Underbody structure and vehicle

Abstract

An underbody structure and a vehicle are provided. The underbody structure includes a rocker beam and an exhaust pipe, the rocker beam having a first storage space formed therein, and at least a portion of the exhaust pipe is stored in the first storage space.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to Chinese Patent Application No. 202211436684.0, entitled "Underbody Structure and Vehicle," filed on November 16, 2022. The entire contents of the above-referenced application are incorporated herein by reference.

[0002] Technical Field The present disclosure relates to the field of vehicles, and more particularly to underbody structures and vehicles. [Background technology]

[0003] In the prior art, an exhaust pipe mounting piece and a battery mounting piece are provided on the floor of the vehicle body, and a storage space for storing a core module is provided inside the battery mounting piece. The exhaust pipe mounting piece is provided with an avoidance groove on the side edge of the battery mounting piece, and the avoidance groove surrounds a part of the exhaust pipe, allowing the battery pack and exhaust pipe to be arranged side by side in the short direction. In this way, the exhaust pipe and battery pack occupy the space under the floor of the vehicle body, and the battery pack cannot make full use of the space under the floor of the vehicle body. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide an underbody structure and vehicle that maximizes the space available for the battery pack. [Means for solving the problem]

[0005] In order to achieve the above object, the present disclosure provides an underbody structure, the underbody structure comprising: a rocker beam, the rocker beam having a first storage space formed therein; an exhaust pipe, at least a portion of which is accommodated in the first accommodation space; Includes:

[0006] Optionally, the rocker beam includes a first beam body and a second beam body, the first beam body connected to the second beam body, the first beam body and the second beam body being disposed opposite to each other to form a first storage space.

[0007] Optionally, the first beam member is removably connected to the second beam member.

[0008] Optionally, a first arc-shaped groove is formed in the first beam member, a second arc-shaped groove is formed in the second beam member, and the first arc-shaped groove corresponds to the second arc-shaped groove and forms a first receiving space.

[0009] Optionally, the first beam member includes a first mating portion. The second beam member includes a second mating portion. An extension portion is disposed on at least one of the first mating portion and the second mating portion, and the first mating portion and the second mating portion have an overlap region. A fastener passes through the overlap region to connect the first mating portion to the second mating portion.

[0010] Optionally, the rocker beam further includes a positioning structure, the positioning structure including a positioning protrusion and a positioning groove, one of the positioning protrusion and the positioning groove being disposed on the first beam body and the other of the positioning protrusion and the positioning groove being disposed on the second beam body.

[0011] Optionally, the exhaust pipe includes a first pipe section, a second pipe section, and a third pipe section. The second pipe section is housed in the first housing space and configured as a U-shaped pipe section. Two first avoidance holes are provided in the rocker beam. The two first avoidance holes are spaced apart along the length of the rocker beam. Both ends of the second pipe section extend from the first avoidance holes and are connected to the first pipe section and the third pipe section, respectively.

[0012] Optionally, the first beam member and the second beam member are disposed opposite each other and detachably connected. The second beam member is located inside the first beam member in the short-side direction. A first avoidance hole is provided on the second beam member on the opposite side of the short-side direction from the first beam member. The two first avoidance holes are disposed adjacent to both ends of the second beam member, respectively.

[0013] Optionally, the exhaust pipe includes a cooling jacket. The cooling jacket sleeves the second pipe section and includes a liquid inlet and a liquid outlet. Both ends of the cooling jacket are airtightly connected to the second pipe section. A cooling cavity is formed between the cooling jacket and the second pipe section. The liquid inlet and the liquid outlet are spaced apart along the length of the cooling jacket and each communicate with the cooling cavity.

[0014] Optionally, the underbody structure includes a cooling water pipe. The cooling water pipe is arranged parallel to the rocker beam and includes a liquid inlet pipe and a liquid outlet pipe. A water inlet connector and a water outlet connector are attached to the liquid inlet and liquid outlet, respectively. The water inlet connector and the water outlet connector are connected to the liquid inlet pipe and the liquid outlet pipe, respectively.

[0015] Optionally, the exhaust pipe includes an intermediate jacket. The intermediate jacket is disposed between the second pipe section and the cooling jacket, and both ends of the intermediate jacket are airtightly connected to the second pipe section. Both ends of the cooling jacket are airtightly connected to the intermediate jacket. An intermediate cavity is formed between the intermediate jacket and the second pipe section. The cooling cavity is formed between the cooling jacket and the intermediate jacket. A mounting hole is provided in the intermediate jacket. A plunger valve is attached to the mounting hole. A through hole is provided in the second pipe section. The plunger valve opens and closes the through hole to communicate the second pipe section with the intermediate cavity or to separate the second pipe section from the intermediate cavity.

[0016] Optionally, the underbody structure includes a plunger valve controller. The plunger valve includes a valve body and a valve core. The valve body is fixed to the intermediate jacket. The valve core is movably disposed within the valve body and extends into the mounting hole. The plunger valve controller is connected to the valve core and fixed on the rocker beam.

[0017] Optionally, the second tube section includes a straight tube section and a bent section connected to both ends of the straight tube section, and the lengths of the straight tube section, the intermediate jacket, and the cooling jacket decrease sequentially.

[0018] Optionally, the exhaust pipe includes a first insulating sleeve and a second insulating sleeve, the first insulating sleeve sleeves the straight pipe section, and the second insulating sleeve sleeves the bent section.

[0019] Optionally, a fixing flange is disposed at each end of the two bent portions, and the fixing flange is sleeved with a second insulating sleeve and fixedly connected to the rocker beam.

[0020] Optionally, the underbody structure includes a subframe longitudinal beam. The exhaust pipe includes a fourth pipe section. A second accommodating space is formed in the subframe longitudinal beam. The fourth pipe section is accommodated in the second accommodating space and connected to the third pipe section.

[0021] Optionally, the fourth pipe section is sleeved with a third insulating sleeve.

[0022] Optionally, the sub-frame longitudinal beam includes an upper plate and a lower plate, the upper plate and the lower plate fastened to each other and connected to form the second accommodating space.

[0023] Optionally, the fourth tube section is restricted within the second accommodation space via a restricting plate, the upper plate being provided with a restricting hole through which the restricting plate passes, the restricting plate being wrapped around the fourth tube section and fixedly connected to the lower plate.

[0024] Based on the above technical solution, the present disclosure further provides a vehicle, which includes the above underbody structure.

[0025] According to the above technical solution, in the underbody structure provided in the present disclosure, a first storage space is formed within the rocker beam, and at least a portion of the exhaust pipe is stored within the first storage space. In this way, the internal space of the rocker beam can be used to arrange the exhaust pipe, and the exhaust pipe does not need to occupy additional space, thus avoiding the battery and being able to be sufficiently close to the connected exhaust system. The space under the body floor can be fully occupied by the battery pack, maximizing the space available for the battery pack and thereby facilitating the overall layout of the body floor.

[0026] Other features and advantages of the present disclosure are described in detail in the following specific embodiments.

[0027] The drawings are intended to provide a further understanding of the present disclosure and are intended to constitute a part of this specification. The following drawings and specific embodiments are used together to explain the present disclosure and not to constitute limitations thereon. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a schematic structural diagram of a vehicle provided by an exemplary embodiment of the present disclosure; [Figure 2] FIG. 10 is another schematic structural view of a vehicle provided in accordance with an exemplary embodiment of the present disclosure, showing a second pipe section of the exhaust pipe housed within a rocker beam. [Figure 3] FIG. 1 is a schematic structural diagram of a rocker beam in a vehicle provided by an exemplary embodiment of the present disclosure. [Figure 4] FIG. 10 is another schematic structural diagram of a rocker beam in a vehicle provided by an exemplary embodiment of the present disclosure. [Figure 5] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 2 is a schematic structural diagram of a second pipe section of an exhaust pipe in a vehicle provided by an exemplary embodiment of the present disclosure. [Figure 7] 2 is a cross-sectional schematic view of a second pipe portion of a vehicle exhaust pipe provided by an exemplary embodiment of the present disclosure. FIG. [Figure 8] FIG. 2 is another schematic structural diagram of a vehicle provided by an exemplary embodiment of the present disclosure. [Figure 9] FIG. 10 is a schematic structural diagram of a subframe longitudinal beam and a fourth pipe section of an exhaust pipe in a vehicle provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0029] Specific embodiments of the present disclosure are described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely for purposes of illustrating and interpreting the present disclosure, and are not intended to limit the present disclosure.

[0030] In this disclosure, unless otherwise specified, orientation terms such as "upper and lower" generally refer to the relative "upper and lower" of corresponding components in the direction of gravity in use, and "inner and outer" refer to the "inner and outer" of the contours of corresponding components. Furthermore, "front and rear" are defined relative to the vehicle, with the direction toward the head of the vehicle being "front" and the direction toward the tail of the vehicle being "rear." Furthermore, terms such as "first," "second," "third," and "fourth" used in this disclosure are intended to distinguish one element from another and have no significance or order. In the following description, where drawings are included, the same reference numerals in different drawings represent the same or similar elements unless otherwise specified. The above definitions are used only to describe and illustrate the present disclosure and should not be construed as limiting the present disclosure.

[0031] According to an exemplary embodiment of the present disclosure, with reference to Figures 1 to 9, an underbody structure 100 is provided. The underbody structure 100 includes a rocker beam 1 and an exhaust pipe 2. A first storage space 13 is formed in the rocker beam 1. At least a portion of the exhaust pipe 2 is stored in the first storage space 13.

[0032] According to the above technical solution, in the underbody structure 100 provided in the present disclosure, a first storage space 13 is formed in the rocker beam 1, and at least a portion of the exhaust pipe 2 is stored in the first storage space 13. In this way, the internal space of the rocker beam 1 can be used to arrange the exhaust pipe 2, and the exhaust pipe 2 does not need to occupy additional space, thus not only avoiding the battery but also being able to be sufficiently close to the connected exhaust system. The space under the body floor can be fully occupied by the battery pack, maximizing the space available for the battery pack, thereby facilitating the overall layout of the body floor.

[0033] In the exemplary embodiment provided in the present disclosure, the rocker beam 1 may include a first beam body 11 and a second beam body 12, which are arranged opposite to each other to form the above-mentioned first accommodating space 13. In this design manner, the rocker beam 1 is designed as a divided structure, i.e., the rocker beam 1 is formed by connecting the first beam body 11 and the second beam body 12 to each other, so that the exhaust pipe 2 can be conveniently installed in the rocker beam 1, thereby solving the assembly problem between the exhaust pipe 2 and the rocker beam 1.

[0034] The first beam body 11 and the second beam body 12 may be removably connected. In this way, when the exhaust pipe 2 needs to be replaced or disassembled, the exhaust pipe 2 may be removed from the rocker beam 1 by disassembling the first beam body 11 and the second beam body 12 to facilitate disassembly of the exhaust pipe 2.

[0035] In the exemplary embodiments provided in the present disclosure, the first beam body 11 and the second beam body 12 may be constructed in any suitable manner. Referring to Figures 4 and 5, the first beam body 11 may have a first arc-shaped groove 1121 formed therein. The second beam body 12 may have a second arc-shaped groove 1221 formed therein. The first arc-shaped groove 1121 and the second arc-shaped groove 1221 are abutted against each other to form the first receiving space 13.

[0036] To facilitate the connection between the first beam member 11 and the second beam member 12, the first beam member 11 may include a first combination portion 112, and the second beam member 12 may include a second combination portion 122, with an extension portion 1211 (hereinafter referred to as the extension portion 1211) being arranged on at least one of the first combination portion 112 and the second combination portion 122, so that the first combination portion 112 and the second combination portion 122 have an overlapping region 18. A fastener passes through the overlapping region 18 to connect the first combination portion 112 and the second combination portion 122, thereby realizing the connection between the first beam member 11 and the second beam member 12.

[0037] 2 to 6 , in an exemplary embodiment provided in the present disclosure, the exhaust pipe 2 may include a first pipe portion 201, a second pipe portion 202, and a third pipe portion 203. The second pipe portion 202 may be housed in the first housing space 13 and configured as a U-shaped pipe portion. Two first avoidance holes 14 may be provided in the rocker beam. The two first avoidance holes 14 are spaced apart along the length of the rocker beam. Both ends of the second pipe portion 202 extend from the first avoidance holes 14 and are connected to the first pipe portion 201 and the third pipe portion 203, respectively. The front end of the first pipe portion 201 is configured to be connected to a vehicle engine. The rear end of the third pipe portion 203 is configured to be connected to a rear part of the exhaust pipe 2. Exhaust gas generated by the engine is transported to the exhaust muffler through the first pipe section 201, the second pipe section 202, the third pipe section 203 and the rear part of the exhaust pipe 2. After being treated in the exhaust muffler, the exhaust gas is discharged into the atmospheric environment.

[0038] Furthermore, the two first avoidance holes 14 may be arranged at any appropriate position on the rocker beam. In one embodiment, the two first avoidance holes 14 may be arranged at both ends of the rocker beam, i.e., both ends of the first accommodation space 13 are connected. In this case, both ends of the second pipe portion 202 pass through both ends of the rocker beam. In this manner, the battery pack can be avoided and the connected exhaust system can be sufficiently approached, thereby facilitating the overall arrangement of the exhaust pipe 2. In another embodiment, referring to FIGS. 3 and 4, the two first avoidance holes 14 may be arranged on the side of the rocker beam. In this case, both ends of the second pipe portion 202 pass through the side of the rocker beam. This arrangement method allows the overall arrangement of the exhaust pipe 2 to be more compact. In one embodiment, the two first avoidance holes 14 are arranged on the inner surface of the rocker beam. In this manner, the arrangement method of the second pipe portion 202 integrated into the rocker beam 1 has little impact on the side circumference of the vehicle body and can be implemented in a conventional vehicle body structure. Furthermore, the "inside" of the orientation term "inside surface" is defined by the relative position of the rocker beam 1 and the battery pack. The direction closer to the battery pack is the "inside" and the other direction is the "outside." The side of the rocker beam 1 closest to the battery pack is the "inside surface."

[0039] In the exemplary embodiments provided in the present disclosure, the first beam member 11 and the second beam member 12 may be arranged in any suitable manner to form the rocker beam 1.

[0040] In one embodiment, referring to FIGS. 3 to 5, the first beam member 11 and the second beam member 12 may be arranged opposite each other in the short-side direction or may be detachably connected. The second beam member 12 is located inside the first beam member 11 in the short-side direction. That is, the first beam member 11 is arranged away from the battery pack, and the second beam member 12 is arranged close to the battery pack. A first avoidance hole 14 is provided on the second beam member 12 on the opposite side of the short-side direction from the first beam member 11. That is, the two first avoidance holes 14 are arranged on the battery pack side of the second beam member 12. In this way, the arrangement direction of the second pipe portion 202 integrated into the rocker beam 1 has little impact on the side circumference of the vehicle body, and can be implemented in a conventional vehicle body structure. The two first avoidance holes 14 are arranged close to both ends of the second beam member 12. In this way, the battery pack can be avoided and still be close enough to the connected exhaust system, resulting in a very compact overall arrangement of the exhaust pipe 2.

[0041] The first beam body 11 and the second beam body 12 may be constructed in any appropriate manner. Optionally, referring to FIGS. 4 and 5 , the first beam body 11 may include a first main body 111 and a first combined portion 112. The first combined portion 112 includes a first arc-shaped groove 1121 and two first mounting walls 1122. The two first mounting walls 1122 extend along the vertical direction and are located at both ends of the first arc-shaped groove 1121. The first main body 111 is connected to the two first mounting walls 1122. The second beam body 12 may include a second main body 121 and a second combined portion 122. The second combined portion 122 includes a second arc-shaped groove 1221 and two second mounting walls 1222. The two second mounting walls 1222 extend in the up-down direction and are located at both ends of the second arc-shaped groove 1221. The second main body 121 is connected to the two second mounting walls 1222 and includes an extension portion 1211. The extension portion 1211 extends in the short direction. The first arc-shaped groove 1121 and the second arc-shaped groove 1221 are abutted against each other to form the first housing space 13. The first mounting wall 1122 and the second mounting wall 1222 are attached to each other. The first main body 111 is provided with a first connection hole 1111. The extension portion 1211 is provided with a second connection hole 1212 and is overlapped with the first main body 111. The fasteners pass through the first connection hole 1111 and the second connection hole 1212 to fixedly connect the first beam body 11 to the second beam body 12. In this way, a split design of the rocker beam 1 is realized, solving the assembly problem between the rocker beam 1 and the exhaust pipe 2. The exhaust pipe 2 can be conveniently integrated into the rocker beam 1 to save space under the vehicle body floor. As a result, the space under the vehicle body floor can be fully occupied by the battery pack, maximizing the space available for the battery pack, and thereby facilitating the overall layout of the vehicle body floor. To improve the reliability of the connection between the first beam body 11 and the second beam body 12, a plurality of first connection holes 1111 may be provided on the upper surface and the lower surface of the first body 111. The plurality of first connection holes 1111 are arranged at intervals along the length of the first body 111.The second beam member 12 has two extension portions 1211. The two extension portions 1211 are spaced apart in the vertical direction and are configured to be stacked on the first main body 111. Each of the two extension portions 1211 has a plurality of second connection holes 1212. The second connection holes 1212 are spaced apart along the length of the second main body 121. A plurality of fasteners pass through the corresponding first connection holes 1111 and second connection holes 1212 to fixedly connect the first beam member 11 to the second beam member 12. Furthermore, the fasteners may be any appropriate fastening members, such as rivets, and are not particularly limited in the present disclosure.

[0042] Furthermore, the rocker beam 1 may further include a positioning structure 150 to facilitate positioning and attachment of the first beam body 11 and the second beam body 12. The first beam body 11 and the second beam body 12 may be positioned via the positioning structure 150 to facilitate attachment of the first beam body 11 and the second beam body 12.

[0043] The positioning structure 150 may be constructed in any suitable manner. Optionally, referring to FIGS. 4 and 5 , the positioning structure 150 may include a positioning protrusion 151 and a positioning groove 152. The positioning protrusion 151 and the positioning groove 152 extend along the length of the rocker beam 1. One of the first mounting wall 1122 and the second mounting wall 1222 is provided with the positioning protrusion 151, and the other of the first mounting wall 1122 and the second mounting wall 1222 is provided with the positioning groove 152. Positioning between the first beam body 11 and the second beam body 12 is achieved by mutual cooperation between the positioning protrusion 151 and the positioning groove 152, which facilitates attachment of the first beam body 11 and the second beam body 12. In the embodiment shown in FIGS. 4 and 5 , the first mounting wall 1122 is provided with the positioning protrusion 151, and the second mounting wall 1222 is provided with the positioning groove 152. In other embodiments, the positioning groove 152 may be provided on the first mounting wall 1122, and the positioning protrusion 151 may be provided on the second mounting wall 1222. This is not particularly limited in the present disclosure. Furthermore, the positioning protrusion 151 may be integrally formed on the first beam body 11, and the positioning groove 152 may be integrally formed on the second beam body 12. The arrangement of the positioning protrusion 151 and the positioning groove 152 can increase the structural strength of the rocker beam 1 and improve the overall collision safety performance of the vehicle. In some other embodiments, the positioning structure 150 may include a positioning pin and a positioning hole. One of the first mounting wall 1122 and the second mounting wall 1222 is provided with the positioning pin, and the other is provided with the positioning hole. The positioning of the first beam body 11 and the second beam body 12 is achieved by cooperation of the positioning pin and the positioning hole.

[0044] In some other embodiments, the first beam body 11 and the second beam body 12 may be arranged opposite each other in the vertical direction, i.e., the first beam body 11 and the second beam body 12 are arranged one above the other. In this case, a semicircular hole is provided on the battery pack side of the first beam body 11 and the battery pack side of the second beam body 12, respectively. After the first beam body 11 and the second beam body 12 are assembled together, the two semicircular holes are butted together to form the first escape hole 14. The semicircular holes may be provided near the ends of the first beam body 11 and the second beam body 12. In this way, the positions where the second pipe section 202 passes through the rocker beam 1 are located at both ends of the rocker beam 1. In this way, the battery pack can be avoided and the exhaust system can be sufficiently close, resulting in a very compact overall arrangement of the exhaust pipe 2.

[0045] Because the exhaust gases generated by the engine still carry heat during the transport process, the heat carried by the exhaust gases is partially conducted to the rocker beam 1. To ensure that the temperature of the rocker beam 1 is controlled within a normal range, in a specific embodiment provided in the present disclosure, with reference to FIGS. 6 and 7 , the exhaust pipe 2 can include a cooling jacket 205. The cooling jacket 205 sleeves the second pipe section 202 and includes a liquid inlet 2051 and a liquid outlet 2052. Both ends of the cooling jacket 205 are airtightly connected to the second pipe section 202. A cooling cavity 2053 is formed between the cooling jacket 205 and the second pipe section 202. The liquid inlet 2051 and the liquid outlet 2052 are spaced apart along the length of the cooling jacket 205 and each communicate with the cooling cavity 2053. Two second escape holes 16 are provided in the rocker beam 1. The two second bypass holes 16 are spaced apart along the length of the rocker beam and correspond to the liquid inlet 2051 and the liquid outlet 2052, respectively. By bypassing the second bypass holes 16, a coolant transport pipe in a cooling system for the entire vehicle can pass through the second bypass holes 16 and connect to the liquid inlet 2051 so as to guide the coolant into the cooling cavity 2053. In the cooling system for the entire vehicle, the coolant after heat exchange can be discharged from the liquid outlet 2052 through the coolant transport pipe, thereby cooling the rocker beam 1 and dissipating heat from the exhaust pipe 2, thereby mitigating or preventing deterioration of plastic and rubber parts around the exhaust pipe 2 over time and preventing high temperatures from affecting the performance and lifespan of the battery modules inside the battery pack.

[0046] 1 and 2 , the underbody structure 100 may further include a cooling water pipe 3. The cooling water pipe 3 is arranged parallel to the rocker beam 1 and includes a liquid inlet pipe 31 and a liquid outlet pipe 32. A water inlet connector 207 and a water outlet connector 208 are attached to the liquid inlet 2051 and the liquid outlet 2052, respectively. The water inlet connector 207 and the water outlet connector 208 are connected to the liquid inlet pipe 31 and the liquid outlet pipe 32, respectively, through the second bypass hole 16. The liquid inlet pipe 31 is configured to transport the coolant into the cooling cavity 2053 of the cooling jacket 205. The coolant after heat exchange is discharged from the cooling cavity 2053 via the liquid outlet pipe 32. The liquid inlet pipe 31 and the liquid outlet pipe 32 are arranged parallel to the rocker beam 1 and are close to the rocker beam 1. In this manner, the arrangement is more compact. Furthermore, since the liquid inlet pipe 31 and the liquid outlet pipe 32 emerge from the side of the rocker beam 1, it becomes easier to arrange the cooling pipes compactly throughout the vehicle.

[0047] 6 and 7 , in an exemplary embodiment provided in the present disclosure, the exhaust pipe 2 may include an intermediate jacket 206. The intermediate jacket 206 is disposed between the second pipe section 202 and the cooling jacket 205, and both ends of the intermediate jacket 206 are airtightly connected to the second pipe section 202. Both ends of the cooling jacket 205 are airtightly connected to the intermediate jacket 206. An intermediate cavity 2061 is formed between the intermediate jacket 206 and the second pipe section 202. The cooling cavity is formed between the intermediate jacket 206 and the cooling jacket 205. The intermediate jacket 206 is provided with a mounting hole 2062. A plunger valve 4 is attached to the mounting hole 2062. The second pipe section 202 is provided with a through-hole 2021. The plunger valve 4 opens and closes the through-hole 2021 to connect the second pipe section 202 to the intermediate cavity 2061 or to separate the second pipe section 202 from the intermediate cavity 2061. When the plunger valve 4 opens the through-hole 2021, the second pipe section 202 connects to the intermediate cavity 2061. The high-temperature exhaust gas transported in the second pipe section 202 enters the intermediate cavity 2061 and may exchange heat with the coolant in the cooling cavity 2053. After the coolant in the cooling cavity 2053 absorbs the heat of the exhaust gas, the energy of the exhaust gas can be recovered by the heat pump system of the entire vehicle, thereby improving the warm-up speed and economy of the entire vehicle. When the plunger valve 4 closes the through-hole 2021, the intermediate cavity 2061 reduces the heat transfer of the high-temperature exhaust gas in the second pipe section 202 to the cooling cavity 2053, thereby achieving a heat insulating function. To facilitate installation of the plunger valve 4, a third bypass hole 17 is provided in the rocker beam 1, and the plunger valve 4 passes through the third bypass hole 17 and is exposed to the first accommodating space 13, facilitating connection between the valve core 42 and the plunger valve controller 5 (described later).

[0048] 2 and 7 , in an exemplary embodiment provided in the present disclosure, the underbody structure 100 can include a plunger valve controller 5. The plunger valve 4 includes a valve body 41 and a valve core 42. The valve body 41 is fixed to the intermediate jacket 206. The valve core 42 is movably disposed within the valve body 41 and extends into the mounting hole 2062. The plunger valve controller 5 is connected to the valve core 42 and is fixed onto the rocker beam 1. The plunger valve controller 5 can control the movement of the valve core 42 to open and close the through-hole 2021.

[0049] 6 and 7, the second pipe section 202 includes a straight pipe section 2022 and bent sections 2023 connected to both ends of the straight pipe section 2022. To facilitate the connection between the intermediate jacket 206 and the straight pipe section 2022 and the connection between the cooling jacket 205 and the intermediate jacket 206, the lengths of the straight pipe section 2022, the intermediate jacket 206, and the cooling jacket 205 sequentially decrease. In this manner, the cooling jacket 205 is overlapped on the intermediate jacket 206, the intermediate jacket 206 is overlapped on the straight pipe section 2022, the cooling jacket 205 is welded to the intermediate jacket 206, and the intermediate jacket 206 is welded to the straight pipe section 2022. Furthermore, to sleeve the intermediate jacket 206 and the cooling jacket 205 of the second pipe section 202, the second pipe section 202 may be bent into a U-shape after the intermediate jacket 206 and the cooling jacket 205 are sequentially attached and fixed to the second pipe section 202. In this case, the straight pipe portion 2022 and the bent portion 2023 are integrally formed. Alternatively, the intermediate jacket 206 and the cooling jacket 205 may be sequentially attached and fixed to the straight pipe portion 2022, and then the two bent portions 2023 may be welded to both ends of the straight pipe portion 2022 to form the U-shaped second pipe portion 202. This is not particularly limited in the present disclosure.

[0050] In an exemplary embodiment provided in the present disclosure, referring to FIG. 6 , the exhaust pipe 2 may include a first insulating sleeve 209 and two second insulating sleeves 2010. The first insulating sleeve 209 has an opening (not shown) extending along the length of the first insulating sleeve 209. The first insulating sleeve 209 sleeves a straight pipe section 2022. The opening design is convenient for sleeve-fitting the first insulating sleeve 209 on the straight pipe section 2022 to reduce the difficulty of assembling the first insulating sleeve 209 and the straight pipe section 2022. The two second insulating sleeves 2010 each sleeve a bent section 2023. The two second insulating sleeves 2010 are configured in an L-shape to match the shape of the bent section 2023. The second tube portion 202 is separated from the rocker beam 1 by the arrangement of the first insulating sleeve 209 and the second insulating sleeve 2010, which can reduce heat conduction from the second tube portion 202 to the rocker beam 1 and vibration transmission to the entire vehicle.

[0051] In the exemplary embodiment provided in the present disclosure, to restrict the second pipe portion 202 within the first accommodating space 13, referring to FIG. 2 , fixed flanges 6 are respectively disposed at the ends of the two bent portions 2023, and the fixed flanges 6 sleeve the second insulating sleeve 2010 and are fixedly connected to the rocker beam 1 to restrict the second pipe portion 202 within the first accommodating space 13. The fixed flanges 6 may have a split structure, i.e., the fixed flange 6 is divided into two flange portions. The two flange portions are each constructed in a semicircular structure and clamp the second insulating sleeve 2010 along the radial direction of the second pipe portion 202. The two flange portions are each fixed to the rocker beam 1 via bolts, screws, etc. to facilitate assembly.

[0052] 1 and 8 , in an exemplary embodiment provided in the present disclosure, a vehicle includes a subframe longitudinal beam 7. The exhaust pipe 2 includes a fourth pipe portion 204. A second receiving space 71 is formed in the subframe longitudinal beam 7. The fourth pipe portion 204 is received in the second receiving space 71 and connected to the third pipe portion 203. In this manner, the second receiving space 71 formed by the subframe longitudinal beam 7 can be used to arrange the fourth pipe portion 204 of the exhaust pipe 2 so as to realize an embedded integration between the fourth pipe portion 204 and the subframe longitudinal beam 7. With this design, the fourth pipe portion 204 does not need to occupy a separate space, and the underfloor space at the rear of the vehicle body can be fully occupied by the suspension, power system, etc., thereby making full use of the underfloor space at the rear of the vehicle body and increasing the ground clearance of the entire vehicle.

[0053] According to the above solution, in the present disclosure, the second pipe section 202 and the fourth pipe section 204 of the exhaust pipe 2 are integrated into the rocker beam 1 and the subframe longitudinal beam 7, respectively, and are almost invisible. In this way, hybrid and pure electric co-platform solutions can be developed for the entire vehicle floor and rear floor. The second pipe section 202 of the exhaust pipe 2 is the middle section of the exhaust pipe 2, and the fourth pipe section 204 of the exhaust pipe 2 is the rear end of the exhaust pipe 2.

[0054] In the exemplary embodiment provided in the present disclosure, referring to Figure 9, the subframe longitudinal beam 7 can include an upper plate 72 and a lower plate 73. The upper plate 72 and the lower plate 73 can be

number

[0055] In the exemplary embodiment provided in the present disclosure, the fourth pipe portion 204 may be sleeved with a third insulating sleeve 2011. The placement of the third insulating sleeve 2011 can separate the fourth pipe portion 204 from the subframe longitudinal beam 7, reducing heat conduction from the fourth pipe portion 204 to the subframe longitudinal beam 7 and vibration transmission to the entire vehicle.

[0056] In the exemplary embodiment provided in the present disclosure, the fourth tube portion 204 may be restricted within the second accommodating space 71 via a restricting plate 8. The upper plate 72 is provided with a restricting hole 721 through which the restricting plate 8 passes to prevent interference between the restricting plate 8 and the upper plate 72. The restricting plate 8 is wrapped around the fourth tube portion 204 and fixedly connected to the lower plate 73, thereby restricting the fourth tube portion 204 within the second accommodating space 71.

[0057] In the present disclosure, one end of the first pipe section 201 is connected to the engine, the second pipe section 202 is connected between the first pipe section 201 and the third pipe section 203, the third pipe section 203 is connected to the fourth pipe section 204, and the rear end of the fourth pipe section 204 is connected to an exhaust muffler to discharge exhaust gas generated during engine operation and treated by the exhaust muffler into the atmosphere. The first pipe section 201 and the second pipe section 202, the second pipe section 202 and the third pipe section 203, and the third pipe section 203 and the fourth pipe section 204 may be connected via a pipe structure. This is not particularly limited in the present disclosure. Furthermore, in the present disclosure, the first pipe section 201, the second pipe section 202, the third pipe section 203, and the fourth pipe section 204 may be entire pipe sections or entire pipe sections formed by connecting multiple sub-pipe sections. This is not particularly limited in the present disclosure.

[0058] In the vehicle provided in the present disclosure, a portion of the exhaust pipe 2 (i.e., the second pipe portion 202) is integrated into the rocker beam 1, allowing the battery pack to fully occupy the underfloor space of the vehicle body, maximizing the space available for the battery pack. Furthermore, another portion of the exhaust pipe 2 (i.e., the fourth pipe portion 204) is integrated into the subframe longitudinal beam 7, allowing the suspension, power system, and other components to fully occupy the underfloor space at the rear of the vehicle body, thereby fully utilizing the underfloor space at the rear of the vehicle body and increasing the ground clearance of the entire vehicle. Furthermore, the second pipe portion 202 of the exhaust pipe 2 is designed with a three-layer structure. The inside of the second pipe portion 202 is used for circulating exhaust gases generated by the engine, the intermediate jacket 206 is used for insulation or heat recovery, and the cooling jacket 205 is used for circulating coolant. This design is advantageous for exhaust gas heat recovery and is advantageous for improving the warm-up speed and economy of the entire vehicle. Furthermore, the split design of the rocker beam 1 and the detachable connection between the first beam body 11 and the second beam body 12 can facilitate the integration of the exhaust pipe 2 within the rocker beam 1, solve the assembly problem between the exhaust pipe 2 and the rocker beam 1, and also facilitate the disassembly of the exhaust pipe 2.

[0059] Based on the above technical solution, the present disclosure further provides a vehicle, which includes the above underbody structure 100 and thus also has the above features, and to avoid repetition, details will not be described here.

[0060] The preferred embodiments of the present disclosure have been described in detail above with reference to the drawings.However, the present disclosure is not limited to the specific details in the above embodiments.Several simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and these simple modifications fall within the protection scope of the present disclosure.

[0061] Furthermore, it should be noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure does not describe each of the various possible combination manners.

[0062] Furthermore, different embodiments of the present disclosure may also be arbitrarily combined without departing from the concept of the present disclosure, and these combinations should also be considered as disclosed content in the present disclosure.

Claims

1. A rocker beam (1) having a first storage space (13) formed therein; an exhaust pipe (2), at least a portion of which is accommodated in the first accommodation space (13); An underbody structure (100) comprising:

2. 2. The underbody structure (100) according to claim 1, wherein the rocker beam (1) comprises a first beam body (11) and a second beam body (12), the first beam body (11) and the second beam body (12) being arranged opposite each other to form the first storage space (13).

3. 3. The underbody structure (100) according to claim 2, wherein the first beam member (11) is removably connected to the second beam member (12).

4. 3. The underbody structure (100) of claim 1 or 2, wherein a first arc-shaped groove (1121) is formed in the first beam body (11), a second arc-shaped groove (1221) is formed in the second beam body (12), and the first arc-shaped groove (1121) and the second arc-shaped groove (1221) are butted together to form the first storage space (13).

5. The first beam body (11) comprises a first combined portion (112), the second beam body (12) comprises a second combined portion (122), and an extension portion (1211) is arranged on at least one of the first combined portion (112) and the second combined portion (122), so that the first combined portion (112) and the second combined portion (122) have an overlapping region (18); a fastener passes through the overlap region (18) and connects the first mating portion (112) and the second mating portion (122); An underbody structure (100) according to any one of claims 1 to 4.

6. 6. The underbody structure (100) according to any one of claims 1 to 5, wherein the rocker beam (1) further comprises a positioning structure (150), the positioning structure (150) comprising a positioning protrusion (151) and a positioning groove (152), one of the positioning protrusion (151) and the positioning groove (152) being disposed on the first beam body (11) and the other being disposed on the second beam body (12).

7. 7. The underbody structure (100) according to claim 2, wherein the exhaust pipe (2) comprises a first pipe portion (201), a second pipe portion (202), and a third pipe portion (203), the second pipe portion (202) being accommodated in the first accommodation space (13) and configured as a U-shaped pipe portion, the rocker beam (1) being provided with two first avoidance holes (14), the two first avoidance holes (14) being arranged at a distance along the length direction of the rocker beam (1), both ends of the second pipe portion (202) extending from the first avoidance holes (14), and both ends of the second pipe portion (202) being connected to the first pipe portion (201) and the third pipe portion (203), respectively.

8. 8. The underbody structure (100) of claim 7, wherein the first beam body (11) and the second beam body (12) are arranged opposite each other and detachably connected, the second beam body (12) is located inside the first beam body (11) in the short direction, the second beam body (12) has the first avoidance hole (14) on the opposite side of the first beam body (11) in the short direction, and the two first avoidance holes (14) are arranged close to both ends of the second beam body (12).

9. 9. The underbody structure (100) according to claim 7 or 8, wherein the exhaust pipe (2) comprises a cooling jacket (205), the cooling jacket (205) sleeves the second pipe section (202) and comprises a liquid inlet (2051) and a liquid outlet (2052), both ends of the cooling jacket (205) are airtightly connected to the second pipe section (202), a cooling cavity (2053) is formed between the cooling jacket (205) and the second pipe section (202), the liquid inlet (2051) and the liquid outlet (2052) are arranged at a distance along the length of the cooling jacket (205), and the liquid inlet (2051) and the liquid outlet (2052) are each in communication with the cooling cavity (2053).

10. 10. The underbody structure (100) of claim 9, wherein the underbody structure (100) comprises a cooling water pipe (3), the cooling water pipe (3) being arranged parallel to the rocker beam (1), the cooling water pipe (3) comprising a liquid inlet pipe (31) and a liquid outlet pipe (32), a water inlet connector (207) and a water outlet connector (208) attached to the liquid inlet (2051) and the liquid outlet (2052), respectively, and the water inlet connector (207) and the water outlet connector (208) being connected to the liquid inlet pipe (31) and the liquid outlet pipe (32), respectively.

11. the exhaust pipe (2) comprises an intermediate jacket (206), the intermediate jacket (206) is disposed between the second pipe section (202) and the cooling jacket (205), both ends of the intermediate jacket (206) are airtightly connected to the second pipe section (202), both ends of the cooling jacket (205) are airtightly connected to the intermediate jacket (206), an intermediate cavity (2061) is formed between the intermediate jacket (206) and the second pipe section (202), and the cooling cavity (2053) is formed between the cooling jacket (205) and the intermediate jacket (206); The intermediate jacket (206) has a mounting hole (2062), a plunger valve (4) is mounted in the mounting hole (2062), the second pipe portion (202) has a through hole (2021), and the plunger valve (4) opens and closes the through hole (2021) to connect the second pipe portion (202) to the intermediate cavity (2061) or to separate the second pipe portion (202) from the intermediate cavity (2061). An underbody structure (100) according to claim 9 or 10.

12. 12. The underbody structure (100) according to claim 11, wherein the underbody structure (100) comprises a plunger valve controller (5), the plunger valve (4) comprises a valve body (41) and a valve core (42), the valve body (41) is fixed to the intermediate jacket (206), the valve core (42) is movably disposed within the valve body (41) and extends into the mounting hole (2062), and the plunger valve controller (5) is connected to the valve core (42) and fixed to the rocker beam (1).

13. 13. The underbody structure (100) according to claim 11 or 12, wherein the second pipe portion (202) comprises a straight pipe portion (2022) and bent portions (2023) connected to both ends of the straight pipe portion (2022), and the lengths of the straight pipe portion (2022), the intermediate jacket (206), and the cooling jacket (205) decrease sequentially.

14. 14. The underbody structure (100) according to claim 13, wherein the exhaust pipe (2) comprises a first insulating sleeve (209) and a second insulating sleeve (2010), the first insulating sleeve (209) sleeves the straight pipe portion (2022), and the second insulating sleeve (2010) sleeves the bent portion (2023).

15. 15. The underbody structure (100) of claim 14, wherein a fixing flange (6) is disposed at each end of the two bent portions (2023), and the fixing flange (6) sleeves the second insulating sleeve (2010) and is fixedly connected to the rocker beam (1).

16. 16. The underbody structure (100) according to any one of claims 7 to 15, wherein the underbody structure (100) comprises a subframe longitudinal beam (7), the exhaust pipe (2) comprises a fourth pipe portion (204), a second storage space (71) is formed in the subframe longitudinal beam (7), and the fourth pipe portion (204) is accommodated in the second storage space (71) and connected to the third pipe portion (203).

17. 17. The underbody structure (100) of claim 16, wherein the fourth pipe section (204) is sleeved with a third insulating sleeve (2011).

18. 18. The underbody structure (100) according to claim 16 or 17, wherein the subframe longitudinal beam (7) comprises an upper plate (72) and a lower plate (73), the upper plate (72) and the lower plate (73) being fastened to each other and connected to form the second storage space (71).

19. 19. The underbody structure (100) according to claim 18, wherein the fourth pipe section (204) is restricted in the second accommodating space (71) via a restricting plate (8), the restricting plate (8) being wrapped around the fourth pipe section (204) and fixedly connected to the lower plate (73).

20. A vehicle comprising an underbody structure (100) according to any one of claims 1 to 19.

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