Rear frame assembly and vehicle

Abstract

The utility model relates to a rear frame assembly and a vehicle, the rear frame assembly comprises a plurality of mounting parts used for mounting a battery pack and a plurality of mounting parts used for mounting a fuel tank, so that a manufacturer can mount the battery pack or the fuel tank or simultaneously mount the battery pack and the fuel tank on the rear frame assembly according to actual production requirements. The rear frame assembly provided with the battery pack can be applied to a pure electric vehicle (taking electric energy as a vehicle power source); the rear frame assembly provided with the fuel tank can be applied to pure fuel power vehicles (fuel such as oil fuel, hydrogen fuel or ethanol fuel serves as a vehicle power source). The rear frame assembly provided with the battery pack and the fuel tank at the same time can be applied to a hybrid power vehicle (taking electric energy and fuel as a vehicle power source). Therefore, the generalization degree of the rear frame assembly is high.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a rear frame assembly and a vehicle. Background Art

[0002] As one of the vehicle's skeleton structures, the rear frame assembly is used to provide the vehicle with appropriate structural strength, and the rear frame assembly is used to install other vehicle parts, such as fuel tanks, battery packs, and silencer exhaust components.

[0003] However, in the prior art, the structures of rear frame assemblies of pure electric vehicles, hybrid vehicles, and fuel-powered vehicles are different. That is, the degree of commonality of rear frame assemblies in the prior art is low. Different rear frame assemblies require dedicated production equipment and production lines, resulting in a complicated production process, high production difficulty, and a long production cycle. Utility Model Content

[0004] In view of this, the present application provides a rear frame assembly and a vehicle, wherein the rear frame assembly has a high degree of commonality.

[0005] In a first aspect, the present application provides a rear frame assembly, which includes a first longitudinal beam, a second longitudinal beam, a third longitudinal beam, a fourth longitudinal beam, a first cross beam, a second cross beam and a third cross beam; one end of the first cross beam is connected to the first longitudinal beam, and the other end of the first cross beam is connected to the second longitudinal beam; one end of the second cross beam is connected to the first longitudinal beam, and the other end of the second cross beam is connected to the second longitudinal beam; one end of the third cross beam is connected to the first longitudinal beam, and the other end of the third cross beam is connected to the second longitudinal beam; one end of the third longitudinal beam is connected to the first cross beam, and the other end of the third cross beam is connected to the second longitudinal beam one end of the fourth longitudinal beam is connected to the first cross beam, and the other end of the fourth longitudinal beam is connected to the second cross beam; the first longitudinal beam includes a first battery pack mounting portion and a second battery pack mounting portion, the second longitudinal beam includes a third battery pack mounting portion and a fourth battery pack mounting portion, the third longitudinal beam includes a first fuel tank mounting portion, the fourth longitudinal beam includes a second fuel tank mounting portion, the first cross beam includes a third fuel tank mounting portion and a fourth fuel tank mounting portion, the second cross beam includes a fifth fuel tank mounting portion and a sixth fuel tank mounting portion, and the third cross beam includes a seventh fuel tank mounting portion and an eighth fuel tank mounting portion.

[0006] Based on the above, since the rear frame assembly provided by this application includes multiple mounting portions for mounting battery packs and multiple mounting portions for mounting fuel tanks, manufacturers can install battery packs, fuel tanks, or both on the rear frame assembly based on actual production requirements. A rear frame assembly with a battery pack installed can be used in pure electric vehicles (using electricity as the vehicle's power source); a rear frame assembly with a fuel tank installed can be used in pure fuel-powered vehicles (using oil fuel, hydrogen fuel, or ethanol fuel as the vehicle's power source); and a rear frame assembly with both a battery pack and a fuel tank installed can be used in hybrid vehicles (using electricity and fuel as the vehicle's power sources).

[0007] Therefore, compared with the rear frame assemblies in the prior art, the rear frame assembly provided by the present application has a higher degree of universality and can be adapted to pure electric vehicles, pure fuel-powered vehicles and hybrid vehicles. For manufacturers, the number of process flows, production equipment and production lines required for preparing the rear frame assembly is relatively small. Accordingly, the production process will be relatively simplified, the production difficulty will be relatively low, the production cycle will be relatively short, and the utilization rate of the production equipment and production lines owned by the manufacturer will be higher and the production efficiency will be higher.

[0008] Optionally, the first battery pack mounting portion and the second battery pack mounting portion are spaced apart along the extension direction of the first longitudinal beam, and the third battery pack mounting portion and the fourth battery pack mounting portion are spaced apart along the extension direction of the second longitudinal beam; the first battery pack mounting portion and the third battery pack mounting portion are both used to install the same battery pack, or the first battery pack mounting portion, the second battery pack mounting portion, the third battery pack mounting portion and the fourth battery pack mounting portion are all used to install the same battery pack.

[0009] Optionally, the first cross beam, the second cross beam and the third cross beam are spaced apart along the extension direction of the first longitudinal beam, and the first longitudinal beam, the third longitudinal beam, the fourth longitudinal beam and the second longitudinal beam are spaced apart along the direction perpendicular to the extension direction of the first longitudinal beam; the first fuel tank mounting portion, the second fuel tank mounting portion, the fifth fuel tank mounting portion and the sixth fuel tank mounting portion are all used to install the same fuel tank, or the third fuel tank mounting portion, the fourth fuel tank mounting portion, the seventh fuel tank mounting portion and the eighth fuel tank mounting portion are all used to install the same fuel tank.

[0010] Optionally, the first battery pack mounting portion and the third battery pack mounting portion are both located on a side of the first beam away from the second beam; the second battery pack mounting portion and the fourth battery pack mounting portion are both located on a side of the first beam close to the second beam.

[0011] Optionally, the distance between the first fuel tank mounting portion and the first longitudinal beam is equal to the distance between the second fuel tank mounting portion and the second longitudinal beam; the distance between the fifth fuel tank mounting portion and the first longitudinal beam is equal to the distance between the sixth fuel tank mounting portion and the second longitudinal beam.

[0012] Optionally, the distance between the third fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the third fuel tank mounting portion and the second longitudinal beam, the distance between the fourth fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the fourth fuel tank mounting portion and the second longitudinal beam, the distance between the seventh fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the seventh fuel tank mounting portion and the second longitudinal beam, and the distance between the eighth fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the eighth fuel tank mounting portion and the second longitudinal beam.

[0013] Optionally, the thickness of the third crossbeam is smaller than the thickness of the second crossbeam, and the width of the third crossbeam is larger than the width of the second crossbeam.

[0014] Optionally, the rear frame assembly further includes a fourth crossbeam, a fifth crossbeam, and a sixth crossbeam; one end of the fourth crossbeam is connected to the first longitudinal beam, and the other end of the fourth crossbeam is connected to the second longitudinal beam; one end of the fifth crossbeam is connected to the first longitudinal beam, and the other end of the fifth crossbeam is connected to the second longitudinal beam; one end of the sixth crossbeam is connected to the first longitudinal beam, and the other end of the sixth crossbeam is connected to the second longitudinal beam. The first crossbeam includes a first exhaust mounting portion and a second exhaust mounting portion, the second longitudinal beam includes a third exhaust mounting portion, the second crossbeam includes a fourth exhaust mounting portion, the fourth crossbeam includes a fifth exhaust mounting portion, the fifth crossbeam includes a sixth exhaust mounting portion, and the sixth crossbeam includes a seventh exhaust mounting portion.

[0015] Optionally, the first exhaust installation part, the second exhaust installation part, the fourth exhaust installation part and the fifth exhaust installation part are used to install the same silencer exhaust assembly; or, the third exhaust installation part, the fifth exhaust installation part, the sixth exhaust installation part and the seventh exhaust installation part are used to install the same silencer exhaust assembly.

[0016] In a second aspect, the present application provides a vehicle, which includes a rear frame assembly, which is the rear frame assembly described above, and the vehicle includes the technical effects of the rear frame assembly in the above content.

[0017] Optionally, the vehicle may include a battery pack mounted on the rear frame assembly, and accordingly, the vehicle may be a pure electric vehicle.

[0018] Optionally, the vehicle may include a fuel tank mounted to the rear frame assembly, and accordingly, the vehicle may be a fuel-powered vehicle.

[0019] Optionally, the vehicle may include a battery pack and a fuel tank, and the battery pack and the fuel tank are simultaneously installed on the rear frame assembly. Accordingly, the vehicle may be a hybrid vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic structural diagram of a rear frame assembly provided in this application in a specific embodiment;

[0022] Figure 2 This is a schematic diagram of a partial explosion structure of the first longitudinal beam and the second longitudinal beam provided in this application in a specific embodiment;

[0023] Figure 3 It is a partial enlarged structural diagram of the rear frame assembly;

[0024] Figure 4 It is a partially enlarged cross-sectional structural diagram of the rear frame assembly;

[0025] Figure 5 It is a structural schematic diagram of a rear frame assembly in a specific embodiment;

[0026] Figure 6 It is a partial enlarged structural diagram of the rear frame assembly;

[0027] Figure 7 It is a partial enlarged structural diagram of the rear frame assembly;

[0028] Figure 8 is a perspective view of a rear frame assembly in a specific embodiment;

[0029] Figure 9 is a perspective view of a rear frame assembly in another specific embodiment;

[0030] Figure 10 The figure is a partial cross-sectional assembly diagram of the first cross member and the rear floor in a specific embodiment.

[0031] Reference numerals:

[0032] 1- first longitudinal beam;

[0033] 101-first battery pack installation portion;

[0034] 102-second battery pack installation portion;

[0035] 103 - first coil spring front point mounting portion;

[0036] 104-first coil spring disc mounting portion;

[0037] 105-first coil spring shock absorber pin mounting portion;

[0038] 106 - first leaf spring front point mounting portion;

[0039] 107-first leaf spring shock absorber pin mounting portion;

[0040] 108-first leaf spring rear point mounting seat;

[0041] 2- second longitudinal beam;

[0042] 201-third battery pack installation part;

[0043] 202- fourth battery pack installation portion;

[0044] 203-the third fire-extinguishing installation part;

[0045] 204 - second coil spring front point mounting portion;

[0046] 205-second coil spring disc mounting portion;

[0047] 206 - second coil spring shock absorber pin mounting portion;

[0048] 207-second leaf spring front point mounting portion;

[0049] 208-Second leaf spring shock absorber pin mounting portion;

[0050] 209-second leaf spring rear point mounting seat;

[0051] 3- third longitudinal beam;

[0052] 301-first fuel tank mounting portion;

[0053] 302-second seat mounting portion;

[0054] 4- fourth longitudinal beam;

[0055] 401-second fuel tank mounting portion;

[0056] 402-third seat mounting portion;

[0057] 5- first crossbar;

[0058] 501-third fuel tank installation part;

[0059] 502- fourth fuel tank mounting portion;

[0060] 503-first fire extinguishing installation part;

[0061] 504-second fire extinguishing installation part;

[0062] 505-first seat mounting portion;

[0063] 6- Second crossbar;

[0064] 601-Fifth fuel tank installation part;

[0065] 602-sixth fuel tank mounting portion;

[0066] 603-Fourth fire-extinguishing installation part;

[0067] 604-fourth seat mounting portion;

[0068] 605-seat belt installation part;

[0069] 7- third crossbar;

[0070] 701-7th fuel tank installation part;

[0071] 702-eighth fuel tank installation part;

[0072] 8- fourth crossbar;

[0073] 801-Fifth fire-fighting installation part;

[0074] 9-Fifth crossbar;

[0075] 901-sixth fire-extinguishing installation part;

[0076] 10-sixth crossbar;

[0077] 1001-the seventh fire-fighting installation department;

[0078] 1002-accommodation portion;

[0079] 11-fifth longitudinal beam;

[0080] 12-sixth longitudinal beam;

[0081] 1201- spare tire rack installation part;

[0082] 1202-sixth seat mounting portion;

[0083] 20- rear floor. DETAILED DESCRIPTION

[0084] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0085] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0086] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0087] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0088] In a first aspect, an embodiment of the present application provides a rear frame assembly, which is applied in the field of vehicle technology. Figure 1 As shown, the rear frame assembly includes a first longitudinal beam 1 , a second longitudinal beam 2 , a third longitudinal beam 3 , a fourth longitudinal beam 4 , a first cross beam 5 , a second cross beam 6 and a third cross beam 7 .

[0089] In the drawings herein, direction X represents the longitudinal direction of the rear frame assembly (the direction from the rear end of the vehicle to the front end of the vehicle), direction Y represents the lateral direction of the rear frame assembly (the direction from the side of the vehicle to the other side of the vehicle), and direction Z represents the height direction of the rear frame assembly (the direction from the bottom of the vehicle to the top of the vehicle). Directions X, Y, and Z are perpendicular to each other.

[0090] Please refer to Figure 1 As shown, in terms of structural connection, one end of the first crossbeam 5 is connected to the first longitudinal beam 1, and the other end of the first crossbeam 5 is connected to the second longitudinal beam 2, one end of the second crossbeam 6 is connected to the first longitudinal beam 1, and the other end of the second crossbeam 6 is connected to the second longitudinal beam 2; one end of the third crossbeam 7 is connected to the first longitudinal beam 1, and the other end of the third crossbeam 7 is connected to the second longitudinal beam 2; one end of the third longitudinal beam 3 is connected to the first crossbeam 5, and the other end of the third longitudinal beam 3 is connected to the second crossbeam 6; one end of the fourth longitudinal beam 4 is connected to the first crossbeam 5, and the other end of the fourth longitudinal beam 4 is connected to the second crossbeam 6.

[0091] Please refer to Figure 2 As shown, the first longitudinal beam 1 includes a first battery pack mounting portion 101 and a second battery pack mounting portion 102, and the second longitudinal beam 2 includes a third battery pack mounting portion 201 and a fourth battery pack mounting portion 202. Figure 3As shown, the third longitudinal beam 3 includes a first fuel tank mounting portion 301, the fourth longitudinal beam 4 includes a second fuel tank mounting portion 401, the first cross beam 5 includes a third fuel tank mounting portion 501 and a fourth fuel tank mounting portion 502, the second cross beam 6 includes a fifth fuel tank mounting portion 601 and a sixth fuel tank mounting portion 602, and the third cross beam 7 includes a seventh fuel tank mounting portion 701 and an eighth fuel tank mounting portion 702.

[0092] According to the above, since the rear frame assembly in the embodiment includes multiple mounting portions for mounting battery packs and multiple mounting portions for mounting fuel tanks, manufacturers can install battery packs, fuel tanks, or both on the rear frame assembly according to actual production requirements. A rear frame assembly with a battery pack installed can be used in pure electric vehicles (using electricity as the vehicle's power source); a rear frame assembly with a fuel tank installed can be used in pure fuel-powered vehicles (using oil fuel, hydrogen fuel, or ethanol fuel as the vehicle's power source); and a rear frame assembly with both a battery pack and a fuel tank installed can be used in hybrid vehicles (using electricity and fuel as the vehicle's power sources).

[0093] In the prior art, the structures of rear frame assemblies for vehicles of different powertrain types vary, requiring manufacturers to utilize specialized production processes, equipment, and production lines, among other specialized means of production. To meet market demand for vehicles with diverse powertrain types, manufacturers may need a variety of production processes, equipment, and production lines to produce rear frame assemblies suitable for these diverse types of vehicles. This results in complex production processes, increased production difficulty, and long production cycles. In response to fluctuating vehicle market demand, if demand for one powertrain type is low, demand for rear frame assemblies suitable for that type of vehicle will also be low, resulting in reduced availability of the production equipment and production lines needed to produce that rear frame assembly. If demand for another powertrain type increases, demand for rear frame assemblies suitable for that type of vehicle will also increase, leading to a shortage of production equipment and production lines needed to produce that rear frame assembly, resulting in reduced production efficiency.

[0094] Therefore, compared with the rear frame assembly in the prior art, the rear frame assembly provided in the embodiment has a higher degree of universality and can be adapted to pure electric vehicles, pure fuel-powered vehicles and hybrid vehicles. For the manufacturer, the number of process flows, production equipment and production lines required for preparing the rear frame assembly is relatively small. Accordingly, the production process will be relatively simple, the production difficulty will be relatively low, the production cycle will be relatively short, and the utilization rate of the production equipment and production lines owned by the manufacturer will be higher and the production efficiency will be higher.

[0095] For pure electric vehicles, at least two of the first battery pack mounting portion 101, the second battery pack mounting portion 102, the third battery pack mounting portion 201, and the fourth battery pack mounting portion 202 can be used to mount the required battery pack. Similarly, for hybrid vehicles, at least two of the first battery pack mounting portion 101, the second battery pack mounting portion 102, the third battery pack mounting portion 201, and the fourth battery pack mounting portion 202 can be used to mount the required battery pack. The battery pack mounting location on the rear frame assembly of a pure electric vehicle can be the same as or different from that of a hybrid vehicle. The specific mounting location of the battery pack depends on factors such as the size and structural strength of the battery pack, and the layout of other vehicle components to be mounted on the rear frame assembly. Therefore, manufacturers can flexibly select the specific mounting location of the battery pack on the rear frame assembly based on actual needs, meaning that the rear frame assembly has a high degree of commonality in terms of battery pack mounting.

[0096] Furthermore, for a pure fuel-powered vehicle, at least two of the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 can be used to mount the required fuel tank. Similarly, for a hybrid vehicle, at least two of the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 can be used to mount the required fuel tank. The mounting location of the fuel tank on the rear frame assembly of a pure fuel-powered vehicle and the mounting location of the fuel tank on the rear frame assembly of a hybrid vehicle can be the same or different. The specific mounting location of the fuel tank depends on factors such as the size and structural strength of the fuel tank and the layout of other vehicle components to be mounted on the rear frame assembly. Therefore, according to actual needs, the manufacturer can flexibly select the specific installation location of the fuel tank on the rear frame assembly, that is, the rear frame assembly has a high degree of commonality in the installation of the fuel tank.

[0097] Alternatively, see Figure 2 As shown, the first battery pack mounting portion 101 and the second battery pack mounting portion 102 are spaced apart along the extension direction (direction X) of the first longitudinal beam 1 , and the third battery pack mounting portion 201 and the fourth battery pack mounting portion 202 are spaced apart along the extension direction (direction X) of the second longitudinal beam 2 .

[0098] Typically, the range supported by a hybrid vehicle's battery pack is smaller than that supported by a pure electric vehicle's battery pack. Accordingly, the required battery pack installation volume for a hybrid vehicle is smaller than that required for a pure electric vehicle. Furthermore, while ensuring reliable structural strength, the number of battery pack mounting sections used in the rear frame assembly of a hybrid vehicle is smaller than that used in the rear frame assembly of a pure electric vehicle.

[0099] If the rear frame assembly is used in a hybrid vehicle, the first battery pack mounting portion 101 and the third battery pack mounting portion 201 can both be installed with the same relatively small battery pack. In other embodiments, if the rear frame assembly is used in a hybrid vehicle, the second battery pack mounting portion 102 and the fourth battery pack mounting portion 202 can both be installed with the same relatively small battery pack. If the rear frame assembly is used in a pure electric vehicle, the first battery pack mounting portion 101, the second battery pack mounting portion 102, the third battery pack mounting portion 201, and the fourth battery pack mounting portion 202 can all be installed with the same relatively large battery pack. The description of "comparison of the relative sizes of battery packs" in this paragraph applies to the comparison between battery packs for hybrid vehicles and battery packs for pure electric vehicles.

[0100] In other embodiments, the volumes of the battery packs installed for pure electric vehicles with different ranges may also vary. For example, if the rear frame assembly is used for a pure electric vehicle with a relatively short range, the first and third battery pack mounting portions 101 and 201 may both be equipped with the same relatively small battery pack, or the second and fourth battery pack mounting portions 102 and 202 may both be equipped with the same relatively small battery pack. If the rear frame assembly is used for a pure electric vehicle with a relatively long range, the first, second, third, and fourth battery pack mounting portions 101, 102, 201, and 202 may all be equipped with the same relatively large battery pack. The comparison of the relative sizes of battery packs described in this paragraph applies to comparisons between battery packs for pure electric vehicles with different ranges.

[0101] In other embodiments, the battery pack sizes for hybrid vehicles with different ranges may also vary. For example, if the rear frame assembly is used in a hybrid vehicle with a relatively short range, the first and third battery pack mounting portions 101 and 201 may both be equipped with the same, relatively small battery pack, or the second and fourth battery pack mounting portions 102 and 202 may both be equipped with the same, relatively small battery pack. If the rear frame assembly is used in a hybrid vehicle with a relatively long range, the first, second, third, and fourth battery pack mounting portions 101, 102, 201, and 202 may all be equipped with the same, relatively large battery pack. The comparison of relative battery pack sizes described in this paragraph applies to comparisons between battery packs in hybrid vehicles with different ranges.

[0102] The first battery pack installation portion 101 and the second battery pack installation portion 102 are both located at the bottom of the first longitudinal beam 1 , and the third battery pack installation portion 201 and the fourth battery pack installation portion 202 are both located at the bottom of the second longitudinal beam 2 .

[0103] In other embodiments (not shown in the drawings), at least one of the first battery pack mounting portion 101 and the second battery pack mounting portion 102 may be located on a side of the first longitudinal beam 1 .

[0104] In other embodiments (not shown in the figures), at least one of the first battery pack mounting portion 101 and the second battery pack mounting portion 102 may be located on the top of the first longitudinal beam 1 .

[0105] In other embodiments (not shown in the figures), at least one of the third battery pack mounting portion 201 and the fourth battery pack mounting portion 202 may be located on a side of the second longitudinal beam 2 .

[0106] In other embodiments (not shown in the figures), at least one of the third battery pack mounting portion 201 and the fourth battery pack mounting portion 202 may be located on the top of the second longitudinal beam 2 .

[0107] Alternatively, see Figure 3As shown, the first crossbeam 5, the second crossbeam 6, and the third crossbeam 7 are spaced apart along the extension direction (direction X) of the first longitudinal beam 1. Alternatively, the first crossbeam 5, the second crossbeam 6, and the third crossbeam 7 are spaced apart along the extension direction (direction X) of the second longitudinal beam 2. The first longitudinal beam 1, the third longitudinal beam 3, the fourth longitudinal beam 4, and the second longitudinal beam 2 are spaced apart along direction Y. As can be seen, the distance between the fuel tank mounting portion on the first crossbeam 5 and the fuel tank mounting portion on the third crossbeam 7 is greater than the distance between the fuel tank mounting portion on the third longitudinal beam 3 and the fuel tank mounting portion on the second crossbeam 6. Alternatively, the distance between the fuel tank mounting portion on the first crossbeam 5 and the fuel tank mounting portion on the third crossbeam 7 is greater than the distance between the fuel tank mounting portion on the fourth longitudinal beam 4 and the fuel tank mounting portion on the second crossbeam 6.

[0108] Typically, the range that a hybrid vehicle's fuel tank can provide is shorter than that of a purely fuel-powered vehicle. Accordingly, the required fuel tank installation volume for a hybrid vehicle is smaller than that required for a purely fuel-powered vehicle. Furthermore, while ensuring reliable structural strength, the number of fuel tank mounting portions used in the rear frame assembly of a hybrid vehicle is smaller than that used in the rear frame assembly of a purely fuel-powered vehicle.

[0109] If the rear frame assembly is used in a hybrid vehicle, the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 can all be used to mount the same, relatively small fuel tank. If the rear frame assembly is used in a purely fuel-powered vehicle, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the seventh fuel tank mounting portion 701, and the eighth fuel tank mounting portion 702 can all be used to mount the same, relatively large fuel tank. The description of "comparison of the relative sizes of fuel tanks" in this paragraph applies to comparisons between fuel tanks in hybrid vehicles and fuel tanks in purely fuel-powered vehicles.

[0110] In other embodiments, the volumes of the corresponding fuel tanks installed for fuel-only vehicles with different ranges may also be different. For example, if the rear frame assembly is used for a fuel-only vehicle with a relatively short range, the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 may all be used to mount the same relatively small fuel tank. Alternatively, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 may all be used to mount the same relatively small fuel tank. Alternatively, the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the seventh fuel tank mounting portion 701, and the eighth fuel tank mounting portion 702 may all be used to mount the same relatively small fuel tank. Alternatively, the fifth fuel tank mounting portion 601, the sixth fuel tank mounting portion 602, and the seventh fuel tank mounting portion 701 and the eighth fuel tank mounting portion 702 may all be used to mount the same relatively small fuel tank. If the rear frame assembly is used in a purely fuel-powered vehicle with a relatively long range, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the seventh fuel tank mounting portion 701, and the eighth fuel tank mounting portion 702 are all used to mount the same, relatively large fuel tank. The description of "comparison of relative fuel tank installation volumes" in this paragraph applies to comparisons of fuel tanks in purely fuel-powered vehicles with different ranges.

[0111] In other embodiments, the volumes of the fuel tanks installed for hybrid vehicles with different ranges may also be different. For example, if the rear frame assembly is used for a hybrid vehicle with a relatively short range, the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 may all be used to mount the same relatively small fuel tank. Alternatively, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the fifth fuel tank mounting portion 601, and the sixth fuel tank mounting portion 602 may all be used to mount the same relatively small fuel tank. Alternatively, the first fuel tank mounting portion 301, the second fuel tank mounting portion 401, the seventh fuel tank mounting portion 701, and the eighth fuel tank mounting portion 702 may all be used to mount the same relatively small fuel tank. Alternatively, the fifth fuel tank mounting portion 601, the sixth fuel tank mounting portion 602, and the seventh fuel tank mounting portion 701 and the eighth fuel tank mounting portion 702 may all be used to mount the same relatively small fuel tank. If the rear frame assembly is used in a hybrid vehicle with a relatively long range, the third fuel tank mounting portion 501, the fourth fuel tank mounting portion 502, the seventh fuel tank mounting portion 701, and the eighth fuel tank mounting portion 702 can all be used to mount the same, relatively large fuel tank. The description of "comparing the relative sizes of fuel tanks" in this paragraph applies to comparing fuel tanks in hybrid vehicles with different ranges.

[0112] Among them, the first fuel tank mounting portion 301 can be located at the bottom of the third longitudinal beam 3, the second fuel tank mounting portion 401 can be located at the bottom of the fourth longitudinal beam 4, the third fuel tank mounting portion 501 and the fourth fuel tank mounting portion 502 can be located at the bottom of the first cross beam 5, the fifth fuel tank mounting portion 601 and the sixth fuel tank mounting portion 602 can be located at the bottom of the second cross beam 6, and the seventh fuel tank mounting portion 701 and the eighth fuel tank mounting portion 702 can be located at the bottom of the third cross beam 7.

[0113] In other embodiments (not shown in the drawings), the first fuel tank mounting portion 301 may be located on the side or top of the third longitudinal beam 3 .

[0114] In other embodiments (not shown in the drawings), the second fuel tank mounting portion 401 may be located on the side or top of the fourth longitudinal beam 4 .

[0115] In other embodiments (not shown in the drawings), at least one of the third fuel tank mounting portion 501 and the fourth fuel tank mounting portion 502 may be located on a side of the first crossbeam 5 .

[0116] In other embodiments (not shown in the drawings), at least one of the third fuel tank mounting portion 501 and the fourth fuel tank mounting portion 502 may be located on the top of the first crossbeam 5 .

[0117] In other embodiments (not shown in the drawings), at least one of the fifth fuel tank mounting portion 601 and the sixth fuel tank mounting portion 602 may be located on a side of the second cross beam 6 .

[0118] In other embodiments (not shown in the drawings), at least one of the fifth fuel tank mounting portion 601 and the sixth fuel tank mounting portion 602 may be located on the top of the second cross beam 6 .

[0119] In other embodiments (not shown in the drawings), at least one of the seventh fuel tank mounting portion 701 and the eighth fuel tank mounting portion 702 may be located on a side of the third cross beam.

[0120] In other embodiments (not shown), at least one of the seventh fuel tank mounting portion 701 and the eighth fuel tank mounting portion 702 may be located on top of the third cross beam.

[0121] Optionally, the first battery pack mounting portion 101 and the third battery pack mounting portion 201 are both located on the side of the first cross member 5 facing away from the second cross member 6. Alternatively, the first longitudinal beam 1 includes two portions separated by the first cross member 5, one portion being close to the second cross member 6 and the other being distant from the second cross member 6, and the first battery pack mounting portion 101 is located in the portion of the first longitudinal beam 1 that is distant from the second cross member 6. Similarly, the second longitudinal beam 2 includes two portions separated by the first cross member 5, one portion being close to the second cross member 6 and the other being distant from the second cross member 6, and the third battery pack mounting portion 201 is located in the portion of the second longitudinal beam 2 that is distant from the second cross member 6. If the rear frame assembly is used in a hybrid vehicle, the battery packs mounted on the first battery pack mounting portion 101 and the third battery pack mounting portion 201 can avoid the fuel tank mounted on the second cross member 6 to reduce the possibility of structural interference between the battery packs and the fuel tank.

[0122] The second battery pack mounting portion 102 and the fourth battery pack mounting portion 202 are both located on the side of the first cross member 5 near the second cross member 6. Alternatively, the first longitudinal member 1 comprises two portions separated by the first cross member 5, one portion near the second cross member 6 and the other portion away from the second cross member 6, with the second battery pack mounting portion 102 located in the portion of the first longitudinal member 1 near the second cross member 6. Similarly, the second longitudinal member 2 comprises two portions separated by the first cross member 5, one portion near the second cross member 6 and the other portion away from the second cross member 6, with the fourth battery pack mounting portion 202 located in the portion of the second longitudinal member 2 near the second cross member 6. If the rear frame assembly is used in a pure electric vehicle, there is no need to consider structural interference with the fuel tank, and the battery pack can be designed to be relatively large. Therefore, the battery pack mounting portion can be located closer to the second cross member 6, meaning that the battery pack mounting portion can include the second battery pack mounting portion 102 and the fourth battery pack mounting portion 202.

[0123] Optionally, the distance between the first fuel tank mounting portion 301 and the first longitudinal beam 1 is equal to the distance between the second fuel tank mounting portion 302 and the second longitudinal beam 2; and the distance between the fifth fuel tank mounting portion 601 and the first longitudinal beam 1 is equal to the distance between the sixth fuel tank mounting portion 602 and the second longitudinal beam 2. With this arrangement, if the rear frame assembly is used in a hybrid vehicle, the installed fuel tanks are more evenly distributed relative to the rear frame assembly, which helps improve the hybrid vehicle's balance during operation and provides a better driving experience for the user.

[0124] Optionally, the distance between the third fuel tank mounting portion 501 and the first longitudinal beam 1 is smaller than the distance between the third fuel tank mounting portion 501 and the second longitudinal beam 2; the distance between the fourth fuel tank mounting portion 502 and the first longitudinal beam 1 is smaller than the distance between the fourth fuel tank mounting portion 502 and the second longitudinal beam 2; the distance between the seventh fuel tank mounting portion 701 and the first longitudinal beam 1 is smaller than the distance between the seventh fuel tank mounting portion 701 and the second longitudinal beam 2; and the distance between the eighth fuel tank mounting portion 702 and the first longitudinal beam 1 is smaller than the distance between the eighth fuel tank mounting portion 702 and the second longitudinal beam 2. With this arrangement, if the rear frame assembly is used in a fuel-powered vehicle, the installed fuel tank is offset relative to the rear frame assembly in direction Y. The fuel tank can avoid the transmission assembly of the fuel-powered vehicle and can balance the center of gravity of other components of the fuel-powered vehicle that are offset in direction Y, thereby improving the balance performance of the fuel-powered vehicle during operation.

[0125] Alternatively, see Figure 4 As shown, in direction Z, the thickness of the third cross-member 7 is less than that of the second cross-member 6. For pure electric and hybrid vehicles, the thinner third cross-member 7 allows clearance for the vehicle's drive motor. The width of the third cross-member 7 is greater than that of the second cross-member 6. In this configuration, the thinner but wider third cross-member 7 still maintains high structural strength.

[0126] Alternatively, see Figure 4 As shown, the distance W between the third crossbeam 7 and the second crossbeam 6 in the longitudinal direction (direction X) is 250 mm to 280 mm. If the vehicle is a pure electric vehicle or a hybrid vehicle, the third crossbeam 7 can avoid the vehicle's drive motor.

[0127] Alternatively, see Figure 5As shown, the rear frame assembly further includes a fourth crossbeam 8, a fifth crossbeam 9, and a sixth crossbeam 10. One end of the fourth crossbeam 8 is connected to the first longitudinal beam 1, and the other end of the fourth crossbeam 8 is connected to the second longitudinal beam 2. One end of the fifth crossbeam 9 is connected to the first longitudinal beam 1, and the other end of the fifth crossbeam 9 is connected to the second longitudinal beam 2. One end of the sixth crossbeam 10 is connected to the first longitudinal beam 1, and the other end of the sixth crossbeam 10 is connected to the second longitudinal beam 2. Among them, the first crossbeam 5 includes a first exhaust mounting portion 503 and a second exhaust mounting portion 504, the second longitudinal beam 2 includes a third exhaust mounting portion 203, the second crossbeam 6 includes a fourth exhaust mounting portion 603, the fourth crossbeam 8 includes a fifth exhaust mounting portion 801, the fifth crossbeam 9 includes a sixth exhaust mounting portion 901, and the sixth crossbeam 10 includes a seventh exhaust mounting portion 1001.

[0128] Generally, a rear frame assembly of a fuel-powered vehicle requires installation of a muffler exhaust assembly, which is used to discharge exhaust gases generated by fuel combustion and reduce noise generated during the exhaust process. Because the fuel tank mounting portion of a hybrid vehicle's rear frame assembly is located differently from that of a purely fuel-powered vehicle, the location of the muffler exhaust mounting portion of the hybrid vehicle's rear frame assembly is also different from that of a purely fuel-powered vehicle.

[0129] The rear frame assembly provided in the embodiment includes multiple exhaust mounting portions for mounting a muffler exhaust assembly. Therefore, manufacturers can select an appropriate number and location of exhaust mounting portions on the rear frame assembly based on the type of vehicle being manufactured (hybrid or pure fuel-powered) to install the appropriate muffler exhaust assembly. Therefore, the rear frame assembly in the embodiment has a high degree of commonality. The technical benefits of this high degree of commonality have been described above and will not be repeated here.

[0130] Optionally, if the rear frame assembly is applied to a purely fuel-powered vehicle, the first exhaust mounting portion 503 , the second exhaust mounting portion 504 , the fourth exhaust mounting portion 603 and the fifth exhaust mounting portion 801 may be used to mount the same muffler exhaust assembly.

[0131] Optionally, if the rear frame assembly is applied to a hybrid vehicle, the third exhaust mounting portion 203 , the fifth exhaust mounting portion 801 , the sixth exhaust mounting portion 901 and the seventh exhaust mounting portion 1001 may be used to mount the same muffler exhaust assembly.

[0132] Alternatively, see Figure 5As shown, the rear frame assembly also includes a fourth crossbeam 8, a fifth crossbeam 9, a fifth longitudinal beam 11 and a sixth longitudinal beam 12; one end of the fourth crossbeam 8 is connected to the first longitudinal beam 1, the other end of the fourth crossbeam 8 is connected to the second longitudinal beam 2, one end of the fifth crossbeam 9 is connected to the first longitudinal beam 1, and the other end of the fifth crossbeam 9 is connected to the second longitudinal beam 2. One end of the fifth longitudinal beam 11 is connected to the fourth crossbeam 8, and the other end of the fifth longitudinal beam 11 is connected to the fifth crossbeam 9. One end of the sixth longitudinal beam 12 is connected to the fourth crossbeam 8, and the other end of the fourth longitudinal beam 4 is connected to the fifth crossbeam 9. Under this arrangement, the structural strength of the rear frame assembly is relatively high. Among them, please refer to Figure 6 As shown, the sixth longitudinal beam 12 includes a spare tire rack mounting portion 1201 , and the spare tire rack mounting portion 1201 is used to mount a spare tire rack, and the spare tire rack is used to mount a spare tire.

[0133] In other embodiments (not shown in the figures), the fifth longitudinal beam 11 may include a spare tire rack mounting portion.

[0134] In other embodiments (not shown in the figures), both the fifth longitudinal beam 11 and the sixth longitudinal beam 12 include a spare tire rack mounting portion.

[0135] Alternatively, see Figure 5 As shown, the rear frame assembly further includes a sixth cross member 10, one end of which is connected to the first longitudinal member 1 and the other end of which is connected to the second longitudinal member 2. The sixth cross member 10 includes a recessed receiving portion 1002 for accommodating a portion of the spare tire. This arrangement improves the compactness of the vehicle structure, keeping the vehicle dimensions within an appropriate range and ensuring good performance.

[0136] Alternatively, see Figure 7 As shown, the first cross member 5 has two first seat mounting portions 505, the third longitudinal member 3 has one second seat mounting portion 302, the fourth longitudinal member 4 has one third seat mounting portion 402, and the second cross member 6 has two fourth seat mounting portions 604. The first seat mounting portion 505, the second seat mounting portion 302, the third seat mounting portion 402, and the fourth seat mounting portion 604 are used to mount seats.

[0137] Alternatively, see Figure 7 As shown, the fifth longitudinal beam 11 has two fifth seat mounting portions, and the sixth longitudinal beam 12 has two sixth seat mounting portions 1202. The fifth seat mounting portion and the sixth seat mounting portion 1202 are used to mount another seat.

[0138] Alternatively, see Figure 7 As shown, the second cross beam 6 has two seat belt mounting portions 605 , and the seat belt mounting portions 605 are used to install seat belts.

[0139] Alternatively, see Figure 8 As shown, the first longitudinal member 1 includes a first coil spring front point mounting portion 103, a first coil spring plate mounting portion 104, and a first coil spring damper pin mounting portion 105. The second longitudinal member 2 includes a second coil spring front point mounting portion 204, a second coil spring plate mounting portion 205, and a second coil spring damper pin mounting portion 206. In this configuration, the first and second longitudinal members 1 and 2 can be used to mount corresponding coil spring rear suspension assemblies (which provide shock absorption for the vehicle).

[0140] Optionally, two ends of the third cross beam 7 correspond to the first coil spring disk mounting portion 104 and the second coil spring disk mounting portion 205 respectively. This arrangement is beneficial to the force transmission of the internal structure of the rear frame assembly.

[0141] Alternatively, see Figure 9 As shown, the first longitudinal beam 1 includes a first leaf spring front mounting portion 106, a first leaf spring damper pin mounting portion 107, and a first leaf spring rear mounting seat 108. The second longitudinal beam 2 includes a second leaf spring front mounting portion 207, a second leaf spring damper pin mounting portion 208, and a second leaf spring rear mounting seat 209. With this configuration, the first and second longitudinal beams 1 and 2 can be used to mount corresponding leaf spring rear suspension assemblies (which provide shock absorption for the vehicle).

[0142] Alternatively, see Figure 10 As shown, the first cross beam 5 includes a bent structure. The first cross beam 5 and the rear floor 20 are combined to form a frame structure, and the structural strength of the frame structure is relatively high.

[0143] Optionally, any of the above-mentioned cross beams and longitudinal beams can be combined with the rear floor to form a frame structure to improve the structural strength of the rear frame assembly.

[0144] Optionally, any of the above-mentioned cross beams and longitudinal beams is provided with a reinforcing rib structure to improve the structural strength of the rear frame assembly.

[0145] In a second aspect, an embodiment of the present application provides a vehicle, which includes the rear frame assembly described above. Therefore, the vehicle also includes the technical effects of the rear frame assembly described above, which will not be repeated here.

[0146] Optionally, the vehicle may include a battery pack, which is mounted on the rear frame assembly. Accordingly, the vehicle may be a pure electric vehicle, and the mounting location of the battery pack on the rear frame assembly may refer to the above content.

[0147] Optionally, the vehicle may include a fuel tank, which is mounted on the rear frame assembly. Accordingly, the vehicle may be a fuel-powered vehicle, and the mounting position of the fuel tank on the rear frame assembly may refer to the above-mentioned content.

[0148] Optionally, the vehicle may include a battery pack and a fuel tank, and the battery pack and the fuel tank are simultaneously installed on the rear frame assembly. Accordingly, the vehicle may be a hybrid vehicle, and the installation location of the battery pack on the rear frame assembly refers to the above content, and the installation location of the fuel tank on the rear frame assembly refers to the above content.

Claims

1. A rear frame assembly, characterized in that: including a first longitudinal beam, a second longitudinal beam, a third longitudinal beam, a fourth longitudinal beam, a first transverse beam, a second transverse beam and a third transverse beam; One end of the first crossbeam is connected to the first longitudinal beam, and the other end of the first crossbeam is connected to the second longitudinal beam; One end of the second cross beam is connected to the first longitudinal beam, and the other end of the second cross beam is connected to the second longitudinal beam; One end of the third cross beam is connected to the first longitudinal beam, and the other end of the third cross beam is connected to the second longitudinal beam; One end of the third longitudinal beam is connected to the first transverse beam, and the other end of the third longitudinal beam is connected to the second transverse beam; One end of the fourth longitudinal beam is connected to the first transverse beam, and the other end of the fourth longitudinal beam is connected to the second transverse beam; The first longitudinal beam includes a first battery pack mounting portion and a second battery pack mounting portion, the second longitudinal beam includes a third battery pack mounting portion and a fourth battery pack mounting portion, the third longitudinal beam includes a first fuel tank mounting portion, the fourth longitudinal beam includes a second fuel tank mounting portion, the first cross beam includes a third fuel tank mounting portion and a fourth fuel tank mounting portion, the second cross beam includes a fifth fuel tank mounting portion and a sixth fuel tank mounting portion, and the third cross beam includes a seventh fuel tank mounting portion and an eighth fuel tank mounting portion.

2. The rear frame assembly according to claim 1, wherein: The first battery pack mounting portion and the second battery pack mounting portion are spaced apart along the extending direction of the first longitudinal beam, and the third battery pack mounting portion and the fourth battery pack mounting portion are spaced apart along the extending direction of the second longitudinal beam; The first battery pack mounting portion and the third battery pack mounting portion are both used to mount the same battery pack, or the first battery pack mounting portion, the second battery pack mounting portion, the third battery pack mounting portion and the fourth battery pack mounting portion are all used to mount the same battery pack.

3. The rear frame assembly according to claim 1, wherein: The first cross beam, the second cross beam and the third cross beam are spaced apart along the extending direction of the first longitudinal beam, and the first longitudinal beam, the third longitudinal beam, the fourth longitudinal beam and the second longitudinal beam are spaced apart along a direction perpendicular to the extending direction of the first longitudinal beam; The first fuel tank mounting portion, the second fuel tank mounting portion, the fifth fuel tank mounting portion, and the sixth fuel tank mounting portion are all used to mount the same fuel tank, or the third fuel tank mounting portion, the fourth fuel tank mounting portion, the seventh fuel tank mounting portion, and the eighth fuel tank mounting portion are all used to mount the same fuel tank.

4. The rear frame assembly according to claim 1, wherein: The first battery pack mounting portion and the third battery pack mounting portion are both located on a side of the first crossbeam facing away from the second crossbeam; The second battery pack mounting portion and the fourth battery pack mounting portion are both located on a side of the first crossbeam close to the second crossbeam.

5. The rear frame assembly according to claim 1, wherein: the distance between the first fuel tank mounting portion and the first longitudinal beam is equal to the distance between the second fuel tank mounting portion and the second longitudinal beam; A distance between the fifth fuel tank mounting portion and the first longitudinal beam is equal to a distance between the sixth fuel tank mounting portion and the second longitudinal beam.

6. The rear frame assembly according to claim 1, wherein: The distance between the third fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the third fuel tank mounting portion and the second longitudinal beam, the distance between the fourth fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the fourth fuel tank mounting portion and the second longitudinal beam, the distance between the seventh fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the seventh fuel tank mounting portion and the second longitudinal beam, and the distance between the eighth fuel tank mounting portion and the first longitudinal beam is smaller than the distance between the eighth fuel tank mounting portion and the second longitudinal beam.

7. The rear frame assembly according to any one of claims 1 to 6, characterized in that: The thickness of the third crossbeam is smaller than that of the second crossbeam, and the width of the third crossbeam is larger than that of the second crossbeam.

8. The rear frame assembly according to any one of claims 1 to 6, characterized in that: Also included are a fourth crossbar, a fifth crossbar, and a sixth crossbar; One end of the fourth cross beam is connected to the first longitudinal beam, and the other end of the fourth cross beam is connected to the second longitudinal beam; One end of the fifth cross beam is connected to the first longitudinal beam, and the other end of the fifth cross beam is connected to the second longitudinal beam; One end of the sixth cross beam is connected to the first longitudinal beam, and the other end of the sixth cross beam is connected to the second longitudinal beam; The first crossbeam includes a first exhaust installation portion and a second exhaust installation portion, the second longitudinal beam includes a third exhaust installation portion, the second crossbeam includes a fourth exhaust installation portion, the fourth crossbeam includes a fifth exhaust installation portion, the fifth crossbeam includes a sixth exhaust installation portion, and the sixth crossbeam includes a seventh exhaust installation portion.

9. The rear frame assembly according to claim 8, wherein: The first exhaust installation portion, the second exhaust installation portion, the fourth exhaust installation portion and the fifth exhaust installation portion are used to install the same silencer exhaust assembly; Alternatively, the third exhaust installation portion, the fifth exhaust installation portion, the sixth exhaust installation portion and the seventh exhaust installation portion are used to install the same silencer exhaust assembly.

10. A vehicle, characterized in that: comprising a rear frame assembly, wherein the rear frame assembly is the rear frame assembly according to any one of claims 1 to 9; The vehicle further includes a battery pack mounted on the rear frame assembly, and / or the vehicle further includes a fuel tank mounted on the rear frame assembly.

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