Vibration reduction assembly, suspension device and vehicle

Abstract

The invention discloses a vibration reduction assembly, a suspension device and a vehicle. The vibration reduction assembly comprises a vibration reduction part, a fluid pump and a motor, the vibration reduction part comprises a cavity and a piston piece, an inner cavity is formed in the cavity, at least part of the piston piece is movably attached to the inner side wall of the inner cavity and divides the inner cavity into a first cavity and a second cavity, the fluid pump communicates with the first cavity and the second cavity, and the motor is in transmission connection with the fluid pump. The fluid pump can drive the motor through fluid flowing through the fluid pump, and / or the motor can drive the fluid pump to drive the fluid in the fluid pump to flow. According to the vibration reduction assembly, the piston piece can do piston motion in the inner cavity, so that fluid is pressed to react on the piston piece, and damping vibration reduction is achieved. The fluid can drive the motor to rotate when flowing through the fluid pump, the motor can convert kinetic energy of the fluid into electric energy, and energy recovery is achieved. Damping vibration attenuation and energy recovery can be independently controlled and decoupled and can also be mutually coordinated and matched, and the applicability can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle vibration reduction, and in particular to a vibration reduction component, a suspension device and a vehicle. Background Art

[0002] When a vehicle is driving, the tires will be subject to vibration from the road. The shock absorber can absorb the vibration of the vehicle to achieve a vibration reduction effect. The vibration absorbed by the shock absorber will be converted from mechanical energy to heat energy and dissipated through the outer cylinder of the shock absorber.

[0003] With the popularization of electric vehicles and the continuous demand for improving the range of electric vehicles, the research on energy recovery of shock absorbers is gradually deepening, but currently it is mainly focused on the research of brake energy recovery, and the research on vibration energy of suspension systems is relatively lagging behind. Summary of the invention

[0004] The present invention provides a vibration reduction assembly, a suspension device and a vehicle to solve at least one of the above-mentioned technical problems.

[0005] A vibration reduction assembly of the present invention comprises:

[0006] A vibration damping part, the vibration damping part comprises a cavity and a piston member, the cavity forms an inner cavity, at least a portion of the piston member movably fits an inner side wall of the inner cavity and divides the inner cavity into a first cavity and a second cavity;

[0007] a fluid pump, the fluid pump communicating the first chamber with the second chamber, and;

[0008] A motor, the motor being drivingly connected to the fluid pump;

[0009] The vibration reduction assembly is configured to enable the fluid pump to drive the motor through the fluid flowing through the fluid pump, and / or to enable the motor to drive the fluid pump to drive the fluid in the fluid pump to flow.

[0010] In the above-mentioned vibration reduction assembly, when the vibration reduction part is vibrated, the piston member can perform piston movement in the inner cavity so that a stroke pressure difference is generated between the first cavity and the second cavity, and the fluid in the inner cavity will be pressurized and flow between the first cavity and the second cavity, which can produce a damping effect on the piston member through the fluid, thereby achieving damping vibration reduction. When the fluid flows through the fluid pump, it can drive the motor to rotate, and the motor can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, or they can be coordinated with each other, which is conducive to improving applicability.

[0011] In some embodiments, the fluid pump is located outside the vibration reduction part, and the motor is located outside the vibration reduction part. This is beneficial to increase the length of the vibration reduction part and facilitate the vibration reduction assembly to match more usage scenarios.

[0012] In some embodiments, the working mode of the shock absorbing assembly includes: one or at least two of an active working mode, a passive working mode and an energy recovery working mode.

[0013] In some embodiments, the motor is connected to a power supply unit of the vibration reduction assembly, and the vibration reduction assembly has an active working mode;

[0014] In the active working mode, the motor is configured to drive the fluid pump through the energy supply unit, thereby driving the fluid to flow into the first cavity or the second cavity so that the piston member moves relative to the cavity. In this way, the effect of active vibration reduction can be achieved.

[0015] In some embodiments, the vibration reduction assembly has a passive working mode, and the vibration reduction assembly includes at least one throttle valve, and the at least one throttle valve connects the first chamber and the second chamber;

[0016] In the passive working mode, the fluid pump is configured to be sealed with the first chamber and the second chamber respectively, so that the fluid flows between the first chamber and the second chamber through the at least one throttle valve, and the at least one throttle valve is used to adjust the flow rate of the fluid, thereby adjusting the damping force applied to the piston member. In this way, the effect of active vibration reduction can be achieved.

[0017] In certain embodiments, the vibration reduction assembly has an energy recovery operating mode;

[0018] The vibration reduction assembly includes a relief valve and a throttle valve, one end of the relief valve is connected to one of the first chamber and the second chamber, the other end of the relief valve is connected to the fluid pump, and the throttle valve connects the first chamber and the second chamber.

[0019] In the energy recovery working mode, the vibration reduction assembly is configured to coordinately adjust the overflow pressure of the overflow valve and the opening of the throttle valve to adjust the ratio of the fluid in one of the first chamber and the second chamber connected to the overflow valve flowing through the fluid pump;

[0020] The proportion of the fluid flowing through the fluid pump corresponds to the degree of energy recovery of the motor. In this way, both energy recovery and damping vibration reduction effects can be achieved.

[0021] In some embodiments, the upper limit of the overflow pressure of the overflow valve is determined according to the pressure of the piston member compressing the fluid in one of the first chamber and the second chamber to which the overflow valve is connected. In this way, a certain energy recovery effect can be ensured.

[0022] In certain embodiments, the vibration reduction assembly includes a liquid storage container, the liquid storage container communicating with the first chamber and the second chamber;

[0023] The liquid storage container is used to replenish the fluid to the first chamber and store at least part of the fluid flowing out of the first chamber, and the volume of the first chamber when the piston member is in the initial position is larger than the volume of the second chamber when the piston member is in the initial position, or

[0024] The liquid storage container is used to replenish the fluid to the second chamber and store at least part of the fluid flowing out of the second chamber, and the volume of the second chamber when the piston is in the initial position is larger than the volume of the first chamber when the piston is in the initial position. In this way, it is beneficial to ensure the damping effect achieved by the fluid.

[0025] A suspension device of the present invention is used for a vehicle, and the suspension device comprises:

[0026] suspension controller, and;

[0027] The vibration damping assembly described in any of the above embodiments comprises a plurality of valve bodies, and the suspension controller is configured to control the plurality of valve bodies so that the fluid pump can drive the motor through the fluid flowing through the fluid pump, and / or so that the motor can drive the fluid pump to drive the fluid in the fluid pump to flow.

[0028] In the above suspension device, when the damping part is vibrated, the piston member can perform piston movement in the inner cavity so that a stroke pressure difference is generated between the first cavity and the second cavity, and the fluid in the inner cavity will be pressurized and flow between the first cavity and the second cavity, which can produce a damping effect on the piston member through the fluid, thereby achieving damping vibration reduction. When the fluid flows through the fluid pump, it can drive the motor to rotate, and the motor can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, or they can be coordinated with each other, which is conducive to improving applicability.

[0029] In some embodiments, the vibration damping assembly has at least two working modes, and the suspension controller is configured to control a part of the plurality of valve bodies to be connected and another part to be closed according to driving information of the vehicle, so that the vibration damping assembly is in one of the working modes.

[0030] In some embodiments, the driving information includes at least one of the following:

[0031] Road surface signal, driving mode signal, suspension acceleration signal, suspension displacement signal, vehicle acceleration signal, vehicle speed signal, steering wheel angle signal, battery charge signal. In this way, the timing of damping vibration reduction and energy recovery can be determined, which is conducive to improving applicability.

[0032] A vehicle according to an embodiment of the present invention comprises:

[0033] The vibration reduction assembly and / or suspension device described in any one of the above embodiments.

[0034] In the above-mentioned vehicle, when the shock absorbing part is vibrated, the piston member can perform piston movement in the inner cavity so that a stroke pressure difference is generated between the first cavity and the second cavity. The fluid in the inner cavity will be pressurized and flow between the first cavity and the second cavity, and the fluid can produce a damping effect on the piston member to achieve damping vibration reduction. When the fluid flows through the fluid pump, it can drive the motor to rotate, and the motor can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, and can also be coordinated with each other, which is conducive to improving applicability.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 is a schematic structural diagram of a vibration reduction assembly according to an embodiment of the present invention;

[0038] Figure 2 is a schematic structural diagram of a vibration reduction assembly in an active working mode according to an embodiment of the present invention;

[0039] Figure 3 is a schematic structural diagram of a vibration reduction assembly in a passive working mode according to an embodiment of the present invention;

[0040] Figure 4 is a schematic structural diagram of a vibration reduction assembly in an energy recovery working mode according to an embodiment of the present invention;

[0041] Figure 5 It is another structural schematic diagram of the vibration reduction assembly in the energy recovery working mode according to the embodiment of the present invention.

[0042] Description of main component reference numerals:

[0043] Vibration reduction assembly 100;

[0044] Piston rod 1, first chamber 2, second chamber 3, chamber body 4, fluid pump 5, motor 6;

[0045] A first solenoid valve 7, a second solenoid valve 8, a third solenoid valve 9, a fourth solenoid valve 10, a fifth solenoid valve 13, and a sixth solenoid valve 16;

[0046] A first one-way valve 11, a second one-way valve 12, a third one-way valve 14, and a fourth one-way valve 15;

[0047] Storage container 17, piston 18, wheel connecting part 19. DETAILED DESCRIPTION

[0048] In the description of the present invention, some of the disclosed contents have been shown in the accompanying drawings accordingly, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The contents described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] In the description of the present invention, many different contents or examples are disclosed to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the description of the present invention, it should be understood that the terms used to indicate orientation or positional relationships (such as "top", "bottom", "inside", "outside", etc.) are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and facilitating the understanding of the corresponding implementation methods, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to indicate orientation or positional relationships cannot be understood as limitations on the present invention.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the related field, the tires will be subjected to vibrations from the road surface, and transmit the vibrations and loads to the vehicle body through the suspension system. When the suspension moves up and down, the oil in the shock absorber also moves back and forth in the upper and lower cavities. When the oil flows through the damping valve plate, the mechanical energy can be converted into heat energy and dissipated through the outer cylinder of the shock absorber.

[0055] With the popularization of electric vehicles and the continuous increase in the demand for electric vehicle range, the research on energy recovery of shock absorbers is gradually deepening. However, the current research is mainly focused on brake energy recovery, and the research on vibration energy of suspension systems is relatively lagging behind. By recovering the vibration energy of the suspension, the economy can be improved.

[0056] In the related art, the hydraulic pump and generator are integrated into the shock absorber. When the shock absorber is stretched or compressed, a travel pressure difference is generated in the internal chamber, causing high-pressure oil to enter the hydraulic pump, drive the generator connected to the pump to generate electricity, and transmit it through the wire arranged in the hollow piston rod. However, this makes it difficult to achieve a good decoupling of energy recovery and damping force control, the working mode is single, and comfort and energy recovery are difficult to coordinate and control, making the applicability low.

[0057] Please refer to Figure 1 A vibration reduction assembly 100 according to an embodiment of the present invention may include a vibration reduction part, a fluid pump 5 and a motor 6 .

[0058] The vibration reduction part may include a cavity 4 and a piston. The cavity 4 may be formed with an inner cavity. At least part of the piston may movably fit the inner side wall of the inner cavity and may separate the inner cavity into a first cavity 2 and a second cavity 3. The first cavity 2 and the second cavity 3 may be closed to each other.

[0059] exist Figure 1 The A1 direction and the A2 direction may be directions in which the vibration reduction part is extended. The piston member may include a piston rod 1 and a piston head 18. The piston rod 1 may pass through an inner cavity, so that one end of the piston rod 1 may be located outside the cavity 4 and the other end may be located inside the cavity 4.

[0060] The piston head 18 may be disposed at one end of the piston located in the cavity 4. The inner cavity may be formed by extending along the A1 direction and the A2 direction. The normal direction of the inner side wall of the inner cavity may be perpendicular to the A1 direction and the A2 direction. Figure 1 In the figure, the piston head 18 is located in the inner cavity, and the surface formed by the piston head 18 around the A1 direction and the A2 direction can be correspondingly fitted and abutted against the inner wall of the inner cavity, so that the inner cavity can be divided into a first cavity 2 and a second cavity 3 by the piston head 18.

[0061] Since the piston head 18 and the inner wall of the inner cavity can fit tightly, the first cavity 2 and the second cavity 3 can be sealed off from each other in the inner cavity. In other words, the fluid in the first cavity 2 will be blocked by the piston head 18 and cannot flow into the second cavity 3 in the inner cavity, and the fluid in the second cavity 3 will also be blocked by the piston head 18 and cannot flow into the first cavity 2 in the inner cavity.

[0062] Moreover, the piston member can move along the A1 direction and the A2 direction, so that the piston head 18 can be driven to move along the A1 direction and the A2 direction, so that the piston head 18 can perform piston motion in the inner cavity.

[0063] Both the first chamber 2 and the second chamber 3 can contain fluid. When the piston head 18 performs piston motion, it can push the fluid in the first chamber 2 or the second chamber 3, so that the fluid can be driven to flow out from the first chamber 2 or the second chamber 3. The piston head 18 needs to do work on the fluid to push the fluid, thereby generating a reverse force on the piston head 18, which can have a certain damping effect on the piston head 18; when the fluid is flowing, if it is obstructed (such as the flow channel becomes narrower and the flow rate is reduced), the force of the obstructed fluid will also be transmitted to the piston head 18 through the fluid, which can also have a certain damping effect. The fluid can be oil. Specifically, the fluid needs to have good viscosity and sufficient fluidity so that it can provide a certain damping and vibration reduction effect in time during actual application.

[0064] The fluid pump 5 may include a pump shaft (not shown). A pump chamber (not shown) may be formed in the fluid pump 5. The fluid pump 5 may be connected to the first chamber 2 and the second chamber 3 through the pump chamber. One end of the pump shaft may be located in the pump chamber. One end of the pump shaft located in the pump chamber may be provided with blades, and the fluid may push the blades to drive the pump shaft to rotate when flowing, and the pump shaft may also drive the blades to move when rotating to allow the fluid to flow. The fluid pump 5 may be a bidirectional hydraulic pump.

[0065] The vibration reduction assembly 100 can achieve the effects of active vibration reduction and passive vibration reduction. During active vibration reduction, the motor 6 can drive the fluid pump 5, which can rotate the pump shaft of the fluid pump, so that the fluid can be driven to flow to the first chamber 2 or the second chamber 3. Since the inflow of the fluid will push the piston to move, the force of the fluid pushing the piston and the force of the vibration reduction assembly 100 on the piston caused by vibration can achieve a vibration reduction effect. During passive vibration reduction, the vibration reduction assembly 100 is vibrated and generates a force on the piston, and the force on the piston is transmitted to the fluid, and the fluid can generate a reverse force on the piston, thereby achieving a vibration reduction effect.

[0066] The moving direction of the piston relative to the cavity 4 may correspond to the flow direction of the fluid when it flows through the pump cavity. Specifically, the fluid pump 5 may be provided with two openings connected to the pump cavity. The pump cavity may be connected to the first cavity 2 through one of the openings, and to the second cavity 3 through the other opening. Figure 1 , directions A3 and A4 may be directions in which the fluid flows through the pump chamber. When the piston head 18 compresses the first chamber 2 along the direction A1, the fluid in the first chamber 2 will flow out of the first chamber 2, and can flow into and out of the pump chamber along the direction A4, and finally flow into the second chamber 3. When the piston head 18 compresses the second chamber 3 along the direction A2, the fluid in the second chamber 3 will flow out of the second chamber 3, and can flow into and out of the pump chamber along the direction A3, and finally flow into the first chamber 2.

[0067] When the piston head 18 compresses one of the first chamber 2 and the second chamber 3, the volume of the other one of the first chamber 2 and the second chamber 3 will increase accordingly, so that the fluid can flow into the other one of the first chamber 2 and the second chamber 3. In this way, no matter whether the piston head 18 compresses the first chamber 2 or the second chamber 3, it can be affected by the damping effect generated by the fluid, which can help to provide corresponding damping effect when the piston member performs continuous directional changes, thereby ensuring the damping and vibration reduction effect of the vibration reduction part.

[0068] Moreover, when the fluid flows through the pump chamber, it can drive the part of the pump shaft located in the pump chamber to perform corresponding activities. This activity of the pump shaft can be presented as the rotation of the pump shaft after being driven.

[0069] The vibration reduction assembly 100 is configured to enable the fluid pump 5 to drive the motor 6 through the fluid flowing through the fluid pump 5 , and also to enable the motor 6 to drive the fluid pump 5 to drive the fluid in the fluid pump 5 to flow.

[0070] Specifically, the motor 6 may include a motor shaft (not shown). The motor shaft may be connected to the other end of the pump shaft, so that the motor 6 can be connected to the fluid pump 5. The motor 6 may be a bidirectional motor 6, or in other words, the motor 6 may have the ability to rotate forward and reverse.

[0071] exist Figure 1 In the embodiment, the pump shaft and the motor shaft can be connected to each other so that they can rotate along the same axis, or the rotation of the pump shaft can be transmitted to the motor shaft so that the motor shaft can also rotate accordingly. The connection between the pump shaft and the motor shaft can be a rigid shaft connection.

[0072] When the fluid flows through the fluid pump and drives the pump shaft to rotate, the motor shaft can also rotate to drive the motor 6, and the motor 6 can convert the kinetic energy of the motor shaft rotation into electrical energy, and transmit the electrical energy to the corresponding energy storage structure for storage or electricity accumulation. In some cases, the flow of the fluid can be caused by the piston head 18 compressing the first chamber 2 or the second chamber 3, so the kinetic energy of the piston head 18 can be indirectly converted into electrical energy, thereby achieving the effect of energy recovery.

[0073] On the basis of the above, the piston compresses the first chamber 2 or the second chamber 3 and is affected by the damping effect generated by the fluid. The fluid is driven by the piston to flow, so that the motor 6 can convert the kinetic energy of the fluid flow into electrical energy to achieve the effect of energy recovery. In these processes, damping and energy recovery are mainly achieved through fluid, and the vibration reduction unit can be set independently of the fluid pump 5 and the motor 6, so that the structure for achieving damping and vibration reduction and the structure for achieving energy recovery are independent of each other, which is conducive to the decoupling of the two parts of the structure. The synchronous realization of damping and vibration reduction and energy recovery can also be achieved through the action of the fluid on the vibration reduction unit and the fluid pump 5 respectively.

[0074] In the above-mentioned vibration reduction assembly 100, when the vibration reduction part is vibrated, the piston member can perform piston movement in the inner cavity so that a stroke pressure difference is generated between the first cavity 2 and the second cavity 3, and the fluid in the inner cavity will be pressurized and flow between the first cavity 2 and the second cavity 3, which can produce a damping effect on the piston member through the fluid, thereby achieving damping vibration reduction. When the fluid flows through the fluid pump 5, it can drive the motor 6 to rotate, and the motor 6 can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, and can also be coordinated with each other, which is conducive to improving applicability.

[0075] exist Figure 1In the embodiment, the vibration reduction assembly 100 may include a first control pipeline. The first control pipeline may connect the first chamber 2 and the fluid pump 5. The first control pipeline may control the pipeline connection between the first chamber 2 and the fluid pump 5 so that the fluid flows between the first chamber 2 and the fluid pump 5 through the first control pipeline. The first control pipeline may control the pipeline between the first chamber 2 and the fluid pump 5 to be shut off so as to block the flow of the fluid between the first chamber 2 and the fluid pump 5. Figure 1 In the example, the first control line can be represented as M1.

[0076] The first control line may include at least one of a first solenoid valve 7 and a second solenoid valve 8. Figure 1 In the embodiment, the first control pipeline may have two branches connecting the first chamber 2 and the fluid pump 5 , one of the two branches may be controlled on and off by the first solenoid valve 7 , and the other of the two branches may be controlled on and off by the second solenoid valve 8 .

[0077] The first solenoid valve 7 may have an off state and a plurality of different overflow states. The first solenoid valve 7 may completely shut off the branch in which it is located in the off state. Different overflow states of the first solenoid valve 7 may have corresponding overflow pressures. When the pressure generated by the fluid squeezing the first solenoid valve 7 is less than the overflow pressure corresponding to the overflow state, the first solenoid valve 7 may block the passage of the fluid flowing along the branch in which the first solenoid valve 7 is located. When the pressure generated by the fluid squeezing the first solenoid valve 7 is greater than the overflow pressure corresponding to the overflow state, the first solenoid valve 7 will connect the branch in which it is located so that the fluid can flow along the branch in which the first solenoid valve 7 is located. The first solenoid valve 7 may be an overflow valve.

[0078] The second solenoid valve 8 can have a connected state and a closed state. The second solenoid valve 8 can completely connect the branch where it is located in the connected state, and can completely close the branch where it is located in the closed state. The second solenoid valve 8 can be a two-position two-way solenoid valve.

[0079] exist Figure 1 In the embodiment, when the first control pipeline includes the first solenoid valve 7 and the second solenoid valve 8, the first control pipeline can control the first solenoid valve 7 to enter a corresponding overflow state, and can control the second solenoid valve 8 to enter a connected state. In this way, when the pressure of the fluid is relatively low, the fluid can flow along the branch where the second solenoid valve 8 is located. When the pressure of the fluid is relatively high, the fluid can flow along the branch where the first solenoid valve 7 and the branch where the second solenoid valve 8 are located, respectively. In this way, when the fluid generates sufficient pressure in the pipeline, the pipeline, valves and other components will not be damaged due to excessive pressure.

[0080] In addition, the first control pipeline can control the first solenoid valve 7 to enter one of the overflow states, and can control the second solenoid valve 8 to enter the shut-off state, so that the flow rate of the fluid entering the fluid pump 5 from the first chamber 2 can be controlled to adjust the degree of energy recovery.

[0081] exist Figure 1 In the embodiment, the vibration reduction assembly 100 may include a second control pipeline. The second control pipeline may connect the second chamber 3 and the fluid pump 5. The second control pipeline may control the pipeline connection between the second chamber 3 and the fluid pump 5 so that the fluid flows between the second chamber 3 and the fluid pump 5 through the second control pipeline. The second control pipeline may control the pipeline between the second chamber 3 and the fluid pump 5 to be shut off so as to block the flow of the fluid between the second chamber 3 and the fluid pump 5. Figure 1 In the example, the second control line can be represented as M2.

[0082] The second control line may include at least one of a third solenoid valve 9 and a fourth solenoid valve 10. Figure 1 In the embodiment, the second control pipeline may have two branches connecting the second chamber 3 and the fluid pump 5 , one of the two branches may be controlled on and off by the third solenoid valve 9 , and the other of the two branches may be controlled on and off by the fourth solenoid valve 10 .

[0083] The third solenoid valve 9 can have an off state and a plurality of different overflow states. The third solenoid valve 9 can completely shut off the branch where it is located in the off state. Different overflow states of the third solenoid valve 9 can have corresponding overflow pressures. When the pressure generated by the fluid squeezing the third solenoid valve 9 is less than the overflow pressure corresponding to the overflow state, the third solenoid valve 9 can block the passage of the fluid flowing along the branch where the third solenoid valve 9 is located. When the pressure generated by the fluid squeezing the third solenoid valve 9 is greater than the overflow pressure corresponding to the overflow state, the third solenoid valve 9 will connect the branch where it is located so that the fluid can flow along the branch where the third solenoid valve 9 is located. The third solenoid valve 9 can be an overflow valve.

[0084] The fourth solenoid valve 10 can have a connected state and a closed state. The fourth solenoid valve 10 can completely connect the branch where it is located in the connected state, and can completely close the branch where it is located in the closed state. The fourth solenoid valve 10 can be a two-position two-way solenoid valve.

[0085] exist Figure 1In the embodiment, when the second control pipeline includes the third solenoid valve 9 and the fourth solenoid valve 10, the second control pipeline can control the third solenoid valve 9 to enter a corresponding overflow state, and can control the fourth solenoid valve 10 to enter a connected state, so that when the pressure of the fluid is relatively low, the fluid can flow along the branch where the fourth solenoid valve 10 is located, and when the pressure of the fluid is relatively high, the fluid can flow along the branch where the third solenoid valve 9 is located and the branch where the fourth solenoid valve 10 is located, respectively, so that when the fluid generates sufficient pressure in the pipeline, the pipeline, valves and other components will not be damaged due to excessive pressure.

[0086] In addition, the second control pipeline can control the third solenoid valve 9 to enter one of the overflow states, and can control the fourth solenoid valve 10 to enter the shut-off state, so that the flow rate of the fluid entering the fluid pump 5 from the second chamber 3 can be controlled to adjust the degree of energy recovery.

[0087] exist Figure 1 In the embodiment, the vibration reduction assembly 100 may include a first auxiliary pipeline and a second auxiliary pipeline. The first auxiliary pipeline may connect the first chamber 2 and the first control pipeline. The second auxiliary pipeline may connect the second chamber 3 and the second control pipeline. The first auxiliary pipeline and the second auxiliary pipeline may be connected to each other. The fluid may flow into the first chamber 2 or the second chamber 3 through at least one of the first auxiliary pipeline and the second auxiliary pipeline. Figure 1 In the figure, the first auxiliary pipeline can be represented as N1 and the second auxiliary pipeline can be represented as N2.

[0088] exist Figure 1 In the embodiment, the first auxiliary pipeline may include a fifth solenoid valve 13, and the second auxiliary pipeline may include a third one-way valve 14. The third one-way valve 14 can unidirectionally conduct the pipeline from the first auxiliary pipeline to the second chamber 3. When the fluid flows out of the first chamber 2, it can flow into the second chamber 3 through the fifth solenoid valve 13 and the third one-way valve 14 in sequence. Among them, the fifth solenoid valve 13 can control the flow rate of the fluid when it passes through the fifth solenoid valve 13. When the fluid flows through the fifth solenoid valve 13, the flow rate can be limited by the fifth solenoid valve 13, which can increase the resistance of the fluid, and then the resistance can be transmitted to the piston member to hinder the movement of the piston member, thereby achieving a damping and vibration reduction effect when the piston member compresses the first chamber 2. The fifth solenoid valve 13 may include a throttle valve.

[0089] In addition, the first auxiliary pipeline may further include a second one-way valve 12. Figure 1 In the embodiment, the second one-way valve 12 can unidirectionally conduct the pipeline from the first chamber 2 to the fifth solenoid valve 13, so that the fluid cannot flow from the fifth solenoid valve 13 to the first chamber 2 through the second one-way valve 12. In some cases, the second one-way valve 12 and the fifth solenoid valve 13 can be used as an integral valve structure rather than being composed of different valve structures.

[0090] exist Figure 1 In the embodiment, the first auxiliary pipeline may include a first one-way valve 11, and the second auxiliary pipeline may include a sixth solenoid valve 16. The first one-way valve 11 can unidirectionally conduct the pipeline from the second auxiliary pipeline to the first chamber 2. When the fluid flows out of the second chamber 3, it can flow into the second chamber 3 through the sixth solenoid valve 16 and the first one-way valve 11 in sequence. Among them, the sixth solenoid valve 16 can control the flow rate of the fluid when it passes through the sixth solenoid valve 16. When the fluid flows through the sixth solenoid valve 16, the flow rate can be limited by the sixth solenoid valve 16 and the resistance of the fluid can be increased, and then the resistance can be transmitted to the piston member to hinder the movement of the piston member, thereby achieving a damping and vibration reduction effect when the piston member compresses the second chamber 3. The sixth solenoid valve 16 may include a throttle valve.

[0091] In addition, the second auxiliary pipeline may further include a fourth one-way valve 15. Figure 1 In the embodiment, the fourth one-way valve 15 can unidirectionally conduct the pipeline from the second chamber 3 to the sixth solenoid valve 16, so that the fluid cannot flow from the sixth solenoid valve 16 through the fourth one-way valve 15 into the first chamber 2. In some cases, the fourth one-way valve 15 and the sixth solenoid valve 16 can be used as an integral valve structure rather than being composed of different valve structures.

[0092] On the basis of the above content, for the valve structure that can be used as a throttle valve, there can be different throttling states, each throttling state can correspond to the opening of the valve structure, or in other words, by controlling the valve structure to switch to a corresponding throttling state, the flow rate of the fluid flowing through can be controlled accordingly, thereby adjusting the damping and vibration reduction effect of the fluid on the piston.

[0093] Please refer to Figure 1 , the fluid pump 5 can be located outside the vibration reduction part. The motor 6 can be located outside the vibration reduction part.

[0094] This helps to increase the length of the vibration-damping part, making it easier for the vibration-damping assembly 100 to match more usage scenarios.

[0095] exist Figure 1 In the figure, the A1 direction and the A2 direction may be the length direction of the shock absorber. In the related art, the hydraulic pump and the generator are arranged on the piston member in the shock absorber, so that the three are stacked and arranged in a structure, which will result in a longer overall length of the piston member. In some cases, the length of the shock absorber needs to be reduced accordingly, which is likely to affect the shock absorption effect of the shock absorber.

[0096] On the basis of the above content, by arranging the fluid pump 5 and the motor 6 outside the vibration reduction part, the vibration reduction part, the fluid pump 5 and the motor 6 can be arranged separately to avoid structural stacking, which will not affect the length of the vibration reduction part. In addition, please combine Figure 1 When the vibration-damping part is set to have a longer length, the inner cavity can also have a larger space to accommodate more fluid, which is beneficial to improving the vibration-damping effect of the vibration-damping part.

[0097] The working mode of the vibration reduction assembly 100 may include: one or at least two of an active working mode, a passive working mode and an energy recovery working mode.

[0098] Please refer to Figure 1 and Figure 2 The motor 6 can be connected to the energy supply unit (not shown) of the vibration reduction assembly 100. The vibration reduction assembly 100 can have an active working mode. In the active working mode, the motor 6 is configured to be powered by the energy supply unit to drive the fluid pump 5, which can then drive the fluid to flow into the first chamber 2 or the second chamber 3 so that the piston member moves relative to the chamber 4.

[0099] In this way, the effect of active vibration reduction can be achieved.

[0100] exist Figure 2 In the embodiment, when the vibration reduction assembly 100 is in the active working mode, the second solenoid valve 8 is in a connected state, so that the first control pipeline can be connected to the fluid pump 5 and the first chamber 2; the fourth solenoid valve 10 is in a connected state, so that the second control pipeline can be connected to the fluid pump 5 and the second chamber 3. The flow path formed by the first chamber 2, the first control pipeline, the fluid pump 5, the second control pipeline and the second chamber 3 can be filled with fluid.

[0101] The energy supply unit can drive the motor 6 to rotate the motor shaft of the motor 6. The motor shaft drives the pump shaft of the fluid pump 5 to rotate, and then the pump shaft of the fluid pump 5 can drive the fluid in the fluid pump 5 to flow. In the case of the flow driven by the pump shaft, the fluid will be driven to flow into the first chamber 2 or the second chamber 3, and then the piston member can be pushed to move, so as to offset the vibration of the piston member when the vibration reduction assembly 100 is vibrated.

[0102] When the vibration reduction assembly 100 is in the active working mode, whether the fluid flows into the first chamber 2 or the second chamber 3 can be achieved by adjusting the control. Figure 1Specifically, when it is determined that the direction of the force acting on the piston by the vibration is in the direction of A1, it can be determined that the force acting on the piston along the direction of A2 needs to be generated, so that the fluid pump 5 can drive the fluid to flow to the first chamber 2, so that the volume of the first chamber 2 increases and the piston moves in the direction of the second chamber 3; when it is determined that the direction of the force acting on the piston by the vibration is in the direction of A2, it can be determined that the force acting on the piston along the direction of A1 needs to be generated, so that the fluid pump 5 can drive the fluid to flow to the second chamber 3, so that the volume of the second chamber 3 increases and the piston moves in the direction of the first chamber 2. When the second chamber 3 is squeezed by the piston, the fluid in the second chamber 3 will also flow out and can flow into the fluid pump 5, and will also be driven to flow into the first chamber 2; when the first chamber 2 is squeezed by the piston, the fluid in the first chamber 2 will also flow out and can flow into the fluid pump 5, and will also be driven to flow into the second chamber 3, so that a positive feedback effect can be played, so that the fluid can push the piston to move faster, which is conducive to improving the effect of active vibration reduction.

[0103] In addition, the energy supply unit may be a battery or a generator, and the energy supply unit may provide electric power to the motor 6 so that the motor 6 can drive the motor shaft to rotate through the electric power.

[0104] Please refer to Figure 1 and Figure 3 , the vibration reduction assembly 100 may include at least one throttle valve. The at least one throttle valve may connect the first chamber 2 and the second chamber 3. The vibration reduction assembly 100 may have a passive working mode. In the passive working mode, the fluid pump 5 is configured to be respectively closed with the first chamber 2 and the second chamber 3, so that the fluid flows between the first chamber 2 and the second chamber 3 through the at least one throttle valve. The at least one throttle valve may be used to adjust the flow rate of the fluid, and thus the damping force on the piston member.

[0105] In this way, the effect of active vibration reduction can be achieved.

[0106] exist Figure 3 In the embodiment, when the vibration reduction assembly 100 is in the passive working mode, the second solenoid valve 8 is in the off state, so that the pipeline in the first control pipeline connecting the fluid pump 5 and the first chamber 2 is cut off; the fourth solenoid valve 10 is in the off state, so that the pipeline in the second control pipeline connecting the fluid pump 5 and the second chamber 3 is cut off. At least one of the fifth solenoid valve 13 and the sixth solenoid valve 16 can be used as a throttle valve.

[0107] exist Figure 3When the piston compresses the first chamber 2, the fluid in the first chamber 2 will flow out and can flow into the second chamber 3 through the second one-way valve 12, the fifth solenoid valve 13 and the third one-way valve 14 in sequence; when the piston compresses the second chamber 3, the fluid in the second chamber 3 will flow out and can flow into the first chamber 2 through the fourth one-way valve 15, the sixth solenoid valve 16 and the first one-way valve 11 in sequence.

[0108] When the fifth solenoid valve 13 is a throttle valve, the fluid flowing from the first chamber 2 to the second chamber 3 will be restricted in the flow rate by the fifth solenoid valve 13 when passing through the fifth solenoid valve 13, generating a damping force, which will generate a reverse acting force on the piston to restrict the piston from continuing to compress the first chamber 2; when the sixth solenoid valve 16 is a throttle valve, the fluid flowing from the second chamber 3 to the first chamber 2 will be restricted in the flow rate by the sixth solenoid valve 16 when passing through the sixth solenoid valve 16, generating a damping force, which will generate a reverse acting force on the piston to restrict the piston from continuing to compress the second chamber 3.

[0109] In addition, by switching the throttling state of the throttle valve, the throttle valve can have a corresponding opening degree, and then the change degree and magnitude of the damping force can be adjusted, which is beneficial to improving the response speed and strength to vibration during passive vibration damping.

[0110] The vibration damping assembly 100 can have an energy recovery working mode. Please refer to Figure 1 and Figure 4 , the vibration damping assembly 100 can include a first overflow valve and a first throttle valve. The first overflow valve can be connected to the first chamber 2 and the fluid pump 5. The first throttle valve can be connected to the first chamber 2 and the second chamber 3. In the energy recovery working mode, the vibration damping assembly 100 is configured to coordinately adjust the overflow pressure of the first overflow valve and the opening degree of the first throttle valve to adjust the proportion of the fluid in the first chamber 2 flowing through the fluid pump 5. The proportion of the fluid flowing through the fluid pump 5 can correspond to the degree of energy recovery of the motor 6.

[0111] In this way, the effects of energy recovery and damping vibration reduction can be achieved simultaneously.

[0112] In Figure 4 , the first overflow valve can be the first solenoid valve 7, and the first throttle valve can be the fifth solenoid valve 13. The first overflow valve can be in a corresponding overflow state, so that when the pressure generated by the fluid on the first overflow valve is greater than the overflow pressure corresponding to the overflow state of the first overflow valve, the first overflow valve can conduct the first chamber 2 and the fluid pump 5, and then the fluid can flow from the first chamber 2 into the fluid pump 5. The first throttle valve can be in a corresponding throttling state, so that when the fluid flows through the first throttle valve, the fluid can flow through the first throttle valve to the second chamber 3 at a certain flow rate.

[0113] When the shock absorbing assembly 100 is in the energy recovery working mode, the first overflow valve will be in one of the overflow states, and the first throttle valve will also be in one of the throttling states. When the fluid flows out of the first chamber 2, a part of it will flow into the fluid pump 5 through the first overflow valve, and the other part will flow to the second chamber 3 through the first throttle valve. The fluid flowing into the fluid pump 5 will drive the pump shaft to rotate, so that the motor 6 can convert the mechanical energy of the motor shaft rotation into electrical energy accordingly. The fluid flowing through the first throttle valve will be restricted by the flow rate of the fluid by the first throttle valve, so that the fluid can generate corresponding damping force.

[0114] On the basis of the above, when the fluid flows out of the first chamber 2, since the overflow state of the first overflow valve can have a corresponding overflow pressure, and the throttling state of the first throttle valve can have a corresponding opening, by coordinating and adjusting the overflow pressure of the first overflow valve and the opening of the first throttle valve, the proportion of the fluid flowing out of the first chamber 2 into the fluid pump 5 can be changed, and then the ratio between the energy recovered by the fluid in the fluid pump 5 and the energy dissipated by the damping force generated by the first throttle valve can be changed. The greater the proportion of the energy recovered by the fluid in the fluid pump 5, the greater the ratio, and the greater the degree of energy recovery; the smaller the proportion of the energy recovered by the fluid in the fluid pump 5, the smaller the ratio, and the lighter the degree of energy recovery. Since the above-mentioned coordinated adjustment can also change the force of the fluid on the piston, it is possible to achieve the effect of both energy recovery and damping vibration reduction.

[0115] Among them, when it is necessary to increase the proportion of fluid flowing into the fluid pump 5, the overflow pressure of the first overflow valve can be reduced accordingly to make it easier for the fluid to flow through the first overflow valve, and the opening size of the first throttle valve can be reduced accordingly to make it more difficult for the fluid to flow through the first throttle valve; when it is necessary to reduce the proportion of fluid flowing into the fluid pump 5, the overflow pressure of the first overflow valve can be increased accordingly to make it more difficult for the fluid to flow through the first overflow valve, and the opening size of the first throttle valve can be increased accordingly to make it easier for the fluid to flow through the first throttle valve.

[0116] exist Figure 4 In the embodiment, the vibration reduction assembly 100 may include a second solenoid valve 8. When the vibration reduction assembly 100 is in the energy recovery working mode, the second solenoid valve 8 may be in an off state, so that the fluid can only flow into the fluid pump 5 through the first solenoid valve 7, thereby making it easier to control the proportion of the fluid flowing into the fluid pump 5 through the first solenoid valve 7.

[0117] Please refer to Figure 1 and Figure 5, the vibration reduction assembly 100 may include a second overflow valve and a second throttle valve. The second overflow valve may connect the second chamber 3 and the fluid pump 5. The second throttle valve may connect the first chamber 2 and the second chamber 3. In the energy recovery working mode, the vibration reduction assembly 100 is configured to coordinately adjust the overflow pressure of the second overflow valve and the opening of the second throttle valve to adjust the flow rate of the fluid in the second chamber 3 flowing through the fluid pump 5. The flow rate of the fluid flowing through the fluid pump 5 may correspond to the power generation rate of the motor 6.

[0118] In this way, the effects of energy recovery and damping vibration reduction can be achieved at the same time.

[0119] exist Figure 5 In the embodiment, the second overflow valve may be the third solenoid valve 9, and the second throttle valve may be the sixth solenoid valve 16. The second overflow valve may be in a corresponding overflow state, so that when the pressure exerted by the fluid on the second overflow valve is greater than the overflow pressure corresponding to the overflow state of the second overflow valve, the second overflow valve conducts the second chamber 3 and the fluid pump 5, thereby allowing the fluid to flow from the second chamber 3 into the fluid pump 5. The second throttle valve may be in a corresponding throttling state, so that when the fluid flows through the second throttle valve, the fluid flows to the first chamber 2 through the second throttle valve at a certain flow rate.

[0120] When the vibration reduction assembly 100 is in the energy recovery working mode, the second overflow valve will be in one of the overflow states, and the second throttle valve will also be in one of the throttling states. When the fluid flows out of the second chamber 3, a part of it will flow into the fluid pump 5 through the second overflow valve, and the other part will flow to the first chamber 2 through the second throttle valve. The fluid flowing into the fluid pump 5 will drive the pump shaft to rotate, so that the motor 6 can convert the mechanical energy of the motor shaft rotation into electrical energy accordingly. The fluid flowing through the second throttle valve will be restricted by the second throttle valve on the flow of the fluid, so that the fluid can generate a corresponding damping force.

[0121] On the basis of the above, when the fluid flows out of the second chamber 3, since the overflow state of the second overflow valve can have a corresponding overflow pressure, the throttling state of the second throttle valve can have a corresponding opening. By coordinating and adjusting the overflow pressure of the second overflow valve and the opening of the second throttle valve, the proportion of the fluid flowing out of the second chamber 3 into the fluid pump 5 can be changed, and then the ratio between the energy recovered by the fluid in the fluid pump 5 and the energy dissipated by the damping force generated by the second throttle valve can be changed. The greater the proportion of the energy recovered by the fluid in the fluid pump 5, the greater the ratio, and the greater the degree of energy recovery; the smaller the proportion of the energy recovered by the fluid in the fluid pump 5, the smaller the ratio, and the lighter the degree of energy recovery. Since the above-mentioned coordinated adjustment can also change the force of the fluid on the piston, it is possible to achieve the effect of both energy recovery and damping vibration reduction.

[0122] Among them, when it is necessary to increase the proportion of fluid flowing into the fluid pump 5, the overflow pressure of the second overflow valve can be reduced accordingly to make it easier for the fluid to flow through the second overflow valve, and the opening size of the second throttle valve can be reduced accordingly to make it more difficult for the fluid to flow through the second throttle valve; when it is necessary to reduce the proportion of fluid flowing into the fluid pump 5, the overflow pressure of the second overflow valve can be increased accordingly to make it more difficult for the fluid to flow through the second overflow valve, and the opening size of the second throttle valve can be increased accordingly to make it easier for the fluid to flow through the second throttle valve.

[0123] exist Figure 4 In the embodiment, the vibration reduction assembly 100 may include a fourth solenoid valve 10. When the vibration reduction assembly 100 is in the energy recovery working mode, the fourth solenoid valve 10 may be in an off state, so that the fluid can only flow into the fluid pump 5 through the third solenoid valve 9, thereby making it easier to control the proportion of the fluid flowing into the fluid pump 5 through the third solenoid valve 9.

[0124] In addition, the motor 6 can be connected to an energy storage unit (not shown). The motor 6 can transmit the generated electrical energy to the energy storage unit to store the recovered energy for subsequent use.

[0125] The upper limit of the overflow pressure of the first overflow valve can be determined according to the pressure of the piston compressing the fluid in the first chamber 2. The upper limit of the overflow pressure of the second overflow valve can be determined according to the pressure of the piston compressing the fluid in the second chamber 3.

[0126] In this way, a certain energy recovery effect can be guaranteed.

[0127] It should be pointed out that, for the first overflow valve and the second overflow valve, the magnitudes of the overflow pressures corresponding to different overflow states may be relative, or in other words, the magnitude of the overflow pressure corresponding to each overflow state may not be an absolute value, but there is a magnitude relationship between the magnitudes of the overflow pressures corresponding to different overflow states.

[0128] The magnitude of the overflow pressure can be determined by the magnitude of the pressure generated by the piston member squeezing the fluid in the inner cavity. Specifically, when the piston member compresses the first cavity 2, the pressure on the first cavity 2 can affect the pressure of the fluid when it flows out of the first cavity 2. The upper limit of the overflow pressure of the first overflow valve is determined according to the pressure of the fluid, so that the fluid will not be unable to flow through the first overflow valve due to the pressure being less than the overflow pressure of the first overflow valve; when the piston member compresses the second cavity 3, the pressure on the second cavity 3 can affect the pressure of the fluid when it flows out of the second cavity 3. The upper limit of the overflow pressure of the second overflow valve is determined according to the pressure of the fluid, so that the fluid will not be unable to flow through the first overflow valve due to the pressure being less than the overflow pressure of the second overflow valve. On the basis of the above, no matter which overflow state the first overflow valve or the second overflow valve is in, the corresponding overflow pressure will be less than the pressure of the fluid, thereby ensuring a certain energy recovery effect.

[0129] In addition, the pressure of the piston member compressing the fluid in the inner cavity can be determined by the collected vibration acceleration of the vibration reduction assembly 100, or by the collected fluid pressure. The vibration acceleration of the vibration reduction assembly 100 can be the acceleration of one end of the piston rod 1 along the A1 direction when it is vibrated, the acceleration of one end of the cavity 4 along the A2 direction when it is vibrated, or a combination of the two. The fluid pressure can be detected and collected by a fluid pressure sensor installed in the pipeline between the inner cavity and the overflow valve.

[0130] Please refer to Figures 1 to 5 , the vibration reduction assembly 100 may include a storage container 17. The storage container 17 may connect the first chamber 2 and the second chamber 3. The storage container 17 may be used to replenish the fluid to the first chamber 2, and to store at least part of the fluid flowing out of the first chamber 2. The volume of the first chamber 2 when the piston member is in the initial position may be larger than the volume of the second chamber 3 when the piston member is in the initial position. The storage container 17 may be used to replenish the fluid to the second chamber 3, and to store at least part of the fluid flowing out of the second chamber 3. The volume of the second chamber 3 when the piston member is in the initial position may be larger than the volume of the first chamber 2 when the piston member is in the initial position.

[0131] This is helpful to ensure that the damping and vibration reduction effect is achieved through the fluid.

[0132] It can be understood that the inner cavity is divided into the first cavity 2 and the second cavity 3 by the piston member. In some practical cases, due to the limitation of the specific structure, when the piston member is in the initial position, the inner cavity may not be evenly or substantially evenly divided, so that the first cavity 2 and the second cavity 3 may have different initial space sizes. In this case, when the one with the smaller initial space is compressed, there will be a problem that sufficient fluid cannot be added to the one with the larger initial space, which will cause the damping and vibration reduction of the piston member by the fluid to be untimely or ineffective.

[0133] exist Figures 1 to 5 In the embodiment, the storage container 17 can be connected between the first auxiliary pipeline and the second auxiliary pipeline. The storage container 17 can store fluid. When the fluid in the first chamber 2 flows to the second chamber 3, or when the fluid in the second chamber 3 flows to the first chamber 2, the storage container 17 can be used to supplement additional fluid or store excess fluid.

[0134] Specifically, the case where the initial space of the first cavity 2 is smaller than the initial space of the second cavity 3 is described. Figure 2 In the embodiment, when the vibration reduction assembly 100 is in the active working mode, if the piston member presses the first chamber 2, the fluid in the first chamber 2 can flow into the fluid pump 5 through the second solenoid valve 8. Since there is fluid flow between the first chamber 2 and the second solenoid valve 8, there can be a pressure difference between the two ends of the first one-way valve 11, and the passage between the storage container 17 and the second solenoid valve 8 is connected, and the fluid in the storage container 17 will flow into the fluid pump 5 through the first one-way valve 11 and the second solenoid valve 8, so as to replenish the fluid to fill the space of the second chamber 3 and ensure sufficient damping and vibration reduction effect; if the piston member presses the second chamber 3, the fluid in the second chamber 3 can flow into the fluid pump 5 through the fourth solenoid valve 10. Since there is more fluid in the second chamber 3, part of the fluid can flow into the storage container 17 through the fourth one-way valve 15 and the sixth solenoid valve 16, which can also avoid the situation that the excess fluid cannot flow into the first chamber 2 and the entire pipeline system is subjected to a relatively large pressure, and can ensure sufficient damping and vibration reduction effect.

[0135] Moreover, the fluid pump 5 can have a pressurizing effect, so that the fluid flowing out of the fluid pump 5 has a higher pressure, which is beneficial to improving the damping and vibration reduction effect.

[0136] In addition, in some cases, the storage container 17 may have a chamber storing a fluid and a chamber storing a compressed gas. When the storage container 17 needs to be supplemented with additional fluid or store excess fluid, the volume of the chamber storing the fluid will change, causing the pressure balance between the chamber storing the compressed gas and the chamber storing the fluid to change, so that the storage container 17 can supplement a certain amount of additional fluid or store a certain amount of excess fluid through the pressure difference.

[0137] A suspension device of the present invention can be used for a vehicle (not shown). The suspension device may include a suspension controller and a damping assembly 100 of any one of the above embodiments. The damping assembly 100 may include a plurality of valve bodies. The suspension controller is configured to control the plurality of valve bodies so that the fluid pump 5 can drive the motor 6 through the fluid flowing through the fluid pump 5, and / or the motor 6 can drive the fluid pump 5 to drive the fluid in the fluid pump 5 to flow.

[0138] In the above suspension device, when the damping part is vibrated, the piston member can move in the inner cavity so that a stroke pressure difference is generated between the first cavity 2 and the second cavity 3, and the fluid in the inner cavity will be pressurized and flow between the first cavity 2 and the second cavity 3, which can produce a damping effect on the piston member through the fluid, thereby achieving damping vibration reduction. When the fluid flows through the fluid pump 5, it can drive the motor 6 to rotate, and the motor 6 can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, or they can be coordinated with each other, which is conducive to improving applicability.

[0139] Specifically, the vibration reduction assembly 100 of the present invention can be used as a part of the vehicle suspension to reduce vibration of the vehicle and take into account the effect of energy recovery.

[0140] Among them, Figure 1 In the embodiment, the suspension device may include a wheel connector 19. The wheel connector 19 may be connected to the outer surface of one side of the cavity 4 along the A2 direction, so that the wheel of the vehicle can transmit vibration to the shock absorbing assembly 100 through the wheel connector 19. The shock absorbing assembly 100 may be connected to the body structure of the vehicle through one end of the piston rod 1 along the A1 direction.

[0141] When the vehicle is subjected to vibration from the ground, the vibration will gradually be transmitted along the wheels to the entire vehicle structure. Since the vibration will be transmitted to the cavity 4, relative movement will occur between the cavity 4 and the piston member along the A1 direction or the A2 direction. According to the above-mentioned contents about the vibration reduction assembly 100, the fluid in the inner cavity will produce a damping and vibration reduction effect on the piston member to suppress the vibration, thereby reducing the impact of the vibration on the vehicle. Moreover, the vibration reduction assembly 100 can recover energy through the flow of fluid during the vibration reduction process, which is beneficial to improve the energy utilization effect and the endurance of the vehicle.

[0142] The multiple valve bodies included in the vibration reduction assembly 100 may be at least one of the first solenoid valve 7, the second solenoid valve 8, the third solenoid valve 9, the fourth solenoid valve 10, the fifth solenoid valve 13, and the sixth solenoid valve 16. Specifically, for a two-position two-way solenoid valve, the suspension controller can change the magnitude of the input current so that the two-position two-way solenoid valve can switch between a connected state and a closed state. For a relief valve, the suspension controller can change the magnitude of the input current so that the relief valve can switch between different relief states, thereby changing the relief pressure of the relief valve. For a throttle valve, the suspension controller can change the magnitude of the input current so that the throttle valve can switch between different throttling states, thereby changing the opening size of the throttle valve. The control of the valve body by the suspension controller is based on the premise of being able to achieve the corresponding functional role.

[0143] The vibration reduction assembly 100 may have at least two working modes. The two working modes of the vibration reduction assembly 100 may include at least one of an active working mode, a passive working mode and an energy recovery working mode, which may be set according to specific requirements.

[0144] The suspension controller can be configured to control a portion of the multiple valve bodies to be connected and another portion to be closed according to the driving information of the vehicle, so that the vibration reduction assembly 100 is in one of the working modes. Specifically, the suspension controller can control at least one corresponding valve body to be turned on or off, so that the vibration reduction assembly 100 can be switched between different working modes to achieve different use effects. Regarding the valve bodies and working modes included in the vibration reduction assembly 100, please refer to the above-mentioned related content, and no further description will be given here.

[0145] Regarding the different solenoid valves in the aforementioned content, the magnitude of the input current can also be changed through the suspension controller so as to be able to switch between different overflow states, or to be able to switch between different throttling states.

[0146] In addition, while taking into account both damping and vibration reduction and energy recovery, the vehicle's driving comfort can also be guaranteed.

[0147] The driving information may include at least one of a road surface signal, a driving mode signal, a suspension acceleration signal, a suspension displacement signal, a vehicle body acceleration signal, a vehicle speed signal, a steering wheel angle signal, and a battery charge signal.

[0148] In this way, the timing for damping vibration reduction and energy recovery can be determined, which is beneficial to improving applicability.

[0149] It can be understood that the suspension controller can determine whether the wheels of the vehicle are far away from or close to the cavity 4, or whether they are about to be far away from or close to the cavity 4 according to the driving information, and then can generate corresponding damping force for damping vibration reduction by controlling the flow rate of the fluid according to the trend of the wheels being far away from or close to the cavity 4, and can adjust the degree of energy recovery by adjusting the specific situation of the fluid flowing into the fluid pump 5. In such a process, the generation of damping force and the execution of energy recovery can be independent of each other, which is conducive to the decoupling and coordination of the two effects.

[0150] Specifically, the road condition of the road where the vehicle is located can be determined by the road surface signal, the driving demand or tendency of the vehicle can be determined by the driving mode signal, the shaking of the suspension device can be determined by the suspension acceleration signal and / or the suspension displacement signal, the vibration condition of the vehicle while driving can be determined by the body acceleration signal and / or the vehicle speed signal, the vibration condition of the vehicle while turning can be determined by the steering wheel angle signal, and whether energy recovery is needed can be determined by the battery charge signal.

[0151] In some cases, the suspension controller can determine the road surface that the vehicle's wheels are about to pass through based on the road surface information, and then control the damping assembly 100 to switch to the active working mode. In the active working mode, if the wheel is about to pass through a pothole and will be in the air for a certain period of time, the fluid can flow from the first chamber 2 into the second chamber 3, and the wheel will be closer to the road surface, which can reduce the impact on the wheel when the wheel lands again.

[0152] By determining the corresponding driving information, it is helpful to analyze or predict the vibration conditions that the vehicle is subjected to or will be subjected to, so as to be able to switch the working mode of the vibration reduction assembly 100 in time, and then to adjust the degree of damping vibration reduction and the degree of energy recovery of the vibration reduction assembly 100. The suspension controller analyzes the driving information by analyzing and judging one of the signals included in the driving information, or by comprehensively analyzing two or more signals included in the driving information.

[0153] In addition, the suspension device may include an energy recovery unit (not shown) and an energy storage unit. The energy recovery unit may be connected between the motor 6 and the energy storage unit. When the motor 6 converts electrical energy, the electrical energy exists in the form of alternating current. The energy recovery unit may convert electrical energy into direct current, thereby conveniently storing the electrical energy in the energy storage unit.

[0154] A vehicle of the present invention may include the vibration reduction assembly 100 of any one of the above embodiments, and / or the suspension device of any one of the above embodiments.

[0155] In the above-mentioned vehicle, when the shock absorbing part is vibrated, the piston member can perform piston movement in the inner cavity so that a stroke pressure difference is generated between the first cavity 2 and the second cavity 3. The fluid in the inner cavity will be pressurized and flow between the first cavity 2 and the second cavity 3, and the fluid can produce a damping effect on the piston member to achieve damping vibration reduction. When the fluid flows through the fluid pump 5, it can drive the motor 6 to rotate, and the motor 6 can convert the kinetic energy of the fluid into electrical energy to achieve energy recovery. On the basis of the above, damping vibration reduction and energy recovery can be independently controlled and decoupled, and can also be coordinated with each other, which is conducive to improving applicability.

[0156] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments of the present invention without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vibration reduction assembly, It is characterized in that include: A vibration damping part, the vibration damping part comprises a cavity and a piston member, the cavity forms an inner cavity, at least a portion of the piston member movably fits an inner side wall of the inner cavity and divides the inner cavity into a first cavity and a second cavity; a fluid pump, the fluid pump communicating the first chamber with the second chamber, and; A motor, the motor being drivingly connected to the fluid pump; The vibration reduction assembly is configured to enable the fluid pump to drive the motor through the fluid flowing through the fluid pump, and / or to enable the motor to drive the fluid pump to drive the fluid in the fluid pump to flow.

2. The vibration reduction assembly according to claim 1, It is characterized in that The fluid pump is located outside the vibration reduction part, and the motor is located outside the vibration reduction part.

3. The vibration reduction assembly according to claim 1, It is characterized in that The working modes of the vibration reduction component include: one or at least two of an active working mode, a passive working mode and an energy recovery working mode.

4. The vibration reduction assembly according to any one of claims 1 to 3, It is characterized in that The motor is connected to the energy supply unit of the vibration reduction assembly, and the vibration reduction assembly has an active working mode; In the active working mode, the motor is configured to supply energy through the energy supply unit to drive the fluid pump, thereby driving the fluid to flow into the first chamber or the second chamber so that the piston member moves relative to the chamber.

5. The vibration reduction assembly according to any one of claims 1 to 3, It is characterized in that The vibration reduction assembly has a passive working mode, and the vibration reduction assembly includes at least one throttle valve, and the at least one throttle valve connects the first chamber and the second chamber; In the passive working mode, the fluid pump is configured to be closed with the first chamber and the second chamber respectively, so that the fluid flows between the first chamber and the second chamber through the at least one throttle valve, and the at least one throttle valve is used to adjust the flow rate of the fluid, thereby adjusting the damping force exerted on the piston.

6. The vibration reduction assembly according to any one of claims 1 to 3, It is characterized in that The vibration reduction component has an energy recovery working mode; The vibration reduction assembly includes a relief valve and a throttle valve, one end of the relief valve is connected to one of the first chamber and the second chamber, the other end of the relief valve is connected to the fluid pump, and the throttle valve connects the first chamber and the second chamber. In the energy recovery working mode, the vibration reduction assembly is configured to coordinately adjust the overflow pressure of the overflow valve and the opening of the throttle valve to adjust the ratio of the fluid in one of the first chamber and the second chamber connected to the overflow valve flowing through the fluid pump; The ratio of the fluid flowing through the fluid pump corresponds to the degree of energy recovery of the motor.

7. The vibration reduction assembly according to claim 6, It is characterized in that The upper limit of the overflow pressure of the overflow valve is determined according to the pressure of the piston member compressing the fluid in one of the first chamber and the second chamber to which the overflow valve is connected.

8. The vibration reduction assembly according to claim 1, It is characterized in that The vibration reduction assembly includes a liquid storage container, and the liquid storage container is connected to the first cavity and the second cavity; The liquid storage container is used to replenish the fluid to the first chamber and store at least part of the fluid flowing out of the first chamber, the volume of the first chamber when the piston member is in the initial position is larger than the volume of the second chamber when the piston member is in the initial position, or; The liquid storage container is used to replenish the fluid to the second chamber and store at least part of the fluid flowing out of the second chamber. The volume of the second chamber when the piston member is in the initial position is larger than the volume of the first chamber when the piston member is in the initial position.

9. A suspension device for a vehicle, It is characterized in that The suspension device comprises: suspension controller, and; The vibration damping assembly according to any one of claims 1 to 8, wherein the vibration damping assembly comprises a plurality of valve bodies, and the suspension controller is configured to control the plurality of valve bodies so that the fluid pump can drive the motor through the fluid flowing through the fluid pump, and / or so that the motor can drive the fluid pump to drive the fluid in the fluid pump to flow.

10. The suspension device according to claim 9, It is characterized in that The vibration damping assembly has at least two working modes, and the suspension controller is configured to control a part of the plurality of valve bodies to be connected and another part to be closed according to the driving information of the vehicle, so that the vibration damping assembly is in one of the working modes.

11. The suspension device according to claim 10, It is characterized in that The driving information includes at least one of the following: Road surface signal, driving mode signal, suspension acceleration signal, suspension displacement signal, body acceleration signal, vehicle speed signal, steering wheel angle signal, and battery charge signal.

12. A vehicle, It is characterized in that include: The vibration reduction assembly according to any one of claims 1 to 8, and / or the suspension device according to any one of claims 9 to 11.

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