Energy accumulator, hydraulic system and vehicle

Abstract

The utility model discloses an energy accumulator, a hydraulic system and a vehicle. The energy accumulator comprises a shell, a diaphragm and a valve, a main cavity, a first cavity and a second cavity are formed in the shell, and the main cavity is provided with a main cavity opening allowing a medium to enter and exit from the main cavity. The main chamber and the first chamber are separated through a diaphragm, and the diaphragm can deform. The second cavity and the first cavity are selectively communicated or isolated through a valve. According to the energy accumulator, the second cavity and the valve are arranged, the valve can control the first cavity and the second cavity to be communicated or isolated, and therefore the pressure in the first cavity and the pressure in the second cavity can be adjusted, the pressure in the first cavity can be continuously adjusted in real time, and therefore the energy accumulator can have different rigidity characteristics; the rigidity of the energy accumulator can be continuously adjusted in real time.

Description

Technical Field

[0001] This application relates to the technical field of accumulators, and more particularly, to an accumulator, a hydraulic system, and a vehicle. Background Art

[0002] In related technologies, two air valves are mostly used to adjust the stiffness of an accumulator. However, this solution requires additional air charging or discharging of the accumulator. By charging and discharging air, the pressure in the chamber is changed. The structure is relatively complex and the stiffness adjustment cannot be achieved in real time. Therefore, there is room for improvement. Summary of the Utility Model

[0003] This application aims to at least partly solve one of the above technical problems in the prior art. To this end, this application provides an accumulator, which is conducive to achieving real-time adjustable stiffness.

[0004] The accumulator according to an embodiment of this application includes a housing, a diaphragm, and a valve. A main chamber, a first chamber, and a second chamber are formed in the housing. The main chamber has a main chamber opening through which a medium can enter and exit the main chamber. The main chamber is separated from the first chamber by the diaphragm, and the diaphragm can deform. The second chamber and the first chamber are selectively connected or isolated by the valve.

[0005] The accumulator according to an embodiment of this application is provided with a second chamber and a valve. The valve can control the connection or isolation between the first chamber and the second chamber, so that the pressures in the first chamber and the second chamber can be adjusted, and the pressure in the first chamber can be adjusted in real time and continuously. Thus, the accumulator can have different stiffness characteristics, and the real-time and continuous adjustment of the stiffness of the accumulator can be achieved.

[0006] According to an embodiment of this application, the housing includes a first housing and a second housing. A diaphragm deformation chamber is formed in the first housing. The second housing is connected to the first housing. The diaphragm is arranged in the diaphragm deformation chamber. One side of the diaphragm is the first chamber and the other side is the main chamber. The second chamber is formed in the second housing.

[0007] According to an embodiment of this application, the second housing includes an intermediate housing part and an outer housing part. The intermediate housing part is connected to the first housing. The first housing and the intermediate housing part enclose the diaphragm deformation chamber. The outer housing part is connected to the intermediate housing part. The outer housing part and the intermediate housing part enclose the second chamber.

[0008] According to an embodiment of the present application, the second housing is provided with an intermediate through hole, the intermediate through hole communicates with the first chamber, the valve includes a valve seat and a valve core, the valve seat is installed on the housing, and the valve core is movably installed on the valve seat to open or close the intermediate through hole.

[0009] According to an embodiment of the present application, the valve seat is fixed to the second housing, at least part of the valve seat is located in the second chamber, the interior of the valve seat has a valve seat passage, the valve seat passage extends to the intermediate through hole, the valve core is disposed in the valve seat passage, the valve seat is provided with a valve seat hole, the valve seat hole communicates the second chamber with the valve seat passage, and the valve core can move to a first position where the valve seat hole is isolated from the intermediate through hole and a second position where the valve seat hole communicates with the intermediate through hole.

[0010] According to an embodiment of the present application, the main chamber opening is formed in the first housing, and a joint is installed at the main chamber opening, and the joint protrudes from the outer surface of the first housing.

[0011] According to an embodiment of the present application, the diaphragm is fixed to the inner wall of the first housing and / or the second housing by a diaphragm fixing ring.

[0012] According to an embodiment of the present application, the second chamber is located on a side of the first chamber away from the main chamber.

[0013] According to an embodiment of the present application, there are one or more second chambers, and each second chamber and the first chamber can be selectively communicated or isolated through the corresponding valve.

[0014] According to an embodiment of the present application, an inflation and exhaust valve is further connected to the first chamber and / or the second chamber, and the inflation and exhaust valve selectively connects the corresponding chamber to the outside of the housing or isolates it.

[0015] According to an embodiment of the present application, the housing includes a main housing and an external housing, a diaphragm deformation chamber is formed inside the main housing, the diaphragm is disposed in the diaphragm deformation chamber to divide the diaphragm deformation chamber into the first chamber and the main chamber, the second chamber is formed in the external housing, the external housing has an external interface for connecting to the main housing, and a valve is provided at the external interface, and the valve is used to open or close the external interface.

[0016] A hydraulic system according to another embodiment of the present application includes the above-mentioned accumulator.

[0017] According to the hydraulic system of an embodiment of the present application, the accumulator is provided with a second chamber and a valve. The valve can control the communication or isolation between the first chamber and the second chamber, so as to adjust the pressures in the first chamber and the second chamber, making the pressure in the first chamber adjustable in real time and continuously. Thus, the accumulator can have different stiffness characteristics, realizing the real-time and continuous adjustment of the stiffness of the accumulator.

[0018] A vehicle according to another embodiment of the present application includes the above-mentioned hydraulic system.

[0019] According to the vehicle of an embodiment of the present application, the accumulator of its hydraulic system is provided with a second chamber and a valve. The valve can control the communication or isolation between the first chamber and the second chamber, so as to adjust the pressures in the first chamber and the second chamber, making the pressure in the first chamber adjustable in real time and continuously. Thus, the accumulator can have different stiffness characteristics, realizing the real-time and continuous adjustment of the stiffness of the accumulator.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0021] Figure 1 is a schematic diagram of an accumulator according to an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of an accumulator according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of an accumulator according to an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of an accumulator according to some embodiments;

[0025] Figure 5 is a schematic diagram of an accumulator according to some embodiments;

[0026] Figure 6 is a schematic diagram of an accumulator according to some embodiments;

[0027] Figure 7 is a schematic diagram of an accumulator according to some embodiments;

[0028] Figure 8 is a schematic diagram of an accumulator according to some embodiments;

[0029] Figure 9 is a schematic diagram of an accumulator according to some embodiments;

[0030] Figure 10 is a schematic diagram of the hydraulic system according to an embodiment of the present application;

[0031] Figure 11 It is a schematic diagram of a vehicle according to an embodiment of the present application.

[0032] Reference numerals:

[0033] Vehicle 1000, hydraulic system 100, accumulator 10, housing 1, first housing 11, second housing 12, intermediate housing portion 121, outer housing portion 122, intermediate through hole 123, main housing 13, external housing 14, external interface 141, diaphragm 2, valve 3, valve seat 31, valve seat passage 311, valve seat hole 312, valve core 32, diaphragm deformation chamber 41, main chamber 411, first chamber 412, second chamber 42, main chamber opening 43, joint 44, diaphragm fixing ring 5, inflation and exhaust valve 6. Detailed implementation manners

[0034] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0035] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] Below in conjunction with Figures 1 - 11 Describe in detail the accumulator 10 according to an embodiment of the present application, the hydraulic system 100 having the accumulator 10, and the vehicle 1000 having the hydraulic system 100.

[0037] Refer to Figures 1 - 3 As shown, the accumulator 10 according to an embodiment of the present application includes a housing 1, a diaphragm 2, and a valve 3. A main chamber 411, a first chamber 412, and a second chamber 42 are formed in the housing 1. The main chamber 411 has a main chamber opening 43 through which a medium can enter and exit the main chamber 411. The main chamber 411 is separated from the first chamber 412 by the diaphragm 2, and the diaphragm 2 can deform. The second chamber 42 and the first chamber 412 are selectively connected or isolated by the valve 3.

[0038] Taking the example of connecting the accumulator 10 to the hydraulic oil circuit of the hydraulic system 100 to illustrate the working principle of the accumulator 10. During the working process of the accumulator 10, the valve 3 is closed, and the first chamber 412 and the main chamber 411 form a conventional accumulator. When it is necessary to adjust the stiffness of the accumulator, the valve 3 is opened. Under the action of the oil pressure, the diaphragm 2 compresses the first chamber 412, and at the same time increases the pressures of the first chamber 412 and the second chamber 42. At this time, the valve 3 is closed, and an accumulator with a reduced stiffness is obtained. Similarly, an accumulator with an increased stiffness can also be obtained according to needs.

[0039] It can be understood that the stiffness of the accumulator 10 generally refers to the stiffness of the gas inside it, which describes the resistance ability of the accumulator 10 to pressure changes in the hydraulic system 100. In this application, the gas stiffness in the first chamber 412 directly reflects the stiffness of the accumulator 10. Specifically, the gas stiffness is the ratio between the gas volume change and the gas pressure change, that is, the greater the stiffness, the smaller the pressure change under the same volume change, and vice versa.

[0040] Specifically, as Figure 1 shown, at this time the accumulator 10 corresponds to a working state of the hydraulic system 100. At this time, the hydraulic system 100 is in the first working condition, where the pressure of the second chamber 42 is P11, the volume is V11, the pressure of the first chamber 412 is P21, the volume is V21, the pressure of the main chamber 411 is P31, and the volume is V31. At this time, the pressures of the first chamber 412 and the main chamber 411 are equal, that is, P21 = P31.

[0041] Refer to Figure 2As shown, when the pressure of the hydraulic oil circuit increases, the pressure P31 in the main chamber 411 increases to P32. During the process of the pressure increase in the main chamber 411, the diaphragm 2 deforms towards the second chamber 42, compressing the volume of the first chamber 412 to V22, and at the same time increasing the pressure in the first chamber 412 to P22. At this time, the valve 3 is opened to connect the second chamber 42 and the first chamber 412. At this time, the second chamber 42, the first chamber 412, and the main chamber 411 will reach a pressure balance state. At this time, the hydraulic system 100 is in the second working condition. And at this time, the pressure in the second chamber 42 is P12, the volume is V11, the pressure in the first chamber 412 is P22, the volume is V22, the pressure in the main chamber 411 is P32, and the volume is V32. Among them, P12 = P22 = P32, V22 < V21, V32 > V31. The valve 3 is closed. At this time, the pressure in the second chamber 42 will be maintained at the state of P12. When the pressure of the hydraulic oil circuit returns to the first working condition, the volume of the first chamber 412 will increase compared with V22 and decrease compared with V21. At this time, compared with the accumulator under the first working condition, the stiffness of the accumulator has changed, thus realizing the adjustable stiffness of the accumulator 10.

[0042] Figure 3 The schematic cross-sectional view of the accumulator 10 when the hydraulic system 100 shown is in the third working condition. When the pressure of the hydraulic oil circuit decreases, the accumulator 10 compensates for its pressure, the diaphragm 2 deforms downward, and the pressures in the first chamber 412 and the second chamber 42 decrease. At this time, the valve 3 is closed, and another accumulator with a different stiffness can be obtained.

[0043] Through Figure 2 and Figure 3 the above two examples, the basic working principle of the accumulator 10 with adjustable stiffness of the present application can be understood. When the first chamber 412 is under different pressures, by opening or closing the valve 3, accumulators 10 with different stiffnesses can be obtained to meet the hydraulic use environments with different stiffness requirements.

[0044] In some embodiments, the valve 3 can be a solenoid valve.

[0045] In some embodiments, the accumulator 10 is connected to the hydraulic oil circuit of the hydraulic system 100. The medium in the main chamber 411 is oil, and the media in the first chamber 412 and the second chamber 42 are gases with compressible volumes.

[0046] Optionally, the diaphragm 2 can be a rubber diaphragm or a silica gel diaphragm, etc.

[0047] The structure of the first chamber 412 and the main chamber 411 is similar to that of a common accumulator. The added second chamber 42 and valve 3 make the accumulator 10 have adjustable stiffness, which can achieve the effect of combining multiple accumulators and can be continuously adjustable. Compared with the working conditions of using multiple traditional accumulators in combination, it has a smaller volume. More advantageously, the accumulator 10 with adjustable stiffness can theoretically achieve countless combined working conditions of traditional accumulators.

[0048] In the related art, two gas valves are often used to adjust the stiffness of the accumulator. However, this solution requires additional air injection or deflation of the accumulator, and the pressure in the chamber is changed by charging and discharging air. The structure is relatively complex and cannot achieve real-time adjustable stiffness.

[0049] According to the accumulator 10 of the embodiment of the present application, a second chamber 42 and a valve 3 are provided. The valve 3 can control the communication or isolation between the first chamber 412 and the second chamber 42, so as to adjust the pressure in the first chamber 412 and the second chamber 42, make the pressure in the first chamber 412 be adjustable in real time and continuously, and further make the pressure in the main chamber 411 be adjustable in real time and continuously. Thus, the accumulator 10 can have different stiffness characteristics, realize the real-time and continuous adjustment of the stiffness of the accumulator 10, and can achieve various combined working conditions of accumulators.

[0050] In some embodiments of the present application, refer to Figure 1 As shown, the housing 1 includes a first housing 11 and a second housing 12. A diaphragm deformation chamber 41 is formed in the first housing 11. The second housing 12 is connected to the first housing 11. A diaphragm 2 is disposed in the diaphragm deformation chamber 41. One side of the diaphragm 2 is the first chamber 412 and the other side is the main chamber 411. The diaphragm 2 divides the diaphragm deformation chamber 41 into the first chamber 412 and the main chamber 411. The second chamber 42 is formed in the second housing 12. In other words, the housing 1 is disassembled into the first housing 11 and the second housing 12, making the first housing 11 and the second housing 12 independent of each other, and different types of the first housing 11 or the second housing 12 can be replaced according to the requirements of different accumulators 10. Thus, the shape, size, material, etc. of the first housing 11 and the second housing 12 can be changed according to the stiffness or usage requirements of the accumulator 10, making the adjustable range of the stiffness of the accumulator 10 wider, and the accumulator 10 can adapt to more complex environments. And because the diaphragm 2 is located in the diaphragm deformation chamber 41 surrounded by the first housing 11 and the second housing 12, when the first housing 11 and the second housing 12 are disassembled, it is convenient to install and disassemble the diaphragm 2.

[0051] In some embodiments of the present application, refer to Figure 1As shown, the second housing 12 includes an intermediate housing portion 121 and an outer housing portion 122. The intermediate housing portion 121 is connected to the first housing 11, and the first housing 11 and the intermediate housing portion 121 enclose a diaphragm deformation chamber 41. The outer housing portion 122 is connected to the intermediate housing portion 121, and the outer housing portion 122 and the intermediate housing portion 121 enclose a second chamber 42. In other words, by disassembling the second housing 12 into the intermediate housing portion 121 and the outer housing portion 122 to make them independent of each other, the shapes, dimensions, materials, etc. of the intermediate housing portion 121 and the outer housing portion 122 can be changed according to different requirements of the accumulator 10, so that the adjustable range of the stiffness of the accumulator 10 is wider, and the accumulator 10 can adapt to more complex environments.

[0052] In some embodiments of the present application, refer to Figure 1 As shown, the second housing 12 is provided with an intermediate through hole 123, and the intermediate through hole 123 communicates with the first chamber 412. The valve 3 includes a valve seat 31 and a valve core 32. The valve seat 31 is installed on the housing 1, and the valve core 32 is movably installed on the valve seat 31. The valve core 32 is used to open or close the intermediate through hole 123. Thus, the intermediate through hole 123 enables the first chamber 412 to communicate with the second chamber 42, and the valve 3 can change the pressure magnitudes in the first chamber 412 and the second chamber 42 by controlling the communication or isolation of the intermediate through hole 123, thereby adjusting the stiffness of the accumulator 10 and realizing real-time adjustment of the stiffness of the accumulator 10.

[0053] In some embodiments of the present application, refer to Figure 1 As shown, the valve seat 31 is fixed to the second housing 12, and the valve seat 31 is at least partially located in the second chamber 42. The interior of the valve seat 31 has a valve seat passage 311, and the valve seat passage 311 extends to the intermediate through hole 123. The valve core 32 is disposed in the valve seat passage 311. The valve seat 31 is provided with a valve seat hole 312, and the valve seat hole 312 communicates the second chamber 42 with the valve seat passage 311. The valve core 32 can move to a first position where the valve seat hole 312 is isolated from the intermediate through hole 123 and a second position where the valve seat hole 312 communicates with the intermediate through hole 123. In other words, the communication or isolation between the valve seat hole 312 and the intermediate through hole 123 can be controlled by the position change of the valve core 32 between the first position and the second position, and further the communication or isolation between the first chamber 412 and the second chamber 42 can be controlled. Thus, the pressure changes in the first chamber 412 and the second chamber 42 can be controlled by the valve core 32, thereby adjusting the stiffness of the accumulator 10 in real time.

[0054] In some embodiments of the present application, refer to Figure 1As shown, the main chamber opening 43 is provided on the first housing 11. A connector 44 is installed at the main chamber opening 43, and the connector 44 protrudes from the outer surface of the first housing 11. Thus, the main chamber 411 can be connected to external components or pipelines through the main chamber opening 43 and the connector 44. For example, the connector 44 can be connected to a hydraulic oil circuit. The connector 44 protruding from the outer surface of the first housing 11 facilitates the connection of the connector 44 to other components or pipelines.

[0055] A decrease in the pressure of the main chamber 411 causes the diaphragm 2 to move towards the main chamber opening 43, thereby increasing the volume of the first chamber 412 and decreasing the pressure of the first chamber 412; an increase in the pressure of the main chamber 411 causes the diaphragm 2 to move towards the first chamber 412, thereby decreasing the volume of the first chamber 412 and increasing the pressure of the first chamber 412. Then, by controlling the opening and closing of the valve 3, the communication or isolation between the first chamber 412 and the second chamber 42 is adjusted, thereby adjusting the stiffness of the accumulator 10.

[0056] In some embodiments of the present application, refer to Figure 1 As shown, the diaphragm 2 is fixed to the inner wall of the first housing 11 and / or the second housing 12 through a diaphragm fixing ring 5. Thus, the diaphragm fixing ring 5 tightly installs the diaphragm 2 on the inner wall of the first housing 11 and / or the second housing 12, enabling the diaphragm 2 to divide the diaphragm deformation chamber 41 into the first chamber 412 and the main chamber 411, and ensuring that the first chamber 412 and the main chamber 411 are not in communication. Thus, when the pressure in the main chamber 411 changes, the pressure of the first chamber 412 can only be changed by the position change of the diaphragm 2, and there will be no situation where the internal gases of the main chamber 411 and the first chamber 412 are exchanged to achieve pressure balance.

[0057] In some embodiments, the diaphragm 2 is fixed to the inner wall of the first housing 11 through a diaphragm fixing ring 5.

[0058] In some embodiments, the diaphragm 2 is fixed to the inner wall of the second housing 12 through a diaphragm fixing ring 5.

[0059] In some embodiments, the diaphragm 2 is fixed to the inner walls of the first housing 11 and the second housing 12 through a diaphragm fixing ring 5.

[0060] In some embodiments of the present application, refer to Figure 1 As shown, the second chamber 42 is located on the side of the first chamber 412 away from the main chamber 411. Thus, the main chamber 411, the first chamber 412, and the second chamber 42 are all in the same arrangement direction, avoiding the overly complex structure of the housing 1 and saving the installation space of the accumulator 10.

[0061] In some embodiments of the present application, refer to Figure 1 、 Figure 4 、 Figure 5As shown, there are one or more second chambers 42, and each second chamber 42 is selectively connected or isolated from the first chamber 412 through a corresponding valve 3. Thus, by controlling the connection or isolation of the corresponding second chamber 42 and the first chamber 412 through the valve 3, the pressure in the corresponding second chamber 42 can be changed, so that the volume of the first chamber 412 changes accordingly, and further the stiffness of the accumulator 10 can be adjusted. The multiple second chambers 42 are independent of each other and are all connected or isolated from the first chamber 412 through corresponding valves 3, so that any second chamber 42 can be combined with the first chamber 412 alone to adjust the stiffness of the accumulator 10. The setting of the multiple second chambers 42 enables the first chamber 412 to be selectively connected or isolated from any second chamber 42, thereby adjusting the stiffness of the accumulator 10, increasing the adjustable stiffness range of the accumulator 10, and making the application scenarios more extensive.

[0062] In some embodiments, as Figure 1 shown, there is one second chamber 42.

[0063] In some embodiments, as Figure 4 shown, there are two second chambers 42.

[0064] In some embodiments, as Figure 5 shown, there are three second chambers 42.

[0065] It can be understood that the second chamber 42 can also be four, five or more. Details are not described one by one here.

[0066] In some embodiments of the present application, referring to Figure 1 、 Figures 6 - 8 shown, an inflation and exhaust valve 6 is also connected to the first chamber 412 and / or the second chamber 42. The inflation and exhaust valve 6 selectively connects or isolates the corresponding chamber from the outside of the housing 1. Thus, by providing the inflation and exhaust valve 6, the corresponding chamber can be inflated or exhausted, so as to control the pressure in the corresponding chamber, and further adjust the stiffness of the accumulator 10 more conveniently, increase the adjustable stiffness range of the accumulator 10, and make the application scenarios more extensive.

[0067] In some embodiments, as Figure 6 shown, an inflation and exhaust valve 6 is connected to the first chamber 412.

[0068] In some embodiments, as Figure 7 shown, an inflation and exhaust valve 6 is connected to the second chamber 42.

[0069] In some embodiments, as Figure 8 shown, one inflation and exhaust valve 6 is connected to the first chamber 412, and another inflation and exhaust valve 6 is connected to the second chamber 42.

[0070] In some embodiments of the present application, refer to Figure 9 As shown, the housing 1 includes a main housing 13 and an external housing 14. A diaphragm deformation chamber 41 is formed inside the main housing 13. The diaphragm 2 is disposed within the diaphragm deformation chamber 41 to divide the diaphragm deformation chamber 41 into a first chamber 412 and a main chamber 411. A second chamber 42 is formed inside the external housing 14. The external housing 14 has an external interface 141 for connecting with the main housing 13. A valve 3 is provided at the external interface 141. The valve 3 is used to open or close the external interface 141. Thus, the opening or closing of the valve 3 controls the communication or isolation between the first chamber 412 and the second chamber 42 at the external interface 141, thereby adjusting the pressure magnitudes in the first chamber 412 and the second chamber 42 and adjusting the stiffness of the accumulator 10.

[0071] Refer to Figure 10 As shown, a hydraulic system 100 according to another embodiment of the present application includes the accumulator 10 of the above embodiment.

[0072] In the hydraulic system 100 according to some embodiments of the present application, the accumulator 10 is provided with a second chamber 42 and a valve 3. The valve 3 can control the communication or isolation between the first chamber 412 and the second chamber 42, so as to adjust the pressures in the first chamber 412 and the second chamber 42, making the pressure in the first chamber 412 continuously adjustable in real time. Furthermore, the pressure in the main chamber 411 can be continuously adjustable in real time. Thus, the accumulator 10 can have different stiffness characteristics, realizing the real-time and continuous adjustment of the stiffness of the accumulator 10, and can achieve various working conditions of accumulator combinations.

[0073] In some embodiments, the hydraulic system 100 includes a hydraulic oil circuit that connects to the main chamber 411.

[0074] Refer to Figure 11 As shown, a vehicle 1000 according to another embodiment of the present application includes the hydraulic system 100 of the above embodiment.

[0075] In the vehicle 1000 according to some embodiments of the present application, the accumulator 10 of the hydraulic system 100 is provided with a second chamber 42 and a valve 3. The valve 3 can control the communication or isolation between the first chamber 412 and the second chamber 42, so as to adjust the pressures in the first chamber 412 and the second chamber 42, making the pressure in the first chamber 412 continuously adjustable in real time. Furthermore, the pressure in the main chamber 411 can be continuously adjustable in real time. Thus, the accumulator 10 can have different stiffness characteristics, realizing the real-time and continuous adjustment of the stiffness of the accumulator 10, and can achieve various working conditions of accumulator combinations.

[0076] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, 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, it should not be construed as a limitation to the present application.

[0077] In the present application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0078] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as a limitation to the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An accumulator (10), characterized in that, Comprising: A housing (1) in which a main chamber (411), a first chamber (412) and a second chamber (42) are formed. The main chamber (411) has a main chamber opening (43) for the medium to enter and exit the main chamber (411). A diaphragm (2) that separates the main chamber (411) from the first chamber (412), and the diaphragm (2) is deformable. A valve (3) that selectively connects or isolates the second chamber (42) from the first chamber (412).

2. The accumulator (10) according to claim 1, characterized in that, The housing (1) includes a first housing (11) and a second housing (12). A diaphragm deformation chamber (41) is formed in the first housing (11). The second housing (12) is connected to the first housing (11). The diaphragm (2) is disposed in the diaphragm deformation chamber (41). One side of the diaphragm (2) is the first chamber (412) and the other side is the main chamber (411). The second chamber (42) is formed in the second housing (12).

3. The accumulator (10) according to claim 2, characterized in that, The second housing (12) includes an intermediate housing portion (121) and an outer housing portion (122). The intermediate housing portion (121) is connected to the first housing (11). The first housing (11) and the intermediate housing portion (121) enclose the diaphragm deformation chamber (41). The outer housing portion (122) is connected to the intermediate housing portion (121). The outer housing portion (122) and the intermediate housing portion (121) enclose the second chamber (42).

4. The accumulator (10) according to claim 2 or 3, characterized in that, The second housing (12) is provided with an intermediate through hole (123) that communicates with the first chamber (412). The valve (3) includes a valve seat (31) and a valve core (32). The valve seat (31) is installed on the housing (1). The valve core (32) is movably installed on the valve seat (31) to open or close the intermediate through hole (123).

5. The accumulator (10) according to claim 4, characterized in that, The valve seat (31) is fixed to the second housing (12). The valve seat (31) is at least partially located in the second chamber (42). The interior of the valve seat (31) has a valve seat passage (311) that extends to the intermediate through hole (123). The valve core (32) is disposed in the valve seat passage (311). The valve seat (31) is provided with a valve seat hole (312) that connects the second chamber (42) to the valve seat passage (311). The valve core (32) can move to a first position where the valve seat hole (312) is isolated from the intermediate through hole (123) and a second position where the valve seat hole (312) communicates with the intermediate through hole (123).

6. The accumulator (10) according to claim 2 or 3, characterized in that, The main chamber opening (43) is formed in the first housing (11). A joint (44) is installed at the main chamber opening (43). The joint (44) protrudes from the outer surface of the first housing (11).

7. The accumulator (10) according to claim 2 or 3, characterized in that, The diaphragm (2) is fixed to the inner wall of the first housing (11) and / or the second housing (12) by a diaphragm fixing ring (5).

8. The accumulator (10) according to claim 1, characterized in that, The second chamber (42) is located on a side of the first chamber (412) away from the main chamber (411).

9. The accumulator (10) according to claim 1, characterized in that, There is one or more of the second chambers (42), and each of the second chambers (42) is selectively connected or isolated from the first chamber (412) through a corresponding valve (3).

10. The accumulator (10) according to claim 1, characterized in that, An inflation and exhaust valve (6) is further connected to the first chamber (412) and / or the second chamber (42), and the inflation and exhaust valve (6) selectively connects or isolates the corresponding chamber from the outside of the housing (1).

11. The accumulator (10) according to claim 1, characterized in that, The housing (1) includes a main housing (13) and an external housing (14). A diaphragm deformation chamber (41) is formed inside the main housing (13). The diaphragm (2) is disposed in the diaphragm deformation chamber (41) to divide the diaphragm deformation chamber (41) into the first chamber (412) and the main chamber (411). The second chamber (42) is formed inside the external housing (14). The external housing (14) has an external interface (141) for connecting to the main housing (13). A valve (3) is provided at the external interface (141), and the valve (3) is used to open or close the external interface (141).

12. A hydraulic system (100), characterized in that, It includes the accumulator (10) according to any one of claims 1-11.

13. A vehicle (1000), characterized in that, It includes the hydraulic system (100) according to claim 12.

Images