Thermal management system and vehicle having the same

By connecting the engine cooler and the exhaust gas recirculation system cooler in series, and in parallel with the thermostat and radiator, sharing the coolant flow channel, the problems of slow engine warming speed and high water pump power consumption in the existing thermal management system are solved. , achieving low energy consumption, low fuel consumption and fast warm-up.

CN117002250BActive Publication Date: 2025-02-11BYD CO LTD

Patent Information

Application Number
CN202210456199.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-04-28
Publication Date
2025-02-11
Estimated Expiration
2042-04-28

AI Technical Summary

Technical Problem

The existing thermal management system has a slow temperature rise when the engine is warmed up, which cannot meet the needs of energy conservation and emission reduction. At the same time, the independent settings of the cooler and the cooler of the exhaust gas recirculation system lead to high power consumption of the water pump and large engine fuel consumption.

Method used

A thermal management system is designed in which the engine cooler and the exhaust gas recirculation system cooler are connected in series, and the thermostat and radiator are connected in parallel with the exhaust gas recirculation system cooler to reduce the overall flow of the coolant through a shared coolant flow channel and reduce the Water pump power consumption.

Benefits of technology

It realizes the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate, and improves the engine's thermal management efficiency by reducing water pump power consumption and optimizing coolant circulation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a thermal management system and a vehicle having the same, the thermal management system comprising: an engine cooler, the engine cooler having a liquid inlet and a liquid outlet; an exhaust gas recirculation system cooler, one end of the exhaust gas recirculation system cooler is connected to the liquid inlet and the other end is connected to the liquid outlet, the exhaust gas recirculation system cooler is connected in series with the engine cooler; a thermostat and a radiator, the thermostat and the radiator are connected in series and in parallel with the exhaust gas recirculation system cooler, the thermostat is connected to the liquid inlet and the radiator is connected to the liquid outlet. The thermal management system according to the embodiment of the present invention has the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate.
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Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a thermal management system and a vehicle having the same. Background Art

[0002] The thermal management system in the related art usually includes an engine cooler, an exhaust gas recirculation system cooler and a thermostat. However, due to the unreasonable structural setting of the thermal management system in the related art, the temperature of the engine rises slowly during warm-up, which cannot meet the needs of energy conservation and emission reduction. In addition, the cooler and the exhaust gas recirculation system cooler are respectively arranged in two independent pipelines, and coolant needs to be provided to the engine cooler and the exhaust gas recirculation cooler respectively, which leads to a large flow demand for the water pump, high power consumption of the water pump, and high fuel consumption of the engine. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a thermal management system having the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate.

[0004] The present invention also provides a vehicle having the thermal management system.

[0005] To achieve the above-mentioned purpose, a thermal management system is proposed according to a first aspect of the present invention, comprising: an engine cooler, the engine cooler having a liquid inlet and a liquid outlet; an exhaust gas recirculation system cooler, one end of the exhaust gas recirculation system cooler being connected to the liquid inlet and the other end being connected to the liquid outlet, the exhaust gas recirculation system cooler being connected in series with the engine cooler; a thermostat and a radiator, the thermostat and the radiator being connected in series and in parallel with the exhaust gas recirculation system cooler, the thermostat being connected to the liquid inlet and the radiator being connected to the liquid outlet.

[0006] The thermal management system according to the embodiment of the present invention has the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate.

[0007] According to some embodiments of the present invention, the thermal management system further comprises: a warm air module, one end of which is connected to the liquid inlet and the other end of which is connected to the liquid outlet, and the warm air module is connected in series with the engine cooler.

[0008] According to some embodiments of the present invention, the warm air module is connected in parallel with the exhaust gas recirculation system cooler; or, the warm air module is connected in series with the exhaust gas recirculation system cooler.

[0009] According to some embodiments of the present invention, the thermal management system also includes: a battery cooling system; a first heat exchange plate, the first heat exchange plate having a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is connected to the battery cooling system, and one end of the second heat exchange channel is connected to the liquid inlet; a three-way valve, the three-way valve includes a first opening, a second opening and a third opening, the first opening is connected to the liquid inlet, the second opening is connected to the other end of the second heat exchange channel, and the third opening is connected to the warm air module; wherein the third opening can be selectively connected to one of the first opening and the second opening.

[0010] According to some embodiments of the present invention, the third opening is in communication with the heater module via the exhaust gas recirculation system cooler.

[0011] According to some embodiments of the present invention, the thermal management system further includes: an air-conditioning system; a second heat exchange plate, the second heat exchange plate having a third heat exchange channel and a fourth heat exchange channel, the third heat exchange channel is connected to the battery cooling system, and the fourth heat exchange channel is connected to the air-conditioning system.

[0012] According to some embodiments of the present invention, the air-conditioning system includes: a compressor; a first heat exchanger, one end of which is connected to the compressor; a second heat exchanger, one end of which is connected to the other end of the first heat exchanger via an on-off valve, and the other end of the second heat exchanger is connected to the compressor; wherein the two ends of the fourth heat exchange channel are respectively connected to the compressor and the other end of the first heat exchanger.

[0013] According to some embodiments of the present invention, an electronic expansion valve is provided between the fourth heat exchange channel and the other end of the first heat exchanger.

[0014] According to some embodiments of the present invention, the engine cooler includes: a cylinder head water jacket, the cylinder head water jacket is provided with the liquid outlet and is used to cool the cylinder head of the engine; a cylinder body water jacket, the cylinder body water jacket is connected to the liquid outlet and is used to cool the cylinder body of the engine; a connecting water jacket, the connecting water jacket is respectively connected to the cylinder head water jacket and the cylinder body water jacket, and the connecting water jacket is provided with the liquid inlet; wherein the cylinder head water jacket and the cylinder body water jacket are connected in parallel and are connected in series with the connecting water jacket.

[0015] According to some embodiments of the present invention, the thermal management system further includes: a supercharger cooler, the cylinder water jacket having a relative intake side water jacket and an outlet side water jacket, the intake side water jacket is connected to the connecting water jacket, the outlet side water jacket is communicated with the supercharger cooler, and the intake side water jacket and the outlet side water jacket are respectively communicated with the liquid outlet.

[0016] According to a second aspect of the present invention, a vehicle is provided, comprising a thermal management system according to the first aspect of the present invention.

[0017] The vehicle according to the second embodiment of the present invention has the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate by utilizing the thermal management system according to the first embodiment of the present invention.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 Schematic diagram of the structure of a thermal management system according to an embodiment of the present invention.

[0021] Figure 2 is a schematic structural diagram of a thermal management system according to another embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the structure of an engine cooler of a thermal management system according to an embodiment of the present invention.

[0023] Figure 4 is another structural schematic diagram of an engine cooler of a thermal management system according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Thermal management system1.

[0026] Engine cooler 100, liquid inlet 110, liquid outlet 120, cylinder water jacket 130, air intake side water jacket 131, air outlet side water jacket 132, cylinder head water jacket 140, connecting water jacket 150, supercharger cooler 160,

[0027] Exhaust gas recirculation system cooler 200,

[0028] Thermostat 300, radiator 310,

[0029] Warm air module 400,

[0030] Battery cooling system 500, battery pack 510,

[0031] The first heat exchange plate 600, the first heat exchange channel 610, the second heat exchange channel 620,

[0032] Three-way valve 700, first opening 710, second opening 720, third opening 730,

[0033] Air conditioning system 800, compressor 810, first heat exchanger 820, second heat exchanger 830, on-off valve 840, electronic expansion valve 850, expansion valve 860,

[0034] The second heat exchange plate 900 , the third heat exchange channel 910 , and the fourth heat exchange channel 920 . DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0036] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0038] In the description of the present invention, "plurality" means two or more.

[0039] The following describes a thermal management system 1 according to an embodiment of the present invention with reference to the accompanying drawings.

[0040] like Figure 1-Figure 2 As shown, the thermal management system 1 according to the embodiment of the present invention includes an engine cooler 100 , an exhaust gas recirculation system cooler 200 , a thermostat 300 and a radiator 310 .

[0041] The engine cooler 100 has a liquid inlet 110 and a liquid outlet 120, one end of the exhaust gas recirculation system cooler 200 is connected to the liquid inlet 110 and the other end is connected to the liquid outlet 120, the exhaust gas recirculation system cooler 200 is connected in series with the engine cooler 100, the thermostat 300 and the radiator 310 are connected in series and in parallel with the exhaust gas recirculation system cooler 200, the thermostat 300 is connected to the liquid inlet 110 and the radiator 310 is connected to the liquid outlet 120.

[0042] Among them, the thermostat 300 and the radiator 310 are connected in series and in parallel with the exhaust gas recirculation system cooler 200, which means that the thermostat 300 and the radiator 310 are on the same pipeline, and the exhaust gas recirculation system cooler 200 is on another pipeline. A part of the coolant flowing out through the liquid outlet 120 of the engine cooler 100 can flow to the thermostat 300 and the radiator 310, and then flow back to the engine cooler 100 through the liquid inlet 110, while the other part can flow to the exhaust gas recirculation system cooler 200 for heat exchange and then flow back to the engine cooler 100.

[0043] The engine cooler 100 can perform heat exchange with the engine, thereby realizing rapid cooling of the engine, that is, when the engine temperature is too high, the engine can be cooled down quickly to ensure the normal operation of the engine.

[0044] According to the thermal management system 1 of the embodiment of the present invention, the exhaust gas recirculation system cooler 200 is connected in series with the engine cooler 100 by connecting one end of the exhaust gas recirculation system cooler 200 to the liquid inlet 110 and the other end to the liquid outlet 120. In this way, the engine cooler 100 and the exhaust gas recirculation cooler 200 are connected in the same pipeline, and the coolant in the engine cooler 100 can directly flow into the exhaust gas recirculation cooler 200. In other words, there is no need to additionally provide an electronic water pump to provide a driving force for the coolant to the exhaust gas recirculation system cooler 200. Therefore, the cooling requirements of the engine cooler 100 and the exhaust gas recirculation system cooler 200 can be met, and the overall flow rate of the coolant can be reduced, thereby reducing the flow rate of the electronic water pump, thereby reducing the power consumption of the electronic water pump, and reducing the fuel consumption of the engine.

[0045] In addition, the thermostat 300 and the radiator 310 are connected in series and in parallel with the exhaust gas recirculation system cooler 200. The thermostat 300 is connected to the liquid inlet 110 and the radiator 310 is connected to the liquid outlet 120. Therefore, the coolant flowing out of the engine cooler 100 can flow through the exhaust gas recirculation system as well as through the thermostat 300 and the radiator 310. That is to say, the coolant flowing out of the engine cooler 100 has two flow paths. In this way, during the warm-up process, the thermostat 300 can be closed. At this time, the coolant flowing out through the engine cooler 100 does not pass through the radiator 310. At the same time, the speed of the electronic water pump can be reduced to reduce the amount of coolant entering the engine cooler 100. The coolant flowing through the exhaust gas recirculation system cooler 200 can absorb the heat of the exhaust gas recirculation system for warming up the engine, thereby quickly warming up the engine, greatly improving the warm-up efficiency of the engine, further reducing the fuel consumption of the engine and reducing the emission of harmful gases.

[0046] As such, the thermal management system 1 according to the embodiment of the present invention has the advantages of low energy consumption, low engine fuel consumption, and fast warm-up rate.

[0047] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the thermal management system 1 further includes a heater module 400, one end of which is connected to the liquid inlet 110 and the other end of which is connected to the liquid outlet 120, and the heater module 400 is connected in series with the engine cooler 100. Thus, the heater module 400 and the engine cooler 100 can form a cycle, and the coolant in the engine cooler 100 flows through the heater module 400 to heat the vehicle cabin, so that the heat of the engine can be used to heat the vehicle cabin, thereby improving the utilization rate of the engine heat and reducing energy consumption.

[0048] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the heater module 400 is connected in parallel with the exhaust gas recirculation system cooler 200, or the heater module 400 is connected in series with the exhaust gas recirculation system cooler 200, so that the connection between the heater module 400 and the exhaust gas recirculation system cooler 200 is simpler, that is, a part of the coolant flowing out through the engine cooler 100 can flow to the exhaust gas recirculation system cooler 200, and the other part can flow to the heater module 400, so that the coolant flowing through the heater module 400, the coolant flowing through the exhaust gas recirculation system cooler 200 and the coolant and the heat dissipation device shared by the engine cooler 100 do not need to be additionally provided with an electronic water pump to provide driving force for the coolant to the exhaust gas recirculation system cooler 200, and the flow rate and the number of parts of the electronic water pump are reduced while ensuring the cooling demand of the exhaust gas recirculation system cooler 200, which can also reduce the power consumption of the electronic water pump to a certain extent, thereby reducing engine fuel consumption, simplifying the vehicle structure and reducing costs.

[0049] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the thermal management system 1 further includes a battery cooling system 500 , a first heat exchange plate 600 and a three-way valve 700 .

[0050] The first heat exchange plate 600 has a first heat exchange channel 610 and a second heat exchange channel 620. The first heat exchange channel 610 is connected to the battery cooling system 500. One end of the second heat exchange channel 620 is connected to the liquid inlet 110. The three-way valve 700 includes a first opening 710, a second opening 720 and a third opening 730. The first opening 710 is connected to the liquid inlet 110, the second opening 720 is connected to the other end of the second heat exchange channel 620, and the third opening 730 is connected to the warm air module 400. The third opening 730 can be selectively connected to one of the first opening 710 and the second opening 720.

[0051] That is to say, the coolant in the engine cooler 100 can flow through the second heat exchange channel 620, and the coolant in the battery cooling system 500 can flow through the first heat exchange channel 610. In this way, the coolant in the engine cooler 100 and the cooling in the battery cooling system 500 can be heat-exchanged in the first heat exchange plate 600, so that the battery cooling system 500 is heated by the engine cooler 100, further improving the heating rate of the battery cooling system 500 and providing guarantee for the efficiency of the battery. In this way, when heating the battery pack 510, no additional energy is required, which not only improves the efficiency of the battery pack 510, but also does not require additional power consumption, and improves the energy utilization rate.

[0052] Among them, when the second opening 720 is connected to the first opening 710, the engine cooler 100 and the first heat exchange plate 600 are disconnected, that is, the first heat exchange plate 600 does not participate in the coolant circuit in the engine cooler 100, the engine cooler 100 and the battery cooling system 500 do not exchange heat, and the first heat exchange plate 600 is equivalent to a pipeline; and when the second opening 720 and the third opening 730 are connected, the engine cooler 100 and the battery cooling system 500 exchange heat through the first heat exchange plate 600, and the engine cooler 100 can heat the battery cooling system 500.

[0053] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the third opening 730 is communicated with the heater module 400 through the exhaust gas recirculation system cooler 200 .

[0054] In this way, when the battery pack 510 needs to be heated, the coolant will exchange heat with the exhaust gas recirculation system cooler 200 before flowing through the second heat exchange channel 620 to absorb the heat of the exhaust gas recirculation system, so that the temperature of the coolant flowing through the second heat exchange channel 620 is higher, and the temperature of the coolant entering the second heat exchange channel 620 of the first heat exchange plate 600 can be quickly increased. In particular, when starting in a low temperature environment, heat can be quickly provided to the battery cooling system 500, so that the battery pack 510 can quickly reach a suitable temperature, thereby providing protection for the efficiency of the battery. In addition, after the exhaust gas recirculation system cooler 200 is connected in series with the heater module 400, there is no need to add an additional electronic water pump to the exhaust gas recirculation system cooler 200, nor is there a need to increase the flow rate of the electronic water pump. That is to say, the exhaust gas recirculation system cooler 200 and the engine cooler 100 can share the same water pump, which can reduce the power consumption of the electronic water pump to a certain extent, thereby reducing engine fuel consumption.

[0055] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the thermal management system 1 further includes an air conditioning system 800 and a second heat exchange plate 900 .

[0056] The second heat exchange plate 900 has a third heat exchange channel 910 and a fourth heat exchange channel 920 . The third heat exchange channel 910 is connected to the battery cooling system 500 , and the fourth heat exchange channel 920 is connected to the air conditioning system 800 .

[0057] That is, the coolant in the battery cooling system 500 can flow through the third heat exchange channel 910, the refrigerant in the air conditioning system 800 can flow through the fourth heat exchange channel 920, and the coolant in the third heat exchange channel 910 can exchange heat with the refrigerant in the fourth heat exchange channel 920. In this way, when the ambient temperature is low, the refrigerant in the air conditioning system 800 can be used to heat the coolant in the battery cooling system 500, thereby increasing the temperature of the coolant in the battery cooling system 500, and the coolant in the battery cooling system 500 is used to heat the battery pack 510 to ensure that the battery pack 510 is in a comfortable working temperature range; when the ambient temperature is high, the refrigerant in the air conditioning system 800 can be used to cool the coolant in the battery cooling system 500, thereby reducing the temperature of the coolant in the battery cooling system 500, and the coolant in the battery cooling system 500 is used to cool the battery pack 510 to keep the battery pack 510 in a normal working state.

[0058] Furthermore, by providing the first heat exchange plate 600 and the second heat exchange plate 900, the engine cooler 100 and the air conditioning system 800 can simultaneously perform heat exchange with the battery cooling system 500, which further improves the heating rate of the battery cooling system 500 and achieves rapid heating of the battery pack 510, so that no additional energy is required when heating the battery pack 510, which improves the efficiency of the battery pack 510 without requiring additional power consumption. Of course, it is understandable that when the battery pack 510 needs to be heated, only the engine cooler 100 can be used to exchange heat with the battery cooling system 500, and the air conditioning system 800 does not exchange heat with the battery cooling system 500, or only the air conditioning system 800 can be used to exchange heat with the battery cooling system 500 and the engine cooler 100 does not exchange heat with the battery cooling system 500.

[0059] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the air conditioning system 800 includes a compressor 810 , a first heat exchanger 820 , and a second heat exchanger 830 .

[0060] One end of the first heat exchanger 820 is connected to the compressor 810, one end of the second heat exchanger 830 is connected to the other end of the first heat exchanger 820 through the on-off valve 840, and the other end of the second heat exchanger 830 is connected to the compressor 810. The two ends of the fourth heat exchange channel 920 are respectively connected to the compressor 810 and the other end of the first heat exchanger 820. An expansion valve is provided between the first heat exchanger 820 and the second heat exchanger 830, and the expansion valve may be a thermal expansion valve, and the expansion valve may be located between the on-off valve 840 and the second heat exchanger 830.

[0061] For example, the first heat exchanger 820 can be used as a condenser of the air conditioning system 800 for heating, and the second heat exchanger 830 can be used as an evaporator of the air conditioning system 800 for cooling. In addition, the BMS (BATTERY MANAGEMENT SYSTEM) sends cooling, heating, and balancing request signals to the MCU (Micro Control Unit) based on the temperature sensor signal in the battery pack 510. The MCU sets the temperature targets and limits of each part according to the experimental and simulation parameters based on the request signal of the BMS and the temperature and pressure sensors of the air conditioning system 800, and controls the compressor 810, the electronic expansion valve 850 described below, and the electronic water pump to achieve the optimal temperature and energy consumption targets under various working conditions.

[0062] Among them, when the air-conditioning system 800 is cooling, a part of the coolant flowing out of the first heat exchanger 820 flows through the fourth heat exchange channel 920 and exchanges heat with the coolant in the third heat exchange channel 910, thereby cooling the battery cooling system 500, and the other part flows through the on-off valve 840 and the second heat exchanger 830, so that the compressor 810, the first heat exchanger 820, the on-off valve 840 and the second heat exchanger 830 form a refrigerant circuit, the first heat exchanger 820 is a condenser, and the second heat exchanger 830 is an evaporator, which is used to cool the vehicle cabin.

[0063] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, an electronic expansion valve 850 is provided between the fourth heat exchange channel 920 and the other end of the first heat exchanger 820. In this way, the electronic expansion valve 850 can control the on-off between the fourth heat exchange channel 920 and the air conditioning system 800, so that when the temperature of the battery pack 510 is normal, that is, when the battery pack 510 does not need to be heated or cooled, the coolant of the air conditioning system 800 and the battery cooling system 500 do not exchange heat.

[0064] When the air conditioning system 800 performs auxiliary cooling on the battery cooling system 500, the electronic expansion valve 850 is turned on, and the low-temperature and low-pressure gas is converted into high-temperature and high-pressure gas after passing through the compressor 810. The high-temperature and high-pressure gas is converted into high-pressure and low-temperature liquid after passing through the first heat exchanger 820. A part of the high-pressure and low-temperature liquid enters the second heat exchanger 830, so that the compressor 810, the first heat exchanger 820 and the second heat exchanger 830 form a refrigerant circuit for cooling the cabin, and another part of the high-pressure and low-temperature liquid enters the fourth heat exchange channel 920 through the electronic expansion valve 850 to exchange heat with the battery cooling system 500, and then becomes low-pressure and low-temperature gas and enters the compressor 810 to complete the cycle. At this time, the first heat exchanger 820 is a condenser and the second heat exchanger 830 is an evaporator.

[0065] In some specific embodiments of the present invention, Figure 1-Figure 4 As shown, the engine cooler 100 includes a cylinder head water jacket 140 , a cylinder block water jacket 130 and a connecting water jacket 150 .

[0066] The cylinder water jacket 130 is used to cool the cylinder of the engine, and the cylinder head water jacket 140 is used to cool the cylinder head of the engine. The cooling effect of each part of the engine is good, and the cooling is more comprehensive. The connecting water jacket 150 is connected to the cylinder head water jacket 140 and the cylinder water jacket 130 respectively, and the connecting water jacket 150 is provided with a liquid inlet 110. Among them, the cylinder head water jacket 140 and the cylinder water jacket 130 are connected in parallel and connected in series with the connecting water jacket 150.

[0067] It should be noted that the cylinder water jacket 130 and the cylinder head water jacket 140 are connected in parallel and in series with the connecting water jacket 150, which means that after the cylinder water jacket 130 and the cylinder head water jacket 140 are connected in parallel, the two are connected to the connecting water jacket 150 as a whole, and the coolant flowing out of the connecting water jacket 150 can flow to the cylinder water jacket 130 and the cylinder head water jacket 140 respectively, and then the coolant flowing out of the cylinder water jacket 130 and the cylinder head water jacket 140 can be collected together and then divided into three paths, one of which flows to the expansion kettle to take away the gas generated in the engine cooler 100 system, and then the motor water pump in the engine cooler 100 is replenished with water through the expansion kettle to maintain the flow pressure of the coolant in the engine cooler 100 to prevent boiling or cavitation of the electronic water pump; one of which flows through the heater module 400 Then it enters the exhaust gas recirculation system cooler 200. If the battery cooling system 500 has a heating demand, the third opening 730 of the three-way valve 700 is connected with the second opening 720, and the coolant of the heater module 400 flows into the first heat exchange plate 600 and exchanges heat with the battery cooling system 500, and then flows back to the engine cooler 100. If the battery cooling system 500 has no heating demand, the third opening 730 of the three-way valve 700 is connected with the first opening 710, and the coolant of the heater module 400 flows directly back to the engine cooler 100; it enters the thermostat 300 all the way. When the thermostat 300 is opened, the coolant enters the radiator 310 for heat dissipation and then flows back to the engine cooler 100 to complete the cycle. If the thermostat 300 is not opened, the radiator 310 does not participate in the cycle.

[0068] In addition, by adjusting the size of the connecting opening between the water jacket 150 and the cylinder water jacket 130, and the size of the connecting opening between the water jacket 150 and the cylinder head water jacket 140, the flow rate from the water jacket 150 to the cylinder water jacket 130 and the flow rate of the cylinder head water jacket 140 can be reasonably allocated, which can reduce the warm-up time of the engine when starting in a low-temperature environment, thereby reducing fuel consumption and harmful gas emissions. For example, if the connecting opening between the water jacket 150 and the cylinder water jacket 130 is enlarged, the flow rate of the coolant entering the cylinder water jacket 130 will increase, and the flow rate of the coolant entering the cylinder head water jacket 140 will decrease, so that the cooling rate of the engine cooler 100 on the cylinder block and cylinder head of the engine can be adjusted.

[0069] In some specific embodiments of the present invention, Figure 1-Figure 4 As shown, the thermal management system 1 further includes a supercharger cooler 160 .

[0070] The cylinder water jacket 130 has an air intake side water jacket 131 and an air outlet side water jacket 132 opposite to each other. The air intake side water jacket 131 is connected to the connecting water jacket 150, and the air outlet side water jacket 132 is connected to the supercharger cooler 160. The air intake side water jacket 131 and the air outlet side water jacket 132 are respectively connected to the liquid outlet 120. In this way, the coolant flowing out of the water outlet side water jacket 132 can flow into the supercharger cooler 160, and the supercharger cooler 160 can cool the supercharger to prevent the temperature of the supercharger from being too high, so that the supercharger can work normally.

[0071] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes a thermal management system 1 according to the above-described embodiment of the present invention.

[0072] The vehicle according to the embodiment of the present invention has the advantages of low energy consumption, low engine fuel consumption and fast warm-up rate by utilizing the thermal management system 1 according to the above embodiment of the present invention.

[0073] Other configurations and operations of the thermal management system 1 and the vehicle having the same according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0075] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: an engine cooler, the engine cooler having a fluid inlet and a fluid outlet; an exhaust gas recirculation system cooler, one end of the exhaust gas recirculation system cooler being connected to the liquid inlet and the other end of the exhaust gas recirculation system cooler being connected in series with the engine cooler; a thermostat and a radiator, the thermostat and the radiator are connected in series and in parallel with the exhaust gas recirculation system cooler, the thermostat is in communication with the liquid inlet and the radiator is in communication with the liquid outlet; a heating module, one end of which is connected to the liquid inlet and the other end of which is connected to the liquid outlet, and the heating module is connected in series with the engine cooler; A battery cooling system and a first heat exchange plate, wherein the first heat exchange plate has a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is connected to the battery cooling system, and one end of the second heat exchange channel is connected to the liquid inlet; A three-way valve, the three-way valve includes a first opening, a second opening and a third opening, the first opening is connected to the liquid inlet, the second opening is connected to the other end of the second heat exchange channel, the third opening is connected to the warm air module, and the third opening can be selectively connected to one of the first opening and the second opening.

2. The thermal management system according to claim 1, characterized in that: The heating module is connected in parallel with the exhaust gas recirculation system cooler; or The warm air module is connected in series with the exhaust gas recirculation system cooler.

3. The thermal management system according to claim 1, characterized in that: The third opening is in communication with the heater module through the exhaust gas recirculation system cooler.

4. The thermal management system according to claim 1, characterized in that: Also includes: Air conditioning system; The second heat exchange plate has a third heat exchange channel and a fourth heat exchange channel, the third heat exchange channel is connected to the battery cooling system, and the fourth heat exchange channel is connected to the air conditioning system.

5. The thermal management system according to claim 4, characterized in that: The air conditioning system comprises: compressor; A first heat exchanger, one end of which is connected to the compressor; a second heat exchanger, one end of which is connected to the other end of the first heat exchanger through an on-off valve, and the other end of which is connected to the compressor; Wherein, two ends of the fourth heat exchange channel are respectively connected to the compressor and the other end of the first heat exchanger.

6. The thermal management system according to claim 5, characterized in that: An electronic expansion valve is provided between the fourth heat exchange channel and the other end of the first heat exchanger.

7. The thermal management system according to claim 1, characterized in that: The engine cooler comprises: A cylinder head water jacket, wherein the cylinder head water jacket is provided with the liquid outlet and is used for cooling the cylinder head of the engine; A cylinder water jacket, the cylinder water jacket being in communication with the liquid outlet and being used for cooling the cylinder of the engine; A connecting water jacket, the connecting water jacket being connected to the cylinder head water jacket and the cylinder body water jacket respectively, and the connecting water jacket being provided with the liquid inlet; Wherein, the cylinder head water jacket and the cylinder body water jacket are connected in parallel and are connected in series with the connecting water jacket.

8. The thermal management system according to claim 7, characterized in that: Also includes: The supercharger cooler, the cylinder water jacket has an intake side water jacket and an outlet side water jacket relative to each other, the intake side water jacket is connected to the connecting water jacket, the outlet side water jacket is communicated with the supercharger cooler, and the intake side water jacket and the outlet side water jacket are respectively communicated with the liquid outlet.

9. A vehicle, characterized in that: Comprising a thermal management system according to any one of claims 1-8.

Citation Information

Patent Citations

  • Plug-in hybrid electric vehicle heat management system

    CN109795313A

  • Engine heat management system

    CN112483236A

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