Battery device, connection structure and power-consuming device

Abstract

The present application relates to a battery device, a connection structure and an electrical device, comprising: a box body, the box body comprising a first plate body; a rivet nut, which is passed through the first plate body and fixedly connected to the first plate body; an open end is formed at the end of the rivet nut; and a sleeve, one end of the sleeve is sleeved on the open end along the axial direction of the rivet nut, and the other end of the sleeve is a closed end; the battery device comprises a second plate body and a screw; the screw comprises a rod body and a rod head formed on the rod body, the rod body passes through the second plate body and is screwed with the rivet nut, and the second plate body is sandwiched between the rod head and the rivet nut. A battery device, a connection structure and an electrical device according to the embodiment of the present application have the advantage of stable connection.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device, a connection structure and an electrical device. Background Art

[0002] As the application of power battery devices becomes more and more widespread, battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric transportation vehicles such as electric bicycles, electric motorcycles, electric cars, as well as in aerospace and other fields.

[0003] In battery devices, rivet nuts are usually used to connect different plates. However, the battery devices are used in a relatively harsh environment, and the rivet nuts are easily corroded, resulting in connection failure and posing a safety hazard. Utility Model Content

[0004] Based on this, it is necessary to provide a battery device, a connection structure and an electrical device to address the problem of connection failure.

[0005] A first aspect of an embodiment of the present application provides a battery device, comprising: a box body, the box body comprising a first plate body; a rivet nut, which passes through the first plate body and is fixedly connected to the first plate body; an open end is formed at the end of the rivet nut; and a sleeve, one end of the sleeve is sleeved on the open end along the axial direction of the rivet nut, and the other end of the sleeve is a closed end; the battery device comprises a second plate body and a screw rod; the screw rod comprises a rod body and a rod head formed on the rod body, the rod body passes through the second plate body and is screwed with the rivet nut, and the second plate body is clamped between the rod head and the rivet nut.

[0006] In one embodiment, the rivet nut includes a step portion and a main body portion, the main body portion is through-through and has the open end formed at the end, and the step portion is arranged at the top end of the main body portion; the main body portion passes through the first plate body, and a portion of the outer surface of the main body portion is deformed to form a protrusion, and the first plate body is clamped between the step portion and the protrusion.

[0007] In one embodiment, the main body includes a first barrel section and a second barrel section that are integrally connected, the step portion is arranged at the top end of the first barrel section away from the second barrel section, the first barrel section can be deformed to form the protrusion; the bottom end of the second barrel section away from the first barrel section is formed as the open end.

[0008] In one embodiment, a first external thread is formed on the outer peripheral wall of the second barrel section, and a first internal thread matching with the first external thread is formed on the inner wall of the sleeve.

[0009] In one embodiment, a sealant is provided between the sleeve and the open end.

[0010] In one of the embodiments, the sleeve is threadedly connected to the open end; the rod body can drive the sleeve to rotate around the open end to adjust the overall length of the sleeve and the rivet nut.

[0011] In one of the embodiments, the screw rod includes a plurality of wedge blocks, and the wedge blocks are arranged on the end surface of the rod body passing through the rivet nut; and a boss that cooperates with the wedge blocks is formed on the bottom of the sleeve.

[0012] In one embodiment, the sleeve is slidably connected to the open end; a sealant is provided between the sleeve and the open end; or, the sleeve is sleeved on the open end and sealed by welding.

[0013] In one embodiment, the outer diameter of the sleeve is equal to the outer diameter of the first barrel section.

[0014] In one embodiment, the main body includes a second internal thread, which is at least partially arranged on the inner circumferential wall of the first barrel section and extends toward the second barrel section; and / or a plurality of grooves are formed on the outer circumferential wall of the first barrel section.

[0015] In one embodiment, the battery device includes a battery cell; the battery cell is accommodated in the box; the first plate is the bottom plate of the box, the second plate is the bottom guard plate, and the first plate covers a portion of the surface of the second plate.

[0016] In one embodiment, the battery device includes a third plate; the third plate abuts against the first plate and covers a portion of the surface of the first plate; the rivet nut is passed through and fixedly connected to the first plate and the third plate.

[0017] In one of the embodiments, the surfaces of the rivet nut and the sleeve are both provided with an electroplating layer.

[0018] In one of the embodiments, along the axial direction of the rivet nut, the length of the rivet nut is not less than twice the length of the sleeve.

[0019] A second aspect of the present application provides a connection structure, which is applied to the above-mentioned battery device, and the connection structure includes a rivet nut and a sleeve; the end of the rivet nut is formed with an open end, and the sleeve is sleeved on the open end.

[0020] A third aspect of the present application provides an electrical device, comprising the above-mentioned battery device, wherein the battery device is used to provide electrical energy.

[0021] The beneficial effect is that: the battery device of the embodiment of the present application forms an open end at the end of the rivet nut, which facilitates the rivet nut to be completely immersed in the electroplating solution, thereby ensuring that the electroplating layer can evenly and firmly cover the outer surface of the rivet nut and the inner surface that is not easily contacted with the outside, thereby ensuring that the rivet nut has good corrosion resistance, and the rivet nut has stable functions and a good lifespan; the sleeve can be sealed on the open end to close the open end, thereby achieving sealing and ensuring a stable connection between the first plate and the other plates.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, 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 present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0024] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0025] Figure 3 A schematic diagram of the structure of a battery module provided in some embodiments of the present application.

[0026] Figure 4 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0027] Figure 5 A schematic diagram of the assembly structure of a first plate, a rivet nut and a sleeve provided in some embodiments of the present application; wherein the main body of the rivet nut is in a deformed state.

[0028] Figure 6 A schematic structural diagram of a rivet nut provided in some embodiments of the present application; wherein the main body of the rivet nut is not in a deformed state.

[0029] Figure 7 A schematic diagram of the structure of a sleeve provided in some embodiments of the present application.

[0030] Figure 8 A schematic diagram of the assembly structure of a first plate body, a rivet nut, a sleeve, a second plate body and a screw provided in some embodiments of the present application; wherein the direction of the arrow represents the installation direction of the screw.

[0031] Fig. 9 A schematic diagram of the structure of a screw provided in some embodiments of the present application.

[0032] Fig.10 A schematic diagram of the assembly structure of a first plate body, a third plate body, a rivet nut, a sleeve, a second plate body and a screw provided in some embodiments of the present application; wherein the direction of the arrow represents the installation direction of the screw.

[0033] Description of reference numerals:

[0034] Vehicles - 1000;

[0035] Battery device 100, box 110, upper cover 111, box body 112, battery module 120, battery cell 121, end cover 122, housing 123, electrode assembly 124, electrode terminal 125, controller 200, motor 300;

[0036] The first plate body -10, the second plate body -20, the rivet nut -30, the step portion -31, the main body -32, the protrusion -321, the first barrel section -322, the groove -3221, the second barrel section -323, the first external thread -324, the second internal thread -325, the open end -33, the sleeve -40, the first internal thread -41, the boss -42, the screw -50, the rod body -51, the rod head -52, the wedge block -53, the second external thread -54, the third plate body -60, and the fourth plate body -70. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application 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 present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application 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 application, if the technical terms "first", "second", etc. appear, these terms are only used for descriptive purposes 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.

[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 application. 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 application, 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 application, if the term "multiple" appears, "multiple" means at least two (including two), such as two, three, etc., unless otherwise clearly and specifically defined. Similarly, if the term "multiple groups" appears, "multiple groups" refers to more than two groups (including two groups), and if the term "multiple sheets" appears, "multiple sheets" refers to more than two sheets (including two sheets).

[0043] In the description of the embodiments of the present application, if the 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does 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 application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if the technical terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0047] At present, from the perspective of market development, the application of power battery devices is becoming more and more extensive. Power battery devices 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 the application field of power battery devices, the market demand is also constantly expanding.

[0048] In the related art, there are multiple plate structure connections in the box of the battery device, and adjacent plates are connected by rivet nuts and screws to provide threaded connection and sealing. The battery device is used in a harsh environment, and the rivet nuts are susceptible to corrosion. Therefore, the rivet nuts need to be electroplated to improve their corrosion resistance. However, since rivet nuts are often blind hole structures, electroplating in the inner hole is difficult, resulting in very limited electroplating effects. Rivet nuts are still susceptible to corrosion, resulting in connection failure and posing a safety hazard.

[0049] In order to alleviate the problem of connection failure, an open end can be set for the rivet nut in the design, so as to improve the electroplating effect and make the electroplating layer stable, thereby ensuring that the rivet nut has good corrosion resistance, making the rivet nut connection function stable and having a good life.

[0050] The embodiments of the present application provide a battery device, a connection structure, and an electric device, which may 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, an energy storage product, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc., and the energy storage product may include an energy storage station, etc.

[0051] It should be understood that the technical solutions generally described in the embodiments of the present application are not limited to the battery devices and power-consuming devices described above, but can also be applied to all battery devices including a box and power-consuming devices using the battery devices. However, for the sake of simplicity of description, an power-consuming device in an embodiment of the present application is taken as an example of vehicle 1000.

[0052] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0053] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0054] Figure 2 An exploded view of a battery device 100 provided in some embodiments of the present application; Figure 3 This is a schematic diagram of the structure of the battery module provided in some embodiments of the present application. Figure 2 and Figure 3In order to meet different power requirements, the battery device 100 may include a plurality of battery cells 121 and a housing 110. The battery cell 121 refers to the smallest unit constituting the battery module 120 or the battery pack. The plurality of battery cells 121 may be connected in series and / or in parallel via electrode terminals for various applications. The housing 110 is used to accommodate the battery cells 121 or the battery module 120 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 121.

[0055] The box body 110 can adopt a variety of structures. In some embodiments, the box body 110 can include an upper cover 111 and a box body 112, the upper cover 111 and the box body 112 cover each other, and the upper cover 111 and the box body 112 jointly define a storage space for accommodating the battery cell 121. The box body 112 can be a hollow structure with one end open, and the upper cover 111 can be a plate-like structure, and the upper cover 111 covers the open side of the box body 112, so that the upper cover 111 and the box body 112 jointly define a storage space; the upper cover 111 and the box body 112 can also be hollow structures with one side open, and the open side of the upper cover 111 covers the open side of the box body 112. Of course, the box body 110 formed by the upper cover 111 and the box body 112 can be in a variety of shapes, such as a simple three-dimensional structure such as a single cuboid or a cylinder or a sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as a cuboid or a cylinder or a sphere, and the embodiments of the present application are not limited to this. The material of the box body 110 can be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, etc., or a composite material such as glass fiber and epoxy resin, and the implementation mode of the present application is not limited to this.

[0056] In the embodiment of the present application, multiple battery cells 121 can directly form a battery pack, or they can first form a battery module 120, and then the battery module 120 can form a battery pack. Specifically, multiple battery cells 121 can be directly connected in series, parallel or mixed together to form a whole, and then the whole formed by multiple battery cells 121 is accommodated in the box 110. Alternatively, multiple battery cells 121 can first be connected in series, parallel or mixed together to form a battery module 120, and then multiple battery modules 120 can be connected in series, parallel or mixed together to form a whole, and then accommodated in the box 110.

[0057] The battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar component for achieving electrical connection between the plurality of battery cells 121 .

[0058] Each battery cell 121 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 it is not limited thereto. The battery cell 121 can be cylindrical, flat, rectangular or other shapes. The battery cell 121 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the implementation method of the present application is not limited to this. However, for the sake of simplicity, the following embodiments are all described by taking the square lithium-ion battery cell 121 as an example.

[0059] Please refer to Figure 4 , Figure 4 The schematic diagram of the exploded structure of the battery cell 121 provided in some embodiments of the present application. The battery cell 121 includes an end cap 122, a housing 123, an electrode assembly 124 and other functional components.

[0060] The end cap 122 refers to a component that covers the opening of the shell 123 to isolate the internal environment of the electrode assembly 124 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the shell 123 to match the shell 123. Optionally, the end cap 122 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 122 is not easily deformed when it is squeezed and collided, so that the battery cell 121 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 125 can be provided on the end cap 122. The electrode terminal 125 can be used to electrically connect to the electrode assembly 124 for outputting or inputting electrical energy of the battery cell 121. In some embodiments, the end cap 122 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 121 reaches a threshold. The material of the end cap 122 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 122 to isolate the electrical connection components in the housing 123 from the end cap 122 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0061] The shell 123 is a component used to cooperate with the end cap 122 to form the internal environment of the battery cell 121, wherein the formed internal environment can be used to accommodate the electrode assembly 124, the electrolyte and other components. The shell 123 and the end cap 122 can be independent components, and an opening can be set on the shell 123, and the internal environment of the battery cell 121 is formed by covering the opening with the end cap 122 at the opening. Without limitation, the end cap 122 and the shell 123 can also be integrated. Specifically, the end cap 122 and the shell 123 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 123, the end cap 122 covers the shell 123. The shell 123 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 123 can be determined according to the specific shape and size of the electrode assembly 124. The shell 123 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0062] The electrode assembly 124 is a component in the battery cell 121 where an electrochemical reaction occurs. One or more electrode assemblies 124 may be contained in the housing 123. The electrode assembly 124 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 124, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear (not shown). The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device, the positive active material and the negative active material react with the electrolyte, and the pole ear connects the electrode terminal 125 to form a current loop.

[0063] See also Figures 1 to 7 As shown, Figure 5 A schematic diagram of the assembly structure of a first plate, a rivet nut and a sleeve provided in some embodiments of the present application. Figure 6 A schematic diagram of the structure of a rivet nut provided in some embodiments of the present application. Figure 7 A schematic diagram of the structure of a sleeve provided in some embodiments of the present application.

[0064] The first aspect of the present application provides a battery device 100, comprising: a box 110, a rivet nut 30 and a sleeve 40. The box 110 comprises a first plate 10; the rivet nut 30 penetrates the first plate 10 and is fixedly connected to the first plate 10; the end of the rivet nut 30 is formed with an open end 33, along the axial direction of the rivet nut 30, one end of the sleeve 40 is sleeved on the open end 33, and the other end of the sleeve 40 is a closed end.

[0065] The first plate 10 is penetrated by the rivet nut 30, so that it can be used to connect the first plate 10 with other parts in the battery device 100. For example, the first plate 10 as the plate of the box 110 can be used to connect the bottom plate on the box 110, and can also be used to connect the bottom guard plate, water cooling plate and other structures; the specific design shall prevail. An open end 33 is formed at the end of the rivet nut 30; in this way, it is convenient for the rivet nut 30 to be completely immersed in the electroplating solution, thereby ensuring that the electroplating layer can be evenly and firmly covered on the outer surface of the rivet nut 30 and the inner surface that is not easy to contact with the outside, thereby ensuring that the rivet nut 30 has good corrosion resistance, so that the rivet nut 30 has stable functions and a good life; the sleeve 40 can be sealed on the open end 33 to close the open end 33, thereby achieving sealing and ensuring the stable connection between the first plate 10 and other plates.

[0066] Optionally, the sleeve 40 may be made of carbon steel, stainless steel or aluminum alloy.

[0067] Optionally, the surfaces of the sleeve 40 and the rivet nut 30 are both provided with an electroplating layer, and the electroplating layer material may be one or more of chromium, copper, and nickel-chromium alloy. Before the sleeve 40 and the rivet nut 30 are assembled, the two may be electroplated separately to ensure that the electroplating layer stably and firmly covers the inner and outer surfaces of the sleeve 40 and the rivet nut 30.

[0068] In some possible embodiments, see Figures 1 to 7 As shown, along the axis direction of the rivet nut 30, the length of the rivet nut 30 is not less than twice the length of the sleeve 40. In this way, the rivet nut 30 and the sleeve 40 can be conveniently electroplated. Specifically, the longer rivet nut 30 is completely immersed in the electroplating solution, and the open end 33 can ensure that the electroplating layer can be evenly and firmly covered on the outer surface of the rivet nut 30 and the inner surface that is not easy to contact with the outside. At the same time, the shorter sleeve 4 is immersed in the electroplating solution due to its shallow depth, which can ensure that the electroplating layer can be evenly and firmly covered on the outer surface of the sleeve 4 and the inner surface that is not easy to contact with the outside, thereby ensuring that the rivet nut 30 and the sleeve 4 have good corrosion resistance, so that the rivet nut 30 and the sleeve 4 have stable functions and good life; and then the sleeve 40 can be sealed on the open end 33 to close the open end 33, thereby achieving sealing and ensuring the stable connection between the first plate 10 and the other plates.

[0069] In some possible embodiments, see Figures 1 to 7As shown, the rivet nut 30 includes a step portion 31 and a main body portion 32. The main body portion 32 is through and has an open end 33 formed at the end. The step portion 31 is arranged at the top end of the main body portion 32. The main body portion 32 is penetrated through the first plate body 10, and part of the outer surface of the main body portion 32 is deformed to form a protrusion 321. The first plate body 10 is clamped between the step portion 31 and the protrusion 321.

[0070] The main body 32 can be a carbon steel riveted tube, a stainless steel riveted tube, an aluminum alloy riveted tube or a copper alloy riveted tube, and the step portion 34 can be a carbon steel flange surface, a stainless steel flange surface, an aluminum alloy flange surface or a copper alloy flange surface. The step portion 31 is integrally arranged at the top of the main body 32, and the step portion 31 is attached to the first plate 10. The main body 32 passes through the first plate 10, and is combined with Figure 5 and Figure 6 The main body 32 is pulled upward in the vertical direction under the action of external force, and the tube wall of the main body 32 is subjected to an upward extrusion force, and finally the tube wall of the main body 32 expands outward to form a protrusion 321. The protrusion 321 and the step portion 34 of the main body 32 serve as axial limiters and are distributed on both sides of the first plate body 10 to avoid relative displacement between the first plate body 10 and the rivet nut 30, so that the connection quality is more stable.

[0071] In some possible embodiments, see Figures 1 to 7 As shown, the main body 32 includes a first barrel section 322 and a second barrel section 323 which are integrally connected. The step portion 31 is arranged at the top of the first barrel section 322 away from the second barrel section 323. The first barrel section 322 can be deformed to form a protrusion 321; the bottom end of the second barrel section 323 away from the first barrel section 322 is formed as an open end 33.

[0072] The sleeve 40 is sealed on the second barrel section 323 to close the open end 33, thereby ensuring a stable connection between the first plate 10 and other plates.

[0073] Optionally, the outer diameter of the first barrel section 322 is greater than the outer diameter of the second barrel section 323 , and the inner diameter of the first barrel section 322 is equal to the inner diameter of the second barrel section 323 .

[0074] In some possible embodiments, see Figures 1 to 7 As shown, the outer peripheral wall of the second barrel section 323 is formed with a first external thread 324 , and the inner wall of the sleeve 40 is formed with a first internal thread 41 matching with the first external thread 324 .

[0075] In this way, the sleeve 40 and the second barrel section 323 are connected by threads, which facilitates the sealing sleeve 40 to be set on the second barrel section 323, and the first external thread 324 and the first internal thread 41 are screwed together to close the open end 33, thereby achieving the effect of connection and sealing, ensuring the stability of the connection between the first plate 10 and other plates.

[0076] In the embodiment of the present application, the first external thread 324 and the first internal thread 41 can adopt a thread diameter of 0.6, which has both good connection strength and sufficient sealing performance.

[0077] In some possible embodiments, see Figures 1 to 7 As shown, a sealant (not shown) is provided between the sleeve 40 and the open end 33 .

[0078] The sleeve 40 is threadedly connected to the second barrel section 323, which facilitates the sealing sleeve 40 to be installed on the second barrel section 323. The first external thread 324 and the first internal thread 41 are screwed together with the sealant to seal the open end 33, so that the sealing effect is better and the connection between the first plate 10 and other plates is effectively ensured to be stable.

[0079] The sealant can be polyvinyl acetate, polyurethane resin, etc.

[0080] Figure 8 A schematic diagram of the assembly structure of a first plate body, a rivet nut, a sleeve, a second plate body and a screw provided in some embodiments of the present application. Fig. 9 A schematic diagram of the structure of a screw provided in some embodiments of the present application.

[0081] In some possible embodiments, see Figures 1 to 9 As shown, the battery device 100 includes a second plate body 20 and a screw rod 50; the screw rod 50 includes a rod body 51 and a rod head 52 formed on the rod body 51, the rod body 51 passes through the second plate body 20 and is screwed with the rivet nut 30, and the second plate body 20 is clamped between the rod head 52 and the rivet nut 30.

[0082] The rivet nut 30 passes through and fixes the first plate body 10 , the rod body 51 passes through the second plate body 20 and is screwed with the main body 32 of the rivet nut 30 ; the second plate body 20 is clamped between the rod head 52 and the step portion 31 , thereby connecting the first plate body 10 and the second plate body 20 .

[0083] It is understandable that the number of the second plate bodies 20 can be one or more, one or more rivet nuts 30 can be provided on each first plate body 10, and the screw rods 50 on the second plate body 20 are assembled and fixed with the rivet nuts in a one-to-one correspondence.

[0084] In some possible embodiments, see Figures 1 to 9As shown, the main body 32 includes a second internal thread 325, which is at least partially disposed on the inner circumferential wall of the first barrel section 322 and extends toward the second barrel section 323. The rod body 51 is provided with a second external thread 54 that matches the second internal thread 325; after the rod body 51 passes through the second plate body 20, the second internal thread 325 and the second external thread 54 are engaged to realize the axial connection between the rod body 51 and the rivet nut 30.

[0085] In some possible embodiments, see Figures 1 to 9 As shown, the sleeve 40 is threadedly connected to the open end 33 ; the rod body 51 can drive the sleeve 40 to rotate around the open end 33 to adjust the overall length of the sleeve 40 and the rivet nut 30 .

[0086] The sleeve 40 is connected to the open end 33 of the second barrel section 323 by threaded connection. If the sleeve 40 is rotated in one direction (defined as the positive direction for ease of understanding), the sleeve 40 is screwed in relative to the second barrel section 323, and the overall length of the sleeve 40 and the rivet nut 30 is shortened. If the sleeve 40 is rotated in the other direction (defined as the reverse direction for ease of understanding), the sleeve 40 is loosened relative to the second barrel section 323, and the overall length of the sleeve 40 and the rivet nut 30 is lengthened. In this way, by rotating the sleeve 40 in the positive direction or the reverse direction, the overall length of the sleeve 40 and the rivet nut 30 can be flexibly shortened or lengthened, so that the rivet nut 30 can be adapted to screws 50 of more sizes and operating spaces of more sizes, and the connection between the first plate body 10 and the second plate body 20 is ensured to be stable.

[0087] Specifically, combined Figure 8When there is a fourth plate body 70 below the first plate body 10, the space between the two is the operating space. The existence of the operating space limits the overall length of the sleeve 40 and the rivet nut 30. When the overall length of the sleeve 40 and the rivet nut 30 is too long, the sleeve 40 can be rotated in the positive direction in advance to reduce the overall length of the sleeve 40 and the rivet nut 30, so that the sleeve 40 and the rivet nut 30 can be accommodated in the operating space. The main body 32 is pulled upward in the vertical direction under the action of external force, and the tube wall of the first barrel section 322 is caused to be subjected to an upward extrusion force. Finally, the tube wall of the first barrel section 322 expands outward to produce a protrusion 321. The protrusion 321 and the step portion 34 are respectively used as axial limiters and are distributed on both sides of the first plate body 10 to avoid relative displacement between the first plate body 10 and the rivet nut 30, so that the connection quality is more stable. After the first barrel section 322 is deformed, its overall length is shortened compared to before deformation, resulting in the rivet nut 30. The length of the nut 30 is shortened, thereby shortening the overall length of the sleeve 40 and the rivet nut 30, and a gap is generated between the bottom of the sleeve 40 and the fourth plate 70. The rod 51 passes through the second plate 20 and is screwed with the main body 32 of the rivet nut 30; the second plate 20 is clamped between the rod head 52 and the step portion 31; the rod 51 passes through the second plate 20 and is screwed with the rivet nut 30; the rod 51 passes through the end of the rivet nut 30 and can drive the sleeve 40 to rotate in the opposite direction around the open end 33 to increase the overall length of the sleeve 40 and the rivet nut 30, and finally makes the bottom of the sleeve 40 conflict with the fourth plate 70, thereby effectively adjusting the tolerance gap between the parts, preventing the rivet nut 30 and the sleeve 40 from loosening, and finally effectively improving the connection strength and stability.

[0088] In some possible embodiments, the end of the rod body 51 passing through the rivet nut 30 can be circumferentially limited with the sleeve 40 to drive the sleeve 40 to rotate.

[0089] See also Figures 1 to 9 As shown, the screw rod 50 includes a plurality of wedge blocks 53 , which are arranged on the end surface of the rod body 51 passing through the rivet nut 30 ; a boss 42 matching with the wedge blocks 53 is formed at the bottom of the sleeve 40 .

[0090] In this way, by setting a wedge block 53 on the end surface of the rod body 51, as the rod body 51 rotates around its own axis, it extends into the bottom of the sleeve 40 until the wedge block 53 and the boss 42 are circumferentially in conflict, and the sleeve 40 and the rod body 51 rotate together, and the sleeve 40 rotates in the opposite direction around the open end 33 to increase the overall length of the sleeve 40 and the rivet nut 30, so that the rod body 51 can finally drive the sleeve 40 to rotate in a square or opposite direction, thereby effectively adjusting the tolerance gap between the parts, preventing the rivet nut 30 and the sleeve 40 from loosening, and enabling the rivet nut 30 to adapt to screws 50 of more sizes and operating spaces of more sizes, ensuring the stable connection between the first plate body 10 and the second plate body 20, and finally effectively improving the connection strength and stability.

[0091] Optionally, a sealant is provided between the sleeve 40 and the open end 33. During the process of the sleeve 40 being driven to rotate by the rod body 51 of the screw 50, the sealant has not yet solidified. After the rod body 51 of the screw 50 drives the sleeve 40 to rotate in a square or reverse direction, thereby effectively adjusting the tolerance gap between the various parts, the sealant remains stationary to ensure that the sealant solidifies and achieves sealing.

[0092] In some possible embodiments, the sleeve 40 is slidably connected to the open end 33 ; and a sealant is disposed between the sleeve 40 and the open end 33 .

[0093] Specifically, the sleeve 40 and the open end 33 of the second barrel section 323 are slidably connected, so that the sleeve 40 is sealed on the second barrel section 323 and filled with sealant between the two, so as to achieve better sealing effect and effectively ensure the stable connection between the first plate 10 and other plates.

[0094] The sealant can be polyvinyl acetate, polyurethane resin, etc.

[0095] In some possible embodiments, the sleeve 40 is sleeved on the open end 33 and sealed by welding, which not only has good connection strength but also ensures good sealing between the sleeve 40 and the open end 33 of the second barrel section 323, and can effectively ensure the stable connection between the first plate 10 and other plates.

[0096] In some possible embodiments, see Figures 1 to 9 As shown, the outer diameter of the sleeve 40 is equal to the outer diameter of the first barrel section 322. In this way, it can be ensured that the through hole on the first plate 10 can pass through the first barrel section 322 and the sleeve 40 at the same time, which is convenient for operation connection.

[0097] In some possible embodiments, see Figures 1 to 9As shown, a plurality of grooves 3221 are formed on the outer peripheral wall of the first barrel section 322. The grooves 3221 can effectively reduce the average wall thickness of the first barrel section 322, so that when the first barrel section 322 is subjected to external force, the tube wall of the first barrel section 322 expands outward to form the protrusion 321.

[0098] In the embodiment of the present application, the groove 3221 is in the shape of an elongated strip and extends in the vertical direction; a plurality of spaced grooves 3221 are arranged on the outer peripheral side wall of the first barrel section 322, the groove width of the groove 3221 is 0.5mm-1mm, the groove depth is 0.2mm-0.5mm, and the intervals between each other are 0.5mm-1mm.

[0099] In some possible embodiments, see Figures 1 to 9 As shown, the battery includes a battery cell 121 ; the battery cell 121 is accommodated in a box body 110 ; the first plate body 10 is the bottom plate of the box body 110 , the second plate body 20 is the bottom guard plate, and the first plate body 10 covers a portion of the surface of the second plate body 20 .

[0100] The box body 110 has a storage space, and the battery cell 121 is stored in the storage space of the box body 110. Specifically, the rivet nut 30 passes through the bottom plate of the box body 110, and the rivet nut 30 is raised by the external force. The two sides of the bottom plate of the box body 110 are respectively used as axial limiters by the protrusions 321 of the main body 32 and the step portion 34, so as to realize the positioning of the rivet nut 30 and the bottom plate of the box body 110. The rod body 51 of the screw rod 50 passes through the second plate body 20 and is screwed with the main body 32 of the rivet nut 30; the bottom guard plate is clamped between the rod head 52 and the step portion 31, so that the bottom guard plate covers the bottom plate of the box body 110 to provide protection.

[0101] In some other embodiments, the first plate body 10 is a plate body on the upper cover 111 of the box body 110, and the second plate body 20 is a plate body on the box body 112 of the box body 110. The upper cover 111 and the box body 112 are connected and fixed by rivet nuts 30 and screws 50. The specific connection method is similar to that of the previous embodiment and will not be repeated here.

[0102] Fig.10 A schematic diagram of the assembly structure of a first plate body, a third plate body, a rivet nut, a sleeve, a second plate body, and a screw provided in some embodiments of the present application;

[0103] See also Figures 1 to 10 As shown, the battery device 100 includes a third plate 60 ; the third plate 60 abuts against the first plate 10 and covers a portion of the surface of the first plate 10 ; the rivet nut 30 is passed through and fixedly connected to the first plate 10 and the third plate 60 .

[0104] The first plate 10 and the third plate 60 are sandwiched between the step portion 31 and the protrusion 321 .

[0105] Specifically, combined Figure 6 and Fig.10 The main body 32 of the rivet nut 30 passes through the first plate 10 and the third plate 60; the main body 32 is pulled upward in the vertical direction under the action of external force, and causes the tube wall of the main body 32 to be subjected to an upward extrusion force, and finally the tube wall of the main body 32 expands and bulges outward to generate a protrusion 321. The protrusion 321 and the step portion 34 of the main body 32 serve as axial limiters and are distributed on both sides of the first plate 10 and the third plate 60, respectively, to avoid relative displacement between the first plate 10, the third plate 60 and the rivet nut 30, so as to make the connection quality more stable.

[0106] In the embodiment of the present application, the first plate body 10 is a water cooling plate, the third plate body 60 is the bottom plate of the box body 110 , the second plate body 20 is a bottom protective plate, and the first plate body 10 covers part of the surface of the second plate body 20 .

[0107] A second aspect of the present application provides a connection structure, which is applied to the battery device 100 .

[0108] See also Figures 1 to 10 As shown, the connection structure includes a rivet nut 30 and a sleeve 40 ; wherein an open end 33 is formed at the end of the rivet nut 30 , and the sleeve 40 is sleeved on the open end 33 .

[0109] By forming an open end 33 at the end of the rivet nut 30, the rivet nut 30 can be completely immersed in the electroplating solution, thereby ensuring that the electroplating layer can evenly and firmly cover the outer surface of the rivet nut 30 and the inner surface that is not easily contacted by the outside, thereby ensuring that the rivet nut 30 has good corrosion resistance, and the rivet nut 30 has stable functions and a good lifespan; the sleeve 40 can be sealed on the open end 33 to close the open end 33, thereby achieving sealing and connection.

[0110] A third aspect of the present application provides an electrical device, comprising the above-mentioned battery device 100; the battery device 100 is used to provide electrical energy to the electrical device.

[0111] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A box body (110), wherein the box body (110) comprises a first plate body (10); a rivet nut (30) passing through the first plate body (10) and fixedly connected to the first plate body (10); an open end (33) is formed at the end of the rivet nut (30); and a sleeve (40), one end of the sleeve (40) being sleeved on the open end (33) along the axial direction of the rivet nut (30), and the other end of the sleeve (40) being a closed end; The battery device comprises a second plate body (20) and a screw rod (50); The screw rod (50) comprises a rod body (51) and a rod head (52) formed on the rod body (51); the rod body (51) passes through the second plate body (20) and is threadedly engaged with the rivet nut (30); the second plate body (20) is sandwiched between the rod head (52) and the rivet nut (30).

2. The battery device according to claim 1, characterized in that: The rivet nut (30) comprises a step portion (31) and a main body portion (32); the main body portion (32) is through-through and has the open end (33) formed at the end; the step portion (31) is arranged at the top end of the main body portion (32); the main body portion (32) is inserted into the first plate body (10), and a portion of the outer surface of the main body portion (32) is deformed to form a protrusion (321); the first plate body (10) is sandwiched between the step portion (31) and the protrusion (321).

3. The battery device according to claim 2, characterized in that: The main body (32) comprises a first barrel section (322) and a second barrel section (323) which are integrally connected, the step section (31) being arranged at a top end of the first barrel section (322) away from the second barrel section (323), the first barrel section (322) being deformable to form the protrusion (321); and a bottom end of the second barrel section (323) away from the first barrel section (322) is formed as the open end (33).

4. The battery device according to claim 3, characterized in that: The outer peripheral wall of the second barrel section (323) is formed with a first external thread (324), and the inner wall of the sleeve (40) is formed with a first internal thread (41) that matches the first external thread (324).

5. The battery device according to any one of claims 1 to 4, characterized in that: A sealant is provided between the sleeve (40) and the open end (33).

6. The battery device according to claim 1, characterized in that: The sleeve (40) is threadedly connected to the open end (33); The rod body (51) can drive the sleeve (40) to rotate around the open end (33) to adjust the overall length of the sleeve (40) and the rivet nut (30).

7. The battery device according to claim 6, characterized in that: The screw rod (50) comprises a plurality of wedge blocks (53), and the wedge blocks (53) are arranged on the end surface of the rod body (51) passing through the rivet nut (30); The bottom of the sleeve (40) is formed with a boss (42) that matches the wedge block (53).

8. The battery device according to claim 3, characterized in that: The sleeve (40) is slidably connected to the open end (33); a sealant is provided between the sleeve (40) and the open end (33); Alternatively, the sleeve (40) is sleeved on the open end (33) and sealed by welding.

9. The battery device according to claim 3, characterized in that: The outer diameter of the sleeve (40) is equal to the outer diameter of the first barrel section (322).

10. The battery device according to claim 3, characterized in that: The main body (32) comprises a second internal thread (325), wherein the second internal thread (325) is at least partially disposed on the inner circumferential wall of the first barrel section (322) and extends toward the second barrel section (323); And / or, a plurality of grooves (3221) are formed on the outer peripheral wall of the first barrel section (322).

11. The battery device according to claim 1, characterized in that: The battery device comprises a battery cell (121); The battery cell (121) is accommodated in the box (110); The first plate body (10) is a bottom plate of the box body (110), the second plate body (20) is a bottom protective plate, and the first plate body (10) covers a portion of the surface of the second plate body (20).

12. The battery device according to any one of claims 1 to 4, characterized in that: The battery device comprises a third plate (60); The third plate (60) abuts against the first plate (10) and covers a portion of the surface of the first plate (10); The rivet nut (30) is passed through and fixedly connected to the first plate body (10) and the third plate body (60).

13. The battery device according to any one of claims 1 to 4, characterized in that: The surfaces of the rivet nut (30) and the sleeve (40) are both provided with an electroplating layer.

14. The battery device according to any one of claims 1 to 4, characterized in that: Along the axial direction of the rivet nut (30), the length of the rivet nut (30) is not less than twice the length of the sleeve (40).

15. A connection structure, applied to the battery device according to any one of claims 1 to 14, characterized in that: The connection structure comprises a rivet nut (30) and a sleeve (40); An open end (33) is formed at the end of the rivet nut (30), and the sleeve (40) is sleeved on the open end (33).

16. An electrical device, characterized in that: The battery device comprises a battery device as claimed in any one of claims 1 to 15, wherein the battery device is used to provide electrical energy.

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