Lubricant oil pump control method, device, equipment, medium, program and vehicle

Abstract

The invention relates to an oil pump control method, device, equipment, medium, program and vehicle for a lubricant, and relates to the technical field of electric pumps, the method comprises the steps that a corresponding lubricant temperature is determined according to the vehicle speed and a calibrated mapping relation in response to the fact that a disengaging mechanism is in a disengaging state, and the mapping relation comprises the corresponding relation between the vehicle speed and the lubricant temperature; and according to the magnitude relation between the lubricant temperature and the preset lubricant temperature, the operation parameters of the oil pump are adjusted, and the operation parameters comprise at least one of the oil pump pumping amount, the oil pump operation duration, the oil pump pumping time interval, the oil pump set rotating speed and the oil pump set power. According to the embodiment of the invention, the overall operation power consumption of the oil pump control system of the lubricant is obviously reduced, and the lubrication safety in extremely high and low temperature environments can still be ensured without depending on a traditional oil temperature sensor.

Description

Technical Field

[0001] This disclosure relates to the field of electric pump technology, and more specifically, to a method, apparatus, equipment, medium, procedure, and vehicle for controlling a lubricant oil pump. Background Technology

[0002] In related technologies, lubricants are the lifeline of vehicle transmission systems. They significantly reduce wear and frictional power consumption by forming a protective oil film between moving parts, effectively dissipating heat generated by gears, bearings, etc., preventing localized overheating failure. Furthermore, they can remove wear debris and coat metal surfaces to resist corrosion. In highly integrated electric drive systems, the precise delivery and management of lubricants directly impacts transmission efficiency, NVH performance, component lifespan, and system reliability. Especially under complex operating conditions such as disengagement mechanisms, achieving sensorless, full-temperature-range intelligent lubrication is a key technological challenge for ensuring the system's sustained and efficient operation. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a method, apparatus, equipment, medium, procedure and vehicle for controlling a lubricant oil pump.

[0004] According to a first aspect of the present disclosure, a method for controlling a lubricant oil pump is provided, the method comprising: In response to the disengagement mechanism being in the disengaged state, the corresponding lubricant temperature is determined based on the vehicle speed and the calibrated mapping relationship. The mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; The operating parameters of the oil pump are adjusted according to the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping interval, oil pump set speed, and oil pump set power.

[0005] In some exemplary embodiments of this disclosure, in response to the disengagement mechanism being in a disengaged state, determining the corresponding lubricant temperature based on the vehicle speed and a calibrated mapping relationship includes: In response to the disengagement mechanism being in the disengaged state, the vehicle speed and the measured rotational speed of the oil pump are collected; The corresponding lubricant temperature is determined based on the vehicle speed, the measured rotational speed, and the mapping relationship.

[0006] In some exemplary embodiments of this disclosure, determining the corresponding lubricant temperature based on the vehicle speed, the measured rotational speed, and the mapping relationship includes: Based on the vehicle speed and the first mapping relationship, the preset speed and preset power of the corresponding oil pump are determined. The first mapping relationship includes the correspondence between the calibrated vehicle speed, the preset rotational speed, and the preset power. The measured rotational speed of the oil pump is collected, and the speed difference between the measured rotational speed and the preset rotational speed is determined. Based on the speed difference, the preset power, and the second mapping relationship, the corresponding lubricant temperature is determined. The second mapping relationship includes the correspondence between the calibrated speed difference, the power, and the lubricant temperature.

[0007] In some exemplary embodiments of this disclosure, in the first mapping relationship, the vehicle speed and the preset rotational speed are positively correlated, and / or the vehicle speed and the preset power are positively correlated.

[0008] In some exemplary embodiments of this disclosure, in the second mapping relationship, the speed difference and the lubricant temperature are negatively correlated, and / or the speed difference and the preset power are positively correlated.

[0009] In some exemplary embodiments of this disclosure, adjusting the operating parameters of the oil pump based on the relationship between the lubricant temperature and a preset lubricant temperature includes: Determine whether the lubricant temperature is less than or equal to the preset lubricant temperature; In response to the lubricant temperature being less than or equal to the preset lubricant temperature, it is determined that the lubricant will be pumped in a continuous lubrication mode.

[0010] In some exemplary embodiments of this disclosure, adjusting the operating parameters of the oil pump based on the relationship between the lubricant temperature and a preset lubricant temperature further includes: Determine whether the temperature of the lubricant is greater than the preset lubricant temperature; In response to the lubricant temperature being greater than the preset lubricant temperature, it is determined that the lubricant will be pumped in an intermittent lubrication mode.

[0011] In some exemplary embodiments of this disclosure, the lubricant oil pump control method further includes: The viscosity and temperature of the lubricant are tested, and the lubricant viscosity and temperature are calibrated based on the test results. The temperature corresponding to the inflection point of the lubricant viscosity is determined to determine the preset lubricant temperature.

[0012] In some exemplary embodiments of this disclosure, the intermittent lubrication method includes: the lubricant temperature being negatively correlated with the pumping rate of the oil pump; and / or the lubricant temperature being negatively correlated with the set rotational speed of the oil pump; and / or the lubricant temperature being negatively correlated with the set power of the oil pump; and / or the lubricant temperature being negatively correlated with the operating time of the oil pump; and / or the lubricant temperature being positively correlated with the pumping time interval of the oil pump.

[0013] According to a second aspect of the present disclosure, a lubricant oil pump control device is provided, comprising: A temperature determination unit is used to determine the corresponding lubricant temperature based on the vehicle speed and a calibrated mapping relationship in response to the disengagement mechanism being in the disengaged state. The mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; The parameter adjustment unit is used to adjust the operating parameters of the oil pump based on the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping interval, oil pump set speed, and oil pump set power.

[0014] According to a third aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to: implement the lubricant oil pump control method as described in any of the foregoing technical solutions.

[0015] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, which, when the instructions in the storage medium are executed by a processor of a mobile terminal, enables the mobile terminal to perform the lubricant oil pump control method as described in any of the above technical solutions.

[0016] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program that is executed by a processor as described in any of the foregoing technical solutions, a lubricant oil pump control method.

[0017] According to a sixth aspect of the present disclosure, a vehicle is provided, which is equipped with a lubricant oil pump control device as described in any of the above technical solutions, and / or an electronic device as described in any of the above technical solutions, and / or a lubricant oil pump control method as described in any of the above technical solutions when performing the above technical solutions.

[0018] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The embodiments of this disclosure, in response to the disengagement mechanism being in the disengaged state, adjust the operating parameters of the oil pump according to the vehicle speed and the calibrated mapping relationship, and according to the magnitude relationship between the lubricant temperature and the preset lubricant temperature. This deeply decouples the lubrication requirements under the dual working conditions of the disengaged and engaged states, and performs fine dynamic control of the oil pump operating parameters on demand and in a timely manner. This not only significantly reduces the overall operating power consumption of the lubricant oil pump control system, but also directly improves the energy utilization efficiency of the electric drive assembly and the vehicle's range potential. It can still ensure lubrication safety in extreme high and low temperature environments without relying on traditional oil temperature sensors.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0021] Figure 1 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 1 .

[0022] Figure 2 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 2 .

[0023] Figure 3 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 3 .

[0024] Figure 4 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 4 .

[0025] Figure 5 This is a schematic diagram illustrating the determination of a preset lubricant temperature in a lubricant pump control method according to an exemplary embodiment of the present disclosure. Figure 5 .

[0026] Figure 6 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 6 .

[0027] Figure 7 This is a block diagram of a lubricant oil pump control device according to an exemplary embodiment of the present disclosure. Figure 7 .

[0028] Figure 8This is a frame of an electronic device illustrated according to an exemplary embodiment of the present disclosure. Figure 8 . Detailed Implementation

[0029] Exemplary embodiments of this disclosure will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0030] The embodiments described below, which are examples of some of the embodiments of this disclosure, do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0031] In related technologies, lubricants are the lifeline of vehicle transmission systems. They significantly reduce wear and frictional power consumption by forming a protective oil film between moving parts, effectively dissipating heat generated by gears, bearings, etc., preventing localized overheating failure. Furthermore, they can remove wear debris and coat metal surfaces to resist corrosion. In highly integrated electric drive systems, the precise delivery and management of lubricants directly impacts transmission efficiency, NVH performance, component lifespan, and system reliability. Especially under complex operating conditions such as disengagement mechanisms, achieving sensorless, full-temperature-range intelligent lubrication is a key technological challenge for ensuring the system's sustained and efficient operation.

[0032] As electric drive systems for new energy vehicles develop towards high integration and modularity, integrating disengagement mechanisms (such as clutches or disconnect devices) into the electric drive assembly has become a mainstream trend in the industry. While optimizing space layout and improving energy density, this integrated design also introduces complex thermal management and lubrication challenges. The heat generation mechanism, oil churning state, and lubrication circuit requirements of the internal moving parts of the disengagement mechanism are completely different in the engaged and disengaged states, making it difficult to match with traditional single, constant lubrication methods. Especially for critical friction components such as the differential in the system, in the absence of direct oil temperature sensor feedback, how to ensure that the lubricant is accurately and adequately delivered to the required parts under the full temperature range (such as -40℃ low temperature cold start to 150℃ high temperature limit) and various dynamic operating conditions faced by the vehicle, and prevent excessive wear and sintering caused by insufficient lubrication, or efficiency loss caused by excessive oil churning, is the core technical bottleneck for ensuring the overall reliability, efficiency, and service life of the vehicle system.

[0033] Therefore, there is an urgent need for a new oil pump control scheme for lubricants to solve problems such as lubrication safety and reliability under complex working conditions.

[0034] The steps of the method in the exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings and examples.

[0035] Figure 1 This is a schematic diagram of a lubricant oil pump control method according to an exemplary embodiment of the present disclosure. Figure 1 .

[0036] like Figure 1 As shown, in some embodiments, the lubricant oil pump control method of this disclosure includes: In step S102, in response to the disengagement mechanism being in the disengaged state, the corresponding lubricant temperature is determined according to the vehicle speed and the calibrated mapping relationship, wherein the mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; In step S104, the operating parameters of the oil pump are adjusted according to the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping time interval, oil pump set speed, and oil pump set power.

[0037] In some exemplary embodiments of this disclosure, by responding to the disengagement mechanism being in the disengaged state, the operating parameters of the oil pump are adjusted according to the vehicle speed and the calibrated mapping relationship, and according to the magnitude relationship between the lubricant temperature and the preset lubricant temperature, so as to deeply decouple the lubrication requirements under the dual working conditions of the disengaged state and the engaged state, and to perform fine dynamic control of the operating parameters of the oil pump on demand and on time. This not only significantly reduces the overall operating power consumption of the lubricant oil pump control system, but also directly improves the energy utilization efficiency of the electric drive assembly and the vehicle's range potential. It can still ensure lubrication safety in extreme high and low temperature environments without relying on traditional oil temperature sensors.

[0038] In some exemplary embodiments of this disclosure, in Figure 1 Based on what is shown, as Figure 2 As shown, in response to the disengagement mechanism being in the disengaged state, the corresponding lubricant temperature is determined according to the vehicle speed and the calibrated mapping relationship, including: In step S202, in response to the disengagement mechanism being in the disengaged state, the vehicle speed and the measured rotational speed of the oil pump are collected; In step S204, the corresponding lubricant temperature is determined based on the vehicle speed, the measured rotational speed, and the mapping relationship.

[0039] In some exemplary embodiments of this disclosure, a pre-calibrated mapping relationship model between vehicle speed, measured oil pump speed, and lubricant temperature is constructed and utilized to achieve soft measurement of lubricant temperature in a disengaged state. Specifically, by acquiring vehicle speed and oil pump speed in real time, the corresponding lubricant temperature estimate can be dynamically calculated based on the mapping relationship. This replaces physical temperature sensors with low-cost signals (vehicle speed and oil pump speed), which not only saves hardware costs and improves reliability, but also reflects the actual viscosity state of the lubricant due to changes in operating conditions in real time. This provides a key and reliable input for subsequent precise adaptive lubrication control (such as adjusting oil pump parameters), enabling the entire lubrication system to achieve higher control intelligence while simplifying its architecture.

[0040] In some exemplary embodiments of this disclosure, in Figure 2 Based on what is shown, as Figure 3 As shown, the corresponding lubricant temperature is determined based on the vehicle speed, the measured rotational speed, and the mapping relationship, including: In step S302, the preset speed and preset power of the corresponding oil pump are determined according to the vehicle speed and the first mapping relationship. The first mapping relationship includes the calibrated correspondence between the vehicle speed, the preset speed and the preset power. In step S304, the measured rotational speed of the oil pump is collected, and the speed difference between the measured rotational speed and the preset rotational speed is determined; In step S306, the corresponding lubricant temperature is determined based on the speed difference, the preset power, and the second mapping relationship. The second mapping relationship includes the calibrated correspondence between the speed difference, the power, and the lubricant temperature.

[0041] In some exemplary embodiments of this disclosure, sensorless estimation of lubricant temperature is achieved by constructing a first mapping relationship and a second mapping relationship. Specifically, the first mapping relationship is first queried based on the real-time vehicle speed to obtain the theoretical preset speed and power of the oil pump under the current operating condition. Then, the actual speed of the oil pump is collected, and the speed difference between it and the preset value is calculated. Finally, this speed difference is combined with the preset power and input into the second mapping relationship to calculate the corresponding lubricant temperature. In other words, by utilizing the difference in load characteristics of the oil pump working in a viscous fluid (manifested as a speed difference), the lubricant temperature and viscosity state, which are difficult to measure directly, are transformed into a measurable speed deviation signal for indirect, dynamic, and reliable inference. This provides key state input for subsequent precise lubrication control, realizing intelligent perception and system cost optimization.

[0042] In some exemplary embodiments of this disclosure, in the first mapping relationship, the vehicle speed and the preset rotational speed are positively correlated, and / or the vehicle speed and the preset power are positively correlated.

[0043] In some exemplary embodiments of this disclosure, the first mapping relationship is shown in Table 1. The current disengagement device state is determined. If it is in the disengagement state, the vehicle speed is read. According to Table 1, the preset speed spd and preset power P of the oil pump are confirmed. Taking a vehicle speed of 60kph-80kph as an example, the preset speed of the oil pump is 2000rpm and the preset power of the oil pump is P_4.

[0044] Table 1

[0045] In some exemplary embodiments of this disclosure, in the second mapping relationship, the speed difference and the lubricant temperature are negatively correlated, and / or the speed difference and the preset power are positively correlated.

[0046] In some exemplary embodiments of this disclosure, the second mapping relationship is shown in Table 2. For example, the speed difference Diff_spd is determined based on the preset speed and the measured speed. If the speed difference is Diff_spd_2, then the corresponding lubricant temperature is T_42 when the preset power is P_4 and the speed difference is Diff_spd_2.

[0047] Table 2

[0048] In some exemplary embodiments of this disclosure, adjusting the operating parameters of the oil pump based on the relationship between the lubricant temperature and a preset lubricant temperature includes: Determine whether the lubricant temperature is less than or equal to the preset lubricant temperature; In response to the lubricant temperature being less than or equal to the preset lubricant temperature, it is determined that the lubricant will be pumped in a continuous lubrication mode.

[0049] In some exemplary embodiments of this disclosure, if the lubricant temperature is determined to be lower than or equal to a preset lubricant temperature, the lubricant is determined to be in a high viscosity state. The oil pump is controlled to operate continuously at a preset rated or higher speed and power to maintain a stable pumping flow and pressure. This ensures that sufficient lubricant can overcome high flow resistance, effectively cover and protect key friction pairs such as the differential. Through proactive and sufficient lubrication, the risk of wear caused by decreased oil fluidity during cold starts and in low-temperature environments is reduced. This ensures the basic reliability of the lubrication system under all temperature range conditions and provides a clear and safe prerequisite for the intervention of upper-level intelligent energy-saving strategies.

[0050] In some exemplary embodiments of this disclosure, adjusting the operating parameters of the oil pump based on the relationship between the lubricant temperature and a preset lubricant temperature further includes: Determine whether the temperature of the lubricant is greater than the preset lubricant temperature; In response to the lubricant temperature being greater than the preset lubricant temperature, it is determined that the lubricant will be pumped in an intermittent lubrication mode.

[0051] In some exemplary embodiments of this disclosure, when the lubricant temperature is determined to be higher than the preset lubricant temperature, it indicates that the lubricant is in a high-temperature state with low viscosity and good fluidity. The control oil pump is then switched from continuous operation to intermittent mode. For example, it operates according to a preset start-stop cycle (such as running for 10 seconds and stopping for 30 seconds) or at an interval dynamically adjusted according to the component's thermal load. However, it is not limited to this. By utilizing the good adhesion and extensibility of the lubricant at high temperatures, periodic small-volume pumping replaces continuous oil supply. Under the premise of ensuring that an effective oil film is maintained on the friction pair surface, the continuous operation power consumption of the oil pump and unnecessary oil churning losses are significantly reduced, thereby significantly improving system energy efficiency and reducing the aging rate of the oil. This achieves the dual goals of reliability assurance and energy consumption optimization.

[0052] In some exemplary embodiments of this disclosure, in Figure 1 Based on what is shown, as Figure 4 As shown, the lubricant oil pump control method also includes: In step S402, the viscosity and temperature of the lubricant are tested to calibrate the lubricant viscosity and temperature based on the test results. In step S404, the temperature corresponding to the inflection point of the lubricant viscosity is determined to determine the preset lubricant temperature.

[0053] In some exemplary embodiments of this disclosure, the viscosity and temperature characteristics of a specific lubricant are precisely measured and calibrated. Specifically, the kinematic viscosity of the lubricant is measured at different temperatures in a temperature-controlled test bench, a complete viscosity-temperature correlation curve is plotted, and the inflection point temperature at which the viscosity changes significantly is determined through data analysis. This inflection point temperature is calibrated as the core threshold of the subsequent control strategy, i.e., the preset lubricant temperature T_1. This calibration process provides the most critical physical basis and data foundation for the entire sensorless intelligent lubrication system, ensuring that the switching points of the control strategy (such as the conversion between continuous lubrication and intermittent lubrication) are strictly matched with the actual physical characteristics of the lubricant. This fundamentally guarantees the reliability and energy efficiency optimization potential of the lubrication system in operation across the entire temperature range.

[0054] In some exemplary embodiments of this disclosure, the results of calibrating the lubricant viscosity and lubricant temperature based on the above test results are referenced. Figure 5 As shown, Figure 5 It visually demonstrates the typical physical properties of the kinematic viscosity of a lubricant as a function of temperature, i.e., the relationship between lubricant viscosity and temperature 500. The horizontal axis represents temperature, ranging from -30℃ to 130℃, and the vertical axis represents kinematic viscosity in mm² / s, with a scale up to 1200.

[0055] In some exemplary embodiments of this disclosure, Figure 5 The curves shown clearly reveal the strong correlation between the kinematic viscosity of the lubricant and temperature. In the low-temperature range (e.g., -30℃), the lubricant viscosity is extremely high (over 1000 mm² / s), exhibiting a near-solid state. As the temperature rises, the viscosity decreases sharply and non-linearly, with a particularly significant decreasing trend in the common operating range of 0℃ to 50℃. Upon entering the high-temperature range (e.g., above 90℃), the viscosity drops to a lower level and the change tends to be gradual. The preset lubricant temperature T_1 corresponding to the inflection point is approximately 20℃. This is merely an example of determining the preset lubricant temperature corresponding to the inflection point, and the value of the inflection point temperature is not limited to this.

[0056] In some exemplary embodiments of this disclosure, based on Figure 5 Given a predetermined lubricant temperature, further adjustments are made based on... Figure 6 As shown, the method for controlling the lubricant pump includes the following steps: Step S602: Confirm a key preset lubricant temperature threshold T_1. This temperature point usually corresponds to a significant turning point in the lubricant viscosity and serves as a data benchmark for subsequent lubrication mode switching.

[0057] Step S604: Read the current working status of the disengagement device (such as the clutch) in real time.

[0058] Step S606: Determine whether the disengagement device is in the engaged state.

[0059] If the determination is yes (engaged state): Execute step S608, directly adopt conventional lubrication method to provide sufficient lubrication for the entire transmission system.

[0060] If the determination is no (disconnected state): then model-based intelligent lubrication management is initiated, and step S610 is executed, that is, the system synchronously reads operating parameters such as vehicle speed, oil pump preset speed and power.

[0061] Step S612 involves obtaining the actual speed of the oil pump, calculating the speed difference between the predetermined speed and the actual speed, and using this speed difference as input to the mapping relationship to infer the current lubricant temperature in real time.

[0062] Step S614: Compare the inferred lubricant temperature with the initially set preset lubricant temperature T_1 to determine whether the inferred lubricant temperature is higher than the preset lubricant temperature T_1.

[0063] If the lubricant temperature is higher than the preset lubricant temperature T_1, it indicates that the lubricant is in a high-temperature state with low viscosity. A more energy-efficient intermittent lubrication method will be adopted, i.e., step S618 will be executed to effectively reduce power consumption while ensuring basic lubrication.

[0064] If the lubricant temperature is not higher than the preset lubricant temperature T_1, then step S616 is executed to adopt continuous lubrication mode and continue real-time monitoring and cyclic judgment.

[0065] based on Figure 6 The lubricant oil pump control scheme shown achieves intelligent switching between conventional lubrication and energy-saving intermittent lubrication modes based on different operating conditions (engagement / disengagement) and the actual state of the lubricant (inferred from the model) without an oil temperature sensor, thus taking into account both lubrication reliability and system energy efficiency across the entire temperature range.

[0066] In some exemplary embodiments of this disclosure, the intermittent lubrication method includes: the lubricant temperature being negatively correlated with the pumping rate of the oil pump; and / or the lubricant temperature being negatively correlated with the set rotational speed of the oil pump; and / or the lubricant temperature being negatively correlated with the set power of the oil pump; and / or the lubricant temperature being negatively correlated with the operating time of the oil pump; and / or the lubricant temperature being positively correlated with the pumping time interval of the oil pump.

[0067] like Figure 7As shown, the oil pump control device 700 for the lubricant may include a temperature determination unit 702 and a parameter adjustment unit 704.

[0068] The temperature determination unit 702 is used to determine the corresponding lubricant temperature based on the vehicle speed and a calibrated mapping relationship in response to the disengagement mechanism being in the disengaged state. The mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; The parameter adjustment unit 704 is used to adjust the operating parameters of the oil pump according to the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping interval, oil pump set speed, and oil pump set power.

[0069] In some exemplary embodiments of this disclosure, the temperature determination unit 702 is further configured to: In response to the disengagement mechanism being in the disengaged state, the vehicle speed and the measured rotational speed of the oil pump are collected; The corresponding lubricant temperature is determined based on the vehicle speed, the measured rotational speed, and the mapping relationship.

[0070] In some exemplary embodiments of this disclosure, the temperature determination unit 702 is further configured to: Based on the vehicle speed and the first mapping relationship, the preset speed and preset power of the corresponding oil pump are determined. The first mapping relationship includes the correspondence between the calibrated vehicle speed, the preset rotational speed, and the preset power. The measured rotational speed of the oil pump is collected, and the speed difference between the measured rotational speed and the preset rotational speed is determined. Based on the speed difference, the preset power, and the second mapping relationship, the corresponding lubricant temperature is determined. The second mapping relationship includes the correspondence between the calibrated speed difference, the power, and the lubricant temperature.

[0071] In some exemplary embodiments of this disclosure, in the first mapping relationship, the vehicle speed and the preset rotational speed are positively correlated, and / or the vehicle speed and the preset power are positively correlated.

[0072] In some exemplary embodiments of this disclosure, in the second mapping relationship, the speed difference and the lubricant temperature are negatively correlated, and / or the speed difference and the preset power are positively correlated.

[0073] In some exemplary embodiments of this disclosure, the parameter adjustment unit 704 is further configured to: Determine whether the lubricant temperature is less than or equal to the preset lubricant temperature; In response to the lubricant temperature being less than or equal to the preset lubricant temperature, it is determined that the lubricant will be pumped in a continuous lubrication mode.

[0074] In some exemplary embodiments of this disclosure, the parameter adjustment unit 704 is further configured to: Determine whether the temperature of the lubricant is greater than the preset lubricant temperature; In response to the lubricant temperature being greater than the preset lubricant temperature, it is determined that the lubricant will be pumped in an intermittent lubrication mode.

[0075] In some exemplary embodiments of this disclosure, the lubricant oil pump control device 700 is further configured to: The viscosity and temperature of the lubricant are tested, and the lubricant viscosity and temperature are calibrated based on the test results. The temperature corresponding to the inflection point of the lubricant viscosity is determined to determine the preset lubricant temperature.

[0076] In some exemplary embodiments of this disclosure, the intermittent lubrication method includes: the lubricant temperature being negatively correlated with the pumping rate of the oil pump; and / or the lubricant temperature being negatively correlated with the set rotational speed of the oil pump; and / or the lubricant temperature being negatively correlated with the set power of the oil pump; and / or the lubricant temperature being negatively correlated with the operating time of the oil pump; and / or the lubricant temperature being positively correlated with the pumping time interval of the oil pump.

[0077] The lubricant oil pump control device 700 of this embodiment can be applied to various vehicles, such as pure electric vehicles (lubricant is used for forced lubrication and cooling of gears and bearings in high-speed electric drive systems, two- or multi-speed electric axles), hybrid vehicles (lubricant is used to manage lubrication flow and pressure under different heat loads in complex electromechanical coupling systems (such as engine end, motor end, clutch), fuel cell vehicles (lubricant is used for reliable lubrication of high-speed bearings of key accessories such as air compressors and hydrogen circulation pumps), and fuel vehicles (decoupling mechanisms and key bearings), but is not limited thereto.

[0078] Regarding the apparatus in the above embodiments, the specific manner in which each unit performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0079] Figure 8 This is a block diagram illustrating an electronic device according to an exemplary embodiment of the present disclosure.

[0080] Reference Figure 8The electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0081] Processing component 802 typically controls the overall operation of electronic device 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 802 may include one or more processors 818 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0082] Memory 804 is configured to store various types of data to support the operation of electronic device 800. Examples of such data include instructions for any application or method operating on electronic device 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0083] Power supply component 806 provides power to various components of electronic device 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 800.

[0084] Multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0085] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when electronic device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0086] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0087] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of electronic device 800. For example, sensor assembly 814 can detect the on / off state of electronic device 800, the relative positioning of components such as the display and keypad of electronic device 800, changes in position of electronic device 800 or a component of electronic device 800, the presence or absence of user contact with electronic device 800, orientation or acceleration / deceleration of electronic device 800, and temperature changes of electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0088] Communication component 816 is configured to facilitate wired or wireless communication between electronic device 800 and other devices. Electronic device 800 can access wireless networks based on communication standards, such as WiFi, 3G, 4G, 5G, other communication standards, or combinations thereof. In some embodiments of this disclosure, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In some embodiments of this disclosure, communication component 816 further includes a near-field communication (wheel-end speed FC) module to facilitate short-range communication. For example, the wheel-end speed FC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0089] In some embodiments of this disclosure, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0090] In some embodiments of this disclosure, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions that can be executed by a processor 818 of an electronic device 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0091] In some embodiments of this disclosure, a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a mobile terminal, enables the mobile terminal to perform a lubricant oil pump control method.

[0092] In some embodiments of this disclosure, a computer program product is also provided, including a computer program / instructions that, when executed by a processor, implement a lubricant oil pump control method.

[0093] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0094] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for controlling a lubricant oil pump, characterized in that, include: In response to the disengagement mechanism being in the disengaged state, the corresponding lubricant temperature is determined based on the vehicle speed and the calibrated mapping relationship. The mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; The operating parameters of the oil pump are adjusted according to the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping interval, oil pump set speed, and oil pump set power.

2. The lubricant oil pump control method according to claim 1, characterized in that, In response to the disengagement mechanism being in the disengaged state, the corresponding lubricant temperature is determined based on the vehicle speed and the calibrated mapping relationship, including: In response to the disengagement mechanism being in the disengaged state, the vehicle speed and the measured rotational speed of the oil pump are collected; The corresponding lubricant temperature is determined based on the vehicle speed, the measured rotational speed, and the mapping relationship.

3. The lubricant oil pump control method according to claim 2, characterized in that, Based on the vehicle speed, the measured rotational speed, and the mapping relationship, the corresponding lubricant temperature is determined, including: Based on the vehicle speed and the first mapping relationship, the preset speed and preset power of the corresponding oil pump are determined. The first mapping relationship includes the correspondence between the calibrated vehicle speed, the preset rotational speed, and the preset power. The measured rotational speed of the oil pump is collected, and the speed difference between the measured rotational speed and the preset rotational speed is determined. Based on the speed difference, the preset power, and the second mapping relationship, the corresponding lubricant temperature is determined. The second mapping relationship includes the correspondence between the calibrated speed difference, the power, and the lubricant temperature.

4. The lubricant oil pump control method according to claim 3, characterized in that, In the first mapping relationship, the vehicle speed and the preset rotational speed are positively correlated. And / or, the vehicle speed and the preset power are positively correlated.

5. The lubricant oil pump control method according to claim 3, characterized in that, In the second mapping relationship, the speed difference and the lubricant temperature are negatively correlated. And / or, the speed difference and the preset power are positively correlated.

6. The lubricant oil pump control method according to claim 1, characterized in that, Based on the relationship between the lubricant temperature and the preset lubricant temperature, the operating parameters of the oil pump are adjusted, including: Determine whether the lubricant temperature is less than or equal to the preset lubricant temperature; In response to the lubricant temperature being less than or equal to the preset lubricant temperature, it is determined that the lubricant will be pumped in a continuous lubrication mode.

7. The lubricant oil pump control method according to claim 1, characterized in that, Adjusting the operating parameters of the oil pump based on the relationship between the lubricant temperature and the preset lubricant temperature further includes: Determine whether the temperature of the lubricant is greater than the preset lubricant temperature; In response to the lubricant temperature being greater than the preset lubricant temperature, it is determined that the lubricant will be pumped in an intermittent lubrication mode.

8. The lubricant oil pump control method according to claim 6 or 7, characterized in that, Also includes: The viscosity and temperature of the lubricant are tested, and the lubricant viscosity and temperature are calibrated based on the test results. The temperature corresponding to the inflection point of the lubricant viscosity is determined to determine the preset lubricant temperature.

9. The lubricant oil pump control method according to claim 7, characterized in that, The intermittent lubrication method includes a condition where the lubricant temperature is negatively correlated with the oil pump delivery rate. And / or, the lubricant temperature is negatively correlated with the set speed of the oil pump. And / or, the lubricant temperature is negatively correlated with the set power of the oil pump. And / or, the lubricant temperature is negatively correlated with the operating time of the oil pump. And / or, the lubricant temperature is positively correlated with the pumping time interval of the oil pump.

10. A lubricant oil pump control device, characterized in that, The lubricant oil pump control device is capable of performing the lubricant oil pump control method according to any one of claims 1-9, and the lubricant oil pump control device comprises: The temperature determination unit, in response to the disengagement mechanism being in the disengaged state, determines the corresponding lubricant temperature based on the vehicle speed and a calibrated mapping relationship. The mapping relationship includes the correspondence between the vehicle speed and the lubricant temperature; The parameter adjustment unit is used to adjust the operating parameters of the oil pump based on the relationship between the lubricant temperature and the preset lubricant temperature. The operating parameters include at least one of the following: oil pumping rate, oil pump running time, oil pumping interval, oil pump set speed, and oil pump set power.

11. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to implement the oil pump control method for the lubricant according to any one of claims 1-9.

12. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the mobile terminal, the mobile terminal is able to perform the lubricant oil pump control method according to any one of claims 1-9.

13. A computer program product, characterized in that, It includes a computer program, which is executed by a processor as a method for controlling a lubricant pump as described in any one of claims 1-9.

14. A vehicle, characterized in that, The device is equipped with an oil pump control device for the lubricant as described in claim 10, and / or an electronic device as described in claim 11, and / or an oil pump control method for the lubricant as described in any one of claims 1-9.

Images