Oil absorption device, hybrid power box and vehicle

Abstract

The utility model discloses an oil suction device, a hybrid power box and a vehicle, and the oil suction device comprises an execution unit which comprises an oil pool, an oil suction port assembly, an electromagnetic valve assembly, an oil outlet and an oil pump; the oil suction port assembly comprises a first oil suction port, a second oil suction port, a third oil suction port and a fourth oil suction port. The electromagnetic valve assembly comprises a first switch electromagnetic valve, a second switch electromagnetic valve, a third switch electromagnetic valve and a fourth switch electromagnetic valve. And the control unit is used for respectively controlling the opening and closing of the first switch electromagnetic valve, the second switch electromagnetic valve, the third switch electromagnetic valve and the fourth switch electromagnetic valve, so that the first oil suction port, the second oil suction port, the third oil suction port and the fourth oil suction port respectively suck oil from the oil pool. According to the utility model, the control unit controls the opening and closing of the first switch solenoid valve, the second switch solenoid valve, the third switch solenoid valve and the fourth switch solenoid valve according to the inclination state of the vehicle, so that the first oil suction port, the second oil suction port, the third oil suction port and the fourth oil suction port respectively suck oil from the oil pool.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an oil suction device, a hybrid gearbox, and a vehicle. Background Technology

[0002] The current lubrication system of hybrid vehicles has the following problems: (1) The lubrication system generally adopts a single oil suction port design, but the fixed arrangement of the oil suction port is difficult to adapt to the uneven distribution of oil during vehicle dynamic driving, and is prone to cavitation failure due to oil level tilt. (2) The oil temperature regulation depends on the heating of the motor or the residual heat of the engine. There is a problem that the oil viscosity is high when starting at low temperature, resulting in low oil suction efficiency and increased risk of oil pump cavitation. Existing oil heating solutions are mostly achieved through independent heating modules. The heating element is separated from the oil suction path, resulting in low heat transfer efficiency and high energy consumption. (3) The existing technical solution cannot detect when the oil pump is cavitating or running dry. The system is allowed to continue without cooling oil, which can lead to burn-out damage to the motor gear bearings. Utility Model Content

[0003] The purpose of this invention is to provide an oil suction device, a hybrid gearbox, and a vehicle to solve the problems in the prior art. The opening and closing of the oil suction port can be controlled according to the dynamic driving state of the vehicle to avoid the occurrence of cavitation failure.

[0004] In a first aspect, this utility model provides an oil suction device, comprising:

[0005] An execution unit, comprising an oil tank, an oil suction port assembly, a solenoid valve assembly, an oil outlet, and an oil pump, wherein the oil suction port assembly is connected to the oil tank, the outlet end of the solenoid valve assembly is connected to the inlet end of the oil outlet, and the outlet end of the oil outlet is connected to the inlet end of the oil pump.

[0006] The oil suction port assembly includes a first oil suction port, a second oil suction port, a third oil suction port, and a fourth oil suction port. The first oil suction port, the second oil suction port, the third oil suction port, and the fourth oil suction port are respectively arranged corresponding to the four wheels of the vehicle. The solenoid valve assembly includes a first switching solenoid valve, a second switching solenoid valve, a third switching solenoid valve, and a fourth switching solenoid valve.

[0007] The outlet end of the first oil suction port is connected to the inlet end of the first solenoid valve, the outlet end of the second oil suction port is connected to the inlet end of the second solenoid valve, the outlet end of the third oil suction port is connected to the inlet end of the third solenoid valve, and the outlet end of the fourth oil suction port is connected to the inlet end of the fourth solenoid valve.

[0008] The control unit can control the opening and closing of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve respectively, so that the first oil suction port, the second oil suction port, the third oil suction port and the fourth oil suction port are respectively drawn by the oil tank.

[0009] In the oil suction device described above, preferably, the oil suction device further includes a controller, which can detect the height of the wheel and transmit the detection signal to the control unit so that the control unit controls the opening and closing of the solenoid valve assembly.

[0010] In the oil suction device described above, preferably, a heating element is provided in the oil tank, the heating element is immersed in the oil in the oil tank, and the heating element is used to heat the oil in the oil tank.

[0011] In the oil suction device described above, preferably, the heating element includes a heating resistance wire, which is immersed in the oil in the oil tank.

[0012] In the oil suction device described above, preferably, a temperature sensor is also provided in the oil tank, and the temperature sensor is immersed in the oil.

[0013] In the oil suction device described above, preferably, a filter element is provided between the solenoid valve assembly and the oil outlet.

[0014] In the oil suction device described above, preferably, the filter element is a filter screen.

[0015] In the oil suction device described above, preferably, a liquid level sensor is provided between the filter screen and the oil outlet.

[0016] Secondly, this utility model provides a hybrid box, including the aforementioned oil suction device.

[0017] Thirdly, this utility model provides a vehicle including the aforementioned hybrid gearbox.

[0018] Compared with the prior art, the oil suction device of this utility model sets the first, second, third, and fourth oil suction ports to correspond to the four vehicles. The control unit controls the opening and closing of the first, second, third, and fourth solenoid valves according to the tilt state of the vehicle, so that the first, second, third, and fourth oil suction ports can draw oil from the oil sump. This can prevent the oil pump from cavitating when the oil level is tilted, and effectively improve the reliability and self-protection capability of the hybrid gearbox. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the oil suction device provided in an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100 - Execution unit, 200 - Control unit, 300 - Controller;

[0022] 1-Oil suction port assembly, 11-First oil suction port, 12-Second oil suction port, 13-Third oil suction port, 14-Fourth oil suction port, 2-Solenoid valve assembly, 21-First switching solenoid valve, 22-Second switching solenoid valve, 23-Third switching solenoid valve, 24-Fourth switching solenoid valve, 3-Oil outlet, 4-Oil pump, 5-Heating element, 51-Heating resistance wire, 6-Temperature sensor, 7-Filter element, 71-Filter screen, 8-Level sensor. Detailed Implementation

[0023] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] Firstly, referring to Figure 1 As shown, this utility model provides an oil suction device, including an execution unit 100 and a control unit 200, wherein:

[0025] The execution unit 100 includes an oil sump (not shown), an oil suction port assembly 1, a solenoid valve assembly 2, an oil outlet 3, and an oil pump 4. The oil suction port assembly 1 is connected to the oil sump, the outlet end of the solenoid valve assembly 2 is connected to the inlet end of the oil outlet 3, and the outlet end of the oil outlet 3 is connected to the inlet end of the oil pump 4.

[0026] The oil suction port assembly 1 includes a first oil suction port 11, a second oil suction port 12, a third oil suction port 13, and a fourth oil suction port 14. The first oil suction port 11, the second oil suction port 12, the third oil suction port 13, and the fourth oil suction port 14 are respectively arranged corresponding to the four wheels of the vehicle. The solenoid valve assembly 2 includes a first switching solenoid valve 21, a second switching solenoid valve 22, a third switching solenoid valve 23, and a fourth switching solenoid valve 24.

[0027] The outlet end of the first oil suction port 11 is connected to the inlet end of the first solenoid valve 21, the outlet end of the second oil suction port 12 is connected to the inlet end of the second solenoid valve 22, the outlet end of the third oil suction port 13 is connected to the inlet end of the third solenoid valve 23, and the outlet end of the fourth oil suction port 14 is connected to the inlet end of the fourth solenoid valve 24.

[0028] In the embodiments provided in this application, the first oil suction port 11 corresponds to the left front wheel, the second oil suction port 12 corresponds to the left rear wheel, the third oil suction port 13 corresponds to the right front wheel, and the fourth oil suction port 14 corresponds to the right rear wheel. The opening and closing of the first switch solenoid valve 21 can control the first oil suction port 11 to draw oil from the oil tank, the opening and closing of the second switch solenoid valve 22 can control the second oil suction port 12 to draw oil from the oil tank, the opening and closing of the third switch solenoid valve 23 can control the third oil suction port 13 to draw oil from the oil tank, and the opening and closing of the fourth switch solenoid valve 24 can control the fourth oil suction port 14 to draw oil from the oil tank.

[0029] The control unit 200 can control the opening and closing of the first switching solenoid valve 21, the second switching solenoid valve 22, the third switching solenoid valve 23 and the fourth switching solenoid valve 24 respectively, so that the first oil suction port 11, the second oil suction port 12, the third oil suction port 13 and the fourth oil suction port 14 respectively draw oil from the oil tank.

[0030] When the vehicle is in a level position, the height of the four wheels is the same. The control unit 200 controls the first switch solenoid valve 21, the second switch solenoid valve 22, the third switch solenoid valve 23 and the fourth switch solenoid valve 24 to be fully opened, so that the first oil suction port 11, the second oil suction port 12, the third oil suction port 13 and the fourth oil suction port 14 can simultaneously draw oil from the oil sump, thereby increasing the oil suction area, reducing the oil suction flow resistance, and thus improving the oil suction efficiency of the oil pump 4.

[0031] When the vehicle is tilted, the four wheels are at different heights. Based on the logic that the oil will concentrate at the oil suction port corresponding to the wheel at the lowest position, the control unit 200 controls the switch solenoid valve corresponding to the wheel at the lowest position to open, so that the corresponding oil suction port can draw oil from the oil sump. The other switch solenoid valves are closed, and the corresponding oil suction ports are all closed.

[0032] In one specific embodiment, when the left rear wheel of the vehicle is at its lowest height, the control unit 200 controls the first switch solenoid valve 21, the third switch solenoid valve 23 and the fourth switch solenoid valve 24 to close, and the second switch solenoid valve 22 to open, so that the second oil suction port 12 can draw oil from the oil sump. Thus, regardless of the state of the vehicle, sufficient oil can be drawn, avoiding the occurrence of empty suction, thereby improving the vehicle's anti-tilt capability.

[0033] Furthermore, the oil suction device also includes a controller 300, which is electrically connected to the control unit 200. The controller 300 can detect the height of the wheels and transmit the detection signal to the control unit 200, so that the control unit 200 controls the opening and closing of the solenoid valve assembly 2. Specifically, the controller 300 includes a vehicle controller 300, which can detect the attitude information of the four wheels of the vehicle and convert the detected information into a vehicle tilt attitude signal, and then transmit the vehicle tilt attitude signal to the control unit 200. The control unit 200 controls the opening and closing of the corresponding solenoid valve based on the received vehicle tilt attitude signal, so that the corresponding oil suction port can draw oil.

[0034] When the ambient temperature is low, the higher viscosity of the oil at low temperatures during vehicle startup leads to low oil suction efficiency, increasing the risk of the oil pump 4 drawing oil dry. To address this issue, in the embodiments provided in this application, a heating element 5 is provided in the oil sump, immersed in the oil in the sump. The heating element 5 is used to heat the oil in the sump. When the oil temperature is low, the heating element 5 is activated, raising the oil temperature and improving the oil viscosity, enabling the oil pump 4 to draw oil from the sump, thereby improving oil suction efficiency and preventing dry suction.

[0035] Specifically, the heating element 5 includes a heating resistance wire 51, which is immersed in the oil in the oil tank. When the heating resistance wire 51 is working, the oil in the oil tank can be heated evenly so that the oil can be heated to the ideal oil temperature quickly.

[0036] To precisely control the oil temperature in the oil tank, a temperature sensor 6 is installed inside the oil tank, and the temperature sensor 6 is immersed in the oil. The temperature sensor 6 can detect the temperature of the oil in the oil tank and feed the detected oil temperature signal back to the control unit 200. The control unit 200 controls whether the heating resistance wire 51 is working based on the oil temperature signal.

[0037] In one specific embodiment, the ideal operating oil temperature of the hybrid gearbox is above 60°C, at which point the lubrication effect is optimal and the oil churning loss is minimal. When the vehicle is powered on, if the temperature sensor 6 detects that the oil temperature is below this temperature, it sends a signal to the control unit 200. The control unit 200 then controls the heating resistance wire 51 to be energized to heat the oil. When the temperature sensor 6 detects that the oil temperature equals the target temperature, it turns off the heating resistance wire 51.

[0038] To ensure the cleanliness of the oil pumped from the oil tank by the oil pump 4 and to prevent impurities in the oil from damaging downstream equipment, a filter element 7 is provided between the solenoid valve assembly 2 and the oil outlet 3. Specifically, a filter element 7 is provided between the outlet end of the first solenoid valve 21, the second solenoid valve 22, the third solenoid valve 23, and the fourth solenoid valve 24 and the connecting pipeline to the oil outlet 3. This allows impurities in the oil to be filtered out before it flows into the oil outlet 3, thus improving the cleanliness of the oil entering the oil outlet 3.

[0039] In one feasible implementation, the filter element 7 is a filter screen 71, which is disposed between the solenoid valve assembly 2 and the oil outlet 3. The filter screen 71 can filter out larger particulate impurities in the oil, with a significant filtration effect, effectively preventing particulate impurities from damaging downstream equipment. The structure of the filter screen 71 can be set according to actual filtration requirements and is not limited here.

[0040] In the prior art, it is impossible to monitor when the oil pump 4 is idling or running dry, thus making it impossible to determine whether the oil pump 4 is in normal working condition. To solve this problem, in the embodiment provided in this application, a liquid level sensor 8 is provided between the filter screen 71 and the oil outlet 3. The liquid level sensor 8 is used to detect whether the oil suction port assembly 1 is sucking oil out of the oil pool. When the oil pump 4 cannot suck oil out of the oil pool, the liquid level sensor 8 cannot detect the oil. That is, when the liquid level sensor 8 does not detect the oil level information, it means that the oil pump 4 has not sucked out oil. At this time, the liquid level sensor 8 feeds the signal back to the control unit 200. The control unit 200 processes the signal and feeds it back to the controller 300. The controller 300 determines whether the hybrid box motor works / stops and whether the oil pump 4 is restarted or its speed is increased to enhance the oil suction capacity based on the information fed back by the control unit 200.

[0041] Secondly, this utility model provides a hybrid gearbox, including the aforementioned oil suction device. The first oil suction port 11, the second oil suction port 12, the third oil suction port 13, and the fourth oil suction port 14 of the oil suction device are arranged three-dimensionally inside the hybrid gearbox, close to the four wheels of the vehicle. The arrangement of multiple oil suction ports optimizes the absorption and distribution of lubricating oil, not only improving the lubricating oil supply efficiency but also enhancing the reliability and adaptability of the hybrid gearbox.

[0042] Thirdly, this utility model provides a vehicle including the aforementioned hybrid gearbox. Because the hybrid gearbox includes the aforementioned oil suction device, it can flexibly control the oil suction port assembly 1 to suction oil according to the vehicle's tilt state, preventing cavitation. In low-temperature environments, it can intelligently heat the oil based on real-time oil temperature and provide an indication of whether the oil pump 4 is running dry, thus protecting the hybrid gearbox and improving vehicle operating performance and service life.

[0043] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. An oil suction device, characterized in that, include: An execution unit, comprising an oil tank, an oil suction port assembly, a solenoid valve assembly, an oil outlet, and an oil pump, wherein the oil suction port assembly is connected to the oil tank, the outlet end of the solenoid valve assembly is connected to the inlet end of the oil outlet, and the outlet end of the oil outlet is connected to the inlet end of the oil pump. The oil suction port assembly includes a first oil suction port, a second oil suction port, a third oil suction port, and a fourth oil suction port. The first oil suction port, the second oil suction port, the third oil suction port, and the fourth oil suction port are respectively arranged corresponding to the four wheels of the vehicle. The solenoid valve assembly includes a first switching solenoid valve, a second switching solenoid valve, a third switching solenoid valve, and a fourth switching solenoid valve. The outlet end of the first oil suction port is connected to the inlet end of the first solenoid valve, the outlet end of the second oil suction port is connected to the inlet end of the second solenoid valve, the outlet end of the third oil suction port is connected to the inlet end of the third solenoid valve, and the outlet end of the fourth oil suction port is connected to the inlet end of the fourth solenoid valve. The control unit can control the opening and closing of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve respectively, so that the first oil suction port, the second oil suction port, the third oil suction port and the fourth oil suction port are respectively drawn by the oil tank.

2. The oil suction device according to claim 1, characterized in that, The oil suction device also includes a controller that can detect the height of the wheel and transmit the detection signal to the control unit so that the control unit controls the opening and closing of the solenoid valve assembly.

3. The oil suction device according to claim 1, characterized in that, The oil tank is equipped with a heating element, which is immersed in the oil in the oil tank and is used to heat the oil in the oil tank.

4. The oil suction device according to claim 3, characterized in that, The heating element includes a heating resistance wire, which is immersed in the oil in the oil tank.

5. The oil suction device according to claim 3, characterized in that, The oil tank is also equipped with a temperature sensor, which is immersed in the oil.

6. The oil suction device according to claim 1, characterized in that, A filter element is provided between the solenoid valve assembly and the oil outlet.

7. The oil suction device according to claim 6, characterized in that, The filter element is a filter screen.

8. The oil suction device according to claim 7, characterized in that, A liquid level sensor is provided between the filter screen and the oil outlet.

9. A hybrid box, characterized in that, Includes the oil suction device according to any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the hybrid box as described in claim 9.

Images