Fuel tank assembly and vehicle with same

Abstract

The utility model discloses a fuel tank assembly and a vehicle with the same. The fuel tank assembly comprises a first fuel tank and a second fuel tank, the first fuel tank is provided with a containing space, the second fuel tank is provided with a containing groove, the second fuel tank is arranged in the containing space, and a groove opening of the containing groove is connected with the inner wall of the containing space in a sealed mode to form a second fuel cavity. The first fuel cavity is jointly defined by the outer wall of the containing groove and the inner wall of the containing space, so that the integration level of the fuel tank assembly is improved, and the occupied space and the assembly time of the fuel tank assembly are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a fuel tank assembly and a vehicle with the fuel tank assembly. Background Art

[0002] In the related art, a dual-fuel vehicle has two independent energy storage boxes, and corresponding assembly spaces need to be set on the vehicle body for the two energy storage boxes. The two energy storage boxes are respectively installed on the vehicle body through their respective corresponding connection structures. The two energy storage boxes occupy a large space in the vehicle and require a long assembly time. Utility Model Content

[0003] The utility model aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the utility model provides a fuel tank assembly, which can reduce the occupied space and assembly time of the fuel tank assembly.

[0004] The utility model also provides a vehicle with the fuel tank assembly.

[0005] According to an embodiment of the utility model, the fuel tank assembly includes: a first fuel tank and a second fuel tank, the first fuel tank having a accommodating space; the second fuel tank having a accommodating groove, the second fuel tank is arranged in the accommodating space, the notch of the accommodating groove is sealed and connected to the inner wall of the accommodating space to form a second fuel cavity, and the outer wall of the accommodating groove and the inner wall of the accommodating space jointly define the first fuel cavity.

[0006] According to the fuel tank assembly of the embodiment of the utility model, the first fuel tank has a accommodating space, the second fuel tank has a accommodating groove, the second fuel tank is arranged in the accommodating space, the notch of the accommodating groove is sealed and connected to the inner wall of the accommodating space to form a second fuel cavity, and the outer wall of the accommodating groove and the inner wall of the accommodating space jointly define the first fuel cavity, so as to improve the integration of the fuel tank assembly, thereby helping to reduce the occupied space and assembly time of the fuel tank assembly.

[0007] According to some embodiments of the present utility model, the first fuel tank includes an upper tank body and a lower tank body, and the upper tank body and the lower tank body are fixedly connected and jointly define the accommodating space.

[0008] According to some embodiments of the utility model, the second fuel tank includes a box body portion and a flange portion that are fixedly connected, the box body portion defines the accommodating groove, the flange portion is arranged around the notch of the accommodating groove, and the notch of the accommodating groove is sealed and connected to the inner wall of the accommodating space through the flange portion.

[0009] According to some embodiments of the present invention, an end surface of the box body away from the notch of the accommodating groove abuts against an inner wall of the accommodating space.

[0010] According to some embodiments of the present invention, the first fuel tank and the second fuel tank are both made of stainless steel, and the flange portion is sealed and connected to the inner wall of the accommodating space by roll welding.

[0011] According to some embodiments of the present utility model, the first fuel tank is provided with a first fuel pump mounting hole, a first safety valve mounting hole, a first fuel filling hole and an exhaust hole which are connected with the first fuel cavity.

[0012] According to some embodiments of the present invention, the first fuel tank is provided with a second fuel pump mounting hole, a second safety valve mounting hole and a second fuel filling hole which are opposite to and connected with the notch of the accommodating groove.

[0013] According to some embodiments of the present invention, the first fuel chamber is used to store methanol, and the second fuel chamber is used to store gasoline.

[0014] According to some embodiments of the present invention, the volume of the first fuel chamber is V1, the volume of the second fuel chamber is V2, and V1 and V2 satisfy the relationship: 5V2≤V1≤15V2.

[0015] A vehicle according to another embodiment of the present invention includes the above-mentioned fuel tank assembly.

[0016] According to the vehicle of the embodiment of the utility model, the first fuel tank has a accommodating space, the second fuel tank has a accommodating groove, the second fuel tank is arranged in the accommodating space, the notch of the accommodating groove is sealed and connected to the inner wall of the accommodating space to form a second fuel cavity, and the outer wall of the accommodating groove and the inner wall of the accommodating space jointly define the first fuel cavity, so as to improve the integration of the fuel tank assembly, thereby facilitating to reduce the occupied space and assembly time of the fuel tank assembly and save the layout space of the vehicle.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The explosion of the fuel tank assembly according to the embodiment of the utility model Figure 1 ;

[0019] Figure 2 The explosion of the fuel tank assembly according to the embodiment of the utility model Figure 2 ;

[0020] Figure 3 is a top view of a fuel tank assembly according to an embodiment of the utility model;

[0021] Figure 4It is a cross-sectional view of the fuel tank assembly at the connection between the upper tank body and the second fuel tank according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] First fuel tank 1; accommodating space 11; first fuel cavity 111; second fuel cavity 112; upper box body 12; upper box body main body 121; upper box body flange 122; lower box body 13; lower box body main body 131; lower box body flange 132; first fuel pump mounting hole 14; first safety valve mounting hole 15; first fuel filling hole 16; exhaust hole 17; second fuel pump mounting hole 18; second safety valve mounting hole 19; second fuel filling hole 20;

[0024] The second fuel tank 2; the receiving groove 21; the notch 211; the box body 22; the flange portion 23;

[0025] Fuel tank assembly 10. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Combine the following Figure 1-Figure 4 A fuel tank assembly 10 and a vehicle having the same according to an embodiment of the present invention will be described in detail.

[0031] Reference Figure 1-Figure 4 As shown, the fuel tank assembly 10 according to the embodiment of the utility model includes a first fuel tank 1 and a second fuel tank 2. The fuel tank assembly 10 can be used in a vehicle. The first fuel tank 1 has a receiving space 11, and the second fuel tank 2 has a receiving groove 21. The second fuel tank 2 is arranged in the receiving space 11, that is, the second fuel tank 2 is built in the first fuel tank 1, and the notch 211 of the receiving groove 21 is sealed and connected with the inner wall of the receiving space 11 to form a second fuel cavity 112, and the outer wall of the receiving groove 21 and the inner wall of the receiving space 11 jointly define the first fuel cavity 111, and different fuels can be stored in the first fuel cavity 111 and the second fuel cavity 112 respectively. The second fuel tank 2 separates the receiving space 11 into the relatively independent first fuel cavity 111 and the second fuel cavity 112, and the fuel tank assembly 10 is more compact, which is conducive to reducing the occupied space and assembly time of the fuel tank assembly 10. It should be noted that the inner wall of the receiving space 11 is the inner wall of the first fuel tank 1.

[0032] It can be understood that the notch 211 of the receiving groove 21 is sealed and connected to the inner wall of the receiving space 11, the inner wall of the receiving groove 21 and a part of the inner wall of the receiving space 11 jointly define the second fuel cavity 112, and the outer wall of the receiving groove 21 and another part of the inner wall of the receiving space 11 jointly define the first fuel cavity 111. The second fuel tank 2 does not require an additional sealing structure to seal the notch 211 of the receiving groove 21, which is beneficial to saving the manufacturing materials of the second fuel tank 2, reducing the manufacturing cost and weight of the second fuel tank 2, and can also reduce the development of the mold of the sealing structure, reduce the production line of the sealing structure, and save the development and verification cost of the fuel tank assembly 10. In addition, when installing the fuel tank assembly 10 on the vehicle, since the second fuel tank 2 is built into the first fuel tank 1, there is no need to install the second fuel tank 2 separately, and only the first fuel tank 1 needs to be installed on the vehicle. This can reduce the number of fixing points on the vehicle for fixing the fuel tank assembly 10, and the installation operation space of the fuel tank assembly 10 is larger, which facilitates the installation of the fuel tank assembly 10 and reduces the time for assembling the fuel tank assembly 10 on the vehicle body.

[0033] According to the fuel tank assembly 10 of the embodiment of the utility model, the first fuel tank 1 has a accommodating space 11, the second fuel tank 2 has a accommodating groove 21, the second fuel tank 2 is arranged in the accommodating space 11, the notch 211 of the accommodating groove 21 is sealed and connected to the inner wall of the accommodating space 11 to form a second fuel cavity 112, and the outer wall of the accommodating groove 21 and the inner wall of the accommodating space 11 jointly define the first fuel cavity 111, so as to improve the integration of the fuel tank assembly 10, thereby helping to reduce the occupied space and assembly time of the fuel tank assembly 10.

[0034] In some embodiments of the present invention, referring to Figure 1-Figure 4 As shown, the first fuel tank 1 includes an upper tank body 12 and a lower tank body 13 , which are fixedly connected and jointly define a receiving space 11 , so that the second fuel tank 2 can be installed in the receiving space 11 .

[0035] It can be understood that when the second fuel tank 2 is installed in the accommodating space 11, the second fuel tank 2 can be sealed and connected to the inner wall of the upper box body 12 in advance, and then the upper box body 12 and the lower box body 13 are fixedly connected. The second fuel tank 2 can be smoothly installed in the accommodating space 11, and the first fuel tank 1 is split into the upper box body 12 and the lower box body 13, which is conducive to improving the convenience of assembly of the fuel tank assembly 10 and reducing the assembly time of the fuel tank assembly 10.

[0036] Reference Figure 1-Figure 4As shown, the upper box body 12 includes an upper box body main body 121 and an upper box body flange part 122 that are fixedly connected, and the lower box body 13 includes a lower box body main body 131 and a lower box body flange part 132 that are fixedly connected. The upper box body flange part 122 and the lower box body flange part 132 both extend in a direction away from the accommodating space 11. The upper box body flange part 122 and the lower box body flange part 132 can be fixedly connected by rolling welding to ensure that the accommodating space 11 is reliably sealed. The upper box body flange part 122 and the lower box body flange part 132 can increase the connection area between the upper box body 12 and the lower box body 13, which is beneficial to improve the stability, reliability and sealing of the connection between the upper box body 12 and the lower box body 13.

[0037] In some embodiments of the present invention, referring to Figure 1-Figure 4 As shown, the second fuel tank 2 includes a box body portion 22 and a flange portion 23 that are fixedly connected. The box body portion 22 defines a receiving groove 21. The flange portion 23 is arranged around a notch 211 of the receiving groove 21. The notch 211 of the receiving groove 21 is sealed and connected to the inner wall of the receiving space 11 through the flange portion 23, so that the first fuel cavity 111 and the second fuel cavity 112 are independent of each other. The flange portion 23 can increase the connection area between the second fuel tank 2 and the inner wall of the receiving space 11, which is beneficial to improve the stability, reliability and sealing of the connection between the second fuel tank 2 and the first fuel tank 1.

[0038] In one embodiment, referring to Figure 4 As shown, the flange portion 23 extends in a direction away from the second fuel cavity 112 to form an outer flange, and the flange portion 23 and the box body portion 22 can form a basin structure that is open on the top and has an outer flange. The flange portion 23 is sealed and connected to the inner wall of the upper box body 12 of the first fuel tank 1 to increase the connection area between the second fuel tank 2 and the inner wall of the upper box body 12, and improve the stability, reliability and sealing of the connection between the second fuel tank 2 and the inner wall of the upper box body 12. In another embodiment, the flange portion 23 can extend in a direction close to the second fuel cavity 112 to form an inner flange.

[0039] In some embodiments of the utility model, the end surface of the box body 22 away from the notch 211 of the accommodating groove 21 abuts against the inner wall of the accommodating space 11, and the lower surface of the box body 22 and the inner wall of the accommodating space 11 can be at least partially fitted and fixed to increase the contact area between the second fuel tank 2 and the first fuel tank 1, thereby further improving the stability and reliability of the connection between the second fuel tank 2 and the first fuel tank 1.

[0040] Specifically, the upper end of the second fuel tank 2 is fixedly connected to the upper box body 12 through the flange portion 23, the lower end of the second fuel tank 2 is fixedly connected to the lower box body 13, and the upper and lower ends of the second fuel tank 2 are fixedly connected to the first fuel tank 1, which is beneficial to improving the reliability and stability of the connection between the second fuel tank 2 and the first fuel tank 1.

[0041] In some embodiments of the utility model, the first fuel tank 1 and the second fuel tank 2 are both made of stainless steel, and the flange 23 is connected to the inner wall of the accommodating space 11 by roll welding. The stainless steel first fuel tank 1 and the second fuel tank 2 are easy to process by roll welding, and the sealing reliability of the flange 23 and the inner wall of the accommodating space 11 at the connection is high. It can be understood that when the flange 23 is connected to the inner wall of the accommodating space 11 by roll welding, the flange 23 and the inner wall of the accommodating space 11 will be subjected to the pressure of the welding tool. Stainless steel has high strength and toughness, which can avoid the fracture and failure of the flange 23 and the inner wall of the accommodating space 11, and ensure the stability and reliability of the connection between the first fuel tank 1 and the second fuel tank 2. In addition, stainless steel also has good corrosion resistance, which can effectively resist the corrosion of fuel, thereby helping to improve the service life of the first fuel tank 1 and the second fuel tank 2.

[0042] In some embodiments of the present invention, referring to Figure 1-Figure 3 As shown, the first fuel tank 1 is provided with a first fuel pump mounting hole 14, a first safety valve mounting hole 15, a first fuel filling hole 16 and an exhaust hole 17 which are connected to the first fuel cavity 111. The first fuel pump mounting hole 14 is suitable for mounting a first fuel pump, which can pump the fuel in the first fuel cavity 111 to the power system. The first safety valve mounting hole 15 is suitable for mounting a first safety valve. When the pressure in the first fuel tank 1 is too high, the first safety valve opens to release the pressure in the first fuel tank 1 to prevent the first fuel tank 1 from bursting and avoiding accidents. The first fuel filling hole 16 is suitable for filling fuel into the first fuel cavity 111. The exhaust hole 17 is suitable for exhausting the air in the first fuel cavity 111. When the first fuel cavity 111 is filled with fuel, the air in the first fuel cavity 111 can be exhausted through the exhaust hole 17 to improve the smoothness of fuel filling.

[0043] In some embodiments of the present invention, referring to Figure 1-Figure 3 As shown, the first fuel tank 1 is provided with a second fuel pump mounting hole 18, a second safety valve mounting hole 19 and a second fuel filling hole 20 which are opposite to and connected to the notch 211 of the accommodating groove 21, and the second fuel tank 2 does not need to be additionally opened, thereby helping to reduce the difficulty of manufacturing the second fuel tank 2 and reducing the manufacturing time of the second fuel tank 2.

[0044] It can be understood that the second fuel pump mounting hole 18 is suitable for mounting a second fuel pump, which can pump the fuel in the second fuel chamber 112 to the power system. The second safety valve mounting hole 19 is suitable for mounting a second safety valve. When the pressure in the second fuel tank 2 is too high, the second safety valve opens to release the pressure in the second fuel tank 2 to prevent the second fuel tank 2 from bursting and avoid accidents. When it is necessary to add fuel to the second fuel tank 2, fuel can be added to the second fuel tank 2 through the second fuel filling hole 20.

[0045] Reference Figure 4 As shown, the second fuel tank 2 is sealed and connected to the inner wall of the upper box body 12 of the first fuel tank 1, and after the upper box body 12 and the lower box body 13 of the first fuel tank 1 are fixedly connected, the welding tool can enter the receiving groove 21 through the second fuel pump mounting hole 18 and the notch 211 of the receiving groove 21, and the welding tool can spot weld and fix the end face of the box body portion 22 of the second fuel tank 2 away from the notch 211 of the receiving groove 21 and the inner wall of the lower box body 13.

[0046] In some embodiments of the present invention, the first fuel chamber 111 is used to store methanol, and the second fuel chamber 112 is used to store gasoline. The ignition point of methanol is higher than that of gasoline. In a low-temperature environment, methanol fuel is difficult to ignite, resulting in difficulty in starting the power system. Gasoline has a lower ignition point and is easier to ignite in a low-temperature environment. The power system can be started or heated with gasoline first and then switched to methanol to improve the low-temperature starting performance of the power system.

[0047] In some embodiments of the present invention, the volume of the first fuel chamber 111 is V1, and the volume of the second fuel chamber 112 is V2. V1 and V2 satisfy the relationship: 5V2≤V1≤15V2, that is, the volume of the first fuel chamber 111 is 5 to 15 times the volume of the second fuel chamber 112. Since the calorific value ratio of methanol to gasoline is 1.7:1, under the same driving range, the volume of methanol consumed is twice the volume of gasoline. V1 can be 5V2, 6V2, 8V2, 15V2, etc., to ensure that there is enough methanol to ensure the vehicle's driving range.

[0048] It is understandable that if V1<5V2, the volume of methanol that can be accommodated in the first fuel chamber 111 is small, which is not conducive to the driving range of the vehicle using methanol. If V1>15V2, the volume of the first fuel chamber 111 is large, resulting in a large volume of the fuel tank assembly 10, which is not conducive to the layout of the fuel tank assembly 10.

[0049] In some embodiments of the present invention, V1=6V2, the first fuel chamber 111 can accommodate a larger volume of methanol to meet the vehicle's cruising range, and the volume of the first fuel chamber 111 is moderate, and the volume of the fuel tank assembly 10 is moderate, which facilitates the layout of the fuel tank assembly 10.

[0050] In some other embodiments of the present invention, V1=10V2, wherein V1 is 100L and V2 is 10L.

[0051] In some embodiments of the present invention, the second fuel tank 2 has a liquid level sensor to measure the liquid level height of the fuel in the second fuel tank 2. Since the liquid level sensor requires a certain swing space during measurement, the liquid level sensor can adopt a float rod type liquid level sensor to facilitate the measurement of the liquid level height.

[0052] According to the fuel tank assembly 10 of the embodiment of the utility model, the flange portion 23 of the second fuel tank 2 is roll-welded to the inner wall of the upper box body 12 of the first fuel tank 1 to form a closed box body, and the second fuel tank 2 is built into the first fuel tank 1. From the appearance of the fuel tank assembly 10, the fuel tank assembly 10 is a box body, which can greatly save the space occupied by the fuel tank assembly 10, save the production cost of the fuel tank assembly 10, and reduce the assembly time of the fuel tank.

[0053] A vehicle according to another embodiment of the present invention includes the fuel tank assembly 10 of the above embodiment.

[0054] According to the vehicle of the embodiment of the utility model, the first fuel tank 1 has a accommodating space 11, the second fuel tank 2 has a accommodating groove 21, the second fuel tank 2 is arranged in the accommodating space 11, the notch 211 of the accommodating groove 21 is sealed and connected with the inner wall of the accommodating space 1 to form a second fuel cavity 112, and the outer wall of the accommodating groove 21 and the inner wall of the accommodating space 11 jointly define the first fuel cavity 111, so as to improve the integration of the fuel tank assembly 10, thereby helping to reduce the occupied space and assembly time of the fuel tank assembly 10 and save the layout space of the vehicle.

[0055] In some embodiments of the utility model, the vehicle model may be: a general sedan, MPV, SUV, LCV, etc. The vehicle chassis of the above models are all relatively low, and the fuel tank assembly 10 may be suspended and arranged at the bottom of the vehicle's body-in-white and fixed by straps.

[0056] In the related art, the bottom of the vehicle body-in-white is usually arranged with exhaust devices, brake lines, wiring harnesses, controllers, etc., and the space at the bottom of the body-in-white is very limited. Since the fuel tank assembly 10 is an internal hollow closed structure, in order to make the most of the limited space at the bottom of the body-in-white, the fuel tank assembly 10 is usually designed into an irregular shape, and the manufacturing difficulty of the fuel tank assembly 10 is relatively large. In the fuel tank assembly 10 of the embodiment of the utility model, the first fuel tank 1 and the second fuel tank 2 can both be stamped from stainless steel plates, which is conducive to reducing the manufacturing difficulty of the fuel tank assembly 10 and improving the production efficiency of the fuel tank assembly 10.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fuel tank assembly, characterized in that: include: A first fuel tank (1), the first fuel tank (1) having a containing space (11); A second fuel tank (2), the second fuel tank (2) having a receiving groove (21), the second fuel tank (2) being arranged in the receiving space (11), the notch (211) of the receiving groove (21) being sealedly connected to the inner wall of the receiving space (11) to form a second fuel cavity (112), and the outer wall of the receiving groove (21) and the inner wall of the receiving space (11) jointly defining a first fuel cavity (111).

2. The fuel tank assembly according to claim 1, characterized in that: The first fuel tank (1) comprises an upper tank body (12) and a lower tank body (13); the upper tank body (12) and the lower tank body (13) are fixedly connected and jointly define the accommodating space (11).

3. The fuel tank assembly according to claim 1, characterized in that: The second fuel tank (2) comprises a box body (22) and a flanged edge (23) which are fixedly connected, the box body (22) defining the receiving groove (21), the flanged edge (23) being arranged around a notch (211) of the receiving groove (21), and the notch (211) of the receiving groove (21) being sealed and connected to the inner wall of the receiving space (11) via the flanged edge (23).

4. The fuel tank assembly according to claim 3, characterized in that: An end surface of the box body (22) away from the notch (211) of the accommodating groove (21) abuts against an inner wall of the accommodating space (11).

5. The fuel tank assembly according to claim 3, characterized in that: The first fuel tank (1) and the second fuel tank (2) are both made of stainless steel, and the flange portion (23) is sealed and connected to the inner wall of the accommodating space (11) by rolling welding.

6. The fuel tank assembly according to claim 1, characterized in that: The first fuel tank (1) is provided with a first fuel pump mounting hole (14) communicating with the first fuel cavity (111), a first safety valve mounting hole (15), a first fuel filling hole (16) and an exhaust hole (17).

7. The fuel tank assembly according to claim 1, characterized in that: The first fuel tank (1) is provided with a second fuel pump mounting hole (18), a second safety valve mounting hole (19) and a second fuel filling hole (20) which are opposite to and communicated with the notch (211) of the accommodating groove (21).

8. The fuel tank assembly according to any one of claims 1 to 7, characterized in that: The first fuel chamber (111) is used to store methanol, and the second fuel chamber (112) is used to store gasoline.

9. The fuel tank assembly according to claim 8, characterized in that: The volume of the first fuel chamber (111) is V1, the volume of the second fuel chamber (112) is V2, and V1 and V2 satisfy the relationship: 5V2≤V1≤15V2.

10. A vehicle, characterized in that: It comprises a fuel tank assembly (10) according to any one of claims 1-9.

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