CN112693363B - Whole car thermal management system of pure electric truck - Google Patents
Whole car thermal management system of pure electric truck Download PDFInfo
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- CN112693363B CN112693363B CN202110175635.5A CN202110175635A CN112693363B CN 112693363 B CN112693363 B CN 112693363B CN 202110175635 A CN202110175635 A CN 202110175635A CN 112693363 B CN112693363 B CN 112693363B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 113
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 238000004378 air conditioning Methods 0.000 claims abstract description 23
- 230000005494 condensation Effects 0.000 claims abstract description 23
- 238000009833 condensation Methods 0.000 claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims description 92
- 239000003507 refrigerant Substances 0.000 claims description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000005057 refrigeration Methods 0.000 claims description 22
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000010354 integration Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- 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
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
-
- 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
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- 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
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a whole vehicle heat management system of a pure electric truck, which comprises a battery heat management unit, a motor heat management unit and a cooling and heating air conditioning unit, wherein a plate heat exchanger is arranged between the cooling and heating air conditioning unit and the motor heat management unit, a first regulating valve and a second regulating valve are arranged on the plate heat exchanger, the cooling and heating air conditioning unit is connected with a plate heat exchanger pipeline through the first regulating valve and the second regulating valve, the motor heat management unit is connected with the plate heat exchanger pipeline through the first regulating valve and the second regulating valve, the battery heat management unit comprises a battery condensation heat exchange unit and a motor heat management unit which comprises at least two motor radiators, a third regulating valve and a fourth regulating valve are arranged on the motor radiators, and the battery condensation heat exchange unit is connected with the motor radiator pipeline through the third regulating valve and the fourth regulating valve, so that integrated heat dissipation management is realized, and the energy consumption of the whole vehicle is reduced.
Description
Technical Field
The invention belongs to the technical field of vehicle thermal management, and particularly relates to a whole vehicle thermal management system of a pure electric truck.
Background
The technical scheme of heat management of the cold and warm air conditioner and the integrated battery adopted in the technical field of the existing pure electric automobile realizes integration to a certain extent, but the degree of integration is not high, the heat of the whole automobile is not considered as a whole, and the full utilization of the heat of the whole automobile and the capacity of heat dissipation components is not realized.
Disclosure of Invention
In view of the above, the invention provides a thermal management system for an electric vehicle.
The specific scheme is as follows:
The utility model provides a pure electric truck whole car heat management system, includes battery thermal management unit, motor thermal management unit and changes in temperature air conditioning unit, wherein, be provided with the plate heat exchanger between changes in temperature air conditioning unit and the motor thermal management unit, be provided with first governing valve and second governing valve on the plate heat exchanger, changes in temperature air conditioning unit passes through first governing valve and second governing valve and plate heat exchanger pipe connection, motor thermal management unit passes through first governing valve and second governing valve and plate heat exchanger pipe connection, battery thermal management unit includes battery condensation heat transfer unit, motor thermal management unit includes two at least motor radiator, be provided with third governing valve and fourth governing valve on the motor radiator, battery condensation heat transfer unit pass through third governing valve and fourth governing valve with motor radiator pipe connection.
The first regulating valve and the second regulating valve are three-way regulating valves, the cooling and heating air conditioning unit comprises a refrigerating circulation module and a heating circulation module, the first regulating valve and the second regulating valve are connected with the heating circulation module through pipelines, the heating circulation module comprises a water-cooling condenser, a PTC heater, an HVAC assembly, an expansion water tank and a heating circulation water pump, wherein a water-cooling heat exchange first end, a water-cooling heat exchange second end, a refrigerant heat exchange first end and a refrigerant heat exchange second end are arranged in the water-cooling condenser, the water-cooling heat exchange second end is connected with the PTC heater through pipelines, the PTC heater is connected with the HVAC assembly through pipelines, and the HVAC assembly is connected with the heating circulation water pump through pipelines.
Heating circulating water pump and first governing valve pipe connection, PTC heater and second governing valve pipe connection, still be provided with the moisturizing branch road on the thermal cycle module, expansion tank and moisturizing branch road pipe connection, the HVAC assembly includes evaporimeter core, warm braw core, air-blower and expansion valve, PTC heater pass through the warm braw core with heating circulating water pump pipe connection.
The main refrigeration cycle module comprises a first refrigerant heat exchange end, a second refrigerant heat exchange end, a main solenoid valve, an air-cooled condenser of an air conditioner, an evaporator core body and a compressor, wherein the compressor is connected with the first refrigerant heat exchange end through a pipeline, the second refrigerant heat exchange end is connected with the air-cooled condenser of the air conditioner through the main solenoid valve, the air-cooled condenser of the air conditioner is connected with the evaporator core body through the pipeline, and the evaporator core body is connected with the compressor through a pipeline.
The auxiliary refrigeration cycle module comprises a first refrigerant heat exchange end, a second refrigerant heat exchange end, an auxiliary way expansion valve, a plate heat exchanger, an auxiliary way electromagnetic valve and a compressor, wherein the compressor is connected with the first refrigerant heat exchange end through a pipeline, the second refrigerant heat exchange end is connected with the plate heat exchanger through the auxiliary way expansion valve, and the plate heat exchanger is connected with the compressor through the auxiliary way electromagnetic valve.
The motor thermal management unit comprises a first motor radiator, a second motor radiator, a motor driver, a motor controller and a motor cooling water circulating pump, wherein the first motor radiator is connected with the motor driver and the motor controller through pipelines, the motor driver and the motor controller are connected with the motor cooling water circulating pump through pipelines, the motor cooling water circulating pump is connected with a plate heat exchanger through a second regulating valve, the plate heat exchanger is connected with the first motor radiator through a first regulating valve pipeline, and the second motor radiator is connected with the first motor radiator in parallel.
The motor thermal management unit further comprises a motor cooling water supplementing branch, a first expansion tank is arranged on the motor cooling water supplementing branch and connected with a motor cooling water circulating pump pipeline through the motor cooling water supplementing branch, the third regulating valve and the fourth regulating valve are three-way regulating valves, and the second motor radiator is connected with a battery condensation heat exchange unit pipeline through the third regulating valve and the fourth regulating valve.
The battery thermal management unit further comprises a battery pack, a battery cooling water circulating pump and a battery expansion water tank, wherein the battery cooling water circulating pump is connected with the battery pack through a pipeline, the battery pack is connected with the battery condensation heat exchange unit through a pipeline, the battery condensation heat exchange unit is connected with the battery cooling water circulating pump through a pipeline, and the battery expansion water tank is connected with the battery cooling water circulating pump through a pipeline.
The battery condensation heat exchange unit comprises a battery heat management compressor, a battery heat management condenser, a battery heat management expansion valve, a second plate heat exchanger and a cooling electromagnetic regulating valve, wherein the battery heat management compressor is connected with a battery heat management condenser pipeline, the battery heat management condenser is connected with a second plate heat exchanger pipeline through the battery heat management expansion valve, the second plate heat exchanger is connected with the battery heat management compressor pipeline, one end of the second plate heat exchanger is connected with a fourth regulating valve pipeline through the cooling electromagnetic regulating valve, and the other end of the second plate heat exchanger is connected with a second motor radiator pipeline through a third regulating valve.
The invention discloses a whole vehicle heat management system of a pure electric truck, which is characterized in that a battery heat management unit, a motor heat management unit and a cooling and heating air conditioning unit are integrally arranged, in addition, a first regulating valve and a second regulating valve are arranged between the cooling and heating air conditioning unit and the motor heat management unit, the cooling and heating air conditioning unit can adopt cooling water after heat exchange in the motor heat management unit to heat when heating is performed through the first regulating valve and the second regulating valve, and can also adopt a PTC heater in the cooling and heating air conditioner to heat, so that the switching of two heating modes of air conditioning and heating is realized, a third regulating valve and a fourth regulating valve are arranged between the motor heat management unit and the battery heat management unit, the two motor radiators can simultaneously radiate heat under the condition of high temperature environment through the adjustment of the third regulating valve and the fourth regulating valve, and one motor radiator is adopted for battery cooling under the condition of low temperature environment.
Compared with the prior art, the invention has the following beneficial effects:
1. The integration of three functions of motor heat dissipation, battery heat management and air conditioner condensation heat dissipation is realized;
2. The battery thermal management adopts two modes of compressor refrigeration and natural heat dissipation, so that the problems that the battery thermal management is required and cannot be satisfied under the low-temperature condition of the integrated thermal management system of the passenger car can be avoided;
3. The waste heat of the motor is fully utilized, the energy consumption of the whole vehicle can be reduced, and the running reliability of the system is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the cooling and heating air conditioning unit.
Fig. 3 is a schematic structural view of a battery thermal management unit and a motor thermal management unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. It will be apparent to those skilled in the art that the described embodiments are only a part, but not all, of the implementations of the invention, and that all other embodiments, based on which those skilled in the art will come to lie within the scope of the invention without making any inventive effort.
As shown in fig. 1, the whole heat management system of the pure electric truck comprises a battery heat management unit 8, a motor heat management unit 5 and a cooling and heating air conditioning unit 1, wherein a plate heat exchanger 3 is arranged between the cooling and heating air conditioning unit 1 and the motor heat management unit 5, a first regulating valve 4 and a second regulating valve 2 are arranged on the plate heat exchanger 3, the cooling and heating air conditioning unit 1 is connected with the plate heat exchanger 3 through the first regulating valve 4 and the second regulating valve 2 in a pipeline manner, the motor heat management unit 5 is connected with the plate heat exchanger 3 through the first regulating valve 4 and the second regulating valve 2 in a pipeline manner, the battery heat management unit 8 comprises a battery condensation heat exchange unit 9 and a motor heat management unit 5 which comprises at least two motor radiators, and a third regulating valve 6 and a fourth regulating valve 7 are arranged on the motor radiator, and the battery condensation heat exchange unit 9 is connected with the motor radiator in a pipeline manner through the third regulating valve 6 and the fourth regulating valve 7.
The plate heat exchanger 3 is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is ideal equipment for liquid-liquid and liquid-vapor heat exchange. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like.
In the present embodiment, by adjusting the first adjusting valve 4 and the second adjusting valve 2, heat exchange between the cooling water in the motor thermal management unit 5 and the refrigerant in the air conditioning unit 1 in the plate heat exchanger 3 can be achieved.
The battery heat management unit 8 can adopt the battery condensation heat exchange unit 9 to dissipate heat of the battery, and can also realize the heat dissipation of the battery through the motor radiator through the adjustment of the third regulating valve 6 and the fourth regulating valve 7.
As shown in fig. 2, the first regulating valve 4 and the second regulating valve 2 are three-way regulating valves, the cooling-heating air conditioning unit 1 comprises a refrigeration cycle module and a heating cycle module, the first regulating valve 4 and the second regulating valve 2 are connected with the heating cycle module through pipelines, the heating cycle module comprises a water-cooled condenser 21, a PTC heater 20, an HVAC assembly 14, an expansion water tank 19 and a heating cycle water pump 18, wherein a water-cooled heat exchange first end 22, a water-cooled heat exchange second end 23, a refrigerant heat exchange first end 24 and a refrigerant heat exchange second end 25 are arranged in the water-cooled condenser 21, the water-cooled heat exchange second end 23 is connected with the PTC heater 20 through pipelines, the PTC heater 20 is connected with the HVAC assembly 14 through pipelines, the HVAC assembly 14 is connected with the heating cycle water pump 18 through pipelines, and the heating cycle water pump 18 is connected with the water-cooled heat exchange first end 22 through pipelines.
The heating circulating water pump 18 is connected with the first regulating valve 4 in a pipeline manner, the PTC heater 20 is connected with the second regulating valve 2 in a pipeline manner, the thermal circulating module is further provided with a water supplementing branch, the expansion water tank 19 is connected with the water supplementing branch in a pipeline manner, the HVAC assembly 14 comprises an evaporator core 12, a warm air core 16, a blower 13 and an expansion valve 11, and the PTC heater 20 is connected with the heating circulating water pump 18 in a pipeline manner through the warm air core 16.
The cooling water circulates in the first end 22 and the second end 23, the cooling water circulates in the first end 24 and the second end 25, the cooling water exchanges heat with the cooling medium in the water-cooled condenser 21, the cooling medium flowing out of the compressor 17 through the first end 24 is gaseous cooling medium, the gaseous cooling medium is condensed and releases heat in the water-cooled condenser 21, the cooling water absorbs the heat released by the gaseous cooling medium and heats up, the heated cooling water flows through the second end 23 and the PTC heater 20 and enters the warm air core 16, the heat of the heated cooling water is blown into the vehicle through the blower 13 to heat up the air conditioner, and the cooling water flows out of the warm air core 16 and flows into the water-cooled condenser 21 through the circulating water pump 18 and the first end 22, so that the cooling water exchanges heat with the cooling medium again in the water-cooled condenser 21 and heats up. The expansion tank 19 can supplement cooling water to the thermal cycle module through a water supplementing branch pipe.
Depending on the temperature requirements, the PTC heater 20 may be activated to further heat the cooling water, so that the heated cooling water provides a higher warm air temperature for the electric-only truck as it flows through the warm air core 16. In addition, in this embodiment, the heating circulating water pump 18 is further connected to the first adjusting valve 4 through a pipeline, the PTC heater 20 is further connected to the second adjusting valve 2 through a pipeline, the first adjusting valve 4 and the second adjusting valve 2 can change the flow direction of cooling water in the motor thermal management system, the cooling water exchanges heat with the motor, so that the temperature of the motor is reduced, the temperature of the cooling water is increased, and the cooling water after heating in the motor thermal management system can flow into the PTC heater 20 and the heating circulating water pump 18 through the pipeline and flow into the warm air core 16 through the adjusting valve 4 and the second adjusting valve 2, so that the heating function of the air conditioner is realized by adopting the cooling water after heat exchange in the motor thermal management system, and the energy-saving effect is achieved.
The refrigeration cycle module main way refrigeration cycle module and auxiliary refrigeration cycle module, the main way refrigeration cycle module includes refrigerant heat transfer first end 24, refrigerant heat transfer second end 25, main way solenoid valve 26, air conditioner forced air cooling condenser 27, evaporator core 12 and compressor 17, compressor 17 and refrigerant heat transfer first end 24 pipe connection, refrigerant heat transfer second end 25 pass through main way solenoid valve 26 with air conditioner forced air cooling condenser 27 pipe connection, air conditioner forced air cooling condenser 27 pass through expansion valve 11 with evaporator core 12 pipe connection, evaporator core 12 with compressor 17 pipe connection.
In this embodiment, the evaporator core 12 may evaporate the refrigerant into a gaseous refrigerant, after the evaporation process is an endothermic process, the temperature around the evaporator core 12 is reduced after absorbing heat, the gaseous refrigerant is blown into the electric truck to realize refrigeration by the blowing action of the blower 13, the gaseous refrigerant flows out of the evaporator core 12 and flows into the compressor 17 through the pipeline, the compressor 17 is a driven fluid machine for lifting the low-pressure gas into the high-pressure gas, the heart of the refrigeration system sucks the low-temperature low-pressure refrigerant gas from the air suction pipe, the piston is driven by the motor operation to compress the low-temperature low-pressure refrigerant gas, the high-pressure refrigerant gas is discharged to the exhaust pipe to provide power for the refrigeration cycle, the gaseous refrigerant is compressed in the compressor 17, the high-pressure gaseous refrigerant flows out of the compressor 17 and is subjected to heat exchange and condensation by the water-cooled condenser 21, the high-pressure gas refrigerant is converted into the liquid refrigerant at this time, the liquid refrigerant flows into the condenser through the heat exchange second end 25 and the main path condenser 26 to further flow into the evaporator core 11 through the air-conditioning valve to perform expansion valve 11, and the expansion valve is further controlled to perform expansion of the refrigerant. The main solenoid valve 26 may regulate whether a main refrigeration cycle or an auxiliary refrigeration cycle is selected. When the main solenoid valve 26 is closed, the auxiliary refrigeration cycle module is used to cool the air conditioner.
The auxiliary refrigeration cycle module comprises a first refrigerant heat exchange end 24, a second refrigerant heat exchange end 25, an auxiliary expansion valve 10, a plate heat exchanger 3, an auxiliary electromagnetic valve 15 and a compressor 17, wherein the compressor 17 is connected with the first refrigerant heat exchange end 24 in a pipeline manner, the second refrigerant heat exchange end 25 is connected with the plate heat exchanger 3 in a pipeline manner through the auxiliary expansion valve 10, and the plate heat exchanger 3 is connected with the compressor 17 in a pipeline manner through the auxiliary electromagnetic valve 15.
The specific circulation process of the refrigerant in the auxiliary refrigeration cycle module is that the refrigerant flows out of the refrigerant heat exchange second end 25, flows into the plate heat exchanger 3 through the auxiliary way expansion valve 10, exchanges heat with cooling water in the motor heat management unit 5 in the plate heat exchanger 3, absorbs heat after the heat exchange, evaporates into gaseous refrigerant, is cooled by the heat absorption, flows into the motor heat management unit 5 again through the first regulating valve 4 after the cooling water is cooled, achieves the heat dissipation and cooling operation of the motor, flows into the compressor 17 through the auxiliary way electromagnetic valve 15 after the gaseous refrigerant flows out of the plate heat exchanger 3, changes into high-pressure gaseous refrigerant after being compressed by the compressor 17, flows into the water-cooling condenser 21 through the refrigerant heat exchange first end 24, changes into liquid refrigerant, flows out through the refrigerant heat exchange second end 25, and flows into the plate heat exchanger 3 through the auxiliary way expansion valve 10 to circulate the refrigerant again.
In this embodiment, the first regulating valve 4 and the second regulating valve 2 may be adjusted to make the cooling water in the motor thermal management unit 5 have different flow directions, where one flow direction is that the cooling water in the motor thermal management unit 5 flows into the heating cycle module of the air conditioner unit 1 through the first regulating valve 4 and the second regulating valve 2, and heat of the cooling water in the motor thermal management unit 5 after heat exchange is used to provide heat for the heating cycle module, so as to reduce power consumption of heating in the air conditioner unit; the other flow direction of the cooling water in the motor heat management unit 5 is that the cooling water after heat exchange flows into the plate heat exchanger 3 through the second regulating valve 2, the cooling water after heat exchange in the plate heat exchanger 3 exchanges heat with the refrigerant in the cold and warm air conditioning unit 1, after heat exchange, the temperature of the cooling water is reduced, and the cooling water after temperature reduction flows into the motor heat pipe unit 5 again through the first regulating valve 4 to perform the motor heat dissipation work again.
As shown in fig. 3, the motor thermal management unit 5 includes a first motor radiator 33, a second motor radiator 34, a motor driver 32, a motor controller 31, and a motor cooling water circulation pump 28, the first motor radiator 33 is in pipeline connection with the motor driver 32 and the motor controller 31, the motor driver 32 and the motor controller 31 are both in pipeline connection with the motor cooling water circulation pump 28, the motor cooling water circulation pump 28 is in pipeline connection with the plate heat exchanger 3 through the second regulating valve 2, the plate heat exchanger 3 is in pipeline connection with the first motor radiator 33 through the first regulating valve 4, and the second motor radiator 34 is in parallel connection with the first motor radiator 33.
When the cooling water flows through the first motor radiator 33 and the second motor radiator 34, the cooling water radiates and cools, the cooled cooling water passes through the motor driver 32 and the motor controller 31, the cooling water exchanges heat with the motor driver 32 and the motor controller 31, after heat exchange, the temperature of the motor driver 32 and the motor controller 31 decreases, the temperature of the cooling water increases, the warmed cooling water passes through the motor cooling water circulating pump 28, under the action of the motor cooling water circulating pump 28, the cooled water after heat exchange can flow into the plate heat exchanger 3 through the second regulating valve 2, flows out of the plate heat exchanger 3 and circulates to the first motor radiator 33 and the second motor radiator 34 again through the first regulating valve 4, and the cooling water is cooled in the first motor radiator 33 and the second motor radiator 34 to provide regulation for the next motor heat radiation.
The motor thermal management unit 5 further comprises a motor cooling water supplementing branch, a first expansion tank 29 is arranged on the motor cooling water supplementing branch, the first expansion tank 29 is connected with a motor cooling water circulating pump 28 through the motor cooling water supplementing branch in a pipeline mode, the third regulating valve 6 and the fourth regulating valve 7 are three-way regulating valves, and the second motor radiator 34 is connected with the battery condensation heat exchange unit 9 through the third regulating valve 6 and the fourth regulating valve 7 in a pipeline mode.
In the motor thermal management unit 5, since the cooling water has a certain loss in the circulation process, the first expansion tank 29 can automatically supplement the cooling water into the pipeline according to the pressure of the cooling water in the pipeline of the motor thermal management unit 5, so that the stability of the cooling water flow is ensured, and the heat dissipation of the motor is also stable.
In the present embodiment, when the motor driver 32 and the motor controller 31 operate in a low temperature environment, the cooling water can be cooled only by the first motor radiator 33 by adjusting the third regulating valve 6 and the fourth regulating valve 7, so that the energy consumption is saved.
The battery thermal management unit 8 further comprises a battery pack 42, a battery cooling water circulating pump 40 and a battery expansion water tank 44, wherein the battery cooling water circulating pump 40 is connected with the battery pack 42 in a pipeline mode, the battery pack 42 is connected with the battery condensation heat exchange unit 9 in a pipeline mode, the battery condensation heat exchange unit 9 is connected with the battery cooling water circulating pump 40 in a pipeline mode, and the battery expansion water tank 44 is connected with the battery cooling water circulating pump 40 in a pipeline mode.
The battery condensation heat exchange unit 9 comprises a battery heat management compressor 37, a battery heat management condenser 38, a battery heat management expansion valve 39, a second plate heat exchanger 36 and a cooling electromagnetic regulating valve 35, wherein the battery heat management compressor 37 is connected with the battery heat management condenser 38 through a pipeline, the battery heat management condenser 38 is connected with the second plate heat exchanger 36 through the battery heat management expansion valve 39 through a pipeline, the second plate heat exchanger 36 is connected with the battery heat management compressor 37 through a pipeline, one end of the second plate heat exchanger 36 is connected with the fourth regulating valve 7 through the cooling electromagnetic regulating valve 35 through a pipeline, and the other end of the second plate heat exchanger 36 is connected with the second motor radiator 34 through a pipeline through a third regulating valve 6.
The battery thermal management unit 8 is circulated with cooling water, cooling of the battery pack is achieved through heat exchange between the cooling water and the battery pack 42, the battery cooling water circulating pump 40 supplies power for cooling water circulation, after heat exchange between the cooling water and the battery pack 42, the cooling water flows to the fourth regulating valve 7 and the cooling electromagnetic regulating valve 35 through pipelines, when the heating value of the battery pack 42 is not high at a lower environment temperature, the cooling water can pass through the second motor radiator 34 through adjusting the third regulating valve 6 and the fourth regulating valve 7, cooling is achieved in the second motor radiator 34, cooled cooling water is circulated into the battery cooling water circulating pump 40 through the third regulating valve 6, and continuous water cooling of the battery pack 42 is achieved.
When the heat generation amount of the battery pack 42 is large, the cooling electromagnetic regulating valve 35 is opened to enable cooling water to exchange heat with the refrigerant in the second plate heat exchanger 36 through the second plate heat exchanger 36, the cooling water temperature is reduced after heat exchange, the refrigerant absorbs heat to be changed into gaseous refrigerant, the cooled cooling water flows into the battery cooling water circulating pump 40 again to continuously cool the battery pack 42, the gaseous refrigerant flows into the battery thermal management compressor 37 from the second plate heat exchanger 36, the battery thermal management compressor 37 compresses the gaseous refrigerant into high-pressure gaseous refrigerant, the high-pressure gaseous refrigerant is changed into liquid refrigerant through the battery thermal management condenser 38, and the liquid refrigerant flows into the second plate heat exchanger 36 through the battery thermal management expansion valve 39 to perform heat exchange circulation again.
The specific working process of the whole electric truck thermal management system is as follows:
Under the condition of high Wen Huanwen, the battery thermal management unit 8 cools the battery pack 42 by adopting a refrigeration mode of the battery thermal management compressor 37, and under the condition of low-temperature ambient temperature, the battery thermal management unit 8 cools the battery pack by adopting the second motor radiator 34 by adjusting the third regulating valve 6 and the fourth regulating valve 7;
the motor thermal management unit 5 may employ a first motor radiator 33 and a second motor radiator to water cool the motor driver 32 and the motor controller 31.
The cooling and heating air conditioning unit 1 can adopt the PTC heater 20 to heat cooling water for heating, and can also adopt the cooling water after the heat exchange of the motor for heating by adjusting the first regulating valve 4 and the second regulating valve 2, and meanwhile, the cooling and heating air conditioning unit 1 can also adopt the cooling water in the water-cooled condenser for heating with the cooling water after the heat exchange of the refrigerant.
The cooling operation of the air conditioning unit 1 may be achieved by adjusting the opening of the main solenoid valve 26 and the auxiliary solenoid valve 15 to select a block main refrigeration cycle module or an auxiliary refrigeration cycle module.
Claims (2)
1. The utility model provides a pure electric truck whole car thermal management system which characterized in that: the solar heat pump air conditioner comprises a battery thermal management unit (8), a motor thermal management unit (5) and a cooling and heating air conditioner unit (1), wherein a plate heat exchanger (3) is arranged between the cooling and heating air conditioner unit (1) and the motor thermal management unit (5), a first regulating valve (4) and a second regulating valve (2) are arranged on the plate heat exchanger (3), the cooling and heating air conditioner unit (1) is connected with the plate heat exchanger (3) through the first regulating valve (4) and the second regulating valve (2) in a pipeline manner, the motor thermal management unit (5) is connected with the plate heat exchanger (3) through the first regulating valve (4) and the second regulating valve (2) in a pipeline manner, the battery thermal management unit (8) comprises a battery condensation heat exchange unit (9) and the motor thermal management unit (5) comprises at least two motor radiators, a third regulating valve (6) and a fourth regulating valve (7) are arranged on the motor radiator, and the battery condensation heat exchange unit (9) is connected with the motor radiator through the third regulating valve (6) and the fourth regulating valve (7) in a pipeline manner;
The first regulating valve (4) and the second regulating valve (2) are three-way regulating valves, the cold-warm air conditioning unit (1) comprises a refrigeration cycle module and a heating cycle module, the first regulating valve (4) and the second regulating valve (2) are connected with the heating cycle module through pipelines, the heating cycle module comprises a water-cooled condenser (21), a PTC heater (20), an HVAC assembly (14), an expansion water tank (19) and a heating cycle water pump (18), wherein a water-cooled heat exchange first end (22), a water-cooled heat exchange second end (23), a refrigerant heat exchange first end (24) and a refrigerant heat exchange second end (25) are arranged in the water-cooled condenser (21), the water-cooled heat exchange second end (23) is connected with the PTC heater (20) through pipelines, the PTC heater (20) is connected with the HVAC assembly (14) through pipelines, the HVAC assembly (14) is connected with the heating cycle water pump (18) through pipelines, and the heating cycle water pump (18) is connected with the water-cooled heat exchange first end (22);
the heating circulating water pump (18) is connected with the first regulating valve (4) through a pipeline, the PTC heater (20) is connected with the second regulating valve (2) through a pipeline, the thermal circulation module is further provided with a water supplementing branch, the expansion water tank (19) is connected with the water supplementing branch through a pipeline, the HVAC assembly (14) comprises an evaporator core body (12), a warm air core body (16), a blower (13) and an expansion valve (11), and the PTC heater (20) is connected with the heating circulating water pump (18) through the warm air core body (16) through a pipeline;
The main refrigeration cycle module comprises a refrigerant heat exchange first end (24), a refrigerant heat exchange second end (25), a main solenoid valve (26), an air conditioner air-cooled condenser (27), an evaporator core (12) and a compressor (17), wherein the compressor (17) is connected with the refrigerant heat exchange first end (24) through a pipeline, the refrigerant heat exchange second end (25) is connected with the air conditioner air-cooled condenser (27) through the main solenoid valve (26), the air conditioner air-cooled condenser (27) is connected with the evaporator core (12) through an expansion valve (11) through a pipeline, and the evaporator core (12) is connected with the compressor (17) through a pipeline;
The motor thermal management unit (5) comprises a first motor radiator (33), a second motor radiator (34), a motor driver (32), a motor controller (31) and a motor cooling water circulating pump (28), wherein the first motor radiator (33) is connected with the motor driver (32) and the motor controller (31) through pipelines, the motor driver (32) and the motor controller (31) are connected with the motor cooling water circulating pump (28) through pipelines, the motor cooling water circulating pump (28) is connected with the plate type heat exchanger (3) through a second regulating valve (2) through a pipeline, the plate type heat exchanger (3) is connected with the first motor radiator (33) through a first regulating valve (4) through a pipeline, and the second motor radiator (34) is connected with the first motor radiator (33) in parallel;
The motor thermal management unit (5) further comprises a motor cooling water supplementing branch, a first expansion tank (29) is arranged on the motor cooling water supplementing branch, the first expansion tank (29) is connected with a motor cooling water circulating pump (28) through the motor cooling water supplementing branch in a pipeline mode, the third regulating valve (6) and the fourth regulating valve (7) are three-way regulating valves, and the second motor radiator (34) is connected with the battery condensation heat exchange unit (9) through the third regulating valve (6) and the fourth regulating valve (7) in a pipeline mode;
The battery thermal management unit (8) further comprises a battery pack (42), a battery cooling water circulating pump (40) and a battery expansion water tank (44), wherein the battery cooling water circulating pump (40) is connected with the battery pack (42) through a pipeline, the battery pack (42) is connected with the battery condensation heat exchange unit (9) through a pipeline, the battery condensation heat exchange unit (9) is connected with the battery cooling water circulating pump (40) through a pipeline, and the battery expansion water tank (44) is connected with the battery cooling water circulating pump (40) through a pipeline;
The battery condensation heat exchange unit (9) comprises a battery heat management compressor (37), a battery heat management condenser (38), a battery heat management expansion valve (39), a second plate heat exchanger (36) and a cooling electromagnetic regulating valve (35), wherein the battery heat management compressor (37) is connected with the battery heat management condenser (38) through a pipeline, the battery heat management condenser (38) is connected with the second plate heat exchanger (36) through the battery heat management expansion valve (39), the second plate heat exchanger (36) is connected with the battery heat management compressor (37) through a pipeline, one end of the second plate heat exchanger (36) is connected with a fourth regulating valve (7) through the cooling electromagnetic regulating valve (35), and the other end of the second plate heat exchanger (36) is connected with the second motor radiator (34) through a pipeline through a third regulating valve (6).
2. The electric only truck thermal management system of claim 1, wherein: the auxiliary refrigeration cycle module comprises a refrigerant heat exchange first end (24), a refrigerant heat exchange second end (25), an auxiliary way expansion valve (10), a plate heat exchanger (3), an auxiliary way electromagnetic valve (15) and a compressor (17), wherein the refrigerant heat exchange second end (25) is connected with the plate heat exchanger (3) through the auxiliary way expansion valve (10) in a pipeline manner, and the plate heat exchanger (3) is connected with the compressor (17) through the auxiliary way electromagnetic valve (15) in a pipeline manner.
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| CN107782020B (en) * | 2016-08-30 | 2021-03-30 | 浙江盾安人工环境股份有限公司 | Air conditioning system of pure electric vehicle |
| CN207128552U (en) * | 2017-09-18 | 2018-03-23 | 郑州科林车用空调有限公司 | The pure electric coach thermal management system of whole that a kind of in-car air-conditioning integrates with battery thermal management system |
| CN108749518A (en) * | 2018-08-02 | 2018-11-06 | 威马智慧出行科技（上海）有限公司 | A kind of heat management system of electric vehicle |
| CN209426515U (en) * | 2018-09-25 | 2019-09-24 | 上海思致汽车工程技术有限公司 | A kind of electric automobile air conditioner and battery thermal management system |
| CN109228824B (en) * | 2018-10-30 | 2023-10-31 | 珠海格力电器股份有限公司 | Integrated battery, motor and electric control integrated heat management system based on heat pump air conditioner and method thereof |
| CN110422026A (en) * | 2019-07-16 | 2019-11-08 | 博雷顿科技有限公司 | A kind of pure electric vehicle truck heating refrigeration system |
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