Hanging structure, battery device and electric equipment

Abstract

The utility model discloses a mounting structure, a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a battery box body, a plurality of battery monomers arranged in the battery box body, a box body beam and a mounting structure, the battery box body is provided with a connecting hole, and the mounting structure comprises a first locking piece and a second locking piece; one end of the first locking piece is connected to the box body beam, and the other end of the first locking piece abuts against the inner wall of the battery box body and is arranged around the connecting hole; at least part of the second locking piece is arranged outside the battery box body, one end of the second locking piece penetrates through the connecting hole and extends into the battery box body so as to be connected with the first locking piece, an assembly hole is formed in the end, away from the first locking piece, of the second locking piece, and the assembly hole is configured to be connected with a fastener of a carrier in a matched mode. According to the technical scheme provided by the invention, the problem of high airtight failure risk of the battery device can be solved.

Description

Technical Field

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

[0002] Battery devices are commonly used in new energy vehicles to provide driving power for new energy vehicles. With the continuous development of new energy technologies, the strength and reliability requirements for new energy vehicles are getting higher and higher. Battery devices are important components of new energy vehicles, so the assembly requirements between battery devices and the entire vehicle are also getting higher and higher.

[0003] In related technologies, the fixing points between the battery device and the entire vehicle are mostly distributed around and in the middle of the battery device, and the middle fixing point is connected using a mounting structure. However, the current mounting structure is composed of a large number of parts, has many assembly steps, and involves two sealing interfaces, resulting in a high risk of airtight failure of the battery device. Utility Model Content

[0004] In view of the above problems, the present application provides a mounting structure, a battery device and an electrical device, aiming to solve the problem of high risk of airtight failure of the battery device.

[0005] The present application provides a battery device, including a battery case, a plurality of battery cells arranged in the battery case, a case beam and a mounting structure, the battery case is provided with a connecting hole, and the mounting structure includes a first locking member and a second locking member; one end of the first locking member is connected to the case beam, the other end of the first locking member abuts against the inner wall of the battery case and is arranged around the connecting hole; the second locking member is at least partially arranged outside the battery case, one end of the second locking member is passed through the connecting hole and extends into the battery case to be connected with the first locking member, and an assembly hole is provided at the end of the second locking member away from the first locking member, and the assembly hole is configured to cooperate with the fastener of the carrier for connection.

[0006] In the technical solution of the embodiment of the present application, the mounting structure adopted in the technical solution of the present application is connected only by the first locking member and the second locking member, one end of the first locking member is directly connected to the box beam, and the other end of the first locking member is abutted against the inner wall of the battery case, and is arranged around the connection hole, so that a sealing interface is formed between the first locking member and the battery case, and the second locking member is used to directly connect the battery case and the first locking member. When the battery case is connected to the carrier, the fastener on the carrier can be used to directly lock it on the assembly hole of the second locking member. Therefore, the mounting structure used in this solution only needs to use the first locking member and the second locking member, reducing the use of the bottom sleeve and the adapter sleeve, and simultaneously eliminating the corresponding locking and installation process, and removing the sealing interface between the bottom sleeve and the bottom plate of the battery case, involving only one sealing interface, thereby effectively solving the problem of high risk of airtight failure of the battery device.

[0007] In some embodiments, an insertion hole is provided at the end of the box beam near the connection hole, and one end of the first locking member away from the second locking member is inserted into the insertion hole. Such a design can increase the connection area between the first locking member and the box beam by inserting one end of the first locking member into the insertion hole of the box beam, thereby improving the connection reliability between the first locking member and the box beam.

[0008] In some embodiments, the first locking member is welded to the box beam. Such a design, by welding the first locking member to the box beam, is not only simple to operate, but also makes the connection reliability between the first locking member and the box beam higher.

[0009] In some embodiments, the first locking member and the second locking member are threadedly matched. With this design, during installation, the first locking member can be inserted into the battery box through the connection hole of the battery box, and then the first locking member can be directly screwed to lock the first locking member on the second locking member, which is easier to operate.

[0010] In some embodiments, the first locking member is a long sleeve, and the second locking member is a top sleeve. The maximum dimension of the long sleeve in the height direction is greater than the maximum dimension of the top sleeve in the height direction. A threaded hole is provided at the end of the long sleeve away from the box beam, and an outer wall of one end of the top sleeve is provided with an external thread. The end of the top sleeve provided with the external thread is inserted into the threaded hole and threadedly matched with the threaded hole. Such a design can make one end of the top sleeve a stud-shaped structure, so that the top sleeve can be inserted into the threaded hole of the long sleeve from the height direction after passing through the connection hole of the battery box, and the top sleeve can be screwed so that the end of the top sleeve in the stud shape can be screwed into the threaded hole of the long sleeve, so that the first locking member and the second locking member can be threadedly connected.

[0011] In some embodiments, a sealing ring is provided at the end of the first locking member away from the box beam, and the sealing ring abuts against the inner wall of the battery box with the connection hole. With such a design, the addition of the sealing ring can improve the sealing between the first locking member and the battery box, so as to prevent the internal space of the battery box from being connected to the connection hole through the gap between the first locking member and the battery box, and then being connected to the outside through the connection hole, thereby improving the airtightness of the battery box.

[0012] In some embodiments, the assembly hole is a blind hole, and the inner wall of the blind hole is provided with an internal thread. With such a design, when the battery box needs to be installed on the carrier, the fastener on the carrier can be directly inserted into the blind hole of the second locking member and threadedly matched with the internal thread on the blind hole, so that the battery box can be installed on the carrier. Since the assembly hole is a blind hole, the internal space of the battery box will not be connected to the outside through the assembly hole, which can improve the airtightness of the battery box.

[0013] In some embodiments, the connection hole is provided on the upper cover of the battery box. In this design, by providing the connection hole on the upper cover, when the battery box is mounted on the carrier, the fastener on the carrier can be directly inserted into the assembly hole of the second locking member from top to bottom, making it easier to mount the battery device on the carrier.

[0014] In some embodiments, the upper cover includes an upper cover body and a lifting member, the upper cover body is provided with a mounting hole, the lifting member is provided in the mounting hole, the lifting member is provided with a connecting hole, and the lifting member is configured to support the second locking member. Such a design supports the second locking member by using the lifting member, so that the height of the second locking member can be adjusted through the design of the lifting member, the mounting surface height of the second locking member is raised, and a sufficiently long locking length space is provided for the fastener of the carrier, which can avoid the fastener of the carrier being too long or the locking height surface being too high, resulting in insufficient locking space between the fastener and the second locking member or mismatch between the second locking member and the carrier, thereby improving the connection reliability between the fastener of the carrier and the second locking member.

[0015] In some embodiments, the second locking member includes a first connecting section, a second connecting section and a fixed section; the first connecting section is connected to the first locking member; the second connecting section is connected to the end of the first connecting section and is inserted into the connecting hole; the fixed section is connected to the end of the second connecting section away from the first connecting section, the outer diameter of the fixed section is larger than the outer diameters of the first connecting section and the second connecting section, the lifting member is located between the fixed section and the first locking member, and the fixed section abuts against the lifting member. With such a design, the first connecting section can be used to achieve connection with the first locking member, and the second connecting member can be used to penetrate the connecting hole of the upper cover, while the fixed section abuts against the lifting member, and the fixed section is supported by the lifting member to raise the height of the second locking member, so that the second locking member can be used to achieve effective connection with the first locking member and the battery case, while achieving the lifting of the second locking member.

[0016] In some embodiments, the lifting member and the upper cover body are an integrated structure. Such a design, the integrated structure design can not only make the connection reliability between the lifting member and the upper cover body higher, but also simplify the manufacturing process.

[0017] In some embodiments, the box beam is configured to separate two groups of battery cells, or to separate a battery cell group and an electronic control assembly, and a battery cell group includes at least one battery cell. With such a design, when some of the multiple battery cells swell, the expansion force acts on the box beams on both sides, so that the box beams generate a compressive force that reacts on the battery cells to limit the expansion of the battery cells, thereby improving the safety performance of the battery.

[0018] The present application also provides a mounting structure, which includes a first locking member and a second locking member; one end of the first locking member is connected to the box beam, the other end of the first locking member abuts against the inner wall of the battery box, and is arranged around the connecting hole of the battery box; the second locking member is at least partially arranged outside the battery box, one end of the second locking member is passed through the connecting hole and extends into the battery box to connect with the first locking member, and an assembly hole is provided at the end of the second locking member away from the first locking member, and the assembly hole is configured to cooperate with the fastener of the carrier for connection.

[0019] The present application also provides an electrical device, comprising the above-mentioned battery device.

[0020] 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, which can be implemented in accordance with the contents of the specification, and to make 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

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A partial structural cross-sectional view of an embodiment of a battery device of the present application;

[0023] Figure 2 An exploded view of an embodiment of a battery device of the present application;

[0024] Figure 3 This is a schematic structural diagram of a vehicle according to an embodiment of the present application.

[0025] Description of Figure Numbers:

[0026]

[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0031] 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.

[0032] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] The battery device mentioned in this field is also called a battery. It can be divided into disposable batteries and rechargeable batteries according to whether it is rechargeable. The common types of rechargeable batteries are: lead-acid batteries, nickel-metal hydride batteries and lithium-ion batteries. Lithium-ion batteries are currently widely used in pure electric vehicles and hybrid vehicles. The capacity of lithium-ion batteries used for this purpose is relatively low, but they have larger output and charging current, and also have a longer service life, but the cost is higher.

[0036] The battery described in the embodiments of the present application refers to a rechargeable battery. The embodiments disclosed in the present application will be described below mainly by taking a lithium-ion battery as an example. It should be understood that the embodiments disclosed in the present application are applicable to any other appropriate type of rechargeable battery. The battery mentioned in the embodiments disclosed in the present application can be directly or indirectly applied to an appropriate device to power the device.

[0037] The battery mentioned in the embodiments disclosed in this application refers to a single physical module including one or more battery cells to provide a predetermined voltage and capacity. Battery cells are the basic units in the battery, and can generally be divided into: cylindrical battery cells, rectangular battery cells and soft-pack battery cells according to the packaging method. The following will mainly focus on rectangular battery cells. It should be understood that the embodiments described below are also applicable to cylindrical battery cells or soft-pack battery cells in some aspects.

[0038] A battery cell includes a positive electrode sheet, a negative electrode sheet, an electrolyte and a separator. Lithium-ion battery cells mainly rely on the movement of lithium ions between the positive electrode sheet and the negative electrode sheet to work. In cylindrical battery cells, the film structure of three layers of material is wound into a cylindrical electrode assembly, while in rectangular battery cells, the film structure is wound or stacked into an electrode assembly with a roughly rectangular shape.

[0039] In a common battery cell structure, the battery cell includes a shell, an electrode assembly and an electrolyte. The electrode assembly is contained in the shell of the battery cell, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The shell includes a shell and an end cap. The shell includes a housing formed by a plurality of walls and an opening. The end cap is arranged at the opening to close the housing chamber. In addition to the electrode assembly, the housing chamber also contains an electrolyte. The positive electrode sheet and the negative electrode sheet in the electrode assembly include tabs. In order to avoid passing a large current without melting, the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together. The tabs are electrically connected to the electrode terminals located outside the battery cell through connecting members, and the electrode terminals generally include a positive electrode terminal and a negative electrode terminal. For a rectangular battery cell, the electrode terminal is generally arranged at the end cap portion. A plurality of battery cells are connected in series and / or in parallel via the electrode terminals for application in various applications.

[0040] In some high-power applications such as electric vehicles, the application of batteries includes three levels: battery cells, battery modules and batteries. The battery module is formed by electrically connecting a certain number of battery cells together and placing them in a frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery refers to the final state of the battery system installed in the electric vehicle. The battery generally includes a battery box for encapsulating one or more battery cells.

[0041] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. The battery consists of a battery box and multiple battery cells contained in the battery box. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of safety. At present, the mechanical safety of power batteries during use is one of the battery safety issues that consumers generally care about.

[0042] The battery provided in the embodiment of the present application can be a power source for electric devices. The electric devices can be mobile phones, portable devices, laptop computers, battery cars, electric cars, ships, spacecraft, electric toys and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers.

[0043] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0044] For example, Figure 3This is a structural diagram of an embodiment of a vehicle 1000 of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle, etc. A battery device 100, a controller 200 and a motor 300 may be provided inside the vehicle 1000. The controller 200 is used to control the battery device 100 to power the motor 300. For example, a battery device 100 may be provided at the bottom, front or rear 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, for the circuit system of the vehicle 1000, for example, for the working power demand during the start, navigation and operation of the vehicle 1000. In another embodiment of the present application, the battery device 100 may not only be used as an operating power source for the vehicle 1000, but also 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.

[0045] For example, see Figure 2 , Figure 2 An exploded view of the structure of a battery device 100 provided for some embodiments of the present application. The battery device 100 includes a battery case 10 and a battery cell 20, and the battery case 10 has a storage space for accommodating the battery cell 20. Among them, the battery case 10 can adopt a variety of structures. In some embodiments, the battery case 10 may include a first part 10a and a second part 10b, the first part 10a and the second part 10b cover each other, and the first part 10a and the second part 10b jointly define a storage space for accommodating the battery cell 20. The second part 10b may be a hollow structure with one end open, the first part 10a may be a plate-like structure, and the first part 10a covers the open side of the second part 10b, so that the first part 10a and the second part 10b jointly define a storage space; the first part 10a and the second part 10b may also be hollow structures with one side open, and the open side of the first part 10a covers the open side of the second part 10b. Of course, the battery case 11 formed by the first part 10a and the second part 10b can be in various shapes, such as a cylinder, a cuboid, etc.

[0046] In the battery device 100, there can be one or more battery cells 20. When the battery device 100 has multiple battery cells 20, 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 battery box 10; of course, the battery device 100 can also be a battery module formed by 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 accommodated in the battery box 10.

[0047] Battery devices are commonly used in new energy vehicles to provide driving power for new energy vehicles. With the continuous development of new energy technologies, the strength and reliability requirements for new energy vehicles are getting higher and higher. Battery devices are important components of new energy vehicles, so the assembly requirements between battery devices and the entire vehicle are also getting higher and higher.

[0048] In related technologies, the battery device and the vehicle fixing points are mostly distributed around and in the middle of the battery device. The middle fixing point is connected by a mounting structure. The mounting structure is mostly composed of four parts: top sleeve, adapter sleeve, long sleeve, and bottom sleeve. They are fixed by threaded locking on the sleeve. The bottom sleeve and long sleeve combination is responsible for the sealing interface with the bottom (water cooling plate), and the top sleeve and adapter sleeve combination is responsible for the sealing interface with the top (upper cover). Therefore, the current mounting structure consists of a large number of parts, many assembly processes, and involves two sealing interfaces, resulting in a high risk of airtight failure of the battery device.

[0049] Based on the above problems, the present application proposes a battery device 100, which aims to solve the problem of high risk of airtight failure of the battery device 100. The battery device 100 will be described in detail below with reference to specific drawings and embodiments.

[0050] See also Figure 1 In one embodiment of the present application, the battery device 100 includes a battery case 10, a plurality of battery cells 20 arranged in the battery case 10, a box beam 30 and a mounting structure 40, the battery case 10 is provided with a connecting hole 11a, and the mounting structure 40 includes a first locking member 41 and a second locking member 42; one end of the first locking member 41 is connected to the box beam 30, and the other end of the first locking member 41 abuts against the inner wall of the battery case 10 and is arranged around the connecting hole 11a; the second locking member 42 is at least partially arranged outside the battery case 10, one end of the second locking member 42 is penetrated through the connecting hole 11a and extends into the battery case 10 to be connected with the first locking member 41, and the end of the second locking member 42 away from the first locking member 41 is provided with an assembly hole 42a, and the assembly hole 42a is configured to be matched with the fastener of the carrier for connection.

[0051] The box beam 30 refers to a structure for dividing the internal space of the battery box 10, and may also be called an expansion beam. Optionally, at least two expansion beams are provided, and at least two expansion beams are spaced apart in the battery box 10, and the battery cell 20 is clamped between the at least two expansion beams, so that the battery cell 20 is clamped by the at least two expansion beams.

[0052] The expansion beam is a component used to limit the expansion amount of the battery cell 20. The expansion beam can be a metal part. It is understood that the material of the expansion beam is metal, such as aluminum, aluminum alloy, iron, stainless steel, copper, etc., which is not specifically limited here. Of course, the expansion beam can also be a non-metallic part. It is understood that the material of the expansion beam is non-metal, such as plastic, carbon fiber, wood, etc., which is not specifically limited here. In addition, when there are at least two expansion beams, the materials of the at least two expansion beams can be the same or different.

[0053] When some of the battery cells 20 expand, the expansion force acts on the expansion beams on both sides, causing the expansion beams to generate a compressive force that reacts on the battery cells 20 to limit the expansion amount of the battery cells 20, thereby improving the safety performance of the battery.

[0054] The mounting structure 40 refers to a structure used to mount the battery box 10 on a carrier, serving as a middle fixing point of the battery box 10 .

[0055] The first locking member 41 refers to a structural member used to lock on the box beam 30. The first locking member 41 can be a connecting sleeve, or a locking member such as a nut or a screw, as long as it can be connected to the box beam 30 and can cooperate with the second locking member 42. The first locking member 41 can be connected to the box beam 30 by welding, threaded connection, clamping, bonding, etc.

[0056] The second locking member 42 refers to a structure for locking on the battery box 10. The second locking member 42 can be a connecting sleeve, or a locking member such as a nut or a screw, as long as it can be connected to the battery box 10 and can cooperate with the first locking member 41. The second locking member 42 can be connected to the first locking member 41 by threaded connection, clamping, etc.

[0057] The fastener is a connecting structural member used to connect the carrier to the battery box 10 and may be a bolt.

[0058] In practical applications, the connection hole 11 a may be provided on the upper cover 11 of the battery case 10 , or may be provided on the side wall of the battery case 10 .

[0059] In summary, in the technical solution of the embodiment of the present application, the mounting structure 40 adopted in the technical solution of the present application is connected only by the first locking member 41 and the second locking member 42, one end of the first locking member 41 is directly connected to the box beam 30, and the other end of the first locking member 41 is abutted against the inner wall of the battery case 10, and is arranged around the connection hole 11a, so that a sealing interface is formed between the first locking member 41 and the battery case 10, and the second locking member 42 is used to directly connect the battery case 10 and the first locking member 41. When the battery case 10 is connected to the carrier, the fastener on the carrier can be used to directly lock it on the assembly hole 42a of the second locking member 42. Therefore, the mounting structure 40 used in the present solution only needs to use the first locking member 41 and the second locking member 42, thereby reducing the use of the bottom sleeve and the adapter sleeve, and simultaneously eliminating the corresponding locking and installation process, and removing the sealing interface between the bottom sleeve and the bottom plate of the battery box 10, involving only one sealing interface, thereby effectively solving the problem of high risk of airtight failure of the battery device 100.

[0060] See also Figure 1 In one embodiment of the present application, a plug hole 31 is provided at the end of the box beam 30 close to the connecting hole 11 a , and an end of the first locking member 41 away from the second locking member 42 is inserted into the plug hole 31 .

[0061] In this embodiment, the box beam 30 may be a solid beam or a profile beam. When the box beam 30 is a solid beam, the insertion hole 31 on the box beam 30 may be an opening opened at the end of the box beam 30; when the box beam 30 is a profile beam, the insertion hole 31 on the box beam 30 may be a cavity of the profile beam.

[0062] Such a design can increase the connection area between the first locking member 41 and the box beam 30 by inserting one end of the first locking member 41 into the insertion hole 31 of the box beam 30, so as to improve the connection reliability between the first locking member 41 and the box beam 30.

[0063] See also Figure 1 In one embodiment of the present application, the first locking member 41 is welded to the box beam 30 .

[0064] Such a design, in which the first locking member 41 is connected to the box beam 30 by welding, is not only easy to operate, but also makes the connection reliability between the first locking member 41 and the box beam 30 higher.

[0065] In actual application, the first locking member 41 can be welded to the box beam 30 by spot welding, arc welding, laser welding, etc. Of course, in one embodiment, the first locking member 41 can be connected to the box beam 30 by spot welding, which can reduce the welding cost while improving the connection reliability. For example, a plurality of welds 32 are formed between the first locking member 41 and the insertion hole 31 of the box beam 30, and the plurality of welds 32 can be distributed at intervals along the axial direction of the first locking member 41, so that spot welding is performed at the plurality of welds 32 respectively, so that a plurality of welding points are formed between the first locking member 41 and the box beam 30.

[0066] See also Figure 1 In one embodiment of the present application, the first locking member 41 and the second locking member 42 are threadedly matched.

[0067] With this design, during installation, the first locking member 41 can be inserted into the battery case 10 through the connecting hole 11a of the battery case 10, and then the first locking member 41 can be directly screwed to lock the first locking member 41 on the second locking member 42, which makes the operation easier.

[0068] In actual application, a threaded hole 41a can be provided on the first locking member 41, and a stud can be provided on the second locking member 42 to match the stud of the second locking member 42 with the threaded hole 41a of the first locking member 41; or, a stud can be provided on the first locking member 41, and a threaded hole 41a can be provided on the second locking member 42 to match the stud on the first locking member 41 with the threaded hole 41a of the second locking member 42.

[0069] See also Figure 1 In one embodiment of the present application, the first locking member 41 is a long sleeve, and the second locking member 42 is a top sleeve. The maximum dimension of the long sleeve in the height direction is greater than the maximum dimension of the top sleeve in the height direction. A threaded hole 41a is provided at the end of the long sleeve away from the box beam 30, and an external thread is provided on the outer wall of one end of the top sleeve. The end of the top sleeve with the external thread is inserted into the threaded hole 41a and threadedly matched with the threaded hole 41a.

[0070] Such a design can make one end of the top sleeve into a stud-shaped structure, so that after the top sleeve passes through the connection hole 11a of the battery case 10, it is inserted into the threaded hole 41a of the long sleeve from the height direction, and the top sleeve is twisted, so that the end of the top sleeve in the stud shape can be screwed into the threaded hole 41a of the long sleeve, so that the first locking member 41 and the second locking member 42 can be threadedly connected. In addition, the maximum dimension of the long sleeve in the height direction is greater than the maximum dimension of the top sleeve in the height direction, so that the threaded hole 41a of the first locking member 41 can be set to be long enough, and after the top sleeve passes through the connection hole 11a of the battery case 10, it is inserted into the threaded hole 41a of the long sleeve from the height direction, so that the locking reliability between the second locking member 42 and the first locking member 41 is higher.

[0071] See also Figure 1 In one embodiment of the present application, a sealing ring 41 b is provided at the end of the first locking member 41 away from the box beam 30 , and the sealing ring 41 b abuts against the inner wall of the battery box 10 where the connecting hole 11 a is provided.

[0072] The sealing ring 41b is used to seal the gap between the end of the first locking member 41 and the inner wall of the battery case 10 with the connecting hole 11a, so as to seal the sealing interface between the first locking member 41 and the battery case 10. The sealing ring 41b can be a silicone ring or a rubber ring.

[0073] With such a design, the addition of the sealing ring 41b can improve the sealing between the first locking member 41 and the battery case 10 to prevent the internal space of the battery case 10 from being connected to the connecting hole 11a through the gap between the first locking member and the battery case 10, and then being connected to the outside through the connecting hole 11a, thereby improving the airtightness of the battery case 10.

[0074] See also Figure 1 In one embodiment of the present application, the assembly hole 42a is a blind hole, and the inner wall of the blind hole is provided with an internal thread.

[0075] With such a design, when the battery box 10 needs to be mounted on a carrier, the fastener on the carrier can be directly inserted into the blind hole of the second locking member 42 and threadedly matched with the internal thread on the blind hole, so that the battery box 10 can be mounted on the carrier. Since the assembly hole 42a is a blind hole, the internal space of the battery box 10 will not be connected to the outside through the assembly hole 42a, which can improve the airtightness of the battery box 10.

[0076] See also Figure 1 In one embodiment of the present application, the connection hole 11 a is provided on the upper cover 11 of the battery box 10 .

[0077] In this embodiment, the connecting hole 11a is arranged at a position of the upper cover 11 corresponding to the box beam 30, so that the connecting hole 11a is arranged opposite to the first locking member 41 connected to the box beam 30, so that the second locking member 42 can be easily connected to the first locking member 41 after passing through the connecting hole 11a.

[0078] With this design, by setting the connection hole 11a on the upper cover 11, when the battery box 10 is installed on a carrier, the fastener on the carrier can be directly inserted into the assembly hole 42a of the second locking member 42 from top to bottom, which makes it easier to install the battery device 100 on the carrier.

[0079] See also Figure 1 In one embodiment of the present application, the upper cover 11 includes an upper cover body 111 and a lifting member 112. The upper cover body 111 is provided with a mounting hole, the lifting member 112 is arranged in the mounting hole, the lifting member 112 is provided with a connecting hole 11a, and the lifting member 112 is configured to support the second locking member 42.

[0080] The lifting member 112 is used to support the second locking member 42 to raise the height of the second locking member 42. The lifting member 112 is provided with a connecting hole 11a so that the lifting member 112 is a sleeve-shaped structure. The lifting member 112 can be an integral structure with the upper cover body 111, or a separate structure with the upper cover body 111, and can be connected to the upper cover body 111 by welding, bonding, threaded connection, etc.

[0081] Such a design, by using a lifting piece 112 to support the second locking, so that the height of the second locking piece 42 can be adjusted through the design of the lifting piece 112, thereby raising the mounting surface height of the second locking piece 42 and providing a sufficiently long locking length space for the carrier's fastener, which can avoid the carrier's fastener being too long or the locking height surface being too high, resulting in insufficient locking space between the fastener and the second locking piece 42 or mismatch between the second locking piece 42 and the carrier, thereby improving the connection reliability between the carrier's fastener and the second locking piece 42.

[0082] See also Figure 1 In one embodiment of the present application, the second locking member 42 includes a first connecting segment 421, a second connecting segment 422 and a fixing segment 423; the first connecting segment 421 is connected to the first locking member 41; the second connecting segment 422 is connected to the end of the first connecting segment 421 and is passed through the connecting hole 11a; the fixing segment 423 is connected to the end of the second connecting segment 422 away from the first connecting segment 421, and the outer diameter of the fixing segment 423 is larger than the outer diameters of the first connecting segment 421 and the second connecting segment 422. The lifting member 112 is located between the fixing segment 423 and the first locking member 41, and the fixing segment 423 abuts against the lifting member 112.

[0083] With such a design, the first connecting section 421 can be used to connect with the first locking member 41, and the second connecting member can be inserted into the connecting hole 11a of the upper cover 11, and the fixed section 423 can be used to abut against the lifting member 112. The fixed section 423 is supported by the lifting member 112 to raise the height of the second locking member 42, so that the second locking member 42 can be used to achieve effective connection with the first locking member 41 and the battery case 10, and the lifting of the second locking member 42 is achieved at the same time.

[0084] In some embodiments, the outer diameter of the first connecting segment 421 is smaller than the outer diameter of the second connecting segment 422, and the outer diameter of the second connecting segment 422 is smaller than the outer diameter of the fixing segment 423. In this way, during the installation process, it is convenient for the first connecting segment 421 to smoothly pass through the connecting hole 11a and connect with the first locking member 41, and it is convenient for the second connecting segment 422 to pass through the connecting hole 11a, while making the fixing segment 423 abut against the outer end face of the lifting member 112.

[0085] See also Figure 1 In one embodiment of the present application, the lifting member 112 and the upper cover body 111 are an integral structure.

[0086] Such a design, an integrated structure design can not only make the connection reliability between the lifting member 112 and the upper cover body 111 higher, but also simplify the preparation process.

[0087] In some embodiments, the lifting member 112 includes a first structural member and a second structural member connected along the axial direction, and the outer diameter of the first structural member is larger than the outer diameter of the second structural member, so that the cross-section of the lifting member 112 is T-shaped, which can increase the contact area between the first structural member and the upper cover body 111, so as to increase the connection area between the lifting member 112 and the upper cover body 111, thereby improving the connection reliability between the lifting member 112 and the upper cover body 111.

[0088] See also Figure 1 In one embodiment of the present application, the box beam 30 is configured to separate two groups of battery cell groups, or to separate a battery cell group and an electronic control component, and the battery cell group includes at least one battery cell 20.

[0089] With this design, when some of the multiple battery cells 20 expand, the expansion force acts on the box beams 30 on both sides, causing the box beams 30 to generate a squeezing force that reacts to the battery cells, thereby limiting the expansion of the battery cells 20 and improving the safety performance of the battery.

[0090] See also Figure 1The present application also proposes a mounting structure 40, which includes a first locking member 41 and a second locking member 42; one end of the first locking member 41 is connected to the box beam 30, and the other end of the first locking member 41 abuts against the inner wall of the battery box 10 and is arranged around the connecting hole 11a of the battery box 10; the second locking member 42 is at least partially arranged outside the battery box 10, one end of the second locking member 42 is penetrated through the connecting hole 11a and extends into the battery box 10 to be connected with the first locking member 41, and the end of the second locking member 42 away from the first locking member 41 is provided with an assembly hole 42a, and the assembly hole 42a is configured to cooperate with the fastener of the carrier for connection.

[0091] According to some embodiments of the present application, the present application provides a battery device 100 including a mounting structure 40, see Figure 1 The battery device 100 also includes a battery box 10, a plurality of battery cells 20 arranged in the battery box 10, and a box beam 30; the box beam 30 is configured to separate two groups of battery cells, or to separate a battery cell group and an electronic control component, the battery cell group includes at least one battery cell 20, the upper cover 11 of the battery box 10 is provided with a connecting hole 11a, and the mounting structure 40 includes a first locking member 41 and a second locking member 42; one end of the first locking member 41 is welded to the box beam 30, and a sealing ring 41b is provided between the other end of the first locking member 41 and the inner wall of the upper cover 11, and the sealing ring 41b is arranged around the connecting hole 11a; one end of the second locking member 42 is penetrated through the connecting hole 11a and extends into the battery box 10 to be threadedly connected with the first locking member 41, and a blind hole is provided at the end of the second locking member 42 away from the first locking member 41, and the blind hole is configured to be matched with the fastener of the carrier. The upper cover 11 includes an upper cover body 111 and a lifting member 112 . The upper cover body 111 is provided with a mounting hole. The lifting member 112 is disposed in the mounting hole. The lifting member 112 is provided with a connecting hole 11 a . The lifting member 112 is configured to support the second locking member 42 .

[0092] In the technical solution of the embodiment of the present application, the mounting structure 40 adopted in the technical solution of the present application is connected only by the first locking member 41 and the second locking member 42, one end of the first locking member 41 is directly welded to the box beam 30, and the other end of the first locking member 41 is sealed with the inner wall of the upper cover 11 by a sealing ring 41b, so that a sealing interface is formed between the first locking member 41 and the battery box 10 to improve the sealing of the sealing interface, and the second locking member 42 is used to directly connect the battery box 10 and the first locking member 41. When the battery box 10 is connected to the carrier, the fastener on the carrier can be used to directly lock it on the blind hole of the second locking member 42. Therefore, the mounting structure 40 used in this solution only needs to use the first locking member 41 and the second locking member 42, reducing the use of the bottom sleeve and the adapter sleeve, and simultaneously eliminating the corresponding locking and installation process, and removing the sealing interface between the bottom sleeve and the bottom plate of the battery box 10, involving only one sealing interface, thereby effectively solving the problem of high risk of airtight failure of the battery device 100. In addition, by using the lifting member 112 to support the second locking, the height of the second locking member 42 can be adjusted through the design of the lifting member 112, the installation surface height of the second locking member 42 is raised, and a sufficiently long locking length space is provided for the fastener of the carrier, which can avoid the fastener of the carrier being too long or the locking height surface being too high, resulting in insufficient locking space between the fastener and the second locking member 42 or mismatch between the second locking member 42 and the carrier, thereby improving the connection reliability between the fastener of the carrier and the second locking member 42.

[0093] The present application also proposes an electrical device, which includes a battery device 100. The specific structure of the battery device 100 refers to the above embodiment. Since the electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0094] The above description is only an exemplary embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: The invention comprises a battery box, a plurality of battery cells arranged in the battery box, a box beam and a mounting structure, wherein the battery box is provided with a connecting hole, and the mounting structure comprises: A first locking member, one end of which is connected to the box beam, and the other end of which is in contact with the inner wall of the battery box and is arranged around the connecting hole; The second locking member is at least partially arranged outside the battery case, one end of the second locking member is passed through the connecting hole and extends into the battery case to be connected with the first locking member, and an assembly hole is provided at the end of the second locking member away from the first locking member, and the assembly hole is configured to cooperate with the fastener of the carrier for connection.

2. The battery device according to claim 1, characterized in that An inserting hole is provided at the end of the box beam close to the connecting hole, and an end of the first locking member away from the second locking member is inserted into the inserting hole.

3. The battery device according to claim 1, characterized in that: The first locking member is welded to the box beam.

4. The battery device according to claim 1, wherein: The first locking member is threadably matched with the second locking member.

5. The battery device according to claim 4, characterized in that: The first locking member is a long sleeve, the second locking member is a top sleeve, and the maximum dimension of the long sleeve in the height direction is greater than the maximum dimension of the top sleeve in the height direction; The end of the long sleeve away from the box beam is provided with a threaded hole, the outer wall of one end of the top sleeve is provided with an external thread, and the end of the top sleeve provided with the external thread is inserted into the threaded hole and threadably matched with the threaded hole.

6. The battery device according to any one of claims 1 to 5, characterized in that: A sealing ring is provided at the end of the first locking member away from the box beam, and the sealing ring abuts against the inner wall of the battery box body where the connecting hole is provided.

7. The battery device according to any one of claims 1 to 5, characterized in that: The assembly hole is a blind hole, and the inner wall of the blind hole is provided with an internal thread.

8. The battery device according to any one of claims 1 to 5, characterized in that: The connection hole is arranged on the upper cover of the battery box.

9. The battery device according to claim 8, characterized in that: The upper cover comprises an upper cover body and a lifting member, the upper cover body is provided with a mounting hole, the lifting member is arranged in the mounting hole, the lifting member is provided with the connecting hole, and the lifting member is configured to support the second locking member.

10. The battery device according to claim 9, characterized in that The second locking member comprises: A first connecting section connected to the first locking member; A second connecting section, connected to an end of the first connecting section and passing through the connecting hole; A fixed section is connected to the end of the second connecting section away from the first connecting section, the outer diameter of the fixed section is larger than the outer diameters of the first connecting section and the second connecting section, the lifting member is located between the fixed section and the first locking member, and the fixed section abuts against the lifting member.

11. The battery device according to claim 9, characterized in that: The lifting member and the upper cover body are an integral structure.

12. The battery device according to any one of claims 1 to 5, characterized in that: The box beam is configured to separate two battery cell groups, or to separate a battery cell group and an electronic control component, wherein the battery cell group includes at least one battery cell.

13. A mounting structure, characterized in that: include: A first locking member, one end of which is connected to the box beam, and the other end of which is in contact with the inner wall of the battery box and is arranged around the connecting hole of the battery box; The second locking member is at least partially arranged outside the battery case, one end of the second locking member is passed through the connecting hole and extends into the battery case to be connected with the first locking member, and an assembly hole is provided at the end of the second locking member away from the first locking member, and the assembly hole is configured to cooperate with the fastener of the carrier for connection.

14. An electrical device, characterized in that: A battery device comprising the battery device as claimed in any one of claims 1 to 12.

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