High-pressure oil tank isolating valve for vehicle

Abstract

The utility model provides a vehicle high-pressure oil tank isolating valve, which comprises a shell, a coil assembly, an armature assembly and a pressure release valve assembly, a first accommodating cavity and a second accommodating cavity are formed in the shell, a partition plate is provided with a first channel and a second channel, and fluid communication between the first accommodating cavity and the second accommodating cavity is realized through the first channel and the second channel. At least one part of the armature assembly elastically abuts against the partition plate so as to seal the second channel. At least one part of the armature assembly can abut against at least one part of the pressure release valve assembly so as to seal the first channel, and the armature assembly can be driven by the coil assembly to reciprocate in the shell; according to the oil tank isolating valve, the coil assembly, the armature assembly and the pressure release valve assembly are integrally arranged in the shell, the size of the oil tank isolating valve is reduced, the machining process is reduced, the first channel partially participates in the pressure release work of the second channel, the circulation sectional area is increased, and the requirements for the pressure release speed under different working conditions can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel tank isolation valves, and more specifically, to a high-pressure fuel tank isolation valve for vehicles. Background Art

[0002] With the increasingly serious pollution of automobile exhaust, the current automobile exhaust emission regulations have imposed stricter constraints on the emissions allowed by vehicles into the atmosphere. However, this has also promoted the rapid development of automotive hybrid technologies. Currently, hybrid vehicle models, including plug-in hybrid electric vehicles (PHEVs) and range-extended electric vehicles (REEVs), have gradually become the most acceptable models to the general public after several years of technological accumulation. Hybrid vehicle models not only have good fuel economy but also can switch between engine operation and battery operation, effectively addressing the anxiety caused by the unstable mileage of pure electric vehicles. However, in hybrid vehicle models, the switching between the fuel circuit and the electrical circuit may cause the frequent transfer of oil and gas vapor inside the fuel tank to the carbon canister, leading to its saturation or even direct venting to the atmosphere. Currently, a fuel tank isolation valve is usually used to strictly control the emission of the fuel tank's oil and gas evaporation gas to the carbon canister. Currently, the domestic design of fuel tank isolation valves adopts a split design of an exhaust valve and a vent valve, which is large in size and has a cumbersome manufacturing process, with significant limitations both in terms of vehicle interior devices and manufacturing process control. At the same time, the cross-sectional area of the pressure relief channel of the existing isolation valve is small, unable to meet the requirements for the pressure relief speed under different working conditions. Summary of the Utility Model

[0003] The main objective of the present utility model is to provide a high-pressure fuel tank isolation valve for vehicles to solve the problems in the related technologies.

[0004] To achieve the above object, according to one aspect of the present utility model, a vehicle high-pressure fuel tank isolation valve is provided, which includes a housing, a coil assembly, an armature assembly, and a pressure relief valve assembly. Among them, a first accommodation cavity and a second accommodation cavity are formed in the housing. The first accommodation cavity is located above the second accommodation cavity. The first accommodation cavity and the second accommodation cavity are separated by a partition. A first opening for communicating with a first pipeline is provided on the first accommodation cavity, and a second opening for communicating with a second pipeline is provided on the second accommodation cavity. A first channel located at the central position and a second channel surrounding the first channel are provided on the partition. The coil assembly and the armature assembly are located in the first accommodation cavity. At least a part of the armature assembly elastically presses against the partition to seal the second channel. The pressure relief valve assembly is located in the second accommodation cavity. At least a part of the pressure relief valve elastically abuts against the partition. At least a part of the armature assembly can abut against at least a part of the pressure relief valve assembly to seal the first channel. The armature assembly can reciprocate in the housing under the drive of the coil assembly, thereby controlling the gas communication between the first accommodation cavity and the second accommodation cavity.

[0005] Further, the armature assembly includes: an armature;

[0006] a first sealing valve detachably connected to the armature;

[0007] a first spring, one end of the first spring abuts against the coil assembly, and the other end of the first spring abuts against the first sealing valve, thereby pressing the first sealing valve against the partition.

[0008] Further, the lower part of the armature has a stepped first section, a second section, and a third section, where the diameters of the first section, the second section, and the third section decrease in sequence. A ring-shaped boss is formed between the second section and the third section. The first sealing valve is in a cylindrical shape with one end open. The armature is partially accommodated inside the cylindrical shape. A clamping portion is provided on the inner wall of the cylindrical shape. The ring-shaped boss can be detachably engaged with the clamping portion.

[0009] Further, a guiding portion is formed on the end face of the armature close to the partition. During the reciprocating movement of the armature, the guiding portion can pass through the first sealing valve and the first channel to abut against the pressure relief valve assembly.

[0010] Further, a ring-shaped first support rib extends from the partition towards the second accommodation cavity in the first channel.

[0011] Further, a second support rib extends from the partition towards the second accommodation cavity in the second channel.

[0012] Furthermore, there are a plurality of the second support ribs, and reinforcing ribs are arranged on the second support ribs.

[0013] Furthermore, the pressure relief valve assembly includes: a second sealing valve having a through-going guide hole, and the guide portion is in sliding and sealing fit with the guide hole;

[0014] a second spring, one end of the second spring abuts against the housing, and the other end of the second spring abuts against the second sealing valve.

[0015] Furthermore, the housing has a plurality of support ribs, the support ribs extend outward from the inner surface of the second accommodation cavity, and one end of the second spring abuts against the support ribs.

[0016] Furthermore, the housing includes an upper housing, a middle housing and a lower housing. The upper housing is connected to the middle housing to form the first accommodation cavity, the lower housing is connected to the middle housing to form the second accommodation cavity, the middle housing is provided with the first opening, and the lower housing is provided with the second opening.

[0017] Furthermore, one end of the first spring abuts against the inner cavity of the bottom cylinder of the winding skeleton of the coil assembly, and / or, the outer cylindrical surface of the winding skeleton of the coil assembly is a mating surface sealed with the housing.

[0018] Applying the technical solution of the present utility model, the coil assembly, the armature assembly and the pressure relief valve assembly are integrally arranged in the housing, reducing the volume of the fuel tank isolation valve. At the same time, the processing technology is reduced. By providing the first channel and the second channel, during the opening process of the solenoid valve, the first channel can partially participate in the pressure relief work of the second channel. Under the condition that the product size remains unchanged, the overall flow cross-sectional area is enlarged, the flow capacity is enhanced, the pressure drop is reduced, and the requirement for the pressure relief speed under different working conditions can be met.

[0019] In the case where the product size remains unchanged, the overall flow cross-sectional area is enlarged, the flow capacity is enhanced, the pressure drop is reduced, and the requirement for the pressure relief speed under different working conditions can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 shows a schematic diagram of a vehicle high-pressure fuel tank isolation valve according to the present utility model;

[0022] Figure 2 shows Figure 1 a cross-sectional view taken along the B-B section in

[0023] Figure 3Shows a schematic structural diagram of the middle housing of a vehicle high-pressure fuel tank isolation valve according to the present utility model;

[0024] Figure 4 Shows a top view of the middle housing of a vehicle high-pressure fuel tank isolation valve according to the present utility model;

[0025] Figure 5 Shows Figure 4 A cross-sectional view along the C-C section;

[0026] Figure 6 Shows a schematic diagram of the armature assembly of a vehicle high-pressure fuel tank isolation valve according to the present utility model;

[0027] Figure 7 Shows a schematic diagram of the lower housing of a vehicle high-pressure fuel tank isolation valve according to the present utility model;

[0028] Figure 8 Shows a schematic diagram of a vehicle high-pressure fuel tank isolation valve in an energized state of the coil assembly according to the present utility model;

[0029] Figure 9 Shows a schematic diagram of a vehicle high-pressure fuel tank isolation valve in a state of autonomous pressure relief of the fuel tank according to the present utility model.

[0030] Among them, the above-mentioned drawings include the following reference numerals:

[0031] 100, vehicle high-pressure fuel tank isolation valve; 10, housing; 11, first accommodation cavity; 12, second accommodation cavity; 13, partition; 131, first channel; 132, second channel; 133, first support rib; 134, second support rib; 135, reinforcing rib; 14, support rib; 15, upper housing; 16, middle housing; 17, lower housing; 20, coil assembly; 30, armature assembly; 31, armature; 311, first section; 312, second section; 313, third section; 314, annular boss; 315, guiding part; 32, first sealing valve; 321, clamping part; 33, first spring; 40, pressure relief valve assembly; 41, second sealing valve; 42, second spring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] In order to solve the technical problems existing in the prior art, such as the large volume of the fuel tank isolation valve, the cumbersome manufacturing process, the relatively small cross-sectional area of the pressure relief channel, and the inability to meet the requirements for the pressure relief speed under different working conditions, the present invention provides a vehicle high-pressure fuel tank isolation valve.

[0036] The first embodiment of the present invention provides a vehicle high-pressure fuel tank isolation valve, as Figures 1 to 9As shown in the figure, the high-pressure fuel tank isolation valve for vehicles includes a housing 10, a coil assembly 20, an armature assembly 30, and a pressure relief valve assembly 40. Among them, a first accommodation cavity 11 and a second accommodation cavity 12 are formed in the housing 10. The first accommodation cavity 11 is located above the second accommodation cavity 12, and the first accommodation cavity 11 and the second accommodation cavity 12 are partitioned by a partition plate 13. A first channel 131 is provided at the central position on the partition plate 13, and a second channel 132 is provided around the first channel 131. Through the first channel 131 and the second channel 132, the first accommodation cavity 11 and the second accommodation cavity 12 are in fluid communication. The coil assembly 20 and the armature assembly 30 are located in the first accommodation cavity 11, and at least a part of the armature assembly 30 elastically presses against the partition plate 13 to seal the second channel 132; the pressure relief valve assembly 40 is located in the second accommodation cavity 12, and at least a part of the armature assembly 30 can abut against at least a part of the pressure relief valve assembly 40 to seal the first channel 131. The armature assembly 30 can reciprocate in the housing 10 under the drive of the coil assembly 20, so as to control the gas communication between the first accommodation cavity 11 and the second accommodation cavity 12.

[0037] By applying the high-pressure fuel tank isolation valve for vehicles provided by the present utility model, the coil assembly 20, the armature assembly 30, and the pressure relief valve assembly 40 are integrally arranged in the housing 10, reducing the volume of the fuel tank isolation valve. At the same time, the processing technology is reduced. By providing the first channel 131 and the second channel 132, during the opening process of the solenoid valve, the first channel 131 can partially participate in the pressure relief work of the second channel 132. Without changing the product size, the overall flow cross-sectional area is enlarged, the flow capacity is enhanced, and the pressure drop is reduced, which can meet the requirements for the pressure relief speed under different working conditions.

[0038] Among them, a first opening for communicating with a first pipeline is provided on the first accommodation cavity 11. The first pipeline is used to communicate with the fuel tank of the vehicle, so that through the first opening, the first accommodation cavity 11 can be in fluid communication with the fuel tank of the vehicle. A second opening for communicating with a second pipeline is provided on the second accommodation cavity 12. The second pipeline is used to connect with the carbon canister of the vehicle, so that through the second opening, the second accommodation cavity 12 can be in fluid communication with the carbon canister. By controlling the opening of the first channel 131 and / or the second channel 132, the fluid communication between the fuel tank and the carbon canister is realized, and the high-pressure steam in the fuel tank is transported to the carbon canister connected to the second pipeline for adsorption.

[0039] Further, the coil assembly 20 is a winding component, which includes a connector, a winding skeleton, a solenoid valve coil, and a fixed iron core component, and a sealing O-ring for preventing the external leakage of high-pressure oil vapor is designed inside the fixed iron core; the fixed iron core is designed at the exact center of the coil assembly 20, and a guiding shaft for the up and down movement of the armature 31 is provided at the center. The outer shell of the coil assembly 20 is designed with a connector for receiving ECU control and two flange plates for vehicle assembly. The lower part of the winding skeleton is a cylindrical surface assembled with the housing 10, and the outer side is laser welded with the inner surface of the upper air chamber of the housing 10 to achieve connection and sealing.

[0040] As Figure 6 shown, the armature assembly 30 includes an armature 31, a first sealing valve 32, and a first spring 33. Among them, the first sealing valve 32 is detachably connected to the armature 31. One end of the first spring 33 abuts against the coil assembly 20, and the other end of the first spring 33 abuts against the first sealing valve 32, so as to press the first sealing valve 32 against the partition plate 13.

[0041] Specifically, the lower part of the armature 31 includes a first section 311, a second section 312, and a third section 313 distributed in a stepped manner, where the diameters of the first section 311, the second section 312, and the third section 313 decrease in sequence, and an annular boss 314 is formed between the second section 312 and the third section 313; the first sealing valve 32 is in the shape of a cylinder with one end open, and the armature 31 is partially accommodated inside the cylinder. An avoidance opening is also provided on the inner wall of the cylinder, so that the first pipeline can always be in gas communication with the first channel 131 or the second channel 132; a clamping portion 321 is provided on the inner wall of the cylinder, and the annular boss 314 can be detachably engaged with the clamping portion 321.

[0042] Preferably, there are four clamping portions 321, which are evenly distributed on the inner surface of the first sealing valve 32. The four clamping portions 321 can be snap-fitted with the annular boss 314, so as to achieve the detachable connection between the armature 31 and the first sealing valve 32.

[0043] Among them, the first spring 33 is sleeved outside the first sealing valve 32. The upper end of the first spring 33 abuts against the coil assembly 20. Preferably, the upper end of the first spring 33 is fixed in the fixed ring groove designed at the lower part of the winding terminal in the coil assembly 20, and the lower end of the first spring 33 is fixed on the circumference of the first sealing valve 32, so as to fix the armature assembly 30 in the housing 10.

[0044] In another embodiment of the present utility model, a guiding portion 315 is formed on the end surface of one end of the armature 31 close to the partition plate 13, and the periphery of the guiding portion 315 is formed into an annular sealing plane that cooperates with the second sealing valve 41. During the reciprocating movement of the armature 31, the guiding portion 315 can pass through the first sealing valve 32 and the first channel 131 to abut against the pressure relief valve assembly 40.

[0045] Specifically, the pressure relief valve assembly 40 includes a second sealing valve 41 and a second spring 42. The second sealing valve 41 has a through-going guiding hole, and the guiding portion 315 is in sliding sealing cooperation with the guiding hole; preferably, the inner diameter of the guiding hole can be 3-4 cm. When the coil assembly 20 is powered on, the armature assembly 30 overcomes the spring force of the first spring 33 and the pressure of the high-pressure oil vapor in the fuel tank connected to the first accommodating cavity 11, and moves upward to open the second channel 132 on the housing 10 to achieve pressure relief. At the same time, during the upward movement of the armature 31, the guiding portion 315 slides out of the guiding hole. At this time, the guiding hole is formed into an auxiliary pressure relief hole, and the first channel 131 is partially opened to achieve auxiliary pressure relief.

[0046] Wherein, one end of the second spring 42 abuts against the housing 10, and the other end of the second spring 42 abuts against the second sealing valve 41, so as to press the second sealing valve 41 towards the armature 31, making the second sealing valve 41 closely adhere to the annular sealing plane, thereby sealing the first channel 131 in the housing 10.

[0047] The second sealing valve 41 has a cylindrical structure with one end open. The open end is located on the side away from the partition plate 13. The guiding hole is formed on the bottom surface of the cylindrical structure, and the abutting surface of the second spring 42 is also formed on the bottom surface of the cylindrical structure.

[0048] In order to improve the sealing effect, rubber seals can also be provided at the sealing ends of the first sealing valve 32 and the second sealing valve 41. The rubber seals can be installed at the sealing ends of the first sealing valve 32 and / or the second sealing valve 41 in a detachable manner, or can be installed at the sealing ends of the first sealing valve 32 and / or the second sealing valve 41 in a fixed connection manner.

[0049] In order to support the second spring 42, the housing 10 has a plurality of support ribs 14. The support ribs 14 extend outward from the inner surface of the second accommodating cavity 12, and one end of the second spring 42 abuts against the support ribs 14. With such a layout setting method, integrating the support ribs 14 on the housing 10 can reduce the number of components and improve the assembly efficiency.

[0050] Such as Figure 7As shown, there are multiple support ribs 14, at least one of which extends from the side surface of the housing 10, and the remaining support ribs 14 extend from the bottom surface of the housing 10 opposite to the partition 13 towards the partition 13, so as to achieve multi-point support for the second spring 42 through the multiple support ribs 14.

[0051] In another embodiment of the present invention, the first channel 131 extends from the partition 13 towards the second accommodation cavity 12 and has a ring-shaped first support rib 133, so as to further assist the guiding portion 315 in positioning.

[0052] Furthermore, the second channel 132 extends from the partition 13 towards the second accommodation cavity 12 and has a second support rib 134; preferably, a plurality of the second support ribs 134 can be provided, and reinforcing ribs 135 are also provided on the second support ribs 134. Such a setting method can facilitate the guiding of the second sealing valve 41, and at the same time, is beneficial to improving the strength of the second support rib 134.

[0053] For the convenience of assembly and installation, the housing 10 includes an upper housing 15, a middle housing 16 and a lower housing 17. The upper housing 15 is connected to the middle housing 16 to form the first accommodation cavity 11, the lower housing 17 is connected to the middle housing 16 to form the second accommodation cavity 12. The middle housing 16 is provided with the first opening, the lower housing 17 is provided with the second opening. The lower housing 17 and the middle housing 16 can be assembled and sealed by laser welding, and the angle of the second pipeline can be adjusted according to requirements. The coil assembly 20 is assembled into the upper housing 15. Among them, the outer cylinder at the bottom of the winding skeleton in the coil assembly 20 and the upper housing 15 are connected by laser welding, and the sealing between the coil skeleton and the housing 10 is achieved by laser welding.

[0054] During the use of the vehicle high-pressure fuel tank isolation valve provided by the present invention, there are three working conditions in total: the normal normally closed working condition, the pressure relief working condition when the coil is powered on, and the mechanical valve pressure relief working condition under the condition of high fuel tank pressure;

[0055] Under normal working conditions, the coil is powered off, and the armature assembly 30 seals the second channel 132 in the housing 10 under the spring force of the first spring 33, and the mechanical pressure relief valve seals the first channel 131 in the housing 10.

[0056] As Figure 8As shown, during engine operation and refueling, the vehicle ECU supplies power to the coil assembly 20 through a connector. Under the action of the electromagnetic force of the coil assembly 20, the armature assembly 30 moves upward, the second channel 132 on the housing 10 opens, and at the same time, the guiding portion 315 at the bottom of the armature 31 disengages from the guiding hole, and the annular sealing plane disengages from the rubber on the upper surface of the pressure relief valve assembly 40, and the auxiliary pressure relief hole also opens, enabling the pressure inside the fuel tank to be quickly released.

[0057] As Figure 9 As shown, the pressure relief working condition of the pressure relief valve assembly 40 under high pressure conditions inside the fuel tank is when the vehicle is parked for a long time or under high and low temperature conditions in extreme weather. The gasoline in the fuel tank continuously volatilizes under external conditions such as temperature, causing the pressure inside the fuel tank to rise. When the pressure rises to a certain limit value, under the action of gas pressure, the pressure relief valve assembly 40 overcomes the elastic force of the second spring 42 and opens to complete pressure relief. When the pressure relief valve assembly 40 opens under the fuel tank pressure condition, the first channel 131 in the center does not open, and the rubber part on the upper surface of the mechanical pressure relief valve always fits with the sealing surface on the lower surface of the armature 31.

[0058] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0059] 1. Effectively solve the technical problems existing in the prior art, such as the large volume of the fuel tank isolation valve, the cumbersome manufacturing process, the small cross-sectional area of the pressure relief channel, and the inability to meet the requirements for the pressure relief speed under different working conditions;

[0060] 2. The structure is simple, the installation is convenient, and the manufacturing cost is low.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0062] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0064] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle high-pressure fuel tank isolation valve, characterized in that, It includes a housing (10), a coil assembly (20), an armature assembly (30) and a pressure relief valve assembly (40). Among them, a first accommodation cavity (11) and a second accommodation cavity (12) are formed in the housing (10). The first accommodation cavity (11) is located above the second accommodation cavity (12). The first accommodation cavity (11) and the second accommodation cavity (12) are separated by a partition plate (13). A first opening for communicating with a first pipeline is provided on the first accommodation cavity (11), and a second opening for communicating with a second pipeline is provided on the second accommodation cavity (12). A first channel (131) is provided at the central position on the partition plate (13), and a second channel (132) is provided around the first channel (131). The coil assembly (20) and the armature assembly (30) are located in the first accommodation cavity (11). At least a part of the armature assembly (30) elastically presses against the partition plate (13) to seal the second channel (132); the pressure relief valve assembly (40) is located in the second accommodation cavity (12). At least a part of the pressure relief valve elastically abuts against the partition plate (13). At least a part of the armature assembly (30) can abut against at least a part of the pressure relief valve assembly (40) to seal the first channel (131). The armature assembly (30) can reciprocate in the housing (10) under the drive of the coil assembly (20), so as to control the gas communication between the first accommodation cavity (11) and the second accommodation cavity (12).

2. The vehicle high-pressure fuel tank isolation valve according to claim 1, wherein The armature assembly (30) includes: an armature (31); a first sealing valve (32), the first sealing valve (32) is detachably connected to the armature (31); a first spring (33), one end of the first spring (33) abuts against the coil assembly (20), and the other end of the first spring (33) abuts against the first sealing valve (32), so as to press the first sealing valve (32) against the partition plate (13).

3. The vehicle high-pressure fuel tank isolation valve according to claim 2, characterized in that, The lower part of the armature (31) has a stepped first section (311), a second section (312) and a third section (313), where the diameters of the first section (311), the second section (312) and the third section (313) decrease in sequence. A ring-shaped boss (314) is formed between the second section (312) and the third section (313); the first sealing valve (32) is in a cylindrical shape with one end open. The armature (31) is partially accommodated inside the cylindrical shape. A clamping portion (321) is provided on the inner wall of the cylindrical shape. The ring-shaped boss (314) can be detachably matched with the clamping portion (321).

4. The vehicle high-pressure fuel tank isolation valve according to claim 2, wherein, A guiding portion (315) is formed on the end face of the armature (31) close to the partition plate (13). During the reciprocating movement of the armature (31), the guiding portion (315) can pass through the first sealing valve (32) and the first channel (131) to abut against the pressure relief valve assembly (40).

5. The vehicle high-pressure fuel tank isolation valve according to claim 1, wherein The first channel (131) extends from the partition plate (13) towards the second accommodation cavity (12) and has a ring-shaped first support rib (133).

6. The vehicle high-pressure fuel tank isolation valve according to claim 1, wherein The second channel (132) extends from the partition plate (13) towards the second accommodation cavity (12) and has a second support rib (134).

7. The vehicle high-pressure fuel tank isolation valve according to claim 6, wherein There are a plurality of the second support ribs (134), and reinforcing ribs (135) are arranged on the second support ribs (134).

8. The vehicle high-pressure fuel tank isolation valve according to claim 4, characterized in that, The pressure relief valve assembly (40) includes: A second sealing valve (41), the second sealing valve (41) has a through-going guide hole, and the guide portion (315) is in sliding and sealing fit with the guide hole; A second spring (42), one end of the second spring (42) abuts against the housing (10), and the other end of the second spring (42) abuts against the second sealing valve (41).

9. The vehicle high-pressure fuel tank isolation valve according to claim 8, wherein, The housing (10) has a plurality of support ribs (14), the support ribs (14) extend outward from the inner surface of the second accommodation cavity (12), and one end of the second spring (42) abuts against the support ribs (14).

10. The vehicle high-pressure fuel tank isolation valve according to claim 1, wherein, One end of the first spring (33) abuts against the inner cavity of the bottom cylinder of the winding skeleton of the coil assembly (20), and / or, the outer cylindrical surface of the winding skeleton of the coil assembly (20) is a mating surface sealed with the housing (10).

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