Battery device and electric appliance

Abstract

The application provides a battery device and a power utilization equipment, relates to the technical field of batteries, and is used for guaranteeing the sealing performance of a mounting part and an external structure sealing interface in the battery device. The mounting part is connected to the outside of a box body. The mounting part has a mounting hole and a sealing space inside. At least one side of the mounting part includes a mounting end face along the extension direction of the mounting hole. The sealing space is arranged along the circumferential direction of the mounting hole and penetrates the mounting end face. The mounting hole is connected to the first part of a connecting structure. The second part of the connecting structure is arranged on the side where the mounting end face is located. The second part and the mounting end face are used for clamping the external structure. A sealing part is arranged in the sealing space and along the circumferential direction of the mounting hole. The sealing part abuts against the side of the external structure facing the mounting end face along the extension direction of the mounting hole. A limiting part is protrudedly connected to the inner wall surface of the sealing space along a first direction. The sealing part abuts against at least the limiting part and the inner wall surface of the sealing space. The battery device in the application is used for storing or providing electric energy.

Description

Technical Field

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

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, electrical equipment equipped with batteries is already in widespread use.

[0003] In related technologies, battery devices include a housing and a mounting component connected to the housing. The housing is connected to an external structure via the mounting component. The sealing performance of the connection interface between the mounting component and the external structure has a significant impact on the performance of the battery device and is currently one of the research topics. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a battery device and electrical equipment to ensure the sealing performance of the interface between the mounting components and the external structure in the battery device.

[0005] This application is achieved through the following technical solution.

[0006] A first aspect of this application provides a battery device, including a housing, a mounting member, a seal, and a limiting member. The mounting member is connected to the outside of the housing and has a mounting hole and a sealing space inside. At least one side of the mounting member includes a mounting end face along the extending direction of the mounting hole. The sealing space is arranged circumferentially along the mounting hole and extends through the mounting end face. The mounting hole is used to receive a first part of a connecting structure, and a second part of the connecting structure is located on the side where the mounting end face is located, with the second part and the mounting end face used to clamp an external structure. The seal is located within the sealing space and is arranged circumferentially along the mounting hole. Along the extending direction of the mounting hole, the seal abuts against the side of the external structure facing the mounting end face. The limiting member protrudes along a first direction and is connected to the inner wall surface of the sealing space, with the seal at least abutting between the limiting member and the inner wall surface of the sealing space; wherein the first direction intersects with the extending direction of the mounting hole.

[0007] In the technical solution of this application embodiment, the mounting member is connected to the outside of the housing. The mounting member is used to connect with the external structure to connect the housing and the external structure. Specifically, the mounting member has a mounting hole inside. The first part of the connecting structure passes through the mounting hole, and the second part of the connecting structure is located on the side where the mounting end face is located. The external structure is clamped by the second part of the connecting structure and the mounting end face, thereby realizing the connection between the external structure and the mounting member, and thus the connection between the external structure and the housing. Since the sealing space on the mounting member is arranged circumferentially along the mounting hole and extends through the mounting end face, after the sealing member is placed in the sealing space, the sealing member can abut against the side of the external structure facing the mounting end face, thereby achieving a seal between the external structure and the mounting end face. Since the limiting member protrudes along the first direction and is connected to the inner wall of the sealed space, and the sealing member at least abuts against the limiting member and the inner wall of the sealed space, the clamping force between the limiting member and the inner wall of the sealed space can firmly limit the sealing member within the sealed space, thereby ensuring the stability of the sealing member and the sealing stability between the mounting end face and the external structure. Moreover, when disassembling the external structure, the sealing member is not easily pulled out of the sealed space due to adhesion to the external structure. Thus, when reconnecting the external structure, the sealing performance between the mounting end face and the external structure will not be affected due to the omission of the sealing member.

[0008] In some embodiments of this application, the first direction is perpendicular to the extension direction of the mounting hole.

[0009] With this configuration, since the seal is arranged circumferentially along the mounting hole, the first direction is consistent with the radial direction of the seal. The clamping force exerted by the limiting member and the inner wall of the sealing space on the seal is along the radial direction of the seal. The direction of the clamping force is perpendicular to the direction in which the seal may come out of the sealing space (the extension direction of the mounting hole), which can better ensure the stability of the seal within the sealing space.

[0010] In some embodiments of this application, the inner wall surface of the sealed space has a recessed relief groove. Along the first direction, the relief groove is located on the side of the seal away from the limiting member and is projected onto the same projection plane along the first direction. At least a portion of the projection of the limiting member overlaps with the projection of the groove opening of the relief groove, and a portion of the seal abuts between the limiting member and the relief groove.

[0011] With this configuration, since the projection of the limiting member onto the same projection plane along the first direction overlaps at least part of the projection of the relief groove opening, and the relief groove is located on the side of the seal away from the limiting member, the seal can deform to partially enter the relief groove under the abutting action of the limiting member. That is, part of the seal abuts between the limiting member and the relief groove, which can reduce the probability of excessive compression damage to the seal due to lack of relief space and extend the service life of the seal. In addition, the deformation of the seal to partially enter the relief groove also further improves the installation stability of the seal.

[0012] In some embodiments of this application, the recessed direction of the clearance groove is parallel to the first direction.

[0013] With this configuration, the recessed direction of the clearance groove is parallel to the protruding direction of the limiting component, which is the first direction. This facilitates the alignment design of the clearance groove and the limiting component during actual manufacturing, reduces the processing difficulty of the clearance groove and the limiting component, and also makes the clamping force of the inner wall surface of the limiting component and the clearance groove on the seal more uniform along the extension direction of the mounting hole, making the deformation of the seal more controllable.

[0014] In some embodiments of this application, both the limiting member and the clearance groove are arranged circumferentially along the mounting hole.

[0015] This design, with both the limiting component and the clearance groove positioned along the circumference of the mounting hole, ensures that the seal can partially enter the clearance groove along the circumference of the mounting hole. This makes the deformation of the seal along the circumference of the mounting hole more uniform, reducing the probability of excessive compression damage to the seal due to lack of clearance space, and extending the service life of the seal. In addition, the partial deformation of the seal along the circumference of the mounting hole into the clearance groove improves the stability of the seal's circumferential positioning.

[0016] In some embodiments of this application, the limiting member is disposed circumferentially along the mounting hole.

[0017] This configuration, with both the limiting element and the sealing element positioned along the circumference of the mounting hole, ensures that the sealing element is subjected to clamping force from the inner wall of the limiting element and the sealing space along the circumference of the mounting hole. This reduces the probability of local instability in the sealing element and makes the overall sealing element more secure.

[0018] In some embodiments of this application, the mount includes a main body and a connecting cylinder. The main body has an assembly hole, and the connecting cylinder is connected to the assembly hole. The connecting cylinder includes a mounting hole. Along the extending direction of the mounting hole, the end face of the main body facing the external structure and the end face of the connecting cylinder facing the external structure together form a mounting end face. Along the radial direction of the mounting hole, a portion of the outer wall surface of the connecting cylinder and the inner wall surface of the assembly hole are spaced apart to form an annular sealing space.

[0019] This design, with the mount consisting of a main body and a connecting cylinder, allows for separate machining and replacement of the two parts. If wear occurs in either the main body or the connecting cylinder, only the corresponding component needs replacement, reducing maintenance costs. Furthermore, the split design of the mount facilitates the installation of the seal. Specifically, the seal can be first placed on the main body or the connecting cylinder, and then the main body and the connecting cylinder can be moved relative to each other along the extension direction of the mounting hole. Once in place, the outer wall of the connecting cylinder and the inner wall of the mounting hole form a sealing space, within which the seal is also positioned, improving the ease of seal installation.

[0020] In some embodiments of this application, the assembly hole is a stepped hole, comprising a first hole segment and a second hole segment. Along the extension direction of the mounting hole, the first hole segment is located on the side of the second hole segment facing away from the external structure. The diameter of the first hole segment is smaller than the diameter of the second hole segment, so as to form a stepped surface between the first hole segment and the second hole segment. The outer wall surface of part of the connecting cylinder and the inner wall surface of the second hole segment, together with the stepped surface, define a sealing space, and the seal is supported on the stepped surface.

[0021] In this configuration, the assembly hole consists of a first segment and a second segment. By making the diameter of the first segment smaller than the diameter of the second segment, the assembly hole forms a stepped hole. Since the seal is supported by the stepped surface between the first and second segments, the stability of the seal within the sealing space is ensured along the extension direction of the mounting hole, thus guaranteeing the stability of the seal. Furthermore, during installation, the seal can be placed on the stepped surface, and then the main body and the connecting cylinder can be moved relative to each other along the extension direction of the mounting hole. The outer wall of the connecting cylinder, the inner wall of the assembly hole, and the stepped surface define the sealing space while simultaneously allowing the limiting component to abut against the seal. This utilizes the stepped surface to improve the ease of seal installation.

[0022] In some embodiments of this application, the connecting cylinder includes a first cylinder segment and a second cylinder segment. Along the extending direction of the mounting hole, the first cylinder segment is connected to the end of the second cylinder segment facing away from the external structure, and the interiors of the first and second cylinder segments communicate and form at least a portion of the mounting hole. The assembly hole includes a first hole segment and a second hole segment. Along the extending direction of the mounting hole, the first hole segment is located on the side of the second hole segment facing away from the external structure. Along the radial direction of the mounting hole, the outer wall surface of the first cylinder segment and the inner wall surface of the first hole segment are spaced apart to form an annular sealing space, and the outer wall surface of the second cylinder segment is connected to the inner wall surface of the second hole segment.

[0023] With this configuration, the connecting cylinder is composed of a first cylinder section and a second cylinder section, and the assembly hole is composed of a first hole section and a second hole section. During actual assembly, the connecting cylinder and the assembly hole are moved relative to each other along the extension direction of the mounting hole. When they are in place, the outer wall surface of the first cylinder section and the outer wall surface of the first hole section are spaced apart to form an annular sealing space, while the outer wall surface of the second cylinder section and the inner wall surface of the second hole section are connected to each other, so that the connection position and the sealing position are arranged separately and do not interfere with each other, ensuring the convenience of assembling the mounting component and placing the sealing component in the sealing space.

[0024] In some embodiments of this application, the outer wall surface of the second cylindrical section is detachably connected to the inner wall surface of the second hole section.

[0025] This design not only ensures the connection between the second cylinder section and the second hole section, but also facilitates their separation. In the event that at least one of the main body, connecting cylinder, or seal needs to be replaced or repaired, the separation between the second cylinder section and the second hole section enables the separation between the main body and the connecting cylinder, while simultaneously opening the sealing space, thus ensuring the convenience of maintenance and replacement of the mounting component and the seal.

[0026] In some embodiments of this application, the outer wall surface of the second cylindrical section has an external thread, and the inner wall surface of the second hole section has an internal thread, with the internal thread and the external thread being threadedly connected.

[0027] With this configuration, the second cylindrical section and the second hole section are connected or separated via external and internal threads. This threaded connection can withstand various shaking conditions of the battery device, ensuring connection stability. Furthermore, when the limiting member is connected to the outer wall of the first cylindrical section or the inner wall of the first hole section, as the second cylindrical section is screwed into the second hole section, the limiting member gradually abuts against the seal, ultimately securing the seal stably within the sealing space. This facilitates the limiting member's abutment and positioning of the seal.

[0028] In some embodiments of this application, the limiting member is connected to a portion of the outer wall surface of the connecting cylinder, and the sealing member abuts against the inner wall surface of the limiting member and the assembly hole.

[0029] With this configuration, the limiting component is connected to part of the outer wall of the connecting cylinder. When assembling the connecting cylinder and the main body, the connecting cylinder enters the assembly hole of the main body along the extension direction of the mounting hole. During the movement, the connecting cylinder can drive the limiting component to move synchronously, so as to use the limiting component to gradually and evenly compress the sealing component. After moving into place, the limiting component limits and fixes the sealing component, ensuring the stability of the sealing component.

[0030] In some embodiments of this application, the clearance groove is located on the inner wall surface of the assembly hole, and a portion of the seal abuts between the limiting member and the clearance groove.

[0031] With this configuration, when assembling the connecting cylinder and the main body, the connecting cylinder enters the assembly hole of the main body along the extension direction of the mounting hole. During the movement, the connecting cylinder can drive the limiting member to move synchronously, so that the limiting member can gradually and evenly squeeze the seal, and cause part of the seal to enter the relief groove under the squeezing of the limiting member. Finally, after the connecting cylinder moves into place, the seal abuts between the limiting member and the relief groove, realizing the limiting and fixing of the seal during assembly, which facilitates the setting of the seal.

[0032] In some embodiments of this application, both the seal and the limiting member extend around the circumference of the annular sealing space.

[0033] With this configuration, the limiting element and the sealing element extend along the entire circumference of the annular sealing space, ensuring that the sealing element is subjected to the resisting force from the limiting element along the circumference of the mounting hole, reducing the probability of local instability of the sealing element, and making the overall sealing element more secure.

[0034] The second aspect of this application provides an electrical device, which includes an external structure, a battery device as described in any of the above embodiments, and a connection structure. The connection structure includes a first part and a second part. The first part passes through the mounting hole of the battery device, and the second part is disposed on one side of the mounting end face of the battery device. The external structure is sandwiched between the second part and the mounting end face.

[0035] In the technical solutions of this application embodiment, since the electrical equipment includes the battery device in any of the above embodiments, the same beneficial effects can be achieved.

[0036] In some embodiments of this application, the first part is threadedly connected to the mounting hole.

[0037] With this configuration, the threaded connection between the first part and the mounting hole can provide the second part with a uniform locking force applied to the external structure, ensuring a tight fit between the external structure and the mounting end face, guaranteeing the sealing stability between the external structure and the mounting end face. Moreover, the threaded connection method can also cope with various shaking conditions of electrical equipment. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the vehicle structure provided in the embodiments of this application;

[0039] Figure 2 This is an exploded schematic diagram of the battery device provided in the embodiments of this application;

[0040] Figure 3 This is a first cross-sectional schematic diagram of the assembly of the mount, seal and limiting member provided in the embodiments of this application;

[0041] Figure 4This is a cross-sectional schematic diagram of the main body provided in an embodiment of this application;

[0042] Figure 5 This is a partial cross-sectional schematic diagram of the connecting cylinder provided in an embodiment of this application;

[0043] Figure 6 This is a second cross-sectional schematic diagram of the assembly of the mounting component, sealing component, and limiting component provided in the embodiments of this application;

[0044] Figure 7 This is a cross-sectional schematic diagram showing the cooperation between the main body and the seal provided in the embodiment of this application.

[0045] It should be noted that the terms "first" and "second" mentioned above are only used to distinguish between different options and do not represent the degree of superiority or inferiority of the options or their priority in the implementation process.

[0046] Figure Labels

[0047] 1000 - Vehicle; 100 - Battery unit; 110 - Housing; 111 - First housing section; 112 - Second housing section; 120 - Battery cell assembly; 12 - Battery cell; 130 - Mounting component; 131 - Mounting hole; 132 - Sealed space; 133 - Mounting end face; 134 - Clearance groove; 135 - Main body; 1351 - Assembly hole; a1 - First hole section; a2 - Second hole section; a3 - Stepped surface; 136 - Connecting cylinder; 1361 - First cylinder section; 1362 - Second cylinder section; 140 - Seal; 150 - Limiting component; 200 - Controller; 300 - Motor; 400 - Connection structure; 410 - First part; 420 - Second part; 500 - External structure. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as aircraft. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0050] In existing battery systems, the battery device includes a housing and a mounting component. The mounting component is connected to the outside of the housing and is used to connect to an external structure, thus attaching the housing to the external structure. Specifically, the mounting component has mounting holes. Along the extension direction of the mounting holes, one side of the mounting component includes a mounting end face, allowing a first part of a connecting structure to pass through the mounting holes, and a second part of the connecting structure to be located on the side of the mounting end face. This second part and the mounting end face are used to clamp the external structure, connecting the external structure and the mounting component. Because there is a gap between the external structure and the mounting end face that communicates with the mounting holes, external impurities may enter the mounting holes through the gaps, and then penetrate into the weak points of the housing, affecting the sealing performance of the housing and the performance of the battery device. Therefore, ensuring the sealing performance of the external structure and the mounting end face is one of the research topics in this field.

[0051] In related technologies, the battery device also includes a seal. A sealing groove is provided on the mounting end face along the circumference of the mounting hole. The seal is placed in the sealing groove and, along the extension direction of the mounting hole, abuts against the external structure, thereby sealing the connection interface between the mounting end face and the external structure. Specifically, during assembly, the seal is first pressed into the sealing groove, then the external structure is placed on the mounting end face. Next, the first part of the connecting structure is connected to the mounting hole, and the second part of the connecting structure is pressed against the side of the external structure away from the seal, thereby using the elastic deformation of the seal to seal the gap between the mounting end face and the external structure.

[0052] However, when disassembling the external structure, there may be situations where the seals are attached to the external structure. When the external structure is removed, the seals may also be carried out of the sealing groove, which may lead to sealing interface failure due to the subsequent omission of seals.

[0053] Based on this, this application provides a battery device, which includes a housing, a mounting member, a seal, and a limiting member. The mounting member is connected to the outside of the housing and has a mounting hole and a sealing space inside. At least one side of the mounting member includes a mounting end face along the extending direction of the mounting hole. The sealing space is arranged circumferentially along the mounting hole and extends through the mounting end face. The mounting hole is used to receive a first part of a connecting structure, and a second part of the connecting structure is located on the side where the mounting end face is located, with the second part and the mounting end face used to clamp an external structure. The seal is located within the sealing space and is arranged circumferentially along the mounting hole. Along the extending direction of the mounting hole, the seal abuts against the side of the external structure facing the mounting end face. The limiting member protrudes along a first direction and is connected to the inner wall of the sealing space, with the seal at least abutting between the limiting member and the inner wall of the sealing space; wherein the first direction intersects with the extending direction of the mounting hole.

[0054] With the above configuration, the mounting component is connected to the outside of the enclosure. The mounting component connects the enclosure to the external structure. Specifically, the mounting component has mounting holes inside. The first part of the connecting structure passes through these holes, with the second part of the connecting structure positioned on the side of the mounting face. The second part of the connecting structure and the mounting face clamp the external structure, thus connecting the external structure to the mounting component and the enclosure. Because the sealing space on the mounting component is circumferentially arranged along the mounting hole and extends through the mounting face, after the seal is placed within the sealing space, the seal can abut against the side of the external structure facing the mounting face, thereby achieving a seal between the external structure and the mounting face. Since the limiting member protrudes along the first direction and is connected to the inner wall of the sealed space, and the sealing member at least abuts against the limiting member and the inner wall of the sealed space, the clamping force between the limiting member and the inner wall of the sealed space can firmly limit the sealing member within the sealed space, thereby ensuring the stability of the sealing member and the sealing stability between the mounting end face and the external structure. Moreover, when disassembling the external structure, the sealing member is not easily pulled out of the sealed space due to adhesion to the external structure. Thus, when reconnecting the external structure, the sealing performance between the mounting end face and the external structure will not be affected due to the omission of the sealing member.

[0055] In some embodiments of this application, the battery device further includes individual battery cells housed within a casing. The battery cells and battery devices provided in the embodiments of this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft.

[0056] In some embodiments of this application, an electrical device is also provided, which includes the aforementioned battery device for providing electrical energy. The electrical device may be, but is not limited to, a mobile phone, tablet, laptop, electric toy, power tool, electric vehicle, electric car, ship, spacecraft, etc. Electric toys may include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0057] In the following embodiments, for ease of explanation, a vehicle is used as an example of the electrical equipment in one embodiment of this application.

[0058] Figure 1 This is a structural schematic diagram of the vehicle provided in an embodiment 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 vehicles, etc. Figure 1As shown, a battery device 100 is installed inside the vehicle 1000. 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.

[0059] 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.

[0060] As an example, an electrical device comprising an aircraft is described in one embodiment of this application.

[0061] Aircraft generally refer to machines that fly within or outside the atmosphere (space), and can include aircraft that fly within the atmosphere and spacecraft that fly in space.

[0062] Aircraft can include airplanes, airships, etc., and for example, low-altitude aircraft, eVTOL (electric vertical take-off and landing) aircraft, commuter aircraft, regional aircraft, etc.

[0063] Spacecraft can include airplanes, rockets, space shuttles, and spacecraft.

[0064] An aircraft typically includes an airframe (cabin shell) and a battery device 100 located on the airframe and providing electrical power to the airframe.

[0065] The battery device 100 mentioned in the embodiments of this application may include a plurality of battery cell assemblies 120 for providing voltage and capacity. The battery cell assembly 120 may include a plurality of battery cells 12, which are connected in series, parallel or mixed connection via busbars.

[0066] In some embodiments, the battery cell assembly 120 is typically formed by arranging multiple battery cells 12; as an example, the battery cell assembly 120 can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0067] In some embodiments, such as Figure 2 As shown, Figure 2 This is an exploded view of the battery device provided in the embodiment of this application. The battery device 100 can be a battery pack, which includes a housing 110 and a plurality of battery cell assemblies 120, with the battery cell assemblies 120 housed in the housing 110.

[0068] In some examples, the housing 110 in this application is formed by fastening together a first housing portion 111 and a second housing portion 112, with a cavity formed between the two housing portions for accommodating the battery cell assembly 120.

[0069] In this embodiment of the application, the battery cell 12 can be a secondary battery, which refers to the battery cell 12 that can be used again after being discharged by recharging to activate the active material.

[0070] The battery cell 12 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.

[0071] In some embodiments, the battery cell 12 is a square wound battery cell with a square shell. The electrode assembly is disposed inside the shell. The electrode assembly includes a cathode, an anode, and a separator. The separator is disposed between the cathode and the anode and can prevent short circuit between the cathode and the anode, while allowing active ions to pass through. The two tabs include a positive tab and a negative tab. The positive tab is electrically connected to the cathode, and the negative tab is electrically connected to the anode.

[0072] In some examples, the outer casing can be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc.

[0073] In some examples, the housing includes a housing and an end cap assembly, one end of the housing having an opening, the end cap assembly being connected to the opening and forming a receiving cavity with the housing, and the electrode assembly being disposed within the receiving cavity.

[0074] In some embodiments, the plurality of electrodes includes an anode electrode and a cathode electrode with opposite polarities.

[0075] As an example, the anode electrode may include an anode current collector and an anode active material disposed on at least one surface of the anode current collector.

[0076] As an example, the anode current collector has two surfaces opposite each other in its own thickness direction, and the anode active material is disposed on either or both of the two opposite surfaces of the anode current collector.

[0077] As an example, the cathode current collector has two surfaces opposite each other in its own thickness direction, and the cathode active material is disposed on either or both of the two opposite surfaces of the cathode current collector.

[0078] As an example, the cathode electrode may include a cathode current collector and a cathode active material disposed on at least one surface of the cathode current collector.

[0079] As an example, the cathode current collector has two surfaces opposite each other in its own thickness direction, and the cathode active material is disposed on either or both of the two opposite surfaces of the cathode current collector.

[0080] In some embodiments, the anode electrode may be made of foamed metal. The foamed metal may be foamed nickel, foamed copper, foamed aluminum, or a foamed alloy, etc. In this case, the surface of the foamed metal may or may not contain an anode active material, although it can also contain one.

[0081] As an example, anolyte active material can be filled or / and deposited within the anolyte current collector.

[0082] In some embodiments, the cathode current collector may be made of aluminum, and the anode current collector may be made of copper.

[0083] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0084] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the cathode and the anode, serving both to transport ions and to isolate the anode and cathode.

[0085] In this embodiment, the electrolyte includes an electrolyte salt and a solvent.

[0086] In some embodiments, a pressure relief mechanism is provided on the housing. The pressure relief mechanism is used to release the internal pressure of the battery cell 12.

[0087] Below, refer to Figures 3 to 7 Some embodiments of this application will be described in detail.

[0088] Figure 3 This is a first cross-sectional schematic diagram of the assembly of the mount, seal and limiter provided in the embodiments of this application. Figure 4 This is a cross-sectional schematic diagram of the main body provided in the embodiment of this application. Figure 5 This is a partial cross-sectional schematic diagram of the connecting cylinder provided in an embodiment of this application. Figure 6 This is a second cross-sectional schematic diagram of the assembly of the mount, seal and limiter provided in the embodiments of this application. Figure 7This is a cross-sectional schematic diagram showing the cooperation between the main body and the seal provided in the embodiment of this application.

[0089] For ease of description, this application introduces the extension direction of the mounting hole and the first direction. The extension direction of the mounting hole intersects the first direction, and the angle of intersection can be any suitable angle such as 60°, 70°, 85° or 90°. For ease of understanding, this application describes the case where the extension direction of the mounting hole is perpendicular to the first direction. For example, the arrangement direction of the first box and the second box is taken as the extension direction of the mounting hole, and the radial direction of the mounting hole is taken as the first direction. Here, the first direction is not a fixed direction, but any direction that intersects with the extension direction of the mounting hole.

[0090] In some embodiments of this application, such as Figure 3 , Figure 4 As shown, a battery device 100 is provided, which includes a housing 110, a mounting member 130, a sealing member 140, and a limiting member 150. The mounting member 130 is connected to the outside of the housing 110. The mounting member 130 has a mounting hole 131 and a sealing space 132 inside. Along the extending direction of the mounting hole 131, at least one side of the mounting member 130 includes a mounting end face 133. The sealing space 132 is arranged circumferentially along the mounting hole 131 and penetrates the mounting end face 133. The mounting hole 131 is used to pass through the first part 410 of the connecting structure 400. The second part 420 of the connecting structure 400 is provided on the side where the mounting end face 133 is located, and the second part 420 and the mounting end face 133 are used to clamp the external structure 500. A seal 140 is disposed within the sealing space 132 and is arranged circumferentially along the mounting hole 131. Along the extending direction of the mounting hole 131, the seal 140 abuts against the side of the external structure 500 facing the mounting end face 133. A limiting member 150 protrudes along a first direction and is connected to the inner wall surface of the sealing space 132, and the seal 140 at least abuts between the limiting member 150 and the inner wall surface of the sealing space 132; wherein, the first direction intersects with the extending direction of the mounting hole 131.

[0091] In some examples, the mounting member 130 is connected to the first box 111 or the second box 112 along the arrangement direction of the first box 111 and the second box 112. With this arrangement, the mounting member 130 will not affect the connection interface between the first box 111 and the second box 112, and the reliability of the connection between the first box 111 and the second box 112 can be guaranteed.

[0092] For example, along the direction of gravity, the first box 111 is located below the second box 112, and the mounting member 130 is connected to the first box 111. In this way, the first box 111 is connected to the external structure 500 through the mounting member 130. Since the first box 111 mainly bears the responsibility of installing and fixing the battery device 100, the stress is more reasonable.

[0093] Of course, the mount 130 can also be connected to the interface between the first box section 111 and the second box section 112.

[0094] The mounting component 130 can be a structure independent of the housing 110. After the mounting component 130 and the housing 110 are manufactured, they are connected together by means of bonding, screw fastening, etc. Of course, the mounting component 130 can also be a structure integrally formed with the housing 110, which can ensure the structural reliability of the overall structure of the mounting component 130 and the housing 110.

[0095] For the sealing space 132, along the extension direction of the mounting hole 131, the sealing space 132 can be a sealing groove or a sealing through hole that is recessed relative to the mounting end face 133. The sealing groove means that the sealing space 132 does not penetrate the other side of the hanger 130 away from the mounting end face 133, and the sealing through hole means that the sealing space 132 penetrates the hanger 130.

[0096] The sealing space 132 can be arranged circumferentially along the mounting hole 131, which can be either extending around the circumference of the mounting hole 131 or including multiple spaced sub-spaces along the circumference of the mounting hole 131.

[0097] In some examples, the connecting structure 400 is a bolt, which includes a first part 410 and a second part 420. The first part 410 is the shank of the bolt, and the second part 420 is the head of the bolt. The shank of the bolt passes through the mounting hole 131 and is connected to the hanger 130. The head of the bolt is located on the side where the mounting end face 133 is located. The external structure 500 is clamped between the head of the bolt and the mounting end face 133, thereby realizing the connection between the external structure 500 and the hanger 130. The bolt improves the convenience of connecting the hanger 130 and the external structure 500.

[0098] The external structure 500 can refer to the mounting plate on the main body of the electrical equipment. For example, the external structure 500 can be the mounting plate on the main body of the vehicle 1000 or the mounting plate on the main body of the aircraft.

[0099] For seal 140, the material of seal 140 may include rubber, silicone or thermoplastic elastomer, and the rubber may be EPDM rubber or fluororubber, etc.

[0100] The sealing element 140 is arranged circumferentially along the mounting hole 131. It can be that the sealing element 140 extends circumferentially along the mounting hole 131, or the sealing element 140 can include multiple sealing segments arranged circumferentially along the mounting hole 131. Correspondingly, the sealing space 132 includes multiple subspaces, and each subspace is provided with a sealing segment, thereby realizing the setting of the sealing element 140.

[0101] In some examples, along the extension direction of the mounting hole 131, the seal 140 abuts against the side of the outer structure 500 facing the mounting end face 133. The seal 140 may protrude from the mounting end face 133 to abut against the outer structure 500, or a portion of the outer structure 500 may enter the sealing space 132 to abut against the seal 140.

[0102] When the seal 140 is at least abutting between the limiting member 150 and the inner wall surface of the sealing space 132, the seal 140 may or may not deform. When the deformation capacity of the seal 140 is consistent, the seal 140 is more stable within the sealing space 132 when it deforms compared to when it does not deform.

[0103] In some examples, the limiting member 150 can be arranged circumferentially along the mounting hole 131, so that the limiting member 150 and the seal 140 are matched circumferentially along the mounting hole 131. This ensures that the seal 140 is abutted by the limiting member 150 circumferentially along the mounting hole 131, thereby ensuring the circumferential abutment stability of the seal 140 and reducing the problem of the seal 140 shaking due to local instability. Of course, the limiting member 150 can also be a columnar protrusion structure that is not arranged circumferentially along the mounting hole 131.

[0104] With the above configuration, the mounting member 130 is connected to the outside of the housing 110. The mounting member 130 is used to connect with the external structure 500 to connect the housing 110 and the external structure 500. Specifically, the mounting member 130 has a mounting hole 131 inside. The first part 410 of the connecting structure 400 is inserted into the mounting hole 131, so that the second part 420 of the connecting structure 400 is located on the side where the mounting end face 133 is located. The second part 420 of the connecting structure 400 and the mounting end face 133 are used to clamp the external structure 500, thereby realizing the connection between the external structure 500 and the mounting member 130, and realizing the connection between the external structure 500 and the housing 110. Since the sealing space 132 on the mount 130 is arranged circumferentially along the mounting hole 131 and extends through the mounting end face 133, after the seal 140 is placed in the sealing space 132, the seal 140 can abut against the side of the external structure 500 facing the mounting end face 133, thereby achieving a seal between the external structure 500 and the mounting end face 133. Since the limiting member 150 protrudes along the first direction and is connected to the inner wall of the sealing space 132, and the sealing member 140 at least abuts against the limiting member 150 and the inner wall of the sealing space 132, the clamping force between the limiting member 150 and the inner wall of the sealing space 132 can firmly limit the sealing member 140 within the sealing space 132, thereby ensuring the stability of the sealing member 140 and the sealing stability between the mounting end face 133 and the external structure 500. Moreover, when the external structure 500 is disassembled, the sealing member 140 is not easily pulled out of the sealing space 132 due to adhesion to the external structure 500. Thus, when the external structure 500 is reconnected, the sealing performance between the mounting end face 133 and the external structure 500 will not be affected due to the omission of the sealing member 140.

[0105] In some embodiments of this application, such as Figure 3 As shown, the first direction is perpendicular to the extension direction of the mounting hole 131.

[0106] With the above configuration, since the seal 140 is arranged circumferentially along the mounting hole 131, the first direction is consistent with the radial direction of the seal 140. The clamping force of the limiting member 150 and the inner wall surface of the sealing space 132 acting on the seal 140 is along the radial direction of the seal 140. The direction of the clamping force is perpendicular to the direction in which the seal 140 may come out of the sealing space 132 (the extension direction of the mounting hole 131), which can better ensure the stability of the seal 140 in the sealing space 132.

[0107] In other embodiments of this application, the first direction may be 60°, 70°, 80° or 85° from the extending direction of the mounting hole 131.

[0108] In some embodiments of this application, such as Figure 3 , Figure 4As shown, the inner wall surface of the sealed space 132 has a recessed relief groove 134. Along the first direction, the relief groove 134 is provided on the side of the seal 140 away from the limiting member 150. Projected along the first direction onto the same projection plane, at least a portion of the projection of the limiting member 150 overlaps with the projection of the groove opening of the relief groove 134. A portion of the seal 140 abuts between the limiting member 150 and the relief groove 134.

[0109] It is understandable that part of the seal 140 abuts between the limiting member 150 and the relief groove 134, that is, part of the seal 140 deforms and enters the relief groove 134 through the abutment of the limiting member 150.

[0110] With the above configuration, since the projection of the limiting member 150 onto the same projection plane along the first direction overlaps with the projection of the groove opening of the relief groove 134, and the relief groove 134 is located on the side of the sealing member 140 away from the limiting member 150, under the abutment action of the limiting member 150, the sealing member 140 can deform to partially enter the relief groove 134, that is, part of the sealing member 140 abuts between the limiting member 150 and the relief groove 134, which can reduce the probability of the sealing member 140 being damaged by excessive compression due to the lack of relief space, and extend the service life of the sealing member 140. In addition, the deformation of the sealing member 140 to partially enter the relief groove 134 also further improves the installation stability of the sealing member 140.

[0111] The recessed direction of the clearance groove 134 can be parallel, consistent, or at an acute or obtuse angle to the first direction.

[0112] In some embodiments of this application, such as Figure 3 As shown, the recessed direction of the clearance groove 134 is parallel to the first direction.

[0113] With the above configuration, the recessed direction of the clearance groove 134 is parallel to the protruding direction of the limiting member 150, which is the first direction. This facilitates the alignment design of the clearance groove 134 and the limiting member 150 during actual manufacturing, reduces the processing difficulty of the clearance groove 134 and the limiting member 150, and makes the clamping force of the inner wall surface of the limiting member 150 and the clearance groove 134 on the seal 140 more uniform along the extension direction of the mounting hole 131, and makes the deformation of the seal 140 more controllable.

[0114] In some embodiments of this application, such as Figure 3 , Figure 4 As shown, both the limiting member 150 and the clearance groove 134 are arranged circumferentially along the mounting hole 131.

[0115] In some examples, both the limiting member 150 and the relief groove 134 extend circumferentially along the mounting hole 131. This circumferential extension of the mounting hole 131 ensures the uniformity of the deformation of the seal 140 and the stability of the seal 140.

[0116] In other examples, the limiting member 150 includes a plurality of limiting portions arranged circumferentially along the mounting hole 131, the limiting portions protruding in a first direction and connected to the inner wall surface of the clearance space, the clearance groove 134 includes a plurality of sub-grooves arranged circumferentially along the mounting hole 131, the plurality of limiting portions and the plurality of sub-grooves are correspondingly arranged, and the sealing member 140 at least abuts between the limiting portions and the sub-grooves, thereby achieving the limiting and fixing of the sealing member 140 circumferentially along the mounting hole 131.

[0117] With the above-mentioned configuration, the limiting member 150 and the relief groove 134 are arranged circumferentially along the mounting hole 131, ensuring that the seal 140 can partially enter the relief groove 134 circumferentially along the mounting hole 131. This makes the deformation of the seal 140 circumferentially along the mounting hole 131 more uniform, reducing the probability of excessive compression damage to the seal 140 due to lack of relief space circumferentially along the mounting hole 131, and extending the service life of the seal 140. In addition, the circumferential deformation of the seal 140 along the mounting hole 131 to partially enter the relief groove 134 is improved, thus enhancing the stability of the seal 140 circumferentially.

[0118] In some embodiments of this application, such as Figure 5 As shown, the limiting member 150 is arranged circumferentially along the mounting hole 131.

[0119] In some examples, the limiting member 150 extends circumferentially along the mounting hole 131, which ensures that the sealing member 140 is abutted by the limiting member 150 circumferentially along the mounting hole 131, thereby ensuring the abutment stability of the sealing member 140 in the circumferential direction and reducing the problem of the sealing member 140 shaking due to local instability.

[0120] In other examples, the limiting member 150 includes a plurality of limiting portions arranged circumferentially along the mounting hole 131, the limiting portions protruding in a first direction and connected to the inner wall surface of the clearance space, and the sealing member 140 at least abutting between the limiting portions and the inner wall surface of the clearance space, thereby achieving the limiting and fixing of the sealing member 140 circumferentially along the mounting hole 131.

[0121] With the above settings, the positioning of the limiting member 150 and the sealing member 140 along the circumference of the mounting hole 131 ensures that the sealing member 140 is subjected to clamping force from the limiting member 150 and the inner wall of the sealing space 132 along the circumference of the mounting hole 131, reducing the probability of local instability of the sealing member 140 and making the overall fixing of the sealing member 140 more reliable.

[0122] The mounting component 130 can be an integral structure, or it can be a separate structure comprising a main body 135 and a connecting cylinder 136.

[0123] In some embodiments of this application, such as Figure 3 , Figure 6 As shown, the mounting component 130 includes a main body 135 and a connecting cylinder 136. The main body 135 has a mounting hole 1351, and the connecting cylinder 136 is connected to the mounting hole 1351. The connecting cylinder 136 includes a mounting hole 131. Along the extending direction of the mounting hole 131, the end face of the main body 135 facing the external structure 500 and the end face of the connecting cylinder 136 facing the external structure 500 together form a mounting end face 133. Along the radial direction of the mounting hole 131, a portion of the outer wall surface of the connecting cylinder 136 and the inner wall surface of the mounting hole 1351 are spaced apart to form an annular sealing space 132.

[0124] The main body 135 can be a cylindrical structure, and the internal space of the cylindrical structure forms an assembly hole 1351. The cylindrical structure can be a round cylindrical structure or a square cylindrical structure, etc. The assembly hole 1351 on the main body 135 extends along the extension direction of the mounting hole 131.

[0125] In addition, the fact that the connecting cylinder 136 includes the mounting hole 131 means that the connecting cylinder 136 has its own space inside, which includes the mounting hole 131. When the mounting hole 131 is connected to the first part 410 of the connecting structure 400, the first part 410 is connected to the inner wall surface of the connecting cylinder 136.

[0126] The material of the connecting cylinder 136 may include plastic or metal.

[0127] In some examples, the size of the main body 135 is smaller than the size of the connecting cylinder 136 along the extension direction of the mounting hole 131. This ensures that the connecting cylinder 136 is completely located inside the connecting cylinder 136, avoiding interference between the connecting cylinder 136 and the housing 110, etc.

[0128] In addition, the limiting member 150 can be connected to the inner wall surface of the assembly hole 1351 or part of the outer wall surface of the connecting cylinder 136, as long as the limiting member 150 protrudes along the first direction.

[0129] In some examples, the main body 135 is connected to the housing 110. Since the main body 135 is located outside the connecting cylinder 136, connecting the main body 135 and the housing 110 can improve the ease of connection.

[0130] With the above configuration, since the mounting component 130 consists of two parts, the main body 135 and the connecting cylinder 136, the main body 135 and the connecting cylinder 136 can be processed and replaced separately. If the main body 135 or the connecting cylinder 136 is worn, only the corresponding part needs to be replaced, which can reduce maintenance costs. Moreover, the split design of the mounting component 130 can also facilitate the installation of the seal 140. Specifically, the seal 140 can be first set on the main body 135 or the connecting cylinder 136, and then the main body 135 and the connecting cylinder 136 can be moved relative to each other along the extension direction of the mounting hole 131. After being moved into place, part of the outer wall surface of the connecting cylinder 136 and the inner wall surface of the assembly hole 1351 form a sealing space 132, and the seal 140 is also placed in the sealing space 132, thereby improving the convenience of installing the seal 140.

[0131] The mounting hole 1351 can be a stepped hole with a stepped surface a3, or the mounting hole 1351 can be a through hole without a stepped surface a3.

[0132] In some embodiments of this application, such as Figure 4 , Figure 7 As shown, the mounting hole 1351 is a stepped hole, comprising a first hole segment a1 and a second hole segment a2. Along the extending direction of the mounting hole 131, the first hole segment a1 is located on the side of the second hole segment a2 away from the external structure 500. The diameter of the first hole segment a1 is smaller than the diameter of the second hole segment a2, so as to form a stepped surface a3 between the first hole segment a1 and the second hole segment a2. A portion of the outer wall surface of the connecting cylinder 136, the inner wall surface of the second hole segment a2, and the stepped surface a3 together define a sealing space 132, and the sealing element 140 is supported on the stepped surface a3.

[0133] It is understood that the sealing space 132, defined by a portion of the outer wall surface of the connecting cylinder 136, the inner wall surface of the second hole section a2, and the stepped surface a3, is a groove-shaped structure, with the groove opening located on the mounting end face 133. Furthermore, the limiting member 150 can be connected to a portion of the outer wall surface of the connecting cylinder 136, the inner wall surface of the second hole section a2, or the stepped surface a3, as long as the limiting member 150 protrudes along the first direction.

[0134] In some examples, along the extension direction of the mounting hole 131, the first hole segment a1 and the second hole segment a2 extend in the same direction, and the plane containing the stepped surface a3 is perpendicular to the extension direction of the mounting hole 131. This ensures the stability of the seal 140 supported on the stepped surface a3. Of course, the plane containing the stepped surface a3 can also be an inclined surface that forms an acute or obtuse angle with the extension direction of the mounting hole 131.

[0135] With the above configuration, the assembly hole 1351 is composed of a first hole segment a1 and a second hole segment a2. By making the diameter of the first hole segment a1 smaller than the diameter of the second hole segment a2, the assembly hole 1351 forms a stepped hole. Since the seal 140 is supported by the stepped surface a3 between the first hole segment a1 and the second hole segment a2, the stability of the seal 140 in the sealing space 132 is ensured along the extension direction of the mounting hole 131, thus ensuring the stability of the seal. In addition, when installing the seal 140, the seal 140 can be placed on the stepped surface a3, and then the main body 135 and the connecting cylinder 136 can be moved relative to each other along the extension direction of the mounting hole 131. While the sealing space 132 is defined by the outer wall surface of the connecting cylinder 136, the inner wall surface of the assembly hole 1351, and the stepped surface a3, the limiting member 150 abuts against the seal 140, thereby improving the ease of installation of the seal 140 by utilizing the stepped surface a3.

[0136] In some embodiments of this application, such as Figures 3 to 7 As shown, the connecting cylinder 136 includes a first cylinder section 1361 and a second cylinder section 1362. Along the extending direction of the mounting hole 131, the first cylinder section 1361 is connected to the end of the second cylinder section 1362 facing away from the external structure 500, and the interior of the first cylinder section 1361 and the interior of the second cylinder section 1362 are connected and form at least a portion of the mounting hole 131. The assembly hole 1351 includes a first hole section a1 and a second hole section a2. Along the extending direction of the mounting hole 131, the first hole section a1 is located on the side of the second hole section a2 facing away from the external structure 500. Along the radial direction of the mounting hole 131, the outer wall surface of the first cylinder section 1361 and the inner wall surface of the first hole section a1 are spaced apart to form an annular sealing space 132, and the outer wall surface of the second cylinder section 1362 is connected to the inner wall surface of the second hole section a2.

[0137] It should be explained that both the first cylindrical section 1361 and the second cylindrical section 1362 are cylindrical structures. Along the extension direction of the mounting hole 131, the first cylindrical section 1361 has a first channel inside, and the second cylindrical section 1362 has a second channel inside. The first channel and the second channel are connected to form at least a portion of the mounting hole 131.

[0138] The first cylindrical section 1361 and the second cylindrical section 1362 can be integrally formed, or the first cylindrical section 1361 and the second cylindrical section 1362 can be separate structures, after the first cylindrical section 1361 and the second cylindrical section 1362 are processed separately, and then the first cylindrical section 1361 and the second cylindrical section 1362 are connected.

[0139] With the above configuration, the connecting cylinder 136 is composed of a first cylinder segment 1361 and a second cylinder segment 1362, and the assembly hole 1351 is composed of a first hole segment a1 and a second hole segment a2. Along the extension direction of the mounting hole 131, the first cylinder segment 1361 and the first hole segment a1 are located on one side, and the second cylinder segment 1362 and the second hole segment a2 are located on the other side. During actual assembly, the connecting cylinder 136 and the assembly hole 1351 are moved relative to each other along the extension direction of the mounting hole 131. When they are moved into place, the outer wall surface of the first cylinder segment 1361 and the outer wall surface of the first hole segment a1 are spaced apart to form an annular sealing space 132, while the outer wall surface of the second cylinder segment 1362 and the inner wall surface of the second hole segment a2 are connected to each other, so that the connection position and the sealing position are arranged separately and do not interfere with each other, ensuring the convenience of assembling the mounting component 130 and placing the sealing component 140 in the sealing space 132.

[0140] The outer wall surface of the second cylindrical section 1362 and the inner wall surface of the second hole section a2 can be fixedly connected or detachably connected. When fixedly connected, the outer wall surface of the second cylindrical section 1362 and the inner wall surface of the second hole section a2 can be welded, glued, or connected.

[0141] In some embodiments of this application, such as Figure 3 As shown, the outer wall surface of the second cylindrical section 1362 is detachably connected to the inner wall surface of the second hole section a2.

[0142] The outer wall of the second cylindrical section 1362 and the inner wall of the second hole section a2 can be detachably connected by snap-fit ​​or threaded connection.

[0143] In some examples, a groove may be provided on the outer wall of the second cylindrical section 1362, and a buckle may be provided on the inner wall of the second hole section a2, so that the buckle extends into the groove to achieve a detachable connection between the second cylindrical section 1362 and the second hole section a2, and the buckle extends out of the groove to achieve separation between the second cylindrical section 1362 and the second hole section a2.

[0144] Through the above configuration, the detachable connection between the second cylindrical section 1362 and the second hole section a2 not only ensures the connection between the second cylindrical section 1362 and the second hole section a2, but also facilitates the separation of the second cylindrical section 1362 and the second hole section a2. In the event that at least one of the main body 135, the connecting cylinder 136, and the seal 140 needs to be replaced or repaired, the separation between the second cylindrical section 1362 and the second hole section a2 can realize the separation between the main body 135 and the connecting cylinder 136, while opening the sealing space 132, thus ensuring the convenience of maintenance and replacement of the mounting component 130 and the seal 140.

[0145] In some embodiments of this application, such as Figure 3As shown, the outer wall surface of the second cylindrical section 1362 has an external thread, and the inner wall surface of the second hole section a2 has an internal thread. The internal thread and the external thread are threadedly connected.

[0146] It is understood that the external thread is spirally provided on the outer wall surface of the second cylindrical section 1362 along the extension direction of the mounting hole 131, and the internal thread is spirally provided on the inner wall surface of the second cylindrical section a2 along the extension direction of the mounting hole 131. In addition, in order to ensure the connection or separation of the external thread and the internal thread, the second cylindrical section 1362 needs to be a cylindrical structure to meet the rotation requirements of the second cylindrical section 1362.

[0147] In some examples, the end of the first cylindrical section 1361 near the external structure 500 has an inwardly recessed polygonal groove structure. This polygonal groove structure is positioned along the extension direction of the mounting hole 131. The polygonal groove structure can be used to insert a polygonal rotary operating handle, allowing the operator to rotate the first cylindrical section 1361 using the handle. This, in turn, causes the second cylindrical section 1362, connected to the first cylindrical section 1361, to be screwed into the second hole a2, achieving a threaded connection between the external and internal threads. Alternatively, the operator can rotate the polygonal rotary operating handle to disengage the second cylindrical section 1362 from the second hole a2, separating the external and internal threads. The polygonal groove structure can be pentagonal or hexagonal, etc.

[0148] Through the above configuration, the second cylindrical section 1362 and the second hole section a2 are connected or separated through the external thread and the internal thread. The threaded connection can cope with various shaking conditions of the battery device 100 and ensure the stability of the connection. In addition, when the limiting member 150 is connected to the outer wall surface of the first cylindrical section 1361 or the inner wall surface of the first hole section a1, as the second cylindrical section 1362 is screwed into the second hole section a2, the limiting member 150 can gradually abut against the sealing member 140, so as to finally stably abut against the sealing member 140 in the sealing space 132, which facilitates the limiting member 150 to abut against and limit the sealing member 140.

[0149] In some embodiments of this application, such as Figure 6 As shown, the limiting member 150 is connected to part of the outer wall surface of the connecting cylinder 136, and the sealing member 140 abuts against the inner wall surface of the limiting member 150 and the assembly hole 1351.

[0150] In some examples, the connecting cylinder 136 includes a first cylinder segment 1361 and a second cylinder segment 1362, the assembly hole 1351 includes a first hole segment a1 and a second hole segment a2, a limiting member 150 is connected to the outer wall surface of the first cylinder segment 1361, and a sealing member 140 abuts against the inner wall surface of the limiting member 150 and the first hole segment a1. Thus, during assembly, the connecting cylinder 136 enters the assembly hole 1351 along the extending direction of the mounting hole 131. During this entry, the limiting member 150 on the first cylinder segment 1361 compresses the sealing member 140, thus limiting and fixing the sealing member 140. Once fully inserted, a sealing space 132 is formed between the first cylinder segment 1361 and the first hole segment a1, and the second cylinder segment 1362 and the second hole segment a2 are connected. This arrangement balances the ease of fixing the sealing member 140 with the ease of assembling the mounting member 130.

[0151] With the above configuration, the limiting member 150 is connected to part of the outer wall surface of the connecting cylinder 136. When assembling the connecting cylinder 136 and the main body 135, the connecting cylinder 136 enters the assembly hole 1351 of the main body 135 along the extension direction of the mounting hole 131. During the movement, the connecting cylinder 136 can drive the limiting member 150 to move synchronously, so as to use the limiting member 150 to gradually and evenly squeeze the sealing member 140. After moving into place, the limiting member 150 limits and fixes the sealing member 140, ensuring the stability of the sealing member 140.

[0152] In some embodiments of this application, such as Figures 3 to 7 As shown, the clearance groove 134 is located on the inner wall surface of the assembly hole 1351, and part of the seal 140 abuts between the limiting member 150 and the clearance groove 134.

[0153] In some examples, the connecting cylinder 136 includes a first cylinder section 1361 and a second cylinder section 1362, the assembly hole 1351 includes a first hole section a1 and a second hole section a2, the limiting member 150 is connected to the outer wall surface of the first cylinder section 1361, the clearance groove 134 is located on the inner wall surface of the second hole section a2, and the sealing member 140 abuts between the limiting member 150 and the clearance groove 134. During assembly, the connecting cylinder 136 extends into the assembly hole 1351 along the extension direction of the mounting hole 131. During this process, the limiting member 150 on the first cylinder section 1361 will squeeze the sealing member 140. During the squeezing process, part of the sealing member 140 deforms to enter the relief groove 134, thus completing the limiting and fixing of the sealing member 140. After entering the position, a sealing space 132 is formed between the first cylinder section 1361 and the first hole section a1. The second cylinder section 1362 and the second hole section a2 are connected, which takes into account the convenience and stability of the limiting and fixing of the sealing member 140 as well as the convenience of assembling the mounting member 130.

[0154] With the above configuration, when assembling the connecting cylinder 136 and the main body 135, the connecting cylinder 136 enters the assembly hole 1351 of the main body 135 along the extension direction of the mounting hole 131. During the movement, the connecting cylinder 136 can drive the limiting member 150 to move synchronously, so that the limiting member 150 can gradually and evenly squeeze the sealing member 140, and cause part of the sealing member 140 to enter the relief groove 134 under the squeezing of the limiting member 150. Finally, after the connecting cylinder 136 moves into place, the sealing member 140 abuts between the limiting member 150 and the relief groove 134, so as to realize the limiting and fixing of the sealing member 140 at the same time as the assembly, which facilitates the setting of the sealing member 140.

[0155] In some embodiments of this application, such as Figures 3 to 5 As shown, both the seal 140 and the limiting member 150 extend around the entire circumference of the annular sealing space 132.

[0156] The seal 140 extends around the annular sealing space 132 in one full circle, or it can extend multiple full circles in a thread-like structure. Similarly, the limiting member 150 extends around the annular sealing space 132 in one full circle, or it can extend multiple full circles in a spiral-like structure.

[0157] In some examples, the clearance groove 134 extends around the entire circumference of the annular sealing space 132 to accommodate the seal 140 and the limiter 150 extending around the entire circumference of the annular sealing space 132. Thus, along the circumference of the mounting hole 131, the seal 140 can be stably abutted between the limiter 150 and the clearance groove 134, ensuring the stability of the seal 140.

[0158] With the above configuration, the limiting member 150 and the sealing member 140 extend around the annular sealing space 132, ensuring that the sealing member 140 is subjected to the resisting force from the limiting member 150 in the circumferential direction along the mounting hole 131, reducing the probability of local instability of the sealing member 140, and making the overall fixing of the sealing member 140 more reliable.

[0159] In some embodiments of this application, an electrical device is also provided. The electrical device includes an external structure 500, a battery device 100 as described in any of the above embodiments, and a connection structure 400. The connection structure 400 includes a first part 410 and a second part 420. The first part 410 passes through the mounting hole 131 of the battery device 100, and the second part 420 is located on the side where the mounting end face 133 of the battery device 100 is located. The external structure 500 is sandwiched between the second part 420 and the mounting end face 133.

[0160] In some examples, the connecting structure 400 is a bolt, which includes a first part 410 and a second part 420. The first part 410 is the shank of the bolt, and the second part 420 is the head of the bolt. The shank of the bolt passes through the mounting hole 131 and is connected to the hanger 130. The head of the bolt is located on the side where the mounting end face 133 is located. The external structure 500 is clamped between the head of the bolt and the mounting end face 133, thereby realizing the connection between the external structure 500 and the hanger 130. The bolt improves the convenience of connecting the hanger 130 and the external structure 500.

[0161] Along the extension direction of the mounting hole 131, the bolt has a through hole that connects the mounting hole 131 and the external space. Thus, a mating structure that mates with the bolt can be set at the other end of the mounting hole 131 (the end where the bolt head is located) as needed. The mating structure passes through the mounting hole 131 and the through hole to make a mating connection. The mating of the connection structure 400 and the mating structure can ensure the stability of the connection.

[0162] Additionally, external structure 500 can refer to a mounting plate on the main body of the electrical equipment. For example, external structure 500 can be a mounting plate on the main body of vehicle 1000 or a mounting plate on the main body of aircraft.

[0163] With the above configuration, since the electrical device includes the battery device 100 in any of the above embodiments, the limiting member 150 protrudes along the first direction and is connected to the inner wall of the sealed space 132. The sealing member 140 at least abuts against the limiting member 150 and the inner wall of the sealed space 132. The clamping force between the limiting member 150 and the inner wall of the sealed space 132 can firmly limit the sealing member 140 within the sealed space 132, thereby ensuring the stability of the sealing member 140 and the sealing stability between the mounting end face 133 and the external structure 500. Moreover, when the external structure 500 is disassembled, the sealing member 140 is not easily pulled out of the sealed space 132 due to adhesion to the external structure 500. Thus, when the external structure 500 is reconnected, the sealing between the mounting end face 133 and the external structure 500 will not be affected due to the omission of the sealing member 140, thus ensuring the sealing of the connection interface between the mounting end face 133 and the external structure 500.

[0164] In some embodiments of this application, the first portion 410 and the mounting hole 131 are threaded together.

[0165] In some examples, the outer side of the first portion 410 has a first threaded portion along the radial direction of the mounting hole 131, and the inner wall surface of the mounting hole 131 has a second threaded portion. The threaded connection between the first portion 410 and the mounting hole 131 is achieved through the threaded connection of the first threaded portion and the second threaded portion.

[0166] With the above settings, the threaded connection between the first part 410 and the mounting hole 131 can provide the second part 420 with a uniform locking force acting on the external structure 500, so that the external structure 500 and the mounting end face 133 fit tightly together, ensuring the sealing stability between the external structure 500 and the mounting end face 133. Moreover, the threaded connection can also cope with various shaking conditions of electrical equipment.

[0167] To better understand this application, in conjunction with Figures 3 to 7 As shown, the battery device 100 of this application will be described in some embodiments below.

[0168] When connecting the battery device 100 and the external structure 500, the sealing member 140 is placed on the stepped surface a3, and the mounting hole 1351 in the main body 135 is aligned along the extending direction of the mounting hole 131. Then, the connecting cylinder 136 is rotated. During the rotation, the limiting member 150 on the first cylinder section 1361 of the connecting cylinder 136 rotates with the connecting cylinder 136. The external thread on the second cylinder section 1362 of the connecting cylinder 136 and the inner part of the second hole section a2 of the mounting hole 1351 are aligned. In the threaded connection of the threaded part, the limiting member 150 can compress the seal 140, causing partial deformation of the seal 140, which then partially enters the relief groove 134 on the inner wall surface of the first hole section a1 of the assembly hole 1351. After rotation into place, the outer wall surface of the first cylindrical section 1361, the step surface a3, and the inner wall surface of the first hole section a1 together form a sealing space 132. At this time, the seal 140 is also located exactly in the sealing space 132, and the assembly of the main body 135 and the connecting cylinder 136 is also completed. When it is necessary to disassemble the main body 135 and the connecting cylinder 136, the connecting cylinder 136 is rotated relative to the main body 135, causing the second cylindrical section 1362 and the second hole section a2 to separate. At the same time, the limiting member 150 and the seal 140 gradually separate, and finally the force exerted by the limiting member 150 on the limiting member 150 disappears, the main body 135 and the connecting cylinder 136 separate, and the seal 140 can be replaced.

[0169] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: Box; A mounting component is attached to the outside of the housing. The mounting component has an internal mounting hole and a sealing space. Along the extending direction of the mounting hole, at least one side of the mounting component includes a mounting end face. The sealing space is arranged circumferentially along the mounting hole and extends through the mounting end face. The mounting hole is used to pass through a first part of the connecting structure. A second part of the connecting structure is located on the side where the mounting end face is located, and the second part and the mounting end face are used to clamp an external structure. A sealing element is disposed within the sealing space and arranged circumferentially along the mounting hole. Along the extending direction of the mounting hole, the sealing element abuts against the side of the external structure facing the mounting end face. A limiting member protrudes along a first direction and is connected to the inner wall surface of the sealed space, and the sealing member at least abuts between the limiting member and the inner wall surface of the sealed space; Wherein, the first direction intersects with the extension direction of the mounting hole.

2. The battery device according to claim 1, characterized in that, The first direction is perpendicular to the extension direction of the mounting hole.

3. The battery device according to claim 1, characterized in that, The inner wall of the sealed space has a recessed clearance groove. Along the first direction, the clearance groove is located on the side of the sealing member away from the limiting member. Projected along the first direction onto the same projection plane, at least a portion of the projection of the limiting member overlaps with the projection of the opening of the clearance groove. A portion of the sealing member abuts between the limiting member and the clearance groove.

4. The battery device according to claim 3, characterized in that, The recessed direction of the clearance groove is parallel to the first direction.

5. The battery device according to claim 3, characterized in that, Both the limiting member and the clearance groove are arranged circumferentially along the mounting hole.

6. The battery device according to claim 1, characterized in that, The limiting member is arranged circumferentially along the mounting hole.

7. The battery device according to any one of claims 1-6, characterized in that, The mounting component includes a main body and a connecting cylinder. The main body has an assembly hole, and the connecting cylinder is connected to the assembly hole. The connecting cylinder includes a mounting hole. Along the extending direction of the mounting hole, the end face of the main body facing the external structure and the end face of the connecting cylinder facing the external structure together constitute the mounting end face. Along the radial direction of the mounting hole, a portion of the outer wall surface of the connecting cylinder is spaced apart from the inner wall surface of the assembly hole to form an annular sealing space.

8. The battery device according to claim 7, characterized in that, The mounting hole is a stepped hole, comprising a first hole segment and a second hole segment. Along the extension direction of the mounting hole, the first hole segment is located on the side of the second hole segment away from the external structure. The diameter of the first hole segment is smaller than the diameter of the second hole segment, so as to form a stepped surface between the first hole segment and the second hole segment. The outer wall surface of the connecting cylinder, the inner wall surface of the second hole segment, and the stepped surface together define the sealing space, and the sealing element is supported on the stepped surface.

9. The battery device according to claim 7, characterized in that, The connecting cylinder includes a first cylinder section and a second cylinder section. Along the extension direction of the mounting hole, the first cylinder section is connected to the end of the second cylinder section opposite to the external structure, and the interior of the first cylinder section and the interior of the second cylinder section are connected and constitute at least a part of the mounting hole; the assembly hole includes a first hole section and a second hole section. Along the extension direction of the mounting hole, the first hole section is located on the side of the second hole section opposite to the external structure. Along the radial direction of the mounting hole, the outer wall surface of the first cylindrical section and the inner wall surface of the first hole section are spaced apart to form an annular sealing space, and the outer wall surface of the second cylindrical section is connected to the inner wall surface of the second hole section.

10. The battery device according to claim 9, characterized in that, The outer wall of the second cylindrical section is detachably connected to the inner wall of the second orifice section.

11. The battery device according to claim 10, characterized in that, The outer wall surface of the second cylindrical section has an external thread, and the inner wall surface of the second hole section has an internal thread, wherein the internal thread is threadedly connected to the external thread.

12. The battery device according to claim 7, characterized in that, The limiting member is connected to a portion of the outer wall surface of the connecting cylinder, and the sealing member abuts against the inner wall surface of the limiting member and the assembly hole.

13. The battery device according to claim 12, characterized in that, The clearance groove is located on the inner wall surface of the assembly hole, and a portion of the seal abuts between the limiting member and the clearance groove.

14. The battery device according to claim 7, characterized in that, Both the sealing element and the limiting element extend around the entire circumference of the annular sealing space.

15. An electrical appliance, characterized in that, include: External structure and the battery device according to any one of claims 1-14; The connection structure includes a first part and a second part. The first part passes through the mounting hole of the battery device, and the second part is located on one side of the mounting end face of the battery device. The external structure is sandwiched between the second part and the mounting end face.

16. The electrical equipment according to claim 15, characterized in that, The first part and the mounting hole are threaded together.

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