CN107696850B - Dual-medium electric automobile motor cooling system capable of supplying warm air - Google Patents
Dual-medium electric automobile motor cooling system capable of supplying warm air Download PDFInfo
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- CN107696850B CN107696850B CN201710944735.3A CN201710944735A CN107696850B CN 107696850 B CN107696850 B CN 107696850B CN 201710944735 A CN201710944735 A CN 201710944735A CN 107696850 B CN107696850 B CN 107696850B
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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
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
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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
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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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
Abstract
The invention relates to a motor cooling system of a double-medium electric automobile capable of heating air, which is characterized by comprising an A-end two-position three-way electromagnetic valve, a B-end two-position three-way electromagnetic valve, a wind pressure sensor, a water flow sensor, an electronic control unit ECU, an air filter, a multi-position three-way electromagnetic valve, an in-car temperature sensor, a cab pipeline, an atmosphere pipeline and an in-car control console; one inlet of the A-end two-position three-way electromagnetic valve is connected with one end of a cooling liquid cooling flow passage, a radiating water tank is arranged on the cooling liquid cooling flow passage, and a circulating water pump is arranged on the cooling liquid cooling flow passage between an outlet of the radiating water tank and an inlet of the A-end two-position three-way electromagnetic valve; the other inlet of the two-position three-way electromagnetic valve at the end A is connected with a blower used in a motor cooling chamber through an air cooling flow passage, and an air filter is arranged in front of the inlet of the blower; the outlet of the end A two-position three-way electromagnetic valve is connected with the inlet of the motor cooling chamber; the outlet of the motor cooling chamber is connected with the inlet of the B-end two-position three-way electromagnetic valve.
Description
Technical Field
The invention relates to a motor cooling system of a double-medium electric automobile capable of heating air, which can select a used cooling medium according to seasons and can heat the interior of the automobile by utilizing motor waste heat under air cooling.
Background
At present, cooling of an electric automobile driving motor is as described in a document (Song Jian. Study of an electric automobile driver cooling system [ J ]. Innovative and scientific report 2015 (4): 49-49.), part of the electric automobile driving motor is cooled by liquid, and the other part of the electric automobile driving motor is cooled by air, and all the electric automobile driving motor is cooled by a single medium. But in summer with extremely high temperature, the temperature of the air is high, so that the cooling effect of the air cooling on the motor is poor, the service life and the service efficiency of the motor are further influenced, and the liquid cooling effect is better than that of the air cooling; however, at present, no matter an air cooling system or a cooling liquid cooling system is adopted in a pure electric vehicle, a warm air system carried by the pure electric vehicle is as stated in literature (Wang Ying, ding Peng, gao Jian. Development of a warm air system of the pure electric vehicle [ J ]. Automobile practical technology, 2016 (11): 15-17 ]) basically adopts a PTC electric heater similar to a traditional vehicle, and the air inlet quantity is improved by means of an air conditioner blower, and a great amount of electric energy is consumed by the electric heater and the air conditioner blower. Aiming at the current situation of a cooling system of a driving motor of an electric automobile and a warm air system thereof, the invention combines two cooling media in consideration of better air cooling effect when the temperature is lower in winter, and adopts air for cooling when the temperature is lower in winter, and the part of high-temperature gas which is increased by the cooling temperature of the motor can be led into the automobile to form warm air, so that a large amount of electric energy consumed by the operation of an electric heater and an air conditioner blower thereof can be saved, and the endurance mileage of the electric automobile is improved; the motor can be cooled by the cooling liquid in other seasons with higher temperature, so that the cooling efficiency of the motor is improved, and the service life of the motor is prolonged. Promoting the development of electric automobiles.
Disclosure of Invention
In order to improve the cooling efficiency of the motor of the electric automobile, prolong the service life, conform to the trend of energy conservation and environmental protection of the electric automobile, solve the problem of energy waste of the existing electric automobile, the invention provides a double-medium electric automobile motor cooling system capable of supplying warm air.
The technical scheme adopted by the invention is as follows:
a dual-medium electric automobile motor cooling system capable of supplying warm air is characterized by comprising an A-end two-position three-way electromagnetic valve, a B-end two-position three-way electromagnetic valve, a wind pressure sensor, a water flow sensor, an electronic control unit ECU, an air filter, a multi-position three-way electromagnetic valve, an in-vehicle temperature sensor, a cabin pipeline, an atmosphere pipeline and an in-vehicle console;
one inlet of the A-end two-position three-way electromagnetic valve is connected with one end of a cooling liquid cooling flow passage, a radiating water tank is arranged on the cooling liquid cooling flow passage, and a circulating water pump is arranged on the cooling liquid cooling flow passage between an outlet of the radiating water tank and an inlet of the A-end two-position three-way electromagnetic valve; the other inlet of the two-position three-way electromagnetic valve at the end A is connected with a blower used in a motor cooling chamber through an air cooling flow passage, and an air filter is arranged in front of the inlet of the blower; the outlet of the end A two-position three-way electromagnetic valve is connected with the inlet of the motor cooling chamber; the outlet of the motor cooling chamber is connected with the inlet of the B-end two-position three-way electromagnetic valve, one outlet of the B-end two-position three-way electromagnetic valve is connected with one end of the warm air flow passage, and the other outlet of the B-end two-position three-way electromagnetic valve is connected with the inlet of the radiating water tank through the cooling liquid cooling flow passage; a wind pressure sensor for detecting a wind pressure signal is arranged in an air cooling flow passage between the blower and the A-end two-position three-way electromagnetic valve, and a water flow sensor is arranged in a cooling liquid cooling flow passage between the inlet of the radiating water tank and the outlet of the B-end two-position three-way electromagnetic valve;
the multi-position three-way electromagnetic valve is provided with an inlet, two outlets, a left valve body and a right valve body, the left valve body and the right valve body are sequentially connected through valve cores, the inlet of the multi-position three-way electromagnetic valve is connected with the other end of the warm air flow channel, one outlet of the multi-position three-way electromagnetic valve is communicated with the cockpit through a cockpit pipeline, and the other outlet of the multi-position three-way electromagnetic valve is communicated with the outside atmosphere through an atmosphere pipeline; the position where the warm air flow channel and the pipeline of the through cockpit are just completely closed is the initial position of the multi-position three-way electromagnetic valve; the warm air flow channel and the ventilation air pipeline are just completely closed, the position where the warm air flow channel and the ventilation cabin pipeline are just completely connected is the farthest position of the multi-position three-way electromagnetic valve, and the maximum input current at the farthest position is M; the multi-position three-way electromagnetic valve can be positioned at any position between an initial position and a farthest position;
the in-vehicle control console is used for controlling the starting and closing of the cooling system and setting the temperature in the vehicle and is arranged on an in-vehicle operation interface of the electric vehicle; an in-vehicle temperature sensor for detecting the temperature in the vehicle is arranged on the electric vehicle;
the electronic control unit ECU is arranged inside the electric automobile and is simultaneously connected with a multi-position three-way electromagnetic valve, an A-end two-position three-way electromagnetic valve, a B-end two-position three-way electromagnetic valve, an electromagnetic clutch for controlling the work of the blower, an electromagnetic clutch for controlling the work of the circulating water pump, a wind pressure sensor, a water flow sensor, an in-automobile control console and an in-automobile temperature sensor, so that the work of each electromagnetic valve, the blower and the circulating water pump is controlled.
Compared with the prior art, the invention has the beneficial effects that:
the system combines two cooling media of air and cooling liquid together, plays the advantages of the respective cooling media in different seasons respectively, can cool by using air with lower air temperature in winter and cool the motor in seasons with relatively higher temperatures in spring, summer and autumn, has better effect compared with a cooling system with a single cooling medium, can improve the cooling efficiency of the motor and prolong the service life of the motor; the air medium is used for cooling in winter, the temperature of the air is higher after the air is cooled by the motor cooling chamber, the part of high-temperature gas can be introduced into the vehicle to form warm air, the heating effect is better, and the energy consumption can be reduced. Compared with the traditional warm air system, the electric heater and the air conditioner blower structure corresponding to the electric heater are omitted, so that the energy utilization efficiency is improved, the use of battery energy is reduced to a certain extent, and the endurance mileage of the electric automobile is improved.
According to the invention, the multi-position three-way electromagnetic valve is respectively connected with the warm air flow passage, the cockpit pipeline and the atmosphere pipeline, the flow direction of air is controlled by the valve core moving position of the multi-position three-way electromagnetic valve, the valve core position is controlled by inputting different currents to the multi-position three-way electromagnetic valve by the electronic control unit ECU according to the signal of the temperature sensor in the automobile, and when the warm air is supplied, the flow of high-temperature air flowing into the automobile can be better controlled by the multi-position three-way electromagnetic valve, so that the temperature in the automobile can be better controlled.
Drawings
FIG. 1 is a schematic diagram of a motor cooling system for a dual-medium electric vehicle capable of supplying warm air;
FIG. 2 is a control block diagram of a motor cooling system of a dual-medium electric vehicle for supplying warm air according to the present invention;
FIG. 3 (a) is a schematic view of the structure of the initial position of the multi-position three-way solenoid valve when the power is off, wherein the inlet of the multi-position three-way solenoid valve is communicated with the atmosphere-passing pipeline, and the high-temperature gas is completely discharged to the atmosphere;
FIG. 3 (b) is a schematic structural view of a multi-position three-way solenoid valve, wherein the multi-position three-way solenoid valve has a plurality of working positions according to the magnitude of input current, the input current X is between 0 and M, the working positions embody the working principle of the three-way solenoid valve, and high-temperature gas can be discharged to the atmosphere and can be led into a vehicle;
FIG. 3 (c) is a schematic diagram of the structure of the farthest operating position of the multi-position three-way solenoid valve when maximum current is introduced, and the high temperature gas is completely discharged to heat the vehicle;
FIG. 4 (a) is a schematic diagram of the initial position of the A-end two-position three-way electromagnetic valve when the power is off, wherein the inlet of the A-end two-position three-way electromagnetic valve is connected with a cooling fluid flow channel, and the inlet is communicated with a motor cooling chamber, and the cooling fluid enters the motor cooling chamber for cooling;
FIG. 4 (b) is a schematic diagram of the position of the solenoid valve when the A-end two-position three-way solenoid valve is energized, wherein the inlet of the A-end two-position three-way solenoid valve is connected with an air cooling flow passage, the inlet is communicated with a motor cooling chamber, and air enters the motor cooling chamber for cooling;
FIG. 4 (c) is a schematic diagram of the initial position of the B-side two-position three-way electromagnetic valve when the B-side two-position three-way electromagnetic valve is powered off, wherein the inlet of the B-side two-position three-way electromagnetic valve is connected with the motor cooling chamber, the inlet and the outlet of the B-side two-position three-way electromagnetic valve are communicated with the cooling flow channel of the cooling liquid, and the cooling liquid enters the cooling water tank to dissipate heat;
FIG. 4 (d) is a schematic diagram of the position of the solenoid valve when the B-side two-position three-way solenoid valve is energized, at this time, the inlet of the B-side two-position three-way solenoid valve is connected with the motor cooling chamber, and the inlet is communicated with the warm air flow passage, and air enters the warm air.
In the figure, a radiating water tank 1, a cooling liquid cooling flow passage 2, a circulating water pump 3, a 4A end two-position three-way electromagnetic valve, a 5B end two-position three-way electromagnetic valve, a 6 motor cooling chamber, a 7 wind pressure sensor, an 8 water flow sensor, a 9 electronic control unit ECU, a 10 air filter, an 11 blower, a 12 multi-position three-way electromagnetic valve, a 13 in-vehicle temperature sensor, a 14 in-cabin pipeline, a 15 in-air pipeline, a 16 in-vehicle control console, a 17 air cooling flow passage and a 18 warm air flow passage.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, which should not be construed as limiting the scope of the claims.
The invention can supply the warm air the double-medium electric automobile motor cooling system (cooling system or system for short, see figure 1) includes two-position three-way electromagnetic valves (A end two-position three-way electromagnetic valve 4 and B end two-position three-way electromagnetic valve 5), the wind pressure sensor 7, the water flow sensor 8, the electronic control unit ECU9, the air cleaner 10, the multi-position three-way electromagnetic valve 12, the temperature sensor 13 in the car, the cabin-through pipeline 14, the atmosphere-through pipeline 15 and the control console 16 in the car;
one inlet of the A-end two-position three-way electromagnetic valve 4 is connected with one end of a cooling liquid cooling flow passage, a radiating water tank 1 is arranged on the cooling liquid cooling flow passage, and a circulating water pump 3 is arranged on the cooling liquid cooling flow passage between an outlet of the radiating water tank 1 and an inlet of the A-end two-position three-way electromagnetic valve 4; the other inlet of the end A two-position three-way electromagnetic valve 4 is connected with a blower 11 used for a motor cooling chamber through an air cooling flow passage 17, an air filter 10 is arranged in front of the inlet of the blower, the air filter 10 is used for filtering cooling air entering the motor cooling chamber 6, impurities are prevented from entering the motor cooling chamber 6 to damage a motor, the service life of the motor is influenced, and meanwhile, the filtered air has high freshness and can be directly led into a vehicle to form warm air; the outlet of the end A two-position three-way electromagnetic valve 4 is connected with the inlet of the motor cooling chamber 6; the outlet of the motor cooling chamber 6 is connected with the inlet of the B-end two-position three-way electromagnetic valve 5, one outlet of the B-end two-position three-way electromagnetic valve 5 is connected with one end of the warm air flow passage 18, and the other outlet of the B-end two-position three-way electromagnetic valve 5 is connected with the inlet of the radiating water tank through the cooling liquid cooling flow passage 2; a wind pressure sensor 7 for detecting a wind pressure signal is arranged in an air cooling flow passage between the blower 11 and the A end two-position three-way electromagnetic valve 4, and a water flow sensor 8 is arranged in a cooling liquid cooling flow passage between the inlet of the radiating water tank 1 and the outlet of the B end two-position three-way electromagnetic valve 5;
the multi-position three-way electromagnetic valve 12 is provided with an inlet, two outlets, a left valve body and a right valve body, the sizes of the left valve body and the right valve body are the same, the inlet diameter of the multi-position three-way electromagnetic valve 12 is twice as large as the widths of the left valve body and the right valve body, the outlet diameter of the multi-position three-way electromagnetic valve 12 is matched with the widths of the left valve body and the right valve body, the left valve body and the right valve body are sequentially connected through valve cores, the inlet of the multi-position three-way electromagnetic valve is connected with the other end of the warm air flow channel 18, one outlet of the multi-position three-way electromagnetic valve 12 is communicated with a cockpit through a cockpit pipeline 14, and the other outlet of the multi-position three-way electromagnetic valve 12 is communicated with the outside atmosphere through an atmosphere pipeline 15; the position of the warm air flow passage 18 and the cockpit pipeline 14 which is just completely closed is the initial position of the multi-position three-way electromagnetic valve 12; the warm air flow passage 18 and the air passage pipeline 15 are just completely closed, the position of the warm air flow passage 18 just completely communicated with the cabin passage pipeline 14 is the farthest position of the multi-position three-way electromagnetic valve 12, and the maximum input current at the farthest position is M; the multi-position three-way solenoid valve 12 can be in any one of the positions between the initial position and the farthest position; the multi-position three-way electromagnetic valve 12 has a plurality of working positions, the electronic control unit ECU9 controls the magnitude of the fed current to control the moving position of the left valve body, so that the left valve body has the function of controlling the flow direction and the flow rate of high-temperature gas, and further, the temperature in the vehicle is better and faster controlled, the right valve body has the stabilizing function, and the left valve body is ensured to better realize the function of controlling the flow direction and the flow rate of the gas;
the in-vehicle console 16 is installed on an in-vehicle operation interface of the electric automobile and is used for controlling the switching of two cooling media of the cooling system and the setting of the temperature in the automobile; an in-vehicle temperature sensor 13 is arranged on the electric automobile, and the in-vehicle temperature sensor 13 is used for detecting the in-vehicle temperature;
the electronic control unit ECU9 is arranged in the electric automobile and is simultaneously connected with a multi-position three-way electromagnetic valve 12, an A-end two-position three-way electromagnetic valve 4, a B-end two-position three-way electromagnetic valve 5, an electromagnetic clutch for controlling the work of a blower 11, an electromagnetic clutch for controlling the work of a circulating water pump 3, a wind pressure sensor 7, a water flow sensor 8, an in-automobile console 16 and an in-automobile temperature sensor 13, so as to control the work of the electromagnetic valve, the blower, the circulating water pump and other components;
the air cooling flow passage 17, the cooling liquid cooling flow passage 2, the warm air flow passage 18, the cab-through pipeline 14 and the air-through pipeline 15 are all made of silicone tubes, so that the connection effect is achieved;
the radiating water tank 1 is arranged at the front part of the electric vehicle and is used for cooling the cooling liquid;
the circulating water pump 3 is driven by a driving motor, and the driving motor and the circulating water pump 3 are controlled by an electromagnetic clutch and are used for circulating and supplying pressure of cooling liquid; when the electromagnetic clutch is powered off, the circulating water pump works;
the water flow sensor 7 is arranged in a cooling flow passage of the cooling liquid near the other outlet of the B-end two-position three-way electromagnetic valve 5 and is arranged at the bottom of the horizontal pipeline, and can detect whether water flow exists or not;
the air blower 11 is arranged behind the air filter 10 and driven by a driving motor, the driving motor and the air blower 11 are controlled by an electromagnetic clutch, the electromagnetic clutch is separated when the power is off, the air blower 11 does not work, and the air blower 11 is used for improving the air inlet pressure and the air inlet flow;
the in-vehicle console 16 is used for controlling the starting and closing of the cooling system and setting the temperature in the vehicle;
the in-vehicle temperature sensor 13 is used for detecting the temperature in the vehicle, and the electronic control unit ECU9 controls the operation of the multi-position three-way electromagnetic valve 12 according to the temperature detected by the in-vehicle temperature sensor, so that the set temperature in the vehicle is reached.
The system has two cooling modes, namely cooling liquid cooling and air cooling, two mediums share a motor cooling chamber, the cooling liquid is used for cooling in seasons with relatively high temperatures in spring, summer and autumn, a circulating water pump 3 works under the working cycle, a blower 11 does not work, an A end two-position three-way electromagnetic valve 4 and a B end two-position three-way electromagnetic valve 5 are powered off, and the working flow paths are as follows: the cooling water tank 1, the circulating water pump 3, the A end two-position three-way electromagnetic valve 4, the motor cooling chamber 6, the B end two-position three-way electromagnetic valve 5 and the cooling water tank 1; the air temperature is lower in winter and uses air cooling, the air blower 11 works under the working circulation, the circulating water pump 3 is closed, the A end two-position three-way electromagnetic valve 4 and the B end two-position three-way electromagnetic valve are all electrified, at the moment, the air with the temperature rising due to the heat of the motor is taken away can be led to the atmosphere and also can be led to the interior of the vehicle to provide warm air, and when the warm air is not opened, the working flow path is as follows: the air cleaner 10, the blower 11, the A end two-position three-way electromagnetic valve 4, the motor cooling chamber 6, the B end two-position three-way electromagnetic valve 5, the warm air flow passage 18, the air pipe 15 and the atmosphere; when the warm air is started, the working flow path is as follows: the air cleaner 10, the blower 11, the A-end two-position three-way electromagnetic valve 4, the motor cooling chamber 6, the B-end two-position three-way electromagnetic valve 5, the warm air flow passage 18, the cabin ventilation pipe 14 (in the vehicle) or the air ventilation pipe 15 (atmosphere).
The working process of the system of the invention is as follows: when cooling is switched to air cooling by cooling liquid, the circulating water pump 3 stops working, the air blower 11 works, after the air pressure sensor 7 detects the air pressure increased by the working of the air blower, the air pressure sensor 7 transmits an air pressure signal to the electronic control unit ECU9, the electronic control unit ECU9 further controls the power on of the A-end two-position three-way electromagnetic valve 4, the air cooling flow channel 17 is communicated with the motor cooling chamber 6, the cooling liquid of the motor cooling chamber 6 flows back to the radiating water tank 1 from the cooling liquid cooling flow channel under the action of the air pressure, when the water flow sensor 8 detects that no water passes through the bottom of the cooling liquid cooling flow channel, the water flow sensor 8 supplies a water-free signal to the electronic control unit ECU9, the electronic control unit ECU9 further controls the power on of the B-end two-position three-way electromagnetic valve 5, the B-end two-position three-way electromagnetic valve 5 enables the motor cooling chamber 6 to be communicated with the warm air flow channel 18, and redundant air entering the cooling liquid circulation can be dispersed from the top of the radiating water tank 1;
when the air cooling mode is switched to cooling liquid cooling, the air blower 11 stops working, the circulating water pump 3 starts working, at the moment, the electronic control unit ECU9 controls the A end two-position three-way electromagnetic valve 4 and the B end two-position three-way electromagnetic valve 5 to be powered off, so that a cooling liquid cooling flow passage is communicated with the motor cooling chamber 6, the air cooling flow passage 17 and the warm air flow passage 18 are closed, and the system normally enters the cooling liquid cooling mode.
When the warm air is not opened under the air cooling work, the multi-position three-way electromagnetic valve 12 is powered off, the inlet of the multi-position three-way electromagnetic valve 12 and the air pipeline 15 are kept normally open, and high-temperature gas is directly discharged into the atmosphere;
when the warm air is started, the electronic control unit ECU9 supplies current to the multi-position three-way electromagnetic valve 12 to enable the ventilation cabin pipeline 14 to be gradually communicated with the warm air flow channel 18, when the warm air is started, the cross-sectional area of the ventilation cabin pipeline 14 is smaller due to the fact that the current is smaller, an in-car temperature is set by an in-car operator through an in-car control console, after the electronic control unit ECU9 receives a temperature instruction, closed loop control is formed by the in-car temperature sensor 8, the electronic control unit ECU9 increases the input current to the multi-position three-way electromagnetic valve 12 to increase the ventilation area of the warm air flow channel 18 and the ventilation cabin pipeline 14, high-temperature gas is reduced to be discharged to the atmosphere, the maximum input current M is set, when the maximum current is supplied, the right valve body of the multi-position three-way electromagnetic valve 12 is operated to the farthest position, namely, the warm air flow channel 18 and the ventilation cabin pipeline 15 are just completely closed, and the warm air flow channel 18 and the ventilation cabin pipeline 14 are just completely communicated; if the temperature in the vehicle is higher than the set temperature, the electronic control unit ECU9 reduces the input current to the multi-position three-way electromagnetic valve 12, so that the valve core of the multi-position three-way electromagnetic valve 12 moves back, the through-flow cross-section area of the warm air flow channel 18 and the through-cockpit pipeline 14 is reduced, the warm air flow channel 18 and the through-atmosphere pipeline 15 are opened, part of high-temperature gas flows to the atmosphere, the magnitude of the input current is continuously changed, the flow direction and the flow rate of the high-temperature gas are changed, and the temperature in the vehicle is indirectly controlled; the input current X of the electronic control unit ECU9 is changed between 0 and M, the opening degree of the through flow section is used for controlling the flow, and the flow is used for indirectly controlling the temperature in the vehicle so as to realize heating in the vehicle;
when the warm air is not needed, the warm air is closed, the electronic control unit ECU9 cuts off the power supply to the multi-position three-way electromagnetic valve 12, the valve core returns to the initial position, the warm air flow passage 18 is completely communicated with the air ventilation pipeline 15, the warm air flow passage 18 is closed with the cab ventilation pipeline 14, and all high-temperature gas flows to the atmosphere through the air ventilation pipeline.
When the air temperature is relatively high in spring, summer and autumn, cooling liquid is adopted for cooling, the cooling liquid is supplied by the circulating water pump 3 and is cooled by the radiating water tank 1, at the moment, the two-position three-way electromagnetic valve 4 at the end A and the two-position three-way electromagnetic valve 5 at the end B are controlled by the electronic control unit ECU9 to be powered off, and the cooling liquid works in a circulating mode in a specified loop;
when the temperature of air is lower in winter, an air cooling mode is adopted, after the blower 11 is started, the wind pressure of the air cooling flow channel 17 is increased, the wind pressure sensor 7 receives a signal and then transmits the signal to the electronic control unit ECU9, and then the electronic control unit ECU9 controls the power on of the A-end two-position three-way electromagnetic valve 4, so that the air cooling flow channel 17 is communicated with the motor cooling chamber 6, the cooling liquid cooling flow channel is closed, the blower 11 circularly utilizes the water pressure of the motor cooling chamber 6 to the radiating water tank 1 by virtue of wind force, when the water flow sensor 8 at the bottom of the cooling liquid cooling flow channel detects no water flow, namely, most of cooling liquid is pressed to the radiating water tank 1, the water flow sensor 8 transmits the signal to the electronic control unit ECU9, the electronic control unit ECU9 controls the power on of the B-end two-position three-way electromagnetic valve 5, the B-end two-position three-way electromagnetic valve 5 closes the cooling liquid cooling flow channel, and the motor cooling chamber 6 is communicated with the warm air flow channel 18, and redundant gas flowing to the radiating water tank is discharged from the top of the radiating water tank 1 along with the cooling liquid flow.
As can be seen from fig. 3 (a) -3 (c), the spool of the multi-position three-way electromagnetic valve 12 has two valve bodies, the left valve body plays a role in connecting and closing the warm air flow channel 18 with the two outlets and controlling the cross-sectional area of the connection, the right valve body plays a role in stabilizing, the left valve body is ensured not to vibrate and deflect stably in the working process, the diameter of the inlet is twice as wide as the width of the two valve bodies, so that the left valve body plays a role in changing the airflow direction and the flow rate, and the sizes of the left valve body and the right valve body are the same. Fig. 3 (a), 3 (b) and 3 (c) show the initial position, the intermediate position and the farthest position of the spool of the multi-position three-way electromagnetic valve, respectively.
If warm air is needed in the vehicle, the electronic control unit ECU9 supplies power to the multi-position three-way electromagnetic valve 12, the initial current is smaller, the initial current is set to be X, X is between 0 and M, M is the maximum current input to the multi-position three-way electromagnetic valve 12, the currents with different magnitudes determine the connection cross-sectional areas of the warm air flow channel 18 and the through cockpit pipeline 14, the magnitude of the flow is controlled by the electronic control unit ECU9, the magnitude of the current is controlled by the temperature of the vehicle needed to be set by the person in the vehicle after the warm air is started, the signal is stored in the electronic control unit ECU9, the electronic control unit ECU9 performs adjustment control according to the temperature signal in the vehicle, when the temperature in the vehicle is lower than the set temperature, the electronic control unit ECU9 gradually increases the input current for powering off the multi-position three-way electromagnetic valve 12, the through-flow cross-sectional area of the warm air flow channel 18 and the through-cockpit pipeline 14 is continuously increased, the loss of high-temperature gas to the atmosphere is reduced until the valve core moves to the farthest position, namely, the valve body just closes the warm air flow channel 18 and the through-atmosphere pipeline 15, all the high-temperature gas flows into the vehicle to enable the vehicle to reach the set temperature, if the vehicle temperature is higher than the set temperature, the electronic control unit ECU9 reduces the input current to the multi-position three-way electromagnetic valve 12, the valve core moves backwards, the through-flow cross-sectional area of the warm air flow channel 18 and the through-cockpit pipeline 14 is reduced, the warm air flow channel 18 and the through-atmosphere pipeline 15 are opened, part of the high-temperature gas flows to the atmosphere, and the flow direction and the flow of the high-temperature gas are continuously changed to indirectly control the temperature in the vehicle.
When the warm air is not needed, the warm air is closed, the electronic control unit ECU9 cuts off the power supply to the multi-position three-way electromagnetic valve 12, the valve core returns to the initial position, the warm air flow passage 18 is completely communicated with the air ventilation pipeline 15, the warm air flow passage 18 is closed with the cab ventilation pipeline 14, and all high-temperature gas flows to the atmosphere through the air ventilation pipeline 15.
As can be seen from fig. 4 (a) and 4 (b), the a-end two-position three-way electromagnetic valve 4 has two inlets and one outlet, the two inlets are respectively connected with the cooling liquid cooling flow passage 2 and the air cooling flow passage 17, the outlet is connected with the motor cooling chamber 6, when the a-end two-position three-way electromagnetic valve is powered off, the outlet is communicated with the cooling liquid cooling flow passage 2, and when the a-end two-position three-way electromagnetic valve is powered on 4, the outlet is communicated with the air cooling flow passage 17. As can be seen from fig. 4 (c) and fig. 4 (d), the B-end two-position three-way electromagnetic valve 5 has two outlets and one inlet, the two outlets are respectively connected with the warm air flow channel 18 and the cooling liquid cooling flow channel 2, the inlet is connected with the motor cooling chamber 6, when the B-end two-position three-way electromagnetic valve 5 is powered off, the inlet is communicated with the cooling liquid cooling flow channel, and when the B-end two-position three-way electromagnetic valve 5 is powered on, the inlet is communicated with the warm air flow channel 18.
The invention is applicable to the prior art where it is not described.
Claims (4)
1. A dual-medium electric automobile motor cooling system capable of supplying warm air is characterized by comprising an A-end two-position three-way electromagnetic valve, a B-end two-position three-way electromagnetic valve, a wind pressure sensor, a water flow sensor, an electronic control unit ECU, an air filter, a multi-position three-way electromagnetic valve, an in-vehicle temperature sensor, a cabin pipeline, an atmosphere pipeline and an in-vehicle console;
one inlet of the A-end two-position three-way electromagnetic valve is connected with one end of a cooling liquid cooling flow passage, a radiating water tank is arranged on the cooling liquid cooling flow passage, and a circulating water pump is arranged on the cooling liquid cooling flow passage between an outlet of the radiating water tank and an inlet of the A-end two-position three-way electromagnetic valve; the other inlet of the two-position three-way electromagnetic valve at the end A is connected with a blower used in a motor cooling chamber through an air cooling flow passage, and an air filter is arranged in front of the inlet of the blower; the outlet of the end A two-position three-way electromagnetic valve is connected with the inlet of the motor cooling chamber; the outlet of the motor cooling chamber is connected with the inlet of the B-end two-position three-way electromagnetic valve, one outlet of the B-end two-position three-way electromagnetic valve is connected with one end of the warm air flow passage, and the other outlet of the B-end two-position three-way electromagnetic valve is connected with the inlet of the radiating water tank through the cooling liquid cooling flow passage; a wind pressure sensor for detecting a wind pressure signal is arranged in an air cooling flow passage between the blower and the A-end two-position three-way electromagnetic valve, and a water flow sensor is arranged in a cooling liquid cooling flow passage between the inlet of the radiating water tank and the outlet of the B-end two-position three-way electromagnetic valve;
the multi-position three-way electromagnetic valve is provided with an inlet, two outlets, a left valve body and a right valve body, the left valve body and the right valve body are sequentially connected through valve cores, the inlet of the multi-position three-way electromagnetic valve is connected with the other end of the warm air flow channel, one outlet of the multi-position three-way electromagnetic valve is communicated with the cockpit through a cockpit pipeline, and the other outlet of the multi-position three-way electromagnetic valve is communicated with the outside atmosphere through an atmosphere pipeline; the position where the warm air flow channel and the pipeline of the through cockpit are just completely closed is the initial position of the multi-position three-way electromagnetic valve; the warm air flow channel and the ventilation air pipeline are just completely closed, the position where the warm air flow channel and the ventilation cabin pipeline are just completely connected is the farthest position of the multi-position three-way electromagnetic valve, and the maximum input current at the farthest position is M; the multi-position three-way electromagnetic valve can be positioned at any position between an initial position and a farthest position;
the in-vehicle control console is used for controlling the starting and closing of the cooling system and setting the temperature in the vehicle and is arranged on an in-vehicle operation interface of the electric vehicle; an in-vehicle temperature sensor for detecting the temperature in the vehicle is arranged on the electric vehicle;
the electronic control unit ECU is arranged in the electric automobile and is simultaneously connected with a multi-position three-way electromagnetic valve, an A-end two-position three-way electromagnetic valve, a B-end two-position three-way electromagnetic valve, an electromagnetic clutch for controlling the work of a blower, an electromagnetic clutch for controlling the work of a circulating water pump, a wind pressure sensor, a water flow sensor, an in-automobile control console and an in-automobile temperature sensor, so that the work of each electromagnetic valve, the blower and the circulating water pump is controlled;
the water flow sensor is arranged in a cooling liquid cooling flow passage near the other outlet of the B-end two-position three-way electromagnetic valve and is arranged at the bottom of the horizontal pipeline;
the left valve body and the right valve body are the same in size, the inlet diameter of the multi-position three-way electromagnetic valve is twice the width of the left valve body and the right valve body, and the outlet diameter of the multi-position three-way electromagnetic valve is matched with the width of the left valve body and the right valve body.
2. The system of claim 1, wherein the air cooling channels, the cooling liquid cooling channels, the warm air channels, the cockpit pipeline and the atmosphere pipeline are all made of silicone tubes.
3. The dual-medium electric automobile motor cooling system for supplying warm air according to claim 1, wherein the working process of the system is as follows: when cooling is switched to air cooling by cooling liquid, the circulating water pump stops working, the air blower works, after the air pressure sensor detects the air pressure increased by the working of the air blower, the air pressure sensor transmits an air pressure signal to the electronic control unit ECU, the electronic control unit ECU further controls the power on of the end A two-position three-way electromagnetic valve so as to enable the air cooling flow channel to be communicated with the motor cooling chamber, the cooling liquid of the motor cooling chamber flows back to the heat dissipating water tank from the cooling liquid cooling flow channel under the action of the air pressure, when the water flow sensor detects that no water passes through the bottom of the cooling liquid cooling flow channel, the water flow sensor supplies a water-free signal to the electronic control unit ECU, the electronic control unit ECU further controls the power on of the end B two-position three-way electromagnetic valve, the end B two-position three-way electromagnetic valve enables the motor cooling chamber to be communicated with the warm air flow channel, and redundant gas entering the cooling liquid circulation can be dispersed from the top of the heat dissipating water tank;
when the cooling mode is switched to cooling liquid cooling, the air blower stops working, the circulating water pump starts working, at the moment, the electronic control unit ECU controls the power-off of the A-end two-position three-way electromagnetic valve and the B-end two-position three-way electromagnetic valve, so that the cooling liquid cooling flow passage is communicated with the motor cooling chamber, the air cooling flow passage and the warm air flow passage are closed, and the system normally enters the cooling liquid cooling mode.
4. The dual-medium electric automobile motor cooling system capable of supplying warm air according to claim 3, wherein when the warm air is not opened under the air cooling operation, the multi-position three-way electromagnetic valve is powered off, the inlet of the multi-position three-way electromagnetic valve and the air pipeline are kept normally open, and the high-temperature gas is directly discharged into the atmosphere;
when the warm air is started, the electronic control unit ECU supplies current to the multi-position three-way electromagnetic valve to enable the warm air flow channel to be gradually communicated with the warm air flow channel, an in-car operator sets in-car temperature through the in-car control console, closed loop control is formed between the in-car operator and the in-car temperature sensor after the electronic control unit ECU receives a temperature instruction, the electronic control unit ECU increases the input current to the multi-position three-way electromagnetic valve to increase the communication area between the warm air flow channel and the warm air flow channel, reduces high-temperature gas to be discharged to the atmosphere, sets the maximum input current M, and when the maximum current is supplied, the right valve body of the multi-position three-way electromagnetic valve is operated to the farthest position, namely the position where the warm air flow channel and the air flow channel are just completely closed, and the warm air flow channel are just completely communicated; if the temperature in the automobile is higher than the set temperature, the electronic control unit ECU reduces the input current to the multi-position three-way electromagnetic valve, so that the valve core of the multi-position three-way electromagnetic valve moves backwards, the through flow cross section area of the warm air flow channel and the through cab pipeline is reduced, the warm air flow channel and the through atmosphere pipeline are opened, part of high-temperature gas flows to the atmosphere, the magnitude of the input current is continuously changed, the flow direction and the flow rate of the high-temperature gas are changed, and the temperature in the automobile is indirectly controlled; the input current X of the electronic control unit ECU is changed between 0 and M, the opening degree of the through flow section is used for controlling the flow, and the flow is used for indirectly controlling the temperature in the vehicle so as to realize heating in the vehicle;
when the warm air is not needed, the warm air is closed, the electronic control unit ECU cuts off the power supply to the multi-position three-way electromagnetic valve, the valve core returns to the initial position, the warm air flow passage is completely communicated with the air ventilation pipeline, the warm air flow passage is closed with the air ventilation cabin pipeline, and all high-temperature gas flows to the atmosphere through the air ventilation pipeline.
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| CN201710944735.3A CN107696850B (en) | 2017-10-12 | 2017-10-12 | Dual-medium electric automobile motor cooling system capable of supplying warm air |
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| CN201710944735.3A CN107696850B (en) | 2017-10-12 | 2017-10-12 | Dual-medium electric automobile motor cooling system capable of supplying warm air |
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| CN107696850B true CN107696850B (en) | 2023-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002354608A (en) * | 2001-05-28 | 2002-12-06 | Honda Motor Co Ltd | Battery cooling device for electric automobile |
| CN102910067A (en) * | 2012-10-31 | 2013-02-06 | 中铁隧道股份有限公司 | Hydraulic cooling control method of hydraulic torque converter for tunnel construction internal combustion traction locomotive |
| CN203449959U (en) * | 2013-05-30 | 2014-02-26 | 天津清源电动车辆有限责任公司 | Air circulation temperature management system used for battery tank of electric automobile |
| CN105507999A (en) * | 2014-12-10 | 2016-04-20 | 王树卿 | Efficient energy-saving and emission-reduction sub-system of automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207225067U (en) * | 2017-10-12 | 2018-04-13 | 河北工业大学 | It is a kind of can providing warm air double medium motor in electric automobile cooling systems |
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2017
- 2017-10-12 CN CN201710944735.3A patent/CN107696850B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002354608A (en) * | 2001-05-28 | 2002-12-06 | Honda Motor Co Ltd | Battery cooling device for electric automobile |
| CN102910067A (en) * | 2012-10-31 | 2013-02-06 | 中铁隧道股份有限公司 | Hydraulic cooling control method of hydraulic torque converter for tunnel construction internal combustion traction locomotive |
| CN203449959U (en) * | 2013-05-30 | 2014-02-26 | 天津清源电动车辆有限责任公司 | Air circulation temperature management system used for battery tank of electric automobile |
| CN105507999A (en) * | 2014-12-10 | 2016-04-20 | 王树卿 | Efficient energy-saving and emission-reduction sub-system of automobile |
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