Integrated vehicle high-pressure oil tank isolating valve with pressure sensor

Abstract

The utility model provides an integrated vehicle high-pressure oil tank isolating valve with a pressure sensor. The integrated vehicle high-pressure oil tank isolating valve comprises a shell, an electromagnetic coil assembly, a first sealing assembly and a second sealing assembly. The shell comprises an upper shell and a lower shell, the lower shell is provided with an upper cavity and a lower cavity, and the upper cavity and the lower cavity are communicated through a first opening; the first sealing assembly is located in the upper cavity, and when the first sealing assembly seals the first opening, a first sealing face is formed between the first sealing assembly and the upper cavity; the second sealing assembly is located in the lower cavity and abuts against the first sealing assembly under the action of elastic force so as to seal the air guide channel, when the second sealing assembly seals the air guide channel, a second sealing face is formed between the second sealing assembly and the first sealing assembly, and automatic adjustment of the pressure in the oil tank can be achieved; the structure is more simplified, the overall process of assembly and inspection is shortened, and the production qualification rate of the assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of isolation valve technology, and more specifically, to an integrated automotive high-pressure fuel tank isolation valve with a pressure sensor. Background Technology

[0002] With the increasing severity of vehicle exhaust pollution, emission regulations have become increasingly stringent, restricting vehicle emissions to the atmosphere. This has also spurred the rapid development of hybrid electric vehicle technology. Currently, hybrid vehicles, including plug-in hybrid electric vehicles (PHEVs) and range-extended hybrid electric vehicles (REEVs), have gradually become the most accepted vehicle types for the general public after several years of technological accumulation.

[0003] Hybrid vehicles not only offer excellent fuel economy but also allow for switching between engine and battery operation, effectively alleviating range anxiety associated with the unstable range of pure electric vehicles. However, in hybrid vehicles, the switching between the fuel system and the electrical system can lead to frequent release of fuel vapors from the fuel tank to the carbon canister, potentially saturating it or even venting it directly into the atmosphere. Currently, fuel tank isolation valves are typically used to strictly control the release of fuel vapors from the fuel tank to the carbon canister.

[0004] Currently, domestic fuel tank isolation valve designs employ a separate design for the exhaust valve and the vent valve, resulting in a large size and complex manufacturing process. This presents significant limitations in both the device's placement within the vehicle and the control of the manufacturing process.

[0005] Therefore, existing isolation valves suffer from technical problems such as large size and complicated manufacturing process. Utility Model Content

[0006] The main objective of this invention is to provide an integrated high-pressure fuel tank isolation valve for vehicles with a pressure sensor, in order to solve the technical problems of large size and complicated manufacturing process of isolation valves in related technologies.

[0007] To achieve the above objectives, according to one aspect of the present invention, an integrated automotive high-pressure fuel tank isolation valve with a pressure sensor is provided, comprising:

[0008] The housing includes an upper housing and a lower housing, the upper end of the lower housing is connected to the upper housing, the lower housing has an upper chamber and a lower chamber, the upper chamber and the lower chamber are connected through a first opening, the upper chamber has a first port for connecting to an oil tank and a second port for connecting to a pressure sensor, and the lower chamber has a third port for connecting to a carbon canister;

[0009] An electromagnetic coil assembly is located inside the upper housing. A first receiving cavity is formed on the side of the electromagnetic coil assembly near the first opening. The electromagnetic coil assembly includes an armature that is capable of reciprocating within the first receiving cavity.

[0010] A first sealing assembly is located in the upper chamber. The first sealing assembly is detachably connected to the armature and can move towards or away from the first opening under the drive of the armature to seal or open the first opening. The first sealing assembly has an air guide channel connecting the upper chamber and the lower chamber. When the first sealing assembly seals the first opening, a first sealing surface is formed between the first sealing assembly and the upper chamber.

[0011] The second sealing assembly is located in the lower chamber. At least a portion of the second sealing assembly is movably connected to the first sealing assembly. Under the action of elastic force, the second sealing assembly abuts against the first sealing assembly to seal the air guide channel. When the second sealing assembly seals the air guide channel, a second sealing surface is formed between the second sealing assembly and the first sealing assembly. The second sealing valve includes a valve plate, a guide post, and an exhaust groove, the exhaust groove constituting a part of the air guide channel.

[0012] Furthermore, the first sealing assembly includes a first sealing valve and a first spring. The first sealing valve is connected to the armature, and the first spring is sleeved outside the armature and the first sealing valve. One end of the first spring abuts against the first sealing valve, and the other end of the first spring abuts against the electromagnetic coil assembly, thereby pressing the first sealing valve against the first opening.

[0013] Furthermore, the first sealing valve includes a frame, a first elastic sealing part, and a frustum. The first elastic sealing part is connected to the frame. The frame includes a base plate and a snap-fit ​​tongue. The snap-fit ​​tongue is connected to the base plate. The inner side of the snap-fit ​​tongue is provided with a snap-fit ​​part that is movably connected to the armature. The frustum is located in the middle of the base plate. The frustum is provided with a first through hole for forming the air guide channel. The first elastic sealing part has a first sealing lip and a second sealing lip arranged in an annular shape. The diameter of the first sealing lip is larger than the diameter of the second sealing lip. The first sealing lip is used to seal the first opening.

[0014] Furthermore, a stepped surface is provided on the side of the lower chamber away from the upper chamber. The second sealing assembly includes a second sealing valve and a second spring. The second spring is located in the lower chamber. One end of the second spring abuts against the stepped surface, and the other end of the second spring abuts against the second sealing valve to provide a preload force to the second sealing valve to bring it closer to the first sealing valve.

[0015] Furthermore, the guide post extends from the valve plate toward the first sealing assembly, the guide post is slidably connected to the first through hole, and can reciprocate within the first through hole, the side of the guide post forms the exhaust groove, and the pressure from the oil tank can act on the surface of the valve plate through the exhaust groove.

[0016] Furthermore, two exhaust channels are provided, and the two exhaust channels are symmetrically arranged on both sides of the guide post.

[0017] Furthermore, a positioning ring for connecting to the first sealing assembly is provided on the side of the armature away from the upper cavity, and a vent hole communicating with the air guide channel is provided on the side of the armature.

[0018] Furthermore, the armature has a receiving cavity formed on the side near the lower chamber for accommodating at least a portion of the first sealing assembly, and the upper part of the armature is provided with a second through hole communicating with the receiving cavity, and a shock-absorbing pad is provided on the second through hole.

[0019] Furthermore, the electromagnetic coil assembly also includes a coil frame, an electromagnetic coil, a fixed iron core, and a metal guide sleeve. The coil frame is disposed inside the upper housing, the electromagnetic coil is wound around the coil frame, the fixed iron core is inserted into the electromagnetic coil, and the metal sleeve has a cylindrical structure with one end open, forming the first receiving cavity.

[0020] Furthermore, the metal guide sleeve includes: a guide sleeve body, the guide sleeve body having a cylindrical structure with one open end; and an undercut structure, the undercut structure being disposed at the open end of the guide sleeve body, the undercut structure including a flange and a bending portion, the flange extending from the open end of the guide sleeve body to both sides and being arranged in a ring shape, and the bending portion bending from the edge of the flange in a direction away from the upper housing.

[0021] The high-pressure oil tank isolation valve with pressure sensor provided by this utility model can drive the first sealing component to move away from the lower chamber in the upper chamber by driving the electromagnetic coil assembly, thereby realizing the full opening of the first opening and realizing the rapid release of the internal pressure of the oil tank; at the same time, by forming a second sealing surface between the first sealing component and the second sealing component, the internal pressure of the oil tank can be automatically adjusted. The structure is more simplified, the overall assembly and inspection process is shortened, and the production qualification rate of the assembly is improved. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the structure of an integrated automotive high-pressure fuel tank isolation valve with a pressure sensor according to the present invention is shown.

[0024] Figure 2 A schematic diagram of the structure of the integrated automotive high-pressure fuel tank isolation valve when the solenoid valve is energized, according to the present invention, is shown.

[0025] Figure 3 A schematic diagram of the structure of the lower housing according to the present invention is shown;

[0026] Figure 4 A schematic diagram of the structure of the first sealing valve according to the present invention is shown;

[0027] Figure 5 A schematic diagram of the skeleton of the first sealing valve according to the present invention is shown;

[0028] Figure 6 A schematic diagram of the structure of the second sealing valve according to the present invention is shown;

[0029] Figure 7 A cross-sectional view of the second sealing valve according to the present invention is shown;

[0030] Figure 8 A schematic diagram of the guide sleeve according to the present invention is shown;

[0031] Figure 9 A schematic diagram of the armature structure according to the present invention is shown;

[0032] Figure 10 A schematic diagram of the assembly of the armature and the first sealing assembly according to the present invention is shown.

[0033] The above figures include the following reference numerals:

[0034] 10. Housing; 11. Upper housing; 12. Lower housing; 121. Upper chamber; 1211. First port; 1212. Second port; 122. Lower chamber; 1221. Third port; 1222. Stepped surface; 123. First opening; 20. Electromagnetic coil assembly; 21. Armature; 211. Positioning ring; 212. Vent hole; 213. Second through hole; 214. Anti-vibration pad; 22. Coil frame; 23. Electromagnetic coil; 24. Fixed iron core; 25. Metal guide sleeve; 251. Guide sleeve body; 252. Inverted structure; 30, First sealing assembly; 31, First sealing valve; 311, Frame; 3111, Base plate; 3112, Snap-fit ​​tongue; 3113, Snap-fit ​​part; 3114, Frustum; 3115, First through hole; 312, First elastic sealing part; 3121, First sealing lip; 3122, Second sealing lip; 32, First spring; 40, Second sealing assembly; 41, Second sealing valve; 411, Valve plate; 412, Guide post; 413, Exhaust groove; 414, Positioning boss; 42, Second spring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0038] To address the technical problems of large size and complicated manufacturing process of existing isolation valves, this utility model provides an integrated high-pressure fuel tank isolation valve for vehicles with a pressure sensor.

[0039] like Figures 1 to 10 As shown, this utility model provides an integrated automotive high-pressure fuel tank isolation valve with a pressure sensor, such as... Figure 1 As shown, the integrated automotive high-pressure fuel tank isolation valve with pressure sensor includes a housing 10, an electromagnetic coil assembly 20, a first sealing assembly 30, and a second sealing assembly 40; wherein, the housing 10 includes an upper housing 11 and a lower housing 12, the upper housing 11 is used to accommodate the electromagnetic coil assembly 20, and the lower housing 12 is used to accommodate the first sealing assembly 30 and the second sealing assembly 40. The upper end of the lower housing 12 is connected to the upper housing 11. The lower housing 12 has an upper chamber 121 and a lower chamber 122. The upper chamber 121 and the lower chamber 122 are connected through a first opening 123. The upper chamber 121 has a first port 1211 for connecting to the oil tank and a second port 1212 for connecting to the pressure sensor. The lower chamber 122 has a third port 1221 for connecting to the carbon canister. Thus, the upper chamber 121 is connected to the oil tank through the first port 1211, and the lower chamber 122 is connected to the carbon canister through the third port 1221. At the same time, the upper chamber 121 is connected to the pressure sensor through the second port 1212. The pressure sensor can collect the pressure information inside the upper chamber 121.

[0040] The lower shell 12 is a shell structure formed by one-piece injection molding, which reduces the laser welding process, reduces the number of components, and helps to improve production efficiency and reduce production costs.

[0041] The electromagnetic coil assembly 20 is located inside the upper housing 11. A first receiving cavity is formed on the side of the electromagnetic coil assembly 20 near the first opening 123. The electromagnetic coil assembly 20 includes an armature 21, which can reciprocate within the first receiving cavity. The first sealing assembly 30 is located inside the upper chamber 121. The first sealing assembly 30 is detachably connected to the armature 21, so that it can move towards or away from the first opening 123 under the drive of the armature 21 to seal or open the first opening 123. When the first sealing assembly 30 seals the first opening 123, the first sealing assembly 30 abuts against the inner surface of the upper chamber 121, and a first sealing surface is formed between the first sealing assembly 30 and the upper chamber 121.

[0042] The first sealing assembly 30 has an air passage connecting the upper chamber 121 and the lower chamber 122. The second sealing assembly 40 is located in the lower chamber 122. At least a portion of the second sealing assembly 40 is movably connected to the first sealing assembly 30. Under the action of elastic force, the second sealing assembly 40 abuts against the first sealing assembly 30 to seal the air passage. When the second sealing assembly 40 seals the air passage, a second sealing surface is formed between the second sealing assembly 40 and the first sealing assembly 30. The second sealing valve 41 includes a valve plate 411, a guide post 412, and an exhaust groove 413. The exhaust groove 413 constitutes a part of the air passage.

[0043] By applying the high-pressure oil tank isolation valve provided by this utility model, the first sealing component 30 can be driven to move away from the lower chamber 122 in the upper chamber 121 by driving the electromagnetic coil assembly 20, thereby realizing the full opening of the first opening 123 and realizing the rapid release of the internal pressure of the oil tank; at the same time, by forming a second sealing surface between the first sealing component 30 and the second sealing component 40, the internal pressure of the oil tank can be automatically adjusted, the structure is more simplified, the overall assembly and inspection process is shortened, and the production qualification rate of the assembly is improved.

[0044] Furthermore, the first sealing assembly 30 includes a first sealing valve 31 and a first spring 32. The first sealing valve 31 is connected to the armature 21, and the first spring 32 is sleeved on the outside of the armature 21 and the first sealing valve 31. One end of the first spring 32 abuts against the first sealing valve 31, and the other end of the first spring 32 abuts against the electromagnetic coil assembly 20, thereby pressing the first sealing valve 31 against the first opening 123.

[0045] Preferably, the first spring 32 can be, for example, a frustum-shaped compression spring, as shown in the figure. The side with the larger diameter of the first spring 32 presses against the electromagnetic coil assembly 20, and the side with the smaller diameter of the first spring 32 presses against the first sealing valve 31, thereby applying a force away from the electromagnetic coil assembly 20 to the first sealing valve 31, causing it to press against the inner surface of the lower part of the upper chamber 121, thereby achieving a seal on the first opening 123.

[0046] Specifically, the first sealing valve 31 includes a frame 311, a first elastic sealing part 312, and a frustum 3114. The first elastic sealing part 312 is connected to the frame 311. The first elastic sealing part 312 is made of rubber and is vulcanized and fixed to the frame 311. The frame 311 includes a base plate 3111 and a snap-fit ​​tongue 3112. The snap-fit ​​tongue 3112 is connected to the base plate 3111. The inner side of the snap-fit ​​tongue 3112 is provided with a snap-fit ​​part 3113 that is movably connected to the armature 21. The snap-fit ​​tongue 3112 has a certain elasticity, so that during the assembly process, the snap-fit ​​tongue 3112 can elastically abut against the outer periphery of the armature 21, and the snap-fit ​​part 3113 engages with the armature 21, thereby realizing the detachable connection between the armature 21 and the first sealing assembly 30. The frustum 3114 is located in the middle of the base plate 3111. The frustum 3114 is provided with a first through hole 31153114 for forming an air guide channel. The first elastic sealing part 312 has a first sealing lip 3121 and a second sealing lip 3122 arranged in annular shape. The diameter of the first sealing lip 3121 is larger than the diameter of the second sealing lip 3122. The first sealing lip 3121 is used to seal the first opening 123.

[0047] Furthermore, a stepped surface 1222 is provided on the side of the lower chamber 122 away from the upper chamber 121. The second sealing assembly 40 includes a second sealing valve 41 and a second spring 42. The second spring 42 is located in the lower chamber 122. One end of the second spring 42 abuts against the stepped surface 1222, and the other end of the second spring 42 abuts against the second sealing valve 41 to provide a preload force to the second sealing valve 41 to bring it closer to the first sealing valve 31.

[0048] Specifically, such as Figure 6 and Figure 7 As shown, the guide post 412 extends from the valve plate 411 toward the direction close to the first sealing assembly 30. The guide post 412 is slidably connected to the first through hole 3115 and can reciprocate within the first through hole 3115. An exhaust groove 413 is formed on the side of the guide post 412. The pressure from the oil tank can act on the upper surface of the valve plate 411 through the exhaust groove 413, thereby transmitting the pressure to the second spring 42 located in the lower chamber 122 through the valve plate 411. When the pressure is greater than the spring force of the second spring 42, it will push the second spring 42 to move downward, thereby opening the air passage between the upper chamber 121 and the lower chamber 122, realizing gas communication between the oil tank and the carbon canister.

[0049] Among them, there may be two or more exhaust grooves 413, and the two or more exhaust grooves 413 are evenly arranged on the outer periphery of the guide post 412.

[0050] Optionally, the second sealing valve 41 further includes a positioning boss 414, which is located on the side of the valve plate 411 away from the guide post 412. One end of the second spring 42 abuts against the valve plate 411 and is sleeved on the outer periphery of the positioning boss 414, thereby positioning the second spring 42 through the positioning boss 414. This arrangement is beneficial for the installation and positioning of the second sealing assembly 40.

[0051] Furthermore, a positioning ring 211 for connecting with the first sealing assembly 30 is provided on the side of the armature 21 away from the upper cavity, and a vent hole 212 communicating with the air guide channel is provided on the side of the armature 21. High-pressure gas in the oil tank can enter the interior of the armature 21 through the vent hole, thereby entering the air guide channel.

[0052] In one specific embodiment of this application, the electromagnetic coil assembly 20 further includes a coil frame 22, an electromagnetic coil 23, a fixed iron core 24, and a metal guide sleeve 25. The coil frame 22 is disposed within the upper housing 11, the electromagnetic coil 23 is wound around the coil frame 22, and the fixed iron core 24 is inserted into the electromagnetic coil 23. The metal guide sleeve 25 has a cylindrical structure with one open end, and is located between the coil frame 22 and the fixed iron core 24, forming a first receiving cavity. During assembly, the metal guide sleeve 25 and the armature 21 are fitted with a clearance fit. The metal guide sleeve 25 directly guides the up-and-down sliding of the armature 21. This arrangement is more conducive to the sliding positioning of the armature 21 and facilitates product processing. Simultaneously, the floating connection of the armature 21 replaces the traditional valve assembly with a central guide shaft, thereby avoiding the constraints of assembly dimensions and assembly processes imposed by the central guide shaft, which helps reduce process difficulty and cost.

[0053] Preferably, the metal guide sleeve 25 can be made of stainless steel, for example, with a thickness of 0.1mm-0.3mm, preferably 0.2mm.

[0054] The metal guide sleeve 25 includes a guide sleeve body 251 and an undercut structure 252. The guide sleeve body 251 is a cylindrical structure with one open end, which facilitates product processing. The undercut structure 252 is located at the open end of the guide sleeve body 251 and includes a flange and a bent portion. The flange extends from the open end of the guide sleeve body to both sides and is arranged in a ring shape. An elastic sealing ring can also be provided between the metal guide sleeve 25 and the upper housing 11. During installation, the elastic sealing ring abuts against the ring structure, thereby supporting the elastic sealing ring through the flange. The bent portion bends from the edge of the flange away from the upper housing 11, allowing the end of the bent portion to abut against the upper housing 11.

[0055] Optionally, the bottom of the guide sleeve body 251 is also provided with a relief groove; the armature 21 near the lower chamber 122 has a receiving cavity for accommodating at least a portion of the first sealing component 30, the armature 21 is provided with a second through hole 213 communicating with the receiving cavity, and a shock-absorbing pad 214 is provided on the second through hole 213; the shock-absorbing pad 214 may also be provided with a central through hole communicating with the second through hole 213, the shock-absorbing pad 214 is T-shaped in general, one end of the T-shape is connected to the second through hole 213, and the shape of the other end of the T-shape matches the relief groove. During operation, the shock-absorbing pad 214 can abut against the relief groove, thereby mitigating the possible collision between the armature 21 and the bottom of the guide sleeve body 251 through the elasticity of the shock-absorbing pad 214, thereby helping to avoid collision noise that may be generated during the reciprocating motion of the armature 21 and the damage that may be caused to the components.

[0056] The integrated high-pressure fuel tank isolation valve for vehicles with a pressure sensor provided by this utility model has three working conditions during use: refueling, depressurization, and air replenishment.

[0057] In the refueling operation, the solenoid valve assembly is energized. After the solenoid valve assembly is energized, the armature 21, under the action of electromagnetic force, drives the first sealing assembly 30 to move upward, and the first opening 123 is fully opened, so that the pressure inside the oil tank is released quickly. The gas flow direction is: from the oil tank, it enters the upper chamber 121 through the first port 1211, enters the lower chamber 122 through the first opening 123, and then enters the carbon canister through the third port 1221. At this time, the electromagnetic force needs to overcome the pressure of the oil tank pressure acting on the first sealing valve 31 and the spring force of the first spring 32, so that the rubber seal at the front of the first sealing valve 31 and the sealing step surface 1222 on the lower housing 12 are disengaged to achieve active pressure relief.

[0058] The pressure relief condition occurs when the vehicle has been parked for an extended period. As the gasoline in the fuel tank evaporates under external conditions such as temperature fluctuations, the internal pressure of the fuel tank rises. When the pressure reaches a certain limit, the pressure acting on the second sealing valve 41 exceeds the elastic force of the second spring 42, causing the second sealing valve 41 to move away from the first sealing valve 31, opening the venting passage and completing the passive pressure relief. The gas flow direction is as follows: from the fuel tank, it enters the upper chamber 121 through the first port 1211, then enters the venting passage through the vent hole, and finally enters the lower chamber 122, before entering the carbon canister through the third port 1221. Therefore, by adjusting the elastic coefficient of the second spring 42, the pressure at which the venting passage opens can be adjusted, thus ensuring that the pressure inside the fuel tank remains within a safe range.

[0059] The air replenishment condition occurs when the vehicle engine operates for an extended period, generating negative pressure in the fuel tank. When the negative pressure reaches a certain limit, the first sealing valve 31 opens upwards under the positive pressure of the carbon canister, replenishing the fuel tank with air. The gas flow is as follows: gas enters the lower chamber from the carbon canister through the third port 1221, then enters the upper chamber 121 through the first opening 123, and finally enters the fuel tank through the first port 1211. At this time, the opening pressure limit can be adjusted by adjusting the elastic coefficient, i.e., the elastic stiffness, of the first spring 32. By setting the first spring 32 and the second spring 42, the opening pressure of the pressure relief condition and the air replenishment condition can be adjusted, thereby achieving self-regulation of the internal pressure of the fuel tank.

[0060] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0063] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated high-pressure tank isolation valve for vehicles with a pressure sensor, characterized in that, The utility model relates to a fuel tank pressure sensor, including: A shell, the shell includes upper shell and lower shell, the upper end of lower shell is connected with upper shell, lower shell has upper chamber and lower chamber, the upper chamber is connected with lower chamber through first opening, the upper chamber has first port for connecting with oil tank and second port for connecting with pressure sensor, lower chamber has third port for connecting with carbon tank; An electromagnetic coil assembly is located in the upper shell, the electromagnetic coil assembly is formed with a first accommodating cavity on one side close to the first opening, the electromagnetic coil assembly includes an armature, the armature can reciprocate in the first accommodating cavity; A first sealing assembly is located in the upper chamber, the first sealing assembly is detachably connected with the armature and can move towards or away from the first opening under the driving of the armature to seal or open the first opening, the first sealing assembly has a gas guide channel connecting the upper chamber and the lower chamber, when the first sealing assembly seals the first opening, a first sealing surface is formed between the first sealing assembly and the upper chamber; A second sealing assembly is located in the lower chamber, at least a part of the second sealing assembly is movably connected with the first sealing assembly, the second sealing assembly abuts towards the first sealing assembly under the action of elastic force to seal the gas guide channel, when the second sealing assembly seals the gas guide channel, a second sealing surface is formed between the second sealing assembly and the first sealing assembly, the second sealing surface includes a valve plate, a guide column and an exhaust groove, the exhaust groove constitutes a part of the gas guide channel.

2. The integrated high pressure reservoir isolation valve with pressure sensor for vehicle according to claim 1, characterized in that, The first sealing assembly includes a first sealing valve and a first spring, the first sealing valve is connected with the armature, the first spring is sleeved outside the armature and the first sealing valve, one end of the first spring abuts against the first sealing valve, the other end of the first spring abuts against the electromagnetic coil assembly, so as to press the first sealing valve on the first opening.

3. The integrated high pressure tank isolation valve with pressure sensor for vehicle according to claim 2, characterized in that, The first sealing valve includes a framework, a first elastic sealing part and a circular truncated cone, the first elastic sealing part is connected with the framework, the framework includes a bottom plate and a clamping tongue, the clamping tongue is connected with the bottom plate, a clamping part movably connected with the armature is arranged on the inner side of the clamping tongue, the circular truncated cone is located in the middle of the bottom plate, a first through hole for forming the gas guide channel is arranged on the circular truncated cone, the first elastic sealing part has a first sealing lip and a second sealing lip arranged in a ring shape, the diameter of the first sealing lip is larger than that of the second sealing lip, and the first sealing lip is used for sealing the first opening.

4. The integrated high pressure tank isolation valve with pressure sensor for vehicle according to claim 3, characterized in that, A step surface is arranged on the side of the lower chamber away from the upper chamber, the second sealing assembly includes a second sealing valve and a second spring, the second spring is located in the lower chamber, one end of the second spring abuts against the step surface, and the other end of the second spring abuts against the second sealing valve to provide a pre-tightening force for the second sealing valve to move towards the first sealing valve.

5. The integrated high pressure tank isolation valve with pressure sensor for vehicle according to claim 4, characterized in that, The guide column extends from the valve plate to the direction close to the first sealing assembly, the guide column is in sliding connection with the first through hole and can reciprocate in the first through hole, the side surface of the guide column forms the exhaust groove, and the pressure from the oil tank can act on the surface of the valve plate through the exhaust groove.

6. The integrated high pressure tank isolation valve with pressure sensor for vehicle according to claim 5, characterized in that, The exhaust groove is provided with two exhaust grooves which are symmetrically arranged on the two sides of the guide column.

7. The integrated high pressure reservoir isolation valve with pressure sensor for automotive applications as claimed in claim 1 wherein, The side of the armature away from the upper chamber is provided with a positioning ring for connecting with the first sealing assembly, and the side surface of the armature is provided with a gas permeable hole in communication with the air guide channel.

8. The integrated high pressure reservoir isolation valve with pressure sensor for automotive applications as claimed in claim 1 wherein, The side of the armature close to the lower chamber is formed with an accommodation cavity for accommodating at least a part of the first sealing assembly, the upper part of the armature is provided with a second through hole in communication with the accommodation cavity, and the second through hole is provided with a shockproof pad.

9. The integrated high pressure reservoir isolation valve with pressure sensor for automotive applications as claimed in claim 1 wherein, The electromagnetic coil assembly further comprises a coil former, an electromagnetic coil, a fixed iron core and a metal guide sleeve, wherein the coil former is arranged in the upper shell, the electromagnetic coil is wound on the coil former, the fixed iron core is inserted into the electromagnetic coil, the metal guide sleeve is in a cylindrical structure with one end being open and forms the first accommodation cavity.

10. The integrated high pressure reservoir isolation valve with pressure sensor for automotive applications as claimed in claim 9 wherein, The metal guide sleeve comprises: a guide sleeve body in a cylindrical structure with one end being open; a reverse buckle structure arranged at the open end of the guide sleeve body, the reverse buckle structure comprises a flange and a bending part, the flange extends to both sides from the open end of the guide sleeve body and is arranged in a ring shape, and the bending part is arranged away from the upper shell from the edge of the flange.

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