Cooling and lubricating system and vehicle

Abstract

The invention provides a cooling and lubricating system and a vehicle. The cooling and lubricating system comprises an oil tank, a coarse filter, an oil pump, a wax type thermostat, a heat exchanger, a fine filter, a power system and a controller. An inlet of the oil pump is connected with the oil tank through the coarse filter, and an outlet is connected with an input port of the wax thermostat. A first output port of the wax thermostat is connected with an inlet of the fine filter, and a second output port is connected with an inlet of the heat exchanger; the heat exchanger is used for cooling the lubricating oil; the outlet of the heat exchanger is connected with the inlet of the fine filter; an outlet of the fine filter is connected with the power system; the controller is electrically connected with the oil pump and used for controlling operation power of the oil pump. The wax thermostat is used for opening the first output port and closing the second output port when the temperature of the lubricating oil is smaller than the first temperature, or closing the first output port and opening the second output port when the temperature of the lubricating oil is larger than or equal to the first temperature. The heat exchange efficiency of the cooling and lubricating system of the hybrid vehicle can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lubrication and cooling for hybrid vehicles, and particularly to a cooling and lubrication system and a vehicle. Background Art

[0002] With the encouragement of national policies and the progress of technology, the penetration rate of new energy vehicles has been increasing in recent years, especially for hybrid models (including range-extended models), and the market stock has been increasing. The hybrid system technology also shows a diversified development, and the cooling and lubrication system is a very core part of the dual-motor hybrid system, which not only affects the performance of the motor, but in more serious cases, affects the reliability of the hybrid system.

[0003] The cooling and lubrication system of the dual-motor hybrid system is usually an extension of the single-motor or three-in-one electric drive cooling system, and generally includes structures such as a filter, an oil pump, an oil cooler, etc. and oil passages connecting various parts. The lubricating oil enters the stator and rotor of the motor and the tooth shaft spray ports through the oil passages to cool and lubricate the motor and the tooth shaft system.

[0004] However, for complex dual-motor systems and multi-tooth shaft systems, under different operating conditions, the cooling and lubrication flow rates required by the motor and the tooth shaft are dynamically changing. Without intelligent control, the existing oil-cooled cooling and lubrication system cannot make timely adjustments to the cooling and lubrication requirements of each component, resulting in problems such as motor overheating and derating, insufficient lubrication of the tooth shaft leading to a decrease in life, or redundant output of the oil pump causing unnecessary losses and low utilization rate of cooling and lubrication. Some may set too many unnecessary flow switch solenoid valves, increasing the design cost and having a low input-output ratio.

[0005] In addition, there are more impurities generated due to wear inside the dual-motor system than the single-motor system, and impurities are not friendly to the service life of the tooth shaft, bearings, and motor, especially the bearings. Most of the existing cooling and lubrication systems adopt a coarse filter solution and are set inside the hybrid system, which is not convenient for after-sales replacement. This solution can solve the impurity problem in short and medium mileage, but after long mileage, the coarse filter adsorbs too many impurities and the filtering effect decreases, so that the impurities enter core components such as bearings along the cooling lubricating oil passage, causing increased bearing wear and premature failure, which is also a top problem in the power system of the new energy vehicle after-sales market currently.

[0006] In summary, the heat exchange efficiency of the cooling and lubrication system of hybrid vehicles is low. Summary of the Invention

[0007] In view of this, embodiments of the present invention provide a cooling and lubrication system and a vehicle, which can improve the heat exchange efficiency of the cooling and lubrication system of hybrid vehicles.

[0008] In a first aspect, an embodiment of the present invention provides a cooling and lubrication system, which includes: an oil tank, a coarse filter, an oil pump, a wax thermostat, a heat exchanger, a fine filter, a power system, and a controller;

[0009] The inlet of the oil pump is connected to the oil tank through the coarse filter, and the outlet is connected to the input port of the wax thermostat;

[0010] The first output port of the wax thermostat is connected to the inlet of the fine filter, and the second output port is connected to the inlet of the heat exchanger; the heat exchanger is used to cool the lubricating oil;

[0011] The outlet of the heat exchanger is connected to the inlet of the fine filter; the outlet of the fine filter is connected to the power system;

[0012] The controller is electrically connected to the oil pump and is used to control the operating power of the oil pump;

[0013] The wax thermostat is used to open the first output port and close the second output port when the temperature of the lubricating oil is less than a first temperature, or to close the first output port and open the second output port when the temperature of the lubricating oil is greater than or equal to the first temperature.

[0014] Optionally, the power system includes: a throttle valve, a transmission system;

[0015] The throttle valve is arranged in front of the inlet of the transmission system and is used to increase the pressure of the lubricating oil flow entering the transmission system;

[0016] The transmission system includes a first spraying structure;

[0017] The first spraying structure is connected to the throttle valve and is used to spray lubricating oil to various components of the transmission system.

[0018] Optionally, the power system includes: a solenoid valve, a generator;

[0019] The generator includes a third spraying structure and a first temperature sensor;

[0020] The third spraying structure is connected to the outlet of the fine filter and is used to spray lubricating oil to multiple components of the generator;

[0021] The solenoid valve is arranged between the third spraying structure and the fine filter and is used to adjust the lubricating oil flow entering the generator;

[0022] The first temperature sensor is connected to the controller and is used to detect the temperature of the generator.

[0023] Optionally, when the generator is in an off state, the controller is configured to send a closing instruction to the solenoid valve to control the solenoid valve to close when the temperature of the generator is lower than a first set temperature.

[0024] Optionally, when the generator is in an on state, the controller is configured to obtain a first required fuel quantity of the generator according to the temperature of the generator and a first temperature matrix, and send a first flow rate adjustment instruction to the solenoid valve according to the first required fuel quantity, so that the solenoid valve adjusts the output flow rate of the third spraying structure to the first required fuel quantity according to the first flow rate adjustment instruction.

[0025] Optionally, the power system includes: a drive motor;

[0026] The drive motor includes a second spraying structure and a second temperature sensor;

[0027] The second spraying structure is connected to the outlet of the fine filter and is configured to spray the lubricating oil to multiple components of the drive motor;

[0028] The second temperature sensor is connected to the controller and is configured to detect the temperature of the drive motor.

[0029] Optionally, when the drive motor is in an on state, the controller is configured to obtain a second required fuel quantity of the drive motor according to the temperature of the drive motor and a second temperature matrix, and send a second flow rate adjustment instruction to the solenoid valve according to the second required fuel quantity, so that the solenoid valve adjusts the output flow rate of the second spraying structure to the second required fuel quantity according to the second flow rate adjustment instruction.

[0030] Optionally, the control unit is configured to determine the rotational speed of the oil pump according to the temperature of the generator, the temperature of the drive motor, and a system setting matrix table, and send a rotational speed adjustment instruction to the oil pump according to the rotational speed.

[0031] Optionally, the power system includes: a generator;

[0032] The generator includes a third spraying structure and a first temperature sensor;

[0033] The third spraying structure is connected to the outlet of the fine filter and is configured to spray the lubricating oil to multiple components of the generator;

[0034] The first temperature sensor is connected to the controller and is configured to detect the temperature of the generator.

[0035] On the other hand, an embodiment of the present invention provides a vehicle, including the above cooling and lubrication system.

[0036] In the technical solutions of the cooling and lubrication system and the vehicle provided by the embodiments of the present invention, the cooling and lubrication system includes: an oil tank, a coarse filter, an oil pump, a wax thermostat, a heat exchanger, a fine filter, a power system and a controller; the inlet of the oil pump is connected to the oil tank through the coarse filter, and the outlet is connected to the input port of the wax thermostat; the first output port of the wax thermostat is connected to the inlet of the fine filter, and the second output port is connected to the inlet of the heat exchanger; the heat exchanger is used to cool the lubricating oil; the outlet of the heat exchanger is connected to the inlet of the fine filter; the outlet of the fine filter is connected to the power system; the controller is electrically connected to the oil pump and is used to control the operating power of the oil pump; the wax thermostat is used to open the first output port and close the second output port when the temperature of the lubricating oil is less than the first temperature, or close the first output port and open the second output port when the temperature of the lubricating oil is greater than or equal to the first temperature. It can improve the heat exchange efficiency of the cooling and lubrication system of the hybrid vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 FIG. is a schematic diagram of a cooling and lubrication system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0041] It should be understood that the term " / and / " used herein is only a description of the associated relationship of the associated objects, indicating that there can be three relationships. For example, a and / or b can represent: a exists alone, a and b exist simultaneously, and b exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0042] Figure 1 FIG. is a schematic diagram of a cooling and lubrication system provided by an embodiment of the present invention, as Figure 1 shown, the cooling and lubrication system includes: an oil tank 10( Figure 1The entire fuel tank is not shown, only the oil sump of the fuel tank), the coarse filter 20, the oil pump 30, the wax thermostat 40, the heat exchanger 50, the fine filter 60, the power system A, and the controller 100 are shown.

[0043] The inlet of the oil pump 30 is connected to the fuel tank 10 through the coarse filter 21, and the outlet of the oil pump 30 is connected to the input port W of the wax thermostat 40.

[0044] The wax thermostat 40 includes an input port and two output ports.

[0045] The first output port Q1 of the wax thermostat 40 is connected to the inlet of the fine filter 60, and the second output port Q2 is connected to the inlet of the heat exchanger 50; the heat exchanger 50 is used to cool the lubricating oil.

[0046] The outlet of the heat exchanger 50 is connected to the inlet of the fine filter 60; the outlet of the fine filter 60 is connected to the power system.

[0047] Among them, the coarse filter 20 is arranged inside the hybrid system, and the fine filter 60 is arranged on the outer surface of the hybrid system housing.

[0048] In the embodiments of the present invention, the coarse filter 20 and the fine filter 60 are respectively arranged. The coarse filter 20 is arranged at the front end of the oil pump 30, which coarsely filters the lubricating oil and is arranged inside the hybrid system, and is not replaced during its entire life cycle; while the fine filter 60 is arranged at the rear ends of the wax thermostat 40 and the heat exchanger 50, which can effectively filter the impurities in the cooled lubricating oil, extend the system life, reduce the after-sales failure rate, and the fine filter 60 is arranged on the outer surface of the hybrid system housing. The fine filter 60 can refer to the engine oil filter and be replaced regularly according to mileage, which is convenient for after-sales maintenance.

[0049] The controller 100 is electrically connected to the oil pump 30 and is used to control the operating power of the oil pump 30.

[0050] The wax thermostat 40 is used to open the first output port Q1 and close the second output port Q2 when the temperature of the lubricating oil is less than the first temperature, or close the first output port Q1 and open the second output port Q2 when the temperature of the lubricating oil is greater than or equal to the first temperature.

[0051] The wax thermostat 40 is a device that controls the circulation of the cooling system by using the state change of paraffin at different temperatures. It relies on the change in the form of paraffin to drive the central rod, thereby regulating the opening and closing of the valve 41, so as to realize the conversion of the large and small cycles of the cooling system.

[0052] When the internal lubricating oil temperature of the system is set to be ≥T °C, the paraffin wax inside the wax thermostat 40 starts to expand, pushing the central rod to control the opening and closing of the valve 41. When the dual-motor hybrid system starts to work initially, the internal lubricating oil temperature of the system is <T °C and the internal lubricating oil temperature is still very low. At this time, the lubricating oil directly enters the fine filter 60 without passing through the heat exchanger 50, thus realizing the switching of the low-temperature oil circuit and achieving the function of quickly raising the oil temperature, improving the system efficiency. At this time, the oil pump 30 works to suck oil, which is filtered by the coarse filter 20. The lubricating oil enters from the input port W of the wax thermostat 40 and is output from the first output port Q1, directly entering the fine filter 60 to finely filter the lubricating oil. After fine filtering, the lubricating oil is sent to the power system to implement effective cooling and lubrication. After the dual-motor hybrid system works for a period of time, the internal lubricating oil temperature of the system is ≥T °C, and it is necessary to cool down the lubricating oil to effectively cool the internal parts. Therefore, the paraffin wax inside the wax thermostat 40 starts to expand, pushing the central rod to control the valve 41 to close the first output port Q1 of the wax thermostat 40, and the second output port Q2 of the wax thermostat 40 is opened. At this time, the oil pump 30 works to suck oil, which is filtered by the coarse filter 20. The lubricating oil enters from the input port W of the wax thermostat 40 and is output from the second output port Q2. Then, the heat exchanger 50 cools down the lubricating oil. The cooled lubricating oil enters the fine filter 60 for fine filtering. After fine filtering, the lubricating oil is sent to the power system to implement effective cooling and lubrication. Through this invention, the heat exchange efficiency of the cooling and lubrication system of the hybrid vehicle can be effectively improved, and the cost is low, and the quality is stable and reliable.

[0053] When the whole vehicle is just cold-started, the temperature of the system lubricating oil is low. By setting the operating temperature of the wax thermostat 40 to T, when the internal lubricating oil temperature of the system is <T, at this time, it directly enters the fine filter 60 without passing through the heat exchanger 50, thus realizing the switching of the low-temperature oil circuit and achieving the function of quickly raising the oil temperature, improving the system efficiency. When the internal lubricating oil temperature of the system is ≥T, the paraffin wax inside the wax thermostat 40 starts to expand, pushing the central rod to control the valve 41 to close the first output port Q1 of the wax thermostat 40, and the second output port Q2 of the wax thermostat 40 is opened. At this time, the oil pump 30 works to suck oil, which is filtered by the coarse filter 20. The lubricating oil enters from the input port W of the wax thermostat 40 and is output from the second output port Q2. Then, the heat exchanger 50 cools down the lubricating oil. The cooled lubricating oil enters the fine filter 60 for fine filtering. After fine filtering, the lubricating oil is sent to the power system to implement effective cooling and lubrication, which can effectively improve the heat exchange efficiency of the system.

[0054] As Figure 1 shown, the power system A includes: a throttle valve 70 and a transmission system 80.

[0055] The throttle valve 70 is arranged in front of the inlet of the transmission system 80 and is used to increase the pressure of the lubricating oil flow entering the transmission system 80.

[0056] The transmission system 80 includes a first spraying structure 81.

[0057] The first spraying structure 81 is connected to the throttle valve 70 and is used to spray lubricating oil onto various components of the transmission system 80.

[0058] In the embodiment of the present invention, since the transmission system 80 is provided with the first spraying structure 81, and since there are many components in the transmission system 80 that need to be lubricated, a throttle valve 70 is provided at the front end of the oil circuit to increase the flow pressure, thereby achieving a faster flow rate and more rapid cooling and lubrication of each component.

[0059] As Figure 1 shown, the power system A includes: a drive motor 90.

[0060] The drive motor 90 includes a second spraying structure 91 and a second temperature sensor 92.

[0061] The second spraying structure 91 is connected to the outlet of the fine filter 60 and is used to spray lubricating oil onto multiple components of the drive motor 90.

[0062] The second temperature sensor 92 is connected to the controller 100 and is used to detect the temperature of the drive motor 90.

[0063] In some possible embodiments, as Figure 1 shown, the power system A includes: a solenoid valve 110 and a generator 120.

[0064] For example, the solenoid valve 110 can be a P1 flow switch solenoid valve.

[0065] The generator 120 includes a third spraying structure 121 and a first temperature sensor 122.

[0066] The third spraying structure 121 is connected to the outlet of the fine filter 60 and is used to spray lubricating oil onto multiple components of the generator 120.

[0067] The solenoid valve 100 is provided between the third spraying structure 121 and the fine filter 60 and is used to adjust the lubricating oil flow rate entering the generator 120 to improve the cooling and lubrication utilization efficiency.

[0068] The first temperature sensor 122 is connected to the controller 100 and is used to detect the temperature of the generator 120.

[0069] Among them, components such as fuel tank 10, coarse filter 20, oil pump 30, wax thermostat 40, heat exchanger 50, fine filter 60, throttle valve 70, drive system 80, drive motor 90, controller 100, solenoid valve 110, and generator 120 are connected together through the housing oil passage; at the same time, the oil pump 30, second temperature sensor 92, first temperature sensor 122, and solenoid valve 110 are all connected to the controller 100 through a low-voltage wire harness to operate the controller 100.

[0070] Figure 1 The shown system structure is particularly suitable for the drive motor 90 to be a permanent magnet synchronous motor and serve as the main drive in the power system. If the drive motor 90 is a three-phase asynchronous motor and serves as the auxiliary drive in the power system, the solenoid valve 110 can be removed according to needs to achieve a high benefit ratio (the auxiliary drive is generally used for rapid acceleration and deceleration in the power system, and the usage time accounts for a relatively small proportion).

[0071] In some possible embodiments, the power system includes: a generator, excluding the solenoid valve. The generator includes a third spraying structure and a first temperature sensor; the third spraying structure is connected to the outlet of the fine filter and is used to spray lubricating oil on multiple components of the generator; the first temperature sensor is connected to the controller and is used to detect the temperature of the generator.

[0072] In power system A, the throttle valve 70, drive system 80, and drive motor 90, and generator 120 can exist simultaneously, or one of them or any combination of two of them can exist.

[0073] The controller 100 is used to determine the rotation speed of the oil pump 30 according to the temperature of the generator 120, the temperature of the drive motor 90, and the system setting matrix table, and send a rotation speed adjustment command to the oil pump 30 according to the rotation speed, so as to adjust the operating power of the oil pump 30.

[0074] Exemplarily, the system setting matrix table includes the corresponding relationship between the temperature of the generator 120, the temperature of the drive motor 90, and the rotation speed of the oil pump 30. The controller 100 obtains the temperature of the generator 120 and the temperature of the drive motor 90, and determines the rotation speed of the oil pump according to the corresponding relationship between the temperature and the rotation speed in the system setting matrix table.

[0075] The controller 100 is also used to, when the generator 120 is in an unoperated state and the temperature of the generator 120 is less than the first set temperature, send a closing command to the solenoid valve 110 to control the solenoid valve 110 to close, so that more system flow leads to the drive motor 90, improving the system lubrication efficiency and motor efficiency.

[0076] The controller 100 is further configured to, when the generator 120 is in the working state, obtain the first required oil quantity of the generator 120 according to the temperature of the generator 120 and the first temperature matrix, and send a first flow regulation command to the solenoid valve 110 according to the first required oil quantity, so that the solenoid valve 110 adjusts the output flow rate of the third spraying structure 121 to the first required oil quantity according to the first flow regulation command, thereby regulating the size of the lubricating oil flow rate entering the third spraying structure 121 of the generator 120.

[0077] Exemplarily, the first temperature data matrix contains temperature ranges, and one temperature range corresponds to one motor lubricating oil quantity (when the motor thermal management calibration and development were carried out in the early stage, one temperature range corresponded to the lubricating oil quantity required by one motor). The controller 100 collects the temperature in real time. For example, the oil quantity corresponding to the temperature range of 25 - 65 °C is P1, and the oil quantity corresponding to the temperature range of 65 - 90 °C is P2.

[0078] The controller 100 is further configured to, when the drive motor 90 is in the working state, obtain the second required oil quantity of the drive motor 90 according to the temperature of the drive motor 90 and the second temperature matrix, and send a second flow regulation command to the solenoid valve 110 according to the second required oil quantity, so that the solenoid valve 110 adjusts the output flow rate of the second spraying structure 91 to the second required oil quantity according to the second flow regulation command, thereby regulating the size of the lubricating oil flow rate entering the second spraying structure 91 of the drive motor 90.

[0079] Exemplarily, the second temperature data matrix contains temperature ranges, and one temperature range corresponds to one motor lubricating oil quantity (when the motor thermal management calibration and development were carried out in the early stage, one temperature range corresponded to the lubricating oil quantity required by one motor). The controller 100 collects the temperature in real time. For example, the oil quantity corresponding to the temperature range of 25 - 65 °C is P3, and the oil quantity corresponding to the temperature range of 65 - 90 °C is P4.

[0080] The control strategy of the above controller 100 is continuous and is updated and adjusted in real time through the algorithm and computing power of the controller 100.

[0081] An embodiment of the present invention provides an intelligent cooling and lubrication system for a dual-motor hybrid architecture. By setting core components such as a wax thermostat, a solenoid valve, and a throttle valve, not only can the system integration be improved, but also the lubrication flow rate of core components such as motors can be dynamically adjusted, thereby achieving efficient cooling of the motors, improving motor efficiency, and ensuring the stability of motor operation. A coarse filter and a fine filter are respectively provided. The coarse filter is arranged at the front end of the oil pump, which coarsely filters the lubricating oil and is arranged inside the hybrid system without being replaced during its entire life cycle. The fine filter is arranged at the rear end of the wax thermostat and the heat exchanger, which can effectively filter impurities in the lubricating oil, extend the life of the assembly, and is arranged on the outer surface of the hybrid system housing, facilitating after-sales maintenance, effectively reducing after-sales failure rate and user maintenance cost. Through the algorithm and computing power of the controller, the required lubricating oil flow rate of each component of the system can be dynamically adjusted in real time, and at the same time, according to the system flow rate demand, the operating power of the oil pump can be controlled in real time to achieve efficient cooling, precise control, energy saving and cost reduction.

[0082] In the technical solution of a cooling and lubrication system provided by an embodiment of the present invention, the cooling and lubrication system includes: an oil tank, a coarse filter, an oil pump, a wax thermostat, a heat exchanger, a fine filter, a power system, and a controller; the inlet of the oil pump is connected to the oil tank through the coarse filter, and the outlet is connected to the input port of the wax thermostat; the first output port of the wax thermostat is connected to the inlet of the fine filter, and the second output port is connected to the inlet of the heat exchanger; the heat exchanger is used for cooling the lubricating oil; the outlet of the heat exchanger is connected to the inlet of the fine filter; the outlet of the fine filter is connected to the power system; the controller is electrically connected to the oil pump for controlling the operating power of the oil pump; the wax thermostat is used to open the first output port and close the second output port when the temperature of the lubricating oil is less than the first temperature, or close the first output port and open the second output port when the temperature of the lubricating oil is greater than or equal to the first temperature. It can improve the heat exchange efficiency of the cooling and lubrication system of hybrid vehicles.

[0083] An embodiment of the present application also provides a cooling and lubrication control method, which may include the following steps:

[0084] S201: Determine the rotation speed of the oil pump according to the temperature of the generator, the temperature of the drive motor, and the system setting matrix table, and send a rotation speed adjustment command to the oil pump according to the rotation speed;

[0085] S202: When the generator is in an idle state, when the temperature of the generator is less than the first set temperature, send a closing command to the solenoid valve to control the solenoid valve to close; or

[0086] S203: When the generator is in the working state, obtain the first required fuel quantity of the generator according to the temperature of the generator and the first temperature matrix, and send a first flow rate adjustment command to the solenoid valve according to the first required fuel quantity, so that the solenoid valve adjusts the output flow rate of the third spraying structure to the first required fuel quantity according to the first flow rate adjustment command; or

[0087] S204: When the drive motor is in the working state, obtain the second required fuel quantity of the drive motor according to the temperature of the drive motor and the second temperature matrix, and send a second flow rate adjustment command to the solenoid valve according to the second required fuel quantity, so that the solenoid valve adjusts the output flow rate of the second spraying structure to the second required fuel quantity according to the second flow rate adjustment command.

[0088] The embodiment of the present application also provides a cooling and lubrication control device, which may include: a processor and a memory. The memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, it implements the cooling and lubrication control method provided in the above embodiments of the present application.

[0089] The embodiment of the present application also provides a vehicle, including the above cooling and lubrication system.

[0090] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0091] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0092] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0093] In addition, in each embodiment of the present application, each functional unit may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0094] The above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer-readable storage medium. The above-mentioned software functional unit stored in a storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0095] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

[0096] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. A cooling and lubrication system, characterized in that, The described cooling and lubrication system includes: an oil tank, a coarse filter, an oil pump, a wax thermostat, a heat exchanger, a fine filter, a power system, and a controller; The inlet of the oil pump is connected to the oil tank through the coarse filter, and the outlet is connected to the input port of the wax thermostat; The first output port of the wax thermostat is connected to the inlet of the fine filter, and the second output port is connected to the inlet of the heat exchanger; the heat exchanger is used to cool the lubricating oil; The outlet of the heat exchanger is connected to the inlet of the fine filter; the outlet of the fine filter is connected to the power system; The controller is electrically connected to the oil pump and is used to control the operating power of the oil pump; The wax thermostat is used to open the first output port and close the second output port when the temperature of the lubricating oil is less than the first temperature, or to close the first output port and open the second output port when the temperature of the lubricating oil is greater than or equal to the first temperature.

2. The cooling and lubrication system according to claim 1, characterized in that, The power system includes: a throttle valve, a transmission system; The throttle valve is arranged in front of the inlet of the transmission system and is used to increase the pressure of the lubricating oil flow entering the transmission system; The transmission system includes a first spraying structure; The first spraying structure is connected to the throttle valve and is used to spray lubricating oil to each component of the transmission system.

3. The cooling lubrication system according to claim 1 or 2, characterized in that, The power system includes: a solenoid valve, a generator; The generator includes a third spraying structure and a first temperature sensor; The third spraying structure is connected to the outlet of the fine filter and is used to spray lubricating oil to multiple components of the generator; The solenoid valve is arranged between the third spraying structure and the fine filter and is used to adjust the lubricating oil flow entering the generator; The first temperature sensor is connected to the controller and is used to detect the temperature of the generator.

4. The cooling lubrication system according to claim 3, characterized in that, When the generator is in the non-operating state, the controller is used to send a closing instruction to the solenoid valve to control the solenoid valve to close when the temperature of the generator is less than the first set temperature.

5. The cooling and lubrication system according to claim 3, characterized in that, When the generator is in the operating state, the controller is used to obtain the first required oil quantity of the generator according to the temperature of the generator and the first temperature matrix, and send a first flow regulation instruction to the solenoid valve according to the first required oil quantity, so that the solenoid valve adjusts the output flow of the third spraying structure to the first required oil quantity according to the first flow regulation instruction.

6. The cooling and lubrication system according to claim 1, 2, 4 or 5, characterized in that, The power system includes: a drive motor; The drive motor includes a second spraying structure, a second temperature sensor; The second spraying structure is connected to the outlet of the fine filter and is used to spray the lubricating oil to multiple components of the drive motor; The second temperature sensor is connected to the controller and is used to detect the temperature of the drive motor.

7. The cooling and lubrication system according to claim 6, characterized in that, When the drive motor is in the operating state, the controller is used to obtain the second required oil quantity of the drive motor according to the temperature of the drive motor and the second temperature matrix, and send a second flow regulation instruction to the solenoid valve according to the second required oil quantity, so that the solenoid valve adjusts the output flow of the second spraying structure to the second required oil quantity according to the second flow regulation instruction.

8. The cooling and lubrication system according to claim 6, characterized in that, The control unit is configured to determine the rotational speed of the oil pump according to the temperature of the generator, the temperature of the drive motor, and the system setting matrix table, and send a rotational speed adjustment command to the oil pump according to the rotational speed.

9. The cooling and lubrication system according to claim 1, characterized in that The power system includes: a generator; The generator includes a third spraying structure and a first temperature sensor; The third spraying structure is connected to the outlet of the fine filter and is configured to spray lubricating oil onto multiple components of the generator; The first temperature sensor is connected to the controller and is configured to detect the temperature of the generator.

10. A vehicle, characterized in that, The vehicle includes the cooling and lubrication system according to any one of claims 1-9.

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