Solenoid valve, suspension system and vehicle

Abstract

The utility model discloses an electromagnetic valve, a suspension system and a vehicle, and relates to the technical field of valve control. The electromagnetic valve comprises a valve body assembly and a movable part, the valve body assembly is provided with a valve cavity, a first medium channel and a second medium channel, and the valve cavity communicates with the first medium channel and the second medium channel. A first cavity is formed between one end, deviating from the second medium channel, of the movable part and the cavity wall of the valve cavity, a communicating channel is formed in the movable part, and when the electromagnetic valve is closed, the communicating channel communicates the first cavity with the second medium channel, and the movable part separates the first medium channel from the second medium channel; and when the electromagnetic valve is opened, the movable part relieves the separation of the first medium channel and the second medium channel. In this way, the pressure of the first cavity and the pressure of the second medium channel are kept consistent, and when the movable part moves, the pressure generated by the compressed medium in the first cavity on the movable part is reduced, so that the electromagnetic force needed when the movable part moves is reduced, heating of the electromagnetic valve is reduced, and the overall power consumption of the electromagnetic valve is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of valve control, and particularly relates to an electromagnetic valve, a suspension system and a vehicle. BACKGROUND

[0002] The electromagnetic valve is a device for controlling the flow of fluid (such as gas, liquid) by using electromagnetic force. Due to its rapid response, low energy consumption, compact structure and other advantages, it has become an important part of the automatic control system, such as the common one-way valve, safety valve, directional control valve, etc.

[0003] In the related art, when the electromagnetic valve works at high pressure, it is easily affected by the high pressure of the medium, so that the electromagnetic coil needs a larger redundant power, and thus the heat generation of the electromagnetic valve is greatly increased. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide an electromagnetic valve, a suspension system and a vehicle, which can solve the problem in the related art that when the electromagnetic valve works at high pressure, it is easily affected by the high pressure of the medium, so that the electromagnetic coil needs a larger redundant power, and thus the heat generation of the electromagnetic valve is greatly increased.

[0005] In order to solve the above technical problems, the application is implemented as follows:

[0006] In a first aspect, an electromagnetic valve is provided, comprising: a valve body assembly and a movable member, the valve body assembly is provided with a valve cavity, a first medium passage and a second medium passage, the valve cavity is in communication with the first medium passage and the second medium passage respectively; the movable member is movably arranged in the valve cavity, one end of the movable member away from the second medium passage forms a first chamber with the cavity wall of the valve cavity, and a communication passage is arranged on the movable member; the electromagnetic valve has a closed state and an open state, in the case that the electromagnetic valve is in the closed state, the movable member interrupts the first medium passage and the second medium passage, and the communication passage communicates the first chamber and the second medium passage; in the case that the electromagnetic valve is in the open state, the movable member interrupts the first medium passage and the second medium passage.

[0007] Optionally, the electromagnetic valve further comprises a first sealing member, which is arranged between the movable member and the cavity wall of the valve cavity; along the axial direction of the valve cavity, the first sealing member separates the valve cavity into the first chamber and a second chamber, the second chamber is in communication with the first medium passage, and the movable member is used to interrupt or communicate the second chamber and the second medium passage.

[0008] Optionally, along the axial direction of the valve cavity, the movable member is slidable in the valve cavity to interrupt or communicate the second chamber and the second medium passage.

[0009] Optionally, an outer circumferential surface of the movable member is provided with a first mounting groove, and the first sealing member is arranged in the first mounting groove.

[0010] Optionally, the electromagnetic valve further comprises a control member arranged at an end of the valve cavity away from the second medium passage; the control member is configured to control sliding of the movable member in the valve cavity.

[0011] Optionally, the movable member comprises a moving iron core assembly, the control member is movably connected with the moving iron core assembly, and the control member comprises a demagnetization state and a magnetization state; in the demagnetization state, the moving iron core assembly moves away from the control member to block the second cavity and the second medium passage; in the magnetization state, the moving iron core assembly moves towards the control member to connect the second cavity and the second medium passage.

[0012] Optionally, the electromagnetic valve further comprises an elastic member arranged between the movable member and the control member, one end of the elastic member is connected with the movable member, and the other end of the elastic member is connected with the control member; in the demagnetization state, the elastic member pushes the moving iron core assembly to move away from the control member to block the second cavity and the second medium passage.

[0013] Optionally, an end of the control member towards the moving iron core assembly is provided with a blind hole, an end of the moving iron core assembly towards the control member is provided with a counterbore, one end of the elastic member abuts against the blind hole, and the other end of the elastic member abuts against the counterbore; the moving iron core assembly is further provided with a first through hole, the first through hole is in communication with the counterbore to form the communication passage.

[0014] Optionally, the first through hole is arranged along an axis direction of the valve cavity and penetrates through a bottom of the counterbore to an end of the moving iron core assembly close to the second medium passage.

[0015] Optionally, the movable member comprises a permanent magnet assembly, the control member is movably connected with the permanent magnet assembly, and the control member comprises a demagnetization state and a magnetization state; in the demagnetization state, the control member and the permanent magnet assembly are attracted to each other to move the permanent magnet assembly towards the control member to connect the second cavity and the second medium passage; in the magnetization state, the control member and the permanent magnet assembly are repelled to move the permanent magnet assembly away from the control member to block the second cavity and the second medium passage.

[0016] Optionally, the electromagnetic valve further comprises an electromagnetic coil arranged on an outer circumferential surface of the control member, and the electromagnetic coil is configured to make the control member in the demagnetization state or the magnetization state.

[0017] Optionally, the electromagnetic valve further comprises a valve seat, the valve seat being sealingly connected to the valve cavity at an end close to the second medium passage; the valve seat is provided with a first passage, one end of the first passage being in communication with the second chamber, and the other end being in communication with the second medium passage; when the movable member moves towards the valve seat to abut against the valve seat, the movable member blocks the communication between the first passage and the second chamber, and the first passage is in communication with the communication passage; when the movable member moves away from the valve seat to disengage from the valve seat, the first passage is in communication with the second chamber.

[0018] Optionally, the cross-sectional area of the communication passage is smaller than the cross-sectional area of the first passage.

[0019] Optionally, the movable member further comprises a second sealing member, the second sealing member being provided at an end of the movable member close to the valve seat; the second sealing member has a second through hole, one end of the second through hole being in communication with the communication passage in the movable member; when the movable member drives the second sealing member to abut against the valve seat, the other end of the second through hole is in communication with the first passage of the valve seat.

[0020] Optionally, the valve body assembly comprises a base and a sleeve, the sleeve being provided in the base, the sleeve having a cavity, the cavity and the control member enclosing the valve cavity; the first medium passage and the second medium passage are provided on the base in a spaced manner, the valve cavity being in communication with the second medium passage, and the sleeve being provided with a second passage in the circumferential direction, the second passage being in communication with the first medium passage.

[0021] Optionally, a plurality of second passages are provided, the plurality of second passages being distributed in a spaced manner along the circumferential direction of the sleeve.

[0022] Optionally, the control member is sealingly connected to an end of the sleeve away from the second medium passage; the electromagnetic valve further comprises a valve seat, the valve seat at least partially extending into and being sealingly connected to an end of the sleeve close to the second medium passage, the sleeve, the control member and the valve seat enclosing the valve cavity.

[0023] Optionally, the electromagnetic valve further comprises a third sealing member, the third sealing member being provided between the valve seat and the base to seal between the valve seat and the base.

[0024] Optionally, the valve seat is provided with a second mounting groove, and the third sealing member is provided in the second mounting groove.

[0025] Optionally, the valve body assembly further comprises a fixing seat, the fixing seat is sleeved with the outer circumferential surface of the sleeve and is fixedly connected with the sleeve, and the outer circumferential surface of the fixing seat is fixedly connected with the base.

[0026] Optionally, the electromagnetic valve further comprises a fourth sealing member, the fourth sealing member is arranged between the fixing seat and the base.

[0027] In a second aspect, the embodiments of the present application provide a suspension system, comprising the electromagnetic valve according to any one of the above.

[0028] In a third aspect, the embodiments of the present application provide a vehicle, comprising the suspension system according to the above or comprising the electromagnetic valve according to any one of the above.

[0029] In the embodiments of the present application, the electromagnetic valve comprises a valve body assembly and a movable member, the valve body assembly is provided with a valve cavity, a first medium passage and a second medium passage, the valve cavity is communicated with the first medium passage and the second medium passage respectively; one end of the movable member away from the second medium passage forms a first chamber with a cavity wall of the valve cavity, and a communication passage is arranged on the movable member; when the electromagnetic valve is in a closed state, the communication passage communicates the first chamber with the second medium passage, and the movable member separates the first medium passage and the second medium passage; when the electromagnetic valve is in an open state, the movable member removes the separation of the first medium passage and the second medium passage. In this way, the pressure of the first chamber and the second medium passage is kept consistent, and when the movable member moves, the pressure of the medium in the first chamber caused by compression to the valve core assembly is reduced, thereby reducing the electromagnetic force required when the movable member moves, and further reducing the heat generation of the electromagnetic valve and the overall power consumption of the electromagnetic valve.

[0030] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0032] Figure 1 is a structural schematic diagram of the electromagnetic valve in a closed state according to the embodiments of the present application;

[0033] Figure 2 is a structural schematic diagram of the electromagnetic valve in an open state according to the embodiments of the present application;

[0034] Figure 3 is a structural schematic diagram of the movable member according to the embodiments of the present application;

[0035] Figure 4 is a structural schematic diagram of the electromagnetic valve according to the embodiments of the present application along Figure 1A-A line of the valve body assembly is a sectional view along

[0036] Figure 5 is a structural schematic view of a control member according to an embodiment of the present application;

[0037] Figure 6 is a sectional view along Figure 5 B-B line of the valve body assembly;

[0038] Figure 7 is a structural schematic view of a valve seat according to an embodiment of the present application;

[0039] Figure 8 is a sectional view along Figure 7 C-C line of the valve body assembly;

[0040] Figure 9 is a structural schematic view of a sleeve according to an embodiment of the present application;

[0041] Figure 10 is a sectional view along Figure 9 D-D line of the valve body assembly;

[0042] Figure 11 is a structural schematic view of a fixing seat according to an embodiment of the present application;

[0043] Figure 12 is a sectional view along Figure 11 E-E line of the valve body assembly.

[0044] Reference signs:

[0045] 1: valve body assembly; 11: valve cavity; 111: first chamber; 112: second chamber; 12: first medium passage; 13: second medium passage; 14: base; 15: sleeve; 151: cavity; 152: second passage; 16: fixing seat; 161: mounting hole; 162: third mounting groove; 21: communication passage; 22: movable member; 221: first mounting groove; 222: movable iron core assembly; 2221: counterbore; 2222: first through hole; 223: second sealing member; 2231: second through hole; 23: control member; 231: blind hole; 24: elastic member; 25: valve seat; 251: first passage; 252: second mounting groove; 3: first sealing member; 4: electromagnetic coil; 5: third sealing member; 6: fourth sealing member; 7: housing; X: axial direction of the valve cavity; d1: inner diameter of the communication passage; d2: inner diameter of the first passage. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0047] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Before explaining the electromagnetic valve, suspension system and vehicle provided by the embodiments of the present application, the application scenarios of the electromagnetic valve, suspension system and vehicle provided by the embodiments of the present application are described in detail:

[0051] The electromagnetic valve is widely used in industrial automation, water treatment, automobile, gas control, medical equipment, household electrical appliances, fire fighting system, agricultural irrigation and other fields due to its simple structure, rapid response, accurate control and other advantages. It is generally arranged in a pipeline to control the flow of fluid in the pipeline, such as gas, liquid, etc.

[0052] In the automotive industry, solenoid valves are used as important on-off switches in suspension and thermal management systems. In air suspension systems, solenoid valves connect or disconnect the air flow in the pipeline.

[0053] In the air suspension system of related technology, compressed air is usually used to support the vehicle and provide cushioning, so that the pressure of the air medium in the pipeline is relatively high. When the solenoid valve works in a high-pressure environment of the medium, in order to counteract the pressure brought by the high pressure of the medium, the solenoid coil requires a large redundant power, which leads to a significant increase in the heat generation of the solenoid valve, which can easily cause problems such as damage to the solenoid valve.

[0054] The solenoid valve, suspension system and vehicle provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0055] like Figure 1 and Figure 2 As shown, the solenoid valve according to some embodiments of the present application includes a valve body assembly 1 and a movable part 22. The valve body assembly 1 is provided with a valve cavity 11, a first medium channel 12 and a second medium channel 13. The valve cavity 11 is connected with the first medium channel 12 and the second medium channel 13 respectively; the movable part 22 is movably arranged in the valve cavity 11, and the end of the movable part 22 away from the second medium channel 13 forms a first chamber 111 with the cavity wall of the valve cavity 11. A connecting channel 21 is provided on the movable part 22. The solenoid valve has a closed state and an open state. When the solenoid valve is in the closed state, the movable part 22 separates the first medium channel 12 and the second medium channel 13, and the connecting channel 21 connects the first chamber 111 and the second medium channel 13; when the solenoid valve is in the open state, the movable part releases the separation of the first medium channel 12 and the second medium channel 13.

[0056] In the embodiment of the present application, the movable element 22 moves in the valve cavity 11 to cut off or connect the first medium passage 12 and the second medium passage 13 to control the flow of the medium. When the electromagnetic valve is in the closed state, the communication passage 21 arranged in the movable element 22 can connect the second medium passage 13 and the first chamber 111 on the side of the movable element 22 away from the second medium passage 13, so that the pressure of the first chamber 111 is consistent with that of the second medium passage 13. When the movable element 22 moves, the pressure of the medium in the first chamber 111 is reduced, so that the pressure generated by the medium on the movable element 22 is reduced, thereby reducing the electromagnetic force required for the movement of the movable element 22, and further reducing the heating of the electromagnetic valve. At the same time, since the pressure of the medium in the first medium passage 12 is greater than that in the second medium passage 13, when the movable element 22 connects the first medium passage 12 and the second medium passage 13, the external force required for the movement of the movable element 22 is reduced, thereby reducing the electromagnetic force provided by the electromagnetic valve to reduce the heating of the electromagnetic valve and the overall power consumption of the electromagnetic valve.

[0057] It should be noted that the electromagnetic valve proposed in the present application is a normally closed electromagnetic valve, which has a closed state and an open state. When the electromagnetic valve is in the closed state, the movable element 22 cuts off the connection between the first medium passage 12 and the second medium passage 13, so that the flow of the medium is blocked. At this time, the communication passage connects the first chamber 111 and the second medium passage 13. When the electromagnetic valve is in the open state, the movable element 22 removes the blockage between the first medium passage 12 and the second medium passage 13, so that the flow of the medium is conducted.

[0058] When the electromagnetic valve is switched from the closed state to the open state, an electromagnetic force is applied to the movable element 22 to move the movable element 22 to connect the first medium passage 12 and the second medium passage 13 to allow the medium in the pipeline to flow. The pipeline can be a pipeline in a thermal management system or a pipeline in an air suspension system, which can be set according to actual needs by those skilled in the art, and the present application does not limit this.

[0059] It should be explained that the electromagnetic valve generally generates an electromagnetic force by energizing the magnet coil to drive the movable element 22 to move, so that when a higher electromagnetic force is required, the corresponding current is also larger, which makes the heating amplitude of the electromagnetic valve higher. Therefore, when the external force required for the movement of the movable element 22 is reduced, the required electromagnetic force is also reduced, thereby reducing the required current and the heating amplitude of the electromagnetic valve and the overall power consumption of the electromagnetic valve.

[0060] It can be understood that the movable element 22 moves in the valve cavity 11 to block or communicate the first medium passage 12 and the second medium passage 13. It should be noted that the communication here refers to the removal of the blocking between the first medium passage 12 and the second medium passage 13 by the movable element 22. In the following, the communication of the movable element 22 to the first medium passage 12 and the second medium passage 13 also refers to the removal of the blocking of the two. The specific active connection mode can be at least one of sliding connection, rolling connection, etc. The skilled person can set it according to the actual needs, and the present application does not limit it.

[0061] In a specific application, the first medium passage 12 of the electromagnetic valve is connected to one end of an external pipeline, and the second medium passage 13 is connected to the other end of the external pipeline. The pipeline is controlled by the electromagnetic valve to be on or off. The medium flows from the first medium passage 12 in the pipeline and flows out from the second medium passage 13 when the electromagnetic valve is opened. The medium can be a gas or a liquid, such as air, coolant, water, etc.

[0062] In a specific application, the communication passage 21 communicates the first chamber 111 with the second medium passage 13, so that the pressures at both ends of the movable element 22 are in a balanced state, thereby eliminating the need to resist the pressure generated by the medium in the first chamber 111 when the electromagnetic valve drives the movable element 22 to move. And because the medium pressure in the first medium passage 12 is greater than that in the second medium passage 13, the movable element 22 can be pushed by the pressure difference when it is opened, thereby reducing the electromagnetic force required to open the movable element 22.

[0063] It can be understood that the communication passage 21 specifically penetrates the movable element 22 to communicate the first chamber 111 with the second medium passage 13. Its setting position can be along the axis direction X of the valve cavity 11, or any position parallel to the axis direction X of the valve cavity 11.

[0064] It should be explained that the cross section of the communication passage 21 can be circular, oval, polygonal or any other shape. The skilled person can set it according to the needs, and the present application does not limit it.

[0065] As shown in Figure 1 and Figure 2 In some embodiments of the present application, the electromagnetic valve further comprises a first sealing element 3 arranged between the movable element 22 and the cavity wall of the valve cavity 11. Along the axis direction X of the valve cavity 11, the first sealing element 3 divides the valve cavity 11 into a first chamber 111 and a second chamber 112. The second chamber 112 communicates with the first medium passage 12, and the movable element 22 is used to block or communicate the second chamber 112 and the second medium passage 13.

[0066] In the embodiment of the present application, the first sealing member 3 is arranged between the movable element 22 and the cavity wall of the valve cavity 11, so that the movable element 22 can be guided when moving in the valve cavity 11, and the vibration of the movable element 22 is avoided, and the control accuracy of the electromagnetic valve is improved. Correspondingly, the first sealing member 3 divides the valve cavity 11 into a first chamber 111 and a second chamber 112. The first chamber 111 is in communication with the second medium passage 13 through the communication passage 21, and the second chamber 112 is in communication with the first medium passage 12. When the movable element 22 communicates the first medium passage 12 and the second medium passage 13, the movable element 22 moves away from the second medium passage 13, so as to compress the space of the first chamber 111, and the medium in the first chamber 111 flows to the second medium passage 13 along the communication passage 21, so as to keep the pressure balance. The medium pressure in the first medium passage 12 is greater than that in the second medium passage 13, so as to generate a thrust force on the movable element 22, and then the electromagnetic force required by the movable element 22 is reduced, the heating amplitude of the electromagnetic valve is reduced, and the overall power consumption of the electromagnetic valve is reduced.

[0067] It should be explained that the first sealing member 3 seals between the movable element 22 and the cavity wall of the valve cavity 11, and guides the movable element 22 when the movable element 22 moves relative to the valve cavity 11. The first sealing member 3 is a dynamic sealing member, and has a certain self-lubricating function. The first sealing member 3 specifically includes at least one of a Gley ring, a DSh sealing ring, a Stener sealing member, an X-shaped sealing ring, a double-lip dustproof sealing ring, an AQ structure combined sealing member, a rubber-plastic composite sealing member, and the like. Those skilled in the art can select according to the needs, and the present application does not limit this.

[0068] It can be understood that the first sealing member 3 can guide the movement of the movable element 22, so that other guiding structures, such as guiding columns, are not required in the electromagnetic valve to guide the movable element 22, so that the structure of the electromagnetic valve is simpler, and the cost is lower.

[0069] It should be explained that the first sealing member 3 can be mounted on the cavity wall of the valve cavity 11, or can be mounted on the outer circumferential surface of the movable element 22. Those skilled in the art can set it according to the actual needs, and the present application does not limit this.

[0070] As shown in Figure 1 and Figure 2 In some embodiments of the present application, the movable element 22 is slidable in the valve cavity 11 along the axial direction X of the valve cavity 11, so as to separate or communicate the second chamber 112 and the second medium passage 13.

[0071] In the embodiments of the present application, the movable element 22 slides along the axial direction X of the valve cavity 11, so as to block the second medium passage 13 when the movable element 22 is close to the second medium passage 13, so as to separate the second cavity 112 from the second medium passage 13; and so as to unblock the second medium passage 13 when the movable element 22 is away from the second medium passage 13, so as to connect the second cavity 112 with the second medium passage 13.

[0072] It should be explained that, as shown in Figure 1 , the second cavity 112 is connected with the first medium passage 12, so that the first medium passage 12 and the second medium passage 13 are connected when the second medium passage 13 is connected with the second cavity 112; and the first medium passage 12 and the second medium passage 13 are separated when the second medium passage 13 is separated from the second cavity 112.

[0073] It can be understood that the electromagnetic valve is to apply electromagnetic force to the movable element 22 to make the movable element 22 move, so that the movable element 22 can be a common magnetic element (such as iron) or a permanent magnet assembly (such as a magnet), so as to slide by magnetic attraction or repulsion, and those skilled in the art can make settings according to actual conditions, and the present application does not make any limitation.

[0074] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , in some embodiments of the present application, the outer circumferential surface of the movable element 22 is provided with a first mounting groove 221, and the first sealing element 3 is arranged in the first mounting groove 221.

[0075] In the embodiments of the present application, the first mounting groove 221 is arranged around the outer circumferential surface of the movable element 22, so as to facilitate the installation of the first sealing element 3 and ensure the stability of the first sealing element 3 during work.

[0076] It should be explained that, in actual assembly, the movable element 22 needs to be installed into the valve cavity 11, and the first mounting groove 221 is arranged on the movable element 22, so as to facilitate the installation of the first sealing element 3 when the movable element 22 is installed.

[0077] As shown in Figure 1 and Figure 2 , in some embodiments of the present application, the electromagnetic valve further comprises a control element 23, which is arranged at one end of the valve cavity 11 away from the second medium passage 13; and the control element 23 is used to control the sliding of the movable element 22 in the valve cavity 11.

[0078] In the embodiment of the present application, the control member 23 is arranged at one end of the valve cavity 11 away from the second medium passage 13 and is fixedly connected with the cavity wall of the valve cavity 11. The control member 23 can control the sliding of the movable member 22 in the valve cavity 11, so as to connect or isolate the first medium passage 12 and the second medium passage 13.

[0079] In a specific application, the control member 23 can be a static iron core which generates a magnetic force through an electromagnetic coil to attract the movable member 22 to slide; or can be a permanent magnet assembly to attract the movable member 22 to slide. Those skilled in the art can set it according to actual needs, and the present application does not limit it.

[0080] It can be understood that, in order to improve the control accuracy of the electromagnetic valve, the control member 23 is preferably a static iron core which is fixedly installed at one end of the valve cavity 11 away from the second medium passage 13. When the electromagnetic coil generates an electromagnetic force through the static iron core, the movable member 22 can be attracted to move away from the second medium passage 13 to open the blockage of the second medium passage 13.

[0081] As shown in Figure 1 , Figure 2 and Figure 4 , in some embodiments of the present application, the movable member 22 comprises a moving iron core assembly 222, the control member 23 is movably connected with the moving iron core assembly 222, and the control member 23 comprises a demagnetization state and a magnetization state. In the demagnetization state, the moving iron core assembly 222 moves away from the control member 23 to isolate the second cavity 112 from the second medium passage 13. In the magnetization state, the moving iron core assembly 222 moves towards the control member 23 to connect the second cavity 112 with the second medium passage 13.

[0082] In the embodiment of the present application, the moving iron core assembly 222 is movably connected with the control member 23. In the demagnetization state of the control member 23, the moving iron core assembly 222 moves away from the control member 23 to block the second medium passage 13, so as to isolate the first medium passage 12 and the second medium passage 13. At this time, the electromagnetic valve is in a closed state. In the magnetization state of the control member 23, the moving iron core assembly 222 moves towards the control member 23 to unblock the second medium passage 13, so as to connect the first medium passage 12 and the second medium passage 13 through the second cavity 112. At this time, the electromagnetic valve is in an open state.

[0083] It should be explained that the electromagnetic valve has a closed state and an open state, which correspond to the demagnetization state and the magnetization state of the control member 23. When the control member 23 is in the demagnetization state, the electromagnetic valve is in the closed state. When the control member 23 is in the magnetization state, the electromagnetic valve is in the open state.

[0084] In a specific application, the moving iron assembly 222 is a moving part in the electromagnetic valve, made of magnetic material, and the material of the moving iron assembly 222 includes at least one of silicon steel sheet, nickel-iron alloy, ferrite, neodymium iron boron, etc., which can be selected according to actual needs by those skilled in the art, and the present application does not limit this.

[0085] It can be understood that the moving iron assembly 222 and the control piece 23 interact through magnetic force, so when the magnetic force of the control piece 23 is large enough, the moving iron assembly 222 can be a common magnetic piece (such as iron), and in the magnetized state of the control piece 23, it can attract the moving iron assembly 222 to move towards the control piece 23.

[0086] As shown in Figure 1 and Figure 2 , in some embodiments of the present application, the electromagnetic valve further comprises an elastic piece 24, which is arranged between the moving piece 22 and the control piece 23, one end of the elastic piece 24 is connected with the moving piece 22, and the other end is connected with the control piece 23; in the demagnetized state, the elastic piece 24 pushes the moving iron assembly 222 to move away from the control piece 23, so as to cut off the second chamber 112 and the second medium passage 13.

[0087] In the embodiments of the present application, the electromagnetic valve is a normally closed valve, and the elastic piece 24 is arranged between the moving piece 22 and the control piece 23, and the two ends of the elastic piece 24 are connected with the moving piece 22 and the control piece 23 respectively, in the demagnetized state of the control piece 23, the magnetic force between the control piece 23 and the moving piece 22 disappears, the elastic piece 24 pushes the moving iron assembly 222 to move away from the control piece 23, thereby blocking the second medium passage 13, cutting off the first medium passage 12 and the second medium passage 13, and making the electromagnetic valve in a closed state. Since the electromagnetic valve is a normally closed valve, the electromagnetic valve is in a closed state by the elastic piece 24, without the need for electromagnetic control of the normally closed electromagnetic valve, thereby reducing the energy consumption of the electromagnetic valve.

[0088] In some embodiments of the present application, in the demagnetized state, the elastic piece 24 pulls the moving iron assembly 222 to move towards the control piece 23, so as to connect the second chamber 112 and the second medium passage 13. At this time, the elastic piece 24 removes the driving force of the moving iron assembly 222 for blocking the second medium passage 13, and the repulsive magnetic force between the moving piece 22 and the control piece 23 is the driving force of the moving iron assembly 222 for blocking the second medium passage 13.

[0089] It should be explained that the elastic member 24 can be a tension spring (tension spring) or a compression spring (compression spring). When the elastic member 24 is a compression spring, the elastic member 24 pushes the moving iron core assembly 222 to move to block and keep the second medium passage 13 when the control member 23 is demagnetized, and the control member 23 attracts the movable member 22 to move towards the control member 23 to open the second medium passage 13 when the control member 23 is magnetized; while when the elastic member 24 is a tension spring, the control member 23 pushes the movable member 22 to move away from the control member 23 to block and keep the second medium passage 13 when the control member 23 is magnetized, and the elastic member 24 pulls the moving iron core assembly 222 to move to open the second medium passage 13 when the control member 23 is demagnetized.

[0090] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , in some embodiments of the present application, the control member 23 is provided with a blind hole 231 at one end thereof towards the moving iron core assembly 222, the moving iron core assembly 222 is provided with a counterbore 2221 at one end thereof towards the control member 23, one end of the elastic member 24 abuts in the blind hole 231 and the other end thereof abuts in the counterbore 2221; the moving iron core assembly 222 is further provided with a first through hole 2222, which is in communication with the counterbore 2221 to form a communication passage 21.

[0091] In the embodiments of the present application, by providing the blind hole 231 at one end of the control member 23 towards the moving iron core assembly 222 and the counterbore 2221 at one end of the moving iron core assembly 222 towards the control member 23, the elastic member 24 can be stably installed between the control member 23 and the moving iron core assembly 222 to ensure the stability of the elastic member 24 during operation.

[0092] It can be understood that the depth of the blind hole 231 and the counterbore 2221 is determined according to the required elongation of the elastic member 24, and the corresponding inner diameter is determined by the outer diameter of the elastic member 24, so that the two ends of the elastic member 24 can abut in the blind hole 231 and the counterbore 2221 respectively and can push the moving iron core assembly 222 during elongation.

[0093] As shown in Figure 4 , the first through hole 2222 is arranged along the axial direction X of the valve cavity 11 and penetrates through the bottom of the counterbore 2221 to one end of the moving iron core assembly 222 close to the second medium passage 13.

[0094] In the embodiment of the present application, the first through hole 2222 is arranged along the axial direction X of the valve cavity 11 and penetrates the bottom of the counterbore 2221 to one end of the moving iron core assembly 222 close to the second medium passage 13, which facilitates the machining of the first through hole 2222 on the moving iron core assembly 222, and the first through hole 2222 penetrates the bottom of the counterbore 2221 to one end of the moving iron core assembly 222 close to the second medium passage 13, so that the first through hole 2222 and the counterbore 2221 can communicate the first chamber 111 with the second medium passage 13, balance the pressure at both ends of the moving iron core assembly 222 along the axial direction X of the valve cavity 11, reduce the energy consumption of the electromagnetic valve, and reduce the heat generation amplitude of the electromagnetic valve.

[0095] In a specific application, the moving iron core assembly 222 is a rotary body, after the counterbore 2221 is machined at one end thereof, the first through hole 2222 is drilled along the center line thereof, which is convenient for machining and facilitates the design positioning when cooperating with the second medium passage 13.

[0096] In some embodiments of the present application, the moving part 22 comprises a permanent magnet assembly, the control part 23 is movably connected with the permanent magnet assembly, and the control part 23 comprises a demagnetization state and a magnetization state; in the demagnetization state, the control part 23 and the permanent magnet assembly are attracted to each other, so that the permanent magnet assembly moves towards the direction of the control part 23 to communicate the second chamber 112 with the second medium passage 13; in the magnetization state, the control part 23 and the permanent magnet assembly repel each other, so that the permanent magnet assembly moves away from the control part 23 to isolate the second chamber 112 from the second medium passage 13.

[0097] In the embodiment of the present application, when the control part 23 is in the demagnetization state, the permanent magnet assembly moves towards the direction of the control part 23 to unblock the second medium passage 13, and the first medium passage 12 and the second medium passage 13 are communicated through the second chamber 112, at this time the electromagnetic valve is in an open state; when the control part 23 is in the magnetization state, the permanent magnet assembly moves away from the control part 23 to block the second medium passage 13, so as to isolate the first medium passage 12 from the second medium passage 13, at this time the electromagnetic valve is in a closed state.

[0098] It should be explained that, in the embodiment, the control part 23 is a common magnetic part, which can generate an electromagnetic force repelling the permanent magnet assembly through the electromagnetic coil, when the electromagnetic coil is energized, the control part 23 and the permanent magnet assembly repel each other to push the permanent magnet assembly to move; and when the electromagnetic coil is not energized, the control part 23 and the permanent magnet assembly attract each other to pull the permanent magnet assembly to move.

[0099] In a specific application, the permanent magnet assembly can also be pulled to move by a tension spring when the control part 23 is demagnetized, and the permanent magnet assembly can be pushed to move by a magnetic force when the control part 23 is magnetized.

[0100] For example, Figure 1and Figure 2 As shown, in some embodiments of the present application, the solenoid valve further includes an electromagnetic coil 4, which is provided on the outer peripheral surface of the control member 23 and is used to place the control member 23 in the demagnetized state or the magnetized state.

[0101] In the embodiment of the present application, by providing an electromagnetic coil 4, the control element 23 can be controlled to be in a demagnetized state or a magnetized state by whether it is energized or not, so that the electromagnetic valve is closed or opened; this can improve the control accuracy of the electromagnetic valve.

[0102] The electromagnetic coil 4 can generate a magnetic field, thereby generating the required magnetic force on the control member 23 to push or attract the movable member 22 to move. The electromagnetic coil 4 is generally made of electrolytic copper wire to effectively transmit electrical energy and generate a magnetic field.

[0103] like Figure 1 、 Figure 2 、 Figure 9 and Figure 10 As shown, in some embodiments of the present application, the solenoid valve also includes a valve seat 25, which is sealed and connected to one end of the valve cavity 11 near the second medium channel 13; a first channel 251 is provided on the valve seat 25, one end of the first channel 251 is connected to the second chamber 112, and the other end is connected to the second medium channel 13; when the movable part 22 moves toward the valve seat 25 to abut the valve seat 25, the movable part 22 cuts off the connection between the first channel 251 and the second chamber 112, and the first channel 251 is connected to the connecting channel 21; when the movable part 22 moves in a direction away from the valve seat 25 to separate from the valve seat 25, the first channel 251 is connected to the second chamber 112.

[0104] In the embodiment of the present application, when the movable part 22 moves toward the valve seat 25, the movable part 22 abuts against the valve seat 25, and the movable part 22 blocks the first channel 251 on the valve seat 25, so that the communication between the first channel 251 and the second chamber 112 is cut off, that is, the first medium channel 12 and the second medium channel 13 are cut off, and at the same time, the first channel 251 is connected to the connecting channel 21, that is, the first chamber 111 and the second medium channel 13 are connected; when the movable part 22 moves in a direction away from the valve seat 25, the movable part 22 disengages from the valve seat 25, the first channel 251 on the valve seat 25 is unblocked, and the first channel 251 is connected to the second chamber 112, that is, the first medium channel 12 and the second medium channel 13 are connected.

[0105] In a specific application, the valve seat 25 is fixedly connected to the cavity wall of the valve cavity 11 and sealed to ensure that the medium does not leak out.

[0106] It should be explained that the cross section of the first channel 251 can be circular, oval, polygonal or any other shape, which can be set according to actual needs by those skilled in the art, and the present application does not limit this.

[0107] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 10 , in some embodiments of the present application, the cross-sectional area of the communication channel 21 is smaller than that of the first channel 251.

[0108] In the embodiments of the present application, by setting the cross-sectional area of the communication channel 21 to be smaller than that of the first channel 251, when the movable part 22 abuts against the valve seat 25, the communication between the first channel 251 and the second chamber 112 can be blocked, and the communication channel 21 is communicated with the first channel 251.

[0109] It can be understood that the cross sections of the movable part 22 and the valve seat 25 towards their respective sides are annular, and when the cross-sectional area of the communication channel 21 is smaller than that of the first channel 251, the annular part of the movable part 22 can block the first channel 251 to block the communication between the first channel 251 and the second chamber 112.

[0110] In specific applications, taking the cross sections of the communication channel 21 and the first channel 251 as circular as an example, as shown in Figure 4 , the cross-sectional area S1 of the communication channel 21 is π(d1) 2 / 4, and as shown in Figure 10 , the cross-sectional area S2 of the first channel 251 is π(d2) 2 / 4, S1 < S2; of course, the inner diameters of the communication channel 21 and the first channel 251 can also be directly measured, d1 < d2.

[0111] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , in some embodiments of the present application, the movable part 22 further comprises a second sealing member 223, which is arranged at one end of the movable part 22 close to the valve seat 25; the second sealing member 223 has a second through hole 2231, one end of which is communicated with the communication channel 21 in the movable part 22; in the case that the movable part 22 drives the second sealing member 223 to abut against the valve seat 25, the other end of the second through hole 2231 is communicated with the first channel 251 of the valve seat 25.

[0112] In the embodiment of the present application, the second sealing member 223 is arranged at one end of the movable element 22 close to the valve seat 25, so that when the movable element 22 moves towards the valve seat 25, the second sealing member 223 abuts against the valve seat 25 and separates the first passage 251 from the second cavity 112, at the same time, the second through hole 2231 of the second sealing member 223 can communicate with the first passage 251, realizing the communication between the first cavity 111 and the second medium passage 13.

[0113] It should be explained that the second sealing member 223 is made of soft sealing material such as rubber, which can separate the first passage 251 from the second cavity 112, and can buffer and eliminate noise when the movable element 22 abuts against the valve seat 25, reducing the damage to the valve seat 25 and the movable element 22.

[0114] In some embodiments of the present application, the movable element 22 and the second sealing member 223 are integrally formed, and during processing, the rubber injection molding method is adopted to process one end of the movable element 22, and then the drilling table is used to punch the counterbore 2221, the first through hole 2222 and the second through hole 2231, thereby improving the processing efficiency and reducing the cost.

[0115] As shown in Figure 1 , Figure 2 , Figure 7 and Figure 8 , in some embodiments of the present application, the valve body assembly 1 comprises a base 14 and a sleeve 15, the sleeve 15 is arranged in the base 14, the sleeve 15 has a cavity 151, the cavity 151 and the control element 23 enclose the valve cavity 11; the first medium passage 12 and the second medium passage 13 are arranged on the base 14, the valve cavity 11 communicates with the second medium passage 13, the sleeve 15 is provided with a second passage 152 in the circumferential direction, and the second passage 152 communicates with the first medium passage 12.

[0116] In the embodiment of the present application, the valve body assembly 1 comprises a base 14, the first medium passage 12 and the second medium passage 13 are arranged in the base 14, the base 14 is installed in the external pipeline to communicate the first medium passage 12 and the second medium passage 13 with different ends of the pipeline, the sleeve 15 is arranged in the base 14, the sleeve 15 is provided with a cavity 151, so that the sleeve 15 and the control element 23 enclose the valve cavity 11, one end of the valve cavity 11 communicates with the second medium passage 13, and the second passage 152 is arranged in the circumferential direction of the sleeve 15, so that the valve cavity 11 communicates with the first medium passage 12 through the second passage 152, and when the movable element 22 moves, the first medium passage 12 and the second medium passage 13 can be separated, so that the electromagnetic valve is closed.

[0117] In a specific application, the base 14 can be made of metal or composite material, which is not limited herein. It can be understood that when the base 14 is made of metal, the wear resistance of the base 14 can be improved, thereby improving the service life of the electromagnetic valve and reducing the cost of the electromagnetic valve.

[0118] It should be explained that in order to enable the moving member 22 to separate the first medium channel 12 and the second medium channel 13, the first medium channel 12 and the second medium channel 13 can be arranged in different directions of the base 14, such as Figure 1 and Figure 2 It can be that the first medium channel 12 is arranged in a horizontal direction and the second medium channel 13 is arranged in a vertical direction, and of course other layout modes capable of separating the two by moving the moving member 22 at least partially.

[0119] As shown in Figure 7 and Figure 8 In some embodiments of the present application, a plurality of second channels 152 are arranged in the circumferential direction of the sleeve 15.

[0120] In the embodiments of the present application, by arranging a plurality of second channels 152 in the circumferential direction of the sleeve 15, the medium flowing from the first medium channel 12 can be sufficiently flowed into the second chamber 112 through the second channel 152, and then flowed into the second medium channel 13 through the first channel 251.

[0121] In a specific application, the number of second channels 152 can be set to 2, 4, 6, etc., which can be set by those skilled in the art according to actual needs, and the present application does not limit this.

[0122] As shown in Figure 1 and Figure 2 In some embodiments of the present application, the control member 23 is sealingly connected to one end of the sleeve 15 away from the second medium channel 13; the electromagnetic valve further comprises a valve seat 25, the valve seat 25 is at least partially inserted into one end of the sleeve 15 close to the second medium channel 13 and is sealingly connected, and the sleeve 15, the control member 23 and the valve seat 25 form a valve chamber 11.

[0123] In the embodiments of the present application, the control member 23 is sealingly connected to one end of the sleeve 15 away from the second medium channel 13, and the valve seat 25 is arranged between the sleeve 15 and the second medium channel 13, the valve seat 25 is at least partially inserted into the sleeve 15 and is sealingly connected, so that the sleeve 15, the control member 23 and the valve seat 25 form a valve chamber 11, so that the moving member 22 moves in the valve chamber 11 and the movement of the moving member 22 is controlled by the control member 23.

[0124] In a specific application, the control member 23 is press-fitted with one end of the sleeve 15 in an interference fit, and then laser welding is performed to form a seal, thereby ensuring the stability of the connection. At the other end of the sleeve 15, the sleeve 15 is press-fitted with the valve seat 25 in an interference fit, and then laser welding is performed to form a seal, thereby ensuring the stability of the connection.

[0125] It can be understood that the control member 23 is a static core, and the movable member 22 is a moving core assembly 222. When the electromagnetic coil 4 is energized, the static core generates a magnetic force to attract the moving core assembly 222 to slide along the axis direction of the sleeve 15 toward the static core, so as to open the first passage on the valve seat 25, so that the first medium passage 12 flows into the second chamber 112 through the second passage 152, and then flows into the second medium passage 13 through the first passage 251.

[0126] As shown in Figure 1 and Figure 2 , in some embodiments of the present application, the electromagnetic valve further comprises a third sealing member 5, which is arranged between the valve seat 25 and the base 14 to seal between the valve seat 25 and the base 14.

[0127] In the embodiments of the present application, by arranging the third sealing member 5 between the valve seat 25 and the base 14, the sealing performance of the electromagnetic valve as a whole can be improved, and the leakage after assembly of the electromagnetic valve can be reduced.

[0128] In a specific application, the third sealing member 5 can be at least one of a sealing ring, a sealing gasket, a sealing glue, etc., and a person skilled in the art can set it according to the needs, and the present application does not limit it.

[0129] As shown in Figure 9 and Figure 10 , the valve seat 25 is provided with a second mounting groove 252, and the third sealing member 5 is arranged in the second mounting groove 252.

[0130] In the embodiments of the present application, the second mounting groove 252 is arranged on the valve seat 25, so as to facilitate the installation of the third sealing member 5 between the valve seat 25 and the base 14, thereby improving the convenience of installation and prolonging the service life of the third sealing member 5.

[0131] In a specific application, the size of the second mounting groove 252 is determined according to the size of the third sealing member 5, so as to ensure the sealing effect of the third sealing member 5 and meet the installation requirements.

[0132] As shown in Figure 1 , Figure 2 , Figure 11 and Figure 12 , in some embodiments of the present application, the valve body assembly 1 further comprises a fixing seat 16, which is sleeved with the outer circumferential surface of the sleeve 15 and is fixedly connected with the sleeve 15, and the outer circumferential surface of the fixing seat 16 is fixedly connected with the base 14.

[0133] In the embodiment of the present application, the fixing seat 16 is sleeved with the outer periphery of the sleeve 15 and is fixedly connected with the sleeve 15. The outer periphery of the fixing seat 16 is fixedly connected with the base 14, so that the sleeve 15 is stably installed in the base 14, and the stability of the overall structure of the electromagnetic valve is improved.

[0134] In a specific application, the fixing seat 16 is provided with a mounting hole 161. The sleeve 15 is arranged in the mounting hole 161, and then laser welding is used for fixation. Then, the fixing seat 16 is press-fitted in the base 14.

[0135] As shown in Figure 1 , Figure 2 , Figure 11 and Figure 12 , in some embodiments of the present application, the electromagnetic valve further comprises a fourth sealing member 6 arranged between the fixing seat 16 and the base 14.

[0136] In the embodiment of the present application, the fourth sealing member 6 is arranged between the fixing seat 16 and the base 14, so that the overall sealing performance of the electromagnetic valve is improved, and the leakage after assembly of the electromagnetic valve is reduced.

[0137] In a specific application, the outer periphery of the fixing seat 16 is surrounded by a third mounting groove 162. After the fixing seat 16 is press-fitted on the base 14, the fourth sealing member 6 is arranged in the third mounting groove 162. The fourth sealing member 6 is sealing glue, which is convenient to fill.

[0138] As shown in Figure 1 and Figure 2 , in some embodiments of the present application, the electromagnetic coil 4 abuts against the fixing seat 16 and is sleeved with the outer periphery of the control member 23. The electromagnetic valve further comprises a housing 7 covering the outer periphery of the electromagnetic coil 4 and fixedly connected with the base. Thus, the electromagnetic coil 4 is protected and fixed, so as to improve the use safety and service life of the electromagnetic valve.

[0139] The electromagnetic valve of the embodiment of the present application is a normally closed valve. There are two working states of the electromagnetic valve in use, a closed state (valve closing state) and an open state (valve opening state). The working principle of the electromagnetic valve of the embodiment of the present application is briefly introduced as follows:

[0140] When the electromagnetic valve is in the closed state, the electromagnetic coil 4 is de-energized so that the magnetic field disappears, the electromagnetic force on the control member 23 disappears, the attraction force between the control member 23 and the moving iron core assembly 222 disappears, and under the elastic action of the elastic member 24, the moving iron core assembly 222 moves away from the moving member 22 and drives the second sealing member 223, so that the second sealing member 223 abuts against the valve seat 25, the second sealing member 223 blocks the first passage 251 on the valve seat 25, so that the first medium passage 12 and the second medium passage 13 are not communicated, the first passage 251 is communicated with the first chamber 111 through the communication passage 21 and the second through hole 2231, and pressure balance is formed at both ends of the moving iron core assembly 222.

[0141] When the electromagnetic valve is in the closed state, the electromagnetic coil 4 is de-energized so that the magnetic field disappears, the electromagnetic force on the control member 23 disappears, the attraction force between the control member 23 and the moving iron core assembly 222 disappears, and under the elastic action of the elastic member 24, the moving iron core assembly 222 moves away from the moving member 22 and drives the second sealing member 223, so that the second sealing member 223 abuts against the valve seat 25, the second sealing member 223 blocks the first passage 251 on the valve seat 25, so that the first medium passage 12 and the second medium passage 13 are not communicated, the first passage 251 is communicated with the first chamber 111 through the communication passage 21 and the second through hole 2231, and pressure balance is formed at both ends of the moving iron core assembly 222.

[0142] When the electromagnetic valve is in the closed state, the electromagnetic coil 4 is de-energized so that the magnetic field disappears, the electromagnetic force on the control member 23 disappears, the attraction force between the control member 23 and the moving iron core assembly 222 disappears, and under the elastic action of the elastic member 24, the moving iron core assembly 222 moves away from the moving member 22 and drives the second sealing member 223, so that the second sealing member 223 abuts against the valve seat 25, the second sealing member 223 blocks the first passage 251 on the valve seat 25, so that the first medium passage 12 and the second medium passage 13 are not communicated, the first passage 251 is communicated with the first chamber 111 through the communication passage 21 and the second through hole 2231, and pressure balance is formed at both ends of the moving iron core assembly 222.

[0143] In the electromagnetic valve provided in the embodiment of the present application, the moving iron core assembly 222 is guided by the first sealing member 3, so that an additional guiding structure is not needed, the surfaces of the moving iron core assembly 222 and the control member 23 that are close to each other can be flat, the structure is simpler, the processing is more convenient, and the manufacturing cost of the electromagnetic valve is reduced.

[0144] In some embodiments of the present application, a suspension system is also provided, comprising the electromagnetic valve according to any of the above embodiments.

[0145] In the embodiments of the present application, the movable element 22 moves in the valve cavity 11 to block or connect the first medium passage 12 and the second medium passage 13 to control the flow of the medium. When the electromagnetic valve is in the closed state, the communication passage 21 arranged in the movable element 22 can connect the second medium passage 13 and the first chamber 111 on the side of the movable element 22 away from the second medium passage 13, so that the pressure of the first chamber 111 is consistent with that of the second medium passage 13. When the movable element 22 moves, the pressure of the medium in the first chamber 111 is reduced, so that the pressure on the movable element 22 is reduced, thereby reducing the electromagnetic force required for the movement of the movable element 22, and further reducing the heat generation of the electromagnetic valve. At the same time, since the pressure of the medium in the first medium passage 12 is greater than that in the second medium passage 13, when the movable element 22 connects the first medium passage 12 and the second medium passage 13, the external force required for the movement of the movable element 22 is reduced, thereby reducing the electromagnetic force provided by the electromagnetic valve to reduce the heat generation of the electromagnetic valve and the overall power consumption of the electromagnetic valve.

[0146] In a specific application, the suspension system can be an air suspension system, and the electromagnetic valve is used to control the flow of air in the pipeline.

[0147] In some embodiments of the present application, a vehicle is also provided, comprising the suspension system according to any of the above embodiments, or comprising the electromagnetic valve according to any of the above embodiments.

[0148] In the embodiments of the present application, the movable element 22 moves in the valve cavity 11 to block or connect the first medium passage 12 and the second medium passage 13 to control the flow of the medium. When the electromagnetic valve is in the closed state, the communication passage 21 arranged in the movable element 22 can connect the second medium passage 13 and the first chamber 111 on the side of the movable element 22 away from the second medium passage 13, so that the pressure of the first chamber 111 is consistent with that of the second medium passage 13. When the movable element 22 moves, the pressure of the medium in the first chamber 111 is reduced, so that the pressure on the movable element 22 is reduced, thereby reducing the electromagnetic force required for the movement of the movable element 22, and further reducing the heat generation of the electromagnetic valve. At the same time, since the pressure of the medium in the first medium passage 12 is greater than that in the second medium passage 13, when the movable element 22 connects the first medium passage 12 and the second medium passage 13, the external force required for the movement of the movable element 22 is reduced, thereby reducing the electromagnetic force provided by the electromagnetic valve to reduce the heat generation of the electromagnetic valve and the overall power consumption of the electromagnetic valve.

[0149] In a specific application, the electromagnetic valve can be used in a thermal management system of a vehicle, or in a suspension system to control the flow of medium in the corresponding pipeline.

[0150] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0151] Although embodiments of this application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A solenoid valve, characterized in that: include: A valve body assembly (1), the valve body assembly (1) being provided with a valve cavity (11), a first medium channel (12) and a second medium channel (13), the valve cavity (11) being in communication with the first medium channel (12) and the second medium channel (13), respectively; a movable member (22), the movable member (22) being movably disposed in the valve cavity (11), an end of the movable member (22) facing away from the second medium channel (13) and a cavity wall of the valve cavity (11) forming a first chamber (111), and a communicating channel (21) being provided on the movable member (22); The solenoid valve has a closed state and an open state. When the solenoid valve is in the closed state, the movable member (22) separates the first medium channel (12) and the second medium channel (13), and the connecting channel (21) connects the first chamber (111) and the second medium channel (13). When the solenoid valve is in an open state, the movable member (22) releases the isolation between the first medium channel (12) and the second medium channel (13).

2. The solenoid valve according to claim 1, characterized in that The solenoid valve further comprises a first sealing member (3), wherein the first sealing member (3) is arranged between the movable member (22) and the cavity wall of the valve cavity (11); Along the axial direction (X) of the valve cavity (11), the first sealing member (3) divides the valve cavity (11) into the first chamber (111) and the second chamber (112), the second chamber (112) is connected to the first medium channel (12), and the movable member (22) is used to separate or connect the second chamber (112) and the second medium channel (13).

3. The solenoid valve according to claim 2, characterized in that The movable member (22) is slidable in the valve cavity (11) along the axial direction (X) of the valve cavity (11) to isolate or connect the second chamber (112) and the second medium channel (13).

4. The solenoid valve according to claim 3, characterized in that A first mounting groove (221) is provided around the outer peripheral surface of the movable part (22), and the first sealing part (3) is arranged in the first mounting groove (221).

5. The solenoid valve according to claim 3, characterized in that The solenoid valve further comprises a control member (23), which is arranged at one end of the valve cavity (11) away from the second medium channel (13); the control member (23) is used to control the sliding of the movable member (22) in the valve cavity (11).

6. The solenoid valve according to claim 5, characterized in that The movable member (22) includes a movable iron core assembly (222), the control member (23) is movably connected to the movable iron core assembly (222), and the control member (23) includes a demagnetized state and a magnetized state; In the demagnetized state, the moving iron core assembly (222) moves in a direction away from the control member (23) to isolate the second chamber (112) from the second medium channel (13); In the magnetized state, the moving iron core assembly (222) moves toward the control member (23) to connect the second chamber (112) and the second medium channel (13).

7. The solenoid valve according to claim 6, characterized in that The solenoid valve further comprises an elastic member (24), wherein the elastic member (24) is arranged between the movable member (22) and the control member (23), one end of the elastic member (24) is connected to the movable member (22), and the other end is connected to the control member (23); In the demagnetized state, the elastic member (24) pushes the moving iron core assembly (222) to move in a direction away from the control member (23) to isolate the second chamber (112) and the second medium channel (13).

8. The solenoid valve according to claim 7, characterized in that The control member (23) is provided with a blind hole (231) at one end facing the movable iron core assembly (222), and the movable iron core assembly (222) is provided with a countersunk hole (2221) at one end facing the control member (23); one end of the elastic member (24) abuts against the blind hole (231), and the other end abuts against the countersunk hole (2221); A first through hole (2222) is further provided in the moving iron core assembly (222), and the first through hole (2222) is communicated with the counterbore (2221) to form the communication channel (21).

9. The solenoid valve according to claim 8, characterized in that The first through hole (2222) is arranged along the axial direction (X) of the valve cavity (11), and passes through the bottom of the counterbore (2221) to one end of the moving iron core assembly (222) close to the second medium channel (13).

10. The solenoid valve according to claim 5, characterized in that The movable member (22) includes a permanent magnet component, the control member (23) is movably connected to the permanent magnet component, and the control member (23) includes a demagnetized state and a magnetized state; In the demagnetized state, the control member (23) and the permanent magnet assembly attract each other, so that the permanent magnet assembly moves toward the control member (23) to connect the second chamber (112) and the second medium channel (13); In the magnetized state, the control member (23) and the permanent magnet assembly repel each other, causing the permanent magnet assembly to move in a direction away from the control member (23) to isolate the second chamber (112) from the second medium channel (13).

11. The solenoid valve according to claim 6, characterized in that The solenoid valve further comprises an electromagnetic coil (4), which is arranged on the outer peripheral surface of the control member (23) and is used to place the control member (23) in the demagnetized state or the magnetized state.

12. The solenoid valve according to any one of claims 3 to 11, characterized in that: The solenoid valve further comprises a valve seat (25), wherein the valve seat (25) is sealingly connected to one end of the valve cavity (11) close to the second medium channel (13); The valve seat (25) is provided with a first channel (251), one end of the first channel (251) is communicated with the second chamber (112), and the other end of the first channel (251) is communicated with the second medium channel (13); When the movable member (22) moves toward the valve seat (25) to abut against the valve seat (25), the movable member (22) blocks the communication between the first channel (251) and the second chamber (112), and the first channel (251) is communicated with the communication channel (21); When the movable member (22) moves in a direction away from the valve seat (25) to separate from the valve seat (25), the first passage (251) is communicated with the second chamber (112).

13. The solenoid valve according to claim 12, characterized in that The cross-sectional area of ​​the communication channel (21) is smaller than the cross-sectional area of ​​the first channel (251).

14. The solenoid valve according to claim 12, characterized in that The movable member (22) further includes a second sealing member (223), the second sealing member (223) being provided at one end of the movable member (22) close to the valve seat (25); the second sealing member (223) having a second through hole (2231), one end of the second through hole (2231) being in communication with the communication channel (21) in the movable member (22); When the movable member (22) drives the second sealing member (223) to abut against the valve seat (25), the other end of the second through hole (2231) is communicated with the first channel (251) of the valve seat (25).

15. The solenoid valve according to any one of claims 5 to 11, characterized in that: The valve body assembly (1) comprises a base (14) and a sleeve (15), wherein the sleeve (15) is arranged in the base (14), the sleeve (15) has a cavity (151), and the cavity (151) and the control member (23) are enclosed to form the valve cavity (11); The first medium channel (12) and the second medium channel (13) are arranged on the base (14) at intervals, the valve cavity (11) is connected to the second medium channel (13), and a second channel (152) is provided on the circumference of the sleeve (15), and the second channel (152) is connected to the first medium channel (12).

16. The solenoid valve according to claim 15, characterized in that There are a plurality of second channels (152), and the plurality of second channels (152) are distributed at intervals along the circumferential direction of the sleeve (15).

17. The solenoid valve according to claim 15, characterized in that The control member (23) is sealed and connected to an end of the sleeve (15) away from the second medium channel (13); The solenoid valve further comprises a valve seat (25), wherein the valve seat (25) at least partially extends into one end of the sleeve (15) close to the second medium channel (13) and is sealedly connected thereto, and the sleeve (15), the control member (23) and the valve seat (25) enclose the valve chamber (11).

18. The solenoid valve according to claim 17, characterized in that The solenoid valve further comprises a third sealing member (5), which is arranged between the valve seat (25) and the base (14) to seal the valve seat (25) and the base (14).

19. The solenoid valve according to claim 18, characterized in that A second mounting groove (252) is provided on the valve seat (25), and the third sealing member (5) is provided in the second mounting groove (252).

20. The solenoid valve according to claim 15, wherein: The valve body assembly (1) further includes a fixing seat (16), which is sleeved on the outer peripheral surface of the sleeve (15) and fixedly connected to the sleeve (15), and the outer peripheral surface of the fixing seat (16) is fixedly connected to the base (14).

21. The solenoid valve according to claim 20, characterized in that The solenoid valve further comprises a fourth sealing member (6), wherein the fourth sealing member (6) is arranged between the fixing seat (16) and the base (14).

22. A suspension system, characterized in that: Comprising a solenoid valve as described in any one of claims 1-21.

23. A vehicle, characterized in that: Includes the suspension system as claimed in claim 22, or includes the solenoid valve as claimed in any one of claims 1-21.

Images