Fuel tank assembly and vehicle

Abstract

The utility model provides a fuel tank assembly and a vehicle, and belongs to the technical field of vehicles, the fuel tank assembly comprises a fuel tank body, a fixed partition plate, a movable flashboard and an oil pump, a diversion slope is formed on the inner side of the bottom of the fuel tank body, so that the bottom of the fuel tank forms height difference; the fixed partition plate is fixed in the fuel tank body, and the interior of the fuel tank body is divided into a low-position oil cavity and a high-position oil cavity by means of the height difference of the tank bottom. The movable gate plate is movably connected to the fixed partition plate and opens or closes the communication opening in the fixed partition plate through the driving mechanism. The oil pump is installed in the low-position oil cavity. When a vehicle runs on a slope or an inclined road section, the communicating opening is closed or opened through the movable gate plate, it is guaranteed that fuel oil converges as much as possible and is stored in the low-position oil cavity, the utilization rate of the fuel oil can be increased, and the risk that an oil pump is damaged due to insufficient oil suction and oil shortage can be avoided; and fuel oil is separated in the small-space oil cavity, so that the concentration of oil steam can be reduced, and the risk of oil gas leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, concretely relates to a fuel tank assembly and vehicle with the variable volume fuel tank assembly. BACKGROUND

[0002] The volume of the conventional fuel tank is usually fixed, and the bottom surface of the fuel tank is flat, so that a large amount of oil on the bottom surface of the fuel tank cannot be effectively utilized. When the vehicle is running with less than half tank of oil or even less, the following problems may occur: (1) due to the driving angle of the vehicle on a climbing slope or an inclined road, the oil pump may not be supplied with enough oil, which may result in insufficient power of the vehicle and cause the vehicle to be stranded on the climbing slope, and the oil pump may be overheated and damaged; (2) the empty space in the fuel tank is increased, and the range of oil shaking is increased, which may result in that the mixture of air and oil vapor occupies more space in the fuel tank, and the temperature change in the fuel tank may cause the generation and accumulation of oil vapor. If the amount of oil is too small, the concentration of oil vapor may be high, and the load of the oil vapor recovery system provided in the vehicle is also increased, which may result in that the carbon canister is saturated, and the risk of oil vapor leakage; (3) at the same time, if the fuel tank is in a low oil state for a long time, and the oil cannot be effectively recycled, the gasoline may be aged for a long time in the bottom of the fuel tank, which may affect the utilization efficiency of the fuel. SUMMARY

[0003] The utility model embodiment provides a kind of fuel tank assembly and vehicle, it is aimed at avoiding the risk of driving caused by oil vapor leakage and oil pump insufficient supply when low oil by the volume change of fuel tank.

[0004] In one aspect, to achieve the above object, the utility model provides a kind of fuel tank assembly, comprising: fuel tank body, fixed baffle, movable shutter and oil pump, the inside of the tank bottom of fuel tank body is formed with flow guide slope, to make the tank bottom form height difference;Fixed baffle is fixed in the inside of the fuel tank body, and the inside of the fuel tank body is separated into low oil chamber and high oil chamber by the height difference of the tank bottom;The lowest position of the low oil chamber is lower than the lowest position of the high oil chamber;The fixed baffle is provided with the communication port for communicating the low oil chamber and high oil chamber;Movable shutter is movably connected on the fixed baffle, and the communication port is opened or closed by driving mechanism;Oil pump is installed in the low oil chamber.

[0005] With reference to the first aspect, in an implementable mode, the driving mechanism comprises a driving motor, a transmission gear and a transmission rack, the driving motor is installed outside the fuel tank body, the transmission gear is installed on the main shaft of the driving motor, the transmission rack is installed on the movable shutter, and the transmission gear is located inside the fuel tank body and is engaged with the transmission rack; the driving motor drives the movable shutter to reciprocate along the fixed partition plate through the rotation of the transmission gear, thereby opening or closing the communication port.

[0006] With reference to the first aspect, in an implementable mode, a stroke switch for limiting the opening degree of the movable shutter is arranged on the fixed partition plate.

[0007] With reference to the first aspect, in an implementable mode, an elastic member is further arranged between the fixed partition plate and the movable shutter, the elastic member is connected to one end of the movable shutter away from the stroke switch, and the extension direction of the elastic member is consistent with the sliding direction of the movable shutter.

[0008] With reference to the first aspect, in an implementable mode, a slide is arranged on the fixed partition plate, and the movable shutter is slidably connected with the slide.

[0009] With reference to the first aspect, in an implementable mode, the communication port is a rectangular hole, and the slide is symmetrically arranged on two opposite long sides or two opposite short sides of the rectangular hole.

[0010] With reference to the first aspect, in an implementable mode, a plurality of communication ports are arranged on the fixed partition plate, the plurality of communication ports are arranged at different heights, and the communication port at the lowest position is close to the bottom of the fuel tank body; the movable shutter comprises a connecting plate and branch plates corresponding to the plurality of communication ports.

[0011] With reference to the first aspect, in an implementable mode, the slide is a bent plate fixed on the fixed partition plate, and a sliding groove for the movable shutter to slide is formed between the bent plate and the fixed partition plate.

[0012] With reference to the first aspect, in an implementable mode, the bottom of the fuel tank body is an inverted trapezoidal shape with the upper bottom facing downward, the lower bottom of the bottom constitutes a bottom plane for installing the oil pump, and two waist portions of the bottom are symmetrically arranged on opposite sides of the bottom plane to form two flow guide inclined surfaces; the fixed partition plate is arranged at the junction of the bottom plane and the flow guide inclined surface.

[0013] The fuel tank assembly has the advantages that (1) the flow guide inclined surface formed in the inner side of the tank bottom of the fuel tank body forms a height difference in the tank bottom, the fuel tank body is separated into a low-position oil cavity and a high-position oil cavity by the height difference of the tank bottom with the help of the fixed partition plate, when the vehicle runs on a slope, the movable gate is closed or opened to communicate the communicating port, so that fuel is converged and stored in the low-position oil cavity as much as possible, the oil amount in the low-position oil cavity cannot be insufficient for the oil pump due to the slope or the road inclination, the volume of invalid fuel in the fuel tank is reduced, the climbing power of the vehicle and the utilization rate of fuel are improved; (2) the fuel tank body is separated into the low-position oil cavity and the high-position oil cavity with different height differences, the fuel tank body with a large overall cross-sectional area is separated into smaller cross-sectional areas, the cross-sectional areas of different oil cavities are reduced, the oil pump is installed in the low-position oil cavity, when the oil amount in the fuel tank is small, the fuel with the same volume is converged in the low-position oil cavity at the low position, the oil amount around the oil pump is ensured to have a certain depth under the condition of the reduced cross-sectional area, so that the cooling and temperature reduction effect of the oil pump is ensured even when the fuel is in a low oil amount state, the risk of damage of the oil pump due to the low oil amount overheating is avoided, the service life of the oil pump is improved, and the risk of vehicle running failure is reduced; (3) when the oil amount in the fuel tank is at a low position, the movable gate is used to close the communicating port and separate the fuel in different oil cavities, the activity space of the fuel is reduced, so that the range of fuel shaking is reduced, the concentration of oil vapor is reduced, the effectiveness of the oil gas recovery system is ensured, and the risk of oil gas leakage is avoided; and (4) since the oil liquid can flow between the high-position oil cavity and the low-position oil cavity, the risk of oil gas aging is avoided, and the utilization efficiency of fuel is improved.

[0014] In a second aspect, the utility model embodiment further provides a vehicle, including the fuel tank assembly.

[0015] The vehicle provided by the utility model embodiment adjusts the utilization rate of fuel under different conditions by opening or closing the movable gate, can improve the utilization rate of fuel, reduce the risk of oil gas leakage and oil pump overheating failure, and improve the running performance of the whole vehicle. ACCURACY OF DRAWINGS

[0016] Figure 1 It is a perspective structural schematic diagram of the fuel tank assembly provided by the utility model embodiment;

[0017] Figure 2 It is a top view structural schematic diagram of the fuel tank assembly provided by the utility model embodiment;

[0018] Figure 3 It is a sectional view structure along the line A-A; Figure 2

[0019] ​Figure 4 The internal explosion structure schematic view of the fuel tank assembly is provided for the embodiment of the utility model.

[0020] Figure 5 The plane structure schematic view of the fixed partition plate and the movable gate plate in the fuel tank assembly is provided for the embodiment of the utility model.

[0021] Figure 6 The three-dimensional structure schematic view of the fixed partition plate and the movable gate plate in the fuel tank assembly is provided for the embodiment of the utility model.

[0022] Mark explanation:

[0023] 1, fuel tank body; 11, high oil cavity; 12, low oil cavity; 13, flow guide slope; 2, oil pump; 3, controller; 4, drive motor; 5, fixed partition plate; 51, slide; 52, communication port; 6, movable gate plate; 7, transmission rack; 8, transmission gear; 9, travel switch; 10, elastic member. Specific implementation

[0024] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and obvious, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0025] Please see Figures 1 to 6 , now the fuel tank assembly provided by the utility model will be described. The fuel tank assembly comprises: a fuel tank body 1, a fixed partition plate 5, a movable gate plate 6 and an oil pump 2, a flow guide slope 13 is formed on the inner side of the tank bottom of the fuel tank body 1, so that the tank bottom forms a height difference; the fixed partition plate 5 is fixed in the interior of the fuel tank body 1, and separates the interior of the fuel tank body 1 into a low oil cavity 12 and a high oil cavity 11 by means of the height difference of the tank bottom; the lowest position of the low oil cavity 12 is lower than the lowest position of the high oil cavity 11; the fixed partition plate 5 is provided with a communication port 52 for communicating the low oil cavity 12 and the high oil cavity 11; the movable gate plate 6 is movably connected to the fixed partition plate 5, and opens or closes the communication port 52 through a drive mechanism; the oil pump 2 is installed in the low oil cavity 12.

[0026] The fuel tank assembly has the advantages that: (1) compared with the fuel tank with a flat bottom, the fuel tank body 1 is separated into a low oil cavity 12 and a high oil cavity 11 by the fixed partition plate 5 and the height difference of the tank bottom, when the vehicle runs on a slope, the movable gate 6 is closed or opened to communicate the oil cavities, so that the fuel is converged and stored in the low oil cavity 12 as much as possible, the oil amount in the low oil cavity 12 is not insufficient for the oil pump 2 due to the slope, the volume of invalid fuel in the fuel tank is reduced, and the climbing power of the vehicle and the fuel utilization rate are improved.

[0027] For example, if the fuel tank is separated into the low oil cavity 12 and the high oil cavity 11 by the fixed partition plate 5 along the front-rear direction of the vehicle, and the low oil cavity 12 is located in front of the high oil cavity 11, when the vehicle climbs, the fuel in the low oil cavity 12 may flow into the high oil cavity 11 which is at a low position, at this time, the movable gate 6 needs to be closed to isolate the communication port 52 of the two oil cavities, so as to ensure that the oil amount in the low oil cavity 12 is supplied to the oil pump 2; conversely, when the vehicle descends, the high oil cavity 11 is at a higher position of the low oil cavity 12, at this time, the communication port 52 can be opened, so that the fuel in the high oil cavity 11 is converged and flows into the low oil cavity 12 as much as possible, and the oil amount of the oil pump 2 in the low oil cavity 12 is ensured.

[0028] If the low oil cavity 12 is located behind the high oil cavity 11, the communication port 52 is opened when the vehicle climbs, and the communication port 52 is closed when the vehicle descends.

[0029] The fixed partition plate 5 can also separate the fuel tank into the low oil cavity 12 and the high oil cavity 11 which are distributed left and right, and this case is suitable for the vehicle running on an inclined road.

[0030] (2) compared with the case that the fuel in the fuel tank is in a low oil amount, because the surface area of the fuel is large, the depth of the fuel with the same volume is shallow, and the oil pump 2 cannot be cooled, the fuel tank body 1 is separated into the low oil cavity 12 and the high oil cavity 11 with different height differences, the fuel tank with a large cross-sectional area is separated into small oil cavities with smaller cross-sectional areas, the cross-sectional areas of different oil cavities are reduced, when the oil amount in the fuel tank is small, the fuel with the same volume is collected in the low oil cavity 12 at a low position, the oil amount around the oil pump 2 has a certain depth under the condition that the cross-sectional area is reduced, so that the cooling effect of the oil pump 2 is ensured even when the fuel is in a low oil amount, the risk that the oil pump 2 is damaged due to low oil amount and overheating is avoided, the service life of the oil pump 2 is improved, and the risk of vehicle running failure is reduced.

[0031] (3) Compared with the large space inside the fuel tank that is not divided, when the fuel level in the fuel tank is half full or less, the range of fuel sloshing increases and the concentration of fuel vapor is high. In this application, when the fuel level in the fuel tank is low, the connecting port 52 is closed by the movable gate 6, which divides the fuel into different fuel chambers. This divides the originally large fuel chamber into smaller fuel chambers, thereby reducing the range of fuel sloshing, reducing the concentration of fuel vapor, ensuring the effectiveness of the fuel vapor recovery system, and avoiding the risk of fuel vapor leakage.

[0032] (4) Since the oil can flow between the high-level oil chamber and the low-level oil chamber, the risk of oil and gas aging can be avoided, and the utilization efficiency of fuel can be improved.

[0033] In some embodiments, see Figures 1 to 6 The drive mechanism includes a drive motor 4, a transmission gear 8, and a transmission rack 7. The drive motor 4 is mounted on the outside of the fuel tank body 1, the transmission gear 8 is mounted on the main shaft of the drive motor 4, and the transmission rack 7 is mounted on the movable gate 6. The transmission gear 8 is located inside the fuel tank body 1 and meshes with the transmission rack 7. The drive motor 4 drives the movable gate 6 to slide back and forth along the fixed partition 5 through the rotation of the transmission gear 8, opening or closing the communication port 52. In this embodiment, the movable gate 6 is driven to open or close the communication port 52 through the transmission of the gear and rack.

[0034] In the above embodiments, the installation position of the drive motor 4 can be divided into two types. The first installation method is that the drive motor 4 can be installed on the top of the fuel tank body 1 (e.g., Figures 1 to 6 As shown), the movable gate 6 slides in the left-right direction perpendicular to the vertical direction of the vehicle; in the second installation method, the drive motor 4 is installed on the outer side (left or right side) of the fuel tank body 1, the transmission rack 7 is installed in the vertical direction, and the movable gate 6 slides back and forth in the vertical direction. When the movable gate 6 slides upward, the connecting port 52 is opened, and when the movable gate 6 moves downward, the connecting port 52 is closed.

[0035] It should be noted that, in order to ensure the effectiveness of the fuel connection between the low-level oil chamber 12 and the high-level oil chamber 11, the connection port 52 needs to be located close to the bottom of the fuel tank body 1 to ensure the flow of fuel when the fuel level is low.

[0036] The driving mechanism can also adopt the following structure, i.e., embodiment 2 of the driving mechanism (the driving mechanism of the rack is embodiment 1): the driving mechanism adopts the screw-nut cooperation mode, and the driving mechanism still comprises the driving motor 4, the screw rod connected with the main shaft of the driving motor 4, and the nut cooperating with the screw rod; the screw rod rotates with the main shaft of the driving motor 4, and the nut moves linearly with the rotation of the screw rod due to being connected with the movable shutter 6, thereby driving the movable shutter 6 connected with the nut to reciprocate and slide, and opening or closing the communication port 52 on the fixed partition plate 5. The screw rod extends into the fuel tank body 1, and both ends of the screw rod are rotationally connected with the support provided on the fixed partition plate 5. The installation mode of the driving motor 4 can also be installed on the top or side of the fuel tank body 1.

[0037] Embodiment 3 of the driving mechanism: the driving mechanism can also adopt an electric push rod, a gas cylinder, a hydraulic cylinder or other linear driver to directly drive the movable shutter to reciprocate and linearly slide, and open or close the communication port 52.

[0038] In some embodiments, referring to Figures 4 to 6 , the fixed partition plate 5 is provided with a travel switch 9 limiting the opening degree of the movable shutter 6. At this time, the travel switch 9 is arranged in the opening direction of the movable shutter, and the travel switch 9 is touched when the movable shutter 6 is opened to the limit position, and then the driving motor 4 stops running, thereby avoiding the risk that the sliding way 51 of the movable shutter 6 and the fixed partition plate 5 is separated, and achieving the protection effect of the movement of the movable shutter 6. The travel switch 9 and the driving motor 4 are in signal communication through the controller 3.

[0039] The application can also install a position sensor on the fixed partition plate 5 to replace the travel switch 9, and achieve the function of limiting the opening degree of the movable shutter 6.

[0040] In some embodiments, referring to Figures 4 to 6, the elastic member 10 is connected to the end of the movable gate 6 away from the travel switch 9, and the extension direction of the elastic member 10 is consistent with the sliding direction of the movable gate 6. When the movable gate 6 is opened, the elastic member 10 is stretched, and the elastic member 10 can store elastic energy. When the movable gate 6 is closed to connect the opening 52, the elastic member 10 can be reset to release the elastic energy to quickly close the opening 52 to quickly cut off the oil liquid, thereby preventing the oil liquid flowing from the low oil cavity to the low oil cavity when the vehicle is instantaneously jolted and vibrated. Therefore, the elastic member 10 assists the closing of the movable gate 6 to shorten the closing time of the movable gate 6. In particular, the elastic member 10 is a mechanical structure, and if the electric control of the driving motor 4 fails instantaneously, the elastic member 10 can still drag the movable gate 6 to quickly close the opening 52. The fixed partition 5 and the movable gate are respectively provided with a hanging ring connected to the elastic member 10, and the elastic member 10 is a spring or a spring rope.

[0041] In some embodiments, referring to Figures 4 to 6 , the fixed partition 5 is provided with a sliding channel 51, and the movable gate 6 is slidably connected with the sliding channel 51. The sliding channel 51 has a guiding and limiting effect on the sliding of the movable gate 6, and the movable gate 6 is connected with the fixed partition 5 by sliding. The driving motor 4 drives the movable gate 6 to reciprocate along the sliding channel 51 to open or close the opening 52.

[0042] In some embodiments, referring to Figures 4 to 6 , the opening 52 is a rectangular hole, and the sliding channel 51 is symmetrically arranged on the opposite two long sides or two short sides of the rectangular hole. According to the sliding direction of the movable gate 6 that can slide up and down and slide left and right, when the long side of the rectangular hole is consistent with the left-right direction and the short side is consistent with the up-down direction, the sliding channel 51 is arranged on the long side, and the movable gate 6 slides in the left-right direction. At this time, the driving motor 4 is installed on the top of the fuel tank body 1, which conforms to the embodiment 1 of the driving mechanism. Based on this arrangement of the rectangular hole, the sliding channel 51 can also be arranged on the two short sides of the rectangle, and at this time, the sliding channel 51 extends in the up-down direction, and the movable gate 6 slides in the up-down direction. At this time, the driving motor 4 is installed on the side of the fuel tank body 1. Of course, the rectangular hole can be arranged in a manner that the long side is consistent with the up-down direction and the short side is consistent with the left-right direction.

[0043] Alternatively, the opening 52 can also be a circular hole, a polygonal hole, etc. without limitation.

[0044] Specifically, the communication port 52 can be a hole, such as a rectangular hole or a circular hole, provided on the fixed partition plate 5; or can be a notch, such as a rectangular notch provided on the lower side of the fixed partition plate 5, or a rectangular notch provided on the left side or the right side of the fixed partition plate 5; or can be a gap formed between the lower edge of the fixed partition plate 5 and the tank bottom of the fuel tank body 1, in which case the lower edge of the fixed partition plate 5 is not in contact with the tank bottom of the fuel tank body 1, and the movable shutter slides up and down to open or close the communication port 52 in dependence on the fixed partition plate 5.

[0045] In some embodiments, referring to Figures 4 to 6 , the fixed partition plate 5 is provided with a plurality of communication ports 52, the plurality of communication ports 52 are different in height, and the communication port 52 in the lowest position is close to the tank bottom of the fuel tank body 1; the movable shutter 6 comprises a connecting plate and branch plates corresponding to the closing of the communication ports 52. The transmission rack 7 is fixed on the connecting plate, and the branch plates are simultaneously slid by the connecting plate to open or close the communication ports 52.

[0046] When a plurality of communication ports 52 are provided, an independent movable shutter 6 can be provided on each communication port, and a linear actuator can be provided for each movable shutter 6, so that the opening or closing action of the movable shutter on each communication port 52 can be performed independently. For example, each movable shutter 6 is closed or opened by a respective electric push rod, so that the high-position communication port or the low-position communication port can be closed or opened respectively according to the need.

[0047] In some embodiments, referring to Figures 4 to 6 , the slide 51 is a bent plate fixed on the fixed partition plate 5, and the bent plate and the fixed partition plate 5 form a sliding groove for the sliding of the movable shutter 6. The bent plate can be an integral structure with the fixed partition plate 5.

[0048] Alternatively, the slide 51 is a sliding groove directly provided on the fixed partition plate 5, and both sides of the movable shutter 6 are fitted in the sliding groove.

[0049] Alternatively, the slide 51 is a T-shaped slide rail or a T-shaped sliding groove (or a dovetail groove) installed on the fixed partition plate 5, and the movable shutter 6 is provided with a T-shaped sliding groove or a T-shaped slide rail in cooperation.

[0050] In some embodiments, referring to Figures 1 to 3, the tank bottom of the fuel tank body 1 is an inverted trapezoidal shape with the upper bottom facing downward, the lower bottom of the inverted trapezoidal tank bottom constitutes a bottom plane on which the oil pump 2 is installed, and two waist portions of the inverted trapezoidal tank bottom constitute two flow guide inclined surfaces 13 symmetrically on two sides of the bottom plane; the fixed partition plate 5 is in two groups and symmetrically arranged at the junction of the bottom plane and the flow guide inclined surface 13. At this time, the inverted trapezoid is an isosceles trapezoid or an unequal trapezoid. At this time, the two fixed partition plates 5 divide the fuel tank body 1 into two high-position oil chambers 11 and one low-position oil chamber 12; the two high-position oil chambers 11 are symmetrically arranged on two sides of the low-position oil chamber 12. The bottom of the high-position oil chamber 11 is the flow guide inclined surface 13, and the bottom of the low-position oil chamber 12 is the lower bottom of the trapezoid.

[0051] The tank bottom of the fuel tank body 1 can also be a right-angle trapezoid, that is, only one flow guide inclined surface 13 is arranged.

[0052] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0053] Based on the same inventive concept, the embodiment of the present application also provides a vehicle comprising the fuel tank assembly.

[0054] The vehicle provided by the embodiment of the present application can adjust the utilization rate of fuel in different states by opening or closing the movable gate, can not only improve the utilization rate of fuel, but also can reduce the risk of oil gas leakage and overheating failure of the oil pump 2, and improve the driving performance of the vehicle.

[0055] The above only describes the preferred embodiments of the present application and does not limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel tank assembly, characterized by, The application relates to a fuel tank assembly. The fuel tank body (1) is internally provided with a fixed partition plate (5) and a movable gate plate (6), and the inside of the tank bottom is formed with a flow guide slope (13) to form a height difference. The fixed partition plate (5) is fixed to the inside of the fuel tank body (1) and separates the inside of the fuel tank body (1) into a low oil cavity (12) and a high oil cavity (11) by means of the height difference of the tank bottom; the lowest position of the low oil cavity (12) is lower than that of the high oil cavity (11); the fixed partition plate (5) is provided with a communication port (52) for communicating the low oil cavity (12) and the high oil cavity (11); the movable gate plate (6) is movably connected to the fixed partition plate (5) and opens or closes the communication port (52) through a driving mechanism; and an oil pump (2) is installed in the low oil cavity (12). The driving mechanism comprises a driving motor (4), a transmission gear (8) and a transmission rack (7); the driving motor (4) is installed outside the fuel tank body (1); the transmission gear (8) is installed on the main shaft of the driving motor (4); the transmission rack (7) is installed on the movable gate plate (6); the transmission gear (8) is located in the fuel tank body (1) and is engaged with the transmission rack (7); the driving motor (4) drives the movable gate plate (6) to reciprocatingly slide along the fixed partition plate (5) through the rotation of the transmission gear (8) to open or close the communication port (52). The fixed partition plate (5) is provided with a travel switch (9) for limiting the opening of the movable gate plate (6).

2. The fuel tank assembly of claim 1, wherein, The fixed partition plate (5) and the movable gate plate (6) are further provided with an elastic member (10) connected to the end of the movable gate plate (6) away from the travel switch (9), and the extension direction of the elastic member (10) is consistent with the sliding direction of the movable gate plate (6).

3. The fuel tank assembly of claim 1, wherein, The fixed partition plate (5) is provided with a sliding channel (51), and the movable gate plate (6) is slidably connected with the sliding channel (51).

4. The fuel tank assembly of claim 3, wherein, The communication port (52) is a rectangular hole, and the sliding channel (51) is symmetrically arranged on the opposite two long sides or two short sides of the rectangular hole.

5. The fuel tank assembly of claim 1, wherein, The fixed partition plate (5) is provided with a plurality of communication ports (52) with different high and low positions; the movable gate plate (6) comprises a connecting plate and branch plates corresponding to the closing of the communication ports (52).

6. The fuel tank assembly of claim 5, wherein, The sliding channel (51) is a bent plate fixed to the fixed partition plate (5), and the bent plate and the fixed partition plate (5) form a sliding groove for the sliding of the movable gate plate (6).

7. The fuel tank assembly of claim 6, wherein, The tank bottom of the fuel tank body (1) is in an inverted trapezoidal shape with the upper bottom facing downward; the lower bottom of the tank bottom forms a bottom plane for installing the oil pump (2); the two waists of the tank bottom symmetrically form two flow guide slopes (13) on the two sides of the bottom plane; and the fixed partition plate (5) is provided with two groups of fixed partition plates symmetrically arranged at the junction of the bottom plane and the flow guide slopes (13).

8. The fuel tank assembly of claim 5, wherein, The application further relates to a fuel tank assembly comprising the fuel tank assembly according to any one of claims 1-8.

9. The fuel tank assembly of any one of claims 1-8, wherein, ​ 10. A vehicle characterized by comprising: ​

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