Lubrication system, lubricating oil control method, device, and vehicle

Abstract

The application 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 following steps: determining the required lubricating oil amount of a reducer gear of a vehicle based on the driving parameters of the vehicle; the driving parameters comprise a driving speed and a 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; in the case that the required lubricating oil amount is greater than the current lubricating oil amount of the reducer gear, lubricating oil is released from a storage tank to the reducer gear; the storage tank is used for receiving the lubricating oil thrown out when the reducer gear rotates. Thus, the technical problem that when the lubricating oil depth of the reducer gear is large, greater resistance is brought to the operation of the reducer, the vehicle is brought greater oil stirring loss, and the energy consumption of the vehicle is increased can be solved.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, specifically to a lubrication system, lubricating oil control method, device, and vehicle. Background Technology

[0002] With the development of vehicle technology, reducing overall vehicle energy consumption has become a key focus in the industry. One factor affecting overall vehicle energy consumption is the churning loss caused by the lubricating oil in the reducer gears of the vehicle's drive system. Reducer gear lubricating oil is used to lubricate the reducer gears, reducing friction and wear between gears, preventing gear deformation or damage, and thus ensuring the normal operation of the drive system. Currently, sufficient lubrication of the reducer gears is achieved by immersing them in a relatively deep layer of lubricating oil.

[0003] However, when the depth of the lubricating oil in the reducer gear is too large, it will bring greater resistance to the operation of the reducer, resulting in greater oil churning loss for the whole vehicle, thereby increasing the energy consumption of the whole vehicle.

[0004] Document CN115742957A discloses a method for predicting transmission parameters, including input speed and input torque, based on predicted driving parameters such as vehicle speed, acceleration, and slope angle, and then obtaining the predicted lubricant demand of the transmission. However, this method targets the transmission itself to calculate the transmission's lubricant demand, while this application targets the reducer to calculate its lubricant demand. Since the transmission and reducer are two distinct components in a vehicle, this method cannot address the significant oil churning losses caused by the reducer gear lubricant. Document CN114228410B discloses that when the reducer operates at high speed, the oil flow rate from the buffer oil tank outlet is less than the oil flow rate into the buffer oil tank's lubricant inlet. However, this method only considers reducing the reducer lubricant in the gear lubrication box to decrease churning losses during high-speed operation, without considering the motor drive torque. If the motor drive torque is high at this time, it can lead to insufficient lubrication of the reducer gears. Summary of the Invention

[0005] The purpose of this invention is to provide a lubrication system, lubricating oil control method, device, and vehicle to solve the technical problem that a large depth of lubricating oil in the reducer gears leads to greater resistance during reducer operation, resulting in greater oil churning losses and increased vehicle energy consumption. The technical solution of this application is as follows:

[0006] According to a first aspect of this application, a lubrication system is provided, comprising: a controller for determining the required amount of lubricating oil for a vehicle's reducer gear based on the vehicle's driving parameters; the driving parameters include driving speed and motor torque; the required amount of lubricating oil is negatively correlated with driving speed; and the required amount of lubricating oil is positively correlated with motor torque; an oil reservoir for receiving lubricating oil ejected during the rotation of the reducer gear; and the controller further for controlling the oil reservoir 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.

[0007] In one possible implementation, the controller is further configured to acquire the vehicle's acceleration, determine the rate at which the oil reservoir releases lubricating oil based on the acceleration, and control the oil reservoir to release lubricating oil to the reducer gear according to the rate at which the oil reservoir releases lubricating oil; the rate at which the oil reservoir releases lubricating oil is positively correlated with the acceleration.

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

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

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

[0011] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

[0012] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

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

[0014] In one possible implementation, controlling the oil reservoir to release lubricating oil to the reducer gear includes: acquiring the vehicle's acceleration; determining the rate at which the oil reservoir releases lubricating oil based on the acceleration; the rate at which the oil reservoir releases lubricating oil is positively correlated with the acceleration; and controlling the oil reservoir to release lubricating oil to the reducer gear according to the rate at which the oil reservoir releases lubricating oil.

[0015] In one possible implementation, controlling the release of lubricating oil from the oil reservoir to the reducer gear according to the rate at which the oil reservoir releases lubricating oil includes: determining the opening degree of the oil drain valve of the oil reservoir according to the rate at which the oil reservoir releases lubricating oil; the opening degree being positively correlated with the rate at which the oil reservoir releases lubricating oil; and adjusting the oil drain valve to the desired opening degree.

[0016] In one possible implementation, the current lubricating oil level is determined based on the height of the lubricating oil in the reservoir and / or the lubricating oil level of the reducer gears as measured by sensors.

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

[0018] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

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

[0020] According to a third aspect provided in this application, a lubricating oil control device is provided, comprising a processing module; the processing module is configured to determine the required amount of lubricating oil for the vehicle's reducer gear based on the vehicle's driving parameters; the driving parameters include driving speed and motor torque; the required amount of lubricating oil is negatively correlated with driving speed; the required amount of lubricating oil is positively correlated with motor torque; the processing module is further configured to control an oil reservoir 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 reservoir is configured to receive lubricating oil ejected during the rotation of the reducer gear.

[0021] In one possible implementation, the lubricating oil control device further includes a transmission module; the transmission module is used to acquire the vehicle's acceleration; the processing module is also used to determine the rate at which the oil reservoir releases lubricating oil based on the acceleration; the rate at which the oil reservoir releases lubricating oil is positively correlated with the acceleration; the processing module is also used to control the oil reservoir to release lubricating oil to the reducer gear according to the rate at which the oil reservoir releases lubricating oil.

[0022] In one possible implementation, the processing module is further configured to determine the opening degree of the oil drain valve of the oil reservoir based on the rate at which the oil reservoir releases lubricating oil; the opening degree is positively correlated with the rate at which the oil reservoir releases lubricating oil; the processing module is further configured to adjust the oil drain valve to the specified opening degree.

[0023] In one possible implementation, the transmission module is further configured to acquire the height of the lubricating oil in the oil reservoir and / or the lubricating oil height of the reducer gear as measured by the sensor; the processing module is further configured to determine the current lubricating oil level based on the height of the lubricating oil in the oil reservoir and / or the lubricating oil height of the reducer gear.

[0024] In one possible implementation, the processing module is further configured to adjust the opening of the oil drain valve of the oil reservoir to the maximum opening when the oil drain valve is adjusted to the maximum opening; the processing module is further configured to output a prompt message indicating that the oil control failure has occurred when the adjustment of the oil drain valve to the maximum opening is completed; the processing module is further configured to limit the motor torque of the vehicle to less than a preset value and output a prompt message indicating that the oil control failure has occurred when the adjustment of the oil drain valve to the maximum opening is not completed.

[0025] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

[0026] According to a fourth aspect provided in this 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 second aspect described above and any possible implementation thereof.

[0027] According to the fifth aspect provided in this application, a computer-readable storage medium is provided that, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the methods of the second aspect described above and any possible implementation thereof.

[0028] According to the sixth aspect provided in this application, a vehicle is provided, including: a lubricating oil control device for implementing the second aspect described above and any possible implementation thereof.

[0029] According to the seventh aspect provided in this application, a computer program product is provided, the computer program product including computer instructions, which, when executed on an electronic device, cause the electronic device to perform the method described in the second aspect and any possible implementation thereof.

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

[0031] (1) This 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 reducer gear, and the vehicle's motor torque, which is positively correlated with the required amount of lubricating oil. Furthermore, when the required amount of lubricating oil is greater than the current amount of lubricating oil in the reducer gear, the oil reservoir that receives the lubricating oil thrown out during the rotation of the reducer gear is controlled to release 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 splashing ability of the lubricating oil is limited. To ensure sufficient lubrication of the reducer gear, a larger amount of lubricating oil is required, and vice versa. When the motor torque is high, it leads to a high load on the reducer gear. To protect the reducer gear, a larger amount of lubricating oil is required, and vice versa. The more lubricating oil, the greater the churning loss. Therefore, adjusting the lubricating oil quantity based on the required amount determined by the driving speed and motor torque can reduce oil churning losses and prevent insufficient lubrication of the reducer gears. This solves the technical problem that a large depth of lubricating oil in the reducer gears would cause greater resistance to the reducer's operation, leading to greater oil churning losses and increased vehicle energy consumption, thus reducing overall vehicle energy consumption.

[0032] (2) This application can determine the speed at which the oil reservoir releases lubricating oil to the reducer gears based on the vehicle's acceleration. That is, when the vehicle accelerates or decelerates rapidly, the load on the reducer gears will also increase rapidly. Therefore, it is necessary to release lubricating oil to the reducer gears quickly to ensure sufficient lubrication of the reducer gears in a timely manner and avoid the problem of poor lubrication of the reducer gears due to slow release of lubricating oil.

[0033] (3) This application can determine the opening degree of the oil drain valve of the oil reservoir according to the speed at which the oil reservoir releases lubricating oil. That is, the larger the opening degree of the oil drain valve of the oil reservoir is adjusted, the faster the oil reservoir releases lubricating oil, thereby realizing flexible control of the speed at which the oil reservoir releases lubricating oil. This meets the need for rapid release of lubricating oil during rapid acceleration or deceleration of the vehicle, ensuring sufficient lubrication of the reducer gears and protecting the reducer gears.

[0034] (4) This application can measure the height of the lubricating oil using a sensor, thereby calculating the current lubricating oil volume. Since the shape and size of the container holding the lubricating oil are fixed, the current lubricating oil volume can be calculated based on the oil height. This facilitates subsequent adjustment of the current lubricating oil volume according to the needs of the reducer gears, thereby avoiding insufficient lubrication of the reducer gears and reducing oil churning losses, thus reducing overall vehicle energy consumption.

[0035] (5) This application allows for adjusting the opening of the drain valve of the oil reservoir to its maximum opening when a lubricating oil control failure occurs in the vehicle. That is, when the drain valve of the oil reservoir is at its maximum opening, the lubricating oil in the oil reservoir can be released at the fastest speed. This avoids the problem of insufficient lubrication of the reducer gears due to uncontrollable or slow release of lubricating oil, thus protecting the reducer gears.

[0036] (6) This application can output a prompt message when the opening of the drain valve of the oil reservoir is adjusted to the maximum opening, reminding the vehicle owner to repair and handle the lubrication control fault. And when the opening of the drain valve of the oil reservoir is not adjusted to the maximum opening, it can limit the motor torque of the vehicle to avoid the problem that the motor torque of the vehicle is too large and cannot release enough lubricating oil to fully lubricate the reducer gears, resulting in poor lubrication of the reducer gears.

[0037] (7) This application allows the difference between the maximum and minimum required oil volume of the reducer gears to be used as the capacity of the oil reservoir. The reducer gears require the most lubricating oil when the vehicle speed is at its minimum and the motor torque is at its maximum. Similarly, the reducer gears require the least lubricating oil when the vehicle speed is at its maximum and the motor torque is at its minimum. This allows lubricating oil to be directly overflowed from the top of the oil reservoir onto the reducer gears when it is full, ensuring that the lubricating oil volume of the reducer gears is greater than or equal to the minimum required oil volume, guaranteeing sufficient lubrication of the reducer gears, without requiring other controls, thus saving computational resources.

[0038] (8) This application can determine the amount of lubricating oil required for the reducer gears when the slope of the road surface is greater. That is, when the slope of the road surface is large, the portion of the reducer gears immersed in lubricating oil may be smaller. In order to ensure sufficient lubrication of the reducer gears, the amount of lubricating oil required for the reducer gears is larger, and vice versa. This avoids insufficient lubrication of the reducer gears.

[0039] It should be noted that the technical effects of any of the implementation methods in aspects two through seven can be found in the technical effects of the corresponding implementation methods in aspect one, and will not be repeated here.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

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

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

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

[0045] Figure 4 This is a flowchart illustrating a lubricating oil control method according to an exemplary embodiment;

[0046] Figure 5 This is a schematic diagram illustrating the relationship between driving speed and lubricating oil volume according to an exemplary embodiment;

[0047] Figure 6 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment;

[0048] Figure 7 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment;

[0049] Figure 8 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment;

[0050] Figure 9 This is a block diagram illustrating a lubricating oil control device according to an exemplary embodiment;

[0051] Figure 10 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0052] The embodiments of the present invention will be described below 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 content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed 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 and 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 representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] With the development and rapid popularization of electric vehicles (including hybrid vehicles), the range of electric vehicles has always been a focus of attention in the industry. On the one hand, the range of electric vehicles can be increased by increasing battery capacity, and on the other hand, the range can be increased by reducing overall vehicle energy consumption. However, increasing battery capacity increases costs, so OEMs generally improve range by reducing overall vehicle energy consumption. To reduce overall vehicle energy consumption, one can reduce fuel consumption in hybrid vehicles. For consumers, reduced overall vehicle energy consumption can effectively lower operating costs. One factor contributing to the high overall energy consumption of electric vehicles is the oil churning loss in the gearbox lubricating oil of the drive system.

[0055] However, a deeper layer of lubricating oil in the reducer gears increases resistance to reducer operation, leading to greater oil churning losses and increased overall vehicle energy consumption. Specifically, under normal circumstances, the lubricating oil in an electric vehicle's reducer only needs to partially submerge the gears. The centrifugal force generated during gear operation propels the oil outwards, splashing it onto the unsubmerged gears and bearings to lubricate them. However, at low vehicle speeds, the reducer gears operate at low speeds, limiting the splashing ability of the lubricating oil. In this case, the reducer gears need to be submerged in deeper lubricating oil for thorough lubrication. Furthermore, at higher motor torque levels, the reducer gears are under greater load, requiring a larger volume of lubricating oil to protect them. Again, this necessitates deeper immersion in lubricating oil for adequate lubrication. Conversely, when the vehicle speed is high and the motor torque is low, less lubricating oil is needed. This excess lubricating oil will bring greater resistance to the operation of the reducer, which means more oil churning loss to the whole vehicle, reducing the power transmission efficiency of the reducer, and thus increasing the energy consumption of the whole vehicle.

[0056] To address the aforementioned issues and reduce oil churning losses while ensuring adequate lubrication of the reducer gears, this application proposes a lubrication control method. During vehicle operation, the method adjusts the amount of lubricating oil in the reducer gears in real time based on information such as engine torque, driving speed, and gradient. This solves the problem in related technologies where a large depth of lubricating oil in the reducer gears leads to greater resistance during reducer operation, resulting in significant oil churning losses and increased vehicle energy consumption.

[0057] For ease of understanding, the lubrication system and lubricating oil control method provided in this application will be described in detail below with reference to the accompanying drawings.

[0058] Figure 1This is a schematic diagram illustrating the structure of a lubrication system according to an exemplary embodiment. The lubrication system 10 includes: a controller (also called a microcontroller unit (MCU)) and a reducer housing 11. The reducer housing 11 includes: an oil reservoir 111 and a reducer gear 112. An oil drain valve 1111 is provided on the oil reservoir 111. A level transmitter (LT) 1112 is provided in the area where the oil reservoir 111 or the reducer gear 112 is located. The controller is not shown in the figure.

[0059] Optionally, the oil reservoir 111 can be a container of any shape to allow for rapid release of lubricating oil when the drain valve 1111 is opened. To facilitate the collection and rapid release of lubricating oil from the oil reservoir 111, its height can be designed to be as high as possible, provided the volume of the oil reservoir 111 is already determined and there is sufficient space within the reducer housing 11. To facilitate the collection of lubricating oil from the oil reservoir 111, the container opening can be designed as an open shape.

[0060] The inlet of the oil reservoir 111 is responsible for collecting the gearbox lubricating oil that needs to be temporarily stored. Therefore, the inlet of the oil reservoir 111 should be positioned so that the gearbox lubricating oil ejected by the centrifugal force generated by the rotation of the gearbox gear 112 when the vehicle is in motion can effectively fall into the oil reservoir 111. The bottom of the oil reservoir 111 should be higher than the lubricating oil level of the gearbox gear 112 when the lubricating oil in the oil reservoir 111 has been completely drained.

[0061] The reducer gear 112 is a large disc gear on the intermediate shaft. It is the first stage reduction gear that the output shaft of the vehicle's drive motor passes through. It has a large radius and the highest rotational speed besides the reducer input shaft. With its large radius and high speed, when it rotates, it can drive the lubricating oil in the bottom reducer along the tangential direction of the gear's rotation, and through centrifugal force, it can be thrown out and detached from the gear. Figure 1 The direction the arrow points indicates the direction in which the lubricating oil is ejected.

[0062] The drain valve 1111 can be a drain baffle or other valve device that controls the release of lubricating oil from the oil reservoir 111. The drain valve 1111 can be positioned at the lowest point of the oil reservoir 111, allowing all lubricating oil to flow out when it is open. When the drain valve 1111 is a drain baffle, it can open downwards, and during downward opening, it must not interfere with other structures throughout its entire stroke. This downward opening ensures that the drain baffle remains naturally open in case of a malfunction in the drain baffle control mechanism (i.e., the control motor). Drain valves 1111 of other structures also need to have similar functions to ensure sufficient lubricating oil in the area where the reducer gears are located to support vehicle operation under all conditions in the event of a malfunction in the oil reservoir 111 control.

[0063] Sensor 1112 can be a float-type liquid level sensor or any other sensor capable of accurately measuring the level of lubricating oil in oil tank 111. Sensor 1112 can be arranged inside oil tank 111, in the area where reducer gear 112 is located, or simultaneously in the areas where oil tank 111 and reducer gear 112 are located. In this way, sensor 1112 can measure the liquid level in oil tank 111 from empty to full and / or the lubricating oil level in reducer gear, and can send the lubricating oil level to the controller.

[0064] The lubricating oil control method provided in this application embodiment can be applied to lubricating oil control systems. Figure 2 This is a schematic diagram illustrating the structure of a lubricating oil control system according to an exemplary embodiment. Figure 2 As shown, the lubricating oil control system includes: controller 21 (i.e. Figure 1 The controller in the middle), the vehicle control unit (VCU) 22, and the sensor 23 (i.e. Figure 1 The sensor 1112 and the control motor 24 are included.

[0065] Controller 21 is the control center of this lubricating oil control system. It needs to acquire relevant signals from the vehicle controller 22 and sensors 23, and then control the motor 24 to perform actions through a specific control program. Specifically, the vehicle controller 22 is used to collect the vehicle's driving parameters and send them to controller 21; the sensor 23 is used to measure the level of lubricating oil in the reservoir (also known as the lubricating oil depth) and / or the lubricating oil level of the reducer gears, and sends the level of lubricating oil in the reservoir and / or the lubricating oil level of the reducer gears to controller 21 via electrical signals. Controller 21 is used to calculate the current lubricating oil level of the reducer gears based on the level of lubricating oil in the reservoir and / or the lubricating oil level of the reducer gears, receive the vehicle's driving parameters sent by the vehicle controller 22, determine the required amount of lubricating oil for the reducer gears based on the driving parameters, and, if the required amount of lubricating oil is greater than the current amount of lubricating oil for the reducer gears, control the motor 24 to release lubricating oil from the reservoir to the reducer gears.

[0066] Optionally, the controller 21 controls the action of the control motor 24. The control motor 24 can be a stepper motor that can obtain the rotational position of the motor shaft in real time, or other motor systems that can obtain the rotational position of the motor shaft in real time and can precisely control its stopping position through the MCU.

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

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

[0069] Figure 4 This is a flowchart illustrating a lubricating oil control method according to an exemplary embodiment, such as... Figure 4 As shown, applied to a controller, this lubricating oil control method includes steps S201-S202:

[0070] S201. Based on the vehicle's driving parameters, determine the required amount of lubricating oil for the vehicle's reducer gears.

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

[0072] Optionally, during vehicle operation, the vehicle's VCU can collect vehicle driving parameters and send these parameters to the vehicle's MCU. The MCU can determine the required amount of lubricating oil for the vehicle's reducer gears based on these driving parameters, either by consulting a first preset table or using a preset formula. The first preset table may include the required amount of lubricating oil for the reducer gears at all driving speeds and all motor torques.

[0073] It should be noted that at low vehicle speeds, the reducer gears operate at lower speeds, resulting in limited oil splashing. Therefore, to ensure adequate lubrication of the reducer gears, a larger amount of lubricating oil is required, and vice versa. The lower the vehicle speed, the more lubricating oil the reducer gears require, and the less lubricating oil is in the reservoir. Conversely, the higher the vehicle speed, the less lubricating oil the reducer gears require, and the more lubricating oil is in the reservoir. Figure 5 As shown, the higher the vehicle's speed, the more lubricating oil is in the reservoir. During the process of increasing the vehicle's speed from 20 km / h to 120 km / h, the amount of lubricating oil in the reservoir increases from 0 to 100%.

[0074] Similarly, when the motor torque is high, the reducer gears will be under heavy load. To protect the reducer gears, more lubricating oil is required, and vice versa. Therefore, in the first preset table, the lower the driving speed and the higher the motor torque, the more lubricating oil the reducer gears require, and the less lubricating oil is in the oil tank, and vice versa.

[0075] For example, typically, a vehicle's speed ranges from 20 km / h to 120 km / h, and its motor torque ranges from 100 Nm to 300 Nm. The total amount of lubricating oil in the vehicle's reducer gears is 120 ml. Therefore, we can assume that at a vehicle speed of 20 km / h and a motor torque of 300 Nm, the required lubricating oil volume for the reducer gears is 120 ml; at a vehicle speed of 50 km / h and a motor torque of 200 Nm, the required lubricating oil volume is 80 ml; and at a vehicle speed of 120 km / h and a motor torque of 100 Nm, the required lubricating oil volume for the reducer gears is 30 ml.

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

[0077] Optionally, depending on the location of the reducer on the vehicle, the depth to which the reducer gears are immersed in the lubricating oil will vary when the vehicle is on different slopes. Therefore, the MCU can adjust the amount of oil in the oil reservoir appropriately based on the arrangement of the vehicle's reducer and the detected slope of the road to ensure that the reducer gears have sufficient lubricating oil when driving on slopes.

[0078] It should be noted that, generally speaking, a steeper slope results in less of the reducer gear being submerged in lubricating oil. To protect the reducer gear, more lubricating oil is required, and vice versa. Therefore, in the first preset table, the steeper the slope, the more lubricating oil the reducer gear requires, and the less lubricating oil is in the reservoir, and vice versa.

[0079] This application allows for determining the required amount of lubricating oil for the reducer gears as the road surface gradient increases. Specifically, a steeper gradient may result in less lubricating oil being immersed in the reducer gears, thus requiring more lubricating oil to ensure adequate lubrication. Conversely, a shallower gradient requires less lubricating oil. This prevents insufficient lubrication of the reducer gears.

[0080] In one possible implementation, the MCU can acquire the lubricating oil level in the reservoir and / or the lubricating oil level in the reducer gears as measured by sensors. Based on the lubricating oil level in the reservoir and / or the lubricating oil level in the reducer gears, the MCU can determine the current lubricating oil level.

[0081] Optionally, during vehicle operation, sensors in the area containing the oil reservoir and / or the reducer gears can measure the level of lubricating oil in the oil reservoir and / or the level of lubricating oil in the reducer gears in real time, and send this information to the MCU. Based on the levels of lubricating oil in the oil reservoir and / or the reducer gears, the MCU can determine the current lubricating oil level. This current lubricating oil level is the amount of lubricating oil in the area containing the reducer gears, used for lubricating the reducer gears.

[0082] Optionally, since the bottom area of ​​the oil reservoir is usually fixed, the MCU can determine the amount of lubricating oil in the oil reservoir by multiplying the bottom area of ​​the oil reservoir by the height of the lubricating oil in the oil reservoir. 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 gears is fixed. When only the amount of lubricating oil in the reservoir is known, the amount of lubricating oil in the area where the reducer gears are located can be obtained by subtracting the amount of lubricating oil in the reservoir from the total amount of lubricating oil in the vehicle's reducer gears.

[0084] This application uses a sensor to measure the level of the lubricating oil, thereby calculating the current lubricating oil volume. Since the shape and size of the container holding the lubricating oil are fixed, the current lubricating oil volume can be calculated based on the oil level. This allows for subsequent adjustment of the lubricating oil volume according to the needs of the reducer gears, avoiding insufficient lubrication of the reducer gears while reducing oil churning losses, thus lowering overall vehicle energy consumption.

[0085] S202. When the required amount of lubricating oil is greater than the current amount of lubricating oil in the reducer gear, control the oil reservoir to release lubricating oil into the reducer gear.

[0086] The oil reservoir is used to receive the lubricating oil thrown out when the gears of the reducer rotate.

[0087] Optionally, if the required lubricating oil level is greater than the current lubricating oil level in the reducer gears, the MCU can send a signal to the control motor to open the drain valve. The control motor rotates according to this signal, causing the drain valve in the oil reservoir to open and release lubricating oil into the reducer gears, thus bringing the current lubricating oil level to the required level. When the current lubricating oil level in the reducer gears reaches the required level, the MCU can send a signal to the control motor to close the drain valve. The control motor rotates according to this signal, causing the drain valve in the oil reservoir to close and stopping the release of lubricating oil into the reducer gears.

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

[0089] This application determines the required amount of lubricating oil for the reducer gears based on the vehicle's travel speed, which is negatively correlated with the required amount of lubricating oil, and the vehicle's motor torque, which is positively correlated with the required amount of lubricating oil. Furthermore, when the required amount of lubricating oil exceeds the current amount of lubricating oil in the reducer gears, the application controls the oil reservoir that receives lubricating oil splashed out during the reducer gears' rotation to release lubricating oil to the reducer gears. That is, at low vehicle speeds, the reducer gears operate at lower speeds, resulting in limited lubricating oil splashing. To ensure sufficient lubrication of the reducer gears, a larger amount of lubricating oil is required, and vice versa. At high motor torques, the reducer gears are under heavy load, requiring a larger amount of lubricating oil to protect them, and vice versa. More lubricating oil results in greater churning losses. Therefore, adjusting the lubricating oil amount based on the required amount determined by the travel speed and motor torque reduces churning losses and prevents insufficient lubrication of the reducer gears. This solves 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, resulting in greater oil churning loss and increased energy consumption of the whole vehicle, thereby reducing the energy consumption of the whole vehicle.

[0090] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

[0091] Optionally, the maximum required oil volume for the reducer gear can be the theoretical amount of lubricating oil required by the reducer when the vehicle is traveling at its lowest speed (i.e., minimum travel speed) and under full throttle acceleration (when the vehicle's motor torque is at its maximum) without any lubricating oil stored in the oil tank.

[0092] The minimum required oil volume for the reducer gears can be defined as the amount of lubricating oil needed when the vehicle is traveling at a constant high speed on a flat surface (i.e., at maximum speed and minimum motor torque). Assuming the oil reservoir is empty, its capacity should be the difference between the maximum and minimum required oil volumes for the reducer gears. The reservoir capacity should be the same as this calculated difference. This ensures that when the vehicle is maintaining high speed, if the lubricating oil in the reservoir has reached its maximum capacity, there is no need to open the drain valve; the lubricating oil splashed from the reducer gears can simply overflow from the top of the reservoir.

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

[0094] This application allows the difference between the maximum and minimum required oil volume of the reducer gears to be used as the capacity of the oil reservoir. The reducer gears require the most lubricating oil when the vehicle speed is at its minimum and the motor torque is at its maximum. Conversely, the reducer gears require the least lubricating oil when the vehicle speed is at its maximum and the motor torque is at its minimum. This allows lubricating oil to be directly overflowed from the top of the reservoir onto the reducer gears when it is full, ensuring that the lubricating oil volume is greater than or equal to the minimum required volume, guaranteeing adequate lubrication of the reducer gears without requiring additional control and saving computational resources.

[0095] Figure 6 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment, such as... Figure 6 As shown, before "controlling the oil reservoir to release lubricating oil to the reducer gear" in step S202 above, the method further includes S301-S303:

[0096] S301, Obtain the vehicle's acceleration.

[0097] Optionally, during vehicle operation, the vehicle's VCU can collect the vehicle's acceleration in real time and send the acceleration data to the vehicle's MCU. The vehicle's MCU can then receive the vehicle's acceleration data.

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

[0099] Among them, the speed at which the lubricating oil is released from the oil reservoir is positively correlated with the acceleration.

[0100] Optionally, the vehicle's MCU can determine the rate at which lubricating oil is released from the reservoir based on acceleration by consulting a second preset table. The second preset table stores the lubricating oil release rate corresponding to the acceleration of all vehicles.

[0101] It should be noted that during rapid acceleration or deceleration of the vehicle (i.e., when the vehicle's acceleration is significant), the load on the reducer gears also increases rapidly, thus requiring a rapid release of lubricating oil to the reducer gears. Therefore, in the second preset table, the greater the vehicle's acceleration, the faster the lubricating oil is released.

[0102] S303. Control the oil reservoir to release lubricating oil to the reducer gear according to the speed at which the oil reservoir releases lubricating oil.

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

[0104] This application allows for determining the rate at which lubricating oil is released from the reservoir to the reducer gears based on the vehicle's acceleration. Specifically, during rapid acceleration or deceleration, the load on the reducer gears increases dramatically, necessitating rapid lubrication to ensure adequate lubrication and prevent poor lubrication caused by slow oil release.

[0105] Figure 7 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment, such as... Figure 7 As shown, the method in step S303 above specifically includes S401-S402:

[0106] S401. Determine the opening degree of the oil drain valve of the oil reservoir based on the rate at which the lubricating oil is released from the oil reservoir.

[0107] The opening degree is positively correlated with the speed at which the oil reservoir releases lubricating oil.

[0108] S402. Adjust the drain valve to the open position.

[0109] Optionally, the vehicle's MCU can determine the opening degree of the oil drain valve of the oil reservoir based on the rate at which lubricating oil is released from the reservoir. The larger the opening degree of the drain valve, the larger the drain hole opening, and the faster the oil is released from the reservoir.

[0110] Once the opening degree of the drain valve in the oil reservoir is determined, the MCU can send a signal to the control motor to open the drain valve. This signal includes the desired opening degree of the drain valve. Furthermore, the control motor rotates according to the signal, causing the drain valve in the oil reservoir to open to the desired degree, thus releasing the lubricating oil at the appropriate speed.

[0111] For example, when the 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 drain hole opening and achieving the purpose of releasing the lubricating oil in the oil tank at different rates (i.e. speeds).

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

[0113] This application allows for adjusting the opening of the oil drain valve of the oil reservoir based on the rate at which lubricating oil is released. A larger opening of the drain valve results in a faster release of lubricating oil, enabling flexible control of the oil release rate. This meets the need for rapid lubrication of the reducer gears during rapid acceleration or deceleration, thus protecting the reducer gears.

[0114] Figure 8 This is a flowchart illustrating yet another lubricating oil control method according to an exemplary embodiment, such as... Figure 8 As shown, the method also includes S501-S502 or S501-S503:

[0115] S501. In the event of a lubrication control failure in the vehicle, adjust the opening of the drain valve of the reservoir to the maximum opening.

[0116] Optionally, during vehicle operation, the control motor can provide real-time feedback on the opening degree of the drain valve to the MCU. The MCU can then diagnose whether a lubrication control fault has occurred in the vehicle based on information such as the drain valve opening degree, the lubricating oil level in the reservoir, and / or the lubricating oil level in the reducer gears. Lubrication control faults include at least one of the following: failure of the reservoir drain valve (i.e., the drain valve does not operate), sensor failure (i.e., the sensor does not operate), or power failure of the control motor. Furthermore, if the MCU detects a lubrication control fault, it can adjust the opening degree of the reservoir drain valve to its maximum. Adjusting the drain valve to its maximum opening degree can be achieved through gravity or by adjusting the control motor, resulting in a fully open state.

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

[0118] This application allows for adjusting the opening of the oil drain valve in the oil reservoir to its maximum opening when a lubricating oil control malfunction occurs in the vehicle. That is, when the oil drain valve is at its maximum opening, the lubricating oil in the reservoir can be released as quickly as possible. This avoids the problem of insufficient lubrication of the reducer gears due to uncontrolled or slow oil release, thus protecting the reducer gears.

[0119] S502. When the opening of the drain valve is adjusted to the maximum opening, output a prompt message indicating that the vehicle has experienced a lubrication control fault.

[0120] Optionally, the MCU can determine in real time whether the drain valve is at its maximum opening based on information such as the opening degree of the drain valve and the level of lubricating oil in the reservoir. For example, if the drain valve is at its maximum opening (i.e., the drain valve is fully open), or the level of lubricating oil in the reservoir is 0, the MCU determines that the drain valve is at its maximum opening and confirms that adjusting the drain valve to its maximum opening is complete. Otherwise, the MCU determines that adjusting the drain valve to its maximum opening is incomplete.

[0121] Once the MCU determines that the adjustment of the drain valve opening to the maximum opening has been completed, the MCU can send a "Reducer Lubricating Oil Intelligent Control System Fault Level 1" prompt message to the vehicle's VCU (i.e., a prompt message indicating a lubricating oil control fault in the vehicle). At this time, the vehicle can be driven normally, and the MCU can illuminate the vehicle's ordinary warning malfunction light to remind the user to drive the vehicle to a service station for inspection and repair as soon as possible.

[0122] S503. If the opening of the drain valve is not fully adjusted to the maximum opening, the motor torque of the vehicle is limited to a preset value, and a prompt message indicating that the vehicle has experienced a lubrication control fault is output.

[0123] Optionally, if the MCU determines that the adjustment of the drain valve opening to the maximum opening has not been completed, the MCU cannot determine whether the adjustment of the drain valve opening to the maximum opening has been completed, or the MCU determines that the drain valve is closed and cannot be opened, the MCU limits the vehicle's motor torque to less than a preset value and sends a "Reducer Lubricating Oil Intelligent Control System Fault Level 2" message (i.e., a lubricating oil control fault message) to the vehicle's VCU. Furthermore, the MCU can illuminate the vehicle's standard warning light to remind the user to drive the vehicle to a service station for inspection and repair as soon as possible. This limits the motor drive torque, restricting the vehicle's power to prevent insufficient lubrication of the reducer gears due to high motor torque, thus avoiding problems such as inadequate lubrication of the reducer gears.

[0124] This application can output a prompt message when the oil drain valve of the oil reservoir is fully opened to its maximum position, reminding the vehicle owner to repair and address the lubrication control fault. Furthermore, when the oil drain valve of the oil reservoir is not fully opened to its maximum position, it can limit the vehicle's motor torque to prevent insufficient lubrication of the reducer gears due to excessive motor torque, thus avoiding problems such as inadequate lubrication of the reducer gears.

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

[0126] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the lubricating oil control device or electronic device includes corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0127] This application embodiment can, according to the above method, exemplarily divide a lubricating oil control device or electronic device into functional modules. For example, the lubricating oil control device or electronic device may include functional modules corresponding to each functional division, or two or more functions may be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in the current implementation.

[0128] Figure 9 This is a block diagram illustrating a lubricating oil control device according to an exemplary embodiment. (Refer to...) Figure 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 vehicle's reducer gears based on the vehicle's driving parameters, including driving speed and motor torque; the required amount of lubricating oil is negatively correlated with driving speed and positively correlated with motor torque; the processing module 1101 is also used to control the oil reservoir to release lubricating oil to the reducer gears when the required amount of lubricating oil is greater than the current amount of lubricating oil in the reducer gears; the oil reservoir is used to receive the lubricating oil thrown out when the reducer gears rotate.

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

[0131] In one possible implementation, the processing module 1101 is further configured to determine the opening degree of the oil drain valve of the oil reservoir based on the speed at which the oil reservoir releases lubricating oil; the opening degree is positively correlated with the speed at which the oil reservoir releases lubricating oil; the processing module 1101 is further configured to adjust the oil drain valve to the specified opening degree.

[0132] In one possible implementation, the transmission module 1102 is further configured to acquire the height of the lubricating oil in the oil reservoir and / or the lubricating oil height of the reducer gear as measured by the sensor; the processing module 1101 is further configured to determine the current lubricating oil level based on the height of the lubricating oil in the oil reservoir and / or the lubricating oil height of the reducer gear.

[0133] In one possible implementation, the processing module 1101 is further configured to adjust the opening of the oil drain valve of the oil reservoir to the maximum opening when the oil drain valve is adjusted to the maximum opening; the processing module 1101 is further configured to output a prompt message indicating that the vehicle has experienced a lubricating oil control failure when the adjustment of the oil drain valve to the maximum opening is completed; the processing module 1101 is further configured to limit the motor torque of the vehicle to a preset value and output a prompt message indicating that the vehicle has experienced a lubricating oil control failure when the adjustment of the oil drain valve to the maximum opening is not completed.

[0134] In one possible implementation, the capacity of the oil reservoir is the difference between the maximum required oil volume of the reducer gear and the minimum required oil volume of the reducer gear; the maximum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its minimum travel speed and the vehicle's motor torque is at its maximum motor torque; the minimum required oil volume is the amount of lubricating oil required by the reducer gear when the vehicle's travel speed is at its maximum travel speed and the vehicle's motor torque is at its minimum motor torque.

[0135] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0136] Figure 10 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Figure 10As shown, the electronic device 130 includes, but is not limited to, a processor 1301 and a memory 1302.

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

[0138] It should be noted that those skilled in the art will understand that Figure 10 The electronic device structure shown does not constitute a limitation on the electronic device; the electronic device may include, but is not limited to, other electronic devices. Figure 10 This may indicate more or fewer components, or combinations of certain components, or different component arrangements.

[0139] Processor 1301 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in memory 1302, and by calling data stored in memory 1302, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. Processor 1301 may include one or more processing modules 1101. Optionally, processor 1301 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into processor 1301.

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

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

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

[0143] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a read-only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

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

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

[0146] It should be noted that when one or more instructions in the computer-readable storage medium or computer program product are executed by the processor of the electronic device, they implement the various processes of the above-described lubricating oil control method embodiments and achieve the same technical effects as the above-described lubricating oil control method. To avoid repetition, they will not be described again here.

[0147] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In the current application, the above 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 all or part of the functions described above.

[0148] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and other division methods may exist in the current implementation. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0149] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the sub-units can be selected to achieve the purpose of this embodiment, depending on current needs.

[0150] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0151] If the integrated unit is implemented as 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 embodiments of this application, essentially, or the part that contributes to the prior art, or a complete or partial classification of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0152] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lubrication system characterized in that, The system comprises: a controller configured to determine a required lubricating oil amount of a reducer gear of a vehicle based on driving parameters of the vehicle, the driving parameters comprising a driving speed and a motor torque, the required lubricating oil amount being negatively correlated with the driving speed, and the required lubricating oil amount being positively correlated with the motor torque; a lubricating oil tank configured to receive the lubricating oil thrown out by the reducer gear during rotation of the reducer gear; the controller is further configured to control the lubricating oil tank to release the lubricating oil to the reducer gear when the required lubricating oil amount is greater than a current lubricating oil amount of the reducer gear; the controller is further configured to obtain an acceleration of the vehicle, determine a speed of the lubricating oil released by the lubricating oil tank based on the acceleration, and control the lubricating oil tank to release the lubricating oil to the reducer gear according to the speed of the lubricating oil released by the lubricating oil tank, the speed of the lubricating oil released by the lubricating oil tank being positively correlated with the acceleration.

2. The system of claim 1, wherein, the lubricating oil tank is provided with a lubricating oil drain valve, and the controller is further configured to determine an opening degree of the lubricating oil drain valve of the lubricating oil tank according to the speed of the lubricating oil released by the lubricating oil tank, and adjust the lubricating oil drain valve to the opening degree, the opening degree being positively correlated with the speed of the lubricating oil released by the lubricating oil tank.

3. The system of claim 1, wherein, a sensor is arranged in an area where the lubricating oil tank and / or the reducer gear is located, and the sensor is configured to measure a height of the lubricating oil in the lubricating oil tank and / or a lubricating oil height of the reducer gear, and the controller is further configured to determine the current lubricating oil amount based on the height of the lubricating oil in the lubricating oil tank and / or the lubricating oil height of the reducer gear.

4. The system of claim 3, wherein, the controller is further configured to adjust the opening degree of the lubricating oil drain valve of the lubricating oil tank to a maximum opening degree when the vehicle has a lubricating oil control fault, and the controller is further configured to output prompt information that the vehicle has the lubricating oil control fault when the adjustment of the opening degree of the lubricating oil drain valve of the lubricating oil tank to the maximum opening degree is completed, or limit the motor torque of the vehicle to be less than a preset value and output the prompt information that the vehicle has the lubricating oil control fault when the adjustment of the opening degree of the lubricating oil drain valve of the lubricating oil tank to the maximum opening degree is not completed.

5. The system of claim 1, wherein, a capacity of the lubricating oil tank is a difference between a maximum required oil amount of the reducer gear and a minimum required oil amount of the reducer gear, the maximum required oil amount being a lubricating oil amount required by the reducer gear when the driving speed of the vehicle is a minimum driving speed and the motor torque of the vehicle is a maximum motor torque, and the minimum required oil amount being a lubricating oil amount required by the reducer gear when the driving speed of the vehicle is a maximum driving speed and the motor torque of the vehicle is a minimum motor torque.

6. A lubricating oil control method characterized by, The method comprises: determining a required lubricating oil amount of a reducer gear of a vehicle based on driving parameters of the vehicle, the driving parameters comprising a driving speed and a motor torque, the required lubricating oil amount being negatively correlated with the driving speed, and the required lubricating oil amount being positively correlated with the motor torque; In a case that the required lubricating oil amount is greater than a current lubricating oil amount of the reduction gear, control the oil tank to release lubricating oil to the reduction gear; the oil tank is used to receive the lubricating oil thrown out by the reduction gear during rotation; The control of the oil tank to release lubricating oil to the reduction gear comprises: Obtain the acceleration of the vehicle; Determine the speed of the oil tank to release the lubricating oil based on the acceleration; the speed of the oil tank to release the lubricating oil is positively correlated with the acceleration; Control the oil tank to release the lubricating oil to the reduction gear according to the speed of the oil tank to release the lubricating oil.

7. The method of claim 6, wherein, The control of the oil tank to release the lubricating oil to the reduction gear according to the speed of the oil tank to release the lubricating oil comprises: Determine the opening of the drain valve of the oil tank according to the speed of the oil tank to release the lubricating oil; the opening is positively correlated with the speed of the oil tank to release the lubricating oil; Adjust the drain valve to the opening.

8. The method of claim 6, wherein, Before the control of the oil tank to release lubricating oil to the reduction gear in a case that the required lubricating oil amount is greater than a current lubricating oil amount of the reduction gear, the method further comprises: Obtain the height of the lubricating oil in the oil tank and / or the lubricating oil height of the reduction gear measured by a sensor; Determine the current lubricating oil amount based on the height of the lubricating oil in the oil tank and / or the lubricating oil height of the reduction gear.

9. The method of claim 8, wherein, The method further comprises: In a case that the vehicle occurs a lubricating oil control failure, adjust the opening of the drain valve of the oil tank to a maximum opening; In a case that the adjustment of the opening of the drain valve to the maximum opening is completed, output prompt information that the vehicle occurs the lubricating oil control failure; Or, in a case that the adjustment of the opening of the drain valve to the maximum opening is not completed, limit the motor torque of the vehicle to be less than a preset value, and output prompt information that the vehicle occurs the lubricating oil control failure.

10. The method of claim 6, wherein, The capacity of the oil tank is the difference between a maximum required oil amount of the reduction gear and a minimum required oil amount of the reduction gear; the maximum required oil amount is the lubricating oil amount required by the reduction gear in a case that the driving speed of the vehicle is a minimum driving speed and the motor torque of the vehicle is a maximum motor torque; the minimum required oil amount is the lubricating oil amount required by the reduction gear in a case that the driving speed of the vehicle is a maximum driving speed and the motor torque of the vehicle is a minimum motor torque.

11. A lubricating oil control device characterized by comprising: The lubricating oil control device comprises a processing module and a transmission module; The processing module is configured to determine a required lubricating oil amount of a reduction gear of a vehicle based on driving parameters of the vehicle; the driving parameters comprise a driving speed and a 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 further configured to control the oil tank to release the lubricating oil to the reduction gear in a case where the required lubricating oil amount is greater than a current lubricating oil amount of the reduction gear; and the oil tank is configured to receive the lubricating oil thrown out by the reduction gear during rotation. The transmission module is configured to acquire an acceleration of the vehicle. The processing module is further configured to determine a speed at which the oil tank releases the lubricating oil based on the acceleration; and the speed at which the oil tank releases the lubricating oil is positively correlated with the acceleration. The processing module is further configured to control the oil tank to release the lubricating oil to the reduction gear according to the speed at which the oil tank releases the lubricating oil.

12. A vehicle characterized by comprising: The vehicle comprises the lubricating oil control device according to claim 11, and is configured to implement the method according to any one of claims 6 to 10.

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