WO2023065304A1 - 一种悬架系统及其控制方法和车辆 - Google Patents
一种悬架系统及其控制方法和车辆 Download PDFInfo
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- WO2023065304A1 WO2023065304A1 PCT/CN2021/125706 CN2021125706W WO2023065304A1 WO 2023065304 A1 WO2023065304 A1 WO 2023065304A1 CN 2021125706 W CN2021125706 W CN 2021125706W WO 2023065304 A1 WO2023065304 A1 WO 2023065304A1
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- controller
- valve
- suspension system
- gas
- compressor
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- 239000000725 suspension Substances 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 36
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- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
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- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
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- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
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Definitions
- the present application relates to the technical field of vehicle structures, in particular to a suspension system, a control method thereof, and a vehicle.
- the suspension system of the car is connected between the sprung mass and the unsprung mass, which can weaken the disturbance of the road excitation to the output variable of the car.
- Vehicle output is generally considered from two aspects of comfort and road adhesion.
- the corresponding vehicle output variables are body acceleration and tire deformation, and there is a certain contradiction between the two.
- the car suspension system needs to consider the compromise relationship between the suspension stroke and the design cost, so that the driving car can make a response that meets the needs of the driver or the vehicle design, and meets the needs of comfort and handling. , Security design requirements.
- Automotive suspension systems generally include passive suspension, semi-active suspension and full active suspension.
- Passive suspension system has been a mainstream suspension system for a long time due to its low cost advantage.
- the semi-active suspension system is gradually favored by the market due to its controllability and self-adaptive adjustment.
- Damper structure with adjustable damping The active suspension is configured on very few top models, and requires additional energy input, such as hydraulic pumps, linear motors, etc., to achieve active and dynamic operations.
- the current semi-active air suspension system usually uses a semi-active shock absorber as a damping element, and a gas spring as an elastic element. By inflating and deflating it, its height characteristics can be adjusted to meet different external input requirements.
- an air pump is mainly used to supply gas from the atmosphere to the gas spring, and when exhausting, the gas is directly discharged into the atmosphere, so as to realize the lifting of the gas spring.
- this air circuit open-loop solution since the air with lower air pressure needs to be pressurized to a certain pressure, and the pressure changes greatly, it takes a long time and the lifting speed of the vehicle body is slow.
- the power of the air compressor needs to be large, and the noise is also large.
- the application provides a suspension system and its control method and vehicle.
- the gas pressure in the air circuit system of the suspension system changes less, so the speed of adjusting the height of the gas spring is faster, and the power of the compressor of the suspension system is lower. Small, low noise and low power consumption.
- each part structure is an independent structure, which can be manufactured and installed separately, and the cost is low, and it is beneficial to realize the upward movement of the controller, thereby realizing the unified control of the whole vehicle.
- the present application provides a suspension system.
- the suspension system includes a suspension assembly, a driver, a controller, a compressor and an air tank.
- the above suspension assembly has a gas spring and a height sensor.
- the gas tank is filled with gas, the gas tank is connected to the compressor through the first ventilation pipeline, and the compressor is connected to the gas spring through the second ventilation pipeline, then the compressor can transmit the gas in the gas tank to the gas spring, Or transfer the gas in the gas spring to the gas tank.
- the above-mentioned first ventilation pipeline is provided with a first on-off valve
- the second ventilation pipeline is provided with a second on-off valve.
- the control of the entire air circuit can be ventilated or closed.
- the driver is electrically connected to the controller, the compressor, the first on-off valve and the second on-off valve, and the controller is electrically connected to the height sensor.
- the above-mentioned suspension system can be installed between the wheel of the vehicle and the vehicle body, then during the working process of the suspension system, the above-mentioned height sensor is used to detect the distance between the wheel and the vehicle body, and the controller is used to receive the height signal of the above-mentioned height sensor, Generate a control signal based on the height signal and pass the control signal to the driver. After the driver receives the above control signal, it is used to control the opening or closing of the first switch valve and the opening or closing of the second switch valve according to the control signal, and control the compressor to transmit gas to the gas spring or stop transmitting gas.
- the gas circuit system of the suspension system in the technical solution of the present application includes a gas tank for storing gas, the gas in the gas tank has a certain pressure, and the pressure of the gas in the gas tank is the same as the pressure of the gas required in the gas spring.
- the pressure change is small, the speed of adjusting the height of the gas spring is fast, and the power of the compressor of the suspension system is small, and the noise and power consumption are also low.
- each part structure is an independent structure, which can be manufactured and installed separately, the cost is low, and it is beneficial to realize the upward movement of the controller, which in turn is beneficial to realize the unified control of the whole vehicle.
- the above-mentioned controller receives the height signal from the height sensor, and the controller can be directly connected with the height sensor to receive the above-mentioned height signal.
- the driver can also be connected to a height sensor, and the driver acquires the above-mentioned height signal and transmits the height signal to the controller.
- the electrical connection between the controller and the height sensor may refer to the direct connection between the controller and the height sensor, or the connection between the controller and the height sensor through a driver.
- the above-mentioned suspension assembly further includes a shock absorber.
- the above-mentioned driver is connected with the shock absorber, and the driver is used to control the shock absorber to adjust the damping force according to the control signal of the above-mentioned controller.
- the shock absorber can adjust the damping force according to the actual running conditions of the vehicle, thereby improving the riding comfort of the user.
- the above-mentioned compressor is also connected with a third ventilation pipeline, and the third ventilation pipeline is connected with the external atmosphere, so that the compressor can compress the air in the atmosphere and transmit it to the air tank, so as to replenish the air tank.
- the above-mentioned third ventilation pipeline is provided with a third on-off valve, and the third on-off valve needs to be opened only when it is necessary to replenish air. When there is no need for supplementary air, the third on-off valve is closed, so that the air in the suspension system keeps circulating inside and will not leak from the third ventilation pipeline.
- the suspension system can supply air by itself, so as to keep the amount of gas in the suspension system sufficient to maintain normal operation.
- the third on-off valve may also be connected to the driver, and the above-mentioned driver is connected to the controller.
- the controller can be connected with a control button, and the user presses the control button according to the demand, so as to replenish air.
- the above-mentioned controller may control timing to replenish air.
- the suspension system may further include a pressure sensor, which is connected to the gas tank and used to detect the pressure in the gas tank.
- the above-mentioned first switching valve is a three-way valve, which is used to transmit the gas in the gas tank to the gas spring, and is used to transmit the gas in the atmosphere to the gas tank.
- the driver is electrically connected to the compressor, the three-way valve and the third on-off valve, and the controller is electrically connected to the pressure sensor.
- the above-mentioned controller is used to obtain the pressure signal of the pressure sensor, and generate an air supply signal according to the pressure signal.
- the driver obtains the air supply signal generated by the above-mentioned controller, and drives the three-way valve to connect the compressor and the air tank according to the air supply signal, drives the third on-off valve to open, and drives the compressor to compress the air and transmit it to the air tank.
- the gas can be supplemented according to the actual situation of the gas in the gas tank.
- the gas in the gas tank is found to be insufficient, the gas can be supplemented at any time to ensure the reliability of the suspension system and prevent useless failures. Gas operation.
- the above-mentioned controller receives the pressure signal of the pressure sensor, and the controller can be directly connected with the pressure sensor to receive the above-mentioned pressure signal.
- the driver may also be connected to a pressure sensor, and the driver acquires the above-mentioned pressure signal and transmits the pressure signal to the controller.
- the electrical connection between the controller and the pressure sensor may refer to the direct connection between the controller and the pressure sensor, or the connection between the controller and the pressure sensor through a driver.
- the number of suspension components included in the suspension system is not limited, and the suspension system includes at least two suspension components.
- the gas springs in each suspension assembly are connected to a second on-off valve.
- at least two suspension components can adjust the heights of the positions where the at least two suspension components are located, and can realize separate control, thereby improving the stability and comfort of the vehicle.
- all the second on-off valves are integrated, thereby reducing the space occupied by the second on-off valves.
- each suspension component can be provided with a corresponding driver, so that the distance between the driver and the corresponding suspension component can be made closer, so as to shorten the wiring harness and facilitate the layout of the suspension.
- the wiring of the rack system can be provided with a corresponding driver, so that the distance between the driver and the corresponding suspension component can be made closer, so as to shorten the wiring harness and facilitate the layout of the suspension.
- the suspension system may include four suspension assemblies, and the four suspension assemblies are arranged in a matrix, so that the four corners of the vehicle are all provided with the suspension assemblies, thereby adjusting the height of the vehicle body at the four corners.
- the above four suspension components do not need to be driven at the same time, and the corresponding gas springs can be controlled to inflate and deflate according to the signals of the corresponding height sensors, so as to improve the stability and comfort of the vehicle.
- the controller can be not only a system controller, but also a domain controller or a vehicle controller.
- a vehicle usually includes multiple control systems, and the above-mentioned domain controller means that the controller can control at least two of the multiple control systems.
- the vehicle controller refers to the ability to control all control systems.
- the present application also provides the suspension system control method in the above first aspect, the control method specifically includes: receiving the height signal from the height sensor; comparing the height signal with the target height, when the height signal is less than the target height , the height of the gas spring needs to be increased.
- the above-mentioned first switch valve and the second switch valve are controlled to open, and the compressor is controlled to rotate forward to drive the gas in the gas tank to flow to the gas spring, so that the height of the gas spring increases; when the height signal is greater than When the target height needs to be reduced, the height of the gas spring needs to be lowered.
- the above-mentioned first on-off valve and the second on-off valve are controlled to open, and the reverse direction of the compressor is controlled to drive the gas in the gas spring to flow to the gas tank, so that the height of the gas spring is reduced; and
- the first switch valve and the second switch valve are controlled to be closed.
- the inflation and deflation process of the suspension system can be realized by using the above method. This solution utilizes the gas tank to load gas, the power of the compressor of the suspension system is small, and the noise and power consumption are also low.
- the above-mentioned target height may be a specific height value or a height range value, and the height signal being equal to the target height means that the height signal is within the above-mentioned height range value.
- the above-mentioned compressor can also be connected with a third ventilation pipeline, and the third ventilation pipeline is connected with the external atmosphere, so that the compressor can compress the air in the atmosphere and transmit it to the air tank, so as to replenish the air tank.
- the specific air supply control method is: controlling the opening of the first on-off valve and the third on-off valve, and controlling the compressor to compress the air and transmit it to the air tank.
- the third on-off valve is closed, so that the air in the suspension system keeps circulating inside and will not leak from the third ventilation pipeline.
- the suspension system can supply air by itself, so as to keep the amount of gas in the suspension system sufficient to maintain normal operation.
- the suspension system may also include a pressure sensor connected to the gas tank for detecting the pressure in the gas tank.
- the control method also includes obtaining the pressure detected by the pressure sensor.
- the above pressure is lower than the set pressure, it is considered that the gas in the gas tank is insufficient, and an air supply signal is generated; according to the air supply signal, the first on-off valve and the third on-off valve are controlled to open, and the control The compressor compresses the air and sends it to the air tank.
- the gas in the gas tank is found to be insufficient, the gas can be replenished at any time to ensure the reliability of the suspension system, and there will be no useless gas replenishment operation.
- the present application also provides a vehicle, which includes a vehicle body, an axle, wheels, and the suspension system in any one of the above technical solutions.
- the above-mentioned wheels are installed on the wheel axle, and the suspension system is installed between the wheel axle and the vehicle body.
- the suspension system of this vehicle adjusts the height of the gas spring faster, and the power of the compressor of the suspension system is relatively small. Therefore, the corresponding speed of the vehicle to the unevenness of the road surface is also faster, and the noise and power consumption are also lower.
- the structures of the controller and the driver are independent structures, which can be manufactured and installed separately. The cost is low, and it is beneficial to realize the upward movement of the controller, which in turn is beneficial to realize the unified control of the whole vehicle.
- the aforementioned controller may be a domain controller.
- the vehicle includes multiple systems, and some of the multiple systems share the domain controller. That is, the domain controller can control at least two systems of the vehicle.
- the above-mentioned controller is a vehicle controller.
- a vehicle includes multiple systems, all of which share the overall vehicle controller. This scheme can realize the control of all systems by a vehicle controller.
- the suspension system when the suspension system is set up, the suspension system may include a plurality of suspension components, and the plurality of suspension components are provided in one-to-one correspondence with the wheels of the vehicle.
- the stability during the operation of the vehicle can be improved, and the comfort of the user can be improved.
- Fig. 1 is a kind of structural diagram of vehicle in the embodiment of the present application.
- Fig. 2 is a connection schematic diagram of a suspension system of the vehicle in the embodiment of the present application.
- Fig. 3 is a schematic diagram of an inflation process of the suspension system of the vehicle in the embodiment of the present application.
- Fig. 4 is a schematic diagram of a deflation process of the suspension system of the vehicle in the embodiment of the present application.
- Fig. 5 is a connection schematic diagram of another suspension system of the vehicle in the embodiment of the present application.
- Fig. 6 is a flowchart of a control method of the suspension system in the embodiment of the present application.
- embodiments of the present application provide a suspension system, a control method thereof, and a vehicle.
- the following introduces its application scenarios.
- people have higher and higher requirements for the comfort of vehicles during driving, and they need to meet the requirements of safety and maneuverability.
- the suspension system of the vehicle can better improve the comfort of the vehicle.
- the suspension system is connected between the sprung mass and the unsprung mass of the vehicle.
- the unsprung mass can be understood as structures such as wheels.
- gas springs and shock absorbers are used to form the above air suspension system, and the controller can drive the gas springs and shock absorbers to work according to the current state of the vehicle, and adjust the height of the vehicle and the damping of the shock absorbers.
- the controller can control the driving gas spring and shock absorber to work, adjust the height between the sprung mass and the unsprung mass, so that the sprung mass and the unsprung mass reach the set value At the same time, the shock absorber outputs the optimal damping force to improve the user's comfort.
- a closed-loop solution of the gas circuit is proposed.
- the current controller, driver, and valve body are integrated into one structure, which has problems such as high coupling, difficult manufacturing, and high cost.
- the controller can only be used as an independent controller to control the suspension system, which is not conducive to the integration of the whole vehicle.
- FIG. 1 is a schematic structural diagram of a vehicle in an embodiment of the present application
- FIG. 2 is a schematic connection diagram of a suspension system of a vehicle in an embodiment of the present application
- the vehicle provided by the present application includes a vehicle body 100 , an axle 300 , wheels 200 and a suspension system.
- the suspension system includes a suspension assembly 1 , a driver 2 , a controller 3 , a compressor 4 and an air tank 5 .
- the air tank 5, the compressor 4 and the suspension assembly 1 are connected in series through a ventilation pipeline in sequence.
- the gas tank 5 and the compressor 4 are connected through a first ventilation pipeline 6, and the first ventilation pipeline 6 is provided with a first ventilation pipeline.
- the above-mentioned compressor 4 is connected with the suspension assembly 1 through a second ventilation pipeline 8 , and the second ventilation pipeline 8 is provided with a second on-off valve 9 . Then when the first on-off valve 7 and the second on-off valve 9 are in an open state, the gas in the gas tank 5 can pass through the first ventilation pipeline 6, the compressor 4 and the second ventilation pipeline in sequence under the action of the compressor 4 8 flows to the suspension assembly 1 to drive the suspension assembly 1 to work.
- the above-mentioned suspension assembly 1 specifically includes a gas spring 101 and a height sensor 103, and the compressor 4 is specifically connected to the gas spring 101 of the suspension assembly 1 through the second ventilation pipeline 8, so as to control the height of the gas spring 101, so that the vehicle body 100 and the The distance between the wheels 200 is kept within a set range, which improves the stability and comfort of the vehicle body 100 when the user's vehicle is running.
- the controller 3 is electrically connected to the driver 2 , so that signal transmission can be performed between the controller 3 and the driver 2 .
- the driver 2 is also electrically connected to the compressor 4 , the first on-off valve 7 and the second on-off valve 9 , and the controller 3 is electrically connected to the height sensor 103 .
- the controller 3 is used to receive the height signal of the height sensor 103, generates a control signal according to the above-mentioned height signal, and transmits the control signal to the driver 2; the driver 2 is used to drive the first on-off valve 7 to open or Close, control the second switch valve 9 to open or close, control the compressor 4 to transmit gas to the gas spring 101 or stop transmitting gas.
- the height sensor 103 detects the detected height between the vehicle body 100 and the axle 300 at any time to generate a height signal.
- Controller 3 can receive the height signal of above-mentioned height sensor 103, and controller 3 compares the height signal received with the target signal of the target height, and when the detected height is less than the target height, it is confirmed that the height of the vehicle body 100 needs to be adjusted, that is, the height of the vehicle body 100 needs to be adjusted.
- the control signal generated by the controller 3 is an inflatable signal, and the inflatable signal indicates to inflate the gas spring 101 .
- Fig. 3 is a schematic diagram of an inflation process of the suspension system of the vehicle in the embodiment of the present application.
- the controller 3 transmits the above-mentioned inflation signal to the driver 2, and the driver 2 drives the first switch valve according to the above-mentioned inflation signal 7 and the second on-off valve 9 are opened, so that the ventilation pipeline between the gas spring 101 and the gas tank 5 is conducted. That is to say, both the first ventilation pipeline 6 and the second ventilation pipeline 8 are connected.
- the driver 2 drives the compressor 4 to transport the gas in the gas tank 5 to the gas spring 101 to inflate the gas spring 101 . It can be considered that in this working state, the compressor 4 is running forward.
- the controller 3 controls the driver 2 to drive the above-mentioned first switch valve 7 to close, the second switch valve 9 to close and the compressor 4 to stop running, and the inflation process of the gas spring 101 stop.
- the control signal generated by the controller 3 is a deflation signal, which indicates deflation of the gas spring 101.
- 4 is a schematic diagram of a deflation process of the suspension system of the vehicle in the embodiment of the present application. As shown in FIG. The first on-off valve 7 and the second on-off valve 9 are opened, so that the ventilation pipeline between the gas spring 101 and the gas tank 5 is connected, that is to say, both the first ventilation pipeline 6 and the second ventilation pipeline 8 are connected. Moreover, the driver 2 drives the compressor 4 to transport the gas in the gas spring 101 to the gas tank 5 to deflate the gas spring 101 .
- the compressor 4 is running in reverse.
- the controller 3 controls the driver 2 to drive the first on-off valve 7 to close, the second on-off valve 9 to close and the compressor 4 to stop running, and the deflation of the gas spring 101 The process stops.
- the gas tank 5 is used to store gas
- the compressor 4 transports the gas in the gas tank 5 to the gas spring 101 , and puts the gas in the gas spring 101 into the gas tank 5 .
- the change of the pressure of the gas is small, that is to say, the amount of increasing and decreasing the pressure of the gas is small.
- the inflation and deflation process takes a longer time, and the lifting speed of the vehicle body 100 is faster.
- the power required by the compressor 4 is also small, and the noise and power consumption are small.
- the structures of the controller 3, the driver 2, the first on-off valve 7 and the second on-off valve 9 are all independent structures. Therefore, it can be manufactured and installed separately, and the cost is low.
- the above-mentioned controller 3 can also be used to control other systems besides controlling the suspension system.
- the above-mentioned controller 3 receives the height signal from the height sensor 103, and the controller 3 can be directly connected to the height sensor 103 to receive the above-mentioned height signal.
- the driver 2 can also be connected to the height sensor 103 , the driver 2 acquires the above-mentioned height signal, and transmits the height signal to the controller 3 .
- the electrical connection between the controller 3 and the height sensor 103 may mean that the controller 3 is directly connected with the height sensor 103 , or may mean that the controller 3 is connected with the height sensor 103 through the driver 2 .
- the above-mentioned suspension assembly 1 further includes a shock absorber 102 .
- the above-mentioned driver 2 is connected with the shock absorber 102, and the driver 2 is used for controlling the shock absorber 102 to adjust the damping force according to the control signal of the above-mentioned controller 3.
- the damping force of the shock absorber 102 can be adjusted while adjusting the height of the gas spring.
- the shock absorber can adjust the damping force according to the actual running conditions of the vehicle, thereby improving the riding comfort of the user.
- the above-mentioned vehicle includes multiple systems.
- the vehicle may include multiple systems such as a braking system, a steering system, or an auxiliary driving system in addition to the suspension system.
- the above-mentioned controller 3 may be a system controller, that is to say, the above-mentioned system controller may only be used to control the work of the suspension system, and has no connection with other systems.
- the above-mentioned controller 3 may also be a domain controller, which is used to control some of the multiple systems of the vehicle. That is, the domain controller is used to control at least two systems of the vehicle, rather than all systems of the vehicle.
- the controllers 3 of the lifting vehicle it is beneficial to share the controllers 3 of the lifting vehicle, so that the controllers 3 can be moved up, so as to reduce the total number of system controllers included in the vehicle.
- the above-mentioned controller 3 may also be a vehicle controller, which is used to control all systems of the vehicle, so as to realize unified control and meet the development requirements of current vehicles.
- Fig. 5 is a schematic connection diagram of another suspension system of the vehicle in the embodiment of the present application.
- the above-mentioned compressor 4 is also connected with a third ventilation pipeline 10, and the third ventilation pipeline 10 is connected with the outside atmosphere.
- the above-mentioned third ventilation pipeline 10 is provided with a first Three switching valves 11.
- the controller 3 can receive the air supplement command, and control the third on-off valve 11 to open according to the air supplement command, and control the compressor 4 to compress the air and transmit it to the air tank 5 .
- the gas is prone to slow leakage, resulting in less total gas in the suspension system.
- the suspension system can realize self-replenishment of gas, keep the total amount of gas in the suspension system sufficient, and ensure the reliability of the suspension system.
- the above-mentioned first switching valve 7 is a three-way valve, and in the first working state of the three-way valve, the gas tank 5 is connected to the first air port of the compressor 4, and the first air port is connected to the first air port of the compressor 4.
- the gas spring 101 is communicated for inflating or deflating the gas spring 101 .
- the gas tank 5 In the second working state of the three-way valve, the gas tank 5 is connected to the second vent port of the compressor 4 , and the second vent port is communicated with the third vent pipeline 10 for replenishing the gas tank 5 .
- the three-way valve In the third working state of the three-way valve, the three-way valve is in a closed state, so that the gas tank 5 cannot realize the inflow or outflow of gas.
- the above-mentioned driver 2 is electrically connected with the controller 3, the compressor 4, the pressure sensor 12, the three-way valve and the third switch valve 11, and the controller 3 can receive the gas supplement command, generate a gas supplement signal and transmit the gas supplement signal to drive 2.
- the driver 2 is used to control the three-way valve to be in the above-mentioned second working state according to the above-mentioned air supply signal, and drive the third switch valve 11 to open, and drive the compressor 4 to compress the air and transmit it to the air tank 5, so as to realize the suspension system of qi.
- the controller 3 of the suspension system can be connected to a control button, and the user can send an air supplement instruction to the controller 3 by operating the above-mentioned control button regularly or irregularly.
- the controller 3 receives the air supply command from the control button, generates an air supply signal, and transmits the above air supply signal to the driver 2, and the driver 2 realizes the air supply of the suspension system according to the above air supply signal.
- controller 3 regularly replenish the air to the suspension system, that is, the controller 3 periodically generates an air replenishment signal to control the driver 2 to perform suspension suspension according to the air replenishment signal. System replenishment.
- the above-mentioned suspension system may further include a pressure sensor 12, which is connected to the air tank 5 and can be used to detect the pressure in the air tank 5 to determine whether it is necessary to replenish air.
- the above-mentioned pressure sensor 12 is electrically connected to the controller 3 , and the controller 3 is used to acquire the pressure signal of the pressure sensor 12 , generate an air supplement signal according to the pressure signal, and transmit the air supplement signal to the driver 2 .
- the driver 2 drives the suspension system to automatically replenish the air according to the air replenishment signal of the above-mentioned controller 3 .
- This solution can realize the automatic air replenishment of the suspension system and avoid frequent manual air replenishment.
- the above-mentioned controller 3 receives the pressure signal from the pressure sensor 12, and the controller 3 can be directly connected to the pressure sensor 12 to receive the above-mentioned pressure signal.
- the driver 2 may also be connected to the pressure sensor 12 , and the driver 2 acquires the above-mentioned pressure signal and transmits the pressure signal to the controller 3 .
- the electrical connection between the controller 3 and the pressure sensor 12 may refer to the direct connection between the controller 3 and the pressure sensor 12 , or may refer to the connection between the controller 3 and the pressure sensor 12 through the driver 2 .
- the above-mentioned suspension system may include at least two suspension assemblies 1 , and the gas spring 101 in each suspension assembly 1 is connected to a second switching valve 9 .
- the second switch valve 9 of each suspension assembly 1 can be an independent structure, so as to facilitate the control of each gas spring 101 .
- Each suspension system is also provided with a driver 2 correspondingly.
- the driver 2 and the second switch valve 9 can be arranged close to each other so as to shorten the wiring harness. It is convenient to lay out the wiring of the suspension system.
- all the second switching valves 9 of the suspension assembly 1 are integrally structured, which is beneficial to reduce the volume of the suspension assembly 1 .
- the suspension system includes four suspension assemblies 1 , and the four suspension assemblies 1 are arranged in a matrix.
- the four suspension assemblies 1 are arranged in a matrix, so that the four corners of the vehicle can be provided with the suspension assemblies 1, and the height of the vehicle body 100 at the four corners can be adjusted.
- the four suspension assemblies 1 do not need to be driven simultaneously, and the corresponding gas springs 101 can be controlled to inflate and deflate according to the signals of the corresponding height sensors 103, so as to improve the stability and comfort of the vehicle.
- the vehicle includes a plurality of suspension assemblies 1, and the plurality of suspension assemblies 1 are arranged in one-to-one correspondence with the wheels 200 of the vehicle, so that the height between each wheel 200 and the vehicle body 100 can be adjusted, and the stability and stability of the vehicle can be improved. comfort.
- Fig. 6 is a flow chart of the control method of the suspension system in the embodiment of the present application. As shown in Fig. 6, the control method specifically includes the following steps:
- Step S101 receiving a height signal from a height sensor
- the height sensor can detect the detection height between the vehicle body and the axle at any time. During the driving process of the vehicle, the height between the vehicle body and the axle needs to be maintained at a certain level, so that the form state of the vehicle can be relatively stable.
- Step S102 comparing the altitude signal with the target altitude; when the altitude signal is less than the target altitude, execute step S103; when the altitude signal is greater than the target altitude, execute step S104; when the altitude signal is equal to the target altitude, execute step S105;
- the height signal When the height signal is less than the target height, it is considered that the height between the body and the axle is too low, and the height of the gas spring needs to be increased so that the height between the body and the axle meets the target height; when the height signal is greater than the target height, it is considered that the height between the body and the axle If the height between the vehicle body and the axle is too high, it is necessary to reduce the height of the gas spring so that the height between the vehicle body and the axle meets the target height.
- the above-mentioned target height can be a specific height value, or a height range value
- the height signal being equal to the target height means that the height signal is within the above-mentioned height range value.
- Step S103 control the opening of the first on-off valve and the second on-off valve, and control the forward rotation of the compressor to drive the gas in the gas tank to flow to the gas spring; so that the height of the gas spring is increased, and the height between the vehicle body and the axle is increased.
- Step S104 controlling the opening of the first on-off valve and the second on-off valve, and controlling the reverse rotation of the compressor to drive the gas in the gas spring to flow to the gas tank; so that the height of the gas spring is lowered, and the height between the vehicle body and the axle is lowered.
- Step S105 controlling the first on-off valve and the second on-off valve to close; so that the height of the gas spring remains constant, and thus the height between the vehicle body and the axle remains constant.
- the above control process can realize the suspension system of the vehicle to automatically adjust the height between the vehicle body and the axle, so as to improve the stability of the vehicle during operation.
- the above-mentioned compressor can also be connected with a third ventilation pipeline, and the third ventilation pipeline is connected with the external atmosphere, so that the compressor can compress the air in the atmosphere and transmit it to the air tank, so as to replenish the air tank.
- the specific air supply control method is: receiving the air supply signal, controlling the opening of the first on-off valve and the third on-off valve according to the above-mentioned air supply signal, and controlling the compressor to compress the air and transmit it to the air tank.
- the third on-off valve is closed, so that the air in the suspension system keeps circulating inside and will not leak from the third ventilation pipeline.
- the suspension system can automatically replenish air, so as to keep the amount of gas in the suspension system sufficient to maintain normal operation.
- the triggering method of the above-mentioned air supply signal is not limited.
- the controller of the suspension system can be connected to a control button, and the user can periodically or irregularly operate the above-mentioned control button to send the air supply signal to the controller. Gas signal command.
- the controller receives the air supply command from the control button, generates an air supply signal, and realizes the air supply of the suspension system according to the above air supply signal.
- the controller can also be made to supplement air to the suspension system regularly, that is to say, the controller periodically generates an air supplement signal, so as to supplement air to the suspension system according to the air supplement signal.
- the above-mentioned suspension system may further include a pressure sensor, which is connected to the gas tank and used to detect the pressure in the gas tank. Then the above control method also includes obtaining the pressure detected by the pressure sensor. When the above pressure is less than the set pressure, it is considered that the gas in the gas tank is insufficient, and an air supply signal is generated; according to the air supply signal, the first on-off valve and the third on-off valve are controlled to open , control the compressor to compress the air and transmit it to the air tank.
- the gas in the gas tank is found to be insufficient, the gas can be replenished at any time to ensure the reliability of the suspension system, and there will be no useless gas replenishment operation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims (16)
- 一种悬架系统,其特征在于,包括悬架组件、驱动器、控制器、压缩机和气罐,所述悬架组件包括气体弹簧和高度传感器,其中:所述气罐与所述压缩机通过第一通气管路连接,所述第一通气管路设置有第一开关阀;所述压缩机与所述气体弹簧通过第二通气管路连接,所述第二通气管路设置有第二开关阀;所述驱动器与所述控制器、所述压缩机、所述第一开关阀和所述第二开关阀分别电连接,所述控制器与所述高度传感器;所述控制器用于接收所述高度传感器的高度信号,并根据所述高度信号生成控制信号,将所述控制信号传递至所述驱动器;所述驱动器用于根据所述控制信号控制所述第一开关阀打开或者关闭、所述第二开关阀打开或者关闭,控制所述压缩机驱动所述气体弹簧中的气体流向所述气罐、驱动所述气罐中的气体流向所述气体弹簧,或者停止传输气体。
- 如权利要求1所述的悬架系统,其特征在于,所述压缩机还连接有第三通气管路,所述第三通气管路与外界大气连接,所述第三通气管路设置有第三开关阀,所述第一开关阀和所述第三开关阀处于打开状态时,所述压缩机将空气压缩后传输至所述气罐。
- 如权利要求2所述的悬架系统,其特征在于,所述气罐还连接有压力传感器,所述第一开关阀为三通阀,所述驱动器与所述压缩机、所述三通阀和所述第三开关阀电连接,所述控制器与所述压力传感器电连接;所述控制器用于获取所述压力传感器的压力信号,并根据所述压力信号生成补气信号,并将所述补气信号传输至所述驱动器,所述驱动器用于根据所述补气信号驱动所述三通阀连通所述压缩机和所述气罐,驱动所述第三开关阀打开,驱动所述压缩机将空气压缩后传输至所述气罐。
- 如权利要求1~3任一项所述的悬架系统,其特征在于,所述悬架组件还包括减振器,所述驱动器也与所述减振器连接,所述驱动器还用于根据所述控制器的所述控制信号控制所述减振器调节阻尼力。
- 如权利要求1~4任一项所述的悬架系统,其特征在于,所述悬架系统包括至少两个所述悬架组件,每个所述悬架组件中的所述气体弹簧连接一个所述第二开关阀。
- 如权利要求5所述的悬架系统,其特征在于,所有的所述第二开关阀为一体结构。
- 如权利要求5或6所述的悬架系统,其特征在于,每个所述悬架组件对应设置一个所述驱动器。
- 如权利要求1~7任一项所述的悬架系统,其特征在于,所述悬架系统包括四个所述悬架组件,四个所述悬架组件呈矩阵设置。
- 如权利要求1~8任一项所述的悬架系统,其特征在于,所述控制器为系统控制器、域控制器或者整车控制器。
- 一种如权利要求1~9任一项所述的悬架系统的控制方法,其特征在于,包括:接收所述高度传感器的所述高度信号;当所述高度信号小于目标高度时,控制所述第一开关阀和所述第二开关阀打开,控制所述压缩机正转驱动所述气罐中的气体流向所述气体弹簧;当所述高度信号小于所述目标高度时,控制所述第一开关阀和所述第二开关阀打开,控制所述压缩机反转驱动所述气体弹簧中的气体流向所述气罐;当所述高度信号等于所述目标高度时,控制所述第一开关阀和所述第二开关阀关闭。
- 如权利要求10所述的控制方法,其特征在于,所述压缩机还连接有第三通气管路,所述第三通气管路与外界大气连接,所述第三通气管路设置有第三开关阀;所述控制方法还包括:控制所述第一开关阀和所述第三开关阀打开,控制所述压缩机将空气压缩后传输至所述气罐。
- 如权利要求11所述的控制方法,其特征在于,所述气罐还连接有压力传感器,所述压力传感器用于检测所述气罐中的压力,所述控制方法包括:获取所述压力传感器检测的压力;当所述压力小于设定压力时,生成补气信号;根据所述补气信号控制所述第一开关阀和所述第三开关阀打开,控制所述压缩机将空气压缩后传输至所述气罐。
- 一种车辆,其特征在于,包括车身、轮轴、车轮和如权利要求1~8任一项所述的悬架系统,其中,所述车轮安装于所述轮轴,所述悬架系统安装于所述轮轴与所述车身之间。
- 如权利要求13所述的车辆,其特征在于,所述控制器为域控制器,所述车辆包括多个系统,多个所述系统中的部分所述系统共用所述域控制器。
- 如权利要求13所述的车辆,其特征在于,所述控制器为整车控制器,所述车辆还包括多个系统,所有的所述系统共用所述整车控制器。
- 如权利要求13~15任一项所述的车辆,其特征在于,所述悬架系统包括多个所述悬架组件,多个所述悬架组件与所述车辆的所述车轮一一对应设置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN202180010343.4A CN116348318A (zh) | 2021-10-22 | 2021-10-22 | 一种悬架系统及其控制方法和车辆 |
PCT/CN2021/125706 WO2023065304A1 (zh) | 2021-10-22 | 2021-10-22 | 一种悬架系统及其控制方法和车辆 |
EP21961052.4A EP4414189A1 (en) | 2021-10-22 | 2021-10-22 | Suspension system and control method thereof, and vehicle |
KR1020247016989A KR20240093862A (ko) | 2021-10-22 | 2021-10-22 | 서스펜션 시스템과 그 제어 방법, 및 차량 |
US18/641,127 US20240262150A1 (en) | 2021-10-22 | 2024-04-19 | Suspension system and control method thereof, and vehicle |
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PCT/CN2021/125706 WO2023065304A1 (zh) | 2021-10-22 | 2021-10-22 | 一种悬架系统及其控制方法和车辆 |
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US18/641,127 Continuation US20240262150A1 (en) | 2021-10-22 | 2024-04-19 | Suspension system and control method thereof, and vehicle |
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EP (1) | EP4414189A1 (zh) |
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WO (1) | WO2023065304A1 (zh) |
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2021
- 2021-10-22 EP EP21961052.4A patent/EP4414189A1/en active Pending
- 2021-10-22 KR KR1020247016989A patent/KR20240093862A/ko unknown
- 2021-10-22 CN CN202180010343.4A patent/CN116348318A/zh active Pending
- 2021-10-22 WO PCT/CN2021/125706 patent/WO2023065304A1/zh active Application Filing
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GB1165692A (en) * | 1965-07-08 | 1969-10-01 | Sec Dep For Defence London | Improvements in or relating to vehicle Suspension Systems |
US4799707A (en) * | 1987-04-14 | 1989-01-24 | Toyota Jidosha Kabushiki Kaisha | Gas suspension system for easier start-up of a compressor |
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CN111886145A (zh) * | 2018-03-28 | 2020-11-03 | 日立汽车系统株式会社 | 空气悬架系统以及相机清洗系统 |
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