Mounting structure, battery apparatus, and electric device
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-01-15
- Publication Date
- 2026-08-13
Smart Images
Figure CN2026072675_13082026_PF_FP_ABST
Abstract
Description
Mounting structure, battery device and electric equipment
[0001] Related applications
[0002] The present application claims priority to Chinese Patent Application No. 202520196023.8, filed on February 8, 2025, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD
[0003] The present application relates to the technical field of batteries, in particular to a mounting structure, a battery device and an electric equipment. BACKGROUND
[0004] Battery devices are often used in new energy vehicles to provide driving power for new energy vehicles. With the continuous development of new energy technology, the strength and reliability requirements of new energy vehicles are becoming higher and higher, and the battery device is an important component of new energy vehicles. Therefore, the assembly requirements between the battery device and the vehicle are also becoming higher and higher.
[0005] In related technologies, the battery device and the vehicle fixing points are mostly distributed around the battery device and in the middle part. The middle part fixing points are connected by using a mounting structure. However, the current mounting structure has a large number of components and a large number of assembly processes, and involves two sealing interfaces, which leads to a high risk of air tightness failure of the battery device. SUMMARY
[0006] In view of the above problems, the present application provides a mounting structure, a battery device and an electric equipment, aiming to solve the problem of high risk of air tightness failure of the battery device.
[0007] The present application provides a battery device, which comprises a battery box, a plurality of battery monomers arranged in the battery box, a box beam and a mounting structure. The battery box is provided with a connecting hole. The mounting structure comprises a first locking member and a second locking member. One end of the first locking member is connected to the box beam, and the other end of the first locking member abuts against 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 box. One end of the second locking member is arranged in the connecting hole and extends into the battery box to be connected with the first locking member. The end of the second locking member away from the first locking member is provided with an assembly hole configured to be connected with a fastener of a carrier.
[0008] In the technical scheme of the embodiment of the application, the mounting structure of the 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, the other end of the first locking member abuts against the inner wall of the battery box, and is arranged around the connecting hole, so that a sealing interface is formed between the first locking member and the battery box, and the second locking member is used to directly connect the battery box and the first locking member. When the battery box is connected to the carrier, the fastener on the carrier can be directly locked on the assembly hole of the second locking member. Therefore, the mounting structure used in the scheme only needs to use the first locking member and the second locking member, reduces the use of the bottom sleeve and the adapter sleeve, synchronously eliminates the corresponding locking installation process, and removes the sealing interface between the bottom sleeve and the bottom plate of the battery box, and only one sealing interface is involved, thereby effectively solving the problem of high risk of air tightness failure of the battery device.
[0009] In some embodiments, the end of the box beam close to the connecting hole is provided with a insertion hole, and the 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, so as to improve the connection reliability between the first locking member and the box beam.
[0010] In some embodiments, the first locking member is welded to the box beam. Such a design can not only simplify the operation, but also make the connection between the first locking member and the box beam more reliable by welding the first locking member to the box beam.
[0011] In some embodiments, the first locking member and the second locking member are threadedly connected. Such a design can make the operation more simple by directly screwing the first locking member after the first locking member is inserted into the battery box from the connecting hole of the battery box.
[0012] In some embodiments, the first locking member is a long sleeve, the second locking member is a top sleeve, the maximum size of the long sleeve in the height direction is greater than the maximum size 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 threadedly connected with the threaded hole. Such a design can make one end of the top sleeve have a stud structure, so that the top sleeve is inserted into the threaded hole of the long sleeve from the height direction after the top sleeve passes through the connecting hole of the battery box, and the top sleeve is screwed, so that one end of the top sleeve is screwed into the threaded hole of the long sleeve, so that the first locking member and the second locking member are threadedly connected.
[0013] In some embodiments, the first locking member is provided with a sealing ring away from the end of the box beam, and the sealing ring abuts the inner wall of the battery box provided with the connecting hole. Such a design can improve the sealing between the first locking member and the battery box by adding the sealing ring, so as to prevent the internal space of the battery box from being communicated with the connecting hole through the gap between the first locking member and the battery box, and then communicated with the outside through the connecting hole, thereby improving the air tightness of the battery box.
[0014] In some embodiments, the assembly hole is a blind hole, and the inner wall of the blind hole is provided with an internal thread. Such a design allows the fastener on the carrier to be directly inserted into the blind hole of the second locking member and threadedly connected with the internal thread on the blind hole when the battery box is mounted on the carrier, so that the battery box can be mounted on the carrier. Since the assembly hole is a blind hole, the internal space of the battery box cannot be communicated with the outside through the assembly hole, thereby improving the air tightness of the battery box.
[0015] In some embodiments, the connecting hole is provided on the upper cover of the battery box. Such a design allows the fastener on the carrier to be directly inserted into the assembly hole of the second locking member from top to bottom when the battery box is mounted on the carrier, thereby facilitating the mounting of the battery device on the carrier.
[0016] 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, and the lifting member is arranged in the mounting hole and is provided with a connecting hole. 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 by the design of the lifting member, the mounting surface height of the second locking member is raised, and a sufficient locking length space is provided for the fastener of the carrier, so that the fastener of the carrier is not too long or the locking height surface is too high, which can avoid the insufficient locking space between the fastener and the second locking member or the 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.
[0017] In some embodiments, the second locking member includes a first connecting section, a second connecting section, and a fixing section. The first connecting section is connected with the first locking member. The second connecting section is connected to the end of the first connecting section and penetrates the connecting hole. The fixing section is connected to the end of the second connecting section away from the first connecting section. The outer diameter of the fixing section is greater than the outer diameters of the first connecting section and the second connecting section. The lifting member is located between the fixing section and the first locking member, and the fixing section abuts the lifting member. Such a design can connect the first connecting section with the first locking member, penetrate the second connecting section in the connecting hole of the upper cover, and abut the fixing section on the lifting member. The height of the second locking member is raised by supporting the fixing section with the lifting member, so that the second locking member can be effectively connected with the first locking member and the battery box, and the second locking member is lifted.
[0018] In some embodiments, the lifting member is integrated with the upper cover body. Such design, the integrated design not only can make the connection between the lifting member and the upper cover body higher reliability, but also can simplify the preparation process.
[0019] In some embodiments, the box beam is configured to separate two groups of battery monomer groups, or separate the battery monomer group and the electric control assembly, the battery monomer group comprising at least one battery monomer. Such design, in the case of part of the plurality of battery monomers appearing swelling phenomenon, the swelling force acts on the box beams on both sides, so that the box beams generate a counter-acting extrusion force on the battery monomers, so as to limit the swelling amount of the battery monomers, thereby improving the safety performance of the battery.
[0020] The application also provides a mounting structure, which comprises 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 arranged through the connecting hole and extends into the battery box to connect with the first locking member, and the end of the second locking member away from the first locking member is provided with an assembly hole configured to be connected with the fastener of the carrier.
[0021] The application also provides a power consumption device comprising the above-mentioned battery device.
[0022] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, and can be implemented according to the content of the specification, and in order to make other purposes, features and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, without creative labor, other drawings can also be obtained from the structure shown in these drawings.
[0024] Fig. 1 is a partial structure sectional view of an embodiment of the battery device of the application;
[0025] Fig. 2 is an exploded view of an embodiment of the battery device of the application;
[0026] Fig. 3 is a structural schematic view of an embodiment of the vehicle of the application.
[0027] Explanation of reference numerals:
[0028] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in conjunction with the drawings. DETAILED DESCRIPTION
[0029] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the terms "include" and "have" and any variations thereof in the specification and in the claims and the above description of the drawings are intended to cover the inclusion not the exclusion of one or more elements.
[0031] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.
[0032] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0033] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).
[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or component must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.
[0035] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "linking", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two components or interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0036] The battery device mentioned in the art is also called battery, which can be divided into primary battery and rechargeable battery according to whether it can be charged. The common types of rechargeable batteries at present are: lead-acid battery, nickel-hydrogen battery and lithium-ion battery. Lithium-ion battery is widely used in pure electric vehicles and hybrid electric vehicles at present. The capacity of lithium-ion battery used for such use is relatively low, but has larger output, charging current and longer service life, but the cost is higher.
[0037] The battery described in the embodiments of the present application refers to a rechargeable battery. Hereinafter, the embodiments disclosed in the present application will be mainly described taking 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 appropriate devices to power the devices.
[0038] The battery mentioned in the embodiments disclosed in the present application refers to a single physical module including one or more battery monomers to provide a predetermined voltage and capacity. The battery monomer is the basic unit in the battery, which can be generally divided into cylindrical battery monomer, cuboid battery monomer and soft pack battery monomer according to the packaging mode. Hereinafter, the embodiments will be mainly described around the cuboid battery monomer. It should be understood that the embodiments described hereinafter are also applicable to cylindrical battery monomer or soft pack battery monomer in some aspects.
[0039] The battery monomer includes positive electrode sheet, negative electrode sheet, electrolyte and separator. The lithium-ion battery monomer mainly works by the movement of lithium ions between the positive electrode sheet and the negative electrode sheet. The thin film structure of the three layers of materials in the cylindrical battery monomer is wound into a cylindrical electrode assembly, while the thin film structure is wound or stacked into an electrode assembly with a substantially cuboid shape in the cuboid battery monomer.
[0040] In a general battery cell structure, a battery cell includes a case, an electrode assembly, and an electrolyte. The electrode assembly is accommodated in the case of the battery cell, and includes a positive electrode tab, a negative electrode tab, and a separator. The case includes a housing and an opening. The end cap is disposed at the opening to close the accommodation cavity. In addition to the electrode assembly, the electrolyte is also accommodated in the accommodation cavity. The positive electrode tab and the negative electrode tab in the electrode assembly include a tab. To avoid fusing by a large current, the number of positive electrode tabs is plural and stacked together, and the number of negative electrode tabs is plural and stacked together. The tab is electrically connected to an electrode terminal located outside the battery cell through a connecting member, and the electrode terminal generally includes a positive electrode terminal and a negative electrode terminal. For a cuboid battery cell, the electrode terminal is generally provided in the end cap portion. A plurality of battery cells are connected in series and / or parallel together via the electrode terminal to be applied to various application occasions.
[0041] In some high-power application occasions such as electric vehicles, the application of the battery includes three levels: battery cell, battery module, and battery. The battery module is formed by electrically connecting a certain number of battery cells together and putting them into 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 loaded into the electric vehicle. The battery generally includes a battery box for packaging one or more battery cells.
[0042] In recent years, new energy vehicles have made a leap in development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable important role. The battery is composed of a battery box and a plurality of battery cells accommodated in the battery box. Among them, the battery as a core part of new energy vehicles has higher requirements in safety. At present, the mechanical safety of the power battery during use is one of the battery safety problems that consumers are generally concerned about.
[0043] The battery provided by the embodiments of the present application can be a power source for an electric device. The electric device can be a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric vehicle, a ship, a spacecraft, an electric toy, and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric vehicle toy, an electric ship toy, and an electric plane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer.
[0044] The following embodiments take a vehicle 1000 as an example for convenience of description.
[0045] For example, FIG. 3 is a structural schematic diagram of an embodiment of a vehicle 1000 of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle. The vehicle 1000 can be provided with a battery device 100, a controller 200, and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be arranged at the bottom, the front, or the rear of the vehicle 1000. The battery device 100 can be used to supply power to the vehicle 1000. For example, the battery device 100 can be used as an operating power source of the vehicle 1000, and can be used for the circuit system of the vehicle 1000, such as the power demand for starting, navigation, and operation of the vehicle 1000. In another embodiment of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.
[0046] For example, please refer to FIG. 2, which is an exploded structural diagram of the battery device 100 provided by some embodiments of the present application. The battery device 100 includes a battery box 10 and a battery cell 20. The battery box 10 has a containing space for containing the battery cell 20. The battery box 10 can adopt various structures. In some embodiments, the battery box 10 can include a first part 10a and a second part 10b. The first part 10a and the second part 10b are overlapped with each other, and together define the containing space for containing the battery cell 20. The second part 10b can be a hollow structure with one end open, and the first part 10a can be a plate structure. The first part 10a is overlapped with the open side of the second part 10b, so that the first part 10a and the second part 10b together define the containing space. Alternatively, the first part 10a and the second part 10b can both be hollow structures with one side open, and the open side of the first part 10a is overlapped with the open side of the second part 10b. Of course, the battery box 10 formed by the first part 10a and the second part 10b can have various shapes, such as a cylinder or a cuboid.
[0047] In the battery device 100, the battery cell 20 can be one or multiple. When the battery device 100 has multiple battery cells 20, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that some of the multiple battery cells 20 are connected in series and some are connected in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells 20 is contained in the battery box 10. Alternatively, the multiple battery cells 20 can be first connected in series, in parallel, or in a mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is contained in the battery box 10.
[0048] Battery devices are often used in new energy vehicles to provide driving power for new energy vehicles. With the continuous development of new energy technology, the strength and reliability requirements of new energy vehicles are becoming higher and higher, and the battery device is an important component of new energy vehicles, so the assembly requirements between the battery device and the vehicle are also becoming higher and higher.
[0049] In the related art, the battery device and the vehicle fixing points are mostly distributed around the battery device and in the middle part, and the fixing points in the middle part are connected by a mounting structure composed of four parts: a top sleeve, an adapter sleeve, a long sleeve, and a bottom sleeve, which are fixed by threads on the sleeves. The combination of the bottom sleeve and the long sleeve is responsible for the sealing interface with the bottom (water-cooled plate), and the combination of the top sleeve and the adapter sleeve is responsible for the sealing interface with the top (upper cover). Therefore, the current mounting structure has many components and assembly processes, involves two sealing interfaces, and leads to a high risk of air tightness failure of the battery device.
[0050] Based on the above problems, the present application proposes a battery device 100 to solve the problem of high risk of air tightness failure of the battery device 100. The following will be described in detail in combination with specific drawings and embodiments.
[0051] Please refer to FIG. 1, in an embodiment of the present application, the battery device 100 includes a battery box 10, a plurality of battery monomers 20 arranged in the battery box 10, a box beam 30, and a mounting structure 40, the battery box 10 is provided with a connecting hole 11a, 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, 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; the second locking member 42 is at least partially arranged outside the battery box 10, one end of the second locking member 42 is arranged in the connecting hole 11a and extends into the battery box 10 to connect 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 configured to be connected with the fastener of the carrier.
[0052] The box beam 30 refers to a structure for separating the internal space of the battery box 10, which can also be called an expansion beam. Optionally, at least two expansion beams are arranged in the battery box 10, and the battery monomers 20 are clamped between the at least two expansion beams to clamp the battery monomers 20 by the at least two expansion beams.
[0053] The expansion beam is a component for limiting the expansion amount of the battery cell 20. The expansion beam can be a metal piece. It can be understood that the material of the expansion beam is metal, for example, aluminum, aluminum alloy, iron, stainless steel, copper, etc., which is not specifically limited here. Of course, the expansion beam can also be a non-metal piece. It can be understood that the material of the expansion beam is non-metal, for example, plastic, carbon fiber, wood, etc., which is not specifically limited here. Moreover, when the expansion beam is provided with at least two, the materials of the at least two expansion beams can be the same or different.
[0054] In the case where the expansion phenomenon occurs in part of the plurality of battery cells 20, the expansion force acts on the expansion beams on both sides, so that the expansion beams generate a pressing force acting on the battery cell 20, so as to limit the expansion amount of the battery cell 20, thereby improving the safety performance of the battery.
[0055] The mounting structure 40 refers to a structure for mounting the battery box 10 on the carrier, as a middle fixing point of the battery box 10.
[0056] The first locking piece 41 refers to a structural piece for locking on the box beam 30. The first locking piece 41 can be a connecting sleeve, or a nut, a screw, etc. locking piece, as long as it can be connected to the box beam 30 and can cooperate with the second locking piece 42. The first locking piece 41 can be connected to the box beam 30 by welding, threaded connection, clamping, bonding, etc.
[0057] The second locking piece 42 refers to a structure for locking on the battery box 10. The second locking piece 42 can be a connecting sleeve, or a nut, a screw, etc. locking piece, as long as it can be connected to the battery box 10 and can cooperate with the first locking piece 41. The second locking piece 42 can be connected to the first locking piece 41 by threaded connection, clamping, etc.
[0058] The fastener is a connecting structural piece for connecting the carrier and the battery box 10, which can be a bolt.
[0059] In actual application, the connecting hole 11a can be provided on the upper cover 11 of the battery box 10, or on the side wall of the battery box 10.
[0060] In summary, in the technical scheme of the embodiment of the application, the mounting structure 40 used in the technical scheme of the 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, 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, so that a sealing interface is formed between the first locking member 41 and the battery box 10, 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 directly locked on the assembly hole 42a of the second locking member 42. Therefore, the mounting structure 40 used in the present scheme only needs to use the first locking member 41 and the second locking member 42, which reduces the use of the bottom sleeve and the adapter sleeve, synchronously eliminates the corresponding locking and mounting process, and removes the sealing interface between the bottom sleeve and the bottom plate of the battery box 10, and only involves one sealing interface, thereby effectively solving the problem of high risk of air tightness failure of the battery device 100.
[0061] Referring to FIG. 1, in an embodiment of the application, the end of the box beam 30 close to the connecting hole 11a is provided with a insertion hole 31, and one end of the first locking member 41 away from the second locking member 42 is inserted into the insertion hole 31.
[0062] In the embodiment, the box beam 30 can be a solid beam or a profiled beam. When the box beam 30 is a solid beam, the insertion hole 31 on the box beam 30 can be a hole opened at the end of the box beam 30; when the box beam 30 is a profiled beam, the insertion hole 31 on the box beam 30 can be a cavity of the profiled beam.
[0063] 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.
[0064] Referring to FIG. 1, in an embodiment of the application, the first locking member 41 is welded to the box beam 30.
[0065] Such a design can not only simplify the operation, but also make the connection between the first locking member 41 and the box beam 30 more reliable by using welding to connect the first locking member 41 to the box beam 30.
[0066] In practical applications, the first locking member 41 can be welded to the box beam 30 using various welding methods such as spot welding, arc welding, and laser welding. Of course, in one embodiment, the first locking member 41 can be connected to the box beam 30 using spot welding, which improves connection reliability while reducing welding costs. For example, multiple welds 32 are formed between the first locking member 41 and the insertion hole 31 of the box beam 30. These welds 32 can be spaced apart along the axial direction of the first locking member 41, and spot welding can be performed at each weld 32 to create multiple welding points between the first locking member 41 and the box beam 30.
[0067] Please refer to Figure 1. In one embodiment of this application, the first locking member 41 and the second locking member 42 are threadedly engaged.
[0068] With this design, during installation, the first locking member 41 can be inserted into the battery box 10 through the connection hole 11a, and then the first locking member 41 can be directly turned to lock the first locking member 41 onto the second locking member 42, making the operation simpler.
[0069] In practical applications, 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 engage 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 engage with the threaded hole 41a of the second locking member 42.
[0070] Please refer to Figure 1. In one embodiment of this 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. The end of the long sleeve away from the box beam 30 is provided with a threaded hole 41a. One end of the top sleeve is provided with an external thread on its outer wall. The end of the top sleeve with the external thread is inserted into the threaded hole 41a and threadedly engaged with the threaded hole 41a.
[0071] This design allows one end of the top sleeve to have a stud-like structure. After passing through the connection hole 11a of the battery housing 10, the top sleeve is inserted into the threaded hole 41a of the long sleeve from the height direction. Tightening the top sleeve screws the stud-like end into the threaded hole 41a of the long sleeve, thus achieving a threaded connection between the first locking member 41 and the second locking member 42. Furthermore, 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. This allows the threaded hole 41a of the first locking member 41 to be sufficiently long. The insertion of the top sleeve into the threaded hole 41a of the long sleeve from the height direction after passing through the connection hole 11a of the battery housing 10 results in higher locking reliability between the second locking member 42 and the first locking member 41.
[0072] Please refer to Figure 1. In one embodiment of this application, the end of the first locking member 41 away from the box beam 30 is provided with a sealing ring 41b, and the sealing ring 41b abuts against the inner wall of the battery box 10 where the connection hole 11a is provided.
[0073] The sealing ring 41b refers to the ring used to seal the gap between the end of the first locking member 41 and the inner wall of the battery box 10 where the connection hole 11a is provided, so as to seal the sealing interface between the first locking member 41 and the battery box 10. The sealing ring 41b can be a silicone ring or a rubber ring.
[0074] With this design, the addition of the sealing ring 41b can improve the sealing between the first locking member 41 and the battery box 10, so as to prevent the internal space of the battery box 10 from communicating with the connection hole 11a through the gap between the first locking member and the battery box 10, and then communicating with the outside through the connection hole 11a, thereby improving the airtightness of the battery box 10.
[0075] Please refer to Figure 1. In one embodiment of this application, the assembly hole 42a is a blind hole, and the inner wall of the blind hole is provided with internal threads.
[0076] This design allows the battery housing 10 to be installed on the carrier. Fasteners on the carrier can be directly inserted into the blind hole of the second locking member 42, and threaded into the internal thread of the blind hole, thus installing the battery housing 10 onto the carrier. Since the mounting hole 42a is a blind hole, the internal space of the battery housing 10 is not connected to the outside through the mounting hole 42a, improving the airtightness of the battery housing 10.
[0077] Please refer to Figure 1. In one embodiment of this application, the connection hole 11a is provided on the upper cover 11 of the battery box 10.
[0078] In this embodiment, the connecting hole 11a is located at the position of the upper cover 11 corresponding to the box beam 30, so that the connecting hole 11a is 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.
[0079] This design, by placing the connection hole 11a on the top cover 11, allows the fasteners on the carrier to be directly inserted into the assembly hole 42a of the second locking member 42 from top to bottom when the battery box 10 is installed on the carrier, making it easier to install the battery device 100 on the carrier.
[0080] Please refer to Figure 1. In one embodiment of this 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 disposed 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.
[0081] The lifting member 112 is used to support the second locking member 42, thereby raising 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 has a sleeve-like structure. The lifting member 112 can be an integral structure with the upper cover body 111, or it can be a separate structure from the upper cover body 111, and can be connected to the upper cover body 111 by means of welding, bonding, threaded connection, etc.
[0082] This design, by using a lifting member 112 to support the second locking element, allows for adjustment of the height of the second locking element 42. This raises the mounting surface height of the second locking element 42 and provides sufficient locking length space for the carrier's fasteners. This avoids situations where the carrier's fasteners are too long or the locking height is too high, resulting in insufficient locking space between the fasteners and the second locking element 42 or mismatch between the second locking element 42 and the carrier. As a result, the connection reliability between the carrier's fasteners and the second locking element 42 is improved.
[0083] Please refer to Figure 1. In one embodiment of this 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 passes 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. The outer diameter of the fixing segment 423 is larger than the outer diameter 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.
[0084] This design allows for connection between the first connecting section 421 and the first locking member 41, with the second connecting member passing through the connecting hole 11a of the upper cover 11. Simultaneously, the fixing section 423 abuts against the lifting member 112, and the lifting member 112 supports the fixing section 423 to raise the height of the second locking member 42. Thus, the second locking member 42 can be effectively connected to the first locking member 41 and the battery box 10, while also achieving the lifting of the second locking member 42.
[0085] 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. This facilitates the first connecting segment 421 to pass smoothly through the connecting hole 11a and connect with the first locking member 41 during installation, and also facilitates the second connecting segment 422 to pass through the connecting hole 11a, while the fixing segment 423 abuts against the outer end face of the lifting member 112.
[0086] Please refer to Figure 1. In one embodiment of this application, the lifting member 112 and the upper cover body 111 are an integral structure.
[0087] This integrated design not only makes the connection between the lifting component 112 and the upper cover body 111 more reliable, but also simplifies the manufacturing process.
[0088] In some embodiments, the lifting member 112 includes a first structural member and a second structural member connected along the axial direction. 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. This increases the contact area between the first structural member and the upper cover body 111, thereby increasing the connection area between the lifting member 112 and the upper cover body 111, and thus improving the connection reliability between the lifting member 112 and the upper cover body 111.
[0089] Please refer to Figure 1. In one embodiment of this application, the box beam 30 is configured to separate two sets of battery cell groups, or to separate battery cell groups and electronic control components. The battery cell group includes at least one battery cell 20.
[0090] With this design, if 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 compressive force on the battery cells, thereby limiting the expansion of the battery cells 20 and improving the safety performance of the battery.
[0091] Referring to Figure 1, this 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 connection hole 11a of the battery box 10. The second locking member 42 is at least partially disposed outside the battery box 10. One end of the second locking member 42 passes through the connection hole 11a and extends into the battery box 10 to connect with the first locking member 41. The end of the second locking member 42 away from the first locking member 41 is provided with an assembly hole 42a, which is configured to cooperate with the fasteners of the carrier.
[0092] According to some embodiments of this application, this application provides a battery device 100 including a mounting structure 40. Referring to FIG1, the battery device 100 further includes a battery housing 10, a plurality of battery cells 20 disposed within the battery housing 10, and a housing beam 30; the housing beam 30 is configured to separate two groups of battery cell groups, or to separate a battery cell group and an electronic control assembly. The battery cell group includes at least one battery cell 20. The upper cover 11 of the battery housing 10 is provided with a connection hole 11a. The mounting structure 40 includes a first... A first locking member 41 and a second locking member 42 are provided. One end of the first locking member 41 is welded to the housing 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. The sealing ring 41b surrounds the connecting hole 11a. One end of the second locking member 42 passes through the connecting hole 11a and extends into the battery housing 10 to be threadedly connected with the first locking member 41. The end of the second locking member 42 away from the first locking member 41 is provided with a blind hole, which is configured to cooperate with the fasteners 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, and the lifting member 112 is provided in the mounting hole. The lifting member 112 is provided with a connecting hole 11a and is configured to support the second locking member 42.
[0093] In the technical solution of this application embodiment, the mounting structure 40 is connected only through 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 using a sealing ring 41b, so that a sealed interface is formed between the first locking member 41 and the battery box 10 to improve the sealing performance of the sealed interface. 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 fasteners on the carrier can be directly fastened to the blind hole of the second locking member 42. Therefore, the mounting structure 40 used in this solution only requires the first locking member 41 and the second locking member 42, reducing the use of the bottom sleeve and the adapter sleeve, 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 airtightness failure risk of the battery device 100. In addition, by using the lifting member 112 to support the second locking member, the height of the second locking member 42 can be adjusted through the design of the lifting member 112, raising the mounting surface height of the second locking member 42, and providing a sufficiently long locking length space for the carrier's fasteners, it can avoid the carrier's fasteners being too long or the locking height surface being too high, resulting in insufficient locking space between the fasteners and the second locking member 42 or mismatch between the second locking member 42 and the carrier, thereby improving the connection reliability between the carrier's fasteners and the second locking member 42.
[0094] The application also provides a power utilization device, which comprises the battery device 100, and the specific structure of the battery device 100 is referred to the above-mentioned embodiments. Since the power utilization device adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.
[0095] The above merely describes exemplary embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which is made under the technical concept of the application, according to the content of the specification and drawings of the application, is included in the patent protection scope of the application.
Claims
1. A battery device, wherein, The battery enclosure includes a battery housing, several battery cells disposed within the battery housing, housing beams, and a mounting structure. The battery housing is provided with connection holes, and the mounting structure includes: A first locking member, one end of which is connected to the housing beam, and the other end of which abuts against the inner wall of the battery housing and is arranged around the connection hole; The second locking member is at least partially disposed outside the battery box. One end of the second locking member passes through the connection hole and extends into the battery box to connect with the first locking member. The end of the second locking member away from the first locking member is provided with an assembly hole, which is configured to cooperate with the fastener of the carrier.
2. The battery device as claimed in claim 1, wherein, The end of the box beam near the connecting hole is provided with an insertion hole, and the end of the first locking member away from the second locking member is inserted into the insertion hole.
3. The battery device as claimed in claim 1, wherein, The first locking element is welded to the box beam.
4. The battery device as claimed in claim 1, wherein, The first locking member and the second locking member are threaded together.
5. The battery device as claimed in claim 4, wherein, 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. The long sleeve has a threaded hole at the end away from the box beam, and the outer wall of one end of the top sleeve has an external thread. The threaded end of the top sleeve is inserted into the threaded hole and is threadedly engaged with the threaded hole.
6. The battery device according to any one of claims 1 to 5, wherein, The first locking member has a sealing ring at its end away from the housing beam, and the sealing ring abuts against the inner wall of the battery housing where the connection hole is located.
7. The battery device according to any one of claims 1 to 5, wherein, The assembly hole is a blind hole, and the inner wall of the blind hole is provided with internal threads.
8. The battery device according to any one of claims 1 to 5, wherein, The connection hole is located on the top cover of the battery box.
9. The battery device as claimed in claim 8, wherein, 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 disposed 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 as claimed in claim 9, wherein, The second locking element includes: The first connecting segment is connected to the first locking member; The second connecting segment is connected to the end of the first connecting segment and passes 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 as claimed in claim 9, wherein, The lifting component and the upper cover body are an integral structure.
12. The battery device according to any one of claims 1 to 5, wherein, The box beam is configured to separate two groups of battery cells, or to separate a battery cell group and an electronic control assembly, wherein the battery cell group includes at least one of the battery cells.
13. A mounting structure, wherein, include: The first locking member has one end connected to the box beam and the other end abutting against the inner wall of the battery box and arranged around the connection hole of the battery box. The second locking member is at least partially disposed outside the battery box. One end of the second locking member passes through the connection hole and extends into the battery box to connect with the first locking member. The end of the second locking member away from the first locking member is provided with an assembly hole, which is configured to cooperate with the fastener of the carrier.
14. An electrical appliance, wherein, Includes the battery device as described in any one of claims 1 to 12.