CN112455205A - Heat management system of automobile - Google Patents
Heat management system of automobile Download PDFInfo
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- CN112455205A CN112455205A CN202011287165.3A CN202011287165A CN112455205A CN 112455205 A CN112455205 A CN 112455205A CN 202011287165 A CN202011287165 A CN 202011287165A CN 112455205 A CN112455205 A CN 112455205A
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- battery pack
- way valve
- temperature
- circulation subsystem
- engine
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- 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
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- 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
- B60K11/06—Arrangement in connection with cooling of propulsion units with air 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
- B60L58/26—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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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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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)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a heat management system of an automobile, which is characterized by comprising the following components: the control unit, the engine circulation subsystem and the battery pack circulation subsystem; the engine circulation subsystem is connected with the battery pack circulation subsystem to form a heating loop, and the control unit is electrically connected with the engine circulation subsystem and the battery pack circulation subsystem respectively; the control unit is used for judging that the working state of the battery pack circulation subsystem is a to-be-heated state according to the collected temperature of the battery pack of the current vehicle, and controlling the heating loop to heat the battery pack according to the to-be-heated state, so that the temperature of the battery pack is increased to reach a preset first temperature value. The problem that in the prior art, when the temperature is lower in winter, the activity of the battery pack is low, the charging performance and the discharging power of the battery pack can be greatly reduced, and therefore the use and the power output of the whole vehicle are affected can be effectively solved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile thermal management system.
Background
At present, according to different requirements of different parts on temperature, a new energy hybrid vehicle type thermal management system adopts four sets of independent thermal management circulation subsystems (see fig. 1), including an engine cooling circulation subsystem, a motor cooling circulation subsystem (when a motor is oil-cooled), a controller cooling circulation subsystem and a battery pack cooling/heating circulation subsystem, wherein a heater is adopted for heating cooling liquid in the battery pack heating circulation, and the heated cooling liquid flows through the interior of a battery pack so as to achieve the purpose of heating the battery pack. However, when the temperature is low in winter, the activity of the battery pack is low, and the charging performance and the discharging power of the battery pack are greatly reduced, so that the use and the power output of the whole vehicle are influenced.
Disclosure of Invention
The embodiment of the invention provides a thermal management system of an automobile, which can effectively solve the problems that in the prior art, when the temperature is lower in winter, the activity of a battery pack is low, the charging performance and the discharging power of the battery pack are greatly reduced, and the use and the power output of the whole automobile are influenced.
An embodiment of the present invention provides an automobile thermal management system, including: the control unit, the engine circulation subsystem and the battery pack circulation subsystem;
the engine circulation subsystem is connected with the battery pack circulation subsystem to form a heating loop, and the control unit is electrically connected with the engine circulation subsystem and the battery pack circulation subsystem respectively;
the control unit is used for judging that the working state of the battery pack circulation subsystem is a to-be-heated state according to the collected temperature of the battery pack of the current vehicle, and controlling the heating loop to heat the battery pack according to the to-be-heated state, so that the temperature of the battery pack is increased to reach a preset first temperature value.
As an improvement of the above solution, the battery pack circulation subsystem includes: a battery pack cooling circulation subsystem;
the control unit is further used for judging that the working state of the battery pack circulation subsystem is a to-be-cooled state according to the collected current battery pack temperature of the vehicle, and starting the battery pack cooling circulation subsystem according to the to-be-cooled state, so that the temperature of the battery pack is reduced to a preset second temperature value.
As an improvement of the above, the system further comprises: a heater heating sub-circulation system;
the control unit is further used for controlling the heater heating sub-circulation system to be started after the heating loop is only controlled to heat the battery pack and the temperature of the battery pack cannot reach a preset first temperature value, and controlling the heating loop and the heater heating sub-circulation system to heat the cooling liquid so that the temperature of the battery pack rises to reach the preset first temperature value.
As an improvement of the above, the heating circuit includes: the water heater comprises a second kettle, a high-temperature radiator, a first water pump, an engine, a second three-way valve, a third three-way valve, a first water temperature sensor, a second water temperature sensor, a fourth three-way valve and a first three-way valve;
the second kettle, the high-temperature radiator, the first water pump, the engine, the second three-way valve, the third three-way valve, the first water temperature sensor, the second water temperature sensor, the fourth three-way valve and the first three-way valve are sequentially connected end to end.
As an improvement of the above, the engine cycle subsystem comprises: an engine cooling cycle subsystem; wherein the engine cooling cycle subsystem includes: the water pump comprises a second kettle, a high-temperature radiator, a first water pump, an engine, a second three-way valve and a first three-way valve;
the second kettle, the high-temperature radiator, the first water pump, the engine, the second three-way valve and the first three-way valve are sequentially connected end to end.
As an improvement of the above solution, the battery pack cooling circulation subsystem includes: the water-cooling system comprises a fourth kettle, a third three-way valve, a first water temperature sensor, a battery pack, a second water temperature sensor, a fourth three-way valve, a fourth water pump and a battery cooler;
the fourth kettle, the third three-way valve, the first water temperature sensor, the battery pack, the second water temperature sensor, the fourth three-way valve, the fourth water pump and the battery cooler are sequentially connected end to end.
As an improvement of the above, the heater heating sub-circulation system includes: the water heater comprises a fourth kettle, a heater, a third three-way valve, a first water temperature sensor, a battery pack, a second water temperature sensor, a fourth three-way valve and a fourth water pump;
the fourth kettle, the heater, the third three-way valve, the first water temperature sensor, the battery pack, the second water temperature sensor, the fourth three-way valve and the fourth water pump are sequentially connected end to end.
As a modification of the above, the control unit is further configured to control the fourth water pump to decrease in rotation speed when it is detected that the temperature of the coolant is lower than a preset temperature threshold.
As an improvement of the above, the system further comprises: a motor controller cooling circulation subsystem;
the motor controller cooling cycle subsystem includes: the system comprises a first kettle, a low-temperature radiator, a third water pump, a DC-DC converter and a motor controller;
the first kettle, the low-temperature radiator, the third water pump, the DC-DC converter and the motor controller are sequentially connected end to end.
As an improvement of the above, the system further comprises: a motor cooling circulation subsystem;
the motor cooling circulation subsystem includes: oil cooler, motor, heat-dissipating fan;
the oil cooler with the motor is connected and is formed the return circuit, the heat dissipation fan with the oil cooler sets up relatively.
Compared with the prior art, the automobile thermal management system disclosed by the embodiment of the invention is characterized in that the engine circulation subsystem and the battery pack circulation subsystem are added, and the engine circulation subsystem and the battery pack circulation subsystem are connected to form a heating loop. Therefore, after the control unit judges that the working state of the battery pack circulation subsystem is the state to be heated according to the collected temperature of the battery pack, the battery pack is heated according to a heating loop formed by connecting the engine circulation subsystem and the battery pack circulation subsystem (namely, the cooling liquid flows into the battery pack circulation subsystem through the engine circulation subsystem, so that the heat of the engine circulation subsystem is transferred to the battery pack circulation subsystem), and the temperature of the battery pack is increased to reach a preset first temperature value. Therefore, the cooling liquid is heated by heat generated when the engine runs, the activity of the battery pack can be quickly activated without a heater, meanwhile, the heat of the engine is fully utilized, the waste of heat is reduced, the energy loss is reduced, and meanwhile, the power output used by the whole vehicle is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a prior art thermal management system for an automobile provided by the present invention;
fig. 2 is a schematic structural diagram of a thermal management system of an automobile according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic structural diagram of a thermal management system of an automobile according to an embodiment of the present invention.
An embodiment of the present invention provides an automobile thermal management system, including: the system comprises a control unit, an engine circulation subsystem and a battery pack circulation subsystem.
The engine circulation subsystem is connected with the battery pack circulation subsystem to form a heating loop, and the control unit is electrically connected with the engine circulation subsystem and the battery pack circulation subsystem respectively.
The control unit is used for judging that the working state of the battery pack circulation subsystem is a to-be-heated state according to the collected temperature of the battery pack 9 of the current vehicle, and controlling the heating loop to heat the battery pack 9 according to the to-be-heated state, so that the temperature of the battery pack 9 is increased to reach a preset first temperature value. The preset first temperature value may be set as required, and is not limited herein.
It should be noted that the control unit is a vehicle control unit (HCU), and the control unit is electrically connected to the battery pack temperature acquisition module, the engine circulation subsystem, the battery pack circulation subsystem, the motor controller cooling circulation subsystem, the motor cooling circulation subsystem, and the like. The control unit obtains the temperature of the battery pack 9 through the battery pack temperature acquisition module, and heats the battery pack 9 through a heating loop formed by the engine circulation subsystem and the battery pack circulation subsystem, so that the temperature of the battery pack 9 is increased. The various information may be directly transmitted to the control unit, or may be transmitted to another information processing apparatus, and after corresponding information processing, the information processing apparatus transmits the processed information to the control unit.
It should be noted that the operating state of the battery pack circulation subsystem includes a state to be heated and a state to be cooled. And judging the working state of the battery pack circulation subsystem according to the temperature of the battery pack 9. Illustratively, when the temperature of the battery pack 9 exceeds a preset temperature threshold of the battery pack 9, the working state of the battery pack circulation subsystem is a state to be cooled; and when the temperature of the battery pack 9 is lower than a preset temperature threshold value of the battery pack 9, the working state of the battery pack circulation subsystem is a state to be heated. It is understood that the preset temperature threshold of the battery pack 9 is set according to a large amount of experimental data, so as to rapidly activate the activity of the battery pack 9.
In summary, the heating loop is formed by adding the engine circulation subsystem and the battery pack circulation subsystem and connecting the engine circulation subsystem and the battery pack circulation subsystem. In this way, after the control unit judges that the working state of the battery pack circulation subsystem is the state to be heated according to the collected temperature of the battery pack 9, the battery pack 9 is heated according to a heating loop formed by connecting the engine circulation subsystem and the battery pack circulation subsystem (namely, the cooling liquid flows into the battery pack circulation subsystem through the engine circulation subsystem, so that the heat of the engine circulation subsystem is transferred to the battery pack circulation subsystem), and the temperature of the battery pack 9 is increased to reach the preset first temperature value. It can be seen that the high-temperature coolant which flows out in a cooling cycle of the engine 23 is used for detecting the temperature of the battery pack 9, the activity of the battery pack 9 can be activated rapidly without a heater (PTC), meanwhile, the heat of the engine 23 is fully utilized, the waste of heat is reduced, the energy loss is reduced, and meanwhile, the power output used by the whole vehicle is ensured.
In an alternative embodiment, the battery pack cycling subsystem comprises: a battery pack cooling circulation subsystem.
The control unit is further used for judging that the working state of the battery pack circulation subsystem is a to-be-cooled state according to the collected temperature of the battery pack 9 of the current vehicle, and starting the battery pack cooling circulation subsystem according to the to-be-cooled state, so that the temperature of the battery pack 9 is reduced to a preset second temperature value. It is understood that the preset second temperature value may be set according to needs, or may be obtained through a large amount of experimental data, and is not limited herein.
Wherein the battery pack cooling circulation subsystem comprises: a fourth kettle 13, a third three-way valve 7, a first water temperature sensor 21, a battery pack 9, a second water temperature sensor 22, a fourth three-way valve 8, a fourth water pump 4 and a battery cooler 19;
the fourth kettle 13, the third three-way valve 7, the first water temperature sensor 21, the battery pack 9, the second water temperature sensor 22, the fourth three-way valve 8, the fourth water pump 4 and the battery cooler 19 are sequentially connected end to end.
Specifically, when the working state of the battery pack circulation subsystem is the state to be cooled, the corresponding battery pack cooling circulation subsystem is started. In the process of heat dissipation, the cooling liquid passes through the fourth kettle 13, the third three-way valve 7, the first water temperature sensor 21, the battery pack 9, the second water temperature sensor 22, the fourth three-way valve 8, the fourth water pump 4 and the battery cooler 19 in sequence, and finally flows into the fourth kettle 13 from the battery cooler 19. The battery pack 9 may be cooled by an air conditioning refrigerant.
In an alternative embodiment, the system further comprises: the heater heats the sub-circulation system.
The control unit is further configured to control the heater heating sub-circulation system to start up and control the heating loop and the heater heating sub-circulation system to heat the coolant after only controlling the heating loop to heat the battery pack 9 and the temperature of the battery pack 9 cannot reach the preset first temperature value, so that the temperature of the battery pack 9 rises to reach the preset first temperature value.
Wherein the heater heating sub-circulation system comprises: a fourth kettle 13, a heater, a third three-way valve 7, a first water temperature sensor 21, a battery pack 9, a second water temperature sensor 22, a fourth three-way valve 8 and a fourth water pump 4.
The fourth kettle 13, the heater, the third three-way valve 7, the first water temperature sensor 21, the battery pack 9, the second water temperature sensor 22, the fourth three-way valve 8 and the fourth water pump 4 are sequentially connected end to end.
It should be noted that, after only the heating circuit is controlled to heat the battery pack 9 and the preset first temperature value cannot be reached, that is, the heat generated by the operation of the engine 23 is not enough to meet the heating requirement of the battery pack 9. And simultaneously starting a heater heating sub-circulation system, wherein heating loops connected with the engine circulation subsystem and the battery pack circulation subsystem of the heater heating sub-circulation system provide heat for the battery pack 9, three ports of the third three-way valve 7 and the fourth three-way valve 8 are all opened, and the control unit controls the rotating speeds of the first water pump 1 and the second water pump 2 in real time according to the temperatures of the battery pack 9 and the engine 23, so that different flow ratios are realized, and the waste of heat is reduced.
In an alternative embodiment, the heating circuit comprises: the water heater comprises a second kettle 11, a high-temperature radiator 16, a first water pump 1, an engine 23, a second three-way valve 6, a third three-way valve 7, a first water temperature sensor 21, a second water temperature sensor 22, a fourth three-way valve 8 and a first three-way valve 5.
The second kettle 11, the high-temperature radiator 16, the first water pump 1, the engine 23, the second three-way valve 6, the third three-way valve 7, the first water temperature sensor 21, the second water temperature sensor 22, the fourth three-way valve 8 and the first three-way valve 5 are sequentially connected end to end.
Specifically, when the control unit determines that the working state of the battery pack circulation subsystem is the to-be-heated state according to the temperature of the battery pack 9 collected on the CAN bus, the working state of the battery pack circulation subsystem CAN be controlled in real time by measuring the temperature of the cooling liquid at the water inlet and the water outlet because the water inlet and the water outlet of the battery pack 9 are respectively provided with the temperature sensor. When the battery pack 9 needs to be heated, the control unit controls the opening c of the first three-way valve 5 to be closed, and the opening a and the opening b are opened; the port a of the second three-way valve 6 is closed, and the ports b and c are opened; the port b of the third three-way valve 7 is closed, and the ports a and c are opened; the port a of the fourth three-way valve 8 is closed, and the ports b and c are opened, so that the battery pack 9 is heated by heat generated when the engine 23 is operated.
In an alternative embodiment, the engine cycle subsystem comprises: an engine 23 cooling cycle subsystem; wherein, the engine 23 cooling cycle subsystem includes: the water heater comprises a second kettle 11, a high-temperature radiator 16, a first water pump 1, an engine 23, a second three-way valve 6 and a first three-way valve 5.
The second kettle 11, the high-temperature radiator 16, the first water pump 1, the engine 23, the second three-way valve 6 and the first three-way valve 5 are sequentially connected end to end.
Specifically, the coolant in the heat dissipation mode of the engine 23 sequentially passes through the second kettle 11, the high-temperature radiator 16, the first water pump 1, the engine 23, the second three-way valve 6 and the first three-way valve 5, and finally flows to the second kettle 11 through the first three-way valve 5, at this time, the ports b of the first three-way valve 5 and the second three-way valve 6 are both in a closed state, and the ports a and c are open.
In an alternative embodiment, the control unit is further configured to control the rotation speed of the fourth water pump 4 to decrease when the temperature of the coolant is detected to be lower than a preset temperature threshold. The preset temperature threshold may be set as needed, or may be obtained according to a large amount of experimental data.
Specifically, since the first water temperature sensor 21 and the second water temperature sensor 22 are arranged to monitor the cooling liquid in real time, the control unit controls the fourth water pump 4 to rotate down when the measured temperature of the cooling liquid in the battery pack cooling circulation subsystem is low.
In an alternative embodiment, the system further comprises: the motor controller cools the circulation subsystem.
The motor controller cooling cycle subsystem includes: the water heater comprises a first kettle 10, a low-temperature radiator 15, a third water pump 3, a DC-DC converter 25 and a motor controller 24.
The first kettle 10, the low-temperature radiator 15, the third water pump 3, the DC-DC converter 25 and the motor controller 24 are sequentially connected end to end.
Specifically, the cooling liquid flows through the first kettle 10, the low temperature radiator 15, the third water pump 3, the DC-DC converter 25, and the motor 20 controller to form a circulation, so that the motor controller 24 is cooled.
In an alternative embodiment, the system further comprises: and a motor cooling circulation subsystem.
The motor cooling circulation subsystem includes: oil cooler 17, motor 20, radiator fan 18.
The oil cooler 17 is connected with the motor 20 to form a loop, and the heat dissipation fan 18 is arranged opposite to the oil cooler 17.
Specifically, the oil cooler 17 is connected to the motor 20 through an oil pump to form a circulation loop, and the heat exchange of the heat dissipation fan 18 is facilitated due to the arrangement of the heat dissipation fan 18 opposite to the oil cooler 17.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A thermal management system for an automotive vehicle, comprising: the control unit, the engine circulation subsystem and the battery pack circulation subsystem;
the engine circulation subsystem is connected with the battery pack circulation subsystem to form a heating loop, and the control unit is electrically connected with the engine circulation subsystem and the battery pack circulation subsystem respectively;
the control unit is used for judging that the working state of the battery pack circulation subsystem is a to-be-heated state according to the collected temperature of the battery pack of the current vehicle, and controlling the heating loop to heat the battery pack according to the to-be-heated state, so that the temperature of the battery pack is increased to reach a preset first temperature value.
2. The thermal management system of an automobile of claim 1, wherein said battery pack circulation subsystem comprises: a battery pack cooling circulation subsystem;
the control unit is further used for judging that the working state of the battery pack circulation subsystem is a to-be-cooled state according to the collected current battery pack temperature of the vehicle, and starting the battery pack cooling circulation subsystem according to the to-be-cooled state, so that the temperature of the battery pack is reduced to a preset second temperature value.
3. The thermal management system of an automobile of claim 1, wherein said system further comprises: a heater heating sub-circulation system;
the control unit is further used for controlling the heater heating sub-circulation system to be started after the heating loop is only controlled to heat the battery pack and the temperature of the battery pack cannot reach a preset first temperature value, and controlling the heating loop and the heater heating sub-circulation system to heat the cooling liquid so that the temperature of the battery pack rises to reach the preset first temperature value.
4. The thermal management system of an automobile of claim 1, wherein said heating circuit comprises: the water heater comprises a second kettle, a high-temperature radiator, a first water pump, an engine, a second three-way valve, a third three-way valve, a first water temperature sensor, a second water temperature sensor, a fourth three-way valve and a first three-way valve;
the second kettle, the high-temperature radiator, the first water pump, the engine, the second three-way valve, the third three-way valve, the first water temperature sensor, the second water temperature sensor, the fourth three-way valve and the first three-way valve are sequentially connected end to end.
5. The thermal management system of an automobile of claim 1, wherein said engine cycle subsystem comprises: an engine cooling cycle subsystem; wherein the engine cooling cycle subsystem includes: the water pump comprises a second kettle, a high-temperature radiator, a first water pump, an engine, a second three-way valve and a first three-way valve;
the second kettle, the high-temperature radiator, the first water pump, the engine, the second three-way valve and the first three-way valve are sequentially connected end to end.
6. The thermal management system of an automobile of claim 2, wherein said battery pack cooling cycle subsystem comprises: the water-cooling system comprises a fourth kettle, a third three-way valve, a first water temperature sensor, a battery pack, a second water temperature sensor, a fourth three-way valve, a fourth water pump and a battery cooler;
the fourth kettle, the third three-way valve, the first water temperature sensor, the battery pack, the second water temperature sensor, the fourth three-way valve, the fourth water pump and the battery cooler are sequentially connected end to end.
7. The thermal management system of an automobile of claim 3, wherein said heater heating sub-cycle system comprises: the water heater comprises a fourth kettle, a heater, a third three-way valve, a first water temperature sensor, a battery pack, a second water temperature sensor, a fourth three-way valve and a fourth water pump;
the fourth kettle, the heater, the third three-way valve, the first water temperature sensor, the battery pack, the second water temperature sensor, the fourth three-way valve and the fourth water pump are sequentially connected end to end.
8. The thermal management system of an automobile of claim 7,
the control unit is further used for controlling the rotating speed of the fourth water pump to be reduced when the fact that the temperature of the cooling liquid is lower than a preset temperature threshold value is detected.
9. The thermal management system of an automobile of claim 1, wherein said system further comprises: a motor controller cooling circulation subsystem;
the motor controller cooling cycle subsystem includes: the system comprises a first kettle, a low-temperature radiator, a third water pump, a DC-DC converter and a motor controller;
the first kettle, the low-temperature radiator, the third water pump, the DC-DC converter and the motor controller are sequentially connected end to end.
10. The thermal management system of an automobile of claim 1, wherein said system further comprises: a motor cooling circulation subsystem;
the motor cooling circulation subsystem includes: oil cooler, motor, heat-dissipating fan;
the oil cooler with the motor is connected and is formed the return circuit, the heat dissipation fan with the oil cooler sets up relatively.
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