Exhaust system and vehicle

Abstract

An exhaust system (100) provided in a vehicle (1000). The vehicle (1000) comprises a battery pack (200). The exhaust system (100) comprises an exhaust pipe (10). One end of the exhaust pipe (10) forms an exhaust tail opening (11). The exhaust tail opening (11) is configured to face at least one of the two sides in the width direction of the vehicle or face the ground, so that the battery pack (200) and the exhaust system (100) can be spaced apart in the length direction of the vehicle, thereby reducing the risk of damage to the battery pack caused by overheating of the exhaust system, improving the overall safety of the vehicle, and improving the performance and service life of the battery pack. Further disclosed is a vehicle comprising the exhaust system.

Description

Exhaust system and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411049099.4, filed on July 31, 2024, entitled “Exhaust System and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle exhaust technology, and more particularly to an exhaust system and a vehicle. Background Technology

[0003] In related technologies, in the traditional exhaust system layout, the exhaust pipe extends towards the rear of the vehicle and passes next to the power battery pack. The exhaust pipe will generate high-temperature heat radiation, which poses a safety hazard. Technical issues

[0004] Therefore, there is a risk that the exhaust system may overheat and damage the battery pack. Technical solutions

[0005] This application provides an exhaust system and vehicle that improve safety.

[0006] In a first aspect, embodiments of this application provide an exhaust system disposed in a vehicle, the vehicle including a battery pack, the exhaust system including an exhaust pipe, one end of the exhaust pipe forming an exhaust tail outlet, the exhaust tail outlet being disposed on at least one side facing the two sides in the width direction of the vehicle or facing the ground.

[0007] Secondly, embodiments of this application also provide a vehicle, the vehicle including a battery pack and the exhaust system described in the first aspect, the exhaust system and the battery pack being spaced apart along the length direction of the vehicle. Beneficial effects

[0008] The exhaust system and vehicle provided in this application, by placing the exhaust outlet of the exhaust system on at least one side or the bottom of the vehicle body, facilitate the spacing of the battery pack and exhaust system along the length of the vehicle. This reduces the risk of battery pack damage due to overheating of the exhaust system, improving the overall safety of the vehicle. Simultaneously, exhaust gases can diffuse into the air more quickly, reducing heat radiation to surrounding components and preventing the battery pack from being directly affected by high-temperature exhaust gases. This lowers the battery pack's operating temperature, improves its performance and lifespan, and also enhances the vehicle's safety and reliability. Attached Figure Description

[0009] Figure 1 is a schematic diagram of vehicle space division in one embodiment of this application;

[0010] Figure 2 is a schematic diagram of the exhaust path of the engine and exhaust system in one embodiment of this application;

[0011] Figure 3 is a schematic diagram of the exhaust system in the first embodiment of this application;

[0012] Figure 4 is a schematic diagram of the exhaust system in the second embodiment of this application;

[0013] Figure 5 is a schematic diagram of the exhaust system in the third embodiment of this application;

[0014] Figure 6 is a schematic diagram of the exhaust system in the fourth embodiment of this application;

[0015] Figure 7 is a schematic diagram of the exhaust system in the fifth embodiment of this application;

[0016] Figure 8 is a schematic diagram of the area division of the exhaust tail port in the first embodiment of this application.

[0017] Reference numerals: 1000-Vehicle; 100-Exhaust system; 10-Exhaust pipe; 11-Exhaust tailpipe; 12-First stage; 13-Second stage; 20-Catalyst; 30-Muffler structure; 40-Bellboard; 50-Heat insulation layer; 200-Battery pack; 301-Engine; 302-Front bumper; 303-Front wheel; 304-Turbocharger; 305-High temperature resistant component; 306-Hanger rod; 307-Fan; A-First space; a-First area; b-Second area; c-Third area; B-Second space.

[0018] Implementation methods of this application

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] This application provides a vehicle, as shown in Figure 1. The vehicle 1000 includes an exhaust system 100 and a battery pack 200, which are spaced apart along the length of the vehicle 1000. By separating the exhaust system and the battery pack 200, the battery pack 200 has more installation space and a more complete installation area. This means the battery pack 200 can be designed to be larger, thus accommodating more battery cells and increasing the pure electric range of the vehicle 1000. Separating the high-temperature area of ​​the exhaust system from the battery pack 200 reduces the risk of damage to the battery pack 200 due to overheating of the exhaust system. This contributes to improving the overall safety of the vehicle 1000.

[0022] Understandably, the vehicle 1000 is also equipped with necessary or non-necessary components commonly used in the art, such as the body, engine 301, and front bumper 302, which together constitute the complete structure of the vehicle 1000. Since this application primarily focuses on the optimized layout of the battery pack 200 and the integrated exhaust system, the specific structure and function of these conventional components will not be described in detail here.

[0023] In the overall layout of Vehicle 1000, we can divide the entire vehicle into a first space A and a second space B along its length. The engine 301 assembly and integrated exhaust system are rationally arranged in the first space A, while the battery pack 200 is placed in the second space B. Compared with the traditional exhaust system that needs to pass through the second space B to exhaust, this design significantly reduces the occupancy of the second space B, allowing the battery pack 200 to have a larger installation area, thereby achieving higher energy density and a longer driving range.

[0024] The first space A can be located in front of the second space B, meaning the engine 301 assembly and exhaust system 100 are located on the side where the front of the vehicle 1000 is situated. Alternatively, the first space A can be located behind the second space B, meaning the engine 301 is placed at the rear of the vehicle 1000. This rear-mounted engine 301 design allows for a more balanced center of gravity in the vehicle 1000, improving its handling performance. Furthermore, this rear-mounted engine layout prevents the exhaust system 100 from passing through the second area B, providing more installation space for the power battery and thus increasing battery capacity and driving range.

[0025] The power battery can be installed at the bottom or middle of the vehicle body to ensure the vehicle's stability and safety. In some models, the power battery can also be installed under the chassis, which can effectively utilize the chassis space, lower the overall center of gravity of the vehicle, and improve driving stability.

[0026] The following explanation will be based on the example of the first space A being located in front of the second space B.

[0027] Please refer to Figures 1 to 3. The exhaust system 100 includes an exhaust pipe 10, one end of which forms an exhaust outlet 11. The exhaust pipe 10 is used to exhaust the exhaust gas generated by the engine 301 from inside the vehicle 1000 and discharge it to the external environment through the exhaust outlet 11. The exhaust direction of the exhaust outlet 11 typically has two options: one is to be oriented towards at least one side of the vehicle 1000 in the width direction, as shown in Figures 3 to 6; the other is to be oriented towards the ground, as shown in Figure 7. Both designs help to prevent the high-temperature exhaust gas generated by the engine 301 from directly radiating heat to the battery pack 200.

[0028] By placing the exhaust outlet 11 on at least one side or bottom of the vehicle body, exhaust gases can diffuse into the air more quickly, reducing heat radiation to components around the vehicle 1000. This avoids direct exposure of the battery pack 200 to high-temperature exhaust gases, thereby lowering its operating temperature. This facilitates thermal management of the battery pack 200, improves its performance and lifespan, and enhances the safety and reliability of the vehicle 1000.

[0029] As you can understand, please refer again to Figure 2. The engine 301 assembly has a turbocharger 304 for discharging the exhaust gases from the engine 301. The exhaust system 100 includes a catalytic converter 20 and a muffler structure 30. The turbocharger 304, catalytic converter 20, and muffler structure 30 are connected sequentially via a pipe structure. In this application, the pipe on the outlet side of the muffler structure 30 is defined as the exhaust pipe 10. The exhaust gases from the engine 301 first pass through the turbocharger 304, are compressed, enter the muffler structure 30, and are discharged through the exhaust pipe 10. In the catalytic converter 20, harmful substances in the exhaust gases are converted into harmless substances. Then, the treated exhaust gases enter the muffler structure 30, where noise is reduced, and finally, they are discharged into the atmosphere through the exhaust pipe 10. This ensures that the emissions of the engine 301 meet relevant environmental protection standards, reducing pollution and other impacts on the environment. The engine 301 and the muffler structure 30 can be located in the same vehicle compartment, with the exhaust pipe 10 extending from the compartment. The engine 301 and the noise reduction structure 30 can be installed in the engine compartment. The engine compartment is usually equipped with sound insulation materials, such as sound insulation cotton and sound insulation panels. These materials can further absorb and isolate the noise generated when the engine 301 is working, and work together with the noise reduction structure 30 to provide a quieter riding environment.

[0030] The catalytic converter 20 is used to convert harmful substances emitted by the engine 301. When exhaust gas passes through the catalytic converter 20, harmful substances (such as carbon monoxide, nitrogen oxides, and hydrocarbons) undergo oxidation-reduction reactions under the action of the catalyst, converting them into harmless carbon dioxide, nitrogen, and water vapor, thus reducing environmental pollution. The catalytic converter 20 can be a three-way catalytic converter 20, an oxidation catalytic converter 20, a wall-flow particulate filter, a selective catalytic reduction converter, or an ammonia oxidation catalytic converter 20, etc. The silencing structure 30 is used to reduce exhaust noise. Through the sound-insulating materials and special structural design inside the silencing structure 30, sound waves are absorbed and reflected, thereby reducing exhaust noise. The design of the silencing structure 30 needs to consider reducing noise without affecting the exhaust gas emission efficiency.

[0031] Referring to Figure 3, the exhaust pipe 10 may include a first section 12 and a second section 13 that are connected. The first section 12 is used to communicate with the outlet of the muffler structure 30, and the end of the second section 13 away from the first section 12 forms an exhaust tail outlet 11. The second section 13 is used to adjust the orientation of the exhaust tail outlet 11 to prevent it from facing the battery pack 200; the end of the second section 13 away from the first section 12 forms the exhaust tail outlet 11. The second section 13 of the exhaust pipe 10 is responsible for further guiding the flow of exhaust gas, and the second section 13 also serves to adjust the orientation of the exhaust tail outlet 11.

[0032] When designing the second section 13 exhaust pipe 10, an adjustable design can be considered, such as a curved pipe section, a rotatable joint, or a telescopic structure, to adjust the orientation of the exhaust outlet 11 according to actual conditions. In this way, the exhaust outlet 11 can be kept away from the battery pack 200, reducing the thermal impact on the battery pack 200.

[0033] The exhaust pipe 10 can be a one-piece structure, with the exhaust pipe 10 bent to form the first section 12 and the second section 13. The one-piece exhaust pipe 10 design makes the entire exhaust system seamless and connection-free from the first section 12 to the second section 13, providing better sealing performance and preventing exhaust gas leakage.

[0034] The first segment 12 and the second segment 13 can also be independent components, connected by a bellows 40. The bellows 40 connection allows for a certain degree of expansion, contraction, and vibration, enabling adjustments to the angle and distance between the first segment 12 and the second segment 13 during installation. Furthermore, the bellows 40 connection absorbs stress and vibration generated by the exhaust system 100 during operation, thereby reducing exhaust noise and improving the stability and durability of the entire system.

[0035] Regardless of whether the exhaust pipe 10 adopts an integrated or separate structure, it can be mounted to the vehicle body 1000 via a hanger rod 306. The hanger rod 306 can be made of rubber and can both secure the exhaust pipe 10 and absorb vibrations from the engine 301, preventing resonance between the vehicle body and the engine 301. Connecting the exhaust pipe 10 to the vehicle body via the hanger rod 306 allows for a flexible connection of the entire exhaust system, thus reducing vibration and noise. Simultaneously, this connection method facilitates the installation and maintenance of the exhaust system, extending the service life of the exhaust system 100.

[0036] In other embodiments, the first segment 12 and the second segment 13 can also be connected by flanges, welding, clamps, threads, etc. The choice of connection method can take into account factors such as the requirements of the exhaust system, pipe material, installation environment, and ease of maintenance and replacement. This application does not limit this.

[0037] With the exhaust outlet 11 facing either side of the vehicle 1000's width direction, as shown in Figures 3 to 6, the second section 13 forms an angle between itself and the vehicle 1000's length direction ranging from [90° to 120°]. When the angle is 90°, the exhaust pipe 10 of the second section 13 will be perpendicular to the vehicle 1000's length direction, meaning the exhaust outlet 11 faces directly towards the side of the vehicle 1000. This design ensures direct exhaust, reduces interference with other components of the vehicle 1000, and helps reduce exhaust noise. When the angle increases to 120°, the exhaust pipe 10 of the second section 13 will have a larger tilt angle relative to the vehicle 1000's length direction. This design may help better guide exhaust flow and avoid contact with the bottom of the vehicle 1000 or other components. Simultaneously, a larger angle also provides more layout flexibility for the exhaust system to accommodate different chassis designs and engine 301 positions.

[0038] It should be noted that the angle between the second segment 13 and the length direction of the vehicle 1000 should not be too large. For example, when the angle between the second segment 13 and the length direction of the vehicle 1000 is 135°, the dimensions of the exhaust pipe 10 along the length direction of the vehicle 1000 will tend to be consistent with the dimensions along the width direction of the vehicle 1000. This will increase the space occupied by the exhaust system along the length direction of the vehicle 1000, which may affect the installation space of other components (such as the battery pack 200). As the angle further increases, the space occupied by the exhaust system at the bottom of the vehicle 1000 will also increase. This may not only affect the installation position of the battery pack 200, but also have an adverse effect on the ground clearance, passability, and chassis flatness of the vehicle 1000.

[0039] The second segment 13 does not have to be a straight pipe structure. In this case, this application does not require that the angle formed by the entire second segment 13 with the length direction of the vehicle 1000 or with the ground be within the aforementioned angle range. Rather, it requires that the angle formed by the straight portion where the exhaust tail outlet 11 is located with the length direction of the vehicle 1000 or with the ground be within the aforementioned angle range. Other parts of the second segment 13 can be bent or flexed according to the position of other components or noise reduction requirements. For example, the end of the second segment 13 near the first segment 12 can be perpendicular to the length direction of the vehicle 1000. This can effectively control the size of the second segment 13 in the length direction of the vehicle 1000 and avoid excessive impact on the installation space of other components (such as the battery pack 200). The portion of the second segment 13 near the exhaust tail outlet 11 can be tilted backward to prevent air from flowing back into the exhaust pipe 10 during vehicle 1000 operation, which helps improve the performance and efficiency of the exhaust system 100.

[0040] With the exhaust outlet 11 facing the ground, as shown in Figure 7, the angle between the second section 13 and the ground ranges from [45° to 90°]. When the angle is 45°, the second section 13 of the exhaust pipe 10 is tilted downwards and backwards, forming a 45° angle with the ground. This design gives the exhaust gas a certain backward and downward momentum during emission, helping to reduce the direct impact of exhaust gas on the ground and noise pollution. At the same time, it helps the exhaust gas to diffuse better into the air, reducing heat radiation to the ground. When the angle between the second section 13 of the exhaust pipe 10 and the ground is 90°, that is, the exhaust outlet 11 is perpendicular to the ground. In this case, the exhaust gas will be emitted directly downwards. However, in practical applications, due to the airflow and ground effect generated when the vehicle 1000 is moving, the exhaust gas may not be emitted completely vertically downwards, but will diffuse slightly backwards or to the sides. But overall, this design still achieves the goal of preventing the exhaust gas from directly impacting the ground, reducing the impact of noise and heat radiation.

[0041] On the one hand, when the angle between the second exhaust pipe 10 (section 13) and the ground is less than 45°, the exhaust pipe 10 will tilt towards the battery pack 200. This may cause the exhaust gas to directly radiate heat to the battery pack 200, affecting its performance and safety. To reduce this heat radiation, the vertical length of the second exhaust pipe 10 (section 13) needs to be increased, but this may result in an insufficient gap between the exhaust outlet 11 and the ground, affecting the vehicle 1000's passability and exhaust efficiency. On the other hand, when the angle between the second exhaust pipe 10 (section 13) and the ground is greater than 90°, the exhaust pipe 10 will tilt towards the front of the vehicle. In this case, during vehicle 1000 operation, especially at high speeds or in strong winds, air may backflow into the exhaust pipe 10, affecting the normal operation of the exhaust system and potentially damaging the engine 301.

[0042] Therefore, when designing the exhaust system, it is necessary to ensure that the angle between the second exhaust pipe 10 (section 13) and the ground is within the range of [45°, 90°], and to make minor adjustments based on factors such as the specific vehicle model, chassis layout, and battery pack 200 location. This ensures smooth exhaust gas emission, reduces environmental impact, and avoids unnecessary damage to other components of the vehicle 1000.

[0043] The second section 13 may not be a straight pipe structure. In this case, this application does not require that the angle formed by the second section 13 as a whole with the ground or the angle formed with the ground be within the above-mentioned angle range. Rather, the angle formed by the straight part where the exhaust tail outlet 11 is located with the length direction of the vehicle 1000 or the angle formed with the ground be within the above-mentioned angle range. Other parts of the second section 13 may be bent or folded according to the position of other components or noise reduction requirements.

[0044] Referring to Figure 8, the first space A can be divided into three regions using the front wheel 303 as the boundary. The first region a is located between the rear boundary of the front wheel 303 and the battery pack 200. This region is usually the central part of the bottom of the vehicle 1000, close to the power system and battery pack 200 of the vehicle 1000. The second region b is located on the side of the front wheel 303 away from the battery pack 200. This usually refers to the two sides of the front of the vehicle 1000 and may include the engine compartment or other important components of the vehicle 1000. The third region c is located between the two front wheels 303. This region is the center of the front of the vehicle 1000 and is usually used to house key components such as the engine 301 and the transmission system.

[0045] The exhaust outlet 11 can be located in any of the three areas mentioned above. The choice of area depends on the specific design, performance requirements, and spatial layout of the vehicle 1000. If the exhaust outlet 11 is located in the first area a, as shown in Figures 3 and 4, it may be closer to the center of the vehicle 1000, which is beneficial for reducing exhaust noise interference to passengers, but may also have a certain thermal impact on the battery pack 200. If the exhaust outlet 11 is located in the second area b, as shown in Figures 5 and 6, it may be closer to the edge of the vehicle 1000, which helps with heat dissipation and reduces the impact of heat on the interior environment, but may require a longer exhaust pipe 10. If the exhaust outlet 11 is located in the third area c, as shown in Figure 7, it may be closer to the engine 301, which is beneficial for reducing exhaust resistance and improving exhaust efficiency, but may also increase the thermal load on the front of the vehicle 1000.

[0046] It should be noted that although the position of the exhaust outlet 11 is fixed, the path of the exhaust pipe 10 can be flexibly designed to take into account factors such as exhaust efficiency, noise control, thermal management, and interference with other components. The exhaust pipe 10 can start from the third region c (between the two front wheels 303) and extend towards the first region a (near the battery pack 200) or the second region b (both sides of the vehicle 1000).

[0047] When designing the exhaust system 100, the positions of the exhaust outlet 11 and exhaust pipe 10 need to be carefully considered to ensure that the exhaust outlet 11 and exhaust pipe 10 will not negatively affect the performance, safety, or comfort of the vehicle 1000. In particular, when the exhaust outlet 11 is close to the battery pack 200 or other components, special attention needs to be paid to thermal management to prevent overheating from damaging the vehicle 1000.

[0048] For example, referring again to Figure 3, the portion of the vehicle 1000 at the outlet side of the exhaust tailpipe 11 may be equipped with a high-temperature resistant component 305. For instance, when the exhaust tailpipe 11 is located in the second region b, the exhaust pipe 10 is fixed to the front bumper 302 of the vehicle 1000. The front bumper 302 is equipped with a high-temperature resistant component 305 near the exhaust tailpipe 11, particularly at the outlet side, to prevent the high-temperature airflow from the exhaust tailpipe 11 from causing heat damage to the front bumper 302.

[0049] Please refer to Figure 5 again. High-temperature resistant component 305 has excellent thermal insulation properties. It is a component with high-temperature resistance (refractory temperature greater than 1000℃), and at high temperatures, it resists corrosion from furnace gases. It can effectively block the high-temperature airflow from the exhaust port 11, reducing thermal damage to other parts of the vehicle 1000 (such as the front bumper 302). The coefficient of thermal expansion of high-temperature resistant component 305 should be similar to that of other parts of the vehicle 1000 (such as the front bumper 302) to avoid thermal stress and deformation caused by temperature changes. High-temperature resistant component 305 should have sufficient strength and toughness to withstand vibrations and impacts during vehicle 1000 operation. High-temperature resistant component 305 can be made of alloy materials such as nickel-based alloys, cobalt-based alloys, iron-based alloys, molybdenum alloys (such as molybdenum-copper alloys and molybdenum-zirconium alloys), and tungsten alloys (such as tungsten-titanium alloys and tungsten-copper alloys), or ceramic materials such as alumina ceramics, silicon nitride ceramics, and aluminum nitride ceramics.

[0050] The outer surface of the exhaust pipe 10 can be covered with a heat insulation layer 50 to reduce the transfer of heat to the surrounding environment, thereby protecting surrounding components (such as the battery pack 200 and the front compartment) and the interior environment from heat radiation damage, and improving the safety and reliability of the battery pack 200.

[0051] Since the exhaust pipe 10 is in direct contact with the high-temperature exhaust gas emitted by the engine 301, it must possess a certain degree of heat resistance. The exhaust pipe 10 also needs to withstand the vibrations and impacts generated by the engine 301, therefore it must have sufficient strength and rigidity to ensure its structural stability and safety. The exhaust pipe 10 can be made of stainless steel, aluminum alloy, or titanium alloy, among other materials. The selection of the heat insulation layer 50 needs to consider its heat insulation effect, high-temperature resistance, mechanical strength, and environmental friendliness. The heat insulation layer 50 can be made of materials such as Dike aluminum foil insulation rolls, thermal insulation paper, fiberglass boards, fiberglass mats, polyurethane foam boards, or micro / nano insulation boards.

[0052] In other embodiments, the exhaust pipe 10 can also be made of heat-insulating materials, such as ceramic fiber or aluminum silicate fiber. It should be noted that when using heat-insulating materials for the exhaust pipe 10, the mechanical strength of the exhaust pipe 10 must be guaranteed.

[0053] Referring to Figure 7, the vehicle 1000 also includes a fan 307, with its outlet facing the exhaust pipe 10. It should be noted that the outlet direction of the fan 307 cannot be opposite to the exhaust direction of the exhaust outlet 11. The airflow generated by the fan 307 can blow towards the exhaust gas discharged from the exhaust outlet 11, thereby helping to reduce the temperature of the exhaust gas. This helps reduce the impact of heat radiation on the front compartment components. When the exhaust outlet 11 is tilted towards the ground, since the distance between the exhaust outlet 11 and the ground is limited by the chassis height, the fan 307 can accelerate the diffusion of exhaust gas and reduce the accumulation of harmful substances.

[0054] Please refer to Figure 3. In the first embodiment of this application: the exhaust pipe 10 is fixed to the chassis or door sill structure, and the exhaust outlet 11 is located behind the left front wheel. In this case, the exhaust system 100 discharges exhaust gas from behind the left front tire and in front of the battery pack 200 to the atmosphere. The exhaust pipe 10 is covered with a heat insulation layer 50 to prevent high-temperature airflow and high-temperature heat radiation from causing heat damage to the battery pack 200. The first section 12 and the second section 13 of the exhaust pipe 10 are connected by a bellows 40, and the exhaust pipe 10 is connected to the vehicle body by a hanger rod 306 to achieve vibration filtering.

[0055] Referring to Figure 4, in the second embodiment of this application, the exhaust pipe 10 is fixed to the chassis or door sill structure, and the exhaust outlet 11 is located behind the right front wheel. In this case, the exhaust system 100 discharges exhaust gas from behind the right front tire and in front of the battery pack 200 to the atmosphere. The exhaust pipe 10 is covered with a heat insulation layer 50 to prevent high-temperature airflow and high-temperature heat radiation from causing heat damage to the battery pack 200. The first section 12 and the second section 13 of the exhaust pipe 10 are connected by a bellows 40, and the exhaust pipe 10 is connected to the vehicle body by a hanger rod 306 to achieve vibration filtering.

[0056] Referring to Figure 5, in the third embodiment of this application, the exhaust pipe 10 is fixed to the front bumper 302, and the exhaust outlet 11 is located in front of the left front wheel. In this case, the exhaust system 100 discharges exhaust gas from the left front tire, to the left side of the front bumper 302, to the atmosphere. A high-temperature resistant component 305 is installed on the front bumper 302 near the exhaust outlet 11 to prevent the high-temperature airflow from the exhaust outlet 11 from causing heat damage to the front bumper 302. At the same time, the outer surface of the exhaust pipe 10 is also covered with a heat insulation layer 50 to prevent the high-temperature airflow and high-temperature heat radiation from causing heat damage to the front bumper 302 and other components in the front compartment. The first section 12 and the second section 13 of the exhaust pipe 10 are connected by a bellows 40, and the exhaust pipe 10 is connected to the vehicle body by a hanger rod 306 to achieve vibration filtering.

[0057] Referring to Figure 6, in the fourth embodiment of this application, the exhaust pipe 10 is fixed to the front bumper 302, and the exhaust outlet 11 is located in front of the right front wheel. In this case, the exhaust system 100 discharges exhaust gas from the right front tire, to the right side of the front bumper 302, into the atmosphere. A high-temperature resistant component 305 is installed on the front bumper 302 near the exhaust outlet 11 to prevent the high-temperature airflow from the exhaust outlet 11 from causing heat damage to the front bumper 302. At the same time, the outer surface of the exhaust pipe 10 is also covered with a heat insulation layer 50 to prevent the high-temperature airflow and high-temperature heat radiation from causing heat damage to the front bumper 302 and other components in the front compartment. The first section 12 and the second section 13 of the exhaust pipe 10 are connected by a bellows 40, and the exhaust pipe 10 is connected to the vehicle body by a hanger rod 306 to achieve vibration filtering.

[0058] In the first to fourth embodiments, the choice of whether the exhaust outlet 11 faces the left or right needs to be made in accordance with relevant regulations to ensure the safety of pedestrians and vehicles 1000. For example, in areas where the default rule of pedestrians walking on the right is followed, setting the exhaust outlet 11 to face the left can prevent exhaust fumes from blowing directly at pedestrians and reduce the potential impact of exhaust fumes on pedestrians.

[0059] Referring to Figure 7, in the fifth embodiment of this application, the exhaust pipe 10 is fixed to the chassis, and the exhaust tailpipe 11 is located between the two front wheels 303 and faces the ground. The exhaust system 100 discharges exhaust gas from the front compartment, below the powertrain. The exhaust pipe 10 is covered with a heat insulation layer 50 to prevent high-temperature heat radiation from causing heat damage to the front compartment components. In addition, a fan 307 can be installed on the front side of the exhaust pipe 10, with the air outlet of the fan 307 facing the exhaust pipe 10. The air outlet direction of the fan 307 does not conflict with the exhaust direction of the exhaust tailpipe 11, so the air from the electric fan 307 can be used to mix the air and cool it down, solving the problem of heat damage to the front compartment components.

[0060] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. An exhaust system provided to a vehicle, the vehicle including a battery pack, wherein, The exhaust system comprises an exhaust pipe, one end of the exhaust pipe forms an exhaust tail opening, at least one side of the exhaust tail opening towards the vehicle width direction or towards the ground is provided.

2. The exhaust system of claim 1, wherein, The exhaust system is flexibly connected.

3. The exhaust system of claim 1, wherein, The exhaust pipe comprises a first section and a second section in communication, the second section forms the exhaust tail opening away from one end of the first section, and the second section is arranged obliquely to the vehicle length direction.

4. The exhaust system of claim 3, wherein, The first section and the second section are connected by any one of flange, welding, clamp, and thread.

5. The exhaust system of claim 3, wherein, The exhaust pipe is an integral structure, and the exhaust pipe is bent to form the first section and the second section.

6. The exhaust system of claim 3, wherein, The exhaust pipe further comprises a corrugated pipe, and the first section, the corrugated pipe, and the second section are connected in sequence.

7. The exhaust system of claim 3, wherein, The second section forms an angle with the vehicle length direction in the range of [90°, 120°].

8. The exhaust system of claim 3, wherein, The second section forms an angle with the ground in the range of [45°, 90°].

9. The exhaust system of any one of claims 1 to 8, wherein, The outer surface of the exhaust pipe is covered with a heat insulation layer.

10. The exhaust system of any one of claims 1 to 8, wherein, The exhaust tail opening is arranged between the front wheel of the vehicle and the battery pack. Or the exhaust tail opening is arranged on the side of the front wheel of the vehicle away from the battery pack. Or the exhaust tail opening is arranged between the two front wheels of the vehicle.

11. The exhaust system according to any one of claims 1 to 8, comprising an engine and a muffling structure, an exhaust port of the engine, the muffling structure, and the exhaust pipe are in communication in sequence, the engine and the muffling structure are arranged in the same vehicle cabin of the vehicle, and the exhaust pipe extends out of the vehicle cabin.

12. A vehicle comprising a battery pack and the exhaust system according to any one of claims 1 to 11, the exhaust system and the battery pack are arranged apart along the length direction of the vehicle.

13. The vehicle according to claim 12, further comprising an engine, the vehicle is divided into a first space and a second space in the length direction, the engine and the exhaust system are arranged in the first space, and the battery pack is arranged in the second space.

14. The vehicle of claim 13, wherein, The first space is located behind the second space, and the engine is placed at the rear of the vehicle.

15. The vehicle of claim 13, wherein, The engine has a turbocharger for discharging engine combustion exhaust gas; the exhaust system comprises a catalyst and a muffling structure, and the turbocharger, the catalyst, and the muffling structure are in communication in sequence through a pipe structure.

16. The vehicle of claim 15, wherein, The engine and the muffling structure are arranged in an engine compartment, and the engine compartment is provided with sound insulation material for absorbing and insulating noise generated during operation of the engine.

17. The vehicle according to claim 12, further comprising a power battery and a chassis, and the power battery is mounted below the chassis of the vehicle.

18. The vehicle of claim 12, wherein, The vehicle is provided with a high-temperature-resistant part on the part of the outlet side of the exhaust tail opening.

19. The vehicle according to claim 12, further comprising a fan, and the air outlet side of the fan is arranged towards the exhaust pipe.

20. The vehicle of claim 12, wherein, The vehicle body of the vehicle is provided with a lifting lug rod, and the exhaust pipe is connected with the lifting lug rod.

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