Novel structure fuel tank for plug-in hybrid electric vehicle

Abstract

The utility model discloses a novel structure fuel tank for a plug-in hybrid electric vehicle, which comprises a fuel tank body, four mutually independent fuel cavities are arranged in the fuel tank body, a fuel through valve is fixedly connected on the fuel tank body between two diagonally arranged fuel cavities, and the fuel through valve can enable the two diagonally arranged fuel cavities to be communicated. The upper side of the fuel tank body is fixedly connected with a sealing tank cover, the sealing tank cover is connected with four oil-gas conveying pipelines, the lower ends of the four oil-gas conveying pipelines are respectively communicated with the four oil cavities one by one, and the oil-gas conveying pipeline above the sealing tank cover is connected with a first gas control one-way valve; through the structural design of the fuel tank body with the four independent oil cavities and the combined arrangement of the fuel through valves, when the fuel tank body shakes to cause the change of oil pressure in the oil cavities, oil in the high-pressure oil cavity is introduced into the low-pressure oil cavity through the fuel through valves, the balance of the oil in the oil cavities is promoted, the shaking of the oil is reduced, and the fuel tank is simple in structure and convenient to use. The realization is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid electric vehicles, in particular to a novel structural fuel tank for a plug-in hybrid electric vehicle. Background Art

[0002] The existing fuel tank structural design for oil sloshing and oil and gas recovery usually includes multiple components, aiming to improve fuel storage efficiency and reduce oil and gas emissions. The fuel tank usually includes the design of the fuel tank itself, such as using wave-breaking plates, partitions or special-shaped tanks to reduce oil sloshing during driving; it may also include oil sloshing sensors and active control systems, and a structure to reduce fuel tank sloshing is set inside the fuel tank. When the fuel tank sloshes, the active control system adjusts the vehicle posture or controls the structural movement inside the fuel tank to reduce sloshing. Its structure is complex, costly, and the overall weight of the fuel tank is large. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems and / or the problems existing in the fuel tank in the prior art, the present utility model is proposed.

[0005] The technical problem solved by the utility model is that the fuel tank has a complex structure and a large weight.

[0006] Therefore, the purpose of the utility model is to provide a new structural fuel tank for a plug-in hybrid electric vehicle. Through the structural design of the fuel tank body with four independent oil chambers and the joint arrangement of the fuel through valve, when the fuel tank body shakes and causes the oil pressure in the oil chamber to change, the oil in the high-pressure oil chamber passes through the fuel through valve into the low-pressure oil chamber, thereby promoting the balance of oil in each oil chamber and reducing oil shaking. The utility model has a simple structure and is easy to implement.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a new structural fuel tank for a plug-in hybrid electric vehicle, comprising a fuel tank body, wherein the fuel tank body has four independent oil chambers, a fuel through valve is fixedly connected to the fuel tank body between two diagonally arranged oil chambers, and the fuel through valve can connect the two diagonally arranged oil chambers, a sealed tank cover is fixedly connected to the upper side of the fuel tank body, four oil and gas delivery pipelines are connected to the sealed tank cover, the lower ends of the four oil and gas delivery pipelines are respectively connected to the four oil chambers one by one, and a first gas control one-way valve is connected to the oil and gas delivery pipeline above the sealed tank cover.

[0008] As a preferred solution for a new structural fuel tank for plug-in hybrid electric vehicles in the utility model, wherein: the fuel valve includes a first valve body fixedly connected to the fuel tank body, two electromagnetic flow-slowing grids spaced apart in the axial direction are connected inside the first valve body, the opposite ends of the two electromagnetic flow-slowing grids are respectively connected to first springs, the two first springs are respectively fixedly connected to a spherical electromagnetic oil-passing valve core at one end away from the corresponding electromagnetic flow-slowing grid, an oil sealing hole that just accommodates the moving sphere is opened in the center of the first valve body, oil holes with a diameter larger than the oil sealing hole are opened in the first valve body on both axial sides of the oil sealing hole, the outer edge of the electromagnetic oil-passing valve core is always in contact with the inner wall of the first valve body outside the oil sealing hole, and when the oil pressure outside the two electromagnetic flow-slowing grids is balanced, the electromagnetic oil-passing valve core is just in the oil sealing hole.

[0009] As a preferred solution of the new structural fuel tank for plug-in hybrid electric vehicles in the utility model, the four oil and gas delivery pipelines are connected together at one end away from the sealed box cover through a six-way pipe, the upper end of the six-way pipe is connected to the gas storage bottle through a merging pipe, and a second gas control one-way valve is connected to the merging pipe.

[0010] As a preferred solution of the new structural fuel tank for plug-in hybrid electric vehicles in the utility model, wherein: the first gas control valve and the second gas control valve have the same structure, the first gas control valve includes a second valve body, and the two ends of the second valve body in the axial direction are respectively provided with an air inlet and an air outlet, the air inlet in the first gas control valve is arranged away from the six-way pipe, the air outlet in the first gas control valve is communicated with the six-way pipe, a gas permeable film is fixedly connected to the second valve body, an electromagnetic valve core column is slidably connected to the second valve body, a spherical ventilation valve core is connected to the side of the electromagnetic valve core column opposite to the gas permeable film, an electromagnetic fixing seat is fixedly connected to the second valve body at the air outlet, a second spring is connected between the electromagnetic fixing seat and the electromagnetic valve core column, a tapered hole is provided in the second valve body close to the gas permeable film, the outer edge of the ventilation valve core can be tightly fitted on the inner wall of the second valve body outside the tapered hole, the air inlet is arranged away from the six-way pipe, and the air outlet is arranged relative to the six-way pipe.

[0011] As a preferred solution of the new structural fuel tank for plug-in hybrid electric vehicles in the utility model, a plurality of upper electromagnetic shock absorbing seats are arranged on the lower side of the fuel tank body, a shock absorbing spring is fixedly connected to the lower end of the upper electromagnetic shock absorbing seat, and a lower electromagnetic shock absorbing seat is fixedly connected to the lower end of the shock absorbing spring.

[0012] As a preferred solution of the novel structural fuel tank for plug-in hybrid electric vehicles in the utility model, four upper electromagnetic vibration damping seats arranged in a rectangular shape and corresponding to the four oil chambers are arranged on the lower side of the fuel tank body.

[0013] Compared with the prior art, the utility model has the following technical effects: when the fuel tank body shakes so that the oil pressure in the two diagonal oil chambers is unbalanced, the fuel in the oil chamber with high oil pressure flows to the oil chamber with low oil pressure through the controllable opening and closing of the fuel through valve, so as to achieve oil balance; the pressure sensor in the oil chamber detects the pressure difference in real time. When the diagonal oil volume is unequal, if the oil pressure difference on both sides is too large, the end with high oil pressure will push the electromagnetic oil through valve core to move, and the electromagnetic oil through valve core will move toward the end where the oil chamber with low oil pressure is located, and the fuel in the oil chamber with large oil volume will enter the oil chamber with small oil volume through the fuel through valve. If the oil pressure difference is greater than the set threshold value but cannot overcome the action force of the first spring, the electromagnet in the slow-flow mesh grid close to the oil chamber with large oil volume will be energized, so that The electromagnetic oil valve core and the slow-flow grid repel each other, the fuel valve opens, and the fuel in the oil chamber with more oil enters the oil chamber with less oil until the oil pressure difference is no more than the set threshold range, so that the oil in each oil chamber reaches balance; when the gas control one-way valve needs to be opened, the electromagnet in the electromagnetic fixing seat is energized, so that the electromagnet and the electromagnetic valve core column attract each other, the ventilation valve core moves toward the direction of the air outlet, the gas control one-way valve opens, and the oil is blocked by the gas permeable film, and the oil and gas enter the gas storage bottle through the gas permeable film to achieve oil and gas storage; when the vehicle vibrates greatly, the corresponding electromagnets in the lower electromagnetic shock absorber seat and the upper electromagnetic shock absorber seat are controlled to be energized, so that the shock absorber spring is slowly compressed or slowly rebounded, thereby reducing the shaking of the fuel tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 It is a top view of the utility model.

[0017] Figure 3 It is a cross-sectional view of the upper fuel through valve of the utility model, viewed downward.

[0018] Figure 4 It is a three-dimensional structural diagram of the fuel valve.

[0019] Figure 5 This is a diagram of the internal structure of the fuel valve.

[0020] Figure 6This is a structural diagram of the gas control one-way valve (when the second valve body is in a transparent state) in the utility model.

[0021] In the figure, 1 is the second oil inlet check valve, 2 is the first oil inlet check valve, 3 is the oil inlet pipe, 4 is the lower electromagnetic damping seat, 5 is the damping spring, 6 is the upper electromagnetic damping seat, 7 is the fuel tank body, 7 is the oil chamber, 8 is the exhaust pipe, 9 is the oil and gas delivery pipeline, 10 is the first gas control check valve, 1001 is the ventilation valve core, 1002 is the electromagnetic valve core column, 1002a is the first electromagnetic valve core body, 1002b is the first electromagnet, 1002c is the second electromagnetic valve core body, 1003 is the electromagnetic fixing seat, 1003a is the first electromagnetic fixing part, 1003b is the second electromagnet, 100 3c second electromagnetic fixing part, 1003d air outlet, 1004 second spring, 1005 second valve body, 1005a air outlet, 1005b air inlet, 1005c tapered hole, 1006 gas permeation film, 11 converging pipeline, 12 gas storage bottle, 13 second gas control one-way valve, 14 six-way pipe, 15 sealed box cover, 16 converging oil pipe, 17 fuel oil pipe, 18 fuel oil valve, 1801 first valve body, 1802 slow flow grid, 1803 electromagnetic oil valve core, 1804 third electromagnet, 1805 first spring. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figure 1 to Figure 3 This embodiment provides a new structure fuel tank for a plug-in hybrid electric vehicle, which can maintain the balance of oil in the fuel tank body 7.

[0027] A new type of fuel tank for a plug-in hybrid electric vehicle includes a fuel tank body 7, wherein the fuel tank body 7 has four independent oil chambers 701, a fuel passage 17 is fixedly connected to the fuel tank body 7 between two diagonally arranged oil chambers 701, a fuel passage valve 18 is connected to the fuel passage 17, and the fuel passage valve 18 can make the two diagonally arranged oil chambers 701 communicate with each other, a sealed tank cover 15 is fixedly connected to the upper side of the fuel tank body 7, and four oil and gas delivery pipelines 9 are connected to the sealed tank cover 15, and the lower ends of the four oil and gas delivery pipelines 9 are respectively connected to the four oil chambers 701 one by one, and the oil and gas delivery pipelines 9 above the sealed tank cover 15 are connected to the four oil chambers 701. A first gas control non-return valve 10 is connected to the top, and one end of the four oil and gas delivery pipes 9 away from the sealed box cover 15 is connected together through a six-way pipe 14. The upper end of the six-way pipe 14 is connected to the gas storage bottle 12 through a merging pipe 11, and the merging pipe 11 is connected to the second gas control non-return valve 13. Four oil inlet pipes 3 corresponding to the four oil chambers 701 are arranged at the lower end of the fuel tank body 7. The inner cavities of the four oil inlet pipes 3 are respectively connected to the corresponding oil chambers 701, and the end of the oil inlet pipe 3 away from the fuel tank body 7 is connected to the merging oil pipe 16. The merging oil pipe 16 is connected to the first oil inlet non-return valve 2, and each oil inlet pipe 3 is respectively connected to the second oil inlet non-return valve 1.

[0028] Each oil chamber 701 of the fuel tank body 7 is provided with a pressure sensor for detecting the oil pressure and a liquid level sensor for detecting the liquid level. When the fuel tank body 7 needs to be refueled, the first oil inlet check valve 2 and the second oil inlet check valve 1 are controlled to open, and the fuel in the external oil storage bottle is diverted to each oil inlet pipe 3 through the first oil inlet check valve 2, and the fuel in each oil inlet pipe 3 enters the corresponding oil chamber 701 through the second oil inlet check valve 1. When the fuel tank body 7 shakes, the oil pressure in the two diagonal oil chambers 701 is unbalanced. When the fuel tank 701 is in the state of being in a ...

[0029] Example 2

[0030] Reference Figure 4 and Figure 5 This embodiment provides a new structure fuel tank for a plug-in hybrid electric vehicle. This embodiment is based on Embodiment 1 and can further realize active opening and active closing of the fuel valve 18.

[0031] Specifically, the fuel valve 18 includes a first valve body 1801 fixedly connected to the fuel tank body 7, and two electromagnetic slow-flow grids 1802 spaced apart in the axial direction are connected inside the first valve body 1801, and the opposite ends of the two electromagnetic slow-flow grids 1802 are respectively connected to first springs 1805, and the two first springs 1805 are respectively fixedly connected to a spherical electromagnetic oil-passing valve core 1803 at one end away from the corresponding electromagnetic slow-flow grids 1802. An oil sealing hole that just accommodates the moving sphere is opened in the center of the first valve body 1801, and oil holes with a diameter larger than the oil sealing hole are opened in the first valve body 1801 on both sides of the oil sealing hole in the axial direction. The outer edge of the electromagnetic oil-passing valve core 1803 is always in contact with the inner wall of the first valve body 1801 outside the oil sealing hole. When the oil pressure outside the two electromagnetic slow-flow grids 1802 is balanced, the electromagnetic oil-passing valve core 1803 is just in the oil sealing hole.

[0032] When the electromagnetic oil-passing valve core 1803 is in the neutral position, the fuel-passing valve 18 is normally closed; the pressure sensor in the oil chamber 701 detects the pressure difference in real time. When the diagonal oil volumes are unequal, if the oil pressure difference on both sides is too large, the oil in the oil chamber 701 with large oil pressure enters the corresponding end of the first valve body 1801, and the oil entering the first valve body 1801 first passes through the decompression of the slow-flow grid 1802. The decompressed oil pushes the electromagnetic oil-passing valve core 1803 to move, and the electromagnetic oil-passing valve core 1803 moves toward the end of the oil chamber 701 with small oil pressure, and the fuel in the oil chamber 701 with large oil volume passes through the fuel passage When the valve 18 enters the oil chamber 701 with a small amount of oil, if the oil pressure difference is greater than the set threshold value but cannot overcome the force of the first spring 1805, the third electromagnet 1804 in the slow-flow grid 1802 close to the oil chamber 701 with a large amount of oil is energized, causing the electromagnetic oil valve core 1803 and the slow-flow grid 1802 to repel each other, and the fuel valve 18 opens. The fuel in the oil chamber 701 with a large amount of oil enters the oil chamber 701 with a small amount of oil until the oil pressure difference is no greater than the set threshold range, so that the oil in each oil chamber 701 reaches a balance, further realizing the controllable switching of the fuel valve 18.

[0033] Example 3

[0034] Reference Figure 6 This embodiment provides a new structure fuel tank for a plug-in hybrid electric vehicle. The difference between this embodiment and embodiment 1 and embodiment 2 is that this embodiment can further realize the collection of oil and gas.

[0035] Specifically, the first gas control valve and the second gas control valve have the same structure. The first gas control valve includes a second valve body 1005. The two ends of the second valve body 1005 in the axial direction are respectively provided with an inlet 1005b and an outlet 1005a. The inlet 1005b in the first gas control valve is arranged away from the six-way pipe 14. The outlet 1005a in the first gas control valve is connected to the six-way pipe 14. A gas permeable film 1006 is fixedly connected in the second valve body 1005. A solenoid valve core column 1005 is slidably connected in the second valve body 1005. 002, the solenoid valve core column 1002 includes a first solenoid valve core body 1002a, and a spherical ventilation valve core 1001 is connected to the side of the first solenoid valve core body 1002a opposite to the gas permeable film 1006, and a second solenoid valve core body 1022c having a first mounting recess is fixedly connected to the end of the first solenoid valve core column 1002 away from the ventilation valve core 1001, and the mounting recess is arranged relative to the first solenoid valve core body 1002a, and the first electromagnet 100 is installed in the first mounting recess of the second solenoid valve core body 1022c 2b, an electromagnetic fixing seat 1003 is fixedly connected in the second valve body 1005 at the air outlet 1005a, and the electromagnetic fixing seat 1003 includes a first electromagnetic fixing part 1003a, and a second spring 1004 is connected between the first electromagnetic fixing part 1003a and the second electromagnetic valve core body 1022c, and an end of the first electromagnetic fixing part 1003a away from the second spring 1004 is fixedly connected to a second electromagnetic fixing part 1003c having an annular second mounting groove, and the second mounting groove is arranged relative to the first electromagnetic fixing part 1003a, and the second An annular second electromagnet 1003b is installed in the second installation groove of the electromagnetic fixing part 1003c, and an air outlet hole 1003d connected to the air outlet 1005a is opened on the second electromagnetic fixing part 1003c. A conical hole 1005c is provided in the second valve body 1005 close to the gas permeable membrane 1006, and the outer edge of the ventilation valve core 1001 can fit tightly on the inner wall of the second valve body 1005 outside the conical hole 1005c. The air inlet 1005b is arranged away from the six-way pipe 14, and the air outlet 1005a is arranged relative to the six-way pipe 14.

[0036] When the gas control one-way valve needs to be opened, the first electromagnet 1002b in the electromagnetic fixing seat 1003 and the second electromagnet 1003b in the electromagnetic valve core column 1002 are energized, so that the electromagnet and the electromagnetic valve core column 1002 attract each other, and the ventilation valve core 1001 moves toward the direction of the air outlet 1005a. The gas control one-way valve opens, and the oil is blocked by the gas permeable film 1006. The oil and gas enter the gas storage bottle 12 through the gas permeable film 1006 to achieve the storage of oil and gas.

[0037] One end of the six-way pipe 14 away from the gas cylinder 12 and each oil and gas delivery pipeline 9 is connected to an intake pipe, and an exhaust one-way valve is connected to the intake pipe. One end of the intake pipe away from the six-way pipe 14 is connected to the exhaust pipe 8 of the engine. When it is necessary to collect the oil and gas exhausted from the engine, the exhaust one-way valve and the second gas control valve are opened, and the oil and gas exhausted by the engine are discharged into the gas cylinder 12 through the exhaust one-way valve and the second gas control valve, thereby realizing the collection of the oil and gas exhausted by the engine.

[0038] Example 4

[0039] Reference Figure 1 This embodiment provides a new structure fuel tank for a plug-in hybrid electric vehicle. The difference between this embodiment and embodiments 1 to 3 is that it can further reduce the shaking of the fuel tank body 7 when the vehicle vibrates.

[0040] A plurality of upper electromagnetic shock-absorbing seats are arranged on the lower side of the fuel tank body 7. A shock-absorbing spring 5 is fixedly connected to the lower end of the upper electromagnetic shock-absorbing seat 6. A lower end of the shock-absorbing spring 5 is fixedly connected to the lower electromagnetic shock-absorbing seat 4. Four upper electromagnetic shock-absorbing seats 6 arranged in a rectangular shape and corresponding to the four oil chambers 701 are arranged on the lower side of the fuel tank body 7.

[0041] The lower electromagnetic shock absorber seat 4 is fixedly connected to the frame of the automobile. When the vehicle vibrates greatly, the electromagnets in the corresponding lower electromagnetic shock absorber seat and the upper electromagnetic shock absorber seat are energized to make the shock absorbing spring 5 slowly compress or slowly rebound, thereby reducing the shaking of the fuel tank body 7.

[0042] The structure of arranging electromagnets in each electromagnetic seat is prior art, and the electromagnets in each seat are not drawn in detail, but it does not affect the understanding of the technical solution by technicians in this field.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A new type of fuel tank structure for a plug-in hybrid electric vehicle, characterized in that: The invention comprises a fuel tank body (7), wherein the fuel tank body (7) has four mutually independent oil chambers (701), a fuel valve (18) is fixedly connected to the fuel tank body (7) between two diagonally arranged oil chambers (701), and the fuel valve (18) can make the two diagonally arranged oil chambers (701) communicate with each other, a sealed tank cover (15) is fixedly connected to the upper side of the fuel tank body (7), and the sealed tank cover (15) is connected to four oil and gas delivery pipelines (9), and the lower ends of the four oil and gas delivery pipelines (9) are respectively connected to the four oil chambers (701) one by one, and the oil and gas delivery pipeline (9) above the sealed tank cover (15) is connected to a first gas control non-return valve (10).

2. The novel structure fuel tank for plug-in hybrid electric vehicle according to claim 1, characterized in that: The fuel flow valve (18) comprises a first valve body (1801) fixedly connected to the fuel tank body (7), wherein the first valve body (1801) is connected to two electromagnetic slow-flow meshes (1802) spaced apart in the axial direction, wherein the two electromagnetic slow-flow meshes (1802) are respectively connected to first springs (1805) at one end thereof which is opposite to each other, and the two first springs (1805) are respectively fixedly connected to a spherical spring at one end thereof which is away from the corresponding electromagnetic slow-flow meshes (1802). The electromagnetic oil-passing valve core (1803) is shaped, and an oil sealing hole that just accommodates the movable ball is opened in the center of the first valve body (1801). Oil holes with a diameter larger than the oil sealing holes are opened in the first valve body (1801) on both sides of the axial direction of the oil sealing hole. The outer edge of the electromagnetic oil-passing valve core (1803) is always in contact with the inner wall of the first valve body (1801) outside the oil sealing hole. When the oil pressure outside the two electromagnetic slow-flow grids (1802) is balanced, the electromagnetic oil-passing valve core (1803) is just in the oil sealing hole.

3. The novel structure fuel tank for plug-in hybrid electric vehicle according to claim 1, characterized in that: The ends of the four oil and gas delivery pipelines (9) away from the sealed box cover (15) are connected together via a six-way pipe (14), and the upper ends of the six-way pipes (14) are connected to the gas storage cylinder (12) via a merging pipe (11), and the merging pipe (11) is connected to a second gas control one-way valve (13).

4. The novel structure fuel tank for plug-in hybrid electric vehicle as claimed in claim 3, characterized in that: The first gas-controlled one-way valve (10) and the second gas-controlled one-way valve (13) have the same structure. The first gas-controlled one-way valve (10) comprises a second valve body (1005). The second valve body (1005) is provided with an air inlet (1005b) and an air outlet (1005a) at two ends in the axial direction. A gas permeable film (1006) is fixedly connected in the second valve body (1005) close to the air inlet (1005b). An electromagnetic valve core column (1002) is slidably connected in the second valve body (1005). A spherical ventilation valve core is connected on the side of the electromagnetic valve core column (1002) opposite to the gas permeable film (1006). (1001), an electromagnetic fixing seat (1003) is fixedly connected inside the second valve body (1005) at the air outlet (1005a), a second spring (1004) is connected between the electromagnetic fixing seat (1003) and the electromagnetic valve core column (1002), a conical hole (1005c) is provided inside the second valve body (1005) close to the gas permeable membrane (1006), the outer edge of the vent valve core (1001) can be tightly fitted on the inner wall of the second valve body (1005) outside the conical hole (1005c), the air inlet (1005b) is arranged away from the six-way pipe (14), and the air outlet (1005a) is arranged relative to the six-way pipe (14).

5. The novel structure fuel tank for plug-in hybrid electric vehicle according to any one of claims 1 to 4, characterized in that: A plurality of upper electromagnetic vibration damping seats (6) are arranged on the lower side of the fuel tank body (7); a vibration damping spring (5) is fixedly connected to the lower end of the upper electromagnetic vibration damping seat (6); and a lower electromagnetic vibration damping seat (4) is fixedly connected to the lower end of the vibration damping spring (5).

6. The novel structure fuel tank for plug-in hybrid electric vehicle as claimed in claim 5, characterized in that: Four upper electromagnetic vibration damping seats (6) arranged in a rectangular shape and corresponding one to one with the four oil chambers (701) are arranged on the lower side of the fuel tank body (7).

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