Lubricating oil temperature adjustment method, device, equipment, medium, product and vehicle

Abstract

The application relates to a lubricating oil temperature adjusting method, device, equipment, medium, product and vehicle and relates to the technical field of thermal management. At least the technical problem of low electric drive efficiency of an electric drive system in related technologies is solved. The method comprises the following steps: acquiring the running state of the vehicle; in the case that the running state of the vehicle is a pre-starting state, the temperature of lubricating oil of the vehicle and the ambient temperature are used to adjust the temperature of the lubricating oil, so that the temperature of the lubricating oil reaches a first temperature, and the first temperature is determined based on the characteristic parameters of the lubricating oil. The application can improve the electric drive efficiency of the electric drive system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, in particular to a lubricating oil temperature adjusting method, device, equipment, medium, product and vehicle. BACKGROUND

[0002] With the rapid development and popularization of new energy vehicles, new energy vehicles have become an important means of transportation for realizing sustainable development in the transportation field. Among them, the electric drive system is the core component of the new energy vehicle, and the electric drive efficiency is the core index to judge the performance of the electric drive system. However, when the vehicle starts, the temperature of the lubricating oil is low, especially under low temperature conditions, at this time the temperature of the lubricating oil is low and the viscosity is large, which leads to large oil stirring loss, thereby affecting the running efficiency of the vehicle during the starting stage. The current measures to improve the electric drive efficiency are: reducing the thickness of the motor silicon steel sheet, reducing the switching frequency of the power module, optimizing the resistance, reducing the viscosity of the lubricating oil of the reducer, improving the cooling efficiency, etc. Therefore, improving the electric drive efficiency can reduce the power consumption, reduce the cost of using the vehicle, or reduce the total capacity of the battery and reduce the cost of the vehicle, so it is necessary to continuously improve the electric drive efficiency of the electric drive system.

[0003] In related technologies, patent CN 114056109 A heats the lubricating oil passing through the motor by allowing the motor to block and heat the motor during the warm-up process of the vehicle, thereby increasing the temperature of the lubricating oil and reducing the viscosity of the lubricating oil, thereby reducing the oil stirring loss and drag loss of the vehicle and improving the low-temperature transmission efficiency of the vehicle. The technical solution is mainly to heat the lubricating oil by allowing the motor to block and heat the motor in the warm-up process. Although this method can increase the temperature of the lubricating oil, reduce the viscosity of the lubricating oil, and improve the subsequent electric drive efficiency of the electric drive system. However, since the motor is blocked to heat the lubricating oil, a large amount of battery power is consumed during the process, so that the power consumption during the warm-up and driving of the vehicle is not necessarily improved. Therefore, the electric drive efficiency of the current new energy vehicle electric drive system is low.

[0004] In another related technology, the patent CN 213361043 U realizes the improvement of the electric drive efficiency by the electromagnetic valve, the oil temperature sensor, the first pipeline, the second pipeline, the third pipeline, the fourth pipeline and the VCU. Specifically, one end of the first pipeline is connected with the circulating cooling system, and the other end of the first pipeline is connected with the water inlet pipe of the electric control; the inlet end of the electromagnetic valve is arranged on the water outlet pipe of the motor cooling water channel, the first outlet end of the electromagnetic valve is connected with the circulating cooling system through the second pipeline, and the second outlet end of the electromagnetic valve is connected with the inlet of the reducer water channel through the third pipeline; the outlet of the reducer water channel is connected with the circulating cooling system through the fourth pipeline; the oil temperature sensor is used for detecting the temperature of the lubricating oil in the reducer and sending to the VCU; the VCU is electrically connected with the oil temperature sensor and the electromagnetic valve, and the VCU controls the work of the electromagnetic valve based on the temperature of the lubricating oil detected by the oil temperature sensor. Thus, the viscosity of the lubricating oil is reduced by heating the lubricating oil in the reducer. The disclosed is only a specific lubricating oil heating device, and how to control the heating process of the lubricating oil is not described. Therefore, it cannot be explicitly stated how to improve the electric drive efficiency of the electric drive system. SUMMARY

[0005] The present application provides a lubricating oil temperature adjusting method, device, equipment, medium, product and vehicle, and the purpose of the present application is to at least solve the technical problem of low electric drive efficiency of the electric drive system in the related art.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] According to the first aspect of the present application, a lubricating oil temperature adjusting method is provided, which comprises: acquiring the running state of the vehicle; in the case that the running state of the vehicle is a pre-start state, adjusting the temperature of the lubricating oil based on the temperature of the lubricating oil of the vehicle and the ambient temperature, so that the temperature of the lubricating oil reaches a first temperature, and the first temperature is determined based on the characteristic parameters of the lubricating oil.

[0008] According to the above technical means, in the case that the running state of the vehicle is a pre-start state, the temperature of the lubricating oil is adjusted based on the temperature of the lubricating oil of the vehicle and the ambient temperature, so that the temperature of the lubricating oil reaches a first temperature determined based on the characteristic parameters of the lubricating oil. In this way, the temperature of the lubricating oil can be adjusted when the vehicle is in a pre-start state. That is, based on the present scheme, the temperature of the lubricating oil can be adjusted (heated) in advance before the vehicle starts running, so that the temperature of the lubricating oil reaches a suitable temperature. Thus, when the vehicle starts running, the temperature of the lubricating oil has reached a suitable temperature, thereby improving the electric drive efficiency of the electric drive system when the vehicle is running.

[0009] In a possible implementation, the adjusting the temperature of the lubricating oil based on the temperature of the lubricating oil and the ambient temperature to reach the first temperature comprises: heating the lubricating oil to reach the first temperature when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than a second temperature, the second temperature being determined based on the characteristic parameter of the lubricating oil and being less than the first temperature.

[0010] According to the technical means, the lubricating oil can be heated to reach the first temperature when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature. In this way, when the temperature of the lubricating oil is less than the first temperature, it indicates that the low temperature of the lubricating oil will affect the electric drive efficiency. When the ambient temperature is less than the second temperature, it indicates that the low ambient temperature will cause the temperature of the lubricating oil to rise slowly. Therefore, the lubricating oil needs to be heated to quickly reach the first temperature in this case, so as to improve the electric drive efficiency of the electric drive system of the vehicle during operation.

[0011] In a possible implementation, the method further comprises: maintaining the temperature of the lubricating oil in a first temperature range when the motor speed of the vehicle is less than a preset speed and the stator temperature of the motor is less than a third temperature, the third temperature being determined based on the characteristic parameter of the motor and the first temperature range being determined according to the first temperature.

[0012] According to the technical means, the motor speed of the vehicle and the stator temperature of the motor can be further determined, so that the temperature of the lubricating oil is maintained in the first temperature range when the motor speed of the vehicle is less than the preset speed and the stator temperature of the motor is less than the third temperature determined based on the characteristic parameter of the motor. In this way, when the motor speed is low, i.e., when the vehicle has not started running or has just started running at a slow speed, if the stator temperature of the motor is low, the temperature of the lubricating oil is maintained, so as to ensure that the temperature of the lubricating oil is in a suitable temperature range, thereby ensuring that the electric drive efficiency of the electric drive system of the vehicle during operation is at a high efficiency.

[0013] In a possible implementation, the heating the lubricating oil to reach the first temperature comprises: heating the lubricating oil based on the maximum heating power of the heat exchange device of the vehicle; determining a first heating duration, the first heating duration being a duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power; and heating the cooling liquid in the heat exchange device by the heater to make the temperature of the lubricating oil reach the first temperature within a first duration when the first heating duration is greater than the first duration, the first duration being determined based on the second temperature.

[0014] According to the technical means, the heating of the lubricating oil can be performed at the maximum heating power of the heat exchange device, and the first heating duration consumed for heating the temperature of the lubricating oil to the first temperature at the maximum heating power of the heat exchange device is determined. If the first heating duration is greater than the first duration, it indicates that even if the lubricating oil is heated at the maximum heating power of the heat exchange device, the time consumed is relatively long, and therefore the heater needs to heat the cooling liquid in the heat exchange device again to make the temperature of the lubricating oil reach the first temperature within the first duration. In this way, the temperature of the lubricating oil can be quickly heated to a suitable temperature within a short time, so as to ensure that the electric drive efficiency of the electric drive system of the vehicle is at a relatively high efficiency.

[0015] In a possible implementation, the method further includes: in a case where the first heating duration is less than or equal to the first duration, heating the temperature of the lubricating oil to the first temperature.

[0016] According to the technical means, when the duration consumed for heating the temperature of the lubricating oil to the first temperature at the maximum heating power of the heat exchange device is relatively short, the lubricating oil can be directly heated without heating the cooling liquid in the heat exchange device by the heater. Therefore, the energy consumed for heating the lubricating oil is saved.

[0017] In a possible implementation, the heating of the cooling liquid in the heat exchange device by the heater includes: heating the cooling liquid in the heat exchange device by the heater at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, and the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

[0018] According to the technical means, when the cooling liquid in the heat exchange device is heated by the heater, the target power can be determined based on a difference between the first temperature and the temperature of the lubricating oil, and a difference between the first duration and a duration for which the lubricating oil has been heated. Therefore, the cooling liquid in the heat exchange device can be heated by the heater at the target power. In this way, the cooling liquid in the heat exchange device can be heated at a suitable power, so that the heat exchange device can heat the temperature of the lubricating oil to the first temperature within the first duration. The cooling liquid in the heat exchange device is not excessively heated, and the energy consumed is saved.

[0019] In a possible implementation, the method further includes: in a case where the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature, heating the lubricating oil by means of the heat exchange device of the vehicle; and in a case where a heating parameter of the heating of the lubricating oil meets a preset condition, stopping the heating of the lubricating oil, the heating parameter meeting the preset condition being any one of: the temperature of the lubricating oil being greater than or equal to the first temperature, or the heating time of the lubricating oil being greater than a second time length, the second time length being determined based on a pre-start time length of the vehicle, the pre-start time length being a time length between a start of power-on of the vehicle and a start of driving of the vehicle.

[0020] According to the technical means, the lubricating oil can be heated by means of the heat exchange device in a case where the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature. In this way, when the ambient temperature is greater than or equal to the second temperature, it indicates that the ambient temperature is not particularly low, and the temperature of the lubricating oil can be quickly raised by means of the heat exchange device. In addition, by judging whether the heating parameter meets the preset condition, it is determined whether to stop heating the lubricating oil, so that the heating of the lubricating oil can be stopped when the temperature of the lubricating oil is greater than or equal to the first temperature, or the heating time of the lubricating oil is greater than the second time length. In this way, the temperature of the lubricating oil can be prevented from being excessively raised during the heating of the lubricating oil, or the lubricating oil can be prevented from being heated for a long time to cause energy waste, thereby saving the consumed energy.

[0021] In a possible implementation, the upper limit of the first temperature range is determined according to a sum between the first temperature and a preset temperature difference, and the lower limit of the first temperature range is determined according to a difference between the first temperature and the preset temperature difference, and the maintaining of the temperature of the lubricating oil in the first temperature range includes: heating the lubricating oil in a case where the temperature of the lubricating oil is less than the lower limit of the first temperature range; and stopping the heating of the lubricating oil in a case where the temperature of the lubricating oil is greater than the upper limit of the first temperature range.

[0022] According to the technical means, the first temperature range can be determined according to the first temperature, so that the temperature of the lubricating oil is always maintained in the first temperature range. In this way, the electric drive efficiency of the electric drive system of the vehicle can be ensured to be at a high efficiency when the vehicle is running.

[0023] In a possible implementation, the pre-start state is any one of: the vehicle being unlocked, the vehicle being switched from a power-off state to a power-on state and the vehicle speed being 0, or the vehicle being in a locked state and the air conditioner being turned on.

[0024] According to the technical means, the running state of the vehicle can be accurately determined by means of the plurality of parameter conditions, so that the temperature of the lubricating oil can be adjusted only when the vehicle is in the pre-start state, thereby improving the accuracy of the adjustment of the temperature of the lubricating oil.

[0025] According to a second aspect provided in the present application, a lubricating oil temperature adjusting device is provided, which comprises an obtaining module and a processing module. The obtaining module is configured to obtain an operating state of a vehicle. The processing module is configured to, when the operating state of the vehicle is a pre-starting state, adjust a temperature of lubricating oil of the vehicle based on the temperature of the lubricating oil and an ambient temperature, so that the temperature of the lubricating oil reaches a first temperature, the first temperature being determined based on a characteristic parameter of the lubricating oil.

[0026] In a possible implementation, the processing module is specifically configured to, when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than a second temperature, heat the lubricating oil so that the temperature of the lubricating oil reaches the first temperature, the second temperature being determined based on the characteristic parameter of the lubricating oil, and the second temperature being less than the first temperature.

[0027] In a possible implementation, the processing module is further configured to, when a rotating speed of an electric machine of the vehicle is less than a preset rotating speed and a stator temperature of the electric machine is less than a third temperature, maintain the temperature of the lubricating oil in a first temperature range, the third temperature being determined based on a characteristic parameter of the electric machine, and the first temperature range being determined according to the first temperature.

[0028] In a possible implementation, the processing module is specifically configured to heat the lubricating oil based on a maximum heating power of a heat exchange device of the vehicle. The processing module is specifically configured to determine a first heating duration, the first heating duration being a duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power. The processing module is specifically configured to, when the first heating duration is greater than a first duration, heat a coolant in the heat exchange device by using a heater so that the temperature of the lubricating oil reaches the first temperature within the first duration, the first duration being determined based on a second temperature.

[0029] In a possible implementation, the processing module is further configured to, when the first heating duration is less than or equal to the first duration, heat the temperature of the lubricating oil to the first temperature.

[0030] In a possible implementation, the processing module is specifically configured to heat the coolant in the heat exchange device by using the heater at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, and the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

[0031] In a possible implementation, the processing module is further configured to heat the lubricating oil by a heat exchange device of the vehicle when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature; and the processing module is further configured to stop heating the lubricating oil when a heating parameter of the lubricating oil meets a preset condition, the heating parameter meeting the preset condition being any one of: the temperature of the lubricating oil being greater than or equal to the first temperature, or a heating duration of the lubricating oil being greater than a second duration, the second duration being determined based on a pre-starting duration of the vehicle, the pre-starting duration being a duration between a start of power-on of the vehicle and a start of driving of the vehicle.

[0032] In a possible implementation, the upper limit of the first temperature range is determined according to a sum of the first temperature and a preset temperature difference, and the lower limit of the first temperature range is determined according to a difference between the first temperature and the preset temperature difference; the processing module is specifically configured to heat the lubricating oil when the temperature of the lubricating oil is less than the lower limit of the first temperature range; and the processing module is specifically configured to stop heating the lubricating oil when the temperature of the lubricating oil is greater than the upper limit of the first temperature range.

[0033] In a possible implementation, the pre-starting state is any one of: the vehicle being unlocked, the vehicle being switched from a power-off state to a power-on state and the vehicle speed being 0, or the vehicle being in a locked state and the air conditioner being turned on.

[0034] According to a third aspect provided in the present application, an electronic device is provided, including: a processor; a memory for storing processor-executable instructions; and wherein the processor is configured to execute the instructions to implement the method of the first aspect and any possible implementation thereof.

[0035] According to a fourth aspect provided in the present application, a computer-readable storage medium is provided, when instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device performs the method of the first aspect and any possible implementation thereof.

[0036] According to a fifth aspect provided in the present application, a computer program product is provided, the computer program product including computer instructions, when the computer instructions are executed on an electronic device, the electronic device performs the method of the first aspect and any possible implementation thereof.

[0037] According to a sixth aspect provided in the present application, a vehicle is provided, the vehicle including the lubricating oil temperature adjusting device of the second aspect, and the vehicle is configured to implement the method of the first aspect and any possible implementation thereof.

[0038] Therefore, the above technical features of the present application have the following beneficial effects:

[0039] (1) The application can adjust the temperature of the lubricating oil based on the temperature of the lubricating oil and the ambient temperature when the vehicle is in a pre-start state, so that the temperature of the lubricating oil reaches a first temperature determined based on the characteristic parameters of the lubricating oil. In this way, the temperature of the lubricating oil can be adjusted when the vehicle is in a pre-start state. That is, based on the present solution, the temperature of the lubricating oil can be adjusted (heated) in advance before the vehicle starts driving, so that the temperature of the lubricating oil reaches a suitable temperature. Thus, when the vehicle starts running, the temperature of the lubricating oil has already reached a suitable temperature, thereby improving the electric drive efficiency of the electric drive system when the vehicle is running.

[0040] (2) The application can further heat the lubricating oil when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature, so that the temperature of the lubricating oil reaches the first temperature. In this way, when the temperature of the lubricating oil is less than the first temperature, it indicates that the low temperature of the lubricating oil will affect the electric drive efficiency, and when the ambient temperature is less than the second temperature, it indicates that the low ambient temperature will cause the temperature of the lubricating oil to rise slowly. Therefore, it is necessary to heat the lubricating oil under such conditions to make the temperature of the lubricating oil reach the first temperature quickly, thereby improving the electric drive efficiency of the electric drive system when the vehicle is running.

[0041] (3) The application can further determine the motor speed of the vehicle and the stator temperature of the motor, so that when the motor speed of the vehicle is less than a preset speed and the stator temperature of the motor is less than a third temperature determined based on the characteristic parameters of the motor, the temperature of the lubricating oil is maintained in the first temperature range. In this way, when the motor speed is low, i.e. when the vehicle has not started driving or has just started driving at a slow speed, if the stator temperature of the motor is low, the temperature of the lubricating oil is maintained, thereby ensuring that the temperature of the lubricating oil is in a suitable temperature range to ensure that the electric drive efficiency of the electric drive system when the vehicle is running is at a high efficiency.

[0042] (4) The application can heat the lubricating oil at the maximum heating power of the heat exchange device when heating the lubricating oil, and determine a first heating time consumed for heating the temperature of the lubricating oil to the first temperature at the maximum heating power. If the first heating time is greater than the first time, it indicates that even if the lubricating oil is heated at the maximum heating power of the heat exchange device, the time consumed is longer, therefore the heater needs to heat the cooling liquid in the heat exchange device to make the temperature of the lubricating oil reach the first temperature within the first time. In this way, the temperature of the lubricating oil can be quickly heated to a suitable temperature within a short time, thereby ensuring that the electric drive efficiency of the electric drive system when the vehicle is running is at a high efficiency.

[0043] (5) The application can directly heat the lubricating oil without heating the coolant in the heat exchange device by the heater when the time consumed for heating the lubricating oil to the first temperature at the maximum heating power of the heat exchange device is short. Thus, the energy consumed for heating the lubricating oil is saved.

[0044] (6) The application can determine the target power based on the difference between the first temperature and the temperature of the lubricating oil and the difference between the first time length and the time length for which the lubricating oil has been heated when heating the coolant in the heat exchange device by the heater. Thus, the coolant in the heat exchange device is heated by the heater at the target power. In this way, the coolant in the heat exchange device can be heated at a suitable power so that the heat exchange device heats the temperature of the lubricating oil to the first temperature within the first time length. The coolant in the heat exchange device is not excessively heated, and the energy consumed is saved.

[0045] (7) The application can heat the lubricating oil by the heat exchange device only when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature. In this way, when the ambient temperature is greater than or equal to the second temperature, it indicates that the ambient temperature is not particularly low, and the temperature of the lubricating oil can be quickly raised by heating the lubricating oil by the heat exchange device only. By determining whether to stop heating the lubricating oil by judging whether the heating parameter meets the preset condition, the heating of the lubricating oil can be stopped when the temperature of the lubricating oil is greater than or equal to the first temperature or when the time length for heating the lubricating oil is greater than the second time length. In this way, the temperature of the lubricating oil can be raised without being excessively high or the lubricating oil can be heated for a long time, and the energy is wasted, thereby saving the energy consumed.

[0046] (8) The application can determine the first temperature range according to the first temperature, so that the temperature of the lubricating oil is always maintained in the first temperature range. Thus, the electric drive efficiency of the electric drive system of the vehicle can be kept at a high efficiency when the vehicle is running.

[0047] (9) The application can determine the running state of the vehicle by judging whether the vehicle is in the pre-start state according to a plurality of parameter conditions, so as to accurately determine the running state of the vehicle. The temperature of the lubricating oil is adjusted only when the vehicle is not in the pre-start state, thereby improving the accuracy of adjusting the temperature of the lubricating oil.

[0048] It should be noted that the technical effects brought by any one of the implementation manners of the second aspect to the sixth aspect can refer to the technical effects brought by the corresponding implementation manners in the first aspect, which will not be repeated here.

[0049] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0050] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate implementations of the application and, together with the description, further serve to explain the principles of the application, and, do not limit the application.

[0051] Figure 1 is a structural schematic diagram of a lubricating oil temperature regulating system according to an exemplary embodiment;

[0052] Figure 2 is a structural schematic diagram of another lubricating oil temperature regulating system according to an exemplary embodiment;

[0053] Figure 3 is a flow chart of a lubricating oil temperature regulating method according to an exemplary embodiment;

[0054] Figure 4 is a viscosity-temperature curve diagram according to an exemplary embodiment;

[0055] Figure 5 is a flow chart of another lubricating oil temperature regulating method according to an exemplary embodiment;

[0056] Figure 6 is a flow chart of another lubricating oil temperature regulating method according to an exemplary embodiment;

[0057] Figure 7 is a flow chart of another lubricating oil temperature regulating method according to an exemplary embodiment;

[0058] Figure 8 is a flow chart of another lubricating oil temperature regulating method according to an exemplary embodiment;

[0059] Figure 9 is a block diagram of a lubricating oil temperature regulating device according to an exemplary embodiment;

[0060] Figure 10 is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0061] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings.

[0062] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0063] The lubricating oil temperature adjusting method provided by the embodiments of the present application can be applied to a lubricating oil temperature adjusting system. Figure 1 A structural schematic diagram of a lubricating oil temperature adjusting system is shown. As shown in Figure 1 The lubricating oil temperature adjusting system 10 includes a controller 11 and an electric drive system 12. The controller 11 can be a vehicle control unit (VCU), and the electric drive system 12 includes lubricating oil, which is adjusted in temperature by the controller 11.

[0064] The controller 11 can obtain the operating state of the vehicle.

[0065] The controller 11 can also adjust the temperature of the lubricating oil based on the temperature of the lubricating oil and the ambient temperature when the operating state of the vehicle is a pre-start state, so that the temperature of the lubricating oil reaches a first temperature, which is determined based on the characteristic parameters of the lubricating oil.

[0066] In some embodiments, the controller 11 can heat the lubricating oil when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than a second temperature, so that the temperature of the lubricating oil reaches the first temperature, the second temperature being determined based on the characteristic parameters of the lubricating oil, and the second temperature being less than the first temperature.

[0067] In some embodiments, the controller 11 can also maintain the temperature of the lubricating oil in a first temperature range when the motor speed of the vehicle is less than a preset speed and the stator temperature of the motor is less than a third temperature, the third temperature being determined based on the characteristic parameters of the motor, and the first temperature range being determined based on the first temperature.

[0068] In some embodiments, the controller 11 can specifically heat the lubricating oil based on a maximum heating power of a heat exchange device of the vehicle; determine a first heating duration, the first heating duration being a duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power; and in a case where the first heating duration is greater than a first duration, heat the coolant in the heat exchange device by the heater so that the temperature of the lubricating oil reaches the first temperature within the first duration, the first duration being determined based on the second temperature.

[0069] In some embodiments, the controller 11 can further heat the temperature of the lubricating oil to reach the first temperature in a case where the first heating duration is less than or equal to the first duration.

[0070] In some embodiments, the controller 11 can specifically heat the coolant in the heat exchange device by the heater at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

[0071] In some embodiments, the controller 11 can further heat the lubricating oil by the heat exchange device of the vehicle in a case where the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature; and stop heating the lubricating oil in a case where a heating parameter for heating the lubricating oil meets a preset condition, the heating parameter meeting the preset condition being any one of: the temperature of the lubricating oil being greater than or equal to the first temperature, a heating duration for the lubricating oil being greater than a second duration, the second duration being determined based on a pre-start duration of the vehicle, the pre-start duration being a duration between a start of power-on of the vehicle and a start of driving of the vehicle.

[0072] In some embodiments, an upper limit of the first temperature range is determined according to a sum between the first temperature and a preset temperature difference, and a lower limit of the first temperature range is determined according to a difference between the first temperature and the preset temperature difference; the controller 11 can specifically heat the lubricating oil in a case where the temperature of the lubricating oil is less than the lower limit of the first temperature range; and stop heating the lubricating oil in a case where the temperature of the lubricating oil is greater than the upper limit of the first temperature range.

[0073] In some embodiments, the pre-start state is any one of: the vehicle being unlocked, the vehicle being switched from a power-off state to a power-on state and the vehicle speed being 0, the vehicle being in a lock state and the air conditioner being turned on.

[0074] In some embodiments, Figure 2 A structural schematic diagram of another lubricating oil temperature adjusting system is shown. As Figure 2As shown, the lubricating oil temperature regulation system can specifically include: a vehicle control system, a thermal management control system, a cooling circuit system, a heat exchange device, an electric drive system. Among them, the thermal management control system and the cooling circuit system include a heater (for example, a positive temperature coefficient (PTC) component), a waste heat system and a water pump. Specifically, the vehicle control system can obtain the ambient temperature from the cloud big data, and obtain the pre-start signal of the vehicle from the terminal APP. In addition, the vehicle control system can obtain the motor speed, the lubricating oil temperature and the stator temperature of the motor from the electric drive system. Then, the vehicle control system controls the thermal management control system to heat the coolant in the cooling circuit system through the PTC, the waste heat system and the water pump based on other vehicle waste heat temperature signals (such as the battery, the air conditioner, etc.), the required heating power and the water pump speed, so as to heat the lubricating oil in the electric drive system through the heat exchange device by the heat of the coolant.

[0075] For ease of understanding, the lubricating oil temperature regulation method provided by the present application is specifically introduced below in combination with the drawings.

[0076] Figure 3 A flow chart of a lubricating oil temperature regulation method according to an exemplary embodiment is shown in FIG. 1. Figure 3 As shown, the method includes the following S301-S302:

[0077] S301, obtaining the running state of the vehicle.

[0078] Optionally, the running state of the vehicle can be obtained from the VCU of the vehicle, or the running state of the vehicle can be obtained remotely from the cloud server and the terminal APP.

[0079] It should be noted that the running state of the vehicle is any of the following: a locked state (power-off state), a pre-start state, a driving state, etc. Among them, the pre-start state and the driving state can be considered as a power-on state. Specifically, the pre-start state can be understood as the vehicle being powered on but not driving, and in the pre-start state of the vehicle, the air conditioner can be turned on, the door can be opened, and the car machine (for example, playing multimedia, navigation, etc.) can be controlled.

[0080] In some embodiments, the pre-start state is any of the following: the vehicle is unlocked, the vehicle is switched from the power-off state to the power-on state and the vehicle speed is 0, and the vehicle is in the locked state and the air conditioner is turned on.

[0081] It can be understood that the vehicle is in a locked state and the air conditioner is turned on, which can be considered as that the user starts the air conditioner through the terminal APP in advance before using the vehicle. This state is a whole vehicle pre-start state signal recognition, which is only one of the signal judgment methods. The purpose is to identify the user's vehicle scene in advance based on this signal, and the vehicle scene can also be pre-judged by other methods. And the vehicle switches from the power-off state to the power-on state, which can be considered as the high-voltage power-on of the electric drive system. Its purpose is to identify whether the vehicle is started, and the same can be judged by other signals. The purpose is to identify the user's vehicle scene based on this signal to judge the active heating of the lubricating oil.

[0082] In the embodiment of the present application, the present application can determine whether the vehicle is in a pre-start state through a plurality of parameter conditions, so as to accurately determine the running state of the vehicle. And ensure that the temperature of the lubricating oil is adjusted only when the vehicle is not in a pre-start state, so as to improve the accuracy of adjusting the temperature of the lubricating oil.

[0083] S302, in the case that the running state of the vehicle is a pre-start state, based on the temperature of the lubricating oil of the vehicle and the ambient temperature, the temperature of the lubricating oil is adjusted to make the temperature of the lubricating oil reach a first temperature.

[0084] Among them, the first temperature is determined based on the characteristic parameters of the lubricating oil.

[0085] Optionally, in the case that the running state of the vehicle is determined to be a pre-start state, the temperature of the lubricating oil of the vehicle and the ambient temperature can be obtained.

[0086] Specifically, the temperature of the lubricating oil of the vehicle can be obtained from the vehicle through a temperature sensor, and the ambient temperature can be obtained in real time through cloud big data.

[0087] Optionally, in the case that the running state of the vehicle is determined to be a pre-start state, the VCU can wake up the electric drive system, and then the temperature signal of the lubricating oil is provided to the VCU through the electric drive system, so that the VCU can judge whether to adjust the temperature of the lubricating oil based on the temperature of the lubricating oil and the ambient temperature.

[0088] Optionally, when the temperature of the lubricating oil reaches the first temperature, the electric drive efficiency of the electric drive system can be higher. And the first temperature can be determined according to the viscosity-temperature curve of the lubricating oil. Different types of lubricating oil correspond to different viscosity-temperature curves, and the determined first temperature is also different. For example, Figure 4 As shown in the figure, the viscosity of the lubricating oil decreases with the increase of the temperature of the lubricating oil, wherein the first temperature, the second temperature and the fourth temperature of this type of lubricating oil are shown.

[0089] In the embodiments of the present application, the temperature of the lubricating oil can be adjusted based on the temperature of the lubricating oil and the ambient temperature when the vehicle is in the pre-starting state, so that the temperature of the lubricating oil reaches the first temperature determined based on the characteristic parameters of the lubricating oil. In this way, the temperature of the lubricating oil can be adjusted when the vehicle is in the pre-starting state. That is, based on the present solution, the temperature of the lubricating oil can be adjusted (heated) in advance before the vehicle starts to run, so that the temperature of the lubricating oil reaches a suitable temperature. Thus, when the vehicle starts to run, the temperature of the lubricating oil has already reached a suitable temperature, thereby improving the electric drive efficiency of the electric drive system when the vehicle is running.

[0090] In some embodiments, as shown in FIG. 5, Figure 5 The step S302 can include S501 in the lubricating oil temperature adjustment method provided by the embodiments of the present application.

[0091] S501, when the vehicle is in the pre-starting state, the temperature of the lubricating oil is less than the first temperature, and the ambient temperature is less than the second temperature, heating the lubricating oil so that the temperature of the lubricating oil reaches the first temperature.

[0092] The second temperature is determined based on the characteristic parameters of the lubricating oil, and the second temperature is less than the first temperature.

[0093] Optionally, when the vehicle is in the pre-starting state, the size relationship between the temperature of the lubricating oil and the first temperature can be determined first, and then the size relationship between the ambient temperature and the second temperature is determined when the temperature of the lubricating oil is less than the first temperature. Thus, only when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature, the lubricating oil is heated.

[0094] Optionally, when the temperature of the lubricating oil is greater than or equal to the first temperature, it means that the temperature of the lubricating oil is not particularly low (i.e., not lower than the first temperature), and at this time, the size relationship between the ambient temperature and the second temperature does not need to be determined again, and the motor speed and the stator temperature of the motor can be directly determined, so that the temperature of the lubricating oil is managed based on the motor speed and the stator temperature of the motor, so that the temperature of the lubricating oil is maintained at a suitable temperature (e.g., the first temperature range described below). For the specific process of determining the motor speed and the stator temperature of the motor in this case, please refer to the description below, which will not be described here.

[0095] In the embodiments of the present application, the lubricating oil can be reheated when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature, so that the temperature of the lubricating oil reaches the first temperature. In this way, when the temperature of the lubricating oil is less than the first temperature, it indicates that the low temperature of the lubricating oil will affect the electric drive efficiency, and when the ambient temperature is less than the second temperature, it indicates that the low ambient temperature will cause the temperature of the lubricating oil to rise slowly. Therefore, it is necessary to heat the lubricating oil under such circumstances to make the temperature of the lubricating oil reach the first temperature quickly, so as to improve the electric drive efficiency of the electric drive system when the vehicle is running.

[0096] In some embodiments, the method for adjusting the temperature of the lubricating oil provided by the embodiments of the present application can specifically include S5011-S5013 in the step S501 of "heating the lubricating oil so that the temperature of the lubricating oil reaches the first temperature".

[0097] S5011, heating the lubricating oil based on the maximum heating power of the heat exchange device of the vehicle.

[0098] Optionally, since the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature, it can be considered that the temperature of the lubricating oil is low and the temperature of the environment is low, and at this time, when the lubricating oil is heated, the temperature of the lubricating oil rises slowly, so it is necessary to heat the lubricating oil by the maximum heating power of the heat exchange device.

[0099] Specifically, the VCU sends a command to the thermal management system to control the water pump to run at the maximum power, so that the maximum heating power of the heat exchange device heats the lubricating oil.

[0100] S5012, determining the first heating duration.

[0101] The first heating duration is the duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power.

[0102] Optionally, in this case, since the temperature of the lubricating oil is low and the temperature of the environment is low, even if the lubricating oil is heated by the maximum heating power of the heat exchange device, it may still take a long time (greater than the first duration) to raise the temperature of the lubricating oil to the first temperature.

[0103] However, since the duration of the vehicle in the pre-start state will not be too long (for example, the first duration), it is necessary to determine whether the duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power meets the required time (i.e., the first duration) based on the current whole vehicle waste heat power (i.e., the maximum heating power of the heat exchange device).

[0104] S5013, in a case where the first heating duration is greater than the first duration, heating the coolant in the heat exchange device by the heater to cause the temperature of the lubricating oil to reach the first temperature within the first duration.

[0105] The first duration is determined based on the second temperature.

[0106] Optionally, when the duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power is greater than the first duration, it can be considered that the temperature of the lubricating oil is raised slowly when the lubricating oil is heated, and the coolant in the heat exchange device needs to be heated by the heater to increase the temperature raising speed of the lubricating oil, so that the temperature of the lubricating oil reaches the first temperature within the first duration.

[0107] For example, the thermal management system can start to heat the coolant by the PTC, and then raise the temperature of the lubricating oil to the first temperature by the heat exchange device.

[0108] In the embodiments of the present application, when the lubricating oil is heated, the maximum heating power of the heat exchange device is used to heat the lubricating oil, and the first heating duration consumed for heating the temperature of the lubricating oil to the first temperature at the maximum heating power of the heat exchange device is determined. If the first heating duration is greater than the first duration, it indicates that even if the lubricating oil is heated at the maximum heating power of the heat exchange device, the time consumed is relatively long, and therefore the coolant in the heat exchange device needs to be heated by the heater to cause the temperature of the lubricating oil to reach the first temperature within the first duration. In this way, the temperature of the lubricating oil can be quickly heated to a suitable temperature in a relatively short time, so as to ensure that the electric drive efficiency of the electric drive system of the vehicle is at a relatively high efficiency when the vehicle is running.

[0109] In some embodiments, the above-mentioned "heating the coolant in the heat exchange device by the heater" can specifically include: heating the coolant in the heat exchange device by the heater at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, and the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

[0110] Optionally, when the coolant in the heat exchange device is heated by the heater, the operating power of the heater can be calculated based on a difference between the temperature of the lubricating oil and the first temperature, and a difference between the duration for which the lubricating oil has been heated and the first duration. The specific calculation method can be determined based on the law of conservation of energy, which is not limited here.

[0111] In the embodiments of the present application, the target power can be determined based on the difference between the first temperature and the temperature of the lubricating oil, and the difference between the first time length and the time length during which the lubricating oil has been heated, when the cooling liquid in the heat exchange device is heated by the heater. Thus, the cooling liquid in the heat exchange device is heated by the heater at the target power. In this way, the cooling liquid in the heat exchange device can be heated at a suitable power, so that the heat exchange device heats the temperature of the lubricating oil to the first temperature within the first time length. The cooling liquid in the heat exchange device is not excessively heated, so that the energy consumed is saved.

[0112] In some embodiments, the temperature of the lubricating oil is heated to the first temperature when the first heating time length is less than or equal to the first time length.

[0113] Optionally, when the time length consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power is less than or equal to the first time length, the temperature of the lubricating oil can be quickly heated to the first temperature by the vehicle waste heat power (i.e., the maximum heating power of the heat exchange device), so that the cooling liquid in the heat exchange device does not need to be heated by the heater to improve the heating speed of the lubricating oil.

[0114] Therefore, in this case, the thermal management system can only use the vehicle waste heat to heat the cooling liquid at the maximum heating power, and the temperature of the lubricating oil is heated to the first temperature by the heat exchange device.

[0115] In the embodiments of the present application, when the time length consumed for heating the temperature of the lubricating oil to the first temperature at the maximum heating power of the heat exchange device is short, the lubricating oil can be directly heated without heating the cooling liquid in the heat exchange device by the heater. Thus, the energy consumed for heating the lubricating oil is saved.

[0116] In some embodiments, as shown in FIG. 1, the embodiments of the present application provide a lubricating oil temperature adjusting method, which can further include S601-S602: Figure 6

[0117] S601, when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature, heating the lubricating oil by the heat exchange device of the vehicle.

[0118] Optionally, when the ambient temperature is greater than or equal to the second temperature, it can be considered that the ambient temperature is not particularly low (i.e., not lower than the second temperature), and in this scenario, the temperature of the lubricating oil is quickly increased when the lubricating oil is heated. Therefore, the lubricating oil can be heated based on the heat exchange device (e.g., the thermal management system by the vehicle waste heat power). The heating power of the heat exchange device can be controlled according to the actual situation, and the lubricating oil does not need to be heated by the maximum heating power. ​

[0119] For example, the VCU can send instructions to the thermal management system, which exchanges heat with the cooling circuit using the vehicle's waste heat power, then heats the lubricating oil through the heat exchange device, and stops heating the lubricating oil after the lubricating oil temperature rises to a first temperature or the heating system runs for a second period of time.

[0120] It should be noted that for water-cooled electric drive systems, the heat exchange device can be a coolant circuit specifically set up on the electric drive system; for oil-cooled electric drive systems, the heat exchange device can be a cooling system consisting of a water cooler and an oil pump.

[0121] S602. When the heating parameters for heating the lubricating oil meet the preset conditions, stop heating the lubricating oil.

[0122] The heating parameters meet any of the following preset conditions: the temperature of the lubricating oil is greater than or equal to the first temperature, and the heating time of the lubricating oil is greater than the second time. The second time is determined based on the vehicle's pre-start time, which is the time between when the vehicle is powered on and when the vehicle starts to move.

[0123] It is understandable that heating the lubricating oil can be stopped when the temperature of the lubricating oil is greater than or equal to the first temperature, or when the heating time of the lubricating oil (i.e. the heating time for the lubricating oil to first reach the first temperature) is greater than the second time.

[0124] It should be noted that the second duration is primarily to prevent the lubricating oil from remaining at a constant temperature after the user starts the vehicle (vehicle pre-start state) without the vehicle running. The initial value of this second duration can be determined based on the duration of each vehicle pre-start state. For example, the duration of each vehicle pre-start state can be recorded, and after n times, the average value can be taken as the second duration. Furthermore, the duration of the vehicle pre-start state can be continuously recorded, and the second duration can be adjusted every n records.

[0125] This application embodiment can select a heating strategy based on ambient temperature, enabling more precise active heating of lubricating oil in low-temperature environments. Conversely, when the ambient temperature is high, the heating power can be reduced, minimizing vehicle energy consumption.

[0126] In the embodiment of the present application, the lubricating oil can be heated only by the heat exchange device when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature. In this way, when the ambient temperature is greater than or equal to the second temperature, it indicates that the ambient temperature is not particularly low, and the temperature of the lubricating oil can be quickly raised by heating the lubricating oil only by the heat exchange device. Moreover, by judging whether the heating parameter meets the preset condition, it is determined whether to stop heating the lubricating oil, so that the heating of the lubricating oil can be stopped when the temperature of the lubricating oil is greater than or equal to the first temperature, or the heating time of the lubricating oil is greater than the second time. In this way, when the lubricating oil is heated, the temperature of the lubricating oil will not be excessively raised, or the lubricating oil will not be heated for a long time, thereby saving the consumed energy.

[0127] In some embodiments, as shown in FIG. 7, the lubricating oil temperature adjusting method provided by the embodiment of the present application can further include S701: Figure 7

[0128] S701, when the motor speed of the vehicle is less than a preset speed and the stator temperature of the motor is less than a third temperature, maintaining the temperature of the lubricating oil in a first temperature interval.

[0129] The third temperature is determined based on a characteristic parameter of the motor, and the first temperature interval is determined according to the first temperature.

[0130] Optionally, after the temperature of the lubricating oil is heated to the first temperature (or the originally obtained temperature of the lubricating oil is greater than or equal to the first temperature) through the above process, the motor speed of the vehicle and the stator temperature of the motor can be further obtained.

[0131] Then, the size relationship between the motor speed and the preset speed is first judged, and when the motor speed is less than the preset speed, the size relationship between the stator temperature and the third temperature is further judged. Thus, when the motor speed of the vehicle is less than the preset speed and the stator temperature of the motor is less than the third temperature, the temperature of the lubricating oil is maintained in the first temperature interval.

[0132] It should be noted that the motor speed less than the preset speed can be considered as the vehicle driving at a slow speed, or the vehicle just starts to drive. Specifically, it can be judged whether the motor speed is 0. When the motor speed is 0, it indicates that the vehicle is not driving and is in a stationary state. When the motor speed is greater than 0, it indicates that the vehicle starts to drive and is in a driving state. The purpose of judging the motor speed is to judge whether the vehicle has entered the driving state. The motor speed is only one of the judgment methods, and the vehicle speed can also be used for judgment.

[0133] ​Optionally, when the motor speed is greater than or equal to the preset speed (or the motor speed is not 0), that is, the vehicle starts to run in the running state, it can be considered that the lubricating oil does not need to be heated, and the temperature of the lubricating oil can be gradually increased through the operation of the motor.

[0134] In the embodiments of the present application, the motor speed of the vehicle and the stator temperature of the motor can be further determined, so that in the case that the motor speed of the vehicle is less than the preset speed and the stator temperature of the motor is less than the third temperature determined based on the characteristic parameters of the motor, the temperature of the lubricating oil is maintained in the first temperature range. In this way, when the motor speed is low, that is, the vehicle has not started running or has just started running and the speed is slow, if the stator temperature of the motor is low, the temperature of the lubricating oil is maintained, so that the temperature of the lubricating oil is ensured to be in a suitable temperature range, so as to ensure that the electric drive efficiency of the electric drive system is in a high efficiency when the vehicle runs.

[0135] In some embodiments, the upper limit of the first temperature range is determined according to the sum of the first temperature and the preset temperature difference, and the lower limit of the first temperature range is determined according to the difference between the first temperature and the preset temperature difference; the above-mentioned "maintaining the temperature of the lubricating oil in the first temperature range" can specifically include: heating the lubricating oil in the case that the temperature of the lubricating oil is less than the lower limit of the first temperature range; or, stopping heating the lubricating oil in the case that the temperature of the lubricating oil is greater than the upper limit of the first temperature range.

[0136] In the embodiments of the present application, the first temperature range can be determined according to the first temperature, so that the temperature of the lubricating oil is always maintained in the first temperature range. Therefore, when the vehicle runs, the electric drive efficiency of the electric drive system is in a high efficiency.

[0137] In some embodiments, when the motor speed of the vehicle is less than the preset speed and the stator temperature of the motor is greater than or equal to the third temperature, the thermal management system can maintain the temperature of the lubricating oil in the second temperature range corresponding to the fourth temperature (that is, the temperature range obtained by adding or subtracting the preset temperature difference from the fourth temperature), heat the lubricating oil when the temperature of the lubricating oil is lower than the lower limit of the second temperature range, and stop heating the lubricating oil when the temperature of the lubricating oil is higher than the upper limit of the second temperature range. In this way, it is to prevent the stator temperature of the motor from overheating due to heating of the lubricating oil, and the fourth temperature can be determined according to the characteristics of the motor and the heating rate.

[0138] For example, Figure 8As shown, in the case of determining that the running state of the vehicle is the pre-start state, it is first judged whether the temperature of the lubricating oil is less than the first temperature. In the case of the temperature of the lubricating oil being less than the first temperature, it is judged whether the ambient temperature is less than the second temperature. Thus, when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than the second temperature, the lubricating oil can be directly heated by the vehicle waste heat until the temperature of the lubricating oil reaches the first temperature or the heating time exceeds the second time length. When the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature, the lubricating oil can be heated based on the maximum heating power of the heat exchange device, and it is judged whether the first heating time consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power is greater than the first time length. In the case of the first heating time being greater than the first time length, the coolant in the heat exchange device is heated by the heater. In the case of the first heating time being less than or equal to the first time length, the lubricating oil is heated only by the vehicle waste heat.

[0139] Further, if the temperature of the lubricating oil is greater than or equal to the first temperature or the temperature of the lubricating oil is heated to the first temperature, the motor speed can be obtained, and it is determined whether the motor speed is less than a preset speed. Thus, when the motor speed is greater than or equal to the preset speed, the lubricating oil can be heated without further heating. When the motor speed is less than the preset speed, it is further judged whether the stator temperature of the motor is less than a third temperature. In the case of the motor speed being less than the preset speed and the stator temperature being less than the third temperature, the temperature of the lubricating oil is maintained in the first temperature interval. In the case of the motor speed being less than the preset speed and the stator temperature being greater than or equal to the third temperature, the temperature of the lubricating oil is maintained in the second temperature interval. Finally, when the vehicle starts to run or the temperature of the lubricating oil is maintained for a second time length, the heating of the lubricating oil is ended.

[0140] The application can determine based on the vehicle state, actively warm up the lubricating oil in advance, reduce the viscosity of the lubricating oil, improve the electric drive efficiency of the vehicle in the pre-start stage, and reduce the dependence of the electric drive system on low-temperature and low-viscosity lubricating oil, and reduce the cost of the electric drive system. According to the characteristics of low-temperature viscosity and low efficiency of lubricating oil, and high-temperature viscosity and high efficiency, the lubricating oil is actively heated in the vehicle start stage by combining the vehicle thermal management system, the viscosity of the lubricating oil is reduced, the electric drive efficiency is improved, the dependence of the electric drive system on low-viscosity lubricating oil is reduced, and the vehicle cost is reduced.

[0141] The above describes the solutions provided by the embodiments of the present application from the method aspect. To implement the above functions, the lubricating oil temperature adjusting device or the electronic device comprises hardware structures and / or software modules corresponding to the functions. Those skilled in the art should easily realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented in hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven 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 the present application.

[0142] The embodiments of the present application can divide the lubricating oil temperature adjusting device or the electronic device into functional modules according to the above method. For example, the lubricating oil temperature adjusting device or the electronic device can comprise functional modules corresponding to each function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or software functional module. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical functional division. Actual implementation can have another division manner.

[0143] Figure 9 is a block diagram of a lubricating oil temperature adjusting device according to an example embodiment. Referring to Figure 9 The lubricating oil temperature adjusting device 900 comprises an acquisition module 901 and a processing module 902.

[0144] The acquisition module 901 is configured to acquire the running state of the vehicle. The processing module 902 is configured to, when the running state of the vehicle is a pre-start state, adjust the temperature of the lubricating oil based on the temperature of the lubricating oil and the ambient temperature, so that the temperature of the lubricating oil reaches a first temperature, and the first temperature is determined based on the characteristic parameters of the lubricating oil.

[0145] In a possible implementation, the processing module 902 is specifically configured to, when the temperature of the lubricating oil is less than the first temperature and the ambient temperature is less than a second temperature, heat the lubricating oil so that the temperature of the lubricating oil reaches the first temperature, and the second temperature is determined based on the characteristic parameters of the lubricating oil, and the second temperature is less than the first temperature.

[0146] In a possible implementation, the processing module 902 is further configured to, when the motor speed of the vehicle is less than a preset speed and the stator temperature of the motor is less than a third temperature, maintain the temperature of the lubricating oil in a first temperature interval, and the third temperature is determined based on the characteristic parameters of the motor, and the first temperature interval is determined according to the first temperature.

[0147] In a possible implementation, the processing module 902 is specifically configured to heat the lubricating oil based on a maximum heating power of a heat exchange device of the vehicle; the processing module 902 is specifically configured to determine a first heating duration, the first heating duration being a duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power; and the processing module 902 is specifically configured to heat, in a case where the first heating duration is greater than the first duration, the coolant in the heat exchange device by the heater, so that the temperature of the lubricating oil reaches the first temperature within the first duration, the first duration being determined based on the second temperature.

[0148] In a possible implementation, the processing module 902 is further configured to heat, in a case where the first heating duration is less than or equal to the first duration, the temperature of the lubricating oil to the first temperature.

[0149] In a possible implementation, the processing module 902 is specifically configured to heat, by the heater, the coolant in the heat exchange device at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, and the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

[0150] In a possible implementation, the processing module 902 is further configured to heat, in a case where the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature, the lubricating oil by the heat exchange device of the vehicle; and the processing module 902 is further configured to stop heating the lubricating oil in a case where a heating parameter for heating the lubricating oil satisfies a preset condition, the heating parameter satisfying the preset condition being any one of the following: the temperature of the lubricating oil is greater than or equal to the first temperature, and a heating duration for the lubricating oil is greater than a second duration, the second duration being determined based on a pre-start duration of the vehicle, the pre-start duration being a duration between a start of power-on of the vehicle and a start of driving of the vehicle.

[0151] In a possible implementation, an upper limit of the first temperature range is determined according to a sum between the first temperature and a preset temperature difference, and a lower limit of the first temperature range is determined according to a difference between the first temperature and the preset temperature difference; the processing module 902 is specifically configured to heat, in a case where the temperature of the lubricating oil is less than the lower limit of the first temperature range, the lubricating oil; and the processing module 902 is specifically configured to stop heating the lubricating oil in a case where the temperature of the lubricating oil is greater than the upper limit of the first temperature range.

[0152] In a possible implementation, the pre-start state is any one of the following: the vehicle is unlocked, the vehicle is switched from a power-off state to a power-on state and the vehicle speed is 0, and the vehicle is in a lock state and the air conditioner is turned on.

[0153] As to the apparatus in the above embodiments, the specific manners in which the respective modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0154] Figure 10 is a block diagram of an electronic device according to an example embodiment. As shown in Figure 10 , the electronic device 1000 includes, but is not limited to, a processor 1001 and a memory 1002.

[0155] The memory 1002 described above is configured to store executable instructions of the processor 1001 described above. It can be understood that the processor 1001 described above is configured to execute the instructions to implement the lubricating oil temperature adjustment method in the above embodiments.

[0156] It should be noted that those skilled in the art can understand that the electronic device structure shown in Figure 10 does not constitute a limitation on the electronic device, and the electronic device can include more or fewer components than those shown in Figure 10 , or combine certain components, or different component arrangements.

[0157] The processor 1001 is the control center of the electronic device, connects all parts of the electronic device through various interfaces and lines, and performs various functions of the electronic device and processes data by running or executing software programs and / or modules stored in the memory 1002 and calling data stored in the memory 1002, thereby overall monitoring the electronic device. The processor 1001 can include one or more processing units. Optionally, the processor 1001 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the modem processor described above can also not be integrated into the processor 1001.

[0158] The memory 1002 can be used to store software programs and various data. The memory 1002 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs (such as a processing module, etc.) required by at least one functional module, etc. In addition, the memory 1002 can include a high-speed random access memory, and can also include a non-volatile memory, for example, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0159] In an example embodiment, a computer-readable storage medium including instructions, for example, the memory 1002 including instructions, is also provided, and the instructions can be executed by the processor 1001 of the electronic device 1000 to implement the lubricating oil temperature adjustment method in the above embodiments.

[0160] In actual implementation, Figure 9 The functions of the acquisition module 901 and the processing module 902 in the device can be implemented by the processor 1001 in the device calling the computer program stored in the memory 1002. The specific execution process can refer to the description of the lubricating oil temperature adjusting method in the above embodiment, which will not be repeated here. Figure 10 The functions of the acquisition module 901 and the processing module 902 in the device can be implemented by the processor 1001 in the device calling the computer program stored in the memory 1002. The specific execution process can refer to the description of the lubricating oil temperature adjusting method in the above embodiment, which will not be repeated here.

[0161] Alternatively, the computer readable storage medium can be a non-transitory computer readable storage medium, for example, the non-transitory computer readable storage medium can be a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a CD-ROM, a magnetic tape, a floppy disk and an optical data storage device, etc.

[0162] In the exemplary embodiments, the embodiments of the present application also provide a computer program product including one or more instructions, which can be executed by the processor 1001 of the electronic device 1000 to complete the lubricating oil temperature adjusting method in the above embodiments.

[0163] It should be noted that the instructions in the above computer readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device to realize each process of the above lubricating oil temperature adjusting method embodiment, and can achieve the same technical effect as the above lubricating oil temperature adjusting method. To avoid repetition, it will not be repeated here.

[0164] Through the description of the above embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of functional modules is taken as an example, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete the above described full classification part or part of the function.

[0165] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be through some interface, indirect coupling or communication connection between devices or units, which can be electrical, mechanical or other forms.

[0166] The units described as separate components may or may not be physically separate, and the components displayed as units may be a physical unit or multiple physical units, that is, may be located in one place, or also can be distributed to multiple different places. Part or all of the classified units can be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0167] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0168] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application essentially or the part of the prior art that contributes to the technical solutions or the whole classification or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for making a device (which can be a single-chip microcomputer, a chip, etc.) or a processor execute all or part of the steps of the method of each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various storage medium that can store program codes.

[0169] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of regulating the temperature of lubricating oil, characterized by, The method comprises: obtaining an operating state of a vehicle; in a case where the operating state of the vehicle is a pre-start state, a temperature of lubricating oil of the vehicle is less than a first temperature, and an ambient temperature is less than a second temperature, heating the lubricating oil based on a maximum heating power of a heat exchange device of the vehicle, the first temperature being determined based on a characteristic parameter of the lubricating oil, the second temperature being determined based on the characteristic parameter of the lubricating oil, and the second temperature being less than the first temperature; determining a first heating duration, the first heating duration being a duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power; in a case where the first heating duration is greater than a first duration, heating coolant in the heat exchange device by a heater to cause the temperature of the lubricating oil to reach the first temperature within the first duration, the first duration being determined based on the second temperature.

2. The method of claim 1, wherein, The method further comprises: in a case where a motor speed of the vehicle is less than a preset speed and a stator temperature of the motor is less than a third temperature, maintaining the temperature of the lubricating oil in a first temperature range, the third temperature being determined based on a characteristic parameter of the motor, and the first temperature range being determined according to the first temperature.

3. The method of claim 1, wherein, The method further comprises: in a case where the first heating duration is less than or equal to the first duration, heating the temperature of the lubricating oil to reach the first temperature.

4. The method of claim 1, wherein, The heating of the coolant in the heat exchange device by the heater comprises: heating, by the heater, the coolant in the heat exchange device at a target power, the target power being determined based on a target temperature difference and a target duration, the target temperature difference being a difference between the first temperature and the temperature of the lubricating oil, and the target duration being a difference between the first duration and a second heating duration, the second heating duration being a duration for which the lubricating oil has been heated.

5. The method of claim 1, wherein, The method further comprises: in a case where the temperature of the lubricating oil is less than the first temperature and the ambient temperature is greater than or equal to the second temperature, heating the lubricating oil by the heat exchange device of the vehicle; in a case where a heating parameter for heating the lubricating oil satisfies a preset condition, stopping heating the lubricating oil, the heating parameter satisfying the preset condition being any one of the following: the temperature of the lubricating oil is greater than or equal to the first temperature, and a heating duration for the lubricating oil is greater than a second duration, the second duration being determined based on a pre-start duration of the vehicle, the pre-start duration being a duration between a start of power-on of the vehicle and a start of driving of the vehicle.

6. The method of claim 2, wherein, an upper limit of the first temperature range being determined according to a sum between the first temperature and a preset temperature difference, and a lower limit of the first temperature range being determined according to a difference between the first temperature and the preset temperature difference; the maintaining of the temperature of the lubricating oil in the first temperature range comprises: in a case where the temperature of the lubricating oil is less than the lower limit of the first temperature range, heating the lubricating oil; in a case where the temperature of the lubricating oil is greater than the upper limit of the first temperature range, stopping heating the lubricating oil.

7. The method of claim 1, wherein, The pre-starting state is any one of the following: the vehicle is unlocked, the vehicle switches from a powered-off state to a powered-on state and the vehicle speed is 0, the vehicle is in a locked state and the air conditioner is turned on.

8. A lubricating oil temperature regulating device characterized by comprising: The lubricating oil temperature adjusting device comprises an acquisition module and a processing module; The acquisition module is configured to acquire the running state of the vehicle. The processing module is configured to heat the lubricating oil based on the maximum heating power of the heat exchange device of the vehicle in the case that the running state of the vehicle is a pre-starting state, the temperature of the lubricating oil of the vehicle is less than a first temperature, and the ambient temperature is less than a second temperature, the first temperature being determined based on the characteristic parameters of the lubricating oil, and the second temperature being determined based on the characteristic parameters of the lubricating oil, the second temperature being less than the first temperature. The processing module is further configured to determine a first heating duration, the first heating duration being the duration consumed for heating the temperature of the lubricating oil to the first temperature based on the maximum heating power. The processing module is further configured to heat the coolant in the heat exchange device by a heater to make the temperature of the lubricating oil reach the first temperature within a first duration in the case that the first heating duration is greater than the first duration, the first duration being determined based on the second temperature.

9. An electronic device, comprising: Comprise: A processor; A memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method of any one of claims 1-7.

10. A vehicle characterized by comprising: The vehicle comprises the lubricating oil temperature adjusting device of claim 8, and is used to implement the method of any one of claims 1-7.

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