Suspension system and vehicle with same

Abstract

The invention discloses a suspension system and a vehicle with the suspension system. The suspension system comprises a suspension, a driving device and a driving device, the stabilizing assembly comprises a plurality of energy recovery devices, each energy recovery device comprises a connecting rod, a conversion mechanism and a motor, one end of the connecting rod is connected with the suspension, the conversion mechanism is connected between the connecting rod and a motor shaft of the motor, and the energy recovery devices are arranged on the left side and the right side of the suspension respectively. The stabilization assembly has an active stabilization state and an energy recovery state, in the active stabilization state, the motor pushes the suspension to move up and down through the conversion mechanism and the connecting rod so as to reduce the height difference between the left side and the right side of the vehicle body, and in the energy recovery state, the suspension drives the motor to generate electricity through the connecting rod and the conversion mechanism. According to the suspension system, the stability and controllability of vehicle running can be effectively improved, and recovery of suspension energy can be effectively achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a suspension system and a vehicle having the same. Background Art

[0002] With the advancement of global vehicle electronic control and motor technology, more and more mechanical control devices on vehicles are replaced by electronic control devices, which can improve vehicle performance and reduce weight and energy consumption. In this context, various electronic control technologies that replace mechanical control devices in suspension systems have emerged.

[0003] In the prior art, a passive lateral stabilizer bar is usually provided in the suspension to ensure the stability of the vehicle body when the vehicle rolls during driving. However, the passive lateral stabilizer bar cannot reasonably adjust the vehicle's roll stiffness according to the vehicle's driving conditions. If the vehicle's roll stiffness is too high, it will cause driving discomfort. If the vehicle's roll stiffness is too low, it cannot avoid the vehicle's roll during driving. Therefore, the passive lateral stabilizer bar has certain limitations. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a suspension system that can effectively improve the driving stability and controllability of a vehicle and effectively realize the recovery of suspension energy.

[0005] The present invention also provides a vehicle having the above suspension system.

[0006] According to the first aspect of the present invention, the suspension system includes: a suspension; a stabilizing assembly, the stabilizing assembly includes a plurality of energy recovery devices, each of the energy recovery devices includes: a connecting rod, a conversion mechanism and a motor, one end of the connecting rod is connected to the suspension, the conversion mechanism is connected between the connecting rod and the motor shaft of the motor, and the plurality of energy recovery devices are respectively arranged on the left and right sides of the suspension, wherein the stabilizing assembly has an active stabilizing state and an energy recovery state, in which the active stabilizing state, the motor of at least one of the energy recovery devices pushes the suspension up and down through the conversion mechanism and the connecting rod to reduce the height difference between the left and right sides of the vehicle body, and in the energy recovery state, the suspension drives the motor to generate electricity through the connecting rod and the conversion mechanism.

[0007] According to the suspension system of the present invention, a suspension and a stabilizing assembly are arranged in the suspension system, and a connecting rod, a conversion mechanism and a motor are arranged in the stabilizing assembly, and one end of the connecting rod is connected to the suspension, and the conversion mechanism is connected between the connecting rod and the motor shaft of the motor, and a plurality of energy recovery devices are respectively arranged on the left and right sides of the suspension, so that when the stabilizing assembly is in an active stabilizing state, the driving stability and controllability of the vehicle can be effectively improved, and when the stabilizing assembly is in an energy recovery state, the suspension energy can be effectively recovered.

[0008] In some embodiments, the energy recovery device further includes: a swing arm, the swing arm is connected to one end of the connecting rod and is arranged at an angle to the connecting rod, and the other end of the swing arm is connected to the conversion mechanism.

[0009] In some embodiments, the swing arm includes a main body, a first end and a second end. The main body extends left and right, the first end and the second end are respectively connected to the two ends of the main body, the first end is hinged to one end of the connecting rod, and the second end is fixed to the input shaft of the conversion mechanism.

[0010] In some embodiments, the cross-section of the body is I-shaped.

[0011] In some embodiments, the connecting rod includes a first hinge portion, a second hinge portion and a main rod portion, the main rod portion extends up and down, the first hinge portion is connected to the upper end of the main rod portion and is hinged to the suspension, the second hinge portion is connected to the lower end of the main rod portion and is hinged to the swing arm, and in the up and down direction, at least a portion of the main rod portion is bent toward one side in the horizontal direction to form an avoidance space.

[0012] In some embodiments, the main rod portion includes a first rod and a second rod, the first rod and the second rod both extend in the up and down directions, the two ends of the first rod are respectively connected to the two ends of the second rod, and at least one of the first rod and the second rod is bent in the horizontal direction in a direction away from the other to form an avoidance area between the first rod and the second rod.

[0013] In some embodiments, the conversion mechanism is a harmonic reducer.

[0014] In some embodiments, the suspension includes a subframe, and the energy recovery device is fixed to the subframe via fasteners; the suspension includes a shock absorber and a first upper swing arm, and the upper end of the connecting rod is connected to the shock absorber or the first upper swing arm.

[0015] In some embodiments, the stabilizing assembly includes two energy recovery devices, and the two energy recovery devices are symmetrically arranged on the left and right sides of the rear subframe of the suspension.

[0016] A vehicle according to a second aspect of the present invention comprises: a vehicle body, a wheel assembly, and a suspension system according to the first aspect of the present invention, wherein the suspension system is connected between the vehicle body and the wheel assembly.

[0017] According to the vehicle of the second aspect of the present invention, by setting the suspension system of the first aspect, the stability and controllability of the vehicle can be effectively improved when the stabilizing assembly is in an active stabilizing state, and the suspension energy can be effectively recovered when the stabilizing assembly is in an energy recovery state.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of an energy recovery device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a suspension system according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 100. Suspension system;

[0023] 10. Energy recovery device; 11. First hinged part; 12. Second hinged part; 13. First rod; 14. Second rod; 15. Transformation mechanism; 16. Motor; 17. Main body; 18. First end; 19. Second end;

[0024] 20. Subframe;

[0025] 30. First upper swing arm;

[0026] 40. First lower swing arm;

[0027] 50. Second upper swing arm;

[0028] 60. Second lower arm;

[0029] 200. Wheel. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Reference below Figure 1 and Figure 2 A suspension system 100 according to an embodiment of a first aspect of the present invention is described.

[0032] like Figure 1 and Figure 2 As shown, the suspension system 100 according to the first embodiment of the present invention includes: a suspension and a stabilizing assembly.

[0033] The stabilization assembly includes multiple energy recovery devices 10, each energy recovery device 10 includes: a connecting rod, a conversion mechanism 15 and a motor 16, one end of the connecting rod is connected to the suspension, the conversion mechanism 15 is connected between the connecting rod and the motor 16 shaft of the motor 16, and the multiple energy recovery devices 10 are respectively arranged on the left and right sides of the suspension, wherein the stabilization assembly has an active stabilization state and an energy recovery state. In the active stabilization state, the motor 16 of at least one energy recovery device 10 pushes the suspension up and down through the conversion mechanism 15 and the connecting rod to reduce the height difference between the left and right sides of the vehicle body. In the energy recovery state, the suspension drives the motor 16 to generate electricity through the connecting rod and the conversion mechanism 15.

[0034] For example, the number of the energy recovery devices 10 may be two, three, four, five or more than six, and the multiple energy recovery devices 10 are respectively arranged on the left and right sides of the suspension. Figure 1 As shown, the upper end of the connecting rod is connected to the suspension, and further, the connecting rod can be made of aluminum alloy. The conversion mechanism 15 has an output shaft, which is arranged at the front side of the conversion mechanism 15, and the motor 16 has a motor 16 shaft, which is arranged at the rear side of the motor 16. The output shaft and the motor 16 shaft of the motor 16 can be connected by transmission.

[0035] It should be noted that transmission connection refers to connecting two or more parts together through a certain assembly method to achieve the transmission of force or power. Transmission connection can effectively transfer force or power from one part to another, so that the entire system can operate normally. The two parts of the transmission connection can be directly or indirectly connected, as long as the force transmission can be achieved.

[0036] It should be noted that when the vehicle turns or passes through a bumpy road, the wheels 200 will bounce in opposite directions in the up and down directions, thereby aggravating the vehicle roll and seriously affecting comfort. In the prior art, a passive lateral stabilizer bar is usually set in the suspension. The passive lateral stabilizer bar has a simple structure and low cost, but the passive lateral stabilizer bar cannot reasonably adjust the vehicle's roll stiffness according to the vehicle's driving conditions.

[0037] The stabilizing assembly in the suspension system 100 of the present application has an active stabilizing state and an energy recovery state. When the vehicle rolls during driving, the stabilizing assembly is in the active stabilizing state, and the stabilizing assembly can push the suspension to move up and down, thereby effectively reducing the roll of the vehicle. When the vehicle needs to reduce vibration during driving, the stabilizing assembly is in the energy recovery state, and the stabilizing assembly can convert the energy of the suspension's up and down swinging into electrical energy, thereby effectively realizing the recovery of the suspension energy.

[0038] Specifically, various types of sensors are provided in the vehicle, and the sensors may include accelerometers, gyroscopes, and wheel speed sensors, etc. The sensors can monitor the vehicle's motion status and road conditions in real time. An electronic control unit is also provided in the vehicle, and the sensors can transmit real-time monitoring data to the electronic control unit, and the electronic control unit can process the data from the sensors through a specific algorithm, so as to control the stabilization assembly to be in an active stabilization state or an energy recovery state according to the vehicle's motion status and road conditions. Furthermore, the electronic control unit can individually control each energy recovery device 10 in the stabilization assembly, so as to individually control the suspension at different positions of the vehicle, thereby better realizing the functions of active stabilization or energy recovery.

[0039] In this embodiment, when the vehicle rolls during driving, the position of the wheel 200 on one side in the left-right direction of the vehicle is lower than the position of the wheel 200 on the other side. At this time, the body of the vehicle tends to roll toward the side where the wheel 200 is lower. At this time, the sensor can monitor the movement status and road conditions of the vehicle in real time, and transmit the real-time monitoring data to the electronic control unit. The electronic control unit processes the data from the sensor through a specific algorithm, so as to control the motor 16 to output a torque of appropriate size in real time.

[0040] For example, when the vehicle turns, the electronic control unit can control the motor 16 on the side where the wheel 200 is located higher to output a torque of appropriate size in real time based on the real-time monitoring data of the sensor. The torque is transmitted to the connecting rod through the conversion mechanism 15, and drives the connecting rod to move downward. The connecting rod drives the cantilever to move downward, and the cantilever drives the wheel 200 on the side where the wheel 200 is located higher to move downward, thereby effectively adjusting the roll stiffness of the vehicle and the posture of the suspension, thereby effectively adjusting the posture of the vehicle body, and then effectively suppressing the roll of the vehicle and effectively increasing the grip of the wheel 200.

[0041] For another example, when the vehicle passes over a bumpy road, the electronic control unit can control the motor 16 on the lower side of the wheel 200 to output a torque of appropriate size in real time based on the real-time monitoring data of the sensor. The torque is transmitted to the connecting rod through the conversion mechanism 15, and drives the connecting rod to move upward. The connecting rod drives the cantilever to move upward, and the cantilever drives the wheel 200 on the lower side to move upward, thereby effectively adjusting the roll stiffness of the vehicle and the posture of the suspension, thereby effectively adjusting the posture of the vehicle body, and then effectively suppressing the roll of the vehicle.

[0042] Therefore, the stabilizer assembly in the suspension system 100 of the present application can effectively replace the role of the passive lateral stabilizer bar, and the stabilizer assembly in the suspension system 100 of the present application can adjust the roll stiffness of the vehicle in real time according to the vehicle driving condition and road conditions, so as to effectively ensure the stability of the vehicle body when the vehicle rolls during driving. In a specific example, the passive lateral stabilizer bar may not be provided in the suspension.

[0043] When the vehicle needs vibration reduction during driving, the suspension vibrates up and down and drives the connecting rod to move up and down. The conversion mechanism 15 can convert the mechanical energy generated by the up and down movement of the connecting rod into unidirectional and stable rotational kinetic energy and input it into the motor 16 for continuous power generation, thereby realizing the conversion of suspension energy, thereby effectively improving the vehicle's cruising range, and further effectively improving the user experience.

[0044] It should be noted that the motor 16 in the same energy recovery device 10 can be used as a motor when outputting torque and as a generator 16 when generating electricity, but the motor 16 in the same energy recovery device 10 cannot generate electricity when outputting torque and cannot output torque when generating electricity. In other words, the same energy recovery device 10 cannot recover suspension energy when actively controlling the suspension and cannot actively control the suspension when recovering suspension energy.

[0045] According to the suspension system 100 of the embodiment of the present invention, a suspension and a stabilizing assembly are arranged in the suspension system 100, and a connecting rod, a conversion mechanism 15 and a motor 16 are arranged in the stabilizing assembly, and one end of the connecting rod is connected to the suspension, and the conversion mechanism 15 is connected between the connecting rod and the motor 16 shaft of the motor 16, and a plurality of energy recovery devices 10 are respectively arranged on the left and right sides of the suspension, so that when the stabilizing assembly is in an active stabilizing state, the driving stability and controllability of the vehicle can be effectively improved, and when the stabilizing assembly is in an energy recovery state, the suspension energy can be effectively recovered.

[0046] In one embodiment of the present invention, the energy recovery device 10 further includes: an energy storage device and a rectifier. The energy storage device is connected to the motor 16 and is used to store the electric energy generated by the motor 16; the rectifier is connected between the motor 16 and the energy storage device.

[0047] Specifically, the energy storage device is an energy storage device that has a charging and discharging function and can be used to store the electric energy generated by the motor 16 and release the stored electric energy when needed. Furthermore, the energy storage device can be a supercapacitor.

[0048] A rectifier is a device that converts the AC power generated by the motor 16 into DC power. The rectifier converts the AC power generated by the motor 16 into DC power, supplies the power to the load after filtering, or inputs the power to the energy storage device to provide a charging voltage for the energy storage device, thereby playing the role of a charger.

[0049] For example, the rectifier is connected between the motor 16 and the energy storage device, one end of the rectifier is connected to the output end of the motor 16, and the other end of the rectifier is connected to the input end of the energy storage device. When the motor 16 is working, the alternating current generated by the motor 16 is input into the rectifier, and the rectifier converts the alternating current into stable direct current after processing, and inputs it into the energy storage device for energy storage.

[0050] Therefore, by providing an energy storage device and a rectifier in the energy recovery device 10, the alternating current generated by the motor 16 can be converted into stable direct current, thereby providing a stable charging voltage, and then storing the electric energy for use in the operation of the electric drive system or other electronic equipment. At the same time, the rectifier can effectively protect the energy storage device, thereby extending the service life of the energy storage device.

[0051] In one embodiment of the present invention, Figure 1 As shown, the energy recovery device 10 further includes: a swing arm, the swing arm is connected to one end of the connecting rod and is arranged at an angle with the connecting rod, and the other end of the swing arm is connected to the conversion mechanism 15. For example, the swing arm is arranged between the connecting rod and the conversion mechanism 15, the right end of the swing arm is connected to the lower end of the connecting rod, and the left end of the swing arm is connected to the conversion mechanism 15. Furthermore, the swing arm can be made of aluminum alloy.

[0052] In this embodiment, a swing arm is provided in the energy recovery device 10, the swing arm is connected to one end of the connecting rod and arranged at an angle with the connecting rod, and the other end of the swing arm is connected to the conversion mechanism 15. This can effectively simplify the structure of the energy recovery device 10, thereby effectively reducing the number of parts of the stabilizing assembly, thereby effectively reducing the processing difficulty of the stabilizing assembly and effectively saving installation space.

[0053] In one embodiment of the present invention, Figure 1 As shown, the swing arm includes a main body 17, a first end 18 and a second end 19. The main body 17 extends left and right, and the first end 18 and the second end 19 are respectively connected to the two ends of the main body 17. The first end 18 is hinged to one end of the connecting rod, and the second end 19 is fixed to the input shaft of the conversion mechanism 15.

[0054] For example, the main body 17 of the swing arm is extended in the left-right direction, the first end 18 of the swing arm is located at the right end of the swing arm, and the second end 19 of the swing arm is located at the left end of the swing arm. The first end 18 of the swing arm is hinged to the lower end of the connecting rod, the conversion mechanism 15 has an input shaft, and the input shaft is arranged at the rear side of the conversion mechanism 15. The second end 19 of the swing arm is fixedly connected to the input shaft of the conversion mechanism 15. Further, the second end 19 of the swing arm and the input shaft of the conversion mechanism 15 can be fixedly connected in a spline connection.

[0055] It should be noted that the spline connection is a connection method formed by machining a series of parallel protrusions and grooves on the sides of the shaft and the hole. The spline connection has good load-bearing capacity and can withstand large torque and radial force. In addition, the spline connection also has the advantages of high precision, convenient assembly and strong reliability.

[0056] When the stabilizing assembly is in the active stabilizing state, the torque output by the motor 16 can drive the swing arm to rotate about the second end 19 through the conversion mechanism 15, so that the first end 18 of the swing arm can drive the connecting rod to move up and down. When the stabilizing assembly is in the energy recovery state, the swing arm can convert the up and down movement of the connecting rod into a two-way fixed-axis rotation of the swing arm about the second end 19, so that the second end 19 of the swing arm can drive the input shaft of the conversion mechanism 15 to rotate.

[0057] In this embodiment, a main body 17, a first end 18 and a second end 19 are arranged in the swing arm, and the main body 17 extends left and right, the first end 18 and the second end 19 are respectively connected to the two ends of the main body 17, the first end 18 is hinged to one end of the connecting rod, and the second end 19 is fixed to the input shaft of the conversion mechanism 15. This not only enables the swing arm to effectively transmit torque when the stabilizing assembly is in an active stabilizing state, but also enables the swing arm to effectively transmit energy when the stabilizing assembly is in an energy recovery state.

[0058] In one embodiment of the present invention, Figure 1 As shown, the cross section of the main body 17 is in an I-shape. By setting the cross section of the main body 17 to be in an I-shape, the distribution of the material at the edge can be increased, thereby effectively improving the bending strength and torsional strength of the swing arm. In addition, compared with cross sections of other shapes, the I-shaped cross section can effectively reduce the weight of the swing arm while maintaining the same strength. Furthermore, the main body 17 can be made of aluminum alloy.

[0059] Preferably, the main body 17 can be made by extrusion molding of aluminum alloy materials. The extrusion molding of aluminum alloy materials is a processing technology that extrude metal blanks with solid or hollow cross-sectional shapes through a die under high temperature and high pressure conditions, and has the advantages of simple process flow, high production capacity, low die cost, etc. The main body 17 made by the extrusion molding process has excellent bending resistance.

[0060] In this embodiment, by setting the cross section of the main body 17 to be an I-shape, the bending and torsion resistance of the swing arm can be effectively improved, thereby effectively improving the stability and reliability of the structure. In addition, the utilization rate of materials can be effectively improved and the weight of the swing arm can be effectively reduced.

[0061] In one embodiment of the present invention, Figure 1 As shown, the connecting rod includes a first hinge part 11, a second hinge part 12 and a main rod part, the main rod part extends up and down, the first hinge part 11 is connected to the upper end of the main rod part and is hinged to the suspension, the second hinge part 12 is connected to the lower end of the main rod part and is hinged to the swing arm, in the up and down direction, at least part of the main rod part is bent toward one side in the horizontal direction to form an avoidance space.

[0062] For example, the main rod portion is extended in the up-down direction, and the first hinge portion 11 is connected to the upper end of the main rod portion and is hinged to the suspension, so that the connecting rod and the suspension can rotate relative to each other. The second hinge portion 12 is connected to the lower end of the main rod portion and is hinged to the first end 18 of the swing arm, so that the connecting rod and the swing arm can rotate relative to each other. Furthermore, the first hinge portion 11 and the second hinge portion 12 can be configured as ball joints. For example, in the up-down direction, part of the main rod portion is bent toward the left to form an escape space; for another example, in the up-down direction, the entire main rod portion is bent toward the left to form an escape space.

[0063] In this embodiment, a first hinge portion 11, a second hinge portion 12 and a main rod portion are provided in the connecting rod, and the main rod portion extends up and down, the first hinge portion 11 is connected to the upper end of the main rod portion and is hinged to the suspension, and the second hinge portion 12 is connected to the lower end of the main rod portion and is hinged to the swing arm, so that the up and down vibration of the suspension can be effectively converted into the up and down movement of the connecting rod; by bending at least a part of the main rod portion toward one side in the horizontal direction in the up and down direction, the layout of the suspension system 100 can be optimized, and interference between the connecting rod and other components can be avoided, thereby effectively improving the compactness and reliability of the suspension system 100.

[0064] In one embodiment of the present invention, Figure 1 As shown, the main rod portion includes a first rod 13 and a second rod 14, both of which extend in the up-down direction, and both ends of the first rod 13 are respectively connected to both ends of the second rod 14, and at least one of the first rod 13 and the second rod 14 is bent in the horizontal direction in a direction away from the other to form an avoidance area between the first rod 13 and the second rod 14.

[0065] For example, the first rod 13 is arranged at the rear side of the second rod 14, the first rod 13 and the second rod 14 are both extended in the up-down direction, the upper end of the first rod 13 is fixedly connected to the upper end of the second rod 14, and the lower end of the first rod 13 is fixedly connected to the lower end of the second rod 14. For example, the first rod 13 is bent toward the rear side to form a avoidance area between the first rod 13 and the second rod 14; for another example, the second rod 14 is bent toward the front side to form a avoidance area between the first rod 13 and the second rod 14; for another example, the first rod 13 is bent toward the rear side and the second rod 14 is bent toward the front side to form a avoidance area between the first rod 13 and the second rod 14.

[0066] In this embodiment, the first rod 13 and the second rod 14 are arranged in the main rod part, and the first rod 13 and the second rod 14 both extend in the up-down direction, and the two ends of the first rod 13 are respectively connected to the two ends of the second rod 14, which can effectively increase the strength and rigidity of the connecting rod, thereby effectively improving the bearing capacity of the connecting rod; by bending at least one of the first rod 13 and the second rod 14 in the horizontal direction in a direction away from the other, the layout of the suspension system 100 can be further optimized, and the interference between the connecting rod and other components can be avoided, thereby further improving the compactness and reliability of the suspension system 100.

[0067] In one embodiment of the present invention, Figure 1 As shown, the conversion mechanism 15 is a harmonic reducer. It should be noted that the harmonic reducer is a high-performance transmission device, which has the advantages of small size and high speed ratio. In addition, the harmonic reducer also has the advantages of light weight, high precision and high efficiency.

[0068] Specifically, the harmonic reducer adopts a unique internal structure design. Compared with traditional reducers with the same high speed ratio, the harmonic reducer has a more compact structure and lighter weight. At the same time, the harmonic reducer has a higher reduction ratio and speed increase ratio, which can effectively achieve the effect of speed reduction and torque increase or speed increase and torque reduction in a limited space. In addition, the harmonic reducer has a higher precision, which can effectively achieve a higher precision transmission, thereby effectively improving the energy transfer efficiency.

[0069] When the stabilizing assembly is in the active stabilizing state, the electronic control unit controls the motor 16 to output a torque of appropriate size, the motor 16 drives the harmonic reducer to work, the harmonic reducer drives the swing arm to rotate on a fixed axis, the swing arm drives the connecting rod to move up and down, and the connecting rod drives the suspension to move up and down. In this process, the harmonic reducer can effectively achieve the effect of reducing speed and increasing torque.

[0070] Specifically, since the harmonic reducer has a higher reduction ratio, the harmonic reducer can convert the high-speed rotational motion of the motor 16 shaft into the low-speed fixed-axis rotation of the swing arm, and at the same time convert the smaller torque output by the motor 16 shaft into a larger torque and act on the swing arm, thereby effectively achieving the effect of deceleration and torque increase, thereby effectively realizing the function of active control of the suspension.

[0071] When the stabilizing assembly is in the energy recovery state, the suspension vibrates up and down and drives the connecting rod to move up and down, and the connecting rod drives the swing arm to rotate on a fixed axis. The harmonic reducer can convert the two-way fixed axis rotation of the swing arm into a one-way stable rotation of the motor 16 shaft, thereby continuously driving the motor 16 to generate electricity. In this process, the harmonic reducer can effectively achieve the effect of increasing speed and reducing torque.

[0072] Specifically, since the harmonic reducer has a higher speed increase ratio, the harmonic reducer can convert the low-speed, bidirectional, fixed-axis rotation of the swing arm into a high-speed, unidirectional rotation of the motor 16 shaft, and at the same time convert the larger torque generated by the swing arm into a smaller torque and act on the motor 16 shaft, thereby effectively achieving the effect of speed increase and torque reduction, thereby effectively meeting the requirements of motor 16 for power generation, and further effectively realizing the function of suspension energy recovery.

[0073] In this embodiment, by setting the conversion mechanism 15 as a harmonic reducer, the stabilizing assembly can effectively achieve the effect of speed reduction and torque increase when it is in the energy recovery state, and effectively achieve the effect of speed increase and torque reduction when it is in the energy recovery state, thereby effectively ensuring the transmission efficiency. In addition, the harmonic reducer can also effectively reduce weight and effectively save installation space.

[0074] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the suspension includes a subframe 20, and the energy recovery device 10 is fixed to the subframe 20 by fasteners; the suspension includes a shock absorber and a first upper swing arm 30, and the upper end of the connecting rod is connected to the shock absorber or the first upper swing arm 30.

[0075] For example, the fixed connection between the energy recovery device 10 and the sub-frame 20 may be a bolt connection. Furthermore, bolt holes may be provided on the conversion mechanism 15 and the motor 16 of the energy recovery device 10, and the fasteners may be bolts. In this embodiment, the energy recovery device 10 is fixed to the sub-frame 20 by fasteners, which can effectively fix the energy recovery device 10, thereby effectively improving the stability and safety of the energy recovery device 10.

[0076] In a specific example, for example Figure 2As shown, the suspension is further provided with a first lower swing arm 40, a second upper swing arm 50 and a second lower swing arm 60. Specifically, the number of the sub-frame 20 in one suspension is one, and the number of the first upper swing arm 30, the first lower swing arm 40, the second upper swing arm 50 and the second lower swing arm 60 in one suspension are all two. The two first upper swing arms 30 are symmetrically arranged on the left and right sides of the front end of the sub-frame 20, the two first lower swing arms 40 are symmetrically arranged on the left and right sides of the front end of the sub-frame 20, and the first upper swing arm 30 is arranged on the upper side of the first lower swing arm 40. The two second upper swing arms 50 are symmetrically arranged on the left and right sides of the rear end of the sub-frame 20, the two second lower swing arms 60 are symmetrically arranged on the left and right sides of the rear end of the sub-frame 20, and the second upper swing arm 50 is arranged on the upper side of the second lower swing arm 60.

[0077] For example, the first hinged portion 11 of the connecting rod can be hinged to the shock absorber, in which case the connecting rod and the shock absorber can move up and down together and can rotate relative to each other. For another example, the first hinged portion 11 of the connecting rod can be hinged to the first upper swing arm 30, in which case the connecting rod and the first upper swing arm 30 can move up and down together and can rotate relative to each other.

[0078] This embodiment connects the upper end of the connecting rod to the shock absorber or the first upper swing arm 30, so that not only the movement of the connecting rod when the stabilizing assembly is in the active stabilizing state can effectively drive the suspension to move up and down, thereby effectively adjusting the suspension height, but also the vibration of the suspension when the stabilizing assembly is in the energy recovery state can effectively drive the connecting rod to move up and down, thereby effectively realizing the transmission of suspension energy.

[0079] In a specific example, the shock absorber in the suspension is an active shock absorber. The electronic control unit can judge the vehicle's movement status and road conditions based on the sensor data, and control the damping force of the active shock absorber in real time, so that the energy recovery device 10 can effectively share part of the load borne by the active shock absorber, thereby effectively protecting the active shock absorber, increasing the service life of the active shock absorber, and reducing maintenance costs.

[0080] In one embodiment of the present invention, Figure 2 As shown, the stabilizer assembly includes two energy recovery devices 10, which are symmetrically arranged on the left and right sides of the rear subframe 20 of the suspension. For example, one energy recovery device 10 is arranged on the left side of the front end of the rear subframe 20 of the suspension, and the other energy recovery device 10 is arranged on the right side of the front end of the rear subframe 20 of the suspension.

[0081] When the vehicle turns left or right, the energy recovery device 10 on the left or right side of the front end of the rear subframe 20 of the suspension can output a torque of appropriate size, so as to adjust the suspension height on the left or right side of the rear subframe 20, thereby ensuring that the suspension posture can be effectively controlled when the vehicle turns left or right.

[0082] When the vehicle passes over a bumpy road, the wheel 200 on the left or right side of the rear subframe 20 of the suspension is positioned lower, and the energy recovery device 10 on the left or right side of the rear subframe 20 of the suspension can output a torque of appropriate size, thereby adjusting the suspension height on the left or right side of the rear subframe 20, thereby ensuring that the suspension posture can be effectively controlled when the vehicle passes over a bumpy road.

[0083] When the vehicle needs to reduce vibration during driving, the energy recovery devices 10 on the left and right sides of the rear subframe 20 of the suspension can convert the mechanical energy generated by the up and down vibration of the suspension into electrical energy, so that the conversion of suspension energy can be achieved more efficiently. In addition, the left-right symmetrical arrangement of the two energy recovery devices 10 can effectively simplify the installation process and effectively increase the installation speed.

[0084] This embodiment can effectively improve the efficiency of the stabilizing assembly in adjusting the suspension and the efficiency of the stabilizing assembly in generating electricity by arranging two energy recovery devices 10 symmetrically on the left and right sides of the rear subframe 20 of the suspension. In addition, it can also effectively improve the installation efficiency of the energy recovery device 10.

[0085] The vehicle according to the second embodiment of the present invention comprises: a vehicle body, a wheel assembly and a suspension system 100 according to the first embodiment of the present invention. The suspension system 100 is connected between the vehicle body and the wheel assembly. For example, the wheel assembly is provided with a wheel 200, the wheel 200 is in direct contact with the ground, and the bouncing of the wheel 200 in the up-and-down direction during the driving of the vehicle can drive the suspension to vibrate in the up-and-down direction.

[0086] According to the vehicle of the embodiment of the present invention, by setting the suspension system 100 of the first aspect embodiment mentioned above, when the stabilizing assembly is in the active stabilizing state, the driving stability and controllability of the vehicle can be effectively improved, and when the stabilizing assembly is in the energy recovery state, the suspension energy can be effectively recovered.

[0087] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0089] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0091] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A suspension system, characterized in that: include: Suspension; A stabilizing assembly, wherein the stabilizing assembly includes a plurality of energy recovery devices, each of the energy recovery devices includes: a connecting rod, a conversion mechanism and a motor, one end of the connecting rod is connected to the suspension, the conversion mechanism is connected between the connecting rod and the motor shaft of the motor, and the plurality of energy recovery devices are respectively arranged on the left and right sides of the suspension, In which, the stabilization assembly has an active stabilization state and an energy recovery state. In the active stabilization state, the motor of at least one of the energy recovery devices drives the suspension to move up and down through the conversion mechanism and the connecting rod to reduce the height difference between the left and right sides of the vehicle body. In the energy recovery state, the suspension drives the motor to generate electricity through the connecting rod and the conversion mechanism.

2. The suspension system according to claim 1, characterized in that: The energy recovery device further includes: a swing arm, which is connected to one end of the connecting rod and arranged at an angle to the connecting rod, and the other end of the swing arm is connected to the conversion mechanism.

3. The suspension system according to claim 2, characterized in that: The swing arm includes a main body, a first end and a second end. The main body extends left and right. The first end and the second end are respectively connected to the two ends of the main body. The first end is hinged to one end of the connecting rod, and the second end is fixed to the input shaft of the conversion mechanism.

4. The suspension system according to claim 3, characterized in that: The cross section of the main body is in an I-shape.

5. The suspension system according to claim 2, characterized in that: The connecting rod includes a first hinge part, a second hinge part and a main rod part, the main rod part extends up and down, the first hinge part is connected to the upper end of the main rod part and is hinged to the suspension, the second hinge part is connected to the lower end of the main rod part and is hinged to the swing arm, and in the up and down direction, at least part of the main rod part is bent toward one side in the horizontal direction to form an avoidance space.

6. The suspension system according to claim 5, characterized in that: The main rod portion includes a first rod and a second rod, the first rod and the second rod both extend in the up-down direction, two ends of the first rod are respectively connected to two ends of the second rod, and at least one of the first rod and the second rod is bent in a horizontal direction away from the other to form an avoidance area between the first rod and the second rod.

7. The suspension system according to any one of claims 1 to 6, characterized in that: The conversion mechanism is a harmonic reducer.

8. The suspension system according to any one of claims 1 to 6, characterized in that: The suspension includes a subframe, and the energy recovery device is fixed to the subframe by fasteners; The suspension includes a shock absorber and a first upper swing arm, and the upper end of the connecting rod is connected to the shock absorber or the first upper swing arm.

9. The suspension system according to claim 1, characterized in that: The stabilizing assembly comprises two energy recovery devices, which are symmetrically arranged on the left and right sides of the rear subframe of the suspension.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body, a wheel assembly and a suspension system according to any one of claims 1 to 9, wherein the suspension system is connected between the vehicle body and the wheel assembly.

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