An energy storage device, a shock absorber, and a vehicle

Abstract

This application discloses an accumulator, a shock absorber, and a vehicle, relating to the field of vehicle technology, and aims to solve the problem of how to improve the response speed of an accumulator. The accumulator is suitable for installation in a vehicle's shock absorber, which includes a shock absorber body with a first hydraulic chamber and a second hydraulic chamber. The accumulator includes a first cylinder, a first piston, and a drive assembly. The first piston is disposed within the first cylinder and is slidable within it. The first piston is sealed to the first cylinder and forms a reservoir. Both the first and second hydraulic chambers communicate with the reservoir. The drive assembly is kinetically connected to the first piston and drives it to move axially along the first cylinder.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an energy storage device, a shock absorber, and a vehicle. Background Technology

[0002] Shock absorbers are used to dampen vehicle vibrations to improve vehicle comfort.

[0003] In the prior art, in order to improve the damping performance of the shock absorber, an accumulator is set in the shock absorber to absorb the impact energy of the road surface on the wheel, making the movement of the shock absorber smoother.

[0004] However, due to structural defects in the accumulator, the response speed of the accumulator is limited. Summary of the Invention

[0005] The purpose of this application is to provide an energy storage device, a shock absorber, and a vehicle, which aims to solve the problem of how to improve the response speed of the energy storage device.

[0006] In a first aspect, an accumulator is provided, suitable for installation in a vehicle shock absorber. The shock absorber includes a shock absorber body, the shock absorber body having a first hydraulic chamber and a second hydraulic chamber. The accumulator includes a first cylinder, a first piston, and a drive assembly. The first piston is disposed within the first cylinder and is slidable within the first cylinder. The first piston is sealed to the first cylinder and forms a reservoir. Both the first hydraulic chamber and the second hydraulic chamber are in communication with the reservoir. The drive assembly is throttle-connected to the first piston and is used to drive the first piston to move axially along the first cylinder.

[0007] In the above scheme, the first piston and the first cylinder form a reservoir, and both the first and second hydraulic chambers of the shock absorber are connected to the reservoir. When the vehicle vibrates, the hydraulic oil in the first and second hydraulic chambers of the shock absorber needs to flow through the reservoir during the exchange process. The movement of the first piston causes a change in the volume of the reservoir to absorb the energy generated by the vehicle vibration. Since the drive assembly can drive the first piston to move axially along the first cylinder, the speed at which the hydraulic oil enters the reservoir is adjustable, thereby improving the response speed of the accumulator.

[0008] Optionally, the drive assembly includes a coil and a magnetic element, one of which is connected to the first piston and the other is connected to the first cylinder. The coil and the magnetic element cooperate to drive the first piston to move.

[0009] Optionally, the coil is disposed in the first cylinder and arranged along the circumference of the first piston, and the magnetic element is connected to the first piston.

[0010] Optionally, along the axial direction of the first piston, the first piston is movable relative to the first cylinder between a first position and a second position, and when the first piston is in the first position or the second position, the first piston at least partially overlaps with the coil along the radial direction of the first piston.

[0011] Optionally, the accumulator further includes a slide valve assembly connected between the accumulator and the damper body. The slide valve assembly is provided with a first throttling channel and a second throttling channel. The liquid storage chamber, the first hydraulic chamber and the second hydraulic chamber are all connected to the first throttling channel and the second throttling channel.

[0012] The slide valve assembly can switch between a first state and a second state. When the slide valve assembly is in the first state, the first throttling channel is open and the second throttling channel is closed, and the first hydraulic chamber, the reservoir chamber, and the second hydraulic chamber are connected in sequence through the first throttling channel. When the slide valve assembly is in the second state, the first throttling channel is closed and the second throttling channel is open, and the second hydraulic chamber, the reservoir chamber, and the first hydraulic chamber are connected in sequence through the second throttling channel.

[0013] Optionally, the slide valve assembly includes a fixing member and a movable component slidably connected to the fixing member. The fixing member has a receiving cavity and a first channel, a second channel, and a third channel communicating with the receiving cavity. The first channel communicates with the first hydraulic cavity, the second channel communicates with the second hydraulic cavity, and the third channel communicates with the liquid storage cavity.

[0014] The movable component is disposed within the accommodating cavity and is movable between a first position and a second position. The movable component has a fourth channel and a fifth channel. The fourth channel connects the first channel and the third channel, and the fifth channel connects the second channel and the third channel. The cross-sectional area of ​​the fourth channel is smaller than that of the second channel, and the cross-sectional area of ​​the fifth channel is smaller than that of the first channel.

[0015] When the moving component is in the first position, it closes the fourth channel and opens the fifth channel, and the first channel, the accommodating cavity, the third channel, the fifth channel, and the second channel are sequentially connected to form the first throttling channel. When the moving component is in the second position, it opens the fourth channel and closes the fifth channel, and the second channel, the accommodating cavity, the third channel, the fourth channel, and the first channel are sequentially connected to form the second throttling channel. When the slide valve assembly is in the first state, the moving component moves to the first position. When the slide valve assembly is in the second state, the moving component moves to the second position.

[0016] Optionally, the third channel is located between the first channel and the second channel; the moving assembly includes a first group of moving members and a second group of moving members arranged along the length direction of the accommodating cavity, the first group of moving members having the fourth channel, and the second group of moving members having the fifth channel.

[0017] When the movable component is located in the first position, the first set of movable members overlaps with the third channel along the first direction so that the first channel and the third channel are connected through the accommodating cavity. The second set of movable members is located in the portion of the accommodating cavity between the second channel and the third channel to block the second channel and the third channel from communicating through the accommodating cavity. The first direction is perpendicular to the length direction of the accommodating cavity.

[0018] When the movable component is in the second position, the second set of movable members overlaps with the third channel along the first direction, so that the second channel and the third channel are connected through the accommodating cavity. The first set of movable members is located in the portion of the accommodating cavity between the first channel and the third channel, so as to block the first channel and the third channel from communicating through the accommodating cavity.

[0019] Optionally, the moving assembly includes a first group of moving members and a second group of moving members arranged along the length direction of the accommodating cavity, wherein the first group of moving members is provided with the fourth channel and the second group of moving members is provided with the fifth channel.

[0020] The first moving member includes a first valve core and a first valve sleeve arranged circumferentially along the first valve core, and the gap between the first valve core and the first valve sleeve forms the fourth channel. The second moving member includes a second valve core and a second valve sleeve arranged circumferentially along the second valve core, and the gap between the second valve core and the second valve sleeve forms the fifth channel.

[0021] When the moving component is in the first position, the first valve core is engaged with the first valve sleeve to close the fourth channel, and the second valve core is disengaged from the second valve sleeve to open the fifth channel; when the moving component is in the second position, the first valve core is disengaged from the first valve sleeve to open the fourth channel, and the second valve core is engaged with the second valve sleeve to close the fifth channel.

[0022] Secondly, this application provides a vibration damper, including an energy storage device.

[0023] Thirdly, this application provides a vehicle including an energy storage device and / or a shock absorber.

[0024] It should be noted that the technical effects brought about by the implementation methods of the second and third aspects of this application can be referred to the technical effects brought about by the corresponding implementation methods of the first aspect, and will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of this application; Figure 2 for Figure 1 The diagram shows the structure of the shock absorber in the vehicle. Figure 3 for Figure 2 A schematic diagram of the energy accumulator in the vibration damper shown; Figure 4 for Figure 3 The exploded view of the accumulator shown; Figure 5 for Figure 3 A schematic diagram of the accumulator in its first state; Figure 6 for Figure 5 The diagram shows the structure of the slide valve assembly in its second state. Figure 7 for Figure 5 A schematic diagram of the structure of the first valve sleeve in the slide valve assembly shown; Figure 8 for Figure 5 A schematic diagram of the fixing component in the slide valve assembly shown.

[0027] Figure label: 1000, vehicles; 100. Body; 200. Wheel; 300. Shock absorber; 10. Accumulator; 101. Liquid storage chamber; 102. Energy storage chamber; 20. Shock absorber body; 201. First hydraulic chamber; 202. Second hydraulic chamber; 1. First cylinder block; 2. First piston; 31. Coil; 32. Magnetic component; 4. Spool valve assembly; 401. First channel; 402. Second channel; 403. Third channel; 404. Fourth channel; 405. Fifth channel; 41. Fixing member; 411. Guide part; 4111. Guide hole; 4112. Seventh channel; 412. Receiving cavity; 42. First set of moving parts; 421. First valve core; 4211. Fourth sealing part; 4212. Valve stem part; 422. First valve sleeve; 4221. First sealing part; 4222. Third sealing part; 4223. Sixth channel; 4224. Annular groove; 43. Second set of moving parts; 431. Second valve core; 432. Second valve sleeve; 4321. Second sealing part; 44. First limiting member; 441. First limiting part; 442. Second limiting part; 45. Second limiting member; 46. First elastic member; 47. Second elastic member; 5. Elastic support components; 6. Fixed part; 61. Second cylinder; 62. Outer shell; 7. Moving parts; 71. Second piston; 72. Piston rod; 81. Plug; 82. Cylinder liner. Detailed Implementation

[0028] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0029] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0030] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0031] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, where the range of similarity is within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0032] This application provides a vehicle 1000, which can be a pure gasoline vehicle 1000, a pure electric vehicle 1000, a hybrid electric vehicle 1000, etc. The vehicle 1000 can also be a sedan, bus, truck, trailer, etc. This application does not specifically limit the type of vehicle 1000.

[0033] In some embodiments, see Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in an embodiment of this application. The vehicle 1000 includes a body 100 and wheels 200. The wheels 200 are connected to the lower part of the body 100, and the body 100 is moved by the rotation of the wheels 200.

[0034] In some embodiments, see Figure 1 and Figure 2 The vehicle 1000 also includes a shock absorber 300, which is connected between the body 100 and the wheel 200 to buffer the vibration of the vehicle 1000 when the wheel 200 is impacted by the road surface, so as to improve the comfort of the vehicle 1000.

[0035] Specifically, during the driving process of vehicle 1000, uneven road surfaces will impact vehicle 1000, which will not only affect ride comfort, but also reduce the adhesion between the wheels 200 and the ground, thus deteriorating the handling stability and driving safety of vehicle 1000.

[0036] As the core damping component of vehicle 1000, the shock absorber 300 mainly provides damping force to attenuate the reciprocating vibration of the elastic element in the shock absorber 300, absorb and dissipate the impact energy generated by road excitation, suppress the sway of the vehicle body 100, thereby improving ride smoothness and ride comfort, ensuring effective contact between the wheel 200 and the road surface, improving the handling stability and driving safety of vehicle 1000, and reducing the fatigue damage of vibration to the vehicle body 100 and other components.

[0037] In some examples, the shock absorber 300 includes a shock absorber body 20 and an elastic support 5. The shock absorber body 20 includes a fixed portion 6 and a moving portion 7, and the elastic support 5 is connected between the fixed portion 6 and the moving portion 7. The fixed portion 6 and the moving portion 7 are relative; when the wheel 200 encounters a road impact, the moving portion 7 and the fixed portion 6 reciprocate relative to each other, and the elastic support 5 is located between the fixed portion 6 and the moving portion 7 to buffer the impact force.

[0038] For example, the elastic support 5 can be a wire spring, an air spring, etc.

[0039] For example, the fixed portion 6 in the shock absorber body 20 includes a second cylinder 61 and a housing 62, and the moving portion 7 in the shock absorber body 20 includes a second piston 71 and a piston rod 72. The housing 62 is located on the outer periphery of the second cylinder 61, and the second piston 71 is connected to the piston rod 72. The second piston 71 is slidable within the second cylinder 61 and is sealed to the second cylinder 61. The second piston 71 and the second cylinder 61 form a first hydraulic chamber 201 and a second hydraulic chamber 202. The second piston 71 is located between the first hydraulic chamber 201 and the second hydraulic chamber 202. The first hydraulic chamber 201 is located on the side of the second piston 71 facing away from the piston rod 72, and the second hydraulic chamber 202 is located on the side of the second piston 71 facing the piston rod 72. The second cylinder 61 and the housing 62 form a hydraulic channel, and the first hydraulic chamber 201 and the second hydraulic chamber 202 are connected through the hydraulic channel.

[0040] One of the piston rod 72 and the housing 62 is connected to the wheel 200, and the other is connected to the vehicle body 100. When the wheel 200 is impacted by the road surface, the second piston 71 moves along the second cylinder 61 to adjust the distance between the wheel 200 and the vehicle body 100. Since the total volume of the first hydraulic chamber 201 and the second hydraulic chamber 202 remains constant, the movement of the second piston 71 along the second cylinder 61 causes a change in the volume of each of the first and second hydraulic chambers 201 and 202, thereby generating pressure on the hydraulic oil. This causes the hydraulic oil to flow between the first and second hydraulic chambers 201 and 202 through the hydraulic channel, and the shock absorber 300 consumes vibration energy through the flow damping of the hydraulic oil.

[0041] It should be noted that the shock absorber 300 can be used not only in vehicles 1000, but also in aircraft, etc. For ease of understanding, this application uses the example of the shock absorber 300 installed in a vehicle 1000 for illustration.

[0042] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The shock absorber 300 also includes an accumulator 10, which is connected to the hydraulic channel of the shock absorber body 20. When the volume of the first hydraulic chamber 201 and the second hydraulic chamber 202 changes, the hydraulic oil first flows through the accumulator 10 to absorb the energy of the vehicle 1000 vibration through the damping provided by the accumulator 10, thereby improving the ride comfort of the shock absorber 300.

[0043] Specifically, the accumulator 10 includes a reservoir 101 and a buffer structure. The first hydraulic chamber 201 and the second hydraulic chamber 202 are both connected to the reservoir 101. When the wheel 200 is impacted and the elastic support 5 of the shock absorber 300 is compressed, the first hydraulic chamber 201 is compressed. The hydraulic oil in the first hydraulic chamber 201 flows to the second hydraulic chamber 202 through the accumulator 10. The accumulator 10 absorbs the impact energy of the hydraulic oil through the buffer structure. When the elastic support 5 of the shock absorber 300 is released, the buffer structure releases energy, quickly replenishing the hydraulic oil in the first hydraulic chamber 201 and improving the support force of the shock absorber 300.

[0044] For example, the buffer structure may include a spring. For instance, a spring may be provided on one side of the liquid storage chamber 101. When the volume of the liquid storage chamber 101 increases, the spring compresses and stores energy. When the volume of the liquid storage chamber 101 decreases, the spring extends and releases energy.

[0045] For example, the buffer structure may include a gas storage chamber. For instance, a gas storage chamber is provided on one side of the liquid storage chamber 101. The gas storage chamber stores gas. When the volume of the liquid storage chamber 101 increases, the volume of the gas storage chamber decreases accordingly, and the gas volume is compressed to store energy. When the volume of the liquid storage chamber 101 decreases, the volume of the gas storage chamber increases, and the gas releases energy.

[0046] It should be noted that, in addition to its application in the vibration damper 300, the accumulator 10 can also be used in the hydraulic systems of ships, mining machinery, etc. For ease of understanding, this application will use the application of the accumulator 10 in the vibration damper 300 as an example for illustration.

[0047] In related technologies, the accumulator 10 provides a fixed damping force through a buffer structure, which results in a limited response speed of the accumulator 10 to fluctuations in hydraulic oil pressure, thereby affecting the comfort of the shock absorber 300.

[0048] The response speed of the accumulator 10 is mainly reflected in the oil intake speed of the accumulator 10 when the shock absorber 300 is compressed and the oil replenishment speed of the accumulator 10 when the shock absorber 300 is extended. Specifically, when the wheel 200 encounters a road impact, the accumulator 10 allows hydraulic oil to quickly enter the reservoir 101, so the shock absorber body 20 can be compressed quickly, reducing the bumps of the vehicle 1000. If, under the above conditions, the speed at which the hydraulic oil enters the reservoir 101 is slow, it will cause the shock absorber 300 to be too stiff, causing the vehicle 1000 to experience strong bumps. When the shock absorber 300 is extended, the accumulator 10 can quickly replenish oil to the shock absorber body 20, establishing damping in the first hydraulic chamber 201, which can improve the support force of the shock absorber body 20, thereby improving the grip of the wheel 200. If the accumulator 10 replenishes oil to the shock absorber body 20 slowly, the shock absorber 300 cannot quickly provide support to the wheel 200, resulting in weak grip of the wheel 200 and affecting the stability of the vehicle body 100.

[0049] In some implementations, see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides an energy accumulator 10, which includes a first cylinder 1, a first piston 2, and a drive assembly. The first piston 2 is disposed within the first cylinder 1 and is slidable within the first cylinder 1. The first piston 2 is sealed to the first cylinder 1 and forms a liquid storage chamber 101. A first hydraulic chamber 201 and a second hydraulic chamber 202 are both connected to the liquid storage chamber 101. The drive assembly is drively connected to the first piston 2 and is used to drive the first piston 2 to move axially along the first cylinder 1.

[0050] In the above scheme, the first piston 2 and the first cylinder 1 form a reservoir 101, and the first hydraulic chamber 201 and the second hydraulic chamber 202 of the shock absorber 300 are both connected to the reservoir 101. When the vehicle 1000 vibrates, the hydraulic oil in the first hydraulic chamber 201 and the second hydraulic chamber 202 of the shock absorber 300 needs to flow through the reservoir 101 during the exchange process. The movement of the first piston 2 causes a change in the volume of the reservoir 101 to absorb the energy generated by the vibration of the vehicle 1000. Since the drive assembly can drive the first piston 2 to move axially along the first cylinder 1, the speed at which the hydraulic oil enters the reservoir 101 is adjustable, thereby improving the response speed of the accumulator 10.

[0051] Specifically, when the shock absorber body 20 is compressed, the drive assembly drives the first piston 2 to move in the first cylinder 1 along a first direction to increase the volume of the reservoir 101. This allows hydraulic oil in the first hydraulic chamber 201 to quickly enter the reservoir 101, causing the shock absorber body 20 to compress rapidly and reducing the bumps of the vehicle 1000. When the shock absorber body 20 is released, the drive assembly drives the first piston 2 to move in the second direction within the cylinder to decrease the volume of the reservoir 101. This applies pressure to the hydraulic oil, allowing the hydraulic oil in the reservoir 101 to quickly replenish the first hydraulic chamber 201, increasing the support force of the shock absorber body 20, thereby improving the response speed of the accumulator 10 and enhancing the comfort of the shock absorber 300.

[0052] In some examples, a plug 81 is also included. The first piston 2 and the first cylinder 1 form a liquid storage chamber 101, and the first piston 2, the first cylinder 1, and the plug 81 form an energy storage chamber 102. Along the axial direction of the first cylinder 1, the energy storage chamber 102 is located at one end of the liquid storage chamber 101, and the two are separated by the first piston 2. The plug 81 can be connected to the first cylinder 1 by threads, welding, riveting, or other methods. An O-ring or other sealing element can be provided between the plug 81 and the first cylinder 1 for sealing.

[0053] In the above scheme, the liquid storage chamber 101 is used to store the hydraulic oil generated by the volume change of the first hydraulic chamber 201 of the shock absorber body 20, and the energy storage chamber 102 is used to contain gas. Since the gas has good compressibility, it allows the first piston 2 to move along the first cylinder 1. The gas in the energy storage chamber 102 can be an inert gas.

[0054] When the vehicle 1000 experiences an electrical fault, the gas stored in the energy storage chamber 102 can provide damping for the first piston 2 through the compression and expansion of the gas, thereby improving the stability of the vehicle 1000.

[0055] When the shock absorber body 20 is compressed, the volume of the reservoir 101 increases to store the hydraulic oil flowing out of the first hydraulic chamber 201. The first piston 2 moves toward the energy storage chamber 102, compressing the gas inside the energy storage chamber 102 to store energy. When the shock absorber body 20 extends, the gas inside the energy storage chamber 102 drives the first piston 2 to move toward the reservoir 101, so that the accumulator 10 quickly replenishes the first hydraulic chamber 201 with fluid, increasing the supporting force of the shock absorber body 20.

[0056] In this embodiment, when the shock absorber body 20 is compressed, the first piston 2 can be driven to move toward the energy storage chamber 102 by the drive assembly. Due to the function of the drive assembly, the first piston 2 can overcome the friction between itself and the first cylinder 1, accelerating the movement speed of the first piston 2, allowing the hydraulic oil in the first hydraulic chamber 201 to flow quickly into the reservoir chamber 101, enabling the shock absorber body 20 to compress rapidly and reducing the vibration of the vehicle 1000. When the shock absorber body 20 is extended, the drive assembly can quickly drive the first piston 2 toward the reservoir chamber 101, so that the hydraulic oil in the reservoir chamber 101 can be quickly replenished into the first hydraulic chamber 201.

[0057] It should be noted that, since the volumes of the first hydraulic chamber 201 and the second hydraulic chamber 202 will change when the shock absorber body 20 is compressed and extended, the reservoir 101 is connected to the second hydraulic chamber 202, and hydraulic oil can flow between the reservoir 101 and the second hydraulic chamber 202 to compensate for the change in the volume of the second hydraulic chamber 202.

[0058] In some examples, the first hydraulic chamber 201 is connected to the reservoir chamber 101, and the reservoir chamber 101 is connected to the second hydraulic chamber 202 through a hydraulic channel between the second cylinder 61 and the outer casing 62.

[0059] In some examples, the drive component can be an electromagnetic drive component, a hydraulic drive component, a pneumatic drive component, etc.

[0060] Specifically, when the drive assembly is an electromagnetic drive assembly, a coil 31 can be connected to one of the first piston 2 and the first cylinder 1, and a magnetic element 32 can be connected to the other. When current flows through the coil 31 in different directions, it interacts with the magnetic element 32, driving the first piston 2 to move in different directions. When the drive assembly is a hydraulic drive assembly, the energy storage chamber 102 can be connected to a hydraulic assembly. Hydraulic oil can be introduced into and extracted from the energy storage chamber 102 through the hydraulic assembly to change the pressure inside the energy storage chamber 102, thereby driving the first piston 2 to move. When the drive assembly is a pneumatic drive assembly, the energy storage chamber 102 can be connected to a pneumatic assembly. Gas can be introduced into and extracted from the energy storage chamber 102 through the pneumatic assembly to change the pressure inside the energy storage chamber 102, thereby driving the first piston 2 to move.

[0061] In some implementations, see Figure 2 and Figure 3 The driving component includes a coil 31 and a magnetic element 32. One of the coil 31 and the magnetic element 32 is connected to the first piston 2, and the other is connected to the first cylinder 1. The coil 31 and the magnetic element 32 cooperate to drive the first piston 2 to move.

[0062] In the above scheme, the driving component includes a coil 31 and a magnetic element 32. By cooperating with the coil 31 and the magnetic element 32, the response speed of the driving component can be improved compared with driving components using other structures, thereby improving the response speed of the energy storage device 10 when the damper body 20 is activated.

[0063] Specifically, the interaction between coil 31 and magnetic component 32 is achieved by energizing coil 31 to generate a magnetic field that interacts with magnetic component 32. Compared to hydraulic and pneumatic drive assemblies, electromagnetic drive assemblies establish electromagnetic force more quickly after coil 31 is energized, and the electromagnetic force decays more rapidly when coil 31 is de-energized. Pneumatic and hydraulic drive assemblies, due to the compressibility of gases and liquids, exhibit a certain degree of lag.

[0064] In addition, compared with other types of drive components, the electromagnetic drive component with coil 31 and magnetic component 32 has a simpler structure, occupies less space, and can improve the integration of the energy storage device 10.

[0065] In some examples, the magnetic component 32 is a permanent magnet.

[0066] In some examples, coil 31 is connected to the first cylinder 1, and magnetic component 32 is connected to the first piston 2. When coil 31 is energized, it cooperates with magnetic component 32 to drive the first piston 2 to move along the first cylinder 1.

[0067] In other examples, coil 31 is connected to the first piston 2, and magnetic component 32 is connected to the first cylinder 1. When coil 31 is energized, it drives the first piston 2 to move along the first cylinder 1 under the action of magnetic component 32.

[0068] It should be noted that the direction of the force between the coil 31 and the magnetic component 32 can be changed by altering the direction of the current flow through the coil 31, thereby causing the first piston 2 to move in different directions. Specifically, when the shock absorber body 20 is compressed, the coil 31 is supplied with current in the first direction. The coil 31 interacts with the magnetic component 32, causing the first piston 2 to move toward the energy storage chamber 102. This increases the volume of the reservoir chamber 101, increases the flow rate of hydraulic oil from the first hydraulic chamber 201 to the reservoir chamber 101, and allows the shock absorber body 20 to compress quickly, reducing the bump intensity of the vehicle 1000. When the shock absorber body 20 extends, the coil 31 is supplied with a second-direction current. The coil 31 interacts with the magnetic component 32, causing the first piston 2 to move away from the energy storage chamber 102, thereby reducing the volume of the reservoir 101 and compressing the hydraulic oil in the reservoir 101. This allows the hydraulic oil to quickly enter the first hydraulic chamber 201 from the reservoir 101, causing the shock absorber body 20 to extend rapidly and increasing the support force on the vehicle 1000.

[0069] The interaction force between coil 31 and magnetic component 32 can be altered by changing the intensity of the current flowing through coil 31, thus adapting to different driving conditions of vehicle 1000. For example, in areas with significant road surface undulations, the volume of the first hydraulic chamber 201 changes considerably, and the stroke of the first piston 2 increases accordingly. This results in greater resistance from the energy storage chamber 102 to the first piston 2. In such cases, a larger current can be supplied to coil 31 to increase the interaction force between coil 31 and magnetic component 32, overcoming the resistance of the energy storage chamber 102. Conversely, in areas with less road surface undulations, the volume of the first hydraulic chamber 201 changes less, and the stroke of the first piston 2 decreases accordingly. The resistance from the energy storage chamber 102 to the first piston 2 is also less, allowing a smaller current to be supplied to coil 31, thereby saving energy.

[0070] In some implementations, see Figure 2 and Figure 3 The coil 31 is located on the first cylinder 1 and is arranged along the circumference of the first piston 2. The magnetic component 32 is connected to the first piston 2.

[0071] In the above scheme, coil 31 is connected to the first cylinder 1, and magnetic component 32 is connected to the first piston 2, thereby improving the stability of the drive assembly.

[0072] Specifically, when the coil 31 is connected to the first piston 2, the coil 31 needs to move with the first piston 2, and the frequent movement of the coil 31 will affect the stability of the electrical connection structure.

[0073] In some examples, a groove can be provided on the outer peripheral surface of the first cylinder 1, and the coil 31 can be wound around the groove.

[0074] In other examples, coil 31 can be connected to the first cylinder 1 by means of limiting pins, adhesive bonding, etc.

[0075] In some examples, the number of magnetic components 32 can be one or more.

[0076] In some examples, the magnetic element 32 can be connected to the end of the first piston 2; alternatively, a central hole can be provided in the first piston 2, and the magnetic element 32 can be connected to the central hole of the first piston 2.

[0077] In some other embodiments, coil 31 is connected to first piston 2, and magnetic element 32 is connected to first cylinder 1.

[0078] In some implementations, see Figure 2 and Figure 3 Along the axial direction of the first piston 2, the first piston 2 can move relative to the first cylinder 1 between a first position and a second position. When the first piston 2 is in the first position or the second position, along the radial direction of the first piston 2, the first piston 2 overlaps at least partially with the coil 31.

[0079] In the above scheme, when the first piston 2 moves to the first position, the second position, and the position between the first and second positions, the first piston 2 overlaps at least partially with the coil 31 along the radial direction of the first piston 2. This stabilizes the electromagnetic force of the first piston 2 throughout its stroke, improves the stability of the first piston 2's operation, avoids damping fluctuations in the accumulator 10, and improves the smoothness of the vibration damper 300.

[0080] In some examples, the second position of the first position arm is closer to the connection point between the first cylinder 1 and the damper body 20. When the first piston 2 moves from the first position to the second position, the volume of the reservoir 101 increases; when the first piston 2 moves from the second position to the first position, the volume of the reservoir 101 decreases.

[0081] In some examples, the coil 31 is wound around the outer periphery of the first cylinder 1, wherein the coil 31 can be a single-layer coil 31 or a multi-layer coil 31.

[0082] In some examples, the accumulator 10 also includes a cylinder liner 82, which is fitted onto the outer periphery of the first cylinder body 1, and the coil 31 is located between the cylinder liner 82 and the first cylinder body 1.

[0083] In this embodiment, when the damper 300 is in active control mode, the coil 31 is energized. Through the cooperation of the coil 31 and the magnetic component 32, the movement of the first piston 2 is actively controlled to improve the response speed of the damper 300. When the damper 300 is in non-active control mode, the coil 31 is de-energized. During compression and extension, the damper body 20 drives the magnetic component 32 to reciprocate relative to the coil 31 through the first piston 2. The coil 31 cuts the magnetic field of the magnetic component 32 to generate an induced current, thereby realizing the energy feeding of the energy storage device 10.

[0084] In some implementations, see Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The accumulator 10 also includes a slide valve assembly 4, which is connected between the accumulator 10 and the damper body 20. The slide valve assembly 4 is provided with a first throttling channel and a second throttling channel. The liquid storage chamber 101, the first hydraulic chamber 201 and the second hydraulic chamber 202 are all connected to the first throttling channel and the second throttling channel.

[0085] The slide valve assembly 4 can switch between a first state and a second state. When the slide valve assembly 4 is in the first state, the first throttling channel is open and the second throttling channel is closed. The first hydraulic chamber 201, the reservoir chamber 101, and the second hydraulic chamber 202 are connected in sequence through the first throttling channel. When the slide valve assembly 4 is in the second state, the first throttling channel is closed and the second throttling channel is open. The second hydraulic chamber 202, the reservoir chamber 101, and the first hydraulic chamber 201 are connected in sequence through the second throttling channel.

[0086] In the above scheme, a slide valve assembly 4 is provided between the liquid storage chamber 101 of the accumulator 10 and the first hydraulic chamber 201 and the second hydraulic chamber 202 of the shock absorber body 20. The first throttling channel and the second throttling channel of the slide valve assembly 4 are used to throttle the flow of hydraulic oil in both directions of the shock absorber body 20 during compression and extension, thereby improving the integration of the accumulator 10.

[0087] In related technologies, the hydraulic oil flows in different directions during compression and extension of the shock absorber body 20. To achieve bidirectional flow control, two throttle valves are installed between the reservoir 101 of the accumulator 10 and the shock absorber body 20. These two throttle valves control the flow of hydraulic oil in different directions. In this embodiment, a single slide valve assembly 4 replaces the two throttle valves in the related technologies, improving the integration of the accumulator 10.

[0088] In some examples, when the shock absorber body 20 is compressed, the spool valve assembly 4 is in a first state, and the first hydraulic chamber 201, the reservoir chamber 101, and the second hydraulic chamber 202 are connected through a first throttling channel. At this time, the second piston 71 of the shock absorber body 20 compresses the space of the first hydraulic chamber 201, and the hydraulic oil in the first hydraulic chamber 201 flows to the reservoir chamber 101 and the second hydraulic chamber 202 through the first throttling channel. The flow of hydraulic oil from the first hydraulic chamber 201 to the reservoir chamber 101 is to transmit the impact energy of the road surface on the wheel 200 to the accumulator 10, where the accumulator 10 absorbs, buffers, and releases this energy. The hydraulic oil in the first hydraulic chamber 201 or the reservoir chamber 101 enters the second hydraulic chamber 202 through the first throttling channel, which can compensate for the volume change of the second hydraulic chamber 202 and generate a certain amount of damping.

[0089] When the shock absorber body 20 is compressed, the hydraulic oil is throttled through the first throttling channel of the slide valve assembly 4. By controlling the flow rate, damping is established between the shock absorber body 20 and the accumulator 10, so that the shock absorber 300 maintains a certain support force in a comfortable state, thereby improving the handling of the vehicle 1000.

[0090] When the shock absorber body 20 extends, the spool valve assembly 4 is in the second state, and the first hydraulic chamber 201, the reservoir chamber 101, and the second hydraulic chamber 202 are connected through the second throttling channel. At this time, the second piston 71 of the shock absorber body 20 moves towards the second hydraulic chamber 202, and the hydraulic oil in the second hydraulic chamber 202 and the hydraulic oil in the reservoir chamber 101 flow to the first hydraulic chamber 201 through the second throttling channel. The flow of hydraulic oil during this process is throttled by the second throttling channel to establish extension damping and improve the support of the shock absorber 300 for the vehicle 1000.

[0091] In this embodiment, the first piston 2 is actively driven to move by the action of the coil 31 and the magnetic component 32, so as to accelerate the flow speed of the hydraulic oil, thereby improving the response speed of the shock absorber 300 and improving the comfort of the vehicle 1000.

[0092] In some examples, the valve assembly 4 is moved by the pressure of hydraulic oil to switch between a first state and a second state. For instance, when the shock absorber body 20 is compressed, the pressure in the first hydraulic chamber 201 is greater than the pressure in the second hydraulic chamber 202. The hydraulic oil in the first hydraulic chamber 201 applies pressure to the valve assembly 4, causing at least some components of the valve assembly 4 to move along a first direction to open the first throttling channel and close the second throttling channel. When the shock absorber body 20 is extended, the pressure in the second hydraulic chamber 202 is greater than the pressure in the first hydraulic chamber 201. The hydraulic oil in the second hydraulic chamber 202 applies pressure to the valve assembly 4, causing at least some components of the valve assembly 4 to move along a second direction to open the second throttling channel and close the first throttling channel. The first and second directions may be opposite or intersecting.

[0093] In other examples, the slide valve assembly 4 can be an electromagnetic slide valve assembly 4. When the damper body 20 compresses and extends, the slide valve assembly 4 is actively driven to move by electromagnetic force, causing it to switch between a first state and a second state, thereby improving the response speed of the slide valve assembly 4. For example, when the damper body 20 is compressed, at least some elements in the slide valve assembly 4 are driven to move along a first direction by electromagnetic force to open a first throttling channel and close a second throttling channel; when the damper body 20 extends, at least some elements in the slide valve assembly 4 are driven to move along a second direction by electromagnetic force to open a second throttling channel and close a first throttling channel.

[0094] In some implementations, see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8The slide valve assembly 4 includes a fixing member 41 and a movable component slidably connected to the fixing member 41. The fixing member 41 is provided with a receiving cavity 412 and a first channel 401, a second channel 402 and a third channel 403 communicating with the receiving cavity 412. The first channel 401 is connected to the first hydraulic cavity 201, the second channel 402 is connected to the second hydraulic cavity 202, and the third channel 403 is connected to the liquid storage cavity 101.

[0095] The movable component is disposed within the accommodating cavity 412 and is movable between a first position and a second position. The movable component is provided with a fourth channel 404 and a fifth channel 405. The fourth channel 404 connects the first channel 401 and the third channel 403, and the fifth channel 405 connects the second channel 402 and the third channel 403. The cross-sectional area of ​​the fourth channel 404 is smaller than that of the second channel 402, and the cross-sectional area of ​​the fifth channel 405 is smaller than that of the first channel 401.

[0096] When the moving component is in the first position, it closes the fourth channel 404 and opens the fifth channel 405, and connects the first channel 401, the accommodating cavity 412, the third channel 403, the fifth channel 405 and the second channel 402 in sequence to form a first throttling channel. When the moving component is in the second position, it opens the fourth channel 404 and closes the fifth channel 405, and connects the second channel 402, the accommodating cavity 412, the third channel 403, the fourth channel 404 and the first channel 401 in sequence to form a second throttling channel. When the slide valve assembly 4 is in the first state, the moving component moves to the first position. When the slide valve assembly 4 is in the second state, the moving component moves to the second position.

[0097] In the above scheme, the slide valve assembly 4 includes a fixed part 41 and a moving part. The slide valve assembly 4 switches between the first state and the second state by moving the moving part between the first position and the second position. The movement process of the slide valve assembly 4 is simple and the structure is stable, which improves the stability of the operation of the accumulator 10.

[0098] In some examples, the first channel 401, the second channel 402, and the third channel 403 are arranged axially spaced along the fixing member 41, and the moving assembly is capable of moving axially along the fixing member 41. Specifically, when the damper body 20 is compressed, the moving assembly moves to a first position, and the first throttling channel is opened through the fifth channel 405, allowing the hydraulic oil in the first hydraulic chamber 201 to flow through the first throttling channel to the reservoir chamber 101 and the second hydraulic chamber 202. When the damper body 20 is extended, the moving assembly moves to a second position, and the second throttling channel is opened through the fourth channel 404, allowing the hydraulic oil in the second hydraulic chamber 202 and the reservoir chamber 101 to flow to the first hydraulic chamber 201.

[0099] In other examples, the first channel 401, the second channel 402, and the third channel 403 are arranged circumferentially along the fixed member 41, and the movable component is rotatable relative to the fixed member 41. Specifically, when the damper body is compressed, the movable component rotates to a first position, and the first throttling channel is opened through the fifth channel 405, allowing the hydraulic oil in the first hydraulic chamber 201 to flow through the first throttling channel to the reservoir chamber 101 and the second hydraulic chamber 202. When the damper body 20 is extended, the movable component rotates to a second position, and the second throttling channel is opened through the fourth channel 404, allowing the hydraulic oil in the second hydraulic chamber 202 and the reservoir chamber 101 to flow to the first hydraulic chamber 201.

[0100] In some examples, the number of first channel 401, second channel 402 and third channel 403 can be 1, 2, 3, etc., respectively.

[0101] In some examples, the receiving cavity 412 extends through the fixture 41 along the axial direction of the fixture 41, and the first channel 401, the second channel 402 and the third channel 403 all extend radially along the fixture 41.

[0102] In some examples, when the movable component can move along the axial direction of the fixed member 41, the opening and closing of the fourth channel 404 and the fifth channel 405 can be controlled by controlling the different displacements of different movable components in the movable component when switching from the first position to the second position and from the second position to the first position; when the movable component can rotate relative to the fixed member 41, the opening and closing of the fourth channel 404 and the fifth channel 405 can be controlled by controlling the different rotation angles of different movable components in the movable component when switching from the first position to the second position and from the second position to the first position.

[0103] In some examples, the first channel 401, the reservoir cavity, the third channel 403, the fifth channel 405, and the second channel 402 are sequentially connected to form a first throttling channel. When the damper body 20 is compressed, the hydraulic oil in the first hydraulic chamber 201 flows sequentially through the first channel 401, the reservoir cavity 412, and the third channel 403 to the reservoir cavity 101. A portion of the hydraulic oil in the reservoir cavity 101 and / or a portion of the hydraulic oil in the first hydraulic chamber 201 flows sequentially through the third channel 403, the fifth channel 405, and the second channel 402 to the second hydraulic chamber 202. Since the cross-sectional area of ​​the fifth channel 405 is smaller than that of the first channel 401, a throttling effect is formed through the fifth channel 405 and the first channel 401 to establish damping during the compression of the damper body 20, thereby improving the support performance of the damper 300. In this embodiment, the movement speed of the first piston 2 can also be adjusted by the action of the coil 31 and the magnetic element 32, thereby improving the response speed of the damper 300 during this process.

[0104] In some examples, the second channel 402, the accommodating cavity 412, the third channel 403, the fourth channel 404, and the first channel 401 are sequentially connected to form a second throttling channel. When the damper body 20 extends, the hydraulic oil in the second hydraulic chamber 202 flows sequentially through the second channel 402, the accommodating cavity 412, and the third channel 403 to the reservoir 101, and the hydraulic oil in the reservoir 101 flows sequentially through the third channel 403, the fourth channel 404, and the first channel 401 to the first hydraulic chamber 201. Since the cross-sectional area of ​​the fourth channel 404 is smaller than that of the second channel 402, damping is established through the fourth channel 404 and the second channel 402 when the damper body 20 extends, thereby improving the support performance of the damper 300. Similarly, in this embodiment, the movement speed of the first piston 2 can be adjusted by the action of the coil 31 and the magnetic element 32, thereby improving the response speed of the damper 300 during the process.

[0105] In some implementations, see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The third channel 403 is located between the first channel 401 and the second channel 402; the moving assembly includes a first group of moving members 42 and a second group of moving members 43 arranged along the length direction of the accommodating cavity 412, the first group of moving members 42 is provided with a fourth channel 404, and the second group of moving members 43 is provided with a fifth channel 405.

[0106] When the moving component is in the first position, the first set of moving parts 42 overlaps with the third channel 403 along the first direction so that the first channel 401 and the third channel 403 are connected through the accommodating cavity 412. The second set of moving parts 43 is located in the portion of the accommodating cavity 412 between the second channel 402 and the third channel 403 so as to block the second channel 402 and the third channel 403 from communicating through the accommodating cavity 412. The first direction is perpendicular to the length direction of the accommodating cavity 412.

[0107] When the moving component is in the second position, the second set of moving parts 43 overlaps with the third channel 403 along the first direction so that the second channel 402 and the third channel 403 are connected through the accommodating cavity 412. The first set of moving parts 42 is located in the portion of the accommodating cavity 412 between the first channel 401 and the third channel 403 so as to block the first channel 401 and the third channel 403 from communicating through the accommodating cavity 412.

[0108] In the above scheme, the moving component includes a first set of moving parts 42 and a second set of moving parts 43. By moving the first set of moving parts 42 and the second set of moving parts along the fixed part 41, the opening and closing of the first throttling flow channel and the second throttling flow channel are realized. The structure is simple and the operation is stable, which improves the stability of the vibration damper 300.

[0109] Specifically, since the first set of moving parts 42 and the second set of moving parts 43 move axially along the fixed part 41, they can be moved by the pressure naturally generated on the hydraulic oil when the shock absorber body 20 is compressed and extended. Compared with the solenoid valve, the spool valve assembly 4 can still operate autonomously in the event of a circuit failure in the vehicle 1000, thus improving the stability of the spool valve structure.

[0110] In some examples, along the axial direction of the fixing member 41, the third channel 403 is located between the first channel 401 and the second channel 402. A first set of movable members 42 is connected to the end of the fixing member 41 facing the first channel 401, and a second set of movable members 43 is connected to the end of the fixing member 41 facing the second channel 402. When the damper body 20 is compressed, because the pressure in the first hydraulic chamber 201 is greater than the pressure in the second hydraulic chamber 202, both the first set of movable members 42 and the second set of movable members 43 move along the direction from the first channel 401 to the second channel 402. At this time, the first set of movable members 42 and the third channel 403 overlap radially along the fixing member 41. There is no sealing structure between the first channel 401 and the third channel 403, allowing the first channel 401 and the third channel 403 to communicate through the receiving cavity 412 of the fixing member 41. The second set of moving parts 43 separates the portion of the accommodating cavity 412 between the second channel 402 and the third channel 403, so that the second channel 402 and the third channel 403 are connected through the fifth channel 405.

[0111] When the shock absorber body 20 extends, because the pressure in the second hydraulic chamber 202 is greater than the pressure in the first hydraulic chamber 201, the first set of moving parts 42 and the second set of moving parts 43 move along the second channel 402 toward the first channel 401. At this time, the second set of moving parts 43 overlaps with the third channel 403 radially along the fixing member 41, and there is no sealing structure between the second channel 402 and the third channel 403, so that the second channel 402 and the third channel 403 are connected through the receiving cavity 412. The first set of moving parts 42 partially separates the first channel 401 and the third channel 403 in the receiving cavity 412, so that the first channel 401 and the third channel 403 are connected through the fourth channel 404.

[0112] In some examples, the first set of moving parts 42 is provided with a first sealing part 4221, and the second set of moving parts 43 is provided with a second sealing part 4321. When the moving assembly is in the first position, the first sealing part 4221 overlaps with the third channel 403 radially along the fixing member 41, and the second sealing part 4321 is located between the second channel 402 and the third channel 403, separating the receiving cavity 412 between the second channel 402 and the third channel 403. When the moving assembly is in the second position, the first sealing part 4221 is located between the first channel 401 and the third channel 403, separating the receiving cavity 412 between the first channel 401 and the third channel 403, and the second sealing part 4321 overlaps with the third channel 403 radially along the fixing member 41.

[0113] In some implementations, see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The moving assembly includes a first group of moving parts 42 and a second group of moving parts 43 arranged along the length direction of the accommodating cavity 412. The first group of moving parts 42 is provided with a fourth channel 404, and the second group of moving parts 43 is provided with a fifth channel 405. The first moving member includes a first valve core 421 and a first valve sleeve 422 arranged circumferentially along the first valve core 421. The gap between the first valve core 421 and the first valve sleeve 422 forms a fourth channel 404. The second moving member includes a second valve core 431 and a second valve sleeve 432 arranged circumferentially along the second valve core 431. The gap between the second valve core 431 and the second valve sleeve 432 forms a fifth channel 405. When the moving component is in the first position, the first valve core 421 is in contact with the first valve sleeve 422 to close the fourth channel 404, and the second valve core 431 is separated from the second valve sleeve 432 to open the fifth channel 405. When the movable component is in the second position, the first valve core 421 separates from the first valve sleeve 422 to open the fourth channel 404, and the second valve core 431 engages with the second valve sleeve 432 to close the fifth channel 405.

[0114] In the above scheme, the first set of moving parts 42 includes a first valve core 421 and a first valve sleeve 422. The fourth channel 404 is closed and opened by the contact and separation of the first valve core 421 and the first valve sleeve 422. The second set of moving parts 43 includes a second valve core 431 and a second valve sleeve 432. The fifth channel 405 is closed and opened by the contact and separation of the second valve core 431 and the second valve sleeve 432. The structure is simple and can reduce the failure rate of the slide valve assembly 4 and improve its stability.

[0115] In some examples, the first sealing part 4221 is provided on the outer peripheral side of the first valve sleeve 422, and the second sealing part 4321 is provided on the outer peripheral side of the second valve sleeve 432.

[0116] In some examples, the first valve sleeve 422 is slidably connected to the fixing member 41, and the first valve core 421 is slidably connected to the first valve sleeve 422. For example, the outer peripheral surface of the first valve sleeve 422 is slidably connected to the inner wall of the accommodating cavity 412 of the fixing member 41, and a portion of the outer peripheral surface of the first valve core 421 is slidably connected to the inner hole of the first valve sleeve 422.

[0117] In other examples, both the first valve sleeve 422 and the first valve core 421 are slidably connected to the fixing member 41. For example, the outer peripheral surface of the first valve sleeve 422 is slidably connected to the inner wall of the accommodating cavity 412 of the fixing member 41. A guide portion 411 is provided between the first channel 401 and the second channel 402 of the fixing member 41. The guide portion 411 is provided with a guide hole 4111. The first valve core 421 is slidably connected to the guide hole 4111.

[0118] In some examples, the first valve sleeve 422 is provided with a third sealing part 4222, and the first valve core 421 is provided with a fourth sealing part 4211. When the moving assembly is in the first position, the third sealing part 4222 and the fourth sealing part 4211 are fitted together to close the fourth channel 404; when the moving assembly is in the second position, the third sealing part 4222 and the fourth sealing part 4211 are separated to open the fourth channel 404.

[0119] For example, the third sealing part 4222 may be provided at one end of the first valve sleeve 422 facing the second set of moving parts 43, and the fourth sealing part 4211 may be provided at one end of the first valve core 421 facing away from the second set of moving parts 43.

[0120] For example, the third sealing part 4222 may be provided in the inner hole of the first valve sleeve 422, and the fourth sealing part 4211 may be provided on the outer peripheral surface of the first valve core 421.

[0121] In some examples, the first valve sleeve 422 is also provided with a sixth channel 4223, which extends radially along the first valve sleeve 422 and connects the inner hole of the first valve sleeve 422 and the first channel 401. When the damper body 20 is compressed, the hydraulic oil in the first hydraulic chamber 201 flows sequentially through the first channel 401, the sixth channel 4223 and the inner hole of the first valve sleeve 422, and applies a thrust along the first set of moving members 42 toward the second set of moving members 43 to the first valve core 421, so that the first valve core 421 moves from the second position to the first position.

[0122] When there are multiple sixth channels 4223, an annular groove 4224 can be provided on the outer circumferential surface of the first valve sleeve 422, and the annular groove 4224 connects multiple sixth channels 4223.

[0123] For example, along the axial direction of the first valve sleeve 422, the annular groove 4224 is located on one side of the first sealing part 4221. When the first set of moving parts 42 is in the first position, along the radial direction of the fixing part 41, the first sealing part 4221 overlaps with the third channel 403. The first channel 401 and the third channel are connected through the gap between the annular groove 4224 and the inner wall of the accommodating cavity 412.

[0124] In some examples, when the fixing member 41 is provided with a guide portion 411, the guide portion 411 is also provided with a seventh channel 4112, the seventh channel 4112 connects the third channel 403 and the guide hole 4111 of the guide portion 411, so that when the damper body 20 extends, the hydraulic oil in the reservoir 101 flows through the third channel 403, the seventh channel 4112 and the guide hole 4111 in sequence, applying a thrust to the first valve core 421 in the direction from the second moving assembly toward the first moving assembly, so that the first valve core 421 moves from the first position to the second position.

[0125] It should be noted that the structure and fitting method of the second valve core 431 and the second valve sleeve 432 can refer to the structure and fitting method of the first valve core 421 and the first valve sleeve 422, and will not be repeated here.

[0126] In some examples, the spool valve assembly 4 further includes a first limiting member 44 and a second limiting member 45. The first limiting member 44 is located on the side of the first set of moving members 42 away from the second set of moving members 43, and the second limiting member 45 is located on the side of the second set of moving members 43 away from the first set of moving members 42. The first limiting member 44 includes a first limiting portion 441 and a second limiting portion 442, with the first limiting portion 441 being closer to the second set of moving members 43 than the second limiting portion 442. When the first set of moving members 42 is in the second position, one end of the first valve sleeve 422 abuts against the second limiting portion 442, and one end of the first valve core 421 abuts against the first limiting portion 441. Due to the different dimensions of the first limiting portion 441 and the second limiting portion 442 along the axial direction of the fixing member 41, the first valve sleeve 422 and the first valve stem are separated.

[0127] It should be noted that the structure of the second limiting member 45 can be set with reference to the structure of the first limiting member 44, and will not be described in detail here.

[0128] In some specific examples, the first valve core 421 includes a valve stem portion 4212 and a fourth sealing portion 4211. The fourth sealing portion 4211 is located on the outer periphery of the valve stem portion 4212 and is used to cooperate with the first valve sleeve 422. One end of the valve stem portion 4212 facing the second set of moving members 43 is used to cooperate with the guide portion 411 for guidance, and the other end of the valve stem portion 4212 away from the second set of moving members 43 is used to cooperate with the first limiting member 44 to limit the displacement position of the first valve core 421.

[0129] In some examples, the slide valve assembly 4 also includes a first set of elastic elements and a second set of elastic elements, wherein the first set of elastic elements is used to assist the first set of moving elements 42 to move between a first position and a second position, and the second set of elastic elements is used to assist the second set of moving elements 43 to move between a first position and a second position.

[0130] For example, the first set of elastic members includes a first elastic member 46 and a second elastic member 47. The first elastic member 46 is disposed between the first valve sleeve 422 and the first limiting member 44, and the second elastic member 47 is disposed between the first valve core 421 and the guide portion 411 of the fixing member 41. The first elastic member 46 assists the first set of moving members 42 to move toward the second set of moving members 43, and the second elastic member 47 assists the first set of moving members 42 to move away from the second set of moving members 43.

[0131] The first elastic element 46 and the second elastic element 47 can be steel wire springs, disc springs, etc.

[0132] It should be noted that the structure and arrangement of the second set of elastic elements can refer to the structure and arrangement of the first set of elastic elements, and will not be repeated here.

[0133] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0134] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy storage device suitable for installation in a shock absorber (300) of a vehicle, the shock absorber (300) comprising a shock absorber body (20) having a first hydraulic chamber (201) and a second hydraulic chamber (202), characterized in that, The accumulator includes a first cylinder (1), a first piston (2) and a drive assembly. The first piston (2) is disposed in the first cylinder (1) and can slide in the first cylinder (1). The first piston (2) is sealed to the first cylinder (1) and forms a liquid storage chamber (101). The first hydraulic chamber (201) and the second hydraulic chamber (202) are both connected to the liquid storage chamber (101). The drive assembly is connected to the first piston (2) for driving the first piston (2) to move axially along the first cylinder (1).

2. The energy storage device according to claim 1, characterized in that, The drive assembly includes a coil (31) and a magnetic element (32). One of the coil (31) and the magnetic element (32) is connected to the first piston (2), and the other is connected to the first cylinder (1). The coil (31) and the magnetic element (32) cooperate to drive the first piston (2) to move.

3. The energy storage device according to claim 2, characterized in that, The coil (31) is disposed on the first cylinder (1) and arranged along the circumference of the first piston (2), and the magnetic element (32) is connected to the first piston (2).

4. The energy storage device according to claim 3, characterized in that, Along the axial direction of the first piston (2), the first piston (2) is movable relative to the first cylinder (1) between a first position and a second position. When the first piston (2) is in the first position or the second position, along the radial direction of the first piston (2), the first piston (2) overlaps at least partially with the coil (31).

5. The energy storage device according to any one of claims 1-4, characterized in that, The accumulator also includes a slide valve assembly (4), which is connected between the accumulator and the damper body (20). The slide valve assembly (4) is provided with a first throttling channel and a second throttling channel. The liquid storage chamber (101), the first hydraulic chamber (201) and the second hydraulic chamber (202) are all connected to the first throttling channel and the second throttling channel. The slide valve assembly (4) can switch between a first state and a second state. When the slide valve assembly (4) is in the first state, the first throttling channel is open and the second throttling channel is closed. The first hydraulic chamber (201), the liquid storage chamber (101) and the second hydraulic chamber (202) are connected in sequence through the first throttling channel. When the slide valve assembly (4) is in the second state, the first throttling channel is closed and the second throttling channel is open, and the second hydraulic chamber (202), the liquid storage chamber (101) and the first hydraulic chamber (201) are connected in sequence through the second throttling channel.

6. The energy storage device according to claim 5, characterized in that, The slide valve assembly (4) includes a fixing member (41) and a movable component slidably connected to the fixing member (41). The fixing member (41) is provided with a receiving cavity (412) and a first channel (401), a second channel (402) and a third channel (403) communicating with the receiving cavity (412). The first channel (401) is connected to the first hydraulic cavity (201), the second channel (402) is connected to the second hydraulic cavity (202), and the third channel (403) is connected to the liquid storage cavity (101). The movable component is disposed within the accommodating cavity (412) and is movable between a first position and a second position. The movable component is provided with a fourth channel (404) and a fifth channel (405). The fourth channel (404) connects the first channel (401) and the third channel (403). The fifth channel (405) connects the second channel (402) and the third channel (403). The cross-sectional area of ​​the fourth channel (404) is smaller than that of the second channel (402). The cross-sectional area of ​​the fifth channel (405) is smaller than that of the first channel (401). When the moving component is in the first position, the moving component closes the fourth channel (404), opens the fifth channel (405), and connects the first channel (401), the accommodating cavity (412), the third channel (403), the fifth channel (405), and the second channel (402) in sequence to form the first throttling channel. When the moving component is in the second position, the moving component opens the fourth channel (404), closes the fifth channel (405), and connects the second channel (402), the accommodating cavity (412), the third channel (403), the fourth channel (404), and the first channel (401) in sequence to form the second throttling channel. When the slide valve assembly (4) is in the first state, the moving component moves to the first position; when the slide valve assembly (4) is in the second state, the moving component moves to the second position.

7. The energy storage device according to claim 6, characterized in that, The third channel (403) is located between the first channel (401) and the second channel (402); The moving assembly includes a first group of moving parts (42) and a second group of moving parts (43) arranged along the length direction of the accommodating cavity (412). The first group of moving parts (42) is provided with the fourth channel (404), and the second group of moving parts (43) is provided with the fifth channel (405). When the movable component is located in the first position, the first set of movable members (42) overlaps with the third channel (403) along the first direction, so that the first channel (401) and the third channel (403) are connected through the accommodating cavity (412). The second set of movable members (43) is located in the portion of the accommodating cavity (412) between the second channel (402) and the third channel (403), so as to block the second channel (402) and the third channel (403) from communicating through the accommodating cavity (412). The first direction is perpendicular to the length direction of the accommodating cavity (412). When the movable component is in the second position, the second set of movable parts (43) overlaps with the third channel (403) in the first direction so that the second channel (402) and the third channel (403) are connected through the accommodating cavity (412). The first set of movable parts (42) is located in the portion of the accommodating cavity (412) between the first channel (401) and the third channel (403) to block the first channel (401) and the third channel (403) from communicating through the accommodating cavity (412).

8. The energy storage device according to claim 6 or 7, characterized in that, The moving assembly includes a first group of moving parts (42) and a second group of moving parts (43) arranged along the length direction of the accommodating cavity (412). The first group of moving parts (42) is provided with the fourth channel (404), and the second group of moving parts (43) is provided with the fifth channel (405). The first moving member includes a first valve core (421) and a first valve sleeve (422) arranged circumferentially along the first valve core (421), the gap between the first valve core (421) and the first valve sleeve (422) forms the fourth channel (404), and the second moving member includes a second valve core (431) and a second valve sleeve (432) arranged circumferentially along the second valve core (431), the gap between the second valve core (431) and the second valve sleeve (432) forms the fifth channel (405). When the moving component is in the first position, the first valve core (421) is in contact with the first valve sleeve (422) to close the fourth channel (404), and the second valve core (431) is separated from the second valve sleeve (432) to open the fifth channel (405). When the movable component is in the second position, the first valve core (421) separates from the first valve sleeve (422) to open the fourth channel (404), and the second valve core (431) fits into the second valve sleeve (432) to close the fifth channel (405).

9. A vibration damper, characterized in that, The energy storage device (10) includes any one of claims 1-8.

10. A vehicle, characterized in that, Includes the energy storage device (10) according to any one of claims 1-8, and / or the vibration damper (300) according to claim 9.

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