Vehicle control method, device, processor and vehicle

Abstract

The present invention discloses a vehicle control method, device, processor, and vehicle. The method includes: obtaining stable state data during vehicle travel, wherein the stable state data is used to indicate the stability of the vehicle on the road; in response to the stable state data exceeding a vehicle stable state data threshold, triggering a pressure difference between two oil circuits within a hydraulic pump in the vehicle's vibration reduction system; controlling a flow channel component in the vibration reduction system to transmit a damping force corresponding to the pressure difference to a shock absorber in the vibration reduction system; and in response to the shock absorber receiving the damping force, controlling the shock absorber to reduce vehicle vibration according to the damping force. The present invention solves the technical problem of poor vibration reduction control in vehicles.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a vehicle control method, device, processor and vehicle. Background Art

[0002] In the related art, most vehicle shock absorbers use air springs for vibration reduction. However, due to the complex structure of the air springs and the need for an inflation system for air spring adjustment, there are problems of high energy consumption and impracticality. Therefore, there is still a technical problem of poor effect in controlling vehicle vibration reduction.

[0003] The above-mentioned related technologies have the technical problem of poor effect of controlling vehicle vibration reduction, and no effective solution has been proposed so far. Summary of the Invention

[0004] Embodiments of the present invention provide a vehicle control method, device, processor, and vehicle to at least solve the technical problem of poor vibration reduction effect of controlling the vehicle.

[0005] According to one aspect of an embodiment of the present invention, a vehicle control method is provided. The method may include: obtaining stable state data during vehicle travel, wherein the stable state data is used to indicate the stability of the vehicle traveling on the road; in response to the stable state data exceeding a vehicle stable state data threshold, triggering a pressure difference between two oil circuits in a hydraulic pump in a vibration damping system of the vehicle; controlling a flow channel component in the vibration damping system to transmit a damping force corresponding to the pressure difference to a shock absorber in the vibration damping system; and in response to the shock absorber receiving the damping force, controlling the shock absorber to damp the vehicle according to the damping force.

[0006] Optionally, the vibration reduction system includes at least a shock absorber, a flow channel assembly, a hydraulic pump and a gas accumulator, wherein the shock absorber is used to alleviate the impact of vibration on the vehicle, there are two non-intersecting flow channels inside the flow channel assembly for transmitting the pressure difference, the hydraulic pump is used to generate a pressure difference in the two oil circuits, and the gas accumulator is used to provide damping force for the shock absorber.

[0007] Optionally, the shock absorber includes at least a flow channel assembly connecting ring, an outer tube, an inner tube, a piston rod and a piston valve, wherein the flow channel connecting ring is used to communicate with the flow channel, the outer tube is used to deploy the coil spring and the air spring, the inner tube is deployed with a pore structure, the piston rod is used to receive the damping force of the shock absorber or hydraulic pump, and the piston valve is used to receive the pressure difference transmitted by the flow channel assembly.

[0008] Optionally, the flow channel component in the vibration reduction system is controlled to transmit the damping force corresponding to the pressure difference to the shock absorber in the vibration reduction system, including: controlling the hydraulic pump to pump oil to the two oil circuits to generate a pressure difference; controlling the flow channel component to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber.

[0009] Optionally, in response to the shock absorber receiving the damping force, the shock absorber is controlled to reduce vibration of the vehicle according to the damping force, including: generating a damping force on the piston rod based on the pressure difference between the upper and lower surfaces of the piston valve; and controlling the vehicle wheels to reduce vibration based on the damping force.

[0010] Optionally, the control flow channel assembly transmits the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber, including: separating the internal space of the oil storage cylinder of the shock absorber system through the annular hole on the flow channel connecting ring of the shock absorber and the inner cylinder of the shock absorber, wherein the size of the flow channel connecting ring increases in a step-by-step manner from top to bottom; connecting with the upper surface of the piston valve through the pore structure on the inner cylinder, and connecting with the lower surface of the piston valve through the bottom valve of the shock absorber, to obtain a pressure difference transmission model; based on the transmission model, the control flow channel assembly transmits the pressure difference to the upper and lower surfaces.

[0011] Optionally, the method may further include: in response to the hydraulic pump being in a failed state, controlling a gas accumulator of the vibration reduction system to provide a damping force for the shock absorber.

[0012] According to another aspect of an embodiment of the present invention, a vehicle control device is provided. The device may include: an acquisition unit for acquiring stable state data during vehicle travel, wherein the stable state data is used to indicate the stability of the vehicle traveling on the road; a triggering unit for triggering, in response to the stable state data exceeding a vehicle stable state data threshold, to generate a pressure difference between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle; a first control unit for controlling a flow channel component in the vibration reduction system to transmit a damping force corresponding to the pressure difference to a shock absorber in the vibration reduction system; and a second control unit for controlling the shock absorber to reduce vibration of the vehicle according to the damping force received by the shock absorber.

[0013] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device containing the computer-readable storage medium is controlled to execute the vehicle control method according to an embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, a processor is provided, wherein the processor is configured to run a program, wherein when the program is run, the vehicle control method according to an embodiment of the present invention is executed.

[0015] According to another aspect of an embodiment of the present invention, a vehicle is further provided, wherein the vehicle is configured to execute the vehicle control method according to an embodiment of the present invention.

[0016] In an embodiment of the present invention, stable state data is obtained during vehicle driving, wherein the stable state data is used to indicate the stability of the vehicle driving on the road; in response to the stable state data exceeding a stable state data threshold of the vehicle, a pressure difference is triggered between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle; a flow channel component in the vibration reduction system is controlled to transmit a damping force corresponding to the pressure difference to a shock absorber in the vibration reduction system; and in response to the shock absorber receiving the damping force, the shock absorber is controlled to reduce vibration of the vehicle according to the damping force. That is to say, when the embodiment of the present invention detects that the stable state data of the vehicle exceeds the stable state data threshold of the vehicle during driving, it can be explained that the vibration is too large and the impact on the vehicle is relatively large. At this time, a pressure difference can be generated in the two oil circuits in the hydraulic pump in the shock absorption system, and the damping force corresponding to the pressure difference can be transmitted to the shock absorber in the shock absorption system, so as to control the shock absorber to damp the vehicle according to the damping force. Considering that the hydraulic pump and the shock absorber can be connected through the flow channel component in the shock absorption system to form a closed loop, the purpose of responding to different damping force requirements of the vehicle and realizing active raising or lowering of one side of the vehicle is achieved, thereby solving the technical problem of poor effect of controlling the vehicle for vibration reduction and achieving the technical effect of improving the effect of controlling the vehicle for vibration reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a vehicle control method according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of an active vibration reduction system for a vehicle according to an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of an active shock absorber for a vehicle according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of flow channel connections in an active vibration reduction system according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic structural diagram of an active vibration absorber connected to a flow channel locking ring according to an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a small hole deployed in an inner cylinder of an active vibration absorber according to an embodiment of the present invention;

[0024] Figure 7is a schematic diagram of a vehicle control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] Example 1

[0028] According to an embodiment of the present invention, an embodiment of a vehicle control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] Figure 1 is a flow chart of a vehicle control method according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0030] Step S102 , obtaining stable state data of the vehicle during driving, wherein the stable state data is used to indicate the stability of the vehicle while driving on the road.

[0031] In the technical solution provided in the above step S102 of the present invention, during the process of driving on the road, the stable state data of the vehicle driving on the road can be collected, wherein the stable state data can be used to indicate the stability of the vehicle driving on the road, can be used to reflect the degree of impact of the uneven road surface on the vehicle on the vehicle, and is a condition for determining whether to start vibration reduction for the vehicle.

[0032] Optionally, by using sensors deployed on the vehicle to detect the degree of impact caused by road unevenness on the vehicle, the vehicle's stable state data can be collected and detected to facilitate judgment of whether the stable state data is abnormal and to determine whether the vehicle needs active vibration reduction.

[0033] Step S104 : in response to the stable state data exceeding the stable state data threshold of the vehicle, triggering a pressure difference to be generated between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle.

[0034] In the technical solution provided in the above step S104 of the present invention, after obtaining the stable state data of the vehicle during driving, the size between the stable state data and the stable state data threshold of the vehicle can be judged. If the stable state data exceeds the stable state data threshold of the vehicle, the various functions of the vehicle's vibration reduction system can be triggered to start, which is used to reduce the vibration of the vehicle. The pressure difference between the two oil circuits in the hydraulic pump in the vibration reduction system can be controlled, wherein the stable state data threshold can be a value set in advance or a value set by itself according to the actual situation of the vehicle. It should be noted that this is only an example, and no specific restrictions are placed on the setting method and value of the stable state data threshold. The vibration reduction system can also be called an active vibration reduction system. The hydraulic pump can also be called an active hydraulic pump.

[0035] Optionally, after obtaining the vehicle's stable state data, the relationship between the stable state data and a stable state data threshold can be determined. If the stable state data does not exceed the stable state data threshold, it indicates that the road surface on which the vehicle is traveling is relatively flat, resulting in a small impact on the vehicle, and vibration reduction control may not be required. If the stable state data exceeds the stable state data threshold, it indicates that the road surface on which the vehicle is traveling is uneven, resulting in a large impact on the vehicle, and vibration reduction control may be required to ensure vehicle safety during driving.

[0036] Optionally, if it is detected that the vehicle needs to perform vibration reduction control at this time, an active vibration reduction control instruction can be issued through the vehicle control component in the vehicle. Based on the active vibration reduction control instruction, the oil storage cylinder in the vibration reduction system can be controlled to pump oil into the two oil circuits in the hydraulic pump, thereby generating a pressure difference between the two oil circuits.

[0037] Step S106 , controlling the flow channel component in the vibration reduction system to transmit the damping force corresponding to the pressure difference to the vibration absorber in the vibration reduction system.

[0038] In the technical solution of the above-mentioned step S106 of the present invention, after a pressure difference is generated between the two oil circuits in the hydraulic pump, the pressure difference between the two oil circuits can be controlled by the flow channel component in the vibration reduction system to transmit the damping force corresponding to the pressure difference to the shock absorber in the vibration reduction system, wherein the shock absorber can also be called an active shock absorber.

[0039] Alternatively, the hydraulic pump can be connected to the shock absorber via a flow channel assembly, so that the pressure difference between the two oil circuits of the hydraulic pump can transmit a corresponding damping force to the shock absorber via the flow channel assembly. The pressure difference can be applied to the shock absorber via the flow channel assembly to generate a certain damping force.

[0040] In the conceptual concept of the existing active suspension system (active vibration reduction system), in order to solve the requirements of assembly, installation, maintenance, disassembly and compatibility of the active suspension, in order to solve the problems of installation and maintenance of the existing active suspension system, while being compatible with both air spring and coil spring spring arrangements to achieve the maximum possibility of structural universality, in an embodiment of the present invention, an active vibration reduction system is designed, which can connect the vibrator and the hydraulic pump through a flow channel component with a unique structure to form a closed loop, and can realize the oil circuit connection between the hydraulic pump and the shock absorber, while meeting the convenience of disassembly.

[0041] Step S108 : In response to the shock absorber receiving the damping force, controlling the shock absorber to reduce vibration of the vehicle according to the damping force.

[0042] In the technical solution of the above-mentioned step S108 of the present invention, after the control flow channel component transmits the damping force corresponding to the pressure difference to the shock absorber, when the shock absorber receives the damping force, the shock absorber can be controlled to control the vehicle according to the damping force to achieve the effect of reducing the vibration of the vehicle.

[0043] Optionally, after the shock absorber receives the damping force, the wheel side of the vehicle can be controlled to achieve active movement, thereby responding to the impact on the vehicle caused by the unevenness of the road, reducing the impact, and ensuring the driving safety of the vehicle.

[0044] In the above steps S102 to S108 of the present application, stable state data of the vehicle during driving is obtained, wherein the stable state data is used to indicate the stability of the vehicle while driving on the road; in response to the stable state data exceeding the stable state data threshold of the vehicle, a pressure difference is generated between two oil circuits in the hydraulic pump of the vehicle's shock absorption system; the flow channel component in the shock absorption system is controlled to transmit the damping force corresponding to the pressure difference to the shock absorber in the shock absorption system; in response to the shock absorber receiving the damping force, the shock absorber is controlled to damp the vehicle according to the damping force. That is to say, when the embodiment of the present invention detects that the stable state data of the vehicle exceeds the stable state data threshold of the vehicle during driving, it can be explained that the vibration is too large and the impact on the vehicle is relatively large. At this time, a pressure difference can be generated in the two oil circuits in the hydraulic pump in the shock absorption system, and the damping force corresponding to the pressure difference can be transmitted to the shock absorber in the shock absorption system, so as to control the shock absorber to damp the vehicle according to the damping force. Considering that the hydraulic pump and the shock absorber can be connected through the flow channel component in the shock absorption system to form a closed loop, the purpose of responding to different damping force requirements of the vehicle and realizing active raising or lowering of one side of the vehicle is achieved, thereby solving the technical problem of poor effect of controlling the vehicle for vibration reduction and achieving the technical effect of improving the effect of controlling the vehicle for vibration reduction.

[0045] The above method of this embodiment is further introduced below.

[0046] As an optional embodiment, the vibration reduction system includes at least a shock absorber, a flow channel assembly, a hydraulic pump and a gas accumulator, wherein the shock absorber is used to alleviate the impact of vibration on the vehicle, there are two non-intersecting flow channels inside the flow channel assembly for transmitting the pressure difference, the hydraulic pump is used to generate a pressure difference in the two oil circuits, and the gas accumulator is used to provide damping force for the shock absorber.

[0047] In this embodiment, the vibration reduction system may include at least a shock absorber, a flow channel assembly, a hydraulic pump, and a gas accumulator. The shock absorber can be used to mitigate the impact of vehicle vibration caused by uneven roads. The flow channel assembly contains two non-intersecting flow channels that can be used to transmit a pressure difference. The hydraulic pump can be used to generate a pressure difference between the two oil channels. The gas accumulator can be used to provide damping force for the shock absorber.

[0048] Optionally, the vibration reduction system may include: an active vibration absorber, a flow channel assembly, an active hydraulic pump, a gas accumulator, a flow channel locking ring, and a vibration absorber connecting fork.

[0049] Optionally, the flow channel assembly has two internal flows that do not cross each other, and there are two annular grooves in the middle, which can be connected to the flow channel of the shock absorber through the annular grooves to achieve flow communication with the shock absorber.

[0050] As an optional embodiment, the shock absorber includes at least a flow channel assembly connecting ring, an outer tube, an inner tube, a piston rod and a piston valve, wherein the flow channel connecting ring is used to communicate with the flow channel, the outer tube is used to deploy the coil spring and the air spring, the inner tube is deployed with a pore structure, the piston rod is used to receive the damping force of the shock absorber or the hydraulic pump, and the piston valve is used to receive the pressure difference transmitted by the flow channel assembly.

[0051] In this embodiment, the shock absorber may include at least a flow channel assembly connecting ring, an outer cylinder, an inner cylinder, a piston rod, and a piston valve. The flow channel connecting ring can be used to communicate with the flow channel. The outer cylinder can be used to deploy a coil spring and an air spring, and can also be referred to as an upper outer cylinder. A porous structure can be deployed on the inner cylinder. The piston rod can be used to receive the damping force of the shock absorber or hydraulic pump. The piston valve can be used to receive the pressure differential transmitted by the flow channel assembly.

[0052] Optionally, the structure of the shock absorber can be composed of an outer tube, upper and lower joints, a flow channel connecting ring, a bottom cover, an inner tube, a bottom valve, an upper cover, a piston rod, a piston valve and sealing rings at various locations.

[0053] Optionally, after the flow channel assembly and shock absorber are assembled, multiple sealing rings, for example, three, can be used to seal the annular grooves, thereby allowing the oil to flow in the respective flow channels. The flow channels are fixed by tightening the threads on the flow channel connecting ring with the flow channel locking ring. A mating boss is provided on the flow channel and the connecting ring to achieve circumferential positioning (radial positioning) of the flow channel.

[0054] Optionally, the outer tube of the shock absorber can be divided into several sections, each with its own special function. The shock absorber's force flow channel connecting ring can be connected to the shock absorber's bottom cover link, and its outer side can be matched with the flow channel assembly and fastened by a locking ring. The outer tube of the shock absorber is connected to the upper and lower joints by welding. After the upper and lower joints are welded to the outer tubes of different compatible air springs or coil springs, different spring types can be assembled. The inner sides of the upper and lower joints are processed with internal threads and sealing ring mounting grooves, and are tightened and assembled with the flow channel connecting ring. By using different outer tubes, compatibility with different suspensions can be achieved, realizing modular design and vehicle upgrades.

[0055] In an embodiment of the present invention, assembly of the shock absorber can be achieved through the detachable design of each component. The matching dimensions of the flow channel connecting ring and the flow channel assembly are stepped, i.e., the dimensions at the lower end are larger and the dimensions at the upper end are smaller. This design allows the flow channel to be assembled from top to bottom. Since the flow channel assembly and the connecting ring require high-precision matching to ensure sealing, the assembly would be difficult if the dimensions are precisely matched. Therefore, this structural design can effectively improve the technical effect of the ease of assembly.

[0056] Optionally, the shock absorber's flow channel connecting ring is equipped with two evenly spaced holes arranged in an annular pattern, with a sealing ring mounting groove inside. The sealing ring cooperates with the shock absorber's inner cylinder to separate the oil reservoir space. The upper portion of the oil reservoir can be connected to the upper portion of the piston valve via the holes in the inner cylinder, while the lower portion of the oil reservoir is connected to the lower portion of the piston valve via a bottom valve. The upper portion of the flow channel connecting ring is connected to the upper portion of the flow channel assembly, while the lower portion of the connecting ring is connected to the lower portion of the flow channel assembly. The upper and lower portions of the connecting ring are each connected to the two oil circuits of the active hydraulic pump, thereby transmitting the pressure differential.

[0057] In this embodiment of the present invention, different outer cylinders can be replaced to accommodate different spring requirements, thereby achieving the technical effect of transitioning from a coil spring to an air spring arrangement. The components of the active vibration reduction system can be flexibly disassembled and replaced, reducing maintenance costs and increasing component versatility.

[0058] As an optional embodiment, step S106 controls the flow channel component in the vibration reduction system to transmit the damping force corresponding to the pressure difference to the shock absorber in the vibration reduction system, including: controlling the hydraulic pump to pump oil to the two oil circuits to generate a pressure difference; controlling the flow channel component to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber.

[0059] In this embodiment, in the process of controlling the flow channel component in the vibration reduction system to transmit the damping force corresponding to the pressure difference to the shock absorber in the vibration reduction system, the hydraulic pump can be controlled to pump oil to the two oil circuits to generate a pressure difference, and the flow channel component can be controlled to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber.

[0060] Optionally, based on the instructions of active vibration reduction control, oil is pumped to the two oil circuits of the hydraulic pump through the oil storage cylinder in the vibration reduction system, so that a pressure difference is generated between the two oil circuits. Through the connection between the flow channel assembly and the piston valve of the shock absorber, the pressure difference can be applied to the upper and lower surfaces of the piston valve.

[0061] As an optional embodiment, step S108, in response to the shock absorber receiving the damping force, controls the shock absorber to reduce vibration of the vehicle according to the damping force, including: generating a damping force on the piston rod based on the pressure difference between the upper and lower surfaces of the piston valve; and controlling the vehicle's wheels to reduce vibration based on the damping force.

[0062] In this embodiment, when the shock absorber receives a damping force and controls the shock absorber to reduce vibration of the vehicle according to the damping force, a damping force can be generated on the piston rod based on the pressure difference received on the upper and lower surfaces of the piston valve. Based on the damping force, the wheels of the vehicle can be controlled to reduce vibration of the vehicle.

[0063] Optionally, a certain damping force is generated on the piston rod of the shock absorber through the pressure difference between the upper and lower surfaces of the piston valve. Based on the damping force, the wheel side of the vehicle can achieve active movement, thereby responding to the impact of uneven road surface on the vehicle and reducing vibration of the vehicle.

[0064] As an optional embodiment, step S106, controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber, includes: separating the internal space of the oil storage cylinder of the shock absorber system through the annular hole on the flow channel connecting ring of the shock absorber and the inner cylinder of the shock absorber, wherein the size of the flow channel connecting ring increases in a step-by-step manner from top to bottom; connecting with the upper surface of the piston valve through the pore structure on the inner cylinder, and connecting with the lower surface of the piston valve through the bottom valve of the shock absorber, to obtain a pressure difference transmission model; based on the transmission model, controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces.

[0065] In this embodiment, in the process of controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber, the internal space of the oil storage cylinder of the shock absorber system can be separated by the annular hole on the flow channel connecting ring of the shock absorber and the inner cylinder of the shock absorber, and can be connected to the upper surface of the piston valve through the pore structure on the inner cylinder, and can be connected to the lower surface of the piston valve through the bottom valve of the shock absorber, thereby obtaining a pressure difference transmission model, so that the flow channel assembly can be controlled to transmit the pressure difference to the upper and lower surfaces of the piston valve based on the transmission model, wherein the size of the flow channel connecting ring increases in a step-by-step manner from top to bottom. The transmission model can be a closed loop obtained after the relevant components in the shock absorber system for transmitting pressure difference are connected. The annular hole can be two ring-shaped evenly distributed pores.

[0066] In an embodiment of the present invention, the matching dimensions of the flow channel connecting ring and the flow channel assembly are increased in a step-by-step manner, that is, the size of the upper end is large and the size of the lower end is small. This design can make the flow channel easier to plug in when assembled from top to bottom, thereby improving the convenience of assembly.

[0067] Optionally, two evenly distributed annular holes are arranged on the flow channel connecting ring of the active shock absorber, the inner side of which is a sealing ring mounting groove. The sealing ring can cooperate with the inner tube of the active shock absorber to achieve the purpose of separating the space of the oil storage cylinder. The upper space of the oil storage cylinder can be connected to the upper part of the piston valve through the holes in the inner tube, and the lower space of the oil storage cylinder is connected to the lower part of the piston valve through the bottom valve. The upper part of the flow channel connecting ring is connected to the upper part of the flow channel assembly, and the lower part of the connecting ring is connected to the lower space of the flow channel assembly. The upper and lower parts of the connecting ring are respectively connected to the two oil circuits of the active hydraulic pump, thereby realizing the transmission of pressure difference.

[0068] As an optional embodiment, in step S108 , the method may further include: in response to the hydraulic pump being in a failed state, controlling the gas accumulator of the vibration reduction system to provide a damping force for the shock absorber.

[0069] In this embodiment, when the hydraulic pump is in a failed state, the gas accumulator of the vibration reduction system can be controlled to provide damping force for the shock absorber.

[0070] Optionally, a gas accumulator may be connected to one side of the active shock absorber to provide a basic pressure (damping force) inside the active shock absorber, so that when the hydraulic pump is detected to be in a failed state, the shock absorber still has a certain damping force.

[0071] In an embodiment of the present invention, stable state data is obtained during vehicle driving, wherein the stable state data is used to indicate the stability of the vehicle driving on the road; in response to the stable state data exceeding a stable state data threshold of the vehicle, a pressure difference is triggered between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle; a flow channel component in the vibration reduction system is controlled to transmit a damping force corresponding to the pressure difference to a shock absorber in the vibration reduction system; and in response to the shock absorber receiving the damping force, the shock absorber is controlled to reduce vibration of the vehicle according to the damping force. That is to say, when the embodiment of the present invention detects that the stable state data of the vehicle exceeds the stable state data threshold of the vehicle during driving, it can be explained that the vibration is too large and the impact on the vehicle is relatively large. At this time, a pressure difference can be generated in the two oil circuits in the hydraulic pump in the shock absorption system, and the damping force corresponding to the pressure difference can be transmitted to the shock absorber in the shock absorption system, so as to control the shock absorber to damp the vehicle according to the damping force. Considering that the hydraulic pump and the shock absorber can be connected through the flow channel component in the shock absorption system to form a closed loop, the purpose of responding to different damping force requirements of the vehicle and realizing active raising or lowering of one side of the vehicle is achieved, thereby solving the technical problem of poor effect of controlling the vehicle for vibration reduction and achieving the technical effect of improving the effect of controlling the vehicle for vibration reduction.

[0072] Example 2

[0073] The technical solutions of the embodiments of the present invention are described below with reference to preferred implementation methods.

[0074] With the rise of domestically-developed new energy vehicle companies, new chassis technologies and innovations are gradually being applied to new energy vehicles. Active suspension is a key area of ​​current suspension technology development, with mainstream automakers both domestically and internationally developing active suspension technology. However, current technologies, while generally conceptual, fail to address requirements for active suspension assembly, installation, repair, disassembly, and compatibility. Consequently, the technical challenge remains in effectively controlling and damping vehicle vibrations.

[0075] In a related technology, an active shock absorber for reducing unsprung mass is proposed. It includes an active shock absorber body, an electric hydraulic pump, an accumulator, a compression chamber oil circuit, and a recovery chamber oil circuit; the active shock absorber body is connected to the vehicle body and the suspension; one end of the compression chamber oil circuit is connected to the compression chamber of the active shock absorber body, and the other end is connected to the electric hydraulic pump; one end of the recovery chamber oil circuit is connected to the recovery chamber of the active shock absorber body, and the other end is connected to the accumulator. The present invention transfers the weight of the heaviest component on the active shock absorber, namely the electric hydraulic pump, to the sprung mass, thereby reducing the impact of the active shock absorber on the unsprung mass. In addition, the piston rod is connected to the suspension. Since the piston rod only accounts for a very small part of the weight of the active shock absorber, this method can greatly reduce the unsprung mass, thereby improving the comfort of the entire vehicle. However, there is still a technical problem of poor control of vehicle vibration reduction.

[0076] In another related technology, an active shock absorber is proposed. It includes an active shock absorber body, an electric hydraulic pump, an accumulator, a compression chamber oil circuit, and a recovery chamber oil circuit; the active shock absorber body is connected to the vehicle body and suspension; one end of the compression chamber oil circuit is connected to the compression chamber of the active shock absorber body, and the other end is connected to the electric hydraulic pump; one end of the recovery chamber oil circuit is connected to the recovery chamber of the active shock absorber body, and the other end is connected to the electric hydraulic pump and accumulator. The present invention can compensate for the shortcomings of the active shock absorber's insufficient response bandwidth, reduce the high-frequency damping force that the active shock absorber cannot respond to, and improve the high-frequency vibration comfort of the entire vehicle. However, there is still a technical problem of poor control of the vehicle's vibration reduction effect.

[0077] However, an embodiment of the present invention proposes a method for actively reducing vibration of a vehicle. When it is detected that the stable state data of the vehicle exceeds the stable state data threshold of the vehicle during driving, it can be indicated that the vibration is too large and the impact on the vehicle is large. At this time, a pressure difference can be generated in the two oil circuits in the hydraulic pump in the vibration reduction system, and the damping force corresponding to the pressure difference can be transmitted to the shock absorber in the vibration reduction system, so as to control the shock absorber to reduce vibration of the vehicle according to the damping force. Considering that the hydraulic pump and the shock absorber can be connected through the flow channel component in the vibration reduction system to form a closed loop, the purpose of responding to different damping force requirements of the vehicle and realizing active raising or lowering of one side of the vehicle is achieved, thereby solving the technical problem of poor effect of controlling the vehicle for vibration reduction and achieving the technical effect of improving the effect of controlling the vehicle for vibration reduction.

[0078] The following is a further introduction to the embodiments of the present invention.

[0079] Figure 2 Schematic diagram of an active vibration reduction system for a vehicle according to an embodiment of the present invention. Figure 2As shown, the vehicle's active vibration reduction system may include: an active shock absorber 1, a flow channel assembly 2, an active hydraulic pump 3, a gas accumulator 4, a flow channel locking ring 5, and a shock absorber connecting fork 6. The shock absorber can be used to mitigate the impact of vehicle vibration caused by uneven roads. The flow channel assembly contains two non-intersecting flow channels that can be used to transmit a pressure difference. The hydraulic pump can be used to generate a pressure difference between the two oil circuits. The gas accumulator can be used to provide damping force to the shock absorber.

[0080] Optionally, components may be deployed in the active vibration dampers of the active vibration damping system. Figure 3 is a schematic structural diagram of an active shock absorber for a vehicle according to an embodiment of the present invention. Figure 3 As shown, the active shock absorber may include an upper outer cylinder 7, upper and lower joints 8, a flow channel connecting ring 9, a bottom cover 10, an inner cylinder 11, a bottom valve 12, an upper cover 13, a piston rod 14, a piston valve 15, and sealing rings 16 at various locations. The flow channel connecting ring can be used to communicate with the flow channel. The outer cylinder can be used to deploy coil springs and air springs. A porous structure can be deployed on the inner cylinder. The piston rod can be used to receive the damping force of the shock absorber or hydraulic pump. The piston valve can be used to receive the pressure difference transmitted by the flow channel assembly. The outer cylinder can also be referred to as the upper outer cylinder.

[0081] Optionally, Figure 4 FIG. 1 is a schematic diagram of flow channel connection in an active vibration reduction system according to an embodiment of the present invention. Figure 4 As shown, the flow channel assembly has two non-intersecting internal channels, with two annular grooves in the middle. These grooves connect to the shock absorber's flow channel connecting ring, enabling flow between the active shock absorber, active hydraulic pump, and gas accumulator. After the flow channel assembly and active shock absorber are assembled, three sealing rings are used to seal the annular grooves, allowing oil to flow through the respective flow channels. The flow channels are then secured by tightening the threads on the flow channel connecting ring with the flow channel locking ring. A mating boss on the flow channel and the flow channel connecting ring ensures circumferential positioning of the flow channel.

[0082] In this embodiment, the vehicle's stable state data can be collected and detected by using sensors deployed on the vehicle to detect the degree of impact caused by road unevenness, thereby facilitating the determination of whether the stable state data is abnormal and determining whether the vehicle requires active vibration reduction.

[0083] In this embodiment, after obtaining the vehicle's stable state data, the relationship between the stable state data and the stable state data threshold can be determined. If the stable state data does not exceed the stable state data threshold, it can be indicated that the road surface on which the vehicle is traveling is relatively flat, resulting in minimal impact on the vehicle, and vibration reduction control is not required. If the stable state data exceeds the stable state data threshold, it can be indicated that the road surface on which the vehicle is traveling is uneven, resulting in significant impact on the vehicle, and vibration reduction control is required to ensure vehicle safety during driving.

[0084] Optionally, if it is detected that the vehicle needs to perform vibration reduction control at this time, an active vibration reduction control instruction can be issued through the vehicle control component in the vehicle. Based on the active vibration reduction control instruction, the oil storage cylinder in the vibration reduction system can be controlled to pump oil into the two oil circuits in the hydraulic pump, thereby generating a pressure difference between the two oil circuits.

[0085] In this embodiment, the hydraulic pump can be connected to the shock absorber via a flow channel assembly, so that the pressure difference between the two oil circuits of the hydraulic pump can transmit the corresponding damping force to the shock absorber through the flow channel assembly. The pressure difference can be applied to the shock absorber via the flow channel assembly to generate a certain damping force.

[0086] Optionally, the outer tube of the shock absorber can be divided into several sections, each with its own special function. The force flow channel connecting ring of the shock absorber can be matched with the bottom cover link of the shock absorber, and its outer side is matched with the flow channel assembly and fastened by a locking ring. The outer tube of the shock absorber is connected to the upper and lower joints by welding. After the upper and lower joints are welded with different outer tubes compatible with air springs or coil springs, different spring types can be assembled. The inner sides of the upper and lower joints are processed with internal threads and sealing ring mounting grooves, which are tightened and assembled with the flow channel connecting ring. By using different outer tubes, compatibility with different suspensions can be achieved, and modular design and vehicle upgrades can be realized.

[0087] Optionally, assembly of the shock absorber can be achieved through the detachable design of each component. The matching dimensions of the flow channel connecting ring and the flow channel assembly are stepped, that is, the dimensions at the lower end are larger and the dimensions at the upper end are smaller. This design allows the flow channel to be assembled from top to bottom. Since the flow channel assembly and the connecting ring require high-precision matching to ensure sealing, if the dimensions are precisely matched, it will lead to assembly difficulties. Therefore, this structural design can effectively improve the technical effect of the convenience of assembly.

[0088] Optionally, Figure 5 FIG. 1 is a schematic structural diagram of an active vibration absorber connected to a flow channel locking ring according to an embodiment of the present invention. Figure 5As shown, two annular evenly distributed holes are arranged on the flow channel connecting ring of the shock absorber, and a sealing ring mounting groove is provided on the inner side thereof. The sealing ring cooperates with the inner cylinder of the shock absorber to realize the spatial separation of the oil storage cylinder. Figure 6 Schematic diagram of a small hole deployed in the inner cylinder of an active vibration absorber according to an embodiment of the present invention. Figure 6 As shown, the upper space of the oil reservoir can be connected to the upper part of the piston valve through the hole in the inner cylinder, and the lower space of the oil reservoir is connected to the lower part of the piston valve through the bottom valve. The upper part of the flow channel connecting ring is connected to the upper part of the flow channel assembly, and the lower part of the connecting ring is connected to the lower space of the flow channel assembly. The upper and lower parts of the connecting ring are respectively connected to the two oil circuits of the active hydraulic pump, thereby realizing the transmission of pressure difference.

[0089] Alternatively, different outer cylinders can be replaced to accommodate different spring requirements, enabling the transition from a coil spring to an air spring configuration. Components in the active vibration reduction system can be flexibly disassembled and replaced, reducing maintenance costs and increasing component versatility.

[0090] Optionally, based on the instructions of active vibration reduction control, oil is pumped to the two oil circuits of the hydraulic pump through the oil storage cylinder in the vibration reduction system, so that a pressure difference is generated between the two oil circuits. Through the connection between the flow channel assembly and the piston valve of the shock absorber, the pressure difference can be applied to the upper and lower surfaces of the piston valve.

[0091] Optionally, a certain damping force is generated on the piston rod of the shock absorber through the pressure difference between the upper and lower surfaces of the piston valve. Based on the damping force, the wheel side of the vehicle can achieve active movement, thereby responding to the impact of uneven road surface on the vehicle and reducing vibration of the vehicle.

[0092] Optionally, the matching size of the flow channel connecting ring and the flow channel assembly is increased in a step-by-step manner, that is, the size of the upper end is large and the size of the lower end is small. This design can make the flow channel easier to plug in when assembling from top to bottom, thereby improving the convenience of assembly.

[0093] Optionally, a gas accumulator may be connected to one side of the active shock absorber to provide a basic damping force inside the active shock absorber, so that when the hydraulic pump is detected to be in a failed state, the shock absorber still has a certain damping force.

[0094] When the embodiment of the present invention detects that the stable state data of the vehicle exceeds the stable state data threshold of the vehicle during driving, it can be indicated that the vibration is too large and the impact on the vehicle is relatively large. At this time, a pressure difference can be generated in the two oil circuits in the hydraulic pump in the shock absorption system, and the damping force corresponding to the pressure difference can be transmitted to the shock absorber in the shock absorption system, so as to control the shock absorber to reduce the vibration of the vehicle according to the damping force. Considering that the hydraulic pump and the shock absorber can be connected through the flow channel component in the shock absorption system to form a closed loop, the purpose of responding to different damping force requirements of the vehicle and realizing active raising or lowering of one side of the vehicle is achieved, thereby solving the technical problem of poor effect of controlling the vehicle for vibration reduction and achieving the technical effect of improving the effect of controlling the vehicle for vibration reduction.

[0095] Example 3

[0096] According to an embodiment of the present invention, a vehicle control device is further provided. It should be noted that the vehicle control device can be used to execute the vehicle control method in Example 1.

[0097] Figure 7 is a schematic diagram of a vehicle control device according to an embodiment of the present invention. Figure 7 As shown, the vehicle control device 700 may include: an acquisition unit 702 , a triggering unit 704 , a first control unit 706 and a second control unit 708 .

[0098] The acquisition unit 702 is used to acquire stable state data during the vehicle's driving process, wherein the stable state data is used to represent the stability of the vehicle while driving on the road.

[0099] The triggering unit 704 is configured to trigger the generation of a pressure difference between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle in response to the stable state data exceeding a stable state data threshold of the vehicle.

[0100] The first control unit 706 is used to control the flow channel component in the vibration reduction system to transmit the damping force corresponding to the pressure difference to the shock absorber in the vibration reduction system.

[0101] The second control unit 708 is configured to control the shock absorber to reduce vibration of the vehicle according to the damping force in response to the shock absorber receiving the damping force.

[0102] Optionally, the first control unit 706 may include: a first control module for controlling the hydraulic pump to pump oil to the two oil circuits to generate a pressure difference; and a second control module for controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the piston valve of the shock absorber.

[0103] Optionally, the second control unit 708 may include: a generating module for generating a damping force on the piston rod based on the pressure difference between the upper and lower surfaces of the piston valve; and a third control module for controlling the wheels of the vehicle to reduce vibration based on the damping force.

[0104] Optionally, the second control module may include: a separation sub-module, used to separate the internal space of the oil storage cylinder of the shock absorber system through the annular hole on the flow channel connecting ring of the shock absorber and the inner tube of the shock absorber, wherein the size of the flow channel connecting ring is stepped from top to bottom; a connection sub-module, used to connect with the upper surface of the piston valve through the pore structure on the inner tube, and to connect with the lower surface of the piston valve through the bottom valve of the shock absorber to obtain a pressure difference transmission model; a control sub-module, used to control the flow channel assembly to transmit the pressure difference to the upper and lower surfaces based on the transmission model.

[0105] Optionally, the device may further include: a fourth control module, configured to control the gas accumulator of the vibration reduction system to provide a damping force for the shock absorber in response to the hydraulic pump being in a failed state.

[0106] In an embodiment of the present invention, stable state data of a vehicle during driving is acquired through an acquisition unit, wherein the stable state data is used to indicate the stability of the vehicle while driving on the road; a triggering unit is used to trigger a pressure difference between two oil circuits in a hydraulic pump in a shock absorbing system of the vehicle in response to the stable state data exceeding a stable state data threshold of the vehicle; a first control unit is used to control a flow channel component in the shock absorbing system to transmit a damping force corresponding to the pressure difference to a shock absorber in the shock absorbing system; and a second control unit is used to control the shock absorber to damp the vehicle according to the damping force in response to the shock absorber receiving the damping force, thereby solving the technical problem of poor effect of controlling the vehicle for shock absorption and achieving the technical effect of improving the effect of controlling the vehicle for shock absorption.

[0107] Example 4

[0108] According to an embodiment of the present invention, a computer-readable storage medium is further provided. The storage medium includes a stored program, wherein the program executes the vehicle control method described in Example 1.

[0109] Example 5

[0110] According to an embodiment of the present invention, a processor is further provided, which is used to run a program, wherein the vehicle control method described in Example 1 is executed when the program is run.

[0111] Example 6

[0112] According to an embodiment of the present invention, a vehicle is further provided. The vehicle is used to execute the vehicle control method according to the embodiment of the present invention.

[0113] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0114] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0115] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0116] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0117] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0118] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0119] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A vehicle control method, characterized in that: include: Acquiring stable state data during vehicle driving, wherein the stable state data is used to indicate a stable condition of the vehicle driving on the road; In response to the steady-state data exceeding a steady-state data threshold of the vehicle, triggering a pressure difference to be generated between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle, wherein the vibration reduction system comprises at least a shock absorber, a flow channel assembly, the hydraulic pump, a gas accumulator, and an oil storage cylinder, and the shock absorber comprises at least a flow channel connecting ring, an outer cylinder, an inner cylinder, a bottom valve, a piston rod, and a piston valve; controlling the flow channel assembly to transmit the damping force corresponding to the pressure difference to the shock absorber; In response to the shock absorber receiving the damping force, controlling the shock absorber to reduce vibration of the vehicle according to the damping force; Controlling the flow channel assembly to transmit the damping force corresponding to the pressure difference to the shock absorber includes: controlling the hydraulic pump to pump oil to the two oil circuits to generate the pressure difference; controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the piston valve; Controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the shock absorber piston valve includes: separating the internal space of the oil storage cylinder through the annular hole on the flow channel connecting ring and the inner cylinder; connecting the pore structure on the inner cylinder to the upper surface of the piston valve and connecting the bottom valve to the lower surface of the piston valve to obtain a transmission model of the pressure difference; and controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces based on the transmission model; In response to the shock absorber receiving the damping force, the shock absorber is controlled to reduce vibration of the vehicle according to the damping force, including: generating the damping force on the piston rod based on the pressure difference between the upper and lower surfaces; and controlling the wheels of the vehicle to reduce vibration based on the damping force.

2. The method according to claim 1, characterized in that The shock absorber is used to alleviate the impact of vibration on the vehicle. There are two non-intersecting flow channels inside the flow channel assembly for transmitting the pressure difference. The hydraulic pump is used to generate the pressure difference in the two oil circuits. The gas accumulator is used to provide damping force for the shock absorber.

3. The method according to claim 2, characterized in that The flow channel connecting ring is used to communicate with the flow channel, the outer cylinder is used to deploy the coil spring and the air spring, the inner cylinder is deployed with a pore structure, the piston rod is used to receive the damping force of the shock absorber or the hydraulic pump, and the piston valve is used to receive the pressure difference transmitted by the flow channel assembly.

4. The method according to claim 1, wherein The size of the flow channel connecting ring increases in a step-by-step manner from top to bottom.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: In response to the hydraulic pump being in a failed state, a gas accumulator of the vibration reduction system is controlled to provide the damping force to the shock absorber.

6. A vehicle control device, characterized in that: The device comprises: an acquiring unit, configured to acquire stable state data during vehicle driving, wherein the stable state data is used to represent a stable condition of the vehicle driving on the road; a triggering unit, configured to trigger, in response to the stable state data exceeding a stable state data threshold of the vehicle, generating a pressure difference between two oil circuits in a hydraulic pump in a vibration reduction system of the vehicle, wherein the vibration reduction system comprises at least a shock absorber, a flow channel assembly, the hydraulic pump, a gas accumulator, and an oil storage cylinder, and the shock absorber comprises at least a flow channel connecting ring, an outer cylinder, an inner cylinder, a bottom valve, a piston rod, and a piston valve; a first control unit, configured to control the flow channel assembly to transmit the damping force corresponding to the pressure difference to the shock absorber; a second control unit, configured to control the shock absorber to reduce vibration of the vehicle according to the damping force in response to the shock absorber receiving the damping force; The first control unit is configured to perform the following steps to control the transmission of the damping force to the shock absorber: controlling the hydraulic pump to pump oil to the two oil circuits to generate the pressure difference; controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces of the piston valve; The first control unit is configured to perform the following steps to transmit the pressure difference to the upper and lower surfaces: partitioning the internal space of the oil storage cylinder through the annular hole on the flow channel connecting ring and the inner cylinder; connecting the pore structure on the inner cylinder to the upper surface of the piston valve, and connecting the bottom valve to the lower surface of the piston valve, to obtain a transmission model of the pressure difference; and controlling the flow channel assembly to transmit the pressure difference to the upper and lower surfaces based on the transmission model; The second control unit is configured to perform the following steps to reduce vibration of the vehicle: generating the damping force on the piston rod based on the pressure difference between the upper and lower surfaces; and controlling the wheels of the vehicle to reduce vibration based on the damping force.

7. A processor, characterized in that: The processor is configured to run a program, wherein the program executes the method according to any one of claims 1 to 5 when run by the processor.

8. A vehicle, characterized in that: Used to perform the method according to any one of claims 1 to 5.

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