Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer; the box body is used for accommodating the battery monomers, the box body comprises a mounting beam, and a first through hole is formed in the mounting beam; at least part of the hanging sleeve is located in the first through hole; the clamping sleeve is connected to the hanging sleeve in a sleeving mode and connected with the periphery of the first through hole in a clamping mode. The assembly efficiency can be improved.

Description

Technical Field

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

[0002] With the rapid development of new energy technologies, battery devices have been widely used in electronic equipment, electric vehicles, electric two-wheeled vehicles, power tools, etc. As the application of battery devices becomes more and more extensive, higher requirements are placed on the assembly efficiency of battery devices. Utility Model Content

[0003] The embodiments of the present application provide a battery device and an electrical device to improve the assembly efficiency of the battery device.

[0004] In a first aspect, an embodiment of the present application provides a battery device, comprising: a battery cell; a box body for accommodating the battery cell, the box body comprising a mounting beam, the mounting beam being provided with a first through hole; a mounting sleeve, at least partially located in the first through hole; a clamping sleeve, sleeved on the mounting sleeve and clamped with the periphery of the first through hole.

[0005] The mounting sleeve is sleeved on the mounting sleeve, and the mounting sleeve is clamped with the periphery of the first through hole, so that the mounting sleeve is quickly installed and fixed to the first through hole through the mounting sleeve, thereby improving assembly efficiency.

[0006] In some embodiments, the ferrule includes a ferrule body and a plurality of elastic claws, the ferrule body is annular, and the plurality of elastic claws are arranged at intervals along the circumference of the ferrule body, one end of each of the elastic claws is connected to the ferrule body, and the other end is a free end; the elastic claws are engaged with the periphery of the first through hole.

[0007] By arranging a plurality of elastic claws at circumferential intervals along the ferrule body, the plurality of elastic claws can be gathered together or spread apart. The plurality of elastic claws are gathered together so as to smoothly enter the first through hole. During the process of inserting the mounting sleeve into the first through hole, the mounting sleeve moves relative to the ferrule to spread the plurality of elastic claws apart so as to engage with the periphery of the first through hole. Thus, the mounting sleeve can be quickly installed and fixed to the first through hole, thereby improving assembly efficiency.

[0008] In some embodiments, the mounting beam includes a first wall having a first surface and a second surface oppositely arranged along its thickness direction, and the first through hole passes through the first surface and the second surface; the ferrule body abuts against the first surface, and the elastic claw passes through the first through hole and abuts against the second surface.

[0009] During the process of inserting the mounting sleeve into the first through hole, it can move smoothly relative to the clamping sleeve to open the multiple elastic claws so that the multiple elastic claws can be engaged with the periphery of the first through hole, thereby improving assembly efficiency and assembly reliability.

[0010] In some embodiments, a first groove is provided on the outer circumferential surface of the mounting sleeve, and the first groove has a first groove bottom surface; in the assembled state, the ferrule is at least partially accommodated in the first groove, and the elastic claw is in contact with the first groove bottom surface.

[0011] In the assembled state, the sleeve is at least partially accommodated in the first groove to restrict the elastic claw in the first groove. The elastic claw fits against the bottom surface of the first groove so that the bottom surface of the first groove stretches out multiple elastic claws to engage with the periphery of the first through hole. This can prevent the mounting sleeve from falling out of the first through hole, thereby improving installation reliability.

[0012] In some embodiments, along the axial direction of the mounting sleeve, the first groove has a first groove side surface and a second groove side surface that are oppositely arranged, the ferrule body abuts against the first groove side surface, and the elastic claw abuts against the second groove side surface.

[0013] The ferrule body abuts against the side of the first groove, and the elastic claw abuts against the side of the second groove, so that the ferrule is restricted in the first groove. In other words, through the cooperation between the first groove and the ferrule, the axial displacement of the mounting sleeve in both positive and negative directions in the first through hole can be prevented, further improving the assembly reliability.

[0014] In some embodiments, the mounting sleeve includes a sleeve body and a flange portion disposed at one end of the sleeve body, the flange portion has a third surface close to the sleeve body, and the third surface is coplanar with the side surface of the first groove.

[0015] Since the third surface and the side surface of the first groove are coplanar, in the assembled state, the flange portion abuts against the ferrule body, and since the ferrule body abuts against the mounting beam, the mounting beam, the ferrule body and the flange portion fit tightly together, thereby improving the mounting strength.

[0016] In some embodiments, a second groove is further provided on the outer circumferential surface of the mounting sleeve, and the second groove and the first groove are arranged along the axial direction of the mounting sleeve; the second groove has a second groove bottom surface, and the second groove bottom surface is inclined relative to the central axis of the mounting sleeve so that the depth of the second groove gradually decreases along the direction from the second groove to the first groove; in the pre-assembly state, the ferrule is at least partially accommodated in the second groove, and the elastic claw is in contact with the second groove bottom surface.

[0017] Therefore, by pre-sleeving the sleeve on the mounting sleeve, the elastic claw of the sleeve fits with the bottom surface of the second groove, so that during the installation process, the mounting sleeve and the sleeve can be directly inserted into the first through hole together, which can achieve quick installation and improve assembly efficiency.

[0018] In some embodiments, the maximum depth of the second groove is greater than the maximum depth of the first groove.

[0019] Since the maximum depth of the second groove is greater than the maximum depth of the first groove, the multiple elastic claws are retracted to a greater extent in the second groove than in the first groove. As a result, the multiple elastic claws can enter the first through hole and engage with the periphery of the first through hole.

[0020] In some embodiments, the bottom surface of the first groove is inclined relative to the central axis of the mounting sleeve so that the depth of the first groove gradually decreases along the direction from the second groove to the first groove; the inclination angle of the bottom surface of the second groove relative to the central axis of the mounting sleeve is greater than the inclination angle of the bottom surface of the first groove relative to the central axis of the mounting sleeve.

[0021] Since the inclination angle of the bottom surface of the second groove relative to the central axis of the mounting sleeve is greater than the inclination angle of the bottom surface of the first groove relative to the central axis of the mounting sleeve, the range of contraction of the multiple elastic claws with the bottom surface of the second groove when they are in contact with each other is greater than the range of contraction with the bottom surface of the first groove, so that the multiple elastic claws can enter the first through hole while also being able to engage with the periphery of the first through hole.

[0022] In some embodiments, the second groove also includes a third groove side surface, the second groove bottom surface is connected to the third groove side surface at one end away from the first groove, and the second groove bottom surface is directly connected to the outer peripheral surface of the mounting sleeve at one end close to the first groove.

[0023] Therefore, in the pre-assembly state, the ferrule body can be sleeved on the outer circumferential surface of the mounting sleeve, the elastic claw is in contact with the bottom surface of the second groove, and the side surface of the third groove can block the elastic claw to prevent the ferrule from escaping from the mounting sleeve, thereby improving the reliability in the pre-assembly state.

[0024] In some embodiments, the elastic claw is in contact with the bottom surface of the second groove in a free state.

[0025] Thus, when the ferrule is in the pre-assembled state of being sleeved on the mounting sleeve, the elastic claw can smoothly enter the first through hole.

[0026] In some embodiments, both the first groove and the second groove are annular grooves extending along the circumference of the mounting sleeve.

[0027] The annular groove facilitates the fit of multiple elastic claws, eliminating the alignment step and further improving assembly efficiency.

[0028] In some embodiments, the mounting beam also includes a second wall, the first wall and the second wall are arranged at an axial interval along the mounting sleeve, and the second surface is arranged facing the second wall; a second through hole is arranged on the second wall, and one end of the mounting sleeve is inserted into the second through hole.

[0029] The first wall and the second wall are spaced apart along the axial direction of the mounting sleeve, and one end of the mounting sleeve is inserted into the second through hole, so that the mounting beam forms a hollow structure, which can improve the mounting strength and reduce the weight at the same time.

[0030] In some embodiments, an insulating member is disposed between the mounting sleeve and the second wall.

[0031] By providing an insulating member between the mounting sleeve and the second wall, the risk of potential difference corrosion is reduced when the mounting sleeve and the second wall are made of different conductive materials.

[0032] In some embodiments, the mounting sleeve is a metal part; the ferrule is a plastic part; and the box body is a non-metal part.

[0033] The mounting sleeve is a metal part, which can improve the mounting strength; the ferrule is a non-metallic part, which can reduce the risk of corrosion due to the potential difference between the mounting sleeve and the first wall.

[0034] In a second aspect, an embodiment of the present application further provides an electrical device, comprising: the battery device of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope.

[0036] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0037] Figure 2 A schematic diagram of the structural decomposition of a battery device provided in some embodiments of the present application;

[0038] Figure 3 A schematic diagram of the structural decomposition of a battery cell provided in some embodiments of the present application;

[0039] Figure 4 A schematic diagram of the structure decomposition of the sleeve and the ferrule provided in some embodiments of the present application;

[0040] Figure 5A schematic diagram of the structure of the sleeve and the ferrule in a pre-assembled state provided in some embodiments of the present application;

[0041] Figure 6 A schematic diagram of the structure of the sleeve and the ferrule in an assembled state provided in some embodiments of the present application;

[0042] Figure 7 A cross-sectional view of a portion of the mounting beam structure provided for some embodiments of the present application;

[0043] Figure 8 A structural cross-sectional view of a sleeve and a ferrule provided in some embodiments of the present application in a pre-assembled state and in cooperation with a mounting beam;

[0044] Fig. 9 A structural cross-sectional view of the sleeve and the ferrule provided in some embodiments of the present application in cooperation with the mounting beam in the assembled state.

[0045] icon:

[0046] 1000-vehicle; 100-battery device; 200-controller; 300-motor;

[0047] 10-box; 11-mounting beam; 111-first wall; 112-second wall; 11a-first through hole; 11b-second through hole; 1111-first surface; 1112-second surface; 101-first box body; 102-second box body;

[0048] 20 - battery cell; 21 - housing; 22 - electrode assembly; 23 - electrode terminal; 211 - housing; 212 - end cover; 221 - main body; 222 - pole ear;

[0049] 30-mounting sleeve; 31-first groove; 32-sleeve body; 33-flange; 34-second groove; 301-outer peripheral surface; 311-bottom surface of first groove; 312-side surface of first groove; 313-side surface of second groove; 331-third surface; 341-bottom surface of second groove; 342-side surface of third groove;

[0050] 40-card sleeve; 41-card sleeve body; 42-elastic claw;

[0051] 50-Insulation parts. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in this application and in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0054] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places 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.

[0055] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can 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 application generally indicates that the associated objects before and after are in an "or" relationship.

[0057] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0058] The term “plurality” used in this application refers to two or more (including two).

[0059] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0060] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0061] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar.

[0062] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0063] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0064] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0065] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0066] As an example, the box body may include a first box body and a second box body. The first box body and the second box body are buckled together to form a closed space inside the box body to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box body can be a top cover or a bottom plate.

[0067] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0068] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0069] In some embodiments, the battery device refers to an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0070] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as electric tools, drones, energy storage equipment and other fields. With the continuous expansion of the application fields of battery devices, higher requirements are placed on the assembly efficiency of battery devices.

[0071] Generally, the battery device includes a box body, which is provided with a through hole for mounting. To improve mounting reliability, a mounting sleeve with a certain rigidity is added to the through hole to improve mounting strength. In the related art, the mounting sleeve is fixed to the through hole by gluing, resulting in low assembly efficiency.

[0072] In this regard, an embodiment of the present application provides a battery device, including: a battery cell; a box body for accommodating the battery cell, the box body including a mounting beam, the mounting beam being provided with a first through hole; a mounting sleeve, at least partially located in the first through hole; a clamping sleeve, sleeved on the mounting sleeve, and clamped with the periphery of the first through hole.

[0073] The mounting sleeve is sleeved on the mounting sleeve, and the mounting sleeve is clamped with the periphery of the first through hole. Thus, the mounting sleeve is quickly installed and fixed to the first through hole through the mounting sleeve, thereby improving assembly efficiency.

[0074] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electric devices such as vehicles, ships or aircraft. A power supply system comprising the battery device disclosed in the present application can be used to form the electric device, which is helpful to alleviate the adverse effects of the electrode terminal temperature on the battery cell, thereby improving the charge and discharge performance, service life and volume energy density of the battery device.

[0075] The embodiment of the present application provides an electric device using a battery device as a power source, and the electric device may be, but is 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 may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0076] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0077] 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 of the vehicle 1000, or at the head of the vehicle 1000, or at the 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 or a working power source of the vehicle 1000, etc. 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 the starting, navigation and working power requirements of the vehicle 1000 during driving.

[0078] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source or a usage 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.

[0079] Below, refer to Figures 2 to 9 , the battery device 100 of the present application is described in detail.

[0080] The embodiment of the present application provides a battery device 100, comprising: a box body 10, a battery cell 20, a mounting sleeve 30 and a clamping sleeve 40. The box body 10 is used to accommodate the battery cell 20, and the box body 10 includes a mounting beam 11, and the mounting beam 11 is provided with a first through hole 11a; the mounting sleeve 30 is at least partially located in the first through hole 11a; the clamping sleeve 40 is sleeved on the mounting sleeve 30, and is clamped with the periphery of the first through hole 11a.

[0081] The box 10 is used to provide a storage space for the battery cells 20. In the battery device 100, there can be multiple battery cells 20 arranged in the box 10. The multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 can also be a battery module formed by first connecting multiple battery cells 20 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and the whole is accommodated in the box 10.

[0082] In some embodiments, the battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar component, which is used to connect the multiple battery cells 20 to achieve electrical connection between the multiple battery cells 20 .

[0083] Each battery cell 20 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be in a rectangular parallelepiped, a cylinder, a prism or other shapes. For example, Figure 3 In the figure, the battery cell 20 is a rectangular parallelepiped structure.

[0084] As an example, see Figure 3 The battery cell 20 includes a housing 21 and an electrode assembly 22 disposed in the housing 21 .

[0085] The housing 21 can also be used to contain electrolytes, such as electrolytes. The housing 21 can be in various structural forms, such as a cylinder or a cuboid, etc. Similarly, the housing 21 can be made of various materials, such as copper, iron, aluminum, steel or aluminum alloy, etc.

[0086] Optionally, the outer shell 21 may include a shell 211 and an end cover 212, wherein a accommodating cavity is formed inside the shell 211, and the accommodating cavity is used to accommodate the electrode assembly 22, and the accommodating cavity has an opening, that is, the shell 211 is a hollow structure with an opening formed at one end, and the end cover 212 covers the opening of the shell 211 and forms a sealed connection to form a sealed space for accommodating the electrode assembly 22 and the electrolyte.

[0087] The shell 211 can be in various shapes, such as a cylinder, a cuboid, or a prism structure. The shape of the shell 211 can be determined according to the specific shape of the electrode assembly 22. For example, if the electrode assembly 22 is a cylindrical structure, a shell 211 with a cylindrical structure can be selected; if the electrode assembly 22 is a cuboid structure, a shell 211 with a cuboid structure can be selected. Of course, the structure of the end cap 212 can also be various, for example, the end cap 212 is a plate-like structure or a hollow structure with one end open. For example, in Figure 3 In the embodiment, the housing 211 is a rectangular parallelepiped structure.

[0088] Of course, it is understandable that the outer shell 21 is not limited to the above structure, and the outer shell 21 may also be other structures. For example, the outer shell 21 may include a shell body 211 and two end caps 212. The shell body 211 is a hollow structure with openings formed on two opposite sides. One end cap 212 corresponds to an opening of the shell body 211 and forms a sealed connection to form a sealed space for accommodating the electrode assembly 22 and the electrolyte. That is, the shell body 211 is formed with openings on two opposite sides, and the two end caps 212 are respectively covered on two sides of the shell body 211 to close the corresponding openings.

[0089] It should be noted that the electrode assembly 22 is the component where electrochemical reactions occur in the battery cell 20, and the structure of the electrode assembly 22 can be of various types. For example, the electrode assembly 22 can be a wound structure formed by winding a positive electrode sheet, an isolation member, and a negative electrode sheet, or it can be a stacked structure formed by stacking a positive electrode sheet, an isolation member, and a negative electrode sheet.

[0090] Exemplarily, the isolation member is an isolation membrane, and a main material of the isolation membrane may be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride.

[0091] The electrode assembly 22 includes a main body 221 and a tab 222. The main body 221 is a main component of the electrode assembly 22 for electrochemical reaction in the battery cell 20. Figure 3 In the embodiment, the tab 222 is connected to one end of the main body 221 close to the end cap 212, so that the tab 222 is connected to the electrode terminal 23. The tab 222 can be directly connected to the electrode terminal 23, or can be connected through a transition component.

[0092] Optionally, the number of electrode assemblies 22 contained in the housing 21 may be one or more. Figure 3 In the embodiment, the outer shell 21 of the battery cell 20 is provided with a plurality of electrode assemblies 22, and the plurality of electrode assemblies 22 are stacked. When a plurality of electrode assemblies 22 are provided in the outer shell 21 of the battery cell 20, the number of the electrode assemblies 22 may be two, three, four, five or six, etc.

[0093] The electrode terminal 23 serves to electrically connect the electrode assembly 22 to serve as an output terminal or an input terminal of the battery cell 20 , thereby being able to output or input electrical energy of the battery cell 20 .

[0094] Exemplarily, the electrode terminal 23 may be made of a variety of materials. For example, the electrode terminal 23 may be made of copper, iron, aluminum, steel, or aluminum alloy.

[0095] Among them, Figure 3In the figure, the battery cell 20 includes two electrode terminals 23, and correspondingly, each electrode assembly 22 has two pole ears 222, and the polarities of the two pole ears 222 are opposite, that is, the two pole ears 222 are respectively the positive electrode and negative electrode of the input or output electrode assembly 22, and the two electrode terminals 23 are respectively electrically connected to the two pole ears 222 of the electrode assembly 22 to realize the input or output of the positive and negative electrodes of the battery cell 20.

[0096] The electrode terminal 23 may be mounted on the housing 21 in various structures. Figure 3 In the embodiment, the two electrode terminals 23 are mounted on the end cap 212. Of course, the structure of the battery cell 20 is not limited thereto. In other embodiments, the two electrode terminals 23 may be mounted on the shell 211 of the shell 21. Similarly, one electrode terminal 23 may be mounted on the shell 211 of the shell 21, and the other electrode terminal 23 may be mounted on the end cap 212 of the shell 21.

[0097] The box body 10 may include a first box body 101 and a second box body 102. The first box body 101 and the second box body 102 are buckled together to form a closed space inside the box body 10 to accommodate the battery cells 20.

[0098] The box 10 includes a mounting beam 11, and the mounting beam 11 is provided with a first through hole 11a. The mounting beam 11 is a structure for mounting and fixing the battery device 100 on the electric device. The first through hole 11a is a connection point between the battery device 100 and the electric device.

[0099] As an example, the first through hole 11a may extend along the third direction Z. In the embodiment of the present application, the direction of arrow X is the first direction X, the direction of arrow Y is the second direction Y, and the direction of arrow Z is the third direction Z. The first direction X may be the length direction of the battery device 100, the second direction Y may be the width direction of the battery device 100, and the third direction Z may be the height direction of the battery device 100.

[0100] The mounting beam 11 may protrude from the outer wall of the box body 10. The mounting beam 11 may be a continuous beam, and a continuous beam is provided with a plurality of first through holes 11a. The mounting beam 11 may also be a plurality of segmented beams, and each segmented beam is provided with one or more first through holes 11a. A mounting sleeve 30 is installed in each first through hole 11a.

[0101] The mounting sleeve 30 is at least partially located in the first through hole 11a. The mounting sleeve 30 may be partially located in the first through hole 11a, or may be completely located in the first through hole 11a. The mounting sleeve 30 is a member having a certain rigidity so as to improve the connection strength of the first through hole 11a. Through the mounting sleeve 30, the battery device 100 can be securely mounted on the electrical device using fasteners such as bolts and screws. The mounting sleeve 30 may be a metal part, such as steel, aluminum, aluminum alloy, etc. The mounting sleeve 30 may also be an injection molded part, such as a reinforced fiber resin, etc.

[0102] The ferrule 40 is sleeved on the mounting sleeve 30 and is clamped with the periphery of the first through hole 11 a , so that the mounting sleeve 30 is installed and fixed to the first through hole 11 a through the ferrule 40 .

[0103] During assembly, the ferrule 40 can be firstly sleeved on the mounting sleeve 30, and then the mounting sleeve 30 and the ferrule 40 are inserted into the first through hole 11a together, and the mounting sleeve 30 is quickly installed in the first through hole 11a by clamping the ferrule 40 with the periphery of the first through hole 11a. Alternatively, the ferrule 40 can be firstly clamped with the periphery of the first through hole 11a, and then the mounting sleeve 30 is inserted into the ferrule 40, so that the mounting sleeve 30 is quickly installed in the first through hole 11a.

[0104] The mounting sleeve 30 is sleeved by the ferrule 40 , and the ferrule 40 is clamped with the periphery of the first through hole 11 a , so that the mounting sleeve 30 is quickly installed and fixed to the first through hole 11 a through the ferrule 40 , thereby improving assembly efficiency.

[0105] In some embodiments, the ferrule 40 includes a ferrule body 41 and a plurality of elastic claws 42. The ferrule body 41 is annular, and the plurality of elastic claws 42 are arranged at intervals along the circumference of the ferrule body 41. One end of each elastic claw 42 is connected to the ferrule body 41, and the other end is a free end; the elastic claws 42 are engaged with the periphery of the first through hole 11a.

[0106] The multiple elastic claws 42 can be retracted toward the center axis of the sleeve 40 or stretched out away from the center axis of the sleeve 40. The multiple elastic claws 42 are retracted toward each other so as to enter the first through hole 11a. The multiple elastic claws 42 are stretched out so as to engage with the periphery of the first through hole 11a.

[0107] As an example, the plurality of elastic claws 42 can be retracted to each other in a free state, and the plurality of elastic claws 42 can be moved relative to the ferrule 40 and stretched out during the process of the mounting sleeve 30 being inserted into the first through hole 11 a .

[0108] By arranging a plurality of elastic claws 42 at circumferential intervals along the ferrule body 41, the plurality of elastic claws 42 can be gathered together or spread apart. The plurality of elastic claws 42 are gathered together so as to smoothly enter the first through hole 11a. During the process of inserting the mounting sleeve 30 into the first through hole 11a, the mounting sleeve 30 moves relative to the ferrule 40 to spread the plurality of elastic claws 42 apart so as to engage with the periphery of the first through hole 11a. Thus, the mounting sleeve 30 can be quickly installed and fixed to the first through hole 11a, thereby improving assembly efficiency.

[0109] In some embodiments, the mounting beam 11 includes a first wall 111, the first wall 111 has a first surface 1111 and a second surface 1112 arranged opposite to each other along its thickness direction (third direction Z), and a first through hole 11a passes through the first surface 1111 and the second surface 1112; the ferrule body 41 abuts against the first surface 1111, and the elastic claw 42 passes through the first through hole 11a and abuts against the second surface 1112.

[0110] The ferrule body 41 abuts against the first surface 1111 , and the elastic claw 42 abuts against the second surface 1112 , thereby limiting the displacement of the ferrule 40 in both positive and negative directions along the third direction Z.

[0111] During assembly, the ferrule 40 can be firstly sleeved on the mounting sleeve 30, and then the mounting sleeve 30 and the ferrule 40 can be inserted into the first through hole 11a together. During the insertion process, the ferrule body 41 abuts against the first surface 1111, and the elastic claws 42 pass through the first through hole 11a. The mounting sleeve 30 continues to be inserted into the first through hole 11a along the third direction Z relative to the ferrule 40, and the multiple elastic claws 42 are stretched open so that the multiple elastic claws 42 are clamped with the periphery of the first through hole 11a.

[0112] Therefore, when the mounting sleeve 30 is inserted into the first through hole 11a, it can move smoothly relative to the clamping sleeve 40 to open the multiple elastic claws 42 so that the multiple elastic claws 42 can be engaged with the periphery of the first through hole 11a, thereby improving assembly efficiency and assembly reliability.

[0113] In some embodiments, a first groove 31 is provided on the outer circumference of the mounting sleeve 30, and the first groove 31 has a first groove bottom surface 311. Figure 6 and Fig. 9 ), the sleeve 40 is at least partially accommodated in the first groove 31, and the elastic claw 42 is in contact with the bottom surface 311 of the first groove.

[0114] The clamping sleeve 40 may be partially or completely accommodated in the first groove 31, so as to restrict the elastic claws 42 in the first groove 31, thereby restricting the axial (third direction Z) displacement of the mounting sleeve 30 through the elastic claws 42. The elastic claws 42 may be completely or partially fitted with the first groove bottom surface 311, so as to open a plurality of elastic claws 42 through the first groove bottom surface 311.

[0115] During assembly, the ferrule 40 can be firstly sleeved on the mounting sleeve 30, and then the mounting sleeve 30 and the ferrule 40 can be inserted into the first through hole 11a together. During the insertion process, the ferrule body 41 abuts against the first surface 1111, and the elastic claws 42 pass through the first through hole 11a. The mounting sleeve 30 continues to be inserted into the first through hole 11a along the third direction Z relative to the ferrule 40, and the multiple elastic claws 42 are stretched open through the first groove bottom surface 311, so that the elastic claws 42 are in contact with the first groove bottom surface 311 and are clamped with the periphery of the first through hole 11a.

[0116] In the assembled state, the sleeve 40 is at least partially accommodated in the first groove 31 to restrict the elastic claws 42 in the first groove 31. The elastic claws 42 fit with the first groove bottom surface 311, so that the first groove bottom surface 311 stretches out the multiple elastic claws 42 to engage with the periphery of the first through hole 11a, thereby preventing the mounting sleeve 30 from slipping out of the first through hole 11a and improving the installation reliability.

[0117] In some embodiments, along the axial direction (third direction Z) of the mounting sleeve 30 , the first groove 31 has a first groove side 312 and a second groove side 313 that are oppositely arranged, the ferrule body 41 abuts against the first groove side 312 , and the elastic claw 42 abuts against the second groove side 313 .

[0118] The elastic claw 42 abuts against the second groove side 313 to prevent the mounting sleeve 30 from slipping out of the through hole, and the ferrule body 41 abuts against the first groove side 312, and the mounting sleeve 30 is installed in place to prevent further insertion.

[0119] During assembly, the ferrule 40 can be firstly sleeved on the mounting sleeve 30, and then the mounting sleeve 30 and the ferrule 40 can be inserted into the first through hole 11a together. During the insertion process, the mounting sleeve 30 continues to be inserted into the first through hole 11a along the third direction Z relative to the ferrule 40 until the first groove side 312 abuts against the ferrule body 41. At this time, the first groove side 312 passes over the elastic claw 42 and abuts against it.

[0120] The ferrule body 41 abuts against the first groove side 312, and the elastic claw 42 abuts against the second groove side 313, so that the ferrule 40 is restricted in the first groove 31. In other words, through the cooperation between the first groove 31 and the ferrule 40, the axial displacement of the mounting sleeve 30 in both positive and negative directions in the first through hole 11a can be prevented, thereby further improving the assembly reliability.

[0121] In some embodiments, the mounting sleeve 30 includes a sleeve body 32 and a flange portion 33 disposed at one end of the sleeve body 32 . The flange portion 33 has a third surface 331 close to the sleeve body 32 . The third surface 331 is coplanar with the first groove side surface 312 .

[0122] Since the third surface 331 and the first groove side surface 312 are coplanar, in the assembled state, the flange portion 33 abuts against the ferrule body 41, and since the ferrule body 41 abuts against the mounting beam 11, the mounting beam 11, the ferrule body 41 and the flange portion 33 fit tightly together, thereby improving the mounting strength.

[0123] In some embodiments, a second groove 34 is further provided on the outer circumferential surface of the mounting sleeve 30, and the second groove 34 and the first groove 31 are arranged along the axial direction of the mounting sleeve 30; the second groove 34 has a second groove bottom surface 341, and the second groove bottom surface 341 is inclined relative to the central axis O of the mounting sleeve 30, so that the depth of the second groove 34 gradually decreases along the direction from the second groove 34 to the first groove 31; in the pre-assembled state (refer to Figure 5 and Figure 8 As shown in FIG. 3 ), the sleeve 40 is at least partially accommodated in the second groove 34 , and the elastic claw 42 is in contact with the bottom surface 341 of the second groove.

[0124] The ferrule 40 may be pre-engaged on the mounting sleeve 30 so that the plurality of elastic claws 42 fit with the second groove bottom surface 341 , so that the elastic claws 42 and the mounting sleeve 30 enter the first through hole 11 a together.

[0125] Therefore, by pre-sleeving the ferrule 40 on the mounting sleeve 30, the elastic claw 42 of the ferrule 40 fits with the bottom surface 341 of the second groove, so that during the installation process, the mounting sleeve 30 and the ferrule 40 can be directly inserted into the first through hole 11a together, which can achieve quick installation and improve assembly efficiency.

[0126] In some embodiments, the maximum depth of the second groove 34 is greater than the maximum depth of the first groove 31 .

[0127] The greater the depth of the first groove 31 and the second groove 34 , the greater the extent to which the plurality of elastic claws 42 are retracted toward each other.

[0128] During assembly, the ferrule 40 can be firstly sleeved on the mounting sleeve 30 so that the multiple elastic claws 42 fit with the second groove 34, so that the multiple elastic claws 42 and the mounting sleeve 30 enter the first through hole 11a together. During the insertion process, the mounting sleeve 30 continues to be inserted into the first through hole 11a along the third direction Z relative to the ferrule 40, and the multiple elastic claws 42 enter the first groove 31 from the second groove 34 and engage with the periphery of the first through hole 11a.

[0129] Since the maximum depth of the second groove 34 is greater than the maximum depth of the first groove 31, the multiple elastic claws 42 are retracted to a greater extent in the second groove 34 than in the first groove 31. As a result, the multiple elastic claws 42 can enter the first through hole 11a and can also be engaged with the periphery of the first through hole 11a.

[0130] In some embodiments, the first groove bottom surface 311 is inclined relative to the central axis O of the mounting sleeve 30 so that the depth of the first groove 31 gradually decreases along the direction from the second groove 34 to the first groove 31; the inclination angle of the second groove bottom surface 341 relative to the central axis O of the mounting sleeve 30 is greater than the inclination angle of the first groove bottom surface 311 relative to the central axis O of the mounting sleeve 30.

[0131] Since the inclination angle of the second groove bottom surface 341 relative to the central axis O of the mounting sleeve 30 is greater than the inclination angle of the first groove bottom surface 311 relative to the central axis O of the mounting sleeve 30, the multiple elastic claws 42 are retracted to a greater extent when they are in contact with the second groove bottom surface 341 than with the first groove bottom surface 311, so that the multiple elastic claws 42 can enter the first through hole 11a while also being able to engage with the periphery of the first through hole 11a.

[0132] In some embodiments, the second groove 34 also includes a third groove side 342 , the second groove bottom 341 is connected to the third groove side 342 at one end away from the first groove 31 , and the second groove bottom 341 is directly connected to the outer peripheral surface 301 of the mounting sleeve 30 at one end close to the first groove 31 .

[0133] In the pre-assembly state, the ferrule body 41 can be sleeved on the outer peripheral surface 301 of the mounting sleeve 30, the elastic claw 42 is in contact with the bottom surface 341 of the second groove, and the side surface 342 of the third groove can block the elastic claw 42 to prevent the ferrule 40 from escaping from the mounting sleeve 30, thereby improving the reliability in the pre-assembly state.

[0134] In some embodiments, the elastic claw 42 is in contact with the second groove bottom surface 341 in a free state.

[0135] The elastic claws 42 are in a free state, that is, in a state where there is no external force, that is, in a state where the amplitude of mutual contraction is the largest.

[0136] Thus, when the ferrule 40 is in the pre-assembled state of being sleeved on the mounting sleeve 30 , the elastic claw 42 can smoothly enter the first through hole 11 a .

[0137] In some embodiments, the elastic claw 42 may not be in contact with the second groove bottom surface 341 in a free state, that is, the elastic claw 42 is also stretched when it is in contact with the second groove bottom surface 341, but the stretching range is smaller than that when the elastic claw 42 is in contact with the first groove bottom surface 311.

[0138] In some embodiments, both the first groove 31 and the second groove 34 are annular grooves extending along the circumference of the mounting sleeve 30 .

[0139] The annular groove is easy to fit with the multiple elastic claws 42, eliminating the alignment step and further improving the assembly efficiency.

[0140] In some embodiments, the mounting beam 11 further includes a second wall 112. The first wall 111 and the second wall 112 are spaced apart along the axial direction of the mounting sleeve 30. The second surface 1112 faces the second wall 112. The second wall 112 is provided with a second through hole 11b ( Figure 7 As shown in FIG. 1 ), one end of the mounting sleeve 30 is inserted into the second through hole 11b.

[0141] The first wall 111 and the second wall 112 are spaced apart along the axial direction of the mounting sleeve 30 , and one end of the mounting sleeve 30 is inserted into the second through hole 11 b , so that the mounting beam 11 forms a hollow structure, which helps to reduce weight and improve connection strength.

[0142] In some embodiments, an insulating member 50 is disposed between the mounting sleeve 30 and the second wall 112 .

[0143] The insulating member 50 may be an independent component, such as a rubber member, a plastic member, etc. The insulating member 50 may also be an insulating coating coated on the outer circumference of the mounting sleeve 30 or the inner circumference of the second wall 112 .

[0144] By disposing the insulating member 50 between the mounting sleeve 30 and the second wall 112 , the risk of potential difference corrosion is reduced when the mounting sleeve 30 and the second wall 112 are made of different conductive materials.

[0145] In some embodiments, the mounting sleeve 30 is a metal part, the ferrule 40 is a plastic part, and the box body 10 is a non-metal part. The non-metal part can be, for example, a fiber-reinforced resin, and the fiber-reinforced resin can be a carbon fiber injection molded part, a glass fiber injection molded part, and the like.

[0146] The mounting sleeve 30 is a metal part, which can improve the mounting strength; the ferrule 40 is a plastic part, which can reduce the risk of corrosion due to the potential difference between the mounting sleeve 30 and the first wall 111; the box body 10 is a carbon fiber injection molded part, which helps to reduce weight.

[0147] Below, refer to Figures 2 to 9 , a specific example of the present application is described.

[0148] The embodiment of the present application provides a battery device 100 , including a box body 10 , a battery cell 20 , a mounting sleeve 30 and a ferrule 40 .

[0149] The battery cell 20 is accommodated in the box body 10, and the box body 10 is provided with a mounting beam 11, the mounting beam 11 includes a first through hole 11a, the mounting sleeve 30 is arranged in the first through hole 11a, and the ferrule 40 is sleeved on the mounting sleeve 30. The mounting beam 11 includes a first wall 111 and a second wall 112 arranged axially spaced apart from each other along the mounting sleeve 30, the first wall 111 is provided with a first through hole 11a, and the second wall 112 is provided with a second through hole 11b.

[0150] The mounting sleeve 30 includes a sleeve body 32 and a flange portion 33 . The sleeve body 32 is provided with an annular first groove 31 and a second groove 34 . The inclination angle of the second groove bottom surface 341 of the second groove 34 is greater than the inclination angle of the first groove bottom surface 311 of the first groove 31 .

[0151] The ferrule 40 includes a ferrule body 41 and a plurality of elastic claws 42 connected to the ferrule body 41 . The plurality of elastic claws 42 are arranged at intervals along the circumference of the ferrule body 41 .

[0152] In the pre-assembled state, refer to Figure 5 and Figure 8 , the ferrule 40 is pre-mounted on the mounting sleeve 30, the elastic claw 42 is located in the second groove 34, and fits the second groove bottom surface 341 and is in a free state, the mounting sleeve 30 and the ferrule 40 are inserted into the first through hole 11a together, the ferrule body 41 is against the first surface 1111 of the first wall 111, and the elastic claw 42 passes through the first through hole 11a; then the mounting sleeve 30 moves relative to the ferrule 40 and continues to be inserted into the first through hole 11a until the flange portion 33 is against the ferrule body 4 1. During this process, the mounting sleeve 30 opens the elastic claw 42 so that the elastic claw 42 is engaged with the periphery of the first through hole 11a. When the elastic claw 42 is engaged with the periphery of the first through hole 11a, the elastic claw 42 enters the first groove 31 from the second groove 34, and the elastic claw 42 rebounds a short distance to abut against the first groove 31, thereby limiting the axial displacement of the mounting sleeve 30 and preventing the mounting sleeve 30 from coming out, thereby switching to the assembly state ( Figure 6 and Fig. 9 as shown).

[0153] In the assembled state, one end of the mounting sleeve 30 is inserted into the second through hole 11b, and an insulating member 50 is provided between the mounting sleeve 30 and the second through hole 11b to reduce the risk of corrosion due to the potential difference between the mounting sleeve 30 and the mounting beam 11. The mounting sleeve 30 may be a metal member, the ferrule 40 may be a plastic member, and the mounting beam 11 may be a carbon fiber member.

[0154] The embodiment of the present application further provides an electrical device, including: the battery device 100 according to any of the above embodiments.

[0155] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that: include: Battery cells; A box body, used to accommodate the battery cell, the box body includes a mounting beam, and the mounting beam is provided with a first through hole; A mounting sleeve, at least partially located in the first through hole; The clamping sleeve is sleeved on the mounting sleeve and clamped with the periphery of the first through hole.

2. The battery device according to claim 1, characterized in that: The ferrule comprises a ferrule body and a plurality of elastic claws, wherein the ferrule body is annular, and the plurality of elastic claws are arranged at intervals along the circumference of the ferrule body, and one end of each elastic claw is connected to the ferrule body, and the other end is a free end; The elastic claw is engaged with the periphery of the first through hole.

3. The battery device according to claim 2, characterized in that: The mounting beam comprises a first wall, the first wall having a first surface and a second surface arranged opposite to each other along a thickness direction thereof, and the first through hole penetrates the first surface and the second surface; The ferrule body is in contact with the first surface, and the elastic claw is passed through the first through hole and in contact with the second surface.

4. The battery device according to claim 3, characterized in that: A first groove is provided on the outer circumferential surface of the mounting sleeve, and the first groove has a first groove bottom surface; In the assembled state, the ferrule is at least partially accommodated in the first groove, and the elastic claw is in contact with the bottom surface of the first groove.

5. The battery device according to claim 4, characterized in that: Along the axial direction of the mounting sleeve, the first groove has a first groove side surface and a second groove side surface that are oppositely arranged, the ferrule body abuts against the first groove side surface, and the elastic claw abuts against the second groove side surface.

6. The battery device according to claim 5, characterized in that: The mounting sleeve includes a sleeve body and a flange portion arranged at one end of the sleeve body, the flange portion has a third surface close to the sleeve body, and the third surface is coplanar with the side surface of the first groove.

7. The battery device according to claim 4, characterized in that: A second groove is also provided on the outer circumferential surface of the mounting sleeve, and the second groove and the first groove are arranged along the axial direction of the mounting sleeve; The second groove has a second groove bottom surface, and the second groove bottom surface is inclined relative to the central axis of the mounting sleeve, so that the depth of the second groove gradually decreases along the direction from the second groove to the first groove; In the pre-assembled state, the ferrule is at least partially accommodated in the second groove, and the elastic claw is in contact with the bottom surface of the second groove.

8. The battery device according to claim 7, characterized in that: The maximum depth of the second groove is greater than the maximum depth of the first groove.

9. The battery device according to claim 7, characterized in that: The bottom surface of the first groove is inclined relative to the central axis of the mounting sleeve, so that the depth of the first groove gradually decreases along the direction from the second groove to the first groove; An inclination angle of the bottom surface of the second groove relative to the central axis of the mounting sleeve is greater than an inclination angle of the bottom surface of the first groove relative to the central axis of the mounting sleeve.

10. The battery device according to claim 7, characterized in that: The second groove also includes a third groove side surface, the second groove bottom surface is connected to the third groove side surface at one end away from the first groove, and the second groove bottom surface is directly connected to the outer peripheral surface of the mounting sleeve at one end close to the first groove.

11. The battery device according to claim 7, characterized in that: The elastic claw is in contact with the bottom surface of the second groove in a free state.

12. The battery device according to claim 7, characterized in that: The first groove and the second groove are both annular grooves extending along the circumference of the mounting sleeve.

13. The battery device according to any one of claims 3 to 12, characterized in that: The mounting beam further includes a second wall, the first wall and the second wall are spaced apart along the axial direction of the mounting sleeve, and the second surface is disposed facing the second wall; The second wall is provided with a second through hole, and one end of the mounting sleeve is inserted into the second through hole.

14. The battery device according to claim 13, characterized in that: An insulating member is arranged between the mounting sleeve and the second wall.

15. The battery device according to claim 1, characterized in that: The mounting sleeve is a metal part; The ferrule is a plastic part; The box body is a non-metallic part.

16. An electrical device, characterized in that: include: A battery device as claimed in any one of claims 1 to 15.

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