Hybrid machine electrical coupling box cooling and lubricating system, method and medium

Abstract

The application provides a hybrid motor and electric coupling box cooling and lubricating system, method and medium, and belongs to the technical field of hybrid vehicle control, and comprises a generator, a driving motor and a gear box which are connected with one end of a control slide valve; the other end of the generator is connected with the gear box and the control slide valve pipeline through a first one-way valve; the other end of the driving motor is connected with the gear box and the control slide valve pipeline through a second one-way valve; the pipeline between the generator and the first one-way valve is connected with the pipeline between the driving motor and the control slide valve through a third one-way valve; the other end of the gear box is connected with a first oil pan; and one end of the control slide valve is connected with the pipeline between the generator and the first one-way valve. The position of the slide valve is switched, so that the cooling and lubricating demand of the dual-motor electromechanical coupler is comprehensively covered; through the feedback of a temperature sensor and the flow control of an electric oil pump, the accurate control of the cooling and lubricating flow in the assembly can be realized.

Description

Technical Field

[0001] The present invention provides a hybrid electric coupling box cooling and lubricating system, method and medium, belonging to the technical field of hybrid vehicle control. Background Art

[0002] Currently, amidst the energy and environmental crises, automakers worldwide are vigorously promoting the research and development of new energy vehicles. Compared to traditional fuel vehicles, hybrid vehicles (HEVs) meet the general requirements of energy conservation and emission reduction while eliminating the concerns of limited range and long charging times. They are a practical and effective solution at this stage, leading the country to prioritize energy-saving vehicles. Furthermore, since 2021, hybrid vehicle sales have surged, with significant sales growth demonstrating the growing market acceptance of hybrid products, which is expected to continue to increase in the foreseeable future.

[0003] Hybrid vehicles typically feature a specially designed, highly integrated DHT electromechanical coupling box. This box integrates two electric motors, a complete gear train, and the associated clutch and shift mechanisms. Its structure is complex, requiring numerous components for lubrication and cooling. Furthermore, because hybrid systems operate in multiple modes, the lubrication and cooling requirements of each component vary. Furthermore, different components within the system have varying optimal operating temperature ranges. Therefore, optimizing the internal lubrication and cooling solution is highly valuable. Existing DHT electromechanical coupling boxes typically employ a simplified redundant design, bypassing control valves to control flow distribution. Instead, they utilize fixed lubrication and cooling circuits, relying on variable pump displacement under varying operating conditions to consistently meet actual flow requirements. This approach offers advantages such as simple structure and control, as well as low cost. However, it lacks on-demand lubrication, and excessive lubrication oil supply results in energy loss and reduced efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the existing problems and propose a hybrid electromechanical coupling box cooling and lubrication system, method and medium. By switching the position of the slide valve, six cooling and lubrication modes can be realized, thereby achieving comprehensive coverage of the cooling and lubrication needs of the dual-motor electromechanical coupler. Through feedback from the temperature sensor and combined with the flow control of the electric oil pump, precise control of the cooling and lubrication flow in the assembly can be achieved.

[0005] The problem to be solved by the present invention is achieved by the following technical solutions:

[0006] According to a first aspect of an embodiment of the present invention, a hybrid electric and mechanical coupling box cooling and lubrication system is provided, comprising a generator, a drive motor, and a gearbox, one end of which is connected to one end of a control slide valve, the other end of the generator being connected to the gearbox and the control slide valve pipeline via a first one-way valve, the other end of the drive motor being connected to the gearbox and the control slide valve pipeline via a second one-way valve, the pipeline between the generator and the first one-way valve and the pipeline between the drive motor and the control slide valve being connected via a third one-way valve, the other end of the gearbox being connected to a first oil pan, one end of the control slide valve being connected to the pipeline between the generator and the first one-way valve, the other end of the control slide valve being respectively connected to a heat exchanger and one end of a second oil pan, the other end of the heat exchanger being connected to one end of an electric pump, the other end of the electric pump being connected to the third oil pan, and the other end of the control slide valve being connected to the pipeline connecting the heat exchanger and the electric pump.

[0007] Preferably, a temperature sensor is provided in the third oil pan.

[0008] Preferably, the heat exchanger can be connected to the generator, drive motor and gearbox respectively through a control slide valve, the heat exchanger and electric pump connecting pipeline can be connected to the gearbox through a control slide valve, and the second oil pan can be connected to the pipeline between the generator and the first one-way valve through a control slide valve.

[0009] According to a second aspect of an embodiment of the present invention, a hybrid electric and mechanical coupling box cooling and lubrication method is provided, characterized in that it is applied to the hybrid electric and mechanical coupling box cooling and lubrication system described in the first aspect, comprising:

[0010] Determine whether the vehicle is in driving state, if so, proceed to the next step;

[0011] Determine whether the engine is running, if so, proceed to the next step;

[0012] Determine whether it is in pure electric drive + driving power generation mode:

[0013] If yes, execute the third cooling and lubrication mode;

[0014] If no, proceed to the next step;

[0015] Determine whether it is in engine direct drive mode:

[0016] If yes, execute the fifth cooling and lubrication mode;

[0017] If no, proceed to the next step;

[0018] Determine whether it is in engine direct drive + driving power generation mode:

[0019] If yes, execute the second cooling and lubrication mode;

[0020] If no, proceed to the next step;

[0021] Determine whether it is in engine direct drive + low temperature environment mode:

[0022] If yes, execute the sixth cooling and lubrication mode;

[0023] If no, proceed to the next step;

[0024] Whether it is in BOOST mode:

[0025] If yes, execute the third cooling and lubrication mode;

[0026] No, report an error.

[0027] Preferably, when the engine is not running, it is determined whether it is in a pure electric driving state:

[0028] If yes, execute the fourth cooling and lubrication mode;

[0029] If no, proceed to the next step;

[0030] Determine whether it is in the braking energy recovery state:

[0031] If yes, execute the fourth cooling and lubrication mode;

[0032] No, report an error.

[0033] Preferably, when the vehicle is not in a driving state, it is determined whether it is in a parking power generation mode:

[0034] If yes, execute the first cooling and lubrication mode;

[0035] If no, proceed to the next step;

[0036] Determine whether it is in the parking state:

[0037] Yes, keep the first cooling and lubrication mode;

[0038] No, report an error.

[0039] According to a third aspect of an embodiment of the present invention, a terminal is provided, including:

[0040] one or more processors;

[0041] a memory for storing the one or more processor-executable instructions;

[0042] The one or more processors are configured to:

[0043] Execute the method described in the first aspect of the embodiment of the present invention.

[0044] According to a fourth aspect of the embodiments of the present application, a non-transitory computer readable storage medium is provided, which, when instructions in the storage medium are executed by a processor of a terminal, enables the terminal to perform the method according to the first aspect of the embodiments of the present application.

[0045] According to a fifth aspect of the embodiments of the present application, an application program product is provided, which, when the application program product is running on a terminal, enables the terminal to perform the method according to the first aspect of the embodiments of the present application.

[0046] The present application has the following beneficial effects compared with the prior art:

[0047] The present application aims to provide a hybrid motor-electric coupling box cooling and lubricating system, method and medium, which takes into account the influence of different characteristics of the motor and the gear transmission system on the performance of the assembly in the design, and in the daily operating environment of the vehicle, the lower the temperature of the motor, the better the performance and the higher the efficiency; while the gear box system has an optimal working temperature range, the main influencing factor of which is the characteristics of the oil product, and most of the existing products on the market have the best performance near 90 DEG C.

[0048] The scheme of first passing through two motors and then entering the gear box can realize preheating of the gear box by the motor when driving in a low temperature environment or driving under a small load, so as to quickly reach the optimal working oil temperature of the gear box and improve the system efficiency. In addition, mode 6 is specially designed, which can skip the heat exchange of the heat exchanger when the engine is independently driven in a low temperature environment, so as to quickly raise the oil temperature and quickly reach the optimal working oil temperature of the gear box, thereby improving the system efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is the overall structure diagram of the present application.

[0050] Figure 2 is the overall structure diagram of another embodiment of the present application.

[0051] Figure 3 is the overall structure diagram of another embodiment of the present application.

[0052] Figure 4 is the overall structure diagram of another embodiment of the present application.

[0053] Figure 5 is the overall structure diagram of another embodiment of the present application.

[0054] Figure 6 is the overall structure diagram of another embodiment of the present application.

[0055] Figure 7 is the overall structure diagram of another embodiment of the present application.

[0056] Among them, 1-control slide valve, 2-generator, 3-third one-way valve, 4-drive motor, 5-second one-way valve, 6-first one-way valve, 7-gearbox, 8-first oil pan, 9-second oil pan, 10-temperature sensor, 11-third oil pan, 12-electric pump, 13-heat exchanger. DETAILED DESCRIPTION

[0057] The following is based on the attached Figure 1-7 The present invention will be further described:

[0058] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0059] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] like Figure 1As shown, the first embodiment of the present application provides a hybrid mechanical and electrical coupling box cooling and lubricating system based on the prior art, which comprises a generator 2 connected to one end of a control slide valve 1, a drive motor 4, a gear box 7, the other end of the generator 2 connected to the gear box 7 and the control slide valve 1 through a first one-way valve 6, the other end of the drive motor 4 connected to the gear box 7 and the control slide valve 1 through a second one-way valve 5, the pipeline between the generator 2 and the first one-way valve 6 connected to the pipeline between the drive motor 4 and the control slide valve 1 through a third one-way valve 3, the other end of the gear box 7 connected to a first oil pan 8, one end of the control slide valve 1 connected to the pipeline between the generator 2 and the first one-way valve 6, the other end of the control slide valve 1 connected to one end of a heat exchanger 13 and a second oil pan 9 respectively, the other end of the heat exchanger 13 connected to one end of an electric pump 12, the other end of the electric pump 12 connected to a third oil pan 11, the pipeline between the other end of the control slide valve 1 and the heat exchanger 13 and the electric pump 12 connected to the pipeline between the control slide valve 1 and the heat exchanger 13 and the electric pump 12, and a temperature sensor 10 installed in the third oil pan 11.

[0062] The heat exchanger 13 can be communicated with the generator 2, the drive motor 4 and the gear box 7 through the control slide valve 1, the pipeline between the heat exchanger 13 and the electric pump 12 can be communicated with the gear box 7 through the control slide valve 1, and the second oil pan 9 can be communicated with the pipeline between the generator 2 and the first one-way valve 6 through the control slide valve 1.

[0063] The second embodiment of the present application provides a hybrid mechanical and electrical coupling box cooling and lubricating method based on the prior art, which is applied to the hybrid mechanical and electrical coupling box cooling and lubricating system of the first embodiment, and comprises the following steps.

[0064] It is judged whether the vehicle is in a driving state, and if yes, the next step is executed.

[0065] It is judged whether the engine is running, and if yes, the next step is executed.

[0066] It is judged whether it is in a pure electric drive + driving power generation mode:

[0067] Yes, the third cooling and lubricating mode is executed.

[0068] No, the next step is executed.

[0069] It is judged whether it is in an engine direct drive mode:

[0070] Yes, the fifth cooling and lubricating mode is executed.

[0071] No, the next step is executed.

[0072] It is judged whether it is in an engine direct drive + driving power generation mode:

[0073] Yes, the second cooling and lubricating mode is executed.

[0074] If no, proceed to the next step;

[0075] Determine whether it is in engine direct drive + low temperature environment mode:

[0076] If yes, execute the sixth cooling and lubrication mode;

[0077] If no, proceed to the next step;

[0078] Whether it is in BOOST mode:

[0079] If yes, execute the third cooling and lubrication mode;

[0080] No, report an error.

[0081] When the engine is not running, determine whether it is in pure electric driving state:

[0082] If yes, execute the fourth cooling and lubrication mode;

[0083] If no, proceed to the next step;

[0084] Determine whether it is in the braking energy recovery state:

[0085] If yes, execute the fourth cooling and lubrication mode;

[0086] No, report an error.

[0087] When the vehicle is not in driving state, determine whether it is in parking power generation mode:

[0088] If yes, execute the first cooling and lubrication mode;

[0089] If no, proceed to the next step;

[0090] Determine whether it is in the parking state:

[0091] Yes, keep the first cooling and lubrication mode;

[0092] No, report an error.

[0093] The following describes the working process in detail with 6 working examples:

[0094] The first cooling and lubrication mode is the generator-only cooling mode:

[0095] like Figure 2 As shown in the figure, when paired with a PHEV (HEVs also experience this condition, but for a shorter duration), the battery may become depleted if the vehicle is not used for an extended period. In this case, if there is no external charging device but sufficient fuel, a parking charging condition may occur. While the vehicle is not in operation, the engine drives the motor inside the electromechanical coupling box to generate electricity, which is then stored in the battery after passing through the inverter. During this process, only the generator system in the electromechanical coupling box is operating, so only the generator requires cooling.

[0096] In this mode, the electronic oil pump 12 draws oil from the oil sump 11, cools it through the heat exchanger 13, and then flows through the control slide valve 1 into the generator 2 for cooling. The generator outlet has three circuits: Path 1, a specially designed return oil path within the control slide valve 1, leads directly to the oil sump; Path 2, via the third check valve 3, enters the drive motor 4, then through the check valve 5 into the gearbox 7, and finally into the first oil sump 8; Path 3, via the second check valve 5, enters the gearbox 7, and finally into the first oil sump 8. Of these three paths, only Path 1 lacks a check valve, eliminating the need to overcome the check valve's opening force. Therefore, the oil flows along Path 1 to complete the circuit, minimizing flow resistance and reducing hydraulic losses.

[0097] The second cooling and lubrication mode is the generator cooling and then lubricating the reducer mode:

[0098] like Figure 3 As shown in the figure, when paired with a PHEV (this operating condition also occurs in HEVs, but for a shorter period of time), if the vehicle is not used for a long time, the battery may become depleted. In this case, if there is no external charging device but sufficient fuel, the vehicle can generate electricity while driving. The engine drives the vehicle while also driving the motor in the electromechanical coupling box to generate electricity. This electricity is then stored in the battery after passing through the inverter. This process involves the generator and gearbox in the electromechanical coupling box, requiring cooling of the generator and lubrication of the reduction gearbox.

[0099] In this mode, the electronic oil pump 12 draws oil from the oil pan 11, cools it through the heat exchanger 13, and then flows through the slide valve 1 to the generator 2 for cooling. Because the slide valve's separate return oil path is closed, the generator outlet now has two loops: Path 1, which flows through the third check valve 3, into the drive motor 4, then through the second check valve 5, into the gearbox 7, and finally into the first oil pan 8; Path 2, which flows through the second check valve 5, into the gearbox 7, and finally into the first oil pan 8. Path 2 is shorter and has lower hydraulic assist, so the oil will flow along Path 2 to complete the cycle.

[0100] The third cooling and lubrication mode is the mode where the generator and drive motor are cooled in parallel and then the reducer is lubricated:

[0101] like Figure 4 As shown in the figure, when a hybrid vehicle is driving at low and medium speeds, the drive motor primarily propels the vehicle forward, while the engine occasionally starts to generate electricity to maintain the battery SOC. This operating condition is most common in HEVs, but it also exists in PHEVs, but due to the larger battery capacity, the engine does not need to start up frequently to generate electricity.

[0102] In addition, when a large power output is needed in a short time, the generator can participate in driving, so it also needs to be cooled, which is also applicable to this mode.

[0103] In this mode, the electronic oil pump 12 extracts oil from the third oil pan 11, cools it through the heat exchanger 13, and then enters the drive motor 4 through the control spool valve 1 to complete cooling. Then, after passing through the second one-way valve 5, it enters the reduction gearbox 7 to complete lubrication. Through the control of the oil supply flow of the electric pump 12, on-demand distribution can be realized.

[0104] The fourth cooling and lubrication mode is the drive motor cooling and then lubricating the reduction gearbox mode:

[0105] As shown in Figure 5 When matching a PHEV vehicle (this condition will also occur in an HEV, but for a shorter duration), when driving at medium and low speeds and the battery is fully charged, a long-term pure electric driving condition will occur. At this time, the components that need to be cooled in the electromechanical coupling box are the drive motor, and then the related shaft tooth system of the reduction gearbox is lubricated.

[0106] In this mode, the electronic oil pump 12 extracts oil from the third oil pan 11, cools it through the heat exchanger 13, and then enters the drive motor 4 through the control spool valve 1 to complete cooling. Then, after passing through the second one-way valve 5, it enters the reduction gearbox 7 to complete lubrication. Through the control of the oil supply flow of the electric pump 12, on-demand distribution can be realized.

[0107] The fifth cooling and lubrication mode is the reduction gearbox lubrication alone 1 - through the radiator mode:

[0108] As shown in Figure 6 When the hybrid vehicle is driving at high speed and the battery is fully charged, the engine direct drive type is generally used. In this mode, only the shaft tooth system in the reduction gearbox in the electromechanical coupling box participates in work, so only the reduction gearbox needs to be lubricated.

[0109] In this mode, the electronic oil pump 12 extracts oil from the third oil pan 11, cools it through the heat exchanger 13, and then enters the drive motor 4 through the control spool valve 1 to complete cooling. Then, after passing through the second one-way valve 5, it enters the reduction gearbox 7 to complete lubrication. Through the control of the oil supply flow of the electric pump 12, on-demand distribution can be realized.

[0110] The sixth cooling and lubrication mode is the reduction gearbox lubrication alone 2 - without passing through the radiator mode:

[0111] As shown in Figure 7As shown in Figure 1, when a hybrid vehicle is traveling at high speed and the battery is fully charged, it generally uses direct engine drive. In this mode, only the gear train within the reduction gearbox is involved in the operation of the electromechanical coupling, so only the reduction gearbox needs to be lubricated.

[0112] However, if the vehicle is started directly into the engine direct drive mode when the ambient temperature is low, this mode can be entered. In this mode, the lubricating oil does not pass through the heat exchanger 13, avoiding the oil-water temperature exchange, thereby achieving a rapid increase in oil temperature, thereby reaching the optimal operating oil temperature of the gearbox as soon as possible and improving system efficiency.

[0113] In this mode, the electronic oil pump 12 draws oil from the third oil sump 11, and directly cools the oil through the control slide valve 1 into the reduction gearbox 7 without cooling it through the heat exchanger 13. By controlling the oil flow of the electric pump 12, on-demand distribution can be achieved.

[0114] If the engine is driven directly for a long time in an extremely cold environment, the oil temperature may be lower than the optimal operating oil temperature. In this case, you can also operate in this mode for a long time to increase the oil temperature as much as possible and approach the optimal working area.

[0115] A third embodiment of the present invention provides a terminal based on existing technologies. The terminal may be the terminal described in the above embodiments. The terminal may be a portable mobile terminal, such as a smartphone or tablet computer. The terminal may also be referred to as user equipment, portable terminal, or other similar terminology.

[0116] Typically, a terminal includes a processor and a memory.

[0117] The processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0118] The memory may include one or more computer-readable storage media, which may be tangible and non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more magnetic disk storage devices or flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory is used to store at least one instruction, which is executed by the processor to implement the hybrid motor coupling box cooling and lubrication method provided in this application.

[0119] In some embodiments, the terminal may further optionally include: a peripheral device interface 403 and at least one peripheral device. Specifically, the peripheral device includes: at least one of a radio frequency circuit, a touch screen, a camera, an audio circuit, a positioning component, and a power supply.

[0120] A fourth embodiment of the present invention provides a computer-readable storage medium based on the prior art, on which a computer program is stored. When the program is executed by a processor, a hybrid motor-electric coupling box cooling and lubrication method as provided in all the inventive embodiments of this application is implemented.

[0121] Any combination of one or more computer-readable media can be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: 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 or 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 thereof. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device.

[0122] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0123] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0124] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0125] A fifth embodiment of the present invention provides an application product based on the prior art, including one or more instructions, which can be executed by the processor of the above-mentioned device to implement the above-mentioned hybrid motor coupling box cooling and lubrication method.

[0126] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A hybrid motor coupling box cooling and lubrication system, characterized in that: The invention comprises a generator (2) having one end connected to one end of a control slide valve (1), a drive motor (4), and a gear box (7); the other end of the generator (2) is connected to a pipeline of the control slide valve (1) through a first one-way valve (6), the gear box (7), and the other end of the drive motor (4) is connected to a pipeline of the control slide valve (1) through a second one-way valve (5), the gear box (7), and the control slide valve (1); the pipeline between the generator (2) and the first one-way valve (6) and the pipeline between the drive motor (4) and the control slide valve (1) are connected through a third one-way valve (3); The other end of the gearbox (7) is connected to the first oil pan (8), one end of the control slide valve (1) is connected to the pipeline between the generator (2) and the first one-way valve (6), the other end of the control slide valve (1) is respectively connected to the heat exchanger (13) and one end of the second oil pan (9), the other end of the heat exchanger (13) is connected to one end of the electric pump (12), the other end of the electric pump (12) is connected to the third oil pan (11), and the other end of the control slide valve (1) is connected to the pipeline connecting the heat exchanger (13) and the electric pump (12).

2. A hybrid motor-electric coupling box cooling and lubrication system according to claim 1, characterized in that: A temperature sensor (10) is provided in the third oil pan (11).

3. A hybrid motor-electric coupling box cooling and lubrication system according to claim 2, characterized in that: The heat exchanger (13) can be respectively communicated with the generator (2), the drive motor (4) and the gear box (7) through the control slide valve (1); the pipeline connecting the heat exchanger (13) and the electric pump (12) can be communicated with the gear box (7) through the control slide valve (1); and the second oil pan (9) can be communicated with the pipeline between the generator (2) and the first one-way valve (6) through the control slide valve (1).

4. A cooling and lubricating method for a hybrid motor coupling box, characterized in that: A hybrid motor-electric coupling box cooling and lubrication system according to any one of claims 1 to 3, comprising: Determine whether the vehicle is in driving state, if so, proceed to the next step; Determine whether the engine is running, if so, proceed to the next step; Determine whether it is in pure electric drive + driving power generation mode: If yes, execute the third cooling and lubrication mode; If no, proceed to the next step; Determine whether it is in engine direct drive mode: If yes, execute the fifth cooling and lubrication mode; If no, proceed to the next step; Determine whether it is in engine direct drive + driving power generation mode: If yes, execute the second cooling and lubrication mode; If no, proceed to the next step; Determine whether it is in engine direct drive + low temperature environment mode: If yes, execute the sixth cooling and lubrication mode; If no, proceed to the next step; Whether it is in BOOST mode: If yes, execute the third cooling and lubrication mode; No, report an error.

5. A hybrid motor-electric coupling box cooling and lubrication method according to claim 4, characterized in that: When the engine is not running, determine whether it is in a pure electric driving state: If yes, execute the fourth cooling and lubrication mode; If no, proceed to the next step; Determine whether it is in the braking energy recovery state: If yes, execute the fourth cooling and lubrication mode; No, report an error.

6. A hybrid motor-electric coupling box cooling and lubrication method according to claim 5, characterized in that: When the vehicle is not in a driving state, determining whether it is in a parking power generation mode: If yes, execute the first cooling and lubrication mode; If no, proceed to the next step; Determine whether it is in the parking state: Yes, keep the first cooling and lubrication mode; No, report an error.

7. A terminal, characterized in that: include: one or more processors; a memory for storing the one or more processor-executable instructions; The one or more processors are configured to: Execute the cooling and lubrication method for a hybrid motor-electric coupling box as described in any one of claims 4 to 6.

8. A non-transitory computer-readable storage medium, characterized in that When the instructions in the storage medium are executed by the processor of the terminal, the terminal is enabled to execute the hybrid motor-electric coupling box cooling and lubrication method according to any one of claims 4 to 6.

9. An application product, which, when running on a terminal, enables the terminal to execute the hybrid motor-electric coupling box cooling and lubrication method according to any one of claims 4 to 6.

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