Battery device, power utilization device and energy storage device

Abstract

The utility model provides a battery device, a power utilization device and an energy storage device, and belongs to the technical field of batteries. The battery device comprises a box body, a connector and at least one battery monomer, the at least one battery monomer is accommodated in the box body; the connector comprises a shell, a connecting terminal and an elastic shielding piece arranged around the connecting terminal, the shell is connected with the outer surface of the box body, at least part of the connecting terminal is contained in the shell, the elastic shielding piece is arranged between the shell and the outer surface of the box body, and the elastic shielding piece can generate elastic deformation under extrusion of the shell and the box body. The elastic member abuts against the box body and is electrically connected with the box body. In the technical scheme of the invention, the elastic shielding piece is elastically deformed under the extrusion action of the shell and the box body, and the elastic deformation can absorb the installation error of the elastic shielding piece and make up the poor contact caused by vibration, so that the reliable contact between the elastic shielding piece and the box body is realized, and the use reliability and safety of the connector are improved.

Description

Technical Field

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

[0002] With the development of battery technology and the increasing requirements for environmental protection, rechargeable batteries are being used more widely in all aspects of production and daily life, and the market demand is constantly expanding.

[0003] In related technologies, batteries are typically connected to electrical components via connectors, and the reliability of signal transmission through these connectors has always been a major concern in this field. Utility Model Content

[0004] This application aims to at least address one of the technical problems existing in the background art. Therefore, one object of this application is to provide a battery device, an electrical device, and an energy storage device to improve the reliability of the connector.

[0005] An embodiment of the first aspect of this application provides a battery device, including: a housing, a connector, and at least one battery cell; at least one battery cell is housed in the housing; the connector includes a housing, connecting terminals, and an elastic shield disposed around the connecting terminals, the housing is connected to the outer surface of the housing, at least a portion of the connecting terminals is housed within the housing, the elastic shield is disposed between the housing and the outer surface of the housing, and the elastic shield is capable of elastic deformation under compression between the housing and the housing to abut against the housing and be electrically connected to the housing.

[0006] In the technical solution of this application embodiment, due to the use of an elastic shielding component surrounding the connecting terminals, when the elastic shielding component is installed between the housing and the enclosure, it undergoes elastic deformation under compression. This elastic deformation can absorb installation errors of the elastic shielding component and compensate for poor contact caused by vibration, achieving reliable contact between the elastic shielding component and the enclosure, thereby maintaining the integrity and reliability of the shielding path and improving the reliability and safety of the connector. Furthermore, since the elastic shielding component is installed between the enclosure and the housing by compression, compared to the spring-loaded connection method in related technologies, it is less prone to failure under long-term vibration and fatigue, improving the reliability of the shielding path, reducing the short-circuit risk of the connecting terminals, and further enhancing the reliability and safety of the connector.

[0007] In some embodiments, the housing has a mounting surface facing the outer surface of the enclosure, and an annular groove is provided on the mounting surface, in which the elastic shield is installed.

[0008] In this embodiment, by providing an annular groove on the outer shell, the movement of the elastic shield within the mounting surface can be restricted, improving the problem of displacement of the elastic shield caused by vibration conditions and enhancing its reliability. The depth of the annular groove also allows for control of the elastic deformation of the elastic shield, preventing excessive compression and permanent deformation, thus extending its service life. Simultaneously, by controlling the elastic deformation, the interaction force between the elastic shield and the housing can be rationally set, improving the reliability of their connection.

[0009] In some embodiments, the elastic shielding member is provided with a locking portion, and the housing is provided with a mating portion, wherein the locking portion is engaged with the mating portion.

[0010] In this embodiment, the locking part and the mating part can be used to position the elastic shield and the annular groove, which is beneficial for the installation of both, improves assembly efficiency, and reduces assembly errors.

[0011] In some embodiments, the engaging portion includes a plurality of protrusions disposed on the edge of the elastic shield; the protrusions protrude outward from the elastic shield in a direction away from the connecting terminal, and the mating portion includes a plurality of mating grooves disposed on the mounting surface, the mating grooves communicating with the annular groove, and each protrusion engaging in a mating groove.

[0012] In this embodiment, by setting multiple protrusions and multiple mating grooves to engage one by one, the installation and positioning of the elastic shield and the annular groove can be achieved. The structure is simple, easy to implement, and can reduce costs.

[0013] In some embodiments, the depth D1 of the annular groove satisfies: 1mm≤D1≤1.5mm.

[0014] In this embodiment, by setting the depth of the annular groove to be no less than 1 mm, the elastic deformation of the elastic shielding component can be accommodated, and the volume of the area covered by the elastic shielding component on the connection terminal can be increased as much as possible, thereby improving the electromagnetic shielding effect. By setting the depth of the annular groove to be no more than 1.5 mm, the slot size of the shell can be reduced, the structural strength of the shell can be improved, and the requirements for the shell size can be reduced, making the connector structure more compact.

[0015] In some embodiments, the resilient shield is sealed between the outer casing and the housing.

[0016] In this embodiment, the elastic shielding component can not only serve as a shield, but also seal the outer shell and the housing. It can simultaneously replace the metal shielding ring and sealing ring in related technologies, improve the redundant design of separating shielding and sealing functions in traditional solutions, reduce the number of parts and structural complexity, and simplify the assembly process.

[0017] In some embodiments, the elastic shielding member includes a plurality of sub-parts connected sequentially in a direction away from the connection terminal, and a recess between two adjacent sub-parts is provided to allow elastic deformation of the sub-parts.

[0018] The sub-parts and recessed parts allow the elastic shielding component to be compressed when subjected to pressure. The sub-parts are compressed, while the recessed parts provide a certain deformation space for the sub-parts, thereby improving the elastic deformation capability of the elastic shielding component.

[0019] In some embodiments, a shielding cover is also provided outside the connecting terminal, an elastic shielding member surrounds the shielding cover, and both ends of the shielding cover protrude from the elastic shielding member along the first direction, and the shielding cover is connected to the outer shell; wherein, the first direction is parallel to the center line of the elastic shielding member.

[0020] In this embodiment, by setting a shielding cover, the electromagnetic shielding of the connection terminals can be further improved through the dual action of the shielding cover and the elastic shielding component, thereby improving the shielding effect and adapting to scenarios with more stringent shielding requirements, thus enhancing the versatility of the connector.

[0021] In some embodiments, the ring width D2 of the elastic shield satisfies: 5mm ≤ D2 ≤ 8mm; and / or, the conductivity A of the elastic shield satisfies: A ≥ 10. -4 S / m; and / or, the elastic modulus B of the elastic shielding component satisfies: B≤5 MPa; and / or, the compression deformation ratio C of the elastic shielding component satisfies: 15%≤C≤25%.

[0022] By setting the elastic modulus of the elastic shielding component to no more than 5 MPa, it can adapt to the unevenness of the enclosure surface through elastic deformation during installation, absorbing installation errors and improving stress concentration caused by excessive rigidity, thus extending its service life. By setting the conductivity of the elastic shielding component, it can form an effective electromagnetic shielding path in the low-to-mid-frequency range; setting the conductivity to no less than 10... -4S / m can effectively achieve electromagnetic shielding of the connection terminals in the low-frequency to mid-frequency range. By setting the ring width of the elastic shielding component to no more than 8mm, the slot size of the housing can be reduced, the structural strength of the housing can be improved, and the requirements for the housing size can be reduced, making the connector structure more compact. By setting the ring width of the elastic shielding component to no less than 5mm, the contact area between the elastic shielding component and the housing can be increased, improving the situation of shielding path breakage caused by poor local contact, improving the connection reliability between the elastic shielding component and the housing, and thus improving the reliability of shielding. At the same time, it can also improve the sealing effect between the housing and the housing. In this embodiment, by setting the compression deformation of the elastic shielding component to no more than 25%, the elasticity of the elastic shielding component can be maintained, improving the situation of fatigue or permanent deformation due to excessive compression, and increasing the service life. By setting the compression deformation of the elastic shielding component to no less than 15%, the magnitude of the interaction force between the elastic shielding component and the housing can be increased, so that the elastic shielding component can be reliably connected to the housing, improving the reliability and integrity of the shielding path.

[0023] In some embodiments, the elastic shielding element is made of conductive silicone.

[0024] By using conductive silicone as the material for the elastic shielding component, it gains excellent elastic deformation capability, thereby improving the reliability of contact with the enclosure and the sealing effect. Simultaneously, it enhances the conductivity of the elastic shielding component, improving the reliability of electromagnetic shielding.

[0025] An embodiment of the second aspect of this application provides an electrical device that includes the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0026] An embodiment of the third aspect of this application provides an energy storage device, which includes the battery device in the above embodiments, and the energy storage device is used to store electrical energy.

[0027] 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

[0028] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0029] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0030] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0031] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0032] Figure 4 Here are some structural schematic diagrams of the enclosures and connectors provided in this application;

[0033] Figure 5 This is another structural schematic diagram of some of the enclosures and connectors provided in this application;

[0034] Figure 6 for Figure 4 A schematic diagram of the connector structure;

[0035] Figure 7 for Figure 4 Another structural diagram of the connector;

[0036] Figure 8 for Figure 6 Rear view;

[0037] Figure 9 for Figure 7 A partial cross-sectional schematic diagram of the elastic shielding component and the annular groove;

[0038] Figure 10 for Figure 6 A schematic diagram of the structure of the connecting terminal.

[0039] Figure label explanation:

[0040] 1000 vehicles;

[0041] Battery unit 100, controller 200, motor 300;

[0042] Battery cell assembly 10, battery cell 11, end cap 12, housing 13, electrode assembly 14;

[0043] Housing 20, first part 21, second part 22, connector 30;

[0044] The outer shell is 400, the mounting surface is 410, the annular groove is 411, the mating part is 420, the mating groove is 421, the slot is 430, the cylindrical body is 440, and the plate body is 450.

[0045] Connection terminal 500, shielding cover 510, clip 511;

[0046] The elastic shielding component 600 has a sub-part 610, a recessed part 620, an engaging part 630, and a protrusion 631. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 three cases: a exists alone, a and b exist simultaneously, and b exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] 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).

[0053] 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.

[0054] 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.

[0055] Currently, the application of rechargeable batteries is becoming increasingly widespread, judging from market trends. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, the market demand is also constantly increasing.

[0056] In related technologies, batteries and electrical components are connected via connectors to transmit high-voltage or low-voltage signals. To improve the connector's resistance to electromagnetic interference (EMI), a metal shielding ring is usually provided in the connector. The metal shielding ring can be set around the terminals of the connector. The metal shielding ring is connected to the battery casing through a contact connection so that it can be grounded through the metal casing of the battery, thereby achieving electromagnetic shielding.

[0057] However, since both the metal shielding ring and the battery casing are made of relatively hard metal components, poor contact can easily occur between them due to installation errors or vibrations, causing the shielding path to break. Especially in high-vibration environments (such as the driving conditions of new energy vehicles), the shielding effect is significantly reduced, leading to electromagnetic interference leakage and affecting the stability and safety of electronic equipment.

[0058] In addition, the metal shielding ring is usually abutted against the connector housing by a spring. Long-term vibration or fatigue can easily cause the spring to fail, which in turn can lead to the interruption of the shielding path. It can also cause poor fit between the metal shielding ring and the connector housing, which may pose a risk of terminal short circuit.

[0059] To address at least one of the aforementioned problems, embodiments of this application provide a battery device, an electrical device, and an energy storage device. The battery device includes: a housing, a connector, and at least one battery cell. At least one battery cell is housed within the housing. The connector includes a housing, connecting terminals, and an elastic shield surrounding the connecting terminals. The housing is connected to the outer surface of the housing, at least a portion of the connecting terminals is housed within the housing, and the elastic shield is disposed between the housing and the outer surface of the housing. The elastic shield is capable of elastic deformation under pressure from the housing and the housing to abut against the housing and achieve electrical connection. Because of the elastic shield surrounding the connecting terminals, when the elastic shield is installed between the housing and the housing, it undergoes elastic deformation under pressure. This elastic deformation can absorb installation errors of the elastic shield and compensate for poor contact caused by vibration, achieving reliable contact between the elastic shield and the housing. This maintains the integrity and reliability of the shielding path, improving the reliability and safety of the connector. In addition, the elastic shielding component is installed between the housing and the outer shell by compression. Compared with the spring contact method in related technologies, it is less likely to fail under long-term vibration and fatigue, which improves the reliability of the shielding path, reduces the short-circuit risk of the connection terminals, and further improves the reliability and safety of the connector.

[0060] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0061] The energy storage device utilizing battery devices as a power source in this application embodiment includes one or more battery clusters to enhance the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are 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 multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0062] 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, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical devices during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0063] In this application embodiment, the power-consuming device using a battery as a power source can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0064] It should be understood that the technical solutions described in the embodiments of this application are not limited to the energy storage devices and electrical devices described above, but can also be applied to all battery devices including connectors and electrical devices using battery devices, thereby improving the reliability of battery devices. However, for the sake of brevity, the following embodiments will all use a vehicle as an example of an electrical device for illustration.

[0065] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0066] 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.

[0067] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0068] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 10 for providing voltage and capacity. The battery cell assembly 10 may include multiple battery cells 11, which are connected in series, parallel, or mixed connection via a busbar.

[0069] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0070] As an example, the battery cell assembly 10 can be a battery module, which is formed by arranging and fixing multiple battery cells 11 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 11 together with cable ties.

[0071] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 20 and one or more battery cell assemblies 10, with the battery cell assemblies 10 housed within the housing 20. The housing 20 can 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 housing 20 can be made of alloy materials such as aluminum alloy or iron alloy, or other metal materials. The housing 20 can be grounded, for example, through connection to the vehicle frame or chassis, or through connection to a grounding busbar inside the battery device.

[0072] As an example, the battery cell assembly 10 can be a battery module, and the battery cell assembly 10 can be housed in the housing 20 by fixing the battery module in the housing 20.

[0073] As an example, the battery cell assembly 10 can also be housed in the housing 20 by directly fixing multiple battery cells 11 to the housing 20.

[0074] As an example, the housing 20 may include a first part 21 and a second part 22. The first part 21 and the second part 22 are fastened together to form a closed space inside the housing 20 to house the battery cell assembly 10. Here, "closed" refers to covering or closing, and can be either non-sealed or sealed to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cell 11. The first part 21 may be a top cover or a bottom plate.

[0075] As an example, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 20 forms an enclosed space to house the battery cell assembly 10.

[0076] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0077] The battery cell 11 provided in the embodiments of this application can be a secondary battery. A secondary battery refers to a battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0078] The battery cell 11 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 the embodiments of this application are not limited to this.

[0079] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. The battery cell 11 refers to the smallest unit that makes up the battery. For example... Figure 3 The battery cell 11 includes an end cap 12, a housing 13, an electrode assembly 14, and other functional components.

[0080] End cap 12 refers to a component that covers the opening of housing 13 to isolate the internal environment of battery cell 11 from the external environment. The shape of end cap 12 can be adapted to the shape of housing 13 to fit it. In some embodiments, end cap 12 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 12 is less prone to deformation under pressure and impact, enabling battery cell 11 to have higher structural strength and improved safety performance. Functional components such as electrode terminals can be provided on end cap 12. Electrode terminals can be used for electrical connection with electrode assembly 14 for outputting or inputting electrical energy to battery cell 11. In some embodiments, end cap 12 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 11 reaches a threshold. The material of end cap 12 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 12. The insulating element can be used to isolate the electrical connection components within the housing 13 from the end cap 12 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0081] The housing 13 is a component used to cooperate with the end cap 12 to form the internal environment of the battery cell 11. This internal environment can accommodate the electrode assembly 14, electrolyte, and other components. The housing 13 and the end cap 12 can be independent components. An opening can be provided on the housing 13, and the end cap 12 closes the opening to form the internal environment of the battery cell 11. Alternatively, the end cap 12 and the housing 13 can be integrated. Specifically, the end cap 12 and the housing 13 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 13, the end cap 12 closes the housing 13. The housing 13 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 13 can be determined according to the specific shape and size of the electrode assembly 14. The housing 13 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0082] Electrode assembly 14 is the component in the battery cell 11 where the electrochemical reaction takes place. The housing 13 may contain one or more electrode assemblies 14. Electrode assembly 14 is mainly formed by winding and forming positive and negative electrode plates, and a separator is typically provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly.

[0083] Figure 4 Here are some structural schematic diagrams of the enclosures and connectors provided in this application; Figure 5 This is another structural schematic diagram of some of the enclosures and connectors provided in this application; Figure 6 for Figure 4 A schematic diagram of the connector structure; Figure 7 for Figure 4 Another structural diagram of the connector; Figure 8 for Figure 6 Rear view; Figure 9 for Figure 7 A partial cross-sectional schematic diagram of the elastic shield and the annular groove.

[0084] Please refer to Figures 4 to 9 This application provides a battery device 100, including: a housing 20, a connector 30, and at least one battery cell 11; at least one battery cell 11 is housed within the housing 20; the connector 30 includes a housing 400, a connection terminal 500, and an elastic shield 600 surrounding the connection terminal 500; the housing 400 is connected to the outer surface of the housing 20; at least a portion of the connection terminal 500 is housed within the housing 400; the elastic shield 600 is disposed between the housing 400 and the outer surface of the housing 20; and the elastic shield 600 is capable of elastic deformation under the compression of the housing 400 and the housing 20 to abut against the housing 20 and be electrically connected to the housing 20.

[0085] The housing 20 includes a first part 21 and a second part 22, and the connector 30 can be connected to either the first part 21 or the second part 22.

[0086] It is understood that connector 30 can be a high-voltage connector for transmitting high-voltage signals or a low-voltage connector for transmitting low-voltage signals, depending on the actual situation. Connector 30 can be connected to the outer surface of housing 20 through common connection methods, such as screwing or riveting.

[0087] The connector may include a housing 400, connecting terminals 500, and a resilient shield 600. The housing 400 may be made of an insulating material, such as insulating plastic (e.g., PA66, a semi-crystalline polymer made by polycondensation of hexamethylenediamine and adipic acid) or insulating rubber.

[0088] The connection terminal 500 can be a signal transmission component in the connector 30, for example, it can be connected to the plug of an electrical component by means of plugging or other means.

[0089] The housing 400 can be fitted over the connecting terminal 500 to protect the connecting terminal 500. For example... Figure 4 As shown, the housing 400 may include a cylindrical body 440 and a plate-like body 450. The cylindrical body 440 may be generally cylindrical in shape, and its cross-section may be circular, square, rounded rectangular, etc. The cylindrical body 440 may be used to accommodate at least part of the connecting terminals 500. The plate-like body 450 may be connected to one end of the cylindrical body 440, and it may protrude from the outer surface of the cylindrical body 440. The plate-like body 450 may be used to connect to the outer surface of the housing 20. For example, the plate-like body 450 may be provided with connecting holes, through which fasteners such as screws or bolts may pass to fix and connect to the housing 20, thereby realizing the connection between the housing 20 and the connector 30.

[0090] The elastic shielding component can be made of an elastic conductive material, such as conductive silicone or conductive rubber. It is understood that for the elastic shielding component 600 to achieve its shielding function, it needs to be made of a conductive material and grounded. In this embodiment, the elastic shielding component 600 is grounded through its connection with the housing 20; the specific connection method will be explained later. Furthermore, the elastic shielding component 600 can also be elastic, meaning it can undergo elastic deformation under external force, such as compression deformation.

[0091] The elastic shield 600 can be arranged around the connecting terminal 500, such as... Figure 7As shown, the connecting terminal 500 passes through the housing 400 and extends into the interior of the box 20. The elastic shield 600 can extend along the circumference of the connecting terminal 500 into a ring structure with the ends connected. It can be understood that the ring structure here refers to the ends being connected, and does not limit the shape of the area enclosed by the elastic shield. The shape can be a circle, a rectangle, a triangle, a rounded rectangle, or other shapes.

[0092] The elastic shield 600 can be connected between the outer surface of the housing 400 and the outer surface of the enclosure 20. For example, the housing 400 can have a mounting surface 410 facing the enclosure 20, which can be a plane. The outer surface of the enclosure 20 can also be a plane. The elastic shield 600 can be connected between the mounting surface 410 and the outer surface of the enclosure.

[0093] It is understandable that when the outer shell 400 is fixed to the box 20, it can compress the elastic shield 600 between the two. Under the action of the compressive force, the elastic shield can deform, that is, be compressed, so that the elastic shield 600 can abut against the outer surface of the box 20.

[0094] The housing 20 can be made of conductive materials such as metal or alloy, and can be grounded through grounding busbars inside the chassis, frame or battery device. Therefore, by abutting the elastic shield 600 against the outer surface of the housing 20, the elastic shield 600 can be grounded, thereby forming a shielding circuit to electromagnetically shield the connection terminals.

[0095] In this embodiment, the elastic shielding member 600 can be arranged circumferentially around the connecting terminal. However, there is no limitation on its thickness in the extension direction of the connecting terminal. It can be a shallow cup-shaped structure with a smaller thickness, or a cylindrical structure with a larger thickness, etc. Specifically, it can be configured according to the electromagnetic shielding requirements of the connector.

[0096] It is understandable that in scenarios where electromagnetic shielding requirements are not high, even a small thickness of the elastic shielding element 600 can meet the requirements for electrostatic shielding. Of course, in scenarios with higher electromagnetic shielding requirements, the thickness of the elastic shielding element 600 can be increased accordingly. Alternatively, the coverage of the shielding path can be improved by utilizing the shielding element in the plug of the electrical component. For example, when the plug is connected to the connector 30, the shielding element in the plug can extend to contact the elastic shielding element 600, or extend into the area enclosed by the elastic shielding element 600, to improve the shielding effect.

[0097] In this embodiment, by using an elastic shielding component surrounding the connecting terminal, when the elastic shielding component is installed between the outer shell and the housing, it undergoes elastic deformation under compression. This elastic deformation can absorb the installation error of the elastic shielding component and compensate for poor contact caused by vibration, thereby achieving reliable contact between the elastic shielding component and the housing, thus maintaining the integrity and reliability of the shielding path and improving the reliability and safety of the connector.

[0098] In addition, the elastic shield is installed between the housing and the outer shell by compression. Compared with the spring contact method in related technologies, it is less likely to fail under long-term vibration and fatigue, which improves the reliability of the shielding path and reduces the risk of short circuit caused by the elastic shield being directly connected to the connection terminal due to poor connection between the elastic shield and the outer shell. This further improves the reliability and safety of the connector.

[0099] In related technologies, the metal shielding ring needs to be welded to the spring. The processing and welding of the metal shielding ring increases manufacturing costs and is not conducive to large-scale production and lightweight requirements. However, in this embodiment, the elastic shielding component can replace the metal shielding ring and spring in the related technologies, simplifying processing, reducing costs, and facilitating the expansion of production scale and the lightweight requirements.

[0100] According to some embodiments of this application, please refer to Figures 7 to 9 The outer casing 400 has a mounting surface 410 facing the outer surface of the housing 20, and an annular groove 411 is provided on the mounting surface 410, and the elastic shield 600 is installed in the annular groove 411.

[0101] The mounting surface 410 can be the surface of the plate 450 facing the housing 20. The annular groove 411 can be provided on the mounting surface 410 and can surround the connecting terminal 500. The annular groove 411 can extend along the circumference of the connecting terminal 500 into a ring structure with the ends connected. It can be understood that the ring structure here refers to the end-to-end connection and does not limit the shape of the area enclosed by the annular groove 411. The shape can be a circle, a rectangle, a triangle, a rounded rectangle, or other shapes.

[0102] The size of the annular groove 411 can match the size and shape of the annular elastic shield 600, so that the elastic shield 600 can be embedded in the annular groove 411.

[0103] Figure 9The diagram illustrates the positional relationship between the elastic shield 600 in its natural state without external pressure and the annular groove. It can be understood that when the elastic shield 600 is in its natural state, it can protrude beyond the annular groove (or mounting surface 410). After the outer shell is connected to the housing, the elastic shield 600 can be compressed to be flush with the mounting surface 410, allowing the mounting surface 410 to fit against the outer surface of the housing 20. At this time, the thickness of the elastic shield 600 can be equal to the depth D1 of the annular groove 411, thus enabling reliable contact between the elastic shield 600 and the housing 20 through elastic deformation, improving the reliability of the shielding path.

[0104] In some embodiments, such as Figure 8 As shown, a portion of the housing 400 can be located within the area enclosed by the annular groove. This portion of the housing can isolate the connection terminals and the elastic shield, reducing the risk of short circuits.

[0105] In this embodiment, by providing an annular groove on the outer shell, the movement of the elastic shield within the mounting surface can be restricted, improving the problem of displacement of the elastic shield caused by vibration conditions and enhancing its reliability. The depth of the annular groove also allows for control of the elastic deformation of the elastic shield, preventing excessive compression and permanent deformation, thus extending its service life. Simultaneously, by controlling the elastic deformation, the interaction force between the elastic shield and the housing can be rationally set, improving the reliability of their connection.

[0106] Based on some embodiments of this application, continue to refer to Figure 9 The depth D1 of the annular groove 411 satisfies: 1mm≤D1≤1.5mm.

[0107] As can be seen from the above analysis, the depth D1 of the annular groove can characterize the thickness of the elastic shield after compression, and can be measured in millimeters (mm). The depth D1 of the annular groove 411 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm, etc.

[0108] In other embodiments, the depth D1 of the annular groove may have other ranges, such as 1.1mm≤D1≤1.5mm, 1mm≤D1≤1.4mm, 1.2mm≤D1≤1.4mm, etc.

[0109] In this embodiment, by setting the depth of the annular groove to be no less than 1 mm, the elastic deformation of the elastic shielding component can be accommodated, and the volume of the area covered by the elastic shielding component on the connection terminal can be increased as much as possible, thereby improving the electromagnetic shielding effect. By setting the depth of the annular groove to be no more than 1.5 mm, the slot size of the shell can be reduced, the structural strength of the shell can be improved, and the requirements for the shell size can be reduced, making the connector structure more compact.

[0110] It is understandable that when elastic shielding is used to seal the outer shell and enclosure, this parameter range can also take into account the sealing contact area between the outer shell and the enclosure, as well as the space constraints of the outer shell, so that the elastic shielding can still maintain its elastic recovery ability after compression.

[0111] In some embodiments, the compression deformation ratio C of the elastic shield 600 satisfies: 15% ≤ C ≤ 25%.

[0112] Continue to refer to Figure 9 The size of the elastic shield 600 when it is not compressed can be D4, and its size after compression can be the depth of the annular groove D1. That is, the elastic deformation of the elastic shield 600, that is, the compression deformation D3 = D4 - D1, and the compression deformation ratio C = D3 / D4, that is, the ratio between the compression deformation and the size when it is not compressed.

[0113] In this embodiment, the compression deformation ratio can be 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, etc. In other embodiments, the compression deformation ratio can also be 15%≤C≤22%, 18%≤C≤25%, or 18%≤C≤23%, etc.

[0114] It is understandable that the compression deformation ratio can be related to the compressive force on the elastic shield, that is, to the magnitude of the interaction force between the elastic shield and the box.

[0115] In this embodiment, by setting the compression deformation of the elastic shielding component to no more than 25%, the elasticity of the elastic shielding component can be maintained, the situation of fatigue or permanent deformation due to excessive compression can be improved, and the service life can be increased. By setting the compression deformation of the elastic shielding component to no less than 15%, the magnitude of the interaction force between the elastic shielding component and the housing can be increased (the contact pressure can be 0.5-1.2 N / mm²), so that the elastic shielding component can be reliably connected to the housing, improving the reliability and integrity of the shielding path.

[0116] The compression deformation ratio in this embodiment is set based on the mechanical properties of the material and the actual working conditions, so that the elastic shield can maintain the sealing performance under long-term compression, adapt to complex working conditions such as temperature cycling and vibration environment, and balance the shielding effect, sealing performance and long-term reliability.

[0117] According to some embodiments of this application, please refer to Figure 7 and Figure 8 The elastic shield 600 is provided with a locking part 630, and the outer shell 400 is provided with a mating part 420. The locking part 630 is locked and connected to the mating part 420.

[0118] The engaging portion 630 and the mating portion 420 can be implemented in various ways. For example, they can be located on the side of the elastic shield 600 away from the housing 20, and the mating portion 420 can be located within the annular groove 411. Alternatively, the engaging portion 630 can be located on the inner circumferential surface (inner ring) of the elastic shield, and the mating portion 420 can be located within the area enclosed by the annular groove 411.

[0119] The engaging portion 630 can be a first protrusion, and the mating portion 420 can be a first groove that matches the shape of the first protrusion. Alternatively, the engaging portion 630 can be a first groove, and the mating portion 420 can be a first protrusion that matches the shape of the first groove, etc.

[0120] In this embodiment, the locking part and the mating part can be used to position the elastic shield and the annular groove, which is beneficial for the installation of both, improves assembly efficiency, and reduces assembly errors.

[0121] According to some embodiments of this application, the engaging portion 630 includes a plurality of protrusions 631 disposed on the edge of the elastic shield 600; the protrusions 631 protrude outward from the elastic shield 600 in a direction away from the connecting terminal 500, and the mating portion 420 includes a plurality of mating grooves 421 disposed on the mounting surface 410, the mating grooves 421 communicating with the annular groove 411, and each protrusion 631 engaging in a mating groove 421.

[0122] In this embodiment, the engaging portion 630 may include a protrusion 631 disposed on the outer peripheral surface (outer ring) of the elastic shield 600. The protrusion 631 may protrude outward in a circumferential direction from the inside to the outside. The shape of the protrusion 631 may also be various, such as a cylinder along the protrusion direction, or a cuboid, etc.

[0123] Similarly, the engaging portion 630 may include a plurality of mating grooves 421, which may be disposed on the mounting surface 410 and may also communicate with the annular groove 411 from the outside. The shape of the mating groove 421 may be set according to the shape of the protrusion 631, for example, it may be cylindrical or cuboid, etc.

[0124] It is understandable that the number of protrusions 631 can be multiple, such as 2, 3, 4, etc. Multiple protrusions can also be arranged at intervals along the circumference of the elastic shield, such as being equally spaced. Figure 7 The diagram shows two protrusions 631, which are equally spaced on the upper and lower sides of the elastic shield 600. Correspondingly, the mounting surface 410 has two mating grooves 421, which are equally spaced on the upper and lower sides of the annular groove. Each protrusion 631 can be form-fitted into one mating groove 421.

[0125] In some embodiments, the mating groove 421 may penetrate the housing in a direction away from the connection terminal to reduce manufacturing costs.

[0126] In this embodiment, by setting multiple protrusions and multiple mating grooves to engage one by one, the installation and positioning of the elastic shield and the annular groove can be achieved. The structure is simple, easy to implement, and can reduce costs.

[0127] According to some embodiments of this application, the elastic shield 600 is sealed between the outer shell 400 and the housing 20.

[0128] It is understood that in this embodiment, the elastic shield 600 can also serve as a seal between the outer shell and the housing 20. It is understood that, since the elastic shield surrounds the connecting terminal and is disposed between the housing and the outer shell, the elastic deformation of the elastic shield can block moisture and dust, thus achieving a sealing effect.

[0129] Understandably, in related technologies, connectors achieve shielding through metal shielding rings and seal between the connector shell and housing through sealing rings. This results in a complex structure, numerous parts, and cumbersome assembly steps.

[0130] In this embodiment, the elastic shielding component can not only serve as a shield, but also seal the outer shell and the housing. It can simultaneously replace the metal shielding ring and sealing ring in related technologies, improve the redundant design of separating shielding and sealing functions in traditional solutions, reduce the number of parts and structural complexity, and simplify the assembly process.

[0131] In addition, the elastic deformation of the elastic shielding component can dynamically compensate for contact loosening caused by installation errors or vibration, thereby achieving long-term stability of the shielding path and sealing performance.

[0132] In some embodiments, please refer to Figure 8 The ring width D2 of the elastic shielding component satisfies: 5mm≤D2≤8mm.

[0133] It is understood that the elastic shield is a ring structure, and its ring width D2 refers to the width of one side parallel to the mounting surface 410, which can be measured in millimeters (mm). In this embodiment, the ring width D2 of the elastic shield can be 5mm, 6mm, 7mm, or 8mm, etc.

[0134] In other embodiments, the ring width D2 can also satisfy other ranges, such as 5.5mm≤D2≤8mm, or 5mm≤D2≤7.5mm, or 6mm≤D2≤7mm, etc.

[0135] By setting the ring width of the elastic shield to no more than 8mm, the slot size of the housing can be reduced, the structural strength of the housing can be improved, and the size requirements of the housing can be lowered, resulting in a more compact connector structure. Setting the ring width of the elastic shield to no less than 5mm increases the contact area between the elastic shield and the housing, mitigating shielding path breaks caused by poor local contact, and improving the connection reliability between the elastic shield and the housing, thereby enhancing shielding reliability. Simultaneously, it also improves the sealing effect between the housing and the enclosure.

[0136] According to some embodiments of this application, please refer to Figure 7 and Figure 8 The elastic shield 600 includes a plurality of sub-parts 610 connected sequentially in a direction away from the connecting terminal 500, and a recess 620 is provided between two adjacent sub-parts 610 to allow the sub-parts 610 to undergo elastic deformation.

[0137] It can be understood that the elastic shield 600 may include a plurality of annular sub-parts 610, the plurality of sub-parts being arranged along the annular structure from the inside out. Figure 8 The components are connected radially outward from the center. A recessed portion 620 may be formed between two adjacent sub-parts 610. Taking the side of the elastic shielding member facing the housing as an example, the sub-part 610 may protrude towards the housing 20, and a recessed portion 620 may be formed between two adjacent sub-parts, thus creating an uneven surface. Similarly, the side of the elastic shielding member facing the bottom of the annular groove 411 may also have an uneven surface.

[0138] The sub-parts and recessed parts allow the elastic shielding component to be compressed when subjected to pressure. The sub-parts are compressed, while the recessed parts provide a certain deformation space for the sub-parts, thereby improving the elastic deformation capability of the elastic shielding component.

[0139] It is understandable that the electromagnetic shielding requirements of connector 30 vary depending on the application scenario. In scenarios where the shielding requirements are not strict, the shielding effect of the elastic shielding member 600 alone can meet the shielding requirements. In scenarios where the shielding requirements are more stringent, the connection terminal 500 of connector 30 can also be provided with other shielding structures to further improve the shielding effect. Details are explained in conjunction with the following embodiments.

[0140] Figure 10 for Figure 6 A structural diagram of the intermediate connection terminal. Please refer to... Figure 7 and Figure 10According to some embodiments of this application, a shielding cover 510 is also provided outside the connecting terminal 500, and an elastic shielding member 600 surrounds the shielding cover 510. Both ends of the shielding cover 510 protrude from the elastic shielding member 600 along the first direction X. The shielding cover 510 is connected to the outer shell 400. The first direction X is parallel to the center line of the elastic shielding member 600.

[0141] In this embodiment, in addition to providing the elastic shield 600, a shielding cover 510 can also be provided outside the connecting terminal 500. The shielding cover 510 can extend along a first direction X, which can be the direction in which the connecting terminal 500 extends and passes through the housing 20, that is, the direction parallel to the centerline of the elastic shield 600. The shielding cover 510 can be made of conductive materials such as metal to provide electromagnetic shielding for the connecting terminal 500.

[0142] like Figure 10 In this context, it can be understood that the connecting terminal 500 has a conductive part for transmitting signals and an insulating part for supporting and insulating. The insulating part can be located outside the conductive part to provide insulation and improve the reliability of signal transmission. The shielding cover 510 can be a cylindrical structure or the like, and it can be fixedly installed outside the insulating part. A portion of the shielding cover 510 can be located inside the housing 20, and another portion can be located outside the housing 20. The length of the shielding cover 510 along the first direction X can be set according to the length of the connecting terminal, and it can cover at least a portion of the connecting terminal in the first direction X to improve the shielding effect.

[0143] During assembly, the shielding cover 510 and the connecting terminal 500 can be assembled into a single unit and then installed inside the housing 400 using common connection methods such as snap-fit, riveting, and screwing. Additionally, the elastic shielding member 600 can surround the shielding cover 510. Since the shielding cover 510 is installed between the housing and the enclosure, it also extends outwards from both ends of the elastic shielding member 600 along the first direction X.

[0144] It is understood that in some embodiments, such as Figure 7 As shown, a partial outer shell 400 is also provided between the annular groove 411 and the shielding cover 510. The shielding cover 510 can be engaged with this partial outer shell. At this time, the shielding cover 510 can be isolated from the elastic shielding member, and the two have no direct contact connection. They can be grounded through different shielding paths. For example, the shielding cover 510 can extend to connect with the conductive parts inside the box for grounding. The elastic shielding member can be grounded through the box by contacting the box.

[0145] By grounding the shielding cover 510 and the elastic shielding element 600 respectively, the connection terminals can be shielded through two shielding paths, improving the shielding effect and reliability. Furthermore, it is understood that although the shielding cover 510 and the elastic shielding element 600 are isolated from each other, the gap between them is very small, and magnetic leakage is negligible, thus not significantly affecting the shielding effect.

[0146] In other embodiments, the shield 510 may also be in contact with the elastic shield, for example, the shield 510 may abut against the inner ring of the elastic shield, so that a grounding path can be used, and a shielding path can be realized from the shield to the elastic shield and then to the housing.

[0147] There are multiple ways for the shielding cover and the outer shell to engage. For example, the inner surface of the outer shell 400 can be provided with multiple slots 430, and the slots 430 are located within the area enclosed by the elastic shielding member 600; the shielding cover 510 is provided with multiple buckles 511 around its circumference, and the buckles engage with the slots 430. It can be understood that the slots 430 and buckles 511 can be set one-to-one, one-to-many, or many-to-one, depending on the actual situation.

[0148] The shape of the slot 430 and the buckle 511 can also be varied. For example, the buckle 511 can be a protruding spring piece, and the slot 430 can have a corresponding shape, so that the spring piece can be engaged into the slot.

[0149] In this embodiment, by setting a shielding cover, the electromagnetic shielding of the connection terminals can be further improved through the dual action of the shielding cover and the elastic shielding component, thereby improving the shielding effect and adapting to scenarios with more stringent shielding requirements, thus enhancing the versatility of the connector.

[0150] According to some embodiments of this application, the conductivity A of the elastic shield 600 satisfies: A≥10 -4 S / m.

[0151] Electrical conductivity A is a physical quantity that measures the ability of a material to conduct electricity, and can be measured in Siemens per meter (S / m). In this embodiment, the electrical conductivity A of the elastic shield 600 can be 10. -4 S / m, 10 -3 S / m, 10 -2 S / m, etc. Additionally, in other embodiments, the conductivity can also satisfy A≥10. -3 S / m, or A≥10 -2 S / m, etc.

[0152] By setting the conductivity of the elastic shielding component, it can be made to form an effective electromagnetic shielding path in the low-frequency to mid-frequency range. This can be achieved by setting the conductivity to be no less than 10. -4S / m can provide shielding effectiveness of more than 40 dB in the low to mid frequency range, effectively achieving electromagnetic shielding of the connection terminals.

[0153] In some embodiments, the elastic modulus B of the elastic shield 600 satisfies: B≤5 MPa.

[0154] Among them, the elastic modulus B is a physical quantity that measures a material's ability to resist deformation during the elastic deformation stage. It describes the ease with which a material undergoes elastic strain (recoverable deformation) when subjected to stress (force per unit area), and can be expressed in megapascals (MPa).

[0155] In this embodiment, the elastic modulus B of the elastic shield 600 can be 5 MPa, 4.5 MPa, 4 MPa, 3.5 MPa, etc. Alternatively, the elastic modulus B can be less than or equal to 4.5 MPa, or less than or equal to 4 MPa.

[0156] By setting the elastic modulus of the elastic shield to no more than 5MPa, it is possible to adapt to the unevenness of the enclosure surface through elastic deformation during installation, absorb installation errors, improve the stress concentration caused by excessive rigidity, and extend service life.

[0157] According to some embodiments of this application, the elastic shield 600 is made of conductive silicone.

[0158] As is understandable, conductive silicone is a common material made by mixing conductive materials and silicone rubber. It can transmit electrical signals while maintaining elasticity. The conductive material can be one or more of materials such as copper, silver, and carbon.

[0159] By using conductive silicone as the material for the elastic shielding component, it gains excellent elastic deformation capability, thereby improving the reliability of contact with the enclosure and the sealing effect. Simultaneously, it enhances the conductivity of the elastic shielding component, improving the reliability of electromagnetic shielding.

[0160] In some embodiments, conductive silicone refers to a first material composed of a mixture of silver material and silicone rubber material, wherein the volume ratio E1 of silver material to the first material satisfies: 30%≤E1≤40%.

[0161] In this embodiment, the elastic shielding component can be formed by uniformly mixing silver material and silicone rubber material. For example, silver powder is mixed into silicone rubber liquid and then fully and uniformly mixed to form an elastic conductive material (first material) with conductivity and elastic deformation capability.

[0162] In this embodiment, the volume ratio E1 of silver material to the first material can be 30%, 32%, 34%, 36%, 38%, 40%, etc.

[0163] In other embodiments, the volume ratio E1 may have other ranges, such as 35%≤E1≤40%, 30%≤E1≤35%, or 32%≤E1≤38%, etc.

[0164] In this embodiment, by setting the volume ratio E1 of silver material to the first material to be no higher than 40%, the elastic shielding component can have good elastic deformation capability, thereby improving the reliability of contact with the housing and the sealing effect. By setting the volume ratio E1 of silver material to the first material to be no less than 30%, the conductivity of the elastic shielding component can be improved, thus improving the reliability of electromagnetic shielding.

[0165] In some embodiments, conductive silicone refers to a second material composed of a mixture of silver material, carbon material and silicone rubber material, wherein the volume ratio E2 of silver material to the second material satisfies: 10%≤E2≤30%, and the volume ratio E3 of carbon material to the second material satisfies: 5%≤E3≤20%.

[0166] In this embodiment, the elastic shielding component can be formed by uniformly mixing silver material, carbon material and silicone rubber material. For example, silver powder and carbon powder are mixed into silicone rubber liquid and then fully and uniformly mixed to form an elastic conductive material (second material) with conductivity and elastic deformation capability.

[0167] In this embodiment, the volume ratio E2 of silver material to the second material can be 10%, 15%, 20%, 25%, 30%, etc.

[0168] In other embodiments, the volume ratio E2 may have other ranges, such as 15%≤E2≤30%, 10%≤E2≤25%, or 15%≤E2≤25%, etc.

[0169] In this embodiment, the volume ratio E3 of silver material to the second material can be 5%, 10%, 15%, 20%, etc.

[0170] In other embodiments, the volume ratio E3 may have other ranges, such as 8%≤E3≤15%, 5%≤E3≤15%, or 8%≤E3≤20%, etc.

[0171] In some embodiments, the volume ratio E4 (E2+E3) of the total volume of silver and carbon materials to the volume of the second material can satisfy 30%≤E4≤40%. For example, the volume ratio E2 of silver materials to the second material can be 20%, and the volume ratio E3 of carbon materials to the second material can be 10%.

[0172] By setting the volume ratio of silver to the second material (E2) to be no higher than 30% and the volume ratio of carbon to the second material (E3) to be no higher than 20%, the elastic shielding component can have good elastic deformation capability, thereby improving the reliability of contact with the enclosure and the sealing effect. By setting the volume ratio of silver to the second material (E2) to be no less than 10% and the volume ratio of carbon to the second material (E3) to be no less than 5%, the conductivity of the elastic shielding component can be improved, thus enhancing the reliability of electromagnetic shielding.

[0173] This application provides an electrical device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to provide electrical energy.

[0174] Electrical devices include vehicles (such as cars, electric vehicles, ships, spacecraft, etc.), display devices (such as mobile phones, tablets, laptops, etc.), electric toys, power tools, etc.

[0175] It is understood that the electrical device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0176] This application provides an energy storage device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to store electrical energy.

[0177] Energy storage devices can include, but are not limited to, centralized energy storage devices (such as containerized energy storage devices), distributed energy storage devices, mobile energy storage devices, wearable energy storage devices, and so on.

[0178] It is understood that the energy storage device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0179] In some embodiments, the battery device 100 includes: a housing 20, a connector 30, and at least one battery cell 11; the at least one battery cell 11 is housed within the housing 20; the connector 30 includes a housing 400, a connection terminal 500, and an elastic shield 600 surrounding the connection terminal 500; the housing 400 is connected to the outer surface of the housing 20; at least a portion of the connection terminal 500 is housed within the housing 400; the elastic shield 600 is disposed between the housing 400 and the outer surface of the housing 20, and the elastic shield 600 is elastically deformable under compression between the housing 400 and the housing 20 to abut against the housing 20 and be electrically connected to the housing 20. The elastic shield 600 is sealed between the housing 400 and the housing 20.

[0180] In addition, the sealing level can reach IP67 (IP code (International Protection / Ingress Protection) is a general standard established by the International Electrotechnical Commission for the level of protection of electrical equipment enclosures against foreign objects and moisture intrusion). IP67 completely prevents dust ingress and, under specified conditions, will not cause harmful water ingress when the enclosure is immersed in water.

[0181] In this embodiment, the elastic deformation of the elastic shield can dynamically compensate for contact loosening caused by installation errors or vibration, achieving long-term stability of the shielding path and sealing performance. Simultaneously, the connecting terminals can be completely enclosed by the insulating shell, and the elastic shield only needs to contact the enclosure. This structural design reduces the risk of short circuits, achieving dual protection of electrical safety and mechanical reliability.

[0182] In addition, the elastic shielding component can not only serve as a shield, but also seal the outer shell and enclosure. It can replace the metal shielding ring and sealing ring in related technologies, improve the redundant design of separating shielding and sealing functions in traditional solutions, reduce the number of parts and structural complexity, and simplify the assembly process.

[0183] 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 in that, include: At least one battery cell; The housing contains at least one battery cell. A connector comprising a housing, connecting terminals, and an elastic shield surrounding the connecting terminals. The housing is connected to the outer surface of a housing. At least a portion of the connecting terminals is housed within the housing. The elastic shield is disposed between the housing and the outer surface of the housing, and the elastic shield is capable of elastic deformation under compression between the housing and the housing to abut against the housing and be electrically connected to the housing.

2. The battery device according to claim 1, characterized in that, The outer casing has a mounting surface facing the outer surface of the housing, and an annular groove is provided on the mounting surface, in which the elastic shield is installed.

3. The battery device according to claim 2, characterized in that, The elastic shielding component is provided with a locking part, and the outer shell is provided with a mating part, wherein the locking part is locked and connected to the mating part.

4. The battery device according to claim 3, characterized in that, The engaging portion includes a plurality of protrusions disposed on the edge of the elastic shield; the protrusions protrude outward from the elastic shield in a direction away from the connecting terminal; the mating portion includes a plurality of mating grooves disposed on the mounting surface; the mating grooves communicate with the annular grooves; and each of the protrusions is engaged in one of the mating grooves.

5. The battery device according to claim 2, characterized in that, The depth D1 of the annular groove satisfies: 1mm≤D1≤1.5mm.

6. The battery device according to any one of claims 1-5, characterized in that, The elastic shielding element is sealed between the outer shell and the housing.

7. The battery device according to any one of claims 1-5, characterized in that, The elastic shielding member includes a plurality of sub-parts connected sequentially in a direction away from the connecting terminal, and a recess between two adjacent sub-parts is provided to allow the sub-parts to undergo elastic deformation.

8. The battery device according to any one of claims 1-5, characterized in that, A shielding cover is also provided outside the connecting terminal. The elastic shielding member surrounds the shielding cover, and both ends of the shielding cover protrude from the elastic shielding member along the first direction. The shielding cover is connected to the outer shell. The first direction is parallel to the center line of the elastic shield.

9. The battery device according to any one of claims 1-5, characterized in that, The ring width D2 of the elastic shielding component satisfies: 5mm ≤ D2 ≤ 8mm; and / or, The conductivity A of the elastic shielding element satisfies: A≥10 -4 S / m; and / or, The elastic modulus B of the elastic shielding component satisfies: B ≤ 5 MPa; and / or, The compression deformation ratio C of the elastic shielding component satisfies: 15%≤C≤25%.

10. The battery device according to any one of claims 1-5, characterized in that, The elastic shielding component is made of conductive silicone.

11. An electrical appliance, characterized in that, The electrical device includes a battery device as described in any one of claims 1-10, the battery device being used to provide electrical energy.

12. An energy storage device, characterized in that, The energy storage device includes a battery device as described in any one of claims 1-10, the battery device being used to store electrical energy.

Images