Battery device, power utilization device and energy storage device

Abstract

The invention 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 pressure relief part and at least one battery monomer, the at least one battery monomer is accommodated in the box body; the pressure relief part comprises a valve body, a cover body and a connecting piece, and the first end of the cover body is rotatably connected to the box body; the connecting piece comprises a fastening part and a driving part connected with the fastening part, the fastening part is movably connected to the second end of the cover body, and the driving part is used for driving the fastening part to rotate so as to enable the fastening part to be connected with the box body or enable the fastening part to be separated from the box body; under the condition that the fastening part is connected to the box body, the valve body is in a locked state; and under the condition that the fastening part is separated from the box body, the valve body is in an unlocking state capable of being separated from the box body. The fastening part can be driven to rotate through the driving part, so that locking and unlocking of the valve body are achieved, additional special tools are not needed, operation is easy and convenient, consumed time is short, and rapid disassembly and assembly can be achieved even in emergency situations.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and in particular to a battery device, a power utilization device, and an energy storage device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of society. Due to the advantages of energy saving and environmental protection, rechargeable batteries have gradually become an important part of the sustainable development of various industries.

[0003] In the related art, an explosion-proof valve is arranged on the box of the battery, which can automatically release pressure when the pressure in the box exceeds the set value, thereby improving the reliability of the battery. However, the explosion-proof valve in the related art is inconvenient to disassemble. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the background art. To this end, one object of the present application is to provide a battery device, a power utilization device, and an energy storage device to improve the inconvenience of disassembling the explosion-proof valve in the related art.

[0005] An embodiment of the first aspect of the present application provides a battery device, comprising: a box, a pressure relief part, and at least one battery monomer; the at least one battery monomer is contained in the box; the pressure relief part comprises a valve body, a cover body, and a connecting piece; the first end of the cover body is rotatably connected to the box; the connecting piece comprises a fastening part and a driving part connected to the fastening part; the fastening part is movably connected to the second end of the cover body, and the driving part is used to drive the fastening part to rotate, so as to connect the fastening part to the box or separate the fastening part from the box; in the case that the fastening part is connected to the box, the cover body can press the valve body against the box, so that the valve body is in a locked state; in the case that the fastening part is separated from the box, the cover body can rotate relative to the box to separate from the valve body, and the valve body is in an unlocked state that can be separated from the box.

[0006] In the technical solution of the embodiment of the present application, the driving part can drive the fastening part to rotate, thereby realizing the locking and unlocking of the valve body. No special tool is needed, the operation is simple and convenient, the time consumption is small, the quick disassembly can be realized even in an emergency, the operation efficiency, the maintenance efficiency, and the safety of the battery device are improved, and the structure is simple and easy to realize. In addition, since no special tool is needed, the pressure relief part can be applied to areas where the use of tools is limited, such as explosion-proof areas or complex working conditions of high temperature and high pressure, thereby improving the versatility. At the same time, only one fastening part needs to be disassembled to realize the disassembly of the valve body, which can further simplify the operation steps and improve the disassembly efficiency compared with the explosion-proof valve in the related art which needs to disassemble multiple screws.

[0007] In some embodiments, the drive unit is rotatably connected to the fastening unit, and the first axis of rotation of the drive unit relative to the fastening unit is perpendicular to the second axis of rotation of the fastening unit; when the fastening unit is connected to the housing, the drive unit can rotate relative to the fastening unit to press the cover against the housing through the drive unit, thereby putting the valve body in a locked state against the housing.

[0008] In this embodiment, the drive unit can rotate relative to the fastening unit, allowing it to rotate to a position convenient for applying force when the fastening unit needs to rotate, thereby improving the ease of operation of the fastening unit. Furthermore, when the fastening unit is already in a pre-tightened state connected to the housing, the rotation of the drive unit relative to the cover further secures the cover to the housing. This allows the valve body to be pre-tightened before further tightening during installation, facilitating timely adjustment of the valve body's position and improving the accuracy of valve body installation.

[0009] In some embodiments, the drive unit has a gripping section and a cam connected to one end of the gripping section. The cam is rotatably connected to the fastening section, and the wheel surface of the cam has a protruding section and a transition section connected to the protruding section. The gripping section is used to drive the cam to rotate relative to the fastening section, and when the transition section faces the cover, there is a gap between the transition section and the cover. The drive unit can drive the fastening section to rotate, and when the protruding section faces the cover, the protruding section can press the cover against the box.

[0010] In this embodiment, the grip section facilitates holding and improves operational convenience. By incorporating a cam and utilizing its transition section, the drive unit can rotate the fastening unit. The protruding section of the cam allows the drive unit to press the cover firmly against the housing. The structure is simple and easy to implement.

[0011] In some embodiments, the drive unit is provided with a protrusion, and the second end of the cover has a limiting groove. In the locked state, the protrusion engages with the limiting groove to limit the rotation of the drive unit about the second axis.

[0012] The engagement of the limiting groove and the protrusion restricts the rotation of the drive unit around the second axis, thereby limiting the rotation of the fastener, which in turn loosens the fastener and improves the reliability of the connection between the fastener and the housing.

[0013] In some embodiments, a protrusion is provided at one end of the grip section near the cam, a limiting groove penetrates the cover in a direction perpendicular to the cover, and the limiting groove also penetrates the cover in a direction away from the first end of the cover.

[0014] In this embodiment, by setting a limiting groove with openings on three sides, when the drive part rotates relative to the fastening part until the protruding section presses against the cover, the protrusion can smoothly enter the limiting groove and engage with it, thereby limiting the rotation of the gripping section around the second axis. This effectively improves the problem of the fastening part becoming loose due to misoperation of the drive part and enhances the safety of personnel and equipment.

[0015] In some embodiments, in the locked state, the grip section rests against the housing.

[0016] By setting the grip section in the locked state to rest against the housing, the volume of the battery pack during use can be reduced, thereby reducing the size and weight of the electrical device.

[0017] In some embodiments, the fastening part includes a fastening section and a connecting section connected to one end of the fastening section, a driving part is connected to the connecting section, and a limiting part is provided on the peripheral side of the fastening section; the fastening section includes a first sub-segment located between the limiting part and the connecting section and a second sub-segment located at the end of the limiting part away from the connecting section, the second sub-segment is used to connect with the housing, and the cover is movable relative to the first sub-segment between the limiting part and the connecting section.

[0018] This embodiment achieves a movable connection between the cover and the fastening part by setting a fastening section, a limiting part, and a connecting section. The cover, the fastening part, and the driving part can be an integral component that will not detach from each other, which is convenient for storage and use. At the same time, it also facilitates the installation of the driving part.

[0019] In some embodiments, the cover has a mounting hole, which has a first hole and a second hole connected sequentially in a direction perpendicular to the cover. A first segment passes through the first hole, and there is a gap between the hole wall of the first hole and the first segment. A limiting portion is accommodated in the second hole.

[0020] In this embodiment, by providing a first hole and a second hole in the cover, and providing a first segment in the first hole, the cover can be moved relative to the fastening part. The second hole can be used to accommodate the limiting part, so that the cover can be set closer to the box body in the locked state, so as to press the valve body and reduce the volume of the battery device.

[0021] In some embodiments, the connecting segment and the fastening segment are arranged perpendicularly, and the two ends of the connecting segment protrude from the peripheral side surface of the fastening segment, and the driving part is rotatably connected to the two ends of the connecting segment.

[0022] By having both ends of the connecting section protrude from the fastening section, the connecting section can limit the movement of the cover relative to the fastening section. At the same time, it facilitates the rotatable connection between the connecting section and the drive unit, and makes the force between the drive unit and the connecting section more even, thus improving the service life.

[0023] In some embodiments, the housing has an installation port, the valve body includes a main body installed in the installation port and at least one ear protruding from the edge of the main body; the cover has a receiving hole for exposing the main body, and the cover also has at least one mating groove, each mating groove engaging with an ear in the locked state to press the ear against the housing.

[0024] The valve body is installed by setting a mating groove in the cover and an ear in the valve body. The valve body is installed by the engagement of the mating groove and the ear. The structure is simple and easy to implement.

[0025] In some embodiments, the first end and the second end of the cover are the two ends of the cover along the first direction, and the main body is provided with an ear at each end along the second direction perpendicular to the first direction, and the cover is provided with a mating groove at each end along the second direction.

[0026] In this embodiment, mating grooves can be provided on both sides of the cover. While reducing the groove area, the force on both sides of the valve body can be more even, which is beneficial to improving the connection reliability of the valve body and the strength of the cover.

[0027] In some embodiments, the ear has a first arcuate surface facing the cover, and the mating groove has a second arcuate surface that matches the shape of the first arcuate surface.

[0028] When the groove and ear engage, the presence of the first and second arc surfaces allows for automatic adjustment of position and alignment even if slight misalignment occurs during installation. This achieves automatic centering of the valve body and the cover's receiving hole, thereby enabling the valve body to automatically align with the mounting opening of the housing, improving the accuracy of valve body installation, and enhancing sealing and connection stability.

[0029] In some embodiments, the housing is provided with a bracket, the bracket having a first hinge hole, and the first end of the cover is provided with a second hinge hole, with a pin hinged in the first hinge hole and the second hinge hole.

[0030] By setting a first hinge hole, a second hinge hole, and a pin, a rotatable connection between the cover and the bracket can be achieved, thereby enabling the cover to rotate relative to the box. The structure is simple and easy to implement.

[0031] In some embodiments, the housing is provided with a threaded hole, and the fastener is screwed into the threaded hole.

[0032] The threaded connection allows for quick connection between the fastener and the housing. Furthermore, the pressure relief unit provided in this embodiment only requires one fastener to connect with the housing, making assembly and disassembly faster.

[0033] 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.

[0034] 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.

[0035] 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

[0036] 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.

[0037] Figure 1 Schematic diagrams of the structure of the aircraft provided in some embodiments of this application; Figure 2 This is an exploded view of the battery device provided in some embodiments of this application; Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application; Figure 4 This is a schematic diagram of the installation of the pressure relief section provided in an embodiment of this application; Figure 5 for Figure 4 Top view; Figure 6 for Figure 4 The front view; Figure 7 for Figure 4 A schematic diagram of the decomposed structure; Figure 8 for Figure 7 Structural diagram of the middle cover and connecting parts; Figure 9 for Figure 8 A schematic diagram of the decomposed structure; Figure 10 for Figure 5 Enlarged view of section AA; Figure 11 for Figure 6 Enlarged view of section BB; Figure 12 for Figure 4 A schematic diagram showing the drive unit rotating relative to the fastener. Figure 13 for Figure 12 The front view; Figure 14 for Figure 12 A schematic diagram showing the drive unit rotating the fastening unit; Figure 15 for Figure 14 The front view.

[0038] Explanation of reference numerals in the attached figures: Aircraft 1000; Battery unit 100, controller 200, motor 300; Battery cell assembly 10, battery cell 11, end cap 12, housing 13, electrode assembly 14; Box 20, first part 21, second part 22, mounting port 23, bracket 24, first hinge hole 241, pin 25, nut 26, threaded hole 261; Pressure relief part 30, valve body 31, main body 311, ear part 312, first arc surface 313, cover 32, connector 33; Limiting groove 410, mounting hole 420, first hole 421, second hole 422, receiving hole 430, mating groove 440, second arc surface 441, second hinge hole 450; Fastening part 500, fastening section 510, first sub-section 511, second sub-section 512, connecting section 520, limiting part 530; Drive section 600, grip section 610, cam 620, protrusion section 621, transition section 622, protrusion 630. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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).

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In industrial production and equipment operation, explosion-proof valves serve as critical safety devices, used to automatically release pressure when the system is over-pressurized, preventing equipment damage or safety accidents.

[0049] In related technologies, explosion-proof valves are installed on the battery casing. However, these valves are typically secured with threaded connections or bolts, requiring tools for installation and removal. Maintenance and replacement of the explosion-proof valves usually necessitate the use of specialized tools such as wrenches and screwdrivers, which is inconvenient. Furthermore, since explosion-proof valves typically require multiple screws to be installed in the casing, each screw must be installed or removed individually, making the process cumbersome and time-consuming, potentially impacting equipment operating and maintenance efficiency.

[0050] Furthermore, due to the inconvenience of disassembly and assembly, this method may affect timely equipment maintenance in emergencies and even pose safety hazards. In addition, some industrial environments have restrictions on the use of tools (such as explosion-proof areas), which further limits the application of explosion-proof valves.

[0051] 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 pressure relief section, and at least one battery cell; at least one battery cell is housed within the housing; the pressure relief section includes a valve body, a cover, and a connector, with a first end of the cover rotatably connected to the housing; the connector includes a fastening section and a driving section connected to the fastening section, the fastening section being movably connected to a second end of the cover, and the driving section being used to drive the fastening section to rotate, thereby connecting the fastening section to the housing or separating the fastening section from the housing; when the fastening section is connected to the housing, the cover can press the valve body against the housing, thereby locking the valve body; when the fastening section is separated from the housing, the cover can rotate relative to the housing to separate from the valve body, thereby unlocking the valve body and allowing it to be separated from the housing. In this embodiment, the driving unit can drive the fastening unit to rotate, thereby locking and unlocking the valve body. No additional special tools are required, making operation simple, convenient, and time-efficient. Even in emergency situations, quick assembly and disassembly can be achieved, improving the operating efficiency, maintenance efficiency, and safety of the battery device. Furthermore, since no special tools are needed, the pressure relief unit can also be used in areas where tool use is restricted, enhancing its versatility.

[0052] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 various battery devices with automatic pressure relief capabilities and electrical devices using battery devices. However, for the sake of brevity, the following embodiments will use an aircraft as an example of an electrical device.

[0057] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of an aircraft provided in some embodiments of this application. The aircraft 1000 can be a drone or other flying device. A battery device 100 is disposed internally in the aircraft 1000, and the battery device 100 can be located at the bottom, head, or tail of the aircraft 1000. The battery device 100 can be used to power the aircraft 1000; for example, the battery device 100 can serve as the operating power source for the aircraft 1000. The aircraft 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 aircraft 1000 during startup, navigation, and flight.

[0058] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the aircraft 1000, but also as the driving power source for the aircraft 1000, replacing or partially replacing fuel or natural gas to provide driving power for the aircraft 1000.

[0059] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0060] 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.

[0061] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0062] 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.

[0063] 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 individual battery cells 10, with the individual battery cells 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 combinations of simple cuboids, cylinders, or spheres. The material of the housing 20 can be an alloy such as aluminum alloy or iron alloy, a polymer such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] Figure 4 This is a schematic diagram of the installation of the pressure relief section provided in an embodiment of this application; Figure 5 for Figure 4 Top view; Figure 6 for Figure 4 The front view; Figure 7 for Figure 4 A schematic diagram of the decomposed structure; Figure 8 for Figure 7 Structural diagram of the middle cover and connecting parts; Figure 9 for Figure 8 A schematic diagram of the decomposed structure; Figure 10 for Figure 5 Enlarged view of section AA; Figure 11 for Figure 6 Enlarged view of section BB; Figure 12 for Figure 4 A schematic diagram showing the drive unit rotating relative to the fastener. Figure 13 for Figure 12 The front view; Figure 14 for Figure 12 A schematic diagram showing the drive unit rotating the fastening unit; Figure 15 for Figure 14 The front view.

[0075] Please refer to Figures 4 to 15This application provides a battery device 100, including: a housing 20, a pressure relief section 30, and at least one battery cell 11; the at least one battery cell 11 is housed in the housing 20; the pressure relief section 30 includes a valve body 31, a cover 32, and a connector 33, the first end of the cover 32 being rotatably connected to the housing 20; the connector 33 includes a fastening part 500 and a driving part 600 connected to the fastening part 500, the fastening part 500 being movably connected to the second end of the cover 32, and the driving part 600 being... Part 600 is used to drive the fastening part 500 to rotate, so that the fastening part 500 is connected to the housing 20 or separated from the housing 20; when the fastening part 500 is connected to the housing 20, the cover 32 can press the valve body 31 against the housing 20, so that the valve body 31 is in a locked state; when the fastening part 500 is separated from the housing 20, the cover 32 can rotate relative to the housing 20 to separate from the valve body 31, and put the valve body 31 in an unlocked state that can be separated from the housing 20.

[0076] The housing 20 may be provided with an installation port, and the pressure relief part 30 may be installed in the installation port 23. The pressure relief part 30 may include a valve body 31, a cover 32, and a connector 33. The valve body 31 may be installed in the installation port and may be a valve body structure with pressure relief function, such as the valve body of an explosion-proof valve. When the pressure inside the housing 20 exceeds the opening pressure of the valve body 31, the valve body 31 may open to connect the inside of the housing with the external environment, thereby releasing the pressure inside the housing and achieving automatic pressure relief.

[0077] The cover 32 can be used to press the valve body 31 against the housing 20 to achieve a fixed connection between the valve body 31 and the housing 20. It can be understood that the cover 32 can be made of materials such as plastic or metal, and its shape can be various, such as a strip or a ring. The cover 32 can be used to press down on the edge of the valve body 31 to achieve the connection between the valve body 31 and the housing 20. In addition, the cover 32 can also expose the pressure relief port of the valve body 31 so that the valve body 31 can automatically release pressure.

[0078] The cover 32 may have a first end and a second end, which may be the two ends of the cover 32 along a first direction. Figure 5 The left and right directions in the middle can, of course, also be... Figure 5 The vertical direction, or other straight lines.

[0079] The first end of the cover 32 is rotatably connected to the box body. For example, the cover 32 can be hinged to the box body. There are various hinge methods. For example, the box body can be provided with a hinge hole, and the cover 32 can be provided with a hinge shaft. The hinge shaft can be hinged in the hinge hole.

[0080] According to some embodiments of this application, such as Figure 8 and Figure 9As shown, the housing 20 is provided with a bracket 24, the bracket 24 has a first hinge hole 241, the first end of the cover 32 is provided with a second hinge hole 450, and a pin 25 is hinged in the first hinge hole 241 and the second hinge hole 450.

[0081] The bracket 24 can be attached to the housing 20 by screwing, welding, or riveting. The first hinge hole 241 can be perpendicular to the first direction. The first end of the cover 32 can also be provided with a second hinge hole 450. The first hinge hole 241, the second hinge hole 450, and the pin 25 can be coaxially arranged. The first hinge hole and the second hinge hole can be cylindrical holes, and the pin 25 can be a cylindrical structure that can pass through the first hinge hole 241 and the second hinge hole 450 to achieve a rotatable connection between the cover and the bracket.

[0082] The number of first hinge holes 241 and second hinge holes 450 can be one or more. For example, there can be two first hinge holes 241, which can be located at both ends of the second hinge hole 450. Alternatively, there can be one first hinge hole and two second hinge holes 450, which can be located at both ends of the first hinge hole. The specific configuration can be determined according to the actual situation.

[0083] By setting a first hinge hole, a second hinge hole, and a pin, a rotatable connection between the cover and the bracket can be achieved, thereby enabling the cover to rotate relative to the box. The structure is simple and easy to implement.

[0084] A connector 33 may be provided at the second end of the cover 32. The connector 33 may include a fastening part 500 and a driving part 600. The fastening part 500 can be movably connected to the second end of the cover 32. It can be understood that a movable connection means that the fastening part 500 can move relative to the cover 32 within a certain range, such as rotating or moving, but the fastening part 500 will not detach from the cover 32. For example, the second end of the cover 32 may be provided with a mounting hole 420. The fastening part 500 can pass through the mounting hole 420, and there may be a gap between the peripheral surface of the fastening part 500 and the inner surface of the mounting hole 420, thereby allowing the fastening part 500 to move relative to the cover 32. In addition, the fastening part 500 or the cover 32 may also be provided with limiting protrusions or claws to prevent them from detaching.

[0085] The drive unit 600 can be connected to the fastening unit 500, for example, it can be fixedly connected or rotatably connected. The drive unit 600 can be a handle or handwheel, etc., which can be used to drive the fastening unit 20 to rotate. Rotation can be understood as the rotation of the fastening unit 500 around its own axis, for example, Figure 9 and Figure 13 The image shows that the axis of the fastening part 500 is in the second rotation direction S2, and the operation of the drive part (along the direction S2) is controlled by the drive part. Figure 13Rotating the arc-shaped arrow on the right can cause the fastening part 500 to rotate around the second axis in the direction S2, so as to connect or separate the fastening part 500 and the housing. It can be understood that the housing 20 can also be provided with a mating part that can be connected to the fastening part 500, so that the fastening part 500 can be fixedly connected to the mating part when it rotates.

[0086] According to some embodiments of this application, the housing 20 is provided with a threaded hole 261, and the fastening part 500 is screwed into the threaded hole 261.

[0087] The fastening part 500 can be a bolt or screw, etc. The driving part 600 can drive the fastening part 500 to rotate, so as to realize the screw connection between the fastening part 500 and the threaded hole 261.

[0088] In some embodiments, the housing 20 may have a nut 26 pre-embedded in it, and the threaded hole 261 may be a threaded hole in the nut.

[0089] The threaded connection allows for quick connection between the fastener and the housing. Furthermore, the pressure relief unit provided in this embodiment only requires one fastener to connect with the housing, making assembly and disassembly faster.

[0090] In this embodiment, the valve body 31 can have a locked state and an unlocked state. In the locked state, such as... Figure 4 and Figure 9 As shown, the fastening part 500 is connected to the housing 20, and the cover 32 presses the valve body 31 against the housing 20, so that the valve body 31 is installed on the housing. In the unlocked state, as... Figure 14 and Figure 15 When the fastener 500 separates from the housing 20, the cover 32 can rotate freely relative to the housing (e.g., along the...). Figure 13 The direction of the arc-shaped arrow on the left is rotated to Figure 14 and Figure 15 (The valve body 31 can be in an unrestrained state, thus allowing it to be removed from the mounting port of the housing).

[0091] When it is necessary to install the valve body to put it in a locked state, such as Figure 14 First, place the valve body 31 on the mounting port of the housing 20, then rotate the cover 32 so that the cover is in the correct position. Figure 4 The state shown is that the fastener is in contact with the valve body 31. Furthermore, since the fastening part can move relative to the cover, a portion of the fastening part 500 can be smoothly inserted into the threaded hole, achieving alignment between the fastening part 500 and the threaded hole. Next, the drive unit 600 can be rotated to drive the fastening part 500 to rotate, causing the fastening part 500 to be threadedly fastened into the threaded hole (e.g., ...). Figure 9This allows the fastening part 500 to be connected to the housing 20. In this embodiment, the second end of the cover can be fastened to the housing 20 by the fastening part 500, so that the valve body is in a locked state.

[0092] When it is necessary to disassemble the valve body to put it in the unlocked state, such as Figure 5 and Figure 9 First, the drive unit 600 can be rotated, which will cause the fastening unit 500 to rotate, thereby releasing the connection between the fastening unit 500 and the housing 20. Then, the cover 32 can be rotated to release it from the housing 20. Figure 5 The state shown is rotated to Figure 14 In this state, since the fastening part can move relative to the cover, the fastening part 500 can also rotate smoothly with the cover, thus separating from the threaded hole. At this time, the valve body 31 is in a state without the cover pressing it, and it can be easily removed from the mounting port of the housing.

[0093] The battery device provided in this embodiment uses a drive unit to rotate the fastening part, thereby locking and unlocking the valve body. No additional special tools are required, making operation simple, convenient, and time-efficient. Even in emergencies, rapid assembly and disassembly can be achieved, improving the battery device's operational efficiency, maintenance efficiency, and safety. Furthermore, its simple structure makes it easy to implement. Since no special tools are needed, the pressure relief unit can also be used in areas where tool use is restricted, such as explosion-proof areas or complex conditions like high temperature and high pressure, enhancing its versatility. Simultaneously, the valve body can be disassembled and assembled by removing only one fastening part, further simplifying the operation and improving efficiency compared to explosion-proof valves in related technologies that require the removal and assembly of multiple screws.

[0094] It is understood that in some embodiments, the battery device 100 can be applied to the aircraft 1000. Since the aircraft needs to fly in the air, its weight has a significant impact on it. In this embodiment, to reduce the weight of the aircraft, the battery device may not have a cooling structure such as a water-cooling plate. After the aircraft 1000 has been flying for a period of time, the battery device 100 can be removed from the aircraft, and then the pressure relief part 30 can be removed from the housing 20. Air can then be introduced into the housing of the battery device through the mounting port on the housing to air-cool the battery device. It is understood that in this scenario, the pressure relief part 30 needs to be frequently disassembled and reassembled. The battery device provided in this embodiment is particularly designed for scenarios involving frequent disassembly and reassembly of the pressure relief part, greatly saving time and improving disassembly and reassembly efficiency.

[0095] The battery device with a quickly detachable pressure relief section provided in this embodiment is applicable to multiple industries such as chemical, petroleum, power, and pharmaceutical, and has significant advantages, especially in scenarios requiring frequent maintenance or emergency operation. Furthermore, with the improvement of industrial automation, it may become an industry standard configuration, enhancing the intelligence, efficiency, and safety of industrial equipment.

[0096] According to some embodiments of this application, the drive unit 600 is rotatably connected to the fastening unit 500, and the first rotation axis direction S1 of the drive unit 600 relative to the fastening unit 500 is perpendicular to the second rotation axis direction S2 of the fastening unit's rotation. When the fastening unit 500 is connected to the housing 20, the drive unit 600 can rotate relative to the fastening unit 500 to press the cover 32 against the housing 20, thereby putting the valve body 31 in a locked state against the housing 20.

[0097] In this embodiment, the driving part 600 is rotatably connected to the fastening part 500, such as... Figure 8 and Figure 9 As shown, the first rotation axis direction S1 is the axial direction of relative rotation between the driving part 600 and the fastening part 500, and the second rotation axis direction S2 is the rotation direction of the fastening part 500. The first rotation axis direction S1 and the second rotation axis direction S2 can be perpendicular to each other.

[0098] It is understandable that the drive unit 600 can rotate relative to the fastening unit 500, for example, it can... Figure 6 and Figure 12 Switching between two states, for example in Figure 6 In this state, rotating the drive unit 600 in the direction of the arc arrow will put it in a certain position. Figure 12 The state. Taking the drive unit 600 as an example (the handle in the diagram), when the drive unit 600 rotates to... Figure 12 and Figure 13 The axis shown is approximately coaxial with the second axis of rotation S2, and rotates about the second axis of rotation S2 via the drive unit 600. Figure 13 (The direction of the arc-shaped arrow on the right) can drive the fastening part 500 to rotate, thereby realizing the connection or separation of the fastening part 500 from the housing. During this process, the fastening part 500 and the driving part 600 can rotate as a whole around the second axis direction S2, and there may be no relative movement between the two.

[0099] In some embodiments, with Figure 13 The image shows an example of fastener 500 being screwed to the housing. It can be understood that... Figure 13 In the pre-tightened state shown, the fastening part 500 does not directly press the cover onto the housing; that is, the cover is not completely fixed to the housing, and the cover 32 still has a small range of movement. Therefore, the valve body is not completely pressed against the housing. Next, the drive part 600 can be operated to rotate relative to the fastening part 500 about the first rotation axis direction S1. Figure 6 When the drive unit 600 is approximately parallel to the housing 20, the drive unit 600 can apply pressure to the cover, allowing the cover 32 to be completely fixed to the housing 20. This allows the valve body to be pressed against the housing, and the valve body can be in a position where...Figures 4 to 6 The locked state is shown.

[0100] There are several ways for the drive unit 600 to press the cover. For example, the drive unit can be provided with a first protrusion and the box can be provided with a first groove. By rotating the drive unit 600 around the first axis, the first protrusion and the first groove can be engaged, so that the cover can be clamped between the box and the drive unit.

[0101] In this embodiment, the drive unit can rotate relative to the fastening unit, allowing it to rotate to a position convenient for applying force when the fastening unit needs to rotate, thereby improving the ease of operation of the fastening unit. Furthermore, when the fastening unit is already in a pre-tightened state connected to the housing, the rotation of the drive unit relative to the cover further secures the cover to the housing. This allows the valve body to be pre-tightened before further tightening during installation, facilitating timely adjustment of the valve body's position and improving the accuracy of valve body installation.

[0102] According to some embodiments of this application, such as Figure 6 , Figure 8 and Figure 13 As shown, the drive unit 600 has a gripping section 610 and a cam 620 connected to one end of the gripping section 610. The cam 620 is rotatably connected to the fastening part 500, and the wheel surface of the cam 620 has a protruding section 621 and a transition section 622 connected to the protruding section 621. The gripping section 610 is used to drive the cam 620 to rotate relative to the fastening part 500. When the transition section 622 faces the cover 32, there is a gap between the transition section 622 and the cover 32. The drive unit 600 can drive the fastening part 500 to rotate. When the protruding section 621 faces the cover 32, the protruding section 621 can press the cover 32 against the box 20.

[0103] In this embodiment, the drive unit 600 may include a grip section 610 and a cam 620. The grip section 610 may be an elongated structure or the like, which facilitates gripping and improves ease of operation.

[0104] The cam 620 can be disposed at one end of the drive unit 600, and the cam 620 can be hinged to the fastening part 500, thereby realizing the rotation of the drive unit 600 relative to the fastening part 500.

[0105] It can be understood that the cam 620 can be a structure with the first rotation axis direction S1 as its axis, and its wheel surface is not a cylindrical surface coaxial with the first rotation axis direction S1. The wheel surface of the cam 620 can have a transition section 622 with a small radius and a protruding section 621 with a large radius. The protruding section 621 can protrude outward from the transition section 622 along the circumference of the cam 620, such as... Figure 6In the process, the wheel surface of the cam 620 can be roughly divided into three parts: one part can be connected to the grip section 610, another part can be a protruding section 621 (within the dashed line in the figure) that is relatively far from the first axis of rotation, and the remaining part can be a transition section 622 that is relatively far from the first axis of rotation. The protruding section and the transition section can be smoothly transitioned.

[0106] It is understandable that the drive unit 600 rotates to Figure 13 In the indicated state, the transition section 622 can generally face the cover 32, and there can still be a gap between the transition section 622 and the cover 32. The cover is not completely fastened to the box. At this time, the drive unit 600 can drive the fastening part to rotate. When the drive unit rotates to... Figure 6 In the state shown, the protruding section 621 can face the cover 32, and the protruding section 621 can press the cover 32, so that the cover can be pressed tightly onto the box, thereby achieving the fastening of the valve body.

[0107] In this embodiment, the grip section facilitates holding and improves operational convenience. By incorporating a cam and utilizing its transition section, the drive unit can rotate the fastening unit. The protruding section of the cam allows the drive unit to press the cover firmly against the housing. The structure is simple and easy to implement.

[0108] According to some embodiments of this application, such as Figure 12 The drive unit 600 is provided with a protrusion 630, and the second end of the cover 32 has a limiting groove 410. In the locked state, the protrusion 630 is engaged with the limiting groove 410 to limit the rotation of the drive unit 600 around the second axis direction S2.

[0109] In this embodiment, the limiting groove 410 can be provided on the surface of the cover away from the box body, and the protrusion 630 can be provided on the surface of the drive part 600 facing the cover 32 in the locked state, for example, on... Figure 6 The bottom surface of the grip section 610 in the shown state.

[0110] The protrusion 630 can have various shapes, such as cylindrical or arc-shaped, and the limiting groove 410 can have the same shape as the protrusion 630, thus enabling the protrusion 630 and the limiting groove 410 to engage. It can be understood that while the protruding section presses against the cover, the limiting groove can engage with the protrusion, that is, when... Figure 6 In the locked state shown, the protrusion can engage with the limiting groove.

[0111] The engagement of the limiting groove and the protrusion restricts the rotation of the drive unit around the second axis, thereby limiting the rotation of the fastener, which in turn loosens the fastener and improves the reliability of the connection between the fastener and the housing.

[0112] According to some embodiments of this application, such as Figure 9As shown, the protrusion 630 is disposed at one end of the grip section 610 near the cam 620, the limiting groove 410 penetrates the cover 32 in a direction perpendicular to the cover 32, and the limiting groove 410 also penetrates the cover 32 in a direction away from the first end of the cover 32.

[0113] The protrusion 630 can be a cuboid structure, which can be located at one end of the grip section 610 near the cam 620. In the locked state, the protrusion 630 can protrude from the bottom surface of the grip section 610 towards the housing. Figure 6 ).

[0114] The limiting groove 410 can be a structure with openings on three sides, such as... Figure 9 As shown, the limiting groove 410 is provided at the second end of the cover 32, and it can penetrate the upper and lower surfaces of the cover in a direction perpendicular to the cover. In addition, the limiting groove 410 can also penetrate the side of the cover in a direction away from the first end of the cover.

[0115] In this embodiment, by setting a limiting groove with openings on three sides, when the drive part rotates relative to the fastening part until the protruding section presses against the cover, the protrusion can smoothly enter the limiting groove and engage with it, thereby limiting the rotation of the gripping section around the second axis. This effectively improves the problem of the fastening part becoming loose due to misoperation of the drive part and enhances the safety of personnel and equipment.

[0116] According to some embodiments of this application, such as Figure 4 In the locked state, the grip section 610 is attached to the housing 20.

[0117] It is understood that in this embodiment, the gripping segment 610 can be extended into a strip shape. Figure 12 In the shown state, the gripping section 610 can be approximately aligned with the direction of the second rotating axis, thereby facilitating the rotation of the fastening part. And... Figures 5 In the locked state shown, the grip section can be rotated to rest against the housing 20. Resting against means touching or coming close to, so that the grip section is approximately parallel to the surface of the housing 20 where the valve body is located.

[0118] By setting the grip section in the locked state to rest against the housing, the volume of the battery pack during use can be reduced, thereby reducing the size and weight of the electrical device.

[0119] According to some embodiments of this application, such as Figures 9 to 11As shown, the fastening part 500 includes a fastening section 510 and a connecting section 520 connected to one end of the fastening section 510. The driving part 600 is connected to the connecting section 520. A limiting part 530 is provided protruding from the peripheral side of the fastening section 510. The fastening section 510 includes a first sub-segment 511 located between the limiting part 530 and the connecting section 520 and a second sub-segment 512 located at the end of the limiting part 530 away from the connecting section 520. The second sub-segment 512 is used to connect with the housing 20, and the cover 32 can move relative to the first sub-segment 511 between the limiting part 530 and the connecting section 520.

[0120] In this embodiment, the fastening part 500 may include a fastening section 510 and a connecting section 520. The axis of the fastening section 510 may be intersected with the axis of the connecting section 520. For example, the axis of the fastening section 510 may be a second rotation direction S2, and the axis of the connecting section 520 may be a first rotation direction S1, and the two are perpendicular to each other.

[0121] One end of the fastening section 510 can be connected to the connecting section 520. For example, the fastening section 510 can be connected to the middle of the connecting section 520, and the two can be roughly T-shaped. The driving part 600 can be connected to the connecting section 520. For example, the driving part 600 can be rotatably connected to the connecting section 520.

[0122] The peripheral side of the fastening section 510 may be provided with a limiting part 530. The limiting part 530 may be a block-shaped or dot-shaped protrusion protruding from its peripheral side, or it may be an annular protrusion surrounding the fastening section 510.

[0123] The fastening section 510 may include a first sub-section 511 and a second sub-section 512. The axes of the first sub-section 511 and the second sub-section 512 are both in the first rotation direction S1. The first sub-section 511 may be located between the limiting part 530 and the connecting section 520, and the second sub-section 512 may be located at the end of the limiting part 530 away from the connecting section 520.

[0124] The second segment 512 can be used to connect with the housing, for example, the second segment 512 can be provided with external threads for screwing into the housing. The cover 32 can be sleeved on the first segment 511. In addition, the connecting segment 520 and the limiting part 530 can limit the movement of the cover 32 relative to the first segment 511, that is, the cover 32 can move relative to the first segment 511 between the connecting segment 520 and the limiting part 530.

[0125] This embodiment achieves a movable connection between the cover and the fastening part by setting a fastening section, a limiting part, and a connecting section. The cover, the fastening part, and the driving part can be an integral component that will not detach from each other, which is convenient for storage and use. At the same time, it also facilitates the installation of the driving part.

[0126] According to some embodiments of this application, the cover 32 has a mounting hole 420, the mounting hole 420 has a first hole 421 and a second hole 422 connected sequentially in a direction perpendicular to the cover 32, the first segment 511 passes through the first hole 421, and there is a gap between the hole wall of the first hole 421 and the first segment 511, and the limiting part 530 is accommodated in the second hole 422.

[0127] The mounting hole 420 may include a first hole 421 and a second hole 422, which can communicate in a direction perpendicular to the cover. The cross-sectional area of ​​the first hole 421 is smaller than that of the second hole 422. The first segment 511 can pass through the first hole 421, and there is a gap between them. The outer contour cross-sectional area of ​​the limiting part 530 can be larger than that of the first hole, that is, the hole wall portion of the first hole 421 can move relative to the fastening part between the limiting part and the connecting segment.

[0128] The cross-sectional area of ​​the second hole 422 can be larger than the outer contour cross-sectional area of ​​the limiting part 530, so that the limiting part 530 can be accommodated in the second hole of the cover, so that the cover can be set closer to the box in the locked state, so as to press the valve body.

[0129] In this embodiment, by providing a first hole and a second hole in the cover, and providing a first segment in the first hole, the cover can be moved relative to the fastening part. The second hole can be used to accommodate the limiting part, so that the cover can be set closer to the box body in the locked state, so as to press the valve body and reduce the volume of the battery device.

[0130] According to some embodiments of this application, the connecting segment 520 is arranged perpendicularly to the fastening segment 510, and the two ends of the connecting segment 520 protrude from the peripheral side surface of the fastening segment 510, and the driving part 600 is rotatably connected to the two ends of the connecting segment 520.

[0131] In this embodiment, the axis of the fastening section 510 can be the second rotation direction S2, and the axis of the connecting section 520 can be the first rotation direction S1, and the two are perpendicular to each other.

[0132] The fastening section 510 can be connected to the middle of the connecting section 520, and the two can be roughly T-shaped. The driving section 600 can be connected to the connecting section 520.

[0133] For example, the drive unit 600 may have two connecting ears, and the two ends of the connecting segment 520 protruding from the fastening segment 510 may be respectively provided with the two connecting ears to realize the hinge connection between the drive unit and the connecting segment 520. In some embodiments, the drive unit 600 includes two cams spaced apart along the first rotation axis, and the two cams are respectively hinged to the two ends of the connecting segment.

[0134] By having both ends of the connecting section protrude from the fastening section, the connecting section can limit the movement of the cover relative to the fastening section. At the same time, it facilitates the rotatable connection between the connecting section and the drive unit, and makes the force between the drive unit and the connecting section more even, thus improving the service life.

[0135] According to some embodiments of this application, please refer to Figure 7 and Figure 9 The housing 20 has a mounting port 23, and the valve body 31 includes a main body 311 mounted in the mounting port 23 and at least one ear 312 protruding from the edge of the main body 311; the cover 32 has a receiving hole 430 for exposing the main body 311, and the cover 32 also has at least one mating groove 440. In the locked state, each mating groove 440 engages with an ear 312 to press the ear 312 against the housing 20.

[0136] The main body 311 of the valve body 31 can be the main part of the valve body 31 to realize the pressure relief structure, and it can be installed in the mounting port 23. The ear 312 can be the protruding part of the edge 31 of the valve body, and the number of ears can be one or more, for example Figure 7 The diagram shows a valve body with two ears 312. Of course, the ears 312 can also be an annular structure arranged around the valve body 31, or there can be more ears 312.

[0137] The cover 32 may have a receiving hole 430 at its center, which can be used to expose the main body 311. The cover 32 may also be provided with a mating groove 440, which can be connected to the ear 312 in shape, thereby pressing the ear 312 against the housing through the mating groove 440, thus realizing the installation of the valve body. The mating groove and the ear can be engaged one-to-one, and their shapes can be various, such as square, arc, etc.

[0138] The valve body is installed by setting a mating groove in the cover and an ear in the valve body. The valve body is installed by the engagement of the mating groove and the ear. The structure is simple and easy to implement.

[0139] According to some embodiments of this application, the first end and the second end of the cover 32 are the two ends of the cover along the first direction, the main body 311 is provided with an ear at each end along the second direction perpendicular to the first direction, and the cover 32 is provided with a mating groove 440 at each end along the second direction.

[0140] In this embodiment, as Figure 5 As shown, the first direction can be the left-right direction in the figure, and the second direction can be the up-down direction in the figure. A mating groove 440 can be provided at each end of the cover along the second direction. The mating groove can be provided on the bottom surface of the cover facing the box in the locked state, and the mating groove can penetrate the cover 32 along the second direction.

[0141] The main body 311 may also be provided with two ears at both ends along the second direction, and the ears may extend along the second direction. Each ear can engage with a mating groove.

[0142] In this embodiment, mating grooves can be provided on both sides of the cover. While reducing the groove area, the force on both sides of the valve body can be more even, which is beneficial to improving the connection reliability of the valve body and the strength of the cover.

[0143] According to some embodiments of this application, the ear portion 312 has a first arcuate surface 313 facing the cover 32, and the mating groove 440 has a second arcuate surface 441 that matches the shape of the first arcuate surface 313.

[0144] like Figure 7 As shown, the ear portion 312, facing away from the upper surface of the housing, can be a first arc surface 313, which can be part of a cylindrical arc surface. The distance between the first arc surface 313 and the lower surface of the ear portion 312 facing the housing first increases and then decreases along the first direction. Furthermore, the shape and size of the ear portion remain consistent in the cross-section perpendicular to the second direction.

[0145] Similarly, the mating groove 440 can have a second arcuate surface 441 facing the housing in the locked state. The second arcuate surface 441 can also be part of a cylindrical arcuate surface, and its shape can be consistent with the first arcuate surface 313. The second arcuate surface 441 can be matched with the shape of the first arcuate surface 313. When there is a deviation between the valve body installation position and the installation port, the position of the valve body can be adjusted accordingly through the matching of the first arcuate surface 313 and the second arcuate surface 441, so that the receiving hole is aligned with the axis of the main body, and thus the axis of the main body is aligned with the axis of the installation port.

[0146] When the groove and ear engage, the presence of the first and second arc surfaces allows for automatic adjustment of position and alignment even if slight misalignment occurs during installation. This achieves automatic centering of the valve body and the cover's receiving hole, thereby enabling the valve body to automatically align with the mounting opening of the housing, improving the accuracy of valve body installation, and enhancing sealing and connection stability.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] In some embodiments, please refer to Figures 4 to 15 This application provides a battery device 100, including: a housing 20, a pressure relief section 30, and at least one battery cell 11; the at least one battery cell 11 is housed in the housing 20; the pressure relief section 30 includes a valve body 31, a cover 32, and a connector 33, the first end of the cover 32 being rotatably connected to the housing 20; the connector 33 includes a fastening part 500 and a driving part 600, the fastening part 500 being movably connected to the second end of the cover 32, and the driving part 600 being rotatably connected to the fastening part 500 and driving... The first rotation axis direction S1 of the part 600 relative to the fastening part 500 is perpendicular to the second rotation axis direction S2 of the fastening part's rotation; and the driving part 600 is used to drive the fastening part 500 to rotate, so that the fastening part 500 is connected to the housing 20, or to separate the fastening part 500 from the housing 20; when the fastening part 500 is connected to the housing 20, the driving part 600 can rotate relative to the fastening part 500, so that the cover 32 is pressed against the housing 20 by the driving part 600, thereby putting the valve body 31 in a locked state pressed against the housing 20. When the fastening part 500 is separated from the housing 20, the cover 32 can rotate relative to the housing 20 to separate from the valve body 31, and put the valve body 31 in an unlocked state that can be separated from the housing 20.

[0154] The battery device provided in this embodiment allows the drive unit to rotate relative to the fastening unit and also drives the fastening unit to rotate on its own axis. This allows the drive unit to rotate to a position where force can be applied when rotation of the fastening unit is required, thereby improving the ease of operation of the fastening unit. Furthermore, when the fastening unit is already in a pre-tightened state connected to the housing, the rotation of the drive unit relative to the cover further secures the cover to the housing. This allows the valve body to be pre-tightened before further tightening during installation, facilitating timely adjustment of the valve body's position and improving the accuracy of valve body installation.

[0155] Furthermore, the valve body can be locked and unlocked by the drive unit without the need for additional special tools. Operation is simple, convenient, and time-saving, allowing for quick disassembly and assembly even in emergencies, thus improving the operating efficiency, maintenance efficiency, and safety of the battery device. Particularly for scenarios requiring frequent disassembly and assembly of the pressure relief unit, the battery device of this embodiment can significantly save time and improve disassembly and assembly efficiency. In addition, since no special tools are required, the pressure relief unit can also be used in areas where tool use is restricted, increasing its versatility. The valve body can be disassembled and assembled by removing only one fastener, further simplifying the operation steps and improving disassembly and assembly efficiency compared to explosion-proof valves in related technologies that require the removal and assembly of multiple screws.

[0156] 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: at least one battery cell; a box body in which the at least one battery cell is accommodated; a pressure relief part comprising a valve body, a cover body and a connecting part, a first end of the cover body being rotatably connected to the box body, the connecting part comprising a fastening part and a driving part connected to the fastening part, the fastening part being movably connected to a second end of the cover body, and the driving part being used to drive the fastening part to rotate, so as to connect or separate the fastening part from the box body; in the case that the fastening part is connected to the box body, the cover body can press the valve body against the box body, so that the valve body is in a locked state; in the case that the fastening part is separated from the box body, the cover body can rotate relative to the box body, so as to be separated from the valve body and make the valve body in an unlocked state in which the valve body can be separated from the box body.

2. The battery device according to claim 1, wherein the driving part is rotatably connected to the fastening part, and a first rotation axis direction of the driving part relative to the fastening part is perpendicular to a second rotation axis direction of the fastening part; in the case that the fastening part is connected to the box body, the driving part can rotate relative to the fastening part, so as to press the cover body against the box body through the driving part, thereby making the valve body in the locked state in which the valve body is pressed against the box body.

3. The battery device according to claim 2, wherein the driving part has a holding section and a cam connected to one end of the holding section, the cam is rotatably connected to the fastening part, and a wheel surface of the cam has a convex section and a transition section connected to the convex section; the holding section is used to drive the cam to rotate relative to the fastening part, and when the transition section faces the cover body, the driving part can drive the fastening part to rotate, and when the convex section faces the cover body, the convex section can press the cover body against the box body.

4. The battery device according to claim 3, wherein the driving part is provided with a protrusion, the second end of the cover body has a limiting groove, and in the locked state, the protrusion is engaged in the limiting groove, so as to limit the rotation of the driving part around the second rotation axis direction.

5. The battery device according to claim 4, wherein the protrusion is arranged at one end of the holding section close to the cam, the limiting groove penetrates the cover body along a direction perpendicular to the cover body, and the limiting groove also penetrates the cover body along a direction away from the first end of the cover body.

6. The battery device according to claim 3, wherein in the locked state, the holding section abuts against the box body.

7. The battery device according to any one of claims 1-6, wherein the fastening part comprises a fastening section and a connecting section connected to one end of the fastening section, the driving part is connected to the connecting section, and a circumferential surface of the fastening section is convexly provided with a limiting part. The fastening segment comprises a first sub-segment between the limiting portion and the connecting segment, and a second sub-segment at an end of the limiting portion away from the connecting segment, the second sub-segment being configured to connect with the box body, and the cover body being movable relative to the first sub-segment between the limiting portion and the connecting segment.

8. The battery device of claim 7, wherein, The cover body has a mounting hole with a first hole and a second hole connected in sequence in a direction perpendicular to the cover body, the first sub-segment passes through the first hole, and a gap is formed between a hole wall of the first hole and the first sub-segment, and the limiting portion is accommodated in the second hole.

9. The battery device of claim 7, wherein, The connecting segment is arranged perpendicularly to the fastening segment, and two ends of the connecting segment protrude from a peripheral side surface of the fastening segment, and the driving portion is rotatably connected to the two ends of the connecting segment.

10. The battery device of any one of claims 1-6, wherein, The box body has a mounting port, and the valve body comprises a main body mounted in the mounting port and at least one ear portion protruding from an edge of the main body; The cover body has an accommodating hole for exposing the main body, and the cover body further has at least one fitting groove, each of the fitting grooves being engaged with one of the ear portions in the locked state to press the ear portions against the box body.

11. The battery device of claim 10, wherein, With a first end of the cover body and a second end of the cover body being two ends of the cover body in a first direction, two ends of the main body in a second direction perpendicular to the first direction are respectively provided with one of the ear portions, and two ends of the cover body in the second direction are respectively provided with one of the fitting grooves.

12. The battery device of claim 10, wherein, The ear portion has a first circular arc surface facing the cover body, and the fitting groove has a second circular arc surface cooperated with the first circular arc surface.

13. The battery device of any one of claims 1-6, wherein, The box body is provided with a bracket having a first hinge hole, a first end of the cover body is provided with a second hinge hole, and a pin shaft is hingedly connected in the first hinge hole and the second hinge hole.

14. The battery device of any one of claims 1-6, wherein, The box body is provided with a threaded hole, and the fastening portion is screwed in the threaded hole.

15. An electrical device, comprising: The electric device comprises the battery device of any one of claims 1-14, and the battery device is configured to provide electric energy.

16. An energy storage device, characterized by The energy storage device comprises the battery device of any one of claims 1-14, and the battery device is configured to store electric energy.

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