Vehicle door drainage system, control method, and vehicle

Abstract

A vehicle door drainage system (100), comprising a controller (10), a first water level sensor (21), a first drainage pipe (31), and a first water pump (41). The first water level sensor (21) is connected to the controller (10); the controller (10) is used for collecting a wading state and wading information of the first water level sensor (21); the first drainage pipe (31) is configured to be arranged in a vehicle door; the first water pump (41) is arranged in the first drainage pipe (31); and when the wading depth collected by the first water level sensor (21) reaches a set value, the controller (10) controls the first water pump (41) to operate, so as to discharge water in the vehicle door to the outside of a vehicle by means of the first drainage pipe (31). The vehicle door drainage system (100) can implement effective dissipation and mitigation of an impact water pressure on the drain plug sealing and the vehicle door sealing during wading, such that the water pressure impact is lower than a sealing compression force, thereby guaranteeing sealing integrity during flotation, and facilitating sealing integrity during long-time flotation and wading working condition. Further provided are a control method for the vehicle door drainage system (100), and a vehicle.

Description

Door drainage system, control method and vehicle

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 2024106989073, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of vehicle parts manufacturing technology, and more specifically, to a door drainage system, control method, and vehicle. Background Technology

[0004] When a vehicle is submerged in water, maintaining normal vehicle operation and preventing water leakage at the vehicle's body seals are key performance indicators for water-floating seals. Currently, water-floating seals typically employ sealing methods such as plugging and door sealing to prevent water from entering the vehicle body. However, under strict requirements for wading depth and floating time, the water pressure continuously impacts the door seals, making existing technologies unsuitable for prolonged water-floating sealing and wading conditions. Technical solutions

[0005] One objective of this application is to provide a new technological solution for a vehicle door drainage system, control method, and vehicle, which can at least solve the problems of the prior art, such as the inability to perform floating water sealing and wading conditions for extended periods.

[0006] This application provides a vehicle door drainage system, including: a controller mounted on the vehicle body; a first water level sensor installed inside the vehicle door and connected to the controller, the controller being used to collect wading status and wading information from the first water level sensor; a first drainage pipe installed inside the vehicle door; and a first water pump installed inside the first drainage pipe; when the wading depth collected by the first water level sensor reaches a set value, the controller controls the first water pump to operate, discharging the water inside the vehicle door through the first drainage pipe to the outside of the vehicle.

[0007] In some embodiments, the door includes an outer door panel and an inner door panel, the outer door panel and the inner door panel are connected and define a door panel cavity, the first water level sensor, the first drainage pipe and the first water pump are disposed in the door panel cavity, the first water level sensor, the first drainage pipe and the first water pump constitute a first drainage system, and the first drainage pipe extends along the height direction of the door.

[0008] In some embodiments, the first drainage pipe is provided with a first water intake inlet and a first drain outlet, and the first drain outlet is provided with a first drain one-way valve.

[0009] In some embodiments, the first water level sensor is located at the bottom of the lifting structure inside the vehicle door.

[0010] In some embodiments, the height distance between the first water level sensor and the lifting structure is 45-50mm.

[0011] In some embodiments, the height distance between the first water inlet and the bottom of the first water level sensor is 10-20mm, and the height distance between the first drain outlet and the bottom of the door is 45-55mm.

[0012] In some embodiments, the door drainage system further includes:

[0013] The second water level sensor is installed on the outside of the threshold and is connected to the controller.

[0014] The second drainage pipe is installed inside the threshold, and the threshold is provided with a second water inlet. One end of the second drainage pipe is connected to the second water inlet, and the other end of the second drainage pipe is a second drain outlet. The second drain outlet is connected to the first water pump in the first drainage pipe to discharge water into the first drainage pipe. The second water level sensor and the second drainage pipe constitute a second drainage system.

[0015] In some embodiments, the second water level sensor is located at the bottom of the sheet metal stop of the door frame sealing strip.

[0016] In some embodiments, the height distance between the second water level sensor and the sheet metal stop of the vehicle body door frame sealing strip is 13-17mm, and the height distance between the second water inlet and the sheet metal stop of the vehicle body door frame sealing strip is 30-45mm.

[0017] In some embodiments, the door drainage system further includes:

[0018] The third water level sensor is installed on the inner floor of the vehicle sill and is connected to the controller.

[0019] The third drainage pipe is installed on the inner floor of the door sill vehicle. The third drainage pipe has a third water intake inlet and a third drain outlet. The third water intake inlet is connected to the water storage chamber in the inner floor of the door sill vehicle, and the third drain outlet is connected to the outside of the vehicle.

[0020] The second water pump is installed inside the third drainage pipe. The third water level sensor, the third drainage pipe, and the second water pump constitute the third drainage system.

[0021] In some embodiments, the door sill interior floor is provided with a water inlet, and a one-way water filter is provided at the water inlet.

[0022] In some embodiments, a second drain check valve is provided at the third drain outlet.

[0023] In some embodiments, the height distance between the third drain outlet and the sheet metal stop of the door frame sealing strip is 120-140mm.

[0024] This application provides a control method for a vehicle door drainage system, applied to the vehicle door drainage system described in the above embodiments. The control method includes:

[0025] When the controller detects that the vehicle is in the ON position, it determines whether the vehicle is in a water-wading state.

[0026] When it is determined that the vehicle is in a water-wading state, the water depth information of the first water level sensor is collected;

[0027] When the wading depth information collected by the first water level sensor reaches the wading position inside the door panel cavity, the controller controls the first water pump to work and perform drainage operations.

[0028] When the wading depth information collected by the first water level sensor is less than the wading position inside the door panel cavity, the controller controls the first water pump to stop working and exit the drainage mode.

[0029] In some embodiments, the control method for the door drainage system further includes:

[0030] When the wading depth information collected by the first water level sensor reaches the wading position inside the door panel cavity, the controller calculates the current required to drive the actuator based on the current required drainage volume.

[0031] The controller determines whether the current required at present reaches the stall current threshold of the motor in the first water pump. If it is less than or equal to the stall current threshold, it directly drives the actuator to perform the drainage action.

[0032] In some embodiments, the control method for the door drainage system further includes:

[0033] When the water depth information collected by the second water level sensor is found to be below the threshold and within the threshold sealing cavity, the controller controls the first water pump to operate and drain water through the second drainage pipe.

[0034] In some embodiments, the control method for the door drainage system further includes:

[0035] When the wading depth information collected by the third water level sensor is found to be below the threshold and within the wading area of ​​the vehicle body floor, the controller controls the second water pump to operate and drain water through the third drainage pipe.

[0036] This application provides a vehicle including the door drainage system described in the above embodiments.

[0037] The door drainage system of this application collects water wading information through a first water level sensor. When the water wading information is collected and the water wading position is reached, the controller controls the first water pump to work and discharge the water in the door through the first drainage pipe in a timely manner. This effectively dilutes and reduces the impact water pressure on the plug seal and door seal, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal performance, which is beneficial for long-term floating water seal and water wading conditions.

[0038] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0040] Figure 1 is a cross-sectional view of a door drainage system according to an embodiment of this application;

[0041] Figure 2 is another cross-sectional view of a door drainage system according to an embodiment of this application;

[0042] Figure 3 is a cross-sectional view of a first drainage system of a door drainage system according to an embodiment of the present application;

[0043] Figure 4 is a cross-sectional view of a second drainage system of a door drainage system according to an embodiment of the present application;

[0044] Figure 5 is a cross-sectional view of the third drainage system of the door drainage system according to an embodiment of the present application;

[0045] Figure 6 is a partial schematic diagram of the door frame strip of the vehicle door drainage system according to an embodiment of the present application;

[0046] Figure 7 is a control block diagram of a door drainage system according to an embodiment of the present application;

[0047] Figure 8 is a diagram illustrating the working steps of a door drainage system according to an embodiment of this application.

[0048] Figure label:

[0049] Door drainage system 100;

[0050] Controller 10;

[0051] Sensor 20; First water level sensor 21; Second water level sensor 22; Third water level sensor 23;

[0052] First drainage pipe 31; First water intake inlet 311; Second drainage pipe 32; Second water intake inlet 321; Third drainage pipe 33;

[0053] Variable frequency water pump 40; First water pump 41; Second water pump 42;

[0054] First drainage system 51; Second drainage system 52; Third drainage system 53;

[0055] First drain check valve 61; Second drain check valve 62; One-way filter screen 63;

[0056] 71. Door panel cavity; 72. Lifting structure; 73. Outer side of door sill; 74. Sheet metal stop of door frame sealing strip; 75. Door sill inner floor plate; 76. Door inner panel; 77. Door sill sheet metal; 78. Door frame strip. Detailed Implementation

[0057] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0058] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0059] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0060] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0062] In the specification and claims of this application, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0063] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0064] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0065] The door drainage system 100 according to an embodiment of this application is described in detail below with reference to the accompanying drawings.

[0066] As shown in Figures 1 to 3, the door drainage system 100 according to an embodiment of this application includes a controller 10, a first water level sensor 21, a first drainage pipe 31, and a first water pump 41.

[0067] The controller 10 is mounted on the vehicle body. A first water level sensor 21 is installed inside the vehicle door and is connected to the controller 10. The controller 10 collects wading information and data from the first water level sensor 21. A first drainage pipe 31 is installed inside the vehicle door. A first water pump 41 is installed inside the first drainage pipe 31. When the wading depth collected by the first water level sensor 21 reaches a set value, the controller 10 controls the first water pump 41 to operate, draining the water inside the vehicle door through the first drainage pipe.

[0068] In other words, referring to Figures 1 to 3, the door drainage system 100 according to an embodiment of this application mainly consists of a controller 10, a first water level sensor 21, a first drainage pipe 31, and a first water pump 41. The controller 10 can be installed on the vehicle body, located inside the vehicle, and interacts with the entire vehicle via a CAN bus. The controller 10 is mainly used to analyze and process signal requests from the door drainage system 100, collect the current status of each water level sensor via hardwired connection, and provide power output to the door drainage system 100. During the output process, it can detect the output signal source of each water level sensor to realize the drainage and stop drainage functions.

[0069] The first water level sensor 21 can be installed inside the vehicle door. The first water level sensor 21 is connected to the controller 10, which collects the vehicle's wading status and the wading information from the first water level sensor 21. The first drainage pipe 31 is installed inside the vehicle door. When the vehicle encounters wading conditions, water enters the door front through the sheet metal stop formed by the inner door panel 76 and the outer door panel, as well as process layout holes. The first water pump 41 is installed inside the first drainage pipe 31. When the wading depth collected by the first water level sensor 21 reaches a set value, the controller 10 controls the first water pump 41 to operate, draining the water inside the door through the first drainage pipe 31 to the outside of the vehicle. This effectively dilutes and reduces the impact water pressure on the door seal and the door seal, ensuring that the water pressure impact is less than the sealing pressure, guaranteeing the floating seal performance, which is beneficial for long-term floating seal and wading conditions. Therefore, when the water volume reaches the position of the first water level sensor 21, a sensing signal is triggered, the first water pump 41 starts working, and the wading water is discharged outside the door cavity.

[0070] Therefore, according to the embodiment of this application, the door drainage system 100 collects water wading information through the first water level sensor 21. When the collected water wading information reaches the water wading position, the controller 10 controls the first water pump 41 to work, and discharges the water in the door through the first drainage pipe 31 in a timely manner. This effectively dilutes and reduces the impact water pressure on the plug seal and door seal, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal performance, which is beneficial for long-term floating water seal and water wading conditions.

[0071] According to one embodiment of this application, the door includes an outer door panel and an inner door panel 76. The outer door panel and the inner door panel 76 are connected and define a door panel cavity 71. A first water level sensor 21, a first drainage pipe 31, and a first water pump 41 are disposed in the door panel cavity 71. The first water level sensor 21, the first drainage pipe 31, and the first water pump 41 constitute a first drainage system 51. The first drainage pipe 31 extends along the height direction of the door.

[0072] In other words, as shown in Figures 1 to 3, the car door is mainly composed of an outer door panel and an inner door panel 76. The outer door panel and the inner door panel 76 are connected and define the door panel cavity 71. A first water level sensor 21, a first drainage pipe 31, and a first water pump 41 are installed in the door panel cavity. The first water level sensor 21, the first drainage pipe 31, and the first water pump 41 constitute a first drainage system 51. The first drainage pipe 31 extends along the height direction of the car door. The extension of the first drainage pipe 31 inside the car door can be bent to facilitate the timely discharge of water from the door panel cavity 71 to the outside of the vehicle, diluting and reducing the impact water pressure on the plug seal and the door seal during wading, and improving the water-floating sealing performance.

[0073] According to one embodiment of this application, as shown in FIG3, the first drainage pipe 31 is provided with a first water intake inlet 311 and a first drainage outlet. A first drainage check valve 61 is provided on the first drainage outlet. The first drainage check valve 61 is designed to stop water flow and withstand water pressure ≥4900pa without leakage. The first water pump 41 is a variable frequency water pump 40, which can adjust its frequency power according to the sensing signal strength of the first water level sensor 21 to discharge water of different flow rates outside the vehicle.

[0074] In some embodiments of this application, the first water level sensor 21 is located at the bottom of the lifting structure inside the vehicle door. The height distance between the first water level sensor 21 and the lifting structure 72 is 45-50mm.

[0075] In other words, as shown in Figure 2, the first water level sensor 21 is located at the bottom of the lifting structure 72 inside the door, providing a drainage space below the lifting structure 72 in the door panel cavity 71. The lifting structure 72 is mainly used for raising and lowering the window glass. The height distance H1 between the first water level sensor 21 and the lifting structure 72 is 45-50mm, ensuring that the wading depth does not exceed the bottom position of the lifting structure 72.

[0076] In some embodiments of this application, the first water intake inlet 311 is located at the bottom of the first water level sensor 21. The height distance between the first water intake inlet 311 and the bottom of the first water level sensor 21 is 10-20mm, and the height distance between the first drain outlet and the bottom of the door is 45-55mm.

[0077] In other words, as shown in Figures 2 and 3, the first water intake inlet 311 can be installed at the bottom of the first water level sensor 21. The height distance H2 between the first water intake inlet 311 and the bottom of the first water level sensor 21 is approximately 10-20mm, and the height distance H3 between the first drain outlet and the bottom of the door is approximately 45-55mm. By arranging the water intake inlet pipe (first drain pipe 31) at a distance of 10mm to 20mm below the water level sensor and arranging the one-way valve drain outlet (first drain one-way valve 61) at a distance of 45mm to 55mm from the bottom of the inner panel of the door, a drainage system combination is formed. The first drain one-way valve 61 is designed to be watertight and resistant to water flushing pressure ≥4900pa without leakage. The variable frequency water pump 40 operates at variable frequency power according to the sensing signal strength of the water level sensor, draining water of different flow rates outside the vehicle.

[0078] According to one embodiment of this application, the door drainage system 100 further includes a second water level sensor 22 and a second drainage pipe 32. The second water level sensor 22 is disposed on the outside of the door sill 73 and is connected to the controller 10. The second drainage pipe 32 is disposed inside the door sill, and the door sill has a second water intake inlet 321. One end of the second drainage pipe 32 is connected to the second water intake inlet 321, and the other end of the second drainage pipe 32 is a second drain outlet, which is connected to the first water pump 41 in the first drainage pipe 31 to discharge water into the first drainage pipe 31. The second water level sensor 22 and the second drainage pipe 32 constitute a second drainage system 52.

[0079] In other words, as shown in Figures 1 and 4, the door drainage system 100 also includes a second water level sensor 22 and a second drainage pipe 32. The second water level sensor 22 is positioned on the outside of the door sill 73 and is connected to the controller 10. The second drainage pipe 32 is positioned inside the door sill, which has a second water intake inlet 321. One end of the second drainage pipe 32 is connected to the second water intake inlet 321, and the other end is a second drain outlet. This drain outlet is connected to the first water pump 41 in the first drainage pipe 31. Positioning the second drainage pipe 32 on the first water pump 41 forms an automatic drainage system, draining water into the first drainage pipe 31. The second water level sensor 22 and the second drainage pipe 32 constitute the second drainage system 52. The second water intake inlet 321 can be configured as a siphon unidirectional inlet to improve drainage efficiency. Siphon represents a pressure difference; unidirectional drainage can be achieved by setting a pressure difference at the drain outlet opening, with lower pressure when water flows outward and higher pressure when it flows inward. Of course, those skilled in the art can understand and implement the specific principles of siphoning, and will not elaborate further in this application.

[0080] In some embodiments of this application, the second water level sensor 22 is located at the bottom of the sheet metal stop 74 of the vehicle body door frame sealing strip. The height distance between the second water level sensor 22 and the sheet metal stop 74 of the vehicle body door frame sealing strip is 13-17mm, and the height distance between the second water inlet 321 and the sheet metal stop 74 of the vehicle body door frame sealing strip is 30-45mm.

[0081] In other words, as shown in Figure 2, the second water level sensor 22 is installed at the bottom of the sheet metal stop 74 of the body door frame sealing strip. The height distance H4 between the second water level sensor 22 and the sheet metal stop 74 of the body door frame sealing strip is 13-17mm, and the height distance H5 between the second water inlet 321 and the sheet metal stop 74 of the body door frame sealing strip is 30-45mm, ensuring that high-pressure water can flow to low-pressure areas. At the same time, by connecting the second drainage pipe 32 to the first water pump 41 in the first drainage pipe 31, an automatic drainage system is formed.

[0082] In this application, as shown in Figure 6, the interference amount L1 between the sealing section bubble of the door frame strip 78 and the sheet metal is set to 4-6.5mm, and the wall thickness L2 of the bubble is 1.8-2.2mm, which is similar to the interference amount of traditional door frame strips and car door strips. This reduces the rebound force acting on the door when opening and closing the door, which is conducive to maintaining good comfort when opening and closing the door.

[0083] According to one embodiment of this application, the door drainage system 100 further includes a third water level sensor 23, a third drainage pipe 33, and a second water pump 42.

[0084] In some embodiments, a third water level sensor 23 is installed on the inner floor 75 of the sill vehicle body and is connected to the controller 10. A third drainage pipe 33 is installed on the inner floor 75 of the sill vehicle body, and has a third water inlet and a third water outlet. The third water inlet communicates with a water storage chamber in the inner floor 75 of the sill vehicle body, and the third water outlet communicates with the outside of the vehicle. A second water pump 42 is installed inside the third drainage pipe 33. The third water level sensor 23, the third drainage pipe 33, and the second water pump 42 constitute a third drainage system 53.

[0085] In other words, as shown in Figures 1 and 5, the door drainage system 100 may further include a third water level sensor 23, a third drainage pipe 33, and a second water pump 42. The third water level sensor 23 is installed on the inner floor panel 75 of the door sill and is connected to the controller 10. The controller 10 can collect water immersion information from the third water level sensor 23. The third drainage pipe 33 is installed on the inner floor panel 75 of the door sill and has a third water intake inlet and a third water outlet. The third water intake inlet communicates with a water storage chamber in the inner floor panel 75, and the third water outlet communicates with the outside of the vehicle. The second water pump 42 is installed inside the third drainage pipe 33. The third water level sensor 23, the third drainage pipe 33, and the second water pump 42 constitute the third drainage system 53. When the controller 10 collects water immersion information from the third water level sensor 23, it controls the second water pump 42 to start working, draining water out of the vehicle through the third drainage pipe 33, maintaining a dry and clean floor inside the vehicle.

[0086] According to one embodiment of this application, as shown in Figure 5, a water inlet is provided on the inner floor plate 75 of the door sill, and a one-way water filter 63 is provided at the water inlet. This one-way water filter 63 can be an odor-proof backflow filter. The one-way water filter 63 introduces water into a water storage chamber within the door sill reinforcing beam cavity via a connecting pipe. A third water level sensor 23 is arranged within the cavity to detect the water level. When wading triggers the third water level sensor 23, a second water pump 42 arranged within the sheet metal starts working, draining water out of the vehicle through a third drainage pipe 33, maintaining a good dry and clean floor effect inside the vehicle.

[0087] According to one embodiment of this application, a second drain check valve 62 is provided at the third drain outlet. The second drain check valve 62 is designed to withstand water flushing pressure ≥4900pa to prevent water leakage.

[0088] According to one embodiment of this application, as shown in FIG2, the height distance between the third drain outlet and the sheet metal stop 74 of the door frame sealing strip is 120-140mm, which facilitates the arrangement of the second drain check valve 62 and the second water pump 42 to achieve effective drainage.

[0089] In this application, by designing a first drainage system 51, a second drainage system 52, and a third drainage system 53, and based on the wading information collected by the controller 10 from the first water level sensor 21, the second water level sensor 22, and the third water level sensor 23, the controller controls the first water pump 41 and / or the second water pump 42 to start working, thereby achieving effective drainage, timely discharge of water from the vehicle body, effectively diluting and reducing the impact water pressure on the plug seal and door seal during wading, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal performance, which is beneficial for long-term floating water sealing and wading conditions.

[0090] Of course, for those skilled in the art, the other structures and working principles of the door drainage system 100 are understandable and achievable, and will not be described in detail in this application.

[0091] According to a second aspect of this application, as shown in Figures 7 and 8, a control method for a vehicle door drainage system 100 is provided, applied to the vehicle door drainage system 100 in the above embodiments, the control method comprising:

[0092] When the controller 10 detects that the vehicle is in the ON position, it determines whether the vehicle is in a water-wading state.

[0093] When it is determined that the vehicle is in a water-wading state, the water depth information of the first water level sensor 21 is collected;

[0094] When the wading depth information collected by the first water level sensor 21 reaches the wading position inside the door panel cavity 71 of the vehicle door, the controller 10 controls the first water pump 41 to work and carry out drainage operations.

[0095] When the wading depth information collected by the first water level sensor 21 is less than the wading position inside the door panel cavity 71, the controller 10 controls the first water pump 41 to stop working and exit the drainage mode.

[0096] In other words, as shown in Figures 7 and 8, in the control method of the vehicle door drainage system 100 of this application, the controller 10 monitors the signal changes of the vehicle door drainage system 100. When the controller 10 detects that the vehicle is in the ON position, it determines whether the vehicle is in a wading state. When it determines that the vehicle is in a wading state, it collects the wading depth information of the first water level sensor 21. Then, when the wading depth information collected by the first water level sensor 21 reaches the wading position inside the door panel cavity 71, the controller 10 controls the first water pump 41 to work and perform drainage operations. And when the wading depth information collected by the first water level sensor 21 is less than the wading position inside the door panel cavity 71, the controller 10 controls the first water pump 41 to stop working and exit the drainage mode.

[0097] The controller 10 can be installed on the vehicle body, located inside the vehicle, and interacts with the entire vehicle via a CAN bus. The controller 10 is mainly used to analyze and process the signal requests of the door drainage system 100, collect the current status of each sensor 20 (including the first water level sensor 21, the second water level sensor 22, and the third water level sensor 2323) through hard wiring, and provide power output to the door drainage system 100. During the output process, the controller can detect the output signal source of each water level sensor to realize the functions of drainage and stopping drainage.

[0098] This application collects wading information through the first water level sensor 21. When the wading information is collected and the wading position is reached, the controller 10 controls the first water pump 41 to work, and discharges the water in the door through the first drainage pipe 31 in a timely manner. This effectively dilutes and reduces the impact water pressure on the plug seal and door seal, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal performance, which is beneficial for long-term floating water seal and wading conditions.

[0099] According to one embodiment of this application, the control method for the door drainage system 100 further includes:

[0100] When the wading depth information collected by the first water level sensor 21 reaches the wading position inside the door panel cavity 71 of the vehicle door, the controller 10 calculates the current required to drive the actuator based on the current required drainage volume.

[0101] The controller 10 determines whether the current required is at the stall current threshold of the motor in the first water pump 41. If it is less than or equal to the stall current threshold, it directly drives the actuator to perform the drainage action.

[0102] In other words, when the wading depth information collected by the first water level sensor 21 reaches the wading position inside the door panel cavity, the controller 10 can calculate the current ZA that needs to be driven by the actuator based on the current required drainage volume. Then, the controller 10 determines whether the current required ZA reaches the maximum stall current of the motor in the first water pump 41. If it is less than or equal to the maximum stall current, the controller 10 directly drives the actuator to perform the maximum drainage action.

[0103] According to one embodiment of this application, the control method for the door drainage system 100 further includes:

[0104] When the water depth information collected by the second water level sensor 22 is less than the water level of the threshold and the water level of the threshold sealing cavity is reached, the controller 10 controls the first water pump 41 to work and drain water through the second drainage pipe 32.

[0105] In other words, in the control method of the door drainage system 100, when the wading depth information of the second water level sensor 22 is collected and the water level does not exceed the threshold and enters the wading position of the threshold sealing cavity, the controller 10 controls the first water pump 41 to work and carry out drainage operation through the second drainage pipe 32, so as to discharge the water outside the threshold in time, effectively dilute and reduce the impact water pressure on the plug seal and door seal, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal, which is conducive to long-term floating water seal and wading conditions.

[0106] According to one embodiment of this application, the control method for the door drainage system 100 further includes:

[0107] When the wading depth information collected by the third water level sensor 23 is less than the threshold and the vehicle body floor is in the wading position, the controller 10 controls the second water pump 42 to work and drain water through the third drainage pipe 33.

[0108] In other words, in the control method of the vehicle door drainage system 100, when the wading depth information of the third water level sensor 23 is collected and the vehicle body floor is not in the wading position after passing the threshold, the controller 10 controls the second water pump 42 to work and drain water through the third drainage pipe 33 to discharge the water in the vehicle body floor in time, ensuring the floating water seal, which is beneficial for long-term floating water seal and wading conditions.

[0109] This application designs a logic control method to address the progressive hierarchical operation of the drainage system in each module. Multiple water level sensors (first water level sensor 21, second water level sensor 22, and third water level sensor 23) collect water level information during vehicle wading and trigger signals to the controller 10, which then issues execution signals. When water enters the door panel cavity 71, it triggers the first water level sensor 21, causing a certain flow of water to be discharged outside the vehicle through a pipe. When the wading position passes the door strip and enters the outer cavity of the door sill, the second water level sensor 22 triggers a signal, causing water in the door and body sealing strip cavity to be discharged outside the vehicle through a pipe. When the wading position exceeds the door sill and enters the vehicle body, water leaks from the floor filter into the water storage cavity. When the water in the storage cavity reaches the position of the third water level sensor 23, a trigger signal is issued to discharge the water from the cavity outside the vehicle.

[0110] As shown in Figure 8, the actual processing flow of the control method for the door drainage system 100 in this application is as follows:

[0111] S01: Controller 10 monitors signal changes within the door drainage system 100.

[0112] S02: If the controller 10 detects that the vehicle is in the ON position, it determines whether the vehicle is currently in a water-wading state. If it is in a water-wading state, it further collects the current water level sensor signal information.

[0113] S03: When the controller 10 detects that the vehicle is currently in a wading state, it collects the current wading depth information. The wading depth is distinguished as follows: X1: the wading position inside the door panel cavity; X2: the water level is above the threshold and enters the threshold sealing cavity; X3: the water level is below the threshold and enters the driver's cabin, the vehicle floor, and the vehicle is infiltrated. There is a certain water pressure outside the vehicle.

[0114] S04: Controller 10 calculates the current ZA required to drive the actuator based on the current required drainage volume.

[0115] S05: Controller 10 determines whether the current required ZA has reached the maximum stall current of the motor. If it is less than or equal to the maximum stall current, it directly drives the actuator to perform the maximum water drainage action.

[0116] S06: Controller 10 drives the water pump motor to work, and the drainage system performs drainage operations as the actuator sends a signal.

[0117] S07: Controller 10 detects sensor signals and issues automatic drainage commands to carry out drainage operations for different wading depths.

[0118] S08: Controller 10 stops driving the current action, maintains the current position of the motor, and performs a braking action.

[0119] S09: Controller 10 collects the current wading status and the power status of the vehicle. If the current wading depth of the vehicle is less than X1 or the vehicle is out of the ON position, the vehicle exits the drainage mode.

[0120] S10: Controller 10 drives the drainage actuator to perform a reset action, and after the reset is completed, the electrolysis function is restored.

[0121] In summary, the control method of the vehicle door drainage system 100 of this application, when the wading information is collected and the wading position is reached, the controller 10 controls the corresponding water pump to work, so as to discharge the water in the vehicle door in time, effectively dilute and reduce the impact water pressure on the plug seal and the vehicle door seal, so that the water pressure impact is less than the sealing extrusion force, ensuring the floating water seal, which is beneficial for long-term floating water seal and wading conditions.

[0122] According to a third aspect of this application, a vehicle is provided, including the door drainage system 100 in the above embodiments. Since the door drainage system 100 according to the embodiments of this application has the aforementioned technical effects, the vehicle according to the embodiments of this application should also have corresponding technical effects. That is, the vehicle of this application, using the door drainage system 100, can effectively dilute and reduce the impact water pressure on the cap seal and door seal during wading, making the water pressure impact less than the sealing extrusion force, ensuring floating water sealing performance, and facilitating long-term floating water sealing and wading conditions.

[0123] Of course, other structures and working principles of the vehicle are understandable and achievable by those skilled in the art, and will not be described in detail in this application.

[0124] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A door drainage system (100), comprising: A controller (10) is provided on the vehicle body; The first water level sensor (21) is installed inside the vehicle door. The first water level sensor (21) is connected to the controller (10). The controller (10) is used to collect the wading status and the wading information of the first water level sensor (21). The first drainage pipe (31) is for installation inside the vehicle door; and The first water pump (41) is located inside the first drainage pipe (31). When the wading depth collected by the first water level sensor (21) reaches the set value, the controller (10) controls the first water pump (41) to work and discharge the water inside the car door out of the car through the first drainage pipe (31).

2. The door drainage system (100) according to claim 1, wherein, The door includes an outer door panel and an inner door panel (76). The outer door panel and the inner door panel (76) are connected and define a door panel cavity (71). The first water level sensor (21), the first drainage pipe (31) and the first water pump (41) are located in the door panel cavity (71). The first water level sensor (21), the first drainage pipe (31) and the first water pump (41) constitute a first drainage system (5151). The first drainage pipe (31) extends along the height direction of the door.

3. The door drainage system (100) according to claim 1 or 2, wherein, The first drainage pipe (31) is provided with a first water intake inlet (311) and a first drain outlet, and the first drain outlet is provided with a first drain one-way valve (61).

4. The door drainage system (100) according to any one of claims 1 to 3, wherein, The first water level sensor (21) is located at the bottom of the lifting structure (72) inside the door.

5. The door drainage system (100) according to claim 4, wherein, The height distance between the first water level sensor (21) and the lifting structure (72) is 45-50mm.

6. The door drainage system (100) according to claim 3, wherein, The first water intake inlet (311) is located at the bottom of the first water level sensor (21).

7. The door drainage system (100) according to claim 3 or 6, wherein, The first water inlet (311) is 10-20mm above the bottom of the first water level sensor (21), and the first drain outlet is 45-55mm above the bottom of the car door.

8. The door drainage system (100) according to any one of claims 1 to 7 further comprises: A second water level sensor (22) is provided on the outside of the threshold (73), and the second water level sensor (22) is connected to the controller (10); and The second drainage pipe (32) is installed inside the threshold. The threshold is provided with a second water inlet (321). One end of the second drainage pipe (32) is connected to the second water inlet (321), and the other end of the second drainage pipe (32) is a second drain outlet. The second drain outlet is connected to the first water pump (41) to discharge water into the first drainage pipe (31). The second water level sensor (22) and the second drainage pipe (32) constitute the second drainage system (52).

9. The door drainage system (100) according to claim 8, wherein, The second water level sensor (22) is located at the bottom of the sheet metal stop (74) of the door frame sealing strip.

10. The door drainage system (100) according to claim 9, wherein, The second water level sensor (22) is 13-17mm above the sheet metal stop (74) of the vehicle body door frame sealing strip, and the second water inlet (321) is 30-45mm above the sheet metal stop (74) of the vehicle body door frame sealing strip.

11. The door drainage system (100) according to any one of claims 1 to 10, further comprising: The third water level sensor (23) is installed on the inner floor plate (75) of the door sill vehicle and is connected to the controller (10). A third drainage pipe (33) is provided on the inner floor panel (75) of the vehicle sill. The third drainage pipe (33) has a third water intake inlet and a third water outlet. The third water intake inlet is connected to a water storage chamber in the inner floor panel (75) of the vehicle sill, and the third water outlet is connected to the outside of the vehicle. The second water pump (42) is installed inside the third drainage pipe (33). The third water level sensor (23), the third drainage pipe (33) and the second water pump (42) constitute the third drainage system (53).

12. The door drainage system (100) according to claim 11, wherein, The door sill is provided with a water inlet on the inner floor plate (75), and a one-way water filter (63) is provided at the water inlet.

13. The door drainage system (100) according to claim 11 or 12, wherein, A second drain check valve (62) is provided at the third drain outlet.

14. The door drainage system (100) according to any one of claims 11 to 13, wherein, The distance between the third drain outlet and the sheet metal stop (74) of the door frame sealing strip is 120-140mm.

15. A control method for a vehicle door drainage system (100), applied to the vehicle door drainage system (100) according to any one of claims 1-14, the control method comprising: When the controller (10) detects that the vehicle is in the ON position, it determines whether the vehicle is in a water-wading state. When it is determined that the vehicle is in a water-wading state, the water wading depth information of the first water level sensor (21) is collected; When the wading depth information collected by the first water level sensor (21) reaches the wading depth inside the door panel cavity (71) of the vehicle door. When in position, the controller (10) controls the first water pump (41) to operate and perform drainage operations; and When the wading depth information collected by the first water level sensor (21) is less than the wading position in the door panel cavity (71) of the vehicle door, the controller (10) controls the first water pump (41) to stop working and exit the drainage mode.

16. The control method for the door drainage system (100) according to claim 15 further includes: When the wading depth information collected by the first water level sensor (21) reaches the wading position inside the door panel cavity (71) of the vehicle door, the controller (10) calculates the current required to drive the actuator based on the current required drainage volume; and The controller (10) determines whether the current required is at the stall current threshold of the motor in the first water pump (41). If it is less than or equal to the stall current threshold, the controller directly drives the actuator to perform the drainage action.

17. The control method for the door drainage system (100) according to claim 15 or 16 further includes: When the water depth information collected by the second water level sensor (22) is not above the threshold and enters the water-sealed cavity of the threshold, the controller (10) controls the first water pump (41) to work and carry out drainage operation through the second drainage pipe (32).

18. The control method for the door drainage system (100) according to any one of claims 15 to 17, further comprising: When the wading depth information collected by the third water level sensor (23) is not above the threshold and enters the wading position of the vehicle body floor, the controller (10) controls the second water pump (42) to work and carry out drainage operation through the third drainage pipe (33).

19. A vehicle comprising the door drainage system (100) of any one of claims 1-14.

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