Anti-suction mechanism, oil pan and oil pan anti-suction control method

Abstract

The present application belongs to the technical field of engine oil pan, and discloses a suction-preventing mechanism, an oil pan and a control method for preventing the oil pan from being sucked, the suction-preventing mechanism is arranged in an oil storage cavity of an oil pan shell, an oil intercepting baffle is arranged on the cavity wall of the oil storage cavity and is used for separating the oil storage cavity into a first cavity and a second cavity, so that the oil pan is prevented from surging in one direction when the vehicle is accelerating or braking; an oil collector is arranged in the first cavity, the oil intercepting baffle has an opening for communicating the first cavity and the second cavity, an oil control plate is capable of moving relative to the oil intercepting baffle to open or close the opening, a driving member is used for driving the oil control plate to move relative to the oil intercepting baffle, so as to drive the oil control plate to open or close the opening, when the liquid level in the first cavity is low, the oil control plate is driven to move by the driving member to open the opening, so as to automatically adjust the liquid level of the oil in the first cavity, and the liquid level of the oil in the first cavity can still be adjusted under the extreme condition that the vehicle is inclined for a long time.

Description

Technical Field

[0001] This invention relates to the field of engine oil pan technology, and more particularly to an anti-vacuum mechanism, an oil pan, and an oil pan anti-vacuum control method. Background Technology

[0002] The engine oil pan is used to store lubricating oil. To prevent the oil from flowing in one direction due to inertial force when the vehicle accelerates or brakes, a baffle is usually installed in the oil pan. In some existing designs, the two cavities on both sides of the baffle are always connected. When the vehicle brakes suddenly, accelerates, or tilts, the oil may flow away from the oil collector, causing the oil collector to be unable to draw oil properly, resulting in air suction.

[0003] To address this, existing technology provides an anti-tilt cavitation oil pan housing. This housing has holes below a baffle for oil passage. The baffle is tilted towards the cavity on the oil collector side and has a rotatable movable plate. When the vehicle is driving normally on level ground, the baffle tilts, and the movable plate hangs down naturally, allowing oil to flow normally through the holes. When the vehicle is tilted and the cavity near the oil collector is higher, the baffle is perpendicular to the horizontal plane. At this time, the movable plate is in contact with the baffle to prevent oil from flowing through, thus preventing the oil level on one side of the oil pan from becoming too low and preventing cavitation. However, a problem exists: when the vehicle is tilted for an extended period, the oil in the cavity near the oil collector is continuously consumed, causing the oil level in that cavity to drop. Furthermore, the movable plate remains in contact with the baffle under gravity and cannot automatically open the holes to allow oil to flow back, still posing a risk of cavitation. Summary of the Invention

[0004] According to one aspect of the present invention, the present invention provides an anti-vacuum mechanism, which can drive the oil control plate to move through a drive member to open the opening, thereby realizing automatic adjustment of the oil level in the first chamber, and can adjust the oil level in the first chamber under extreme conditions of long-term vehicle tilt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-vacuum mechanism is installed in the oil storage chamber of the oil pan housing, the oil storage chamber being used to store engine oil, and the oil pan housing being provided with an oil collector for drawing in engine oil;

[0007] include:

[0008] An oil-cutting baffle is disposed on the cavity wall of the oil storage chamber and is used to divide the oil storage chamber into a first cavity and a second cavity. The oil collector is located in the first cavity. The oil-cutting baffle has an opening for connecting the first cavity and the second cavity.

[0009] The oil control plate is movable relative to the oil-cutting baffle to open or close the opening;

[0010] A driving component is used to drive the oil control plate to move relative to the oil cut-off baffle.

[0011] As a preferred embodiment of the anti-vacuum mechanism, the oil control plate can move to different positions relative to the oil cut-off baffle so that the opening has different oil flow rates.

[0012] As a preferred embodiment of the anti-vacuum mechanism, the oil control plate is rotatably mounted on the oil-stopping baffle, and the driving component includes a driving motor mounted on the oil-stopping baffle, the driving motor being used to drive the oil control plate to rotate relative to the oil-stopping baffle.

[0013] As a preferred embodiment of the anti-vacuum mechanism, the driving component further includes a driving block connected to the output end of the driving motor. The driving block is connected to the oil control plate. The driving block has a driving block body and a protrusion protruding from the outer wall of the driving block body. The driving block can rotate relative to the oil-stopping baffle to have an open position and a closed position. When the driving block is in the open position, the protrusion abuts against the oil control plate to open the opening. When the driving block is in the closed position, the outer wall of the driving block body is directly opposite the oil control plate, and the oil control plate can rotate freely relative to the oil-stopping baffle.

[0014] As a preferred embodiment of the anti-vacuum mechanism, two oil control plates are provided, both of which are rotatably mounted on the oil-cutting baffle. The drive motor can simultaneously drive both oil control plates to rotate relative to the oil-cutting baffle.

[0015] As a preferred embodiment of the anti-vacuum mechanism, the oil-blocking baffle includes a first plate disposed on the bottom wall of the oil storage cavity and a second plate connected to the first plate. The second plate is located above the first plate and is in contact with the side wall of the oil storage cavity. The opening is disposed on the first plate, and the second plate is inclined toward the second cavity.

[0016] According to another aspect of the invention, an oil pan is provided, including the aforementioned anti-vacuum mechanism, and further comprising:

[0017] The oil pan housing has an oil reservoir for storing engine oil, and the anti-vacuum mechanism is disposed in the oil reservoir.

[0018] An oil collector is disposed in the oil pan housing and located in the first cavity; the oil collector is used to draw oil.

[0019] As a preferred embodiment of the oil pan, it also includes a level sensor disposed in the first cavity, the level sensor being used to detect the oil level height in the first cavity.

[0020] According to another aspect of the present invention, an oil pan anti-vacuum control method is provided, wherein, implemented by the aforementioned oil pan, the oil control plate can move to different positions relative to the oil cut-off baffle so that the opening has different oil flow rates;

[0021] The oil pan anti-air suction control method includes:

[0022] S100: Obtain the oil level in the first cavity;

[0023] S200: Determine that the oil level in the first cavity is lower than the height threshold;

[0024] S300: Calculate the difference between the height threshold and the oil level in the first cavity;

[0025] S400: Control the drive unit to drive the oil control plate to move, and control the oil flow rate of the opening based on the difference.

[0026] As a preferred embodiment of the oil pan anti-air suction control method, the oil control plate is rotatably mounted on the oil cut-off baffle, and the oil control plate can rotate at different angles relative to the oil cut-off baffle so that the opening has different oil flow rates.

[0027] In step S400, controlling the oil flow rate of the opening based on the difference includes:

[0028] S4001: Obtain the mapping relationship between the difference and the target rotation angle of the oil control plate;

[0029] S4002: Based on the difference, the target rotation angle of the oil control plate is obtained through the mapping relationship between the difference and the target rotation angle of the oil control plate;

[0030] S4003: Control the oil control plate to rotate, and the minimum rotation angle is the target rotation angle.

[0031] The beneficial effects of this invention are:

[0032] This invention provides an anti-cavitation mechanism, which is installed in the oil storage chamber of the oil pan housing. An oil baffle is disposed on the cavity wall of the oil storage chamber and serves to divide the oil storage chamber into a first chamber and a second chamber, thereby preventing the oil from surging in one direction when the vehicle accelerates or brakes. An oil collector is located in the first chamber. The oil baffle has an opening for connecting the first chamber and the second chamber. An oil control plate can move relative to the oil baffle to open or close the opening. A driving member is used to drive the oil control plate to move relative to the oil baffle, thereby driving the oil control plate to open or close the opening. When the oil level in the first chamber is low, the driving member can drive the oil control plate to open the opening, realizing automatic adjustment of the oil level in the first chamber. Even under extreme conditions of prolonged vehicle tilt, the oil level in the first chamber can still be adjusted to prevent cavitation.

[0033] The present invention also provides an oil pan, including the above-mentioned anti-vacuum mechanism, which can drive the oil control plate to move through the drive component to open the opening, thereby realizing automatic adjustment of the oil level in the first chamber, and can adjust the oil level in the first chamber under extreme conditions of long-term vehicle tilt.

[0034] This invention also provides an anti-vacuum control method, implemented through the aforementioned oil pan. In this method, the oil level in the first chamber is obtained, and it is determined that the oil level is below a height threshold. The difference between the height threshold and the oil level in the first chamber is calculated, and then the driving component is controlled to move the oil control plate to open the opening, thereby achieving automatic adjustment of the oil level in the first chamber. Furthermore, when controlling the driving component to move the oil control plate, the oil flow rate through the opening is controlled based on the difference. The oil flow rate through the opening can be controlled according to the oil level in the first chamber, and the oil return rate can be controlled according to the amount of oil in the first chamber. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the oil pan structure in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the anti-air suction mechanism in an embodiment of the present invention. Figure 1 ;

[0037] Figure 3 This is a schematic diagram of the anti-air suction mechanism in an embodiment of the present invention. Figure 2 ;

[0038] Figure 4 This is a partial structural schematic diagram of the anti-air suction mechanism in an embodiment of the present invention;

[0039] Figure 5 This is a flowchart of the anti-air suction control method in an embodiment of the present invention.

[0040] In the picture:

[0041] 100. Oil pan housing; 101. Oil reservoir; 1011. First chamber; 1012. Second chamber;

[0042] 200. Oil collector;

[0043] 300. Liquid level sensor;

[0044] 1. Oil cut-off baffle; 11. Opening; 12. First plate; 13. Second plate; 14. Third plate; 15. Limiting block; 16. Cylindrical pin;

[0045] 2. Oil control plate;

[0046] 3. Driving component; 31. Drive motor; 32. Driving block; 321. Driving block body; 322. Protrusion; 33. Mounting ear. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] To prevent the oil from surging in one direction due to inertial force during acceleration or braking, an oil pan typically contains a baffle. Existing technology provides an anti-tilt cavitation oil pan housing with holes below the baffle for oil passage. The baffle is tilted towards the cavity on the oil collector side and has a rotatable movable plate. When the vehicle is driving normally on level ground, the baffle tilts, the movable plate hangs down naturally, and oil can flow normally through the holes. When the vehicle is tilted and the cavity near the oil collector is higher, the baffle is perpendicular to the horizontal plane, and the movable plate fits against the baffle to prevent oil from flowing through, thus preventing the oil level on one side of the oil pan from becoming too low and preventing cavitation. However, a problem exists: when the vehicle is tilted for a long time, the oil in the cavity near the oil collector is continuously consumed, and the oil level in that cavity continues to drop. Furthermore, the movable plate remains fitted to the baffle under gravity and cannot automatically open the holes to allow oil to flow back, still posing a risk of cavitation.

[0052] To address the aforementioned problems, this embodiment provides an anti-air suction mechanism, as described above. Figure 1 An anti-air suction mechanism is installed in the oil storage chamber 101 of the oil pan housing 100. The oil storage chamber 101 is used to store engine oil. The oil pan housing 100 is provided with an oil collector 200 for absorbing engine oil.

[0053] Reference Figures 1-4The anti-vacuum mechanism includes an oil-stopping baffle 1, an oil-controlling plate 2, and a driving member 3. The oil-stopping baffle 1 is disposed on the cavity wall of the oil storage chamber 101 and is used to divide the oil storage chamber 101 into a first chamber 1011 and a second chamber 1012. The oil-stopping baffle 1 prevents the oil from surging in one direction when the vehicle accelerates or brakes. The oil collector 200 is located in the first chamber 1011. The oil-stopping baffle 1 has an opening 11 for connecting the first chamber 1011 and the second chamber 1012. The oil-controlling plate 2 can move relative to the oil-stopping baffle 1 to open or close the opening 11. The driving member 3 is used to drive the oil-controlling plate 2 to move relative to the oil-stopping baffle 1, thereby driving the oil-controlling plate 2 to open or close the opening 11. When a vehicle travels on an inclined road, the height of the first chamber 1011 may be higher than that of the second chamber 1012. In this case, oil in the first chamber 1011 may enter the second chamber 1012 through the opening 11 or above the oil baffle 1. When the oil levels in both chambers are equal, the oil collector 200 in the first chamber 1011 continuously draws in oil, causing the oil level in the first chamber 1011 to drop. When the oil level in the first chamber 1011 is lower than that in the second chamber 1012, the driving component 3 drives the oil control plate 2 to open the opening 11, thus automatically adjusting the oil levels in both chambers 1011 and 1012. Even under extreme conditions of prolonged vehicle inclination, the oil level in the first chamber 1011 can still be adjusted to prevent cavitation.

[0054] Continue to refer to Figures 1-4 The oil control plate 2 can move to different positions relative to the oil cut-off baffle 1 to change the oil flow through the opening 11, that is, to change the opening degree of the opening 11. Thus, the oil control plate 2 can be driven to move to different positions by the driving component 3 to change the oil flow through the opening 11, thereby realizing the adjustment of the oil flow through the opening 11 to adapt to different liquid levels in the first chamber 1011.

[0055] Continue to refer to Figures 1-4 The oil control plate 2 is rotatably mounted on the oil cut-off baffle 1. The driving component 3 includes a drive motor 31 mounted on the oil cut-off baffle 1, which drives the oil control plate 2 to rotate relative to the oil cut-off baffle 1. The oil control plate 2 can rotate relative to the oil cut-off baffle 1 at different angles to allow different oil flow rates at the opening 11. The smaller the angle between the oil control plate 2 and the oil cut-off baffle 1, the less obstruction the oil flow is by the oil control plate 2, and the greater the oil flow rate at the opening 11. To improve control accuracy, the drive motor 31 in this embodiment is a stepper motor.

[0056] In other embodiments, the oil control plate 2 can also be slidably disposed on the oil cut-off baffle 1, and the drive motor 31 is used to drive the oil control plate 2 to slide relative to the oil cut-off baffle 1, which can also change the oil flow rate of the opening 11.

[0057] Continue to refer to Figures 1-4The driving component 3 also includes a driving block 32 connected to the output end of the driving motor 31. The driving block 32 is connected to the oil control plate 2. The driving block 32 has a driving block body 321 and a protrusion 322 protruding from the outer wall of the driving block body 321. The driving block 32 can rotate relative to the oil-stopping baffle 1 to have an open position and a closed position. When the driving block 32 is in the open position, the protrusion 322 abuts against the oil control plate 2 to open the opening 11, that is, to limit the oil control plate 2 so that the opening 11 is always in the open state. When the driving block 32 is in the closed position, the outer wall of the driving block body 321 is directly opposite the oil control plate 2, and the oil control plate 2 can rotate freely relative to the oil-stopping baffle 1. That is, the driving block 32 releases the limitation on the oil control plate 2, and the opening 11 automatically opens or closes according to the difference in liquid level on both sides. Optionally, there is an arc transition between the outer wall of the driving block body 321 and the protrusion 322 to make the movement of the oil control plate 2 smooth. In this embodiment, the drive motor 31 is fixedly mounted on the oil-stopping baffle 1, and the oil-stopping baffle 1 is provided with a mounting ear 33. The output end of the drive motor 31 is an output shaft, which rotates through the mounting ear 33.

[0058] Continue to refer to Figures 1-4 There are two oil control plates 2, both of which are rotatably mounted on the oil cut-off baffle 1. The drive motor 31 can simultaneously drive both oil control plates 2 to rotate relative to the oil cut-off baffle 1. Specifically, there are two drive blocks 32, both of which are mounted on the output shaft of the drive motor 31. Optionally, in order to ensure that the output shaft of the drive motor 31 rotates smoothly, two mounting ears 33 are also provided to prevent radial runout of the output shaft.

[0059] Continue to refer to Figures 1-4 The oil baffle 1 includes a first plate 12 disposed on the bottom wall of the oil storage chamber 101 and a second plate 13 connected to the first plate 12. The second plate 13 is located above the first plate 12 and fits against the side wall of the oil storage chamber 101. An opening 11 is provided in the first plate 12. The first plate 12 and the oil control plate 2 are hinged by a cylindrical pin 16. The second plate 13 is inclined toward the second chamber 1012. The second plate 13 is used to receive splashed oil from above and direct it to the first chamber 1011 where the oil collector 200 is installed.

[0060] Optionally, a third plate 14 is connected to both sides of the second plate 13. The third plate 14 is attached to the side wall of the oil storage cavity 101. The overall structure of the second plate 13 and the two third plates 14 is U-shaped, so that the second plate 13 can be stably set on the side wall of the oil storage cavity 101, preventing the position or angle of the second plate 13 from shifting.

[0061] Optionally, the drive block 32 is used to drive the oil control plate 2 toward the first cavity 1011 to open the opening 11. A limit block 15 is provided on the side of the second plate 12 near the first cavity 1011. The limit block 15 is used to limit the oil control plate 2 to prevent it from rotating too much. It can be understood that when the oil control plate 2 is perpendicular to the second plate 13, the oil flow rate of the opening 11 is the largest. The higher the oil flow rate, the more likely it is to be. Therefore, in this embodiment, the included angle between the oil control plate 2 and the second plate 13 is 90° as the maximum rotation angle of the oil control plate 2. Correspondingly, the cross section of the limit block 15 is a right triangle, with one right-angled side located on the second plate 12 and the other right-angled side used to limit the oil control plate 2.

[0062] Continue to refer to Figure 1 This embodiment also provides an oil pan, including the aforementioned anti-vacuum mechanism, an oil pan housing 100, and an oil collector 200. The oil pan housing 100 has an oil reservoir 101 for storing oil, and the anti-vacuum mechanism is disposed within the oil reservoir 101. The oil collector 200 is disposed within the oil pan housing 100 and located within the first cavity 1011, and is used to draw in oil. The anti-vacuum mechanism of this oil pan can drive the oil control plate 2 to move via the drive member 3 to open the opening 11, thereby achieving automatic adjustment of the oil level in the first cavity 1011, and can also adjust the oil level in the first cavity 1011 under extreme conditions of prolonged vehicle tilt.

[0063] Continue to refer to Figure 1 The oil pan also includes a level sensor 300 disposed in the first chamber 1011. The level sensor 300 is used to detect the oil level in the first chamber 1011 so that the controller can collect the level signal in the first chamber 1011 and the user can know the level in the first chamber 1011 in real time.

[0064] Reference Figure 5 This embodiment also provides an oil pan anti-vacuum control method. Through the above-mentioned oil pan implementation, the oil control plate 2 can move to different positions relative to the oil cut-off baffle 1 so that the opening 11 has different oil flow rates.

[0065] The oil pan anti-air suction control method includes the following steps.

[0066] S100: Obtain the oil level in the first chamber 1011.

[0067] The oil level in the first chamber 1011 can be obtained by the level sensor 300.

[0068] S200: Determine that the oil level in the first chamber 1011 is lower than the height threshold.

[0069] S300: Calculate the difference between the height threshold and the oil level in the first chamber 1011.

[0070] Prolonged vehicle tilting or other factors can cause the oil level in the first chamber 1011 to fall below the height threshold. In this case, the amount of oil in the first chamber 1011 is too low, which can easily lead to air suction. Therefore, it is necessary to adjust the oil level in the first chamber 1011.

[0071] S400: Control drive 3 to drive oil control plate 2 to move, and control the oil flow of opening 11 based on the difference.

[0072] When the oil level in the first chamber 1011 is lower than the height threshold, the oil control plate 2 is moved by the control drive 3 to open the opening 11, allowing the oil in the second chamber 1012 to flow back into the first chamber 1011. Simultaneously, during this process, the oil flow rate of the opening 11 is controlled based on the difference to adapt to different oil level heights. Specifically, when the oil level in the first chamber 1011 is high (i.e., the difference between the height threshold and the oil level in the first chamber 1011 is small), opening the opening 11 does not require increasing the oil flow rate to meet the actual requirements. When the oil level in the first chamber 1011 is low (i.e., the difference between the height threshold and the oil level in the first chamber 1011 is large), the oil flow rate of the opening 11 can be increased by the drive 3.

[0073] Specifically, the oil control plate 2 is rotatably mounted on the oil cut-off baffle 1. The oil control plate 2 can rotate at different angles relative to the oil cut-off baffle 1 so that the opening 11 has different oil flow rates.

[0074] In step S400, controlling the oil flow rate of the opening 11 based on the difference includes the following steps.

[0075] S4001: Obtain the mapping relationship between the difference and the target rotation angle of the oil control plate 2.

[0076] The mapping relationship between the difference and the target rotation angle of the oil control plate 2 can be a relationship diagram or mapping table between the two. This can be obtained through a large number of previous experiments and integrated into the controller.

[0077] S4002: Based on the difference, the target rotation angle of the oil control plate 2 is obtained through the mapping relationship between the difference and the target rotation angle of the oil control plate 2.

[0078] The target rotation angle of the oil control plate 2 corresponding to the difference can be found by mapping the difference to the target rotation angle of the oil control plate 2.

[0079] S4003: Control the oil control plate 2 to rotate, and the minimum rotation angle is the target rotation angle.

[0080] Understandably, when the driving component 3 is not driving the oil control plate 2, the oil control plate 2 is in a state of free rotation. The oil control plate 2 is limited by the limiting block 15 and the outer wall of the driving block body 321. When the vehicle is tilted, the oil control plate 2 will not be able to rotate toward the limiting block 15 due to its own weight, and thus will always be in contact with the outer wall of the driving block body 321, while closing the opening 11. After the driving component 3 drives the oil control plate 2 to rotate, the oil control plate 2 is limited by the limiting block 15 and the driving block 32. When the vehicle is tilted, the oil control plate 2 will not be able to rotate toward the limiting block 15 due to its own weight, and thus will always be in contact with the driving block 32. Therefore, by controlling the rotation angle of the oil control plate 2, the oil flow through the opening 11 can be controlled.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An anti-vacuum mechanism is provided in the oil storage chamber (101) of the oil pan housing (100), the oil storage chamber (101) is used to store oil, and the oil pan housing (100) is provided with an oil collector (200) for absorbing oil. Its features are, include: An oil-cutting baffle (1) is disposed on the cavity wall of the oil storage chamber (101) and is used to divide the oil storage chamber (101) into a first chamber (1011) and a second chamber (1012). The oil collector (200) is located in the first chamber (1011). The oil-cutting baffle (1) has an opening (11) for connecting the first chamber (1011) and the second chamber (1012). The oil control plate (2) is movable relative to the oil cut-off baffle (1) to open or close the opening (11). A driving component (3) is used to drive the oil control plate (2) to move relative to the oil cut-off baffle (1); The oil control plate (2) is rotatably mounted on the oil cut-off baffle (1), and the driving component (3) includes a driving motor (31) mounted on the oil cut-off baffle (1). The driving motor (31) is used to drive the oil control plate (2) to rotate relative to the oil cut-off baffle (1). The drive unit (3) further includes a drive block (32) connected to the output end of the drive motor (31). The drive block (32) is connected to the oil control plate (2). The drive block (32) has a drive block body (321) and a protrusion (322) protruding from the outer wall of the drive block body (321). The drive block (32) can rotate relative to the oil cut-off baffle (1) to have an open position and a closed position. When the drive block (32) is in the open position, the protrusion (322) abuts against the oil control plate (2) to open the opening (11). When the drive block (32) is in the closed position, the outer wall of the drive block body (321) is directly opposite the oil control plate (2), and the oil control plate (2) can rotate freely relative to the oil cut-off baffle (1).

2. The anti-vacuum mechanism according to claim 1, characterized in that, The oil control plate (2) can move to different positions relative to the oil cut-off baffle (1) so that the opening (11) has different oil flow rates.

3. The anti-vacuum mechanism according to claim 1, characterized in that, There are two oil control plates (2), and both oil control plates (2) are rotatably mounted on the oil cut-off baffle (1). The drive motor (31) can simultaneously drive the two oil control plates (2) to rotate relative to the oil cut-off baffle (1).

4. The anti-vacuum mechanism according to any one of claims 1-3, characterized in that, The oil-blocking baffle (1) includes a first plate (12) disposed on the bottom wall of the oil storage cavity (101) and a second plate (13) connected to the first plate (12). The second plate (13) is located above the first plate (12) and is in contact with the side wall of the oil storage cavity (101). The opening (11) is disposed on the first plate (12), and the second plate (13) is inclined toward the second cavity (1012).

5. An oil pan, characterized in that, Including the anti-air suction mechanism as described in any one of claims 1-4, further comprising: The oil pan housing (100) has an oil reservoir (101) for storing oil, and the anti-vacuum mechanism is disposed in the oil reservoir (101); An oil collector (200) is disposed in the oil pan housing (100) and located in the first cavity (1011). The oil collector (200) is used to draw oil.

6. The oil pan according to claim 5, characterized in that, It also includes a liquid level sensor (300) disposed in the first cavity (1011), the liquid level sensor (300) being used to detect the oil level in the first cavity (1011).

7. A method for preventing air suction in the oil pan, characterized in that, Implemented by the oil pan as described in claim 5 or 6, the oil control plate (2) can move to different positions relative to the oil cut-off baffle (1) so that the opening (11) has different oil flow rates; The oil pan anti-air suction control method includes: S100: Obtain the oil level in the first chamber (1011); S200: Determine that the oil level in the first cavity (1011) is lower than the height threshold; S300: Calculate the difference between the height threshold and the oil level in the first cavity (1011); S400: Control the drive unit (3) to drive the oil control plate (2) to move, and control the oil flow of the opening (11) based on the difference.

8. The oil pan anti-vacuum control method according to claim 7, characterized in that, The oil control plate (2) is rotatably mounted on the oil cut-off baffle (1). The oil control plate (2) can rotate at different angles relative to the oil cut-off baffle (1) so that the opening (11) has different oil flow rates. In step S400, controlling the oil flow rate of the opening (11) based on the difference includes: S4001: Obtain the mapping relationship between the difference and the target rotation angle of the oil control plate (2); S4002: Based on the difference, the target rotation angle of the oil control plate (2) is obtained through the mapping relationship between the difference and the target rotation angle of the oil control plate (2); S4003: Control the oil control plate (2) to rotate, and the minimum rotation angle is the target rotation angle.

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