Oil return base and vehicle

Abstract

The present application discloses an oil return base and a vehicle. The oil return base includes a shell and a one-way valve arranged on the shell. An oil collecting chamber connected to the one-way valve is formed on the shell. At least part of the one-way valve is located inside the shell. The present application arranges part of the one-way valve inside the shell, so that under low temperature conditions, the shell can block cold wind for the one-way valve, and the oil collecting chamber can keep the one-way valve warm, thereby preventing the oil from emulsifying and freezing at the valve position.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an oil return base and a vehicle. Background Art

[0002] The combustion products of the engine contain a lot of water vapor, which causes the oil-gas mixture in the tortuosity system to also contain a lot of water. The engine oil after the oil-gas mixture is separated by the oil-gas separator will also contain a certain amount of water.

[0003] In winter, when the temperature is low, the oil separated by the oil-gas separator will be emulsified and frozen during the transfer to the oil return base. Especially in the valve structure of the pipeline, the emulsification and freezing of the oil will occur frequently. This phenomenon will affect the normal operation of the Qutong system. Summary of the invention

[0004] The purpose of the present application is to provide an oil return base and a vehicle that can prevent the emulsification and freezing of engine oil.

[0005] The present application discloses an oil return base, which comprises a shell and a one-way valve arranged on the shell; an oil collecting chamber connected to the one-way valve is formed on the shell; at least part of the one-way valve is located inside the shell.

[0006] Optionally, the oil return base further includes a heating module, and the heating module is used to heat the one-way valve.

[0007] Optionally, the other end of the joint short pipe and the one-way valve are both located on the inner side of the shell; the heating module includes an injection pipeline arranged on the shell, and a main oil channel interface is provided at one end of the injection pipeline close to the outer side of the shell, and one end of the injection pipeline close to the inner side of the shell is connected to the oil collecting chamber and is arranged toward the one-way valve.

[0008] Optionally, the oil injection pipeline includes at least one injection oil circuit connected to the oil collecting chamber; each of the injection oil circuits is provided with an injection port located in the oil collecting chamber.

[0009] Optionally, the plurality of injection ports are all arranged toward the one-way valve and form different injection angles.

[0010] Optionally, the width of the main oil channel interface is greater than the width of the injection oil channel.

[0011] Optionally, the injection oil circuit includes a first injection oil circuit and a second injection oil circuit; the first injection oil circuit is colinear with the main oil channel interface.

[0012] Optionally, the second oil injection circuit includes a guide section that is offset from the main oil channel interface by a certain angle and an injection section that is perpendicular to the guide section.

[0013] Optionally, the diameter of the injection section near the oil collecting chamber is smaller than the diameter of the injection section far from the oil collecting chamber.

[0014] Optionally, the one-way valve is located on the inner side of the shell; the heating module includes a heating chamber arranged in the shell, the heating chamber is arranged around the one-way valve, and the heating chamber has a fluid inlet and a fluid outlet arranged on the outer surface of the shell.

[0015] Optionally, the heating chamber covers a portion of the valve core in the radial direction of the one-way valve.

[0016] Optionally, the shell has a greater thickness at the location of the heating chamber.

[0017] Optionally, the heating module includes an electric heating device arranged around the one-way valve.

[0018] Optionally, the electric heating device includes a heating portion attached to the one-way valve and an electrical connection portion for connecting to a power source.

[0019] Optionally, the one-way valve is partially located outside the shell; the electric heating device is arranged outside the shell; a recessed portion is provided on the circumference of the one-way valve, and the heating portion is arranged in the recessed portion.

[0020] Optionally, the one-way valve includes a valve core; and the heating portion covers a portion of the valve core in a radial direction of the one-way valve.

[0021] Optionally, the one-way valve includes an upper valve body and a lower valve body; the upper valve body and the lower valve body partially overlap in the radial direction of the one-way valve; and the heating part covers a portion of the overlapping section of the upper valve body and the lower valve body in the radial direction of the one-way valve.

[0022] Optionally, the one-way valve includes an extension portion, a fixing portion that fits the extension portion is provided in the shell, and the extension portion and the fixing portion are connected by a fastener.

[0023] The present application also discloses a vehicle, which comprises the above-mentioned oil return base.

[0024] Optionally, the vehicle further comprises an oil-gas separator, which is arranged above the oil return base and has an oil outlet at the bottom; the one-way valve is arranged above the oil return base; and the one-way valve is located below the oil outlet.

[0025] Compared with the related art, the present application arranges the one-way valve part inside the shell, so that under low temperature conditions, the shell can block the cold wind for the one-way valve, and at the same time the oil collecting chamber can insulate the one-way valve, thereby preventing the engine oil from emulsifying, freezing, etc. at the valve position.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0028] Figure 1 This is a schematic diagram of the structure of the oil return base in one embodiment of the present application.

[0029] Figure 2 For along Figure 1 Schematic diagram of the cross-section along line AA.

[0030] Figure 3 For along Figure 2 Schematic cross-sectional view along line BB.

[0031] Figure 4 For along Figure 3 Schematic cross-sectional view of the CC line.

[0032] Figure 5 This is a schematic structural diagram of an oil return base in another embodiment of the present application.

[0033] Figure 6 For along Figure 5 Schematic cross-sectional view of the DD line.

[0034] Figure 7 For along Figure 6 Schematic cross-sectional view along line EE.

[0035] Figure 8 For along Figure 7 Schematic cross-sectional view of the FF line.

[0036] Fig. 9 This is a schematic structural diagram of an oil return base in another embodiment of the present application.

[0037] Fig.10 For along Fig. 9 Schematic cross-sectional view of the GG line.

[0038] Fig.11 For along Fig.10 Schematic cross-sectional view along the HH line.

[0039] Fig.12For along Fig.11 Schematic cross-sectional view of the middle II line.

[0040] Fig.13 for Fig.10 Schematic diagram of the structure of the mid-return oil joint and the electric heating device.

[0041] Fig.14 For along Fig.13 Schematic cross-sectional view of the JJ line. DETAILED DESCRIPTION

[0042] Here, the technical solutions in the embodiments (or "implementation methods") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0043] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0044] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the present application provides an oil return base, which includes a housing 100 and a one-way valve 220 .

[0045] The housing 100 has an oil collecting chamber 110. The housing 100 is provided with an oil inlet channel 120 and an oil outlet channel 130 which are connected to the oil collecting chamber 110. The oil collecting chamber 110 is connected to the outside through the oil inlet channel 120 and the oil outlet channel 130. A mounting portion 150 is provided on one side of the housing 100, and a plurality of mounting holes 151 are provided on the mounting portion 150. The housing 100 is fixed in the vehicle through the mounting holes 151.

[0046] The bottom of the oil collecting chamber 110 is tilted, with one side higher than the other side. The oil outlet channel 130 is disposed on the lower side of the oil collecting chamber 110. In this way, the oil entering the oil collecting chamber 110 from the oil inlet channel 120 will not accumulate on the lower side of the housing 100, but will be led out through the oil outlet channel 130.

[0047] The one-way valve 220 is disposed in the housing 100. Specifically, at least part of the one-way valve 220 is located inside the housing 100. When the one-way valve 220 is completely located inside the housing 100, the external pipeline can be connected to the one-way valve 220 through an internal thread or an internal clamping form.

[0048] Optionally, an oil return joint 200 may be provided on the housing 100. Specifically, the oil return joint 200 is provided at the oil inlet channel 120 and / or the oil outlet channel 130. The oil return joint 200 is used to control the conduction status of the oil inlet channel 120 and / or the oil outlet channel 130. In the embodiment of the present application, the oil return joint 200 is provided at the oil inlet channel 120 as an example for explanation.

[0049] The oil return joint 200 may include a short pipe 210 and a one-way valve 220. One end of the joint short pipe 210 is located outside the housing 100, and the other end of the joint short pipe 210 is connected to the oil collecting chamber 110 through the one-way valve 220. The one-way valve 220 allows the fluid to enter the oil collecting chamber 110 only from the outside of the housing 100 through the oil inlet channel 120, while the fluid in the oil collecting chamber 110 cannot flow out through the oil inlet channel 120. At least part of the one-way valve 220 is located inside the housing 100.

[0050] like Figure 4 As shown, in an optional embodiment, a fixing portion 140 is provided in the housing 100, and the fixing portion 140 extends from the position of the oil inlet channel 120 to the inside of the housing 100, and leaves a channel opening of the oil inlet channel 120. The one-way valve 220 includes a valve body 221 and a valve core 222. The valve body 221 includes an extension portion 2212, and the extension portion 2212 extends from the valve body 221 in a direction away from the valve core 222. The extension portion 2212 fits the fixing portion 140, and the extension portion 2212 and the fixing portion 140 are fixed by a fastener 2213.

[0051] like Fig.12 As shown, in an optional embodiment, the one-way valve 220 includes a valve body 221 and a valve core 222. A threaded structure (not shown) is provided on the periphery of the valve body 221. A threaded structure (not shown) is also provided on the inner wall of the oil inlet channel 120. The valve body 221 is fixed to the oil inlet channel 120 through the threaded structure.

[0052] The present application sets the one-way valve 220 at least partially in the shell 100, so that under low temperature conditions, the shell 100 can block cold wind for the one-way valve 220, and at the same time the oil collecting chamber 110 can keep the one-way valve 220 warm, thereby preventing the engine oil from emulsifying, freezing, etc. at the valve position.

[0053] like Figure 1 , Figure 7 and Fig. 9As shown, in an optional embodiment, the oil return base further includes a heating module 300, and the heating module 300 is used to heat the one-way valve 220. This can further improve the effect of preventing the oil from emulsification and freezing; and because the one-way valve 220 is at least partially arranged in the housing 100, the heating effect of the heating module 300 on the one-way valve 220 is improved.

[0054] like Figures 1 to 4 As shown, in an optional embodiment, the heating module 300 can be an injection pipeline 310 disposed in the housing 100. One end of the joint short pipe 210 is located outside the housing 100, and the other end and the one-way valve 220 are both located inside the housing 100. The one-way valve 220 and the housing 100 are fixed by the extension portion 2212 and the fixing portion 140.

[0055] The end of the fuel injection line 310 close to the outside of the housing 100 is provided with a main oil channel interface 311, and the end of the fuel injection line 310 close to the inside of the housing 100 is connected to the oil collecting chamber 110 and is arranged toward the one-way valve 220. The main oil channel interface 311 is connected to the main oil channel of the engine. In a low temperature environment, the main oil channel interface 311 receives hot oil from the main oil channel of the engine (not shown) and injects the hot oil toward the one-way valve 220 through the fuel injection line 310.

[0056] Since the one-way valve 220 is located inside the housing 100, the hot oil can be directly sprayed to the one-way valve 220. Therefore, this method can quickly heat the one-way valve 220, and can also quickly heat the oil collecting chamber 110, so that the oil collecting chamber 110 has a better heat preservation effect. In addition, the oil in the main oil channel of the engine and the oil in the oil-gas separator received by the oil return base are the same oil, so the oil introduced through the oil injection pipeline 310 can also be received by the oil collecting chamber 110 and reused.

[0057] The fuel injection pipeline 310 includes at least one fuel injection circuit. In the embodiment of the present application, two fuel injection circuits are used as an example. In other optional embodiments, the fuel injection circuits may be one, three, or other numbers. The two fuel injection circuits are the first fuel injection circuit 312 and the second fuel injection circuit 313. The first fuel injection circuit 312 and the second fuel injection circuit 313 are both connected to the main fuel channel interface 311 and the oil collecting chamber 110.

[0058] The first injection oil circuit 312 and the second injection oil circuit 313 are both provided with injection ports 3121 at one end close to the oil collecting chamber 110. The injection ports 3121 of the first injection oil circuit 312 and the second injection oil circuit 313 are both arranged toward the one-way valve 220 and form different injection angles, that is, the first injection oil circuit 312 and the second injection oil circuit 313 will inject the hot engine oil to different positions of the one-way valve 220.

[0059] The width of the main oil channel interface 311 is greater than the width of the first injection oil channel 312 and the second injection oil channel 313. Specifically, the sum of the cross-sectional areas of the pipelines of the first injection oil channel 312 and the second injection oil channel 313 is smaller than the cross-sectional area of ​​the pipeline of the main oil channel interface 311. In this way, after the hot engine oil enters the first injection oil channel 312 and the second injection oil channel 313 from the main oil channel interface 311, the hot engine oil will be subjected to a higher pressure due to the narrowing of the pipeline, so that it can be better sprayed to the one-way valve 220. Optionally, the diameter of the first injection oil channel 312 and the second injection oil channel 313 can be gradually reduced from the main oil channel interface 311 to the oil collecting chamber 110, or reduced in a step-like manner.

[0060] The first injection oil path 312 is arranged in a colinear manner with the main oil channel interface 311, and the axis points to the check valve 220. The hot engine oil can form an injection path through the engine main oil channel, the main oil channel interface 311, the first injection oil path 312, the injection port 3121 and the check valve 220 in sequence.

[0061] The second injection oil circuit 313 includes a guide section 3131 and an injection section 3132. The guide section 3131 is offset from the main oil channel interface 311 by a certain angle, and the injection section 3132 is perpendicular to the guide section 3131, and the injection section 3132 is arranged to face the direction of the one-way valve 220. One end of the guide section 3131 is connected to the main oil channel interface 311, and the other end is connected to one end of the injection section 3132. The other end of the injection section 3132 is connected to the oil collecting chamber 110. The injection port 3121 is arranged at one end of the injection section 3132 close to the oil collecting chamber 110.

[0062] During the manufacturing process of the second injection oil circuit 313, it will directly penetrate from the outside of the housing 100 to the main oil channel interface 311 to form a guide section 3131, and will directly penetrate from the outside of the housing 100 to the oil collecting chamber 110 to form an injection section 3132. Therefore, plugs 3133 are provided at one end of the guide section 3131 away from the main oil channel interface 311 and one end of the injection section 3132 away from the oil collecting chamber 110 to isolate from the outside of the housing 100 to prevent oil leakage.

[0063] The diameters of the guide section 3131 and the injection section 3132 are both smaller than the main oil channel interface 311. Optionally, the diameter of the injection section 3132 near the oil collecting chamber 110 is smaller than the diameter of the portion away from the oil collecting chamber 110. The hot engine oil can form an injection path that passes through the engine main oil channel, the main oil channel interface 311, the guide section 3131, the injection section 3132, the injection port 3121 and the one-way valve 220 in sequence.

[0064] like Figure 5 , Figure 6 , Figure 7 as well as Figure 8As shown, in an optional embodiment, the heating module 300 can be a heating chamber 320 disposed in the housing 100. One end of the joint short pipe 210 is located outside the housing 100, and the other end and the one-way valve 220 are both located inside the housing 100. The one-way valve 220 and the housing 100 are fixed by the extension portion 2212 and the fixing portion 140.

[0065] The heating chamber 320 is arranged in the side wall of the housing 100, and the heating chamber 320 is arranged around the one-way valve 220. Specifically, the heating chamber 320 covers part of the valve core 222 in the radial direction of the one-way valve 220. In the one-way valve 220, the cross-sectional area of ​​the fluid channel at the valve core 222 is the smallest, that is, in a low temperature environment, the position of the valve core 222 is the position in the one-way valve 220 that is most likely to freeze. In this way, the heating chamber 320 can have a larger thermal contact surface with the one-way valve 220 to ensure that the valve core 222 is heated. Optionally, the housing 100 can be appropriately increased in thickness at the position where the oil return joint 200 is installed, so that there is more space to set the heating chamber. Since the heating chamber 320 is arranged in the wall of the housing 100, the wall thickness of the housing 100 is increased at the position of the heating chamber 320, so that the housing 100 has more space to set the heating chamber 320, thereby improving the heating effect of the heating chamber 320.

[0066] The heating chamber 320 has a fluid inlet 321 and a fluid outlet 322 disposed on the outer surface of the housing 100. The fluid inlet 321 and the fluid outlet 322 can be connected to a thermal management system in the vehicle. For example, they can be connected to a passenger compartment thermal management system, an engine thermal management system, or a thermal management system of other heating devices. The heating chamber 320 introduces a high-temperature fluid through the fluid inlet 321, heats the one-way valve 220 with the high-temperature fluid, and then returns the fluid to the thermal management system through the fluid outlet 322, thereby circulating.

[0067] The heating chamber 320 of the present application is integrated in the housing 100, and heat can be transferred between the heating chamber 320 and the one-way valve 220, thereby heating the one-way valve 220. In addition, since the heating chamber 320 is not connected to the oil collecting chamber 110, the fluid in the heating chamber 320 will not interfere with the oil collecting function of the oil collecting chamber 110 itself.

[0068] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 as well as Fig.14As shown, in an optional embodiment, the heating module 300 includes an electric heating device 330 arranged around the one-way valve 220. The electric heating device 330 includes a heating portion 331 and an electrical connection portion 332. The heating portion 331 is arranged around the one-way valve 220, and the electrical connection portion 332 connects the heating portion 331 with the power supply component of the vehicle body. The one-way valve 220 is partially located outside the housing 100 and partially located inside the housing 100. The electric heating device 330 is arranged outside the housing 100 and is arranged around the part of the one-way valve 220 located outside the housing 100.

[0069] In an optional embodiment, the one-way valve 220 includes an upper valve body 223, a lower valve body 224 and a valve core 222. The joint short tube 210 is integrated on the upper side of the upper valve body 223, and the joint short tube 210 can be integrally formed with the upper valve body 223. The upper valve body 223 and the lower valve body 224 can be snap-fitted or threadedly connected. When the upper valve body 223 and the lower valve body 224 are in a connected state, the upper valve body 223 and the lower valve body 224 partially overlap in the radial direction of the one-way valve 220. At the overlapping position, the lower valve body 224 is located on the outer side of the upper valve body 223.

[0070] The circumference of the lower valve body 224 is provided with a threaded structure (not shown), and the inner wall of the oil inlet passage 120 is also provided with a threaded structure (not shown). The lower valve body 224 is fixed to the oil inlet passage 120 by the threaded structure. The valve core 222 is located at the overlapping position of the upper valve body 223 and the lower valve body 224. When the valve body 221 is fixed to the oil inlet passage 120, the upper valve body 223 and the overlapping position of the upper valve body 223 and the lower valve body 224 are located outside the housing 100.

[0071] Optionally, the heating portion 331 covers a portion of the valve core 222 in the radial direction of the one-way valve 220 , or the heating portion 331 covers a portion of the overlapping section of the upper valve body 223 and the lower valve body 224 in the radial direction of the one-way valve 220 .

[0072] In the one-way valve 220, the cross-sectional area of ​​the fluid passage at the valve core 222 is the smallest, that is, in a low-temperature environment, the position of the valve core 222 is the position in the one-way valve 220 that is most likely to freeze. The heating portion 331 covers the valve core 222, and can quickly heat the position of the valve core 222 of the one-way valve 220, thereby preventing the occurrence of emulsification or freezing of the engine oil at the valve core 222. At the same time, the overlapping section of the upper valve body 223 and the lower valve body 224 is also a position of the one-way valve 220 with a lower temperature in a low-temperature environment. The heating portion 331 covering this position can also effectively prevent the occurrence of emulsification or freezing of the engine oil at the one-way valve 220.

[0073] Optionally, the lower valve body 224 is provided with a recessed portion 2211 surrounding the circumference thereof at a position overlapping with the upper valve body 223 , and the heating portion 331 is disposed in the recessed portion 2211 .

[0074] The one-way valve of the present application is at least partially arranged on the inner side of the shell, so that in a low-temperature environment, the shell can protect the one-way valve from wind, and the oil collecting chamber can also insulate the one-way valve. At the same time, the present application can perform fuel injection heating, heating chamber heating or electrical heating on the one-way valve to further prevent the oil from emulsifying or freezing. Moreover, the fuel injection heating, heating chamber heating and electrical heating structures disclosed in the present application can be used in combination. For example, the oil return base can be provided with a fuel injection pipeline and a heating chamber at the same time, or a fuel injection pipeline and an electric heating device at the same time, or a fuel injection pipeline, a heating chamber and an electric heating device at the same time, etc.

[0075] The present application also discloses a vehicle, which includes the above-mentioned oil return base, oil-gas separator and engine assembly. The oil-gas separator is arranged above the oil return base, and an oil outlet is arranged at the bottom of the oil-gas separator. The oil return joint is arranged above the oil return base, that is, the oil inlet channel is arranged above the oil return base. The oil return joint is located below the oil outlet of the oil-gas separator. With such an arrangement, the distance between the oil return joint and the oil outlet of the oil-gas separator is the shortest. When setting the connecting pipeline, the length of the pipeline between the oil return joint and the oil outlet of the oil-gas separator can be shortened to the maximum extent. At the same time, the pipeline between the oil return joint and the oil outlet of the oil-gas separator can be made without a bend section, thereby reducing the risk of oil accumulation in the pipeline.

[0076] The engine in the engine assembly may be a methanol engine, and the combustion products of the methanol engine generate more water vapor, which makes the engine oil more easily emulsified or frozen in a low temperature environment. The oil return base of the present application can better prevent the engine oil from emulsifying or freezing.

[0077] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. An oil return base, characterized in that: It includes a shell and a one-way valve arranged on the shell; an oil collecting chamber connected to the one-way valve is formed on the shell; the one-way valve is at least partially located on the inner side of the shell; the oil return base also includes a heating module, and the heating module is used to heat the one-way valve; the heating module includes an injection pipeline arranged on the shell, and the end of the injection pipeline close to the outer side of the shell is provided with a main oil channel interface, and the end of the injection pipeline close to the inner side of the shell is connected with the oil collecting chamber and is arranged toward the one-way valve; a mounting portion is provided on one side of the shell, and a plurality of mounting holes are provided on the mounting portion, and the shell is fixed in the vehicle through the mounting holes.

2. The oil return base according to claim 1, characterized in that: The oil injection pipeline includes at least one injection oil passage connected to the oil collecting chamber; each of the injection oil passages is provided with an injection port located in the oil collecting chamber.

3. The oil return base according to claim 2, characterized in that: The plurality of injection ports are all arranged toward the one-way valve and form different injection angles.

4. The oil return base according to claim 2, characterized in that: The width of the main oil channel interface is greater than the width of the injection oil channel.

5. The oil return base according to claim 2, characterized in that: The injection oil circuit includes a first injection oil circuit and a second injection oil circuit; the first injection oil circuit is colinear with the main oil channel interface.

6. The oil return base according to claim 5, characterized in that: The second oil injection passage comprises a guide section which is offset from the main oil passage interface by a certain angle and an injection section which is perpendicular to the guide section.

7. The oil return base according to claim 6, characterized in that: The diameter of the injection section near the oil collecting chamber is smaller than the diameter of the injection section far from the oil collecting chamber.

8. The oil return base according to claim 1, characterized in that: The heating module further comprises a heating chamber disposed in the shell, the heating chamber is disposed around the one-way valve, and the heating chamber has a fluid inlet and a fluid outlet disposed on the outer surface of the shell.

9. The oil return base according to claim 8, characterized in that: The heating chamber covers a portion of the valve core in the radial direction of the one-way valve.

10. The oil return base according to claim 8, characterized in that: The housing has a greater thickness at the location of the heating chamber.

11. The oil return base according to claim 1, characterized in that: The heating module also includes an electric heating device arranged around the one-way valve.

12. The oil return base according to claim 11, characterized in that: The electric heating device comprises a heating portion attached to the one-way valve and an electrical connection portion for connecting to a power source.

13. The oil return base according to claim 12, characterized in that: The one-way valve is partially located outside the shell; the electric heating device is arranged outside the shell; a recessed portion is arranged on the circumference of the one-way valve, and the heating portion is arranged in the recessed portion.

14. The oil return base according to claim 12, characterized in that: The one-way valve includes a valve core; the heating portion covers a portion of the valve core in a radial direction of the one-way valve.

15. The oil return base according to claim 12, characterized in that: The one-way valve comprises an upper valve body and a lower valve body; the upper valve body and the lower valve body partially overlap in the radial direction of the one-way valve; the heating portion covers a portion of the overlapping section of the upper valve body and the lower valve body in the radial direction of the one-way valve.

16. The oil return base according to claim 1, characterized in that: The one-way valve comprises an extension portion, a fixing portion fitted with the extension portion is arranged in the housing, and the extension portion and the fixing portion are connected via a fastener.

17. A vehicle, characterized in that: It comprises the oil return base as described in any one of claims 1-16.

18. The vehicle according to claim 17, characterized in that The vehicle further comprises an oil-gas separator, which is arranged above the oil return base, and an oil outlet is arranged at the bottom of the oil-gas separator; the one-way valve is located below the oil outlet.

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