Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment. The battery device comprises a battery main body which is provided with a mounting part, and the mounting part is provided with a mounting through hole penetrating through the top surface and the bottom surface of the mounting part; the mounting sleeve comprises a mounting cylinder part and a mounting flange, the mounting flange is arranged at one end of the mounting cylinder part in an outward protruding mode in the radial direction of the mounting sleeve, the mounting cylinder part extends into the mounting through hole, and the mounting flange is in lap joint with the top face of the mounting part; the connecting piece can penetrate through the cylinder part and is connected with the battery mounting rack; the two buffering pieces are oppositely arranged in the axial direction of the mounting through hole, and in the first direction parallel to the axial direction of the mounting through hole, one part of one buffering piece is arranged between the mounting flange and the top face of the mounting part; and the other buffer part is partially arranged between the bottom surface of the hanging part and the battery mounting rack. Therefore, the acting force between the hanging sleeve and the top surface of the hanging part and the acting force between the hanging part and the battery mounting rack can be buffered through the buffer piece, so that the risk of cracking failure of the hanging part is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery testing, and in particular to a battery device and an electric device. BACKGROUND

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] At present, the battery device is connected with the external battery mounting rack by mounting. If the material of the mounting part is hard metal, the mounting part is connected with the connecting sleeve by welding, and then the external structure is connected with the connecting sleeve by bolts. However, if the material of the mounting part is non-metal, the mounting part is prone to cracking failure under load. CONTENT OF THE UTILITY MODEL

[0004] In view of the problem, the present application provides a battery device and an electric device, which can alleviate the problem that the mounting part is prone to cracking failure under load.

[0005] In a first aspect, the present application provides a battery device for connecting with a battery mounting rack, the battery device comprising:

[0006] a battery body having a mounting part, the mounting part having a mounting through hole penetrating through the top surface and the bottom surface thereof;

[0007] a mounting sleeve comprising a mounting cylinder part and a mounting flange, the mounting flange being outwardly protruded from one end of the mounting cylinder part along the radial direction of the mounting sleeve, the mounting cylinder part extending into the mounting through hole, and the mounting flange being overlapped with the top surface of the mounting part;

[0008] a connecting piece capable of being arranged through the cylinder part to connect with the battery mounting rack;

[0009] and two buffer pieces, the two buffer pieces being oppositely arranged along the axial direction of the mounting through hole, and one of the buffer pieces being partially arranged between the mounting flange and the top surface of the mounting part, and the other of the buffer pieces being partially arranged between the bottom surface of the mounting part and the battery mounting rack.

[0010] When the above-mentioned battery device is connected with the battery mounting rack, the mounting part bears the load. Since one of the buffer pieces is partially arranged between the mounting flange and the top surface of the mounting part, the buffer piece can buffer the force between the mounting sleeve and the top surface of the mounting part. Since the other of the buffer pieces is partially arranged between the bottom surface of the mounting part and the battery mounting rack, the buffer piece can buffer the force between the mounting part and the battery mounting rack. Therefore, the risk of cracking failure of the mounting part is reduced, and the reliability of the mounting part is improved.

[0011] In some embodiments, another part of at least one of the buffer pieces extends into the mounting through hole and is located between the mounting cylinder part and the inner wall of the mounting through hole.

[0012] When the other part of the buffer member extends into the mounting through hole, a buffer layer can be formed between the outer periphery of the mounting sleeve portion and the inner wall of the mounting through hole, which not only buffers the force between the mounting sleeve and the mounting portion in the radial direction, but also makes the part of the connecting member passing between the mounting sleeve portion and the inner wall of the mounting sleeve portion close to the inner wall of the mounting sleeve portion when the mounting size of the mounting portion is close to the limit, so that the connecting member can be in contact with the inner wall of the mounting sleeve portion in the long-term use, and the inner wall of the mounting hole outside the mounting sleeve portion bears pressure, increasing the risk of cracking of the mounting portion. Therefore, after the other part of the buffer member is arranged between the mounting sleeve portion and the inner wall of the mounting through hole, the pressure indirectly applied to the mounting portion from the connecting member can be relieved, and the risk of cracking and damage of the mounting portion is further reduced.

[0013] In some embodiments, the at least one buffer member includes a buffer sleeve portion and a buffer flange, and the buffer flange is protruded outward along the radial direction of the buffer sleeve portion at one end of the buffer sleeve portion.

[0014] The part of the buffer member between the mounting flange and the top surface of the mounting portion is the buffer flange, or the part of the buffer member between the bottom surface of the mounting portion and the battery mounting rack is the buffer flange.

[0015] The part of the buffer member extending into the mounting through hole and located between the mounting sleeve portion and the inner wall of the mounting through hole is the buffer sleeve portion, and the buffer sleeve portion is arranged around the mounting sleeve portion.

[0016] By arranging the buffer member to include the buffer sleeve portion and the buffer flange, the buffer member can adapt to the structure and shape of the mounting sleeve, and the reliability of the buffer member in buffering the force between the mounting sleeve and the mounting portion and between the mounting portion and the battery mounting rack is higher.

[0017] In some embodiments, the buffer sleeve portion is in interference fit with the mounting through hole.

[0018] And / or the mounting sleeve portion is in interference fit with the buffer sleeve portion.

[0019] By arranging the buffer sleeve portion in interference fit with the mounting through hole, the buffer sleeve portion and the mounting through hole can be tightly connected, the positioning of the buffer sleeve portion relative to the mounting portion is reliable, and the buffering effect is better.

[0020] By arranging the mounting sleeve portion in interference fit with the buffer sleeve portion, the mounting sleeve portion and the buffer sleeve portion can be tightly connected, the positioning of the mounting sleeve portion relative to the buffer sleeve portion is reliable, and the buffering effect is better.

[0021] In some embodiments, in a second direction perpendicular to the axial direction of the mounting through hole, the outer edge of the buffer flange arranged between the mounting flange and the top surface of the mounting portion is more protruded than the outer edge of the mounting flange.

[0022] When the outer edge of the buffer flange between the mounting flange and the top surface of the mounting portion is more protruding than the outer edge of the mounting flange, the buffer flange has a larger supporting area for the mounting flange, thereby improving the buffering effect and reliability in the axial direction between the mounting portion and the mounting sleeve.

[0023] In some embodiments, the mounting cylinder portion has a first end surface at one end thereof facing the battery mounting rack;

[0024] The buffer member between the bottom surface of the mounting portion and the battery mounting rack has a second end surface at one end thereof facing the battery mounting rack;

[0025] In some embodiments, the battery device has a mounting state and a non-mounting state, and the buffer member has elasticity. When in the mounting state, the buffer member is compressed, and the first end surface and the second end surface are both in abutment with the battery mounting rack. When in the non-mounting state, the buffer member is not compressed, and the first end surface is arranged farther away from the battery mounting rack than the second end surface.

[0026] Since in the mounting state, the buffer member is compressed, and the first end surface and the second end surface are both in abutment with the battery mounting rack, the mounting sleeve forms a rigid connection between the first end surface and the battery mounting rack, and the opposite end of the mounting sleeve can also form a rigid connection with the connecting member, thereby reducing the risk of soft connection lockout and improving the reliability of the connection between the mounting portion and the battery mounting rack through the connecting member and the mounting sleeve. In the non-mounting state, the buffer member is not compressed, and the first end surface is arranged farther away from the battery mounting rack than the second end surface, satisfying the compression stroke of the buffer member from the non-mounting state to the mounting state, and improving the buffering reliability of the buffer member after compression.

[0027] In some embodiments, the battery body includes a box body having the mounting portion, and the box body is an injection-molded box body.

[0028] When the box body is an injection-molded box body, it is more conducive to weight reduction and cost reduction compared to a metal box body. In addition, when the box body is an injection-molded box body, the rigidity of the mounting portion is reduced, and therefore, by arranging the buffer member between the mounting flange and the top surface of the mounting portion, and arranging another buffer member between the bottom surface of the mounting portion and the battery mounting rack, the acting force between the mounting portion and the battery mounting rack, and between the mounting portion and the connecting member can be buffered, thereby reducing the risk of cracking of the mounting portion and improving the reliability of the mounting portion.

[0029] In some embodiments, the battery body includes a box body having a receiving cavity, and the box body further has a first side wall, the mounting portion is arranged on a side of the first side wall away from the receiving cavity, and the first side wall has a buffer structure on a side thereof facing the receiving cavity.

[0030] The buffer structure is arranged on the inner side of the first side wall with the mounting part, which not only strengthens the structural reliability of the first side wall, but also buffers the external force acting on the first side wall in time, reducing damage to the mounting part, the first side wall and components in the accommodating cavity.

[0031] In some embodiments, the buffer structure includes a plurality of buffer cavities, and all the buffer cavities are arranged along the length direction of the first side wall.

[0032] The buffer cavities have a certain energy absorption effect, which can absorb and disperse external impact or load to some extent, thereby protecting the mounting part, the first side wall and components in the accommodating cavity.

[0033] In some embodiments, the mounting part of the first side wall includes a plurality of mounting parts, all the mounting parts are arranged at intervals along the length direction of the first side wall, the orthographic projection of all the buffer structures toward the first side wall forms a first projection area, the orthographic projection of all the mounting parts toward the first side wall forms a second projection area, and the first projection area covers the second projection area.

[0034] When the first projection area covers the second projection area, all the mounting parts can be affected by the buffer cavities, so that the buffer cavities can reliably absorb and disperse external impact or load on the mounting part, reducing the risk of damage to the mounting part under external force.

[0035] In a second aspect, a power device is provided, which includes the battery device of any of the above embodiments.

[0036] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, the following detailed description can be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the following detailed description of the specific embodiments of the present application is given. BRIEF DESCRIPTION OF DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same or similar elements. In the drawings:

[0038] Figure 1 A structural schematic diagram of a vehicle according to one or more embodiments.

[0039] Figure 2 A structural schematic diagram of a battery according to one or more embodiments.

[0040] Figure 3 A structural schematic diagram of a battery cell according to one or more embodiments.

[0041] Figure 4 A structural schematic diagram of a partial structure of a box according to one or more embodiments.

[0042] Figure 5 A structural schematic diagram of a partial structure of a box according to one or more embodiments. Figure 4 An exploded structural schematic diagram of a partial structure of a box according to one or more embodiments.

[0043] Figure 6 A partial enlarged schematic diagram of a partial structure of a box according to one or more embodiments. Figure 5 A partial enlarged schematic diagram of a partial structure of a box according to one or more embodiments.

[0044] Figure 7 A cross-sectional structural schematic diagram of a partial structure of a box according to one or more embodiments. Figure 4 A cross-sectional structural schematic diagram of a partial structure of a box according to one or more embodiments.

[0045] Figure 8 A cross-sectional structural schematic diagram of a partial structure of a box according to one or more embodiments. Figure 4 A cross-sectional structural schematic diagram of a partial structure of a box according to one or more embodiments.

[0046] Reference signs in the detailed description of the embodiments are as follows:

[0047] 1000, vehicle; 100, battery device; 10, box; 11, first part; 12, second part; 13, containing cavity; 14, first side wall; 15, buffer structure; 151, buffer cavity; 152, buffer wall; 16, bottom wall; 20, battery monomer; 21, end cover; 211, electrode terminal; 22, shell; 23, electrode assembly; 231, tab; 30, battery main body; 31, mounting part; 311, top surface; 312, bottom surface; 313, mounting through hole; 40, mounting sleeve; 41, mounting cylinder part; 411, first end surface; 42, mounting flange; 50, connecting piece; 60, buffer piece; 61, first buffer piece; 611, buffer cylinder part; 612, buffer flange; 613, second end surface; 62, second buffer piece; 200, controller; 300, motor; 400, battery mounting rack. DETAILED DESCRIPTION

[0048] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of the present application, the technical terms "first", "second", and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0051] In this paper, the term "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, 1 and / or 2, which can mean: 1 exists alone, 1 and 2 exist together, and 2 exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0053] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0054] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0055] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] After the battery device is installed on the electrical equipment, for example, in the case of an electric vehicle, the movement of the electric vehicle can cause the battery device to shake. If the shaking of the battery device is too large, it will adversely affect the performance of the battery device. In order to fix the battery, one way is to fix the battery device by cooperating the lock shaft provided on the box body of the battery device with the lock structure provided on the frame of the electric vehicle. Alternatively, the battery device can be mounted on the frame through the mounting point provided on the battery device.

[0057] Generally, the mounting part of the battery device is made of metal. The metal sleeve is welded with the metal mounting part, and then the metal sleeve is connected with the external battery mounting rack through a connecting member such as a bolt. In the related art, in order to reduce the weight and cost of the battery device, the box body of the battery device with the mounting part is changed to a non-metal box body. When the metal sleeve is mounted on the non-metal mounting part and connected with the external battery mounting rack through the connecting member, since the mounting part is the bearing stress point, the non-metal mounting part is prone to cracking failure under the action force of the metal sleeve.

[0058] In order to alleviate the problem that the non-metal mounting part is prone to cracking failure, the application designs a battery device for connecting with a battery mounting rack. The battery device comprises a battery main body, a mounting sleeve, a connecting member and two buffer members. The battery main body has a mounting part, the mounting part has a mounting through hole penetrating through the top surface and the bottom surface thereof, the mounting sleeve comprises a mounting cylinder part and a mounting flange, the mounting flange is outwardly protruded from one end of the mounting cylinder part along the radial direction of the mounting sleeve, the mounting cylinder part extends into the mounting through hole, and the mounting flange is overlapped with the top surface of the mounting part. The connecting member can be penetrated through the cylinder part to connect with the battery mounting rack. The two buffer members are oppositely arranged along the axial direction of the mounting through hole, and are arranged along a first direction parallel to the axial direction of the mounting through hole. Part of one buffer member is arranged between the mounting flange and the top surface of the mounting part, and part of the other buffer member is arranged between the bottom surface of the mounting part and the battery mounting rack.

[0059] In this way, when the battery device of the application is connected to the battery mounting rack, the mounting part bears the stress. Since part of one buffer member is arranged between the mounting flange and the top surface of the mounting part, the action force between the mounting sleeve and the top surface of the mounting part can be buffered. Since part of the other buffer member is arranged between the bottom surface of the mounting part and the battery mounting rack, the action force between the mounting part and the battery mounting rack can be buffered. Therefore, the risk of cracking failure of the mounting part is reduced, and the reliability of the mounting part is improved.

[0060] The battery device disclosed in the application can be used in electrical equipment such as vehicles, ships or aircraft, but is not limited thereto.

[0061] The embodiments of the present application provide a power consumption device using a battery device as a power supply. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0062] The following embodiments are described by taking a power consumption device in an embodiment of the present application as an example for convenience of description.

[0063] Please refer to Figure 4 , Figure 1 The structure diagram of a vehicle 1000 provided by some embodiments of the present application is shown. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery device 100. The battery device 100 can be arranged at the bottom, the head or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000. For example, the battery device 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0064] In some embodiments of the present application, the battery device 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Please refer to Figure 1 , Figure 2This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a space for accommodating the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, jointly defining a space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one open end, and the first portion 11 may be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 jointly define the space; alternatively, the first portion 11 and the second portion 12 may both be hollow structures with one open side, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0066] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form battery device modules, and then these modules are connected in series, parallel, or in a mixed manner to form a whole, which is then housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0067] Each battery cell 20 can be a secondary battery device or a primary battery device; it can also be a lithium-sulfur battery device, a sodium-ion battery device, or a magnesium-ion battery device, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0068] Please refer to Figure 2 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0069] End cap 21 refers to a component that covers the opening 221 of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, giving battery cell 20 higher structural strength and improved safety performance. Functional components such as electrode terminals 211 can be provided on end cap 21. Electrode terminals 211 can be used for electrical connection with electrode assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0070] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0071] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more electrode assemblies 23. Electrode assembly 23 mainly consists of positive and negative electrode materials, a separator, and a current collector. Specifically, positive electrode material is coated onto the output electrode connector of the battery device to form a positive electrode sheet, and negative electrode material is coated onto the output electrode connector of the battery device to form a negative electrode sheet. The positive and negative electrode sheets are wound or stacked, and a separator is disposed between the positive and negative electrode sheets, thus forming electrode assembly 23. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute tabs 231. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device, the positive and negative active materials react with the electrolyte, and the tabs 231 connect to the electrode terminals 211 to form a current loop.

[0072] Figure 3 This is a structural schematic diagram of a portion of the housing according to one or more embodiments. Figure 4 for Figure 5 The diagram shows an exploded view of part of the box structure. Figure 4 for Figure 6 A magnified view of part A in the partial structure of the box shown. Figure 5 for Figure 7 The diagram shows a cross-sectional view of part of the box structure. Figure 4 for Figure 8 The diagram shows a cross-sectional view of the structure after the housing and battery mounting bracket are connected. (See attached diagram.) Figure 4 This application provides a battery device 100, including a battery body 30, a mounting sleeve 40, a connector 50, and two buffer members 60. The battery body 30 has a mounting portion 31 with a mounting through hole 313 penetrating its top surface 311 and bottom surface 312. The mounting sleeve 40 includes a mounting cylindrical portion 41 and a mounting flange 42. The mounting flange 42 protrudes radially outward from one end of the mounting cylindrical portion 41, the mounting cylindrical portion 41 extends into the mounting through hole 313, and the mounting flange 42 overlaps the top surface 311 of the mounting portion 31. The connector 50 can pass through the cylindrical portion and connect to a battery mounting bracket 400. Two buffer members 60 are arranged opposite each other along the axial direction of the mounting through hole 313. In a first direction parallel to the axial direction of the mounting through hole 313, a portion of one buffer member 60 is located between the mounting flange 42 and the top surface 311 of the mounting part 31, while a portion of the other buffer member 60 is located between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400.

[0073] The battery body 30 is the main part of the battery device 100, specifically the aforementioned housing 10 and battery cell 20. The mounting portion 31 connects the battery body 30 to the battery mounting bracket 400, securing the battery device 100 and transferring load. The top surface 311 and bottom surface 312 of the mounting portion 31 refer to the upper and lower vertical surfaces of the battery device 100 after it is connected to the battery mounting bracket 400. The mounting through hole 313 allows the connector 50 to pass through, connecting the battery body 30 to the battery mounting bracket 400.

[0074] The mounting sleeve 40 is used for connecting, fixing, and bearing loads. The mounting sleeve 40 typically has a certain degree of rigidity and can be made of metal. The mounting cylinder portion 41 refers to the main structure of the mounting sleeve 40, which is a hollow shaft-like structure inserted into the mounting through hole 313, providing primary support. The mounting cylinder portion 41 has a through hole extending axially along and through the mounting sleeve 40, allowing bolts and other connecting parts 50 to pass through during use. The mounting flange 42 is a protruding structure located in the mounting cylinder portion 41. During use, the mounting flange 42 abuts against the outer surface of the mounting through hole 313, i.e., the top surface 311 of the mounting portion 31, to axially position the mounting cylinder portion 41. Additionally, the mounting flange 42 increases the contact area with the connecting parts 50, improving the stability of the connection. The mounting flange 42 surrounds the mounting cylinder portion 41. The mounting flange 42 is arranged in a ring shape to surround the mounting cylinder 41, which allows for more even force distribution on the outer periphery of the mounting cylinder 41 during positioning and support. This structure also facilitates manufacturing and positioning of the connecting piece 50. The mounting flange 42 can be integrally formed with the mounting cylinder 41, or it can be manufactured separately and then fixedly connected to the mounting cylinder 41.

[0075] A connector 50 refers to a component that connects at least two separate parts. In embodiments of this application, the connector 50 may be a bolt, a shaft, or the like.

[0076] The buffer 60 is a component capable of buffering external forces. The buffer 60 can be made of elastic or flexible materials to possess either elasticity or flexibility. When an external force is received between the mounting part 31 and the mounting sleeve 40, the buffer 60 can withstand some of the external force to reduce the transmission of external force between the two. The two buffers 60 are two independent components and can be individually detached and installed onto the mounting part 31.

[0077] The first direction is Figures 4-8 The vertical direction is shown.

[0078] Thus, when the battery device 100 of this embodiment is connected to the battery mounting bracket 400, the mounting part 31 bears the force. Since a portion of one of the buffer members 60 is located between the mounting flange 42 and the top surface 311 of the mounting part 31, it can buffer the force between the mounting sleeve 40 and the top surface 311 of the mounting part 31. A portion of the other buffer member 60 is located between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400, thus buffering the force between the mounting part 31 and the battery mounting bracket 400. Therefore, the risk of cracking and failure of the mounting part 31 is reduced, and the reliability of the mounting part 31 is improved.

[0079] To facilitate the distinction between the two buffers 60, one of the buffers 60 is named the first buffer 61, with a portion of the first buffer 61 located between the mounting flange 42 and the top surface 311 of the mounting portion 31. The other buffer 60 is named the second buffer 62, with a portion of the second buffer 62 located between the bottom surface 312 of the mounting portion 31 and the battery mounting bracket 400.

[0080] According to some embodiments of this application, at least one buffer 60 has another portion extending into the mounting through hole 313 and located between the mounting cylinder portion 41 and the inner wall of the mounting through hole 313.

[0081] Alternatively, another part of the first buffer 61 may extend into the mounting through hole 313 and be located between the mounting cylinder 41 and the inner wall of the mounting through hole 313. Or, another part of the second buffer 62 may extend into the mounting through hole 313 and be located between the mounting cylinder 41 and the inner wall of the mounting through hole 313. Or, another part of both the first buffer 61 and the second buffer 62 may extend into the mounting through hole 313 and be located between the mounting cylinder 41 and the inner wall of the mounting through hole 313.

[0082] When the other part of the buffer 60 extends into the mounting through hole 313, a buffer layer can be formed between the outer periphery of the mounting cylinder 41 and the inner wall of the mounting through hole 313. This not only buffers the force between the mounting sleeve 40 and the mounting part 31 in the radial direction, but also, when the installation size of the mounting part 31 is at its limit, the part of the connector 50 that passes through the mounting cylinder 41 will be close to the inner wall of the mounting cylinder 41. Under long-term use, the connector 50 may push against the inner wall of the mounting cylinder 41, causing the inner wall of the mounting hole on the outside of the mounting cylinder 41 to bear pressure, increasing the risk of the mounting part 31 cracking under stress. Therefore, by placing the other part of the buffer 60 between the mounting cylinder 41 and the inner wall of the mounting through hole 313, the pressure indirectly applied to the mounting part 31 by the connector 50 can be relieved, further reducing the risk of cracking and damage to the mounting part 31.

[0083] Further, at least one of the buffer members 60 includes a buffer cylinder portion 611 and a buffer flange 612, the buffer flange 612 being radially outwardly projected from one end of the buffer cylinder portion 611. The portion of the buffer member 60 located between the mounting flange 42 and the top surface 311 of the mounting portion 31 is the buffer flange 612, or the portion of the buffer member 60 located between the bottom surface 312 of the mounting portion 31 and the battery mounting bracket 400 is the buffer flange 612. The portion of the buffer member 60 extending into the mounting through hole 313 and located between the mounting cylinder portion 41 and the inner wall of the mounting through hole 313 is the buffer cylinder portion 611, which surrounds the mounting cylinder portion 41.

[0084] The buffer cylinder 611 is inserted into the mounting through hole 313 and sleeved on the outside of the mounting cylinder 41. Specifically, it has a hollow shaft-like structure. The buffer flange 612 is a protruding structure provided on the buffer cylinder 611. In use, the buffer flange 612 can abut against the outer side of the mounting through hole 313, that is, the top surface 311 of the mounting part 31, to axially position the buffer cylinder 611. The mounting flange 42 abuts against the side of the buffer flange 612 facing away from the top surface 311 of the mounting part 31. Furthermore, the buffer flange 612 increases the contact area with the mounting flange 42, improving the stability of the connection. The buffer flange 612 is arranged around the buffer cylinder 611. That is, the buffer flange 612 is arranged in a ring shape around the buffer cylinder 611, so that the force on the outer periphery of the buffer cylinder 611 is more even during positioning and support.

[0085] By providing a buffer 60 including a buffer cylinder 611 and a buffer flange 612, the buffer can adapt to the structural shape of the mounting sleeve 40, thereby making the buffer 60 more reliable in buffering the forces between the mounting sleeve 40 and the mounting part 31, as well as between the mounting part 31 and the battery mounting bracket 400.

[0086] In the embodiments of this application, both the first buffer 61 and the second buffer 62 include a buffer cylinder portion 611 and a buffer flange 612. When both the first buffer 61 and the second buffer 62 include a buffer cylinder portion 611 and a buffer flange 612, there should be a certain axial distance between the end of the buffer cylinder portion 611 of the first buffer 61 away from the buffer flange 612 and the end of the buffer cylinder portion 611 of the second buffer 62 away from the buffer flange 612. This reduces the interaction between the two during axial installation relative to the mounting through hole 313, thus affecting the reliability of the installation and consequently the reliability of the buffer.

[0087] In the embodiments of this application, the buffer cylinder portion 611 and the mounting through hole 313 are interference-fitted.

[0088] The interference fit here refers to a fit in which the outer diameter of the buffer cylinder 611 is larger than the inner diameter of the mounting through hole 313, thereby forming a tight connection through the elastic deformation of the material after assembly.

[0089] By setting an interference fit between the buffer cylinder 611 and the mounting through hole 313, the buffer cylinder 611 and the mounting through hole 313 can be tightly connected, making the positioning of the buffer cylinder 611 relative to the mounting part 31 reliable and the buffering effect better.

[0090] In some other embodiments of this application, the mounting cylinder 41 and the buffer cylinder 611 are interference-fitted.

[0091] The interference fit here refers to a fit in which the outer diameter of the buffer cylinder 41 is larger than the inner diameter of the buffer cylinder 611, so that a tight connection is formed by the elastic deformation of the material after assembly.

[0092] By setting an interference fit between the mounting cylinder 41 and the buffer cylinder 611, the mounting cylinder 41 and the buffer cylinder 611 can be tightly connected, making the positioning of the mounting cylinder 41 relative to the buffer cylinder 611 reliable and the buffering effect better.

[0093] In other embodiments, the buffer cylinder portion 611 is interference-fitted with the mounting through hole 313, and the mounting cylinder portion 41 is interference-fitted with the buffer cylinder portion 611.

[0094] According to some embodiments of this application, along a second direction perpendicular to the axial direction of the mounting through hole 313, the outer edge of the buffer flange 612 located between the mounting flange 42 and the top surface 311 of the mounting portion 31 protrudes further than the outer edge of the mounting flange 42.

[0095] The second direction is as follows: Figure 7 Figure 7 The horizontal direction is shown.

[0096] When the outer edge of the buffer flange 612 located between the mounting flange 42 and the top surface 311 of the mounting part 31 protrudes more than the outer edge of the mounting flange 42, the buffer flange 612 has a larger support area for the mounting flange 42, thereby improving the axial buffering effect and reliability between the mounting part 31 and the mounting sleeve 40.

[0097] In the embodiments of this application, the end of the mounting sleeve 40 away from the mounting flange 42 is not provided with another mounting flange 42. This facilitates the installation of the mounting sleeve 40 relative to the mounting through hole 313. In practical applications, the two buffers 60 can be installed on the mounting through hole 313 of the mounting part 31 first. Further, the end of the mounting sleeve 40 without the mounting flange 42 is sequentially passed through the inner holes of the two buffers 60. The connector 50 can then pass through the inner hole of the mounting sleeve 40 and connect to the battery mounting bracket 400.

[0098] Furthermore, according to some embodiments of this application, the end of the mounting cylinder 41 facing the battery mounting bracket 400 has a first end face 411, and the buffer 60 disposed between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400 has a second end face 613 facing the battery mounting bracket 400. The battery device 100 has a mounted state and an unmounted state, and the buffer 60 is elastic. When in the mounted state, the buffer 60 is compressed, and both the first end face 411 and the second end face 613 abut against the battery mounting bracket 400; when in the unmounted state, the buffer 60 is not compressed, and the first end face 411 is positioned further away from the battery mounting bracket 400 than the second end face 613.

[0099] The buffer 60 located between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400 has a second end face 613 at the end facing the battery mounting bracket 400, which means that the second buffer 62 has a second end face 613.

[0100] The mounted state refers to the state in which the battery device 100 is successfully connected to the battery mounting bracket 400, thus being fixed and able to transmit loads; the unmounted state refers to the state in which the battery device 100 is not connected to the battery mounting bracket 400 or is not successfully connected, thus being unable to be fixed and unable to transmit loads.

[0101] In the mounted state, the buffer 60 is compressed, and both its first end face 411 and second end face 613 abut against the battery mounting bracket 400. Therefore, the mounting sleeve 40 forms a rigid connection with the battery mounting bracket 400 through its first end face 411, and the opposite end of the mounting sleeve 40 can also form a rigid connection with the connector 50. This reduces the risk of slippage during soft connection locking and improves the reliability of the connection between the mounting part 31 and the battery mounting bracket 400 via the connector 50 and the mounting sleeve 40. In the unmounted state, the buffer 60 is not compressed, and its first end face 411 is positioned further away from the battery mounting bracket 400 than its second end face 613. This satisfies the compression stroke of the buffer 60 from the unmounted state to the mounted state, improving the buffer reliability after compression.

[0102] The soft connection here refers to the connection state where the first end face 411 of the mounting sleeve 40 cannot abut against the battery mounting bracket 400, and the battery mounting bracket 400 only abuts against the elastic buffer 60. When the soft connection exists, the battery mounting bracket 400 and the elastic buffer 60 may creep or elastic rebound during continuous rotation, resulting in the actual clamping force being lower than the theoretical calculation value, thus exhibiting the phenomenon of "torsion slippage". In this case, the reliability of the connection will be reduced.

[0103] Optionally, the buffer 60 can be made of rubber. Using rubber components can give the buffer 60 excellent shock absorption and cushioning performance, making it adaptable to complex environments and with low manufacturing costs.

[0104] According to some embodiments of this application, the battery body 30 includes a housing 10, the housing 10 having a mounting part 31, and the housing 10 is an injection-molded housing 10.

[0105] The injection-molded box 10 refers to the box structure 10 integrally formed through the injection molding process.

[0106] When the housing 10 is injection molded, it is more conducive to weight reduction and cost reduction compared to a metal housing 10. In addition, when the housing 10 is injection molded, its rigidity in the mounting part 31 is reduced. Therefore, by providing a buffer 60 between the mounting flange 42 and the top surface 311 of the mounting part 31, and by providing another buffer 60 between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400, the forces between the mounting part 31 and the battery mounting bracket 400, and between the mounting part 31 and the connector 50, can be buffered, thereby reducing the risk of cracking and failure of the mounting part 31 and improving the reliability of the mounting part 31.

[0107] According to some embodiments of this application, the battery body 30 includes a housing 10, the housing 10 having a receiving cavity 13, the housing 10 also having a first side wall 14, a mounting part 31 being disposed on the side of the first side wall 14 away from the receiving cavity 13, and a buffer structure 15 being provided on the side of the first side wall 14 facing the receiving cavity 13.

[0108] The receiving cavity 13 is a cavity for accommodating the battery cell 20. The first sidewall 14 can be a sidewall on the first part 11 of the housing 10 or a sidewall on the second part 12.

[0109] The buffer structure 15 refers to a structure capable of buffering external forces. Specifically, the buffer structure 15 can buffer external forces applied to the components within the receiving cavity 13 through the first sidewall 14, such as buffering the force applied to the battery cell 20. It is understood that the battery device 100 may be subjected to a side impact force. In this case, the first sidewall 14 absorbs the side impact force and transmits it into the receiving cavity 13. At this time, due to the provision of the buffer structure 15, the side impact force can be buffered, thereby reducing damage to the components within the receiving cavity 13.

[0110] Therefore, by providing a buffer structure 15 on the inner side of the first sidewall 14 with the mounting part 31, the structural reliability of the first sidewall 14 can be enhanced, and the external force on the first sidewall 14 can be buffered in time, reducing damage to the mounting part 31, the first sidewall 14 and the components in the receiving cavity 13.

[0111] Furthermore, the buffer structure 15 includes a plurality of buffer cavities 151, all of which are arranged along the length of the first sidewall 14.

[0112] By setting the buffer cavity 151, it has a certain energy absorption function, which can absorb and disperse external impacts or loads to a certain extent, thereby protecting the mounting part 31, the first side wall 14 and the components in the receiving cavity 13.

[0113] Specifically, the buffer cavity 151 can be formed by multiple buffer walls 152 together with the bottom wall 16 and the first side wall 14 of the box body 10.

[0114] According to some embodiments of this application, the mounting portion 31 of the first sidewall 14 includes a plurality of mounting portions 31, all mounting portions 31 are spaced apart along the length direction of the first sidewall 14, the orthographic projection of all buffer structures 15 toward the first sidewall 14 forms a first projection area, the orthographic projection of all mounting portions 31 toward the first sidewall 14 forms a second projection area, and the first projection area covers the second projection area.

[0115] The orthographic projection toward the first sidewall 14 refers to the projection toward the first sidewall 14 along a direction perpendicular to the first sidewall 14.

[0116] Therefore, when the first projection area covers the second projection area, all the mounting parts 31 can be affected by the buffer cavity 151, thereby enabling the buffer cavity 151 to reliably absorb and disperse external impacts or loads on the mounting parts 31, reducing the risk of damage to the mounting parts 31 under external force.

[0117] Optionally, the mounting portion 31 of the first sidewall 14 includes three parts, and the three mounting portions 31 are spaced apart from each other along the length direction of the first sidewall 14.

[0118] According to some embodiments of this application, this application also provides an electrical device including the battery device 100 in any of the above embodiments.

[0119] Specifically, the electrical equipment includes the battery mounting bracket 400 in the above embodiments.

[0120] When the battery device 100 is connected to the battery mounting bracket 400, the mounting part 31 bears the force. Since part of one of the buffer members 60 is located between the mounting flange 42 and the top surface 311 of the mounting part 31, it can buffer the force between the mounting sleeve 40 and the top surface 311 of the mounting part 31. Part of the other buffer member 60 is located between the bottom surface 312 of the mounting part 31 and the battery mounting bracket 400, so it can buffer the force between the mounting part 31 and the battery mounting bracket 400, as well as between the mounting part 31 and the connector 50. Therefore, the risk of cracking and failure of the mounting part 31 is reduced, and the reliability of the mounting part 31 is improved.

[0121] 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 for connecting to a battery mounting bracket, characterized in that, The battery device includes: The battery body has a mounting part, which has mounting through holes penetrating its top and bottom surfaces; A mounting sleeve includes a mounting cylinder and a mounting flange. The mounting flange protrudes outward along the radial direction of the mounting sleeve at one end of the mounting cylinder. The mounting cylinder extends into the mounting through hole, and the mounting flange overlaps the top surface of the mounting cylinder. A connector, capable of passing through the cylindrical portion and connecting to the battery mounting bracket; and Two buffer members are arranged opposite each other along the axial direction of the mounting through hole, in a first direction parallel to the axial direction of the mounting through hole. A portion of one buffer member is located between the mounting flange and the top surface of the mounting part; a portion of the other buffer member is located between the bottom surface of the mounting part and the battery mounting bracket.

2. The battery device according to claim 1, characterized in that, At least one of the buffer components has another portion extending into the mounting through hole and located between the mounting cylinder portion and the inner wall of the mounting through hole.

3. The battery device according to claim 2, characterized in that, At least one of the buffer members includes a buffer cylinder portion and a buffer flange, wherein the buffer flange protrudes radially outward from one end of the buffer cylinder portion; The portion of the buffer member located between the mounting flange and the top surface of the mounting portion is the buffer flange, or the portion of the buffer member located between the bottom surface of the mounting portion and the battery mounting bracket is the buffer flange; The portion of the buffer element that extends into the mounting through hole and is located between the mounting cylinder portion and the inner wall of the mounting through hole is the buffer cylinder portion, which is arranged around the mounting cylinder portion.

4. The battery device according to claim 3, characterized in that, The buffer cylinder portion is interference-fitted with the mounting through hole; and / or The mounting cylinder and the buffer cylinder are interference-fitted.

5. The battery device according to claim 3, characterized in that, Along a second direction perpendicular to the axial direction of the mounting through hole, the outer edge of the buffer flange located between the mounting flange and the top surface of the mounting portion protrudes further than the outer edge of the mounting flange.

6. The battery device according to any one of claims 1 to 5, characterized in that, The end of the mounting tube facing the battery mounting bracket has a first end face; The buffer member located between the bottom surface of the mounting portion and the battery mounting bracket has a second end face at the end facing the battery mounting bracket; The battery device has a mounted state and an unmounted state, and the buffer is elastic. When it is in the mounted state, the buffer is compressed, and both the first end face and the second end face abut against the battery mounting bracket. When it is in the unmounted state, the buffer is not compressed, and the first end face is located further away from the battery mounting bracket than the second end face.

7. The battery device according to any one of claims 1 to 5, characterized in that, The battery body includes a housing, the housing has the mounting part, and the housing is an injection-molded housing.

8. The battery device according to any one of claims 1 to 5, characterized in that, The battery body includes a housing with a receiving cavity and a first side wall. The mounting part is located on the side of the first side wall away from the receiving cavity, and a buffer structure is provided on the side of the first side wall facing the receiving cavity.

9. The battery device according to claim 8, characterized in that, The buffer structure includes multiple buffer cavities, all of which are arranged along the length of the first sidewall.

10. The battery device according to claim 8, characterized in that, The mounting portion of the first sidewall includes a plurality of mounting portions, all of which are spaced apart along the length of the first sidewall. The orthographic projection of all the buffer structures toward the first sidewall forms a first projection area, and the orthographic projection of all the mounting portions toward the first sidewall forms a second projection area. The first projection area covers the second projection area.

11. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 10.

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