CN111137105A - Integrated thermal management control system for whole new energy automobile and control method thereof - Google Patents
Integrated thermal management control system for whole new energy automobile and control method thereof Download PDFInfo
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- CN111137105A CN111137105A CN202010101986.7A CN202010101986A CN111137105A CN 111137105 A CN111137105 A CN 111137105A CN 202010101986 A CN202010101986 A CN 202010101986A CN 111137105 A CN111137105 A CN 111137105A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004378 air conditioning Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 106
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000000498 cooling water Substances 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000010257 thawing Methods 0.000 claims description 9
- 238000005286 illumination Methods 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000007175 bidirectional communication Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/3213—Control means therefor for increasing the efficiency in a vehicle heat pump
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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
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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
- 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
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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)
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- Transportation (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
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Abstract
The invention provides a whole-vehicle integrated heat management control system of a new energy vehicle, which comprises a whole-vehicle heat management controller, a heat pump air conditioning system, a battery pack heat management system, a power cooling system, a whole-vehicle controller and a keyless entry and start system, wherein the heat pump air conditioning system, the battery pack heat management system, the power cooling system, the whole-vehicle controller and the keyless entry and start system are in control connection with the whole-vehicle heat. The invention further provides a control method of the whole new energy automobile integrated heat management control system. The invention integrates the original independent air conditioning system, the battery pack heat management system and the power cooling system into the same controller for control, can effectively reduce the development cost and can realize more accurate control on the whole vehicle.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to an integrated thermal management control system for a whole new energy automobile and a control method thereof.
Background
The air conditioner of the traditional fuel vehicle is controlled by an air conditioner controller, and an engine cooling system is controlled by a vehicle controller. At present, a pure electric new energy automobile adopts a motor + MCU (controller) and a battery + BMS (battery management system), an electric compressor is adopted for refrigerating or heating a passenger compartment, and meanwhile, the cold energy of the part needs to be provided for cooling a battery pack, namely, an air conditioning system, a battery pack heat management system and a power cooling system respectively adopt three independent control systems. Because the new energy pure electric vehicle has strict requirements on heat management and is strongly coupled with each other, the existing split scheme is usually developed by three independent manufacturers, so that complicated and complicated calibration work needs to be carried out among three controllers, the investment cost is high, and the energy consumption is high; the software part and the current automobile electronic part need to be diagnosed, and because the diagnosis protocol stack part is universal for each controller, the split controller is usually designed by three different manufacturers, wherein a large part of codes are designed for the same redundancy; in the hardware part, a main control chip selected by each manufacturer has a large part of redundant functions, including some general CAN interface control and the like, so that the number of parts is large, and the occupied installation space is large. Leading-edge research shows that a thermal management domain controller becomes an industry development trend.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an integral thermal management control system for the whole new energy automobile and a control method thereof.
According to one aspect of the invention, the whole new energy automobile integrated heat management control system comprises a whole automobile heat management controller (6), a heat pump air conditioning system (1), a battery pack heat management system (2), a power cooling system (3), a whole automobile controller (4) and a keyless entry and start system (5), wherein the heat pump air conditioning system, the battery pack heat management system, the power cooling system and the whole automobile controller are in control connection with the whole automobile heat management controller;
the heat pump air-conditioning system (1) comprises an electric compressor (11), an air heater (12), an air door, an electronic expansion valve (16), a stop valve (17), a multimedia large screen (18), a temperature sensor, a refrigerant temperature and pressure sensor (113), an illumination sensor (114), a blower (115) and a relay (116);
the battery pack heat management system (2) comprises a water heating heater (21), a battery pack inlet water temperature sensor (22), a battery pack outlet water temperature sensor (23), a battery management system (24), a battery electronic water pump (25) and an electronic expansion valve (26);
the power cooling system (3) comprises a power management distribution unit (31), a motor controller (32), a charger (33), a power conversion module (34), a water temperature sensor (35), a cooler fan (36), an electronic water pump (37) and a three-way water valve (38).
The air conditioning system is universal for a heat pump system, the battery pack thermal management system is liquid-cooled, and the power cooling system mainly cools a power management distribution unit, a motor controller, a charger and a power conversion module.
Preferably, the vehicle control unit (4), the keyless entry and starting system (5), the electric compressor (11), the electronic expansion valve (16), the water heating heater (21), the battery management system (24), the electronic expansion valve (26), the power management distribution unit (31), the motor controller (32), the charger (33) and the power conversion module (34) are in bidirectional communication with the vehicle thermal management controller (6) by adopting a CAN bus.
Preferably, the multimedia large screen (18), the temperature sensor, the refrigerant temperature and pressure sensor (113), the illumination sensor (114), the battery pack inlet water temperature sensor (22), the battery pack outlet water temperature sensor (23) and the water temperature sensor (35) all adopt CAN buses to perform one-way signal transmission to the whole vehicle heat management controller (6).
Preferably, the whole vehicle thermal management controller (6) adopts a CAN bus to respectively transmit one-way signals to the air heater (12), the air door, the stop valve (17), the blower (115), the relay (116), the battery electronic water pump (25), the cooler fan (36), the electronic water pump (37) and the three-way water valve (38).
Preferably, the blower (115) is controlled by a pulse width modulation module arranged on the blower (115), and the pulse width modulation module is connected with the whole vehicle thermal management controller (6).
Preferably, the temperature sensors comprise a return air temperature sensor (19), an ambient temperature sensor (110), an evaporator temperature sensor (111) and a duct temperature sensor (112).
Preferably, the air door comprises a temperature air door (13), a mode air door (14) and an internal and external circulation air door (15).
Preferably, the operation mode of the heat pump air-conditioning system (1) is selected by operating on a multimedia large screen (18), and the operation mode comprises a cooling mode, a heating mode and a defrosting mode.
Preferably, the battery management system (24) is provided with a sensor for detecting the real-time temperature inside the battery.
Preferably, the power management distribution unit (31), the motor controller (32), the charger (33) and the power conversion module (34) are cooled by cooling water in the same cooling water pipe, and the water temperature of the cooling water in the cooling water pipe is monitored by a water temperature sensor (35).
In order to achieve the above purpose, the invention further provides a control method of the whole new energy automobile integrated thermal management control system, the keyless entry and starting system (5) is started, and after the automobile is started to operate, the heat pump air conditioning system (1), the battery pack thermal management system (2) and the power cooling system (3) operate;
the vehicle control unit (4) sends high-voltage electricity permission signals of all parts of the vehicle and current running state information of the vehicle to the vehicle thermal management controller (6), and a user selects a running mode of the heat pump air conditioning system (1) on the multimedia large screen (18);
the whole vehicle thermal management controller (6) receives feedback information of the whole vehicle controller (4) and an operation instruction of the multimedia large screen (18), processes the feedback information and the operation instruction and then controls the vehicle and the heat pump air conditioning system (1) to operate, and meanwhile controls the battery pack to cool or heat up in real time according to the received battery pack temperature in the battery pack thermal management system (2) and the temperature of cooling water in the power cooling system (3), and controls the power cooling system (3) to start and stop a heat dissipation function.
Preferably, the whole vehicle thermal management controller (6) controls the heat pump air conditioning system (1) to operate, and the method comprises the following steps:
step one, a user operates and selects an operation mode of the heat pump air-conditioning system (1) on a multimedia large screen (18), and the multimedia large screen (18) transmits an operation instruction to a finished automobile heat management controller (6);
step two, after receiving and processing an operation instruction of the multimedia large screen (18), the finished automobile heat management controller (6) directly controls corresponding components in the heat pump air-conditioning system (1) to operate;
step three, when the operation instruction is to start the refrigeration mode, the whole vehicle heat management controller (6) controls an electric compressor (11) in the heat pump air-conditioning system (1) to start, a temperature air door (13) is adjusted to a set orientation, an electronic expansion valve (16) is closed, a stop valve (17) is closed, and an air blower (115) is opened;
when the operation instruction is to start the heating mode, the whole vehicle thermal management controller (6) controls an electric compressor (11) in the heat pump air-conditioning system (1) to start, an air heater (12) is opened, a temperature air door (13) is adjusted to a set direction, an electronic expansion valve (16) is opened to a set opening degree, and a stop valve (17) is opened;
when the operation instruction is to start the defrosting mode, the whole vehicle heat management controller (6) controls a relay (116) in the heat pump air-conditioning system (1) to be turned on for direct defrosting.
Preferably, the whole vehicle thermal management controller (6) controls the battery pack thermal management system (2) to operate, and the method comprises the following steps:
step one, a battery management system (24) monitors the real-time temperature inside a battery pack and transmits the real-time temperature to a finished automobile heat management controller (6), and a battery pack inlet water temperature sensor (22) and a battery pack outlet water temperature sensor (23) respectively monitor the battery pack inlet water temperature and the battery pack outlet water temperature and transmit the temperature to the finished automobile heat management controller (6);
step two, the whole vehicle thermal management controller (6) controls corresponding components in the battery pack thermal management system (2) to operate and raises or lowers the temperature of the battery pack after comparing and analyzing the received real-time temperature inside the battery pack with an initial battery temperature set value; the whole vehicle thermal management controller (6) compares and analyzes the received battery pack inlet water temperature and the received battery pack outlet water temperature and then adjusts the running speed of corresponding components in the battery pack thermal management system (2);
step three, when the real-time temperature in the battery pack is greater than the initial battery temperature set value, the whole vehicle thermal management controller (6) controls an electronic expansion valve (26) in the battery pack thermal management system (2) to be opened, an electric compressor (11) increases the rotating speed, the power of a battery electronic water pump (25) is increased, part of refrigerant cold energy in a passenger cabin is introduced into the battery pack, and the temperature of the battery pack is reduced; when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle heat management controller (6) controls an electronic expansion valve (26) in the battery pack heat management system (2) to increase the opening, the electric compressor (11) increases the rotating speed, and the battery electronic water pump (25) increases the output power;
when the real-time temperature in the battery pack is lower than the initial battery temperature set value, the whole vehicle thermal management controller (6) controls a water heating heater (21) in the battery pack thermal management system (2) to start heating, so that the temperature of the battery pack is increased; and when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle heat management controller (6) controls a water heating heater (21) in the battery pack heat management system (2) to increase the output power.
The power of the battery electronic water pump (25) is adjusted according to the difference value between the real-time temperature inside the battery and the initial battery temperature set value; no matter the temperature of the interior of the passenger cabin is raised or lowered, the water heater is adopted for heating, so that the effect of raising the temperature of the battery pack is achieved.
Preferably, the whole vehicle thermal management controller (6) controls the power cooling system (3) to operate, and the method comprises the following steps:
step one, the water temperature sensor (35) collects the temperature of cooling water in a cooling water pipe of a power management distribution unit (31), a motor controller (32), a charger (33) and a power conversion module (34) and transmits the temperature to a finished automobile heat management controller (6);
step two, the whole vehicle thermal management controller (6) controls corresponding components in the power cooling system (3) to operate after comparing and analyzing the temperature of the received cooling water with an initially set water temperature threshold; the threshold value can set a plurality of grading ranges by itself;
and step three, the cooler fan (36), the electronic water pump (37) and the three-way water valve (38) are opened or closed so as to open or close the heat dissipation.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention relates to a whole new energy automobile integrated heat management control system and a control method thereof.A primary independent air conditioning system, a battery pack heat management system and a power cooling system are controlled and integrated into a heat management controller, and simultaneously, an air outlet temperature sensor, a temperature pressure sensor, an illumination sensor and a water temperature sensor are acquired, and a temperature air door, a mode air door, an internal and external circulation air door, an electronic expansion valve, a stop valve, an air blower and the like are controlled, so that the air conditioner can meet the requirement of comfort of a passenger cabin, the requirements of quick charging and quick discharging of batteries and cooling and heating during driving are met, and the cooling requirements of a power management distribution unit, a motor controller, a charger and a power conversion module are met;
(2) the integrated thermal management control system and the control method for the whole new energy automobile can effectively reduce development cost and realize more accurate control on the whole automobile;
(3) the integrated thermal management control system and the control method thereof for the whole new energy automobile are used as an integrated domain controller, a part of redundant code compiling can be greatly saved on software, part of element design can be reduced on hardware, the investment cost is reduced, the use of parts is reduced, and the occupied installation space is small;
(4) according to the integrated thermal management control system and the control method of the new energy automobile, the integrated system is beneficial to providing the stability and the control accuracy of the integrated system;
(5) the whole new energy automobile integrated heat management control system and the control method thereof have the advantages of simple structure, ingenious design and obvious effect;
(6) the whole new energy automobile integrated heat management control system and the control method thereof are simple to operate, easy to machine and assemble, low in cost, high in practicability and suitable for large-scale popularization.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a component connection block diagram of a whole-vehicle integrated thermal management control system of a new energy vehicle.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples
The embodiment provides a whole vehicle integrated heat management control system of a new energy automobile, and the structure thereof is shown in the attached drawing 1 in detail: the system comprises a finished automobile heat management controller 6, a heat pump air conditioning system 1, a battery pack heat management system 2, a power cooling system 3, a finished automobile controller 4 and a keyless entry and starting system 5 which are in control connection with the finished automobile heat management controller;
the heat pump air-conditioning system 1 comprises an electric compressor 11, an air heater 12, an air door, an electronic expansion valve 16, a stop valve 17, a multimedia large screen 18, a temperature sensor, a refrigerant temperature and pressure sensor 113, an illumination sensor 114, a blower 115 and a relay 116;
the battery pack heat management system 2 comprises a water heating heater 21, a battery pack inlet water temperature sensor 22, a battery pack outlet water temperature sensor 23, a battery management system 24, a battery electronic water pump 25 and an electronic expansion valve 26;
the power cooling system 3 comprises a power management distribution unit 31, a motor controller 32, a charger 33, a power conversion module 34, a water temperature sensor 35, a cooler fan 36, an electronic water pump 37 and a three-way water valve 38.
The air conditioning system is universal for a heat pump system, the battery pack thermal management system is liquid-cooled, and the power cooling system mainly cools a power management distribution unit, a motor controller, a charger and a power conversion module.
Further, the vehicle control unit 4, the keyless entry and start system 5, the electric compressor 11, the electronic expansion valve 16, the water heating heater 21, the battery management system 24, the electronic expansion valve 26, the power management distribution unit 31, the motor controller 32, the charger 33, and the power conversion module 34 all perform bidirectional communication with the vehicle thermal management controller 6 by using a CAN bus.
Further, the multimedia large screen 18, the temperature sensor, the refrigerant temperature and pressure sensor 113, the illumination sensor 114, the battery pack inlet water temperature sensor 22, the battery pack outlet water temperature sensor 23, and the water temperature sensor 35 all perform one-way signal transmission to the entire vehicle thermal management controller 6 by using a CAN bus.
Further, the vehicle thermal management controller 6 adopts a CAN bus to perform one-way signal transmission to the air heater 12, the air door, the stop valve 17, the blower 115, the relay 116, the battery electronic water pump 25, the cooler fan 36, the electronic water pump 37 and the three-way water valve 38 respectively.
Further, the blower 115 is controlled by a pulse width modulation module arranged on the blower 115, and the pulse width modulation module is connected with the overall vehicle thermal management controller 6.
Further, the temperature sensors include a return air temperature sensor 19, an ambient temperature sensor 110, an evaporator temperature sensor 111, and a duct temperature sensor 112.
Further, the dampers include a temperature damper 13, a mode damper 14, and an internal and external circulation damper 15.
Further, the operation mode of the heat pump air conditioning system 1 is selected by operating on the multimedia large screen 18, and the operation mode includes a cooling mode, a heating mode and a defrosting mode.
Further, a sensor for detecting the real-time temperature inside the battery is provided in the battery management system 24.
Further, the power management distribution unit 31, the motor controller 32, the charger 33, and the power conversion module 34 are cooled by cooling water in the same cooling water pipe, and the temperature of the cooling water in the cooling water pipe is monitored by a water temperature sensor 35.
In a second aspect, in order to achieve the above object, the embodiment further provides a control method of the whole vehicle integrated thermal management control system of the new energy vehicle, the keyless entry and start system 5 is started, and after the vehicle is started and operated, the heat pump air conditioning system 1, the battery pack thermal management system 2 and the power cooling system 3 are operated;
the vehicle control unit 4 sends high-voltage electricity permission signals of all parts of the vehicle and current running state information of the vehicle to the vehicle thermal management controller 6, and a user selects a running mode of the heat pump air-conditioning system 1 on the multimedia large screen 18;
the whole vehicle thermal management controller 6 receives and processes feedback information of the whole vehicle controller 4 and an operation instruction of the multimedia large screen 18, controls the vehicle and the heat pump air conditioning system 1 to operate, and simultaneously controls the battery pack to cool or heat in real time and controls the power cooling system 3 to start and stop a heat dissipation function according to the received battery pack temperature in the battery pack thermal management system 2 and the temperature of cooling water in the power cooling system 3.
Further, the whole vehicle thermal management controller 6 controls the heat pump air conditioning system 1 to operate, and the method comprises the following steps:
step one, a user operates and selects an operation mode of the heat pump air-conditioning system 1 on a multimedia large screen 18, and the multimedia large screen 18 transmits an operation instruction to a finished automobile heat management controller 6;
step two, after receiving and processing an operation instruction of the multimedia large screen 18, the whole vehicle heat management controller 6 directly controls corresponding components in the heat pump air-conditioning system 1 to operate;
step three, when the operation instruction is to start the refrigeration mode, the whole vehicle thermal management controller 6 controls the electric compressor 11 in the heat pump air-conditioning system 1 to start, the temperature air door 13 is adjusted to the set direction, the electronic expansion valve 16 is closed, the stop valve 17 is closed, and the blower 115 is opened;
when the operation instruction is to start the heating mode, the whole vehicle thermal management controller 6 controls an electric compressor 11 in the heat pump air-conditioning system 1 to start, an air heater 12 is opened, a temperature air door 13 is adjusted to a set direction, an electronic expansion valve 16 is opened to a set opening degree, and a stop valve 17 is opened;
when the operation instruction is to start the defrosting mode, the whole vehicle thermal management controller 6 controls the relay 116 in the heat pump air-conditioning system 1 to open for direct defrosting.
Further, the whole vehicle thermal management controller 6 controls the battery pack thermal management system 2 to operate, and the method comprises the following steps:
step one, the battery management system 24 monitors the real-time temperature inside the battery pack and transmits the real-time temperature to the finished automobile heat management controller 6, and the battery pack inlet water temperature sensor 22 and the battery pack outlet water temperature sensor 23 respectively monitor the battery pack inlet water temperature and the battery pack outlet water temperature and transmit the temperature to the finished automobile heat management controller 6;
step two, the whole vehicle thermal management controller 6 controls corresponding components in the battery pack thermal management system 2 to operate and raises or lowers the temperature of the battery pack after comparing and analyzing the received real-time temperature inside the battery pack with an initial battery temperature set value; the whole vehicle thermal management controller 6 compares and analyzes the received battery pack inlet water temperature and the received battery pack outlet water temperature and then adjusts the running speed of corresponding components in the battery pack thermal management system 2;
step three, when the real-time temperature in the battery pack is greater than the initial battery temperature set value, the whole vehicle thermal management controller 6 controls an electronic expansion valve 26 in the battery pack thermal management system 2 to be opened, an electric compressor 11 increases the rotating speed, the power of a battery electronic water pump 25 is increased, part of refrigerant cold energy in the passenger cabin is introduced into the battery pack, and the temperature of the battery pack is reduced; when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle thermal management controller 6 controls the electronic expansion valve 26 in the battery pack thermal management system 2 to increase the opening, the electric compressor 11 increases the rotating speed, and the battery electronic water pump 25 increases the output power;
when the real-time temperature in the battery pack is lower than the initial battery temperature set value, the whole vehicle thermal management controller 6 controls a water heating heater 21 in the battery pack thermal management system 2 to start heating, and the temperature of the battery pack is increased; and when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle heat management controller 6 controls the water heating heater 21 in the battery pack heat management system 2 to increase the output power.
The power of the battery electronic water pump 25 is adjusted according to the difference value between the real-time temperature inside the battery and the initial battery temperature set value; no matter the temperature of the interior of the passenger cabin is raised or lowered, the water heater is adopted for heating, so that the effect of raising the temperature of the battery pack is achieved.
Further, the whole vehicle thermal management controller 6 controls the power cooling system 3 to operate, and the method comprises the following steps:
step one, the water temperature sensor 35 collects the temperature of cooling water in cooling water pipes of the power management distribution unit 31, the motor controller 32, the charger 33 and the power conversion module 34 and transmits the temperature to the whole vehicle heat management controller 6;
step two, the whole vehicle thermal management controller 6 controls corresponding components in the power cooling system 3 to operate after comparing and analyzing the temperature of the received cooling water with an initially set water temperature threshold; the threshold value can set a plurality of grading ranges by itself;
and step three, the cooler fan 36, the electronic water pump 37 and the three-way water valve 38 are opened or closed so as to open or close the heat dissipation.
The embodiment has the following beneficial effects:
(1) the original independent air conditioning system, the battery pack heat management system and the power cooling system are controlled and integrated into a heat management controller, the air outlet temperature sensors, the temperature pressure sensors, the illumination sensors and the water temperature sensors are collected at the same time, and the temperature air door, the mode air door, the internal and external circulation air doors, the electronic expansion valve, the stop valve, the air blower and the like are controlled at the same time, so that the air conditioner can meet the requirement on comfort of a passenger cabin, the requirements on cooling and heating during quick charging and quick discharging of batteries and driving and the cooling requirements of a power management distribution unit, a motor controller, a charger and a power conversion module;
(2) the development cost can be effectively reduced, and the whole vehicle can be controlled more accurately;
(3) the domain controller is made into an integrated domain controller, a large part of redundant code compiling can be saved on software, part of element design can be reduced on hardware, the investment cost is reduced, the use of parts is reduced, and the occupied installation space is small;
(4) the integrated system is beneficial to providing the stability of the whole system and the accuracy of control;
(5) the structure is simple, the design is ingenious, and the effect is obvious;
(6) the method is simple to operate, easy to process and assemble, low in cost, high in practicability and suitable for large-scale popularization.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. The integrated thermal management control system for the whole new energy automobile is characterized by comprising a whole automobile thermal management controller (6), a heat pump air conditioning system (1), a battery pack thermal management system (2), a power cooling system (3), a whole automobile controller (4) and a keyless entry and starting system (5), wherein the heat pump air conditioning system, the battery pack thermal management system, the power cooling system, the whole automobile controller and the keyless entry and starting system are in control connection with the whole automobile thermal management controller;
the heat pump air-conditioning system (1) comprises an electric compressor (11), an air heater (12), an air door, an electronic expansion valve (16), a stop valve (17), a multimedia large screen (18), a temperature sensor, a refrigerant temperature and pressure sensor (113), an illumination sensor (114), a blower (115) and a relay (116);
the battery pack heat management system (2) comprises a water heating heater (21), a battery pack inlet water temperature sensor (22), a battery pack outlet water temperature sensor (23), a battery management system (24), a battery electronic water pump (25) and an electronic expansion valve (26);
the power cooling system (3) comprises a power management distribution unit (31), a motor controller (32), a charger (33), a power conversion module (34), a water temperature sensor (35), a cooler fan (36), an electronic water pump (37) and a three-way water valve (38).
2. The integrated thermal management control system for the whole new energy automobile according to claim 1, wherein the whole automobile controller (4), the keyless entry and starting system (5), the electric compressor (11), the electronic expansion valve (16), the water heating heater (21), the battery management system (24), the electronic expansion valve (26), the power management distribution unit (31), the motor controller (32), the charger (33) and the power conversion module (34) are in bidirectional communication with the whole automobile thermal management controller (6) by adopting a CAN bus;
the multimedia large screen (18), the temperature sensor, the refrigerant temperature and pressure sensor (113), the illumination sensor (114), the battery pack inlet water temperature sensor (22), the battery pack outlet water temperature sensor (23) and the water temperature sensor (35) are all in one-way signal transmission to the whole vehicle heat management controller (6) by adopting a CAN bus;
the whole vehicle thermal management controller (6) adopts a CAN bus to respectively transmit one-way signals to the air heater (12), the air door, the stop valve (17), the air blower (115), the relay (116), the battery electronic water pump (25), the cooler fan (36), the electronic water pump (37) and the three-way water valve (38).
3. The integrated thermal management control system for the whole new energy automobile according to claim 1, wherein the blower (115) is controlled by a pulse width modulation module arranged on the blower (115), and the pulse width modulation module is connected with a whole automobile thermal management controller (6); the temperature sensors comprise a return air temperature sensor (19), an ambient temperature sensor (110), an evaporator temperature sensor (111) and an air duct temperature sensor (112); the air door comprises a temperature air door (13), a mode air door (14) and an internal and external circulation air door (15).
4. The integrated thermal management control system for the whole new energy automobile is characterized in that the operation modes of the heat pump air-conditioning system (1) are selected through operation on a multimedia large screen (18), and the operation modes comprise a cooling mode, a heating mode and a defrosting mode.
5. The integrated thermal management control system for the whole new energy automobile as claimed in claim 1, wherein a sensor for detecting real-time temperature inside the battery is arranged in the battery management system (24).
6. The whole new energy automobile integrated heat management control system according to claim 1, wherein the power management distribution unit (31), the motor controller (32), the charger (33) and the power conversion module (34) are cooled by cooling water in the same cooling water pipe, and the temperature of the cooling water in the cooling water pipe is monitored by a water temperature sensor (35).
7. The control method of the whole-vehicle integrated thermal management control system of the new energy vehicle is characterized in that the keyless entry and starting system (5) is started, and after the vehicle is started to operate, the heat pump air conditioning system (1), the battery pack thermal management system (2) and the power cooling system (3) operate;
the vehicle control unit (4) sends high-voltage electricity permission signals of all parts of the vehicle and current running state information of the vehicle to the vehicle thermal management controller (6), and a user selects a running mode of the heat pump air conditioning system (1) on the multimedia large screen (18);
the whole vehicle thermal management controller (6) receives feedback information of the whole vehicle controller (4) and an operation instruction of the multimedia large screen (18), processes the feedback information and the operation instruction and then controls the vehicle and the heat pump air conditioning system (1) to operate, and meanwhile controls the battery pack to cool or heat up in real time according to the received battery pack temperature in the battery pack thermal management system (2) and the temperature of cooling water in the power cooling system (3), and controls the power cooling system (3) to start and stop a heat dissipation function.
8. The control method of the whole new energy automobile integrated heat management control system according to claim 7, wherein the whole automobile heat management controller (6) controls the heat pump air conditioning system (1) to operate and comprises the following steps:
step one, a user operates and selects an operation mode of the heat pump air-conditioning system (1) on a multimedia large screen (18), and the multimedia large screen (18) transmits an operation instruction to a finished automobile heat management controller (6);
step two, after receiving and processing an operation instruction of the multimedia large screen (18), the finished automobile heat management controller (6) directly controls corresponding components in the heat pump air-conditioning system (1) to operate;
step three, when the operation instruction is to start the refrigeration mode, the whole vehicle heat management controller (6) controls an electric compressor (11) in the heat pump air-conditioning system (1) to start, a temperature air door (13) is adjusted to a set orientation, an electronic expansion valve (16) is closed, a stop valve (17) is closed, and an air blower (115) is opened;
when the operation instruction is to start the heating mode, the whole vehicle thermal management controller (6) controls an electric compressor (11) in the heat pump air-conditioning system (1) to start, an air heater (12) is opened, a temperature air door (13) is adjusted to a set direction, an electronic expansion valve (16) is opened to a set opening degree, and a stop valve (17) is opened;
when the operation instruction is to start the defrosting mode, the whole vehicle heat management controller (6) controls a relay (116) in the heat pump air-conditioning system (1) to be turned on for direct defrosting.
9. The control method of the whole new energy automobile integrated heat management control system according to claim 7, wherein the whole automobile heat management controller (6) controls the battery pack heat management system (2) to operate and comprises the following steps:
step one, a battery management system (24) monitors the real-time temperature inside a battery pack and transmits the real-time temperature to a finished automobile heat management controller (6), and a battery pack inlet water temperature sensor (22) and a battery pack outlet water temperature sensor (23) respectively monitor the battery pack inlet water temperature and the battery pack outlet water temperature and transmit the temperature to the finished automobile heat management controller (6);
step two, the whole vehicle thermal management controller (6) controls corresponding components in the battery pack thermal management system (2) to operate and raises or lowers the temperature of the battery pack after comparing and analyzing the received real-time temperature inside the battery pack with an initial battery temperature set value; the whole vehicle thermal management controller (6) compares and analyzes the received battery pack inlet water temperature and the received battery pack outlet water temperature and then adjusts the running speed of corresponding components in the battery pack thermal management system (2);
step three, when the real-time temperature in the battery pack is greater than the initial battery temperature set value, the whole vehicle thermal management controller (6) controls an electronic expansion valve (26) in the battery pack thermal management system (2) to be opened, an electric compressor (11) increases the rotating speed, the power of a battery electronic water pump (25) is increased, part of refrigerant cold energy in a passenger cabin is introduced into the battery pack, and the temperature of the battery pack is reduced; when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle heat management controller (6) controls an electronic expansion valve (26) in the battery pack heat management system (2) to increase the opening, the electric compressor (11) increases the rotating speed, and the battery electronic water pump (25) increases the output power;
when the real-time temperature in the battery pack is lower than the initial battery temperature set value, the whole vehicle thermal management controller (6) controls a water heating heater (21) in the battery pack thermal management system (2) to start heating, so that the temperature of the battery pack is increased; and when the difference value between the water temperature at the inlet of the battery pack and the water temperature at the outlet of the battery pack is large, the whole vehicle heat management controller (6) controls a water heating heater (21) in the battery pack heat management system (2) to increase the output power.
10. The control method of the whole new energy automobile integrated heat management control system according to claim 7, wherein the whole automobile heat management controller (6) controls the power cooling system (3) to operate and comprises the following steps:
step one, the water temperature sensor (35) collects the temperature of cooling water in a cooling water pipe of a power management distribution unit (31), a motor controller (32), a charger (33) and a power conversion module (34) and transmits the temperature to a finished automobile heat management controller (6);
step two, the whole vehicle thermal management controller (6) controls corresponding components in the power cooling system (3) to operate after comparing and analyzing the temperature of the received cooling water with an initially set water temperature threshold;
and step three, the cooler fan (36), the electronic water pump (37) and the three-way water valve (38) are opened or closed so as to open or close the heat dissipation.
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Application publication date: 20200512 |