CN110712564A - Whole electric automobile heat management system and control method - Google Patents
Whole electric automobile heat management system and control method Download PDFInfo
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- CN110712564A CN110712564A CN201911009912.4A CN201911009912A CN110712564A CN 110712564 A CN110712564 A CN 110712564A CN 201911009912 A CN201911009912 A CN 201911009912A CN 110712564 A CN110712564 A CN 110712564A
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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
- 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
- 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
- B60H2001/003—Component temperature regulation using an air 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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- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a whole electric vehicle heat management system and a control method, and relates to the field of electric vehicles, wherein the whole electric vehicle heat management system comprises a passenger compartment, an air conditioning system, a heat management concentrator, a motor electric control heat dissipation system, a power battery, an auxiliary battery module, a vehicle-mounted charger module, a power switch module and an alternating current/direct current charging pile distinguishing circuit.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a whole electric automobile thermal management system and a control method of an electric automobile.
Background
At present, the environmental protection requirement is higher and higher, and the national requirement on the automobile exhaust emission is higher and higher, so that electric automobiles are more and more used.
However, the cruising ability of the electric automobile is obviously inferior to that of the fuel automobile, and besides the cruising ability of the electric automobile depends on the capacity of the battery, the cruising ability of the electric automobile is also related to the utilization rate of electric energy. Besides the electricity consumption of the motor, the electricity consumption of the air conditioner for temperature control is also large, the utilization rate of the current electric automobile for the whole automobile temperature control electricity consumption is not sufficient, and a lot of waste is caused.
Chinese patent application No. 201910126484.7 discloses an electric vehicle thermal management system, which connects a drive motor thermal management system and a power battery thermal management system, and couples an air conditioner thermal management system and the power battery thermal management system with each other. The scheme mainly adopts water cooling and water heating modes to control the temperature, so that the combination of the crew cabin, the engine and the power battery is difficult, the heating of the engine to the surrounding air and the recycling of the air conditioning cold air of the crew cabin are realized, and the scheme is not effectively utilized.
Disclosure of Invention
The invention aims to provide a whole electric vehicle heat management system and a control method, wherein a power battery of an electric vehicle needs to be subjected to temperature control, and a motor is a stable heat source in the driving process and is uniformly combined with a passenger compartment air conditioning system, so that the power battery is maintained in a stable and proper temperature environment, the proper temperature in a passenger compartment can be ensured, the heat management of the whole vehicle is integrated, the electric energy is saved, and the endurance is improved.
A novel electric automobile heat management system comprises a passenger cabin, an air conditioning system, a heat management concentrator, a motor electric control heat dissipation system, a power battery, an auxiliary battery module, a vehicle-mounted charger module, a power switch module and an alternating current/direct current charging pile distinguishing circuit;
the alternating current-direct current fills electric pile and differentiates the circuit and is connected with the power switch module, be equipped with on the power switch module and fill the interface that electric pile is connected, the power switch module is direct to be connected with power battery and auxiliary battery module, and the power switch module still is connected with power battery and auxiliary battery module through on-vehicle charger module, be equipped with first solenoid valve, second solenoid valve and third solenoid valve on the air pipe between air conditioning system and electrical system, motor system and the power battery respectively, and still be equipped with the fourth solenoid valve on the air pipe between motor electrical control cooling system and the power battery, first solenoid valve, second solenoid valve, third solenoid valve and fourth solenoid valve all are connected with the thermal management concentrator.
Preferably, the alternating current/direct current charging pile distinguishing circuit further comprises a power supply line access processing circuit, and the power switch module comprises a first power switch tube, a second power switch tube, a third power switch tube and a fourth power switch tube;
the charging pile, the first power switch tube and the power battery form a first direct current charging path;
the charging pile, the second power switch tube and the auxiliary battery module form a direct current charging path II;
the charging pile, the third power switch tube, the vehicle-mounted charger module and the power battery form an alternating current charging path I;
and the charging pile, the fourth power switch tube, the vehicle-mounted charger module and the auxiliary battery module form an alternating current charging path II.
Preferably, a fan and a heating film are arranged outside the power battery and used for controlling the temperature of the power battery, and the fan and the heating film are connected with the auxiliary battery module.
The management mechanism applied to the novel electric vehicle heat management system comprises a charging heat management mechanism, a vehicle starting management mechanism and a vehicle process heat management mechanism,
the charging thermal management mechanism is as follows:
when the electric automobile is connected to a charging pile for charging, the temperature of the power battery is detected;
if the temperature of the battery is less than 0 ℃, heating the power battery until the temperature of the power battery is less than 5 ℃, and starting charging;
if the temperature of the battery is lower than 0 ℃ and lower than 35 ℃, directly starting to charge the power battery;
if the temperature of the power battery is lower than 35 ℃, cooling the power battery, and starting charging until the temperature of the power battery is lower than 35 ℃ and controlling the temperature of the power battery to be between 20 ℃ and 35 ℃;
if the temperature of the battery is greater than 55 ℃, stopping a power supply system of the power battery, cooling the power battery until the temperature of the power battery is less than 35 ℃, then recovering the power supply system of the power battery, and starting to charge the power battery;
the vehicle starting management mechanism comprises the following steps:
when the electric automobile is started to prepare for use, the temperature of the power battery is detected firstly;
if the temperature of the battery is less than 0 ℃, heating the power battery until the temperature of the power battery is less than 5 ℃, then stopping heating, and starting the automobile to use the automobile;
if the battery temperature is lower than 0 ℃ and lower than 35 ℃, directly starting to use the vehicle;
if the temperature of the power battery is lower than 35 ℃, cooling the power battery, and starting the automobile when the temperature of the power battery is lower than 35 ℃;
if the temperature of the battery is greater than 55 ℃, stopping the power battery power supply system, cooling the power battery until the temperature of the power battery is less than 35 ℃, then recovering the power battery power supply system, and starting the automobile to use the automobile;
the heat management mechanism of the vehicle using process is as follows:
when the vehicle runs in a high-temperature environment, the air conditioning system conveys cold air to the passenger cabin, meanwhile, air is sucked from the passenger cabin and conveyed to the electric control system, the motor system and the power battery, and meanwhile, the electric control heat dissipation system of the motor and the fans 1-11 synchronously run to dissipate heat for the electric control system, the motor system and the power battery;
when the vehicle travels in a low-temperature environment, the air conditioning system draws air from the electric control system and the motor where the motor system is located and the electric control cabin, and conveys hot air to the passenger cabin, and meanwhile, the air conditioning system and the heating film heat the power battery, and the temperature of the power battery is controlled between 20 ℃ and 35 ℃.
Preferably, the charging heat management mechanism automatically starts after the power switch module is connected with the charging pile, and ends until the power switch module is disconnected with the charging pile; the vehicle starting management mechanism automatically starts when the vehicle is started and ends after the motor system is started; the heat management mechanism starts after the motor system is started and ends after the automobile is stopped and flamed out.
Preferably, in the charging process, if the temperature of the power battery is greater than 55 ℃, the charging is stopped, and the power battery is cooled until the temperature of the power battery is less than 35 ℃ and then the charging is resumed.
Preferably, in the vehicle using process in the low-temperature environment, if the temperature of the power battery is higher than 35 ℃, the power battery is stopped being heated, meanwhile, the air conditioning system performs air extraction on the power battery cabin, and hot air is conveyed to the passenger cabin.
Preferably, the air conditioning system is arranged at the top of the passenger compartment at the air supply outlet of the passenger compartment, and the air conditioning system is arranged at the bottom of the passenger compartment at the air suction outlet of the passenger compartment.
The invention has the advantages that: the power battery of the electric automobile needs to be subjected to temperature control, the motor is a stable heat source in the driving process, the two parts are uniformly combined with the air conditioning system of the passenger compartment, the power battery is maintained in a stable and proper temperature environment, the temperature in the passenger compartment can be ensured to be proper, the heat management of the whole automobile is integrated, the electric energy is saved, and the cruising duration is improved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the internal structure of a power switch module in the system of the present invention;
FIG. 3 is a flow chart of the charging thermal management mechanism of the present invention;
FIG. 4 is a flowchart of the vehicle launch management mechanism of the present invention;
FIG. 5 is a flowchart illustrating the thermal management mechanism of the present invention during a vehicle operation;
wherein, 1-1, a passenger cabin, 1-2, an air conditioning system, 1-3, a heat management concentrator, 1-4, a motor electric control heat dissipation system, 1-5, a first electromagnetic valve, 1-6, a second electromagnetic valve, 1-7, a third electromagnetic valve, 1-8, a fourth electromagnetic valve, 1-9, a power battery, 1-10, an auxiliary battery module, 1-11, the device comprises a fan, 1-12 parts of a vehicle-mounted charger module, 1-13 parts of a power switch module, 1-14 parts of an alternating current/direct current charging module, 1-16 parts of a charging pile, 2-1 parts of a power supply line access processing circuit, 2-2 parts of a first power switch tube, 2-3 parts of a second power switch tube, 2-4 parts of a third power switch tube, 2-5 parts of a fourth power switch tube.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The first embodiment is as follows:
as shown in fig. 1-5, a novel electric vehicle thermal management system comprises a passenger compartment 1-1, an air conditioning system 1-2, a thermal management hub 1-3, a motor electric control heat dissipation system 1-4, a power battery 1-9, an auxiliary battery module 1-10, a vehicle-mounted charger module 1-12, a power switch module 1-13 and an alternating current/direct current charging pile identification circuit 1-14;
the alternating current-direct current charging pile distinguishing circuit 1-14 is connected with a power switch module 1-13, an interface connected with a charging pile 1-16 is arranged on the power switch module 1-13, the power switch module 1-13 is directly connected with a power battery 1-9 and an auxiliary battery module 1-10, the power switch module 1-13 is also connected with the power battery 1-9 and the auxiliary battery module 1-10 through a vehicle-mounted charger module 1-12, a first electromagnetic valve 1-5, a second electromagnetic valve 1-6 and a third electromagnetic valve 1-7 are respectively arranged on a ventilation pipeline between the air conditioning system 1-2 and an electric control system, between the motor system and the power battery 1-9, a fourth electromagnetic valve 1-8 is also arranged on a ventilation pipeline between the electric control heat dissipation system 1-4 of the motor and the power battery 1-9, the first solenoid valves 1-5, the second solenoid valves 1-6, the third solenoid valves 1-7 and the fourth solenoid valves 1-8 are all connected with the thermal management hub 1-3.
The alternating current and direct current charging pile distinguishing circuit 1-14 further comprises a power supply line access processing circuit 2-1, and the power switch module 1-13 comprises a first power switch tube 2-2, a second power switch tube 2-3, a third power switch tube 2-4 and a fourth power switch tube 2-5; the first power switch tube 2-2, the second power switch tube 2-3, the third power switch tube 2-4 and the fourth power switch tube 2-5 are all connected with an alternating current and direct current charging pile distinguishing circuit 1-14, the alternating current and direct current charging pile distinguishing circuit 1-14 identifies whether the charging pile 1-16 is charged by alternating current or direct current, and the alternating current and direct current charging pile distinguishing circuit 1-14 can control the first power switch tube 2-2, the second power switch tube 2-3, the third power switch tube 2-4 and the fourth power switch tube 2-5 to be switched on or off:
the charging pile 1-16, the first power switch tube 2-2 and the power battery 1-9 form a direct current charging path I;
the charging pile 1-16, the second power switch tube 2-3 and the auxiliary battery module 1-10 form a direct current charging path II;
the charging pile 1-16, the third power switch tube 2-4, the vehicle-mounted charger module 1-12 and the power battery 1-9 form an alternating current charging path I;
and the charging pile 1-16, the fourth power switch tube 2-5, the vehicle-mounted charger module 1-12 and the auxiliary battery module 1-10 form an alternating current charging path II.
The power battery 1-9 is also externally provided with a fan 1-11 and a heating film for controlling the temperature of the power battery 1-9, and the fan 1-11 and the heating film are connected with the auxiliary battery module 1-10.
If the charging piles 1-16 are charged by alternating current, the alternating current and direct current charging pile distinguishing circuits 1-14 control the third power switch tubes 2-4 and the fourth power switch tubes 2-5 to be conducted, the direct current charging path I and the direct current charging path II are conducted, and the charging piles 1-16 charge the power batteries 1-9 and the auxiliary battery modules 1-10 through the vehicle-mounted charger module 5;
if the charging piles 1-16 are charged by direct current, the alternating current and direct current charging pile distinguishing circuit 1-14 controls the first power switch tube 2-2 and the second power switch tube 2-3 to be conducted, the alternating current charging path I and the alternating current charging path II are conducted, and the charging piles 1-16 directly charge the power batteries 1-9 and the auxiliary battery modules 1-10.
An interlocking mechanism is arranged between the first direct current charging path and the first alternating current charging path, one path is connected, the other path is necessarily disconnected, an interlocking mechanism is arranged between the second direct current charging path and the second alternating current charging path, and the other path is connected, the other path is necessarily disconnected.
Example two:
the management mechanism applied to the novel electric vehicle heat management system comprises a charging heat management mechanism, a vehicle starting management mechanism and a vehicle process heat management mechanism,
the charging thermal management mechanism is as follows:
when the electric automobile is connected to the charging piles 1-16 to be charged, the temperature of the power batteries 1-9 is detected;
the battery temperature is less than 0 ℃, the auxiliary battery module 1-10 and the heating film are started, the heating function of the air conditioning system 1-2 is also started, the power battery 1-9 is heated until the temperature of the power battery 1-9 is less than 5 ℃, then the heating is stopped, and the power battery 1-9 is charged;
if the temperature of the battery is 0 ℃ and less than 35 ℃, directly starting to charge the power battery 1-9;
if the temperature of the auxiliary battery module 1-10 is less than or equal to 55 ℃, the auxiliary battery module 1-10 and the fan 1-11 are started, the refrigeration function of the air conditioning system 1-2 is also started, the power battery 1-9 is cooled until the temperature of the power battery 1-9 is less than 35 ℃, then the power battery 1-9 is charged, and the temperature of the power battery 1-9 is controlled between 20 ℃ and 35 ℃;
if the temperature of the battery is greater than 55 ℃, stopping a power supply system of the power battery 1-9, disconnecting the power battery 1-9, starting an auxiliary battery module 1-10 and a fan 1-11, starting a refrigeration function of an air conditioning system 1-2, cooling the power battery 1-9 until the temperature of the power battery 1-9 is less than 35 ℃, recovering the power supply system of the power battery 1-9, and starting to charge the power battery 1-9; in the charging process, the power batteries 1-9 are disconnected when the temperature is too high, and the charging is stopped.
The vehicle starting management mechanism comprises the following steps:
if the temperature of the battery is less than 0 ℃, starting the auxiliary battery module 1-10 and the heating film, heating the power battery 1-9 until the temperature of the power battery 1-9 is less than 5 ℃, then stopping heating the power battery 1-9, and starting the automobile;
if the battery temperature is lower than 0 ℃ and lower than 35 ℃, directly starting to use the vehicle;
if the temperature of the auxiliary battery module 1-10 is less than or equal to 55 ℃, the auxiliary battery module 1-10 and the fan 1-11 are started, the refrigeration function of the air conditioning system 1-2 is also started, the power battery 1-9 is cooled, the air conditioning system 1-2 is shut down when the temperature of the power battery 1-9 is lower than 42 ℃, the automobile starts to start the automobile when the temperature of the power battery 1-9 is less than 35 ℃, and the temperature of the power battery 1-9 is controlled between 20 ℃ and 35 ℃ in the automobile using process;
if the temperature of the battery is greater than 55 ℃, stopping a power supply system of the power battery 1-9, disconnecting the power battery 1-9, starting an auxiliary battery module 1-10 and a fan 1-11, starting a refrigeration function of an air conditioning system 1-2, cooling the power battery 1-9 until the temperature of the power battery 1-9 is less than 35 ℃, recovering the power supply system of the power battery 1-9, and starting the automobile to use the automobile; during driving, the temperature of the power batteries 1-9 is too high, an alarm can be given, but the power batteries 1-9 cannot be disconnected.
The heat management mechanism of the vehicle using process is as follows:
when the vehicle runs in a high-temperature environment, the air conditioning system 1-2 conveys cold air to the passenger cabin 1-1, simultaneously exhausts air from the passenger cabin 1-1 and conveys the air to the electric control system, the motor system and the power battery 1-9, and simultaneously the electric control heat dissipation system 1-4 of the motor and the fan 1-11 synchronously run to dissipate heat for the electric control system, the motor system and the power battery 1-9; the air blowing port of the passenger cabin 1-1 is arranged at the top of the passenger cabin 1-1, and the air suction port is arranged at the bottom of the passenger cabin 1-1, so that the temperature of the passenger cabin 1-1 is ensured, cold air is fully utilized, and energy is saved.
When the vehicle travels in a low-temperature environment, the air conditioning system 1-2 draws air from a motor and an electric control cabin where the electric control system and the motor system are located, and conveys hot air to the passenger cabin 1-1, meanwhile, the air conditioning system 1-2 and a heating film heat the power battery 1-9, the temperature of the power battery 1-9 is controlled to be 20-35 ℃, if the temperature of the power battery 1-9 is more than 35 ℃, the power battery 1-9 stops being heated, meanwhile, the air conditioning system 1-2 draws air to the power battery cabin, and conveys hot air to the passenger cabin 1-1, the air conditioning system 1-2 also heats the passenger cabin 1-1, and the temperature in the passenger cabin 1-1 is ensured to be proper. The heat generated by the motor and the battery during working is fully utilized, the electric energy is saved, and the endurance is improved.
The charging heat management mechanism automatically starts after the power switch modules 1-13 are connected with the charging piles 1-16, and ends until the power switch modules 1-13 are disconnected with the charging piles 1-16; the vehicle starting management mechanism automatically starts when the vehicle is started and ends after the motor system is started; the heat management mechanism starts after the motor system is started and ends after the automobile is stopped and flamed out.
In the charging process, if the temperature of the power battery 1-9 is greater than 55 ℃, the charging is stopped, the power battery 1-9 is cooled, and the charging is resumed until the temperature of the power battery 1-9 is less than 35 ℃. When the temperature of the power battery 1-9 is more than 55 ℃, great potential safety hazard exists, and the power battery 1-9 is disconnected at the moment, so that the safety is ensured.
The air-conditioning system 1-2 is arranged at the top of the passenger cabin 1-1 at an air supply outlet of the passenger cabin 1-1, and the air-conditioning system 1-2 is arranged at the bottom of the passenger cabin 1-1 at an air suction outlet of the passenger cabin 1-1. The cool air sinks, ensuring a proper temperature in the passenger compartment 1-1.
The specific implementation mode and principle are as follows:
when the electric automobile is driven in summer, the electric automobile is very fast in power consumption, because the electric motor needs to be supplied with power, a driver can also turn on the air conditioner and needs to supply power to the air conditioner, and in summer, the temperature of the power battery and the electric control system is easily overhigh, the power battery and the electric control system need to be cooled, and a large amount of electric energy can be consumed;
therefore, when the vehicle travels in a high-temperature environment, firstly, the air conditioning system 1-2 conveys cold air to the passenger cabin 1-1, the heat management concentrator 1-3 opens the first electromagnetic valve 1-5, the second electromagnetic valve 1-6 and the third electromagnetic valve 1-7, the air conditioning system 1-2 draws air from the passenger cabin 1-1 and conveys the air to the electric control system, the motor system and the power battery 1-9 (the air blowing port of the passenger cabin 1-1 is arranged at the top of the passenger cabin 1-1, and the air drawing port is arranged at the bottom of the passenger cabin 1-1), meanwhile, the electric control heat dissipation system 1-4 of the motor and the fan 1-11 synchronously operate as the electric control system, the motor system and the power battery 1-9 to dissipate heat, if the temperature of the power battery 1-9 is not dissipated (continuously higher than 35 ℃), the air conditioning system 1-2 independently refrigera, and delivering cold air to match with the fans 1-11 for cooling.
In winter, particularly in the north, the external environment is very cold, so that a driver needs to turn on an air conditioner to warm and needs to heat the power battery 1-9, the power battery 1-9 is prevented from discharging under the environment with too low temperature to influence the service life (the heat generated by the power battery 1-9 per se may be insufficient), and the power consumption is very fast;
therefore, when the vehicle travels in a low-temperature environment, the electric control system and the motor system are stable heat sources, and the temperatures of the electric control system and the motor system are wasted due to dissipation, so that the air-conditioning system 1-2 draws air from the motor and the electric control cabin where the electric control system and the motor system are located, and transmits hot air to the passenger cabin 1-1, meanwhile, the air-conditioning system 1-2 and the heating film heat the power battery 1-9, the temperature of the power battery 1-9 is controlled between 20 ℃ and 35 ℃, if the temperature of the power battery 1-9 is greater than 35 ℃, the power battery 1-9 stops being heated, meanwhile, the air-conditioning system 1-2 draws air to the power battery cabin, and transmits hot air to the passenger cabin 1-1, and if the temperature of the passenger cabin 1-1 is too low, a driver can control the air-conditioning system 1-2 to simultaneously heat the passenger cabin 1-1, ensuring that the temperature in the passenger compartment 1-1 is appropriate.
In a usual environment, the air conditioning system 1-2 is matched with the fan 1-11 and the heating film to ensure that the temperature of the power battery 1-9 is controlled between 20 ℃ and 35 ℃, the fan 1-11 and the heating film are both supplied with power by the auxiliary battery module 1-10, the auxiliary battery module 1-10 is also used as a standby power supply, and necessary electric equipment is supplied with power when the power battery 1-9 is disconnected (the power battery 1-9 is disconnected at more than 55 ℃ in a non-driving process).
Based on the above, the power battery of the electric vehicle needs to be subjected to temperature control, and the motor is a stable heat source in the driving process, and the two parts are uniformly combined with the air conditioning system of the passenger compartment, so that the power battery is maintained in a stable and proper temperature environment, the proper temperature in the passenger compartment can be ensured, the heat management of the whole vehicle is integrated, the electric energy is saved, and the endurance is improved.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. The whole electric automobile heat management system is characterized by comprising a passenger cabin (1-1), an air conditioning system (1-2), a heat management hub (1-3), a motor electric control heat dissipation system (1-4), a power battery (1-9), an auxiliary battery module (1-10), a vehicle-mounted charger module (1-12), a power switch module (1-13) and an alternating current and direct current charging pile distinguishing circuit (1-14);
the alternating current and direct current charging pile distinguishing circuit (1-14) is connected with a power switch module (1-13), an interface connected with a charging pile (1-16) is arranged on the power switch module (1-13), the power switch module (1-13) is directly connected with a power battery (1-9) and an auxiliary battery module (1-10), the power switch module (1-13) is also connected with the power battery (1-9) and the auxiliary battery module (1-10) through a vehicle-mounted charger module (1-12), a first electromagnetic valve (1-5), a second electromagnetic valve (1-6) and a third electromagnetic valve (1-7) are respectively arranged on a ventilation pipeline between the air conditioning system (1-2) and an electric control system, between a motor system and the power battery (1-9), and a fourth electromagnetic valve (1-8) is further arranged on a ventilation pipeline between the motor electric control heat dissipation system (1-4) and the power battery (1-9), and the first electromagnetic valve (1-5), the second electromagnetic valve (1-6), the third electromagnetic valve (1-7) and the fourth electromagnetic valve (1-8) are all connected with the heat management hub (1-3).
2. The whole electric vehicle heat management system according to claim 1, characterized in that: the alternating current and direct current charging pile distinguishing circuit (1-14) further comprises a power supply line access processing circuit (2-1), and the power switch module (1-13) comprises a first power switch tube (2-2), a second power switch tube (2-3), a third power switch tube (2-4) and a fourth power switch tube (2-5);
the charging pile (1-16), the first power switch tube (2-2) and the power battery (1-9) form a direct current charging path I;
the charging piles (1-16), the second power switch tubes (2-3) and the auxiliary battery modules (1-10) form a direct current charging path II;
the charging pile (1-16), the third power switch tube (2-4), the vehicle-mounted charger module (1-12) and the power battery (1-9) form a first alternating current charging path;
the charging pile (1-16), the fourth power switch tube (2-5), the vehicle-mounted charger module (1-12) and the auxiliary battery module (1-10) form an alternating current charging path II.
3. The whole electric vehicle heat management system according to claim 2, characterized in that: the power battery (1-9) is also externally provided with a fan (1-11) and a heating film for controlling the temperature of the power battery (1-9), and the fan (1-11) and the heating film are connected with the auxiliary battery module (1-10).
4. The control method applied to the whole electric vehicle thermal management system of claim 3 is characterized in that: comprises a charging heat management mechanism, a vehicle starting management mechanism and a vehicle using process heat management mechanism,
the charging thermal management mechanism is as follows:
when the electric automobile is connected into the charging piles (1-16) to be charged, the temperature of the power batteries (1-9) is detected;
if the battery temperature is less than 0 ℃, heating the power battery (1-9) until the temperature of the power battery (1-9) is less than 5 ℃, and starting charging;
if the temperature of the battery is 0 ℃ and less than 35 ℃, directly starting to charge the power battery (1-9);
if the temperature of the power battery (1-9) is lower than 35 ℃, the power battery (1-9) is cooled until the temperature of the power battery (1-9) is lower than 35 ℃, charging is started, and the temperature of the power battery (1-9) is controlled to be between 20 ℃ and 35 ℃;
if the temperature of the battery is greater than 55 ℃, stopping a power supply system of the power battery (1-9), cooling the power battery (1-9) until the temperature of the power battery (1-9) is less than 35 ℃, then recovering the power supply system of the power battery (1-9), and starting to charge the power battery (1-9);
the vehicle starting management mechanism comprises the following steps:
when the electric automobile is started to prepare for use, the temperature of the power batteries (1-9) is detected firstly;
if the temperature of the battery is less than 0 ℃, heating the power battery (1-9) until the temperature of the power battery (1-9) is 5 ℃, then stopping heating, and starting the automobile;
if the battery temperature is lower than 0 ℃ and lower than 35 ℃, directly starting to use the vehicle;
if the temperature of the power battery (1-9) is lower than 35 ℃, the power battery (1-9) is cooled, and when the temperature of the power battery (1-9) is lower than 35 ℃, the automobile starts to use;
if the temperature of the battery is greater than 55 ℃, stopping the power supply system of the power battery (1-9), cooling the power battery (1-9) until the temperature of the power battery (1-9) is less than 35 ℃, then recovering the power supply system of the power battery (1-9), and starting the automobile to use;
the heat management mechanism of the vehicle using process is as follows:
when the vehicle runs in a high-temperature environment, the air conditioning system (1-2) conveys cold air to the passenger cabin (1-1), meanwhile, air is extracted from the passenger cabin (1-1) and conveyed to the electric control system, the motor system and the power battery (1-9), and meanwhile, the electric control heat dissipation system (1-4) of the motor and the fan (1-11) synchronously run to dissipate heat for the electric control system, the motor system and the power battery (1-9);
when the vehicle travels in a low-temperature environment, the air conditioning system (1-2) draws air from a motor and an electric control cabin where the electric control system and the motor system are located, and conveys hot air to the passenger cabin (1-1), meanwhile, the air conditioning system (1-2) and the heating film heat the power battery (1-9), and the temperature of the power battery (1-9) is controlled between 20 ℃ and 35 ℃.
5. The control method for overall thermal management of the electric automobile according to claim 4, characterized in that: the charging heat management mechanism automatically starts after the power switch modules (1-13) are connected with the charging piles (1-16) until the power switch modules (1-13) are disconnected with the charging piles (1-16); the vehicle starting management mechanism automatically starts when the vehicle is started and ends after the motor system is started; the heat management mechanism starts after the motor system is started and ends after the automobile is stopped and flamed out.
6. The control method for overall thermal management of the electric automobile according to claim 4, characterized in that: in the charging process, if the temperature of the power battery (1-9) is greater than 55 ℃, the charging is stopped, the power battery (1-9) is cooled, and the charging is resumed until the temperature of the power battery (1-9) is less than 35 ℃.
7. The control method for overall thermal management of the electric automobile according to claim 4, characterized in that: in the process of using the vehicle in the low-temperature environment, if the temperature of the power battery (1-9) is higher than 35 ℃, the power battery (1-9) stops being heated, meanwhile, the air conditioning system (1-2) performs air extraction on the power battery cabin, and hot air is conveyed to the passenger cabin (1-1).
8. The control method for overall thermal management of the electric automobile according to claim 4, characterized in that: the air conditioning system (1-2) is arranged at the top of the passenger cabin (1-1) at an air supply outlet of the passenger cabin (1-1), and the air conditioning system (1-2) is arranged at the bottom of the passenger cabin (1-1) at an air suction outlet of the passenger cabin (1-1).
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Application publication date: 20200121 |