CN112158048B - Gas heating control system of electric automobile and control method thereof - Google Patents
Gas heating control system of electric automobile and control method thereof Download PDFInfo
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- CN112158048B CN112158048B CN202011050395.8A CN202011050395A CN112158048B CN 112158048 B CN112158048 B CN 112158048B CN 202011050395 A CN202011050395 A CN 202011050395A CN 112158048 B CN112158048 B CN 112158048B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000002485 combustion reaction Methods 0.000 claims abstract description 33
- 239000000498 cooling water Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 24
- 238000004378 air conditioning Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 59
- 239000002737 fuel gas Substances 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
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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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/0065—Control members, e.g. levers or knobs
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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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00792—Arrangement of detectors
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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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
- B60H1/2212—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners arrangements of burners for heating air
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a gas heating control system of an electric automobile, which comprises a gas heater, wherein the gas heater comprises a combustion chamber and a hot water core body which exchanges heat with the combustion chamber, the gas heater also comprises a warm air core body which exchanges heat with the combustion chamber, the warm air core body is connected in series in an air inlet loop of a passenger compartment, the hot water core body is connected in series in a hot water circulation loop, the hot water circulation loop exchanges heat with the air inlet loop of the passenger compartment, the air inlet end of the combustion chamber is respectively connected with a gas inlet pipeline and an air inlet pipeline, and the hot water circulation loop is connected in series and parallel with a battery cooling water loop through a four-way reversing valve. The invention also provides a control method of the gas heating control system of the electric automobile, which comprises a rapid heating mode and a battery heating mode. The invention can realize instant heating and rapid heating, and improves the energy utilization rate of the system.
Description
Technical Field
The invention relates to the technical field of electric automobile heat management, in particular to a gas heating control system of an electric automobile and a control method thereof.
Background
With the technical development of the pure electric vehicle, endurance anxiety is improved to a certain extent, but the pure electric vehicle needs to be preheated to consume electric energy when being charged in a cold region in winter, and particularly a cabin air-conditioning heating needs to consume a large amount of electric energy, so that the winter endurance mileage of the pure electric vehicle is obviously reduced.
Chinese patent CN101823416A discloses a gas heating system for an electric vehicle, which uses a gas heater to heat hot water, exchanges heat between the hot water and air in a passenger compartment to realize heating, and controls the opening of a gas valve by monitoring the temperature of the hot water, thereby controlling the power of the gas heater and the temperature of the hot water.
The above system has the following problems: 1. instant heating on and off cannot be achieved. When the temperature is very low in winter, the passenger cabin needs to be rapidly heated, cold water in a liquid storage tank in the system needs to be heated by a gas heater firstly, and then is subjected to secondary heat exchange with air in the passenger cabin through a separate heat exchanger, so that the heat exchange efficiency in the whole process is low, and the time for heating the air in the passenger cabin to the set temperature is long. 2. The whole system has low energy utilization rate. Although the gas heating system replaces PTC electric heating to heat the passenger compartment, when the power battery is charged or discharged at low temperature in winter, the cooling liquid of the power battery needs to be heated to a proper range, so that heat needs to be provided for the cooling liquid of the power battery. 3. The passenger compartment temperature cannot be accurately controlled. In the system, the temperature of heated hot water is kept constant by controlling the power of the gas heater, and the initial temperature of the passenger compartment is changed along with the ambient temperature, so that the temperature of the passenger compartment after being heated cannot be accurately controlled.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method.
In order to achieve the above object, the present invention provides a gas heating control system for an electric vehicle, including a gas heater, where the gas heater includes a combustion chamber and a hot water core body exchanging heat with the combustion chamber, and is characterized in that: the gas heater also comprises a warm air core body which exchanges heat with the combustion chamber, the warm air core body is connected in series in the passenger compartment air inlet loop, the hot water core body is connected in series in the hot water circulation loop, the hot water circulation loop exchanges heat with the passenger compartment air inlet loop, the air inlet end of the combustion chamber is respectively connected with the gas inlet pipeline and the air inlet pipeline, and the hot water circulation loop is connected in series and in parallel with the battery cooling water loop through the four-way reversing valve.
Furthermore, the passenger compartment air inlet loop comprises an air blower, an air outlet of the air blower is connected with an air inlet of the air-liquid heat exchanger, an air outlet of the air-liquid heat exchanger is respectively connected with one ends of the first air inlet valve and the second air inlet valve, the other end of the first air inlet valve is connected to an air inlet of the warm air core, and the air outlet of the warm air core and the other end of the second air inlet valve are connected with an air outlet of the passenger compartment air inlet loop.
Furthermore, the hot water circulation loop comprises a liquid channel of the gas-liquid heat exchanger, a four-way reversing valve, an expansion water tank and a water pump which are sequentially connected with the hot water core body in series.
Further, the battery cooling water loop comprises a power battery, a battery cooling water pump and a four-way reversing valve, wherein the battery cooling water pump and the four-way reversing valve are connected with the power battery in series.
Further, the four-way reversing valve 12 is a two-position four-way reversing battery valve, and includes a first inlet 121 connected to the liquid passage of the gas-liquid heat exchanger 11, a first outlet 122 connected to the water inlet of the expansion water tank 9, a second inlet 123 connected to the battery cooling water pump 14, and a second outlet 124 connected to the power battery 13.
Further, the gas inlet pipeline comprises a gas proportional valve and a gas bottle which are connected with the gas inlet end of the combustion chamber in series; and the air inlet pipeline is connected with an air pump.
The signal output end of the vehicle control unit is respectively connected with the gas heater, the gas proportional valve, the air pump, the air blower, the first air inlet valve, the second air inlet valve, the water pump, the four-way reversing valve and the battery cooling water pump.
The invention also provides a control method of the gas heating control system for the electric automobile, which is characterized by comprising the following steps: the system comprises a rapid heating mode, wherein when the difference between the set temperature of a passenger compartment and the temperature of the passenger compartment is greater than a first set threshold value or the difference between a water temperature sensor and the ambient temperature is less than a second set threshold value, a first air inlet valve, a gas heater, a blower, a gas inlet pipeline, an air inlet pipeline and a hot water circulation loop are opened, and a second air inlet valve is closed.
The invention also provides a control method based on the gas heating control system of the electric automobile, which is characterized by comprising the following steps: when the temperature of the power battery is lower than the lower limit value of the temperature of the battery, the hot water circulation loop is connected with the battery cooling water loop in series, and the fuel gas heater, the fuel gas inlet pipeline, the air inlet pipeline, the hot water circulation loop and the battery cooling water loop are started.
The invention has the beneficial effects that:
1. realize instant heating and rapid heating. The passenger cabin air inlet channel is connected in series with a warm air core body which exchanges heat with the combustion chamber, and when the difference value between the temperature of the passenger cabin and the ambient temperature is large, the air in the passenger cabin can be directly and rapidly heated by the combustion chamber, so that the heating system can be heated immediately.
2. The system has high energy utilization rate. When the temperature of the power battery is lower, the waste heat generated after the air in the passenger compartment is heated in the hot water circulation loop is utilized to heat the power battery, so that the energy utilization rate is improved.
3. The passenger compartment temperature is precisely controlled. The driver inputs the set temperature of the passenger compartment through the temperature control panel, obtains the ambient temperature, the temperature of the passenger compartment, the temperature of hot water and the temperature of the combustion chamber, and then controls the opening of the gas proportional valve, the air inlet quantity of the air pump and the air inlet quantity of the blower to enable the temperature of the passenger compartment to reach the set temperature of the passenger compartment, so that accurate control is realized.
Drawings
Fig. 1 is a schematic structural diagram of a gas heating control system for an electric vehicle according to the present invention.
The components in the figures are numbered as follows: the system comprises a gas heater 1, a combustion chamber 101, a hot water core 102, a warm air core 103, a gas bottle 2, a gas proportional valve 3, an air pump 4, a blower 5, a first air inlet valve 6, a second air inlet valve 7, an expansion water tank 9, a water pump 10, a gas-liquid heat exchanger 11, a four-way reversing valve 12, a first inlet 121, a first outlet 122, a second inlet 123, a second outlet 124, a power battery 13, a battery cooling water pump 14, a whole vehicle controller 15, a temperature control panel 16, a set temperature button 161, a set air speed button 162, a gas bottle pressure sensor 17, an ambient temperature sensor 18, a passenger compartment temperature sensor 19, a water temperature sensor 20, a combustion chamber temperature sensor 21 and a battery temperature sensor 22.
Detailed Description
The following detailed description is provided to further explain the claimed embodiments of the present invention in order to make it clear for those skilled in the art to understand the claims. The scope of the invention is not limited to the following specific examples. It is intended that the scope of the invention be determined by those skilled in the art from the following detailed description, which includes claims that are directed to this invention.
As shown in fig. 1, a gas heating control system for an electric vehicle, the system is used for an electric vehicle using a power battery as a power source for vehicle running, and using gas as an auxiliary heating energy source, and includes a gas heater 1, the gas heater 1 includes a combustion chamber 101 and a hot water core 102 exchanging heat with the combustion chamber 101, the gas heater 1 further includes a hot air core 103 exchanging heat with the combustion chamber 101, the hot air core 103 is connected in series in an air intake loop of a passenger compartment, the hot water core 102 is connected in series in a hot water circulation loop, the hot water circulation loop exchanges heat with the air intake loop of the passenger compartment, the air intake end of the combustion chamber 101 is respectively connected with a gas intake pipeline and an air intake pipeline, and the hot water circulation loop is connected in series and parallel with a battery cooling water loop through a four-way reversing valve 12. Therefore, when the temperature of the battery cooling water loop is lower, the waste heat generated after the air in the passenger compartment is heated in the hot water circulation loop is utilized to heat the power battery, and the energy utilization rate is improved.
In this embodiment, the passenger compartment air inlet loop includes an air blower 5, an air outlet of the air blower 5 is connected to an air inlet of an air-liquid heat exchanger 11, an air outlet of the air-liquid heat exchanger 11 is connected to one ends of a first air inlet valve 6 and a second air inlet valve 7, respectively, the other end of the first air inlet valve 6 is connected to an air inlet of the warm air core 103, and the air outlet of the warm air core 103 and the other end of the second air inlet valve 7 are connected to an air outlet of the passenger compartment air inlet loop. Therefore, when the difference value between the temperature of the passenger compartment and the ambient temperature is large, the air in the passenger compartment can be directly and quickly heated by the combustion chamber, and the heating system can be heated immediately.
In this embodiment, the four-way reversing valve 12 is a two-position four-way reversing battery valve, and includes a first inlet 121 connected to the liquid passage of the gas-liquid heat exchanger 11, a first outlet 122 connected to the water inlet of the expansion water tank 9, a second inlet 123 connected to the battery cooling water pump 14, and a second outlet 124 connected to the power battery 13.
In this embodiment, the hot water circulation loop includes a liquid channel of the gas-liquid heat exchanger 11, a first water inlet 121, a first water outlet 122, an expansion water tank 9, and a water pump 10, which are connected in series with the hot water core 102. In the gas-liquid heat exchanger, the hot water heated by the hot water core transfers heat to the air in the passenger compartment to realize primary heating.
In this embodiment, the battery cooling water loop includes the power battery 13, and the battery cooling water pump 14 and the second water inlet 123 and the second water outlet 124 connected in series with the power battery.
In the embodiment, the gas inlet pipeline comprises a gas proportional valve 3 and a gas bottle 2 which are connected with the gas inlet end of the combustion chamber 101 in series, and the opening degree of the gas proportional valve controls the gas inlet flow of gas; the air inlet pipeline is connected with an air pump 4 and provides oxygen for the combustion of fuel gas.
In this embodiment, the vehicle control system further includes a vehicle control unit 15, signal input ends of the vehicle control unit 15 are respectively connected to a temperature control panel 16, a gas cylinder pressure sensor 17, an ambient temperature sensor 18, a passenger compartment temperature sensor 19, a water temperature sensor 20, a combustion chamber temperature sensor 21, and a battery temperature sensor 22, signal output ends of the vehicle control unit 15 are respectively connected to the gas heater 1, the gas proportional valve 3, the air pump 4, the blower 5, the first air intake valve 6, the second air intake valve 7, the water pump 10, the four-way reversing valve 12, and the battery cooling water pump 14, and the temperature control panel 16 includes a set temperature button 161 and a set air speed button 162. When the pressure of the gas cylinder 2 is lower than the warning value, the whole vehicle controller forcibly closes the whole heating control system.
The driver and the crew can select an automatic mode and a manual mode through the temperature control panel, wherein the driver and the crew can respectively input set temperature through the temperature button 161 and the set air speed button 162 in the automatic mode, the vehicle control unit obtains the ambient temperature, the temperature of the passenger compartment, the temperature of hot water and the temperature of the combustion chamber, and then controls the temperature and the temperature of hot water during combustion by controlling the opening degree of the gas proportional valve, the air inlet amount of the air pump and the air inlet amount of the blower, so that the temperature of the passenger compartment reaches the set temperature of the passenger compartment, and accurate control is realized. When the difference between the set temperature of the passenger compartment and the temperature of the passenger compartment is larger, the opening degree of the gas proportional valve, the air inlet quantity of the air pump and the air inlet quantity of the blower are larger, so that the temperature of the combustion chamber and the temperature of hot water are increased, and the temperature of the passenger compartment is increased more quickly; along with the continuous rising of the temperature of the passenger compartment, the difference between the set temperature of the passenger compartment and the temperature of the passenger compartment is smaller and smaller, the opening degree of the gas proportional valve, the air inlet amount of the air pump and the air inlet amount of the blower are continuously reduced, so that the temperature of the combustion chamber and the temperature of hot water are reduced, the temperature of the passenger compartment rises slowly, and the heating comfort level is improved.
The manual mode is different from the automatic mode in that the driver inputs the set temperature and the set wind speed through the temperature button 161 and the set wind speed button 162, respectively, so that the air intake of the blower is also given, and the manual mode can meet the requirement of the heating speed of the driver.
The control process of the gas heating control system of the electric automobile comprises the following four modes:
1. in the rapid heating mode, when the difference between the temperature set in the passenger compartment and the temperature in the passenger compartment is greater than a first set threshold value or the difference between the temperature sensor and the ambient temperature is less than a second set threshold value, the first air inlet valve 6, the gas heater 1, the blower 5, the gas proportional valve 3, the air pump 4 and the water pump 10 are opened, and the second air inlet valve 7 is closed. At the moment, because the difference value between the temperature of the passenger compartment and the ambient temperature is large, the passenger compartment needs to be heated quickly, so that the temperature of the air in the passenger compartment is still insufficient after the air is heated for the first time in the gas-liquid heat exchanger, and the air in the passenger compartment needs to be heated directly through a warm air core body in a combustion chamber, so that the air in the passenger compartment is quickly increased, the temperature of the passenger compartment quickly reaches the set temperature of the passenger compartment, and the purposes of opening and heating immediately and heating quickly are achieved.
2. In the normal heating mode, when the difference between the set temperature of the passenger cabin and the temperature of the passenger cabin is smaller than or equal to a first set threshold, or the difference between the water temperature sensor and the ambient temperature is larger than or equal to a second set threshold, the second air inlet valve 7, the gas heater 1, the blower 5, the gas proportional valve 3, the air pump 4 and the water pump 10 are opened, and the first air inlet valve 6 is closed. At the moment, the difference value between the temperature of the passenger compartment and the ambient temperature is small, rapid heating is not needed, and the air in the passenger compartment can reach the set temperature of the passenger compartment only by being heated by hot water in the gas-liquid heat exchanger, so that excessive consumption of fuel gas is avoided, and fuel is saved.
3. In the battery heating mode, when the temperature of the power battery is lower than the lower limit value of the battery temperature, for example, under a low-temperature charging or low-temperature driving condition, the first water inlet 121 is connected with the second water outlet 124, the first water outlet 122 is connected with the second water inlet 123, the hot water circulation loop is connected in series with the battery cooling water loop, and the gas heater 1, the gas proportional valve 3, the air pump 4, the water pump 10 and the battery cooling water pump 14 are turned on. Therefore, the temperature of the power battery can be rapidly increased to a proper range by hot water in the hot water circulation loop, the temperature of the hot water can be further reduced after the hot water passes through the gas-liquid heat exchanger and the battery cooling water loop, the heat absorbed in the hot water core can be increased, the temperature of the waste heat of the flue gas heated by the combustion chamber can be reduced, and the energy utilization rate of the fuel gas is improved.
4. In the battery self-circulation mode, when the temperature of the power battery is greater than or equal to the lower limit value of the battery temperature, the power battery does not need to be heated additionally, the first water inlet 121 is connected with the first water outlet 122, the second water inlet 123 is connected with the second water outlet 124, the hot water circulation loop is connected with the battery cooling water loop in parallel, the gas heater 1, the gas proportional valve 3, the air pump 4, the water pump 10 and the battery cooling water pump 14 are started, and the two are operated independently.
In the control process, the quick heating mode, the conventional heating mode, the battery heating mode and the battery self-circulation mode are independently controlled, namely the control of the first air inlet valve and the second air inlet valve and the opening and closing state of the four-way reversing valve are independently controlled and do not influence each other. The entire heating control system is operated in one of the rapid heating mode and the conventional heating mode, and in one of the battery heating mode and the battery self-circulation mode.
Claims (6)
1. The utility model provides an electric automobile gas heating control system, includes gas heater (1), gas heater (1) include combustion chamber (101) and with hot water core (102) of combustion chamber (101) heat transfer, its characterized in that: the gas heater (1) further comprises a warm air core body (103) exchanging heat with the combustion chamber (101), the warm air core body (103) is connected in series in a passenger compartment air inlet loop, the hot water core body (102) is connected in series in a hot water circulation loop, the hot water circulation loop exchanges heat with the passenger compartment air inlet loop, the air inlet end of the combustion chamber (101) is respectively connected with a gas inlet pipeline and an air inlet pipeline, and the hot water circulation loop is connected in series and in parallel with a battery cooling water loop through a four-way reversing valve (12);
the passenger compartment air inlet loop comprises an air blower (5), an air outlet of the air blower (5) is connected with an air inlet of an air-liquid heat exchanger (11), an air outlet of the air-liquid heat exchanger (11) is respectively connected with one ends of a first air inlet valve (6) and a second air inlet valve (7), the other end of the first air inlet valve (6) is connected to an air inlet of a warm air core body (103), and an air outlet of the warm air core body (103) and the other end of the second air inlet valve (7) are connected with an air outlet of the passenger compartment air inlet loop;
the hot water circulation loop comprises a liquid channel of a gas-liquid heat exchanger (11), a four-way reversing valve (12), an expansion water tank (9) and a water pump (10) which are sequentially connected with a hot water core body (102) in series.
2. The gas heating control system for an electric vehicle according to claim 1, characterized in that: the battery cooling water loop comprises a power battery (13), a battery cooling water pump (14) and a four-way reversing valve (12), wherein the battery cooling water pump and the four-way reversing valve are connected with the power battery in series.
3. The gas heating control system for an electric vehicle according to claim 2, characterized in that: the four-way reversing valve (12) is a two-position four-way reversing battery valve and comprises a first inlet (121) connected with a liquid channel of the gas-liquid heat exchanger (11), a first outlet (122) connected with a water inlet of the expansion water tank (9), a second inlet (123) connected with the battery cooling water pump (14) and a second outlet (124) connected with the power battery (13).
4. The gas heating control system for an electric vehicle according to claim 3, characterized in that: the gas inlet pipeline comprises a gas proportional valve (3) and a gas bottle (2) which are connected with the gas inlet end of the combustion chamber (101) in series; the air inlet pipeline is connected with an air pump (4).
5. The gas heating control system for an electric vehicle according to claim 4, wherein: the vehicle-mounted air conditioning system is characterized by further comprising a vehicle control unit (15), wherein a signal input end of the vehicle control unit (15) is connected with a temperature control panel (16), an environment temperature sensor (18), a passenger compartment temperature sensor (19), a water temperature sensor (20) and a battery temperature sensor (22) respectively, and a signal output end of the vehicle control unit (15) is connected with a gas heater (1), a gas proportional valve (3), an air pump (4), an air blower (5), a first air inlet valve (6), a second air inlet valve (7), a water pump (10), a four-way reversing valve (12) and a battery cooling water pump (14) respectively.
6. The control method of the gas heating control system for the electric vehicle according to claim 5, characterized in that: the system comprises a rapid heating mode, wherein when the difference between the set temperature of a passenger cabin and the temperature of the passenger cabin is greater than a first set threshold value or the difference between a water temperature sensor and the ambient temperature is less than a second set threshold value, a first air inlet valve (6), a gas heater (1), a blower (5), a gas inlet pipeline, an air inlet pipeline and a hot water circulation loop are opened, and a second air inlet valve (7) is closed; and the system also comprises a conventional heating mode, and when the difference between the set temperature of the passenger cabin and the temperature of the passenger cabin is smaller than or equal to a first set threshold value, or the difference between the water temperature sensor and the ambient temperature is larger than or equal to a second set threshold value, the second air inlet valve (7), the gas heater (1), the blower (5), the gas proportional valve (3), the air pump (4) and the water pump (10) are opened, and the first air inlet valve (6) is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050395.8A CN112158048B (en) | 2020-09-29 | 2020-09-29 | Gas heating control system of electric automobile and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050395.8A CN112158048B (en) | 2020-09-29 | 2020-09-29 | Gas heating control system of electric automobile and control method thereof |
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| Publication Number | Publication Date |
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| CN112158048A CN112158048A (en) | 2021-01-01 |
| CN112158048B true CN112158048B (en) | 2022-04-15 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823416A (en) * | 2010-04-30 | 2010-09-08 | 奇瑞汽车股份有限公司 | Fuel gas heating system for electric automobile |
| CN103940092A (en) * | 2014-05-08 | 2014-07-23 | 佛山市顺德区奇林电气有限公司 | Combustion heating control device and method used for gas water heater |
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| CN101823416A (en) * | 2010-04-30 | 2010-09-08 | 奇瑞汽车股份有限公司 | Fuel gas heating system for electric automobile |
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