Battery pack tray structure and vehicle

Abstract

The utility model relates to the technical field of vehicle accessories, and provides a battery pack tray structure and a vehicle. Wherein the battery pack tray comprises a magnesium alloy tray, an aluminum alloy shaft sleeve and an insulating bush; the magnesium alloy tray is used for bearing a battery pack and is provided with a through mounting hole; the aluminum alloy shaft sleeve comprises a main body part arranged in the mounting hole in a penetrating mode, and a first annular edge and a second annular edge which are arranged at the two ends of the main body part, and the first annular edge and the second annular edge are arranged on the peripheral side of the mounting hole in a surrounding mode so that the main body part can be fixed in the mounting hole; and the insulating bush is arranged between the magnesium alloy tray and the aluminum alloy shaft sleeve, so that the main body part, the first annular edge and the second annular edge are insulated from the magnesium alloy tray. The magnesium alloy tray can be fixedly connected with the frame of the vehicle through the light aluminum alloy shaft sleeve, and the insulating bush isolates the aluminum alloy shaft sleeve from the magnesium alloy tray to avoid galvanic corrosion, so that the magnesium alloy tray can be practically applied to the vehicle, and the light weight of the battery pack is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle accessories, and in particular to a battery pack tray structure and a vehicle. BACKGROUND

[0002] A new energy vehicle battery pack is usually connected to the bottom of a vehicle body through a frame mounting structure to realize assembly. In order to realize lightweight design, the prior art generally uses lightweight alloys such as aluminum alloy to manufacture a tray and a mounting structure, but the aluminum alloy material density (about 2.7 g / cm 3 ) still has further weight reduction space. As the lowest density metal structural material (1.74 g / cm 3 ), magnesium alloy has significantly better specific strength and specific stiffness than aluminum alloy, and theoretically, using magnesium alloy to manufacture a tray can significantly reduce the weight of a battery pack, which is an ideal lightweight alternative material.

[0003] However, magnesium alloy is extremely prone to severe oxidation reaction with oxygen and nitrogen in a high temperature environment, generates high-melting-point oxides to cause deterioration of welding pool fluidity, and it is difficult for a traditional welding process to form a reliable connection structure. When magnesium alloy directly contacts a steel or aluminum member of a vehicle body and a conventional connecting piece, a significant galvanic corrosion effect is formed, which reduces the strength and stability of the connection between the tray and the vehicle body. The above defects restrict the practical application of magnesium alloy to a battery tray and affect the lightweight design of a battery pack. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a battery pack tray structure and a vehicle.

[0005] The first aspect of the present application provides a battery pack tray structure, comprising:

[0006] A magnesium alloy tray for accommodating a battery pack, the magnesium alloy tray being provided with a mounting hole penetrating therethrough;

[0007] An aluminum alloy shaft sleeve, comprising a main body portion penetrating the mounting hole, a first annular edge and a second annular edge provided at both ends of the main body portion, the first annular edge and the second annular edge being arranged around the peripheral side of the mounting hole to fix the main body portion in the mounting hole;

[0008] An insulating bushing arranged between the magnesium alloy tray and the aluminum alloy shaft sleeve to insulate the main body portion, the first annular edge and the second annular edge from the magnesium alloy tray.

[0009] Optionally, the main body part comprises a first connecting part and a second connecting part with a central opening, the first connecting part is threadedly connected in the second connecting part, and the first connecting part and the second connecting part are respectively formed with the first annular edge and the second annular edge at the ends away from each other.

[0010] Optionally, the magnesium alloy tray comprises a first plate body and a second plate body arranged at intervals, the first plate body is provided with a first hole, the second plate body is provided with a second hole, the first hole and the second hole are coaxially arranged, and the main body part is arranged in the first hole and the second hole;

[0011] The insulating bushing comprises a first bushing and a second bushing, the first bushing is arranged between the hole wall of the first hole and the main body part and extends between the first annular edge and the first plate body, so that the first annular edge abuts against the first plate body through the first bushing;

[0012] The second bushing is arranged between the hole wall of the second hole and the main body part and extends between the second annular edge and the second plate body, so that the second annular edge abuts against the second plate body through the second bushing.

[0013] Optionally, the outer side of the first bushing is annularly provided with a first sealant layer, and the outer side of the second bushing is annularly provided with a second sealant layer;

[0014] The first sealant layer is arranged between the first annular edge and the first plate body, and the second sealant layer is arranged between the second annular edge and the second plate body.

[0015] Optionally, the first annular edge is provided with a first accommodating groove, and a part of the first bushing is arranged between the first accommodating groove and the first plate body, so that a gap for accommodating the first sealant layer is formed between the first annular edge and the first plate body.

[0016] Optionally, the second annular edge is provided with a second accommodating groove, and a part of the second bushing is arranged between the second accommodating groove and the second plate body, so that a gap for accommodating the second sealant layer is formed between the second annular edge and the second plate body.

[0017] Optionally, a part of the main body part between the first plate body and the second plate body is formed with an abutting table, a rubber pad is arranged between the top of the abutting table and the bottom of the first plate body, and the rubber pad abuts against the abutting table and the first plate body.

[0018] The second aspect of the application provides a vehicle comprising a vehicle frame, a fastener and the battery pack tray structure according to any one of the above;

[0019] The frame is provided with an assembly hole coaxially aligned with the mounting hole;

[0020] The fastener is arranged in the main body part and the assembly hole, and one end is connected with the main body part and the other end is connected with the frame;

[0021] One side of the first annular edge is in abutment with the frame, and the other side is in abutment with the magnesium alloy tray through the insulating bushing, so that the magnesium alloy tray is arranged in a spaced manner with the frame.

[0022] Optionally, the edge of the magnesium alloy tray is provided with a frame, the mounting hole is formed on the frame, the frame is arranged on the bottom side of the frame, and the fastener connects the frame and the frame.

[0023] Optionally, the end of the main body part away from the frame is recessed to form a sink, and the end of the fastener is arranged in the sink and connected with the bottom of the sink.

[0024] The technical scheme provided in the application has the following advantages compared with the prior art:

[0025] The application provides a battery pack tray structure and a vehicle. The first annular edge and the second annular edge of the battery pack tray structure can be in abutment on the magnesium alloy tray through the insulating bushing, so as to limit the main body part in the mounting hole; the aluminum alloy shaft sleeve and the insulating bushing cooperate with each other, so that the magnesium alloy tray and the aluminum alloy shaft sleeve are physically isolated, the galvanic corrosion path between the magnesium alloy tray and the aluminum alloy shaft sleeve is blocked, and the problem of galvanic corrosion of the magnesium alloy tray when the magnesium alloy tray is mounted on the frame is avoided. The magnesium alloy tray can be fixedly connected with the frame of the vehicle through the aluminum alloy shaft sleeve with light weight, the insulating bushing isolates the aluminum alloy shaft sleeve and the magnesium alloy tray to avoid galvanic corrosion, so that the magnesium alloy tray can be practically applied to the vehicle, and the light weight of the battery pack is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] Figure 1 The cross-sectional view of the battery pack tray structure described in the embodiments of the application;

[0029] Figure 2 ​Figure 1 An enlarged view of the structure at A;

[0030] Figure 3 For Figure 1 An enlarged view of the structure at B.

[0031] Wherein, 1, magnesium alloy tray; 11, first plate body; 12, second plate body; 2, frame; 3, aluminum alloy shaft sleeve; 31, main body; 311, first connecting part; 312, second connecting part; 32, first annular edge; 33, second annular edge; 34, sink; 41, first bushing; 411, first sealant layer; 412, rubber pad; 42, second bushing; 421, second sealant layer; 5, fastener. DETAILED DESCRIPTION

[0032] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present application, not all the embodiments.

[0034] Referring to Figures 1 to 3 As shown in the drawings, the first aspect of the present application provides a battery pack tray structure, comprising a magnesium alloy tray 1, an aluminum alloy shaft sleeve 3 and an insulating bushing; the magnesium alloy tray 1 is used for containing a battery pack, and the magnesium alloy tray 1 is provided with a through mounting hole; the aluminum alloy shaft sleeve 3 comprises a main body 31 penetrating the mounting hole, a first annular edge 32 and a second annular edge 33 arranged at both ends of the main body 31, and the first annular edge 32 and the second annular edge 33 are arranged around the peripheral side of the mounting hole to fix the main body 31 in the mounting hole; the insulating bushing is arranged between the magnesium alloy tray 1 and the aluminum alloy shaft sleeve 3 to insulate the main body 31, the first annular edge 32 and the second annular edge 33 from the magnesium alloy tray 1.

[0035] Specifically, the magnesium alloy tray 1 is made of magnesium alloy material and has a whole rectangular or special-shaped plate structure, and a cavity for fixing a battery is arranged inside. The magnesium alloy tray 1 can be selected to uniformly distribute a plurality of through holes as mounting holes at the edges, of course, the magnesium alloy tray 1 can also be selected to arrange a side beam or a frame at the edges, and the through holes as mounting holes are arranged on the side beam or the frame; the hole diameter of the mounting hole can be selected to be slightly larger than the diameter of the fastener 5, which is convenient for subsequent assembly. The magnesium alloy tray 1 can be additionally provided with a reinforcing rib on the surface to improve the structural strength.

[0036] The main body 31 is a hollow cylindrical structure, the outer diameter of which matches the mounting hole of the magnesium alloy tray 1, and the inner diameter of which allows the fastener 5 to pass through. The length of the main body 31 is greater than the thickness of the magnesium alloy tray 1, and the first annular edge 32 and the second annular edge 33 are respectively arranged at the two ends of the main body 31, so that the first annular edge 32 and the second annular edge 33 are respectively arranged on the two sides of the magnesium alloy tray 1.

[0037] The first annular edge 32 can be a disc-shaped flange that expands outward, and the diameter of the first annular edge 32 is greater than that of the mounting hole, so that the first annular edge 32 can be abutted on the magnesium alloy tray 1 through the insulating sleeve. The second annular edge 33 is also a disc-shaped flange, and the diameter of the second annular edge 33 is the same as that of the first annular edge 32, which is used to limit the displacement of the aluminum alloy sleeve 3 in the axial direction of the mounting hole.

[0038] The top end of the main body 31 can be provided with a deformed plate, which forms the first annular edge 32 after being deformed. When the deformed plate is not deformed, the insulating sleeve is sleeved on the main body 31. The main body 31 is inserted into the mounting hole, so that the deformed plate is arranged on one side of the magnesium alloy tray 1, and then the deformed plate is bent to form the first annular edge 32. The first annular edge 32 and the second annular edge 33 are arranged on the two sides of the magnesium alloy tray 1, so as to limit the main body 31 in the mounting hole.

[0039] In another optional embodiment, the two ends of the main body 31 can be provided with deformed plates. When the deformed plates at the two ends of the main body 31 are not deformed, the main body 31 is inserted into the mounting hole, and then the deformed plates at the two ends of the main body 31 are bent to form the first annular edge 32 and the second annular edge 33, respectively. Of course, the main body 31 can also include two independent cylinders. One cylinder forms the first annular edge 32, and the other cylinder forms the second annular edge 33. The two cylinders are inserted into the mounting hole from the two ends of the mounting hole, respectively, and are connected to each other in the mounting hole, so that the first annular edge 32 and the second annular edge 33 are arranged on the two sides of the magnesium alloy tray 1, respectively.

[0040] The insulating sleeve can be made of insulating materials such as nylon, plastic, rubber, or ceramic fiber, and is annularly sleeved on the outer wall of the main body 31 to cover the part of the aluminum alloy sleeve 3 in the mounting hole. The insulating sleeve extends between the first annular edge 32 and the magnesium alloy tray 1, so that the first annular edge 32 and the magnesium alloy tray 1 are physically separated and insulated from each other. The insulating sleeve also extends between the second annular edge 33 and the magnesium alloy tray 1, so that the second annular edge 33 and the magnesium alloy tray 1 are physically separated and insulated from each other, so that the aluminum alloy sleeve 3 and the magnesium alloy tray 1 are physically separated and insulated from each other as a whole.

[0041] The surface of the magnesium alloy tray 1 is usually provided with a corrosion-resistant coating. The insulating sleeve arranged between the aluminum alloy sleeve and the magnesium alloy tray 1 can have a buffering effect, preventing the aluminum alloy sleeve 3 from scratching the magnesium alloy tray 1 and damaging the corrosion-resistant coating.

[0042] The battery pack tray structure provided by the embodiment of the application is used as follows: an insulating bushing is mounted on the outer side of the aluminum alloy shaft sleeve 3, the main body 31 is inserted into the mounting hole of the magnesium alloy tray 1, the first annular edge 32 abuts against the magnesium alloy tray 1 through the insulating bushing, and the second annular edge 33 abuts against the magnesium alloy tray 1 through the insulating bushing; the fastener 5 is arranged in the internal passage of the main body 31 and the assembly hole of the vehicle frame 2, one end of the fastener 5 is connected with the aluminum alloy shaft sleeve 3, and the other end is connected with the vehicle frame 2, so that the magnesium alloy tray 1 is fixedly connected with the vehicle frame 2.

[0043] The battery pack tray structure provided by the embodiment of the application is used as follows: an insulating bushing is mounted on the outer side of the aluminum alloy shaft sleeve 3, the main body 31 is inserted into the mounting hole of the magnesium alloy tray 1, the first annular edge 32 abuts against the magnesium alloy tray 1 through the insulating bushing, and the second annular edge 33 abuts against the magnesium alloy tray 1 through the insulating bushing; the fastener 5 is arranged in the internal passage of the main body 31 and the assembly hole of the vehicle frame 2, one end of the fastener 5 is connected with the aluminum alloy shaft sleeve 3, and the other end is connected with the vehicle frame 2, so that the magnesium alloy tray 1 is fixedly connected with the vehicle frame 2.

[0044] Referring to FIGS. 1 to 3, Figure 1 , Figure 2 and Figure 3 , in some embodiments, the main body 31 includes a first connecting part 311 and a second connecting part 312 with central openings, the first connecting part 311 is threadedly connected in the second connecting part 312, and the ends of the first connecting part 311 and the second connecting part 312 away from each other form the first annular edge 32 and the second annular edge 33, respectively.

[0045] In this way, the second connecting part 312 and the first connecting part 311 are inserted into the mounting hole from two ends of the mounting hole, so that the main body 31 is arranged in the mounting hole, and the second annular edge 33 and the first annular edge 32 are arranged on two sides of the magnesium alloy tray 1, respectively, thereby avoiding that the main body 31 is first arranged in the mounting hole and then deformed to form the second annular edge 33 or the first annular edge 32, and improving the convenience of mounting the aluminum alloy shaft sleeve 3 in the mounting hole. The threaded cooperation provides stable axial locking force, avoids separation of the second connecting part 312 and the first connecting part 311, and the threaded cooperation is simple in dismounting operation and facilitates replacement of the aluminum alloy shaft sleeve 3 in later maintenance. Rotating the first connecting part 311 relative to the second connecting part 312 can adjust the relative positions of the second connecting part 312 and the first connecting part 311, so that the first annular edge 32 and the second annular edge 33 are close to or away from each other, so that the aluminum alloy shaft sleeve 3 can be adapted to magnesium alloy trays 1 with different thicknesses.

[0046] Specifically, the first connecting part 311 is a tubular structure with external threads, and the second connecting part 312 can be an aluminum alloy tubular structure with internal threads; after the first connecting part 311 is inserted into the second connecting part 312, the first connecting part 311 and the second connecting part 312 can be threadedly connected. An insulating bushing can be selected to be sleeved on the outer walls of the first connecting part 311 and the second connecting part 312 connected to each other, to ensure that both are spaced from the magnesium alloy tray 1. The first connecting part 311 is provided with a first annular edge 32 at an end away from the second connecting part 312 in the axial direction of the mounting hole, and the second connecting part 312 is provided with a second annular edge 33 at an end away from the first connecting part 311 in the axial direction of the mounting hole.

[0047] The part of the outer wall of the first connecting part 311 away from the first annular edge 32 is provided with external threads, and the part of the inner wall of the second connecting part 312 away from the second annular edge 33 is provided with internal threads; the diameter of the first connecting part 311 is equal to or slightly smaller than the diameter of the inner passage of the second connecting part 312, so that the first connecting part 311 can be inserted into the second connecting part 312, and the internal threads and the external threads can be threadedly engaged; when the second connecting part 312 is connected to the first connecting part 311, the first connecting part 311 is driven to rotate relative to the second connecting part 312, so that the internal threads and the external threads are engaged with each other to connect the second connecting part 312 to the first connecting part 311.

[0048] Referring to FIGS. 1 to 4, Figure 1 , Figure 2 and Figure 3 In some embodiments, the magnesium alloy tray 1 includes a first plate body 11 and a second plate body 12 arranged in a spaced manner, the first plate body 11 is provided with a first hole, and the second plate body 12 is provided with a second hole, the first hole and the second hole are coaxially arranged, and the main body part 31 is arranged in the first hole and the second hole; the insulating bushing includes a first bushing 41 and a second bushing 42, the first bushing 41 is arranged between the hole wall of the first hole and the main body part 31 and extends to between the first annular edge 32 and the first plate body 11, so that the first annular edge 32 abuts against the first plate body 11 through the first bushing 41; the second bushing 42 is arranged between the hole wall of the second hole and the main body part 31 and extends to between the second annular edge 33 and the second plate body 12, so that the second annular edge 33 abuts against the second plate body 12 through the second bushing 42.

[0049] In this way, the double-layer plate body structure reduces the material usage of the magnesium alloy tray 1 and reduces the weight of the magnesium alloy tray 1; the insulating bushing is divided into the first bushing 41 and the second bushing 42, which reduces the material usage of the insulating bushing, and the split structure of the insulating bushing cooperates with the double-layer plate body structure to isolate the first plate body 11 and the second plate body 12 from the aluminum alloy shaft sleeve 3.

[0050] Specifically, the first plate 11 and the second plate 12 are disposed on the edge of the magnesium alloy tray 1 to form a hollow sandwich structure. Alternatively, the edge of the magnesium alloy tray 1 can have a hollow frame, with the plate near the top of the frame being the first plate 11 and the plate near the bottom of the frame being the second plate 12. Both the first plate 11 and the second plate 12 can be magnesium alloy stamped plates. The first hole and the second hole are respectively formed on the first plate 11 and the second plate 12, and the first hole and the second hole are coaxially arranged. The diameter of the first hole can be equal to the diameter of the second hole, or the diameter of the first hole can be smaller than the diameter of the second hole. The first hole and the second hole cooperate to form mounting holes on the magnesium alloy tray 1.

[0051] The first bushing 41 and the second bushing 42 described above can both be annular insulating components. The first bushing 41 is embedded between the hole wall of the first hole and the main body 31, and extends to the space between the first annular edge 32 and the first plate 11, thereby isolating the first annular edge 32 from the first plate 11. The second bushing 42 is embedded between the hole wall of the second hole and the main body 31, and extends to the space between the second annular edge 33 and the second plate 12, thereby isolating the second annular edge 33 from the second plate 12. The main body 31 also passes through a through hole on the double-layer plate, and the first bushing 41 and the second bushing 42 respectively isolate the aluminum alloy bushing 3 from contact with the first plate 11 and the second plate 12.

[0052] When the main body 31 includes a first connecting part 311 and a second connecting part 312, the first connecting part 311 is inserted into the first hole, so that the first annular edge 32 is on the side of the first plate 11 facing away from the second plate 12; the second connecting part 312 is inserted into the second hole, so that the second annular edge 33 is on the side of the second plate 12 facing away from the first plate 11.

[0053] The second connecting part 312 and the first connecting part 311 are connected to each other between the first plate 11 and the second plate 12; the first bushing 41 is sleeved on the first connecting part 311, so that the first connecting part 311 and the first annular edge 32 are spaced apart from the first plate 11; the second bushing 42 is sleeved on the second connecting part 312, so that the second connecting part 312 and the second annular edge 33 are spaced apart from the second plate 12.

[0054] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the outer ring of the first bushing 41 is provided with a first sealing layer 411, and the outer ring of the second bushing 42 is provided with a second sealing layer 421; the first sealing layer 411 is disposed between the first annular edge 32 and the first plate 11, and the second sealing layer 421 is disposed between the second annular edge 33 and the second plate 12.

[0055] In this way, the first sealant layer 411 and the second sealant layer 421 are pressed to fill the small gap by pressure during assembly, and after curing, realize physical isolation and chemical corrosion prevention, so that the sealant layer blocks the contact of the magnesium alloy with the corrosive medium such as water vapor and salt mist in the environment, and avoids the galvanic corrosion of the magnesium alloy tray 1 and the aluminum alloy shaft sleeve 3 caused by water vapor and salt mist. The first bushing 41 isolates the aluminum alloy shaft sleeve 3 from the first plate body 11, and the second bushing 42 isolates the aluminum alloy shaft sleeve 3 from the second plate body 12; the first bushing 41 and the second bushing 42 can also absorb vibration to avoid collision and friction between the aluminum alloy shaft sleeve 3 and the first plate body 11 and the second plate body 12.

[0056] Specifically, the first bushing 41 can be made of plastic, rubber or ceramic fiber; the first bushing 41 is in the form of a ring-shaped sleeve, the inner wall of the first bushing 41 is tightly attached to the main body part 31, and the outer wall is attached to the hole wall of the first hole on the first plate body 11. The first bushing 41 covers at least the entire area of the main body part 31 in the first hole, and extends towards the first annular edge 32 to form a ring-shaped flange abutting between the first annular edge 32 and the first plate body 11.

[0057] The first sealant layer 411 described above can be made of epoxy resin or silicone material, and is attached to the side of the flange of the first bushing 41 away from the main body part 31, and is bonded between the first plate body 11 and the first annular edge 32 to form a completely sealed insulating interface between the first annular edge 32 and the first plate body 11, so as to isolate the first bushing 41 from the external environment.

[0058] The second bushing 42 described above can be made of plastic, rubber or ceramic fiber; the second bushing 42 is in the form of a ring-shaped sleeve; the inner wall of the second bushing 42 is tightly attached to the main body part 31, and the outer wall is attached to the hole wall of the second hole on the second plate body 12. The second bushing 42 covers at least the entire area of the main body part 31 in the second hole, and extends towards the second annular edge 33 to form a ring-shaped flange abutting between the second annular edge 33 and the second plate body 12.

[0059] The second sealant layer 421 described above is arranged on the side of the flange of the second bushing 42 away from the main body part 31, and is bonded between the second annular edge 33 and the second plate body 12 to form a completely sealed insulating interface between the second annular edge 33 and the second plate body 12, so as to isolate the second bushing 42 from the external environment.

[0060] Referring to Figure 1 , Figure 2 and Figure 3 , in some embodiments, the first annular edge 32 is provided with a first accommodating groove, a part of the first bushing 41 is arranged between the first accommodating groove and the first plate body 11, and a gap for accommodating the first sealant layer 411 is formed between the first annular edge 32 and the first plate body 11.

[0061] In this way, the first accommodating groove limits the radial movement of the first bushing 41 on the main body 31, and the first bushing 41 can be supported between the groove bottom of the first accommodating groove and the first plate body 11, so as to improve the stability of the first bushing 41 on the main body 31, and ensure that the aluminum alloy shaft sleeve 3 and the first plate body 11 are continuously kept in an isolated state.

[0062] Specifically, the first accommodating groove is arranged on the end face of the first annular edge 32 facing the first plate body 11, and the first accommodating groove is arranged near the edge of the main body 31 on the end face. The axial direction of the main body 31 is the depth direction of the first accommodating groove and the thickness direction of the first bushing 41. The first bushing 41 includes a cylindrical member and a flange. The cylindrical member is sleeved on the main body 31, and the flange extends away from the main body 31. The flange is accommodated in the first accommodating groove, and the thickness of the flange is greater than the depth of the first accommodating groove. The side of the flange away from the groove bottom of the first accommodating groove protrudes out of the first accommodating groove. When the flange abuts against the first plate body 11, the flange is supported between the groove bottom of the first accommodating groove and the end face of the first plate body 11 facing the vehicle frame 2, so that the first annular edge 32 is arranged in a spaced manner with the first plate body 11.

[0063] The first accommodating groove limits the displacement of the first bushing 41 in the radial direction of the main body 31. The first bushing 41 is first sleeved on the main body 31, and then the main body 31 and the first bushing 41 are inserted into the first hole together, thereby completing the operation of installing the main body 31 and the first bushing 41 on the magnesium alloy tray 1.

[0064] Referring to FIGS. Figure 1 , Figure 2 and Figure 3 In some embodiments, the second annular edge 33 is provided with a second accommodating groove, and a part of the second bushing 42 is arranged between the second accommodating groove and the second plate body 12, so that a gap for accommodating the second sealant layer 421 is formed between the second annular edge 33 and the second plate body 12.

[0065] In this way, the second accommodating groove limits the displacement of the second bushing 42 in the radial direction of the main body 31, thereby improving the stability of the second bushing 42 on the main body 31, so that the second bushing 42 can stably separate the aluminum alloy shaft sleeve 3 and the second plate body 12 when the battery pack tray structure is vibrated.

[0066] Specifically, the second accommodating groove can be arranged on the end face of the second annular edge 33 facing the second plate body 12, and the second accommodating groove is arranged near the edge of the main body 31 on the end face. The axial direction of the main body 31 is the depth direction of the second accommodating groove and the thickness direction of the second bushing 42.

[0067] The aforementioned second bushing 42 includes a cylindrical part and a flange. The cylindrical part is sleeved on the main body 31, and the flange extends in a direction away from the main body 31. The flange is accommodated in the second receiving groove, and the thickness of the flange is greater than the depth of the second receiving groove. The side of the flange away from the bottom of the second receiving groove protrudes out of the second receiving groove. When the flange abuts against the second plate 12, the flange is supported between the bottom of the second receiving groove and the end face of the second plate 12 facing the frame 2, so that the second annular edge 33 is spaced apart from the second plate 12.

[0068] The second receiving groove described above radially restricts the displacement of the second bushing 42 in the main body 31. The second bushing 42 can be first fitted onto the main body 31 and then inserted into the second hole together with the main body 31, thus completing the operation of placing the second bushing 42 between the aluminum alloy bushing 3 and the magnesium alloy tray 1.

[0069] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the portion of the main body 31 located between the first plate 11 and the second plate 12 forms an abutment platform, and a rubber pad 412 is provided between the top of the abutment platform and the bottom of the first plate 11, and the rubber pad 412 abuts against the abutment platform and the first plate 11.

[0070] With this configuration, the abutment platform acts as a limiting structure, restricting the movement distance of the aluminum alloy bushing 3 within the mounting hole to determine the position of the main body 31 between the first plate 11 and the second plate 12; and when the vehicle vibrates, the rubber pad 412 deforms to absorb vibration energy and reduce the impact transmitted to the magnesium alloy tray 1, thereby reducing the vibration amplitude of the battery pack during vehicle operation, reducing the risk of abnormal noise, and protecting the battery module.

[0071] Specifically, the diameter of the second hole is larger than the diameter of the first hole, and an abutment platform is formed on the main body 31. The diameter of the abutment platform is larger than the diameter of the first hole and smaller than the diameter of the second hole, so that the top of the abutment platform can be positioned opposite to the area surrounding the first hole.

[0072] The diameter of one part of the main body 31 can be larger than that of another part, so that the larger diameter part of the main body 31 forms the abutment platform. Alternatively, the middle section of the main body 31 can have an outwardly extending flange, the diameter of which is larger than the diameter of the first hole and smaller than the diameter of the second hole. The main body 31 passes through the second hole between the first plate 11 and the second plate 12, and then exits through the second hole, so that the abutment platform is between the first plate 11 and the second plate 12. The abutment platform is spaced apart from the first plate 11, and a rubber pad 412 is sandwiched between the first plate 11 and the abutment platform, so that the abutment platform can abut against the first plate 11 through the rubber pad 412.

[0073] Alternatively, the main body 31 can also be selected to include the first connecting portion 311 and the second connecting portion 312, the diameter of the second connecting portion 312 is greater than the diameter of the first hole and less than the diameter of the second hole, the top of the second connecting portion 312 forms an abutting table, and the rubber pad 412 is abutted between the top of the second connecting portion 312 and the bottom of the first plate body 11. The first connecting portion 311 and the second connecting portion 312 can adjust the relative position through threads, so as to adapt to different thicknesses of the first plate body 11 and the second plate body 12, that is, the first connecting portion 311 and the second connecting portion 312 have a self-adjusting function, and the rubber pad 412 has elasticity and can be deformed; when the manufacturing precision of the magnesium alloy tray 1 is low and the thickness is inaccurate, the first connecting portion 311 and the second connecting portion 312 adjust the relative position, and cooperate with the deformation of the rubber pad 412, so that the aluminum alloy shaft sleeve 3 can still be stably installed on the magnesium alloy tray 1.

[0074] The second aspect of the embodiment of the application provides a vehicle, which comprises a frame 2, a fastener 5 and the battery pack tray structure as any one of the above; the frame 2 is provided with an assembly hole coaxially aligned with the mounting hole; the fastener 5 is arranged in the main body 31 and the assembly hole, and one end of the fastener 5 is connected with the main body 31 and the other end of the fastener 5 is connected with the frame 2; one side of the first annular edge 32 is abutted with the frame 2, and the other side of the first annular edge 32 is abutted with the magnesium alloy tray 1 through an insulating bushing, so that the magnesium alloy tray 1 is arranged in a spaced manner with the frame 2.

[0075] Specifically, the frame 2 described above can be selected as a steel or aluminum frame structure at the bottom of the vehicle body, and the region of the magnesium alloy tray 1 provided with the mounting hole is an installation frame. The frame 2 can be arranged on the top side of the installation frame, so that the assembly hole on the frame 2 is arranged in a spaced manner with the mounting hole. In order to improve the corrosion resistance of the magnesium alloy tray 1, an insulating coating is usually arranged on the surface of the magnesium alloy tray 1. The magnesium alloy tray 1 and the frame 2 are arranged in a spaced manner, so that the magnesium alloy tray 1 and the frame 2 are prevented from rubbing against each other and damaging the insulating coating on the magnesium alloy tray 1 when the vehicle is running.

[0076] The first annular edge 32 is arranged between the magnesium alloy tray 1 and the frame 2, so that the magnesium alloy tray 1 and the frame 2 are physically isolated, and the first annular edge 32 and the magnesium alloy tray 1 are arranged in a spaced manner through an insulating bushing. The magnesium alloy tray 1 and the frame 2 are arranged in a spaced manner through the first annular edge 32, so that the frame 2 is prevented from scratching the magnesium alloy tray 1 and damaging the corrosion-resistant coating on the magnesium alloy tray 1.

[0077] The fastener 5 can be a bolt, the head of the bolt is clamped at the end of the aluminum alloy sleeve 3 away from the frame 2, the shank of the bolt passes through the assembly hole, and a nut is installed on the shank, so that the magnesium alloy tray 1 and the frame 2 are rigidly connected. Of course, the fastener 5 can also be a rivet, one end of the rivet passes through the main body 31, the other end passes through the assembly hole, and then the two ends of the rivet are deformed to rigidly connect the magnesium alloy tray 1 and the frame 2.

[0078] In the vehicle using the battery pack tray structure as described above, the magnesium alloy tray 1 is fixedly connected to the frame 2 through the aluminum alloy sleeve 3 and the fastener 5, the magnesium alloy tray 1 and the frame 2 are isolated from each other by the first annular edge 32, and the aluminum alloy sleeve 3 and the magnesium alloy tray 1 are isolated from each other by the insulating bushing, thereby avoiding galvanic corrosion between the magnesium alloy tray 1 and the frame 2 and the aluminum alloy sleeve 3.

[0079] Referring to Figure 1 In some embodiments, the edge of the magnesium alloy tray 1 is provided with a frame, the mounting hole is formed on the frame, the frame is arranged on the bottom side of the frame 2, and the fastener 5 connects the frame 2 and the frame.

[0080] In this way, the frame does not occupy the space inside the frame 2 on the bottom side of the frame 2, and the mounting hole arranged on the frame avoids interference between the fastener 5 and the battery.

[0081] Specifically, the magnesium alloy tray 1 has a tray body and a frame, the frame is mounted on the edge of the tray body, the frame can be arranged on the bottom side of the tray body, and when the frame is attached to the bottom side of the frame 2 and connected to each other, the tray body is in the same plane as the frame 2; of course, the frame can also be arranged in the same plane as the tray body. The through hole on the frame is used as the mounting hole, and when the frame is attached to the bottom side of the frame 2 and connected to each other, the tray body is on the bottom side of the frame 2. The inside of the frame can be selected to have a space, so that the plate body at the top of the frame is the first plate body 11, and the plate body at the bottom of the frame is the second plate body 12.

[0082] Referring to Figure 2 Figure 3 Figures 1 to 3 Figures 1 to 3 In some embodiments, the end of the main body 31 away from the frame 2 is recessed to form a sink 34, and the end of the fastener 5 is arranged in the sink 34 and connected to the bottom of the sink 34.

[0083] In this way, the end of the fastener 5 is arranged in the sink 34, which has a protective effect on the fastener 5, avoiding direct collision of external foreign objects with the fastener 5.

[0084] Specifically, the main body 31 is recessed towards the frame 2 at the end away from the frame 2 to form a sink 34. If the fastener 5 protrudes from the end of the main body 31 away from the frame 2, the end of the fastener 5 is prone to being damaged by colliding with stones or protrusions on the ground. The end of the fastener 5 is accommodated in the sink 34, so that the fastener 5 is prevented from directly colliding with foreign matter.

[0085] When the fastener 5 is a bolt, the head of the bolt is in the sink 34 and abuts against the bottom of the sink 34, and the shank of the bolt passes through the assembly hole and is connected with a nut. When the fastener 5 is a rivet, one end of the rivet passes through the assembly hole, and the other end of the rivet is in the sink 34 of the main body 31. When the main body 31 includes the first connecting part 311 and the second connecting part 312, the end surface of the first connecting part 311 away from the second connecting part 312 is recessed to form the sink.

[0086] The battery pack tray structure and the vehicle provided by the embodiment of the application are used as follows. The second bushing 42 is sleeved on the second connecting part 312, the second connecting part 312 is inserted into the second hole from the side of the second plate body 12 away from the first plate body 11, the second annular edge 33 abuts against the second plate body 12 through the second bushing 42, the first bushing 41 is sleeved on the first connecting part 311, the first connecting part 311 is inserted into the first hole from the side of the first plate body 11 away from the second plate body 12, the first annular edge 32 abuts against the first plate body 11 through the first bushing 41, and the first connecting part 311 is threadedly connected with the second connecting part 312.

[0087] One end of the fastener 5 passes through the assembly hole, and the other end of the fastener 5 passes through the first connecting part 311 and the second connecting part 312. One end of the fastener 5 abuts against the bottom of the sink 34, and the other end of the fastener 5 is connected with the frame 2. When the fastener 5 is a bolt and a nut, the head of the bolt abuts against the bottom of the sink 34, the shank of the bolt passes through the second connecting part 312, the first connecting part 311 and the assembly hole, the nut is connected with the shank of the bolt and is arranged on the side of the frame 2 away from the aluminum alloy sleeve 3, a back plate is arranged between the nut and the frame 2, and the nut abuts against the frame 2 through the back plate after being tightened, so that the magnesium alloy tray 1 is fixedly connected with the frame 2.

[0088] It has to be noted that, in the present document, relational terms are intended only to convey a possible relationship between elements or

[0089] The foregoing detailed description has set forth various embodiments of the application via the use of specific terminology. However, embodiments thereof can be practiced without the specific details ("every" embodiment) set forth above. In general, the teachings of the present application can be applied to any suitable industrial setting and / or process of this type. The foregoing description, therefore, is not intended to be limiting, but merely illustrative. Further, the herein disclosed subject matter is intended to cover all alternatives, modifications and equivalents. Thus, the scope of the present application should be determined by the appended claims and their legal equivalents, and not by the ability or inability to reduce the present application to practice according to the provisions of the patent statute.

Claims

1. A battery pack tray structure, characterized in that, include: A magnesium alloy tray (1) is used to hold a battery pack, and the magnesium alloy tray (1) is provided with a through mounting hole; The aluminum alloy bushing (3) includes a main body (31) passing through the mounting hole, a first annular edge (32) and a second annular edge (33) disposed at both ends of the main body (31), the first annular edge (32) and the second annular edge (33) being arranged around the periphery of the mounting hole to fix the main body (31) in the mounting hole; An insulating bushing is disposed between the magnesium alloy tray (1) and the aluminum alloy bushing (3) so that the main body (31), the first annular edge (32) and the second annular edge (33) are all insulated from the magnesium alloy tray (1).

2. The battery pack tray structure according to claim 1, characterized in that, The main body (31) includes a first connecting part (311) and a second connecting part (312) with a central opening. The first connecting part (311) is threaded into the second connecting part (312). The ends of the first connecting part (311) and the second connecting part (312) that are far apart from each other form the first annular edge (32) and the second annular edge (33), respectively.

3. The battery pack tray structure according to claim 1, characterized in that, The magnesium alloy tray (1) includes a first plate (11) and a second plate (12) spaced apart. The first plate (11) has a first hole, and the second plate (12) has a second hole. The first hole and the second hole are coaxially arranged, and the main body (31) passes through the first hole and the second hole. The insulating bushing includes a first bushing (41) and a second bushing (42). The first bushing (41) is disposed between the hole wall of the first hole and the main body (31), and extends to the space between the first annular edge (32) and the first plate (11), so that the first annular edge (32) abuts against the first plate (11) through the first bushing (41). The second bushing (42) is disposed between the hole wall of the second hole and the main body (31), and extends between the second annular edge (33) and the second plate (12) so that the second annular edge (33) abuts against the second plate (12) through the second bushing (42).

4. The battery pack tray structure according to claim 3, characterized in that, The outer ring of the first bushing (41) is provided with a first sealing layer (411), and the outer ring of the second bushing (42) is provided with a second sealing layer (421). The first sealant layer (411) is disposed between the first annular edge (32) and the first plate (11), and the second sealant layer (421) is disposed between the second annular edge (33) and the second plate (12).

5. The battery pack tray structure according to claim 4, characterized in that, A first receiving groove is provided on the first annular edge (32), and a part of the first bushing (41) is placed between the first receiving groove and the first plate (11), so that a gap is formed between the first annular edge (32) and the first plate (11) to accommodate the first sealant layer (411).

6. The battery pack tray structure according to claim 4, characterized in that, The second annular edge (33) is provided with a second receiving groove, and a part of the second bushing (42) is placed between the second receiving groove and the second plate (12), so that a gap is formed between the second annular edge (33) and the second plate (12) to accommodate the second sealant layer (421).

7. The battery pack tray structure according to claim 3, characterized in that, The main body (31) has an abutment platform in the portion between the first plate (11) and the second plate (12). A rubber pad (412) is provided between the top of the abutment platform and the bottom of the first plate (11), and the rubber pad (412) abuts against the abutment platform and the first plate (11).

8. A vehicle, characterized in that, Includes a frame (2), fasteners (5), and a battery pack tray structure as described in any one of claims 1 to 7; The frame (2) is provided with mounting holes, which are coaxially aligned with the mounting holes; The fastener (5) passes through the main body (31) and the mounting hole, with one end connected to the main body (31) and the other end connected to the frame (2); One side of the first annular edge (32) abuts against the frame (2), and the other side abuts against the magnesium alloy tray (1) through the insulating bushing, so that the magnesium alloy tray (1) and the frame (2) are spaced apart.

9. The vehicle according to claim 8, characterized in that, The magnesium alloy tray (1) has a frame on its edge, the mounting hole is formed on the frame, the frame is located on the bottom side of the frame (2), and the fastener (5) connects the frame (2) and the frame.

10. The vehicle according to claim 8, characterized in that, The main body (31) has a recessed groove (34) at one end away from the frame (2), and the end of the fastener (5) is placed in the groove (34) and connected to the bottom of the groove (34).

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