Battery devices and electrical equipment

Abstract

This application provides a battery device and an electrical appliance. The battery device includes a first battery cell assembly, an insulating layer, a circuit board, and a bracket. The first battery cell assembly includes a first battery cell and a second battery cell arranged adjacent to each other along a first direction. The first battery cell includes a first pressure relief mechanism and a first electrode terminal. The second battery cell includes a second electrode terminal. The first electrode terminal and the second electrode terminal are located on opposite sides of the first pressure relief mechanism along a second direction. The insulating layer is disposed on one side of the first battery cell assembly along a third direction. The circuit board is connected to the insulating layer and to the first battery cell assembly. The bracket is connected to the side of the insulating layer along a third direction away from the first battery cell assembly, and the bracket is engaged with the first electrode terminal and the second electrode terminal. Along the third direction, at least a portion of the first pressure relief mechanism is not obstructed by the bracket. The battery device can reduce the risk of the first battery cell exploding.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and electrical equipment. Background Technology

[0002] A battery device typically includes multiple battery cells and a sampling assembly for detecting the operating status of the battery cells. The sampling assembly is usually located on the side of the battery cell with a pressure relief mechanism. The pressure relief mechanism is used to open when the battery cell experiences thermal runaway, so as to release the high-temperature and high-pressure substances generated in the battery cell, thereby reducing the risk of the battery cell exploding. Utility Model Content

[0003] In related technologies, sampling components typically include a circuit board, an insulating component, and a support. The circuit board collects at least one of the current, temperature, and voltage information of the battery cell. The circuit board is attached to the insulating component, which is connected to it. The support is positioned on the side of the battery cell where the pressure relief mechanism is located. Specifically, the support is usually connected to the electrode terminals of different cells to complete the positioning. In this case, the support can block the pressure relief mechanism of the battery cell, making it difficult for high-temperature and high-pressure substances to be released efficiently, thus increasing the risk of thermal runaway and battery cell explosion.

[0004] In view of the above, a first aspect of the embodiments of this application provides a battery device, which includes a first battery cell assembly, an insulating layer, a circuit board, and a bracket. The first battery cell assembly includes a first battery cell and a second battery cell disposed adjacent to each other along a first direction; the first battery cell includes a first pressure relief mechanism and a first electrode terminal; the second battery cell includes a second electrode terminal; the first electrode terminal and the second electrode terminal are located on both sides of the first pressure relief mechanism along a second direction. The insulating layer is disposed on one side of the first battery cell assembly along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; the circuit board is connected to the insulating layer and connected to the first battery cell assembly, and the circuit board is used to collect information of the first battery cell assembly; the bracket is connected to the side of the insulating layer away from the first battery cell assembly along a third direction, and the bracket is engaged with the first electrode terminal and the second electrode terminal; along the third direction, at least a portion of the first pressure relief mechanism is not obstructed by the bracket.

[0005] In the battery device provided in the embodiments of this application, both the circuit board and the bracket are connected to the insulating layer so as to integrate them into a whole before connecting them to the first battery cell assembly, thereby improving the installation efficiency of the battery device. The insulating layer can be spaced between the circuit board and the first battery cell assembly, thereby forming an insulating protection between the circuit board and the first battery cell to reduce the risk of short circuit between the circuit board and the first battery cell assembly. The bracket is connected to the side of the insulating layer away from the first battery cell assembly along the third direction, and the bracket is connected to the first electrode terminal and the second electrode terminal to position the circuit board on the side of the first battery cell assembly along the third direction, so as to achieve accurate connection between the circuit board and the first battery cell assembly. On this basis, along the third direction, at least part of the first pressure relief mechanism is not blocked by the bracket, so that when the first battery cell experiences thermal runaway, the high temperature and high pressure substances generated in the first battery cell can be efficiently released through the first pressure relief mechanism, thereby reducing the risk of the first battery cell exploding.

[0006] In one or more embodiments of this application, a first electrode terminal includes a first top surface and a first side surface. The first top surface is parallel to the plane containing the first and second directions, and the first side surface extends along a third direction and is connected to the first top surface. A second electrode terminal includes a second top surface and a second side surface. The second top surface is parallel to the plane containing the first and second directions, and the second side surface extends along a third direction and is connected to the second top surface. A bracket is fitted and connected to the first side surface and the second side surface.

[0007] In this embodiment, the bracket is connected to the first side and the second side, which is beneficial to reduce the impact of the bracket arrangement on the dimensions of the battery device in the third direction compared to the bracket being stacked on at least one of the first top surface and the second top surface.

[0008] In one or more embodiments of this application, the bracket has a first through hole and a second through hole, a first electrode terminal is inserted through the first through hole, and the hole wall of the first through hole is connected to a first side surface; a second electrode terminal is inserted through the second through hole, and the hole wall of the second through hole is connected to a second side surface.

[0009] In this embodiment, the bracket is connected to the first electrode terminal and the second electrode terminal respectively by opening the first through hole and the second through hole. The structure is simple and helps to reduce manufacturing difficulty and improve connection efficiency.

[0010] In one or more embodiments of this application, the bracket includes a first connecting portion, a clearance portion, and a second connecting portion connected in sequence. Along a third direction, the first connecting portion and the second connecting portion are closer to the first battery cell assembly than the clearance portion. The first connecting portion is fitted to a first electrode terminal, and the second connecting portion is fitted to a second electrode terminal. Along a third direction, a circuit board is located between the clearance portion and the first battery cell assembly.

[0011] In this embodiment, by providing a clearance portion in the bracket, the circuit board can pass between the first battery cell assembly and the clearance portion, which helps to reduce the impact of the bracket's arrangement on the installation of the circuit board.

[0012] In one or more embodiments of this application, the clearance portion is a groove formed away from the recess of the first battery cell assembly. This results in a simple structure that is easy to manufacture.

[0013] In one or more embodiments of this application, the battery device further includes a second battery cell assembly, wherein the first battery cell assembly and the second battery cell assembly are disposed adjacent to each other along a second direction. The battery device further includes a first connector electrically connecting the first battery cell assembly and the second battery cell assembly, and the first connector is provided with a first positioning structure; the bracket is provided with a second positioning structure, and the first positioning structure cooperates with and connects to the second positioning structure.

[0014] In this embodiment, the first connector can be positioned by a bracket to reduce the risk of displacement or detachment during the connection of the first connector with the first battery cell assembly and the second battery cell assembly; furthermore, the positioning of both the insulating layer electrode and the first connector by the bracket is beneficial to improving the integration of the battery device.

[0015] In one or more embodiments of this application, a first battery cell is located on the outermost side of a first battery cell assembly along a first direction. The first battery cell includes a third electrode terminal, which is disposed opposite to a second electrode terminal along the first direction. A first connector includes a first portion, a second portion, and a third portion connected in sequence; the first portion is electrically connected to the third electrode terminal; a first positioning structure is disposed on the first portion; the third portion is electrically connected to the second battery cell assembly; and the second portion is disposed opposite to and spaced apart from the surface of the first battery cell facing away from the second battery cell along the first direction.

[0016] In this embodiment, the first battery cell is located on the outermost side of the first battery cell assembly along the first direction, so that the first portion extends to one side of the first battery cell assembly along the first direction; the second portion is opposite to the surface of the first battery cell facing away from the second battery cell along the first direction, so that the first battery cell can restrict the rotation of the first connector, further reducing the risk of displacement or detachment of the first connector during the connection between the first connector and the first and second battery cell assemblies; and the second portion is spaced apart from the first battery cell, which helps to reduce the risk of short circuit.

[0017] In one or more embodiments of this application, the battery device further includes a sampling sheet electrically connected to a third electrode terminal and a circuit board; along a third direction, a first portion covers at least a portion of the sampling sheet. The support includes a first connecting portion and a second connecting portion connected to each other; the first connecting portion is engaged with the first electrode terminal, and the second connecting portion is engaged with the second electrode terminal; the second connecting portion includes a mating portion and an extension portion; the mating portion is located on one side of the second battery cell along the third direction and is engaged with the second electrode terminal; the extension portion is connected to the mating portion and extends to one side of the first battery cell along the third direction; a second positioning structure is disposed on the extension portion, and the extension portion is separate from the sampling sheet.

[0018] In this embodiment, the second connecting portion of the bracket avoids the sampling piece, which helps to reduce the risk of deformation of the sampling piece caused by the pressure applied by the bracket to the sampling piece.

[0019] In one or more embodiments of this application, one of the first positioning structure and the second positioning structure is a positioning hole, and the other is a positioning post, with the positioning post passing through the positioning hole. This simplifies the structure and reduces manufacturing difficulty.

[0020] In one or more embodiments of this application, the battery device further includes a temperature measuring component, which is thermally connected to the first battery cell or the second battery cell and electrically connected to the circuit board; the bracket is provided with a third positioning structure, which is used to connect the temperature measuring component.

[0021] In this embodiment, positioning the temperature measuring component using a bracket is beneficial in two ways: firstly, it improves the installation accuracy of the temperature measuring component, thereby increasing the accuracy of the temperature measurement; secondly, it enhances the integration of the battery device, thereby improving assembly efficiency and reducing component costs.

[0022] In one or more embodiments of this application, the third positioning structure is a receiving groove, in which the temperature measuring component is received; along the third direction, the temperature measuring component is located between the bracket and the first battery cell assembly.

[0023] In this embodiment, the temperature measuring component is positioned by a receiving groove, which has a simple structure and is easy to manufacture; moreover, the receiving groove can protect the temperature measuring component and reduce the risk of damage to the temperature measuring component.

[0024] In one or more embodiments of this application, the bracket has a third through hole that connects to the receiving groove, and along the third direction, part of the temperature measuring component is exposed in the third through hole.

[0025] In this embodiment, part of the temperature sensing component is exposed in the third through hole, which helps to reduce the area of ​​the temperature sensing component covered by the bracket, thereby reducing the risk of the temperature sensing component being damaged by the pressure applied by the bracket.

[0026] In one or more embodiments of this application, the temperature measuring component includes a temperature-sensing resistor and a heat-conducting sheet, the temperature-sensing resistor being connected to the heat-conducting sheet; the bracket has a clearance hole that connects to a receiving groove, and the heat-conducting sheet is exposed in the clearance hole along a third direction.

[0027] In this embodiment, the heat-conducting sheet is exposed through the clearance hole. After the temperature sensing component is installed, a CCD camera can be used to detect the presence of the heat-conducting sheet through the clearance hole, thereby determining whether the temperature sensing component is installed in place.

[0028] In one or more embodiments of this application, the second battery cell includes a fourth electrode terminal, and the first electrode terminal and the fourth electrode terminal are disposed opposite to each other along a first direction; the battery device further includes a second connector, which electrically connects the first electrode terminal and the fourth electrode terminal; along a third direction, the second connector covers a portion of the support.

[0029] In this embodiment, the second connector is electrically connected to the first electrode terminal and the fourth electrode terminal and covers the bracket, thereby limiting the bracket and reducing the risk of bracket detachment.

[0030] In one or more embodiments of this application, the second battery cell includes a fourth electrode terminal and a second pressure relief mechanism, the second electrode terminal and the fourth electrode terminal being respectively disposed on both sides of the second pressure relief mechanism along a second direction; along a third direction, at least a portion of the second pressure relief mechanism is not obstructed by the bracket.

[0031] In this embodiment, at least part of the second pressure relief mechanism is not blocked by the bracket along the third direction, so that when the second battery cell experiences thermal runaway, the high-temperature and high-pressure substances generated inside the second battery cell can be efficiently released through the second pressure relief mechanism, thereby reducing the risk of the second battery cell exploding.

[0032] A second aspect of the embodiments of this application provides an electrical device that includes a battery device as described in any of the foregoing embodiments. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0034] Figure 1 These are schematic diagrams of the vehicle structure in some embodiments of this application;

[0035] Figure 2 These are exploded structural diagrams of the battery device in some embodiments of this application;

[0036] Figure 3 These are partial structural schematic diagrams of the battery device in some embodiments of this application;

[0037] Figure 4 yes Figure 3 A schematic diagram of the thermal decomposition of the structure in the diagram;

[0038] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0039] Figure 6 This is a partial exploded view of the battery device in some embodiments of this application;

[0040] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0041] Figure 8 This is a schematic diagram of the support structure from one viewpoint in some embodiments of this application;

[0042] Figure 9 This is a schematic diagram of the support structure from another perspective in some embodiments of this application.

[0043] The accompanying drawings are not drawn to scale.

[0044] Explanation of key component symbols:

[0045] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;

[0046] 10. Box; 11. First box; 12. Second box;

[0047] 20. First battery cell assembly; 21. Battery cell;

[0048] 201, First battery cell; 2011, First pressure relief mechanism; 2012, First electrode terminal; 20121, First top surface; 20122, First side surface; 2013, Third electrode terminal;

[0049] 202, Second battery cell; 2021, Second electrode terminal; 20211, Second top surface; 20212, Second side surface; 2022, Fourth electrode terminal; 2023, Second pressure relief mechanism;

[0050] 30. Insulation layer;

[0051] 40. Circuit board;

[0052] 50. Bracket; 51. First connecting part; 511. First through hole; 52. Clearance part; 521. Third positioning structure; 5211. Rib; 522. Third through hole; 523. Clearance hole; 53. Second connecting part; 531. Second through hole; 532. Second positioning structure; 533. Mating part; 534. Extension part;

[0053] 60. Second battery cell assembly;

[0054] 70. First connector; 71. First part; 711. First positioning structure; 72. Second part; 73. Third part;

[0055] 80. Temperature sensing components;

[0056] 90. Second connecting component;

[0057] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0060] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0063] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0064] Currently, judging from market trends, the application of various battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0065] A battery device typically includes multiple battery cells and a sampling assembly for detecting the operating status of the battery cells. The sampling assembly is usually located on the side of the battery cell with a pressure relief mechanism. The pressure relief mechanism is used to open when the battery cell experiences thermal runaway, so as to release the high-temperature and high-pressure substances generated in the battery cell, thereby reducing the risk of the battery cell exploding.

[0066] In related technologies, sampling components typically include a circuit board, an insulating component, and a support. The circuit board collects at least one of the current, temperature, and voltage information of the battery cell. The circuit board is attached to the insulating component, which is connected to it. The support is positioned on the side of the battery cell where the pressure relief mechanism is located. Specifically, the support is usually connected to the electrode terminals of different cells to complete the positioning. In this case, the support can block the pressure relief mechanism of the battery cell, making it difficult for high-temperature and high-pressure substances to be released efficiently, thus increasing the risk of thermal runaway and battery cell explosion.

[0067] In view of this, embodiments of this application provide a battery device and an electrical device including the battery device. The battery device includes a first battery cell assembly, an insulating layer, a circuit board, and a bracket. The first battery cell assembly includes a first battery cell and a second battery cell arranged adjacent to each other along a first direction; the first battery cell includes a first pressure relief mechanism and a first electrode terminal; the second battery cell includes a second electrode terminal; the first electrode terminal and the second electrode terminal are located on both sides of the first pressure relief mechanism along a second direction. The insulating layer is disposed on one side of the first battery cell assembly along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; the circuit board is connected to the insulating layer and connected to the first battery cell assembly, and the circuit board is used to collect information of the first battery cell assembly; the bracket is connected to the side of the insulating layer away from the first battery cell assembly along a third direction, and the bracket is connected to the first electrode terminal and the second electrode terminal; along the third direction, at least a portion of the first pressure relief mechanism is not obstructed by the bracket.

[0068] In the battery device provided in the embodiments of this application, both the circuit board and the bracket are connected to the insulating layer so as to integrate them into a whole before connecting them to the first battery cell assembly, thereby improving the installation efficiency of the battery device. The insulating layer can be spaced between the circuit board and the first battery cell assembly, thereby forming an insulating protection between the circuit board and the first battery cell to reduce the risk of short circuit between the circuit board and the first battery cell assembly. The bracket is connected to the side of the insulating layer away from the first battery cell assembly along the third direction, and the bracket is connected to the first electrode terminal and the second electrode terminal to position the circuit board on the side of the first battery cell assembly along the third direction, so as to achieve accurate connection between the circuit board and the first battery cell assembly. On this basis, along the third direction, at least part of the first pressure relief mechanism is not blocked by the bracket, so that when the first battery cell experiences thermal runaway, the high temperature and high pressure substances generated in the first battery cell can be efficiently released through the first pressure relief mechanism, thereby reducing the risk of the first battery cell exploding.

[0069] The battery devices and electrical equipment provided in the embodiments of this application are applicable to various battery-using devices, including but not limited to mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0070] The battery device and electrical equipment described in this application are not limited to the devices described above, but can also be applied to all devices that use batteries. However, for the sake of brevity, the following embodiments are all described using vehicles as electrical equipment.

[0071] The following description, in conjunction with the accompanying drawings, will explain and illustrate the battery device and electrical equipment proposed in this application.

[0072] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0073] In some embodiments, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 1000.

[0074] Please refer to Figure 2 , Figure 2 This is an exploded view of the battery device 100 in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell assembly, the battery cell assembly being housed within the housing 10. The battery cell assembly may include one or more battery cells 21, which provide voltage and capacity. Multiple battery cells 21 can be electrically connected in series, parallel, or mixed connections; here, a mixed connection can be understood as including both series and parallel connections.

[0075] In some embodiments, the housing 10 may include a first housing 11 and a second housing 12, which overlap each other, and together define a receiving space for accommodating the battery cell 20. The second housing 12 may be a hollow structure with one open end, and the first housing 11 may be a plate-like structure, with the first housing 11 covering the open side of the second housing 12 so that the first housing 11 and the second housing 12 together define the receiving space. Alternatively, both the first housing 11 and the second housing 12 may be hollow structures with one open side, with the open side of the first housing 11 covering the open side of the second housing 12. Of course, the housing 10 formed by the first housing 11 and the second housing 12 can be of various shapes, such as a cylinder or a cuboid.

[0076] In some embodiments, multiple battery cells 21 are fixed together to form a battery module. For example, multiple battery cells can be fixed together using structures such as cable ties or limiting plates. The battery device 100 may include one or more battery modules. In other embodiments, the battery cells 21 may also be directly fixed to the housing 10.

[0077] In some embodiments, the battery cell 21 can be a secondary battery, which refers to a type of battery that can be recharged to activate the active materials and continue to be used after the battery cell 21 has been discharged. Specifically, the battery cell 21 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., but this application embodiment is not limited to this.

[0078] Please refer to the reference. Figure 3 and Figure 4 , Figure 3 This is a partial structural diagram of the battery device 100 in some embodiments of this application. Figure 4 yes Figure 3An exploded view of the structure. In the battery device 100 provided in the embodiments of this application, the battery device 100 includes a first battery cell assembly 20, an insulating layer 30, a circuit board 40, and a bracket 50. The first battery cell assembly 20 includes first battery cells 201 and second battery cells 202 arranged adjacent to each other along a first direction X. The circuit board 40 is disposed on the insulating layer 30, and the insulating layer 30 is connected to the bracket 50 and positioned to one side of the first battery cell assembly 20 via the bracket 50. The aforementioned battery cell assembly can be understood as a collection of all battery cells in the battery device. The first battery cell assembly 20 can be understood as part or all of the battery cell assembly. For example, multiple battery cells 21 arranged along the first direction X can be considered as a row. When the battery cell assembly includes multiple rows of battery cells 21, the first battery cell assembly 20 can be any one of those rows. When the battery cell assembly includes only one row of battery cells 21, the first battery cell assembly 20 is equivalent to the battery cell assembly. The battery cells 21 in the first battery cell assembly 20 can be connected in series, parallel, or mixed via busbars (e.g., copper or aluminum busbars). Furthermore, the first battery cell 201 and the second battery cell 202 are distinguishing names for two adjacent battery cells 21 in the first battery cell assembly 20 for the convenience of explanation in this application. These two battery cells 21 can be any two adjacent battery cells 21 in the first battery cell assembly 20. The first battery cell 201 and the second battery cell 202 can have the same structure and performance, or they can have different structures and performance. Without affecting the implementation of the solution provided by the embodiments of this application, this application does not impose specific restrictions on this.

[0079] For details, please refer to the reference. Figure 4 and Figure 5 , Figure 5 yes Figure 4 Enlarged view at point A. The first battery cell 201 includes a first pressure relief mechanism 2011 and a first electrode terminal 2012; the second battery cell 202 includes a second electrode terminal 2021; the first electrode terminal 2012 and the second electrode terminal 2021 are located on both sides of the first pressure relief mechanism 2011 along the second direction Y. An insulating layer 30 is disposed on one side of the first battery cell assembly 20 along the third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other. A circuit board 40 is connected to the insulating layer 30 and to the first battery cell assembly 20, and the circuit board 40 is used to collect information from the first battery cell assembly 20; a bracket 50 is connected to the side of the insulating layer 30 along the third direction Z away from the first battery cell assembly 20, and the bracket 50 is engaged with the first electrode terminal 2012 and the second electrode terminal 2021; along the third direction Z, at least part of the first pressure relief mechanism 2011 is not obstructed by the bracket.

[0080] The first pressure relief mechanism 2011 can be understood as a mechanism disposed in the first battery cell 201 to perform pressure release function. Under normal operating conditions, the first pressure relief mechanism 2011 is in a closed state. When thermal runaway occurs in the first battery cell 201, a large amount of gas is generated inside the first battery cell 201, causing a pressure difference between the inside and outside of the first battery cell 201 that exceeds the threshold for maintaining the first pressure relief mechanism 2011 in a closed state. The first pressure relief mechanism 2011 then opens to release the pressure inside the first battery cell 201. Typically, during the release process, the gas carries some of the substances inside the first battery cell 201 out. As an example, the first pressure relief mechanism 2011 can be formed by partially thinning the outer shell of the first battery cell 201, or it can be a valve-like structure disposed within a through-hole in the outer shell of the first battery cell 201. At least part of the first pressure relief mechanism 2011 is not obstructed by the bracket 50. This can be understood as the first pressure relief mechanism 2011 being partially or completely unobstructed by the bracket 50. It should be noted that this does not mean that the first pressure relief mechanism 2011 is necessarily not obstructed by other structures of the battery device 100. For example, the first pressure relief mechanism 2011 may be obstructed by the circuit board 40, and the obstruction of the first pressure relief mechanism 2011 can also be reduced by opening holes on the circuit board 40.

[0081] The first electrode terminal 2012 can be understood as a component that performs the function of electrically connecting the first battery cell 201 to other devices (e.g., other battery cells 21); the second electrode terminal 2021 can be understood as a component that performs the function of electrically connecting the second battery cell 21 to other devices (e.g., other battery cells). The polarities of the first electrode terminal 2012 and the second electrode terminal 2021 can be the same or different.

[0082] The insulating layer 30 can be understood as a layered structure made of insulating material. As an example, the insulating layer 30 can be a plastic sheet manufactured by injection molding or vacuum forming, or a film element made of polymer material, which mainly provides insulation protection in the integrated circuit board and the support.

[0083] The circuit board 40 typically includes a substrate, circuitry disposed on the substrate, and electronic components electrically connected via the circuitry, enabling the circuit board to perform information acquisition and transmission functions. The electronic components connected to the circuit board 40 include, but are not limited to, at least one of a voltage sensor, a current sensor, and a temperature sensor, wherein the temperature sensor may be part of the temperature measuring component 80 described later. The circuitry on the circuit board 40 may be formed by etching copper foil attached to the substrate, which may be a phenolic paper substrate, an epoxy fiberglass cloth substrate, polyimide, etc. The circuit board 40 may be a printed circuit board or a flexible circuit board, but is not limited to these.

[0084] The bracket 50 is a component connected to the insulating layer 30 and serving a positioning function. It can be made of plastic to reduce weight and cost while reducing the risk of short circuits; or it can be made by covering the metal material with plastic to improve structural strength.

[0085] In this battery device 100, both the circuit board 40 and the bracket 50 are connected to the insulating layer 30 to facilitate integration into a single unit before connection with the first battery cell assembly 20, thereby improving the assembly efficiency of the battery device 100. The insulating layer 30 can be spaced between the circuit board 40 and the first battery cell assembly 20, thereby forming insulation between the circuit board 40 and the first battery cell 201 to reduce the risk of short circuit between the circuit board 40 and the first battery cell assembly 20. The bracket 50 is connected to the side of the insulating layer 30 facing away from the first battery cell assembly 20 along the third direction Z, and the bracket 50 is connected to the first battery cell assembly 20. The extreme terminal 2012 and the second electrode terminal 2021 are connected to each other, thereby positioning the circuit board 40 on the side of the first battery cell assembly 20 along the third direction Z, so as to achieve accurate connection between the circuit board 40 and the first battery cell assembly 20. On this basis, at least part of the first pressure relief mechanism 2011 is not blocked by the bracket 50 along the third direction Z, so that when the first battery cell 201 experiences thermal runaway, the high temperature and high pressure substances generated in the first battery cell 201 can be efficiently released through the first pressure relief mechanism 2011, thereby reducing the risk of the first battery cell 201 exploding.

[0086] Please refer to Figure 5 In some embodiments, the first electrode terminal 2012 includes a first top surface 20121 and a first side surface 20122. The first top surface 20121 is parallel to the plane containing the first direction X and the second direction Y. The first side surface 20122 extends along the third direction Z and is connected to the first top surface 20121. The second electrode terminal 2021 includes a second top surface 20211 and a second side surface 20212. The second top surface 20211 is parallel to the plane containing the first direction X and the second direction Y. The second side surface 20212 extends along the third direction Z and is connected to the second top surface 20211. The bracket 50 is fitted and connected to the first side surface 20122 and the second side surface 20212.

[0087] In this embodiment, the bracket 50 is connected to the first side surface 20122 and the second side surface 20212. Compared with the scheme where the bracket 50 is stacked on at least one of the first top surface 20121 and the second top surface 20211, it is beneficial to reduce the impact of the bracket 50 arrangement on the dimension of the battery device 100 along the third direction Z.

[0088] Please refer to the reference. Figure 4 , Figure 6 and Figure 8 , Figure 6This is a partial exploded view of the battery device 100 in some embodiments of this application. Figure 8 This is a schematic diagram of the support 50 from one perspective in some embodiments of this application. In some embodiments, the support 50 has a first through hole 511 and a second through hole 531; a first electrode terminal 2012 passes through the first through hole 511, and the wall of the first through hole 511 is connected to the first side surface 20122; a second electrode terminal 2021 passes through the second through hole 531, and the wall of the second through hole 531 is connected to the second side surface 20212.

[0089] In this embodiment, the bracket 50 is connected to the first electrode terminal 2012 and the second electrode terminal 2021 respectively by opening the first through hole 511 and the second through hole 531. The structure is simple and helps to reduce manufacturing difficulty and improve connection efficiency.

[0090] Please refer to the reference. Figure 4 and Figure 8 In some embodiments, the bracket 50 includes a first connecting portion 51, a clearance portion 52, and a second connecting portion 53 connected in sequence. Along the third direction Z, the first connecting portion 51 and the second connecting portion 53 are closer to the first battery cell assembly 20 than the clearance portion 52. The first connecting portion 51 is connected to the first electrode terminal 2012, and the second connecting portion 53 is connected to the second electrode terminal 2021. Along the third direction Z, the circuit board 40 is located between the clearance portion 52 and the first battery cell assembly 20.

[0091] In this embodiment, by providing a clearance portion 52 in the bracket 50, the circuit board 40 can pass between the first battery cell assembly 20 and the clearance portion 52, which helps to reduce the impact of the bracket 50 on the installation of the circuit board 40.

[0092] In some embodiments, the clearance portion 52 is a groove that is opposite to the recess formed by the first battery cell assembly 20. This results in a simple structure that is easy to manufacture.

[0093] In some embodiments, along the third direction Z, the first connecting portion 51, the clearance portion 52, and the second connecting portion 53 form a stepped structure with different heights relative to the first battery cell assembly 20. This helps to improve the thickness consistency of different parts of the bracket 50, thereby improving the overall structural strength of the bracket 50.

[0094] Please refer to the reference. Figure 4 , Figure 6 , Figure 7 and Figure 8 , Figure 7 yes Figure 6In the enlarged view at point B, in some embodiments, the battery device 100 further includes a second battery cell assembly 60, with the first battery cell assembly 20 and the second battery cell assembly 60 arranged adjacent to each other along a second direction. The battery device 100 also includes a first connector 70, which electrically connects the first battery cell assembly 20 and the second battery cell assembly 60, and the first connector 70 is provided with a first positioning structure 711; the bracket 50 is provided with a second positioning structure 532, and the first positioning structure 711 cooperates with and connects to the second positioning structure 532.

[0095] The second battery cell assembly 60 can be understood as another row of battery cells 21 that are distinct from the first battery cell assembly 20. The first connector 70 electrically connects the first battery cell assembly 20 and the second battery cell assembly 60, and can be used to connect the first battery cell assembly 20 and the second battery cell assembly 60 in series or parallel. The first connector 70 can be a metal component, such as a copper or aluminum component. Specifically, both ends of the first connector 70 can be electrically connected to the electrode terminals of a specific battery cell 21 in the first battery cell assembly 20 and the second battery cell assembly 60, and the connection method includes, but is not limited to, welding or conductive adhesive bonding.

[0096] In this embodiment, the first connector 70 can be positioned by the bracket 50 to reduce the risk of displacement or detachment during the connection of the first connector 70 with the first battery cell assembly 20 and the second battery cell assembly 60; and the fact that both the insulating layer electrode 30 and the first connector 70 are positioned by the bracket 50 is beneficial to improving the integration of the battery device 100.

[0097] In some embodiments, one of the first positioning structure 711 and the second positioning structure 532 is a positioning hole, and the other is a positioning post, with the positioning post passing through the positioning hole. This simplifies the structure and reduces manufacturing difficulty.

[0098] In some embodiments, the first battery cell 201 includes a third electrode terminal 2013, and the first connector 70 is electrically connected to the third electrode terminal 2013.

[0099] In this embodiment, the bracket 50 is connected to the first battery cell 201, and the first connector 70 is electrically connected to the first battery cell 201. This helps to reduce the distance between the bracket 50 and the first connector 70, thereby reducing the size of the bracket 50 and saving costs.

[0100] In some embodiments, the first battery cell 201 is located on the outermost side of the first battery cell assembly 20 along the first direction X; the first battery cell 201 includes a third electrode terminal 2013, which is disposed opposite to the second electrode terminal 2021 along the first direction X. The first connector 70 includes a first portion 71, a second portion 72, and a third portion 73 connected in sequence; the first portion 71 is electrically connected to the third electrode terminal 2013; a first positioning structure 711 is disposed on the first portion 71; the third portion 73 is electrically connected to the second battery cell assembly 60; the second portion 72 is disposed opposite to and spaced apart from the surface of the first battery cell 201 facing away from the second battery cell 202 along the first direction X.

[0101] In this embodiment, the first battery cell 201 is located on the outermost side of the first battery cell assembly 20 along the first direction X, so that the first portion 71 extends to one side of the first battery cell assembly 20 along the first direction X; the second portion 72 is opposite to the surface of the first battery cell 201 facing away from the second battery cell 202 along the first direction X, so that the first battery cell 201 can restrict the rotation of the first connector 70, further reducing the risk of displacement or detachment of the first connector 70 during the connection between the first connector 70 and the first battery cell assembly 20 and the second battery cell assembly 60; and the second portion 72 is spaced apart from the first battery cell 201, which helps to reduce the risk of short circuit.

[0102] Please refer to the reference. Figure 5 and Figure 8 In some embodiments, the battery device 100 further includes a sampling sheet (not shown), which is electrically connected to the third electrode terminal 2013 and the circuit board 40; along the third direction Z, a first portion 71 covers at least a portion of the sampling sheet. The support 50 includes a first connecting portion 51 and a second connecting portion 53 connected to each other. The first connecting portion 51 is engaged with the first electrode terminal 2012, and the second connecting portion 53 is engaged with the second electrode terminal 2021. The second connecting portion 53 includes a mating portion 533 and an extension portion 534. The mating portion 533 is located on one side of the second battery cell 202 along the third direction Z and is engaged with the second electrode terminal 2021; the extension portion 534 is connected to the mating portion 533 and extends to one side of the first battery cell 201 along the third direction Z. A second positioning structure 532 is disposed on the extension portion 534, and the extension portion 534 is separate from the sampling sheet.

[0103] The sampling chip can be understood as a component that participates in collecting information from the first battery cell 201, such as voltage or current information. The sampling chip can be made of copper or aluminum.

[0104] In this embodiment, the second connecting portion 53 of the bracket 50 avoids the sampling piece, which helps to reduce the risk of deformation of the sampling piece caused by the pressure applied by the bracket 50 to the sampling piece.

[0105] Please refer to the reference. Figure 7 and Figure 9 , Figure 9 This is a schematic diagram of the bracket from another perspective in some embodiments of this application. In some embodiments, the battery device 100 further includes a temperature measuring component 80, which is thermally connected to the first battery cell 201 or the second battery cell 202, and is electrically connected to the circuit board 40; the bracket 50 is provided with a third positioning structure 521, which is connected to the temperature measuring component.

[0106] In this embodiment, the temperature measuring component 80 is positioned by the bracket 50, which on the one hand helps to improve the installation accuracy of the temperature measuring component 80, thereby improving the accuracy of the temperature measurement by the temperature measuring component 80; on the other hand, it helps to improve the integration of the battery device 100, thereby improving assembly efficiency and reducing component costs.

[0107] In some embodiments, the third positioning structure 521 is a receiving groove, in which the temperature measuring component 80 is received; along the third direction Z, the temperature measuring component 80 is located between the bracket 50 and the first battery cell assembly 20. The receiving groove can be formed by recessing the surface of the bracket 50, or by a portion of the bracket 50 protruding from one surface and enclosing it. For example, the surface of the bracket 50 can be provided with multiple ribs 5211, which are sequentially connected end-to-end to enclose the receiving groove.

[0108] In this embodiment, the temperature measuring component 80 is positioned by a receiving groove, which has a simple structure and is easy to manufacture; moreover, the receiving groove can protect the temperature measuring component 80 and reduce the risk of damage to the temperature measuring component 80.

[0109] In some embodiments, the bracket 50 has a third through hole 522, which connects to the receiving groove. Along the third direction Z, a portion of the temperature measuring component 80 is exposed in the third through hole 522.

[0110] In this embodiment, part of the temperature sensing component 80 is exposed in the third through hole 522, which helps to reduce the area of ​​the temperature sensing component 80 covered by the bracket 50, thereby reducing the risk of the temperature sensing component 80 being damaged by the pressure applied by the bracket 50.

[0111] In some embodiments, the temperature sensing component 80 includes a temperature-sensing resistor and a heat-conducting plate. The temperature-sensing resistor is connected to the heat-conducting plate, which is used to contact the first battery cell 201 or the second battery cell 202 to transfer the temperature of the first battery cell 201 or the second battery cell 202 to the temperature-sensing resistor. The temperature-sensing resistor is used to convert the temperature signal of the first battery cell 201 or the second battery cell 202 into an electrical signal. The heat-conducting plate may be flexible to increase its contact area with the surface of the first battery cell or the second battery cell, thereby improving heat exchange efficiency. The temperature-sensing resistor may be a negative temperature coefficient thermistor.

[0112] In some embodiments, the temperature-sensitive resistor is exposed in the third via 522 to reduce the risk of damage to the temperature-sensitive resistor.

[0113] Please refer to Figure 8 In some embodiments, the bracket 50 has a clearance hole 523, which connects to the receiving groove. Along the third direction Z, the heat-conducting sheet is exposed in the clearance hole 523.

[0114] In this embodiment, the heat-conducting sheet is exposed through the clearance hole 523. After the temperature measuring component 80 is installed, a CCD camera can be used to detect the presence of the heat-conducting sheet through the clearance hole 523, thereby determining whether the temperature measuring component 80 is installed in place.

[0115] Please refer to Figure 4 In some embodiments, the second battery cell 202 includes a fourth electrode terminal 2022, and the first electrode terminal 2012 and the fourth electrode terminal 2022 are disposed opposite to each other along a first direction X; the battery device 100 also includes a second connector 90, which is electrically connected to the first electrode terminal 2012 and the fourth electrode terminal 2022; along a third direction Z, the second connector 90 covers a portion of the support 50.

[0116] In this embodiment, the second connector 90 is electrically connected to the first electrode terminal 2012 and the fourth electrode terminal 2022, and covers the bracket 50, thereby limiting the bracket 50 and reducing the risk of the bracket 50 detaching.

[0117] Please refer to the reference. Figure 4 and Figure 5 In some embodiments, the second battery cell 202 includes a fourth electrode terminal 2022 and a second pressure relief mechanism 2023. The second electrode terminal 2021 and the fourth electrode terminal 2022 are respectively disposed on both sides of the second pressure relief mechanism 2023 along the second direction Y; along the third direction Z, at least part of the second pressure relief mechanism 2023 is not blocked by the bracket 50.

[0118] In this embodiment, at least part of the second pressure relief mechanism 2023 is not blocked by the bracket 50 along the third direction Z, so that when the second battery cell 202 experiences thermal runaway, the high-temperature and high-pressure substances generated inside the second battery cell 202 can be efficiently released through the second pressure relief mechanism 2023, thereby reducing the risk of the second battery cell 202 exploding.

[0119] In some embodiments of the battery device 100 provided in this application, the bracket 50 includes a first connecting portion 51, a clearance portion 52, and a second connecting portion 53 arranged sequentially. The second connecting portion 53 includes a mating portion 533 and an extension portion 534. A first through hole 511 is disposed in the first connecting portion 52, and a second through hole 531 is disposed in the mating portion 533. A first electrode terminal 2012 passes through the first through hole 511, and a second electrode terminal 2021 passes through the second through hole 531. The bracket 50 also includes a positioning post, which serves as a second positioning structure 532. The positioning post is disposed in the extension portion 534 and is mated with the positioning hole of the first connector 70. The bracket 50 also includes a receiving groove, which serves as a third positioning structure 521 and is disposed in the clearance portion 52. The circuit board 40 of the battery device 100 passes through the clearance portion 52 and the first battery cell assembly 20. A temperature measuring component 80 is connected to the circuit board 40 and is received in the receiving groove.

[0120] In this embodiment, the bracket 50 integrates the functions of the positioning circuit board 40, the first connector 70, and the temperature measuring component 80, which helps to improve the integration of the battery device 100 and reduce component costs while improving assembly efficiency.

[0121] Embodiments of this application also provide an electrical device that includes the battery device 100 described in any of the foregoing embodiments. Since this electrical device includes the aforementioned battery device 100, it also possesses the advantages of the battery device 100, which will not be elaborated upon here.

[0122] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The first battery cell assembly includes a first battery cell and a second battery cell arranged adjacent to each other along a first direction. The first battery cell includes a first pressure relief mechanism and a first electrode terminal; the second battery cell includes a second electrode terminal; the first electrode terminal and the second electrode terminal are located on both sides of the first pressure relief mechanism along a second direction; An insulating layer is disposed on one side of the first battery cell assembly along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; A circuit board is connected to the insulating layer and to the first battery cell assembly; the circuit board is used to collect information from the first battery cell assembly. A bracket is connected to the side of the insulating layer opposite to the first battery cell assembly along the third direction, and the bracket is connected in cooperation with the first electrode terminal and the second electrode terminal; Along the third direction, at least a portion of the first pressure relief mechanism is not obstructed by the bracket.

2. The battery device as claimed in claim 1, characterized in that, The first electrode terminal includes a first top surface and a first side surface. The first top surface is parallel to the plane containing the first direction and the second direction, and the first side surface extends along the third direction and is connected to the first top surface. The second electrode terminal includes a second top surface and a second side surface. The second top surface is parallel to the plane containing the first direction and the second direction, and the second side surface extends along the third direction and is connected to the second top surface. The bracket is connected to the first side and the second side.

3. The battery device as claimed in claim 2, characterized in that, The bracket has a first through hole and a second through hole; The first electrode terminal is inserted through the first through hole, and the wall of the first through hole is connected to the first side surface; the second electrode terminal is inserted through the second through hole, and the wall of the second through hole is connected to the second side surface.

4. The battery device according to any one of claims 1-3, characterized in that, The bracket includes a first connecting part, a clearance part, and a second connecting part connected in sequence. Along the third direction, the first connecting part and the second connecting part are closer to the first battery cell assembly than the clearance part. The first connecting part is connected to the first electrode terminal, and the second connecting part is connected to the second electrode terminal. Along the third direction, the circuit board is located between the clearance portion and the first battery cell assembly.

5. The battery device as claimed in claim 4, characterized in that, The avoidance part is a groove formed away from the recess of the first battery cell assembly.

6. The battery device according to any one of claims 1-3, characterized in that, The battery device further includes a second battery cell assembly, wherein the first battery cell assembly and the second battery cell assembly are arranged adjacent to each other along the second direction; The battery device further includes a first connector, which is electrically connected to the first battery cell assembly and the second battery cell assembly, and the first connector is provided with a first positioning structure. The bracket is provided with a second positioning structure, and the first positioning structure is connected to the second positioning structure.

7. The battery device as claimed in claim 6, characterized in that, The first battery cell is located on the outermost side of the first battery cell assembly along the first direction; the first battery cell includes a third electrode terminal, which is disposed opposite to the second electrode terminal along the first direction. The first connector comprises a first part, a second part, and a third part connected in sequence; The first part is electrically connected to the third electrode terminal; The first positioning structure is located in the first part; The third part is electrically connected to the second battery cell assembly; The second part is positioned opposite to and spaced apart from the surface of the first battery cell facing away from the second battery cell along the first direction.

8. The battery device as claimed in claim 7, characterized in that, The battery device further includes a sampling plate electrically connected to the third electrode terminal and the circuit board; along the third direction, the first portion covers at least a portion of the sampling plate; The bracket includes a first connecting part and a second connecting part connected to each other. The first connecting part is connected to the first electrode terminal, and the second connecting part is connected to the second electrode terminal. The second connection portion includes a mating portion and an extension portion. The mating portion is located on one side of the second battery cell along the third direction and is mated to connect the second electrode terminal. The extension portion is connected to the mating portion and extends to one side of the first battery cell along the third direction. The second positioning structure is disposed on the extension portion, and the extension portion is separate from the sampling sheet.

9. The battery device as claimed in claim 6, characterized in that, One of the first positioning structure and the second positioning structure is a positioning hole, and the other is a positioning post, with the positioning post passing through the positioning hole.

10. The battery device according to any one of claims 1-3, characterized in that, The battery device further includes a temperature measuring component, which is thermally connected to the first battery cell or the second battery cell, and is electrically connected to the circuit board. The bracket is provided with a third positioning structure, which is used to connect the temperature measuring component.

11. The battery device as claimed in claim 10, characterized in that, The third positioning structure is a receiving groove, and the temperature measuring component is received in the receiving groove; Along the third direction, the temperature measuring component is located between the bracket and the first battery cell assembly.

12. The battery device as claimed in claim 11, characterized in that, The bracket has a third through hole, which connects to the receiving groove. Along the third direction, part of the temperature measuring component is exposed in the third through hole.

13. The battery device as claimed in claim 11, characterized in that, The temperature measuring component includes a temperature-sensing resistor and a heat-conducting sheet, the temperature-sensing resistor being connected to the heat-conducting sheet; the bracket has an clearance hole, the clearance hole being connected to the receiving groove, and along the third direction, the heat-conducting sheet being exposed in the clearance hole.

14. The battery device according to any one of claims 1-3, characterized in that, The second battery cell includes a fourth electrode terminal, and the first electrode terminal and the fourth electrode terminal are disposed opposite to each other along the first direction; The battery device further includes a second connector, which is electrically connected to the first electrode terminal and the fourth electrode terminal; Along the third direction, the second connector covers a portion of the bracket.

15. The battery device according to any one of claims 1-3, characterized in that, The second battery cell includes a fourth electrode terminal and a second pressure relief mechanism, wherein the second electrode terminal and the fourth electrode terminal are respectively disposed on both sides of the second pressure relief mechanism along the second direction; Along the third direction, at least a portion of the second pressure relief mechanism is not obstructed by the bracket.

16. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-15.

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