CN119567816A - Vehicle heat management integrated system, control method and vehicle - Google Patents
Vehicle heat management integrated system, control method and vehicle Download PDFInfo
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- CN119567816A CN119567816A CN202411858515.5A CN202411858515A CN119567816A CN 119567816 A CN119567816 A CN 119567816A CN 202411858515 A CN202411858515 A CN 202411858515A CN 119567816 A CN119567816 A CN 119567816A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
- B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a vehicle heat management integrated system, a control method and a vehicle, which relate to the technical field of vehicle heat management, wherein a refrigerant sequentially flows through an indoor heat exchange module, a first expansion valve and an outdoor heat exchange module in a heating mode, and can be divided into three paths after flowing through the indoor heat exchange module, wherein a first path flows to the outdoor heat exchange module through the first expansion valve so as to realize indoor heating, a second path flows to a heat recovery heat exchanger through the second expansion valve so as to recover heat of a motor electric control module absorbed by a motor electric control heat absorption module, and a third path flows to a battery heat dissipation heat exchanger through the third expansion valve so as to realize battery cooling.
Description
Technical Field
The invention relates to the technical field of vehicle thermal management, in particular to a vehicle thermal management integrated system, a control method and a vehicle.
Background
The existing automobile air conditioner module can circulate the refrigerant through a compressor, a four-way reversing valve, an outdoor heat exchange module, an outdoor fan, a throttle valve, an indoor heat exchange module, an indoor fan and the like to realize the refrigeration or heating of the interior of the automobile. The whole vehicle motor is electrically controlled to cool the motor by circulating cooling liquid through a water pump, a water tank, a heat exchanger, a fan and the like, and the air conditioner module and the motor electrically controlled cooling system respectively and independently operate. The whole vehicle battery thermal management system is also an independent system, and the whole vehicle battery thermal management system is integrated into an air conditioning system, and is connected with an indoor heat exchanger in parallel to dissipate heat of battery cooling liquid.
In the process of realizing the invention, the inventor finds that the prior art has at least the following problems that the whole vehicle has compact space, the independent systems occupy additional space, the weight of the vehicle is increased, the cost is high, and in addition, the heat of the electric control motor in winter cannot be utilized to heat the interior of the vehicle, so that the waste of energy sources is caused to a certain extent.
It is a technical problem that needs to be solved at present for a person skilled in the art how to integrate air conditioning cooling, electric motor control cooling and battery cooling, to reduce the overall weight of the system and reduce energy waste.
Disclosure of Invention
The invention provides a vehicle thermal management integrated system, which can lighten the overall weight of the system and can recycle the electric control heat of a motor so as to reduce energy waste, and the specific scheme is as follows:
a vehicle thermal management integrated system comprises an air conditioning module, a motor electric control heat dissipation module and a battery heat dissipation module;
the air conditioner module comprises a compressor, an indoor heat exchange module, a first expansion valve, an outdoor heat exchange module, a second expansion valve, a third expansion valve and a first expansion valve, wherein the compressor, the indoor heat exchange module, the first expansion valve and the outdoor heat exchange module are circularly communicated so as to realize indoor heating circulation;
The motor electric control heat dissipation module comprises a heat recovery heat exchanger, one flow passage of the heat recovery heat exchanger is arranged between the second expansion valve and the inlet end of the compressor, and the other flow passage of the heat recovery heat exchanger is used for being connected with the motor electric control heat absorption module in series so as to recover heat of the motor electric control module absorbed by the motor electric control heat absorption module;
The battery heat dissipation module comprises a battery heat dissipation heat exchanger, a battery heat dissipation driver and a battery heat absorption module which are sequentially connected in series to a battery main pipeline, one flow passage of the battery heat dissipation heat exchanger is arranged between the third expansion valve and the inlet end of the compressor, the other flow passage of the battery heat dissipation heat exchanger is arranged between the battery heat absorption module and the battery heat dissipation driver, the battery heat dissipation driver drives cooling liquid to flow, heat of a battery is absorbed when the cooling liquid flows through the battery heat absorption module, and heat is transferred to the air conditioning module when the cooling liquid flows through the battery heat dissipation heat exchanger, so that battery cooling is achieved.
Optionally, the motor electric control heat dissipation module further comprises an air cooling radiator, a motor electric control heat dissipation driver and a motor electric control heat absorption module which are sequentially connected in series, wherein the air cooling radiator cools down by means of an outdoor fan of the outdoor heat exchange module, the motor electric control heat dissipation driver is used for driving cooling liquid in a pipeline to flow, heat of the motor electric control module is absorbed when the cooling liquid flows through the motor electric control heat absorption module, and heat is released when the cooling liquid flows through the air cooling radiator.
Optionally, the electric control heat dissipation module of the motor selectively exchanges heat through the air-cooled radiator or the heat recovery heat exchanger.
Optionally, the motor electric control heat dissipation driver and the motor electric control heat absorption module are connected in series with a motor electric control main pipeline;
the air-cooled radiator is connected with the motor electric control main pipeline through a first interface and a second interface of the three-way valve;
The heat recovery heat exchanger is connected into the electric control main pipeline of the motor through a first interface and a third interface of the three-way valve (25).
Optionally, a first expansion water tank is arranged in parallel on the electric control main pipeline of the motor, and a water inlet temperature sensor is arranged on the electric control main pipeline of the motor.
Optionally, a second expansion water tank is arranged in parallel on the main battery pipeline, and a water outlet temperature sensor is arranged on the main battery pipeline.
Optionally, the air conditioner module comprises a four-way reversing valve for switching the flow direction of the refrigerant, and four interfaces of the four-way reversing valve are respectively communicated with the outlet end and the inlet end of the compressor, the outdoor heat exchange module and the indoor heat exchange module.
Optionally, the air conditioning module comprises a gas-liquid separator and a dry filter;
the gas-liquid separator is arranged between the inlet end of the compressor and the fourth interface of the four-way reversing valve, and the drying filter is arranged between the first expansion valve and the outdoor heat exchange module.
The invention also provides a vehicle heat management integrated control method, which comprises the steps of setting the temperature T0 in the vehicle and the temperature T3 of the battery, and detecting the indoor temperature T1, the water inlet temperature T2 and the water outlet temperature T4;
When the indoor refrigerating-motor electric control radiating-battery radiating state is adopted, directly starting an indoor fan to enter a ventilation state, judging whether T0 is less than T1, if so, operating an air conditioning module, and starting a compressor, the indoor fan, an outdoor fan and a first expansion valve;
Judging whether T0 is more than or equal to T1, if not, continuing to operate the air conditioner module, if so, continuing to judge whether the battery heat dissipation module operates, if so, closing the first expansion valve, and if not, only maintaining a ventilation state;
judging whether to exit indoor refrigeration, if not, continuing to return to the detection T0< T1, and if so, exiting indoor refrigeration.
Optionally, judging whether T2 is more than 30 ℃, if so, operating the motor electric control heat dissipation module, starting the motor electric control heat dissipation driver and the outdoor fan, controlling the flow direction of cooling liquid flowing out of the motor electric control heat absorption module to flow into the air cooling heat radiator only by the three-way valve, and radiating the cooling liquid by starting the outdoor fan, if T2 is less than or equal to 30 ℃, stopping the motor electric control heat dissipation module, judging whether to exit the motor electric control heat dissipation according to a control instruction, if not, returning to continuously detect T2 is more than 30 ℃, otherwise, exiting.
Optionally, before judging whether T3 is less than T4, detecting whether indoor refrigeration is operated or not;
If the indoor refrigeration is not operated, the battery heat dissipation module is started, the battery heat dissipation driver, the compressor, the outdoor fan and the third expansion valve are started, and when T3 is detected to be more than or equal to T4 in the battery heat dissipation operation, all devices are stopped;
The method comprises the steps of starting a battery heat dissipation driver and a third expansion valve when indoor refrigeration operation is performed, stopping the battery heat dissipation driver and the third expansion valve when T3 is detected to be more than or equal to T4, judging whether to exit battery heat dissipation according to a control instruction, if not, continuing to return to detection T3< T4, and if yes, exiting battery heat dissipation.
Optionally, when the system is in an indoor heating-motor electric control heat dissipation-motor electric control waste heat recovery state, judging whether T0 is more than T1, if so, operating the heating system, namely starting a compressor, a four-way reversing valve, an indoor fan, an outdoor fan and a first expansion valve, if T0 is less than or equal to T1, stopping operating the heating system, judging whether to exit heating according to a control instruction, if not, continuously judging whether T0 is more than T1, and if so, exiting indoor heating.
Optionally, judging whether T2 is more than 30 ℃, if so, operating the motor electric control heat dissipation module, starting the motor electric control heat dissipation driver and the outdoor fan, controlling the flow of cooling liquid flowing out of the motor electric control heat absorption module by the three-way valve to flow into the air cooling radiator, radiating the cooling liquid by starting the outdoor fan, if T2 is less than or equal to 30 ℃, judging whether indoor heating is operated, if not, stopping the motor electric control heat dissipation module, judging whether to exit the motor electric control heat dissipation mode according to a control instruction, if indoor heating is operated, operating the motor electric control waste heat recovery, starting the motor electric control heat dissipation driver and the second expansion valve, controlling the flow of cooling liquid flowing out of the motor electric control heat absorption module by the three-way valve to flow into the heat recovery heat exchanger, radiating the cooling liquid by the refrigerant, if T2 is more than 30 ℃, closing the second expansion valve, reversing the three-way valve, and radiating the cooling liquid by the air cooling radiator.
The invention also provides a vehicle, comprising the vehicle thermal management integrated system.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects:
The invention provides a vehicle heat management integrated system, which combines an air conditioner module, a motor electric control heat dissipation module and a battery heat dissipation module, wherein a refrigerant flows through an indoor heat exchange module, a first expansion valve and an outdoor heat exchange module in sequence in a heating mode, and the refrigerant can be divided into three paths after passing through the indoor heat exchange module, wherein a first path flows through the first expansion valve to the outdoor heat exchange module to realize indoor heating, a second path flows through a second expansion valve to a heat recovery heat exchanger to recover heat of the motor electric control module absorbed by a motor electric control heat absorption module, and a third path flows through a third expansion valve to a battery heat dissipation heat exchanger to realize battery cooling.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system schematic diagram of a vehicle thermal management integrated system of the present invention;
FIG. 2 is a schematic diagram of the integrated vehicle thermal management system of the present invention in an indoor refrigeration-electric motor controlled heat dissipation-battery heat dissipation state;
FIG. 3 is a schematic view highlighting the indoor refrigeration of FIG. 2;
FIG. 4 is a schematic diagram highlighting the electronically controlled heat dissipation of the motor of FIG. 2;
FIG. 5 is a schematic view highlighting heat dissipation from the battery of FIG. 2;
FIG. 6 is a schematic diagram of the integrated system for vehicle thermal management in the state of indoor heating-electric motor controlled heat dissipation and electric motor controlled waste heat recovery;
FIG. 7 is a schematic view highlighting the indoor heating of FIG. 6;
FIG. 8 is a schematic diagram highlighting the electric heat dissipation and the electric heat recovery of the motor of FIG. 6;
fig. 9 is a schematic diagram of control logic of an indoor refrigeration-motor electric control heat dissipation-battery heat dissipation state;
Fig. 10 is a schematic diagram of control logic of indoor heating-motor electric control heat dissipation-motor electric control waste heat recovery.
The drawings include:
The air conditioner comprises an air conditioner module 1, a compressor 11, an outdoor heat exchange module 12, an outdoor fan 1201, an outdoor heat exchanger 1202, an indoor heat exchange module 13, an indoor fan 1301, an indoor heat exchanger 1302, a first expansion valve 14, a second expansion valve 15, a third expansion valve 16, a four-way reversing valve 17, a gas-liquid separator 18, a pressure sensor 19 and a drying filter 110;
the motor electric control heat dissipation module 2, the air-cooled radiator 21, the motor electric control heat dissipation driver 22, the motor electric control heat absorption module 23, the heat recovery heat exchanger 24, the three-way valve 25, the first expansion water tank 26 and the water inlet temperature sensor 27;
the battery heat dissipation module 3, the battery heat dissipation heat exchanger 31, the battery heat dissipation driver 32, the battery heat absorption module 33, the second expansion water tank 34 and the outlet water temperature sensor 35.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the following describes the vehicle thermal management integrated system and the vehicle of the present invention in detail with reference to the accompanying drawings and the specific embodiments.
The invention provides a vehicle heat management integrated system, which comprises an air conditioning module 1 and a motor electric control heat dissipation module 2, wherein the vehicle heat management integrated system couples the air conditioning module 1 and the motor electric control heat dissipation module 2 with each other, and heat in the motor electric control heat dissipation module 2 dissipates by means of the air conditioning module 1, so that the number of devices and the pipeline length of the motor electric control heat dissipation module 2 are simplified, and the weight is reduced.
As shown in fig. 1, the air conditioning module 1 includes a compressor 11, an outdoor heat exchange module 12, an indoor heat exchange module 13, a first expansion valve 14, and other devices, which are connected through refrigerant pipes, and the inside of the pipes is used for circulating refrigerant, and the refrigerant in the pipes can flow through the devices. The air conditioning module 1 makes the refrigerant flow according to the set direction through the cooperation of the devices, so that the flow direction of the refrigerant in different modes of indoor refrigeration or indoor heating is different.
The inlet end of the outdoor heat exchange module 12 and the inlet end of the indoor heat exchange module 13 are connected in parallel to the outlet end (exhaust port) of the compressor 11, the outlet end of the compressor 11 is selectively communicated with the inlet end of the outdoor heat exchange module 12 or with the inlet end of the indoor heat exchange module 13, during indoor refrigeration, the outlet end of the compressor 11 is communicated with the inlet end of the outdoor heat exchange module 12, the refrigerant discharged from the compressor 11 flows to the outdoor heat exchange module 12, the inlet end (suction port) of the compressor 11 is communicated with the outlet end of the indoor heat exchange module 13, the refrigerant discharged from the indoor heat exchange module 13 flows back to the compressor 11 through the inlet end of the compressor 11, during indoor heating, the refrigerant discharged from the compressor 11 flows to the indoor heat exchange module 13, and the inlet end of the compressor 11 is communicated with the outlet end of the outdoor heat exchange module 12, and the refrigerant discharged from the outdoor heat exchange module 12 flows back to the compressor 11 through the inlet end of the compressor 11. It should be understood that the inlet and outlet are relative concepts that will vary depending on the direction of refrigerant flow in and out of the associated refrigeration device in either the cooling or heating mode, such as the inlet of the indoor heat exchange module 13 during indoor cooling, i.e., the outlet of the indoor heat exchange module 13 during indoor heating.
The pipeline between the outdoor heat exchange module 12 and the indoor heat exchange module 13 is provided with a first expansion valve 14, and the outdoor heat exchange module 12, the first expansion valve 14 and the indoor heat exchange module 13 are connected in series in the same air conditioner main pipeline. The expansion valve is an important part in an air conditioning system and is mainly responsible for throttling and reducing pressure, regulating the flow of the refrigerant and controlling the superheat degree of an outlet of an evaporator. In the indoor cooling, the refrigerant flowing out of the outdoor heat exchange module 12 flows to the indoor heat exchange module 13 through the first expansion valve 14 as shown in fig. 2 and 3, in the indoor heating, the refrigerant flowing out of the indoor heat exchange module 13 flows to the outdoor heat exchange module 12 through the first expansion valve 14 as shown in fig. 6 and 7, and in the two modes of indoor cooling and indoor heating, the flow directions of the refrigerants passing through the outdoor heat exchange module 12, the first expansion valve 14 and the indoor heat exchange module 13 are different. It will be understood that the compressor 11, the outdoor heat exchange module 12, the first expansion valve 14, and the indoor heat exchange module 13 are sequentially and circularly connected to form a refrigeration cycle during indoor cooling, so that an indoor refrigeration cycle can be realized, and the compressor 11, the indoor heat exchange module 13, the first expansion valve 14, and the outdoor heat exchange module 12 are sequentially and circularly connected to form a heating cycle during indoor heating, so that an indoor heating cycle can be realized.
The outdoor heat exchange module 12 comprises an outdoor fan 1201 and an outdoor heat exchanger 1202, the outdoor heat exchanger 1202 can adopt a coil pipe and fin structure, namely, the outdoor heat exchanger 1202 can adopt a coil pipe type heat exchanger and the like, and refrigerant can circulate in the coil pipe type heat exchanger, and when the outdoor fan 1201 works, active air flow is generated to blow the outdoor heat exchanger 1202, so that the refrigerant in the outdoor heat exchanger 1202 and the outside air are subjected to forced convection heat exchange, and heat transfer is realized. The outdoor heat exchanger 1202 radiates heat to the outside air during indoor cooling, and the outdoor heat exchanger 1202 absorbs heat of the outside air during indoor heating.
The indoor heat exchange module 13 comprises an indoor fan 1301 and an indoor heat exchanger 1302, the indoor heat exchanger 1302 can adopt a coil pipe and fins and other structures, namely the indoor heat exchanger 1302 can adopt a coil pipe type heat exchanger and the like, refrigerant can circulate in the indoor heat exchanger 1302, and when the indoor fan 1301 works, active air flow is generated to blow the indoor heat exchanger 1302, so that the refrigerant in the indoor heat exchanger 1302 and indoor air undergo forced convection heat exchange, and heat transfer is realized. The indoor heat exchanger 1302 absorbs heat of indoor air during indoor cooling, and the indoor heat exchanger 1302 radiates heat to indoor air during indoor heating.
The motor electric control heat dissipation module 2 comprises an air cooling radiator 21, a motor electric control heat dissipation driver 22, a motor electric control heat absorption module 23 and other devices, wherein the devices are connected through pipelines, and cooling liquid is circulated in the pipelines. The motor electrically controlled heat dissipating driver 22 may be a water pump.
The pipeline of the motor electric control heat dissipation module 2 is independent of the pipeline of the air conditioning module 1, and the cooling liquid in the motor electric control heat dissipation module 2 and the refrigerant in the air conditioning module 1 do not circulate mutually, but can realize heat exchange and transfer.
The air-cooled radiator 21 is disposed at one side of the outdoor fan 1201, for example, between the outdoor fan 1201 and the outdoor heat exchanger 1202, and the air-cooled radiator 21 may have a coil and fin structure, that is, the air-cooled radiator 21 may have a coil heat exchanger, and the inside of the air-cooled radiator 21 is used for circulating the cooling liquid of the electric motor control heat dissipation module 2. The air flow generated by the outdoor fan 1201 can be blown onto the air-cooled radiator 21, and the cooling liquid in the air-cooled radiator 21 exchanges heat with the external air by forced convection, so that heat transfer is realized. The outdoor fan 1201 blows external cold air to the outer surface of the air-cooled radiator 21, and the air absorbs heat to cool the cooling liquid in the air-cooled radiator 21, so that the air-cooled radiator 21 is cooled by the outdoor fan 1201 of the outdoor heat exchange module 12. The air-cooled radiator 21 and the outdoor heat exchange module 12 are integrated with each other, and the air-cooled radiator 21 and the outdoor heat exchanger 1202 share the same outdoor fan 1201 for radiating heat, so that two sets of fans do not need to be repeatedly arranged.
The air-cooled radiator 21, the motor electric control radiating driver 22 and the motor electric control heat absorbing module 23 are sequentially connected in series with the motor electric control main pipeline, and cooling liquid in the motor electric control main pipeline circularly flows. The motor electric control heat dissipation driver 22 is used for driving the cooling liquid in the pipeline to flow, providing driving force for the cooling liquid, and the cooling liquid circulates in the pipeline and exchanges heat at different positions. The motor electric control heat absorption module 23 is close to the motor electric control module, heat generated during motor electric control work is absorbed by the motor electric control heat absorption module 23, the heat enters cooling liquid of the motor electric control heat dissipation module 2, the heat of the motor electric control module is absorbed when the cooling liquid flows through the motor electric control heat absorption module 23, and the heat is transferred into air and taken away when the cooling liquid flows through the air cooling radiator 21. The cooling liquid flowing in the motor electric control heat dissipation module 2 rises in temperature when passing through the motor electric control heat absorption module 23 and lowers in temperature when passing through the air cooling radiator 21.
During indoor refrigeration and indoor heating, the outdoor heat exchange module 12 and the indoor heat exchange module 13 work, so that the motor electric control heat dissipation module 2 can release heat through the air cooling radiator 21 no matter the air conditioner module 1 is in indoor refrigeration and indoor heating, and heat dissipation and temperature reduction of the motor electric control module are realized.
The air conditioning module 1 further includes a third expansion valve 16, as shown in fig. 1, one end of the third expansion valve 16 is connected between the outdoor heat exchange module 12 and the first expansion valve 14 through a pipeline, and the other end of the third expansion valve 16 is connected to the inlet end of the compressor 11 through a pipeline.
The vehicle thermal management integrated system of the invention further comprises a battery heat radiation module 3, wherein the battery heat radiation module 3 can be a component independent of the air conditioner module 1 and the motor electric control heat radiation module 2, and cooling liquid flows in the battery heat radiation module 3.
The battery heat dissipation module 3 comprises a battery heat dissipation heat exchanger 31, a battery heat dissipation driver 32 and a battery heat absorption module 33 which are connected in series to a battery main pipeline, wherein the battery heat dissipation heat exchanger 31 is connected in series between the third expansion valve 16 and the inlet end of the compressor 11, the battery heat dissipation driver 32 drives cooling liquid to flow, the battery heat dissipation driver 32 can be a water pump, heat of a battery is absorbed when the cooling liquid flows through the battery heat absorption module 33, and heat is transferred to the refrigerant of the air conditioning module 1 when the cooling liquid flows through the battery heat dissipation heat exchanger 31.
The battery heat-dissipation heat exchanger 31 includes two heat-exchanging flow channels, one of which is connected to the air-conditioning module 1, that is, is connected in series between the third expansion valve 16 and the inlet end of the compressor 11, and the other of which is connected between the battery heat-absorption module 33 and the battery heat-dissipation driver 32, and the refrigerant in the air-conditioning module 1 and the cooling liquid in the battery heat-dissipation module 3 exchange heat at the battery heat-dissipation heat exchanger 31. The structure of the battery heat-dissipating heat exchanger 31 may be the same as that of the heat-recovering heat exchanger 24, that is, the battery heat-dissipating heat exchanger 31 may be a plate heat exchanger as well.
According to the vehicle thermal management integrated system, the motor electric control heat dissipation module 2 and the air conditioning module 1 are coupled and integrated on the basis of the air conditioning module 1, and the battery heat dissipation module 3 and the air conditioning module 1 are coupled and integrated to form the integrated system design of the air conditioning module 1, the motor electric control heat dissipation module 2 and the battery heat dissipation module 3, so that the structural composition of the whole vehicle thermal management integrated system is simplified, only one set of fans is needed to realize heat dissipation, no additional fans are needed to be arranged for the electric control heat dissipation module 2 and the battery heat dissipation module 3, the pipeline length of the electric control heat dissipation module 2 and the pipeline length of the battery heat dissipation module 3 are shortened, and the light weight of a cooling heat dissipation structure is facilitated.
On the basis of the above scheme, as shown in fig. 1, the air conditioning module 1 further includes a second expansion valve 15, one end of the second expansion valve 15 is connected to the inlet end of the compressor 11 through a pipeline, the other end is connected between the indoor heat exchange module 13 and the first expansion valve 14 through a pipeline, the pipeline where the second expansion valve 15 is located may be a bypass pipeline independent of the main pipeline of the air conditioner, the pipeline where the second expansion valve 15 is located is mainly used for circulating refrigerant during indoor heating, and the refrigerant flowing through the second expansion valve 15 does not flow through the outdoor heat exchange module 12 any more and directly flows to the compressor 11.
The motor electronic control heat dissipation module 2 further comprises a heat recovery heat exchanger 24, the heat recovery heat exchanger 24 is used for transferring heat in the middle of a pipeline of the motor electronic control heat dissipation module 2 to the refrigerant of the air conditioning module 1, when the air conditioning module 1 is in indoor heating, and as shown in the combination of fig. 8, the heat recovery heat exchanger 24 can transfer the heat in the middle of the pipeline of the motor electronic control heat dissipation module 2 to the refrigerant of the air conditioning module 1, so that cooling and heat dissipation of the motor electronic control module are met, and heat generated by the motor electronic control module 2 is used for indoor heating, so that heat recycling is realized. Compared with the air directly radiating the heat, the heat can be transferred to the air conditioning module 1 to realize better utilization, and the energy waste is reduced.
The heat recovery heat exchanger 24 comprises two mutually independent flow channels which can mutually exchange heat, wherein one flow channel is communicated with the air conditioning module 1, and the other flow channel is communicated with the motor electric control heat dissipation module 2, so that heat transfer is realized between the air conditioning module 1 and the motor electric control heat dissipation module 2. The heat recovery heat exchanger 24 is arranged between the second expansion valve 15 and the compressor 11 in a flow passage for communicating with the air conditioning module 1, that is, the second expansion valve 15, the heat recovery heat exchanger 24, the flow passage for communicating with the air conditioning module 1, and the inlet end of the compressor 11 are sequentially connected in series, and the flow passage for communicating with the electric motor control heat dissipation module 2 of the heat recovery heat exchanger 24 is connected in parallel with the electric motor control main pipeline. The motor electric control heat dissipation module 2 selectively exchanges heat through the air-cooled heat radiator 21 or the heat recovery heat exchanger 24, and as the heat recovery heat exchanger 24 is connected in parallel on the motor electric control main pipeline, a control valve is arranged at a connecting node to realize the switching of cooling liquid, and the control valve can be an electric three-way valve. The air-cooled radiator 21 stops flowing the cooling liquid when the cooling liquid flows through the recovery heat exchanger 24, and the heat recovery heat exchanger 24 stops flowing the cooling liquid when the cooling liquid flows through the air-cooled radiator 21. The heat recovery heat exchanger 24 may be a plate heat exchanger.
It should be noted that the present invention does not exclude that the air-cooled radiator 21 and the heat recovery heat exchanger 24 are connected in series, and that only one of the devices may still be operated to exchange heat.
The above can be seen that the vehicle thermal management integrated system provided by the invention can comprise an air conditioning module 1, a motor electric control heat dissipation module 2 and a battery heat dissipation module 3. The air conditioning module 1 can comprise a compressor 11, an indoor heat exchange module 13, a first expansion valve 14 and an outdoor heat exchange module 12 which are circularly communicated to realize indoor heating circulation, a second expansion valve 15, one end of the second expansion valve 15 is communicated with the inlet end of the compressor 11, the other end of the second expansion valve is communicated between the indoor heat exchange module 13 and the first expansion valve 14, a third expansion valve 16, one end of the third expansion valve 16 is communicated between the outdoor heat exchange module 12 and the first expansion valve 14, and the other end of the third expansion valve 16 is communicated with the inlet end of the compressor 11. The motor electric control heat dissipation module 2 may include a heat recovery heat exchanger 24, one flow passage of the heat recovery heat exchanger 24 is disposed between the second expansion valve 15 and the inlet end of the compressor 11, and the other flow passage of the heat recovery heat exchanger 24 is used for being connected in series with the motor electric control heat absorption module 23, so as to recover heat of the motor electric control module absorbed by the motor electric control heat absorption module 23. The battery heat dissipation module 3 may include a battery heat dissipation heat exchanger 31, a battery heat dissipation driver 32 and a battery heat absorption module 33 connected in series in sequence in a battery main pipeline, wherein one flow passage of the battery heat dissipation heat exchanger 31 is arranged between the third expansion valve 16 and the inlet end of the compressor 11, and the other flow passage of the battery heat dissipation heat exchanger 31 is arranged between the battery heat absorption module 33 and the battery heat dissipation driver 32 to realize battery cooling.
In this embodiment, the air conditioning module 1, the electric motor control heat dissipation module 2 and the battery heat dissipation module 3 are combined with each other, the refrigerant flows through the indoor heat exchange module 13, the first expansion valve 14 and the outdoor heat exchange module 12 in sequence in a heating mode, and the refrigerant can be divided into three paths after passing through the indoor heat exchange module 13, wherein the first path flows to the outdoor heat exchange module 12 through the first expansion valve 14 to realize indoor heating, the second path flows to the heat recovery heat exchanger 24 through the second expansion valve 15 to recover the heat of the electric motor control module absorbed by the electric motor control heat absorption module 23, and the third path flows to the battery heat dissipation heat exchanger 31 through the third expansion valve 16 to realize battery cooling.
Referring to fig. 1, the motor electric control heat dissipation driver 22 and the motor electric control heat absorption module 23 are connected in series with a motor electric control main pipeline, the pipeline where the air cooling radiator 21 is located is connected with the motor electric control main pipeline through a first interface and a second interface of the three-way valve 25, and the pipeline where the heat recovery heat exchanger 24 is located is connected with the motor electric control main pipeline through a first interface and a third interface of the three-way valve 25. Wherein the motor electric control heat dissipation module 2 is provided with a three-way valve 25 for switching the flow direction of the refrigerant, active switching is realized through the three-way valve 25, two interfaces of the three-way valve 25 are communicated for circulating the cooling liquid, the other interface is closed to stop circulating, the interface communicated with the motor electric control heat absorption module 23 is kept normally open, the other two interfaces are selectively opened, and one of the interfaces corresponding to the heat recovery heat exchanger 24 and the interface corresponding to the air cooling heat radiator 21 is opened for circulating the cooling liquid at the same moment. It will be appreciated that the first and second ports of the three-way valve 25 are on and the third port is off when heat is dissipated through the air-cooled radiator 21, and the first and third ports of the three-way valve 25 are on and the second port is off when heat is dissipated through the heat recovery heat exchanger 24.
Referring to fig. 1, a first expansion water tank 26 is arranged in parallel on a main electric motor pipeline, the first expansion water tank 26 is internally provided with cooling liquid, the first expansion water tank 26 is connected in parallel with an electric motor heat dissipation module 2, water is supplemented in front of an electric motor heat dissipation driver 22, and water is discharged after an electric motor heat absorption module 23 to perform an exhaust function.
The motor electric control main pipeline is provided with a water inlet temperature sensor 27, and the water inlet temperature sensor 27 is used for detecting the temperature of the cooling liquid at the node where the water inlet temperature sensor 27 is positioned and sending a temperature detection signal to the controller.
The second expansion water tank 34 is arranged in parallel on the main battery pipeline, the cooling liquid is stored in the second expansion water tank 34, the second expansion water tank 34 is connected in parallel with the battery heat dissipation module 3, water is supplemented before the battery heat dissipation driver 32, and water is discharged after the battery heat absorption module 33 to perform an exhaust function. The main battery pipeline is provided with a water outlet temperature sensor 35, and the water outlet temperature sensor 35 is used for detecting the temperature of the cooling liquid at the node where the water outlet temperature sensor 35 is located and sending a temperature detection signal to the controller.
As shown in fig. 1, the air conditioning module 1 includes a four-way reversing valve 17 for switching the flow direction of the refrigerant, and by means of the conduction mode of four ports of the four-way reversing valve 17, the flow direction of the refrigerant can be changed, that is, the switching between the cooling mode and the heating mode can be achieved. Four interfaces of the four-way reversing valve 17 are respectively communicated with an outlet end and an inlet end of the compressor 11, the outdoor heat exchange module 12 and the indoor heat exchange module 13. The outlet end and the inlet end of the compressor 11 are respectively connected to one interface of the four-way reversing valve 17, the compressor 11 provides driving force of the refrigerant, the direction of the driving of the refrigerant by the compressor 11 is unchanged under the indoor refrigeration and indoor heating conditions, the outlet end of the compressor 11 outputs the refrigerant, and the circulated refrigerant flows into the compressor 11 from the inlet end. More specifically, as shown in fig. 1, the four ports of the four-way reversing valve 17 are a first port to a fourth port, respectively, the outlet port (exhaust port) of the compressor 11 is connected to the first port, the second port is connected to one end of the outdoor heat exchanger 1202, the other end of the outdoor heat exchanger 1202 is connected to one end of the first expansion valve 14, the other end of the first expansion valve 14 is connected to one end of the indoor heat exchanger 1302, the other end of the indoor heat exchanger 1302 is connected to the third port, the fourth port is connected to the inlet port (intake port) of the compressor 11, the first port is connected to the second port and the third port is connected to the fourth port during indoor refrigeration, and the first port is connected to the third port and the second port is connected to the fourth port during indoor heating. One end of the second expansion valve 15 is connected between the indoor heat exchanger 1302 and the first expansion valve 14, the other end of the second expansion valve 15 is connected with one end of a flow passage for communicating with the air conditioning module 1 by the heat recovery heat exchanger 24, and the other end of the flow passage is connected with an inlet end of the compressor. One end of the third expansion valve 16 is connected between the outdoor heat exchanger 1202 and the first expansion valve 14, and the other end of the third expansion valve 16 is connected to one end of a flow passage for communicating with the air conditioning module 1 of the battery heat-dissipating heat exchanger 31, and the other end of the flow passage is connected to an inlet end of the compressor 11.
As shown in fig. 1, the air conditioning module 1 further includes a gas-liquid separator 18, a pressure sensor 19, and a dry filter 110. A gas-liquid separator 18 is provided before the inlet end of the compressor 11, the gas-liquid separator 18 being provided between the inlet end of the compressor 11 and the fourth port of the four-way reversing valve 17, the gas-liquid separator 18 being for gas-liquid separation to avoid the compressor 11 being hit by liquid. The pressure sensor 19 is disposed after the outlet end and before the inlet end of the compressor 11, for example, a low pressure sensor is disposed between the gas-liquid separator 18 and the inlet end of the compressor 11, and a high pressure sensor is disposed between the outlet end of the compressor 11 and the first port of the four-way reversing valve 17, respectively, for monitoring the refrigerant pressure at the corresponding locations. The dry filter 110 is disposed between the first expansion valve 14 and the outdoor heat exchange module 12, and the dry filter (DRIER FILTER) mainly plays a role in filtering impurities.
The invention provides a vehicle heat management integrated control method, which is applied to the vehicle heat management integrated system and mainly comprises two modes, namely indoor refrigeration and indoor heating, and specifically comprises the following steps:
The first mode is that indoor refrigeration, electric control heat dissipation of a motor and heat dissipation of a battery are performed.
The indoor refrigeration principle is that, with reference to fig. 2 and 3, the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure steam (gaseous refrigerant) through the compressor 11, flows through the four-way reversing valve 17 and then enters the outdoor heat exchanger 1202 to release heat through forced convection of the outdoor fan 1201, is condensed into medium-temperature high-pressure liquid refrigerant, and is divided into two paths after passing through the drying filter 110, the first branch flows through the first expansion valve 14 to be throttled into low-temperature low-pressure liquid (or gas-liquid mixture), enters the indoor heat exchanger 1302 to absorb heat and evaporate into low-temperature low-pressure gaseous refrigerant, the indoor air releases heat through the indoor fan 1301 to blow cold air, and the low-temperature low-pressure gaseous refrigerant flows through the four-way reversing valve 17 and then is converged with the second branch. The second branch flows through the third expansion valve 16 to be throttled into a low-temperature low-pressure liquid state (or gas-liquid mixture), enters the battery heat-dissipation heat exchanger 31 to absorb heat and evaporate into a low-temperature low-pressure gaseous refrigerant, flows out and then is converged with the first branch before the gas-liquid separator 18 to enter the gas-liquid separator 18, and finally returns to the compressor 11 for continuous circulation.
The motor electric control heat dissipation principle is that, as shown in fig. 2 and 4, the cooling liquid is powered by the motor electric control heat dissipation driver 22 (water pump), low-temperature cooling liquid flowing out of the air cooling radiator 21 is injected into the whole vehicle motor electric control heat absorption module 23, the heat absorbed by the motor and the electric control becomes high-temperature cooling liquid and then flows out, flows into the air cooling radiator 21 through the three-way valve 25, forcibly convects and releases the heat to be normal temperature through the outdoor fan 1201, and returns to the motor electric control heat dissipation driver 22 for continuous circulation. The first expansion water tank 26 is connected in parallel in the motor electric control heat dissipation module 2, water is discharged in front of the motor electric control heat dissipation driver 22 to supplement water for the motor electric control heat dissipation module 2, and water is discharged behind the motor electric control heat absorption module 23 to perform an exhaust function.
The battery cooling liquid is powered by a battery cooling driver 32 (water pump) in combination with the principle of battery cooling shown in fig. 2 and 5, the cooling liquid from the battery cooling heat exchanger 31 flows through the motor electric control heat absorption module 23 to absorb heat and cool the battery, and the cooling liquid returns to the battery cooling heat exchanger 31 to release heat after absorbing the heat of the battery, is cooled into low-temperature cooling liquid and returns to the battery cooling driver 32 to circularly reciprocate. The second expansion water tank 34 is connected in parallel with the battery heat dissipation module 3, and water is discharged in front of the battery heat dissipation driver 32 to supplement water for the battery heat dissipation module 3, and water is introduced behind the battery heat absorption module 33 to perform an exhaust function.
The flow of the mode one is shown in fig. 9, and the specific logic is as follows:
1. The air conditioning module 1 enters an indoor refrigeration-motor electric control heat dissipation-battery heat dissipation mode through a whole vehicle control instruction, the temperature T0 in the vehicle and the temperature T3 of the battery are set, the system enters a standby state, and all devices are not started. The indoor temperature T1, the water inlet temperature T2 and the water outlet temperature T4 are detected, and the indoor refrigeration requirement, the electric control heat dissipation requirement of the motor and the heat dissipation requirement of the battery are independently judged to run.
2. In the indoor cooling mode, the indoor fan 1301 is directly started to run in a ventilation state, when T0< T1 is detected, the air conditioning module 1 is run, and the compressor 11, the indoor fan 1301, the outdoor fan 1201 and the first expansion valve 14 are started. When the T0 is detected to be more than or equal to T1, judging whether the battery radiating module 3 is in operation, if not, stopping indoor refrigeration, only keeping a ventilation state, if so, only closing the first expansion valve 14, and finally judging whether to exit the mode according to a control instruction, if not, continuing to return to the detection T0< T1, and if the instruction exits, ending. It can be understood that when the air conditioner is in an indoor refrigeration-motor electric control heat dissipation-battery heat dissipation state, the indoor fan 1301 can be directly started to enter a ventilation state, whether T0 is less than T1 is judged, if so, the air conditioner module 1 is operated, the compressor 11, the indoor fan 1301, the outdoor fan 1201 and the first expansion valve 14 are started, if not, whether indoor refrigeration is not returned is judged, whether T0 is more than or equal to T1 is judged, if not, the air conditioner module 1 is continuously operated, if so, whether the battery heat dissipation module 3 is continuously operated is continuously judged, if the battery heat dissipation module 3 is operating, the first expansion valve 14 is closed, if the battery heat dissipation module 3 is not operated, only the ventilation state is maintained, if not, whether indoor refrigeration is returned is judged, if not, the detection T0 is continuously returned, and if so, the indoor refrigeration is stopped.
3. And when the temperature T2 is less than or equal to 30 ℃, stopping the motor electric control heat dissipation module 2, judging whether to exit the mode according to a control instruction, namely judging whether to exit the motor electric control heat dissipation according to the control instruction, returning to continuously detect T2 to be more than 30 ℃ if not, if not exiting, namely ending the instruction, and ending the instruction exit, wherein the T2 is controlled by the three-way valve 25 to control the flow of the cooling liquid from the motor electric control heat absorption module 23 to flow into the air cooling heat radiator 21 only, and cooling the cooling liquid in the air cooling heat radiator 21 by starting the outdoor fan 1201, and judging whether to exit the mode according to the control instruction.
4. And the heat dissipation requirement of the battery is judged to be T3< T4, and whether indoor refrigeration is operated or not is detected and judged.
1) If the indoor refrigeration is not operated, the battery heat dissipation module 3 is started, the battery heat dissipation driver 32, the compressor 11, the outdoor fan 1201 and the third expansion valve 16 are started, when T3 is more than or equal to T4 in the battery heat dissipation operation, the operation of all devices is stopped, whether the battery heat dissipation is stopped is judged according to the control instruction, if the control instruction does not exit the battery heat dissipation mode, whether T3 is less than T4 is continuously judged, and if the control instruction exits the battery heat dissipation mode, the operation is ended. It can be understood that whether the heat dissipation of the battery is exited is judged according to the control instruction, if not, whether T3< T4 is continuously judged, and if yes, the heat dissipation of the battery is exited.
2) If the indoor refrigerating system is in operation, the battery heat dissipation driver 32 and the third expansion valve 16 are started, when the fact that T3 is more than or equal to T4 is detected, the battery water pump and the third expansion valve 16 are stopped, finally whether the mode is exited or not is judged according to the control instruction, the detection T3< T4 is continued to be returned, the instruction is ended, namely whether the battery heat dissipation is exited is judged according to the control instruction, if not, the detection T3< T4 is continued to be returned, and if yes, the battery heat dissipation is exited.
And in the second mode, indoor heating and waste heat recovery.
The principle of the heating system is that the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure steam through the compressor 11 in combination with fig. 6 and 7, flows through the four-way reversing valve 17 and then enters the indoor heat exchange module 13 to release heat in a room (in a vehicle) through forced convection heat exchange of the indoor fan 1301, is condensed into a medium-temperature high-pressure liquid refrigerant, and then is divided into two branches, wherein the first branch is throttled into a low-temperature low-pressure liquid state through the first expansion valve 14, enters the outdoor heat exchanger 1202 to absorb heat and evaporate into a low-temperature low-pressure gaseous state, flows through the four-way reversing valve 17 and then is combined with the second branch before entering the gas-liquid separator 18, the medium-temperature high-pressure liquid refrigerant of the second branch is throttled into a low-temperature low-pressure liquid state through the second expansion valve 15 and enters the heat recovery heat exchanger 24 to absorb the heat of the motor electric control cooling liquid to evaporate into a low-temperature low-pressure gaseous state, and then reaches the gas-liquid separator 18 directly before being combined with the first branch, and then returns to the compressor 11 together.
The motor electric control heat dissipation principle is that, as shown in fig. 6 and 8, the cooling liquid is powered by the motor electric control heat dissipation driver 22 (water pump), the low-temperature cooling liquid flowing out of the heat recovery heat exchanger 24 is injected into the whole vehicle motor electric control heat absorption module 23, absorbs heat to become high-temperature cooling liquid, and then flows out, and flows into the heat recovery heat exchanger 24 through the three-way valve 25 to release heat to become low temperature. The second expansion water tank 34 is connected in parallel in the battery heat dissipation module 3, water is discharged before the motor electric control heat dissipation driver 22 to supplement water for the system, and water is discharged after the motor electric control heat absorption module 23 to perform an exhaust function.
The flow of the mode two is shown in fig. 10, and the specific logic is as follows:
1. The air conditioning module 1 enters an indoor heating-motor electric control heat dissipation-motor electric control waste heat recovery mode through a whole vehicle control instruction, the temperature T0 in the vehicle is set, the system enters a standby state, all devices are not started, the indoor temperature T1 and the outlet water temperature T4 are detected, and the heating requirement and the motor electric control heat dissipation requirement are respectively and independently judged to operate.
2. The heating requirement is judged to be T0 & gtT 1, the air conditioning module 1 is operated to enter indoor heating, namely, the compressor 11, the four-way reversing valve 17, the indoor fan 1301, the outdoor fan 1201 and the first expansion valve 14 are started, the indoor heating is stopped when T0 & ltoreq T1, if the control instruction does not exit the indoor heating mode, the continuous judgment is returned to be whether T0 & gtT 1, and if the control instruction exits the indoor heating mode, the mode is ended. It can be understood that when the indoor heating-motor electric control heat dissipation-motor electric control waste heat recovery state is achieved, whether T0 is larger than T1 is judged, if so, the heating system is operated, namely, the compressor 11, the four-way reversing valve 17, the indoor fan 1301, the outdoor fan 1201 and the first expansion valve 14 are started, when T0 is smaller than or equal to T1, the heating system is stopped, whether the heating is stopped is judged according to the control instruction, if not, whether T0 is larger than T1 is continuously judged, if not, the indoor heating is stopped, and if so, the continuous judgment is carried out.
3. The motor electric control heat dissipation requirement judges that T2 is more than 30 ℃, if so, the motor electric control heat dissipation module 2 is operated, the motor electric control heat dissipation driver 22 and the outdoor fan 1201 are started, the three-way valve 25 controls the flow of the cooling liquid which flows out of the motor electric control heat absorption module 23 to flow into the air cooling heat radiator 21 only, the cooling liquid is dissipated in the air cooling heat radiator 21 through the starting of the outdoor fan 1201, if T2 is less than or equal to 30 ℃, the indoor heating is judged to be operated, if not, the motor electric control heat dissipation module 2 is stopped, according to the control instruction, whether the motor electric control heat dissipation mode is exited is judged, if the heating system is operated, namely, if the indoor heating is operated, the motor electric control waste heat recovery is operated, the motor electric control heat dissipation driver 22 and the second expansion valve 15 are started, the three-way valve 25 controls the flow of the cooling liquid which flows out of the motor electric control heat absorption module 23 to flow into the heat recovery heat exchanger 24 only, the cooling liquid is dissipated through the refrigerant, and if T2 is more than 30 ℃ in the process is detected, the three-way valve 25 is reversed, and the air cooling heat radiator 21 is returned.
The invention also provides a vehicle, which comprises the vehicle thermal management integrated system and the vehicle thermal management integrated control method, and can be of the types of pure electric buses, logistics vehicles, trucks, engineering vehicles and the like, and the vehicle can achieve the technical effects introduced above.
The invention integrates the functions of electric control heat dissipation and battery heat dissipation of the motor with an automobile air conditioning system, and can perform electric control heat dissipation and battery heat dissipation of the motor while refrigerating the air conditioner, and can also perform electric control heat dissipation of the motor while heating the air conditioner, and can recover the heat of the motor.
The vehicle adopting the vehicle thermal management integrated system can achieve the following effects:
1. And the space optimization is realized by integrating the electric control heat dissipation system and the battery heat dissipation system of the motor into the air conditioning system, so that the occupied space of an independent system in the vehicle is reduced, more space in the vehicle is released, and the flexibility of the internal layout of the vehicle is improved.
2. The integrated system reduces extra components and pipelines, reduces the weight of the whole vehicle, and is beneficial to improving the energy efficiency and performance of the vehicle. And simultaneously, the manufacturing and maintenance cost is reduced, because the investment of materials and manpower can be reduced by sharing one system.
3. The energy efficiency is improved, namely the system control logic is optimized, so that the heat of the motor can be recovered while the air conditioner heats, the energy utilization efficiency is improved, and the energy efficiency and the comfort of the system are further enhanced.
4. System compatibility, the integrated system design improves the compatibility with different vehicle types, and is convenient for application and popularization on various vehicle types.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
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| US20190381857A1 (en) * | 2018-06-15 | 2019-12-19 | Hyundai Motor Company | Heat pump system for vehicle |
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| WO2024152672A1 (en) * | 2023-01-18 | 2024-07-25 | 珠海格力电器股份有限公司 | Vehicle air conditioner integrated with battery thermal management, and control method therefor |
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| CN106828015A (en) * | 2017-01-13 | 2017-06-13 | 深圳市科泰新能源车用空调技术有限公司 | A kind of air conditioning for automobiles and battery joint thermal control system |
| US20190381857A1 (en) * | 2018-06-15 | 2019-12-19 | Hyundai Motor Company | Heat pump system for vehicle |
| CN110588280A (en) * | 2019-08-26 | 2019-12-20 | 上海理工大学 | New energy vehicle thermal management system integrating three heat management and waste heat recovery functions |
| CN115465040A (en) * | 2022-07-28 | 2022-12-13 | 青岛朗进新能源设备有限公司 | Vehicle-mounted air conditioner heat pump system with waste heat recovery function |
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