Lubricating system, lubricating oil control method and device and vehicle

Abstract

The invention relates to a lubricating system, a lubricating oil control method and device and a vehicle, and relates to the technical field of automobiles. The method comprises the steps that the required lubricating oil amount of a speed reducer gear of the vehicle is determined based on driving parameters of the vehicle; the driving parameters comprise the driving speed and the motor torque; the quantity of the required lubricating oil is negatively correlated with the running speed; the required lubricating oil quantity is in positive correlation with the motor torque; under the condition that the required lubricating oil quantity is larger than the current lubricating oil quantity of the speed reducer gear, an oil storage tank is controlled to release lubricating oil to the speed reducer gear; the oil storage tank is used for receiving lubricating oil thrown out when the reducer gear rotates. Therefore, the technical problems that when the depth of lubricating oil of the gear of the speed reducer is large, larger resistance is brought to the operation of the speed reducer, the oil stirring loss of the whole vehicle is large, and the energy consumption of the whole vehicle is increased can be solved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a lubrication system, a lubricating oil control method, a device and a vehicle. Background Art

[0002] With the development of vehicle technology, how to reduce the energy consumption of the whole vehicle has become the focus of attention in the industry. One of the factors affecting the energy consumption of the whole vehicle is the oil churning loss caused by the reducer gear lubricant of the vehicle's drive system. Reducer gear lubricant is used to lubricate the reducer gear to reduce friction and wear between gears, prevent gear deformation or damage, and thus ensure the normal operation of the drive system. At present, the reducer gear is fully lubricated by immersing it in a deeper lubricant.

[0003] However, when the depth of the reducer gear lubricating oil is greater, it will bring greater resistance to the operation of the reducer, and then cause greater oil churning losses to the entire vehicle, thereby increasing the energy consumption of the entire vehicle.

[0004] Document CN115742957A discloses that according to the predicted driving parameters including the driving speed, acceleration and ramp angle, the gearbox parameters including the input speed and input torque under the gear are predicted, and the predicted lubricating oil demand of the gearbox is obtained according to the gearbox parameters. However, the method is aimed at the gearbox and is used to calculate the lubricating oil demand of the gearbox, while the present application is aimed at the reducer and is used to calculate the lubricating oil demand of the reducer. It is known that the gearbox and the reducer are two different components in the vehicle, so this method cannot solve the problem that the lubricating oil of the reducer gear causes large oil stirring losses to the whole vehicle. Document CN114228410B discloses that when the reducer is working at a high speed, the oil flow capacity of the oil outlet of the buffer oil tank is less than the oil flow into the lubricating oil inlet of the buffer oil tank. However, the method only considers reducing the reducer lubricating oil in the gear lubrication box when the reducer is running at a high speed to reduce the oil stirring loss, but does not consider the motor drive torque. If the motor drive torque is large at this time, it will lead to insufficient lubrication of the reducer gear. Summary of the invention

[0005] The purpose of the present invention is to provide a lubrication system, a lubricating oil control method, a device and a vehicle to solve the technical problem that when the depth of the lubricating oil in the reducer gear is large, it will bring greater resistance to the operation of the reducer, thereby causing greater oil stirring losses to the whole vehicle, thereby increasing the energy consumption of the whole vehicle. The technical solution of this application is as follows:

[0006] According to the first aspect of the present application, a lubrication system is provided, the system comprising: a controller for determining the required amount of lubricating oil for a reducer gear of a vehicle based on driving parameters of the vehicle; the driving parameters comprising driving speed and motor torque; the required amount of lubricating oil is negatively correlated with the driving speed; the required amount of lubricating oil is positively correlated with the motor torque; an oil storage tank for receiving the lubricating oil thrown out when the reducer gear rotates; the controller is also used to control the oil storage tank to release the lubricating oil to the reducer gear when the required amount of lubricating oil is greater than the current amount of lubricating oil of the reducer gear.

[0007] In one possible implementation, the controller is also used to obtain the acceleration of the vehicle, determine the speed at which the oil tank releases the lubricating oil based on the acceleration, and control the oil tank to release the lubricating oil to the reducer gear according to the speed at which the oil tank releases the lubricating oil; the speed at which the oil tank releases the lubricating oil is positively correlated with the acceleration.

[0008] In one possible implementation, an oil drain valve is provided on the oil storage tank; the controller is also used to determine the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil, and adjust the oil drain valve to the opening; the opening is positively correlated with the speed at which the oil storage tank releases the lubricating oil.

[0009] In one possible embodiment, a sensor is provided in the area where the oil storage tank and / or the reducer gear are located; the sensor is used to measure the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil in the reducer gear; the controller is also used to determine the current amount of lubricating oil based on the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil in the reducer gear.

[0010] In one possible implementation, the controller is further used to adjust the opening of the oil drain valve of the oil storage tank to a maximum opening when a lubricating oil control failure occurs in the vehicle; the controller is further used to output a prompt message that a lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve of the oil storage tank to the maximum opening is completed; or, when the adjustment of the opening of the oil drain valve of the oil storage tank to the maximum opening is not completed, limit the motor torque of the vehicle to less than a preset value and output a prompt message that a lubricating oil control failure occurs in the vehicle.

[0011] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0012] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0013] According to a second aspect of the present application, a lubricating oil control method is provided, the method comprising: determining the required lubricating oil amount of the vehicle's reducer gear based on the vehicle's driving parameters; the driving parameters include driving speed and motor torque; the required lubricating oil amount is negatively correlated with the driving speed; the required lubricating oil amount is positively correlated with the motor torque; when the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear, controlling the oil storage tank to release lubricating oil to the reducer gear; the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

[0014] In one possible implementation, controlling the oil storage tank to release the lubricating oil to the reducer gear includes: obtaining the acceleration of the vehicle; determining the speed at which the oil storage tank releases the lubricating oil based on the acceleration; the speed at which the oil storage tank releases the lubricating oil is positively correlated with the acceleration; and controlling the oil storage tank to release the lubricating oil to the reducer gear according to the speed at which the oil storage tank releases the lubricating oil.

[0015] In one possible implementation, the oil tank is controlled to release the lubricating oil to the reducer gear according to the speed at which the oil tank releases the lubricating oil, including: determining the opening of an oil drain valve of the oil tank according to the speed at which the oil tank releases the lubricating oil; the opening is positively correlated with the speed at which the oil tank releases the lubricating oil; and adjusting the oil drain valve to the opening.

[0016] In a possible implementation manner, the current lubricating oil amount is determined based on a lubricating oil level in the oil storage tank and / or a lubricating oil level of the reducer gear measured by a sensor.

[0017] In a possible implementation, the method further includes: in the event of a lubricating oil control failure in the vehicle, adjusting the opening of the oil drain valve of the oil storage tank to a maximum opening; in the event of a lubricating oil control failure in the vehicle, after adjusting the opening of the oil drain valve of the oil storage tank to a maximum opening, the method further includes: when the adjustment of the opening of the oil drain valve to the maximum opening is completed, outputting a prompt message that the vehicle has a lubricating oil control failure; or, when the adjustment of the opening of the oil drain valve to the maximum opening is not completed, limiting the motor torque of the vehicle to less than a preset value, and outputting a prompt message that the vehicle has a lubricating oil control failure.

[0018] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0019] In a possible implementation, the driving parameters also include the slope of the driving road; and the required amount of lubricating oil is positively correlated with the slope.

[0020] According to the third aspect provided by the present application, a lubricating oil control device is provided, which includes a processing module; the processing module is used to determine the required lubricating oil amount of the reducer gear of the vehicle based on the driving parameters of the vehicle; the driving parameters include the driving speed and the motor torque; the required lubricating oil amount is negatively correlated with the driving speed; the required lubricating oil amount is positively correlated with the motor torque; the processing module is also used to control the oil storage tank to release lubricating oil to the reducer gear when the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear; the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

[0021] In a possible embodiment, the lubricating oil control device also includes a transmission module; the transmission module is used to obtain the acceleration of the vehicle; the processing module is also used to determine the speed at which the oil storage tank releases the lubricating oil based on the acceleration; the speed at which the oil storage tank releases the lubricating oil is positively correlated with the acceleration; the processing module is also used to control the oil storage tank to release the lubricating oil to the reducer gear according to the speed at which the oil storage tank releases the lubricating oil.

[0022] In a possible implementation, the processing module is also used to determine the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil; the opening is positively correlated with the speed at which the oil storage tank releases the lubricating oil; the processing module is also used to adjust the oil drain valve to the opening.

[0023] In a possible implementation, the transmission module is also used to obtain the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear measured by the sensor; the processing module is also used to determine the current amount of lubricating oil based on the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear.

[0024] In one possible implementation, the processing module is further used to adjust the opening of the oil drain valve of the oil storage tank to a maximum opening when a lubricating oil control failure occurs in the vehicle; the processing module is further used to output a prompt message that a lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve to the maximum opening is completed; the processing module is further used to limit the motor torque of the vehicle to less than a preset value and output a prompt message that a lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve to the maximum opening is not completed.

[0025] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0026] According to the fourth aspect provided by the present application, an electronic device is provided, comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to execute instructions to implement the method of the above-mentioned second aspect and any possible implementation manner thereof.

[0027] According to the fifth aspect provided by the present application, a computer-readable storage medium is provided. When the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute the method of the above-mentioned second aspect and any possible implementation method thereof.

[0028] According to the sixth aspect provided by the present application, a vehicle is provided, comprising: a lubricating oil control device for implementing the method of the above-mentioned second aspect and any possible implementation manner thereof.

[0029] According to the seventh aspect provided by the present application, a computer program product is provided, the computer program product comprising computer instructions, and when the computer instructions are executed on an electronic device, the electronic device executes the method of the above-mentioned second aspect and any possible implementation manner thereof.

[0030] Therefore, the above technical features of the present application have the following beneficial effects:

[0031] (1) The present application can determine the required amount of lubricating oil for the reducer gear based on the vehicle's driving speed, which is negatively correlated with the required amount of lubricating oil for the vehicle's reducer gear, and the vehicle's motor torque, which is positively correlated with the required amount of lubricating oil. Furthermore, in a case where the required amount of lubricating oil is greater than the current amount of lubricating oil for the reducer gear, the oil storage tank that receives the lubricating oil thrown out when the reducer gear rotates is controlled to release the lubricating oil to the reducer gear. That is, when the vehicle's driving speed is low, the reducer gear operates at a low speed, and the ability to splash the lubricating oil is limited at this time. In order to ensure sufficient lubrication of the reducer gear, the reducer gear requires a large amount of lubricating oil, and vice versa. When the motor torque is large, the reducer gear will be loaded heavily. In order to protect the reducer gear, the reducer gear requires a large amount of lubricating oil, and vice versa. The more lubricating oil there is, the greater the oil stirring loss. Therefore, adjusting the lubricating oil amount according to the required lubricating oil amount determined by the driving speed and the motor torque can not only reduce the churning oil loss caused by the lubricating oil, but also avoid the inability to fully lubricate the reducer gear. This solves the technical problem that when the lubricating oil depth of the reducer gear is large, it will bring greater resistance to the operation of the reducer, and then cause greater churning oil loss to the whole vehicle, increasing the energy consumption of the whole vehicle, thereby reducing the energy consumption of the whole vehicle.

[0032] (2) The present application can determine the speed at which the oil storage tank releases lubricating oil to the reducer gear according to the acceleration of the vehicle. That is, when the vehicle accelerates or decelerates rapidly, the load on the reducer gear will also increase rapidly. Therefore, it is necessary to quickly release lubricating oil to the reducer gear to ensure that the reducer gear is fully lubricated in time and avoid the problem that the reducer gear releases lubricating oil slowly, resulting in poor lubrication of the reducer gear.

[0033] (3) The present application can determine and adjust the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil. That is, the larger the opening of the oil drain valve of the oil storage tank is adjusted, the faster the oil storage tank releases the lubricating oil, thereby realizing flexible control of the speed at which the oil storage tank releases the lubricating oil, so as to meet the need for rapid release of the lubricating oil when the vehicle accelerates or decelerates suddenly, and timely ensure the sufficient lubrication of the reducer gear, thereby protecting the reducer gear.

[0034] (4) The present application can measure the height of the lubricating oil through a sensor, thereby calculating the current amount of lubricating oil. That is, the shape and size of the container for holding the lubricating oil are fixed, so the current amount of lubricating oil can be calculated based on the height of the lubricating oil. Therefore, it is convenient to adjust the current amount of lubricating oil according to the needs of the reducer gear in the future, so as to avoid the inability to fully lubricate the reducer gear and reduce the churning loss of the lubricating oil, thereby reducing the energy consumption of the whole vehicle.

[0035] (5) The present application can adjust the opening of the oil drain valve of the oil storage tank to the maximum opening when a lubricating oil control failure occurs in the vehicle. That is, when the opening of the oil drain valve of the oil storage tank is the maximum, the lubricating oil in the oil storage tank can be released at the fastest speed. This avoids the problem that the reducer gear cannot be fully lubricated due to the inability to control the release of the lubricating oil or the release of the lubricating oil is slow, and can protect the reducer gear.

[0036] (6) The present application can output a prompt message when the opening of the oil drain valve of the oil storage tank is adjusted to the maximum opening, reminding the vehicle owner to repair and deal with the lubricating oil control failure. And when the opening of the oil drain valve of the oil storage tank is not adjusted to the maximum opening, the motor torque of the vehicle is limited to avoid the problem that when the motor torque of the vehicle is large, sufficient lubricating oil cannot be released to fully lubricate the reducer gear, resulting in poor lubrication of the reducer gear.

[0037] (7) The present application can determine the difference between the maximum required oil volume and the minimum required oil volume of the reducer gear as the capacity of the oil storage tank. When the vehicle's running speed is the lowest and the motor torque is the highest, the reducer gear requires the most lubricating oil. Similarly, when the vehicle's running speed is the highest and the motor torque is the lowest, the reducer gear requires the least lubricating oil. In this way, when the lubricating oil in the oil storage tank is full, the lubricating oil can be directly overflowed from the top of the oil storage tank to the reducer gear to ensure that the lubricating oil volume of the reducer gear is greater than or equal to the minimum required oil volume, thereby ensuring sufficient lubrication of the reducer gear without the need for other controls, saving computing resources.

[0038] (8) The present application can determine that the amount of lubricating oil required for the reducer gear is greater when the slope of the road is greater. That is, when the slope of the road is greater, the portion of the reducer gear immersed in the lubricating oil may become smaller. To ensure sufficient lubrication of the reducer gear, the amount of lubricating oil required for the reducer gear becomes more, and vice versa. This avoids failure to fully lubricate the reducer gear.

[0039] It should be noted that the technical effects brought about by any implementation method in the second to seventh aspects can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0040] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0042] Figure 1is a structural schematic diagram of a lubrication system according to an exemplary embodiment;

[0043] Figure 2 is a structural schematic diagram of a lubricating oil control system according to an exemplary embodiment;

[0044] Figure 3 is a schematic diagram showing a control motor controlling an oil drain valve according to an exemplary embodiment;

[0045] Figure 4 is a flow chart of a lubricating oil control method according to an exemplary embodiment;

[0046] Figure 5 is a schematic diagram showing a relationship between a driving speed and a lubricating oil amount according to an exemplary embodiment;

[0047] Figure 6 is a flow chart of another lubricating oil control method according to an exemplary embodiment;

[0048] Figure 7 is a flow chart of another lubricating oil control method according to an exemplary embodiment;

[0049] Figure 8 is a flow chart of another lubricating oil control method according to an exemplary embodiment;

[0050] Fig. 9 is a block diagram of a lubricating oil control device according to an exemplary embodiment;

[0051] Fig.10 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0052] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0053] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0054] With the development and rapid popularization of electric vehicles, the endurance of electric vehicles (including hybrid vehicles) has always been the focus of attention in the industry. On the one hand, the battery capacity can be increased to increase the endurance of electric vehicles, and on the other hand, the energy consumption of the whole vehicle can be reduced to increase the endurance of electric vehicles. However, increasing the battery capacity will increase the cost, so the OEM generally improves the endurance by reducing the energy consumption of the whole vehicle. As for how to reduce the energy consumption of the whole vehicle, it can be achieved by reducing the fuel consumption of hybrid vehicles. For consumers, the reduction of the energy consumption of the whole vehicle can effectively reduce the cost of using the vehicle. One of the factors that causes the high energy consumption of electric vehicles is the churning loss of the lubricating oil of the reducer gear of the drive system of the electric vehicle.

[0055] However, when the depth of the reducer gear lubricating oil is large, it will bring greater resistance to the operation of the reducer, and then cause greater oil stirring losses to the whole vehicle, thereby increasing the energy consumption of the whole vehicle. Specifically, under normal circumstances, the reducer lubricating oil of an electric vehicle only needs to immerse part of the reducer gear, and rely on the centrifugal force generated when the gear is running to throw the lubricating oil out and splash it to the part that needs lubrication, so as to lubricate the unimmersed part of the reducer gear and bearing, thereby achieving the purpose of reducer lubrication. However, when the vehicle is running at a low speed, the reducer gear runs at a low speed, and the ability to splash the lubricating oil is limited. At this time, the reducer gear needs to be immersed in a deeper lubricating oil to fully lubricate the reducer gear. And, when the motor torque is large, the reducer gear has a large load. In order to protect the reducer gear, the reducer gear requires a large amount of lubricating oil. At this time, the reducer gear needs to be immersed in a deeper lubricating oil to fully lubricate the reducer gear. On the contrary, when the vehicle speed is high and the motor torque is small, so much lubricating oil is not needed. The extra lubricating oil will bring greater resistance to the operation of the reducer, which means more oil churning losses to the whole vehicle, reducing the power transmission efficiency of the reducer, thereby increasing the energy consumption of the whole vehicle.

[0056] In response to the above problems, in order to reduce the oil churning loss caused by the lubricating oil and avoid the inability to fully lubricate the reducer gears, the present application proposes a lubricating oil control method. During the driving process of the vehicle, the amount of lubricating oil in the reducer gear is adjusted in real time according to the click torque, driving speed, slope and other information. This solves the problem in the related technology that when the depth of the lubricating oil in the reducer gear is large, it will bring greater resistance to the operation of the reducer, thereby causing greater oil churning losses to the entire vehicle and increasing the energy consumption of the entire vehicle.

[0057] For ease of understanding, the lubrication system and lubricating oil control method provided in the present application are specifically introduced below in conjunction with the accompanying drawings.

[0058] Figure 11 is a schematic diagram of a lubrication system according to an exemplary embodiment. The lubrication system 10 includes: a controller (also called a microcontroller unit (MCU)), a reducer housing 11. The reducer housing 11 includes: an oil storage tank 111 and a reducer gear 112. An oil drain valve 1111 is provided on the oil storage tank 111. A sensor (level transmitter, LT) 1112 is provided in the area where the oil storage tank 111 or the reducer gear 112 is located. The controller is not shown in the figure.

[0059] Optionally, the oil storage tank 111 can be a container of any shape, so that the lubricating oil in the oil storage tank 111 can be quickly released when the oil drain valve 1111 is opened. In order to facilitate the oil storage tank 111 to collect the lubricating oil and quickly release the lubricating oil in the oil storage tank 111, the height of the oil storage tank 111 can be designed to be as high as possible after the volume of the oil storage tank 111 has been determined and there is enough space for arrangement in the reducer housing 11. In order to facilitate the oil storage tank 111 to collect the lubricating oil, the container mouth of the oil storage tank 111 can be designed to be an open shape.

[0060] The container opening of the oil storage tank 111 is responsible for collecting the reducer lubricating oil that needs to be temporarily stored. Therefore, the container opening of the oil storage tank 111 should be arranged so that when the vehicle is running, the reducer lubricating oil thrown out by the centrifugal force generated by the rotation of the reducer gear 112 can effectively fall into the oil storage tank 111. The bottom position of the oil storage tank 111 should be higher than the lubricating oil height (i.e. the height of the lubricating oil liquid level) of the reducer gear 112 when the reducer lubricating oil in the oil storage tank 111 is completely released.

[0061] The reducer gear 112 is a large plate gear of the intermediate shaft. It is the first stage gear after the reduction of the output shaft of the vehicle driving motor. It is a gear with a larger radius and the highest speed except the reducer input shaft. It has the characteristics of large radius and high speed. When it rotates, it can drive the lubricating oil of the bottom reducer along the tangent direction of the gear rotation direction, and be thrown out and separated from the gear by centrifugal force. Figure 1 The direction of the arrow in the diagram is the direction in which the lubricating oil is thrown out.

[0062] The oil drain valve 1111 can be an oil drain baffle, or can be other valve devices that can control the release of the lubricating oil in the oil storage tank 111. The oil drain valve 1111 can be arranged at the lowest position of the oil storage tank 111, so that when the oil drain valve 1111 is opened, the lubricating oil in the oil storage tank 111 can flow out completely. When the oil drain valve 1111 is an oil drain baffle, the opening direction of the oil drain baffle can be downward opening, and when opening downward, the oil drain baffle cannot interfere with other structures within the full stroke range. The downward opening is to facilitate the oil drain baffle to be in a naturally open state when a failure occurs in the oil drain baffle control mechanism (i.e., the control motor). The oil drain valve 1111 of other structures also needs to have similar functions to ensure that when a failure occurs in the control of the oil storage tank 111, there is enough lubricating oil in the area where the reducer gear is located to support the vehicle to operate under all working conditions.

[0063] The sensor 1112 may be a float type liquid level sensor, or any other sensor that can accurately measure the height of the lubricating oil in the oil storage tank 111. The sensor 1112 may be arranged in the oil storage tank 111, or in the area where the reducer gear 112 is located, or in the area where the oil storage tank 111 and the reducer gear 112 are located at the same time, so that the sensor 1112 can measure the liquid level height of the oil storage tank 111 from an empty tank to a full tank and / or the lubricating oil height of the reducer gear, and can send the lubricating oil height to the controller.

[0064] A lubricating oil control method provided in an embodiment of the present application can be applicable to a lubricating oil control system. Figure 2 FIG. 1 is a schematic diagram showing a structure of a lubricating oil control system according to an exemplary embodiment. Figure 2 As shown, the lubricating oil control system includes: a controller 21 (i.e. Figure 1 Controller in), vehicle control unit (VCU) 22, sensor 23 (i.e. Figure 1 The sensor 1112) and the control motor 24.

[0065] The controller 21 is the control center of the lubricating oil control system, which needs to obtain the relevant signals input by the vehicle controller 22 and the sensor 23, and then control the control motor 24 to operate through a specific control program. Specifically, the vehicle controller 22 is used to collect the driving parameters of the vehicle and send the driving parameters of the vehicle to the controller 21; the sensor 23 is used to obtain and measure the height of the lubricating oil in the oil storage tank (also known as the depth of the lubricating oil) and / or the height of the lubricating oil of the reducer gear, and send the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil of the reducer gear to the controller 21 through an electrical signal. The controller 21 is used to calculate the current amount of lubricating oil of the reducer gear based on the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil of the reducer gear, receive the driving parameters of the vehicle sent by the vehicle controller 22, determine the required amount of lubricating oil of the reducer gear of the vehicle based on the driving parameters of the vehicle, and control the oil storage tank to release lubricating oil to the reducer gear through the control motor 24 when the required amount of lubricating oil is greater than the current amount of lubricating oil of the reducer gear.

[0066] Optionally, the action of the control motor 24 is controlled by the controller 21. The control motor 24 can be a stepper motor that can obtain the rotation position of the motor shaft in real time, or it can be other motor systems that can obtain the rotation position of the motor shaft in real time and can accurately control its stop position through the MCU.

[0067] It should be noted that the controller 21 and the vehicle controller 22 can communicate with each other through CAN network messages and other means.

[0068] like Figure 3 As shown, the control motor can be connected to the oil drain valve of the oil storage tank through a transmission mechanism. The controller can drive the oil drain valve to operate by controlling the rotation of the control motor, thereby controlling the size of the oil drain hole opening to achieve the purpose of releasing the lubricating oil in the oil storage tank at different rates.

[0069] Figure 4 is a flow chart of a lubricating oil control method according to an exemplary embodiment. Figure 4 As shown, applied to a controller, the lubricating oil control method includes steps S201-S202:

[0070] S201. Determine the required amount of lubricating oil for the reducer gear of the vehicle based on the driving parameters of the vehicle.

[0071] Optionally, the driving parameters include driving speed and motor torque; the required amount of lubricating oil is negatively correlated with the driving speed; and the required amount of lubricating oil is positively correlated with the motor torque.

[0072] Optionally, during the driving of the vehicle, the VCU of the vehicle may collect the driving parameters of the vehicle and send the driving parameters of the vehicle to the MCU of the vehicle. The MCU may determine the required lubricating oil quantity of the reducer gear of the vehicle by querying a first preset table or by a preset formula based on the driving parameters of the vehicle. The first preset table may include the required lubricating oil quantity of the reducer gear corresponding to all driving speeds and all motor torques of the vehicle.

[0073] It should be noted that when the vehicle's speed is low, the speed of the reducer gears is low, and the splashing ability of the lubricating oil is limited. To ensure the full lubrication of the reducer gears, the reducer gears require more lubricating oil, and vice versa. Therefore, the lower the vehicle's speed, the more lubricating oil the reducer gears require, and the less lubricating oil there is in the oil tank. Conversely, the higher the vehicle's speed, the less lubricating oil the reducer gears require, and the more lubricating oil there is in the oil tank. Figure 5 As shown, the higher the vehicle's running speed, the more lubricating oil there is in the oil tank. When the vehicle's running speed increases from 20 km / h to 120 km / h, the amount of lubricating oil in the oil tank increases from 0 to 100%.

[0074] Similarly, when the motor torque is large, the reducer gear will be loaded with a large load. In order to protect the reducer gear, the reducer gear requires a large amount of lubricating oil, and vice versa. Therefore, in the first preset table, the lower the driving speed and the greater the motor torque, the more lubricating oil the reducer gear requires, and the less lubricating oil in the oil tank, and vice versa.

[0075] For example, under normal circumstances, the vehicle's driving speed is within the range of 20km / h to 120km / h, and the vehicle's motor torque is between 100Nm and 300Nm. The total amount of lubricating oil for the vehicle's reducer gear is 120ml. It can be assumed that when the vehicle's driving speed is 20km / h and the vehicle's motor torque is 300Nm, the required amount of lubricating oil for the vehicle's reducer gear is 120ml, when the vehicle's driving speed is 50km / h and the vehicle's motor torque is 200Nm, the required amount of lubricating oil for the vehicle's reducer gear is 80ml, and when the vehicle's driving speed is 120km / h and the vehicle's motor torque is 100Nm, the required amount of lubricating oil for the vehicle's reducer gear is 30ml.

[0076] In a possible implementation, the driving parameters also include the slope of the driving road; and the required amount of lubricating oil is positively correlated with the slope.

[0077] Optionally, depending on the position of the reducer on the vehicle, the depth of the reducer gear immersed in the lubricating oil will vary when the vehicle is on different slopes. Therefore, the MCU can appropriately adjust the amount of oil in the oil tank based on the layout of the vehicle's reducer and the detected slope of the vehicle's driving road to ensure that the reducer gear has sufficient lubricating oil when driving on the slope.

[0078] It should be noted that, under normal circumstances, when the slope is large, the reducer gear as a whole will be immersed in the lubricating oil for a smaller part. In order to protect the reducer gear, the reducer gear requires more lubricating oil, and vice versa. Therefore, in the first preset table, the greater the slope, the more lubricating oil the reducer gear requires, and the less lubricating oil in the oil storage tank, and vice versa.

[0079] The present application can determine that the amount of lubricating oil required for the reducer gear is greater when the slope of the road is greater. That is, when the slope of the road is greater, the portion of the reducer gear immersed in the lubricating oil may become less. To ensure sufficient lubrication of the reducer gear, the amount of lubricating oil required for the reducer gear becomes more, and vice versa. This avoids failure to fully lubricate the reducer gear.

[0080] In a possible implementation, the MCU may obtain the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear measured by the sensor. Based on the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear, the MCU may determine the current amount of lubricating oil.

[0081] Optionally, during the driving process of the vehicle, sensors in the oil tank and / or the area where the reducer gear is located can measure the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear in real time, and send the height of the lubricating oil and / or the height of the lubricating oil in the reducer gear to the MCU. Based on the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear, the MCU can determine the current amount of lubricating oil. The current amount of lubricating oil is the amount of lubricating oil in the area where the reducer gear is located, which is used to lubricate the reducer gear.

[0082] Optionally, since the bottom area of ​​the oil tank is usually fixed, the MCU can determine the amount of lubricating oil in the oil tank as the product of the bottom area of ​​the oil tank and the height of the lubricating oil in the oil tank, and the amount of lubricating oil in the area where the reducer gear is located can also be calculated in this way.

[0083] It should be noted that the total amount of lubricating oil in the vehicle's reducer gear is fixed. When only the amount of lubricating oil in the oil storage tank is obtained, the amount of lubricating oil in the area where the reducer gear is located can be obtained by subtracting the amount of lubricating oil in the oil storage tank from the total amount of lubricating oil in the vehicle's reducer gear.

[0084] The present application can measure the height of the lubricating oil through a sensor, thereby calculating the current amount of lubricating oil. That is, the shape and size of the container for the lubricating oil are fixed, so the current amount of lubricating oil can be calculated based on the height of the lubricating oil. Therefore, it is convenient to adjust the current amount of lubricating oil according to the needs of the reducer gear in the future, so as to avoid the inability to fully lubricate the reducer gear and reduce the churning loss of the lubricating oil, thereby reducing the energy consumption of the whole vehicle.

[0085] S202: When the required amount of lubricating oil is greater than the current amount of lubricating oil of the reducer gear, control the oil storage tank to release lubricating oil to the reducer gear.

[0086] Among them, the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

[0087] Optionally, when the required amount of lubricating oil is greater than the current amount of lubricating oil of the reducer gear, the MCU may send a signal to the control motor to open the oil drain valve, and the control motor rotates according to the signal to open the oil drain valve, driving the oil drain valve of the oil storage tank to open, so as to release lubricating oil to the reducer gear, so that the current amount of lubricating oil of the reducer gear reaches the required amount of lubricating oil. When the current amount of lubricating oil of the reducer gear reaches the required amount of lubricating oil, the MCU may send a signal to the control motor to close the oil drain valve, and the control motor rotates according to the signal to close the oil drain valve, driving the oil drain valve of the oil storage tank to close, so as to stop releasing lubricating oil to the reducer gear.

[0088] For example, assuming that the required lubricating oil amount of the vehicle's reducer gear is 80 ml, and the current lubricating oil amount of the reducer gear is 60 ml, the oil drain valve of the oil tank is opened to release the lubricating oil to the reducer gear until the current lubricating oil amount of the reducer gear reaches 80 ml.

[0089] The present application can determine the required lubricating oil amount of the reducer gear based on the vehicle's driving speed, which is negatively correlated with the required lubricating oil amount of the vehicle's reducer gear, and the vehicle's motor torque, which is positively correlated with the required lubricating oil amount. Further, when the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear, the oil storage tank that receives the lubricating oil thrown out when the reducer gear rotates is controlled to release the lubricating oil to the reducer gear. That is, when the vehicle's driving speed is low, the speed of the reducer gear is low, and the splashing ability of the lubricating oil is limited. In order to ensure the full lubrication of the reducer gear, the lubricating oil amount required for the reducer gear is large, and vice versa. When the motor torque is large, the reducer gear will be loaded heavily. In order to protect the reducer gear, the lubricating oil amount required for the reducer gear is large, and vice versa. The more lubricating oil amount, the greater the oil stirring loss. Therefore, adjusting the lubricating oil amount according to the required lubricating oil amount determined by the driving speed and the motor torque can not only reduce the oil stirring loss caused by the lubricating oil, but also avoid the inability to fully lubricate the reducer gear. This solves the technical problem that when the depth of the reducer gear lubricating oil is too deep, it will bring greater resistance to the operation of the reducer, thereby causing greater oil churning losses to the entire vehicle and increasing the energy consumption of the entire vehicle, thereby reducing the energy consumption of the entire vehicle.

[0090] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0091] Optionally, the maximum required amount of oil for the reducer gear can be the designed theoretical amount of lubricating oil required by the reducer when there is no lubricating oil stored in the oil tank, the vehicle is traveling at the lowest speed (i.e., minimum driving speed), and the vehicle is in full throttle acceleration state (at this time the vehicle's motor torque is the maximum motor torque).

[0092] The minimum required oil volume of the reducer gear can be the amount of lubricating oil required by the reducer gear when the vehicle is traveling at a high speed and at a constant speed on a straight surface (i.e., at this time, the driving speed is the maximum driving speed and the motor torque is the minimum motor torque). Assuming that there is no oil stored in the oil tank, the capacity of the oil tank should be the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear. The capacity of the oil tank should be the same as the difference between the calculated maximum required oil volume and the minimum required oil volume of the reducer gear. The purpose is that when the vehicle maintains high-speed driving, if the reducer lubricating oil in the oil tank has reached the upper limit of the oil storage, there is no need to drain the oil by opening the oil drain valve, and the lubricating oil splashed by the reducer gear can be directly overflowed from the top of the oil tank.

[0093] For example, assuming the minimum driving speed is 20km / h and the maximum motor torque is 300Nm, the maximum required oil volume of the reducer gear is 120ml; assuming the maximum driving speed is 120km / h and the minimum motor torque is 100Nm, the maximum required oil volume of the reducer gear is 30ml; then the capacity of the fuel tank is 120ml-30ml=90ml.

[0094] The present application can determine the difference between the maximum required oil volume and the minimum required oil volume of the reducer gear as the capacity of the oil storage tank. When the vehicle's running speed is the lowest and the motor torque is the highest, the reducer gear requires the most lubricating oil. Similarly, when the vehicle's running speed is the highest and the motor torque is the lowest, the reducer gear requires the least lubricating oil. In this way, when the lubricating oil in the oil storage tank is full, the lubricating oil can be directly overflowed from the top of the oil storage tank to the reducer gear to ensure that the lubricating oil volume of the reducer gear is greater than or equal to the minimum required oil volume, thereby ensuring sufficient lubrication of the reducer gear without the need for other controls, saving computing resources.

[0095] Figure 6 is a flow chart of another lubricating oil control method according to an exemplary embodiment. Figure 6 As shown, before the above step S202 of "controlling the oil storage tank to release lubricating oil to the reducer gear", the method further includes S301-S303:

[0096] S301. Obtain the acceleration of the vehicle.

[0097] Optionally, during the driving of the vehicle, the VCU of the vehicle can collect the acceleration of the vehicle in real time and send the acceleration of the vehicle to the MCU of the vehicle. The MCU of the vehicle can receive the acceleration of the vehicle.

[0098] S302: Determine the speed at which the oil storage tank releases lubricating oil based on the acceleration.

[0099] Among them, the speed at which the oil tank releases lubricating oil is positively correlated with the acceleration.

[0100] Optionally, the MCU of the vehicle can determine the speed of releasing the lubricating oil from the oil tank based on the acceleration by querying a second preset table. The second preset table stores the speeds of releasing the lubricating oil corresponding to the accelerations of all vehicles.

[0101] It should be noted that when the vehicle is accelerated or decelerated rapidly (i.e., the acceleration of the vehicle is large), the load on the reducer gear will also increase rapidly, so it is necessary to quickly release lubricating oil to the reducer gear. Therefore, the greater the acceleration of the vehicle in the second preset table, the greater the speed of releasing lubricating oil.

[0102] S303, controlling the oil storage tank to release the lubricating oil to the reducer gear according to the speed at which the oil storage tank releases the lubricating oil.

[0103] Optionally, the vehicle's MCU can control the speed at which the oil tank releases the lubricating oil to the reducer gear by controlling the rotation of the control motor according to the speed at which the oil tank releases the lubricating oil.

[0104] The present application can determine the speed at which the oil storage tank releases lubricating oil to the reducer gear according to the acceleration of the vehicle. That is, when the vehicle accelerates or decelerates rapidly, the load on the reducer gear will also increase rapidly, so it is necessary to quickly release lubricating oil to the reducer gear to ensure sufficient lubrication of the reducer gear in time and avoid the problem of poor lubrication of the reducer gear caused by the slow release of lubricating oil from the reducer gear.

[0105] Figure 7 is a flow chart of another lubricating oil control method according to an exemplary embodiment. Figure 7 As shown, the method in the above step S303 specifically includes S401-S402:

[0106] S401. Determine the opening of the oil drain valve of the oil storage tank according to the speed at which the lubricating oil is released from the oil storage tank.

[0107] Among them, the opening degree is positively correlated with the speed at which the oil tank releases the lubricating oil.

[0108] S402, adjust the oil drain valve to the opening degree.

[0109] Optionally, the MCU of the vehicle can determine the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil. The larger the opening of the oil drain valve, the larger the oil drain hole opening, and the faster the oil storage tank releases.

[0110] When the opening of the drain valve of the oil storage tank is determined, the MCU can send a signal to control the drain valve to open to the control motor, and the signal to control the drain valve to open includes the required drain valve opening. Further, the control motor rotates according to the signal to control the drain valve to open, driving the drain valve of the oil storage tank to open to the required drain valve opening, so as to release the lubricating oil at a corresponding speed.

[0111] For example, when the oil drain valve is an oil discharge baffle, the control motor can rotate to control the opening angle of the oil discharge baffle, thereby controlling the size of the oil drain hole opening and achieving the purpose of releasing the lubricating oil in the oil storage tank at different rates (i.e., speeds).

[0112] It should be noted that the size of the oil drain hole corresponds to the rate at which the lubricating oil in the oil tank is released and drained, and should be able to meet the reducer lubricating oil liquid level requirements for the dynamic needs of the reducer gears under rapid acceleration and deceleration conditions of the vehicle.

[0113] The present application can determine and adjust the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil. That is, the larger the opening of the oil drain valve of the oil storage tank is adjusted, the faster the oil storage tank releases the lubricating oil, thereby realizing flexible control of the speed at which the oil storage tank releases the lubricating oil, so as to meet the need for rapid release of the lubricating oil when the vehicle accelerates or decelerates suddenly, and timely ensure the sufficient lubrication of the reducer gear, thereby protecting the reducer gear.

[0114] Figure 8 is a flow chart of another lubricating oil control method according to an exemplary embodiment. Figure 8 As shown, the method further includes S501-S502 or S501-S503:

[0115] S501. When a lubricating oil control failure occurs in a vehicle, the opening of the oil drain valve of the oil storage tank is adjusted to a maximum opening.

[0116] Optionally, during the driving of the vehicle, the control motor can feed back the opening of the oil drain valve to the MCU in real time. The MCU can diagnose in real time whether the vehicle has a lubricating oil control failure based on information such as the opening of the oil drain valve, the height of the lubricating oil in the oil storage tank and / or the lubricating oil height information of the reducer gear. Lubricating oil control failure includes at least one of the following: failure of the oil drain valve of the oil storage tank (i.e., the oil drain valve does not work), failure of the sensor (i.e., the sensor does not work), power failure of the control motor, etc. Further, when the MCU identifies that the vehicle has a lubricating oil control failure, the MCU can adjust the opening of the oil drain valve of the oil storage tank to the maximum opening. Adjusting the opening of the oil drain valve of the oil storage tank to the maximum opening can be adjusted by its own gravity or by the control motor to make it the maximum opening and present a fully open state.

[0117] For example, the control motor can provide real-time feedback of the position of the oil drain baffle to the MCU.

[0118] The present application can adjust the opening of the oil drain valve of the oil storage tank to the maximum opening when a lubricating oil control failure occurs in the vehicle. That is, when the opening of the oil drain valve of the oil storage tank is the maximum, the lubricating oil in the oil storage tank can be released at the fastest speed. This avoids the problem that the reducer gear cannot be fully lubricated due to the inability to control the release of the lubricating oil or the slow release of the lubricating oil, and can protect the reducer gear.

[0119] S502: When the opening of the oil drain valve is adjusted to the maximum opening, output a prompt message indicating that a lubricating oil control failure occurs in the vehicle.

[0120] Optionally, the MCU can determine in real time whether the opening of the oil drain valve is at the maximum opening according to information such as the opening of the oil drain valve and the height of the lubricating oil in the oil storage tank. For example, when the opening of the oil drain valve is at the maximum opening (i.e., the oil drain valve is fully open), or the height of the lubricating oil in the oil storage tank is 0, the opening of the oil drain valve is determined to be at the maximum opening, and the MCU can determine that the adjustment of the opening of the oil drain valve to the maximum opening is completed. Otherwise, the MCU can determine that the adjustment of the opening of the oil drain valve to the maximum opening is not completed.

[0121] When the MCU determines that the opening of the oil drain valve has been adjusted to the maximum opening, the MCU can send a prompt message of "Reducer lubricating oil intelligent control system fault level 1" to the vehicle's VCU (i.e., a prompt message that the vehicle has a lubricating oil control fault). At this time, the vehicle can drive normally, and the MCU can light up the vehicle's normal warning fault light to remind the user to drive the vehicle to a service station for inspection and repair as soon as possible.

[0122] S503: When the opening of the oil drain valve is adjusted to the maximum opening but has not been completed, the motor torque of the vehicle is limited to be less than a preset value, and a prompt message indicating that a lubricating oil control failure occurs in the vehicle is output.

[0123] Optionally, when the MCU determines that the adjustment of the opening of the oil drain valve to the maximum opening is not completed, the MCU cannot determine whether the adjustment of the opening of the oil drain valve to the maximum opening is completed, or the MCU determines that the oil drain valve is closed and cannot be opened, the motor torque of the vehicle is limited to less than a preset value, and a prompt message of "speed reducer lubricating oil intelligent control system fault level 2" is sent to the vehicle's VCU (i.e., a prompt message of a lubricating oil control fault in the vehicle), and the MCU can light up the vehicle's ordinary warning fault light to remind the user to drive the vehicle to a service station for inspection and repair as soon as possible. In this way, the motor drive torque can be limited, so that the power of the whole vehicle is limited, so as to avoid the problem that when the motor torque of the vehicle is large, enough lubricating oil cannot be released to fully lubricate the speed reducer gears, resulting in poor lubrication of the speed reducer gears.

[0124] The application can output a prompt message when the opening of the oil drain valve of the oil storage tank is adjusted to the maximum opening, reminding the owner to repair and deal with the lubricating oil control failure. And when the opening of the oil drain valve of the oil storage tank is not adjusted to the maximum opening, the motor torque of the vehicle is limited to avoid the problem that when the motor torque of the vehicle is large, sufficient lubricating oil cannot be released to fully lubricate the reducer gear, resulting in poor lubrication of the reducer gear.

[0125] The lubrication system and lubricating oil control method proposed in this application can be applied to various vehicle models such as pure electric and plug-in hybrid.

[0126] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. In order to achieve the above functions, the lubricating oil control device or electronic device includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0127] The embodiment of the present application can exemplarily divide the functional modules of the lubricating oil control device or the electronic device according to the above method. For example, the lubricating oil control device or the electronic device can include various functional modules corresponding to the various functional divisions, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in the current implementation.

[0128] Fig. 9 is a block diagram of a lubricating oil control device according to an exemplary embodiment. Fig. 9 The lubricating oil control device 110 includes: a processing module 1101.

[0129] The processing module 1101 is used to determine the required amount of lubricating oil for the reducer gear of the vehicle based on the driving parameters of the vehicle; the driving parameters include the driving speed and the motor torque; the required amount of lubricating oil is negatively correlated with the driving speed; the required amount of lubricating oil is positively correlated with the motor torque; the processing module 1101 is also used to control the oil storage tank to release lubricating oil to the reducer gear when the required amount of lubricating oil is greater than the current amount of lubricating oil in the reducer gear; the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

[0130] In a possible implementation, the lubricating oil control device also includes a transmission module 1102; the transmission module 1102 is used to obtain the acceleration of the vehicle; the processing module 1101 is also used to determine the speed at which the oil storage tank releases the lubricating oil based on the acceleration; the speed at which the oil storage tank releases the lubricating oil is positively correlated with the acceleration; the processing module 1101 is also used to control the oil storage tank to release the lubricating oil to the reducer gear according to the speed at which the oil storage tank releases the lubricating oil.

[0131] In a possible implementation, the processing module 1101 is also used to determine the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil; the opening is positively correlated with the speed at which the oil storage tank releases the lubricating oil; the processing module 1101 is also used to adjust the oil drain valve to the opening.

[0132] In a possible implementation, the transmission module 1102 is also used to obtain the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear measured by the sensor; the processing module 1101 is also used to determine the current amount of lubricating oil based on the height of the lubricating oil in the oil tank and / or the height of the lubricating oil in the reducer gear.

[0133] In one possible implementation, the processing module 1101 is further used to adjust the opening of the oil drain valve of the oil storage tank to a maximum opening when a lubricating oil control failure occurs in the vehicle; the processing module 1101 is further used to output a prompt message that a lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve to the maximum opening is completed; the processing module 1101 is further used to limit the motor torque of the vehicle to less than a preset value and output a prompt message that a lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve to the maximum opening is not completed.

[0134] In one possible implementation, the capacity of the oil tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

[0135] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0136] Fig.10 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Fig.10As shown, the electronic device 130 includes but is not limited to: a processor 1301 and a memory 1302 .

[0137] The memory 1302 is used to store executable instructions of the processor 1301. It can be understood that the processor 1301 is configured to execute instructions to implement the lubricating oil control method in the above embodiment.

[0138] It should be noted that those skilled in the art can understand that Fig.10 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and the electronic device may include Fig.10 More or fewer components may be shown, or certain components may be combined, or the components may be arranged differently.

[0139] The processor 1301 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 1302, and calling data stored in the memory 1302, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 1301 may include one or more processing modules 1101. Optionally, the processor 1301 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 1301.

[0140] The memory 1302 may be used to store software programs and various data. The memory 1302 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one functional module (such as an acquisition unit, a determination module, a processing unit, etc.), etc. In addition, the memory 1302 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0141] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 1302 including instructions. The instructions can be executed by the processor 1301 of the electronic device 130 to implement the lubricating oil control method in the above embodiment.

[0142] In the current implementation, Fig. 9 The functions of the processing module 1101 and the transmission module 1102 in Fig.10 The processor 1301 in the embodiment calls the computer program stored in the memory 1302. The specific execution process can refer to the description of the lubricating oil control method in the above embodiment, which will not be repeated here.

[0143] Optionally, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0144] In an exemplary embodiment, a vehicle including a lubricating oil control device is also provided. The vehicle can implement the lubricating oil control method in the above embodiment through the lubricating oil control device.

[0145] In an exemplary embodiment, the present application also provides a computer program product including one or more instructions, and the one or more instructions can be executed by the processor 1301 of the electronic device to complete the lubricating oil control method in the above embodiment.

[0146] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above-mentioned lubricating oil control method embodiment are implemented, and the same technical effect as the above-mentioned lubricating oil control method can be achieved. To avoid repetition, they will not be repeated here.

[0147] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In the current application, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete the full classification, partial or partial functions described above.

[0148] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in the current implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0149] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to current needs to achieve the purpose of the present embodiment.

[0150] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0151] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the full classification part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute the full classification part or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, disk or CD and other media that can store program code.

[0152] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lubrication system, characterized in that: The system comprises: A controller, for determining a required amount of lubricating oil for a reducer gear of the vehicle based on a driving parameter of the vehicle; the driving parameter includes a driving speed and a motor torque; the required amount of lubricating oil is negatively correlated with the driving speed; the required amount of lubricating oil is positively correlated with the motor torque; An oil storage tank, used to receive the lubricating oil thrown out when the reducer gear rotates; The controller is further used to control the oil storage tank to release the lubricating oil to the reducer gear when the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear.

2. The system according to claim 1, characterized in that The controller is also used to obtain the acceleration of the vehicle, determine the speed at which the oil tank releases the lubricating oil based on the acceleration, and control the oil tank to release the lubricating oil to the reducer gear according to the speed at which the oil tank releases the lubricating oil; the speed at which the oil tank releases the lubricating oil is positively correlated with the acceleration.

3. The system according to claim 2, characterized in that The oil storage tank is provided with an oil drain valve; the controller is also used to determine the opening of the oil drain valve of the oil storage tank according to the speed at which the lubricating oil is released from the oil storage tank, and adjust the oil drain valve to the opening; the opening is positively correlated with the speed at which the lubricating oil is released from the oil storage tank.

4. The system according to claim 1, characterized in that A sensor is arranged in the area where the oil storage tank and / or the reducer gear are located; the sensor is used to measure the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil in the reducer gear; the controller is also used to determine the current amount of lubricating oil based on the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil in the reducer gear.

5. The system according to claim 4, characterized in that The controller is further used to adjust the opening of the oil drain valve of the oil storage tank to a maximum opening when a lubricating oil control failure occurs in the vehicle; the controller is further used to output a prompt message that the lubricating oil control failure occurs in the vehicle when the adjustment of the opening of the oil drain valve of the oil storage tank to the maximum opening is completed; or, when the adjustment of the opening of the oil drain valve of the oil storage tank to the maximum opening is not completed, limit the motor torque of the vehicle to less than a preset value and output a prompt message that the lubricating oil control failure occurs in the vehicle.

6. The system according to claim 1, characterized in that The capacity of the oil storage tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

7. A lubricating oil control method, characterized in that: The method comprises: Determining the required lubricating oil quantity of the reducer gear of the vehicle based on the driving parameters of the vehicle; the driving parameters include driving speed and motor torque; the required lubricating oil quantity is negatively correlated with the driving speed; the required lubricating oil quantity is positively correlated with the motor torque; When the required amount of lubricating oil is greater than the current amount of lubricating oil of the reducer gear, the oil storage tank is controlled to release the lubricating oil to the reducer gear; the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

8. The method according to claim 7, characterized in that The controlling oil storage tank to release lubricating oil to the reducer gear comprises: obtaining the acceleration of the vehicle; Based on the acceleration, determining a speed at which the oil storage tank releases the lubricating oil; the speed at which the oil storage tank releases the lubricating oil is positively correlated with the acceleration; According to the speed at which the oil storage tank releases the lubricating oil, the oil storage tank is controlled to release the lubricating oil to the reducer gear.

9. The method according to claim 8, characterized in that According to the speed at which the lubricating oil is released from the oil storage tank, controlling the oil storage tank to release the lubricating oil to the reducer gear comprises: Determining the opening of the oil drain valve of the oil storage tank according to the speed at which the oil storage tank releases the lubricating oil; the opening is positively correlated with the speed at which the oil storage tank releases the lubricating oil; Adjust the oil drain valve to the opening.

10. The method according to claim 7, characterized in that In the case where the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear, before controlling the oil storage tank to release the lubricating oil to the reducer gear, the method further comprises: Obtaining the height of the lubricating oil in the oil storage tank and / or the height of the lubricating oil in the reducer gear measured by a sensor; The current lubricating oil amount is determined based on the level of the lubricating oil in the oil storage tank and / or the level of the lubricating oil in the reducer gear.

11. The method according to claim 10, characterized in that The method further comprises: In the event of a lubricating oil control failure in the vehicle, adjusting the opening of the oil drain valve of the oil storage tank to a maximum opening; When the opening of the oil drain valve is adjusted to the maximum opening, outputting prompt information indicating that the lubricating oil control failure occurs in the vehicle; Alternatively, when the adjustment of the opening of the oil drain valve to the maximum opening is not completed, the motor torque of the vehicle is limited to be less than a preset value, and a prompt message indicating that the lubricating oil control failure occurs in the vehicle is output.

12. The method according to claim 7, characterized in that The capacity of the oil storage tank is the difference between the maximum required oil quantity of the reducer gear and the minimum required oil quantity of the reducer gear; the maximum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the minimum driving speed and the vehicle's motor torque is the maximum motor torque; the minimum required oil quantity is the amount of lubricating oil required for the reducer gear when the vehicle's driving speed is the maximum driving speed and the vehicle's motor torque is the minimum motor torque.

13. A lubricating oil control device, characterized in that: The lubricating oil control device includes a processing module; The processing module is used to determine the required lubricating oil amount of the reducer gear of the vehicle based on the driving parameters of the vehicle; the driving parameters include driving speed and motor torque; the required lubricating oil amount is negatively correlated with the driving speed; the required lubricating oil amount is positively correlated with the motor torque; The processing module is also used to control the oil storage tank to release lubricating oil to the reducer gear when the required amount of lubricating oil is greater than the current amount of lubricating oil in the reducer gear; the oil storage tank is used to receive the lubricating oil thrown out when the reducer gear rotates.

14. A vehicle, characterized in that: The vehicle comprises the lubricating oil control device according to claim 13 , and the vehicle is used to implement the method according to any one of claims 7 to 12 .

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