Battery apparatus and electrical apparatus

Abstract

The present application belongs to the technical field of batteries. Disclosed are a battery apparatus and an electrical apparatus. The battery apparatus comprises a battery cell, a sampling unit, at least one flat cable and a first connector. The sampling unit is used for collecting information of the battery cell. The flat cable comprises an insulating member and a plurality of core wires, the insulating member wrapping around the plurality of core wires, and one end of each core wire being connected to the sampling unit. The first connector comprises at least one row of contact terminals; each row of contact terminals comprises a plurality of contact terminals spaced apart in a first direction; each contact terminal comprises a first piercing claw and a second piercing claw, the first piercing claw and the second piercing claw being respectively arranged on two sides of the contact terminal in the first direction; the first piercing claws and the second piercing claws pierce the insulating member and clamp the core wires. The battery apparatus enables high production efficiency.

Description

Battery devices and electrical appliances

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application 202510115635.4, filed on January 24, 2025, entitled “Battery Device and Power Consumption Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, specifically to a battery device and an electrical device. Background Technology

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0005] Improving the production efficiency of battery devices is a pressing issue in battery technology. Summary of the Invention

[0006] In view of the above problems, this application provides a battery device and an electrical device that can improve the production efficiency of the battery device.

[0007] In a first aspect, this application provides a battery device, which includes a battery cell, a sampling unit, at least one ribbon cable, and a first connector. The sampling unit is used to collect information from the battery cell. The ribbon cable includes an insulating member and multiple core wires, the insulating member covering the multiple core wires, and one end of each core wire being connected to the sampling unit. The first connector includes at least one row of contact terminals, each row of contact terminals including multiple contact terminals spaced apart along a first direction. Each contact terminal includes a first claw and a second claw, the first claw and the second claw being respectively disposed on both sides of the contact terminal in the first direction, the first claw and the second claw piercing the insulating member and clamping the core wires.

[0008] In the technical solution of this application embodiment, compared with flexible circuit boards, the core wire is directly connected to the sampling unit to collect information from individual battery cells, eliminating the need for complex electrical connection circuits and reducing the design cost of the battery device. Furthermore, since each core wire can be adaptively bent to complete assembly according to the connection points of different sampling units, it helps improve the assembly efficiency and production efficiency of the battery device.

[0009] Furthermore, by using the first and second barbs to pierce the insulation and clamp the core wire to achieve electrical connection between the contact terminal and the cable, the process steps of opening windows in the insulation and secondary riveting of the barbs can be eliminated, which significantly improves the production efficiency of the battery device.

[0010] In one or more embodiments of the first aspect, a plurality of first pawls are provided, and the plurality of first pawls are spaced apart along a second direction, the second direction intersecting the first direction.

[0011] In the above scheme, the connection stability between the contact terminal and the core wire can be improved by using multiple first and second barbs to clamp the core wire.

[0012] In one or more embodiments of the first aspect, a plurality of second pawls are provided, and the plurality of second pawls are spaced apart along a second direction, the second direction intersecting the first direction.

[0013] In the above scheme, the connection stability between the contact terminal and the core wire can be further improved by clamping the core wire with multiple first claws and multiple second claws.

[0014] In one or more embodiments of the first aspect, the orthographic projections of the first pawl and the second pawl are alternately arranged along the second direction in the same projection plane perpendicular to the first direction.

[0015] In the above scheme, since the orthographic projections of the first and second pawls are alternately arranged along the second direction in the same projection plane perpendicular to the first direction, the area in which the same number of first and second pawls provide clamping force to the core wire is larger, which is beneficial to improving the connection stability between the contact terminal and the core wire.

[0016] In one or more embodiments of the first aspect, the orthographic projections of the first pawl and the second pawl do not overlap in the same projection plane perpendicular to the first direction.

[0017] In the above scheme, since the orthographic projections of the first and second pawls do not overlap in the same projection plane perpendicular to the first direction, the creepage distance between adjacent contact terminals is large, and the risk of electrical breakdown leading to electrical connection failure and fire is low.

[0018] In one or more embodiments of the first aspect, the first pawl has a first side facing the core wire, and the second pawl has a second side facing the core wire, both the first and second sides being planar; and / or, the first pawl has a third side facing away from the core wire and the second pawl has a fourth side facing away from the core wire, both the third and fourth sides being planar.

[0019] In the above scheme, since the first and second sides are both planar, and / or the third and fourth sides are both planar, the design cost of the first and second spikes is relatively low, and the risk of stress concentration when the first and second spikes are under force is also relatively low, and the connection stability between the contact terminal and the core wire is high.

[0020] In one or more embodiments of the first aspect, the contact terminal further includes a base plate, and a first claw and a second claw are respectively disposed on both sides of the base plate in a first direction. The first claw has a first root portion connected to the base plate and a first end portion away from the base plate, and the second claw has a second root portion connected to the base plate and a second end portion away from the base plate. Along the first direction, the distance between the first root portion and the second root portion is less than the distance between the first end portion and the second end portion.

[0021] In the above scheme, since the distance between the first root and the second root is smaller than the distance between the first end and the second end along the first direction, the first barb and the second barb are more likely to pierce the insulating component and clamp the core material between them, which reduces the assembly difficulty of the contact terminal and the ribbon cable and helps to improve the production efficiency of the battery device.

[0022] In one or more embodiments of the first aspect, the distance between two adjacent contact terminals along the first direction is H, which satisfies: 1mm≤H≤1.5mm.

[0023] In the above scheme, when H≥1mm, the spacing between two adjacent contact terminals is larger along the first direction, the risk of short circuit inside the first connector is lower, and the reliability of the connector is higher; when H≤1.5mm, the spacing between two adjacent contact terminals is smaller along the first direction, the space occupied by the same number of contact terminals is smaller, which is conducive to reducing the overall size of the first connector and thus improving the energy density of the battery device; therefore, when 1mm≤H≤1.5mm, the energy density of the battery device can be improved while ensuring the high reliability of the first connector.

[0024] In one or more embodiments of the first aspect, 1.2mm ≤ H ≤ 1.5mm.

[0025] In the above scheme, when H≥1.2mm, the spacing between two adjacent contact terminals is larger along the first direction, the risk of short circuit inside the first connector is lower, and the reliability of the connector can be further improved; when H≤1.5mm, the spacing between two adjacent contact terminals is smaller along the first direction, the space occupied by the same number of contact terminals is smaller, which is conducive to reducing the overall size of the first connector and thus improving the energy density of the battery device; therefore, when 1mm≤H≤1.5mm, the energy density of the battery device can be improved while ensuring the high reliability of the first connector.

[0026] In one or more embodiments of the first aspect, the first connector further includes a first housing and a plurality of second housings, all of which are housed within the first housing, and each second housing is provided with a row of contact terminals.

[0027] In the above solution, the modular splicing of the first and second housings of the first connector makes it suitable for different battery devices, which is beneficial for integrated production on automated production lines. It also facilitates automated assembly, improving production efficiency. Furthermore, it simplifies the maintenance of specific contact terminals, reducing maintenance costs.

[0028] In one or more embodiments of the first aspect, the first housing has a plurality of first receiving cavities spaced apart along a third direction, each first receiving cavity being used to receive a second housing, the third direction intersecting the first direction.

[0029] In the above scheme, the first receiving cavity can serve as the assembly reference for the second housing, simplifying the assembly process and facilitating the automated production of the first connector.

[0030] In one or more embodiments of the first aspect, the first receiving cavity has a first opening on one side in the first direction, the first receiving cavity has a second opening on one side in the second direction, the second housing is inserted into the first receiving cavity through the first opening, and the ribbon cable is perpendicular to the first receiving cavity through the second opening, the second direction, the first direction and the third direction are perpendicular to each other.

[0031] In the above solution, since the assembly direction of the second housing is different from that of the ribbon cable, on the one hand, the assembly difficulty of the second housing is reduced, and on the other hand, the risk of excessive assembly stress between the contact terminal and the ribbon cable during the assembly process, which may lead to connection failure between the ribbon cable and the contact terminal, is reduced.

[0032] In one or more embodiments of the first aspect, the second housing is provided with a limiting groove extending along a first direction. A protrusion is provided on the inner surface of the first receiving cavity, and the protrusion engages with the limiting groove to restrict movement of the second housing relative to the first housing along a second direction.

[0033] In the above scheme, the protrusion can guide the second housing and improve the assembly accuracy between the second housing and the first housing. On the other hand, it can also improve the structural stability after the second housing is assembled into the first housing, thereby reducing the risk of connection failure between the contact terminal and the ribbon cable.

[0034] In one or more embodiments of the first aspect, the battery device further includes a second connector, which in turn includes a connection terminal. The contact terminal includes a first connecting portion, a stop portion, and a second connecting portion. The first connecting portion connects to the connection terminal, and the second connecting portion includes a first pawl and a second pawl. The protrusion abuts against the stop portion to prevent the contact terminal from disengaging from the second housing in a second direction.

[0035] In the above scheme, after the second housing is assembled into the first housing, the setting of the protrusion can also improve the structural stability of the contact terminal after assembly, so as to reduce the risk of electrical connection failure caused by excessive displacement of the contact terminal.

[0036] In one or more embodiments of the first aspect, the first connecting portion includes a first spring and a second spring, the first spring and the second spring are disposed opposite to each other along a third direction, and along a second direction, one end of the first spring and one end of the second spring are both connected to the anti-retraction portion, and the other end of the first spring and the other end of the second spring are both free ends.

[0037] In the above solution, since both ends of the first and second springs are free ends, and both ends of the first and second springs are connected to the retaining portion, the retaining portion can be used as a connecting base for the first and second springs, eliminating the need for additional connecting bases. This ensures a stable connection with the connecting terminal while reducing the overall weight and size of the contact terminal, thereby improving the energy density of the battery device. Simultaneously, it simplifies the design of the first connecting portion and reduces the amount of material used, thus lowering production costs.

[0038] In one or more embodiments of the first aspect, the anti-retraction part includes a first latch, and the second housing is provided with a locking hole. The first latch engages with the locking hole to restrict the contact terminal from disengaging from the second housing in the second direction.

[0039] In the above scheme, after the contact terminal is assembled into the second housing, the setting of the first snap-fit ​​can improve the structural stability of the contact terminal.

[0040] In one or more embodiments of the first aspect, the interior of the second housing is provided with a plurality of partition walls arranged at intervals along a first direction, the plurality of partition walls dividing the interior space of the second housing into a plurality of second receiving cavities, each second receiving cavity for accommodating a contact terminal. The partition walls are provided with channels connecting two adjacent second receiving cavities, and a portion of the insulating member is located within the channel.

[0041] In the above solution, the channel can limit the position of the insulating component located within the second housing, maintaining the stability of the insulating component's shape and reducing the wind direction of insulation failure. Furthermore, the channel can guide the insulating component during assembly into the second housing along with the contact terminals, improving assembly accuracy and reducing assembly difficulty.

[0042] In one or more embodiments of the first aspect, the cross-sectional area of ​​the core wire is S, satisfying: 0.08 mm². 2 ≤S≤0.13mm 2 .

[0043] In the above scheme, when S≥0.08mm 2 When the cross-sectional area of ​​the core wire is large, the core wire can carry a larger current, and the core wire has higher transmission efficiency and stability; when S≤0.13mm 2The core wire has a small cross-sectional area, and the use of small contact terminals can ensure stable clamping of the core wire, which helps to reduce the size of the first connector and thus improve the energy density of the battery device.

[0044] In one or more embodiments of the first aspect, the hardness of the first barb is greater than the hardness of the core wire, and the hardness of the second barb is greater than the hardness of the core wire.

[0045] In the above scheme, since the hardness of the first and second barbs is greater than that of the core wire, the risk of excessive deformation of the first and second barbs during the process of piercing the connection with the ribbon cable is low, which is conducive to maintaining a stable and reliable connection between the contact terminal and the ribbon cable.

[0046] In one or more embodiments of the first aspect, the battery device further includes a second connector, which in turn includes a connection terminal. The first connector further includes a second housing, and a contact terminal is disposed within the second housing. The contact terminal includes a first connecting portion, a retaining portion, and a second connecting portion arranged sequentially along a second direction. The first connecting portion connects to the connection terminal, the second connecting portion includes a first pawl and a second pawl, and the retaining portion includes a fourth housing. The fourth housing abuts against the second housing to prevent the contact terminal from disengaging from the second housing along the second direction, which intersects with the first direction. The first connecting portion is disposed by the fourth housing on a side of the second housing facing away from the second connecting portion in the second direction.

[0047] In the above scheme, since the first connecting part is separated from the second connecting part by the fourth housing in the second direction, the first connecting part does not need to be fixed by an additional wall. In other words, the first connecting part can save some walls, which is beneficial to reduce the weight and size of the contact terminals, thereby improving the energy density of the battery device.

[0048] In one or more embodiments of the first aspect, along a third direction, the maximum size of the fourth housing is greater than the maximum size of the first connection portion, and the third direction, the second direction, and the first direction are perpendicular to each other.

[0049] In the above scheme, under the premise of satisfying the anti-retraction requirement of the anti-retraction part and the connection stability between the first connecting part and the connecting terminal, since the maximum size of the fourth housing is greater than the maximum size of the first connecting part along the third direction, the overall size of the contact terminal along the third direction can be designed to be relatively small, which is beneficial to reduce the size of the first connector and improve the energy density of the battery device.

[0050] Secondly, this application provides an electrical device that includes the battery device described in one or more of the above embodiments, the battery device being used to provide electrical energy.

[0051] In the above scheme, since the battery device in one or more of the above embodiments has high production efficiency, the power-consuming device including the battery device in one or more of the above embodiments also has high production efficiency.

[0052] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0053] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0054] Figure 1 is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0055] Figure 2 is an exploded view of a battery device according to some embodiments of this application;

[0056] Figure 3 is an exploded view of a battery cell according to some embodiments of this application;

[0057] Figure 4 is a schematic diagram of a portion of the structure of a battery device according to some embodiments of this application;

[0058] Figure 5 is an exploded view of a portion of the structure of a battery device according to some embodiments of this application;

[0059] Figure 6 is an exploded view of a portion of the structure of a battery device according to some embodiments of this application;

[0060] Figure 7 is an isometric view of the contact terminals of some embodiments of this application;

[0061] Figure 8 is a schematic diagram of the contact terminals of some embodiments of this application;

[0062] Figure 9 is a cross-sectional view at point AA in Figure 8.

[0063] The reference numerals in the detailed embodiments are as follows:

[0064] 1000 - Vehicle; 200 - Controller; 300 - Motor; 100 - Battery Unit; 11 - Housing; 111 - First Housing; 112 - Second Housing; 12 - Battery Cell; 121 - Casing; 1211 - End Cap; 1212 - Housing; 122 - Electrode Assembly; 123 - Electrode Terminal; 124 - Adapter; 13 - Sampling Unit; 14 - Cable; 141 - Insulator; 1411 - Connecting Section; 1412 - Covering Section; 14 2-Core wire; 15-First connector; 151-Contact terminal; 1511-First barb; 15111-First side; 15112-First root; 15113-First end; 15114-Third side; 1512-Second barb; 15121-Second side; 15122-Second root; 15123-Second end; 15124-Fourth side; 1513-Base plate; 1514-First connecting part; 1515-Stop Retractor; 15151-First buckle; 15152-First sidewall; 15153-Second sidewall; 15154-First top wall; 15155-Second top wall; 1516-Second connecting part; 15141-First spring clip; 15142-Second spring clip; 1517-Third connecting part; 1518-Fourth connecting part; 1519-First notch; 1520-Second notch; 1521-Third notch; 1522-Fourth notch; 15 2-First housing; 1523-Protrusion; 1524-Second buckle; 153-Second housing; 1531-Limiting groove; 1532-Holding hole; 1533-Separating wall; 1534-Second receiving cavity; 1535-Channel; 154-First opening; 155-Second opening; 16-Battery management unit; 161-Second connector; 1611-Third housing; 1612-Holding block; X-First direction; Y-Second direction; Z-Third direction. Embodiments of the present invention

[0065] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0067] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0068] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0069] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0070] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0071] Battery cells include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc.

[0072] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, reduces the risk of short circuits while allowing active ions to pass through.

[0073] In some embodiments, the separator is a separator membrane. The separator membrane can be any known porous structure separator membrane with good chemical and mechanical stability.

[0074] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0075] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel-like, or solid. Liquid electrolytes include electrolyte salts and solvents.

[0076] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0077] In some implementations, the electrode assembly is a stacked structure.

[0078] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0079] In some embodiments, the electrode assembly is provided with tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0080] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0081] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells.

[0082] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity.

[0083] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0084] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0085] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0086] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0087] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0088] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0089] In some embodiments, the battery can be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0090] The development of battery technology must take into account multiple design factors, such as reliability, cycle life, discharge capacity, charge / discharge rate, energy density and other performance parameters. In addition, the production efficiency of battery devices also needs to be considered.

[0091] Typical battery devices incorporate connectors, which bridge gaps in circuitry or connect isolated circuits, allowing current to flow and enabling the circuit to perform its intended function. For example, connectors and wires form an electrical connection between the battery management unit and the sampling unit. Often, flexible circuit boards replace wires in battery devices. Connecting the connector to the flexible circuit board requires pre-exposing the internal circuitry through openings in the board before the connector's contacts make contact with the circuitry to form the electrical connection. Furthermore, because the conductive layer of the flexible circuit board is thin, a riveting process is typically used to plastically deform a portion of the contact terminal and press it against the conductive layer along the thickness of the flexible circuit board to maintain a stable connection. In some battery devices, welding is further used after riveting to enhance the connection stability between the contact terminal and the conductive layer. The assembly and production efficiency of these battery devices is relatively low.

[0092] In view of this, this application provides a battery device, which includes a battery cell, a sampling unit, at least one ribbon cable, and a first connector. The sampling unit is used to collect information from the battery cell. The ribbon cable includes an insulating member and multiple core wires. The insulating member covers the multiple core wires, and one end of each core wire is connected to the sampling unit. The first connector includes at least one row of contact terminals. Each row of contact terminals includes multiple contact terminals spaced apart along a first direction. Each contact terminal includes a first claw and a second claw, which are respectively disposed on both sides of the contact terminal in the first direction. The first claw and the second claw pierce the insulating member and clamp the core wires. Compared with flexible circuit boards, using core wires directly connected to the sampling unit to collect information from the battery cell eliminates the need for complex electrical connection circuits, resulting in lower design costs for the battery device. Furthermore, since each core wire can be flexibly bent to complete assembly according to the connection points of different sampling units, it is beneficial to improve the assembly efficiency and production efficiency of the battery device. In addition, by using the first claw and the second claw to pierce the insulating member and clamp the core wires to achieve electrical connection between the contact terminals and the ribbon cable, the process steps of opening windows in the insulating member and secondary riveting of the claws can be eliminated, significantly improving the production efficiency of the battery device.

[0093] The technical solutions described in the embodiments of this application are applicable to battery cells, battery devices, and electrical devices using battery devices.

[0094] Electrical devices include, but are not limited to: electric vehicles, electric cars, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0095] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0096] For example, Figure 1 is a structural schematic diagram of a vehicle 1000 according to some embodiments of this application. The vehicle 1000 can be a fuel-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle 1000 may have a motor 300, a controller 200, and a battery device 100 installed inside. The controller 200 controls the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be installed at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can serve as the operating power source for the vehicle 1000's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 1000. In another embodiment of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000 but also as the driving power source, replacing or partially replacing fuel or natural gas to provide driving power to the vehicle 1000.

[0097] To meet different power demands, the battery device 100 may include multiple battery cells 12, which can be connected in series, parallel, or a combination thereof. The battery device 100 may also be referred to as a battery pack. Optionally, the multiple battery cells 12 can first be connected in series, parallel, or a combination thereof to form a battery cell assembly, and then the battery cell assemblies can be connected in series, parallel, or a combination thereof to form the battery device 100. In other words, the multiple battery cells 12 can directly form the battery device 100, or they can first be assembled into battery cell assemblies, and then the battery cell assemblies can be assembled into the battery device 100.

[0098] For example, please refer to Figure 2, which is an exploded view of a battery device 100 according to some embodiments of this application. The battery device 100 may include a plurality of battery cells 12. The battery device 100 may also include a housing 11, which has a hollow internal structure, and the plurality of battery cells 12 are housed within the housing 11. As shown in Figure 2, these are referred to here as a first housing 111 and a second housing 112, which are fastened together. The shapes of the first housing 111 and the second housing 112 can be determined according to the shape of the combination of the plurality of battery cells 12. Both the first housing 111 and the second housing 112 may have an open surface. For example, both the first housing 111 and the second housing 112 may be hollow cuboids with only one open surface each. The open surfaces of the first housing 111 and the second housing 112 are arranged opposite to each other, and the first housing 111 and the second housing 112 are fastened together to form a housing 11 with a closed cavity. Multiple battery cells 12 are connected in parallel, series, or mixed and placed inside the housing 11 formed by the first housing 111 and the second housing 112 being fastened together.

[0099] Optionally, the battery device 100 may also include other structures, which will not be described in detail here. For example, the battery device 100 may also include a busbar component for realizing electrical connection between multiple battery cells 12, such as in parallel, series, or mixed connection. Specifically, the busbar component can realize electrical connection between battery cells 12 by connecting the electrode terminals 123 of the battery cells 12. Further, the busbar component can be fixed to the electrode terminals 123 of the battery cells 12 by welding. The electrical energy of the multiple battery cells 12 can be further led out through the housing 11 via a conductive mechanism.

[0100] The number of battery cells 12 can be set to any value depending on different power requirements. Multiple battery cells 12 can be connected in series, parallel, or mixed connection to achieve a larger capacity or power. Since each battery device 100 may include a large number of battery cells 12, for ease of installation, the battery cells 12 can be grouped, with each group of battery cells 12 forming a battery cell assembly. The number of battery cells 12 included in a battery cell assembly is unlimited and can be set according to requirements. The battery device 100 may include multiple battery cell assemblies, which can be connected in series, parallel, or mixed connection.

[0101] Please refer to Figure 3, which is an exploded view of a battery cell 12 according to some embodiments of this application. The battery cell 12 includes one or more electrode assemblies 122 and a housing 121. The housing 121 may include a shell 1212, and multiple walls of the shell 1212 form a cavity that can be used to accommodate the electrode assemblies 122. The shape of the shell 1212 depends on the combined shape of the one or more electrode assemblies 122. For example, the shell 1212 may be a hollow cuboid, cube, or regular polyhedron, and one face of the shell 1212 has an opening so that one or more electrode assemblies 122 can be placed inside the shell 1212. The shell 1212 is filled with an electrolyte, such as an electrolyte solution.

[0102] The battery cell 12 may also include two electrode terminals 123, which can be disposed on an end cap 1211. The end cap 1211 is typically flat, and the two electrode terminals 123 are fixed to the flat surface of the end cap 1211. The two electrode terminals 123 are respectively a positive electrode terminal 123 and a negative electrode terminal 123. Each electrode terminal 123 is provided with a corresponding adapter 124, which is located between the end cap 1211 and the electrode assembly 122, for electrically connecting the electrode assembly 122 and the electrode terminal 123. In this battery cell 12, depending on actual usage requirements, the electrode assembly 122 can be configured as a single unit or multiple units, and multiple independent electrode assemblies 122 are disposed within the battery cell 12.

[0103] According to some embodiments of this application, referring to Figures 4-9, the battery device 100 includes a battery cell 12, a sampling unit 13, at least one ribbon cable 14, and a first connector 15. The sampling unit 13 is used to collect information from the battery cell 12. The ribbon cable 14 includes an insulating member 141 and a plurality of core wires 142. The insulating member 141 covers the plurality of core wires 142, and one end of the core wires 142 is connected to the sampling unit 13. The first connector 15 includes at least one row of contact terminals 151. Each row of contact terminals 151 includes a plurality of contact terminals 151 spaced apart along a first direction X. The contact terminals 151 include a first claw 1511 and a second claw 1512. The first claw 1511 and the second claw 1512 are respectively disposed on both sides of the contact terminal 151 in the first direction X. The first claw 1511 and the second claw 1512 pierce the insulating member 141 and clamp the core wires 142.

[0104] The sampling unit 13 may include a temperature sampling unit 13 and a voltage sampling unit 13, etc. For example, a thermistor, a nickel strip for voltage sampling, etc. The core wire 142 can be connected to the electrode terminal 123, or to the bus component, or to the wall of the housing 121 (the housing 121 is an output terminal of the battery cell 12) to collect voltage information.

[0105] In some embodiments, the insulating element 141 may be integrally injection molded with a plurality of core wires 142.

[0106] In some embodiments, multiple insulating elements 141 may be provided, and each insulating element 141 covers one core wire 142.

[0107] The core wire 142 can be understood as a conductive element with a smooth and continuous cross-sectional profile, such as a circle or ellipse. Of course, the cross-sectional shape of the core wire 142 can also be polygonal. The core wire 142 is generally electrically connected through its two ends and typically extends in a single direction. Each core wire 142 generally connects only two electrical connection points. The core wire 142 is generally manufactured using a wire drawing process.

[0108] In some embodiments, the battery device 100 includes a plurality of battery cells 12, each battery cell 12 corresponding to a plurality of sampling elements, and each core wire 142 is electrically connected to a sampling element.

[0109] In some embodiments, the first connector 15 may consist of only an insulating shell, with the contact terminal 151 housed within the insulating shell. In other embodiments, the contact terminal 151 may be connected to the insulating shell by means of injection molding or bonding.

[0110] In some embodiments, the first pawl 1511 and the second pawl 1512 are disposed opposite each other along a first direction X.

[0111] In some embodiments, the first barb 1511 and the second barb 1512 have thinned portions, the thickness of which is less than the thickness of a portion thereof, so that the first barb 1511 and the second barb 1512 have tips that can more easily pierce the insulating member 141. In some embodiments, the first barb 1511 and the second barb 1512 may be needle-shaped.

[0112] The first barb 1511 and the second barb 1512 pierce the insulation 141 and clamp the core wire 142, meaning that the core wire 142 forms a stable connection with the contact terminal 151 through the relative clamping force provided by the first barb 1511 and the second barb 1512. The first barb 1511 and the second barb 1512 clamp the outer periphery of the core wire 142. This also means that the first barb 1511 and the second barb 1512 clamp the core wire 142 without bending. In other words, the clamping of the core wire 142 is completed after the first barb 1511 and the second barb 1512 pierce the insulation 141 in a single direction. In some embodiments, referring to FIG9, the ends of the first barb 1511 and the second barb 1512 do not contact the core wire 142. The core wire 142 is clamped between the surface of the first barb 1511 facing the core wire 142 and the surface of the second barb 1512 facing the core wire 142. In some embodiments, the surface of the first barb 1511 facing the core wire 142 and the surface of the second barb 1512 facing the core wire 142 are tangent to the outer peripheral surface of the core wire 142.

[0113] In some embodiments, after the first barb 1511 and the second barb 1512 pierce the insulating member 141 and clamp the core wire 142, the core wire 142 undergoes plastic deformation. For example, the cross-section of the core wire 142 changes from a circle to an ellipse or to an irregular shape formed by multiple arc segments. Of course, in other embodiments, after the first barb 1511 and the second barb 1512 pierce the insulating member 141 and clamp the core wire 142, the core wire 142 may not undergo plastic deformation.

[0114] In some embodiments, after the first barb 1511 and the second barb 1512 pierce the insulation member 141 and clamp the core wire 142, the distance between the first barb 1511 and the second barb 1512 along the first direction X remains unchanged compared to before the first barb 1511 and the second barb 1512 clamp the core wire 142. Of course, in other embodiments, the distance between the first barb 1511 and the second barb 1512 along the first direction X may increase compared to before the first barb 1511 and the second barb 1512 clamp the core wire 142.

[0115] In the technical solution of this application embodiment, compared with flexible circuit boards, the core wire 142 is directly connected to the sampling unit 13 to collect information of the battery cell 12, eliminating the need to design complex electrical connection circuits and reducing the design cost of the battery device 100. Furthermore, since each core wire 142 can be adaptively bent to complete assembly according to the connection points of different sampling units 13, it is beneficial to improve the assembly efficiency and production efficiency of the battery device 100.

[0116] In addition, by piercing the insulating part 141 with the first barb 1511 and the second barb 1512 and clamping the core wire 142, the electrical connection between the contact terminal 151 and the ribbon cable 14 is achieved, which can eliminate the process steps of opening windows in the insulating part 141 and riveting the barbs a second time, thus significantly improving the production efficiency of the battery device 100.

[0117] According to some embodiments of this application, please refer to Figures 4-9. Multiple first pawls 1511 are provided, and the multiple first pawls 1511 are spaced apart along the second direction Y, where the second direction Y intersects the first direction X.

[0118] In some embodiments, multiple first pawls 1511 are provided, and one second pawl 1512 is provided.

[0119] In some embodiments, the second direction Y is the length direction of the contact terminal 151.

[0120] In some embodiments, the first connector 15 further includes an insulating shell, and the contact terminal 151 is inserted into the second shell 153 along the second direction Y.

[0121] In the above scheme, the connection stability between the contact terminal 151 and the core wire 142 can be improved by clamping the core wire 142 with multiple first barbs 1511 and second barbs 1512.

[0122] According to some embodiments of this application, please refer to Figures 4-9. Multiple second pawls 1512 are provided, and the multiple second pawls 1512 are spaced apart along the second direction Y, which intersects with the first direction X.

[0123] In some embodiments, a plurality of second pawls 1512 correspond one-to-one with a plurality of first pawls 1511.

[0124] In some embodiments, the number of second pawls 1512 is different from the number of first pawls 1511.

[0125] In the above scheme, the connection stability between the contact terminal 151 and the core wire 142 can be further improved by clamping the core wire 142 with multiple first barbs 1511 and multiple second barbs 1512.

[0126] According to some embodiments of this application, please refer to FIG7. In the same projection plane perpendicular to the first direction X, the orthographic projection of the first pawl 1511 and the orthographic projection of the second pawl 1512 are alternately arranged along the second direction Y.

[0127] In some embodiments, within the same projection plane perpendicular to the first direction X, the orthographic projections of the first pawl 1511 and the second pawl 1512 are alternately arranged along the second direction Y, and the orthographic projections of the first pawl 1511 and the second pawl 1512 at least partially overlap.

[0128] In the above scheme, since the orthographic projections of the first barb 1511 and the second barb 1512 are alternately arranged along the second direction Y in the same projection plane perpendicular to the first direction X, the area of ​​the same number of first barbs 1511 and second barbs 1512 providing clamping force to the core wire 142 is large, which is beneficial to improving the connection stability between the contact terminal 151 and the core wire 142.

[0129] According to some embodiments of this application, please refer to Figures 6-8. In the same projection plane perpendicular to the first direction X, the orthographic projection of the first pawl 1511 and the orthographic projection of the second pawl 1512 do not overlap.

[0130] In the same projection plane perpendicular to the first direction X, the orthographic projections of the first spike 1511 and the second spike 1512 do not overlap. This means that, along the first direction X, no second spike 1512 is provided between the same first spike 1511 of two adjacent contact terminals 151. This arrangement results in a larger distance between the electrical connection points of two adjacent contact terminals 151; in other words, the creepage distance between two adjacent contact terminals 151 is larger. This also reduces the risk of high-voltage breakdown of the insulation component 141.

[0131] In the above scheme, since the orthographic projection of the first barb 1511 and the orthographic projection of the second barb 1512 do not overlap in the same projection plane perpendicular to the first direction X, the creepage distance between adjacent contact terminals 151 is large, and the risk of electrical breakdown leading to electrical connection failure and fire is low.

[0132] According to some embodiments of this application, referring to Figures 6-8, the first pawl 1511 has a first side 15111 facing the core wire 142, and the second pawl 1512 has a second side 15121 facing the core wire 142, both the first side 15111 and the second side 15121 being planar; and / or, the first pawl 1511 has a third side 15114 facing away from the core wire 142, and the second pawl 1512 has a fourth side 15124 facing away from the core wire 142, both the third side 15114 and the fourth side 15124 being planar.

[0133] The fact that both the first side surface 15111 and the second side surface 15121 are planes can be understood as meaning that the first side surface 15111 and the second side surface 15121 are surfaces composed of planes. For example, they may include multiple straight planes, but not curved surfaces. The aforementioned planes do not include curved surfaces caused by riveting or other processing methods. Of course, if the first side surface 15111 and the second side surface 15121 have a small curvature due to the reaction force of the clamping core material, they are also considered as planes.

[0134] The third side 15114 and the fourth side 15124 are both planar surfaces. This can be understood as surfaces composed of planar surfaces, such as multiple straight surfaces, but excluding curved surfaces. The aforementioned planar surfaces do not include curved surfaces caused by riveting or other processing methods. However, if the third side 15114 and the fourth side 15124 exhibit a small curvature due to the reaction force of the clamping core material, this also falls under the category of planar surfaces.

[0135] In the above scheme, since the first side 15111 and the second side 15121 are both planar, and / or the third side 15114 and the fourth side 15124 are both planar, the design cost of the first barb 1511 and the second barb 1512 is relatively low, and the risk of stress concentration when the first side 15111 and the second side 15121 are subjected to force is also relatively low, and the contact terminal 151 and the core wire 142 have high connection stability.

[0136] According to some embodiments of this application, referring to Figures 6-9, the contact terminal 151 further includes a base plate 1513, and a first spike 1511 and a second spike 1512 are respectively disposed on both sides of the base plate 1513 in a first direction X. The first spike 1511 has a first root 15112 connected to the base plate 1513 and a first end 15113 away from the base plate 1513, and the second spike 1512 has a second root 15122 connected to the base plate 1513 and a second end 15123 away from the base plate 1513. Along the first direction X, the distance between the first root 15112 and the second root 15122 is smaller than the distance between the first end 15113 and the second end 15123.

[0137] In some embodiments, the base plate 1513, the first spike 1511, and the second spike 1512 are integrally formed.

[0138] In some embodiments, the first barb 1511 and the second barb 1512 can be connected to the base plate 1513 by means of welding or other methods.

[0139] In some embodiments, referring to FIG9, the distance between the first root portion 15112 and the second root portion 15122 along the first direction X is less than the distance between the first end portion 15113 and the second end portion 15123. The first root portion 15112 and the second root portion 15122 are free ends and do not bend toward the core wire 142 after piercing the core wire 142.

[0140] Because the distance between the first root portion 15112 and the second root portion 15122 along the first direction X is smaller than the distance between the first end portion 15113 and the second end portion 15123, when the contact terminal 151 pierces the insulation member 141, the first barb 1511 and the second barb 1512 more easily clamp the core wire 142 between the two and provide a certain clamping force.

[0141] In the above scheme, since the distance between the first root 15112 and the second root 15122 along the first direction X is smaller than the distance between the first end 15113 and the second end 15123, the first barb 1511 and the second barb 1512 are more likely to pierce the insulating member 141 and clamp the core material between them, which reduces the assembly difficulty of the contact terminal 151 and the ribbon cable 14 and helps to improve the production efficiency of the battery device 100.

[0142] According to some embodiments of this application, please refer to Figures 6-8. Along the first direction X, the distance between two adjacent contact terminals 151 is H, which satisfies: 1mm≤H≤1.5mm.

[0143] Please refer to Figure 8. The spacing between two adjacent contact terminals 151 refers to the distance between the center lines of two adjacent contact terminals 151 in the first direction X.

[0144] Along the first direction X, the spacing between two adjacent contact terminals 151 can be any value between 1 mm and 1.5 mm, for example, any one of 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, or any range between two of them.

[0145] In the above scheme, when H≥1mm, the spacing between two adjacent contact terminals 151 is larger along the first direction X, the risk of short circuit inside the first connector 15 is lower, and the reliability of the connector is higher; when H≤1.5mm, the spacing between two adjacent contact terminals 151 is smaller along the first direction X, the space occupied by the same number of contact terminals 151 is smaller, which is conducive to reducing the overall size of the first connector 15 and thus improving the energy density of the battery device 100; therefore, when 1mm≤H≤1.5mm, the energy density of the battery device 100 can be improved while ensuring the high reliability of the first connector 15.

[0146] According to some embodiments of this application, please refer to Figures 6-8, 1.2mm≤H≤1.5mm.

[0147] Along the first direction X, the spacing between two adjacent contact terminals 151 can be any value between 1 mm and 1.5 mm, such as any one of 1.2 mm, 1.25 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.45 mm, 1.5 mm, or any range between two of them.

[0148] In the above scheme, when H≥1.2mm, the spacing between two adjacent contact terminals 151 is larger along the first direction X, the risk of short circuit inside the first connector 15 is lower, and the reliability of the connector can be further improved; when H≤1.5mm, the spacing between two adjacent contact terminals 151 is smaller along the first direction X, the space occupied by the same number of contact terminals 151 is smaller, which is conducive to reducing the overall size of the first connector 15, thereby improving the energy density of the battery device 100; therefore, when 1mm≤H≤1.5mm, the energy density of the battery device 100 can be improved while ensuring the high reliability of the first connector 15.

[0149] According to some embodiments of this application, please refer to Figures 5-6. The first connector 15 further includes a first housing 152 and a plurality of second housings 153. The plurality of second housings 153 are all housed in the first housing 152, and each second housing 153 is provided with a row of contact terminals 151.

[0150] The first housing 152 can be made of plastic, such as, but not limited to, polycarbonate, polybutylene terephthalate, nylon, and liquid crystal polymer. Alternatively, the first housing 152 can also be made of ceramic materials.

[0151] The second housing 153 can be made of plastic, such as, but not limited to, polycarbonate, polybutylene terephthalate, nylon, and liquid crystal polymer. The first housing 152 can also be made of ceramic or other similar materials.

[0152] In some embodiments, a plurality of second housings 153 may be arranged sequentially along a first direction X and at least partially housed within a first housing 152.

[0153] In some embodiments, a plurality of second housings 153 are completely housed within a first housing 152.

[0154] The number of second shells 153 can be two, three, four, five, etc.

[0155] In the above solution, the modular splicing of the first housing 152 and the second housing 153 of the first connector 15 makes it suitable for different battery devices 100, which is beneficial for integrated production on automated production lines. It also facilitates automated assembly, improving production efficiency. Furthermore, it simplifies the maintenance of specific contact terminals 151, reducing maintenance costs.

[0156] According to some embodiments of this application, please refer to Figures 5-6. The first housing 152 has a plurality of first receiving cavities spaced apart along a third direction Z. Each first receiving cavity is used to receive a second housing 153. The third direction Z intersects with the first direction X.

[0157] In some embodiments, the first receiving cavity may have only one opening, through which the second housing 153 is inserted into the first receiving cavity.

[0158] In some embodiments, the internal space of the first housing 152 may be divided into a plurality of first receiving cavities by a partition plate.

[0159] In some embodiments, the internal space of the first housing 152 may be divided into a plurality of first receiving cavities by at least one set of protrusions, each set of protrusions may include a plurality of protrusions spaced apart in one direction.

[0160] In the above scheme, the first receiving cavity can be used as the assembly reference for the second housing 153, which simplifies the assembly difficulty and is conducive to the automated production of the first connector 15.

[0161] According to some embodiments of this application, please refer to Figures 5-6. The first receiving cavity has a first opening 154 on one side in the first direction X, and a second opening 155 on one side in the second direction Y. The second housing 153 is inserted into the first receiving cavity through the first opening 154, and the ribbon cable 14 is inserted into the first receiving cavity through the second opening 155. The second direction Y, the first direction X, and the third direction Z are perpendicular to each other.

[0162] The second housing 153 is inserted into the first receiving cavity through the first opening 154, and the ribbon cable 14 is inserted into the first receiving cavity through the second opening 155. This means that the second housing 153 can be clamped and assembled into the first receiving cavity through the second opening 155 without applying force to the ribbon cable 14 for assembly.

[0163] In some embodiments, the first receiving cavity has a second opening 155 on both sides in the second direction Y.

[0164] In the above solution, since the assembly direction of the second housing 153 is different from that of the ribbon cable 14, on the one hand, the assembly difficulty of the second housing 153 is reduced, and on the other hand, the risk of connection failure between the ribbon cable 14 and the contact terminal 151 due to excessive assembly stress between the contact terminal 151 and the ribbon cable 14 during the assembly process can be reduced.

[0165] According to some embodiments of this application, referring to Figures 5-6, the second housing 153 is provided with a limiting groove 1531, which extends along the first direction X. The inner surface of the first receiving cavity is provided with a protrusion 1523, which cooperates with the limiting groove 1531 to restrict the movement of the second housing 153 relative to the first housing 152 along the second direction Y.

[0166] In some embodiments, a plurality of bumps 1523 are provided, and the plurality of bumps 1523 are spaced apart along a first direction X.

[0167] In some embodiments, the protrusion 1523 extends along a first direction X, and the length direction of the protrusion 1523 is the first direction X.

[0168] In some embodiments, the first housing 152 includes a first wall and a second second wall disposed opposite each other along a third direction Z, a third wall disposed on a second direction Y side, and a fourth wall disposed on a first direction X side. The third wall connects the first wall and the second wall, and the fourth wall connects the first wall and the second wall. The first wall, the second wall, the third wall, and the fourth wall together define an internal space of the first housing 152. The first housing 152 also includes at least one partition plate connected to the third wall and the fourth wall and dividing the internal space of the first housing 152 into a plurality of first receiving cavities. A protrusion 1523 is disposed on any wall portion of the first housing 152. The end faces of the first wall, the second wall, the partition plate, and the fourth wall away from the third wall in the second direction Y together define a second opening 155. The end faces of the first wall, the second wall, the partition plate, and the third wall away from the fourth wall in the first direction X together define a first opening 154.

[0169] In the above scheme, the protrusion 1523 can guide the second housing 153 and improve the assembly accuracy between the second housing 153 and the first housing 152. On the other hand, it can also improve the structural stability after the second housing 153 is assembled into the first housing 152, thereby reducing the risk of connection failure between the contact terminal 151 and the ribbon cable 14.

[0170] According to some embodiments of this application, referring to Figures 4-6, the battery device 100 further includes a second connector 161, which also includes a connection terminal. The contact terminal 151 includes a first connecting portion 1514, a stop portion 1515, and a second connecting portion 1516. The first connecting portion 1514 connects to the connection terminal, and the second connecting portion 1516 includes a first pawl 1511 and a second pawl 1512. A protrusion 1523 abuts against the stop portion 1515 to restrict the contact terminal 151 from disengaging from the second housing 153 along the second direction Y.

[0171] In some embodiments, the battery device 100 further includes a battery management system, which is used for measuring battery terminal voltage, energy balancing among individual battery cells 12, estimating state of charge (SOC) and state of health (SOH), limiting power input and output, controlling charging curves, and isolating the battery pack from the load. The battery management system may include a battery management unit 16, which is responsible for monitoring the battery status, ensuring reliable battery operation, and optimizing battery performance and lifespan. The second connector 161 can be an electrical connector for the battery management system, or it can be an electrical connector for the battery management unit 16.

[0172] In some embodiments, the wall of the first housing 152 is provided with a through hole, and a portion of the connecting terminal extends into the first receiving cavity through the through hole and connects to the first connecting portion 1514.

[0173] In some embodiments, the second connector 161 includes a third housing 1611, and connection terminals are disposed on the third housing 1611.

[0174] In some embodiments, the second connector 161 includes a third housing 1611, a first housing 152 is provided with a second latch 1524, and the third housing 1611 is provided with a latch block 1612. The latch block 1612 cooperates with the second latch 1524 to restrict the first housing 152 from disengaging from the third housing 1611 in the second direction Y.

[0175] In some embodiments, the first connecting portion 1514, the anti-reverse portion 1515, and the second connecting portion 1516 are integrally formed, for example by stamping and bending.

[0176] In some embodiments, the first connecting part 1514, the anti-retraction part 1515, and the second connecting part 1516 can be separately processed and then connected to form a shape by welding or other methods.

[0177] In some embodiments, the interior of the second housing 153 is provided with a plurality of partition walls 1533 arranged at intervals along a first direction X. The plurality of partition walls 1533 divide the interior space of the second housing 153 into a plurality of second receiving cavities 1534, each of which is used to accommodate a contact terminal 151. A limiting groove 1531 communicates with each of the second receiving cavities 1534. Along the second direction Y, a protrusion 1523 is disposed between the anti-retraction portion 1515 and the ribbon cable 14. With this arrangement, if the contact terminal 151 wants to detach from the second housing 153, the protrusion 1523 will block the anti-retraction portion 1515 from moving along the second direction Y, thereby improving the connection stability between the contact terminal 151 and the second housing 153.

[0178] In the above scheme, after the second housing 153 is assembled into the first housing 152, the setting of the protrusion 1523 can also improve the structural stability of the contact terminal 151 after assembly, so as to reduce the risk of electrical connection failure caused by excessive displacement of the contact terminal 151.

[0179] According to some embodiments of this application, please refer to Figures 5-7. The first connecting portion 1514 includes a first spring piece 15141 and a second spring piece 15142. The first spring piece 15141 and the second spring piece 15142 are arranged opposite to each other along the third direction Z. Along the second direction Y, one end of the first spring piece 15141 and one end of the second spring piece 15142 are both connected to the anti-retraction portion 1515. The other end of the first spring piece 15141 and the other end of the second spring piece 15142 are both free ends.

[0180] In some embodiments, the contact terminal 151 further includes a base plate 1513, with first spikes 1511 and second spikes 1512 respectively disposed on both sides of the base plate 1513 in a first direction X. Multiple first spikes 1511 are provided, and these multiple first spikes 1511 are simultaneously connected to the base plate 1513 via a third connecting portion 1517. Similarly, multiple second spikes 1512 are simultaneously connected to the base plate 1513 via a fourth connecting portion 1518. That is, the third connecting portion 1517 connects the multiple first spikes 1511 and the base plate 1513, and the fourth connecting portion 1518 connects the multiple second spikes 1512 and the base plate 1513. This arrangement allows the multiple first spikes 1511 and the multiple second spikes 1512 to jointly provide clamping force, providing a greater clamping force to the core wire 142 even when the contact terminal 151 is small, thus improving the connection stability between the contact terminal 151 and the core wire 142. In some other embodiments, the anti-reverse portion 1515 further includes a first sidewall 15152, a second sidewall 15153, a first top wall 15154, a second top wall 15155, and a bottom wall. The first sidewall 15152 and the second sidewall 15153 are disposed opposite each other along a first direction X. The first top wall 15154 and the second top wall 15155 are stacked along a third direction Z. Along the third direction Z, the second top wall 15155 is disposed between the first top wall 15154 and the bottom wall. The bottom wall is connected to the base plate 1513. The first sidewall 15152 is connected to the third connecting portion 1517 and the second top wall 15155. The second sidewall 15153 is connected to the first top wall 15154 and the bottom wall. The first spring piece 15141 is connected to the second sidewall 15153, and the second spring piece 15142 is connected to the bottom wall. In other embodiments, a first notch 1519 is formed between the fourth connecting portion 1518 and the second sidewall 15153 along the second direction Y. A third notch 1521 is formed between the second spring piece 15142 and the bottom wall, and a fourth notch 1522 and a second notch 1520 are formed between the first spring piece 15141 and the first top wall 15154. The fourth notch 1522 and the second notch 1520 are respectively located on both sides of the contact terminal 151 in the first direction X. The first notch 1519, the second notch 1520, the third notch 1521 and the fourth notch 1522 allow the contact terminal 151 to be formed by stamping and bending. In still some embodiments, a first snap-fit ​​15151 is provided on the second top wall 15155.

[0181] In some embodiments, the first connecting portion 1514, the anti-retraction portion 1515, and the second connecting portion 1516 are sequentially arranged along the second direction Y. The first connecting portion 1514 is disposed at the first end of the contact terminal 151, and the second connecting portion 1516 is disposed at the second end of the contact terminal 151. From the first end to the second end along the third direction Z, the distance between the first spring 15141 and the second spring 15142 first decreases and then increases. This arrangement allows the connecting terminal and the first connecting portion 1514 to form an electrical connection through "line contact," reducing the risk of excessive wear on the contact terminal 151 leading to a reduced lifespan. At the same time, the clamping force of the first spring 15141 and the second spring 15142 on the connecting terminal is relatively large, resulting in high connection stability between the contact terminal 151 and the connecting terminal.

[0182] The other ends of the first spring 15141 and the second spring 15142 are both free ends, meaning that the degree of freedom of the other ends of the first spring 15141 and the second spring 15142 in the third direction Z is unrestricted, and they can be displaced along the third direction Z. In other words, the other ends of the first spring 15141 and the second spring 15142 are not fixed by connectors or other means in the second direction Y and / or the first direction X. That is, this configuration can eliminate the need for some connectors.

[0183] In the above solution, since the other ends of the first spring 15141 and the second spring 15142 are both free ends, and one end of the first spring 15141 and one end of the second spring 15142 are both connected to the retaining part 1515, the first spring 15141 and the second spring 15142 can use the retaining part 1515 as a connecting base, eliminating the need for additional connecting bases. This ensures a stable connection with the connecting terminal while reducing the overall weight and size of the contact terminal 151, thereby improving the energy density of the battery device 100. Simultaneously, it simplifies the design of the first connecting part 1514 and reduces the amount of material used in the first connecting part 1514, thus lowering production costs.

[0184] According to some embodiments of this application, please refer to Figures 5-6. The anti-retraction part 1515 includes a first buckle 15151, and the second housing 153 is provided with a locking hole 1532. The first buckle 15151 cooperates with the locking hole 1532 to restrict the contact terminal 151 from disengaging from the second housing 153 along the second direction Y.

[0185] In some embodiments, the locator 1532 is connected to the second receiving cavity 1534.

[0186] In the above scheme, after the contact terminal 151 is assembled into the second housing 153, the setting of the first snap fastener 15151 can improve the structural stability of the contact terminal 151.

[0187] According to some embodiments of this application, referring to Figures 5-9, the interior of the second housing 153 is provided with a plurality of partition walls 1533 arranged at intervals along a first direction X. The plurality of partition walls 1533 divide the interior space of the second housing 153 into a plurality of second receiving cavities 1534, each second receiving cavity 1534 for accommodating a contact terminal 151. The partition walls 1533 are provided with channels 1535 connecting two adjacent second receiving cavities 1534, and a portion of the insulating member 141 is located within the channel 1535.

[0188] In some embodiments, the partition wall 1533 and the second housing 153 are integrally formed, for example, by injection molding. During the injection molding process, the channel 1535 can be formed together by designing the mold.

[0189] In some embodiments, the insulating member 141 includes a covering section 1412 and a connecting section 1411. The covering section 1412 covers the outer periphery of the core material, and the connecting section 1411 connects two adjacent covering sections 1412. A portion of the connecting section 1411 is located within the channel 1535. During the assembly of the ribbon cable 14, the connecting section 1411 can be cut to separate the different covering sections 1412, thereby allowing the core material to extend freely to achieve electrical connection with the sampling units 13 at different locations.

[0190] In the above scheme, the channel 1535 can limit the insulating component 141 located in the second housing 153, maintain the stability of the insulating component 141's shape, and reduce the wind direction of insulation failure. In addition, the channel 1535 can also guide the insulating component 141 during the process of assembling it into the second housing 153 along with the contact terminal 151, improving assembly accuracy and reducing assembly difficulty.

[0191] According to some embodiments of this application, referring to Figures 5-9, the cross-sectional area of ​​the core wire 142 is S, which satisfies: 0.08mm². 2 ≤S≤0.13mm 2 .

[0192] The cross-sectional area of ​​the core wire 142 can be determined by measuring the cross-sectional area of ​​the portion not clamped by the first barb 1511 and the second barb 1512. Of course, the cross-sectional area of ​​the portion of the core wire 142 clamped by the first barb 1511 and the second barb 1512 can also be measured. This can be done, for example, using equipment such as a cable cross-section measuring instrument. During measurement, multiple measurements can be taken at different locations on the core wire 142, and the average value can be selected as the measured value. Furthermore, the cross-sectional area of ​​the core wire 142 can be determined indirectly, for example, by using the displacement method. The conductor is completely immersed in water, and the volume of the displaced water is measured to calculate the volume of the conductor. Its volume can be approximated as the cross-sectional area multiplied by the length; therefore, the cross-sectional area can be deduced by measuring the length and volume. However, this method requires precise measuring tools, such as a graduated cylinder. Alternatively, the cross-sectional area of ​​the core wire 142 can be measured by weighing to obtain the conductor's density and length. First, accurately weigh a section of conductor of known length. Then, calculate the volume of this section of conductor using the density formula (density = mass / volume). The volume of a conductor is equal to its cross-sectional area multiplied by its length, from which the cross-sectional area can be obtained. However, this method requires precise weighing equipment and knowledge of the conductor's accurate density.

[0193] The cross-sectional area of ​​core wire 142 can be greater than or equal to 0.08 mm². 2 Less than or equal to 0.13mm 2 Any value between, for example, 0.08mm 2 0.09mm 2 0.1mm 2 0.11mm 2 0.12mm 2 0.13mm 2 The value of any one of them or the range between any two.

[0194] In the above scheme, when S≥0.08mm², the cross-sectional area of ​​core wire 142 is relatively large, allowing it to carry a larger current, resulting in higher transmission efficiency and stability. When S≤0.13mm², the cross-sectional area of ​​core wire 142 is relatively small. 2 Since the core wire 142 has a small cross-sectional area, the use of a small contact terminal 151 can not only ensure the stable clamping of the core wire 142, but also reduce the size of the first connector 15, thereby increasing the energy density of the battery device 100.

[0195] According to some embodiments of this application, please refer to Figures 5-9. The hardness of the first barb 1511 is greater than the hardness of the core wire 142, and the hardness of the second barb 1512 is greater than the hardness of the core wire 142.

[0196] The materials of the first barb 1511 and / or the second barb 1512 may include, but are not limited to, copper (pure copper). The material of the core wire 142 may include alloy copper (e.g., bronze, a copper-tin alloy). Of course, the materials of the first barb 1511, the second barb 1512, and the core wire 142 can all be alloy copper, such as copper-nickel alloy, copper-tin alloy, indium-gallium alloy, phosphor bronze-beryllium copper alloy, etc. The first barb 1511 and the second barb 1512 are selected from one of the above alloys, and the core wire 142 is selected from another alloy whose hardness is greater than that of the first barb 1511 and the second barb 1512. For example, the first barb 1511 and the second barb 1512 are copper-tin alloys, and the core wire 142 is a copper-nickel alloy.

[0197] In the above scheme, since the hardness of the first barb 1511 and the second barb 1512 are both greater than the hardness of the core wire 142, the risk of excessive deformation of the first barb 1511 and the second barb 1512 during the process of piercing the connection with the ribbon cable 14 is low, which is conducive to maintaining a stable and reliable connection between the contact terminal 151 and the ribbon cable 14.

[0198] According to some embodiments of this application, referring to Figures 5-8, the battery device 100 further includes a second connector 161, which also includes a connection terminal. The first connector 15 further includes a second housing 153, and the contact terminal 151 is disposed within the second housing 153. The contact terminal 151 includes a first connecting portion 1514, a stop portion 1515, and a second connecting portion 1516 arranged sequentially along a second direction Y. The first connecting portion 1514 connects to the connection terminal, and the second connecting portion 1516 includes a first pawl 1511 and a second pawl 1512. The stop portion 1515 includes a fourth housing, which abuts against the second housing 153 to prevent the contact terminal 151 from disengaging from the second housing 153 along the second direction Y, which intersects with the first direction X. The first connecting portion 1514 is disposed by the fourth housing on the side of the second housing opposite to the second connecting portion 1516 in the second direction Y.

[0199] In some embodiments, the fourth housing may include a plurality of walls, such as two walls facing each other in one direction, or two walls arranged in an L-shape, or three walls arranged in a triangular shape, or four walls enclosing a frame, etc.

[0200] Multiple walls enclose a frame-like structure or a box-like structure, and the outer surface of the fourth shell can be used to abut against the second shell 153.

[0201] In some embodiments, referring to FIG7, the fourth housing includes a first sidewall 15152, a second sidewall 15153, a first top wall 15154, a second top wall 15155, and a bottom wall. The first sidewall 15152 and the second sidewall 15153 are disposed opposite each other along a first direction X. The first top wall 15154 and the second top wall 15155 are stacked along a third direction Z. Along the third direction Z, the second top wall 15155 is disposed between the first top wall 15154 and the bottom wall. The bottom wall is connected to the base plate 1513. The first sidewall 15152 connects the third connecting portion 1517 and the second top wall 15155. The second sidewall 15153 connects the first top wall 15154 and the bottom wall. The first connecting portion 1514 is located on the side of the fourth housing opposite to the second connecting portion 1516 in the second direction Y.

[0202] The first connecting portion 1514 is located opposite to the second connecting portion 1516 in the second direction Y by the fourth housing. This means that the first connecting portion 1514 does not need to be fixed by an additional wall portion. For example, in FIG7, the first connecting portion 1514 does not have walls on either side in the first direction X.

[0203] In the above scheme, since the first connecting part 1514 is located away from the second connecting part 1516 in the second direction Y by the fourth housing, the first connecting part 1514 does not need to be fixed by an additional wall. In other words, the first connecting part 1514 can save some walls, which is beneficial to reduce the weight and size of the contact terminal 151, thereby improving the energy density of the battery device 100.

[0204] According to some embodiments of this application, referring to Figures 5-8, along the third direction Z, the maximum size of the fourth housing is greater than the maximum size of the first connecting part 1514, and the third direction Z, the second direction Y and the first direction X are perpendicular to each other.

[0205] Along the third direction Z, the maximum dimensions of the fourth housing and the first connecting part 1514 can be directly measured by measuring tools such as vernier calipers. In some cases, multiple measurements can be obtained and the average value can be taken as the final measurement value.

[0206] In the above scheme, under the premise of satisfying the anti-retraction requirement of the anti-retraction part 1515 and the connection stability between the first connecting part 1514 and the connecting terminal, since the maximum size of the fourth housing is greater than the maximum size of the first connecting part 1514 along the third direction Z, the overall size of the contact terminal 151 along the third direction Z can be designed to be relatively small, which is beneficial to reduce the size of the first connector 15 and improve the energy density of the battery device 100.

[0207] According to some embodiments of this application, referring to FIG1, this application provides an electrical device that includes a battery device 100 as described in one or more of the above embodiments, the battery device 100 being used to provide electrical energy.

[0208] In the above scheme, since the battery device 100 in one or more of the above embodiments has high production efficiency, the power-consuming device including the battery device 100 in one or more of the above embodiments also has high production efficiency.

[0209] According to some embodiments of this application, referring to Figures 4-9, this application provides a battery device 100. The battery device 100 includes a battery cell 12, a sampling unit 13, two ribbon cables 14, and a first connector 15. The sampling unit 13 is used to collect information from the battery cell 12. The ribbon cables 14 include an insulating member 141 and a plurality of core wires 142. The insulating member 141 covers the plurality of core wires 142, and one end of the core wires 142 is connected to the sampling unit 13. The first connector 15 includes at least two rows of contact terminals 151. Each row of contact terminals 151 includes a plurality of contact terminals 151 spaced apart along a first direction X. The contact terminals 151 include a first claw 1511 and a second claw 1512. The first claw 1511 and the second claw 1512 are respectively disposed on both sides of the contact terminal 151 in the first direction X. The first claw 1511 and the second claw 1512 pierce the insulating member 141 and clamp the core wires 142.

[0210] Multiple first spikes 1511 are provided, spaced apart along the second direction Y. Multiple second spikes 1512 are also provided, spaced apart along the second direction Y, which intersects the first direction X. In the same projection plane perpendicular to the first direction X, the orthographic projections of the first spikes 1511 and the second spikes 1512 are alternately arranged along the second direction Y. The orthographic projections of the first spikes 1511 and the second spikes 1512 do not overlap. The first spike 1511 has a first side 15111 facing the core wire 142, and the second spike 1512 has a second side 15121 facing the core wire 142. Both the first side 15111 and the second side 15121 are planar. The contact terminal 151 also includes a base plate 1513, with the first spikes 1511 and the second spikes 1512 respectively disposed on opposite sides of the base plate 1513 along the first direction X. The first pawl 1511 has a first root 15112 connected to the base plate 1513 and a first end 15113 away from the base plate 1513. The second pawl 1512 has a second root 15122 connected to the base plate 1513 and a second end 15123 away from the base plate 1513. Along the first direction X, the distance between the first root 15112 and the second root 15122 is less than the distance between the first end 15113 and the second end 15123.

[0211] The first connector 15 further includes a first housing 152 and two second housings 153, both of which are housed within the first housing 152. Each second housing 153 has a row of contact terminals 151 disposed therein. The first housing 152 has two first receiving cavities spaced apart along a third direction Z, each first receiving cavity accommodating one second housing 153. Each first receiving cavity has a first opening 154 on one side in the first direction X and a second opening 155 on one side in the second direction Y. The second housing 153 is inserted into the first receiving cavity through the first opening 154, and the ribbon cable 14 is inserted into the first receiving cavity through the second opening 155. The second direction Y, the first direction X, and the third direction Z are perpendicular to each other. The second housing 153 is provided with a limiting groove 1531 extending along the first direction X. The inner surface of the first receiving cavity is provided with a protrusion 1523, which engages with the limiting groove 1531 to restrict the movement of the second housing 153 relative to the first housing 152 along the second direction Y. The battery device 100 also includes a second connector 161, which further includes a connection terminal. The contact terminal 151 includes a first connecting portion 1514, a retaining portion 1515, and a second connecting portion 1516. The first connecting portion 1514 connects to the connection terminal, and the second connecting portion 1516 includes a first pawl 1511 and a second pawl 1512. A protrusion 1523 abuts against the retaining portion 1515 to prevent the contact terminal 151 from disengaging from the second housing 153 along the second direction Y. The first connecting portion 1514 includes a first spring tab 15141 and a second spring tab 15142. The first spring tab 15141 and the second spring tab 15142 are arranged opposite each other along the third direction Z. Along the second direction Y, one end of the first spring tab 15141 and one end of the second spring tab 15142 are both connected to the retaining portion 1515, and the other ends of the first spring tab 15141 and the second spring tab 15142 are both free ends.

[0212] The anti-retraction part 1515 includes a first latch 15151, and the second housing 153 is provided with a latching hole 1532. The first latch 15151 cooperates with the latching hole 1532 to prevent the contact terminal 151 from disengaging from the second housing 153 along the second direction Y. The interior of the second housing 153 is provided with a plurality of partition walls 1533 arranged at intervals along the first direction X. The plurality of partition walls 1533 divide the internal space of the second housing 153 into a plurality of second receiving cavities 1534, each second receiving cavity 1534 for receiving one contact terminal 151. The partition wall 1533 is provided with a channel 1535 connecting two adjacent second receiving cavities 1534, and a portion of the insulating member 141 is located within the channel 1535.

[0213] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; A sampling unit is used to collect information from the individual battery cells; At least one ribbon cable, the ribbon cable including an insulating component and a plurality of core wires, the insulating component covering the plurality of core wires, one end of the core wires being connected to the sampling unit; The first connector includes at least one row of contact terminals, each row of contact terminals including a plurality of contact terminals spaced apart along a first direction, each contact terminal including a first claw and a second claw, the first claw and the second claw being respectively disposed on both sides of the contact terminal in the first direction, the first claw and the second claw piercing the insulating member and clamping the core wire.

2. The battery device according to claim 1, characterized in that, The first spike is provided in multiple ways, and the multiple first spikes are spaced apart along the second direction, which intersects the first direction.

3. The battery device according to claim 2, characterized in that, The second claw is provided in multiple ways, and the multiple second claws are spaced apart along a second direction, which intersects with the first direction.

4. The battery device according to claim 3, characterized in that, Within the same projection plane perpendicular to the first direction, the orthographic projections of the first pawl and the second pawl are alternately arranged along the second direction.

5. The battery device according to claim 4, characterized in that, Within the same projection plane perpendicular to the first direction, the orthographic projections of the first pawl and the second pawl do not overlap.

6. The battery device according to any one of claims 1-5, characterized in that, The first barb has a first side facing the core wire, and the second barb has a second side facing the core wire, both the first side and the second side being planar; And / or, the first pawl has a third side facing away from the core wire and the second pawl has a fourth side facing away from the core wire, wherein the third side and the fourth side are both planar.

7. The battery device according to any one of claims 1-6, characterized in that, The contact terminal also includes a base plate, and the first spike and the second spike are respectively disposed on both sides of the base plate in the first direction; The first pawl has a first root connected to the base plate and a first end away from the base plate, and the second pawl has a second root connected to the base plate and a second end away from the base plate; Along the first direction, the distance between the first root and the second root is less than the distance between the first end and the second end.

8. The battery device according to any one of claims 1-7, characterized in that, Along the first direction, the distance between two adjacent contact terminals is H, which satisfies: 1mm≤H≤1.5mm.

9. The battery device according to claim 8, characterized in that, 1.2mm≤H≤1.5mm.

10. The battery device according to any one of claims 1-9, characterized in that, The first connector further includes: First shell; A plurality of second housings are provided, each of which is housed within the first housing, and each second housing is provided with a row of the contact terminals.

11. The battery device according to claim 10, characterized in that, The first housing has a plurality of first receiving cavities spaced apart along a third direction, each of the first receiving cavities being used to receive a second housing, the third direction intersecting the first direction.

12. The battery device according to claim 11, characterized in that, The first receiving cavity has a first opening on one side in the first direction and a second opening on one side in the second direction. The second housing is inserted into the first receiving cavity through the first opening. The ribbon cable is inserted into the first receiving cavity through the second opening. The second direction, the first direction, and the third direction are perpendicular to each other.

13. The battery device according to claim 12, characterized in that, The second housing is provided with a limiting groove, which extends along the first direction; The inner surface of the first receiving cavity is provided with a protrusion, which cooperates with the limiting groove to restrict the movement of the second housing relative to the first housing in the second direction.

14. The battery device according to claim 13, characterized in that, The battery device further includes a second connector, and the second connector further includes a connection terminal; The contact terminal includes a first connecting portion, a stop portion, and a second connecting portion. The first connecting portion connects to the connecting terminal, and the second connecting portion includes a first serrated claw and a second serrated claw. The protrusion abuts against the stop portion to restrict the contact terminal from disengaging from the second housing in the second direction.

15. The battery device according to claim 14, characterized in that, The first connecting part includes a first spring and a second spring. The first spring and the second spring are arranged opposite to each other along the third direction. Along the second direction, one end of the first spring and one end of the second spring are both connected to the anti-retraction part, and the other end of the first spring and the other end of the second spring are both free ends.

16. The battery device according to claim 14 or 15, characterized in that, The anti-retraction part includes a first buckle, and the second housing is provided with a locking hole. The first buckle cooperates with the locking hole to prevent the contact terminal from disengaging from the second housing in the second direction.

17. The battery device according to any one of claims 10-16, characterized in that, The interior of the second housing is provided with a plurality of partition walls arranged at intervals along the first direction, the plurality of partition walls dividing the interior space of the second housing into a plurality of second receiving cavities, each of the second receiving cavities being used to accommodate one of the contact terminals; The partition wall is provided with a channel connecting two adjacent second receiving cavities, and a portion of the insulating element is located within the channel.

18. The battery device according to any one of claims 1-17, characterized in that, The cross-sectional area of ​​the core wire is S, which satisfies: 0.08 mm². 2 ≤S≤0.13mm 2 .

19. The battery device according to any one of claims 1-18, characterized in that, The hardness of the first barb is greater than the hardness of the core wire, and the hardness of the second barb is greater than the hardness of the core wire.

20. The battery device according to any one of claims 1-19, characterized in that, The battery device further includes a second connector, and the second connector further includes a connection terminal; The first connector further includes a second housing, and the contact terminals are disposed within the second housing; The contact terminal includes a first connecting portion, a stop portion, and a second connecting portion arranged sequentially along a second direction. The first connecting portion connects to the connecting terminal. The second connecting portion includes a first pawl and a second pawl. The stop portion includes a fourth housing. The fourth housing abuts against the second housing to restrict the contact terminal from disengaging from the second housing along the second direction. The second direction intersects with the first direction. The first connecting portion is provided by the fourth housing on the side opposite to the second connecting portion in the second direction.

21. The battery device according to claim 20, characterized in that, Along the third direction, the maximum size of the fourth housing is greater than the maximum size of the first connecting part, and the third direction, the second direction, and the first direction are perpendicular to each other.

22. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-21, the battery device being used to provide electrical energy.

Images