Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a first box body, a second box body, a battery monomer, a locking piece, a gasket and a nesting sleeve, the first box body comprises a first end face and a second end face opposite to the first end face, the first box body is provided with a first via hole, and the first via hole extends from the first end face to the second end face. The second box body is provided with a second through hole, the second box body and the first box body are oppositely arranged, and the second box body and the first box body define a containing space. The battery monomers are arranged in the accommodating space; the locking piece penetrates through the first through hole and the second through hole and is used for connecting the first box body and the second box body. The gasket is arranged on the locking piece in a sleeving mode and arranged on the side, facing the first end face, of the locking piece. The nesting sleeve is arranged in the first through hole in a penetrating mode, and at least part of the nesting sleeve is arranged between the first end face and the gasket and abuts against the first end face. And through the nesting, friction cannot occur between the gasket and the first box body, the probability that the first box body is abraded is reduced, and the service life of the first box body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device and electrical equipment. Background Art

[0002] The battery device includes a first housing, a second housing and a battery cell. The battery cell is arranged in a containing space formed by the first housing and the second housing. When manufacturing the battery device, a locking member is usually used to connect the first housing and the second housing together. In addition, a gasket is sleeved on the locking member to disperse the force borne by the locking member when it is locked, so as to avoid wear of the locking member. However, during use, the battery device may be twisted, which may cause friction between the first housing and the gasket, thereby causing wear of the first housing and reducing the service life of the first housing. Utility Model Content

[0003] The utility model provides a battery device and electrical equipment, which can solve the problem that the first box body is worn due to the mutual friction between the first box body and the gasket, thereby reducing the service life of the first box body.

[0004] The battery device of the embodiment of the utility model includes a first box body, a second box body, a battery cell, a locking member, a gasket and a nest. The first box body includes a first end face and a second end face opposite to the first end face, and the first box body is provided with a first through hole, and the first through hole extends from the first end face to the second end face. The second box body is provided with a second through hole, and the second box body is arranged opposite to the first box body, and the second box body and the first box body enclose a storage space. The battery cell is arranged in the storage space. The locking member is passed through the first through hole and the second through hole, and the locking member is used to connect the first box body and the second box body. The gasket is sleeved on the locking member, and the gasket is arranged on the side of the locking member facing the first end face. The nest is passed through the first through hole, and at least part of the nest is arranged between the first end face and the gasket and abuts against the first end face.

[0005] In the battery device of the embodiment of the utility model, the nesting can realize the hard connection between the first box and the locking member, so that the locking member is not prone to connection failure. Since at least part of the nesting is arranged between the first end face and the gasket, direct contact between the first box and the gasket is avoided. Therefore, no friction occurs between the gasket and the first box, which reduces the probability of the first box being worn, thereby improving the service life of the first box. In addition, since at least part of the nesting abuts against the first end face, there is no relative movement between the nesting and the first box, so there is no mutual friction, thereby effectively protecting the first box from damage caused by torsional force.

[0006] In some embodiments, the nesting includes a first flange portion and a main body portion connected to the first flange portion at an angle, the first flange portion is arranged between the first end face and the gasket, and the opposite side surfaces of the first flange portion are respectively abutted against the first end face and the gasket.

[0007] In this way, the first flange can not only be used to separate the first end face and the gasket, thereby avoiding direct contact between the first box and the gasket, but also seal the gap between the first end face and the gasket. In addition, the flange connection has the characteristics of easy disassembly and replacement. When the nesting needs to be disassembled, the first flange can be used to achieve simple and quick disassembly of the nesting, which can reduce damage to the first box and the nesting during the disassembly process.

[0008] In addition, the first flange portion of the nest is connected to the main body at an angle, providing a structurally more stable support point, enhancing the connection rigidity between the nest and the first box body, so as to reduce the probability of relative movement between the nest and the first box body when the battery device is subjected to external force, thereby improving the connection stability between the nest and the first box body.

[0009] In some embodiments, the main body is inserted into the first through hole, and an interference fit is formed between the main body and the first through hole.

[0010] In this way, the interference fit between the main body and the first via means that the main body can be tightly fixed in the first via. This tight fit can improve the firmness of the connection, making it difficult for the main body to loosen or shift in the first via, thereby reducing the probability of falling off and slipping during installation and use.

[0011] In some embodiments, the nesting is provided with a notch, and the notch runs through the first flange portion and the main body portion.

[0012] In this way, the setting of the notch helps to improve the elastic performance of the nesting. The notch can serve as a stress concentration area, effectively absorbing and dispersing the stress generated during the interference fit process, and allowing the nesting to have controlled local deformation during the interference fit process, thereby reducing the force of the nesting on the first box body, and further reducing the risk of the first box body bursting.

[0013] In some embodiments, the locking member includes a bolt and a nut, the nut is inserted into the second through hole, the nut is formed with a mounting hole, and the bolt is inserted into the first through hole and inserted into the mounting hole.

[0014] In this way, the fastening method of bolts and nuts can provide sufficient pre-tightening force to ensure the safety of the first box body and the second box body under various use conditions and prevent accidental loosening. In addition, since bolts and nuts are standardized components, their cost is relatively low, which helps to reduce the overall manufacturing cost of the battery device.

[0015] In some embodiments, the bolt includes a first body and a second flange portion connected to the first body at an angle, the gasket is sleeved on the first body, and the second flange portion abuts against a side of the gasket facing away from the first end face.

[0016] In this way, during the bolt locking process, local stress concentration may occur in the second flange part, and the gasket can evenly distribute the stress to a larger area, thereby reducing the probability of bolt damage due to excessive local stress, and further reducing the probability of connection failure.

[0017] In some embodiments, the nut includes a second body and a third flange portion connected to the second body at an angle, the third flange portion is arranged between the second end face and the second box body, and the opposite side surfaces of the third flange portion are respectively abutted against the second end face and the second box body.

[0018] In this way, the third flange of the nut is connected to the second body at an angle, providing a more structurally stable support point, enhancing the connection rigidity between the nut and the second box, thereby improving the connection stability between the nut and the second box. Due to the abutment of the third flange with the second end face and the second box, the nut can remain stable when the battery device is subjected to external force, thereby improving the nut's ability to resist vibration and impact, and further improving the long-term operation reliability of the nut.

[0019] In some embodiments, the second body is connected to the bolt, the second body is inserted into the second through hole, and the second body and the second through hole are interference fit.

[0020] Thus, the interference fit between the second body and the second through hole means that the second body can be tightly fixed in the second through hole. This tight fit can improve the firmness of the connection, so that the second body is not easy to loosen or move in the second through hole, thereby reducing the probability of the nut falling off and slipping during installation and use.

[0021] In some embodiments, the battery device further includes a seal, which is disposed between the first box body and the second box body, and whose opposite side surfaces are respectively in contact with the first box body and the second box body, and the seal is provided with a third through hole, and the third flange portion is disposed in the third through hole.

[0022] Thus, by providing a seal between the first box and the second box, the influence of external environmental factors on the battery cell, such as dust, moisture, etc., can be effectively isolated, thereby improving the reliability and durability of the battery device. The seal can be used to seal the gap between the third flange and the second end face of the first box, and to seal the gap between the third flange and the second box, thereby improving the sealing effect between the nut and the first box, and improving the sealing effect between the nut and the second box.

[0023] The electrical equipment of the embodiment of the utility model comprises the battery device described in any one of the above embodiments.

[0024] Since the electrical equipment includes the above-mentioned battery device, the electrical equipment at least includes all the beneficial effects of the above-mentioned battery device, which will not be described in detail here.

[0025] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the electrical equipment provided by some embodiments of the utility model;

[0028] Figure 2 It is a schematic diagram of the structure of a battery device provided in some embodiments of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the battery device provided by other embodiments of the utility model;

[0030] Figure 4 yes Figure 3 A cross-sectional view of a battery device in the AA direction;

[0031] Figure 5 yes Figure 4 An enlarged view of part B of the battery device;

[0032] Figure 6 It is a structural schematic diagram of a first box provided in some embodiments of the utility model;

[0033] Figure 7yes Figure 6 An enlarged view of part C of the first housing;

[0034] Figure 8 It is a schematic diagram of a nested structure provided by some embodiments of the utility model.

[0035] Description of Figure Numbers:

[0036] Electrical equipment 1000; battery device 100; controller 200; motor 300; first housing 10; first end face 11; second end face 12; first through hole 13; second housing 20; second through hole 21; accommodating space 101; battery cell 30; locking member 40; gasket 50; nesting 60; first flange portion 61; main body portion 62; notch 63; first part 14; second part 15; bolt 41; nut 42; mounting hole 420; annular groove 421; first body 410; second flange portion 411; second body 422; third flange portion 423; sealing member 70; third through hole 71. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present utility model, the technical terms "first", "second", etc. 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 utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present utility model, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0044] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0045] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.

[0046] The battery device includes a first box, a second box and a battery cell. The battery cell is arranged in a containing space formed by the first box and the second box. In order to ensure the safety and stability of the battery cell, the first box and the second box need to be firmly connected together through a locking member.

[0047] In order to disperse the force borne by the locking member when it is locked, a gasket can be set on the locking member to prevent the locking member from being worn. However, during use, the battery device will be twisted, which will cause friction between the first box and the gasket. When the battery device is twisted, relative movement will occur between the first box and the gasket, and the adjacent side surfaces of the first box and the gasket will rub against each other, thereby causing the first box to be worn and reducing the service life of the first box.

[0048] In order to solve the above problems, the embodiment of the utility model provides a battery device, which includes a nesting, at least part of which is nested between the first box and the gasket and abuts against the first box. The nesting can separate the gasket and the first box, thereby avoiding direct contact between the first box and the gasket. Therefore, no friction occurs between the gasket and the first box, which reduces the probability of the first box being worn, thereby increasing the service life of the first box.

[0049] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of the electric device 1000 provided by some embodiments of the utility model. The electric device 1000 of the utility model embodiment uses a battery or a battery cell as a power source, and the electric device 1000 can be but not limited to a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0050] For the convenience of description, the following embodiments are described by taking an electric device 1000 according to an implementation mode of the utility model as a vehicle as an example.

[0051] The battery device 100 is disposed inside the vehicle, and the battery device 100 can be disposed at the bottom, head, or tail of the vehicle. The battery device 100 can be used to power the vehicle, for example, the battery device 100 can be used as an operating power source for the vehicle.

[0052] The vehicle may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery device 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle.

[0053] In the embodiment of the utility model, the battery device 100 can not only be used as the operating power source of the vehicle, but also can be used as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0054] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 . Figure 2 is a schematic diagram of the structure of a battery device 100 provided in some embodiments of the present utility model; Figure 3 is a schematic structural diagram of a battery device 100 provided in some other embodiments of the present utility model; Figure 4 yes Figure 3 A cross-sectional view of the battery device 100 along the AA direction; Figure 5 yes Figure 4 An enlarged view of part B of the battery device 100 is shown.

[0055] The battery device 100 of the embodiment of the utility model comprises a first box body 10, a second box body 20, a battery cell 30, a locking member 40, a gasket 50 and a nesting 60. The first box body 10 comprises a first end face 11 and a second end face 12 opposite to the first end face 11, and the first box body 10 is provided with a first through hole 13, and the first through hole 13 extends from the first end face 11 to the second end face 12. The second box body 20 is provided with a second through hole 21, and the second box body 20 is arranged opposite to the first box body 10, and the second box body 20 and the first box body 10 enclose a containing space 101. The battery cell 30 is arranged in the containing space 101.

[0056] The locking member 40 is provided through the first through hole 13 and the second through hole 21, and the locking member 40 is used to connect the first box body 10 and the second box body 20. The gasket 50 is sleeved on the locking member 40, and the gasket 50 is arranged on the side of the locking member 40 facing the first end face 11. The nesting 60 is provided through the first through hole 13, and at least part of the nesting 60 is arranged between the first end face 11 and the gasket 50 and abuts against the first end face 11.

[0057] Specifically, the battery device 100 mentioned in the embodiment of the present invention refers to a single physical module including one or more battery cells 30 to provide higher voltage and capacity. For example, the battery device 100 mentioned in the embodiment of the present invention may include a battery module or a battery pack. The battery device 100 generally includes a box for encapsulating one or more battery cells 30. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 30.

[0058] The battery cell 30 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., and the embodiments of the present invention are not limited to this. The battery cell 30 may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present invention are not limited to this. The battery cell 30 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present invention are not limited to this.

[0059] In the battery device 100, when there are multiple battery cells 30, the multiple battery cells 30 can be connected in series, in parallel or in mixed connection. Mixed connection means that the multiple battery cells 30 are both connected in series and in parallel. Multiple battery cells 30 can be connected in series, in parallel or in mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel or in mixed connection to form a whole and accommodated in a box. Alternatively, all battery cells 30 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by all battery cells 30 is accommodated in the box.

[0060] In some embodiments, the battery device 100 may further include a busbar, through which multiple battery cells 30 may be electrically connected to each other, so as to realize series connection, parallel connection or mixed connection of multiple battery cells 30. The busbar may be a metal conductor, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0061] In some embodiments, the battery device 100 may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0062] The box is a component for accommodating the battery cell 30. The box provides a storage space 101 for the battery cell 30. The box can adopt a variety of structures. In some embodiments, the box can include a first box 10 and a second box 20. The first box 10 and the second box 20 cover each other to define a storage space 101 for accommodating the battery cell 30. The outer edge of the first box 10 and the outer edge of the second box 20 can be aligned to facilitate the covering of the first box 10 and the second box 20.

[0063] The first box 10 and the second box 20 can be in various shapes, such as a cuboid, a cylinder, etc. The first box 10 can be a hollow structure with one side open, and the second box 20 can also be a hollow structure with one side open, and the open side of the second box 20 covers the open side of the first box 10, so as to form a box with a storage space 101. Alternatively, the second box 20 can be a hollow structure with one side open, and the first box 10 can be a plate-shaped structure, and the first box 10 covers the open side of the second box 20, so as to form a box with a storage space 101.

[0064] The first through hole 13 may be a through hole provided on the first housing 10. The number of the first through holes 13 may be one or more to meet different connection requirements. The second through hole 21 may be a through hole provided on the second housing 20. The central axis of the second through hole 21 may be colinear with the central axis of the first through hole 13. The second through hole 21 may cooperate with the first through hole 13 and the locking member 40 to lock the first housing 10 and the second housing 20. The number of the second through holes 21 may be one or more to meet different connection requirements.

[0065] The materials of the first box body 10 and the second box body 20 can be the same or different. For example, the material of the first box body 10 can be a composite material, such as carbon fiber or unsaturated polyester glass fiber reinforced molding compound. The material of the second box body 20 can be a metal, such as aluminum or steel. In order to meet the requirements of higher structural strength and lighter weight, the first box body 10 can be made of a composite material. The second box body 20 can be made of a metal material. In order to achieve a hard connection to prevent locking failure, a nest 60 can be provided between the locking member 40 and the first box body 10. The nest 60 can also be provided with a through hole for the locking member 40 to pass through.

[0066] The locking member 40 is used to lock the first box body 10 and the second box body 20. There may be multiple locking members 40, and the multiple locking members 40 may be arranged at intervals along the circumference of the battery device 100. The multiple locking members 40 can provide more connection points and greater locking force, thereby improving the connection stability between the first box body 10 and the second box body 20. The locking member 40 may be a bolt 41, a nut 42, a pin or a rivet, etc. In order to disperse the pressure on the locking member 40, a gasket 50 may be provided on the side of the locking member 40 facing the first end face 11. The gasket 50 can evenly distribute the pressure to a larger area, thereby reducing the probability of damage to the locking member 40 due to excessive local pressure, thereby reducing the probability of connection failure.

[0067] The nest 60 can be made of metal materials, such as steel, aluminum, copper, etc. During the locking process of the locking member 40, the gasket 50 sleeved on the locking member 40 presses against the nest 60, so that the nest 60 and the first end face 11 of the first box body 10 abut against each other to achieve a hard connection between the first box body 10 and the locking member 40. The nest 60 can raise the gasket 50, thereby increasing the distance between the gasket 50 and the first end face 11 of the first box body 10. Since the nest 60 is located between the gasket 50 and the first end face 11 of the first box body 10, and the nest 60 abuts against the first end face 11 of the first box body 10, the gasket 50 and the first end face 11 of the first box body 10 cannot contact each other. The nest 60 plays a role in separating the first end face 11 of the first box body 10 and the gasket 50, so that the first end face 11 of the first box body 10 and the gasket 50 can be spaced apart during the twisting process of the battery device 100.

[0068] In the battery device 100 of the embodiment of the utility model, the nesting 60 can realize the hard connection between the first box body 10 and the locking member 40, so that the locking member 40 is not prone to connection failure. Since at least part of the nesting 60 is arranged between the first end face 11 and the gasket 50, direct contact between the first box body 10 and the gasket 50 is avoided. Therefore, no friction occurs between the gasket 50 and the first box body 10, which reduces the probability of the first box body 10 being worn, thereby improving the service life of the first box body 10. In addition, since at least part of the nesting 60 abuts against the first end face 11, there is no relative movement between the nesting 60 and the first box body 10, so there is no mutual friction, thereby effectively protecting the first box body 10 from damage caused by torsional force.

[0069] Please refer to Figure 5 , Figure 6 and Figure 7 . Figure 6 It is a structural schematic diagram of the first box body 10 provided in some embodiments of the utility model; Figure 7 yes Figure 6 FIG. 6 is an enlarged view of the C portion of the first box body 10. In some embodiments, the nest 60 includes a first flange portion 61 and a main body portion 62 connected to the first flange portion 61 at an angle, the first flange portion 61 is disposed between the first end face 11 and the gasket 50, and the opposite side surfaces of the first flange portion 61 are respectively in contact with the first end face 11 and the gasket 50.

[0070] Specifically, the first flange portion 61 can be connected to one end of the main body portion 62 and protrude from one side of the main body portion 62 along the radial direction of the nest 60. One of the two opposite side surfaces of the first flange portion 61 can abut against the first end surface 11, and the other can abut against the gasket 50 to separate the first end surface 11 and the gasket 50.

[0071] The angle between the first flange portion 61 and the main body portion 62 may be an acute angle, a right angle, or an obtuse angle. The angle between the first flange portion 61 and the main body portion 62 may be adapted to the corresponding area of ​​the first housing 10. For example, the first end face 11 and the second end face 12 are arranged in parallel. The first through hole 13 is a linear through hole arranged parallel to the thickness direction of the first housing 10. The angle between the first flange portion 61 and the main body portion 62 may be a right angle, and the main body portion 62 may extend along the thickness direction of the first housing 10. In this way, the first flange portion 61 and the first end face 11 may be tightly fitted, which can enhance the sealing effect of the nesting 60 between the first flange portion 61 and the first end face 11.

[0072] In this way, the first flange portion 61 can not only be used to separate the first end face 11 and the gasket 50, thereby avoiding direct contact between the first box body 10 and the gasket 50, but also can seal the gap between the first end face 11 and the gasket 50. In addition, the flange connection has the characteristics of easy disassembly and replacement. When the nest 60 needs to be disassembled, the nest 60 can be easily and quickly disassembled through the first flange portion 61, which can reduce the damage to the first box body 10 and the nest 60 during the disassembly process.

[0073] In addition, the first flange portion 61 of the nest 60 is connected to the main body portion 62 at an angle, providing a structurally more stable support point, thereby enhancing the connection rigidity between the nest 60 and the first box body 10, so as to reduce the probability of relative movement between the nest 60 and the first box body 10 when the battery device 100 is subjected to external force, thereby improving the connection stability between the nest 60 and the first box body 10.

[0074] Please refer to Figure 5 In some embodiments, the main body 62 is inserted into the first through hole 13 , and the main body 62 and the first through hole 13 are interference fit.

[0075] Specifically, the interference between the main body 62 and the first through hole 13 can range from 0.1mm to 0.3mm. For example, 0.1mm, 0.15mm, 0.20mm, 0.25mm, 0.3mm, etc. Within this numerical range, the fit between the main body 62 and the first through hole 13 will not be too tight to be assembled, nor too loose to ensure the firmness of the connection. The main body 62 can achieve a firm connection in the first through hole 13 to prevent loosening due to vibration or impact. The contact stress between the main body 62 and the first through hole 13 will be evenly distributed, reducing local stress concentration, thereby reducing the risk of damage to the first box body 10.

[0076] In this way, the interference fit between the main body 62 and the first through hole 13 means that the main body 62 can be tightly fixed in the first through hole 13. This tight fit can improve the firmness of the connection, so that the main body 62 is not easy to loosen or displace in the first through hole 13, thereby reducing the probability of the nest 60 falling off and slipping during installation and use.

[0077] Please refer to Figure 5 , Figure 7 and Figure 8 . Figure 8 6 is a schematic diagram of the structure of the nesting 60 provided in some embodiments of the present invention. In some embodiments, the nesting 60 is provided with a notch 63, and the notch 63 passes through the first flange portion 61 and the main body portion 62.

[0078] Specifically, the first box body 10 may include a first portion 14 and a second portion 15. The first portion 14 is closer to the outer edge of the first box body 10 than the second portion 15. The first portion 14 and the second portion 15 are located on both sides of the nest 60, respectively.

[0079] After the nest 60 is inserted into the first through hole 13, the nest 60 will be squeezed with the first part 14 and the second part 15, which may cause the first part 14 and the second part 15 to rupture. Since the first part 14 is closer to the outer edge of the first box body 10 than the second part 15, the risk of rupture of the first part 14 is higher than that of the second part 15.

[0080] In order to solve the problem that the first part 14 and the second part 15 may be ruptured, a notch 63 that passes through the first flange part 61 and the main body part 62 may be provided on the nest 60. The notch 63 can improve the elastic performance of the nest 60. When the nest 60 is pressed into the first through hole 13 and is interference-fitted with the first box body 10, the notch 63 area becomes a stress concentration area, so that the stress is released here instead of being transferred to the first part 14 and the second part 15 of the first box body 10.

[0081] The width of the notch 63 may be related to the interference between the main body 62 and the first through hole 13. The ratio of the interference to the width of the notch 63 may be in the range of 0.1 to 0.2. For example, when the interference is in the range of 0.1 mm to 0.3 mm, the width of the notch 63 may be in the range of 1 mm to 1.5 mm. Within this numerical range, the nest 60 may have a higher elastic performance, thereby being able to absorb the force of the nest 60 on the first box body 10 during the interference fit process, thereby being able to reduce the risk of the first box body 10 bursting.

[0082] In this way, the setting of the notch 63 helps to improve the elastic performance of the nest 60. The notch 63 can serve as a stress concentration area to effectively absorb and disperse the stress generated during the interference fit process, and allow the nest 60 to have controlled local deformation during the interference fit process, thereby reducing the force of the nest 60 on the first box body 10, and further reducing the risk of the first box body 10 bursting.

[0083] Please refer to Figure 5 In some embodiments, the locking member 40 includes a bolt 41 and a nut 42 . The nut 42 is passed through the second through hole 21 . The nut 42 is formed with a mounting hole 420 . The bolt 41 is passed through the first through hole 13 and inserted into the mounting hole 420 .

[0084] Specifically, the locking member 40 can be attached to the first housing 10 and the second housing 20 by a riveting process. The nut 42 can be a riveting nut, a hexagonal nut, a flange nut, etc., and the inside of the nut 42 can be provided with an internal thread. The bolt 41 can be provided with an external thread. The bolt 41 can be spaced from the nest 60 to avoid interference. A gasket 50 can be sleeved on the bolt 41 to disperse the pressure on the bolt 41. The top of the nut 42 can abut against the nest 60 to support the nest 60.

[0085] In some embodiments, the nut 42 is a rivet nut. During the assembly process, the nut 42 is inserted into the second through hole 21. Subsequently, the bolt 41 is inserted into the mounting hole 420 of the rivet nut until the external thread of the bolt 41 is fully engaged with the internal thread of the rivet nut. Then, the rivet nut is riveted using a rivet gun or other special tools. During the riveting process, the annular groove 421 of the rivet nut is squeezed and deformed to form a firm riveting point, fixing the rivet nut in the through hole of the second box body 20.

[0086] In this way, the fastening method of the bolt 41 and the nut 42 can provide sufficient pre-tightening force to ensure the safety of the first box body 10 and the second box body 20 under various use conditions and prevent accidental loosening. In addition, since the bolt 41 and the nut 42 are standardized components, their cost is relatively low, which helps to reduce the overall manufacturing cost of the battery device 100.

[0087] Please refer to Figure 5 In some embodiments, the bolt 41 includes a first body 410 and a second flange portion 411 connected to the first body 410 at an angle, a gasket 50 is sleeved on the first body 410, and the second flange portion 411 abuts against a side of the gasket 50 away from the first end face 11.

[0088] Specifically, the first body 410 is a portion of the bolt 41 for connecting with the nut 42. The first body 410 may be provided with an external thread.

[0089] The second flange 411 is a portion of the bolt 41 for cooperating with the gasket 50. The second flange 411 may protrude from one side of the first body 410 along the radial direction of the bolt 41. The second flange 411 may be located on the side of the gasket 50 away from the nesting 60. The area of ​​the surface where the second flange 411 contacts the gasket 50 may be smaller than the area of ​​the surface where the gasket 50 contacts the second flange 411. During the locking process, the second flange 411 may be subjected to external forces that can be dispersed to the gasket 50, thereby reducing the degree of wear of the second flange 411 and increasing the service life of the bolt 41.

[0090] Thus, during the locking process of the bolt 41 , the second flange portion 411 may generate local stress concentration, and the gasket 50 can evenly distribute the stress to a larger area, thereby reducing the probability of damage to the bolt 41 due to excessive local stress, thereby reducing the probability of connection failure.

[0091] Please refer to Figure 5 In some embodiments, the nut 42 includes a second body 422 and a third flange portion 423 connected to the second body 422 at an angle, the third flange portion 423 is arranged between the second end face 12 and the second box body 20, and the two opposite side faces of the third flange portion 423 are respectively abutted against the second end face 12 and the second box body 20.

[0092] Specifically, the second body 422 is a portion of the nut 42 for connecting with the bolt 41. An internal thread may be provided on the second body 422. The third flange portion 423 may be connected to one end of the second body 422 and protrude from one side of the second body 422 in the radial direction of the nut 42. The two opposite side surfaces of the third flange portion 423 may be the top surface and the bottom surface of the third flange portion 423. The top surface of the third flange portion 423 may abut against the second end surface 12. The bottom surface of the third flange portion 423 may abut against the second box body 20. The top surface of the third flange portion 423 may also abut against the nesting 60 for supporting the nesting 60.

[0093] In this way, the third flange portion 423 of the nut 42 is connected to the second body 422 at an angle, providing a more structurally stable support point, enhancing the connection rigidity between the nut 42 and the second box body 20, thereby improving the connection stability between the nut 42 and the second box body 20. Due to the abutment of the third flange portion 423 with the second end face 12 and the second box body 20, the nut 42 can remain stable when the battery device 100 is subjected to external force, thereby improving the ability of the nut 42 to resist vibration and impact, and further improving the reliability of the long-term operation of the nut 42.

[0094] Please refer to Figure 5 In some embodiments, the second body 422 is connected to the bolt 41 , the second body 422 is inserted into the second through hole 21 , and the second body 422 and the second through hole 21 are interference fit.

[0095] Specifically, the second body 422 and the bolt 41 may be threadedly connected. The internal thread on the second body 422 may be engaged with the external thread on the bolt 41 to achieve the connection between the second body 422 and the bolt 41 .

[0096] In this way, the interference fit between the second body 422 and the second through hole 21 means that the second body 422 can be tightly fixed in the second through hole 21. This tight fit can improve the firmness of the connection, so that the second body 422 is not easy to loosen or move in the second through hole 21, thereby reducing the probability of the nut 42 falling off and slipping during installation and use.

[0097] Please refer to Figure 5 In some embodiments, the battery device 100 further includes a seal 70, which is disposed between the first box body 10 and the second box body 20, and the two opposite side surfaces of the seal 70 are respectively in contact with the first box body 10 and the second box body 20, and the seal 70 is provided with a third through hole 71, and the third flange portion 423 is disposed in the third through hole 71.

[0098] Specifically, the first box body 10 and the second box body 20 can be sealed by a seal 70, or the seal 70 is used to seal the gap between the first box body 10 and the second box body 20. The seal 70 can be a sealing ring, a sealant, etc. For example, the seal 70 can be a gasket or an O-ring made of rubber, silicone or other elastic materials. The shape of the seal 70 can be adapted to the shape of the first box body 10 and the second box body 20. For example, the shape of the seal 70 can be a rectangular ring, providing a continuous seal between the first box body 10 and the second box body 20. The seal 70 can be a continuous structure or a segmented structure. For example, along the circumference of the battery device 100, the seal 70 is a continuous annular structure. For another example, along the circumference of the battery device 100, the seal 70 includes four parts connected end to end, and the four parts constitute an annular structure.

[0099] The outer edge of the seal 70 may be retracted relative to the outer edge of the first box 10 and the outer edge of the second box 20, or in other words, it may be recessed on one side of the outer edge of the first box 10 along the direction in which the outer edge of the first box 10 points to the inside of the first box 10, or along the direction in which the outer edge of the second box 20 points to the inside of the second box 20. The outer edge of the seal 70 may also be flush with the outer edge of the first box 10 and the outer edge of the second box 20, which can make the overall structure of the battery device 100 more compact. The direction in which the outer edge of the first box 10 points to the inside of the first box 10, or the direction in which the outer edge of the second box 20 points to the inside of the second box 20 may be the length direction or the width direction of the battery device 100.

[0100] It should be noted that in Figure 5 In order to facilitate understanding, there is an overlapping portion between the sealing member 70 and the first box body 10, but this is only a diagram for ease of understanding and cannot be used as a limitation on the implementation of the present utility model.

[0101] Thus, by providing the seal 70 between the first housing 10 and the second housing 20, the influence of external environmental factors on the battery cell 30, such as dust, moisture, etc., can be effectively isolated, thereby improving the reliability and durability of the battery device 100. The seal 70 can be used to seal the gap between the third flange portion 423 and the second end surface 12 of the first housing 10, and to seal the gap between the third flange portion 423 and the second housing 20, thereby improving the sealing effect between the nut 42 and the first housing 10, and improving the sealing effect between the nut 42 and the second housing 20.

[0102] Please refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 In a specific embodiment, the battery device 100 includes a first box body 10 , a second box body 20 , a battery cell 30 , a locking member 40 , a gasket 50 , and a nest 60 .

[0103] The first box body 10 includes a first end face 11 and a second end face 12 opposite to the first end face 11. The second box body 20 is arranged opposite to the first box body 10, and the second box body 20 and the first box body 10 enclose an accommodating space 101. The battery cell 30 is arranged in the accommodating space 101 to provide energy for the entire battery device 100. The first box body 10 is connected to the second box body 20 through a first through hole 13 arranged between the first end face 11 and the second end face 12. The second box body 20 is provided with a second through hole 21 corresponding to the first through hole 13.

[0104] The locking member 40 is provided through the first through hole 13 and the second through hole 21, and is used to connect the first box body 10 and the second box body 20. The locking member 40 includes a bolt 41 and a nut 42, and is used to firmly connect the first box body 10 and the second box body 20 together. The nut 42 is provided through the second through hole 21 and forms a mounting hole 420. The bolt 41 is provided through the first through hole 13 and inserted into the mounting hole 420. The nut 42 is connected to the bolt 41 to achieve locking of the first box body 10 and the second box body 20.

[0105] The bolt 41 includes a first body 410 and a second flange 411 perpendicular to the first body 410. A gasket 50 is sleeved on the first body 410. The gasket 50 is arranged on the side of the second flange 411 facing the first end face 11 to disperse the locking force and protect the second flange 411 from wear.

[0106] The nut 42 includes a second body 422 and a third flange portion 423 perpendicular to the second body 422. The second body 422 is connected to the bolt 41, penetrates the second through hole 21, and achieves an interference fit with the second through hole 21 to ensure the firmness and stability of the connection. The third flange portion 423 is arranged between the second end face 12 and the second box body 20, and its two side faces are respectively in contact with the second end face 12 and the second box body 20.

[0107] The nesting 60 is provided through the first through hole 13, and at least part of the nesting 60 is provided between the first end face 11 and the gasket 50 and abuts against the first end face 11. The nesting 60 is used to realize the hard connection between the first box body 10 and the locking member 40. The nesting 60 includes a first flange portion 61 and a main body portion 62 which is perpendicular to the first flange portion 61. The first flange portion 61 is located between the first end face 11 and the gasket 50, and its two side surfaces abut against the first end face 11 and the gasket 50 respectively. The first flange portion 61 is used to separate the first end face 11 and the gasket 50, avoid contact between the first end face 11 and the gasket 50, and thus avoid mutual friction between the first end face 11 and the gasket 50.

[0108] The nest 60 is further provided with a notch 63 which penetrates through the first flange portion 61 and the main body portion 62 to improve the elastic performance of the nest 60 and allow controlled local deformation during the interference fit process.

[0109] In order to improve the waterproof and dustproof performance of the battery device 100, a seal 70 is provided between the first box body 10 and the second box body 20. The two opposite side surfaces of the seal 70 are respectively in contact with the first box body 10 and the second box body 20 to form a seal. The seal 70 is provided with a third through hole 71 that penetrates the seal 70 along the thickness direction of the seal 70. The third flange portion 423 is arranged in the third through hole 71 to achieve a better sealing effect.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A first box body, the first box body comprising a first end surface and a second end surface opposite to the first end surface, the first box body being provided with a first through hole, the first through hole extending from the first end surface to the second end surface; a second box body, wherein the second box body is provided with a second through hole, the second box body is arranged opposite to the first box body, and the second box body and the first box body enclose an accommodating space; A battery cell, wherein the battery cell is arranged in the accommodating space; A locking member, the locking member being inserted through the first through hole and the second through hole, and the locking member being used to connect the first box body and the second box body; A gasket, the gasket is sleeved on the locking member, and the gasket is arranged on a side of the locking member facing the first end surface; The nesting is arranged in the first via hole, and at least a part of the nesting is arranged between the first end surface and the gasket and abuts against the first end surface.

2. The battery device according to claim 1, characterized in that: The nesting includes a first flange portion and a main body portion connected to the first flange portion at an angle, the first flange portion is arranged between the first end surface and the gasket, and two opposite side surfaces of the first flange portion are respectively in contact with the first end surface and the gasket.

3. The battery device according to claim 2, characterized in that: The main body is inserted into the first through hole, and the main body and the first through hole are interference-fitted.

4. The battery device according to claim 3, characterized in that: The nesting is provided with a notch, and the notch runs through the first flange part and the main body part.

5. The battery device according to claim 1, characterized in that: The locking member includes a bolt and a nut. The nut is inserted into the second through hole. The nut is formed with a mounting hole. The bolt is inserted into the first through hole and inserted into the mounting hole.

6. The battery device according to claim 5, characterized in that: The bolt comprises a first body and a second flange portion connected to the first body at an angle, the gasket is sleeved on the first body, and the second flange portion abuts against a side of the gasket away from the first end surface.

7. The battery device according to claim 5, characterized in that: The nut includes a second body and a third flange portion connected to the second body at an angle, the third flange portion is arranged between the second end surface and the second box body, and two opposite side surfaces of the third flange portion are respectively in contact with the second end surface and the second box body.

8. The battery device according to claim 7, characterized in that: The second body is connected to the bolt, the second body is penetrated by the second through hole, and the second body and the second through hole are interference fit.

9. The battery device according to claim 7, characterized in that: The battery device further includes a seal, which is disposed between the first box body and the second box body, and whose opposite sides respectively abut against the first box body and the second box body. The seal is provided with a third through hole, and the third flange is disposed in the third through hole.

10. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1-9.

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