Vehicle integrated thermal management system and method and vehicle

Abstract

The invention discloses a vehicle integrated thermal management system and method and a vehicle, which are applied to the technical field of vehicle thermal management. The vehicle integrated heat management system comprises a waste heat recovery loop, a heating loop and a controller. The heating loop comprises a passenger compartment waste heat utilization loop and a battery waste heat utilization loop. The heating loop and the waste heat recovery loop can obtain waste heat of hydraulic oil in the hydraulic system through the oil-water plate heat exchanger. The controller determines a first circuit and a second circuit for operation based on a passenger compartment state and a battery state. By operating the waste heat recovery loop and the passenger compartment waste heat utilization loop or the waste heat recovery loop and the battery waste heat utilization loop, the passenger compartment or the battery included in the heating loop can obtain heat of the hydraulic system, so that the hydraulic system provides energy for the battery and the passenger compartment of the vehicle, and the operation resources of the whole vehicle heat management system are saved; the waste heat utilization efficiency of the hydraulic system is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a vehicle integrated thermal management system, method and vehicle. Background Art

[0002] The vehicle's thermal management system is used to control and regulate the heat in the vehicle. The thermal management system involves heat dissipation, cooling, heating, temperature control, and waste heat recovery. Among them, waste heat recovery is the key to fully utilizing resources.

[0003] At present, thermal management systems mainly recover waste heat from hydraulic systems. The hydraulic system of a vehicle is an engineering system in the vehicle that uses liquid (usually hydraulic oil) to transfer energy and perform mechanical operations. During the operation of the vehicle, the hydraulic oil carries the heat generated by mechanical energy conversion, friction heat, and heat generated by fluid friction. The heat of the hydraulic oil can be recovered as waste heat to provide energy to the heating equipment in the vehicle.

[0004] At present, the utilization efficiency of waste heat of hydraulic systems is low and cannot meet the demand for fully utilizing waste heat energy. Summary of the invention

[0005] In view of this, the present application provides a vehicle integrated thermal management system, method and vehicle, which can improve the waste heat utilization efficiency of the hydraulic system.

[0006] The technical solutions provided by this application are as follows:

[0007] In a first aspect, the present application provides a vehicle integrated thermal management system, the vehicle integrated thermal management system comprising a waste heat recovery circuit, a heating circuit, and a controller;

[0008] The waste heat recovery circuit includes an oil pump, a hydraulic system and an oil circuit of an oil-water plate heat exchanger connected in series; the hydraulic system is used to generate hydraulic oil with heat, and the oil pump is used to input the hydraulic oil into the oil circuit of the oil-water plate heat exchanger;

[0009] The heating circuit includes: a passenger compartment waste heat utilization circuit and a battery waste heat utilization circuit; the passenger compartment waste heat utilization circuit includes a coolant water circuit of the oil-water plate heat exchanger connected in series, a water heating core included in the passenger compartment air conditioner, and a circuit main water pump; the battery waste heat utilization circuit includes a coolant water circuit of the oil-water plate heat exchanger connected in series, a battery pack, and the circuit main water pump; the coolant water circuit is used to exchange heat with the oil circuit;

[0010] The controller is used to obtain the passenger compartment status of the vehicle, and determine the first circuit in the vehicle integrated thermal management system according to the passenger compartment status; obtain the battery status of the vehicle, and determine the second circuit in the vehicle integrated thermal management system according to the battery status; and control the operation of the first circuit and the second circuit.

[0011] In a possible implementation, the controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0012] If it is determined that the passenger compartment state is a passenger compartment waste heat utilization state, it is determined that the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit.

[0013] In a possible implementation, the controller is used to determine the second loop in the vehicle integrated thermal management system according to the battery state, including:

[0014] If it is determined that the battery state is a battery waste heat utilization state, it is determined that the second circuit includes the battery waste heat utilization circuit and the waste heat recovery circuit.

[0015] In a possible implementation, the passenger compartment waste heat utilization circuit further includes a heating system heater, and the heating system heater is used to heat the passenger compartment;

[0016] The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0017] If it is determined that the passenger compartment state is the passenger compartment heating state, the first circuit is determined to be the passenger compartment waste heat utilization circuit, or the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit.

[0018] In a possible implementation, the battery pack includes a heating film, and the heating film is used to heat the battery pack;

[0019] The controller is used to determine a second loop in the vehicle integrated thermal management system according to the battery state, including:

[0020] If it is determined that the battery state is the battery heating state, it is determined that the second circuit includes the heating film of the battery pack, or includes the waste heat recovery circuit, the battery waste heat utilization circuit and the heating film of the battery pack.

[0021] In a possible implementation, the vehicle integrated thermal management system further includes an air conditioning refrigeration circuit;

[0022] The air conditioning refrigeration circuit comprises a gas-liquid separator, a compressor, a condenser, a thermal expansion valve and an evaporator core connected in series, and the evaporator core belongs to the passenger compartment air conditioner; the air conditioning refrigeration circuit is used to cool the passenger compartment of the vehicle;

[0023] The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0024] If it is determined that the passenger compartment state is a passenger compartment cooling state, it is determined that the first circuit includes the air-conditioning refrigeration circuit.

[0025] In a possible implementation, the vehicle integrated thermal management system further includes a battery insulation circuit;

[0026] The battery insulation circuit includes a water cooling plate circuit, a battery refrigeration unit and a battery circuit water pump connected in series, and the battery insulation circuit is used to keep the battery pack warm;

[0027] The controller is used to determine a second loop in the vehicle integrated thermal management system according to the battery state, including:

[0028] If it is determined that the battery state is a battery heat preservation state, it is determined that the second circuit includes the battery heat preservation circuit.

[0029] In a possible implementation, the vehicle integrated thermal management system further includes a passenger compartment heating circuit;

[0030] The passenger compartment heating circuit includes the circuit main water pump, the heating system heater and the water heating core connected in series;

[0031] The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0032] If it is determined that the passenger compartment state is a passenger compartment heating state, it is determined that the first circuit includes the passenger compartment heating circuit.

[0033] In a second aspect, the present application provides a vehicle integrated thermal management method, the method being applied to a controller, the controller belonging to the vehicle integrated thermal management system described in the first aspect or any implementation of the first aspect;

[0034] Acquiring a passenger compartment state of a vehicle, and determining a first circuit in the vehicle integrated thermal management system according to the passenger compartment state;

[0035] Acquiring a battery status of the vehicle, and determining a second circuit in the vehicle integrated thermal management system according to the battery status;

[0036] The first loop and the second loop are controlled to operate.

[0037] In a third aspect, the present application provides a vehicle, characterized in that the vehicle includes the vehicle integrated thermal management system described in the first aspect or any implementation of the first aspect.

[0038] It can be seen that this application has the following beneficial effects:

[0039] The present application provides a vehicle integrated thermal management system, a vehicle integrated thermal management method and a vehicle. The vehicle integrated thermal management system includes a waste heat recovery circuit, a heating circuit and a controller. The heating circuit includes a passenger compartment waste heat utilization circuit and a battery waste heat utilization circuit. The heating circuit and the waste heat recovery circuit can obtain the waste heat of the hydraulic oil in the hydraulic system through an oil-water plate heat exchanger. The controller determines the first circuit and the second circuit to be operated based on the passenger compartment status and the battery status. By operating the waste heat recovery circuit and the passenger compartment waste heat utilization circuit, or the waste heat recovery circuit and the battery waste heat utilization circuit, the passenger compartment or the battery included in the heating circuit can obtain the heat of the hydraulic system, so that the hydraulic system provides energy for the battery and passenger compartment of the vehicle, saves resources for the operation of the thermal management system of the entire vehicle, and improves the utilization efficiency of the waste heat of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the structure of a vehicle integrated thermal management system provided in an embodiment of the present application;

[0041] Figure 2a-2c A schematic diagram of the structure of a vehicle integrated thermal management system provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of another vehicle integrated thermal management system provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of a process flow of a vehicle integrated thermal management method provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of a method for determining a passenger compartment state provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of another method for determining a battery status provided in an embodiment of the present application;

[0046] Figure 7-Figure 13 A schematic diagram of the loop operation provided in the embodiment of the present application;

[0047] Fig.14 A schematic diagram of a control method for a blower provided in an embodiment of the present application;

[0048] Fig.15 A schematic diagram of a control method of a mode damper provided in an embodiment of the present application;

[0049] Fig.16 A schematic diagram of a compressor control method provided in an embodiment of the present application;

[0050] Fig.17 A schematic diagram of a WPTC control method provided in an embodiment of the present application;

[0051] Fig.18 A schematic diagram of the structure of a vehicle integrated thermal management device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to facilitate the understanding and explanation of the technical solutions provided by the embodiments of the present application, the background technology of the present application will be described below.

[0053] Taking vehicles as an example, the waste heat recovery system for hydraulic systems currently includes hydraulic oil tanks, working devices, heat exchangers, heating equipment and other equipment. The hydraulic oil is circulated by a pump, and the waste heat of the hydraulic oil in the working device is transferred to the heating medium included in the heating equipment by using a heat exchanger. In this way, the waste heat of the hydraulic oil is used for heating, and energy is reused, which can improve the energy efficiency of construction machinery.

[0054] At present, the method of recovering waste heat from hydraulic systems cannot meet the requirements of vehicle thermal management systems to fully utilize waste heat and reduce resource costs.

[0055] Based on this, an embodiment of the present application provides a vehicle integrated thermal management system, method and vehicle. The vehicle integrated thermal management system includes a waste heat recovery circuit, a heating circuit and a controller. The heating circuit includes a passenger compartment waste heat utilization circuit and a battery waste heat utilization circuit. The heating circuit and the waste heat recovery circuit can obtain the waste heat of the hydraulic oil in the hydraulic system through an oil-water plate heat exchanger. The controller determines the first circuit and the second circuit to be operated based on the passenger compartment status and the battery status. By operating the waste heat recovery circuit and the passenger compartment waste heat utilization circuit, or the waste heat recovery circuit and the battery waste heat utilization circuit, the passenger compartment or battery included in the heating circuit can obtain heat from the hydraulic system, so that the hydraulic system provides energy for the battery and passenger compartment of the vehicle, saves resources for the operation of the thermal management system of the entire vehicle, and improves the utilization efficiency of the waste heat of the hydraulic system.

[0056] In order to facilitate understanding of the technical solution provided in the embodiment of the present application, the vehicle integrated thermal management system provided in the embodiment of the present application is described below with reference to the accompanying drawings.

[0057] See also Figure 1 As shown, this figure is a structural schematic diagram of a vehicle integrated thermal management system provided in an embodiment of the present application.

[0058] The vehicle integrated thermal management system 100 includes a waste heat recovery circuit 110 , a heating circuit 120 and a controller 130 .

[0059] The waste heat recovery circuit 110 includes an oil pump 1, a hydraulic system 2, and an oil circuit of an oil-water plate heat exchanger 3. The oil circuits of the oil pump 1, the hydraulic system 2, and the oil-water plate heat exchanger 3 are connected in series.

[0060] The hydraulic system 2 is used to generate hydraulic oil with heat. The oil pump 1 is used to input the hydraulic oil into the oil circuit of the oil-water plate heat exchanger 3 along the loop. The oil-water plate heat exchanger 3 also includes a coolant water circuit belonging to the heating circuit 120. Through the oil-water plate heat exchanger 3, the heat of the hydraulic oil in the oil circuit is transferred to the coolant in the coolant water circuit, and the heat of the hydraulic system 2 can be transferred to the heating circuit 120, so that the heat can be fully utilized through the heating circuit 120, and efficient waste heat utilization of the hydraulic system 2 can be achieved.

[0061] In some possible implementations, the waste heat recovery circuit 110 further includes an oil circuit low-temperature radiator 4. The oil circuit low-temperature radiator 4 is used for heat dissipation of hydraulic oil.

[0062] The heating circuit 120 includes a passenger compartment waste heat utilization circuit 121 and a battery waste heat utilization circuit 122 .

[0063] The passenger compartment waste heat utilization circuit 121 includes a coolant water circuit of an oil-water plate heat exchanger 3 connected in series, a water heater core 10 included in the passenger compartment air conditioner, and a circuit main water pump 15 .

[0064] The circuit main water pump 15 is used to circulate the coolant along the circuit.

[0065] The water-heating core 10 belongs to the passenger compartment air conditioner and constitutes the core assembly of the passenger compartment air conditioner. In addition to the core assembly, the passenger compartment air conditioner also includes a fan 12 of the Heating, Ventilation and Air-Conditioning (HVAC) system. HVAC is used for heating, ventilation and air conditioning. HVAC is a system with heating, ventilation and air conditioning functions installed under the dashboard of the car in the passenger compartment. It includes components such as a blower assembly, a core assembly, a mixing damper and a mode damper, which can provide a comfortable riding environment for passengers in the car and ensure the air quality in the car.

[0066] Furthermore, the passenger compartment waste heat utilization circuit 121 further includes a heating system heater 11. The heating system heater 11 is used to heat the passenger compartment.

[0067] The heating system heater 11 is, for example, a water-driven positive temperature coefficient thermistor heating system (WPTC) heater. WPTC uses electric heating technology to transfer heat to the heater core in the air conditioner in the form of heated coolant, thereby heating the air in the passenger compartment and achieving heating of the passenger compartment. The resistance value of the thermistor of WPTC will increase in a step-by-step manner as the temperature rises.

[0068] The battery waste heat utilization circuit 122 includes a coolant water circuit of an oil-water plate heat exchanger 3 connected in series, a battery pack 8 and a circuit main water pump 15 .

[0069] Furthermore, the battery pack 8 includes a heating film, which is used to heat the battery pack 8 .

[0070] In another possible implementation, the vehicle integrated thermal management system further includes an air conditioning refrigeration circuit 140. Figure 2a As shown, the air conditioning refrigeration circuit 140 includes a gas-liquid separator 17, a compressor 18, a condenser 19, a thermal expansion valve 20 and an evaporator core 16 connected in series. The evaporator core 16 belongs to the passenger compartment air conditioning. The air conditioning refrigeration circuit 140 is used to cool the passenger compartment of the vehicle.

[0071] In another possible implementation, the vehicle integrated thermal management system further includes a battery insulation circuit 150. Figure 2b As shown, the battery insulation circuit 150 includes a water cooling plate circuit, a battery refrigeration unit 13 and a battery circuit water pump 14 connected in series with the battery pack 8. The battery insulation circuit 150 is used to keep the battery pack 8 warm or cool. The battery circuit water pump 14 is used to circulate the coolant along the battery insulation circuit 150. The battery refrigeration unit 13 is used to cool the coolant. The water cooling plate circuit is used to absorb the heat of the battery pack 8.

[0072] In another possible implementation, the vehicle integrated thermal management system further includes a passenger compartment heating circuit 160. Figure 2c As shown, the passenger compartment heating circuit 160 includes a circuit main water pump 15, a heating system heater 11 and a water heating core 10 connected in series. The passenger compartment heating circuit 160 is used to heat the passenger compartment.

[0073] As an example, the heating circuit 120, the battery heat preservation circuit 150 and the passenger compartment heating circuit 160 included in the vehicle integrated thermal management system are integrated through a control valve, which is, for example, a three-way valve.

[0074] See also Figure 3 As shown, this figure is a structural schematic diagram of a vehicle integrated thermal management system provided in an embodiment of the present application. Figure 3 The controller 130 is not shown.

[0075] End C of the first three-way valve 5, ends B and C of the second three-way valve 6, ends B and C of the third three-way valve 7, the battery refrigeration unit 13, the battery circuit water pump 14, ends B and C of the fourth three-way valve 9, the circuit main water pump 15 and end A of the first three-way valve 5 are connected in series.

[0076] The two ends of the coolant water circuit of the oil-water plate heat exchanger 3 are respectively connected to the B end of the first three-way valve 5 and the first end of the loop main water pump 15. The first end of the loop main water pump 15 is a port connected to the A end of the first three-way valve 5. The heating system heater 11 and the water heating core 10 are connected in series. The other end of the heating system heater 11 is connected to the A end of the second three-way valve 6. The other end of the water heating core 10 is connected to the second end of the loop main water pump 15. The second end of the loop main water pump 15 is a port connected to the C end of the fourth three-way valve 9. The battery pack 8 (including the water cooling plate loop) is respectively connected to the A end of the third three-way valve 7 and the A end of the fourth three-way valve 9.

[0077] Different circuits have corresponding functions. The controller realizes different functions of the vehicle integrated thermal management system by controlling the operation of different circuits.

[0078] The controller 130 is, for example, an electronic control unit (ECU) or a separate control module.

[0079] See also Figure 4 As shown, this figure is a schematic flow chart of a vehicle integrated thermal management method provided in an embodiment of the present application, including S401-S403:

[0080] S401: The controller obtains the state of the passenger compartment of the vehicle, and determines the first circuit in the vehicle integrated thermal management system according to the state of the passenger compartment.

[0081] The passenger cabin state is a temperature state determined based on demand of the passenger cabin.

[0082] For the vehicle integrated thermal management system including the waste heat recovery circuit 110 and the heating circuit 120, the passenger compartment state includes the passenger compartment waste heat utilization state and the passenger compartment closed state. The passenger compartment waste heat utilization state refers to the state in which the passenger compartment obtains heat from the hydraulic system 2. The passenger compartment closed state refers to the state in which the passengers have no demand for the temperature of the passenger compartment, that is, the state in which the temperature adjustment is not required.

[0083] For a vehicle integrated thermal management system including a heating system heater 11 or a passenger compartment heating circuit 160, the passenger compartment state also includes a passenger compartment heating state. The passenger compartment heating state refers to a state in which the passenger compartment needs to be heated, that is, a state in which a passenger needs to turn on the air conditioner or a heating device needs to increase the temperature.

[0084] For a vehicle integrated thermal management system including a passenger compartment cooling circuit, the passenger compartment state also includes a passenger compartment cooling state. The passenger compartment cooling state refers to a state in which the passenger compartment needs to be cooled, that is, a state in which the passenger needs to turn on the air conditioner to lower the temperature.

[0085] The following introduces possible implementation methods for the controller to obtain the passenger compartment status.

[0086] In one possible implementation, the passenger compartment status is determined by other modules connected to the controller and sent to the controller 130 .

[0087] In another possible implementation, the controller 130 determines the state of the passenger compartment. As an example, the controller 130 obtains the historical state of the passenger compartment, obtains the vehicle operating parameters and / or the user request. The historical state of the passenger compartment is the state of the passenger compartment at a historical moment. The historical state of the passenger compartment may be the state of the passenger compartment in the last state judgment cycle. The vehicle operating parameters are the parameters involved in the vehicle operation process. The user request is a request related to the passenger compartment state triggered by the vehicle user such as the driver and the passenger. The controller 130 determines the state of the passenger compartment based on one or more of the vehicle operating parameters and the user request, as well as the historical state of the passenger compartment.

[0088] As an example, the conditions for determining the state of the passenger compartment are preset. Figure 5 As shown, this figure is a schematic diagram of a method for determining the state of a passenger compartment provided in an embodiment of the present application.

[0089] Taking the passenger compartment state including four states as an example, the method of determining the passenger compartment state involves four groups of conditions.

[0090] The first group of conditions: switching conditions between the passenger compartment closed state and the passenger compartment waste heat utilization state.

[0091] The determination condition 1 for switching from the passenger compartment closed state to the passenger compartment residual heat utilization state is that any one of the following is satisfied:

[0092] The vehicle high pressure state is turned off; the compressor 18 high pressure state is turned off; the WPTC high pressure state is turned off; the system shuts down; a user request to turn off the cooling is obtained through the human machine interface (HMI); the temperature inside the vehicle is greater than the sum of the user set temperature and the first temperature threshold; the vehicle's battery state of charge (SOC) is less than the preset power; a request to turn on the cooling is obtained through the HMI.

[0093] The determination condition 2 for switching the passenger compartment waste heat utilization state to the passenger compartment closed state is that each of the following items is satisfied:

[0094] Obtain a request to start heating through the HMI; the temperature inside the vehicle is less than the difference between the user-set temperature and the second temperature threshold; the vehicle high-pressure state is turned on; the compressor 18 high-pressure state is turned on; the WPTC high-pressure state is turned on; the system has no shutdown failure; the SOC of the vehicle's battery is greater than the preset power; the plate oil temperature is greater than the third temperature threshold; the first actuator is in the closed state. The first actuator includes a heating system heater 11, a battery circuit water pump 14, a circuit main water pump 15, an HVAC fan, an HVAC mode damper actuator, and an HVAC fresh air damper actuator. The first actuator is in the closed state, indicating that the heating circuit 120 is not running.

[0095] The second group of conditions: the switching conditions between the passenger compartment waste heat utilization state and the passenger compartment heating state.

[0096] The determination condition 3 for switching the passenger compartment heating state to the passenger compartment waste heat utilization state is that each of the following items is satisfied:

[0097] The plate-change oil inlet temperature is greater than the third temperature threshold; the plate-change oil inlet temperature is greater than the sum of the water temperature after WPTC and the fourth temperature threshold.

[0098] The determination condition 4 for switching the passenger compartment waste heat utilization state to the passenger compartment heating state is that any one of the following is satisfied:

[0099] The plate change oil inlet temperature is lower than the third temperature threshold; the plate change oil inlet temperature is lower than the water temperature after WPTC.

[0100] The third group of conditions: the switching conditions between the passenger compartment closing state and the passenger compartment heating state.

[0101] The determination condition 5 for switching from the passenger compartment closing state to the passenger compartment heating state is that each of the following items is satisfied:

[0102] Obtain a heating start request through the HMI; the temperature inside the vehicle is less than the difference between the user-set temperature and the second temperature threshold; the WPTC control instruction is turned on; the vehicle high-pressure state is turned on; the compressor 18 high-pressure state is turned on; the WPTC high-pressure state is turned on; the system has no shutdown fault; the SOC is greater than the preset power; the plate oil inlet temperature is less than the third temperature threshold; the first actuator is in the closed state. The first actuator is in the closed state, indicating that the heating circuit 120 is not running.

[0103] The determination condition 6 for switching the passenger compartment heating state to the passenger compartment closing state is that any one of the following is satisfied:

[0104] The vehicle high-pressure state is turned off; the compressor 18 high-pressure state is turned off; the WPTC high-pressure state is turned off; the system shuts down fault; a heating shutdown request is obtained through the HMI; the temperature inside the vehicle is greater than the sum of the user-set temperature and the first temperature threshold; the WPTC control instruction is turned off; the SOC is less than the preset power; a cooling start request is obtained through the HMI.

[0105] The fourth group of conditions: the switching conditions between the passenger compartment closed state and the passenger compartment cooling state.

[0106] The determination condition 7 for switching from the passenger compartment closed state to the passenger compartment cooling state is that each of the following items is satisfied:

[0107] Get the request to start cooling through HMI; the temperature inside the vehicle is greater than the sum of the user-set temperature and the first temperature threshold; the high-pressure state of the whole vehicle is turned on; the high-pressure state of compressor 18 is turned on; the WPTC high-pressure state is turned on; the compressor 18 shutdown request is turned off; the system has no shutdown fault; the SOC is greater than the preset power; the first actuator is in the off state.

[0108] The determination condition 8 for switching the passenger compartment cooling state to the passenger compartment closing state is that any one of the following is satisfied:

[0109] The vehicle high-pressure state is turned off; the compressor 18 high-pressure state is turned off; the WPTC high-pressure state is turned off; the system shuts down; the HMI cooling request is turned off; the temperature inside the vehicle is less than the difference between the user-set temperature and the second temperature threshold; the compressor 18 is turned off and requested to be turned on; the SOC is less than the preset power; a request to turn on heating is obtained through the HMI.

[0110] The controller determines a first loop in the vehicle integrated thermal management system according to a passenger compartment state.

[0111] As examples, embodiments of the present application provide four possible implementations of determining the first loop in the vehicle integrated thermal management system according to the passenger compartment state.

[0112] The first type: for a vehicle integrated thermal management system including a waste heat recovery circuit 110 and a heating circuit 120 , if the controller determines that the passenger compartment state is a passenger compartment waste heat utilization state, the first circuit is determined to include a passenger compartment waste heat utilization circuit 121 and a waste heat recovery circuit 110 .

[0113] The second type: a vehicle integrated thermal management system including a passenger compartment waste heat utilization circuit 121 including a heating system heater 11 , or including a passenger compartment heating circuit 160 .

[0114] If the controller determines that the passenger compartment state is the passenger compartment heating state, the controller determines that the first circuit is the passenger compartment waste heat utilization circuit 121 including the heating system heater 11 , or determines that the first circuit includes the passenger compartment heating circuit 160 .

[0115] The third type: for vehicle integrated thermal management systems including passenger compartment refrigeration circuits.

[0116] If the controller determines that the passenger compartment state is the passenger compartment cooling state, it determines that the first circuit includes the air conditioning refrigeration circuit 140 .

[0117] The fourth type: for any vehicle integrated thermal management system.

[0118] If the controller determines that the passenger compartment state is the passenger compartment closed state, it determines that the first circuit is empty, that is, the passenger compartment waste heat utilization circuit 121, the passenger compartment heating circuit 160 and the air conditioning refrigeration circuit 140 are not running.

[0119] S402: The controller obtains the battery status of the vehicle and determines the second circuit in the vehicle integrated thermal management system according to the battery status.

[0120] The battery status is the temperature status of the battery.

[0121] For a vehicle integrated thermal management system including a waste heat recovery circuit 110 and a heating circuit 120, the battery state includes a battery waste heat utilization state and a battery shutdown state. The battery waste heat utilization state refers to a state in which the battery pack 8 obtains heat from the hydraulic system 2. The battery shutdown state refers to a state in which the battery is shut down.

[0122] For a vehicle integrated thermal management system in which the battery pack 8 includes a heating film, the battery state also includes a battery heating state. The battery heating state refers to a state in which the battery needs to be heated.

[0123] For a vehicle integrated thermal management system including the battery heat preservation circuit 150, the battery state also includes a battery heat preservation state. The battery heat preservation state refers to a state where the battery temperature needs to be maintained.

[0124] The passenger compartment state and the battery state are determined independently of each other. The following is an introduction to possible implementations of the controller obtaining the battery state.

[0125] In one possible implementation, the battery status is determined by other modules connected to the controller and sent to the controller 130 .

[0126] In another possible implementation, the controller 130 determines the battery status. As an example, the controller 130 obtains the battery history status, obtains the vehicle operation parameters and / or the user request. The battery history status is the battery status at a historical moment. The battery history status may be the battery status in the last status judgment cycle. The vehicle operation parameters are the parameters involved in the vehicle operation process. The user request is a request related to the battery status triggered by the vehicle user such as the driver and the passenger. The controller 130 determines the battery status based on one or more of the vehicle operation parameters and the user request, as well as the battery history status.

[0127] As an example, the conditions for determining the battery status are preset. Figure 6 As shown, this figure is a schematic diagram of another method for determining the battery status provided in an embodiment of the present application.

[0128] Taking the battery status including four states as an example, the method of determining the battery status involves five groups of conditions.

[0129] The first set of conditions: switching conditions between the battery heating state and the battery shutoff state.

[0130] The determination condition 9 for switching the battery heating state to the battery off state is that any one of the following is satisfied:

[0131] The vehicle high-pressure state is shut down; the compressor 18 high-pressure state is shut down; the WPTC high-pressure state is shut down; the system shuts down; the SOC is less than the preset power.

[0132] The determination condition 10 for switching the battery off state to the battery heating state is that each of the following items is satisfied:

[0133] The vehicle high-pressure state is turned on; the compressor 18 high-pressure state is turned on; the WPTC high-pressure state is turned on; the system has no shutdown failure; the SOC is greater than the preset power; the first actuator is in the closed state; the minimum battery temperature is less than the fifth temperature threshold and the maximum battery temperature is less than the sixth temperature threshold, or the plate oil inlet temperature is less than the third temperature threshold and the minimum battery temperature is greater than the fifth temperature threshold.

[0134] The second group of conditions: switching conditions between the battery heating state and the battery waste heat utilization state.

[0135] The determination condition 11 for switching the battery residual heat utilization state to the battery heating state is that any one of the following is satisfied:

[0136] The minimum battery temperature is less than the fifth temperature threshold, and the maximum battery temperature is less than the sixth temperature threshold; the board oil inlet temperature is less than the third temperature threshold; the board oil inlet temperature is less than the battery water inlet temperature.

[0137] The determination condition 12 for switching the battery heating state to the battery residual heat utilization state is that each of the following items is satisfied:

[0138] The minimum battery temperature is greater than the fifth temperature threshold, or the maximum battery temperature is greater than the sixth temperature threshold; the board oil inlet temperature is greater than the third temperature threshold; the board oil inlet temperature is greater than the sum of the battery water inlet temperature and the seventh temperature threshold.

[0139] The third group of conditions: switching conditions between the battery off state and the battery residual heat utilization state.

[0140] The determination condition 13 for switching the battery residual heat utilization state to the battery shutdown state is that any one of the following is satisfied:

[0141] The vehicle high-pressure state is shut down; the compressor 18 high-pressure state is shut down; the WPTC high-pressure state is shut down; the system shuts down; the SOC is less than the preset power.

[0142] The determination condition 14 for switching from the battery off state to the battery residual heat utilization state is that any one of the following is satisfied:

[0143] The vehicle high-pressure state is turned on; the compressor 18 high-pressure state is turned on; the WPTC high-pressure state is turned on; the system has no shutdown failure; the SOC is greater than the preset power; the first actuator is in the closed state; the minimum battery temperature is less than the fifth temperature threshold; the plate oil inlet temperature is greater than the third temperature threshold.

[0144] The fourth group of conditions: switching conditions between the battery heat preservation state and the battery waste heat utilization state.

[0145] The determination condition 15 for switching the battery waste heat utilization state to the battery heat preservation state is that each of the following items is satisfied:

[0146] The minimum battery temperature is less than the fifth temperature threshold; the battery water inlet temperature is greater than the eighth temperature threshold.

[0147] The fifth group of conditions: the switching conditions between the battery warm-keeping state and the battery off state.

[0148] The determination condition 16 for switching the battery warm keeping state to the battery shut down state is that any one of the following is satisfied:

[0149] The vehicle high-pressure state is shut down; the compressor 18 high-pressure state is shut down; the WPTC high-pressure state is shut down; the system shuts down; the SOC is less than the preset power; the minimum battery temperature is greater than the fifth temperature threshold.

[0150] It should be noted that the request obtained by the HMI in the above conditions is a user request, and other parameters required to determine whether the conditions are met are vehicle operation parameters. In addition, the thresholds of the parameters involved in different conditions can be the same value or different values, which is not limited in the embodiments of the present application.

[0151] The controller determines a second loop in the vehicle integrated thermal management system according to the battery status.

[0152] As examples, the embodiments of the present application provide four possible implementations of determining the second loop in the vehicle integrated thermal management system according to the battery status.

[0153] The first one is a vehicle integrated thermal management system including a waste heat recovery circuit 110 and a heating circuit 120 .

[0154] If the controller determines that the battery state is in the battery waste heat utilization state, it determines that the second circuit includes the battery waste heat utilization circuit 122 and the waste heat recovery circuit 110 .

[0155] The second type: a vehicle integrated thermal management system including a heating film for the battery pack 8 .

[0156] If the controller determines that the battery state is a battery heating state, it determines that the second circuit includes the heating film included in the battery pack 8 , or the second circuit includes the heating film included in the battery pack 8 , the battery waste heat utilization circuit 122 and the waste heat recovery circuit 110 .

[0157] The third type: for a vehicle integrated thermal management system including a battery insulation circuit 150 .

[0158] If the controller determines that the battery state is the battery heat preservation state, it determines that the second circuit includes the battery heat preservation circuit 150 .

[0159] The fourth type: for any vehicle integrated thermal management system.

[0160] If the controller determines that the battery state is the battery off state, it determines that the second circuit is empty, that is, the battery waste heat utilization circuit 122, the heating film of the battery pack 8 and the battery insulation circuit 150 are not running.

[0161] S403: The controller controls the first loop and the second loop to operate.

[0162] By controlling the operation of the first and second circuits, the needs of the passenger compartment and the battery are met. The status of the passenger compartment and the battery are independent of each other.

[0163] Based on the above S401-S403 related contents, it can be known that the vehicle integrated thermal management system transfers the waste heat of the hydraulic system 2 to the passenger compartment and the battery through the waste heat recovery circuit 110, the passenger compartment waste heat utilization circuit 121 and the battery waste heat utilization circuit 122, supplies energy to the passenger compartment and the battery, realizes efficient recovery of the waste heat of the hydraulic oil, provides heating for the battery, ensures that the battery performance is in the optimal temperature range, and also increases the heating function of the passenger compartment to create a comfortable and pleasant driving environment.

[0164] The energy used for heating the heating film and the heating system heater 11 accounts for a high proportion of the thermal management system of the construction machinery vehicle, which can reach more than 70%. The heat of the hydraulic oil is used to heat the battery and the passenger compartment, which saves the energy consumption of the vehicle thermal management system while ensuring that the battery operates in a suitable temperature range and the comfort of the passenger compartment, which helps to improve the vehicle's endurance and enhance the user experience.

[0165] Furthermore, for a vehicle integrated thermal management system that also includes a battery insulation circuit 150, or an air-conditioning refrigeration circuit 140, or a passenger compartment heating circuit 160, the controller can switch and control the circuits of the vehicle integrated thermal management system according to the specific needs of the battery pack and the passenger compartment, and can form a combination of multiple states to meet the various needs of the battery pack and the passenger compartment.

[0166] The passenger compartment status can be flexibly switched between cooling, heating, waste heat recovery and off, and the battery can be switched between heating, waste heat recovery and insulation, and off. This enables the free combination of the passenger compartment status and the battery status under the same vehicle integrated thermal management system architecture, and can cope with a variety of complex working conditions.

[0167] Each circuit in the vehicle's integrated thermal management system is independently cooled, and the controller can accurately control the temperature of the passenger compartment and the battery to ensure efficient and stable operation. The precise switching of the controller ensures seamless switching between different states and achieves efficient switching.

[0168] With the above Figure 3 The vehicle integrated thermal management system shown involves four passenger compartment states and four battery states as an example. The combination of passenger compartment states and battery states can be seen in Table 1.

[0169] Table 1

[0170]

[0171] As some examples, the embodiments of the present application provide nine possible implementation scenarios.

[0172] The first implementation scenario: the passenger compartment is in cooling state and the battery is in heat preservation state.

[0173] The first circuit and the second circuit corresponding to the first implementation scenario include a waste heat recovery circuit 110, a battery heat preservation circuit 150 and an air conditioning refrigeration circuit 140. Figure 7 As shown in the figure, the black circuit represents the running circuit, and the gray circuit represents the non-running circuit.

[0174] The controller 130 controls the operation of the first loop and the second loop corresponding to the first implementation scenario.

[0175] Specifically, the controller 130 controls the operation of the waste heat recovery circuit 110. At this time, the oil circuit of the oil-water plate heat exchanger 3 does not exchange heat with the water circuit. The heat of the hydraulic system 2 is dissipated to the environment through the oil circuit low-temperature radiator 4.

[0176] The controller 130 controls the operation of the air conditioning refrigeration circuit 140. The passenger compartment air conditioning performs a refrigeration cycle, and the circulation order of the coolant in the air conditioning refrigeration circuit 140 is the compressor 18, the condenser 19, the thermal expansion valve 20, the evaporator core 16 and the gas-liquid separator 17.

[0177] For the heating circuit 120, the controller 130 controls the A and B ends of the second three-way valve 6 to be fully open, and the C end to be fully closed; controls the A and C ends of the third three-way valve 7 to be fully open, and the B end to be fully closed; controls the A and B ends of the fourth three-way valve 9 to be fully open, and the C end to be fully closed; controls the A and C ends of the first three-way valve 5 to be fully open, and the B end to be fully closed. In this way, the switching between the battery insulation circuit 150 and the passenger compartment heating circuit 160 is realized.

[0178] In addition, the controller controls the loop main water pump 15 and the heating system heater 11 to be in the off state; and controls the passenger compartment air conditioning to operate. In this way, although the three-way valve is controlled to form the passenger compartment heating loop 160, since the heating system heater 11 and the loop main water pump 15 are turned off, the passenger compartment heating loop 160 does not operate and does not provide heat to the passenger compartment.

[0179] The controller starts the water cooling plate circuit circulation of the battery pack 8 , starts the battery circuit water pump 14 according to the flow requirement, implements the operation of the battery insulation circuit 150 , and keeps the battery pack 8 warm.

[0180] Second: The second implementation scenario.

[0181] The second implementation scenario includes the passenger compartment cooling state and the battery waste heat utilization state.

[0182] The first and second target circuits corresponding to the second implementation scenario include a waste heat recovery circuit 110, a battery waste heat utilization circuit 122, and an air conditioning refrigeration circuit 140. The first and second target circuits corresponding to the second implementation scenario refer to Figure 8 shown.

[0183] The controller 130 controls the operation of the first circuit and the second circuit corresponding to the second implementation scenario. Specifically, the controller 130 controls the operation of the waste heat recovery circuit 110, the battery waste heat utilization circuit 122 and the air conditioning refrigeration circuit 140.

[0184] For the heating circuit 120, the controller 130 controls the second three-way valve 6 so that the B and C ends are fully open, and the A end is fully closed; controls the third three-way valve 7 so that the A and B ends are fully open, and the C end is fully closed; controls the fourth three-way valve 9 so that the A and C ends are fully open, and the B end is fully closed; controls the B and C ends of the first three-way valve 5 to be fully open, and the A end is fully closed; controls the loop main water pump 15 and the heating system heater 11 to be in the off state, starts the water cooling plate loop circulation of the battery pack 8, and starts the battery loop water pump 14 according to the flow requirement.

[0185] It should be noted that the first and second implementation scenarios belong to the system cooling state. The following third to seventh implementation scenarios belong to the system heating state. In the system heating state, the first circuit and the second circuit are operated differently according to the different heat of the hydraulic oil and the temperature of the battery cell.

[0186] The third implementation scenario.

[0187] The third implementation scenario includes the passenger compartment heating state and the battery heating state.

[0188] The first circuit and the second circuit corresponding to the third implementation scenario include the passenger compartment heating circuit 160 and the heating film of the battery pack 8. The first circuit and the second circuit corresponding to the third implementation scenario refer to Fig. 9 shown.

[0189] When the hydraulic system 2 is not in a high heat-generating working cycle and the battery cell temperature is low, the heating system heater 11 and the battery heating film need to be heated, the passenger compartment is self-circulating, and the battery water circuit is not circulating, that is, the passenger compartment is heated and the battery is heated. The third implementation scenario occurs when the vehicle is started or the hydraulic system 2 is not working.

[0190] The controller 130 controls the operation of the first circuit and the second circuit corresponding to the third implementation scenario. Specifically, the controller 130 controls the A and C ends of the first three-way valve 5 to be opened, and the B end to be closed; and controls the A and B ends of the second three-way valve 6 to be opened, and the C end to be closed. The controller 130 controls the operation of the heating system heater 11 and the heating film of the battery to heat the passenger compartment and the battery respectively.

[0191] Fourth: The fourth implementation scenario.

[0192] The fourth implementation scenario includes the passenger compartment waste heat utilization state and the battery shutdown state.

[0193] The first circuit and the second circuit corresponding to the fourth implementation scenario include a passenger compartment waste heat utilization circuit 121. The first circuit and the second circuit corresponding to the fourth implementation scenario refer to Fig.10 shown.

[0194] When the hydraulic system 2 begins to enter the heat generation stage and the passenger compartment has a heating demand, the passenger compartment waste heat utilization circuit 121 can be operated to provide waste heat of the hydraulic system 2 to the passenger compartment.

[0195] The controller 130 controls the operation of the first loop and the second loop corresponding to the fourth implementation scenario. Specifically, the controller 130 controls the operation of the waste heat recovery loop 110.

[0196] The controller 130 controls the B and C ends of the first three-way valve 5 to open, and the A end to close; controls the A and B ends of the second three-way valve 6 to open, and the C end to close; controls the oil-water plate heat exchanger 3 to open, and exchanges heat between the oil circuit and the water circuit, so as to transfer the heat of the hydraulic oil in the oil circuit to the coolant in the water circuit, and transfer the waste heat of the hydraulic system 2 to the heating circuit 120, so that the passenger compartment can fully utilize the waste heat of the hydraulic system 2; controls the operation of the circuit main water pump 15 to realize the circulation of the coolant in the cabin waste heat utilization circuit.

[0197] Fifth: The fifth implementation scenario.

[0198] The fifth implementation scenario includes the passenger compartment waste heat utilization state and the battery waste heat utilization state.

[0199] The first circuit and the second circuit corresponding to the fifth implementation scenario include a waste heat recovery circuit 110, a passenger compartment waste heat utilization circuit 121 and a battery waste heat utilization circuit 122, see Fig.11 shown.

[0200] When the hydraulic system 2 is in a high heat generation stage, the heat of the waste heat recovery circuit 110 is high, the passenger compartment has a heating demand, and the battery pack 8 has a low temperature and has a heating demand, the waste heat of the hydraulic system 2 is used to heat the passenger compartment and the battery pack 8, corresponding to the passenger compartment waste heat utilization state and the battery waste heat utilization state.

[0201] The controller 130 controls the operation of the first loop and the second loop corresponding to the fifth implementation scenario. The controller 130 controls the operation of the waste heat recovery loop 110.

[0202] For the heating circuit 120, the controller 130 controls the first three-way valve 5B and C ends to open, and the A end to close; controls the second three-way valve 6B end to open completely, and the A end and the C end to open in a certain ratio; controls the third three-way valve 7B end and the A end to open, and the C end to close; controls the fourth three-way valve 9B end and the A end to open, and the C end to close; controls the oil-water plate heat exchanger 3 to open; and controls the main water pump 15 of the circuit to open. In this way, the water circuit of the oil-water plate heat exchanger 3 participates in the heat exchange process, and the heat of the hydraulic oil in the oil circuit is transferred to the water circuit. The cabin waste heat utilization circuit and the battery waste heat utilization circuit 122 are in parallel. The ratio of the coolant flow of the cabin waste heat utilization circuit and the battery waste heat utilization circuit 122 is determined by the ratio of the opening degree of the second three-way valve 6A end and the opening degree of the C end.

[0203] The energy of the waste heat recovered from the hydraulic system 2 can provide heat to the battery pack 8 and the passenger compartment, and can meet the requirements of the temperature rise rate of the battery pack 8 and the heating requirements of the passenger compartment. The controller controls the heating film of the battery to be in a closed state, and the battery pack 8 can operate normally relying on the waste heat recovered by the hydraulic system 2. The controller controls the heating system heater 11 to be turned off, so as to use the waste heat of the hydraulic system 2 to provide heat to the passenger compartment and meet the energy requirements of the passenger compartment. In this way, the electric heating energy can be saved to the greatest extent, and the waste heat of the hydraulic system can be fully utilized, thereby saving the energy consumption of the whole vehicle, fully utilizing resources, and increasing the vehicle's operating time.

[0204] In a possible implementation, when the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold, the energy of the waste heat recovered by the hydraulic system 2 may be difficult to meet the heating demand of the passenger compartment. The controller 130 controls the operation of the heating system heater 11 to achieve self-heating of the passenger compartment. This corresponds to the passenger compartment heating state and the battery waste heat utilization state.

[0205] Sixth: The sixth implementation scenario.

[0206] The sixth implementation scenario includes the passenger compartment waste heat utilization state and the battery insulation state.

[0207] The first circuit and the second circuit corresponding to the sixth implementation scenario include a waste heat recovery circuit 110, a passenger compartment waste heat utilization circuit 121 and a battery insulation circuit 150, see Fig.12 shown.

[0208] When the hydraulic system 2 is in a high heat generation stage, the heat of the waste heat recovery circuit 110 is relatively high, the passenger compartment has a heating demand and the temperature of the battery pack 8 reaches the self-circulation insulation demand, corresponding to the passenger compartment waste heat utilization state and the battery insulation state.

[0209] The controller 130 controls the operation of the first loop and the second loop corresponding to the sixth implementation scenario.

[0210] Specifically, the controller 130 controls the operation of the waste heat recovery circuit 110. For the heating circuit 120, the controller 130 controls the first three-way valve 5 to open at the B end and the C end, and close at the A end; controls the second three-way valve 6 to open at the A end and the B end, and close at the C end; controls the third three-way valve 7 to open at the A end and the C end, and close at the B end; controls the fourth three-way valve 9 to open at the A end and the B end, and close at the C end; controls the oil-water plate heat exchanger 3 to open; controls the circuit main water pump 15 to open; controls the battery water circuit to operate in a heat preservation state; and controls the heating system heater 11 to close.

[0211] Seventh: The seventh implementation scenario.

[0212] The seventh implementation scenario includes the passenger compartment closed state and the battery waste heat utilization state. The first circuit and the second circuit corresponding to the seventh implementation scenario include the waste heat recovery circuit 110 and the battery waste heat utilization circuit 122, see Fig.13 shown.

[0213] When the hydraulic system 2 is in a high heat generation stage, the heat of the waste heat recovery circuit 110 is relatively high, the passenger compartment has no heating demand and the battery pack 8 has a heating demand, corresponding to the passenger compartment closed state and the battery waste heat utilization state.

[0214] The controller 130 controls the operation of the first loop and the second loop corresponding to the seventh implementation scenario.

[0215] Specifically, the controller 130 controls the operation of the waste heat recovery circuit 110. For the heating circuit 120, the controller 130 controls the first three-way valve 5 to open the B and C ends, and close the A end; controls the second three-way valve 6 to open the B and C ends, and close the A end; controls the third three-way valve 7 to open the A and B ends, and close the C end; controls the fourth three-way valve 9 to open the A and C ends, and close the B end; controls the oil-water plate heat exchanger 3 to open; and controls the circuit main water pump 15 to open.

[0216] In addition, in some possible implementations, when the temperature of the hydraulic oil is lower than the hydraulic oil temperature threshold, the controller 130 controls the battery heating film to turn on, corresponding to the battery heating state. Eighth: The eighth implementation scenario.

[0217] The eighth implementation scenario includes a passenger compartment closed state and a battery heat preservation state. The first circuit and the second circuit corresponding to the eighth implementation scenario include a battery heat preservation circuit 150 .

[0218] Ninth: The ninth implementation scenario.

[0219] The ninth implementation scenario includes a passenger compartment closed state and a battery closed state. In the ninth implementation scenario, the waste heat recovery circuit 110, the heating circuit 120 and the air conditioning refrigeration circuit 140 stop running.

[0220] In addition, some actuators included in the vehicle integrated thermal management system 100 can be adaptively adjusted based on user input requests. As an example, the embodiment of the present application provides an adjustment method of the controller 130 for the blower, the mode damper, the compressor 18 and the WPTC.

[0221] Blower control method see Fig.14 When there is no demand from the passenger compartment, the blower is in the default state. When there is demand from the passenger compartment, the blower first runs to the initial state and then switches to the corresponding wind speed according to the wind speed increase or decrease command received.

[0222] Mode damper control method see Fig.15 When there is no demand in the passenger compartment, the foot is in the default state. After the passenger compartment inputs the demand, the mode damper motor voltage is adjusted according to the demand, so that the mode damper switches to the corresponding mode.

[0223] The control method of the compressor 18 is shown in Fig.16 When there is no cooling demand in the passenger compartment, the compressor 18 is in the default state. After the cooling demand in the passenger compartment lasts for 30 seconds, the compressor 18 first runs to the initial state, and then switches to the corresponding speed according to the received temperature increase or decrease command.

[0224] WPTC control method see Fig.17 When there is no heating demand in the passenger compartment, the WPTC is in the default state. When the heating demand is input in the passenger compartment, the WPTC first operates to the initial state, and then switches to the corresponding power according to the received temperature increase or decrease command.

[0225] Based on a vehicle integrated thermal management method provided by the above method embodiment, an embodiment of the present application also provides a vehicle integrated thermal management device, which will be described below in conjunction with the accompanying drawings.

[0226] See also Fig.18 As shown in FIG. 1 , this figure is a schematic diagram of the structure of a vehicle integrated thermal management device provided in an embodiment of the present application. The device is applied to the vehicle integrated thermal management system in the above embodiment. Fig.18 As shown, the vehicle integrated thermal management device includes:

[0227] A first acquisition unit 1801 is used to acquire a state of a passenger compartment of a vehicle, and determine a first circuit in the vehicle integrated thermal management system according to the state of the passenger compartment;

[0228] A second acquisition unit 1802 is used to acquire a battery status of the vehicle, and determine a second circuit in the vehicle integrated thermal management system according to the battery status;

[0229] The control unit 1803 is used to control the operation of the first loop and the second loop.

[0230] In a possible implementation, the first acquisition unit 1801 is used to determine the first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0231] The first acquisition unit 1801 is used to determine that the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit if it is determined that the passenger compartment state is the passenger compartment waste heat utilization state.

[0232] In a possible implementation, the second acquisition unit 1802 is used to determine the second loop in the vehicle integrated thermal management system according to the battery state, including:

[0233] The second acquiring unit 1802 is configured to determine, if it is determined that the battery state is a battery waste heat utilization state, that the second circuit includes the battery waste heat utilization circuit and the waste heat recovery circuit.

[0234] In a possible implementation, the passenger compartment waste heat utilization circuit further includes a heating system heater, and the heating system heater is used to heat the passenger compartment;

[0235] The first acquisition unit 1801 is used to determine the first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0236] The first acquisition unit 1801 is used to determine that the first circuit is the passenger compartment waste heat utilization circuit if it is determined that the passenger compartment state is the passenger compartment heating state, or the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit.

[0237] In a possible implementation, the battery pack includes a heating film, and the heating film is used to heat the battery pack;

[0238] The second acquisition unit 1802 is used to determine the second loop in the vehicle integrated thermal management system according to the battery state, including:

[0239] The second acquisition unit 1802 is used to determine that the second circuit includes the heating film of the battery pack, or includes the waste heat recovery circuit, the battery waste heat utilization circuit and the heating film of the battery pack if it is determined that the battery state is the battery heating state.

[0240] In a possible implementation, the vehicle integrated thermal management system further includes an air conditioning refrigeration circuit;

[0241] The air conditioning refrigeration circuit comprises a gas-liquid separator, a compressor, a condenser, a thermal expansion valve and an evaporator core connected in series, and the evaporator core belongs to the passenger compartment air conditioner; the air conditioning refrigeration circuit is used to cool the passenger compartment of the vehicle;

[0242] The first acquisition unit 1801 is used to determine the first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0243] The first acquisition unit 1801 is configured to determine that the first circuit includes the air-conditioning refrigeration circuit if it is determined that the passenger compartment state is a passenger compartment cooling state.

[0244] In a possible implementation, the vehicle integrated thermal management system further includes a battery insulation circuit;

[0245] The battery insulation circuit includes a water cooling plate circuit, a battery refrigeration unit and a battery circuit water pump connected in series, and the battery insulation circuit is used to keep the battery pack warm;

[0246] The second acquisition unit 1802 is used to determine the second loop in the vehicle integrated thermal management system according to the battery state, including:

[0247] The second acquiring unit 1802 is configured to determine that the second circuit includes the battery heat preservation circuit if it is determined that the battery state is the battery heat preservation state.

[0248] In a possible implementation, the vehicle integrated thermal management system further includes a passenger compartment heating circuit;

[0249] The passenger compartment heating circuit includes the circuit main water pump, the heating system heater and the water heating core connected in series;

[0250] The first acquisition unit 1801 is used to determine the first loop in the vehicle integrated thermal management system according to the passenger compartment state, including:

[0251] The first acquiring unit 1801 is configured to determine that the first circuit includes the passenger compartment heating circuit if it is determined that the passenger compartment state is a passenger compartment heating state.

[0252] Based on a vehicle integrated thermal management system provided by the above method embodiment, the present application provides a vehicle, wherein the vehicle includes the vehicle integrated thermal management system described in any of the above embodiments.

[0253] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0254] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0255] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0256] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0257] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle integrated thermal management system, characterized in that: The vehicle integrated thermal management system includes a waste heat recovery circuit, a heating circuit and a controller; The waste heat recovery circuit includes an oil pump, a hydraulic system and an oil circuit of an oil-water plate heat exchanger connected in series; the hydraulic system is used to generate hydraulic oil with heat, and the oil pump is used to input the hydraulic oil into the oil circuit of the oil-water plate heat exchanger; The heating circuit includes: a passenger compartment waste heat utilization circuit and a battery waste heat utilization circuit; the passenger compartment waste heat utilization circuit includes a coolant water circuit of the oil-water plate heat exchanger connected in series, a water heating core included in the passenger compartment air conditioner, and a circuit main water pump; the battery waste heat utilization circuit includes a coolant water circuit of the oil-water plate heat exchanger connected in series, a battery pack, and the circuit main water pump; the coolant water circuit is used to exchange heat with the oil circuit; The controller is used to obtain the passenger compartment status of the vehicle, and determine the first circuit in the vehicle integrated thermal management system according to the passenger compartment status; obtain the battery status of the vehicle, and determine the second circuit in the vehicle integrated thermal management system according to the battery status; and control the operation of the first circuit and the second circuit.

2. The vehicle integrated thermal management system according to claim 1, characterized in that: The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including: If it is determined that the passenger compartment state is a passenger compartment waste heat utilization state, it is determined that the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit.

3. The vehicle integrated thermal management system according to claim 1, characterized in that: The controller is used to determine a second loop in the vehicle integrated thermal management system according to the battery state, including: If it is determined that the battery state is a battery waste heat utilization state, it is determined that the second circuit includes the battery waste heat utilization circuit and the waste heat recovery circuit.

4. The vehicle integrated thermal management system according to claim 1, characterized in that: The passenger compartment waste heat utilization circuit further includes a heating system heater, and the heating system heater is used to heat the passenger compartment; The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including: If it is determined that the passenger compartment state is the passenger compartment heating state, the first circuit is determined to be the passenger compartment waste heat utilization circuit, or the first circuit includes the passenger compartment waste heat utilization circuit and the waste heat recovery circuit.

5. The vehicle integrated thermal management system according to claim 1, characterized in that: The battery pack includes a heating film, and the heating film is used to heat the battery pack; The controller is used to determine a second loop in the vehicle integrated thermal management system according to the battery state, including: If it is determined that the battery state is the battery heating state, it is determined that the second circuit includes the heating film of the battery pack, or includes the waste heat recovery circuit, the battery waste heat utilization circuit and the heating film of the battery pack.

6. The vehicle integrated thermal management system according to claim 1, characterized in that: The vehicle integrated thermal management system also includes an air conditioning refrigeration circuit; The air conditioning refrigeration circuit comprises a gas-liquid separator, a compressor, a condenser, a thermal expansion valve and an evaporator core connected in series, and the evaporator core belongs to the passenger compartment air conditioner; the air conditioning refrigeration circuit is used to cool the passenger compartment of the vehicle; The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including: If it is determined that the passenger compartment state is a passenger compartment cooling state, it is determined that the first circuit includes the air-conditioning refrigeration circuit.

7. The vehicle integrated thermal management system according to claim 1, characterized in that: The vehicle integrated thermal management system also includes a battery insulation circuit; The battery insulation circuit includes a water cooling plate circuit, a battery refrigeration unit and a battery circuit water pump connected in series, and the battery insulation circuit is used to keep the battery pack warm; The controller is used to determine a second loop in the vehicle integrated thermal management system according to the battery state, including: If it is determined that the battery state is a battery heat preservation state, it is determined that the second circuit includes the battery heat preservation circuit.

8. The vehicle integrated thermal management system according to claim 1, characterized in that: The vehicle integrated thermal management system also includes a passenger compartment heating circuit; The passenger compartment heating circuit includes the circuit main water pump, the heating system heater and the water heating core connected in series; The controller is used to determine a first loop in the vehicle integrated thermal management system according to the passenger compartment state, including: If it is determined that the passenger compartment state is a passenger compartment heating state, it is determined that the first circuit includes the passenger compartment heating circuit.

9. A vehicle integrated thermal management method, characterized in that: The method is applied to a controller, and the controller belongs to the vehicle integrated thermal management system according to any one of claims 1 to 8; Acquiring a passenger compartment state of a vehicle, and determining a first circuit in the vehicle integrated thermal management system according to the passenger compartment state; Acquiring a battery status of the vehicle, and determining a second circuit in the vehicle integrated thermal management system according to the battery status; The first loop and the second loop are controlled to operate.

10. A vehicle, characterized in that: The vehicle includes the vehicle integrated thermal management system according to any one of claims 1-8.

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