WO2022211342A1 - 열 관리 시스템, 이에 대한 제어 방법 및 이에 포함되는 압축기 - Google Patents
열 관리 시스템, 이에 대한 제어 방법 및 이에 포함되는 압축기 Download PDFInfo
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- WO2022211342A1 WO2022211342A1 PCT/KR2022/003942 KR2022003942W WO2022211342A1 WO 2022211342 A1 WO2022211342 A1 WO 2022211342A1 KR 2022003942 W KR2022003942 W KR 2022003942W WO 2022211342 A1 WO2022211342 A1 WO 2022211342A1
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- refrigerant
- compressor
- thermal management
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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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/3214—Control means therefor for improving the lubrication of a refrigerant compressor in a vehicle
-
- 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 devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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 devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
-
- 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 devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00985—Control systems or circuits characterised by display or indicating devices, e.g. voice simulators
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3225—Cooling devices using compression characterised by safety arrangements, e.g. compressor anti-seizure means or by signalling devices
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- 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 devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- 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 devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
- B60H2001/325—Cooling devices information from a variable is obtained related to pressure of the refrigerant at a compressing unit
-
- 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 devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
- B60H2001/3252—Cooling devices information from a variable is obtained related to pressure of the refrigerant at an evaporating unit
-
- 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 devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
- B60H2001/3257—Cooling devices information from a variable is obtained related to temperature of the refrigerant at a compressing unit
-
- 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 devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
- B60H2001/3263—Cooling devices information from a variable is obtained related to temperature of the refrigerant at an evaporating unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/05—Refrigerant levels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/04—Refrigerant level
Definitions
- the present invention relates to a thermal management system, a control method therefor, and a compressor included therein, and more particularly, it is possible to determine whether a refrigerant amount is in a low refrigerant state less than a reference refrigerant amount, and measures when it is determined that the low refrigerant state is It relates to a thermal management system capable of taking the following, a control method therefor, and a compressor included therein.
- a vehicle in general, includes a compressor for compressing a refrigerant for air conditioning and battery thermal management, a first heat exchanger for cooling the refrigerant compressed by the compressor, an expansion means for expanding the refrigerant cooled by the first heat exchanger, and the expansion and a thermal management system having a second heat exchanger for exchanging the refrigerant expanded by the means with the cooling water in the cooling water circuit having the battery heat exchanger.
- the present invention provides a thermal management system that can easily determine whether the refrigerant amount is in a low refrigerant state less than the reference refrigerant amount, and can prevent various problems by taking measures when the refrigerant is in a low refrigerant state, a control method therefor, and included therein It is an object of the present invention to provide a compressor that is
- the present invention provides a cooling water circuit having a circulating cooling water and a battery heat exchanger for exchanging the cooling water with a vehicle battery in order to achieve the above object;
- a compressor for compressing a refrigerant, a first heat exchanger for cooling the refrigerant compressed by the compressor, an expansion means for expanding the refrigerant cooled by the first heat exchanger, and heat exchange between the refrigerant expanded by the expansion means and the coolant a refrigerant circuit having a second heat exchanger; measuring means for measuring the pressure and temperature of the refrigerant; and determining whether the coolant circuit and the refrigerant circuit are operating in a battery thermal management mode in which the indoor cooling and heating of the vehicle are not operated, and the refrigerant pressure and temperature measured by the measuring means It provides a thermal management system comprising a; detects the degree of superheat or supercooling, and determines whether the refrigerant amount of the compressor is in a low refrigerant state less than the reference refrigerant amount.
- the control unit may be configured to determine whether the low-refrigerant state is present when the battery thermal management mode is operated in a condition in which indoor cooling and heating of the vehicle do not operate.
- the control unit may be configured to determine whether the low refrigerant state is present when a first reference time has elapsed after the start of the operation of the compressor.
- the control unit may be configured to detect the degree of superheat from the pressure and temperature of the refrigerant flowing into the compressor, and to determine that the superheat is in the low refrigerant state when the degree of superheat is equal to or greater than a first reference temperature.
- the control unit may be configured to detect the degree of subcooling from the pressure and temperature of the refrigerant flowing into the expansion means, and to determine that the degree of supercooling is in the low refrigerant state when the degree of subcooling is equal to or less than the second reference temperature and continues for more than a second reference time. have.
- the control unit may be configured to limit at least one of a maximum rotation speed and a rotation speed increase/decrease speed of the compressor when it is determined that the low refrigerant state is present.
- the control unit may be configured to generate an alarm when it is determined that the low refrigerant state is present.
- the present invention provides a thermal management system control method for controlling the thermal management system, comprising: a first determining step of determining whether the thermal management system is operating in the battery thermal management mode; a second determination step of determining whether a first reference time has elapsed after the start of the operation of the compressor; a third determination step in which the degree of superheating or subcooling is compared with a reference temperature; and a fourth determination step of determining whether the low refrigerant state is in the low refrigerant state based on the determination results of the first determination step, the second determination step, and the third determination step.
- the thermal management system In the third determining step, it is determined whether the degree of superheat detected from the pressure and temperature of the refrigerant flowing into the compressor is equal to or greater than a first reference temperature, and in the first determining step, the thermal management system operates in the battery thermal management mode When it is determined that the first reference time has elapsed after the start of the operation of the compressor in the second determination step, and it is determined in the third determination step that the degree of superheat is equal to or greater than the first reference temperature, the fourth In the determination step, it may be determined that the low refrigerant state is present.
- the degree of subcooling detected from the pressure and temperature of the refrigerant flowing into the expansion means in the third determination step is less than or equal to the second reference temperature, and whether the state in which the degree of subcooling is less than or equal to the second reference temperature continues for more than a second reference time is determined, and in the first determining step, it is determined that the thermal management system is operating in the battery thermal management mode, and in the second determining step, it is determined that the first reference time has elapsed after starting the operation of the compressor, and When it is determined in the third determination step that the state in which the degree of subcooling is equal to or less than the second reference temperature has continued for more than the second reference time, it may be determined in the fourth determination step as the low refrigerant state.
- the second determining step is executed, and in the second determining step, the first reference time after starting the operation of the compressor When it is determined that this has elapsed, the third determination step may be executed.
- the method may further include a compressor control step of limiting at least one of a maximum rotation speed of the compressor and a rotation speed increase/decrease speed when it is determined in the fourth determination step that the low refrigerant state is present.
- the method may further include an alarm step of generating an alarm when it is determined that the low refrigerant state is in the fourth determination step.
- the present invention a motor for generating power; a rotating shaft rotated by the motor; a orbiting scroll pivotally moved by the rotating shaft; and a fixed scroll forming a compression chamber together with the orbiting scroll, wherein the motor is included in the thermal management system.
- the thermal management system and the control method therefor are operated in a battery thermal management mode and the refrigerant pressure when the vehicle's indoor cooling and heating is not operated It is formed to determine whether the refrigerant amount is in a low refrigerant state that is less than the reference refrigerant amount through the degree of superheat or the degree of subcooling detected from the over temperature, and the compressor is formed as an electric compressor included in the thermal management system and controlled by the control method Accordingly, it can be easily determined whether the refrigerant amount is in a low refrigerant state, which is less than the standard refrigerant amount, and if it is in a low refrigerant state, measures are taken to cause various problems (increased discomfort due to failure to supply adequate air conditioning and heating to the passenger compartment, reduced dehumidification function, etc.) Difficulty in securing visibility due to insufficient cooling of the battery, increase in charging
- FIG. 1 is a schematic diagram illustrating a thermal management system according to an embodiment of the present invention
- Figure 2 is a flow chart showing the thermal management system control method of Figure 1;
- FIG. 3 is a diagram showing a p-h diagram of a refrigerant circuit in the thermal management system of FIG. 1;
- FIG. 4 is a chart showing a change in the degree of superheat according to the operation of the compressor when the amount of refrigerant is the reference amount of refrigerant in the thermal management system of FIG. 1;
- FIG. 5 is a diagram illustrating a change in the degree of superheat according to the operation of the compressor when the amount of refrigerant is less than the amount of reference refrigerant in the thermal management system of FIG. 1;
- Figure 6 is a chart comparing the superheat degree by refrigerant amount / outdoor temperature in the thermal management system of Figure 1;
- FIG. 7 is a schematic diagram illustrating a thermal management system according to another embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a method of controlling the thermal management system of FIG. 7 .
- FIG. 1 is a schematic diagram illustrating a thermal management system according to an embodiment of the present invention
- FIG. 2 is a flowchart illustrating the thermal management system control method of FIG. 1
- FIG. 3 is a refrigerant circuit in the thermal management system of FIG. It is a chart showing a p-h diagram
- FIG. 4 is a chart showing a change in the degree of superheat according to the operation of the compressor when the amount of refrigerant is the reference amount of refrigerant in the thermal management system of FIG. 1
- FIG. 5 is the amount of refrigerant in the thermal management system of FIG.
- the amount of refrigerant is less than the reference amount of refrigerant, it is a chart showing the change in the degree of superheat according to the operation of the compressor.
- a vehicle eg, an electric vehicle
- the thermal management system includes a refrigerant circuit and the refrigerant circuit and a coolant circuit thermally coupled to the battery.
- the refrigerant circuit comprises a compressor 100 for compressing a low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and a first for cooling and condensing the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 100 into a medium-temperature and high-pressure liquid refrigerant.
- a second heat exchanger 400 for heating and evaporating the low-temperature and low-pressure liquid refrigerant into a low-temperature and low-pressure gaseous refrigerant may be included.
- the coolant circuit includes a battery heat exchanger 500 that directly or indirectly heats the battery of the vehicle with the coolant in the coolant circuit and the second heat exchanger 400 that generates heat exchange between the coolant and the coolant in the coolant circuit. ) may be included.
- the second heat exchanger 400 may be formed as a chiller that radiates heat from the cooling water circuit to the refrigerant circuit and functions as an evaporator of the refrigerant circuit.
- the refrigerant circuit may further include a separate evaporator (not shown) in addition to the second heat exchanger 400, and at least one of the first heat exchanger 200 and the separate evaporator (not shown) It may be perfused by the air supplied to the passenger compartment.
- the refrigerant circuit further includes a measuring means 600 for measuring the pressure and temperature of the refrigerant flowing into the compressor 100 between the downstream of the second heat exchanger 400 and the upstream of the compressor 100 . can do.
- the measuring means 600 may be a pressure sensor and a temperature sensor.
- the coolant circuit may further include a pump 700 for circulating coolant in the coolant circuit.
- the cooling water circuit may further include a heater 800 for transferring additional heat to the cooling water.
- thermal management system may be configured to be operated by the thermal management system control method according to an embodiment of the present invention as follows.
- the determination step (S1) and the determination step (S1) in which it is determined whether the amount of refrigerant (more precisely, the amount of refrigerant in the compressor 100) is in a low refrigerant state less than the reference amount of refrigerant ) may include an action step (S2) in which an action is taken when it is determined in the low refrigerant state.
- the determination step (S1) may include a first determination step (S11) in which it is determined whether the thermal management system is operating in a reference mode; a second determination step (S12) in which it is determined whether a first reference time has elapsed after the start of the operation of the compressor (100); a measuring step (S15) of measuring the pressure and temperature of the refrigerant flowing into the compressor (100) through the measuring means (600); a detecting step (S16) of detecting a degree of superheat of the refrigerant from the pressure and temperature of the refrigerant measured in the measuring step (S15); a third determination step (S13) of determining whether the superheat degree of the refrigerant detected in the detection step (S16) is equal to or greater than the first reference temperature; And it is determined in the first determination step (S11) that the thermal management system is operating in the reference mode, and in the second determination step (S12), that the first reference time has elapsed after the start of the operation of the compressor 100 and a fourth
- the degree of superheat is the degree to which the refrigerant is heated to a temperature higher than the saturation temperature in the process of going from the second heat exchanger 400 to the compressor 100, as shown in FIG.
- the refrigerant amount is the standard refrigerant amount in a steady state
- the superheating degree becomes a high level immediately after the operation of the compressor 100 is started and then stabilizes to a low level after approximately 60 seconds
- the refrigerant amount In the case of the low refrigerant state the degree of superheat may be maintained at a high level even after 60 seconds.
- the first reference time is set to 60 seconds.
- the degree of superheat is less than 30 degrees (K), whereas the amount of refrigerant is the low flow rate.
- the first reference temperature be set to 30 degrees (K) in consideration of that the superheating degree is 30 degrees (K) or more when 60 seconds have elapsed from the start of the operation of the compressor 100.
- the action step (S2) is a compressor control step ( S21) and an alarm step (S22) of generating an alarm (eg, an alarm, a diagnostic code).
- an alarm eg, an alarm, a diagnostic code
- the thermal management system may further include a control unit for implementing the method for controlling the thermal management system.
- control unit may be configured to determine whether the battery thermal management mode operates, detect the degree of overheating, and determine whether the low-refrigerant state is present.
- control unit may be configured to determine whether the low-refrigerant state is in the battery thermal management mode.
- control unit may be configured to determine whether the low refrigerant state is present when the first reference time has elapsed after the compressor 100 starts to operate.
- control unit may be configured to detect the degree of superheat from the pressure and temperature of the refrigerant flowing into the compressor 100 , and determine the low refrigerant state when the degree of superheat is equal to or greater than the first reference temperature.
- control unit may be configured to limit at least one of a maximum rotation speed of the compressor 100 and a rotation speed increase/decrease speed when it is determined that the low refrigerant state is present.
- control unit may be configured to generate an alarm when it is determined that the low refrigerant state is present.
- control unit may be an ECU of a vehicle or a thermal control unit for a vehicle.
- the compressor 100 responds immediately and accurately when the compressor control step S21 is executed, so that a motor generating power, a rotating shaft rotated by the motor, an orbiting scroll rotated by the rotating shaft, and the orbiting It may be preferable that the motor comprises a fixed scroll forming a compression chamber together with the scroll, and wherein the motor is controlled by the thermal management system control method.
- the thermal management system and the control method therefor include the first determination step S11, that is, when the thermal management system is operating in the battery thermal management mode, the compressor 100 By determining the amount of refrigerant of
- the thermal management system and the control method therefor include the second determination step (S12), that is, after stabilization, the first reference time elapses after the start of the operation of the compressor 100
- the second determination step (S12) that is, after stabilization, the first reference time elapses after the start of the operation of the compressor 100
- the thermal management system and the control method therefor include the third determination step ( S13 ), that is, easily calculated from the pressure and temperature of the refrigerant, and differ according to the amount of refrigerant in the compressor ( 100 ).
- the third determination step ( S13 ) that is, easily calculated from the pressure and temperature of the refrigerant, and differ according to the amount of refrigerant in the compressor ( 100 ).
- the thermal management system and the control method therefor include the fourth determination step (S14), that is, the first determination step (S11), the second determination step (S12), and the second determination step (S14).
- the fourth determination step (S14) that is, the first determination step (S11), the second determination step (S12), and the second determination step (S14).
- the thermal management system and the control method therefor include the compressor control step S21, that is, the amount of refrigerant in the compressor 100 is determined as the low refrigerant state in the determination step S1.
- the thermal management system can be continuously operated while suppressing damage to the compressor 100 due to insufficient oil.
- the thermal management system and the control method therefor include the warning step (S22), that is, in the determination step (S1), the amount of refrigerant in the compressor 100 is determined to be the low refrigerant state. By notifying the driver in the event of this, an inspection and refilling of refrigerant and oil can be induced.
- the compressor 100 since the compressor 100 according to the present embodiment is formed as an electric compressor, the compressor 100 may immediately and accurately respond to the compressor control step S21 when the compressor control step S21 is executed. Accordingly, damage to the compressor 100 can be effectively suppressed.
- the second determination step S12 is performed, and , only when it is determined that the first reference time has elapsed after the start of the operation of the compressor 100 in the second determination step S12, the process proceeds to the third determination step S13, and the third determination step S13 ), only when it is determined that the degree of superheat is equal to or greater than the first reference temperature, the process proceeds to the fourth determination step (S14).
- the first determination step (S11) it is determined in the first determination step (S11) that the thermal management system is not operating in the battery thermal management mode, or after the compressor 100 starts to operate in the second determination step (S12), the first If it is determined that the reference time has not elapsed or it is determined in the third determination step S13 that the degree of superheat is less than the first reference temperature, the process returns to the start step.
- the present invention is not limited thereto. That is, the order of the first determination step S11 , the second determination step S12 , and the third determination step S13 may be adjusted.
- the first determination step (S11), the second determination step (S12), and the third determination step (S13) are executed independently of each other, and the fourth determination step (S14) is the first determination step ( S11), the second determination step (S12) and the third determination step (S13) may be combined to determine whether the refrigerant amount of the compressor 100 is in the low refrigerant state.
- the measuring step (S15) and the detecting step (S16) are interposed between the first determining step (S11) and the second determining step (S12), but the present invention is not limited thereto. That is, the positions of the measuring step (S15) and the detecting step (S16) can be appropriately adjusted as long as the degree of superheat detected in the detecting step (S16) can be used for the third determination step (S13). .
- the measuring means 600 is formed to measure the pressure and temperature of the refrigerant flowing into the compressor 100, and the heat management system control method is measured by the measuring means 600. It is formed to detect the degree of superheat from the pressure and temperature of the refrigerant flowing into the compressor 100 and determine the amount of refrigerant in the compressor 100 using the detection, but is not limited thereto.
- the measuring means 600 ′ of the thermal management system is between the downstream of the first heat exchanger 200 and the upstream of the expansion means 300 . is formed to measure the pressure and temperature of the refrigerant flowing into the expansion means 300 in Detect and determine the degree of supercooling from the pressure and temperature (as shown in FIG. 3 , the degree to which the refrigerant is cooled to a temperature lower than the saturation condensation temperature in the process from the first heat exchanger 200 to the expansion means 300 ) It may be formed to determine the amount of refrigerant in the compressor 100 using the degree of subcooling in step S1'.
- the thermal management system and the control method therefor are similar to the above-described embodiment except that the measuring step (S15'), the detecting step (S16'), the third determining step (S13), and the second 4
- the determination step (S14') may be formed to use the supercooling degree.
- the measuring step (S15') may be formed so that the pressure and temperature of the refrigerant flowing into the expansion means 300 are measured.
- the detection step (S16') may be formed such that the degree of supercooling of the coolant is detected from the pressure and temperature of the coolant measured in the measurement step (S15').
- the third determination step (S13') may be configured to determine whether the detected degree of subcooling of the refrigerant is equal to or less than the second reference temperature and continues for more than a second reference time.
- the fourth determination step (S14') it is determined in the first determination step (S11) that the thermal management system is operating in the reference mode, and in the second determination step (S12), the compressor 100 ), when it is determined that the first reference time has elapsed, and it is determined in the third determination step (S13') that the degree of subcooling is below the second reference temperature and continues for more than the second reference time, It may be formed to be determined to be in the low refrigerant state.
- the third determination step (S13') and the fourth determination step (S14') determine whether the degree of supercooling is equal to or less than the second reference temperature. It is formed to determine whether the low refrigerant state is not determined by determining whether the refrigerant state is present, but by whether the degree of subcooling has continued for more than the second reference time in a state below the second reference temperature, and the second reference temperature is 2 degrees (K ), and the second reference time may be set to 10 seconds.
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims (14)
- 순환되는 냉각수 및 상기 냉각수를 차량의 배터리와 열교환시키는 배터리 열교환기를 갖는 냉각수 회로;냉매를 압축하는 압축기, 상기 압축기에 의해 압축된 냉매를 냉각시키는 제1 열교환기, 상기 제1 열교환기에 의해 냉각된 냉매를 팽창시키는 팽창수단 및 상기 팽창수단에 의해 팽창된 냉매를 상기 냉각수와 열교환시키는 제2 열교환기를 갖는 냉매 회로;상기 냉매의 압력과 온도를 측정하는 측정수단; 및상기 냉각수 회로와 상기 냉매 회로가 작동하되 상기 차량의 실내 냉방과 난방이 작동하지 않는 배터리 열 관리 모드로 작동하고 있는지를 판단하고, 상기 측정수단으로부터 측정된 상기 냉매의 압력과 온도로부터 상기 냉매의 과열도 또는 과냉도를 검출하며, 상기 압축기의 냉매량이 기준 냉매량보다 적은 저냉매 상태인지를 판단하는 제어부;를 포함하는 열 관리 시스템.
- 제1항에 있어서,상기 제어부는 상기 차량의 실내 냉방과 난방이 작동하지 않는 조건에서 상기 배터리 열 관리 모드가 작동되고 있을 때 상기 저냉매 상태 여부를 판단하도록 형성되는 열 관리 시스템.
- 제2항에 있어서,상기 제어부는 상기 압축기의 작동 개시 후 제1 기준 시간이 경과되었을 때 상기 저냉매 상태 여부를 판단하도록 형성되는 열 관리 시스템.
- 제3항에 있어서,상기 제어부는 상기 압축기로 유입되는 냉매의 압력과 온도로부터 상기 과열도를 검출하고, 상기 과열도가 제1 기준 온도 이상일 때 상기 저냉매 상태라고 판단하도록 형성되는 열 관리 시스템.
- 제3항에 있어서,상기 제어부는 상기 팽창수단에 유입되는 냉매의 압력과 온도로부터 상기 과냉도를 검출하고, 상기 과냉도가 제2 기준 온도 이하인 상태로 제2 기준 시간 이상 지속될 때 상기 저냉매 상태라고 판단하도록 형성되는 열 관리 시스템.
- 제1항에 있어서,상기 제어부는 상기 저냉매 상태라고 판단한 경우 상기 압축기의 최대 회전수 및 회전수 증감 속도 중 적어도 하나를 제한하도록 형성되는 열 관리 시스템.
- 제1항에 있어서,상기 제어부는 상기 저냉매 상태라고 판단한 경우 경보를 발생시키도록 형성되는 열 관리 시스템.
- 순환되는 냉각수 및 상기 냉각수를 차량의 배터리와 열교환시키는 배터리 열교환기를 갖는 냉각수 회로; 냉매를 압축하는 압축기, 상기 압축기에 의해 압축된 냉매를 냉각시키는 제1 열교환기, 상기 제1 열교환기에 의해 냉각된 냉매를 팽창시키는 팽창수단 및 상기 팽창수단에 의해 팽창된 냉매를 상기 냉각수와 열교환시키는 제2 열교환기를 갖는 냉매 회로; 상기 냉매의 압력과 온도를 측정하는 측정수단; 및 상기 냉각수 회로와 상기 냉매 회로가 작동하되 상기 차량의 실내 냉방과 난방이 작동하지 않는 배터리 열 관리 모드로 작동하고 있는지를 판단하고, 상기 측정수단으로부터 측정된 상기 냉매의 압력과 온도로부터 상기 냉매의 과열도 또는 과냉도를 검출하며, 상기 압축기의 냉매량이 기준 냉매량보다 적은 저냉매 상태인지를 판단하는 제어부;를 포함하는 열 관리 시스템을 제어하기 위한 열 관리 시스템 제어 방법으로서,상기 열 관리 시스템이 상기 배터리 열 관리 모드로 작동되고 있는지가 판단되는 제1 판단 단계;상기 압축기의 작동 개시 후 제1 기준 시간이 경과되었는지가 판단되는 제2 판단 단계;상기 과열도 또는 과냉도가 기준 온도와 비교되는 제3 판단 단계; 및상기 제1 판단 단계, 상기 제2 판단 단계 및 상기 제3 판단 단계의 판단 결과에 기초하여 상기 저냉매 상태인지가 판단되는 제4 판단 단계;를 포함하는 열 관리 시스템 제어 방법.
- 제8항에 있어서,상기 제3 판단 단계에서 상기 압축기에 유입되는 냉매의 압력과 온도로부터 검출되는 과열도가 제1 기준 온도 이상인지가 판단되고,상기 제1 판단 단계에서 상기 열 관리 시스템이 상기 배터리 열 관리 모드로 작동되고 있다고 판단되고 상기 제2 판단 단계에서 상기 압축기의 작동 개시 후 상기 제1 기준 시간이 경과되었다고 판단되며 상기 제3 판단 단계에서 상기 과열도가 상기 제1 기준 온도 이상이라고 판단되는 경우, 상기 제4 판단 단계에서 상기 저냉매 상태라고 판단되는 것을 특징으로 하는 열 관리 시스템 제어 방법.
- 제8항에 있어서,상기 제3 판단 단계에서 상기 팽창수단에 유입되는 냉매의 압력과 온도로부터 검출되는 과냉도가 제2 기준 온도 이하인지 및 상기 과냉도가 상기 제2 기준 온도 이하인 상태가 제2 기준 시간 이상 지속되었는지가 판단되고,상기 제1 판단 단계에서 상기 열 관리 시스템이 상기 배터리 열 관리 모드로 작동되고 있다고 판단되고, 상기 제2 판단 단계에서 상기 압축기의 작동 개시 후 상기 제1 기준 시간이 경과되었다고 판단되며, 상기 제3 판단 단계에서 상기 과냉도가 상기 제2 기준 온도 이하인 상태가 상기 제2 기준 시간 이상 지속되었다고 판단되는 경우, 상기 제4 판단 단계에서 상기 저냉매 상태라고 판단되는 것을 특징으로 하는 열 관리 시스템 제어 방법.
- 제8항에 있어서,상기 제1 판단 단계에서 상기 열 관리 시스템이 상기 배터리 열 관리 모드로 작동되고 있다고 판단될 경우, 상기 제2 판단 단계가 실행되고,상기 제2 판단 단계에서 상기 압축기의 작동 개시 후 상기 제1 기준 시간이 경과되었다고 판단될 경우, 상기 제3 판단 단계가 실행되는 것을 특징으로 하는 열 관리 시스템 제어 방법.
- 제8항에 있어서,상기 제4 판단 단계에서 상기 저냉매 상태라고 판단되는 경우, 상기 압축기의 최대 회전수 및 회전수 증감 속도 중 적어도 하나를 제한하는 압축기 제어 단계를 더 포함하는 열 관리 시스템 제어 방법.
- 제8항에 있어서,상기 제4 판단 단계에서 상기 저냉매 상태라고 판단되는 경우, 경보를 발생시키는 경보 단계를 더 포함하는 열 관리 시스템 제어 방법.
- 동력을 발생시키는 모터;상기 모터에 의해 회전되는 회전축;상기 회전축에 의해 선회 운동되는 선회 스크롤; 및상기 선회 스크롤과 함께 압축실을 형성하는 고정 스크롤;을 포함하고,제1항 내지 제13항 중 어느 한 항에 따른 열 관리 시스템에 포함되는 압축기.
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| US18/547,159 US12459329B2 (en) | 2021-04-02 | 2022-03-22 | Thermal management system, control method therefor, and compressor included therein |
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| KR1020210043587A KR102953537B1 (ko) | 2021-04-02 | 열 관리 시스템, 이에 대한 제어 방법 및 이에 포함되는 압축기 | |
| KR10-2021-0043587 | 2021-04-02 |
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Citations (5)
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| JPH11334356A (ja) * | 1998-05-28 | 1999-12-07 | Zexel:Kk | 車両用空調装置 |
| JP5245575B2 (ja) * | 2008-06-27 | 2013-07-24 | ダイキン工業株式会社 | 空気調和装置の冷媒量判定方法および空気調和装置 |
| KR20160066180A (ko) * | 2014-12-02 | 2016-06-10 | 현대자동차주식회사 | 전기자동차용 히트펌프 시스템 및 이의 제어 방법 |
| JP2018035979A (ja) * | 2016-08-30 | 2018-03-08 | 大阪瓦斯株式会社 | ヒートポンプシステムの検査方法、及び、ヒートポンプシステム |
| WO2020071801A1 (ko) * | 2018-10-04 | 2020-04-09 | 한온시스템 주식회사 | 열관리 시스템 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3765191A (en) * | 1972-06-21 | 1973-10-16 | Gen Motors Corp | Timer circuit-automotive compressor |
| KR102182171B1 (ko) * | 2019-03-08 | 2020-11-24 | 엘지전자 주식회사 | 스크롤 압축기 |
-
2022
- 2022-03-22 US US18/547,159 patent/US12459329B2/en active Active
- 2022-03-22 WO PCT/KR2022/003942 patent/WO2022211342A1/ko not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11334356A (ja) * | 1998-05-28 | 1999-12-07 | Zexel:Kk | 車両用空調装置 |
| JP5245575B2 (ja) * | 2008-06-27 | 2013-07-24 | ダイキン工業株式会社 | 空気調和装置の冷媒量判定方法および空気調和装置 |
| KR20160066180A (ko) * | 2014-12-02 | 2016-06-10 | 현대자동차주식회사 | 전기자동차용 히트펌프 시스템 및 이의 제어 방법 |
| JP2018035979A (ja) * | 2016-08-30 | 2018-03-08 | 大阪瓦斯株式会社 | ヒートポンプシステムの検査方法、及び、ヒートポンプシステム |
| WO2020071801A1 (ko) * | 2018-10-04 | 2020-04-09 | 한온시스템 주식회사 | 열관리 시스템 |
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| Publication number | Publication date |
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| US20240123790A1 (en) | 2024-04-18 |
| KR20220137460A (ko) | 2022-10-12 |
| US12459329B2 (en) | 2025-11-04 |
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