CN112709856B

CN112709856B - Solenoid valve device, pressure vessel and vehicle

Info

Publication number: CN112709856B
Application number: CN201911022971.5A
Authority: CN
Inventors: 谭光辉; 刘仁豪
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2023-06-23
Anticipated expiration: 2039-10-25
Also published as: CN112709856A

Abstract

The invention discloses a solenoid valve device, a pressure vessel and a vehicle, the solenoid valve device comprises: the valve body is internally provided with a containing cavity, and is provided with an air inlet and an air outlet which are communicated with the containing cavity; an electromagnet assembly; the guide head is located between the electromagnet assembly and the air inlet, wherein the guide head is provided with an air inlet channel and an air outlet channel, the air inlet channel is used for communicating the air inlet with the accommodating cavity, the air outlet channel is used for communicating the air outlet with the accommodating cavity, the electromagnet assembly is movable between a plugging position and an avoidance position, the electromagnet assembly plugs the air outlet channel when in the plugging position, and the electromagnet assembly avoids the air outlet channel when in the avoidance position. The electromagnetic valve device of the embodiment of the invention utilizes the position change of the guide head to control the on-off of the air inlet and the air outlet, simplifies the structure of the electromagnetic valve device, reduces the volume and the weight of the electromagnetic valve device, reduces the power consumption of the electromagnetic valve device, and reduces the production cost and the use cost of the electromagnetic valve device.

Description

Solenoid valve device, pressure vessel and vehicle

Technical Field

The invention relates to the technical field of vehicle manufacturing, in particular to a solenoid valve device, a pressure container with the solenoid valve device and a vehicle with the pressure container.

Background

The fuel cell can directly convert chemical energy into electric energy, has the advantages of high energy conversion efficiency, small pollution, wide fuel source, low noise, high reliability, convenient maintenance and the like, and is a recognized efficient and clean power generation technology. Automobiles using hydrogen fuel cell technology are receiving increasing attention from all countries of the world because of the advantages described above.

The vehicle-mounted gaseous hydrogen storage is a mature and economical hydrogen storage mode at the present stage, in order to enable a vehicle to have longer endurance mileage, a gas cylinder needs to have larger gas storage capacity, and a 70MPa hydrogen storage cylinder is generally adopted internationally, so that higher requirements are put on a cylinder valve for controlling high-pressure gas to enter and exit.

In the vehicles in the related art, the electromagnetic valve for the hydrogen storage cylinder has larger volume and weight, and the electromagnetic valve has high power consumption and complex structure, thereby severely restricting the cost and the quality hydrogen storage rate of the vehicle-mounted hydrogen storage system.

Disclosure of Invention

In view of the above, the present invention aims to provide a solenoid valve device, so that the solenoid valve device has the advantages of small volume, light weight, convenient use and the like.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

a solenoid valve apparatus, the solenoid valve apparatus comprising: the valve body is internally provided with a containing cavity, and the valve body is provided with an air inlet and an air outlet which are communicated with the containing cavity; the electromagnet assembly is arranged in the accommodating cavity; the guide head is arranged in the accommodating cavity and is positioned between the electromagnet assembly and the air inlet, the guide head is provided with an air inlet channel and an air outlet channel, the air inlet channel is used for communicating the air inlet with the accommodating cavity, the air outlet channel is used for communicating the air outlet with the accommodating cavity, the electromagnet assembly is movable between a blocking position and an avoidance position, when the electromagnet assembly is in the blocking position, the electromagnet assembly blocks the air outlet channel so as to disconnect the air inlet from the air outlet, and when the electromagnet assembly is in the avoidance position, the electromagnet assembly avoids the air outlet channel so as to communicate the air inlet with the air outlet.

The electromagnetic valve device provided by the embodiment of the invention has the advantages of small volume, light weight, convenience in use and the like.

In addition, the solenoid valve device according to the above embodiment of the invention may have the following additional technical features:

according to some embodiments of the invention, the inlet channel is provided with an inlet throttle section and the outlet channel is provided with an outlet throttle section, the cross-sectional dimension of the inlet throttle section being smaller than the cross-sectional dimension of the outlet throttle section.

According to some embodiments of the invention, the air outlet throttling section is communicated with the end face of one side of the pilot head, which faces the electromagnet assembly, to form an air passing port, an annular bulge surrounding the air passing port is arranged at the air passing port, and the outer surface of the annular bulge is smoothly transited through a round angle.

According to some embodiments of the invention, the electromagnet assembly comprises: the coil is arranged in the accommodating cavity; the iron core is arranged in the coil, and the coil drives the iron core to move between the blocking position and the avoiding position; and the elastic piece is used for driving the iron core to move towards the blocking position.

According to some embodiments of the invention, an end face of the iron core, which faces the guide head, is provided with a protruding portion, and the protruding portion is adapted to block the air outlet channel.

According to some embodiments of the invention, the valve body comprises: a body on which the air inlet is formed; the valve port part is connected with the body to jointly define the accommodating cavity, the air outlet is formed on the valve port part, and the pilot head is respectively connected with the body and the valve port part to connect or disconnect the air inlet and the air outlet.

According to some embodiments of the invention, the pilot head is provided with a tapered boss, the valve port portion is provided with a tapered groove, and the tapered boss is adapted to fit in the tapered groove.

According to some embodiments of the invention, the solenoid valve device further comprises: the driving device is arranged in the accommodating cavity, the driving device constantly drives the pilot head to be in press fit with the valve port part, and the driving device comprises: the connecting part is movably arranged in the accommodating cavity and is connected with the pilot head; and the elastic part constantly drives the connecting part to move towards the direction close to the pilot head so as to enable the pilot head to be in press fit with the valve port part.

Compared with the prior art, the electromagnetic valve device provided by the invention has the following advantages:

the electromagnetic valve device provided by the invention has a simpler structure, can reduce the volume and weight of the electromagnetic valve device, reduce the power consumption of the electromagnetic valve device, and reduce the production cost and the use cost of the electromagnetic valve device.

Another object of the present invention is to propose a pressure vessel which has the advantages of small volume, light weight and low energy consumption.

a pressure vessel comprises the electromagnetic valve device. The pressure vessel has the same advantages as the above-mentioned solenoid valve device over the prior art and will not be described in detail here.

Another object of the present invention is to provide a vehicle, so that the vehicle has the advantages of low cost, high quality hydrogen storage rate, etc. of the vehicle-mounted hydrogen storage system.

a vehicle comprises the pressure container.

Compared with the prior art, the vehicle provided by the invention has the following advantages:

the vehicle provided by the invention has the advantages of low cost, higher mass hydrogen storage rate and the like of the vehicle-mounted hydrogen storage system by utilizing the pressure container according to the embodiment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a cross-sectional view of a solenoid valve apparatus according to an embodiment of the invention.

Fig. 2 is an enlarged view at D in fig. 1.

Fig. 3 is a cross-sectional view of a pilot head of a solenoid valve apparatus according to an embodiment of the invention.

Fig. 4 is an enlarged view at E in fig. 3.

Fig. 5 is an enlarged view at G in fig. 3.

Fig. 6 is an enlarged view at F in fig. 3.

Fig. 7 is a schematic structural view of a retainer ring of a solenoid valve device according to an embodiment of the invention.

Fig. 8 is a schematic structural view of a retainer ring of a solenoid valve device according to an embodiment of the invention.

Reference numerals: solenoid valve device 1, valve body 100, air inlet 102, air outlet 103, body 110, valve port 120, tapered groove 121, support frame 130, electromagnet assembly 200, coil 210, iron core 220, protrusion 221, elastic member 230, pilot head 300, air inlet channel 301, first air inlet section 3011, second air inlet section 3012, air inlet throttle section 303, air outlet channel 302, air outlet throttle section 304, air passing port 305, annular protrusion 310, tapered boss 320, driving device 400, connecting portion 410, extension 411, elastic portion 420, retainer ring 510, seal ring 520, and air source channel 2.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

The present invention will be described in detail below with reference to fig. 1 to 8 in conjunction with the embodiments.

Referring to fig. 1 to 8, a solenoid valve apparatus 1 according to an embodiment of the invention includes a valve body 100, a solenoid assembly 200, and a pilot head 300.

The valve body 100 is provided with a containing cavity, and the valve body 100 is provided with an air inlet 102 and an air outlet 103 which are communicated with the containing cavity. An electromagnet assembly 200 is disposed within the receiving chamber. The guide head 300 is arranged in the accommodating cavity, the guide head 300 is located between the electromagnet assembly 200 and the air inlet 102, the guide head 300 is provided with an air inlet channel 301 and an air outlet channel 302, the air inlet channel 301 is used for communicating the air inlet 102 with the accommodating cavity, the air outlet channel 302 is used for communicating the air outlet 103 with the accommodating cavity, the electromagnet assembly 200 is movable between a blocking position and an avoiding position, when the electromagnet assembly 200 is in the blocking position, the electromagnet assembly 200 blocks the air outlet channel 302 so as to disconnect the air inlet 102 from the air outlet 103, and when the electromagnet assembly 200 is in the avoiding position, the electromagnet assembly 200 avoids the air outlet channel 302 so as to communicate the air inlet 102 with the air outlet 103.

Specifically, the air inlet 102 communicates with the air source passage 2. An air storage space is defined between the electromagnet assembly 200 and the pilot head 300, and an air inlet channel 301 and an air outlet channel 302 are respectively communicated with the air storage space.

The operation of the solenoid valve device 1 according to the embodiment of the present invention is described below with reference to the drawings.

First, gas enters the valve body 100 through the gas inlet 102, and then the gas enters the gas storage space through the gas inlet passage 301 in the guide head 300. When the electromagnet assembly 200 is in the blocking position, the electromagnet assembly 200 blocks the air outlet channel 302, the air outlet channel 302 is disconnected with the air inlet channel 301, the pilot head 300 is tightly attached to the valve body 100, the air inlet 102 and the air outlet 103 are disconnected, the electromagnetic valve device 1 is in a closed state, and air cannot flow out of the air outlet 103. When the electromagnet assembly 200 is at the avoidance position, the electromagnet assembly 200 is avoided from the air outlet channel 302, the air outlet channel 302 is connected with the air inlet channel 301 through the air storage space, the pilot head 300 moves under the action of the air pressure, an air passing channel is formed between the pilot head 300 and the valve body 100, the air inlet 102 and the air outlet 103 are communicated through the air passing channel, the electromagnetic valve device 1 is in an open state, and the air can flow out from the air outlet 103.

According to the electromagnetic valve device 1 of the embodiment of the invention, the electromagnet assembly 200 and the pilot head 300 are arranged, so that the electromagnet assembly 200 is used for controlling the on-off of the air outlet channel 302 and the air inlet channel 301. And then the pilot head 300 is moved by utilizing the change of the gas pressure on the two sides of the pilot head 300, and the on-off of the air inlet 102 and the air outlet 103 is controlled by the position change of the pilot head 300. Compared with the mode of directly utilizing the electromagnetic valve to control the on-off of the air flow in the related art, the electromagnetic valve device 1 is convenient to simplify the structure of the electromagnetic valve device 1, the size and the weight of the electromagnetic valve device 1 are reduced, the power consumption of the electromagnetic valve device 1 is reduced, and the production cost and the use cost of the electromagnetic valve device 1 are reduced.

Thus, the electromagnetic valve device 1 can be applied to a small space inside a small passenger car, and the requirements of light weight and low power consumption in the fields of aerospace, military and the like are met. Meanwhile, the working reliability and stability of the electromagnetic valve device 1 are improved conveniently, the use of a user is facilitated, and the use experience of the user is improved.

Therefore, the solenoid valve device 1 according to the embodiment of the invention has the advantages of small volume, light weight, convenient use, and the like.

The solenoid valve device 1 according to a specific embodiment of the present invention is described below with reference to the drawings.

In some embodiments of the present invention, as shown in fig. 1 to 8, a solenoid valve apparatus 1 according to an embodiment of the present invention includes a valve body 100, a solenoid assembly 200, and a pilot head 300.

Specifically, as shown in fig. 4, the air inlet channel 301 is provided with an air inlet throttling section 303, the air outlet channel 302 is provided with an air outlet throttling section 304, and the cross-sectional dimension of the air inlet throttling section 303 is smaller than that of the air outlet throttling section 304. Thus, the speed of the air-supplementing of the air-storing space by the air-inlet channel 301 is lower than the speed of the air-discharging of the air-outlet channel 302, so that the air pressure in the air-storing space is lower than the air pressure around the pilot head 300 at the air inlet 102, and the pilot head 14 moves under the action of the pressure difference, thereby forming the air-passing channel communicating the air inlet 102 and the air outlet 103.

Of course, there is also a fit gap between the valve body 100 and the pilot head 300, the cross-sectional size of which is smaller than that of the air outlet throttle section 304, and the air intake amount of which is approximately negligible.

Alternatively, as shown in fig. 4, the intake passage 301 includes a first intake section 3011 and a second intake section 3012, and the intake throttle section 303 is located between the first intake section 3011 and the second intake section 3012.

More specifically, as shown in fig. 6, the air outlet throttling section 304 communicates with the end surface of the pilot head 300 facing the electromagnet assembly 200 to form an air passing port 305, an annular protrusion 310 surrounding the air passing port 305 is arranged at the air passing port 305, and the outer surface of the annular protrusion 310 is smoothly transited by a fillet. This facilitates the mating of the pilot 300 with the electromagnet assembly 200, and facilitates the electromagnet assembly 200 to block or clear the gas port 305. Meanwhile, the annular protrusion 310 is convenient for improving the close fit between the guide head 300 and the electromagnet assembly 200, improving the sealing effect of the electromagnet assembly 200 on the air port 305, and improving the working reliability and stability of the electromagnet assembly 200.

More specifically, the annular protrusion 310 is provided with a rounded corner, the radius r=0.05-0.5 mm.

In some embodiments of the present invention, as shown in fig. 2, the electromagnet assembly 200 includes a coil 210, a core 220, and an elastic member 230, and the coil 210 is disposed in the receiving chamber. The core 220 is disposed within the coil 210, and the coil 210 drives the core 220 between the blocking position and the retracted position. The spring 230 normally drives the plunger 220 to move toward the occluding position. Thus, the electromagnet assembly 200 is convenient to perform position conversion between the blocking position and the avoiding position, the electromagnet assembly 200 is convenient to be in a normally closed state, the risk of air leakage is avoided, and the use safety and reliability of the electromagnetic valve device 1 are improved.

It should be understood that "the elastic member 230 always drives the iron core 220 to move toward the blocking position" means that the iron core 220 is always subjected to the elastic force of the elastic member 230, and the elastic force can drive the iron core 220 to move toward the blocking position without any other external force, so that the iron core 220 is in the blocking position for a long time.

Specifically, as shown in fig. 2, a protruding portion 221 is provided on an end surface of the core 220 facing the guide head 300, and the protruding portion 221 is adapted to block the air outlet channel 302. Specifically, the protrusion 221 is adapted to press fit with the annular protrusion 310 at the gas port 305. This further facilitates improving the sealing effect of the core 220 against the air outlet channel 302.

In some embodiments of the present invention, as shown in FIG. 2, the valve body 100 includes a body 110 and a valve port portion 120, with the intake port 102 formed on the body 110. The valve port portion 120 is connected with the body 110 to define the accommodating chamber together, the air outlet 103 is formed on the valve port portion 120, and the pilot head 300 is connected with the body 110 and the valve port portion 120, respectively, to connect or disconnect the air inlet 102 and the air outlet 103. This facilitates not only the production and processing of the valve body 100, the assembly and molding of the solenoid valve device 1, but also the control of the connection or disconnection of the air inlet 102 and the air outlet 103 by the guide head 300.

Specifically, the pilot head 300 is respectively connected to the body 110 and the valve port 120, the pilot head 300 shields the air inlet 102 and the air outlet 103, the air inlet 102 is communicated with the air storage space through the air inlet channel 301, and the air outlet 103 is communicated with the air storage space through the air outlet channel 302.

Optionally, at least a portion of the air outlet 103 is a flared structure. This facilitates smooth evacuation of the gas.

Optionally, as shown in fig. 2, the valve body 100 further includes a support 130, and the body 110 and the support 130 define a mounting groove in which the coil 210 is mounted.

Specifically, as shown in fig. 2, the pilot head 300 is provided with a tapered boss 320, the valve port portion 120 is provided with a tapered groove 121, and the tapered boss 320 is adapted to fit in the tapered groove 121. This facilitates increasing the contact area between the pilot head 300 and the valve port portion 120, and improves the reliability and stability of the seal between the pilot head 300 and the valve port portion 120. At the same time, the stable circulation of the gas is facilitated, and the turbulence, noise and vibration of the pilot head 300 of the gas are prevented.

More specifically, the sealing chamfer of the conical boss 320 mating with the conical groove 121 is of non-planar configuration, provided with a rounded corner, the corner radius r=0.1-0.5 mm, with the angles of k and i generally being 2-5 °.

Optionally, as shown in fig. 2, the electromagnetic valve device 1 further includes a driving device 400, where the driving device 400 is disposed in the accommodating cavity, and the driving device 400 often drives the pilot head 300 to be in press fit with the valve port portion 120. Thus, the electromagnetic valve device 1 can be ensured to be in a normally closed state, the sealing reliability of the electromagnetic valve device 1 is improved, and the working reliability and stability of the electromagnetic valve device 1 are improved.

It should be understood herein that "the driving device 400 always drives the pilot head 300 to be in press fit with the valve port portion 120" means that the pilot head 300 is always acted upon by the driving force of the driving device 400, and the driving force can drive the pilot head 300 to press against the valve port portion 120 for a long time without any other external force.

In some embodiments of the present invention, as shown in fig. 2, the driving device 400 includes a connection part 410 and an elastic part 420, the connection part 410 is movably disposed in the receiving chamber, and the connection part 410 is connected with the guide head 300. The elastic portion 420 often drives the connecting portion 410 to move in a direction approaching the pilot head 300, so that the pilot head 300 is press-fitted with the valve port portion 120. Thus, the driving device 400 is convenient to be connected with the pilot head 300, the driving device 400 is convenient to transmit acting force to the pilot head 300, and the sealing reliability and stability between the pilot head 300 and the valve port part 120 are improved. Meanwhile, the driving device 400 is convenient to drive the guide head 300 to move together.

It should be understood that "the elastic portion 420 always drives the connection portion 410 to move in a direction approaching the pilot head 300" means that the connection portion 410 is always subjected to the elastic force of the elastic portion 420, and the elastic force can drive the connection portion 410 to move in a direction approaching the pilot head 300 without any other external force, so that the connection portion 410 can be pressed against the pilot head 300 for a long time to transmit the elastic force to the pilot head 300.

Specifically, the connection portion 410 includes an extension portion 411, and the extension portion 411 is fixedly connected to the guide head 300. The iron core 220 is movably provided between the connection portion 410 and the pilot head 300.

Specifically, the elastic member 230 is a first spring member provided inside the core 220, and the first spring member is connected to the core 220 and the driving device 400, respectively. The elastic part 420 is a second spring member provided inside the connection part 410, and the second spring member is connected to the connection part 410 and the valve body 100, respectively. The elastic coefficient of the second spring piece is larger than that of the first spring piece.

Alternatively, the pilot head 300 is made of PEEK (polyetheretherketone) material.

In some embodiments of the present invention, as shown in FIG. 2, a retainer ring 510 is provided between the valve body 100 and the pilot head 300. This facilitates preventing gas from entering the receiving chamber from the gap between the valve body 100 and the pilot head 300. Further, the retainer ring 510 may be a PTFE (polytetrafluoroethylene) material.

In some embodiments of the present invention, the retainer ring 510 is made of an elongated substrate, and the retainer ring 510 has an interface structure, and the connection is a step interface. This facilitates increasing the resistance to gas flow through the interface.

In other embodiments of the present invention, the retainer ring 510 is formed by processing an elongated substrate, wherein the retainer ring 510 has an interface structure, one end of the substrate has a protruding portion, and the other end of the substrate has a groove portion, and the protruding portion is fitted in the groove portion. This also increases the resistance to gas flow through the interface.

Optionally, an outer shell is arranged on the outer side of the valve body 100, the air source channel 2 is arranged in the outer shell, and a sealing ring 520 is arranged between the valve body 100 and the outer shell.

According to some embodiments of the present invention, the following describes the operation of the solenoid valve device 1, when the solenoid valve device 1 is closed, the electromagnet assembly 200 is in the blocking position, and the high-pressure gas sequentially passes through the gas inlet 102 and the gas inlet channel 301 to enter the gas storage space. Since the gas pressure of the pilot head 300 on the gas outlet 103 side is lower than the gas pressure of the pilot head 300 on the gas inlet 102 side, the pilot head 300 is subjected to the pressure difference force on both sides and the spring force of the driving device 400, and the pilot head 300 is closely attached to the sealing tapered surface of the valve opening 120.

When the electromagnetic valve device 1 is opened, the coil 210 is electrified, the iron core 220 overcomes the elasticity of the elastic piece 230 and is separated from the gas passing port 305 on the pilot head 300 due to the electromagnetic force, the high-pressure gas in the gas storage space is rapidly discharged to the gas outlet 103 through the gas outlet channel 302, the gas supplementing speed of the gas storage space is smaller than the gas discharging speed due to the fact that the section size of the gas inlet throttling section 303 is smaller than the section size of the gas outlet throttling section 304, the gas pressure in the gas storage space is lower than the gas pressure of the gas inlet 102, and the pilot head 300 is completely opened due to the pressure difference of two sides and overcomes the acting force of the driving device 400.

When the electromagnetic valve device 1 needs to be closed, the coil 210 is powered off, the electromagnetic force disappears, the iron core 220 presses the air passing port 305 on the pilot head 300 under the action of the elastic force of the elastic member 230, the air storage space is supplemented by high-pressure air through the air inlet channel 301, and finally the air pressure in the air storage space is equal to the air pressure of the pilot head 300 at the air inlet 102 side, and the pilot head 300 is closed due to the action of the elastic force of the driving device 400.

According to another aspect of the present invention, a pressure vessel includes the solenoid valve device 1 of the above embodiment.

Optionally, the pressure vessel is a high pressure hydrogen cylinder.

According to the pressure vessel of the embodiment of the present invention, since the solenoid valve device 1 according to the above-described embodiment of the present invention has the above-described technical effects, the pressure vessel according to the embodiment of the present invention also has the corresponding technical effects, that is, the solenoid valve device 1 has the advantages of small volume, light weight, convenience in use, and the like.

According to another aspect of the invention, a vehicle includes the pressure vessel of the above embodiment.

According to the vehicle of the embodiment of the present invention, since the pressure vessel according to the above embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention also has the corresponding technical effects, namely, the solenoid valve device 1 has the advantages of small volume, light weight, convenient use, and the like. Therefore, the vehicle has the advantages of low cost, higher quality hydrogen storage rate and the like of the vehicle-mounted hydrogen storage system.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A solenoid valve device (1), characterized by comprising:

the valve comprises a valve body (100), wherein a containing cavity is arranged in the valve body (100), and an air inlet (102) and an air outlet (103) which are communicated with the containing cavity are arranged on the valve body (100); the valve body (100) includes: -a body (110), the air inlet (102) being formed on the body (110); a valve port portion (120), the valve port portion (120) being connected to the body (110) to collectively define the accommodation chamber, the air outlet (103) being formed on the valve port portion (120); an electromagnet assembly (200), the electromagnet assembly (200) being disposed within the receiving cavity;

the guide head (300) is arranged in the accommodating cavity, the guide head (300) is positioned between the electromagnet assembly (200) and the air inlet (102), and the guide head (300) is respectively connected with the body (110) and the valve port part (120) so as to connect or disconnect the air inlet (102) and the air outlet (103); the pilot head (300) is provided with a conical boss (320), the valve port part (120) is provided with a conical groove (121), and the conical boss (320) is suitable for being matched in the conical groove (121); the sealing inclined surface of the conical boss (320) matched with the conical groove (121) is of a non-planar structure, the sealing inclined surface is provided with a rounding angle, the radius R of the rounding angle is 0.1-0.5 mm, and the angles k and i are 2-5 degrees;

a gas storage space is defined between the electromagnet assembly (200) and the pilot head (300);

the guide head (300) is provided with an air inlet channel (301) and an air outlet channel (302), the air inlet channel (301) is used for communicating the air inlet (102) and the accommodating cavity, the air outlet channel (302) is used for communicating the air outlet (103) and the accommodating cavity, the electromagnet assembly (200) is movable between a blocking position and a avoiding position, when the electromagnet assembly (200) is in the blocking position, the electromagnet assembly (200) blocks the air outlet channel (302) so as to disconnect the air inlet (102) from the air outlet (103), and when the electromagnet assembly (200) is in the avoiding position, the electromagnet assembly (200) avoids the air outlet channel (302) so as to communicate the air inlet (102) with the air outlet (103);

the air inlet channel (301) is provided with an air inlet throttling section (303), the air outlet channel (302) is provided with an air outlet throttling section (304), and the cross section size of the air inlet throttling section (303) is smaller than that of the air outlet throttling section (304); the air inlet channel (301) comprises a first air inlet section (3011) and a second air inlet section (3012), the air inlet throttling section (303) is located between the first air inlet section (3011) and the second air inlet section (3012), the first air inlet section (3011) is communicated with the air inlet (102), and the second air inlet section (3012) is communicated with the accommodating cavity.

2. The solenoid valve device (1) according to claim 1, characterized in that the air outlet restriction (304) communicates with a side end surface of the pilot head (300) facing the electromagnet assembly (200) to form an air passing port (305), an annular protrusion (310) surrounding the air passing port (305) is provided at the air passing port (305), and an outer surface of the annular protrusion (310) is smoothly transited by a rounded corner.

3. The solenoid valve device (1) according to claim 1, characterized in that said electromagnet assembly (200) comprises:

a coil (210), the coil (210) being disposed within the receiving cavity;

an iron core (220), wherein the iron core (220) is arranged in the coil (210), and the coil (210) drives the iron core (220) to move between the blocking position and the avoiding position;

and the elastic piece (230) is used for normally driving the iron core (220) to move towards the blocking position.

4. A solenoid valve device (1) according to claim 3, characterized in that a side end face of the iron core (220) facing the pilot head (300) is provided with a protrusion (221), the protrusion (221) being adapted to block the outlet channel (302).

5. The solenoid valve device (1) according to claim 1, characterized by further comprising:

the driving device (400), the driving device (400) is arranged in the accommodating cavity, the driving device (400) drives the pilot head (300) and the valve port part (120) to be in press fit, and the driving device (400) comprises:

a connecting portion (410), wherein the connecting portion (410) is movably arranged in the accommodating cavity, and the connecting portion (410) is connected with the pilot head (300);

and an elastic part (420), wherein the elastic part (420) always drives the connecting part (410) to move towards the direction approaching the pilot head (300) so as to enable the pilot head (300) to be in press fit with the valve port part (120).

6. Pressure vessel, characterized by comprising a solenoid valve device (1) according to any of claims 1-5.

7. A vehicle comprising a pressure vessel according to claim 6.