CN119611009B - Vehicle thermal management integrated system, vehicle thermal management integrated control method and vehicle - Google Patents
Vehicle thermal management integrated system, vehicle thermal management integrated control method and vehicleInfo
- Publication number
- CN119611009B CN119611009B CN202411865508.8A CN202411865508A CN119611009B CN 119611009 B CN119611009 B CN 119611009B CN 202411865508 A CN202411865508 A CN 202411865508A CN 119611009 B CN119611009 B CN 119611009B
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- China
- Prior art keywords
- heat exchange
- battery
- heat
- motor
- expansion valve
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Classifications
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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
-
- 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
Landscapes
- 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, wherein when the vehicle is in indoor heating, electric control heat dissipation of a motor and heat dissipation of a battery are carried out, refrigerant flowing out of an indoor heat exchange unit can be divided into three paths, wherein a first path flows to an outdoor heat exchange unit through a first expansion valve to heat, a second path flows to a heat recovery heat exchanger through a second expansion valve to cool a motor electric control module, so that heat of the motor electric control module is brought back to a compressor to be utilized to indoor heating, a third path flows to a battery heat dissipation heat exchanger through a second control valve and a third expansion valve to cool the battery module, heat of the battery module is brought back to the compressor to be utilized to indoor heating, when the vehicle is in indoor heating, heat of a motor electric control module and a battery is utilized to indoor heating, energy waste is reduced, the air conditioner heat exchange module, the battery heat exchange module and the motor electric control heat exchange module are integrally coupled, extra components and pipelines are reduced, the overall weight of the system can be reduced, and the energy efficiency and the performance of the vehicle are improved.
Description
Technical Field
The invention relates to the technical field of vehicle thermal management, in particular to a vehicle thermal management integrated system, a vehicle thermal management integrated control method and a vehicle.
Background
The existing automobile air conditioning system realizes the refrigeration or heating of the interior of the automobile by circulating the refrigerant through a compressor, an outdoor heat exchanger, an outdoor fan, a throttle valve, an indoor heat exchanger, an indoor fan and the like. The whole car motor and the electric control thereof cool the motor and the electric control thereof by circulating cooling liquid through a water pump, a water tank, a heat exchanger, a fan and the like, and the two systems respectively and independently run. The whole battery cooling system is an independent system, and the whole 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 an air conditioning system and a motor electric control cooling system respectively and independently operate, the structures of the systems are mutually independent, the weight of a vehicle is increased, the cost is higher, and when the vehicle is required to be heated in winter, the motor electric control and the heat of a battery cannot be utilized to heat the vehicle, so that the energy waste is caused.
For those skilled in the art, how to integrate an air conditioning system and an electric motor control cooling system, reduce the overall weight of the system, and recycle the heat of the electric motor control and the battery, thereby reducing energy waste is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a vehicle thermal management integrated system, which can reduce the overall weight of the system, and can use the electric control of a motor and the waste heat recovery of a battery for indoor heating during heating, thereby reducing energy waste. The specific scheme is as follows:
A vehicle thermal management integrated system comprises an air conditioner heat exchange module, a battery heat exchange module and a motor electric control heat exchange module;
The air conditioner heat exchange module comprises a heat pump air conditioner loop formed by a compressor, a four-way reversing valve, an outdoor heat exchange unit, a first expansion valve and an indoor heat exchange unit, and further comprises a second expansion valve, a third expansion valve, a first control valve and a second control valve, wherein one end of the second expansion valve is connected between the indoor heat exchange unit and the first expansion valve, and the other end of the second expansion valve is connected with an air suction port of the compressor;
the battery heat exchange module comprises a battery heat dissipation heat exchanger, one flow passage of the battery heat dissipation heat exchanger is connected between the third expansion valve and the air suction port, and the other flow passage is used for being connected with a battery heat exchange unit in series so as to cool the battery module through heat exchange between the two flow passages of the battery heat dissipation heat exchanger;
The motor electric control heat exchange module comprises a heat recovery heat exchanger, one flow passage of the heat recovery heat exchanger is connected between the second expansion valve and the air suction port, and the other flow passage is used for being connected with the motor electric control heat exchange unit in series so as to cool the motor electric control module through heat exchange between the two flow passages of the heat recovery heat exchanger.
Optionally, the battery heat exchange module further comprises a battery heat dissipation driver, wherein a runner of the battery heat dissipation heat exchanger, the battery heat dissipation driver and the battery heat exchange unit are sequentially connected in series to a battery main pipeline, and the battery heat dissipation driver is used for driving cooling liquid to flow.
Optionally, the battery heat exchange module further comprises a battery expansion water tank which is arranged in parallel with the battery main pipeline, and the battery main pipeline is provided with a water outlet temperature sensor.
Optionally, the electric motor heat exchange module further comprises an air cooling radiator and an electric motor heat dissipation driver, the air cooling radiator, the electric motor heat dissipation driver and the electric motor heat exchange unit are sequentially connected in series to the electric motor main pipeline, the air cooling radiator cools down by means of an outdoor fan of the outdoor heat exchange unit, and the electric motor heat dissipation driver is used for driving cooling liquid to flow.
Optionally, the electric control heat exchange module of the motor further comprises a three-way valve, one flow channel of the heat recovery heat exchanger is communicated with the electric control heat exchange unit of the motor through a first interface and a second interface of the three-way valve, and the air cooling radiator is communicated with the electric control heat exchange unit of the motor through a first interface and a third interface of the three-way valve.
Optionally, the motor electric control heat exchange module further comprises a motor electric control expansion water tank connected in parallel with the motor electric control main pipeline, and the motor electric control main pipeline is provided with a water inlet temperature sensor.
Optionally, the first control valve is a one-way valve, an inlet end of the first control valve is connected between the first expansion valve and the outdoor heat exchange unit, and an outlet end of the first control valve is connected between the second control valve and the third expansion valve;
the second control valve is a one-way valve, the inlet end of the second control valve is connected between the indoor heat exchange unit and the first expansion valve, and the outlet end of the second control valve is connected between the first control valve and the third expansion valve.
Optionally, the air conditioner heat exchange module further comprises a gas-liquid separator, a dry filter and a pressure sensor;
the air-liquid separator is connected between the air suction port and the four-way reversing valve, the drying filter is connected between the outdoor heat exchange unit and the first expansion valve, and the air suction port side and the air exhaust port side of the compressor are respectively provided with one pressure sensor.
The invention also provides a vehicle heat management integrated control method, which sets the temperature T0 in the vehicle and the temperature T3 of the battery, detects the indoor temperature T1, the water inlet temperature T2 and the water outlet temperature T4,
When the indoor heating mode, the motor electric control heat dissipation mode and the battery heat dissipation mode are in, judging whether T0 is more than T1, if so, running the indoor heating, starting a compressor, a four-way reversing valve, an indoor fan of an indoor heat exchange unit, an outdoor fan of an outdoor heat exchange unit and a first expansion valve, when T0 is less than or equal to T1, stopping the indoor heating, judging whether to exit the heating mode according to a control instruction, if not, returning to continuously judge whether T0 is more than T1, and if so, ending the indoor heating.
Optionally, judging whether T2 is more than 30 ℃, if so, running the motor to perform electric heat dissipation, starting the motor electric heat dissipation driver and the outdoor fan, controlling the flow direction of the cooling liquid flowing out of the motor electric heat exchange unit by the three-way valve to flow into the air-cooled radiator, and performing heat dissipation on the cooling liquid by the outdoor fan;
And if the indoor heating operation is performed, the motor electric control waste heat recovery is performed, the motor electric control heat dissipation driver and the second expansion valve are started, and the three-way valve controls the flow of cooling liquid flowing out of the motor electric control heat exchange unit to flow into the heat recovery heat exchanger, so that the cooling liquid is subjected to heat dissipation through the refrigerant.
Optionally, judging whether T3 is less than T4, if so, detecting whether indoor heating is operated, if not, starting a battery to dissipate heat, starting a battery heat dissipation driver, a compressor, an outdoor fan and a third expansion valve, and stopping all devices when T3 is more than or equal to T4 in the battery heat dissipation operation;
the method comprises the steps of starting a battery heat dissipation driver and a third expansion valve if indoor heating 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, returning to continuously judge whether T3 is less than T4 if a control instruction does not exit battery heat dissipation, and ending battery heat dissipation if the control instruction exits battery heat dissipation.
Optionally, when the indoor cooling mode, the motor electric control cooling mode and the battery cooling mode are adopted, the indoor fan is directly started to enter a ventilation state, whether T0 is less than T1 is judged, if so, the air conditioner heat exchange module is operated, and the compressor, the indoor fan, the outdoor fan and the first expansion valve are started;
Judging whether T0 is more than or equal to T1, if not, continuing to operate the air conditioner heat exchange module, if so, continuing to judge whether the battery heat exchange module operates, if so, closing the first expansion valve, and if the battery heat exchange module stops operating, only maintaining a ventilation state;
Judging whether to exit indoor refrigeration, if not, returning to continuously detect T0< T1, and if so, ending indoor refrigeration.
Optionally, judging whether T2 is more than 30 ℃, if so, running the motor electric control heat dissipation, starting the motor electric control heat dissipation driver and the outdoor fan, controlling the flow direction of the cooling liquid flowing out of the motor electric control heat exchange unit to flow into the air cooling heat radiator only by the three-way valve, and starting the outdoor fan to dissipate heat of the cooling liquid, if T2 is less than or equal to 30 ℃, stopping the motor electric control heat dissipation, judging whether to withdraw from the motor electric control heat dissipation according to the control instruction, if not, returning to continuously judging whether T2 is more than 30 ℃, and if so, ending the motor electric control heat dissipation.
Optionally, judging whether T3 is less than T4, and detecting whether indoor refrigeration is operated;
if the indoor refrigeration is not operated, the battery heat exchange module is started to enter battery heat dissipation, a battery heat dissipation driver, a compressor, an outdoor fan and a 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 cooling driver and a third expansion valve when indoor refrigeration operation is performed, stopping the battery cooling driver and the third expansion valve when T3 is detected to be more than or equal to T4, judging whether to exit battery cooling according to a control instruction, if not, returning to continuously judge whether T3 is less than T4, and if so, ending battery cooling.
The invention also provides a vehicle, which comprises the vehicle heat management integrated system and the vehicle heat management integrated control method.
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 is characterized in that an air conditioner heat exchange module, a battery heat exchange module and a motor electric control heat exchange module are integrated and coupled, when the vehicle heat management integrated system is in an indoor heating mode, a motor electric control heat dissipation mode and a battery heat dissipation mode, a refrigerant flowing out of an indoor heat exchange unit can be divided into three paths, wherein a first path flows to an outdoor heat exchange unit through a first expansion valve to heat, a second path flows to a heat recovery heat exchanger through a second expansion valve to cool the motor electric control module so as to bring heat of the motor electric control module back to a compressor to be utilized to indoor heating, and a third path flows to a battery heat dissipation heat exchanger through a second control valve and a third expansion valve to cool the battery module so as to bring heat of the battery module back to the compressor to be utilized to indoor heating. In addition, the air conditioner heat exchange module, the battery heat exchange module and the motor electric control heat exchange module are integrated and coupled, so that additional components and pipelines are reduced, the overall weight of the system can be reduced, and the energy efficiency and performance of the vehicle can be improved.
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 an indoor heating mode, a motor electric control heat dissipation mode, and a battery heat dissipation mode;
FIG. 3 is a schematic view highlighting the indoor heating of FIG. 2;
FIG. 4 is a schematic view highlighting heat dissipation from the battery of FIG. 2;
FIG. 5 is a schematic diagram highlighting the electronically controlled air-cooled heat dissipation of the motor of FIG. 2;
FIG. 6 is a schematic diagram highlighting the electric control waste heat recovery of the motor of FIG. 2;
FIG. 7 is a schematic diagram of an indoor cooling mode, a motor electrically controlled cooling mode, and a battery cooling mode;
FIG. 8 is a schematic drawing highlighting the indoor refrigeration of FIG. 7;
FIG. 9 is a schematic diagram highlighting heat dissipation from the battery of FIG. 7;
FIG. 10 is a schematic diagram highlighting the electronically controlled heat dissipation of the motor of FIG. 7;
FIG. 11 is a logic diagram of an indoor heating integrated motor and battery waste heat recovery control;
fig. 12 is a logic diagram of the control of the electric control heat dissipation and the battery heat dissipation of the indoor refrigeration integrated motor.
The drawings include:
The air conditioner heat exchange module 1, the compressor 11, the indoor heat exchange unit 12, the indoor fan 121, the indoor heat exchanger 122, the outdoor heat exchange unit 13, the outdoor fan 131, the outdoor heat exchanger 132, the first expansion valve 141, the second expansion valve 142, the third expansion valve 143, the first control valve 151, the second control valve 152, the four-way reversing valve 16, the gas-liquid separator 17, the dry filter 18 and the pressure sensor 19;
the device comprises a battery heat exchange module 2, a battery heat dissipation heat exchanger 21, a battery heat dissipation driver 22, a battery heat exchange unit 23, a battery expansion water tank 24 and a water outlet temperature sensor 25;
the heat exchange system comprises a motor electric control heat exchange module 3, an air-cooled radiator 31, a motor electric control heat dissipation driver 32, a motor electric control heat exchange unit 33, a heat recovery heat exchanger 34, a three-way valve 35, a motor electric control expansion water tank 36 and a water inlet temperature sensor 37.
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 including the system 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 conditioner heat exchange module 1 and a battery heat exchange module 2, wherein the air conditioner heat exchange module 1 and the battery heat exchange module 2 are mutually integrated and coupled, and the heat dissipation of the battery heat exchange module 2 is beneficial to reducing the length of a pipeline by virtue of the air conditioner heat exchange module 1, so that the reuse of heat dissipation devices is realized, and the effect of reducing the weight of the structure is achieved. Through the design of check valve, both satisfied the refrigeration demand, can be when indoor heating again with the waste heat transfer of battery heat transfer module 2 indoor, reduce the energy consumption.
Referring to fig. 1, in the integrated vehicle heat management system provided by the invention, an air conditioner heat exchange module 1 comprises a compressor 11, a four-way reversing valve 16, an indoor heat exchange unit 12, an outdoor heat exchange unit 13, a first expansion valve 141, a third expansion valve 143, a first control valve 151, a second control valve 152 and other devices, wherein each device is respectively arranged on a corresponding pipeline, the inside of the pipeline of the air conditioner heat exchange module 1 is filled with a refrigerant, heat is transferred through the flow of the refrigerant, and the devices are matched with the refrigerant to realize the switching of different modes of indoor refrigeration and indoor heating. It will be appreciated that the air conditioning heat exchange module 1 includes a heat pump air conditioning circuit consisting of a compressor 11, a four-way reversing valve 16, an outdoor heat exchange unit 13, a first expansion valve 141, and an indoor heat exchange unit 12. The four-way reversing valve 16 has four interfaces respectively connected to the outlet end (exhaust port) and the inlet end (suction port) of the compressor 11, the indoor heat exchange unit 12 and the outdoor heat exchange unit 13, and the four-way reversing valve 16 is used for switching the flow direction of the refrigerant, so that the refrigerant can operate in different flow directions, i.e. switching between a refrigerating mode and a heating mode can be realized. More specifically, as shown in fig. 1, the four interfaces of the four-way reversing valve 16 are a first interface to a fourth interface, respectively, the exhaust port of the compressor 11 is connected with the first interface, the second interface is connected with one end of the outdoor heat exchange unit 13, the other end of the outdoor heat exchange unit 13 is connected with one end of the first expansion valve 141, the other end of the first expansion valve 141 is connected with one end of the indoor heat exchange unit 12, the other end of the indoor heat exchange unit 12 is connected with the third interface, the fourth interface is connected with the air suction port of the compressor 11, the first interface is conducted with the second interface and the third interface is conducted with the fourth interface when indoor refrigeration, and the first interface is conducted with the third interface and the second interface is conducted with the fourth interface when indoor heating.
The inlet end of the indoor heat exchange unit 12 and the inlet end of the outdoor heat exchange unit 13 are connected in parallel to the outlet end (exhaust port) of the compressor 11, the outlet end (exhaust port) of the compressor 11 is selectively connected to the indoor heat exchange unit 12 or the outdoor heat exchange unit 13, the inlet end (suction port) of the compressor 11 is selectively connected to the outdoor heat exchange unit 13 or the indoor heat exchange unit 12, in connection with fig. 2, during indoor heating, the outlet end of the compressor 11 is connected to the indoor heat exchange unit 12, the refrigerant flows to the indoor heat exchange unit 12 first and then to other devices, the inlet end of the compressor 11 is connected to the outlet end of the outdoor heat exchange unit 13, and the refrigerant flowing out of the outdoor heat exchange unit 13 flows back to the compressor 11 through the inlet end of the compressor 11. Referring to fig. 7, during indoor cooling, the outlet end of the compressor 11 is connected to the outdoor heat exchange unit 13, the refrigerant flows to the outdoor heat exchange unit 13 and then flows to other devices, the inlet end of the compressor 11 is connected to the outlet end of the indoor heat exchange unit 12, and the refrigerant flowing out of the indoor heat exchange unit 12 flows back to the compressor 11 through the inlet end of the compressor 11. It will be appreciated that the inlet and outlet ends are a relative concept that will vary depending on the direction of refrigerant inflow and outflow of the associated refrigeration device in either the cooling or heating mode, such as the inlet end of the indoor heat exchange unit 12 during indoor refrigeration, i.e., the outlet end of the indoor heat exchange unit 12 during indoor heating. The inflow and outflow directions of the refrigerant of the compressor 11 are not changed by switching between the cooling and heating modes, that is, the outlet end of the compressor 11 is always the discharge port and the inlet end is always the suction port.
The indoor heat exchange unit 12, the outdoor heat exchange unit 13 and the first expansion valve 141 are connected in series on the main pipeline of the air conditioner, the first expansion valve 141 is connected on the pipeline between the indoor heat exchange unit 12 and the outdoor heat exchange unit 13, during indoor heating, the refrigerant flowing out of the indoor heat exchange unit 12 flows to the outdoor heat exchange unit 13 after passing through the first expansion valve 141 and finally flows back to the compressor 11 to form circulation, and during indoor cooling, the refrigerant flowing out of the outdoor heat exchange unit 13 flows to the indoor heat exchange unit 12 after passing through the first expansion valve 141 and finally flows back to the compressor 11 to form circulation.
The flow direction of the refrigerant flowing through the indoor heat exchange unit 12, the outdoor heat exchange unit 13 and the first expansion valve 141 in the pipeline is different according to different modes of indoor cooling and indoor heating, and the compressor 11 is a device for driving the refrigerant to flow, and in the two modes of indoor cooling and indoor heating, the direction of the refrigerant flowing through the compressor 11 is unchanged, namely, the refrigerant flows into the compressor 11 from the air suction port and flows out of the compressor 11 from the air discharge port.
Specifically, the indoor heat exchange unit 12 includes an indoor fan 121 and an indoor heat exchanger 122, the indoor heat exchanger 122 is connected to the main air conditioning pipeline, that is, the indoor heat exchanger 122 is connected between the first expansion valve 141 and the third port of the four-way reversing valve 16, and the indoor fan 121 is used for blowing air flow to the indoor heat exchanger 122, so that forced convection heat exchange occurs between the indoor heat exchanger 122 and indoor air. The outdoor heat exchange unit 13 includes an outdoor fan 131 and an outdoor heat exchanger 132, wherein the outdoor heat exchanger 132 is connected to the air conditioner main pipeline, that is, the outdoor heat exchanger 132 is connected between the first expansion valve 141 and the second port of the four-way reversing valve 16, and the outdoor fan 131 is used for blowing air flow to the outdoor heat exchanger 132, so that the outdoor heat exchanger 132 performs forced convection heat exchange with outdoor air. The indoor heat exchanger 122 and the outdoor heat exchanger 132 can adopt coil heat exchangers, and can be matched with fins to increase the heat exchange area and improve the heat dissipation efficiency, that is, the indoor heat exchanger 122 and the outdoor heat exchanger 132 can adopt coil heat exchangers and the like.
Referring to fig. 1, the second control valve 152 and the third expansion valve 143 are sequentially connected in series, and the second control valve 152 and the third expansion valve 143 are located in a pipeline different from the main pipeline of the air conditioner and are equivalent to being connected in parallel with the main pipeline of the air conditioner. The inlet end of the second control valve 152 is connected between the indoor heat exchange unit 12 and the first expansion valve 141, that is, the inlet end of the second control valve 152 is connected between the indoor heat exchanger 122 and the first expansion valve 141, and as shown in fig. 2 and 3, the refrigerant flowing out of the indoor heat exchanger 122 may flow to both the first expansion valve 141 and the second control valve 152. The outlet end of the second control valve 152 is connected to the third expansion valve 143, the refrigerant flowing out of the second control valve 152 flows into the third expansion valve 143, the third expansion valve 143 is further connected to the suction port of the compressor 11, that is, the third expansion valve 143 is further connected to the suction port of the compressor 11, and the refrigerant flowing out of the third expansion valve 143 finally flows back to the compressor 11.
The first control valve 151 has an inlet connected between the first expansion valve 141 and the outdoor heat exchange unit 13 and an outlet connected between the second control valve 152 and the third expansion valve 143, and allows the refrigerant at the node between the first expansion valve 141 and the outdoor heat exchange unit 13 to flow through the first control valve 151 by opening and closing the valves, and is not reversely conducted. Specifically, an inlet end of the first control valve 151 is connected between the first expansion valve 141 and the outdoor heat exchanger 132.
As shown in fig. 1, the battery heat exchange module 2 includes a battery heat dissipation heat exchanger 21, one flow passage of the battery heat dissipation heat exchanger 21 is connected between the third expansion valve 143 and the air suction port of the compressor, and the other flow passage is used for being connected in series with the battery heat exchange unit 23, and the cooling liquid in the battery heat exchange unit 23 can absorb the heat of the battery module so as to cool the battery module through the heat exchange between the two flow passages of the battery heat dissipation heat exchanger 21. The battery heat exchange module 2 further comprises a battery heat dissipation driver 22, a runner of the battery heat dissipation heat exchanger 21, the battery heat dissipation driver 22 and a battery heat exchange unit 23 are sequentially connected in series to a battery main pipeline, and the battery heat dissipation driver 22 is used for driving cooling liquid to flow. It is understood that the battery heat exchange module 2 may include a battery heat dissipation heat exchanger 21, a battery heat dissipation driver 22, a battery heat exchange unit 23, and the like, which are sequentially connected in series to the battery main pipeline. The battery heat dissipation heat exchanger 21 is internally provided with two mutually independent flow passages which can mutually exchange heat and are respectively connected with the air conditioner heat exchange module 1 and the battery heat exchange module 2. The battery heat-dissipating heat exchanger 21 may be used for heat exchange between the low-temperature refrigerant and the high-temperature coolant, and the high-temperature coolant output by the battery heat-exchanging unit 23 is subjected to heat exchange between two flow channels of the battery heat-dissipating heat exchanger 21, and the heat carried by the high-temperature coolant is transferred to the low-temperature refrigerant flowing out from the third expansion valve 143, thereby obtaining the low-temperature coolant. The battery heat dissipation driver 22 is used for driving the cooling liquid to flow and providing flowing power for the cooling liquid in the battery heat exchange module 2. The battery heat exchange unit 23 can contact the battery module, heat generated in the charging and discharging processes of the battery module is transferred to cooling liquid of the battery heat exchange module 2 through the battery heat exchange unit 23, namely, heat generated in the charging and discharging processes of the battery module can be taken away when the cooling liquid flows through the battery heat exchange unit 23, the heat is transferred to refrigerant of the air conditioner heat exchange module 1 when the cooling liquid flows through the battery heat dissipation heat exchanger 21, the battery heat exchange module 2 does not need to be provided with an additional air cooling heat dissipation unit, the heat is dissipated (transferred) to the refrigerant of the air conditioner heat exchange module 1 by means of the battery heat dissipation heat exchanger 21, the heat transfer process can be operated during indoor heating, recycling of battery waste heat is achieved, and the waste heat of the battery participates in indoor heating, so that energy consumption can be reduced. The battery heat-dissipating heat exchanger 21 includes two heat-exchanging flow paths, one of which is connected to the air-conditioning heat-exchanging module 1, that is, connected in series between the third expansion valve 143 and the air inlet of the compressor 11, and the other of which is connected between the battery heat-exchanging unit 23 and the battery heat-dissipating driver 22. The battery heat-dissipating heat exchanger 21 may be a plate heat exchanger.
The vehicle thermal management integrated system provided by the invention further comprises the motor electric control heat exchange module 3, and the motor electric control heat exchange module 3 can be of a structure independent of the air conditioner heat exchange module 1 and the battery heat exchange module 2. It can be understood that the medium in the three pipelines of the air conditioner heat exchange module 1, the battery heat exchange module 2 and the motor electric control heat exchange module 3 are mutually independent, and only heat transfer occurs.
As shown in fig. 1, the air-conditioning heat exchange module 1 further includes a second expansion valve 142, where the second expansion valve 142 may be disposed on an independent pipeline, and used as a bypass device, one end of the second expansion valve 142 is connected between the indoor heat exchanger 122 of the indoor heat exchange unit 12 and the first expansion valve 141, and the other end of the second expansion valve is connected to the air suction port of the compressor 11, that is, the second expansion valve 142 may be connected to the air suction port of the compressor 11, and the refrigerant flows out of the indoor heat exchanger 122 and then is split into three paths, and flows to the second control valve 152, the first expansion valve 141 and the second expansion valve 142 respectively, where the refrigerant flowing through the second expansion valve 142 finally flows back to the compressor 11.
The motor electric control heat exchange module 3 comprises a heat recovery heat exchanger 34, one flow passage of the heat recovery heat exchanger 34 is connected between the second expansion valve 142 and the air suction port of the compressor 11, the other flow passage is used for being connected with the motor electric control heat exchange unit 33 in series, and cooling liquid in the motor electric control heat exchange unit 33 can absorb heat of the motor electric control module so as to cool the motor electric control module through heat exchange between the two flow passages of the heat recovery heat exchanger 34.
Therefore, the integrated system for vehicle thermal management realizes the integrated arrangement of the air conditioner heat exchange module 1, the battery heat exchange module 2 and the motor electric control heat exchange module 3, reduces the occupied space of an independent system in a vehicle, releases more space in the vehicle, improves the internal layout flexibility of the vehicle, reduces additional components and pipelines, reduces the weight of the whole vehicle, and is beneficial to improving the energy efficiency and the performance of the vehicle. While also reducing manufacturing and maintenance costs. By means of the first control valve 151, the second control valve 152 and the pipeline design, waste heat of the battery can be recycled during indoor heating, so that the energy utilization rate is improved, and the energy efficiency and the comfort of the system are further improved. More specifically, when in the indoor heating mode, the motor electric control heat dissipation mode and the battery heat dissipation mode, the refrigerant flowing out of the indoor heat exchange unit 12 can be divided into three paths, wherein the first path flows to the outdoor heat exchange unit 13 through the first expansion valve 141 for heating, the second path flows to the heat recovery heat exchanger 34 through the second expansion valve 142 for cooling the motor electric control module, thereby bringing the heat of the motor electric control module back to the compressor 11 for heating indoors, and the third path flows to the battery heat dissipation heat exchanger 21 through the second control valve 152 and the third expansion valve 143 for cooling the battery module, thereby bringing the heat of the battery module back to the compressor 11 for heating indoors. In addition, the air conditioner heat exchange module, the battery heat exchange module and the motor electric control heat exchange module are integrated and coupled, so that additional components and pipelines are reduced, the overall weight of the system can be reduced, and the energy efficiency and performance of the vehicle can be improved.
The motor electric control heat exchange module 3 further comprises an air cooling radiator 31 and a motor electric control heat dissipation driver 32, wherein the air cooling radiator 31, the motor electric control heat dissipation driver 32 and the motor electric control heat exchange unit 33 are sequentially connected in series to a motor electric control main pipeline, the air cooling radiator 31 cools down by means of an outdoor fan 131 of the outdoor heat exchange unit 13, and the motor electric control heat dissipation driver 32 is used for driving cooling liquid to flow.
It can be understood that the electric motor control heat exchange module 3 may include an air-cooled radiator 31, an electric motor control heat dissipation driver 32, and an electric motor control heat exchange unit 33 sequentially connected in series to an electric motor control main pipeline, where the air-cooled radiator 31 may be disposed at one side of the outdoor fan 131, for example, at an air inlet side or an air outlet side of the outdoor fan 131, so that the air-cooled radiator 31 may be affected by airflow of the outdoor fan 131. The motor electric control heat exchange unit 33 can contact the motor electric control module, heat generated by the motor electric control module is transferred to the cooling liquid through the motor electric control heat exchange unit 33, and the motor electric control heat dissipation driver 32 is used for driving the cooling liquid to flow, namely, when the cooling liquid flows through the motor electric control heat exchange unit 33, heat generated by the motor electric control module can be taken away, heat is discharged when the cooling liquid flows through the air cooling radiator 31, and the heat of the motor electric control module is transferred to the outdoor air, so that air cooling heat dissipation is realized. The electric control heat exchange module 3 of the motor has part of structures which are integrated and coupled with the air conditioner heat exchange module 1, and is also beneficial to reducing the weight of the structure. The electric motor control heat exchange module 3 can also comprise a heat recovery heat exchanger 34 which is connected in parallel (connected in parallel) with the electric motor control main pipeline, two independent flow channels which can exchange heat mutually are arranged in the heat recovery heat exchanger 34, the two flow channels are respectively communicated with the electric motor control heat exchange module 3 and the air conditioner heat exchange module 1, and internal media are not exchanged, so that only heat transfer is realized. The heat recovery heat exchanger 34 can be used for heat exchange between the low-temperature refrigerant and the high-temperature cooling liquid, and heat generated by the motor electric control module is transferred to the refrigerant of the air conditioner heat exchange module 1 through the heat recovery heat exchanger 34, that is, the high-temperature cooling liquid output by the motor electric control heat exchange unit 33 is subjected to heat exchange between two flow channels of the heat recovery heat exchanger 34, and heat carried by the high-temperature cooling liquid is transferred to the low-temperature refrigerant flowing out from the second expansion valve 142, so that the low-temperature cooling liquid is obtained. The second expansion valve 142, the flow passage of the heat recovery heat exchanger 34 for communicating with the air conditioner heat exchange module 1, and the inlet end (suction port) of the compressor 11 are sequentially connected in series to recover the waste heat of the motor electronic control module. The heat recovery heat exchanger 34 may be a plate heat exchanger.
As can be seen from the above description, according to the present invention, by providing the heat recovery heat exchanger 34, the heat of the electric motor control heat exchange module 3 can be transferred to the refrigerant of the air conditioner heat exchange module 1 through the heat recovery heat exchanger 34. The process is carried out in an indoor heating mode, and waste heat generated by the motor electric control module is recycled, so that energy conservation and consumption reduction can be realized.
As shown in fig. 5 and 6, the heat recovery heat exchanger 34 is connected to one of the nodes of the motor electric control main pipeline, and a three-way valve 35 for controlling the on-off of the cooling liquid is provided, and the three-way valve 35 can switch the communication state of the three interfaces, so that only two of the three interfaces are communicated, and only one of the air-cooled heat exchanger 31 and the heat recovery heat exchanger 34 works at the same time, and the air-cooled heat exchanger 31 or the heat recovery heat exchanger 34 performs liquid-cooled heat dissipation. It can be understood that the electric motor control heat exchange module 3 further includes a three-way valve 35, one flow channel of the heat recovery heat exchanger 34 is communicated with the electric motor control heat exchange unit 33 through a first interface and a second interface of the three-way valve 35, and the air cooling radiator 31 is communicated with the electric motor control heat exchange unit 33 through a first interface and a third interface of the three-way valve 35.
The motor electric control heat exchange module 3 further comprises a motor electric control expansion water tank 36 connected in parallel with the motor electric control main pipeline, one end of the motor electric control expansion water tank 36 is connected to the front of the motor electric control heat dissipation driver 32 (water pump), the other end of the motor electric control expansion water tank is connected to the rear of the motor electric control heat exchange unit 33, water is discharged to supplement the motor electric control heat exchange module 3 before the motor electric control heat dissipation driver 32, and water is introduced to the rear of the motor electric control heat exchange unit 33 to perform an exhaust function. The electric control main motor pipeline is provided with a water inlet temperature sensor 37, and the water inlet temperature sensor 37 is arranged between the three-way valve 35 and the electric control motor heat exchange unit 33, so that the temperature of cooling liquid of the electric control motor heat exchange module 3 can be monitored in real time.
As shown in fig. 1, the first control valve 151 of the present invention may employ a check valve, that is, the first control valve 151 includes a first check valve having an inlet connected between the first expansion valve 141 and the outdoor heat exchange unit 13 and an outlet connected between the second control valve 152 and the third expansion valve 143. The second control valve 152 may also be a check valve, that is, the second control valve 152 includes a second check valve having an inlet end connected between the indoor heat exchange unit 12 and the first expansion valve 141 and an outlet end connected between the first control valve 151 and the third expansion valve 143. The two one-way valve structures are adopted, active control is not needed, logic control in an active process is omitted, and on-off of media in the pipeline is realized by utilizing the physical characteristics of the one-way valve.
On the basis of the scheme, the battery heat exchange module 2 further comprises a battery expansion water tank 24 which is arranged in parallel on the battery main pipeline, one end of the battery expansion water tank 24 is communicated with the front part of the battery heat dissipation driver 22 (water pump), the other end of the battery expansion water tank is communicated with the rear part of the battery heat exchange unit 23, water is discharged in front of the battery heat dissipation driver 22 to supplement water for the battery heat exchange module 2, and the discharged water plays a role in exhausting after the battery heat exchange unit 23. The main battery pipeline is provided with a water outlet temperature sensor 25, and the water outlet temperature sensor 25 is arranged behind the battery heat dissipation driver 22 and monitors the temperature of cooling liquid discharged by the battery heat dissipation driver 22 in real time.
The air conditioner heat exchange module 1 also comprises a gas-liquid separator 17, a drying filter 18 and a pressure sensor 19, wherein the gas-liquid separator 17 is connected between an air suction port of the compressor 11 and the four-way reversing valve 16, specifically, an outlet of the gas-liquid separator 17 is connected with the air suction port of the compressor 11, an inlet of the gas-liquid separator 17 is respectively connected with a fourth interface of the four-way reversing valve 16, a heat recovery heat exchanger 34 and a battery heat dissipation heat exchanger 21, three paths of refrigerants are converged before the gas-liquid separator 17, and the gas-liquid separator 17 performs gas-liquid separation and then returns to the compressor 11 so as to avoid the compressor 11 from being impacted by liquid. The dry filter 18 is connected between the outdoor heat exchange unit 13 and the first expansion valve 141, and the refrigerant passing through the first expansion valve 141 passes through the dry filter 18 and then flows to the outdoor heat exchanger 132 of the outdoor heat exchange unit 13. The suction port side and the discharge port side of the compressor 11 are provided with a pressure sensor 19, respectively, which can detect the refrigerant pressure at the discharge port and the inlet port of the compressor 11, respectively.
In combination with fig. 2,3, 4,5 and 6, the scheme can realize indoor heating and integrate motor waste heat recovery and battery waste heat recovery by adding two check valves (the first control valve 151 and the second control valve 152), and is specifically as follows:
1) As shown in fig. 2 and 3, the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure steam (gaseous refrigerant) by the compressor 11, flows through the four-way reversing valve 16, enters the indoor heat exchanger 122, releases heat by forced convection heat exchange of the indoor fan 121 in the vehicle, condenses into a medium-temperature high-pressure liquid refrigerant, and the refrigerant flowing out of the indoor heat exchanger 122 is divided into three branches:
the medium-temperature high-pressure liquid refrigerant of the first branch flows through the first expansion valve 141 to be throttled into low-temperature low-pressure liquid refrigerant (or gas-liquid mixture), at this time, the first control valve 151 is closed and does not flow due to the inlet-outlet pressure difference, the refrigerant flows through the dry filter 18 and then enters the outdoor heat exchanger 132, absorbs heat and evaporates into low-temperature low-pressure gaseous refrigerant, and then flows through the four-way reversing valve 16 and then merges with the second branch and the third branch before entering the gas-liquid separator 17.
The medium-temperature high-pressure liquid refrigerant of the second branch flows through the second expansion valve 142 to be throttled into low-temperature low-pressure liquid refrigerant (or gas-liquid mixture) to enter a flow passage of the heat recovery heat exchanger 34 for circulating the refrigerant, absorbs the heat of the cooling liquid from the motor electric control heat exchange unit 33 to be evaporated into low-temperature low-pressure gaseous refrigerant, and directly reaches the gas-liquid separator 17 to be combined with the first branch and the third branch.
The medium-temperature high-pressure liquid refrigerant of the third branch flows through the second control valve 152, and at this time, the refrigerant in the pipeline between the indoor heat exchanger 122 and the three expansion valves is at high pressure and low pressure, so the second control valve 152 circulates, and the first control valve 151 does not circulate, so the liquid refrigerant (or gas-liquid mixture) of the third branch, after passing through the second control valve 152, throttled to low temperature and low pressure by the third expansion valve 143 enters the flow passage for circulating the refrigerant of the battery heat-dissipating heat exchanger 21, absorbs the heat of the cooling liquid from the battery heat-exchanging unit 23 and evaporates into the low temperature and low pressure gaseous refrigerant, and directly reaches the front of the gas-liquid separator 17 and merges with the first and second branches. The three branch refrigerants are converged and then enter the gas-liquid separator 17 to be mixed, and the mixed refrigerant returns to the compressor 11 to be recycled.
2) The motor electric control heat dissipation principle is that, as shown in fig. 2 and 5, the cooling liquid is powered by the motor electric control heat dissipation driver 32 (water pump), the low-temperature cooling liquid flowing out of the air cooling radiator 31 or the heat recovery heat exchanger 34 is injected into the whole vehicle motor electric control heat exchange unit 33, absorbs heat to be high-temperature cooling liquid and flows out, the high-temperature cooling liquid flows into the air cooling radiator 31 through the three-way valve 35, the low-temperature cooling liquid is forced to be released by convection through the outdoor fan 131 and then returns to the motor electric control heat dissipation driver 32 to be continuously circulated, or the three-way valve 35 flows into the heat recovery heat exchanger 34 to enable the high-temperature cooling liquid to be cooled to be low-temperature cooling liquid through heat exchange with the refrigerant and then returns to the motor electric control heat dissipation driver 32 to be continuously circulated. The motor electric control expansion water tank 36 is connected in parallel in a pipeline of the motor electric control heat exchange module 3, water is discharged before the motor electric control heat dissipation driver 32 to supplement water for the motor electric control heat exchange module 3, and water is discharged after the motor electric control heat exchange unit 33 to perform an exhaust function.
3) The battery cooling principle is that, in combination with fig. 2 and 4, battery cooling liquid is powered by a battery cooling driver 22 (water pump), the cooling liquid from the battery cooling heat exchanger 21 flows through a battery heat exchange unit 23 to absorb heat and cool the battery, and the cooling liquid returns to the battery cooling heat exchanger 21 to release heat to the refrigerant after absorbing the heat of the battery, and returns to the battery cooling driver 22 to circularly reciprocate. The battery expansion water tank 24 is connected in parallel in the battery heat exchange module 2, water is discharged in front of the battery heat dissipation driver 22 to supplement water for the battery heat exchange module 2, and water is discharged behind the battery heat exchange unit 23 to perform an exhaust function.
The invention also discloses a vehicle heat management integrated control method, wherein the flow of the control method for indoor heating is shown in figure 11, and the specific logic is as follows:
1. The air conditioner enters an indoor heating mode, a motor electric control heat dissipation mode and a battery heat dissipation mode through a whole vehicle control instruction, the temperature T0 and the battery temperature T3 in the vehicle are set, the system enters a standby state, and all devices are not started. And detecting the indoor temperature T1, the water inlet temperature T2 and the water outlet temperature T4, and then independently judging and operating according to the indoor heating requirement, the electric control heat dissipation requirement of the electric control heat dissipation motor of the motor and the heat dissipation requirement of the battery.
2. The heating requirement judges whether T0> T1, if so, the indoor heating is operated, namely, the air conditioner heat exchange module is operated, namely, the compressor 11, the four-way reversing valve 16, the indoor fan 121 of the indoor heat exchange unit 12, the outdoor fan 131 of the outdoor heat exchange unit 13 and the first expansion valve 141 are started, when T0 is less than or equal to T1, the indoor heating is stopped, whether the heating mode is exited or not is judged according to the control instruction, if the control instruction does not exit the heating mode, whether T0> T1 is continuously judged, if the control instruction exits the heating mode, the mode is ended, namely, whether the heating mode is exited or not is judged according to the control instruction, if not, whether T0> T1 is continuously judged, and if so, the indoor heating is ended.
3. The motor electric control heat dissipation requirement judges whether T2 is more than 30 ℃, if so, the motor electric control heat dissipation is operated, the motor electric control heat dissipation driver 32 and the outdoor fan 131 are started, the three-way valve 35 controls the flow of the cooling liquid flowing out of the motor electric control heat exchange unit 33 to flow into the air cooling radiator 31, the cooling liquid is dissipated in the air cooling radiator 31 through the outdoor fan 131, if T2 is less than or equal to 30 ℃, whether the indoor heating is operated is judged, if not, the motor electric control heat dissipation is stopped, if not, whether the motor electric control heat dissipation mode is exited is judged according to the control instruction, if the indoor heating is operated, the motor electric control waste heat recovery is operated, the motor electric control heat dissipation driver 32 and the second expansion valve 142 are started, the three-way valve 35 controls the flow of the cooling liquid flowing out of the motor electric control heat exchange unit 33 to flow into the heat recovery heat exchanger 34, the cooling liquid is dissipated through the refrigerant, if T2 is more than 30 ℃ in the process, the second expansion valve 142 is closed, the three-way valve 35 is commutated, and the cooling liquid is returned to the air cooling radiator 31.
4. Judging whether T3 is less than T4 or not according to the heat dissipation requirement of the battery, if so, detecting whether the indoor heating system is operated or not:
1) If the indoor heating is not operated, the battery cooling (heat dissipation) is started, the battery heat dissipation driver 22, the compressor 11, the outdoor fan 131 and the third expansion valve 143 are started, when T3 is more than or equal to T4 in the battery heat dissipation operation, all devices are stopped, if the control command does not exit the battery heat dissipation mode, that is, the control command does not exit the battery heat dissipation, the continuous judgment is returned to be whether T3< T4 is carried out, and if the control command exits the battery heat dissipation, the battery heat dissipation is ended.
2) If the indoor heating system is in operation, only the battery heat dissipation driver 22 and the third expansion valve 143 are started, when the fact that T3 is more than or equal to T4 is detected, the battery heat dissipation driver 22 and the third expansion valve 143 are stopped, finally whether the mode is exited or not is judged according to the control instruction, the detection of T3< T4 is continued, the instruction is exited, namely, if the control instruction does not exit the battery heat dissipation, whether T3< T4 is continued is returned, and if the control instruction exits the battery heat dissipation, the battery heat dissipation is ended.
Referring to fig. 7, 8, 9 and 10, the specific principle of indoor refrigeration-motor electric control heat dissipation-battery heat dissipation is as follows:
The principle of the indoor refrigeration system is that, in combination with fig. 7 and 8, 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 16 and then enters the outdoor heat exchanger 132, the heat is released by forced convection through the outdoor fan 131, the low-temperature low-pressure gaseous refrigerant is condensed into medium-temperature high-pressure liquid refrigerant, the medium-temperature high-pressure liquid refrigerant is divided into two paths after passing through the drying filter 18, the first branch flows through the first expansion valve 141 to be throttled into low-temperature low-pressure liquid refrigerant (or gas-liquid mixture), the low-temperature low-pressure liquid refrigerant enters the indoor heat exchanger 122 to absorb heat and evaporate into low-temperature low-pressure gaseous refrigerant, cold air is blown out through the indoor fan 121, and the low-temperature low-pressure gaseous refrigerant flows through the four-way reversing valve 16 and then merges with the second branch. The second branch passes through the first control valve 151, flows through the third expansion valve 143 to be throttled into low-temperature low-pressure liquid refrigerant (or gas-liquid mixture), enters the battery heat-dissipation heat exchanger 21 to absorb heat and evaporate into low-temperature low-pressure gaseous refrigerant, flows out and then is converged with the first branch before the gas-liquid separator 17 to enter the gas-liquid separator 17, and finally returns to the compressor 11 to continue circulating.
The motor electric control heat dissipation principle is that, in combination with fig. 7 and 10, the cooling liquid provides power through the motor electric control heat dissipation driver 32, low-temperature cooling liquid flowing out of the air cooling radiator 31 or the heat recovery heat exchanger 34 is injected into the whole vehicle motor electric control heat exchange unit 33, absorbs heat to be high-temperature cooling liquid and flows out, the high-temperature cooling liquid flows into the air cooling radiator 31 through the three-way valve 35, the low-temperature cooling liquid is forcedly convected and released through the outdoor fan 131 to be low-temperature cooling liquid and then returns to the motor electric control heat dissipation driver 32 to continuously circulate, or the three-way valve 35 flows into the heat recovery heat exchanger 34 to enable the high-temperature cooling liquid to be low-temperature cooling liquid through heat exchange with the refrigerant and then returns to the motor electric control heat dissipation driver 32 to continuously circulate.
The battery cooling principle is that, in combination with fig. 7 and 9, battery cooling liquid is powered by the battery cooling driver 22, the cooling liquid from the battery cooling heat exchanger 21 flows through the battery heat exchange unit 23 to absorb heat and cool the battery, and the cooling liquid is returned to the battery cooling heat exchanger 21 to release heat after absorbing the heat of the battery, and then returns to the battery cooling driver 22 to circularly reciprocate.
The flow of the indoor refrigeration control method is shown in fig. 12, and the specific logic is as follows:
1. the air conditioner heat exchange module 1 enters an indoor refrigeration mode, a motor electric control heat dissipation mode and a battery heat dissipation mode through a whole vehicle control instruction, the temperature T0 and the battery temperature T3 in the vehicle are set, the system enters a standby state, all devices are not started, the indoor temperature T1, the water inlet temperature T2 and the water outlet temperature T4 are detected, and then the indoor refrigeration requirement, the motor electric control heat dissipation requirement and the battery heat dissipation requirement are respectively and independently judged to operate.
2. The method comprises the steps of directly starting an indoor fan 121 in an indoor refrigeration mode to ventilate, detecting T0< T1, namely judging whether T0< T1 exists, operating an air conditioner heat exchange module, starting a compressor 11, the indoor fan 121, an outdoor fan 131 and a first expansion valve 141 if the T0< T1 exists, judging whether T0 is more than or equal to T1 if the T0 is more than or equal to T1 exists, continuously judging whether a battery heat exchange module 2 operates if the T0 is more than or equal to T1 exists, closing the first expansion valve 141 if the battery heat exchange module 2 operates, only keeping the ventilation state if the battery heat exchange module 2 stops operating, judging whether the T0< T1 exists or not according to a control instruction, continuously detecting the T0< T1 does not exist if the T0< T1 does not exist, ending if the T0< T1 continues to exist, judging whether the T0< T1 continues to exist or not exist, and ending the indoor refrigeration if the T0< T1 continues to exist.
3. And when the temperature T2 is less than or equal to 30 ℃, stopping the motor electric control heat dissipation, judging whether to exit the mode according to the control instruction, if not, returning to continuously judging whether to be more than 30 ℃ or not, and if yes, ending the motor electric control heat dissipation.
4. Judging whether T3 is less than T4 or not according to the heat dissipation requirement of the battery, and detecting whether indoor refrigeration is operated or not;
1) If the indoor refrigeration is not operated, the battery refrigeration is started, namely the battery heat exchange module 2 is started to enter the battery for heat dissipation, the battery heat dissipation driver 22, the compressor 11, the outdoor fan 131 and the third expansion valve 143 are started, when the battery refrigeration (heat dissipation) operation detects that T3 is more than or equal to T4, the operation of all devices is stopped, whether the battery heat dissipation is stopped is judged according to the control instruction, if not, whether T3 is less than T4 is continuously judged, and if yes, the battery heat dissipation is ended.
2) And when the detection of T3 is more than or equal to T4, stopping the battery heat dissipation driver 22 and the third expansion valve 143, judging whether to exit the battery heat dissipation according to the control instruction, if not, returning to continuously judge whether T3 is less than T4, and if so, ending the battery heat dissipation.
The invention also provides a vehicle, which comprises the vehicle thermal management integrated system and the vehicle thermal management integrated control method, and can realize the technical effects related to the vehicle thermal management integrated control method.
The invention integrates the functions of electric control heat dissipation and battery heat dissipation of the electric control heat dissipation motor of the motor with an automobile air conditioning system, and the two one-way valves are added to enable the air conditioner to heat indoors and simultaneously dissipate heat of the motor and the battery, and heat of the motor and the battery can be recovered and indirectly released indoors.
Has the following beneficial 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.
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| 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 |
| CN221392928U (en) * | 2023-11-08 | 2024-07-23 | 深圳市科泰新能源车用空调技术有限公司 | Air conditioner and vehicle |
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| KR102575170B1 (en) * | 2018-06-15 | 2023-09-05 | 현대자동차 주식회사 | Heat pump system for vehicle |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN221392928U (en) * | 2023-11-08 | 2024-07-23 | 深圳市科泰新能源车用空调技术有限公司 | Air conditioner and vehicle |
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