Lubricating method, device and equipment of electric drive assembly and computer readable storage medium

Abstract

The invention relates to the technical field of vehicles, and provides a lubricating method, device and equipment for an electric drive assembly and a storage medium. The method comprises the steps that after the electric drive assembly is powered on, oil temperature data are obtained; determining pre-lubricating duration according to the oil temperature data; and based on the pre-lubricating duration, an electronic oil pump is controlled to pre-lubricate the electric drive assembly before the electric drive assembly is started. By means of the technical scheme, the problem that in the prior art, after long-time parking, the bearing can run for a certain time without oil, and consequently damage is possibly caused can be solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a lubrication method, device, equipment and computer-readable storage medium for an electric drive assembly. Background Art

[0002] At present, after a vehicle has been parked for a long time, the lubricating oil of the bearings of the oil-cooled electric drive assembly drips into the oil pan due to gravity, and the residual lubricating oil film on the bearings will not be sufficient to provide adequate protection for the bearings. The lubricating oil delivered by the oil pump needs to fill the oil channel before it can reach the bearings, especially the rear bearing of the motor. The filling process takes a certain amount of time, and the bearings at this location cannot be splash-lubricated by stirring the oil. Since the bearings will need to run without oil for a certain period of time, there is a risk of wear and ablation.

[0003] It can be seen that in the prior art, there is a problem that after a long period of parking, the bearing will run without oil for a certain period of time, which may cause damage. Summary of the invention

[0004] In view of the above problems, the present application provides a lubrication method, device, equipment and computer-readable storage medium for an electric drive assembly, which is used to solve the problem in the prior art that after long-term parking, the bearings will run without oil for a certain period of time and may cause damage.

[0005] According to a first aspect of an embodiment of the present application, a lubrication method for an electric drive assembly is provided, the method comprising: obtaining oil temperature data after the electric drive assembly is powered on; determining a pre-lubrication time according to the oil temperature data; and based on the pre-lubrication time, controlling an electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly.

[0006] In an optional manner, determining the pre-lubrication time according to the oil temperature data further includes: determining the electronic oil pump speed according to the oil temperature data; and obtaining the pre-lubrication time according to the electronic oil pump speed.

[0007] In an optional manner, based on the pre-lubrication duration, controlling the electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started further includes: based on the electronic oil pump speed and the pre-lubrication duration, controlling the electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started.

[0008] In an optional manner, obtaining the pre-lubrication time according to the rotational speed of the electronic oil pump further includes: obtaining the pre-lubrication time according to the volume of the oil channel, the displacement of the electronic oil pump and the rotational speed of the electronic oil pump.

[0009] In an optional manner, determining the electronic oil pump speed based on the oil temperature data further includes: if the oil temperature data is less than or equal to a first preset temperature threshold, determining the electronic oil pump speed to be the first preset speed; if the oil temperature data is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, determining the electronic oil pump speed to be the second preset speed; if the oil temperature data is greater than the second preset temperature threshold, determining the electronic oil pump speed to be the third preset speed.

[0010] In an optional manner, after controlling the electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started based on the pre-lubrication duration, the method further includes: if a target electronic oil pump speed request is detected during the pre-lubrication process, responding to the target electronic oil pump speed request; wherein the target electronic oil pump speed request is generated by the electronic oil pump in response to the drive motor.

[0011] In an optional manner, the method further comprises: if no target electronic oil pump speed request is detected after the pre-lubrication is completed, then the current shutdown time is counted from the end of the pre-lubrication, after the electronic oil pump is controlled to pre-lubricate the electronic drive assembly before the electronic drive assembly is started;

[0012] If the current downtime duration is greater than the preset downtime duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly.

[0013] According to a second aspect of an embodiment of the present application, a lubrication device for an electric drive assembly is provided, the device comprising: an acquisition module, for acquiring oil temperature data if it is detected that a current downtime is greater than a preset downtime; a determination module, for determining a pre-lubrication time according to the oil temperature data; and a control module, for controlling an electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started, based on the pre-lubrication time.

[0014] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising: a controller; a memory for storing one or more programs, wherein when the one or more programs are executed by the controller, the controller implements the following operations of the lubrication method of the electric drive assembly: after the electric drive assembly is powered on, obtaining oil temperature data; determining a pre-lubrication time according to the oil temperature data; and based on the pre-lubrication time, controlling an electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly.

[0015] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein a computer program is stored in the storage medium, wherein the computer program includes at least one executable instruction, and when the executable instruction is run on a lubrication device / electronic device of an electric drive assembly, the lubrication device / electronic device of the electric drive assembly performs the following operations of the lubrication method of the electric drive assembly: obtaining oil temperature data after the electric drive assembly is powered on; determining a pre-lubrication time based on the oil temperature data; and controlling an electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly based on the pre-lubrication time.

[0016] The embodiment of the present application obtains oil temperature data after the electric drive assembly is powered on, and immediately starts the pre-lubrication program after power-on. In this way, there is no need to consider the time from the last parking to the low-voltage power-on of the electric drive assembly this time, and there is no need to set up an additional timing module. The state of the lubricating oil can be judged according to the oil temperature data, and the pre-lubrication time can be determined according to the lubrication state of the lubricating oil, so that within the pre-lubrication time, the electronic oil pump can be controlled to output sufficient lubricating oil, so that the output amount of lubricating oil can pre-lubricate the electric drive assembly, thereby preventing dry friction of the bearings of the electric drive assembly during operation and increasing the service life of the electric drive assembly.

[0017] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of an implementation environment involved in this application;

[0020] Figure 2 A flow chart showing a first embodiment of a lubrication method for an electric drive assembly provided by the present application;

[0021] Figure 3 A flow chart showing a second embodiment of a lubrication method for an electric drive assembly provided by the present application;

[0022] Figure 4 A structural schematic diagram of an embodiment of a lubrication device for an electric drive assembly provided by the present application is shown;

[0023] Figure 5 A schematic structural diagram of an embodiment of an electronic device provided by the present application is shown. DETAILED DESCRIPTION

[0024] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0025] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0026] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0027] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0028] Figure 1 A schematic diagram of an implementation environment involved in this application.

[0029] Figure 1 The implementation environment shown is specifically the lubrication system of the electric drive assembly, including: an oil pan 110, an oil temperature sensor 120, a suction filter 130, an electronic oil pump 140, an oil temperature cooler 150 and an electric drive assembly 160. In the prior art, after the vehicle has been parked for a long time, the lubricating oil of the bearings of the oil-cooled electric drive assembly 160 drips into the oil pan 110 due to gravity, and the lubricating oil film remaining on the bearing will not be sufficient to provide adequate protection for the bearing. In the technical solution of the present application, before the electric drive assembly 160 is started, the electronic oil pump 140 can filter the lubricating oil in the oil pan 110 through the suction filter 130, and cool it through the oil cooler 150, and then enter the driving electric drive assembly 160 to lubricate and cool the electric drive assembly 160. The oil temperature sensor 120 is used to detect the temperature of the lubricating oil.

[0030] Figure 2The flowchart of the first embodiment of a lubrication method for an electric drive assembly provided by the present application is shown, and the method is executed by a vehicle. Figure 2 As shown, the method comprises the following steps:

[0031] Step S110: After the electric drive assembly is powered on, oil temperature data is obtained;

[0032] Among them, after the electric drive assembly is shut down for a long time, the lubricating oil of the bearings of the oil-cooled electric drive assembly drips into the oil pan due to gravity, and the lubricating oil film remaining on the bearing will not be enough to provide adequate protection for the bearing. After the electric drive assembly is powered on, the oil temperature data is obtained to determine the viscosity of the lubricating oil based on the oil temperature data. After power is turned on, the oil-cooled electric drive assembly is pre-lubricated, so that the time from the last shutdown to the low-voltage power-on of the electric drive assembly does not need to be considered, and there is no need to set up an additional timing module.

[0033] Step S120: determining the pre-lubrication time according to the oil temperature data;

[0034] Among them, the oil temperature data is related to the pre-lubrication time. The lower the oil temperature data, the longer the lubrication time required, and vice versa. By obtaining the oil temperature data, the viscosity of the lubricating oil can be determined, and then the pre-lubrication time can be determined according to the viscosity of the lubricating oil to meet the lubrication requirements of the electric drive assembly.

[0035] Step S130: Based on the pre-lubrication time, controlling the electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly.

[0036] Among them, according to the determined pre-lubrication time, the electric drive assembly is pre-lubricated after the electric drive assembly is powered on and before the electric drive assembly is started, so that the electric drive assembly is pre-lubricated before operation, and the lubricating oil flows into the interior of the electric drive assembly to prevent dry friction of the bearings of the electric drive assembly when the electric drive assembly is running, thereby increasing the service life of the electric drive assembly.

[0037] By acquiring the oil temperature data after the electric drive assembly is powered on, the pre-lubrication program is started immediately after power-on, so that the time from the last parking to the low-voltage power-on of the electric drive assembly does not need to be considered, and there is no need to set up an additional timing module. The state of the lubricating oil can be judged according to the oil temperature data, and the pre-lubrication time can be determined according to the lubrication state of the lubricating oil, so that within the pre-lubrication time, the electronic oil pump can be controlled to output sufficient lubricating oil, so that the output lubricating oil amount can pre-lubricate the electric drive assembly, thereby preventing dry friction of the bearings of the electric drive assembly during operation and increasing the service life of the electric drive assembly.

[0038] Figure 3 A flow chart of a second embodiment of a lubrication method for an electric drive assembly provided by the present application is shown, and the method is performed by a vehicle. Figure 3 As shown, the determining of the pre-lubrication time according to the oil temperature data further comprises the following steps:

[0039] Step S210: determining the electronic oil pump speed according to the oil temperature data.

[0040] Among them, the lower the temperature of the lubricating oil, the lower the speed of the electronic oil pump, and the less oil the electronic oil pump can output. Only when the temperature of the lubricating oil rises to the preset temperature threshold, the actual speed of the electronic oil pump can follow the requested speed of the electronic oil pump. It should be noted that the oil temperature data can be obtained by detecting the oil temperature sensor. Considering the NVH (Noise, Vibration, Harshness) performance, the electronic oil pump speed is set lower than the preset speed threshold to ensure the NVH performance requirements.

[0041] Specifically, if the oil temperature data is less than or equal to a first preset temperature threshold, the electronic oil pump speed is determined to be a first preset speed;

[0042] For example, when the oil temperature data T is less than or equal to -30 degrees Celsius, the first preset speed can be determined to be N1. Specifically, the first preset speed at the oil temperature can be obtained by calibration.

[0043] If the oil temperature data is greater than a first preset temperature threshold and less than or equal to a second preset temperature threshold, determining that the electronic oil pump speed is a second preset speed;

[0044] For example, when the oil temperature data T is greater than -30 degrees Celsius and less than or equal to 0 degrees Celsius, the second preset speed can be determined to be N1. Specifically, the second preset speed at the oil temperature can be obtained by calibration.

[0045] If the oil temperature data is greater than the second preset temperature threshold, the electronic oil pump speed is determined to be a third preset speed.

[0046] For example, when the oil temperature data T is greater than 0 degrees Celsius, the third preset speed can be determined to be N3, and the first preset speed at the oil temperature can be obtained by calibration.

[0047] Step S220: Obtaining the pre-lubrication duration according to the electronic oil pump rotation speed.

[0048] Specifically, based on the electronic oil pump speed and the pre-lubrication time, the electronic oil pump is controlled to pre-lubricate the electric drive assembly before the electric drive assembly is started. The lower the electronic oil pump speed, the less lubricating oil is output. The pre-lubrication time can be determined according to the electronic oil pump speed, so that lubricating oil of a preset lubricating oil amount threshold can be output within the determined pre-lubrication time, so that the electric drive assembly can be fully lubricated.

[0049] In another embodiment of the present application, obtaining the pre-lubrication time according to the electronic oil pump rotation speed further includes: obtaining the pre-lubrication time according to the oil channel volume, the displacement of the electronic oil pump and the electronic oil pump rotation speed.

[0050] In this embodiment, the pre-lubrication duration is related to the oil channel volume of the electronic oil pump, the displacement of the electronic oil pump, and the rotation speed of the electronic oil pump.

[0051] The pre-lubrication time t can be calculated using the following formula:

[0052]

[0053] in,

[0054] V represents the oil channel volume, and its unit is L;

[0055] q represents the displacement of the electronic oil pump, and its unit is ml / r;

[0056] N represents the speed of the electronic oil pump, and its unit is rpm;

[0057] 60 means converting the pre-lubrication time in minutes into seconds.

[0058] It should be noted that a certain margin may be considered when setting the pre-lubrication time, and the actual pre-lubrication time set may be the sum of the pre-lubrication time and the preset margin threshold.

[0059] In another embodiment of the present application, after controlling the electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly based on the pre-lubrication time, the method further includes:

[0060] If a target electronic oil pump speed request is detected during the pre-lubrication process, the target electronic oil pump speed request is responded to; wherein the target electronic oil pump speed request is generated by the electronic oil pump in response to the drive motor.

[0061] In this embodiment, the electric drive assembly generates a target electronic oil pump speed request to the electronic oil pump during operation, so that the electronic oil pump works and satisfies the oil cooling demand of the electric drive assembly. In actual use, the user may be in a hurry to drive away, and after the electric drive assembly is powered on, the electric drive assembly is started within the pre-lubrication time so that the user can drive away. At the same time as the electric drive assembly is started, a target electronic oil pump speed request is generated to the electronic oil pump, so that the electronic oil pump starts working and satisfies the lubrication demand of the electric drive assembly. If the target electronic oil pump speed request is received within the pre-lubrication time, the electronic oil pump speed request of the pre-lubrication process is exited to satisfy the target electronic oil pump speed request when the electric drive assembly is working.

[0062] In another embodiment of the present application, after controlling the electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly based on the pre-lubrication time, the method further includes:

[0063] If the target electronic oil pump speed request is not detected after the pre-lubrication is completed, the current shutdown time is counted from the time the pre-lubrication is completed;

[0064] If the current downtime duration is greater than the preset downtime duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly.

[0065] In this embodiment, the preset shutdown duration is the duration required for the lubricating oil remaining on the bearings of the electric drive assembly after shutdown to be insufficient to provide adequate protection for the bearings. The current shutdown duration is the duration from the last shutdown of the electric drive assembly to this moment. The current shutdown duration of the electric drive assembly is detected to determine whether the lubricating oil in the electric drive assembly has dripped into the oil pan. In actual use, after the electric drive assembly is powered on and pre-lubrication is completed, the user does not start the vehicle and leave. At this time, the electric drive assembly has been pre-lubricated. After a long shutdown, the lubricating oil may still fall into the oil pan. In this case, the current shutdown duration starts to be counted after the pre-lubrication is completed, and the pre-lubrication process is performed again when the current shutdown duration reaches the preset shutdown duration.

[0066] Figure 4 The schematic diagram of the structure of an embodiment of a lubrication device for an electric drive assembly provided by the present application is shown. Figure 4 As shown, the device 400 includes: an acquisition module 410 , a determination module 420 and a control module 430 .

[0067] The acquisition module 410 is used to acquire oil temperature data after the electric drive assembly is powered on;

[0068] A determination module 420, configured to determine a pre-lubrication time according to the oil temperature data;

[0069] The control module 430 is configured to control the electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started based on the pre-lubrication duration.

[0070] It should be noted that the lubrication device of the drive assembly provided in the above embodiment and the lubrication method of the drive assembly provided in the aforementioned embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here.

[0071] Figure 5 A schematic diagram of the structure of an embodiment of an electronic device provided by the present application is shown, which shows a schematic diagram of the structure of a computer system suitable for implementing the electronic device of the embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the electronic device.

[0072] See also Figure 5 As shown, the electronic device includes: a controller; a memory for storing one or more programs, and when the one or more programs are executed by the controller, the above-mentioned lubrication method of the drive assembly is executed.

[0073] Please continue reading Figure 5 As shown, the computer system 500 of the electronic device includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In RAM 503, various programs and data required for system operation are also stored. CPU 501, ROM 502 and RAM 503 are connected to each other through bus 504. Input / output (I / O) interface 505 is also connected to bus 504.

[0074] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0075] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0076] Another aspect of the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the lubrication method of the drive assembly as described above is implemented. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0077] Another aspect of the present application also provides a computer program product or a computer program, which includes at least one executable instruction, and when the executable instruction is run on the lubrication device / electronic device of the drive assembly, the lubrication device / electronic device of the drive assembly executes the lubrication method of the drive assembly as described above.

[0078] The executable instructions may be specifically used to cause the lubrication device / electronic device of the drive assembly to perform the following operations:

[0079] After the electric drive assembly is powered on, obtain the oil temperature data;

[0080] determining the pre-lubrication time according to the oil temperature data;

[0081] Based on the pre-lubrication duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly before the electric drive assembly is started.

[0082] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0083] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0084] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0085] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0086] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0087] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A lubrication method for an electric drive assembly, characterized in that: The method comprises: After the electric drive assembly is powered on, obtain the oil temperature data; determining the pre-lubrication time according to the oil temperature data; Based on the pre-lubrication duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly before the electric drive assembly is started.

2. The lubrication method for an electric drive assembly according to claim 1, characterized in that: The step of determining the pre-lubrication time according to the oil temperature data further includes: determining the speed of the electronic oil pump according to the oil temperature data; The pre-lubrication duration is obtained according to the rotation speed of the electronic oil pump.

3. The lubrication method for an electric drive assembly according to claim 2, characterized in that: Based on the pre-lubrication time, controlling the electronic oil pump to pre-lubricate the electric drive assembly before starting the electric drive assembly further includes: Based on the electronic oil pump rotation speed and the pre-lubrication duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly before the electric drive assembly is started.

4. The lubrication method for an electric drive assembly according to claim 2, characterized in that: The method of obtaining the pre-lubrication time according to the speed of the electronic oil pump further includes: The pre-lubrication time is obtained according to the oil channel volume, the displacement of the electronic oil pump and the speed of the electronic oil pump.

5. The lubrication method for an electric drive assembly according to claim 2, characterized in that: The step of determining the electronic oil pump speed according to the oil temperature data further includes: If the oil temperature data is less than or equal to a first preset temperature threshold, determining that the electronic oil pump speed is a first preset speed; If the oil temperature data is greater than a first preset temperature threshold and less than or equal to a second preset temperature threshold, determining that the electronic oil pump speed is a second preset speed; If the oil temperature data is greater than the second preset temperature threshold, the electronic oil pump speed is determined to be a third preset speed.

6. The lubrication method for an electric drive assembly according to claim 1, characterized in that: After controlling the electronic oil pump to pre-lubricate the electric drive assembly based on the pre-lubrication time before the electric drive assembly is started, the method further includes: If a target electronic oil pump speed request is detected during the pre-lubrication process, the target electronic oil pump speed request is responded to; wherein the target electronic oil pump speed request is generated by the electronic oil pump in response to the drive motor.

7. The lubrication method for an electric drive assembly according to claim 1, characterized in that: After controlling the electronic oil pump to pre-lubricate the electric drive assembly based on the pre-lubrication time before the electric drive assembly is started, the method further includes: If the target electronic oil pump speed request is not detected after the pre-lubrication is completed, the current shutdown time is counted from the end of the pre-lubrication; If the current downtime duration is greater than the preset downtime duration, the electronic oil pump is controlled to pre-lubricate the electric drive assembly.

8. A lubrication device for an electric drive assembly, characterized in that: The device comprises: An acquisition module is used to obtain oil temperature data after the electric drive assembly is powered on; A determination module, used to determine the pre-lubrication time according to the oil temperature data; The control module is used to control the electronic oil pump to pre-lubricate the electric drive assembly before the electric drive assembly is started based on the pre-lubrication time.

9. An electronic device, characterized in that: include: Controller; The memory is used to store one or more programs. When the one or more programs are executed by the controller, the controller implements the lubrication method of the electric drive assembly according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which includes at least one executable instruction. When the executable instruction is executed on the lubrication device / electronic device of the electric drive assembly, the lubrication device / electronic device of the electric drive assembly performs the operation of the lubrication method of the electric drive assembly as described in any one of claims 1-7.

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