Exhaust system and transportation device

Abstract

The exhaust system and the transportation device are applied to exhaust of the transportation device, the transportation device comprises a chassis, an engine, an intercooling pipe, a driving motor and a battery pack are arranged on the chassis according to set positions, the exhaust system comprises an exhaust pipeline, the trend of the exhaust pipeline is arranged along a set path, and the battery pack is arranged in the exhaust pipeline. The first position, the second position, the third position and the fourth position are provided with heat insulation structures corresponding to the outer side wall of the exhaust pipeline, and the heat insulation structures are opposite to the engine, the intercooling pipe, the driving motor and the battery pack correspondingly. The heat insulation cover is arranged on the exhaust pipeline and located on the portion, prone to being damaged by heat radiation, of the exhaust pipeline, a heat source can be effectively isolated, heat transfer is reduced, meanwhile, light weight is kept, and the fuel economy of the whole vehicle and the cruising ability in an electric mode are optimized.

Description

Technical Field

[0001] This application relates to the technical field of vehicle heat insulation, and more specifically, to an exhaust system and a transportation device. Background Art

[0002] The design process of range-extended electric vehicles is different from that of traditional gasoline vehicles. On the chassis of new energy vehicles, there are an engine, a generator, a drive motor, a battery pack, etc. arranged simultaneously, which results in limited space for chassis layout. At the same time, from the engine compartment components, front drive components, front subframe, battery pack assembly, fuel tank assembly to the rear drive components, rear subframe, and rear bumper, all need to meet performance requirements. As the key to regulating the temperature of the whole vehicle, the thermal management system of the vehicle involves the cooling and temperature control of key components such as batteries, motors, and electronic control units, protects sensitive components from high temperatures, extends the life of components, and ensures the reliability and performance of the vehicle under various environmental conditions.

[0003] The exhaust of the thermal management system is achieved through an exhaust pipe, and the exhaust pipe is installed on the vehicle chassis. Since there are an engine, a generator, a drive motor, a battery pack, etc. arranged on the chassis, the existing exhaust pipes are generally installed interspersed between the engine, the generator, the drive motor, or the battery pack. However, since the engine, the large motor, the drive motor, and the battery pack generate a large amount of heat during operation, it causes thermal radiation damage to the exhaust pipe, and in severe cases, it will affect the normal operation of the exhaust pipe. Summary of the Invention

[0004] In view of this, the purpose of the embodiments of this application is to provide an exhaust system and a transportation device to solve the technical problem that the exhaust pipe is easily damaged due to thermal radiation damage.

[0005] In a first aspect, the embodiments of this application provide an exhaust system for the exhaust of a transportation device. The transportation device includes a chassis, and an engine, an intercooler pipe, a drive motor, and a battery pack are arranged and installed on the chassis according to set positions. Among them, the exhaust system includes an exhaust pipe, and the path of the exhaust pipe is set along a set path. The set path is provided with a first position, a second position, a third position, and a fourth position, and the first position, the second position, the third position, and the fourth position respectively correspond to the installation positions of the engine, the intercooler pipe, the drive motor, and the battery pack one by one. Heat insulation structures are arranged on the outer side walls of the exhaust pipe corresponding to the first position, the second position, the third position, and the fourth position, and the heat insulation structures face the engine, the intercooler pipe, the drive motor, and the battery pack.

[0006] The above exhaust system, wherein the exhaust duct includes a first sub-duct, a second sub-duct, a third sub-duct, and a fourth sub-duct, and the first sub-duct, the second sub-duct, the third sub-duct, and the fourth sub-duct respectively correspond to the first position, the second position, the third position, and the fourth position in a one-to-one manner; the heat insulation structure includes a first heat insulation cover, a second heat insulation cover, a third heat insulation cover, and a fourth heat insulation cover. The first heat insulation cover is arranged on the outer side wall of the first sub-duct facing the engine, the second heat insulation cover is arranged on the outer side wall of the second sub-duct facing the intercooler pipe, the third heat insulation cover is arranged on the outer side wall of the third sub-duct facing the drive motor, and the fourth heat insulation cover is arranged on the outer side wall of the fourth sub-duct facing the battery pack.

[0007] The above exhaust system, wherein the first sub-duct is arranged around one side of the engine, and at least the first heat insulation cover is arranged on the side of the first sub-duct facing the engine.

[0008] The above exhaust system, wherein the first heat insulation cover includes a first profiling shell, and the shape of the inner side wall of the first profiling shell is the same as the shape of the outer side wall of the first sub-duct, so that the first profiling shell is sleeved on the outer peripheral side of the first sub-duct, and heat insulation cotton is arranged between the outer peripheral side of the first sub-duct and the inner peripheral side of the first profiling shell.

[0009] The above exhaust system, the first profiling shell includes a first profiling shell monomer and a second profiling shell monomer, the first profiling shell monomer and the second profiling shell monomer are arranged opposite to each other, a first connection flange is arranged at the edge of the first profiling shell monomer, a second connection flange is arranged at the edge of the second profiling shell monomer, the first connection flange and the second connection flange are arranged opposite to each other, and the first connection flange is docked with the second connection flange.

[0010] The above exhaust system, wherein the third sub-duct is located below the drive motor, the third heat insulation cover includes a third profiling shell, and the shape of the inner side wall of the third profiling shell is the same as the shape of the outer side wall of the top of the third sub-duct, so that the third profiling shell is buckled on the top of the third sub-duct, and the heat insulation cotton is arranged between the inner side of the third profiling shell and the outer side of the third sub-duct.

[0011] The above exhaust system, wherein the exhaust duct further includes a corrugated pipe, and two ends of the corrugated pipe are respectively connected to the third sub-duct and the fourth sub-duct.

[0012] The above exhaust system, wherein an intake flange is arranged at the intake end of the first sub-duct, a connection bracket is arranged on the second sub-duct, and a lifting lug is arranged on the fourth sub-duct.

[0013] The above exhaust system, wherein a gas interlayer is provided between the second heat shield and the second sub-pipeline, and a gas interlayer is provided between the fourth heat shield and the fourth sub-pipeline.

[0014] In a second aspect, an embodiment of the present application provides a transportation device, including a chassis, the chassis is arranged and installed with an engine, an intercooler pipe, a drive motor and a battery pack according to set positions, wherein the transportation device further includes the above exhaust system.

[0015] In the present application, a heat shield is provided on the exhaust pipe, and the heat shield is located at a part of the exhaust pipe vulnerable to heat radiation damage, which can effectively isolate the heat source, reduce heat transfer, and maintain light weight at the same time, so as to optimize the fuel economy of the whole vehicle and the endurance in the electric mode.

[0016] To make the above objects, features and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Brief Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 Shows an overall structure diagram of an exhaust system provided by an embodiment of the present application.

[0019] Figure 2 Shows a schematic position diagram of an exhaust system provided by an embodiment of the present application, an engine, an intercooler pipe, a drive motor and a battery pack;

[0020] Figure 3 Is a structure diagram of a first sub-pipeline of an exhaust system provided by an embodiment of the present application;

[0021] Figure 4 Is Figure 3 an exploded view of Brief Description of the Drawings

[0023] 1. Exhaust pipe; 11. First sub-pipe; 12. Second sub-pipe; 13. Third sub-pipe; 14. Fourth sub-pipe; 15. Bellows; 21. Engine; 22. Intercooler pipe; 23. Subframe; 24. Battery pack; 25. Propeller shaft; 26. Drive motor; 3. First heat shield; 31. First profiled shell unit; 32. Second profiled shell unit; 4. Second heat shield; 5. Third heat shield; 6. Fourth heat shield; 71. Intake flange; 72. Connection bracket; 73. Lifting lug; 81. First connection flange; 82. Second connection flange; 9. Rib. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only a part rather than all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0025] In vehicle design, especially in the design of range-extended vehicles, the thermal management of the whole vehicle is a key link because it involves the cooling and temperature control of key components such as batteries, motors and electronic control units. As a part of thermal management, heat shields are used to protect sensitive components from high temperatures, extend the life of components, and ensure the reliability and performance of the vehicle under various environmental conditions. By setting heat shields on the exhaust pipe in the present application, the heat source can be effectively isolated, heat transfer can be reduced, and at the same time, lightweight can be maintained to optimize the fuel economy of the whole vehicle and the cruising range in the electric mode.

[0026] As Figures 1 to 4As shown in the figure, an exhaust system according to an embodiment of the present application is applied to the exhaust of a transportation device. The transportation device includes a chassis, and the engine 21, the intercooler pipe 22, the drive motor 26, and the battery pack 24 are arranged and installed on the chassis according to set positions. The exhaust system includes an exhaust pipe 1, and the direction of the exhaust pipe 1 is set along a set path. The set path is provided with a first position, a second position, a third position, and a fourth position, and the first position, the second position, the third position, and the fourth position respectively correspond to the positions of the engine 21, the intercooler pipe 22, the drive motor 26, and the battery pack 24 one by one. Heat insulation structures are provided on the outer side walls of the exhaust pipe 1 corresponding to the first position, the second position, the third position, and the fourth position, and the heat insulation structures face the engine 21, the intercooler pipe 22, the drive motor 26, and the battery pack 24.

[0027] The chassis of a new energy vehicle is different from that of an oil vehicle. The chassis of a new energy vehicle is arranged with an engine, a generator, a drive motor, and a battery pack, etc. Due to the limited layout space of the whole vehicle's exhaust system and considering the risk of heat damage, the routing of the exhaust system pipeline needs to avoid the gaps of surrounding components. From the engine compartment components, front drive components, front subframe, battery pack assembly, fuel tank assembly, to the rear drive components, rear subframe, and rear bumper, all need to meet performance requirements. As a key performance goal of the whole vehicle, thermal management needs to protect traditional power, the engine 21, new energy devices, the generator, the drive motor 26, the battery, etc. Due to the limited space gap, in order to meet the thermal management temperature field requirements, the heat insulation cover system needs different forms to achieve the heat insulation effect.

[0028] As Figure 1 and Figure 2 As shown in the figure, the exhaust pipe 1 of the exhaust system is arranged on the chassis, and the engine 21, the intercooler pipe 22, the subframe 23, and the battery pack 24 are arranged on the chassis along set positions. Due to the limited space of the chassis, when the exhaust pipe 1 is arranged on the chassis, the bending direction of the exhaust pipe 1 is changed to avoid the engine 21, the intercooler pipe 22, the subframe 23, and the battery pack 24.

[0029] As Figure 1 As shown in the figure, the part of the engine 21 opposite to the exhaust pipe 1 is the first position. The first position is a continuously extending line segment, corresponding to the extension direction of the first sub-pipe 11. The first sub-pipe 11 is arranged around one side of the engine 21, thus forming a bent pipe with a bending direction towards the engine 21. Since the engine 21 generates heat during operation, in order to prevent the heat generated by the engine 21 from damaging the exhaust pipe 1, the first heat insulation cover 3 is provided on at least the outer side wall of the first sub-pipe 11 facing the engine 21, thereby protecting the exhaust pipe 1 from being damaged.

[0030] Similarly, as Figure 2As shown, the part of the intercooling pipe 22 opposite to the exhaust pipe 1 is the second position, and the second position is a continuously extending line segment corresponding to the extending direction of the second sub-pipe 12. The second sub-pipe 12 is arranged around one side of the intercooling pipe 22, thus forming an elbow with a bending direction away from the intercooling pipe 22. The second sub-pipe 12 is at least provided with a second heat insulation cover 4 on the outer side wall facing the intercooling pipe 22, so as to reduce the risk of heat damage of the intercooling pipe 22 to the second sub-pipe 12.

[0031] As Figure 2 shown, the part of the subframe 23 opposite to the exhaust pipe 1 is the third position, and the third position is a continuously extending line segment corresponding to the extending direction of the third sub-pipe 13. A transmission shaft 25 and a driving motor 26 are arranged on the subframe 23, and the transmission shaft 25 and the driving motor 26 are opposite to the third position. The third sub-pipe 13 is located below the subframe 23, the transmission shaft 25 and the driving motor 26, and a third heat insulation cover 5 is arranged on the outer side wall of the top end of the third sub-pipe 13, so as to reduce the risk of heat damage of the driving motor 26 to the third sub-pipe 13.

[0032] As Figure 2 shown, the part of the battery pack 24 opposite to the exhaust pipe 1 is the fourth position, and the fourth position is a continuously extending line segment corresponding to the extending direction of the fourth sub-pipe 14. The fourth sub-pipe 14 is arranged around one side of the battery pack 24, thus forming an elbow with a bending direction away from the battery pack 24, and the fourth sub-pipe 14 is at least provided with a fourth heat insulation cover 6 on the outer side wall facing the battery pack 24.

[0033] In the exhaust system according to the embodiment of the present application, the first heat insulation cover 3 includes a first profiling shell 31, and the shape of the inner side wall of the first profiling shell 31 is the same as the shape of the outer side wall of the first sub-pipe 11, so that the first profiling shell 31 is sleeved on the outer peripheral side of the first sub-pipe 11, and heat insulation cotton is arranged between the outer peripheral side of the first sub-pipe 11 and the inner peripheral side of the first profiling shell 31.

[0034] As Figure 3 shown, the first heat insulation cover 3 includes a first profiling shell, and the shape of the first profiling shell is the same as the shape of the first sub-pipe 11, and both are elbow-shaped, so that the first profiling shell can be installed on the first sub-pipe 11. The first profiling shell may include a first profiling shell monomer 31 and a second profiling shell monomer 32, the first profiling shell monomer 31 and the second profiling shell monomer 32 are arranged up and down opposite to each other, and the two can be connected by connection methods such as docking, bonding, edge welding, hemming, etc. For example, a first connection flange 81 is arranged at the edge of the first profiling shell monomer 31, and a second connection flange 82 is arranged at the edge of the second profiling shell monomer 32, so as to connect the first connection flange 81 and the second connection flange 82 by bolts, thereby realizing the docking between the first profiling shell monomer 31 and the second profiling shell monomer 32.

[0035] Furthermore, the inner diameter of the first heat insulation cover 4 is 5 - 8 mm larger than the outer diameter of the first sub-pipeline 11, so that an air interlayer is formed between the two. Usually, the inside of the interlayer is air, thus forming an air interlayer. Heat insulation cotton is arranged inside the interlayer, so as to fully isolate heat and meet the heat damage requirements. Similarly, the setting that the inner diameter of the second heat insulation cover 4 is larger than the outer diameter of the second sub-pipeline 12, the setting that the inner diameter of the third heat insulation cover 5 is larger than the outer diameter of the third sub-pipeline 13, and the setting that the inner diameter of the fourth heat insulation cover 6 is larger than the outer diameter of the fourth sub-pipeline 14 are similar to the setting of the first heat insulation cover 3 and the first sub-pipeline 11, so as to meet the heat damage requirements at different positions of the exhaust pipeline 1.

[0036] As Figure 3 and Figure 4 shown, considering that the engine 21 and the drive motor 26 generate more heat than the intercooler pipe 22 and the battery pack 24, heat insulation cotton is respectively arranged at the first sub-pipeline 11 and the third sub-pipeline 13, that is, heat insulation cotton is arranged between the outer side wall of the first sub-pipeline 11 and the inner side wall of the first profiling shell, and heat insulation cotton is arranged between the outer side wall of the third sub-pipeline 13 and the inner side wall of the third profiling shell, which strengthens the heat isolation effect. Only an air interlayer is needed at the second sub-pipeline 12 and the fourth sub-pipeline 14 to meet the heat isolation requirements, thus saving the heat insulation cotton material and reducing the material cost.

[0037] As a preferred implementation manner, the heat insulation cotton can be made of hard materials with a relatively large density, such as asbestos and quartz, etc., which have good heat insulation effects. As Figure 3 and 4 shown, the outer peripheral walls at both ends of the first profiling shell monomer 31 are recessed inward to form ribs 9, and the first profiling shell monomer 31 is sealed and buckled on the first sub-pipeline 11 through the two ribs 9, and then the heat insulation cotton is sealed at the first sub-pipeline 11. Similarly, the outer peripheral walls at both ends of the third profiling shell are recessed inward to form ribs 9, and the third profiling shell is sealed on the third sub-pipeline 13 through the two ribs 9, so as to seal the heat insulation cotton at the third sub-pipeline 13, avoid the leakage of heat insulation cotton debris at the first sub-pipeline 11 and the third sub-pipeline 13, or avoid the entry of external air into the gap between the first sub-pipeline 11 and the first heat insulation cover 3 or between the third sub-pipeline 13 and the third heat insulation cover 5, resulting in the accelerated aging of the heat insulation cotton.

[0038] The exhaust system according to the embodiment of the present application, the exhaust pipe 1 further includes a corrugated pipe 15, and both ends of the corrugated pipe 15 are respectively connected to the third sub-pipe 13 and the fourth sub-pipe 14. An intake flange 71 is provided at the intake end of the first sub-pipe 11, a connection bracket 72 is provided on the second sub-pipe 12, and a lifting lug 73 is provided on the fourth sub-pipe 14. The corrugated pipe 15 can be used as a compensation element. When the third sub-pipe 13 and the fourth sub-pipe 14 expand due to temperature difference, the corrugated pipe 15 elongates to play a compensation role. The intake flange 71 is provided at the intake port of the first sub-pipe 11, and the intake flange 71 is connected to the exhaust source of the vehicle, so as to discharge exhaust gas through the exhaust pipe 1. The connection bracket 72 and the lifting lug 73 are used to connect the exhaust pipe 1 to the chassis.

[0039] Based on the same concept, a transport device corresponding to the exhaust system is further provided in the embodiment of the present application. Since the principle of solving problems by the transport device in the embodiment of the present application is similar to that of the exhaust system in the embodiment of the present application, the implementation of the transport device can refer to the implementation of the exhaust system, and the repeated parts will not be described again.

[0040] As Figure 2 shown, a transport device according to an embodiment of the present application includes a chassis and an exhaust system. The chassis is arranged according to a set position to install an engine 21, an intercooler pipe 22, a subframe 23, a drive shaft 25, a drive motor 26, and a battery pack 24. When the exhaust pipe 1 is arranged on the chassis, the exhaust pipe 1 bends to avoid the engine 21, the intercooler pipe 22, the subframe 23, the subframe 23, the drive shaft 25, and the battery pack 24. At the same time, the exhaust pipe 1 is provided with a heat insulation structure to play a role in isolating heat, meeting the requirements of vehicle design for heat damage.

[0041] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. The components of the embodiments of the present application described and illustrated herein can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

Claims

1. An exhaust system for exhausting a transport device, wherein the transport device comprises a chassis, wherein an engine, an intercooler pipe, a drive motor and a battery pack are arranged and installed on the chassis according to a set position, and wherein: The exhaust system includes an exhaust duct, and the exhaust duct is arranged along a set path. The set path is provided with a first position, a second position, a third position and a fourth position, and the first position, the second position, the third position and the fourth position respectively correspond to the setting positions of the engine, the intercooler pipe, the drive motor and the battery pack, and the first position, the second position, the third position and the fourth position correspond to the outer side wall of the exhaust duct provided with a heat insulation structure, and the heat insulation structure is respectively opposite to the engine, the intercooler pipe, the drive motor and the battery pack.

2. The exhaust system according to claim 1, characterized in that The exhaust duct includes a first sub-duct, a second sub-duct, a third sub-duct and a fourth sub-duct, and the first sub-duct, the second sub-duct, the third sub-duct and the fourth sub-duct correspond to the first position, the second position, the third position and the fourth position respectively; the heat insulation structure includes a first heat insulation cover, a second heat insulation cover, a third heat insulation cover and a fourth heat insulation cover, the first heat insulation cover is arranged on the outer side wall of the first sub-duct facing the engine, the second heat insulation cover is arranged on the outer side wall of the second sub-duct facing the intercooler pipe, the third heat insulation cover is arranged on the outer side wall of the third sub-duct facing the drive motor, and the fourth heat insulation cover is arranged on the outer side wall of the fourth sub-duct facing the battery pack.

3. The exhaust system according to claim 2, characterized in that: The first sub-duct is arranged around one side of the engine, and at least the first heat insulation cover is arranged on the side of the first sub-duct facing the engine.

4. The exhaust system according to claim 3, characterized in that The first heat insulation cover includes a first contoured shell, the shape of the inner wall of the first contoured shell is the same as the shape of the outer wall of the first sub-pipe, so that the first contoured shell is sleeved on the outer circumference of the first sub-pipe, and heat insulation cotton is arranged between the outer circumference of the first sub-pipe and the inner circumference of the first contoured shell.

5. The exhaust system according to claim 4, characterized in that The first contoured shell includes a first contoured shell monomer and a second contoured shell monomer, the first contoured shell monomer is arranged opposite to the second contoured shell monomer, a first connecting flange is arranged on the edge of the first contoured shell monomer, a second connecting flange is arranged on the edge of the second contoured shell monomer, the first connecting flange is arranged opposite to the second connecting flange, and the first connecting flange is butted against the second connecting flange.

6. The exhaust system according to claim 4, characterized in that The third sub-pipe is located below the driving motor, and the third heat insulation cover includes a third contoured shell. The shape of the inner wall of the third contoured shell is the same as the shape of the outer wall of the top of the third sub-pipe, so that the third contoured shell is buckled on the top of the third sub-pipe, and the heat insulation cotton is arranged between the inner side of the third contoured shell and the outer side of the third sub-pipe.

7. The exhaust system according to claim 2, characterized in that The exhaust pipe further includes a bellows, and two ends of the bellows are respectively connected to the third sub-pipeline and the fourth sub-pipeline.

8. The exhaust system according to claim 2, characterized in that: An air inlet flange is arranged at the air inlet end of the first sub-pipeline, a connecting bracket is arranged on the second sub-pipeline, and a lifting lug is arranged on the fourth sub-pipeline.

9. The exhaust system according to claim 6, characterized in that A gas interlayer is provided between the second heat insulation cover and the second sub-pipeline, and the gas interlayer is provided between the fourth heat insulation cover and the fourth sub-pipeline.

10. A transport device, comprising a chassis, wherein an engine, an intercooler, a drive motor and a battery pack are arranged and installed according to a set position, characterized in that: The transport device further comprises an exhaust system as claimed in any one of claims 1 to 9.

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