Vehicle, hybrid engine cooling system and control method thereof

Abstract

The present invention discloses a vehicle, a hybrid engine cooling system and a control method thereof. The hybrid engine cooling system includes: a cooler, a water pump, a heater, a liquid generator, a power module, a cooling module and a control module; the liquid generator is used to generate electricity by passing the coolant through the liquid generator, and the generated electric energy is stored in the power module; the control module is used to control the cooling module to be turned off when the temperature of the coolant is lower than a first preset temperature, and to control the heater to be powered on at the same time; and is also used to control the cooling module to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature, so that the coolant flows through the cooling module. The present invention can increase the heating rate of the engine when the coolant temperature is low, and can also increase the cooling rate of the engine when the coolant temperature is high. It can also convert the mechanical energy of the coolant flow into electrical energy, and store the converted electrical energy in the power module, thereby improving energy utilization.

Description

Technical Field

[0001] The present invention relates to the field of engine technology, and in particular to a vehicle, a hybrid engine cooling system and a control method thereof. Background Art

[0002] Hybrid engines are currently a major research focus across the automotive industry, and have become the mainstream powertrain system for many automakers. Thermal efficiency, a key technical indicator of hybrid engines, often determines fuel economy. Improving energy utilization within the engine cooling system is a key technical challenge in this effort. Summary of the Invention

[0003] The present invention provides a vehicle, a hybrid engine cooling system, and a control method thereof, which can increase the engine's heating rate when the coolant temperature is low, and can also increase the engine's cooling rate when the coolant temperature is high. It can also convert the mechanical flow of the coolant into electrical energy and store the converted electrical energy in a power module to improve energy utilization.

[0004] According to another aspect of the present invention, a hybrid engine cooling system is provided, the hybrid engine cooling system comprising: a cooler, a water pump, a heater, a liquid generator, a power module, a temperature reduction module and a control module;

[0005] The cooler, the water pump and the engine are connected in a closed loop in sequence;

[0006] The cooling module, the water pump and the engine are connected in a closed loop in sequence;

[0007] The heater is located on one side of the cooler, and is used to heat the coolant and lubricating oil in the cooler when powered on;

[0008] The cooling module is used to reduce the temperature of the coolant;

[0009] The liquid inlet of the liquid generator is connected to the engine, the liquid outlet of the liquid generator is connected to the water pump, and the power transmission end of the liquid generator is connected to the power module. The liquid generator is used to generate electricity by the coolant flowing through the liquid generator and store the generated electricity in the power module;

[0010] The power module is electrically connected to the water pump and the heater;

[0011] The control module is connected to the cooling module. The control module is used to control the cooling module to turn off when the temperature of the coolant is lower than a first preset temperature, and at the same time control the heater to be powered on; and is also used to control the cooling module to turn on when the temperature of the coolant is greater than or equal to the first preset temperature, so that the coolant flows through the cooling module.

[0012] Optionally, the power module includes a power supply unit and an electric control switch; a first end of the electric control switch is electrically connected to an output end of the power supply unit, a second end of the electric control switch is electrically connected to the heater, a third end of the electric control switch is electrically connected to the water pump, and a control end of the electric control switch is electrically connected to the control module;

[0013] The input end of the power supply unit is electrically connected to the power transmission end of the liquid generator;

[0014] The control module is further used to control the conduction state of the electronically controlled switch;

[0015] When the first end of the electric control switch is connected to the second end thereof, the power supply unit is used to supply power to the heater; when the first end of the electric control switch is connected to the third end thereof, the power supply unit is used to supply power to the water pump.

[0016] Optionally, the control module is used to control the cooling module to be turned off when the temperature of the coolant is lower than a first preset temperature, and at the same time control the first end of the electric-controlled switch and its second end to be connected, and control the first end of the electric-controlled switch and its third end to be closed; it is also used to control the cooling module to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, and at the same time control the first end of the electric-controlled switch and its second end to be closed, and control the first end of the electric-controlled switch and its third end to be closed; it is also used to control the cooling module to be turned on when the temperature of the coolant is greater than or equal to the second preset temperature, and at the same time control the first end of the electric-controlled switch and its third end to be connected, and control the first end of the electric-controlled switch and its second end to be closed.

[0017] Optionally, the power supply unit includes a first transformer, an energy storage battery and a second transformer;

[0018] The first end of the first transformer is electrically connected to the power transmission end of the liquid generator, and the second end of the first transformer is electrically connected to the first end of the energy storage battery;

[0019] The second end of the energy storage battery is electrically connected to the first end of the second transformer;

[0020] The second end of the second transformer is electrically connected to the first end of the electronically controlled switch.

[0021] Optionally, the cooling module includes an electronically controlled thermostat and a radiator;

[0022] The electronically controlled thermostat, the radiator, the water pump and the engine are sequentially connected in a closed loop;

[0023] The control module is electrically connected to the electronic thermostat. The control module is used to control the electronic thermostat to be turned off when the temperature of the coolant is lower than a first preset temperature; and is also used to control the electronic thermostat to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature.

[0024] Optionally, the cooling module further includes a fan;

[0025] The fan is located at one side of the radiator and is used to reduce the temperature of the coolant in the radiator.

[0026] Optionally, the first preset temperature range includes 90° C. to 95° C.;

[0027] The second preset temperature range includes 100°C to 105°C.

[0028] According to another aspect of the present invention, a control method for a hybrid engine cooling system is provided, wherein the hybrid engine cooling system includes a cooler, a water pump, a heater, a liquid generator, a power module, a cooling module and a control module; the cooler, the water pump and the engine are connected in a closed loop in sequence; the cooling module, the water pump and the engine are connected in a closed loop in sequence; the heater is located on one side of the cooler, and when powered on, the heater heats the coolant and lubricating oil in the cooler; the cooling module reduces the temperature of the coolant; the liquid inlet of the liquid generator is connected to the engine, the liquid outlet of the liquid generator is connected to the water pump, the power transmission end of the liquid generator is connected to the power module, the liquid generator generates electricity by the coolant flowing through the liquid generator, and stores the generated electrical energy in the power module; the power module is electrically connected to the water pump and the heater; the control module is connected to the cooling module;

[0029] The control method includes:

[0030] When the temperature of the coolant is lower than a first preset temperature, the cooling module is controlled to be closed, and the heater is controlled to be powered on; when the temperature of the coolant is greater than or equal to the first preset temperature, the cooling module is controlled to be turned on, so that the coolant flows through the cooling module.

[0031] Optionally, the power supply module includes a power supply unit and an electric control switch; a first end of the electric control switch is electrically connected to an output end of the power supply unit, a second end of the electric control switch is electrically connected to the heater, a third end of the electric control switch is electrically connected to the water pump, and a control end of the electric control switch is electrically connected to the control module; an input end of the power supply unit is electrically connected to a power transmission end of the liquid generator; the control module controls a conduction state of the electric control switch; when the first end of the electric control switch is conductively connected to its second end, the power supply unit supplies power to the heater; when the first end of the electric control switch is conductively connected to its third end, the power supply unit supplies power to the water pump;

[0032] The controlling the cooling module to be turned off when the temperature of the coolant is lower than the first preset temperature and the controlling the heater to be powered on specifically include:

[0033] When the temperature of the coolant is lower than a first preset temperature, the cooling module is controlled to be turned off, and the first end of the electric control switch and the second end thereof are controlled to be conductive, and the first end of the electric control switch and the third end thereof are controlled to be closed;

[0034] When the temperature of the coolant is greater than or equal to the first preset temperature, controlling the cooling module to turn on so that the coolant flows through the cooling module specifically includes:

[0035] When the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the second end are controlled to be closed, and the first end of the electronically controlled switch and the third end are controlled to be closed; when the temperature of the coolant is greater than or equal to the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the third end are controlled to be turned on, and the first end of the electronically controlled switch and the second end are controlled to be closed.

[0036] According to another aspect of the present invention, a vehicle is provided. The vehicle includes the hybrid engine cooling system provided by any embodiment of the present invention.

[0037] This embodiment provides a hybrid engine cooling system, in which the cooler, water pump and engine are connected in a closed loop in sequence, and the cooling module, water pump and engine are connected in a closed loop in sequence. The cooling system also includes a heater, a liquid generator and a power module. The heater is located on one side of the cooler. The liquid generator is connected between the water pump and the engine, and the transmission end of the liquid generator is connected to the power module. The liquid generator can convert the mechanical energy of the coolant passing through it into electrical energy and store the converted electrical energy in the power module so that the power module can power the heater and water pump, thereby improving energy utilization. The control module can control the heater to heat the coolant in the cooler when the temperature of the coolant is lower than a first preset temperature, thereby improving the cold start efficiency of the engine. The control module can also control the cooling module to turn on when the temperature of the coolant is greater than or equal to the first preset temperature, so as to reduce the temperature of the coolant and thus reduce the temperature of the engine. In summary, the hybrid engine cooling system provided in this embodiment can increase the engine's heating rate when the coolant temperature is low, and can also increase the engine's cooling rate when the coolant temperature is high. It can also convert the mechanical flow of the coolant into electrical energy and store the converted electrical energy in the power module to improve energy utilization.

[0038] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 is a structural schematic diagram of a hybrid engine cooling system provided according to an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of a path through which the coolant flows when the cooling module is turned off;

[0042] Figure 3 A schematic diagram of a path through which the coolant flows when the cooling module is turned on;

[0043] Figure 4 is a structural schematic diagram of another hybrid engine cooling system provided according to an embodiment of the present invention;

[0044] Figure 5is a structural schematic diagram of another hybrid engine cooling system provided according to an embodiment of the present invention;

[0045] Figure 6 is a structural schematic diagram of another hybrid engine cooling system provided according to an embodiment of the present invention;

[0046] Figure 7 4 is a flow chart of a method for controlling a hybrid engine cooling system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0048] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] Figure 1 is a schematic structural diagram of a hybrid engine cooling system provided according to an embodiment of the present invention, with reference to Figure 1The hybrid engine cooling system provided in this embodiment includes: a cooler 10, a water pump 20, a heater 30, a liquid generator 40, a power module 50, a cooling module 60 and a control module 70; the cooler 10, the water pump 20 and the engine 80 are connected in a closed loop in sequence; the cooling module 60, the water pump 20 and the engine 80 are connected in a closed loop in sequence; the heater 30 is located on one side of the cooler 10, and the heater 30 is used to heat the coolant and lubricating oil in the cooler 10 when powered on; the cooling module 60 is used to reduce the temperature of the coolant; the liquid inlet of the liquid generator 40 is connected to the engine 80, and the outlet of the liquid generator 40 is connected to the engine 80. The liquid inlet is connected to the water pump 20, and the transmission end of the liquid generator 40 is connected to the power module 50. The liquid generator 40 is used to generate electricity by the coolant flowing through the liquid generator 40, and store the generated electrical energy in the power module 50; the power module 50 is electrically connected to the water pump 20 and the heater 30; the control module 70 is connected to the cooling module 60, and the control module 70 is used to control the cooling module 60 to turn off when the temperature of the coolant is lower than the first preset temperature, and at the same time control the heater 30 to be powered on. When the temperature of the coolant is greater than or equal to the first preset temperature, the cooling module 60 is controlled to turn on, so that the coolant flows through the cooling module 60.

[0050] Specifically, the cooler 10, the water pump 20 and the engine 80 are sequentially connected through a closed-loop pipeline, and the cooling module 60, the water pump 20 and the engine 80 are also sequentially connected through a closed-loop pipeline. The water pump 20 can drive the coolant to flow in the pipeline.

[0051] The liquid generator 40 can convert the mechanical energy of the flowing coolant into electrical energy and store the generated electrical energy in the power module 50. When the temperature of the coolant is lower than the first preset temperature, it means that the engine 80 is in a cold start and warm-up state. At this time, the cooling module 60 is not needed to reduce the temperature of the coolant, so the control module 70 controls the cooling module 60 to be turned off. Figure 2 , Figure 2 This is a schematic diagram of the path that the coolant flows through when the cooling module is turned off. Figure 2 The thick dotted line in the figure is the path that the coolant does not pass through. Figure 2 As can be seen in the figure, when cooling module 60 is off, the coolant does not pass through cooling module 60. The coolant in cooler 10 flows through water pump 20 and engine 80. Part of the coolant flowing out of engine 80 returns to cooler 10, and part flows through liquid generator 40. When the coolant temperature is lower than the first preset temperature, in order to quickly warm up the engine, control module 70 controls heater 30 to energize, so that heater 30 heats the coolant and lubricating oil in cooler 10, achieving rapid temperature increase of engine 80, reducing warm-up time, and lowering fuel consumption and hydrocarbon emissions of engine 80.

[0052] When the temperature of the coolant is greater than or equal to the first preset temperature, it indicates that the temperature of the engine 80 is high and the temperature of the engine 80 needs to be lowered by lowering the temperature of the coolant. Figure 3 , Figure 3 This is a schematic diagram of the path that the coolant flows through when the cooling module is turned on. Figure 3 As can be seen in the figure, when the cooling module 60 is turned on, the coolant flows through the water pump 20 and the engine 80. A portion of the coolant flowing out of the engine 80 returns to the cooling module 60, and a portion flows through the liquid generator 40. The cooling module 60 can reduce the temperature of the coolant flowing through it, thereby quickly reducing the temperature of the engine 80 and improving the heat dissipation performance of the engine 80.

[0053] The water pump 20 in this embodiment can be an electric water pump. The water pump 20 and heater 30 in this embodiment can be powered by other power sources or by the power module 50 provided in this embodiment. When the heater 30 is powered solely by the power module 50 provided in this embodiment, without requiring any other power source, the cooling system provided in this embodiment can reduce the energy consumed by the heater 30 and improve energy utilization. When the water pump 20 is powered simultaneously by both another power source and the power module 50 provided in this embodiment, the power of the water pump 20 can be increased, thereby improving the cooling rate of the engine 80.

[0054] It should be noted that Figure 1 The thin dotted lines with arrows in the figure represent the connection relationship between electronic components. Figure 1 The thick solid lines with arrows in the figure indicate the paths through which coolant can flow.

[0055] This embodiment provides a hybrid engine cooling system, in which the cooler, water pump and engine are connected in a closed loop in sequence, and the cooling module, water pump and engine are connected in a closed loop in sequence. The cooling system also includes a heater, a liquid generator and a power module. The heater is located on one side of the cooler. The liquid generator is connected between the water pump and the engine, and the transmission end of the liquid generator is connected to the power module. The liquid generator can convert the mechanical energy of the coolant passing through it into electrical energy and store the converted electrical energy in the power module so that the power module can power the heater and water pump, thereby improving energy utilization. The control module can control the heater to heat the coolant in the cooler when the temperature of the coolant is lower than a first preset temperature, thereby improving the cold start efficiency of the engine. The control module can also control the cooling module to turn on when the temperature of the coolant is greater than or equal to the first preset temperature, so as to reduce the temperature of the coolant and thus reduce the temperature of the engine. In summary, the hybrid engine cooling system provided in this embodiment can increase the engine's heating rate when the coolant temperature is low, and can also increase the engine's cooling rate when the coolant temperature is high. It can also convert the mechanical flow of the coolant into electrical energy and store the converted electrical energy in the power module to improve energy utilization.

[0056] Optional, Figure 4 is a structural diagram of another hybrid engine cooling system provided according to an embodiment of the present invention, with reference to Figure 4 The power module 50 includes a power supply unit 51 and an electric control switch 52; the first end of the electric control switch 52 is electrically connected to the output end of the power supply unit 51, the second end of the electric control switch 52 is electrically connected to the heater 30, the third end of the electric control switch 52 is electrically connected to the water pump 20, and the control end of the electric control switch 52 is electrically connected to the control module 70; the input end of the power supply unit 51 is electrically connected to the power transmission end of the liquid generator 40; the control module 70 is also used to control the conduction state of the electric control switch 52; when the first end of the electric control switch 90 is connected to the second end thereof, the power supply unit 51 is used to supply power to the heater 30; when the first end of the electric control switch 90 is connected to the third end thereof, the power supply unit 51 is used to supply power to the water pump 20.

[0057] Specifically, the power supply unit 51 is used to store the electrical energy generated by the liquid generator 40. The control module 70 can control the conduction state of the electronically controlled switch 52. Specifically, the control module 70 can control the first end of the electronically controlled switch 52 to be conductive with its second end, while simultaneously controlling the first end of the electronically controlled switch 52 to be closed with its third end, so that the power supply unit 51 supplies power to the heater 30. The control module 70 can also control the first end of the electronically controlled switch 52 to be conductive with its third end, while simultaneously controlling the first end of the electronically controlled switch 52 to be closed with its second end, so that the power supply unit 51 supplies power to the water pump 20. The control module 70 can also control the first end of the electronically controlled switch 52 to be conductive with its second end, while simultaneously controlling the first end of the electronically controlled switch 52 to be closed with its third end, so that the power supply unit 51 supplies power to both the water pump 20 and the heater 30. In this embodiment, the electronically controlled switch 52 is provided in the power supply module 50, so that the power supply unit 51 can be controlled to supply power to the heater 30 and / or the water pump 20 as needed, thereby fully utilizing the electrical energy generated by the liquid generator 40 and improving energy efficiency.

[0058] Optional, continue to refer to Figure 4 The control module 70 is used to control the cooling module 60 to be turned off when the temperature of the coolant is lower than the first preset temperature, and at the same time control the first end of the electric control switch 52 and its second end to be connected, and control the first end of the electric control switch 52 and its third end to be closed; it is also used to control the cooling module 60 to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, and at the same time control the first end of the electric control switch 52 and its second end to be closed, and control the first end of the electric control switch 52 and its third end to be closed; it is also used to control the cooling module 60 to be turned on when the temperature of the coolant is greater than or equal to the second preset temperature, and at the same time control the first end of the electric control switch 52 and its third end to be connected, and control the first end of the electric control switch 52 and its second end to be closed.

[0059] Specifically, when the coolant temperature is lower than the first preset temperature, indicating that the engine 80 is in a cold start and warm-up state, the control module 70 controls the first end and the second end of the electronically controlled switch 52 to be conductive, and the first end and the third end of the electronically controlled switch 52 to be closed, so that the power supply unit 51 can supply power to the heater 30. After supplying power, the heater 30 can heat the coolant and lubricating oil in the cooler 10, thereby improving the cold start efficiency of the engine 80. This eliminates the need for a separate power source to power the heater 30, reducing energy consumption and improving energy utilization. When the coolant temperature is greater than or equal to the first preset temperature and less than the second preset temperature, it indicates that the engine 80 is under a low-to-medium load. At this time, the control module 70 controls the cooling module 60 to be turned on, causing the cooling module 60 to reduce the coolant temperature, thereby reducing the temperature of the engine 80. Simultaneously, the control module 70 controls the first and second ends of the electronically controlled switch 52 to be closed, as well as the first and third ends of the electronically controlled switch 52 to be closed, so that the power supply unit 51 does not supply power to either the water pump 20 or the heater 30. This allows the electrical energy generated by the liquid generator 40 to be stored in the power supply unit 51, increasing the amount of power stored in the power supply unit 51. When the coolant temperature is greater than or equal to the second preset temperature, it indicates that the engine 80 is under a high load. At this time, the control module 70 controls the first and second ends of the electronically controlled switch 52 to be closed, and the first and third ends of the electronically controlled switch 52 to be turned on, so that the water pump 20 receives power from the power supply unit 51 in addition to other power supplies. This increases the power of the water pump 20, thereby increasing the cooling rate of the coolant and further increasing the heat dissipation rate of the engine 80.

[0060] It should be noted that when the water pump 20 is working, another power source supplies power to the water pump 20. When the temperature of the coolant is greater than or equal to the second preset temperature, the other power source and the power supply unit 51 in this embodiment simultaneously supply power to the water pump 20 to increase the power of the water pump 20.

[0061] Optional, Figure 5 is a schematic structural diagram of another hybrid engine cooling system provided according to an embodiment of the present invention, with reference to Figure 5 The power supply unit 51 includes a first transformer 53, an energy storage battery 54 and a second transformer 55; the first end of the first transformer 53 is electrically connected to the transmission end of the liquid generator 40, and the second end of the first transformer 53 is electrically connected to the first end of the energy storage battery 54; the second end of the energy storage battery 54 is electrically connected to the first end of the second transformer 55; the second end of the second transformer 55 is electrically connected to the first end of the electronically controlled switch 52.

[0062] Specifically, the first transformer 53 is used to convert the voltage generated by the liquid generator 40 into a voltage that can be received by the energy storage battery 54, and the second transformer 55 is used to convert the voltage generated by the energy storage battery 54 into a voltage that can be received by the heater 30 and the water pump 20. Providing the first transformer 53 and the second transformer 55 in the power supply unit 51 can increase the service life of the energy storage battery 54, the water pump 20, and the heater 30, and prevent the energy storage battery 54 from being damaged by excessive voltage, and also prevent the heater 30 and the water pump 20 from being damaged by excessive voltage.

[0063] Optional, Figure 6 is a structural diagram of another hybrid engine cooling system provided according to an embodiment of the present invention, with reference to Figure 6 The cooling module includes an electronically controlled thermostat 61 and a radiator 62; the electronically controlled thermostat 61, the radiator 62, the water pump 20 and the engine 80 are connected in a closed loop in sequence; the control module 70 is electrically connected to the electronically controlled thermostat 61, and the control module 70 is used to control the electronically controlled thermostat 61 to be closed when the temperature of the coolant is lower than the first preset temperature; and is also used to control the electronically controlled thermostat 61 to be opened when the temperature of the coolant is greater than or equal to the first preset temperature.

[0064] Specifically, when the temperature of the coolant is greater than or equal to the first preset temperature, the control module 50 can quickly turn on the electronic thermostat 61. When the temperature of the coolant is lower than the first preset temperature, the control module 50 can quickly turn off the electronic thermostat 61. The electronic thermostat 61 has a fast response speed and can quickly adjust the temperature of the coolant.

[0065] Radiator 62 is used to lower the temperature of the coolant. When the electronically controlled thermostat 61 is off, the coolant does not flow through radiator 62. When the electronically controlled thermostat 61 is on, the coolant can flow through radiator 62. In this embodiment, the electronically controlled thermostat 61 is provided in the cooling module. The control module 70 controls the opening and closing of the electronically controlled thermostat 61, thereby controlling the flow path of the coolant and, consequently, the temperature of the coolant.

[0066] Optional, continue to refer to Figure 6 The cooling module further includes a fan 63 ; the fan 63 is located on one side of the radiator 62 , and the fan 63 is used to reduce the temperature of the coolant in the radiator 62 .

[0067] Specifically, providing a fan 63 in the cooling module can accelerate the cooling rate of the coolant, thereby accelerating the cooling rate of the engine 80 and improving the working performance of the engine 80.

[0068] Optionally, the first preset temperature range includes 90°C to 95°C; the second preset temperature range includes 100°C to 105°C.

[0069] Specifically, the first preset temperature may be 90°C, 91°C, or 92°C, and the second preset temperature may be 100°C, 102°C, 103°C, or 105°C. Setting the first preset temperature range to 90°C to 95°C and the second preset temperature range to 100°C to 105°C can better adjust the temperature environment of the engine to improve engine performance.

[0070] This embodiment also provides a control method for a hybrid engine cooling system, wherein the hybrid engine cooling system includes a cooler, a water pump, a heater, a liquid generator, a power module, a cooling module and a control module; the cooler, the water pump and the engine are connected in a closed loop in sequence; the cooling module, the water pump and the engine are connected in a closed loop in sequence; the heater is located on one side of the cooler, and the heater heats the coolant and lubricating oil in the cooler when powered on; the cooling module reduces the temperature of the coolant; the liquid inlet of the liquid generator is connected to the engine, the liquid outlet of the liquid generator is connected to the water pump, and the transmission end of the liquid generator is connected to the power module, the liquid generator generates electricity by the coolant flowing through the liquid generator, and stores the generated electrical energy in the power module; the power module is electrically connected to the water pump and the heater; and the control module is connected to the cooling module.

[0071] Figure 7 is a flow chart of a control method for a hybrid engine cooling system according to an embodiment of the present invention, with reference to Figure 7 , the control method comprises the following steps:

[0072] S110: Obtain the temperature of the coolant.

[0073] S120. When the temperature of the coolant is lower than a first preset temperature, the cooling module is controlled to be turned off, and the heater is controlled to be powered on. When the temperature of the coolant is greater than or equal to the first preset temperature, the cooling module is controlled to be turned on, so that the coolant flows through the cooling module.

[0074] Optionally, the power module includes a power supply unit and an electronically controlled switch; a first end of the electronically controlled switch is electrically connected to an output end of the power supply unit, a second end of the electronically controlled switch is electrically connected to a heater, a third end of the electronically controlled switch is electrically connected to a water pump, and a control end of the electronically controlled switch is electrically connected to a control module; an input end of the power supply unit is electrically connected to a power transmission end of the liquid generator; the control module controls a conduction state of the electronically controlled switch; when the first end of the electronically controlled switch is conductively connected to its second end, the power supply unit supplies power to the heater; when the first end of the electronically controlled switch is conductively connected to its third end, the power supply unit supplies power to the water pump;

[0075] When the temperature of the coolant is lower than the first preset temperature, controlling the cooling module to turn off and controlling the heater to turn on specifically includes:

[0076] When the temperature of the coolant is lower than the first preset temperature, the cooling module is controlled to be turned off, and the first end of the electric control switch is controlled to be conductive with the second end thereof, and the first end of the electric control switch is controlled to be closed with the third end thereof;

[0077] When the temperature of the coolant is greater than or equal to the first preset temperature, controlling the cooling module to turn on so that the coolant flows through the cooling module specifically includes:

[0078] When the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the second end thereof are controlled to be closed, and the first end of the electronically controlled switch and the third end thereof are controlled to be closed; when the temperature of the coolant is greater than or equal to the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the third end thereof are controlled to be turned on, and the first end of the electronically controlled switch and the second end thereof are controlled to be closed.

[0079] The control method of the hybrid engine cooling system provided in this embodiment has corresponding beneficial effects as the hybrid engine cooling system provided in any embodiment of the present invention. For technical details not detailed in this embodiment, please refer to the hybrid engine cooling system provided in any embodiment of the present invention.

[0080] This embodiment also provides a vehicle, which includes the hybrid engine cooling system provided by any embodiment of the present invention.

[0081] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0082] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A hybrid engine cooling system, characterized in that: include: Coolers, water pumps, heaters, liquid generators, power modules, cooling modules and control modules; The cooler, the water pump and the engine are connected in a closed loop in sequence; The cooling module, the water pump and the engine are connected in a closed loop in sequence; The heater is located on one side of the cooler, and is used to heat the coolant and lubricating oil in the cooler when powered on; The cooling module is used to reduce the temperature of the coolant; The liquid inlet of the liquid generator is connected to the engine, the liquid outlet of the liquid generator is connected to the water pump, and the power transmission end of the liquid generator is connected to the power module. The liquid generator is used to generate electricity by the coolant flowing through the liquid generator and store the generated electricity in the power module; The power module is electrically connected to the water pump and the heater; The control module is connected to the cooling module. The control module is used to control the cooling module to turn off when the temperature of the coolant is lower than a first preset temperature, and at the same time control the heater to be powered on; and is also used to control the cooling module to turn on when the temperature of the coolant is greater than or equal to the first preset temperature, so that the coolant flows through the cooling module.

2. The hybrid engine cooling system according to claim 1, characterized in that: The power module includes a power supply unit and an electric control switch; a first end of the electric control switch is electrically connected to the output end of the power supply unit, a second end of the electric control switch is electrically connected to the heater, a third end of the electric control switch is electrically connected to the water pump, and a control end of the electric control switch is electrically connected to the control module; The input end of the power supply unit is electrically connected to the power transmission end of the liquid generator; The control module is further used to control the conduction state of the electronically controlled switch; When the first end of the electric control switch is connected to the second end thereof, the power supply unit is used to supply power to the heater; when the first end of the electric control switch is connected to the third end thereof, the power supply unit is used to supply power to the water pump.

3. The hybrid engine cooling system according to claim 2, characterized in that: The control module is used to control the cooling module to be turned off when the temperature of the coolant is lower than a first preset temperature, and at the same time control the first end of the electric-controlled switch and its second end to be conductive, and control the first end of the electric-controlled switch and its third end to be closed; it is also used to control the cooling module to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, and at the same time control the first end of the electric-controlled switch and its second end to be closed, and control the first end of the electric-controlled switch and its third end to be closed; it is also used to control the cooling module to be turned on when the temperature of the coolant is greater than or equal to the second preset temperature, and at the same time control the first end of the electric-controlled switch and its third end to be conductive, and control the first end of the electric-controlled switch and its second end to be closed.

4. The hybrid engine cooling system according to claim 2, characterized in that: The power supply unit includes a first transformer, an energy storage battery and a second transformer; The first end of the first transformer is electrically connected to the power transmission end of the liquid generator, and the second end of the first transformer is electrically connected to the first end of the energy storage battery; The second end of the energy storage battery is electrically connected to the first end of the second transformer; The second end of the second transformer is electrically connected to the first end of the electronically controlled switch.

5. The hybrid engine cooling system according to any one of claims 1 to 4, characterized in that: The cooling module includes an electronically controlled thermostat and a radiator; The electronically controlled thermostat, the radiator, the water pump and the engine are sequentially connected in a closed loop; The control module is electrically connected to the electronic thermostat. The control module is used to control the electronic thermostat to be turned off when the temperature of the coolant is lower than a first preset temperature; and is also used to control the electronic thermostat to be turned on when the temperature of the coolant is greater than or equal to the first preset temperature.

6. The hybrid engine cooling system according to claim 5, characterized in that: The cooling module further includes a fan; The fan is located at one side of the radiator and is used to reduce the temperature of the coolant in the radiator.

7. The hybrid engine cooling system according to claim 3, characterized in that: The first preset temperature range includes 90°C to 95°C; The second preset temperature range includes 100°C to 105°C.

8. A control method for a hybrid engine cooling system, characterized in that: The hybrid engine cooling system includes a cooler, a water pump, a heater, a liquid generator, a power module, a cooling module and a control module; the cooler, the water pump and the engine are connected in a closed loop in sequence; the cooling module, the water pump and the engine are connected in a closed loop in sequence; the heater is located on one side of the cooler, and the heater heats the coolant and lubricating oil in the cooler when powered on; the cooling module reduces the temperature of the coolant; the liquid inlet of the liquid generator is connected to the engine, the liquid outlet of the liquid generator is connected to the water pump, and the power transmission end of the liquid generator is connected to the power module. The liquid generator generates electricity by the coolant flowing through the liquid generator and stores the generated electricity in the power module; The power module is electrically connected to the water pump and the heater; The control module is connected to the cooling module; The control method includes: When the temperature of the coolant is lower than a first preset temperature, the cooling module is controlled to be turned off, and the heater is controlled to be powered on; When the temperature of the coolant is greater than or equal to the first preset temperature, the cooling module is controlled to be turned on so that the coolant flows through the cooling module.

9. The control method according to claim 8, characterized in that: The power module includes a power supply unit and an electric control switch; a first end of the electric control switch is electrically connected to an output end of the power supply unit, a second end of the electric control switch is electrically connected to the heater, a third end of the electric control switch is electrically connected to the water pump, and a control end of the electric control switch is electrically connected to the control module; an input end of the power supply unit is electrically connected to a power transmission end of the liquid generator; the control module controls the conduction state of the electric control switch; when the first end of the electric control switch is conductively connected to the second end, the power supply unit supplies power to the heater; when the first end of the electric control switch is conductively connected to the third end, the power supply unit supplies power to the water pump; The controlling the cooling module to be turned off when the temperature of the coolant is lower than the first preset temperature and the controlling the heater to be powered on specifically include: When the temperature of the coolant is lower than a first preset temperature, the cooling module is controlled to be turned off, and the first end of the electric control switch and the second end thereof are controlled to be conductive, and the first end of the electric control switch and the third end thereof are controlled to be closed; When the temperature of the coolant is greater than or equal to the first preset temperature, controlling the cooling module to turn on so that the coolant flows through the cooling module specifically includes: When the temperature of the coolant is greater than or equal to the first preset temperature and less than the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the second end are controlled to be closed, and the first end of the electronically controlled switch and the third end are controlled to be closed; when the temperature of the coolant is greater than or equal to the second preset temperature, the cooling module is controlled to be turned on, and the first end of the electronically controlled switch and the third end are controlled to be turned on, and the first end of the electronically controlled switch and the second end are controlled to be closed.

10. A vehicle, characterized in that: A hybrid engine cooling system comprising the hybrid engine cooling system according to any one of claims 1 to 7.

Images