WO2024103791A1 - 下车体结构及车辆 - Google Patents

下车体结构及车辆 Download PDF

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Publication number
WO2024103791A1
WO2024103791A1 PCT/CN2023/105059 CN2023105059W WO2024103791A1 WO 2024103791 A1 WO2024103791 A1 WO 2024103791A1 CN 2023105059 W CN2023105059 W CN 2023105059W WO 2024103791 A1 WO2024103791 A1 WO 2024103791A1
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WO
WIPO (PCT)
Prior art keywords
pipe section
pipe
vehicle body
body structure
lower vehicle
Prior art date
Application number
PCT/CN2023/105059
Other languages
English (en)
French (fr)
Inventor
张丰
廖银生
赵高明
孙宪猛
邵兴杨
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2024103791A1 publication Critical patent/WO2024103791A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/17—Understructures, i.e. chassis frame on which a vehicle body may be mounted forming fluid or electrical conduit means or having other means to accommodate the transmission of a force or signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/02—Side panels

Definitions

  • the present disclosure relates to the technical field of vehicles, and in particular to a lower vehicle body structure and a vehicle.
  • an exhaust pipe mounting part and a battery mounting part are provided on the vehicle body floor, a storage space for accommodating a battery cell module is provided in the battery mounting part, and the exhaust pipe mounting part is provided on the side of the battery mounting part and is provided with an avoidance groove, which surrounds part of the exhaust pipe, thereby realizing that the battery pack and the exhaust pipe are arranged side by side in the horizontal direction.
  • the space under the vehicle body floor is occupied by both the exhaust pipe and the battery pack, and the battery pack cannot maximize the use of the space under the vehicle body floor.
  • the purpose of the present disclosure is to provide a lower body structure and a vehicle that can maximize the available space for a battery pack.
  • the present disclosure provides a lower vehicle body structure, the lower vehicle body structure comprising:
  • a threshold beam wherein a first accommodation space is formed in the threshold beam
  • An exhaust pipe at least a portion of which is accommodated in the first accommodation space.
  • the threshold beam includes a first beam body and a second beam body, the first beam body and the second beam body are connected, and the first beam body and the second beam body are arranged opposite to each other to form the first accommodating space.
  • the first beam body is detachably connected to the second beam body.
  • a first arc-shaped groove is formed on the first beam body, and a second arc-shaped groove is formed on the second beam body, and the first arc-shaped groove corresponds to the second arc-shaped groove to form the first accommodating space.
  • the first beam body includes a first combining portion
  • the second beam body includes a second combining portion
  • at least one of the first combining portion and the second combining portion is provided with an extending portion so that the first combining portion and the second combining portion have an overlapping area
  • a fastener is provided through the overlapping area to connect the first combining portion part and the second binding part.
  • the threshold beam further includes a positioning structure, the positioning structure includes a positioning protrusion and a positioning groove, one of the positioning protrusion and the positioning groove is arranged on the first beam body, and the other is arranged on the second beam body.
  • the exhaust pipe includes a first pipe segment, a second pipe segment and a third pipe segment
  • the second pipe segment is accommodated in the first accommodating space and is constructed as a U-shaped pipe segment
  • two first avoidance holes are provided on the threshold beam
  • the two first avoidance holes are arranged at intervals along the length direction of the threshold beam
  • both ends of the second pipe segment extend out from the first avoidance holes and are respectively connected to the first pipe segment and the third pipe segment.
  • the first beam body and the second beam body are arranged relative to each other and detachably connected, the second beam body is located on the inner side of the first beam body in the transverse direction, and the first avoidance hole is provided on the side of the second beam body facing away from the first beam body in the transverse direction, and the two first avoidance holes are respectively arranged near the two ends of the second beam body.
  • the exhaust pipe includes a cooling jacket, which is sleeved on the second pipe section and is provided with a liquid inlet and a liquid outlet, and both ends of the cooling jacket are closedly connected to the second pipe section, a cooling chamber is formed between the cooling jacket and the second pipe section, and the liquid inlet and the liquid outlet are arranged at intervals along the length direction of the cooling jacket and are respectively connected to the cooling chamber.
  • the lower body structure includes a cooling water pipe, which is arranged parallel to the door sill beam and includes a liquid inlet pipe and a liquid outlet pipe, the liquid inlet and the liquid outlet are respectively equipped with a water inlet joint and a water outlet joint, and the water inlet joint and the water outlet joint are respectively connected to the liquid inlet pipe and the liquid outlet pipe.
  • a cooling water pipe which is arranged parallel to the door sill beam and includes a liquid inlet pipe and a liquid outlet pipe, the liquid inlet and the liquid outlet are respectively equipped with a water inlet joint and a water outlet joint, and the water inlet joint and the water outlet joint are respectively connected to the liquid inlet pipe and the liquid outlet pipe.
  • the exhaust pipe includes an intermediate sleeve, which is arranged between the second pipe segment and the cooling sleeve, and both ends of the intermediate sleeve are closedly connected to the second pipe segment, both ends of the cooling sleeve are closedly connected to the intermediate sleeve, an intermediate chamber is formed between the intermediate sleeve and the second pipe segment, and the cooling chamber is formed between the cooling sleeve and the intermediate sleeve; a mounting hole is provided on the intermediate sleeve, a plunger valve is installed in the mounting hole, and the second pipe segment is provided with a through hole, and the plunger valve opens or closes the through hole to connect the second pipe segment with the intermediate chamber or block the second pipe segment from the intermediate chamber.
  • an intermediate sleeve which is arranged between the second pipe segment and the cooling sleeve, and both ends of the intermediate sleeve are closedly connected to the second pipe segment, both ends of the cooling sleeve are closedly connected to the intermediate
  • the lower body structure includes a plunger valve controller
  • the plunger valve includes a valve body and a valve core
  • the valve body is fixed on the intermediate sleeve
  • the valve core is movably arranged in the valve body and extends into the mounting hole
  • the plunger valve controller is connected to the valve core and fixed on the threshold beam.
  • the second pipe section includes a straight pipe section and a bent section connected to both ends of the straight pipe section.
  • the length of the segment, the length of the intermediate jacket and the length of the cooling jacket decrease in sequence.
  • the exhaust pipe includes a first thermal insulation sleeve and a second thermal insulation sleeve, the first thermal insulation sleeve is arranged on the straight pipe section, and the second thermal insulation sleeve is arranged on the bent section.
  • the ends of the two bent sections are respectively provided with fixing flanges, and the fixing flanges are sleeved on the second heat insulation sleeve and fixedly connected to the door sill beam.
  • the lower body structure includes a subframe longitudinal beam
  • the exhaust pipe includes a fourth pipe segment
  • the subframe longitudinal beam forms a second accommodating space
  • the fourth pipe segment is accommodated in the second accommodating space and connected to the third pipe segment.
  • the fourth pipe section is sleeved with a third thermal insulation sleeve.
  • the sub-frame longitudinal beam includes an upper plate and a lower plate, and the upper plate and the lower plate are interlocked and connected to each other to form the second accommodating space.
  • the fourth pipe segment is limited in the second accommodating space by a limiting plate
  • the upper plate is provided with a limiting hole for the limiting plate to pass through
  • the limiting plate hoop is provided on the fourth pipe segment and fixedly connected to the lower plate.
  • the present disclosure further provides a vehicle, which includes the above lower vehicle body structure.
  • a first accommodating space is formed in the door sill beam, and at least a part of the exhaust pipe is accommodated in the first accommodating space.
  • the internal space of the door sill beam can be used to arrange the exhaust pipe, and the exhaust pipe does not need to occupy additional space. It can avoid the battery and be sufficiently close to the connected exhaust system.
  • the space under the floor of the vehicle body can be fully occupied by the battery pack, which can maximize the available space of the battery pack and is beneficial to the overall layout of the vehicle body floor.
  • FIG1 is a schematic structural diagram of a vehicle provided according to an exemplary embodiment of the present disclosure.
  • FIG2 is another schematic structural diagram of a vehicle according to an exemplary embodiment of the present disclosure, wherein the second pipe section of the exhaust pipe is accommodated in the rocker beam;
  • FIG. 3 is a schematic structural diagram of a sill beam in a vehicle according to an exemplary embodiment of the present disclosure
  • FIG4 is another schematic diagram of the structure of a sill beam in a vehicle according to an exemplary embodiment of the present disclosure
  • FIG5 is a cross-sectional view taken along line AA in FIG3 ;
  • FIG. 6 is a schematic structural diagram of a second pipe section of an exhaust pipe in a vehicle according to an exemplary embodiment of the present disclosure
  • FIG. 7 is a schematic cross-sectional view of a second pipe section of an exhaust pipe in a vehicle according to an exemplary embodiment of the present disclosure
  • FIG8 is another schematic structural diagram of a vehicle provided according to an exemplary embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a subframe longitudinal beam and a fourth pipe section of an exhaust pipe in a vehicle according to an exemplary embodiment of the present disclosure.
  • a lower body structure 100 which includes a rocker beam 1 and an exhaust pipe 2 .
  • a first accommodating space 13 is formed in the rocker beam 1 , and at least a portion of the exhaust pipe 2 is accommodated in the first accommodating space 13 .
  • a first accommodating space 13 is formed in the door sill beam 1, and at least a part of the exhaust pipe 2 is accommodated in the first accommodating space 13.
  • the internal space of the door sill beam 1 can be used to arrange the exhaust pipe 2, and the exhaust pipe 2 does not need to occupy additional space, and can avoid the battery and be sufficiently close to the connected exhaust system.
  • the space under the floor of the vehicle body can be fully occupied by the battery pack, which can maximize the available space of the battery pack and is beneficial to the overall layout of the vehicle body floor.
  • the threshold beam 1 may include a first beam body 11 and a second beam body 12, wherein the first beam body 11 and the second beam body 12 are arranged opposite to each other to form the above-mentioned first accommodation space 13.
  • the threshold beam 1 is designed as a split structure by this design method, that is, the threshold beam 1 is formed by connecting the first beam body 11 and the second beam body 12 to each other, which can facilitate the installation of the exhaust pipe 2 in the threshold beam 1, and solve the assembly problem between the exhaust pipe 2 and the threshold beam 1.
  • the first beam body 11 and the second beam body 12 can be detachably connected. In this way, when the exhaust pipe 2 needs to be replaced or disassembled, the exhaust pipe 2 can be removed from the door sill beam 1 by disassembling the first beam body 11 and the second beam body 12, which facilitates the disassembly of the exhaust pipe 2.
  • the first beam body 11 and the second beam body 12 can be constructed in any suitable manner. Referring to FIGS. 4 and 5 , a first arc-shaped groove 1121 can be formed on the first beam body 11, and a second arc-shaped groove 1221 can be formed on the second beam body 12, and the first arc-shaped groove 1121 and the second arc-shaped groove 1221 are connected to form a first accommodation space 13.
  • the first beam body 11 may include a first combining portion 112
  • the second beam body 12 may include a second combining portion 122.
  • An extension portion 1211 (the same as the extension portion 1211 below) is provided on at least one of the first combining portion 112 and the second combining portion 122, so that the first combining portion 112 and the second combining portion 122 have an overlapping area 18, and a fastener is passed through the overlapping area 18 to connect the first combining portion 112 and the second combining portion 122, thereby realizing the connection between the first beam body 11 and the second beam body 12.
  • the exhaust pipe 2 may include a first pipe section 201, a second pipe section 202 and a third pipe section 203.
  • the second pipe section 202 may be accommodated in the first accommodation space 13 and may be configured as a U-shaped pipe section.
  • Two first avoidance holes 14 may be provided on the door sill. The two first avoidance holes 14 are arranged at intervals along the length direction of the door sill. Both ends of the second pipe section 202 extend from the first avoidance holes 14 and are respectively connected to the first pipe section 201 and the third pipe section 203.
  • the front end of the first pipe section 201 is used to be connected to the engine of the vehicle, and the rear end of the third pipe section 203 is used to be connected to the rear section of the exhaust pipe 2.
  • the exhaust 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 section of the exhaust pipe 2, and is discharged into the atmosphere after being processed by the exhaust muffler.
  • the two first avoidance holes 14 can be set at any suitable position of the door sill beam.
  • the two first avoidance holes 14 can be set at the two ends of the door sill beam, that is, the two ends of the first accommodating space 13 are connected.
  • the two ends of the second pipe section 202 pass through the two ends of the door sill beam. In this way, it can avoid the battery pack and be sufficiently close to the connected exhaust system, which is beneficial to the overall layout of the exhaust pipe 2.
  • the two first avoidance holes 14 can be set on the side of the door sill beam. In this case, the two ends of the second pipe section 202 pass through the side of the door sill beam.
  • the first beam body 11 and the second beam body 12 may be arranged in any suitable manner to form the rocker beam 1 .
  • the first beam body 11 and the second beam body 12 can be arranged opposite to each other in the transverse direction and detachably connected, and the second beam body 12 is located on the inner side of the first beam body 11 in the transverse direction, that is, the first beam body 11 is arranged away from the battery pack, and the second beam body 12 is arranged close to the battery pack, and the second beam body 12 is provided with a first avoidance hole 14 on the side of the second beam body 12 that is laterally away from the first beam body 11.
  • the two first avoidance holes 14 are arranged on the side of the second beam body 12 close to the battery pack.
  • the arrangement direction of the second pipe section 202 integrated in the sill beam 1 has little effect on the side of the vehicle body and can be implemented on a conventional vehicle body structure, wherein the two first avoidance holes 14 are respectively arranged close to the two ends of the second beam body 12, so that it can avoid the battery pack and be sufficiently close to the connected exhaust system, so that the overall arrangement of the exhaust pipe 2 is very compact.
  • the first beam body 11 and the second beam body 12 may be constructed in any suitable manner.
  • the first beam body 11 may include a first main body 111 and a first combining portion 112, the first combining portion 112 includes a first arc-shaped groove 1121 and two first fitting walls 1122, the two first fitting walls 1122 both extend in a vertical direction and are respectively located at two ends of the first arc-shaped groove 1121, the first main body 111 is connected to the two first fitting walls 1122;
  • the second beam body 12 may include a second main body 121 and a second combining portion 122, the second combining portion 122 includes a second arc-shaped groove 1221 and two second fitting walls 1222, the two second fitting walls 1222 both extend in a vertical direction and are respectively located at two ends of the second arc-shaped groove 1221, the second main body 121 is connected to the two second fitting walls 1222, and the second main body 121 includes an extending portion 1211, the extending portion 1211 extends laterally
  • the upper side surface of the first main body 111 and the lower side surface of the first main body 111 can be provided with a plurality of first connection holes 1111, and the plurality of first connection holes 1111 are arranged at intervals along the length direction of the first main body 111.
  • extension parts 1211 of the second beam body 12 which are arranged at intervals in the vertical direction and are used to overlap with the first main body 111, wherein the two extension parts 1211 are respectively provided with a plurality of second connection holes 1212, and the plurality of second connection holes 1212 are arranged at intervals along the length direction of the second main body 121, and a plurality of fasteners pass through the corresponding first connection holes 1111 and second connection holes 1212 to fix the first beam body 11 and the second beam body 12.
  • the above-mentioned fasteners can be any suitable fastening components such as rivets, and the present disclosure does not specifically limit this.
  • the threshold beam 1 may further include a positioning structure 150 , through which the first beam body 11 and the second beam body 12 can be positioned to facilitate the installation of the first beam body 11 and the second beam body 12 .
  • the positioning structure 150 can be constructed in any suitable manner.
  • the positioning structure 150 can include a positioning protrusion 151 and a positioning groove 152, wherein the positioning protrusion 151 and the positioning groove 152 extend along the length direction of the threshold beam 1, one of the first fitting wall 1122 and the second fitting wall 1222 is provided with the positioning protrusion 151, and the other of the first fitting wall 1122 and the second fitting wall 1222 is provided with the positioning groove 152, and the positioning between the first beam body 11 and the second beam body 12 is achieved by the mutual cooperation between the positioning protrusion 151 and the positioning groove 152, so as to facilitate the installation of the first beam body 11 and the second beam body 12.
  • the first fitting wall 1122 is provided with the above-mentioned positioning protrusion 151
  • the second fitting wall 1222 is provided with the above-mentioned positioning groove 152.
  • the first fitting wall 1122 is provided with the above-mentioned positioning groove 152
  • the second fitting wall 1222 is provided with the above-mentioned positioning protrusion 151
  • the positioning protrusion 151 is integrally formed on the first beam body 11, and the positioning groove 152 is integrally formed on the second beam body 12.
  • the positioning structure 150 may include a positioning pin and a positioning hole.
  • One of the first fitting wall 1122 and the second fitting wall 1222 is provided with the above-mentioned positioning pin, and the other is provided with the above-mentioned positioning hole.
  • the positioning between the first beam body 11 and the second beam body 12 is achieved by the cooperation of the positioning pin and the positioning hole.
  • first beam body 11 and the second beam body 12 can be arranged relative to each other in the vertical direction, that is, the first beam body 11 and the second beam body 12 are arranged up and down.
  • semicircular holes are respectively provided on the side of the first beam body 11 close to the battery pack and the side of the second beam body 12 close to the battery pack.
  • the two semicircular holes are butt jointed with each other to form a first avoidance hole 14, wherein the first beam body 11 and the second beam body 12 can be provided with the above-mentioned semicircular holes at positions close to their ends, so that the position where the second pipe section 202 passes through the threshold beam 1 is located at both ends of the threshold beam 1, so that it can avoid the battery pack and be sufficiently close to the connected exhaust system, so that the overall arrangement of the exhaust pipe 2 is very compact.
  • the exhaust pipe 2 may include a cooling sleeve 205, which is sleeved on the second pipe section 202 and has a liquid inlet 2051 and a liquid outlet 2052, and both ends of the cooling sleeve 205 are closed and connected to the second pipe section 202, and a cooling chamber 2053 is formed between the cooling sleeve 205 and the second pipe section 202, and the liquid inlet 2051 and the liquid outlet 2052 are arranged at intervals along the length direction of the cooling sleeve 205 and are respectively connected to the cooling chamber 2053.
  • two second avoidance holes 16 are arranged on the door sill beam 1, and the two second avoidance holes 16 are arranged at intervals along the length direction of the door sill beam and correspond to the liquid inlet 2051 and the liquid outlet 2052 respectively.
  • the coolant delivery pipe in the vehicle cooling system can pass through the second avoidance holes 16 to be connected with the liquid inlet 2051, so as to guide the coolant to the cooling chamber 2053.
  • the coolant after heat exchange can be discharged from the liquid outlet 2052 through the coolant delivery pipe in the vehicle cooling system, so as to cool down the door sill beam 1 and dissipate heat for the exhaust pipe 2, so as to slow down or prevent the aging of plastic parts and rubber parts around the exhaust pipe 2, and avoid affecting the performance and service life of the battery pack inside the battery pack due to high temperature.
  • the lower vehicle body structure 100 may further include a cooling water pipe 3, wherein the cooling water pipe 3 is arranged parallel to the sill beam 1 and includes a liquid inlet pipe 31 and a liquid outlet pipe 32, the liquid inlet 2051 and the liquid outlet 2052 are respectively provided with a water inlet joint 207 and a water outlet joint 208, the water inlet joint 207 and the water outlet joint 208 respectively pass through the second avoidance hole 16 and are respectively connected to the liquid inlet pipe 31 and the liquid outlet pipe 32, the liquid inlet pipe 31 is used to transport the coolant to the cooling chamber 2053 of the cooling jacket 205, and the coolant after heat exchange is discharged from the cooling chamber 2053 through the liquid outlet pipe 32.
  • the cooling water pipe 3 is arranged parallel to the sill beam 1 and includes a liquid inlet pipe 31 and a liquid outlet pipe 32, the liquid inlet 2051 and the liquid outlet 2052 are respectively provided with a water inlet joint 207 and a water outlet joint 208, the water inlet joint 207 and the water outlet joint 208 respectively
  • the liquid inlet pipe 31 and the liquid outlet pipe 32 are arranged parallel to the sill beam 1 and close to the sill beam 1, so that the arrangement is more compact, and the liquid inlet pipe 31 and the liquid outlet pipe 32 are connected from the side of the sill beam 1, which is conducive to the compact arrangement of the cooling pipeline of the whole vehicle.
  • the exhaust pipe 2 may include an intermediate sleeve 206, the intermediate sleeve 206 is disposed between the second pipe section 202 and the cooling sleeve 205, and both ends of the intermediate sleeve 206 are sealedly connected to the second pipe section 202, both ends of the cooling sleeve 205 are sealedly connected to the intermediate sleeve 206, an intermediate chamber 2061 is formed between the intermediate sleeve 206 and the second pipe section 202, and the cooling chamber is formed between the intermediate sleeve 206 and the cooling sleeve 205.
  • the intermediate sleeve 206 is provided with a mounting hole 2062, the mounting hole 2062 is installed with a plunger valve 4, the second pipe section 202 is provided with a through hole 2021, and the plunger valve 4 opens or closes the through hole 2021 to connect the second pipe section 202 with the intermediate chamber 2061 or block the second pipe section 202 from the intermediate chamber 2061.
  • the plunger valve 4 opens the through hole 2021, the second pipe section 202 is connected to the middle chamber 2061, and the high-temperature exhaust gas transported in the second pipe section 202 can enter the middle chamber. 2061, heat is exchanged with the coolant in the cooling chamber 2053.
  • the exhaust gas energy can be recovered by the vehicle heat pump system, thereby improving the vehicle warm-up speed and economy.
  • the intermediate chamber 2061 can reduce the heat transfer from the high-temperature exhaust gas in the second pipe section 202 to the cooling chamber 2053, thereby playing a heat insulation role.
  • a third avoidance hole 17 is provided on the threshold beam 1, and the plunger valve 4 passes through the third avoidance hole 17 and is exposed in the first accommodation space 13, so as to facilitate the connection between the valve core 42 and the plunger valve controller 5 (same below).
  • the lower body structure 100 may 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 on the intermediate sleeve 206, the valve core 42 is movably arranged in the valve body 41 and extends into the mounting hole 2062, the plunger valve controller 5 is connected to the valve core 42 and fixed on the door sill beam 1, and the movement of the valve core 42 can be controlled by the plunger valve controller 5, thereby realizing the opening and closing of the through hole 2021.
  • the plunger valve controller 5 includes a valve body 41 and a valve core 42
  • the valve body 41 is fixed on the intermediate sleeve 206
  • the valve core 42 is movably arranged in the valve body 41 and extends into the mounting hole 2062
  • the plunger valve controller 5 is connected to the valve core 42 and fixed on the door sill beam 1, and the movement of the valve core 42 can be controlled by the plunger valve controller 5, thereby realizing the opening and closing of the through hole 2021.
  • the second pipe section 202 includes a straight pipe section 2022 and a bent section 2023 connected to both ends of the straight pipe section 2022.
  • the length of the straight pipe section 2022, the length of the intermediate sleeve 206 and the length of the cooling sleeve 205 are successively decreased.
  • the cooling sleeve 205 is overlapped on the intermediate sleeve 206, and the intermediate sleeve 206 is overlapped on the straight pipe section 2022, so as to facilitate welding the cooling sleeve 205 to the intermediate sleeve 206 and welding the intermediate sleeve 206 to the straight pipe section 2022.
  • the second pipe segment 202 can be bent to form a U-shape after the intermediate sleeve 206 and the cooling sleeve 205 are installed and fixed on the second pipe segment 202 in sequence.
  • the straight pipe segment 2022 and the bent segment 2023 are formed as one piece, or, after the intermediate sleeve 206 and the cooling sleeve 205 are installed and fixed on the straight pipe segment 2022 in sequence, the two bent segments 2023 are welded to the two ends of the straight pipe segment 2022 to form a U-shaped second pipe segment 202.
  • the present disclosure does not make any specific restrictions on this.
  • the exhaust pipe 2 may include a first thermal insulation sleeve 209 and two second thermal insulation sleeves 2010, the first thermal insulation sleeve 209 is provided with an opening (not shown), the opening extending along the length direction of the first thermal insulation sleeve 209, the first thermal insulation sleeve 209 is sleeved on the straight pipe section 2022, and the design of the opening can facilitate the sleeve of the first thermal insulation sleeve 209 on the straight pipe section 2022, thereby reducing the difficulty of assembling the first thermal insulation sleeve 209 and the straight pipe section 2022, the two second thermal insulation sleeves 2010 are respectively sleeved on the bending section 2023, wherein the two second thermal insulation sleeves 2010 are adapted to the shape of the bending section 2023 and are constructed in an L shape, and through the arrangement of the first thermal insulation sleeve 209 and the second thermal insulation sleeve 2010, the second pipe section
  • the ends of the two bent sections 2023 are respectively provided with fixing flanges 6, which are sleeved on the second heat insulation sleeve 2010 and fixedly connected to the threshold beam 1, so as to limit the second pipe section 202 in the first accommodation space 13.
  • the fixing flange 6 may be a split structure, that is, the fixing flange 6 is divided into two flange parts, the two flange parts are respectively configured as semicircular structures and clamp the second heat insulation sleeve 2010 along the radial direction of the second pipe section 202, and the two flange parts are respectively fixed to the threshold beam 1 by, for example, bolts, screws, etc., for easy assembly.
  • the vehicle includes a subframe longitudinal beam 7
  • the exhaust pipe 2 includes a fourth pipe segment 204
  • the subframe longitudinal beam 7 forms a second accommodating space 71
  • the fourth pipe segment 204 is accommodated in the second accommodating space 71 and is connected to the third pipe segment 203, so that the second accommodating space 71 formed by the subframe longitudinal beam 7 can be used for the arrangement of the fourth pipe segment 204 of the exhaust pipe 2, so that the fourth pipe segment 204 is embedded and integrated with the subframe longitudinal beam 7.
  • the fourth pipe segment 204 does not need to occupy additional space, and the space under the rear floor of the vehicle body can be fully occupied by the suspension, the power system, etc., so that the space under the rear floor of the vehicle body can be fully utilized and the ground clearance of the whole vehicle can be improved.
  • the second pipe section 202 and the fourth pipe section 204 of the exhaust pipe 2 are respectively integrated into the rocker beam 1 and the subframe longitudinal beam 7, and are almost invisible, so that the floor part and the rear floor part of the whole vehicle can develop a hybrid and pure electric common platform solution.
  • the second pipe section 202 of the exhaust pipe 2 is the middle section of the exhaust pipe 2
  • the fourth pipe section 204 of the exhaust pipe 2 is the rear end section of the exhaust pipe 2.
  • the sub-frame longitudinal beam 7 may include an upper plate 72 and a lower plate 73, the upper plate 72 and the lower plate 73 are respectively configured in a ⁇ shape, and the upper plate 72 and the lower plate 73 are interlocked and connected to form a second accommodating space 71 for the integration of the fourth pipe section 204 of the exhaust pipe 2.
  • This design of the sub-frame longitudinal beam 7 can solve the assembly problem of the sub-frame longitudinal beam 7 and the fourth pipe section 204 of the exhaust pipe 2, and facilitates the integration of the fourth pipe section 204 in the sub-frame longitudinal beam 7.
  • the upper plate 72 and the lower plate 73 may be fixedly connected together by welding, and the present disclosure does not specifically limit this.
  • the fourth pipe segment 204 can be provided with a third heat insulating sleeve 2011.
  • the fourth pipe segment 204 can be separated from the sub-frame longitudinal beam 7 to reduce the heat conduction of the fourth pipe segment 204 to the sub-frame longitudinal beam 7 and the vibration transmission to the entire vehicle.
  • the fourth pipe segment 204 can be limited in the second accommodation space 71 by the limiting plate 8, and the upper plate 72 is provided with a limiting hole 721 for the limiting plate 8 to pass through, thereby preventing the limiting plate 8 from interfering with the upper plate 72, and the limiting plate 8 is hooped on the fourth pipe segment 204 and fixedly connected to the lower plate 73, so as to realize the fourth pipe segment 204.
  • the pipe section 204 is confined in the second receiving space 71 .
  • first pipe section 201 is connected to the engine
  • second pipe section 202 is connected between the first pipe section 201 and the third pipe section 203
  • third pipe section 203 is connected to the fourth pipe section 204
  • the end of the fourth pipe section 204 is connected to the exhaust muffler, so that the exhaust gas generated during the operation of the engine is discharged into the atmosphere after being processed by the exhaust muffler.
  • 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 can be connected through a pipeline structure, and the present disclosure does not make specific restrictions on this.
  • first pipe section 201, the second pipe section 202, the third pipe section 203 and the fourth pipe section 204 can be a whole section of pipeline, or a whole section of pipeline formed by connecting multiple sections of branch pipes, and the present disclosure does not make specific restrictions on this.
  • a part of the exhaust pipe 2 i.e., the second pipe section 202 is integrated into the sill beam 1, so that the space under the floor in the vehicle body can be completely occupied by the battery pack, and the available space of the battery pack can be maximized
  • another part of the exhaust pipe 2 i.e., the fourth pipe section 204 is integrated on the subframe longitudinal beam 7, and the space under the rear floor of the vehicle body can be completely occupied by the suspension, the power system, etc., so that the space under the rear floor of the vehicle body can be fully utilized and the ground clearance of the whole vehicle can be improved.
  • the second pipe section 202 of the exhaust pipe 2 into a three-layer structure, that is, the interior of the second pipe section 202 is used for the circulation of the exhaust gas generated by the engine, the middle sleeve 206 is used for heat insulation or heat recovery, and the cooling sleeve 205 is used for the circulation of the coolant, such a design is conducive to the heat recovery of the exhaust gas, and is conducive to improving the warm-up speed and economy of the whole vehicle.
  • the integration of the exhaust pipe 2 in the sill beam 1 can be facilitated, the assembly problem between the exhaust pipe 2 and the sill beam 1 can be solved, and the disassembly of the exhaust pipe 2 can also be facilitated.
  • the present disclosure further provides a vehicle, which includes the above lower vehicle body structure 100 and thus also has the above characteristics. In order to avoid repetition, they will not be described here.

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Abstract

一种下车体结构及车辆，包括门槛梁和排气管，所述门槛梁内形成第一容纳空间，所述排气管的至少部分容纳在所述第一容纳空间中。

Description

下车体结构及车辆
相关申请的交叉引用
本公开要求在2022年11月16日提交中国专利局、申请号为202211436684.0、名称为“下车体结构及车辆”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及车辆技术领域，具体地，涉及一种下车体结构及车辆。
背景技术
相关技术中，车身地板上设置有排气管安装部和电池安装部，电池安装部内设置有用于容纳电芯模组的容纳空间，排气管安装部设置在电池安装部的侧边并且设置有避让槽，该避让槽包围部分排气管，由此实现电池包与排气管在横向上并排布置。这样，车身地板下方的空间被排气管和电池包共同占据，电池包无法最大化利用车身地板下方的空间。
发明内容
本公开的目的是提供一种下车体结构及车辆，能够实现电池包可利用空间最大化。
为了实现上述目的，本公开提供一种下车体结构，所述下车体结构包括：
门槛梁，所述门槛梁内形成第一容纳空间；和
排气管，所述排气管的至少部分容纳在所述第一容纳空间中。
可选地，所述门槛梁包括第一梁体和第二梁体，所述第一梁体和所述第二梁体连接，所述第一梁体和所述第二梁体相对设置以形成所述第一容纳空间。
可选地，所述第一梁体与所述第二梁体可拆卸地连接。
可选地，所述第一梁体上形成有第一弧形凹槽，所述第二梁体上形成有第二弧形凹槽，所述第一弧形凹槽与所述第二弧形凹槽对应以形成所述第一容纳空间。
可选地，所述第一梁体包括第一结合部分，所述第二梁体包括第二结合部分，所述第一结合部分及所述第二结合部分的至少一者上设置有延伸部分，以使所述第一结合部分与所述第二结合部分具有重合区域；紧固件穿设于所述重合区域以连接所述第一结合 部分及所述第二结合部分。
可选地，所述门槛梁还包括定位结构，所述定位结构包括定位凸起和定位凹槽，所述定位凸起和所述定位凹槽的其中一者设置在所述第一梁体上，另一者设置在所述第二梁体上。
可选地，所述排气管包括第一管段、第二管段和第三管段，所述第二管段容纳在所述第一容纳空间中并且构造为U型管段，所述门槛梁上设置有两个第一避让孔，两个第一避让孔沿所述门槛梁的长度方向间隔设置，所述第二管段的两端从所述第一避让孔伸出并且分别与所述第一管段和所述第三管段相连。
可选地，所述第一梁体和所述第二梁体相对布置并且可拆卸地连接，所述第二梁体在横向上位于所述第一梁体的内侧，并且所述第二梁体在所述横向上背离所述第一梁体的一侧设置有所述第一避让孔，两个所述第一避让孔分别靠近所述第二梁体的两个端部布置。
可选地，所述排气管包括冷却套管，所述冷却套管套设在所述第二管段上并且开设有入液口和出液口，并且所述冷却套管的两端封闭地连接于所述第二管段，所述冷却套管与所述第二管段之间形成有冷却腔室，所述入液口与所述出液口沿所述冷却套管的长度方向间隔布置并且分别与所述冷却腔室连通。
可选地，所述下车体结构包括冷却水管，所述冷却水管平行于所述门槛梁布置并且包括入液管和出液管，所述入液口和所述出液口分别安装有进水接头和出水接头，所述进水接头和所述出水接头分别与所述入液管和所述出液管连接。
可选地，所述排气管包括中间套管，所述中间套管设置在所述第二管段与所述冷却套管之间，并且所述中间套管的两端封闭地连接于所述第二管段，所述冷却套管的两端封闭地连接于所述中间套管，所述中间套管与所述第二管段之间形成有中间腔室，所述冷却腔室形成在所述冷却套管与所述中间套管之间；所述中间套管上设置有安装孔，所述安装孔安装有柱塞阀，所述第二管段设置有通孔，所述柱塞阀开启或封闭所述通孔，以连通所述第二管段与所述中间腔室或阻隔所述第二管段与所述中间腔室。
可选地，所述下车体结构包括柱塞阀控制器，所述柱塞阀包括阀体和阀芯，所述阀体固定在所述中间套管上，所述阀芯活动地设置在所述阀体中并且伸入所述安装孔中，所述柱塞阀控制器与所述阀芯连接并且固定在所述门槛梁上。
可选地，所述第二管段包括直管段以及连接在所述直管段两端的折弯段，所述直管 段的长度、所述中间套管的长度以及所述冷却套管的长度依次递减。
可选地，所述排气管包括第一隔热套和第二隔热套，所述第一隔热套套设于所述直管段，所述第二隔热套套设于所述折弯段。
可选地，两个所述折弯段的端部分别设置有固定法兰，所述固定法兰套设在所述第二隔热套上并且与所述门槛梁固定连接。
可选地，所述下车体结构包括副车架纵梁，所述排气管包括第四管段，所述副车架纵梁形成有第二容纳空间，所述第四管段容纳于所述第二容纳空间并且与所述第三管段相连。
可选地，所述第四管段套设有第三隔热套。
可选地，所述副车架纵梁包括上板和下板，并且所述上板和所述下板相互扣合并连接以形成所述第二容纳空间。
可选地，所述第四管段通过限位板限位在所述第二容纳空间中，所述上板设置有供所述限位板穿过的限位孔，所述限位板箍设在所述第四管段上并且与所述下板固定连接。
在上述技术方案的基础上，本公开还提供一种车辆，所述车辆包括上述下车体结构。
通过上述技术方案，在本公开提供的下车体结构中，门槛梁内形成有第一容纳空间，排气管的至少部分容纳在该第一容纳空间，这样，门槛梁的内部空间能够用来布置排气管，排气管不需要再占用额外的空间，既能够避开电池也能够充分接近相连接的排气系统，车身中地板下方的空间能够被电池包全部占据，能够实现电池包可利用空间最大化，有利于车身地板的整体布置。
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是根据本公开示例性实施例提供的车辆的结构示意图；
图2是根据本公开示例性实施例提供的车辆的另一结构示意图，其中，示出了排气管的第二管段容纳在所述门槛梁中；
图3是根据本公开示例性实施例提供的车辆中的门槛梁的结构示意图；
图4是根据本公开示例性实施例提供的车辆中的门槛梁的另一结构示意图；
图5是图3中沿A-A线剖切的剖视图；
图6是根据本公开示例性实施例提供的车辆中的排气管的第二管段的结构示意图；
图7是根据本公开示例性实施例提供的车辆中的排气管的第二管段的剖视示意图；
图8是根据本公开示例性实施例提供的车辆的又一结构示意图；
图9是根据本公开示例性实施例提供的车辆中的副车架纵梁和排气管的第四管段的结构示意图。
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
在本公开中，在未作相反说明的情况下，使用的方位词如“上、下”通常是指相应部件处于使用状态下在重力方向上相对的“上、下”，“内、外”是相对于对应的部件自身轮廓而言的“内、外”。另外，“前、后”是以车辆为基础进行定义的，车头所在方位为“前”，车尾所在方位为“后”。此外，本公开所使用的术语“第一”、“第二”、“第三”、“第四”等是为了区分一个要素和另一个要素，不具有顺序性和重要性。在下面的描述中，当涉及到附图时，除非另有解释，不同的附图中相同的附图标记表示相同或相似的要素。上述定义仅用于解释和说明本公开，不应当理解为对本公开的限制。
根据本公开的示例性实施方式，参考图1至图9中所示，提供一种下车体结构100，该下车体结构100包括门槛梁1和排气管2，门槛梁1内形成第一容纳空间13，排气管2的至少部分容纳在第一容纳空间13中。
通过上述技术方案，在本公开提供的下车体结构100中，门槛梁1内形成有第一容纳空间13，排气管2的至少部分容纳在该第一容纳空间13，这样，门槛梁1的内部空间能够用来布置排气管2，排气管2不需要再占用额外的空间，既能够避开电池也能够充分接近相连接的排气系统，车身中地板下方的空间能够被电池包全部占据，能够实现电池包可利用空间最大化，有利于车身地板的整体布置。
在本公开提供的示例性实施方式中，门槛梁1可以包括第一梁体11和第二梁体12，其中，第一梁体11与第二梁体12相对设置以形成上述第一容纳空间13。通过这种设计方式将门槛梁1设计为分体式结构，即门槛梁1通过第一梁体11和第二梁体12相互连接而形成，能够便于将排气管2安装在门槛梁1中，解决排气管2与门槛梁1之间的装配问题。
其中，第一梁体11和第二梁体12可以可拆卸地连接，这样，在排气管2需要更换或者拆卸的情况，可以通过拆卸第一梁体11与第二梁体12实现将排气管2从门槛梁1中取出，便于排气管2的拆卸。
在本公开提供的示例性实施方式中，第一梁体11和第二梁体12可以以任意合适的方式构造。参考图4和图5中所示，第一梁体11上可以形成有第一弧形凹槽1121，第二梁体12上可以形成有第二弧形凹槽1221，第一弧形凹槽1121与第二弧形凹槽1221对接以形成第一容纳空间13。
其中，为了便于第一梁体11与第二梁体12的连接，第一梁体11可以包括第一结合部分112，第二梁体12可以包括第二结合部分122，第一结合部分112及第二结合部分122的至少一者上设置有延伸部分1211(同下文延伸部分1211)，以使第一结合部分112与第二结合部分122具有重合区域18，紧固件穿设于该重合区域18以连接第一结合部分112和第二结合部分122，从而实现第一梁体11与第二梁体12的连接。
在本公开提供的示例性实施方式中，结合参考图2至图6中所示，排气管2可以包括第一管段201、第二管段202和第三管段203，第二管段202容纳在第一容纳空间13中并且可以构造为U型管段，门槛梁上可以设置有两个第一避让孔14，两个第一避让孔14沿门槛梁的长度方向间隔设置，第二管段202的两端从第一避让孔14伸出并且分别与第一管段201和第三管段203相连。其中，第一管段201的前端用于与车辆的发动机相连，第三管段203的后端用于与排气管2的后段部分相连，通过第一管段201、第二管段202、第三管段203以及排气管2的后段部分将发动机所产生的排气输送至排气消声器，经排气消声器处理后排放至大气环境中。
另外，两个第一避让孔14可以设置在门槛梁任意合适的位置。在一种实施方式中，两个第一避让孔14可以设置在门槛梁的两端部，即第一容纳空间13的两个端部是相通的，在此情况下，第二管段202的两端从门槛梁的两端部穿出，这样，既可以避开电池包，又可以充分接近相连接的排气系统，有利于排气管2路的整体布置。在另一种实施方式中，参考图3和图4中所示，两个第一避让孔14可以设置在门槛梁的侧面上，在此情况下，第二管段202的两端从门槛梁的侧面穿出，通过这种布置方式能够使得排气管2的整体布置更加紧凑。其中，在一实施例中，两个第一避让孔14设置在门槛梁的内侧面上，这样，第二管段202集成在门槛梁1中的布置方式对车身侧围影响较小，可在常规车身结构上实现。此外，“内侧面”中的方位词“内”以门槛梁1与电池包的相对位置进 行定义的，靠近电池包的方位为“内”，反之为“外”，门槛梁1的门槛梁中靠近电池包的侧面为“内侧面”。
在本公开提供的示例性实施方式中，第一梁体11和第二梁体12可以以任意合适的方式布置以形成门槛梁1。
在一种实施方式中，参考图3至图5中所示，第一梁体11和第二梁体12可以在横向上相对布置并且可拆卸地连接，第二梁体12在横向上位于第一梁体11的内侧，即第一梁体11远离电池包布置，第二梁体12靠近电池包布置，并且第二梁体12在横向上背离第一梁体11的一侧设置有第一避让孔14，也就是说，两个第一避让孔14设置在第二梁体12靠近电池包的一侧，这样，第二管段202集成在门槛梁1中的布置方向对车身侧围影响较小，可在常规车身结构上实现，其中，两个第一避让孔14分别靠近第二梁体12的两个端部布置，这样，既能够避开电池包，又能够充分接近相连接的排气系统，使得排气管2的整体布置十分紧凑。
其中，第一梁体11和第二梁体12可以以任意合适的方式构造。可选择地，参考图4和图5中所示，第一梁体11可以包括第一主体111和第一结合部分112，第一结合部分112包括第一弧形凹槽1121和两个第一贴合壁1122，两个第一贴合壁1122均沿竖直方向延伸并且分别位于第一弧形凹槽1121的两端，第一主体111与两个第一贴合壁1122相连；第二梁体12可以包括第二主体121和第二结合部分122，第二结合部分122包括第二弧形凹槽1221和两个第二贴合壁1222，两个第二贴合壁1222均沿竖直方向延伸并且分别位于第二弧形凹槽1221的两端，第二主体121与两个第二贴合壁1222相连，并且第二主体121包括延伸部分1211，该延伸部分1211沿横向延伸；第一弧形凹槽1121和第二弧形凹槽1221相互对接以形成第一容纳空间13，第一贴合壁1122与第二贴合壁1222相互贴合，第一主体111设置有第一连接孔1111，延伸部分1211设置有第二连接孔1212并且搭接于第一主体111上，紧固件穿设于第一连接孔1111和第二连接孔1212，以将第一梁体11与第二梁体12固定连接，由此以实现门槛梁1的分体式设计，并且解决门槛梁1与排气管2之间的装配问题，便于将排气管2集成在门槛梁1中，以节省车身中地板下方的空间，使得车身中地板下方的空间能够被电池包全部占据，实现电池包可利用空间最大化，有利于车身地板的整体布置。为了提高第一梁体11与第二梁体12之间的连接可靠性，第一主体111的上侧面和第一主体111的下侧面均可以设置有多个第一连接孔1111，多个第一连接孔1111沿第一主体111的长度方向间隔布置，第二梁体 12的延伸部分1211设置有两个，两个延伸部分1211沿垂向间隔布置并且用于与第一主体111搭接，其中，两个延伸部分1211分别设置有多个第二连接孔1212，多个第二连接孔1212沿第二主体121的长度方向间隔布置，通过多个紧固件穿过相对应的第一连接孔1111和第二连接孔1212，以将第一梁体11与第二梁体12固定连接。此外，上述紧固件可以为铆钉等任意合适的紧固构件，本公开对此不作具体限制。
此外，为了便于第一梁体11与第二梁体12的定位安装，门槛梁1还可以包括定位结构150，通过该定位结构150能够对第一梁体11与第二梁体12进行定位，以便于第一梁体11与第二梁体12的安装。
其中，该定位结构150可以以任意合适的方式构造。可选择地，参考图4和图5中所示，该定位结构150可以包括定位凸起151和定位凹槽152，定位凸起151与定位凹槽152沿门槛梁1的长度方向延伸，第一贴合壁1122和第二贴合壁1222中的一者设置有定位凸起151，第一贴合壁1122和第二贴合壁1222中的另一者设置有定位凹槽152，通过定位凸起151与定位凹槽152的相互配合，实现第一梁体11与第二梁体12之间的定位，以便于第一梁体11与第二梁体12的安装。在图4和图5所示出的实施例中，第一贴合壁1122设置有上述定位凸起151，第二贴合壁1222设置有上述定位凹槽152，在其它实施例中，也可以的是，第一贴合壁1122设置有上述定位凹槽152，第二贴合壁1222设置有上述定位凸起151，本公开对此不作具体限制。另外，定位凸起151一体成型在第一梁体11上，定位凹槽152一体成型在第二梁体12上，通过定位凸起151和定位凹槽152的设置，能够加强门槛梁1的结构强度，提高整车碰撞安全性能。在其它一些实施方式中，定位结构150可以包括定位销和定位孔，第一贴合壁1122和第二贴合壁1222中的一者设置有上述定位销，另一者设置有上述定位孔，通过定位销和定位孔的配合实现第一梁体11与第二梁体12之间的定位。
在另一些实施方式中，第一梁体11和第二梁体12可以在垂向上相对布置，即第一梁体11和第二梁体12上下布置，在此情况下，第一梁体11靠近电池包的一侧以及第二梁体12靠近电池包的一侧分别设置有半圆孔，在第一梁体11和第二梁体12相互组装后，两个半圆孔相互对接以形成第一避让孔14，其中，第一梁体11和第二梁体12可以在靠近二者端部的位置设置上述半圆孔，这样，第二管段202从门槛梁1中穿出的位置位于门槛梁1的两端，这样，既能够避开电池包，又能够充分接近相连接的排气系统，使得排气管2的整体布置十分紧凑。
由于发动机所产生的排气在输送过程中，仍携带有热量，因而排气所携带的热量会有部分传导至门槛梁1，为了确保门槛梁1的温度控制在正常范围内，在本公开提供的具体实施方式中，参考图6和图7中所示，排气管2可以包括冷却套管205，冷却套管205套设在第二管段202上并且开设有入液口2051和出液口2052，并且冷却套管205的两端封闭地连接于第二管段202，冷却套管205与第二管段202之间形成有冷却腔室2053，入液口2051与出液口2052沿冷却套管205的长度方向间隔布置并且分别与冷却腔室2053连通。其中，门槛梁1上设置有两个第二避让孔16，两个第二避让孔16沿门槛梁的长度方向间隔布置并且分别与入液口2051和出液口2052相对应，通过第二避让孔16的避让，使得整车冷却系统中的冷却液输送管能够穿过第二避让孔16以与入液口2051相连，以将冷却液引导至冷却腔室2053中，经过热交换后的冷却液可以通过整车冷却系统中的冷却液输送管从出液口2052排出，从而对门槛梁1进行冷却降温并对排气管2进行散热，以减缓或者防止排气管2周围的塑料件、橡胶件的老化，并且避免因高温而影响电池包内部的电池组的性能和使用寿命。
其中，参考图1和图2中所示，下车体结构100还可以包括冷却水管3，其中，冷却水管3平行于门槛梁1布置并且包括入液管31和出液管32，入液口2051和出液口2052分别安装有进水接头207和出水接头208，进水接头207和出水接头208分别穿出第二避让孔16并且分别与入液管31和出液管32连接，入液管31用于将冷却液输送至冷却套管205的冷却腔室2053中，经过热交换的冷却液经出液管32从冷却腔室2053中排出。其中，入液管31和出液管32平行于门槛梁1布置并且贴近于门槛梁1，这样布置更加紧凑，并且入液管31和出液管32从门槛梁1的侧面接出，有利于整车冷却管路紧凑化布置。
在本公开提供的示例性实施方式中，参考图6和图7中所示，排气管2可以包括中间套管206，中间套管206设置在第二管段202与冷却套管205之间，并且中间套管206的两端封闭地连接于第二管段202，冷却套管205的两端封闭地连接于中间套管206，中间套管206与第二管段202之间形成有中间腔室2061，冷却腔室形成在中间套管206与冷却套管205之间。中间套管206上设置有安装孔2062，安装孔2062安装有柱塞阀4，第二管段202设置有通孔2021，柱塞阀4开启或封闭通孔2021，以连通第二管段202与中间腔室2061或阻隔第二管段202与中间腔室2061。在柱塞阀4开启通孔2021时，第二管段202与中间腔室2061连通，第二管段202中所输送的高温排气可以进入中间腔室 2061中，以与冷却腔室2053中的冷却液进行热量交换，冷却腔室2053中的冷却液吸收排气热量后，可以利用整车热泵系统回收废气能量，提高整车暖机速度和经济性；在柱塞阀4封闭通孔2021时，中间腔室2061可以减弱第二管段202中高温排气向冷却腔室2053传热，起到隔热作用。其中，为了便于柱塞阀4的安装，门槛梁1上设置有第三避让孔17，柱塞阀4从第三避让孔17中穿出而外露于第一容纳空间13，以便于阀芯42与柱塞阀控制器5(同下文)的连接。
在本公开提供的示例性实施方式中，结合参考图2和图7中所示，下车体结构100可以包括柱塞阀控制器5，柱塞阀4包括阀体41和阀芯42，阀体41固定在中间套管206上，阀芯42活动地设置在阀体41中并且伸入安装孔2062中，柱塞阀控制器5与阀芯42连接并且固定在门槛梁1上，通过柱塞阀控制器5可以控制阀芯42的运动，从而实现通孔2021的开启和封闭。
其中，参考图6和图7中所示，第二管段202包括直管段2022以及连接在直管段2022两端的折弯段2023，为了便于中间套管206与直管段2022的连接以及冷却套管205与中间套管206的连接，直管段2022的长度、中间套管206的长度以及冷却套管205的长度依次递减，这样，冷却套管205搭接在中间套管206上，中间套管206搭接在直管段2022上，以便于将冷却套管205焊接在中间套管206上以及将中间套管206焊接在直管段2022上。此外，为了便于将中间套管206和冷却套管205套设在第二管段202上，可以在将中间套管206和冷却套管205依次安装并固定在第二管段202后，折弯第二管段202以形成U型，这种情况下，直管段2022与折弯段2023一体成型，或者，也可以在将中间套管206和冷却套管205依次安装并固定在直管段2022后，将两个折弯段2023焊接在直管段2022的两端，以形成U型的第二管段202，本公开对此不作具体限制。
在本公开提供的示例性实施方式中，参考图6中所示，排气管2可以包括第一隔热套209和两个第二隔热套2010，第一隔热套209设置有开口(未示出)，开口沿第一隔热套209的长度方向延伸，第一隔热套209套设于直管段2022，通过开口的设计能够便于第一隔热套209套设在直管段2022上，降低第一隔热套209与直管段2022之间的装配难度，两个第二隔热套2010分别套设于折弯段2023，其中，两个第二隔热套2010适配于折弯段2023的形状而构造为L型，通过第一隔热套209和第二隔热套2010的设置，能够将第二管段202与门槛梁1隔开，以减弱第二管段202对门槛梁1的热传导和对整车的振动传递。
在本公开提供的示例性实施方式中，为了实现将第二管段202限位在第一容纳空间13中，参考图2中所示，两个折弯段2023的端部分别设置有固定法兰6，固定法兰6套设在第二隔热套2010上并且与门槛梁1固定连接，以将第二管段202限制在第一容纳空间13中。其中，固定法兰6可以为分体式结构，即固定法兰6分为两个法兰部分，两个法兰部分分别构造为半圆形结构并且沿第二管段202的径向夹紧第二隔热套2010，并且两个法兰部分分别通过例如螺栓、螺钉等固定于门槛梁1，以便于装配。
在本公开提供的示例性实施方式中，参考图1和图8中所示，车辆包括副车架纵梁7，排气管2包括第四管段204，副车架纵梁7形成有第二容纳空间71，第四管段204容纳于第二容纳空间71并且与第三管段203相连，这样，副车架纵梁7所形成的第二容纳空间71能够用于排气管2的第四管段204的布置，实现第四管段204与副车架纵梁7内嵌集成，通过这样设计，第四管段204不需要再占用额外空间，车身后地板下方的空间能够被悬架、动力系统等全部占据，能够实现充分利用车身后地板下方的空间并且提高整车离地间隙。
通过上述方案，在本公开中，排气管2的第二管段202和第四管段204分别集成在门槛梁1和副车架纵梁7中，几乎隐藏不见，这样，整车中地板部分和后地板部分可以开发混动和纯电共平台方案。其中，排气管2的第二管段202为排气管2的中段部分，排气管2的第四管段204为排气管2的后端部分。
在本公开提供的示例性实施方式中，参考图9中所示，副车架纵梁7可以包括上板72和下板73，上板72和下板73分别构造为冖字型，并且上板72和下板73相互扣合并连接以形成第二容纳空间71，以用于排气管2的第四管段204的集成，通过副车架纵梁7的这种设计方式，能够解决副车架纵梁7与排气管2的第四管段204的装配问题，便于将第四管段204集成在副车架纵梁7中。其中，上板72和下板73可以通过焊接的方式固定连接在一起，本公开对此不作具体限制。
在本公开提供的示例性实施方式中，第四管段204可以套设有第三隔热套2011，通过第三隔热套2011的设置，能够将第四管段204与副车架纵梁7隔开，以减弱第四管段204对副车架纵梁7的热传导和对整车的振动传递。
在本公开提供的示例性实施方式中，第四管段204可以通过限位板8限位在第二容纳空间71中，上板72设置有供限位板8穿过的限位孔721，由此以防止限位板8与上板72产生干涉，限位板8箍设在第四管段204上并且与下板73固定连接，以此实现将第四 管段204限制在第二容纳空间71中。
在本公开中，第一管段201的一端与发动机相连，第二管段202连接在第一管段201和第三管段203之间，第三管段203与第四管段204相连，第四管段204的末端与排气消声器相连，由此以将发动机工作中所产生的排气经排气消声器处理后排放至大气环境中。其中，第一管段201与第二管段202之间、第二管段202与第三管段203之间以及第三管段203与第四管段204之间可以通过管道结构实现连接，本公开对此不作具体限制。此外，在本公开中，第一管段201、第二管段202、第三管段203以及第四管段204可以是一整段管道，也还可以是由多段分管道相接形成的一整段管道，本公开对此不作具体限制。
在本公开所提供的车辆中，排气管2的一部分(即第二管段202)集成在门槛梁1中，由此车身中地板下方的空间能够被电池包全部占据，能够实现电池包可利用空间最大化，并且排气管2的另一部分(即第四管段204)集成在副车架纵梁7上，车身后地板下方的空间能够被悬架、动力系统等全部占据，能够实现充分利用车身后地板下方的空间并且提高整车离地间隙。另外，通过将排气管2的第二管段202设计成三层式结构，即第二管段202的内部用于发动机所产生的排气的流通，中间套管206用于隔热或热回收，冷却套管205用于冷却液的流通，通过这样的设计，有利于对排气的热量回收，并且有利于提高整车暖机速度和经济性。此外，通过门槛梁1的分体式设计并且第一梁体11和第二梁体12可拆卸地连接，能够便于排气管2在门槛梁1中的集成，解决排气管2与门槛梁1之间的装配问题，也能够便于排气管2的拆卸。
在上述技术方案的基础上，本公开还提供一种车辆，所述车辆包括上述下车体结构100，因此同样具有上述特点，为了避免重复，在此不再赘述。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。

Claims (20)

  1. 一种下车体结构(100)，其特征在于，所述下车体结构(100)包括：
    门槛梁(1)，所述门槛梁(1)内形成第一容纳空间(13)；和
    排气管(2)，所述排气管(2)的至少部分容纳在所述第一容纳空间(13)中。
  2. 根据权利要求1所述的下车体结构(100)，其特征在于，所述门槛梁(1)包括第一梁体(11)及第二梁体(12)，所述第一梁体(11)与所述第二梁体(12)相对设置以形成所述第一容纳空间(13)。
  3. 根据权利要求2所述的下车体结构(100)，其特征在于，所述第一梁体(11)与所述第二梁体(12)可拆卸连接。
  4. 根据权利要求1或2所述的下车体结构(100)，其特征在于，所述第一梁体(11)上形成有第一弧形凹槽(1121)，所述第二梁体(12)上形成有第二弧形凹槽(1221)，所述第一弧形凹槽(1121)与所述第二弧形凹槽(1221)对接以形成所述第一容纳空间(13)。
  5. 根据权利要求1-4任一项所述的下车体结构(100)，其特征在于，所述第一梁体(11)包括第一结合部分(112)，所述第二梁体(12)包括第二结合部分(122)，所述第一结合部分(112)及所述第二结合部分(122)的至少一者上设置有延伸部分(1211)，以使所述第一结合部分(112)与所述第二结合部分(122)具有重合区域(18)；
    紧固件穿设于所述重合区域(18)以连接所述第一结合部分(112)及所述第二结合部分(122)。
  6. 根据权利要求1-5任一项所述的下车体结构(100)，其特征在于，所述门槛梁(1)还包括定位结构(150)，所述定位结构(150)包括定位凸起(151)和定位凹槽(152)，所述定位凸起(151)和定位凹槽(152)的其中一者设置在所述第一梁体(11)上，另一者设置在所述第二梁体(12)上。
  7. 根据权利要求2-6任一项所述的下车体结构(100)，其特征在于，所述排气管(2)包括第一管段(201)、第二管段(202)和第三管段(203)，所述第二管段(202)容纳在所述第一容纳空间(13)中并且构造为U型管段，所述门槛梁(1)上设置有两个第一避让孔(14)，两个所述第一避让孔(14)沿所述门槛梁(1)的长度方向间隔设置，所述第二管段(202)的两端从所述第一避让孔(14)伸出，并且所述第二管段(202)的两端分别与所述第一管段(201)和所述第三管段(203)相连。
  8. 根据权利要求7所述的下车体结构(100)，其特征在于，所述第一梁体(11)和所述第二梁体(12)相对布置并且可拆卸地连接，所述第二梁体(12)在横向上位于所述第一梁体(11)的内侧，并且所述第二梁体(12)在所述横向上背离所述第一梁体(11)的一侧设置有所述第一避让孔(14)，两个所述第一避让孔(14)分别靠近所述第二梁体(12)的两个端部布置。
  9. 根据权利要求7或8所述的下车体结构(100)，其特征在于，所述排气管(2)包括冷却套管(205)，所述冷却套管(205)套设在所述第二管段(202)上并且开设有入液口(2051)和出液口(2052)，并且所述冷却套管(205)的两端封闭地连接于所述第二管段(202)，所述冷却套管(205)与所述第二管段(202)之间形成有冷却腔室(2053)，所述入液口(2051)与所述出液口(2052)沿所述冷却套管(205)的长度方向间隔布置，并且所述入液口(2051)与所述出液口(2052)分别与所述冷却腔室(2053)连通。
  10. 根据权利要求9所述的下车体结构(100)，其特征在于，所述下车体结构(100)包括冷却水管(3)，所述冷却水管(3)平行于所述门槛梁(1)布置，并且所述冷却水管(3)包括入液管(31)和出液管(32)，所述入液口(2051)和所述出液口(2052)分别安装有进水接头(207)和出水接头(208)，所述进水接头(207)和所述出水接头(208)分别与所述入液管(31)和所述出液管(32)连接。
  11. 根据权利要求9或10所述的下车体结构(100)，其特征在于，所述排气管(2)包括中间套管(206)，所述中间套管(206)设置在所述第二管段(202)与所述冷却套管(205)之间，并且所述中间套管(206)的两端封闭地连接于所述第二管段(202)， 所述冷却套管(205)的两端封闭地连接于所述中间套管(206)，所述中间套管(206)与所述第二管段(202)之间形成有中间腔室(2061)，所述冷却腔室(2053)形成在所述冷却套管(205)与所述中间套管(206)之间；
    所述中间套管(206)上设置有安装孔(2062)，所述安装孔(2062)安装有柱塞阀(4)，所述第二管段(202)设置有通孔(2021)，所述柱塞阀(4)开启或封闭所述通孔(2021)，以连通所述第二管段(202)与所述中间腔室(2061)或阻隔所述第二管段(202)与所述中间腔室(2061)。
  12. 根据权利要求11所述的下车体结构(100)，其特征在于，所述下车体结构(100)包括柱塞阀控制器(5)，所述柱塞阀(4)包括阀体(41)和阀芯(42)，所述阀体(41)固定在所述中间套管(206)上，所述阀芯(42)活动地设置在所述阀体(41)中并且伸入所述安装孔(2062)中，所述柱塞阀控制器(5)与所述阀芯(42)连接并且固定在所述门槛梁(1)上。
  13. 根据权利要求11或12所述的下车体结构(100)，其特征在于，所述第二管段(202)包括直管段(2022)以及连接在所述直管段(2022)两端的折弯段(2023)，所述直管段(2022)的长度、所述中间套管(206)的长度以及所述冷却套管(205)的长度依次递减。
  14. 根据权利要求13所述的下车体结构(100)，其特征在于，所述排气管(2)包括第一隔热套(209)和第二隔热套(2010)，所述第一隔热套(209)套设于所述直管段(2022)，所述第二隔热套(2010)套设于所述折弯段(2023)。
  15. 根据权利要求14所述的下车体结构(100)，其特征在于，两个所述折弯段(2023)的端部分别设置有固定法兰(6)，所述固定法兰(6)套设在所述第二隔热套(2010)上并且与所述门槛梁(1)固定连接。
  16. 根据权利要求7-15中任一项所述的下车体结构(100)，其特征在于，所述下车体结构(100)包括副车架纵梁(7)，所述排气管(2)包括第四管段(204)，所述副车 架纵梁(7)形成有第二容纳空间(71)，所述第四管段(204)容纳于所述第二容纳空间(71)并且与所述第三管段(203)相连。
  17. 根据权利要求16所述的下车体结构(100)，其特征在于，所述第四管段(204)套设有第三隔热套(2011)。
  18. 根据权利要求16或17所述的下车体结构(100)，其特征在于，所述副车架纵梁(7)包括上板(72)和下板(73)，并且所述上板(72)和所述下板(73)相互扣合并连接以形成所述第二容纳空间(71)。
  19. 根据权利要求18所述的下车体结构(100)，其特征在于，所述第四管段(204)通过限位板(8)限位在所述第二容纳空间(71)中，所述限位板(8)箍设在所述第四管段(204)上并且与所述下板(73)固定连接。
  20. 一种车辆，其特征在于，所述车辆包括根据权利要求1-19中任一项所述的下车体结构(100)。
PCT/CN2023/105059 2022-11-16 2023-06-30 下车体结构及车辆 WO2024103791A1 (zh)

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