Thermal management system, method and extended-range vehicle

Abstract

The present application provides a thermal management system, method and extended-range vehicle for an extended-range vehicle, wherein the thermal management system of the extended-range vehicle includes a high-temperature coolant circuit; the high-temperature coolant circuit includes a range extender, a temperature-controlled five-way valve, a PCT heater, a three-way proportional valve, a water heating core, a heating channel of a plate heat exchanger, a first water pump, a high-temperature radiator, a high-temperature kettle, a stop valve and a controller. Since the controller can control the working state of the high-temperature coolant circuit according to different cooling and / or heat demand modes of the extended-range vehicle, and the thermal management system includes the temperature-controlled five-way valve, the difficulty of arranging the HVAC heating circuit can be reduced; the number of water valve and water pump components can be reduced, the integration of the thermal management system can be improved, and the cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a thermal management system and method for an extended-range vehicle, and an extended-range vehicle. Background Art

[0002] At present, when the thermal management system of extended-range new energy vehicles (or other hybrid models) in the industry uses the waste heat of the range extender to heat the warm air, it is necessary to use an independent PTC circuit water pump and an electronic three-way proportional valve to realize the circuit on and off.

[0003] Using the above method, the HVAC heating circuit layout is difficult and the pipeline route is complicated; a large number of water valves and water pump components are used, and the thermal management system has a low degree of integration and high cost. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a thermal management system, method and extended-range vehicle for an extended-range vehicle.

[0005] In a first aspect, an embodiment of the present application provides a thermal management system for an extended-range vehicle, comprising: a high-temperature coolant circuit; the high-temperature coolant circuit comprises a range extender, a temperature-controlled five-way valve, a PTC heater, a three-way proportional valve, a water heating core, a temperature-raising channel of a plate heat exchanger, a first water pump, a high-temperature radiator, a high-temperature kettle, a stop valve, and a controller;

[0006] The cylinder liquid outlet of the range extender is connected to the first end pipeline of the temperature control five-way valve, the cylinder liquid inlet of the range extender is connected to the liquid outlet of the first water pump and the second end pipeline of the temperature control five-way valve, the third end of the temperature control five-way valve is connected to the liquid inlet pipeline of the first water pump, the fourth end of the temperature control five-way valve is connected to the first end pipeline of the high-temperature radiator, the fifth end of the temperature control five-way valve is connected to the first end pipeline of the PTC heater, the second end of the high-temperature radiator is connected to the liquid inlet end pipeline of the first water pump, and the second end of the PTC heater is connected to the liquid inlet end pipeline of the first water pump through the first end and The third end of the three-way proportional valve is connected to the first end pipeline of the water heating core, the second end of the PTC heater is also connected to the first end pipeline of the heating channel of the plate heat exchanger through the first end of the three-way proportional valve and the second end of the three-way proportional valve, the second end of the water heating core is connected to the liquid inlet pipeline of the first water pump, the second end of the water heating core is also connected to the liquid inlet pipeline of the high-temperature kettle through the stop valve, the liquid outlet of the high-temperature kettle is connected to the liquid inlet pipeline of the first water pump, and the second end of the heating channel of the plate heat exchanger is connected to the liquid inlet pipeline of the first water pump;

[0007] The controller is in communication connection with the range extender, the temperature-controlled five-way valve, the PTC heater, the three-way proportional valve, the first water pump and the stop valve, and the controller is used for:

[0008] The working state of the high-temperature coolant circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

[0009] In a possible implementation, a refrigerant circuit is further included; the refrigerant circuit includes a compressor, a condenser, a battery cooler, an electronic expansion valve, an electronic valve, and an evaporator;

[0010] The outlet end of the compressor is connected to the first end pipeline of the condenser, the second end of the condenser is connected to the first end pipeline of the evaporator through the electronic expansion valve, the second end of the condenser is also connected to the first end pipeline of the battery cooler through the electronic valve, and the second end of the battery cooler is connected to the inlet end pipeline of the compressor;

[0011] The controller is also in communication with the compressor, the electronic expansion valve and the electronic valve, and is further used for:

[0012] The operating mode of the refrigerant circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

[0013] In a possible implementation, it also includes an electric drive battery series-parallel circuit; the electric drive battery series-parallel circuit includes a low-temperature radiator, a low-temperature kettle, a second water pump, an electric drive system, a four-way control valve, a cooling channel of a plate heat exchanger, the battery cooler, a third water pump and a battery pack;

[0014] The first end of the low-temperature radiator is connected to the liquid inlet pipeline of the low-temperature kettle, the liquid outlet of the low-temperature kettle is connected to the liquid inlet pipeline of the second water pump, the liquid outlet of the second water pump is electrically connected to the first end of the electric drive system, the second end of the electric drive system is connected to the second end pipeline of the low-temperature radiator through the second end of the four-way control valve and the first end of the four-way control valve, the first end of the battery pack is connected to the first end pipeline of the cooling channel of the plate heat exchanger through the fourth end of the four-way control valve and the third end of the four-way control valve, the second end of the cooling channel of the plate heat exchanger is connected to the first end pipeline of the battery cooler, the second end of the battery cooler is connected to the liquid inlet pipeline of the third water pump, and the liquid outlet of the third water pump is connected to the second end pipeline of the battery pack;

[0015] The controller is also in communication with the second water pump, the four-way control valve and the third water pump, and the controller is also used for:

[0016] The operating mode of the electric drive battery series-parallel circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

[0017] In a second aspect, an embodiment of the present application provides a thermal management control method for an extended-range vehicle, which is applied to a thermal management system of an extended-range vehicle as described in any one of the first aspects, and the method includes:

[0018] Determine that the heat demand mode is heating and / or heating, and use range extender heat recovery;

[0019] Control the first end of the temperature-controlled five-way valve and the fourth end of the temperature-controlled five-way valve to open, control the first end of the temperature-controlled five-way valve and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to open, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to open.

[0020] In a possible implementation, the method further includes:

[0021] Determine the cooling mode as range extender cooling;

[0022] The first end of the temperature control five-way valve and the third end of the temperature control five-way valve are controlled to be open, the first end of the temperature control five-way valve and the fourth end of the temperature control five-way valve are controlled to be open, and the first water pump is controlled to be turned on to achieve cooling of the range extender.

[0023] In a possible implementation, the method further includes:

[0024] If it is determined that the cooling mode is battery cooling and / or passenger compartment cooling, the compressor is controlled to start, the electronic expansion valve is controlled to open, and the electronic valve is controlled to open.

[0025] In a possible implementation, the method further includes:

[0026] If the cooling mode is determined to be battery cooling and / or electric drive cooling, the first end of the four-way control valve and the second end of the four-way control valve are controlled to be open, and the third end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open; or

[0027] If the cooling mode is determined to be single-battery cooling, the second end of the four-way control valve and the third end of the four-way control valve are controlled to be open, the first end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open, the second water pump is controlled to be opened, and the third water pump is controlled to be opened.

[0028] In a possible implementation, the method further includes:

[0029] Determine that the heat demand mode is heating and / or heating, and use PTC heater for heating, then control the second end and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to start, control the PTC heater to start, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to start.

[0030] In a possible implementation, the method further includes:

[0031] Determine the coolant filling mode, control the first end of the temperature-controlled five-way valve and the fourth end of the temperature-controlled five-way valve to open at a first preset ratio, control the first end of the temperature-controlled five-way valve and the fifth end of the temperature-controlled five-way valve to open at the first preset ratio, control the first water pump to open at a first preset duty cycle, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the first end of the three-way proportional valve to open at the first preset ratio, control the first end of the three-way proportional valve and the second end of the third end of the three-way proportional valve to open at the first preset ratio, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, control the second water pump to open at a second preset duty cycle, and control the third water pump to open at the second preset duty cycle.

[0032] In a third aspect, an embodiment of the present application provides an extended-range vehicle, comprising a thermal management system for the extended-range vehicle as described in any one of the first aspects.

[0033] In summary, the present application proposes a thermal management system, method and extended-range vehicle for an extended-range vehicle, wherein the thermal management system of the extended-range vehicle includes a high-temperature coolant circuit; the high-temperature coolant circuit includes a range extender, a temperature-controlled five-way valve, a PTC heater, a three-way proportional valve, a water heating core, a heating channel of a plate heat exchanger, a first water pump, a high-temperature radiator, a high-temperature kettle, a stop valve and a controller. Since the controller can control the working state of the high-temperature coolant circuit according to different cooling and / or heat demand modes of the extended-range vehicle, and the thermal management system includes a temperature-controlled five-way valve, the difficulty of arranging the HVAC heating circuit can be reduced; the water valve and water pump components can be reduced, the integration of the thermal management system can be improved, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a thermal management system for an extended-range vehicle provided in an embodiment of the present application;

[0035] Figure 2A schematic diagram of the structure of another thermal management system for an extended-range vehicle provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the structure of another thermal management system for an extended-range vehicle provided in an embodiment of the present application;

[0037] Figure 4 A schematic flow chart of a thermal management control method for an extended-range vehicle provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of a working mode of a temperature-controlled five-way valve provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of a working mode of thermal management of an extended-range vehicle provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of another working mode of thermal management of an extended-range vehicle provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of another working mode of thermal management of an extended-range vehicle provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of another working mode of thermal management of an extended-range vehicle provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of another operating mode of thermal management of an extended-range vehicle provided in an embodiment of the present application.

[0044] The text annotations in the figure represent:

[0045] 10-range extender; 20-temperature control five-way valve; 30-PTC heater; 40-three-way proportional valve; 50-water heating core; 601-heating channel of plate heat exchanger; 602-cooling channel of plate heat exchanger; 70-high-temperature radiator; 80-first water pump; 90-high-temperature kettle; 100-stop valve; 110-low-temperature radiator; 120-low-temperature kettle; 130-second water pump; 140-first temperature sensor; 150-electric drive system; 160-four-way control valve; 170-battery cooler; 180-third water pump; 190-second temperature sensor; 200-battery pack; 210-condenser; 220-pressure sensor; 230-electronic expansion valve; 240-evaporator; 250-pressure and temperature sensor; 260-compressor; 270-electronic valve. DETAILED DESCRIPTION

[0046] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] As mentioned in the background technology, in view of the problems in the prior art, this application proposes a thermal management system for an extended-range vehicle, such as Figure 1 As shown, the system includes: a high-temperature coolant circuit; the high-temperature coolant circuit includes a range extender 10, a temperature-controlled five-way valve 20, a PTC heater 30, a three-way proportional valve 40, a water heating core 50, a temperature-raising channel 601 of a plate heat exchanger, a first water pump 80, a high-temperature radiator 70, a high-temperature kettle 90, a stop valve 100 and a controller (not shown in the figure);

[0049] The cylinder liquid outlet of the range extender 10 is connected to the first end pipeline of the temperature control five-way valve 20, the cylinder liquid inlet of the range extender 10 is connected to the liquid outlet of the first water pump 80 and the second end pipeline of the temperature control five-way valve 20, the third end of the temperature control five-way valve 20 is connected to the liquid inlet pipeline of the first water pump 80, the fourth end of the temperature control five-way valve 20 is connected to the first end pipeline of the high-temperature radiator 70, the fifth end of the temperature control five-way valve 20 is connected to the first end pipeline of the PTC heater 30, the second end of the high-temperature radiator 70 is connected to the liquid inlet end pipeline of the first water pump 80, and the second end of the PTC heater 30 is connected to the first end of the three-way proportional valve 40 and The third end of the three-way proportional valve 40 is connected to the first end pipeline of the water heating core 50, the second end of the PTC heater 30 is also connected to the first end pipeline of the heating channel 601 of the plate heat exchanger through the first end of the three-way proportional valve 40 and the second end of the three-way proportional valve 40, the second end of the water heating core 50 is connected to the liquid inlet pipeline of the first water pump 80, the second end of the water heating core 50 is also connected to the liquid inlet pipeline of the high-temperature kettle 90 through the stop valve 100, the liquid outlet of the high-temperature kettle 90 is connected to the liquid inlet pipeline of the first water pump 80, and the second end of the heating channel 601 of the plate heat exchanger is connected to the liquid inlet pipeline of the first water pump 80;

[0050] The controller is in communication with the range extender 10, the temperature-controlled five-way valve 20, the PTC heater 30, the three-way proportional valve 40, the first water pump 80 and the stop valve 100, and is used for:

[0051] According to different cooling and / or thermal demand modes of the extended-range vehicle, the working state of the high-temperature coolant circuit is controlled.

[0052] In the embodiment of the present application, the thermal management system of the extended-range vehicle includes a high-temperature coolant circuit; the high-temperature coolant circuit includes a range extender 10, a temperature-controlled five-way valve 20, a PTC heater 30, a three-way proportional valve 40, a water heating core 50, a heating channel 601 of a plate heat exchanger, a first water pump 80, a high-temperature radiator 70, a high-temperature kettle 90, a stop valve 100 and a controller. Since the controller can control the working state of the high-temperature coolant circuit according to different cooling and / or heat demand modes of the extended-range vehicle, and the thermal management system includes the temperature-controlled five-way valve 20, the difficulty of arranging the HVAC heating circuit can be reduced; the water valve and water pump components are reduced, the integration of the thermal management system is improved, and the cost is reduced.

[0053] The temperature-controlled five-way valve 20 provided in the embodiment of the present application can be integrated on the range extender 10 .

[0054] It should be noted that, in the temperature-controlled five-way valve 20 in the accompanying drawings, "1" represents the first end of the temperature-controlled five-way valve 20, "2" represents the second end of the temperature-controlled five-way valve 20, "3" represents the third end of the temperature-controlled five-way valve 20, "4" represents the fourth end of the temperature-controlled five-way valve 20, and "5" represents the fifth end of the temperature-controlled five-way valve 20.

[0055] In one embodiment, the thermal management system of the extended-range vehicle provided in the embodiment of the present application further includes a refrigerant circuit; the refrigerant circuit includes a compressor 260, a condenser 210, a battery cooler 170, an electronic expansion valve 230, an electronic valve 270 and an evaporator 240;

[0056] The outlet end of the compressor 260 is connected to the first end of the condenser 210 by a pipeline, the second end of the condenser 210 is connected to the first end of the evaporator 240 by a pipeline through the electronic expansion valve 230, the second end of the condenser 210 is also connected to the first end of the battery cooler 170 by a pipeline through the electronic valve 270, and the second end of the battery cooler 170 is connected to the inlet end of the compressor 260 by a pipeline;

[0057] The controller is also in communication with the compressor 260, the electronic expansion valve 230 and the electronic valve 270, and is also used for:

[0058] According to different cooling and / or heating demand modes of the extended-range vehicle, the working state of the refrigerant circuit is controlled.

[0059] In one embodiment, the thermal management system of the extended-range vehicle provided in the embodiment of the present application further includes an electric drive battery series-parallel circuit; the electric drive battery series-parallel circuit includes a low-temperature radiator 110, a low-temperature kettle 120, a second water pump 130, an electric drive system 150, a four-way control valve 160, a cooling channel 602 of a plate heat exchanger, a battery cooler 170, a third water pump 180, and a battery pack 200;

[0060] The first end of the low-temperature radiator 110 is connected to the liquid inlet pipeline of the low-temperature kettle 120, the liquid outlet of the low-temperature kettle 120 is connected to the liquid inlet pipeline of the second water pump 130, the liquid outlet of the second water pump 130 is electrically connected to the first end of the electric drive system 150, the second end of the electric drive system 150 is connected to the second end pipeline of the low-temperature radiator 110 through the second end of the four-way control valve 160 and the first end of the four-way control valve 160, the first end of the battery pack 200 is connected to the first end pipeline of the cooling channel 602 of the plate heat exchanger through the fourth end of the four-way control valve 160 and the third end of the four-way control valve 160, the second end of the cooling channel 602 of the plate heat exchanger is connected to the first end pipeline of the battery cooler 170, the second end of the battery cooler 170 is connected to the liquid inlet pipeline of the third water pump 180, and the liquid outlet of the third water pump 180 is connected to the second end pipeline of the battery pack 200;

[0061] The controller is also in communication with the second water pump 130, the four-way control valve 160 and the third water pump 180, and is also used for:

[0062] According to different cooling and / or thermal demand modes of the extended-range vehicle, the operating mode of the electric drive battery series-parallel circuit is controlled.

[0063] It should be noted that, in the four-way control valve 160 in the accompanying drawings, "1" represents the first end of the four-way control valve 160, "2" represents the second end of the four-way control valve 160, "3" represents the third end of the four-way control valve 160, and "4" represents the fourth end of the four-way control valve 160.

[0064] like Figure 1~Figure 3 As shown, the thermal management system provided in the embodiment of the present application may also include a first temperature sensor 140, a second temperature sensor 190, a pressure sensor 220 and a pressure-temperature sensor 250, wherein the first temperature sensor 140 is arranged on the pipeline between the second water pump 130 and the electric drive system 150, and is used to collect the temperature of the liquid flowing out of the liquid outlet of the second water pump 130; the second temperature sensor 190 is arranged on the pipeline between the third water pump 180 and the second end of the battery pack 200, and is used to collect the temperature of the liquid flowing out of the liquid outlet of the third water pump 180; the pressure sensor 220 is arranged on the pipeline between the condenser 210 and the battery cooler 170, and is used to measure the pressure of the refrigerant output from the second end of the condenser 210; the pressure-temperature sensor 250 is arranged on the pipeline at the inlet end of the compressor 260, and is used to measure the pressure and temperature of the refrigerant entering the compressor 260.

[0065] The first temperature sensor 140, the second temperature sensor 190, the pressure sensor 220 and the pressure-temperature sensor 250 in the embodiment of the present application can monitor the temperature and / or pressure in real time, so as to control the system to operate better.

[0066] The range-extended vehicle thermal management system provided in the embodiment of the present application optimizes or changes the range extender thermostat structure, reduces the number of system electronic water pumps and three-way proportional valves; optimizes the range extender electronic water pump control strategy, and uses the range extender electronic water pump to achieve loop coolant circulation when PTC heating and battery heating are used; optimizes the thermal management system working mode during cold start of the range extender, reduces the cold start time of the range extender, and reduces energy consumption;

[0067] This system uses the waste heat of the range extender and a water PTC to heat the passenger compartment and the battery, with high energy utilization rate; a five-way valve with a water temperature sensor, namely a temperature-controlled five-way valve, is used to adjust the temperature-controlled five-way valve mode according to the actual water temperature of the range extender to realize different flow paths of the range extender water, and the three-way control valve of the warm air heating circuit is eliminated, and the system control is simple and efficient; the range extender electronic water pump is used in conjunction with the temperature-controlled three-way valve to realize the water circulation of the engine cooling circuit, HVAC heating and battery heating circuit, reducing one electronic water pump, and the system is efficient and low-cost; in extremely cold conditions, when the range extender is cold-started, the PTC hot water can be connected to the range extender through the range extender electronic water pump to heat it, reducing the cold start time of the range extender and reducing fuel consumption.

[0068] Based on the same inventive concept, an embodiment of the present application also provides a thermal management control method for an extended-range vehicle. The principle of solving the problem by this method is similar to the principle of solving the problem by any of the above-mentioned thermal management systems of the extended-range vehicle, and the repeated parts will not be repeated.

[0069] like Figure 4 As shown, an embodiment of the present application provides a thermal management control method for an extended-range vehicle, which is applied to any of the above-mentioned thermal management systems of the extended-range vehicle. The method includes the following steps:

[0070] S401, determining that the heat demand mode is heating and / or heating, and using range extender heat recovery;

[0071] S402, control the first end of the temperature-controlled five-way valve and the fourth end of the temperature-controlled five-way valve to open, control the first end of the temperature-controlled five-way valve and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to open, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to open.

[0072] In one embodiment, the method further comprises:

[0073] Determine the cooling mode as range extender cooling;

[0074] The first end of the temperature control five-way valve and the third end of the temperature control five-way valve are controlled to be open, the first end of the temperature control five-way valve and the fourth end of the temperature control five-way valve are controlled to be open, and the first water pump is controlled to be turned on to achieve cooling of the range extender 10.

[0075] In one embodiment, the method further comprises:

[0076] If it is determined that the cooling mode is battery cooling and / or passenger compartment cooling, the compressor is controlled to start, the electronic expansion valve is controlled to open, and the electronic valve is controlled to open.

[0077] In one embodiment, the method further comprises:

[0078] If the cooling mode is determined to be battery cooling and / or electric drive cooling, the first end of the four-way control valve and the second end of the four-way control valve are controlled to be open, and the third end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open; or

[0079] If the cooling mode is determined to be single-battery cooling, the second end of the four-way control valve and the third end of the four-way control valve are controlled to be open, the first end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open, the second water pump is controlled to be opened, and the third water pump is controlled to be opened.

[0080] In one embodiment, the method further comprises:

[0081] Determine that the heat demand mode is heating and / or heating, and use PTC heater for heating, then control the second end and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to start, control the PTC heater to start, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to start.

[0082] In one embodiment, the method further comprises:

[0083] Determine the coolant filling mode, control the first end of the temperature controlled five-way valve and the fourth end of the temperature controlled five-way valve to open at a first preset ratio, control the first end of the temperature controlled five-way valve and the fifth end of the temperature controlled five-way valve to open at a first preset ratio, control the first water pump to open at a first preset duty cycle, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the first end of the three-way proportional valve to open at a first preset ratio, control the first end of the three-way proportional valve and the second end of the third end of the three-way proportional valve to open at a first preset ratio, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, control the second water pump to open at a second preset duty cycle, and control the third water pump to open at a second preset duty cycle.

[0084] It should be noted that the temperature-controlled five-way valve provided in the embodiment of the present application can control the water outlet flow direction of the range extender by judging the water temperature in different working states of the range extender, so as to realize the water outlet path state in various working modes of the range extender. Especially when the system is heated in pure electric working condition, the range extender water pump is connected to the PTC heating circuit to realize warm air heating and battery heating, which has a simple structure and powerful functions.

[0085] like Figure 5 As shown, this is the working mode of the temperature-controlled five-way valve provided in the embodiment of the present application.

[0086] In order to facilitate understanding of the extended-range vehicle thermal management control method provided in an embodiment of the present application, the present application is described below with reference to a specific embodiment.

[0087] 1. Cooling mode:

[0088] 1. Battery cooling and / or passenger compartment cooling (dehumidification):

[0089] Reference Figure 3 , the controller controls the compressor 260 to start, controls the electronic expansion valve 230 to open, and controls the electronic valve 270 to open, so as to control the refrigerant circuit to be in a working state;

[0090] The compressor 260 is started, the electronic expansion valve 230 is opened, the electronic valve 270 is opened, and the refrigerant flows through the condenser 210 to be cooled, and then flows through the evaporator 240 and the battery cooler 170 .

[0091] The cooled refrigerant flows through the evaporator 240 to cool the passenger compartment, and the cooled refrigerant flows through the battery cooler 170 to cool the battery.

[0092] 2. Range extender cooling:

[0093] Reference Figure 6 The controller controls the first end of the temperature-controlled five-way valve 20 and the third end of the temperature-controlled five-way valve 20 to open, controls the first end of the temperature-controlled five-way valve 20 and the fourth end of the temperature-controlled five-way valve 20 to open, and controls the first water pump 80 to open.

[0094] The range extender water passes through the first end of the temperature control five-way valve 20, the third end of the temperature control five-way valve 20, and the high-temperature radiator 70 for a small cooling cycle, and passes through the first end of the temperature control five-way valve 20, the fourth end of the temperature control five-way valve 20, and the high-temperature radiator 70 for a large cooling cycle to cool the range extender 10.

[0095] 3. Battery cooling and / or electric drive cooling:

[0096] Reference Figure 2The controller controls the first end of the four-way control valve 160 and the second end of the four-way control valve 160 to be opened, and controls the third end of the four-way control valve 160 and the fourth end of the four-way control valve 160 to be opened.

[0097] The electric drive circuit is connected to the low-temperature radiator 110 for cooling; the coolant in the battery pack circuit is cooled by the battery cooler 170.

[0098] 4. Single battery refrigeration:

[0099] Reference Figure 7 The controller controls the second end of the four-way control valve 160 and the third end of the four-way control valve 160 to open, controls the first end of the four-way control valve 160 and the fourth end of the four-way control valve 160 to open, controls the second water pump 130 to open, and controls the third water pump 180 to open.

[0100] The battery pack is cooled by a low-temperature radiator 110 .

[0101] The embodiment of the present application is suitable for charging the battery in spring and autumn.

[0102] 2. Heating and / or heating mode:

[0103] 1. Use PTC:

[0104] Reference Figure 8 , control the second end of the temperature-controlled five-way valve 20 and the fifth end of the temperature-controlled five-way valve 20 to open, control the first water pump 80 to open, control the PTC heater 30 to open, control the first end of the three-way proportional valve 40 and the second end of the three-way proportional valve 40 to open, control the first end of the three-way proportional valve 40 and the third end of the three-way proportional valve 40 to open, control the first end of the four-way control valve 160 and the second end of the four-way control valve 160 to open, control the third end of the four-way control valve 160 and the fourth end of the four-way control valve 160 to open, and control the third water pump 180 to open.

[0105] The first water pump 80 enables the water heated by the PTC heater to flow through the water heating core 50 and / or the temperature rising channel 601 of the plate heat exchanger.

[0106] The PTC heater 30 heats the water flowing through the water heating core 50 to achieve heating of the passenger compartment; the PTC heater 30 heats the water flowing through the heating channel 601 of the plate heat exchanger, and the battery pack circuit coolant is heated after passing through the cooling channel 602 of the plate heat exchanger, thereby heating the battery pack.

[0107] 2. Use range extender waste heat for heating:

[0108] Reference Fig. 9The controller controls the first end of the temperature-controlled five-way valve 20 and the fourth end of the temperature-controlled five-way valve 20 to open, controls the first end of the temperature-controlled five-way valve 20 and the fifth end of the temperature-controlled five-way valve 20 to open, controls the first water pump 80 to open, controls the PTC heater 30 to close, controls the first end of the three-way proportional valve 40 and the second end of the three-way proportional valve 40 to open, controls the first end of the three-way proportional valve 40 and the third end of the three-way proportional valve 40 to open, controls the first end of the four-way control valve 160 and the second end of the four-way control valve 160 to open, controls the third end of the four-way control valve 160 and the fourth end of the four-way control valve 160 to open, and controls the third water pump 180 to open.

[0109] The first water pump 80 allows the excess hot water of the range extender 10 to flow through the water heating core 50 to achieve heating of the passenger compartment; the first water pump 80 allows the excess hot water of the range extender 10 to flow through the heating channel 601 of the plate heat exchanger, and the battery pack loop coolant is heated after passing through the cooling channel 602 of the plate heat exchanger to achieve heating of the battery pack.

[0110] 3. Coolant filling mode:

[0111] Reference Fig.10 The controller controls the first end of the temperature-controlled five-way valve 20 and the fourth end of the temperature-controlled five-way valve 20 to open at a ratio of 50%, controls the first end of the temperature-controlled five-way valve 20 and the fifth end of the temperature-controlled five-way valve 20 to open at a ratio of 50%, controls the first water pump 80 to open at a 50% duty cycle, controls the PTC heater 30 to be closed, controls the three-way proportional valve 40 to open at a ratio of 50% (1-2, 1-3 to open at a ratio of 50%), controls the four-way control valve 160 to be connected in parallel (1-2 connected, 3-4 connected), controls the second water pump 130 to open at a duty cycle of 80%, and controls the third water pump 180 to open at a duty cycle of 80%.

[0112] High-temperature circuit: After the coolant is injected from the filling port of the high-temperature kettle 90, it flows through the temperature-controlled five-way valve 20 to the high-temperature radiator 70, the water heating core 50, and the heating channel 601 of the plate heat exchanger; Low-temperature circuit: The coolant is injected from the filling port of the low-temperature kettle 120, and the battery pack 200 and the electric drive system 150 are connected in series through the four-way control valve 160 to achieve filling.

[0113] Based on the same inventive concept, an embodiment of the present application also provides an extended-range vehicle, the principle of solving the problem by the vehicle is similar to the principle of solving the problem by the thermal management system of any of the above-mentioned extended-range vehicles, and the repeated parts will not be repeated.

[0114] An embodiment of the present application provides an extended-range vehicle, including a thermal management system for the extended-range vehicle as described above.

[0115] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A thermal management system for an extended-range vehicle, characterized in that: include: High-temperature coolant circuit; the high-temperature coolant circuit includes a range extender, a temperature-controlled five-way valve, a PTC heater, a three-way proportional valve, a water heating core, a temperature-raising channel of a plate heat exchanger, a first water pump, a high-temperature radiator, a high-temperature kettle, a stop valve and a controller; The cylinder liquid outlet of the range extender is connected to the first end pipeline of the temperature control five-way valve, the cylinder liquid inlet of the range extender is connected to the liquid outlet of the first water pump and the second end pipeline of the temperature control five-way valve, the third end of the temperature control five-way valve is connected to the liquid inlet pipeline of the first water pump, the fourth end of the temperature control five-way valve is connected to the first end pipeline of the high-temperature radiator, the fifth end of the temperature control five-way valve is connected to the first end pipeline of the PTC heater, the second end of the high-temperature radiator is connected to the liquid inlet end pipeline of the first water pump, and the second end of the PTC heater is connected to the liquid inlet end pipeline of the first water pump through the first end and The third end of the three-way proportional valve is connected to the first end pipeline of the water heating core, the second end of the PTC heater is also connected to the first end pipeline of the heating channel of the plate heat exchanger through the first end of the three-way proportional valve and the second end of the three-way proportional valve, the second end of the water heating core is connected to the liquid inlet pipeline of the first water pump, the second end of the water heating core is also connected to the liquid inlet pipeline of the high-temperature kettle through the stop valve, the liquid outlet of the high-temperature kettle is connected to the liquid inlet pipeline of the first water pump, and the second end of the heating channel of the plate heat exchanger is connected to the liquid inlet pipeline of the first water pump; The controller is in communication connection with the range extender, the temperature-controlled five-way valve, the PTC heater, the three-way proportional valve, the first water pump and the stop valve, and the controller is used for: The working state of the high-temperature coolant circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

2. The thermal management system according to claim 1, characterized in that: Also includes a refrigerant circuit; the refrigerant circuit includes a compressor, a condenser, a battery cooler, an electronic expansion valve, an electronic valve and an evaporator; The outlet end of the compressor is connected to the first end pipeline of the condenser, the second end of the condenser is connected to the first end pipeline of the evaporator through the electronic expansion valve, the second end of the condenser is also connected to the first end pipeline of the battery cooler through the electronic valve, and the second end of the battery cooler is connected to the inlet end pipeline of the compressor; The controller is also in communication with the compressor, the electronic expansion valve and the electronic valve, and is further used for: The operating mode of the refrigerant circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

3. The thermal management system according to claim 2, characterized in that: It also includes an electric drive battery series-parallel circuit; the electric drive battery series-parallel circuit includes a low-temperature radiator, a low-temperature kettle, a second water pump, an electric drive system, a four-way control valve, a cooling channel of a plate heat exchanger, the battery cooler, a third water pump and a battery pack; The first end of the low-temperature radiator is connected to the liquid inlet pipeline of the low-temperature kettle, the liquid outlet of the low-temperature kettle is connected to the liquid inlet pipeline of the second water pump, the liquid outlet of the second water pump is electrically connected to the first end of the electric drive system, the second end of the electric drive system is connected to the second end pipeline of the low-temperature radiator through the second end of the four-way control valve and the first end of the four-way control valve, the first end of the battery pack is connected to the first end pipeline of the cooling channel of the plate heat exchanger through the fourth end of the four-way control valve and the third end of the four-way control valve, the second end of the cooling channel of the plate heat exchanger is connected to the first end pipeline of the battery cooler, the second end of the battery cooler is connected to the liquid inlet pipeline of the third water pump, and the liquid outlet of the third water pump is connected to the second end pipeline of the battery pack; The controller is also in communication connection with the second water pump, the four-way control valve and the third water pump, and the controller is also used for: The operating mode of the electric drive battery series-parallel circuit is controlled according to different cooling and / or heat demand modes of the extended-range vehicle.

4. A thermal management control method for an extended-range vehicle, characterized in that: The thermal management system applied to the extended-range vehicle as claimed in any one of claims 1 to 3 comprises: Determine that the heat demand mode is heating and / or heating, and use range extender heat recovery; Control the first end of the temperature-controlled five-way valve and the fourth end of the temperature-controlled five-way valve to open, control the first end of the temperature-controlled five-way valve and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to open, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to open.

5. The method according to claim 4, characterized in that The method further includes: Determine the cooling mode as range extender cooling; The first end of the temperature control five-way valve and the third end of the temperature control five-way valve are controlled to be open, the first end of the temperature control five-way valve and the fourth end of the temperature control five-way valve are controlled to be open, and the first water pump is controlled to be turned on to achieve cooling of the range extender.

6. The method according to claim 4, characterized in that The method further includes: If it is determined that the cooling mode is battery cooling and / or passenger compartment cooling, the compressor is controlled to start, the electronic expansion valve is controlled to open, and the electronic valve is controlled to open.

7. The method according to claim 4, characterized in that The method further includes: If the cooling mode is determined to be battery cooling and / or electric drive cooling, the first end of the four-way control valve and the second end of the four-way control valve are controlled to be open, and the third end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open; or If the cooling mode is determined to be single-battery cooling, the second end of the four-way control valve and the third end of the four-way control valve are controlled to be open, the first end of the four-way control valve and the fourth end of the four-way control valve are controlled to be open, the second water pump is controlled to be opened, and the third water pump is controlled to be opened.

8. The method according to claim 4, characterized in that The method further includes: Determine that the heat demand mode is heating and / or heating, and use PTC heater for heating, then control the second end and the fifth end of the temperature-controlled five-way valve to open, control the first water pump to start, control the PTC heater to start, control the first end of the three-way proportional valve and the second end of the three-way proportional valve to open, control the first end of the three-way proportional valve and the third end of the three-way proportional valve to open, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, and control the third water pump to start.

9. The method according to any one of claims 4 to 8, characterized in that: The method further includes: Determine the coolant filling mode, control the first end of the temperature-controlled five-way valve and the fourth end of the temperature-controlled five-way valve to open at a first preset ratio, control the first end of the temperature-controlled five-way valve and the fifth end of the temperature-controlled five-way valve to open at the first preset ratio, control the first water pump to open at a first preset duty cycle, control the PTC heater to close, control the first end of the three-way proportional valve and the second end of the first end of the three-way proportional valve to open at the first preset ratio, control the first end of the three-way proportional valve and the second end of the third end of the three-way proportional valve to open at the first preset ratio, control the first end of the four-way control valve and the second end of the four-way control valve to open, control the third end of the four-way control valve and the fourth end of the four-way control valve to open, control the second water pump to open at a second preset duty cycle, and control the third water pump to open at the second preset duty cycle.

10. An extended-range vehicle, characterized in that: It comprises a thermal management system for an extended-range vehicle as described in any one of claims 1 to 3.

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