Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device. The battery device comprises a plurality of single batteries; a plurality of electric connectors, all the electric connectors comprise two first electric connectors, each first electric connector is connected between two adjacent battery monomers along the first direction, and the two first electric connectors are adjacently arranged along the second direction; all the electric connecting pieces further comprise a total positive output electric connecting piece and a total negative output electric connecting piece, all the battery monomers comprise a first column of battery monomers which are not located on the outermost edge in the first direction, and the total positive output electric connecting piece or the total negative output electric connecting piece is connected to the battery monomer at the tail end of the first column of battery monomers; the insulation isolation structure is arranged between the two first electric connecting pieces; and / or the insulation isolation structure is arranged between the battery monomers corresponding to the two first electric connecting pieces. Therefore, the risk of high-voltage arcing fire caused by insulation failure is reduced, and the reliability of the battery device is improved.

Description

Technical Field

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

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] A CTP (Cellular Toy Box) battery device typically consists of multiple longitudinal columns of battery cells. In related technologies, to reduce the length of the copper bar from the battery device's total output stage to the high-voltage box (SBOX) equipment, the total positive output stage or the total negative output stage is placed at the front end of the SBOX. To achieve this arrangement, two adjacent crossbars appear in the battery device, which reduces the reliability of the battery device. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can alleviate the problem of reduced reliability of the battery device caused by the presence of two adjacent cross-bars in the battery device.

[0005] In a first aspect, the present application provides a battery device, comprising:

[0006] A plurality of battery cells are arranged in rows along a first direction and in columns along a second direction; wherein the first direction is perpendicular to the second direction;

[0007] a plurality of electrical connectors, each of which is electrically connected between two adjacent battery cells; the entire electrical connectors include two first electrical connectors, each of which is connected between two adjacent battery cells along a first direction, and the two first electrical connectors are adjacently arranged along a second direction; the entire electrical connectors also include a total positive output electrical connector and a total negative output electrical connector, the entire battery cells include a first column of battery cells located at a non-edgemost position along the first direction, the total positive output electrical connector or the total negative output electrical connector being connected to the battery cell at the end of the first column of battery cells;

[0008] and an insulating isolation structure, the insulating isolation structure is arranged between the two first electrical connectors; and / or the insulating isolation structure is arranged between the battery cells corresponding to the two first electrical connectors.

[0009] In the battery device described above, based on the fact that all electrical connectors include two first electrical connectors, each first electrical connector is connected between two battery cells adjacent in the first direction, and the two first electrical connectors are arranged adjacent in the second direction, it is possible to connect the total positive output electrical connector or the total positive output electrical connector to the battery cell at the end of the first row of electrical connectors, which is not at the edge. This allows the total positive output electrical connector or the total positive output electrical connector to be arranged away from the edge and toward the middle of one side of the battery device, thereby reducing the length of the total positive output electrical connector and the total negative output electrical connector connected to the high-voltage box device. Furthermore, by providing an insulating isolation structure between two adjacent first electrical connectors and / or providing an insulating isolation structure between the battery cells corresponding to the two first electrical connectors, the two first electrical connectors can be insulated and isolated, or the battery cells corresponding to the two first electrical connectors can be insulated and isolated, thereby increasing the creepage distance between the two first electrical connectors or between the battery cells corresponding to the two first electrical connectors, and improving the insulation protection performance, thereby reducing the risk of high-voltage arcing fire caused by insulation failure, and thus improving the reliability of the battery device.

[0010] In some embodiments, the insulating isolation structure includes a beam structure; the beam structure is disposed between the battery cells corresponding to the two first electrical connectors;

[0011] Alternatively, the beam structure is disposed between the two first electrical connectors and between the battery cells corresponding to the two first electrical connectors.

[0012] The beam structure is usually large in size. When the beam structure is set between the battery cells corresponding to the two first electrical connectors, the beam structure can increase the distance between the battery cells corresponding to the two first electrical connectors, thereby increasing the creepage distance between the battery cells corresponding to the two first electrical connectors, improving the insulation protection performance, and thus reducing the risk of high-voltage arcing and fire caused by insulation failure, thereby improving the reliability of the battery device.

[0013] When the beam structure is arranged both between the battery cells corresponding to the two first electrical connectors and between the battery cells corresponding to the two first electrical connectors, it can not only increase the spacing between the battery cells corresponding to the two first electrical connectors, thereby increasing the creepage distance between the battery cells corresponding to the two first electrical connectors, but also increase the spacing between the two first electrical connectors, thereby increasing the creepage distance between the two first electrical connectors. Therefore, the risk of high-voltage arcing and fire caused by insulation failure is reduced as a whole, thereby improving the reliability of the battery device.

[0014] In some embodiments, the beam structure extends along a first direction from the battery cells in the first column to the battery cells in the last column.

[0015] When the beam structure extends along the first direction from the battery cells in the first row to the battery cells in the last row, it not only increases the overall structural strength of the battery device, but also improves the reliability of increasing the creepage distance between the battery cells corresponding to the two first electrical connectors and increasing the creepage distance between the two first electrical connectors.

[0016] In some embodiments, the beam structure is configured as one of a mounting beam or a cross beam.

[0017] In some embodiments, the insulating isolation structure further includes an insulating film, and the insulating film is disposed along the second direction between the battery cells corresponding to the two first electrical connectors and the beam structure.

[0018] By configuring the beam structure as either a mounting beam or a crossbeam, existing structures within the battery device are utilized, reducing the need for other structures, simplifying the internal structure of the battery device, and increasing internal space. Furthermore, the mounting beam or crossbeam offers high structural reliability, thereby enhancing the reliability of increasing the creepage distance between the battery cells corresponding to the two first electrical connectors and increasing the creepage distance between the two first electrical connectors.

[0019] In some embodiments, the insulating film is one of a PP insulating film, a PE insulating film, or a PET insulating film.

[0020] PP insulating film, PE insulating film or PET insulating film all have excellent insulation performance, but their high temperature resistance performance is not high. Therefore, setting them between the battery cell and the beam structure instead of between the first electrical connector and the beam structure can make the insulation protection performance more reliable.

[0021] In some embodiments, the insulating isolation structure includes an insulating heat-insulating layer and a first high-temperature resistant insulating member. The insulating heat-insulating layer is arranged between the battery cells corresponding to the two first electrical connectors; the first high-temperature resistant insulating member is arranged between the two first electrical connectors.

[0022] Unlike the solution of setting a beam structure between the battery cells corresponding to the two first electrical connectors, the insulating isolation structure in this embodiment does not have a beam structure to increase the distance between the battery cells corresponding to the two first electrical connectors. Therefore, the distance between the battery cells is very close. Therefore, by setting an insulating heat insulation layer between the battery cells corresponding to the two first electrical connectors, insulation protection can be provided between the battery cells, and the heat insulation setting can reduce the heat transfer between the battery cells, reduce the risk of thermal runaway, and thus reduce the risk of insulation failure. At the same time, a first high-temperature resistant insulating part is set between two first electrical connectors that are very close to each other, which can insulate and isolate the two first electrical connectors, increase the creepage distance, and improve the reliability of the insulation isolation due to the high-temperature resistant setting.

[0023] In some embodiments, the insulating thermal insulation layer is a PI layer or an aerogel thermal insulation layer.

[0024] The PI layer and the aerogel insulation layer both have excellent insulation and thermal insulation properties, which can improve the reliability of insulation protection between the battery cells corresponding to the two first electrical connectors and further reduce the risk of insulation failure.

[0025] In some embodiments, the first high temperature resistant insulating member is a PU layer or a silicone rubber layer.

[0026] The PU layer or the silicone rubber layer has good high temperature resistance and a certain elasticity. When arranged between the two first electrical connectors, it can reduce damage to the first electrical connectors.

[0027] In some embodiments, the battery device further includes a second high temperature resistant insulating member, which covers a side of the first electrical connector facing away from the battery cell along a third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0028] When the second high-temperature resistant insulating member covers the side of the first electrical connector facing away from the battery cell along the third direction, it can provide insulation protection for the side of the first electrical connector facing away from the battery cell, reducing the risk of high-voltage arcing and fire between the two first electrical connectors.

[0029] In some embodiments, the second high temperature resistant insulating member is one of TC composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet.

[0030] TC composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet are all high-temperature thermal insulation materials that can effectively reduce the risk of high-voltage arcing and fire between the two first electrical connectors.

[0031] In some embodiments, all the electrical connectors include two electrical connector groups, each electrical connector group includes two groups of first electrical connectors, and the two electrical connector groups are spaced apart from each other along the first direction;

[0032] There are two insulating isolation structures, and the two insulating isolation structures are arranged in a one-to-one correspondence with the two electrical connection groups.

[0033] By arranging two insulating isolation structures in one-to-one correspondence with two groups of electrical connection groups, an insulating isolation structure is provided between each group of electrical connection groups and / or an insulating isolation structure is provided between the battery cells corresponding to the two first electrical connectors of each group of electrical connectors. This enables insulation isolation between the two first electrical connectors of each group of electrical connectors, or insulation isolation between the battery cells corresponding to the two first electrical connectors of each group of electrical connectors, thereby increasing the creepage distance between the two first electrical connectors of each group of electrical connectors or the battery cells corresponding to the two first electrical connectors of each group of electrical connectors, improving the insulation protection performance, thereby reducing the risk of high-voltage arcing fire caused by insulation failure, and thereby improving the reliability of the battery device.

[0034] In some embodiments, all the battery cells also include a second column of battery cells located at a non-edgemost position along the first direction, the first column of battery cells are adjacent to the second column of battery cells, one of the total positive output electrical connector or the total negative output electrical connector is connected to the battery cell at the end of the first column of battery cells; the other of the total positive output electrical connector or the total negative output electrical connector is connected to the battery cell at the end of the second column of battery cells, and the total positive output electrical connector and the total negative output electrical connector are located on the same side.

[0035] In this way, it is possible to achieve that both the total positive output electrical connector and the total negative output electrical connector are moved closer to the middle of one side of the battery device.

[0036] In a second aspect, an electrical device is also provided, comprising the battery device in any of the above embodiments.

[0037] The above-mentioned electrical device, by providing an insulating isolation structure between two adjacent first electrical connectors and / or providing an insulating isolation structure between the battery cells corresponding to the two first electrical connectors, can insulate and isolate the two first electrical connectors, or insulate and isolate the battery cells corresponding to the two first electrical connectors, thereby increasing the creepage distance between the two first electrical connectors or between the battery cells corresponding to the two first electrical connectors, and improving the insulation protection performance, thereby reducing the risk of high-voltage arcing fire caused by insulation failure, and thereby improving the reliability of the battery device.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0040] Figure 1 Schematic diagram of the arrangement of battery cells in a battery device in the related art.

[0041] Figure 2 is a schematic structural diagram of a vehicle according to one or more embodiments.

[0042] Figure 3 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.

[0043] Figure 4 is a schematic diagram of the exploded structure of a battery cell according to one or more embodiments.

[0044] Figure 5 FIG. 4 is a schematic structural diagram of a battery device according to one or more embodiments.

[0045] Figure 6 is a schematic structural diagram of a battery device according to one or more other embodiments.

[0046] Figure 7 for Figure 6 A schematic three-dimensional structural diagram of part of the structure of the battery device shown.

[0047] The accompanying drawings in the specific implementation manner are as follows:

[0048] Vehicle 1000, battery device 100, box 10, first part 11, second part 12, battery cell 20, end cap 21, electrode terminal 211, electrode assembly 23, tab 231, first column of battery cells 24, second column of battery cells 25, electrical connector 30, first electrical connector 31, positive total output electrical connector 32, total negative output electrical connector 33, electrical connection group 34, insulating isolation structure 40, beam structure 41, insulating heat insulation layer 43, first high temperature resistant insulating part 44, second high temperature resistant insulating part 50, controller 200, motor 300. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution 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 solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0052] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. For example, 1 and / or 2 can represent: 1 exists alone, 1 and 2 exist simultaneously, and 2 exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the 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 on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0057] CTP technology (module-less technology), short for Cell To Pack, reduces or eliminates the three-stage pack structure of a battery assembly: cell-module-pack. CTP battery systems directly integrate battery cells into the battery assembly. By eliminating the battery module, the battery assembly is integrated into the vehicle floor as part of the overall vehicle structure. Compared to traditional battery systems, this can increase volume utilization by 15%-20%, reduce the number of parts by 40%, increase production efficiency by 50%, and reduce power battery manufacturing costs.

[0058] In the related art, the battery cells in the CTP battery device are arranged in 6 rows vertically, and the total positive output stage and the total negative output stage are arranged on the same side. In order to reduce the length of the copper bar connecting the total positive output stage and the total negative output stage to the high-voltage box (SBOX) equipment, the total positive output stage or the total negative output stage will be arranged close to the SBOX, that is, the front end of the SBOX.

[0059] In order to realize the above arrangement, the bars connected between two adjacent battery cells will be as follows: Figure 1 The arrangement shown in the figure makes the battery cells connected in series.

[0060] from Figure 1 It can be seen that there are multiple cross-bars 2 that cross the battery cells 1 (battery cells) in the battery device, and there are two cross-bars 2 adjacent to each other in the longitudinal direction. Since multiple battery cells 1 are connected in series between these two cross-bars 2, there is a large voltage difference between the two adjacent cross-bars 2. When the insulation of the battery cell 1 fails, for example, the battery cell 1 suffers thermal runaway and causes insulation failure, it will cause high-voltage arcing and fire problems, thereby reducing the reliability of the battery device.

[0061] In order to alleviate the problem of reduced reliability of the battery device due to the large pressure difference between two adjacent cross-bars, the present application designs a battery device, including a plurality of battery cells, a plurality of electrical connectors and an insulating isolation structure. The plurality of battery cells are arranged in rows along the first direction and in columns along the second direction; wherein the first direction is perpendicular to the second direction. Each electrical connector is electrically connected between two adjacent battery cells, and all electrical connectors include two first electrical connectors, each first electrical connector is connected between two adjacent battery cells along the first direction, and the two first electrical connectors are arranged adjacent to each other along the second direction. The insulating isolation structure is arranged between the two first electrical connectors; and / or the insulating isolation structure is arranged between the battery cells corresponding to the two first electrical connectors.

[0062] In this way, by providing an insulating isolation structure between two adjacent first electrical connectors, and / or providing an insulating isolation structure between the battery cells corresponding to the two first electrical connectors, the two first electrical connectors can be insulated and isolated, or the battery cells corresponding to the two first electrical connectors can be insulated and isolated, thereby increasing the creepage distance between the two first electrical connectors or the battery cells corresponding to the two first electrical connectors, and improving the insulation protection performance, thereby reducing the risk of high-voltage arcing and fire caused by insulation failure, and thereby improving the reliability of the battery device.

[0063] The battery cell of the present application is applied to a battery to alleviate the problem of reduced reliability of the battery device due to a large voltage difference between two adjacent cross-bars.

[0064] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, electrical devices such as vehicles, ships, or aircraft.

[0065] The present invention provides an electrical device that uses a battery device as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0066] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0067] Please refer to Figure 2 , Figure 2A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0068] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0069] Please refer to Figure 3 , Figure 3 This is an exploded view of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 is used to provide a storage space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cell 20. The second portion 12 can be a hollow structure with one end open. The first portion 11 can be a plate-like structure, with the first portion 11 overlapping the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. The first portion 11 and the second portion 12 can also be hollow structures with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0070] In the battery device 100, there may be multiple battery cells 20, which may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery unit 20 may be housed within the housing 10. Alternatively, the battery device 100 may comprise multiple battery cells 20 connected in series, in parallel, or in a hybrid connection to form a battery module, which is then further connected in series, in parallel, or in a hybrid connection to form a single unit and housed within the housing 10. The battery device 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0071] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0072] Please refer to Figure 4 , Figure 4 The following is a schematic diagram of the decomposition structure of a battery cell 20 provided in some embodiments of the present application. A battery cell 20 is the smallest unit that makes up a battery. Figure 3 The battery cell 20 includes an end cap 21, a shell 22, an electrode assembly 23 and other functional components.

[0073] The end cap 21 is a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cap 21 can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents the end cap 21 from deforming under compression or collision, thereby enhancing the structural strength and safety of the battery cell 20. The end cap 21 can be provided with functional components such as electrode terminals 211. The electrode terminals 211 can be used to electrically connect to the electrode assembly 23 to transmit or receive electrical energy from the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism 24 for relieving internal pressure in the battery cell 20 when the internal pressure or temperature reaches a threshold. The end cap 21 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic, and this is not particularly limited in the present embodiments. In some embodiments, an insulating member may be provided inside the end cap 21 to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0074] The housing 22 is a component that cooperates with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can be used to accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and end cap 21 can be separate components. An opening can be provided in the housing 22, and the end cap 21 is placed over the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and housing 22 can be integrated. Specifically, the end cap 21 and housing 22 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 22 needs to be enclosed, the end cap 21 is placed over the housing 22. The housing 22 can have a variety of shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, or a hexagonal prism. Specifically, the shape of the housing 22 can be determined based on the specific shape and size of the electrode assembly 23. The housing 22 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular limitations on this.

[0075] The electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. One or more electrode assemblies 23 may be contained within the housing 22. The electrode assembly 23 is primarily composed of positive and negative electrode materials, a separator, and a current collector. Specifically, the positive electrode material is coated on the battery output connector to form a positive electrode sheet, and the negative electrode material is coated on the battery output connector to form a negative electrode sheet. The positive and negative electrode sheets are wound or stacked, and the separator is disposed between the positive and negative electrode sheets to form the electrode assembly 23. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab 231. The positive and negative electrode tabs may be located together at one end of the main body or separately at both ends of the main body. During the battery's charge and discharge process, the positive and negative electrode active materials react with the electrolyte, and the tabs 231 connect to the electrode terminals 211 to form a current circuit.

[0076] See attached Figure 5The embodiment of the present application provides a battery device 100, comprising a plurality of battery cells 20, a plurality of electrical connectors 30, and an insulating isolation structure 40. The plurality of battery cells 20 are arranged in rows along a first direction and in columns along a second direction; wherein the first direction is perpendicular to the second direction; each electrical connector 30 is electrically connected between two adjacent battery cells 20, and all the electrical connectors 30 include two first electrical connectors 31, each first electrical connector 31 is connected between two adjacent battery cells 20 along the first direction, and the two first electrical connectors 31 are arranged adjacent to each other along the second direction. All the electrical connectors 30 also include a total positive output electrical connector 32 and a total negative output electrical connector 33, and all the battery cells 20 also include a first column of battery cells 24 located at the non-edgemost edge along the first direction, and the total positive output electrical connector 32 or the total negative output electrical connector 33 is connected to the battery cell 20 at the end of the first column of battery cells 24.

[0077] The insulating isolation structure 40 is disposed between the two first electrical connectors 31 ; and / or the insulating isolation structure 40 is disposed between the battery cells 20 corresponding to the two first electrical connectors 31 .

[0078] The arrangement of multiple battery cells 20 in rows along the first direction and in columns along the second direction means that the multiple battery cells 20 are arranged in a matrix-like manner, but the spacing between the battery cells 20 in each row can be equal or unequal, and the spacing between the battery cells 20 in each column can be equal or unequal. Specifically, in the embodiment of the present application, the first direction is as follows: Figure 5 The first direction is the X direction, and the second direction is the Y direction. The plurality of battery cells 20 may be arranged in 20 rows along the first direction, and the plurality of battery cells 20 may be arranged in 6 columns along the second direction, i.e., the aforementioned 6 rows arranged vertically. In other embodiments, the plurality of battery cells 20 may also be arranged in other numbers of rows and columns.

[0079] Each electrical connector 30 is connected between two adjacent battery cells 20 to connect the two adjacent battery cells 20 in series or in parallel. In the embodiment of the present application, the electrical connector 30 connects the two adjacent battery cells 20 in series.

[0080] Each first electrical connector 31 is connected between two adjacent battery cells 20 along the first direction. That is, the first electrical connector 31 spans two adjacent battery cells 20 in the same row of two columns of battery cells 20 to electrically connect the two battery cells 20 .

[0081] The two first electrical connectors 31 are arranged adjacent to each other along the second direction, which means that one first electrical connector 31 spans two adjacent battery cells 20 located in the same row in two columns of battery cells 20, and the other first electrical connector 31 spans two adjacent battery cells 20 located in another adjacent row in the same two columns of battery cells 20.

[0082] The insulating isolation structure 40 refers to a component that performs an insulating isolation function. The insulating isolation structure 40 can be a component formed by combining multiple parts, or can be an integrally formed part.

[0083] The insulating isolation structure 40 is disposed between the two first electrical connectors 31, meaning that the insulating isolation structure 40 is disposed within the space formed between the two first electrical connectors 31 along the second direction. The insulating isolation structure 40 is disposed between the battery cells 20 corresponding to the two first electrical connectors 31, meaning that one first electrical connector 31 has two battery cells 20 connected thereto, designated as the two first battery cells, and the other first electrical connector 31 has two battery cells 20 connected thereto, designated as the two second battery cells, and the insulating isolation structure 40 is disposed within the space formed between the two first battery cells and the two second battery cells along the second direction.

[0084] In this way, based on the fact that all the electrical connectors 30 of the present application include two first electrical connectors 31, each first electrical connector 31 is connected between two battery cells 20 adjacent to each other along the first direction, and the two first electrical connectors 31 are arranged adjacent to each other along the second direction, the total positive output electrical connector 32 or the total negative output electrical connector 33 can be connected to the battery cell 20 at the end of the first column of battery cells 24 not at the edge, thereby achieving the total positive output electrical connector 32 or the total negative output electrical connector 33 being away from the edge and arranged toward the middle of one side of the battery device 100, thereby reducing the length of the total positive output electrical connector 32 and the total negative output electrical connector 33 connected to the high-voltage box (SBOX) equipment. Furthermore, by providing an insulating isolation structure 40 between two adjacent first electrical connectors 31, and / or providing an insulating isolation structure 40 between the battery cells 20 corresponding to the two first electrical connectors 31, the two first electrical connectors 31 can be insulated and isolated, or the battery cells 20 corresponding to the two first electrical connectors 31 can be insulated and isolated, thereby increasing the creepage distance between the two first electrical connectors 31 or the battery cells 20 corresponding to the two first electrical connectors 31, and improving the insulation protection performance, thereby reducing the risk of high-voltage arcing fire caused by insulation failure, and thereby improving the reliability of the battery device 100.

[0085] Specifically in some embodiments of the present application, the insulating isolation structure 40 includes a beam structure 41, and the beam structure 41 is arranged between the battery cells 20 corresponding to the two first electrical connectors 31; or the beam structure 41 is arranged between the two first electrical connectors 31 and between the battery cells 20 corresponding to the two first electrical connectors 31.

[0086] The beam structure 41 is a structure used to support, fix and protect the core components inside the battery device 100. In the embodiment of the present application, the beam structure 41 is provided between the battery cells 20 corresponding to the two first electrical connectors 31, so the beam structure 41 is used to fill and support between the battery cells 20.

[0087] The beam structure 41 is usually large in size. When the beam structure 41 is set between the battery cells 20 corresponding to the two first electrical connectors 31, the beam structure 41 can increase the distance between the battery cells 20 corresponding to the two first electrical connectors 31, thereby increasing the creepage distance between the battery cells 20 corresponding to the two first electrical connectors 31, improving the insulation protection performance, further reducing the risk of high-voltage arcing and fire caused by insulation failure, and improving the reliability of the battery device 100.

[0088] When the beam structure 41 is arranged both between the battery cells 20 corresponding to the two first electrical connectors 31 and between the battery cells 20 corresponding to the two first electrical connectors 31, it can not only increase the distance between the battery cells 20 corresponding to the two first electrical connectors 31, thereby increasing the creepage distance between the battery cells 20 corresponding to the two first electrical connectors 31, but also increase the distance between the two first electrical connectors 31, thereby increasing the creepage distance between the two first electrical connectors 31. Therefore, the risk of high-voltage arcing fire caused by insulation failure is reduced as a whole, thereby improving the reliability of the battery device 100.

[0089] According to some embodiments of the present application, the beam structure 41 extends along a first direction from the battery cells 20 in the first column to the battery cells 20 in the last column.

[0090] The beam structure 41 is a filling and supporting component inside the battery device 100 and needs to be connected to the box body 10 of the battery device 100. Therefore, the beam structure 41 needs to be connected to two opposite side walls of the box body 10 along its longitudinal direction, that is, the two ends in the first direction.

[0091] When the beam structure 41 extends along the first direction from the first row of battery cells 20 to the last row of battery cells 20, it not only increases the overall structural strength of the battery device 100, but also improves the reliability of increasing the creepage distance between the battery cells 20 corresponding to the two first electrical connectors 31 and increasing the creepage distance between the two first electrical connectors 31.

[0092] According to some embodiments of the present application, the beam structure 41 is configured as one of a mounting beam or a cross beam.

[0093] The mounting beam is the beam structure that connects the battery assembly 100 to external components, and it is responsible for transmitting mechanical loads and providing structural protection. The crossbeam is a load-bearing member installed within the battery assembly 100, supporting the battery cells 20, distributing mechanical loads, and enhancing overall structural strength. Typically, the crossbeam and longitudinal beams form a grid within the battery assembly 100 to secure the battery modules, distribute external impact forces, and minimize module displacement.

[0094] By configuring the beam structure 41 as either a mounting beam or a crossbeam, existing structures within the battery device 100 are utilized, reducing the need for other structures, simplifying the internal structure of the battery device 100, and increasing the internal space. Furthermore, the mounting beam or crossbeam provides high structural reliability, thereby improving the reliability of increasing the creepage distance between the battery cells 20 corresponding to the two first electrical connectors 31 and increasing the creepage distance between the two first electrical connectors 31.

[0095] Furthermore, the insulating isolation structure 40 further includes an insulating film, which is disposed along the second direction between the battery cells 20 corresponding to the two first electrical connectors 31 and the beam structure 41 .

[0096] An insulating film is a thin film with insulating properties, which means it can block the conduction of electric current.

[0097] When the insulating film is arranged between the battery cells 20 and the beam structure 41 corresponding to the two first electrical connectors 31, it can block the conduction of current between the battery cells 20 and the beam structure 41, further improving the insulation protection performance between the battery cells 20 and the beam structure 41. In addition, the thickness of the insulating film is small, which reduces the space occupied inside the battery device 100.

[0098] Specifically, the insulating film may be attached to the surface of the battery cell 20 or the surface of the beam structure 41 .

[0099] Specifically, the insulating film is one of a PP (polypropylene) insulating film, a PE (polyethylene) insulating film, or a PET (polyethylene terephthalate) insulating film.

[0100] PP insulating film, PE insulating film or PET insulating film all have excellent insulation performance, but their high temperature resistance performance is not high. Therefore, they are arranged between the battery cell 20 and the beam structure 41 rather than between the first electrical connector 31 and the beam structure 41 to make the insulation protection performance more reliable.

[0101] In other embodiments, the insulating film may also be a laminated structure of at least two of PP insulating film, PE insulating film, or PET insulating film.

[0102] See Figure 6 and Figure 7 According to other embodiments of the present application, the insulating isolation structure 40 includes an insulating heat-insulating layer 43 and a first high-temperature resistant insulating member 44. The insulating heat-insulating layer 43 is arranged between the battery cells 20 corresponding to the two first electrical connectors 31, and the first high-temperature resistant insulating member 44 is arranged between the two first electrical connectors 31.

[0103] The insulating layer 43 is a layer structure that possesses both insulating and thermal insulation properties. Thermal insulation performance refers to the ability of a material or structure to block heat transfer. The first high-temperature-resistant insulating member 44 is a component that possesses both insulating and high-temperature resistance. High-temperature resistance refers to the ability of a material to maintain physical stability and functional integrity in high-temperature environments.

[0104] Unlike the solution of setting a beam structure 41 between the battery cells 20 corresponding to the two first electrical connectors 31, the insulating isolation structure 40 in this embodiment does not have a beam structure 41 to increase the distance between the battery cells 20 corresponding to the two first electrical connectors 31. Therefore, the distance between the battery cells 20 is very close. Therefore, by setting an insulating heat insulation layer 43 between the battery cells 20 corresponding to the two first electrical connectors 31, insulation protection can be provided between the battery cells 20, and the heat insulation setting can reduce the heat transfer between the battery cells 20, reduce the risk of thermal runaway, and thus reduce the risk of insulation failure. At the same time, a first high-temperature resistant insulating part 44 is set between the two first electrical connectors 31 that are very close to each other, which can insulate and isolate the two first electrical connectors 31, increase the creepage distance, and improve the reliability of the insulation isolation due to the high-temperature resistant setting.

[0105] According to some other embodiments of the present application, the insulating heat-insulating layer 43 is a PI (polyimide) layer or an aerogel heat-insulating layer.

[0106] The PI layer and the aerogel insulation layer both have excellent insulation and thermal insulation properties, which can improve the reliability of insulation protection between the battery cells 20 corresponding to the two first electrical connectors 31 and further reduce the risk of insulation failure.

[0107] In other embodiments, the insulating thermal insulation layer 43 is a laminated structure of a PI layer and an aerogel thermal insulation layer.

[0108] In some embodiments, the two side surfaces of the battery cell 20 along the second direction are the surfaces with the largest area on the battery cell 20 , and the insulating layer 43 can be arranged between the surfaces of the battery cell 20 along the second direction corresponding to the two first electrical connectors 31 .

[0109] In some embodiments, the insulating layer 43 may be bonded to the battery cell 20 .

[0110] According to other embodiments of the present application, the first high-temperature resistant insulating member 44 is a PU (polyurethane) layer or a silicone rubber layer.

[0111] The PU (polyurethane) layer or the silicone rubber layer has good high temperature resistance and a certain elasticity. When disposed between the two first electrical connectors 30 , the damage to the first electrical connectors 30 can be reduced.

[0112] In other embodiments, the first high temperature resistant insulating member 44 is a laminated structure of a PU layer and a silicone rubber layer.

[0113] Specifically, the first high-temperature-resistant insulating member 44 can be bonded to the battery cell 20 so as to be positioned between the two first electrical connectors 31. Alternatively, the first high-temperature-resistant insulating member 44 can be bonded to a surface of the battery cell 20 along the third direction that has the electrode terminals 211. This surface supports the first high-temperature-resistant insulating member 44, ensuring its secure position and improving insulation reliability.

[0114] According to some embodiments of the present application, the battery device 100 further includes a second high temperature resistant insulating member 50, which covers the side of the first electrical connector 31 facing away from the battery cell 20 along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0115] The third direction is as follows Figure 5 The direction shown is perpendicular to the paper.

[0116] When the second high-temperature resistant insulating component 50 covers the side of the first electrical connector 31 facing away from the battery cell 20 along the third direction, it can provide insulation protection for the side of the first electrical connector 31 facing away from the battery cell 20, thereby reducing the risk of high-voltage arcing and fire between the two first electrical connectors 31.

[0117] It should be pointed out here that, whether it is the above-mentioned beam structure 41 scheme or the above-mentioned combination of the insulating layer 43 and the first high-temperature resistant insulating part 44, a second high-temperature resistant insulating part 50 can be set to cover the side of the first electrical connector 31 facing away from the battery cell 20 along the third direction.

[0118] Specifically, the second high-temperature resistant insulating member 50 is one of TC (polytetrafluoroethylene composite material) composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet.

[0119] TC composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet are all high-temperature heat-insulating materials, which can effectively reduce the risk of high-voltage arcing and fire between the two first electrical connectors 31.

[0120] In other embodiments, the second high-temperature resistant insulating member 50 is a laminated structure of at least two of TC composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet.

[0121] Specifically, the second high-temperature-resistant insulating member 50 can be bonded to a side of the first electrical connector 31 that faces away from the battery cell 20 along the third direction.

[0122] Combine Figure 5 and Figure 6 It can be seen that according to some embodiments of the present application, all electrical connectors 30 include two electrical connection groups 34, each electrical connection group 34 includes two first electrical connectors 31, the two electrical connection groups 34 are arranged to be spaced apart from each other along the first direction, and the insulating isolation structure 40 includes two, and the two insulating isolation structures 40 are arranged in a one-to-one correspondence with the two electrical connection groups 34.

[0123] The two insulating isolation structures 40 are arranged in a one-to-one correspondence with the two electrical connection groups 34, which means that one insulating isolation structure 40 is arranged between the two first electrical connectors 31 of one electrical connection group 34; and / or the insulating isolation structure 40 is arranged between the battery cells 20 corresponding to the two first electrical connectors 31 of the electrical connection group 34; and the other insulating isolation structure 40 is arranged between the two first electrical connectors 31 of the other electrical connection group 34; and / or the insulating isolation structure 40 is arranged between the battery cells 20 corresponding to the two first electrical connectors 31 of the other electrical connection group 34.

[0124] In this way, by arranging two insulating isolation structures 40 in one-to-one correspondence with two groups of electrical connection groups 34, an insulating isolation structure 40 is provided between each group of electrical connection groups 34 and its two adjacent first electrical connectors 31, and / or an insulating isolation structure 40 is provided between the battery cells 20 corresponding to the two first electrical connectors 31 of each group of electrical connection groups 34. This can insulate and separate the two first electrical connectors 31 of each group of electrical connection groups 34, or insulate and separate the battery cells 20 corresponding to the two first electrical connectors 31 of each group of electrical connection groups 34, thereby increasing the creepage distance between the two first electrical connectors 31 of each group of electrical connection groups 34 or the battery cells 20 corresponding to the two first electrical connectors 31 of each group of electrical connection groups 34, thereby improving the insulation protection performance, thereby reducing the risk of high-voltage arcing and fire caused by insulation failure, and thereby improving the reliability of the battery device 100.

[0125] Furthermore, all the battery cells 20 also include a second column of battery cells 25 located at the non-edgemost edge along the first direction, the second column of battery cells 25 is adjacent to the first column of battery cells 24, one of the total positive output electrical connector 32 or the total negative output electrical connector 33 is connected to the battery cell 20 at the end of the first column of battery cells 24, and the other of the total positive output electrical connector 32 or the total negative output electrical connector 33 is connected to the battery cell 20 at the end of the second column of battery cells 25, and the total positive output electrical connector 32 and the total negative output electrical connector 33 are located on the same side.

[0126] The total positive output electrical connector 32 and the total negative output electrical connector 33 being located on the same side here means that the total positive output electrical connector 32 and the total negative output electrical connector 33 are located on the same side of the first column of battery cells 24 and the second column of battery cells 25 along the second direction.

[0127] In this way, the total positive output electrical connector 32 and the total negative output electrical connector 33 can be moved closer to the middle of one side of the battery device 100 .

[0128] The total positive output stage and the total negative output stage of the battery device 100 of the embodiment of the present application are both located toward the middle of one side of the battery device 100, that is, toward the front end of the SBOX. Therefore, an electrical connection group 34 appears to the left of the total positive output stage, and an electrical connection group 34 appears to the right of the total negative output stage.

[0129] The first column of battery cells 24 and the second column of battery cells 25 are the two middle columns of battery cells 20 among all the battery cells 20 .

[0130] In addition, an embodiment of the present application further provides an electrical device, comprising the battery device 100 in any of the above embodiments.

[0131] The electrical device of the embodiment of the present application can insulate and isolate the two first electrical connectors 31, or insulate and isolate the battery cells 20 corresponding to the two first electrical connectors 31, by providing an insulating isolation structure 40 between two adjacent first electrical connectors 31, and / or providing an insulating isolation structure 40 between the battery cells 20 corresponding to the two first electrical connectors 31, thereby increasing the creepage distance between the two first electrical connectors 31 or between the battery cells 20 corresponding to the two first electrical connectors 31, and improving the insulation protection performance, thereby reducing the risk of high-voltage arcing fire caused by insulation failure, and thereby improving the reliability of the battery device 100.

[0132] 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 them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A plurality of battery cells are arranged in rows along a first direction and in columns along a second direction; wherein the first direction is perpendicular to the second direction; a plurality of electrical connectors, each of which is electrically connected between two adjacent battery cells; all of the electrical connectors include two first electrical connectors, each of which is connected between two adjacent battery cells along the first direction, and the two first electrical connectors are adjacently arranged along the second direction; all of the electrical connectors also include a total positive output electrical connector and a total negative output electrical connector, all of the battery cells include a first column of battery cells located at a non-edgemost position along the first direction, and the total positive output electrical connector or the total negative output electrical connector is connected to the battery cell at the end of the first column of battery cells; and An insulating isolation structure is provided between the two first electrical connectors; and / or the insulating isolation structure is provided between the battery cells corresponding to the two first electrical connectors.

2. The battery device according to claim 1, wherein: The insulating isolation structure includes a beam structure; the beam structure is arranged between the battery cells corresponding to the two first electrical connectors; or The beam structure is disposed between the two first electrical connectors and between the battery cells corresponding to the two first electrical connectors.

3. The battery device according to claim 2, characterized in that The beam structure extends along the first direction from the battery cells in a first column to the battery cells in a last column.

4. The battery device according to claim 2, wherein: The beam structure is configured as one of a mounting beam or a cross beam.

5. The battery device according to claim 2, wherein: The insulating isolation structure further includes an insulating film, which is disposed along the second direction between the battery cells corresponding to the two first electrical connectors and the beam structure.

6. The battery device according to claim 5, characterized in that The insulating film is one of a PP insulating film, a PE insulating film or a PET insulating film.

7. The battery device according to claim 1, wherein: The insulating isolation structure includes an insulating and heat-insulating layer and a first high-temperature-resistant insulating member. The insulating and heat-insulating layer is arranged between the battery cells corresponding to the two first electrical connectors; the first high-temperature-resistant insulating member is arranged between the two first electrical connectors.

8. The battery device according to claim 7, characterized in that The insulating heat insulation layer is a PI layer or an aerogel insulation layer.

9. The battery device according to claim 7, wherein: The first high-temperature resistant insulating member is a PU layer or a silicone rubber layer.

10. The battery device according to any one of claims 1 to 9, characterized in that: The battery device further includes a second high-temperature resistant insulating member covering a side of the first electrical connector facing away from the battery cell along a third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

11. The battery device according to claim 10, characterized in that The second high temperature resistant insulating member is one of TC composite tape, mica paper, glass fiber sheet, and ceramic rubber sheet.

12. The battery device according to any one of claims 1 to 9, characterized in that: The electrical connectors include two electrical connector groups, each of which includes two first electrical connectors, and the two electrical connector groups are spaced apart from each other along the first direction; The insulating isolation structures include two, and the two insulating isolation structures are arranged in a one-to-one correspondence with the two groups of electrical connection groups.

13. The battery device according to claim 12, characterized in that All of the battery cells also include a second column of battery cells located at a non-edgemost position along the first direction, the first column of battery cells are adjacent to the second column of battery cells, one of the total positive output electrical connector or the total negative output electrical connector is connected to the battery cell at the end of the first column of battery cells; the other of the total positive output electrical connector or the total negative output electrical connector is connected to the battery cell at the end of the second column of battery cells, and the total positive output electrical connector and the total negative output electrical connector are located on the same side.

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

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