Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device provided by the embodiment of the utility model comprises a plurality of battery monomer assemblies, a plurality of wire harness assemblies, a first bus piece and a positioning structure, and each battery monomer assembly comprises a plurality of battery monomers arranged along a second direction; the wire harness assembly is arranged on one side of the battery monomer assembly and is connected with the plurality of battery monomers; the first confluence piece is connected to two adjacent battery monomers arranged along a first direction; the positioning structure is at least partially mounted on the battery cells and penetrates through the at least one wire harness assembly and the first bus member. The reliability of the battery device is improved.

Description

Technical Field

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

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptop computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc.

[0003] How to improve the reliability of batteries is an important topic in the field of batteries. Summary of the Utility Model

[0004] This application provides a battery device and an electrical device, which can improve the reliability of the battery device.

[0005] In a first aspect, an embodiment of this application provides a battery device, including a plurality of battery cell components, a plurality of wire harness components, a first bus bar, and a positioning structure. The plurality of battery cell components are arranged along a first direction. The battery cell component includes a plurality of battery cells arranged along a second direction, and the first direction is perpendicular to the second direction. The plurality of wire harness components are arranged along the first direction, and the wire harness components are disposed on one side of the battery cell component. The wire harness components are connected to the plurality of battery cells of at least one battery cell component. The first bus bar is stacked on one side of two adjacent wire harness components facing away from the battery cell component and is connected to two adjacent battery cells arranged along the first direction. The positioning structure is at least partially installed on the battery cell and penetrates at least one wire harness component and the first bus bar.

[0006] By at least partially installing the positioning structure on the battery cell and penetrating at least one wire harness component and the first bus bar, the positioning structure limits the first bus bar in the first direction and the second direction, thereby realizing the positioning of the position of the wire harness component on the battery cell component by the positioning structure, and improving the reliability of the battery device and the positioning accuracy of the wire harness component.

[0007] In some optional embodiments of this application, the positioning structure includes a first positioning member and a second positioning member. The first positioning member is connected to the battery cell and penetrates one wire harness component and the first bus bar. The second positioning member is connected to another wire harness component and penetrates the first bus bar.

[0008] By arranging the first positioning member on the battery cell and the second positioning member on the adjacent wire harness component, and the first positioning member and the second positioning member penetrate the first bus bar, the positioning of the two wire harness components and the battery cell component and the positioning of the two wire harness components are realized.

[0009] In some alternative embodiments of the present application, the first positioning member includes a first body and a first positioning portion. The first positioning portion protrudes from a side of the first body away from the battery cell. The second positioning member includes a second body and a second positioning portion. The second positioning portion protrudes from a side of the second body away from the battery cell. The first body is connected to the battery cell, and the second body is connected to a wire harness assembly. The first positioning portion and the second positioning portion are respectively opposite to two adjacent battery cells, and both the first positioning portion and the second positioning portion penetrate through the first bus bar.

[0010] The first bus bar is positioned by the jointly protruding first positioning portion and second positioning portion, realizing the positioning of two adjacent wire harness assemblies, improving the positioning accuracy and simplifying the positioning structure.

[0011] In some alternative embodiments of the present application, the wire harness assembly includes a circuit board. The circuit board extends along a first direction. At least a part of the second positioning member is disposed on a side of the circuit board away from the battery cell assembly.

[0012] The circuit board has a lower thickness compared to other structures of the wire harness assembly. At least a part of the second positioning member being opposite to the circuit board can reduce the overall thickness of the battery device, facilitating the arrangement of the second positioning member.

[0013] In some alternative embodiments of the present application, the wire harness assembly further includes a plurality of temperature measuring members. The temperature measuring members are connected between the circuit board and the battery cell. The second positioning member is provided with a receiving structure, and the receiving structure receives at least one temperature measuring member.

[0014] The temperature measuring members of the wire harness assembly are positioned by setting the receiving structure, simplifying the structure and improving the positioning accuracy of the wire harness assembly.

[0015] In some alternative embodiments of the present application, the wire harness assembly further includes an insulating film and a plurality of second bus bars disposed on the insulating film. The plurality of second bus bars electrically connect the battery cells of at least one battery cell assembly. Along the first direction, the plurality of second bus bars are disposed on opposite sides of the circuit board and are connected to the circuit board.

[0016] By providing the insulating film and the second bus bars, the battery device has a thin, light and integrated structure, smaller volume, lighter weight, improved assembly efficiency and reduced failure rate.

[0017] In some alternative embodiments of the present application, the second positioning member includes a second body and a second positioning portion. The second body includes a first connecting portion, a second connecting portion and a third connecting portion. The first connecting portion is disposed between the second connecting portion and the third connecting portion. The second connecting portion is disposed between the battery cell and the first bus bar. The second positioning portion protrudes and is connected to a side of the second connecting portion away from the battery cell. The third connecting portion is provided with a receiving structure.

[0018] It is placed between the second connecting part and the third connecting part through the first connecting part, so that the second positioning part is arranged on the second connecting part, which is more convenient for the first busbar to penetrate, and the third connecting part is closer to the temperature measuring part, simplifying the structure of the second positioning part and reducing the manufacturing difficulty and assembly difficulty.

[0019] In some alternative embodiments of the present application, the second positioning part is hot-pressed and formed with the wire harness assembly. By hot-pressing and forming, the positioning accuracy between the second positioning part and the wire harness assembly is improved, and further the positioning accuracy between the wire harness assembly and the battery cell is improved.

[0020] In some alternative embodiments of the present application, the positioning structure is installed on two adjacent battery cells along the first direction, and penetrates through the first busbar and two adjacent wire harness assemblies. By arranging the positioning structure on two battery cells, it is convenient to transform and position the existing wire harness assembly and battery cell, reducing the transformation cost, and the structure is simple and easy to manufacture.

[0021] In some alternative embodiments of the present application, the positioning structure includes two first positioning parts, which are respectively installed on two adjacent battery cells along the first direction. The two first positioning parts respectively penetrate through two adjacent wire harness assemblies and both penetrate through the first busbar.

[0022] By respectively arranging the two first positioning parts on the two battery cells, it is convenient for the installation of other structures, reducing the warping caused by structural avoidance and the risk of virtual soldering between the first busbar and the battery cell.

[0023] In some alternative embodiments of the present application, the first positioning part includes two first notches arranged along the first direction, and the opening directions of the two first notches are opposite; the battery cell includes two electrode terminals arranged along the first direction, and the first positioning part is connected between the two electrode terminals, and parts of the two electrode terminals are respectively accommodated in the two first notches.

[0024] By partially accommodating the electrode terminal in the first notch, the positioning accuracy between the first positioning part and the battery cell is improved, and further the positioning accuracy of the positioning structure to the first busbar is improved.

[0025] In some alternative embodiments of the present application, the positioning structure includes a connecting body and two third positioning parts. The two third positioning parts are connected to the connecting body, and the connecting body is connected to two adjacent battery cells along the first direction; along the first direction, the two third positioning parts respectively penetrate through two adjacent wire harness assemblies and both penetrate through the first busbar.

[0026] By arranging two third positioning parts on the connecting body and connecting the connecting body to the two battery cells, the structure of the positioning structure is simplified and the manufacturing cost is increased.

[0027] In some alternative embodiments of the present application, the connection body includes a first mounting portion and two second mounting portions. The two second mounting portions are spaced apart and have second notches provided on their opposite sides. The first mounting portion is connected between the two second mounting portions. Along the second direction, the first mounting portion is disposed on one side of the second notch, and two third positioning portions respectively protrude from the two second mounting portions; the battery cell includes two electrode terminals arranged along the first direction. Along the first direction, the adjacent two electrode terminals of adjacent two battery cells are respectively received in the second notches of the two second mounting portions.

[0028] By connecting the first mounting portion to one side of the second notch, the connection body avoids other structures, facilitating installation. The limitation of the second notch improves the limiting accuracy between the connection body and multiple battery cells, and further improves the positioning accuracy of the positioning structure for the wire harness assembly.

[0029] In a second aspect, the present application provides an electrical device, including the battery device of the first aspect, and the battery device is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0031] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0032] Figure 2 Schematic diagram of a battery device provided by some embodiments of the present application;

[0033] Figure 3 For Figure 2 Structural schematic diagram of the battery cell assembly in

[0034] Figure 4 Structural schematic diagram of a battery cell provided by some embodiments of the present application;

[0035] Figure 5 Structural schematic diagram of a battery device provided by some embodiments of the present application;

[0036] Figure 6 For Figure 5 Partial enlarged view at A in

[0037] Figure 7 For Figure 5 Explosion schematic diagram of

[0038] Figure 8 For Figure 5 Structural schematic diagram of the second positioning member in

[0039] Figure 9 For Figure 2Schematic diagram of the assembly structure of a battery cell and a positioning structure in a battery device;

[0040] Figure 10 is Figure 9 Schematic diagram of the structure of the first positioning member in [the figure];

[0041] Figure 11 Schematic diagram of the structure of another battery device according to some embodiments of the present application;

[0042] Figure 12 is Figure 11 Schematic diagram of the structure of the positioning structure in [the figure].

[0043] In the drawings, the drawings are not necessarily drawn to actual scale.

[0044] Explanation of reference numerals:

[0045] 1, vehicle; 2, battery device; 3, controller; 4, motor; 5, box body; 5a, first box body; 5b, second box body; 6, battery cell assembly; 7, battery cell; 10, electrode assembly; 11, tab; 20, outer shell; 21, housing; 22, end cap; 30, electrode terminal;

[0046] 8, wire harness assembly; 81, circuit board; 82, temperature measuring component; 83, second bus bar; 84, insulating film; X, first direction; Y, second direction;

[0047] 100, positioning structure; 110, first positioning member; 111, first body; 112, first positioning portion; 113, first notch; 120, second positioning member; 120a, second body; 120b, second positioning portion; 121, first connecting portion; 122, second connecting portion; 123, third connecting portion; 124, fourth connecting portion; 125, fifth connecting portion; 126, accommodating structure; 130, connecting body; 131, third positioning portion; 132, first mounting portion; 133, second mounting portion; 134, second notch; 200, first bus bar. Detailed implementation manners

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0050] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0051] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", "attached" 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 direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] The term "and / or" in this application is merely a description of the association relationship between associated objects and indicates that three relationships can 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 represents an "or" relationship between the associated objects before and after.

[0053] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings of the embodiments of this application, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0054] The term "plurality" as used in this application refers to two or more (including two).

[0055] At present, from the perspective of the development of the market situation, the application of battery devices is becoming more and more extensive. Battery devices are not only applied to energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied to electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of battery devices, the market demand for them is also continuously increasing.

[0056] In related technologies, battery devices often integrate multiple battery cells and achieve current collection through a wiring harness assembly, and a sampling component is used to collect and transmit the operating parameter information of the battery cells to a battery management system, such as current, voltage, or temperature, etc. Multiple wiring harness assemblies are usually installed in a battery device. If the positioning of the wiring harness assembly and the battery cell is inaccurate, the reliability of the battery device will be reduced.

[0057] Based on the above problems, an embodiment of the present application provides a battery device. Adjacent two wiring harness assemblies are connected to a battery cell through a first current collection member, and at least part of a positioning structure is arranged on the battery cell. The wiring harness assembly and the battery cell are positioned by the positioning structure passing through the first current collection member and a wiring harness assembly.

[0058] The technical solutions described in the embodiments of the present application are applicable to electrical equipment using battery devices. The electrical equipment can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator, and a power planer, etc. The embodiments of the present application do not make special restrictions on the above electrical equipment.

[0059] For the convenience of description in the following embodiments, the electrical equipment is taken as a vehicle as an example for illustration.

[0060] Figure 1 It is a schematic structural diagram of a vehicle provided for some embodiments of the present application.

[0061] As Figure 1 shown, a battery device 2 is arranged inside a vehicle 1. The battery device 2 can be arranged at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used for power supply of the vehicle 1. For example, the battery device 2 can be used as an operating power source of the vehicle 1.

[0062] 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, for the working power requirements during the start-up, navigation, and driving of the vehicle 1.

[0063] In some embodiments of the present application, the battery device 2 can not only be used as the operating power source of the vehicle 1, but also as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0064] Figure 2 Schematic diagram of the battery device provided for some embodiments of the present application; Figure 3 For Figure 2 Schematic diagram of the structure of the battery cell assembly in

[0065] Referring to Figure 2 , in some embodiments, the battery device 2 may include a plurality of battery cell assemblies 6. The plurality of battery cell assemblies 6 are arranged in a first direction to provide voltage and capacity.

[0066] The battery cell assembly 6 may include a plurality of battery cells 7. The plurality of battery cells 7 are connected in series, parallel, or in a hybrid connection through a wiring harness assembly 8. A hybrid connection means that there are both series and parallel connections among the plurality of battery cells 7.

[0067] The battery cell 7 can be a secondary battery cell, which refers to a battery cell that can activate the active material and continue to be used after discharging through charging.

[0068] As an example, the battery cell 7 can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium-metal battery cell, a sodium-metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc.

[0069] As an example, the battery cell 7 can be a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a multi-prismatic battery cell, and the multi-prismatic battery cell is, for example, a hexagonal-prismatic battery cell, etc.

[0070] In some embodiments, the battery cell assembly 6 is generally formed by arranging a plurality of battery cells 7; as an example, the battery cell assembly 6 can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells 7 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 7 with cable ties.

[0071] In some embodiments, the battery device 2 may be a battery pack, which includes a box body 5 and one or more battery cell assemblies 6, and the battery cell assemblies 6 are accommodated in the box body 5. As an example, the battery cell assembly 6 may be a battery module, and the battery cell assembly 6 may be accommodated in the box body 5 by fixing the battery module in the box body 5. As an example, the battery cell assembly 6 may also be accommodated in the box body 5 by directly fixing a plurality of battery cells 7 to the box body 5.

[0072] In some embodiments, the box body 5 is used to accommodate the battery cells 7, and the box body 5 may have various structures.

[0073] In some embodiments, the box body 5 may include a first box body 5a and a second box body 5b. The first box body 5a and the second box body 5b are buckled together so that a closed space is formed inside the box body 5 to accommodate the battery cell assembly 6. Here, "closed" means covered or closed, which may be sealed or non-sealed. The first box body 5a may be a top cover or a bottom plate.

[0074] In some embodiments, the battery device 2 may be an energy storage device.

[0075] The energy storage device can be used in an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods.

[0076] In some embodiments, the energy storage device includes an energy storage container, an energy storage electrical cabinet, etc.

[0077] Figure 4 Schematic diagram of the structure of a battery cell provided in some embodiments of the present application.

[0078] As Figure 4 shown, in some embodiments, the battery cell 7 includes a housing 20 and an electrode assembly 10 accommodated in the housing 20.

[0079] In some embodiments, the housing 20 may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), or a composite metal shell (such as a copper-aluminum composite shell), etc.

[0080] In some embodiments, the housing 20 is a component for forming the internal cavity of the battery cell 7, and the formed internal cavity can be used to accommodate the electrode assembly 10, the electrolyte, and other components.

[0081] In some embodiments, the housing 20 may include a housing body 21 and an end cap 22. The housing body 21 has an opening, and the end cap 22 is connected to the housing body 21 and covers the opening.

[0082] The housing 21 and the end cap 22 can be independent components. Exemplarily, an opening can be provided on the housing 21, and the end cap 22 is covered at the opening to form the internal cavity of the battery cell 7.

[0083] The housing 21 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 21 can be determined according to the specific shape and size of the electrode assembly 10.

[0084] The material of the housing 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0085] The shape of the end cap 22 can be adapted to the shape of the housing 21 to cooperate with the housing 21. The material of the end cap 22 can be the same as or different from that of the housing 21. Optionally, the end cap 22 can be made of a material with a certain hardness and strength, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In this way, the end cap 22 is not easily deformed when being squeezed or collided, so that the battery cell 7 can have a higher structural strength and the reliability can also be improved.

[0086] The end cap 22 is connected to the housing 21 by welding, bonding, clamping or other means.

[0087] The electrode assembly 10 is the component in the battery cell 7 where the electrochemical reaction occurs. The housing 21 can contain one or more electrode assemblies 10.

[0088] In some embodiments, the electrode assembly 10 includes an electrode body and a plurality of tab ears 11. The plurality of tab ears 11 includes a first tab ear and a second tab ear, and the first tab ear and the second tab ear extend from the electrode body. The first tab ear and the second tab ear have opposite polarities. In other words, one of the first tab ear and the second tab ear is a positive tab ear, and the other is a negative tab ear.

[0089] As an example, a plurality of positive electrode plates and negative electrode plates can be respectively provided, and the plurality of positive electrode plates and the plurality of negative electrode plates are alternately stacked.

[0090] In some embodiments, the battery cell 7 includes a plurality of electrode terminals 30, and the plurality of electrode terminals 30 includes a first electrode terminal and a second electrode terminal. Optionally, both the first electrode terminal and the second electrode terminal are insulated from the end cap 22. Optionally, the first electrode terminal is riveted to the end cap 22, and the second electrode terminal is riveted to the end cap 22. The first electrode terminal is electrically connected to the first tab ear, and the second electrode terminal is electrically connected to the second tab ear.

[0091] The first electrode terminal and the second electrode terminal are used for electrically connecting to an external circuit to realize charging or discharging of the battery cell 7.

[0092] Figure 5Schematic structural diagram of a battery device according to some embodiments of the present application; Figure 6 is Figure 5 the partial enlarged view of A in Figure 7 is Figure 5 the explosion schematic diagram of (some battery cells are omitted).

[0093] As Figures 1 to 7 shown, some embodiments of the present application provide a battery device 2, including a plurality of battery cell assemblies 6, a plurality of wire harness assemblies 8, a first busbar 200 and a positioning structure 100. The plurality of battery cell assemblies 6 are arranged along a first direction X. The battery cell assembly 6 includes a plurality of battery cells 7 arranged along a second direction Y. The first direction X is perpendicular to the second direction Y. The plurality of wire harness assemblies 8 are arranged along the first direction X. The wire harness assembly 8 is disposed on one side of the battery cell assembly 6. The wire harness assembly 8 is connected to the plurality of battery cells 7 of at least one battery cell assembly 6. The first busbar 200 is stacked on one side of two adjacent wire harness assemblies 8 facing away from the battery cell assembly 6 and is connected to two adjacent battery cells 7 arranged along the first direction X. The positioning structure 100 is at least partially installed on the battery cell 7 and penetrates at least one wire harness assembly 8 and the first busbar 200.

[0094] The wire harness assembly 8 is used to collect and transmit the working parameter information of the battery cell 7 to the battery management system, such as current, voltage or temperature, etc.

[0095] The wire harness assemblies 8 are stacked on one side of the battery cell assemblies 6. One wire harness assembly 8 can be connected to the plurality of battery cells 7 of one battery cell assembly 6, or one wire harness assembly 8 can be connected to the plurality of battery cells 7 of a plurality of battery cell assemblies.

[0096] Exemplarily, the first direction X can be one of the length direction and the width direction of the battery device 2, and the second direction Y is the other of the length direction and the width direction of the battery device 2. As an example, the first direction X is the length direction of the battery device 2, and the second direction Y is the width direction of the battery device 2.

[0097] The first busbar 200 is a component for conducting electricity between the battery cells 7 and between the battery cells 7 and the wire harness assembly 8. The first busbar 200 can be one or more.

[0098] Exemplarily, the first busbar 200 can be made of a metal bar or a metal plate made of a material with good electrical conductivity such as copper or aluminum. In one example, the first busbar 200 includes an aluminum bar.

[0099] The wire harness assembly 8 is disposed between the first busbar 200 and the battery cell 7 and is electrically connected to the battery cell 7 through the first busbar 200. Exemplarily, the first busbar 200 extends along the first direction X. A part of the first busbar 200 is stacked on one wire harness assembly 8, and another part is stacked on another adjacent wire harness assembly 8. The first busbar 200 is connected to two adjacent battery cells 7 that are respectively opposite to two adjacent wire harness assemblies 8 along the first direction X.

[0100] As an example, the two adjacent battery cells 7 connected to the first busbar 200 may be located at the head or the end of the battery cell assembly 6.

[0101] The positioning structure 100 can position the positions of the wire harness assembly 8 and the battery cell 7. The positioning structure 100 can be entirely installed on the battery cell 7 or partially installed on the battery cell 7. The positioning structure 100 can be one or more.

[0102] Exemplarily, the positioning structure 100 can include one piece or multiple pieces. As an example, multiple pieces of the positioning piece can all be placed on the battery cell 7 or at least one piece is placed on the battery cell 7. In one example, multiple pieces can be arranged on multiple battery cells 7.

[0103] The positioning structure 100 can penetrate through one wire harness assembly 8 and through the first busbar 200, or the positioning structure 100 can respectively penetrate through multiple wire harness assemblies 8 and through the first busbar 200. The positioning structure 100 is used to limit the position of the first busbar 200 in the first direction X and the second direction Y.

[0104] In one example, the positioning structure 100 respectively penetrates through two adjacent wire harness assemblies 8 and further penetrates through the first busbar 200.

[0105] Exemplarily, along the thickness direction of the first busbar 200, the positioning structure 100 can penetrate through the entire thickness of the first busbar 200.

[0106] By installing at least a part of the positioning structure 100 on the battery cell 7 and penetrating through at least one wire harness assembly 8 and the first busbar 200, the positioning structure 100 limits the position of the first busbar 200 in the first direction X and the second direction Y, and further realizes the positioning of the position of the wire harness assembly 8 on the battery cell assembly 6, improving the reliability of the battery device 2 and the positioning accuracy of the wire harness assembly 8.

[0107] In one embodiment, the first busbar 200 can be connected to the wire harness assembly 8 and further connected to the battery cell 7.

[0108] Further, in an alternative embodiment of the present application, the positioning structure 100 includes a first positioning member 110 and a second positioning member 120. The first positioning member 110 is connected to the battery cell 7 and penetrates through a wire harness assembly 8 and the first bus bar 200. The second positioning member 120 is connected to another wire harness assembly 8 and penetrates through the first bus bar 200.

[0109] The first positioning member 110 may include one or more.

[0110] Exemplarily, the first positioning member 110 may be connected to the battery cell 7 by welding, bonding, detachable connection, or the like.

[0111] Exemplarily, the shape of the first positioning member 110 may be a simple shape such as a sheet, a block, a strip, or a complex shape formed by a combination of simple shapes.

[0112] As an example, the first positioning member 110 may partially or completely penetrate through a wire harness assembly 8 and the first bus bar 200. The first positioning member 110 sequentially penetrates through the wire harness assembly 8 and the first bus bar 200. Among them, the first positioning member 110 may be in contact with or spaced from the wire harness assembly 8.

[0113] The second positioning member 120 may include one or more.

[0114] Exemplarily, the second positioning member 120 may be connected to the wire harness assembly 8 by welding, bonding, detachable connection, or the like.

[0115] Exemplarily, the shape of the second positioning member 120 may be a simple shape such as a sheet, a block, a strip, or a complex shape formed by a combination of simple shapes.

[0116] As an example, the second positioning member 120 may partially or completely penetrate through a wire harness assembly 8 and the first bus bar 200. The second positioning member 120 sequentially penetrates through the wire harness assembly 8 and the first bus bar 200. Among them, the second positioning member 120 may be in contact with or spaced from the wire harness assembly 8.

[0117] Exemplarily, along the height direction of the battery device 2, the first positioning member 110 and the second positioning member 120 are respectively opposite to two wire harness assemblies 8 adjacent in the first direction X.

[0118] In one example, the first positioning member 110 is bonded to the end cover 22 of the battery cell 7.

[0119] By providing the first positioning member 110 on the battery cell 7 and the second positioning member 120 on the adjacent wire harness assembly 8, and the first positioning member 110 and the second positioning member 120 penetrate through the first bus bar 200, the positioning of the two wire harness assemblies 8 and the battery cell assembly 6 and the positioning of the two wire harness assemblies 8 are realized.

[0120] In addition, in some alternative embodiments of the present application, the first positioning member 110 includes a first body 111 and a first positioning portion 112. The first positioning portion 112 protrudes from a side of the first body 111 away from the battery cell 7. The first body 111 includes two first notches 113 opened in opposite directions along the first direction X. The first body 111 is placed between two battery terminals, and at least part of the two electrode terminals 30 of the battery cell 7 is received in the two second notches 134.

[0121] In one example, the first body 111 is in a sheet shape, for example, in a rectangular, circular, or triangular sheet shape.

[0122] The first positioning portion 112 protrudes from a side of the first body 111 facing away from the battery cell 7, and the first positioning portion 112 can be bonded, welded, or integrally formed with the first body 111.

[0123] The first positioning portion 112 penetrates through the wire harness assembly 8, and the first body 111 is stacked between the battery cell 7 and the wire harness assembly 8.

[0124] As an example, the first positioning portion 112 includes a positioning post, and the first bus bar 200 and the wire harness assembly 8 are provided with positioning holes, and the positioning post penetrates through the positioning holes of the first bus bar 200 and the wire harness assembly 8.

[0125] In one embodiment, the second positioning member 120 includes a second body 120a and a second positioning portion 120b. The second positioning portion 120b protrudes from a side of the second body 120a away from the battery cell 7; the first body 111 is connected to the battery cell 7, and the second body 120a is connected to a wire harness assembly 8; the first positioning portion 112 and the second positioning portion 120b face two adjacent battery cells 7 respectively, and both the first positioning portion 112 and the second positioning portion 120b penetrate through the first bus bar 200.

[0126] In one example, the second body 120a is in a sheet shape, for example, in a rectangular, circular, or triangular sheet shape.

[0127] The second positioning portion 120b protrudes from a side of the second body 120a facing away from the wire harness assembly 8, and the second positioning portion 120b can be bonded, welded, or integrally formed with the second body 120a.

[0128] Exemplarily, at least part of the first body 111 is disposed on a side of the wire harness assembly 8 facing away from the battery cell 7.

[0129] As an example, the second positioning portion 120b includes a positioning post, and the first bus bar 200 is provided with a positioning hole, and the positioning post penetrates through the positioning hole of the first bus bar 200.

[0130] The first positioning portion 112 and the second positioning portion 120b provided in a protruding manner jointly position the first busbar 200, thereby achieving the positioning of two adjacent wire harness assemblies 8, improving the positioning accuracy and simplifying the positioning structure 100.

[0131] Further, in some embodiments of the present application, the wire harness assembly 8 includes a circuit board 81 that extends along the first direction X, and at least a part of the second positioning member 120 is disposed on the side of the circuit board 81 facing away from the battery cell assembly 6.

[0132] The circuit board 81 may include a flexible printed circuit (FPC) or a rigid printed circuit board (PCB), etc.

[0133] The second positioning member 120 may be partially or entirely disposed on the side of the circuit board 81 facing away from the battery cell 7.

[0134] The circuit board 81 has a lower thickness compared to other structures of the wire harness assembly 8. At least a part of the second positioning member 120 being opposite to the circuit board 81 can reduce the overall thickness of the battery device 2 and facilitate the arrangement of the second positioning member 120.

[0135] In addition, in other embodiments of the present application, the wire harness assembly 8 further includes a plurality of temperature measuring elements 82. The temperature measuring elements 82 are connected to the circuit board 81 and the battery cell 7. The second positioning member 120 is provided with a receiving structure 126 that receives at least one temperature measuring element 82.

[0136] The temperature measuring element 82 is used to detect the temperature of one or more battery cells 7. Exemplarily, the temperature measuring element 82 may include one or more of a thermistor, a thermocouple, and a temperature measuring chip. In one example, the temperature measuring element 82 includes an NTC thermistor or a PTC thermistor.

[0137] Exemplarily, a plurality of temperature measuring elements 82 are connected to both sides of the circuit board 81 along the first direction X, and the plurality of temperature measuring elements 82 on one side of the circuit board 81 are spaced apart.

[0138] The receiving structure 126 is used to receive the temperature measuring element 82 and position the temperature measuring element 82. Exemplarily, the receiving structure 126 may be a receiving cavity or a receiving spacing or a receiving layer.

[0139] One or more temperature measuring elements 82 can be received in the receiving structure 126. As an example, two temperature measuring elements 82 adjacent along the second direction Y can be received in the receiving structure 126.

[0140] By providing the receiving structure 126 to position the temperature measuring element 82 of the wire harness assembly 8, the structure is simplified and the positioning accuracy of the wire harness assembly 8 is improved.

[0141] Continue to refer to Figures 1 to 7 , in some embodiments of the present application, the wire harness assembly 8 further includes an insulating film 84 and a plurality of second bus bars 83 disposed on the insulating film 84, and the plurality of second bus bars 83 electrically connect the battery cells 7 of at least one battery cell assembly 6; along the first direction X, the plurality of second bus bars 83 are disposed on opposite sides of the circuit board 81 and are connected to the circuit board 81.

[0142] The insulating film 84 is used to insulate the battery cell 7 from unnecessary structures. Exemplarily, the insulating film 84 includes materials such as polyester, polyimide, polytetrafluoroethylene, and epoxy resin coating.

[0143] Exemplarily, the insulating film 84 can be thermally formed with the circuit board 81, the temperature measuring element 82, and the second return member.

[0144] Exemplarily, one or more circuit boards 81 can be disposed on one insulating film 84. As an example, two circuit boards 81 are disposed on one insulating film 84, and the two circuit boards 81 are spaced apart along the first direction X on one insulating film 84.

[0145] Exemplarily, one insulating film 84 can be opposite to one battery cell assembly 6 or opposite to a plurality of battery cell assemblies 6. As an example, along the first direction X, one insulating film 84 is opposite to two battery cell assemblies 6.

[0146] The second bus bar 83 is used to connect the plurality of battery cells 7 in series and parallel. Exemplarily, the second bus bar 83 can include copper material, aluminum material, copper-aluminum composite material, etc.

[0147] Exemplarily, along the second direction Y, the plurality of second bus bars 83 are spaced apart and are connected to the circuit board 81.

[0148] By providing the insulating film 84 and the second return member, the structure of the battery device 2 is thin, light, and integrated, with a smaller volume and lighter weight, and the assembly efficiency is improved and the failure rate is reduced.

[0149] Figure 8 For Figure 5 the structural schematic diagram of the second positioning member in

[0150] As Figures 1 to 7As shown, in some alternative embodiments of the present application, the second positioning member 120 includes a second body 120a and a second positioning portion 120b; the second body 120a includes a first connecting portion 121, a second connecting portion 122, and a third connecting portion 123, and the first connecting portion 121 is disposed between the second connecting portion 122 and the third connecting portion 123; the second connecting portion 122 is disposed between the battery cell 7 and the first bus bar 200, the second positioning portion 120b is convexly connected to a side of the second connecting portion 122 away from the battery cell 7, and the third connecting portion 123 is provided with a receiving structure 126.

[0151] Exemplarily, the second body 120a is in a sheet shape and can be partially disposed between the wire harness assembly 8 and the battery cell 7, and / or partially inserted into the wire harness assembly 8. As an example, a part of the second body 120a is disposed between the insulating film 84 and the second bus bar 83.

[0152] The second positioning portion 120b can be bonded, welded, or integrally formed with the second body 120a. As an example, the second positioning portion 120b includes a positioning post, and the first bus bar 200 is provided with a positioning hole, and the positioning post penetrates through the positioning hole of the first bus bar 200.

[0153] Exemplarily, along the first direction X, the second connecting portion 122 and the third connecting portion 123 are connected to opposite sides of the first connecting portion 121.

[0154] As an example, a space is provided between the first connecting portion 121 and the circuit board 81. In one example, along the height direction of the battery device 2, the first connecting portion 121 is disposed on a side of the second connecting portion 122 facing away from the battery cell 7, and the second positioning portion 120b is disposed on the second connecting portion 122.

[0155] In one example, both sides of the first connecting portion 121 along the first direction X are respectively connected to the wire harness assembly 8.

[0156] Exemplarily, the third connecting portion 123 is bent to form a receiving groove, and the notch faces the side of the battery cell 7.

[0157] By disposing the first connecting portion 121 between the second connecting portion 122 and the third connecting portion 123, the second positioning portion 120b is disposed on the second connecting portion 122, which makes it more convenient for the first bus bar 200 to penetrate, and the third connecting portion 123 is closer to the temperature measuring member 82, simplifies the structure of the second positioning member 120, and reduces the manufacturing difficulty and the assembly difficulty.

[0158] In one embodiment, a part of the third connecting portion 123 is disposed on a side of the temperature measuring member 82 facing away from the battery cell 7. So that the receiving structure 126 has a protective effect on the temperature measuring member 82.

[0159] In some embodiments, the second body 120a further includes a fourth connecting portion 124 and a fifth connecting portion 125. The fourth connecting portion 124 is disposed on a side of the first connecting portion 121 facing away from the third connecting portion 123, and the fifth connecting portion 125 is disposed on a side of the first connecting portion 121 facing away from the second connecting portion 122.

[0160] The fourth connecting portion 124 is connected to the second bus bar 83 on one side of the first connecting portion 121, and the fifth connecting portion 125 is connected to the second bus bar 83 on the other side of the first connecting portion 121.

[0161] Exemplarily, the fourth connecting portion 124 is disposed between the insulating film 84 and the second bus bar 83. The fifth connecting portion 125 is disposed between the insulating film 84 and the second bus bar 83.

[0162] In an embodiment of the present application, the second positioning member 120 is hot-pressed and formed with the wire harness assembly 8.

[0163] Exemplarily, during the assembly process of the battery device 2, the battery cell 7 is loaded into the box body 5. The second positioning member 120 is hot-pressed and formed with the wire harness assembly 8. The first positioning member 110 is mounted on one battery cell 7. Then, the wire harness assembly 8 is mounted on one side of the battery cell 7. The first bus bar 200 is mounted on the first positioning member 110 and the second positioning member 120, and the electrode terminals 30 of the first bus bar 200 and two adjacent battery cells 7 are connected. Other structures such as a pressing strip are installed.

[0164] The positioning accuracy of the second positioning member 120 and the wire harness assembly 8 is improved by hot-pressing and forming, and further, the positioning accuracy of the wire harness assembly 8 and the battery cell 7 is improved.

[0165] Figure 9 For Figure 2 Schematic diagram of the assembly structure of the battery cell and the positioning structure of the battery device 2 in the

[0166] As Figures 1 to 9 shown, in some embodiments of the present application, the positioning structure 100 is mounted on two adjacent battery cells 7 along the first direction X, and penetrates through the first bus bar 200 and two adjacent wire harness assemblies 8.

[0167] Exemplarily, the positioning structure 100 can be one piece or multiple pieces. In one example, one positioning structure 100 is connected to two adjacent battery cells 7 of two adjacent battery cell assemblies 6 along the first direction X. That is to say, a part of the positioning structure 100 is connected to one battery cell 7 of one battery cell assembly 6, and another part is connected to one battery cell 7 of another battery cell assembly 6.

[0168] In another example, the positioning structure 100 includes two parts, one is connected to a battery cell 7 of a battery cell assembly 6, and the other is connected to a battery cell 7 of another battery cell assembly 6.

[0169] Exemplarily, the positioning structure 100 sequentially penetrates through the wire harness assembly 8 and the first bus bar 200.

[0170] Exemplarily, the positioning structure 100 includes one positioning part or multiple positioning parts. In one example, one positioning part penetrates through two wire harness assemblies 8 simultaneously.

[0171] In another example, the positioning structure 100 includes two positioning parts, the two positioning parts are respectively opposite to two battery cells 7, and each positioning part penetrates through the wire harness assembly 8 and the first bus bar 200.

[0172] By arranging the positioning structure 100 on two battery cells 7, it is convenient to retrofit and position the existing wire harness assembly 8 and the battery cell 7, reduce the retrofit cost, and the structure is simple and easy to manufacture.

[0173] Continuing to refer to Figures 1 to 9 , in a specific embodiment of the present application, the positioning structure 100 includes two first positioning members 110, the two first positioning members 110 are respectively installed on two adjacent battery cells 7 along the first direction X, the two first positioning members 110 respectively penetrate through two adjacent wire harness assemblies 8, and both penetrate through the first bus bar 200.

[0174] Exemplarily, the first positioning member 110 is in the shape of a thin sheet. In one example, the first positioning member 110 is bonded to the battery cell 7.

[0175] One first positioning member 110 penetrates through one wire harness assembly 8, and the other first positioning member 110 penetrates through another wire harness assembly 8. Exemplarily, the first positioning member 110 can partially or completely penetrate through the wire harness assembly 8.

[0176] The first positioning member 110 sequentially penetrates through the wire harness assembly 8 and the first bus bar 200.

[0177] Exemplarily, the first positioning member 110 can be in contact with or spaced from the wire harness assembly 8.

[0178] After one first positioning member 110 penetrates through one wire harness assembly 8, it then penetrates through the first bus bar 200. After the other first positioning member 110 penetrates through another wire harness assembly 8, it then penetrates through the same first bus bar 200.

[0179] By respectively arranging the two first positioning members 110 on two battery cells 7, it is convenient for the installation of other structures, reduces the warping caused by structural avoidance and the risk of virtual soldering between the first bus bar 200 and the battery cell 7.

[0180] For example, the positioning structure 100 is a single piece and spans two battery cells 7. The part of the positioning structure 100 that extends beyond the battery cell 7 will sink, causing the electrode terminal 30 to warp, thereby causing a virtual soldering between the first bus bar 200 and the battery cell 7. The positioning structures 100 of the two first positioning members 110 do not have parts that extend beyond the battery cell 7. Therefore, the risk of warping and the virtual soldering between the first bus bar 200 and the battery cell 7 are reduced.

[0181] In one embodiment, the first positioning member 110 includes a first body 111 and a first positioning portion 112. The first positioning portion protrudes from the side of the first body 111 facing away from the battery cell 7. The first positioning portion 112 penetrates through the wire harness assembly 8 and the first bus bar 200.

[0182] Figure 10 For Figure 9 the schematic structural diagram of the first positioning member in

[0183] As Figures 1 to 10 shown, in one embodiment of the present application, the first positioning member 110 includes two first notches 113 arranged along the first direction X. The opening directions of the two first notches face away from each other; the battery cell 7 includes two electrode terminals 30 arranged along the first direction X. The first positioning member 110 is connected between the two electrode terminals 30, and parts of the two electrode terminals are respectively received in the two first notches 113.

[0184] The shape of the first notch matches the shape of the electrode terminal 30. Exemplarily, the first notch 113 can be in the shape of an arc-shaped U opening, a rectangular U opening, etc.

[0185] The two first notches 113 are respectively clamped with the two electrode terminals 30 of a battery cell 7 for limiting the first positioning member 110 along the first direction X with respect to the battery cell 7.

[0186] By partially receiving the electrode terminal 30 in the first notch 113, the positioning accuracy of the first positioning member 110 with respect to the battery cell 7 is improved, and further the positioning accuracy of the positioning structure 100 with respect to the first bus bar 200 is improved.

[0187] Figure 11 Schematic structural diagram of another battery device according to some embodiments of the present application.

[0188] As Figures 1 to 11 shown, in some embodiments of the present application, the positioning structure 100 includes a connecting body 130 and two third positioning portions 131. The two third positioning portions 131 are connected to the connecting body 130, and the connecting body is connected to two adjacent battery cells 7 along the first direction X; along the first direction X, the two third positioning portions 131 respectively penetrate through two adjacent wire harness assemblies 8 and both penetrate through the first bus bar 200.

[0189] The connecting body 130 is used to fix the third positioning portion 131 on two adjacent battery cells 7. In one example, the connecting body 130 can be in the shape of a thin sheet and adhered to the battery cell 7.

[0190] A part of the connecting body 130 is connected to one battery cell 7, and the other part is connected to another battery cell 7. Exemplarily, in the orthographic projection of the connecting body 130 along the height direction of the battery device 2 onto the battery cell 7, a part overlaps with one battery cell 7, and the other part overlaps with another battery cell 7.

[0191] As an example, the third positioning portion 131 includes positioning posts, and the first busbar 200 and the wire harness assembly 8 are provided with positioning holes, and the positioning posts penetrate through the positioning holes of the first busbar 200 and the wire harness assembly 8.

[0192] By providing two third positioning portions 131 on the connecting body 130 and connecting the connecting body 130 to two battery cells 7, the structure of the positioning structure 100 is simplified and the manufacturing cost is increased.

[0193] In some embodiments, the first busbar 200 includes a third notch, the opening of the third notch faces the second busbar 83 along the second direction Y, and both sides of the third notch are respectively cooperated with and penetrated by two third positioning portions 131. The third notch is used to avoid structures such as pressing strips.

[0194] Figure 12 For Figure 11 the schematic structural diagram of the positioning structure in the middle.

[0195] As Figures 1 to 11 As shown, in some embodiments of the present application, the connecting body 130 includes a first mounting portion 132 and two second mounting portions 133. The two second mounting portions are arranged at intervals, and second notches 134 are provided on the opposite sides. The first mounting portion 132 is connected between the two second mounting portions 133. Along the second direction Y, the first mounting portion 132 is located on one side of the second notch 134, and two third positioning portions 131 respectively protrude from the two second mounting portions 133; the battery cell 7 includes two electrode terminals 30 arranged along the first direction X. Along the first direction X, the adjacent two electrode terminals 30 of two adjacent battery cells 7 are respectively received in the second notches 134 of the two second mounting portions 133.

[0196] The shape of the second notch matches the shape of the electrode terminal 30. Exemplarily, the second notch 134 can be in the shape of an arc-shaped U opening, a rectangular U opening, etc. The openings of the second notches 134 are arranged oppositely.

[0197] Exemplarily, along the second direction Y, two second mounting portions 133 on one side of the second notch 134 are connected by the first mounting portion 132, and there is a spacing on the other side for avoiding structures such as a pressure strip.

[0198] One electrode terminal 30 of each of two adjacent battery cells 7 is placed in the second notch 134.

[0199] By connecting the third mounting portion to one side of the second notch 134, the connection body 130 can avoid other structures, which is convenient for installation. The limitation of the second notch 134 improves the limitation accuracy between the connection body 130 and multiple battery cells 7, and further improves the positioning accuracy of the positioning structure 100 for the wire harness assembly 8.

[0200] An embodiment of the present application provides an electrical device, including the battery device 2 in the above embodiment, and the battery device is used to provide electrical energy.

[0201] As Figures 1 to 12 shown, in an embodiment of the present application, a battery device 2 includes 4 battery cell assemblies 6, 2 wire harness assemblies 8, a first bus bar 200, and a positioning structure 100. The 4 battery cell assemblies 6 are arranged along the first direction X. The battery cell assembly 6 includes multiple battery cells 7 arranged along the second direction Y, and the first direction X is perpendicular to the second direction Y. The 2 wire harness assemblies 8 are arranged along the first direction X, and the wire harness assemblies are arranged on one side of the battery cell assembly 6. The wire harness assembly 8 is connected to multiple battery cells of the 2 battery cell assemblies 6. The first bus bar 200 is stacked on one side of the two adjacent wire harness assemblies 8 facing away from the battery cell assembly 6 and is connected to two adjacent battery cells 7 arranged along the first direction X.

[0202] The positioning structure 100 includes a first positioning member 110 and a second positioning member 120. The first positioning member includes a first body 111 and a first positioning portion 112. The first positioning portion protrudes from one side of the first body 111 away from the battery cell 7. The first body 111 includes two first notches 113 opened opposite to each other along the first direction X. The first body 111 is placed between two battery terminals, and at least part of the two electrode terminals 30 of the battery cell 7 is received in the two second notches 134. The first positioning member 110 penetrates through one wire harness assembly 8 and the first bus bar 200.

[0203] The second positioning member 120 is hot-pressed and formed with the wire harness assembly 8. The second positioning member 120 includes a second body 120a and a second positioning portion 120b; the second body includes a first connecting portion 121, a second connecting portion 122, and a third connecting portion 123, and the first connecting portion 121 is disposed between the second connecting portion 122 and the third connecting portion 123; the second connecting portion 122 is disposed between the battery cell 7 and the first bus bar 200, the second positioning portion 120b protrudes and connects to the side of the second connecting portion 122 away from the battery cell 7, and the third connecting portion 123 is provided with a receiving structure 126; the second positioning member 120 penetrates through the first bus bar 200. The second body 120a further includes a fourth connecting portion 124 and a fifth connecting portion 125, the fourth connecting portion is disposed on the side of the first connecting portion 121 facing away from the third connecting portion 123, and the fifth connecting portion 125 is disposed on the side of the first connecting portion 121 facing away from the second connecting portion 122.

[0204] In another embodiment of the present application, a battery device 2 includes four battery cell assemblies 6, four wire harness assemblies 8, a first bus bar 200, and a positioning structure 100. The four battery cell assemblies 6 are arranged along a first direction X. The battery cell assembly 6 includes a plurality of battery cells 7 arranged along a second direction Y, and the first direction X is perpendicular to the second direction Y; the four wire harness assemblies 8 are arranged along the first direction X, the wire harness assembly is disposed on one side of the battery cell assembly 6, and the wire harness assembly 8 is connected to the plurality of battery cells of two battery cell assemblies 6. The first bus bar 200 is stacked on one side of two adjacent wire harness assemblies 8 facing away from the battery cell assembly 6 and is connected to two adjacent battery cells 7 arranged along the first direction X.

[0205] The positioning structure 100 includes two first positioning members 110, and the two first positioning members are respectively installed on two adjacent battery cells 7 along the first direction X. The two first positioning members 110 respectively penetrate through two adjacent wire harness assemblies 8 and both penetrate through the first bus bar 200. The first positioning member 110 includes a first body 111 and a first positioning portion 112, and the first positioning portion protrudes and is provided on the side of the first body 111 facing away from the battery cell 7. The first positioning portion 112 penetrates through the wire harness assembly 8 and the first bus bar 200.

[0206] The first positioning member 110 includes two first notches 113 arranged along the first direction X, and the opening directions of the two first notches are opposite; the battery cell 7 includes two electrode terminals 30 arranged along the first direction X, the first positioning member 110 is connected between the two electrode terminals 30, and parts of the two electrode terminals are respectively received in the two first notches 113.

[0207] As Figures 1 to 12As shown, in an embodiment of the present application, a battery device 2 includes a plurality of battery cell assemblies 6, a plurality of wire harness assemblies 8, a first bus bar 200, and a positioning structure 100. The plurality of battery cell assemblies 6 are arranged along a first direction X. The battery cell assembly 6 includes a plurality of battery cells 7 arranged along a second direction Y, and the first direction X is perpendicular to the second direction Y. The plurality of wire harness assemblies 8 are arranged along the first direction X, and the wire harness assemblies are disposed on one side of the battery cell assembly 6. The wire harness assembly 8 is connected to the plurality of battery cells of the plurality of battery cell assemblies 6. The first bus bar 200 is stacked on one side of two adjacent wire harness assemblies 8 facing away from the battery cell assembly 6 and is connected to two adjacent battery cells 7 arranged along the first direction X.

[0208] The positioning structure 100 includes a connecting body 130 and two third positioning portions 131. The two third positioning portions are connected to the connecting body 130, and the connecting body is connected to two adjacent battery cells 7 along the first direction X. Along the first direction X, the two third positioning portions 131 respectively penetrate two adjacent wire harness assemblies 8 and both penetrate the first bus bar 200.

[0209] The connecting body 130 includes a first mounting portion 132 and two second mounting portions 133. The two second mounting portions are spaced apart and have second notches 134 on their opposite sides. The first mounting portion 132 is connected between the two second mounting portions 133. Along the second direction Y, the first mounting portion 132 is disposed on one side of the second notch 134. The two third positioning portions 131 respectively protrude from the two second mounting portions 133. The battery cell 7 includes two electrode terminals 30 arranged along the first direction X. Along the first direction X, the two adjacent electrode terminals 30 of two adjacent battery cells 7 are respectively received in the second notches 134 of the two second mounting portions 133.

[0210] If there is no special instruction, all the embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution. If there is no special instruction, all the technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0211] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery device, characterized in that: include: A plurality of battery cell assemblies arranged along a first direction, wherein the battery cell assemblies include a plurality of battery cells arranged along a second direction, wherein the first direction is perpendicular to the second direction; A plurality of wire harness assemblies arranged along the first direction, the wire harness assemblies being disposed on one side of the battery cell assembly, and the wire harness assemblies being connected to the plurality of battery cells of at least one of the battery cell assemblies; A first busbar, stacked on one side of two adjacent wiring harness assemblies away from the battery cell assembly, and connected to two adjacent battery cells arranged along the first direction; The positioning structure is at least partially mounted on the battery cell and penetrates at least one of the wiring harness assemblies and the first busbar.

2. The battery device according to claim 1, characterized in that: The positioning structure includes a first positioning member and a second positioning member, wherein the first positioning member is connected to the battery cell and passes through one of the wiring harness assemblies and the first busbar; The second positioning member is connected to another of the wiring harness components and passes through the first busbar.

3. The battery device according to claim 2, characterized in that: The first positioning member includes a first body and a first positioning portion, the first positioning portion protrudes from a side of the first body away from the battery monomer, and the second positioning member includes a second body and a second positioning portion, the second positioning portion protrudes from a side of the second body away from the battery monomer; The first body is connected to the battery cell, and the second body is connected to one of the wiring harness assemblies; the first positioning portion and the second positioning portion are respectively opposite to two adjacent battery cells, and both the first positioning portion and the second positioning portion penetrate the first busbar.

4. The battery device according to claim 2, characterized in that: The wiring harness assembly includes a circuit board, the circuit board is extended along the first direction, and at least a portion of the second positioning member is arranged on a side of the circuit board away from the battery cell assembly.

5. The battery device according to claim 4, characterized in that: The wiring harness assembly further includes a plurality of temperature measuring components, which are connected to the circuit board and the battery cell. The second positioning component is provided with a receiving structure, which receives at least one of the temperature measuring components.

6. The battery device according to claim 5, characterized in that: The wiring harness assembly further includes an insulating film and a plurality of second busbars disposed on the insulating film, wherein the plurality of second busbars electrically connect the battery cells of at least one of the battery cell assemblies; Along the first direction, the plurality of second current collectors are disposed on two opposite sides of the circuit board and connected to the circuit board.

7. The battery device according to claim 6, characterized in that: The second positioning member includes a second body and a second positioning portion, the second body includes a first connecting portion, a second connecting portion and a third connecting portion, and the first connecting portion is disposed between the second connecting portion and the third connecting portion; The second connection portion is disposed between the battery cell and the first current collector, the second positioning portion protrudes and is connected to a side of the second connection portion away from the battery cell, and the third connection portion is provided with a receiving structure.

8. The battery device according to claim 2, characterized in that: The second positioning member and the wiring harness assembly are formed by thermoforming.

9. The battery device according to claim 1, characterized in that: The positioning structure is installed on two adjacent battery cells along the first direction and penetrates the first busbar and two adjacent wire harness assemblies.

10. The battery device according to claim 9, characterized in that: The positioning structure includes two first positioning members, which are respectively installed on two adjacent battery cells along the first direction, and the two first positioning members respectively penetrate two adjacent wiring harness assemblies and both penetrate the first busbar.

11. The battery device according to claim 10, characterized in that: The first positioning member comprises two first notches arranged along the first direction, and the opening directions of the two first notches are opposite to each other; The battery cell includes two electrode terminals arranged along the first direction, the first positioning member is connected between the two electrode terminals, and parts of the two electrode terminals are respectively accommodated in the two first notches.

12. The battery device according to claim 9, characterized in that: The positioning structure comprises a connecting body and two third positioning parts, wherein the two third positioning parts are connected to the connecting body, and the connecting body is connected to two battery cells adjacent to each other along the first direction; Along the first direction, the two third positioning portions respectively penetrate two adjacent wiring harness assemblies and both penetrate the first busbar.

13. The battery device according to claim 12, characterized in that: The connecting body comprises a first mounting portion and two second mounting portions, the two second mounting portions are arranged at intervals, and second notches are arranged on opposite sides, the first mounting portion is connected between the two second mounting portions, and along the second direction, the first mounting portion is placed on one side of the second notch, and the two third positioning portions are respectively protruded and arranged on the two second mounting portions; The battery cell includes two electrode terminals arranged along the first direction. Along the first direction, two adjacent electrode terminals of two adjacent battery cells are respectively accommodated in two second notches of the second mounting parts.

14. An electrical device, characterized in that: A battery device comprising any one of claims 1 to 13, wherein the battery device is used to provide electrical energy.

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