) via a cable so that the BMS can monitor and control the battery's operating status and perform estimations such as State of Charge (SOC) and State of Health (SOH).

[0145] refer to Figure 2 , Figure 3 The aforementioned components, including multiple battery cells 61, multiple busbars 62, sampling circuit boards 63, multiple sampling terminals 64, and electrical connectors 65, can be installed in... Figure 2 Inside the box 66.

[0146] In this embodiment, the socket 10 of the electrical connector 65 fixedly mounted on the sampling circuit board 63 can be conveniently plugged into the split plug 20, which not only meets the signal sampling requirements but also further improves assembly efficiency.

[0147] Figures 4-6 These are schematic diagrams of the insertion structure from different perspectives of some embodiments of the electrical connectors disclosed herein. Figure 7 yes Figure 6 An exploded view of the embodiment shown. Figure 8 This is a schematic diagram of the structure of a socket according to some embodiments of the electrical connector disclosed herein. Figure 9 This is a schematic diagram of the positioning and mating structure of a split plug according to some embodiments of the electrical connector disclosed herein. Figure 10 yes Figure 9 The diagram shows the structure of each plug part of the split plug in the embodiment shown.

[0148] refer to Figures 4-8 The electrical connector 65 includes a socket 10 and a split plug 20. The socket 10 has a plurality of slots 11, each slot 11 having at least one first pin 12. The split plug 20 includes a plurality of plug portions 21 for connecting a plurality of cables CA respectively. The plurality of plug portions 21 are respectively inserted into the plurality of slots 11. Each plug portion 21 has at least one second pin 211 and is electrically connected to at least one first pin 12 in the corresponding slot 11 through the at least one second pin 211. Each plug portion 21 is configured to be fixedly connected to the end of the corresponding group of cables CA and is electrically connected to the corresponding group of cables CA through the at least one second pin 211.

[0149] The socket 10 can be installed on a fixed or movable structure, depending on the application scenario, such as on components like control boxes or circuit boards. For example, in... Figure 3 In the process, the socket 10 can be fixedly mounted on the sampling circuit board 63 of the battery device 60, wherein each of the first pins 12 on the socket 10 can be soldered onto the sampling circuit board 63.

[0150] The socket 10 may have multiple slots 11. The number of slots can be two or more, for example, two, three, or more than three. Multiple slots 11 can be arranged as follows: Figure 7 and Figure 8 The sockets 11 shown are located on the same side of the socket 10 body, or they can be located on different sides of the socket 10 body. Multiple slots 11 can be arranged in one or more directions, or they can be staggered in one direction.

[0151] In each slot 11 of the socket 10, the first pin 12 is used for electrical connection with the second pin 211 of the plug portion 21, and also for electrical connection with external conductors, such as lines on the sampling circuit board.

[0152] The first pin 12 within slot 11 can be entirely located within slot 11, or it can be as follows: Figure 4 As shown, a portion of the first pin 12 is located inside the slot 11, and another portion extends out of the slot 11 to facilitate electrical connection with other conductive components.

[0153] Each slot 11 may contain one or more first pins 12. For the multiple first pins 12 in the slot 11, the multiple first pins 12 may be arranged in various ways, such as in a single row or multiple rows side by side.

[0154] The multiple plug sections 21 in the split plug 20 can be independently connected to multiple sets of cables CA. The electrical connector 65 can establish an electrical connection with the components connected to the other side of the multiple sets of cables CA.

[0155] Each plug portion 21 may include one or more second pins 211. Each plug portion 21 is electrically connected to at least one first pin 12 in a corresponding slot 11 via the at least one second pin 211. For each set of plug portions and slots, the number of second pins 211 may be the same as the number of first pins 12 to allow for a one-to-one electrical connection. In other embodiments, for each set of plug portions and slots, the number of second pins 211 may not be the same as the number of first pins 12, such that a portion of the second pins 211 correspond to all the first pins 12, or all the second pins 211 correspond to a portion of the first pins 12.

[0156] The cable CA can be set independently of the electrical connector 65 and can be fixedly and electrically connected to the plug part 21 as needed. Each plug part connects to each group of cable CA, and each group of cable CA may include a single cable, multiple cables side by side (i.e., ribbon cables), or multiple cables bundled together (i.e., cable harnesses), etc.

[0157] The cable CA originates from one or more conductors, such as conductive lines on a circuit board, multiple pins of a controller, another connector, etc.

[0158] The end of the cable CA is fixedly connected to the plug portion 21 to ensure a stable electrical connection between the second pin 211 and the cable CA. This electrical connection can be achieved through direct contact between the second pin 211 and the cable CA or via an electrical connector.

[0159] The number of second pins 211 included in the plug portion 21 may be the same as the number of cables CA in the corresponding group, so that the second pins 211 are electrically connected to the cables CA in a one-to-one correspondence. In other embodiments, a portion of the cables CA in the corresponding group of the plug portion 21 is electrically connected to all the second pins 211 in the plug portion 21, or all the cables CA in the corresponding group of the plug portion 21 are electrically connected to a portion of the second pins 211 in the plug portion 21.

[0160] In this embodiment, each plug portion 21 in the split plug 20 can be fixedly connected to the end of the corresponding group of cables CA, and the multiple slots 11 of the socket 10 can be respectively inserted into each plug portion 21. Compared with the method of assembling multiple rows of cables CA on the plug in the related art, the fixed connection between each group of cables CA and the corresponding plug portion 21 in this embodiment can be carried out independently. It is not necessary to assemble multiple rows of cables CA in the limited space of the plug itself as in the related art. Therefore, the operating space is more abundant, making the assembly process more convenient and easier, which in turn helps to improve the production efficiency of the device or system using the electrical connector.

[0161] For each plug portion 21, automated tools such as robotic arms can automatically insert the plug portion 21 with the fixed connection cable CA into the corresponding slot 11, thereby achieving automated assembly of the electrical connector. Since each plug portion 21 can be independently inserted into the corresponding slot 11, automated tools can automatically insert the plug portion 21 with the fixed connection cable CA into the corresponding slot 11 within a relatively ample space, thereby reducing the possibility of operational failure.

[0162] In some embodiments, at least one of the plurality of plug portions 21 is configured to be fixedly and electrically connected to the corresponding group of cables CA by means of a piercing crimping method.

[0163] Each cable CA can be clamped and inserted into the corresponding plug part 21 by an automated clamping tool. The insulation layer of the cable CA is pierced by a piercing blade that is electrically connected to the second pin 211 inside the plug part 21 or is integrally formed to enter the interior of the cable CA, so as to establish an electrical connection between the cable CA and the second pin 211, and press the cable CA onto the plug part 21 to achieve reliable fixation of the cable CA and the plug part 21.

[0164] In this embodiment, the plug part 21 is fixedly connected and electrically connected to the corresponding group of cables CA by a piercing crimping method, which can improve the reliability of the connection and make the assembly more convenient and quick.

[0165] In other embodiments, the plug portion 21 may also be fixedly connected and electrically connected to the corresponding group of cables CA in other ways, such as by welding or screw locking.

[0166] refer to Figures 5-7 In some embodiments, at least one of the plurality of plug portions 21 is configured to be fixedly connected to the end of a plurality of cables CA arranged along a first direction dr1 in a corresponding group, and the plurality of slots 11 are arranged at intervals along a second direction dr2, wherein the first direction dr1 intersects the second direction dr2.

[0167] Each plug portion 21 can be configured to be fixedly connected to the ends of multiple cables CA arranged along the first direction dr1 in the corresponding group, or a portion of the plug portion can be configured to be fixedly connected to the ends of multiple cables CA arranged along the first direction dr1 in the corresponding group, while another portion of the plug portion is fixedly connected to the ends of cables arranged in other ways. In conjunction with multiple slots 11 arranged at intervals along the second direction dr2, the multiple plug portions 21, after insertion, form a multi-layer structure along the second direction dr2.

[0168] In this embodiment, multiple cables CA can be arranged along the first direction dr1 to form a ribbon cable. This makes it easier to design the plug portion 21 to reduce space occupation in other directions intersecting with the first direction dr1, and also facilitates the crimping between it and the plug portion 21. Multiple slots 11 are arranged at intervals along the second direction dr2, which helps to achieve a smaller distance between each slot 11 so that the electrical connector 65 is more compact overall.

[0169] refer to Figures 5-9 In some embodiments, the first direction dr1 is perpendicular to the second direction dr2, and both the first direction dr1 and the second direction dr2 are perpendicular to the entry direction of the plurality of slots 11.

[0170] Figure 6 and Figure 8 The two slots 11 shown are spaced apart along the second direction dr2, and each slot is configured with a flat inner cavity for mating. Figure 7 and Figure 9 A flat plug portion 21 connects to multiple cables CA arranged along the first direction dr1. From Figure 8 and Figure 9 As can be seen, this arrangement of cable CA and slot 11 enables a more compact electrical connector structure.

[0171] In this embodiment, the first direction dr1 of the cable arrangement is perpendicular to the second direction dr2 of the slot arrangement, and both the first direction dr1 and the second direction dr2 are perpendicular to the entry direction of the multiple slots 11, which makes the structure of the electrical connector more compact and reduces space occupation.

[0172] The connection structure between the plug portion 21 and the corresponding slot 11 can be a detachable connection structure to facilitate disconnection and maintenance of the plug portion 21 and the slot 11. In other embodiments, the connection structure can also be a non-detachable connection structure, or a portion of the plug portion 21 and the corresponding slot 11 can be detachable, while another portion of the plug portion 21 and the corresponding slot 11 can be non-detachable.

[0173] For easy disassembly, please refer to Figure 6 In some embodiments, at least one of the plurality of plug portions 21 is provided with a snap-fit ​​structure 30 between it and the corresponding slot 11.

[0174] In this embodiment, the snap-fit ​​structure 30 between the plug portion 21 and the slot 11 can facilitate the quick and easy disassembly and installation of the plug portion 21 relative to the slot 11.

[0175] refer to Figures 7-9 In some embodiments, the snap-fit ​​structure 30 includes a snap-fit ​​31 and a slot 32. The snap-fit ​​31 is disposed on the side wall surface of the plug portion 21 and protrudes relative to the side wall surface of the plug portion 21. The slot 32 is formed on the side wall of the socket 10 for engaging with the snap-fit ​​31.

[0176] exist Figure 8 In the middle, each of the two slots 11 has a slot 32 on its left and right sides, respectively, which is connected to... Figure 7 The two plug portions 21 are engaged by the latches 31 on both sides. The slot 32 can be configured as a through hole or a blind hole. The latches 31 themselves or the location where the latches 31 are set are elastic, and can be deformed under external force to enter into or leave the slot 32.

[0177] The latch 31 may be provided with a bevel to facilitate deformation and retraction of the latch 31 when subjected to pushing force, thereby squeezing it into the slot 32. For the slot 32 with a through hole, the latch 31 can also be designed for one-way entry, meaning that the latch 31 can enter the slot 32 when the plug part 21 is pushed into the slot 11, but when the plug part 21 is subjected to a reverse pulling force, the slot 32 locks the latch 31, preventing the plug part 21 from leaving the slot 11. When it is necessary to remove the plug part 21, the latch 31 can be pushed out of the slot 32 using a tool, thus allowing the plug part 21 to be pulled out.

[0178] In this embodiment, the engagement of the buckle 31 protruding on the side wall surface of the plug 21 with the slot 32 on the side wall of the slot 11 eliminates the need for assembling and disassembling other connectors, making it convenient to lock the plug 21 relative to the slot 11 during the process of inserting the plug 21 into the slot 11, thereby reducing the risk of the plug 21 being accidentally pulled out unintentionally.

[0179] refer to Figures 7-9 In some embodiments, the snap-fit ​​structure 30 includes two sets of snap fasteners 31 and two sets of slots 32 that engage with the two sets of snap fasteners 31 respectively. The two sets of snap fasteners 31 are located on both sides of the plug portion 21 in the first direction dr1. The plurality of slots 11 are arranged at intervals along the second direction dr2, and the first direction dr1 intersects the second direction dr2.

[0180] In this embodiment, by providing two sets of latches 31 on both sides of the first direction dr1 that intersects the arrangement direction of the multiple slots 11, the stability of the locking of the plug part 21 relative to the slot 11 can be effectively achieved, and the possibility of interference of the latching structure 30 to the insertion of adjacent plug parts 21 can be reduced or eliminated.

[0181] refer to Figure 9 In some embodiments, at least one of the plurality of plug portions 21 has a limiting portion 212 for abutting against the socket 10 when the latch 31 is engaged with the slot 32 to limit the maximum insertion depth of the plug portion 21.

[0182] Along the insertion direction of the plug portion 21 relative to the slot 11, the limiting portion 212 may be located downstream of the latch 31. In other words, when the plug portion 21 enters the slot 11, the latch 31 first enters the slot 11 and then enters the slot 32 provided on the side wall of the slot 11. The limiting portion 212 may protrude relative to the side wall surface of the plug portion 21. When the latch 31 and the slot 32 are engaged, it abuts against the structural surface of the socket 10 located outside the slot 11, forming a barrier to further penetration of the plug portion 21.

[0183] In this embodiment, the limiting part 212, in conjunction with the snap-fit ​​structure 30, forms a reliable retaining function of the plug part 21 in the slot 11 in the insertion direction of the plug part 21 relative to the slot 11.

[0184] In some embodiments, reference Figure 6 In some embodiments, a guide engagement structure 40 is provided between each plug portion 21 and the corresponding slot 11, and the outline shape of the guide engagement structure 40 of each group of plug portions 21 and slot 11 is different.

[0185] In this embodiment, the guide mating structure 40 helps the plug portion 21 to enter and be inserted into the corresponding slot 11 more smoothly. By making the contour shape of the guide mating structure 40 of each group of plug portions 21 and slot 11 different, the risk of the plug portion 21 being inserted into the wrong slot 11 can be reduced, thereby improving the effectiveness and reliability of the electrical connection achieved by the electrical connector 65.

[0186] refer to Figures 7-9 In some embodiments, the guide mating structure 40 of each plug portion 21 and slot 11 includes a reinforcing rib 41 and a guide mating portion 42 that guides and mates with the reinforcing rib 41. The reinforcing rib 41 is located on the outer wall of the plug portion 21, and the guide mating portion 42 is located on the inner wall of the slot 11. The reinforcing rib 41 is different in at least one of the following: the location, size, cross-sectional shape, and number of each plug portion 21.

[0187] A reinforcing rib 41 is provided on the outer wall of the plug portion 21, which can strengthen the plug portion 21 and improve the smoothness of the plug portion 21 insertion relative to the slot 11 by forming a guiding engagement with the guide mating portion 42. The reinforcing rib 41 can be in the form of a raised rib protruding from the outer wall surface of the plug portion 21, or it can be in the form of a recessed rib recessed relative to the outer wall surface of the plug portion 21. Depending on the structure of the reinforcing rib 41, the guide mating portion 42 can be correspondingly provided as a protrusion, a groove, or a combination of a protrusion and a groove.

[0188] exist Figure 9 In the middle, the upper plug portion 21 has two sets of reinforcing ribs 41, each set of reinforcing ribs 41 including two adjacent reinforcing ribs in the form of convex ribs. The inner wall of the slot 11 that mates with the plug portion 21 is provided with two sets of guide mating parts 42, each set of guide mating parts 42 being a protrusion that can be embedded into the track formed between two adjacent reinforcing ribs 41. The lower plug portion 21 also has two sets of reinforcing ribs 41, these two sets of reinforcing ribs 41 also including two adjacent reinforcing ribs in the form of convex ribs, but in terms of their position, they are closer to the left and right ends than the two sets of reinforcing ribs 41 of the upper plug portion 21. Correspondingly, the two sets of guide mating parts 42 of the lower slot 11 are also closer to the left and right ends.

[0189] In this way, on the one hand, the assembler can easily observe the position of the reinforcing rib 41 of the plug part 21 and the guide mating part 42 of the slot 11, which facilitates accurate insertion; on the other hand, even if the plug part 21 is inserted into a non-corresponding slot 11, the insertion will not be completed due to the interference formed by the reinforcing rib 41 and the guide mating part 42, which helps to correct the assembler's insertion process.

[0190] To distinguish the guide mating structure 40 of each plug part 21 and slot 11, the reinforcing ribs 41 differ in at least one of the following aspects: their location, size, cross-sectional shape, and number. That is, the reinforcing ribs 41 of each plug part 21 may differ in any aspect of their location, size, cross-sectional shape, and number, or they may differ in two or more or all of these aspects.

[0191] The differences here include: different placement of one or more reinforcing ribs, or some different placement of the ribs; different dimensions, including differences in the width, height, or other dimensions of the reinforcing ribs; different cross-sectional shapes, including different cross-sectional shapes of the reinforcing ribs, such as rectangular, trapezoidal, parallelogram, semi-circular, or semi-elliptical cross-sections; and different quantities, including different numbers of all reinforcing ribs provided on the plug portion 21.

[0192] In this embodiment, by setting at least one different reinforcing rib 41 in terms of position, size, cross-sectional shape and quantity to cooperate with the corresponding guide mating part 42, the foolproof design of the electrical connector is realized, which effectively reduces the possibility of incorrect insertion of the plug part 21 and thus signal malfunction, making the assembly process more convenient and smooth.

[0193] refer to Figure 6 and Figure 7 In some embodiments, each plug portion 21 is configured to be fixedly connected to the end of a plurality of cables CA arranged along a first direction dr1 in a corresponding group. The reinforcing ribs 41 of each plug portion 21 extend along a third direction dr3 and are located at different positions on the first direction dr1. The third direction dr3 is parallel to the entry direction of the plurality of slots 11 and perpendicular to the first direction dr1.

[0194] Multiple cables CA arranged along the first direction dr1 form a ribbon cable. Since the plug portion 21 itself is relatively thin, the reinforcing ribs 41 provided on the plug portion 21 can effectively improve its strength and rigidity. Furthermore, the reinforcing ribs 41 can be positioned at different locations along the first direction dr1 to distinguish between different plug portions 21. The reinforcing ribs 41 extend along a third direction dr3, parallel to the insertion direction of the slot 11, which makes the guiding process of the reinforcing ribs 41 smoother.

[0195] In this embodiment, by providing reinforcing ribs 41 on the connector portion 21 in the form of a ribbon cable, the strength and rigidity of the connector portion 21 itself are improved while achieving the guiding and mating function, which is beneficial to improving the reliability of the electrical connector 65.

[0196] refer to Figure 6In some embodiments, a positioning engagement structure 50 is provided between adjacent plug portions 21 of the plurality of plug portions 21 to achieve positioning engagement between the adjacent plug portions 21 in at least one direction.

[0197] After the plug portion 21 is inserted into the slot 11, it can be positioned by the slot 11. Based on this, the positioning and mating structure 50 can establish a positioning effect between adjacent plug portions 21, improve the stability and reliability of the plug portion 21 relative to the socket 10, and also help reduce the design requirements of the positioning structure on the socket 10.

[0198] In applications where there is significant shaking, such as when used in vehicle batteries, at least one of the cable CA, plug 21, and socket 10 may shake violently, posing a risk of detachment between plug 21 and socket 10. By utilizing the positioning and engagement structure 50 to ensure proper alignment between adjacent plug portions 21, the risk of detachment due to shaking and other factors can be effectively reduced.

[0199] refer to Figure 6 and Figure 7 In some embodiments, the plurality of slots 11 are arranged at intervals along a second direction dr2, and each plug portion 21 is configured to be fixedly connected to the end of a plurality of cables CA arranged along a first direction dr1 in a corresponding group. The positioning and mating structure 50 is used to achieve positioning and mating of the adjacent plug portions 21 in at least one of the first direction dr1, the second direction dr2, and a third direction dr3. The third direction dr3 is parallel to the entry direction of the plurality of slots 11, and both the first direction dr1 and the second direction dr2 are perpendicular to the third direction dr3, and the first direction dr1 and the second direction dr2 are perpendicular to each other.

[0200] exist Figures 5-7 As can be seen, the third direction dr3 is the depth direction of the slot 11, which can be parallel to the entry direction of the plurality of slots 11. The entry direction of each slot 11 can be the same. The first direction dr1 is the arrangement direction of the ribbon cables (multiple cables CA arranged along the first direction dr1) fixedly connected to the plug part 21, or it can be the width direction of the plug part 21. The second direction dr2 is the arrangement direction of the plurality of slots 11, or it can be the thickness direction of the plug part 21.

[0201] In this embodiment, the positioning and mating structure 50 achieves the positioning and mating of adjacent plug portions in at least one of the mutually perpendicular first direction dr1, second direction dr2 and third direction dr3, effectively improving the stability and reliability of the plug portion 21 relative to the socket 10.

[0202] refer to Figure 7 and Figure 9 In some embodiments, the positioning and mating structure 50 includes a lateral covering portion 51, which is disposed on one of the adjacent plug portions 21 and configured to cover both ends of the other plug portion 21 in the first direction dr1, so as to achieve positioning and mating of the adjacent plug portions 21 in the first direction dr1.

[0203] exist Figure 6 , Figure 7 and Figure 9 In the image, it can be seen that the upper plug portion 21 has downwardly extending structures at both ends of the first direction dr1, which can form a lateral covering effect on the lower plug portion 21 at both ends of the first direction dr1, that is, it serves as a lateral covering portion 51 to realize the positioning and cooperation of adjacent plug portions 21 in the first direction dr1.

[0204] In this embodiment, the adjacent plug portions 21 can achieve effective positioning and engagement in the first direction dr1 by the lateral covering portion 51 covering the two ends, making it less likely for the two to shake in the first direction dr1, and even if they shake, the shaking amplitude can be suppressed to reduce the impact on the electrical connection.

[0205] refer to Figure 7 and Figure 10 In some embodiments, the positioning and mating structure 50 includes a support portion 52, which is disposed on one side of the adjacent plug portion 21 adjacent to the other plug portion 21 and is configured to support the other plug portion 21 in the second direction dr2 to achieve positioning and mating of the adjacent plug portions 21 in the second direction dr2.

[0206] for Figure 9 Regarding the two adjacent plug portions 21 shown, due to the influence of gravity, the lower plug portion 21 has a support portion 52 that can support the upper plug portion 21. The support portion 52 may be located at both ends of the lower plug portion 21 in the first direction dr1, or it may be provided in the middle region of the lower plug portion 21 in the first direction dr1. The support portion 52 may be provided as a surface that matches a portion of the bottom surface of the upper plug portion 21, for example, the support portion 52 may be provided as a flat surface that matches a flat portion of the bottom surface.

[0207] In this embodiment, when the plug portion 21 or the cable CA connected to it is subjected to a downward compressive force or impact force, the support portion 52 can distribute the compressive force or impact force to the adjacent plug portions 21, thereby enabling the multiple plug portions 21 to bear the compressive force or impact as a whole, thus improving the reliability of the plug portions 21.

[0208] refer to Figure 7 , Figure 9 and Figure 10 In some embodiments, the positioning and mating structure 50 includes a lateral covering portion 51 and a support portion 52. The lateral covering portion 51 is located at both ends of one of the adjacent plug portions 21 in the first direction dr1. The support portion 52 is located at least partially at both ends of the other plug portion 21 in the first direction dr1 and is located on the side of the other plug portion 21 adjacent to the one plug portion 21 in the second direction dr2. The lateral covering portion 51 is configured to cover both ends of the other plug portion 21 in the first direction dr1 and abut against and support the support portion 52 in the second direction dr2 to achieve positioning and mating of the adjacent plug portions 21 in the first direction dr1 and the second direction dr2.

[0209] exist Figure 7 , Figure 9 and Figure 10 In the middle, the lateral covering part 51 can be constructed into an L-shaped structure, which can achieve both lateral covering and support. Another plug part 21 can abut against the arc-shaped inner corner area of ​​the lateral covering part 51 to form a stable and reliable positioning function.

[0210] In this embodiment, the lateral covering portion 51 and the support portion 52 achieve effective positioning and engagement of adjacent plug portions 21 in the first direction dr1 and the second direction dr2, thereby suppressing the occurrence and amplitude of shaking of adjacent plug portions 21 in the first direction dr1, reducing the impact on the electrical connection. When the plug portion 21 or its connected cable CA is subjected to the squeezing or impact force in the second direction dr2, the squeezing or impact force can be distributed to the adjacent plug portions 21, so that multiple plug portions 21 as a whole can withstand the squeezing or impact, improving the reliability of the plug portions 21.

[0211] refer to Figure 7 In some embodiments, the positioning and mating structure 50 includes a blocking portion 53, which is disposed on one side of the adjacent plug portion 21 adjacent to the other plug portion 21 and is configured to block the other plug portion 21 on the third-direction dr3 to achieve positioning and mating of the adjacent plug portions 21 on the third-direction dr3.

[0212] In this embodiment, when the plug portion 21 or its connected cable CA, which is blocked by the blocking part 53, is subjected to an outward pulling force, the blocking part 53 can distribute the pulling force to adjacent plug portions 21, thereby reducing the risk of the plug portion 21 being accidentally pulled out. Furthermore, the blocking part 53 can also be used to set the insertion / removal order of adjacent plug portions 21, so that the plug portion 21 that is desired to be removed later is blocked by the blocking part 53 and cannot be removed first.

[0213] refer to Figure 7 In some embodiments, the positioning and mating structure 50 includes a blocking portion 53 and a step portion 54. The blocking portion 53 is located on the side of one of the adjacent plug portions 21 adjacent to the other plug portion 21 in the second direction dr2. The step portion 54 is located on the side of the other plug portion 21 adjacent to the one plug portion 21 in the second direction dr2 and has a step inner angle capable of at least partially accommodating the blocking portion 53. The blocking portion 53 is configured to insert the step inner angle to block the step portion 54 in the third direction dr3 and to abut and support the step portion 54 in the second direction dr2, thereby achieving positioning and mating of the adjacent plug portions 21 in the second direction dr2 and the third direction dr3.

[0214] exist Figure 7 In the middle, a downwardly protruding blocking part 53 can be provided on the lower side of the upper plug part 21 to block the lower plug part 21. Correspondingly, a stepped part 54 that mates with the blocking part 53 can be provided on the lower plug part 21, so that the blocking part 53 is inserted into the inner corner of the step of the stepped part 54, forming a blocking effect in the third direction dr3. The stepped part 54 can also abut against the blocking part 53 to form a supporting effect in the second direction dr2.

[0215] In this embodiment, the blocking part 53 and the step part 54 achieve effective positioning and engagement of adjacent plug parts 21 in the second direction dr2 and the third direction dr3. This allows the force to be distributed to adjacent plug parts 21 when the plug part 21 or its connected cable CA is subjected to squeezing or impact forces in the second direction dr2, or outward pulling forces, thereby improving the reliability of the plug parts 21 and reducing the risk of the plug parts 21 being accidentally pulled out. Moreover, the blocking part 53 and the step part 54 can also be used to set the insertion / removal order of adjacent plug parts 21, so that the plug part 21 that is to be pulled out later is blocked by the blocking part and cannot be pulled out first.

[0216] In one aspect of this disclosure, an electrical device is provided, including the aforementioned battery device 60 or electrical connector 65.

[0217] Electrical equipment using the aforementioned battery device 60 or electrical connector 65 is easier to assemble and maintain, and also helps to improve the reliability of power supply.

[0218] In some specific embodiments, such as Figures 3-10 As shown, the battery device 60 includes an electrical connector 65, which comprises a socket 10 and a split plug 20. The socket 10 has a plurality of slots 11, which are spaced apart along a second direction dr2. Each slot 11 has a plurality of first pins 12. The split plug 20 includes a plurality of plug portions 21 for connecting multiple sets of cables CA, which are respectively inserted into the plurality of slots 11 in a one-to-one correspondence.

[0219] Each plug portion 21 has a plurality of second pins 211 arranged along a first direction dr1, and is electrically connected to a plurality of first pins 12 in a corresponding slot 11 via the plurality of second pins 211. Each plug portion 21 is configured to be fixedly connected to the end of a cable CA of a corresponding group, and is electrically connected to the cable CA of the corresponding group via each of the second pins 211. Both the first direction dr1 and the second direction dr2 are perpendicular to the entry direction of the plurality of slots 11.

[0220] At least one of the plurality of plug portions 21 is configured to be fixedly and electrically connected to the corresponding group of cables CA by means of a piercing crimping method.

[0221] Each plug portion 21 is provided with a snap-fit ​​structure 30 between itself and its corresponding slot 11. The snap-fit ​​structure 30 includes a snap-fit ​​31 and a slot 32. The snap-fit ​​31 is disposed on the side wall surface of the plug portion 21 and protrudes relative to the side wall surface of the plug portion 21. The slot 32 is formed on the side wall of the socket 10 for engaging with the snap-fit ​​31. At least one of the plurality of plug portions 21 has a limiting portion 212 for abutting against the socket 10 when the snap-fit ​​31 engages with the slot 32 to limit the maximum insertion depth of the plug portion 21.

[0222] Each plug portion 21 is provided with a guide engagement structure 40 between it and its corresponding slot 11, and the outline shape of the guide engagement structure 40 is different for each group of plug portions 21 and slot 11. Each group of guide engagement structure 40 includes a reinforcing rib 41 and a guide engagement portion 42 that guides and engages with the reinforcing rib 41. The reinforcing rib 41 is located on the outer wall of the plug portion 21, and the guide engagement portion 42 is located on the inner wall of the slot 11. The reinforcing rib 41 is positioned differently on each plug portion 21 along the first direction dr1.

[0223] A positioning and engagement structure 50 is provided between adjacent plug portions 21 among the plurality of plug portions 21 to achieve positioning and engagement between the adjacent plug portions 21 in the first direction dr1, the second direction dr2, and the third direction dr3. The third direction dr3 is parallel to the entry direction of the plurality of slots 11, the first direction dr1 and the second direction dr2 are both perpendicular to the third direction dr3, and the first direction dr1 and the second direction dr2 are perpendicular to each other.

[0224] The positioning and mating structure 50 includes a lateral covering portion 51, which is disposed on one of the adjacent plug portions 21 and configured to cover both ends of the other plug portion 21 in the first direction dr1, so as to realize the positioning and mating of the adjacent plug portions 21 in the first direction dr1.

[0225] The positioning and mating structure 50 includes a support portion 52, which is disposed on one side of the adjacent plug portion 21 adjacent to the other plug portion 21 and is configured to support the other plug portion 21 in the second direction dr2 to achieve positioning and mating of the adjacent plug portions 21 in the second direction dr2.

[0226] The positioning and mating structure 50 includes a blocking part 53, which is disposed on one side of the adjacent plug part 21 adjacent to the other plug part 21 and is configured to block the other plug part 21 on the third-direction dr3 to achieve positioning and mating of the adjacent plug parts 21 on the third-direction dr3.

[0227] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0228] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A battery device (60), comprising: Electrical connector (65); The electrical connector (65) includes: The socket (10) has multiple slots (11), each slot (11) having at least one first pin (12); and The split plug (20) includes multiple plug portions (21) for connecting multiple sets of cables (CA) respectively, the multiple plug portions (21) being inserted into the multiple slots (11) respectively, each plug portion (21) having at least one second pin (211) and being electrically connected to at least one first pin (12) in the corresponding slot (11) through the at least one second pin (211); Each plug portion (21) is configured to be fixedly connected to the end of the cable (CA) of the corresponding group, and is electrically connected to the cable (CA) of the corresponding group via the at least one second pin (211).

2. The battery device (60) according to claim 1, wherein, At least one of the plurality of plug portions (21) is configured to be fixedly and electrically connected to the corresponding group of cables (CA) by means of a piercing crimp.

3. The battery device (60) according to claim 1 or 2, wherein, At least one of the plurality of plug portions (21) is configured to be fixedly connected to the end of a plurality of cables (CA) arranged along a first direction (dr1) in a corresponding group, and the plurality of slots (11) are arranged at intervals along a second direction (dr2), the first direction (dr1) intersecting the second direction (dr2).

4. The battery device (60) according to claim 3, wherein, The first direction (dr1) is perpendicular to the second direction (dr2), and both the first direction (dr1) and the second direction (dr2) are perpendicular to the entry direction of the plurality of slots (11).

5. The battery device (60) according to any one of claims 1-4, wherein, At least one of the plurality of plug portions (21) is provided with a snap-fit ​​structure (30) between it and the corresponding slot (11).

6. The battery device (60) according to claim 5, wherein, The snap-fit ​​structure (30) includes: A snap-fit ​​(31) is provided on the side wall surface of the plug portion (21) and protrudes relative to the side wall surface of the plug portion (21); and The slot (32) is formed on the side wall of the corresponding slot (11) for engaging with the buckle (31).

7. The battery device (60) according to claim 6, wherein, The snap-fit ​​structure (30) includes two sets of snaps (31) and two sets of slots (32) that engage with the two sets of snaps (31) respectively. The two sets of snaps (31) are located on both sides of the plug portion (21) in the first direction (dr1). The plurality of slots (11) are arranged at intervals along the second direction (dr2), and the first direction (dr1) and the second direction (dr2) intersect.

8. The battery device (60) according to claim 6 or 7, wherein, At least one of the plurality of plug portions (21) has a limiting portion (212) for abutting against the socket (10) when the latch (31) is engaged with the slot (32) to limit the maximum insertion depth of the plug portion (21).

9. The battery device (60) according to any one of claims 1-8, wherein, Each plug part (21) is provided with a guide mating structure (40) between it and the corresponding slot (11), and the outline shape of the guide mating structure (40) of each plug part (21) and slot (11) is different.

10. The battery device (60) according to claim 9, wherein, The guide mating structure (40) of each plug part (21) and slot (11) includes a reinforcing rib (41) and a guide mating part (42) that guides and mates with the reinforcing rib (41). The reinforcing rib (41) is located on the outer wall of the plug part (21), and the guide mating part (42) is located on the inner wall of the slot (11). The reinforcing rib (41) is different in at least one of the following: its setting position, size, cross-sectional shape and number in each plug part (21).

11. The battery device (60) according to claim 10, wherein, Each plug portion (21) is configured to be fixedly connected to the end of a plurality of cables (CA) arranged along a first direction (dr1) in the corresponding group. The reinforcing ribs (41) of each plug portion (21) extend along a third direction (dr3) and are located at different positions in the first direction (dr1). The third direction (dr3) is parallel to the entry direction of the plurality of slots (11) and perpendicular to the first direction (dr1).

12. The battery device (60) according to any one of claims 1-11, wherein, A positioning and mating structure (50) is provided between adjacent plug portions (21) of the plurality of plug portions (21) to achieve positioning and mating between the adjacent plug portions (21) in at least one direction.

13. The battery device (60) according to claim 12, wherein, The plurality of slots (11) are arranged at intervals along the second direction (dr2), and each plug portion (21) is configured to be fixedly connected to the end of a plurality of cables (CA) arranged along the first direction (dr1) in the corresponding group. The positioning and mating structure (50) is used to realize the positioning and mating of the adjacent plug portions (21) in at least one of the first direction (dr1), the second direction (dr2) and the third direction (dr3). Wherein, the third direction (dr3) is parallel to the entry direction of the plurality of slots (11), the first direction (dr1) and the second direction (dr2) are both perpendicular to the third direction (dr3), and the first direction (dr1) and the second direction (dr2) are perpendicular to each other.

14. The battery device (60) according to claim 13, wherein, The positioning and mating structure (50) includes a lateral covering portion (51), which is disposed on one of the adjacent plug portions (21) and configured to cover the two ends of the other plug portion (21) in the first direction (dr1) to achieve positioning and mating of the adjacent plug portions (21) in the first direction (dr1).

15. The battery device (60) according to claim 13 or 14, wherein, The positioning and mating structure (50) includes a support portion (52) disposed on one side of the adjacent plug portion (21) adjacent to the other plug portion (21) and configured to support the other plug portion (21) in the second direction (dr2) to achieve positioning and mating of the adjacent plug portions (21) in the second direction (dr2).

16. The battery device (60) according to any one of claims 13-15, wherein, The positioning and mating structure (50) includes a blocking part (53), which is disposed on one side of the adjacent plug part (21) adjacent to the other plug part (21) and is configured to block the other plug part (21) in the third direction (dr3) to achieve positioning and mating of the adjacent plug part (21) in the third direction (dr3).

17. The battery device (60) according to claim 13, wherein, The positioning and mating structure (50) includes: a lateral covering part (51) and a support part (52). The lateral covering part (51) is located at both ends of one of the adjacent plug parts (21) in the first direction (dr1). The support part (52) is located at least partially at both ends of the other plug part (21) in the first direction (dr1) and is located on the side of the other plug part (21) adjacent to the one plug part (21) in the second direction (dr2). The lateral covering portion (51) is configured to cover both ends of the other plug portion (21) in the first direction (dr1) and abut against and support the support portion (52) in the second direction (dr2) to achieve positioning and engagement of the adjacent plug portions (21) in the first direction (dr1) and the second direction (dr2).

18. The battery device (60) according to claim 13 or 17, wherein, The positioning and mating structure (50) includes a blocking portion (53) and a step portion (54). The blocking portion (53) is located on one side of the adjacent plug portion (21) adjacent to the other plug portion (21) in the second direction (dr2). The step portion (54) is located on the other plug portion (21) adjacent to the one plug portion (21) in the second direction (dr2) and has a step inner angle that can at least partially accommodate the blocking portion (53). The blocking part (53) is configured to be inserted into the inner corner of the step to block the step part (54) in the third direction (dr3) and to abut and support the step part (54) in the second direction (dr2) to achieve positioning and engagement of the adjacent plug part (21) in the second direction (dr2) and the third direction (dr3).

19. The battery device (60) according to any one of claims 1-18, further comprising: Multiple battery cells (61); Multiple busbars (62), each busbar (62) being electrically connected to an adjacent battery cell (61) among the multiple battery cells (61); Sampling circuit board (63); and Multiple sampling terminals (64) are electrically connected to the sampling circuit board (63) and to the multiple busbars (62) respectively; The socket (10) of the electrical connector (65) is fixedly mounted on the sampling circuit board (63).

20. An electrical connector (65), comprising: The socket (10) has multiple slots (11), each slot (11) having at least one first pin (12). and The split plug (20) includes multiple plug portions (21) for connecting multiple sets of cables (CA) respectively, the multiple plug portions (21) being inserted into the multiple slots (11) respectively, each plug portion (21) having at least one second pin (211) and being electrically connected to at least one first pin (12) in the corresponding slot (11) through the at least one second pin (211); Each plug portion (21) is configured to be fixedly connected to the end of the cable (CA) of the corresponding group, and is electrically connected to the cable (CA) of the corresponding group via the at least one second pin (211).

21. An electrical appliance, comprising: The battery device (60) according to any one of claims 1-19 or the electrical connector (65) according to claim 20.

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