Battery device and electric device

Abstract

The application provides a battery device and a power utilization device. The battery device comprises a box body, a mounting assembly, a first sealing member and a second sealing member. The box body has a containing cavity. The box body comprises a first plate body. The containing cavity is located at one side of the first plate body along a first direction. A first through hole is formed in the first plate body and penetrates the first plate body along the first direction. The mounting assembly penetrates the first through hole and is connected to the first plate body. The first sealing member is connected between the mounting assembly and the first plate body. The second sealing member is connected between the mounting assembly and the first plate body. The first sealing member is located upstream of the second sealing member along a path of an external medium entering the containing cavity from outside the box body through a gap between the mounting assembly and the first plate body. According to the application, the sealing reliability of the battery device can be effectively improved.

Description

Technical Field

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

[0002] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0003] In the development of battery technology, improving the sealing reliability of battery devices is an ongoing research direction. Utility Model Content

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

[0005] In a first aspect, embodiments of this application provide a battery device, which includes a housing, a mounting assembly, a first seal, and a second seal. The housing has a receiving cavity and includes a first plate. The receiving cavity is located on one side of the first plate along a first direction. A first through hole is formed on the first plate, penetrating the first plate along the first direction. The mounting assembly passes through the first through hole and is connected to the first plate. The first seal is connected between the mounting assembly and the first plate. The second seal is connected between the mounting assembly and the first plate, and enters the receiving cavity from outside the housing through the gap between the mounting assembly and the first plate along an external medium. The first seal is located upstream of the second seal.

[0006] By sequentially installing a first seal and a second seal along the path from the outside of the housing through the gap between the mounting assembly and the first plate into the receiving cavity, the first seal can first block external media such as water vapor and salt spray, reducing the amount of external media reaching the second seal. This can reduce the direct and continuous erosion of the second seal by external media, improve the service life of the second seal, and reduce the risk of external media entering the receiving cavity after the failure of a single seal position, thereby effectively improving the sealing reliability of the battery device.

[0007] In some embodiments of the first aspect, the mounting assembly includes a first sleeve and a second sleeve, which are interconnected via a first through-hole. At least a portion of the first sleeve is connected to a surface of the first plate facing away from the receiving cavity, and the second sleeve is connected to a surface of the first plate facing the receiving cavity. A first seal is connected between the first sleeve and the first plate, and a second seal is connected between the second sleeve and the first plate.

[0008] By setting up a first sleeve and a second sleeve, during the process of the first sleeve and the second sleeve being connected to each other, the two sleeves can clamp the first plate from both sides of the first plate and press the first seal and the second seal respectively, thereby completing the installation of the mounting component and the pressing of the first seal and the second seal simultaneously. There is no need to set up separate assembly structures for fixing the first seal and the second seal, which helps to simplify the assembly steps and improve the assembly efficiency.

[0009] In some embodiments of the first aspect, the first sleeve includes a first body portion and a first flange portion connected together. The first body portion passes through a first through hole and is connected to the second sleeve. The first flange portion protrudes from the outer peripheral surface of the first body portion and is connected to the side surface of the first plate body facing away from the receiving cavity. The first seal is connected to the outer peripheral surface of the first flange portion.

[0010] By connecting the first seal to the outer peripheral surface of the first flange, the first seal can be positioned at the outer edge of the connection interface between the first flange and the first plate, thereby blocking the external medium before it enters the connection interface. Furthermore, by connecting the first seal to the outer peripheral surface of the first flange, the first seal can be pre-installed on the first sleeve and assembled onto the first plate as a whole with the first sleeve. This eliminates the need for separate placement and positioning of the first seal during the connection process between the first sleeve and the first plate, simplifying the assembly operation and improving assembly efficiency and consistency.

[0011] In some embodiments of the first aspect, the first sleeve further includes a protrusion that is connected to and protrudes from the outer peripheral surface of the first flange. The first seal has a first recess on the side facing the first flange, and at least a portion of the protrusion is received within the first recess.

[0012] By having at least a portion of the protrusion accommodated within the first recess, the protrusion and the first recess can form a fitting structure between the first seal and the first flange. This fitting structure increases the connection area between the first seal and the first flange and restricts the movement of the first seal relative to the first flange along a first direction, reducing the risk of the first seal falling off, shifting, or flipping. Simultaneously, the protrusion can provide a positioning basis for the assembly of the first seal, facilitating control over the placement position of the first seal on the outer periphery of the first flange, and improving the assembly efficiency and positional consistency of the first seal.

[0013] Furthermore, when the first sleeve and the second sleeve are connected and clamp the first plate, the protrusion can press against the inner wall of the first recess and transmit the clamping force on the first sleeve to the first seal, providing pressure towards the first plate to improve sealing reliability.

[0014] In some embodiments of the first aspect, in a first direction, the first seal protrudes from the side surface of the first flange facing the first plate.

[0015] By making the first seal protrude from the side of the first flange facing the first plate, a compression allowance can be reserved for the first seal. After the first sleeve and the second sleeve are connected, the first seal can be pressed tightly between the first flange and the first plate, generating continuous sealing pressure. This arrangement can also compensate for machining and assembly errors of the first flange, the first plate, and the first seal, reducing the risk of gaps forming between the first seal and the first plate due to insufficient compression, thereby improving the sealing reliability between the first sleeve and the first plate.

[0016] In some embodiments of the first aspect, the orthographic projections of the first seal and the second seal are spaced apart in the same plane perpendicular to the first direction.

[0017] By spacing the orthographic projections of the first and second seals, they can be located in different stress zones. When the first and second sleeves are connected and clamp the first plate, they can obtain compression amounts adapted to their respective structures, reducing the risk of mutual interference between the first and second seals during stress and compression deformation, thereby further improving the sealing reliability of the battery device.

[0018] In some embodiments of the first aspect, the second sleeve has a second recess on the side facing the first plate, and at least a portion of the second seal is disposed within the second recess.

[0019] By placing at least a portion of the second seal within the second recess, the second recess can accommodate and position the second seal, restricting its radial movement along the second sleeve and facilitating alignment of the second seal with the sealing position of the first plate. Simultaneously, it reduces the space occupied by the second seal, contributing to improved energy density of the battery device.

[0020] In some embodiments of the first aspect, the second sleeve includes a second body portion and a second flange portion, the second flange portion being connected to one end of the second body portion along a first direction, the second flange portion protruding from the outer peripheral surface of the second body portion, the second flange portion being connected to the side surface of the first plate body facing the receiving cavity, and a second seal being connected between the second flange portion and the first plate body.

[0021] By providing a second flange, the contact area between the second sleeve and the first plate can be increased, which not only improves the connection reliability between the second sleeve and the first plate, but also helps to improve the stress state and uniformity of compression deformation of the second seal, thereby improving the sealing reliability between the second sleeve and the first plate.

[0022] In some embodiments of the first aspect, the housing further includes a first beam and a second plate, the second plate being disposed opposite to the first plate along a first direction, the first beam being connected to the side of the second plate facing the receiving cavity, and a mounting assembly connecting the first beam, the first plate, and the second plate.

[0023] By connecting the mounting assembly to the first beam, the first plate, and the second plate simultaneously, the load on the mounting assembly can be transferred to the first beam, the first plate, and the second plate, reducing the risk of concentrated load acting on a single area. The first beam can reinforce the mounting position of the second plate, which helps improve the stress state of the second plate under load, reduces the risk of local deformation near the mounting position, and improves the overall structural stability and reliability of the battery device.

[0024] In some embodiments of the first aspect, the mounting assembly includes a second sleeve and a third sleeve. A second through hole is provided on the first beam, penetrating the first beam along a first direction. The second sleeve and the third sleeve are connected to each other through the second through hole. The end of the second sleeve away from the third sleeve along the first direction is connected to the first plate, and the end of the third sleeve away from the second sleeve along the first direction is connected to the second plate.

[0025] By connecting the second sleeve and the third sleeve through the second through hole, the assembly position of the second sleeve and the third sleeve can be defined and guided by the second through hole, which facilitates the alignment and connection of the two along the first direction, reduces the risk of radial misalignment during assembly, and improves assembly efficiency.

[0026] In some embodiments of the first aspect, the battery device further includes a third seal connected between the third sleeve and the second sleeve.

[0027] By setting a third sealing element, the sealing performance between the second and third sleeves can be improved, thereby further improving the overall sealing reliability of the battery device.

[0028] In some embodiments of the first aspect, the second sleeve abuts between the first plate and the first beam.

[0029] By abutting between the first plate and the first beam, the second sleeve provides support between them and transfers the clamping force acting on the first plate to the first beam. When the mounting assembly is connected or subjected to mounting loads, this arrangement helps improve the stress state near the mounting position of the first plate, reducing the risk of excessive deformation of the first plate towards the first beam. Simultaneously, the second sleeve limits the distance between the first plate and the first beam, facilitating the assembly of the mounting assembly.

[0030] In some embodiments of the first aspect, the second sleeve includes a second main body, a second flange, and a third flange. The second flange and the third flange are respectively connected to both ends of the second main body along a first direction. Both the second flange and the third flange protrude from the outer peripheral surface of the second main body. The second flange is connected to the first plate, and the third flange is connected to the first beam.

[0031] By providing a second and third flange, the contact area between the second sleeve and the first plate, as well as between the second sleeve and the first beam, can be increased. This disperses the forces acting on the second sleeve over a larger area, reducing the risk of localized stress concentration. Consequently, this improves the stress distribution at both ends of the second sleeve, reduces the risk of localized deformation of the first plate and first beam near the connection point, and enhances the reliability of the connection between the second sleeve and the first plate and beam.

[0032] In some embodiments of the first aspect, a third through hole is provided on the second plate, the third through hole penetrating the second plate along a first direction, and the orthographic projection of the second through hole and the orthographic projection of the third through hole at least partially overlap in the same plane perpendicular to the first direction. The third sleeve includes a third main body and a fourth flange, the fourth flange being connected to the end of the third main body away from the second sleeve along the first direction, the fourth flange protruding from the outer peripheral surface of the third main body, the third main body passing through the second through hole and the third through hole, and the fourth flange being connected to the side surface of the second plate facing away from the receiving cavity.

[0033] By having the third main body portion pass sequentially through the second and third through holes, multiple positioning points can be achieved using these holes, facilitating alignment and connection between the third main body portion and the second sleeve, and improving the assembly convenience and positional consistency of the third sleeve. The fourth flange protrudes from the outer circumference of the third main body portion, increasing the interaction area between the third sleeve and the second plate. This disperses the force on the third sleeve over a larger area of ​​the second plate, reducing the risk of localized deformation near the connection point and improving the reliability of the connection between the third sleeve and the second plate.

[0034] In some embodiments of the first aspect, the battery device further includes a fourth seal connected between the fourth flange and the second plate.

[0035] By connecting the fourth seal between the fourth flange and the second plate, the elastic deformation of the fourth seal can fill the gap between the fourth flange and the second plate, and seal the outer periphery of the third through hole, reducing the risk of external media entering the cavity through the third through hole from the side of the second plate facing away from the cavity. Simultaneously, the fourth flange provides a larger compression and support area for the fourth seal, which helps improve the stress state and compression uniformity of the fourth seal, thereby enhancing the sealing reliability between the third sleeve and the second plate.

[0036] In some embodiments of the first aspect, the housing further includes a third plate connected to the side of the fourth flange facing away from the second plate.

[0037] By connecting the third plate to the side of the fourth flange facing away from the second plate, the third plate can shield the fourth flange and its connection point with the second plate, reducing the risk of direct impact from external foreign objects onto the fourth flange. Simultaneously, the third plate provides an additional connection point for the fourth flange, which helps limit its movement relative to the second plate and improves the connection stability of the mounting assembly.

[0038] In some embodiments of the first aspect, the battery device further includes a fifth seal connected between the fourth flange and the third plate.

[0039] By connecting the fifth seal between the fourth flange and the third plate, the elastic deformation of the fifth seal can fill the assembly gap between the two, reducing the risk of external media such as water vapor and salt spray seeping in along the connection interface between the fourth flange and the third plate.

[0040] In some embodiments of the first aspect, a fourth through hole is provided on the third plate, the fourth through hole penetrating the third plate along a first direction. The battery device also includes a fourth sleeve, the fourth sleeve being interconnected with the third main body via the fourth through hole, the fourth sleeve being connected to the side of the third plate facing away from the fourth flange.

[0041] The fourth sleeve and the fourth flange can clamp the third plate from both sides, which helps to improve the connection stability between the third plate and the mounting assembly.

[0042] Secondly, this application provides an electrical device that includes a battery device provided in any embodiment of the first aspect, the battery device being used to store or provide electrical energy.

[0043] 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

[0044] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 These are schematic diagrams of the vehicle structure provided in some embodiments of this application; Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application; Figure 3 This is a top view of a battery device provided in some embodiments of this application; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA; Figure 5 This is a top view schematic diagram of the first sleeve and the first seal of a battery device provided in some embodiments of this application; Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure along BB.

[0045] The reference numerals in the detailed embodiments are as follows: 1. Vehicle; 2. Battery unit; 3. Controller; 4. Motor; 10. Box body; 11. Receiving cavity; 12. First plate; 121. First through hole; 13. First beam; 131. Second through hole; 14. Second plate; 141. Third through hole; 15. Third plate; 151. Fourth through hole; 20. Mounting components; 21. First sleeve; 211. First main body; 212. First flange; 213. Protrusion; 22. Second sleeve; 220. Second recess; 221. Second main body; 222. Second flange; 223. Third flange; 23. Third sleeve; 231. Third main body; 232. Fourth flange; 24. Fourth sleeve; 30. First seal; 31. First recess; 40. Second seal; 50. Third seal; 60. Fourth seal; 70. Fifth seal; 80. Battery cell; X, the first direction. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application 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 drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0048] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0051] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0052] In this application, "multiple" means two or more (including two).

[0053] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0054] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0055] In the development of battery technology, improving the sealing reliability of battery devices is an ongoing research direction.

[0056] In related technologies, the connection between the battery mounting components and the housing is typically only sealed with a single layer of seal. External moisture, salt spray, and other media can easily seep in along the interface between the mounting components and the housing, continuously corroding the seals and gradually reducing their sealing performance, thus affecting the overall sealing reliability of the battery device.

[0057] Based on the above considerations, this application designs a battery device, which includes a housing, a mounting assembly, a first seal, and a second seal. The housing has a receiving cavity and includes a first plate. The receiving cavity is located on one side of the first plate along a first direction. A first through hole is formed on the first plate, penetrating the first plate along the first direction. The mounting assembly passes through the first through hole and is connected to the first plate. The first seal is connected between the mounting assembly and the first plate. The second seal is connected between the mounting assembly and the first plate. The first seal is located upstream of the second seal, along the path from the outside of the housing through the gap between the mounting assembly and the first plate into the receiving cavity via an external medium.

[0058] By sequentially installing a first seal and a second seal along the path from the outside of the housing through the gap between the mounting assembly and the first plate into the receiving cavity, the first seal can first block external media such as water vapor and salt spray, reducing the amount of external media reaching the second seal. This can reduce the direct and continuous erosion of the second seal by external media, improve the service life of the second seal, and reduce the risk of external media entering the receiving cavity after the failure of a single seal position, thereby effectively improving the sealing reliability of the battery device.

[0059] The battery device described in this application can be used, but is not limited to, in vehicles, and can also be used in other electrical devices. For example, the electrical device can be a device that uses the battery device as a power source or various energy storage systems that use the battery device as an energy storage element. The electrical device 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.

[0060] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0061] Figure 1 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0062] like Figure 1 As shown, a battery device 2 is installed inside the vehicle 1. The battery device 2 can be located at the bottom, front, or rear of the vehicle 1. The battery device 2 can be used to power the vehicle 1; for example, the battery device 2 can serve as the operating power source for the vehicle 1.

[0063] The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0064] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0065] Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application. Figure 3 This is a top view schematic diagram of a battery device provided in some embodiments of this application. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure along AA. Figure 5 This is a top view schematic diagram of the first sleeve and the first seal of a battery device provided in some embodiments of this application. Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure along BB.

[0066] Continue to refer to Figures 2 to 6This application provides a battery device 2, which includes a housing 10, a mounting assembly 20, a first seal 30, and a second seal 40. The housing 10 has a receiving cavity 11 and includes a first plate 12. The receiving cavity 11 is located on one side of the first plate 12 along a first direction X. A first through hole 121 is formed on the first plate 12, penetrating the first plate 12 along the first direction X. The mounting assembly 20 passes through the first through hole 121 and is connected to the first plate 12. The first seal 30 is connected between the mounting assembly 20 and the first plate 12, and the second seal 40 is connected between the mounting assembly 20 and the first plate 12. The first seal 30 is located upstream of the second seal 40, along the path from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12 into the receiving cavity 11 via an external medium.

[0067] The housing 10 forms the external protective structure of the battery device 2. An internal cavity 11 is formed within the housing 10, which can accommodate the battery cell 80 and other functional components. A first plate 12 constitutes at least a portion of the wall of the housing 10, and the first direction X can be the thickness direction of the first plate 12. The cavity 11 is located on one side of the first plate 12 along the first direction X, and the side of the first plate 12 opposite to the cavity 11 forms the exterior of the housing 10.

[0068] The first through hole 121 extends through the first plate 12 along the first direction X, allowing the mounting assembly 20 to pass through the first plate 12. The mounting assembly 20 passes through the first through hole 121 and is connected to the first plate 12, thereby transmitting the mounting force acting on the battery device 2 to the first plate 12. The mounting assembly 20 and the first plate 12 can be connected to each other by clamping, abutting, or other connection methods, forming a connection interface around the first through hole 121.

[0069] The mounting assembly 20 is used to install and secure the battery device 2 to the electrical device. Specifically, the mounting assembly 20 provides a mounting position for the battery device 2 and can connect to the load-bearing structure of the electrical device to secure the battery device 2 to the electrical device, while transferring the weight of the battery device 2 and the load it receives to the load-bearing structure of the electrical device. For example, in the case of a vehicle, the mounting assembly 20 can connect to the chassis of the vehicle to secure the battery device 2 to the chassis.

[0070] The first seal 30 and the second seal 40 are both connected between the mounting assembly 20 and the first plate 12, and respectively seal the gap between the mounting assembly 20 and the first plate 12. The first seal 30 and the second seal 40 can be arranged around the first through hole 121 to form a continuous sealing structure in the circumferential direction of the first through hole 121, reducing the possibility of external media bypassing the first seal 30 or the second seal 40 to enter the receiving cavity 11.

[0071] The first seal 30 is located upstream of the second seal 40. This means that the external medium travels from the outside of the housing 10 to the receiving cavity 11 along the path of the external medium. The external medium first passes through the sealing position of the first seal 30, and then passes through the sealing position of the second seal 40. The term "upstream" indicates the sequential relationship between the first seal 30 and the second seal 40 relative to the path of the external medium from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12 into the receiving cavity 11. It does not necessarily mean that the first seal 30 is spatially located above the second seal 40.

[0072] For example, a portion of the mounting assembly 20 may be located on both sides of the first plate 12 along the first direction X, and the mounting assembly 20 may be installed on the first plate 12 through a connecting fit. The first seal 30 and the second seal 40 are respectively disposed at different positions between the mounting assembly 20 and the first plate 12, and are arranged sequentially along the path of the external medium entering the receiving cavity 11 from the outside of the housing 10. Among them, the first seal 30 is closer to the outside of the housing 10 than the second seal 40, and the second seal 40 is closer to the receiving cavity 11 than the first seal 30.

[0073] Optionally, the first seal 30 and the second seal 40 may both be located on the side of the first plate 12 facing away from the receiving cavity 11 along the first direction X, or both may be located on the side of the first plate 12 facing the receiving cavity 11 along the first direction X.

[0074] Optionally, one of the first seal 30 and the second seal 40 is located on the side of the first plate 12 facing away from the receiving cavity 11 along the first direction X, and the other is located on the side of the first plate 12 facing the receiving cavity 11 along the first direction X.

[0075] After the mounting assembly 20 is connected to the first plate 12, the first seal 30 and the second seal 40 can be compressed between the mounting assembly 20 and the first plate 12 respectively to form seals at different connection points between the mounting assembly 20 and the first plate 12. The first seal 30 is used to initially block external media entering the gap between the mounting assembly 20 and the first plate 12, and the second seal 40 is used to further block external media that have passed through the first seal 30. Thus, the first seal 30 and the second seal 40 form a multi-layered sealing structure arranged sequentially along the path of external media entering the receiving cavity 11 from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12.

[0076] By sequentially installing a first seal 30 and a second seal 40 along the path from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12 into the receiving cavity 11, the first seal 30 can first block external media such as water vapor and salt spray, reducing the amount of external media reaching the second seal 40. This can reduce the direct and continuous erosion of the second seal 40 by external media, improve the service life of the second seal 40, and reduce the risk of external media entering the receiving cavity 11 after the failure of a single sealing position, thereby effectively improving the sealing reliability of the battery device 2.

[0077] In some embodiments, the enclosure 10 may be made of metallic materials, non-metallic materials, or composite materials. For example, the enclosure 10 may be made of steel, aluminum, aluminum alloy, magnesium alloy, engineering plastics, or fiber-reinforced composite materials. Different parts of the enclosure 10 may be made of the same material, or different materials may be used depending on the load-bearing, protection, and lightweight requirements of each part. The first plate 12 may be made of materials with a certain structural strength, such as steel, aluminum, or aluminum alloy.

[0078] In some embodiments, the mounting assembly 20 may be made of a metallic material, such as steel, stainless steel, aluminum, or aluminum alloy. Since the mounting assembly 20 is used to secure the battery device 2 to the electrical device and transmit the mounting load, using a metallic material with sufficient strength and rigidity can reduce the risk of excessive deformation of the mounting assembly 20 during load-bearing. The first sleeve 21 and the second sleeve 22 may be made of the same material, or different materials may be used depending on the stress requirements, manufacturing process, or lightweight requirements.

[0079] In some embodiments, the first plate 12 may be the top cover of the housing 10.

[0080] In some embodiments, the mounting assembly 20 includes a first sleeve 21 and a second sleeve 22, which are interconnected via a first through hole 121. At least a portion of the first sleeve 21 is connected to the side surface of the first plate 12 facing away from the receiving cavity 11, and the second sleeve 22 is connected to the side surface of the first plate 12 facing the receiving cavity 11. A first seal 30 is connected between the first sleeve 21 and the first plate 12, and a second seal 40 is connected between the second sleeve 22 and the first plate 12.

[0081] After the first sleeve 21 and the second sleeve 22 are connected, they can clamp the first plate 12 from both sides, thereby restricting the mounting assembly 20 from moving relative to the first plate 12 in the first direction X.

[0082] Both the first sleeve 21 and the second sleeve 22 are cylindrical structures. After the first sleeve 21 and the second sleeve 22 are connected, their internal spaces can communicate with each other to form a channel for fasteners to pass through. Fasteners can pass through this channel and be connected to the supporting structure of the electrical device to fix the battery device 2 to the electrical device. For example, in the case of a vehicle, the fasteners can be connected to the chassis of the vehicle, thereby mounting the battery device 2 to the chassis of the vehicle via the mounting assembly 20.

[0083] At least a portion of the first sleeve 21 is connected to the side surface of the first plate 12 facing away from the receiving cavity 11. This "connection" can include a direct connection between the first sleeve 21 and the first plate 12, or an indirect connection between the first sleeve 21 and the first plate 12 via the first seal 30. The second sleeve 22 is connected to the side surface of the first plate 12 facing the receiving cavity 11. Accordingly, the second sleeve 22 can be directly connected to the first plate 12, or indirectly connected to the first plate 12 via the second seal 40.

[0084] A first sealing element 30 is disposed between the first sleeve 21 and the first plate 12. After the first sleeve 21 and the second sleeve 22 are connected to each other, the first sealing element 30 can be compressed between the surfaces of the first sleeve 21 and the first plate 12 facing away from the receiving cavity 11, thereby sealing the connection interface between the first sleeve 21 and the first plate 12. A second sealing element 40 is disposed between the second sleeve 22 and the first plate 12, and can be compressed between the surfaces of the second sleeve 22 and the first plate 12 facing the receiving cavity 11, thereby sealing the connection interface between the second sleeve 22 and the first plate 12.

[0085] The external medium enters the receiving cavity 11 from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12. The external medium first reaches the connection between the first sleeve 21 and the first plate 12, and then reaches the connection between the second sleeve 22 and the first plate 12. Therefore, the first seal 30 is located upstream of the second seal 40. The first seal 30 can block external media such as water vapor and salt spray, thereby reducing the direct and continuous erosion of the second seal 40 by external media.

[0086] By setting up the first sleeve 21 and the second sleeve 22, during the process of connecting the first sleeve 21 and the second sleeve 22, the two can clamp the first plate 12 from both sides and press the first seal 30 and the second seal 40 respectively, thereby completing the installation of the mounting component 20 and the pressing of the first seal 30 and the second seal 40 simultaneously. There is no need to set up separate assembly structures for fixing the first seal 30 and the second seal 40, which helps to simplify the assembly steps and improve the assembly efficiency.

[0087] In some embodiments, the first sleeve 21 includes a first main body portion 211 and a first flange portion 212 connected together. The first main body portion 211 passes through the first through hole 121 and is connected to the second sleeve 22. The first flange portion 212 protrudes from the outer peripheral surface of the first main body portion 211 and is connected to the side surface of the first plate 12 facing away from the receiving cavity 11. The first seal 30 is connected to the outer peripheral surface of the first flange portion 212.

[0088] The first main body 211 can be a cylindrical structure extending along the first direction X. At least a portion of the first main body 211 passes through the first through hole 121 and extends into the receiving cavity 11 through the first through hole 121 to connect with the second sleeve 22 located on the side of the first plate 12 facing the receiving cavity 11. The first through hole 121 can radially limit the first main body 211 to facilitate the alignment and connection of the first main body 211 and the second sleeve 22, and reduce the risk of radial misalignment of the first sleeve 21 relative to the first plate 12.

[0089] The first flange portion 212 is disposed at one end of the first main body portion 211 near the outside of the housing 10, and protrudes radially from the outer peripheral surface of the first main body portion 211. The first flange portion 212 may be an annular structure surrounding the first main body portion 211. The first flange portion 212 is connected to the side surface of the first plate 12 facing away from the receiving cavity 11, so that the first flange portion 212 can restrict the movement of the first sleeve 21 toward the receiving cavity 11 in the first direction X, and increase the interaction area between the first sleeve 21 and the first plate 12, thereby improving the connection reliability between the first sleeve 21 and the first plate 12.

[0090] The first main body 211 and the first flange 212 can be integrally formed or formed separately and then connected to each other. The first flange 212 can be directly connected to the first plate 12 or indirectly connected via the first sealing element 30. After the first sleeve 21 is connected to the second sleeve 22, the first flange 212 can cooperate with the second sleeve 22 to clamp the first plate 12 from both sides along the first direction X, thereby installing the mounting assembly 20 onto the first plate 12.

[0091] The first sealing element 30 is connected to the outer peripheral surface of the first flange portion 212 and can be disposed around the first flange portion 212. After the first sleeve 21 and the second sleeve 22 are connected, the first sealing element 30 can be compressed to seal the connection interface between the first flange portion 212 and the first plate 12.

[0092] By connecting the first seal 30 to the outer peripheral surface of the first flange portion 212, the first seal 30 can be located at the outer edge of the connection interface between the first flange portion 212 and the first plate 12, thereby blocking the external medium before it enters the connection interface. Furthermore, by connecting the first seal 30 to the outer peripheral surface of the first flange portion 212, the first seal 30 can be pre-installed on the first sleeve 21 and assembled with the first sleeve 21 as a whole into the first plate 12. This eliminates the need for separate placement and positioning of the first seal 30 during the connection process between the first sleeve 21 and the first plate 12, thus simplifying the assembly operation of the first seal 30 and improving assembly efficiency and consistency.

[0093] For example, the first seal 30 and the first flange 212 can be connected by means of vulcanization, bonding or embedding.

[0094] In some embodiments, the first seal 30 can be connected to the outer peripheral surface of the first flange portion 212 by vulcanization. This involves applying the material used to form the first seal 30 to the outer peripheral surface of the first flange portion 212, and then molding and fixing the first seal 30 to the first flange portion 212 through vulcanization. In this way, the first seal 30 can form a pre-assembled whole with the first sleeve 21, facilitating the assembly of the first seal 30 along with the first sleeve 21 to the first plate 12, and reducing the risk of the first seal 30 falling off, shifting, or twisting during transportation or assembly.

[0095] In some embodiments, the first sleeve 21 further includes a protrusion 213, which is connected to the first flange portion 212 and protrudes from the outer peripheral surface of the first flange portion 212. The first seal 30 has a first recess 31 on the side facing the first flange portion 212, and at least a portion of the protrusion 213 is accommodated in the first recess 31.

[0096] For example, the protrusion 213 may extend continuously along the circumference of the first flange portion 212 to form an annular structure surrounding the first flange portion 212; or, the protrusion 213 may be provided in multiple forms, with the multiple protrusions 213 arranged at intervals along the circumference of the first flange portion 212.

[0097] The protrusion 213 and the first flange 212 can be connected by means of integral molding, welding or interference fit. As an example, the protrusion 213 can be integrally molded with the first flange 212 to reduce the number of parts of the first sleeve 21 and improve the connection stability between the protrusion 213 and the first flange 212.

[0098] The first seal 30 has a first recess 31 on the side facing the first flange portion 212. The first recess 31 is recessed relative to the surface of the first seal 30 facing the first flange portion 212. The shape and position of the first recess 31 are adapted to the protrusion 213, such that at least a portion of the protrusion 213 can be accommodated within the first recess 31. The first recess 31 may extend continuously along the circumference of the first seal 30, or it may include a plurality of recessed areas spaced apart along the circumference of the first seal 30.

[0099] By accommodating at least a portion of the protrusion 213 within the first recess 31, the protrusion 213 and the first recess 31 can form a fitting structure between the first seal 30 and the first flange portion 212. This fitting structure increases the connection area between the first seal 30 and the first flange portion 212 and restricts the movement of the first seal 30 relative to the first flange portion 212 along the first direction X, reducing the risk of the first seal 30 falling off, shifting, or flipping. Simultaneously, the protrusion 213 can provide a positioning basis for the assembly of the first seal 30, facilitating control of the placement position of the first seal 30 on the outer periphery of the first flange portion 212, and improving the assembly efficiency and positional consistency of the first seal 30.

[0100] Furthermore, when the first sleeve 21 is connected to the second sleeve 22 and clamps the first plate 12, the protrusion 213 can press against the inner wall of the first recess 31 and transmit the clamping force received by the first sleeve 21 to the first seal 30, providing the first seal 30 with pressure toward the first plate 12 to improve sealing reliability.

[0101] In some embodiments, the first seal 30 can be connected to the outer peripheral surface of the first flange portion 212 by vulcanization. During the vulcanization molding process of the first seal 30, the material used to form the first seal 30 covers at least a portion of the protrusion 213 and forms a first recess 31 at a position corresponding to the protrusion 213, so that the protrusion 213 is embedded in the first recess 31.

[0102] In some embodiments, in the first direction X, the first seal 30 protrudes from the side surface of the first flange 212 facing the first plate 12.

[0103] For example, when the first seal 30 is not compressed by the first plate 12, a portion of the first seal 30 is closer to the first plate 12 than the side surface of the first flange 212 facing the first plate 12, so as to protrude from the side surface of the first flange 212 facing the first plate 12.

[0104] Before the first sleeve 21 and the second sleeve 22 are connected in place, the sealing portion of the first seal 30 can contact the first plate 12 before the first flange portion 212. As the first sleeve 21 and the second sleeve 22 gradually connect and clamp the first plate 12 from both sides, the first plate 12 can press against the first seal 30, causing the first seal 30 to undergo compression deformation along the first direction X, and forming a sealing contact between the first sleeve 21 and the first plate 12. The protrusion 213 of the first sleeve 21 can also provide downward pressure toward the first plate 12 for the portion of the first seal 30 that protrudes from the first flange portion 212, thereby improving the compression effect of this portion.

[0105] By making the first seal 30 protrude from the side of the first flange 212 facing the first plate 12, a compression allowance can be reserved for the first seal 30. After the first sleeve 21 and the second sleeve 22 are connected, the first seal 30 can be pressed between the first flange 212 and the first plate 12, generating continuous sealing pressure. This arrangement can also compensate for machining and assembly errors of the first flange 212, the first plate 12, and the first seal 30, reducing the risk of gaps forming between the first seal 30 and the first plate 12 due to insufficient compression, thereby improving the sealing reliability between the first sleeve 21 and the first plate 12.

[0106] In some embodiments, the orthographic projections of the first seal 30 and the second seal 40 are spaced apart in the same plane perpendicular to the first direction X.

[0107] The orthographic projection of the first sealing element 30 and the orthographic projection of the second sealing element 40 are spaced apart, meaning that their orthographic projections do not overlap and there is a certain distance between them.

[0108] By setting the orthographic projections of the first seal 30 and the second seal 40 at intervals, the first seal 30 and the second seal 40 can be located in different stress areas. When the first sleeve 21 and the second sleeve 22 are connected and clamp the first plate 12, it is easier for both to obtain a compression amount adapted to their respective structures, reducing the risk of mutual interference between the first seal 30 and the second seal 40 during stress and compression deformation, thereby further improving the sealing reliability of the battery device 2.

[0109] In some embodiments, the second sleeve 22 is provided with a second recess 220 on the side facing the first plate 12, and at least a portion of the second seal 40 is disposed in the second recess 220.

[0110] For example, the second recess 220 may be formed recessed from the side surface of the second sleeve 22 toward the first plate 12 along the first direction X, and has an opening toward the first plate 12. As an example, the second recess 220 may be an annular groove provided around the first through hole 121, so that the second seal 40 housed in the second recess 220 can form a continuous annular sealing structure along the circumference of the second sleeve 22.

[0111] The second seal 40 and the second sleeve 22 can be connected by means of embedding, interference fit, or bonding. As an example, the second seal 40 can be embedded in the second recess 220 and interference-fitted with it. The cross-sectional width of the second seal 40 can be greater than the width of the second recess 220, so that after the second seal 40 is inserted into the second recess 220, it is compressed by the sidewall of the second recess 220, thereby confining the second seal 40 within the second recess 220 and reducing the risk of the second seal 40 falling off or shifting during the transportation or assembly of the second sleeve 22.

[0112] In its free state, the height of the second seal 40 along the first direction X can be greater than the depth of the second recess 220, causing at least a portion of the second seal 40 to protrude from the side surface of the second sleeve 22 facing the first plate 12. When the first sleeve 21 and the second sleeve 22 are connected to each other and clamp the first plate 12, the first plate 12 can press against the portion of the second seal 40 protruding from the second recess 220, compressing the second seal 40 along the first direction X and maintaining a sealing contact between the second seal 40 and the walls of the first plate 12 and the second recess 220, respectively.

[0113] By placing at least a portion of the second seal 40 within the second recess 220, the second recess 220 can accommodate and position the second seal 40, restricting its radial movement along the second sleeve 22, thus facilitating alignment of the second seal 40 with the position to be sealed on the first plate 12. Simultaneously, it reduces the space occupied by the second seal 40, contributing to an increase in the energy density of the battery device 2.

[0114] In some embodiments, the second sleeve 22 includes a second body portion 221 and a second flange portion 222. The second flange portion 222 is connected to one end of the second body portion 221 along a first direction X. The second flange portion 222 protrudes from the outer peripheral surface of the second body portion 221. The second flange portion 222 is connected to the side surface of the first plate 12 facing the receiving cavity 11. The second seal 40 is connected between the second flange portion 222 and the first plate 12.

[0115] The second main body 221 can be a cylindrical structure extending along the first direction X, and a through hole extending along the first direction X is formed inside the second main body 221. After the first sleeve 21 is connected to the second sleeve 22, the through hole of the second main body 221 can communicate with the through hole of the first main body 211 to jointly form a channel for fasteners to pass through.

[0116] The second main body 221 can be connected to the first main body 211 by means of threaded connection, snap-fit, or interference fit. As an example, the second main body 221 can be connected to the first main body 211 by thread. During assembly, the first main body 211 passes through the first through hole 121 and is threadedly engaged with the second main body 221. By tightening the first sleeve 21 and the second sleeve 22, the two clamp the first plate 12 from both sides along the first direction X.

[0117] The second flange portion 222 and the second body portion 221 can be connected by means of integral molding, welding, or interference fit. As an example, the second flange portion 222 can be integrally molded with the second body portion 221 to reduce the number of parts of the second sleeve 22 and improve the connection stability between the second flange portion 222 and the second body portion 221.

[0118] The second flange 222 can be indirectly connected to the first plate 12 by abutment or via the second seal 40. As an example, after the first sleeve 21 and the second sleeve 22 are tightened, the second flange 222 is pressed against the first plate 12 via the second seal 40, so that the second flange 222 can restrict the movement of the second sleeve 22 in the first direction X, and cooperate with the first flange 212 to clamp the first plate 12.

[0119] By providing the second flange 222, the contact area between the second sleeve 22 and the first plate 12 can be increased. This not only improves the connection reliability between the second sleeve 22 and the first plate 12, but also helps to improve the stress state and uniformity of compression deformation of the second seal 40, thereby improving the sealing reliability between the second sleeve 22 and the first plate 12.

[0120] In some embodiments, the second recess 220 is disposed on the second flange portion 222.

[0121] In some embodiments, the housing 10 further includes a first beam 13 and a second plate 14, the second plate 14 and the first plate 12 being disposed opposite to each other along a first direction X, the first beam 13 being connected to the side of the second plate 14 facing the receiving cavity 11, and the mounting assembly 20 connecting the first beam 13, the first plate 12 and the second plate 14.

[0122] The first beam 13 and the second plate 14 can be connected by welding, fasteners, riveting, or bonding. As an example, the first beam 13 can be fixedly connected to the second plate 14, allowing both to share the load transmitted by the mounting assembly 20. Alternatively, the first beam 13 and the second plate 14 can be detachably connected to facilitate the assembly and maintenance of the housing 10.

[0123] By simultaneously connecting the mounting assembly 20 to the first beam 13, the first plate 12, and the second plate 14, the mounting load on the mounting assembly 20 can be transferred to the first beam 13, the first plate 12, and the second plate 14, reducing the risk of the mounting load being concentrated on a single area. The first beam 13 can reinforce the mounting position of the second plate 14, which helps to improve the stress state of the second plate 14 under the action of the mounting load, reduces the risk of local deformation near the mounting position, and improves the overall structural stability and reliability of the battery device 2.

[0124] In some embodiments, the second plate 14 may be a heat exchange plate.

[0125] By setting the second plate 14 as a heat exchange plate, the second plate 14 can perform the heat exchange function while forming the housing 10 and supporting the mounting components 20. This helps to reduce the installation space and number of parts required for setting up a separate heat exchange structure, and improves the structural integration and space utilization of the housing 10.

[0126] In some embodiments, the mounting assembly 20 includes a second sleeve 22 and a third sleeve 23. A second through hole 131 is provided on the first beam 13, and the second through hole 131 penetrates the first beam 13 along a first direction X. The second sleeve 22 and the third sleeve 23 are connected to each other through the second through hole 131. The end of the second sleeve 22 away from the third sleeve 23 along the first direction X is connected to the first plate 12, and the end of the third sleeve 23 away from the second sleeve 22 along the first direction X is connected to the second plate 14.

[0127] Both the second sleeve 22 and the third sleeve 23 can be cylindrical structures extending along the first direction X, and their internal spaces are interconnected to form a channel through which fasteners for mounting the battery device 2 pass.

[0128] A second through hole 131 is provided on the first beam 13, and the second through hole 131 penetrates the first beam 13 along the first direction X. The second through hole 131 can be arranged opposite to the first through hole 121 along the first direction X, so as to facilitate the assembly of the second sleeve 22 and the third sleeve 23 along the first direction X. The shape of the second through hole 131 can be adapted to the portions of the second sleeve 22 and the third sleeve 23 that pass through the second through hole 131, thereby positioning the second sleeve 22 and the third sleeve 23 and reducing the risk of misalignment during the connection process.

[0129] The second sleeve 22 and the third sleeve 23 can be connected by means of threaded connection, snap-fit, or interference fit. As an example, the second sleeve 22 and the third sleeve 23 are connected by threads, with one of the second sleeve 22 and the third sleeve 23 having an external thread and the other having an internal thread that mates with the external thread. During assembly, the third sleeve 23 passes through the second through hole 131 and achieves the threaded connection by rotating relative to the second sleeve 22.

[0130] The second sleeve 22 can be connected to the first plate 12 by abutment, fastener connection, or indirectly through the second seal 40. The third sleeve 23 can be connected to the second plate 14 by abutment, threaded connection, fastener connection, or welding.

[0131] By connecting the second sleeve 22 and the third sleeve 23 through the second through hole 131, the assembly position of the second sleeve 22 and the third sleeve 23 can be defined and guided by the second through hole 131, which facilitates the alignment and connection of the two along the first direction X, reduces the risk of radial misalignment during assembly, and improves assembly efficiency.

[0132] In some embodiments, the battery device 2 further includes a third seal 50, which is connected between the third sleeve 23 and the second sleeve 22.

[0133] The third seal 50 is used to seal the connection gap between the third sleeve 23 and the second sleeve 22. The third seal 50 can be arranged around the third sleeve 23 to form a continuous annular sealing structure along the circumference of the third sleeve 23.

[0134] As an example, the third seal 50 can be an O-ring. The third seal 50 can be one or more; if the third seal 50 is multiple, the multiple third seals 50 can be spaced apart along the first direction X to form multiple seals between the second sleeve 22 and the third sleeve 23.

[0135] The third seal 50 and the third sleeve 23 can be connected by means of embedding, interference fit, or bonding. For example, the end of the third sleeve 23 facing the second sleeve 22 may have an extension portion that can be inserted into the second sleeve 22. The outer peripheral surface of the extension portion may have an annular groove, and at least a portion of the third seal 50 is accommodated within the annular groove. In the free state, the outer periphery of the third seal 50 may protrude beyond the outer peripheral surface of the extension portion, so that the third seal 50 contacts the inner peripheral surface of the second sleeve 22 after the extension portion is inserted into the second sleeve 22.

[0136] The second sleeve 22 and the third sleeve 23 can be connected by means of threaded connection, snap-fit, or interference fit. As an example, the second sleeve 22 and the third sleeve 23 are connected by thread. During assembly, the extension of the third sleeve 23 is inserted into the second sleeve 22, and then the second sleeve 22 and the third sleeve 23 are screwed together.

[0137] By setting the third sealing element 50, the sealing performance between the second sleeve 22 and the third sleeve 23 can be improved, thereby further improving the overall sealing reliability of the battery device 2.

[0138] In some embodiments, the second sleeve 22 abuts between the first plate 12 and the first beam 13.

[0139] By abutting the second sleeve 22 between the first plate 12 and the first beam 13, the second sleeve 22 can form a support between the first plate 12 and the first beam 13, and transfer the clamping force acting on the first plate 12 to the first beam 13. When the mounting assembly 20 is connected or subjected to a mounting load, this arrangement helps to improve the stress state near the mounting position of the first plate 12 and reduces the risk of excessive deformation of the first plate 12 toward the first beam 13. At the same time, the second sleeve 22 can limit the distance between the first plate 12 and the first beam 13, facilitating the assembly of the mounting assembly 20.

[0140] In some embodiments, the second sleeve 22 includes a second main body 221, a second flange 222, and a third flange 223. The second flange 222 and the third flange 223 are respectively connected to the two ends of the second main body 221 along the first direction X. The second flange 222 and the third flange 223 both protrude from the outer peripheral surface of the second main body 221. The second flange 222 is connected to the first plate 12, and the third flange 223 is connected to the first beam 13.

[0141] By providing the second flange 222 and the third flange 223, the contact area between the second sleeve 22 and the first plate 12, as well as between the second sleeve 22 and the first beam 13, can be increased. This disperses the force on the second sleeve 22 to a larger area, reducing the risk of local stress concentration. Consequently, this improves the stress state at both ends of the second sleeve 22, reduces the risk of local deformation of the first plate 12 and the first beam 13 near the connection point, and enhances the reliability of the connection between the second sleeve 22 and the first plate 12 and the first beam 13.

[0142] In some embodiments, a third through hole 141 is provided on the second plate 14, the third through hole 141 penetrates the second plate 14 along the first direction X, and in the same plane perpendicular to the first direction X, the orthographic projection of the second through hole 131 and the orthographic projection of the third through hole 141 at least partially overlap. The third sleeve 23 includes a third main body portion 231 and a fourth flange portion 232, the fourth flange portion 232 is connected to the end of the third main body portion 231 away from the second sleeve 22 along the first direction X, the fourth flange portion 232 protrudes from the outer peripheral surface of the third main body portion 231, the third main body portion 231 passes through the second through hole 131 and the third through hole 141, and the fourth flange portion 232 is connected to the side surface of the second plate 14 facing away from the receiving cavity 11.

[0143] In the same plane perpendicular to the first direction X, the orthographic projection of the second through hole 131 and the orthographic projection of the third through hole 141 at least partially overlap, meaning that the second through hole 131 and the third through hole 141 are at least partially opposite each other along the first direction X, so that the third main body 231 can pass through the second through hole 131 and the third through hole 141 in sequence.

[0144] The shapes of the second through hole 131 and the third through hole 141 can be set according to the cross-sectional shape of the third main body 231. As an example, the third main body 231 is cylindrical, and both the second through hole 131 and the third through hole 141 are circular holes. The second through hole 131 and the third through hole 141 can be coaxially arranged, or they can have a certain deviation in the direction perpendicular to the first direction X, as long as the overlapping part of the two can be passed through by the third main body 231.

[0145] The third main body 231 can be a cylindrical structure extending along the first direction X, and its interior can form a channel for fasteners for mounting the battery device 2 to pass through. The third main body 231 passes through the second through hole 131 and the third through hole 141. The end of the third main body 231 near the second sleeve 22 can be connected to the second sleeve 22 through the second through hole 131, and the end of the third main body 231 away from the second sleeve 22 extends to the side of the second plate 14 opposite to the receiving cavity 11.

[0146] The third main body 231 and the second sleeve 22 can be connected by means of threaded connection, snap-fit, or interference fit. As an example, the third main body 231 and the second sleeve 22 are connected by threads. During assembly, the third main body 231 can be passed sequentially through the third through hole 141 and the second through hole 131 from the side of the second plate 14 facing away from the receiving cavity 11, and then the third main body 231 and the second sleeve 22 are aligned and screwed together to complete the connection between the third sleeve 231 and the second sleeve 22. The second through hole 131 and the third through hole 141 can guide and position the third main body 231 during insertion, reducing the risk of tilting or radial displacement of the third main body 231.

[0147] The fourth flange portion 232 may be disposed around the third body portion 231 to form an annular flange structure. The third body portion 231 and the fourth flange portion 232 may be connected by means of integral molding, welding, or interference fit. As an example, the third body portion 231 and the fourth flange portion 232 are integrally molded to reduce the number of parts of the third sleeve 23 and improve the connection stability between the fourth flange portion 232 and the third body portion 231.

[0148] The fourth flange 232 can be connected to the second plate 14 by means of abutment, fastener connection, or welding. As an example, the side surface of the fourth flange 232 facing the second plate 14 abuts against the side surface of the second plate 14 facing away from the receiving cavity 11. After the third sleeve 23 is connected to the second sleeve 22, the fourth flange 232 can restrict the movement of the third sleeve 23 towards the receiving cavity 11 in the first direction X, and cooperate with the second sleeve 22 to connect the first beam 13 and the second plate 14.

[0149] By having the third main body 231 pass sequentially through the second through hole 131 and the third through hole 141, the third main body 231 can be positioned in multiple locations using the second through hole 131 and the third through hole 141. This facilitates the alignment and connection of the third main body 231 with the second sleeve 22, improving the assembly convenience and positional consistency of the third sleeve 23. The fourth flange 232 protrudes from the outer peripheral surface of the third main body 231, increasing the interaction area between the third sleeve 23 and the second plate 14. This disperses the force on the third sleeve 23 to a larger area of ​​the second plate 14, reducing the risk of local deformation near the connection point of the second plate 14 and improving the connection reliability between the third sleeve 23 and the second plate 14.

[0150] In some embodiments, the battery device 2 further includes a fourth seal 60, which is connected between the fourth flange 232 and the second plate 14.

[0151] The fourth seal 60 is used to seal the connection interface between the fourth flange portion 232 and the second plate 14. The fourth seal 60 may be disposed around the third main body portion 231 to form a continuous annular sealing structure on the outer periphery of the third through hole 141.

[0152] The fourth seal 60 and the fourth flange 232 can be connected by means of embedding, bonding, or vulcanization. As an example, the fourth seal 60 can be pre-attached to the side of the fourth flange 232 facing the second plate 14, allowing the fourth seal 60 to be assembled together with the third sleeve 23, thereby reducing the risk of the fourth seal 60 shifting or falling off during assembly. Alternatively, the fourth seal 60 can be first placed on the side of the second plate 14 facing away from the receiving cavity 11, and then pressed tightly against the second plate 14 by the fourth flange 232.

[0153] When the fourth seal 60 is not compressed, at least a portion of the fourth seal 60 can protrude from the side surface of the fourth flange portion 232 facing the second plate 14. After the third main body portion 231 passes through the third through hole 141 and the second through hole 131 in sequence and is connected to the second sleeve 22, the fourth flange portion 232 can press the fourth seal 60 towards the second plate 14, causing the fourth seal 60 to undergo compression deformation along the first direction X, and forming sealing contact with the fourth flange portion 232 and the second plate 14 respectively.

[0154] By connecting the fourth seal 60 between the fourth flange 232 and the second plate 14, the elastic deformation of the fourth seal 60 can fill the gap between the fourth flange 232 and the second plate 14, and seal the outer periphery of the third through hole 141, reducing the risk of external media entering the receiving cavity 11 from the side of the second plate 14 away from the receiving cavity 11 through the third through hole 141. Simultaneously, the fourth flange 232 provides a larger compression and support area for the fourth seal 60, which helps improve the stress state and compression uniformity of the fourth seal 60, and enhances the sealing reliability between the third sleeve 23 and the second plate 14.

[0155] In some embodiments, the housing 10 further includes a third plate 15, which is connected to the side of the fourth flange 232 facing away from the second plate 14.

[0156] The third plate 15 can be disposed opposite to the second plate 14 along the first direction X, and the fourth flange 232 is located between the third plate 15 and the second plate 14, so that the third plate 15 can cover the fourth flange 232.

[0157] The third plate 15 and the fourth flange 232 can be connected by means of fasteners, welding, riveting, or snap-fitting. For example, the third plate 15 can be fastened to the fourth flange 232 to facilitate the installation and removal of the third plate 15. The third plate 15 can also be connected to the second plate 14 or other structures of the housing 10 to maintain stability relative to the second plate 14.

[0158] By connecting the third plate 15 to the side of the fourth flange 232 facing away from the second plate 14, the third plate 15 can shield the fourth flange 232 and its connection point with the second plate 14, reducing the risk of direct impact from external foreign objects onto the fourth flange 232. Simultaneously, the third plate 15 provides an additional connection point for the fourth flange 232, which helps limit movement of the fourth flange 232 relative to the second plate 14 and improves the connection stability of the mounting assembly 20.

[0159] In some embodiments, the third plate 15 may be a bottom protective plate.

[0160] In some embodiments, the battery device 2 further includes a fifth seal 70, which is connected between the fourth flange portion 232 and the third plate 15.

[0161] The fifth seal 70 is used to seal the connection interface between the fourth flange portion 232 and the third plate 15. The fifth seal 70 may be disposed around the third body portion 231 to form a continuous annular sealing structure on the outer periphery of the third body portion 231.

[0162] The fifth seal 70 can be an annular seal with elastic deformation capability. In the free state, at least a portion of the fifth seal 70 can protrude from the surface of the fourth flange 232 facing the third plate 15. When the third plate 15 is connected to the fourth flange 232, the third plate 15 can press against the fifth seal 70, causing the fifth seal 70 to undergo compressive deformation along the first direction X, and forming a sealing contact with the fourth flange 232 and the third plate 15 respectively.

[0163] By connecting the fifth seal 70 between the fourth flange 232 and the third plate 15, the elastic deformation of the fifth seal 70 can fill the assembly gap between the two, reducing the risk of external media such as water vapor and salt spray seeping in along the connection interface between the fourth flange 232 and the third plate 15.

[0164] In some embodiments, a fourth through hole 151 is provided on the third plate 15, and the fourth through hole 151 penetrates the third plate 15 along the first direction X. The battery device 2 also includes a fourth sleeve 24, which is connected to the third main body 231 through the fourth through hole 151, and the fourth sleeve 24 is connected to the side of the third plate 15 facing away from the fourth flange 232.

[0165] The fourth sleeve 24 can be a cylindrical structure extending along the first direction X, and the interior of the fourth sleeve 24 can form a channel for fasteners for mounting the battery device 2 to pass through. After the fourth sleeve 24 is connected to the third main body 231, the internal channel of the fourth sleeve 24 can communicate with the internal channel of the third main body 231 to form a continuous channel extending along the first direction X.

[0166] The fourth sleeve 24 and the third main body 231 can be connected by means of threaded connection, snap-fit, or interference fit. As an example, the fourth sleeve 24 and the third main body 231 are connected by threads, one of the fourth sleeve 24 and the third main body 231 is provided with external threads, and the other is provided with internal threads that mate with the external threads.

[0167] The fourth sleeve 24 is connected to the side of the third plate 15 facing away from the fourth flange 232. The fourth sleeve 24 and the third plate 15 can be connected indirectly by abutment or other connection structure. As an example, the end of the fourth sleeve 24 facing the third plate 15 abuts against the surface of the third plate 15 facing away from the fourth flange 232. As the fourth sleeve 24 and the third main body 231 are gradually tightened, the fourth sleeve 24 and the fourth flange 232 can clamp the third plate 15 from both sides along the first direction X, thereby connecting the third plate 15 to the third sleeve 23.

[0168] The fourth sleeve 24 and the fourth flange 232 can clamp the third plate 15 from both sides, which helps to improve the connection stability between the third plate 15 and the mounting assembly 20.

[0169] In some embodiments, when a fifth seal 70 is provided, the fifth seal 70 is located between the fourth flange portion 232 and the third plate 15. When the fourth sleeve 24 is connected to the third main body portion 231 and clamps the third plate 15, the third plate 15 can press against the fifth seal 70, compressing the fifth seal 70 between the third plate 15 and the fourth flange portion 232. Thus, the connection process between the fourth sleeve 24 and the third main body portion 231 can be completed simultaneously with the installation of the third plate 15 and the clamping of the fifth seal 70, which simplifies the assembly process.

[0170] In some embodiments, at least one of the first seal 30, the second seal 40, the third seal 50, the fourth seal 60, and the fifth seal 70 may be a double-ribbed sealing ring.

[0171] For example, the double-ribbed sealing ring may be annular and include two sealing ribs extending circumferentially thereon. The two sealing ribs may be radially spaced along the double-ribbed sealing ring and both protrude toward the surface to be sealed that mates with the seal, thereby forming two spaced-apart sealing contact areas when the seal is compressed.

[0172] By setting the seal as a double-ribbed sealing ring, two sealing ribs can form two spaced-apart sealing contact areas. When the external medium passes through one of the sealing contact areas, the other sealing contact area can further block the external medium, thereby lengthening the path of the external medium to penetrate through the connection interface and improving the sealing reliability of the corresponding connection position.

[0173] In some embodiments, the first seal 30, the second seal 40, the third seal 50, the fourth seal 60, and the fifth seal 70 may all be made of a rubber material with elastic deformation capability, such as at least one of silicone rubber, EPDM rubber, nitrile rubber, fluororubber, chloroprene rubber, or natural rubber.

[0174] In some embodiments, the battery device 2 further includes a battery cell 80, which is housed within the receiving cavity 11.

[0175] In some embodiments, the battery cell 80 is supported on the second plate 14.

[0176] According to some embodiments of this application, this application also provides an electrical device, including a battery device 2 of any of the above schemes, the battery device 2 being used to store or provide electrical energy.

[0177] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. All technical features and optional technical features of this application can be combined to form new technical solutions.

[0178] To better understand the battery device 2 provided in the embodiments of this application, based on the same inventive concept, an embodiment of the battery device 2 in practical application is provided here for description.

[0179] This application provides a battery device 2, which includes a housing 10, a mounting assembly 20, a first seal 30, a second seal 40, a third seal 50, a fourth seal 60, and a fifth seal 70. The housing 10 has a receiving cavity 11 and includes a first plate 12, a first beam 13, a second plate 14, and a third plate 15. The receiving cavity 11 is located on one side of the first plate 12 along a first direction X. The second plate 14 is disposed opposite to the first plate 12 along the first direction X. The first beam 13 is connected to the side of the second plate 14 facing the receiving cavity 11. The second plate 14 is a heat exchange plate, and the third plate 15 is a bottom protective plate.

[0180] A first through hole 121 is formed on the first plate 12, extending through the first plate 12 along the first direction X. The mounting assembly 20 passes through the first through hole 121 and is connected to the first plate 12. A first seal 30 is connected between the mounting assembly 20 and the first plate 12, and a second seal 40 is connected between the mounting assembly 20 and the first plate 12. Along the path from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12 into the receiving cavity 11, the first seal 30 is located upstream of the second seal 40. In the same plane perpendicular to the first direction X, the orthographic projections of the first seal 30 and the second seal 40 are spaced apart.

[0181] The mounting assembly 20 includes a first sleeve 21, a second sleeve 22, a third sleeve 23, and a fourth sleeve 24. The first sleeve 21 and the second sleeve 22 are interconnected via a first through hole 121. At least a portion of the first sleeve 21 is connected to the side surface of the first plate 12 facing away from the receiving cavity 11, and the second sleeve 22 is connected to the side surface of the first plate 12 facing the receiving cavity 11. A first seal 30 is connected between the first sleeve 21 and the first plate 12, and a second seal 40 is connected between the second sleeve 22 and the first plate 12.

[0182] The first sleeve 21 includes a first main body portion 211 and a first flange portion 212 connected together. The first main body portion 211 passes through a first through hole 121 and is connected to the second sleeve 22. The first flange portion 212 protrudes from the outer peripheral surface of the first main body portion 211 and is connected to the side surface of the first plate 12 facing away from the receiving cavity 11. A first sealing member 30 is connected to the outer peripheral surface of the first flange portion 212. The first sleeve 21 also includes a protrusion 213, which is connected to the first flange portion 212 and protrudes from the outer peripheral surface of the first flange portion 212. The first sealing member 30 has a first recess 31 on the side facing the first flange portion 212, and at least a portion of the protrusion 213 is accommodated in the first recess 31. In the first direction X, the first sealing member 30 protrudes from the side surface of the first flange portion 212 facing the first plate 12.

[0183] The second sleeve 22 includes a second main body 221, a second flange 222, and a third flange 223. The second flange 222 and the third flange 223 are respectively connected to the two ends of the second main body 221 along the first direction X. Both the second flange 222 and the third flange 223 protrude from the outer peripheral surface of the second main body 221. The second flange 222 is connected to the first plate 12, and the third flange 223 is connected to the first beam 13, so that the second sleeve 22 abuts against the first plate 12 and the first beam 13. The second sleeve 22 has a second recess 220 on the side facing the first plate 12, and at least a portion of the second sealing member 40 is disposed in the second recess 220. The second sealing member 40 is connected between the second flange 222 and the first plate 12.

[0184] A second through hole 131 is provided on the first beam 13, and the second through hole 131 penetrates the first beam 13 along the first direction X. The second sleeve 22 and the third sleeve 23 are connected to each other through the second through hole 131. The end of the second sleeve 22 away from the third sleeve 23 along the first direction X is connected to the first plate 12, and the end of the third sleeve 23 away from the second sleeve 22 along the first direction X is connected to the second plate 14. The third sealing element 50 is connected between the third sleeve 23 and the second sleeve 22.

[0185] The second plate 14 has a third through hole 141 that penetrates the second plate 14 along the first direction X. In the same plane perpendicular to the first direction X, the orthographic projection of the second through hole 131 and the orthographic projection of the third through hole 141 at least partially overlap. The third sleeve 23 includes a third main body 231 and a fourth flange 232. The fourth flange 232 is connected to the end of the third main body 231 away from the second sleeve 22 along the first direction X. The fourth flange 232 protrudes from the outer peripheral surface of the third main body 231. The third main body 231 passes through the second through hole 131 and the third through hole 141. The fourth flange 232 is connected to the side surface of the second plate 14 facing away from the receiving cavity 11.

[0186] A fourth sealing element 60 is connected between the fourth flange portion 232 and the second plate 14. A third plate 15 is connected to the side of the fourth flange portion 232 facing away from the second plate 14, and a fifth sealing element 70 is connected between the fourth flange portion 232 and the third plate 15. A fourth through hole 151 is provided on the third plate 15, and the fourth through hole 151 penetrates the third plate 15 along the first direction X. A fourth sleeve 24 is connected to the third main body portion 231 through the fourth through hole 151, and the fourth sleeve 24 is connected to the side of the third plate 15 facing away from the fourth flange portion 232.

[0187] By sequentially installing a first seal 30 and a second seal 40 along the path from the outside of the housing 10 through the gap between the mounting assembly 20 and the first plate 12 into the receiving cavity 11, the first seal 30 can first block external media such as water vapor and salt spray, reducing the amount of external media reaching the second seal 40. This can reduce the direct and continuous erosion of the second seal 40 by external media, improve the service life of the second seal 40, and reduce the risk of external media entering the receiving cavity 11 after the failure of a single sealing position, thereby effectively improving the sealing reliability of the battery device 2.

[0188] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0189] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box has a receiving cavity. The box includes a first plate. The receiving cavity is located on one side of the first plate along a first direction. A first through hole is formed on the first plate and penetrates the first plate along the first direction. The mounting component passes through the first through hole and is connected to the first plate. The first seal and the second seal are located upstream of the second seal along the path from the outside of the housing through the gap between the mounting assembly and the first plate, along the external medium. The mounting assembly includes a first sleeve and a second sleeve, the first sleeve and the second sleeve are connected to each other through the first through hole, at least a portion of the first sleeve is connected to the side surface of the first plate facing away from the receiving cavity, and the second sleeve is connected to the side surface of the first plate facing the receiving cavity. The first sleeve includes a first main body and a first flange connected together. The first main body passes through the first through hole and is connected to the second sleeve. The first flange protrudes from the outer peripheral surface of the first main body and is connected to the side surface of the first plate facing away from the receiving cavity. The first sealing member is connected to the outer peripheral surface of the first flange and seals the connection interface between the first flange and the first plate. The second sealing member is connected between the second sleeve and the first plate.

2. The battery device according to claim 1, characterized in that, The first sleeve further includes a protrusion, which is connected to the first flange and protrudes from the outer peripheral surface of the first flange. The first seal has a first recess on the side facing the first flange, and at least a portion of the protrusion is accommodated within the first recess.

3. The battery device according to claim 1, characterized in that, In the first direction, the first seal protrudes from the side surface of the first flange facing the first plate.

4. The battery device according to claim 1, characterized in that, In the same plane perpendicular to the first direction, the orthographic projections of the first seal and the second seal are spaced apart.

5. The battery device according to claim 1, characterized in that, The second sleeve has a second recess on the side facing the first plate, and at least a portion of the second seal is disposed in the second recess.

6. The battery device according to claim 1, characterized in that, The second sleeve includes a second main body and a second flange. The second flange is connected to one end of the second main body along the first direction. The second flange protrudes from the outer peripheral surface of the second main body. The second flange is connected to the side surface of the first plate facing the receiving cavity. The second seal is connected between the second flange and the first plate.

7. The battery device according to any one of claims 1-6, characterized in that, The housing also includes a first beam and a second plate, the second plate and the first plate being disposed opposite to each other along the first direction, the first beam being connected to the side of the second plate facing the receiving cavity, and the mounting assembly connecting the first beam, the first plate and the second plate.

8. The battery device according to claim 7, characterized in that, The mounting assembly includes a second sleeve and a third sleeve. A second through hole is provided on the first beam. The second through hole penetrates the first beam along the first direction. The second sleeve and the third sleeve are connected to each other through the second through hole. The end of the second sleeve away from the third sleeve along the first direction is connected to the first plate, and the end of the third sleeve away from the second sleeve along the first direction is connected to the second plate.

9. The battery device according to claim 8, characterized in that, The battery device further includes a third seal, which is connected between the third sleeve and the second sleeve.

10. The battery device according to claim 8, characterized in that, The second sleeve abuts between the first plate and the first beam.

11. The battery device according to claim 10, characterized in that, The second sleeve includes a second main body, a second flange, and a third flange. The second flange and the third flange are respectively connected to the two ends of the second main body along the first direction. Both the second flange and the third flange protrude from the outer peripheral surface of the second main body. The second flange is connected to the first plate, and the third flange is connected to the first beam.

12. The battery device according to claim 8, characterized in that, The second plate has a third through hole, which penetrates the second plate along the first direction. In the same plane perpendicular to the first direction, the orthographic projection of the second through hole and the orthographic projection of the third through hole at least partially overlap. The third sleeve includes a third main body and a fourth flange. The fourth flange is connected to one end of the third main body away from the second sleeve along the first direction. The fourth flange protrudes from the outer peripheral surface of the third main body. The third main body passes through the second through hole and the third through hole. The fourth flange is connected to the side surface of the second plate facing away from the receiving cavity.

13. The battery device according to claim 12, characterized in that, The battery device further includes a fourth seal, which is connected between the fourth flange and the second plate.

14. The battery device according to claim 12, characterized in that, The housing also includes a third plate, which is connected to the side of the fourth flange facing away from the second plate.

15. The battery device according to claim 14, characterized in that, The battery device further includes a fifth seal, which is connected between the fourth flange and the third plate.

16. The battery device according to claim 14, characterized in that, The third plate is provided with a fourth through hole, which penetrates the third plate along the first direction; The battery device further includes a fourth sleeve, which is connected to the third main body through the fourth through hole. The fourth sleeve is connected to the side of the third plate facing away from the fourth flange.

17. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-16, the battery device being used to store or provide electrical energy.

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