A urea tank and a vehicle having the same

Abstract

The application provides a urea tank and a vehicle with the same, which comprises a urea tank body, a urea supply module and a urea filling module are arranged on the top of the urea tank body, the urea filling module is located on one side of the urea supply module, the urea supply module is communicated with the inside of the urea tank body, the urea supply module is used for conveying urea in the urea tank body to a surface device, and the urea filling module is used for injecting urea into the urea tank body, wherein a back plate is arranged on the urea tank body, the back plate is used for being connected with a vehicle chassis, and the urea tank body and the back plate are integrally injection molded. The embodiment of the application solves the problems of large mass and complex bracket structure of the urea tank in the prior art.

Description

Technical Field

[0001] This invention relates to the field of urea tank technology, and more specifically, to a urea tank and a vehicle having the same. Background Technology

[0002] In existing technologies, urea tanks are typically manufactured separately, consisting of a separate tank body and a metal back plate. The absolute working pressure of the gas inside the urea tank is (0.9±0.03) MPa, and the pressure source does not exceed 1.2 MPa. To ensure pressure resistance and reliability, existing urea tanks are generally made of stainless steel, and the bracket structure of the urea tank is separate from the tank body. The upper and lower tank bodies are manufactured through die stamping and welding. Existing urea tanks have a cylindrical structure, resulting in large weight, complex bracket structures, and inconvenient use.

[0003] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide a urea tank and a vehicle having the same, in order to solve the problems of large mass and complex bracket structure of urea tanks in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a urea tank is provided, comprising: a urea tank body, a urea supply module and a urea filling module disposed on the top of the urea tank body, the urea filling module being located on one side of the urea supply module, the urea supply module being in communication with the interior of the urea tank body, the urea supply module being used to supply urea from the urea tank body to the surface equipment, and the urea filling module being used to inject urea into the urea tank body, wherein a back plate is disposed on the urea tank body, the back plate being used to connect to the vehicle chassis, and the urea tank body and the back plate being integrally injection molded.

[0006] Furthermore, the urea tank body and back plate are made of nylon and fiberglass.

[0007] Furthermore, the urea tank body includes: an upper tank body, the first end of which is provided with a urea supply module and a urea filling module; a lower tank body, the first end of which is connected to the second end of the upper tank body by hot gas welding, and the second end of the lower tank body forms the bottom end of the urea tank body, and the bottom of the urea tank body is provided with a drain port, and a plug is provided at the drain port; at least one of the upper tank body and the lower tank body is integrally provided with a back plate.

[0008] Furthermore, the back plate includes a first mounting plate segment and a second mounting plate segment. The first mounting plate segment is integrally injection molded with the upper tank body, and the second mounting plate segment is integrally injection molded with the lower tank body. The end of the first mounting plate segment facing the lower tank body and the end of the second mounting plate segment facing the upper tank body are connected by hot gas welding.

[0009] Furthermore, there are multiple back plates, which are spaced apart along the circumference of the urea tank body, forming an installation space between adjacent back plates.

[0010] Furthermore, an annular connecting groove is provided at the opening edge of the second end of the upper tank body, and the end of the first mounting plate segment facing the opening side of the upper tank body is flush with the opening edge of the upper tank body, and part of the annular connecting groove is opened on the end face of the first mounting plate segment.

[0011] Furthermore, an annular connecting protrusion that mates with the annular connecting groove is formed at the opening edge of the first end of the lower tank body, and part of the annular connecting protrusion extends to the end face of the second mounting plate section facing the first mounting plate section.

[0012] Furthermore, the outer wall of the annular connecting groove protrudes from the outer circumferential surface of the upper tank body, and a connecting flange is formed on the outer side of the annular connecting protrusion. The height of the connecting flange is lower than the height of the annular connecting protrusion. After the upper tank body and the lower tank body are connected by hot gas welding, the outer wall of the annular connecting groove is connected to the connecting flange and forms an envelope reinforcing rib extending circumferentially along the upper tank body and the lower tank body at the connection between the upper tank body and the lower tank body.

[0013] Furthermore, the urea filling module is connected to the urea tank body via stainless steel bolts, and / or the urea filling module is threadedly connected to the urea tank body.

[0014] According to another aspect of the present invention, a vehicle is provided, the vehicle having a urea tank, the urea tank being the urea tank described above.

[0015] By applying the technical solution of this invention, a urea supply module and a urea filling module are installed on the top of the urea tank. The urea supply module is connected to the inside of the urea tank and is used to transport the urea stored in the urea tank to the surface equipment. The urea filling module is used to replenish the urea in the urea tank. By placing the urea filling module on one side of the urea supply module, urea is prevented from splashing into the urea supply module during filling, effectively avoiding contamination. A back plate is integrally injection molded onto the urea tank body, avoiding the complexity of a split structure and the risks of stress cracking and seal failure caused by bolt tightening. Connecting the back plate to the vehicle chassis reduces manufacturing complexity and makes the urea tank structure lighter. By making the entire urea tank structure a unified whole, the overall structural strength of the urea tank is significantly improved, production costs are reduced, and the technical problems of large urea tank weight and complex bracket structure in the prior art are solved. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of a urea tank according to the present invention is shown;

[0018] Figure 2 A schematic diagram of a second embodiment of a urea tank according to the present invention is shown;

[0019] Figure 3 A schematic diagram of a third embodiment of a urea tank according to the present invention is shown;

[0020] Figure 4 A cross-sectional structural schematic diagram of an embodiment of a urea tank according to the present invention is shown;

[0021] Figure 5 A schematic diagram of the structure of an embodiment of the upper tank according to the present invention is shown;

[0022] Figure 6 A cross-sectional structural schematic diagram of an embodiment of the upper tank body according to the present invention is shown;

[0023] Figure 7 A cross-sectional structural schematic diagram of an embodiment of the lower tank according to the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 10. Urea tank body;

[0026] 20. Urea supply module;

[0027] 30. Urea dispensing module;

[0028] 50. Blockage;

[0029] 11. Upper tank body;

[0030] 110. Annular connecting groove;

[0031] 12. Lower tank body;

[0032] 121. Sewage outlet;

[0033] 122. Annular connecting protrusion;

[0034] 123. Connect the flange;

[0035] 40. Back panel;

[0036] 41. First mounting plate segment;

[0037] 42. Second mounting plate section. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0042] Combination Figures 1 to 7 As shown, according to a specific embodiment of this application, a urea tank is provided.

[0043] Specifically, the urea tank includes a urea tank body 10. A urea supply module 20 and a urea filling module 30 are provided on the top of the urea tank body 10. The urea filling module 30 is located on one side of the urea supply module 20. The urea supply module 20 is connected to the inside of the urea tank body 10. The urea supply module 20 is used to supply urea from the urea tank body 10 to the surface equipment. The urea filling module 30 is used to inject urea into the urea tank body 10. A back plate 40 is provided on the urea tank body 10. The back plate 40 is used to connect to the vehicle chassis. The urea tank body 10 and the back plate 40 are integrally injection molded.

[0044] By applying the technical solution of this embodiment, a urea supply module 20 and a urea filling module 30 are provided on the top of the urea tank body 10. The urea supply module 20 is connected to the inside of the urea tank body 10 and is used to transport the urea stored in the urea tank body 10 to the surface device. The urea filling module 30 is used to replenish urea into the urea tank body 10. By setting the urea filling module 30 on one side of the urea supply module 20, urea is prevented from splashing into the urea supply module 20 during the filling process, thus effectively avoiding contamination. By integrally injection molding a back plate 40 onto the urea tank body 10, the complexity of the split structure is avoided, as well as the risks of stress cracking and seal failure caused by bolt tightening. By connecting the back plate 40 to the vehicle chassis, the manufacturing complexity is reduced, making the urea tank structure lighter. By setting the entire urea tank structure as a unified whole, the overall structural strength of the urea tank is significantly improved, production costs are reduced, and the technical problems of large urea tank weight and complex bracket structure in the prior art are solved.

[0045] Preferably, the urea tank body 10 and the back plate 40 are made of nylon and glass fiber together.

[0046] In this embodiment, by making the urea tank body 10 and the back plate 40 together from nylon and glass fiber, the density of the urea tank body 10 and the back plate 40 is significantly reduced, greatly reducing the mass of the urea tank. At the same time, the back plate 40 made of nylon and glass fiber can avoid vibration during vehicle operation, prevent the urea tank body 10 from deforming or cracking, and significantly improve the rigidity of the overall structure of the urea tank.

[0047] Specifically, the urea tank body 10 includes an upper tank body 11 and a lower tank body 12. The first end of the upper tank body 11 is provided with a urea supply module 20 and a urea filling module 30. The first end of the lower tank body 12 is connected to the second end of the upper tank body 11 by hot gas welding, and the second end of the lower tank body 12 forms the bottom end of the urea tank body 10. The bottom of the urea tank body 10 is provided with a drain port 121, and a plug 50 is provided at the drain port 121. At least one of the upper tank body 11 and the lower tank body 12 is integrally provided with a back plate 40.

[0048] In this embodiment, a urea supply module 20 and a urea filling module 30 are provided at the first end of the upper tank 11. The urea supply module 20 and the urea filling module 30 are connected to the upper tank 11 to respectively supply and fill urea. The first end of the lower tank 12 is connected to the second end of the upper tank 11 by hot gas welding, so that the lower tank 12 and the upper tank 11 are firmly sealed, avoiding leakage risk and stress concentration. The lower tank 12 is set at the bottom of the urea tank 10, and a drain port 121 is provided at the bottom of the urea tank 10. A plug 50 is provided at the drain port to facilitate the discharge of impurities and sediments accumulated in the urea tank 10, thereby improving the cleanliness of the urea tank. By integrally providing a back plate 40 for at least one of the upper tank 11 and the lower tank 12, no assembly is required, avoiding assembly errors and improving the structural rigidity and sealing reliability of the urea tank.

[0049] Specifically, the back plate 40 includes a first mounting plate segment 41 and a second mounting plate segment 42. The first mounting plate segment 41 is integrally injection molded with the upper tank 11, and the second mounting plate segment 42 is integrally injection molded with the lower tank 12. The end of the first mounting plate segment 41 facing the lower tank 12 and the end of the second mounting plate segment 42 facing the upper tank 11 are connected by hot gas welding.

[0050] In this embodiment, by integrally injection molding the first mounting plate segment 41 with the upper tank body 11 and the second mounting plate segment 42 with the lower tank body 12, the back plate 40 forms two support points in the height direction, which improves the stability of the back plate 40 and the torsional stiffness of the urea tank body 10. The end of the first mounting plate segment 41 facing the lower tank body 12 and the end of the second mounting plate segment 42 facing the upper tank body 11 are connected by hot gas welding, which improves the continuity of the weld and avoids urea leakage caused by uneven sealing surfaces.

[0051] Furthermore, there are multiple back plates 40, which are arranged circumferentially around the urea tank body 10, forming an installation space between adjacent back plates 40.

[0052] In this embodiment, by setting multiple back plates 40 at circumferential intervals along the bottom of the urea tank body 10, an installation space is formed between two adjacent back plates 40. The multiple back plates 40 make the load evenly distributed along the circumferential direction, reducing the risk of cracking caused by stress concentration. At the same time, the installation space can provide clearance space for vehicle chassis components, avoiding assembly interference.

[0053] Furthermore, an annular connecting groove 110 is provided at the opening edge of the second end of the upper tank 11, and the end of the first mounting plate segment 41 facing the opening side of the upper tank 11 is flush with the opening edge of the upper tank 11, and part of the annular connecting groove 110 is opened on the end face of the first mounting plate segment 41.

[0054] In this embodiment, an annular connecting groove 110 is provided at the opening edge of the second end of the upper tank 11. Part of the annular connecting groove 110 is directly opened on the end face of the first mounting plate segment 41. When the upper tank 11 and the lower tank 12 are connected by hot gas welding, the molten material can fill the connection area between the first mounting plate segment 41 and the upper tank 11 to form a continuous welded bonding layer, which enhances the connection stability between the upper tank 11 and the lower tank 12. By setting the end of the first mounting plate segment 41 facing the opening side of the upper tank 11 flush with the opening edge of the upper tank 11, the problem of discontinuous welding interface structure is effectively prevented, the structural strength and sealing reliability of the welding area are significantly improved, and cracking or leakage caused by stress concentration is avoided.

[0055] Specifically, an annular connecting protrusion 122 is formed at the opening edge of the first end of the lower tank body 12 to cooperate with the annular connecting groove 110, and part of the annular connecting protrusion 122 extends to the end face of the second mounting plate section 42 facing the first mounting plate section 41.

[0056] In this embodiment, by providing an annular connecting protrusion 122 that mates with the annular connecting groove 110 at the opening edge of the first end of the lower tank 12, and extending the annular connecting protrusion 122 to the end face of the second mounting plate segment 42 facing the first mounting plate segment 41, a welding interface is formed in the connection area between the lower tank 12 and the upper tank 11 and the first mounting plate segment 41 during hot gas welding. This not only significantly increases the welding area but also enhances the structural rigidity of the connection, effectively avoiding the problem of insufficient weld strength or sealing failure, and improving the sealing performance and structural rigidity of the connection between the upper tank 11 and the lower tank 12.

[0057] Preferably, the outer wall of the annular connecting groove 110 protrudes from the outer circumferential surface of the upper tank 11, and a connecting flange 123 is formed on the outer side of the annular connecting protrusion 122. The height of the connecting flange 123 is lower than the height of the annular connecting protrusion 122. After the upper tank 11 and the lower tank 12 are connected by hot gas welding, the outer wall of the annular connecting groove 110 is connected to the connecting flange 123, and an envelope reinforcing rib extending circumferentially along the upper tank 11 and the lower tank 12 is formed at the connection between the upper tank 11 and the lower tank 12.

[0058] In this embodiment, by setting the outer wall of the annular connecting groove 110 to protrude from the outer circumferential surface of the upper tank 11, and forming a connecting flange 123 on the outer side of the annular connecting protrusion 122, and the height of the connecting flange 123 being lower than the height of the annular connecting protrusion 122, it is ensured that during the hot gas welding process, the connecting flange 123 can fully melt with the outer wall of the annular connecting groove 110 protruding from the outer circumferential surface of the upper tank 11, ensuring that the annular connecting protrusion 122 can be accurately embedded in the annular connecting groove 110 for positioning. By connecting the outer wall of the annular connecting groove 110 with the connecting flange 123 and forming an envelope reinforcing rib extending circumferentially along the upper tank 11 and lower tank 12 at the connection between the upper tank 11 and the lower tank 12, the shear resistance and vibration resistance of the connection area are effectively enhanced, the sealing performance and structural rigidity of the joint are significantly improved, and the risk of cracking or urea leakage during vehicle operation is avoided.

[0059] Specifically, the urea filling module 30 is connected to the urea tank body 10 by stainless steel bolts.

[0060] In this embodiment, the urea filling module 30 is connected to the urea tank body 10 by stainless steel bolts. The stainless steel bolts have higher strength, avoiding the risk of loosening of the connection of the urea tank body 10. At the same time, the stainless steel bolts are detachable, which facilitates later maintenance and replacement.

[0061] Specifically, the urea filling module 30 is threadedly connected to the urea tank body 10.

[0062] In this embodiment, by threading the urea filling module 30 to the urea tank body 10, the urea filling module 30 is directly fixed to the surface of the urea tank body 10, avoiding the risk of loosening of the connection of the urea tank body 10. At the same time, the detachable threaded connection facilitates later maintenance and replacement.

[0063] According to another specific embodiment of this application, a vehicle is also provided, the vehicle having a urea tank, the urea tank being the urea tank described above.

[0064] By applying the technical solution of this embodiment, a urea supply module 20 and a urea filling module 30 are provided on the top of the urea tank body 10. The urea supply module 20 is connected to the inside of the urea tank body 10 and is used to transport the urea stored in the urea tank body 10 to the surface device. The urea filling module 30 is used to replenish urea into the urea tank body 10. By setting the urea filling module 30 on one side of the urea supply module 20, urea is prevented from splashing into the urea supply module 20 during the filling process, thus effectively avoiding contamination. By integrally injection molding a back plate 40 onto the urea tank body 10, the complexity of the split structure is avoided, as well as the risks of stress cracking and seal failure caused by bolt tightening. By connecting the back plate 40 to the vehicle chassis, the manufacturing complexity is reduced, making the urea tank structure lighter. By setting the entire urea tank structure as a unified whole, the overall structural strength of the urea tank is significantly improved, production costs are reduced, and the technical problems of large urea tank weight and complex bracket structure in the prior art are solved.

[0065] By installing a urea supply module 20 and a urea filling module 30 on the top of the urea tank body 10, the urea supply module 20 is connected to the inside of the urea tank body 10 and is used to transport the urea stored in the urea tank body 10 to the surface equipment. The urea filling module 30 is used to replenish urea into the urea tank body 10. By placing the urea filling module 30 on one side of the urea supply module 20, urea is prevented from splashing into the urea supply module 20 during filling, effectively avoiding contamination and ensuring the safety and stability of the vehicle during operation. By integrally injection molding a back plate 40 onto the urea tank body 10, the assembly complexity of the separate structure is avoided, saving the overall vehicle assembly time, reducing the overall vehicle assembly error rate, avoiding the risks of stress cracking and seal failure caused by bolt tightening, and improving the vehicle's lifespan. By connecting the backplate 40 to the vehicle chassis, the overall vehicle layout space is optimized, the chassis flexibility is improved, the urea tank structure is made lighter, the overall vehicle weight and manufacturing cost are reduced, fuel consumption is saved, and the vehicle's range is improved.

[0066] In another embodiment of this application, an embodiment of a plastic urea tank structure with an integrated backplate support is also provided.

[0067] Specifically, the plastic urea tank is made of glass fiber reinforced nylon material and is injection molded under high pressure. The glass fiber content can be adjusted according to requirements.

[0068] Furthermore, the plastic urea tank includes an upper tank body 11 and a lower tank body 12. The top of the upper tank body 11 has a pre-reserved flange for connecting the urea supply module. Six stainless steel threaded sleeves are pre-embedded on the flange for fixing and sealing the urea supply module 20. At the same time, a urea solution filling port is reserved and fixed to the upper tank body 11 by welding. Opposite to the filling port is an integrated back plate 40 with two reserved fixing holes.

[0069] Furthermore, a drain port 121 is provided at the bottom of the lower tank 12, which is sealed by a plug and a sealing ring. A fixing hole is provided on the back plate 40. The upper and lower tanks are fixedly connected by welding, and the back plate 40 and the hole can be adjusted according to the space layout requirements.

[0070] like Figure 1 As shown, the urea tank includes a urea tank body 10, a urea filling module 30, a urea supply module 20, and a plug 50. The urea supply module 20 is fixed to the urea tank body 10 by stainless steel bolts, the urea filling module 30 is connected to the urea tank body 10 by threads, and the plug 50 is connected to the urea tank body 10 by threads. All three connections are sealed with sealing rings.

[0071] According to another embodiment of this application, a urea tank is provided, including an integrally injection-molded urea tank body 10, the top of which integrates a urea supply module 20 and a urea filling module 30, wherein the urea filling module is located on one side of the supply module to prevent filling contamination; the upper part of the tank body and the back plate 40 are integrally injection-molded from nylon + glass fiber material, and the back plate is directly used for connection with the vehicle chassis, eliminating the need for an independent metal bracket. The tank body is divided into an upper tank body 11 and a lower tank body 12. The first end of the upper tank body integrates a module, and the second end is sealed to the first end of the lower tank body by hot air welding. The bottom of the lower tank body is provided with a drain port 121 and a plug 50. The back plate structure is a split design, including a first mounting plate segment 41 integrally injection-molded with the upper tank body and a second mounting plate segment 42 integrally injection-molded with the lower tank body, which are connected by hot air welding to form a continuous load-bearing structure. Multiple back plates are spaced apart along the circumference of the tank body to form an installation space to avoid chassis components. The upper tank body has an annular connecting groove 110 at its second end, with its outer wall protruding from the outer circumference of the tank body and part of the groove extending to the end face of the first mounting plate section. The lower tank body has an annular connecting protrusion 122 at its first end, with a connecting flange 123 extending outward from its outer side. After welding, the protrusion is embedded in the groove, and the flange is fused with the outer wall of the groove, forming a circumferentially extending envelope reinforcing rib structure, which significantly improves the shear resistance, vibration resistance, and sealing performance of the welded area. The urea filling module is connected to the tank body by stainless steel bolts or threads, with a sealing ring assisting in the sealing. By integrating the backplate and tank body through injection molding, the urea tank achieves overall lightweighting (more than 30% lighter than traditional metal tanks), eliminating the need for independent metal brackets and fasteners, thus reducing assembly complexity and manufacturing costs. The backplate and tank body have no assembly gaps, eliminating the risk of bolt stress cracking and seal failure. The annular connecting groove and the flanged reinforcing ribs significantly improve the vibration resistance, fatigue resistance, and sealing performance of the tank connection parts. The circumferentially spaced backplate design optimizes load distribution and provides chassis clearance space, increasing the flexibility of vehicle layout. The overall structure meets the 0.9MPa air drive working pressure requirement, while also possessing good chemical corrosion resistance and impact resistance.

[0072] The technical solution adopted in this application has the following effects:

[0073] (1) The urea tank is produced by high pressure injection molding and the upper and lower tanks are connected by welding. The back plate 40 is integrated and only needs to be fixed to the chassis bracket by bolts. Compared with the air-driven metal urea tank assembly, the back plate bracket, hoops, hoops bolts, rubber pads and other structures are eliminated, achieving great advantages in weight reduction and cost reduction, while facilitating assembly.

[0074] (2) The plastic urea tank assembly of this embodiment is the first to use nylon and glass fiber material and is produced by high pressure injection molding and welding. Its strength is suitable for gas-driven urea tanks.

[0075] (3) The plastic urea tank assembly of this embodiment innovatively integrates the bracket into the plastic urea tank body, which is produced in one piece, has reliable strength, and is easy to assemble.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0078] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A urea tank, characterized in that, include: The urea tank body (10) is provided with a urea supply module (20) and a urea filling module (30) on the top of the urea tank body (10). The urea filling module (30) is located on one side of the urea supply module (20). The urea supply module (20) is connected to the interior of the urea tank body (10). The urea supply module (20) is used to transport the urea in the urea tank body (10) to the surface equipment. The urea filling module (30) is used to inject urea into the urea tank body (10). The urea tank body (10) is provided with a back plate (40). The back plate (40) is used to connect with the vehicle chassis. The urea tank body (10) and the back plate (40) are integrally injection molded.

2. The urea tank according to claim 1, characterized in that, The urea tank body (10) and the back plate (40) are made of nylon and glass fiber.

3. The urea tank according to claim 1 or 2, characterized in that, The urea tank body (10) includes: The upper tank (11) is provided with the urea supply module (20) and the urea injection module (30) at its first end. The lower tank (12) is connected to the second end of the upper tank (11) by hot gas welding. The second end of the lower tank (12) forms the bottom end of the urea tank body (10). The bottom of the urea tank body (10) is provided with a drain port (121). A plug (50) is provided at the drain port (121). At least one of the upper tank (11) and the lower tank (12) is integrally provided with the back plate (40).

4. The urea tank according to claim 3, characterized in that, The back plate (40) includes a first mounting plate segment (41) and a second mounting plate segment (42). The first mounting plate segment (41) is integrally injection molded with the upper tank body (11), and the second mounting plate segment (42) is integrally injection molded with the lower tank body (12). The end of the first mounting plate segment (41) facing the lower tank body (12) and the end of the second mounting plate segment (42) facing the upper tank body (11) are connected by hot gas welding.

5. The urea tank according to claim 1 or 4, characterized in that, There are multiple back plates (40), and the multiple back plates (40) are arranged at intervals along the circumference of the urea tank body (10), forming an installation space between two adjacent back plates (40).

6. The urea tank according to claim 4, characterized in that, An annular connecting groove (110) is provided at the opening edge of the second end of the upper tank (11). The end of the first mounting plate segment (41) facing the opening side of the upper tank (11) is flush with the opening edge of the upper tank (11), and part of the annular connecting groove (110) is opened on the end face of the first mounting plate segment (41).

7. The urea tank according to claim 6, characterized in that, An annular connecting protrusion (122) is formed at the opening edge of the first end of the lower tank (12) to cooperate with the annular connecting groove (110), and part of the annular connecting protrusion (122) extends to the end face of the second mounting plate segment (42) facing the first mounting plate segment (41).

8. The urea tank according to claim 7, characterized in that, The outer wall of the annular connecting groove (110) protrudes from the outer circumferential surface of the upper tank (11), and a connecting flange (123) is formed on the outer side of the annular connecting protrusion (122). The height of the connecting flange (123) is lower than the height of the annular connecting protrusion (122). After the upper tank (11) and the lower tank (12) are connected by hot gas welding, the outer wall of the annular connecting groove (110) is connected to the connecting flange (123) and forms an envelope reinforcing rib extending circumferentially along the upper tank (11) and the lower tank (12) at the connection between the upper tank (11) and the lower tank (12).

9. The urea tank according to claim 1, characterized in that, The urea filling module (30) is connected to the urea tank body (10) by stainless steel bolts, and / or the urea filling module (30) is threadedly connected to the urea tank body (10).

10. A vehicle, characterized in that, The vehicle has a urea tank, which is the urea tank according to any one of claims 1-9.

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