Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, the battery device comprises a battery monomer group, an acquisition board and a protective cover, the acquisition board is arranged in the battery monomer group and is configured to acquire working parameters of the battery monomer group, and the protective cover is connected with the acquisition board and is configured to cover the acquisition board. According to the scheme provided by the invention, the protective cover is arranged on the acquisition plate, so that the acquisition plate can be prevented from being collided, and the product yield of the acquisition plate is improved.

Description

Technical Field

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

[0002] The battery system needs to monitor the state of the battery cells to ensure the stable operation of the battery system. Currently, the cell signals are mainly collected by a signal acquisition module and transmitted to the battery management system through a signal wire harness to monitor the state of the cells.

[0003] In the related art, the acquisition module is easily damaged during use. Summary of the Utility Model

[0004] In view of the above problems, this application provides a battery device and an electrical device, which can solve the problem that the acquisition module is easily damaged during use.

[0005] To solve the above technical problems, in a first aspect, this application proposes a battery device, including:

[0006] A battery cell group;

[0007] An acquisition board, which is arranged on the battery cell group and is configured to collect the operating parameters of the battery cell group;

[0008] A protective cover, the protective cover includes a top plate and side plates, the side plates are arranged around the periphery of the top plate, the side plates and the top plate enclose a concave structure, the acquisition board is located in the concave structure, and there is a notch between the top plate and the side plates, and the position of the notch corresponds to the position of the corner of the acquisition board.

[0009] In the technical solution of the embodiment of this application, by arranging a protective cover on the acquisition board, the acquisition board can be prevented from being collided, thereby improving the product yield of the acquisition board.

[0010] In some embodiments, reinforcing ribs are provided on the side of the protective cover facing away from the acquisition board. In this way, the overall strength of the protective cover can be improved, and the acquisition board can be prevented from being damaged by the deformed protective cover.

[0011] In some embodiments, the protective cover is detachably connected to the acquisition board. In this way, it is convenient to disassemble and assemble the protective cover onto the acquisition board.

[0012] In some embodiments, the battery device further includes a connecting member, and the protective cover is connected to the acquisition board through the connecting member. In this way, it is convenient to connect the protective cover and the acquisition board together.

[0013] In some embodiments, the protective cover further includes a connecting piece disposed inside the side plate, and the connecting member passes through the collecting plate and is connected to the connecting piece.

[0014] In some embodiments, one connecting piece is disposed inside each side plate, and the connecting piece is located in the middle of the side plate. In this way, when the connecting member passes through the collecting plate and is connected to the connecting piece, each connecting member is uniformly stressed, thereby improving the reliability and safety of the connection.

[0015] In some embodiments, the size of the concave structure is larger than the size of at least one of the collecting plates. In this way, one protective cover can protect one or more collecting plates.

[0016] In some embodiments, the battery device further includes a bus bar connected to the battery cell group, and the collecting plate is detachably connected to the bus bar.

[0017] In some embodiments, the collecting plate is a wireless collecting plate. In this way, the collected working parameters can be conveniently transmitted through wireless transmission.

[0018] In a second aspect, the present application provides an electrical device including the battery device according to any one of the embodiments of the present application.

[0019] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description of the embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 is a schematic structural diagram of an electrical device provided by some embodiments of the present application;

[0022] Figure 2 is a schematic structural diagram of a battery provided by some embodiments of the present application;

[0023] Figure 3 is a schematic structural diagram of a battery cell provided by some embodiments of the present application;

[0024] Figure 4 is a schematic structural diagram of a battery device provided by some embodiments of the present application;

[0025] Figure 5 exploded view of Figure 4 ;

[0026] Figure 6 Schematic diagram of the protective cover provided by some embodiments of the present application;

[0027] Figure 7 Another schematic diagram of the battery device provided by some embodiments of the present application;

[0028] Figure 8 Another schematic diagram of the battery device provided by some embodiments of the present application.

[0029] The reference numerals in the specific embodiments are as follows:

[0030] 1000, vehicle;

[0031] 100, battery; 200, controller; 300, motor;

[0032] 110, box body; 111, first part; 112, second part; 120, battery cell; 121, housing; 122, end cover; 123, electrode assembly;

[0033] 10, battery cell group; 11, bar piece; 12, acquisition board; 124, screw hole; 13, protective cover; 131, reinforcing rib; 132, top plate; 133, side plate; 134, connecting piece; 135, notch; 14, connecting member. Specific embodiments

[0034] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and thus are only examples and should not be used to limit the protection scope of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0037] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments 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. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0039] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0040] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of this application.

[0041] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0042] The battery system needs to monitor the state of the battery cells to ensure that the battery system operates in a stable state. Currently, the cell signals are mainly collected by a signal acquisition module and transmitted to the battery management system through a signal harness to monitor the cell state.

[0043] In the process of using the acquisition module in the related art, there is no protection and it is easily damaged by collision.

[0044] Based on the above considerations, in order to solve the problem that the acquisition module is easily damaged during use, a battery device is designed. The battery device includes a battery cell group, an acquisition board, and a protective cover. Among them, the acquisition board is arranged on the battery cell group and is configured to acquire the operating parameters of the battery cell group. The protective cover includes a top plate and side plates. Side plates are arranged around the periphery of the top plate, and the side plates and the top plate enclose a concave structure. The acquisition board is located within the concave structure. There is a notch between the top plate and the side plates, and the position of the notch corresponds to the position of the corner of the acquisition board.

[0045] In the technical solution of the embodiment of the present application, by providing a protective cover on the acquisition board, the acquisition board can be prevented from being collided, thereby improving the product yield of the acquisition board.

[0046] The battery in the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery pack, etc. The battery can be used as the power source or power system of the electrical device. In this way, it is beneficial to improve the overall performance of the battery and facilitate the popularization of the battery.

[0047] The above-mentioned electrical device can be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric vehicles, ships, spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys. For example, game consoles, electric vehicle toys, electric ship toys, electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, spaceships, etc.

[0048] For the convenience of description in the following embodiments, a vehicle 1000, which is an electrical device in an embodiment of the present application, is taken as an example for description.

[0049] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 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 100 is arranged inside the vehicle 1000, and the battery 100 can be arranged at the bottom, head, or tail of the vehicle 1000. The battery 100 can be used for the power supply of the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0050] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0051] Please refer to Figure 2 , Figure 2 which is an exploded view of the battery 100 provided in some embodiments of the present application. The battery 100 includes a box body 110 and battery cells 120, and the battery cells 120 are accommodated in the box body 110. Among them, the box body 110 is used to provide an accommodation space for the battery cells 120, and the box body 110 can adopt various structures. In some embodiments, the box body 110 can include a first part 111 and a second part 112, the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define an accommodation space for accommodating the battery cells 120. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-like structure. The first part 111 covers the open side of the second part 112 so that the first part 111 and the second part 112 jointly define an accommodation space; the first part 111 and the second part 112 can also both be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be of various shapes, such as a cylinder, a cuboid, etc.

[0052] In the battery 100, there can be multiple battery cells 120, and the multiple battery cells 120 can be connected in series, parallel or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 120. The multiple battery cells 120 can be directly connected in series, parallel or in a mixed connection together, and then the whole formed by the multiple battery cells 120 is accommodated in the box body 110; of course, the battery 100 can also be that multiple battery cells 120 are first connected in series, parallel or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, parallel or in a mixed connection to form a whole and are accommodated in the box body 110. The battery 100 can also include other structures. For example, the battery 100 can also include a busbar component for realizing the electrical connection among the multiple battery cells 120.

[0053] Among them, each battery cell 120 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto. The battery cell 120 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc.

[0054] As Figure 3As shown, the battery cell 120 may include a housing, an electrode assembly 123, and electrode terminals. The housing includes a casing 121 and an end cap 122. The casing 121 has an opening, and the end cap 122 closes the opening to isolate the internal environment of the battery cell 120 from the external environment.

[0055] The casing 121 is a component for cooperating with the end cap 122 to form the internal environment of the battery cell 120. Among them, the formed internal environment can be used to accommodate the electrode assembly 123, the electrolyte, and other components. The casing 121 and the end cap 122 can be independent components. The casing 121 can be in various shapes and sizes. Specifically, the shape of the casing 121 can be determined according to the specific shape and size of the electrode assembly 123. The material of the casing 121 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0056] The end cap 122 refers to a component that covers the opening of the casing 121 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the casing 121 to cooperate with the casing 121. Optionally, the end cap 122 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 122 is not easily deformed when subjected to extrusion and collision, so that the battery cell 120 can have higher structural strength and the reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap 122. The electrode terminals can be used to electrically connect to the electrode assembly 123 for outputting or inputting the electrical energy of the battery cell 120. The material of the end cap 122 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this. In some embodiments, an insulating structure can be further provided on the inner side of the end cap 122. The insulating structure can be used to isolate the electrical connection components in the casing 121 from the end cap 122 to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0057] The electrode assembly 123 is a component in the battery cell 120 where electrochemical reactions occur. One or more electrode assemblies 123 may be contained within the housing 121. The electrode assembly 123 is mainly formed by winding or laminating a positive electrode plate and a negative electrode plate, and generally, a separator is provided between the positive electrode plate and the negative electrode plate to separate the positive electrode plate and the negative electrode plate and prevent internal short circuit between them. The portions of the positive electrode plate and the negative electrode plate with active materials constitute the main body of the electrode assembly 123, and the portions of the positive electrode plate and the negative electrode plate without active materials respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab may be located at one end of the main body together or at both ends of the main body respectively. During the charging and discharging process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the electrode tabs are connected to the electrode terminals to form a current loop. In addition, the electrode assembly 123 may be a wound structure or a stacked structure.

[0058] In some embodiments, the battery cell 120 may further be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold value.

[0059] According to some embodiments of the present application, Figure 4 is a schematic structural diagram of the battery device in the present application, Figure 5 is Figure 4 an explosion diagram of. As Figure 4 and Figure 5 shown, the present application provides a battery device, which includes a battery cell group 10, a collecting board 12, and a protective cover 13. Among them, the collecting board 12 is disposed on the battery cell group 10 and is configured to collect the operating parameters of the battery cell group 10, such as Figure 6 and in combination with Figure 5 shown, the protective cover 13 includes a top plate 132 and side plates 133. Among them, side plates 133 are disposed around the periphery of the top plate 132, and the side plates 133 and the top plate 132 enclose a concave structure, and the collecting board 12 is located within the concave structure. At the same time, a notch 135 is provided between the top plate 132 and the side plates 133, and the position of the notch 135 corresponds to the position of the corner of the collecting board 12.

[0060] The collecting board 12 in this embodiment may be a voltage collector, a temperature collector, a current collector, etc., and specifically may be determined according to actual situations, and the embodiments of this specification do not limit this.

[0061] The acquisition board 12 is electrically connected to the battery cell group 10. When the battery cell group 10 is working, the acquisition board 12 transmits the acquired working parameters to the Battery Management System (BMS). Among them, BMS is a device used to monitor, protect, and manage the state of the battery system, aiming to extend the battery life, ensure the safe operation of the battery, and improve the performance and reliability of the battery. BMS is usually composed of software programs and hardware, and can real-time monitor battery status, temperature, voltage, current and other data, and control charging and discharging and protect the battery according to preset conditions when necessary.

[0062] In this embodiment, the protective cover 13 can be connected to the acquisition board 12 by bolts, or the protective cover 13 is snap-fitted on the acquisition board 12, and specifically can be determined according to the actual situation, and this embodiment of the specification does not limit this.

[0063] Reference Figure 6 As shown, the top plate 132 in this embodiment is a square structure, and side plates 133 are provided on all four sides of the top plate 132. The side plates 133 and the top plate 132 enclose a concave structure. At the same time, a connecting piece 134 is welded to the inner side of each side plate 133. Of course, it can be understood that the top plate 132 can also be other structures, such as polygons, irregular figures, etc., and this is not limited here.

[0064] In this embodiment, screw holes 124 are provided on the acquisition board 12, and screw holes are also provided on the connecting piece 134. After the connecting piece 14 passes through the screw holes 124 and the screw holes on the connecting piece 134 in sequence, the acquisition board 12 can be fixed to the protective cover 13. At this time, the acquisition board 12 is located in the corresponding concave structure, and under the protection of the concave structure, the acquisition board 12 can be prevented from being damaged.

[0065] In this embodiment, since the position of the notch 135 corresponds to the position of the corner of the acquisition board 12, in this way, it is convenient for the acquisition board 12 to dissipate heat.

[0066] In the technical solution of the embodiment of the present application, by providing the protective cover 13 on the acquisition board 12, at this time, the protective cover 13 covers the acquisition board 12, thereby avoiding the acquisition board 12 from being collided and improving the product yield of the acquisition board 12.

[0067] According to some embodiments of the present application, as Figure 5 shown, a reinforcing rib 131 is provided on the side of the protective cover 13 facing away from the acquisition board 12. In this way, the overall strength of the protective cover 13 can be improved, and the acquisition board 12 can be prevented from being damaged by being pressed after the protective cover 13 is deformed.

[0068] According to some embodiments of the present application, the protective cover 13 is detachably connected to the acquisition board 12.

[0069] In this embodiment, the protective cover 13 can be connected to the acquisition board 12 by means of bolts, snap connections, etc., so that it is convenient to disassemble and assemble the protective cover 13 on the acquisition board 12.

[0070] According to some embodiments of the present application, as Figure 5 shown, the battery device further includes a connecting member 14, wherein the protective cover 13 is connected to the acquisition board 12 through the connecting member 14.

[0071] The connecting member 14 in this embodiment can be a bolt, a buckle, etc. For the convenience of description below, the connecting member 14 is taken as an example of a bolt for illustration.

[0072] During installation, the protective cover 13 can be conveniently connected to the acquisition board 12 by bolts.

[0073] According to some embodiments of the present application, as Figure 6 and combined with Figure 5 shown, the protective cover 13 further includes a connecting piece 134, which is arranged inside the side plate 133, and the connecting member 14 passes through the acquisition board 12 and is connected to the connecting piece 134.

[0074] Referring to Figure 6 shown, the top plate 132 in this embodiment is a square structure, and side plates 133 are arranged around the top plate 132. The side plates 133 and the top plate 132 enclose a concave structure. At the same time, a connecting piece 134 is welded to the inside of each side plate 133. Of course, it can be understood that the top plate 132 can also be other structures, such as polygons, irregular figures, etc., which are not limited here.

[0075] In this embodiment, screw holes 124 are provided on the acquisition board 12, and screw holes are also provided on the connecting piece 134. After the connecting member 14 passes through the screw holes 124 and the screw holes on the connecting piece 134 in sequence, the acquisition board 12 can be fixed to the protective cover 13. At this time, the acquisition board 12 is located inside the corresponding concave structure, and under the protection of the concave structure, the acquisition board 12 can be prevented from being damaged.

[0076] According to some embodiments of the present application, as Figure 6 shown, a connecting piece 134 is arranged inside each side plate 133, and the connecting piece 134 is located in the middle of the side plate 133. In this way, when the connecting member 14 passes through the acquisition board 12 and is connected to the connecting piece 134, each connecting member 14 is evenly stressed, thereby improving the reliability and safety of the connection.

[0077] According to some embodiments of the present application, the size of the concave structure is larger than the size of at least one acquisition board 12.

[0078] Referring to Figure 6 and combined with Figure 7 andFigure 8 As shown, in this embodiment, the size of the concave structure formed on the protective cover 13 is larger than the size of at least one acquisition board 12. At this time, one protective cover 13 can protect one or more acquisition boards 12.

[0079] According to some embodiments of the present application, as Figure 5 shown, the battery device further includes a bus bar 11, which is connected to the battery cell group 10, and the acquisition board 12 is detachably connected to the bus bar 11.

[0080] In this embodiment, the bus bar 11 can be connected to the battery cell group 10 by laser welding. At this time, the bus bar 11 is electrically connected to the battery cell group 10. At the same time, a card slot is provided on the bus bar 11, and a card block is provided on the acquisition board 12. The card block cooperates with the card slot, so as to realize the electrical connection between the acquisition board 12 and the bus bar 11. At this time, the working parameters of the battery cell group 10 can be collected through the acquisition board 12.

[0081] According to some embodiments of the present application, the acquisition board 12 is a wireless acquisition board.

[0082] The wireless acquisition board in this embodiment is a wireless acquisition device. The working parameters of the battery cell group 10 are collected through the wireless acquisition device, and then the collected working parameters can be conveniently transmitted by using wireless technology.

[0083] The present application also provides an electrical device, including the battery device according to any one of the embodiments of the present application.

[0084] For the specific structure of the battery device in this embodiment, refer to the above embodiments. Since all the technical solutions of the above embodiments are adopted in this electrical device, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0085] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; 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 on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Battery cell group; A collection board, which is disposed on the battery cell group and is configured to collect working parameters of the battery cell group; The protective cover comprises a top plate and side plates, the side plates are arranged around the periphery of the top plate, the side plates and the top plate are arranged in a concave structure, the collecting plate is located in the concave structure, a notch is arranged between the top plate and the side plates, and the position of the notch corresponds to the position of the corner of the collecting plate.

2. The battery device according to claim 1, characterized in that: A reinforcing rib is arranged on a side of the protective cover away from the collecting plate.

3. The battery device according to claim 1 or 2, characterized in that: The protective cover is detachably connected to the collecting plate.

4. The battery device according to claim 3, characterized in that: The battery device further comprises a connecting piece, and the protective cover is connected to the collection board via the connecting piece.

5. The battery device according to claim 4, characterized in that: The protective cover also includes a connecting piece, which is arranged on the inner side of the side plate, and the connecting member passes through the collecting plate and is connected to the connecting piece.

6. The battery device according to claim 5, characterized in that: A connecting piece is arranged on the inner side of each side plate, and the connecting piece is located in the middle of the side plate.

7. The battery device according to claim 1, characterized in that: The size of the concave structure is larger than the size of at least one of the collecting plates.

8. The battery device according to claim 1, characterized in that: The battery device further comprises a tab, wherein the tab is connected to the battery cell group, and the collection board is detachably connected to the tab.

9. The battery device according to claim 1 or 2, characterized in that: The acquisition board is a wireless acquisition board.

10. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 9.

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