Suspension system and vehicle

Abstract

The application discloses a suspension system and a vehicle, the suspension system comprising a right suspension assembly, the right suspension assembly comprising a right suspension and a pull rod suspension, the pull rod suspension being located above the right suspension, the pull rod suspension being connected with the right suspension and being used for being connected with a vehicle body; the bottom of the right suspension is connected with the right longitudinal beam of the vehicle body through a support, and the support is located between the right suspension and the right longitudinal beam in the height direction of the right suspension assembly. The suspension system provided by the application can improve the vibration isolation and durability of the right suspension under the transient working conditions such as engine start-stop and large-torque driving motor, reduce the risk of abnormal sound, improve the ability of the suspension system to resist the large torque of the hybrid assembly, improve the vibration isolation and durability of the suspension system under the transient large-torque working condition, and thus the NVH performance and durability of the suspension system can meet the demand of the complex and changeable operating conditions of the hybrid assembly.

Description

Technical Field

[0001] This application relates to the field of suspension technology, and more particularly to a suspension system and vehicle. Background Technology

[0002] The mounting bracket is an important force transmission component that fixes the powertrain to the vehicle. Its main functions are to support, isolate and attenuate the transmission of powertrain vibration and noise into the vehicle, limit the displacement of the powertrain under extreme operating conditions, and ensure good NVH (Noise, Vibration, Harshness) performance inside the vehicle.

[0003] In hybrid vehicles, the powertrain includes an engine, a generator, and a drive motor. Its mounting system is usually designed as a three-point mounting system, similar to that of traditional gasoline vehicles. The right mounting is connected to the engine side of the powertrain, the left mounting is connected to the motor side of the powertrain, and the rear mounting is connected to the rear end of the powertrain.

[0004] Compared to traditional gasoline vehicles, the powertrain in hybrid vehicles operates under more complex and varied conditions. The NVH and durability performance of the suspension system designed with reference to traditional gasoline vehicles is difficult to meet the requirements of these complex and varied operating conditions. Utility Model Content

[0005] This application provides a suspension system and vehicle, which aims to at least solve the technical problem that the NVH and durability performance of the suspension system of hybrid vehicles in the prior art is difficult to meet the requirements of the complex and ever-changing operating conditions of the powertrain.

[0006] In a first aspect, embodiments of this application provide a suspension system, including a right suspension assembly, the right suspension assembly including a right suspension and a tie rod suspension, the tie rod suspension being located above the right suspension, the tie rod suspension being connected to the right suspension, and the tie rod suspension being used for connection to the vehicle body; The bottom of the right suspension is connected to the right longitudinal beam of the vehicle body via a support member, and the support member is located between the right suspension and the right longitudinal beam along the height direction of the vehicle body.

[0007] Optionally, the suspension system further includes a left suspension assembly and a rear tie rod suspension assembly, wherein the length direction of the rear tie rod suspension assembly is parallel to the length direction of the vehicle body, and the rear tie rod suspension assembly is located between the left suspension assembly and the right suspension assembly along the width direction of the vehicle body.

[0008] Optionally, the number of the support members is two, and the two support members are arranged at intervals along the length direction of the vehicle body; Along the length of the vehicle body, the bottom ends of the right overhang are respectively connected to the right longitudinal beam via two support members.

[0009] Optionally, the length direction of the tie rod suspension is parallel to the length direction of the vehicle body, and the two ends of the tie rod suspension respectively include a first damping component and a second damping component. The first damping component is connected to the right suspension, and the second damping component is used to connect to the vehicle body.

[0010] Optionally, the right suspension includes a right suspension body and an active side bracket connected to the right suspension body, the active side bracket being used to connect to the engine in the hybrid powertrain; The right suspension assembly further includes a first connecting bracket, which is detachably connected to the active side bracket via a first fastener and detachably connected to the first vibration damping assembly via a second fastener.

[0011] Optionally, the first connecting bracket includes a first horizontal plate portion, a transition portion, and a second horizontal plate portion. The first horizontal plate portion is connected to the active side bracket, and the first horizontal plate portion is connected to the second horizontal plate portion through the transition portion. The second horizontal plate portion is provided with a first vertical plate portion and a second vertical plate portion. The first vertical plate portion and the second vertical plate portion are connected to the first connecting core in the first vibration damping assembly through the second fastener. The first vertical plate portion is provided with a first reinforcing rib, and the bottom of the first reinforcing rib extends to the transition portion.

[0012] Secondly, embodiments of this application provide a vehicle, including a body and a suspension system as described above.

[0013] The vehicle also includes a front subframe, on which a first mounting structure is provided on the rear crossbeam of the front subframe, and the rear tie rod suspension assembly in the suspension system is mounted on the rear crossbeam through the first mounting structure; The rear crossbeam has a clearance hole for avoiding the exhaust pipe, and the first mounting structure and the rear tie rod suspension assembly are located on one side of the clearance hole along the width direction of the vehicle body.

[0014] Optionally, the rear crossbeam is provided with a plurality of second mounting structures, which are respectively located on both sides of the clearance hole along the width direction of the vehicle body. The second mounting structures extend along the height direction of the vehicle body and are used to mount the front motor rear suspension assembly.

[0015] Optionally, a through hole is provided on the rear crossbeam, and the second mounting structure is a sleeve fixedly connected in the through hole.

[0016] In this embodiment, the structure of the right suspension assembly is improved. A tie rod suspension is added to the existing right suspension. The tie rod suspension is located above the right suspension and is connected to both the right suspension and the vehicle body. When the hybrid powertrain is operating, the force transmitted to the right suspension assembly can be shared by both the right suspension and the tie rod suspension. This means the tie rod suspension can share the force on the right suspension under instantaneous conditions such as engine start-stop and high torque from the drive motor. This prevents excessive force on the right suspension from causing excessive compression of the rubber bushing, impact between the inner and outer tubes of the right rubber bushing, deterioration of the right suspension's durability and vibration isolation, and the generation of abnormal noise. Therefore, it improves the vibration isolation and durability of the right suspension, reduces the risk of abnormal noise, and ultimately enhances the vibration isolation and durability of the suspension system under transient high torque conditions.

[0017] Furthermore, in this embodiment, the bottom of the right suspension mount is connected to the right longitudinal beam via a support member. This support member elevates the right suspension mount along the vehicle's height, causing the elastic center point of the right suspension mount to shift upwards. This increases the distance between the elastic center point of the right suspension mount and the center of mass of the hybrid powertrain, thereby improving the suspension system's ability to withstand the high torque of the hybrid powertrain and enhancing its vibration isolation and durability under transient high torque conditions. In summary, the suspension system provided in this embodiment improves the vibration isolation and durability of the right suspension mount under transient conditions such as engine start-stop and high drive motor torque, reducing the risk of abnormal noises. It also enhances the suspension system's ability to withstand the high torque of the hybrid powertrain and its vibration isolation and durability under transient high torque conditions. Ultimately, the NVH performance and durability of this suspension system meet the demands of the complex and variable operating conditions of the hybrid powertrain.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the suspension system provided in the embodiments of this application; Figure 2 This is a top view of the suspension system provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the right suspension component in the suspension system provided in the embodiments of this application; Figure 4 This is a schematic diagram showing the connection between the right suspension component and the vehicle body in the suspension system provided in this application embodiment; Figure 5A schematic diagram of the structure of the tie rod suspension, the first connecting bracket, and the second connecting bracket in the suspension system provided in this application embodiment; Figure 6 This is a schematic diagram of the tie rod suspension structure in the suspension system provided in the embodiments of this application; Figure 7 This is a schematic diagram of another rear tie rod suspension assembly in the suspension system provided in this application embodiment; Figure 8 A partial structural schematic diagram of the front subframe of a vehicle provided in this application embodiment, viewed from below. Figure 9 A schematic diagram illustrating the connection between the front subframe and the rear tie rod suspension assembly in a vehicle provided in this application embodiment; Figure 10 This is a schematic diagram illustrating the connection between the front motor rear suspension assembly and the front subframe provided in an embodiment of this application. Figure 11 Schematic diagram of the front motor and rear suspension assembly provided in the embodiments of this application Figure 1 ; Figure 12 Schematic diagram of the front motor and rear suspension assembly provided in the embodiments of this application Figure 2 .

[0020] Figure label: 10-Right suspension assembly, 11-Right suspension, 111-Right suspension body, 112-Active side bracket, 113-Mounting component, 12-Tie rod suspension, 121-First vibration damping assembly, 122-Second vibration damping assembly, 123-Tie rod bracket, 124-First rubber component, 125-First connecting core, 126-Second rubber component, 127-Second connecting core, 128-First weight reduction hole, 13-First connecting bracket, 131-First horizontal plate, 132-Second horizontal plate, 133-Transition section, 134-First vertical plate, 135-Second vertical plate, 136-First reinforcing rib, 14-Second connecting bracket, 15-First fastener, 16-Second fastener, 17-Third fastener; 20-Left suspension assembly, 30-Rear tie rod suspension assembly, 31-First bracket, 32-Second bracket, 33-Third rubber component, 34-Fourth fastener, 40-Support component; 50-Body body, 51-Right longitudinal beam, 52-First body support, 53-Second body support, 54-Right turret cover, 55-Wheel cover, 56-Reinforcing component; 60-Front subframe, 61-Rear crossbeam, 611-Mounting slot, 612-Avoidance hole, 613-Sleeve.

[0021] 70-Front motor rear suspension assembly, 71-Body bracket, 711-Horizontal plate, 712-Vertical plate, 72-Rubber bushing, 73-Motor side bracket, 731-Connecting part, 732-Mounting part, 74-Fifth fastener, 75-Sixth fastener, 76-Seventh fastener, 77-Second reinforcing rib, 78-Second weight reduction hole, 79-Counterhole. Detailed Implementation

[0022] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0023] Compared to traditional gasoline vehicles, the powertrain in hybrid vehicles operates under more complex and varied conditions. The NVH and durability performance of suspension systems designed based on those of traditional gasoline vehicles is insufficient to meet the demands of these complex and varied operating conditions. To address these issues, this application provides a suspension system and a vehicle, which are described in detail below.

[0024] Firstly, referring to Figures 1 to 4 This application discloses a suspension system, including a right suspension assembly 10. The right suspension assembly 10 includes a right suspension 11 and a tie rod suspension 12. The tie rod suspension 12 is located above the right suspension 11 and is connected to the right suspension 11. The tie rod suspension 12 is used to connect to the vehicle body 50. The bottom of the right suspension 11 is connected to the right longitudinal beam 51 of the vehicle body 50 through a support member 40. Along the height direction of the vehicle body 50, the support member 40 is located between the right suspension 11 and the right longitudinal beam 51.

[0025] The suspension system is a three-point suspension system used in various hybrid vehicles. Hybrid vehicles include a hybrid powertrain, which provides driving force to the vehicle. The hybrid powertrain includes an engine, a drive motor, and a generator. The engine and drive motor output driving force and can each drive the vehicle independently. The generator is connected to the drive motor and generates electricity to power the drive motor.

[0026] Hybrid powertrains operate in series, parallel, and pure electric modes. In series mode, the engine does not directly drive the vehicle; instead, it drives a generator to produce electricity, which is then supplied to the drive motor, which directly drives the vehicle. In parallel mode, the engine and drive motor can jointly drive the vehicle. In pure electric mode, the drive motor is powered solely by the battery pack to drive the vehicle. The engine can also drive the vehicle independently. In energy recovery mode, the drive motor operates in reverse, acting as a generator.

[0027] It should be noted that in the description of this embodiment, the front-rear, left-right, and up-down positions are consistent with the front-rear, left-right, and up-down positions of the vehicle. The height direction of the right suspension 11 and the front subframe 60 is consistent with the height direction of the vehicle body 50.

[0028] The right suspension mount 11 is also connected to the engine in the hybrid powertrain. The right suspension mount 11 includes a right suspension body 111, specifically, the bottom of the right suspension body 111 is connected to the right longitudinal beam 51 via a support member 40. The connection between the support member 40 and the right longitudinal beam 51 can be welding, bolting, etc. The right suspension body 111 can be connected to the support member 40 via a third fastener 17, which can be a bolt. The right suspension mount 11 also includes a right rubber bushing. The force transmitted to the right suspension assembly 10 during hybrid powertrain operation can be shared by the right rubber bushing in the right suspension mount 11 and the tie rod suspension 12, which can alleviate the stress on the right rubber bushing in the right suspension mount 11 and improve the vibration isolation performance and durability of the right rubber bushing. The right suspension mount 11 also includes a mounting member 113. The body 50 includes a wheel hub 55 and a reinforcing member 56 mounted on the wheel hub 55. The mounting member 113 and the reinforcing member 56 are connected by bolts.

[0029] Hybrid powertrains operate in various modes, including series, parallel, pure electric, engine direct drive, and energy recovery. They also operate under transient conditions such as engine start-stop and high torque from the drive motor, placing increasing demands on the vibration isolation and durability of the suspension system.

[0030] In this embodiment, the structure of the right suspension assembly 10 is improved. Based on the right suspension 11, a tie rod suspension 12 is added. The tie rod suspension 12 is located above the right suspension 11 and is connected to the right suspension 11 and the vehicle body 50. When the hybrid powertrain is working, the force transmitted to the right suspension assembly 10 can be shared by both the right suspension 11 and the tie rod suspension 12. That is, the tie rod suspension 12 can share the force on the right suspension 11 under instantaneous conditions such as engine start-stop and high torque of the drive motor. This can avoid excessive rubber compression in the right rubber bushing due to excessive force on the right suspension, impact between the inner and outer tubes of the right rubber bushing, deterioration of the durability and vibration isolation of the right suspension, and abnormal noise. This can improve the vibration isolation performance and durability of the right suspension 11, reduce the risk of abnormal noise, and improve the vibration isolation and durability of the suspension system under transient high torque conditions.

[0031] Furthermore, in this embodiment, the bottom of the right suspension mount 11 is connected to the right longitudinal beam 51 via a support member 40. The support member 40 raises the right suspension mount 10 along the height of the vehicle body 50, causing the elastic center point of the right suspension mount 10 to shift upwards. This increases the distance between the elastic center point of the right suspension mount 10 and the center of mass of the hybrid powertrain, thereby improving the suspension system's ability to resist the high torque of the hybrid powertrain and enhancing its vibration isolation and durability under transient high torque conditions. In summary, the suspension system provided in this embodiment can improve the vibration isolation and durability of the right suspension mount 11 under transient conditions such as engine start-stop and high torque of the drive motor, reducing the risk of abnormal noise. It also enhances the suspension system's ability to resist the high torque of the hybrid powertrain and improves its vibration isolation and durability under transient high torque conditions. Ultimately, the NVH performance and durability of this suspension system can meet the requirements of the complex and variable operating conditions of the hybrid powertrain.

[0032] In some embodiments, refer to Figure 1 and Figure 2 The suspension system also includes a left suspension assembly 20 and a rear tie rod suspension assembly 30. The length direction of the rear tie rod suspension assembly 30 is parallel to the length direction of the vehicle body 50. Along the width direction of the vehicle body 50, the rear tie rod suspension assembly 30 is located between the left suspension assembly 20 and the right suspension assembly 10.

[0033] The width direction of vehicle body 50 can be referenced. Figure 2 and Figure 4 The direction indicated by the Y-arrow in the middle, and the length direction of the vehicle body 50 can be referenced. Figure 2 and Figure 4 The direction indicated by the X arrow in the middle, and the height direction of the vehicle body 50, can be referenced. Figure 4 The direction indicated by the Z-arrow. Along the width direction of the vehicle body 50, the rear tie rod suspension assembly 30 can be closer to the left suspension assembly 20. The left suspension assembly 20 is connected to the motor side of the hybrid powertrain and the vehicle body 50, while the rear tie rod suspension assembly 30 is connected to the rear end of the hybrid powertrain and the front subframe 60.

[0034] As an example, the left overhang component 20 can be referenced. Figure 1 and Figure 2 The structure shown, the rear tie rod suspension assembly 30 can be referenced Figure 1 and Figure 2 The structure is shown. As another example, the rear tie rod suspension assembly 30 can be referenced. Figure 7 The structure shown. (Refer to...) Figure 7The rear tie rod suspension assembly 30 may include a first bracket 31, a third rubber component 33, a third connecting core, a fourth fastener 34, and a second bracket 32. The third rubber component 33 is connected within the first bracket 31, the third connecting core is connected within the third rubber component 33, the fourth fastener 34 passes through the third connecting core and is connected to the front subframe 60, and the second bracket 32 ​​is connected to the hybrid powertrain. The fourth fastener 34 may be a bolt.

[0035] In this embodiment, the left suspension assembly 20 and the right suspension assembly 10 mainly serve a load-bearing function, while the rear tie rod suspension assembly 30 mainly serves a torsional resistance function. Together, these three components attenuate the vibration and noise of the hybrid powertrain and limit its movement. The tie rod suspension 12 not only reduces the stress on the right rubber bushing in the right suspension 11 but also reduces the stress on the rear tie rod suspension assembly 30 under transient conditions, resulting in a more balanced stress distribution across the suspension system and thus improving the overall NVH performance and durability of the suspension system.

[0036] In some embodiments, refer to Figure 4 There are two support members 40, which are arranged at intervals along the length of the vehicle body 50. Along the length of the vehicle body 50, the bottom ends of the right suspension 11 are connected to the right longitudinal beam 51 through the two support members 40 respectively.

[0037] By using two support members 40, the bottom ends of the right suspension 11 can be raised, that is, the two mounting points at the bottom of the right suspension 11 can be raised. The use of two support members 40 ensures the installation stability of the right suspension assembly 10. In addition, compared to a single large support member, two small support members 40 are less expensive and lighter.

[0038] In some embodiments, refer to Figure 3 , Figure 5 and Figure 6 The length direction of the tie rod suspension 12 is parallel to the length direction of the vehicle body 50. The two ends of the tie rod suspension 12 include a first damping component 121 and a second damping component 122, respectively. The first damping component 121 is connected to the right suspension 11, and the second damping component 122 is used to connect to the vehicle body 50.

[0039] The tie rod suspension 12 includes a tie rod bracket 123, with a large end hole and a small end hole at both ends. The first damping component 121 includes a first rubber element 124 disposed within the large end hole and a first connecting core 125 connected to the first rubber element 124. The second damping component 122 includes a second rubber element 126 disposed within the small end hole and a second connecting core 127 disposed within the second rubber element 126. A first weight-reducing hole 128 is also provided on the tie rod bracket 123, located between the large end hole and the small end hole.

[0040] The length direction of the vehicle body 50 is also the X-direction. In this embodiment, the length direction of the tie rod suspension 12 is parallel to the length direction of the vehicle body 50. By setting the tie rod suspension 12, the force on the right suspension 11 along the X-direction can be distributed under instantaneous conditions such as engine start-stop and high torque of the drive motor. This can avoid excessive rubber compression in the right rubber bushing caused by excessive force on the right suspension 11 along the X-direction, resulting in impact between the inner and outer tubes of the right rubber bushing, deterioration of the durability and vibration isolation of the right suspension 11, and abnormal noise. This can improve the vibration isolation performance and durability of the right suspension 11 and reduce the risk of abnormal noise. In addition, the load transmitted to the tie rod suspension 12 can be attenuated by the first damping component 121 and the second damping component 122, which can improve the effect of alleviating the force on the right rubber bushing in the right suspension 11.

[0041] In some embodiments, refer to Figure 3 The right suspension 11 includes a right suspension body 111 and an active side bracket 112 connected to the right suspension body 111. The active side bracket 112 is used to connect to the engine in the hybrid powertrain. The right suspension assembly 10 also includes a first connecting bracket 13. The first connecting bracket 13 is detachably connected to the active side bracket 112 by a first fastener 15 and detachably connected to the first damping assembly 121 by a second fastener 16.

[0042] The first connecting bracket 13 can be connected to the active side bracket 112 via four first fasteners 15. Two of the first fasteners 15 connect only the first connecting bracket 13 and the active side bracket 112, while the other two first fasteners 15 connect the first connecting bracket 13, the active side bracket 112, and the engine of the hybrid powertrain. Specifically, the first connecting core 125 in the first damping assembly 121 is connected to the first connecting bracket 13 via second fasteners 16. The first fasteners 15 and the second fasteners 16 can be bolts.

[0043] In this embodiment, the first connecting bracket 13 and the active side bracket 112 are rigidly connected. The force transmitted to the right suspension assembly 10 during hybrid powertrain operation can be shared by the right rubber bushing in the right suspension 11 and the vibration damping assembly in the tie rod suspension 12, thus alleviating the stress on the right rubber bushing in the right suspension 11 and improving its vibration isolation and durability. Furthermore, the first connecting bracket 13 is detachably connected to the active side bracket 112 and the first vibration damping assembly 121, facilitating the assembly and disassembly of the first connecting bracket 13.

[0044] In some embodiments, refer to Figure 3 The right suspension assembly 10 also includes a second connecting bracket 14, which is connected to the second damping assembly 122 and is used to connect to the vehicle body 50. (See reference...) Figure 4 The vehicle body 50 includes a right strut 54, a first body support 52 and a second body support 53 mounted on the right strut 54, and a second connecting bracket 14 connected to the second damping assembly 122 and the first body support 52 by bolts, and the second connecting bracket 14 is also connected to the second body support 53 by bolts. Specifically, the second connecting core 127 in the second damping assembly 122 is connected to the second connecting bracket 14 by bolts.

[0045] In some embodiments, refer to Figure 1 , Figure 3 and Figure 5 The first connecting bracket 13 includes a first horizontal plate portion 131, a transition portion 133, and a second horizontal plate portion 132. The first horizontal plate portion 131 is connected to the active side bracket 112, and the first horizontal plate portion 131 is connected to the second horizontal plate portion 132 through the transition portion 133. The second horizontal plate portion 132 is provided with a first vertical plate portion 134 and a second vertical plate portion 135. The first vertical plate portion 134 and the second vertical plate portion 135 are connected to the first connecting core 125 in the first vibration damping assembly 121 through a second fastener 16. The first vertical plate portion 134 is provided with a first reinforcing rib 136, and the bottom of the first reinforcing rib 136 extends to the transition portion 133.

[0046] In this embodiment, the first vertical plate portion 134 and the second vertical plate portion 135 are arranged opposite to each other, with the first vertical plate portion 134 being closer to the transition portion 133 than the second vertical plate portion 135. The first vertical plate portion 134, the second horizontal plate portion 132, and the second vertical plate portion 135 form a U-shaped groove, and the end portion of the tie rod suspension 12 near the first connecting bracket 13 extends into the U-shaped groove. The number of first reinforcing ribs 136 can be set according to actual needs, for example, it can be set to two, three, etc. In this embodiment, the first connecting bracket 13 is stepped and has first reinforcing ribs 136, which can improve the rigidity and modal strength of the first connecting bracket 13 and avoid resonance with the excitation of the hybrid powertrain.

[0047] Secondly, embodiments of this application provide a vehicle, including a body 50 and the suspension system provided in the first aspect. Since the vehicle includes the aforementioned suspension system, it also possesses the beneficial effects of the aforementioned suspension system, which will not be elaborated upon here.

[0048] In some embodiments, refer to Figure 8 and Figure 9 The vehicle also includes a front subframe 60, on which a first mounting structure is provided on the rear crossbeam 61 of the front subframe 60. The rear tie rod suspension assembly 30 in the suspension system is mounted on the rear crossbeam 61 through the first mounting structure. The rear crossbeam 61 is provided with a clearance hole 612 for avoiding the exhaust pipe. The first mounting structure and the rear tie rod suspension assembly 30 are located on one side of the clearance hole 612 along the width direction of the vehicle body 50.

[0049] The width direction of vehicle body 50 can be referenced. Figure 8 The width direction indicated by the Y-arrow is the same as the width direction of the front subframe 60. A first mounting structure is used at least to mate with a fourth fastener 34. The first mounting structure may include a first mounting hole for the fourth fastener 34 to pass through, and may also include a mounting groove 611 into which one end of the rear tie rod suspension assembly 30 is inserted.

[0050] For hybrid vehicles, the engine is connected to an exhaust pipe, and the rear crossbeam 61 has a clearance hole 612 to avoid the exhaust pipe. The clearance hole 612 can avoid the exhaust pipe and prevent the front subframe 60 from interfering with the exhaust pipe. In addition, the first mounting structure and the rear tie rod suspension assembly 30 are located on the side of the clearance hole 612 along the width direction of the front subframe 60, which can prevent the rear tie rod suspension assembly 30 from interfering with the exhaust pipe.

[0051] In some embodiments, refer to Figure 8 and Figure 10 The rear crossbeam 61 is provided with multiple second mounting structures, which are located on both sides of the clearance hole 612 along the width direction of the vehicle body 50. The second mounting structures extend along the height direction of the vehicle body 50 and are used to install the front motor rear suspension assembly 70.

[0052] The suspension system of the pure electric vehicle adopts a three-point center of gravity arrangement. The suspension system of the pure electric vehicle includes a front motor left suspension assembly, a front motor right suspension assembly and a front motor rear suspension assembly 70. The front motor left suspension assembly and the front motor right suspension assembly are arranged at the front end of the front subframe 60, and the front motor rear suspension assembly 70 is arranged on the rear crossbeam 61 of the front subframe 60.

[0053] Since the rear tie rod suspension assembly 30 of a hybrid vehicle is typically designed in the rear crossbeam 61 of the front subframe 60. Figure 8As shown on the right side, the rear crossbeam 61 has clearance holes 612 in the middle and on the left. Therefore, to allow the front subframe 60 to be shared between pure electric and hybrid models and to meet the arrangement requirements of the front motor rear suspension assembly 70, a mounting structure for the front motor rear suspension assembly 70 needs to be designed at the location of the clearance hole 612. It should be noted that... Figure 8 This is a partial structural diagram of the front subframe viewed from below (60°). Therefore... Figure 8 The left and right positions shown are opposite to the actual left and right positions of the vehicle.

[0054] When the front motor rear suspension assembly 70 is bolted to the rear crossbeam 61, the second mounting structure can be a second mounting hole directly opened on the rear crossbeam 61 for the bolt to pass through. The second mounting structure can also be a sleeve 613 with a second mounting hole for the bolt to pass through. The second mounting structure can also be a threaded hole directly opened on the rear crossbeam 61 for threaded connection with the bolt. The second mounting structure can also be a threaded tube with a threaded hole for threaded connection with the bolt.

[0055] Reference Figure 11 and Figure 12 The front motor rear suspension assembly 70 includes a body bracket 71, a rubber bushing 72, and a motor side bracket 73. The body bracket 71 includes a horizontal plate 711 and a vertical plate 712, with the horizontal plate 711 perpendicular to the vertical plate 712 and extending across the clearance hole 612 along the width direction of the front subframe 60. The horizontal plate 711 is connected to the rear crossbeam 61 by four fifth fasteners 74. The axial direction of the fifth fasteners 74 is parallel to the height direction of the front subframe 60. The four fifth fasteners 74 are located on both sides of the horizontal plate 711 along the width direction of the front subframe 60 to ensure the dynamic stiffness of the mounting point of the front motor rear suspension assembly 70 at the front subframe 60.

[0056] The vertical plate 712 is connected to the rear crossbeam 61 via the sixth fastener 75. The axial direction of the sixth fastener 75 is parallel to the length direction of the front subframe 60, i.e., the length direction of the vehicle. Connecting the vertical plate 712 to the rear crossbeam 61 via the sixth fastener 75 improves the mounting rigidity in the X direction, ensuring vibration isolation and limiting capabilities of the vehicle under acceleration and emergency braking conditions. The fifth fastener 74 and the sixth fastener 75 can be bolts.

[0057] A rubber bushing 72 is mounted on the vehicle body bracket 71, and a motor-side bracket 73 is connected to the rubber bushing 72, which can fully utilize the Z-axis deformation of the rubber bushing 72 for torsional resistance. The axial direction of the rubber bushing 72 is aligned with the X-axis of the vehicle. A blind hole is provided on the vertical plate 712, and the rubber bushing 72 is placed in the blind hole of the vertical plate 712. The opening of the blind hole faces forward, and the bottom wall of the blind hole opposite to the opening is used to limit the rubber bushing 72 along the X-axis of the vehicle. When encountering extreme rearward impact conditions, the bottom wall of the blind hole can be used for X-axis limiting to prevent suspension failure and front motor detachment.

[0058] The motor-side bracket 73 includes a connecting portion 731 and a mounting portion 732. The connecting portion 731 is connected to a rubber bushing 72, and the mounting portion 732 is used to connect to the front motor. The connecting portion 731 extends along the X-direction of the vehicle. Based on the installation position of the front motor and the motor-side bracket 73, the mounting portion 732 is designed to be perpendicular to the connecting portion 731. This not only improves the modality of the motor-side bracket 73 but also allows for adaptive matching with the size and dimensions of the front motor, thereby improving the versatility of the front motor rear suspension assembly 70. The mounting portion 732 is connected to the front motor via a seventh fastener 76, the axis of which is aligned with the Y-direction of the vehicle. The seventh fastener 76 can be a bolt.

[0059] Both the body bracket 71 and the motor side bracket 73 are integrally die-cast from aluminum alloy. Both the body bracket 71 and the motor side bracket 73 are designed with a second reinforcing rib 77 and a second weight reduction hole 78. The mounting points of the fifth fastener 74 and the sixth fastener 75 on the body bracket 71 are designed with countersunk holes 79, which can not only enhance the dynamic stiffness at the mounting points, but also improve the rigidity and modal strength of the body bracket 71 and the motor side bracket 73, thereby improving the overall vibration isolation performance of the front motor rear suspension assembly 70.

[0060] Due to their advantages such as low operating costs, good handling and comfort, and low pollution, pure electric vehicles have gradually gained favor among major automakers and consumers in recent years. This has led to increasingly fierce competition regarding overall vehicle cost, weight, and performance, placing higher demands on automakers for the commonality and platformization of key components. The front subframe 60 and powertrain mounts are both important automotive components that significantly impact the overall vehicle's weight, cost, and performance. However, due to the differences in size, weight, and layout between the powertrains of pure electric and hybrid vehicles, existing front subframes 60 technologies are mostly designed separately for specific powertrain models. This results in the inability to share the same front subframe 60 between pure electric and hybrid models, further limiting the commonality and platformization of the front subframe 60, and increasing overall vehicle development costs and timelines.

[0061] Since pure electric vehicles do not have exhaust pipes, in this embodiment, a second mounting structure for installing the front motor rear suspension assembly 70 is designed on the front subframe 60, which accommodates the engine and hybrid gearbox layout, utilizing the clearance hole 612. When the front subframe 60 is used for a hybrid vehicle, the rear tie rod suspension assembly 30 of the hybrid vehicle's suspension system is installed via the first mounting structure. When the front subframe 60 is used for a pure electric vehicle, the front motor rear suspension assembly 70 of the pure electric vehicle's suspension system is installed via the second mounting structure. This allows the front subframe 60 to be shared between pure electric and hybrid vehicles, improving the platform utilization rate and reducing overall vehicle development costs and time. Furthermore, the aforementioned front subframe 60 has a simple structure, low cost, and balances performance and cost.

[0062] In some embodiments, refer to Figure 8 A through hole is provided on the rear crossbeam 61, and the second mounting structure is a sleeve 613 fixedly connected within the through hole. There can be four sleeves 613, with two sleeves 613 located on one side of the clearance hole 612 along the width direction of the front subframe 60, and the other two sleeves 613 located on the other side of the clearance hole 612 along the width direction of the front subframe 60. Each sleeve 613 has a second mounting hole for bolts to pass through. The sleeves 613 strengthen the mounting point on the front subframe 60 for mounting the front motor rear suspension assembly 70, thereby improving the dynamic stiffness of the mounting point of the front motor rear suspension assembly 70 on the front subframe 60.

[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0064] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the protection scope of this application.

Claims

1. A suspension system, characterized in that, The system includes a right suspension assembly, which comprises a right suspension and a tie rod suspension. The tie rod suspension is located above the right suspension and is connected to the right suspension. The tie rod suspension is used for connection to the vehicle body. The bottom of the right suspension is connected to the right longitudinal beam of the vehicle body via a support member, and the support member is located between the right suspension and the right longitudinal beam along the height direction of the vehicle body.

2. The suspension system according to claim 1, characterized in that, The suspension system also includes a left suspension assembly and a rear tie rod suspension assembly. The length direction of the rear tie rod suspension assembly is parallel to the length direction of the vehicle body. Along the width direction of the vehicle body, the rear tie rod suspension assembly is located between the left suspension assembly and the right suspension assembly.

3. The suspension system according to claim 1, characterized in that, The number of the support members is two, and the two support members are arranged at intervals along the length direction of the vehicle body; Along the length of the vehicle body, the bottom ends of the right overhang are respectively connected to the right longitudinal beam via two support members.

4. The suspension system according to any one of claims 1 to 3, characterized in that, The length direction of the tie rod suspension is parallel to the length direction of the vehicle body. The two ends of the tie rod suspension respectively include a first damping component and a second damping component. The first damping component is connected to the right suspension, and the second damping component is used to connect to the vehicle body.

5. The suspension system according to claim 4, characterized in that, The right suspension includes a right suspension body and an active side bracket connected to the right suspension body, the active side bracket being used to connect to the engine in the hybrid powertrain; The right suspension assembly further includes a first connecting bracket, which is detachably connected to the active side bracket via a first fastener and detachably connected to the first vibration damping assembly via a second fastener.

6. The suspension system according to claim 5, characterized in that, The first connecting bracket includes a first horizontal plate portion, a transition portion, and a second horizontal plate portion. The first horizontal plate portion is connected to the active side bracket, and the first horizontal plate portion is connected to the second horizontal plate portion through the transition portion. The second horizontal plate portion is provided with a first vertical plate portion and a second vertical plate portion. The first vertical plate portion and the second vertical plate portion are connected to the first connecting core in the first vibration damping assembly through the second fastener. The first vertical plate portion is provided with a first reinforcing rib, and the bottom of the first reinforcing rib extends to the transition portion.

7. A vehicle, characterized in that, Includes the vehicle body and the suspension system as described in any one of claims 1 to 6.

8. The vehicle according to claim 7, characterized in that, The vehicle also includes a front subframe, on which a first mounting structure is provided on the rear crossbeam of the front subframe, and the rear tie rod suspension assembly in the suspension system is mounted on the rear crossbeam through the first mounting structure; The rear crossbeam has a clearance hole for avoiding the exhaust pipe, and the first mounting structure and the rear tie rod suspension assembly are located on one side of the clearance hole along the width direction of the vehicle body.

9. The vehicle according to claim 8, characterized in that, The rear crossbeam is provided with a plurality of second mounting structures, which are respectively located on both sides of the clearance hole along the width direction of the vehicle body. The second mounting structures extend along the height direction of the vehicle body and are used to mount the front motor rear suspension assembly.

10. The vehicle according to claim 9, characterized in that, The rear crossbeam has a through hole, and the second mounting structure is a sleeve fixedly connected in the through hole.

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