Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a battery monomer and a sampling assembly. The sampling assembly comprises a temperature detection part and a wire harness assembly, the wire harness assembly comprises a wire harness main body and a connecting wire which are connected with each other, the connecting wire is electrically connected with the temperature detection part, the connecting wire comprises a conductor and an insulating shell, and the insulating shell covers the outer side of the conductor. The connecting line is bent to form at least one bent section and a plurality of straight sections, the bent section is connected with two adjacent straight sections, the plurality of straight sections extend along a first direction and are arranged side by side along a second direction, the insulating shells of every two adjacent straight sections are connected with each other, and a first weak structure is formed at the joint of the insulating shells. According to the battery, the connecting wire can be conveniently arranged in the battery, and the two straight sections can be mutually stripped when the connecting wire is pulled, so that the first weak structure can buffer external force borne by the connecting wire to relieve rigid pulling of the connecting wire, and the phenomena of breakage and the like of the connecting wire are favorably reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] In recent years, new energy vehicles have experienced rapid development. In the electric vehicle sector, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also growing. As a core component of new energy vehicles, batteries have high requirements for stability and reliability in use.

[0003] In battery technology, to ensure the safety of battery cells, a sampling assembly is generally installed inside the battery. The sampling assembly can collect the temperature of the battery cells during use, so as to obtain the battery usage status. However, the sampling assembly in existing batteries is prone to failure or damage during use, resulting in poor battery stability and a short service life. Utility Model Content

[0004] The embodiments of the present application provide a battery and an electrical device that can effectively improve the stability and service life of the battery.

[0005] In a first aspect, an embodiment of the present application provides a battery, comprising a battery cell and a sampling assembly; the sampling assembly comprises a temperature detection element and a wiring harness assembly, the temperature detection element is configured to detect the temperature of the battery cell, the wiring harness assembly comprises a wiring harness body and a connecting wire connected to each other, the wiring harness body is used to be electrically connected to a battery management system, the connecting wire is electrically connected to the temperature detection element, the connecting wire comprises a conductor and an insulating shell, the insulating shell is covered on the outside of the conductor; wherein, the connecting wire is bent to form at least one curved segment and multiple straight segments, the curved segment connects two adjacent straight segments, the multiple straight segments all extend along a first direction, and the multiple straight segments are arranged side by side along a second direction, the first direction is perpendicular to the second direction, and along the second direction, the insulating shells of each two adjacent straight segments are connected to each other and form a first weak structure at the connection.

[0006] In the above technical solution, the sampling assembly is provided with a temperature detection element and a wiring harness assembly, and the temperature detection element is connected to the wiring harness body of the wiring harness assembly through the connecting wire of the wiring harness assembly, so that the temperature detection element can be electrically connected to the battery management system through the wiring harness assembly, thereby enabling the sampling assembly to obtain or monitor problems of the battery cell to improve the reliability of the battery during use, wherein the connecting wire is provided with a conductor and an insulating shell covering the outside of the conductor, and the connecting wire is bent to form at least one curved section and multiple straight sections, and the multiple straight sections extend along the first direction and are arranged side by side along the second direction, and by connecting the insulating shells of each two adjacent straight sections to each other and forming a first weak structure at the connection, on the one hand, it is convenient to organize and install the battery internally The matching connecting wire is beneficial to improving the regularity of the connecting wire and optimizing the layout of the connecting wire in the battery. On the other hand, when the connecting wire is pulled during use, the two adjacent straight sections can be easily peeled off from each other, so that when the connecting wire is pulled by external force, one straight section of the connecting wire has the ability to separate from the other straight section, so that the first weak structure formed between the insulating shells of the two adjacent straight sections can buffer and absorb the external force exerted on the connecting wire, so as to alleviate the phenomenon of rigid pulling of the connecting wire, thereby reducing the phenomenon of breakage or connection failure of the connecting wire during use, thereby reducing the risk of failure or damage of the sampling assembly during use, and helping to improve the stability and service life of the battery.

[0007] In some embodiments, along the second direction, a first groove is defined between the insulating shells of every two adjacent straight sections, and a bottom wall of the first groove forms the first weak structure.

[0008] In the above technical solution, a first groove is formed between the insulating shells of the two straight sections to weaken the structural strength of the position where the insulating shells of the two straight sections are connected to each other, so that the bottom wall of the first groove forms a first weak structure between the two straight sections. The structure is simple, easy to manufacture, and easy to separate the two straight sections when pulled by external force.

[0009] In some embodiments, each two adjacent straight sections are formed with the first grooves on both sides of the third direction, the two first grooves are correspondingly arranged along the third direction, and the first weak structure is formed between the bottom surfaces of the two first grooves, and the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In the above technical solution, each of the two adjacent straight sections is formed with a first groove on both sides in the third direction, and the two first grooves are arranged relatively to each other along the third direction to form a first weak structure between the groove bottom surfaces of the two corresponding first grooves in the third direction. On the one hand, this can further weaken the strength of the first weak structure so that the two adjacent straight sections can be separated when pulled by external force. On the other hand, it can reduce the processing depth of a single first groove, which is beneficial to reducing the processing difficulty of the connecting wire of the wiring harness assembly.

[0011] In some embodiments, the insulating housing of the plurality of straight sections is integrally formed.

[0012] In the above technical solution, by setting the insulating shells of multiple straight sections as an integrally formed structure, the connection positions of the insulating shells of multiple straight sections form a first weak structure. The use of a connecting line with this structure can reduce the difficulty of forming the first weak structure between the insulating shells of each two adjacent straight sections, and can improve the forming efficiency, which is conducive to improving the production efficiency of the sampling assembly.

[0013] In some embodiments, the insulating shells of the plurality of straight sections are separately provided, and the insulating shells of every two adjacent straight sections are connected by adhesive bonding or hot melting.

[0014] In the above technical solution, the insulating shells of multiple straight sections are arranged as a split structure, and the insulating shells of two adjacent straight sections are bonded or hot-melt connected to form a first weak structure at the bonding position or hot-melt position of the insulating shells of the two adjacent straight sections. The connecting line using this structure can be bent to form different numbers of bent sections and straight sections according to actual conditions, so as to adapt to different batteries, which is beneficial to improving the applicability of the sampling assembly.

[0015] In some embodiments, the connecting line includes two conductors with opposite polarities, and the two conductors are respectively connected to the positive and negative poles of the temperature detection component. The insulating shell covers the outside of the two conductors, and a portion of the insulating shell is located between the two conductors to insulate and isolate the two conductors; wherein the portion of the insulating shell located between the two conductors forms a second weak structure.

[0016] In the above technical solution, the connecting wire is provided with two conductors, and the two conductors are respectively connected to the positive pole and negative pole of the temperature detection element to facilitate the output or input of the electrical signal of the temperature detection element, wherein the insulating shell of the connecting wire is covered on the outside of the two conductors, and part of the insulating shell is arranged between the two conductors to achieve insulation isolation between the two conductors, and a second weak structure is formed by forming a part of the insulating shell between the two conductors so that when the two conductors of the connecting wire are pulled during use, the two conductors can be easily peeled off from each other, so that one conductor of the connecting wire has the ability to separate from the other conductor when pulled by external force, so that the second weak structure formed by the insulating shell between the two conductors of the connecting wire can buffer and absorb the external force exerted on the conductor, so as to alleviate the phenomenon of rigid pulling of the conductor, and thus can reduce the phenomenon of breakage or connection failure of the conductor of the connecting wire during use, so as to reduce the risk of failure or damage of the connecting wire during use, which is conducive to improving the stability and service life of the connecting wire.

[0017] In some embodiments, the insulating shell of the connecting wire is formed with a second groove on at least one side in the third direction, the second groove is located between the two conductors, the bottom wall of the second groove forms the second weak structure, and the first direction, the second direction and the third direction are perpendicular to each other.

[0018] In the above technical solution, a second groove is provided on at least one side of the insulating shell of the connecting wire in the third direction so that the structural strength of the portion of the insulating shell located between the two conductors is weakened, thereby allowing the bottom wall of the second groove to form a second weak structure between the two conductors. The structure is simple, easy to manufacture, and facilitates separation of the two conductors when pulled by external force.

[0019] In some embodiments, the insulating shell of the connecting wire is formed with the second groove on both sides of the third direction, two second grooves are correspondingly arranged along the third direction, and the second weak structure is formed between the bottom surfaces of the two second grooves.

[0020] In the above technical solution, second grooves are provided on both sides of the insulating shell of the connecting wire in the third direction, and the two second grooves are arranged opposite to each other along the third direction, so as to form a second weak structure between the groove bottom surfaces of the two corresponding second grooves in the third direction. On the one hand, the strength of the second weak structure can be further weakened to facilitate the separation of the two conductors when pulled by external force. On the other hand, the depth of processing of a single second groove can be reduced, which is beneficial to reducing the processing difficulty of the connecting wire.

[0021] In some embodiments, the connecting line is provided separately from the wiring harness body, the wiring harness body includes a plurality of wiring harnesses, and at least one of the wiring harnesses is connected to the connecting line.

[0022] In the above technical solution, the connecting wire and the wiring harness main body are set as a separate structure, and the connecting wire is connected to at least one of the multiple wiring harnesses of the wiring harness main body to achieve electrical connection between the temperature detection component and the wiring harness main body. The wiring harness assembly with this structure can, on the one hand, reduce the difficulty of assembling the wiring harness assembly and the temperature detection component, and on the other hand, can achieve the process of assembling the connecting wire and the temperature detection component with each other and the process of assembling the wiring harness main body into the battery without affecting each other, so that the connecting wire and the temperature detection component can be assembled with each other first and then assembled into the battery, and the connecting wire and the wiring harness main body of the wiring harness assembly can be assembled and connected with each other, thereby optimizing the production rhythm of the battery and helping to improve the assembly efficiency of the battery.

[0023] In some embodiments, the conductor of the connecting wire is connected to the wire harness by welding to form a first weld mark, and an insulating layer is provided at the connection position between the connecting wire and the wire harness, and the insulating layer covers the first weld mark.

[0024] In the above technical solution, by covering the outer side of the first weld mark formed by connecting the conductor of the connecting wire and the wiring harness with an insulating layer, the insulating layer can insulate and isolate the first weld mark from other components, thereby helping to reduce the risk of leakage of the sampling assembly and the risk of short circuit with other components.

[0025] In some embodiments, the connecting line includes two conductors with opposite polarities, and the two conductors are respectively connected to the positive and negative poles of the temperature detection element; wherein each of the conductors is welded to one of the wiring harnesses to form one of the first weld marks, and the outer side of each of the first weld marks is covered with one of the insulating layers.

[0026] In the above technical solution, the connecting line includes two conductors with opposite polarities, and the two conductors are respectively welded to the two wire harnesses and both form a first weld mark. By providing an insulating layer corresponding to each first weld mark, the insulating layer can also insulate the first weld marks formed by the two conductors being welded to the two wire harnesses, thereby reducing the risk of short circuit between the two conductors of the connecting line.

[0027] In some embodiments, the wiring harness assembly includes a plurality of wiring harnesses, at least one of which is integrally formed with the connecting wire.

[0028] In the above technical solution, by setting the connecting wire and at least one of the multiple wire harnesses of the wiring harness assembly as an integrally formed structure, a part of the wiring harness forms the connecting wire, and the other part forms the wiring harness body of the wiring harness assembly together with other wiring harnesses, thereby improving the connection stability and reliability between the connecting wire and the wiring harness body, which is conducive to reducing the risk of connection failure between the connecting wire and the wiring harness body.

[0029] In some embodiments, the sampling assembly also includes a mounting bracket; a mounting cavity with an opening is formed inside the mounting bracket, and the temperature detection component is accommodated in the mounting cavity; wherein, one end of the connecting wire away from the wiring harness body extends from the opening into the mounting cavity and is connected to the temperature detection component, and the other end is located outside the mounting cavity and is connected to the wiring harness body.

[0030] In the above technical solution, the battery sampling assembly is also provided with a mounting bracket, and a mounting cavity with an opening is formed inside the mounting bracket, and the temperature detection component is accommodated in the mounting cavity inside the mounting bracket, so that the mounting bracket can play a certain protective role for the temperature detection component, so as to reduce the phenomenon of the temperature detection component being damaged by bumps during use, and can reduce the difficulty of assembling the temperature detection component into the interior of the battery.

[0031] In some embodiments, the mounting cavity is filled with sealant, and the sealant covers the temperature detecting element.

[0032] In the above technical solution, the mounting cavity of the mounting frame is also filled with sealant, and the temperature detection element is covered with sealant. On the one hand, it can improve the stability and reliability of the temperature detection element installed in the mounting cavity, and can further stabilize the temperature detection element to alleviate the phenomenon of shaking or bumping of the temperature detection element in the mounting cavity. On the other hand, it can also achieve sealing of the temperature detection element to reduce the damage of the temperature detection element after being affected by moisture, which is beneficial to improve the service life of the temperature detection element.

[0033] In some embodiments, the conductor of the connecting wire is connected to the temperature detecting element by welding to form a second weld mark, and the sealant covers the second weld mark.

[0034] In the above technical solution, by welding the conductor of the connecting wire to the temperature detection element, it is beneficial to improve the connection stability and reliability between the connecting wire and the temperature detection element, thereby alleviating the risk of connection failure between the connecting wire and the temperature detection element, so as to improve the use stability of the sampling assembly. Among them, by setting the sealant to cover the second weld mark structure formed by the welding connection between the conductor of the connecting wire and the temperature detection element, the sealant can also play a certain protective role on the connection position between the conductor of the connecting wire and the temperature detection element, thereby alleviating the connection position between the conductor of the connecting wire and the temperature detection element from being bumped, damaged or damp, and thus helping to further improve the connection stability and reliability between the connecting wire and the temperature detection element.

[0035] In some embodiments, the battery further comprises a busbar component and a plurality of the battery cells, the busbar component electrically connecting the plurality of the battery cells; wherein the mounting bracket is mounted on the busbar component, and the mounting bracket abuts against the battery cells.

[0036] In the above technical solution, the battery is also provided with a busbar component, and the busbar component is electrically connected to the battery cell. By setting the mounting frame to be installed on the busbar component and making the mounting frame and the battery cell abut against each other, the temperature detection component can collect the temperature of the battery cell while also playing a certain stabilizing role on the mounting frame for installing the temperature detection component, so as to stabilize the temperature detection component and help reduce the difficulty of assembling the mounting frame for installing the temperature detection component into the interior of the battery.

[0037] In some embodiments, the mounting bracket is snap-fitted to the busbar component.

[0038] In the above technical solution, by setting the mounting frame as a structure that is snapped onto the convergence component, on the one hand, the difficulty of assembly between the mounting frame and the convergence component can be reduced, and there is no need to introduce other more complex structures or components to achieve the assembly between the mounting frame and the convergence component, which is beneficial to improving the assembly efficiency between the mounting frame and the convergence component. On the other hand, a detachable connection between the mounting frame and the convergence component can be achieved, thereby facilitating the maintenance or replacement of the mounting frame and the temperature detection component during later use, which is beneficial to reducing the difficulty and cost of later maintenance of the battery.

[0039] In some embodiments, the mounting frame is provided with a slot, and a portion of the converging component is locked in the slot.

[0040] In the above technical solution, a card slot is provided on the mounting frame, and part of the converging component is clamped in the card slot to achieve the card connection assembly between the mounting frame and the converging component. The structure is simple and the assembly is convenient.

[0041] In some embodiments, the mounting frame is provided with the card slot on the surface of one side in the first direction, the card slot passes through both ends of the mounting frame along the second direction, and the mounting cavity is formed with the opening at at least one end of the mounting frame along the second direction.

[0042] In the above technical solution, by providing the card slot on the surface of one side of the mounting frame in the first direction, and the card slot extending through both ends of the mounting frame in the second direction, the difficulty of machining and forming the card slot on the mounting frame can be reduced, thereby reducing the difficulty of manufacturing the mounting frame. On the other hand, the difficulty of partially locking the confluence component within the card slot can be further reduced, thereby reducing the difficulty of assembling the confluence component and the mounting frame, thereby effectively improving the production efficiency of the battery. In addition, by forming the opening of the mounting cavity at at least one end of the mounting frame in the second direction, the interference between the opening and the card slot can be reduced, and the interference between the confluence component and the temperature detection component can be reduced.

[0043] In some embodiments, a notch is provided at one end of the convergence component in the second direction, and the notch passes through both sides of the convergence component along the third direction. The mounting frame is inserted into the notch along the second direction, and part of the convergence component is clamped in the slot. The first direction, the second direction and the third direction are perpendicular to each other.

[0044] In the above technical solution, a notch is provided at one end of the convergence component in the second direction, and the notch is a structure that penetrates both sides of the convergence component in the third direction, so that the mounting frame is inserted into the notch of the convergence component along the second direction, and part of the convergence component can also be clamped in the card slot of the mounting frame, that is, it can be realized that part of the convergence component is a structure that is inserted into the card slot from one end of the card slot in the second direction. The battery adopting this structure can improve the reliability and stability of the mounting frame assembled to the convergence component, and the notch of the convergence component can also play a certain positioning and limiting role on the mounting frame, which is beneficial to improving the assembly quality of the mounting frame and the convergence component of the sampling assembly.

[0045] In some embodiments, the slots are provided on surfaces of both sides of the mounting frame in the first direction.

[0046] In the above technical solution, by providing card slots on both sides of the mounting frame along the first direction, the two opposite sides of the notch along the first direction of the confluence component can be respectively clamped in the two card slots on both sides of the mounting frame in the first direction, thereby further improving the reliability and stability of the mounting frame of the sampling assembly assembled on the confluence component, which is conducive to further improving the assembly quality of the mounting frame of the sampling assembly and the confluence component.

[0047] In some embodiments, a pressing portion is convexly provided on the bottom surface of the slot, the pressing portion is located in the notch, and the pressing portion presses against the portion of the converging component stuck in the slot along the first direction.

[0048] In the above technical solution, a pressing portion is protruded on the bottom surface of the slot, and the pressing portion presses against the portion of the confluence component stuck in the slot along the first direction, so that the portion of the confluence component stuck in the slot and the mounting frame can be interference fit, which is beneficial to further improve the firmness of the confluence component stuck in the slot of the mounting frame, so as to further improve the stability of the mounting frame of the sampling assembly assembled on the confluence component.

[0049] In some embodiments, the pressing portion has a pressing surface that presses against the conduit component in the first direction; wherein, the pressing portion also has two guiding inclined surfaces, and the two guiding inclined surfaces are respectively located on both sides of the pressing surface in the second direction, and the guiding inclined surfaces connect the pressing surface and the bottom surface of the slot.

[0050] In the above technical solution, the pressing portion has a pressing surface that presses against the confluence component in the first direction, and the pressing portion is also provided with guiding inclined surfaces located on both sides of the pressing surface in the second direction, so that the guiding inclined surfaces can connect the pressing surface and the bottom surface of the slot, so that in the process of the confluence component being inserted into the slot along the second direction, the guiding inclined surfaces can play a certain guiding role on the confluence component, so that the guiding inclined surfaces can guide the confluence component to the position where it presses against the pressing surface, thereby alleviating the phenomenon that the pressing portion and the confluence component are stuck to each other, which is beneficial to reducing the difficulty of the pressing portion and the confluence component pressing against each other, so as to reduce the difficulty of assembly between the confluence component and the mounting frame.

[0051] In some embodiments, the card slot has two slot side surfaces that are relatively arranged in the third direction, and at least one slot side surface of the card slot is protruding with a pressing portion. Along the third direction, the pressing portion is located on one side of the convergence component, and the pressing portion presses against the portion of the convergence component that is stuck in the card slot.

[0052] In the above technical solution, a pressing portion is protruded on at least one side surface of the card slot, and the pressing portion presses against one side of the confluence component in the third direction along the third direction, so that the part of the confluence component stuck in the card slot and the mounting frame can be interference fit, which is beneficial to further improve the firmness of the confluence component stuck in the card slot of the mounting frame, so as to further improve the stability of the mounting frame of the sampling assembly assembled on the confluence component.

[0053] In some embodiments, the pressing portion is protruded from both side surfaces of the slot.

[0054] In the above technical solution, by arranging pressing parts on both sides of the slot, the part of the convergence component stuck in the slot can be pressed against the pressing parts on both sides in the third direction, which is beneficial to further improve the firmness of the convergence component stuck in the slot of the mounting frame.

[0055] In a second aspect, an embodiment of the present application further provides an electrical device comprising the above-mentioned battery, wherein the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0057] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0058] Figure 2 An exploded view of the structure of a battery provided in some embodiments of the present application;

[0059] Figure 3 A schematic diagram of the assembly of a battery cell group and a sampling assembly provided in some embodiments of the present application;

[0060] Figure 4 A schematic diagram of the assembly of battery cells and busbar components provided in some embodiments of the present application;

[0061] Figure 5 A schematic structural diagram of a sampling assembly provided in some embodiments of the present application;

[0062] Figure 6 A partial enlarged view of point A of the sampling assembly provided in some embodiments of the present application;

[0063] Figure 7 Schematic diagram of the assembly of the temperature sampling assembly and the connecting wires provided in some embodiments of the present application;

[0064] Figure 8 A schematic diagram of the structure of connecting lines provided in some embodiments of the present application;

[0065] Figure 9 A front view of a connecting line provided in some embodiments of the present application in a third direction;

[0066] Figure 10 A cross-sectional view of a plurality of straight sections of a connecting line provided in some embodiments of the present application;

[0067] Figure 11 An exploded view of the structure of a temperature sampling assembly provided in some embodiments of the present application;

[0068] Figure 12 Schematic diagram of the assembly of the confluence component and the temperature sampling assembly provided in some embodiments of the present application;

[0069] Figure 13 A schematic structural diagram of a confluence component provided in some embodiments of the present application;

[0070] Figure 14 for Figure 11 A partial enlarged view of position B of the temperature sampling assembly shown;

[0071] Figure 15 A schematic structural diagram of a mounting bracket for a temperature sampling assembly provided in yet other embodiments of the present application;

[0072] Figure 16 A front view of a mounting bracket of a temperature sampling assembly provided in some further embodiments of the present application in a second direction.

[0073] Icon: 1000-Vehicle; 100-Battery; 10-Box; 11-First Box Body; 12-Second Box Body; 20-Battery Cell Group; 21-Battery Cell; 211-Electrode Terminal; 212-Casing; 22-Convergence Component; 221-Notch; 30-Sampling Assembly; 31-Wire Harness Assembly; 311-Wire Harness Body; 312-Connecting Wire; 3121-Conductor; 3122-Insulating Shell; 3122a-Second Weak Structure; 3122b-Second Groove; 3123-Bend Section; 3124-Straight Section; 3125- First weak structure; 3126-first groove; 313-wiring harness; 314-insulating layer; 32-temperature sampling assembly; 321-temperature detection element; 3211-positive terminal; 3212-negative terminal; 322-mounting frame; 3221-opening; 3222-mounting cavity; 3223-slot; 3224-pressing portion; 3224a-pressing surface; 3224b-guide slope; 323-sealant; 40-insulating element; 200-controller; 300-motor; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0074] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0076] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0077] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0078] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0079] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0080] The term "plurality" used in this application refers to two or more (including two).

[0081] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0082] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0083] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0084] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0085] In some embodiments, the electrode assembly is a laminate structure.

[0086] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0087] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0088] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0089] As an example, the battery cells may be cylindrical, prismatic, soft-pack or other shaped battery cells. Prismatic battery cells include but are not limited to square-shell, blade-shaped, and polygonal batteries, such as hexagonal batteries.

[0090] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0091] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0092] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.

[0093] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0094] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0095] Batteries, with their outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide adaptability, and low self-discharge coefficient, are a vital component of today's new energy development. The development of battery technology requires simultaneous consideration of multiple design factors, including performance parameters such as energy density, cycle life, discharge capacity, and charge / discharge rate. Furthermore, battery safety must also be considered.

[0096] For a general battery, the battery includes a case and a plurality of battery cells arranged in the case. The plurality of battery cells are electrically connected through a busbar component to realize series or parallel connection between the plurality of battery cells. In the related art, in order to ensure the safety of the battery cells, a sampling assembly is generally provided in the battery. The sampling assembly can at least collect the temperature of the battery cells during use so as to obtain the battery usage status. The sampling assembly usually includes a wiring harness assembly, which is formed by bundling a plurality of wiring harnesses, and at least one wiring harness is electrically connected to a temperature sensor arranged on the busbar component to obtain the temperature of the battery cells through the sampling assembly. However, during use, the battery of this structure will expand and contract due to the battery cells, and the battery usage conditions are relatively complex, so that the wiring harness connected to the temperature detection component will be pulled, which makes it very easy for the wiring harness to break during use or the connection with the temperature detection component to fail, resulting in the risk of failure or damage of the sampling assembly during use, which is not conducive to improving the stability and service life of the battery.

[0097] Based on the above considerations, in order to solve the problem of poor stability and short service life of the battery, an embodiment of the present application provides a battery, which includes a battery cell and a sampling assembly. The sampling assembly includes a temperature detection component and a wiring harness assembly. The temperature detection component is configured to detect the temperature of the battery cell. The wiring harness assembly includes a wiring harness body and a connecting wire that are interconnected. The wiring harness body is used to electrically connect to the battery management system. The connecting wire is electrically connected to the temperature detection component. The connecting wire includes a conductor and an insulating shell. The insulating shell is covered on the outside of the conductor. The connecting wire is bent to form at least one curved segment and a plurality of straight segments. The curved segment connects two adjacent straight segments. The plurality of straight segments all extend along a first direction, and the plurality of straight segments are arranged side by side along a second direction. The first direction is perpendicular to the second direction. Along the second direction, the insulating shells of each two adjacent straight segments are interconnected and form a first weak structure at the connection.

[0098] In a battery of this structure, the sampling assembly is provided with a temperature detection element and a wiring harness assembly. The temperature detection element is connected to the wiring harness body of the wiring harness assembly through the connecting wire of the wiring harness assembly, so that the temperature detection element can be electrically connected to the battery management system through the wiring harness assembly, thereby enabling the sampling assembly to obtain or monitor problems with the battery cell to improve the reliability of the battery during use. The connecting wire is provided with a conductor and an insulating shell covering the outside of the conductor, and the connecting wire is bent to form at least one curved section and multiple straight sections. The multiple straight sections extend along a first direction and are arranged side by side along a second direction. By connecting the insulating shells of each two adjacent straight sections to each other and forming a first weak structure at the connection, it is convenient for the internal arrangement and installation of the battery. The matching connecting wire is beneficial to improving the regularity of the connecting wire and optimizing the layout of the connecting wire in the battery. On the other hand, when the connecting wire is pulled during use, the two adjacent straight sections can be easily peeled off from each other, so that when the connecting wire is pulled by external force, one straight section of the connecting wire has the ability to separate from the other straight section, so that the first weak structure formed between the insulating shells of the two adjacent straight sections can buffer and absorb the external force exerted on the connecting wire, so as to alleviate the phenomenon of rigid pulling of the connecting wire, thereby reducing the phenomenon of breakage or connection failure of the connecting wire during use, thereby reducing the risk of failure or damage of the sampling assembly during use, and helping to improve the stability and service life of the battery.

[0099] The batteries disclosed in the embodiments of this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the batteries disclosed in this application can be used to alleviate the problem of failure or damage to the sampling assembly in the battery during use, thereby improving the stability and service life of the battery.

[0100] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0101] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device according to an embodiment of the present application.

[0102] Please refer to Figure 1 , Figure 1A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom of the vehicle 1000, or at the head of the vehicle 1000, or at the tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may serve as an operating power source or a power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0103] In some embodiments of the present application, the battery 100 can not only serve as the operating power source or usage power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0104] Please refer to Figure 2 and Figure 3 , Figure 2 This is an exploded view of the structure of the battery 100 provided in some embodiments of the present application. Figure 3 Schematic diagram of the assembly of a battery cell pack 20 and a sampling assembly 30 according to some embodiments of the present application. The battery 100 includes a housing 10 and at least one battery cell pack 20. The battery cell pack 20 is housed within the housing 10 and includes a plurality of battery cells 21 stacked along a first direction X.

[0105] The housing 10 is used to provide an assembly space for the battery cell group 20 and can adopt a variety of structures. In some embodiments, the housing 10 can include a first housing body 11 and a second housing body 12. The first housing body 11 and the second housing body 12 overlap each other along the third direction Z, and the first housing body 11 and the second housing body 12 jointly define an assembly space for accommodating the battery cell group 20. The second housing body 12 can be a hollow structure with one end open, and the first housing body 11 can be a plate-like structure. The first housing body 11 overlaps the open side of the second housing body 12, so that the first housing body 11 and the second housing body 12 jointly define the assembly space. The first housing body 11 and the second housing body 12 can also be hollow structures with one end open, with the open side of the first housing body 11 overlapping the open side of the second housing body 12.

[0106] Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be in various shapes, such as a cylinder, a cuboid or a cube. Figure 2In the embodiment, the box body 10 is in the shape of a cuboid.

[0107] Optionally, in the battery 100, there may be one or more battery cell groups 20 housed in the housing 10. When there are multiple battery cell groups 20 housed in the housing 10, the multiple battery cell groups 20 may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple battery cell groups 20 being connected in both series and parallel. Multiple battery cell groups 20 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery cell group 20 may be housed in the housing 10.

[0108] For example, in combination Figure 2 and Figure 3 As shown, the battery 100 includes two battery cell groups 20 . The two battery cell groups 20 are arranged along the second direction Y, and the two battery cell groups 20 are connected in series.

[0109] exist Figure 3 In the embodiment, each battery cell group 20 includes a busbar 22 and a plurality of battery cells 21 stacked along a first direction X. The busbar 22 is located on one side of the plurality of battery cells 21 in a third direction Z. The busbar 22 is used to connect the plurality of battery cells 21 to achieve electrical connection between the plurality of battery cells 21. Exemplarily, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The first direction X is the thickness direction of the battery cell 21, the second direction Y is the length direction of the battery cell 21, and the third direction Z is the height direction of the battery cell 21.

[0110] Among them, reference Figure 3 , and please refer to Figure 4 , Figure 4 Schematic diagram of the assembly of battery cells 21 and busbar components 22 provided for some embodiments of the present application. Two electrode terminals 211 are provided at one end of the battery cell 21 in the third direction Z. The polarities of the two electrode terminals 211 are opposite. The two electrode terminals 211 are used to input or output the positive and negative electrodes of the battery cell 21, respectively. The busbar component 22 is interconnected with the electrode terminals 211 of the battery cell 21 to electrically connect multiple battery cells 21. It should be noted that the multiple battery cells 21 in the battery cell group 20 can be in a series or parallel structure. For example, in Figure 3 In the embodiment, the plurality of battery cells 21 in the battery cell group 20 are sequentially connected in series via a plurality of busbar members 22 .

[0111] Optionally, each battery cell 21 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 21 can be in the shape of a cuboid, a cylinder, a prism or other shapes. For example, in Figure 2 and Figure 3In the figure, the battery cell 21 is a rectangular parallelepiped structure.

[0112] In some embodiments, see Figure 2 and Figure 3 As shown, the battery 100 may further include a sampling assembly 30, which is disposed in the housing 10. The sampling assembly 30 is used to be electrically connected to the battery management system of the battery 100. The sampling assembly 30 includes a wiring harness assembly 31 and a temperature sampling assembly 32. The temperature sampling assembly 32 includes a temperature detection element 321. The temperature detection element 321 is configured to detect the temperature of the battery cell 21. The wiring harness assembly 31 is used to be electrically connected to the battery management system. The temperature detection element 321 is electrically connected to the wiring harness assembly 31 to achieve electrical connection of the temperature detection element 321 to the battery management system through the wiring harness assembly 31.

[0113] The sampling assemblies 30 are arranged in a one-to-one correspondence with the battery cell groups 20 , and each battery cell group 20 is correspondingly provided with a sampling assembly 30 .

[0114] Optionally, the sampling assembly 30 may be provided with one or more temperature sampling components 32. If the sampling assembly 30 has more than one temperature sampling component 32, the sampling assembly 30 can collect temperatures at multiple sampling points of the battery 100. For example, Figure 3 In the embodiment, the sampling assembly 30 is provided with a plurality of temperature sampling components 32 .

[0115] Exemplarily, the sampling assembly 30 is located on a side of the battery cell group 20 in the third direction Z where the busbar component 22 is provided.

[0116] In some embodiments, see Figure 2 and Figure 3 As shown, the battery 100 may further include an insulating member 40, which is disposed between the sampling assembly 30 and the plurality of battery cells 21 to insulate and isolate the sampling assembly 30 and the battery cells 21, thereby helping to reduce the risk of overlap between the sampling assembly 30 and the battery cells 21, thereby alleviating the phenomenon of internal short circuit of the battery 100 during use, thereby improving the reliability of the battery 100.

[0117] The insulating member 40 serves to insulate and isolate the battery cell 21 and the sampling assembly 30 . The insulating member 40 may be made of various materials, for example, rubber, silicone, or plastic.

[0118] Exemplarily, the busbar component 22 is arranged on the side of the insulating part 40 away from the battery cell 21, so that the busbar component 22 and the sampling assembly 30 are both located on the side of the insulating part 40 away from the battery cell 21 in the third direction Z. Correspondingly, a first avoidance hole is provided on the insulating part 40, and the first avoidance hole passes through both sides of the insulating part 40 along the third direction Z. Each first avoidance hole is used for an electrode terminal 211 of a battery cell 21 to pass through, so that the electrode terminal 211 is connected to the busbar component 22.

[0119] According to some embodiments of the present application, referring to Figure 3 and Figure 4 , and please refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , Figure 5 This is a schematic diagram of the structure of the sampling assembly 30 provided in some embodiments of the present application. Figure 6 This is a partial enlarged view of point A of the sampling assembly 30 provided in some embodiments of the present application. Figure 7 This is a schematic diagram of the assembly of the temperature sampling component 32 and the connecting line 312 provided in some embodiments of the present application. Figure 8 This is a schematic diagram of the structure of the connecting line 312 provided in some embodiments of the present application. Figure 9 A front view of the connecting line 312 in the third direction Z provided in some embodiments of the present application, Figure 10 A cross-sectional view of multiple straight sections 3124 of a connecting wire 312 provided in some embodiments of the present application. The present application provides a battery 100, comprising a battery cell 21 and a sampling assembly 30. The sampling assembly 30 comprises a temperature sensor 321 and a wiring harness assembly 31. The temperature sensor 321 is configured to detect the temperature of the battery cell 21. The wiring harness assembly 31 comprises a wiring harness body 311 and connecting wires 312 that are interconnected. The wiring harness body 311 is configured to electrically connect to a battery management system. The connecting wires 312 are electrically connected to the temperature sensor 321. The connecting wires 312 comprise a conductor 3121 and an insulating shell 3122. The insulating shell 3122 covers the outside of the conductor 3121. The connecting line 312 is bent to form at least one curved section 3123 and multiple straight sections 3124. The curved section 3123 connects two adjacent straight sections 3124. The multiple straight sections 3124 all extend along a first direction X, and the multiple straight sections 3124 are arranged side by side along a second direction Y. The first direction X is perpendicular to the second direction Y. Along the second direction Y, the insulating shells 3122 of each two adjacent straight sections 3124 are interconnected and form a first weak structure 3125 at the connection point.

[0120] The battery 100 includes a battery cell group 20, which includes a busbar 22 and multiple battery cells 21. The busbar 22 electrically connects the multiple battery cells 21. The temperature sampling assembly 32 may include a temperature detector 321 and a mounting bracket 322. The temperature detector 321 detects the temperature of the battery cells 21. The temperature detector 321 is connected via a connecting wire 312 and then electrically connected to the battery management system via the wiring harness body 311 of the wiring harness assembly 31, thereby enabling monitoring and obtaining temperature information of the battery cells 21 during use. The mounting bracket 322 is mounted on the busbar 22, and the temperature detector 321 is disposed on the mounting bracket 322, so that the mounting bracket 322 serves to assemble and secure the temperature detector 321. Of course, in other embodiments, the temperature detector 321 may also be a structure directly mounted on the busbar 22 or on the battery cells 21.

[0121] Illustratively, the temperature detecting element 321 may have various structures. For example, the temperature detecting element 321 may be an epoxy thermistor or a glass-sealed thermistor.

[0122] In the application embodiment, the wiring harness assembly 31 of the sampling assembly 30 serves to electrically connect the temperature detection component 321 of the temperature sampling assembly 32 and the battery management system. The wiring harness assembly 31 includes multiple wiring harnesses 313. One end of the wiring harness 313 is used to electrically connect to the temperature detection component 321 of the temperature sampling assembly 32, and the other end is used to electrically connect to the battery management system. The specific structure of the wiring harness assembly 31 can be found in the relevant technology and will not be repeated here.

[0123] Optionally, the connecting wire 312 and the wiring harness body 311 of the wiring harness assembly 31 can be separately arranged structures, that is, the multiple wiring harnesses 313 of the wiring harness assembly 31 constitute the wiring harness body 311 of the wiring harness assembly 31, and the connecting wire 312 of the wiring harness assembly 31 is a structure interconnected with at least one wiring harness 313 in the wiring harness body 311. Of course, the connecting wire 312 and the wiring harness body 311 of the wiring harness assembly 31 can also be an integrally formed structure, that is, the connecting wire 312 in the wiring harness assembly 31 is a part of at least one wiring harness 313 among the multiple wiring harnesses 313 of the wiring harness assembly 31, so that each wiring harness 313 includes a conductor 3121 and an insulating shell 3122. Correspondingly, the insulating shells 3122 that form another part of the connecting wire 312 in the multiple wiring harnesses 313 are interconnected to form the wiring harness body 311 of the wiring harness assembly 31.

[0124] For example, in Figure 5 and Figure 6In the figure, the connecting wire 312 and the harness body 311 of the harness assembly 31 are separately arranged structures. The multiple harnesses 313 of the harness assembly 31 form the harness body 311 of the harness assembly 31. The connecting wire 312 is connected to at least one harness 313 in the harness body 311. It should be noted that the connecting wire 312 is connected to at least one harness 313 in the harness body 311. The conductor 3121 of the connecting wire 312 is connected to at least one harness 313 in the harness body 311, and the connection structure can be various, such as soldering or resistance welding.

[0125] In the examples of this application, see Figure 8 、 Figure 9 and Figure 10 As shown, the connecting wire 312 includes a conductor 3121 and an insulating housing 3122. The insulating housing 3122 covers the outside of the conductor 3121 and serves to insulate and isolate the conductor 3121 from other components. The insulating housing 3122 can be made of a variety of materials, such as rubber, plastic, or silicone. Similarly, the conductor 3121 can also be made of a variety of materials, such as copper, aluminum, or an aluminum alloy.

[0126] It should be noted that the insulating shell 3122 of the connecting wire 312 may be covered with only one conductor 3121 or two conductors 3121. Figure 9 and Figure 10 In the figure, two conductors 3121 are enclosed in the insulating shell 3122 of the connecting wire 312, and a portion of the insulating shell 3122 is located between the two conductors 3121, so that the two conductors 3121 are insulated and isolated by the insulating shell 3122. The polarities of the two conductors 3121 are opposite, and the two conductors 3121 are respectively connected to the positive and negative poles of the temperature detection component 321.

[0127] The connecting line 312 is bent to form at least one curved section 3123 and a plurality of straight sections 3124, and the curved section 3123 connects two adjacent straight sections 3124. That is, part of the connecting line 312 is bent to form a curved section 3123 at the bent position, and a straight section 3124 is formed at the unbent position of the connecting line 312, so that the two ends of the curved section 3123 in the extension direction of the connecting line 312 are respectively connected to the two adjacent straight sections 3124, that is, in the extension direction of the connecting line 312, the curved section 3123 is connected between the two adjacent straight sections 3124.

[0128] The straight sections 3124 extend along the first direction X and are arranged side by side along the second direction Y. That is, the straight sections 3124 formed by the connecting line 312 extend along the first direction X and are arranged side by side along the second direction Y.

[0129] Along the second direction Y, the insulating shells 3122 of each two adjacent straight sections 3124 are connected to each other and form a first weak structure 3125 at the connection point, that is, the insulating shells 3122 of each two adjacent straight sections 3124 are connected to each other, and the first weak structure 3125 is formed at the connection position between the insulating shells 3122 of each two adjacent straight sections 3124, that is, the connection structure between the insulating shells 3122 of each two adjacent straight sections 3124 is a weak connection relationship, so that the first weak structure 3125 between each two adjacent straight sections 3124 is configured to be destroyed when pulled by external force, so that the two adjacent straight sections 3124 can be further peeled off.

[0130] Optionally, the first weak structure 3125 between the insulating shells 3122 of each two adjacent straight sections 3124 can be of multiple types. For example, the insulating shells 3122 of each two adjacent straight sections 3124 can be an integrally formed structure, and a weak area is formed between the insulating shells 3122 of each two adjacent straight sections 3124. The weak area is the first weak structure 3125 between each two adjacent straight sections 3124. Of course, the insulating shells 3122 of each two adjacent straight sections 3124 can also be a split structure, and the insulating shells 3122 of each two adjacent straight sections 3124 can be bonded or hot-melt connected to each other, so as to form the first weak structure 3125 at the bonding position or hot-melt connection position of the insulating shells 3122 of each two adjacent straight sections 3124.

[0131] In this embodiment, the sampling assembly 30 is provided with a temperature detection component 321 and a wiring harness assembly 31. The temperature detection component 321 is connected to the wiring harness body 311 of the wiring harness assembly 31 through the connecting wire 312 of the wiring harness assembly 31, so that the temperature detection component 321 can be electrically connected to the battery management system through the wiring harness assembly 31, so that the sampling assembly 30 can obtain or monitor problems of the battery cell 21, so as to improve the reliability of the battery 100 during use. The connecting wire 312 is provided with a conductor 3121 and an insulating shell 3122 covering the outside of the conductor 3121, and the connecting wire 312 is bent to form at least one curved section 3123 and a plurality of straight sections 3124. The plurality of straight sections 3124 extend along the first direction X and are arranged side by side along the second direction Y. By connecting the insulating shells 3122 of each adjacent two straight sections 3124 to each other and forming a first weak structure 3125 at the connection, it is convenient to detect the temperature of the battery 1 00's internal organization and assembly of the connecting wire 312 is beneficial to improving the regularity of the connecting wire 312 and optimizing the layout of the connecting wire 312 in the battery 100. On the other hand, when the connecting wire 312 is pulled during use, the two adjacent straight sections 3124 can be easily peeled off from each other, so that when the connecting wire 312 is pulled by external force, one straight section 3124 of the connecting wire 312 has the ability to separate from the other straight section 3124, so that the first weak structure 3125 formed between the insulating shells 3122 of the two adjacent straight sections 3124 can buffer and absorb the external force exerted on the connecting wire 312, so as to alleviate the phenomenon of rigid pulling of the connecting wire 312, thereby reducing the phenomenon of breakage or connection failure of the connecting wire 312 during use, thereby reducing the risk of failure or damage of the sampling assembly 30 during use, and helping to improve the stability and service life of the battery 100.

[0132] According to some embodiments of the present application, see Figure 8 、 Figure 9 and Figure 10 As shown, along the second direction Y, the insulating shells 3122 of each two adjacent straight sections 3124 define a first groove 3126 , and the bottom wall of the first groove 3126 forms a first weak structure 3125 .

[0133] In which, a first groove 3126 is jointly defined between the insulating shells 3122 of each two adjacent straight sections 3124, that is, the first groove 3126 is formed between the insulating shells 3122 of each two adjacent straight sections 3124 in the second direction Y, that is, the first groove 3126 is formed in a recessed manner at the connection between the insulating shells 3122 of each two adjacent straight sections 3124 in the second direction Y, so that the bottom part of the first groove 3126 is the first weak structure 3125 between the two straight sections 3124.

[0134] In this embodiment, a first groove 3126 is formed between the insulating shells 3122 of the two straight sections 3124 to weaken the structural strength of the position where the insulating shells 3122 of the two straight sections 3124 are connected to each other, so that the bottom wall of the first groove 3126 forms a first weak structure 3125 between the two straight sections 3124. This has a simple structure and is easy to manufacture, and facilitates the separation of the two straight sections 3124 when pulled by external force.

[0135] In some embodiments, see Figure 8 、 Figure 9 and Figure 10 As shown, each of the two adjacent straight sections 3124 has a first groove 3126 formed on both sides in the third direction Z. The two first grooves 3126 are correspondingly arranged along the third direction Z, and a first weak structure 3125 is formed between the bottom surfaces of the two first grooves 3126. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0136] Among them, each two adjacent straight sections 3124 are formed with first grooves 3126 on both sides in the third direction Z, and the two first grooves 3126 are arranged correspondingly along the third direction Z. That is, two first grooves 3126 are formed between the insulating shells 3122 of each two adjacent straight sections 3124 in the second direction Y, and the positions of the two first grooves 3126 in the third direction Z correspond, and the notches of the two first grooves 3126 are respectively located on both sides of the two straight sections 3124 in the third direction Z.

[0137] A first weak structure 3125 is formed between the bottom surfaces of the two first grooves 3126 , that is, the first weak structure 3125 between two adjacent straight sections 3124 in the second direction Y is located between the bottom surfaces of the two first grooves 3126 arranged along the third direction Z.

[0138] In this embodiment, a first groove 3126 is formed on both sides of each two adjacent straight sections 3124 in the third direction Z, and the two first grooves 3126 are arranged relatively to each other along the third direction Z to form a first weak structure 3125 between the groove bottom surfaces of the two corresponding first grooves 3126 in the third direction Z. On the one hand, this can further weaken the strength of the first weak structure 3125 so that the two adjacent straight sections 3124 can be separated when pulled by external force. On the other hand, it can reduce the processing depth of a single first groove 3126, which is beneficial to reducing the processing difficulty of the connecting line 312 of the wiring harness assembly 31.

[0139] According to some embodiments of the present application, see Figure 10As shown, the insulating housing 3122 of the plurality of straight sections 3124 is integrally formed. In other words, the insulating housing 3122 of the plurality of straight sections 3124 is formed in an integral process, and a first weak structure 3125 is formed at the connection position of the insulating housing 3122 of two adjacent straight sections 3124.

[0140] For example, the insulating housing 3122 of the plurality of straight sections 3124 may be manufactured through an integral molding process such as injection molding or extrusion molding.

[0141] In this embodiment, the insulating shells 3122 of the plurality of straight sections 3124 are arranged as an integrally formed structure, so that the first weak structure 3125 is formed at the connection position of the insulating shells 3122 of the plurality of straight sections 3124. The connecting line 312 with such a structure can reduce the difficulty of forming the first weak structure 3125 between the insulating shells 3122 of each two adjacent straight sections 3124, and can improve the forming efficiency, which is beneficial to improving the production efficiency of the sampling assembly 30.

[0142] Of course, the structure of the connecting wire 312 of the wiring harness assembly 31 of the sampling assembly 30 is not limited to this. In some embodiments, the connecting wire 312 can also be other structures. For example, the insulating shell 3122 of multiple straight sections 3124 is separately arranged, and the insulating shells 3122 of each two adjacent straight sections 3124 are adhesively connected or hot-melt connected.

[0143] It should be noted that, if the insulating shells 3122 of each two adjacent straight sections 3124 are bonded together, the adhesive used to bond the insulating shells 3122 of the two adjacent straight sections 3124 is the first weak structure 3125. For example, the insulating shells 3122 of each two adjacent straight sections 3124 can be bonded together by glue or double-sided tape; if the insulating shells 3122 of each two adjacent straight sections 3124 are hot-melt connected, the part where the insulating shells 3122 of the two straight sections 3124 are hot-melt and connected together is the first weak structure 3125.

[0144] In this embodiment, the insulating shells 3122 of the plurality of straight sections 3124 are arranged as a split structure, and the insulating shells 3122 of two adjacent straight sections 3124 are bonded or hot-melt connected, so as to form a first weak structure 3125 at the bonding position or hot-melt position of the insulating shells 3122 of the two adjacent straight sections 3124. The connecting line 312 with such a structure can be bent to form different numbers of bent sections 3123 and straight sections 3124 according to actual conditions, so as to facilitate adaptation to different batteries 100, thereby improving the scope of application of the sampling assembly 30.

[0145] According to some embodiments of the present application, see Figure 7、 Figure 8 、 Figure 9 and Figure 10 As shown, the connecting line 312 may include two conductors 3121 with opposite polarities, the two conductors 3121 being connected to the positive and negative electrodes of the temperature detecting element 321, respectively. An insulating housing 3122 covers the outside of the two conductors 3121, and a portion of the insulating housing 3122 is located between the two conductors 3121 to insulate and isolate the two conductors 3121. A second weak structure 3122a is formed in the portion of the insulating housing 3122 located between the two conductors 3121.

[0146] The connecting line 312 may include two conductors 3121 with opposite polarities, and the interior of the insulating shell 3122 of the corresponding straight section 3124 or curved section 3123 of the connecting line 312 may include two conductors 3121 .

[0147] The two conductors 3121 are respectively connected to the positive and negative electrodes of the temperature detection element 321, that is, the two conductors 3121 in the insulating shell 3122 of the same connecting line 312 are respectively connected to the positive and negative electrodes of the temperature detection element 321 to realize signal transmission of the temperature detection element 321. Figure 7 , and please refer to Figure 11 , Figure 11 Exploded diagram of the structure of the temperature sampling assembly 32 provided in some embodiments of the present application. The temperature sensing element 321 has a positive terminal 3211 and a negative terminal 3212. The two conductors 3121 of the connecting wire 312 are respectively connected to the positive terminal 3211 and the negative terminal 3212 of the temperature sensing element 321. Exemplarily, one conductor 3121 and the positive terminal 3211, and the other conductor 3121 and the negative terminal 3212 are both welded, for example, by soldering or resistance welding.

[0148] The insulating shell 3122 is covered on the outside of the two conductors 3121, and part of the insulating shell 3122 is located between the two conductors 3121. That is, the outsides of the two conductors 3121 are covered with the insulating shell 3122, and part of the insulating shell 3122 is located between the two conductors 3121, so that the two conductors 3121 are separated by the insulating shell 3122 to achieve insulation isolation of the two conductors 3121 through the insulating shell 3122.

[0149] The portion of the insulating shell 3122 located between the two conductors 3121 is formed with a second weak structure 3122a, that is, the portion of the insulating shell 3122 located between the two conductors 3121 is formed with a second weak structure 3122a with weakened structural strength, so that the second weak structure 3122a of the insulating shell 3122 between the two conductors 3121 is configured to be destroyed when pulled by external force, so that the two conductors 3121 are further peeled off.

[0150] Exemplarily, the insulating shell 3122 outside the two conductors 3121 is an integrally formed structure, and a weak area is formed on the portion of the insulating shell 3122 located between the two conductors 3121 , which is a second weak structure 3122a on the insulating shell 3122 between the two conductors 3121 .

[0151] In this embodiment, the connecting line 312 is provided with two conductors 3121, and the two conductors 3121 are respectively connected to the positive electrode and the negative electrode of the temperature detecting element 321, so as to output or input the electrical signal of the temperature detecting element 321, wherein the insulating shell 3122 of the connecting line 312 is covered on the outside of the two conductors 3121, and a portion of the insulating shell 3122 is arranged between the two conductors 3121 to achieve insulation isolation between the two conductors 3121, and a second weak structure 3122a is formed by the portion of the insulating shell 3122 located between the two conductors 3121, so that the two conductors 3121 can be pulled when the connecting line 312 is in use. 3121 can be peeled off from each other more easily, so that one conductor 3121 of the connecting wire 312 has the ability to separate from the other conductor 3121 when pulled by external force, so that the second weak structure 3122a formed by the insulating shell 3122 between the two conductors 3121 of the connecting wire 312 can buffer and absorb the external force exerted on the conductor 3121, so as to alleviate the phenomenon of rigid pulling of the conductor 3121, and thus reduce the phenomenon of breakage or connection failure of the conductor 3121 of the connecting wire 312 during use, thereby reducing the risk of failure or damage of the connecting wire 312 during use, which is beneficial to improving the stability and service life of the connecting wire 312.

[0152] In some embodiments, see Figure 8 、 Figure 9 and Figure 10 As shown, the insulating shell 3122 of the connecting wire 312 is formed with a second groove 3122b on at least one side in the third direction Z, the second groove 3122b is located between the two conductors 3121, and the bottom wall of the second groove 3122b forms a second weak structure 3122a. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0153] In which, the insulating shell 3122 of the connecting wire 312 is formed with a second groove 3122b on at least one side in the third direction Z, and the second groove 3122b is located between the two conductors 3121. That is, the portion of the insulating shell 3122 located between the two conductors 3121 is provided with a second groove 3122b on at least one side in the third direction Z, and the second groove 3122b is located between the two conductors 3121, so that the structural strength of the portion of the insulating shell 3122 located between the two conductors 3121 in the area where the second groove 3122b is provided is weakened, so that the portion of the insulating shell 3122 which is the bottom of the second groove 3122b is the second weak structure 3122a between the two conductors 3121.

[0154] In this embodiment, a second groove 3122b is provided on at least one side of the insulating shell 3122 of the connecting wire 312 in the third direction Z so that the structural strength of the portion of the insulating shell 3122 located between the two conductors 3121 is weakened, thereby allowing the bottom wall of the second groove 3122b to form a second weak structure 3122a between the two conductors 3121. This has a simple structure and is easy to manufacture, and facilitates the separation of the two conductors 3121 when pulled by an external force.

[0155] In some embodiments, see Figure 8 、 Figure 9 and Figure 10 As shown, the insulating shell 3122 of the connecting wire 312 has second grooves 3122b formed on both sides in the third direction Z. The two second grooves 3122b are correspondingly arranged along the third direction Z, and a second weak structure 3122a is formed between the bottom surfaces of the two second grooves 3122b.

[0156] Among them, the insulating shell 3122 of the connecting wire 312 is formed with second grooves 3122b on both sides in the third direction Z, and the two second grooves 3122b are arranged correspondingly along the third direction Z, that is, the part of the insulating shell 3122 located between the two conductors 3121 is formed with two second grooves 3122b, and the positions of the two second grooves 3122b in the third direction Z correspond, and the notches of the two second grooves 3122b are respectively located on both sides of the insulating shell 3122 in the third direction Z.

[0157] A second weak structure 3122a is formed between the bottom surfaces of the two second grooves 3122b. That is, in the third direction Z, the portion of the insulating shell 3122 located between the bottom surfaces of the two corresponding second grooves 3122b is the second weak structure 3122a.

[0158] In this embodiment, second grooves 3122b are provided on both sides of the insulating shell 3122 of the connecting wire 312 in the third direction Z, and the two second grooves 3122b are arranged relatively to each other along the third direction Z, so as to form a second weak structure 3122a between the groove bottom surfaces of the two corresponding second grooves 3122b in the third direction Z. On the one hand, the strength of the second weak structure 3122a can be further weakened to facilitate the separation of the two conductors 3121 when pulled by external force. On the other hand, the processing depth of a single second groove 3122b can be reduced, which is beneficial to reducing the processing difficulty of the connecting wire 312.

[0159] According to some embodiments of the present application, see Figure 3 、 Figure 5 and Figure 6 As shown, the connecting line 312 is provided separately from the wiring harness body 311 . The wiring harness body 311 includes a plurality of wiring harnesses 313 , and at least one wiring harness 313 is connected to the connecting line 312 .

[0160] Among them, the wiring harness assembly 31 is provided with multiple wiring harnesses 313, one end of the wiring harness 313 is used to be connected to the connecting wire 312, and the other end is used to be electrically connected to the battery management system, and the multiple wiring harnesses 313 together form the wiring harness body 311 of the wiring harness assembly 31. Correspondingly, the connecting wire 312 and the wiring harness body 311 are two independent components, and the connecting wire 312 is interconnected with at least one wiring harness 313 of the multiple wiring harnesses 313 forming the wiring harness body 311 to realize the electrical connection between the temperature detection component 321 and the wiring harness body 311.

[0161] Illustratively, the conductor 3121 of the connecting wire 312 and the wire harness 313 are welded to each other, which may be soldering or resistance welding.

[0162] In this embodiment, the connecting wire 312 and the wiring harness main body 311 are set as a separate structure, and the connecting wire 312 is connected to at least one of the multiple wiring harnesses 313 of the wiring harness main body 311 to realize the electrical connection between the temperature detection component 321 and the wiring harness main body 311. The wiring harness assembly 31 with such a structure can, on the one hand, reduce the difficulty of assembling the wiring harness assembly 31 and the temperature detection component 321, and on the other hand, can realize that the process of assembling the connecting wire 312 and the temperature detection component 321 with each other and the process of assembling the wiring harness main body 311 into the battery 100 do not affect each other, so that the connecting wire 312 and the temperature detection component 321 can be assembled with each other first and then assembled into the battery 100, and the connecting wire 312 and the wiring harness main body 311 of the wiring harness assembly 31 can be assembled and connected with each other, thereby optimizing the production rhythm of the battery 100 and helping to improve the assembly efficiency of the battery 100.

[0163] According to some embodiments of the present application, see Figure 6As shown, the conductor 3121 of the connecting wire 312 is welded to the wire harness 313 to form a first weld mark (not shown in the figure), and an insulating layer 314 is provided at the connection position between the connecting wire 312 and the wire harness 313, and the insulating layer 314 covers the first weld mark.

[0164] Among them, the insulating layer 314 is coated on the outer side of the first weld mark formed at the connection position of the connecting wire 312 and the wiring harness 313. The insulating layer 314 plays the role of insulating and isolating the first weld mark and other components. The structure of the insulating layer 314 can be various. For example, Figure 6 In the embodiment, the insulating layer 314 is a heat shrink tubing sleeve arranged on the outside of the first weld mark. Of course, in other embodiments, the insulating layer 314 can also be an insulating tape or an insulating film wrapped around the outside of the first weld mark. Similarly, the insulating layer 314 can also be made of a variety of materials, such as rubber, silicone or plastic.

[0165] Illustratively, the conductor 3121 of the connecting wire 312 is connected to the metal conductor of the wiring harness 313 by soldering.

[0166] In this embodiment, by coating the outer side of the first weld mark formed by interconnecting the conductor 3121 of the connecting wire 312 and the wiring harness 313 with an insulating layer 314, the insulating layer 314 can insulate and isolate the first weld mark from other components, thereby helping to reduce the risk of leakage of the sampling assembly 30 and the risk of short circuit with other components.

[0167] In some embodiments, see Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, the connecting wire 312 includes two conductors 3121 of opposite polarity, which are respectively connected to the positive and negative electrodes of the temperature detection element 321. Each conductor 3121 is welded to a wiring harness 313 to form a first weld mark, and each first weld mark is covered with an insulating layer 314. In other words, an insulating layer 314 is provided at the location where each conductor 3121 connects to a wiring harness 313, and each insulating layer 314 is covered with a first weld mark. In other words, the first weld marks and insulating layers 314 are provided in a one-to-one correspondence.

[0168] In this embodiment, the connecting line 312 includes two conductors 3121 with opposite polarities, and the two conductors 3121 are respectively welded to the two wire harnesses 313 and each forms a first weld mark. By providing an insulating layer 314 corresponding to each first weld mark, the insulating layer 314 can also insulate the first weld marks formed by the welding connection of the two conductors 3121 and the two wire harnesses 313, thereby reducing the risk of short circuit between the two conductors 3121 of the connecting line 312.

[0169] Of course, the structure of the sampling assembly 30 is not limited to this. In some embodiments, the sampling assembly 30 can also have other structures. For example, the wiring harness assembly 31 includes multiple wiring harnesses 313, and at least one wiring harness 313 is integrally formed with the connecting wire 312. In other words, the wiring harness assembly 31 is provided with multiple wiring harnesses 313, one end of which is used to connect to the connecting wire 312, and the other end is used to electrically connect to the battery management system. The connecting wire 312 is part of the wiring harness 313, and the other part of the wiring harness 313 together with the other wiring harnesses 313 form the wiring harness body 311 of the wiring harness assembly 31.

[0170] In this embodiment, the connecting line 312 and at least one of the multiple wiring harnesses 313 of the wiring harness assembly 31 are arranged as an integrally formed structure, so that a part of the wiring harness 313 forms the connecting line 312, and the other part and other wiring harnesses 313 together form the wiring harness body 311 of the wiring harness assembly 31, thereby improving the connection stability and reliability between the connecting line 312 and the wiring harness body 311, and helping to reduce the risk of connection failure between the connecting line 312 and the wiring harness body 311.

[0171] According to some embodiments of the present application, see Figure 6 、 Figure 7 、 Figure 8 and Figure 11 As shown, the sampling assembly 30 may further include a mounting bracket 322. The mounting bracket 322 defines a mounting cavity 3222 having an opening 3221. The temperature detector 321 is accommodated within the mounting cavity 3222. One end of the connecting wire 312, away from the wiring harness body 311, extends from the opening 3221 into the mounting cavity 3222 and is connected to the temperature detector 321. The other end of the connecting wire 312 is located outside the mounting cavity 3222 and is connected to the wiring harness body 311.

[0172] The structure of the mounting frame 322 disposed in the battery 100 can be various. For example, Figure 3 In the embodiment, the mounting bracket 322 is mounted on the busbar component 22 of the battery cell group 20 . Of course, in other embodiments, the mounting bracket 322 may also be mounted on the housing 212 of the battery cell 21 .

[0173] An installation cavity 3222 having an opening 3221 is formed inside the installation frame 322. That is, an installation cavity 3222 for assembling the temperature detection component 321 is formed inside the installation frame 322, and the installation cavity 3222 passes through at least one end of the installation frame 322 to form an opening 3221 on the installation frame 322, and the opening 3221 is connected to the installation cavity 3222, so that the installation frame 322 is a hollow structure with an opening 3221.

[0174] For example, in Figure 7 and Figure 11In the embodiment, the opening 3221 of the mounting cavity 3222 is formed on at least one end of the mounting frame 322 in the second direction Y, that is, the mounting cavity 3222 may be formed with an opening 3221 only at one end of the mounting frame 322 along the second direction Y, or may be formed with openings 3221 at both ends of the mounting frame 322 along the second direction Y.

[0175] Optionally, the mounting frame 322 can be made of various materials. The mounting frame 322 can be made of non-metallic materials, such as rubber, plastic or silicone. Of course, the mounting frame 322 can also be made of metal materials, such as copper, iron, aluminum or steel.

[0176] One end of the connecting wire 312 away from the wiring harness main body 311 extends from the opening 3221 into the installation cavity 3222 and is connected to the temperature detection component 321, and the other end is located outside the installation cavity 3222 and is connected to the wiring harness main body 311. That is to say, the connecting wire 312 is a structure in which part of it is located on the outside of the mounting frame 322 and one end of the connecting wire 312 extends through the opening 3221 into the installation cavity 3222 of the mounting frame 322, so that the connecting wire 312 can be connected to the temperature detection component 321 accommodated in the installation cavity 3222 of the mounting frame 322.

[0177] In this embodiment, the sampling assembly 30 of the battery 100 is further provided with a mounting bracket 322, and a mounting cavity 3222 with an opening 3221 is formed inside the mounting bracket 322, and the temperature detection component 321 is accommodated in the mounting cavity 3222 inside the mounting bracket 322, so that the mounting bracket 322 can play a certain protective role for the temperature detection component 321, so as to reduce the phenomenon of the temperature detection component 321 being damaged by bumps during use, and can reduce the difficulty of assembling the temperature detection component 321 into the interior of the battery 100.

[0178] According to some embodiments of the present application, see Figure 7 and Figure 11 As shown, the installation cavity 3222 is filled with sealant 323, and the sealant 323 covers the temperature detection element 321. In other words, the sealant 323 is filled in the installation cavity 3222, and the temperature detection element 321 disposed in the installation cavity 3222 is embedded in the sealant 323, so that the sealant 323 covers the outside of the temperature detection element 321.

[0179] Exemplarily, the sealant 323 may be made of various materials, such as epoxy resin glue, natural resin glue, etc.

[0180] In this embodiment, the mounting cavity 3222 of the mounting frame 322 is also filled with sealant 323, and the temperature detection component 321 is covered by the sealant 323. On the one hand, the stability and reliability of the temperature detection component 321 installed in the mounting cavity 3222 can be improved, and the temperature detection component 321 can be further stabilized to alleviate the phenomenon of shaking or bumping of the temperature detection component 321 in the mounting cavity 3222. On the other hand, the temperature detection component 321 can also be sealed to reduce the damage of the temperature detection component 321 after being damp, which is beneficial to improving the service life of the temperature detection component 321.

[0181] In some embodiments, the conductor 3121 of the connecting wire 312 is welded to the temperature detecting element 321 to form a second weld mark, and the sealant 323 covers the second weld mark. In other words, the second weld mark formed at the connection between the conductor 3121 of the connecting wire 312 and the temperature detecting element 321 is also embedded in the sealant 323, so that the sealant 323 covers the outside of the second weld mark formed at the connection between the conductor 3121 of the connecting wire 312 and the temperature detecting element 321.

[0182] It should be noted that in an embodiment where the connecting line 312 includes two conductors 3121 and the temperature detection element 321 includes a positive electrode terminal 3211 and a negative electrode terminal 3212, the second weld marks formed by welding the two conductors 3121 to the positive electrode terminal 3211 and the negative electrode terminal 3212 are all covered by the sealant 323.

[0183] In this embodiment, by welding the conductor 3121 of the connecting wire 312 to the temperature detecting element 321, it is beneficial to improve the connection stability and reliability between the connecting wire 312 and the temperature detecting element 321, thereby alleviating the risk of connection failure between the connecting wire 312 and the temperature detecting element 321, so as to improve the use stability of the sampling assembly 30, wherein, by setting the sealant 323 to cover the second weld mark structure formed by welding the conductor 3121 of the connecting wire 312 to the temperature detecting element 321, the sealant 323 can also play a certain protective role on the connection position of the conductor 3121 of the connecting wire 312 and the temperature detecting element 321, thereby alleviating the connection position of the conductor 3121 of the connecting wire 312 and the temperature detecting element 321 from being bumped, damaged or damp, and thus further improving the connection stability and reliability between the connecting wire 312 and the temperature detecting element 321.

[0184] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 、 Figure 6 and Figure 7 , and please refer to Figure 12 , Figure 12This figure illustrates the assembly of a busbar assembly 22 and a temperature sampling assembly 32 according to some embodiments of the present application. The battery pack 20 of the battery 100 further includes a busbar assembly 22 and a plurality of battery cells 21. The busbar assembly 22 electrically connects the plurality of battery cells 21. A mounting bracket 322 is mounted on the busbar assembly 22 and abuts against the battery cells 21.

[0185] The mounting bracket 322 abuts against the battery cell 21, so that the temperature detecting member 321 accommodated in the mounting cavity 3222 of the mounting bracket 322 can obtain the temperature of the battery cell 21 through the mounting bracket 322. It should be noted that the mounting bracket 322 and the battery cell 21 can be in a direct abutment structure, that is, the mounting bracket 322 is in direct contact with the battery cell 21. Of course, the mounting bracket 322 and the battery cell 21 can also be in an indirect abutment structure. For example, the side of the mounting bracket 322 facing the battery cell 21 in the third direction Z can be provided with a thermal pad, and the thermal pad abuts against the battery cell 21, so that the mounting bracket 322 is in indirect abutment against the battery cell 21 through the thermal pad. For example, the thermal pad can be made of silicone, silicone grease, or silicone rubber.

[0186] It should be noted that a thermal pad is provided on the side of the mounting bracket 322 facing the battery cell 21 in the third direction Z, so that the mounting bracket 322 is indirectly abutted against the battery cell 21 through the thermal pad. In this embodiment, the insulating member 40 can also be provided with a second avoidance hole at the position corresponding to the mounting bracket 322 in the third direction Z. The second avoidance hole passes through both sides of the insulating member 40 along the third direction Z, so that the insulating member 40 can avoid the mounting bracket 322, so that the mounting bracket 322 can abut against the battery cell 21 through the thermal pad.

[0187] In some embodiments, see Figure 4 As shown, the battery cell 21 may include a shell 212, an electrode assembly (not shown in the figure) and an electrode terminal 211. The electrode assembly is accommodated in the shell 212, and the electrode terminal 211 is arranged on the shell 212. The electrode terminal 211 is electrically connected to the electrode assembly, and the electrode terminal 211 is connected to the busbar component 22. The mounting frame 322 is directly or indirectly abutted against the shell 212.

[0188] Among them, the electrode terminal 211 plays the role of outputting or inputting electrical energy of the battery cell 21. The battery cell 21 includes two electrode terminals 211. The polarities of the two electrode terminals 211 are opposite, and the two electrode terminals 211 are both arranged on the wall of the outer shell 212 facing the sampling assembly 30 in the third direction Z. In the embodiment of the present application, the mounting bracket 322 is directly or indirectly abutted against the wall of the outer shell 212 on which the electrode terminal 211 is arranged in the third direction Z.

[0189] The housing 212 can also be used to accommodate an electrolyte, such as an electrolyte solution. The housing 212 can have various structural forms. The housing 212 can also be made of various materials, such as copper, iron, aluminum, steel, and aluminum alloys. In some embodiments, the housing 212 can include a shell and an end cap. The shell has a housing cavity formed therein, and the shell is a hollow structure with one end open. The end cap is sealed to the open end of the shell to form a sealed space for accommodating the electrode assembly and the electrolyte.

[0190] Optionally, the wall of the shell 212 on the side facing the sampling assembly 30 in the third direction Z can be an end cover, or it can be the bottom wall of the shell arranged opposite to the end cover in the third direction Z, that is, the electrode terminal 211 can be arranged on the end cover of the shell 212, or it can be arranged on the bottom wall of the shell arranged opposite to the end cover in the third direction Z.

[0191] It should be noted that the electrode assembly is the component within the battery cell 21 where the electrochemical reaction occurs. The electrode assembly can have various structures. For example, the electrode assembly can be a wound structure formed by winding a positive electrode sheet, a separator, and a negative electrode sheet, or a stacked structure formed by stacking a positive electrode sheet, a separator, and a negative electrode sheet. Similarly, the number of electrode assemblies housed within the housing 212 can be one or more.

[0192] Optionally, the mounting bracket 322 may be mounted on the confluence component 22 in various structures. For example, the mounting bracket 322 may be mounted on the confluence component 22 by bonding, clamping, or bolting.

[0193] In this embodiment, the battery 100 is also provided with a busbar component 22, and the busbar component 22 is electrically connected to the battery cell 21. By setting the mounting bracket 322 to be installed on the busbar component 22, and the mounting bracket 322 and the battery cell 21 are abutted against each other, the temperature detection component 321 can collect the temperature of the battery cell 21 while also playing a certain stabilizing role on the mounting bracket 322 for installing the temperature detection component 321, so as to stabilize the temperature detection component 321 and help reduce the difficulty of assembling the mounting bracket 322 for installing the temperature detection component 321 into the interior of the battery 100.

[0194] According to some embodiments of the present application, see Figure 12 As shown, the mounting bracket 322 is snap-fitted to the converging component 22. Of course, in other embodiments, the connection structure between the mounting bracket 322 and the converging component 22 may also be adhesive, bolted, or the like.

[0195] In this embodiment, by setting the mounting bracket 322 as a structure that is snap-connected to the convergence component 22, on the one hand, the difficulty of assembling the mounting bracket 322 and the convergence component 22 can be reduced, and there is no need to introduce other more complex structures or components to achieve the assembly between the mounting bracket 322 and the convergence component 22, which is beneficial to improving the assembly efficiency between the mounting bracket 322 and the convergence component 22. On the other hand, a detachable connection between the mounting bracket 322 and the convergence component 22 can be achieved, thereby facilitating the maintenance or replacement of the mounting bracket 322 and the temperature detection component 321 during later use, which is beneficial to reducing the difficulty and cost of later maintenance of the battery 100.

[0196] In some embodiments, see Figure 7 、 Figure 11 and Figure 12 As shown, the mounting frame 322 is provided with a slot 3223 , and a portion of the converging component 22 is locked in the slot 3223 .

[0197] It should be noted that, in other embodiments, the snap-fit structure between the mounting bracket 322 and the confluence component 22 may also be other structures. For example, a slot 3223 is provided on the confluence component 22 , and correspondingly, at least a portion of the mounting bracket 322 is snapped into the slot 3223 .

[0198] In this embodiment, a slot 3223 is provided on the mounting frame 322 , and a portion of the confluence component 22 is clamped in the slot 3223 , so as to achieve a clamping assembly between the mounting frame 322 and the confluence component 22 . This has a simple structure and is easy to assemble.

[0199] According to some embodiments of this application, please continue to refer to Figure 7 、 Figure 11 and Figure 12 As shown, a card slot 3223 is provided on the surface of one side of the mounting frame 322 in the first direction X, and the card slot 3223 passes through both ends of the mounting frame 322 along the second direction Y. The mounting cavity 3222 forms an opening 3221 at at least one end of the mounting frame 322 along the second direction Y.

[0200] Among them, the card slot 3223 passes through both ends of the mounting frame 322 along the second direction Y, that is, the card slot 3223 is a through slot arranged on the surface of one side of the mounting frame 322 in the first direction X and extending along the second direction Y, so that the confluence component 22 can be inserted into the card slot 3223 from the first direction X, and can also be inserted into the card slot 3223 from the second direction Y.

[0201] In this embodiment, by providing the slot 3223 on the surface of one side of the mounting frame 322 in the first direction X, and by extending the slot 3223 through both ends of the mounting frame 322 in the second direction Y, the difficulty of forming the slot 3223 on the mounting frame 322 can be reduced, thereby reducing the difficulty of manufacturing the mounting frame 322. Furthermore, the difficulty of partially engaging the confluence component 22 within the slot 3223 can be further reduced, thereby reducing the difficulty of assembling the confluence component 22 and the mounting frame 322, thereby effectively improving the production efficiency of the battery 100. Furthermore, by forming the opening 3221 of the mounting cavity 3222 at at least one end of the mounting frame 322 in the second direction Y, the interference between the opening 3221 and the slot 3223 can be reduced, and the interference between the confluence component 22 and the temperature detection member 321 can be reduced.

[0202] According to some embodiments of the present application, referring to Figure 7 、 Figure 11 and Figure 12 , and please refer to Figure 13 , Figure 13 Schematic diagram of the structure of the converging component 22 provided in some embodiments of the present application. A notch 221 is provided at one end of the converging component 22 in the second direction Y. The notch 221 extends through both sides of the converging component 22 along the third direction Z. A mounting bracket 322 is inserted into the notch 221 along the second direction Y, and a portion of the converging component 22 is retained within the retaining groove 3223. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0203] The third direction Z is also the thickness direction of the confluence component 22 , and the notch 221 penetrates both sides of the confluence component 22 along the third direction Z, that is, the notch 221 penetrates the surfaces of both sides of the confluence component 22 in the thickness direction.

[0204] Exemplarily, the notch 221 is provided at one end of the conduit component 22 in the second direction Y, and a projection of the notch 221 in the third direction Z is in a “U” shape.

[0205] The mounting frame 322 is inserted into the notch 221 along the second direction Y, and part of the confluence component 22 is stuck in the slot 3223, that is, part of the mounting frame 322 is located in the notch 221 in the third direction Z, and correspondingly, part of the area where the confluence component 22 forms the notch 221 is stuck in the slot 3223 of the mounting frame 322, that is, part of the wall surface of the notch 221 of the confluence component 22 is located in the slot 3223, and in the third direction Z, parts of the mounting frame 322 are respectively located on both sides of the confluence component 22.

[0206] In this embodiment, a notch 221 is provided at one end of the confluence component 22 in the second direction Y, and the notch 221 is a structure that passes through both sides of the confluence component 22 in the third direction Z, so that the mounting bracket 322 is inserted into the notch 221 of the confluence component 22 along the second direction Y, and at the same time, part of the confluence component 22 can also be clamped in the card slot 3223 of the mounting bracket 322, that is, it can be realized that part of the confluence component 22 is a structure that is inserted into the card slot 3223 from one end of the card slot 3223 in the second direction Y. The battery 100 adopting this structure can improve the reliability and stability of the mounting bracket 322 assembled to the confluence component 22, and the notch 221 of the confluence component 22 can also play a certain positioning and limiting role on the mounting bracket 322, which is beneficial to improving the assembly quality of the mounting bracket 322 and the confluence component 22 of the sampling assembly 30.

[0207] In some embodiments, see Figure 7 、 Figure 11 and Figure 12 As shown, the surfaces of both sides of the mounting frame 322 in the first direction X are provided with a card slot 3223 .

[0208] The mounting frame 322 is provided with slots 3223 on both sides of the surface in the first direction X, so that the two opposite walls of the notch 221 of the converging component 22 in the first direction X can be respectively locked in the two slots 3223 of the mounting frame 322 .

[0209] In this embodiment, by providing card slots 3223 on both sides of the mounting frame 322 along the first direction X, the two opposite sides of the notch 221 along the first direction X of the confluence component 22 can be respectively clamped in the two card slots 3223 on both sides of the mounting frame 322 in the first direction X, thereby further improving the reliability and stability of the mounting frame 322 of the sampling assembly 30 assembled to the confluence component 22, which is conducive to further improving the assembly quality of the mounting frame 322 of the sampling assembly 30 and the confluence component 22.

[0210] According to some embodiments of this application, please continue to refer to Figure 7 、 Figure 11 and Figure 12 As shown, a pressing portion 3224 is protruded from the bottom surface of the slot 3223 . The pressing portion 3224 is located in the notch 221 and presses against the portion of the converging component 22 stuck in the slot 3223 along the first direction X.

[0211] Among them, the pressing portion 3224 presses against the part of the confluence component 22 that is stuck in the slot 3223 along the first direction X, that is, the part of the confluence component 22 located in the slot 3223 and the pressing portion 3224 press against each other in the first direction X, so that the part of the confluence component 22 located in the slot 3223 and the pressing portion 3224 in the first direction X are an interference fit structure.

[0212] Optionally, in an embodiment where a pressing portion 3224 is provided on the bottom surface of the slot 3223, the number of the pressing portions 3224 provided on the bottom surface of the slot 3223 may be one or more. Figure 11 In the embodiment, only one pressing portion 3224 is provided on the bottom surface of the slot 3223. Of course, if multiple pressing portions 3224 are provided on the bottom surface of the slot 3223, the multiple pressing portions 3224 are arranged at intervals along the second direction Y.

[0213] In this embodiment, a pressing portion 3224 is protruded from the bottom surface of the slot 3223, and the pressing portion 3224 presses against the portion of the confluence component 22 that is stuck in the slot 3223 along the first direction X, so that the portion of the confluence component 22 that is stuck in the slot 3223 and the mounting bracket 322 can be interference fit, which is beneficial to further improve the firmness of the confluence component 22 stuck in the slot 3223 of the mounting bracket 322, so as to further improve the stability of the mounting bracket 322 of the sampling assembly 30 when assembled to the confluence component 22.

[0214] According to some embodiments of the present application, referring to Figure 7 、 Figure 11 and Figure 12 , and please refer to Figure 14 , Figure 14 for Figure 11 A partial enlarged view of a portion B of the temperature sampling assembly 32 is shown. The pressing portion 3224 has a pressing surface 3224a that presses against the converging component 22 in the first direction X. The pressing portion 3224 also has two guiding inclined surfaces 3224b, which are located on either side of the pressing surface 3224a in the second direction Y. The guiding inclined surfaces 3224b connect the pressing surface 3224a to the bottom surface of the slot 3223.

[0215] Among them, the pressing surface 3224a of the pressing portion 3224 is the surface of the pressing portion 3224 on the side away from the bottom surface of the slot 3223 in the first direction X, and the pressing surface 3224a of the pressing portion 3224 is the surface of the pressing portion 3224 that presses against the confluence component 22 in the first direction X.

[0216] The two guide slopes 3224b are respectively located on both sides of the pressing surface 3224a in the second direction Y, and the guide slopes 3224b connect the pressing surface 3224a and the bottom surface of the slot 3223. That is, one guide slope 3224b, the pressing surface 3224a and the other guide slope 3224b are arranged and connected in sequence along the second direction Y, and the end of the guide slope 3224b away from the pressing surface 3224a in the second direction Y is connected to the bottom surface of the slot 3223.

[0217] The cam 3224a is provided with a plurality of guide bevels 3224b on both sides of the cam 3224a and the guide bevels 3224b on the sides of the cam 3224b. The guide bevels 3224b are provided on both sides of the cam 3224a and the guide bevels 3224b on the sides of the cam 3224b. The guide bevels 3224b are provided on the sides of the cam 3224a and the guide bevels 3224b on the sides of the cam 3224b. The guide bevels 3224b are provided on the guide bevels 3224b to guide the cam 3222 to a certain extent during the insertion of the cam 3222 into the cam 3223.

[0218] Of course, the structure of the mounting frame 322 is not limited thereto. In some embodiments, referring to Figure 15 and Figure 16 , Figure 15 This is a schematic structural diagram of a mounting bracket 322 of a temperature sampling assembly 32 provided in some embodiments of the present application. Figure 16 The mounting bracket 322 of the temperature sampling assembly 32 provided in some other embodiments of the present application is a front view in the second direction Y. The mounting bracket 322 can also be other structures. For example, the slot 3223 has two slot side surfaces arranged opposite to each other in the third direction Z. At least one slot side surface of the slot 3223 is provided with a pressing portion 3224. Along the third direction Z, the pressing portion 3224 is located on one side of the confluence component 22, and the pressing portion 3224 presses against the portion of the confluence component 22 that is stuck in the slot 3223.

[0219] Among them, the two slot side surfaces of the slot 3223 are respectively connected to the two sides of the slot bottom surface of the slot 3223 in the third direction Z, that is, the slot bottom surface of the slot 3223 is connected to the two slot side surfaces of the slot 3223, and at least one slot side surface of the slot 3223 is convexly provided with a pressing portion 3224, that is, only one slot side surface of the slot 3223 can be provided with a pressing portion 3224, or both slot side surfaces can be provided with a pressing portion 3224.

[0220] The pressing portion 3224 presses against the portion of the confluence component 22 that is stuck in the slot 3223, that is, the portion of the confluence component 22 located in the slot 3223 and the pressing portion 3224 press against each other in the third direction Z, so that the portion of the confluence component 22 located in the slot 3223 and the pressing portion 3224 in the third direction Z are an interference fit structure.

[0221] In this embodiment, a pressing portion 3224 is protruded on at least one side surface of the slot 3223, and the pressing portion 3224 presses against one side of the confluence component 22 in the third direction Z along the third direction Z, so that the part of the confluence component 22 that is stuck in the slot 3223 and the mounting bracket 322 can be interference fit, which is beneficial to further improve the firmness of the confluence component 22 stuck in the slot 3223 of the mounting bracket 322, so as to further improve the stability of the mounting bracket 322 of the sampling assembly 30 when assembled to the confluence component 22.

[0222] In some embodiments, see Figure 15 and Figure 16 As shown, both sides of the slot 3223 are provided with pressing portions 3224. Correspondingly, the pressing portions 3224 provided on the two sides of the slot 3223 press against both sides of the portion of the converging component 22 stuck in the slot 3223 in the third direction Z.

[0223] Optionally, the pressing portion 3224 provided on each side of the slot 3223 may be one or more. For example, Figure 15 In the embodiment, two pressing portions 3224 are protruded from the side surface of each slot of the slot 3223, and the two pressing portions 3224 are arranged at intervals along the second direction Y, and the pressing portions 3224 protruded from the two slot sides of the slot 3223 are structures that are arranged one-to-one in the third direction Z. Of course, in other embodiments, the number of pressing portions 3224 protruded from the side surface of each slot of the slot 3223 can also be three, four, five or six, etc.

[0224] In this embodiment, by providing a pressing portion 3224 on both sides of the slot 3223, the part of the convergence component 22 that is stuck in the slot 3223 can be pressed against the pressing portion 3224 on both sides in the third direction Z, which is beneficial to further improve the firmness of the convergence component 22 stuck in the slot 3223 of the mounting frame 322.

[0225] According to some embodiments of the present application, the present application further provides an electrical device, which includes the battery 100 of any of the above solutions, and the battery 100 is used to provide electrical energy to the electrical device.

[0226] The power-consuming device may be any of the aforementioned devices or systems using the battery 100 .

[0227] According to some embodiments of the present application, see Figures 2 to 14As shown, the present application provides a battery 100, which includes a housing 10, multiple battery cell groups 20, multiple sampling assemblies 30, and an insulating member 40. The multiple battery cell groups 20 and the multiple sampling assemblies 30 are both disposed within the housing 10. The multiple battery cell groups 20 are arranged along a second direction Y. The multiple sampling assemblies 30 are disposed on one side of the battery cell groups 20 in a third direction Z and are spaced apart along the second direction Y. The sampling assemblies 30 correspond one to one with the battery cell groups 20. The insulating member 40 is disposed between the sampling assembly 30 and the multiple battery cells 21 in the third direction Z to insulate and isolate the sampling assembly 30 from the battery cells 21. The battery cell group 20 includes multiple busbars 22 and multiple battery cells 21. The multiple battery cells 21 are stacked in a first direction X. The busbars 22 are electrically connected to the battery cells 21 and are located on the side of the battery cells 21 facing the sampling assembly 30 in the third direction Z. The sampling assembly 30 includes a wiring harness assembly 31 and a temperature sampling assembly 32. The temperature sampling assembly 32 includes a mounting bracket 322 and a temperature sensor 321. The mounting bracket 322 is mounted on the busbar 22 and abuts against the battery cell 21. The temperature sensor 321 is disposed on the mounting bracket 322 and is configured to detect the temperature of the battery cell 21. The wiring harness assembly 31 includes a wiring harness body 311 and connecting wires 312, which are interconnected. The wiring harness body 311 is used to electrically connect to the battery management system. The connecting wires 312 are electrically connected to the temperature sensor 321. The connecting wires 312 are separate from the wiring harness body 311 and include multiple wiring harnesses 313, at least one of which is connected to the connecting wire 312. The connecting wire 312 includes a conductor 3121 and an insulating shell 3122. The insulating shell 3122 is covered on the outside of the conductor 3121. The connecting wire 312 is bent to form at least one curved section 3123 and multiple straight sections 3124. The curved section 3123 connects two adjacent straight sections 3124. The multiple straight sections 3124 all extend along a first direction X, and the multiple straight sections 3124 are arranged side by side along a second direction Y. The first direction X is perpendicular to the second direction Y. Along the second direction Y, the insulating shells 3122 of the multiple straight sections 3124 are integrally formed, and the insulating shells 3122 of each two adjacent straight sections 3124 are interconnected to form a first weak structure 3125 at the connection. Along the second direction Y, a first groove 3126 is jointly defined between the insulating shells 3122 of each two adjacent straight sections 3124, and a first groove 3126 is formed on both sides of each two adjacent straight sections 3124 in the third direction Z. The two first grooves 3126 are correspondingly arranged along the third direction Z, and a first weak structure 3125 is formed between the bottom surfaces of the two first grooves 3126. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.The connecting line 312 includes two conductors 3121 with opposite polarities, and the two conductors 3121 are respectively connected to the positive and negative poles of the temperature detection element 321. The insulating shell 3122 covers the outside of the two conductors 3121, and a portion of the insulating shell 3122 is located between the two conductors 3121 to insulate and isolate the two conductors 3121. The portion of the insulating shell 3122 located between the two conductors 3121 forms a second weak structure 3122a. The insulating shell 3122 of the connecting line 312 is formed with second grooves 3122b on both sides in the third direction Z. The two second grooves 3122b are both located between the two conductors 3121, and the two second grooves 3122b are correspondingly arranged along the third direction Z. The second weak structure 3122a is formed between the bottom surfaces of the two second grooves 3122b. The interior of the mounting frame 322 forms a mounting cavity 3222 having an opening 3221. The temperature sensor 321 is accommodated within the mounting cavity 3222. One end of the connecting wire 312, away from the wiring harness body 311, extends from the opening 3221 into the mounting cavity 3222 and is connected to the temperature sensor 321. The other end is located outside the mounting cavity 3222 and is connected to the wiring harness body 311. The mounting cavity 3222 is filled with sealant 323, which covers the temperature sensor 321. The conductor 3121 of the connecting wire 312 is welded to the temperature sensor 321, forming a second weld mark. The sealant 323 covers the second weld mark. The mounting frame 322 is engaged with the conduit component 22. The mounting frame 322 is provided with a slot 3223, and a portion of the conduit component 22 is engaged within the slot 3223. The mounting bracket 322 is provided with slots 3223 on both sides of its surface in the first direction X. The slots 3223 extend through both ends of the mounting bracket 322 along the second direction Y. The mounting cavity 3222 has an opening 3221 formed at at least one end of the mounting bracket 322 along the second direction Y. The conduit component 22 is provided with a notch 221 at one end in the second direction Y. The notch 221 extends through both sides of the conduit component 22 along the third direction Z. The mounting bracket 322 is inserted into the notch 221 along the second direction Y, and a portion of the conduit component 22 is engaged with the slots 3223. A pressing portion 3224 is convexly provided on the bottom surface of the slot 3223, and the pressing portion 3224 is located in the notch 221. The pressing portion 3224 presses against the part of the confluence component 22 that is stuck in the slot 3223 along the first direction X. The pressing portion 3224 has a pressing surface 3224a that presses against the confluence component 22 in the first direction X. The pressing portion 3224 also has two guiding inclined surfaces 3224b, which are respectively located on both sides of the pressing surface 3224a in the second direction Y, and the guiding inclined surfaces 3224b connect the pressing surface 3224a and the bottom surface of the slot 3223.

[0228] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0229] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery, characterized in that: include: Battery cells; as well as A sampling assembly, comprising a temperature detection member and a wiring harness assembly, wherein the temperature detection member is configured to detect the temperature of the battery cell, the wiring harness assembly comprises a wiring harness body and a connecting wire connected to each other, the wiring harness body is used to be electrically connected to a battery management system, the connecting wire is electrically connected to the temperature detection member, the connecting wire comprises a conductor and an insulating shell, and the insulating shell is coated on the outside of the conductor; Wherein, the connecting line is bent to form at least one bent section and multiple straight sections, the bent section connects two adjacent straight sections, the multiple straight sections all extend along a first direction, and the multiple straight sections are arranged side by side along a second direction, the first direction is perpendicular to the second direction, and along the second direction, the insulating shells of each two adjacent straight sections are connected to each other and form a first weak structure at the connection.

2. The battery according to claim 1, characterized in that Along the second direction, the insulating shells of each two adjacent straight sections define a first groove, and the bottom wall of the first groove forms the first weak structure.

3. The battery according to claim 2, characterized in that Each of the two adjacent straight sections is formed with the first groove on both sides in the third direction, the two first grooves are correspondingly arranged along the third direction, and the first weak structure is formed between the bottom surfaces of the two first grooves, and the first direction, the second direction and the third direction are perpendicular to each other.

4. The battery according to claim 1, characterized in that The insulating shell of the plurality of straight sections is integrally formed.

5. The battery according to claim 1, characterized in that The insulating shells of the plurality of straight sections are separately arranged, and the insulating shells of each two adjacent straight sections are connected by bonding or hot melting.

6. The battery according to claim 1, characterized in that The connecting line includes two conductors with opposite polarities, the two conductors are respectively connected to the positive electrode and the negative electrode of the temperature detection element, the insulating shell is coated on the outside of the two conductors, and a part of the insulating shell is located between the two conductors to insulate and isolate the two conductors; Wherein, a portion of the insulating shell located between the two conductors forms a second weak structure.

7. The battery according to claim 6, characterized in that The insulating shell of the connecting wire is formed with a second groove on at least one side in the third direction, the second groove is located between the two conductors, the bottom wall of the second groove forms the second weak structure, and the first direction, the second direction and the third direction are perpendicular to each other.

8. The battery according to claim 7, characterized in that The insulating shell of the connecting wire is formed with the second grooves on both sides of the third direction, two second grooves are correspondingly arranged along the third direction, and the second weak structure is formed between the bottom surfaces of the two second grooves.

9. The battery according to claim 1, characterized in that The connecting line is separately arranged from the wiring harness body, the wiring harness body includes a plurality of wiring harnesses, and at least one of the wiring harnesses is connected to the connecting line.

10. The battery according to claim 9, characterized in that The conductor of the connecting wire is connected to the wire harness by welding to form a first weld mark. An insulating layer is provided at the connection position between the connecting wire and the wire harness, and the insulating layer covers the first weld mark.

11. The battery according to claim 10, characterized in that The connecting line includes two conductors with opposite polarities, and the two conductors are respectively connected to the positive electrode and the negative electrode of the temperature detection element; Each of the conductors is connected to a wire harness by welding to form a first weld mark, and the outer side of each of the first weld marks is covered with an insulating layer.

12. The battery according to claim 1, characterized in that The wiring harness assembly includes a plurality of wiring harnesses, and at least one of the wiring harnesses is integrally formed with the connecting wire.

13. The battery according to any one of claims 1 to 12, characterized in that The sampling assembly also includes: A mounting frame, wherein a mounting cavity with an opening is formed inside, and the temperature detection element is accommodated in the mounting cavity; One end of the connecting wire away from the wiring harness body extends from the opening into the installation cavity and is connected to the temperature detection component, and the other end is located outside the installation cavity and is connected to the wiring harness body.

14. The battery according to claim 13, characterized in that The installation cavity is filled with sealant, and the sealant covers the temperature detection component.

15. The battery according to claim 14, characterized in that The conductor of the connecting wire is connected to the temperature detecting element by welding to form a second weld mark, and the sealant covers the second weld mark.

16. The battery according to claim 13, characterized in that The battery further includes a busbar component and a plurality of the battery cells, wherein the busbar component electrically connects the plurality of the battery cells; Wherein, the mounting frame is mounted on the current collecting component, and the mounting frame abuts against the battery cell.

17. The battery according to claim 16, characterized in that The mounting frame is clamped with the converging component.

18. The battery according to claim 17, characterized in that The mounting frame is provided with a slot, and part of the converging component is locked in the slot.

19. The battery according to claim 18, characterized in that The mounting frame is provided with the slot on a surface of one side in the first direction, the slot passes through both ends of the mounting frame along the second direction, and the mounting cavity is formed with the opening at at least one end of the mounting frame along the second direction.

20. The battery according to claim 19, characterized in that A notch is provided at one end of the confluence component in the second direction, and the notch penetrates both sides of the confluence component along the third direction. The mounting frame is inserted into the notch along the second direction, and part of the confluence component is clamped in the clamping groove. The first direction, the second direction and the third direction are perpendicular to each other.

21. The battery according to claim 20, characterized in that The surfaces of the mounting frame on both sides in the first direction are provided with the card slots.

22. The battery according to claim 20, characterized in that A pressing portion is convexly disposed on the bottom surface of the slot, the pressing portion is located in the notch, and the pressing portion presses against the portion of the flow collecting component stuck in the slot along the first direction.

23. The battery according to claim 22, characterized in that The pressing portion has a pressing surface pressing against the flow collecting component in the first direction; The pressing portion further has two guiding inclined surfaces, which are respectively located on both sides of the pressing surface in the second direction, and the guiding inclined surfaces connect the pressing surface and the bottom surface of the slot.

24. The battery according to claim 20, characterized in that The card slot has two slot side surfaces that are arranged opposite to each other in the third direction, and a pressing portion is convexly provided on at least one slot side surface of the card slot. Along the third direction, the pressing portion is located on one side of the conduit component, and the pressing portion presses against a portion of the conduit component that is stuck in the card slot.

25. The battery according to claim 24, characterized in that The pressing parts are convexly disposed on the two groove side surfaces of the clamping groove.

26. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 25, wherein the battery is used to provide electrical energy.

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