Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a battery monomer, an insulation assembly and a heat exchange assembly, the battery monomer comprises an electrode terminal, and the insulation assembly comprises an insulation support and an electric connecting piece arranged on the insulation support. The electric connecting piece is connected to the insulating bracket, and the electric connecting piece is connected to the electrode terminal, so that the two battery monomers are electrically connected. The heat exchange assembly is arranged on the side, away from the battery single bodies, of the insulation support, and heat exchange flow channels for exchanging heat with the battery single bodies and the electric connecting pieces are arranged in the heat exchange assembly. According to the technical scheme, the operation stability of the battery device can be improved.

Description

Technical Field

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

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

[0003] The development of battery technology must take into account multiple design factors at the same time. How to improve the stability of the battery cell operation process is a research direction in the battery field. Utility Model Content

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

[0005] In a first aspect, the present application provides a battery device, including a battery cell, an insulating assembly, and a heat exchange assembly. The battery cell includes an electrode terminal, and the insulating assembly includes an insulating bracket and an electrical connector provided on the insulating bracket. The electrical connector is connected to the insulating bracket, and the electrical connector is connected to the electrode terminal to electrically connect two battery cells. The heat exchange assembly is provided on a side of the insulating bracket away from the battery cell, and a heat exchange flow channel for exchanging heat with the battery cell and the electrical connector is provided in the heat exchange assembly.

[0006] In the technical solution of the embodiment of the present application, the electrode terminals provided on the battery cells are used to transmit the electric energy of the battery cells to other components, such as for charging and discharging. The electrical connectors in the insulating assembly are used to connect the battery cells so as to connect two battery cells in series or in parallel. The insulating bracket limits the electrical connector to facilitate welding and other operations on the electrical connector on the side away from the battery cells, thereby reducing the debris from the welding process falling into the gaps between the battery cells and improving the operating stability of the battery cells. In addition, a heat exchange assembly is provided for heat exchange between the battery cells and the electrical connectors, further improving the stability of the battery cell operation process.

[0007] In some embodiments, the battery device includes a housing, and the housing includes a frame and a support plate. The support plate is connected to the frame. The heat exchange assembly and the support plate are arranged opposite to each other and are respectively arranged on opposite sides of the frame, and the support plate, the frame and the heat exchange assembly are jointly enclosed to form a receiving cavity for accommodating battery cells and insulating components. In the above structure, a stable environment is provided for the battery cells by arranging the housing, thereby reducing the influence of external impurities and moisture on the battery cells. The heat exchange assembly and the support plate are arranged opposite to each other, which can not only exchange heat between the battery cells and the electrical connectors, but also provide structural support for the battery cells. The heat exchange assembly, the frame and the support plate together form a stable frame structure, which improves the stability of the overall housing structure.

[0008] In some embodiments, an insulating layer is further provided on the surface of the heat exchange assembly facing the battery cell. In the above structure, by providing an insulating layer on the heat exchange assembly, the insulation performance between the insulating assembly and the battery cell is improved.

[0009] In some embodiments, the insulating bracket is provided with a plurality of connection holes, and the connection holes are arranged along the circumference of the insulating bracket. The insulating bracket also includes a connecting piece, and the connecting piece passes through the connecting hole to connect the insulating bracket to the frame. In the above structure, the insulating bracket is stably connected to the frame by providing the connecting piece, thereby improving the connection strength and connection stability between the insulating bracket and the box.

[0010] In some embodiments, the insulating bracket includes a first connection portion and a second connection portion that are spaced apart, and two ends of the electrical connector are connected to the first connection portion and the second connection portion, respectively. In the above structure, the first connection portion and the second connection portion are spaced apart, and the electrical connector is disposed in the gap between the first connection portion and the second connection portion, so that both sides of the electrical connector can be exposed, one side surface is connected to the battery cell, and the other side surface is convenient for welding operation and connection with the heat exchange component for heat exchange.

[0011] In some embodiments, a pressure relief mechanism is provided on the battery cell, a pressure relief hole is provided at the position of the first connection portion corresponding to the pressure relief mechanism, and a gas groove is provided on the surface of the heat exchange component facing the insulating component, and the gas groove is arranged toward the pressure relief hole. In the above structure, the pressure relief hole is provided on the first connection portion, which can provide a channel for the discharge of substances inside the battery cell, and reduce the damage caused by the substances discharged from the battery cell to other battery cells. In addition, a gas groove is provided on the heat exchange component to guide and accommodate the flow direction of the substances discharged from the battery cell, which can cool the above substances on the one hand, and reduce the damage caused by these substances to other components in the battery device on the other hand.

[0012] In some embodiments, the battery device includes a battery pack, the battery pack includes a plurality of battery cells stacked along a first direction, the gas groove extends along the first direction and is connected to a plurality of pressure relief holes respectively. In the above structure, extending the gas groove along the first direction can increase the volume of the gas groove and facilitate the connection of the gas groove with the external environment. In addition, the plurality of pressure relief holes are respectively connected to the gas groove, and the gas groove can absorb the discharged substances of the plurality of pressure relief holes at the same time, further improving the operation stability of the battery device.

[0013] In some embodiments, the electrical connector includes a first connecting piece, a second connecting piece and a bent portion. The first connecting piece is connected to the electrode terminal of a battery cell, the second connecting piece is arranged on one side of the first connecting piece along the first direction, and the second connecting piece is connected to the electrode terminal of another battery cell. The bent portion is connected between the first connecting portion and the second connecting portion, and the bent portion can extend along the first direction. In the above structure, by providing the first connecting piece and the second connecting piece, the connection area between the electrical connector and the electrode terminal can be effectively increased, the flow area can be increased, and the connection stability can be improved. The bent portion is provided to extend along the first direction, and when the battery cell expands, it can be extended as the distance between the first connecting piece and the second connecting piece increases, thereby maintaining a stable connection between the first connecting piece and the second connecting piece.

[0014] In some embodiments, there are multiple battery packs, and the multiple battery packs are arranged along the second direction, and the second direction is perpendicular to the first direction. In the above structure, the energy density of the battery device can be improved by arranging multiple battery packs.

[0015] In some embodiments, there are multiple insulating components, and the multiple insulating components are arranged in sequence along the second direction, and each insulating component is arranged corresponding to a battery pack. In the above structure, the insulating component is arranged to correspond to a battery pack, which can reduce the stress during the assembly process and improve the connection stability between the electrical connector and the electrode terminal.

[0016] In some embodiments, the plurality of insulating components are integrally formed. In the above structure, the integrally formed structure can improve the assembly efficiency of the insulating components.

[0017] In some embodiments, a first protrusion is provided on a surface of the insulating bracket facing the battery cell, the first protrusion is provided corresponding to the position where the two battery packs are adjacent, and the first protrusion is connected to the two battery packs respectively. In the above structure, by providing the first protrusion, the connection strength and connection stability between the insulating component and the battery pack can be improved.

[0018] In some embodiments, a first channel is provided in the first protrusion, and a connecting belt extending along the first direction is provided in the first channel, and the connecting belt is provided corresponding to a plurality of battery cells. In the above structure, the structural strength of the first protrusion is further enhanced by providing the connecting belt, and the connection stability between the battery pack and the insulating component is improved.

[0019] In some embodiments, an adhesive layer is provided between the first protrusion and the battery pack. In the above structure, the connection strength between the first protrusion and the battery pack is improved by providing the adhesive layer.

[0020] In some embodiments, a second convex portion is provided on one side of the heat exchange component facing the insulation component, a heat exchange channel is provided in the second convex portion, and the second convex portion is provided corresponding to the electrical connector. In the above structure, the heat exchange efficiency of the electrical connector is improved by providing the second convex portion.

[0021] In some embodiments, a heat-conducting layer is provided between the second protrusion and the electrical connector. By providing the heat-conducting layer, the heat exchange efficiency between the heat exchange component and the electrical connector is further improved.

[0022] In some embodiments, the insulating bracket is provided with a receiving hole, which is used to receive the electrical component so as to exchange heat between the heat exchange assembly and the electrical component. By providing the receiving hole, the electrical component can be limited and heat exchange can be facilitated, thereby improving the heat exchange efficiency.

[0023] In a second aspect, the present application provides an electrical device, which includes the battery device in the above embodiment, and the battery device is used to provide electrical energy.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0026] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0027] Figure 2 An exploded schematic diagram of a battery device provided in some embodiments of the present application;

[0028] Figure 3 An exploded schematic diagram of a battery cell provided in some embodiments of the present application;

[0029] Figure 4A schematic diagram of the structure of an insulation component and a heat exchange component provided in some embodiments of the present application;

[0030] Figure 5 A schematic diagram of the structure of an insulation assembly provided in some embodiments of the present application;

[0031] Figure 6 A schematic diagram of the structure of an insulation assembly provided in some other embodiments of the present application;

[0032] Figure 7 for Figure 5 The structural diagram of part A in the figure;

[0033] Figure 8 for Figure 4 The structural diagram of part B;

[0034] Fig. 9 A schematic diagram of the structure of a heat exchange assembly provided in some embodiments of the present application;

[0035] Fig.10 A schematic diagram of the structure of a heat exchange assembly provided in some other embodiments of the present application.

[0036] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0037] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 5a. First box part; 5b. Second box part; 5c. Accommodation space; 501. Frame; 502. Support plate; 6. Battery cell; 10. Electrode assembly; 20. Shell; 24. Pressure relief mechanism; 25. Electrode terminal; 30. End cover; 40. Shell; 7. Insulation assembly; 701. Insulation bracket; 702. Electrical connector; 703. Insulation layer; 704. Connection hole; 705. First connection part; 706. Second connection part; 707. Insulation frame; 708. Pressure relief hole; 709. First connection piece; 710. Second connection piece; 711. Bend; 712. First convex part; 713. Connection belt; 714. Accommodation hole; 8. Heat exchange assembly; 801. Gas groove; 802. Second convex part; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

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

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

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

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

[0044] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

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

[0046] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0048] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0052] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0053] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0056] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-95°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0057] The term “plurality” used in this application refers to two or more (including two).

[0058] 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.

[0059] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0060] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, which is arranged between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and released back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0061] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0062] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0063] In some embodiments, the negative electrode may be a foam metal. The foam metal may be foam nickel, foam copper, foam aluminum, foam alloy, or foam carbon, etc. When the foam metal is used as the negative electrode sheet, the surface of the foam metal may not be provided with a negative electrode active material, but of course, a negative electrode active material may also be provided.

[0064] As an example, a negative electrode active material may be filled and / or deposited in the negative electrode current collector.

[0065] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0066] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0067] In some embodiments, the separator is a separator. The present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.

[0068] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be coated on the surface of the separator.

[0069] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0070] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0071] The liquid electrolyte includes an electrolyte salt and a solvent.

[0072] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0073] The electrode assembly may be a wound structure, a laminated structure, or a mixed structure of a wound structure and a laminated structure.

[0074] 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.

[0075] In some embodiments, the electrode assembly is a laminate structure.

[0076] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets may be provided respectively, and the plurality of positive electrode sheets and the plurality of negative electrode sheets may be alternately stacked.

[0077] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0078] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded sections that are stacked.

[0079] As an example, a plurality of separators may be provided, each of which is provided between any adjacent positive electrode sheets or negative electrode sheets.

[0080] As an example, the separator may be disposed continuously, and may be disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0081] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0082] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0083] In some embodiments, the battery cell may include a housing, which may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0084] In some embodiments, the housing may be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing plays a role in protecting the electrode assembly, and a sealed bag is also included between the housing and the electrode assembly, and the sealed bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealed bag may be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0085] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0086] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap is provided to cover the opening. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0087] In some embodiments, at least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab. The electrode terminal may be directly connected to the electrode tab, or may be indirectly connected to the electrode tab through a current collecting member. The electrode terminal may be disposed on an end cap, or may be disposed on the housing.

[0088] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0089] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0090] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0091] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0092] 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.

[0093] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0094] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0095] In a battery device, battery cells are connected in series or in parallel through electrical connectors. The electrical connectors are connected to the electrode terminals of the battery cells by welding. Direct welding of the electrical connectors on the side facing the battery cells will cause welding debris to fall between the battery cells, forming a short circuit.

[0096] In view of this, an embodiment of the present application provides a battery device, in which the electrode terminals provided on the battery cells are used to transmit the electric energy of the battery cells to other components, such as for charging and discharging. The electrical connector in the insulating assembly is used to connect the battery cells so as to connect two battery cells in series or in parallel. The insulating bracket limits the electrical connector to facilitate welding and other operations on the electrical connector on the side away from the battery cells, thereby reducing the debris from the welding process falling into the gaps between the battery cells and improving the operating stability of the battery cells. In addition, a heat exchange assembly is provided for heat exchange between the battery cells and the electrical connector, further improving the stability of the battery cell operation process.

[0097] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0098] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0099] As shown in FIG1 , a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0100] The vehicle 1 may further include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the power requirements of starting, navigating and driving the vehicle 1.

[0101] In some embodiments of the present application, the battery device 2 can not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0102] Figure 2 Schematic diagram of an explosion of a battery device provided in some embodiments of the present application. Figure 2 As shown, the battery device 2 includes a housing 5 and a battery cell 6, and the battery cell 6 is accommodated in the housing 5. The battery cell 6 may be the smallest unit constituting the battery device 2.

[0103] The box 5 is used to accommodate the battery cell 6, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 5a and a second box portion 5b, the first box portion 5a and the second box portion 5b cover each other, and the first box portion 5a and the second box portion 5b together define a storage space 5c for accommodating the battery cell 6. The second box portion 5b can be a hollow structure with one end open, the first box portion 5a is a plate-shaped structure, and the first box portion 5a covers the open side of the second box portion 5b to form a box 5 with a storage space 5c; the first box portion 5a and the second box portion 5b can also be hollow structures with one side open, and the open side of the first box portion 5a covers the open side of the second box portion 5b to form a box 5 with a storage space 5c. Of course, the first box portion 5a and the second box portion 5b can be of various shapes, such as a cylinder, a cuboid, etc.

[0104] Exemplarily, the first housing portion 5a includes an insulation component and a heat exchange component.

[0105] In order to improve the sealing performance after the first box body part 5a and the second box body part 5b are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body part 5a and the second box body part 5b.

[0106] Assuming that the first box body portion 5a covers the top of the second box body portion 5b, the first box body portion 5a can also be called an upper box cover, and the second box body portion 5b can also be called a lower box.

[0107] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are connected in series and in parallel.

[0108] Multiple battery cells 6 can be directly connected in series, parallel or mixed together, and then the whole formed by the multiple battery cells 6 can be accommodated in the box 5; of course, multiple battery cells 6 can also be first connected in series, parallel or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel or mixed to form a whole and accommodated in the box 5.

[0109] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0110] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 accommodated in the housing 40 .

[0111] The electrode assembly 10 includes a positive electrode and a negative electrode. During the charge and discharge process of the battery cell 6, active ions (such as lithium ions) are inserted and removed back and forth between the positive electrode and the negative electrode. Optionally, the electrode assembly 10 also includes a separator disposed between the positive electrode and the negative electrode, which can reduce the risk of short circuit between the positive and negative electrodes while allowing active ions to pass through.

[0112] The housing 40 is used to encapsulate the electrode assembly 10 and the electrolyte and other components. The housing 40 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40 ), or an aluminum-plastic film.

[0113] In some embodiments, the housing 40 includes a shell 20 and an end cover 30 . The shell 20 has an opening, and the end cover 30 is used to cover the opening.

[0114] In some embodiments, the battery cell 6 further includes an electrolyte contained in the housing 40. The electrolyte plays a role in conducting ions between the positive and negative electrodes and can be in liquid, gel or solid state.

[0115] In some embodiments, the battery cell 6 includes an electrode terminal 25 . The electrode terminal 25 is electrically connected to the electrode assembly 10 to output or input electrical energy of the battery cell 6 .

[0116] Please refer to Figures 2 to 5 , Figure 2An exploded schematic diagram of a battery device provided in some embodiments of the present application, Figure 3 Schematic diagram of an explosion of a battery cell provided in some embodiments of the present application, Figure 4 A schematic diagram of the structure of an insulation component and a heat exchange component provided in some embodiments of the present application, Figure 5 A schematic diagram of the structure of an insulation assembly provided in some embodiments of the present application.

[0117] As shown in the figure, an embodiment of the present application provides a battery device 2, including a battery cell 6, an insulating assembly 7 and a heat exchange assembly 8. The battery cell 6 includes an electrode terminal 25. The insulating assembly 7 includes an insulating bracket 701 and an electrical connector 702 disposed on the insulating bracket 701. The electrical connector 702 is connected to the insulating bracket 701, and the electrical connector 702 is connected to the electrode terminal 25 to electrically connect two battery cells 6. The heat exchange assembly 8 is disposed on a side of the insulating bracket 701 away from the battery cell 6, and a heat exchange flow channel for exchanging heat with the battery cell 6 and the electrical connector 702 is disposed in the heat exchange assembly 8.

[0118] The insulating bracket 701 refers to an insulating member made of insulating material and having a certain structural strength. For example, it can be made of materials such as polytetrafluoroethylene and rubber. For example, the insulating bracket 701 includes an insulating plate connected to the box body 5, and the insulating plate and the electrical connector 702 are integrally injection molded. A through hole is provided on the insulating plate at a position corresponding to the electrode terminal 25 to expose the electrical connector 702, so as to facilitate the connection between the electrical connector 702 and the electrode terminal 25.

[0119] The electrical connector 702 can be connected to the electrode terminals 25 of two adjacent battery cells 6 respectively to electrically connect the two battery cells 6. The electrical connector 702 and the electrode terminals 25 can be connected by ultrasonic welding or laser welding.

[0120] The heat exchange assembly 8 includes opposite heat exchange plates, with a heat exchange channel formed between the two heat exchange plates to perform heat exchange on the battery cells 6 .

[0121] In the technical solution of the embodiment of the present application, the electrode terminal 25 provided on the battery cell 6 is used to transmit the electric energy of the battery cell 6 to other components, such as for charging and discharging. The electrical connector 702 in the insulating assembly 7 is used to connect the battery cell 6 to connect two battery cells 6 in series or in parallel. The insulating bracket 701 limits the electrical connection piece to facilitate welding and other operations on the electrical connection piece on the side away from the battery cell 6, thereby reducing the debris from the welding process falling into the gap between the battery cells 6, and reducing the risk of the insulating parts on the surface of the battery cell 6 being damaged by the debris, so as to improve the operating stability of the battery cell 6. In addition, a heat exchange assembly 8 is provided for heat exchange between the battery cell 6 and the electrical connector 702, which further improves the stability of the battery cell 6 during operation.

[0122] In some embodiments of the present application, the battery device 2 includes a box 5, and the box 5 includes a frame 501 and a support plate 502. The support plate 502 is connected to the frame 501. The heat exchange component 8 is arranged opposite to the support plate 502 and is respectively arranged on two opposite sides of the frame 501. The support plate 502, the frame 501 and the heat exchange component 8 are enclosed together to form a receiving cavity for accommodating the battery cell 6 and the insulating component 7. Optionally, the heat exchange component 8 is also a part of the box 5. The box 5 includes the heat exchange component 8, the frame 501 and the support plate 502.

[0123] The box body 5 provides a closed and stable environment for the battery cell 6. This design helps to reduce the intrusion of external impurities (such as dust, metal debris, etc.) and moisture into the battery cell 6, thereby extending the service life of the battery device 2 and maintaining its stable performance.

[0124] The heat exchange assembly 8 is not only responsible for the thermal management of the battery cell 6, that is, dissipating heat or heating to keep the battery device 2 within the optimal operating temperature range, but also plays a role in structural support. Therefore, it is possible to replace the original support plate 502 and directly set it as the heat exchange assembly 8, reducing the number of components and improving the integration of the battery device 2.

[0125] The receiving cavity formed by the support plate 502, the frame 501 and the heat exchange assembly 8 provides a safe storage space for the battery cells 6 and the insulation assembly 7. The addition of the insulation assembly 7 further enhances the safety of the battery pack and prevents safety problems caused by electrical faults such as short circuits.

[0126] Optionally, a heat exchange channel may also be provided in the support plate 502 to form another component similar to the heat exchange assembly 8 , so as to further improve the heat exchange efficiency of the battery device 2 .

[0127] The combination of the heat exchange assembly 8, the frame 501 and the support plate 502 forms a high-strength frame structure. This design improves the overall rigidity and stability of the box 5, helps to resist vibration and impact during transportation and use, and protects the battery cells 6 from damage.

[0128] By integrating the heat exchange component 8 and the structural support function, the design achieves maximum utilization of the function, reduces the use of unnecessary components and materials, reduces production costs, and improves the overall performance and reliability of the product.

[0129] In some embodiments of the present application, an insulating layer 703 is further provided on the surface of the heat exchange assembly 8 facing the battery cell 6 .

[0130] In the above structure, by providing the insulating layer 703 on the heat exchange assembly 8, the creepage distance between the heat exchange assembly 8 and the battery cell 6 is increased, and the insulation performance between the insulating assembly 7 and the battery cell 6 is improved.

[0131] In some embodiments of the present application, the insulating bracket 701 is provided with a plurality of connection holes 704, which are arranged along the circumference of the insulating bracket 701. The insulating bracket 701 also includes a connector, which passes through the connection holes 704 to connect the insulating bracket 701 to the frame 501. Exemplarily, the connection holes 704 are threaded holes, and the connectors are connection bolts.

[0132] By using a combination of multiple connection holes 704 and connectors, the connection between the insulating bracket 701 and the frame 501 becomes more secure. This multi-point fixing method can effectively resist forces and vibrations from all directions, ensuring the stability and safety of the battery device 2 during transportation, installation and use. The connection holes 704 arranged along the circumference of the insulating bracket 701 allow the connector to be fixed at multiple positions, so that the layout of the connection points can be flexibly adjusted according to actual needs.

[0133] In the above structure, the insulating bracket 701 is stably connected to the frame 501 by providing a connecting piece, thereby improving the connection strength and connection stability between the insulating bracket 701 and the box 5 .

[0134] like Figure 5 as well as Figure 7 As shown, in some embodiments of the present application, the insulating bracket 701 includes a first connecting portion 705 and a second connecting portion 706 that are spaced apart, and two ends of the electrical connector 702 are respectively connected to the first connecting portion 705 and the second connecting portion 706 .

[0135] Exemplarily, the insulating assembly further includes an insulating frame 707 disposed along the circumference of the frame body 501 , and the first connecting portion 705 and the second connecting portion 706 are strip-shaped insulating members. Both ends of the first connecting portion 705 are connected to the insulating frame 707 , and both ends of the second connecting portion 706 are connected to the insulating frame 707 .

[0136] By spacing the first connection portion 705 and the second connection portion 706 and arranging the electrical connector 702 in the gap, limited space can be effectively utilized. This layout makes the internal structure of the battery device 2 more compact, which helps to improve the overall space utilization.

[0137] One side surface of the electrical connector 702 is connected to the electrode terminal 25 of the battery cell 6, while the other side surface is exposed to facilitate welding operations and connection with the heat exchange component 8. The surface of the electrical connector 702 is exposed, which means that the surface of the electrical connector 702 is not covered by the insulating component 7, so that it can be directly connected or attached to other components to achieve connection or heat exchange.

[0138] The above structure makes the welding and connection process more intuitive and convenient, reducing the difficulty of operation and the error rate. Since the other side surface of the electrical connector 702 is exposed, it can more effectively exchange heat with the heat exchange component 8. This layout helps to dissipate heat and keep the temperature of the battery device 2 stable during operation, thereby improving the performance and service life of the battery device 2.

[0139] The first connection portion 705 and the second connection portion 706 disposed at intervals in the insulating bracket 701 provide stable support for the electrical connector 702 and ensure electrical isolation. This design helps prevent safety issues caused by improper electrical connection or short circuit.

[0140] In the above structure, the insulating bracket 701 adopts a first connecting part 705 and a second connecting part 706 that are spaced apart, and the electrical connector 702 is arranged in the gap therebetween. This structural layout has good effects in optimizing space utilization, facilitating welding and connection operations, enhancing heat dissipation, improving electrical safety, and adapting to a variety of application scenarios.

[0141] like Figure 3 as well as Figure 7 As shown, in some embodiments of the present application, a pressure relief mechanism 24 is provided on the battery cell 6, a pressure relief hole 708 is provided at a position of the first connection portion 705 corresponding to the pressure relief mechanism 24, and a gas groove 801 is provided on the surface of the heat exchange component 8 facing the insulating component 7, and the gas groove 801 is arranged toward the pressure relief hole 708. The gas groove 801 refers to the concave surface of the heat exchange component 8 to form a space for gas accommodation.

[0142] Exemplarily, the shape of the pressure relief hole 708 is set corresponding to the shape of the pressure relief mechanism 24. The gas groove 801 is a concave gas channel set on the surface of the heat exchange component 8. The gas groove 801 extends all the way to the edge of the heat exchange component 8 to form a pressure relief port to guide the material to be discharged outside the box 5.

[0143] The pressure relief mechanism 24 provided on the battery cell 6 is to release the internal substances (such as gas, electrolyte, etc.) in time when the internal pressure of the battery increases abnormally, so as to reduce the risk of explosion or serious damage of the battery device 2. The pressure relief hole 708 provided at the position of the first connection part 705 corresponding to the pressure relief mechanism 24 provides a safe and orderly channel for the release of the internal substances of the battery cell 6. This helps to reduce the risk of the substances released from the battery cell 6 causing damage to other battery cells 6 or other components in the battery device 2.

[0144] The gas groove 801 provided on the heat exchange component 8 is arranged toward the pressure relief hole 708, and its main function is to guide and contain the substances released from the pressure relief hole 708. The design of the gas groove 801 can ensure that the released substances are controlled during the flow process, avoid disorderly diffusion and direct contact with other components, thereby reducing potential damage to other components in the battery device 2.

[0145] The gas groove 801 not only guides the discharged substances, but also cools the discharged substances. Since the heat exchange component 8 usually has a heat dissipation function, when the discharged substances flow through the gas groove 801, they will be cooled to a certain extent, thereby reducing their temperature and potential danger.

[0146] In addition, the containment function of the gas groove 801 also helps to reduce the impact and corrosion of the leaked substances on other components in the battery device 2, further protecting the overall structure and performance of the battery device 2.

[0147] In the above structure, a pressure relief hole 708 is provided on the first connection portion 705, which can provide a channel for the discharge of the internal substances of the battery cell 6, and reduce the damage caused by the substances discharged from the battery cell 6 to other battery cells 6. In addition, a gas groove 801 is provided on the heat exchange component 8 to guide and accommodate the flow direction of the substances discharged from the battery cell 6, on the one hand to cool the above substances, and on the other hand to reduce the damage caused by these substances to other components in the battery device 2.

[0148] like Figure 4 , Figure 8 as well as Fig. 9 As shown, in some embodiments of the present application, the battery device 2 includes a battery pack, the battery pack includes a plurality of battery cells 6 stacked along a first direction X, the gas groove 801 extends along the first direction X, and is respectively connected to the plurality of pressure relief holes 708. Exemplarily, the first direction X is the thickness direction of the battery cell 6.

[0149] In the battery pack, two adjacent battery cells 6 are connected in series or in parallel via the electrical connector 702 , and the first direction X may be the thickness direction of the battery cell 6 . The pressure relief holes 708 of the plurality of battery cells 6 are also arranged along the first direction X at intervals.

[0150] The gas groove 801 is extended along the first direction X, which increases the total volume of the gas groove 801. The increased volume enables the gas groove 801 to accommodate more discharged substances (such as gas, electrolyte, etc.), reducing the risk of disorderly diffusion of these substances inside the battery device 2. Optionally, the heat exchange component 8 is provided with an exhaust port connected to the outside, and the gas groove 801 is connected to the exhaust port to discharge the substances discharged from the battery cell 6 in time, thereby reducing damage to other battery cells 6 in the battery device 2.

[0151] The extended gas groove 801 is more likely to form an effective communication channel with the external environment, which helps to speed up the discharge of the leaked material. By reasonably designing the exhaust port position and size of the gas groove 801, it can be ensured that the leaked material will not be excessively obstructed during the discharge process, thereby further improving the safety of the battery device 2.

[0152] The multiple pressure relief holes 708 are respectively connected to the gas groove 801, and each battery cell 6 in the battery pack can release internal substances into the gas groove 801 through the pressure relief hole 708 when needed. The gas groove 801 can absorb and process the released substances from the multiple pressure relief holes 708 at the same time, thereby improving the response speed and efficiency of the battery device 2 to the internal pressure change.

[0153] By effectively managing and absorbing the leaked substances, the gas groove 801 helps to reduce the internal pressure of the battery device 2 under abnormal conditions and prevent the battery cell 6 from being damaged due to excessive pressure. At the same time, since the leaked substances are processed and discharged in a timely manner, the overall operating stability of the battery device 2 is improved, which helps to extend the service life and performance of the battery device 2.

[0154] In some embodiments of the present application, the electrical connector 702 includes a first connecting piece 709, a second connecting piece 710, and a bent portion 711. The first connecting piece 709 is connected to the electrode terminal 25 of one of the battery cells 6, the second connecting piece 710 is provided on one side of the first connecting portion 705 along the first direction X, and the second connecting portion 706 is connected to the electrode terminal 25 of another battery cell 6. The bent portion 711 is connected between the first connecting portion 705 and the second connecting portion 706, and the bent portion 711 can extend along the first direction X. Exemplarily, the bent portion 711 can be a folded shape formed by bending a metal sheet, or a concave-convex structure on the surface formed by stamping or the like, and the bent structure can extend without breaking when receiving a tensile force.

[0155] The first connecting piece 709 is directly connected to the electrode terminal 25 of one of the battery cells 6, and the second connecting piece 710 is simultaneously connected to the electrode terminal 25 of the other battery cell 6. This design effectively increases the connection area between the electrical connector 702 and the electrode terminal 25, thereby increasing the flow area. A larger connection area and flow area can reduce the resistance and heat generation during the current transmission process, and improve the overall efficiency and stability of the battery device 2.

[0156] The increased connection area not only helps to reduce resistance, but also improves the mechanical stability of the connection. During the operation of the battery device 2, the battery cells 6 may expand or contract slightly due to factors such as temperature changes, charge and discharge cycles, etc. By using a large area of ​​the first connecting sheet 709 and the second connecting sheet 710, the influence of these changes on the connection stability can be more effectively resisted, ensuring a stable connection between the battery cells 6.

[0157] The bend 711 is connected between the first connecting piece 709 and the second connecting piece 710, and extends along the stacking direction of the battery cell 6 (the first direction X). This allows the bend 711 to be extended accordingly as the distance between the first connecting piece 709 and the second connecting piece 710 increases when the battery cell 6 expands, without breaking. This adaptive design helps to maintain a stable connection between the first connecting piece 709 and the second connecting piece 710, ensuring the normal transmission of current even when the battery cell 6 expands. The presence of the bend 711 also enhances the overall structural flexibility of the electrical connector 702. It allows the electrical connector 702 to adapt to slight position changes between the battery cells 6 to a certain extent, thereby reducing connection problems caused by installation errors or inconsistent sizes of the battery cells 6.

[0158] In some embodiments of the present application, there are multiple battery packs, and the multiple battery packs are arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X. Exemplarily, the second direction Y may be the width direction of the battery cell 6 .

[0159] Compared with a single battery pack or simply stacked battery cells 6, the above structural layout can reduce space waste and improve overall space utilization. Multiple battery packs are arranged along the second direction Y, which can also provide more flexibility for heat dissipation design. Exemplarily, heat dissipation channels, heat sinks and other structures can be arranged between or around the battery packs to more effectively dissipate the heat generated by the battery cells 6 during the charging and discharging process. In the above structure, the energy density of the battery device 2 can be improved by arranging multiple battery packs.

[0160] In some embodiments of the present application, there are multiple insulating components 7, and the multiple insulating components 7 are arranged in sequence along the second direction Y, and each insulating component 7 is arranged corresponding to a battery pack.

[0161] Setting the insulating assembly 7 to correspond to a battery pack structure can reduce stress during assembly and improve the connection stability between the electrical connector 702 and the electrode terminal 25. In the case of multiple battery packs, the battery pack in the middle is far away from the frame, and the insulating assembly 7 is connected to the box 5 through the frame, so the fit between the electrical connection piece in the middle insulating assembly 7 and the electrode terminal 25 is reduced. Therefore, multiple insulating assemblies 7 can be set in sections to improve the connection stability between the electrical connection piece and the electrode terminal 25.

[0162] The corresponding arrangement of the insulating assembly 7 and the battery pack also enhances the structural stability of the entire battery device 2. This stability helps to reduce the stress generated by factors such as vibration and impact during the operation of the battery device 2.

[0163] In some embodiments of the present application, multiple insulating components 7 are integrally formed. Integrally formed means that the material can complete the entire molding process through a single processing without the need for secondary or multiple processing. Exemplarily, the electrical connector can be first fixed in a mold, and then the insulating component 7 can be manufactured using a process such as injection molding, hot pressing molding, etc. in conjunction with the mold. In the above structure, the integrally formed structure can improve the assembly efficiency and assembly position accuracy of the insulating component 7.

[0164] like Figure 6 As shown, in some embodiments of the present application, a first protrusion 712 is provided on a surface of the insulating bracket 701 facing the battery cell 6, the first protrusion 712 is arranged corresponding to the position where two battery packs are adjacent, and the first protrusion 712 is connected to the two battery packs respectively.

[0165] Exemplarily, the first protrusion 712 is provided at the shoulders of the two battery packs, and abuts against the two battery packs at the same time. The first protrusion 712 may be a strip-shaped structure protruding along the surface of the second connecting portion 706. The first protrusion 712 and the second connecting portion 706 may be connected by bonding, welding, etc. Alternatively, the first protrusion 712 and the second connecting portion 706 are an integrally formed structure. The first protrusion 712 may extend along the first direction X to match the setting direction of the battery pack.

[0166] The first protrusion 712 is also helpful to improve the connection stability between the insulating bracket 701 and the battery pack. By closely fitting and firmly connecting with the battery pack, the first protrusion 712 can limit the displacement or deformation of the battery pack caused by expansion or contraction during the charging and discharging process within a certain range.

[0167] In the above structure, by providing the first protrusion 712 , the connection strength and connection stability between the insulating assembly 7 and the battery pack can be improved.

[0168] In some embodiments of the present application, a first channel is disposed in the first protrusion 712 , and a connecting strip 713 extending along the first direction X is disposed in the first channel. The connecting strip 713 is disposed corresponding to the plurality of battery cells 6 .

[0169] Exemplarily, the connection belt 713 is a steel belt to provide a higher connection strength. The connection belt 713 can be set at a predetermined position in the mold by injection molding, and then the insulating material is injected to form. Alternatively, the steel belt can be directly inserted into the first channel for connection.

[0170] The connection strips 713 are arranged corresponding to the plurality of battery cells 6, and the connection stability between the insulating bracket 701 and the battery pack is improved by increasing the contact area and connection points with the battery pack. This stability helps prevent displacement or deformation of the battery pack due to expansion or contraction during the charge and discharge process, thereby maintaining the overall performance and safety of the battery device 2.

[0171] In the above structure, by providing the connecting strip 713 , the structural strength of the first protrusion 712 is further enhanced, and the connection stability between the battery pack and the insulating assembly 7 is improved.

[0172] In some embodiments of the present application, an adhesive layer is provided between the first protrusion 712 and the battery pack.

[0173] For example, the adhesive layer can be made of a material having excellent adhesive properties, chemical corrosion resistance, and high temperature resistance, such as epoxy resin, polyurethane, acrylic acid, and the like.

[0174] The adhesive layer tightly connects the first protrusion 712 to the battery pack through chemical bonding or physical adsorption. This connection method can provide a higher connection strength than a mechanical connection, especially under dynamic loads such as vibration and impact, it can better maintain the stability and reliability of the connection. The use of an adhesive layer can simplify the assembly process because additional mechanical connectors (such as screws, nuts, etc.) are no longer required, which reduces weight and improves energy density.

[0175] In the above structure, the connection strength between the first protrusion 712 and the battery pack is improved by providing the adhesive layer.

[0176] In some embodiments of the present application, a second convex portion 802 is provided on one side of the heat exchange component 8 facing the insulation component 7, a heat exchange channel is provided in the second convex portion 802, and the second convex portion 802 is provided corresponding to the electrical connector 702. Exemplarily, the second convex portion 802 is a strip structure extending along the first direction X.

[0177] The second convex portion 802 is arranged to protrude, which can facilitate the contact and heat exchange between the heat exchange component 8 and the electrical connector 702. The arrangement of the second convex portion 802 increases the contact area between the heat exchange component 8 and the electrical connector 702, thereby improving the heat exchange efficiency. A larger contact area means that more heat can be transferred from the electrical connector 702 to the heat exchange component 8 in a shorter time. In the above structure, by arranging the second convex portion 802, the heat exchange efficiency of the electrical connector 702 is improved.

[0178] In some embodiments of the present application, a heat-conducting layer is provided between the second protrusion 802 and the electrical connector 702. Exemplarily, the material of the heat-conducting layer should have high thermal conductivity, good mechanical properties and chemical stability. The heat-conducting material can be metal (such as copper, aluminum, silver, etc.), heat-conducting polymer and heat-conducting glue, etc., or a composite structure of the above materials.

[0179] The main function of the heat conductive layer is to accelerate the process of heat transfer from the electrical connector 702 to the heat exchange component 8 through the second protrusion 802. It can significantly reduce the thermal resistance in the heat transfer process, so that heat can be transferred more quickly and efficiently. The heat conductive layer can ensure that the heat is evenly distributed between the electrical connector 702 and the second protrusion 802, avoiding local overheating or uneven temperature. In addition to improving the efficiency of heat conduction, the heat conductive layer can also enhance the structural connection between the second protrusion 802 and the electrical connector 702 to a certain extent. This helps to prevent loosening or damage caused by external factors such as vibration and impact, thereby improving the overall durability of the system. By setting the heat conductive layer, the heat exchange efficiency between the heat exchange component 8 and the electrical connector 702 is further improved.

[0180] In some embodiments of the present application, the insulating bracket 701 is provided with a receiving hole 714, which is used to receive electrical components to exchange heat between the heat exchange assembly 8 and the electrical components. Exemplarily, the electrical components include a high-voltage box, a sensor, a relay, etc. for maintaining stable operation of the battery device 2.

[0181] One of the main functions of the receiving hole 714 is to provide physical limitation for the electrical components. By precisely designing the size and shape of the receiving hole 714, it can be ensured that the electrical components can be accurately and firmly positioned on the insulating bracket 701 during installation. This limiting effect helps prevent the electrical components from being displaced or loosened during installation or use, thereby improving the stability and reliability of the system. The electrical components pass through the insulating components through the receiving hole 714 and can directly contact the heat exchange components for heat exchange. By providing the receiving hole 714, the electrical components can be limited and heat exchange can be facilitated, thereby improving the heat exchange efficiency.

[0182] like Figures 4 to 10As shown, in some optional embodiments, the battery device 2 includes a battery cell 6, an insulating assembly 7 and a heat exchange assembly 8. The battery cell 6 includes an electrode terminal 25, and the insulating assembly 7 includes an insulating bracket 701 and an electrical connector 702 provided on the insulating bracket 701. The electrical connector 702 is connected to the insulating bracket 701, and the electrical connector 702 is connected to the electrode terminal 25 to electrically connect the two battery cells 6. The heat exchange assembly 8 is provided on the side of the insulating bracket 701 away from the battery cell 6, and a heat exchange flow channel for heat exchange with the battery cell 6 and the electrical connector 702 is provided in the heat exchange assembly 8. The battery device 2 also includes a box 5, and the box 5 includes a frame 501 and a support plate 502. The support plate 502 is connected to the frame 501. Among them, the heat exchange assembly 8 is arranged opposite to the support plate 502 and is respectively arranged on opposite sides of the frame 501, and the support plate 502, the frame 501 and the heat exchange assembly 8 are enclosed together to form a receiving cavity for accommodating the battery cell 6 and the insulating assembly 7. The battery device 2 includes a battery pack, which includes a plurality of battery cells 6 stacked along a first direction X. There are a plurality of battery packs, which are arranged along a second direction Y, and the second direction Y is perpendicular to the first direction X. A plurality of connection holes 704 are provided on the insulating bracket 701, and the connection holes 704 are arranged along the circumference of the insulating bracket 701. The insulating bracket 701 also includes a connector, which passes through the connection holes 704 to connect the insulating bracket 701 with the frame 501. The insulating bracket 701 includes a first connection portion 705 and a second connection portion 706 arranged at intervals, and the two ends of the electrical connector 702 are respectively connected to the first connection portion 705 and the second connection portion 706. A pressure relief mechanism 24 is provided on the battery cell 6, and a pressure relief hole 708 is provided at the position of the first connection portion 705 corresponding to the pressure relief mechanism 24. A gas groove 801 is provided on the surface of the heat exchange component 8 facing the insulating component 7, and the gas groove 801 is arranged toward the pressure relief hole 708. The gas groove 801 extends along the first direction X and is connected to the plurality of pressure relief holes 708 respectively. The electrical connector 702 includes a first connecting piece 709, a second connecting piece 710 and a bent portion 711. The first connecting piece 709 is connected to the electrode terminal 25 of one of the battery cells 6, the second connecting piece 710 is arranged on one side of the first connecting portion 705 along the first direction X, and the second connecting portion 706 is connected to the electrode terminal 25 of another battery cell 6. The bent portion 711 is connected between the first connecting portion 705 and the second connecting portion 706, and the bent portion 711 can extend along the first direction X. A first convex portion 712 is provided on the surface of one side of the insulating bracket 701 facing the battery cell 6, and the first convex portion 712 is arranged corresponding to the position where two battery packs are adjacent, and the first convex portion 712 is connected to the two battery packs respectively. A first channel is provided in the first convex portion 712, and a connecting belt 713 extending along the first direction X is provided in the first channel, and the connecting belt 713 is arranged corresponding to multiple battery cells 6. An adhesive layer is provided between the first convex portion 712 and the battery pack.The heat exchange component 8 is provided with a second protrusion 802 on one side facing the insulation component 7. A heat exchange channel is provided in the second protrusion 802. The second protrusion 802 is provided corresponding to the electrical connector 702. A heat conduction layer is provided between the second protrusion 802 and the electrical connector 702.

[0183] The embodiment of the present application also provides an electrical device, which includes the battery device 2 in the above embodiment, and the battery device 2 is used to provide electrical energy. The electrode terminal 25 provided on the battery cell 6 is used to transmit the electrical energy of the battery cell 6 to other components, such as charging and discharging. The electrical connector 702 in the insulating assembly 7 is used to connect the battery cell 6 to connect two battery cells 6 in series or in parallel. The insulating bracket 701 limits the electrical connection piece to facilitate welding and other operations on the electrical connection piece on the side away from the battery cell 6, thereby reducing the debris from the welding process from falling into the gap between the battery cells 6, and reducing the risk of welding debris damaging the surface insulation layer of the battery cell 6 and causing a short circuit, thereby improving the operating stability of the battery cell 6. In addition, a heat exchange assembly 8 is provided for heat exchange between the battery cell 6 and the electrical connector 702, which further improves the stability of the battery cell 6 during operation.

[0184] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A battery cell including electrode terminals; An insulating assembly, comprising an insulating support and an electrical connector provided on the insulating support, wherein the electrical connector is connected to the insulating support and connected to the electrode terminal to electrically connect the two battery cells; The heat exchange component is arranged on a side of the insulating support away from the battery cell, and a heat exchange flow channel for exchanging heat with the battery cell and the electrical connector is arranged in the heat exchange component.

2. The battery device according to claim 1, characterized in that: The battery device comprises a box, and the box comprises: Frame; A support plate connected to the frame, The heat exchange assembly is arranged opposite to the support plate and respectively disposed on two opposite sides of the frame body. The support plate, the frame body and the heat exchange assembly together form a receiving cavity for receiving the battery cell and the insulating assembly.

3. The battery device according to claim 2, characterized in that: An insulating layer is provided on a surface of the insulating assembly facing the battery cell.

4. The battery device according to claim 2, characterized in that: The insulating support is provided with a plurality of connection holes, and the connection holes are arranged along the circumference of the insulating support. The insulating support also includes a connection piece, and the connection piece passes through the connection holes to connect the insulating support with the frame.

5. The battery device according to any one of claims 1 to 4, characterized in that: The insulating support comprises a first connecting portion and a second connecting portion which are arranged at intervals, and two ends of the electrical connector are respectively connected to the first connecting portion and the second connecting portion.

6. The battery device according to claim 5, characterized in that: The battery cell is provided with a pressure relief mechanism, the first connection portion is provided with a pressure relief hole at a position corresponding to the pressure relief mechanism, and the surface of the heat exchange component facing the insulation component is provided with a gas groove, and the gas groove is arranged toward the pressure relief hole.

7. The battery device according to claim 6, characterized in that: The battery device includes a battery pack, the battery pack includes a plurality of battery cells stacked along a first direction, the gas grooves extend along the first direction and are respectively connected to a plurality of pressure relief holes.

8. The battery device according to claim 7, characterized in that: The electrical connector comprises: A first connecting piece connected to an electrode terminal of the battery cell; A second connecting piece, provided on one side of the first connecting portion along the first direction, the second connecting portion being connected to an electrode terminal of another of the battery cells; The bent portion is connected between the first connecting portion and the second connecting portion, and the bent portion can extend along the first direction.

9. The battery device according to claim 7, characterized in that: There are multiple battery packs, and the multiple battery packs are arranged along a second direction, and the second direction is perpendicular to the first direction.

10. The battery device according to claim 9, characterized in that: There are multiple insulating components, and the multiple insulating components are arranged in sequence along the second direction, and each insulating component is arranged corresponding to one of the battery packs.

11. The battery device according to claim 10, characterized in that: The plurality of insulating components are an integrally formed structure.

12. The battery device according to claim 10 or 11, characterized in that: A first convex portion is provided on a surface of the insulating bracket on one side facing the battery cell. The first convex portion is arranged corresponding to a position where two battery packs are adjacent to each other, and the first convex portion is connected to the two battery packs respectively.

13. The battery device according to claim 12, characterized in that: A first channel is disposed in the first convex portion. A connecting belt extending along the first direction is disposed in the first channel. The connecting belt is disposed corresponding to the plurality of battery cells.

14. The battery device according to claim 13, characterized in that: An adhesive layer is provided between the first protrusion and the battery pack.

15. The battery device according to claim 12, characterized in that: A second convex portion is provided on a side of the heat exchange component facing the insulating component, a heat exchange flow channel is provided in the second convex portion, and the second convex portion is arranged corresponding to the electrical connector.

16. The battery device according to claim 15, characterized in that: A heat conducting layer is provided between the second protrusion and the electrical connector.

17. The battery device according to any one of claims 1 to 4, characterized in that: The insulating bracket is provided with a receiving hole, and the receiving hole is used to receive the electrical component so as to exchange heat between the heat exchange assembly and the electrical component.

18. An electrical equipment, characterized in that: The electrical equipment comprises a battery device as claimed in any one of claims 1 to 17, wherein the battery device is used to provide electrical energy.

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