Battery device and electric device

Abstract

The utility model provides a battery device and an electric device. The battery device comprises a box body comprising a box body, and the box body comprises a bottom wall, side walls and a cavity enclosed by the bottom wall and the side walls; the battery monomer is arranged in the cavity; the isolation structure is arranged in the cavity, the isolation structure and the bottom wall are connected to form a containing cavity, the containing cavity comprises a first opening in one end of the first direction, and the first direction is the thickness direction of the bottom wall; at least part of the electrical part is arranged in the containing cavity, the isolation structure is arranged on the peripheral side of the electrical part in a surrounding mode, a first clamping part is arranged on the outer surface of the electrical part, a second clamping part is arranged on the inner surface of the isolation structure, and the first clamping part and the second clamping part are connected in a clamping mode.

Description

Technical Field

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

[0002] Battery devices are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] The battery pack contains individual battery cells and electrical components, which control the stable and reliable power output of the battery pack. However, the reliability of the battery pack's electrical components still needs improvement. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can improve the reliability of electrical components and enhance the reliability of the battery device.

[0005] In a first aspect, this application provides a battery device, comprising: a housing, including a housing body, the housing body including a bottom wall, side walls, and a cavity enclosed by the bottom wall and side walls; a battery cell disposed within the cavity; an isolation structure disposed within the cavity, the isolation structure being connected to the bottom wall to form a receiving cavity, the receiving cavity including a first opening at one end in a first direction, the first direction being the thickness direction of the bottom wall; and electrical components, at least a portion of which are disposed within the receiving cavity, the isolation structure being surrounding the periphery of the electrical components, the outer surface of the electrical components being provided with a first snap-fit ​​element, the inner surface of the isolation structure being provided with a second snap-fit ​​element, the first snap-fit ​​element and the second snap-fit ​​element being snap-fit ​​connected.

[0006] In the embodiments of this application, the battery device includes a housing, battery cells, an isolation structure, and electrical components. The housing includes a housing body, a bottom wall, side walls, and a cavity formed by the bottom wall and side walls for accommodating the battery cells. The isolation structure is disposed within the cavity, and the isolation structure is connected to the bottom wall to form a receiving cavity. At least some of the electrical components are disposed in the receiving cavity. In the event of liquid in the cavity, the receiving cavity formed by the isolation structure separates the electrical components from the liquid, thereby improving the problem of liquid immersion in the electrical components and causing electrical component failure, and improving the reliability of the battery device. The electrical components are fixed to the isolation structure by the first and second snap-fit ​​components, which helps to improve the stability of the electrical components.

[0007] In some embodiments, the isolation structure and the bottom wall are integrally formed.

[0008] In the embodiments of this application, the isolation structure and the bottom wall are integrally formed, which helps to enhance the sealing performance at the connection between the isolation structure and the bottom wall and reduce the risk of liquid in the box entering the containment cavity.

[0009] In some embodiments, the first opening is located within the cavity.

[0010] In the embodiment of this application, by setting the first opening of the housing in the cavity, on the one hand, the electrical components inside the housing cavity can be separated from the external environment by the housing, and on the other hand, it is also convenient to install the electrical components and battery cells in the cavity, simplifying the processing flow of the battery device.

[0011] In some embodiments, the housing further includes a first cover plate, which is connected to an isolation structure and covers the first opening.

[0012] In the embodiment of this application, the first cover plate is used to close the first opening to reduce the risk of moisture and impurities in the cavity entering the receiving cavity through the first opening and contaminating the electrical components, thereby improving the reliability of the electrical components.

[0013] In some embodiments, the chamber includes a second opening at one end in a first direction, the second opening and the bottom wall being disposed opposite each other, and a first cover plate being connected to the chamber body and covering the second opening.

[0014] In the embodiments of this application, the first cover plate can simultaneously cover the second opening to simplify the structure of the battery device and reduce the production cost of the battery device.

[0015] In some embodiments, the battery device further includes a first seal, and the isolation structure is connected to the first cover plate via the first seal.

[0016] In the embodiment of this application, the isolation structure is connected to the first sealing member and the first cover plate to enhance the sealing performance at the connection between the isolation structure and the first cover plate and reduce the risk of water vapor impurities entering the receiving cavity through the first opening.

[0017] In some embodiments, the isolation structure is connected to the first cover plate along a first direction.

[0018] In the embodiment of this application, the isolation structure is connected to the first cover plate along the first direction, which simplifies the structure of the first cover plate and reduces the difficulty of matching the first cover plate and the isolation structure.

[0019] In some embodiments, the first cover plate includes a substrate and a shielding portion. The substrate is located on the side of the isolation structure facing away from the bottom wall in a first direction. The shielding portion is disposed on the side of the body facing the bottom wall and connected to the isolation structure. The shielding portion is disposed around the outside of the isolation structure, or the isolation structure is disposed around the outside of the shielding portion.

[0020] In the embodiments of this application, the shielding part is arranged around the outside of the isolation structure, or the isolation structure is arranged around the outside of the shielding part, which helps to increase the connection area between the isolation structure and the first cover plate, thereby enhancing the sealing reliability between the isolation structure and the first cover plate.

[0021] In some embodiments, the battery device further includes a conductive pad, and the isolation structure is provided with a first through hole, through which the conductive pad connects the battery cell and electrical components.

[0022] In the embodiment of this application, the conductive pad enters the receiving cavity through the first through hole provided on the isolation structure and connects with the electrical components, which simplifies the connection process between the conductive pad and the electrical components and helps to flexibly arrange the position of the conductive pad in order to improve the utilization efficiency of the cavity space.

[0023] In some embodiments, the first opening is located outside the cavity and extends through the bottom wall.

[0024] In the embodiment of this application, the first opening is located outside the cavity and penetrates the bottom wall to reduce the difficulty of maintenance of electrical components, improve the impact on the housing during the maintenance of electrical components, and help improve the reliability of the battery device.

[0025] In some embodiments, the isolation structure includes a side plate and an end plate, the side plate being connected to a bottom wall, and the end plate being connected to the end of the side plate away from the bottom wall.

[0026] In the embodiment of this application, the side plate and the end plate are connected to each other to form a sealed receiving cavity, which improves the problem of impurities and moisture entering the receiving cavity and causing electrical component failure.

[0027] In some embodiments, the isolation structure includes a second cover plate, which is connected to and closes the bottom wall to the first opening.

[0028] In the embodiment of this application, the second cover plate is connected to the bottom wall and can cover the first opening. The second cover plate can stably fix the electrical components in the receiving cavity.

[0029] In some embodiments, the bottom wall includes a battery segment and an electrical segment disposed at one end of the battery segment in a second direction. A battery cell is disposed in the battery segment, and an electrical component is disposed in the electrical segment. The first direction and the second direction intersect. The electrical segment is gradually inclined toward the cavity along the first direction from the end of the electrical segment near the battery segment to the end of the electrical segment away from the battery segment.

[0030] In the solution of this application embodiment, the electrical section is tilted so that if liquid is present in the box, the liquid can flow from the electrical section to the battery section, reducing the risk of liquid soaking electrical components in the electrical section.

[0031] In some embodiments, the bottom wall further includes a flow channel disposed on the side of the electrical section facing the chamber and extending along a second direction.

[0032] In the solution of this application embodiment, by setting a guide channel in the electrical section, the liquid can be guided to the battery section more quickly, reducing the risk of liquid soaking electrical components in the electrical section.

[0033] In some embodiments, the bottom wall and side walls are injection molded.

[0034] In the embodiments of this application, the injection molding of the bottom and side walls helps to reduce the weight of the casing, thereby increasing the energy density of the battery device.

[0035] In some embodiments, the battery device further includes a connector, a conductor, a first connector, and an equipotential bonding element. A mounting hole is provided through the side wall and / or bottom wall. The connector and at least part of the equipotential bonding element are inserted into the mounting hole. The equipotential bonding element and the connector are connected. The conductor is disposed in the cavity. The first connector connects the conductor and the equipotential bonding element. The conductor can be connected to a grounding point outside the battery device.

[0036] In the embodiments of this application, when the housing is an injection-molded housing, the connector and the conductor are connected by setting an equipotential bonding element and a first connector to achieve equipotential connection between the connector and the conductor inside the housing.

[0037] In some embodiments, the equipotential member includes an interconnected plug portion and a first folded portion. The plug portion extends into a mounting hole and is connected to a connector. The first folded portion is disposed on the side surface of the side wall and / or bottom wall facing the cavity and is connected to a first connector.

[0038] In the embodiment of this application, the equipotential member includes a plug-in portion and a first folded portion. The plug-in portion is connected to the connector in the mounting hole to enhance the installation reliability of the equipotential member and the connector. The first folded portion is disposed on the side surface of the side wall and / or bottom wall facing the cavity and is connected to the first connector to reduce the connection difficulty between the first connector and the equipotential member.

[0039] In some embodiments, the equipotential bonding element and the housing body are connected by injection-molded inserts.

[0040] In the embodiments of this application, the equipotential bonding element and the injection-molded insert of the housing body are connected to enhance the connection reliability between the housing body and the equipotential bonding element.

[0041] Secondly, embodiments of this application provide an electrical device, including the battery device described in the first aspect embodiment. Attached Figure Description

[0042] 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:

[0043] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application;

[0044] Figure 2 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application;

[0045] Figure 3 This is an exploded view of a single battery cell provided in an embodiment of this application;

[0046] Figure 4 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application;

[0047] Figure 5 yes Figure 4 Sectional view at point AA;

[0048] Figure 6 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application;

[0049] Figure 7 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application;

[0050] Figure 8 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application;

[0051] Figure 9 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application;

[0052] Figure 10 This is a partial top view of the battery device provided in another embodiment of this application;

[0053] Figure 11 yes Figure 10 Sectional view at point BB;

[0054] Figure 12 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application;

[0055] Figure 13 yes Figure 12 Sectional view at CC;

[0056] Figure 14 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application;

[0057] Figure 15 This is a partial exploded view of the battery device provided in one embodiment of this application;

[0058] Figure 16 This is a schematic diagram of the connector and the equipotential bonding element after they are mated.

[0059] Figure label:

[0060] 1. Vehicle; 101. Motor; 102. Controller;

[0061] 2. Battery assembly; 21. Housing; 211. Housing body; 212. First cover plate; 213. Bottom wall; 214. Side wall; 215. Chamber; 2121. Base plate; 2122. Shielding part; 2131. Battery section; 2132. Electrical section; 2133. Guide channel; 216. Mounting hole;

[0062] 3. Battery cell; 31. Housing; 32. Electrode assembly; 33. End cap assembly;

[0063] 41. Isolation structure; 42. First opening; 43. First sealing element; 44. Conductive pad; 45. Second cover plate; 411. Second snap-fit ​​element; 412. First through hole;

[0064] 5. Electrical components; 51. First connector;

[0065] 61. Connector; 62. First connecting member; 63. Equipotential bonding member; 631. Insertion part; 632. First folding part;

[0066] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0067] 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.

[0068] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0069] 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", "circumferential", etc., 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 do not 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.

[0070] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0071] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the 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.

[0072] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] 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 military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0074] The battery pack contains individual battery cells and electrical components, which control the stable and reliable power output of the battery pack. However, the reliability of the battery pack's electrical components still needs improvement.

[0075] The reason for the above problem is that the electrical components are fixed inside the enclosure. If there is liquid inside the enclosure, such as a leak in the heat exchange system or external liquid entering the enclosure, the liquid can easily soak the electrical components, leading to electrical component failure.

[0076] To address the aforementioned issues, this application provides a battery device comprising a housing, individual battery cells, an isolation structure, and electrical components. The housing includes a main body, a bottom wall, side walls, and a chamber formed by the bottom and side walls for accommodating the individual battery cells. The isolation structure is disposed within the chamber, connected to the bottom wall to form a receiving cavity. At least some of the electrical components are disposed within the receiving cavity. In the event of liquid within the chamber, the receiving cavity formed by the isolation structure separates the electrical components from the liquid, thereby mitigating the problem of liquid immersion in the electrical components leading to malfunction and improving the reliability of the battery device.

[0077] The technical solutions described in the embodiments of this application are applicable to battery devices and electrical devices that use battery devices.

[0078] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. 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, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0079] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0080] The battery cell 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., and this application embodiment is not limited to this. The battery cell can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to this either.

[0081] The battery device mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery device mentioned in this application may include a battery module or a battery pack. A battery pack generally includes a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0082] A single battery cell includes electrode components and an electrolyte. The electrode components include a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode components. The positive electrode includes a positive current collector and a positive active material layer, the latter coated on the surface of the current collector. The current collector includes a positive current-collecting section and a positive electrode tab connected to it. The current-collecting section is coated with the positive active material layer, while the tab is not. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material layer includes the positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector. The negative current collector includes a negative current collection section and a negative electrode tab connected to the negative current collection section. The negative current collection section is coated with the negative active material layer, while the negative electrode tab is not coated with the negative active material layer. The material of the negative current collector can be copper, and the negative active material layer includes negative active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0083] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including housings and electrical equipment using battery devices. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0084] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1 provided in some embodiments of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 2 is installed inside vehicle 1, and the battery device 2 can be located at the bottom, front, or rear of vehicle 1. The battery device 2 can be used to power vehicle 1; for example, the battery device 2 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 102 and a motor 101. The controller 102 is used to control the battery to supply power to the motor 101, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

[0085] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0086] Figure 2 A schematic diagram of the structure of a battery device 2 according to an embodiment of this application is shown.

[0087] The battery device 2 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 3, which are connected in series, parallel, or mixed connections via a busbar.

[0088] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 3.

[0089] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 3 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 3 together with cable ties.

[0090] In some embodiments, the battery device 2 may be a battery pack, which includes a housing 21 and one or more battery cell assemblies, the battery cell assemblies being housed in the housing 21.

[0091] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 21 by fixing the battery module in the housing 21.

[0092] As an example, the battery cell assembly can also be housed in the housing 21 by directly fixing multiple battery cells 3 to the housing 21.

[0093] In some embodiments, the housing 21 may be part of the chassis structure of the vehicle 1. For example, a portion of the housing 21 may be at least a portion of the floor of the vehicle 1, or a portion of the housing 21 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1.

[0094] Figure 3 This is an exploded view of a battery cell 3 provided in an embodiment of this application. The battery cell 3 refers to the smallest unit that makes up the battery device 2. For example... Figure 3 The battery cell 3 includes an end cap assembly 33, a housing 31, and an electrode assembly 32.

[0095] Electrode assembly 32 is the component in the battery cell 3 where electrochemical reactions occur. The casing 31 may contain one or more electrode assemblies 32. The electrode assembly 32 is mainly formed by winding or stacking electrode sheets, which are divided into positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the electrode body, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs can be located together at one end of the electrode body or separately at both ends of the electrode body. During the charging and discharging process of the battery cell 3, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0096] The electrode assembly 32 can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0097] In some embodiments, the electrode assembly 32 is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0098] In some embodiments, the electrode assembly 32 is a stacked structure. As an example, multiple positive and negative electrodes can be provided, with multiple positive and multiple negative electrodes stacked alternately. Multiple spacers can be provided and respectively provided between any adjacent positive or negative electrodes. Alternatively, the spacers can be provided continuously and provided between any adjacent positive or negative electrodes by folding.

[0099] In some embodiments, the electrode assembly 32 may be cylindrical, flat, or polygonal in shape.

[0100] In some embodiments, the electrode assembly 32 is provided with tabs that can conduct current from the electrode assembly 32. The tabs include a positive tab and a negative tab.

[0101] The battery cell 3 may include a housing 31. The housing 31 is an assembly used to cooperate with the end cap assembly 33 to form the internal environment of the battery cell 3, wherein the formed internal environment can accommodate the electrode assembly 32, electrolyte (not shown in the figure), and other components. The housing 31 can be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 31), or an aluminum-plastic film, etc. In some embodiments, the housing 31 can be a sealed structure or a non-sealed structure. As an example, when the housing 31 is a non-sealed structure, the housing 31 serves to protect the electrode assembly 32, and a sealing bag is also included between the housing 31 and the electrode assembly 32. The sealing bag is used to encapsulate the electrode assembly 32 and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating component or an aluminum-plastic film. When the housing 31 is a sealed structure, it is used to encapsulate the electrode assembly 32 and electrolyte, etc.

[0102] As an example, the battery cell 3 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include square battery cells, blade-shaped battery cells, and multi-prismatic battery cells. Multi-prismatic battery cells are, for example, hexagonal prismatic battery cells. This application does not have any particular limitations.

[0103] The housing 31 and the end cap assembly 33 can be independent components. One or more openings can be provided on the housing 31, and one or more end cap assemblies 33 can close the openings to form the internal environment of the battery cell 3. Optionally, the end cap assembly 33 and the housing 31 can also be integrated. Optionally, the end cap assembly 33 and the housing 31 can form a common connection surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 31, the end cap assembly 33 closes the housing 31.

[0104] In some embodiments, the electrode terminals can be disposed on the end cap assembly 33 or on the housing 31, and the electrode terminals are electrically connected to the electrode tabs. The electrode terminals can be directly connected to the electrode tabs or indirectly connected to the electrode tabs through an adapter mechanism.

[0105] Please see Figure 4 and Figure 5 , Figure 4 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application; Figure 5 yes Figure 4 Sectional view at point AA.

[0106] Firstly, such as Figure 2 , Figure 4 and Figure 5 As shown, this application provides a battery device 2, which includes a housing 21, a battery cell 3, an isolation structure 41, and electrical components 5. The housing 21 includes a housing body 211, which includes a bottom wall 213, a side wall 214, and a cavity 215 enclosed by the bottom wall 213 and the side wall 214. The battery cell 3 is disposed in the cavity 215. The isolation structure 41 is disposed in the cavity 215. The isolation structure 41 and the bottom wall 213 are connected to form a receiving cavity. The receiving cavity includes a first opening 42 at one end in a first direction X, where the first direction X is the thickness direction of the bottom wall 213. At least a portion of the electrical components 5 are disposed in the receiving cavity, and the isolation structure 41 is disposed around the periphery of the electrical components 5.

[0107] In the embodiment of this application, the battery device 2 includes a housing 21, a battery cell 3, an isolation structure 41, and electrical components 5. The housing 21 includes a housing body 211, which includes a bottom wall 213, a side wall 214, and a chamber 215 formed by the bottom wall 213 and the side wall 214 for accommodating the battery cell 3. The isolation structure 41 is disposed in the chamber 215, and the isolation structure 41 and the bottom wall 213 are connected to form a receiving cavity. At least some of the electrical components 5 are disposed in the receiving cavity. In the event of liquid in the chamber 215, the receiving cavity formed by the isolation structure 41 separates the electrical components 5 from the liquid, thereby improving the problem of liquid immersion in the electrical components 5 and causing electrical component 5 failure, and improving the reliability of the battery device 2.

[0108] Optionally, the enclosure 21 can be a metal enclosure or an injection-molded enclosure, etc.

[0109] For example, the housing 21 is an injection-molded housing, with the bottom wall 213 and side walls 214 injection-molded, which helps to reduce the weight of the housing 21 and increase the energy density of the battery device 2.

[0110] Optionally, one or more battery cells 3 are disposed within the chamber 215. For example, multiple battery cells 3 are arranged in an array along the length or width of the housing 21. For example, the number of battery cells 3 within the chamber 215 can be 1, 2, 3, 16, etc.

[0111] Optionally, the box body 211 includes a bottom wall 213 and a side wall 214, with the side wall 214 surrounding the peripheral edge connected to the bottom wall 213.

[0112] Optionally, electrical component 5 can be a relay, fuse, current sensor, etc.

[0113] Optionally, the isolation structure 41 and the bottom wall 213 are connected to form a receiving cavity, reducing the material cost of the isolation material. Exemplarily, the isolation structure 41 and the bottom wall 213 are molded separately, and then joined by heat fusion, bonding, or snap-fit. Exemplarily, the isolation structure 41 and the bottom wall 213 are integrally molded, which helps to enhance the sealing performance at the connection between the isolation structure 41 and the bottom wall 213, reducing the risk of liquid from inside the housing 21 entering the receiving cavity.

[0114] Optionally, the size and shape of the receiving cavity can be designed independently. For example, the receiving cavity may be cubic or cylindrical, etc.

[0115] Optionally, the isolation structure 41 is made of an insulating and waterproof material. This serves two purposes: firstly, it insulates the isolation structure 41 from the electrical component 5; secondly, it reduces the risk of liquid in the chamber 215 soaking the electrical component 5 through the isolation structure 41. For example, the isolation structure 41 can be made of polyethylene, polypropylene, or polystyrene, etc.

[0116] Optionally, the first opening 42 is provided at one end of the receiving cavity in the first direction X, and the electrical component 5 can be installed into the receiving cavity through the first opening 42.

[0117] Within the chamber 215 of the housing body 211, an isolation structure 41 is arranged around the periphery of the electrical component 5 and connected to the bottom wall 213 to house the electrical component 5 within the receiving cavity. In the event of liquid within the chamber 215, the liquid and the electrical component 5 are separated by the isolation structure 41, reducing the risk of the electrical component 5 being submerged by liquid.

[0118] For example, the isolation structures 41 are connected end to end to form a square shape, or the isolation structures 41 are connected end to end to form a cylindrical shape.

[0119] The presence of liquid in chamber 215 could be due to damage to the heat exchange system inside the housing 21, causing the heat exchange medium to leak into chamber 215; or insufficient sealing of housing 21, allowing external liquid to enter housing 21.

[0120] Optionally, the battery device 2 includes multiple electrical components 5, and two or more electrical components 5 can be installed in one receiving cavity. The isolation structure 41 is wound around the multiple electrical components 5 to reduce the material cost of the isolation structure 41; or the chamber 215 is provided with multiple receiving cavities, the battery device 2 includes multiple isolation structures 41, each receiving cavity is provided with one electrical component 5, and each isolation structure 41 is wound around one electrical component 5 to facilitate flexible setting of the position of the electrical components 5.

[0121] In some embodiments, such as Figure 5 As shown, the outer surface of the electrical component 5 is provided with a first snap-fit ​​member 51, and the inner surface of the isolation structure 41 is provided with a second snap-fit ​​member 411. The first snap-fit ​​member 51 and the second snap-fit ​​member 411 are snap-fitted together to fix the electrical component 5 on the isolation structure 41, which helps to improve the stability of the electrical component 5.

[0122] Optionally, one of the first snap-fit ​​component 51 and the second snap-fit ​​component 411 is a snap fastener, and the other of the first snap-fit ​​component 51 and the second snap-fit ​​component 411 is a slot.

[0123] Optionally, the slot can be located on the outer surface of the electrical component 5 or the inner surface of the isolation structure 41.

[0124] Optionally, the clip can be integrally molded with the electrical component 5, or the clip can be integrally molded with the isolation structure 41, to enhance the connection reliability between the clip and the electrical component 5 or the isolation structure 41. For example, the integral molding method can be integral injection molding.

[0125] Optionally, the clip can be separately installed from the electrical component 5, or separately installed from the isolation structure 41, to facilitate maintenance and replacement of the clip. For example, the separate installation method can be adhesive bonding or snap-fitting.

[0126] In some embodiments, such as Figure 4 and Figure 5 As shown, the first opening 42 is located inside the chamber 215.

[0127] In these embodiments, by setting the first opening 42 inside the chamber 215, the electrical components 5 inside the chamber can be separated from the external environment by the housing 21, and the electrical components 5 and the battery cell 3 can be installed inside the chamber 215, simplifying the processing flow of the battery device 2.

[0128] Optionally, the first opening 42 is located inside the chamber 215, and the first opening 42 is disposed opposite to the bottom wall 213 along the first direction X.

[0129] Optionally, the first opening 42 is located within the chamber 215, the size of the isolation structure 41 is smaller than the size of the sidewall 214, and the battery device 2 also includes a conductive bar 44, which can be connected to the electrical component 5 at the first opening 42. For example, the conductive bar 44 can be a high-voltage copper bar or a high-voltage aluminum bar, etc.

[0130] Please see Figure 6 , Figure 7 and Figure 8 , Figure 6 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application; Figure 7 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application; Figure 8 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application.

[0131] In some embodiments, such as Figures 6 to 8 As shown, the housing 21 also includes a first cover plate 212, which is connected to the isolation structure 41 and covers the first opening 42.

[0132] In these embodiments, the first cover plate 212 is used to cover the first opening 42 to reduce the risk of water vapor and impurities in the chamber 215 entering the receiving cavity through the first opening 42 and contaminating the electrical components 5, thereby improving the reliability of the electrical components 5.

[0133] Optionally, the connection between the first cover plate 212 and the isolation structure 41 can be by adhesive bonding, snap-fitting, or threaded connection.

[0134] Optionally, the first cover plate 212 is provided with a connection through hole, and the conductive bar 44 is connected to the electrical component 5 through the connection through hole on the cover plate.

[0135] Optionally, the shape and size of the first cover plate 212 can be designed independently. For example, the shape of the first cover plate 212 matches the shape of the first opening 42.

[0136] Optionally, the first cover plate 212 and the isolation structure 41 are detachably connected to facilitate the inspection and replacement of electrical components 5.

[0137] In some embodiments, such as Figure 2 , Figures 6 to 8 As shown, the chamber 215 includes a second opening (not shown) at one end in the first direction X. The second opening and the bottom wall 213 are disposed opposite each other. The first cover plate 212 is connected to the box body 211 and covers the second opening.

[0138] In these embodiments, the first cover plate 212 can simultaneously cover the second opening to simplify the structure of the battery device 2 and reduce the production cost of the battery device 2.

[0139] The first cover plate 212 can simultaneously cover the first opening 42 of the receiving cavity while covering the second opening of the box body 211. Alternatively, the first cover plate 212 can be reused as the end cover of the box body 21.

[0140] Optionally, the connection between the first cover plate 212 and the box body 211 can be a snap-fit ​​or bolt connection, etc.

[0141] As an example, the box body 211 and the first cover plate 212 are fastened together, so that the inside of the box body 21 forms a closed space to accommodate the battery cell 3. Here, "closed" means covered or closed, which can be sealed or not sealed.

[0142] In some embodiments, such as Figures 6 to 8 As shown, the battery device 2 also includes a first seal 43, and the isolation structure 41 is connected to the first cover plate 212 through the first seal 43.

[0143] In these embodiments, the isolation structure 41 is connected to the first seal 43 and the first cover plate 212 to enhance the sealing performance at the connection between the isolation structure 41 and the first cover plate 212 and reduce the risk of moisture impurities entering the receiving cavity through the first opening 42.

[0144] Optionally, a first seal 43 is disposed at the connection interface between the isolation structure 41 and the first cover plate 212, and the first seal 43 is used to seal this connection interface.

[0145] For example, the first seal 43 can be a sealing gel, a sealing ring, or a sealing strip, etc.

[0146] Optionally, the first seal 43 may be bonded or snapped onto one of the first cover plate 212 and the isolation structure 41.

[0147] In some embodiments, such as Figure 6 and Figure 7 As shown, the isolation structure 41 is connected to the first cover plate 212 along the first direction X.

[0148] In these embodiments, the isolation structure 41 is connected to the first cover plate 212 along the first direction X, which simplifies the structure of the first cover plate 212 and reduces the difficulty of fitting the first cover plate 212 and the isolation structure 41 together.

[0149] For example, the size of the isolation structure 41 in the first direction X is greater than or equal to the size of the sidewall 214, so that the isolation structure 41 can be connected to the first cover plate 212 when the first cover plate 212 is closed on the second opening.

[0150] Optionally, the isolation structure 41 is bonded or abutted against the first cover plate 212 along the first direction X.

[0151] Optionally, an annular first seal is disposed between the end of the isolation structure 41 away from the bottom wall 213 and the first cover plate 212. This reduces the material cost of the first seal 43 while sealing the connection interface between the isolation structure 41 and the first cover plate 212. Alternatively, a sheet-like first seal is disposed between the end of the isolation structure 41 away from the bottom wall 213 and the first cover plate 212. The orthogonal projection of the isolation structure 41 in its first direction X is located within the first seal 43, increasing the size of the first seal 43 and reducing the difficulty of setting the first seal 43.

[0152] In some embodiments, such as Figure 6 and Figure 8 As shown, the first cover plate 212 includes a base plate 2121 and a shielding portion 2122. The base plate 2121 is located on the side of the isolation structure 41 facing away from the bottom wall 213 in the first direction X. The shielding portion 2122 is disposed on the side of the body facing the bottom wall 213 and is connected to the isolation structure 41. The shielding portion 2122 is wrapped around the outside of the isolation structure 41, or the isolation structure 41 is wrapped around the outside of the shielding portion 2122.

[0153] In these embodiments, the shielding portion 2122 is disposed around the outside of the isolation structure 41, or the isolation structure 41 is disposed around the outside of the shielding portion 2122, which helps to increase the connection area between the isolation structure 41 and the first cover plate 212, thereby enhancing the sealing reliability between the isolation structure 41 and the first cover plate 212.

[0154] Optionally, one end of the shielding portion 2122 is connected to the side of the substrate 2121 facing the bottom wall 213, and the other end of the shielding portion 2122 extends toward the bottom wall 213 in the first direction X. The shielding portion 2122 is connected to the isolation structure 41.

[0155] Optionally, the substrate 2121 and the shielding portion 2122 are integrally formed.

[0156] Optionally, the shielding part 2122 and the isolation structure 41 are staggered in the first direction X. The shielding part 2122 is wrapped around the outside of the isolation structure 41 and contacts the outer surface of the isolation structure 41, reducing the risk of the electrical component 5 being squeezed and damaged by the shielding part 2122. The isolation structure 41 is wrapped around the outside of the shielding part 2122, which helps to reduce the volume of the shielding part 2122 and the isolation structure 41 in the chamber 215.

[0157] Optionally, the first seal 43 is disposed between the shielding portion 2122 and the isolation structure 41, and / or the first seal 43 is disposed between the substrate 2121 and the isolation structure 41.

[0158] In some embodiments, such as Figure 6 and Figure 7 As shown, the battery device 2 also includes a conductive pad 44, and the isolation structure 41 is provided with a first through hole 412. The conductive pad 44 connects the battery cell 3 and the electrical component 5 through the first through hole 412.

[0159] In these embodiments, the conductive pad 44 enters the receiving cavity through the first through hole 412 provided on the isolation structure 41 and connects with the electrical component 5, which simplifies the connection process between the conductive pad 44 and the electrical component 5 and helps to flexibly arrange the position of the conductive pad 44 to improve the utilization efficiency of the cavity 215 space.

[0160] Optionally, the battery device 2 further includes a second seal. The isolation structure 41 is connected to the conductive pad 44 through the second seal to enhance the sealing effect at the first through hole 412 and reduce the risk of external moisture and impurities entering the receiving cavity through the first through hole 412 and causing damage to the electrical components 5. For example, the second seal can be a sealing ring or sealant.

[0161] Please see Figure 9 , Figure 10 and Figure 11 , Figure 9 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application; Figure 10 This is a partial top view of the battery device provided in another embodiment of this application; Figure 11 yes Figure 10 Sectional view at point BB.

[0162] In some embodiments, such as Figures 9 to 11 As shown, the first opening 42 is located outside the chamber 215 and penetrates the bottom wall 213.

[0163] In these embodiments, the first opening 42 is located outside the chamber 215 and penetrates the bottom wall 213 to reduce the difficulty of maintenance of the electrical components 5, improve the impact of the maintenance of the electrical components 5 on the housing 21, and help improve the reliability of the battery device 2.

[0164] The first opening 42 penetrates the bottom wall 213, allowing the electrical component 5 to be placed from outside the chamber 215 into the receiving space.

[0165] Optionally, the isolation structure 41 includes a side plate and an end plate. The side plate is connected to the bottom wall 213, and the end plate is connected to the end of the side plate away from the bottom wall 213. The side plate and the end plate are connected to each other to form a sealed receiving cavity. The side plate can isolate the liquid and the electrical components 5 when there is liquid in the cavity 215, while the end plate is used to improve the isolation effect of the receiving cavity.

[0166] Optionally, the end plate is provided with a connection through hole, through which the conductive bar 44 is connected to the electrical component 5 in the receiving cavity.

[0167] In some embodiments, such as Figures 9 to 11 As shown, the isolation structure 41 includes a second cover plate 45, which is connected to and covers the bottom wall 213 at the first opening 42.

[0168] In these embodiments, the second cover plate 45 is connected to the bottom wall 213 and can cover the first opening 42, and the second cover plate 45 can stably fix the electrical component 5 in the receiving cavity.

[0169] Optionally, the second cover plate 45 is detachably connected to the bottom wall 213 to facilitate the inspection and maintenance of the electrical components 5. Exemplary connections include snap-fit ​​or bolted connections between the second cover plate 45 and the bottom wall 213.

[0170] Optionally, the second cover plate 45 can be the bottom cover plate of the battery device 2. When the bottom cover plate is disposed on the side of the bottom wall 213 away from the cavity 215, the bottom cover plate covers the first opening 42.

[0171] Please see Figure 12 and Figure 13 , Figure 12 This is a partial structural schematic diagram of a battery device provided in another embodiment of this application; Figure 13 yes Figure 12 Sectional view at point CC.

[0172] In some embodiments, such as Figure 12 and Figure 13 As shown, the bottom wall 213 includes a battery segment 2131 and an electrical segment 2132 disposed at one end of the battery segment 2131 in the second direction Y. The battery cell 3 is disposed in the battery segment 2131, and the electrical component 5 is disposed in the electrical segment 2132. The first direction X and the second direction Y intersect. The electrical segment 2132 is gradually inclined towards the cavity 215 along the first direction X from the end of the electrical segment 2132 close to the battery segment 2131 to the end of the electrical segment 2132 away from the battery segment 2131.

[0173] In these embodiments, the electrical section 2132 is tilted so that if liquid is present inside the housing 21, the liquid can flow from the electrical section 2132 to the battery section 2131, reducing the risk of liquid soaking the electrical components 5 in the electrical section 2132.

[0174] Optionally, the electrical section 2132 gradually tilts towards the cavity 215 along the first direction X, and the electrical component 5 is disposed on the electrical section 2132. On the one hand, in the event of leakage in the battery section 2131, the electrical component 5 is raised by the electrical section 2132, making it less likely for the liquid to soak the electrical component 5; on the other hand, in the event of leakage in the electrical section 2132, since the electrical section 2132 is tilted, the liquid will flow away quickly along the tilted surface, making it less likely for the liquid to soak the electrical component 5.

[0175] Optionally, from the end of the electrical segment 2132 away from the battery segment 2131 to the end of the electrical segment 2132 closer to the battery segment 2131, the angle between the planes containing the electrical segment 2132 and the battery segment 2131 gradually increases, or in other words, the end of the electrical segment 2132 closer to the battery segment 2131 is steeper, while the end away from the battery segment 2131 is relatively gentle, in order to place the electrical component 5 at a higher position and to facilitate the flow of liquid from the electrical segment 2132 into the battery segment 2131.

[0176] Optionally, the electrical component 5 is located at the end of the electrical segment 2132 away from the battery segment 2131, so that the electrical component 5 is located at a higher position.

[0177] Optionally, the angle between the planes containing electrical segment 2132 and battery segment 2131 Satisfying 5°≤ ≤10°. For example, The value can be 5°, 6°, 7°, 8°, 9°, 10°, etc.

[0178] In some embodiments, such as Figure 12 and Figure 13 As shown, the bottom wall 213 also includes a flow guide groove 2133, which is disposed on the side of the electrical section 2132 facing the chamber 215 and extends along the second direction Y.

[0179] In these embodiments, the guide channel 2133 provided in the electrical section 2132 can guide the liquid to the battery section 2131 more quickly, reducing the risk of the liquid soaking the electrical components 5 in the electrical section 2132.

[0180] Optionally, the flow channel 2133 extends from the end of the electrical segment 2132 away from the battery segment 2131 to the end of the electrical segment 2132 near the battery segment 2131.

[0181] Optionally, the guide channel 2133 is a straight channel to facilitate rapid guidance of liquid flow.

[0182] Optionally, multiple guide channels 2133 are spaced apart along a third direction Z, with the first direction X, the second direction Y, and the third direction Z intersecting each other. For example, the first direction X is the height direction of the housing 21, the second direction Y is either the length direction or the width direction of the housing 21, and the third direction Z is either the length direction or the width direction of the housing 21.

[0183] Please see Figure 14 , Figure 15 and Figure 16 , Figure 14 This is a partial structural schematic diagram of a battery device provided in one embodiment of this application; Figure 15 This is a partial exploded view of the battery device provided in one embodiment of this application; Figure 16 This is a schematic diagram of the connector and the equipotential bonding element after they are mated.

[0184] In some embodiments, such as Figure 2 , Figures 14 to 16 As shown, the battery device 2 also includes a connector 61, a conductor (not shown), a first connector 62, and an equipotential bonding member 63. A mounting hole 216 is provided through the side wall 214 and / or the bottom wall 213. The connector 61 and at least part of the equipotential bonding member 63 are inserted into the mounting hole 216. The equipotential bonding member 63 and the connector 61 are connected. The conductor is disposed in the cavity 215. The first connector 62 connects the conductor and the equipotential bonding member 63. The conductor can be connected to a grounding point outside the battery device 2.

[0185] In these embodiments, when the housing 21 is an injection-molded housing 21, the connector 61 and the conductor are connected by providing an equipotential bonding member 63 and a first connector 62 to achieve equipotential connection between the connector 61 and the conductor inside the housing 21.

[0186] During the manufacturing process of battery device 2, equipotential design should be considered to ensure that there is no large potential difference between the conductor parts of battery device 2 and the chassis / ground of external vehicle 1 or equipment.

[0187] In related technologies, the battery device 2 includes a metal housing 21, and the connector 61 and the conductors in the chamber 215 are all connected to the metal housing 21. The metal housing 21 is connected to the vehicle frame to achieve the equipotential design of the connector 61 and the conductors.

[0188] However, in the injection molded housing 21, the connector 61 and the conductor in the chamber 215 cannot be equipotentially connected through the housing 21. Therefore, in this embodiment, an equipotential connection method is provided for the injection molded housing 21.

[0189] The connector 61 is inserted into the mounting hole 216 of the side wall 214 and / or the bottom wall 213. The connector 61 includes a terminal portion and a metal shielding layer surrounding the terminal portion. The terminal portion is used to connect with external devices, and the metal shielding layer is used to resist external interference to the terminal portion.

[0190] The equipotential bonding element 63 is a conductor, and it is connected to the metal shielding layer of the connector 61. For example, the material of the equipotential bonding element 63 is copper, copper alloy, aluminum, aluminum alloy, or stainless steel.

[0191] Optionally, a metal spring is provided on the outer periphery of the connector 61 to fix the connector 61 in the mounting hole 216. The metal spring is connected to the metal shielding layer, and at least part of the equipotential bonding element 63 is inserted into the mounting hole 216 and located between the metal spring and the hole wall of the mounting hole 216 to enhance the connection reliability between the connector 61 and the equipotential bonding element 63.

[0192] Optionally, at least part of the equipotential bonding element 63 is wound around the outer periphery of the connector 61 to increase the connection area between the connector 61 and the equipotential bonding element 63.

[0193] The first connector 62 is connected to the equipotential member 63 and the conductor member, which is a metal structural member in the cavity 215 that does not carry the main current.

[0194] Optionally, the conductor can be one or more of the following: a metal end plate, a metal bracket for fixing the battery cell 3, a shielding layer for the high-voltage busbar, a metal water pipe for the heat exchange system, or a battery management system.

[0195] Optionally, the first connector 62 is locked to the equipotential bonding member 63.

[0196] For example, the first connector 62 can be a wire harness or a conductive sheet, etc.

[0197] Optionally, the conductor is connected to an external equipotential point, which can be the vehicle frame of vehicle 1 or the chassis of equipment, etc.

[0198] Optionally, the battery device 2 further includes a second connector, through which the conductor is connected to an external equipotential point. For example, the second connector may be a wire harness or a conductive sheet, etc.

[0199] Optionally, the side wall 214 and / or the bottom wall 213 are provided with wire-passing holes, through which the second connector extends.

[0200] Optionally, the equipotential bonding element 63 and the enclosure body 211 are connected by injection-molded inserts to enhance the connection reliability between the enclosure body 211 and the equipotential bonding element 63. Alternatively, the equipotential bonding element 63 can be bonded, snap-fitted, or bolted to the enclosure body 211.

[0201] In some embodiments, such as Figure 2 , Figure 15 and Figure 16 As shown, the equipotential member 63 includes a plug-in portion 631 and a first folding portion 632 that are connected to each other. The plug-in portion 631 extends into the mounting hole 216 and is connected to the connector 61. The first folding portion 632 is disposed on the side surface of the side wall 214 and / or the bottom wall 213 facing the cavity 215 and is connected to the first connector 62.

[0202] In these embodiments, the equipotential member 63 includes a plug portion 631 and a first folding portion 632. The plug portion 631 is connected to the connector 61 in the mounting hole 216 to enhance the installation reliability of the equipotential member 63 and the connector 61. The first folding portion 632 is disposed on the side surface of the side wall 214 and / or the bottom wall 213 facing the chamber 215 and is connected to the first connector 62 to reduce the connection difficulty between the first connector 62 and the equipotential member 63.

[0203] Optionally, the plug portion 631 and the first fold portion 632 are integrally formed to enhance the structural strength of the equipotential member 63.

[0204] Optionally, the equipotential bonding member 63 further includes a second folded portion, which is disposed on the side surface of the side wall 214 and / or the bottom wall 213 away from the cavity 215 and is not connected to the plug-in connector. The second folded portion increases the connection area between the equipotential bonding member 63 and the housing 21, thereby improving the stability of the equipotential bonding member 63.

[0205] Optionally, the second folding portion can be used to connect with the first connector 62, or the battery device 2 may further include a third wiring harness connected to the second folding portion and an equipotential point outside the battery device 2.

[0206] Secondly, embodiments of this application provide an electrical device, including the battery device described in the first aspect embodiment.

[0207] In some embodiments, such as Figures 1 to 16As shown, the battery device 2 includes a housing 21, battery cells 3, an isolation structure 41, electrical components 5, connectors 61, conductors, a first connector 62, and an equipotential bonding element 63. The housing 21 includes a housing body 211 and a first cover plate 212. The housing body 211 includes a bottom wall 213, side walls 214, and a cavity 215 enclosed by the bottom wall 213 and side walls 214. The bottom wall 213 includes a battery segment 2131 and an electrical segment 2132 disposed at one end of the battery segment 2131 in the second direction Y. The electrical segment 2132 is located near the end of the battery segment 2131. The electrical segment 2132 is located away from the battery segment 2131 at one end, and the electrical segment 2132 is gradually inclined towards the cavity 215 along the first direction X. The battery cell 3 is disposed in the cavity 215 and located in the battery segment 2131. The isolation structure 41 is disposed in the cavity 215. The isolation structure 41, bottom wall 213 and side wall 214 are integrally injection molded. The isolation structure 41 and the electrical segment 2132 are connected to form a receiving cavity, which includes a first opening 42 at one end in the first direction X. At least a portion of the electrical component 5 is disposed in the receiving cavity.

[0208] The first opening 42 is located inside the chamber 215, which includes a second opening at one end in the first direction X. The second opening and the bottom wall 213 are disposed opposite each other. The first cover plate 212 is connected to the housing body 211 and covers the second opening. The isolation structure 41 is connected to the first cover plate 212 through the first sealing member 43. Alternatively, the first opening 42 is located outside the receiving cavity and extends through the bottom wall 213. The second cover plate 45 is connected to the bottom wall 213 and covers the first opening 42. The side wall 214 and / or the bottom wall 213 are provided with mounting holes 216. The connector 61 and at least part of the equipotential member 63 are inserted into the mounting holes 216. The equipotential member 63 includes an interlocking plug portion 631 and a first folding portion 632. The plug portion 631 extends into the mounting hole 216 and is connected to the connector 61. The conductor is disposed inside the chamber 215. The first connector 62 connects the conductor and the first folding portion 632. The conductor can be connected to the grounding point outside the battery device 2.

[0209] In these embodiments, the battery device 2 includes a housing 21, battery cells 3, an isolation structure 41, and electrical components 5. The housing 21 includes a housing body 211, which includes a bottom wall 213, side walls 214, and a chamber 215 formed by the bottom wall 213 and side walls 214 for accommodating the battery cells 3. The isolation structure 41 is disposed within the chamber 215, and the isolation structure 41 is connected to the bottom wall 213 to form a receiving cavity. At least a portion of the electrical components 5 are disposed within the receiving cavity. In the event of liquid in the chamber 215, the receiving cavity formed by the isolation structure 41 separates the electrical components 5 from the liquid, thereby mitigating the problem of liquid immersion in the electrical components 5, which could lead to malfunction of the electrical components 5, and improving the reliability of the battery device 2.

[0210] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. 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 by, The battery device comprises: a box body comprising a box main body, the box main body comprising a bottom wall, a side wall, and a cavity enclosed by the bottom wall and the side wall; a battery cell arranged in the cavity; an isolation structure arranged in the cavity, the isolation structure being connected with the bottom wall and forming a containing cavity, the containing cavity comprising a first opening at one end in a first direction of the containing cavity, the first direction being a thickness direction of the bottom wall; an electrical component, at least part of the electrical component being arranged in the containing cavity, the isolation structure being arranged around a peripheral side of the electrical component, an outer surface of the electrical component being provided with a first clamping component, an inner surface of the isolation structure being provided with a second clamping component, the first clamping component and the second clamping component being clamped and connected.

2. The battery device according to claim 1, characterized by The isolation structure and the bottom wall are integrally formed.

3. The battery device according to claim 1 or 2, characterized by The first opening is located in the cavity.

4. The battery device of claim 3, wherein The box body further comprises a first cover plate, the first cover plate being connected with the isolation structure and covering the first opening.

5. The battery device of claim 4, wherein, The cavity comprises a second opening at one end in the first direction of the cavity, the second opening being oppositely arranged with the bottom wall, the first cover plate being connected with the box main body and covering the second opening.

6. The battery device of claim 4, wherein The battery device further comprises a first sealing component, the isolation structure being connected with the first cover plate through the first sealing component.

7. The battery device of claim 4, wherein The isolation structure is connected with the first cover plate along the first direction.

8. The battery device of claim 4, wherein The first cover plate comprises a base plate and a shielding part, the base plate being located on a side of the isolation structure away from the bottom wall in the first direction, the shielding part being arranged on a side of the main body facing the bottom wall and being connected with the isolation structure, The shielding part is arranged around an outer side of the isolation structure, or the isolation structure is arranged around an outer side of the shielding part.

9. The battery device of claim 4, wherein, The battery device further comprises a conductive tab, the isolation structure being provided with a first through hole, the conductive tab connecting the battery cell and the electrical component through the first through hole.

10. The battery device according to claim 1 or 2, characterized by The first opening is located outside the containing cavity and penetrates through the bottom wall.

11. The battery device of claim 10, wherein, The isolation structure comprises a second cover plate, the second cover plate being connected with the bottom wall and covering the first opening.

12. The battery device of claim 1, wherein, The bottom wall comprises a battery section and an electrical section arranged at one end of the battery section in a second direction of the bottom wall, the battery cell being arranged in the battery section, the electrical component being arranged in the electrical section, the first direction and the second direction intersecting, wherein, from one end of the electrical section close to the battery section to one end of the electrical section away from the battery section, the electrical section is gradually arranged to be inclined towards the cavity along the first direction.

13. The battery device of claim 12, wherein, The bottom wall further comprises a flow guide groove, the flow guide groove being arranged on a side of the electrical section facing the cavity and extending along the second direction.

14. The battery device of claim 1, wherein, The bottom wall and the side wall are injection molded.

15. The battery device of claim 14, wherein, The battery device further comprises a connector, a conductor component, a first connecting component, and an equipotential component, the side wall and / or the bottom wall being provided with a mounting hole penetrating through, the connector and at least part of the equipotential component being inserted into the mounting hole, the equipotential component being connected with the connector, the conductor component being arranged in the cavity, the first connecting component connecting the conductor component and the equipotential component, the conductor component being capable of being connected with a grounding point outside the battery device.

16. The battery device of claim 15, wherein, The equipotential member comprises a plug-in part and a first folded part connected to each other, the plug-in part extends into the mounting hole and is connected with the connector, and the first folded part is arranged on a side surface of the side wall and / or the bottom wall towards the cavity and is connected with the first connecting member.

17. The battery device of claim 15, wherein, The equipotential member and the box body are injection-molded insert connection.

18. An electrical device, comprising: The battery device comprises the battery device according to any one of claims 1-17.

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