Battery device and electric device

Abstract

The utility model is applicable to the technical field of power batteries, and provides a battery device and a power utilization device.The battery device comprises a box body, a battery pack, a battery pack and a battery pack, the battery monomer is accommodated in the first cavity; the profiling piece is contained in the first cavity, the profiling piece comprises a profiling piece main body and an insulating layer, and the insulating layer is arranged on at least one side of the profiling piece main body; according to the battery device provided by the embodiment of the invention, the battery device comprises the profiling part, and under the condition that the capacity of the battery device is reduced, the profiling part can occupy a vacant mounting position formed by the reduction of the battery monomers, so that the adjacent battery monomers are constrained through the profiling part, and the overall stability of the battery device is improved; the profiling piece comprises the profiling piece main body and the insulating layer arranged outside the profiling piece main body, so that the risk of short circuit caused by the contact of the profiling piece main body with the single battery or other electrical structures is reduced, and the stability and the safety of the battery device are further improved.

Description

Technical Field

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

[0002] Different electric vehicles may require different battery capacities, and the number of battery cells in the battery will change with the demand for battery capacity; this results in the battery capacity becoming smaller while the shape of the battery box remains unchanged, resulting in vacant installation positions in the box, and the battery cells adjacent to the vacant installation positions are prone to lack of constraints, resulting in a decrease in the overall stability of the battery. If you want to reduce or eliminate vacant installation positions, you need to redesign the box shape, battery cell arrangement structure, processing equipment, etc., which greatly increases the processing and manufacturing costs. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can alleviate the negative impact of the capacity change of the battery device on the stability of the battery device.

[0004] In a first aspect, an embodiment of the present application provides a battery device, comprising: a box body, a first cavity is provided in the box body; a battery cell is accommodated in the first cavity; a contour piece is accommodated in the first cavity, the contour piece comprises a contour piece body and an insulating layer, and the insulating layer is provided on at least one side of the contour piece body.

[0005] In the technical solution of this embodiment, the battery device includes a contour piece. When the capacity of the battery device is reduced, the contour piece can occupy the vacant installation position formed by the reduction of battery cells, so as to provide constraints on adjacent battery cells through the contour piece, thereby improving the overall stability of the battery device; the contour piece includes a contour piece main body and an insulating layer arranged on the outside of the contour piece main body, so as to reduce the risk of short circuit caused by the contour piece main body contacting the battery cells or other electrical structures, thereby further improving the stability and safety of the battery device.

[0006] In some embodiments, the material of the insulating layer includes any one of plastic, silicone, rubber, and resin.

[0007] The technical solution of this embodiment provides some materials for the insulating layer so that the insulating layer has lower conductivity, thereby reducing the risk of short circuit caused by the main body of the contoured part contacting the battery cell or other electrical structures.

[0008] In some embodiments, the relative dielectric constant of the insulating layer is in the range of 1.8 to 3.5.

[0009] The technical solution of this embodiment provides a range of relative dielectric constants of some insulating layers, so that the insulating layers have lower conductivity and reduce the risk of short circuit caused by the main body of the contoured part contacting the battery cell or other electrical structures.

[0010] In some embodiments, the relative dielectric constant of the insulating layer is in the range of 2.2 to 3.0.

[0011] The technical solution of this embodiment further provides a range of relative dielectric constants of some insulating layers, so that the insulating layers have lower conductivity and reduce the risk of short circuit caused by the main body of the contoured part contacting the battery cell or other electrical structures.

[0012] In some embodiments, the thickness of the insulating layer ranges from 0.1 mm to 1 mm.

[0013] The technical solution of this embodiment provides some thickness ranges of the insulating layer so that the insulating layer can have better insulation performance and reduce the risk of breakdown of the insulating layer, and can also reduce the thickness of the insulating layer to reduce the space occupied by the insulating layer, reduce the negative impact of the insulating layer on the strength of the contoured part, and reduce costs.

[0014] In some embodiments, the thickness of the insulating layer ranges from 0.3 mm to 0.5 mm.

[0015] The technical solution of this embodiment further provides some thickness ranges of the insulating layer, so that the insulating layer can have better insulation performance and reduce the risk of breakdown of the insulating layer, and can also reduce the thickness of the insulating layer to reduce the space occupied by the insulating layer, reduce the negative impact of the insulating layer on the strength of the contoured part, and reduce costs.

[0016] In some embodiments, the insulating layer includes a film layer formed on the shaped part body; or the insulating layer includes a plate structure arranged on the shaped part body; or the insulating layer includes an injection molded overmolded structure formed on the shaped part body; or the insulating layer includes a filamentary winding structure formed on the shaped part body.

[0017] The technical solution of this embodiment provides some structures of the insulating layer, so that the insulating layer can be formed on the contoured part body more stably.

[0018] In some embodiments, the contoured member body includes two oppositely disposed end plates and at least two side plates, and the side plates are connected end to end in sequence; in the arrangement direction of the end plates, the two ends of each side plate are respectively connected to the two end plates, and the insulating layer is arranged on the side plates and / or the end plates.

[0019] In the technical solution of this embodiment, the main body of the shaped member includes an end plate and a side plate, and an insulating layer is provided on the end plate and / or the side plate to separate adjacent battery cells or other electrical structures through the insulating layer, thereby reducing the risk of short circuit caused by the contact of the shaped member main body with the battery cells or other electrical structures; in this embodiment, the insulating layer can be specifically provided on one side of the shaped member main body to separate the shaped member main body from the adjacent battery cells or other electrical structures.

[0020] In some embodiments, one of the two end plates is connected to the inner wall of the box body; the insulating layer covers the other of the two end plates, and / or the insulating layer covers at least one side plate.

[0021] In the technical solution of this embodiment, one of the two end plates is connected to the box body. At this time, the end plate is difficult to contact the battery cell or other electrical structures. The risk of short circuit caused by the end plate is low, and the insulating layer does not need to cover the end plate, thereby reducing the coverage area of ​​the insulating layer and reducing costs.

[0022] In some embodiments, one of the two end plates is connected to the inner wall of the box body by insulating glue.

[0023] In the technical solution of this embodiment, the end plate connected to the box body is bonded to the box body by insulating glue. This arrangement can not only fix the main body of the profiling member on the box body, but also improve the insulation performance of the profiling member.

[0024] In some embodiments, an insulating layer covers the two end plates and each side plate.

[0025] In the technical solution of this embodiment, the insulating layer completely covers the shaped member body to better improve the insulation performance of the shaped member, thereby further reducing the risk of the shaped member body contacting the battery cell or other electrical structures and causing a short circuit.

[0026] In some embodiments, the material of the contour body includes any one of plastic, ceramic, fiber, wood or resin.

[0027] The technical solution of this embodiment provides some materials for the main body of the contour piece, so that the contour piece can provide good support and restraint for the battery cell.

[0028] In some embodiments, the material of the contour body includes metal.

[0029] In the technical solution of this embodiment, the material of the main body of the contour piece includes metal, so that the main body of the contour piece has higher strength, so that the contour piece can better provide support and restraint for adjacent battery cells.

[0030] In some embodiments, a second cavity is disposed in the main body of the contour element, and a reinforcing structure connected to the main body of the contour element is disposed in the second cavity.

[0031] In the technical solution of this embodiment, a second cavity is provided in the main body of the shaped member to reduce the weight of the shaped member and reduce the negative impact of the shaped member on the overall weight of the battery device; a reinforcing structure is provided in the second cavity to improve the overall strength of the shaped member, thereby improving the supporting performance of the shaped member for adjacent battery cells.

[0032] In a second aspect, some embodiments of the present application further provide an electrical device, including the battery device provided by some embodiments of the first aspect.

[0033] 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

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0036] Figure 2 A schematic diagram of an exploded structure of a battery device provided in some embodiments of the present application;

[0037] Figure 3 A schematic diagram of an exploded structure of a battery cell provided in some embodiments of the present application;

[0038] Figure 4 A schematic top view of a battery device with a first portion removed provided by some embodiments of the present application;

[0039] Figure 5 A schematic diagram of an exploded structure of a contoured member in a battery device provided in some embodiments of the present application;

[0040] Figure 6 Schematic diagram of the exploded structure of the contoured member in the battery device provided in some other embodiments of the present application.

[0041] The meanings of the marks in the figure are:

[0042] 1000. Vehicles;

[0043] 100. Battery device;

[0044] 10. Box body; 101. First cavity; 11. First part; 12. Second part;

[0045] 20. Battery cell; 21. Housing; 22. End cap; 23. Electrode assembly; 24. Electrode terminal;

[0046] 30. profiling member; 31. profiling member body; 311. end plate; 312. side plate; 313. second cavity; 32. insulating layer; 33. reinforcing structure;

[0047] 200, motor;

[0048] 300. Controller. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

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

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] At present, from the perspective of market development, the application of power battery devices is becoming more and more extensive. Power battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery devices, the market demand is also constantly expanding.

[0058] For different electrical devices, especially for different models of the same device, the required battery device capacity may be different, and the number of battery cells in the battery device will change with the change in the demand for the battery device capacity. This leads to the situation that in different models of the same device, if the shape of the battery device box is to remain unchanged, for models with smaller battery device capacity, some of the battery cells in the box need to be removed and empty installation positions are formed. Because battery cells will expand during the charging and discharging process, and the expansion cycle of each battery cell in the same battery device is roughly the same, when the box is fully loaded with battery cells, the expansion deformation of adjacent battery cells can interact and inhibit each other, but if there is an empty installation position in the box, the battery cells around the empty installation position will lack constraints and cause excessive expansion of the battery cells, and cause damage to the battery cells, thereby reducing the overall stability of the battery device.

[0059] In order to reduce the vacant space while meeting the capacity requirements of the battery device, it is necessary to redesign the box shape, and redesign the battery cell arrangement structure, processing equipment, installation process, etc., which greatly increases the processing and manufacturing costs.

[0060] Based on the above considerations, in order to reduce the negative impact of vacant space on the stability of the battery device when the capacity of the battery device changes and the shape of the box remains unchanged, the present application provides a battery device, including a battery cell and a contour piece, the contour piece is used to be installed on the vacant mounting position formed after the battery cell is removed, and the contour piece can provide support and constraint for adjacent battery cells after installation; the contour piece includes a contour piece body and an insulating layer, and the insulating layer is provided on at least one side of the contour piece body.

[0061] In such a battery device, when the capacity of the battery device is reduced and some battery cells are removed, the contour piece can occupy the vacant installation position formed by the reduction of battery cells, and provide constraints on adjacent battery cells through the contour piece, thereby improving the overall stability of the battery device; the provision of the contour piece makes it unnecessary to design different battery device cases for different needs, thereby reducing the processing cost of the battery device; the contour piece includes a contour piece body and an insulating layer, and the insulating layer separates the contour piece body from adjacent battery cells or other electrical structures to reduce the possibility of adjacent battery cells or other electrical structures contacting the contour piece body and causing a short circuit, thereby reducing the risk of the contour piece contacting the battery cells or other electrical structures and causing a short circuit, and further improving the stability and safety of the battery device.

[0062] The battery device disclosed in the embodiments of the present application can be used in an electrical device that uses the battery device as a power source or various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0063] 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.

[0064] refer to Figure 1 , Figure 1A schematic diagram of the structure 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, and 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, and 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 be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 300 and a motor 200, and the controller 300 is used to control the battery device 100 to power the motor 200, for example, for starting, navigating and driving the vehicle 1000.

[0065] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve 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.

[0066] refer to Figure 2 , Figure 2 Schematic diagram of an exploded structure of a battery device 100 provided in some embodiments of the present application. The battery device 100 (Battery Apparatus) mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel, or in mixed connection through a busbar component.

[0067] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20; as an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0068] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0069] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0070] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0071] As an example, the box 10 may include a first portion 11 and a second portion 12. The first portion 11 and the second portion 12 are buckled together to form a closed receiving cavity inside the box 10 to accommodate the battery cell assembly. The closed here means covered or closed, which may be sealed or unsealed.

[0072] As an example, the box body 10 may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed accommodation cavity is formed inside the box body 10 to accommodate the battery monomer assembly.

[0073] As an example, the box 10 may be a part of the chassis structure of the vehicle 1000. For example, the roof of the box 10 may become at least a part of the floor of the vehicle 1000, or the frame of the box 10 may become at least a part of the cross beam and longitudinal beam of the vehicle 1000.

[0074] In some embodiments, the battery device 100 refers to an energy storage device, which includes a box 10, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, and the like.

[0075] refer to Figure 3 , Figure 3 The exploded structure diagram of the battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit constituting the battery device 100. As shown in the figure, the battery cell 20 includes an end cap 22, a housing 21, an electrode assembly 23 and other functional components.

[0076] The end cap 22 refers to a component that covers the opening of the shell 21 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 22 can be adapted to the shape of the shell 21 to match the shell 21. Optionally, the end cap 22 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 22 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 24 can be provided on the end cap 22. The electrode terminal 24 can be used to electrically connect with the electrode assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 22 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 22 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 22, and the insulating member may be used to isolate the electrical connection components in the housing 21 from the end cap 22 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0077] The shell 21 is a component used to cooperate with the end cap 22 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte and other components. The shell 21 and the end cap 22 can be independent components, and an opening can be set on the shell 21, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 22 at the opening. Without limitation, the end cap 22 and the shell 21 can also be integrated. Specifically, the end cap 22 and the shell 21 can form a common connection surface before other components are put into the shell, and when the interior of the shell 21 needs to be encapsulated, the end cap 22 covers the shell 21. The shell 21 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the shell 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0078] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be included in the housing 21. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 23, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device 100, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals 24 to form a current loop.

[0079] First, refer to Figures 2 to 5 The embodiment of the present application provides a battery device 100, including a box body 10, a battery cell 20 and a contour member 30; a first cavity 101 is provided in the box body 10; the battery cell 20 is accommodated in the first cavity 101; the contour member 30 is accommodated in the first cavity 101, and the contour member 30 includes a contour member body 31 and an insulating layer 32, and the insulating layer 32 is provided on at least one side of the contour member body 31.

[0080] In the figure, the direction of the X-axis is the length direction of the battery device 100 , the direction of the Y-axis is the width direction of the battery device 100 , and the direction of the Z-axis is the height direction of the battery device 100 .

[0081] The box 10 refers to a structure in the battery device 100 for providing a fixed foundation for the battery cell 20 or other structures. The box 10 may be prismatic, cylindrical or other shapes; the material of the box 10 may include metal, plastic or other materials.

[0082] The battery cell 20 is the smallest unit constituting the battery device 100 . The shape of the battery cell 20 may be a cuboid, a cylinder, or other shapes. The number of the battery cells 20 may be two, or three or more.

[0083] When there are multiple battery cells 20, the multiple battery cells 20 can be arranged along the length direction X of the battery device 100, or along the width direction Y of the battery device 100. The multiple battery cells 20 can also be arranged along other directions to form an array structure arranged along multiple directions.

[0084] Adjacent battery cells 20 can abut against each other, and adjacent battery cells 20 can abut against each other in a natural state when not working. Adjacent battery cells 20 can also be arranged at intervals in a natural state when not working, and abut against each other when the battery device 100 is charged and discharged, that is, when the battery device 100 is charged and discharged, two adjacent battery cells 20 expand and deform and abut against each other to suppress the amount of expansion deformation; two adjacent battery cells 20 can be made to directly contact and abut against each other; an intermediate structure can also be provided between two adjacent battery cells 20, and the intermediate structure can abut against the adjacent battery cells 20, so that the adjacent battery cells 20 indirectly abut against each other through the intermediate structure; when the battery cells 20 expand during charging and discharging, the adjacent battery cells 20 abut against each other and can constrain each other through their respective expansion forces to suppress the expansion deformation of the battery cells 20 and reduce the damage that may be caused by the expansion deformation of the battery cells 20.

[0085] The shaped member 30 refers to a structural member in the battery device 100 that is used to replace the battery cell 20 and occupy the vacant installation position, that is, the shaped member 30 can form a battery cell assembly together with the battery cell 20; the number of the shaped member 30 can be one or more; one shaped member 30 can be used to replace only one battery cell 20, in which case the volume of the shaped member 30 is similar to that of one battery cell 20, and one shaped member 30 can also be used to replace two or more battery cells 20, in which case the volume of the shaped member 30 is an integer multiple of two or more battery cells 20.

[0086] The contour member 30 includes a contour member body 31 and an insulating layer 32 .

[0087] The contour member body 31 refers to the main structure of the contour member 30, which can occupy a vacant installation position and provide support and constraint for the adjacent battery cell 20; the shape of the contour member body 31 can be a rectangular parallelepiped, a prism, a cylinder or other shapes, and the shape of the contour member body 31 can also be set according to the shape of the battery cell 20.

[0088] When a shaped piece 30 replaces only one battery cell 20 , the volume of the shaped piece body 31 can be close to the volume of one battery cell 20 ; when a shaped piece 30 is used to replace two or more battery cells 20 , the volume of the shaped piece body 31 can be an integer multiple of two or more battery cells 20 .

[0089] The insulating layer 32 refers to an insulating structure arranged on the shaped member body 31. The insulating layer 32 is used to separate the shaped member body 31 from the adjacent battery cells 20 or other electrical structures, so that the adjacent battery cells 20 or other electrical structures are difficult to directly contact the shaped member body 31, thereby reducing the risk of short circuit of the adjacent battery cells 20 or other electrical structures; at this time, the material of the shaped member body 31 may include a material with higher strength but better conductivity, such as metal.

[0090] The insulating layer 32 can be provided on only one side of the shaped member body 31 and only cover part of the shaped member body 31, that is, the insulating layer 32 can be provided on only one side of the shaped member body 31, so as to specifically separate the corresponding side of the shaped member body 31 from the adjacent battery cell 20 or electrical structure; the insulating layer 32 can also cover multiple different sides of the shaped member body 31; the insulating layer 32 can also cover the entire shaped member body 31, so as to better reduce the risk of the adjacent battery cell 20 or other electrical structures contacting the shaped member body 31.

[0091] The shape of the insulating layer 32 may be circular, square or other shapes. The shape of the insulating layer 32 may also be set according to the shape of the contoured body 31 , the shape of the adjacent battery cell 20 or other electrical structures.

[0092] The force exerted by the contour body 31 on the adjacent battery cell 20 can be indirectly applied to the adjacent battery cell 20 through the insulating layer 32 .

[0093] The insulating layer 32 can be a coating structure formed on the shaped part body 31, and is arranged on the shaped part body 31 by spraying, coating, etc.; the insulating layer 32 can be a film layer structure, and is arranged on the shaped part body 31 by bonding, etc.; the insulating layer 32 can also be a plate structure, and is arranged on the shaped part body 31 by bonding, welding, etc.; it can be understood that the insulating layer 32 can also be other structures, and is not limited to the above-mentioned ones.

[0094] The material of the insulating layer 32 may include plastic, ceramic, mica or other materials with good insulating properties.

[0095] Since the shaped member 30 is mainly used to replace the battery cell 20 and occupy the vacant installation position, the shaped member 30 may not provide electrical energy but only serve as a structural member, and the shaped member body 31 may also only serve as a structural member. In this case, the shaped member 30 may be a dummy battery cell or a dummy battery core, and is not electrically connected to the battery cell 20 with charge and discharge capabilities; since the shaped member 30 does not need to be charged and discharged, it does not have the expansion and contraction that may occur during the charging and discharging process, so the shaped member 30 can also reduce the squeezing of adjacent battery cells 20.

[0096] Since the contour piece 30 is mainly used to replace the battery cell 20, the shape of the contour piece body 31 can be similar to or the same as the shape of the battery cell 20; for example, the battery cell 20 can be a square shell battery cell, a blade battery cell, a cylindrical battery cell, a laminated battery cell or other battery cells, and the shape of the contour piece body 31 can be set according to the shape of the battery cell 20.

[0097] The profiling member 30 can abut against the adjacent battery cell 20 to suppress the deformation of the adjacent battery cell 20. The profiling member 30 can abut against the adjacent battery cell 20 when the battery device 100 is in a non-operating natural state. The profiling member 30 can also be spaced apart from the adjacent battery cell 20 when the battery device 100 is in a non-operating natural state, and abut against the adjacent battery cell 20 when the battery device 100 is in a charging and discharging state. That is, when the battery device 100 is charged and discharged, the adjacent battery cell 20 expands and deforms and abuts against the profiling member 30. At this time, the profiling member 30 can suppress the further expansion and deformation of the adjacent battery cell 20; the profiling member 30 can suppress the deformation of the adjacent battery cell 20. The shape-matching member 30 and the adjacent battery cell 20 are in direct contact and abut against each other. Alternatively, an intermediate structure may be provided between the shape-matching member 30 and the adjacent battery cell 20, and the intermediate structure may be abutted against the adjacent shape-matching member 30 and the adjacent battery cell 20, so that the shape-matching member 30 and the adjacent battery cell 20 are indirectly abutted against each other through the intermediate structure. When the battery cell 20 expands during charging and discharging, the shape-matching member 30 may abut against the adjacent battery cell 20 and suppress the expansion deformation of the battery cell 20, thereby reducing the damage that may be caused by the expansion deformation of the battery cell 20.

[0098] When the required capacity of the battery device 100 is reduced, some battery cells 20 will be taken out from the box body 10 or the module composed of the battery cells 20, and vacant installation positions will be formed. At this time, the contour member 30 can be set in the box body 10 or the module composed of the battery cells 20 to occupy the vacant installation position, and the contour member 30 can be used to suppress the deformation of the adjacent battery cells 20; wherein, the installation position refers to the space where the battery cells 20 are installed in the box body 10, and one installation position corresponds to one battery cell 20. The installation position can be surrounded by a structure or just a set space. The vacant installation position is the installation position where no battery cell 20 is installed.

[0099] When the profiling member 30 is provided in the battery device 100 , the profiling member 30 and the battery cells 20 can form a module and be installed in the box 10 ; or after the battery cells 20 are installed in the box 10 , some of the battery cells 20 can be removed and replaced with the profiling member 30 .

[0100] When the profiling member 30 is provided in the battery device 100, the profiling member 30 and other battery cells 20 may coexist on the surrounding side of the battery cell 20, in which case the battery cell 20 may abut against other adjacent battery cells 20 and the profiling member 30; the profiling member 30 may also be present all around the battery cell 20, in which case the battery cell 20 may abut against adjacent profiling members 30.

[0101] It can be understood that the sides of the contoured member 30 can also be other contoured members 30 , and in this case, the contoured member 30 can abut against other adjacent contoured members 30 .

[0102] In this embodiment, the battery device 100 includes a contour piece 30. When the capacity of the battery device 100 is reduced, the contour piece 30 can occupy the vacant installation position formed by the reduction of the battery cells 20, so as to provide constraints to the adjacent battery cells 20 through the contour piece 30, thereby improving the overall stability of the battery device 100; the contour piece 30 includes a contour piece body 31 and an insulating layer 32 arranged outside the contour piece body 31, so as to reduce the risk of short circuit caused by the contour piece body 31 contacting the battery cells 20 or other electrical structures, thereby further improving the stability and safety of the battery device 100.

[0103] In some embodiments, the material of the insulating layer 32 includes any one of plastic, silicone, rubber, and resin.

[0104] Plastic has excellent insulation properties, and also has the advantages of being light, easy to process, corrosion-resistant, and wear-resistant; the insulating layer 32 can be a plate comprising plastic, or a film layer comprising plastic, or a spray layer or coating structure whose raw materials include plastic; the plastic can include polypropylene (PP), polyethylene (PE), polycarbonate (PC) or other plastics.

[0105] Silicone has excellent insulation properties, and also has the advantages of high temperature resistance, good chemical stability, and aging resistance. The insulating layer 32 can be a plate including silicone, a film layer including silicone, or a spray layer or coating layer structure whose raw material includes silicone.

[0106] Rubber has good insulation performance, and also has the advantages of good elasticity, good sealing performance, wear resistance, aging resistance, corrosion resistance, etc.; the insulating layer 32 can be a plate including rubber, or a film layer including rubber, or a spray layer or coating layer structure whose raw materials include rubber; the rubber can include natural rubber, silicone rubber, butyl rubber or other rubber.

[0107] The resin has good insulation properties, and also has the advantages of high temperature resistance, corrosion resistance, and easy processing and molding; the insulating layer 32 can be a plate including resin, or a film layer including resin, or a spray layer or coating layer structure whose raw materials include resin; the resin can include epoxy resin or other resins.

[0108] It is understandable that, under the premise that the insulating layer 32 has insulating properties, the insulating layer 32 may also include other materials, not only plastic, silicone, rubber, resin, etc.

[0109] On the premise that the material of the insulating layer 32 includes plastic, silicone, rubber, resin and the like, the material of the contour member body 31 can be selected from materials with higher strength without considering the insulating properties of the material, so that the contour member 30 can have higher strength, thereby being able to better provide constraints for adjacent battery cells 20; for example, the material of the contour member body 31 can include carbon fiber, metal and the like.

[0110] This embodiment provides some materials for the insulating layer 32 so that the insulating layer 32 has a lower conductivity, thereby reducing the risk of short circuit caused by the contour body 31 contacting the battery cell 20 or other electrical structures.

[0111] In some embodiments, the relative dielectric constant of the insulating layer 32 is in the range of 1.8 to 3.5.

[0112] The relative dielectric constant is a parameter used to characterize the dielectric properties of a material. The smaller the relative dielectric constant, the better the insulation performance of the material.

[0113] The relative dielectric constant of the insulating layer 32 ranges from 1.8 to 3.5, that is, the relative dielectric constant of the insulating layer 32 can be 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.5 or other values.

[0114] For example, the relative dielectric constant of the insulating layer 32 can be 1.8. In this case, the insulating layer 32 can be a polystyrene structure with pores, or other structures or composite materials. In this case, the insulating layer 32 has excellent insulation performance to better reduce the negative impact that the contoured part 30 may have on the battery cells 20 or other electrical structures in the battery device 100.

[0115] For example, the relative dielectric constant of the insulating layer 32 can be 2.6, and the material of the insulating layer 32 can include polystyrene (PS), polypropylene or other materials; at this time, the insulating layer 32 has good insulation performance and low cost, which can not only reduce the negative impact that the contour part 30 may have on the battery cell 20 or other electrical structures in the battery device 100, but also reduce the cost.

[0116] For example, the relative dielectric constant of the insulating layer 32 can be 3.5, and the material of the insulating layer 32 can include polyvinyl chloride (PVC), alumina ceramics, silicon nitride ceramics or other materials; at this time, there are many material options for the insulating layer 32, and different materials can be selected according to different needs, so that the insulating layer 32 has both insulating properties and other properties, such as high strength, high temperature resistance, high voltage resistance and the like.

[0117] Since the dielectric constant of the same material is different under different factors such as temperature, the relative dielectric constant of the insulating layer 32 provided in this embodiment should be within the range of 1.8 to 3.5 in various cases; for example, in an environment of 20°C, the relative dielectric constant of the insulating layer 32 can be within the range of 1.8 to 3.5; for example, in an environment of 50°C, the relative dielectric constant of the insulating layer 32 can be within the range of 1.8 to 3.5. At this time, the insulating layer 32 can have good insulation performance under normal use of the battery device 100, thermal runaway or other working conditions.

[0118] The relative dielectric constant of the insulating layer 32 can be measured by capacitance method, resonant cavity method, transmission line method, free space method, etc. For example, the capacitance method can be used for measurement. First, a parallel plate capacitor with a known capacitance value is prepared, and the material to be tested can be placed between its two plates. Then, the material to be tested is inserted between the two plates of the parallel plate capacitor. Then, the capacitance value of the capacitor is measured using a capacitance meter. The relative dielectric constant of the material to be tested is Cx / C0, where Cx is the capacitance value of the capacitor measured by the capacitance meter, and C0 is the capacitance value when a material with a known dielectric constant (such as air) exists between the two plates of the parallel plate capacitor.

[0119] This embodiment provides some ranges of relative dielectric constants of the insulating layer 32 so that the insulating layer 32 has lower conductivity and reduces the risk of short circuit caused by the contact of the contour body 31 with the battery cell 20 or other electrical structures.

[0120] In some embodiments, the relative dielectric constant of the insulating layer 32 is in the range of 2.2 to 3.0.

[0121] The relative dielectric constant of the insulating layer 32 ranges from 2.2 to 3.0, that is, the relative dielectric constant of the insulating layer 32 can be 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0 or other values.

[0122] For example, the relative dielectric constant of the insulating layer 32 can be 2.2, and the material of the insulating layer 32 can include polyethylene (PP); at this time, the insulating layer 32 has excellent insulation performance and low cost, so as to better reduce the negative impact that the contoured part 30 may have on the battery cell 20 or other electrical structures in the battery device 100. At the same time, polyethylene also has good thermal stability and chemical resistance to adapt to the operating conditions of the battery device 100.

[0123] For example, the relative dielectric constant of the insulating layer 32 can be 3.0, and the material of the insulating layer 32 can include polycarbonate (PC) or polyethylene terephthalate (PET); at this time, the insulating layer 32 has good insulation performance, which can not only reduce the negative impact that the contoured part 30 may have on the battery cell 20 or other electrical structures in the battery device 100, but also has good mechanical strength.

[0124] Since the dielectric constant of the same material is different under different factors such as temperature, the relative dielectric constant of the insulating layer 32 provided in this embodiment should be within the range of 2.2 to 3.0 in various conditions; for example, in an environment of 20°C, the relative dielectric constant of the insulating layer 32 can be within the range of 2.2 to 3.0; for example, in an environment of 50°C, the relative dielectric constant of the insulating layer 32 can be within the range of 2.2 to 3.0. At this time, the insulating layer 32 can have good insulation performance under normal use of the battery device 100, thermal runaway or other working conditions.

[0125] The present embodiment further provides some ranges of relative dielectric constants of the insulating layer 32 , so that the insulating layer 32 has lower conductivity, thereby reducing the risk of short circuit caused by the contact of the contour body 31 with the battery cell 20 or other electrical structures.

[0126] In some embodiments, the thickness of the insulating layer 32 ranges from 0.1 mm to 1 mm.

[0127] The thickness of the insulating layer 32 is positively correlated with the insulating performance of the insulating layer 32, that is, the thicker the insulating layer 32 is, the better the insulating performance of the insulating layer 32 is, the less likely the insulating layer 32 is to be broken down, and the more difficult it is for adjacent battery cells 20 or other electrical structures to be electrically connected to the contour body 31 and cause a short circuit.

[0128] The thickness of the insulating layer 32 is also related to the volume of the insulating layer 32. The thicker the insulating layer 32 is, the larger the volume of the insulating layer 32 is. When the overall volume of the shaped part 30 is constant, the increase in the volume of the insulating layer 32 will cause the volume of the shaped part body 31 to decrease, and cause the supporting performance of the shaped part body 31 to decrease, thereby causing the overall strength of the shaped part 30 to decrease.

[0129] Accordingly, the thickness of the insulating layer 32 is in the range of 0.1 mm to 1 mm, so that the insulating layer 32 can have good insulation performance and reduce the negative impact of the insulating layer 32 on the overall strength of the contoured member 30; the thickness of the insulating layer 32 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm or other values.

[0130] For example, the thickness of the insulating layer 32 may be 0.1 mm. In this case, the thickness of the insulating layer 32 is relatively thin, the volume of the insulating layer 32 is relatively small, and the negative impact of the insulating layer 32 on the overall strength of the contoured member 30 is relatively small.

[0131] For example, the thickness of the insulating layer 32 may be 0.55 mm. In this case, the insulating layer 32 has good insulating properties and a moderate volume, and has little negative impact on the overall strength of the contoured member 30 .

[0132] For example, the thickness of the insulating layer 32 may be 1.0 mm. In this case, the thickness of the insulating layer 32 is relatively large, and the insulating performance of the insulating layer 32 is relatively strong.

[0133] This embodiment provides some thickness ranges of the insulating layer 32 so that the insulating layer 32 can have better insulation performance and reduce the risk of the insulating layer 32 being broken down, and can also reduce the thickness of the insulating layer 32 to reduce the space occupied by the insulating layer 32, reduce the negative impact of the insulating layer 32 on the strength of the contoured part 30, and reduce costs.

[0134] In some embodiments, the thickness of the insulating layer 32 ranges from 0.3 mm to 0.5 mm.

[0135] The thickness of the insulating layer 32 ranges from 0.3 mm to 0.5 mm, so that the insulating layer 32 can have good insulation performance and reduce the negative impact of the insulating layer 32 on the overall strength of the contoured member 30; the thickness of the insulating layer can be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm or other values.

[0136] For example, the thickness of the insulating layer 32 may be 0.3 mm. In this case, the thickness of the insulating layer 32 is relatively thin, the volume of the insulating layer 32 is relatively small, and the negative impact of the insulating layer 32 on the overall strength of the contoured member 30 is relatively small.

[0137] For example, the thickness of the insulating layer 32 may be 0.4 mm. In this case, the insulating layer 32 has good insulating properties and a moderate volume, and has little negative impact on the overall strength of the contoured member 30 .

[0138] For example, the thickness of the insulating layer 32 may be 0.5 mm. In this case, the thickness of the insulating layer 32 is relatively large, and the insulating performance of the insulating layer 32 is relatively strong.

[0139] This embodiment further provides some thickness ranges of the insulating layer 32 so that the insulating layer 32 can have better insulation performance and reduce the risk of the insulating layer 32 being broken down, and can also reduce the thickness of the insulating layer 32 to reduce the space occupied by the insulating layer 32 and reduce the negative impact of the insulating layer 32 on the strength of the contoured part 30.

[0140] In some embodiments, the insulating layer 32 includes a film layer formed on the shaped part body 31; or the insulating layer 32 includes a plate structure arranged on the shaped part body 31; or the insulating layer 32 includes an injection-molded overmolded structure formed on the shaped part body 31; or the insulating layer 32 includes a filamentary winding structure formed on the shaped part body 31.

[0141] The insulating layer 32 may include a film layer formed on the shaped part body 31. The film layer refers to a layer structure formed on the shaped part body 31. The film layer may be directly formed on the shaped part body 31 by spraying or the like, or may be an independent film structure and connected to the shaped part body 31 by bonding or the like. The insulating layer 32 includes a film layer, which can reduce the space occupied by the insulating layer 32, so that the shaped part body 31 can better provide constraints for adjacent battery cells 20.

[0142] The insulating layer 32 may also include a plate structure arranged on the shaped part body 31. In this case, the plate structure may be a hard structure or a flexible structure; the plate structure may be connected to the shaped part body 31 by bonding, welding, screwing or other means; the plate structure is easier to connect to the shaped part body 31, which can reduce the difficulty of arranging the insulating layer 32 on the shaped part body 31.

[0143] The insulating layer 32 may also include an injection molding overmolding structure formed on the shaped part body 31. The injection molding overmolding refers to a process of forming the material of the insulating layer 32 on the corresponding side of the shaped part body 31 through an injection molding process. After the insulating layer 32 material is formed on the shaped part body 31 through the injection molding overmolding process, the injection molding overmolding structure provided on the shaped part body 31 can be formed; making the insulating layer 32 include the injection molding overmolding structure can make the insulating layer 32 better combined with the shaped part body 31, reduce the risk of the insulating layer 32 falling off, and also enable the insulating layer 32 to better cover the shaped part body 31; for example, when the insulating layer 32 completely covers the shaped part body 31, the insulating layer 32 is formed on the shaped part body 31 through the injection molding overmolding process, which can better cover the shaped part body 31 and reduce the risk of the shaped part body 31 being exposed.

[0144] The insulating layer 32 may also include a filamentary winding structure formed on the shaped part body 31. The filamentary winding structure refers to a structure in which the material of the insulating layer 32 is formed into a filamentary shape and is wound on the shaped part body 31 according to a certain trajectory and method. The insulating layer 32 including the filamentary winding structure can better combine the insulating layer 32 with the shaped part body 31, thereby reducing the risk of the insulating layer 32 falling off. At the same time, the overall strength of the insulating layer 32 can be improved through the tight winding and layout of the filamentary material. For example, when the insulating layer 32 completely covers the shaped part body 31, the insulating layer 32 is a filamentary winding structure that can better cover the shaped part body 31, thereby reducing the risk of the shaped part body 31 being exposed.

[0145] This embodiment provides some structures of the insulating layer 32 so that the insulating layer 32 can be formed on the contour member body 31 .

[0146] refer to Figure 4 , Figure 5 In some embodiments, the contoured member body 31 includes two oppositely disposed end plates 311 and at least two side plates 312, and each side plate 312 is connected end to end in sequence; in the arrangement direction of the end plates 311, the two ends of each side plate 312 are respectively connected to the two end plates 311, and the insulating layer 32 is arranged on the side plates 312 and / or the end plates 311.

[0147] The end plates 311 refer to plate structures relatively spaced apart in the shaped member body 31. The two end plates 311 may be arranged along the height direction Z of the battery device 100, or along the length direction X or the width direction Y of the battery device 100. The shape of the end plates 311 may be rectangular, circular or other shapes. The shape of the end plates 311 may also be set according to the shape of the shaped member 30. For example, the two end plates 311 are spaced apart along the height direction Z of the battery device 100.

[0148] The end plate 311 can be connected to the box body 10. The end plate 311 can be directly connected to the box body 10 or indirectly connected to the box body 10 through an intermediate structure. According to the installation arrangement of the battery cell 20 and the contour member 30, the end plate 311 can be connected to the first part 11 of the box body 10, or to the second part 12 or other positions of the box body 10. When the end plate 311 is directly connected to the box body 10, the end plate 311 can be fixedly connected to the box body 10 by welding, bonding or other methods, or can be detachably connected to the box body 10 by screwing, clamping or other methods.

[0149] The side panels 312 refer to the plate structures arranged on the sides of the profiling member body 31. The number of the side panels 312 can be two, or three or more. The side panels 312 are connected end to end in sequence to form the side structure of the profiling member body 31. Two adjacent side panels 312 can be connected by welding, bonding or other means. The side panels 312 can also be integrally formed. The shape of the side panels 312 can be rectangular, arc-shaped or other shapes. The shapes of the side panels 312 can be the same or different. The shape and number of the side panels 312 can also be set according to the shape of the profiling member 30.

[0150] Both ends of each side plate 312 are respectively connected to the two end plates 311. The side plate 312 can be connected to the end plates 311 by welding, bonding or other methods, and the side plate 312 can also be integrally formed with the two end plates 311. For example, when the two end plates 311 are arranged along the height direction Z of the battery device 100, the two ends of the side plate 312 along the height direction Z of the battery device 100 are respectively connected to the two end plates 311.

[0151] It can be understood that when the profiling member 30 is a cylindrical structure and is used to replace the cylindrical battery cell 20, the side structure of the profiling member 30 can be regarded as an integrally formed arc-shaped side plate 312 with two or more coincident axes.

[0152] The insulating layer 32 is provided on the end plate 311 and / or the side plate 312, that is, the insulating layer 32 can be provided only on the end plate 311 or the side plate 312, or can be provided on both the end plate 311 and the side plate 312; the insulating layer 32 can be provided only on one of the two end plates 311, or the insulating layer 32 can be provided on both end plates 311; the insulating layer 32 can be provided only on a certain side plate 312, or can be provided on two or all side plates 312.

[0153] It can be understood that since the insulating layer 32 is used to separate the contour body 31 from the adjacent battery cells 20 or other electrical structures, the insulating layer 32 can be set according to the positions of the adjacent battery cells 20 or other electrical structures so as to be only set on one or several end plates 311 and / or side plates 312.

[0154] In this embodiment, the shaped member body 31 includes an end plate 311 and a side plate 312, and an insulating layer 32 is provided on the end plate 311 and / or the side plate 312 to separate adjacent battery cells 20 or other electrical structures through the insulating layer 32, thereby reducing the risk of short circuit caused by the shaped member body 31 contacting the battery cells 20 or other electrical structures; in this embodiment, the insulating layer 32 can be specifically provided on one side of the shaped member body 31 to separate the shaped member body 31 from the adjacent battery cells 20 or other electrical structures.

[0155] refer to Figure 4, Figure 5 In some embodiments, one of the two end plates 311 is connected to the inner wall of the box body 10 ; the insulating layer 32 covers the other of the two end plates 311 , and / or the insulating layer 32 covers at least one side plate 312 .

[0156] One of the two end plates 311 is connected to the inner wall of the box body 10 to fix the contour member 30 in the box body 10. The end plate 311 can be connected to the first part 11 of the box body 10, or to the second part 12, or to other structural members of the box body 10; the end plate 311 can be directly connected to the inner wall of the box body 10, or indirectly connected to the inner wall of the box body 10 through an intermediate structure; the end plate 311 can be connected to the inner wall of the box body 10 by welding, bonding or other methods.

[0157] Since the end plate 311 is connected to the box body 10 , the end plate 311 is not easy to contact with the adjacent battery cells 20 or other electrical structures, so the insulating layer 32 may not cover the end plate 311 but cover other end plates 311 .

[0158] Accordingly, the insulating layer 32 can cover the other end plate 311 or the side; the insulating layer 32 can only cover the other end plate 311 or one side plate 312, or can cover multiple side plates 312; the insulating layer 32 can cover the end plate 311 and multiple side plates 312 at the same time.

[0159] For example, except for the end plate 311 connected to the inner wall of the box body 10, the insulating layer 32 can cover the other end plate 311 and all the side plates 312. In this case, the insulating layer 32 can separate the contour body 31 from the adjacent battery cell 20 or electrical structure to reduce the risk of short circuit caused by the contour body 31 contacting the battery cell 20 or other electrical structures.

[0160] For example, the insulating layer 32 may be provided only on the end plate 311 or a side plate 312 according to the positions of the adjacent battery cells 20 or other electrical structures, so as to specifically separate the contour body 31 from the adjacent battery cells 20 or electrical structures.

[0161] In this embodiment, one of the two end plates 311 is connected to the box body 10. At this time, the end plate 311 is difficult to contact the battery cell 20 or other electrical structures. The risk of short circuit caused by the end plate 311 is low, so that the insulating layer 32 does not need to cover the end plate 311, thereby reducing the coverage area of ​​the insulating layer 32 and reducing costs.

[0162] In some embodiments, one of the two end plates 311 is connected to the inner wall of the box body 10 by insulating glue.

[0163] The end plate 311 connected to the box body 10 is connected to the inner wall of the box body 10 through insulating glue. At this time, the shaped part body 31 can be connected to the inner wall of the box body 10, and the corresponding end plate 311 can be separated from the environment outside the box body 10 or the shaped part 30 through the insulating glue, so as to further reduce the risk of short circuit caused by contact between the electrical structure in the box body 10 and the shaped part body 31.

[0164] The insulating adhesive may include epoxy resin, silicone resin, polyurethane or other materials, so that the insulating adhesive can not only bond the end plate 311 to the box body 10 , but also insulate and separate the end plate 311 from the environment outside the contoured member 30 .

[0165] In this embodiment, the end plate 311 connected to the box body 10 is bonded to the box body 10 by insulating glue. This arrangement can not only fix the profiling member body 31 on the box body 10, but also improve the insulation performance of the profiling member 30.

[0166] In some embodiments, the insulating layer 32 covers the two end plates 311 and each side plate 312 .

[0167] The insulating layer 32 covers the two end plates 311 and each side plate 312 , that is, the insulating layer 32 can completely cover the contour body 31 to better insulate and separate the contour body 31 from the adjacent battery cells 20 or other electrical structures.

[0168] On the premise that the insulating layer 32 covers the two end plates 311 and each side plate 312, the insulating layer 32 can be a film layer structure, or a plate structure or other structures; the insulating layer 32 can be a structure integrally formed outside the shaped part body 31, or it can be a plurality of structural parts spliced ​​and connected to the shaped part body 31.

[0169] On the premise that the insulating layer 32 covers the two end plates 311 and each side plate 312, the insulating layer 32 can be formed on the contour piece body 31 by injection molding, filament winding, spraying or other methods, and the insulating layer 32 can also be connected to the contour piece body 31 by bonding, welding or other methods.

[0170] In this embodiment, the insulating layer 32 completely covers the shaped member body 31 to better improve the insulation performance of the shaped member 30, thereby further reducing the risk of short circuit caused by the shaped member body 31 contacting the battery cell 20 or other electrical structures.

[0171] In some embodiments, the material of the contour body 31 includes metal.

[0172] The material of the contour body 31 includes metal, for example, aluminum, copper, iron or other metals.

[0173] The material of the contoured member body 31 may include only one metal, or may include a composite material of multiple different metals; for example, the material of the contoured member body 31 may also include aluminum alloy, copper alloy or other composite materials.

[0174] Since an insulating layer 32 is provided outside the shaped member body 31 , the material selection of the shaped member body 31 can be based on strength as the main criterion. Accordingly, the material of the shaped member body 31 can include metal so that the shaped member body 31 can have higher strength, thereby being able to better provide support and restraint for adjacent battery cells 20 .

[0175] In this embodiment, the material of the contour member body 31 includes metal, so that the contour member body 31 can have higher strength, so that the contour member 30 can better provide support and restraint for the adjacent battery cells 20 .

[0176] refer to Figure 6 In some embodiments, a second cavity 313 is disposed in the contour element body 31 , and a reinforcing structure 33 connected to the contour element body 31 is disposed in the second cavity 313 .

[0177] The second cavity 313 refers to the space provided inside the contoured body 31. The second cavity 313 may be an open space having at least one opening, or a closed space. The second cavity 313 may be a rectangular space, a cylindrical space, or a space of other shapes. The number of second cavities 313 may be only one, or may be two or more.

[0178] It can be understood that when the second cavity 313 has one or more openings, the insulating layer 32 may cover one or more of these openings, or the insulating layer 32 may only cover the contour body 31 adjacent to these openings.

[0179] The second cavity 313 may contain other structures to provide support for the shaped member body 31 and to improve the strength of the shaped member 30, so that the shaped member 30 can better provide support for the adjacent battery cells 20; the second cavity 313 may not contain other structures to reduce the weight of the shaped member 30, thereby reducing the weight of the entire battery device 100.

[0180] The reinforcing structure 33 refers to a partial structure of the shaped member 30 located in the second cavity 313. The reinforcing structure 33 is used to provide support for the shaped member body 31 to improve the strength of the shaped member 30, so that the shaped member 30 can better provide support for the adjacent battery cells 20. According to the shape of the shaped member body 31, the reinforcing structure 33 can indirectly abut against the adjacent battery cells 20 through the shaped member body 31 or other intermediate structures, and the reinforcing structure 33 can also directly abut against the adjacent battery cells 20.

[0181] The reinforcing structure 33 may include a plate-like structure, a rib-like structure or a structure of other shapes; the number of the reinforcing structures 33 may be one, or two or more. When there are multiple reinforcing structures 33, the length directions of the multiple reinforcing structures 33 may be the same or different; the reinforced structural material may include plastic, ceramic, fiber, wood or resin, or other materials.

[0182] After the contour piece 30 is installed in the box body 10, when the battery cell 20 expands, the deformation force generated by the expansion of the battery cell 20 can be transmitted to the reinforcement structure 33 through the contour piece body 31, or directly transmitted to the reinforcement structure 33. At this time, the reinforcement structure 33 and the contour piece body 31 can both share part of the deformation force generated by the adjacent battery cell 20 to improve the overall strength of the contour piece 30, while also being able to suppress the expansion of the battery cell 20.

[0183] In this embodiment, a second cavity 313 is provided in the shaped member body 31 to reduce the weight of the shaped member 30 and reduce the negative impact of the shaped member 30 on the overall weight of the battery device 100; a reinforcing structure 33 is provided in the second cavity 313 to improve the overall strength of the shaped member 30, thereby improving the supporting performance of the shaped member 30 on the adjacent battery cells 20.

[0184] In some embodiments, the battery device 100 includes a housing 10 , a battery cell 20 , and a contour member 30 .

[0185] A first cavity 101 is defined in the box body 10 , and the battery cell 20 and the contour piece 30 are both disposed in the first cavity 101 .

[0186] The profiling member 30 includes a profiling member body 31 and an insulating layer 32. The profiling member body 31 includes two end plates 311 and a plurality of side plates 312 arranged at intervals along the height direction Z of the battery device 100. The plurality of side plates 312 are connected end to end in sequence, and each side plate 312 is respectively connected to the two end plates 311 at the upper and lower sides along the height direction Z of the battery device 100. At this time, the two end plates 311 and the side plates 312 form the profiling member body 31 and enclose a second cavity 313, and a reinforcing structure 33 is provided in the second cavity 313.

[0187] The insulating layer 32 covers the two end plates 311 and each side plate 312 , that is, the insulating layer 32 covers the entire contour element body 31 .

[0188] The material of the contour body 31 includes metal.

[0189] In a second aspect, some embodiments of the present application further provide an electrical device, including the battery device 100 provided in some embodiments of the first aspect. The electrical device may be a vehicle 1000, or a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, an electric vehicle, a ship, a spacecraft, etc.

[0190] In the electrical device, the battery cell 20 can be replaced by the shaped member 30 to change the capacity of the battery device 100 to meet the needs of different working conditions and different application scenarios; the shaped member 30 can provide support for adjacent battery cells 20 so that the battery device 100 can still have high stability after some battery cells 20 are removed; the shaped member 30 also has good insulation properties, thereby reducing the risk of adjacent battery cells 20 or other electrical structures contacting the shaped member 30 and causing a short circuit.

[0191] Under this configuration, the battery device 100 can conveniently adjust the capacity by replacing the battery cell 20 with the contoured member 30 without redesigning the structure of the box 10, the arrangement structure of the battery cell 20, the processing and manufacturing method, etc., which greatly reduces the cost.

[0192] 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 of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A box body, wherein a first cavity is provided in the box body; A battery cell, contained in the first cavity; The contour piece is accommodated in the first cavity, and the contour piece comprises a contour piece body and an insulating layer, wherein the insulating layer is arranged on at least one side of the contour piece body.

2. The battery device according to claim 1, characterized in that: The material of the insulating layer includes any one of plastic, silicone, rubber and resin.

3. The battery device according to claim 1, characterized in that: The relative dielectric constant of the insulating layer is in the range of 1.8 to 3.

5.

4. The battery device according to claim 1, characterized in that: The relative dielectric constant of the insulating layer is in the range of 2.2 to 3.

0.

5. The battery device according to claim 1, characterized in that: The thickness of the insulating layer ranges from 0.1 mm to 1 mm.

6. The battery device according to claim 1, characterized in that: The thickness of the insulating layer ranges from 0.3 mm to 0.5 mm.

7. The battery device according to claim 1, characterized in that: The insulating layer comprises a film layer formed on the body of the contour member; or The insulating layer comprises a plate structure provided on the body of the contour member; or The insulating layer comprises an injection-molded overmolding structure formed on the body of the contoured member; or The insulating layer includes a filamentary winding structure formed on the contour body.

8. The battery device according to any one of claims 1 to 7, characterized in that: The contoured member body comprises two oppositely disposed end plates and at least two side plates, each of which is connected end to end in sequence; In the arrangement direction of the end plates, two ends of each of the side plates are respectively connected to the two end plates, and the insulating layer is arranged on the side plates and / or the end plates.

9. The battery device according to claim 8, characterized in that: One of the two end plates is connected to the inner wall of the box body; The insulating layer covers the other of the two end plates, and / or the insulating layer covers at least one of the side plates.

10. The battery device according to claim 9, characterized in that: One of the two end plates is connected to the inner wall of the box body through insulating glue.

11. The battery device according to claim 8, characterized in that: The insulating layer covers the two end plates and each of the side plates.

12. The battery device according to any one of claims 1 to 7, characterized in that: The material of the contoured part body includes metal.

13. The battery device according to any one of claims 1 to 7, characterized in that: A second cavity is provided in the main body of the profiling member, and a reinforcing structure connected to the main body of the profiling member is provided in the second cavity.

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

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