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CN-121977301-A - Heating control method and air conditioning system thereof

CN121977301ACN 121977301 ACN121977301 ACN 121977301ACN-121977301-A

Abstract

According to various embodiments of the present invention, there is provided a heating control method of an air conditioning system and an air conditioning system thereof, in operation of an electric vehicle air conditioning system including a main heating portion of a first refrigerant cycle and an auxiliary heating portion of a second refrigerant cycle, the first refrigerant or the second refrigerant including at least one of a natural-based refrigerant, a hydrofluorocarbon (Hydrofluorocarbon, HFC) -based refrigerant, a hydrofluoroolefin (Hydrofluoroolefin, HFO) -based refrigerant, a hydrochlorofluorocarbon (Hydrochlorofluorocarbon, HCFC) -based refrigerant, a hydrocarbon-based refrigerant other than a natural-based refrigerant, and a halon or perfluorocarbon (Perfluorocarbon, PFC) -based refrigerant.

Inventors

  • LI XIUZHEN
  • LU ZHIXING

Assignees

  • SK新技术株式会社
  • SK新能源株式会社

Dates

Publication Date
20260505
Application Date
20251024
Priority Date
20241025

Claims (15)

  1. 1. A heating control method of an air conditioning system, in the operation of an electric vehicle air conditioning system including a main heating portion of a first refrigerant cycle and an auxiliary heating portion of a second refrigerant cycle, The first refrigerant or the second refrigerant includes at least one of a natural refrigerant, a Hydrofluorocarbon (HFC) refrigerant, a Hydrofluoroolefin (HFO) refrigerant, a Hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant other than a natural refrigerant, and a halon or Perfluorocarbon (PFC) refrigerant.
  2. 2. The heating control method of an air conditioning system according to claim 1, wherein, The natural refrigerant comprises at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290).
  3. 3. The heating control method of an air conditioning system according to claim 1, wherein, The Hydrofluorocarbon (HFC) refrigerant comprises difluoromethane (R-32), 1-difluoroethane (R-152 a), pentafluoroethane (R-125), 1, 2-tetrafluoroethane (R-134 a), 1-trifluoroethane (R-143 a), trifluoromethane (R-23), and fluoroethane (R-161), 1,2, 3-heptafluoropropane (R-227 ea) 1,2, 3-hexafluoropropane (R-236 ea) 1,2, 3-hexafluoro propane (R-236 ea).
  4. 4. The heating control method of an air conditioning system according to claim 1, wherein, The Hydrofluoroolefin (HFO) refrigerant comprises 1, 2-trifluoroethylene (R-1123), 1-chloro-2, 3-tetrafluoropropene (R1224 yd (Z)) 2, 3-tetrafluoropropene (R-1234 yf), 1, 3-tetrafluoropropene (R-1234 ze) 1,2, 3-tetrafluoropropene (R-1234 ye), 3-trifluoropropene (R-1243 zf) at least one of 1, 1-difluoroethylene (R-1132 a) and 1,2, 3-pentafluoropropene (R-1225 ye).
  5. 5. The heating control method of an air conditioning system according to claim 1, wherein, The Hydrochlorofluorocarbon (HCFC) refrigerant comprises at least one of difluoromethane (R-22), chlorotetrafluoroethane (R-124) and 1-chloro-1, 1-difluoroethane (R-142 b).
  6. 6. The heating control method of an air conditioning system according to claim 1, wherein, The hydrocarbon refrigerant of the non-natural refrigerant comprises at least one of propylene (R-1270), isobutane (R-600 a), dimethyl ether, isopentane and pentane.
  7. 7. The heating control method of an air conditioning system according to claim 1, wherein, The halon or Perfluorocarbon (PFC) refrigerant contains at least one of trifluoroiodomethane (R-13I 1), octafluoropropane (R-218) and octafluorocyclobutane (RC 318).
  8. 8. The heating control method of an air conditioning system according to claim 1, comprising the steps of: Heating the second refrigerant by using heat generated by a battery of the electric vehicle when the battery is charged; Circulating the first refrigerant and the second refrigerant when determining an operation of a heating mode according to a user input after the electric vehicle is started, and Air heated with the first refrigerant is supplied to an interior of the electric vehicle or air heated with the second refrigerant is supplied to the interior based on a temperature of the first refrigerant.
  9. 9. The heating control method of an air conditioning system according to claim 8, wherein, In the step of circulating the first refrigerant and the second refrigerant, And heating the second refrigerant by using the heating electronic element when the temperature of the second refrigerant is lower than or equal to a preset first temperature.
  10. 10. The heating control method of an air conditioning system according to claim 8, wherein, In the step of supplying the heated air into the room, When the temperature of the first refrigerant is lower than or equal to the second temperature, supplying air passing through the heat exchanger of the auxiliary heating portion to the room, or When the temperature of the first refrigerant is higher than the second temperature, the operation of the auxiliary heating portion is stopped, and air passing through the heater core of the main heating portion is supplied into the room.
  11. 11. An air conditioning system for heating control, the air conditioning system being an air conditioning system of an electric vehicle including a main heating portion of a first refrigerant cycle and an auxiliary heating portion of a second refrigerant cycle, wherein, The main heating section includes: a compressor compressing the first refrigerant; a heater core for heat exchanging with the first refrigerant, and A first line configured to circulate the first refrigerant through the compressor and the heater core, The auxiliary heating section includes: A heating tank storing the second refrigerant; A pump that moves the second refrigerant; A heat exchanger for exchanging heat with the second refrigerant, and A second line configured to circulate the second refrigerant through the heating tank, the pump, and the heat exchanger, The first refrigerant or the second refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon refrigerant, a hydrofluoroolefin refrigerant, a hydrochlorofluorocarbon refrigerant, a hydrocarbon refrigerant other than a natural refrigerant, and a halon or perfluorocarbon refrigerant.
  12. 12. The air conditioning system for heating control according to claim 11, wherein, The natural refrigerant comprises at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170) and propane (R-290), The Hydrofluorocarbon (HFC) refrigerant comprises difluoromethane (R-32), 1-difluoroethane (R-152 a), pentafluoroethane (R-125), 1, 2-tetrafluoroethane (R-134 a), 1-trifluoroethane (R-143 a), trifluoromethane (R-23), and fluoroethane (R-161), 1,2, 3-heptafluoropropane (R-227 ea) 1,2, 3-hexafluoropropane (R-236 ea) 1,2, 3-hexafluoro propane (R-236 ea), The Hydrofluoroolefin (HFO) refrigerant comprises 1, 2-trifluoroethylene (R-1123), 1-chloro-2, 3-tetrafluoropropene (R1224 yd (Z)) 2, 3-tetrafluoropropene (R-1234 yf), 1, 3-tetrafluoropropene (R-1234 ze) 1,2, 3-tetrafluoropropene (R-1234 ye), 3-trifluoropropene (R-1243 zf) at least one of 1, 1-difluoroethylene (R-1132 a), 1,2, 3-pentafluoropropene (R-1225 ye), The Hydrochlorofluorocarbon (HCFC) refrigerant comprises at least one of difluoromethane (R-22), chlorotetrafluoroethane (R-124) and 1-chloro-1, 1-difluoroethane (R-142 b), The hydrocarbon refrigerant of the non-natural refrigerant comprises at least one of propylene (R-1270), isobutane (R-600 a), dimethyl ether, isopentane and pentane, The halon or Perfluorocarbon (PFC) refrigerant contains at least one of trifluoroiodomethane (R-13I 1), octafluoropropane (R-218) and octafluorocyclobutane (RC 318).
  13. 13. The air conditioning system for heating control according to claim 11, further comprising: a battery; A waste heat exchange part for heat transfer between the battery and the heating tank, and The apparatus includes a processing unit that heats the second refrigerant using heat generated from a battery of the electric vehicle when the battery is charged, circulates the first refrigerant and the second refrigerant when a heating mode operation is determined based on a user input after the electric vehicle is started, and supplies air heated using the first refrigerant into a room of the electric vehicle or supplies air heated using the second refrigerant into the room based on a temperature of the first refrigerant.
  14. 14. The air conditioning system for heating control according to claim 13, wherein, The processing portion heats the second refrigerant with the heating electronic component when the temperature of the second refrigerant is lower than or equal to a preset first temperature.
  15. 15. The air conditioning system for heating control according to claim 13, wherein, The processing portion supplies air passing through the heat exchanger of the auxiliary heating portion to the room when the temperature of the first refrigerant is lower than or equal to a second temperature, or When the temperature of the first refrigerant is higher than the second temperature, the processing portion stops the operation of the auxiliary heating portion and supplies air passing through the heater core of the main heating portion into the chamber.

Description

Heating control method and air conditioning system thereof Technical Field The disclosure relates to a heating control method of an electric automobile and an air conditioning system thereof. Background An automotive HVAC (heating ventilation, and air conditioning) system is configured to heat and cool air within a passenger compartment for passenger comfort. In addition, portions of the air conditioning system are configured to selectively vary the air supply. In addition, part of the air conditioning system is configured to suck in mixed air composed of outside air and inside air and, after conditioning the mixed air, to supply the conditioned mixed air into the passenger compartment. An air conditioning system for a vehicle includes a condenser and a heater core (heat core) provided in an air conditioning case. The air-conditioning case has an inlet (inlet) into which air flows and a plurality of outlets (outlets) from which air is discharged to the passenger compartment. The condenser may exchange heat with air sent from the cooling fan to allow the cooled air to flow into the passenger compartment when cooling for lowering the indoor temperature, and the heater core may exchange heat with air provided from the air-sending fan to allow the heated air to flow into the passenger compartment when heating for raising the indoor temperature. In an electric vehicle, since heating or cooling of an air conditioning system mostly depends on battery power, when heating or cooling is started in the electric vehicle, battery consumption increases drastically, and thus performance degradation or expected travel distance reduction of the electric vehicle may occur. Particularly, when the vehicle is started, in case of a large temperature difference from the target temperature, the heating or cooling system consumes more battery power for fast matching with the target temperature, resulting in an increase in initial battery consumption, shortening the travelable distance and accelerating the charging period, thereby causing inconvenience to the driver. Disclosure of Invention First, the technical problem to be solved The disclosure can provide a method for heating control based on heat generated during charging of an electric automobile and an air conditioning system thereof. The technical problems to be solved by the various embodiments are not limited to the above-mentioned problems, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art through the following description. (II) technical scheme According to one embodiment, a heating control method of an air conditioning system may be provided, in operation of an electric vehicle air conditioning system including a main heating portion of a first refrigerant cycle and an auxiliary heating portion of a second refrigerant cycle, the first refrigerant or the second refrigerant including at least one of a natural-based refrigerant, a Hydrofluorocarbon (HFC) -based refrigerant, a Hydrofluoroolefin (HFO) -based refrigerant, a Hydrochlorofluorocarbon (HCFC) -based refrigerant, a hydrocarbon-based refrigerant other than the natural-based refrigerant, and a halon or Perfluorocarbon (PFC) -based refrigerant. Here, the natural refrigerant may include at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290). In this context, the Hydrofluorocarbon (HFC) refrigerant may contain difluoromethane (R-32), 1-difluoroethane (R-152 a), pentafluoroethane (R-125), 1, 2-tetrafluoroethane (R-134 a), 1-trifluoroethane (R-143 a), trifluoromethane (R-23) fluoroethane (R-161), 1,2, 3-heptafluoropropane (R-227 ea), 1,2, 3-hexafluoropropane (R-236 ea), and at least one of 1, 3-hexafluoropropane (R-236 fa), 1, 3-pentafluoropropane (R-245 fa), and 1, 3-pentafluorobutane (R-365 mfc). In this context, the Hydrofluoroolefin (HFO) refrigerant may comprise 1, 2-trifluoroethylene (R-1123), 1-chloro-2, 3-tetrafluoropropene (R1224 yd (Z)), 2, 3-tetrafluoropropene (R-1234 yf) 1, 3-tetrafluoropropene (R-1234 ze), 1,2, 3-tetrafluoropropene (R-1234 ye), 3-trifluoropropene (R-1243 zf) at least one of 1, 1-difluoroethylene (R-1132 a) and 1,2, 3-pentafluoropropene (R-1225 ye). Here, the Hydrochlorofluorocarbon (HCFC) based refrigerant may contain at least one of difluoromethane (R-22), chlorotetrafluoroethane (R-124), and 1-chloro-1, 1-difluoroethane (R-142 b). Here, the hydrocarbon-based refrigerant of the non-natural-based refrigerant may include at least one of propylene (R-1270), isobutane (R-600 a), dimethyl ether, isopentane, and pentane. Here, the halon or Perfluorocarbon (PFC) based refrigerant may contain at least one of trifluoroiodomethane (R-13I 1), octafluoropropane (R-218), and octafluorocyclobutane (RC 318). Here, the heating control method of the air conditioning system may include the steps of heating the second refrigerant using heat generated at a battery of the electric vehicle when the batter