Battery device and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device and electric equipment.The battery device comprises a box body, the box body is provided with a containing space, the box body comprises a box body frame and a limiting beam conductively connected with the box body frame, the containing space is defined by the box body frame, and the limiting beam is arranged in the containing space; the battery monomer assembly is accommodated in the accommodating space and is propped against the limiting beam; and the electric device is arranged in the accommodating space and comprises a shell, the shell is a conductive piece and is provided with an extension part with one end conductively connected with the shell, and the other end of the extension part is conductively connected with the limiting beam. According to the technical scheme, the grounding convenience and reliability of the electric device can be improved, and the use performance of the electric device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] The part provided in this section is merely background information of the present disclosure, which does not necessarily relate to the prior art.

[0003] At present, an electric device needing grounding is usually arranged in the battery device. The electric device is usually connected to the multiple grounding positions of the electric device and the box through multiple wire harnesses to realize grounding. However, due to the long connection path of the wire harnesses and the limited cross-sectional size of a single wire harness, and the different lengths of the wire harnesses corresponding to different grounding positions, it is not easy to install and connect, the connection reliability is poor, and the use performance of the electric device is affected. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a battery device to improve the convenience of grounding of the electric device and improve the use performance of the electric device. The purpose is achieved by the following technical solutions:

[0005] In a first aspect, the present application provides a battery device, comprising: a box having a containing space; a battery monomer assembly accommodated in the containing space, the box comprising a box frame and a limiting beam in electrically conductive connection with the box frame, the box frame surrounding the containing space, and the limiting beam being arranged in the containing space; an electric device arranged in the containing space and abutting against the limiting beam; the electric device comprising a shell, the shell being an electrically conductive part, and the shell being provided with an extension part in electrically conductive connection with one end of the shell, and the other end of the extension part being in electrically conductive connection with the limiting beam.

[0006] According to the battery device provided by the present application, the extension part in electrically conductive connection with the shell is arranged on the shell of the electric device, and the electric device is installed in the box at a position close to the limiting beam to shorten the grounding path, and then the other end of the extension part is in electrically conductive connection with the limiting beam of the box, thereby realizing the grounding of the electric device, canceling the grounding mode of connecting multiple wire harnesses, reducing the number of unnecessary grounding points, and the extension part can be used as an anti-failure part to reduce the risk of grounding failure and reinstallation of the electric device due to installation in reverse, improve the installation efficiency and grounding efficiency of the electric device, improve the convenience of grounding, and help to improve the stability of the placement of the battery monomer assembly, and the cross-sectional area of the extension part can be reasonably set according to the demand to reduce the impedance and improve the use performance of the electric device.

[0007] In addition, the battery device provided by the present application can also have the following additional technical features:

[0008] In some embodiments of this application, the battery device further includes a high-voltage control component electrically connected to the battery cell assembly. The high-voltage control component has a housing that is insulated from the enclosure, and the electrical components are connected to the housing.

[0009] The high-voltage control component is electrically connected to the battery cell assembly, playing a role in power distribution and safety protection of the battery cell assembly. The electrical components are connected to the housing of the high-voltage control component. Since the housing is insulated from the enclosure, the risk of short circuit due to conductivity between the high-voltage control component and the enclosure is reduced, thus improving the stability of the high-voltage control component and electrical components.

[0010] In some embodiments of this application, the outer shell includes a base plate and a cover, the cover being disposed over the base plate, and the base plate or the cover being connected to the extension; wherein, the base plate is located between the cover and the box body and is fixedly connected to the box body.

[0011] In the above technical solution, the structure of the base plate is relatively regular. Therefore, by fixing the base plate to the housing of the high-voltage control component, it is not only easy to install, but also helps to improve the stability of the electrical components installation.

[0012] In some embodiments of this application, the battery device further includes a fastener, the base plate is provided with at least one lug, the lug is provided with a first connecting hole, the housing is provided with a second connecting hole, the first connecting hole and the second connecting hole are correspondingly connected, and the fastener passes through the first connecting hole and the second connecting hole to fix the base plate and the housing.

[0013] In the above technical solution, by setting at least one lug on the base plate and setting a first connecting hole on the lug, and setting a second connecting hole on the housing of the high-voltage control component, when the electrical components are installed with the high-voltage control component, the electrical components can be fixed to the outside of the housing of the high-voltage control component by using fasteners such as bolts to pass through the first connecting hole and the second connecting hole in sequence. The structure and principle are relatively simple and easy to implement.

[0014] In some embodiments of this application, the connection between the extension and the housing includes integral connection, welding connection, and bolt connection;

[0015] And / or, the extension is welded to or bolted to the housing.

[0016] In the above technical solution, one end of the extension can be integrally connected to the outer shell, or welded or bolted, and the other end of the extension can be welded or bolted to the housing, thereby helping to improve the stability of the grounding achieved by connecting the outer shell to the housing through the extension provided thereon.

[0017] In some embodiments of this application, the extension is provided with at least one bent section.

[0018] In the above technical solution, since the electrical components and the limiting beam are installed at different heights inside the box, at least one bending section is provided on the extension to accommodate the height difference between the electrical components and the limiting beam, thereby facilitating the connection between the extension and the limiting beam.

[0019] In some embodiments of this application, the thickness of the extension is not less than 1 mm.

[0020] In the above technical solution, by setting the thickness of the extension to not less than 1mm, the cross-sectional area of ​​the extension is too small due to its thinness, which leads to a large grounding impedance and affects the filtering performance of the electrical device. It also reduces the risk of increased processing difficulty and connection difficulty due to the excessive thickness of the extension.

[0021] In some embodiments of this application, the extension includes a first sub-extension and a second sub-extension, the first sub-extension and the second sub-extension are stacked and electrically connected, and at least one of the first sub-extension and the second sub-extension is electrically connected to the outer shell and the housing.

[0022] In the above technical solution, by stacking and electrically connecting the first sub-extension and the second sub-extension of the extension, the overall thickness of the extension can be increased, thereby increasing the cross-sectional area of ​​the extension, which can reduce the grounding impedance of the electrical device and improve the filtering performance of the electrical device.

[0023] In some embodiments of this application, the electrical device is a filter or a battery management system.

[0024] Secondly, this application provides an electrical device including a battery device as described in any one of the embodiments of the first aspect, the battery device being used to provide electrical energy or store electrical energy.

[0025] The electrical equipment provided according to this application includes the battery device described in any one of the first aspect embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a vehicle provided according to some embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the structure of a battery device provided according to some embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the structure of a battery cell according to some embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the assembly structure of an electrical device according to some embodiments of this application;

[0032] Figure 5 This is a schematic diagram of an assembly structure of electrical components and extensions according to some embodiments of this application;

[0033] Figure 6 This is a schematic diagram of another assembly structure of electrical components and extensions provided according to some embodiments of this application;

[0034] Figure 7 This is a schematic diagram of another assembly structure of electrical components and extensions provided according to some embodiments of this application;

[0035] Figure 8 This is a schematic diagram of the assembly structure of another electrical device according to some embodiments of this application;

[0036] Figure 9 for Figure 8 A schematic diagram of the structure of the middle extension.

[0037] The attached figures are labeled as follows:

[0038] 1000, vehicles;

[0039] 100. Battery assembly; 200. Controller; 300. Motor;

[0040] 10. Box body; 11. First box body; 12. Second box body; 121. Box frame; 122. Limiting beam;

[0041] 20. Battery cell assembly; 21. Battery cell; 211. End cap; 212. Housing; 213. Electrode assembly; 214. Electrode terminal;

[0042] 30. Electrical components; 31. Base plate; 311. Lug; 312. First connecting hole; 32. Cover;

[0043] 301, Extension; 302, First Sub-Extension; 303, Second Sub-Extension; 3011, First Connecting Section; 3012, Bending Section; 3013, Second Connecting Section; 3014, Through Hole;

[0044] 40. High-voltage control components. Detailed Implementation

[0045] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0048] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the description of the embodiments of this application, the term "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).

[0051] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0053] Currently, judging from market trends, the application of 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 aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0054] Battery devices typically contain grounded components such as filters and battery management systems. When space is limited within the battery device, preventing direct mounting of metal-cased components to the enclosure or other metal mounting brackets, alternative solutions must be employed to ensure proper grounding. Common grounding methods involve connecting multiple wire harnesses to multiple grounding points on the components and to the enclosure. However, this process is cumbersome due to the long wiring paths, limited cross-sectional dimensions of individual wire harnesses, and varying harness lengths at different grounding points. This not only makes installation difficult but also negatively impacts the performance of the components.

[0055] To address the problem of inconvenient installation and impaired performance of electrical components caused by grounding the sampling harness and enclosure, this application designs a battery device and an electrical appliance including the battery device. The battery device and electrical appliance of this application improve the convenience and reliability of grounding electrical components. Simultaneously, they facilitate the installation of electrical components and reduce their grounding impedance.

[0056] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0057] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0058] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0059] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0060] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0061] As an example, the enclosure may include a top cover, an enclosure frame, a limiting beam, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0062] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0063] In some embodiments, the battery device can also be used in an energy storage device, which includes a cabinet with a door on at least one side, and the battery device is housed within the cabinet. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0064] In some embodiments, the energy storage device includes one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery modules connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0065] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, energy storage devices can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage devices provided in this application can be used in any power system that requires energy storage.

[0066] The technical solutions described in this application are applicable to various electrical devices and energy storage equipment that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, spacecraft and energy storage containers, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0067] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided according to some embodiments of this application. For example... Figure 1 As shown, 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 vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, the battery device 100 can serve as the operating power source for vehicle 1000. 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 vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of this application, 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 power for the vehicle 1000.

[0069] Please see Figure 2 , Figure 2 This is an exploded structural diagram of a battery device 100 provided according to some embodiments of this application. To meet different power demands, the battery device 100 may include multiple battery cells 21, where each battery cell 21 is the smallest unit constituting the battery device 100. Multiple battery cells 21 may be connected in series and / or in parallel via electrode terminals 214 to form a battery cell assembly 20. Here, "mixed connection" refers to a combination of series and parallel connections.

[0070] Please see Figure 2The battery device 100 may include multiple battery cell assemblies 20 and a housing 10, with the multiple battery cell assemblies 20 housed inside the housing 10. The housing 10 is used to house the battery cells 21 or battery cell assemblies 20 to reduce the impact of liquids or other foreign matter on the charging or discharging of the battery cells 21. The housing 10 may be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The material of the housing 10 may be an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0071] In some embodiments, the housing 10 may include a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 covering each other, the first housing 11 and the second housing 12 together defining a space for accommodating the battery cell 21. The second housing 12 may be a hollow structure with one end open, and the first housing 11 may be a plate-like structure, 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 a space for accommodating the battery cell 21; the first housing 11 and the second housing 12 may also be hollow structures with one side open, the open side of the first housing 11 covering the open side of the second housing 12.

[0072] The battery cell assembly 20 may include multiple battery cells 21. These battery cells 21 may be connected in series, parallel, or a combination thereof to form the battery cell assembly 20. The multiple battery cell assemblies 20 may then be connected in series, parallel, or a combination thereof to form the battery device 100. The battery cell 21 may be cylindrical, flat, cuboid, or other shapes, and this application does not limit this. Battery cells 21 are generally classified into three types according to their packaging method: cylindrical battery cells, cuboid battery cells, and pouch battery cells, and this application does not limit this either. However, for the sake of brevity, the following embodiments will use a cuboid lithium-ion battery cell 21 as an example for explanation.

[0073] Figure 3 This is an exploded structural diagram of a battery cell 21 provided according to some embodiments of this application. The battery cell 21 refers to the smallest unit constituting the battery device 100. As shown, the battery cell 21 includes an end cap 211, a housing 212, and an electrode assembly 213.

[0074] End cap 211 refers to a component that covers the opening of housing 212 to isolate the internal environment of battery cell 21 from the external environment. The shape of end cap 211 can be adapted to the shape of housing 212 to fit it. Optionally, end cap 211 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 211 is not easily deformed under pressure and impact, giving battery cell 21 higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on end cap 211. Electrode terminals 214 can be used for electrical connection with electrode assembly 213 to output or input electrical energy to battery cell 21. In some embodiments, end cap 211 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 21 reaches a threshold. In some embodiments, an insulating member can also be provided on the inner side of end cap 211, which can be used to isolate the electrical connection components inside housing 212 from end cap 211 to reduce the risk of short circuit. For example, the insulating element can be made of plastic, rubber, etc.

[0075] The housing 212 is a component used to cooperate with the end cap 211 to form the internal environment of the battery cell 21. This internal environment can accommodate the electrode assembly 213, electrolyte (not shown in the figure), and other components. The housing 212 and the end cap 211 can be independent components. An opening can be provided on the housing 212, and the end cap 211 can be used to close the opening to form the internal environment of the battery cell 21. Alternatively, the end cap 211 and the housing 212 can be integrated. Specifically, the end cap 211 and the housing 212 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 212, the end cap 211 closes the housing 212. The housing 212 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 212 can be determined according to the specific shape and size of the electrode assembly 213. The housing 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0076] Electrode assembly 213 is the component in the battery cell 21 where the electrochemical reaction occurs. The casing 212 may contain one or more electrode assemblies 213. Electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 213, while the portions of the positive and negative electrode sheets without active material each constitute a tab (not shown in the figure). The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 214 to form a current loop.

[0077] Please see Figure 4 and Figure 8 , Figure 4 This is a schematic diagram of the assembly structure of an electrical device 30 according to some embodiments of this application; Figure 8 This is a schematic diagram of the assembly structure of another electrical device 30 provided according to some embodiments of this application. Embodiments of this application provide a battery device 100, including a housing 10, an electrical device 30, and a battery cell assembly 20. The housing 10 has a receiving space and includes a housing frame 121 and a limiting beam 122 electrically connected to the housing frame 121. The housing frame 121 encloses the receiving space, and the limiting beam 122 is disposed within the receiving space. The electrical device 30 and the battery cell assembly 20 are housed within the receiving space, with the battery cell assemblies 20 abutting against each other and electrically connected. The electrical device 30 includes a housing, which is a conductive component, and has an extension 301 with one end electrically connected to it. The other end of the extension 301 is electrically connected to the housing 10.

[0078] In some embodiments, the electrical device 30 includes a filter or a battery management system. Both the filter and the battery management system require grounding and have a housing. The filter has an input terminal and an output terminal. The input terminal is used for electrical connection to the battery management system, which is electrically connected to the battery cells 21 in the battery cell assembly 20 via a sampling component. The output terminal is used for electrical connection to the electrical device. The filter incorporates a filtering component composed of electronic components such as capacitors, inductors, and resistors. The filter can separate useful signals from complex electrical signals and suppress or remove useless interference signals, ensuring that the target circuit or device can stably receive and process the required signals.

[0079] In some embodiments, the battery cell assembly 20 is typically formed by arranging a plurality of battery cells 21; as an example, the battery cell assembly 20 can be a battery module, which is formed by arranging and fixing a plurality of battery cells 21 into an independent module. As an example, a battery module can be formed by binding a plurality of battery cells 21 together with cable ties.

[0080] For example, the housing of the electrical device 30 is a metal housing.

[0081] As an example, the extension 301 can be a metallic conductive element or a non-metallic conductive element.

[0082] Understandably, after the outer casing of the electrical device 30 is grounded to the housing 10 through the extension 301, the potentials of the electrical device 30 and the housing 10 can be made equal.

[0083] Understandably, both the box frame 121 and the limiting beam 122 are profile structural components, which are electrically conductive.

[0084] Specifically, the interior of the limiting beam 122 is partially hollow to absorb the expansion stress generated by the battery cell 21 during charging.

[0085] By providing an extension 301 conductively connected to the outer casing of the electrical component 30, and installing the electrical component 30 inside the housing 10 near the housing 10, the grounding path is shortened. Then, the other end of the extension 301 extends to conductively connect with the housing 10, thereby achieving grounding of the electrical component 30. This eliminates the need for multiple wire harnesses for grounding, reducing the number of unnecessary grounding points. Furthermore, the extension 301 acts as a foolproof design, reducing the risk of grounding failure and reinstallation due to incorrect installation. This improves the installation and grounding efficiency of the electrical component 30, and enhances the convenience of grounding. It also solves the problem when space constraints in the battery device 100 prevent the electrical component 30 from being installed on the housing 10 or other metal supports, requiring installation on other non-metallic components. In addition, the cross-sectional area of ​​the extension 301 can be appropriately adjusted to reduce impedance and improve the performance of the electrical component 30.

[0086] Please see Figure 4 and Figure 8 According to some embodiments of this application, the housing 10 includes a housing frame 121 and a limiting beam 122 electrically connected to the housing frame 121. The housing frame 121 encloses an accommodating space, and the limiting beam 122 is disposed within the accommodating space and abuts against the battery cell assembly 20. The electrical device 30 is electrically connected to the limiting beam 122 through an extension 301.

[0087] According to some embodiments of this application, the battery device 100 further includes a high-voltage control component 40, which is electrically connected to the battery cell assembly 20. The high-voltage control component 40 has a housing, which is insulated from the casing, and an electrical component 30 is connected to the housing.

[0088] As an example, the high-voltage control assembly 40 performs voltage conversion and protection functions, thereby improving the performance of the battery device 100. The high-voltage control assembly 40 includes a housing and an electronic control component disposed within the housing. The electronic control component may include a relay and a fuse electrically connected to the relay. The relay is electrically connected to the battery cell assembly via the fuse. The housing may be a non-metallic component such as plastic.

[0089] For example, the limiting beam 122 divides the accommodating space into a first accommodating cavity and a second accommodating cavity, with the battery cell assembly 20 housed in the first accommodating cavity and the high-voltage control assembly 40 housed in the second accommodating cavity.

[0090] Electrical component 30 is connected to the housing of high voltage control component 40. Since the housing is insulated from the enclosure 10, the risk of short circuit due to conductivity between high voltage control component 40 and enclosure 10 is reduced, thereby improving the stability of high voltage control component 40 and electrical component 30 in use.

[0091] Please see Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of an assembly structure of an electrical component 30 and an extension 301 according to some embodiments of this application; Figure 6 This is a schematic diagram of another assembly structure of the electrical component 30 and the extension 301 provided according to some embodiments of this application. According to some embodiments of this application, the housing includes a base plate 31 and a cover 32, the cover 32 covering the base plate 31, and the extension 301 is connected to the base plate 31 or the cover 32; wherein, the base plate 31 is located between the cover 32 and the box body, and is fixedly connected to the box body.

[0092] As an example, one end of the extension 301 may be connected to the base plate 31 or the cover 32.

[0093] As an example, the base plate 31 has a flat plate structure, and the cover 32 has an opening on the side facing the base plate 31. The cover 32 covers the base plate 31 and defines a mounting cavity between the cover 32 and the base plate 31. When the electrical component 30 is a filter, the filter assembly is located within the mounting cavity. When the electrical component 30 is a battery management system, the battery management unit is located within the mounting cavity.

[0094] The base plate 31 has a relatively regular structure. Therefore, by fixing the base plate 31 to the housing of the high voltage control assembly 40, it is not only easy to install, but also helps to improve the stability of the electrical components 30 installation.

[0095] Please see Figure 5 and Figure 6According to some embodiments of this application, the battery device 100 further includes fasteners. The base plate 31 is provided with at least one lug 311, the lug 311 is provided with a first connecting hole 312, the box body is provided with a second connecting hole, the first connecting hole 312 and the second connecting hole are correspondingly connected, and the fasteners are inserted through the first connecting hole 312 and the second connecting hole to fix the base plate 31 and the box body.

[0096] As an example, the base plate 31 is provided with a plurality of lugs 311 at intervals along its circumferential edge. The lugs 311 protrude from the cover 32 along the plane of the base plate 31, and each lug 311 is provided with a first connecting hole 312.

[0097] By providing at least one lug 311 on the base plate 31 and a first connecting hole 312 on the lug 311, and a second connecting hole on the housing of the high-voltage control assembly 40, when the electrical component 30 is installed with the high-voltage control assembly 40, fasteners such as bolts can be passed through the first connecting hole 312 and the second connecting hole in sequence to fix the electrical component 30 to the outside of the housing of the high-voltage control assembly 40. The structure and principle are relatively simple and easy to implement.

[0098] According to some embodiments of this application, the connection between the extension 301 and the housing includes integral connection, welding connection and bolt connection; the extension 301 is welded or bolted to the housing 10.

[0099] One end of the extension 301 can be integrally connected to the outer casing, or welded or bolted, and the other end of the extension 301 can be welded or bolted to the housing 10, thereby helping to improve the stability of grounding by connecting the outer casing to the housing 10 through the extension 301 provided thereon.

[0100] Please see Figure 5 , Figure 6 and Figure 9 , Figure 9 for Figure 8 A schematic diagram of the structure of the extension 301. According to some embodiments of this application, the extension 301 is provided with at least one bent section 3012.

[0101] As an example, the extension 301 also includes a first connecting segment 3011 and a second connecting segment 3013 located at its end. Both the first connecting segment 3011 and the second connecting segment 3013 are provided with through holes 3014 for fasteners to pass through, so as to fix the two ends of the extension 301 to the outer shell and the housing 10 respectively.

[0102] Since the electrical components 30 and the limiting beam 122 are installed at different heights within the housing 10, at least one bent section 3012 is provided on the extension 301 to accommodate the height difference between the electrical components 30 and the limiting beam 122 and to avoid other equipment components within the housing 10, thereby facilitating the connection between the extension 301 and the limiting beam 122.

[0103] According to some embodiments of this application, the thickness of the extension 301 is not less than 1 mm.

[0104] By setting the thickness of the extension 301 to not less than 1 mm, the cross-sectional area of ​​the extension 301 is too small due to its thinness, which leads to a large grounding impedance and affects the filtering performance of the electrical device 30. It also reduces the risk of increased processing difficulty and connection difficulty due to the excessive thickness of the extension 301.

[0105] Please see Figure 7 , Figure 7 This is a schematic diagram of another assembly structure of an electrical component and an extension provided according to some embodiments of this application. According to some embodiments of this application, the extension 301 includes a first sub-extension 302 and a second sub-extension 303, and the first sub-extension 302 and the second sub-extension 303 are stacked and electrically connected, and at least one of the first sub-extension 302 and the second sub-extension 303 is electrically connected to the outer casing and the housing 10.

[0106] As an example, the first sub-extension 302 is connected to one side of the second sub-extension 303, and is folded over the second sub-extension 303 from the side connected to the second sub-extension 303, thus overlapping the second sub-extension 303. The extension length of the second sub-extension 303 can be reasonably set according to actual needs.

[0107] By stacking and electrically connecting the first sub-extension 302 and the second sub-extension 303, the overall thickness of the extension 301 can be increased, thereby increasing the cross-sectional area of ​​the extension 301, which in turn reduces the grounding impedance of the electrical device 30 and improves the filtering performance of the electrical device 30.

[0108] According to some embodiments of this application, see Figures 1 to 3This application provides a battery device 100, including a housing 10, a high-voltage control assembly 40, an electrical component 30, and a battery cell assembly. The housing 10 includes a housing frame 121 and a limiting beam 122. The housing frame 121 encloses a receiving space, and the limiting beam 122 is disposed within the receiving space, dividing the receiving space into a first receiving cavity and a second receiving cavity. The battery cell assembly 21 is housed in the first receiving cavity and abuts against the limiting beam 122. The high-voltage control assembly 40 is disposed in the second receiving cavity. The high-voltage control assembly 40 has a housing, which is insulated from the housing. The electrical component 30 is connected to the housing and includes a shell. The shell includes a base plate 31 and a cover 32 covering the base plate 31. The base plate 31 is fixedly connected to the housing of the high-voltage control assembly 40. An extension is integrally connected to the side of the base plate 31 facing the limiting beam 122. The end of the extension away from the electrical component 30 is electrically connected to the limiting beam 122 or a metal bracket on the limiting beam 122. By adopting the above technical solution, the grounding efficiency of the electrical device 30 can be improved, and the performance of the electrical device 30 can be enhanced.

[0109] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery device, characterized in that, include: A housing with a receiving space, the housing includes a housing frame and a limiting beam electrically connected to the housing frame, the housing frame enclosing the receiving space, and the limiting beam being disposed within the receiving space; a battery cell assembly is housed within the receiving space and abuts against the limiting beam; An electrical device is disposed within the accommodating space and electrically connected to the battery cell assembly. The electrical device includes a housing, which is a conductive component, and the housing has an extension with one end electrically connected thereto, and the other end of the extension is electrically connected to the limiting beam.

2. The battery device according to claim 1, characterized in that, The battery device further includes a high-voltage control component, which is electrically connected to the battery cell assembly. The high-voltage control component has a housing, which is insulated from the enclosure, and the electrical components are connected to the housing.

3. The battery device according to claim 2, characterized in that, The outer casing includes a base plate and a cover, the cover being disposed over the base plate, and the base plate or the cover having the extension portion; The base plate is located between the cover and the box body, and is fixedly connected to the box body.

4. The battery device according to claim 3, characterized in that, The battery device further includes fasteners. The base plate is provided with at least one lug, the lug is provided with a first connecting hole, and the housing is provided with a second connecting hole. The first connecting hole and the second connecting hole are connected to each other. The fasteners are inserted through the first connecting hole and the second connecting hole to fix the base plate and the housing.

5. The battery device according to any one of claims 1-4, characterized in that, The connection between the extension and the outer shell includes integral connection, welding connection and bolt connection; And / or, the extension is welded to or bolted to the housing.

6. The battery device according to any one of claims 1-4, characterized in that, The extension has at least one bent section.

7. The battery device according to any one of claims 1-4, characterized in that, The thickness of the extension is not less than 1 mm.

8. The battery device according to any one of claims 1-4, characterized in that, The extension includes a first sub-extension and a second sub-extension, the first sub-extension and the second sub-extension are stacked and electrically connected, and at least one of the first sub-extension and the second sub-extension is electrically connected to the outer shell and the housing.

9. The battery device according to any one of claims 1-4, characterized in that, The electrical device is a filter or a battery management system.

10. An electrical appliance, characterized in that, The battery device includes any one of claims 1-9, the battery device being used to provide electrical energy or store electrical energy.

Images