CN112440662B - Control method and control system of thermal management system - Google Patents

Control method and control system of thermal management system Download PDF

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Publication number
CN112440662B
CN112440662B CN202010623315.7A CN202010623315A CN112440662B CN 112440662 B CN112440662 B CN 112440662B CN 202010623315 A CN202010623315 A CN 202010623315A CN 112440662 B CN112440662 B CN 112440662B
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temperature
air
interval
air outlet
mode
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CN112440662A (en
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何煜
贾曼
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Hangzhou Lvneng New Energy Auto Parts Co ltd
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Hangzhou Lvneng New Energy Auto Parts Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00807Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a specific way of measuring or calculating an air or coolant temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The embodiment of the application discloses a control method and a control system of a thermal management system, which can respectively provide accurate control targets for a cold source and a heat source by judging the operating state, the ambient temperature, an air outlet mode, a required air outlet temperature, an automatic/manual control mode of a circulating air door, the state position of the manual control mode of the circulating air door and the like and combining the comfort requirement of the passenger compartment, and ensure the accuracy of the temperature control of the cold/heat source meeting the comfort of the passenger compartment in the operating state of a single-temperature-zone mode or a double-temperature-zone mode.

Description

Control method and control system of thermal management system
[ technical field ] A method for producing a semiconductor device
The present application relates to the field of control technologies, and in particular, to a control method and a control system for a thermal management system.
[ background of the invention ]
In the related art, a basic parameter of an air conditioning system of a vehicle is determined according to a target temperature, an in-vehicle temperature and an ambient temperature required by a user, a plurality of operating parameters corresponding to an operating mode are obtained according to the basic parameter, and the on/off of a motor of each component corresponding to each operating parameter is controlled according to the operating parameters. The determination mode of the basic parameters is as follows: firstly, determining a reference comfort temperature and a compensation quantity according to the environment temperature, and then substituting the target temperature, the temperature in the vehicle, the reference comfort temperature and the compensation quantity into a formula to calculate. The air conditioning system can adjust the operation mode of the air conditioner in real time according to the self demand, the temperature in the vehicle and the ambient temperature, and the comfort level of passengers is good.
The inventors have recognized that the control method of the related art air conditioning system is complicated and has a need for improvement.
[ summary of the invention ]
In view of this, embodiments of the present application provide a control method and system for a thermal management system, and provide a control method and control system for a simpler thermal management system.
In a first aspect, an embodiment of the present application provides a control method for a thermal management system, where the thermal management system has a circulation damper, a refrigeration system, a heating system, and a control device, the control device may control operating states of the circulation damper, the refrigeration system, and the heating system, and the control method is executed by the control device, and the control method includes: acquiring a required air outlet temperature and an atmospheric environment temperature; judging an environment temperature interval where the environment temperature is located according to the environment temperature, and judging a required air outlet temperature interval where the required air outlet temperature is located according to the required air outlet temperature; and controlling the working state of at least one of the refrigerating system, the heating system and the circulating air door according to the environment temperature interval where the environment temperature is located and the required air outlet temperature interval where the required air outlet temperature is located.
Through the scheme that this embodiment provided, thermal management system can confirm the ambient temperature interval that ambient temperature is located according to the ambient temperature who acquires and confirm the demand air-out temperature interval that demand air-out temperature is located according to the demand air-out temperature who acquires to adjust refrigerating system's operating condition, heating system's operating condition and circulating air door's operating condition, control method is simple relatively.
In a second aspect, an embodiment of the present application provides a control system for a thermal management system, where the thermal management system has a circulation damper, a refrigeration system, a heating system, and a control device, and the control device includes: the acquisition module is used for acquiring the required air outlet temperature and the ambient temperature of the atmosphere; the judging module is used for judging an environment temperature interval where the environment temperature is located and judging a required air outlet temperature interval where the required air outlet temperature is located; and the control module is used for enabling the control device to control the working state of at least one of the refrigerating system, the heating system and the circulating air door according to the environment temperature interval where the environment temperature is located and the required air outlet temperature interval where the required air outlet temperature is located.
Through the scheme provided by the embodiment, the control system controls the thermal management system to adjust the working state of the refrigerating system, the working state of the heating system and the working state of the circulating air door according to the acquired environmental temperature and the required air outlet temperature, and the relatively simple thermal management system control system is provided.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic step diagram of a control method of a thermal management system provided in embodiment 1 of the present application;
fig. 2a to fig. 2i are flowcharts of the control method of the thermal management system according to embodiment 2 of the present application under different conditions when the air conditioner is in the single temperature zone mode;
fig. 3a to fig. 3g are flowcharts of the control method of the thermal management system according to embodiment 2 of the present application under different conditions when the air conditioner is in the operating state of the dual temperature zone mode;
fig. 4 is a schematic block diagram of a thermal management system control system provided in embodiment 3 of the present application.
Reference numerals:
1-a circulating air door;
2-a refrigeration system;
3-a heating system;
4-a control device;
41-an acquisition module;
42-a judgment module;
43-control module.
[ detailed description ] A
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 1, embodiment 1 of the present application discloses a control method of a thermal management system. The heat management system is provided with a circulating air door, a refrigerating system, a heating system and a control device, wherein the control device can control the working states of the circulating air door, the refrigerating system and the heating system, and the control method is executed by the control device. The control method comprises the following steps:
the method comprises the following steps: and acquiring the ambient temperature T0 of the atmosphere and the required outlet air temperature D of the thermal management system.
Step two: the ambient temperature interval where the ambient temperature T0 is located is judged according to the ambient temperature T0, and the demand air-out temperature interval where the demand air-out temperature D is located is judged according to the demand air-out temperature D.
The environment temperature interval comprises a first interval, a second interval and a third interval, wherein the first interval is suitable for summer with higher temperature, the second interval is suitable for winter with lower temperature, and the third interval is suitable for spring and autumn with not high or low temperature; the required air outlet temperature interval comprises a first required air outlet temperature interval, a second required air outlet temperature interval, a third required air outlet temperature interval, a fourth required air outlet temperature interval and a fifth required air outlet temperature interval.
And judging the operating state and the air outlet mode of the thermal management system according to the acquired required air outlet temperature D.
Optionally, the thermal management system may be applied to a vehicle provided with an air conditioning system. For convenience of description, the following embodiments are described taking an air conditioning system applied to a vehicle as an example.
Optionally, demand air-out temperature can be for thermal management system according to ambient temperature, temperature in the car, settlement temperature and sunshine are according to the calculated value that obtains of calculation, under the ambient temperature of difference, everybody is different to the sensation of temperature, and ambient temperature, temperature in the car and sunshine are also considered to this calculated value, consider outer environmental factor of car and car internal environmental factor simultaneously, compare in setting for the temperature and more accord with actual conditions, the travelling comfort of the wind that air conditioning system blown out is preferred.
The operation state of the air conditioning system comprises a single-temperature-zone mode and a double-temperature-zone mode, wherein the single-temperature-zone mode refers to a mode that the temperature of the whole area in the automobile, namely the temperature of the front and rear seats and the temperature of the main driving side and the temperature of the auxiliary driving side are uniformly adjusted by the air conditioning system; the two-temperature zone mode refers to a mode in which the temperatures of the driver side and the passenger side or the temperatures of the front seat and the rear seat in the vehicle, that is, the temperatures of at least two zones, are individually adjusted by the air conditioning system. For example, the required outlet air temperature D includes a first required outlet air temperature D1 and a second required outlet air temperature D2. If the first required outlet air temperature D1 is the same as the second required outlet air temperature D2, the operation state is the single temperature zone mode; if the first required outlet air temperature D1 is different from the second required outlet air temperature D2, the operation state is a dual-temperature-zone mode, and in the dual-temperature-zone mode, the thermal management system starts at least two of the external circulation states of the heating system, the refrigerating system and the circulating air door. At this time, the maximum value between the first required outlet air temperature D1 and the second required outlet air temperature D2 is denoted as MAXD, and the minimum value is denoted as MIND.
According to the control method of the thermal management system, the thermal management system performs unified regulation on the temperatures of the main driving side and the auxiliary driving side in a single-temperature-zone operation state, and performs respective regulation on the temperatures of the main driving side and the auxiliary driving side in a double-temperature-zone operation state, and under the two operation states, the thermal management system can automatically meet the comfort experience in a targeted manner according to the environment temperature and different requirements of users.
The heating system can provide a heat source in the heat management system, the refrigerating system can provide a cold source, the external circulation state of the circulating air door can provide the heat source or the cold source according to different environmental temperatures, the heat source and the cold source are balanced in the dual-temperature-zone mode, different temperature requirements of two zones can be met simultaneously, energy of the environmental temperature brought by the external circulation state can be utilized in the single-temperature-zone mode and the dual-temperature-zone mode, and the purpose of energy conservation can be achieved.
The air outlet mode comprises a first mode, a second mode and a third mode, wherein the first mode sends out cold air, the second mode sends out hot air and the third mode sends out cold and hot mixed air; the air outlet mode is the first mode when demand air outlet temperature D is in the first demand air outlet temperature interval, the second demand air outlet temperature interval and the third demand air outlet temperature interval, the air outlet mode is the second mode when demand air outlet temperature D is in the fifth demand air outlet temperature interval, and the air outlet mode is the third mode when demand air outlet temperature D is in the fourth demand air outlet temperature interval.
Step three: and controlling the working state of at least one of the refrigerating system, the heating system and the circulating air door according to the environment temperature interval where the environment temperature T0 is located and the required air outlet temperature interval where the required air outlet temperature D is located.
The control mode of the circulating air door comprises an automatic mode and a manual mode; when the control mode of the circulating air door is an automatic mode, the control device controls the circulating air door to be in an external circulation state or an internal circulation state according to the environment temperature T0 and the required air outlet temperature D; when the control mode of the circulating air door is a manual mode, the control device controls the circulating air door to be in an external circulation state or an internal circulation state according to user requirements.
According to the control method of the heat management system, the heat management system can realize full-automatic control or semi-automatic control, the working states of the refrigerating system, the heating system and the circulating air door can be adjusted fully automatically or semi-automatically according to the acquired ambient temperature T0 and the required air outlet temperature D by combining whether the heat management system is in a single-temperature-zone mode or a double-temperature-zone mode and whether the circulating air door is in a manual mode or an automatic mode, the ambient temperature T0 and the required air outlet temperature D are both subjected to interval management, each interval can be used for adjusting a heat source and a cold source in a targeted manner, the comfort is improved, the adjusting accuracy of the refrigerating system and the heating system is improved, and the use experience of a user is improved.
In some other embodiments, the control mode of the circulating damper may only include an automatic mode, that is, the working state of the circulating damper is adjusted according to the ambient temperature and the required outlet air temperature. In some other embodiments, the control of the circulation damper may include only manual means, i.e., the operation of the circulation damper is adjusted according to the actual needs of the user. The control method is adjusted according to the actual design of the circulating air door of the thermal management system, and the application is not limited.
In the control method of the thermal management system, a first temperature T1 and a second temperature T2 for judging an ambient temperature interval are set, wherein the first temperature T1 is greater than the second temperature T2. If the ambient temperature T0 is greater than or equal to the first temperature T1, the ambient temperature interval is the first interval; if the ambient temperature T0 is less than or equal to the second temperature T2, the ambient temperature interval is a second interval; if the ambient temperature T0 is less than the first temperature T1 and greater than the second temperature T2, the ambient temperature range is the third range.
According to the control method of the thermal management system, three temperature intervals are divided by two temperature thresholds, and according to the setting of the temperature thresholds, the thermal management system can adopt a targeted automatic adjustment scheme aiming at different seasons, so that the adjustment is more intelligent, and the provided comfort is better.
In this control method of thermal management system, judge the demand air-out temperature interval that demand air-out temperature D locates according to demand air-out temperature D, include: and judging the relation between the required outlet air temperature D and a first set value DS1, a second set value DS2, a third set value DS3 and a fourth set value DS4, wherein the first set value DS1 is smaller than the second set value DS2, the second set value DS2 is smaller than the third set value DS3, and the third set value DS3 is smaller than the fourth set value DS 4. If the required air outlet temperature D is smaller than a first set value DS1, the required air outlet temperature D is in a first required air outlet temperature interval; if the required air outlet temperature is greater than the first set value DS1 and less than or equal to the second set value DS2, the required air outlet temperature interval is a second required air outlet temperature interval; if the required outlet air temperature is greater than the second set value DS2 and less than or equal to the third set value DS3, the required outlet air temperature interval is a third required outlet air temperature interval; if the required outlet air temperature is greater than the third set value DS3 and less than the fourth set value DS4, the required outlet air temperature interval is a fourth required outlet air temperature interval; if the required outlet air temperature is greater than or equal to the fourth set value DS4, the required outlet air temperature interval is a fifth required outlet air temperature interval. When the required air outlet temperature is less than or equal to a third set value, the air outlet mode is a first mode, and cold air is sent out; when the required air outlet temperature is greater than or equal to a fourth set value, the air outlet mode is a second mode, and hot air is sent out; and when the required air outlet temperature is greater than the third set value and less than the fourth set value, the air outlet mode is a third mode, and cold and hot mixed air is sent out.
According to the control method of the heat management system, the required air outlet temperature interval is divided into five in each environment temperature interval, the working states of the refrigerating system, the heating system and the circulating air door can be controlled in a targeted manner more accurately according to the required air outlet temperature D, so that the adjustment accuracy of the heat management system is higher, and the user experience is better.
In some other embodiments, the three air outlet modes may not be divided according to the required air outlet temperature, and the control is realized by only dividing five required air outlet temperature intervals according to the required air outlet temperature.
In some other embodiments, the ambient temperature may be divided into a plurality of intervals in each required outlet air temperature interval, and the purpose of improving the adjustment accuracy of the thermal management system and improving the user experience may also be achieved.
In this embodiment, the quantity between the demand air-out temperature interval is five, and the ambient temperature interval is three, and in some other embodiments, the quantity between the demand air-out temperature interval and the quantity between the ambient temperature interval can freely set for as required, and this application does not limit.
In the control method of the heat management system, when the air outlet mode is judged to be the first mode, if the operation state of the heat management system is the dual-temperature-zone mode, the heating system is started to ensure different temperature requirements of different areas under the dual-temperature-zone mode.
When the air-out mode is judged to be the first mode, and the required air-out temperature interval is judged to be the second required air-out temperature interval or the third required air-out temperature interval, if the operation state of the heat management system is the single temperature zone mode, the environment temperature interval is the second interval, and because the environment temperature is lower at the moment, the heating system is opened, so that the temperature in the vehicle can not be too low, and the thermal comfort is ensured.
In the control method of the thermal management system, when the ambient temperature T0 is less than or equal to a second temperature T2, namely the ambient temperature interval is a second interval, the air outlet mode is a second mode, the required air outlet temperature D is greater than or equal to a fourth set value DS4, and the heating system and the external circulation state are simultaneously started, wherein when the thermal management system is in a single-temperature-zone mode and the circulation air door is in an internal circulation state in a manual mode, the circulation air door is in the internal circulation state according to the requirement of a user; when the thermal management system is in a dual-temperature-zone mode and the circulating air door is in an internal circulation state in a manual mode, the refrigerating system needs to be started to meet the temperature requirements of two zones.
According to the control method of the heat management system, when the heat management system is in a second interval with lower temperature and adopts a second mode (namely a heating mode), the external circulation and the heating system are started simultaneously, and a heating dehumidification mode is formed by utilizing the ambient temperature with lower temperature, so that the aim of reducing the humidity can be fulfilled on one hand.
In the control method of the thermal management system, when the ambient temperature T0 is greater than or equal to the first temperature T1, the required outlet air temperature D is less than or equal to the third set value DS3, and the circulating damper is in an internal circulation state in an automatic mode.
According to the control method of the heat management system, when the heat management system is in a first interval with higher temperature and adopts a first mode (namely a refrigeration mode), the circulating air door is opened in an internal circulation state as far as possible, so that the influence caused by the environment with higher temperature is reduced, the refrigeration capacity of the refrigeration system can be fully utilized, and the purposes of quickly cooling and saving energy are achieved.
In the control method of the thermal management system, if the range value of the environment temperature interval in which the environment temperature T0 is located is partially overlapped with the range value of the demand outlet air temperature interval in which the demand outlet air temperature D is located, according to the relationship between the environment temperature and the demand outlet air temperature, if the operating state is in the single temperature zone mode, the refrigeration system and the heating system can be closed, and the external circulation is opened. If the operation state is in the dual-temperature-zone mode, the heating system needs to be started to meet different temperature requirements of the two zones.
According to the control method of the heat management system, when the ambient temperature T0 is close to the required air outlet temperature D, the refrigeration system and the heating system can be closed according to the magnitude relation between the ambient temperature T0 and the required air outlet temperature D, the circulating air door is in an outer circulation state, and the ambient temperature T0 of the atmosphere is utilized to meet the temperature requirement, so that the energy-saving purpose is achieved.
In the control method of the thermal management system, when the refrigeration system is started, the refrigeration system adjusts the target evaporation temperature according to the running state, the ambient temperature, the required outlet air temperature and the state of the circulating air door of the thermal management system.
According to the control method of the heat management system, the heat management system realizes the state control of the cold source by adjusting the target evaporation temperature in the refrigeration system.
In the control method of the thermal management system, when the heating system is started, the heating system adjusts the target working temperature according to the running state, the ambient temperature, the required outlet air temperature and the state of the circulating air door of the thermal management system.
According to the control method of the heat management system, the heat management system realizes the control of the state of the heat source by adjusting the target working temperature in the heating system.
Example 2
As shown in fig. 2a to 2i and fig. 3a to 3g, the control method disclosed in this embodiment is used to control a thermal management system, and optionally, the thermal management system may be applied to a vehicle, for example, may be applied to an air conditioning system of a pure electric vehicle, where the heating system may include a coolant circulation loop, a warm air core is disposed in the coolant circulation loop, when the heating system is turned on, the coolant provides a heat source for a vehicle cabin through the warm air core when the coolant circulates, and the heat in the coolant may be from a heater with a heating function, or heat recovered by waste heat, or heat provided by both the heater and the waste heat recovery, and is selected according to an operating state of the thermal management system, and the heating system adjusts a target operating temperature of the warm air core according to a required outlet air temperature D. The refrigerating system comprises a refrigerant loop, a compressor is arranged in the refrigerant loop, when the refrigerating system is started, the compressor is started, the refrigerant circularly flows and provides a cold source for the carriage through a heat exchanger, and the refrigerating system adjusts the rotating speed of the compressor according to the required air outlet temperature D. The electric vehicle is provided with a sensor device arranged outside the vehicle and used for detecting the atmospheric environment temperature.
Taking an air conditioning system applied to a pure electric vehicle as an example, the specific flow is as follows:
step 100: and starting the air conditioner.
Step 200: and acquiring the ambient temperature T0 of the atmosphere and the required outlet air temperature D of the air conditioning system.
The required air outlet temperature D of the air conditioning system comprises a first required air outlet temperature D1 of a main driving side and a second required air outlet temperature D2 of an auxiliary driving side.
Step 300: and judging the running state of the air conditioner according to the required air outlet temperature D. Wherein, the operation state comprises a single-temperature zone mode and a double-temperature zone mode.
If the first required outlet air temperature D1 is the same as the second required outlet air temperature D2, the operation state is in the single temperature zone mode; if the first required outlet air temperature D1 is different from the second required outlet air temperature D2, the operation state is the dual-temperature-zone mode, and at this time, the larger value between the first required outlet air temperature D1 and the second required outlet air temperature D2 is denoted as MAXD, and the smaller value is denoted as mix.
Step 400: the environmental temperature T0 is compared with the preset first temperature T1 and second temperature T2, and the environmental temperature interval in which the environmental temperature T0 is located is determined.
Wherein the temperature environment section is divided into a first section, a second section and a third section by a first temperature T1 and a second temperature T2, wherein T1 > T2. When T0 is more than or equal to T1, the ambient temperature T0 is in the first interval, namely summer; when T0 is less than or equal to T2, the environmental temperature T0 is in the second interval, namely winter; when T2 < T0 < T1, the ambient temperature T0 is in the third interval, spring and autumn.
Step 500: and comparing the required air outlet temperature D with the four preset set values, and judging the required air outlet temperature interval where the required air outlet temperature D is located.
The four set values are the first set value DS1, the second set value DS2, the third set value DS3 and the fourth set value DS4, respectively, and the required outlet air temperature interval is divided into five intervals in sequence from the first set value DS1, the second set value DS2, the third set value DS3 and the fourth set value DS4 which are arranged from small to large. Correction values C1 and C2 are set, where the first correction value C1 is a correction value of the first set value DS1, and the second correction value C2 is a correction value when the ambient temperature T0 is compared with the required outlet air temperature D. The correction values are calibration values, which may be the same or different. Because the sensor has accuracy limitation, the acquired data may have certain errors, and the use of the correction value can reduce judgment errors caused by the acquisition errors and can also reduce system fluctuation.
Optionally, Step500 further includes determining an air outlet mode corresponding to the required air outlet temperature interval. The air outlet mode comprises a first mode, a second mode and a third mode, wherein the first mode sends out cold air, the second mode sends out hot air and the third mode sends out mixed air of cold air and hot air.
When the required air outlet temperature D is less than or equal to the third set value DS3, the air outlet mode of the air conditioner is a first mode, and cold air is sent out; when the required air outlet temperature D is greater than or equal to a fourth set value DS4, the air outlet mode of the air conditioner is a second mode, and hot air is sent out; when the required outlet air temperature D is greater than the third set value DS3 and less than the fourth set value DS4, the outlet air mode of the air conditioner is the third mode, and the mixed air of cold and hot air is sent out.
If the running state of the air conditioner is a single temperature zone, the ambient temperature T0 is in a second interval, the air outlet mode is a first mode, and the required air outlet temperature D meets the requirement that D is less than or equal to DS1+ C1; or
If the running state of the air conditioner is a single-temperature zone, the ambient temperature T0 is in a third interval, the air outlet mode is a first mode, and the required air outlet temperature D meets the requirement that DS1+ C1< D < DS 2; or
If the running state of the air conditioner is a double-temperature area, the environment temperature T0 is in a second interval, the air outlet mode is a first mode, and the required air outlet temperature D meets the condition that MIND is less than or equal to DS1+ C1; or
If the running state of the air conditioner is a double-temperature area, the environment temperature T0 is in a third interval, the air outlet mode is a first mode, and the required air outlet temperature D meets the requirements that DS1+ C1 is more than MIND and less than DS 2;
in any of the above four cases, Step501 is executed.
Step 501: and judging whether the ambient temperature T0 meets the condition that T0 is more than or equal to D + C2 or T0 is more than or equal to MIND + C2, if not, executing Step502, and if so, executing Step 600.
Step 502: judging whether the environmental temperature T0 meets T0-C2 or T0-MIND-C2, executing Step600, and controlling the on-off of the compressor and the existence of heating demand according to the judgment result.
Step 600: and judging the control mode of the circulating air door.
If the control mode is in the automatic mode, steps 701 to 716 are executed according to the operating state of the air conditioner, the ambient temperature interval where the ambient temperature T0 is located, the required outlet air temperature interval where the required outlet air temperature D is located, and the conditions of the outlet air mode.
If the control mode is a manual mode and the user manually opens the external circulation state, steps 801 to 816 are executed according to the operating state of the air conditioner, the ambient temperature interval where the ambient temperature T0 is located, the required air outlet temperature interval where the required air outlet temperature D is located, and the conditions of the air outlet mode.
If the control mode is the manual mode and the user manually starts the inner loop, steps 901 to 916 are executed according to the operating state of the air conditioner, the ambient temperature interval where the ambient temperature T0 is located, the required air outlet temperature interval where the required air outlet temperature D is located, and the conditions of the air outlet mode.
Condition 1: executing Step701, Step801 and Step901 in a single temperature zone mode, a first interval, a first mode and a DS3 with the D being less than or equal to D;
step 701: starting an internal circulation state, starting a compressor and having no heating requirement;
step 801: the compressor is started, and no heating requirement exists;
step 901: the compressor is started, and no heating requirement exists;
condition 2: single temperature zone mode, first interval, third mode, DS3 < D < DS4, execute Step702, Step802, Step 902;
step 702: starting an external circulation state, starting a compressor and having no heating requirement;
step 802: the compressor is started, and no heating requirement exists;
step 902: the compressor is started, and no heating requirement exists;
condition 3: executing Step703, Step803 and Step903 in a single temperature zone mode, a first interval and a second mode, wherein DS4 is less than or equal to D;
step 703: starting an external circulation state, closing a compressor and having no heating requirement;
step 803: the compressor is closed, and no heating requirement exists;
step 903: the compressor is closed, and no heating requirement exists;
condition 4: a single temperature zone mode, a second interval, a first mode, and D is not less than DS1+ C1, D + C2 is not less than T0, Step704, Step804 and Step904 are executed;
step 704: starting an external circulation state, starting a compressor and having no heating requirement;
step 804: the compressor is started, and no heating requirement exists;
step 904: the compressor is started, and no heating requirement exists;
condition 5: a single temperature zone mode, a second interval, a first mode, and D is not less than DS1+ C1, T0 is not less than D-C2, Step705, Step805, Step905 are executed;
step 705: starting an external circulation state, closing a compressor and having no heating requirement;
step 805: the compressor is closed, and no heating requirement exists;
step 905: the compressor is started, and no heating requirement exists;
condition 6: performing Step706, Step806 and Step906 in a single temperature zone mode, a second interval, a first mode/a second mode/a third mode and DS1+ C1< D;
step 706: starting an external circulation state, and closing a compressor, so that the heating requirement is met;
step 806: the compressor is closed, and the heating requirement is met;
step 906: the compressor is closed, and the heating requirement is met;
condition 7: a single temperature zone mode, a third interval, a first mode, and D is not less than DS1+ C1, or a single temperature zone mode, a third interval, a first mode, DS1+ C1< D is not less than DS2 and D + C2 is not less than T0, Step707, Step807, Step907 are executed;
step 707: starting an external circulation state, starting a compressor and having no heating requirement;
step 807: the compressor is started, and no heating requirement exists;
step 907: the compressor is started, and no heating requirement exists;
condition 8: a single temperature zone mode, a third zone, a first mode, DS1+ C1< D ≤ DS2 and T0 ≤ D-C2, or a single temperature zone mode, a third zone, a first mode, DS2 < D < DS3, Step708, Step808 and Step908 are executed;
step 708: starting an external circulation state, closing a compressor and having no heating requirement;
step 808: the compressor is closed, and no heating requirement exists;
step 908: the compressor is started, and no heating requirement exists;
condition 9: single temperature zone mode, third interval, second mode/third mode, DS3 < D, executing Step709, Step809 and Step 909;
step 709: starting an external circulation state, and closing a compressor, so that the heating requirement is met;
step 809: the compressor is closed, and the heating requirement is met;
step 909: the compressor is closed, and the heating requirement is met;
condition 10: executing Step710, Step810 and Step910 in a dual-temperature zone mode, a first interval, a first mode and a DS3 of MIND ≦ DS;
step 710: starting an internal circulation state, starting a compressor and having a heating requirement;
step 810: starting a compressor, and having a heating requirement;
step 910: starting a compressor, and having a heating requirement;
condition 11: a dual temperature zone mode, a first zone, a third mode, and DS3 < MIND < DS4, Step711, Step811, Step911 are executed;
step 711: starting an external circulation state, starting a compressor and having a heating requirement;
step 811: starting a compressor, and having a heating requirement;
step 911: starting a compressor, wherein the compressor has a heating requirement;
condition 12: executing Step712, Step812 and Step912 in the dual-temperature zone mode, the first interval, the second mode and the DS4 is less than or equal to MIND;
step 712: starting an external circulation state, and closing a compressor, so that the heating requirement is met;
step 812: the compressor is closed, and the heating requirement is met;
step 912: starting a compressor, wherein the compressor has a heating requirement;
condition 13: a dual temperature zone mode, a second zone, a first mode, and MIND ≦ DS1+ C1, MIND + C2 ≦ T0, executing Step713, Step813, Step 913;
step 713: starting an external circulation state, starting a compressor and having a heating requirement;
step 813: starting a compressor, and having a heating requirement;
step 913: starting a compressor, and having a heating requirement;
condition 14: a dual temperature zone mode, a second interval, a first mode, and an MIND is less than or equal to DS1+ C1, and a T0 is less than or equal to MIND-C2, or the dual temperature zone mode, the second interval, the first mode/the second mode/the third mode, DS1+ C1 is less than MIND, Step714, Step814 and Step914 are executed;
step 714: starting an external circulation state, and closing a compressor, so that the heating requirement is met;
step 814: the compressor is closed, and the heating requirement is met;
step 914: starting a compressor, and having a heating requirement;
condition 15: a dual temperature zone mode, a third interval, a first mode, and MIND ≦ DS1+ C1, or a dual temperature zone mode, a third interval, a first mode, DS1+ C1< MIND ≦ DS2, MIND + C2 ≦ T0, executing Step715, Step815, Step 915;
step 715: starting an external circulation state, starting a compressor and having a heating requirement;
step 815: starting a compressor, and having a heating requirement;
step 915: starting a compressor, and having a heating requirement;
condition 16: a dual temperature zone mode, a third zone, a first mode, DS1+ C1< MIND ≤ DS2, T0 ≤ MIND-C2; or in a dual temperature zone mode, a third interval, a first mode/a second mode/a third mode, and DS2 is less than MIND, Step716, Step816 and Step916 are executed;
step 716: starting an external circulation state, and closing a compressor, so that the heating requirement is met;
step 816: the compressor is closed, and the heating requirement is met;
step 916: starting a compressor, and having a heating requirement;
in the above conditions 1 to 16, after the compressor is started, the control device may determine the target evaporation temperature as the control target of the compressor according to the required outlet air temperature D, and further adjust the rotation speed of the compressor, thereby adjusting the refrigeration efficiency of the refrigeration system. After the heating system is started, the control device can determine the target temperature of the cooling liquid at the inlet of the warm air core body according to the required air outlet temperature D, and further determine the target working temperature of the warm air core body, so that the heating efficiency of the heating system is adjusted. The output of energy consumption equipment, namely a compressor and a heating part, is adjusted according to actual conditions, so that the requirement of comfort is met with lower energy consumption, and the aims of balancing comfort and saving energy are fulfilled.
Example 3
As shown in fig. 4, embodiment 3 of the present application provides a control system of a thermal management system, the thermal management system having a circulation damper 1, a refrigeration system 2, a heating system 3, and a control device 4, the control device 4 including: the acquisition module 41 is configured to acquire a required air outlet temperature D and an atmospheric ambient temperature T0; the judging module 42 is used for judging the operating state of the thermal management system, judging an environment temperature interval where the environment temperature T0 is located, judging an air outlet mode according to the required air outlet temperature D, judging a required air outlet temperature interval where the required air outlet temperature D is located, judging a control mode of the circulating air door 1, and judging whether the circulating air door 1 is in an outer circulation state or an inner circulation state; and the control module 43 is configured to enable the control device 4 to control the operating states of the refrigeration system 2, the heating system 3 and the circulation damper 1 according to the operating state of the thermal management system, the ambient temperature interval where the ambient temperature T0 is located, the required outlet air temperature interval where the required outlet air temperature D is located, and the control mode of the circulation damper 1.
This control system adjusts heat management system through controlling means and realizes according to ambient temperature and demand air-out temperature, realizes adjusting refrigerating system, heating system and circulating air door's operating condition, promotes the travelling comfort that heat management system brought and refrigerating system and heating system's regulation accuracy under the running state of difference, improves user's use and experiences.
The control method and system of the thermal management system disclosed in the embodiment of the application can obtain the environmental temperature, the required outlet air temperature (including the first required outlet air temperature and the second required outlet air temperature) and the automatic/manual control mode of the circulating air door, can judge the environmental temperature interval, the required outlet air temperature interval, the operating state (namely a single-temperature area or a double-temperature area), the outlet air mode, the state position of the circulating air door and the like, wherein the heating system can provide a heat source, the refrigerating system can provide a cold source, the external circulating state of the circulating air door can provide the heat source or the cold source according to the difference of the environmental temperature, and can ensure the accuracy of the automatic temperature control of the cold/heat source in the operating state of the single-temperature area mode or the double-temperature area mode and reasonably utilize the energy in the environment by respectively providing accurate control targets for the cold source and the heat source, thereby meeting the requirements of comfort and energy conservation.
Under the automatic control mode of the circulating air door, targeted target position output is adopted under different conditions, or the external circulation is started when the outdoor environment temperature is suitable for the energy of the available environment, even the external circulation can be used only as a special energy-saving mode, and the energy conservation is realized on the premise of ensuring the accuracy of the automatic temperature control of the cold/heat source under the operation state of a single-temperature area or a double-temperature area.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (9)

1. A control method of a thermal management system is characterized in that the thermal management system is provided with a circulating air door, a refrigerating system, a heating system and a control device, the control device can control the working states of the circulating air door, the refrigerating system and the heating system, the control method is executed by the control device, and the control method comprises the following steps:
acquiring a required air outlet temperature and an atmospheric environment temperature;
judging an environment temperature interval where the environment temperature is located according to the environment temperature, and judging a required air outlet temperature interval where the required air outlet temperature is located according to the required air outlet temperature;
controlling the working state of at least one of the refrigerating system, the heating system and the circulating air door according to the environment temperature interval where the environment temperature is located and the required air outlet temperature interval where the required air outlet temperature is located;
the operation state of the thermal management system comprises a single-temperature-zone mode and a double-temperature-zone mode;
if the range value of the environment temperature interval where the environment temperature is located is partially overlapped with the range value of the demand air-out temperature interval where the demand air-out temperature is located, the control method includes: according to the relation between the environment temperature and the required outlet air temperature, when the environment temperature is less than the difference value of the required outlet air temperature minus the correction value,
if the operation state is in the single temperature zone mode, the refrigerating system and the heating system can be closed, and the external circulation is started;
if the operation state is in a dual-temperature-zone mode, the heating system can be started to close the refrigerating system, and the external circulation is started.
2. The control method of the thermal management system according to claim 1, wherein controlling the working state of the refrigeration system comprises turning on the refrigeration system, turning off the refrigeration system, or adjusting the refrigeration efficiency after the refrigeration system is turned on; controlling the working state of the heating system, wherein the working state comprises starting the heating system, closing the heating system or adjusting the heating efficiency after the heating system is started; controlling the working state of the circulating air door to comprise an opening external circulation state or an opening internal circulation state;
the control method further includes:
the control mode of the working state of the circulating air door also comprises a manual mode, and when the control mode of the circulating air door is the manual mode, the control device controls the circulating air door to be in an outer circulation state or an inner circulation state according to the requirement of a user.
3. The method for controlling the thermal management system according to claim 1, wherein the determining the ambient temperature interval in which the ambient temperature is located according to the ambient temperature includes: judging the relation between the environment temperature and a first temperature and a second temperature, wherein the first temperature is higher than the second temperature;
if the ambient temperature is greater than or equal to the first temperature, the ambient temperature interval is a first interval;
if the ambient temperature is less than or equal to the second temperature, the ambient temperature interval is a second interval;
and if the environment temperature is less than the first temperature and greater than the second temperature, the environment temperature interval is a third interval.
4. The method according to claim 3, wherein the determining a required outlet air temperature interval in which the required outlet air temperature is located according to the required outlet air temperature includes: judging the relation between the required air outlet temperature and a first set value, a second set value, a third set value and a fourth set value, wherein the first set value is smaller than the second set value, the second set value is smaller than the third set value, and the third set value is smaller than the fourth set value; if the required air outlet temperature is less than a first set value, the required air outlet temperature is in a first required air outlet temperature interval, and if the required air outlet temperature is greater than the first set value and less than or equal to a second set value, the required air outlet temperature interval is a second required air outlet temperature interval; if the required air outlet temperature is greater than the second set value and less than or equal to a third set value, the required air outlet temperature interval is a third required air outlet temperature interval; if the required air-out temperature is larger than the third set value and smaller than the fourth set value, the required air-out temperature interval is a fourth required air-out temperature interval; if the required air outlet temperature is greater than or equal to the fourth set value, the required air outlet temperature interval is a fifth required air outlet temperature interval;
when the required air outlet temperature is less than or equal to a third set value, cold air is sent out, when the required air outlet temperature is greater than or equal to a fourth set value, hot air is sent out, and when the required air outlet temperature is greater than the third set value and less than the fourth set value, cold and hot mixed air is sent out.
5. The control method of the thermal management system according to claim 4, characterized in that the control method comprises: and when the environment temperature is less than or equal to the second temperature and the required outlet air temperature is greater than or equal to a fourth set value, the heating system is started and the circulating air door is in an external circulation state.
6. The control method of the thermal management system according to claim 4, characterized in that the control method comprises: when the environment temperature is higher than or equal to the first temperature, the required outlet air temperature is lower than or equal to a third set value, and the circulating air door is in an inner circulating state.
7. The method of claim 1, wherein the desired outlet air temperature comprises a first desired outlet air temperature and a second desired outlet air temperature, and wherein the desired outlet air temperature is equal to the first desired outlet air temperature or the second desired outlet air temperature;
when the first required outlet air temperature is equal to the second required outlet air temperature, the operation state of the thermal management system is in a single-temperature-zone mode;
when the first required outlet air temperature is not equal to the second required outlet air temperature, the operating state of the thermal management system is in a dual-temperature-zone mode;
in the dual-temperature zone mode, the heat management system starts at least two of the external circulation states of the heating system, the refrigerating system and the circulating air door.
8. The control method of the thermal management system according to claim 2, wherein the refrigeration system comprises a compressor, and when the refrigeration system is turned on, the refrigeration system adjusts the rotation speed of the compressor according to the required outlet air temperature;
the heating system comprises a warm air core body, and when the heating system is started, the heating system adjusts the target working temperature of the warm air core body according to the required air outlet temperature.
9. A control system for a thermal management system having a circulation damper, a refrigeration system, a heating system, and a control device, the control device comprising:
the acquisition module is used for acquiring the required air outlet temperature and the ambient temperature of the atmosphere;
the judging module is used for judging an environment temperature interval where the environment temperature is located and judging a required air outlet temperature interval where the required air outlet temperature is located;
the control module is used for enabling the control device to control the working state of at least one of the refrigerating system, the heating system and the circulating air door according to the environment temperature interval where the environment temperature is located and the required air outlet temperature interval where the required air outlet temperature is located;
the operation state of the thermal management system comprises a single-temperature-zone mode and a double-temperature-zone mode;
the control module is used for closing the refrigerating system and the heating system and starting external circulation when the ambient temperature is smaller than a difference value obtained by subtracting a correction value from the required air outlet temperature according to the relation between the ambient temperature and the required air outlet temperature if the range value of the ambient temperature range where the ambient temperature is located is partially overlapped with the range value of the required air outlet temperature range where the required air outlet temperature is located; if the operation state is in the dual-temperature-zone mode, the heating system can be started to close the refrigerating system, and the external circulation is started.
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