Battery device and electric device

Abstract

The utility model relates to the technical field of batteries and discloses a battery device and a power utilization device.The battery device comprises a plurality of battery packs, a plurality of integrated busbars and adapters, each battery pack comprises a plurality of battery monomers, each battery monomer is provided with a pole, and the corresponding pole forms an output end of the battery pack; the plurality of integrated busbars are in one-to-one correspondence with the plurality of battery packs, each integrated busbar comprises an insulating part and a plurality of conducting strips, the conducting strips are electrically connected with the corresponding output ends, and the adapters are electrically connected with the conducting strips belonging to different integrated busbars respectively so as to electrically connect the corresponding plurality of battery packs; and at least one of the plurality of conductive sheets electrically connected with the adapter is positioned and matched with the adapter through at least one positioning structure so as to limit the movement of the adapter in a preset plane where the conductive sheets are located. Therefore, the adapter and the conducting strip can be positioned and matched through the positioning structure so as to realize the electric connection of a plurality of integrated busbars, additional positioning elements are not required to be used, and the assembly process is reduced.

Description

Technical Field

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

[0002] An integrated busbar (Cells Contact System, CCS) integrates components such as conductive sheets and sampling components (such as voltage sampling components, temperature acquisition components, etc.) in a battery device into a module, which is used to realize the series-parallel connection between multiple battery cells, as well as functions such as temperature sampling, voltage sampling, and overcurrent fusing of the battery device. Due to the limitations of the integrated busbar forming process or the size of the integrated busbar, when the overall size of the battery device is too large, multiple integrated busbars are usually used in the battery device, and electrical connection needs to be achieved between the multiple integrated busbars. However, the assembly when multiple integrated busbars are electrically connected is rather cumbersome and the efficiency is low. Summary of the Utility Model

[0003] The present application provides a battery device and an electrical device. The adapter and the conductive sheet can be positioned and matched through a positioning structure to achieve the electrical connection of multiple integrated busbars, without the need to use additional positioning elements, which is convenient for reducing the assembly process.

[0004] In a first aspect, an embodiment of the present application provides a battery device, including: multiple battery groups, multiple integrated busbars, and an adapter. The multiple battery groups are arranged in sequence. Each battery group includes multiple battery cells. Each battery cell has a pole column, and the corresponding pole columns form the output ends of the battery group. The multiple integrated busbars correspond to the multiple battery groups one by one. Each integrated busbar includes an insulating member and multiple conductive sheets. The insulating member is provided at one end where the output end of the battery group is located. The conductive sheets are fixed on the insulating member and electrically connected to the corresponding output ends. The adapter is provided on the side of the integrated busbar away from the battery group and is electrically connected to multiple conductive sheets belonging to different integrated busbars respectively to electrically connect the corresponding multiple battery groups. At least one of the multiple conductive sheets electrically connected to the adapter is positioned and matched with the adapter through at least one positioning structure to limit the movement of the adapter in a preset plane. The preset plane is parallel to the plane where the conductive sheet is located. The positioning structure includes a first positioning portion and a second positioning portion. The first positioning portion is provided on the adapter, and the second positioning portion is provided on the conductive sheet.

[0005] In the above technical solution, the adapter can be positioned and matched with at least one of the multiple conductive sheets electrically connected thereto through the positioning structure. Without using additional positioning elements, the electrical connection of multiple integrated busbars can be achieved, which is convenient for reducing the assembly process of the electrical connection between the adapter and the conductive sheet, saving the assembly time for the electrical connection of multiple integrated busbars, improving the assembly efficiency, and the positioning structure can limit the movement of the adapter in the plane where the conductive sheet is located, so that the electrical connection between the adapter and the conductive sheet is more stable, which is convenient for improving the reliability of the battery device.

[0006] In some embodiments, the first positioning portion and the second positioning portion are respectively a positioning protrusion and a first positioning hole. At least a part of the positioning protrusion protrudes from the conductive sheet or the adapter in a direction perpendicular to the plane where the conductive sheet is located, and is fitted into the first positioning hole to at least limit the movement of the adapter in multiple different directions.

[0007] In the above technical solution, through the cooperation of the positioning protrusion and the first positioning hole, the movement of the adapter in different directions within the plane where the conductive sheet is located can be restricted, so that the electrical connection between the adapter and the conductive sheet is more stable. At the same time, the above positioning structure is relatively simple to assemble, which is convenient for improving the assembly efficiency.

[0008] In some embodiments, the first positioning hole is located at the corner of the conductive sheet or the adapter and penetrates its adjacent two edges.

[0009] In the above technical solution, the first positioning hole penetrates its adjacent two edges, so that the first positioning hole forms an opening with a notch at the corner position of the conductive sheet or the adapter. By cooperating the notch with the positioning protrusion, the assembly of the positioning protrusion and the first positioning hole is more convenient, which is convenient for improving the assembly efficiency.

[0010] In some embodiments, the hole wall of the first positioning hole includes a first wall and a second wall that are sequentially arranged along the circumference and are bent and connected, and the first wall and the second wall respectively extend in a straight line.

[0011] In the above technical solution, one end of the first wall and the second wall are connected, and the other end is spaced apart, so that the first positioning hole is configured as a notch, so that the structure of the first positioning hole is relatively simple and convenient for processing and manufacturing.

[0012] In some embodiments, the first positioning hole is located on the conductive sheet or the adapter and is spaced apart from its edge.

[0013] In the above technical solution, the first positioning hole is spaced apart from the edge of the conductive sheet or the adapter, that is, the first positioning hole is located inside the conductive sheet or the adapter, so that the first positioning hole is not easily damaged, which is convenient for improving the stability of the electrical connection between the adapter and the conductive sheet.

[0014] In some embodiments, the positioning protrusion is integrally formed on one of the conductive sheet and the adapter; or, the positioning protrusion is assembled and connected to one of the conductive sheet and the adapter.

[0015] In the above technical solution, the integrally formed positioning protrusion can reduce the processing difficulty of the positioning protrusion and is convenient for improving the processing efficiency of the positioning protrusion; or, the positioning protrusion is assembled on one of the conductive sheet and the adapter, and the assembled and connected positioning protrusion can be selected, installed and adjusted according to actual needs, with higher flexibility.

[0016] In some embodiments, one of the conductive sheet and the adapter is stamped with a positioning protrusion; alternatively, one of the conductive sheet and the adapter is detachably connected to the positioning protrusion.

[0017] In the above technical solution, the positioning protrusion is formed by stamping, which is convenient for improving the processing efficiency of the positioning protrusion; alternatively, the positioning protrusion is detachably connected to one of the conductive sheet and the adapter. When the positioning protrusion is damaged during long-term use, only the positioning protrusion needs to be replaced for maintenance, which is convenient for reducing the maintenance cost.

[0018] In some embodiments, one of the conductive sheet and the adapter is formed with a threaded hole, and a part of the positioning protrusion is threadedly connected to the threaded hole, and the other part protrudes.

[0019] In the above technical solution, the positioning protrusion is threadedly connected to one of the conductive sheet and the adapter, so that the assembly method of the positioning protrusion is simpler. At the same time, the threaded connection can enhance the connection strength of the positioning protrusion, making the positioning protrusion more stable during use.

[0020] In some embodiments, the adapter includes a transition portion and two electrical connection portions. The two ends of the transition portion are respectively connected to the two electrical connection portions, and the two electrical connection portions are respectively electrically connected to the two conductive sheets. The transition portion is provided with a buffer portion that can be stretched and deformed; and / or, a buffer portion that can be stretched and deformed is connected between each electrical connection portion and the transition portion.

[0021] In the above technical solution, when the battery cell expands, the buffer portion can buffer the deformation stress of the battery cell expansion, so that the adapter is not easily deformed greatly, which is convenient for improving the stability of the adapter during operation; and / or, a buffer portion that can be stretched and deformed is provided between each electrical connection portion and the transition portion. The buffer portion can buffer the deformation stress of the battery cell expansion, so that the relative position between the electrical connection portion and the transition portion is more stable, which is convenient for improving the stability of the adapter during operation.

[0022] In some embodiments, the edge of the conductive sheet adjacent to and spaced from the adapter has a protruding portion, and the edge of the adapter has an avoidance notch. The avoidance notch is opposite to the protruding portion, and the width of the avoidance notch is greater than the width of the protruding portion.

[0023] In the above technical solution, the protruding portion and the avoidance notch are arranged opposite to each other, so that the distance between the adapter and the adjacent conductive sheet is maintained within a stable range, which is convenient for meeting the electrical clearance requirements. And the width of the avoidance notch is greater than the width of the protruding portion, so that there is enough electrical clearance between the adapter and the adjacent conductive sheet. Even if there are dimensional deviations in the manufacturing process of the protruding portion, it is not easy for arc discharge or short circuit to occur between the adjacent conductive sheet and the adapter.

[0024] In some embodiments, a plurality of second positioning holes are formed on the adapter, third positioning holes are formed on the conductive sheet, and a positioning portion is provided on the pole of the battery cell. The second positioning holes and the corresponding third positioning holes are both opposite to the positioning portion.

[0025] In the above technical solution, the second positioning holes and the corresponding third positioning holes are both opposite to the positioning portion, so that the staff can observe the positioning portion through the second positioning holes and the third positioning holes, thereby judging whether the adapter and the conductive sheet are in the normal installation positions, which is beneficial to improving the reliability of the battery device.

[0026] In some embodiments, two conductive sheets electrically connected to the adapter are arranged at intervals along a first direction and are respectively in positioning cooperation with the adapter through positioning structures. The adapter has a first center line extending along the first direction and a second center line extending along a second direction. The positioning structures corresponding to the two conductive sheets electrically connected to the adapter are respectively located on both sides of the first center line and are respectively located on both sides of the second center line. The second direction is perpendicular to the first direction, and both are parallel to the plane where the conductive sheet is located.

[0027] In the above technical solution, the second direction is perpendicular to the first direction, and the second direction and the first direction are both parallel to the plane where the conductive sheet is located. The positioning structures are respectively located on both sides of the first center line and the positioning structures are respectively located on both sides of the second center line, so that the positioning structures are approximately arranged in a diagonal form, which is convenient for improving the stability of the electrical connection between the adapter and the conductive sheet.

[0028] In a second aspect, an electrical device provided by an embodiment of the present application includes the battery device of the first aspect.

[0029] In the above technical solution, since the battery device is easy to assemble and has good stability, the assembly of the electrical device is more convenient and the stability of the electrical device can be improved. Description of the Drawings

[0030] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1 is a schematic structural diagram of an electrical device provided by some embodiments of the present application for a vehicle;

[0032] Figure 2 is an exploded view of the structure of the battery device provided by some embodiments of the present application;

[0033] Figure 3 is a schematic diagram of the battery device provided by some embodiments of the present application;

[0034] Figure 4 is Figure 3 an enlarged view of the circled area A in

[0035] Figure 5 Schematic diagrams of multiple integrated busbars assemblies provided for some embodiments of the present application;

[0036] Figure 6 For Figure 5 An enlarged view of the location marked as B in

[0037] Figure 7 Schematic diagrams of the assembly of the conductive sheet and the adapter provided for some embodiments of the present application;

[0038] Figure 8 Schematic diagrams of the assembly of the conductive sheet and the adapter provided for some embodiments of the present application;

[0039] Figure 9 Schematic diagrams of the assembly of the conductive sheet and the adapter provided for some embodiments of the present application;

[0040] Figure 10 For Figure 3 Schematic diagram of the conductive sheet shown in

[0041] Figure 11 For Figure 3 Schematic diagram of the battery cell shown in

[0042] Reference numerals: battery device 1, electrical device 2,

[0043] battery pack 10, battery cell 12, terminal post 120, positioning portion 122, battery row 14,

[0044] integrated busbar 20, insulating member 22, conductive sheet 24, protruding portion 240, third positioning hole 242, fourth positioning hole 244,

[0045] adapter 30, transition portion 32, buffer portion 320, electrical connection portion 34, avoidance notch 36, second positioning hole 38,

[0046] positioning structure 40, positioning protrusion 42, first positioning hole 43, first wall 430, second wall 432, threaded hole 45,

[0047] controller 50, motor 52,

[0048] box body 60, accommodation cavity 62, first box body 64, second box body 66,

[0049] sampling circuit board 70, connector 72. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the following will clearly describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without any creative work belong to the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled 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 are not used to describe a specific order or primary-secondary relationship.

[0052] Referring to "embodiments" in this application means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0053] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside 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 situations.

[0054] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating 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.

[0055] 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 descriptions of the same components are omitted. It should be understood that the thickness, length, width and other dimensions of various components shown in the drawings in the embodiments of this application are only illustrative and should not constitute any limitation to this application.

[0056] In this application, "a plurality of" means two or more (including two).

[0057] In this application, the battery cell may include 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-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of this application do not limit this. The battery cell may be in a cylindrical shape, a flat shape, a cuboid shape or other shapes, etc., and the embodiments of this application do not limit this either.

[0058] The battery apparatus mentioned in the embodiments of this application may refer to including one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel or in a hybrid connection through a busbar component. In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells.

[0059] As an example, the battery cell assembly may be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells with a cable tie.

[0060] In some embodiments, the battery apparatus may be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body. As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body by fixing the battery module in the box body. As an example, the battery cell assembly may also be accommodated in the box body by directly fixing a plurality of battery cells to the box body. The box body can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.

[0061] The battery cell includes a shell, an electrode assembly and an electrolyte. The shell is used to accommodate the electrode assembly and the electrolyte. In the present application, a soft-pack battery cell may refer to a battery cell using a soft outer packaging material as a shell. For example, the packaging film described herein may be used as the shell of a soft-pack battery cell. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking a lithium-ion battery as an example, the material of the positive electrode collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0062] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0063] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, battery devices, as the power source of electric vehicles, play an irreplaceable and important role.

[0064] An integrated busbar can be used in a battery device as an electrical connection component inside the battery device to achieve electrical connection between multiple battery cells. When the overall size of the battery device is too large, due to the limitations of the integrated busbar molding process or the size of the integrated busbar, multiple integrated busbars are usually used in the battery device. Multiple integrated busbars need to be electrically connected to collect the temperature and voltage of each conductive sheet to meet the battery management system (BMS) control strategy of the battery device. In related technologies, different integrated busbars are electrically connected through adapters, and additional positioning elements are required to assist in positioning when installing the adapters, making the assembly of multiple integrated busbars more cumbersome and inefficient when achieving electrical connection.

[0065] Based on the above considerations, in order to solve the problem of complex assembly when the integrated busbar is electrically connected. The present application designs a battery device, including: multiple battery groups, multiple integrated busbars and adapters, multiple battery groups are arranged in sequence, each battery group includes multiple battery cells, each battery cell has a pole, and the corresponding pole forms the output end of the battery group. Multiple integrated busbars correspond to multiple battery groups one by one, each integrated busbar includes an insulating member and multiple conductive sheets, the insulating member is arranged at one end where the output end of the battery group is located, the conductive sheet is fixed to the insulating member and the conductive sheet is electrically connected to the corresponding output end, the adapter is arranged on the side of the integrated busbar away from the battery group, and the adapter is electrically connected to multiple conductive sheets belonging to different integrated busbars respectively, so as to electrically connect the corresponding multiple battery groups, at least one of the multiple conductive sheets electrically connected to the adapter is positioned and matched with the adapter through a positioning structure to limit the movement of the adapter in the plane where the conductive sheet is located, and the positioning structure includes a first positioning portion and a second positioning portion, the first positioning portion is arranged on the adapter, and the second positioning portion is arranged on the conductive sheet.

[0066] In the above technical solution, the adapter can be positioned and matched with at least one of the multiple conductive sheets electrically connected to it through the positioning structure, and the electrical connection of multiple integrated busbars can be achieved without using additional positioning elements, which is convenient for reducing the assembly process for electrically connecting the adapter and the conductive sheet, saving the assembly time for electrically connecting multiple integrated busbars, and improving the assembly efficiency. The positioning structure can limit the movement of the adapter within the plane where the conductive sheet is located, so that the electrical connection between the adapter and the conductive sheet is more stable, which is convenient for improving the reliability of the battery device.

[0067] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships, or aircraft. A power supply system of the electrical device can be composed of the battery device disclosed in the present application.

[0068] The embodiment of the present application provides an electric device using a battery device as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0069] For the convenience of explanation, the following embodiments are described by taking a vehicle as an example of an electrical device 2 in one embodiment of the present application. Figure 1 , Figure 1The power consumption device 2 provided in some embodiments of this application is a schematic structural diagram of a vehicle. 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 vehicle, an extended-range vehicle, etc. A battery device 1 is provided inside the vehicle. The battery device 1 can be arranged at the bottom, the head, or the tail of the vehicle. The battery device 1 can be used for power supply of the vehicle. For example, the battery device 1 can be used as the operating power source of the vehicle. The vehicle may further include a controller 50 and a motor 52. The controller 50 is used to control the battery device 1 to supply power to the motor 52. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle.

[0070] In some embodiments of this application, the battery device 1 can not only be used as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0071] Please refer to Figure 2 , Figure 2 The structural explosion diagram of the battery cell 12 provided in some embodiments of this application for the battery device 1. The battery device 1 includes a box body 60 and a plurality of battery cells 12. The battery cells 12 are accommodated in the box body 60. Among them, the box body 60 is used to provide an assembly space for the battery cells 12, and the box body 60 can adopt various structures. In some embodiments, the box body 60 may include a first box body 64 and a second box body 66. The first box body 64 and the second box body 66 cover each other, and the first box body 64 and the second box body 66 jointly define an accommodation cavity 62 for accommodating the battery cells 12. The second box body 66 can be a hollow structure with one end open, and the first box body 64 can be a plate-like structure. The first box body 64 covers the open side of the second box body 66 so that the first box body 64 and the second box body 66 jointly define the accommodation cavity 62; or, the first box body 64 and the second box body 66 can also both be hollow structures with one side open (such as Figure 2 shown), and the open side of the first box body 64 covers the open side of the second box body 66. Of course, the box body 60 formed by the first box body 64 and the second box body 66 can be of various shapes, such as a cylinder, a cuboid, etc.

[0072] In the battery device 1, the plurality of battery cells 12 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the plurality of battery cells 12. The plurality of battery cells 12 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the plurality of battery cells 12 is accommodated in the box body 60; or, the battery device 1 can also be that a plurality of battery cells 12 are first connected in series, in parallel, or in a mixed connection to form the form of a battery cell assembly, and then the plurality of battery cell assemblies are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the box body 60.

[0073] Each battery cell 12 may be a secondary battery or a primary battery, wherein a secondary battery refers to a battery cell 12 that can be continuously used by activating the active material by charging after the battery cell 12 is discharged; it may also 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-acid battery, etc., which is not limited in the embodiments of the present application. The battery cell 12 may be cylindrical, flat, rectangular, or in other shapes. For example, in Figure 2 In the figure, the battery cell 12 is in the shape of a rectangular parallelepiped.

[0074] Please refer to Figures 3 - 6 and Figure 11 In an embodiment of the present application, the battery device 1 includes: a plurality of battery packs 10, a plurality of integrated busbars 20 and an adapter 30, the plurality of battery packs 10 are arranged in sequence, each battery pack 10 includes a plurality of battery cells 12, each battery cell 12 has a pole 120, and the corresponding pole 120 forms the output end of the battery pack 10, the plurality of integrated busbars 20 correspond to the plurality of battery packs 10 one by one, each integrated busbar 20 includes an insulating member 22 and a plurality of conductive sheets 24, the insulating member 22 is provided at one end where the output end of the battery pack 10 is located, then the insulating member 22 and the output end of the battery pack 10 are located at the same end of the battery pack 10, the conductive sheet 24 is fixedly provided on the insulating member 22 and the conductive sheet 24 is electrically connected to the corresponding output end, and the adapter 30 is provided at the integrated busbar 20 away from On one side of the battery pack 10, the adapter 30 is electrically connected to multiple conductive sheets 24 belonging to different integrated busbars 20, respectively, to electrically connect the corresponding multiple groups of battery packs 10, and at least one of the multiple conductive sheets 24 electrically connected to the adapter 30 is positioned and matched with the adapter 30 through a positioning structure 40 to limit the movement of the adapter 30 within a preset plane, and the preset plane is parallel to the plane where the conductive sheets 24 are located; wherein the positioning structure 40 includes a first positioning portion and a second positioning portion, the first positioning portion is arranged on the adapter 30, and the second positioning portion is arranged on the conductive sheet 24, then the adapter 30 and the conductive sheet 24 are positioned and matched through the positioning structure 40, which means that the first positioning portion and the second positioning portion are positioned and matched to achieve positioning and matching of the adapter 30 and the conductive sheet 24.

[0075] It can be understood that the battery pack 10 can have multiple output terminals, and the multiple output terminals can be respectively positive output terminals and negative output terminals. The battery pack 10 is electrically connected to other components through its output terminals. For example, the battery pack 10 is electrically connected to other battery packs 10 through its output terminals. At least one pole 120 in the battery pack 10 can be formed as the positive output terminal of the battery pack 10, and at least one pole 120 can be formed as the negative output terminal of the battery pack 10.

[0076] It can be seen that the conductive sheet 24 is fixedly arranged on the insulating part 22, so that the insulating part 22 can play a role in supporting the conductive sheet 24. At the same time, a plurality of conductive sheets 24 can be integrated on the insulating part 22, so that the assembly of the integrated busbar 20 and the battery pack 10 is more convenient. For example, by welding, clamping, injection molding connection, bonding, or hot pressing a plurality of conductive sheets 24 on the insulating part 22, so that the plurality of conductive sheets 24 and the insulating part 22 form a whole, and then integrally assembling it on the battery pack 10, so as to simplify the assembly process of the integrated busbar 20 and the battery pack 10; the conductive sheet 24 is electrically connected to the corresponding output end, and the adapter 30 is electrically connected to a plurality of conductive sheets 24 belonging to different integrated busbars 20 respectively. After different integrated busbars 20 are electrically connected to the adapter 30 through their conductive sheets 24, the electrical connection between the plurality of integrated busbars 20 is realized, thereby realizing the electrical connection between the battery packs 10 corresponding to the plurality of integrated busbars 20 (the electrical connection between the battery packs 10 corresponding to the plurality of integrated busbars 20 can be series connection, parallel connection or mixed connection).

[0077] Optionally, the insulating part 22 uses polyethylene terephthalate film (PET) as the material. The above material has good electrical insulation performance, can effectively reduce the possibility of electric leakage of the battery device 1. At the same time, the above material has a wide temperature resistance range and can work stably in the temperature range of -70°C to 150°C, and the short-term temperature resistance can reach 200°C. Even if the battery device 1 generates a large amount of heat during operation, the insulating part 22 can still maintain a stable working effect. Moreover, the above material can be formed by processes such as hot pressing, laminating, and printing, which is suitable for large-scale automated production and is convenient for improving the manufacturing efficiency of the integrated busbar 20.

[0078] In addition, at least one of the plurality of conductive sheets 24 electrically connected to the adapter 30 is in positioning cooperation with the adapter 30 through at least one positioning structure 40 to limit the movement of the adapter 30 in a preset plane. The preset plane is parallel to the plane where the conductive sheet 24 is located. For example, the positioning structure 40 can be used to limit the movement and rotation of the adapter 30 relative to the conductive sheet 24 in the preset plane, so that the assembly between the adapter 30 and the conductive sheet 24 is more convenient.

[0079] In the related art, by placing an additional positioning element on the battery cell, the positioning element is arranged independently of the adapter and the conductive sheet. For example, positioning posts are formed on the positioning element, and the positioning posts pass through the adapter and the conductive sheet to play a role in positioning the adapter, so that the adapter and the conductive sheet are indirectly positioned through the positioning element. The assembly of the adapter and the conductive sheet is relatively cumbersome. However, for the battery device 1 according to the embodiment of the present application, the setting of the positioning structure 40 makes the assembly between the adapter 30 and the conductive sheet 24 simpler, which is convenient for subsequent fixing of the adapter 30 and the conductive sheet 24 to achieve a reliable electrical connection between the adapter 30 and the conductive sheet 24, thereby enabling the electrical connection between multiple integrated busbars 20, facilitating the reduction of the assembly process for the electrical connection between the adapter 30 and the conductive sheet 24, saving the assembly time for the electrical connection of multiple integrated busbars 20, and improving the assembly efficiency.

[0080] It can be understood that at least one of the multiple conductive sheets 24 electrically connected to the adapter 30 is in positioning cooperation with the adapter 30 through at least one positioning structure 40 to limit the movement of the adapter 30 in a preset plane, which may include the following examples: Example 1, one of the multiple conductive sheets 24 electrically connected to the adapter 30 is in positioning cooperation with the adapter 30 through one positioning structure 40 to limit the movement of the adapter 30 in a preset plane; Example 2, one of the multiple conductive sheets 24 electrically connected to the adapter 30 is in positioning cooperation with the adapter 30 through multiple positioning structures 40 to limit the movement of the adapter 30 in a preset plane; Example 3, among the multiple conductive sheets 24 electrically connected to the adapter, each of at least two conductive sheets 24 is in positioning cooperation with the adapter 30 through at least one positioning structure 40 to limit the movement of the adapter 30 in a preset plane.

[0081] It can be seen that for a single adapter 30, the number of positioning structures 40 for realizing the positioning of the adapter 30 can be one or more; when the number of positioning structures 40 for realizing the positioning of the adapter 30 is one, the positioning structure 40 can limit the movement of the adapter 30 in a preset plane through its own structure, and when the number of positioning structures 40 for realizing the positioning of the adapter 30 is multiple, the positioning structures 40 can limit the movement of the adapter 30 in a preset plane through the cooperation of their own structures and quantities. In addition, when the number of positioning structures 40 for realizing the positioning of the adapter 30 is multiple, the multiple positioning structures 40 can be arranged corresponding to the same conductive sheet 24 or at least two conductive sheets 24; in other words, among the multiple conductive sheets 24 electrically connected to the adapter 30, the number of conductive sheets 24 corresponding to the positioning structure 40 is less than or equal to the total number of multiple conductive sheets 24 electrically connected to the adapter 30.

[0082] Next, taking the example where the adapter 30 is electrically connected to two conductive sheets 24 respectively belonging to different integrated busbars 20, those skilled in the art can easily understand the implementation scheme in which the adapter 30 is electrically connected to three or more conductive sheets 24 after reading the following description.

[0083] One of the conductive sheets 24 is positioned and cooperated with the adapter 30 through a positioning structure 40, and the other conductive sheet 24 is not positioned and cooperated with the adapter 30 through the positioning structure 40; or, one of the conductive sheets 24 is positioned and cooperated with the adapter 30 through multiple positioning structures 40, and the other conductive sheet 24 is not positioned and cooperated with the adapter 30 through the positioning structure 40; or, one of the conductive sheets 24 is positioned and cooperated with the adapter 30 through at least one positioning structure 40, and the other conductive sheet 24 is positioned and cooperated with the adapter 30 through at least one positioning structure 40, and the number of the corresponding positioning structures 40 of the two conductive sheets 24 can be equal or unequal.

[0084] In the embodiment of the present application, after the adapter 30 is positioned and cooperated with the conductive sheet 24, the fixed connection manner between the adapter 30 and the conductive sheet 24 is not specifically limited. For example, the adapter 30 and the conductive sheet 24 are fixed by welding, so that the adapter 30 is not easily separated from the conductive sheet 24. Even when the battery device 1 is subjected to vibration or external force, the conductive sheet 24 and the adapter 30 can still maintain a stable electrical connection, further improving the stability of the battery device 1.

[0085] It can be understood that in the embodiment of the present application, the arrangement manner of the multiple battery cells 12 of the battery pack 10 is not specifically limited; for example, the battery pack 10 may include at least one row of battery rows 14, and the battery row 14 includes multiple battery cells 12 arranged in sequence along a first arrangement direction. If the battery pack 10 includes multiple rows of battery rows 14, the multiple rows of battery rows 14 may be arranged in sequence along a second arrangement direction, the first arrangement direction and the second arrangement direction are perpendicular, and one of the first arrangement direction and the second arrangement direction is the length direction of the battery device 1, and the other is the width direction of the battery device 1.

[0086] Please refer to Figures 3 - 9, in some embodiments, the first positioning portion and the second positioning portion are respectively a positioning protrusion 42 and a first positioning hole 43. Then, the first positioning portion is the positioning protrusion 42 and the second positioning portion is the first positioning hole 43, or the first positioning portion is the first positioning hole 43 and the second positioning portion is the positioning protrusion 42. At least a part of the positioning protrusion 42 protrudes from the conductive sheet 24 or the adapter 30 in a direction perpendicular to the plane where the conductive sheet 24 is located, and the above-mentioned at least part of the positioning protrusion 42 is engaged with the first positioning hole 43 to limit the movement of the adapter 30 in multiple different directions. In the above solution, the first positioning hole 43 can be formed on the adapter 30, the positioning protrusion 42 is provided on the conductive sheet 24, and at least a part of the positioning protrusion 42 protrudes from the conductive sheet 24 in a direction perpendicular to the plane where the conductive sheet 24 is located and away from the battery cell 12; or, the first positioning hole 43 can also be formed on the conductive sheet 24, the positioning protrusion 42 is provided on the adapter 30, and at least a part of the positioning protrusion 42 protrudes from the adapter 30 in a direction perpendicular to the plane where the conductive sheet 24 is located and towards the battery cell 12.

[0087] It can be seen that through the cooperation of the positioning protrusion 42 and the first positioning hole 43, at least a part of the positioning protrusion 42 can be located in the first positioning hole 43, effectively restricting the freedom degree of the positioning protrusion 42 in the first positioning hole 43, so that the positioning structure 40 can restrict the movement of the adapter 30 in different directions within the preset plane, making the electrical connection between the adapter 30 and the conductive sheet 24 more convenient and facilitating the improvement of the assembly convenience of the battery device 1.

[0088] In addition, the design of the positioning protrusion 42 and the first positioning hole 43 makes the assembly process more intuitive and simple. The staff only needs to align the positioning protrusion 42 with the first positioning hole 43 and insert it to achieve the positioning cooperation between the adapter 30 and the conductive sheet 24, simplifying the assembly process of the adapter 30 and the conductive sheet 24 and improving the assembly efficiency of multiple integrated busbars 20.

[0089] Exemplarily, if there is one positioning structure 40 corresponding to the adapter 30, the cross-sectional shapes of both the positioning protrusion 42 and the first positioning hole 43 can be non-circular (such as oval, polygon, etc.). The peripheral wall of the first positioning hole 43 can be a closed ring or an open ring, so as to use the cooperation of the positioning protrusion 42 and the first positioning hole 43 to limit the movement and rotation of the adapter 30 in a preset plane. If there are multiple positioning structures 40 corresponding to the adapter 30, the cross-sectional shapes of both the positioning protrusion 42 and the first positioning hole 43 can be set more flexibly, and can be circular or non-circular. The peripheral wall of the first positioning hole 43 can be a closed ring or an open ring, so as to use the cooperation of multiple positioning protrusions 42 and multiple first positioning holes 43 to limit the movement and rotation of the adapter 30 in a preset plane. It can be understood that when the cross-sectional shapes of both the positioning protrusion 42 and the first positioning hole 43 are circular, a single positioning structure 40 can be used to limit the movement of the adapter 30 in multiple different directions, and multiple positioning structures 40 cooperate to limit the rotation of the adapter 30 in a preset plane. When the cross-sectional shapes of both the positioning protrusion 42 and the first positioning hole 43 are non-circular, a single positioning structure 40 can be used to limit the movement of the adapter 30 in multiple different directions and limit the rotation of the adapter 30 in a preset plane, and multiple positioning structures 40 cooperate to further limit the rotation of the adapter 30 in a preset plane.

[0090] Please refer to Figures 3 - 7 , in some embodiments, the first positioning hole 43 is located at the corner of the conductive sheet 24 or the adapter 30 and penetrates through its adjacent two edges. For example, the first positioning hole 43 is located at the corner of the conductive sheet 24 and the first positioning hole 43 penetrates through the adjacent two edges of the conductive sheet 24. Another example is that the first positioning hole 43 is located at the corner of the adapter 30 and the first positioning hole 43 penetrates through the adjacent two edges of the adapter 30. Then the first positioning hole 43 forms an opening with a notch at the corner position of the conductive sheet 24 or the adapter 30, which is convenient for reducing the material consumption for manufacturing the first positioning hole 43, saving costs, and the positioning protrusion 42 can be fitted into the first positioning hole 43 through the notch, or the positioning protrusion 42 is fitted into the first positioning hole 43 along the direction perpendicular to the plane where the conductive sheet 24 is located, so that the assembly of the positioning protrusion 42 and the first positioning hole 43 is more convenient and the assembly process of the adapter 30 and the conductive sheet 24 is simplified. It can be understood that when there are multiple positioning structures 40 corresponding to the adapter 30, if the multiple positioning structures 40 are respectively located at different corner positions, the arrangements of the multiple positioning structures 40 are relatively scattered, and the notches of the multiple first positioning holes 43 face different directions, so as to use the cooperation of the multiple positioning structures 40 to better limit the rotation of the adapter 30 in a preset plane.

[0091] Exemplarily, the first positioning hole 43 is located at the corner of the conductive sheet 24, and the positioning protrusion 42 can be provided at the corner of the adapter 30; while the first positioning hole 43 is located at the corner of the adapter 30, the positioning protrusion 42 can be provided at the corner of the conductive sheet 24. For example, the conductive sheet 24 is stamped with the positioning protrusion 42.

[0092] Please refer to Figures 3 - 7 , in some embodiments, the hole wall of the first positioning hole 43 includes a first wall 430 and a second wall 432 that are sequentially arranged along the circumferential direction and are bent and connected, and the first wall 430 and the second wall 432 extend along straight lines respectively.

[0093] It can be seen that one end of the first wall 430 and the second wall 432 are connected, and the other ends are spaced apart, so that the first positioning hole 43 is configured as an opening with a notch, and both the first wall 430 and the second wall 432 extend along straight lines, so that the structure of the first positioning hole 43 is relatively simple and convenient for processing and manufacturing. It can be understood that the outer peripheral wall of the positioning protrusion 42 can include a third wall and a fourth wall that are sequentially arranged along the circumferential direction and are bent and connected. When the positioning protrusion 42 is fitted into the first positioning hole 43, the third wall abuts against the first wall 430, and the fourth wall abuts against the second wall 432; Exemplarily, the outer peripheral wall of the positioning protrusion 42 is formed into a square structure.

[0094] For example, the first positioning hole 43 includes a first wall 430 and a second wall 432. One end of the first wall 430 is connected to one end of the second wall 432, and the other end of the first wall 430 and the other end of the second wall 432 are spaced apart, and the extending directions of the first wall 430 and the second wall 432 are perpendicular to each other, so that the hole wall of the first positioning hole 43 is configured as an "L" shape, with a relatively simple structure and convenient for processing and manufacturing.

[0095] Please refer to Figure 8 and Figure 9 , in some embodiments, the first positioning hole 43 is located on the conductive sheet 24 or the adapter 30 and is spaced apart from its edge. For example, the first positioning hole 43 is located on the conductive sheet 24, and the first positioning hole 43 is spaced apart from the edge of the conductive sheet 24. Another example is that the first positioning hole 43 is located on the adapter 30, and the first positioning hole 43 is spaced apart from the edge of the adapter 30.

[0096] It can be seen that the first positioning hole 43 is spaced apart from the edge of the conductive sheet 24 or the adapter 30, that is, the first positioning hole 43 is located inside the conductive sheet 24 or the adapter 30. The first positioning hole 43 is not easily contacted by other components, so that the first positioning hole 43 is not easily damaged, which is convenient for improving the stability of the electrical connection between the adapter 30 and the conductive sheet 24.

[0097] Please refer to Figure 8 and Figure 9, in some embodiments, the positioning protrusion 42 is integrally formed on one of the conductive sheet 24 and the adapter 30; alternatively, the positioning protrusion 42 is assembled and connected to one of the conductive sheet 24 and the adapter 30.

[0098] It can be seen that the integrally formed positioning protrusion 42 can be tightly combined with one of the conductive sheet 24 and the adapter 30 to form a whole, thereby improving the strength and stability of the entire structure, making the cooperation between the positioning protrusion 42 and the first positioning hole 43 more stable. Moreover, the integrally formed positioning protrusion 42 can reduce the processing difficulty of the positioning protrusion 42, avoid the splicing and assembly processes of multiple components in the traditional process, simplify the manufacturing process, and facilitate improving the processing efficiency of the positioning protrusion 42; alternatively, the positioning protrusion 42 is assembled and connected to one of the conductive sheet 24 and the adapter 30. The assembled and connected positioning protrusion 42 can be selected, installed, and adjusted according to actual needs. The assembled and connected positioning protrusion 42 can be applicable to adapters 30 or conductive sheets 24 of different sizes. At the same time, the staff can adjust the size of the positioning protrusion 42 according to actual needs, so that the positioning protrusion 42 has higher flexibility.

[0099] It can be understood that the positioning protrusion 42 can be located on the adapter 30, and the first positioning hole 43 is located on the conductive sheet 24; or, the positioning protrusion 42 is located on the conductive sheet 24, and the first positioning hole 43 is located on the adapter 30. It can be seen that the above settings make the setting positions of the positioning protrusion 42 and the first positioning hole 43 more flexible, facilitating adaptation to different installation environments.

[0100] Please refer to Figure 8 and Figure 9 , in some embodiments, one of the conductive sheet 24 and the adapter 30 is stamped with the positioning protrusion 42; alternatively, one of the conductive sheet 24 and the adapter 30 is detachably connected to the positioning protrusion 42.

[0101] It can be seen that the positioning protrusion 42 can be formed by stamping. Stamping is an efficient processing method that can mass-produce positioning protrusions 42 with the same shape and size in a short time, facilitating improving the processing efficiency of the positioning protrusion 42. At the same time, stamping can make full use of the sheet material, reduce material waste, maximize the material utilization rate, and reduce production costs; alternatively, the positioning protrusion 42 is detachably connected to one of the conductive sheet 24 and the adapter 30. When the positioning protrusion 42 is damaged during long-term use, only the positioning protrusion 42 needs to be replaced for maintenance, without replacing the entire component, facilitating reducing the maintenance cost. At the same time, the staff can conveniently replace the positioning protrusion 42 with different shapes, sizes, or materials according to different application scenarios or customer requirements to meet different needs.

[0102] Please refer to Figure 9, in some embodiments, one of the conductive sheet 24 and the adapter 30 is formed with a threaded hole 45, a part of the positioning protrusion 42 is threadedly connected to the threaded hole 45, and the other part protrudes.

[0103] It can be seen that the positioning protrusion 42 is threadedly connected to one of the conductive sheet 24 and the adapter 30, so that the assembly and disassembly methods of the positioning protrusion 42 are simpler, which is convenient for improving the working efficiency of the staff to assemble and disassemble the positioning protrusion 42. At the same time, the threaded connection can enhance the connection strength of the positioning protrusion 42, so that the connection strength between the positioning protrusion 42 and one of the conductive sheet 24 and the adapter 30 is higher, and the positioning protrusion 42 is not likely to be disengaged during use, making the positioning protrusion 42 more stable during use.

[0104] Exemplarily, the positioning protrusion 42 is a threaded fastener (such as a bolt), the screw of the bolt can be threadedly engaged with one of the conductive sheet 24 and the adapter 30, and the head of the bolt can protrude from the threaded hole 45, so that the head of the bolt can be positioned and engaged with the first positioning hole 43, which is convenient for improving the stability of the cooperation between the positioning protrusion 42 and the first positioning hole 43.

[0105] Please refer to Figures 3 - 9 , in some embodiments, the adapter 30 includes a transition portion 32 and two electrical connection portions 34. The two ends of the transition portion 32 are respectively connected to the two electrical connection portions 34, and the two electrical connection portions 34 are respectively electrically connected to the two conductive sheets 24. Wherein, the transition portion 32 is provided with a buffer portion 320 that can be stretched and deformed; and / or, a buffer portion 320 that can be stretched and deformed is connected between each electrical connection portion 34 and the transition portion 32.

[0106] It can be seen that the transition portion 32 is located between the two electrical connection portions 34, and the transition portion 32 is provided with a buffer portion 320 that can be stretched and deformed. When the battery cell 12 expands, the buffer portion 320 can buffer the deformation stress generated by the expansion of the battery cell 12 and relieve the stress brought by the expansion of the battery cell 12. The buffer portion 320 can undergo a certain amount of stretching deformation following the expansion of the battery cell 12, so that the adapter 30 is not likely to undergo large deformation. At the same time, when the battery device 1 vibrates, the buffer portion 320 can also buffer the impact on the adapter 30 generated by the vibration, so that the installation position of the adapter 30 can be more stable, which is convenient for improving the stability of the adapter 30 during operation; and / or, a buffer portion 320 that can be stretched and deformed is provided between each electrical connection portion 34 and the transition portion 32. The buffer portion 320 can effectively buffer the deformation stress generated when the battery cell 12 expands and the impact generated when the battery device 1 vibrates, so that large deformation is not likely to occur between the electrical connection portion 34 and the transition portion 32, making the relative position between the electrical connection portion 34 and the transition portion 32 more stable, which is convenient for improving the stability of the adapter 30 during operation.

[0107] In the above solution, whether the transition part 32 is provided with a buffer part 320, or a buffer part 320 is connected between each electrical connection part 34 and the transition part 32, the setting of the buffer part 320 can reduce the pulling between the adapter 30 and the conductive sheet 24 caused by the expansion of the battery cell 12, which is beneficial to improving the electrical connection reliability between the adapter 30 and the conductive sheet 24.

[0108] Please refer to Figure 5 and Figure 6 , in some embodiments, the edge of the conductive sheet 24 adjacent to and spaced from the adapter 30 has a protrusion 240, and the edge of the adapter 30 has an avoidance notch 36. The avoidance notch 36 is opposite to the protrusion 240, and the width of the avoidance notch 36 is greater than the width of the protrusion 240.

[0109] It can be seen that the conductive sheet 24 with the protrusion 240 is not positioned and cooperated with the adapter 30 through the positioning structure 40, nor is it directly electrically connected to the adapter 30. The protrusion 240 is formed on the side of the above conductive sheet 24 facing the adapter 30, and the protrusion 240 is arranged opposite to the avoidance notch 36, so that the distance between the adapter 30 and the adjacent conductive sheet 24 is maintained within a stable range, which is convenient to meet the requirements of electrical clearance, and it is not easy to generate arc discharge or short circuit, and it is convenient to improve the working stability of the adapter 30.

[0110] In addition, the width of the avoidance notch 36 (such as Figure 6 L2 in Figure 6 ) is greater than the width of the protrusion 240 (such as L1 in

[0111] ), so that there is sufficient electrical clearance between the adapter 30 and the adjacent conductive sheet 24. Even if there are dimensional deviations in the manufacturing process of the protrusion 240, or there are assembly errors in the relative positions of the adapter 30 and the adjacent conductive sheet 24, the distance between the adapter 30 and the adjacent conductive sheet 24 can still be maintained within a relatively stable range, so that it is not easy to occur arc discharge or short circuit between the adjacent conductive sheet 24 and the adapter 30. Figures 7 - 11

[0112] It can be seen that the second positioning hole 38 and the corresponding third positioning hole 242 are both opposite to the positioning portion 122, so that the staff or the inspection agency can observe the positioning portion 122 through the second positioning hole 38 and the third positioning hole 242, thereby determining whether the adapter 30 and the conductive sheet 24 are in the normal installation positions, making the installation positions of the battery cell 12, the adapter 30 and the conductive sheet 24 more accurate, facilitating the subsequent welding process of the battery cell 12, the adapter 30 and the conductive sheet 24, reducing the risk of false soldering, and being beneficial to improving the reliability of the battery device 1.

[0113] Exemplarily, the battery device 1 includes a plurality of battery packs 10 and a plurality of integrated busbars 20. The plurality of integrated busbars 20 and the plurality of battery packs 10 correspond to each other one by one. The staff can first place the integrated busbar 20 on the corresponding battery pack 10. When the staff or the inspection agency can observe the positioning portion 122 through the third positioning hole 242, it indicates that the conductive sheet 24 is in the correct installation position, and then weld the integrated busbar 20 to the corresponding battery pack 10 so that the plurality of battery cells 12 can maintain stable electrical connection. Then, the adapter 30 is fitted to the plurality of conductive sheets 24 belonging to different integrated busbars 20. When the staff or the inspection agency can observe the positioning portion 122 through the second positioning hole 38 and the third positioning hole 242, it indicates that the adapter 30 is in the correct installation position, and then weld the adapter 30 to the plurality of conductive sheets 24 belonging to different integrated busbars 20 so that the plurality of battery packs 10 can maintain stable electrical connection.

[0114] Please refer to Figures 3 - 9 , in some embodiments, two conductive sheets 24 electrically connected to the adapter 30 are arranged at intervals along a first direction, and the above-mentioned conductive sheets 24 are respectively in positioning cooperation with the adapter 30 through a positioning structure 40. The adapter 30 has a first center line extending along the first direction and a second center line extending along a second direction. The positioning structures 40 corresponding to the two conductive sheets 24 electrically connected to the adapter 30 are respectively located on both sides of the first center line, and the above-mentioned positioning structures 40 are respectively located on both sides of the second center line. The second direction is perpendicular to the first direction, and both are parallel to the plane where the conductive sheet 24 is located.

[0115] It can be seen that the second direction is perpendicular to the first direction, and the second direction and the first direction are both parallel to the plane where the conductive sheet 24 is located. The plurality of positioning structures 40 corresponding to the adapter 30 are respectively located on both sides of the first center line (such as Figure 7 L4 in Figure 7 ), and the above-mentioned plurality of positioning structures 40 are respectively located on both sides of the second center line (such as

[0116] Exemplarily, each of the two conductive sheets 24 electrically connected to the adapter 30 and the adapter 30 are respectively positioned and mated through a positioning structure 40. The plurality of conductive sheets 24 are arranged at intervals along the width direction of the battery device 1. The first center line of the adapter 30 extends along the width direction of the battery device 1, and the second center line of the adapter 30 extends along the length direction of the battery device 1. The two positioning structures 40 are respectively located on both sides of the first center line, and at the same time, the two positioning structures 40 are respectively located on both sides of the second center line, so that the two positioning structures 40 are approximately arranged in a diagonal form, which is convenient for improving the stability of the electrical connection between the adapter 30 and the conductive sheet 24.

[0117] Please refer to Figures 3 - 6 , in some embodiments, the integrated busbar 20 further includes a sampling circuit board 70 and a connector 72. The sampling circuit board 70 is fixedly provided on the insulating member 22, and the sampling circuit board 70 is arranged on one side of the plurality of conductive sheets 24. The connector 72 is arranged at one end of the sampling circuit board 70. The sampling circuit board 70 and the connector 72 are electrically connected. The sampling circuit board 70 is respectively electrically connected to each conductive sheet 24. The sampling circuit board 70 can collect the temperature and voltage of the battery cell 12. The connector 72 can collect the temperature and voltage data of the battery cell 12 transmitted by the sampling circuit board 70, and the connector 72 can transmit the collected data to other components to meet the control strategy of the battery management system of the battery device 1, improving the stability of the operation of the battery device 1.

[0118] It can be understood that the integrated busbar 20 may further include a plurality of sampling circuit boards 70 and a plurality of connectors 72. For example, the plurality of battery cells 12 in the battery pack 10 are arranged in sequence along the length direction and the width direction of the battery device 1, so that the plurality of battery cells 12 are arranged in multiple rows and multiple columns. Then, the plurality of conductive sheets 24 are also arranged in multiple rows and multiple columns. The plurality of sampling circuit boards 70 can be respectively arranged between the plurality of battery cells 12 arranged in sequence along the length direction of the battery device 1, or the plurality of sampling circuit boards 70 can be respectively arranged between the plurality of battery cells 12 arranged in sequence along the width direction of the battery device 1, so that the plurality of sampling circuit boards 70 can be more conveniently electrically connected to each conductive sheet 24, which is convenient for meeting the control strategy of the battery management system of the battery device 1.

[0119] Please refer to Figures 3 - 7 , in some embodiments, a fourth positioning hole 244 is further formed on the conductive sheet 24. The insulating member 22 is formed with an opening for the positioning post of the tooling fixture to pass through. The positioning post on the tooling fixture is adapted to cooperate with the fourth positioning hole 244 through the opening, so that the assembly of the insulating member 22 and the conductive sheet 24 is more convenient, making the setting position of the conductive sheet 24 on the insulating member 22 more stable, which is convenient for improving the reliability of the integrated busbar 20.

[0120] In some embodiments, the insulating member 22 is formed by film molding. The processing technology of film molding is relatively simple, and the cost of the insulating member 22 formed by film molding is relatively low. At the same time, the insulating member 22 formed by film molding can be fixed to the conductive sheet 24 by hot pressing. The process efficiency of hot pressing is relatively high, which reduces the time required for fixing the insulating member 22 and the conductive sheet 24 and improves the work efficiency.

[0121] In a second aspect, an electrical device 2 provided by an embodiment of the present application includes the battery device 1 of the first aspect.

[0122] In the above technical solution, since the battery device 1 is easy to assemble and has good stability, the assembly of the electrical device 2 is more convenient, and the stability of the electrical device 2 can be improved.

[0123] Specific embodiments of the battery device 1 of the present application will be described below.

[0124] Embodiment 1:

[0125] Please refer to Figures 3 - 7 、 Figure 10 and Figure 11 , the battery device 1 includes multiple groups of battery packs 10, multiple integrated busbars 20, and adapters 30.

[0126] The multiple groups of battery packs 10 are arranged in sequence along the first direction. Each group of battery packs 10 includes multiple battery cells 12. Each battery cell 12 has a pole 120, and the corresponding poles 120 are formed as the output terminals of the battery pack 10.

[0127] The multiple integrated busbars 20 correspond to the multiple groups of battery packs 10 one by one. Each integrated busbar 20 includes an insulating member 22 and multiple conductive sheets 24. The insulating member 22 is disposed at one end of the output terminal of the battery pack 10, and the conductive sheets 24 are fixed to the insulating member 22 and electrically connected to the corresponding output terminals. Figure 3 and Figure 5 show two groups of battery packs 10 and the corresponding two integrated busbars 20.

[0128] The adapter 30 is disposed on the side of the integrated bus bar 20 facing away from the battery pack 10, and the adapter 30 is electrically connected to two conductive sheets 24 belonging to different integrated bus bars 20 respectively to electrically connect two adjacent battery packs 10. The two conductive sheets 24 electrically connected to the adapter 30 are arranged at intervals in the first direction. Each of the above-mentioned conductive sheets 24 is in positioning cooperation with the adapter 30 through a positioning structure 40. The adapter 30 has a first center line extending in the first direction and a second center line extending in the second direction. The positioning structures 40 corresponding to the two conductive sheets 24 electrically connected to the adapter 30 are respectively located on both sides of the first center line and on both sides of the second center line. The second direction is perpendicular to the first direction, and both are parallel to the plane where the conductive sheet 24 is located. The positioning structure 40 includes a positioning protrusion 42 and a first positioning hole 43. The positioning protrusion 42 is integrally formed on the conductive sheet 24 and protrudes from the conductive sheet 24. The positioning protrusion 42 is located at the corner of the conductive sheet 24. The first positioning hole 43 is located at the corner of the adapter 30 and penetrates two adjacent edges of the adapter 30. The hole wall of the first positioning hole 43 includes a first wall 430 and a second wall 432 that are sequentially arranged along the circumference and are bent and connected. The first wall 430 and the second wall 432 extend along a straight line respectively. The positioning protrusion 42 is fitted into the first positioning hole 43 to limit the movement of the adapter 30 in multiple different directions in the preset plane. The cooperation of the two positioning structures 40 can limit the rotation of the adapter 30 in the preset plane.

[0129] The adapter 30 further includes a transition portion 32 and two electrical connection portions 34. The two ends of the transition portion 32 are respectively connected to the two electrical connection portions 34. The two electrical connection portions 34 are respectively electrically connected to the two conductive sheets 24. The edge of the conductive sheet 24 adjacent to and spaced from the adapter 30 has a protruding portion 240. The edge of the adapter 30 has an avoidance notch 36. The avoidance notch 36 is opposite to the protruding portion 240, and the width of the avoidance notch 36 is greater than the width of the protruding portion 240. A plurality of second positioning holes 38 are formed on the adapter 30, a third positioning hole 242 is formed on the conductive sheet 24, and a positioning portion 122 is provided on the pole 120 of the battery cell 12. The second positioning hole 38 and the corresponding third positioning hole 242 are both opposite to the positioning portion 122.

[0130] Embodiment Two

[0131] Please refer to Figures 3 - 6 、 Figure 8 ., the structure of the battery device 1 provided in Embodiment Two is substantially the same as that of the battery device 1 in Embodiment One. The difference is that: the first positioning hole 43 is located on the conductive sheet 24 and is spaced from the edge of the conductive sheet 24. The adapter 30 is stamped with a positioning protrusion 42, and the positioning protrusion 42 is fitted into the first positioning hole 43 to limit the movement of the adapter 30 in multiple different directions in the preset plane.

[0132] Embodiment 3

[0133] Please refer to Figures 3 - 6 and Figures 9 - 11 . The structure of the battery device 1 provided in Embodiment 3 is substantially the same as that of the battery device 1 in Embodiment 1. The difference is that: the first positioning hole 43 is located on the conductive sheet 24, and the first positioning hole 43 is spaced from the edge of the conductive sheet 24. The adapter 30 is formed with a threaded hole 45. A part of the positioning protrusion 42 is threadedly connected to the threaded hole 45, and the other part protrudes. The part of the positioning protrusion 42 protruding from the adapter 30 is fitted into the first positioning hole 43 to limit the movement of the adapter 30 in multiple different directions in a preset plane.

[0134] It can be seen that in the above Embodiment 1 to Embodiment 3, the adapter 30 can be respectively positioned and fitted with the two conductive sheets 24 electrically connected thereto through the positioning structure 40. Without the need for additional positioning elements, the electrical connection of multiple integrated busbars 20 can be achieved, which is convenient for reducing the assembly process of the electrical connection between the adapter 30 and the conductive sheet 24, saving the assembly time for the electrical connection of multiple integrated busbars 20, improving the assembly efficiency, and the movement and rotation of the adapter 30 in a preset plane can be restricted through multiple positioning structures 40, making the electrical connection between the adapter 30 and the conductive sheet 24 more convenient and facilitating the improvement of the reliability of the battery device 1.

[0135] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, if there is no special description, all the implementation manners and optional implementation manners of the present application can be combined with each other to form a new technical solution. If there is no special description, all the technical features and optional technical features of the present application can be combined with each other to form a new technical solution. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A battery device, characterized in that, include: A plurality of battery groups, wherein the plurality of battery groups are arranged in sequence, each of the battery groups comprises a plurality of battery cells, each of the battery cells has a pole, and the corresponding pole forms an output end of the battery group; A plurality of integrated busbars, each of the integrated busbars corresponding to the plurality of battery packs, each of the integrated busbars comprising an insulating member and a plurality of conductive sheets, the insulating member being disposed at one end of the battery pack where the output terminal is located, and the conductive sheet being fixedly disposed on the insulating member and electrically connected to the corresponding output terminal; An adapter, wherein the adapter is disposed on a side of the integrated busbar away from the battery pack and is electrically connected to a plurality of the conductive sheets belonging to different integrated busbars, respectively, so as to electrically connect the corresponding plurality of battery packs, and at least one of the plurality of conductive sheets electrically connected to the adapter is positioned and cooperated with the adapter through at least one positioning structure to limit the movement of the adapter within a preset plane, and the preset plane is parallel to the plane where the conductive sheets are located, and the positioning structure includes a first positioning portion and a second positioning portion, the first positioning portion is disposed on the adapter, and the second positioning portion is disposed on the conductive sheet.

2. The battery device according to claim 1, characterized in that, The first positioning portion and the second positioning portion are respectively a positioning protrusion and a first positioning hole, at least a portion of the positioning protrusion protrudes from the conductive sheet or the adapter in a direction perpendicular to the plane where the conductive sheet is located, and cooperates with the first positioning hole to at least limit the movement of the adapter in multiple different directions.

3. The battery device according to claim 2, characterized in that, The first positioning hole is located at a corner of the conductive sheet or the adapter and passes through two adjacent edges thereof.

4. The battery device according to claim 3, wherein, The hole wall of the first positioning hole includes a first wall and a second wall which are sequentially arranged along the circumferential direction and connected by bending, and the first wall and the second wall extend along straight lines respectively.

5. The battery device according to claim 2, characterized in that, The first positioning hole is located on the conductive sheet or the adapter and is spaced apart from an edge thereof.

6. The battery device according to claim 2, characterized in that: The positioning protrusion is integrally formed on one of the conductive sheet and the adapter; or, The positioning protrusion is assembled and connected to one of the conductive sheet and the adapter.

7. The battery device according to claim 6, characterized in that: The positioning protrusion is formed by stamping one of the conductive sheet and the adapter; or, The one of the conductive sheet and the adapter is detachably connected to the positioning protrusion.

8. The battery device according to claim 7, characterized in that, A threaded hole is formed on one of the conductive sheet and the adapter, a portion of the positioning protrusion is threadedly connected to the threaded hole, and another portion is protrudingly arranged.

9. The battery device according to claim 1, characterized in that, The adapter comprises a transition portion and two electrical connection portions, two ends of the transition portion are respectively connected to the two electrical connection portions, and the two electrical connection portions are respectively electrically connected to the two conductive sheets. The transition portion is provided with a buffer portion that can be stretched and deformed; and / or, A stretchable and deformable buffer portion is connected between each of the electrical connecting portions and the transition portion.

10. The battery device according to claim 1, characterized in that, The edge of the conductive sheet spaced apart from and adjacent to the adapter has a protrusion, and the edge of the adapter has an avoidance notch opposite to the protrusion, and the width of the avoidance notch is greater than the width of the protrusion.

11. The battery device according to claim 1, characterized in that, A plurality of second positioning holes are formed in the adapter, third positioning holes are formed in the conductive sheet, and a positioning portion is provided on the pole column of the battery cell, and the second positioning holes corresponding to the third positioning holes are both opposite to the positioning portion.

12. The battery device according to any one of claims 1-11, characterized in that, Two conductive sheets electrically connected to the adapter are arranged at intervals in a first direction and are respectively in positioning cooperation with the adapter through the positioning structure. The adapter has a first center line extending in the first direction and a second center line extending in a second direction. The corresponding positioning structures of the two conductive sheets electrically connected to the adapter are respectively located on both sides of the first center line and on both sides of the second center line. The second direction is perpendicular to the first direction, and both are parallel to the plane where the conductive sheet is located.

13. An electrical device, characterized in that, Comprising the battery device according to any one of claims 1-12.

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