CN110091753B - Thermal management system for comprehensively managing energy consumption of electric vehicle - Google Patents
Thermal management system for comprehensively managing energy consumption of electric vehicle Download PDFInfo
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- CN110091753B CN110091753B CN201910275907.1A CN201910275907A CN110091753B CN 110091753 B CN110091753 B CN 110091753B CN 201910275907 A CN201910275907 A CN 201910275907A CN 110091753 B CN110091753 B CN 110091753B
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims description 28
- 239000003507 refrigerant Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 abstract description 31
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000010257 thawing Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 5
- 238000005338 heat storage Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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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
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a heat management system for comprehensively managing energy consumption of an electric vehicle, which comprises a compressor, an internal condenser, an external condenser, a first expansion valve, a second expansion valve, an evaporator, a vapor-liquid separator, a battery system, a PTC heater, a heat exchanger, a first power pump and a heat dissipation water tank, wherein the compressor, the internal condenser, the external condenser, the first expansion valve, the evaporator and the vapor-liquid separator are sequentially connected end to end, the external condenser is connected with the vapor-liquid separator, the external condenser, the second expansion valve, the heat exchanger and the vapor-liquid separator are sequentially connected, the first power pump, the PTC heater, a heat dissipation device of the battery system and the heat dissipation water tank are sequentially connected end to end, and the first power pump and the heat dissipation device of the battery system are. The heat management system for comprehensively managing the energy consumption of the electric vehicle comprehensively considers the energy consumption of refrigeration, heating, defrosting, battery system heat dissipation, heat recovery and the like, and improves the reliability and safety of vehicle operation.
Description
The application is a divisional application of a parent application named 'a heat management system of an electric vehicle' with the application number of 201610771237.9 and the application date of 2016, 8 and 30.
Technical Field
The invention relates to the technical field of thermal management systems, in particular to a thermal management system for comprehensively managing energy consumption of an electric vehicle.
Background
At present, the endurance mileage of an electric vehicle is the bottleneck of the development of the industry, and besides breaking through the existing battery technology, the whole vehicle energy consumption management and optimization are another implementable and optimized way. The existing energy management of the electric vehicle generally only considers partial single functions, some electric vehicles adopt a double-evaporator system for auxiliary heating, some electric vehicles adopt air cooling for heat dissipation of a battery, some electric vehicles adopt liquid cooling for heat dissipation of the battery, some electric vehicles adopt liquid cooling for heat dissipation of a motor and a power element, and some electric vehicles consider natural air cooling for heat dissipation of the motor and the power element.
The chinese patent application No. 201210511445.7 discloses a thermal management system, a battery thermal management system, an electric vehicle, and a hybrid vehicle, the thermal management system includes a heating and cooling circuit and a heat storage and cold accumulation circuit that performs heat exchange with the heating and cooling circuit, wherein a circulating medium in the heat storage and cold accumulation circuit is a phase change cold accumulation material, wherein when the heating and cooling circuit performs heating, the heating and cooling circuit stops heating when the temperature of the circulating medium in the heat storage and cold accumulation circuit is not lower than a phase change temperature, and when the heating and cooling circuit performs cooling, the heating and cooling circuit stops cooling when the temperature of the circulating medium in the heat storage and cold accumulation circuit is not higher than the phase change temperature. The thermal management system only considers energy management and control of a single component and system, resulting in greater risks to vehicle operational reliability and effectiveness.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the heat management system for comprehensively managing the energy consumption of the electric vehicle is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
a heat management system for comprehensively managing the energy consumption of an electric vehicle comprises a compressor, an internal condenser, an external condenser, a first expansion valve, a second expansion valve, an evaporator, a vapor-liquid separator, a battery system, a PTC heater, a heat exchanger, a first power pump and a heat dissipation water tank, the battery system is internally provided with a heat dissipation device, the compressor, the internal condenser, the external condenser, the first expansion valve, the evaporator and the vapor-liquid separator are sequentially connected end to end through a first pipeline, the external condenser is connected with the vapor-liquid separator through the first pipeline, the external condenser, the second expansion valve, the heat exchanger and the vapor-liquid separator are sequentially connected through the first pipeline, the first power pump, the PTC heater, the heat dissipation device of the battery system and the heat dissipation water tank are sequentially connected end to end through second pipelines, and the first power pump and the heat dissipation device of the battery system are respectively connected with the heat exchanger through the second pipelines.
The invention has the beneficial effects that: the compressor, the internal condenser, the external condenser, the first expansion valve, the evaporator and the vapor-liquid separator are sequentially connected end to end through the first pipeline, so that the refrigeration and heating switching in a carriage can be realized, the first power pump, the PTC heater, the heat dissipation device of the battery system and the heat dissipation water tank are sequentially connected end to end through the second pipeline, so that the heat dissipation can be carried out on the battery system when the temperature of the battery system is lower, when the temperature of the battery system is higher, the operation of the compressor and the first power pump can be controlled, so that the refrigerant in the first pipeline and the refrigerant in the second pipeline exchange heat in the heat exchanger, so as to cool the battery system, and when the battery system is started at low temperature and is charged and heated, the heat management system can be heated through the PTC heater The low-temperature heat dissipation of the battery system, the low-temperature starting of the battery system in winter, the auxiliary heating of charging and other energy consumption improve the reliability and the safety of the vehicle operation.
Drawings
Fig. 1 is a schematic structural diagram of a thermal management system for comprehensively managing energy consumption of an electric vehicle according to an embodiment of the present invention.
Description of reference numerals:
1. a compressor; 2. an internal condenser; 3. an external condenser; 4. a first expansion valve; 5. a second expansion valve; 6. an evaporator; 7. a vapor-liquid separator; 8. a battery system; 9. a PTC heater; 10. a heat exchanger; 11. a first power pump; 12. a heat radiation water tank; 13. a control unit; 14. an air conditioning heater; 15. a blower; 16. a cooling fan; 17. a first valve; 18. a second valve; 19. a second power pump; 20. a power element; 21. an electric motor; 22. an expansion kettle; 23. a two-way valve; 24. a throttle pipe; 25. a third valve; 26. and a fourth valve.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The most key concept of the invention is as follows: the energy consumption of refrigeration, heat pump heating, liquid cooling heat dissipation of the battery system, low-temperature starting of the battery system in winter, auxiliary heat dissipation of charging and the like is comprehensively managed, and the reliability and safety of vehicle operation are improved.
Referring to fig. 1, a heat management system for comprehensively managing energy consumption of an electric vehicle includes a compressor 1, an internal condenser 2, an external condenser 3, a first expansion valve 4, a second expansion valve 5, an evaporator 6, a vapor-liquid separator 7, a battery system 8, a PTC heater 9, a heat exchanger 10, a first power pump 11 and a heat dissipation water tank 12, wherein a heat dissipation device is disposed in the battery system 8, the compressor 1, the internal condenser 2, the external condenser 3, the first expansion valve 4, the evaporator 6 and the vapor-liquid separator 7 are sequentially connected end to end through a first pipeline, the external condenser 3 is connected with the vapor-liquid separator 7 through the first pipeline, the external condenser 3, the second expansion valve 5, the heat exchanger 10 and the vapor-liquid separator 7 are sequentially connected through the first pipeline, the first power pump 11, the PTC heater 9, the heat dissipation device of the battery system 8 and the heat dissipation water tank 12 are sequentially connected end to end through a second, the first power pump 11 and the heat sink of the battery system 8 are connected to the heat exchanger 10 via second pipes, respectively.
From the above description, the beneficial effects of the present invention are: the compressor, the internal condenser, the external condenser, the first expansion valve, the evaporator and the vapor-liquid separator are sequentially connected end to end through the first pipeline, so that the refrigeration and heating switching in a carriage can be realized, the first power pump, the PTC heater, the heat dissipation device of the battery system and the heat dissipation water tank are sequentially connected end to end through the second pipeline, so that the heat dissipation can be carried out on the battery system when the temperature of the battery system is lower, when the temperature of the battery system is higher, the operation of the compressor and the first power pump can be controlled, so that the refrigerant in the first pipeline and the refrigerant in the second pipeline exchange heat in the heat exchanger, so as to cool the battery system, and when the battery system is started at low temperature and is charged and heated, the heat management system can be heated through the PTC heater The low-temperature heat dissipation of the battery system, the low-temperature starting of the battery system in winter, the auxiliary heating of charging and other energy consumption improve the reliability and the safety of the vehicle operation.
Further, a control unit 13 is further included, and the first power pump 11 and the PTC heater 9 are electrically connected to the control unit 13, respectively.
As can be seen from the above description, the operation and shutdown of the first power pump and the PTC heater are controlled by the control unit.
Further, an air conditioner heater 14 and a blower 15 are further included, and the air conditioner heater 14 and the blower 15 are electrically connected to the control unit 13, respectively.
As can be seen from the above description, the air conditioner heater and the blower are respectively electrically connected to the control unit, when the temperature in the vehicle cabin is greater than the temperature in the vehicle, the control unit controls the air conditioner heater and the heat pump heating system to heat simultaneously, and when the temperature in the vehicle is less than the temperature in the vehicle, the heat pump heating system is used alone to heat.
Further, a cooling fan 16 is further included, the cooling fan 16 is disposed at one side of the external condenser 3, and the heat radiation water tank 12 is disposed at the other side of the external condenser 3.
As can be seen from the above description, the cooling fan is provided to transfer the heat in the heat dissipation water tank to the external condenser, so as to increase the heating capacity and reduce the possibility of frosting of the external condenser.
Further, the condenser further comprises a first valve 17 and a second valve 18, the external condenser 3 and the first expansion valve 4 are connected through the first valve 17, and the first valve 17 and the vapor-liquid separator 7 are connected through the second valve 18.
According to the above description, the first valve and the second valve are arranged, and the switching of working conditions such as heating, refrigeration, battery system heat dissipation and the like can be performed by controlling the on-off of the first valve and the second valve.
Further, still include second power pump 19, power component 20 and motor 21, be equipped with heat abstractor on power component 20 and the motor 21 respectively, second power pump 19, heat dissipation water tank 12 and power component 20's heat abstractor passes through the third pipeline end to end in proper order, and second power pump 19, heat dissipation water tank 12 and motor 21's heat abstractor passes through the third pipeline end to end in proper order.
As can be seen from the above description, the motor and the power element can dissipate heat through the heat dissipation water tank, and then transfer the heat in the heat dissipation water tank to the external condenser through the cooling fan, so as to recover the waste heat.
Further, the expansion water kettle 22 is further included, and the expansion water kettle 22 is arranged between the first power pump 11 and the heat dissipation water tank 12.
As can be seen from the above description, the provision of the expansion tank prevents the thermal management system from being damaged by a pipe explosion caused by an excessive pressure in the cooling system.
Further, the condenser also comprises a two-way valve 23 and a throttle pipe 24, wherein one end of the two-way valve 23 and one end of the throttle pipe 24 are respectively connected with the internal condenser 2, and the other end of the two-way valve 23 and the other end of the throttle pipe 24 are respectively connected with the external condenser 3.
Further, a third valve 25 is included, and the radiator tank 12, the heat exchanger 10 and the radiator of the battery system 8 are connected through the third valve 25.
Referring to fig. 1, a first embodiment of the present invention is:
a heat management system for comprehensively managing energy consumption of an electric vehicle comprises a compressor 1, an internal condenser 2, an external condenser 3, a first expansion valve 4, a second expansion valve 5, an evaporator 6, a vapor-liquid separator 7, a battery system 8, a PTC heater 9, a heat exchanger 10, a first power pump 11, a radiating water tank 12, a control unit 13, an air conditioning heater 14, an air blower 15, a cooling fan 16, a first valve 17, a second valve 18, a second power pump 19, a power element 20, a motor 21, an expansion water kettle 22, a two-way valve 23, a throttle pipe 24, a third valve 25 and a fourth valve 26. The battery system 8, the power element 20, and the motor 21 are provided with heat sinks, respectively. The first valve 17, the second valve 18, the third valve 25, and the fourth valve 26 are three-way valves, respectively.
The compressor 1, the internal condenser 2, the external condenser 3, the first expansion valve 4, the evaporator 6 and the vapor-liquid separator 7 are sequentially connected end to end through a first pipeline, one ends of the two-way valve 23 and the throttle pipe 24 are respectively connected with the internal condenser 2, and the other ends of the two-way valve 23 and the throttle pipe 24 are respectively connected with the external condenser 3.
The external condenser 3 is connected with the vapor-liquid separator 7 through a first pipeline, and the external condenser 3, the second expansion valve 5, the heat exchanger 10 and the vapor-liquid separator 7 are sequentially connected through the first pipeline. The first valve 17 and the second valve 18 are respectively provided on the first pipe between the external condenser 3 and the vapor-liquid separator 7, the external condenser 3, the first expansion valve 4, and the second valve 18 are respectively provided in communication through the first valve 17, and the vapor-liquid separator 7 and the second expansion valve 5 are respectively provided in communication with the second valve 18.
The first power pump 11, the PTC heater 9, the heat dissipation device of the battery system 8, the heat dissipation water tank 12 and the expansion kettle 22 are sequentially connected end to end through a second pipeline. The first power pump 11, the PTC heater 9, the heat dissipation device of the battery system 8 and the heat exchanger 10 are sequentially connected end to end through a second pipeline. A third valve 25 and a fourth valve 26 are respectively arranged on the second pipe between the radiator tank 12 and the battery system 8. The heat dissipation water tank 12, the heat exchanger 10 and the heat dissipation device of the battery system 8 are connected through a third valve 25, and the third valve 25, the first power pump 11 and the heat dissipation device of the battery system 8 are connected through a fourth valve 26.
The second power pump 19, the heat dissipation water tank 12 and the heat dissipation device of the power element 20 are sequentially connected end to end through a third pipeline, and the second power pump 19, the heat dissipation water tank 12 and the heat dissipation device of the motor 21 are sequentially connected end to end through a third pipeline. The second power pump 19 is also connected with an expansion kettle 22. A cooling fan 16 is provided at one side of the external condenser 3, and a radiator tank 12 is provided at the other side of the external condenser 3. The cooling fan 16 is a bidirectional fan.
The compressor 1, the PTC heater 9, the first power pump 11, the second power pump 19, the two-way valve 23, the first valve 17, the second valve 18, the third valve 25, the fourth valve 26, the air conditioning heater 14, the blower 15, and the cooling fan 16 are electrically connected to the control unit 13, respectively, to control the opening and closing of the respective passages and the operation of the devices.
Different refrigerants are respectively introduced into the first pipeline, the second pipeline and the third pipeline. Refrigerant 1 is introduced into the first pipeline, refrigerant 2 is introduced into the second pipeline, and refrigerant 3 is introduced into the third pipeline.
When the compartment is refrigerated, the loop of the refrigerant 1 is as follows: compressor 1-internal condenser 2-two-way valve 23-external condenser 3-first valve 17-first expansion valve 4-evaporator 6-vapour liquid separator 7-compressor 1. At this time, the internal condenser 2 does not work, the high-temperature and high-pressure gaseous refrigerant is subjected to heat release and condensation through the external condenser 3 to form high-pressure liquid, is throttled and decompressed through the first expansion valve 4, enters the indoor evaporator 6, and then absorbs heat in the evaporator 6 to form gas, so that the refrigeration purpose is achieved.
And calculating the temperature required by the air outlet of the carriage at the next moment by using the heat load balance model of the whole vehicle, controlling the rotating speed of the compressor 1 according to the cooling capacity required by the heat dissipation working condition of the comprehensive battery system 8, and requesting the torque of the whole vehicle.
When the vehicle is heated, the loop of the refrigerant 1 is: compressor 1-internal condenser 2-throttle pipe 24-external condenser 3-first valve 17-second valve 18-vapour-liquid separator 7-compressor 1. The high-temperature and high-pressure gaseous refrigerant is liquefied and released heat in the interior condenser 2, heats the air in the vehicle cabin, and then enters the exterior condenser 3 to absorb heat and turn into a gaseous state. In the heating mode, when the difference between the set temperature and the temperature inside the vehicle is large, for example, the difference between the set temperature and the temperature inside the vehicle is greater than or equal to 15 ℃ and the temperature outside the vehicle is less than-7 ℃, the control unit 13 controls the air-conditioning heater 14 to work, so that the air-conditioning heater 14 and the heating system operate simultaneously, and after the difference between the temperature inside the vehicle and the set temperature is reduced, the air-conditioning heater 14 is turned off. When the difference between the set temperature and the temperature in the vehicle is small, if the difference is less than 15 ℃ and the temperature of the vehicle compartment is more than or equal to minus 7 ℃, the heating system is independently used for heating, and the air-conditioning heater 14 is turned off. When the heating temperature of the air conditioner heater 14 is equal to or higher than a certain value, the air conditioner heater 14 is turned off to protect the air conditioner heater 14.
During the heating mode, the external condenser 3 is easy to frost, a temperature sensor is arranged on the external condenser 3 and transmits signals to the control unit 13, whether the external condenser 3 frosts is judged according to the temperature of the temperature sensor on the external condenser 3 and the suction pressure and the temperature of the compressor 1, if the suction pressure and the temperature of the compressor 1 judge that the state of a refrigerant at an air inlet of the compressor 1 is gaseous, the external condenser is still in the heating mode, if the external condenser is judged to possibly have liquid state, if the suction superheat degree is too low, the first valve 17 is adjusted to be in the refrigerating state to defrost, and finally, whether the defrosting is finished is judged according to the suction pressure and the temperature of the compressor 1, and if the defrosting is finished, the external condenser becomes the original heating state.
The circuit of the refrigerant 3 for heat dissipation of the motor 21 and the power element 20 is: second power pump 19-motor 21/power element 20-radiator tank 12. The rotation speeds of the second power pump 19 and the cooling fan 16 are controlled according to the temperatures of the motor 21 and the power element 20.
When the battery system 8 dissipates heat at a high temperature, the heat is dissipated through the first pipeline and the second pipeline together.
The circuit of the refrigerant 1 is: compressor 1-internal condenser 2-two-way valve 23-external condenser 3-first valve 17-first expansion valve 4-evaporator 6/second valve 18-second expansion valve 5-heat exchanger 10-vapour liquid separator 7-compressor 1.
The circuit of the refrigerant 2 is: first power pump 11-battery system 8-fourth valve 26-heat exchanger 10. The refrigerant 1 in the first conduit and the refrigerant 2 in the second conduit exchange heat in the heat exchanger 10. When the battery system 8 dissipates heat, the internal temperature of the battery system 8, the internal heat dissipation structure and the temperature and the difference of the cooling liquid inlet and outlet of the battery system 8 are comprehensively considered, and the rotating speeds of the compressor 1 and the first power pump 11 are controlled, so that the reliability, effectiveness and power consumption of heat dissipation management of the battery system 8 are improved.
When the battery system 8 radiates heat at a low temperature, the loop of the refrigerant 2 is as follows: the first power pump 11, the battery system 8, the fourth valve 26, the heat dissipation water tank 12 and the expansion water tank 22. Under the condition that the external temperature is low, and the temperature in the battery system 8 is at the upper limit of the working temperature range of the battery system 8 or slightly higher than the upper limit, the battery system 8 can dissipate heat through the loop of the heat dissipation water tank 12.
When the battery system 8 is started at low temperature and is charged and heated, the whole vehicle can be heated by the low-voltage and low-power PTC heater 9.
The waste heat recovery of the motor 21, the power element 20 and the battery system 8 is mainly used for defrosting and heating working conditions. When the motor 21, the power element 20 and the battery system 8 dissipate heat through the heat dissipating water tank 12, the cooling fan 16 can transfer the heat in the heat dissipating water tank 12 to the external condenser 3 to increase the heat and reduce the possibility of frost formation. Meanwhile, the air inlet temperature of the external condenser 3 can be increased, and the heating capacity of the whole system is improved.
In conclusion, the thermal management system for comprehensively managing the energy consumption of the electric vehicle comprehensively considers the energy consumption of cooling in summer, heating in winter, automatic defrosting, heat dissipation of the motor and the power element, heat dissipation of the battery system, heat recovery of the battery system, the motor and the power element, auxiliary heating of the battery system during charging of the low-temperature starter in winter and the like, and improves the reliability and safety of vehicle operation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A heat management system for comprehensively managing the energy consumption of an electric vehicle is characterized by comprising a compressor, an internal condenser, an external condenser, a first expansion valve, a second expansion valve, an evaporator, a vapor-liquid separator, a battery system, a PTC heater, a heat exchanger, a first power pump and a heat dissipation water tank, the battery system is internally provided with a heat dissipation device, the compressor, the internal condenser, the external condenser, the first expansion valve, the evaporator and the vapor-liquid separator are sequentially connected end to end through a first pipeline, the external condenser is connected with the vapor-liquid separator through the first pipeline, the external condenser, the second expansion valve, the heat exchanger and the vapor-liquid separator are sequentially connected through the first pipeline, the first power pump, the PTC heater, the heat dissipation device of the battery system and the heat dissipation water tank are sequentially connected end to end through a second pipeline, and the first power pump and the heat dissipation device of the battery system are respectively connected with the heat exchanger through the second pipeline;
different refrigerants are respectively introduced into the first pipeline and the second pipeline;
the first power pump is connected with an expansion kettle;
the condenser is characterized by further comprising a first valve and a second valve, the external condenser and the first expansion valve are connected through the first valve, and the first valve and the vapor-liquid separator are connected through the second valve.
2. The thermal management system for comprehensively managing energy consumption of an electric vehicle according to claim 1, further comprising a control unit, wherein the first power pump and the PTC heater are electrically connected with the control unit, respectively.
3. The thermal management system for comprehensively managing energy consumption of an electric vehicle according to claim 2, further comprising an air conditioner heater and an air blower, wherein the air conditioner heater and the air blower are respectively electrically connected with the control unit.
4. The thermal management system for comprehensively managing energy consumption of an electric vehicle according to claim 1, further comprising a cooling fan disposed at one side of the external condenser, and the heat-dissipating water tank disposed at the other side of the external condenser.
5. The thermal management system for comprehensively managing energy consumption of the electric vehicle according to claim 1, further comprising a second power pump, a power element and a motor, wherein heat dissipation devices are respectively arranged on the power element and the motor, the heat dissipation devices of the second power pump, the heat dissipation water tank and the power element are sequentially connected end to end through a third pipeline, and the heat dissipation devices of the second power pump, the heat dissipation water tank and the motor are sequentially connected end to end through a third pipeline.
6. The thermal management system for comprehensively managing energy consumption of electric vehicles according to claim 1, further comprising an expansion kettle, wherein the expansion kettle is arranged between the first power pump and the heat dissipation water tank.
7. The thermal management system for comprehensively managing energy consumption of an electric vehicle according to claim 1, further comprising a two-way valve and a throttle pipe, wherein one end of the two-way valve and the throttle pipe is respectively connected with the internal condenser, and the other end of the two-way valve and the throttle pipe is respectively connected with the external condenser.
8. The thermal management system for overall management of energy consumption of an electric vehicle of claim 1, further comprising a third valve through which the radiator tank, the heat exchanger, and the heat sink of the battery system are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910275907.1A CN110091753B (en) | 2016-08-30 | 2016-08-30 | Thermal management system for comprehensively managing energy consumption of electric vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771237.9A CN106114277B (en) | 2016-08-30 | 2016-08-30 | A kind of heat management system of electric vehicle |
| CN201910275907.1A CN110091753B (en) | 2016-08-30 | 2016-08-30 | Thermal management system for comprehensively managing energy consumption of electric vehicle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610771237.9A Division CN106114277B (en) | 2016-08-30 | 2016-08-30 | A kind of heat management system of electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110091753A CN110091753A (en) | 2019-08-06 |
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| CN201910275907.1A Active CN110091753B (en) | 2016-08-30 | 2016-08-30 | Thermal management system for comprehensively managing energy consumption of electric vehicle |
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| CN107914538B (en) * | 2016-10-10 | 2021-04-27 | 盾安环境技术有限公司 | Electric automobile thermal management system |
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| CN106945483A (en) * | 2017-04-21 | 2017-07-14 | 阿尔特汽车技术股份有限公司 | The long-range pre-heating system of motor vehicle driven by mixed power and long-range pre-heating mean |
| CN107719067A (en) * | 2017-10-31 | 2018-02-23 | 天津大学 | A kind of electric automobile energy saving seat-air conditioning system |
| CN108790684A (en) * | 2018-06-04 | 2018-11-13 | 泰铂（上海）环保科技股份有限公司 | A kind of new-energy automobile heat pump air conditioning system and control method |
| JP6997883B2 (en) * | 2018-12-21 | 2022-01-18 | 本田技研工業株式会社 | Temperature control circuit |
| CN110154677A (en) * | 2019-05-13 | 2019-08-23 | 北京汽车集团越野车有限公司 | Vehicle air conditioner and vehicle with it |
| CN110588281A (en) * | 2019-08-31 | 2019-12-20 | 徐从余 | Electric automobile heat pump air conditioning system and electric automobile |
| CN110450602A (en) * | 2019-09-17 | 2019-11-15 | 上汽大众汽车有限公司 | The heat pump air conditioner of electric car |
| CN111137104B (en) * | 2020-01-21 | 2021-05-07 | 合肥工业大学 | Electric automobile integrated thermal management system based on mixed phase-change material |
| CN114074514B (en) * | 2020-08-21 | 2024-01-30 | 比亚迪股份有限公司 | Thermal management system, air conditioning system of vehicle, battery temperature adjustment system and vehicle |
| CN112331961B (en) * | 2020-10-30 | 2021-12-14 | 湖北亿纬动力有限公司 | Temperature control method, device and equipment of battery cell and storage medium |
| CN112248756B (en) * | 2020-11-12 | 2022-02-15 | 东北石油大学 | Control method and device for heat pump air conditioner, electronic device, storage medium and vehicle |
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| CN113561732B (en) * | 2021-08-19 | 2024-01-16 | 无锡柯诺威新能源科技有限公司 | Whole vehicle thermal management system with pressure maintaining function and control method thereof |
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| CN106114277B (en) | 2019-03-29 |
| CN110126677A (en) | 2019-08-16 |
| CN106114277A (en) | 2016-11-16 |
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