Battery box body structure and electric vehicle

Abstract

The utility model provides a battery box structure and an electric vehicle, and relates to the technical field of electric vehicles. The battery box body structure comprises a box body, a connecting assembly and a lifting lug, and the box body comprises a frame body and a bottom plate; the connecting assembly comprises an inner reinforcing plate, an outer reinforcing plate, a threaded sleeve and a fixing screw, the frame body is provided with a through hole, the inner reinforcing plate is provided with a first mounting hole, the outer reinforcing plate is provided with a second mounting hole, the inner reinforcing plate is fixed to the frame body, the first mounting hole is aligned to the through hole, the outer reinforcing plate is fixed to the frame body, and the second mounting hole is aligned to the through hole. The threaded sleeve penetrates through the through hole, the first mounting hole and the second mounting hole, one end of the threaded sleeve is fixed to the inner reinforcing plate, the other end of the threaded sleeve is fixed to the outer reinforcing plate, the lifting lug is provided with a fixing hole, and the fixing screw penetrates through the fixing hole to be in threaded connection with the threaded sleeve so as to fixedly connect the lifting lug to the frame body. According to the battery box body structure, the connecting strength of the lifting lugs and the box body can be enhanced, and the lifting lugs and the frame body can be quickly assembled and disassembled.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a battery box structure and an electric vehicle. Background Art

[0002] As a key component of new energy vehicles, electric vehicles are experiencing significant technological development and industrialization. The battery, the "heart" of an electric vehicle, directly impacts its range, power output, and user experience. Considering the overall performance and safety of electric vehicles, most battery-powered vehicles utilize battery boxes to house the batteries and connect them to the vehicle's body.

[0003] An existing battery box structure has a battery storage space inside the box, and lugs welded to the outside of the box frame. The lugs are fixed to the body structure of the electric vehicle through the lugs, thereby allowing the battery box to be installed on the body of the electric vehicle. However, the connection strength between the box frame and the lugs is relatively low, making them prone to breakage. Utility Model Content

[0004] The embodiments of the present application provide a battery box structure and an electric vehicle, which are used to solve the problem that the connection strength between the box frame and the lifting lug of the existing battery box structure is low and prone to breakage.

[0005] The present invention provides a battery box structure, comprising:

[0006] The box body includes a frame and a bottom plate, wherein the frame and the bottom plate are arranged to form a receiving cavity, and the receiving cavity is used to place the battery;

[0007] The connecting assembly and the lifting ear, the connecting assembly includes an inner reinforcing plate, an outer reinforcing plate, a threaded sleeve and a fixing screw, the frame body is provided with a through hole extending in a horizontal direction and passing through the frame body, the inner reinforcing plate is provided with a first mounting hole, the outer reinforcing plate is provided with a second mounting hole, the inner reinforcing plate is fixed to one end of the frame body close to the accommodating cavity and the first mounting hole is aligned with the through hole, the outer reinforcing plate is fixed to one end of the frame body away from the accommodating cavity and the second mounting hole is aligned with the through hole, the threaded sleeve passes through the through hole, the first mounting hole and the second mounting hole, and one end of the threaded sleeve is fixed to the inner reinforcing plate, and the other end is fixed to the outer reinforcing plate, the lifting ear is provided with a fixing hole, the fixing screw passes through the fixing hole and is threadedly connected to the threaded sleeve to fix the lifting ear to the frame body.

[0008] In one possible implementation, the battery box structure provided in the embodiment of the present application further includes:

[0009] The reinforcing beam is a hollow structure, and the reinforcing beam is placed in the frame and welded to the frame.

[0010] In a possible implementation, in the battery box structure provided by an embodiment of the present application, a plurality of plug welding holes are provided at one end of the frame away from the accommodating cavity, and the reinforcing beam is welded to the frame through the plug welding holes.

[0011] In one possible implementation, the battery box structure provided in the embodiment of the present application further includes:

[0012] A sealing plate is sealed on one end of the frame and is fixed to the frame by welding.

[0013] In one possible implementation, in the battery box structure provided in an embodiment of the present application, the lifting ear includes a fixing portion and a connecting portion distributed in an L-shape, the fixing portion is used to be fixedly connected to the frame, the connecting portion is extended toward one end away from the frame, and the connecting portion is used to be fixedly connected to the vehicle body structure.

[0014] In a possible implementation, in the battery box structure provided in an embodiment of the present application, the fixing portion is provided with an avoidance groove, and the threaded sleeve is provided at one end of the outer reinforcing plate and inserted into the avoidance groove.

[0015] In a possible implementation, in the battery box structure provided in an embodiment of the present application, the lifting ear is provided with a reinforcing rib, one end of the reinforcing rib is provided at the fixing portion, and the other end is provided at the connecting portion.

[0016] In a possible implementation, in the battery box structure provided in an embodiment of the present application, the connecting portion is provided with a connecting hole extending in a vertical direction, and a fastening bolt is passed through the connecting hole to fix the connecting portion to the vehicle body structure.

[0017] In one possible implementation, the battery box structure provided in an embodiment of the present application comprises two first frames extending along the length direction of the box and arranged in parallel, and two second frames extending along the width direction of the box and arranged in parallel, a plurality of lifting ears are configured, a plurality of connecting components are configured, and a plurality of the lifting ears are respectively fixed to the two first frames through a plurality of connecting components.

[0018] An embodiment of the present application further provides an electric vehicle, comprising a vehicle body structure and the above-mentioned battery box structure, wherein the battery box structure is fixedly mounted on the vehicle body structure.

[0019] The embodiment of the present application provides a battery box structure and an electric vehicle, the battery box structure comprising a box, a connecting assembly, and a lifting lug. The box comprises a frame and a bottom plate, the frame and the bottom plate enclosing a receiving cavity for placing batteries; the connecting assembly comprises an inner reinforcing plate, an outer reinforcing plate, a threaded sleeve, and a fixing screw; the frame is provided with a through hole extending in a horizontal direction and passing through the frame; the inner reinforcing plate is provided with a first mounting hole; the outer reinforcing plate is provided with a second mounting hole; the inner reinforcing plate is fixed to one end of the frame close to the receiving cavity, and the first mounting hole is aligned with the through hole; the outer reinforcing plate is fixed to one end of the frame away from the receiving cavity, and the second mounting hole is aligned with the through hole; the threaded sleeve is provided with the through hole, the first mounting hole, and the second mounting hole; one end of the threaded sleeve is fixed to the inner reinforcing plate, and the other end is fixed to the outer reinforcing plate; the lifting lug is provided with a fixing hole; the fixing screw is provided with the fixing hole and is threadedly connected to the threaded sleeve to fix the lifting lug to the frame. This battery case structure significantly enhances the connection strength between the lifting lug and the case by fixing the inner and outer reinforcing plates and threaded sleeves to the frame and securing the lifting lug to the frame with setscrews. Furthermore, securing the lifting lug to the frame with the threaded sleeve and setscrews facilitates quick installation and removal, allowing for quick replacement if the lifting lug becomes deformed and stops functioning properly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the present application, and together with the description, are used to explain the principles of the embodiments of the present application.

[0021] Figure 1 A schematic structural diagram of a battery box structure provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0023] Figure 3 A schematic structural diagram of a lifting lug provided in an embodiment of the present application from a first perspective;

[0024] Figure 4 A schematic structural diagram of a lifting ear provided in an embodiment of the present application from a second perspective;

[0025] Figure 5 A schematic structural diagram of a threaded sleeve provided in an embodiment of the present application;

[0026] Figure 6 A schematic structural diagram of an outer reinforcement plate provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram of the partial structure of the reinforcement beam provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1- box body; 11- frame body; 111- plug welding hole; 12- bottom plate;

[0030] 21 - inner reinforcement plate; 211 - first mounting hole; 22 - outer reinforcement plate; 221 - second mounting hole; 23 - threaded sleeve; 231 - internal thread; 232 - brim; 24 - fixing screw;

[0031] 3-lifting ear; 31-fixing hole; 32-avoidance groove; 33-reinforcement rib; 34-connection hole;

[0032] 4-reinforcement beam; 41-third mounting hole;

[0033] 5-Seal the board.

[0034] The above drawings illustrate specific embodiments of the present invention, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concepts of the present invention for those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the embodiments of the present application.

[0036] In the embodiments of the present application, the terms "upper", "lower", "inside", "middle", "outside", "front", "back", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to being constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood based on the specific circumstances.

[0037] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0038] In the description and claims of the embodiments of the present application and the accompanying drawings, the terms "first," "second," "third," "fourth," and so on (if any) are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can, for example, be implemented in an order other than that illustrated or described herein.

[0039] In the description and claims of the embodiments of the present application and the accompanying drawings, the terms "first," "second," "third," "fourth," and so on (if any) are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can, for example, be implemented in an order other than that illustrated or described herein.

[0040] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0041] Unless otherwise stated, the term "plurality" means two or more.

[0042] As described in the background, electric vehicles, as an important component of new energy vehicles, have seen a significant acceleration in their technological development and industrialization. The battery, the "heart" of an electric vehicle, is directly related to the vehicle's range, power output, and user experience. To ensure the overall performance and safety of electric vehicles, most battery-powered vehicles use a battery box to house the batteries and connect them to the vehicle's body. One prior art battery box structure includes a battery storage space within the box, with lugs welded to the outside of the box frame. These lugs are then securely connected to the vehicle's body structure, thereby securely attaching the battery box to the vehicle's body. However, in the prior art, the lugs are directly welded to the box frame. While this connection achieves the desired connection, as the electric vehicle's mileage increases, this welding-only connection is susceptible to breakage. This directly impacts the securement of the battery box to the vehicle's body structure, potentially impacting the overall safety and performance of the electric vehicle.

[0043] To solve the above problems, an embodiment of the present application provides a battery box structure, including a box, a connecting assembly and a lifting ear, wherein the connecting assembly includes an inner reinforcing plate, an outer reinforcing plate, a threaded sleeve and a fixing screw, the inner reinforcing plate and the outer reinforcing plate are both fixed on the frame, the threaded sleeve passes through the frame and is fixed to the outer reinforcing plate, and the lifting ear is connected to the frame by cooperating with the fixing screw and the threaded sleeve, thereby effectively improving the connection strength between the reinforcing ear and the frame of the box.

[0044] The following specific embodiments describe in detail the technical solutions of the embodiments of the present application and how the technical solutions of the embodiments of the present application solve the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0045] Reference Figures 1 to 6 As shown in , an embodiment of the present application provides a battery box structure, including a box 1, a connecting assembly and a lifting ear 3.

[0046] The box body 1 includes a frame body 11 and a bottom plate 12. The frame body 11 and the bottom plate 12 are surrounded to form a receiving cavity for placing batteries. The connecting assembly includes an inner reinforcing plate 21, an outer reinforcing plate 22, a threaded sleeve 23 and a fixing screw 24. The frame body 11 is provided with a through hole extending in the horizontal direction and passing through the frame body 11. The inner reinforcing plate 21 is provided with a first mounting hole 211, and the outer reinforcing plate 22 is provided with a second mounting hole 221. The inner reinforcing plate 21 is fixed to one end of the frame body 11 close to the receiving cavity and the second reinforcing plate 22 is fixed to the second end of the frame body 11 close to the receiving cavity. A mounting hole 211 is aligned with the through hole, the outer reinforcement plate 22 is fixed to the end of the frame 11 away from the accommodating cavity and the second mounting hole 221 is aligned with the through hole, the threaded sleeve 23 passes through the through hole, the first mounting hole 211 and the second mounting hole 221, and one end of the threaded sleeve 23 is fixed to the inner reinforcement plate 21, and the other end is fixed to the outer reinforcement plate 22. The ear 3 is provided with a fixing hole 31, and the fixing screw 24 passes through the fixing hole 31 and is threadedly connected to the threaded sleeve 23 to fix the ear 3 to the frame 11.

[0047] Specifically, the installation and connection process of the ear 3 and the box body 1 is as follows: first, a through hole is opened on the frame body 11 of the box body 1, a first mounting hole 211 is opened on the inner reinforcing plate 21, and a second mounting hole 221 is opened on the outer reinforcing plate 22. The inner reinforcing plate 21 is fixed to the end of the frame body 11 close to the accommodating cavity and the first mounting hole 211 is aligned with the through hole. The outer reinforcing plate 22 is fixed to the end of the frame body 11 away from the accommodating cavity and the second mounting hole 221 is aligned with the through hole. Afterwards, the threaded sleeve 23 is passed through the first mounting hole 211, the through hole and the second mounting hole 221, and the two ends of the threaded sleeve 23 are fixed to the inner reinforcing plate 21 and the outer reinforcing plate 22 respectively. Finally, the fixing screw 24 is used to pass through the fixing hole 31 of the ear 3 and threadedly connected to the threaded sleeve 23, thereby achieving the purpose of connecting the ear 3 to the box body 1.

[0048] The threaded sleeve 23 is provided with an internal thread 231 , and the internal thread 231 is used for threaded connection with the external thread of the fixing screw 24 .

[0049] The accommodating cavity is used to place the battery. When the battery is placed in the accommodating cavity, the battery is fixed in the accommodating cavity by the limiting fixing member.

[0050] Optionally, the frame 11, base plate 12, inner reinforcing plate 21, outer reinforcing plate 22, threaded sleeve 23 and lifting ear 3 are all made of metal, such as alloy steel or aluminum alloy, etc. These materials not only have high strength, but also can effectively reduce the weight of the battery box structure.

[0051] It should be noted that in this embodiment, the number of through holes, first mounting holes 211, second mounting holes 221 and fixing holes 31 is not limited and can be adjusted according to actual installation requirements. In addition, the number of threaded sleeves 23 and fixing screws 24 matches the number of through holes.

[0052] It should be noted that, in this embodiment, there is no limitation on the number of the lifting lugs 3 , and the number can be selected according to actual installation requirements.

[0053] Specifically, refer to Figures 1 to 6 As shown in the figure, the battery case 1 structure provided by the embodiment of the present application can significantly enhance the connection strength between the lifting ear 3 and the case 1 by fixing an inner reinforcing plate 21, an outer reinforcing plate 22, and a threaded sleeve 23 on the frame 11, and fixing the lifting ear 3 to the frame 11 with a fixing screw 24. In addition, the lifting ear 3 is fixed to the frame 11 by the threaded sleeve 23 and the fixing screw 24, which can facilitate the rapid installation and removal of the lifting ear 3 from the frame 11. Therefore, when the lifting ear 3 is deformed and cannot work normally, the lifting ear 3 can be quickly replaced.

[0054] refer to Figure 2 and Figure 7 As shown in , as an optional implementation, based on any of the above embodiments, the battery box structure further includes: a reinforcing beam 4, the frame 11 is a hollow structure, the reinforcing beam 4 is placed in the frame 11 and welded to the frame 11.

[0055] Specifically, setting the frame 11 as a hollow structure can effectively reduce the overall weight of the battery box structure, but the hollow structure may cause the stiffness of the frame 11 to fail to meet the requirements in some application scenarios. Therefore, by setting a reinforcing beam 4 in the frame 11 and welding the reinforcing beam 4 to the frame 11, the bending and torsional resistance of the frame 11 can be significantly improved, and deformation of the frame 11 can be avoided.

[0056] refer to Figure 7 As shown in , optionally, in this embodiment, the reinforcing beam 4 is provided with a third mounting hole 41 that passes through the reinforcing beam 4 body, the third mounting hole 41 is aligned with the through hole, and the threaded sleeve 23 can pass through the third mounting hole 41.

[0057] Optionally, in this embodiment, the reinforcing beam 4 is made of alloy steel or aluminum alloy.

[0058] Specifically, in this embodiment, the reinforcing beam 4 is a rectangular steel pipe structure. Of course, in other embodiments, the reinforcing beam 4 can also be a plate structure or an angle steel structure.

[0059] Optionally, in this embodiment, the reinforcing beam 4 is welded and fixed to the frame 11, so that the frame 11 and the reinforcing beam 4 can form a sturdy frame structure, which can better disperse and absorb external impact energy and protect the batteries in the box 1 from damage. In the event of an accidental collision or fall, the integrated structure of the frame 11 and the reinforcing beam 4 can significantly reduce the risk of deformation of the battery box structure and damage to the battery.

[0060] Of course, in other embodiments, there are other options for connecting the frame 11 and the reinforcement beam 4, for example, connecting the reinforcement beam 4 and the frame 11 with bolts, or plugging the frame 11 and the reinforcement beam 4 by setting protrusions and grooves.

[0061] refer to Figure 2 As shown in , as an optional implementation, based on any of the above embodiments, a plurality of plug welding holes 111 are opened at one end of the frame 11 away from the accommodating cavity, and the reinforcing beam 4 is welded to the frame 11 through the plug welding holes 111.

[0062] Specifically, after the reinforcing beam 4 is placed inside the frame 11, in addition to welding and fixing the two ends of the reinforcing beam 4 to the frame 11, the outer peripheral side of the reinforcing beam 4 is welded to the frame 11 through multiple plug welding holes 111 opened on the frame 11, thereby further strengthening the connection strength between the reinforcing beam 4 and the frame 11.

[0063] Optionally, a plurality of plug welding holes 111 are arranged at intervals along the length direction of the frame 11.

[0064] The welding holes 111 are all long strip holes, and the extending directions of the plurality of long strip holes are different.

[0065] Optionally, after the reinforcing beam 4 is welded to the frame 11 through the plug welding hole 111, the plug welding hole 111 is filled with a filler, which can achieve a sealing effect and also improve the aesthetics of the frame 11. Furthermore, the filler can be sealing rubber or solid glue.

[0066] refer to Figure 2 As shown in , as an optional implementation, based on any of the above embodiments, the battery box structure further includes a sealing plate 5, which covers one end of the frame 11 and is welded and fixed to the frame 11.

[0067] Specifically, after the reinforcement beam 4 is welded to the frame 11, the sealing plate 5 is used to seal one end of the frame 11 along its length, and the sealing plate 5 is then welded to the frame 11. This provides a seal, preventing impurities such as moisture, dust, or corrosive gases from the external environment from entering the frame 11 and affecting the fixing effect of the reinforcement beam 4 and the frame 11. Furthermore, providing the sealing plate 5 to cover one end of the frame 11 also enhances the overall aesthetics of the frame 11.

[0068] Optionally, the sealing plate 5 is made of metal.

[0069] Optionally, the sealing plate 5 is plugged and fixed to the frame 11 . With this arrangement, the sealing plate 5 can be easily installed on or removed from the frame 11 .

[0070] refer to Figures 2 to 4 As shown in , as an optional embodiment, based on any one of the above embodiments, the lifting ear 3 includes an L-shaped fixed portion and a connecting portion, the fixed portion is used to be fixedly connected to the frame 11, and the connecting portion is extended toward one end away from the frame 11, and the connecting portion is used to be fixedly connected to the vehicle body structure.

[0071] Specifically, in this embodiment, the structure of the lifting ear 3 is set to be L-shaped, wherein the fixing portion is used to be fixedly connected to the frame 11, and the connecting portion is used to be connected to the vehicle body structure, so that the box body 1 can be connected to the vehicle body structure through the lifting ear 3.

[0072] It should be noted that setting the lifting ear 3 to be L-shaped facilitates threaded connection or welding between the fixing part and the frame 11, and also facilitates bolt connection between the connecting part and the vehicle body structure, ensuring that there is no interference between the fixing part and the connecting part during installation and fixation.

[0073] It should also be noted that extending the connecting part toward one end away from the frame 11 can provide sufficient space for the connection and fixation between the vehicle body structure and the connecting part. In addition, the force arm of the connecting part can also disperse the stress at the connection point between the connecting part and the vehicle body structure, reduce the risk of loose connection due to vibration or impact, and ensure the stability of the connection between the battery box structure and the vehicle body structure.

[0074] Optionally, in other embodiments, the structure of the lifting ear 3 may be set to be T-shaped or Z-shaped.

[0075] refer to Figure 2 、 Figure 4 as well as Figure 5 As shown in , as an optional implementation, on the basis of the above embodiment, the fixing portion is provided with an avoidance groove 32 , and the threaded sleeve 23 is provided at one end of the outer reinforcing plate 22 and inserted into the avoidance groove 32 .

[0076] Specifically, a brim 232 is provided at one end of the threaded sleeve 23. The brim 232 can abut against the outer reinforcing plate 22 when the threaded sleeve 23 is installed, thereby limiting the movement of the threaded sleeve 23. In addition, the brim 232 also facilitates welding and fixing the threaded sleeve 23 to the outer reinforcing plate 22. Accordingly, an avoidance groove 32 is provided in the fixing portion of the lifting ear 3. When the fixing portion is threadedly connected to the threaded sleeve 23, the brim 232 of the threaded sleeve 23 can be inserted into the avoidance groove 32, so that the fixing portion can fit against the outer reinforcing plate 22, thereby ensuring the connection between the fixing portion and the threaded sleeve 23.

[0077] It should be noted that arranging the brim 232 of the threaded sleeve 23 in the avoidance groove 32 can also play the role of the threaded sleeve 23 to prevent water stains or dust from affecting the fixing effect of the threaded sleeve 23.

[0078] Optionally, a rubber pad or a sealing pad is provided in the avoidance groove 32 , thereby avoiding wear and abnormal noise caused by direct collision between the inner wall of the avoidance groove 32 and the brim 232 of the threaded sleeve 23 .

[0079] refer to Figure 3 As shown in , as an optional embodiment, based on any one of the above embodiments, the battery box structure provided by the embodiment of the present application, the ear 3 is provided with a reinforcing rib 33, one end of the reinforcing rib 33 is provided at the fixing portion, and the other end is provided at the connecting portion.

[0080] Specifically, by providing reinforcing ribs 33 on the lifting ear 3 structure, the reinforcing ribs 33 structure can significantly increase the connection strength between the fixing part and the connecting part of the lifting ear 3, thereby reducing the risk of deformation or even breakage of the lifting ear 3 during long-term use, and ensuring the connection effect between the battery box structure and the vehicle body structure.

[0081] Optionally, the reinforcing rib 33 and the lifting lug 3 are integrally cast, which ensures the direct connection strength between the reinforcing rib 33 and the lifting lug 3. Of course, the reinforcing rib 33 and the lifting lug 3 can also be welded to reduce the difficulty and production cost of integrally casting the lifting lug 3 and the reinforcing rib 33.

[0082] Optionally, in this embodiment, the lifting ear 3 is further provided with a flange structure, and the function of the flange structure is the same as that of the reinforcing rib 33, so it will not be described in detail.

[0083] refer to Figures 2 to 4 As shown in , as an optional embodiment, based on the above embodiment, the battery box structure provided in the embodiment of the present application has a connecting portion with a connecting hole 34 extending in the vertical direction, and the fastening bolts are fixedly connected to the vehicle body structure through the connecting hole 34.

[0084] Specifically, in this embodiment, the connecting portion is provided with a connecting hole 34, through which a fastening bolt is passed to securely connect the connecting portion of the lifting lug 3 to the vehicle body structure. Thus, this connection method allows for rapid connection of the connecting portion to the vehicle body structure, and further allows for rapid installation of the battery box structure thereon.

[0085] Among them, the connecting hole 34 is extended in the vertical direction so that the fastening bolt can generate sufficient pre-tightening force when tightened, tightly connecting the connecting part to the vehicle body structure, which can effectively resist the vibration and impact generated during the vehicle driving process, and ensure that the connection between the battery box structure and the vehicle body structure is firm and reliable.

[0086] Among them, the connection between the connecting part and the vehicle body structure is achieved by fastening bolts, which can facilitate the installation and disassembly of the battery box structure. During installation, it is only necessary to align the connecting part with the corresponding position on the vehicle body structure, and then pass the fastening bolts through the connecting hole 34 and tighten them. When disassembly is required, it is only necessary to loosen the fastening bolts to remove the battery box structure from the vehicle body structure.

[0087] Optionally, locking washers are provided or locking agents are applied at the positions where the fastening bolts contact the connecting portion and the fastening bolts contact the vehicle body structure, thereby improving the fixing effect of the fastening bolts on the connecting portion and the vehicle body structure and preventing loosening.

[0088] refer to Figure 1 As shown in , as an optional embodiment, on the basis of any of the above embodiments, the battery box structure provided in the embodiment of the present application, the frame 11 includes two first frames extending along the length direction of the box 1 and arranged in parallel, and two second frames extending along the width direction of the box 1 and arranged in parallel, a plurality of lifting ears 3 are configured, and a plurality of connecting components are configured, and the plurality of lifting ears 3 are respectively fixed to the two first frames through a plurality of connecting components.

[0089] Specifically, in this embodiment, the frame 11 is composed of two first frames extending along the length direction of the box 1 and arranged in parallel, and two second frames extending along the width direction of the box 1 and arranged in parallel. This rectangular frame structure provides good structural strength and rigidity, and can effectively resist external impact and vibration, thereby playing a role in protecting the batteries inside the box 1.

[0090] The parallel arrangement of the first frame and the second frame can ensure the overall stability of the box 1 , so that the box 1 can evenly distribute stress when bearing a load, reduce local stress concentration, and thus increase the service life of the box 1 .

[0091] Specifically, multiple lifting ears 3 are fixed to the two first frames through multiple sets of connecting components, which can ensure that the battery box 1 is stably and firmly connected to the vehicle body structure. In addition, the method of arranging the lifting ears 3 on the two first frames can evenly bear the weight and vibration load of the box 1, thereby ensuring the connection and fixing effect of the lifting ears 3.

[0092] Optionally, in other embodiments, a plurality of lifting ears 3 may be provided only on the second frame body; or lifting ears 3 may be provided on both the first frame body and the second frame body.

[0093] The present application also provides an electric vehicle comprising a vehicle body structure and the aforementioned battery housing structure, wherein the battery housing structure is fixedly mounted to the vehicle body structure. The battery housing structure is stably and securely connected to the vehicle body structure, thereby ensuring that the batteries within the battery housing can stably power the electric vehicle.

[0094] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to encompass any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed in the present invention. The specification and examples are to be considered merely as exemplary, and the true scope and spirit of the present invention are indicated by the following claims.

[0095] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

Claims

1. A battery box structure, characterized in that: include: The box body includes a frame and a bottom plate, wherein the frame and the bottom plate are arranged to form a receiving cavity, and the receiving cavity is used to place the battery; The connecting assembly and the lifting ear, the connecting assembly includes an inner reinforcing plate, an outer reinforcing plate, a threaded sleeve and a fixing screw, the frame body is provided with a through hole extending in a horizontal direction and passing through the frame body, the inner reinforcing plate is provided with a first mounting hole, the outer reinforcing plate is provided with a second mounting hole, the inner reinforcing plate is fixed to one end of the frame body close to the accommodating cavity and the first mounting hole is aligned with the through hole, the outer reinforcing plate is fixed to one end of the frame body away from the accommodating cavity and the second mounting hole is aligned with the through hole, the threaded sleeve passes through the through hole, the first mounting hole and the second mounting hole, and one end of the threaded sleeve is fixed to the inner reinforcing plate, and the other end is fixed to the outer reinforcing plate, the lifting ear is provided with a fixing hole, the fixing screw passes through the fixing hole and is threadedly connected to the threaded sleeve to fix the lifting ear to the frame body.

2. The battery box structure according to claim 1, characterized in that: Also includes: The reinforcing beam is a hollow structure, and the reinforcing beam is placed in the frame and welded to the frame.

3. The battery box structure according to claim 2, characterized in that: A plurality of plug welding holes are formed on one end of the frame away from the accommodating cavity, and the reinforcing beam is welded to the frame through the plug welding holes.

4. The battery box structure according to claim 2, characterized in that: Also includes: A sealing plate is sealed on one end of the frame and is fixed to the frame by welding.

5. The battery box structure according to claim 1, characterized in that: The lifting lug includes an L-shaped fixed portion and a connecting portion, wherein the fixed portion is used for being fixedly connected to the frame, and the connecting portion is extended toward one end away from the frame, and is used for being fixedly connected to the vehicle body structure.

6. The battery box structure according to claim 5, characterized in that: The fixing portion is provided with an avoidance groove, and one end of the threaded sleeve is arranged on the outer reinforcing plate and inserted into the avoidance groove.

7. The battery box structure according to claim 5, characterized in that: The lifting ear is provided with a reinforcing rib, one end of the reinforcing rib is provided on the fixing portion, and the other end is provided on the connecting portion.

8. The battery box structure according to claim 5, characterized in that: The connecting portion is provided with a connecting hole extending in a vertical direction, and a fastening bolt passes through the connecting hole to fix the connecting portion to the vehicle body structure.

9. The battery box structure according to any one of claims 1 to 8, characterized in that: The frame includes two first frames extending along the length direction of the box and arranged in parallel, and two second frames extending along the width direction of the box and arranged in parallel. There are multiple lifting ears, and there are multiple groups of connecting components. The multiple lifting ears are respectively fixed to the two first frames through multiple groups of connecting components.

10. An electric vehicle, characterized in that: It comprises a vehicle body structure and a battery box structure according to any one of claims 1 to 9, wherein the battery box structure is fixedly installed on the vehicle body structure.

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